sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 1 | |
| 2 | /*--------------------------------------------------------------------*/ |
| 3 | /*--- ---*/ |
sewardj | c0ee2ed | 2004-07-27 10:29:41 +0000 | [diff] [blame] | 4 | /*--- This file (guest-x86/toIR.c) is ---*/ |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 5 | /*--- Copyright (c) 2004 OpenWorks LLP. All rights reserved. ---*/ |
| 6 | /*--- ---*/ |
| 7 | /*--------------------------------------------------------------------*/ |
| 8 | |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 9 | /* TODO: |
sewardj | 1f40a0a | 2004-07-21 12:28:07 +0000 | [diff] [blame] | 10 | SBB reg with itself |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 11 | is Iop_Neg* used? |
sewardj | 1f40a0a | 2004-07-21 12:28:07 +0000 | [diff] [blame] | 12 | xadd %reg,%reg fix |
| 13 | MOVAPS fix (vg_to_ucode rev 1.143) |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 14 | */ |
| 15 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 16 | /* Translates x86 code to IR. */ |
| 17 | |
| 18 | #include "libvex_basictypes.h" |
| 19 | #include "libvex_ir.h" |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 20 | #include "libvex.h" |
sewardj | c0ee2ed | 2004-07-27 10:29:41 +0000 | [diff] [blame] | 21 | |
| 22 | #include "main/vex_util.h" |
| 23 | #include "main/vex_globals.h" |
| 24 | #include "guest-x86/gdefs.h" |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 25 | |
| 26 | |
| 27 | /*------------------------------------------------------------*/ |
| 28 | /*--- Globals ---*/ |
| 29 | /*------------------------------------------------------------*/ |
| 30 | |
| 31 | /* These are set at the start of the translation of a BB, so |
| 32 | that we don't have to pass them around endlessly. */ |
| 33 | |
| 34 | /* We need to know this to do sub-register accesses correctly. */ |
| 35 | /* CONST */ |
| 36 | static Bool host_is_bigendian; |
| 37 | |
| 38 | /* Are we being verbose? */ |
| 39 | /* CONST */ |
| 40 | static Bool print_codegen; |
| 41 | |
| 42 | /* Pointer to the guest code area. */ |
| 43 | /* CONST */ |
| 44 | static UChar* guest_code; |
| 45 | |
| 46 | /* The guest address corresponding to guest_code[0]. */ |
| 47 | /* CONST */ |
| 48 | static Addr32 guest_eip; |
| 49 | |
sewardj | d7cb853 | 2004-08-17 23:59:23 +0000 | [diff] [blame] | 50 | /* The IRBB* into which we're generating code. */ |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 51 | static IRBB* irbb; |
| 52 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 53 | |
| 54 | /* Add a statement to the list held by "irbb". */ |
sewardj | d7cb853 | 2004-08-17 23:59:23 +0000 | [diff] [blame] | 55 | static void stmt ( IRStmt* st ) |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 56 | { |
sewardj | d7cb853 | 2004-08-17 23:59:23 +0000 | [diff] [blame] | 57 | addStmtToIRBB( irbb, st ); |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 58 | } |
| 59 | |
| 60 | /* Generate a new temporary of the given type. */ |
| 61 | static IRTemp newTemp ( IRType ty ) |
| 62 | { |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 63 | vassert(isPlausibleType(ty)); |
sewardj | e539a40 | 2004-07-14 18:24:17 +0000 | [diff] [blame] | 64 | return newIRTemp( irbb->tyenv, ty ); |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 65 | } |
| 66 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 67 | /* Bomb out if we can't handle something. */ |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 68 | __attribute__ ((noreturn)) |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 69 | static void unimplemented ( Char* str ) |
| 70 | { |
| 71 | vex_printf("x86toIR: unimplemented feature\n"); |
| 72 | vpanic(str); |
| 73 | } |
| 74 | |
| 75 | |
| 76 | /*------------------------------------------------------------*/ |
| 77 | /*--- Debugging output ---*/ |
| 78 | /*------------------------------------------------------------*/ |
| 79 | |
| 80 | #define DIP(format, args...) \ |
| 81 | if (print_codegen) \ |
| 82 | vex_printf(format, ## args) |
| 83 | |
| 84 | #define DIS(buf, format, args...) \ |
| 85 | if (print_codegen) \ |
| 86 | vex_sprintf(buf, format, ## args) |
| 87 | |
| 88 | |
| 89 | /*------------------------------------------------------------*/ |
| 90 | /*--- Helper bits and pieces for deconstructing the ---*/ |
| 91 | /*--- x86 insn stream. ---*/ |
| 92 | /*------------------------------------------------------------*/ |
| 93 | |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 94 | /* This is the Intel register encoding -- integer regs. */ |
| 95 | #define R_EAX 0 |
| 96 | #define R_ECX 1 |
| 97 | #define R_EDX 2 |
| 98 | #define R_EBX 3 |
| 99 | #define R_ESP 4 |
| 100 | #define R_EBP 5 |
| 101 | #define R_ESI 6 |
| 102 | #define R_EDI 7 |
| 103 | |
| 104 | |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 105 | static UInt extend_s_8to32( UInt x ) |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 106 | { |
| 107 | return (UInt)((((Int)x) << 24) >> 24); |
| 108 | } |
| 109 | |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 110 | static UInt extend_s_16to32 ( UInt x ) |
| 111 | { |
| 112 | return (UInt)((((Int)x) << 16) >> 16); |
| 113 | } |
| 114 | |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 115 | /* Fetch a byte from the guest insn stream. */ |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 116 | static UChar getIByte ( UInt delta ) |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 117 | { |
| 118 | return guest_code[delta]; |
| 119 | } |
| 120 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 121 | /* Extract the reg field from a modRM byte. */ |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 122 | static Int gregOfRM ( UChar mod_reg_rm ) |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 123 | { |
| 124 | return (Int)( (mod_reg_rm >> 3) & 7 ); |
| 125 | } |
| 126 | |
| 127 | /* Figure out whether the mod and rm parts of a modRM byte refer to a |
| 128 | register or memory. If so, the byte will have the form 11XXXYYY, |
| 129 | where YYY is the register number. */ |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 130 | static Bool epartIsReg ( UChar mod_reg_rm ) |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 131 | { |
| 132 | return (0xC0 == (mod_reg_rm & 0xC0)); |
| 133 | } |
| 134 | |
| 135 | /* ... and extract the register number ... */ |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 136 | static Int eregOfRM ( UChar mod_reg_rm ) |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 137 | { |
| 138 | return (Int)(mod_reg_rm & 0x7); |
| 139 | } |
| 140 | |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 141 | /* Get a 8/16/32-bit unsigned value out of the insn stream. */ |
| 142 | |
| 143 | static UInt getUChar ( UInt delta ) |
| 144 | { |
| 145 | UInt v = guest_code[delta+0]; |
| 146 | return v & 0xFF; |
| 147 | } |
| 148 | |
| 149 | static UInt getUDisp16 ( UInt delta ) |
| 150 | { |
| 151 | UInt v = guest_code[delta+1]; v <<= 8; |
| 152 | v |= guest_code[delta+0]; |
| 153 | return v & 0xFFFF; |
| 154 | } |
| 155 | |
| 156 | static UInt getUDisp32 ( UInt delta ) |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 157 | { |
| 158 | UInt v = guest_code[delta+3]; v <<= 8; |
| 159 | v |= guest_code[delta+2]; v <<= 8; |
| 160 | v |= guest_code[delta+1]; v <<= 8; |
| 161 | v |= guest_code[delta+0]; |
| 162 | return v; |
| 163 | } |
| 164 | |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 165 | static UInt getUDisp ( Int size, UInt delta ) |
| 166 | { |
| 167 | switch (size) { |
| 168 | case 4: return getUDisp32(delta); |
| 169 | case 2: return getUDisp16(delta); |
| 170 | case 1: return getUChar(delta); |
| 171 | default: vpanic("getUDisp(x86)"); |
| 172 | } |
| 173 | return 0; /*notreached*/ |
| 174 | } |
| 175 | |
| 176 | |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 177 | /* Get a byte value out of the insn stream and sign-extend to 32 |
| 178 | bits. */ |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 179 | static UInt getSDisp8 ( UInt delta ) |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 180 | { |
| 181 | return extend_s_8to32( (UInt) (guest_code[delta]) ); |
| 182 | } |
| 183 | |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 184 | static UInt getSDisp16 ( UInt delta0 ) |
| 185 | { |
| 186 | UChar* eip = (UChar*)(&guest_code[delta0]); |
| 187 | UInt d = *eip++; |
| 188 | d |= ((*eip++) << 8); |
| 189 | return extend_s_16to32(d); |
| 190 | } |
| 191 | |
| 192 | static UInt getSDisp ( Int size, UInt delta ) |
| 193 | { |
| 194 | switch (size) { |
| 195 | case 4: return getUDisp32(delta); |
| 196 | case 2: return getSDisp16(delta); |
| 197 | case 1: return getSDisp8(delta); |
| 198 | default: vpanic("getSDisp(x86)"); |
| 199 | } |
| 200 | return 0; /*notreached*/ |
| 201 | } |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 202 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 203 | |
| 204 | /*------------------------------------------------------------*/ |
| 205 | /*--- Helpers for constructing IR. ---*/ |
| 206 | /*------------------------------------------------------------*/ |
| 207 | |
| 208 | /* Create a 1/2/4 byte read of an x86 integer registers. For 16/8 bit |
| 209 | register references, we need to take the host endianness into |
| 210 | account. Supplied value is 0 .. 7 and in the Intel instruction |
| 211 | encoding. */ |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 212 | |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 213 | static IRType szToITy ( Int n ) |
| 214 | { |
| 215 | switch (n) { |
| 216 | case 1: return Ity_I8; |
| 217 | case 2: return Ity_I16; |
| 218 | case 4: return Ity_I32; |
| 219 | default: vpanic("szToITy(x86)"); |
| 220 | } |
| 221 | } |
| 222 | |
| 223 | static Int integerGuestRegOffset ( Int sz, UInt archreg ) |
| 224 | { |
| 225 | vassert(archreg < 8); |
| 226 | |
| 227 | vassert(!host_is_bigendian); |
| 228 | |
| 229 | /* Correct for little-endian host only. */ |
| 230 | switch (sz) { |
| 231 | case 2: |
| 232 | case 4: return OFFB_EAX + 4*archreg; |
| 233 | case 1: if (archreg < 4) |
| 234 | return OFFB_EAX + 4*archreg + 0; |
| 235 | else |
| 236 | return OFFB_EAX + 4*(archreg-4) + 1; |
| 237 | default: vpanic("integerGuestRegOffset(x86,le)"); |
| 238 | } |
| 239 | } |
| 240 | |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 241 | static IRExpr* getIReg ( Int sz, UInt archreg ) |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 242 | { |
| 243 | vassert(sz == 1 || sz == 2 || sz == 4); |
| 244 | vassert(archreg < 8); |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 245 | return IRExpr_Get( integerGuestRegOffset(sz,archreg), |
| 246 | szToITy(sz) ); |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 247 | } |
| 248 | |
| 249 | /* Ditto, but write to a reg instead. */ |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 250 | static void putIReg ( Int sz, UInt archreg, IRExpr* e ) |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 251 | { |
| 252 | vassert(sz == 1 || sz == 2 || sz == 4); |
| 253 | vassert(archreg < 8); |
sewardj | eeb9ef8 | 2004-07-15 12:39:03 +0000 | [diff] [blame] | 254 | stmt( IRStmt_Put(integerGuestRegOffset(sz,archreg), e) ); |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 255 | } |
| 256 | |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 257 | static void assign ( IRTemp dst, IRExpr* e ) |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 258 | { |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 259 | stmt( IRStmt_Tmp(dst, e) ); |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 260 | } |
| 261 | |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 262 | static void storeLE ( IRExpr* addr, IRExpr* data ) |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 263 | { |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 264 | stmt( IRStmt_STle(addr,data) ); |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 265 | } |
| 266 | |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 267 | static IRExpr* unop ( IROp op, IRExpr* a ) |
| 268 | { |
| 269 | return IRExpr_Unop(op, a); |
| 270 | } |
| 271 | |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 272 | static IRExpr* binop ( IROp op, IRExpr* a1, IRExpr* a2 ) |
| 273 | { |
| 274 | return IRExpr_Binop(op, a1, a2); |
| 275 | } |
| 276 | |
| 277 | static IRExpr* mkexpr ( IRTemp tmp ) |
| 278 | { |
| 279 | return IRExpr_Tmp(tmp); |
| 280 | } |
| 281 | |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 282 | static IRExpr* mkU8 ( UInt i ) |
| 283 | { |
| 284 | vassert(i < 256); |
| 285 | return IRExpr_Const(IRConst_U8(i)); |
| 286 | } |
| 287 | |
| 288 | static IRExpr* mkU16 ( UInt i ) |
| 289 | { |
| 290 | vassert(i < 65536); |
| 291 | return IRExpr_Const(IRConst_U16(i)); |
| 292 | } |
| 293 | |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 294 | static IRExpr* mkU32 ( UInt i ) |
| 295 | { |
| 296 | return IRExpr_Const(IRConst_U32(i)); |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 297 | } |
| 298 | |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 299 | static IRExpr* mkU ( IRType ty, UInt i ) |
| 300 | { |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 301 | if (ty == Ity_I8) return mkU8(i); |
| 302 | if (ty == Ity_I16) return mkU16(i); |
| 303 | if (ty == Ity_I32) return mkU32(i); |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 304 | /* If this panics, it usually means you passed a size (1,2,4) |
| 305 | value as the IRType, rather than a real IRType. */ |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 306 | vpanic("mkU(x86)"); |
| 307 | } |
| 308 | |
| 309 | static IRExpr* loadLE ( IRType ty, IRExpr* data ) |
| 310 | { |
| 311 | return IRExpr_LDle(ty,data); |
| 312 | } |
| 313 | |
| 314 | static IROp mkSizedOp ( IRType ty, IROp op8 ) |
| 315 | { |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 316 | Int adj; |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 317 | vassert(ty == Ity_I8 || ty == Ity_I16 || ty == Ity_I32); |
| 318 | vassert(op8 == Iop_Add8 || op8 == Iop_Sub8 |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 319 | || op8 == Iop_Mul8 |
| 320 | || op8 == Iop_Or8 || op8 == Iop_And8 || op8 == Iop_Xor8 |
sewardj | c22a6fd | 2004-07-29 23:41:47 +0000 | [diff] [blame] | 321 | || op8 == Iop_Shl8 || op8 == Iop_Shr8 || op8 == Iop_Sar8 |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 322 | || op8 == Iop_CmpEQ8 || op8 == Iop_CmpNE8 |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 323 | || op8 == Iop_Not8 || op8 == Iop_Neg8 ); |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 324 | adj = ty==Ity_I8 ? 0 : (ty==Ity_I16 ? 1 : 2); |
| 325 | return adj + op8; |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 326 | } |
| 327 | |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 328 | static IROp mkWidenOp ( Int szSmall, Int szBig, Bool signd ) |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 329 | { |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 330 | if (szSmall == 1 && szBig == 4) { |
| 331 | return signd ? Iop_8Sto32 : Iop_8Uto32; |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 332 | } |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 333 | if (szSmall == 1 && szBig == 2) { |
| 334 | return signd ? Iop_8Sto16 : Iop_8Uto16; |
| 335 | } |
| 336 | if (szSmall == 2 && szBig == 4) { |
| 337 | return signd ? Iop_16Sto32 : Iop_16Uto32; |
| 338 | } |
| 339 | vpanic("mkWidenOp(x86)"); |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 340 | } |
| 341 | |
| 342 | |
| 343 | /*------------------------------------------------------------*/ |
| 344 | /*--- Helpers for %eflags. ---*/ |
| 345 | /*------------------------------------------------------------*/ |
| 346 | |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 347 | /* -------------- Evaluating the flags-thunk. -------------- */ |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 348 | |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 349 | /* Build IR to calculate all the eflags from stored |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 350 | CC_OP/CC_SRC/CC_DST. Returns an expression :: Ity_I32. */ |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 351 | static IRExpr* mk_calculate_eflags_all ( void ) |
| 352 | { |
| 353 | IRExpr** args = LibVEX_Alloc(4 * sizeof(IRExpr*)); |
| 354 | args[0] = IRExpr_Get(OFFB_CC_OP, Ity_I32); |
| 355 | args[1] = IRExpr_Get(OFFB_CC_SRC, Ity_I32); |
| 356 | args[2] = IRExpr_Get(OFFB_CC_DST, Ity_I32); |
| 357 | args[3] = NULL; |
| 358 | return IRExpr_CCall("calculate_eflags_all", Ity_I32, args); |
| 359 | } |
| 360 | |
sewardj | 84ff065 | 2004-08-23 16:16:08 +0000 | [diff] [blame] | 361 | /* Build IR to calculate just the carry flag from stored |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 362 | CC_OP/CC_SRC/CC_DST. Returns an expression :: Ity_I32. */ |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 363 | static IRExpr* mk_calculate_eflags_c ( void ) |
| 364 | { |
| 365 | IRExpr** args = LibVEX_Alloc(4 * sizeof(IRExpr*)); |
| 366 | args[0] = IRExpr_Get(OFFB_CC_OP, Ity_I32); |
| 367 | args[1] = IRExpr_Get(OFFB_CC_SRC, Ity_I32); |
| 368 | args[2] = IRExpr_Get(OFFB_CC_DST, Ity_I32); |
| 369 | args[3] = NULL; |
| 370 | return IRExpr_CCall("calculate_eflags_c", Ity_I32, args); |
| 371 | } |
| 372 | |
sewardj | 84ff065 | 2004-08-23 16:16:08 +0000 | [diff] [blame] | 373 | /* Build IR to calculate some particular condition from stored |
| 374 | CC_OP/CC_SRC/CC_DST. Returns an expression :: Ity_Bit. */ |
| 375 | static IRExpr* calculate_condition ( Condcode cond ) |
| 376 | { |
| 377 | IRExpr** args = LibVEX_Alloc(5 * sizeof(IRExpr*)); |
| 378 | args[0] = mkU32(cond); |
| 379 | args[1] = IRExpr_Get(OFFB_CC_OP, Ity_I32); |
| 380 | args[2] = IRExpr_Get(OFFB_CC_SRC, Ity_I32); |
| 381 | args[3] = IRExpr_Get(OFFB_CC_DST, Ity_I32); |
| 382 | args[4] = NULL; |
| 383 | return unop(Iop_32to1, |
| 384 | IRExpr_CCall("calculate_condition", Ity_I32, args)); |
| 385 | } |
| 386 | |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 387 | |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 388 | /* -------------- Building the flags-thunk. -------------- */ |
| 389 | |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 390 | /* The machinery in this section builds the flag-thunk following a |
| 391 | flag-setting operation. Hence the various setFlags_* functions. |
| 392 | Note, in reality setFlags_ADD_SUB and setFlags_MUL are pretty much |
| 393 | the same -- they just store the two operands. |
| 394 | */ |
| 395 | |
| 396 | static Bool isAddSub ( IROp op8 ) |
| 397 | { |
| 398 | return op8 == Iop_Add8 || op8 == Iop_Sub8; |
| 399 | } |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 400 | |
sewardj | a238471 | 2004-07-29 14:36:40 +0000 | [diff] [blame] | 401 | /* U-widen 8/16/32 bit int expr to 32. */ |
sewardj | c22a6fd | 2004-07-29 23:41:47 +0000 | [diff] [blame] | 402 | static IRExpr* widenUto32 ( IRExpr* e ) |
sewardj | 443cd9d | 2004-07-18 23:06:45 +0000 | [diff] [blame] | 403 | { |
| 404 | switch (typeOfIRExpr(irbb->tyenv,e)) { |
| 405 | case Ity_I32: return e; |
| 406 | case Ity_I16: return unop(Iop_16Uto32,e); |
| 407 | case Ity_I8: return unop(Iop_8Uto32,e); |
| 408 | default: vpanic("widenUto32"); |
| 409 | } |
| 410 | } |
| 411 | |
sewardj | c22a6fd | 2004-07-29 23:41:47 +0000 | [diff] [blame] | 412 | /* S-widen 8/16/32 bit int expr to 32. */ |
| 413 | static IRExpr* widenSto32 ( IRExpr* e ) |
| 414 | { |
| 415 | switch (typeOfIRExpr(irbb->tyenv,e)) { |
| 416 | case Ity_I32: return e; |
| 417 | case Ity_I16: return unop(Iop_16Sto32,e); |
| 418 | case Ity_I8: return unop(Iop_8Sto32,e); |
| 419 | default: vpanic("widenSto32"); |
| 420 | } |
| 421 | } |
| 422 | |
sewardj | a238471 | 2004-07-29 14:36:40 +0000 | [diff] [blame] | 423 | /* Narrow 8/16/32 bit int expr to 8/16/32. Clearly only some |
| 424 | of these combinations make sense. */ |
| 425 | static IRExpr* narrowTo ( IRType dst_ty, IRExpr* e ) |
| 426 | { |
| 427 | IRType src_ty = typeOfIRExpr(irbb->tyenv,e); |
| 428 | if (src_ty == dst_ty) |
| 429 | return e; |
| 430 | if (src_ty == Ity_I32 && dst_ty == Ity_I16) |
| 431 | return unop(Iop_32to16, e); |
| 432 | if (src_ty == Ity_I32 && dst_ty == Ity_I8) |
| 433 | return unop(Iop_32to8, e); |
| 434 | |
| 435 | vex_printf("\nsrc, dst tys are: "); |
| 436 | ppIRType(src_ty); |
| 437 | vex_printf(", "); |
| 438 | ppIRType(dst_ty); |
| 439 | vex_printf("\n"); |
| 440 | vpanic("narrowTo(x86)"); |
| 441 | } |
| 442 | |
sewardj | 443cd9d | 2004-07-18 23:06:45 +0000 | [diff] [blame] | 443 | |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 444 | /* This is for add/sub/adc/sbb, where (like multiply) we simply store |
| 445 | the two arguments. Note, the args are reversed, so if op8 |
| 446 | indicates subtract, then the value the program is trying to compute |
| 447 | is src1 - src2. */ |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 448 | |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 449 | static void setFlags_ADD_SUB ( IROp op8, |
| 450 | IRTemp src2, |
| 451 | IRTemp src1, |
| 452 | IRType ty ) |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 453 | { |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 454 | Int ccOp = ty==Ity_I8 ? 0 : (ty==Ity_I16 ? 1 : 2); |
| 455 | |
| 456 | vassert(ty == Ity_I8 || ty == Ity_I16 || ty == Ity_I32); |
| 457 | |
| 458 | switch (op8) { |
| 459 | case Iop_Add8: ccOp += CC_OP_ADDB; break; |
| 460 | case Iop_Sub8: ccOp += CC_OP_SUBB; break; |
| 461 | default: ppIROp(op8); |
| 462 | vpanic("setFlags_ADD_SUB(x86)"); |
| 463 | } |
| 464 | stmt( IRStmt_Put( OFFB_CC_OP, mkU32(ccOp)) ); |
| 465 | stmt( IRStmt_Put( OFFB_CC_SRC, widenUto32(mkexpr(src2))) ); |
| 466 | stmt( IRStmt_Put( OFFB_CC_DST, widenUto32(mkexpr(src1))) ); |
| 467 | } |
| 468 | |
| 469 | |
| 470 | /* For and/or/xor, only the result is important. However, put zero in |
| 471 | CC_SRC to keep memcheck happy. */ |
| 472 | |
| 473 | static void setFlags_LOGIC ( IROp op8, |
| 474 | IRTemp dst1, |
| 475 | IRType ty ) |
| 476 | { |
| 477 | Int ccOp = ty==Ity_I8 ? 0 : (ty==Ity_I16 ? 1 : 2); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 478 | |
| 479 | vassert(ty == Ity_I8 || ty == Ity_I16 || ty == Ity_I32); |
| 480 | |
| 481 | switch (op8) { |
| 482 | case Iop_Or8: |
| 483 | case Iop_And8: |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 484 | case Iop_Xor8: ccOp += CC_OP_LOGICB; break; |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 485 | default: ppIROp(op8); |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 486 | vpanic("setFlags_LOGIC(x86)"); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 487 | } |
sewardj | eeb9ef8 | 2004-07-15 12:39:03 +0000 | [diff] [blame] | 488 | stmt( IRStmt_Put( OFFB_CC_OP, mkU32(ccOp)) ); |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 489 | stmt( IRStmt_Put( OFFB_CC_SRC, mkU32(0)) ); |
sewardj | c22a6fd | 2004-07-29 23:41:47 +0000 | [diff] [blame] | 490 | stmt( IRStmt_Put( OFFB_CC_DST, widenUto32(mkexpr(dst1))) ); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 491 | } |
| 492 | |
| 493 | |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 494 | /* For all shift and rotate cases, store the result value and the |
| 495 | result except shifted or rotated one bit less ("undershifted", |
| 496 | hence US). And then only when the guard is non-zero. */ |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 497 | |
sewardj | c22a6fd | 2004-07-29 23:41:47 +0000 | [diff] [blame] | 498 | static void setFlags_DSTus_DST1 ( IROp op32, |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 499 | IRTemp dstUS, |
| 500 | IRTemp dst1, |
| 501 | IRType ty, |
sewardj | a06e556 | 2004-07-14 13:18:05 +0000 | [diff] [blame] | 502 | IRTemp guard ) |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 503 | { |
sewardj | c22a6fd | 2004-07-29 23:41:47 +0000 | [diff] [blame] | 504 | Int ccOp = ty==Ity_I8 ? 2 : (ty==Ity_I16 ? 1 : 0); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 505 | |
| 506 | vassert(ty == Ity_I8 || ty == Ity_I16 || ty == Ity_I32); |
| 507 | vassert(guard); |
| 508 | |
sewardj | c22a6fd | 2004-07-29 23:41:47 +0000 | [diff] [blame] | 509 | switch (op32) { |
| 510 | case Iop_Shr32: |
| 511 | case Iop_Sar32: ccOp = CC_OP_SARL - ccOp; break; |
| 512 | case Iop_Shl32: ccOp = CC_OP_SHLL - ccOp; break; |
| 513 | default: ppIROp(op32); |
| 514 | vpanic("setFlags_DSTus_DST1(x86)"); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 515 | } |
| 516 | |
| 517 | /* CC_SRC = undershifted %d after, CC_DST = %d afterwards */ |
sewardj | eeb9ef8 | 2004-07-15 12:39:03 +0000 | [diff] [blame] | 518 | stmt( IRStmt_Put( OFFB_CC_OP, |
sewardj | 4042c7e | 2004-07-18 01:28:30 +0000 | [diff] [blame] | 519 | IRExpr_Mux0X( mkexpr(guard), |
| 520 | IRExpr_Get(OFFB_CC_OP,Ity_I32), |
| 521 | mkU32(ccOp))) ); |
sewardj | eeb9ef8 | 2004-07-15 12:39:03 +0000 | [diff] [blame] | 522 | stmt( IRStmt_Put( OFFB_CC_SRC, |
sewardj | 4042c7e | 2004-07-18 01:28:30 +0000 | [diff] [blame] | 523 | IRExpr_Mux0X( mkexpr(guard), |
| 524 | IRExpr_Get(OFFB_CC_SRC,Ity_I32), |
sewardj | c22a6fd | 2004-07-29 23:41:47 +0000 | [diff] [blame] | 525 | widenUto32(mkexpr(dstUS)))) ); |
sewardj | eeb9ef8 | 2004-07-15 12:39:03 +0000 | [diff] [blame] | 526 | stmt( IRStmt_Put( OFFB_CC_DST, |
sewardj | 4042c7e | 2004-07-18 01:28:30 +0000 | [diff] [blame] | 527 | IRExpr_Mux0X( mkexpr(guard), |
| 528 | IRExpr_Get(OFFB_CC_DST,Ity_I32), |
sewardj | c22a6fd | 2004-07-29 23:41:47 +0000 | [diff] [blame] | 529 | widenUto32(mkexpr(dst1)))) ); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 530 | } |
| 531 | |
| 532 | |
| 533 | /* For the inc/dec case, we store the result value and the former |
| 534 | value of the carry flag, which unfortunately we have to compute. */ |
| 535 | |
| 536 | static void setFlags_INC_DEC ( Bool inc, IRTemp dst, IRType ty ) |
| 537 | { |
sewardj | eeb9ef8 | 2004-07-15 12:39:03 +0000 | [diff] [blame] | 538 | Int ccOp = inc ? CC_OP_INCB : CC_OP_DECB; |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 539 | |
| 540 | ccOp += ty==Ity_I8 ? 0 : (ty==Ity_I16 ? 1 : 2); |
| 541 | vassert(ty == Ity_I8 || ty == Ity_I16 || ty == Ity_I32); |
| 542 | |
| 543 | /* This has to come first, because calculating the C flag |
| 544 | may require reading all three OFFB_CC fields. */ |
sewardj | eeb9ef8 | 2004-07-15 12:39:03 +0000 | [diff] [blame] | 545 | stmt( IRStmt_Put( OFFB_CC_SRC, mk_calculate_eflags_c()) ); |
| 546 | stmt( IRStmt_Put( OFFB_CC_OP, mkU32(ccOp)) ); |
| 547 | stmt( IRStmt_Put( OFFB_CC_DST, mkexpr(dst)) ); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 548 | } |
| 549 | |
| 550 | |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 551 | /* For multiplies, just remember the two operands and a |
| 552 | description of what kind of multiply. */ |
| 553 | |
| 554 | static |
| 555 | void setFlags_MUL ( IRType ty, IRTemp src1, IRTemp src2, UInt base_op ) |
| 556 | { |
| 557 | switch (ty) { |
| 558 | case Ity_I8: |
sewardj | eeb9ef8 | 2004-07-15 12:39:03 +0000 | [diff] [blame] | 559 | stmt( IRStmt_Put( OFFB_CC_OP, mkU32(base_op+0) ) ); |
| 560 | stmt( IRStmt_Put( OFFB_CC_SRC, unop(Iop_8Uto32,mkexpr(src1)) ) ); |
| 561 | stmt( IRStmt_Put( OFFB_CC_DST, unop(Iop_8Uto32,mkexpr(src2)) ) ); |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 562 | break; |
| 563 | case Ity_I16: |
sewardj | eeb9ef8 | 2004-07-15 12:39:03 +0000 | [diff] [blame] | 564 | stmt( IRStmt_Put( OFFB_CC_OP, mkU32(base_op+1) ) ); |
| 565 | stmt( IRStmt_Put( OFFB_CC_SRC, unop(Iop_16Uto32,mkexpr(src1)) ) ); |
| 566 | stmt( IRStmt_Put( OFFB_CC_DST, unop(Iop_16Uto32,mkexpr(src2)) ) ); |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 567 | break; |
| 568 | case Ity_I32: |
sewardj | eeb9ef8 | 2004-07-15 12:39:03 +0000 | [diff] [blame] | 569 | stmt( IRStmt_Put( OFFB_CC_OP, mkU32(base_op+2) ) ); |
| 570 | stmt( IRStmt_Put( OFFB_CC_SRC, mkexpr(src1) ) ); |
| 571 | stmt( IRStmt_Put( OFFB_CC_DST, mkexpr(src2) ) ); |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 572 | break; |
| 573 | default: |
| 574 | vpanic("setFlags_MUL(x86)"); |
| 575 | } |
| 576 | } |
| 577 | |
| 578 | |
sewardj | 3af115f | 2004-07-14 02:46:52 +0000 | [diff] [blame] | 579 | /* -------------- Condition codes. -------------- */ |
| 580 | |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 581 | /* Condition codes, using the Intel encoding. */ |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 582 | |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 583 | static Char* name_Condcode ( Condcode cond ) |
| 584 | { |
| 585 | switch (cond) { |
| 586 | case CondO: return "o"; |
| 587 | case CondNO: return "no"; |
| 588 | case CondB: return "b"; |
| 589 | case CondNB: return "nb"; |
| 590 | case CondZ: return "z"; |
| 591 | case CondNZ: return "nz"; |
| 592 | case CondBE: return "be"; |
| 593 | case CondNBE: return "nbe"; |
| 594 | case CondS: return "s"; |
| 595 | case CondNS: return "ns"; |
| 596 | case CondP: return "p"; |
| 597 | case CondNP: return "np"; |
| 598 | case CondL: return "l"; |
| 599 | case CondNL: return "nl"; |
| 600 | case CondLE: return "le"; |
| 601 | case CondNLE: return "nle"; |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 602 | case CondAlways: return "ALWAYS"; |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 603 | default: vpanic("name_Condcode"); |
| 604 | } |
| 605 | } |
| 606 | |
| 607 | static Condcode positiveIse_Condcode ( Condcode cond, |
| 608 | Bool* needInvert ) |
| 609 | { |
| 610 | vassert(cond >= CondO && cond <= CondNLE); |
| 611 | if (cond & 1) { |
| 612 | *needInvert = True; |
| 613 | return cond-1; |
| 614 | } else { |
| 615 | *needInvert = False; |
| 616 | return cond; |
| 617 | } |
| 618 | } |
| 619 | |
| 620 | |
sewardj | 84ff065 | 2004-08-23 16:16:08 +0000 | [diff] [blame] | 621 | #if 0 |
| 622 | /* UNUSED -- DELETE */ |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 623 | /* Get some particular flag to the lowest bit in a word. It's not |
| 624 | masked, tho. */ |
| 625 | static IRExpr* flag_to_bit0 ( UInt ccmask, IRTemp eflags ) |
| 626 | { |
| 627 | Int shifts = 0; |
| 628 | vassert(ccmask == CC_MASK_C || ccmask == CC_MASK_P |
| 629 | || ccmask == CC_MASK_A || ccmask == CC_MASK_Z |
| 630 | || ccmask == CC_MASK_S || ccmask == CC_MASK_O); |
| 631 | while ((ccmask & 1) == 0) { |
| 632 | ccmask >>= 1; |
| 633 | shifts++; |
| 634 | vassert(ccmask != 0); |
| 635 | } |
| 636 | if (shifts == 0) |
| 637 | return mkexpr(eflags); |
| 638 | else |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 639 | return binop(Iop_Shr32, mkexpr(eflags), mkU8(shifts)); |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 640 | } |
| 641 | |
| 642 | |
| 643 | /* Calculate the eflags, and hence return a 1-bit expression |
| 644 | which is 1 iff the given condition-code test would succeed. |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 645 | Returns a value :: Ity_Bit. |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 646 | */ |
| 647 | static IRExpr* calculate_condition ( Condcode cond ) |
| 648 | { |
| 649 | IRExpr *e; |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 650 | IRTemp eflags = newTemp(Ity_I32); |
| 651 | Bool invert = (cond & 1) == 1; |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 652 | |
| 653 | assign( eflags, cond == CondB ? mk_calculate_eflags_c() |
| 654 | : mk_calculate_eflags_all() ); |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 655 | |
| 656 | switch (cond) { |
sewardj | 56296d8 | 2004-07-30 01:52:45 +0000 | [diff] [blame] | 657 | case CondNO: |
| 658 | case CondO: /* OF == 1 */ |
| 659 | e = flag_to_bit0( CC_MASK_O, eflags ); |
| 660 | break; |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 661 | case CondNZ: |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 662 | case CondZ: /* ZF == 1 */ |
| 663 | e = flag_to_bit0( CC_MASK_Z, eflags ); |
| 664 | break; |
sewardj | 71a6536 | 2004-07-28 01:48:34 +0000 | [diff] [blame] | 665 | case CondNB: |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 666 | case CondB: /* CF == 1 */ |
| 667 | e = flag_to_bit0( CC_MASK_C, eflags ); |
| 668 | break; |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 669 | case CondNBE: |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 670 | case CondBE: /* (CF or ZF) == 1 */ |
| 671 | e = binop(Iop_Or32, |
| 672 | flag_to_bit0(CC_MASK_C,eflags), |
| 673 | flag_to_bit0(CC_MASK_Z,eflags) ); |
| 674 | break; |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 675 | case CondNS: |
| 676 | case CondS: /* SF == 1 */ |
| 677 | e = flag_to_bit0( CC_MASK_S, eflags ); |
| 678 | break; |
sewardj | 56296d8 | 2004-07-30 01:52:45 +0000 | [diff] [blame] | 679 | case CondNP: |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 680 | case CondP: /* PF == 1 */ |
| 681 | e = flag_to_bit0( CC_MASK_P, eflags ); |
| 682 | break; |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 683 | case CondNL: |
| 684 | case CondL: /* (SF xor OF) == 1 */ |
| 685 | e = binop(Iop_Xor32, |
| 686 | flag_to_bit0(CC_MASK_S,eflags), |
| 687 | flag_to_bit0(CC_MASK_O,eflags) |
| 688 | ); |
| 689 | break; |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 690 | case CondNLE: |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 691 | case CondLE: /* ((SF xor OF) or ZF) == 1 */ |
| 692 | e = binop(Iop_Or32, |
| 693 | binop(Iop_Xor32, |
| 694 | flag_to_bit0(CC_MASK_S,eflags), |
| 695 | flag_to_bit0(CC_MASK_O,eflags) |
| 696 | ), |
| 697 | flag_to_bit0(CC_MASK_Z,eflags)); |
| 698 | break; |
| 699 | default: |
| 700 | vex_printf("calculate_condition(%d)\n", (Int)cond); |
| 701 | vpanic("calculate_condition(x86)"); |
| 702 | } |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 703 | return |
| 704 | invert ? unop(Iop_32to1, unop(Iop_Not32, e)) |
| 705 | : unop(Iop_32to1, e); |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 706 | } |
sewardj | 84ff065 | 2004-08-23 16:16:08 +0000 | [diff] [blame] | 707 | #endif |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 708 | |
| 709 | |
sewardj | 3af115f | 2004-07-14 02:46:52 +0000 | [diff] [blame] | 710 | /* -------------- Helpers for ADD/SUB with carry. -------------- */ |
| 711 | |
| 712 | /* Given ta1, ta2 and tdst, compute tdst = ADC(ta1,ta2) and set flags |
| 713 | appropriately. Depends critically on the relative ordering of |
| 714 | CC_OP_ADD{B,W,L} vs CC_OP_ADC{B,W,L}. |
| 715 | */ |
| 716 | static void helper_ADC ( Int sz, |
| 717 | IRTemp tdst, IRTemp ta1, IRTemp ta2 ) |
| 718 | { |
| 719 | UInt thunkOp; |
| 720 | IRExpr* thunkExpr; |
| 721 | IRType ty = szToITy(sz); |
| 722 | IRTemp oldc = newTemp(Ity_I32); |
| 723 | IROp plus = mkSizedOp(ty,Iop_Add8); |
| 724 | |
| 725 | /* oldc = old carry flag, 0 or 1 */ |
sewardj | a238471 | 2004-07-29 14:36:40 +0000 | [diff] [blame] | 726 | assign( oldc, binop(Iop_And32, |
sewardj | 3af115f | 2004-07-14 02:46:52 +0000 | [diff] [blame] | 727 | mk_calculate_eflags_c(), |
sewardj | a238471 | 2004-07-29 14:36:40 +0000 | [diff] [blame] | 728 | mkU32(1)) ); |
sewardj | 3af115f | 2004-07-14 02:46:52 +0000 | [diff] [blame] | 729 | |
sewardj | a238471 | 2004-07-29 14:36:40 +0000 | [diff] [blame] | 730 | assign(tdst, binop(plus, |
| 731 | binop(plus,mkexpr(ta1),mkexpr(ta2)), |
| 732 | narrowTo(ty,mkexpr(oldc)))); |
| 733 | |
| 734 | vassert(sz == 1 || sz == 2 || sz == 4); |
| 735 | thunkOp = sz==4 ? CC_OP_ADDL : (sz==2 ? CC_OP_ADDW : CC_OP_ADDB); |
sewardj | 3af115f | 2004-07-14 02:46:52 +0000 | [diff] [blame] | 736 | |
| 737 | /* This dynamically calculates the thunk op number. |
| 738 | 3 * the old carry flag is added, so (eg) it gives |
| 739 | CC_OP_ADDL if old carry was zero, and CC_OP_ADCL if |
| 740 | old carry was one. */ |
| 741 | thunkExpr = binop(Iop_Add32, |
| 742 | mkU32(thunkOp), |
| 743 | binop(Iop_Mul32, mkexpr(oldc), mkU32(3))); |
| 744 | |
sewardj | eeb9ef8 | 2004-07-15 12:39:03 +0000 | [diff] [blame] | 745 | stmt( IRStmt_Put( OFFB_CC_OP, thunkExpr ) ); |
| 746 | stmt( IRStmt_Put( OFFB_CC_SRC, mkexpr(ta2) ) ); |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 747 | stmt( IRStmt_Put( OFFB_CC_DST, mkexpr(ta1) ) ); |
sewardj | 3af115f | 2004-07-14 02:46:52 +0000 | [diff] [blame] | 748 | } |
| 749 | |
| 750 | |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 751 | /* Given ta1, ta2 and tdst, compute tdst = SBB(ta1,ta2) and set flags |
| 752 | appropriately. Depends critically on the relative ordering of |
| 753 | CC_OP_SUB{B,W,L} vs CC_OP_SBB{B,W,L}. |
| 754 | */ |
| 755 | static void helper_SBB ( Int sz, |
| 756 | IRTemp tdst, IRTemp ta1, IRTemp ta2 ) |
| 757 | { |
| 758 | UInt thunkOp; |
| 759 | IRExpr* thunkExpr; |
| 760 | IRType ty = szToITy(sz); |
| 761 | IRTemp oldc = newTemp(Ity_I32); |
| 762 | IROp minus = mkSizedOp(ty,Iop_Sub8); |
| 763 | |
| 764 | /* oldc = old carry flag, 0 or 1 */ |
sewardj | a238471 | 2004-07-29 14:36:40 +0000 | [diff] [blame] | 765 | assign( oldc, binop(Iop_And32, |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 766 | mk_calculate_eflags_c(), |
sewardj | a238471 | 2004-07-29 14:36:40 +0000 | [diff] [blame] | 767 | mkU32(1)) ); |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 768 | |
sewardj | a238471 | 2004-07-29 14:36:40 +0000 | [diff] [blame] | 769 | assign(tdst, binop(minus, |
| 770 | binop(minus,mkexpr(ta1),mkexpr(ta2)), |
| 771 | narrowTo(ty,mkexpr(oldc)))); |
| 772 | |
| 773 | vassert(sz == 1 || sz == 2 || sz == 4); |
| 774 | thunkOp = sz==4 ? CC_OP_SUBL : (sz==2 ? CC_OP_SUBW : CC_OP_SUBB); |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 775 | |
| 776 | /* This dynamically calculates the thunk op number. |
| 777 | 3 * the old carry flag is added, so (eg) it gives |
| 778 | CC_OP_SUBL if old carry was zero, and CC_OP_SBBL if |
| 779 | old carry was one. */ |
| 780 | thunkExpr = binop(Iop_Add32, |
| 781 | mkU32(thunkOp), |
| 782 | binop(Iop_Mul32, mkexpr(oldc), mkU32(3))); |
| 783 | |
| 784 | stmt( IRStmt_Put( OFFB_CC_OP, thunkExpr ) ); |
| 785 | stmt( IRStmt_Put( OFFB_CC_SRC, mkexpr(ta2) ) ); |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 786 | stmt( IRStmt_Put( OFFB_CC_DST, mkexpr(ta1) ) ); |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 787 | } |
| 788 | |
| 789 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 790 | //-- /*------------------------------------------------------------*/ |
| 791 | //-- /*--- CPU feature set stuff ---*/ |
| 792 | //-- /*--- This is a little out of place here, but it will do ---*/ |
| 793 | //-- /*--- for now. ---*/ |
| 794 | //-- /*------------------------------------------------------------*/ |
| 795 | //-- |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 796 | //-- #define VG_CPU_VENDOR_GENERIC 0 |
| 797 | //-- #define VG_CPU_VENDOR_INTEL 1 |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 798 | //-- #define VG_CPU_VENDOR_AMD 2 |
| 799 | //-- |
| 800 | //-- static Int cpu_vendor = VG_CPU_VENDOR_GENERIC; |
| 801 | //-- |
| 802 | //-- static const struct cpu_vendor { |
| 803 | //-- const Char *vendorstr; |
| 804 | //-- Int vendorid; |
| 805 | //-- } cpu_vendors[] = { |
| 806 | //-- { "GenuineIntel", VG_CPU_VENDOR_INTEL }, |
| 807 | //-- { "AuthenticAMD", VG_CPU_VENDOR_AMD }, |
| 808 | //-- }; |
| 809 | //-- |
| 810 | //-- static Int cpuid_level = -2; /* -2 -> not initialized */ |
| 811 | //-- static UInt cpu_features[VG_N_FEATURE_WORDS]; |
| 812 | //-- |
| 813 | //-- /* Standard macro to see if a specific flag is changeable */ |
| 814 | //-- static inline Bool flag_is_changeable(UInt flag) |
| 815 | //-- { |
| 816 | //-- UInt f1, f2; |
| 817 | //-- |
| 818 | //-- asm("pushfl\n\t" |
| 819 | //-- "pushfl\n\t" |
| 820 | //-- "popl %0\n\t" |
| 821 | //-- "movl %0,%1\n\t" |
| 822 | //-- "xorl %2,%0\n\t" |
| 823 | //-- "pushl %0\n\t" |
| 824 | //-- "popfl\n\t" |
| 825 | //-- "pushfl\n\t" |
| 826 | //-- "popl %0\n\t" |
| 827 | //-- "popfl\n\t" |
| 828 | //-- : "=&r" (f1), "=&r" (f2) |
| 829 | //-- : "ir" (flag)); |
| 830 | //-- |
| 831 | //-- return ((f1^f2) & flag) != 0; |
| 832 | //-- } |
| 833 | //-- |
| 834 | //-- |
| 835 | //-- /* Probe for the CPUID instruction */ |
| 836 | //-- static Bool has_cpuid(void) |
| 837 | //-- { |
| 838 | //-- return flag_is_changeable(EFlagID); |
| 839 | //-- } |
| 840 | //-- |
| 841 | //-- static void get_cpu_features(void) |
| 842 | //-- { |
| 843 | //-- Char vendorstr[13]; |
| 844 | //-- Int i; |
| 845 | //-- |
| 846 | //-- if (!has_cpuid()) { |
| 847 | //-- cpuid_level = -1; |
| 848 | //-- return; |
| 849 | //-- } |
| 850 | //-- |
| 851 | //-- cpu_features[VG_INT_FEAT] |= (1 << (VG_X86_FEAT_CPUID%32)); |
| 852 | //-- |
| 853 | //-- VG_(cpuid)(0, &cpuid_level, (UInt *)&vendorstr[0], (UInt *)&vendorstr[8], (UInt *)&vendorstr[4]); |
| 854 | //-- vendorstr[12] = '\0'; |
| 855 | //-- |
| 856 | //-- for(i = 0; i < sizeof(cpu_vendors)/sizeof(*cpu_vendors); i++) |
| 857 | //-- if (VG_(memcmp)(vendorstr, cpu_vendors[i].vendorstr, 12) == 0) { |
| 858 | //-- cpu_vendor = cpu_vendors[i].vendorid; |
| 859 | //-- break; |
| 860 | //-- } |
| 861 | //-- |
| 862 | //-- if (cpuid_level >= 1) |
| 863 | //-- VG_(cpuid)(1, NULL, NULL, &cpu_features[VG_EXT_FEAT], &cpu_features[VG_X86_FEAT]); |
| 864 | //-- |
| 865 | //-- switch(cpu_vendor) { |
| 866 | //-- case VG_CPU_VENDOR_AMD: |
| 867 | //-- /* get AMD-specific flags */ |
| 868 | //-- VG_(cpuid)(0x80000001, NULL, NULL, NULL, &cpu_features[VG_AMD_FEAT]); |
| 869 | //-- break; |
| 870 | //-- |
| 871 | //-- default: |
| 872 | //-- break; |
| 873 | //-- } |
| 874 | //-- } |
| 875 | //-- |
| 876 | //-- Bool VG_(cpu_has_feature)(UInt feature) |
| 877 | //-- { |
| 878 | //-- UInt word = feature / 32; |
| 879 | //-- UInt bit = feature % 32; |
| 880 | //-- |
| 881 | //-- if (cpuid_level == -2) |
| 882 | //-- get_cpu_features(); |
| 883 | //-- |
| 884 | //-- vg_assert(word >= 0 && word < VG_N_FEATURE_WORDS); |
| 885 | //-- |
| 886 | //-- return !!(cpu_features[word] & (1 << bit)); |
| 887 | //-- } |
| 888 | //-- |
| 889 | //-- /* The set of features we're willing to support for the client |
| 890 | //-- |
| 891 | //-- This includes supported instruction set extensions, plus any |
| 892 | //-- extensions which don't have any user-mode visible effect (but the |
| 893 | //-- client may find interesting). |
| 894 | //-- */ |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 895 | #define VG_X86_SUPPORTED_FEATURES \ |
| 896 | ((1 << VG_X86_FEAT_FPU) | \ |
| 897 | (1 << VG_X86_FEAT_VME) | \ |
| 898 | (1 << VG_X86_FEAT_DE) | \ |
| 899 | (1 << VG_X86_FEAT_PSE) | \ |
| 900 | (1 << VG_X86_FEAT_TSC) | \ |
| 901 | (0 << VG_X86_FEAT_MSR) | \ |
| 902 | (1 << VG_X86_FEAT_PAE) | \ |
| 903 | (1 << VG_X86_FEAT_MCE) | \ |
| 904 | (1 << VG_X86_FEAT_CX8) | \ |
| 905 | (1 << VG_X86_FEAT_APIC) | \ |
| 906 | (0 << VG_X86_FEAT_SEP) | \ |
| 907 | (1 << VG_X86_FEAT_MTRR) | \ |
| 908 | (1 << VG_X86_FEAT_PGE) | \ |
| 909 | (1 << VG_X86_FEAT_MCA) | \ |
| 910 | (1 << VG_X86_FEAT_CMOV) | \ |
| 911 | (1 << VG_X86_FEAT_PAT) | \ |
| 912 | (1 << VG_X86_FEAT_PSE36) | \ |
| 913 | (0 << VG_X86_FEAT_CLFSH) | \ |
| 914 | (1 << VG_X86_FEAT_DS) | \ |
| 915 | (1 << VG_X86_FEAT_ACPI) | \ |
| 916 | (1 << VG_X86_FEAT_MMX) | \ |
| 917 | (1 << VG_X86_FEAT_FXSR) | \ |
| 918 | (1 << VG_X86_FEAT_SSE) | \ |
| 919 | (1 << VG_X86_FEAT_SSE2) | \ |
| 920 | (1 << VG_X86_FEAT_SS) | \ |
| 921 | (1 << VG_X86_FEAT_HT) | \ |
| 922 | (1 << VG_X86_FEAT_TM) | \ |
| 923 | (0 << VG_X86_FEAT_IA64) | \ |
| 924 | (1 << VG_X86_FEAT_PBE)) |
| 925 | |
| 926 | #define VG_AMD_SUPPORTED_FEATURES \ |
| 927 | ((0 << (VG_AMD_FEAT_SYSCALL % 32)) | \ |
| 928 | (0 << (VG_AMD_FEAT_NXP % 32)) | \ |
| 929 | (1 << (VG_AMD_FEAT_MMXEXT % 32)) | \ |
| 930 | (0 << (VG_AMD_FEAT_FFXSR % 32)) | \ |
| 931 | (0 << (VG_AMD_FEAT_LONGMODE % 32)) | \ |
| 932 | (0 << (VG_AMD_FEAT_3DNOWEXT % 32)) | \ |
| 933 | (0 << (VG_AMD_FEAT_3DNOW % 32)) | \ |
| 934 | /* Common bits between standard features and AMD features */ \ |
| 935 | (1 << VG_X86_FEAT_FPU) | \ |
| 936 | (1 << VG_X86_FEAT_VME) | \ |
| 937 | (1 << VG_X86_FEAT_DE) | \ |
| 938 | (1 << VG_X86_FEAT_PSE) | \ |
| 939 | (1 << VG_X86_FEAT_TSC) | \ |
| 940 | (0 << VG_X86_FEAT_MSR) | \ |
| 941 | (1 << VG_X86_FEAT_PAE) | \ |
| 942 | (1 << VG_X86_FEAT_MCE) | \ |
| 943 | (1 << VG_X86_FEAT_CX8) | \ |
| 944 | (1 << VG_X86_FEAT_APIC) | \ |
| 945 | (1 << VG_X86_FEAT_MTRR) | \ |
| 946 | (1 << VG_X86_FEAT_PGE) | \ |
| 947 | (1 << VG_X86_FEAT_MCA) | \ |
| 948 | (1 << VG_X86_FEAT_CMOV) | \ |
| 949 | (1 << VG_X86_FEAT_PAT) | \ |
| 950 | (1 << VG_X86_FEAT_PSE36) | \ |
| 951 | (1 << VG_X86_FEAT_MMX) | \ |
| 952 | (1 << VG_X86_FEAT_FXSR)) |
| 953 | |
| 954 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 955 | //-- /* |
| 956 | //-- For simulating the cpuid instruction, we will |
| 957 | //-- issue a "real" cpuid instruction and then mask out |
| 958 | //-- the bits of the features we do not support currently (3dnow mostly). |
| 959 | //-- We also claim to not support most CPUID operations. |
| 960 | //-- |
| 961 | //-- Dirk Mueller <mueller@kde.org> |
| 962 | //-- |
| 963 | //-- http://www.sandpile.org/ia32/cpuid.htm |
| 964 | //-- |
| 965 | //-- references: |
| 966 | //-- |
| 967 | //-- pre-MMX pentium: |
| 968 | //-- |
| 969 | //-- <werner> cpuid words (0): 0x1 0x756e6547 0x6c65746e 0x49656e69 |
| 970 | //-- <werner> cpuid words (1): 0x52b 0x0 0x0 0x1bf |
| 971 | //-- |
| 972 | //-- Updated to be more extensible about future vendor extensions and |
| 973 | //-- vendor-specific parts of CPUID. |
| 974 | //-- */ |
| 975 | //-- void VG_(helperc_CPUID)(UInt op, UInt *eax_ret, UInt *ebx_ret, UInt *ecx_ret, UInt *edx_ret) |
| 976 | //-- { |
| 977 | //-- UInt eax, ebx, ecx, edx; |
| 978 | //-- |
| 979 | //-- if (cpuid_level == -2) |
| 980 | //-- get_cpu_features(); /* for cpu_vendor */ |
| 981 | //-- |
| 982 | //-- VG_(cpuid)(op, &eax, &ebx, &ecx, &edx); |
| 983 | //-- |
| 984 | //-- /* Common mangling */ |
| 985 | //-- switch(op) { |
| 986 | //-- case 1: |
| 987 | //-- edx &= VG_X86_SUPPORTED_FEATURES; |
| 988 | //-- break; |
| 989 | //-- |
| 990 | //-- case 0xd8000000: { |
| 991 | //-- /* Implement some private information at 0xd8000000 */ |
| 992 | //-- static const Char valgrind_vendor[] = "ValgrindVCPU"; |
| 993 | //-- |
| 994 | //-- eax = 0xd8000000; /* max request */ |
| 995 | //-- ebx = *(UInt *)&valgrind_vendor[0]; |
| 996 | //-- ecx = *(UInt *)&valgrind_vendor[8]; |
| 997 | //-- edx = *(UInt *)&valgrind_vendor[4]; |
| 998 | //-- } |
| 999 | //-- break; |
| 1000 | //-- } |
| 1001 | //-- |
| 1002 | //-- /* Vendor-specific mangling of the results */ |
| 1003 | //-- switch(cpu_vendor) { |
| 1004 | //-- case VG_CPU_VENDOR_INTEL: |
| 1005 | //-- switch(op) { |
| 1006 | //-- case 1: |
| 1007 | //-- ecx = 0; /* mask out all extended features for now */ |
| 1008 | //-- break; |
| 1009 | //-- |
| 1010 | //-- case 0x80000001: |
| 1011 | //-- ebx = ecx = edx = 0; |
| 1012 | //-- break; |
| 1013 | //-- } |
| 1014 | //-- break; |
| 1015 | //-- |
| 1016 | //-- case VG_CPU_VENDOR_AMD: |
| 1017 | //-- switch(op) { |
| 1018 | //-- case 0x80000001: |
| 1019 | //-- edx &= VG_AMD_SUPPORTED_FEATURES; |
| 1020 | //-- break; |
| 1021 | //-- } |
| 1022 | //-- break; |
| 1023 | //-- } |
| 1024 | //-- |
| 1025 | //-- *eax_ret = eax; |
| 1026 | //-- *ebx_ret = ebx; |
| 1027 | //-- *ecx_ret = ecx; |
| 1028 | //-- *edx_ret = edx; |
| 1029 | //-- } |
| 1030 | //-- |
| 1031 | //-- |
| 1032 | //-- /*------------------------------------------------------------*/ |
| 1033 | //-- /*--- Here so it can be inlined everywhere. ---*/ |
| 1034 | //-- /*------------------------------------------------------------*/ |
| 1035 | //-- |
| 1036 | //-- /* Allocate a new temp reg number. */ |
| 1037 | //-- __inline__ Int VG_(get_new_temp) ( UCodeBlock* cb ) |
| 1038 | //-- { |
| 1039 | //-- Int t = cb->nextTemp; |
| 1040 | //-- cb->nextTemp += 2; |
| 1041 | //-- return t; |
| 1042 | //-- } |
| 1043 | //-- |
| 1044 | //-- Int VG_(get_new_shadow) ( UCodeBlock* cb ) |
| 1045 | //-- { |
| 1046 | //-- Int t = cb->nextTemp; |
| 1047 | //-- cb->nextTemp += 2; |
| 1048 | //-- return SHADOW(t); |
| 1049 | //-- } |
| 1050 | |
| 1051 | |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 1052 | |
| 1053 | static Char* nameGrp1 ( Int opc_aux ) |
| 1054 | { |
| 1055 | static Char* grp1_names[8] |
| 1056 | = { "add", "or", "adc", "sbb", "and", "sub", "xor", "cmp" }; |
| 1057 | if (opc_aux < 0 || opc_aux > 7) vpanic("nameGrp1(x86)"); |
| 1058 | return grp1_names[opc_aux]; |
| 1059 | } |
| 1060 | |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 1061 | static Char* nameGrp2 ( Int opc_aux ) |
| 1062 | { |
| 1063 | static Char* grp2_names[8] |
| 1064 | = { "rol", "ror", "rcl", "rcr", "shl", "shr", "shl", "sar" }; |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 1065 | if (opc_aux < 0 || opc_aux > 7) vpanic("nameGrp2(x86)"); |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 1066 | return grp2_names[opc_aux]; |
| 1067 | } |
| 1068 | |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 1069 | static Char* nameGrp4 ( Int opc_aux ) |
| 1070 | { |
| 1071 | static Char* grp4_names[8] |
| 1072 | = { "inc", "dec", "???", "???", "???", "???", "???", "???" }; |
| 1073 | if (opc_aux < 0 || opc_aux > 1) vpanic("nameGrp4(x86)"); |
| 1074 | return grp4_names[opc_aux]; |
| 1075 | } |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 1076 | |
| 1077 | static Char* nameGrp5 ( Int opc_aux ) |
| 1078 | { |
| 1079 | static Char* grp5_names[8] |
| 1080 | = { "inc", "dec", "call*", "call*", "jmp*", "jmp*", "push", "???" }; |
| 1081 | if (opc_aux < 0 || opc_aux > 6) vpanic("nameGrp5(x86)"); |
| 1082 | return grp5_names[opc_aux]; |
| 1083 | } |
| 1084 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 1085 | //-- static Char* nameGrp8 ( Int opc_aux ) |
| 1086 | //-- { |
| 1087 | //-- static Char* grp8_names[8] |
| 1088 | //-- = { "???", "???", "???", "???", "bt", "bts", "btr", "btc" }; |
| 1089 | //-- if (opc_aux < 4 || opc_aux > 7) VG_(core_panic)("nameGrp8"); |
| 1090 | //-- return grp8_names[opc_aux]; |
| 1091 | //-- } |
| 1092 | |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 1093 | static Char* nameIReg ( Int size, Int reg ) |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 1094 | { |
| 1095 | static Char* ireg32_names[8] |
| 1096 | = { "%eax", "%ecx", "%edx", "%ebx", |
| 1097 | "%esp", "%ebp", "%esi", "%edi" }; |
| 1098 | static Char* ireg16_names[8] |
| 1099 | = { "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di" }; |
| 1100 | static Char* ireg8_names[8] |
| 1101 | = { "%al", "%cl", "%dl", "%bl", |
| 1102 | "%ah{sp}", "%ch{bp}", "%dh{si}", "%bh{di}" }; |
| 1103 | if (reg < 0 || reg > 7) goto bad; |
| 1104 | switch (size) { |
| 1105 | case 4: return ireg32_names[reg]; |
| 1106 | case 2: return ireg16_names[reg]; |
| 1107 | case 1: return ireg8_names[reg]; |
| 1108 | } |
| 1109 | bad: |
| 1110 | vpanic("nameIReg(X86)"); |
| 1111 | return NULL; /*notreached*/ |
| 1112 | } |
| 1113 | |
| 1114 | //-- const Char* VG_(name_of_seg_reg) ( Int sreg ) |
| 1115 | //-- { |
| 1116 | //-- switch (sreg) { |
| 1117 | //-- case R_ES: return "%es"; |
| 1118 | //-- case R_CS: return "%cs"; |
| 1119 | //-- case R_SS: return "%ss"; |
| 1120 | //-- case R_DS: return "%ds"; |
| 1121 | //-- case R_FS: return "%fs"; |
| 1122 | //-- case R_GS: return "%gs"; |
| 1123 | //-- default: VG_(core_panic)("nameOfSegReg"); |
| 1124 | //-- } |
| 1125 | //-- } |
| 1126 | //-- |
| 1127 | //-- const Char* VG_(name_of_mmx_reg) ( Int mmxreg ) |
| 1128 | //-- { |
| 1129 | //-- static const Char* mmx_names[8] |
| 1130 | //-- = { "%mm0", "%mm1", "%mm2", "%mm3", "%mm4", "%mm5", "%mm6", "%mm7" }; |
| 1131 | //-- if (mmxreg < 0 || mmxreg > 7) VG_(core_panic)("name_of_mmx_reg"); |
| 1132 | //-- return mmx_names[mmxreg]; |
| 1133 | //-- } |
| 1134 | //-- |
| 1135 | //-- const Char* VG_(name_of_xmm_reg) ( Int xmmreg ) |
| 1136 | //-- { |
| 1137 | //-- static const Char* xmm_names[8] |
| 1138 | //-- = { "%xmm0", "%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5", "%xmm6", "%xmm7" }; |
| 1139 | //-- if (xmmreg < 0 || xmmreg > 7) VG_(core_panic)("name_of_xmm_reg"); |
| 1140 | //-- return xmm_names[xmmreg]; |
| 1141 | //-- } |
| 1142 | //-- |
| 1143 | //-- const Char* VG_(name_of_mmx_gran) ( UChar gran ) |
| 1144 | //-- { |
| 1145 | //-- switch (gran) { |
| 1146 | //-- case 0: return "b"; |
| 1147 | //-- case 1: return "w"; |
| 1148 | //-- case 2: return "d"; |
| 1149 | //-- case 3: return "q"; |
| 1150 | //-- default: VG_(core_panic)("name_of_mmx_gran"); |
| 1151 | //-- } |
| 1152 | //-- } |
| 1153 | |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 1154 | static Char nameISize ( Int size ) |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 1155 | { |
| 1156 | switch (size) { |
| 1157 | case 4: return 'l'; |
| 1158 | case 2: return 'w'; |
| 1159 | case 1: return 'b'; |
| 1160 | default: vpanic("nameISize(x86)"); |
| 1161 | } |
| 1162 | } |
| 1163 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 1164 | //-- __inline__ static UInt LOW24 ( UInt x ) |
| 1165 | //-- { |
| 1166 | //-- return x & 0x00FFFFFF; |
| 1167 | //-- } |
| 1168 | //-- |
| 1169 | //-- __inline__ static UInt HI8 ( UInt x ) |
| 1170 | //-- { |
| 1171 | //-- return x >> 24; |
| 1172 | //-- } |
| 1173 | //-- |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 1174 | //-- /*------------------------------------------------------------*/ |
| 1175 | //-- /*--- Flag-related helpers. ---*/ |
| 1176 | //-- /*------------------------------------------------------------*/ |
| 1177 | //-- |
| 1178 | //-- static void setFlagsFromUOpcode ( UCodeBlock* cb, Int uopc ) |
| 1179 | //-- { |
| 1180 | //-- switch (uopc) { |
| 1181 | //-- case XOR: case OR: case AND: |
| 1182 | //-- uFlagsRWU(cb, FlagsEmpty, FlagsOSZCP, FlagA); break; |
| 1183 | //-- case ADC: case SBB: |
| 1184 | //-- uFlagsRWU(cb, FlagC, FlagsOSZACP, FlagsEmpty); break; |
| 1185 | //-- case MUL: case UMUL: |
| 1186 | //-- uFlagsRWU(cb, FlagsEmpty, FlagsOC, FlagsSZAP); break; |
| 1187 | //-- case ADD: case SUB: case NEG: |
| 1188 | //-- uFlagsRWU(cb, FlagsEmpty, FlagsOSZACP, FlagsEmpty); break; |
| 1189 | //-- case INC: case DEC: |
| 1190 | //-- uFlagsRWU(cb, FlagsEmpty, FlagsOSZAP, FlagsEmpty); break; |
| 1191 | //-- case SHR: case SAR: case SHL: |
| 1192 | //-- uFlagsRWU(cb, FlagsEmpty, FlagsOSZCP, FlagA); break; |
| 1193 | //-- case ROL: case ROR: |
| 1194 | //-- uFlagsRWU(cb, FlagsEmpty, FlagsOC, FlagsEmpty); break; |
| 1195 | //-- case RCR: case RCL: |
| 1196 | //-- uFlagsRWU(cb, FlagC, FlagsOC, FlagsEmpty); break; |
| 1197 | //-- case NOT: |
| 1198 | //-- uFlagsRWU(cb, FlagsEmpty, FlagsEmpty, FlagsEmpty); break; |
| 1199 | //-- default: |
| 1200 | //-- VG_(printf)("unhandled case is %s\n", |
| 1201 | //-- VG_(name_UOpcode)(True, uopc)); |
| 1202 | //-- VG_(core_panic)("setFlagsFromUOpcode: unhandled case"); |
| 1203 | //-- } |
| 1204 | //-- } |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 1205 | |
| 1206 | /*------------------------------------------------------------*/ |
| 1207 | /*--- JMP helpers ---*/ |
| 1208 | /*------------------------------------------------------------*/ |
| 1209 | |
sewardj | 78c19df | 2004-07-12 22:49:27 +0000 | [diff] [blame] | 1210 | static void jmp_lit( IRJumpKind kind, Addr32 d32 ) |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 1211 | { |
sewardj | e539a40 | 2004-07-14 18:24:17 +0000 | [diff] [blame] | 1212 | irbb->next = mkU32(d32); |
| 1213 | irbb->jumpkind = kind; |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 1214 | } |
| 1215 | |
sewardj | 78c19df | 2004-07-12 22:49:27 +0000 | [diff] [blame] | 1216 | static void jmp_treg( IRJumpKind kind, IRTemp t ) |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 1217 | { |
sewardj | e539a40 | 2004-07-14 18:24:17 +0000 | [diff] [blame] | 1218 | irbb->next = mkexpr(t); |
| 1219 | irbb->jumpkind = kind; |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 1220 | } |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1221 | |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 1222 | static void jcc_01( Condcode cond, Addr32 d32_false, Addr32 d32_true ) |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1223 | { |
| 1224 | Bool invert; |
| 1225 | Condcode condPos; |
| 1226 | condPos = positiveIse_Condcode ( cond, &invert ); |
| 1227 | if (invert) { |
sewardj | 78c19df | 2004-07-12 22:49:27 +0000 | [diff] [blame] | 1228 | stmt( IRStmt_Exit( calculate_condition(condPos), |
| 1229 | IRConst_U32(d32_false) ) ); |
sewardj | e539a40 | 2004-07-14 18:24:17 +0000 | [diff] [blame] | 1230 | irbb->next = mkU32(d32_true); |
| 1231 | irbb->jumpkind = Ijk_Boring; |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1232 | } else { |
sewardj | 78c19df | 2004-07-12 22:49:27 +0000 | [diff] [blame] | 1233 | stmt( IRStmt_Exit( calculate_condition(condPos), |
| 1234 | IRConst_U32(d32_true) ) ); |
sewardj | e539a40 | 2004-07-14 18:24:17 +0000 | [diff] [blame] | 1235 | irbb->next = mkU32(d32_false); |
| 1236 | irbb->jumpkind = Ijk_Boring; |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1237 | } |
| 1238 | } |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 1239 | |
| 1240 | |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 1241 | /*------------------------------------------------------------*/ |
| 1242 | /*--- Disassembling addressing modes ---*/ |
| 1243 | /*------------------------------------------------------------*/ |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 1244 | |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 1245 | static |
| 1246 | UChar* sorbTxt ( UChar sorb ) |
| 1247 | { |
| 1248 | switch (sorb) { |
| 1249 | case 0: return ""; /* no override */ |
| 1250 | case 0x3E: return "%ds"; |
| 1251 | case 0x26: return "%es:"; |
| 1252 | case 0x64: return "%fs:"; |
| 1253 | case 0x65: return "%gs:"; |
| 1254 | default: vpanic("sorbTxt(x86)"); |
| 1255 | } |
| 1256 | } |
| 1257 | |
| 1258 | |
| 1259 | /* Tmp is a TempReg holding a virtual address. Convert it to a linear |
| 1260 | address by adding any required segment override as indicated by |
| 1261 | sorb. */ |
| 1262 | static |
| 1263 | IRExpr* handleSegOverride ( UChar sorb, IRExpr* virtual ) |
| 1264 | { |
| 1265 | //Int sreg, tsreg; |
| 1266 | |
| 1267 | if (sorb == 0) |
| 1268 | /* the common case - no override */ |
| 1269 | return virtual; |
| 1270 | |
| 1271 | unimplemented("segment overrides in new x86->IR phase"); |
| 1272 | #if 0 |
| 1273 | switch (sorb) { |
| 1274 | case 0x3E: sreg = R_DS; break; |
| 1275 | case 0x26: sreg = R_ES; break; |
| 1276 | case 0x64: sreg = R_FS; break; |
| 1277 | case 0x65: sreg = R_GS; break; |
| 1278 | default: VG_(core_panic)("handleSegOverride"); |
| 1279 | } |
| 1280 | |
| 1281 | tsreg = newTemp(cb); |
| 1282 | |
| 1283 | /* sreg -> tsreg */ |
| 1284 | uInstr2(cb, GETSEG, 2, ArchRegS, sreg, TempReg, tsreg ); |
| 1285 | |
| 1286 | /* tmp += segment_base(ldt[tsreg]); also do limit check */ |
| 1287 | uInstr2(cb, USESEG, 0, TempReg, tsreg, TempReg, tmp ); |
| 1288 | #endif |
| 1289 | } |
| 1290 | |
| 1291 | |
| 1292 | /* Generate IR to calculate an address indicated by a ModRM and |
| 1293 | following SIB bytes. The expression, and the number of bytes in |
| 1294 | the address mode, are returned. Note that this fn should not be |
| 1295 | called if the R/M part of the address denotes a register instead of |
| 1296 | memory. If print_codegen is true, text of the addressing mode is |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1297 | placed in buf. |
| 1298 | |
| 1299 | The computed address is stored in a new tempreg, and the |
| 1300 | identity of the tempreg is returned. */ |
| 1301 | |
| 1302 | static IRTemp disAMode_copy2tmp ( IRExpr* addr32 ) |
| 1303 | { |
| 1304 | IRTemp tmp = newTemp(Ity_I32); |
| 1305 | assign( tmp, addr32 ); |
| 1306 | return tmp; |
| 1307 | } |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 1308 | |
| 1309 | static |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1310 | IRTemp disAMode ( Int* len, UChar sorb, UInt delta, UChar* buf ) |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 1311 | { |
| 1312 | UChar mod_reg_rm = getIByte(delta); |
| 1313 | delta++; |
| 1314 | |
| 1315 | /* squeeze out the reg field from mod_reg_rm, since a 256-entry |
| 1316 | jump table seems a bit excessive. |
| 1317 | */ |
| 1318 | mod_reg_rm &= 0xC7; /* is now XX000YYY */ |
| 1319 | mod_reg_rm |= (mod_reg_rm >> 3); /* is now XX0XXYYY */ |
| 1320 | mod_reg_rm &= 0x1F; /* is now 000XXYYY */ |
| 1321 | switch (mod_reg_rm) { |
| 1322 | |
| 1323 | /* (%eax) .. (%edi), not including (%esp) or (%ebp). |
| 1324 | --> GET %reg, t |
| 1325 | */ |
| 1326 | case 0x00: case 0x01: case 0x02: case 0x03: |
| 1327 | /* ! 04 */ /* ! 05 */ case 0x06: case 0x07: |
| 1328 | { UChar rm = mod_reg_rm; |
| 1329 | DIS(buf, "%s(%s)", sorbTxt(sorb), nameIReg(4,rm)); |
| 1330 | *len = 1; |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1331 | return disAMode_copy2tmp( |
| 1332 | handleSegOverride(sorb, getIReg(4,rm))); |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 1333 | } |
| 1334 | |
| 1335 | /* d8(%eax) ... d8(%edi), not including d8(%esp) |
| 1336 | --> GET %reg, t ; ADDL d8, t |
| 1337 | */ |
| 1338 | case 0x08: case 0x09: case 0x0A: case 0x0B: |
| 1339 | /* ! 0C */ case 0x0D: case 0x0E: case 0x0F: |
| 1340 | { UChar rm = mod_reg_rm & 7; |
| 1341 | UInt d = getSDisp8(delta); |
| 1342 | DIS(buf, "%s%d(%s)", sorbTxt(sorb), d, nameIReg(4,rm)); |
| 1343 | *len = 2; |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1344 | return disAMode_copy2tmp( |
| 1345 | handleSegOverride(sorb, |
| 1346 | binop(Iop_Add32,getIReg(4,rm),mkU32(d)))); |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 1347 | } |
| 1348 | |
| 1349 | /* d32(%eax) ... d32(%edi), not including d32(%esp) |
| 1350 | --> GET %reg, t ; ADDL d8, t |
| 1351 | */ |
| 1352 | case 0x10: case 0x11: case 0x12: case 0x13: |
| 1353 | /* ! 14 */ case 0x15: case 0x16: case 0x17: |
| 1354 | { UChar rm = mod_reg_rm & 7; |
| 1355 | UInt d = getUDisp32(delta); |
| 1356 | DIS(buf, "%s0x%x(%s)", sorbTxt(sorb), d, nameIReg(4,rm)); |
| 1357 | *len = 5; |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1358 | return disAMode_copy2tmp( |
| 1359 | handleSegOverride(sorb, |
| 1360 | binop(Iop_Add32,getIReg(4,rm),mkU32(d)))); |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 1361 | } |
| 1362 | |
| 1363 | /* a register, %eax .. %edi. This shouldn't happen. */ |
| 1364 | case 0x18: case 0x19: case 0x1A: case 0x1B: |
| 1365 | case 0x1C: case 0x1D: case 0x1E: case 0x1F: |
| 1366 | vpanic("disAMode(x86): not an addr!"); |
| 1367 | |
| 1368 | /* a 32-bit literal address |
| 1369 | --> MOV d32, tmp |
| 1370 | */ |
| 1371 | case 0x05: |
| 1372 | { UInt d = getUDisp32(delta); |
| 1373 | *len = 5; |
| 1374 | DIS(buf, "%s(0x%x)", sorbTxt(sorb), d); |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1375 | return disAMode_copy2tmp( |
| 1376 | handleSegOverride(sorb, mkU32(d))); |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 1377 | } |
| 1378 | |
| 1379 | case 0x04: { |
| 1380 | /* SIB, with no displacement. Special cases: |
| 1381 | -- %esp cannot act as an index value. |
| 1382 | If index_r indicates %esp, zero is used for the index. |
| 1383 | -- when mod is zero and base indicates EBP, base is instead |
| 1384 | a 32-bit literal. |
| 1385 | It's all madness, I tell you. Extract %index, %base and |
| 1386 | scale from the SIB byte. The value denoted is then: |
| 1387 | | %index == %ESP && %base == %EBP |
| 1388 | = d32 following SIB byte |
| 1389 | | %index == %ESP && %base != %EBP |
| 1390 | = %base |
| 1391 | | %index != %ESP && %base == %EBP |
| 1392 | = d32 following SIB byte + (%index << scale) |
| 1393 | | %index != %ESP && %base != %ESP |
| 1394 | = %base + (%index << scale) |
| 1395 | |
| 1396 | What happens to the souls of CPU architects who dream up such |
| 1397 | horrendous schemes, do you suppose? |
| 1398 | */ |
| 1399 | UChar sib = getIByte(delta); |
| 1400 | UChar scale = (sib >> 6) & 3; |
| 1401 | UChar index_r = (sib >> 3) & 7; |
| 1402 | UChar base_r = sib & 7; |
| 1403 | delta++; |
| 1404 | |
| 1405 | if (index_r != R_ESP && base_r != R_EBP) { |
| 1406 | DIS(buf, "%s(%s,%s,%d)", sorbTxt(sorb), |
| 1407 | nameIReg(4,base_r), nameIReg(4,index_r), 1<<scale); |
| 1408 | *len = 2; |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1409 | return |
| 1410 | disAMode_copy2tmp( |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 1411 | handleSegOverride(sorb, |
| 1412 | binop(Iop_Add32, |
| 1413 | getIReg(4,base_r), |
| 1414 | binop(Iop_Shl32, getIReg(4,index_r), |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 1415 | mkU8(scale))))); |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 1416 | } |
| 1417 | |
| 1418 | if (index_r != R_ESP && base_r == R_EBP) { |
| 1419 | UInt d = getUDisp32(delta); |
| 1420 | DIS(buf, "%s0x%x(,%s,%d)", sorbTxt(sorb), d, |
| 1421 | nameIReg(4,index_r), 1<<scale); |
| 1422 | *len = 6; |
| 1423 | return |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1424 | disAMode_copy2tmp( |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 1425 | handleSegOverride(sorb, |
| 1426 | binop(Iop_Add32, |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 1427 | binop(Iop_Shl32, getIReg(4,index_r), mkU8(scale)), |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1428 | mkU32(d)))); |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 1429 | } |
| 1430 | |
| 1431 | if (index_r == R_ESP && base_r != R_EBP) { |
| 1432 | DIS(buf, "%s(%s,,)", sorbTxt(sorb), nameIReg(4,base_r)); |
| 1433 | *len = 2; |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1434 | return disAMode_copy2tmp( |
| 1435 | handleSegOverride(sorb, getIReg(4,base_r))); |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 1436 | } |
| 1437 | |
| 1438 | if (index_r == R_ESP && base_r == R_EBP) { |
| 1439 | UInt d = getUDisp32(delta); |
| 1440 | DIS(buf, "%s0x%x()", sorbTxt(sorb), d); |
| 1441 | *len = 6; |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 1442 | vpanic("amode 8"); |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1443 | return disAMode_copy2tmp( |
| 1444 | handleSegOverride(sorb, mkU32(d))); |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 1445 | } |
| 1446 | |
| 1447 | vassert(0); |
| 1448 | } |
| 1449 | |
| 1450 | /* SIB, with 8-bit displacement. Special cases: |
| 1451 | -- %esp cannot act as an index value. |
| 1452 | If index_r indicates %esp, zero is used for the index. |
| 1453 | Denoted value is: |
| 1454 | | %index == %ESP |
| 1455 | = d8 + %base |
| 1456 | | %index != %ESP |
| 1457 | = d8 + %base + (%index << scale) |
| 1458 | */ |
| 1459 | case 0x0C: { |
| 1460 | UChar sib = getIByte(delta); |
| 1461 | UChar scale = (sib >> 6) & 3; |
| 1462 | UChar index_r = (sib >> 3) & 7; |
| 1463 | UChar base_r = sib & 7; |
| 1464 | UInt d = getSDisp8(delta+1); |
| 1465 | |
| 1466 | if (index_r == R_ESP) { |
| 1467 | DIS(buf, "%s%d(%s,,)", sorbTxt(sorb), d, nameIReg(4,base_r)); |
| 1468 | *len = 3; |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1469 | return disAMode_copy2tmp( |
| 1470 | handleSegOverride(sorb, |
| 1471 | binop(Iop_Add32, getIReg(4,base_r), mkU32(d)) )); |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 1472 | } else { |
| 1473 | DIS(buf, "%s%d(%s,%s,%d)", sorbTxt(sorb), d, |
| 1474 | nameIReg(4,base_r), nameIReg(4,index_r), 1<<scale); |
| 1475 | *len = 3; |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 1476 | return |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1477 | disAMode_copy2tmp( |
| 1478 | handleSegOverride(sorb, |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 1479 | binop(Iop_Add32, |
| 1480 | binop(Iop_Add32, |
| 1481 | getIReg(4,base_r), |
| 1482 | binop(Iop_Shl32, |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 1483 | getIReg(4,index_r), mkU8(scale))), |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1484 | mkU32(d)))); |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 1485 | } |
| 1486 | vassert(0); |
| 1487 | } |
| 1488 | |
| 1489 | /* SIB, with 32-bit displacement. Special cases: |
| 1490 | -- %esp cannot act as an index value. |
| 1491 | If index_r indicates %esp, zero is used for the index. |
| 1492 | Denoted value is: |
| 1493 | | %index == %ESP |
| 1494 | = d32 + %base |
| 1495 | | %index != %ESP |
| 1496 | = d32 + %base + (%index << scale) |
| 1497 | */ |
| 1498 | case 0x14: { |
| 1499 | UChar sib = getIByte(delta); |
| 1500 | UChar scale = (sib >> 6) & 3; |
| 1501 | UChar index_r = (sib >> 3) & 7; |
| 1502 | UChar base_r = sib & 7; |
| 1503 | UInt d = getUDisp32(delta+1); |
| 1504 | |
| 1505 | if (index_r == R_ESP) { |
| 1506 | DIS(buf, "%s%d(%s,,)", sorbTxt(sorb), d, nameIReg(4,base_r)); |
| 1507 | *len = 6; |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1508 | return disAMode_copy2tmp( |
| 1509 | handleSegOverride(sorb, |
| 1510 | binop(Iop_Add32, getIReg(4,base_r), mkU32(d)) )); |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 1511 | } else { |
| 1512 | DIS(buf, "%s%d(%s,%s,%d)", sorbTxt(sorb), d, |
| 1513 | nameIReg(4,base_r), nameIReg(4,index_r), 1<<scale); |
| 1514 | *len = 6; |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 1515 | return |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1516 | disAMode_copy2tmp( |
| 1517 | handleSegOverride(sorb, |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 1518 | binop(Iop_Add32, |
| 1519 | binop(Iop_Add32, |
| 1520 | getIReg(4,base_r), |
| 1521 | binop(Iop_Shl32, |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 1522 | getIReg(4,index_r), mkU8(scale))), |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1523 | mkU32(d)))); |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 1524 | } |
| 1525 | vassert(0); |
| 1526 | } |
| 1527 | |
| 1528 | default: |
| 1529 | vpanic("disAMode(x86)"); |
| 1530 | return 0; /*notreached*/ |
| 1531 | } |
| 1532 | } |
| 1533 | |
| 1534 | |
| 1535 | /* Figure out the number of (insn-stream) bytes constituting the amode |
| 1536 | beginning at delta. Is useful for getting hold of literals beyond |
| 1537 | the end of the amode before it has been disassembled. */ |
| 1538 | |
| 1539 | static UInt lengthAMode ( UInt delta ) |
| 1540 | { |
| 1541 | UChar mod_reg_rm = getIByte(delta); delta++; |
| 1542 | |
| 1543 | /* squeeze out the reg field from mod_reg_rm, since a 256-entry |
| 1544 | jump table seems a bit excessive. |
| 1545 | */ |
| 1546 | mod_reg_rm &= 0xC7; /* is now XX000YYY */ |
| 1547 | mod_reg_rm |= (mod_reg_rm >> 3); /* is now XX0XXYYY */ |
| 1548 | mod_reg_rm &= 0x1F; /* is now 000XXYYY */ |
| 1549 | switch (mod_reg_rm) { |
| 1550 | |
| 1551 | /* (%eax) .. (%edi), not including (%esp) or (%ebp). */ |
| 1552 | case 0x00: case 0x01: case 0x02: case 0x03: |
| 1553 | /* ! 04 */ /* ! 05 */ case 0x06: case 0x07: |
| 1554 | return 1; |
| 1555 | |
| 1556 | /* d8(%eax) ... d8(%edi), not including d8(%esp). */ |
| 1557 | case 0x08: case 0x09: case 0x0A: case 0x0B: |
| 1558 | /* ! 0C */ case 0x0D: case 0x0E: case 0x0F: |
| 1559 | return 2; |
| 1560 | |
| 1561 | /* d32(%eax) ... d32(%edi), not including d32(%esp). */ |
| 1562 | case 0x10: case 0x11: case 0x12: case 0x13: |
| 1563 | /* ! 14 */ case 0x15: case 0x16: case 0x17: |
| 1564 | return 5; |
| 1565 | |
| 1566 | /* a register, %eax .. %edi. (Not an addr, but still handled.) */ |
| 1567 | case 0x18: case 0x19: case 0x1A: case 0x1B: |
| 1568 | case 0x1C: case 0x1D: case 0x1E: case 0x1F: |
| 1569 | return 1; |
| 1570 | |
| 1571 | /* a 32-bit literal address. */ |
| 1572 | case 0x05: return 5; |
| 1573 | |
| 1574 | /* SIB, no displacement. */ |
| 1575 | case 0x04: { |
| 1576 | UChar sib = getIByte(delta); |
| 1577 | UChar base_r = sib & 7; |
| 1578 | if (base_r == R_EBP) return 6; else return 2; |
| 1579 | } |
| 1580 | /* SIB, with 8-bit displacement. */ |
| 1581 | case 0x0C: return 3; |
| 1582 | |
| 1583 | /* SIB, with 32-bit displacement. */ |
| 1584 | case 0x14: return 6; |
| 1585 | |
| 1586 | default: |
| 1587 | vpanic("lengthAMode"); |
| 1588 | return 0; /*notreached*/ |
| 1589 | } |
| 1590 | } |
| 1591 | |
| 1592 | /*------------------------------------------------------------*/ |
| 1593 | /*--- Disassembling common idioms ---*/ |
| 1594 | /*------------------------------------------------------------*/ |
| 1595 | |
sewardj | 5df3bfe | 2004-07-27 09:30:31 +0000 | [diff] [blame] | 1596 | static |
| 1597 | void codegen_XOR_reg_with_itself ( Int size, Int ge_reg ) |
| 1598 | { |
| 1599 | IRType ty = szToITy(size); |
| 1600 | /* reg := 0 */ |
| 1601 | putIReg(size, ge_reg, mkU(ty,0)); |
| 1602 | /* Flags: C,A,O=0, Z=1, S=0, P=1 */ |
| 1603 | stmt( IRStmt_Put( OFFB_CC_OP, mkU32(CC_OP_COPY) )); |
| 1604 | stmt( IRStmt_Put( OFFB_CC_SRC, mkU32(CC_MASK_Z|CC_MASK_P) )); |
| 1605 | stmt( IRStmt_Put( OFFB_CC_DST, mkU32(0) )); |
| 1606 | DIP("xor%c %s, %s\n", nameISize(size), |
| 1607 | nameIReg(size,ge_reg), nameIReg(size,ge_reg) ); |
| 1608 | } |
| 1609 | |
| 1610 | |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1611 | /* Handle binary integer instructions of the form |
| 1612 | op E, G meaning |
| 1613 | op reg-or-mem, reg |
| 1614 | Is passed the a ptr to the modRM byte, the actual operation, and the |
| 1615 | data size. Returns the address advanced completely over this |
| 1616 | instruction. |
| 1617 | |
| 1618 | E(src) is reg-or-mem |
| 1619 | G(dst) is reg. |
| 1620 | |
| 1621 | If E is reg, --> GET %G, tmp |
| 1622 | OP %E, tmp |
| 1623 | PUT tmp, %G |
| 1624 | |
| 1625 | If E is mem and OP is not reversible, |
| 1626 | --> (getAddr E) -> tmpa |
| 1627 | LD (tmpa), tmpa |
| 1628 | GET %G, tmp2 |
| 1629 | OP tmpa, tmp2 |
| 1630 | PUT tmp2, %G |
| 1631 | |
| 1632 | If E is mem and OP is reversible |
| 1633 | --> (getAddr E) -> tmpa |
| 1634 | LD (tmpa), tmpa |
| 1635 | OP %G, tmpa |
| 1636 | PUT tmpa, %G |
| 1637 | */ |
| 1638 | static |
| 1639 | UInt dis_op2_E_G ( UChar sorb, |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 1640 | Bool addSubCarry, |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1641 | IROp op8, |
| 1642 | Bool keep, |
| 1643 | Int size, |
| 1644 | UInt delta0, |
| 1645 | Char* t_x86opc ) |
| 1646 | { |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 1647 | UChar dis_buf[50]; |
| 1648 | Int len; |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1649 | IRType ty = szToITy(size); |
| 1650 | IRTemp dst1 = newTemp(ty); |
| 1651 | IRTemp src = newTemp(ty); |
| 1652 | IRTemp dst0 = newTemp(ty); |
| 1653 | UChar rm = getUChar(delta0); |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1654 | IRTemp addr = INVALID_IRTEMP; |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1655 | |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 1656 | /* addSubCarry == True indicates the intended operation is |
| 1657 | add-with-carry or subtract-with-borrow. */ |
| 1658 | if (addSubCarry) { |
| 1659 | vassert(op8 == Iop_Add8 || op8 == Iop_Sub8); |
| 1660 | vassert(keep); |
| 1661 | } |
| 1662 | |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1663 | if (epartIsReg(rm)) { |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1664 | /* Specially handle XOR reg,reg, because that doesn't really |
| 1665 | depend on reg, and doing the obvious thing potentially |
| 1666 | generates a spurious value check failure due to the bogus |
| 1667 | dependency. */ |
sewardj | 5df3bfe | 2004-07-27 09:30:31 +0000 | [diff] [blame] | 1668 | if (op8 == Iop_Xor8 && gregOfRM(rm) == eregOfRM(rm)) { |
| 1669 | codegen_XOR_reg_with_itself ( size, gregOfRM(rm) ); |
| 1670 | return 1+delta0; |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1671 | } |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1672 | assign( dst0, getIReg(size,gregOfRM(rm)) ); |
| 1673 | assign( src, getIReg(size,eregOfRM(rm)) ); |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1674 | |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 1675 | if (addSubCarry && op8 == Iop_Add8) { |
| 1676 | vassert(0); |
| 1677 | helper_ADC( size, dst1, dst0, src ); |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1678 | putIReg(size, gregOfRM(rm), mkexpr(dst1)); |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 1679 | } else |
| 1680 | if (addSubCarry && op8 == Iop_Sub8) { |
| 1681 | vassert(0); |
| 1682 | helper_SBB( size, dst1, dst0, src ); |
| 1683 | putIReg(size, gregOfRM(rm), mkexpr(dst1)); |
| 1684 | } else { |
| 1685 | assign( dst1, binop(mkSizedOp(ty,op8), mkexpr(dst0), mkexpr(src)) ); |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 1686 | if (isAddSub(op8)) |
| 1687 | setFlags_ADD_SUB(op8, src, dst0, ty); |
| 1688 | else |
| 1689 | setFlags_LOGIC(op8, dst1, ty); |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 1690 | if (keep) |
| 1691 | putIReg(size, gregOfRM(rm), mkexpr(dst1)); |
| 1692 | } |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1693 | |
| 1694 | DIP("%s%c %s,%s\n", t_x86opc, nameISize(size), |
| 1695 | nameIReg(size,eregOfRM(rm)), |
| 1696 | nameIReg(size,gregOfRM(rm))); |
| 1697 | return 1+delta0; |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1698 | } else { |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 1699 | /* E refers to memory */ |
| 1700 | addr = disAMode ( &len, sorb, delta0, dis_buf); |
| 1701 | assign( dst0, getIReg(size,gregOfRM(rm)) ); |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1702 | assign( src, loadLE(szToITy(size), mkexpr(addr)) ); |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 1703 | |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 1704 | if (addSubCarry && op8 == Iop_Add8) { |
| 1705 | vassert(0); |
| 1706 | helper_ADC( size, dst1, dst0, src ); |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 1707 | putIReg(size, gregOfRM(rm), mkexpr(dst1)); |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 1708 | } else |
| 1709 | if (addSubCarry && op8 == Iop_Sub8) { |
| 1710 | helper_SBB( size, dst1, dst0, src ); |
| 1711 | putIReg(size, gregOfRM(rm), mkexpr(dst1)); |
| 1712 | } else { |
| 1713 | assign( dst1, binop(mkSizedOp(ty,op8), mkexpr(dst0), mkexpr(src)) ); |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 1714 | if (isAddSub(op8)) |
| 1715 | setFlags_ADD_SUB(op8, src, dst0, ty); |
| 1716 | else |
| 1717 | setFlags_LOGIC(op8, dst1, ty); |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 1718 | if (keep) |
| 1719 | putIReg(size, gregOfRM(rm), mkexpr(dst1)); |
| 1720 | } |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 1721 | |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1722 | DIP("%s%c %s,%s\n", t_x86opc, nameISize(size), |
| 1723 | dis_buf,nameIReg(size,gregOfRM(rm))); |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 1724 | return len+delta0; |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1725 | } |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1726 | } |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 1727 | |
| 1728 | |
| 1729 | |
| 1730 | /* Handle binary integer instructions of the form |
| 1731 | op G, E meaning |
| 1732 | op reg, reg-or-mem |
| 1733 | Is passed the a ptr to the modRM byte, the actual operation, and the |
| 1734 | data size. Returns the address advanced completely over this |
| 1735 | instruction. |
| 1736 | |
| 1737 | G(src) is reg. |
| 1738 | E(dst) is reg-or-mem |
| 1739 | |
| 1740 | If E is reg, --> GET %E, tmp |
| 1741 | OP %G, tmp |
| 1742 | PUT tmp, %E |
| 1743 | |
| 1744 | If E is mem, --> (getAddr E) -> tmpa |
| 1745 | LD (tmpa), tmpv |
| 1746 | OP %G, tmpv |
| 1747 | ST tmpv, (tmpa) |
| 1748 | */ |
| 1749 | static |
| 1750 | UInt dis_op2_G_E ( UChar sorb, |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 1751 | Bool addSubCarry, |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 1752 | IROp op8, |
| 1753 | Bool keep, |
| 1754 | Int size, |
| 1755 | UInt delta0, |
| 1756 | Char* t_x86opc ) |
| 1757 | { |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1758 | UChar dis_buf[50]; |
| 1759 | Int len; |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 1760 | IRType ty = szToITy(size); |
| 1761 | IRTemp dst1 = newTemp(ty); |
| 1762 | IRTemp src = newTemp(ty); |
| 1763 | IRTemp dst0 = newTemp(ty); |
| 1764 | UChar rm = getIByte(delta0); |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1765 | IRTemp addr = INVALID_IRTEMP; |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 1766 | |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 1767 | /* addSubCarry == True indicates the intended operation is |
| 1768 | add-with-carry or subtract-with-borrow. */ |
| 1769 | if (addSubCarry) { |
| 1770 | vassert(op8 == Iop_Add8 || op8 == Iop_Sub8); |
| 1771 | vassert(keep); |
| 1772 | } |
| 1773 | |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 1774 | if (epartIsReg(rm)) { |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 1775 | /* Specially handle XOR reg,reg, because that doesn't really |
| 1776 | depend on reg, and doing the obvious thing potentially |
| 1777 | generates a spurious value check failure due to the bogus |
| 1778 | dependency. */ |
sewardj | 5df3bfe | 2004-07-27 09:30:31 +0000 | [diff] [blame] | 1779 | if (op8 == Iop_Xor8 && gregOfRM(rm) == eregOfRM(rm)) { |
| 1780 | codegen_XOR_reg_with_itself ( size, gregOfRM(rm) ); |
| 1781 | return 1+delta0; |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 1782 | } |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 1783 | assign(dst0, getIReg(size,eregOfRM(rm))); |
| 1784 | assign(src, getIReg(size,gregOfRM(rm))); |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 1785 | |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 1786 | if (addSubCarry && op8 == Iop_Add8) { |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 1787 | helper_ADC( size, dst1, dst0, src ); |
| 1788 | putIReg(size, eregOfRM(rm), mkexpr(dst1)); |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 1789 | } else |
| 1790 | if (addSubCarry && op8 == Iop_Sub8) { |
| 1791 | helper_SBB( size, dst1, dst0, src ); |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 1792 | putIReg(size, eregOfRM(rm), mkexpr(dst1)); |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 1793 | } else { |
| 1794 | assign(dst1, binop(mkSizedOp(ty,op8), mkexpr(dst0), mkexpr(src))); |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 1795 | if (isAddSub(op8)) |
| 1796 | setFlags_ADD_SUB(op8, src, dst0, ty); |
| 1797 | else |
| 1798 | setFlags_LOGIC(op8, dst1, ty); |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 1799 | if (keep) |
| 1800 | putIReg(size, eregOfRM(rm), mkexpr(dst1)); |
| 1801 | } |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 1802 | |
| 1803 | DIP("%s%c %s,%s\n", t_x86opc, nameISize(size), |
| 1804 | nameIReg(size,gregOfRM(rm)), |
| 1805 | nameIReg(size,eregOfRM(rm))); |
| 1806 | return 1+delta0; |
| 1807 | } |
| 1808 | |
| 1809 | /* E refers to memory */ |
| 1810 | { |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1811 | addr = disAMode ( &len, sorb, delta0, dis_buf); |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1812 | assign(dst0, loadLE(ty,mkexpr(addr))); |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1813 | assign(src, getIReg(size,gregOfRM(rm))); |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 1814 | |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 1815 | if (addSubCarry && op8 == Iop_Add8) { |
| 1816 | helper_ADC( size, dst1, dst0, src ); |
| 1817 | storeLE(mkexpr(addr), mkexpr(dst1)); |
| 1818 | } else |
| 1819 | if (addSubCarry && op8 == Iop_Sub8) { |
| 1820 | helper_SBB( size, dst1, dst0, src ); |
| 1821 | storeLE(mkexpr(addr), mkexpr(dst1)); |
| 1822 | } else { |
| 1823 | assign(dst1, binop(mkSizedOp(ty,op8), mkexpr(dst0), mkexpr(src))); |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 1824 | if (isAddSub(op8)) |
| 1825 | setFlags_ADD_SUB(op8, src, dst0, ty); |
| 1826 | else |
| 1827 | setFlags_LOGIC(op8, dst1, ty); |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 1828 | if (keep) |
| 1829 | storeLE(mkexpr(addr), mkexpr(dst1)); |
| 1830 | } |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1831 | |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 1832 | DIP("%s%c %s,%s\n", t_x86opc, nameISize(size), |
| 1833 | nameIReg(size,gregOfRM(rm)), dis_buf); |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 1834 | return len+delta0; |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 1835 | } |
| 1836 | } |
| 1837 | |
| 1838 | |
| 1839 | /* Handle move instructions of the form |
| 1840 | mov E, G meaning |
| 1841 | mov reg-or-mem, reg |
| 1842 | Is passed the a ptr to the modRM byte, and the data size. Returns |
| 1843 | the address advanced completely over this instruction. |
| 1844 | |
| 1845 | E(src) is reg-or-mem |
| 1846 | G(dst) is reg. |
| 1847 | |
| 1848 | If E is reg, --> GET %E, tmpv |
| 1849 | PUT tmpv, %G |
| 1850 | |
| 1851 | If E is mem --> (getAddr E) -> tmpa |
| 1852 | LD (tmpa), tmpb |
| 1853 | PUT tmpb, %G |
| 1854 | */ |
| 1855 | static |
| 1856 | UInt dis_mov_E_G ( UChar sorb, |
| 1857 | Int size, |
| 1858 | UInt delta0 ) |
| 1859 | { |
| 1860 | Int len; |
| 1861 | UChar rm = getIByte(delta0); |
| 1862 | UChar dis_buf[50]; |
| 1863 | |
| 1864 | if (epartIsReg(rm)) { |
| 1865 | #if 0 |
| 1866 | Int tmpv = newTemp(cb); |
| 1867 | uInstr2(cb, GET, size, ArchReg, eregOfRM(rm), TempReg, tmpv); |
| 1868 | uInstr2(cb, PUT, size, TempReg, tmpv, ArchReg, gregOfRM(rm)); |
| 1869 | DIP("mov%c %s,%s\n", nameISize(size), |
| 1870 | nameIReg(size,eregOfRM(rm)), |
| 1871 | nameIReg(size,gregOfRM(rm))); |
| 1872 | return 1+eip0; |
| 1873 | #endif |
| 1874 | vassert(121221==0); |
| 1875 | } |
| 1876 | |
| 1877 | /* E refers to memory */ |
| 1878 | { |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1879 | IRTemp addr = disAMode ( &len, sorb, delta0, dis_buf ); |
| 1880 | putIReg(size, gregOfRM(rm), loadLE(szToITy(size), mkexpr(addr))); |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 1881 | DIP("mov%c %s,%s\n", nameISize(size), |
| 1882 | dis_buf,nameIReg(size,gregOfRM(rm))); |
| 1883 | return delta0+len; |
| 1884 | } |
| 1885 | } |
| 1886 | |
| 1887 | |
| 1888 | /* Handle move instructions of the form |
| 1889 | mov G, E meaning |
| 1890 | mov reg, reg-or-mem |
| 1891 | Is passed the a ptr to the modRM byte, and the data size. Returns |
| 1892 | the address advanced completely over this instruction. |
| 1893 | |
| 1894 | G(src) is reg. |
| 1895 | E(dst) is reg-or-mem |
| 1896 | |
| 1897 | If E is reg, --> GET %G, tmp |
| 1898 | PUT tmp, %E |
| 1899 | |
| 1900 | If E is mem, --> (getAddr E) -> tmpa |
| 1901 | GET %G, tmpv |
| 1902 | ST tmpv, (tmpa) |
| 1903 | */ |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 1904 | static |
| 1905 | UInt dis_mov_G_E ( UChar sorb, |
| 1906 | Int size, |
| 1907 | UInt delta0 ) |
| 1908 | { |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 1909 | Int len; |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 1910 | UChar rm = getIByte(delta0); |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 1911 | UChar dis_buf[50]; |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 1912 | |
| 1913 | if (epartIsReg(rm)) { |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 1914 | putIReg(size, eregOfRM(rm), getIReg(size, gregOfRM(rm))); |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 1915 | DIP("mov%c %s,%s\n", nameISize(size), |
| 1916 | nameIReg(size,gregOfRM(rm)), |
| 1917 | nameIReg(size,eregOfRM(rm))); |
| 1918 | return 1+delta0; |
| 1919 | } |
| 1920 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 1921 | /* E refers to memory */ |
| 1922 | { |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1923 | IRTemp addr = disAMode ( &len, sorb, delta0, dis_buf); |
| 1924 | storeLE( mkexpr(addr), getIReg(size, gregOfRM(rm)) ); |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 1925 | DIP("mov%c %s,%s\n", nameISize(size), |
| 1926 | nameIReg(size,gregOfRM(rm)), dis_buf); |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 1927 | return len+delta0; |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 1928 | } |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 1929 | } |
| 1930 | |
| 1931 | |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 1932 | /* op $immediate, AL/AX/EAX. */ |
| 1933 | static |
| 1934 | UInt dis_op_imm_A ( Int size, |
| 1935 | IROp op8, |
| 1936 | Bool keep, |
| 1937 | UInt delta, |
| 1938 | Char* t_x86opc ) |
| 1939 | { |
| 1940 | IRType ty = szToITy(size); |
| 1941 | IRTemp dst0 = newTemp(ty); |
| 1942 | IRTemp src = newTemp(ty); |
| 1943 | IRTemp dst1 = newTemp(ty); |
| 1944 | UInt lit = getUDisp(size,delta); |
| 1945 | assign(dst0, getIReg(size,R_EAX)); |
| 1946 | assign(src, mkU(ty,lit)); |
| 1947 | assign(dst1, binop(mkSizedOp(ty,op8), mkexpr(dst0), mkexpr(src)) ); |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 1948 | if (isAddSub(op8)) |
| 1949 | setFlags_ADD_SUB(op8, src, dst0, ty); |
| 1950 | else |
| 1951 | setFlags_LOGIC(op8, dst1, ty); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 1952 | |
| 1953 | if (keep) |
| 1954 | putIReg(size, R_EAX, mkexpr(dst1)); |
| 1955 | |
| 1956 | DIP("%s%c $0x%x, %s\n", t_x86opc, nameISize(size), |
| 1957 | lit, nameIReg(size,R_EAX)); |
| 1958 | return delta+size; |
| 1959 | } |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 1960 | |
| 1961 | |
| 1962 | /* Sign- and Zero-extending moves. */ |
| 1963 | static |
| 1964 | UInt dis_movx_E_G ( UChar sorb, |
| 1965 | UInt delta, Int szs, Int szd, Bool sign_extend ) |
| 1966 | { |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 1967 | UChar rm = getIByte(delta); |
| 1968 | if (epartIsReg(rm)) { |
| 1969 | putIReg(szd, gregOfRM(rm), |
| 1970 | unop(mkWidenOp(szs,szd,False), |
| 1971 | getIReg(szs,eregOfRM(rm)))); |
| 1972 | DIP("mov%c%c%c %s,%s\n", sign_extend ? 's' : 'z', |
| 1973 | nameISize(szs), nameISize(szd), |
| 1974 | nameIReg(szs,eregOfRM(rm)), |
| 1975 | nameIReg(szd,gregOfRM(rm))); |
| 1976 | return 1+delta; |
| 1977 | } |
| 1978 | |
| 1979 | /* E refers to memory */ |
| 1980 | { |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1981 | Int len; |
| 1982 | UChar dis_buf[50]; |
| 1983 | IRTemp addr = disAMode ( &len, sorb, delta, dis_buf ); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 1984 | |
| 1985 | putIReg(szd, gregOfRM(rm), |
| 1986 | unop(mkWidenOp(szs,szd,False), |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 1987 | loadLE(szToITy(szs),mkexpr(addr)))); |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 1988 | DIP("mov%c%c%c %s,%s\n", sign_extend ? 's' : 'z', |
| 1989 | nameISize(szs), nameISize(szd), |
| 1990 | dis_buf, nameIReg(szd,gregOfRM(rm))); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 1991 | return len+delta; |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 1992 | } |
| 1993 | } |
| 1994 | |
sewardj | 9690d92 | 2004-07-14 01:39:17 +0000 | [diff] [blame] | 1995 | |
| 1996 | /* Generate code to divide ArchRegs EDX:EAX / DX:AX / AX by the 32 / |
| 1997 | 16 / 8 bit quantity in the given IRTemp. */ |
| 1998 | static |
| 1999 | void codegen_div ( Int sz, IRTemp t, Bool signed_divide ) |
| 2000 | { |
| 2001 | switch (sz) { |
| 2002 | case 4: { |
| 2003 | IROp op = signed_divide ? Iop_DivModS64to32 : Iop_DivModU64to32; |
| 2004 | IRTemp src64 = newTemp(Ity_I64); |
| 2005 | IRTemp dst64 = newTemp(Ity_I64); |
| 2006 | assign( src64, binop(Iop_32HLto64, |
| 2007 | getIReg(4,R_EDX), getIReg(4,R_EAX)) ); |
| 2008 | assign( dst64, binop(op, mkexpr(src64), mkexpr(t)) ); |
sewardj | 8c7f1ab | 2004-07-29 20:31:09 +0000 | [diff] [blame] | 2009 | putIReg( 4, R_EAX, unop(Iop_64to32,mkexpr(dst64)) ); |
sewardj | 9690d92 | 2004-07-14 01:39:17 +0000 | [diff] [blame] | 2010 | putIReg( 4, R_EDX, unop(Iop_64HIto32,mkexpr(dst64)) ); |
| 2011 | break; |
| 2012 | } |
| 2013 | default: vpanic("codegen_div(x86)"); |
| 2014 | } |
| 2015 | } |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 2016 | //-- Int helper; |
| 2017 | //-- Int ta = newTemp(cb); |
| 2018 | //-- Int td = newTemp(cb); |
| 2019 | //-- |
| 2020 | //-- switch (sz) { |
| 2021 | //-- case 4: helper = (signed_divide ? VGOFF_(helper_idiv_64_32) |
| 2022 | //-- : VGOFF_(helper_div_64_32)); |
| 2023 | //-- break; |
| 2024 | //-- case 2: helper = (signed_divide ? VGOFF_(helper_idiv_32_16) |
| 2025 | //-- : VGOFF_(helper_div_32_16)); |
| 2026 | //-- break; |
| 2027 | //-- case 1: helper = (signed_divide ? VGOFF_(helper_idiv_16_8) |
| 2028 | //-- : VGOFF_(helper_div_16_8)); |
| 2029 | //-- break; |
| 2030 | //-- default: VG_(core_panic)("codegen_div"); |
| 2031 | //-- } |
| 2032 | //-- uInstr0(cb, CALLM_S, 0); |
| 2033 | //-- if (sz == 4 || sz == 2) { |
| 2034 | //-- uInstr1(cb, PUSH, sz, TempReg, t); |
| 2035 | //-- uInstr2(cb, GET, sz, ArchReg, R_EAX, TempReg, ta); |
| 2036 | //-- uInstr1(cb, PUSH, sz, TempReg, ta); |
| 2037 | //-- uInstr2(cb, GET, sz, ArchReg, R_EDX, TempReg, td); |
| 2038 | //-- uInstr1(cb, PUSH, sz, TempReg, td); |
| 2039 | //-- uInstr1(cb, CALLM, 0, Lit16, helper); |
| 2040 | //-- uFlagsRWU(cb, FlagsEmpty, FlagsEmpty, FlagsOSZACP); |
| 2041 | //-- uInstr1(cb, POP, sz, TempReg, t); |
| 2042 | //-- uInstr2(cb, PUT, sz, TempReg, t, ArchReg, R_EDX); |
| 2043 | //-- uInstr1(cb, POP, sz, TempReg, t); |
| 2044 | //-- uInstr2(cb, PUT, sz, TempReg, t, ArchReg, R_EAX); |
| 2045 | //-- uInstr1(cb, CLEAR, 0, Lit16, 4); |
| 2046 | //-- } else { |
| 2047 | //-- uInstr1(cb, PUSH, 1, TempReg, t); |
| 2048 | //-- uInstr2(cb, GET, 2, ArchReg, R_EAX, TempReg, ta); |
| 2049 | //-- uInstr1(cb, PUSH, 2, TempReg, ta); |
| 2050 | //-- uInstr2(cb, MOV, 1, Literal, 0, TempReg, td); |
| 2051 | //-- uLiteral(cb, 0); |
| 2052 | //-- uInstr1(cb, PUSH, 1, TempReg, td); |
| 2053 | //-- uInstr1(cb, CALLM, 0, Lit16, helper); |
| 2054 | //-- uFlagsRWU(cb, FlagsEmpty, FlagsEmpty, FlagsOSZACP); |
| 2055 | //-- uInstr1(cb, POP, 1, TempReg, t); |
| 2056 | //-- uInstr2(cb, PUT, 1, TempReg, t, ArchReg, R_AL); |
| 2057 | //-- uInstr1(cb, POP, 1, TempReg, t); |
| 2058 | //-- uInstr2(cb, PUT, 1, TempReg, t, ArchReg, R_AH); |
| 2059 | //-- uInstr1(cb, CLEAR, 0, Lit16, 4); |
| 2060 | //-- } |
| 2061 | //-- uInstr0(cb, CALLM_E, 0); |
| 2062 | //-- } |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 2063 | |
| 2064 | |
| 2065 | static |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 2066 | UInt dis_Grp1 ( UChar sorb, |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 2067 | UInt delta, UChar modrm, |
| 2068 | Int am_sz, Int d_sz, Int sz, UInt d32 ) |
| 2069 | { |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 2070 | Int len; |
| 2071 | UChar dis_buf[50]; |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 2072 | IRType ty = szToITy(sz); |
| 2073 | IRTemp dst1 = newTemp(ty); |
| 2074 | IRTemp src = newTemp(ty); |
| 2075 | IRTemp dst0 = newTemp(ty); |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 2076 | IRTemp addr = INVALID_IRTEMP; |
sewardj | 66de227 | 2004-07-16 21:19:05 +0000 | [diff] [blame] | 2077 | IROp op8 = Iop_INVALID; |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 2078 | UInt mask = sz==1 ? 0xFF : (sz==2 ? 0xFFFF : 0xFFFFFFFF); |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 2079 | |
| 2080 | switch (gregOfRM(modrm)) { |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 2081 | case 0: op8 = Iop_Add8; break; case 1: op8 = Iop_Or8; break; |
sewardj | 66de227 | 2004-07-16 21:19:05 +0000 | [diff] [blame] | 2082 | case 2: break; // ADC |
| 2083 | case 3: break; // SBB |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 2084 | case 4: op8 = Iop_And8; break; case 5: op8 = Iop_Sub8; break; |
| 2085 | case 6: op8 = Iop_Xor8; break; case 7: op8 = Iop_Sub8; break; |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 2086 | default: vpanic("dis_Grp1: unhandled case"); |
| 2087 | } |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 2088 | |
| 2089 | if (epartIsReg(modrm)) { |
| 2090 | vassert(am_sz == 1); |
| 2091 | |
| 2092 | assign(dst0, getIReg(sz,eregOfRM(modrm))); |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 2093 | assign(src, mkU(ty,d32 & mask)); |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 2094 | |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 2095 | if (gregOfRM(modrm) == 2 /* ADC */) { |
| 2096 | helper_ADC( sz, dst1, dst0, src ); |
| 2097 | } else |
| 2098 | if (gregOfRM(modrm) == 3 /* SBB */) { |
| 2099 | helper_SBB( sz, dst1, dst0, src ); |
| 2100 | } else { |
| 2101 | assign(dst1, binop(mkSizedOp(ty,op8), mkexpr(dst0), mkexpr(src))); |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 2102 | if (isAddSub(op8)) |
| 2103 | setFlags_ADD_SUB(op8, src, dst0, ty); |
| 2104 | else |
| 2105 | setFlags_LOGIC(op8, dst1, ty); |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 2106 | } |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 2107 | |
| 2108 | if (gregOfRM(modrm) < 7) |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 2109 | putIReg(sz, eregOfRM(modrm), mkexpr(dst1)); |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 2110 | |
| 2111 | delta += (am_sz + d_sz); |
| 2112 | DIP("%s%c $0x%x, %s\n", nameGrp1(gregOfRM(modrm)), nameISize(sz), d32, |
| 2113 | nameIReg(sz,eregOfRM(modrm))); |
| 2114 | } else { |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 2115 | addr = disAMode ( &len, sorb, delta, dis_buf); |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 2116 | |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 2117 | assign(dst0, loadLE(ty,mkexpr(addr))); |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 2118 | assign(src, mkU(ty,d32 & mask)); |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 2119 | |
sewardj | 66de227 | 2004-07-16 21:19:05 +0000 | [diff] [blame] | 2120 | if (gregOfRM(modrm) == 2 /* ADC */) { |
sewardj | 3af115f | 2004-07-14 02:46:52 +0000 | [diff] [blame] | 2121 | helper_ADC( sz, dst1, dst0, src ); |
| 2122 | } else |
sewardj | 66de227 | 2004-07-16 21:19:05 +0000 | [diff] [blame] | 2123 | if (gregOfRM(modrm) == 3 /* SBB */) { |
sewardj | 3af115f | 2004-07-14 02:46:52 +0000 | [diff] [blame] | 2124 | vassert(0); |
| 2125 | } else { |
| 2126 | assign(dst1, binop(mkSizedOp(ty,op8), mkexpr(dst0), mkexpr(src))); |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 2127 | if (isAddSub(op8)) |
| 2128 | setFlags_ADD_SUB(op8, src, dst0, ty); |
| 2129 | else |
| 2130 | setFlags_LOGIC(op8, dst1, ty); |
sewardj | 3af115f | 2004-07-14 02:46:52 +0000 | [diff] [blame] | 2131 | } |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 2132 | |
| 2133 | if (gregOfRM(modrm) < 7) |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 2134 | storeLE(mkexpr(addr), mkexpr(dst1)); |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 2135 | |
| 2136 | delta += (len+d_sz); |
| 2137 | DIP("%s%c $0x%x, %s\n", nameGrp1(gregOfRM(modrm)), nameISize(sz), |
| 2138 | d32, dis_buf); |
| 2139 | } |
| 2140 | return delta; |
| 2141 | } |
| 2142 | |
| 2143 | |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 2144 | /* Group 2 extended opcodes. shift_expr must be an 8-bit typed |
| 2145 | expression. */ |
| 2146 | |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 2147 | static |
| 2148 | UInt dis_Grp2 ( UChar sorb, |
| 2149 | UInt delta, UChar modrm, |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 2150 | Int am_sz, Int d_sz, Int sz, IRExpr* shift_expr, |
| 2151 | Char* shift_expr_txt ) |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 2152 | { |
| 2153 | /* delta on entry points at the modrm byte. */ |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 2154 | UChar dis_buf[50]; |
| 2155 | Int len; |
sewardj | 750f407 | 2004-07-26 22:39:11 +0000 | [diff] [blame] | 2156 | Bool isShift, isRotate; |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 2157 | IRType ty = szToITy(sz); |
| 2158 | IRTemp dst0 = newTemp(ty); |
| 2159 | IRTemp dst1 = newTemp(ty); |
| 2160 | IRTemp addr = INVALID_IRTEMP; |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 2161 | |
| 2162 | vassert(sz == 1 || sz == 2 || sz == 4); |
| 2163 | |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 2164 | /* Put value to shift/rotate in dst0. */ |
| 2165 | if (epartIsReg(modrm)) { |
| 2166 | assign(dst0, getIReg(sz, eregOfRM(modrm))); |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 2167 | delta += (am_sz + d_sz); |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 2168 | } else { |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 2169 | addr = disAMode ( &len, sorb, delta, dis_buf); |
| 2170 | assign(dst0, loadLE(ty,mkexpr(addr))); |
| 2171 | delta += len + d_sz; |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 2172 | } |
| 2173 | |
| 2174 | isShift = False; |
| 2175 | switch (gregOfRM(modrm)) { case 4: case 5: case 7: isShift = True; } |
| 2176 | |
sewardj | 750f407 | 2004-07-26 22:39:11 +0000 | [diff] [blame] | 2177 | isRotate = False; |
| 2178 | switch (gregOfRM(modrm)) { case 0: case 1: isRotate = True; } |
| 2179 | |
sewardj | 8c7f1ab | 2004-07-29 20:31:09 +0000 | [diff] [blame] | 2180 | if (!isShift && !isRotate) { |
| 2181 | vex_printf("\ncase %d\n", gregOfRM(modrm)); |
| 2182 | vpanic("dis_Grp2(Reg): unhandled case(x86)"); |
| 2183 | } |
| 2184 | |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 2185 | if (isShift) { |
| 2186 | |
sewardj | c22a6fd | 2004-07-29 23:41:47 +0000 | [diff] [blame] | 2187 | IRTemp pre32 = newTemp(Ity_I32); |
| 2188 | IRTemp res32 = newTemp(Ity_I32); |
| 2189 | IRTemp res32ss = newTemp(Ity_I32); |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 2190 | IRTemp shift_amt = newTemp(Ity_I8); |
sewardj | c22a6fd | 2004-07-29 23:41:47 +0000 | [diff] [blame] | 2191 | IROp op32; |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 2192 | |
| 2193 | switch (gregOfRM(modrm)) { |
sewardj | c22a6fd | 2004-07-29 23:41:47 +0000 | [diff] [blame] | 2194 | case 4: op32 = Iop_Shl32; break; |
| 2195 | case 5: op32 = Iop_Shr32; break; |
| 2196 | case 7: op32 = Iop_Sar32; break; |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 2197 | default: vpanic("dis_Grp2:shift"); break; |
| 2198 | } |
| 2199 | |
sewardj | c22a6fd | 2004-07-29 23:41:47 +0000 | [diff] [blame] | 2200 | /* Widen the value to be shifted to 32 bits, do the shift, and |
| 2201 | narrow back down. This seems surprisingly long-winded, but |
| 2202 | unfortunately the Intel semantics requires that 8/16-bit |
| 2203 | shifts give defined results for shift values all the way up |
| 2204 | to 31, and this seems the simplest way to do it. It has the |
| 2205 | advantage that the only IR level shifts generated are of 32 |
| 2206 | bit values, and the shift amount is guaranteed to be in the |
| 2207 | range 0 .. 31, thereby observing the IR semantics requiring |
| 2208 | all shift values to be in the range 0 .. 2^word_size-1. */ |
| 2209 | |
| 2210 | /* shift_amt = shift_expr & 31, regardless of operation size */ |
| 2211 | assign( shift_amt, binop(Iop_And8, shift_expr, mkU8(31)) ); |
| 2212 | |
| 2213 | /* suitably widen the value to be shifted to 32 bits. */ |
| 2214 | assign( pre32, op32==Iop_Sar32 ? widenSto32(mkexpr(dst0)) |
| 2215 | : widenUto32(mkexpr(dst0)) ); |
| 2216 | |
| 2217 | /* res32 = pre32 `shift` shift_amt */ |
| 2218 | assign( res32, binop(op32, mkexpr(pre32), mkexpr(shift_amt)) ); |
| 2219 | |
| 2220 | /* res32ss = pre32 `shift` ((shift_amt - 1) & 31) */ |
| 2221 | assign( res32ss, |
| 2222 | binop(op32, |
| 2223 | mkexpr(pre32), |
| 2224 | binop(Iop_And8, |
| 2225 | binop(Iop_Sub8, |
| 2226 | mkexpr(shift_amt), mkU8(1)), |
| 2227 | mkU8(31))) ); |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 2228 | |
| 2229 | /* Build the flags thunk. */ |
sewardj | c22a6fd | 2004-07-29 23:41:47 +0000 | [diff] [blame] | 2230 | setFlags_DSTus_DST1(op32, res32ss, res32, ty, shift_amt); |
| 2231 | |
| 2232 | /* Narrow the result back down. */ |
| 2233 | assign( dst1, narrowTo(ty, mkexpr(res32)) ); |
sewardj | 750f407 | 2004-07-26 22:39:11 +0000 | [diff] [blame] | 2234 | |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 2235 | } /* if (isShift) */ |
| 2236 | |
| 2237 | else |
sewardj | 750f407 | 2004-07-26 22:39:11 +0000 | [diff] [blame] | 2238 | if (isRotate) { |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 2239 | Int ccOp = ty==Ity_I8 ? 0 : (ty==Ity_I16 ? 1 : 2); |
| 2240 | Bool left = gregOfRM(modrm) == 0; |
| 2241 | IRTemp rot_amt = newTemp(Ity_I8); |
| 2242 | IRTemp oldFlags = newTemp(Ity_I32); |
sewardj | 750f407 | 2004-07-26 22:39:11 +0000 | [diff] [blame] | 2243 | |
| 2244 | /* rot_amt = shift_expr & mask */ |
sewardj | c22a6fd | 2004-07-29 23:41:47 +0000 | [diff] [blame] | 2245 | /* By masking the rotate amount thusly, the IR-level Shl/Shr |
| 2246 | expressions never shift beyond the word size and thus remain |
| 2247 | well defined. */ |
sewardj | 750f407 | 2004-07-26 22:39:11 +0000 | [diff] [blame] | 2248 | assign(rot_amt, binop(Iop_And8, |
| 2249 | shift_expr, mkU8(8*sz-1))); |
| 2250 | |
| 2251 | if (left) { |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 2252 | |
sewardj | 750f407 | 2004-07-26 22:39:11 +0000 | [diff] [blame] | 2253 | /* dst1 = (dst0 << rot_amt) | (dst0 >>u (wordsize-rot_amt)) */ |
| 2254 | assign(dst1, |
| 2255 | binop( mkSizedOp(ty,Iop_Or8), |
| 2256 | binop( mkSizedOp(ty,Iop_Shl8), |
| 2257 | mkexpr(dst0), |
| 2258 | mkexpr(rot_amt) |
| 2259 | ), |
| 2260 | binop( mkSizedOp(ty,Iop_Shr8), |
| 2261 | mkexpr(dst0), |
| 2262 | binop(Iop_Sub8,mkU8(8*sz), mkexpr(rot_amt)) |
| 2263 | ) |
| 2264 | ) |
| 2265 | ); |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 2266 | ccOp += CC_OP_ROLB; |
sewardj | 750f407 | 2004-07-26 22:39:11 +0000 | [diff] [blame] | 2267 | |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 2268 | } else { /* right */ |
sewardj | 750f407 | 2004-07-26 22:39:11 +0000 | [diff] [blame] | 2269 | |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 2270 | /* dst1 = (dst0 >>u rot_amt) | (dst0 << (wordsize-rot_amt)) */ |
| 2271 | assign(dst1, |
| 2272 | binop( mkSizedOp(ty,Iop_Or8), |
| 2273 | binop( mkSizedOp(ty,Iop_Shr8), |
| 2274 | mkexpr(dst0), |
| 2275 | mkexpr(rot_amt) |
| 2276 | ), |
| 2277 | binop( mkSizedOp(ty,Iop_Shl8), |
| 2278 | mkexpr(dst0), |
| 2279 | binop(Iop_Sub8,mkU8(8*sz), mkexpr(rot_amt)) |
sewardj | 750f407 | 2004-07-26 22:39:11 +0000 | [diff] [blame] | 2280 | ) |
| 2281 | ) |
| 2282 | ); |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 2283 | ccOp += CC_OP_RORB; |
sewardj | c22a6fd | 2004-07-29 23:41:47 +0000 | [diff] [blame] | 2284 | |
sewardj | 750f407 | 2004-07-26 22:39:11 +0000 | [diff] [blame] | 2285 | } |
sewardj | c22a6fd | 2004-07-29 23:41:47 +0000 | [diff] [blame] | 2286 | |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 2287 | /* dst1 now holds the rotated value. Build flag thunk. We |
| 2288 | need the resulting value for this, and the previous flags. |
| 2289 | Except don't set it if the rotate count is zero. */ |
| 2290 | |
| 2291 | assign(oldFlags, mk_calculate_eflags_all()); |
| 2292 | |
| 2293 | /* CC_DST is the rotated value. CC_SRC is flags before. */ |
| 2294 | stmt( IRStmt_Put( OFFB_CC_OP, |
| 2295 | IRExpr_Mux0X( mkexpr(rot_amt), |
| 2296 | IRExpr_Get(OFFB_CC_OP,Ity_I32), |
| 2297 | mkU32(ccOp))) ); |
| 2298 | stmt( IRStmt_Put( OFFB_CC_DST, |
| 2299 | IRExpr_Mux0X( mkexpr(rot_amt), |
| 2300 | IRExpr_Get(OFFB_CC_DST,Ity_I32), |
sewardj | c22a6fd | 2004-07-29 23:41:47 +0000 | [diff] [blame] | 2301 | widenUto32(mkexpr(dst1)))) ); |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 2302 | stmt( IRStmt_Put( OFFB_CC_SRC, |
| 2303 | IRExpr_Mux0X( mkexpr(rot_amt), |
| 2304 | IRExpr_Get(OFFB_CC_SRC,Ity_I32), |
| 2305 | mkexpr(oldFlags))) ); |
| 2306 | } /* if (isRotate) */ |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 2307 | |
| 2308 | /* Save result, and finish up. */ |
| 2309 | if (epartIsReg(modrm)) { |
| 2310 | putIReg(sz, eregOfRM(modrm), mkexpr(dst1)); |
| 2311 | if (print_codegen) { |
| 2312 | vex_printf("%s%c ", |
| 2313 | nameGrp2(gregOfRM(modrm)), nameISize(sz) ); |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 2314 | if (shift_expr_txt) |
| 2315 | vex_printf("%s", shift_expr_txt); |
| 2316 | else |
| 2317 | ppIRExpr(shift_expr); |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 2318 | vex_printf(", %s\n", nameIReg(sz,eregOfRM(modrm))); |
| 2319 | } |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 2320 | } else { |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 2321 | storeLE(mkexpr(addr), mkexpr(dst1)); |
| 2322 | if (print_codegen) { |
| 2323 | vex_printf("%s%c ", |
| 2324 | nameGrp2(gregOfRM(modrm)), nameISize(sz) ); |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 2325 | if (shift_expr_txt) |
| 2326 | vex_printf("%s", shift_expr_txt); |
| 2327 | else |
| 2328 | ppIRExpr(shift_expr); |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 2329 | vex_printf(", %s\n", dis_buf); |
| 2330 | } |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 2331 | } |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 2332 | return delta; |
| 2333 | } |
| 2334 | |
| 2335 | |
| 2336 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 2337 | //-- /* Group 8 extended opcodes (but BT/BTS/BTC/BTR only). */ |
| 2338 | //-- static |
| 2339 | //-- Addr dis_Grp8_BT ( UCodeBlock* cb, |
| 2340 | //-- UChar sorb, |
| 2341 | //-- Addr eip, UChar modrm, |
| 2342 | //-- Int am_sz, Int sz, UInt src_val ) |
| 2343 | //-- { |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 2344 | # define MODIFY_t2_AND_SET_CARRY_FLAG \ |
| 2345 | /* t2 is the value to be op'd on. Copy to t_fetched, then \ |
| 2346 | modify t2, if non-BT. */ \ |
| 2347 | uInstr2(cb, MOV, 4, TempReg, t2, TempReg, t_fetched); \ |
| 2348 | uInstr2(cb, MOV, sz, Literal, 0, TempReg, t_mask); \ |
| 2349 | uLiteral(cb, v_mask); \ |
| 2350 | switch (gregOfRM(modrm)) { \ |
| 2351 | case 4: /* BT */ break; \ |
| 2352 | case 5: /* BTS */ \ |
| 2353 | uInstr2(cb, OR, sz, TempReg, t_mask, TempReg, t2); break; \ |
| 2354 | case 6: /* BTR */ \ |
| 2355 | uInstr2(cb, AND, sz, TempReg, t_mask, TempReg, t2); break; \ |
| 2356 | case 7: /* BTC */ \ |
| 2357 | uInstr2(cb, XOR, sz, TempReg, t_mask, TempReg, t2); break; \ |
| 2358 | } \ |
| 2359 | /* Copy relevant bit from t_fetched into carry flag. */ \ |
| 2360 | uInstr2(cb, SHR, sz, Literal, 0, TempReg, t_fetched); \ |
| 2361 | uLiteral(cb, src_val); \ |
| 2362 | uInstr2(cb, MOV, sz, Literal, 0, TempReg, t_mask); \ |
| 2363 | uLiteral(cb, 1); \ |
| 2364 | uInstr2(cb, AND, sz, TempReg, t_mask, TempReg, t_fetched); \ |
| 2365 | uInstr1(cb, NEG, sz, TempReg, t_fetched); \ |
| 2366 | setFlagsFromUOpcode(cb, NEG); |
| 2367 | |
| 2368 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 2369 | //-- /* src_val denotes a d8. |
| 2370 | //-- And eip on entry points at the modrm byte. */ |
| 2371 | //-- Int t1, t2, t_fetched, t_mask; |
| 2372 | //-- UInt pair; |
| 2373 | //-- Char dis_buf[50]; |
| 2374 | //-- UInt v_mask; |
| 2375 | //-- |
| 2376 | //-- /* There is no 1-byte form of this instruction, AFAICS. */ |
| 2377 | //-- vg_assert(sz == 2 || sz == 4); |
| 2378 | //-- |
| 2379 | //-- /* Limit src_val -- the bit offset -- to something within a word. |
| 2380 | //-- The Intel docs say that literal offsets larger than a word are |
| 2381 | //-- masked in this way. */ |
| 2382 | //-- switch (sz) { |
| 2383 | //-- case 2: src_val &= 15; break; |
| 2384 | //-- case 4: src_val &= 31; break; |
| 2385 | //-- default: VG_(core_panic)("dis_Grp8_BT: invalid size"); |
| 2386 | //-- } |
| 2387 | //-- |
| 2388 | //-- /* Invent a mask suitable for the operation. */ |
| 2389 | //-- |
| 2390 | //-- switch (gregOfRM(modrm)) { |
| 2391 | //-- case 4: /* BT */ v_mask = 0; break; |
| 2392 | //-- case 5: /* BTS */ v_mask = 1 << src_val; break; |
| 2393 | //-- case 6: /* BTR */ v_mask = ~(1 << src_val); break; |
| 2394 | //-- case 7: /* BTC */ v_mask = 1 << src_val; break; |
| 2395 | //-- /* If this needs to be extended, probably simplest to make a |
| 2396 | //-- new function to handle the other cases (0 .. 3). The |
| 2397 | //-- Intel docs do however not indicate any use for 0 .. 3, so |
| 2398 | //-- we don't expect this to happen. */ |
| 2399 | //-- default: VG_(core_panic)("dis_Grp8_BT"); |
| 2400 | //-- } |
| 2401 | //-- /* Probably excessively paranoid. */ |
| 2402 | //-- if (sz == 2) |
| 2403 | //-- v_mask &= 0x0000FFFF; |
| 2404 | //-- |
| 2405 | //-- t1 = INVALID_TEMPREG; |
| 2406 | //-- t_fetched = newTemp(cb); |
| 2407 | //-- t_mask = newTemp(cb); |
| 2408 | //-- |
| 2409 | //-- if (epartIsReg(modrm)) { |
| 2410 | //-- vg_assert(am_sz == 1); |
| 2411 | //-- t2 = newTemp(cb); |
| 2412 | //-- |
| 2413 | //-- /* Fetch the value to be tested and modified. */ |
| 2414 | //-- uInstr2(cb, GET, sz, ArchReg, eregOfRM(modrm), TempReg, t2); |
| 2415 | //-- /* Do it! */ |
| 2416 | //-- MODIFY_t2_AND_SET_CARRY_FLAG; |
| 2417 | //-- /* Dump the result back, if non-BT. */ |
| 2418 | //-- if (gregOfRM(modrm) != 4 /* BT */) |
| 2419 | //-- uInstr2(cb, PUT, sz, TempReg, t2, ArchReg, eregOfRM(modrm)); |
| 2420 | //-- |
| 2421 | //-- eip += (am_sz + 1); |
| 2422 | //-- DIP("%s%c $0x%x, %s\n", nameGrp8(gregOfRM(modrm)), nameISize(sz), |
| 2423 | //-- src_val, nameIReg(sz,eregOfRM(modrm))); |
| 2424 | //-- } else { |
| 2425 | //-- pair = disAMode ( cb, sorb, eip, dis_buf); |
| 2426 | //-- t1 = LOW24(pair); |
| 2427 | //-- t2 = newTemp(cb); |
| 2428 | //-- eip += HI8(pair); |
| 2429 | //-- eip += 1; |
| 2430 | //-- |
| 2431 | //-- /* Fetch the value to be tested and modified. */ |
| 2432 | //-- uInstr2(cb, LOAD, sz, TempReg, t1, TempReg, t2); |
| 2433 | //-- /* Do it! */ |
| 2434 | //-- MODIFY_t2_AND_SET_CARRY_FLAG; |
| 2435 | //-- /* Dump the result back, if non-BT. */ |
| 2436 | //-- if (gregOfRM(modrm) != 4 /* BT */) { |
| 2437 | //-- uInstr2(cb, STORE, sz, TempReg, t2, TempReg, t1); |
| 2438 | //-- } |
| 2439 | //-- DIP("%s%c $0x%x, %s\n", nameGrp8(gregOfRM(modrm)), nameISize(sz), |
| 2440 | //-- src_val, dis_buf); |
| 2441 | //-- } |
| 2442 | //-- return eip; |
| 2443 | //-- |
| 2444 | //-- # undef MODIFY_t2_AND_SET_CARRY_FLAG |
| 2445 | //-- } |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 2446 | |
| 2447 | |
| 2448 | |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 2449 | /* Signed/unsigned widening multiply. Generate IR to multiply the |
| 2450 | value in EAX/AX/AL by the given IRTemp, and park the result in |
| 2451 | EDX:EAX/DX:AX/AX. |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 2452 | */ |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 2453 | static void codegen_mulL_A_D ( Int sz, Bool syned, |
| 2454 | IRTemp tmp, Char* tmp_txt ) |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 2455 | { |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 2456 | IRType ty = szToITy(sz); |
| 2457 | IRTemp t1 = newTemp(ty); |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 2458 | |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 2459 | assign( t1, getIReg(sz, R_EAX) ); |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 2460 | |
| 2461 | switch (ty) { |
sewardj | b81f8b3 | 2004-07-30 10:17:50 +0000 | [diff] [blame] | 2462 | case Ity_I32: { |
| 2463 | IRTemp res64 = newTemp(Ity_I64); |
| 2464 | IROp mulOp = syned ? Iop_MullS32 : Iop_MullU32; |
| 2465 | UInt tBaseOp = syned ? CC_OP_SMULB : CC_OP_UMULB; |
| 2466 | setFlags_MUL ( Ity_I32, t1, tmp, tBaseOp ); |
| 2467 | assign( res64, binop(mulOp, mkexpr(t1), mkexpr(tmp)) ); |
| 2468 | putIReg(4, R_EDX, unop(Iop_64HIto32,mkexpr(res64))); |
| 2469 | putIReg(4, R_EAX, unop(Iop_64to32,mkexpr(res64))); |
| 2470 | break; |
| 2471 | } |
| 2472 | case Ity_I16: { |
| 2473 | IRTemp res32 = newTemp(Ity_I32); |
| 2474 | IROp mulOp = syned ? Iop_MullS16 : Iop_MullU16; |
| 2475 | UInt tBaseOp = syned ? CC_OP_SMULB : CC_OP_UMULB; |
| 2476 | setFlags_MUL ( Ity_I16, t1, tmp, tBaseOp ); |
| 2477 | assign( res32, binop(mulOp, mkexpr(t1), mkexpr(tmp)) ); |
| 2478 | putIReg(2, R_EDX, unop(Iop_32HIto16,mkexpr(res32))); |
| 2479 | putIReg(2, R_EAX, unop(Iop_32to16,mkexpr(res32))); |
| 2480 | break; |
| 2481 | } |
| 2482 | case Ity_I8: { |
| 2483 | IRTemp res16 = newTemp(Ity_I16); |
| 2484 | IROp mulOp = syned ? Iop_MullS8 : Iop_MullU8; |
| 2485 | UInt tBaseOp = syned ? CC_OP_SMULB : CC_OP_UMULB; |
| 2486 | setFlags_MUL ( Ity_I8, t1, tmp, tBaseOp ); |
| 2487 | assign( res16, binop(mulOp, mkexpr(t1), mkexpr(tmp)) ); |
| 2488 | putIReg(2, R_EAX, mkexpr(res16)); |
| 2489 | break; |
| 2490 | } |
| 2491 | default: |
| 2492 | vpanic("codegen_mulL_A_D(x86)"); |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 2493 | } |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 2494 | DIP("%s%c %s\n", syned ? "imul" : "mul", nameISize(sz), tmp_txt); |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 2495 | } |
| 2496 | |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 2497 | |
| 2498 | /* Group 3 extended opcodes. */ |
| 2499 | static |
| 2500 | UInt dis_Grp3 ( UChar sorb, Int sz, UInt delta ) |
| 2501 | { |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 2502 | UInt d32; |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 2503 | UChar modrm; |
| 2504 | UChar dis_buf[50]; |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 2505 | Int len; |
| 2506 | IRTemp addr; |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 2507 | IRType ty = szToITy(sz); |
| 2508 | IRTemp t1 = newTemp(ty); |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 2509 | // IRTemp t2 = INVALID_IRTEMP; |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 2510 | IRTemp dst1, src, dst0; |
| 2511 | modrm = getIByte(delta); |
| 2512 | if (epartIsReg(modrm)) { |
| 2513 | switch (gregOfRM(modrm)) { |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 2514 | case 0: { /* TEST */ |
| 2515 | delta++; d32 = getUDisp(sz, delta); delta += sz; |
| 2516 | dst1 = newTemp(ty); |
| 2517 | assign(dst1, binop(mkSizedOp(ty,Iop_And8), |
| 2518 | getIReg(sz,eregOfRM(modrm)), |
| 2519 | mkU(ty,d32))); |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 2520 | setFlags_LOGIC( Iop_And8, dst1, ty ); |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 2521 | DIP("test%c $0x%x, %s\n", nameISize(sz), d32, |
| 2522 | nameIReg(sz, eregOfRM(modrm))); |
| 2523 | break; |
| 2524 | } |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 2525 | case 2: /* NOT */ |
| 2526 | delta++; |
| 2527 | putIReg(sz, eregOfRM(modrm), |
| 2528 | unop(mkSizedOp(ty,Iop_Not8), |
| 2529 | getIReg(sz, eregOfRM(modrm)))); |
| 2530 | DIP("not%c %s\n", nameISize(sz), nameIReg(sz, eregOfRM(modrm))); |
| 2531 | break; |
| 2532 | case 3: /* NEG */ |
| 2533 | delta++; |
| 2534 | dst0 = newTemp(ty); |
| 2535 | src = newTemp(ty); |
| 2536 | dst1 = newTemp(ty); |
sewardj | a511afc | 2004-07-29 22:26:03 +0000 | [diff] [blame] | 2537 | assign(dst0, mkU(ty,0)); |
| 2538 | assign(src, getIReg(sz,eregOfRM(modrm))); |
| 2539 | assign(dst1, binop(mkSizedOp(ty,Iop_Sub8), mkexpr(dst0), mkexpr(src))); |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 2540 | setFlags_ADD_SUB(Iop_Sub8, src, dst0, ty); |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 2541 | putIReg(sz, eregOfRM(modrm), mkexpr(dst1)); |
| 2542 | DIP("neg%c %s\n", nameISize(sz), nameIReg(sz, eregOfRM(modrm))); |
| 2543 | break; |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 2544 | case 4: /* MUL (unsigned widening) */ |
| 2545 | delta++; |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 2546 | src = newTemp(ty); |
| 2547 | assign(src, getIReg(sz,eregOfRM(modrm))); |
| 2548 | codegen_mulL_A_D ( sz, False, src, nameIReg(sz,eregOfRM(modrm)) ); |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 2549 | break; |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 2550 | case 5: /* IMUL (signed widening) */ |
| 2551 | delta++; |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 2552 | src = newTemp(ty); |
| 2553 | assign(src, getIReg(sz,eregOfRM(modrm))); |
| 2554 | codegen_mulL_A_D ( sz, True, src, nameIReg(sz,eregOfRM(modrm)) ); |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 2555 | break; |
sewardj | 6851154 | 2004-07-28 00:15:44 +0000 | [diff] [blame] | 2556 | case 6: /* DIV */ |
| 2557 | delta++; |
| 2558 | assign( t1, getIReg(sz, eregOfRM(modrm)) ); |
| 2559 | codegen_div ( sz, t1, False ); |
| 2560 | DIP("div%c %s\n", nameISize(sz), nameIReg(sz, eregOfRM(modrm))); |
| 2561 | break; |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 2562 | case 7: /* IDIV */ |
| 2563 | delta++; |
| 2564 | assign( t1, getIReg(sz, eregOfRM(modrm)) ); |
| 2565 | codegen_div ( sz, t1, True ); |
| 2566 | DIP("idiv%c %s\n", nameISize(sz), nameIReg(sz, eregOfRM(modrm))); |
| 2567 | break; |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 2568 | default: |
| 2569 | vex_printf( |
| 2570 | "unhandled Grp3(R) case %d\n", (UInt)gregOfRM(modrm)); |
| 2571 | vpanic("Grp3(x86)"); |
| 2572 | } |
| 2573 | } else { |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 2574 | addr = disAMode ( &len, sorb, delta, dis_buf ); |
| 2575 | t1 = newTemp(ty); |
| 2576 | delta += len; |
| 2577 | assign(t1, loadLE(ty,mkexpr(addr))); |
| 2578 | switch (gregOfRM(modrm)) { |
| 2579 | case 0: { /* TEST */ |
| 2580 | d32 = getUDisp(sz, delta); delta += sz; |
| 2581 | dst1 = newTemp(ty); |
| 2582 | assign(dst1, binop(mkSizedOp(ty,Iop_And8), |
| 2583 | mkexpr(t1), mkU(ty,d32))); |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 2584 | setFlags_LOGIC( Iop_And8, dst1, ty ); |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 2585 | DIP("test%c $0x%x, %s\n", nameISize(sz), d32, dis_buf); |
| 2586 | break; |
| 2587 | } |
sewardj | 78fe791 | 2004-08-20 23:38:07 +0000 | [diff] [blame] | 2588 | #if 0 |
| 2589 | /* probably OK, but awaiting test case */ |
| 2590 | case 2: /* NOT */ |
| 2591 | storeLE( mkexpr(addr), unop(mkSizedOp(ty,Iop_Not8), mkexpr(t1))); |
| 2592 | DIP("not%c %s\n", nameISize(sz), dis_buf); |
| 2593 | break; |
| 2594 | #endif |
sewardj | 0c12ea8 | 2004-07-12 08:18:16 +0000 | [diff] [blame] | 2595 | case 3: /* NEG */ |
| 2596 | dst0 = newTemp(ty); |
| 2597 | src = newTemp(ty); |
| 2598 | dst1 = newTemp(ty); |
sewardj | a511afc | 2004-07-29 22:26:03 +0000 | [diff] [blame] | 2599 | assign(dst0, mkU(ty,0)); |
| 2600 | assign(src, mkexpr(t1)); |
| 2601 | assign(dst1, binop(mkSizedOp(ty,Iop_Sub8), mkexpr(dst0), mkexpr(src))); |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 2602 | setFlags_ADD_SUB(Iop_Sub8, src, dst0, ty); |
sewardj | 0c12ea8 | 2004-07-12 08:18:16 +0000 | [diff] [blame] | 2603 | storeLE( mkexpr(addr), mkexpr(dst1) ); |
| 2604 | DIP("neg%c %s\n", nameISize(sz), dis_buf); |
| 2605 | break; |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 2606 | case 4: /* MUL */ |
| 2607 | codegen_mulL_A_D ( sz, False, t1, dis_buf ); |
| 2608 | break; |
| 2609 | case 5: /* IMUL */ |
| 2610 | codegen_mulL_A_D ( sz, True, t1, dis_buf ); |
| 2611 | break; |
sewardj | 9690d92 | 2004-07-14 01:39:17 +0000 | [diff] [blame] | 2612 | case 6: /* DIV */ |
| 2613 | codegen_div ( sz, t1, False ); |
| 2614 | DIP("div%c %s\n", nameISize(sz), dis_buf); |
| 2615 | break; |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 2616 | case 7: /* IDIV */ |
| 2617 | codegen_div ( sz, t1, True ); |
| 2618 | DIP("idiv%c %s\n", nameISize(sz), dis_buf); |
| 2619 | break; |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 2620 | default: |
| 2621 | vex_printf( |
| 2622 | "unhandled Grp3(M) case %d\n", (UInt)gregOfRM(modrm)); |
| 2623 | vpanic("Grp3(x86)"); |
| 2624 | } |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 2625 | } |
| 2626 | return delta; |
| 2627 | } |
| 2628 | |
| 2629 | |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 2630 | /* Group 4 extended opcodes. */ |
| 2631 | static |
| 2632 | UInt dis_Grp4 ( UChar sorb, UInt delta ) |
| 2633 | { |
sewardj | 7ed2295 | 2004-07-29 00:09:58 +0000 | [diff] [blame] | 2634 | Int alen; |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 2635 | UChar modrm; |
sewardj | 7ed2295 | 2004-07-29 00:09:58 +0000 | [diff] [blame] | 2636 | UChar dis_buf[50]; |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 2637 | IRType ty = Ity_I8; |
sewardj | 7ed2295 | 2004-07-29 00:09:58 +0000 | [diff] [blame] | 2638 | IRTemp t1 = newTemp(ty); |
| 2639 | IRTemp t2 = newTemp(ty); |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 2640 | |
| 2641 | modrm = getIByte(delta); |
| 2642 | if (epartIsReg(modrm)) { |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 2643 | assign(t1, getIReg(1, eregOfRM(modrm))); |
| 2644 | switch (gregOfRM(modrm)) { |
sewardj | 7ed2295 | 2004-07-29 00:09:58 +0000 | [diff] [blame] | 2645 | case 0: /* INC */ |
| 2646 | assign(t2, binop(Iop_Add8, mkexpr(t1), mkU8(1))); |
| 2647 | putIReg(1, eregOfRM(modrm), mkexpr(t2)); |
| 2648 | setFlags_INC_DEC( True, t2, ty ); |
| 2649 | break; |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 2650 | case 1: /* DEC */ |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 2651 | assign(t2, binop(Iop_Sub8, mkexpr(t1), mkU8(1))); |
| 2652 | putIReg(1, eregOfRM(modrm), mkexpr(t2)); |
| 2653 | setFlags_INC_DEC( False, t2, ty ); |
| 2654 | break; |
| 2655 | default: |
| 2656 | vex_printf( |
| 2657 | "unhandled Grp4(R) case %d\n", (UInt)gregOfRM(modrm)); |
sewardj | 7ed2295 | 2004-07-29 00:09:58 +0000 | [diff] [blame] | 2658 | vpanic("Grp4(x86,R)"); |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 2659 | } |
| 2660 | delta++; |
| 2661 | DIP("%sb %s\n", nameGrp4(gregOfRM(modrm)), |
| 2662 | nameIReg(1, eregOfRM(modrm))); |
| 2663 | } else { |
sewardj | 7ed2295 | 2004-07-29 00:09:58 +0000 | [diff] [blame] | 2664 | IRTemp addr = disAMode ( &alen, sorb, delta, dis_buf ); |
| 2665 | assign( t1, loadLE(ty, mkexpr(addr)) ); |
| 2666 | switch (gregOfRM(modrm)) { |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 2667 | //-- case 0: /* INC */ |
| 2668 | //-- uInstr1(cb, INC, 1, TempReg, t1); |
| 2669 | //-- setFlagsFromUOpcode(cb, INC); |
| 2670 | //-- uInstr2(cb, STORE, 1, TempReg, t1, TempReg, t2); |
| 2671 | //-- break; |
sewardj | 7ed2295 | 2004-07-29 00:09:58 +0000 | [diff] [blame] | 2672 | case 1: /* DEC */ |
| 2673 | assign(t2, binop(Iop_Sub8, mkexpr(t1), mkU8(1))); |
| 2674 | storeLE( mkexpr(addr), mkexpr(t2) ); |
| 2675 | setFlags_INC_DEC( False, t2, ty ); |
| 2676 | break; |
| 2677 | default: |
| 2678 | vex_printf( |
| 2679 | "unhandled Grp4(M) case %d\n", (UInt)gregOfRM(modrm)); |
| 2680 | vpanic("Grp4(x86,M)"); |
| 2681 | } |
| 2682 | delta += alen; |
| 2683 | DIP("%sb %s\n", nameGrp4(gregOfRM(modrm)), dis_buf); |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 2684 | } |
| 2685 | return delta; |
| 2686 | } |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 2687 | |
| 2688 | |
| 2689 | /* Group 5 extended opcodes. */ |
| 2690 | static |
| 2691 | UInt dis_Grp5 ( UChar sorb, Int sz, UInt delta, Bool* isEnd ) |
| 2692 | { |
| 2693 | Int len; |
| 2694 | UChar modrm; |
| 2695 | UChar dis_buf[50]; |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 2696 | IRTemp addr = INVALID_IRTEMP; |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 2697 | IRType ty = szToITy(sz); |
| 2698 | IRTemp t1 = newTemp(ty); |
| 2699 | IRTemp t2 = INVALID_IRTEMP; |
| 2700 | |
| 2701 | modrm = getIByte(delta); |
| 2702 | if (epartIsReg(modrm)) { |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 2703 | assign(t1, getIReg(sz,eregOfRM(modrm))); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 2704 | switch (gregOfRM(modrm)) { |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 2705 | //-- case 0: /* INC */ |
| 2706 | //-- uInstr1(cb, INC, sz, TempReg, t1); |
| 2707 | //-- setFlagsFromUOpcode(cb, INC); |
| 2708 | //-- uInstr2(cb, PUT, sz, TempReg, t1, ArchReg, eregOfRM(modrm)); |
| 2709 | //-- break; |
| 2710 | //-- case 1: /* DEC */ |
| 2711 | //-- uInstr1(cb, DEC, sz, TempReg, t1); |
| 2712 | //-- setFlagsFromUOpcode(cb, DEC); |
| 2713 | //-- uInstr2(cb, PUT, sz, TempReg, t1, ArchReg, eregOfRM(modrm)); |
| 2714 | //-- break; |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 2715 | case 2: /* call Ev */ |
| 2716 | vassert(sz == 4); |
| 2717 | t2 = newTemp(Ity_I32); |
| 2718 | assign(t2, binop(Iop_Sub32, getIReg(4,R_ESP), mkU32(4))); |
| 2719 | putIReg(4, R_ESP, mkexpr(t2)); |
| 2720 | storeLE( mkexpr(t2), mkU32(guest_eip+delta+1)); |
sewardj | 78c19df | 2004-07-12 22:49:27 +0000 | [diff] [blame] | 2721 | jmp_treg(Ijk_Call,t1); |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 2722 | *isEnd = True; |
| 2723 | break; |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 2724 | case 4: /* jmp Ev */ |
| 2725 | vassert(sz == 4); |
sewardj | 78c19df | 2004-07-12 22:49:27 +0000 | [diff] [blame] | 2726 | jmp_treg(Ijk_Boring,t1); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 2727 | *isEnd = True; |
| 2728 | break; |
| 2729 | default: |
| 2730 | vex_printf( |
| 2731 | "unhandled Grp5(R) case %d\n", (UInt)gregOfRM(modrm)); |
| 2732 | vpanic("Grp5(x86)"); |
| 2733 | } |
| 2734 | delta++; |
| 2735 | DIP("%s%c %s\n", nameGrp5(gregOfRM(modrm)), |
| 2736 | nameISize(sz), nameIReg(sz, eregOfRM(modrm))); |
| 2737 | } else { |
| 2738 | addr = disAMode ( &len, sorb, delta, dis_buf ); |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 2739 | assign(t1, loadLE(ty,mkexpr(addr))); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 2740 | switch (gregOfRM(modrm)) { |
| 2741 | case 0: /* INC */ |
| 2742 | t2 = newTemp(ty); |
| 2743 | assign(t2, binop(mkSizedOp(ty,Iop_Add8), |
| 2744 | mkexpr(t1), mkU(ty,1))); |
| 2745 | setFlags_INC_DEC( True, t2, ty ); |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 2746 | storeLE(mkexpr(addr),mkexpr(t2)); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 2747 | break; |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 2748 | case 1: /* DEC */ |
| 2749 | t2 = newTemp(ty); |
| 2750 | assign(t2, binop(mkSizedOp(ty,Iop_Sub8), |
| 2751 | mkexpr(t1), mkU(ty,1))); |
| 2752 | setFlags_INC_DEC( False, t2, ty ); |
| 2753 | storeLE(mkexpr(addr),mkexpr(t2)); |
| 2754 | break; |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 2755 | case 2: /* call Ev */ |
| 2756 | vassert(sz == 4); |
| 2757 | t2 = newTemp(Ity_I32); |
| 2758 | assign(t2, binop(Iop_Sub32, getIReg(4,R_ESP), mkU32(4))); |
| 2759 | putIReg(4, R_ESP, mkexpr(t2)); |
| 2760 | storeLE( mkexpr(t2), mkU32(guest_eip+delta+len)); |
sewardj | 78c19df | 2004-07-12 22:49:27 +0000 | [diff] [blame] | 2761 | jmp_treg(Ijk_Call,t1); |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 2762 | *isEnd = True; |
| 2763 | break; |
| 2764 | case 4: /* JMP Ev */ |
| 2765 | vassert(sz == 4); |
sewardj | 78c19df | 2004-07-12 22:49:27 +0000 | [diff] [blame] | 2766 | jmp_treg(Ijk_Boring,t1); |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 2767 | *isEnd = True; |
| 2768 | break; |
sewardj | 0c12ea8 | 2004-07-12 08:18:16 +0000 | [diff] [blame] | 2769 | case 6: /* PUSH Ev */ |
| 2770 | vassert(sz == 4 || sz == 2); |
| 2771 | t2 = newTemp(Ity_I32); |
| 2772 | assign( t2, binop(Iop_Sub32,getIReg(4,R_ESP),mkU32(sz)) ); |
| 2773 | putIReg(4, R_ESP, mkexpr(t2) ); |
| 2774 | storeLE( mkexpr(t2), mkexpr(t1) ); |
| 2775 | break; |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 2776 | default: |
| 2777 | vex_printf( |
| 2778 | "unhandled Grp5(M) case %d\n", (UInt)gregOfRM(modrm)); |
| 2779 | vpanic("Grp5(x86)"); |
| 2780 | } |
| 2781 | delta += len; |
| 2782 | DIP("%s%c %s\n", nameGrp5(gregOfRM(modrm)), |
| 2783 | nameISize(sz), dis_buf); |
| 2784 | } |
| 2785 | return delta; |
| 2786 | } |
| 2787 | |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 2788 | /*------------------------------------------------------------*/ |
| 2789 | /*--- Disassembling string ops (including REP prefixes) ---*/ |
| 2790 | /*------------------------------------------------------------*/ |
| 2791 | |
| 2792 | /* Code shared by all the string ops */ |
| 2793 | static |
| 2794 | void dis_string_op_increment(Int sz, Int t_inc) |
| 2795 | { |
| 2796 | if (sz == 4 || sz == 2) { |
| 2797 | assign( t_inc, |
| 2798 | binop(Iop_Shl32, IRExpr_Get( OFFB_DFLAG, Ity_I32 ), |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 2799 | mkU8(sz/2) ) ); |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 2800 | } else { |
| 2801 | assign( t_inc, |
| 2802 | IRExpr_Get( OFFB_DFLAG, Ity_I32 ) ); |
| 2803 | } |
| 2804 | } |
| 2805 | |
| 2806 | #if 0 |
| 2807 | static |
| 2808 | void dis_string_op( void (*dis_OP)( Int, IRTemp ), |
| 2809 | Int sz, Char* name, UChar sorb ) |
| 2810 | { |
| 2811 | IRTemp t_inc = newTemp(Ity_I32); |
| 2812 | vassert(sorb == 0); |
| 2813 | dis_string_op_increment(sz, t_inc); |
| 2814 | dis_OP( sz, t_inc ); |
| 2815 | DIP("%s%c\n", name, nameISize(sz)); |
| 2816 | } |
| 2817 | #endif |
| 2818 | |
| 2819 | static |
| 2820 | void dis_MOVS ( Int sz, IRTemp t_inc ) |
| 2821 | { |
| 2822 | IRType ty = szToITy(sz); |
| 2823 | //IRTemp tv = newTemp(ty); /* value being copied */ |
| 2824 | IRTemp td = newTemp(Ity_I32); /* EDI */ |
| 2825 | IRTemp ts = newTemp(Ity_I32); /* ESI */ |
| 2826 | |
| 2827 | //uInstr2(cb, GET, 4, ArchReg, R_EDI, TempReg, td); |
| 2828 | //uInstr2(cb, GET, 4, ArchReg, R_ESI, TempReg, ts); |
| 2829 | assign( td, getIReg(4, R_EDI) ); |
| 2830 | assign( ts, getIReg(4, R_ESI) ); |
| 2831 | |
| 2832 | //uInstr2(cb, LOAD, sz, TempReg, ts, TempReg, tv); |
| 2833 | //uInstr2(cb, STORE,sz, TempReg, tv, TempReg, td); |
| 2834 | storeLE( mkexpr(td), loadLE(ty,mkexpr(ts)) ); |
| 2835 | |
| 2836 | //uInstr2(cb, ADD, 4, TempReg, t_inc, TempReg, td); |
| 2837 | //uInstr2(cb, ADD, 4, TempReg, t_inc, TempReg, ts); |
| 2838 | |
| 2839 | //uInstr2(cb, PUT, 4, TempReg, td, ArchReg, R_EDI); |
| 2840 | //uInstr2(cb, PUT, 4, TempReg, ts, ArchReg, R_ESI); |
| 2841 | putIReg( 4, R_EDI, binop(Iop_Add32, mkexpr(td), mkexpr(t_inc)) ); |
| 2842 | putIReg( 4, R_ESI, binop(Iop_Add32, mkexpr(ts), mkexpr(t_inc)) ); |
| 2843 | } |
| 2844 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 2845 | //-- static |
| 2846 | //-- void dis_LODS ( UCodeBlock* cb, Int sz, Int t_inc ) |
| 2847 | //-- { |
| 2848 | //-- Int ta = newTemp(cb); /* EAX */ |
| 2849 | //-- Int ts = newTemp(cb); /* ESI */ |
| 2850 | //-- |
| 2851 | //-- uInstr2(cb, GET, 4, ArchReg, R_ESI, TempReg, ts); |
| 2852 | //-- uInstr2(cb, LOAD, sz, TempReg, ts, TempReg, ta); |
| 2853 | //-- uInstr2(cb, PUT, sz, TempReg, ta, ArchReg, R_EAX); |
| 2854 | //-- |
| 2855 | //-- uInstr2(cb, ADD, 4, TempReg, t_inc, TempReg, ts); |
| 2856 | //-- uInstr2(cb, PUT, 4, TempReg, ts, ArchReg, R_ESI); |
| 2857 | //-- } |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 2858 | |
| 2859 | static |
| 2860 | void dis_STOS ( Int sz, IRTemp t_inc ) |
| 2861 | { |
| 2862 | IRType ty = szToITy(sz); |
| 2863 | IRTemp ta = newTemp(ty); /* EAX */ |
| 2864 | IRTemp td = newTemp(Ity_I32); /* EDI */ |
| 2865 | |
| 2866 | //uInstr2(cb, GET, sz, ArchReg, R_EAX, TempReg, ta); |
| 2867 | assign( ta, getIReg(sz, R_EAX) ); |
| 2868 | |
| 2869 | //uInstr2(cb, GET, 4, ArchReg, R_EDI, TempReg, td); |
| 2870 | assign( td, getIReg(4, R_EDI) ); |
| 2871 | |
| 2872 | //uInstr2(cb, STORE, sz, TempReg, ta, TempReg, td); |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 2873 | storeLE( mkexpr(td), mkexpr(ta) ); |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 2874 | |
| 2875 | //uInstr2(cb, ADD, 4, TempReg, t_inc, TempReg, td); |
| 2876 | //uInstr2(cb, PUT, 4, TempReg, td, ArchReg, R_EDI); |
| 2877 | putIReg( 4, R_EDI, binop(Iop_Add32, mkexpr(td), mkexpr(t_inc)) ); |
| 2878 | } |
| 2879 | |
| 2880 | static |
| 2881 | void dis_CMPS ( Int sz, IRTemp t_inc ) |
| 2882 | { |
| 2883 | IRType ty = szToITy(sz); |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 2884 | IRTemp tdv = newTemp(ty); /* (EDI) */ |
| 2885 | IRTemp tsv = newTemp(ty); /* (ESI) */ |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 2886 | IRTemp td = newTemp(Ity_I32); /* EDI */ |
| 2887 | IRTemp ts = newTemp(Ity_I32); /* ESI */ |
| 2888 | |
| 2889 | //uInstr2(cb, GET, 4, ArchReg, R_EDI, TempReg, td); |
| 2890 | assign( td, getIReg(4, R_EDI) ); |
| 2891 | |
| 2892 | //uInstr2(cb, GET, 4, ArchReg, R_ESI, TempReg, ts); |
| 2893 | assign( ts, getIReg(4, R_ESI) ); |
| 2894 | |
| 2895 | //uInstr2(cb, LOAD, sz, TempReg, td, TempReg, tdv); |
| 2896 | assign( tdv, loadLE(ty,mkexpr(td)) ); |
| 2897 | |
| 2898 | //uInstr2(cb, LOAD, sz, TempReg, ts, TempReg, tsv); |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 2899 | assign( tsv, loadLE(ty,mkexpr(ts)) ); |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 2900 | |
| 2901 | //uInstr2(cb, SUB, sz, TempReg, tdv, TempReg, tsv); |
| 2902 | //setFlagsFromUOpcode(cb, SUB); |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 2903 | setFlags_ADD_SUB ( Iop_Sub8, tdv, tsv, ty ); |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 2904 | |
| 2905 | //uInstr2(cb, ADD, 4, TempReg, t_inc, TempReg, td); |
| 2906 | //uInstr2(cb, ADD, 4, TempReg, t_inc, TempReg, ts); |
| 2907 | |
| 2908 | //uInstr2(cb, PUT, 4, TempReg, td, ArchReg, R_EDI); |
| 2909 | putIReg(4, R_EDI, binop(Iop_Add32, mkexpr(td), mkexpr(t_inc)) ); |
| 2910 | |
| 2911 | //uInstr2(cb, PUT, 4, TempReg, ts, ArchReg, R_ESI); |
| 2912 | putIReg(4, R_ESI, binop(Iop_Add32, mkexpr(ts), mkexpr(t_inc)) ); |
| 2913 | } |
| 2914 | |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 2915 | static |
| 2916 | void dis_SCAS ( Int sz, IRTemp t_inc ) |
| 2917 | { |
| 2918 | IRType ty = szToITy(sz); |
sewardj | 8229288 | 2004-07-27 00:15:59 +0000 | [diff] [blame] | 2919 | IRTemp ta = newTemp(ty); /* EAX */ |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 2920 | IRTemp td = newTemp(Ity_I32); /* EDI */ |
| 2921 | IRTemp tdv = newTemp(ty); /* (EDI) */ |
| 2922 | |
| 2923 | //uInstr2(cb, GET, sz, ArchReg, R_EAX, TempReg, ta); |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 2924 | assign( ta, getIReg(sz, R_EAX) ); |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 2925 | |
| 2926 | //uInstr2(cb, GET, 4, ArchReg, R_EDI, TempReg, td); |
| 2927 | assign( td, getIReg(4, R_EDI) ); |
| 2928 | |
| 2929 | //uInstr2(cb, LOAD, sz, TempReg, td, TempReg, tdv); |
| 2930 | assign( tdv, loadLE(ty,mkexpr(td)) ); |
| 2931 | |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 2932 | //uInstr2(cb, SUB, sz, TempReg, tdv, TempReg, ta); |
| 2933 | //setFlagsFromUOpcode(cb, SUB); |
sewardj | b9c5cf6 | 2004-08-24 15:10:38 +0000 | [diff] [blame^] | 2934 | setFlags_ADD_SUB( Iop_Sub8, tdv, ta, ty ); |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 2935 | |
| 2936 | //uInstr2(cb, ADD, 4, TempReg, t_inc, TempReg, td); |
| 2937 | //uInstr2(cb, PUT, 4, TempReg, td, ArchReg, R_EDI); |
| 2938 | putIReg(4, R_EDI, binop(Iop_Add32, mkexpr(td), mkexpr(t_inc)) ); |
| 2939 | } |
sewardj | 8229288 | 2004-07-27 00:15:59 +0000 | [diff] [blame] | 2940 | |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 2941 | |
| 2942 | /* Wrap the appropriate string op inside a REP/REPE/REPNE. |
| 2943 | We assume the insn is the last one in the basic block, and so emit a jump |
| 2944 | to the next insn, rather than just falling through. */ |
| 2945 | static |
| 2946 | void dis_REP_op ( Condcode cond, |
| 2947 | void (*dis_OP)(Int, IRTemp), |
| 2948 | Int sz, Addr32 eip, Addr32 eip_next, Char* name ) |
| 2949 | { |
| 2950 | IRTemp t_inc = newTemp(Ity_I32); |
| 2951 | IRTemp tc = newTemp(Ity_I32); /* ECX */ |
| 2952 | |
| 2953 | //uInstr2 (cb, GET, 4, ArchReg, R_ECX, TempReg, tc); |
| 2954 | assign( tc, getIReg(4,R_ECX) ); |
| 2955 | |
| 2956 | //uInstr2 (cb, JIFZ, 4, TempReg, tc, Literal, 0); |
| 2957 | //uLiteral(cb, eip_next); |
| 2958 | stmt( IRStmt_Exit( binop(Iop_CmpEQ32,mkexpr(tc),mkU32(0)), |
| 2959 | IRConst_U32(eip_next) ) ); |
| 2960 | |
| 2961 | //uInstr1 (cb, DEC, 4, TempReg, tc); |
| 2962 | //uInstr2 (cb, PUT, 4, TempReg, tc, ArchReg, R_ECX); |
| 2963 | putIReg(4, R_ECX, binop(Iop_Sub32, mkexpr(tc), mkU32(1)) ); |
| 2964 | |
| 2965 | dis_string_op_increment(sz, t_inc); |
| 2966 | dis_OP (sz, t_inc); |
| 2967 | |
| 2968 | if (cond == CondAlways) { |
sewardj | 78c19df | 2004-07-12 22:49:27 +0000 | [diff] [blame] | 2969 | jmp_lit(Ijk_Boring,eip); |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 2970 | } else { |
| 2971 | stmt( IRStmt_Exit( calculate_condition(cond), |
| 2972 | IRConst_U32(eip) ) ); |
sewardj | 78c19df | 2004-07-12 22:49:27 +0000 | [diff] [blame] | 2973 | jmp_lit(Ijk_Boring,eip_next); |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 2974 | } |
| 2975 | DIP("%s%c\n", name, nameISize(sz)); |
| 2976 | } |
| 2977 | |
| 2978 | /*------------------------------------------------------------*/ |
| 2979 | /*--- Arithmetic, etc. ---*/ |
| 2980 | /*------------------------------------------------------------*/ |
| 2981 | |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 2982 | /* (I)MUL E, G. Supplied eip points to the modR/M byte. */ |
| 2983 | static |
| 2984 | UInt dis_mul_E_G ( UChar sorb, |
| 2985 | Int size, |
| 2986 | UInt delta0, |
sewardj | 56296d8 | 2004-07-30 01:52:45 +0000 | [diff] [blame] | 2987 | Bool syned ) |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 2988 | { |
sewardj | 71a6536 | 2004-07-28 01:48:34 +0000 | [diff] [blame] | 2989 | Int alen; |
| 2990 | UChar dis_buf[50]; |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 2991 | UChar rm = getIByte(delta0); |
| 2992 | IRType ty = szToITy(size); |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 2993 | IRTemp te = newTemp(ty); |
| 2994 | IRTemp tg = newTemp(ty); |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 2995 | |
sewardj | 56296d8 | 2004-07-30 01:52:45 +0000 | [diff] [blame] | 2996 | vassert(syned); |
sewardj | 71a6536 | 2004-07-28 01:48:34 +0000 | [diff] [blame] | 2997 | |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 2998 | if (epartIsReg(rm)) { |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 2999 | assign( tg, getIReg(size, gregOfRM(rm)) ); |
| 3000 | assign( te, getIReg(size, eregOfRM(rm)) ); |
sewardj | 56296d8 | 2004-07-30 01:52:45 +0000 | [diff] [blame] | 3001 | setFlags_MUL ( ty, te, tg, syned ? CC_OP_SMULB : CC_OP_UMULB ); |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 3002 | putIReg(size, gregOfRM(rm), |
| 3003 | binop(mkSizedOp(ty,Iop_Mul8), |
| 3004 | mkexpr(te), mkexpr(tg))); |
| 3005 | |
sewardj | 56296d8 | 2004-07-30 01:52:45 +0000 | [diff] [blame] | 3006 | DIP("%smul%c %s, %s\n", syned ? "i" : "", |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 3007 | nameISize(size), |
| 3008 | nameIReg(size,eregOfRM(rm)), |
| 3009 | nameIReg(size,gregOfRM(rm))); |
| 3010 | return 1+delta0; |
| 3011 | } else { |
sewardj | 71a6536 | 2004-07-28 01:48:34 +0000 | [diff] [blame] | 3012 | IRTemp addr = disAMode( &alen, sorb, delta0, dis_buf ); |
| 3013 | assign( tg, getIReg(size, gregOfRM(rm)) ); |
| 3014 | assign( te, loadLE(ty,mkexpr(addr)) ); |
sewardj | 56296d8 | 2004-07-30 01:52:45 +0000 | [diff] [blame] | 3015 | setFlags_MUL ( ty, te, tg, syned ? CC_OP_SMULB : CC_OP_UMULB ); |
sewardj | 71a6536 | 2004-07-28 01:48:34 +0000 | [diff] [blame] | 3016 | putIReg(size, gregOfRM(rm), |
| 3017 | binop(mkSizedOp(ty,Iop_Mul8), |
| 3018 | mkexpr(te), mkexpr(tg))); |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 3019 | |
sewardj | 56296d8 | 2004-07-30 01:52:45 +0000 | [diff] [blame] | 3020 | DIP("%smul%c %s, %s\n", syned ? "i" : "", |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 3021 | nameISize(size), |
| 3022 | dis_buf, nameIReg(size,gregOfRM(rm))); |
sewardj | 71a6536 | 2004-07-28 01:48:34 +0000 | [diff] [blame] | 3023 | return alen+delta0; |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 3024 | } |
| 3025 | } |
| 3026 | |
| 3027 | |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 3028 | /* IMUL I * E -> G. Supplied eip points to the modR/M byte. */ |
| 3029 | static |
| 3030 | UInt dis_imul_I_E_G ( UChar sorb, |
| 3031 | Int size, |
| 3032 | UInt delta, |
| 3033 | Int litsize ) |
| 3034 | { |
sewardj | b81f8b3 | 2004-07-30 10:17:50 +0000 | [diff] [blame] | 3035 | Int d32; |
| 3036 | Char dis_buf[50]; |
| 3037 | UChar rm = getIByte(delta); |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 3038 | IRType ty = szToITy(size); |
| 3039 | IRTemp te = newTemp(ty); |
| 3040 | IRTemp tl = newTemp(ty); |
| 3041 | |
sewardj | b81f8b3 | 2004-07-30 10:17:50 +0000 | [diff] [blame] | 3042 | vassert(size == 1 || size == 2 || size == 4); |
| 3043 | |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 3044 | if (epartIsReg(rm)) { |
| 3045 | assign(te, getIReg(size, eregOfRM(rm))); |
| 3046 | delta++; |
| 3047 | } else { |
| 3048 | vassert(0); |
| 3049 | #if 0 |
| 3050 | UInt pair = disAMode ( cb, sorb, eip, dis_buf ); |
| 3051 | ta = LOW24(pair); |
| 3052 | uInstr2(cb, LOAD, size, TempReg, ta, TempReg, te); |
| 3053 | eip += HI8(pair); |
| 3054 | #endif |
| 3055 | } |
| 3056 | d32 = getSDisp(litsize,delta); |
| 3057 | delta += litsize; |
| 3058 | |
sewardj | b81f8b3 | 2004-07-30 10:17:50 +0000 | [diff] [blame] | 3059 | if (size == 1) d32 &= 0xFF; |
| 3060 | if (size == 2) d32 &= 0xFFFF; |
| 3061 | |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 3062 | assign(tl, mkU(ty,d32)); |
sewardj | 56296d8 | 2004-07-30 01:52:45 +0000 | [diff] [blame] | 3063 | setFlags_MUL ( ty, te, tl, CC_OP_SMULB ); |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 3064 | putIReg(size, gregOfRM(rm), |
| 3065 | binop(mkSizedOp(ty,Iop_Mul8), |
| 3066 | mkexpr(te), mkexpr(tl))); |
| 3067 | |
| 3068 | DIP("imul %d, %s, %s\n", d32, |
| 3069 | ( epartIsReg(rm) ? nameIReg(size,eregOfRM(rm)) : dis_buf ), |
| 3070 | nameIReg(size,gregOfRM(rm)) ); |
| 3071 | return delta; |
| 3072 | } |
| 3073 | |
| 3074 | |
sewardj | d1725d1 | 2004-08-12 20:46:53 +0000 | [diff] [blame] | 3075 | /*------------------------------------------------------------*/ |
| 3076 | /*--- x87 floating point insns. ---*/ |
| 3077 | /*------------------------------------------------------------*/ |
| 3078 | |
| 3079 | /* Get/set the top-of-stack pointer. */ |
| 3080 | |
| 3081 | static IRExpr* get_ftop ( void ) |
| 3082 | { |
| 3083 | return IRExpr_Get( OFFB_FTOP, Ity_I32 ); |
| 3084 | } |
| 3085 | |
| 3086 | static IRStmt* put_ftop ( IRExpr* e ) |
| 3087 | { |
| 3088 | return IRStmt_Put( OFFB_FTOP, e ); |
| 3089 | } |
| 3090 | |
| 3091 | /* Given i, generate an expression which is the offset in the guest |
| 3092 | state of ST(i), considering the current value of FTOP. */ |
| 3093 | |
| 3094 | static IRExpr* off_ST ( Int i ) |
| 3095 | { |
| 3096 | vassert(i >= 0 && i <= 7); |
| 3097 | return |
| 3098 | binop(Iop_Add32, |
| 3099 | binop(Iop_Mul32, |
| 3100 | binop(Iop_And32, |
| 3101 | binop(Iop_Add32, get_ftop(), mkU32(i)), |
| 3102 | mkU32(7)), |
| 3103 | mkU32(8)), |
| 3104 | mkU32(OFFB_F0) |
| 3105 | ); |
| 3106 | } |
| 3107 | |
| 3108 | /* Given i, and some expression e, generate 'ST(i) = e'. */ |
| 3109 | |
| 3110 | static IRStmt* put_ST ( Int i, IRExpr* value ) |
| 3111 | { |
| 3112 | return |
| 3113 | IRStmt_PutI( off_ST(i), value, OFFB_F0, OFFB_F7+8-1 ); |
| 3114 | } |
| 3115 | |
| 3116 | /* Given i, generate an expression yielding 'ST(i)'. */ |
| 3117 | |
| 3118 | static IRExpr* get_ST ( Int i ) |
| 3119 | { |
| 3120 | return |
| 3121 | IRExpr_GetI( off_ST(i), Ity_F64, OFFB_F0, OFFB_F7+8-1 ); |
| 3122 | } |
| 3123 | |
| 3124 | /* Adjust FTOP downwards by one register. */ |
| 3125 | |
sewardj | a58ea66 | 2004-08-15 03:12:41 +0000 | [diff] [blame] | 3126 | static IRStmt* fp_push ( void ) |
sewardj | d1725d1 | 2004-08-12 20:46:53 +0000 | [diff] [blame] | 3127 | { |
| 3128 | return |
| 3129 | put_ftop( |
| 3130 | binop(Iop_And32, |
| 3131 | binop(Iop_Sub32, get_ftop(), mkU32(1)), |
| 3132 | mkU32(7)) |
| 3133 | ); |
| 3134 | } |
| 3135 | |
sewardj | a58ea66 | 2004-08-15 03:12:41 +0000 | [diff] [blame] | 3136 | /* Adjust FTOP upwards by one register. */ |
| 3137 | |
| 3138 | static IRStmt* fp_pop ( void ) |
| 3139 | { |
| 3140 | return |
| 3141 | put_ftop( |
| 3142 | binop(Iop_And32, |
| 3143 | binop(Iop_Add32, get_ftop(), mkU32(1)), |
| 3144 | mkU32(7)) |
| 3145 | ); |
| 3146 | } |
| 3147 | |
| 3148 | static |
| 3149 | void fp_do_op_mem_ST_0 ( IRTemp addr, UChar* op_txt, UChar* dis_buf, |
| 3150 | IROp op, Bool dbl ) |
| 3151 | { |
| 3152 | DIP("f%s%c %s", op_txt, dbl?'l':'s', dis_buf); |
| 3153 | if (dbl) { |
| 3154 | stmt( put_ST(0, binop(op, get_ST(0), loadLE(Ity_F64,mkexpr(addr))))); |
| 3155 | } else { |
| 3156 | vassert(0); |
| 3157 | } |
| 3158 | } |
| 3159 | |
sewardj | d1725d1 | 2004-08-12 20:46:53 +0000 | [diff] [blame] | 3160 | |
| 3161 | static |
| 3162 | UInt dis_FPU ( Bool* decode_ok, UChar sorb, UInt delta ) |
| 3163 | { |
sewardj | a58ea66 | 2004-08-15 03:12:41 +0000 | [diff] [blame] | 3164 | Int len; |
| 3165 | UInt r_src, r_dst; |
| 3166 | Char dis_buf[32]; |
sewardj | bb53f8c | 2004-08-14 11:50:01 +0000 | [diff] [blame] | 3167 | IRTemp t1; |
sewardj | d1725d1 | 2004-08-12 20:46:53 +0000 | [diff] [blame] | 3168 | |
| 3169 | /* On entry, delta points at the second byte of the insn (the modrm |
| 3170 | byte).*/ |
| 3171 | UChar first_opcode = getIByte(delta-1); |
| 3172 | UChar modrm = getIByte(delta+0); |
| 3173 | |
| 3174 | /* -+-+-+-+-+-+-+-+-+-+-+-+ 0xD8 opcodes +-+-+-+-+-+-+-+ */ |
| 3175 | |
| 3176 | if (first_opcode == 0xD8) { |
| 3177 | goto decode_fail; |
| 3178 | } |
| 3179 | |
| 3180 | /* -+-+-+-+-+-+-+-+-+-+-+-+ 0xD9 opcodes +-+-+-+-+-+-+-+ */ |
| 3181 | else |
| 3182 | if (first_opcode == 0xD9) { |
sewardj | bb53f8c | 2004-08-14 11:50:01 +0000 | [diff] [blame] | 3183 | if (modrm < 0xC0) { |
| 3184 | goto decode_fail; |
| 3185 | } else { |
| 3186 | delta++; |
| 3187 | switch (modrm) { |
| 3188 | case 0xC0 ... 0xC7: /* FLD %st(?) */ |
sewardj | a58ea66 | 2004-08-15 03:12:41 +0000 | [diff] [blame] | 3189 | r_src = (UInt)modrm - 0xC0; |
| 3190 | DIP("fld %%st(%d)\n", r_src); |
sewardj | bb53f8c | 2004-08-14 11:50:01 +0000 | [diff] [blame] | 3191 | t1 = newTemp(Ity_F64); |
sewardj | a58ea66 | 2004-08-15 03:12:41 +0000 | [diff] [blame] | 3192 | assign(t1, get_ST(r_src)); |
| 3193 | stmt( fp_push() ); |
sewardj | bb53f8c | 2004-08-14 11:50:01 +0000 | [diff] [blame] | 3194 | stmt( put_ST(0, mkexpr(t1)) ); |
| 3195 | break; |
| 3196 | |
sewardj | a58ea66 | 2004-08-15 03:12:41 +0000 | [diff] [blame] | 3197 | case 0xEE: /* FLDZ */ |
| 3198 | DIP("fldz"); |
| 3199 | stmt( fp_push() ); |
| 3200 | stmt( put_ST(0, IRExpr_Const(IRConst_F64(0.0))) ); |
| 3201 | break; |
| 3202 | |
sewardj | bb53f8c | 2004-08-14 11:50:01 +0000 | [diff] [blame] | 3203 | default: |
| 3204 | goto decode_fail; |
| 3205 | } |
| 3206 | } |
sewardj | d1725d1 | 2004-08-12 20:46:53 +0000 | [diff] [blame] | 3207 | } |
| 3208 | |
| 3209 | /* -+-+-+-+-+-+-+-+-+-+-+-+ 0xDA opcodes +-+-+-+-+-+-+-+ */ |
| 3210 | else |
| 3211 | if (first_opcode == 0xDA) { |
sewardj | bb53f8c | 2004-08-14 11:50:01 +0000 | [diff] [blame] | 3212 | |
| 3213 | if (modrm < 0xC0) { |
| 3214 | |
| 3215 | /* bits 5,4,3 are an opcode extension, and the modRM also |
| 3216 | specifies an address. */ |
| 3217 | IRTemp addr = disAMode( &len, sorb, delta, dis_buf ); |
| 3218 | delta += len; |
| 3219 | |
| 3220 | switch (gregOfRM(modrm)) { |
| 3221 | case 1: /* FIMUL m32int */ |
| 3222 | DIP("fimull %s", dis_buf); |
| 3223 | stmt( put_ST(0, |
| 3224 | binop(Iop_MulF64, |
| 3225 | get_ST(0), |
| 3226 | unop(Iop_I64toF64, |
| 3227 | unop(Iop_32Sto64, |
| 3228 | loadLE(Ity_I32, mkexpr(addr))))))); |
| 3229 | break; |
| 3230 | |
| 3231 | default: |
| 3232 | vex_printf("unhandled opc_aux = 0x%2x\n", gregOfRM(modrm)); |
| 3233 | vex_printf("first_opcode == 0xDA\n"); |
| 3234 | goto decode_fail; |
| 3235 | } |
| 3236 | } else { |
| 3237 | goto decode_fail; |
| 3238 | } |
sewardj | d1725d1 | 2004-08-12 20:46:53 +0000 | [diff] [blame] | 3239 | } |
| 3240 | |
| 3241 | /* -+-+-+-+-+-+-+-+-+-+-+-+ 0xDB opcodes +-+-+-+-+-+-+-+ */ |
| 3242 | else |
| 3243 | if (first_opcode == 0xDB) { |
| 3244 | goto decode_fail; |
| 3245 | } |
| 3246 | |
| 3247 | /* -+-+-+-+-+-+-+-+-+-+-+-+ 0xDC opcodes +-+-+-+-+-+-+-+ */ |
| 3248 | else |
| 3249 | if (first_opcode == 0xDC) { |
sewardj | a58ea66 | 2004-08-15 03:12:41 +0000 | [diff] [blame] | 3250 | if (modrm < 0xC0) { |
| 3251 | |
| 3252 | /* bits 5,4,3 are an opcode extension, and the modRM also |
| 3253 | specifies an address. */ |
| 3254 | IRTemp addr = disAMode( &len, sorb, delta, dis_buf ); |
| 3255 | delta += len; |
| 3256 | |
| 3257 | switch (gregOfRM(modrm)) { |
| 3258 | |
| 3259 | case 0: /* FADD double-real */ |
| 3260 | fp_do_op_mem_ST_0 ( addr, "add", dis_buf, Iop_AddF64, True ); |
| 3261 | break; |
| 3262 | |
| 3263 | default: |
| 3264 | vex_printf("unhandled opc_aux = 0x%2x\n", gregOfRM(modrm)); |
| 3265 | vex_printf("first_opcode == 0xDC\n"); |
| 3266 | goto decode_fail; |
| 3267 | } |
| 3268 | |
| 3269 | } else { |
| 3270 | goto decode_fail; |
| 3271 | } |
sewardj | d1725d1 | 2004-08-12 20:46:53 +0000 | [diff] [blame] | 3272 | } |
| 3273 | |
| 3274 | /* -+-+-+-+-+-+-+-+-+-+-+-+ 0xDD opcodes +-+-+-+-+-+-+-+ */ |
| 3275 | else |
| 3276 | if (first_opcode == 0xDD) { |
| 3277 | |
| 3278 | if (modrm < 0xC0) { |
| 3279 | |
sewardj | bb53f8c | 2004-08-14 11:50:01 +0000 | [diff] [blame] | 3280 | /* bits 5,4,3 are an opcode extension, and the modRM also |
sewardj | d1725d1 | 2004-08-12 20:46:53 +0000 | [diff] [blame] | 3281 | specifies an address. */ |
sewardj | bb53f8c | 2004-08-14 11:50:01 +0000 | [diff] [blame] | 3282 | IRTemp addr = disAMode( &len, sorb, delta, dis_buf ); |
| 3283 | delta += len; |
sewardj | d1725d1 | 2004-08-12 20:46:53 +0000 | [diff] [blame] | 3284 | |
| 3285 | switch (gregOfRM(modrm)) { |
| 3286 | |
| 3287 | case 0: /* FLD double-real */ |
| 3288 | DIP("fldD %s\n", dis_buf); |
sewardj | a58ea66 | 2004-08-15 03:12:41 +0000 | [diff] [blame] | 3289 | stmt( fp_push() ); |
sewardj | bb53f8c | 2004-08-14 11:50:01 +0000 | [diff] [blame] | 3290 | stmt( put_ST(0, IRExpr_LDle(Ity_F64, mkexpr(addr))) ); |
| 3291 | break; |
sewardj | d1725d1 | 2004-08-12 20:46:53 +0000 | [diff] [blame] | 3292 | |
| 3293 | #if 0 |
| 3294 | case 2: /* FST double-real */ |
| 3295 | IFDB( if (dis) printf("\tfstD\t%s\n",t_addr); ) |
| 3296 | if (!fp_is_empty_tag(fp_get_tag_ST(0))) { |
| 3297 | vd_addr = fp_get_reg_ST(0); |
| 3298 | } else { |
| 3299 | vd_addr = NAN; |
| 3300 | fp_set_stack_underflow(); |
| 3301 | } |
| 3302 | setDMem(a_addr,vd_addr); |
| 3303 | break; |
sewardj | d1725d1 | 2004-08-12 20:46:53 +0000 | [diff] [blame] | 3304 | #endif |
sewardj | a58ea66 | 2004-08-15 03:12:41 +0000 | [diff] [blame] | 3305 | case 3: /* FSTP double-real */ |
| 3306 | DIP("fstpD %s", dis_buf); |
| 3307 | storeLE(mkexpr(addr), get_ST(0)); |
| 3308 | stmt( fp_pop() ); |
| 3309 | break; |
sewardj | d1725d1 | 2004-08-12 20:46:53 +0000 | [diff] [blame] | 3310 | |
| 3311 | default: |
sewardj | bb53f8c | 2004-08-14 11:50:01 +0000 | [diff] [blame] | 3312 | vex_printf("unhandled opc_aux = 0x%2x\n", gregOfRM(modrm)); |
| 3313 | vex_printf("first_opcode == 0xDD\n"); |
sewardj | d1725d1 | 2004-08-12 20:46:53 +0000 | [diff] [blame] | 3314 | goto decode_fail; |
sewardj | bb53f8c | 2004-08-14 11:50:01 +0000 | [diff] [blame] | 3315 | } |
sewardj | d1725d1 | 2004-08-12 20:46:53 +0000 | [diff] [blame] | 3316 | } else { |
sewardj | a58ea66 | 2004-08-15 03:12:41 +0000 | [diff] [blame] | 3317 | delta++; |
| 3318 | switch (modrm) { |
| 3319 | case 0xD8 ... 0xDF: /* FSTP %st(0),%st(?) */ |
| 3320 | r_dst = (UInt)modrm - 0xD8; |
| 3321 | DIP("fstp %%st(0),%%st(%d)\n", r_dst); |
| 3322 | stmt( put_ST(r_dst, get_ST(0)) ); |
| 3323 | stmt( fp_pop() ); |
| 3324 | break; |
| 3325 | default: |
| 3326 | goto decode_fail; |
| 3327 | } |
sewardj | d1725d1 | 2004-08-12 20:46:53 +0000 | [diff] [blame] | 3328 | } |
| 3329 | } |
| 3330 | |
| 3331 | /* -+-+-+-+-+-+-+-+-+-+-+-+ 0xDE opcodes +-+-+-+-+-+-+-+ */ |
| 3332 | else |
| 3333 | if (first_opcode == 0xDE) { |
| 3334 | goto decode_fail; |
| 3335 | } |
| 3336 | |
| 3337 | /* -+-+-+-+-+-+-+-+-+-+-+-+ 0xDF opcodes +-+-+-+-+-+-+-+ */ |
| 3338 | else |
| 3339 | if (first_opcode == 0xDF) { |
| 3340 | goto decode_fail; |
| 3341 | } |
| 3342 | |
| 3343 | else |
| 3344 | vpanic("dis_FPU(x86): invalid primary opcode"); |
| 3345 | |
| 3346 | decode_success: |
| 3347 | *decode_ok = True; |
| 3348 | return delta; |
| 3349 | |
| 3350 | decode_fail: |
| 3351 | *decode_ok = False; |
| 3352 | return delta; |
| 3353 | } |
| 3354 | |
| 3355 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 3356 | //-- /* Handle FPU insns which read/write memory. On entry, eip points to |
| 3357 | //-- the second byte of the insn (the one following D8 .. DF). */ |
| 3358 | //-- static |
| 3359 | //-- Addr dis_fpu_mem ( UCodeBlock* cb, |
| 3360 | //-- UChar sorb, |
| 3361 | //-- Int size, Bool is_write, |
| 3362 | //-- Addr eip, UChar first_byte ) |
| 3363 | //-- { |
| 3364 | //-- Int ta; |
| 3365 | //-- UInt pair; |
| 3366 | //-- UChar dis_buf[50]; |
| 3367 | //-- UChar second_byte = getIByte(delta); |
| 3368 | //-- vg_assert(second_byte < 0xC0); |
| 3369 | //-- second_byte &= 0x38; |
| 3370 | //-- pair = disAMode ( cb, sorb, eip, dis_buf ); |
| 3371 | //-- ta = LOW24(pair); |
| 3372 | //-- eip += HI8(pair); |
| 3373 | //-- uInstr2(cb, is_write ? FPU_W : FPU_R, size, |
| 3374 | //-- Lit16, |
| 3375 | //-- (((UShort)first_byte) << 8) | ((UShort)second_byte), |
| 3376 | //-- TempReg, ta); |
| 3377 | //-- if (is_write) { |
| 3378 | //-- DIP("fpu_w_%d 0x%x:0x%x, %s\n", |
| 3379 | //-- size, (UInt)first_byte, (UInt)second_byte, dis_buf ); |
| 3380 | //-- } else { |
| 3381 | //-- DIP("fpu_r_%d %s, 0x%x:0x%x\n", |
| 3382 | //-- size, dis_buf, (UInt)first_byte, (UInt)second_byte ); |
| 3383 | //-- } |
| 3384 | //-- return eip; |
| 3385 | //-- } |
| 3386 | //-- |
| 3387 | //-- |
| 3388 | //-- /* Handle FPU insns which don't reference memory. On entry, eip points to |
| 3389 | //-- the second byte of the insn (the one following D8 .. DF). */ |
| 3390 | //-- static |
| 3391 | //-- Addr dis_fpu_no_mem ( UCodeBlock* cb, Addr eip, UChar first_byte ) |
| 3392 | //-- { |
| 3393 | //-- Bool sets_ZCP = False; |
| 3394 | //-- Bool uses_ZCP = False; |
| 3395 | //-- UChar second_byte = getUChar(eip); eip++; |
| 3396 | //-- vg_assert(second_byte >= 0xC0); |
| 3397 | //-- |
| 3398 | //-- /* Does the insn write any integer condition codes (%EIP) ? */ |
| 3399 | //-- |
| 3400 | //-- if (first_byte == 0xDB && second_byte >= 0xF0 && second_byte <= 0xF7) { |
| 3401 | //-- /* FCOMI */ |
| 3402 | //-- sets_ZCP = True; |
| 3403 | //-- } else |
| 3404 | //-- if (first_byte == 0xDF && second_byte >= 0xF0 && second_byte <= 0xF7) { |
| 3405 | //-- /* FCOMIP */ |
| 3406 | //-- sets_ZCP = True; |
| 3407 | //-- } else |
| 3408 | //-- if (first_byte == 0xDB && second_byte >= 0xE8 && second_byte <= 0xEF) { |
| 3409 | //-- /* FUCOMI */ |
| 3410 | //-- sets_ZCP = True; |
| 3411 | //-- } else |
| 3412 | //-- if (first_byte == 0xDF && second_byte >= 0xE8 && second_byte <= 0xEF) { |
| 3413 | //-- /* FUCOMIP */ |
| 3414 | //-- sets_ZCP = True; |
| 3415 | //-- } |
| 3416 | //-- |
| 3417 | //-- /* Dually, does the insn read any integer condition codes (%EIP) ? */ |
| 3418 | //-- |
| 3419 | //-- if (first_byte == 0xDA && second_byte >= 0xC0 && second_byte <= 0xDF) { |
| 3420 | //-- /* FCMOVB %st(n), %st(0) |
| 3421 | //-- FCMOVE %st(n), %st(0) |
| 3422 | //-- FCMOVBE %st(n), %st(0) |
| 3423 | //-- FCMOVU %st(n), %st(0) |
| 3424 | //-- */ |
| 3425 | //-- uses_ZCP = True; |
| 3426 | //-- } else |
| 3427 | //-- if (first_byte == 0xDB && second_byte >= 0xC0 && second_byte <= 0xDF) { |
| 3428 | //-- /* FCMOVNB %st(n), %st(0) |
| 3429 | //-- FCMOVNE %st(n), %st(0) |
| 3430 | //-- FCMOVNBE %st(n), %st(0) |
| 3431 | //-- FCMOVNU %st(n), %st(0) |
| 3432 | //-- */ |
| 3433 | //-- uses_ZCP = True; |
| 3434 | //-- } |
| 3435 | //-- |
| 3436 | //-- uInstr1(cb, FPU, 0, |
| 3437 | //-- Lit16, |
| 3438 | //-- (((UShort)first_byte) << 8) | ((UShort)second_byte) |
| 3439 | //-- ); |
| 3440 | //-- if (uses_ZCP) { |
| 3441 | //-- /* VG_(printf)("!!! --- FPU insn which reads %EFLAGS\n"); */ |
| 3442 | //-- uFlagsRWU(cb, FlagsZCP, FlagsEmpty, FlagsEmpty); |
| 3443 | //-- vg_assert(!sets_ZCP); |
| 3444 | //-- } |
| 3445 | //-- if (sets_ZCP) { |
| 3446 | //-- /* VG_(printf)("!!! --- FPU insn which writes %EFLAGS\n"); */ |
| 3447 | //-- uFlagsRWU(cb, FlagsEmpty, FlagsZCP, FlagsEmpty); |
| 3448 | //-- vg_assert(!uses_ZCP); |
| 3449 | //-- } |
| 3450 | //-- |
| 3451 | //-- DIP("fpu 0x%x:0x%x%s%s\n", (UInt)first_byte, (UInt)second_byte, |
| 3452 | //-- uses_ZCP ? " -rZCP" : "", |
| 3453 | //-- sets_ZCP ? " -wZCP" : "" ); |
| 3454 | //-- return eip; |
| 3455 | //-- } |
| 3456 | //-- |
| 3457 | //-- |
| 3458 | //-- /* Top-level handler for all FPU insns. On entry, eip points to the |
| 3459 | //-- second byte of the insn. */ |
| 3460 | //-- static |
| 3461 | //-- Addr dis_fpu ( UCodeBlock* cb, |
| 3462 | //-- UChar sorb, |
| 3463 | //-- UChar first_byte, Addr eip ) |
| 3464 | //-- { |
| 3465 | //-- const Bool rd = False; |
| 3466 | //-- const Bool wr = True; |
| 3467 | //-- UChar second_byte = getUChar(eip); |
| 3468 | //-- |
| 3469 | //-- /* Handle FSTSW %ax specially. */ |
| 3470 | //-- if (first_byte == 0xDF && second_byte == 0xE0) { |
| 3471 | //-- Int t1 = newTemp(cb); |
| 3472 | //-- uInstr0(cb, CALLM_S, 0); |
| 3473 | //-- uInstr2(cb, MOV, 4, Literal, 0, TempReg, t1); |
| 3474 | //-- uLiteral(cb, 0); |
| 3475 | //-- uInstr1(cb, PUSH, 4, TempReg, t1); |
| 3476 | //-- uInstr1(cb, CALLM, 0, Lit16, VGOFF_(helper_fstsw_AX) ); |
| 3477 | //-- uFlagsRWU(cb, FlagsEmpty, FlagsEmpty, FlagsEmpty); |
| 3478 | //-- uInstr1(cb, POP, 2, TempReg, t1); |
| 3479 | //-- uInstr2(cb, PUT, 2, TempReg, t1, ArchReg, R_EAX); |
| 3480 | //-- uInstr0(cb, CALLM_E, 0); |
| 3481 | //-- DIP("fstsw %%ax\n"); |
| 3482 | //-- eip++; |
| 3483 | //-- return eip; |
| 3484 | //-- } |
| 3485 | //-- |
| 3486 | //-- /* Handle all non-memory FPU ops simply. */ |
| 3487 | //-- if (second_byte >= 0xC0) |
| 3488 | //-- return dis_fpu_no_mem ( cb, eip, first_byte ); |
| 3489 | //-- |
| 3490 | //-- /* The insn references memory; need to determine |
| 3491 | //-- whether it reads or writes, and at what size. */ |
| 3492 | //-- switch (first_byte) { |
| 3493 | //-- |
| 3494 | //-- case 0xD8: |
| 3495 | //-- switch ((second_byte >> 3) & 7) { |
| 3496 | //-- case 0: /* FADDs */ |
| 3497 | //-- case 1: /* FMULs */ |
| 3498 | //-- case 2: /* FCOMs */ |
| 3499 | //-- case 3: /* FCOMPs */ |
| 3500 | //-- case 4: /* FSUBs */ |
| 3501 | //-- case 5: /* FSUBRs */ |
| 3502 | //-- case 6: /* FDIVs */ |
| 3503 | //-- case 7: /* FDIVRs */ |
| 3504 | //-- return dis_fpu_mem(cb, sorb, 4, rd, eip, first_byte); |
| 3505 | //-- default: |
| 3506 | //-- goto unhandled; |
| 3507 | //-- } |
| 3508 | //-- break; |
| 3509 | //-- |
| 3510 | //-- case 0xD9: |
| 3511 | //-- switch ((second_byte >> 3) & 7) { |
| 3512 | //-- case 0: /* FLDs */ |
| 3513 | //-- return dis_fpu_mem(cb, sorb, 4, rd, eip, first_byte); |
| 3514 | //-- case 2: /* FSTs */ |
| 3515 | //-- case 3: /* FSTPs */ |
| 3516 | //-- return dis_fpu_mem(cb, sorb, 4, wr, eip, first_byte); |
| 3517 | //-- case 4: /* FLDENV */ |
| 3518 | //-- return dis_fpu_mem(cb, sorb, 28, rd, eip, first_byte); |
| 3519 | //-- case 5: /* FLDCW */ |
| 3520 | //-- return dis_fpu_mem(cb, sorb, 2, rd, eip, first_byte); |
| 3521 | //-- case 6: /* FNSTENV */ |
| 3522 | //-- return dis_fpu_mem(cb, sorb, 28, wr, eip, first_byte); |
| 3523 | //-- case 7: /* FSTCW */ |
| 3524 | //-- /* HACK! FSTCW actually writes 2 bytes, not 4. glibc |
| 3525 | //-- gets lots of moaning in __floor() if we do the right |
| 3526 | //-- thing here. */ |
| 3527 | //-- /* Later ... hack disabled .. we do do the Right Thing. */ |
| 3528 | //-- return dis_fpu_mem(cb, sorb, /*4*/ 2, wr, eip, first_byte); |
| 3529 | //-- default: |
| 3530 | //-- goto unhandled; |
| 3531 | //-- } |
| 3532 | //-- break; |
| 3533 | //-- |
| 3534 | //-- case 0xDA: |
| 3535 | //-- switch ((second_byte >> 3) & 7) { |
| 3536 | //-- case 0: /* FIADD dword-integer */ |
| 3537 | //-- case 1: /* FIMUL dword-integer */ |
| 3538 | //-- case 2: /* FICOM dword-integer */ |
| 3539 | //-- case 3: /* FICOMP dword-integer */ |
| 3540 | //-- case 4: /* FISUB dword-integer */ |
| 3541 | //-- case 5: /* FISUBR dword-integer */ |
| 3542 | //-- case 6: /* FIDIV dword-integer */ |
| 3543 | //-- case 7: /* FIDIVR dword-integer */ |
| 3544 | //-- return dis_fpu_mem(cb, sorb, 4, rd, eip, first_byte); |
| 3545 | //-- default: |
| 3546 | //-- goto unhandled; |
| 3547 | //-- } |
| 3548 | //-- break; |
| 3549 | //-- |
| 3550 | //-- case 0xDB: |
| 3551 | //-- switch ((second_byte >> 3) & 7) { |
| 3552 | //-- case 0: /* FILD dword-integer */ |
| 3553 | //-- return dis_fpu_mem(cb, sorb, 4, rd, eip, first_byte); |
| 3554 | //-- case 2: /* FIST dword-integer */ |
| 3555 | //-- return dis_fpu_mem(cb, sorb, 4, wr, eip, first_byte); |
| 3556 | //-- case 3: /* FISTPl */ |
| 3557 | //-- return dis_fpu_mem(cb, sorb, 4, wr, eip, first_byte); |
| 3558 | //-- case 5: /* FLD extended-real */ |
| 3559 | //-- return dis_fpu_mem(cb, sorb, 10, rd, eip, first_byte); |
| 3560 | //-- case 7: /* FSTP extended-real */ |
| 3561 | //-- return dis_fpu_mem(cb, sorb, 10, wr, eip, first_byte); |
| 3562 | //-- default: |
| 3563 | //-- goto unhandled; |
| 3564 | //-- } |
| 3565 | //-- break; |
| 3566 | //-- |
| 3567 | //-- case 0xDC: |
| 3568 | //-- switch ((second_byte >> 3) & 7) { |
| 3569 | //-- case 0: /* FADD double-real */ |
| 3570 | //-- case 1: /* FMUL double-real */ |
| 3571 | //-- case 2: /* FCOM double-real */ |
| 3572 | //-- case 3: /* FCOMP double-real */ |
| 3573 | //-- case 4: /* FSUB double-real */ |
| 3574 | //-- case 5: /* FSUBR double-real */ |
| 3575 | //-- case 6: /* FDIV double-real */ |
| 3576 | //-- case 7: /* FDIVR double-real */ |
| 3577 | //-- return dis_fpu_mem(cb, sorb, 8, rd, eip, first_byte); |
| 3578 | //-- default: |
| 3579 | //-- goto unhandled; |
| 3580 | //-- } |
| 3581 | //-- break; |
| 3582 | //-- |
| 3583 | //-- case 0xDD: |
| 3584 | //-- switch ((second_byte >> 3) & 7) { |
| 3585 | //-- case 0: /* FLD double-real */ |
| 3586 | //-- return dis_fpu_mem(cb, sorb, 8, rd, eip, first_byte); |
| 3587 | //-- case 2: /* FST double-real */ |
| 3588 | //-- case 3: /* FSTP double-real */ |
| 3589 | //-- return dis_fpu_mem(cb, sorb, 8, wr, eip, first_byte); |
| 3590 | //-- case 4: /* FRSTOR */ |
| 3591 | //-- return dis_fpu_mem(cb, sorb, 108, rd, eip, first_byte); |
| 3592 | //-- case 6: /* FSAVE */ |
| 3593 | //-- return dis_fpu_mem(cb, sorb, 108, wr, eip, first_byte); |
| 3594 | //-- case 7: /* FSTSW */ |
| 3595 | //-- return dis_fpu_mem(cb, sorb, 2, wr, eip, first_byte); |
| 3596 | //-- default: |
| 3597 | //-- goto unhandled; |
| 3598 | //-- } |
| 3599 | //-- break; |
| 3600 | //-- |
| 3601 | //-- case 0xDE: |
| 3602 | //-- switch ((second_byte >> 3) & 7) { |
| 3603 | //-- case 0: /* FIADD word-integer */ |
| 3604 | //-- case 1: /* FIMUL word-integer */ |
| 3605 | //-- case 2: /* FICOM word-integer */ |
| 3606 | //-- case 3: /* FICOMP word-integer */ |
| 3607 | //-- case 4: /* FISUB word-integer */ |
| 3608 | //-- case 5: /* FISUBR word-integer */ |
| 3609 | //-- case 6: /* FIDIV word-integer */ |
| 3610 | //-- case 7: /* FIDIVR word-integer */ |
| 3611 | //-- return dis_fpu_mem(cb, sorb, 2, rd, eip, first_byte); |
| 3612 | //-- default: |
| 3613 | //-- goto unhandled; |
| 3614 | //-- } |
| 3615 | //-- break; |
| 3616 | //-- |
| 3617 | //-- case 0xDF: |
| 3618 | //-- switch ((second_byte >> 3) & 7) { |
| 3619 | //-- case 0: /* FILD word-integer */ |
| 3620 | //-- return dis_fpu_mem(cb, sorb, 2, rd, eip, first_byte); |
| 3621 | //-- case 2: /* FIST word-integer */ |
| 3622 | //-- return dis_fpu_mem(cb, sorb, 2, wr, eip, first_byte); |
| 3623 | //-- case 3: /* FISTP word-integer */ |
| 3624 | //-- return dis_fpu_mem(cb, sorb, 2, wr, eip, first_byte); |
| 3625 | //-- case 5: /* FILD qword-integer */ |
| 3626 | //-- return dis_fpu_mem(cb, sorb, 8, rd, eip, first_byte); |
| 3627 | //-- case 7: /* FISTP qword-integer */ |
| 3628 | //-- return dis_fpu_mem(cb, sorb, 8, wr, eip, first_byte); |
| 3629 | //-- default: |
| 3630 | //-- goto unhandled; |
| 3631 | //-- } |
| 3632 | //-- break; |
| 3633 | //-- |
| 3634 | //-- default: goto unhandled; |
| 3635 | //-- } |
| 3636 | //-- |
| 3637 | //-- unhandled: |
| 3638 | //-- VG_(printf)("dis_fpu: unhandled memory case 0x%2x:0x%2x(%d)\n", |
| 3639 | //-- (UInt)first_byte, (UInt)second_byte, |
| 3640 | //-- (UInt)((second_byte >> 3) & 7) ); |
| 3641 | //-- VG_(core_panic)("dis_fpu: unhandled opcodes"); |
| 3642 | //-- } |
sewardj | a06e556 | 2004-07-14 13:18:05 +0000 | [diff] [blame] | 3643 | |
| 3644 | |
| 3645 | /* Double length left and right shifts. Apparently only required in |
| 3646 | v-size (no b- variant). */ |
| 3647 | static |
| 3648 | UInt dis_SHLRD_Gv_Ev ( UChar sorb, |
| 3649 | UInt delta, UChar modrm, |
| 3650 | Int sz, |
| 3651 | IRExpr* shift_amt, |
| 3652 | Bool amt_is_literal, |
| 3653 | Char* shift_amt_txt, |
| 3654 | Bool left_shift ) |
| 3655 | { |
| 3656 | /* shift_amt :: Ity_I8 is the amount to shift. shift_amt_txt is used |
| 3657 | for printing it. And eip on entry points at the modrm byte. */ |
| 3658 | Int len; |
| 3659 | UChar dis_buf[50]; |
| 3660 | |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 3661 | IRType ty = szToITy(sz); |
| 3662 | IRTemp gsrc = newTemp(ty); |
| 3663 | IRTemp esrc = newTemp(ty); |
| 3664 | IRTemp addr = INVALID_IRTEMP; |
| 3665 | IRTemp tmpSH = newTemp(Ity_I8); |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 3666 | IRTemp tmpL = INVALID_IRTEMP; |
| 3667 | IRTemp tmpRes = INVALID_IRTEMP; |
sewardj | a06e556 | 2004-07-14 13:18:05 +0000 | [diff] [blame] | 3668 | IRTemp tmpSubSh = INVALID_IRTEMP; |
| 3669 | IROp mkpair; |
| 3670 | IROp getres; |
| 3671 | IROp shift; |
sewardj | a06e556 | 2004-07-14 13:18:05 +0000 | [diff] [blame] | 3672 | IRExpr* mask = NULL; |
| 3673 | |
| 3674 | vassert(sz == 2 || sz == 4); |
| 3675 | |
| 3676 | /* The E-part is the destination; this is shifted. The G-part |
| 3677 | supplies bits to be shifted into the E-part, but is not |
| 3678 | changed. |
| 3679 | |
| 3680 | If shifting left, form a double-length word with E at the top |
| 3681 | and G at the bottom, and shift this left. The result is then in |
| 3682 | the high part. |
| 3683 | |
| 3684 | If shifting right, form a double-length word with G at the top |
| 3685 | and E at the bottom, and shift this right. The result is then |
| 3686 | at the bottom. */ |
| 3687 | |
| 3688 | /* Fetch the operands. */ |
| 3689 | |
| 3690 | assign( gsrc, getIReg(sz, gregOfRM(modrm)) ); |
| 3691 | |
| 3692 | if (epartIsReg(modrm)) { |
| 3693 | delta++; |
| 3694 | assign( esrc, getIReg(sz, eregOfRM(modrm)) ); |
sewardj | 6851154 | 2004-07-28 00:15:44 +0000 | [diff] [blame] | 3695 | DIP("sh%cd%c %s, %s, %s\n", |
sewardj | a06e556 | 2004-07-14 13:18:05 +0000 | [diff] [blame] | 3696 | ( left_shift ? 'l' : 'r' ), nameISize(sz), |
sewardj | 6851154 | 2004-07-28 00:15:44 +0000 | [diff] [blame] | 3697 | shift_amt_txt, |
sewardj | a06e556 | 2004-07-14 13:18:05 +0000 | [diff] [blame] | 3698 | nameIReg(sz, gregOfRM(modrm)), nameIReg(sz, eregOfRM(modrm))); |
| 3699 | } else { |
| 3700 | addr = disAMode ( &len, sorb, delta, dis_buf ); |
| 3701 | delta += len; |
| 3702 | assign( esrc, loadLE(ty, mkexpr(addr)) ); |
sewardj | 6851154 | 2004-07-28 00:15:44 +0000 | [diff] [blame] | 3703 | DIP("sh%cd%c %s, %s, %s\n", |
| 3704 | ( left_shift ? 'l' : 'r' ), nameISize(sz), |
| 3705 | shift_amt_txt, |
| 3706 | nameIReg(sz, gregOfRM(modrm)), dis_buf); |
sewardj | a06e556 | 2004-07-14 13:18:05 +0000 | [diff] [blame] | 3707 | } |
| 3708 | |
| 3709 | /* Round up the relevant primops. */ |
| 3710 | |
| 3711 | if (sz == 4) { |
| 3712 | tmpL = newTemp(Ity_I64); |
| 3713 | tmpRes = newTemp(Ity_I32); |
| 3714 | tmpSubSh = newTemp(Ity_I32); |
sewardj | e539a40 | 2004-07-14 18:24:17 +0000 | [diff] [blame] | 3715 | mkpair = Iop_32HLto64; |
sewardj | 8c7f1ab | 2004-07-29 20:31:09 +0000 | [diff] [blame] | 3716 | getres = left_shift ? Iop_64HIto32 : Iop_64to32; |
sewardj | e539a40 | 2004-07-14 18:24:17 +0000 | [diff] [blame] | 3717 | shift = left_shift ? Iop_Shl64 : Iop_Shr64; |
| 3718 | mask = mkU8(31); |
sewardj | a06e556 | 2004-07-14 13:18:05 +0000 | [diff] [blame] | 3719 | } else { |
| 3720 | /* sz == 2 */ |
sewardj | 8c7f1ab | 2004-07-29 20:31:09 +0000 | [diff] [blame] | 3721 | tmpL = newTemp(Ity_I32); |
| 3722 | tmpRes = newTemp(Ity_I16); |
| 3723 | tmpSubSh = newTemp(Ity_I16); |
| 3724 | mkpair = Iop_16HLto32; |
| 3725 | getres = left_shift ? Iop_32HIto16 : Iop_32to16; |
| 3726 | shift = left_shift ? Iop_Shl32 : Iop_Shr32; |
| 3727 | mask = mkU8(15); |
sewardj | a06e556 | 2004-07-14 13:18:05 +0000 | [diff] [blame] | 3728 | } |
| 3729 | |
| 3730 | /* Do the shift, calculate the subshift value, and set |
| 3731 | the flag thunk. */ |
| 3732 | |
sewardj | 8c7f1ab | 2004-07-29 20:31:09 +0000 | [diff] [blame] | 3733 | assign( tmpSH, binop(Iop_And8, shift_amt, mask) ); |
| 3734 | |
sewardj | a06e556 | 2004-07-14 13:18:05 +0000 | [diff] [blame] | 3735 | if (left_shift) |
| 3736 | assign( tmpL, binop(mkpair, mkexpr(esrc), mkexpr(gsrc)) ); |
| 3737 | else |
| 3738 | assign( tmpL, binop(mkpair, mkexpr(gsrc), mkexpr(esrc)) ); |
| 3739 | |
| 3740 | assign( tmpRes, unop(getres, binop(shift, mkexpr(tmpL), mkexpr(tmpSH)) ) ); |
| 3741 | assign( tmpSubSh, |
| 3742 | unop(getres, |
| 3743 | binop(shift, |
| 3744 | mkexpr(tmpL), |
| 3745 | binop(Iop_And8, |
| 3746 | binop(Iop_Sub8, mkexpr(tmpSH), mkU8(1) ), |
| 3747 | mask))) ); |
sewardj | a06e556 | 2004-07-14 13:18:05 +0000 | [diff] [blame] | 3748 | |
sewardj | c22a6fd | 2004-07-29 23:41:47 +0000 | [diff] [blame] | 3749 | setFlags_DSTus_DST1 ( left_shift ? Iop_Shl32 : Iop_Sar32, |
sewardj | bb53f8c | 2004-08-14 11:50:01 +0000 | [diff] [blame] | 3750 | tmpSubSh, tmpRes, ty, tmpSH ); |
sewardj | a06e556 | 2004-07-14 13:18:05 +0000 | [diff] [blame] | 3751 | |
| 3752 | /* Put result back. */ |
| 3753 | |
| 3754 | if (epartIsReg(modrm)) { |
| 3755 | putIReg(sz, eregOfRM(modrm), mkexpr(tmpRes)); |
| 3756 | } else { |
| 3757 | storeLE( mkexpr(addr), mkexpr(tmpRes) ); |
| 3758 | } |
| 3759 | |
| 3760 | if (amt_is_literal) delta++; |
| 3761 | return delta; |
| 3762 | } |
| 3763 | |
| 3764 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 3765 | //-- /* Handle BT/BTS/BTR/BTC Gv, Ev. Apparently b-size is not |
| 3766 | //-- required. */ |
| 3767 | //-- |
| 3768 | //-- typedef enum { BtOpNone, BtOpSet, BtOpReset, BtOpComp } BtOp; |
| 3769 | //-- |
| 3770 | //-- static Char* nameBtOp ( BtOp op ) |
| 3771 | //-- { |
| 3772 | //-- switch (op) { |
| 3773 | //-- case BtOpNone: return ""; |
| 3774 | //-- case BtOpSet: return "s"; |
| 3775 | //-- case BtOpReset: return "r"; |
| 3776 | //-- case BtOpComp: return "c"; |
| 3777 | //-- default: VG_(core_panic)("nameBtOp"); |
| 3778 | //-- } |
| 3779 | //-- } |
| 3780 | //-- |
| 3781 | //-- |
| 3782 | //-- static |
| 3783 | //-- Addr dis_bt_G_E ( UCodeBlock* cb, |
| 3784 | //-- UChar sorb, |
| 3785 | //-- Int sz, Addr eip, BtOp op ) |
| 3786 | //-- { |
| 3787 | //-- UInt pair; |
| 3788 | //-- Char dis_buf[50]; |
| 3789 | //-- UChar modrm; |
| 3790 | //-- |
| 3791 | //-- Int t_addr, t_bitno, t_mask, t_fetched, t_esp, temp, lit; |
| 3792 | //-- |
| 3793 | //-- vg_assert(sz == 2 || sz == 4); |
| 3794 | //-- |
| 3795 | //-- t_addr = t_bitno = t_mask |
| 3796 | //-- = t_fetched = t_esp = temp = INVALID_TEMPREG; |
| 3797 | //-- |
| 3798 | //-- t_fetched = newTemp(cb); |
| 3799 | //-- t_bitno = newTemp(cb); |
| 3800 | //-- temp = newTemp(cb); |
| 3801 | //-- lit = newTemp(cb); |
| 3802 | //-- |
| 3803 | //-- modrm = getUChar(eip); |
| 3804 | //-- |
| 3805 | //-- uInstr2(cb, GET, sz, ArchReg, gregOfRM(modrm), TempReg, t_bitno); |
| 3806 | //-- |
| 3807 | //-- if (sz == 2) { |
| 3808 | //-- uInstr1(cb, WIDEN, 4, TempReg, t_bitno); |
| 3809 | //-- uWiden(cb, 2, False); |
| 3810 | //-- } |
| 3811 | //-- |
| 3812 | //-- if (epartIsReg(modrm)) { |
| 3813 | //-- eip++; |
| 3814 | //-- /* Get it onto the client's stack. */ |
| 3815 | //-- t_esp = newTemp(cb); |
| 3816 | //-- t_addr = newTemp(cb); |
| 3817 | //-- uInstr2(cb, GET, 4, ArchReg, R_ESP, TempReg, t_esp); |
| 3818 | //-- uInstr2(cb, SUB, 4, Literal, 0, TempReg, t_esp); |
| 3819 | //-- uLiteral(cb, sz); |
| 3820 | //-- uInstr2(cb, PUT, 4, TempReg, t_esp, ArchReg, R_ESP); |
| 3821 | //-- uInstr2(cb, GET, sz, ArchReg, eregOfRM(modrm), TempReg, temp); |
| 3822 | //-- uInstr2(cb, STORE, sz, TempReg, temp, TempReg, t_esp); |
| 3823 | //-- /* Make t_addr point at it. */ |
| 3824 | //-- uInstr2(cb, MOV, 4, TempReg, t_esp, TempReg, t_addr); |
| 3825 | //-- /* Mask out upper bits of the shift amount, since we're doing a |
| 3826 | //-- reg. */ |
| 3827 | //-- uInstr2(cb, MOV, 4, Literal, 0, TempReg, lit); |
| 3828 | //-- uLiteral(cb, sz == 4 ? 31 : 15); |
| 3829 | //-- uInstr2(cb, AND, 4, TempReg, lit, TempReg, t_bitno); |
| 3830 | //-- } else { |
| 3831 | //-- pair = disAMode ( cb, sorb, eip, dis_buf ); |
| 3832 | //-- t_addr = LOW24(pair); |
| 3833 | //-- eip += HI8(pair); |
| 3834 | //-- } |
| 3835 | //-- |
| 3836 | //-- /* At this point: t_addr points to the address being operated on. If |
| 3837 | //-- it was a reg, we will have pushed it onto the client's stack. |
| 3838 | //-- t_bitno is the bit number, suitable masked in the case of a reg. */ |
| 3839 | //-- |
| 3840 | //-- /* Now the main sequence. */ |
| 3841 | //-- |
| 3842 | //-- uInstr2(cb, MOV, 4, TempReg, t_bitno, TempReg, temp); |
| 3843 | //-- uInstr2(cb, SAR, 4, Literal, 0, TempReg, temp); |
| 3844 | //-- uLiteral(cb, 3); |
| 3845 | //-- uInstr2(cb, ADD, 4, TempReg, temp, TempReg, t_addr); |
| 3846 | //-- /* t_addr now holds effective address */ |
| 3847 | //-- |
| 3848 | //-- uInstr2(cb, MOV, 4, Literal, 0, TempReg, lit); |
| 3849 | //-- uLiteral(cb, 7); |
| 3850 | //-- uInstr2(cb, AND, 4, TempReg, lit, TempReg, t_bitno); |
| 3851 | //-- /* t_bitno contains offset of bit within byte */ |
| 3852 | //-- |
| 3853 | //-- if (op != BtOpNone) { |
| 3854 | //-- t_mask = newTemp(cb); |
| 3855 | //-- uInstr2(cb, MOV, 4, Literal, 0, TempReg, t_mask); |
| 3856 | //-- uLiteral(cb, 1); |
| 3857 | //-- uInstr2(cb, SHL, 4, TempReg, t_bitno, TempReg, t_mask); |
| 3858 | //-- } |
| 3859 | //-- /* t_mask is now a suitable byte mask */ |
| 3860 | //-- |
| 3861 | //-- uInstr2(cb, LOAD, 1, TempReg, t_addr, TempReg, t_fetched); |
| 3862 | //-- if (op != BtOpNone) { |
| 3863 | //-- uInstr2(cb, MOV, 4, TempReg, t_fetched, TempReg, temp); |
| 3864 | //-- switch (op) { |
| 3865 | //-- case BtOpSet: |
| 3866 | //-- uInstr2(cb, OR, 4, TempReg, t_mask, TempReg, temp); |
| 3867 | //-- break; |
| 3868 | //-- case BtOpComp: |
| 3869 | //-- uInstr2(cb, XOR, 4, TempReg, t_mask, TempReg, temp); |
| 3870 | //-- break; |
| 3871 | //-- case BtOpReset: |
| 3872 | //-- uInstr1(cb, NOT, 4, TempReg, t_mask); |
| 3873 | //-- uInstr2(cb, AND, 4, TempReg, t_mask, TempReg, temp); |
| 3874 | //-- break; |
| 3875 | //-- default: |
| 3876 | //-- VG_(core_panic)("dis_bt_G_E"); |
| 3877 | //-- } |
| 3878 | //-- uInstr2(cb, STORE, 1, TempReg, temp, TempReg, t_addr); |
| 3879 | //-- } |
| 3880 | //-- |
| 3881 | //-- /* Side effect done; now get selected bit into Carry flag */ |
| 3882 | //-- |
| 3883 | //-- uInstr2(cb, SHR, 4, TempReg, t_bitno, TempReg, t_fetched); |
| 3884 | //-- /* at bit 0 of fetched */ |
| 3885 | //-- |
| 3886 | //-- uInstr2(cb, MOV, 4, Literal, 0, TempReg, lit); |
| 3887 | //-- uLiteral(cb, 1); |
| 3888 | //-- uInstr2(cb, AND, 4, TempReg, lit, TempReg, t_fetched); |
| 3889 | //-- /* t_fetched is now 1 or 0 */ |
| 3890 | //-- |
| 3891 | //-- /* NEG is a handy way to convert zero/nonzero into the carry |
| 3892 | //-- flag. */ |
| 3893 | //-- uInstr1(cb, NEG, 4, TempReg, t_fetched); |
| 3894 | //-- setFlagsFromUOpcode(cb, NEG); |
| 3895 | //-- /* t_fetched is now in carry flag */ |
| 3896 | //-- |
| 3897 | //-- /* Move reg operand from stack back to reg */ |
| 3898 | //-- if (epartIsReg(modrm)) { |
| 3899 | //-- /* t_esp still points at it. */ |
| 3900 | //-- uInstr2(cb, LOAD, sz, TempReg, t_esp, TempReg, temp); |
| 3901 | //-- uInstr2(cb, PUT, sz, TempReg, temp, ArchReg, eregOfRM(modrm)); |
| 3902 | //-- uInstr2(cb, ADD, 4, Literal, 0, TempReg, t_esp); |
| 3903 | //-- uLiteral(cb, sz); |
| 3904 | //-- uInstr2(cb, PUT, 4, TempReg, t_esp, ArchReg, R_ESP); |
| 3905 | //-- } |
| 3906 | //-- |
| 3907 | //-- DIP("bt%s%c %s, %s\n", |
| 3908 | //-- nameBtOp(op), nameISize(sz), nameIReg(sz, gregOfRM(modrm)), |
| 3909 | //-- ( epartIsReg(modrm) ? nameIReg(sz, eregOfRM(modrm)) : dis_buf ) ); |
| 3910 | //-- |
| 3911 | //-- return eip; |
| 3912 | //-- } |
| 3913 | //-- |
| 3914 | //-- |
| 3915 | //-- |
| 3916 | //-- /* Handle BSF/BSR. Only v-size seems necessary. */ |
| 3917 | //-- static |
| 3918 | //-- Addr dis_bs_E_G ( UCodeBlock* cb, |
| 3919 | //-- UChar sorb, |
| 3920 | //-- Int sz, Addr eip, Bool fwds ) |
| 3921 | //-- { |
| 3922 | //-- Int t, t1, ta, helper; |
| 3923 | //-- UInt pair; |
| 3924 | //-- Char dis_buf[50]; |
| 3925 | //-- UChar modrm; |
| 3926 | //-- Bool isReg; |
| 3927 | //-- |
| 3928 | //-- vg_assert(sz == 2 || sz == 4); |
| 3929 | //-- |
| 3930 | //-- if (fwds) |
| 3931 | //-- helper = sz == 2 ? VGOFF_(helper_bsfw) : VGOFF_(helper_bsfl); |
| 3932 | //-- else |
| 3933 | //-- helper = sz == 2 ? VGOFF_(helper_bsrw) : VGOFF_(helper_bsrl); |
| 3934 | //-- |
| 3935 | //-- modrm = getUChar(eip); |
| 3936 | //-- t1 = newTemp(cb); |
| 3937 | //-- t = newTemp(cb); |
| 3938 | //-- |
| 3939 | //-- uInstr0(cb, CALLM_S, 0); |
| 3940 | //-- uInstr2(cb, GET, sz, ArchReg, gregOfRM(modrm), TempReg, t1); |
| 3941 | //-- uInstr1(cb, PUSH, sz, TempReg, t1); |
| 3942 | //-- |
| 3943 | //-- isReg = epartIsReg(modrm); |
| 3944 | //-- if (isReg) { |
| 3945 | //-- eip++; |
| 3946 | //-- uInstr2(cb, GET, sz, ArchReg, eregOfRM(modrm), TempReg, t); |
| 3947 | //-- } else { |
| 3948 | //-- pair = disAMode ( cb, sorb, eip, dis_buf ); |
| 3949 | //-- ta = LOW24(pair); |
| 3950 | //-- eip += HI8(pair); |
| 3951 | //-- uInstr2(cb, LOAD, sz, TempReg, ta, TempReg, t); |
| 3952 | //-- } |
| 3953 | //-- DIP("bs%c%c %s, %s\n", |
| 3954 | //-- fwds ? 'f' : 'r', nameISize(sz), |
| 3955 | //-- ( isReg ? nameIReg(sz, eregOfRM(modrm)) : dis_buf ), |
| 3956 | //-- nameIReg(sz, gregOfRM(modrm))); |
| 3957 | //-- |
| 3958 | //-- uInstr1(cb, PUSH, sz, TempReg, t); |
| 3959 | //-- uInstr1(cb, CALLM, 0, Lit16, helper); |
| 3960 | //-- uFlagsRWU(cb, FlagsEmpty, FlagZ, FlagsOSACP); |
| 3961 | //-- uInstr1(cb, POP, sz, TempReg, t); |
| 3962 | //-- uInstr1(cb, POP, sz, TempReg, t); |
| 3963 | //-- uInstr2(cb, PUT, sz, TempReg, t, ArchReg, gregOfRM(modrm)); |
| 3964 | //-- uInstr0(cb, CALLM_E, 0); |
| 3965 | //-- |
| 3966 | //-- return eip; |
| 3967 | //-- } |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 3968 | |
| 3969 | |
| 3970 | static |
| 3971 | void codegen_xchg_eAX_Reg ( Int sz, Int reg ) |
| 3972 | { |
| 3973 | IRType ty = szToITy(sz); |
| 3974 | IRTemp t1 = newTemp(ty); |
| 3975 | IRTemp t2 = newTemp(ty); |
| 3976 | vassert(sz == 2 || sz == 4); |
| 3977 | assign( t1, getIReg(sz, R_EAX) ); |
| 3978 | assign( t2, getIReg(sz, reg) ); |
| 3979 | putIReg( sz, R_EAX, mkexpr(t2) ); |
| 3980 | putIReg( sz, reg, mkexpr(t1) ); |
| 3981 | DIP("xchg%c %s, %s\n", |
| 3982 | nameISize(sz), nameIReg(sz, R_EAX), nameIReg(sz, reg)); |
| 3983 | } |
| 3984 | |
| 3985 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 3986 | //-- static |
| 3987 | //-- void codegen_SAHF ( UCodeBlock* cb ) |
| 3988 | //-- { |
| 3989 | //-- Int t = newTemp(cb); |
| 3990 | //-- Int t2 = newTemp(cb); |
| 3991 | //-- uInstr2(cb, GET, 4, ArchReg, R_EAX, TempReg, t); |
| 3992 | //-- |
| 3993 | //-- /* Mask out parts of t not corresponding to %AH. This stops the |
| 3994 | //-- instrumenter complaining if they are undefined. Otherwise, the |
| 3995 | //-- instrumenter would check all 32 bits of t at the PUSH, which |
| 3996 | //-- could be the cause of incorrect warnings. Discovered by Daniel |
| 3997 | //-- Veillard <veillard@redhat.com>. |
| 3998 | //-- */ |
| 3999 | //-- uInstr2(cb, MOV, 4, Literal, 0, TempReg, t2); |
| 4000 | //-- uLiteral(cb, 0x0000FF00); |
| 4001 | //-- uInstr2(cb, AND, 4, TempReg, t2, TempReg, t); |
| 4002 | //-- /* We deliberately don't set the condition codes here, since this |
| 4003 | //-- AND is purely internal to Valgrind and nothing to do with the |
| 4004 | //-- client's state. */ |
| 4005 | //-- |
| 4006 | //-- uInstr0(cb, CALLM_S, 0); |
| 4007 | //-- uInstr1(cb, PUSH, 4, TempReg, t); |
| 4008 | //-- uInstr1(cb, CALLM, 0, Lit16, VGOFF_(helper_SAHF)); |
| 4009 | //-- uFlagsRWU(cb, FlagsEmpty, FlagsSZACP, FlagsEmpty); |
| 4010 | //-- uInstr1(cb, CLEAR, 0, Lit16, 4); |
| 4011 | //-- uInstr0(cb, CALLM_E, 0); |
| 4012 | //-- } |
| 4013 | //-- |
| 4014 | //-- static |
| 4015 | //-- void codegen_LAHF ( UCodeBlock* cb ) |
| 4016 | //-- { |
| 4017 | //-- Int t = newTemp(cb); |
| 4018 | //-- |
| 4019 | //-- /* Pushed arg is ignored, it just provides somewhere to put the |
| 4020 | //-- return value. */ |
| 4021 | //-- uInstr2(cb, GET, 4, ArchReg, R_EAX, TempReg, t); |
| 4022 | //-- uInstr0(cb, CALLM_S, 0); |
| 4023 | //-- uInstr1(cb, PUSH, 4, TempReg, t); |
| 4024 | //-- uInstr1(cb, CALLM, 0, Lit16, VGOFF_(helper_LAHF)); |
| 4025 | //-- uFlagsRWU(cb, FlagsSZACP, FlagsEmpty, FlagsEmpty); |
| 4026 | //-- uInstr1(cb, POP, 4, TempReg, t); |
| 4027 | //-- uInstr0(cb, CALLM_E, 0); |
| 4028 | //-- |
| 4029 | //-- /* At this point, the %ah sub-register in %eax has been updated, |
| 4030 | //-- the rest is the same, so do a PUT of the whole thing. */ |
| 4031 | //-- uInstr2(cb, PUT, 4, TempReg, t, ArchReg, R_EAX); |
| 4032 | //-- } |
| 4033 | //-- |
| 4034 | //-- |
| 4035 | //-- static |
| 4036 | //-- Addr dis_cmpxchg_G_E ( UCodeBlock* cb, |
| 4037 | //-- UChar sorb, |
| 4038 | //-- Int size, |
| 4039 | //-- Addr eip0 ) |
| 4040 | //-- { |
| 4041 | //-- Int ta, junk, dest, src, acc; |
| 4042 | //-- UChar dis_buf[50]; |
| 4043 | //-- UChar rm; |
| 4044 | //-- |
| 4045 | //-- rm = getUChar(eip0); |
| 4046 | //-- acc = newTemp(cb); |
| 4047 | //-- src = newTemp(cb); |
| 4048 | //-- dest = newTemp(cb); |
| 4049 | //-- junk = newTemp(cb); |
| 4050 | //-- /* Only needed to get gcc's dataflow analyser off my back. */ |
| 4051 | //-- ta = INVALID_TEMPREG; |
| 4052 | //-- |
| 4053 | //-- if (epartIsReg(rm)) { |
| 4054 | //-- uInstr2(cb, GET, size, ArchReg, eregOfRM(rm), TempReg, dest); |
| 4055 | //-- eip0++; |
| 4056 | //-- DIP("cmpxchg%c %s,%s\n", nameISize(size), |
| 4057 | //-- nameIReg(size,gregOfRM(rm)), |
| 4058 | //-- nameIReg(size,eregOfRM(rm)) ); |
| 4059 | //-- } else { |
| 4060 | //-- UInt pair = disAMode ( cb, sorb, eip0, dis_buf ); |
| 4061 | //-- ta = LOW24(pair); |
| 4062 | //-- uInstr2(cb, LOAD, size, TempReg, ta, TempReg, dest); |
| 4063 | //-- eip0 += HI8(pair); |
| 4064 | //-- DIP("cmpxchg%c %s,%s\n", nameISize(size), |
| 4065 | //-- nameIReg(size,gregOfRM(rm)), dis_buf); |
| 4066 | //-- } |
| 4067 | //-- |
| 4068 | //-- uInstr2(cb, GET, size, ArchReg, gregOfRM(rm), TempReg, src); |
| 4069 | //-- uInstr2(cb, GET, size, ArchReg, R_EAX, TempReg, acc); |
| 4070 | //-- uInstr2(cb, MOV, 4, TempReg, acc, TempReg, junk); |
| 4071 | //-- uInstr2(cb, SUB, size, TempReg, dest, TempReg, junk); |
| 4072 | //-- setFlagsFromUOpcode(cb, SUB); |
| 4073 | //-- |
| 4074 | //-- uInstr2(cb, CMOV, 4, TempReg, src, TempReg, dest); |
| 4075 | //-- uCond(cb, CondZ); |
| 4076 | //-- uFlagsRWU(cb, FlagsOSZACP, FlagsEmpty, FlagsEmpty); |
| 4077 | //-- uInstr2(cb, CMOV, 4, TempReg, dest, TempReg, acc); |
| 4078 | //-- uCond(cb, CondNZ); |
| 4079 | //-- uFlagsRWU(cb, FlagsOSZACP, FlagsEmpty, FlagsEmpty); |
| 4080 | //-- |
| 4081 | //-- uInstr2(cb, PUT, size, TempReg, acc, ArchReg, R_EAX); |
| 4082 | //-- if (epartIsReg(rm)) { |
| 4083 | //-- uInstr2(cb, PUT, size, TempReg, dest, ArchReg, eregOfRM(rm)); |
| 4084 | //-- } else { |
| 4085 | //-- uInstr2(cb, STORE, size, TempReg, dest, TempReg, ta); |
| 4086 | //-- } |
| 4087 | //-- |
| 4088 | //-- return eip0; |
| 4089 | //-- } |
| 4090 | //-- |
| 4091 | //-- |
| 4092 | //-- static |
| 4093 | //-- Addr dis_cmpxchg8b ( UCodeBlock* cb, |
| 4094 | //-- UChar sorb, |
| 4095 | //-- Addr eip0 ) |
| 4096 | //-- { |
| 4097 | //-- Int tal, tah, junkl, junkh, destl, desth, srcl, srch, accl, acch; |
| 4098 | //-- UChar dis_buf[50]; |
| 4099 | //-- UChar rm; |
| 4100 | //-- UInt pair; |
| 4101 | //-- |
| 4102 | //-- rm = getUChar(eip0); |
| 4103 | //-- accl = newTemp(cb); |
| 4104 | //-- acch = newTemp(cb); |
| 4105 | //-- srcl = newTemp(cb); |
| 4106 | //-- srch = newTemp(cb); |
| 4107 | //-- destl = newTemp(cb); |
| 4108 | //-- desth = newTemp(cb); |
| 4109 | //-- junkl = newTemp(cb); |
| 4110 | //-- junkh = newTemp(cb); |
| 4111 | //-- |
| 4112 | //-- vg_assert(!epartIsReg(rm)); |
| 4113 | //-- |
| 4114 | //-- pair = disAMode ( cb, sorb, eip0, dis_buf ); |
| 4115 | //-- tal = LOW24(pair); |
| 4116 | //-- tah = newTemp(cb); |
| 4117 | //-- uInstr2(cb, MOV, 4, TempReg, tal, TempReg, tah); |
| 4118 | //-- uInstr2(cb, ADD, 4, Literal, 0, TempReg, tah); |
| 4119 | //-- uLiteral(cb, 4); |
| 4120 | //-- eip0 += HI8(pair); |
| 4121 | //-- DIP("cmpxchg8b %s\n", dis_buf); |
| 4122 | //-- |
| 4123 | //-- uInstr0(cb, CALLM_S, 0); |
| 4124 | //-- |
| 4125 | //-- uInstr2(cb, LOAD, 4, TempReg, tah, TempReg, desth); |
| 4126 | //-- uInstr1(cb, PUSH, 4, TempReg, desth); |
| 4127 | //-- uInstr2(cb, LOAD, 4, TempReg, tal, TempReg, destl); |
| 4128 | //-- uInstr1(cb, PUSH, 4, TempReg, destl); |
| 4129 | //-- uInstr2(cb, GET, 4, ArchReg, R_ECX, TempReg, srch); |
| 4130 | //-- uInstr1(cb, PUSH, 4, TempReg, srch); |
| 4131 | //-- uInstr2(cb, GET, 4, ArchReg, R_EBX, TempReg, srcl); |
| 4132 | //-- uInstr1(cb, PUSH, 4, TempReg, srcl); |
| 4133 | //-- uInstr2(cb, GET, 4, ArchReg, R_EDX, TempReg, acch); |
| 4134 | //-- uInstr1(cb, PUSH, 4, TempReg, acch); |
| 4135 | //-- uInstr2(cb, GET, 4, ArchReg, R_EAX, TempReg, accl); |
| 4136 | //-- uInstr1(cb, PUSH, 4, TempReg, accl); |
| 4137 | //-- |
| 4138 | //-- uInstr1(cb, CALLM, 0, Lit16, VGOFF_(helper_cmpxchg8b)); |
| 4139 | //-- uFlagsRWU(cb, FlagsEmpty, FlagZ, FlagsEmpty); |
| 4140 | //-- |
| 4141 | //-- uInstr1(cb, POP, 4, TempReg, accl); |
| 4142 | //-- uInstr2(cb, PUT, 4, TempReg, accl, ArchReg, R_EAX); |
| 4143 | //-- uInstr1(cb, POP, 4, TempReg, acch); |
| 4144 | //-- uInstr2(cb, PUT, 4, TempReg, acch, ArchReg, R_EDX); |
| 4145 | //-- uInstr1(cb, POP, 4, TempReg, srcl); |
| 4146 | //-- uInstr2(cb, PUT, 4, TempReg, srcl, ArchReg, R_EBX); |
| 4147 | //-- uInstr1(cb, POP, 4, TempReg, srch); |
| 4148 | //-- uInstr2(cb, PUT, 4, TempReg, srch, ArchReg, R_ECX); |
| 4149 | //-- uInstr1(cb, POP, 4, TempReg, destl); |
| 4150 | //-- uInstr2(cb, STORE, 4, TempReg, destl, TempReg, tal); |
| 4151 | //-- uInstr1(cb, POP, 4, TempReg, desth); |
| 4152 | //-- uInstr2(cb, STORE, 4, TempReg, desth, TempReg, tah); |
| 4153 | //-- |
| 4154 | //-- uInstr0(cb, CALLM_E, 0); |
| 4155 | //-- |
| 4156 | //-- return eip0; |
| 4157 | //-- } |
| 4158 | //-- |
| 4159 | //-- |
| 4160 | //-- /* Handle conditional move instructions of the form |
| 4161 | //-- cmovcc E(reg-or-mem), G(reg) |
| 4162 | //-- |
| 4163 | //-- E(src) is reg-or-mem |
| 4164 | //-- G(dst) is reg. |
| 4165 | //-- |
| 4166 | //-- If E is reg, --> GET %E, tmps |
| 4167 | //-- GET %G, tmpd |
| 4168 | //-- CMOVcc tmps, tmpd |
| 4169 | //-- PUT tmpd, %G |
| 4170 | //-- |
| 4171 | //-- If E is mem --> (getAddr E) -> tmpa |
| 4172 | //-- LD (tmpa), tmps |
| 4173 | //-- GET %G, tmpd |
| 4174 | //-- CMOVcc tmps, tmpd |
| 4175 | //-- PUT tmpd, %G |
| 4176 | //-- */ |
| 4177 | //-- static |
| 4178 | //-- Addr dis_cmov_E_G ( UCodeBlock* cb, |
| 4179 | //-- UChar sorb, |
| 4180 | //-- Int size, |
| 4181 | //-- Condcode cond, |
| 4182 | //-- Addr eip0 ) |
| 4183 | //-- { |
| 4184 | //-- UChar rm = getUChar(eip0); |
| 4185 | //-- UChar dis_buf[50]; |
| 4186 | //-- |
| 4187 | //-- Int tmps = newTemp(cb); |
| 4188 | //-- Int tmpd = newTemp(cb); |
| 4189 | //-- |
| 4190 | //-- if (epartIsReg(rm)) { |
| 4191 | //-- uInstr2(cb, GET, size, ArchReg, eregOfRM(rm), TempReg, tmps); |
| 4192 | //-- uInstr2(cb, GET, size, ArchReg, gregOfRM(rm), TempReg, tmpd); |
| 4193 | //-- uInstr2(cb, CMOV, 4, TempReg, tmps, TempReg, tmpd); |
| 4194 | //-- uCond(cb, cond); |
| 4195 | //-- uFlagsRWU(cb, FlagsOSZACP, FlagsEmpty, FlagsEmpty); |
| 4196 | //-- uInstr2(cb, PUT, size, TempReg, tmpd, ArchReg, gregOfRM(rm)); |
| 4197 | //-- DIP("cmov%c%s %s,%s\n", nameISize(size), |
| 4198 | //-- VG_(name_UCondcode)(cond), |
| 4199 | //-- nameIReg(size,eregOfRM(rm)), |
| 4200 | //-- nameIReg(size,gregOfRM(rm))); |
| 4201 | //-- return 1+eip0; |
| 4202 | //-- } |
| 4203 | //-- |
| 4204 | //-- /* E refers to memory */ |
| 4205 | //-- { |
| 4206 | //-- UInt pair = disAMode ( cb, sorb, eip0, dis_buf ); |
| 4207 | //-- Int tmpa = LOW24(pair); |
| 4208 | //-- uInstr2(cb, LOAD, size, TempReg, tmpa, TempReg, tmps); |
| 4209 | //-- uInstr2(cb, GET, size, ArchReg, gregOfRM(rm), TempReg, tmpd); |
| 4210 | //-- uInstr2(cb, CMOV, 4, TempReg, tmps, TempReg, tmpd); |
| 4211 | //-- uCond(cb, cond); |
| 4212 | //-- uFlagsRWU(cb, FlagsOSZACP, FlagsEmpty, FlagsEmpty); |
| 4213 | //-- uInstr2(cb, PUT, size, TempReg, tmpd, ArchReg, gregOfRM(rm)); |
| 4214 | //-- DIP("cmov%c%s %s,%s\n", nameISize(size), |
| 4215 | //-- VG_(name_UCondcode)(cond), |
| 4216 | //-- dis_buf, |
| 4217 | //-- nameIReg(size,gregOfRM(rm))); |
| 4218 | //-- return HI8(pair)+eip0; |
| 4219 | //-- } |
| 4220 | //-- } |
| 4221 | //-- |
| 4222 | //-- |
| 4223 | //-- static |
| 4224 | //-- Addr dis_xadd_G_E ( UCodeBlock* cb, |
| 4225 | //-- UChar sorb, |
| 4226 | //-- Int sz, |
| 4227 | //-- Addr eip0 ) |
| 4228 | //-- { |
| 4229 | //-- UChar rm = getUChar(eip0); |
| 4230 | //-- UChar dis_buf[50]; |
| 4231 | //-- |
| 4232 | //-- Int tmpd = newTemp(cb); |
| 4233 | //-- Int tmpt = newTemp(cb); |
| 4234 | //-- |
| 4235 | //-- if (epartIsReg(rm)) { |
| 4236 | //-- uInstr2(cb, GET, sz, ArchReg, eregOfRM(rm), TempReg, tmpd); |
| 4237 | //-- uInstr2(cb, GET, sz, ArchReg, gregOfRM(rm), TempReg, tmpt); |
| 4238 | //-- uInstr2(cb, ADD, sz, TempReg, tmpd, TempReg, tmpt); |
| 4239 | //-- setFlagsFromUOpcode(cb, ADD); |
| 4240 | //-- uInstr2(cb, PUT, sz, TempReg, tmpt, ArchReg, eregOfRM(rm)); |
| 4241 | //-- uInstr2(cb, PUT, sz, TempReg, tmpd, ArchReg, gregOfRM(rm)); |
| 4242 | //-- DIP("xadd%c %s, %s\n", |
| 4243 | //-- nameISize(sz), nameIReg(sz,gregOfRM(rm)), nameIReg(sz,eregOfRM(rm))); |
| 4244 | //-- return 1+eip0; |
| 4245 | //-- } else { |
| 4246 | //-- UInt pair = disAMode ( cb, sorb, eip0, dis_buf ); |
| 4247 | //-- Int tmpa = LOW24(pair); |
| 4248 | //-- uInstr2(cb, LOAD, sz, TempReg, tmpa, TempReg, tmpd); |
| 4249 | //-- uInstr2(cb, GET, sz, ArchReg, gregOfRM(rm), TempReg, tmpt); |
| 4250 | //-- uInstr2(cb, ADD, sz, TempReg, tmpd, TempReg, tmpt); |
| 4251 | //-- setFlagsFromUOpcode(cb, ADD); |
| 4252 | //-- uInstr2(cb, STORE, sz, TempReg, tmpt, TempReg, tmpa); |
| 4253 | //-- uInstr2(cb, PUT, sz, TempReg, tmpd, ArchReg, gregOfRM(rm)); |
| 4254 | //-- DIP("xadd%c %s, %s\n", |
| 4255 | //-- nameISize(sz), nameIReg(sz,gregOfRM(rm)), dis_buf); |
| 4256 | //-- return HI8(pair)+eip0; |
| 4257 | //-- } |
| 4258 | //-- } |
| 4259 | //-- |
| 4260 | //-- |
| 4261 | //-- /* Moves of Ew into a segment register. |
| 4262 | //-- mov Ew, Sw meaning |
| 4263 | //-- mov reg-or-mem, reg |
| 4264 | //-- Is passed the a ptr to the modRM byte, and the data size. Returns |
| 4265 | //-- the address advanced completely over this instruction. |
| 4266 | //-- |
| 4267 | //-- Ew(src) is reg-or-mem |
| 4268 | //-- Sw(dst) is seg reg. |
| 4269 | //-- |
| 4270 | //-- If E is reg, --> GETw %Ew, tmpv |
| 4271 | //-- PUTSEG tmpv, %Sw |
| 4272 | //-- |
| 4273 | //-- If E is mem --> (getAddr E) -> tmpa |
| 4274 | //-- LDw (tmpa), tmpb |
| 4275 | //-- PUTSEG tmpb, %Sw |
| 4276 | //-- */ |
| 4277 | //-- static |
| 4278 | //-- Addr dis_mov_Ew_Sw ( UCodeBlock* cb, |
| 4279 | //-- UChar sorb, |
| 4280 | //-- Addr eip0 ) |
| 4281 | //-- { |
| 4282 | //-- UChar rm = getUChar(eip0); |
| 4283 | //-- UChar dis_buf[50]; |
| 4284 | //-- |
| 4285 | //-- if (epartIsReg(rm)) { |
| 4286 | //-- Int tmpv = newTemp(cb); |
| 4287 | //-- uInstr2(cb, GET, 2, ArchReg, eregOfRM(rm), TempReg, tmpv); |
| 4288 | //-- uInstr2(cb, PUTSEG, 2, TempReg, tmpv, ArchRegS, gregOfRM(rm)); |
| 4289 | //-- DIP("movw %s,%s\n", nameIReg(2,eregOfRM(rm)), nameSReg(gregOfRM(rm))); |
| 4290 | //-- return 1+eip0; |
| 4291 | //-- } |
| 4292 | //-- |
| 4293 | //-- /* E refers to memory */ |
| 4294 | //-- { |
| 4295 | //-- UInt pair = disAMode ( cb, sorb, eip0, dis_buf ); |
| 4296 | //-- Int tmpa = LOW24(pair); |
| 4297 | //-- Int tmpb = newTemp(cb); |
| 4298 | //-- uInstr2(cb, LOAD, 2, TempReg, tmpa, TempReg, tmpb); |
| 4299 | //-- uInstr2(cb, PUTSEG, 2, TempReg, tmpb, ArchRegS, gregOfRM(rm)); |
| 4300 | //-- DIP("movw %s,%s\n", dis_buf,nameSReg(gregOfRM(rm))); |
| 4301 | //-- return HI8(pair)+eip0; |
| 4302 | //-- } |
| 4303 | //-- } |
| 4304 | //-- |
| 4305 | //-- |
| 4306 | //-- /* Moves of a segment register to Ew. |
| 4307 | //-- mov Sw, Ew meaning |
| 4308 | //-- mov reg, reg-or-mem |
| 4309 | //-- Is passed the a ptr to the modRM byte, and the data size. Returns |
| 4310 | //-- the address advanced completely over this instruction. |
| 4311 | //-- |
| 4312 | //-- Sw(src) is seg reg. |
| 4313 | //-- Ew(dst) is reg-or-mem |
| 4314 | //-- |
| 4315 | //-- If E is reg, --> GETSEG %Sw, tmp |
| 4316 | //-- PUTW tmp, %Ew |
| 4317 | //-- |
| 4318 | //-- If E is mem, --> (getAddr E) -> tmpa |
| 4319 | //-- GETSEG %Sw, tmpv |
| 4320 | //-- STW tmpv, (tmpa) |
| 4321 | //-- */ |
| 4322 | //-- static |
| 4323 | //-- Addr dis_mov_Sw_Ew ( UCodeBlock* cb, |
| 4324 | //-- UChar sorb, |
| 4325 | //-- Addr eip0 ) |
| 4326 | //-- { |
| 4327 | //-- UChar rm = getUChar(eip0); |
| 4328 | //-- UChar dis_buf[50]; |
| 4329 | //-- |
| 4330 | //-- if (epartIsReg(rm)) { |
| 4331 | //-- Int tmpv = newTemp(cb); |
| 4332 | //-- uInstr2(cb, GETSEG, 2, ArchRegS, gregOfRM(rm), TempReg, tmpv); |
| 4333 | //-- uInstr2(cb, PUT, 2, TempReg, tmpv, ArchReg, eregOfRM(rm)); |
| 4334 | //-- DIP("movw %s,%s\n", nameSReg(gregOfRM(rm)), nameIReg(2,eregOfRM(rm))); |
| 4335 | //-- return 1+eip0; |
| 4336 | //-- } |
| 4337 | //-- |
| 4338 | //-- /* E refers to memory */ |
| 4339 | //-- { |
| 4340 | //-- UInt pair = disAMode ( cb, sorb, eip0, dis_buf ); |
| 4341 | //-- Int tmpa = LOW24(pair); |
| 4342 | //-- Int tmpv = newTemp(cb); |
| 4343 | //-- uInstr2(cb, GETSEG, 2, ArchRegS, gregOfRM(rm), TempReg, tmpv); |
| 4344 | //-- uInstr2(cb, STORE, 2, TempReg, tmpv, TempReg, tmpa); |
| 4345 | //-- DIP("mov %s,%s\n", nameSReg(gregOfRM(rm)), dis_buf); |
| 4346 | //-- return HI8(pair)+eip0; |
| 4347 | //-- } |
| 4348 | //-- } |
| 4349 | //-- |
| 4350 | //-- |
| 4351 | //-- |
| 4352 | //-- /* Simple MMX operations, either |
| 4353 | //-- op (src)mmxreg, (dst)mmxreg |
| 4354 | //-- or |
| 4355 | //-- op (src)address, (dst)mmxreg |
| 4356 | //-- opc is the byte following the 0x0F prefix. |
| 4357 | //-- */ |
| 4358 | //-- static |
| 4359 | //-- Addr dis_MMXop_regmem_to_reg ( UCodeBlock* cb, |
| 4360 | //-- UChar sorb, |
| 4361 | //-- Addr eip, |
| 4362 | //-- UChar opc, |
| 4363 | //-- Char* name, |
| 4364 | //-- Bool show_granularity ) |
| 4365 | //-- { |
| 4366 | //-- Char dis_buf[50]; |
| 4367 | //-- UChar modrm = getUChar(eip); |
| 4368 | //-- Bool isReg = epartIsReg(modrm); |
| 4369 | //-- |
| 4370 | //-- if (isReg) { |
| 4371 | //-- eip++; |
| 4372 | //-- uInstr1(cb, MMX2, 0, |
| 4373 | //-- Lit16, |
| 4374 | //-- (((UShort)(opc)) << 8) | ((UShort)modrm) ); |
| 4375 | //-- } else { |
| 4376 | //-- UInt pair = disAMode ( cb, sorb, eip, dis_buf ); |
| 4377 | //-- Int tmpa = LOW24(pair); |
| 4378 | //-- eip += HI8(pair); |
| 4379 | //-- uInstr2(cb, MMX2_MemRd, 8, |
| 4380 | //-- Lit16, |
| 4381 | //-- (((UShort)(opc)) << 8) | ((UShort)modrm), |
| 4382 | //-- TempReg, tmpa); |
| 4383 | //-- } |
| 4384 | //-- |
| 4385 | //-- DIP("%s%s %s, %s\n", |
| 4386 | //-- name, show_granularity ? nameMMXGran(opc & 3) : (Char*)"", |
| 4387 | //-- ( isReg ? nameMMXReg(eregOfRM(modrm)) : dis_buf ), |
| 4388 | //-- nameMMXReg(gregOfRM(modrm)) ); |
| 4389 | //-- |
| 4390 | //-- return eip; |
| 4391 | //-- } |
| 4392 | //-- |
| 4393 | //-- |
| 4394 | //-- /* Simple MMX operations, either |
| 4395 | //-- op (src)mmxreg, (dst)mmxreg |
| 4396 | //-- or |
| 4397 | //-- op (src)address, (dst)mmxreg |
| 4398 | //-- opc is the byte following the 0x0F prefix. |
| 4399 | //-- */ |
| 4400 | //-- static |
| 4401 | //-- Addr dis_MMXop_regmem_to_reg_Imm8 ( UCodeBlock* cb, |
| 4402 | //-- UChar sorb, |
| 4403 | //-- Addr eip, |
| 4404 | //-- UChar opc, |
| 4405 | //-- Char* name, |
| 4406 | //-- Bool show_granularity ) |
| 4407 | //-- { |
| 4408 | //-- Char dis_buf[50]; |
| 4409 | //-- UChar modrm = getUChar(eip); |
| 4410 | //-- UChar imm8; |
| 4411 | //-- Bool isReg = epartIsReg(modrm); |
| 4412 | //-- |
| 4413 | //-- if (isReg) { |
| 4414 | //-- eip++; |
| 4415 | //-- imm8 = getUChar(eip); |
| 4416 | //-- eip++; |
| 4417 | //-- uInstr2(cb, MMX3, 0, |
| 4418 | //-- Lit16, |
| 4419 | //-- (((UShort)(opc)) << 8) | ((UShort)modrm), |
| 4420 | //-- Lit16, |
| 4421 | //-- ((UShort)imm8)); |
| 4422 | //-- } else { |
| 4423 | //-- UInt pair = disAMode ( cb, sorb, eip, dis_buf ); |
| 4424 | //-- Int tmpa = LOW24(pair); |
| 4425 | //-- eip += HI8(pair); |
| 4426 | //-- imm8 = getUChar(eip); |
| 4427 | //-- eip++; |
| 4428 | //-- uInstr3(cb, MMX2a1_MemRd, 8, |
| 4429 | //-- Lit16, |
| 4430 | //-- (((UShort)(opc)) << 8) | ((UShort)modrm), |
| 4431 | //-- Lit16, |
| 4432 | //-- ((UShort)imm8), |
| 4433 | //-- TempReg, tmpa); |
| 4434 | //-- } |
| 4435 | //-- |
| 4436 | //-- DIP("%s%s %s, %s, $%d\n", |
| 4437 | //-- name, show_granularity ? nameMMXGran(opc & 3) : (Char*)"", |
| 4438 | //-- ( isReg ? nameMMXReg(eregOfRM(modrm)) : dis_buf ), |
| 4439 | //-- nameMMXReg(gregOfRM(modrm)), (Int)imm8 ); |
| 4440 | //-- |
| 4441 | //-- return eip; |
| 4442 | //-- } |
| 4443 | //-- |
| 4444 | //-- |
| 4445 | //-- |
| 4446 | //-- /* Simple SSE operations, either |
| 4447 | //-- op (src)xmmreg, (dst)xmmreg |
| 4448 | //-- or |
| 4449 | //-- op (src)address, (dst)xmmreg |
| 4450 | //-- 3 opcode bytes. |
| 4451 | //-- Supplied eip points to the first address mode byte. |
| 4452 | //-- */ |
| 4453 | //-- static |
| 4454 | //-- Addr dis_SSE3_reg_or_mem ( UCodeBlock* cb, |
| 4455 | //-- UChar sorb, |
sewardj | bb53f8c | 2004-08-14 11:50:01 +0000 | [diff] [blame] | 4456 | //-- Addr eip, |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 4457 | //-- Int sz, |
| 4458 | //-- Char* name, |
| 4459 | //-- UChar opc1, |
| 4460 | //-- UChar opc2, |
| 4461 | //-- UChar opc3 ) |
| 4462 | //-- { |
| 4463 | //-- Char dis_buf[50]; |
| 4464 | //-- UChar modrm = getUChar(eip); |
| 4465 | //-- Bool isReg = epartIsReg(modrm); |
| 4466 | //-- |
| 4467 | //-- if (isReg) { |
| 4468 | //-- /* Completely internal SSE insn. */ |
| 4469 | //-- uInstr2(cb, SSE4, 0, /* ignore sz for internal ops */ |
| 4470 | //-- Lit16, (((UShort)opc1) << 8) | (UShort)opc2, |
| 4471 | //-- Lit16, (((UShort)opc3) << 8) | (UShort)modrm ); |
| 4472 | //-- eip++; |
| 4473 | //-- } else { |
| 4474 | //-- UInt pair = disAMode ( cb, sorb, eip, dis_buf ); |
| 4475 | //-- Int tmpa = LOW24(pair); |
| 4476 | //-- eip += HI8(pair); |
| 4477 | //-- uInstr3(cb, SSE3a_MemRd, sz, |
| 4478 | //-- Lit16, (((UShort)(opc1)) << 8) | ((UShort)opc2), |
| 4479 | //-- Lit16, (((UShort)(opc3)) << 8) | ((UShort)modrm), |
| 4480 | //-- TempReg, tmpa); |
| 4481 | //-- } |
| 4482 | //-- |
| 4483 | //-- DIP("%s %s, %s\n", |
| 4484 | //-- name, |
| 4485 | //-- ( isReg ? nameXMMReg(eregOfRM(modrm)) : dis_buf ), |
| 4486 | //-- nameXMMReg(gregOfRM(modrm)) ); |
| 4487 | //-- |
| 4488 | //-- return eip; |
| 4489 | //-- } |
| 4490 | //-- |
| 4491 | //-- |
| 4492 | //-- /* Simple SSE operations, either |
| 4493 | //-- op (src)xmmreg, (dst)xmmreg |
| 4494 | //-- or |
| 4495 | //-- op (src)address, (dst)xmmreg |
| 4496 | //-- 2 opcode bytes. |
| 4497 | //-- Supplied eip points to the first address mode byte. |
| 4498 | //-- */ |
| 4499 | //-- static |
| 4500 | //-- Addr dis_SSE2_reg_or_mem ( UCodeBlock* cb, |
| 4501 | //-- UChar sorb, |
| 4502 | //-- Addr eip, |
| 4503 | //-- Int sz, |
| 4504 | //-- Char* name, |
| 4505 | //-- UChar opc1, |
| 4506 | //-- UChar opc2 ) |
| 4507 | //-- { |
| 4508 | //-- Char dis_buf[50]; |
| 4509 | //-- UChar modrm = getUChar(eip); |
| 4510 | //-- Bool isReg = epartIsReg(modrm); |
| 4511 | //-- |
| 4512 | //-- if (isReg) { |
| 4513 | //-- /* Completely internal SSE insn. */ |
| 4514 | //-- uInstr2(cb, SSE3, 0, /* ignore sz for internal ops */ |
| 4515 | //-- Lit16, (((UShort)opc1) << 8) | (UShort)opc2, |
| 4516 | //-- Lit16, (UShort)modrm ); |
| 4517 | //-- eip++; |
| 4518 | //-- } else { |
| 4519 | //-- UInt pair = disAMode ( cb, sorb, eip, dis_buf ); |
| 4520 | //-- Int tmpa = LOW24(pair); |
| 4521 | //-- eip += HI8(pair); |
| 4522 | //-- uInstr3(cb, SSE2a_MemRd, sz, |
| 4523 | //-- Lit16, (((UShort)(opc1)) << 8) | ((UShort)opc2), |
| 4524 | //-- Lit16, (UShort)modrm, |
| 4525 | //-- TempReg, tmpa); |
| 4526 | //-- } |
| 4527 | //-- DIP("%s %s, %s\n", |
| 4528 | //-- name, |
| 4529 | //-- ( isReg ? nameXMMReg(eregOfRM(modrm)) : dis_buf ), |
| 4530 | //-- nameXMMReg(gregOfRM(modrm)) ); |
| 4531 | //-- |
| 4532 | //-- return eip; |
| 4533 | //-- } |
| 4534 | //-- |
| 4535 | //-- |
| 4536 | //-- /* Simple SSE operations, either |
| 4537 | //-- op (src)xmmreg, (dst)xmmreg |
| 4538 | //-- or |
| 4539 | //-- op (src)address, (dst)xmmreg |
| 4540 | //-- 2 opcode bytes and an 8-bit immediate after the amode. |
| 4541 | //-- Supplied eip points to the first address mode byte. |
| 4542 | //-- */ |
| 4543 | //-- static |
| 4544 | //-- Addr dis_SSE2_reg_or_mem_Imm8 ( UCodeBlock* cb, |
| 4545 | //-- UChar sorb, |
| 4546 | //-- Addr eip, |
| 4547 | //-- Int sz, |
| 4548 | //-- Char* name, |
| 4549 | //-- UChar opc1, |
| 4550 | //-- UChar opc2 ) |
| 4551 | //-- { |
| 4552 | //-- Char dis_buf[50]; |
| 4553 | //-- UChar modrm = getUChar(eip); |
| 4554 | //-- UChar imm8; |
| 4555 | //-- Bool isReg = epartIsReg(modrm); |
| 4556 | //-- |
| 4557 | //-- if (isReg) { |
| 4558 | //-- /* Completely internal SSE insn. */ |
| 4559 | //-- eip++; |
| 4560 | //-- imm8 = getUChar(eip); |
| 4561 | //-- uInstr2(cb, SSE4, 0, /* ignore sz for internal ops */ |
| 4562 | //-- Lit16, (((UShort)opc1) << 8) | (UShort)opc2, |
| 4563 | //-- Lit16, (((UShort)modrm) << 8) | (UShort)imm8 ); |
| 4564 | //-- eip++; |
| 4565 | //-- } else { |
| 4566 | //-- UInt pair = disAMode ( cb, sorb, eip, dis_buf ); |
| 4567 | //-- Int tmpa = LOW24(pair); |
| 4568 | //-- eip += HI8(pair); |
| 4569 | //-- imm8 = getUChar(eip); |
| 4570 | //-- eip++; |
| 4571 | //-- uInstr3(cb, SSE2a1_MemRd, sz, |
| 4572 | //-- Lit16, (((UShort)(opc1)) << 8) | ((UShort)opc2), |
| 4573 | //-- Lit16, (((UShort)(modrm)) << 8) | ((UShort)imm8), |
| 4574 | //-- TempReg, tmpa); |
| 4575 | //-- } |
| 4576 | //-- DIP("%s %s, %s, $%d\n", |
| 4577 | //-- name, ( isReg ? nameXMMReg(eregOfRM(modrm)) : dis_buf ), |
| 4578 | //-- nameXMMReg(gregOfRM(modrm)), (Int)imm8 ); |
| 4579 | //-- return eip; |
| 4580 | //-- } |
| 4581 | //-- |
| 4582 | //-- |
| 4583 | //-- /* Simple SSE operations, either |
| 4584 | //-- op (src)xmmreg, (dst)xmmreg |
| 4585 | //-- or |
| 4586 | //-- op (src)address, (dst)xmmreg |
| 4587 | //-- 3 opcode bytes and an 8-bit immediate after the amode. |
| 4588 | //-- Supplied eip points to the first address mode byte. |
| 4589 | //-- */ |
| 4590 | //-- static |
| 4591 | //-- Addr dis_SSE3_reg_or_mem_Imm8 ( UCodeBlock* cb, |
| 4592 | //-- UChar sorb, |
| 4593 | //-- Addr eip, |
| 4594 | //-- Int sz, |
| 4595 | //-- Char* name, |
| 4596 | //-- UChar opc1, |
| 4597 | //-- UChar opc2, |
| 4598 | //-- UChar opc3 ) |
| 4599 | //-- { |
| 4600 | //-- Char dis_buf[50]; |
| 4601 | //-- UChar modrm = getUChar(eip); |
| 4602 | //-- UChar imm8; |
| 4603 | //-- Bool isReg = epartIsReg(modrm); |
| 4604 | //-- |
| 4605 | //-- if (isReg) { |
| 4606 | //-- /* Completely internal SSE insn. */ |
| 4607 | //-- eip++; |
| 4608 | //-- imm8 = getUChar(eip); |
| 4609 | //-- uInstr3(cb, SSE5, 0, /* ignore sz for internal ops */ |
| 4610 | //-- Lit16, (((UShort)opc1) << 8) | (UShort)opc2, |
| 4611 | //-- Lit16, (((UShort)opc3) << 8) | (UShort)modrm, |
| 4612 | //-- Lit16, (UShort)imm8 ); |
| 4613 | //-- eip++; |
| 4614 | //-- } else { |
| 4615 | //-- UInt pair = disAMode ( cb, sorb, eip, dis_buf ); |
| 4616 | //-- Int tmpa = LOW24(pair); |
| 4617 | //-- eip += HI8(pair); |
| 4618 | //-- imm8 = getUChar(eip); |
| 4619 | //-- eip++; |
| 4620 | //-- uInstr3(cb, SSE3a1_MemRd, sz, |
| 4621 | //-- Lit16, (((UShort)(opc1)) << 8) | ((UShort)opc2), |
| 4622 | //-- Lit16, (((UShort)(opc3)) << 8) | ((UShort)modrm), |
| 4623 | //-- TempReg, tmpa); |
| 4624 | //-- uLiteral(cb, imm8); |
| 4625 | //-- } |
| 4626 | //-- DIP("%s %s, %s, $%d\n", |
| 4627 | //-- name, ( isReg ? nameXMMReg(eregOfRM(modrm)) : dis_buf ), |
| 4628 | //-- nameXMMReg(gregOfRM(modrm)), (Int)imm8 ); |
| 4629 | //-- return eip; |
| 4630 | //-- } |
| 4631 | //-- |
| 4632 | //-- |
| 4633 | //-- /* Disassemble an SSE insn which is either a simple reg-reg move or a |
| 4634 | //-- move between registers and memory. Supplied eip points to the |
| 4635 | //-- first address mode byte. |
| 4636 | //-- */ |
| 4637 | //-- static |
| 4638 | //-- Addr dis_SSE3_load_store_or_mov ( UCodeBlock* cb, |
| 4639 | //-- UChar sorb, |
| 4640 | //-- Addr eip, |
| 4641 | //-- Int sz, |
| 4642 | //-- Bool is_store, |
| 4643 | //-- Char* name, |
| 4644 | //-- UChar insn0, |
| 4645 | //-- UChar insn1, |
| 4646 | //-- UChar insn2 ) |
| 4647 | //-- { |
| 4648 | //-- Char dis_buf[50]; |
| 4649 | //-- UChar modrm = getUChar(eip); |
| 4650 | //-- Bool isReg = epartIsReg(modrm); |
| 4651 | //-- UInt pair; |
| 4652 | //-- Int t1; |
| 4653 | //-- |
| 4654 | //-- if (isReg) { |
| 4655 | //-- /* Completely internal; we can issue SSE4. */ |
| 4656 | //-- eip++; |
| 4657 | //-- uInstr2(cb, SSE4, 0, /* ignore sz for internal ops */ |
| 4658 | //-- Lit16, (((UShort)insn0) << 8) | (UShort)insn1, |
| 4659 | //-- Lit16, (((UShort)insn2) << 8) | (UShort)modrm ); |
| 4660 | //-- } else { |
| 4661 | //-- pair = disAMode ( cb, sorb, eip, dis_buf ); |
| 4662 | //-- t1 = LOW24(pair); |
| 4663 | //-- eip += HI8(pair); |
| 4664 | //-- uInstr3(cb, is_store ? SSE3a_MemWr : SSE3a_MemRd, sz, |
| 4665 | //-- Lit16, (((UShort)insn0) << 8) | (UShort)insn1, |
| 4666 | //-- Lit16, (((UShort)insn2) << 8) | (UShort)modrm, |
| 4667 | //-- TempReg, t1 ); |
| 4668 | //-- } |
| 4669 | //-- |
| 4670 | //-- if (is_store) { |
| 4671 | //-- DIP("%s %s, %s\n", |
| 4672 | //-- name, |
| 4673 | //-- nameXMMReg(gregOfRM(modrm)), |
| 4674 | //-- ( isReg ? nameXMMReg(eregOfRM(modrm)) : dis_buf ) ); |
| 4675 | //-- } else { |
| 4676 | //-- DIP("%s %s, %s\n", |
| 4677 | //-- name, |
| 4678 | //-- ( isReg ? nameXMMReg(eregOfRM(modrm)) : dis_buf ), |
| 4679 | //-- nameXMMReg(gregOfRM(modrm)) ); |
| 4680 | //-- } |
| 4681 | //-- return eip; |
| 4682 | //-- } |
| 4683 | //-- |
| 4684 | //-- |
| 4685 | //-- /* Disassemble an SSE insn which is either a simple reg-reg move or a |
| 4686 | //-- move between registers and memory. Supplied eip points to the |
| 4687 | //-- first address mode byte. */ |
| 4688 | //-- static |
| 4689 | //-- Addr dis_SSE2_load_store_or_mov ( UCodeBlock* cb, |
| 4690 | //-- UChar sorb, |
| 4691 | //-- Addr eip, |
| 4692 | //-- Int sz, |
| 4693 | //-- Bool is_store, |
| 4694 | //-- Char* name, |
| 4695 | //-- UChar insn0, |
| 4696 | //-- UChar insn1 ) |
| 4697 | //-- { |
| 4698 | //-- Char dis_buf[50]; |
| 4699 | //-- UChar modrm = getUChar(eip); |
| 4700 | //-- Bool isReg = epartIsReg(modrm); |
| 4701 | //-- UInt pair; |
| 4702 | //-- Int t1; |
| 4703 | //-- |
| 4704 | //-- if (isReg) { |
| 4705 | //-- /* Completely internal; we can issue SSE3. */ |
| 4706 | //-- eip++; |
| 4707 | //-- uInstr2(cb, SSE3, 0, /* ignore sz for internal ops */ |
| 4708 | //-- Lit16, (((UShort)insn0) << 8) | (UShort)insn1, |
| 4709 | //-- Lit16, (UShort)modrm ); |
| 4710 | //-- } else { |
| 4711 | //-- pair = disAMode ( cb, sorb, eip, dis_buf ); |
| 4712 | //-- t1 = LOW24(pair); |
| 4713 | //-- eip += HI8(pair); |
| 4714 | //-- uInstr3(cb, is_store ? SSE2a_MemWr : SSE2a_MemRd, sz, |
| 4715 | //-- Lit16, (((UShort)insn0) << 8) | (UShort)insn1, |
| 4716 | //-- Lit16, (UShort)modrm, |
| 4717 | //-- TempReg, t1 ); |
| 4718 | //-- } |
| 4719 | //-- |
| 4720 | //-- if (is_store) { |
| 4721 | //-- DIP("%s %s, %s\n", |
| 4722 | //-- name, |
| 4723 | //-- nameXMMReg(gregOfRM(modrm)), |
| 4724 | //-- ( isReg ? nameXMMReg(eregOfRM(modrm)) : dis_buf ) ); |
| 4725 | //-- } else { |
| 4726 | //-- DIP("%s %s, %s\n", |
| 4727 | //-- name, |
| 4728 | //-- ( isReg ? nameXMMReg(eregOfRM(modrm)) : dis_buf ), |
| 4729 | //-- nameXMMReg(gregOfRM(modrm)) ); |
| 4730 | //-- } |
| 4731 | //-- return eip; |
| 4732 | //-- } |
| 4733 | //-- |
| 4734 | //-- |
| 4735 | //-- /* Simple SSE operations, either |
| 4736 | //-- op (src)xmmreg, (dst)mmxreg |
| 4737 | //-- or |
| 4738 | //-- op (src)address, (dst)mmxreg |
| 4739 | //-- 2 opcode bytes. |
| 4740 | //-- Supplied eip points to the first address mode byte. |
| 4741 | //-- */ |
| 4742 | //-- static |
| 4743 | //-- Addr dis_SSE2_to_MMX ( UCodeBlock *cb, |
| 4744 | //-- UChar sorb, |
| 4745 | //-- Addr eip, |
| 4746 | //-- Int sz, |
| 4747 | //-- Char* name, |
| 4748 | //-- UChar opc1, |
| 4749 | //-- UChar opc2 ) |
| 4750 | //-- { |
| 4751 | //-- UChar dis_buf[50]; |
| 4752 | //-- UChar modrm = getUChar(eip); |
| 4753 | //-- if (epartIsReg(modrm)) { |
| 4754 | //-- /* Completely internal SSE insn. */ |
| 4755 | //-- uInstr2(cb, SSE3, 0, /* ignore sz for internal ops */ |
| 4756 | //-- Lit16, (((UShort)opc1) << 8) | (UShort)opc2, |
| 4757 | //-- Lit16, (UShort)modrm ); |
| 4758 | //-- DIP("%s %s, %s\n", |
| 4759 | //-- name, nameXMMReg(eregOfRM(modrm)), nameMMXReg(gregOfRM(modrm)) ); |
| 4760 | //-- eip++; |
| 4761 | //-- } else { |
| 4762 | //-- UInt pair = disAMode ( cb, sorb, eip, dis_buf ); |
| 4763 | //-- Int tmpa = LOW24(pair); |
| 4764 | //-- eip += HI8(pair); |
| 4765 | //-- uInstr3(cb, SSE2a_MemRd, sz, |
| 4766 | //-- Lit16, (((UShort)(opc1)) << 8) | ((UShort)opc2), |
| 4767 | //-- Lit16, ((UShort)modrm), |
| 4768 | //-- TempReg, tmpa); |
| 4769 | //-- DIP("%s %s, %s\n", name, dis_buf, nameMMXReg(gregOfRM(modrm))); |
| 4770 | //-- } |
| 4771 | //-- return eip; |
| 4772 | //-- } |
| 4773 | //-- |
| 4774 | //-- |
| 4775 | //-- /* Simple SSE operations, either |
| 4776 | //-- op (src)mmxreg, (dst)xmmreg |
| 4777 | //-- or |
| 4778 | //-- op (src)address, (dst)xmmreg |
| 4779 | //-- 2 opcode bytes. |
| 4780 | //-- Supplied eip points to the first address mode byte. |
| 4781 | //-- */ |
| 4782 | //-- static |
| 4783 | //-- Addr dis_SSE2_from_MMX ( UCodeBlock *cb, |
| 4784 | //-- UChar sorb, |
| 4785 | //-- Addr eip, |
| 4786 | //-- Int sz, |
| 4787 | //-- Char* name, |
| 4788 | //-- UChar opc1, |
| 4789 | //-- UChar opc2 ) |
| 4790 | //-- { |
| 4791 | //-- UChar dis_buf[50]; |
| 4792 | //-- UChar modrm = getUChar(eip); |
| 4793 | //-- if (epartIsReg(modrm)) { |
| 4794 | //-- /* Completely internal SSE insn. */ |
| 4795 | //-- uInstr2(cb, SSE3, 0, /* ignore sz for internal ops */ |
| 4796 | //-- Lit16, (((UShort)opc1) << 8) | (UShort)opc2, |
| 4797 | //-- Lit16, (UShort)modrm ); |
| 4798 | //-- DIP("%s %s, %s\n", |
| 4799 | //-- name, nameMMXReg(eregOfRM(modrm)), nameXMMReg(gregOfRM(modrm)) ); |
| 4800 | //-- eip++; |
| 4801 | //-- } else { |
| 4802 | //-- UInt pair = disAMode ( cb, sorb, eip, dis_buf ); |
| 4803 | //-- Int tmpa = LOW24(pair); |
| 4804 | //-- eip += HI8(pair); |
| 4805 | //-- uInstr3(cb, SSE2a_MemRd, sz, |
| 4806 | //-- Lit16, (((UShort)(opc1)) << 8) | ((UShort)opc2), |
| 4807 | //-- Lit16, ((UShort)modrm), |
| 4808 | //-- TempReg, tmpa); |
| 4809 | //-- DIP("%s %s, %s\n", name, dis_buf, nameXMMReg(gregOfRM(modrm))); |
| 4810 | //-- } |
| 4811 | //-- return eip; |
| 4812 | //-- } |
| 4813 | //-- |
| 4814 | //-- |
| 4815 | //-- /* Simple SSE operations, either |
| 4816 | //-- op (src)xmmreg, (dst)mmxreg |
| 4817 | //-- or |
| 4818 | //-- op (src)address, (dst)mmxreg |
| 4819 | //-- 3 opcode bytes. |
| 4820 | //-- Supplied eip points to the first address mode byte. |
| 4821 | //-- */ |
| 4822 | //-- static |
| 4823 | //-- Addr dis_SSE3_to_MMX ( UCodeBlock *cb, |
| 4824 | //-- UChar sorb, |
| 4825 | //-- Addr eip, |
| 4826 | //-- Int sz, |
| 4827 | //-- Char* name, |
| 4828 | //-- UChar opc1, |
| 4829 | //-- UChar opc2, |
| 4830 | //-- UChar opc3 ) |
| 4831 | //-- { |
| 4832 | //-- UChar dis_buf[50]; |
| 4833 | //-- UChar modrm = getUChar(eip); |
| 4834 | //-- if (epartIsReg(modrm)) { |
| 4835 | //-- /* Completely internal SSE insn. */ |
| 4836 | //-- uInstr2(cb, SSE4, 0, /* ignore sz for internal ops */ |
| 4837 | //-- Lit16, (((UShort)opc1) << 8) | (UShort)opc2, |
| 4838 | //-- Lit16, (((UShort)opc3) << 8) | (UShort)modrm ); |
| 4839 | //-- DIP("%s %s, %s\n", |
| 4840 | //-- name, nameXMMReg(eregOfRM(modrm)), nameMMXReg(gregOfRM(modrm)) ); |
| 4841 | //-- eip++; |
| 4842 | //-- } else { |
| 4843 | //-- UInt pair = disAMode ( cb, sorb, eip, dis_buf ); |
| 4844 | //-- Int tmpa = LOW24(pair); |
| 4845 | //-- eip += HI8(pair); |
| 4846 | //-- uInstr3(cb, SSE3a_MemRd, sz, |
| 4847 | //-- Lit16, (((UShort)(opc1)) << 8) | ((UShort)opc2), |
| 4848 | //-- Lit16, (((UShort)(opc3)) << 8) | ((UShort)modrm), |
| 4849 | //-- TempReg, tmpa); |
| 4850 | //-- DIP("%s %s, %s\n", name, dis_buf, nameMMXReg(gregOfRM(modrm))); |
| 4851 | //-- } |
| 4852 | //-- return eip; |
| 4853 | //-- } |
| 4854 | //-- |
| 4855 | //-- |
| 4856 | //-- /* Simple SSE operations, either |
| 4857 | //-- op (src)mmxreg, (dst)xmmreg |
| 4858 | //-- or |
| 4859 | //-- op (src)address, (dst)xmmreg |
| 4860 | //-- 3 opcode bytes. |
| 4861 | //-- Supplied eip points to the first address mode byte. |
| 4862 | //-- */ |
| 4863 | //-- static |
| 4864 | //-- Addr dis_SSE3_from_MMX ( UCodeBlock *cb, |
| 4865 | //-- UChar sorb, |
| 4866 | //-- Addr eip, |
| 4867 | //-- Int sz, |
| 4868 | //-- Char* name, |
| 4869 | //-- UChar opc1, |
| 4870 | //-- UChar opc2, |
| 4871 | //-- UChar opc3 ) |
| 4872 | //-- { |
| 4873 | //-- UChar dis_buf[50]; |
| 4874 | //-- UChar modrm = getUChar(eip); |
| 4875 | //-- if (epartIsReg(modrm)) { |
| 4876 | //-- /* Completely internal SSE insn. */ |
| 4877 | //-- uInstr2(cb, SSE4, 0, /* ignore sz for internal ops */ |
| 4878 | //-- Lit16, (((UShort)opc1) << 8) | (UShort)opc2, |
| 4879 | //-- Lit16, (((UShort)opc3) << 8) | (UShort)modrm ); |
| 4880 | //-- DIP("%s %s, %s\n", |
| 4881 | //-- name, nameMMXReg(eregOfRM(modrm)), nameXMMReg(gregOfRM(modrm)) ); |
| 4882 | //-- eip++; |
| 4883 | //-- } else { |
| 4884 | //-- UInt pair = disAMode ( cb, sorb, eip, dis_buf ); |
| 4885 | //-- Int tmpa = LOW24(pair); |
| 4886 | //-- eip += HI8(pair); |
| 4887 | //-- uInstr3(cb, SSE3a_MemRd, sz, |
| 4888 | //-- Lit16, (((UShort)(opc1)) << 8) | ((UShort)opc2), |
| 4889 | //-- Lit16, (((UShort)(opc3)) << 8) | ((UShort)modrm), |
| 4890 | //-- TempReg, tmpa); |
| 4891 | //-- DIP("%s %s, %s\n", name, dis_buf, nameXMMReg(gregOfRM(modrm))); |
| 4892 | //-- } |
| 4893 | //-- return eip; |
| 4894 | //-- } |
| 4895 | //-- |
| 4896 | //-- |
| 4897 | //-- static |
| 4898 | //-- void dis_push_segreg ( UCodeBlock* cb, UInt sreg, Int sz ) |
| 4899 | //-- { |
| 4900 | //-- Int t1 = newTemp(cb), t2 = newTemp(cb); |
| 4901 | //-- vg_assert(sz == 2 || sz == 4); |
| 4902 | //-- uInstr2(cb, GETSEG, 2, ArchRegS, sreg, TempReg, t1); |
| 4903 | //-- uInstr2(cb, GET, 4, ArchReg, R_ESP, TempReg, t2); |
| 4904 | //-- uInstr2(cb, SUB, 4, Literal, 0, TempReg, t2); |
| 4905 | //-- uLiteral(cb, sz); |
| 4906 | //-- uInstr2(cb, PUT, 4, TempReg, t2, ArchReg, R_ESP); |
| 4907 | //-- uInstr2(cb, STORE, 2, TempReg, t1, TempReg, t2); |
| 4908 | //-- DIP("push %s\n", VG_(name_of_seg_reg)(sreg)); |
| 4909 | //-- } |
| 4910 | //-- |
| 4911 | //-- static |
| 4912 | //-- void dis_pop_segreg ( UCodeBlock* cb, UInt sreg, Int sz ) |
| 4913 | //-- { |
| 4914 | //-- Int t1 = newTemp(cb), t2 = newTemp(cb); |
| 4915 | //-- vg_assert(sz == 2 || sz == 4); |
| 4916 | //-- uInstr2(cb, GET, 4, ArchReg, R_ESP, TempReg, t2); |
| 4917 | //-- uInstr2(cb, LOAD, 2, TempReg, t2, TempReg, t1); |
| 4918 | //-- uInstr2(cb, ADD, 4, Literal, 0, TempReg, t2); |
| 4919 | //-- uLiteral(cb, sz); |
| 4920 | //-- uInstr2(cb, PUT, 4, TempReg, t2, ArchReg, R_ESP); |
| 4921 | //-- uInstr2(cb, PUTSEG, 2, TempReg, t1, ArchRegS, sreg); |
| 4922 | //-- DIP("pop %s\n", VG_(name_of_seg_reg)(sreg)); |
| 4923 | //-- } |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 4924 | |
| 4925 | static |
| 4926 | void dis_ret ( UInt d32 ) |
| 4927 | { |
| 4928 | IRTemp t1 = newTemp(Ity_I32), t2 = newTemp(Ity_I32); |
| 4929 | assign(t1, getIReg(4,R_ESP)); |
| 4930 | assign(t2, loadLE(Ity_I32,mkexpr(t1))); |
| 4931 | putIReg(4, R_ESP,binop(Iop_Add32, mkexpr(t1), mkU32(4+d32))); |
sewardj | 78c19df | 2004-07-12 22:49:27 +0000 | [diff] [blame] | 4932 | jmp_treg(Ijk_Ret,t2); |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 4933 | } |
| 4934 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 4935 | |
| 4936 | /*------------------------------------------------------------*/ |
| 4937 | /*--- Disassembling entire basic blocks ---*/ |
| 4938 | /*------------------------------------------------------------*/ |
| 4939 | |
| 4940 | /* Disassemble a single instruction into IR, returning the updated |
| 4941 | delta, and setting *isEnd to True if this is the last insn in a |
| 4942 | basic block. Also do debug printing if necessary. */ |
| 4943 | |
| 4944 | static UInt disInstr ( UInt delta, Bool* isEnd ) |
| 4945 | { |
sewardj | 0c12ea8 | 2004-07-12 08:18:16 +0000 | [diff] [blame] | 4946 | IRType ty; |
| 4947 | IRTemp addr, t1, t2; |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 4948 | Int alen; |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 4949 | UChar opc, modrm, abyte; |
| 4950 | UInt d32; |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 4951 | UChar dis_buf[50]; |
| 4952 | Int am_sz, d_sz; |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 4953 | //Char loc_buf[M_VG_ERRTXT]; |
| 4954 | |
| 4955 | /* Holds eip at the start of the insn, so that we can print |
| 4956 | consistent error messages for unimplemented insns. */ |
| 4957 | UInt delta_start = delta; |
| 4958 | |
| 4959 | /* sz denotes the nominal data-op size of the insn; we change it to |
| 4960 | 2 if an 0x66 prefix is seen */ |
| 4961 | Int sz = 4; |
| 4962 | |
| 4963 | /* sorb holds the segment-override-prefix byte, if any. Zero if no |
| 4964 | prefix has been seen, else one of {0x26, 0x3E, 0x64, 0x65} |
| 4965 | indicating the prefix. */ |
| 4966 | UChar sorb = 0; |
| 4967 | |
| 4968 | /* For printing the stmts after each insn. */ |
sewardj | d7cb853 | 2004-08-17 23:59:23 +0000 | [diff] [blame] | 4969 | Int first_stmt_idx = irbb->stmts_used; |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 4970 | |
| 4971 | *isEnd = False; |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 4972 | addr = t1 = t2 = INVALID_IRTEMP; |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 4973 | //t3 = t4 = INVALID_IRTEMP; |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 4974 | |
| 4975 | DIP("\t0x%x: ", guest_eip+delta); |
| 4976 | |
sewardj | 750f407 | 2004-07-26 22:39:11 +0000 | [diff] [blame] | 4977 | /* Spot the client-request magic sequence. */ |
| 4978 | { |
| 4979 | UChar* code = (UChar*)(guest_code + delta); |
| 4980 | /* Spot this: |
| 4981 | C1C01D roll $29, %eax |
| 4982 | C1C003 roll $3, %eax |
| 4983 | C1C81B rorl $27, %eax |
| 4984 | C1C805 rorl $5, %eax |
| 4985 | C1C00D roll $13, %eax |
| 4986 | C1C013 roll $19, %eax |
| 4987 | */ |
| 4988 | if (code[ 0] == 0xC1 && code[ 1] == 0xC0 && code[ 2] == 0x1D && |
| 4989 | code[ 3] == 0xC1 && code[ 4] == 0xC0 && code[ 5] == 0x03 && |
| 4990 | code[ 6] == 0xC1 && code[ 7] == 0xC8 && code[ 8] == 0x1B && |
| 4991 | code[ 9] == 0xC1 && code[10] == 0xC8 && code[11] == 0x05 && |
| 4992 | code[12] == 0xC1 && code[13] == 0xC0 && code[14] == 0x0D && |
| 4993 | code[15] == 0xC1 && code[16] == 0xC0 && code[17] == 0x13 |
| 4994 | ) { |
| 4995 | delta += 18; |
| 4996 | jmp_lit(Ijk_ClientReq, guest_eip+delta); |
| 4997 | *isEnd = True; |
| 4998 | DIP("%%edx = client_request ( %%eax )\n"); |
| 4999 | return delta; |
| 5000 | } |
| 5001 | } |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 5002 | |
| 5003 | /* Skip a LOCK prefix. */ |
| 5004 | if (getIByte(delta) == 0xF0) { |
| 5005 | /* VG_(printf)("LOCK LOCK LOCK LOCK LOCK \n"); */ |
| 5006 | vpanic("x86 LOCK. what to do?"); |
| 5007 | delta++; |
| 5008 | } |
| 5009 | |
| 5010 | /* Detect operand-size overrides. */ |
| 5011 | if (getIByte(delta) == 0x66) { sz = 2; delta++; }; |
| 5012 | |
| 5013 | /* segment override prefixes come after the operand-size override, |
| 5014 | it seems */ |
| 5015 | switch (getIByte(delta)) { |
| 5016 | case 0x3E: /* %DS: */ |
| 5017 | case 0x26: /* %ES: */ |
| 5018 | case 0x64: /* %FS: */ |
| 5019 | case 0x65: /* %GS: */ |
| 5020 | sorb = getIByte(delta); delta++; |
| 5021 | break; |
| 5022 | case 0x2E: /* %CS: */ |
| 5023 | /* 2E prefix on a conditional branch instruction is a |
| 5024 | branch-prediction hint, which can safely be ignored. */ |
| 5025 | { |
| 5026 | UChar op1 = getIByte(delta+1); |
| 5027 | UChar op2 = getIByte(delta+2); |
| 5028 | if ((op1 >= 0x70 && op1 <= 0x7F) |
| 5029 | || (op1 == 0xE3) |
| 5030 | || (op1 == 0x0F && op2 >= 0x80 && op2 <= 0x8F)) { |
| 5031 | sorb = getIByte(delta); delta++; |
| 5032 | break; |
| 5033 | } |
| 5034 | } |
| 5035 | unimplemented("x86 segment override (SEG=CS) prefix"); |
| 5036 | /*NOTREACHED*/ |
| 5037 | break; |
| 5038 | case 0x36: /* %SS: */ |
| 5039 | unimplemented("x86 segment override (SEG=SS) prefix"); |
| 5040 | /*NOTREACHED*/ |
| 5041 | break; |
| 5042 | default: |
| 5043 | break; |
| 5044 | } |
| 5045 | |
| 5046 | //-- /* ---------------------------------------------------- */ |
| 5047 | //-- /* --- The SSE/SSE2 decoder. --- */ |
| 5048 | //-- /* ---------------------------------------------------- */ |
| 5049 | //-- |
| 5050 | //-- /* If it looks like this CPU might support SSE, try decoding SSE |
| 5051 | //-- insns. */ |
| 5052 | //-- if (VG_(have_ssestate)) { |
| 5053 | //-- UChar* insn = (UChar*)eip; |
| 5054 | //-- |
| 5055 | //-- /* FXSAVE/FXRSTOR m32 -- load/store the FPU/MMX/SSE state. */ |
| 5056 | //-- if (insn[0] == 0x0F && insn[1] == 0xAE |
| 5057 | //-- && (!epartIsReg(insn[2])) |
| 5058 | //-- && (gregOfRM(insn[2]) == 1 || gregOfRM(insn[2]) == 0) ) { |
| 5059 | //-- Bool store = gregOfRM(insn[2]) == 0; |
| 5060 | //-- vg_assert(sz == 4); |
| 5061 | //-- pair = disAMode ( cb, sorb, eip+2, dis_buf ); |
| 5062 | //-- t1 = LOW24(pair); |
| 5063 | //-- eip += 2+HI8(pair); |
| 5064 | //-- uInstr3(cb, store ? SSE2a_MemWr : SSE2a_MemRd, 512, |
| 5065 | //-- Lit16, (((UShort)insn[0]) << 8) | (UShort)insn[1], |
| 5066 | //-- Lit16, (UShort)insn[2], |
| 5067 | //-- TempReg, t1 ); |
| 5068 | //-- DIP("fx%s %s\n", store ? "save" : "rstor", dis_buf ); |
| 5069 | //-- goto decode_success; |
| 5070 | //-- } |
| 5071 | //-- |
| 5072 | //-- /* STMXCSR/LDMXCSR m32 -- load/store the MXCSR register. */ |
| 5073 | //-- if (insn[0] == 0x0F && insn[1] == 0xAE |
| 5074 | //-- && (!epartIsReg(insn[2])) |
| 5075 | //-- && (gregOfRM(insn[2]) == 3 || gregOfRM(insn[2]) == 2) ) { |
| 5076 | //-- Bool store = gregOfRM(insn[2]) == 3; |
| 5077 | //-- vg_assert(sz == 4); |
| 5078 | //-- pair = disAMode ( cb, sorb, eip+2, dis_buf ); |
| 5079 | //-- t1 = LOW24(pair); |
| 5080 | //-- eip += 2+HI8(pair); |
| 5081 | //-- uInstr3(cb, store ? SSE2a_MemWr : SSE2a_MemRd, 4, |
| 5082 | //-- Lit16, (((UShort)insn[0]) << 8) | (UShort)insn[1], |
| 5083 | //-- Lit16, (UShort)insn[2], |
| 5084 | //-- TempReg, t1 ); |
| 5085 | //-- DIP("%smxcsr %s\n", store ? "st" : "ld", dis_buf ); |
| 5086 | //-- goto decode_success; |
| 5087 | //-- } |
| 5088 | //-- |
| 5089 | //-- /* LFENCE/MFENCE/SFENCE -- flush pending operations to memory */ |
| 5090 | //-- if (insn[0] == 0x0F && insn[1] == 0xAE |
| 5091 | //-- && (epartIsReg(insn[2])) |
| 5092 | //-- && (gregOfRM(insn[2]) >= 5 && gregOfRM(insn[2]) <= 7)) |
| 5093 | //-- { |
| 5094 | //-- vg_assert(sz == 4); |
| 5095 | //-- eip += 3; |
| 5096 | //-- uInstr2(cb, SSE3, 0, /* ignore sz for internal ops */ |
| 5097 | //-- Lit16, (((UShort)0x0F) << 8) | (UShort)0xAE, |
| 5098 | //-- Lit16, (UShort)insn[2] ); |
| 5099 | //-- DIP("sfence\n"); |
| 5100 | //-- goto decode_success; |
| 5101 | //-- } |
| 5102 | //-- |
| 5103 | //-- /* CLFLUSH -- flush cache line */ |
| 5104 | //-- if (insn[0] == 0x0F && insn[1] == 0xAE |
| 5105 | //-- && (!epartIsReg(insn[2])) |
| 5106 | //-- && (gregOfRM(insn[2]) == 7)) |
| 5107 | //-- { |
| 5108 | //-- vg_assert(sz == 4); |
| 5109 | //-- pair = disAMode ( cb, sorb, eip+2, dis_buf ); |
| 5110 | //-- t1 = LOW24(pair); |
| 5111 | //-- eip += 2+HI8(pair); |
| 5112 | //-- uInstr3(cb, SSE2a_MemRd, 0, /* ignore sz for internal ops */ |
| 5113 | //-- Lit16, (((UShort)0x0F) << 8) | (UShort)0xAE, |
| 5114 | //-- Lit16, (UShort)insn[2], |
| 5115 | //-- TempReg, t1 ); |
| 5116 | //-- DIP("clflush %s\n", dis_buf); |
| 5117 | //-- goto decode_success; |
| 5118 | //-- } |
| 5119 | //-- |
| 5120 | //-- /* CVTPI2PS (0x0F,0x2A) -- mm/m64, xmm */ |
| 5121 | //-- /* CVTPI2PD (0x66,0x0F,0x2A) -- mm/m64, xmm */ |
| 5122 | //-- if (insn[0] == 0x0F && insn[1] == 0x2A) { |
| 5123 | //-- if (sz == 4) { |
| 5124 | //-- eip = dis_SSE2_from_MMX |
| 5125 | //-- ( cb, sorb, eip+2, 8, "cvtpi2ps", |
| 5126 | //-- insn[0], insn[1] ); |
| 5127 | //-- } else { |
| 5128 | //-- eip = dis_SSE3_from_MMX |
| 5129 | //-- ( cb, sorb, eip+2, 8, "cvtpi2pd", |
| 5130 | //-- 0x66, insn[0], insn[1] ); |
| 5131 | //-- } |
| 5132 | //-- goto decode_success; |
| 5133 | //-- } |
| 5134 | //-- |
| 5135 | //-- /* CVTTPS2PI (0x0F,0x2C) -- xmm/m64, mm */ |
| 5136 | //-- /* CVTPS2PI (0x0F,0x2D) -- xmm/m64, mm */ |
| 5137 | //-- /* CVTTPD2PI (0x66,0x0F,0x2C) -- xmm/m128, mm */ |
| 5138 | //-- /* CVTPD2PI (0x66,0x0F,0x2D) -- xmm/m128, mm */ |
| 5139 | //-- if (insn[0] == 0x0F |
| 5140 | //-- && (insn[1] == 0x2C || insn[1] == 0x2D)) { |
| 5141 | //-- if (sz == 4) { |
| 5142 | //-- eip = dis_SSE2_to_MMX |
| 5143 | //-- ( cb, sorb, eip+2, 8, "cvt{t}ps2pi", |
| 5144 | //-- insn[0], insn[1] ); |
| 5145 | //-- } else { |
| 5146 | //-- eip = dis_SSE3_to_MMX |
| 5147 | //-- ( cb, sorb, eip+2, 16, "cvt{t}pd2pi", |
| 5148 | //-- 0x66, insn[0], insn[1] ); |
| 5149 | //-- } |
| 5150 | //-- goto decode_success; |
| 5151 | //-- } |
| 5152 | //-- |
| 5153 | //-- /* CVTTSD2SI (0xF2,0x0F,0x2C) -- convert a double-precision float |
| 5154 | //-- value in memory or xmm reg to int and put it in an ireg. |
| 5155 | //-- Truncate. */ |
| 5156 | //-- /* CVTTSS2SI (0xF3,0x0F,0x2C) -- convert a single-precision float |
| 5157 | //-- value in memory or xmm reg to int and put it in an ireg. |
| 5158 | //-- Truncate. */ |
| 5159 | //-- /* CVTSD2SI (0xF2,0x0F,0x2D) -- convert a double-precision float |
| 5160 | //-- value in memory or xmm reg to int and put it in an ireg. Round |
| 5161 | //-- as per MXCSR. */ |
| 5162 | //-- /* CVTSS2SI (0xF3,0x0F,0x2D) -- convert a single-precision float |
| 5163 | //-- value in memory or xmm reg to int and put it in an ireg. Round |
| 5164 | //-- as per MXCSR. */ |
| 5165 | //-- if ((insn[0] == 0xF2 || insn[0] == 0xF3) |
| 5166 | //-- && insn[1] == 0x0F |
| 5167 | //-- && (insn[2] == 0x2C || insn[2] == 0x2D)) { |
| 5168 | //-- vg_assert(sz == 4); |
| 5169 | //-- modrm = insn[3]; |
| 5170 | //-- if (epartIsReg(modrm)) { |
| 5171 | //-- /* We're moving a value in an xmm reg to an ireg. */ |
| 5172 | //-- eip += 4; |
| 5173 | //-- t1 = newTemp(cb); |
| 5174 | //-- /* sz is 4 for all 4 insns. */ |
| 5175 | //-- vg_assert(epartIsReg(modrm)); |
| 5176 | //-- uInstr3(cb, SSE3g_RegWr, 4, |
| 5177 | //-- Lit16, (((UShort)insn[0]) << 8) | (UShort)insn[1], |
| 5178 | //-- Lit16, (((UShort)insn[2]) << 8) | (UShort)modrm, |
| 5179 | //-- TempReg, t1 ); |
| 5180 | //-- uInstr2(cb, PUT, 4, TempReg, t1, ArchReg, gregOfRM(modrm)); |
| 5181 | //-- DIP("cvt{t}s{s,d}2si %s, %s\n", |
| 5182 | //-- nameXMMReg(eregOfRM(modrm)), nameIReg(4,gregOfRM(modrm)) ); |
| 5183 | //-- } else { |
| 5184 | //-- /* So, we're reading memory and writing an ireg. This calls |
| 5185 | //-- for the ultra-horrible SSE3ag_MemRd_RegWr uinstr. We |
| 5186 | //-- can't do it in a roundabout route because it does some |
| 5187 | //-- kind of conversion on the way, which we need to have |
| 5188 | //-- happen too. So our only choice is to re-emit a suitably |
| 5189 | //-- rehashed version of the instruction. */ |
| 5190 | //-- /* Destination ireg is GREG. Address goes as EREG as |
| 5191 | //-- usual. */ |
| 5192 | //-- t1 = newTemp(cb); /* t1 holds value on its way to ireg */ |
| 5193 | //-- pair = disAMode ( cb, sorb, eip+3, dis_buf ); |
| 5194 | //-- t2 = LOW24(pair); /* t2 holds addr */ |
| 5195 | //-- eip += 3+HI8(pair); |
| 5196 | //-- uInstr2(cb, SSE3ag_MemRd_RegWr, insn[0]==0xF2 ? 8 : 4, |
| 5197 | //-- TempReg, t2, /* address */ |
| 5198 | //-- TempReg, t1 /* dest */); |
| 5199 | //-- uLiteral(cb , (((UInt)insn[0]) << 24) |
| 5200 | //-- | (((UInt)insn[1]) << 16) |
| 5201 | //-- | (((UInt)insn[2]) << 8) |
| 5202 | //-- | ((UInt)modrm) ); |
| 5203 | //-- uInstr2(cb, PUT, 4, TempReg, t1, ArchReg, gregOfRM(modrm)); |
| 5204 | //-- DIP("cvt{t}s{s,d}2si %s, %s\n", |
| 5205 | //-- dis_buf, nameIReg(4,gregOfRM(modrm)) ); |
| 5206 | //-- } |
| 5207 | //-- goto decode_success; |
| 5208 | //-- } |
| 5209 | //-- |
| 5210 | //-- /* CVTSI2SS -- convert int reg, or int value in memory, to low 4 |
| 5211 | //-- bytes of XMM reg. */ |
| 5212 | //-- /* CVTSI2SD -- convert int reg, or int value in memory, to low 8 |
| 5213 | //-- bytes of XMM reg. */ |
| 5214 | //-- if ((insn[0] == 0xF3 /*CVTSI2SS*/ || insn[0] == 0xF2 /* CVTSI2SD*/) |
| 5215 | //-- && insn[1] == 0x0F && insn[2] == 0x2A) { |
| 5216 | //-- Char* s_or_d = insn[0]==0xF3 ? "s" : "d"; |
| 5217 | //-- vg_assert(sz == 4); |
| 5218 | //-- modrm = insn[3]; |
| 5219 | //-- t1 = newTemp(cb); |
| 5220 | //-- if (epartIsReg(modrm)) { |
| 5221 | //-- uInstr2(cb, GET, 4, ArchReg, eregOfRM(modrm), TempReg, t1); |
| 5222 | //-- vg_assert(epartIsReg(modrm)); |
| 5223 | //-- uInstr3(cb, SSE3e_RegRd, 4, |
| 5224 | //-- Lit16, (((UShort)insn[0]) << 8) | (UShort)insn[1], |
| 5225 | //-- Lit16, (((UShort)insn[2]) << 8) | (UShort)modrm, |
| 5226 | //-- TempReg, t1 ); |
| 5227 | //-- eip += 4; |
| 5228 | //-- DIP("cvtsi2s%s %s, %s\n", s_or_d, |
| 5229 | //-- nameIReg(4,eregOfRM(modrm)), nameXMMReg(gregOfRM(modrm))); |
| 5230 | //-- } else { |
| 5231 | //-- pair = disAMode ( cb, sorb, eip+3, dis_buf ); |
| 5232 | //-- t2 = LOW24(pair); |
| 5233 | //-- eip += 3+HI8(pair); |
| 5234 | //-- uInstr3(cb, SSE3a_MemRd, 4, |
| 5235 | //-- Lit16, (((UShort)insn[0]) << 8) | (UShort)insn[1], |
| 5236 | //-- Lit16, (((UShort)insn[2]) << 8) | (UShort)modrm, |
| 5237 | //-- TempReg, t2 ); |
| 5238 | //-- DIP("cvtsi2s%s %s, %s\n", |
| 5239 | //-- s_or_d, dis_buf, nameXMMReg(gregOfRM(modrm))); |
| 5240 | //-- } |
| 5241 | //-- goto decode_success; |
| 5242 | //-- } |
| 5243 | //-- |
| 5244 | //-- /* CVTPS2PD -- convert two packed floats to two packed doubles. */ |
| 5245 | //-- /* 0x66: CVTPD2PS -- convert two packed doubles to two packed floats. */ |
| 5246 | //-- if (insn[0] == 0x0F && insn[1] == 0x5A) { |
| 5247 | //-- vg_assert(sz == 2 || sz == 4); |
| 5248 | //-- if (sz == 4) { |
| 5249 | //-- eip = dis_SSE2_reg_or_mem ( cb, sorb, eip+2, 8, "cvtps2pd", |
| 5250 | //-- insn[0], insn[1] ); |
| 5251 | //-- } else { |
| 5252 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "cvtpd2ps", |
| 5253 | //-- 0x66, insn[0], insn[1] ); |
| 5254 | //-- } |
| 5255 | //-- goto decode_success; |
| 5256 | //-- } |
| 5257 | //-- |
| 5258 | //-- /* CVTSS2SD -- convert one single float to double. */ |
| 5259 | //-- if (insn[0] == 0xF3 && insn[1] == 0x0F && insn[2] == 0x5A) { |
| 5260 | //-- vg_assert(sz == 4); |
| 5261 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+3, 4, "cvtss2sd", |
| 5262 | //-- insn[0], insn[1], insn[2] ); |
| 5263 | //-- goto decode_success; |
| 5264 | //-- } |
| 5265 | //-- |
| 5266 | //-- /* CVTSD2SS -- convert one single double. to float. */ |
| 5267 | //-- if (insn[0] == 0xF2 && insn[1] == 0x0F && insn[2] == 0x5A) { |
| 5268 | //-- vg_assert(sz == 4); |
| 5269 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+3, 8, "cvtsd2ss", |
| 5270 | //-- insn[0], insn[1], insn[2] ); |
| 5271 | //-- goto decode_success; |
| 5272 | //-- } |
| 5273 | //-- |
| 5274 | //-- /* CVTDQ2PS -- convert four ints to four packed floats. */ |
| 5275 | //-- /* 0x66: CVTPS2DQ -- convert four packed floats to four ints. */ |
| 5276 | //-- if (insn[0] == 0x0F && insn[1] == 0x5B) { |
| 5277 | //-- vg_assert(sz == 2 || sz == 4); |
| 5278 | //-- if (sz == 4) { |
| 5279 | //-- eip = dis_SSE2_reg_or_mem ( cb, sorb, eip+2, 16, "cvtdq2ps", |
| 5280 | //-- insn[0], insn[1] ); |
| 5281 | //-- } else { |
| 5282 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "cvtps2dq", |
| 5283 | //-- 0x66, insn[0], insn[1] ); |
| 5284 | //-- } |
| 5285 | //-- goto decode_success; |
| 5286 | //-- } |
| 5287 | //-- |
| 5288 | //-- /* CVTPD2DQ -- convert two packed doubles to two ints. */ |
| 5289 | //-- if (sz == 2 |
| 5290 | //-- && insn[0] == 0x0F && insn[1] == 0xE6) { |
| 5291 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 8, "cvtpd2dq", |
| 5292 | //-- 0x66, insn[0], insn[1] ); |
| 5293 | //-- goto decode_success; |
| 5294 | //-- } |
| 5295 | //-- |
| 5296 | //-- /* CVTTPD2DQ -- convert two packed doubles to two ints with truncation. */ |
| 5297 | //-- if (insn[0] == 0xF2 && insn[1] == 0x0F && insn[2] == 0xE6) { |
| 5298 | //-- vg_assert(sz == 4); |
| 5299 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+3, 8, "cvttpd2dq", |
| 5300 | //-- insn[0], insn[1], insn[2] ); |
| 5301 | //-- goto decode_success; |
| 5302 | //-- } |
| 5303 | //-- |
| 5304 | //-- /* CVTDQ2PD -- convert two ints to two packed doubles. */ |
| 5305 | //-- if (insn[0] == 0xF3 && insn[1] == 0x0F && insn[2] == 0xE6) { |
| 5306 | //-- vg_assert(sz == 4); |
| 5307 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+3, 8, "cvtdq2pd", |
| 5308 | //-- insn[0], insn[1], insn[2] ); |
| 5309 | //-- goto decode_success; |
| 5310 | //-- } |
| 5311 | //-- |
| 5312 | //-- /* CVTTPS2DQ -- convert four packed floats to four ints with truncation. */ |
| 5313 | //-- if (insn[0] == 0xF3 && insn[1] == 0x0F && insn[2] == 0x5B) { |
| 5314 | //-- vg_assert(sz == 4); |
| 5315 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+3, 16, "cvttps2dq", |
| 5316 | //-- insn[0], insn[1], insn[2] ); |
| 5317 | //-- goto decode_success; |
| 5318 | //-- } |
| 5319 | //-- |
| 5320 | //-- /* CMPSS -- compare scalar floats. */ |
| 5321 | //-- if (insn[0] == 0xF3 && insn[1] == 0x0F && insn[2] == 0xC2) { |
| 5322 | //-- vg_assert(sz == 4); |
| 5323 | //-- eip = dis_SSE3_reg_or_mem_Imm8 ( cb, sorb, eip+3, 8, "cmpss", |
| 5324 | //-- insn[0], insn[1], insn[2] ); |
| 5325 | //-- goto decode_success; |
| 5326 | //-- } |
| 5327 | //-- |
| 5328 | //-- /* CMPSD -- compare scalar doubles. */ |
| 5329 | //-- if (insn[0] == 0xF2 && insn[1] == 0x0F && insn[2] == 0xC2) { |
| 5330 | //-- vg_assert(sz == 4); |
| 5331 | //-- eip = dis_SSE3_reg_or_mem_Imm8 ( cb, sorb, eip+3, 8, "cmpsd", |
| 5332 | //-- insn[0], insn[1], insn[2] ); |
| 5333 | //-- goto decode_success; |
| 5334 | //-- } |
| 5335 | //-- |
| 5336 | //-- /* sz==4: CMPPS -- compare packed floats */ |
| 5337 | //-- /* sz==2: CMPPD -- compare packed doubles */ |
| 5338 | //-- if (insn[0] == 0x0F && insn[1] == 0xC2) { |
| 5339 | //-- vg_assert(sz == 4 || sz == 2); |
| 5340 | //-- if (sz == 4) { |
| 5341 | //-- eip = dis_SSE2_reg_or_mem_Imm8 ( cb, sorb, eip+2, 16, "cmpps", |
| 5342 | //-- insn[0], insn[1] ); |
| 5343 | //-- } else { |
| 5344 | //-- eip = dis_SSE3_reg_or_mem_Imm8 ( cb, sorb, eip+2, 16, "cmppd", |
| 5345 | //-- 0x66, insn[0], insn[1] ); |
| 5346 | //-- } |
| 5347 | //-- goto decode_success; |
| 5348 | //-- } |
| 5349 | //-- |
| 5350 | //-- /* PSHUFD */ |
| 5351 | //-- if (sz == 2 |
| 5352 | //-- && insn[0] == 0x0F && insn[1] == 0x70) { |
| 5353 | //-- eip = dis_SSE3_reg_or_mem_Imm8 ( cb, sorb, eip+2, 16, |
| 5354 | //-- "pshufd", |
| 5355 | //-- 0x66, insn[0], insn[1] ); |
| 5356 | //-- goto decode_success; |
| 5357 | //-- } |
| 5358 | //-- |
| 5359 | //-- /* PSHUFLW */ |
| 5360 | //-- if (insn[0] == 0xF2 && insn[1] == 0x0F && insn[2] == 0x70) { |
| 5361 | //-- eip = dis_SSE3_reg_or_mem_Imm8 ( cb, sorb, eip+3, 16, |
| 5362 | //-- "pshuflw", |
| 5363 | //-- insn[0], insn[1], insn[2] ); |
| 5364 | //-- goto decode_success; |
| 5365 | //-- } |
| 5366 | //-- |
| 5367 | //-- /* PSHUFHW */ |
| 5368 | //-- if (insn[0] == 0xF3 && insn[1] == 0x0F && insn[2] == 0x70) { |
| 5369 | //-- eip = dis_SSE3_reg_or_mem_Imm8 ( cb, sorb, eip+3, 16, |
| 5370 | //-- "pshufhw", |
| 5371 | //-- insn[0], insn[1], insn[2] ); |
| 5372 | //-- goto decode_success; |
| 5373 | //-- } |
| 5374 | //-- |
| 5375 | //-- /* SHUFPD */ |
| 5376 | //-- if (sz == 2 && insn[0] == 0x0F && insn[1] == 0xC6) { |
| 5377 | //-- eip = dis_SSE3_reg_or_mem_Imm8 ( cb, sorb, eip+2, 16, "shufpd", |
| 5378 | //-- 0x66, insn[0], insn[1] ); |
| 5379 | //-- goto decode_success; |
| 5380 | //-- } |
| 5381 | //-- |
| 5382 | //-- /* SHUFPS */ |
| 5383 | //-- if (insn[0] == 0x0F && insn[1] == 0xC6) { |
| 5384 | //-- vg_assert(sz == 4); |
| 5385 | //-- eip = dis_SSE2_reg_or_mem_Imm8 ( cb, sorb, eip+2, 16, "shufps", |
| 5386 | //-- insn[0], insn[1] ); |
| 5387 | //-- goto decode_success; |
| 5388 | //-- } |
| 5389 | //-- |
| 5390 | //-- /* 0xF2: MULSD */ |
| 5391 | //-- /* 0xF3: MULSS -- multiply low 4 bytes of XMM reg. */ |
| 5392 | //-- if ((insn[0] == 0xF2 || insn[0] == 0xF3) |
| 5393 | //-- && insn[1] == 0x0F && insn[2] == 0x59) { |
| 5394 | //-- Bool sz8 = insn[0] == 0xF2; |
| 5395 | //-- vg_assert(sz == 4); |
| 5396 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+3, sz8 ? 8 : 4, |
| 5397 | //-- sz8 ? "mulss" : "mulsd", |
| 5398 | //-- insn[0], insn[1], insn[2] ); |
| 5399 | //-- goto decode_success; |
| 5400 | //-- } |
| 5401 | //-- |
| 5402 | //-- /* MULPS */ |
| 5403 | //-- /* 0x66: MULPD */ |
| 5404 | //-- if (insn[0] == 0x0F && insn[1] == 0x59) { |
| 5405 | //-- vg_assert(sz == 4 || sz == 2); |
| 5406 | //-- if (sz == 4) { |
| 5407 | //-- eip = dis_SSE2_reg_or_mem ( cb, sorb, eip+2, 16, "mulps", |
| 5408 | //-- insn[0], insn[1] ); |
| 5409 | //-- } else { |
| 5410 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "mulpd", |
| 5411 | //-- 0x66, insn[0], insn[1] ); |
| 5412 | //-- } |
| 5413 | //-- goto decode_success; |
| 5414 | //-- } |
| 5415 | //-- |
| 5416 | //-- /* 0xF2: DIVSD */ |
| 5417 | //-- /* 0xF3: DIVSS -- divide low 4 bytes of XMM reg. */ |
| 5418 | //-- if ((insn[0] == 0xF2 || insn[0] == 0xF3) |
| 5419 | //-- && insn[1] == 0x0F && insn[2] == 0x5E) { |
| 5420 | //-- Bool sz8 = insn[0] == 0xF2; |
| 5421 | //-- vg_assert(sz == 4); |
| 5422 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+3, sz8 ? 8 : 4, |
| 5423 | //-- sz8 ? "divsd" : "divss", |
| 5424 | //-- insn[0], insn[1], insn[2] ); |
| 5425 | //-- goto decode_success; |
| 5426 | //-- } |
| 5427 | //-- |
| 5428 | //-- /* DIVPS */ |
| 5429 | //-- /* 0x66: DIVPD */ |
| 5430 | //-- if (insn[0] == 0x0F && insn[1] == 0x5E) { |
| 5431 | //-- vg_assert(sz == 4 || sz == 2); |
| 5432 | //-- if (sz == 4) { |
| 5433 | //-- eip = dis_SSE2_reg_or_mem ( cb, sorb, eip+2, 16, "divps", |
| 5434 | //-- insn[0], insn[1] ); |
| 5435 | //-- } else { |
| 5436 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "divpd", |
| 5437 | //-- 0x66, insn[0], insn[1] ); |
| 5438 | //-- } |
| 5439 | //-- goto decode_success; |
| 5440 | //-- } |
| 5441 | //-- |
| 5442 | //-- /* 0xF2: SUBSD */ |
| 5443 | //-- /* 0xF3: SUBSS */ |
| 5444 | //-- if ((insn[0] == 0xF2 || insn[0] == 0xF3) |
| 5445 | //-- && insn[1] == 0x0F && insn[2] == 0x5C) { |
| 5446 | //-- Bool sz8 = insn[0] == 0xF2; |
| 5447 | //-- vg_assert(sz == 4); |
| 5448 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+3, sz8 ? 8 : 4, |
| 5449 | //-- sz8 ? "subsd" : "subss", |
| 5450 | //-- insn[0], insn[1], insn[2] ); |
| 5451 | //-- goto decode_success; |
| 5452 | //-- } |
| 5453 | //-- |
| 5454 | //-- /* SUBPS */ |
| 5455 | //-- /* 0x66: SUBPD */ |
| 5456 | //-- if (insn[0] == 0x0F && insn[1] == 0x5C) { |
| 5457 | //-- vg_assert(sz == 4 || sz == 2); |
| 5458 | //-- if (sz == 4) { |
| 5459 | //-- eip = dis_SSE2_reg_or_mem ( cb, sorb, eip+2, 16, "subps", |
| 5460 | //-- insn[0], insn[1] ); |
| 5461 | //-- } else { |
| 5462 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "subpd", |
| 5463 | //-- 0x66, insn[0], insn[1] ); |
| 5464 | //-- } |
| 5465 | //-- goto decode_success; |
| 5466 | //-- } |
| 5467 | //-- |
| 5468 | //-- /* 0xF2: ADDSD */ |
| 5469 | //-- /* 0xF3: ADDSS */ |
| 5470 | //-- if ((insn[0] == 0xF2 || insn[0] == 0xF3) |
| 5471 | //-- && insn[1] == 0x0F && insn[2] == 0x58) { |
| 5472 | //-- Bool sz8 = insn[0] == 0xF2; |
| 5473 | //-- vg_assert(sz == 4); |
| 5474 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+3, sz8 ? 8 : 4, |
| 5475 | //-- sz8 ? "addsd" : "addss", |
| 5476 | //-- insn[0], insn[1], insn[2] ); |
| 5477 | //-- goto decode_success; |
| 5478 | //-- } |
| 5479 | //-- |
| 5480 | //-- /* ADDPS */ |
| 5481 | //-- /* 0x66: ADDPD */ |
| 5482 | //-- if (insn[0] == 0x0F && insn[1] == 0x58) { |
| 5483 | //-- vg_assert(sz == 4 || sz == 2); |
| 5484 | //-- if (sz == 4) { |
| 5485 | //-- eip = dis_SSE2_reg_or_mem ( cb, sorb, eip+2, 16, "addps", |
| 5486 | //-- insn[0], insn[1] ); |
| 5487 | //-- } else { |
| 5488 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "addpd", |
| 5489 | //-- 0x66, insn[0], insn[1] ); |
| 5490 | //-- } |
| 5491 | //-- goto decode_success; |
| 5492 | //-- } |
| 5493 | //-- |
| 5494 | //-- /* 0xF2: MINSD */ |
| 5495 | //-- /* 0xF3: MINSS */ |
| 5496 | //-- if ((insn[0] == 0xF2 || insn[0] == 0xF3) |
| 5497 | //-- && insn[1] == 0x0F && insn[2] == 0x5D) { |
| 5498 | //-- Bool sz8 = insn[0] == 0xF2; |
| 5499 | //-- vg_assert(sz == 4); |
| 5500 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+3, sz8 ? 8 : 4, |
| 5501 | //-- sz8 ? "minsd" : "minss", |
| 5502 | //-- insn[0], insn[1], insn[2] ); |
| 5503 | //-- goto decode_success; |
| 5504 | //-- } |
| 5505 | //-- |
| 5506 | //-- /* MINPS */ |
| 5507 | //-- /* 0x66: MINPD */ |
| 5508 | //-- if (insn[0] == 0x0F && insn[1] == 0x5D) { |
| 5509 | //-- vg_assert(sz == 4 || sz == 2); |
| 5510 | //-- if (sz == 4) { |
| 5511 | //-- eip = dis_SSE2_reg_or_mem ( cb, sorb, eip+2, 16, "minps", |
| 5512 | //-- insn[0], insn[1] ); |
| 5513 | //-- } else { |
| 5514 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "minpd", |
| 5515 | //-- 0x66, insn[0], insn[1] ); |
| 5516 | //-- } |
| 5517 | //-- goto decode_success; |
| 5518 | //-- } |
| 5519 | //-- |
| 5520 | //-- /* 0xF3: MAXSD */ |
| 5521 | //-- /* 0xF3: MAXSS */ |
| 5522 | //-- if ((insn[0] == 0xF2 || insn[0] == 0xF3) |
| 5523 | //-- && insn[1] == 0x0F && insn[2] == 0x5F) { |
| 5524 | //-- Bool sz8 = insn[0] == 0xF2; |
| 5525 | //-- vg_assert(sz == 4); |
| 5526 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+3, sz8 ? 8 : 4, |
| 5527 | //-- sz8 ? "maxsd" : "maxss", |
| 5528 | //-- insn[0], insn[1], insn[2] ); |
| 5529 | //-- goto decode_success; |
| 5530 | //-- } |
| 5531 | //-- |
| 5532 | //-- /* MAXPS */ |
| 5533 | //-- /* 0x66: MAXPD */ |
| 5534 | //-- if (insn[0] == 0x0F && insn[1] == 0x5F) { |
| 5535 | //-- vg_assert(sz == 4 || sz == 2); |
| 5536 | //-- if (sz == 4) { |
| 5537 | //-- eip = dis_SSE2_reg_or_mem ( cb, sorb, eip+2, 16, "maxps", |
| 5538 | //-- insn[0], insn[1] ); |
| 5539 | //-- } else { |
| 5540 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "maxpd", |
| 5541 | //-- 0x66, insn[0], insn[1] ); |
| 5542 | //-- } |
| 5543 | //-- goto decode_success; |
| 5544 | //-- } |
| 5545 | //-- |
| 5546 | //-- /* RCPPS -- reciprocal of packed floats */ |
| 5547 | //-- if (insn[0] == 0x0F && insn[1] == 0x53) { |
| 5548 | //-- vg_assert(sz == 4); |
| 5549 | //-- eip = dis_SSE2_reg_or_mem ( cb, sorb, eip+2, 16, "rcpps", |
| 5550 | //-- insn[0], insn[1] ); |
| 5551 | //-- goto decode_success; |
| 5552 | //-- } |
| 5553 | //-- |
| 5554 | //-- /* XORPS */ |
| 5555 | //-- /* 0x66: XORPD (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5556 | //-- if (insn[0] == 0x0F && insn[1] == 0x57) { |
| 5557 | //-- vg_assert(sz == 4 || sz == 2); |
| 5558 | //-- if (sz == 4) { |
| 5559 | //-- eip = dis_SSE2_reg_or_mem ( cb, sorb, eip+2, 16, "xorps", |
| 5560 | //-- insn[0], insn[1] ); |
| 5561 | //-- } else { |
| 5562 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "xorpd", |
| 5563 | //-- 0x66, insn[0], insn[1] ); |
| 5564 | //-- } |
| 5565 | //-- goto decode_success; |
| 5566 | //-- } |
| 5567 | //-- |
| 5568 | //-- /* ANDPS */ |
| 5569 | //-- /* 0x66: ANDPD (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5570 | //-- if (insn[0] == 0x0F && insn[1] == 0x54) { |
| 5571 | //-- vg_assert(sz == 4 || sz == 2); |
| 5572 | //-- if (sz == 4) { |
| 5573 | //-- eip = dis_SSE2_reg_or_mem ( cb, sorb, eip+2, 16, "andps", |
| 5574 | //-- insn[0], insn[1] ); |
| 5575 | //-- } else { |
| 5576 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "andpd", |
| 5577 | //-- 0x66, insn[0], insn[1] ); |
| 5578 | //-- } |
| 5579 | //-- goto decode_success; |
| 5580 | //-- } |
| 5581 | //-- |
| 5582 | //-- /* ORPS */ |
| 5583 | //-- /* 0x66: ORPD (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5584 | //-- if (insn[0] == 0x0F && insn[1] == 0x56) { |
| 5585 | //-- vg_assert(sz == 4 || sz == 2); |
| 5586 | //-- if (sz == 4) { |
| 5587 | //-- eip = dis_SSE2_reg_or_mem ( cb, sorb, eip+2, 16, "orps", |
| 5588 | //-- insn[0], insn[1] ); |
| 5589 | //-- } else { |
| 5590 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "orpd", |
| 5591 | //-- 0x66, insn[0], insn[1] ); |
| 5592 | //-- } |
| 5593 | //-- goto decode_success; |
| 5594 | //-- } |
| 5595 | //-- |
| 5596 | //-- /* PXOR (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5597 | //-- if (sz == 2 |
| 5598 | //-- && insn[0] == 0x0F && insn[1] == 0xEF) { |
| 5599 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "pxor", |
| 5600 | //-- 0x66, insn[0], insn[1] ); |
| 5601 | //-- goto decode_success; |
| 5602 | //-- } |
| 5603 | //-- |
| 5604 | //-- /* PAND (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5605 | //-- if (sz == 2 |
| 5606 | //-- && insn[0] == 0x0F && insn[1] == 0xDB) { |
| 5607 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "pand", |
| 5608 | //-- 0x66, insn[0], insn[1] ); |
| 5609 | //-- goto decode_success; |
| 5610 | //-- } |
| 5611 | //-- |
| 5612 | //-- /* PANDN (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5613 | //-- if (sz == 2 |
| 5614 | //-- && insn[0] == 0x0F && insn[1] == 0xDF) { |
| 5615 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "pandn", |
| 5616 | //-- 0x66, insn[0], insn[1] ); |
| 5617 | //-- goto decode_success; |
| 5618 | //-- } |
| 5619 | //-- |
| 5620 | //-- /* POR (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5621 | //-- if (sz == 2 |
| 5622 | //-- && insn[0] == 0x0F && insn[1] == 0xEB) { |
| 5623 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "por", |
| 5624 | //-- 0x66, insn[0], insn[1] ); |
| 5625 | //-- goto decode_success; |
| 5626 | //-- } |
| 5627 | //-- |
| 5628 | //-- /* 0xDA: PMINUB(src)xmmreg-or-mem, (dst)xmmreg */ |
| 5629 | //-- /* 0xEA: PMINSW(src)xmmreg-or-mem, (dst)xmmreg */ |
| 5630 | //-- if (sz == 2 |
| 5631 | //-- && insn[0] == 0x0F |
| 5632 | //-- && (insn[1] == 0xDA || insn[1] == 0xEA)) { |
| 5633 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "pmin{ub,sw}", |
| 5634 | //-- 0x66, insn[0], insn[1] ); |
| 5635 | //-- goto decode_success; |
| 5636 | //-- } |
| 5637 | //-- |
| 5638 | //-- /* 0xDE: PMAXUB(src)xmmreg-or-mem, (dst)xmmreg */ |
| 5639 | //-- /* 0xEE: PMAXSW(src)xmmreg-or-mem, (dst)xmmreg */ |
| 5640 | //-- if (sz == 2 |
| 5641 | //-- && insn[0] == 0x0F |
| 5642 | //-- && (insn[1] == 0xDE || insn[1] == 0xEE)) { |
| 5643 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "pmax{ub,sw}", |
| 5644 | //-- 0x66, insn[0], insn[1] ); |
| 5645 | //-- goto decode_success; |
| 5646 | //-- } |
| 5647 | //-- |
| 5648 | //-- /* 0xE0: PAVGB(src)xmmreg-or-mem, (dst)xmmreg */ |
| 5649 | //-- /* 0xE3: PAVGW(src)xmmreg-or-mem, (dst)xmmreg */ |
| 5650 | //-- if (sz == 2 |
| 5651 | //-- && insn[0] == 0x0F |
| 5652 | //-- && (insn[1] == 0xE0 || insn[1] == 0xE3)) { |
| 5653 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "pavg{b,w}", |
| 5654 | //-- 0x66, insn[0], insn[1] ); |
| 5655 | //-- goto decode_success; |
| 5656 | //-- } |
| 5657 | //-- |
| 5658 | //-- /* 0xF6: PSADBW(src)xmmreg-or-mem, (dst)xmmreg */ |
| 5659 | //-- if (sz == 2 |
| 5660 | //-- && insn[0] == 0x0F && insn[1] == 0xF6) { |
| 5661 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "psadbw", |
| 5662 | //-- 0x66, insn[0], insn[1] ); |
| 5663 | //-- goto decode_success; |
| 5664 | //-- } |
| 5665 | //-- |
| 5666 | //-- /* 0x60: PUNPCKLBW (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5667 | //-- /* 0x61: PUNPCKLWD (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5668 | //-- /* 0x62: PUNPCKLDQ (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5669 | //-- /* 0x6C: PUNPCKQLQDQ (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5670 | //-- if (sz == 2 |
| 5671 | //-- && insn[0] == 0x0F |
| 5672 | //-- && (insn[1] == 0x60 || insn[1] == 0x61 |
| 5673 | //-- || insn[1] == 0x62 || insn[1] == 0x6C)) { |
| 5674 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, |
| 5675 | //-- "punpckl{bw,wd,dq,qdq}", |
| 5676 | //-- 0x66, insn[0], insn[1] ); |
| 5677 | //-- goto decode_success; |
| 5678 | //-- } |
| 5679 | //-- |
| 5680 | //-- /* 0x68: PUNPCKHBW (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5681 | //-- /* 0x69: PUNPCKHWD (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5682 | //-- /* 0x6A: PUNPCKHDQ (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5683 | //-- /* 0x6D: PUNPCKHQDQ (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5684 | //-- if (sz == 2 |
| 5685 | //-- && insn[0] == 0x0F |
| 5686 | //-- && (insn[1] == 0x68 || insn[1] == 0x69 |
| 5687 | //-- || insn[1] == 0x6A || insn[1] == 0x6D)) { |
| 5688 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, |
| 5689 | //-- "punpckh{bw,wd,dq,qdq}", |
| 5690 | //-- 0x66, insn[0], insn[1] ); |
| 5691 | //-- goto decode_success; |
| 5692 | //-- } |
| 5693 | //-- |
| 5694 | //-- /* 0x14: UNPCKLPD (src)xmmreg-or-mem, (dst)xmmreg. Reads a+0 |
| 5695 | //-- .. a+7, so we can say size 8 */ |
| 5696 | //-- /* 0x15: UNPCKHPD (src)xmmreg-or-mem, (dst)xmmreg. Reads a+8 |
| 5697 | //-- .. a+15, but we have no way to express this, so better say size |
| 5698 | //-- 16. Sigh. */ |
| 5699 | //-- if (sz == 2 |
| 5700 | //-- && insn[0] == 0x0F |
| 5701 | //-- && (insn[1] == 0x14 || insn[1] == 0x15)) { |
| 5702 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, |
| 5703 | //-- insn[1]==0x14 ? 8 : 16, |
| 5704 | //-- "unpck{l,h}pd", |
| 5705 | //-- 0x66, insn[0], insn[1] ); |
| 5706 | //-- goto decode_success; |
| 5707 | //-- } |
| 5708 | //-- |
| 5709 | //-- /* 0x14: UNPCKLPS (src)xmmreg-or-mem, (dst)xmmreg Reads a+0 |
| 5710 | //-- .. a+7, so we can say size 8 */ |
| 5711 | //-- /* 0x15: UNPCKHPS (src)xmmreg-or-mem, (dst)xmmreg Reads a+8 |
| 5712 | //-- .. a+15, but we have no way to express this, so better say size |
| 5713 | //-- 16. Sigh. */ |
| 5714 | //-- if (sz == 4 |
| 5715 | //-- && insn[0] == 0x0F |
| 5716 | //-- && (insn[1] == 0x14 || insn[1] == 0x15)) { |
| 5717 | //-- eip = dis_SSE2_reg_or_mem ( cb, sorb, eip+2, |
| 5718 | //-- insn[1]==0x14 ? 8 : 16, |
| 5719 | //-- "unpck{l,h}ps", |
| 5720 | //-- insn[0], insn[1] ); |
| 5721 | //-- goto decode_success; |
| 5722 | //-- } |
| 5723 | //-- |
| 5724 | //-- /* 0xFC: PADDB (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5725 | //-- /* 0xFD: PADDW (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5726 | //-- /* 0xFE: PADDD (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5727 | //-- /* 0xD4: PADDQ (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5728 | //-- if (sz == 2 |
| 5729 | //-- && insn[0] == 0x0F |
| 5730 | //-- && (insn[1] == 0xFC || insn[1] == 0xFD |
| 5731 | //-- || insn[1] == 0xFE || insn[1] == 0xD4)) { |
| 5732 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "padd{b,w,d,q}", |
| 5733 | //-- 0x66, insn[0], insn[1] ); |
| 5734 | //-- goto decode_success; |
| 5735 | //-- } |
| 5736 | //-- |
| 5737 | //-- /* 0xEC: PADDSB (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5738 | //-- /* 0xED: PADDSW (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5739 | //-- if (sz == 2 |
| 5740 | //-- && insn[0] == 0x0F |
| 5741 | //-- && (insn[1] == 0xEC || insn[1] == 0xED)) { |
| 5742 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "padds{b,w}", |
| 5743 | //-- 0x66, insn[0], insn[1] ); |
| 5744 | //-- goto decode_success; |
| 5745 | //-- } |
| 5746 | //-- |
| 5747 | //-- /* 0xDC: PADDUSB (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5748 | //-- /* 0xDD: PADDUSW (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5749 | //-- if (sz == 2 |
| 5750 | //-- && insn[0] == 0x0F |
| 5751 | //-- && (insn[1] == 0xDC || insn[1] == 0xDD)) { |
| 5752 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "paddus{b,w}", |
| 5753 | //-- 0x66, insn[0], insn[1] ); |
| 5754 | //-- goto decode_success; |
| 5755 | //-- } |
| 5756 | //-- |
| 5757 | //-- /* 0xF8: PSUBB (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5758 | //-- /* 0xF9: PSUBW (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5759 | //-- /* 0xFA: PSUBD (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5760 | //-- /* 0xFB: PSUBQ (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5761 | //-- if (sz == 2 |
| 5762 | //-- && insn[0] == 0x0F |
| 5763 | //-- && (insn[1] == 0xF8 || insn[1] == 0xF9 |
| 5764 | //-- || insn[1] == 0xFA || insn[1] == 0xFB)) { |
| 5765 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "psub{b,w,d,q}", |
| 5766 | //-- 0x66, insn[0], insn[1] ); |
| 5767 | //-- goto decode_success; |
| 5768 | //-- } |
| 5769 | //-- |
| 5770 | //-- /* 0xE8: PSUBSB (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5771 | //-- /* 0xE9: PSUBSW (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5772 | //-- if (sz == 2 |
| 5773 | //-- && insn[0] == 0x0F |
| 5774 | //-- && (insn[1] == 0xE8 || insn[1] == 0xE9)) { |
| 5775 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "psubs{b,w}", |
| 5776 | //-- 0x66, insn[0], insn[1] ); |
| 5777 | //-- goto decode_success; |
| 5778 | //-- } |
| 5779 | //-- |
| 5780 | //-- /* 0xD8: PSUBUSB (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5781 | //-- /* 0xD9: PSUBUSW (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5782 | //-- if (sz == 2 |
| 5783 | //-- && insn[0] == 0x0F |
| 5784 | //-- && (insn[1] == 0xD8 || insn[1] == 0xD9)) { |
| 5785 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "psubus{b,w}", |
| 5786 | //-- 0x66, insn[0], insn[1] ); |
| 5787 | //-- goto decode_success; |
| 5788 | //-- } |
| 5789 | //-- |
| 5790 | //-- /* 0xE4: PMULHUW(src)xmmreg-or-mem, (dst)xmmreg */ |
| 5791 | //-- /* 0xE5: PMULHW(src)xmmreg-or-mem, (dst)xmmreg */ |
| 5792 | //-- /* 0xD5: PMULLW(src)xmmreg-or-mem, (dst)xmmreg */ |
| 5793 | //-- if (sz == 2 |
| 5794 | //-- && insn[0] == 0x0F |
| 5795 | //-- && (insn[1] == 0xE4 || insn[1] == 0xE5 || insn[1] == 0xD5)) { |
| 5796 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "pmul{hu,h,l}w", |
| 5797 | //-- 0x66, insn[0], insn[1] ); |
| 5798 | //-- goto decode_success; |
| 5799 | //-- } |
| 5800 | //-- |
| 5801 | //-- /* 0xD5: PMULUDQ(src)xmmreg-or-mem, (dst)xmmreg */ |
| 5802 | //-- if (sz == 2 |
| 5803 | //-- && insn[0] == 0x0F && insn[1] == 0xF4) { |
| 5804 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "pmuludq", |
| 5805 | //-- 0x66, insn[0], insn[1] ); |
| 5806 | //-- goto decode_success; |
| 5807 | //-- } |
| 5808 | //-- |
| 5809 | //-- /* 0xF5: PMADDWD(src)xmmreg-or-mem, (dst)xmmreg */ |
| 5810 | //-- if (sz == 2 |
| 5811 | //-- && insn[0] == 0x0F |
| 5812 | //-- && insn[1] == 0xF5) { |
| 5813 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "pmaddwd", |
| 5814 | //-- 0x66, insn[0], insn[1] ); |
| 5815 | //-- goto decode_success; |
| 5816 | //-- } |
| 5817 | //-- |
| 5818 | //-- /* 0x74: PCMPEQB (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5819 | //-- /* 0x75: PCMPEQW (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5820 | //-- /* 0x76: PCMPEQD (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5821 | //-- if (sz == 2 |
| 5822 | //-- && insn[0] == 0x0F |
| 5823 | //-- && (insn[1] == 0x74 || insn[1] == 0x75 || insn[1] == 0x76)) { |
| 5824 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "pcmpeq{b,w,d}", |
| 5825 | //-- 0x66, insn[0], insn[1] ); |
| 5826 | //-- goto decode_success; |
| 5827 | //-- } |
| 5828 | //-- |
| 5829 | //-- /* 0x64: PCMPGTB (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5830 | //-- /* 0x65: PCMPGTW (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5831 | //-- /* 0x66: PCMPGTD (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5832 | //-- if (sz == 2 |
| 5833 | //-- && insn[0] == 0x0F |
| 5834 | //-- && (insn[1] == 0x64 || insn[1] == 0x65 || insn[1] == 0x66)) { |
| 5835 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "pcmpgt{b,w,d}", |
| 5836 | //-- 0x66, insn[0], insn[1] ); |
| 5837 | //-- goto decode_success; |
| 5838 | //-- } |
| 5839 | //-- |
| 5840 | //-- /* 0x63: PACKSSWB (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5841 | //-- /* 0x6B: PACKSSDW (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5842 | //-- if (sz == 2 |
| 5843 | //-- && insn[0] == 0x0F |
| 5844 | //-- && (insn[1] == 0x63 || insn[1] == 0x6B)) { |
| 5845 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "packss{wb,dw}", |
| 5846 | //-- 0x66, insn[0], insn[1] ); |
| 5847 | //-- goto decode_success; |
| 5848 | //-- } |
| 5849 | //-- |
| 5850 | //-- /* 0x67: PACKUSWB (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5851 | //-- if (sz == 2 |
| 5852 | //-- && insn[0] == 0x0F |
| 5853 | //-- && insn[1] == 0x67) { |
| 5854 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "packuswb", |
| 5855 | //-- 0x66, insn[0], insn[1] ); |
| 5856 | //-- goto decode_success; |
| 5857 | //-- } |
| 5858 | //-- |
| 5859 | //-- /* 0xF1: PSLLW (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5860 | //-- /* 0xF2: PSLLD (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5861 | //-- /* 0xF3: PSLLQ (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5862 | //-- if (sz == 2 |
| 5863 | //-- && insn[0] == 0x0F |
| 5864 | //-- && (insn[1] == 0xF1 || insn[1] == 0xF2 || insn[1] == 0xF3)) { |
| 5865 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "psll{b,w,d}", |
| 5866 | //-- 0x66, insn[0], insn[1] ); |
| 5867 | //-- goto decode_success; |
| 5868 | //-- } |
| 5869 | //-- |
| 5870 | //-- /* 0xD1: PSRLW (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5871 | //-- /* 0xD2: PSRLD (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5872 | //-- /* 0xD3: PSRLQ (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5873 | //-- if (sz == 2 |
| 5874 | //-- && insn[0] == 0x0F |
| 5875 | //-- && (insn[1] == 0xD1 || insn[1] == 0xD2 || insn[1] == 0xD3)) { |
| 5876 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "psrl{b,w,d}", |
| 5877 | //-- 0x66, insn[0], insn[1] ); |
| 5878 | //-- goto decode_success; |
| 5879 | //-- } |
| 5880 | //-- |
| 5881 | //-- /* 0xE1: PSRAW (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5882 | //-- /* 0xE2: PSRAD (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5883 | //-- if (sz == 2 |
| 5884 | //-- && insn[0] == 0x0F |
| 5885 | //-- && (insn[1] == 0xE1 || insn[1] == 0xE2)) { |
| 5886 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "psra{w,d}", |
| 5887 | //-- 0x66, insn[0], insn[1] ); |
| 5888 | //-- goto decode_success; |
| 5889 | //-- } |
| 5890 | //-- |
| 5891 | //-- /* (U)COMISD (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5892 | //-- if (sz == 2 |
| 5893 | //-- && insn[0] == 0x0F |
| 5894 | //-- && ( insn[1] == 0x2E || insn[1] == 0x2F ) ) { |
| 5895 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 8, "{u}comisd", |
| 5896 | //-- 0x66, insn[0], insn[1] ); |
| 5897 | //-- vg_assert(LAST_UINSTR(cb).opcode == SSE3a_MemRd |
| 5898 | //-- || LAST_UINSTR(cb).opcode == SSE4); |
| 5899 | //-- uFlagsRWU(cb, FlagsEmpty, FlagsOSZACP, FlagsEmpty); |
| 5900 | //-- goto decode_success; |
| 5901 | //-- } |
| 5902 | //-- |
| 5903 | //-- /* (U)COMISS (src)xmmreg-or-mem, (dst)xmmreg */ |
| 5904 | //-- if (sz == 4 |
| 5905 | //-- && insn[0] == 0x0F |
| 5906 | //-- && ( insn[1] == 0x2E || insn[ 1 ] == 0x2F )) { |
| 5907 | //-- eip = dis_SSE2_reg_or_mem ( cb, sorb, eip+2, 4, "{u}comiss", |
| 5908 | //-- insn[0], insn[1] ); |
| 5909 | //-- vg_assert(LAST_UINSTR(cb).opcode == SSE2a_MemRd |
| 5910 | //-- || LAST_UINSTR(cb).opcode == SSE3); |
| 5911 | //-- uFlagsRWU(cb, FlagsEmpty, FlagsOSZACP, FlagsEmpty); |
| 5912 | //-- goto decode_success; |
| 5913 | //-- } |
| 5914 | //-- |
| 5915 | //-- /* MOVSD -- move 8 bytes of XMM reg to/from XMM reg or mem. */ |
| 5916 | //-- if (insn[0] == 0xF2 |
| 5917 | //-- && insn[1] == 0x0F |
| 5918 | //-- && (insn[2] == 0x11 || insn[2] == 0x10)) { |
| 5919 | //-- vg_assert(sz == 4); |
| 5920 | //-- eip = dis_SSE3_load_store_or_mov |
| 5921 | //-- ( cb, sorb, eip+3, 8, insn[2]==0x11, "movsd", |
| 5922 | //-- insn[0], insn[1], insn[2] ); |
| 5923 | //-- goto decode_success; |
| 5924 | //-- } |
| 5925 | //-- |
| 5926 | //-- /* MOVQ -- move 8 bytes of XMM reg to XMM reg or mem. How |
| 5927 | //-- does this differ from MOVSD ?? */ |
| 5928 | //-- if (sz == 2 |
| 5929 | //-- && insn[0] == 0x0F |
| 5930 | //-- && insn[1] == 0xD6) { |
| 5931 | //-- eip = dis_SSE3_load_store_or_mov |
| 5932 | //-- ( cb, sorb, eip+2, 8, True /*store*/, "movq", |
| 5933 | //-- 0x66, insn[0], insn[1] ); |
| 5934 | //-- goto decode_success; |
| 5935 | //-- } |
| 5936 | //-- |
| 5937 | //-- /* MOVQ -- move 8 bytes of XMM reg or mem to XMM reg. How |
| 5938 | //-- does this differ from MOVSD ?? */ |
| 5939 | //-- if (insn[0] == 0xF3 |
| 5940 | //-- && insn[1] == 0x0F |
| 5941 | //-- && insn[2] == 0x7E) { |
| 5942 | //-- eip = dis_SSE3_load_store_or_mov |
| 5943 | //-- ( cb, sorb, eip+3, 8, False /*load*/, "movq", |
| 5944 | //-- insn[0], insn[1], insn[2] ); |
| 5945 | //-- goto decode_success; |
| 5946 | //-- } |
| 5947 | //-- |
| 5948 | //-- /* MOVDQ2Q -- move low 4 bytes of XMM reg to MMX reg. */ |
| 5949 | //-- if (insn[0] == 0xF2 |
| 5950 | //-- && insn[1] == 0x0F |
| 5951 | //-- && insn[2] == 0xD6) { |
| 5952 | //-- eip = dis_SSE3_to_MMX |
| 5953 | //-- ( cb, sorb, eip+3, 8, "movdq2q", |
| 5954 | //-- insn[0], insn[1], insn[2] ); |
| 5955 | //-- goto decode_success; |
| 5956 | //-- } |
| 5957 | //-- |
| 5958 | //-- /* MOVQ2DQ -- move MMX reg to low 4 bytes of XMM reg. */ |
| 5959 | //-- if (insn[0] == 0xF3 |
| 5960 | //-- && insn[1] == 0x0F |
| 5961 | //-- && insn[2] == 0xD6) { |
| 5962 | //-- eip = dis_SSE3_from_MMX |
| 5963 | //-- ( cb, sorb, eip+3, 8, "movq2dq", |
| 5964 | //-- insn[0], insn[1], insn[2] ); |
| 5965 | //-- goto decode_success; |
| 5966 | //-- } |
| 5967 | //-- |
| 5968 | //-- /* MOVSS -- move 4 bytes of XMM reg to/from XMM reg or mem. */ |
| 5969 | //-- if (insn[0] == 0xF3 |
| 5970 | //-- && insn[1] == 0x0F |
| 5971 | //-- && (insn[2] == 0x11 || insn[2] == 0x10)) { |
| 5972 | //-- vg_assert(sz == 4); |
| 5973 | //-- eip = dis_SSE3_load_store_or_mov |
| 5974 | //-- ( cb, sorb, eip+3, 4, insn[2]==0x11, "movss", |
| 5975 | //-- insn[0], insn[1], insn[2] ); |
| 5976 | //-- goto decode_success; |
| 5977 | //-- } |
| 5978 | //-- |
| 5979 | //-- /* I don't understand how MOVAPD differs from MOVAPS. */ |
| 5980 | //-- /* MOVAPD (28,29) -- aligned load/store of xmm reg, or xmm-xmm reg |
| 5981 | //-- move */ |
| 5982 | //-- if (sz == 2 |
| 5983 | //-- && insn[0] == 0x0F && insn[1] == 0x28) { |
| 5984 | //-- UChar* name = "movapd"; |
| 5985 | //-- //(insn[1] == 0x10 || insn[1] == 0x11) |
| 5986 | //-- // ? "movups" : "movaps"; |
| 5987 | //-- Bool store = False; //insn[1] == 0x29 || insn[1] == 11; |
| 5988 | //-- eip = dis_SSE3_load_store_or_mov |
| 5989 | //-- ( cb, sorb, eip+2, 16, store, name, |
| 5990 | //-- 0x66, insn[0], insn[1] ); |
| 5991 | //-- goto decode_success; |
| 5992 | //-- } |
| 5993 | //-- |
| 5994 | //-- /* sz==4: MOVAPS (28,29) -- aligned load/store of xmm reg, or |
| 5995 | //-- xmm-xmm reg move */ |
| 5996 | //-- /* sz==4: MOVUPS (10,11) -- unaligned load/store of xmm reg, or |
| 5997 | //-- xmm-xmm reg move */ |
| 5998 | //-- /* sz==2: MOVAPD (28,29) -- aligned load/store of xmm reg, or |
| 5999 | //-- xmm-xmm reg move */ |
| 6000 | //-- /* sz==2: MOVUPD (10,11) -- unaligned load/store of xmm reg, or |
| 6001 | //-- xmm-xmm reg move */ |
| 6002 | //-- if (insn[0] == 0x0F && (insn[1] == 0x28 |
| 6003 | //-- || insn[1] == 0x29 |
| 6004 | //-- || insn[1] == 0x10 |
| 6005 | //-- || insn[1] == 0x11)) { |
| 6006 | //-- UChar* name = (insn[1] == 0x10 || insn[1] == 0x11) |
| 6007 | //-- ? "movups" : "movaps"; |
| 6008 | //-- Bool store = insn[1] == 0x29 || insn[1] == 11; |
| 6009 | //-- vg_assert(sz == 2 || sz == 4); |
| 6010 | //-- if (sz == 4) { |
| 6011 | //-- eip = dis_SSE2_load_store_or_mov |
| 6012 | //-- ( cb, sorb, eip+2, 16, store, name, |
| 6013 | //-- insn[0], insn[1] ); |
| 6014 | //-- } else { |
| 6015 | //-- eip = dis_SSE3_load_store_or_mov |
| 6016 | //-- ( cb, sorb, eip+2, 16, store, name, |
| 6017 | //-- 0x66, insn[0], insn[1] ); |
| 6018 | //-- } |
| 6019 | //-- goto decode_success; |
| 6020 | //-- } |
| 6021 | //-- |
| 6022 | //-- /* MOVDQA -- aligned 16-byte load/store. */ |
| 6023 | //-- if (sz == 2 |
| 6024 | //-- && insn[0] == 0x0F |
| 6025 | //-- && (insn[1] == 0x6F || insn[1] == 0x7F)) { |
| 6026 | //-- Bool is_store = insn[1]==0x7F; |
| 6027 | //-- eip = dis_SSE3_load_store_or_mov |
| 6028 | //-- (cb, sorb, eip+2, 16, is_store, "movdqa", |
| 6029 | //-- 0x66, insn[0], insn[1] ); |
| 6030 | //-- goto decode_success; |
| 6031 | //-- } |
| 6032 | //-- |
| 6033 | //-- /* MOVDQU -- unaligned 16-byte load/store. */ |
| 6034 | //-- if (insn[0] == 0xF3 |
| 6035 | //-- && insn[1] == 0x0F |
| 6036 | //-- && (insn[2] == 0x6F || insn[2] == 0x7F)) { |
| 6037 | //-- Bool is_store = insn[2]==0x7F; |
| 6038 | //-- eip = dis_SSE3_load_store_or_mov |
| 6039 | //-- (cb, sorb, eip+3, 16, is_store, "movdqu", |
| 6040 | //-- insn[0], insn[1], insn[2] ); |
| 6041 | //-- goto decode_success; |
| 6042 | //-- } |
| 6043 | //-- |
| 6044 | //-- /* MOVNTDQ -- 16-byte store with temporal hint (which we |
| 6045 | //-- ignore). */ |
| 6046 | //-- if (sz == 2 |
| 6047 | //-- && insn[0] == 0x0F |
| 6048 | //-- && insn[1] == 0xE7) { |
| 6049 | //-- eip = dis_SSE3_load_store_or_mov |
| 6050 | //-- (cb, sorb, eip+2, 16, True /* is_store */, "movntdq", |
| 6051 | //-- 0x66, insn[0], insn[1] ); |
| 6052 | //-- goto decode_success; |
| 6053 | //-- } |
| 6054 | //-- |
| 6055 | //-- /* MOVNTPS -- 16-byte store with temporal hint (which we |
| 6056 | //-- ignore). */ |
| 6057 | //-- if (insn[0] == 0x0F |
| 6058 | //-- && insn[1] == 0x2B) { |
| 6059 | //-- eip = dis_SSE2_load_store_or_mov |
| 6060 | //-- (cb, sorb, eip+2, 16, True /* is_store */, "movntps", |
| 6061 | //-- insn[0], insn[1] ); |
| 6062 | //-- goto decode_success; |
| 6063 | //-- } |
| 6064 | //-- |
| 6065 | //-- /* MOVNTPD -- 16-byte store with temporal hint (which we |
| 6066 | //-- ignore). */ |
| 6067 | //-- if (sz == 2 |
| 6068 | //-- && insn[0] == 0x0F |
| 6069 | //-- && insn[1] == 0x2B) { |
| 6070 | //-- eip = dis_SSE3_load_store_or_mov |
| 6071 | //-- (cb, sorb, eip+2, 16, True /* is_store */, "movntpd", |
| 6072 | //-- 0x66, insn[0], insn[1] ); |
| 6073 | //-- goto decode_success; |
| 6074 | //-- } |
| 6075 | //-- |
| 6076 | //-- /* MOVD -- 4-byte move between xmmregs and (ireg or memory). */ |
| 6077 | //-- if (sz == 2 |
| 6078 | //-- && insn[0] == 0x0F |
| 6079 | //-- && (insn[1] == 0x6E || insn[1] == 0x7E)) { |
| 6080 | //-- Bool is_store = insn[1]==0x7E; |
| 6081 | //-- modrm = insn[2]; |
| 6082 | //-- if (epartIsReg(modrm) && is_store) { |
| 6083 | //-- t1 = newTemp(cb); |
| 6084 | //-- uInstr3(cb, SSE3e_RegWr, 4, |
| 6085 | //-- Lit16, (((UShort)0x66) << 8) | (UShort)insn[0], |
| 6086 | //-- Lit16, (((UShort)insn[1]) << 8) | (UShort)modrm, |
| 6087 | //-- TempReg, t1 ); |
| 6088 | //-- uInstr2(cb, PUT, 4, TempReg, t1, ArchReg, eregOfRM(modrm)); |
| 6089 | //-- DIP("movd %s, %s\n", |
| 6090 | //-- nameXMMReg(gregOfRM(modrm)), nameIReg(4,eregOfRM(modrm))); |
| 6091 | //-- eip += 3; |
| 6092 | //-- } else |
| 6093 | //-- if (epartIsReg(modrm) && !is_store) { |
| 6094 | //-- t1 = newTemp(cb); |
| 6095 | //-- uInstr2(cb, GET, 4, ArchReg, eregOfRM(modrm), TempReg, t1); |
| 6096 | //-- uInstr3(cb, SSE3e_RegRd, 4, |
| 6097 | //-- Lit16, (((UShort)0x66) << 8) | (UShort)insn[0], |
| 6098 | //-- Lit16, (((UShort)insn[1]) << 8) | (UShort)modrm, |
| 6099 | //-- TempReg, t1 ); |
| 6100 | //-- DIP("movd %s, %s\n", |
| 6101 | //-- nameIReg(4,eregOfRM(modrm)), nameXMMReg(gregOfRM(modrm))); |
| 6102 | //-- eip += 3; |
| 6103 | //-- } else { |
| 6104 | //-- eip = dis_SSE3_load_store_or_mov |
| 6105 | //-- (cb, sorb, eip+2, 4, is_store, "movd", |
| 6106 | //-- 0x66, insn[0], insn[1] ); |
| 6107 | //-- } |
| 6108 | //-- goto decode_success; |
| 6109 | //-- } |
| 6110 | //-- |
| 6111 | //-- /* PEXTRW from SSE register; writes ireg */ |
| 6112 | //-- if (sz == 2 && insn[0] == 0x0F && insn[1] == 0xC5) { |
| 6113 | //-- t1 = newTemp(cb); |
| 6114 | //-- modrm = insn[2]; |
| 6115 | //-- vg_assert(epartIsReg(modrm)); |
| 6116 | //-- vg_assert((modrm & 0xC0) == 0xC0); |
| 6117 | //-- uInstr3(cb, SSE3g1_RegWr, 4, |
| 6118 | //-- Lit16, (((UShort)0x66) << 8) | (UShort)insn[0], |
| 6119 | //-- Lit16, (((UShort)insn[1]) << 8) | (UShort)modrm, |
| 6120 | //-- TempReg, t1 ); |
| 6121 | //-- uLiteral(cb, insn[3]); |
| 6122 | //-- uInstr2(cb, PUT, 4, TempReg, t1, ArchReg, gregOfRM(modrm)); |
| 6123 | //-- DIP("pextrw %s, %d, %s\n", |
| 6124 | //-- nameXMMReg(eregOfRM(modrm)), (Int)insn[3], |
| 6125 | //-- nameIReg(4, gregOfRM(modrm))); |
| 6126 | //-- eip += 4; |
| 6127 | //-- goto decode_success; |
| 6128 | //-- } |
| 6129 | //-- |
| 6130 | //-- /* PINSRW to SSE register; reads mem or ireg */ |
| 6131 | //-- if (sz == 2 && insn[0] == 0x0F && insn[1] == 0xC4) { |
| 6132 | //-- t1 = newTemp(cb); |
| 6133 | //-- modrm = insn[2]; |
| 6134 | //-- if (epartIsReg(modrm)) { |
| 6135 | //-- uInstr2(cb, GET, 2, ArchReg, eregOfRM(modrm), TempReg, t1); |
| 6136 | //-- vg_assert(epartIsReg(modrm)); |
| 6137 | //-- uInstr3(cb, SSE3e1_RegRd, 2, |
| 6138 | //-- Lit16, (((UShort)0x66) << 8) | (UShort)insn[0], |
| 6139 | //-- Lit16, (((UShort)insn[1]) << 8) | (UShort)modrm, |
| 6140 | //-- TempReg, t1 ); |
| 6141 | //-- uLiteral(cb, insn[3]); |
| 6142 | //-- DIP("pinsrw %s, %d, %s\n", |
| 6143 | //-- nameIReg(2, eregOfRM(modrm)), (Int)insn[3], |
| 6144 | //-- nameXMMReg(gregOfRM(modrm))); |
| 6145 | //-- eip += 4; |
| 6146 | //-- } else { |
| 6147 | //-- VG_(core_panic)("PINSRW mem"); |
| 6148 | //-- } |
| 6149 | //-- goto decode_success; |
| 6150 | //-- } |
| 6151 | //-- |
| 6152 | //-- /* SQRTSD: square root of scalar double. */ |
| 6153 | //-- if (insn[0] == 0xF2 && insn[1] == 0x0F && insn[2] == 0x51) { |
| 6154 | //-- vg_assert(sz == 4); |
| 6155 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+3, 8, |
| 6156 | //-- "sqrtsd", |
| 6157 | //-- insn[0], insn[1], insn[2] ); |
| 6158 | //-- goto decode_success; |
| 6159 | //-- } |
| 6160 | //-- |
| 6161 | //-- /* SQRTSS: square root of scalar float. */ |
| 6162 | //-- if (insn[0] == 0xF3 && insn[1] == 0x0F && insn[2] == 0x51) { |
| 6163 | //-- vg_assert(sz == 4); |
| 6164 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+3, 4, |
| 6165 | //-- "sqrtss", |
| 6166 | //-- insn[0], insn[1], insn[2] ); |
| 6167 | //-- goto decode_success; |
| 6168 | //-- } |
| 6169 | //-- |
| 6170 | //-- /* RSQRTSS: square root reciprocal of scalar float. */ |
| 6171 | //-- if (insn[0] == 0xF3 && insn[1] == 0x0F && insn[2] == 0x52) { |
| 6172 | //-- vg_assert(sz == 4); |
| 6173 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+3, 4, |
| 6174 | //-- "sqrtss", |
| 6175 | //-- insn[0], insn[1], insn[2] ); |
| 6176 | //-- goto decode_success; |
| 6177 | //-- } |
| 6178 | //-- |
| 6179 | //-- /* 0xF3: RCPSS -- reciprocal of scalar float */ |
| 6180 | //-- if (insn[0] == 0xF3 && insn[1] == 0x0F && insn[2] == 0x53) { |
| 6181 | //-- vg_assert(sz == 4); |
| 6182 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+3, 4, |
| 6183 | //-- "rcpss", |
| 6184 | //-- insn[0], insn[1], insn[2] ); |
| 6185 | //-- goto decode_success; |
| 6186 | //-- } |
| 6187 | //-- |
| 6188 | //-- /* MOVMSKPD -- extract 2 sign bits from a xmm reg and copy them to |
| 6189 | //-- an ireg. Top 30 bits of ireg are set to zero. */ |
| 6190 | //-- /* MOVMSKPS -- extract 4 sign bits from a xmm reg and copy them to |
| 6191 | //-- an ireg. Top 28 bits of ireg are set to zero. */ |
| 6192 | //-- if (insn[0] == 0x0F && insn[1] == 0x50) { |
| 6193 | //-- vg_assert(sz == 4 || sz == 2); |
| 6194 | //-- modrm = insn[2]; |
| 6195 | //-- /* Intel docs don't say anything about a memory source being |
| 6196 | //-- allowed here. */ |
| 6197 | //-- vg_assert(epartIsReg(modrm)); |
| 6198 | //-- t1 = newTemp(cb); |
| 6199 | //-- if (sz == 4) { |
| 6200 | //-- uInstr3(cb, SSE2g_RegWr, 4, |
| 6201 | //-- Lit16, (((UShort)insn[0]) << 8) | (UShort)insn[1], |
| 6202 | //-- Lit16, (UShort)modrm, |
| 6203 | //-- TempReg, t1 ); |
| 6204 | //-- uInstr2(cb, PUT, 4, TempReg, t1, ArchReg, gregOfRM(modrm)); |
| 6205 | //-- } else { |
| 6206 | //-- uInstr3(cb, SSE3g_RegWr, 4, |
| 6207 | //-- Lit16, (((UShort)0x66) << 8) | (UShort)insn[0], |
| 6208 | //-- Lit16, (((UShort)insn[1]) << 8) | (UShort)modrm, |
| 6209 | //-- TempReg, t1 ); |
| 6210 | //-- uInstr2(cb, PUT, 4, TempReg, t1, ArchReg, gregOfRM(modrm)); |
| 6211 | //-- } |
| 6212 | //-- DIP("movmskp%c %s, %s\n", sz == 4 ? 's' : 'd', |
| 6213 | //-- nameXMMReg(eregOfRM(modrm)), nameIReg(4,gregOfRM(modrm))); |
| 6214 | //-- eip += 3; |
| 6215 | //-- goto decode_success; |
| 6216 | //-- } |
| 6217 | //-- |
| 6218 | //-- /* ANDNPS */ |
| 6219 | //-- /* 0x66: ANDNPD (src)xmmreg-or-mem, (dst)xmmreg */ |
| 6220 | //-- if (insn[0] == 0x0F && insn[1] == 0x55) { |
| 6221 | //-- vg_assert(sz == 4 || sz == 2); |
| 6222 | //-- if (sz == 4) { |
| 6223 | //-- eip = dis_SSE2_reg_or_mem ( cb, sorb, eip+2, 16, "andnps", |
| 6224 | //-- insn[0], insn[1] ); |
| 6225 | //-- } else { |
| 6226 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, "andnpd", |
| 6227 | //-- 0x66, insn[0], insn[1] ); |
| 6228 | //-- } |
| 6229 | //-- goto decode_success; |
| 6230 | //-- } |
| 6231 | //-- |
| 6232 | //-- /* MOVHLPS -- move two packed floats from high quadword to low quadword */ |
| 6233 | //-- /* MOVLPS -- load/store two packed floats to/from low quadword. */ |
| 6234 | //-- /* MOVLPD -- load/store packed double to/from low quadword. */ |
| 6235 | //-- if (insn[0] == 0x0F |
| 6236 | //-- && (insn[1] == 0x12 || insn[1] == 0x13)) { |
| 6237 | //-- Bool is_store = insn[1]==0x13; |
| 6238 | //-- vg_assert(sz == 4 || sz == 2); |
| 6239 | //-- if (sz == 4) { |
| 6240 | //-- if (epartIsReg(insn[2])) { |
| 6241 | //-- vg_assert(insn[1]==0x12); |
| 6242 | //-- eip = dis_SSE2_reg_or_mem ( cb, sorb, eip+2, 16, "movhlps", |
| 6243 | //-- insn[0], insn[1] ); |
| 6244 | //-- } else { |
| 6245 | //-- eip = dis_SSE2_load_store_or_mov |
| 6246 | //-- (cb, sorb, eip+2, 8, is_store, "movlps", |
| 6247 | //-- insn[0], insn[1] ); |
| 6248 | //-- } |
| 6249 | //-- } else { |
| 6250 | //-- vg_assert(!epartIsReg(insn[2])); |
| 6251 | //-- eip = dis_SSE3_load_store_or_mov |
| 6252 | //-- (cb, sorb, eip+2, 8, is_store, "movlpd", |
| 6253 | //-- 0x66, insn[0], insn[1] ); |
| 6254 | //-- } |
| 6255 | //-- goto decode_success; |
| 6256 | //-- } |
| 6257 | //-- |
| 6258 | //-- /* MOVLHPS -- move two packed floats from low quadword to high quadword */ |
| 6259 | //-- /* MOVHPS -- load/store two packed floats to/from high quadword. */ |
| 6260 | //-- /* MOVHPD -- load/store packed double to/from high quadword. */ |
| 6261 | //-- if (insn[0] == 0x0F |
| 6262 | //-- && (insn[1] == 0x16 || insn[1] == 0x17)) { |
| 6263 | //-- Bool is_store = insn[1]==0x17; |
| 6264 | //-- vg_assert(sz == 4 || sz == 2); |
| 6265 | //-- if (sz == 4) { |
| 6266 | //-- if (epartIsReg(insn[2])) { |
| 6267 | //-- vg_assert(insn[1]==0x16); |
| 6268 | //-- eip = dis_SSE2_reg_or_mem ( cb, sorb, eip+2, 16, "movlhps", |
| 6269 | //-- insn[0], insn[1] ); |
| 6270 | //-- } else { |
| 6271 | //-- eip = dis_SSE2_load_store_or_mov |
| 6272 | //-- (cb, sorb, eip+2, 8, is_store, "movhps", |
| 6273 | //-- insn[0], insn[1] ); |
| 6274 | //-- } |
| 6275 | //-- } else { |
| 6276 | //-- vg_assert(!epartIsReg(insn[2])); |
| 6277 | //-- eip = dis_SSE3_load_store_or_mov |
| 6278 | //-- (cb, sorb, eip+2, 8, is_store, "movhpd", |
| 6279 | //-- 0x66, insn[0], insn[1] ); |
| 6280 | //-- } |
| 6281 | //-- goto decode_success; |
| 6282 | //-- } |
| 6283 | //-- |
| 6284 | //-- /* PMOVMSKB -- extract 16 sign bits from a xmm reg and copy them to |
| 6285 | //-- an ireg. Top 16 bits of ireg are set to zero. */ |
| 6286 | //-- if (sz == 2 && insn[0] == 0x0F && insn[1] == 0xD7) { |
| 6287 | //-- modrm = insn[2]; |
| 6288 | //-- /* Intel docs don't say anything about a memory source being |
| 6289 | //-- allowed here. */ |
| 6290 | //-- vg_assert(epartIsReg(modrm)); |
| 6291 | //-- t1 = newTemp(cb); |
| 6292 | //-- uInstr3(cb, SSE3g_RegWr, 4, |
| 6293 | //-- Lit16, (((UShort)0x66) << 8) | (UShort)insn[0], |
| 6294 | //-- Lit16, (((UShort)insn[1]) << 8) | (UShort)modrm, |
| 6295 | //-- TempReg, t1 ); |
| 6296 | //-- uInstr2(cb, PUT, 4, TempReg, t1, ArchReg, gregOfRM(modrm)); |
| 6297 | //-- DIP("pmovmskb %s, %s\n", |
| 6298 | //-- nameXMMReg(eregOfRM(modrm)), nameIReg(4,gregOfRM(modrm))); |
| 6299 | //-- eip += 3; |
| 6300 | //-- goto decode_success; |
| 6301 | //-- } |
| 6302 | //-- |
| 6303 | //-- /* sz==4: SQRTPS: square root of packed float. */ |
| 6304 | //-- /* sz==2: SQRTPD: square root of packed double. */ |
| 6305 | //-- if (insn[0] == 0x0F && insn[1] == 0x51) { |
| 6306 | //-- vg_assert(sz == 2 || sz == 4); |
| 6307 | //-- if (sz == 4) { |
| 6308 | //-- eip = dis_SSE2_reg_or_mem ( cb, sorb, eip+2, 16, |
| 6309 | //-- "sqrtps", |
| 6310 | //-- insn[0], insn[1] ); |
| 6311 | //-- } else { |
| 6312 | //-- eip = dis_SSE3_reg_or_mem ( cb, sorb, eip+2, 16, |
| 6313 | //-- "sqrtpd", |
| 6314 | //-- 0x66, insn[0], insn[1] ); |
| 6315 | //-- } |
| 6316 | //-- goto decode_success; |
| 6317 | //-- } |
| 6318 | //-- |
| 6319 | //-- /* RSQRTPS: square root reciprocal of packed float. */ |
| 6320 | //-- if (insn[0] == 0x0F && insn[1] == 0x52) { |
| 6321 | //-- vg_assert(sz == 4); |
| 6322 | //-- eip = dis_SSE2_reg_or_mem ( cb, sorb, eip+2, 16, |
| 6323 | //-- "rsqrtps", |
| 6324 | //-- insn[0], insn[1] ); |
| 6325 | //-- goto decode_success; |
| 6326 | //-- } |
| 6327 | //-- |
| 6328 | //-- /* Fall through into the non-SSE decoder. */ |
| 6329 | //-- |
| 6330 | //-- } /* if (VG_(have_ssestate)) */ |
| 6331 | |
| 6332 | |
| 6333 | /* ---------------------------------------------------- */ |
| 6334 | /* --- end of the SSE/SSE2 decoder. --- */ |
| 6335 | /* ---------------------------------------------------- */ |
| 6336 | |
| 6337 | /* Get the primary opcode. */ |
| 6338 | opc = getIByte(delta); delta++; |
| 6339 | |
| 6340 | /* We get here if the current insn isn't SSE, or this CPU doesn't |
| 6341 | support SSE. */ |
| 6342 | |
| 6343 | switch (opc) { |
| 6344 | |
| 6345 | /* ------------------------ Control flow --------------- */ |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 6346 | |
| 6347 | case 0xC2: /* RET imm16 */ |
| 6348 | d32 = getUDisp16(delta); |
| 6349 | delta += 2; |
| 6350 | dis_ret(d32); |
| 6351 | *isEnd = True; |
| 6352 | DIP("ret %d\n", d32); |
| 6353 | break; |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 6354 | case 0xC3: /* RET */ |
| 6355 | dis_ret(0); |
| 6356 | *isEnd = True; |
| 6357 | DIP("ret\n"); |
| 6358 | break; |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 6359 | |
| 6360 | case 0xE8: /* CALL J4 */ |
| 6361 | d32 = getUDisp32(delta); delta += 4; |
| 6362 | d32 += (guest_eip+delta); |
| 6363 | /* (guest_eip+delta) == return-to addr, d32 == call-to addr */ |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 6364 | if (d32 == guest_eip+delta && getIByte(delta) >= 0x58 |
| 6365 | && getIByte(delta) <= 0x5F) { |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 6366 | /* Specially treat the position-independent-code idiom |
| 6367 | call X |
| 6368 | X: popl %reg |
| 6369 | as |
| 6370 | movl %eip, %reg. |
| 6371 | since this generates better code, but for no other reason. */ |
| 6372 | Int archReg = getIByte(delta) - 0x58; |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 6373 | /* vex_printf("-- fPIC thingy\n"); */ |
| 6374 | putIReg(4, archReg, mkU32(guest_eip+delta)); |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 6375 | delta++; /* Step over the POP */ |
| 6376 | DIP("call 0x%x ; popl %s\n",d32,nameIReg(4,archReg)); |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 6377 | } else { |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 6378 | /* The normal sequence for a call. */ |
| 6379 | t1 = newTemp(Ity_I32); |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 6380 | assign(t1, binop(Iop_Sub32, getIReg(4,R_ESP), mkU32(4))); |
| 6381 | putIReg(4, R_ESP, mkexpr(t1)); |
| 6382 | storeLE( mkexpr(t1), mkU32(guest_eip+delta)); |
sewardj | 78c19df | 2004-07-12 22:49:27 +0000 | [diff] [blame] | 6383 | jmp_lit(Ijk_Call,d32); |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 6384 | *isEnd = True; |
| 6385 | DIP("call 0x%x\n",d32); |
| 6386 | } |
| 6387 | break; |
| 6388 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 6389 | //-- case 0xC8: /* ENTER */ |
| 6390 | //-- d32 = getUDisp16(eip); eip += 2; |
| 6391 | //-- abyte = getIByte(delta); delta++; |
| 6392 | //-- |
| 6393 | //-- vg_assert(sz == 4); |
| 6394 | //-- vg_assert(abyte == 0); |
| 6395 | //-- |
| 6396 | //-- t1 = newTemp(cb); t2 = newTemp(cb); |
| 6397 | //-- uInstr2(cb, GET, sz, ArchReg, R_EBP, TempReg, t1); |
| 6398 | //-- uInstr2(cb, GET, 4, ArchReg, R_ESP, TempReg, t2); |
| 6399 | //-- uInstr2(cb, SUB, 4, Literal, 0, TempReg, t2); |
| 6400 | //-- uLiteral(cb, sz); |
| 6401 | //-- uInstr2(cb, PUT, 4, TempReg, t2, ArchReg, R_ESP); |
| 6402 | //-- uInstr2(cb, STORE, 4, TempReg, t1, TempReg, t2); |
| 6403 | //-- uInstr2(cb, PUT, 4, TempReg, t2, ArchReg, R_EBP); |
| 6404 | //-- if (d32) { |
| 6405 | //-- uInstr2(cb, SUB, 4, Literal, 0, TempReg, t2); |
| 6406 | //-- uLiteral(cb, d32); |
| 6407 | //-- uInstr2(cb, PUT, 4, TempReg, t2, ArchReg, R_ESP); |
| 6408 | //-- } |
| 6409 | //-- DIP("enter 0x%x, 0x%x", d32, abyte); |
| 6410 | //-- break; |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 6411 | |
| 6412 | case 0xC9: /* LEAVE */ |
| 6413 | vassert(sz == 4); |
| 6414 | t1 = newTemp(Ity_I32); t2 = newTemp(Ity_I32); |
| 6415 | assign(t1, getIReg(4,R_EBP)); |
| 6416 | /* First PUT ESP looks redundant, but need it because ESP must |
| 6417 | always be up-to-date for Memcheck to work... */ |
| 6418 | putIReg(4, R_ESP, mkexpr(t1)); |
| 6419 | assign(t2, loadLE(Ity_I32,mkexpr(t1))); |
| 6420 | putIReg(4, R_EBP, mkexpr(t2)); |
| 6421 | putIReg(4, R_ESP, binop(Iop_Add32, mkexpr(t1), mkU32(4)) ); |
| 6422 | DIP("leave\n"); |
| 6423 | break; |
| 6424 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 6425 | //-- /* ---------------- Misc weird-ass insns --------------- */ |
| 6426 | //-- |
| 6427 | //-- case 0x27: /* DAA */ |
| 6428 | //-- case 0x2F: /* DAS */ |
| 6429 | //-- t1 = newTemp(cb); |
| 6430 | //-- uInstr2(cb, GET, 1, ArchReg, R_AL, TempReg, t1); |
| 6431 | //-- /* Widen %AL to 32 bits, so it's all defined when we push it. */ |
| 6432 | //-- uInstr1(cb, WIDEN, 4, TempReg, t1); |
| 6433 | //-- uWiden(cb, 1, False); |
| 6434 | //-- uInstr0(cb, CALLM_S, 0); |
| 6435 | //-- uInstr1(cb, PUSH, 4, TempReg, t1); |
| 6436 | //-- uInstr1(cb, CALLM, 0, Lit16, |
| 6437 | //-- opc == 0x27 ? VGOFF_(helper_DAA) : VGOFF_(helper_DAS) ); |
| 6438 | //-- uFlagsRWU(cb, FlagsAC, FlagsSZACP, FlagO); |
| 6439 | //-- uInstr1(cb, POP, 4, TempReg, t1); |
| 6440 | //-- uInstr0(cb, CALLM_E, 0); |
| 6441 | //-- uInstr2(cb, PUT, 1, TempReg, t1, ArchReg, R_AL); |
| 6442 | //-- DIP(opc == 0x27 ? "daa\n" : "das\n"); |
| 6443 | //-- break; |
| 6444 | //-- |
| 6445 | //-- case 0x37: /* AAA */ |
| 6446 | //-- case 0x3F: /* AAS */ |
| 6447 | //-- t1 = newTemp(cb); |
| 6448 | //-- uInstr2(cb, GET, 2, ArchReg, R_EAX, TempReg, t1); |
| 6449 | //-- /* Widen %AL to 32 bits, so it's all defined when we push it. */ |
| 6450 | //-- uInstr1(cb, WIDEN, 4, TempReg, t1); |
| 6451 | //-- uWiden(cb, 2, False); |
| 6452 | //-- uInstr0(cb, CALLM_S, 0); |
| 6453 | //-- uInstr1(cb, PUSH, 4, TempReg, t1); |
| 6454 | //-- uInstr1(cb, CALLM, 0, Lit16, |
| 6455 | //-- opc == 0x37 ? VGOFF_(helper_AAA) : VGOFF_(helper_AAS) ); |
| 6456 | //-- uFlagsRWU(cb, FlagA, FlagsAC, FlagsEmpty); |
| 6457 | //-- uInstr1(cb, POP, 4, TempReg, t1); |
| 6458 | //-- uInstr0(cb, CALLM_E, 0); |
| 6459 | //-- uInstr2(cb, PUT, 2, TempReg, t1, ArchReg, R_EAX); |
| 6460 | //-- DIP(opc == 0x37 ? "aaa\n" : "aas\n"); |
| 6461 | //-- break; |
| 6462 | //-- |
| 6463 | //-- case 0xD4: /* AAM */ |
| 6464 | //-- case 0xD5: /* AAD */ |
| 6465 | //-- d32 = getIByte(delta); delta++; |
| 6466 | //-- if (d32 != 10) VG_(core_panic)("disInstr: AAM/AAD but base not 10 !"); |
| 6467 | //-- t1 = newTemp(cb); |
| 6468 | //-- uInstr2(cb, GET, 2, ArchReg, R_EAX, TempReg, t1); |
| 6469 | //-- /* Widen %AX to 32 bits, so it's all defined when we push it. */ |
| 6470 | //-- uInstr1(cb, WIDEN, 4, TempReg, t1); |
| 6471 | //-- uWiden(cb, 2, False); |
| 6472 | //-- uInstr0(cb, CALLM_S, 0); |
| 6473 | //-- uInstr1(cb, PUSH, 4, TempReg, t1); |
| 6474 | //-- uInstr1(cb, CALLM, 0, Lit16, |
| 6475 | //-- opc == 0xD4 ? VGOFF_(helper_AAM) : VGOFF_(helper_AAD) ); |
| 6476 | //-- uFlagsRWU(cb, FlagsEmpty, FlagsSZP, FlagsEmpty); |
| 6477 | //-- uInstr1(cb, POP, 4, TempReg, t1); |
| 6478 | //-- uInstr0(cb, CALLM_E, 0); |
| 6479 | //-- uInstr2(cb, PUT, 2, TempReg, t1, ArchReg, R_EAX); |
| 6480 | //-- DIP(opc == 0xD4 ? "aam\n" : "aad\n"); |
| 6481 | //-- break; |
| 6482 | //-- |
| 6483 | //-- /* ------------------------ CWD/CDQ -------------------- */ |
| 6484 | //-- |
| 6485 | //-- case 0x98: /* CBW */ |
| 6486 | //-- t1 = newTemp(cb); |
| 6487 | //-- if (sz == 4) { |
| 6488 | //-- uInstr2(cb, GET, 2, ArchReg, R_EAX, TempReg, t1); |
| 6489 | //-- uInstr1(cb, WIDEN, 4, TempReg, t1); /* 4 == dst size */ |
| 6490 | //-- uWiden(cb, 2, True); |
| 6491 | //-- uInstr2(cb, PUT, 4, TempReg, t1, ArchReg, R_EAX); |
| 6492 | //-- DIP("cwd\n"); |
| 6493 | //-- } else { |
| 6494 | //-- vg_assert(sz == 2); |
| 6495 | //-- uInstr2(cb, GET, 1, ArchReg, R_EAX, TempReg, t1); |
| 6496 | //-- uInstr1(cb, WIDEN, 2, TempReg, t1); /* 2 == dst size */ |
| 6497 | //-- uWiden(cb, 1, True); |
| 6498 | //-- uInstr2(cb, PUT, 2, TempReg, t1, ArchReg, R_EAX); |
| 6499 | //-- DIP("cbw\n"); |
| 6500 | //-- } |
| 6501 | //-- break; |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 6502 | |
| 6503 | case 0x99: /* CWD/CDQ */ |
| 6504 | ty = szToITy(sz); |
| 6505 | putIReg(sz, R_EDX, |
| 6506 | binop(mkSizedOp(ty,Iop_Sar8), |
| 6507 | getIReg(sz, R_EAX), |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 6508 | mkU8(sz == 2 ? 15 : 31)) ); |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 6509 | DIP(sz == 2 ? "cwdq\n" : "cdqq\n"); |
| 6510 | break; |
| 6511 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 6512 | //-- /* ------------------------ FPU ops -------------------- */ |
| 6513 | //-- |
| 6514 | //-- case 0x9E: /* SAHF */ |
| 6515 | //-- codegen_SAHF ( cb ); |
| 6516 | //-- DIP("sahf\n"); |
| 6517 | //-- break; |
| 6518 | //-- |
| 6519 | //-- case 0x9F: /* LAHF */ |
| 6520 | //-- codegen_LAHF ( cb ); |
| 6521 | //-- DIP("lahf\n"); |
| 6522 | //-- break; |
| 6523 | //-- |
| 6524 | //-- case 0x9B: /* FWAIT */ |
| 6525 | //-- /* ignore? */ |
| 6526 | //-- DIP("fwait\n"); |
| 6527 | //-- break; |
| 6528 | //-- |
sewardj | d1725d1 | 2004-08-12 20:46:53 +0000 | [diff] [blame] | 6529 | case 0xD8: |
| 6530 | case 0xD9: |
| 6531 | case 0xDA: |
| 6532 | case 0xDB: |
| 6533 | case 0xDC: |
| 6534 | case 0xDD: |
| 6535 | case 0xDE: |
| 6536 | case 0xDF: { |
| 6537 | UInt delta0 = delta; |
| 6538 | Bool decode_OK = False; |
| 6539 | delta = dis_FPU ( &decode_OK, sorb, delta ); |
| 6540 | if (!decode_OK) { |
| 6541 | delta = delta0; |
| 6542 | goto decode_failure; |
| 6543 | } |
| 6544 | break; |
| 6545 | } |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 6546 | |
| 6547 | /* ------------------------ INC & DEC ------------------ */ |
| 6548 | |
| 6549 | case 0x40: /* INC eAX */ |
| 6550 | case 0x41: /* INC eCX */ |
| 6551 | case 0x42: /* INC eDX */ |
| 6552 | case 0x43: /* INC eBX */ |
| 6553 | case 0x44: /* INC eSP */ |
| 6554 | case 0x45: /* INC eBP */ |
| 6555 | case 0x46: /* INC eSI */ |
| 6556 | case 0x47: /* INC eDI */ |
| 6557 | vassert(sz == 2 || sz == 4); |
| 6558 | ty = szToITy(sz); |
| 6559 | t1 = newTemp(ty); |
| 6560 | assign( t1, binop(mkSizedOp(ty,Iop_Add8), |
| 6561 | getIReg(sz, (UInt)(opc - 0x40)), |
| 6562 | mkU(ty,1)) ); |
| 6563 | setFlags_INC_DEC( True, t1, ty ); |
| 6564 | putIReg(sz, (UInt)(opc - 0x40), mkexpr(t1)); |
| 6565 | DIP("inc%c %s\n", nameISize(sz), nameIReg(sz,opc-0x40)); |
| 6566 | break; |
| 6567 | |
| 6568 | case 0x48: /* DEC eAX */ |
| 6569 | case 0x49: /* DEC eCX */ |
| 6570 | case 0x4A: /* DEC eDX */ |
| 6571 | case 0x4B: /* DEC eBX */ |
| 6572 | case 0x4C: /* DEC eSP */ |
| 6573 | case 0x4D: /* DEC eBP */ |
| 6574 | case 0x4E: /* DEC eSI */ |
| 6575 | case 0x4F: /* DEC eDI */ |
| 6576 | vassert(sz == 2 || sz == 4); |
| 6577 | ty = szToITy(sz); |
| 6578 | t1 = newTemp(ty); |
| 6579 | assign( t1, binop(mkSizedOp(ty,Iop_Sub8), |
| 6580 | getIReg(sz, (UInt)(opc - 0x48)), |
| 6581 | mkU(ty,1)) ); |
| 6582 | setFlags_INC_DEC( False, t1, ty ); |
| 6583 | putIReg(sz, (UInt)(opc - 0x48), mkexpr(t1)); |
| 6584 | DIP("dec%c %s\n", nameISize(sz), nameIReg(sz,opc-0x48)); |
| 6585 | break; |
| 6586 | |
| 6587 | /* ------------------------ INT ------------------------ */ |
| 6588 | |
| 6589 | case 0xCD: /* INT imm8 */ |
| 6590 | d32 = getIByte(delta); delta++; |
| 6591 | if (d32 != 0x80) goto decode_failure; |
| 6592 | /* It's important that all ArchRegs carry their up-to-date value |
| 6593 | at this point. So we declare an end-of-block here, which |
| 6594 | forces any TempRegs caching ArchRegs to be flushed. */ |
sewardj | 78c19df | 2004-07-12 22:49:27 +0000 | [diff] [blame] | 6595 | jmp_lit(Ijk_Syscall,((Addr32)guest_code)+delta); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 6596 | *isEnd = True; |
| 6597 | DIP("int $0x80\n"); |
| 6598 | break; |
| 6599 | |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 6600 | /* ------------------------ Jcond, byte offset --------- */ |
| 6601 | |
| 6602 | case 0xEB: /* Jb (jump, byte offset) */ |
| 6603 | d32 = (((Addr32)guest_code)+delta+1) + getSDisp8(delta); |
| 6604 | delta++; |
sewardj | 78c19df | 2004-07-12 22:49:27 +0000 | [diff] [blame] | 6605 | jmp_lit(Ijk_Boring,d32); |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 6606 | *isEnd = True; |
| 6607 | DIP("jmp-8 0x%x\n", d32); |
| 6608 | break; |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 6609 | |
| 6610 | case 0xE9: /* Jv (jump, 16/32 offset) */ |
| 6611 | vassert(sz == 4); /* JRS added 2004 July 11 */ |
| 6612 | d32 = (((Addr32)guest_code)+delta+sz) + getSDisp(sz,delta); |
| 6613 | delta += sz; |
sewardj | 78c19df | 2004-07-12 22:49:27 +0000 | [diff] [blame] | 6614 | jmp_lit(Ijk_Boring,d32); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 6615 | *isEnd = True; |
| 6616 | DIP("jmp 0x%x\n", d32); |
| 6617 | break; |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 6618 | |
| 6619 | case 0x70: |
| 6620 | case 0x71: |
| 6621 | case 0x72: /* JBb/JNAEb (jump below) */ |
| 6622 | case 0x73: /* JNBb/JAEb (jump not below) */ |
| 6623 | case 0x74: /* JZb/JEb (jump zero) */ |
| 6624 | case 0x75: /* JNZb/JNEb (jump not zero) */ |
| 6625 | case 0x76: /* JBEb/JNAb (jump below or equal) */ |
| 6626 | case 0x77: /* JNBEb/JAb (jump not below or equal) */ |
| 6627 | case 0x78: /* JSb (jump negative) */ |
| 6628 | case 0x79: /* JSb (jump not negative) */ |
| 6629 | case 0x7A: /* JP (jump parity even) */ |
| 6630 | case 0x7B: /* JNP/JPO (jump parity odd) */ |
| 6631 | case 0x7C: /* JLb/JNGEb (jump less) */ |
| 6632 | case 0x7D: /* JGEb/JNLb (jump greater or equal) */ |
| 6633 | case 0x7E: /* JLEb/JNGb (jump less or equal) */ |
| 6634 | case 0x7F: /* JGb/JNLEb (jump greater) */ |
| 6635 | d32 = (((Addr32)guest_code)+delta+1) + getSDisp8(delta); |
| 6636 | delta++; |
| 6637 | jcc_01((Condcode)(opc - 0x70), (Addr32)(guest_code+delta), d32); |
| 6638 | *isEnd = True; |
| 6639 | DIP("j%s-8 0x%x\n", name_Condcode(opc - 0x70), d32); |
| 6640 | break; |
| 6641 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 6642 | //-- case 0xE3: /* JECXZ or perhaps JCXZ, depending on OSO ? Intel |
| 6643 | //-- manual says it depends on address size override, |
| 6644 | //-- which doesn't sound right to me. */ |
| 6645 | //-- d32 = (eip+1) + getSDisp8(eip); eip++; |
| 6646 | //-- t1 = newTemp(cb); |
| 6647 | //-- uInstr2(cb, GET, 4, ArchReg, R_ECX, TempReg, t1); |
| 6648 | //-- uInstr2(cb, JIFZ, 4, TempReg, t1, Literal, 0); |
| 6649 | //-- uLiteral(cb, d32); |
| 6650 | //-- DIP("j%sz 0x%x\n", nameIReg(sz, R_ECX), d32); |
| 6651 | //-- break; |
| 6652 | //-- |
| 6653 | //-- case 0xE0: /* LOOPNE disp8 */ |
| 6654 | //-- case 0xE1: /* LOOPE disp8 */ |
| 6655 | //-- case 0xE2: /* LOOP disp8 */ |
| 6656 | //-- /* Again, the docs say this uses ECX/CX as a count depending on |
| 6657 | //-- the address size override, not the operand one. Since we |
| 6658 | //-- don't handle address size overrides, I guess that means |
| 6659 | //-- ECX. */ |
| 6660 | //-- d32 = (eip+1) + getSDisp8(eip); eip++; |
| 6661 | //-- t1 = newTemp(cb); |
| 6662 | //-- uInstr2(cb, GET, 4, ArchReg, R_ECX, TempReg, t1); |
| 6663 | //-- uInstr1(cb, DEC, 4, TempReg, t1); |
| 6664 | //-- uInstr2(cb, PUT, 4, TempReg, t1, ArchReg, R_ECX); |
| 6665 | //-- uInstr2(cb, JIFZ, 4, TempReg, t1, Literal, 0); |
| 6666 | //-- uLiteral(cb, eip); |
| 6667 | //-- if (opc == 0xE0 || opc == 0xE1) { /* LOOPE/LOOPNE */ |
| 6668 | //-- jcc_lit(cb, eip, (opc == 0xE1 ? CondNZ : CondZ)); |
| 6669 | //-- } |
| 6670 | //-- jmp_lit(cb, d32); |
| 6671 | //-- *isEnd = True; |
| 6672 | //-- DIP("loop 0x%x\n", d32); |
| 6673 | //-- break; |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 6674 | |
| 6675 | /* ------------------------ IMUL ----------------------- */ |
| 6676 | |
| 6677 | case 0x69: /* IMUL Iv, Ev, Gv */ |
| 6678 | delta = dis_imul_I_E_G ( sorb, sz, delta, sz ); |
| 6679 | break; |
| 6680 | case 0x6B: /* IMUL Ib, Ev, Gv */ |
| 6681 | delta = dis_imul_I_E_G ( sorb, sz, delta, 1 ); |
| 6682 | break; |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 6683 | |
| 6684 | /* ------------------------ MOV ------------------------ */ |
| 6685 | |
| 6686 | case 0x88: /* MOV Gb,Eb */ |
| 6687 | delta = dis_mov_G_E(sorb, 1, delta); |
| 6688 | break; |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 6689 | |
| 6690 | case 0x89: /* MOV Gv,Ev */ |
| 6691 | delta = dis_mov_G_E(sorb, sz, delta); |
| 6692 | break; |
| 6693 | |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 6694 | case 0x8A: /* MOV Eb,Gb */ |
| 6695 | delta = dis_mov_E_G(sorb, 1, delta); |
| 6696 | break; |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 6697 | |
| 6698 | case 0x8B: /* MOV Ev,Gv */ |
| 6699 | delta = dis_mov_E_G(sorb, sz, delta); |
| 6700 | break; |
| 6701 | |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 6702 | case 0x8D: /* LEA M,Gv */ |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 6703 | vassert(sz == 4); |
| 6704 | modrm = getIByte(delta); |
| 6705 | if (epartIsReg(modrm)) |
| 6706 | vpanic("LEA M,Gv: modRM refers to register (x86)"); |
| 6707 | /* NOTE! this is the one place where a segment override prefix |
| 6708 | has no effect on the address calculation. Therefore we pass |
| 6709 | zero instead of sorb here. */ |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 6710 | addr = disAMode ( &alen, /*sorb*/ 0, delta, dis_buf ); |
| 6711 | delta += alen; |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 6712 | putIReg(sz, gregOfRM(modrm), mkexpr(addr)); |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 6713 | DIP("lea%c %s, %s\n", nameISize(sz), dis_buf, |
| 6714 | nameIReg(sz,gregOfRM(modrm))); |
| 6715 | break; |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 6716 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 6717 | //-- case 0x8C: /* MOV Sw,Ew -- MOV from a SEGMENT REGISTER */ |
| 6718 | //-- eip = dis_mov_Sw_Ew(cb, sorb, eip); |
| 6719 | //-- break; |
| 6720 | //-- |
| 6721 | //-- case 0x8E: /* MOV Ew,Sw -- MOV to a SEGMENT REGISTER */ |
| 6722 | //-- eip = dis_mov_Ew_Sw(cb, sorb, eip); |
| 6723 | //-- break; |
| 6724 | //-- |
| 6725 | //-- case 0xA0: /* MOV Ob,AL */ |
| 6726 | //-- sz = 1; |
| 6727 | //-- /* Fall through ... */ |
sewardj | 0c12ea8 | 2004-07-12 08:18:16 +0000 | [diff] [blame] | 6728 | case 0xA1: /* MOV Ov,eAX */ |
| 6729 | d32 = getUDisp32(delta); delta += 4; |
| 6730 | ty = szToITy(sz); |
| 6731 | addr = newTemp(Ity_I32); |
| 6732 | assign( addr, handleSegOverride(sorb, mkU32(d32)) ); |
| 6733 | putIReg(sz, R_EAX, loadLE(ty, mkexpr(addr))); |
| 6734 | DIP("mov%c %s0x%x, %s\n", nameISize(sz), sorbTxt(sorb), |
| 6735 | d32, nameIReg(sz,R_EAX)); |
| 6736 | break; |
| 6737 | |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 6738 | case 0xA2: /* MOV Ob,AL */ |
| 6739 | sz = 1; |
| 6740 | /* Fall through ... */ |
sewardj | 750f407 | 2004-07-26 22:39:11 +0000 | [diff] [blame] | 6741 | case 0xA3: /* MOV eAX,Ov */ |
| 6742 | d32 = getUDisp32(delta); delta += 4; |
| 6743 | ty = szToITy(sz); |
| 6744 | addr = newTemp(Ity_I32); |
| 6745 | assign( addr, handleSegOverride(sorb, mkU32(d32)) ); |
| 6746 | storeLE( mkexpr(addr), getIReg(sz,R_EAX) ); |
| 6747 | DIP("mov%c %s, %s0x%x\n", nameISize(sz), nameIReg(sz,R_EAX), |
| 6748 | sorbTxt(sorb), d32); |
| 6749 | break; |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 6750 | |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 6751 | case 0xB0: /* MOV imm,AL */ |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 6752 | #if 0 |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 6753 | case 0xB1: /* MOV imm,CL */ |
sewardj | 7ed2295 | 2004-07-29 00:09:58 +0000 | [diff] [blame] | 6754 | #endif |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 6755 | case 0xB2: /* MOV imm,DL */ |
sewardj | 7ed2295 | 2004-07-29 00:09:58 +0000 | [diff] [blame] | 6756 | #if 0 |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 6757 | case 0xB3: /* MOV imm,BL */ |
| 6758 | case 0xB4: /* MOV imm,AH */ |
| 6759 | case 0xB5: /* MOV imm,CH */ |
| 6760 | case 0xB6: /* MOV imm,DH */ |
| 6761 | case 0xB7: /* MOV imm,BH */ |
sewardj | 7ed2295 | 2004-07-29 00:09:58 +0000 | [diff] [blame] | 6762 | #endif |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 6763 | d32 = getIByte(delta); delta += 1; |
| 6764 | putIReg(1, opc-0xB0, mkU8(d32)); |
| 6765 | DIP("movb $0x%x,%s\n", d32, nameIReg(1,opc-0xB0)); |
| 6766 | break; |
sewardj | 7ed2295 | 2004-07-29 00:09:58 +0000 | [diff] [blame] | 6767 | |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 6768 | case 0xB8: /* MOV imm,eAX */ |
| 6769 | case 0xB9: /* MOV imm,eCX */ |
| 6770 | case 0xBA: /* MOV imm,eDX */ |
| 6771 | case 0xBB: /* MOV imm,eBX */ |
| 6772 | case 0xBC: /* MOV imm,eSP */ |
| 6773 | case 0xBD: /* MOV imm,eBP */ |
| 6774 | case 0xBE: /* MOV imm,eSI */ |
| 6775 | case 0xBF: /* MOV imm,eDI */ |
| 6776 | d32 = getUDisp(sz,delta); delta += sz; |
| 6777 | putIReg(sz, opc-0xB8, mkU(szToITy(sz), d32)); |
| 6778 | DIP("mov%c $0x%x,%s\n", nameISize(sz), d32, nameIReg(sz,opc-0xB8)); |
| 6779 | break; |
| 6780 | |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 6781 | case 0xC6: /* MOV Ib,Eb */ |
| 6782 | sz = 1; |
| 6783 | goto do_Mov_I_E; |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 6784 | case 0xC7: /* MOV Iv,Ev */ |
| 6785 | goto do_Mov_I_E; |
| 6786 | |
| 6787 | do_Mov_I_E: |
| 6788 | modrm = getIByte(delta); |
| 6789 | if (epartIsReg(modrm)) { |
| 6790 | delta++; /* mod/rm byte */ |
| 6791 | d32 = getUDisp(sz,delta); delta += sz; |
| 6792 | putIReg(sz, eregOfRM(modrm), mkU(szToITy(sz), d32)); |
| 6793 | DIP("mov%c $0x%x, %s\n", nameISize(sz), d32, |
| 6794 | nameIReg(sz,eregOfRM(modrm))); |
| 6795 | vassert(0); |
| 6796 | } else { |
| 6797 | addr = disAMode ( &alen, sorb, delta, dis_buf ); |
| 6798 | delta += alen; |
| 6799 | d32 = getUDisp(sz,delta); delta += sz; |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 6800 | storeLE(mkexpr(addr), mkU(szToITy(sz), d32)); |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 6801 | DIP("mov%c $0x%x, %s\n", nameISize(sz), d32, dis_buf); |
| 6802 | } |
| 6803 | break; |
| 6804 | |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 6805 | /* ------------------------ opl imm, A ----------------- */ |
| 6806 | |
| 6807 | case 0x04: /* ADD Ib, AL */ |
| 6808 | delta = dis_op_imm_A( 1, Iop_Add8, True, delta, "add" ); |
| 6809 | break; |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 6810 | case 0x05: /* ADD Iv, eAX */ |
| 6811 | delta = dis_op_imm_A(sz, Iop_Add8, True, delta, "add" ); |
| 6812 | break; |
| 6813 | |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 6814 | case 0x0C: /* OR Ib, AL */ |
| 6815 | delta = dis_op_imm_A( 1, Iop_Or8, True, delta, "or" ); |
| 6816 | break; |
sewardj | 8229288 | 2004-07-27 00:15:59 +0000 | [diff] [blame] | 6817 | case 0x0D: /* OR Iv, eAX */ |
| 6818 | delta = dis_op_imm_A( sz, Iop_Or8, True, delta, "or" ); |
| 6819 | break; |
| 6820 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 6821 | //-- case 0x14: /* ADC Ib, AL */ |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 6822 | //-- delta = dis_op_imm_A( 1, ADC, True, delta, "adc" ); |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 6823 | //-- break; |
| 6824 | //-- case 0x15: /* ADC Iv, eAX */ |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 6825 | //-- delta = dis_op_imm_A( sz, ADC, True, delta, "adc" ); |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 6826 | //-- break; |
| 6827 | //-- |
| 6828 | //-- case 0x1C: /* SBB Ib, AL */ |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 6829 | //-- delta = dis_op_imm_A( 1, SBB, True, delta, "sbb" ); |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 6830 | //-- break; |
| 6831 | //-- case 0x1D: /* SBB Iv, eAX */ |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 6832 | //-- delta = dis_op_imm_A( sz, SBB, True, delta, "sbb" ); |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 6833 | //-- break; |
| 6834 | //-- |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 6835 | case 0x24: /* AND Ib, AL */ |
| 6836 | delta = dis_op_imm_A( 1, Iop_And8, True, delta, "and" ); |
| 6837 | break; |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 6838 | case 0x25: /* AND Iv, eAX */ |
| 6839 | delta = dis_op_imm_A( sz, Iop_And8, True, delta, "and" ); |
| 6840 | break; |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 6841 | |
| 6842 | case 0x2C: /* SUB Ib, AL */ |
| 6843 | delta = dis_op_imm_A(1, Iop_Sub8, True, delta, "sub" ); |
| 6844 | break; |
sewardj | 6851154 | 2004-07-28 00:15:44 +0000 | [diff] [blame] | 6845 | case 0x2D: /* SUB Iv, eAX */ |
| 6846 | delta = dis_op_imm_A( sz, Iop_Sub8, True, delta, "sub" ); |
| 6847 | break; |
| 6848 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 6849 | //-- case 0x34: /* XOR Ib, AL */ |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 6850 | //-- delta = dis_op_imm_A( 1, XOR, True, delta, "xor" ); |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 6851 | //-- break; |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 6852 | case 0x35: /* XOR Iv, eAX */ |
| 6853 | delta = dis_op_imm_A( sz, Iop_Xor8, True, delta, "xor" ); |
| 6854 | break; |
| 6855 | |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 6856 | case 0x3C: /* CMP Ib, AL */ |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 6857 | delta = dis_op_imm_A( 1, Iop_Sub8, False, delta, "cmp" ); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 6858 | break; |
| 6859 | case 0x3D: /* CMP Iv, eAX */ |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 6860 | delta = dis_op_imm_A( sz, Iop_Sub8, False, delta, "cmp" ); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 6861 | break; |
| 6862 | |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 6863 | case 0xA8: /* TEST Ib, AL */ |
| 6864 | delta = dis_op_imm_A( 1, Iop_And8, False, delta, "test" ); |
| 6865 | break; |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 6866 | case 0xA9: /* TEST Iv, eAX */ |
| 6867 | delta = dis_op_imm_A( sz, Iop_And8, False, delta, "test" ); |
| 6868 | break; |
| 6869 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 6870 | //-- /* ------------------------ opl Ev, Gv ----------------- */ |
| 6871 | //-- |
| 6872 | //-- case 0x02: /* ADD Eb,Gb */ |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 6873 | //-- delta = dis_op2_E_G ( cb, sorb, False, ADD, True, 1, delta, "add" ); |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 6874 | //-- break; |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 6875 | case 0x03: /* ADD Ev,Gv */ |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 6876 | delta = dis_op2_E_G ( sorb, False, Iop_Add8, True, sz, delta, "add" ); |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 6877 | break; |
| 6878 | |
sewardj | 7ed2295 | 2004-07-29 00:09:58 +0000 | [diff] [blame] | 6879 | case 0x0A: /* OR Eb,Gb */ |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 6880 | delta = dis_op2_E_G ( sorb, False, Iop_Or8, True, 1, delta, "or" ); |
sewardj | 7ed2295 | 2004-07-29 00:09:58 +0000 | [diff] [blame] | 6881 | break; |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 6882 | case 0x0B: /* OR Ev,Gv */ |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 6883 | delta = dis_op2_E_G ( sorb, False, Iop_Or8, True, sz, delta, "or" ); |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 6884 | break; |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 6885 | //-- |
| 6886 | //-- case 0x12: /* ADC Eb,Gb */ |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 6887 | //-- delta = dis_op2_E_G ( sorb, True, ADC, True, 1, delta, "adc" ); |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 6888 | //-- break; |
| 6889 | //-- case 0x13: /* ADC Ev,Gv */ |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 6890 | //-- delta = dis_op2_E_G ( sorb, True, ADC, True, sz, delta, "adc" ); |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 6891 | //-- break; |
| 6892 | //-- |
| 6893 | //-- case 0x1A: /* SBB Eb,Gb */ |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 6894 | //-- delta = dis_op2_E_G ( sorb, True, SBB, True, 1, delta, "sbb" ); |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 6895 | //-- break; |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 6896 | case 0x1B: /* SBB Ev,Gv */ |
| 6897 | delta = dis_op2_E_G ( sorb, True, Iop_Sub8, True, sz, delta, "sbb" ); |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 6898 | break; |
| 6899 | |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 6900 | //-- case 0x22: /* AND Eb,Gb */ |
| 6901 | //-- delta = dis_op2_E_G ( sorb, False, AND, True, 1, delta, "and" ); |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 6902 | //-- break; |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 6903 | case 0x23: /* AND Ev,Gv */ |
| 6904 | delta = dis_op2_E_G ( sorb, False, Iop_And8, True, sz, delta, "and" ); |
| 6905 | break; |
| 6906 | |
| 6907 | case 0x2A: /* SUB Eb,Gb */ |
| 6908 | delta = dis_op2_E_G ( sorb, False, Iop_Sub8, True, 1, delta, "sub" ); |
| 6909 | break; |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 6910 | case 0x2B: /* SUB Ev,Gv */ |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 6911 | delta = dis_op2_E_G ( sorb, False, Iop_Sub8, True, sz, delta, "sub" ); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 6912 | break; |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 6913 | |
| 6914 | case 0x32: /* XOR Eb,Gb */ |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 6915 | delta = dis_op2_E_G ( sorb, False, Iop_Xor8, True, 1, delta, "xor" ); |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 6916 | break; |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 6917 | case 0x33: /* XOR Ev,Gv */ |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 6918 | delta = dis_op2_E_G ( sorb, False, Iop_Xor8, True, sz, delta, "xor" ); |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 6919 | break; |
| 6920 | |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 6921 | case 0x3A: /* CMP Eb,Gb */ |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 6922 | delta = dis_op2_E_G ( sorb, False, Iop_Sub8, False, 1, delta, "cmp" ); |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 6923 | break; |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 6924 | case 0x3B: /* CMP Ev,Gv */ |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 6925 | delta = dis_op2_E_G ( sorb, False, Iop_Sub8, False, sz, delta, "cmp" ); |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 6926 | break; |
| 6927 | |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 6928 | case 0x84: /* TEST Eb,Gb */ |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 6929 | delta = dis_op2_E_G ( sorb, False, Iop_And8, False, 1, delta, "test" ); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 6930 | break; |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 6931 | case 0x85: /* TEST Ev,Gv */ |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 6932 | delta = dis_op2_E_G ( sorb, False, Iop_And8, False, sz, delta, "test" ); |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 6933 | break; |
| 6934 | |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 6935 | /* ------------------------ opl Gv, Ev ----------------- */ |
| 6936 | |
| 6937 | case 0x00: /* ADD Gb,Eb */ |
| 6938 | delta = dis_op2_G_E ( sorb, False, Iop_Add8, True, 1, delta, "add" ); |
| 6939 | break; |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 6940 | case 0x01: /* ADD Gv,Ev */ |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 6941 | delta = dis_op2_G_E ( sorb, False, Iop_Add8, True, sz, delta, "add" ); |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 6942 | break; |
| 6943 | |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 6944 | case 0x08: /* OR Gb,Eb */ |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 6945 | delta = dis_op2_G_E ( sorb, False, Iop_Or8, True, 1, delta, "or" ); |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 6946 | break; |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 6947 | case 0x09: /* OR Gv,Ev */ |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 6948 | delta = dis_op2_G_E ( sorb, False, Iop_Or8, True, sz, delta, "or" ); |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 6949 | break; |
| 6950 | |
sewardj | a238471 | 2004-07-29 14:36:40 +0000 | [diff] [blame] | 6951 | case 0x10: /* ADC Gb,Eb */ |
| 6952 | delta = dis_op2_G_E ( sorb, True, Iop_Add8, True, 1, delta, "adc" ); |
| 6953 | break; |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 6954 | case 0x11: /* ADC Gv,Ev */ |
| 6955 | delta = dis_op2_G_E ( sorb, True, Iop_Add8, True, sz, delta, "adc" ); |
| 6956 | break; |
| 6957 | |
sewardj | a238471 | 2004-07-29 14:36:40 +0000 | [diff] [blame] | 6958 | case 0x18: /* SBB Gb,Eb */ |
| 6959 | delta = dis_op2_G_E ( sorb, True, Iop_Sub8, True, 1, delta, "sbb" ); |
| 6960 | break; |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 6961 | case 0x19: /* SBB Gv,Ev */ |
| 6962 | delta = dis_op2_G_E ( sorb, True, Iop_Sub8, True, sz, delta, "sbb" ); |
| 6963 | break; |
| 6964 | |
sewardj | a238471 | 2004-07-29 14:36:40 +0000 | [diff] [blame] | 6965 | case 0x20: /* AND Gb,Eb */ |
| 6966 | delta = dis_op2_G_E ( sorb, False, Iop_And8, True, 1, delta, "and" ); |
| 6967 | break; |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 6968 | case 0x21: /* AND Gv,Ev */ |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 6969 | delta = dis_op2_G_E ( sorb, False, Iop_And8, True, sz, delta, "and" ); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 6970 | break; |
| 6971 | |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 6972 | case 0x28: /* SUB Gb,Eb */ |
| 6973 | delta = dis_op2_G_E ( sorb, False, Iop_Sub8, True, 1, delta, "sub" ); |
| 6974 | break; |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 6975 | case 0x29: /* SUB Gv,Ev */ |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 6976 | delta = dis_op2_G_E ( sorb, False, Iop_Sub8, True, sz, delta, "sub" ); |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 6977 | break; |
| 6978 | |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 6979 | case 0x30: /* XOR Gb,Eb */ |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 6980 | delta = dis_op2_G_E ( sorb, False, Iop_Xor8, True, 1, delta, "xor" ); |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 6981 | break; |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 6982 | case 0x31: /* XOR Gv,Ev */ |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 6983 | delta = dis_op2_G_E ( sorb, False, Iop_Xor8, True, sz, delta, "xor" ); |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 6984 | break; |
| 6985 | |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 6986 | case 0x38: /* CMP Gb,Eb */ |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 6987 | delta = dis_op2_G_E ( sorb, False, Iop_Sub8, False, 1, delta, "cmp" ); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 6988 | break; |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 6989 | case 0x39: /* CMP Gv,Ev */ |
sewardj | caca9d0 | 2004-07-28 07:11:32 +0000 | [diff] [blame] | 6990 | delta = dis_op2_G_E ( sorb, False, Iop_Sub8, False, sz, delta, "cmp" ); |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 6991 | break; |
| 6992 | |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 6993 | /* ------------------------ POP ------------------------ */ |
| 6994 | |
| 6995 | case 0x58: /* POP eAX */ |
| 6996 | case 0x59: /* POP eCX */ |
| 6997 | case 0x5A: /* POP eDX */ |
| 6998 | case 0x5B: /* POP eBX */ |
| 6999 | case 0x5D: /* POP eBP */ |
| 7000 | case 0x5E: /* POP eSI */ |
| 7001 | case 0x5F: /* POP eDI */ |
| 7002 | case 0x5C: /* POP eSP */ |
| 7003 | vassert(sz == 2 || sz == 4); |
| 7004 | t1 = newTemp(szToITy(sz)); t2 = newTemp(Ity_I32); |
| 7005 | assign(t2, getIReg(4, R_ESP)); |
| 7006 | assign(t1, loadLE(szToITy(sz),mkexpr(t2))); |
| 7007 | putIReg(4, R_ESP, binop(Iop_Add32, mkexpr(t2), mkU32(sz))); |
| 7008 | putIReg(sz, opc-0x58, mkexpr(t1)); |
| 7009 | DIP("pop%c %s\n", nameISize(sz), nameIReg(sz,opc-0x58)); |
| 7010 | break; |
| 7011 | |
sewardj | a238471 | 2004-07-29 14:36:40 +0000 | [diff] [blame] | 7012 | case 0x9D: /* POPF */ |
| 7013 | vassert(sz == 2 || sz == 4); |
| 7014 | vassert(sz == 4); // until we know a sz==2 test case exists |
| 7015 | t1 = newTemp(Ity_I32); t2 = newTemp(Ity_I32); |
| 7016 | assign(t2, getIReg(4, R_ESP)); |
sewardj | c22a6fd | 2004-07-29 23:41:47 +0000 | [diff] [blame] | 7017 | assign(t1, widenUto32(loadLE(szToITy(sz),mkexpr(t2)))); |
sewardj | a238471 | 2004-07-29 14:36:40 +0000 | [diff] [blame] | 7018 | putIReg(4, R_ESP, binop(Iop_Add32, mkexpr(t2), mkU32(sz))); |
| 7019 | /* t1 is the flag word. Mask out everything OSZACP and |
| 7020 | set the flags thunk to CC_OP_COPY. */ |
| 7021 | stmt( IRStmt_Put( OFFB_CC_OP, mkU32(CC_OP_COPY) )); |
| 7022 | stmt( IRStmt_Put( OFFB_CC_DST, mkU32(0) )); |
| 7023 | stmt( IRStmt_Put( OFFB_CC_SRC, |
| 7024 | binop(Iop_And32, |
| 7025 | mkexpr(t1), |
| 7026 | mkU32( CC_MASK_C | CC_MASK_P | CC_MASK_A |
| 7027 | | CC_MASK_Z | CC_MASK_S| CC_MASK_O ) |
| 7028 | ) |
| 7029 | ) |
| 7030 | ); |
| 7031 | |
| 7032 | /* Also need to set the D flag, which is held in bit 10 of t1. |
| 7033 | If zero, put 1 in OFFB_DFLAG, else -1 in OFFB_DFLAG. */ |
| 7034 | stmt( IRStmt_Put( |
| 7035 | OFFB_DFLAG, |
| 7036 | IRExpr_Mux0X( |
| 7037 | unop(Iop_32to8, |
| 7038 | binop(Iop_And32, |
| 7039 | binop(Iop_Shr32, mkexpr(t1), mkU8(10)), |
| 7040 | mkU32(1))), |
| 7041 | mkU32(1), |
| 7042 | mkU32(0xFFFFFFFF))) |
| 7043 | ); |
| 7044 | |
| 7045 | DIP("popf%c\n", nameISize(sz)); |
| 7046 | break; |
| 7047 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 7048 | //-- case 0x61: /* POPA */ |
| 7049 | //-- { Int reg; |
| 7050 | //-- /* Just to keep things sane, we assert for a size 4. It's |
| 7051 | //-- probably OK for size 2 as well, but I'd like to find a test |
| 7052 | //-- case; ie, have the assertion fail, before committing to it. |
| 7053 | //-- If it fails for you, uncomment the sz == 2 bit, try again, |
| 7054 | //-- and let me know whether or not it works. (jseward@acm.org). */ |
| 7055 | //-- vg_assert(sz == 4 /* || sz == 2 */); |
| 7056 | //-- |
| 7057 | //-- /* Eight values are popped, one per register, but the value of |
| 7058 | //-- %esp on the stack is ignored and instead incremented (in one |
| 7059 | //-- hit at the end) for each of the values. */ |
| 7060 | //-- t1 = newTemp(cb); t2 = newTemp(cb); t3 = newTemp(cb); |
| 7061 | //-- uInstr2(cb, GET, 4, ArchReg, R_ESP, TempReg, t2); |
| 7062 | //-- uInstr2(cb, MOV, 4, TempReg, t2, TempReg, t3); |
| 7063 | //-- |
| 7064 | //-- /* Do %edi, %esi, %ebp */ |
| 7065 | //-- for (reg = 7; reg >= 5; reg--) { |
| 7066 | //-- uInstr2(cb, LOAD, sz, TempReg, t2, TempReg, t1); |
| 7067 | //-- uInstr2(cb, ADD, 4, Literal, 0, TempReg, t2); |
| 7068 | //-- uLiteral(cb, sz); |
| 7069 | //-- uInstr2(cb, PUT, sz, TempReg, t1, ArchReg, reg); |
| 7070 | //-- } |
| 7071 | //-- /* Ignore (skip) value of %esp on stack. */ |
| 7072 | //-- uInstr2(cb, ADD, 4, Literal, 0, TempReg, t2); |
| 7073 | //-- uLiteral(cb, sz); |
| 7074 | //-- /* Do %ebx, %edx, %ecx, %eax */ |
| 7075 | //-- for (reg = 3; reg >= 0; reg--) { |
| 7076 | //-- uInstr2(cb, LOAD, sz, TempReg, t2, TempReg, t1); |
| 7077 | //-- uInstr2(cb, ADD, 4, Literal, 0, TempReg, t2); |
| 7078 | //-- uLiteral(cb, sz); |
| 7079 | //-- uInstr2(cb, PUT, sz, TempReg, t1, ArchReg, reg); |
| 7080 | //-- } |
| 7081 | //-- uInstr2(cb, ADD, 4, Literal, 0, TempReg, t3); |
| 7082 | //-- uLiteral(cb, sz * 8); /* One 'sz' per register */ |
| 7083 | //-- uInstr2(cb, PUT, 4, TempReg, t3, ArchReg, R_ESP); |
| 7084 | //-- DIP("popa%c\n", nameISize(sz)); |
| 7085 | //-- break; |
| 7086 | //-- } |
| 7087 | //-- |
| 7088 | //-- case 0x8F: /* POPL/POPW m32 */ |
| 7089 | //-- { UInt pair1; |
| 7090 | //-- Int tmpa; |
| 7091 | //-- UChar rm = getIByte(delta); |
| 7092 | //-- |
| 7093 | //-- /* make sure this instruction is correct POP */ |
| 7094 | //-- vg_assert(!epartIsReg(rm) && (gregOfRM(rm) == 0)); |
| 7095 | //-- /* and has correct size */ |
| 7096 | //-- vg_assert(sz == 4); |
| 7097 | //-- |
| 7098 | //-- t1 = newTemp(cb); t3 = newTemp(cb); |
| 7099 | //-- /* set t1 to ESP: t1 = ESP */ |
| 7100 | //-- uInstr2(cb, GET, 4, ArchReg, R_ESP, TempReg, t1); |
| 7101 | //-- /* load M[ESP] to virtual register t3: t3 = M[t1] */ |
| 7102 | //-- uInstr2(cb, LOAD, 4, TempReg, t1, TempReg, t3); |
| 7103 | //-- |
| 7104 | //-- /* increase ESP; must be done before the STORE. Intel manual says: |
| 7105 | //-- If the ESP register is used as a base register for addressing |
| 7106 | //-- a destination operand in memory, the POP instruction computes |
| 7107 | //-- the effective address of the operand after it increments the |
| 7108 | //-- ESP register. |
| 7109 | //-- */ |
| 7110 | //-- uInstr2(cb, ADD, 4, Literal, 0, TempReg, t1); |
| 7111 | //-- uLiteral(cb, sz); |
| 7112 | //-- uInstr2(cb, PUT, 4, TempReg, t1, ArchReg, R_ESP); |
| 7113 | //-- |
| 7114 | //-- /* resolve MODR/M */ |
| 7115 | //-- pair1 = disAMode ( cb, sorb, eip, dis_buf ); |
| 7116 | //-- |
| 7117 | //-- tmpa = LOW24(pair1); |
| 7118 | //-- /* uInstr2(cb, LOAD, sz, TempReg, tmpa, TempReg, tmpa); */ |
| 7119 | //-- /* store value from stack in memory, M[m32] = t3 */ |
| 7120 | //-- uInstr2(cb, STORE, 4, TempReg, t3, TempReg, tmpa); |
| 7121 | //-- |
| 7122 | //-- DIP("popl %s\n", dis_buf); |
| 7123 | //-- |
| 7124 | //-- eip += HI8(pair1); |
| 7125 | //-- break; |
| 7126 | //-- } |
| 7127 | //-- |
| 7128 | //-- case 0x1F: /* POP %DS */ |
| 7129 | //-- dis_pop_segreg( cb, R_DS, sz ); break; |
| 7130 | //-- case 0x07: /* POP %ES */ |
| 7131 | //-- dis_pop_segreg( cb, R_ES, sz ); break; |
| 7132 | //-- case 0x17: /* POP %SS */ |
| 7133 | //-- dis_pop_segreg( cb, R_SS, sz ); break; |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 7134 | |
| 7135 | /* ------------------------ PUSH ----------------------- */ |
| 7136 | |
| 7137 | case 0x50: /* PUSH eAX */ |
| 7138 | case 0x51: /* PUSH eCX */ |
| 7139 | case 0x52: /* PUSH eDX */ |
| 7140 | case 0x53: /* PUSH eBX */ |
| 7141 | case 0x55: /* PUSH eBP */ |
| 7142 | case 0x56: /* PUSH eSI */ |
| 7143 | case 0x57: /* PUSH eDI */ |
| 7144 | case 0x54: /* PUSH eSP */ |
| 7145 | /* This is the Right Way, in that the value to be pushed is |
| 7146 | established before %esp is changed, so that pushl %esp |
| 7147 | correctly pushes the old value. */ |
| 7148 | vassert(sz == 2 || sz == 4); |
| 7149 | ty = sz==2 ? Ity_I16 : Ity_I32; |
| 7150 | t1 = newTemp(ty); t2 = newTemp(ty); |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 7151 | assign(t1, getIReg(sz, opc-0x50)); |
| 7152 | assign(t2, binop(Iop_Sub32, getIReg(4, R_ESP), mkU32(sz))); |
| 7153 | putIReg(4, R_ESP, mkexpr(t2) ); |
| 7154 | storeLE(mkexpr(t2),mkexpr(t1)); |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 7155 | DIP("push%c %s\n", nameISize(sz), nameIReg(sz,opc-0x50)); |
| 7156 | break; |
| 7157 | |
| 7158 | |
sewardj | 0c12ea8 | 2004-07-12 08:18:16 +0000 | [diff] [blame] | 7159 | case 0x68: /* PUSH Iv */ |
| 7160 | d32 = getUDisp(sz,delta); delta += sz; |
| 7161 | goto do_push_I; |
sewardj | 741153c | 2004-07-25 23:39:13 +0000 | [diff] [blame] | 7162 | case 0x6A: /* PUSH Ib, sign-extended to sz */ |
| 7163 | d32 = getSDisp8(delta); delta += 1; |
| 7164 | goto do_push_I; |
sewardj | 0c12ea8 | 2004-07-12 08:18:16 +0000 | [diff] [blame] | 7165 | do_push_I: |
| 7166 | ty = szToITy(sz); |
| 7167 | t1 = newTemp(Ity_I32); t2 = newTemp(ty); |
| 7168 | assign( t1, binop(Iop_Sub32,getIReg(4,R_ESP),mkU32(sz)) ); |
| 7169 | putIReg(4, R_ESP, mkexpr(t1) ); |
| 7170 | storeLE( mkexpr(t1), mkU(ty,d32) ); |
| 7171 | DIP("push%c $0x%x\n", nameISize(sz), d32); |
| 7172 | break; |
| 7173 | |
sewardj | a238471 | 2004-07-29 14:36:40 +0000 | [diff] [blame] | 7174 | case 0x9C: /* PUSHF */ { |
| 7175 | IRTemp t3; |
| 7176 | vassert(sz == 2 || sz == 4); |
| 7177 | vassert(sz == 4); // wait for sz==2 test case |
| 7178 | |
| 7179 | t1 = newTemp(Ity_I32); |
| 7180 | assign( t1, binop(Iop_Sub32,getIReg(4,R_ESP),mkU32(sz)) ); |
| 7181 | putIReg(4, R_ESP, mkexpr(t1) ); |
| 7182 | |
| 7183 | t2 = newTemp(Ity_I32); |
| 7184 | assign( t2, mk_calculate_eflags_all() ); |
| 7185 | |
| 7186 | /* Patch in the D flag. This can simply be the inversion |
| 7187 | of bit 10 of baseBlock[OFFB_DFLAG]. */ |
| 7188 | t3 = newTemp(Ity_I32); |
| 7189 | assign( t3, binop(Iop_Or32, |
| 7190 | mkexpr(t2), |
| 7191 | binop(Iop_And32, |
| 7192 | unop(Iop_Not32, IRExpr_Get(OFFB_DFLAG,Ity_I32)), |
| 7193 | mkU32(1<<10))) |
| 7194 | ); |
| 7195 | /* if sz==2, the stored value needs to be narrowed. */ |
| 7196 | if (sz == 2) |
| 7197 | storeLE( mkexpr(t1), unop(Iop_32to16,mkexpr(t3)) ); |
| 7198 | else |
| 7199 | storeLE( mkexpr(t1), mkexpr(t3) ); |
| 7200 | |
| 7201 | DIP("pushf%c\n", nameISize(sz)); |
| 7202 | break; |
| 7203 | } |
| 7204 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 7205 | //-- case 0x60: /* PUSHA */ |
| 7206 | //-- { Int reg; |
| 7207 | //-- /* Just to keep things sane, we assert for a size 4. It's |
| 7208 | //-- probably OK for size 2 as well, but I'd like to find a test |
| 7209 | //-- case; ie, have the assertion fail, before committing to it. |
| 7210 | //-- If it fails for you, uncomment the sz == 2 bit, try again, |
| 7211 | //-- and let me know whether or not it works. (jseward@acm.org). */ |
| 7212 | //-- vg_assert(sz == 4 /* || sz == 2 */); |
| 7213 | //-- |
| 7214 | //-- /* This is the Right Way, in that the value to be pushed is |
| 7215 | //-- established before %esp is changed, so that pusha |
| 7216 | //-- correctly pushes the old %esp value. New value of %esp is |
| 7217 | //-- pushed at start. */ |
| 7218 | //-- t1 = newTemp(cb); t2 = newTemp(cb); t3 = newTemp(cb); |
| 7219 | //-- t4 = newTemp(cb); |
| 7220 | //-- uInstr2(cb, GET, 4, ArchReg, R_ESP, TempReg, t3); |
| 7221 | //-- uInstr2(cb, MOV, 4, TempReg, t3, TempReg, t2); |
| 7222 | //-- uInstr2(cb, MOV, 4, TempReg, t3, TempReg, t4); |
| 7223 | //-- uInstr2(cb, SUB, 4, Literal, 0, TempReg, t4); |
| 7224 | //-- uLiteral(cb, sz * 8); /* One 'sz' per register. */ |
| 7225 | //-- uInstr2(cb, PUT, 4, TempReg, t4, ArchReg, R_ESP); |
| 7226 | //-- /* Do %eax, %ecx, %edx, %ebx */ |
| 7227 | //-- for (reg = 0; reg <= 3; reg++) { |
| 7228 | //-- uInstr2(cb, GET, sz, ArchReg, reg, TempReg, t1); |
| 7229 | //-- uInstr2(cb, SUB, 4, Literal, 0, TempReg, t2); |
| 7230 | //-- uLiteral(cb, sz); |
| 7231 | //-- uInstr2(cb, STORE, sz, TempReg, t1, TempReg, t2); |
| 7232 | //-- } |
| 7233 | //-- /* Push old value of %esp */ |
| 7234 | //-- uInstr2(cb, SUB, 4, Literal, 0, TempReg, t2); |
| 7235 | //-- uLiteral(cb, sz); |
| 7236 | //-- uInstr2(cb, STORE, sz, TempReg, t3, TempReg, t2); |
| 7237 | //-- /* Do %ebp, %esi, %edi */ |
| 7238 | //-- for (reg = 5; reg <= 7; reg++) { |
| 7239 | //-- uInstr2(cb, GET, sz, ArchReg, reg, TempReg, t1); |
| 7240 | //-- uInstr2(cb, SUB, 4, Literal, 0, TempReg, t2); |
| 7241 | //-- uLiteral(cb, sz); |
| 7242 | //-- uInstr2(cb, STORE, sz, TempReg, t1, TempReg, t2); |
| 7243 | //-- } |
| 7244 | //-- DIP("pusha%c\n", nameISize(sz)); |
| 7245 | //-- break; |
| 7246 | //-- } |
| 7247 | //-- |
| 7248 | //-- case 0x0E: /* PUSH %CS */ |
| 7249 | //-- dis_push_segreg( cb, R_CS, sz ); break; |
| 7250 | //-- case 0x1E: /* PUSH %DS */ |
| 7251 | //-- dis_push_segreg( cb, R_DS, sz ); break; |
| 7252 | //-- case 0x06: /* PUSH %ES */ |
| 7253 | //-- dis_push_segreg( cb, R_ES, sz ); break; |
| 7254 | //-- case 0x16: /* PUSH %SS */ |
| 7255 | //-- dis_push_segreg( cb, R_SS, sz ); break; |
| 7256 | //-- |
| 7257 | //-- /* ------------------------ SCAS et al ----------------- */ |
| 7258 | //-- |
| 7259 | //-- case 0xA4: /* MOVS, no REP prefix */ |
| 7260 | //-- case 0xA5: |
| 7261 | //-- dis_string_op( cb, dis_MOVS, ( opc == 0xA4 ? 1 : sz ), "movs", sorb ); |
| 7262 | //-- break; |
| 7263 | //-- |
| 7264 | //-- case 0xA6: /* CMPSb, no REP prefix */ |
| 7265 | //-- case 0xA7: |
| 7266 | //-- dis_string_op( cb, dis_CMPS, ( opc == 0xA6 ? 1 : sz ), "cmps", sorb ); |
| 7267 | //-- break; |
| 7268 | //-- |
| 7269 | //-- case 0xAA: /* STOS, no REP prefix */ |
| 7270 | //-- case 0xAB: |
| 7271 | //-- dis_string_op( cb, dis_STOS, ( opc == 0xAA ? 1 : sz ), "stos", sorb ); |
| 7272 | //-- break; |
| 7273 | //-- |
| 7274 | //-- case 0xAC: /* LODS, no REP prefix */ |
| 7275 | //-- case 0xAD: |
| 7276 | //-- dis_string_op( cb, dis_LODS, ( opc == 0xAC ? 1 : sz ), "lods", sorb ); |
| 7277 | //-- break; |
| 7278 | //-- |
| 7279 | //-- case 0xAE: /* SCAS, no REP prefix */ |
| 7280 | //-- case 0xAF: |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 7281 | //-- dis_string_op( dis_SCAS, ( opc == 0xAE ? 1 : sz ), "scas", sorb ); |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 7282 | //-- break; |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 7283 | |
| 7284 | |
| 7285 | case 0xFC: /* CLD */ |
sewardj | eeb9ef8 | 2004-07-15 12:39:03 +0000 | [diff] [blame] | 7286 | stmt( IRStmt_Put( OFFB_DFLAG, mkU32(1)) ); |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 7287 | DIP("cld\n"); |
| 7288 | break; |
| 7289 | |
sewardj | 1813dbe | 2004-07-28 17:09:04 +0000 | [diff] [blame] | 7290 | case 0xFD: /* STD */ |
| 7291 | stmt( IRStmt_Put( OFFB_DFLAG, mkU32(0xFFFFFFFF)) ); |
| 7292 | DIP("std\n"); |
| 7293 | break; |
| 7294 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 7295 | //-- case 0xF8: /* CLC */ |
| 7296 | //-- uInstr0(cb, CALLM_S, 0); |
| 7297 | //-- uInstr1(cb, CALLM, 0, Lit16, VGOFF_(helper_CLC)); |
| 7298 | //-- uFlagsRWU(cb, FlagsEmpty, FlagC, FlagsOSZAP); |
| 7299 | //-- uInstr0(cb, CALLM_E, 0); |
| 7300 | //-- DIP("clc\n"); |
| 7301 | //-- break; |
| 7302 | //-- |
| 7303 | //-- case 0xF9: /* STC */ |
| 7304 | //-- uInstr0(cb, CALLM_S, 0); |
| 7305 | //-- uInstr1(cb, CALLM, 0, Lit16, VGOFF_(helper_STC)); |
| 7306 | //-- uFlagsRWU(cb, FlagsEmpty, FlagC, FlagsOSZAP); |
| 7307 | //-- uInstr0(cb, CALLM_E, 0); |
| 7308 | //-- DIP("stc\n"); |
| 7309 | //-- break; |
| 7310 | //-- |
| 7311 | //-- case 0xF5: /* CMC */ |
| 7312 | //-- uInstr0(cb, CALLM_S, 0); |
| 7313 | //-- uInstr1(cb, CALLM, 0, Lit16, VGOFF_(helper_CMC)); |
| 7314 | //-- uFlagsRWU(cb, FlagC, FlagC, FlagsOSZAP); |
| 7315 | //-- uInstr0(cb, CALLM_E, 0); |
| 7316 | //-- DIP("cmc\n"); |
| 7317 | //-- break; |
sewardj | 8229288 | 2004-07-27 00:15:59 +0000 | [diff] [blame] | 7318 | |
| 7319 | /* REPNE prefix insn */ |
| 7320 | case 0xF2: { |
| 7321 | Addr32 eip_orig = guest_eip + delta - 1; |
| 7322 | vassert(sorb == 0); |
| 7323 | abyte = getIByte(delta); delta++; |
| 7324 | |
| 7325 | if (abyte == 0x66) { sz = 2; abyte = getIByte(delta); delta++; } |
| 7326 | *isEnd = True; |
| 7327 | |
| 7328 | switch (abyte) { |
| 7329 | /* According to the Intel manual, "repne movs" should never occur, but |
| 7330 | * in practice it has happened, so allow for it here... */ |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 7331 | case 0xA4: sz = 1; /* REPNE MOVS<sz> */ |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 7332 | //-- case 0xA5: |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 7333 | // dis_REP_op ( CondNZ, dis_MOVS, sz, eip_orig, |
| 7334 | // guest_eip+delta, "repne movs" ); |
| 7335 | // break; |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 7336 | //-- |
| 7337 | //-- case 0xA6: sz = 1; /* REPNE CMPS<sz> */ |
| 7338 | //-- case 0xA7: |
| 7339 | //-- dis_REP_op ( cb, CondNZ, dis_CMPS, sz, eip_orig, eip, "repne cmps" ); |
| 7340 | //-- break; |
| 7341 | //-- |
sewardj | 8229288 | 2004-07-27 00:15:59 +0000 | [diff] [blame] | 7342 | case 0xAE: sz = 1; /* REPNE SCAS<sz> */ |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 7343 | //-- case 0xAF: |
sewardj | 8229288 | 2004-07-27 00:15:59 +0000 | [diff] [blame] | 7344 | dis_REP_op ( CondNZ, dis_SCAS, sz, eip_orig, |
| 7345 | guest_eip+delta, "repne scas" ); |
| 7346 | break; |
| 7347 | |
| 7348 | default: |
| 7349 | goto decode_failure; |
| 7350 | } |
| 7351 | break; |
| 7352 | } |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 7353 | |
| 7354 | /* REP/REPE prefix insn (for SCAS and CMPS, 0xF3 means REPE, |
| 7355 | for the rest, it means REP) */ |
| 7356 | case 0xF3: { |
| 7357 | Addr32 eip_orig = guest_eip + delta - 1; |
| 7358 | vassert(sorb == 0); |
| 7359 | abyte = getIByte(delta); delta++; |
| 7360 | |
| 7361 | if (abyte == 0x66) { sz = 2; abyte = getIByte(delta); delta++; } |
| 7362 | *isEnd = True; |
| 7363 | |
| 7364 | switch (abyte) { |
| 7365 | case 0xA4: sz = 1; /* REP MOVS<sz> */ |
| 7366 | case 0xA5: |
| 7367 | dis_REP_op ( CondAlways, dis_MOVS, sz, eip_orig, |
| 7368 | guest_eip+delta, "rep movs" ); |
| 7369 | break; |
| 7370 | |
| 7371 | case 0xA6: sz = 1; /* REPE CMP<sz> */ |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 7372 | //-- case 0xA7: |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 7373 | dis_REP_op ( CondZ, dis_CMPS, sz, eip_orig, |
| 7374 | guest_eip+delta, "repe cmps" ); |
| 7375 | break; |
| 7376 | |
| 7377 | case 0xAA: sz = 1; /* REP STOS<sz> */ |
| 7378 | case 0xAB: |
| 7379 | dis_REP_op ( CondAlways, dis_STOS, sz, eip_orig, |
| 7380 | guest_eip+delta, "rep stos" ); |
| 7381 | break; |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 7382 | //-- |
| 7383 | //-- case 0xAE: sz = 1; /* REPE SCAS<sz> */ |
| 7384 | //-- case 0xAF: |
| 7385 | //-- dis_REP_op ( cb, CondZ, dis_SCAS, sz, eip_orig, eip, "repe scas" ); |
| 7386 | //-- break; |
| 7387 | //-- |
| 7388 | //-- case 0x90: /* REP NOP (PAUSE) */ |
| 7389 | //-- /* a hint to the P4 re spin-wait loop */ |
| 7390 | //-- DIP("rep nop (P4 pause)\n"); |
| 7391 | //-- jmp_lit(cb, eip); |
| 7392 | //-- LAST_UINSTR(cb).jmpkind = JmpYield; |
| 7393 | //-- break; |
| 7394 | //-- |
| 7395 | //-- case 0xC3: /* REP RET */ |
| 7396 | //-- /* AMD K7/K8-specific optimisation; faster than vanilla RET */ |
| 7397 | //-- dis_ret(cb, 0); |
| 7398 | //-- DIP("rep ret\n"); |
| 7399 | //-- break; |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 7400 | |
| 7401 | default: |
| 7402 | goto decode_failure; |
| 7403 | } |
| 7404 | break; |
| 7405 | } |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 7406 | |
| 7407 | /* ------------------------ XCHG ----------------------- */ |
| 7408 | |
| 7409 | case 0x86: /* XCHG Gb,Eb */ |
| 7410 | sz = 1; |
| 7411 | /* Fall through ... */ |
| 7412 | case 0x87: /* XCHG Gv,Ev */ |
| 7413 | modrm = getIByte(delta); |
| 7414 | ty = szToITy(sz); |
| 7415 | t1 = newTemp(ty); t2 = newTemp(ty); |
| 7416 | if (epartIsReg(modrm)) { |
| 7417 | assign(t1, getIReg(sz, eregOfRM(modrm))); |
| 7418 | assign(t2, getIReg(sz, gregOfRM(modrm))); |
| 7419 | putIReg(sz, gregOfRM(modrm), mkexpr(t1)); |
| 7420 | putIReg(sz, eregOfRM(modrm), mkexpr(t2)); |
| 7421 | delta++; |
| 7422 | DIP("xchg%c %s, %s\n", |
| 7423 | nameISize(sz), nameIReg(sz,gregOfRM(modrm)), |
| 7424 | nameIReg(sz,eregOfRM(modrm))); |
| 7425 | } else { |
sewardj | 0c12ea8 | 2004-07-12 08:18:16 +0000 | [diff] [blame] | 7426 | addr = disAMode ( &alen, sorb, delta, dis_buf ); |
| 7427 | assign( t1, loadLE(ty,mkexpr(addr)) ); |
| 7428 | assign( t2, getIReg(sz,gregOfRM(modrm)) ); |
| 7429 | storeLE( mkexpr(addr), mkexpr(t2) ); |
| 7430 | putIReg( sz, gregOfRM(modrm), mkexpr(t1) ); |
| 7431 | delta += alen; |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 7432 | DIP("xchg%c %s, %s\n", nameISize(sz), |
| 7433 | nameIReg(sz,gregOfRM(modrm)), dis_buf); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 7434 | } |
| 7435 | break; |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 7436 | |
| 7437 | case 0x90: /* XCHG eAX,eAX */ |
| 7438 | DIP("nop\n"); |
| 7439 | break; |
sewardj | 64e1d65 | 2004-07-12 14:00:46 +0000 | [diff] [blame] | 7440 | case 0x91: /* XCHG eAX,eCX */ |
| 7441 | case 0x92: /* XCHG eAX,eDX */ |
| 7442 | case 0x93: /* XCHG eAX,eBX */ |
| 7443 | case 0x94: /* XCHG eAX,eSP */ |
| 7444 | case 0x95: /* XCHG eAX,eBP */ |
| 7445 | case 0x96: /* XCHG eAX,eSI */ |
| 7446 | case 0x97: /* XCHG eAX,eDI */ |
| 7447 | codegen_xchg_eAX_Reg ( sz, opc - 0x90 ); |
| 7448 | break; |
| 7449 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 7450 | //-- /* ------------------------ XLAT ----------------------- */ |
| 7451 | //-- |
| 7452 | //-- case 0xD7: /* XLAT */ |
| 7453 | //-- t1 = newTemp(cb); t2 = newTemp(cb); |
| 7454 | //-- uInstr2(cb, GET, sz, ArchReg, R_EBX, TempReg, t1); /* get eBX */ |
| 7455 | //-- handleSegOverride( cb, sorb, t1 ); /* make t1 DS:eBX */ |
| 7456 | //-- uInstr2(cb, GET, 1, ArchReg, R_AL, TempReg, t2); /* get AL */ |
| 7457 | //-- /* Widen %AL to 32 bits, so it's all defined when we add it. */ |
| 7458 | //-- uInstr1(cb, WIDEN, 4, TempReg, t2); |
| 7459 | //-- uWiden(cb, 1, False); |
| 7460 | //-- uInstr2(cb, ADD, sz, TempReg, t2, TempReg, t1); /* add AL to eBX */ |
| 7461 | //-- uInstr2(cb, LOAD, 1, TempReg, t1, TempReg, t2); /* get byte at t1 into t2 */ |
| 7462 | //-- uInstr2(cb, PUT, 1, TempReg, t2, ArchReg, R_AL); /* put byte into AL */ |
| 7463 | //-- |
| 7464 | //-- DIP("xlat%c [ebx]\n", nameISize(sz)); |
| 7465 | //-- break; |
| 7466 | //-- |
| 7467 | //-- /* ------------------------ IN / OUT ----------------------- */ |
| 7468 | //-- |
| 7469 | //-- case 0xE4: /* IN ib, %al */ |
| 7470 | //-- case 0xE5: /* IN ib, %{e}ax */ |
| 7471 | //-- case 0xEC: /* IN (%dx),%al */ |
| 7472 | //-- case 0xED: /* IN (%dx),%{e}ax */ |
| 7473 | //-- t1 = newTemp(cb); |
| 7474 | //-- t2 = newTemp(cb); |
| 7475 | //-- t3 = newTemp(cb); |
| 7476 | //-- |
| 7477 | //-- uInstr0(cb, CALLM_S, 0); |
| 7478 | //-- /* operand size? */ |
| 7479 | //-- uInstr2(cb, MOV, 4, Literal, 0, TempReg, t1); |
| 7480 | //-- uLiteral(cb, ( opc == 0xE4 || opc == 0xEC ) ? 1 : sz); |
| 7481 | //-- uInstr1(cb, PUSH, 4, TempReg, t1); |
| 7482 | //-- /* port number ? */ |
| 7483 | //-- if ( opc == 0xE4 || opc == 0xE5 ) { |
| 7484 | //-- abyte = getUChar(eip); eip++; |
| 7485 | //-- uInstr2(cb, MOV, 4, Literal, 0, TempReg, t2); |
| 7486 | //-- uLiteral(cb, abyte); |
| 7487 | //-- } |
| 7488 | //-- else |
| 7489 | //-- uInstr2(cb, GET, 4, ArchReg, R_EDX, TempReg, t2); |
| 7490 | //-- |
| 7491 | //-- uInstr1(cb, PUSH, 4, TempReg, t2); |
| 7492 | //-- uInstr1(cb, CALLM, 0, Lit16, VGOFF_(helper_IN)); |
| 7493 | //-- uFlagsRWU(cb, FlagsEmpty, FlagsEmpty, FlagsEmpty); |
| 7494 | //-- uInstr1(cb, POP, 4, TempReg, t2); |
| 7495 | //-- uInstr1(cb, CLEAR, 0, Lit16, 4); |
| 7496 | //-- uInstr0(cb, CALLM_E, 0); |
| 7497 | //-- uInstr2(cb, PUT, 4, TempReg, t2, ArchReg, R_EAX); |
| 7498 | //-- if ( opc == 0xE4 || opc == 0xE5 ) { |
| 7499 | //-- DIP("in 0x%x, %%eax/%%ax/%%al\n", getUChar(eip-1) ); |
| 7500 | //-- } else { |
| 7501 | //-- DIP("in (%%dx), %%eax/%%ax/%%al\n"); |
| 7502 | //-- } |
| 7503 | //-- break; |
| 7504 | //-- case 0xE6: /* OUT %al,ib */ |
| 7505 | //-- case 0xE7: /* OUT %{e}ax,ib */ |
| 7506 | //-- case 0xEE: /* OUT %al,(%dx) */ |
| 7507 | //-- case 0xEF: /* OUT %{e}ax,(%dx) */ |
| 7508 | //-- t1 = newTemp(cb); |
| 7509 | //-- t2 = newTemp(cb); |
| 7510 | //-- t3 = newTemp(cb); |
| 7511 | //-- |
| 7512 | //-- uInstr0(cb, CALLM_S, 0); |
| 7513 | //-- /* operand size? */ |
| 7514 | //-- uInstr2(cb, MOV, 4, Literal, 0, TempReg, t1); |
| 7515 | //-- uLiteral(cb, ( opc == 0xE6 || opc == 0xEE ) ? 1 : sz); |
| 7516 | //-- uInstr1(cb, PUSH, 4, TempReg, t1); |
| 7517 | //-- /* port number ? */ |
| 7518 | //-- if ( opc == 0xE6 || opc == 0xE7 ) { |
| 7519 | //-- abyte = getUChar(eip); eip++; |
| 7520 | //-- uInstr2(cb, MOV, 4, Literal, 0, TempReg, t2); |
| 7521 | //-- uLiteral(cb, abyte); |
| 7522 | //-- } |
| 7523 | //-- else |
| 7524 | //-- uInstr2(cb, GET, 4, ArchReg, R_EDX, TempReg, t2); |
| 7525 | //-- uInstr1(cb, PUSH, 4, TempReg, t2); |
| 7526 | //-- uInstr2(cb, GET, 4, ArchReg, R_EAX, TempReg, t3); |
| 7527 | //-- uInstr1(cb, PUSH, 4, TempReg, t3); |
| 7528 | //-- uInstr1(cb, CALLM, 0, Lit16, VGOFF_(helper_OUT)); |
| 7529 | //-- uFlagsRWU(cb, FlagsEmpty, FlagsEmpty, FlagsEmpty); |
| 7530 | //-- uInstr1(cb, CLEAR, 0, Lit16, 12); |
| 7531 | //-- uInstr0(cb, CALLM_E, 0); |
| 7532 | //-- if ( opc == 0xE4 || opc == 0xE5 ) { |
| 7533 | //-- DIP("out %%eax/%%ax/%%al, 0x%x\n", getUChar(eip-1) ); |
| 7534 | //-- } else { |
| 7535 | //-- DIP("out %%eax/%%ax/%%al, (%%dx)\n"); |
| 7536 | //-- } |
| 7537 | //-- break; |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 7538 | |
| 7539 | /* ------------------------ (Grp1 extensions) ---------- */ |
| 7540 | |
| 7541 | case 0x80: /* Grp1 Ib,Eb */ |
| 7542 | modrm = getIByte(delta); |
| 7543 | am_sz = lengthAMode(delta); |
| 7544 | sz = 1; |
| 7545 | d_sz = 1; |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 7546 | d32 = getUChar(delta + am_sz); |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 7547 | delta = dis_Grp1 ( sorb, delta, modrm, am_sz, d_sz, sz, d32 ); |
| 7548 | break; |
sewardj | e05c42c | 2004-07-08 20:25:10 +0000 | [diff] [blame] | 7549 | |
| 7550 | case 0x81: /* Grp1 Iv,Ev */ |
| 7551 | modrm = getIByte(delta); |
| 7552 | am_sz = lengthAMode(delta); |
| 7553 | d_sz = sz; |
| 7554 | d32 = getUDisp(d_sz, delta + am_sz); |
| 7555 | delta = dis_Grp1 ( sorb, delta, modrm, am_sz, d_sz, sz, d32 ); |
| 7556 | break; |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 7557 | |
| 7558 | case 0x83: /* Grp1 Ib,Ev */ |
| 7559 | modrm = getIByte(delta); |
| 7560 | am_sz = lengthAMode(delta); |
| 7561 | d_sz = 1; |
| 7562 | d32 = getSDisp8(delta + am_sz); |
| 7563 | delta = dis_Grp1 ( sorb, delta, modrm, am_sz, d_sz, sz, d32 ); |
| 7564 | break; |
| 7565 | |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 7566 | /* ------------------------ (Grp2 extensions) ---------- */ |
| 7567 | |
| 7568 | case 0xC0: /* Grp2 Ib,Eb */ |
| 7569 | modrm = getIByte(delta); |
| 7570 | am_sz = lengthAMode(delta); |
| 7571 | d_sz = 1; |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 7572 | d32 = getUChar(delta + am_sz); |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 7573 | sz = 1; |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 7574 | delta = dis_Grp2 ( sorb, delta, modrm, am_sz, d_sz, sz, |
| 7575 | mkU8(d32 & 0xFF), NULL ); |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 7576 | break; |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 7577 | |
| 7578 | case 0xC1: /* Grp2 Ib,Ev */ |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 7579 | modrm = getIByte(delta); |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 7580 | am_sz = lengthAMode(delta); |
| 7581 | d_sz = 1; |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 7582 | d32 = getUChar(delta + am_sz); |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 7583 | delta = dis_Grp2 ( sorb, delta, modrm, am_sz, d_sz, sz, |
| 7584 | mkU8(d32 & 0xFF), NULL ); |
sewardj | e90ad6a | 2004-07-10 19:02:10 +0000 | [diff] [blame] | 7585 | break; |
| 7586 | |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 7587 | case 0xD0: /* Grp2 1,Eb */ |
| 7588 | modrm = getIByte(delta); |
| 7589 | am_sz = lengthAMode(delta); |
| 7590 | d_sz = 0; |
| 7591 | d32 = 1; |
| 7592 | sz = 1; |
| 7593 | delta = dis_Grp2 ( sorb, delta, modrm, am_sz, d_sz, sz, |
| 7594 | mkU8(d32), NULL ); |
| 7595 | break; |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 7596 | |
| 7597 | case 0xD1: /* Grp2 1,Ev */ |
| 7598 | modrm = getUChar(delta); |
| 7599 | am_sz = lengthAMode(delta); |
| 7600 | d_sz = 0; |
| 7601 | d32 = 1; |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 7602 | delta = dis_Grp2 ( sorb, delta, modrm, am_sz, d_sz, sz, |
| 7603 | mkU8(d32), NULL ); |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 7604 | break; |
| 7605 | |
sewardj | 8c7f1ab | 2004-07-29 20:31:09 +0000 | [diff] [blame] | 7606 | case 0xD2: /* Grp2 CL,Eb */ |
| 7607 | modrm = getUChar(delta); |
| 7608 | am_sz = lengthAMode(delta); |
| 7609 | d_sz = 0; |
| 7610 | sz = 1; |
| 7611 | delta = dis_Grp2 ( sorb, delta, modrm, am_sz, d_sz, sz, |
| 7612 | getIReg(1,R_ECX), "%cl" ); |
| 7613 | break; |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 7614 | |
| 7615 | case 0xD3: /* Grp2 CL,Ev */ |
| 7616 | modrm = getIByte(delta); |
| 7617 | am_sz = lengthAMode(delta); |
| 7618 | d_sz = 0; |
| 7619 | delta = dis_Grp2 ( sorb, delta, modrm, am_sz, d_sz, sz, |
sewardj | 6d2638e | 2004-07-15 09:38:27 +0000 | [diff] [blame] | 7620 | getIReg(1,R_ECX), "%cl" ); |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 7621 | break; |
| 7622 | |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 7623 | /* ------------------------ (Grp3 extensions) ---------- */ |
| 7624 | |
| 7625 | case 0xF6: /* Grp3 Eb */ |
| 7626 | delta = dis_Grp3 ( sorb, 1, delta ); |
| 7627 | break; |
| 7628 | case 0xF7: /* Grp3 Ev */ |
| 7629 | delta = dis_Grp3 ( sorb, sz, delta ); |
| 7630 | break; |
| 7631 | |
sewardj | c2ac51e | 2004-07-12 01:03:26 +0000 | [diff] [blame] | 7632 | /* ------------------------ (Grp4 extensions) ---------- */ |
| 7633 | |
| 7634 | case 0xFE: /* Grp4 Eb */ |
| 7635 | delta = dis_Grp4 ( sorb, delta ); |
| 7636 | break; |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 7637 | |
| 7638 | /* ------------------------ (Grp5 extensions) ---------- */ |
| 7639 | |
| 7640 | case 0xFF: /* Grp5 Ev */ |
| 7641 | delta = dis_Grp5 ( sorb, sz, delta, isEnd ); |
| 7642 | break; |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 7643 | |
| 7644 | /* ------------------------ Escapes to 2-byte opcodes -- */ |
| 7645 | |
| 7646 | case 0x0F: { |
| 7647 | opc = getIByte(delta); delta++; |
| 7648 | switch (opc) { |
| 7649 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 7650 | //-- /* =-=-=-=-=-=-=-=-=- Grp8 =-=-=-=-=-=-=-=-=-=-=-= */ |
| 7651 | //-- |
| 7652 | //-- case 0xBA: /* Grp8 Ib,Ev */ |
| 7653 | //-- modrm = getUChar(eip); |
| 7654 | //-- am_sz = lengthAMode(eip); |
| 7655 | //-- d32 = getSDisp8(eip + am_sz); |
| 7656 | //-- eip = dis_Grp8_BT ( cb, sorb, eip, modrm, am_sz, sz, d32 ); |
| 7657 | //-- break; |
| 7658 | //-- |
| 7659 | //-- /* =-=-=-=-=-=-=-=-=- BSF/BSR -=-=-=-=-=-=-=-=-=-= */ |
| 7660 | //-- |
| 7661 | //-- case 0xBC: /* BSF Gv,Ev */ |
| 7662 | //-- eip = dis_bs_E_G ( cb, sorb, sz, eip, True ); |
| 7663 | //-- break; |
| 7664 | //-- case 0xBD: /* BSR Gv,Ev */ |
| 7665 | //-- eip = dis_bs_E_G ( cb, sorb, sz, eip, False ); |
| 7666 | //-- break; |
| 7667 | //-- |
| 7668 | //-- /* =-=-=-=-=-=-=-=-=- BSWAP -=-=-=-=-=-=-=-=-=-=-= */ |
| 7669 | //-- |
| 7670 | //-- case 0xC8: /* BSWAP %eax */ |
| 7671 | //-- case 0xC9: |
| 7672 | //-- case 0xCA: |
| 7673 | //-- case 0xCB: |
| 7674 | //-- case 0xCC: |
| 7675 | //-- case 0xCD: |
| 7676 | //-- case 0xCE: |
| 7677 | //-- case 0xCF: /* BSWAP %edi */ |
| 7678 | //-- /* AFAICS from the Intel docs, this only exists at size 4. */ |
| 7679 | //-- vg_assert(sz == 4); |
| 7680 | //-- t1 = newTemp(cb); |
| 7681 | //-- uInstr2(cb, GET, 4, ArchReg, opc-0xC8, TempReg, t1); |
| 7682 | //-- uInstr1(cb, BSWAP, 4, TempReg, t1); |
| 7683 | //-- uInstr2(cb, PUT, 4, TempReg, t1, ArchReg, opc-0xC8); |
| 7684 | //-- DIP("bswapl %s\n", nameIReg(4, opc-0xC8)); |
| 7685 | //-- break; |
| 7686 | //-- |
| 7687 | //-- /* =-=-=-=-=-=-=-=-=- BT/BTS/BTR/BTC =-=-=-=-=-=-= */ |
| 7688 | //-- |
| 7689 | //-- case 0xA3: /* BT Gv,Ev */ |
| 7690 | //-- eip = dis_bt_G_E ( cb, sorb, sz, eip, BtOpNone ); |
| 7691 | //-- break; |
| 7692 | //-- case 0xB3: /* BTR Gv,Ev */ |
| 7693 | //-- eip = dis_bt_G_E ( cb, sorb, sz, eip, BtOpReset ); |
| 7694 | //-- break; |
| 7695 | //-- case 0xAB: /* BTS Gv,Ev */ |
| 7696 | //-- eip = dis_bt_G_E ( cb, sorb, sz, eip, BtOpSet ); |
| 7697 | //-- break; |
| 7698 | //-- case 0xBB: /* BTC Gv,Ev */ |
| 7699 | //-- eip = dis_bt_G_E ( cb, sorb, sz, eip, BtOpComp ); |
| 7700 | //-- break; |
| 7701 | //-- |
| 7702 | //-- /* =-=-=-=-=-=-=-=-=- CMOV =-=-=-=-=-=-=-=-=-=-=-= */ |
| 7703 | //-- |
| 7704 | //-- case 0x40: |
| 7705 | //-- case 0x41: |
| 7706 | //-- case 0x42: /* CMOVBb/CMOVNAEb (cmov below) */ |
| 7707 | //-- case 0x43: /* CMOVNBb/CMOVAEb (cmov not below) */ |
| 7708 | //-- case 0x44: /* CMOVZb/CMOVEb (cmov zero) */ |
| 7709 | //-- case 0x45: /* CMOVNZb/CMOVNEb (cmov not zero) */ |
| 7710 | //-- case 0x46: /* CMOVBEb/CMOVNAb (cmov below or equal) */ |
| 7711 | //-- case 0x47: /* CMOVNBEb/CMOVAb (cmov not below or equal) */ |
| 7712 | //-- case 0x48: /* CMOVSb (cmov negative) */ |
| 7713 | //-- case 0x49: /* CMOVSb (cmov not negative) */ |
| 7714 | //-- case 0x4A: /* CMOVP (cmov parity even) */ |
| 7715 | //-- case 0x4B: /* CMOVNP (cmov parity odd) */ |
| 7716 | //-- case 0x4C: /* CMOVLb/CMOVNGEb (cmov less) */ |
| 7717 | //-- case 0x4D: /* CMOVGEb/CMOVNLb (cmov greater or equal) */ |
| 7718 | //-- case 0x4E: /* CMOVLEb/CMOVNGb (cmov less or equal) */ |
| 7719 | //-- case 0x4F: /* CMOVGb/CMOVNLEb (cmov greater) */ |
| 7720 | //-- eip = dis_cmov_E_G(cb, sorb, sz, (Condcode)(opc - 0x40), eip); |
| 7721 | //-- break; |
| 7722 | //-- |
| 7723 | //-- /* =-=-=-=-=-=-=-=-=- CMPXCHG -=-=-=-=-=-=-=-=-=-= */ |
| 7724 | //-- |
| 7725 | //-- case 0xB0: /* CMPXCHG Gv,Ev */ |
| 7726 | //-- eip = dis_cmpxchg_G_E ( cb, sorb, 1, eip ); |
| 7727 | //-- break; |
| 7728 | //-- case 0xB1: /* CMPXCHG Gv,Ev */ |
| 7729 | //-- eip = dis_cmpxchg_G_E ( cb, sorb, sz, eip ); |
| 7730 | //-- break; |
| 7731 | //-- case 0xC7: /* CMPXCHG8B Gv */ |
| 7732 | //-- eip = dis_cmpxchg8b ( cb, sorb, eip ); |
| 7733 | //-- break; |
| 7734 | //-- |
| 7735 | //-- /* =-=-=-=-=-=-=-=-=- CPUID -=-=-=-=-=-=-=-=-=-=-= */ |
| 7736 | //-- |
| 7737 | //-- case 0xA2: /* CPUID */ |
| 7738 | //-- if (!VG_(cpu_has_feature)(VG_X86_FEAT_CPUID)) |
| 7739 | //-- goto decode_failure; |
| 7740 | //-- |
| 7741 | //-- t1 = newTemp(cb); |
| 7742 | //-- t2 = newTemp(cb); |
| 7743 | //-- t3 = newTemp(cb); |
| 7744 | //-- t4 = newTemp(cb); |
| 7745 | //-- uInstr0(cb, CALLM_S, 0); |
| 7746 | //-- |
| 7747 | //-- uInstr2(cb, GET, 4, ArchReg, R_EAX, TempReg, t1); |
| 7748 | //-- uInstr1(cb, PUSH, 4, TempReg, t1); |
| 7749 | //-- |
| 7750 | //-- uInstr2(cb, MOV, 4, Literal, 0, TempReg, t2); |
| 7751 | //-- uLiteral(cb, 0); |
| 7752 | //-- uInstr1(cb, PUSH, 4, TempReg, t2); |
| 7753 | //-- |
| 7754 | //-- uInstr2(cb, MOV, 4, Literal, 0, TempReg, t3); |
| 7755 | //-- uLiteral(cb, 0); |
| 7756 | //-- uInstr1(cb, PUSH, 4, TempReg, t3); |
| 7757 | //-- |
| 7758 | //-- uInstr2(cb, MOV, 4, Literal, 0, TempReg, t4); |
| 7759 | //-- uLiteral(cb, 0); |
| 7760 | //-- uInstr1(cb, PUSH, 4, TempReg, t4); |
| 7761 | //-- |
| 7762 | //-- uInstr1(cb, CALLM, 0, Lit16, VGOFF_(helper_CPUID)); |
| 7763 | //-- uFlagsRWU(cb, FlagsEmpty, FlagsEmpty, FlagsEmpty); |
| 7764 | //-- |
| 7765 | //-- uInstr1(cb, POP, 4, TempReg, t4); |
| 7766 | //-- uInstr2(cb, PUT, 4, TempReg, t4, ArchReg, R_EDX); |
| 7767 | //-- |
| 7768 | //-- uInstr1(cb, POP, 4, TempReg, t3); |
| 7769 | //-- uInstr2(cb, PUT, 4, TempReg, t3, ArchReg, R_ECX); |
| 7770 | //-- |
| 7771 | //-- uInstr1(cb, POP, 4, TempReg, t2); |
| 7772 | //-- uInstr2(cb, PUT, 4, TempReg, t2, ArchReg, R_EBX); |
| 7773 | //-- |
| 7774 | //-- uInstr1(cb, POP, 4, TempReg, t1); |
| 7775 | //-- uInstr2(cb, PUT, 4, TempReg, t1, ArchReg, R_EAX); |
| 7776 | //-- |
| 7777 | //-- uInstr0(cb, CALLM_E, 0); |
| 7778 | //-- DIP("cpuid\n"); |
| 7779 | //-- break; |
| 7780 | //-- |
sewardj | 9334b0f | 2004-07-10 22:43:54 +0000 | [diff] [blame] | 7781 | /* =-=-=-=-=-=-=-=-=- MOVZX, MOVSX =-=-=-=-=-=-=-= */ |
| 7782 | |
| 7783 | case 0xB6: /* MOVZXb Eb,Gv */ |
| 7784 | delta = dis_movx_E_G ( sorb, delta, 1, 4, False ); |
| 7785 | break; |
sewardj | 940e8c9 | 2004-07-11 16:53:24 +0000 | [diff] [blame] | 7786 | case 0xB7: /* MOVZXw Ew,Gv */ |
| 7787 | delta = dis_movx_E_G ( sorb, delta, 2, 4, False ); |
| 7788 | break; |
| 7789 | |
sewardj | 0611d80 | 2004-07-11 02:37:54 +0000 | [diff] [blame] | 7790 | case 0xBE: /* MOVSXb Eb,Gv */ |
| 7791 | delta = dis_movx_E_G ( sorb, delta, 1, 4, True ); |
| 7792 | break; |
sewardj | 7ed2295 | 2004-07-29 00:09:58 +0000 | [diff] [blame] | 7793 | case 0xBF: /* MOVSXw Ew,Gv */ |
| 7794 | delta = dis_movx_E_G ( sorb, delta, 2, 4, True ); |
| 7795 | break; |
| 7796 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 7797 | //-- /* =-=-=-=-=-=-=-=-=-=-= MOVNTI -=-=-=-=-=-=-=-=-= */ |
| 7798 | //-- |
| 7799 | //-- case 0xC3: /* MOVNTI Gv,Ev */ |
| 7800 | //-- vg_assert(sz == 4); |
| 7801 | //-- modrm = getUChar(eip); |
| 7802 | //-- vg_assert(!epartIsReg(modrm)); |
| 7803 | //-- t1 = newTemp(cb); |
| 7804 | //-- uInstr2(cb, GET, 4, ArchReg, gregOfRM(modrm), TempReg, t1); |
| 7805 | //-- pair = disAMode ( cb, sorb, eip, dis_buf ); |
| 7806 | //-- t2 = LOW24(pair); |
| 7807 | //-- eip += HI8(pair); |
| 7808 | //-- uInstr2(cb, STORE, 4, TempReg, t1, TempReg, t2); |
| 7809 | //-- DIP("movnti %s,%s\n", nameIReg(4,gregOfRM(modrm)), dis_buf); |
| 7810 | //-- break; |
sewardj | cf780b4 | 2004-07-13 18:42:17 +0000 | [diff] [blame] | 7811 | |
| 7812 | /* =-=-=-=-=-=-=-=-=- MUL/IMUL =-=-=-=-=-=-=-=-=-= */ |
| 7813 | |
| 7814 | case 0xAF: /* IMUL Ev, Gv */ |
| 7815 | delta = dis_mul_E_G ( sorb, sz, delta, True ); |
| 7816 | break; |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 7817 | |
| 7818 | /* =-=-=-=-=-=-=-=-=- Jcond d32 -=-=-=-=-=-=-=-=-= */ |
| 7819 | case 0x80: |
| 7820 | case 0x81: |
| 7821 | case 0x82: /* JBb/JNAEb (jump below) */ |
| 7822 | case 0x83: /* JNBb/JAEb (jump not below) */ |
| 7823 | case 0x84: /* JZb/JEb (jump zero) */ |
| 7824 | case 0x85: /* JNZb/JNEb (jump not zero) */ |
| 7825 | case 0x86: /* JBEb/JNAb (jump below or equal) */ |
| 7826 | case 0x87: /* JNBEb/JAb (jump not below or equal) */ |
| 7827 | case 0x88: /* JSb (jump negative) */ |
| 7828 | case 0x89: /* JSb (jump not negative) */ |
| 7829 | case 0x8A: /* JP (jump parity even) */ |
| 7830 | case 0x8B: /* JNP/JPO (jump parity odd) */ |
| 7831 | case 0x8C: /* JLb/JNGEb (jump less) */ |
| 7832 | case 0x8D: /* JGEb/JNLb (jump greater or equal) */ |
| 7833 | case 0x8E: /* JLEb/JNGb (jump less or equal) */ |
| 7834 | case 0x8F: /* JGb/JNLEb (jump greater) */ |
| 7835 | d32 = (((Addr32)guest_code)+delta+4) + getUDisp32(delta); |
| 7836 | delta += 4; |
| 7837 | jcc_01((Condcode)(opc - 0x80), (Addr32)(guest_code+delta), d32); |
| 7838 | *isEnd = True; |
| 7839 | DIP("j%s-32 0x%x\n", name_Condcode(opc - 0x80), d32); |
| 7840 | break; |
| 7841 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 7842 | //-- |
| 7843 | //-- /* =-=-=-=-=-=-=-=-=- RDTSC -=-=-=-=-=-=-=-=-=-=-= */ |
| 7844 | //-- |
| 7845 | //-- case 0x31: /* RDTSC */ |
| 7846 | //-- t1 = newTemp(cb); |
| 7847 | //-- t2 = newTemp(cb); |
| 7848 | //-- t3 = newTemp(cb); |
| 7849 | //-- uInstr0(cb, CALLM_S, 0); |
| 7850 | //-- // Nb: even though these args aren't used by RDTSC_helper, need |
| 7851 | //-- // them to be defined (for Memcheck). The TempRegs pushed must |
| 7852 | //-- // also be distinct. |
| 7853 | //-- uInstr2(cb, MOV, 4, Literal, 0, TempReg, t1); |
| 7854 | //-- uLiteral(cb, 0); |
| 7855 | //-- uInstr1(cb, PUSH, 4, TempReg, t1); |
| 7856 | //-- uInstr2(cb, MOV, 4, Literal, 0, TempReg, t2); |
| 7857 | //-- uLiteral(cb, 0); |
| 7858 | //-- uInstr1(cb, PUSH, 4, TempReg, t2); |
| 7859 | //-- uInstr1(cb, CALLM, 0, Lit16, VGOFF_(helper_RDTSC)); |
| 7860 | //-- uFlagsRWU(cb, FlagsEmpty, FlagsEmpty, FlagsEmpty); |
| 7861 | //-- uInstr1(cb, POP, 4, TempReg, t3); |
| 7862 | //-- uInstr2(cb, PUT, 4, TempReg, t3, ArchReg, R_EDX); |
| 7863 | //-- uInstr1(cb, POP, 4, TempReg, t3); |
| 7864 | //-- uInstr2(cb, PUT, 4, TempReg, t3, ArchReg, R_EAX); |
| 7865 | //-- uInstr0(cb, CALLM_E, 0); |
| 7866 | //-- DIP("rdtsc\n"); |
| 7867 | //-- break; |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 7868 | |
| 7869 | /* =-=-=-=-=-=-=-=-=- SETcc Eb =-=-=-=-=-=-=-=-=-= */ |
| 7870 | case 0x90: |
| 7871 | case 0x91: |
| 7872 | case 0x92: /* set-Bb/set-NAEb (jump below) */ |
| 7873 | case 0x93: /* set-NBb/set-AEb (jump not below) */ |
| 7874 | case 0x94: /* set-Zb/set-Eb (jump zero) */ |
| 7875 | case 0x95: /* set-NZb/set-NEb (jump not zero) */ |
| 7876 | case 0x96: /* set-BEb/set-NAb (jump below or equal) */ |
| 7877 | case 0x97: /* set-NBEb/set-Ab (jump not below or equal) */ |
| 7878 | case 0x98: /* set-Sb (jump negative) */ |
| 7879 | case 0x99: /* set-Sb (jump not negative) */ |
| 7880 | case 0x9A: /* set-P (jump parity even) */ |
| 7881 | case 0x9B: /* set-NP (jump parity odd) */ |
| 7882 | case 0x9C: /* set-Lb/set-NGEb (jump less) */ |
| 7883 | case 0x9D: /* set-GEb/set-NLb (jump greater or equal) */ |
| 7884 | case 0x9E: /* set-LEb/set-NGb (jump less or equal) */ |
| 7885 | case 0x9F: /* set-Gb/set-NLEb (jump greater) */ |
| 7886 | t1 = newTemp(Ity_I8); |
| 7887 | assign( t1, unop(Iop_1Uto8,calculate_condition(opc-0x90)) ); |
| 7888 | modrm = getIByte(delta); |
| 7889 | if (epartIsReg(modrm)) { |
| 7890 | delta++; |
| 7891 | putIReg(1, eregOfRM(modrm), mkexpr(t1)); |
| 7892 | DIP("set%s %s\n", name_Condcode(opc-0x90), |
| 7893 | nameIReg(1,eregOfRM(modrm))); |
| 7894 | } else { |
sewardj | 750f407 | 2004-07-26 22:39:11 +0000 | [diff] [blame] | 7895 | addr = disAMode ( &alen, sorb, delta, dis_buf ); |
| 7896 | delta += alen; |
| 7897 | storeLE( mkexpr(addr), mkexpr(t1) ); |
| 7898 | DIP("set%s %s\n", name_Condcode(opc-0x90), dis_buf); |
sewardj | 77b86be | 2004-07-11 13:28:24 +0000 | [diff] [blame] | 7899 | } |
| 7900 | break; |
| 7901 | |
sewardj | 180e8b3 | 2004-07-29 01:40:11 +0000 | [diff] [blame] | 7902 | /* =-=-=-=-=-=-=-=-=- SHLD/SHRD -=-=-=-=-=-=-=-=-= */ |
| 7903 | |
| 7904 | case 0xA4: /* SHLDv imm8,Gv,Ev */ |
| 7905 | modrm = getIByte(delta); |
| 7906 | d32 = delta + lengthAMode(delta); |
| 7907 | vex_sprintf(dis_buf, "$%d", delta); |
| 7908 | delta = dis_SHLRD_Gv_Ev ( |
| 7909 | sorb, delta, modrm, sz, |
| 7910 | mkU8(getIByte(d32)), True, /* literal */ |
| 7911 | dis_buf, True ); |
| 7912 | break; |
sewardj | a06e556 | 2004-07-14 13:18:05 +0000 | [diff] [blame] | 7913 | case 0xA5: /* SHLDv %cl,Gv,Ev */ |
| 7914 | modrm = getIByte(delta); |
| 7915 | delta = dis_SHLRD_Gv_Ev ( |
| 7916 | sorb, delta, modrm, sz, |
| 7917 | getIReg(1,R_ECX), False, /* not literal */ |
| 7918 | "%cl", True ); |
| 7919 | break; |
| 7920 | |
sewardj | 6851154 | 2004-07-28 00:15:44 +0000 | [diff] [blame] | 7921 | case 0xAC: /* SHRDv imm8,Gv,Ev */ |
| 7922 | modrm = getIByte(delta); |
| 7923 | d32 = delta + lengthAMode(delta); |
| 7924 | vex_sprintf(dis_buf, "$%d", delta); |
| 7925 | delta = dis_SHLRD_Gv_Ev ( |
| 7926 | sorb, delta, modrm, sz, |
| 7927 | mkU8(getIByte(d32)), True, /* literal */ |
| 7928 | dis_buf, False ); |
| 7929 | break; |
sewardj | a511afc | 2004-07-29 22:26:03 +0000 | [diff] [blame] | 7930 | case 0xAD: /* SHRDv %cl,Gv,Ev */ |
| 7931 | modrm = getIByte(delta); |
| 7932 | delta = dis_SHLRD_Gv_Ev ( |
| 7933 | sorb, delta, modrm, sz, |
| 7934 | getIReg(1,R_ECX), False, /* not literal */ |
| 7935 | "%cl", False ); |
| 7936 | break; |
| 7937 | |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 7938 | //-- /* =-=-=-=-=-=-=-=-=- CMPXCHG -=-=-=-=-=-=-=-=-=-= */ |
| 7939 | //-- |
| 7940 | //-- case 0xC0: /* XADD Gb,Eb */ |
| 7941 | //-- eip = dis_xadd_G_E ( cb, sorb, 1, eip ); |
| 7942 | //-- break; |
| 7943 | //-- case 0xC1: /* XADD Gv,Ev */ |
| 7944 | //-- eip = dis_xadd_G_E ( cb, sorb, sz, eip ); |
| 7945 | //-- break; |
| 7946 | //-- |
| 7947 | //-- /* =-=-=-=-=-=-=-=-=- MMXery =-=-=-=-=-=-=-=-=-=-= */ |
| 7948 | //-- |
| 7949 | //-- case 0x0D: /* PREFETCH / PREFETCHW - 3Dnow!ery*/ |
| 7950 | //-- case 0x18: /* PREFETCHT0/PREFETCHT1/PREFETCHT2/PREFETCHNTA */ |
| 7951 | //-- |
| 7952 | //-- vg_assert(sz == 4); |
| 7953 | //-- modrm = getUChar(eip); |
| 7954 | //-- if (epartIsReg(modrm)) { |
| 7955 | //-- goto decode_failure; |
| 7956 | //-- } |
| 7957 | //-- if (gregOfRM(modrm) > 3) { |
| 7958 | //-- goto decode_failure; |
| 7959 | //-- } |
| 7960 | //-- eip += lengthAMode(eip); |
| 7961 | //-- if (VG_(print_codegen)) { |
| 7962 | //-- UChar* hintstr; |
| 7963 | //-- if (opc == 0x0D) { |
| 7964 | //-- switch (gregOfRM(modrm)) { |
| 7965 | //-- case 0: hintstr = ""; break; |
| 7966 | //-- case 1: hintstr = "w"; break; |
| 7967 | //-- default: goto decode_failure; |
| 7968 | //-- } |
| 7969 | //-- } |
| 7970 | //-- else { |
| 7971 | //-- switch (gregOfRM(modrm)) { |
| 7972 | //-- case 0: hintstr = "nta"; break; |
| 7973 | //-- case 1: hintstr = "t0"; break; |
| 7974 | //-- case 2: hintstr = "t1"; break; |
| 7975 | //-- case 3: hintstr = "t2"; break; |
| 7976 | //-- default: goto decode_failure; |
| 7977 | //-- } |
| 7978 | //-- } |
| 7979 | //-- VG_(printf)("prefetch%s ...\n", hintstr); |
| 7980 | //-- } |
| 7981 | //-- break; |
| 7982 | //-- |
| 7983 | //-- case 0x71: case 0x72: case 0x73: { |
| 7984 | //-- /* (sz==4): PSLL/PSRA/PSRL mmxreg by imm8 */ |
| 7985 | //-- /* (sz==2): PSLL/PSRA/PSRL xmmreg by imm8 */ |
| 7986 | //-- UChar byte1, byte2, byte3, subopc, mmreg; |
| 7987 | //-- vg_assert(sz == 4 || sz == 2); |
| 7988 | //-- byte1 = opc; /* 0x71/72/73 */ |
| 7989 | //-- byte2 = getUChar(eip); eip++; /* amode / sub-opcode */ |
| 7990 | //-- byte3 = getUChar(eip); eip++; /* imm8 */ |
| 7991 | //-- mmreg = byte2 & 7; |
| 7992 | //-- subopc = (byte2 >> 3) & 7; |
| 7993 | //-- if (subopc == 2 || subopc == 6 || subopc == 4) { |
| 7994 | //-- /* 2 == 010 == SRL, 6 == 110 == SLL, 4 == 100 == SRA */ |
| 7995 | //-- /* ok */ |
| 7996 | //-- } else |
| 7997 | //-- if (sz == 2 && opc == 0x73 && (subopc == 7 || subopc == 3)) { |
| 7998 | //-- /* 3 == PSRLDQ, 7 == PSLLDQ */ |
| 7999 | //-- /* This is allowable in SSE. Because sz==2 we fall thru to |
| 8000 | //-- SSE5 below. */ |
| 8001 | //-- } else { |
| 8002 | //-- eip -= (sz==2 ? 3 : 2); |
| 8003 | //-- goto decode_failure; |
| 8004 | //-- } |
| 8005 | //-- if (sz == 4) { |
| 8006 | //-- /* The leading 0x0F is implied for MMX*, so we don't |
| 8007 | //-- include it. */ |
| 8008 | //-- uInstr2(cb, MMX3, 0, |
| 8009 | //-- Lit16, (((UShort)byte1) << 8) | ((UShort)byte2), |
| 8010 | //-- Lit16, ((UShort)byte3) ); |
| 8011 | //-- DIP("ps%s%s $%d, %s\n", |
| 8012 | //-- ( subopc == 2 ? "rl" |
| 8013 | //-- : subopc == 6 ? "ll" |
| 8014 | //-- : subopc == 4 ? "ra" |
| 8015 | //-- : "??"), |
| 8016 | //-- nameMMXGran(opc & 3), (Int)byte3, nameMMXReg(mmreg) ); |
| 8017 | //-- } else { |
| 8018 | //-- /* Whereas we have to include it for SSE. */ |
| 8019 | //-- uInstr3(cb, SSE5, 0, |
| 8020 | //-- Lit16, (((UShort)0x66) << 8) | ((UShort)0x0F), |
| 8021 | //-- Lit16, (((UShort)byte1) << 8) | ((UShort)byte2), |
| 8022 | //-- Lit16, ((UShort)byte3) ); |
| 8023 | //-- DIP("ps%s%s $%d, %s\n", |
| 8024 | //-- ( subopc == 2 ? "rl" |
| 8025 | //-- : subopc == 6 ? "ll" |
| 8026 | //-- : subopc == 4 ? "ra" |
| 8027 | //-- : subopc == 3 ? "(PSRLDQ)" |
| 8028 | //-- : subopc == 7 ? "(PSLLDQ)" |
| 8029 | //-- : "??"), |
| 8030 | //-- nameMMXGran(opc & 3), (Int)byte3, nameXMMReg(mmreg) ); |
| 8031 | //-- } |
| 8032 | //-- break; |
| 8033 | //-- } |
| 8034 | //-- |
| 8035 | //-- case 0x77: /* EMMS */ |
| 8036 | //-- vg_assert(sz == 4); |
| 8037 | //-- uInstr1(cb, MMX1, 0, Lit16, ((UShort)(opc)) ); |
| 8038 | //-- DIP("emms\n"); |
| 8039 | //-- break; |
| 8040 | //-- |
| 8041 | //-- case 0x7E: /* MOVD (src)mmxreg, (dst)ireg-or-mem */ |
| 8042 | //-- vg_assert(sz == 4); |
| 8043 | //-- modrm = getUChar(eip); |
| 8044 | //-- if (epartIsReg(modrm)) { |
| 8045 | //-- eip++; |
| 8046 | //-- t1 = newTemp(cb); |
| 8047 | //-- uInstr2(cb, MMX2_ERegWr, 4, |
| 8048 | //-- Lit16, |
| 8049 | //-- (((UShort)(opc)) << 8) | ((UShort)modrm), |
| 8050 | //-- TempReg, t1 ); |
| 8051 | //-- uInstr2(cb, PUT, 4, TempReg, t1, ArchReg, eregOfRM(modrm)); |
| 8052 | //-- DIP("movd %s, %s\n", |
| 8053 | //-- nameMMXReg(gregOfRM(modrm)), nameIReg(4,eregOfRM(modrm))); |
| 8054 | //-- } else { |
| 8055 | //-- Int tmpa; |
| 8056 | //-- pair = disAMode ( cb, sorb, eip, dis_buf ); |
| 8057 | //-- tmpa = LOW24(pair); |
| 8058 | //-- eip += HI8(pair); |
| 8059 | //-- uInstr2(cb, MMX2_MemWr, 4, |
| 8060 | //-- Lit16, |
| 8061 | //-- (((UShort)(opc)) << 8) | ((UShort)modrm), |
| 8062 | //-- TempReg, tmpa); |
| 8063 | //-- DIP("movd %s, %s\n", nameMMXReg(gregOfRM(modrm)), dis_buf); |
| 8064 | //-- } |
| 8065 | //-- break; |
| 8066 | //-- |
| 8067 | //-- case 0x6E: /* MOVD (src)ireg-or-mem, (dst)mmxreg */ |
| 8068 | //-- vg_assert(sz == 4); |
| 8069 | //-- modrm = getUChar(eip); |
| 8070 | //-- if (epartIsReg(modrm)) { |
| 8071 | //-- eip++; |
| 8072 | //-- t1 = newTemp(cb); |
| 8073 | //-- uInstr2(cb, GET, 4, ArchReg, eregOfRM(modrm), TempReg, t1); |
| 8074 | //-- uInstr2(cb, MMX2_ERegRd, 4, |
| 8075 | //-- Lit16, |
| 8076 | //-- (((UShort)(opc)) << 8) | ((UShort)modrm), |
| 8077 | //-- TempReg, t1 ); |
| 8078 | //-- DIP("movd %s, %s\n", |
| 8079 | //-- nameIReg(4,eregOfRM(modrm)), nameMMXReg(gregOfRM(modrm))); |
| 8080 | //-- } else { |
| 8081 | //-- Int tmpa; |
| 8082 | //-- pair = disAMode ( cb, sorb, eip, dis_buf ); |
| 8083 | //-- tmpa = LOW24(pair); |
| 8084 | //-- eip += HI8(pair); |
| 8085 | //-- uInstr2(cb, MMX2_MemRd, 4, |
| 8086 | //-- Lit16, |
| 8087 | //-- (((UShort)(opc)) << 8) | ((UShort)modrm), |
| 8088 | //-- TempReg, tmpa); |
| 8089 | //-- DIP("movd %s, %s\n", dis_buf, nameMMXReg(gregOfRM(modrm))); |
| 8090 | //-- } |
| 8091 | //-- break; |
| 8092 | //-- |
| 8093 | //-- case 0x6F: /* MOVQ (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8094 | //-- vg_assert(sz == 4); |
| 8095 | //-- modrm = getUChar(eip); |
| 8096 | //-- if (epartIsReg(modrm)) { |
| 8097 | //-- eip++; |
| 8098 | //-- uInstr1(cb, MMX2, 0, |
| 8099 | //-- Lit16, |
| 8100 | //-- (((UShort)(opc)) << 8) | ((UShort)modrm) ); |
| 8101 | //-- DIP("movq %s, %s\n", |
| 8102 | //-- nameMMXReg(eregOfRM(modrm)), nameMMXReg(gregOfRM(modrm))); |
| 8103 | //-- } else { |
| 8104 | //-- Int tmpa; |
| 8105 | //-- pair = disAMode ( cb, sorb, eip, dis_buf ); |
| 8106 | //-- tmpa = LOW24(pair); |
| 8107 | //-- eip += HI8(pair); |
| 8108 | //-- uInstr2(cb, MMX2_MemRd, 8, |
| 8109 | //-- Lit16, |
| 8110 | //-- (((UShort)(opc)) << 8) | ((UShort)modrm), |
| 8111 | //-- TempReg, tmpa); |
| 8112 | //-- DIP("movq %s, %s\n", |
| 8113 | //-- dis_buf, nameMMXReg(gregOfRM(modrm))); |
| 8114 | //-- } |
| 8115 | //-- break; |
| 8116 | //-- |
| 8117 | //-- case 0x7F: /* MOVQ (src)mmxreg, (dst)mmxreg-or-mem */ |
| 8118 | //-- case 0xE7: /* MOVNTQ (src)mmxreg, (dst)mmxreg-or-mem */ |
| 8119 | //-- vg_assert(sz == 4); |
| 8120 | //-- modrm = getUChar(eip); |
| 8121 | //-- if (epartIsReg(modrm)) { |
| 8122 | //-- eip++; |
| 8123 | //-- uInstr1(cb, MMX2, 0, |
| 8124 | //-- Lit16, |
| 8125 | //-- (((UShort)(opc)) << 8) | ((UShort)modrm) ); |
| 8126 | //-- DIP("movq %s, %s\n", |
| 8127 | //-- nameMMXReg(gregOfRM(modrm)), nameMMXReg(eregOfRM(modrm))); |
| 8128 | //-- } else { |
| 8129 | //-- Int tmpa; |
| 8130 | //-- pair = disAMode ( cb, sorb, eip, dis_buf ); |
| 8131 | //-- tmpa = LOW24(pair); |
| 8132 | //-- eip += HI8(pair); |
| 8133 | //-- uInstr2(cb, MMX2_MemWr, 8, |
| 8134 | //-- Lit16, |
| 8135 | //-- (((UShort)(opc)) << 8) | ((UShort)modrm), |
| 8136 | //-- TempReg, tmpa); |
| 8137 | //-- DIP("mov(nt)q %s, %s\n", |
| 8138 | //-- nameMMXReg(gregOfRM(modrm)), dis_buf); |
| 8139 | //-- } |
| 8140 | //-- break; |
| 8141 | //-- |
| 8142 | //-- case 0xFC: case 0xFD: case 0xFE: |
| 8143 | //-- /* PADDgg (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8144 | //-- vg_assert(sz == 4); |
| 8145 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "padd", True ); |
| 8146 | //-- break; |
| 8147 | //-- |
| 8148 | //-- case 0xD4: |
| 8149 | //-- /* PADDQ (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8150 | //-- vg_assert(sz == 4); |
| 8151 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "paddq", False ); |
| 8152 | //-- break; |
| 8153 | //-- |
| 8154 | //-- case 0xEC: case 0xED: |
| 8155 | //-- /* PADDSgg (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8156 | //-- vg_assert(sz == 4); |
| 8157 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "padds", True ); |
| 8158 | //-- break; |
| 8159 | //-- |
| 8160 | //-- case 0xDC: case 0xDD: |
| 8161 | //-- /* PADDUSgg (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8162 | //-- vg_assert(sz == 4); |
| 8163 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "paddus", True ); |
| 8164 | //-- break; |
| 8165 | //-- |
| 8166 | //-- case 0xF8: case 0xF9: case 0xFA: case 0xFB: |
| 8167 | //-- /* PSUBgg (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8168 | //-- vg_assert(sz == 4); |
| 8169 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "psub", True ); |
| 8170 | //-- break; |
| 8171 | //-- |
| 8172 | //-- case 0xE8: case 0xE9: |
| 8173 | //-- /* PSUBSgg (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8174 | //-- vg_assert(sz == 4); |
| 8175 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "psubs", True ); |
| 8176 | //-- break; |
| 8177 | //-- |
| 8178 | //-- case 0xD8: case 0xD9: |
| 8179 | //-- /* PSUBUSgg (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8180 | //-- vg_assert(sz == 4); |
| 8181 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "psubus", True ); |
| 8182 | //-- break; |
| 8183 | //-- |
| 8184 | //-- case 0xE4: /* PMULHUW (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8185 | //-- vg_assert(sz == 4); |
| 8186 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "pmulhuw", False ); |
| 8187 | //-- break; |
| 8188 | //-- |
| 8189 | //-- case 0xE5: /* PMULHW (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8190 | //-- vg_assert(sz == 4); |
| 8191 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "pmulhw", False ); |
| 8192 | //-- break; |
| 8193 | //-- |
| 8194 | //-- case 0xD5: /* PMULLW (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8195 | //-- vg_assert(sz == 4); |
| 8196 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "pmullw", False ); |
| 8197 | //-- break; |
| 8198 | //-- |
| 8199 | //-- case 0xF4: /* PMULUDQ (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8200 | //-- vg_assert(sz == 4); |
| 8201 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "pmuludq", False ); |
| 8202 | //-- break; |
| 8203 | //-- |
| 8204 | //-- case 0xF5: /* PMADDWD (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8205 | //-- vg_assert(sz == 4); |
| 8206 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "pmaddwd", False ); |
| 8207 | //-- break; |
| 8208 | //-- |
| 8209 | //-- case 0x74: case 0x75: case 0x76: |
| 8210 | //-- /* PCMPEQgg (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8211 | //-- vg_assert(sz == 4); |
| 8212 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "pcmpeq", True ); |
| 8213 | //-- break; |
| 8214 | //-- |
| 8215 | //-- case 0x64: case 0x65: case 0x66: |
| 8216 | //-- /* PCMPGTgg (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8217 | //-- vg_assert(sz == 4); |
| 8218 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "pcmpgt", True ); |
| 8219 | //-- break; |
| 8220 | //-- |
| 8221 | //-- case 0x6B: /* PACKSSDW (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8222 | //-- vg_assert(sz == 4); |
| 8223 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "packssdw", False ); |
| 8224 | //-- break; |
| 8225 | //-- |
| 8226 | //-- case 0x63: /* PACKSSWB (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8227 | //-- vg_assert(sz == 4); |
| 8228 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "packsswb", False ); |
| 8229 | //-- break; |
| 8230 | //-- |
| 8231 | //-- case 0x67: /* PACKUSWB (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8232 | //-- vg_assert(sz == 4); |
| 8233 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "packuswb", False ); |
| 8234 | //-- break; |
| 8235 | //-- |
| 8236 | //-- case 0x68: case 0x69: case 0x6A: |
| 8237 | //-- /* PUNPCKHgg (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8238 | //-- vg_assert(sz == 4); |
| 8239 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "punpckh", True ); |
| 8240 | //-- break; |
| 8241 | //-- |
| 8242 | //-- case 0x60: case 0x61: case 0x62: |
| 8243 | //-- /* PUNPCKLgg (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8244 | //-- vg_assert(sz == 4); |
| 8245 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "punpckl", True ); |
| 8246 | //-- break; |
| 8247 | //-- |
| 8248 | //-- case 0xDB: /* PAND (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8249 | //-- vg_assert(sz == 4); |
| 8250 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "pand", False ); |
| 8251 | //-- break; |
| 8252 | //-- |
| 8253 | //-- case 0xDF: /* PANDN (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8254 | //-- vg_assert(sz == 4); |
| 8255 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "pandn", False ); |
| 8256 | //-- break; |
| 8257 | //-- |
| 8258 | //-- case 0xEB: /* POR (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8259 | //-- vg_assert(sz == 4); |
| 8260 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "por", False ); |
| 8261 | //-- break; |
| 8262 | //-- |
| 8263 | //-- case 0xEF: /* PXOR (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8264 | //-- vg_assert(sz == 4); |
| 8265 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "pxor", False ); |
| 8266 | //-- break; |
| 8267 | //-- |
| 8268 | //-- case 0xF1: case 0xF2: case 0xF3: |
| 8269 | //-- /* PSLLgg (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8270 | //-- vg_assert(sz == 4); |
| 8271 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "psll", True ); |
| 8272 | //-- break; |
| 8273 | //-- |
| 8274 | //-- case 0xD1: case 0xD2: case 0xD3: |
| 8275 | //-- /* PSRLgg (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8276 | //-- vg_assert(sz == 4); |
| 8277 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "psrl", True ); |
| 8278 | //-- break; |
| 8279 | //-- |
| 8280 | //-- case 0xE1: case 0xE2: |
| 8281 | //-- /* PSRAgg (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8282 | //-- vg_assert(sz == 4); |
| 8283 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "psra", True ); |
| 8284 | //-- break; |
| 8285 | //-- |
| 8286 | //-- case 0xDA: |
| 8287 | //-- /* PMINUB (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8288 | //-- vg_assert(sz == 4); |
| 8289 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "pminub", False ); |
| 8290 | //-- break; |
| 8291 | //-- |
| 8292 | //-- case 0xDE: |
| 8293 | //-- /* PMAXUB (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8294 | //-- vg_assert(sz == 4); |
| 8295 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "pmaxub", False ); |
| 8296 | //-- break; |
| 8297 | //-- |
| 8298 | //-- case 0xEA: |
| 8299 | //-- /* PMINSW (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8300 | //-- vg_assert(sz == 4); |
| 8301 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "pminsw", False ); |
| 8302 | //-- break; |
| 8303 | //-- |
| 8304 | //-- case 0xEE: |
| 8305 | //-- /* PMAXSW (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8306 | //-- vg_assert(sz == 4); |
| 8307 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "pmaxsw", False ); |
| 8308 | //-- break; |
| 8309 | //-- |
| 8310 | //-- case 0xE0: |
| 8311 | //-- /* PAVGB (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8312 | //-- vg_assert(sz == 4); |
| 8313 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "pavgb", False ); |
| 8314 | //-- break; |
| 8315 | //-- |
| 8316 | //-- case 0xE3: |
| 8317 | //-- /* PAVGW (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8318 | //-- vg_assert(sz == 4); |
| 8319 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "pavgw", False ); |
| 8320 | //-- break; |
| 8321 | //-- |
| 8322 | //-- case 0xF6: |
| 8323 | //-- /* PSADBW (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8324 | //-- vg_assert(sz == 4); |
| 8325 | //-- eip = dis_MMXop_regmem_to_reg ( cb, sorb, eip, opc, "psadbw", False ); |
| 8326 | //-- break; |
| 8327 | //-- |
| 8328 | //-- case 0x70: |
| 8329 | //-- /* PSHUFW imm8, (src)mmxreg-or-mem, (dst)mmxreg */ |
| 8330 | //-- vg_assert(sz == 4); |
| 8331 | //-- eip = dis_MMXop_regmem_to_reg_Imm8 ( cb, sorb, eip, opc, "pshufw", False ); |
| 8332 | //-- break; |
| 8333 | //-- |
| 8334 | //-- case 0xD7: |
| 8335 | //-- /* PMOVMSKB (src)mmxreg, (dst)ireg */ |
| 8336 | //-- vg_assert(sz == 4); |
| 8337 | //-- modrm = getUChar(eip); |
| 8338 | //-- vg_assert(epartIsReg(modrm)); |
| 8339 | //-- t1 = newTemp(cb); |
| 8340 | //-- uInstr3(cb, SSE2g_RegWr, 4, |
| 8341 | //-- Lit16, (((UShort)(0x0F)) << 8) | (UShort)(opc), |
| 8342 | //-- Lit16, (UShort)modrm, |
| 8343 | //-- TempReg, t1 ); |
| 8344 | //-- uInstr2(cb, PUT, 4, TempReg, t1, ArchReg, gregOfRM(modrm)); |
| 8345 | //-- DIP("pmovmskb %s, %s\n", |
| 8346 | //-- nameMMXReg(eregOfRM(modrm)), nameIReg(4,gregOfRM(modrm))); |
| 8347 | //-- eip++; |
| 8348 | //-- break; |
| 8349 | //-- |
| 8350 | //-- case 0xC5: |
| 8351 | //-- /* PEXTRW (src)mmxreg, (dst)ireg */ |
| 8352 | //-- vg_assert(sz == 4); |
| 8353 | //-- t1 = newTemp(cb); |
| 8354 | //-- modrm = getUChar(eip); eip++; |
| 8355 | //-- abyte = getUChar(eip); eip++; |
| 8356 | //-- vg_assert(epartIsReg(modrm)); |
| 8357 | //-- uInstr3(cb, SSE2g1_RegWr, 4, |
| 8358 | //-- Lit16, (((UShort)(0x0F)) << 8) | (UShort)(opc), |
| 8359 | //-- Lit16, (UShort)modrm, |
| 8360 | //-- TempReg, t1 ); |
| 8361 | //-- uLiteral(cb, abyte); |
| 8362 | //-- uInstr2(cb, PUT, 4, TempReg, t1, ArchReg, gregOfRM(modrm)); |
| 8363 | //-- DIP("pextrw %s, %d, %s\n", |
| 8364 | //-- nameMMXReg(eregOfRM(modrm)), (Int)abyte, |
| 8365 | //-- nameIReg(4, gregOfRM(modrm))); |
| 8366 | //-- break; |
| 8367 | //-- |
| 8368 | //-- case 0xC4: |
| 8369 | //-- /* PINSRW (src)ireg, (dst)mmxreg */ |
| 8370 | //-- vg_assert(sz == 4); |
| 8371 | //-- t1 = newTemp(cb); |
| 8372 | //-- modrm = getUChar(eip); eip++; |
| 8373 | //-- abyte = getUChar(eip); eip++; |
| 8374 | //-- vg_assert(epartIsReg(modrm)); |
| 8375 | //-- uInstr2(cb, GET, 2, ArchReg, eregOfRM(modrm), TempReg, t1); |
| 8376 | //-- uInstr3(cb, SSE2e1_RegRd, 2, |
| 8377 | //-- Lit16, (((UShort)(0x0F)) << 8) | (UShort)(opc), |
| 8378 | //-- Lit16, (UShort)modrm, |
| 8379 | //-- TempReg, t1 ); |
| 8380 | //-- uLiteral(cb, abyte); |
| 8381 | //-- DIP("pinsrw %s, %d, %s\n", nameIReg(2, eregOfRM(modrm)), |
| 8382 | //-- (Int)abyte, nameMMXReg(gregOfRM(modrm))); |
| 8383 | //-- break; |
| 8384 | //-- |
| 8385 | //-- case 0xA1: /* POP %FS */ |
| 8386 | //-- dis_pop_segreg( cb, R_FS, sz ); break; |
| 8387 | //-- case 0xA9: /* POP %GS */ |
| 8388 | //-- dis_pop_segreg( cb, R_GS, sz ); break; |
| 8389 | //-- |
| 8390 | //-- case 0xA0: /* PUSH %FS */ |
| 8391 | //-- dis_push_segreg( cb, R_FS, sz ); break; |
| 8392 | //-- case 0xA8: /* PUSH %GS */ |
| 8393 | //-- dis_push_segreg( cb, R_GS, sz ); break; |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 8394 | |
| 8395 | /* =-=-=-=-=-=-=-=-=- unimp2 =-=-=-=-=-=-=-=-=-=-= */ |
| 8396 | |
| 8397 | default: |
| 8398 | goto decode_failure; |
| 8399 | } /* switch (opc) for the 2-byte opcodes */ |
| 8400 | goto decode_success; |
| 8401 | } /* case 0x0F: of primary opcode */ |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 8402 | |
| 8403 | /* ------------------------ ??? ------------------------ */ |
| 8404 | |
| 8405 | default: |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 8406 | decode_failure: |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 8407 | /* All decode failures end up here. */ |
| 8408 | vex_printf("disInstr(x86): unhandled instruction bytes: " |
| 8409 | "0x%x 0x%x 0x%x 0x%x\n", |
| 8410 | (Int)getIByte(delta_start+0), |
| 8411 | (Int)getIByte(delta_start+1), |
| 8412 | (Int)getIByte(delta_start+2), |
| 8413 | (Int)getIByte(delta_start+3) ); |
| 8414 | vpanic("x86toIR: unimplemented insn"); |
| 8415 | /* Print address of failing instruction. */ |
| 8416 | //VG_(describe_eip)((Addr)eip_start, loc_buf, M_VG_ERRTXT); |
| 8417 | //VG_(printf)(" at %s\n", loc_buf); |
| 8418 | |
| 8419 | //uInstr0(cb, CALLM_S, 0); |
| 8420 | //uInstr1(cb, CALLM, 0, Lit16, |
| 8421 | // VGOFF_(helper_undefined_instruction)); |
| 8422 | //uInstr0(cb, CALLM_E, 0); |
| 8423 | |
| 8424 | /* just because everything else insists the last instruction of |
| 8425 | a BB is a jmp */ |
| 8426 | //jmp_lit(cb, eip); |
| 8427 | //*isEnd = True; |
| 8428 | //break; |
| 8429 | //return eip; |
| 8430 | |
| 8431 | } /* switch (opc) for the main (primary) opcode switch. */ |
| 8432 | |
sewardj | e87b484 | 2004-07-10 12:23:30 +0000 | [diff] [blame] | 8433 | decode_success: |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 8434 | /* All decode successes end up here. */ |
| 8435 | DIP("\n"); |
sewardj | d7cb853 | 2004-08-17 23:59:23 +0000 | [diff] [blame] | 8436 | { Int i; |
| 8437 | for (i = first_stmt_idx; i < irbb->stmts_used; i++) { |
| 8438 | if (print_codegen) { |
| 8439 | vex_printf(" "); |
| 8440 | ppIRStmt(irbb->stmts[i]); |
| 8441 | vex_printf("\n"); |
| 8442 | } |
| 8443 | } |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 8444 | } |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 8445 | if (*isEnd) { |
| 8446 | vassert(irbb->next != NULL); |
sewardj | e539a40 | 2004-07-14 18:24:17 +0000 | [diff] [blame] | 8447 | if (print_codegen) { |
| 8448 | vex_printf(" "); |
| 8449 | vex_printf( "goto {"); |
| 8450 | ppIRJumpKind(irbb->jumpkind); |
| 8451 | vex_printf( "} "); |
| 8452 | ppIRExpr( irbb->next ); |
| 8453 | vex_printf( "\n"); |
| 8454 | } |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 8455 | } |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 8456 | //for (; first_uinstr < cb->used; first_uinstr++) { |
| 8457 | // Bool sane = VG_(saneUInstr)(True, True, &cb->instrs[first_uinstr]); |
| 8458 | // if (!sane) |
| 8459 | // VG_(up_UInstr)(first_uinstr, &cb->instrs[first_uinstr]); |
| 8460 | // else if (VG_(print_codegen)) |
| 8461 | // VG_(pp_UInstr)(first_uinstr, &cb->instrs[first_uinstr]); |
| 8462 | // vg_assert(sane); |
| 8463 | // } |
| 8464 | return delta; |
| 8465 | } |
| 8466 | |
| 8467 | |
| 8468 | /* Disassemble a complete basic block, starting at eip, and dumping |
| 8469 | the ucode into cb. Returns the size, in bytes, of the basic |
| 8470 | block. */ |
sewardj | 41f43bc | 2004-07-08 14:23:22 +0000 | [diff] [blame] | 8471 | IRBB* bbToIR_X86Instr ( UChar* x86code, |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 8472 | Addr64 eip, |
| 8473 | Int* guest_bytes_read, |
| 8474 | Bool (*byte_accessible)(Addr64), |
| 8475 | Bool host_bigendian ) |
| 8476 | { |
| 8477 | UInt delta; |
| 8478 | Int n_instrs; |
| 8479 | Bool isEnd; |
| 8480 | |
| 8481 | /* Set up globals. */ |
| 8482 | host_is_bigendian = host_bigendian; |
| 8483 | print_codegen = (vex_verbosity >= 1); |
| 8484 | guest_code = x86code; |
| 8485 | guest_eip = (Addr32)eip; |
sewardj | d7cb853 | 2004-08-17 23:59:23 +0000 | [diff] [blame] | 8486 | irbb = emptyIRBB(); |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 8487 | |
| 8488 | vassert((eip >> 32) == 0); |
sewardj | b2dc809 | 2004-07-25 17:25:06 +0000 | [diff] [blame] | 8489 | vassert(vex_guest_insns_per_bb >= 1); |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 8490 | |
| 8491 | DIP("Original x86 code to IR:\n\n"); |
| 8492 | |
| 8493 | /* Delta keeps track of how far along the x86code array we |
| 8494 | have so far gone. */ |
| 8495 | isEnd = False; |
| 8496 | delta = 0; |
| 8497 | n_instrs = 0; |
| 8498 | while (True) { |
| 8499 | if (isEnd) break; |
sewardj | b2dc809 | 2004-07-25 17:25:06 +0000 | [diff] [blame] | 8500 | if (n_instrs == vex_guest_insns_per_bb) { |
| 8501 | vassert(irbb->next == NULL); |
| 8502 | irbb->next = mkU32(((Addr32)eip)+delta); |
| 8503 | break; |
| 8504 | } |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 8505 | vassert(n_instrs < vex_guest_insns_per_bb); |
| 8506 | delta = disInstr ( delta, &isEnd ); |
| 8507 | n_instrs++; |
| 8508 | DIP("\n"); |
| 8509 | } |
| 8510 | |
sewardj | d1061ab | 2004-07-08 01:45:30 +0000 | [diff] [blame] | 8511 | *guest_bytes_read = delta; |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 8512 | return irbb; |
| 8513 | } |
| 8514 | |
| 8515 | #undef DIP |
| 8516 | #undef DIS |
| 8517 | |
| 8518 | /*--------------------------------------------------------------------*/ |
sewardj | c0ee2ed | 2004-07-27 10:29:41 +0000 | [diff] [blame] | 8519 | /*--- end guest-x86/toIR.c ---*/ |
sewardj | c9a6570 | 2004-07-07 16:32:57 +0000 | [diff] [blame] | 8520 | /*--------------------------------------------------------------------*/ |