sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1 | |
| 2 | /*--------------------------------------------------------------------*/ |
| 3 | /*--- The JITter: translate ucode back to x86 code. ---*/ |
| 4 | /*--- vg_from_ucode.c ---*/ |
| 5 | /*--------------------------------------------------------------------*/ |
njn | c953984 | 2002-10-02 13:26:35 +0000 | [diff] [blame] | 6 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 7 | /* |
njn | c953984 | 2002-10-02 13:26:35 +0000 | [diff] [blame] | 8 | This file is part of Valgrind, an extensible x86 protected-mode |
| 9 | emulator for monitoring program execution on x86-Unixes. |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 10 | |
njn | 0e1b514 | 2003-04-15 14:58:06 +0000 | [diff] [blame] | 11 | Copyright (C) 2000-2003 Julian Seward |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 12 | jseward@acm.org |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 13 | |
| 14 | This program is free software; you can redistribute it and/or |
| 15 | modify it under the terms of the GNU General Public License as |
| 16 | published by the Free Software Foundation; either version 2 of the |
| 17 | License, or (at your option) any later version. |
| 18 | |
| 19 | This program is distributed in the hope that it will be useful, but |
| 20 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 22 | General Public License for more details. |
| 23 | |
| 24 | You should have received a copy of the GNU General Public License |
| 25 | along with this program; if not, write to the Free Software |
| 26 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 27 | 02111-1307, USA. |
| 28 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 29 | The GNU General Public License is contained in the file COPYING. |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 30 | */ |
| 31 | |
| 32 | #include "vg_include.h" |
| 33 | |
| 34 | |
| 35 | /*------------------------------------------------------------*/ |
| 36 | /*--- Renamings of frequently-used global functions. ---*/ |
| 37 | /*------------------------------------------------------------*/ |
| 38 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 39 | #define dis VG_(print_codegen) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 40 | |
| 41 | /*------------------------------------------------------------*/ |
| 42 | /*--- Instruction emission -- turning final uinstrs back ---*/ |
| 43 | /*--- into x86 code. ---*/ |
| 44 | /*------------------------------------------------------------*/ |
| 45 | |
| 46 | /* [2001-07-08 This comment is now somewhat out of date.] |
| 47 | |
| 48 | This is straightforward but for one thing: to facilitate generating |
| 49 | code in a single pass, we generate position-independent code. To |
| 50 | do this, calls and jmps to fixed addresses must specify the address |
| 51 | by first loading it into a register, and jump to/call that |
| 52 | register. Fortunately, the only jump to a literal is the jump back |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 53 | to vg_dispatch, and only %eax is live then, conveniently. UCode |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 54 | call insns may only have a register as target anyway, so there's no |
| 55 | need to do anything fancy for them. |
| 56 | |
| 57 | The emit_* routines constitute the lowest level of instruction |
| 58 | emission. They simply emit the sequence of bytes corresponding to |
| 59 | the relevant instruction, with no further ado. In particular there |
| 60 | is no checking about whether uses of byte registers makes sense, |
| 61 | nor whether shift insns have their first operand in %cl, etc. |
| 62 | |
| 63 | These issues are taken care of by the level above, the synth_* |
| 64 | routines. These detect impossible operand combinations and turn |
| 65 | them into sequences of legal instructions. Finally, emitUInstr is |
| 66 | phrased in terms of the synth_* abstraction layer. */ |
| 67 | |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 68 | /* Static state for the current basic block */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 69 | static UChar* emitted_code; |
| 70 | static Int emitted_code_used; |
| 71 | static Int emitted_code_size; |
| 72 | |
sewardj | 22854b9 | 2002-11-30 14:00:47 +0000 | [diff] [blame] | 73 | /* offset (in bytes into the basic block) */ |
| 74 | static UShort jumps[VG_MAX_JUMPS]; |
| 75 | static Int jumpidx; |
| 76 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 77 | static enum _eflags_state { |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 78 | UPD_Simd, /* baseblock copy is up to date */ |
| 79 | UPD_Real, /* CPU copy is up to date */ |
| 80 | UPD_Both, /* both are current */ |
| 81 | } eflags_state; |
| 82 | |
| 83 | /* single site for resetting state */ |
| 84 | static void reset_state(void) |
| 85 | { |
| 86 | emitted_code_used = 0; |
| 87 | emitted_code_size = 500; /* reasonable initial size */ |
| 88 | emitted_code = VG_(arena_malloc)(VG_AR_JITTER, emitted_code_size); |
| 89 | jumpidx = 0; |
| 90 | eflags_state = UPD_Simd; |
| 91 | } |
| 92 | |
| 93 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 94 | /* Statistics about C functions called from generated code. */ |
| 95 | static UInt ccalls = 0; |
| 96 | static UInt ccall_reg_saves = 0; |
| 97 | static UInt ccall_args = 0; |
| 98 | static UInt ccall_arg_setup_instrs = 0; |
| 99 | static UInt ccall_stack_clears = 0; |
| 100 | static UInt ccall_retvals = 0; |
| 101 | static UInt ccall_retval_movs = 0; |
| 102 | |
| 103 | /* Statistics about frequency of each UInstr */ |
| 104 | typedef |
| 105 | struct { |
| 106 | UInt counts; |
| 107 | UInt size; |
| 108 | } Histogram; |
| 109 | |
| 110 | /* Automatically zeroed because it's static. */ |
| 111 | static Histogram histogram[100]; |
| 112 | |
| 113 | void VG_(print_ccall_stats)(void) |
| 114 | { |
| 115 | VG_(message)(Vg_DebugMsg, |
| 116 | " ccalls: %u C calls, %u%% saves+restores avoided" |
| 117 | " (%d bytes)", |
| 118 | ccalls, |
| 119 | 100-(UInt)(ccall_reg_saves/(double)(ccalls*3)*100), |
| 120 | ((ccalls*3) - ccall_reg_saves)*2); |
| 121 | VG_(message)(Vg_DebugMsg, |
| 122 | " %u args, avg 0.%d setup instrs each (%d bytes)", |
| 123 | ccall_args, |
| 124 | (UInt)(ccall_arg_setup_instrs/(double)ccall_args*100), |
| 125 | (ccall_args - ccall_arg_setup_instrs)*2); |
| 126 | VG_(message)(Vg_DebugMsg, |
| 127 | " %d%% clear the stack (%d bytes)", |
| 128 | (UInt)(ccall_stack_clears/(double)ccalls*100), |
| 129 | (ccalls - ccall_stack_clears)*3); |
| 130 | VG_(message)(Vg_DebugMsg, |
| 131 | " %u retvals, %u%% of reg-reg movs avoided (%d bytes)", |
| 132 | ccall_retvals, |
| 133 | ( ccall_retvals == 0 |
| 134 | ? 100 |
| 135 | : 100-(UInt)(ccall_retval_movs / |
| 136 | (double)ccall_retvals*100)), |
| 137 | (ccall_retvals-ccall_retval_movs)*2); |
| 138 | } |
| 139 | |
| 140 | void VG_(print_UInstr_histogram)(void) |
| 141 | { |
| 142 | Int i, j; |
| 143 | UInt total_counts = 0; |
| 144 | UInt total_size = 0; |
sewardj | 6c3769f | 2002-11-29 01:02:45 +0000 | [diff] [blame] | 145 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 146 | for (i = 0; i < 100; i++) { |
| 147 | total_counts += histogram[i].counts; |
| 148 | total_size += histogram[i].size; |
| 149 | } |
| 150 | |
| 151 | VG_(printf)("-- UInstr frequencies -----------\n"); |
| 152 | for (i = 0; i < 100; i++) { |
| 153 | if (0 != histogram[i].counts) { |
| 154 | |
| 155 | UInt count_pc = |
| 156 | (UInt)(histogram[i].counts/(double)total_counts*100 + 0.5); |
| 157 | UInt size_pc = |
| 158 | (UInt)(histogram[i].size /(double)total_size *100 + 0.5); |
| 159 | UInt avg_size = |
| 160 | (UInt)(histogram[i].size / (double)histogram[i].counts + 0.5); |
| 161 | |
| 162 | VG_(printf)("%-7s:%8u (%2u%%), avg %2dB (%2u%%) |", |
njn | 4ba5a79 | 2002-09-30 10:23:54 +0000 | [diff] [blame] | 163 | VG_(name_UOpcode)(True, i), |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 164 | histogram[i].counts, count_pc, |
| 165 | avg_size, size_pc); |
| 166 | |
sewardj | 05bcdcb | 2003-05-18 10:05:38 +0000 | [diff] [blame] | 167 | for (j = 0; j < (Int)size_pc; j++) VG_(printf)("O"); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 168 | VG_(printf)("\n"); |
| 169 | |
| 170 | } else { |
| 171 | vg_assert(0 == histogram[i].size); |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | VG_(printf)("total UInstrs %u, total size %u\n", total_counts, total_size); |
| 176 | } |
| 177 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 178 | static void expandEmittedCode ( void ) |
| 179 | { |
| 180 | Int i; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 181 | UChar *tmp = VG_(arena_malloc)(VG_AR_JITTER, 2 * emitted_code_size); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 182 | /* VG_(printf)("expand to %d\n", 2 * emitted_code_size); */ |
| 183 | for (i = 0; i < emitted_code_size; i++) |
| 184 | tmp[i] = emitted_code[i]; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 185 | VG_(arena_free)(VG_AR_JITTER, emitted_code); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 186 | emitted_code = tmp; |
| 187 | emitted_code_size *= 2; |
| 188 | } |
| 189 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 190 | /* Local calls will be inlined, cross-module ones not */ |
| 191 | __inline__ void VG_(emitB) ( UInt b ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 192 | { |
| 193 | if (dis) { |
| 194 | if (b < 16) VG_(printf)("0%x ", b); else VG_(printf)("%2x ", b); |
| 195 | } |
| 196 | if (emitted_code_used == emitted_code_size) |
| 197 | expandEmittedCode(); |
| 198 | |
| 199 | emitted_code[emitted_code_used] = (UChar)b; |
| 200 | emitted_code_used++; |
| 201 | } |
| 202 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 203 | __inline__ void VG_(emitW) ( UInt l ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 204 | { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 205 | VG_(emitB) ( (l) & 0x000000FF ); |
| 206 | VG_(emitB) ( (l >> 8) & 0x000000FF ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 207 | } |
| 208 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 209 | __inline__ void VG_(emitL) ( UInt l ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 210 | { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 211 | VG_(emitB) ( (l) & 0x000000FF ); |
| 212 | VG_(emitB) ( (l >> 8) & 0x000000FF ); |
| 213 | VG_(emitB) ( (l >> 16) & 0x000000FF ); |
| 214 | VG_(emitB) ( (l >> 24) & 0x000000FF ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 215 | } |
| 216 | |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 217 | static void emit_get_eflags ( void ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 218 | { |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 219 | Int off = 4 * VGOFF_(m_eflags); |
| 220 | vg_assert(off >= 0 && off < 128); |
| 221 | |
| 222 | if (dis) |
| 223 | VG_(printf)("\t %4d: ", emitted_code_used ); |
| 224 | |
| 225 | VG_(emitB) ( 0xFF ); /* PUSHL off(%ebp) */ |
| 226 | VG_(emitB) ( 0x75 ); |
| 227 | VG_(emitB) ( off ); |
| 228 | VG_(emitB) ( 0x9D ); /* POPFL */ |
| 229 | if (dis) |
| 230 | VG_(printf)( "\n\t\tpushl %d(%%ebp) ; popfl\n", off ); |
| 231 | } |
| 232 | |
| 233 | static void emit_put_eflags ( void ) |
| 234 | { |
| 235 | Int off = 4 * VGOFF_(m_eflags); |
| 236 | vg_assert(off >= 0 && off < 128); |
| 237 | |
| 238 | if (dis) |
| 239 | VG_(printf)("\t %4d: ", emitted_code_used ); |
| 240 | |
| 241 | VG_(emitB) ( 0x9C ); /* PUSHFL */ |
| 242 | VG_(emitB) ( 0x8F ); /* POPL vg_m_state.m_eflags */ |
| 243 | VG_(emitB) ( 0x45 ); |
| 244 | VG_(emitB) ( off ); |
| 245 | if (dis) |
| 246 | VG_(printf)( "\n\t\tpushfl ; popl %d(%%ebp)\n", off ); |
| 247 | } |
| 248 | |
| 249 | static void maybe_emit_put_eflags( void ) |
| 250 | { |
| 251 | if (eflags_state == UPD_Real) { |
| 252 | eflags_state = UPD_Both; |
| 253 | emit_put_eflags(); |
| 254 | } |
| 255 | } |
| 256 | |
sewardj | a2c5a73 | 2002-12-15 03:10:42 +0000 | [diff] [blame] | 257 | |
| 258 | /* evidently unused */ |
| 259 | #if 0 |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 260 | static void maybe_emit_get_eflags( void ) |
| 261 | { |
| 262 | if (eflags_state == UPD_Simd) { |
| 263 | eflags_state = UPD_Both; |
| 264 | emit_get_eflags(); |
| 265 | } |
| 266 | } |
sewardj | a2c5a73 | 2002-12-15 03:10:42 +0000 | [diff] [blame] | 267 | #endif |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 268 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 269 | |
| 270 | #if 0 |
| 271 | /* begin UNUSED UNUSED UNUSED UNUSED UNUSED UNUSED UNUSED */ |
| 272 | /* An alternative implementation of new_emit in which the |
| 273 | state space is explicitly enumerated. */ |
| 274 | __inline__ |
| 275 | void VG_(new_emit) ( Bool upds_simd_flags, |
| 276 | FlagSet use_flags, FlagSet set_flags ) |
| 277 | { |
| 278 | Bool simd = upds_simd_flags; |
| 279 | enum _eflags_state where = eflags_state; |
| 280 | |
| 281 | enum { WNone, WSome, WAll } ww; |
| 282 | Bool rr; |
| 283 | |
| 284 | #define DIS_HEADER \ |
| 285 | if (dis) \ |
| 286 | VG_(printf)("\t %4d: ", emitted_code_used ); |
| 287 | |
| 288 | if (use_flags == FlagsEmpty) { |
| 289 | rr = False; |
| 290 | } else { |
| 291 | rr = True; |
| 292 | } |
| 293 | |
| 294 | if (set_flags == FlagsEmpty) { |
| 295 | ww = WNone; |
| 296 | } else |
| 297 | if (set_flags == FlagsOSZACP) { |
| 298 | ww = WAll; |
| 299 | } else { |
| 300 | ww = WSome; |
| 301 | } |
| 302 | |
| 303 | /* If we're not wanting to interact with simd flags, and the simd |
| 304 | flags are not in the real flags, then do nothing. */ |
| 305 | if (simd == False && where == UPD_Simd) |
| 306 | goto noaction; |
| 307 | |
| 308 | if (simd == True && where == UPD_Simd && rr == False && ww == WAll) { |
| 309 | /* We're going to generate a complete new simd flag state without |
| 310 | consulting the old one first, so just deem this insn to create |
| 311 | the state in the real flags. */ |
| 312 | eflags_state = UPD_Real; |
| 313 | DIS_HEADER; |
| 314 | return; |
| 315 | } |
| 316 | |
| 317 | if (simd == True && where == UPD_Simd && rr == False && ww == WSome) { |
| 318 | /* Want to partially update the flags state, but is in simd. So |
| 319 | fetch it first, then declare that the real state is the most |
| 320 | recent. */ |
| 321 | emit_get_eflags(); |
| 322 | eflags_state = UPD_Real; |
| 323 | DIS_HEADER; |
| 324 | return; |
| 325 | } |
| 326 | |
| 327 | if (simd == True && where == UPD_Simd && rr == True && ww == WNone) { |
| 328 | /* want to read simd flags, but not in real -> copy to real. */ |
| 329 | emit_get_eflags(); |
| 330 | eflags_state = UPD_Both; |
| 331 | DIS_HEADER; |
| 332 | return; |
| 333 | } |
| 334 | |
| 335 | if (simd == True && where == UPD_Simd && rr == True && ww == WAll) { |
| 336 | /* want to read and write simd flags, but not in real -> copy to |
| 337 | real. State is then Real since they get updated. */ |
| 338 | emit_get_eflags(); |
| 339 | eflags_state = UPD_Real; |
| 340 | DIS_HEADER; |
| 341 | return; |
| 342 | } |
| 343 | |
| 344 | if (simd == True && where == UPD_Simd && rr == False && ww == WNone) { |
| 345 | /* Doesn't really make sense. Want to interact with simd flags, |
| 346 | but insn doesn't modify them. So don't do anything. ??? */ |
| 347 | goto noaction; |
| 348 | } |
| 349 | |
| 350 | if (simd == True && where == UPD_Real && rr == False && ww == WNone) { |
| 351 | /* Doesn't really make sense. Want to interact with simd flags, |
| 352 | but insn doesn't modify them. So don't do anything. ??? */ |
| 353 | goto noaction; |
| 354 | } |
| 355 | |
| 356 | if (simd == True && where == UPD_Real && rr == True && ww == WNone) { |
| 357 | /* simd is in real. Insn reads real but does not change. --> do |
| 358 | nothing. */ |
| 359 | goto noaction; |
| 360 | } |
| 361 | |
| 362 | if (simd == True && where == UPD_Real && rr == True && ww == WAll) { |
| 363 | /* simd is in real. we want to capture changes made by it. --> |
| 364 | do nothing */ |
| 365 | goto noaction; |
| 366 | } |
| 367 | |
| 368 | if (simd == True && where == UPD_Real && rr == False && ww == WAll) { |
| 369 | /* simd is in real. Insn creates new simd state. --> leave in |
| 370 | real */ |
| 371 | goto noaction; |
| 372 | } |
| 373 | |
| 374 | if (simd == True && where == UPD_Both && rr == False && ww == WAll) { |
| 375 | /* simd is in both. Insn creates new simd state. --> change |
| 376 | state to Real. */ |
| 377 | narrow_Both_to_Real: |
| 378 | eflags_state = UPD_Real; |
| 379 | DIS_HEADER; |
| 380 | return; |
| 381 | } |
| 382 | |
| 383 | if (simd == True && where == UPD_Both && rr == False && ww == WSome) { |
| 384 | /* simd is in both. Insn creates partial new simd state. --> |
| 385 | change state to Real. No need to get, since Both holds. */ |
| 386 | goto narrow_Both_to_Real; |
| 387 | } |
| 388 | |
| 389 | if (simd == True && where == UPD_Real && rr == False && ww == WSome) { |
| 390 | /* simd is in real. Insn creates new simd state. --> leave in |
| 391 | real */ |
| 392 | goto noaction; |
| 393 | } |
| 394 | |
| 395 | if (simd == True && where == UPD_Both && rr == True && ww == WNone) |
| 396 | /* want to read the simd flags, but already have a copy in real, |
| 397 | and not planning to modify it --> do nothing. */ |
| 398 | goto noaction; |
| 399 | |
| 400 | //////////////// |
| 401 | |
| 402 | if (simd == False && where == UPD_Real && rr == False && ww == WNone) |
| 403 | /* simd state is in real, but insn doesn't touch it --> do nothing */ |
| 404 | goto noaction; |
| 405 | |
| 406 | if (simd == False && where == UPD_Both && rr == False && ww == WNone) |
| 407 | /* simd state is in both, insn doesn't touch it --> do nothing */ |
| 408 | goto noaction; |
| 409 | |
| 410 | if (simd == False && where == UPD_Both && rr == False && ww == WAll) { |
| 411 | /* simd state is in both. insn trashes real, therefore declare |
| 412 | simd state only in simd. */ |
| 413 | narrow_Both_to_Simd: |
| 414 | eflags_state = UPD_Simd; |
| 415 | DIS_HEADER; |
| 416 | return; |
| 417 | } |
| 418 | |
| 419 | if (simd == False && where == UPD_Both && rr == False && ww == WSome) { |
| 420 | /* simd state is in both. insn trashes real, therefore declare |
| 421 | simd state only in simd. */ |
| 422 | goto narrow_Both_to_Simd; |
| 423 | } |
| 424 | |
| 425 | if (simd == False && where == UPD_Real && rr == False && ww == WAll) { |
| 426 | /* simd state is in real; we don't want simd state changed, but |
| 427 | insn writes the flags. Therefore have to copy back first. */ |
| 428 | put_flags_and_continue: |
| 429 | emit_put_eflags(); |
| 430 | eflags_state = UPD_Simd; |
| 431 | DIS_HEADER; |
| 432 | return; |
| 433 | } |
| 434 | |
| 435 | if (simd == False && where == UPD_Real && rr == False && ww == WSome) { |
| 436 | /* simd state is in real; we don't want simd state changed, but |
| 437 | insn writes the flags. Therefore have to copy back first. */ |
| 438 | goto put_flags_and_continue; |
| 439 | } |
| 440 | |
| 441 | goto unhandled; |
| 442 | |
| 443 | noaction: |
| 444 | DIS_HEADER; |
| 445 | return; |
| 446 | |
| 447 | // if (simd == False && where == UPD_Simd && FL_NONE(rrr) && FL_SOME(www)) { |
| 448 | // return; |
| 449 | //} |
| 450 | |
| 451 | unhandled: |
| 452 | VG_(printf)("simd %s, where %s, read %s, write %s\n", |
| 453 | simd ? "True " : "False", |
| 454 | (eflags_state == UPD_Simd ? "Simd" : (eflags_state == UPD_Real |
| 455 | ? "Real" : "Both")), |
| 456 | rr ? "True " : "False", |
| 457 | ww == WNone ? "None" : ww == WSome ? "Some" : "All " |
| 458 | ); |
| 459 | |
| 460 | VG_(core_panic)("new_emit"); |
| 461 | } |
| 462 | /* end UNUSED UNUSED UNUSED UNUSED UNUSED UNUSED UNUSED */ |
| 463 | #endif |
| 464 | |
| 465 | |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 466 | /* Call this before emitting each instruction. |
| 467 | |
| 468 | Arguments are: |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 469 | interacts_with_simd_flags: |
| 470 | if true, this instruction wants to interact (read and/or write) |
| 471 | the simulated %EFLAGS state, |
| 472 | otherwise it doesn't want to. |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 473 | use_flags: set of (real) flags the instruction uses |
| 474 | set_flags: set of (real) flags the instruction sets |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 475 | */ |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 476 | __inline__ |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 477 | void VG_(new_emit) ( Bool interacts_with_simd_flags, |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 478 | FlagSet use_flags, FlagSet set_flags ) |
| 479 | { |
| 480 | Bool use, set; |
| 481 | |
| 482 | use = use_flags != FlagsEmpty |
| 483 | || (set_flags != FlagsEmpty && set_flags != FlagsOSZACP); |
| 484 | set = set_flags != FlagsEmpty; |
| 485 | |
| 486 | if (0) |
| 487 | VG_(printf)( |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 488 | "new_emit: state=%d interacts_with_simd_flags=%d " |
| 489 | "use_flags=%x set_flags=%x\n", |
| 490 | eflags_state, interacts_with_simd_flags, use_flags, set_flags); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 491 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 492 | if (interacts_with_simd_flags) { |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 493 | if (use && eflags_state == UPD_Simd) { |
| 494 | /* we need the CPU flags set, but they're not already */ |
| 495 | eflags_state = UPD_Both; |
| 496 | emit_get_eflags(); |
| 497 | } |
| 498 | if (set) { |
| 499 | /* if we're setting the flags, then the CPU will have the |
| 500 | only good copy */ |
| 501 | eflags_state = UPD_Real; |
| 502 | } |
| 503 | } else { |
| 504 | /* presume that if non-simd code is using flags, it knows what |
| 505 | it's doing (ie, it just set up the flags). */ |
| 506 | if (set) { |
| 507 | /* This instruction is going to trash the flags, so we'd |
| 508 | better save them away and say that they're only in the |
| 509 | simulated state. */ |
| 510 | maybe_emit_put_eflags(); |
| 511 | eflags_state = UPD_Simd; |
| 512 | } |
| 513 | } |
| 514 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 515 | if (dis) |
| 516 | VG_(printf)("\t %4d: ", emitted_code_used ); |
| 517 | } |
| 518 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 519 | |
| 520 | /*----------------------------------------------------*/ |
| 521 | /*--- Addressing modes ---*/ |
| 522 | /*----------------------------------------------------*/ |
| 523 | |
| 524 | static __inline__ UChar mkModRegRM ( UChar mod, UChar reg, UChar regmem ) |
| 525 | { |
| 526 | return ((mod & 3) << 6) | ((reg & 7) << 3) | (regmem & 7); |
| 527 | } |
| 528 | |
| 529 | static __inline__ UChar mkSIB ( Int scale, Int regindex, Int regbase ) |
| 530 | { |
| 531 | Int shift; |
| 532 | switch (scale) { |
| 533 | case 1: shift = 0; break; |
| 534 | case 2: shift = 1; break; |
| 535 | case 4: shift = 2; break; |
| 536 | case 8: shift = 3; break; |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 537 | default: VG_(core_panic)( "mkSIB" ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 538 | } |
| 539 | return ((shift & 3) << 6) | ((regindex & 7) << 3) | (regbase & 7); |
| 540 | } |
| 541 | |
| 542 | static __inline__ void emit_amode_litmem_reg ( Addr addr, Int reg ) |
| 543 | { |
| 544 | /* ($ADDR), reg */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 545 | VG_(emitB) ( mkModRegRM(0, reg, 5) ); |
| 546 | VG_(emitL) ( addr ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 547 | } |
| 548 | |
| 549 | static __inline__ void emit_amode_regmem_reg ( Int regmem, Int reg ) |
| 550 | { |
| 551 | /* (regmem), reg */ |
| 552 | if (regmem == R_ESP) |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 553 | VG_(core_panic)("emit_amode_regmem_reg"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 554 | if (regmem == R_EBP) { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 555 | VG_(emitB) ( mkModRegRM(1, reg, 5) ); |
| 556 | VG_(emitB) ( 0x00 ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 557 | } else { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 558 | VG_(emitB)( mkModRegRM(0, reg, regmem) ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 559 | } |
| 560 | } |
| 561 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 562 | void VG_(emit_amode_offregmem_reg) ( Int off, Int regmem, Int reg ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 563 | { |
| 564 | if (regmem == R_ESP) |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 565 | VG_(core_panic)("emit_amode_offregmem_reg(ESP)"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 566 | if (off < -128 || off > 127) { |
| 567 | /* Use a large offset */ |
| 568 | /* d32(regmem), reg */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 569 | VG_(emitB) ( mkModRegRM(2, reg, regmem) ); |
| 570 | VG_(emitL) ( off ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 571 | } else { |
| 572 | /* d8(regmem), reg */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 573 | VG_(emitB) ( mkModRegRM(1, reg, regmem) ); |
| 574 | VG_(emitB) ( off & 0xFF ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 575 | } |
| 576 | } |
| 577 | |
| 578 | static __inline__ void emit_amode_sib_reg ( Int off, Int scale, Int regbase, |
| 579 | Int regindex, Int reg ) |
| 580 | { |
| 581 | if (regindex == R_ESP) |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 582 | VG_(core_panic)("emit_amode_sib_reg(ESP)"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 583 | if (off < -128 || off > 127) { |
| 584 | /* Use a 32-bit offset */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 585 | VG_(emitB) ( mkModRegRM(2, reg, 4) ); /* SIB with 32-bit displacement */ |
| 586 | VG_(emitB) ( mkSIB( scale, regindex, regbase ) ); |
| 587 | VG_(emitL) ( off ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 588 | } else { |
| 589 | /* Use an 8-bit offset */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 590 | VG_(emitB) ( mkModRegRM(1, reg, 4) ); /* SIB with 8-bit displacement */ |
| 591 | VG_(emitB) ( mkSIB( scale, regindex, regbase ) ); |
| 592 | VG_(emitB) ( off & 0xFF ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 593 | } |
| 594 | } |
| 595 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 596 | void VG_(emit_amode_ereg_greg) ( Int e_reg, Int g_reg ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 597 | { |
| 598 | /* other_reg, reg */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 599 | VG_(emitB) ( mkModRegRM(3, g_reg, e_reg) ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 600 | } |
| 601 | |
| 602 | static __inline__ void emit_amode_greg_ereg ( Int g_reg, Int e_reg ) |
| 603 | { |
| 604 | /* other_reg, reg */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 605 | VG_(emitB) ( mkModRegRM(3, g_reg, e_reg) ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 606 | } |
| 607 | |
| 608 | |
| 609 | /*----------------------------------------------------*/ |
| 610 | /*--- Opcode translation ---*/ |
| 611 | /*----------------------------------------------------*/ |
| 612 | |
| 613 | static __inline__ Int mkGrp1opcode ( Opcode opc ) |
| 614 | { |
| 615 | switch (opc) { |
| 616 | case ADD: return 0; |
| 617 | case OR: return 1; |
| 618 | case ADC: return 2; |
| 619 | case SBB: return 3; |
| 620 | case AND: return 4; |
| 621 | case SUB: return 5; |
| 622 | case XOR: return 6; |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 623 | default: VG_(core_panic)("mkGrp1opcode"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 624 | } |
| 625 | } |
| 626 | |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 627 | static __inline__ FlagSet nonshiftop_use(Opcode opc) |
| 628 | { |
| 629 | switch(opc) { |
| 630 | case ADC: |
| 631 | case SBB: |
| 632 | return FlagC; |
| 633 | |
| 634 | case ADD: |
| 635 | case OR: |
| 636 | case AND: |
| 637 | case SUB: |
| 638 | case XOR: |
| 639 | return FlagsEmpty; |
| 640 | |
| 641 | default: |
| 642 | VG_(core_panic)("nonshiftop_use"); |
| 643 | } |
| 644 | } |
| 645 | |
| 646 | static __inline__ FlagSet nonshiftop_set(Opcode opc) |
| 647 | { |
| 648 | switch(opc) { |
| 649 | case ADC: |
| 650 | case SBB: |
| 651 | case ADD: |
| 652 | case OR: |
| 653 | case AND: |
| 654 | case SUB: |
| 655 | case XOR: |
| 656 | return FlagsOSZACP; |
| 657 | |
| 658 | default: |
| 659 | VG_(core_panic)("nonshiftop_set"); |
| 660 | } |
| 661 | } |
| 662 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 663 | static __inline__ Int mkGrp2opcode ( Opcode opc ) |
| 664 | { |
| 665 | switch (opc) { |
| 666 | case ROL: return 0; |
| 667 | case ROR: return 1; |
| 668 | case RCL: return 2; |
| 669 | case RCR: return 3; |
| 670 | case SHL: return 4; |
| 671 | case SHR: return 5; |
| 672 | case SAR: return 7; |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 673 | default: VG_(core_panic)("mkGrp2opcode"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 674 | } |
| 675 | } |
| 676 | |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 677 | static __inline__ FlagSet shiftop_use(Opcode opc) |
| 678 | { |
| 679 | switch(opc) { |
| 680 | case ROR: |
| 681 | case ROL: |
| 682 | case SHL: |
| 683 | case SHR: |
| 684 | case SAR: |
| 685 | return FlagsEmpty; |
| 686 | |
| 687 | case RCL: |
| 688 | case RCR: |
| 689 | return FlagC; |
| 690 | |
| 691 | default: |
| 692 | VG_(core_panic)("shiftop_use"); |
| 693 | } |
| 694 | } |
| 695 | |
| 696 | static __inline__ FlagSet shiftop_set(Opcode opc) |
| 697 | { |
| 698 | switch(opc) { |
| 699 | case ROR: |
| 700 | case ROL: |
| 701 | case RCL: |
| 702 | case RCR: |
| 703 | return FlagsOC; |
| 704 | |
| 705 | case SHL: |
| 706 | case SHR: |
| 707 | case SAR: |
| 708 | return FlagsOSZACP; |
| 709 | |
| 710 | default: |
| 711 | VG_(core_panic)("shiftop_set"); |
| 712 | } |
| 713 | } |
| 714 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 715 | static __inline__ Int mkGrp3opcode ( Opcode opc ) |
| 716 | { |
| 717 | switch (opc) { |
| 718 | case NOT: return 2; |
| 719 | case NEG: return 3; |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 720 | default: VG_(core_panic)("mkGrp3opcode"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 721 | } |
| 722 | } |
| 723 | |
| 724 | static __inline__ Int mkGrp4opcode ( Opcode opc ) |
| 725 | { |
| 726 | switch (opc) { |
| 727 | case INC: return 0; |
| 728 | case DEC: return 1; |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 729 | default: VG_(core_panic)("mkGrp4opcode"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 730 | } |
| 731 | } |
| 732 | |
| 733 | static __inline__ Int mkGrp5opcode ( Opcode opc ) |
| 734 | { |
| 735 | switch (opc) { |
| 736 | case CALLM: return 2; |
| 737 | case JMP: return 4; |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 738 | default: VG_(core_panic)("mkGrp5opcode"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 739 | } |
| 740 | } |
| 741 | |
| 742 | static __inline__ UChar mkPrimaryOpcode ( Opcode opc ) |
| 743 | { |
| 744 | switch (opc) { |
| 745 | case ADD: return 0x00; |
| 746 | case ADC: return 0x10; |
| 747 | case AND: return 0x20; |
| 748 | case XOR: return 0x30; |
| 749 | case OR: return 0x08; |
| 750 | case SBB: return 0x18; |
| 751 | case SUB: return 0x28; |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 752 | default: VG_(core_panic)("mkPrimaryOpcode"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 753 | } |
| 754 | } |
| 755 | |
| 756 | /*----------------------------------------------------*/ |
| 757 | /*--- v-size (4, or 2 with OSO) insn emitters ---*/ |
| 758 | /*----------------------------------------------------*/ |
| 759 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 760 | void VG_(emit_movv_offregmem_reg) ( Int sz, Int off, Int areg, Int reg ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 761 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 762 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 763 | if (sz == 2) VG_(emitB) ( 0x66 ); |
| 764 | VG_(emitB) ( 0x8B ); /* MOV Ev, Gv */ |
| 765 | VG_(emit_amode_offregmem_reg) ( off, areg, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 766 | if (dis) |
| 767 | VG_(printf)( "\n\t\tmov%c\t0x%x(%s), %s\n", |
| 768 | nameISize(sz), off, nameIReg(4,areg), nameIReg(sz,reg)); |
| 769 | } |
| 770 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 771 | void VG_(emit_movv_reg_offregmem) ( Int sz, Int reg, Int off, Int areg ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 772 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 773 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 774 | if (sz == 2) VG_(emitB) ( 0x66 ); |
| 775 | VG_(emitB) ( 0x89 ); /* MOV Gv, Ev */ |
| 776 | VG_(emit_amode_offregmem_reg) ( off, areg, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 777 | if (dis) |
| 778 | VG_(printf)( "\n\t\tmov%c\t%s, 0x%x(%s)\n", |
| 779 | nameISize(sz), nameIReg(sz,reg), off, nameIReg(4,areg)); |
| 780 | } |
| 781 | |
| 782 | static void emit_movv_regmem_reg ( Int sz, Int reg1, Int reg2 ) |
| 783 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 784 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 785 | if (sz == 2) VG_(emitB) ( 0x66 ); |
| 786 | VG_(emitB) ( 0x8B ); /* MOV Ev, Gv */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 787 | emit_amode_regmem_reg ( reg1, reg2 ); |
| 788 | if (dis) |
| 789 | VG_(printf)( "\n\t\tmov%c\t(%s), %s\n", |
| 790 | nameISize(sz), nameIReg(4,reg1), nameIReg(sz,reg2)); |
| 791 | } |
| 792 | |
| 793 | static void emit_movv_reg_regmem ( Int sz, Int reg1, Int reg2 ) |
| 794 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 795 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 796 | if (sz == 2) VG_(emitB) ( 0x66 ); |
| 797 | VG_(emitB) ( 0x89 ); /* MOV Gv, Ev */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 798 | emit_amode_regmem_reg ( reg2, reg1 ); |
| 799 | if (dis) |
| 800 | VG_(printf)( "\n\t\tmov%c\t%s, (%s)\n", |
| 801 | nameISize(sz), nameIReg(sz,reg1), nameIReg(4,reg2)); |
| 802 | } |
| 803 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 804 | void VG_(emit_movv_reg_reg) ( Int sz, Int reg1, Int reg2 ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 805 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 806 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 807 | if (sz == 2) VG_(emitB) ( 0x66 ); |
| 808 | VG_(emitB) ( 0x89 ); /* MOV Gv, Ev */ |
| 809 | VG_(emit_amode_ereg_greg) ( reg2, reg1 ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 810 | if (dis) |
| 811 | VG_(printf)( "\n\t\tmov%c\t%s, %s\n", |
| 812 | nameISize(sz), nameIReg(sz,reg1), nameIReg(sz,reg2)); |
| 813 | } |
| 814 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 815 | void VG_(emit_nonshiftopv_lit_reg) ( Bool simd_flags, |
| 816 | Int sz, Opcode opc, |
| 817 | UInt lit, Int reg ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 818 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 819 | VG_(new_emit)(simd_flags, nonshiftop_use(opc), nonshiftop_set(opc)); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 820 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 821 | if (sz == 2) VG_(emitB) ( 0x66 ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 822 | if (lit == VG_(extend_s_8to32)(lit & 0x000000FF)) { |
| 823 | /* short form OK */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 824 | VG_(emitB) ( 0x83 ); /* Grp1 Ib,Ev */ |
| 825 | VG_(emit_amode_ereg_greg) ( reg, mkGrp1opcode(opc) ); |
| 826 | VG_(emitB) ( lit & 0x000000FF ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 827 | } else { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 828 | VG_(emitB) ( 0x81 ); /* Grp1 Iv,Ev */ |
| 829 | VG_(emit_amode_ereg_greg) ( reg, mkGrp1opcode(opc) ); |
| 830 | if (sz == 2) VG_(emitW) ( lit ); else VG_(emitL) ( lit ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 831 | } |
| 832 | if (dis) |
| 833 | VG_(printf)( "\n\t\t%s%c\t$0x%x, %s\n", |
njn | 4ba5a79 | 2002-09-30 10:23:54 +0000 | [diff] [blame] | 834 | VG_(name_UOpcode)(False,opc), nameISize(sz), |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 835 | lit, nameIReg(sz,reg)); |
| 836 | } |
| 837 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 838 | void VG_(emit_nonshiftopv_lit_offregmem) ( Bool simd_flags, Int sz, |
| 839 | Opcode opc, UInt lit, |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 840 | Int off, Int regmem ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 841 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 842 | VG_(new_emit)(simd_flags, nonshiftop_use(opc), nonshiftop_set(opc)); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 843 | if (sz == 2) VG_(emitB) ( 0x66 ); |
| 844 | if (lit == VG_(extend_s_8to32)(lit & 0x000000FF)) { |
| 845 | /* short form OK */ |
| 846 | VG_(emitB) ( 0x83 ); /* Grp1 Ib,Ev */ |
| 847 | VG_(emit_amode_offregmem_reg) ( off, regmem, mkGrp1opcode(opc) ); |
| 848 | VG_(emitB) ( lit & 0x000000FF ); |
| 849 | } else { |
| 850 | VG_(emitB) ( 0x81 ); /* Grp1 Iv,Ev */ |
| 851 | VG_(emit_amode_offregmem_reg) ( off, regmem, mkGrp1opcode(opc) ); |
| 852 | if (sz == 2) VG_(emitW) ( lit ); else VG_(emitL) ( lit ); |
| 853 | } |
| 854 | if (dis) |
| 855 | VG_(printf)( "\n\t\t%s%c\t$0x%x, 0x%x(%s)\n", |
| 856 | VG_(name_UOpcode)(False,opc), nameISize(sz), |
| 857 | lit, off, nameIReg(sz,regmem)); |
| 858 | } |
| 859 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 860 | void VG_(emit_shiftopv_lit_reg) ( Bool simd_flags, |
| 861 | Int sz, Opcode opc, |
| 862 | UInt lit, Int reg ) |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 863 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 864 | VG_(new_emit)(simd_flags, shiftop_use(opc), shiftop_set(opc)); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 865 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 866 | if (sz == 2) VG_(emitB) ( 0x66 ); |
| 867 | VG_(emitB) ( 0xC1 ); /* Grp2 Ib,Ev */ |
| 868 | VG_(emit_amode_ereg_greg) ( reg, mkGrp2opcode(opc) ); |
| 869 | VG_(emitB) ( lit ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 870 | if (dis) |
| 871 | VG_(printf)( "\n\t\t%s%c\t$%d, %s\n", |
njn | 4ba5a79 | 2002-09-30 10:23:54 +0000 | [diff] [blame] | 872 | VG_(name_UOpcode)(False,opc), nameISize(sz), |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 873 | lit, nameIReg(sz,reg)); |
| 874 | } |
| 875 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 876 | static void emit_shiftopv_cl_stack0 ( Bool simd_flags, Int sz, Opcode opc ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 877 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 878 | VG_(new_emit)(simd_flags, shiftop_use(opc), shiftop_set(opc)); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 879 | if (sz == 2) VG_(emitB) ( 0x66 ); |
| 880 | VG_(emitB) ( 0xD3 ); /* Grp2 CL,Ev */ |
| 881 | VG_(emitB) ( mkModRegRM ( 1, mkGrp2opcode(opc), 4 ) ); |
| 882 | VG_(emitB) ( 0x24 ); /* a SIB, I think `d8(%esp)' */ |
| 883 | VG_(emitB) ( 0x00 ); /* the d8 displacement */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 884 | if (dis) |
| 885 | VG_(printf)("\n\t\t%s%c %%cl, 0(%%esp)\n", |
njn | 4ba5a79 | 2002-09-30 10:23:54 +0000 | [diff] [blame] | 886 | VG_(name_UOpcode)(False,opc), nameISize(sz) ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 887 | } |
| 888 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 889 | static void emit_shiftopb_cl_stack0 ( Bool simd_flags, Opcode opc ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 890 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 891 | VG_(new_emit)(simd_flags, shiftop_use(opc), shiftop_set(opc)); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 892 | VG_(emitB) ( 0xD2 ); /* Grp2 CL,Eb */ |
| 893 | VG_(emitB) ( mkModRegRM ( 1, mkGrp2opcode(opc), 4 ) ); |
| 894 | VG_(emitB) ( 0x24 ); /* a SIB, I think `d8(%esp)' */ |
| 895 | VG_(emitB) ( 0x00 ); /* the d8 displacement */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 896 | if (dis) |
| 897 | VG_(printf)("\n\t\t%s%c %%cl, 0(%%esp)\n", |
njn | 4ba5a79 | 2002-09-30 10:23:54 +0000 | [diff] [blame] | 898 | VG_(name_UOpcode)(False,opc), nameISize(1) ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 899 | } |
| 900 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 901 | static void emit_nonshiftopv_offregmem_reg ( Bool simd_flags, Int sz, |
| 902 | Opcode opc, |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 903 | Int off, Int areg, Int reg ) |
| 904 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 905 | VG_(new_emit)(simd_flags, nonshiftop_use(opc), nonshiftop_set(opc)); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 906 | if (sz == 2) VG_(emitB) ( 0x66 ); |
| 907 | VG_(emitB) ( 3 + mkPrimaryOpcode(opc) ); /* op Ev, Gv */ |
| 908 | VG_(emit_amode_offregmem_reg) ( off, areg, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 909 | if (dis) |
| 910 | VG_(printf)( "\n\t\t%s%c\t0x%x(%s), %s\n", |
njn | 4ba5a79 | 2002-09-30 10:23:54 +0000 | [diff] [blame] | 911 | VG_(name_UOpcode)(False,opc), nameISize(sz), |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 912 | off, nameIReg(4,areg), nameIReg(sz,reg)); |
| 913 | } |
| 914 | |
sewardj | a2c5a73 | 2002-12-15 03:10:42 +0000 | [diff] [blame] | 915 | #if 0 |
| 916 | /* evidently unused */ |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 917 | static void emit_nonshiftopv_reg_offregmem ( Bool simd_flags, Int sz, Opcode opc, |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 918 | Int off, Int areg, Int reg ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 919 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 920 | VG_(new_emit)(simd_flags, nonshiftop_use(opc), nonshiftop_set(opc)); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 921 | if (sz == 2) VG_(emitB) ( 0x66 ); |
| 922 | VG_(emitB) ( 1 + mkPrimaryOpcode(opc) ); /* op Gv, Ev */ |
| 923 | VG_(emit_amode_offregmem_reg) ( off, areg, reg ); |
| 924 | if (dis) |
| 925 | VG_(printf)( "\n\t\t%s%c\t0x%s, %x(%s),\n", |
| 926 | VG_(name_UOpcode)(False,opc), nameISize(sz), |
| 927 | nameIReg(sz,reg), off, nameIReg(4,areg)); |
| 928 | } |
sewardj | a2c5a73 | 2002-12-15 03:10:42 +0000 | [diff] [blame] | 929 | #endif |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 930 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 931 | void VG_(emit_nonshiftopv_reg_reg) ( Bool simd_flags, Int sz, Opcode opc, |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 932 | Int reg1, Int reg2 ) |
| 933 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 934 | VG_(new_emit)(simd_flags, nonshiftop_use(opc), nonshiftop_set(opc)); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 935 | if (sz == 2) VG_(emitB) ( 0x66 ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 936 | # if 0 |
| 937 | /* Perfectly correct, but the GNU assembler uses the other form. |
| 938 | Therefore we too use the other form, to aid verification. */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 939 | VG_(emitB) ( 3 + mkPrimaryOpcode(opc) ); /* op Ev, Gv */ |
| 940 | VG_(emit_amode_ereg_greg) ( reg1, reg2 ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 941 | # else |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 942 | VG_(emitB) ( 1 + mkPrimaryOpcode(opc) ); /* op Gv, Ev */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 943 | emit_amode_greg_ereg ( reg1, reg2 ); |
| 944 | # endif |
| 945 | if (dis) |
| 946 | VG_(printf)( "\n\t\t%s%c\t%s, %s\n", |
njn | 4ba5a79 | 2002-09-30 10:23:54 +0000 | [diff] [blame] | 947 | VG_(name_UOpcode)(False,opc), nameISize(sz), |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 948 | nameIReg(sz,reg1), nameIReg(sz,reg2)); |
| 949 | } |
| 950 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 951 | void VG_(emit_movv_lit_reg) ( Int sz, UInt lit, Int reg ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 952 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 953 | #if 0 |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 954 | if (lit == 0 && eflags_state != UPD_Real) { |
| 955 | /* Only emit this for zeroing if it won't stomp flags */ |
| 956 | VG_(emit_nonshiftopv_reg_reg) ( False, sz, XOR, reg, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 957 | return; |
| 958 | } |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 959 | #endif |
| 960 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 961 | if (sz == 2) VG_(emitB) ( 0x66 ); |
| 962 | VG_(emitB) ( 0xB8+reg ); /* MOV imm, Gv */ |
| 963 | if (sz == 2) VG_(emitW) ( lit ); else VG_(emitL) ( lit ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 964 | if (dis) |
| 965 | VG_(printf)( "\n\t\tmov%c\t$0x%x, %s\n", |
| 966 | nameISize(sz), lit, nameIReg(sz,reg)); |
| 967 | } |
| 968 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 969 | void VG_(emit_unaryopv_reg) ( Bool simd_flags, Int sz, Opcode opc, Int reg ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 970 | { |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 971 | switch (opc) { |
| 972 | case NEG: |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 973 | VG_(new_emit)(simd_flags, FlagsEmpty, FlagsOSZACP); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 974 | if (sz == 2) VG_(emitB) ( 0x66 ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 975 | VG_(emitB) ( 0xF7 ); |
| 976 | VG_(emit_amode_ereg_greg) ( reg, mkGrp3opcode(NEG) ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 977 | if (dis) |
| 978 | VG_(printf)( "\n\t\tneg%c\t%s\n", |
| 979 | nameISize(sz), nameIReg(sz,reg)); |
| 980 | break; |
| 981 | case NOT: |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 982 | VG_(new_emit)(simd_flags, FlagsEmpty, FlagsEmpty); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 983 | if (sz == 2) VG_(emitB) ( 0x66 ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 984 | VG_(emitB) ( 0xF7 ); |
| 985 | VG_(emit_amode_ereg_greg) ( reg, mkGrp3opcode(NOT) ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 986 | if (dis) |
| 987 | VG_(printf)( "\n\t\tnot%c\t%s\n", |
| 988 | nameISize(sz), nameIReg(sz,reg)); |
| 989 | break; |
| 990 | case DEC: |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 991 | VG_(new_emit)(simd_flags, FlagsEmpty, FlagsOSZAP); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 992 | if (sz == 2) VG_(emitB) ( 0x66 ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 993 | VG_(emitB) ( 0x48 + reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 994 | if (dis) |
| 995 | VG_(printf)( "\n\t\tdec%c\t%s\n", |
| 996 | nameISize(sz), nameIReg(sz,reg)); |
| 997 | break; |
| 998 | case INC: |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 999 | VG_(new_emit)(simd_flags, FlagsEmpty, FlagsOSZAP); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 1000 | if (sz == 2) VG_(emitB) ( 0x66 ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1001 | VG_(emitB) ( 0x40 + reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1002 | if (dis) |
| 1003 | VG_(printf)( "\n\t\tinc%c\t%s\n", |
| 1004 | nameISize(sz), nameIReg(sz,reg)); |
| 1005 | break; |
| 1006 | default: |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 1007 | VG_(core_panic)("VG_(emit_unaryopv_reg)"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1008 | } |
| 1009 | } |
| 1010 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1011 | void VG_(emit_pushv_reg) ( Int sz, Int reg ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1012 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1013 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1014 | if (sz == 2) { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1015 | VG_(emitB) ( 0x66 ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1016 | } else { |
| 1017 | vg_assert(sz == 4); |
| 1018 | } |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1019 | VG_(emitB) ( 0x50 + reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1020 | if (dis) |
| 1021 | VG_(printf)("\n\t\tpush%c %s\n", nameISize(sz), nameIReg(sz,reg)); |
| 1022 | } |
| 1023 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1024 | void VG_(emit_popv_reg) ( Int sz, Int reg ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1025 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1026 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1027 | if (sz == 2) { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1028 | VG_(emitB) ( 0x66 ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1029 | } else { |
| 1030 | vg_assert(sz == 4); |
| 1031 | } |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1032 | VG_(emitB) ( 0x58 + reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1033 | if (dis) |
| 1034 | VG_(printf)("\n\t\tpop%c %s\n", nameISize(sz), nameIReg(sz,reg)); |
| 1035 | } |
| 1036 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1037 | void VG_(emit_pushl_lit32) ( UInt int32 ) |
| 1038 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1039 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1040 | VG_(emitB) ( 0x68 ); |
| 1041 | VG_(emitL) ( int32 ); |
| 1042 | if (dis) |
| 1043 | VG_(printf)("\n\t\tpushl $0x%x\n", int32 ); |
| 1044 | } |
| 1045 | |
| 1046 | void VG_(emit_pushl_lit8) ( Int lit8 ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1047 | { |
| 1048 | vg_assert(lit8 >= -128 && lit8 < 128); |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1049 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1050 | VG_(emitB) ( 0x6A ); |
| 1051 | VG_(emitB) ( (UChar)((UInt)lit8) ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1052 | if (dis) |
| 1053 | VG_(printf)("\n\t\tpushl $%d\n", lit8 ); |
| 1054 | } |
| 1055 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1056 | void VG_(emit_cmpl_zero_reg) ( Bool simd_flags, Int reg ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1057 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1058 | VG_(new_emit)(simd_flags, False, FlagsOSZACP); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1059 | VG_(emitB) ( 0x83 ); |
| 1060 | VG_(emit_amode_ereg_greg) ( reg, 7 /* Grp 3 opcode for CMP */ ); |
| 1061 | VG_(emitB) ( 0x00 ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1062 | if (dis) |
| 1063 | VG_(printf)("\n\t\tcmpl $0, %s\n", nameIReg(4,reg)); |
| 1064 | } |
| 1065 | |
| 1066 | static void emit_swapl_reg_ECX ( Int reg ) |
| 1067 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1068 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1069 | VG_(emitB) ( 0x87 ); /* XCHG Gv,Ev */ |
| 1070 | VG_(emit_amode_ereg_greg) ( reg, R_ECX ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1071 | if (dis) |
| 1072 | VG_(printf)("\n\t\txchgl %%ecx, %s\n", nameIReg(4,reg)); |
| 1073 | } |
| 1074 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1075 | void VG_(emit_swapl_reg_EAX) ( Int reg ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1076 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1077 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1078 | VG_(emitB) ( 0x90 + reg ); /* XCHG Gv,eAX */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1079 | if (dis) |
| 1080 | VG_(printf)("\n\t\txchgl %%eax, %s\n", nameIReg(4,reg)); |
| 1081 | } |
| 1082 | |
| 1083 | static void emit_swapl_reg_reg ( Int reg1, Int reg2 ) |
| 1084 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1085 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1086 | VG_(emitB) ( 0x87 ); /* XCHG Gv,Ev */ |
| 1087 | VG_(emit_amode_ereg_greg) ( reg1, reg2 ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1088 | if (dis) |
| 1089 | VG_(printf)("\n\t\txchgl %s, %s\n", nameIReg(4,reg1), |
| 1090 | nameIReg(4,reg2)); |
| 1091 | } |
| 1092 | |
| 1093 | static void emit_bswapl_reg ( Int reg ) |
| 1094 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1095 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1096 | VG_(emitB) ( 0x0F ); |
| 1097 | VG_(emitB) ( 0xC8 + reg ); /* BSWAP r32 */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1098 | if (dis) |
| 1099 | VG_(printf)("\n\t\tbswapl %s\n", nameIReg(4,reg)); |
| 1100 | } |
| 1101 | |
| 1102 | static void emit_movl_reg_reg ( Int regs, Int regd ) |
| 1103 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1104 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1105 | VG_(emitB) ( 0x89 ); /* MOV Gv,Ev */ |
| 1106 | VG_(emit_amode_ereg_greg) ( regd, regs ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1107 | if (dis) |
| 1108 | VG_(printf)("\n\t\tmovl %s, %s\n", nameIReg(4,regs), nameIReg(4,regd)); |
| 1109 | } |
| 1110 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1111 | void VG_(emit_movv_lit_offregmem) ( Int sz, UInt lit, Int off, Int memreg ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1112 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1113 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1114 | if (sz == 2) { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1115 | VG_(emitB) ( 0x66 ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1116 | } else { |
| 1117 | vg_assert(sz == 4); |
| 1118 | } |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1119 | VG_(emitB) ( 0xC7 ); /* Grp11 Ev */ |
| 1120 | VG_(emit_amode_offregmem_reg) ( off, memreg, 0 /* Grp11 subopcode for MOV */ ); |
| 1121 | if (sz == 2) VG_(emitW) ( lit ); else VG_(emitL) ( lit ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1122 | if (dis) |
| 1123 | VG_(printf)( "\n\t\tmov%c\t$0x%x, 0x%x(%s)\n", |
| 1124 | nameISize(sz), lit, off, nameIReg(4,memreg) ); |
| 1125 | } |
| 1126 | |
| 1127 | |
| 1128 | /*----------------------------------------------------*/ |
| 1129 | /*--- b-size (1 byte) instruction emitters ---*/ |
| 1130 | /*----------------------------------------------------*/ |
| 1131 | |
| 1132 | /* There is some doubt as to whether C6 (Grp 11) is in the |
| 1133 | 486 insn set. ToDo: investigate. */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1134 | void VG_(emit_movb_lit_offregmem) ( UInt lit, Int off, Int memreg ) |
| 1135 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1136 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1137 | VG_(emitB) ( 0xC6 ); /* Grp11 Eb */ |
| 1138 | VG_(emit_amode_offregmem_reg) ( off, memreg, 0 /* Grp11 subopcode for MOV */ ); |
| 1139 | VG_(emitB) ( lit ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1140 | if (dis) |
| 1141 | VG_(printf)( "\n\t\tmovb\t$0x%x, 0x%x(%s)\n", |
| 1142 | lit, off, nameIReg(4,memreg) ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1143 | } |
| 1144 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1145 | static void emit_nonshiftopb_offregmem_reg ( Bool simd_flags, Opcode opc, |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1146 | Int off, Int areg, Int reg ) |
| 1147 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1148 | VG_(new_emit)(simd_flags, nonshiftop_use(opc), nonshiftop_set(opc)); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1149 | VG_(emitB) ( 2 + mkPrimaryOpcode(opc) ); /* op Eb, Gb */ |
| 1150 | VG_(emit_amode_offregmem_reg) ( off, areg, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1151 | if (dis) |
| 1152 | VG_(printf)( "\n\t\t%sb\t0x%x(%s), %s\n", |
njn | 4ba5a79 | 2002-09-30 10:23:54 +0000 | [diff] [blame] | 1153 | VG_(name_UOpcode)(False,opc), off, nameIReg(4,areg), |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1154 | nameIReg(1,reg)); |
| 1155 | } |
| 1156 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1157 | static void emit_nonshiftopb_lit_offregmem ( Bool simd_flags, Opcode opc, |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 1158 | UInt lit, Int off, Int areg ) |
| 1159 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1160 | VG_(new_emit)(simd_flags, nonshiftop_use(opc), nonshiftop_set(opc)); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 1161 | VG_(emitB) ( 0x80 ); |
| 1162 | VG_(emit_amode_offregmem_reg) ( off, areg, mkGrp1opcode(opc) ); |
| 1163 | VG_(emitB) ( lit ); |
| 1164 | if (dis) |
| 1165 | VG_(printf)( "\n\t\t%sb\t$0x%x, 0x%x(%s)\n", |
| 1166 | VG_(name_UOpcode)(False,opc), lit, off, nameIReg(4,areg)); |
| 1167 | } |
| 1168 | |
sewardj | a2c5a73 | 2002-12-15 03:10:42 +0000 | [diff] [blame] | 1169 | #if 0 |
| 1170 | /* evidently unused */ |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1171 | static void emit_nonshiftopb_reg_offregmem ( Bool simd_flags, Opcode opc, |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 1172 | Int off, Int areg, Int reg ) |
| 1173 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1174 | VG_(new_emit)(simd_flags, nonshiftop_use(opc), nonshiftop_set(opc)); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 1175 | VG_(emitB) ( 0 + mkPrimaryOpcode(opc) ); /* op Gb, Eb */ |
| 1176 | VG_(emit_amode_offregmem_reg) ( off, areg, reg ); |
| 1177 | if (dis) |
| 1178 | VG_(printf)( "\n\t\t%sb\t0x%s , %x(%s)\n", |
| 1179 | VG_(name_UOpcode)(False,opc), |
| 1180 | nameIReg(1,reg), |
| 1181 | off, nameIReg(4,areg)); |
| 1182 | } |
sewardj | a2c5a73 | 2002-12-15 03:10:42 +0000 | [diff] [blame] | 1183 | #endif |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 1184 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1185 | void VG_(emit_movb_reg_offregmem) ( Int reg, Int off, Int areg ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1186 | { |
| 1187 | /* Could do better when reg == %al. */ |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1188 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1189 | VG_(emitB) ( 0x88 ); /* MOV G1, E1 */ |
| 1190 | VG_(emit_amode_offregmem_reg) ( off, areg, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1191 | if (dis) |
| 1192 | VG_(printf)( "\n\t\tmovb\t%s, 0x%x(%s)\n", |
| 1193 | nameIReg(1,reg), off, nameIReg(4,areg)); |
| 1194 | } |
| 1195 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1196 | static void emit_nonshiftopb_reg_reg ( Bool simd_flags, Opcode opc, |
| 1197 | Int reg1, Int reg2 ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1198 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1199 | VG_(new_emit)(simd_flags, nonshiftop_use(opc), nonshiftop_set(opc)); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1200 | VG_(emitB) ( 2 + mkPrimaryOpcode(opc) ); /* op Eb, Gb */ |
| 1201 | VG_(emit_amode_ereg_greg) ( reg1, reg2 ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1202 | if (dis) |
| 1203 | VG_(printf)( "\n\t\t%sb\t%s, %s\n", |
njn | 4ba5a79 | 2002-09-30 10:23:54 +0000 | [diff] [blame] | 1204 | VG_(name_UOpcode)(False,opc), |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1205 | nameIReg(1,reg1), nameIReg(1,reg2)); |
| 1206 | } |
| 1207 | |
| 1208 | static void emit_movb_reg_regmem ( Int reg1, Int reg2 ) |
| 1209 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1210 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1211 | VG_(emitB) ( 0x88 ); /* MOV G1, E1 */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1212 | emit_amode_regmem_reg ( reg2, reg1 ); |
| 1213 | if (dis) |
| 1214 | VG_(printf)( "\n\t\tmovb\t%s, (%s)\n", nameIReg(1,reg1), |
| 1215 | nameIReg(4,reg2)); |
| 1216 | } |
| 1217 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1218 | static void emit_nonshiftopb_lit_reg ( Bool simd_flags, Opcode opc, |
| 1219 | UInt lit, Int reg ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1220 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1221 | VG_(new_emit)(simd_flags, nonshiftop_use(opc), nonshiftop_set(opc)); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1222 | VG_(emitB) ( 0x80 ); /* Grp1 Ib,Eb */ |
| 1223 | VG_(emit_amode_ereg_greg) ( reg, mkGrp1opcode(opc) ); |
| 1224 | VG_(emitB) ( lit & 0x000000FF ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1225 | if (dis) |
njn | 4ba5a79 | 2002-09-30 10:23:54 +0000 | [diff] [blame] | 1226 | VG_(printf)( "\n\t\t%sb\t$0x%x, %s\n", VG_(name_UOpcode)(False,opc), |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1227 | lit, nameIReg(1,reg)); |
| 1228 | } |
| 1229 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1230 | static void emit_shiftopb_lit_reg ( Bool simd_flags, Opcode opc, |
| 1231 | UInt lit, Int reg ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1232 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1233 | VG_(new_emit)(simd_flags, shiftop_use(opc), shiftop_set(opc)); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1234 | VG_(emitB) ( 0xC0 ); /* Grp2 Ib,Eb */ |
| 1235 | VG_(emit_amode_ereg_greg) ( reg, mkGrp2opcode(opc) ); |
| 1236 | VG_(emitB) ( lit ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1237 | if (dis) |
| 1238 | VG_(printf)( "\n\t\t%sb\t$%d, %s\n", |
njn | 4ba5a79 | 2002-09-30 10:23:54 +0000 | [diff] [blame] | 1239 | VG_(name_UOpcode)(False,opc), |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1240 | lit, nameIReg(1,reg)); |
| 1241 | } |
| 1242 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1243 | void VG_(emit_unaryopb_reg) ( Bool simd_flags, Opcode opc, Int reg ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1244 | { |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1245 | switch (opc) { |
| 1246 | case INC: |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1247 | VG_(new_emit)(simd_flags, FlagsEmpty, FlagsOSZAP); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1248 | VG_(emitB) ( 0xFE ); |
| 1249 | VG_(emit_amode_ereg_greg) ( reg, mkGrp4opcode(INC) ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1250 | if (dis) |
| 1251 | VG_(printf)( "\n\t\tincb\t%s\n", nameIReg(1,reg)); |
| 1252 | break; |
| 1253 | case DEC: |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1254 | VG_(new_emit)(simd_flags, FlagsEmpty, FlagsOSZAP); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1255 | VG_(emitB) ( 0xFE ); |
| 1256 | VG_(emit_amode_ereg_greg) ( reg, mkGrp4opcode(DEC) ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1257 | if (dis) |
| 1258 | VG_(printf)( "\n\t\tdecb\t%s\n", nameIReg(1,reg)); |
| 1259 | break; |
| 1260 | case NOT: |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1261 | VG_(new_emit)(simd_flags, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1262 | VG_(emitB) ( 0xF6 ); |
| 1263 | VG_(emit_amode_ereg_greg) ( reg, mkGrp3opcode(NOT) ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1264 | if (dis) |
| 1265 | VG_(printf)( "\n\t\tnotb\t%s\n", nameIReg(1,reg)); |
| 1266 | break; |
| 1267 | case NEG: |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1268 | VG_(new_emit)(simd_flags, FlagsEmpty, FlagsOSZACP); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1269 | VG_(emitB) ( 0xF6 ); |
| 1270 | VG_(emit_amode_ereg_greg) ( reg, mkGrp3opcode(NEG) ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1271 | if (dis) |
| 1272 | VG_(printf)( "\n\t\tnegb\t%s\n", nameIReg(1,reg)); |
| 1273 | break; |
| 1274 | default: |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 1275 | VG_(core_panic)("VG_(emit_unaryopb_reg)"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1276 | } |
| 1277 | } |
| 1278 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1279 | void VG_(emit_testb_lit_reg) ( Bool simd_flags, UInt lit, Int reg ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1280 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1281 | VG_(new_emit)(simd_flags, FlagsEmpty, FlagsOSZACP); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1282 | VG_(emitB) ( 0xF6 ); /* Grp3 Eb */ |
| 1283 | VG_(emit_amode_ereg_greg) ( reg, 0 /* Grp3 subopcode for TEST */ ); |
| 1284 | VG_(emitB) ( lit ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1285 | if (dis) |
| 1286 | VG_(printf)("\n\t\ttestb $0x%x, %s\n", lit, nameIReg(1,reg)); |
| 1287 | } |
| 1288 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1289 | /*----------------------------------------------------*/ |
| 1290 | /*--- zero-extended load emitters ---*/ |
| 1291 | /*----------------------------------------------------*/ |
| 1292 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1293 | void VG_(emit_movzbl_offregmem_reg) ( Int off, Int regmem, Int reg ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1294 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1295 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1296 | VG_(emitB) ( 0x0F ); VG_(emitB) ( 0xB6 ); /* MOVZBL */ |
| 1297 | VG_(emit_amode_offregmem_reg) ( off, regmem, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1298 | if (dis) |
| 1299 | VG_(printf)( "\n\t\tmovzbl\t0x%x(%s), %s\n", |
| 1300 | off, nameIReg(4,regmem), nameIReg(4,reg)); |
| 1301 | } |
| 1302 | |
| 1303 | static void emit_movzbl_regmem_reg ( Int reg1, Int reg2 ) |
| 1304 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1305 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1306 | VG_(emitB) ( 0x0F ); VG_(emitB) ( 0xB6 ); /* MOVZBL */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1307 | emit_amode_regmem_reg ( reg1, reg2 ); |
| 1308 | if (dis) |
| 1309 | VG_(printf)( "\n\t\tmovzbl\t(%s), %s\n", nameIReg(4,reg1), |
| 1310 | nameIReg(4,reg2)); |
| 1311 | } |
| 1312 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1313 | void VG_(emit_movzwl_offregmem_reg) ( Int off, Int areg, Int reg ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1314 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1315 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1316 | VG_(emitB) ( 0x0F ); VG_(emitB) ( 0xB7 ); /* MOVZWL */ |
| 1317 | VG_(emit_amode_offregmem_reg) ( off, areg, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1318 | if (dis) |
| 1319 | VG_(printf)( "\n\t\tmovzwl\t0x%x(%s), %s\n", |
| 1320 | off, nameIReg(4,areg), nameIReg(4,reg)); |
| 1321 | } |
| 1322 | |
| 1323 | static void emit_movzwl_regmem_reg ( Int reg1, Int reg2 ) |
| 1324 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1325 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1326 | VG_(emitB) ( 0x0F ); VG_(emitB) ( 0xB7 ); /* MOVZWL */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1327 | emit_amode_regmem_reg ( reg1, reg2 ); |
| 1328 | if (dis) |
| 1329 | VG_(printf)( "\n\t\tmovzwl\t(%s), %s\n", nameIReg(4,reg1), |
| 1330 | nameIReg(4,reg2)); |
| 1331 | } |
| 1332 | |
| 1333 | /*----------------------------------------------------*/ |
| 1334 | /*--- FPU instruction emitters ---*/ |
| 1335 | /*----------------------------------------------------*/ |
| 1336 | |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 1337 | static void emit_get_sse_state ( void ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1338 | { |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 1339 | Int off = 4 * VGOFF_(m_ssestate); |
| 1340 | if (VG_(have_ssestate)) { |
| 1341 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
| 1342 | VG_(emitB) ( 0x0F ); |
| 1343 | VG_(emitB) ( 0xAE ); VG_(emitB) ( 0x8D ); /* fxrstor d32(%ebp) */ |
| 1344 | VG_(emitL) ( off ); |
| 1345 | if (dis) |
| 1346 | VG_(printf)("\n\t\tfxrstor\t%d(%%ebp)\n", off ); |
| 1347 | } else { |
| 1348 | /* Not a SSE-capable CPU. Just do frstor. */ |
| 1349 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
| 1350 | VG_(emitB) ( 0xDD ); VG_(emitB) ( 0xA5 ); /* frstor d32(%ebp) */ |
| 1351 | VG_(emitL) ( off ); |
| 1352 | if (dis) |
| 1353 | VG_(printf)("\n\t\tfrstor\t%d(%%ebp)\n", off ); |
| 1354 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1355 | } |
| 1356 | |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 1357 | static void emit_put_sse_state ( void ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1358 | { |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 1359 | Int off = 4 * VGOFF_(m_ssestate); |
| 1360 | if (VG_(have_ssestate)) { |
| 1361 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
| 1362 | VG_(emitB) ( 0x0F ); |
| 1363 | VG_(emitB) ( 0xAE ); VG_(emitB) ( 0x85 ); /* fxsave d32(%ebp) */ |
| 1364 | VG_(emitL) ( off ); |
| 1365 | if (dis) |
| 1366 | VG_(printf)("\n\t\tfxsave\t%d(%%ebp)\n", off ); |
| 1367 | } else { |
| 1368 | /* Not a SSE-capable CPU. Just do fnsave. */ |
| 1369 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
| 1370 | VG_(emitB) ( 0xDD ); VG_(emitB) ( 0xB5 ); /* fnsave d32(%ebp) */ |
| 1371 | VG_(emitL) ( off ); |
| 1372 | if (dis) |
| 1373 | VG_(printf)("\n\t\tfnsave\t%d(%%ebp)\n", off ); |
| 1374 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1375 | } |
| 1376 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1377 | static void emit_fpu_no_mem ( FlagSet uses_sflags, |
| 1378 | FlagSet sets_sflags, |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 1379 | UChar first_byte, |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1380 | UChar second_byte ) |
| 1381 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1382 | VG_(new_emit)(True, uses_sflags, sets_sflags); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1383 | VG_(emitB) ( first_byte ); |
| 1384 | VG_(emitB) ( second_byte ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1385 | if (dis) |
| 1386 | VG_(printf)("\n\t\tfpu-0x%x:0x%x\n", |
| 1387 | (UInt)first_byte, (UInt)second_byte ); |
| 1388 | } |
| 1389 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1390 | static void emit_fpu_regmem ( FlagSet uses_sflags, |
| 1391 | FlagSet sets_sflags, |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 1392 | UChar first_byte, |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1393 | UChar second_byte_masked, |
| 1394 | Int reg ) |
| 1395 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1396 | VG_(new_emit)(True, uses_sflags, sets_sflags); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1397 | VG_(emitB) ( first_byte ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1398 | emit_amode_regmem_reg ( reg, second_byte_masked >> 3 ); |
| 1399 | if (dis) |
| 1400 | VG_(printf)("\n\t\tfpu-0x%x:0x%x-(%s)\n", |
| 1401 | (UInt)first_byte, (UInt)second_byte_masked, |
| 1402 | nameIReg(4,reg) ); |
| 1403 | } |
| 1404 | |
sewardj | 3d7c9c8 | 2003-03-26 21:08:13 +0000 | [diff] [blame] | 1405 | static void emit_MMX2_regmem ( FlagSet uses_sflags, |
| 1406 | FlagSet sets_sflags, |
| 1407 | UChar first_byte, |
| 1408 | UChar second_byte, |
| 1409 | Int ireg ) |
| 1410 | { |
| 1411 | VG_(new_emit)(True, uses_sflags, sets_sflags); |
| 1412 | VG_(emitB) ( 0x0F ); |
| 1413 | VG_(emitB) ( first_byte ); |
| 1414 | second_byte &= 0x38; /* mask out mod and rm fields */ |
| 1415 | emit_amode_regmem_reg ( ireg, second_byte >> 3 ); |
| 1416 | if (dis) |
| 1417 | VG_(printf)("\n\t\tmmx2-0x%x:0x%x-(%s)\n", |
| 1418 | (UInt)first_byte, (UInt)second_byte, |
| 1419 | nameIReg(4,ireg) ); |
| 1420 | } |
| 1421 | |
sewardj | febaa3b | 2003-05-25 01:07:34 +0000 | [diff] [blame] | 1422 | static void emit_SSE2a ( FlagSet uses_sflags, |
| 1423 | FlagSet sets_sflags, |
| 1424 | UChar first_byte, |
| 1425 | UChar second_byte, |
| 1426 | UChar third_byte, |
| 1427 | Int ireg ) |
| 1428 | { |
| 1429 | VG_(new_emit)(True, uses_sflags, sets_sflags); |
| 1430 | VG_(emitB) ( first_byte ); |
| 1431 | VG_(emitB) ( second_byte ); |
| 1432 | third_byte &= 0x38; /* mask out mod and rm fields */ |
| 1433 | emit_amode_regmem_reg ( ireg, third_byte >> 3 ); |
| 1434 | if (dis) |
| 1435 | VG_(printf)("\n\t\tsse-0x%x:0x%x:0x%x-(%s)\n", |
| 1436 | (UInt)first_byte, (UInt)second_byte, (UInt)third_byte, |
| 1437 | nameIReg(4,ireg) ); |
| 1438 | } |
| 1439 | |
| 1440 | static void emit_SSE3a ( FlagSet uses_sflags, |
| 1441 | FlagSet sets_sflags, |
| 1442 | UChar first_byte, |
| 1443 | UChar second_byte, |
| 1444 | UChar third_byte, |
| 1445 | UChar fourth_byte, |
| 1446 | Int ireg ) |
| 1447 | { |
| 1448 | VG_(new_emit)(True, uses_sflags, sets_sflags); |
| 1449 | VG_(emitB) ( first_byte ); |
| 1450 | VG_(emitB) ( second_byte ); |
| 1451 | VG_(emitB) ( third_byte ); |
| 1452 | fourth_byte &= 0x38; /* mask out mod and rm fields */ |
| 1453 | emit_amode_regmem_reg ( ireg, fourth_byte >> 3 ); |
| 1454 | if (dis) |
| 1455 | VG_(printf)("\n\t\tsse-0x%x:0x%x:0x%x:0x%x-(%s)\n", |
| 1456 | (UInt)first_byte, (UInt)second_byte, |
| 1457 | (UInt)third_byte, (UInt)fourth_byte, |
| 1458 | nameIReg(4,ireg) ); |
| 1459 | } |
| 1460 | |
sewardj | 8f33ba6 | 2003-06-14 12:00:45 +0000 | [diff] [blame] | 1461 | static void emit_SSE3g_RegRd ( FlagSet uses_sflags, |
| 1462 | FlagSet sets_sflags, |
| 1463 | UChar first_byte, |
| 1464 | UChar second_byte, |
| 1465 | UChar third_byte, |
| 1466 | UChar fourth_byte, |
| 1467 | Int ireg ) |
sewardj | febaa3b | 2003-05-25 01:07:34 +0000 | [diff] [blame] | 1468 | { |
| 1469 | VG_(new_emit)(True, uses_sflags, sets_sflags); |
| 1470 | VG_(emitB) ( first_byte ); |
| 1471 | VG_(emitB) ( second_byte ); |
| 1472 | VG_(emitB) ( third_byte ); |
| 1473 | fourth_byte &= 0x38; /* mask out mod and rm fields */ |
| 1474 | fourth_byte |= 0xC0; /* set top two bits: mod = 11b */ |
| 1475 | fourth_byte |= (ireg & 7); /* patch in our ireg */ |
| 1476 | VG_(emitB) ( fourth_byte ); |
| 1477 | if (dis) |
sewardj | 02af6bc | 2003-06-12 00:56:06 +0000 | [diff] [blame] | 1478 | VG_(printf)( |
sewardj | 8f33ba6 | 2003-06-14 12:00:45 +0000 | [diff] [blame] | 1479 | "\n\t\tireg-to-ssereg--0x%x:0x%x:0x%x:0x%x-(%s)\n", |
sewardj | 02af6bc | 2003-06-12 00:56:06 +0000 | [diff] [blame] | 1480 | (UInt)first_byte, (UInt)second_byte, |
| 1481 | (UInt)third_byte, (UInt)fourth_byte, |
| 1482 | nameIReg(4,ireg) |
| 1483 | ); |
sewardj | febaa3b | 2003-05-25 01:07:34 +0000 | [diff] [blame] | 1484 | } |
| 1485 | |
sewardj | 8f33ba6 | 2003-06-14 12:00:45 +0000 | [diff] [blame] | 1486 | static void emit_SSE3g1_RegRd ( FlagSet uses_sflags, |
| 1487 | FlagSet sets_sflags, |
| 1488 | UChar first_byte, |
| 1489 | UChar second_byte, |
| 1490 | UChar third_byte, |
| 1491 | UChar fourth_byte, |
| 1492 | UChar fifth_byte, |
| 1493 | Int ireg ) |
| 1494 | { |
| 1495 | VG_(new_emit)(True, uses_sflags, sets_sflags); |
| 1496 | VG_(emitB) ( first_byte ); |
| 1497 | VG_(emitB) ( second_byte ); |
| 1498 | VG_(emitB) ( third_byte ); |
| 1499 | fourth_byte &= 0x38; /* mask out mod and rm fields */ |
| 1500 | fourth_byte |= 0xC0; /* set top two bits: mod = 11b */ |
| 1501 | fourth_byte |= (ireg & 7); /* patch in our ireg */ |
| 1502 | VG_(emitB) ( fourth_byte ); |
| 1503 | VG_(emitB) ( fifth_byte ); |
| 1504 | if (dis) |
| 1505 | VG_(printf)( |
| 1506 | "\n\t\tireg-to-ssereg--0x%x:0x%x:0x%x:0x%x:0x%x-(%s)\n", |
| 1507 | (UInt)first_byte, (UInt)second_byte, |
| 1508 | (UInt)third_byte, (UInt)fourth_byte, (UInt)fifth_byte, |
| 1509 | nameIReg(4,ireg) |
| 1510 | ); |
| 1511 | } |
| 1512 | |
sewardj | b31b06d | 2003-06-13 00:26:02 +0000 | [diff] [blame] | 1513 | static void emit_SSE3g1_RegWr ( FlagSet uses_sflags, |
| 1514 | FlagSet sets_sflags, |
| 1515 | UChar first_byte, |
| 1516 | UChar second_byte, |
| 1517 | UChar third_byte, |
| 1518 | UChar fourth_byte, |
| 1519 | UChar fifth_byte, |
| 1520 | Int ireg ) |
| 1521 | { |
| 1522 | VG_(new_emit)(True, uses_sflags, sets_sflags); |
| 1523 | VG_(emitB) ( first_byte ); |
| 1524 | VG_(emitB) ( second_byte ); |
| 1525 | VG_(emitB) ( third_byte ); |
| 1526 | fourth_byte &= 0xC7; /* mask out reg field */ |
| 1527 | fourth_byte |= 0xC0; /* set top two bits: mod = 11b */ |
| 1528 | fourth_byte |= ((ireg & 7) << 3); /* patch in our ireg */ |
| 1529 | VG_(emitB) ( fourth_byte ); |
| 1530 | VG_(emitB) ( fifth_byte ); |
| 1531 | if (dis) |
| 1532 | VG_(printf)( |
| 1533 | "\n\t\tssereg-to-ireg--0x%x:0x%x:0x%x:0x%x:0x%x-(%s)\n", |
| 1534 | (UInt)first_byte, (UInt)second_byte, |
| 1535 | (UInt)third_byte, (UInt)fourth_byte, (UInt)fifth_byte, |
| 1536 | nameIReg(4,ireg) |
| 1537 | ); |
| 1538 | } |
| 1539 | |
sewardj | 8f33ba6 | 2003-06-14 12:00:45 +0000 | [diff] [blame] | 1540 | static void emit_SSE3g_RegWr ( FlagSet uses_sflags, |
| 1541 | FlagSet sets_sflags, |
| 1542 | UChar first_byte, |
| 1543 | UChar second_byte, |
| 1544 | UChar third_byte, |
| 1545 | UChar fourth_byte, |
| 1546 | Int ireg ) |
sewardj | b31b06d | 2003-06-13 00:26:02 +0000 | [diff] [blame] | 1547 | { |
| 1548 | VG_(new_emit)(True, uses_sflags, sets_sflags); |
| 1549 | VG_(emitB) ( first_byte ); |
| 1550 | VG_(emitB) ( second_byte ); |
| 1551 | VG_(emitB) ( third_byte ); |
sewardj | 8f33ba6 | 2003-06-14 12:00:45 +0000 | [diff] [blame] | 1552 | fourth_byte &= 0xC7; /* mask out reg field */ |
sewardj | b31b06d | 2003-06-13 00:26:02 +0000 | [diff] [blame] | 1553 | fourth_byte |= 0xC0; /* set top two bits: mod = 11b */ |
sewardj | 8f33ba6 | 2003-06-14 12:00:45 +0000 | [diff] [blame] | 1554 | fourth_byte |= ((ireg & 7) << 3); /* patch in our ireg */ |
sewardj | b31b06d | 2003-06-13 00:26:02 +0000 | [diff] [blame] | 1555 | VG_(emitB) ( fourth_byte ); |
sewardj | b31b06d | 2003-06-13 00:26:02 +0000 | [diff] [blame] | 1556 | if (dis) |
| 1557 | VG_(printf)( |
sewardj | 8f33ba6 | 2003-06-14 12:00:45 +0000 | [diff] [blame] | 1558 | "\n\t\tssereg-to-ireg--0x%x:0x%x:0x%x:0x%x-(%s)\n", |
sewardj | b31b06d | 2003-06-13 00:26:02 +0000 | [diff] [blame] | 1559 | (UInt)first_byte, (UInt)second_byte, |
sewardj | 8f33ba6 | 2003-06-14 12:00:45 +0000 | [diff] [blame] | 1560 | (UInt)third_byte, (UInt)fourth_byte, |
sewardj | b31b06d | 2003-06-13 00:26:02 +0000 | [diff] [blame] | 1561 | nameIReg(4,ireg) |
| 1562 | ); |
| 1563 | } |
| 1564 | |
sewardj | febaa3b | 2003-05-25 01:07:34 +0000 | [diff] [blame] | 1565 | static void emit_SSE4 ( FlagSet uses_sflags, |
| 1566 | FlagSet sets_sflags, |
| 1567 | UChar first_byte, |
| 1568 | UChar second_byte, |
| 1569 | UChar third_byte, |
| 1570 | UChar fourth_byte ) |
| 1571 | { |
| 1572 | VG_(new_emit)(True, uses_sflags, sets_sflags); |
| 1573 | VG_(emitB) ( first_byte ); |
| 1574 | VG_(emitB) ( second_byte ); |
| 1575 | VG_(emitB) ( third_byte ); |
| 1576 | VG_(emitB) ( fourth_byte ); |
| 1577 | if (dis) |
| 1578 | VG_(printf)("\n\t\tsse-0x%x:0x%x:0x%x:0x%x\n", |
| 1579 | (UInt)first_byte, (UInt)second_byte, |
| 1580 | (UInt)third_byte, (UInt)fourth_byte ); |
| 1581 | } |
| 1582 | |
sewardj | a453fb0 | 2003-06-14 13:22:36 +0000 | [diff] [blame^] | 1583 | static void emit_SSE5 ( FlagSet uses_sflags, |
| 1584 | FlagSet sets_sflags, |
| 1585 | UChar first_byte, |
| 1586 | UChar second_byte, |
| 1587 | UChar third_byte, |
| 1588 | UChar fourth_byte, |
| 1589 | UChar fifth_byte ) |
| 1590 | { |
| 1591 | VG_(new_emit)(True, uses_sflags, sets_sflags); |
| 1592 | VG_(emitB) ( first_byte ); |
| 1593 | VG_(emitB) ( second_byte ); |
| 1594 | VG_(emitB) ( third_byte ); |
| 1595 | VG_(emitB) ( fourth_byte ); |
| 1596 | VG_(emitB) ( fifth_byte ); |
| 1597 | if (dis) |
| 1598 | VG_(printf)("\n\t\tsse-0x%x:0x%x:0x%x:0x%x:0x%x\n", |
| 1599 | (UInt)first_byte, (UInt)second_byte, |
| 1600 | (UInt)third_byte, (UInt)fourth_byte, |
| 1601 | (UInt)fifth_byte ); |
| 1602 | } |
| 1603 | |
sewardj | a60be0e | 2003-05-26 08:47:27 +0000 | [diff] [blame] | 1604 | static void emit_SSE3 ( FlagSet uses_sflags, |
| 1605 | FlagSet sets_sflags, |
| 1606 | UChar first_byte, |
| 1607 | UChar second_byte, |
| 1608 | UChar third_byte ) |
| 1609 | { |
| 1610 | VG_(new_emit)(True, uses_sflags, sets_sflags); |
| 1611 | VG_(emitB) ( first_byte ); |
| 1612 | VG_(emitB) ( second_byte ); |
| 1613 | VG_(emitB) ( third_byte ); |
| 1614 | if (dis) |
| 1615 | VG_(printf)("\n\t\tsse-0x%x:0x%x:0x%x\n", |
| 1616 | (UInt)first_byte, (UInt)second_byte, |
| 1617 | (UInt)third_byte ); |
| 1618 | } |
| 1619 | |
sewardj | ca86001 | 2003-03-27 23:52:58 +0000 | [diff] [blame] | 1620 | static void emit_MMX2_reg_to_mmxreg ( FlagSet uses_sflags, |
| 1621 | FlagSet sets_sflags, |
| 1622 | UChar first_byte, |
| 1623 | UChar second_byte, |
| 1624 | Int ireg ) |
| 1625 | { |
| 1626 | VG_(new_emit)(True, uses_sflags, sets_sflags); |
| 1627 | VG_(emitB) ( 0x0F ); |
| 1628 | VG_(emitB) ( first_byte ); |
| 1629 | second_byte &= 0x38; /* mask out mod and rm fields */ |
| 1630 | second_byte |= 0xC0; /* set top two bits: mod = 11b */ |
| 1631 | second_byte |= (ireg & 7); /* patch in our ireg */ |
| 1632 | VG_(emitB) ( second_byte ); |
| 1633 | if (dis) |
sewardj | d1c9e43 | 2003-04-04 20:40:34 +0000 | [diff] [blame] | 1634 | VG_(printf)("\n\t\tmmx2:reg-to-mmxreg--0x%x:0x%x-(%s)\n", |
| 1635 | (UInt)first_byte, (UInt)second_byte, |
| 1636 | nameIReg(4,ireg) ); |
| 1637 | } |
| 1638 | |
| 1639 | static void emit_MMX2_mmxreg_to_reg ( FlagSet uses_sflags, |
| 1640 | FlagSet sets_sflags, |
| 1641 | UChar first_byte, |
| 1642 | UChar second_byte, |
| 1643 | Int ireg ) |
| 1644 | { |
| 1645 | VG_(new_emit)(True, uses_sflags, sets_sflags); |
| 1646 | VG_(emitB) ( 0x0F ); |
| 1647 | VG_(emitB) ( first_byte ); |
| 1648 | second_byte &= 0x38; /* mask out mod and rm fields */ |
| 1649 | second_byte |= 0xC0; /* set top two bits: mod = 11b */ |
| 1650 | second_byte |= (ireg & 7); /* patch in our ireg */ |
| 1651 | VG_(emitB) ( second_byte ); |
| 1652 | if (dis) |
| 1653 | VG_(printf)("\n\t\tmmx2:mmxreg-to-reg--0x%x:0x%x-(%s)\n", |
sewardj | ca86001 | 2003-03-27 23:52:58 +0000 | [diff] [blame] | 1654 | (UInt)first_byte, (UInt)second_byte, |
| 1655 | nameIReg(4,ireg) ); |
| 1656 | } |
| 1657 | |
| 1658 | static void emit_MMX3_no_mem ( FlagSet uses_sflags, |
| 1659 | FlagSet sets_sflags, |
| 1660 | UChar first_byte, |
| 1661 | UChar second_byte, |
| 1662 | UChar third_byte ) |
| 1663 | { |
| 1664 | VG_(new_emit)(True, uses_sflags, sets_sflags); |
| 1665 | VG_(emitB) ( 0x0F ); |
| 1666 | VG_(emitB) ( first_byte ); |
| 1667 | VG_(emitB) ( second_byte ); |
| 1668 | VG_(emitB) ( third_byte ); |
| 1669 | if (dis) |
| 1670 | VG_(printf)("\n\t\tmmx3-0x%x:0x%x:0x%x\n", |
| 1671 | (UInt)first_byte, (UInt)second_byte, (UInt)third_byte ); |
| 1672 | } |
| 1673 | |
sewardj | 3d7c9c8 | 2003-03-26 21:08:13 +0000 | [diff] [blame] | 1674 | static void emit_MMX2_no_mem ( FlagSet uses_sflags, |
| 1675 | FlagSet sets_sflags, |
| 1676 | UChar first_byte, |
| 1677 | UChar second_byte ) |
| 1678 | { |
| 1679 | VG_(new_emit)(True, uses_sflags, sets_sflags); |
| 1680 | VG_(emitB) ( 0x0F ); |
| 1681 | VG_(emitB) ( first_byte ); |
| 1682 | VG_(emitB) ( second_byte ); |
| 1683 | if (dis) |
| 1684 | VG_(printf)("\n\t\tmmx2-0x%x:0x%x\n", |
| 1685 | (UInt)first_byte, (UInt)second_byte ); |
| 1686 | } |
| 1687 | |
| 1688 | static void emit_MMX1_no_mem ( FlagSet uses_sflags, |
| 1689 | FlagSet sets_sflags, |
| 1690 | UChar first_byte ) |
| 1691 | { |
| 1692 | VG_(new_emit)(True, uses_sflags, sets_sflags); |
| 1693 | VG_(emitB) ( 0x0F ); |
| 1694 | VG_(emitB) ( first_byte ); |
| 1695 | if (dis) |
| 1696 | VG_(printf)("\n\t\tmmx1-0x%x\n", |
| 1697 | (UInt)first_byte ); |
| 1698 | } |
| 1699 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1700 | |
| 1701 | /*----------------------------------------------------*/ |
| 1702 | /*--- misc instruction emitters ---*/ |
| 1703 | /*----------------------------------------------------*/ |
| 1704 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1705 | void VG_(emit_call_reg) ( Int reg ) |
| 1706 | { |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 1707 | VG_(new_emit)(False, FlagsEmpty, FlagsOSZACP); /* XXX */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1708 | VG_(emitB) ( 0xFF ); /* Grp5 */ |
| 1709 | VG_(emit_amode_ereg_greg) ( reg, mkGrp5opcode(CALLM) ); |
| 1710 | if (dis) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1711 | VG_(printf)( "\n\t\tcall\t*%s\n", nameIReg(4,reg) ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1712 | } |
| 1713 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1714 | static |
| 1715 | void emit_call_star_EBP_off ( Bool simd_flags, Int byte_off, |
| 1716 | FlagSet use_flag, FlagSet set_flag ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1717 | { |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 1718 | /* Used for helpers which expect to see Simd flags in Real flags */ |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1719 | VG_(new_emit)(simd_flags, use_flag, set_flag); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 1720 | |
| 1721 | if (byte_off < -128 || byte_off > 127) { |
| 1722 | VG_(emitB) ( 0xFF ); |
| 1723 | VG_(emitB) ( 0x95 ); |
| 1724 | VG_(emitL) ( byte_off ); |
| 1725 | } else { |
| 1726 | VG_(emitB) ( 0xFF ); |
| 1727 | VG_(emitB) ( 0x55 ); |
| 1728 | VG_(emitB) ( byte_off ); |
| 1729 | } |
| 1730 | if (dis) |
| 1731 | VG_(printf)( "\n\t\tcall * %d(%%ebp)\n", byte_off ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1732 | } |
| 1733 | |
sewardj | a2c5a73 | 2002-12-15 03:10:42 +0000 | [diff] [blame] | 1734 | #if 0 |
| 1735 | /* evidently unused */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1736 | static void emit_addlit8_offregmem ( Int lit8, Int regmem, Int off ) |
| 1737 | { |
| 1738 | vg_assert(lit8 >= -128 && lit8 < 128); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 1739 | VG_(new_emit)(True, FlagsEmpty, FlagsOSZACP); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1740 | VG_(emitB) ( 0x83 ); /* Grp1 Ib,Ev */ |
| 1741 | VG_(emit_amode_offregmem_reg) ( off, regmem, |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1742 | 0 /* Grp1 subopcode for ADD */ ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1743 | VG_(emitB) ( lit8 & 0xFF ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1744 | if (dis) |
| 1745 | VG_(printf)( "\n\t\taddl $%d, %d(%s)\n", lit8, off, |
| 1746 | nameIReg(4,regmem)); |
| 1747 | } |
sewardj | a2c5a73 | 2002-12-15 03:10:42 +0000 | [diff] [blame] | 1748 | #endif |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1749 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1750 | void VG_(emit_add_lit_to_esp) ( Int lit ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1751 | { |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 1752 | if (lit < -128 || lit > 127) VG_(core_panic)("VG_(emit_add_lit_to_esp)"); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 1753 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
| 1754 | VG_(emitB) ( 0x8D ); |
| 1755 | VG_(emitB) ( 0x64 ); |
| 1756 | VG_(emitB) ( 0x24 ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1757 | VG_(emitB) ( lit & 0xFF ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1758 | if (dis) |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 1759 | VG_(printf)( "\n\t\tlea\t%d(%%esp), %%esp\n", lit ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1760 | } |
| 1761 | |
| 1762 | |
| 1763 | static void emit_movb_AL_zeroESPmem ( void ) |
| 1764 | { |
| 1765 | /* movb %al, 0(%esp) */ |
| 1766 | /* 88442400 movb %al, 0(%esp) */ |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1767 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1768 | VG_(emitB) ( 0x88 ); |
| 1769 | VG_(emitB) ( 0x44 ); |
| 1770 | VG_(emitB) ( 0x24 ); |
| 1771 | VG_(emitB) ( 0x00 ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1772 | if (dis) |
| 1773 | VG_(printf)( "\n\t\tmovb %%al, 0(%%esp)\n" ); |
| 1774 | } |
| 1775 | |
| 1776 | static void emit_movb_zeroESPmem_AL ( void ) |
| 1777 | { |
| 1778 | /* movb 0(%esp), %al */ |
| 1779 | /* 8A442400 movb 0(%esp), %al */ |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1780 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1781 | VG_(emitB) ( 0x8A ); |
| 1782 | VG_(emitB) ( 0x44 ); |
| 1783 | VG_(emitB) ( 0x24 ); |
| 1784 | VG_(emitB) ( 0x00 ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1785 | if (dis) |
| 1786 | VG_(printf)( "\n\t\tmovb 0(%%esp), %%al\n" ); |
| 1787 | } |
| 1788 | |
sewardj | a2113f9 | 2002-12-12 23:42:48 +0000 | [diff] [blame] | 1789 | /* Jump target states */ |
| 1790 | #define TGT_UNDEF (1 << 16) |
| 1791 | #define TGT_FORWARD (2 << 16) |
| 1792 | #define TGT_BACKWARD (3 << 16) |
| 1793 | |
| 1794 | static inline Int tgt_state(Int tgt) |
| 1795 | { |
| 1796 | return tgt & 0xffff0000; |
| 1797 | } |
| 1798 | |
| 1799 | static inline Int tgt_addr(Int tgt) |
| 1800 | { |
| 1801 | return tgt & 0x0000ffff; |
| 1802 | } |
| 1803 | |
| 1804 | static inline Int mk_tgt(Int state, Int addr) |
| 1805 | { |
| 1806 | vg_assert(state == TGT_UNDEF |
| 1807 | || state == TGT_FORWARD || state == TGT_BACKWARD); |
| 1808 | vg_assert((addr & 0xffff0000) == 0); |
| 1809 | |
| 1810 | return state | addr; |
| 1811 | } |
| 1812 | |
| 1813 | void VG_(init_target) ( Int *tgt ) |
| 1814 | { |
| 1815 | *tgt = TGT_UNDEF; |
| 1816 | } |
| 1817 | |
| 1818 | void VG_(target_back) ( Int *tgt ) |
| 1819 | { |
| 1820 | vg_assert(tgt_state(*tgt) == TGT_UNDEF); |
| 1821 | |
| 1822 | *tgt = mk_tgt(TGT_BACKWARD, emitted_code_used); |
| 1823 | } |
| 1824 | |
| 1825 | void VG_(target_forward) ( Int *tgt ) |
| 1826 | { |
| 1827 | Int delta; |
| 1828 | |
| 1829 | vg_assert(tgt_state(*tgt) == TGT_FORWARD || |
| 1830 | tgt_state(*tgt) == TGT_UNDEF); |
| 1831 | |
| 1832 | if (tgt_state(*tgt) == TGT_UNDEF) |
| 1833 | return; /* target not used */ |
| 1834 | |
| 1835 | delta = emitted_code_used - (tgt_addr(*tgt) + 1); |
| 1836 | vg_assert(delta >= -128 && delta <= 127); |
| 1837 | vg_assert(tgt_addr(*tgt) >= 0); |
sewardj | bd6473c | 2002-12-12 23:50:22 +0000 | [diff] [blame] | 1838 | vg_assert(tgt_addr(*tgt) < emitted_code_used); |
sewardj | a2113f9 | 2002-12-12 23:42:48 +0000 | [diff] [blame] | 1839 | emitted_code[tgt_addr(*tgt)] = delta; |
| 1840 | if (dis) |
| 1841 | VG_(printf)("(target to jump site %d; delta: %d)\n", |
| 1842 | tgt_addr(*tgt), delta); |
| 1843 | } |
| 1844 | |
| 1845 | void VG_(emit_target_delta) ( Int *tgt ) |
| 1846 | { |
| 1847 | vg_assert(tgt_state(*tgt) == TGT_UNDEF || |
| 1848 | tgt_state(*tgt) == TGT_BACKWARD); |
| 1849 | |
| 1850 | if (tgt_state(*tgt) == TGT_UNDEF) { |
| 1851 | /* forward jump */ |
| 1852 | *tgt = mk_tgt(TGT_FORWARD, emitted_code_used); |
| 1853 | VG_(emitB) (0x00); |
| 1854 | } else { |
| 1855 | /* backward jump */ |
| 1856 | Int delta = emitted_code_used - (tgt_addr(*tgt) + 1); |
| 1857 | vg_assert(delta >= -128 && delta <= 127); |
| 1858 | VG_(emitB) (delta); |
| 1859 | } |
| 1860 | } |
| 1861 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1862 | |
| 1863 | /* Emit a jump short with an 8-bit signed offset. Note that the |
| 1864 | offset is that which should be added to %eip once %eip has been |
| 1865 | advanced over this insn. */ |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1866 | void VG_(emit_jcondshort_delta) ( Bool simd_flags, Condcode cond, Int delta ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1867 | { |
| 1868 | vg_assert(delta >= -128 && delta <= 127); |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1869 | VG_(new_emit)(simd_flags, FlagsOSZCP, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1870 | VG_(emitB) ( 0x70 + (UInt)cond ); |
| 1871 | VG_(emitB) ( (UChar)delta ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1872 | if (dis) |
| 1873 | VG_(printf)( "\n\t\tj%s-8\t%%eip+%d\n", |
njn | 563f96f | 2003-02-03 11:17:46 +0000 | [diff] [blame] | 1874 | VG_(name_UCondcode)(cond), delta ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1875 | } |
| 1876 | |
sewardj | a2113f9 | 2002-12-12 23:42:48 +0000 | [diff] [blame] | 1877 | /* Same as above, but defers emitting the delta */ |
| 1878 | void VG_(emit_jcondshort_target) ( Bool simd, Condcode cond, Int *tgt ) |
| 1879 | { |
sewardj | 706240d | 2002-12-26 17:10:12 +0000 | [diff] [blame] | 1880 | VG_(new_emit)(simd, FlagsOSZCP, FlagsEmpty); |
sewardj | a2113f9 | 2002-12-12 23:42:48 +0000 | [diff] [blame] | 1881 | VG_(emitB) ( 0x70 + (UInt)cond ); |
| 1882 | VG_(emit_target_delta) (tgt); |
| 1883 | if (dis) |
| 1884 | VG_(printf)( "\n\t\tj%s-8\t%%eip+(%d)\n", |
njn | 563f96f | 2003-02-03 11:17:46 +0000 | [diff] [blame] | 1885 | VG_(name_UCondcode)(cond), tgt_addr(*tgt) ); |
sewardj | a2113f9 | 2002-12-12 23:42:48 +0000 | [diff] [blame] | 1886 | } |
| 1887 | |
| 1888 | |
| 1889 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1890 | static void emit_setb_reg ( Bool simd, Int reg, Condcode cond ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1891 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 1892 | VG_(new_emit)(simd, FlagsOSZCP, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1893 | VG_(emitB) ( 0x0F ); VG_(emitB) ( 0x90 + (UChar)cond ); |
| 1894 | VG_(emit_amode_ereg_greg) ( reg, 0 ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1895 | if (dis) |
| 1896 | VG_(printf)("\n\t\tset%s %s\n", |
njn | 563f96f | 2003-02-03 11:17:46 +0000 | [diff] [blame] | 1897 | VG_(name_UCondcode)(cond), nameIReg(1,reg)); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1898 | } |
| 1899 | |
| 1900 | static void emit_ret ( void ) |
| 1901 | { |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 1902 | maybe_emit_put_eflags(); /* make sure flags are stored */ |
sewardj | 706240d | 2002-12-26 17:10:12 +0000 | [diff] [blame] | 1903 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1904 | VG_(emitB) ( 0xC3 ); /* RET */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1905 | if (dis) |
| 1906 | VG_(printf)("\n\t\tret\n"); |
| 1907 | } |
| 1908 | |
sewardj | 22854b9 | 2002-11-30 14:00:47 +0000 | [diff] [blame] | 1909 | /* Predicate used in sanity checks elsewhere - returns true if any |
| 1910 | jump-site is an actual chained jump */ |
| 1911 | Bool VG_(is_chained_jumpsite)(Addr a) |
| 1912 | { |
| 1913 | UChar *cp = (UChar *)a; |
| 1914 | |
| 1915 | return (*cp == 0xE9); /* 0xE9 -- jmp */ |
| 1916 | } |
| 1917 | |
sewardj | 83f1186 | 2002-12-01 02:07:08 +0000 | [diff] [blame] | 1918 | static |
| 1919 | Bool is_fresh_jumpsite(UChar *cp) |
| 1920 | { |
| 1921 | return |
| 1922 | cp[0] == 0x0F && /* UD2 */ |
| 1923 | cp[1] == 0x0B && |
| 1924 | cp[2] == 0x0F && /* UD2 */ |
| 1925 | cp[3] == 0x0B && |
| 1926 | cp[4] == 0x90; /* NOP */ |
| 1927 | } |
| 1928 | |
sewardj | 22854b9 | 2002-11-30 14:00:47 +0000 | [diff] [blame] | 1929 | /* Predicate used in sanity checks elsewhere - returns true if all |
| 1930 | jump-sites are calls to VG_(patch_me) */ |
| 1931 | Bool VG_(is_unchained_jumpsite)(Addr a) |
| 1932 | { |
| 1933 | UChar *cp = (UChar *)a; |
| 1934 | Int delta = ((Addr)&VG_(patch_me)) - (a + VG_PATCHME_CALLSZ); |
| 1935 | Int idelta; |
| 1936 | |
| 1937 | if (*cp++ != 0xE8) /* 0xE8 == call */ |
| 1938 | return False; |
| 1939 | |
| 1940 | idelta = (*cp++) << 0; |
| 1941 | idelta |= (*cp++) << 8; |
| 1942 | idelta |= (*cp++) << 16; |
| 1943 | idelta |= (*cp++) << 24; |
| 1944 | |
| 1945 | return idelta == delta; |
| 1946 | } |
| 1947 | |
| 1948 | /* Return target address for a direct jmp */ |
| 1949 | Addr VG_(get_jmp_dest)(Addr a) |
| 1950 | { |
| 1951 | Int delta; |
| 1952 | UChar *cp = (UChar *)a; |
| 1953 | |
| 1954 | if (*cp++ != 0xE9) /* 0xE9 == jmp */ |
| 1955 | return 0; |
| 1956 | |
| 1957 | delta = (*cp++) << 0; |
| 1958 | delta |= (*cp++) << 8; |
| 1959 | delta |= (*cp++) << 16; |
| 1960 | delta |= (*cp++) << 24; |
| 1961 | |
| 1962 | return a + VG_PATCHME_JMPSZ + delta; |
| 1963 | } |
| 1964 | |
| 1965 | /* unchain a BB by generating a call to VG_(patch_me) */ |
| 1966 | void VG_(unchain_jumpsite)(Addr a) |
| 1967 | { |
| 1968 | Int delta = ((Addr)&VG_(patch_me)) - (a + VG_PATCHME_CALLSZ); |
| 1969 | UChar *cp = (UChar *)a; |
| 1970 | |
| 1971 | if (VG_(is_unchained_jumpsite)(a)) |
| 1972 | return; /* don't write unnecessarily */ |
| 1973 | |
sewardj | 83f1186 | 2002-12-01 02:07:08 +0000 | [diff] [blame] | 1974 | if (!is_fresh_jumpsite(cp)) |
| 1975 | VG_(bb_dechain_count)++; /* update stats */ |
| 1976 | |
sewardj | 22854b9 | 2002-11-30 14:00:47 +0000 | [diff] [blame] | 1977 | *cp++ = 0xE8; /* call */ |
| 1978 | *cp++ = (delta >> 0) & 0xff; |
| 1979 | *cp++ = (delta >> 8) & 0xff; |
| 1980 | *cp++ = (delta >> 16) & 0xff; |
| 1981 | *cp++ = (delta >> 24) & 0xff; |
sewardj | 22854b9 | 2002-11-30 14:00:47 +0000 | [diff] [blame] | 1982 | } |
| 1983 | |
| 1984 | /* This doesn't actually generate a call to VG_(patch_me), but |
| 1985 | reserves enough space in the instruction stream for it to happen |
| 1986 | and records the offset into the jump table. This is because call |
| 1987 | is a relative jump, and so will be affected when this code gets |
| 1988 | moved about. The translation table will "unchain" this basic block |
| 1989 | on insertion (with VG_(unchain_BB)()), and thereby generate a |
| 1990 | proper call instruction. */ |
| 1991 | static void emit_call_patchme( void ) |
| 1992 | { |
| 1993 | vg_assert(VG_PATCHME_CALLSZ == 5); |
| 1994 | |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 1995 | maybe_emit_put_eflags(); /* save flags before end of BB */ |
sewardj | 706240d | 2002-12-26 17:10:12 +0000 | [diff] [blame] | 1996 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
sewardj | 22854b9 | 2002-11-30 14:00:47 +0000 | [diff] [blame] | 1997 | |
| 1998 | if (jumpidx >= VG_MAX_JUMPS) { |
| 1999 | /* If there too many jumps in this basic block, fall back to |
| 2000 | dispatch loop. We still need to keep it the same size as the |
| 2001 | call sequence. */ |
| 2002 | VG_(emitB) ( 0xC3 ); /* ret */ |
| 2003 | VG_(emitB) ( 0x90 ); /* nop */ |
| 2004 | VG_(emitB) ( 0x90 ); /* nop */ |
| 2005 | VG_(emitB) ( 0x90 ); /* nop */ |
| 2006 | VG_(emitB) ( 0x90 ); /* nop */ |
| 2007 | |
| 2008 | if (dis) |
| 2009 | VG_(printf)("\n\t\tret; nop; nop; nop; nop\n"); |
| 2010 | |
| 2011 | if (0 && VG_(clo_verbosity)) |
| 2012 | VG_(message)(Vg_DebugMsg, "too many chained jumps in basic-block"); |
| 2013 | } else { |
| 2014 | jumps[jumpidx++] = emitted_code_used; |
| 2015 | |
| 2016 | VG_(emitB) ( 0x0F ); /* UD2 - undefined instruction */ |
| 2017 | VG_(emitB) ( 0x0B ); |
| 2018 | VG_(emitB) ( 0x0F ); /* UD2 - undefined instruction */ |
| 2019 | VG_(emitB) ( 0x0B ); |
| 2020 | VG_(emitB) ( 0x90 ); /* NOP */ |
| 2021 | |
| 2022 | if (dis) |
| 2023 | VG_(printf)("\n\t\tud2; ud2; nop\n"); |
| 2024 | } |
| 2025 | } |
| 2026 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2027 | void VG_(emit_pushal) ( void ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2028 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2029 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2030 | VG_(emitB) ( 0x60 ); /* PUSHAL */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2031 | if (dis) |
| 2032 | VG_(printf)("\n\t\tpushal\n"); |
| 2033 | } |
| 2034 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2035 | void VG_(emit_popal) ( void ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2036 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2037 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2038 | VG_(emitB) ( 0x61 ); /* POPAL */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2039 | if (dis) |
| 2040 | VG_(printf)("\n\t\tpopal\n"); |
| 2041 | } |
| 2042 | |
| 2043 | static void emit_lea_litreg_reg ( UInt lit, Int regmem, Int reg ) |
| 2044 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2045 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2046 | VG_(emitB) ( 0x8D ); /* LEA M,Gv */ |
| 2047 | VG_(emit_amode_offregmem_reg) ( (Int)lit, regmem, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2048 | if (dis) |
| 2049 | VG_(printf)("\n\t\tleal 0x%x(%s), %s\n", |
| 2050 | lit, nameIReg(4,regmem), nameIReg(4,reg) ); |
| 2051 | } |
| 2052 | |
| 2053 | static void emit_lea_sib_reg ( UInt lit, Int scale, |
| 2054 | Int regbase, Int regindex, Int reg ) |
| 2055 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2056 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2057 | VG_(emitB) ( 0x8D ); /* LEA M,Gv */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2058 | emit_amode_sib_reg ( (Int)lit, scale, regbase, regindex, reg ); |
| 2059 | if (dis) |
| 2060 | VG_(printf)("\n\t\tleal 0x%x(%s,%s,%d), %s\n", |
| 2061 | lit, nameIReg(4,regbase), |
| 2062 | nameIReg(4,regindex), scale, |
| 2063 | nameIReg(4,reg) ); |
| 2064 | } |
| 2065 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2066 | void VG_(emit_AMD_prefetch_reg) ( Int reg ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2067 | { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2068 | VG_(new_emit)(False, FlagsEmpty, FlagsEmpty); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2069 | VG_(emitB) ( 0x0F ); |
| 2070 | VG_(emitB) ( 0x0D ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2071 | emit_amode_regmem_reg ( reg, 1 /* 0 is prefetch; 1 is prefetchw */ ); |
| 2072 | if (dis) |
| 2073 | VG_(printf)("\n\t\tamd-prefetch (%s)\n", nameIReg(4,reg) ); |
| 2074 | } |
| 2075 | |
| 2076 | /*----------------------------------------------------*/ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2077 | /*--- Helper offset -> addr translation ---*/ |
| 2078 | /*----------------------------------------------------*/ |
| 2079 | |
| 2080 | /* Finds the baseBlock offset of a skin-specified helper. |
| 2081 | * Searches through compacts first, then non-compacts. */ |
| 2082 | Int VG_(helper_offset)(Addr a) |
| 2083 | { |
sewardj | 05bcdcb | 2003-05-18 10:05:38 +0000 | [diff] [blame] | 2084 | UInt i; |
njn | f4ce3d3 | 2003-02-10 10:17:26 +0000 | [diff] [blame] | 2085 | Char buf[100]; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2086 | |
| 2087 | for (i = 0; i < VG_(n_compact_helpers); i++) |
| 2088 | if (VG_(compact_helper_addrs)[i] == a) |
| 2089 | return VG_(compact_helper_offsets)[i]; |
| 2090 | for (i = 0; i < VG_(n_noncompact_helpers); i++) |
| 2091 | if (VG_(noncompact_helper_addrs)[i] == a) |
| 2092 | return VG_(noncompact_helper_offsets)[i]; |
| 2093 | |
| 2094 | /* Shouldn't get here */ |
njn | f4ce3d3 | 2003-02-10 10:17:26 +0000 | [diff] [blame] | 2095 | VG_(get_fnname) ( a, buf, 100 ); |
| 2096 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2097 | VG_(printf)( |
njn | f4ce3d3 | 2003-02-10 10:17:26 +0000 | [diff] [blame] | 2098 | "\nCouldn't find offset of helper from its address (%p: %s).\n" |
| 2099 | "A helper function probably used hasn't been registered?\n\n", a, buf); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2100 | |
| 2101 | VG_(printf)(" compact helpers: "); |
| 2102 | for (i = 0; i < VG_(n_compact_helpers); i++) |
| 2103 | VG_(printf)("%p ", VG_(compact_helper_addrs)[i]); |
| 2104 | |
| 2105 | VG_(printf)("\n non-compact helpers: "); |
| 2106 | for (i = 0; i < VG_(n_noncompact_helpers); i++) |
| 2107 | VG_(printf)("%p ", VG_(noncompact_helper_addrs)[i]); |
| 2108 | |
| 2109 | VG_(printf)("\n"); |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 2110 | VG_(skin_panic)("Unfound helper"); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2111 | } |
| 2112 | |
| 2113 | /*----------------------------------------------------*/ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2114 | /*--- Instruction synthesisers ---*/ |
| 2115 | /*----------------------------------------------------*/ |
| 2116 | |
| 2117 | static Condcode invertCondition ( Condcode cond ) |
| 2118 | { |
| 2119 | return (Condcode)(1 ^ (UInt)cond); |
| 2120 | } |
| 2121 | |
| 2122 | |
| 2123 | /* Synthesise a call to *baseBlock[offset], ie, |
| 2124 | call * (4 x offset)(%ebp). |
| 2125 | */ |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2126 | void VG_(synth_call) ( Bool ensure_shortform, Int word_offset, |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2127 | Bool simd_flags, FlagSet use_flags, FlagSet set_flags ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2128 | { |
| 2129 | vg_assert(word_offset >= 0); |
| 2130 | vg_assert(word_offset < VG_BASEBLOCK_WORDS); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2131 | if (ensure_shortform) { |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2132 | vg_assert(word_offset < 32); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2133 | } |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2134 | emit_call_star_EBP_off ( simd_flags, 4 * word_offset, use_flags, set_flags ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2135 | } |
| 2136 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2137 | static void maybe_emit_movl_reg_reg ( UInt src, UInt dst ) |
njn | 6431be7 | 2002-07-28 09:53:34 +0000 | [diff] [blame] | 2138 | { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2139 | if (src != dst) { |
| 2140 | VG_(emit_movv_reg_reg) ( 4, src, dst ); |
| 2141 | ccall_arg_setup_instrs++; |
| 2142 | } |
njn | 6431be7 | 2002-07-28 09:53:34 +0000 | [diff] [blame] | 2143 | } |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2144 | |
| 2145 | /* 'maybe' because it is sometimes skipped eg. for "movl %eax,%eax" */ |
| 2146 | static void maybe_emit_movl_litOrReg_reg ( UInt litOrReg, Tag tag, UInt reg ) |
| 2147 | { |
| 2148 | if (RealReg == tag) { |
| 2149 | maybe_emit_movl_reg_reg ( litOrReg, reg ); |
| 2150 | } else if (Literal == tag) { |
| 2151 | VG_(emit_movv_lit_reg) ( 4, litOrReg, reg ); |
| 2152 | ccall_arg_setup_instrs++; |
| 2153 | } |
| 2154 | else |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 2155 | VG_(core_panic)("emit_movl_litOrReg_reg: unexpected tag"); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2156 | } |
| 2157 | |
| 2158 | static |
| 2159 | void emit_swapl_arg_regs ( UInt reg1, UInt reg2 ) |
| 2160 | { |
| 2161 | if (R_EAX == reg1) { |
| 2162 | VG_(emit_swapl_reg_EAX) ( reg2 ); |
| 2163 | } else if (R_EAX == reg2) { |
| 2164 | VG_(emit_swapl_reg_EAX) ( reg1 ); |
| 2165 | } else { |
| 2166 | emit_swapl_reg_reg ( reg1, reg2 ); |
| 2167 | } |
| 2168 | ccall_arg_setup_instrs++; |
| 2169 | } |
| 2170 | |
| 2171 | static |
| 2172 | void emit_two_regs_args_setup ( UInt src1, UInt src2, UInt dst1, UInt dst2) |
| 2173 | { |
| 2174 | if (dst1 != src2) { |
| 2175 | maybe_emit_movl_reg_reg ( src1, dst1 ); |
| 2176 | maybe_emit_movl_reg_reg ( src2, dst2 ); |
| 2177 | |
| 2178 | } else if (dst2 != src1) { |
| 2179 | maybe_emit_movl_reg_reg ( src2, dst2 ); |
| 2180 | maybe_emit_movl_reg_reg ( src1, dst1 ); |
| 2181 | |
| 2182 | } else { |
| 2183 | /* swap to break cycle */ |
| 2184 | emit_swapl_arg_regs ( dst1, dst2 ); |
| 2185 | } |
| 2186 | } |
| 2187 | |
| 2188 | static |
| 2189 | void emit_three_regs_args_setup ( UInt src1, UInt src2, UInt src3, |
| 2190 | UInt dst1, UInt dst2, UInt dst3) |
| 2191 | { |
| 2192 | if (dst1 != src2 && dst1 != src3) { |
| 2193 | maybe_emit_movl_reg_reg ( src1, dst1 ); |
| 2194 | emit_two_regs_args_setup ( src2, src3, dst2, dst3 ); |
| 2195 | |
| 2196 | } else if (dst2 != src1 && dst2 != src3) { |
| 2197 | maybe_emit_movl_reg_reg ( src2, dst2 ); |
| 2198 | emit_two_regs_args_setup ( src1, src3, dst1, dst3 ); |
| 2199 | |
| 2200 | } else if (dst3 != src1 && dst3 != src2) { |
| 2201 | maybe_emit_movl_reg_reg ( src3, dst3 ); |
| 2202 | emit_two_regs_args_setup ( src1, src2, dst1, dst2 ); |
| 2203 | |
| 2204 | } else { |
| 2205 | /* break cycle */ |
| 2206 | if (dst1 == src2 && dst2 == src3 && dst3 == src1) { |
| 2207 | emit_swapl_arg_regs ( dst1, dst2 ); |
| 2208 | emit_swapl_arg_regs ( dst1, dst3 ); |
| 2209 | |
| 2210 | } else if (dst1 == src3 && dst2 == src1 && dst3 == src2) { |
| 2211 | emit_swapl_arg_regs ( dst1, dst3 ); |
| 2212 | emit_swapl_arg_regs ( dst1, dst2 ); |
| 2213 | |
| 2214 | } else { |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 2215 | VG_(core_panic)("impossible 3-cycle"); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2216 | } |
| 2217 | } |
| 2218 | } |
| 2219 | |
| 2220 | static |
| 2221 | void emit_two_regs_or_lits_args_setup ( UInt argv[], Tag tagv[], |
| 2222 | UInt src1, UInt src2, |
| 2223 | UInt dst1, UInt dst2) |
| 2224 | { |
| 2225 | /* If either are lits, order doesn't matter */ |
| 2226 | if (Literal == tagv[src1] || Literal == tagv[src2]) { |
| 2227 | maybe_emit_movl_litOrReg_reg ( argv[src1], tagv[src1], dst1 ); |
| 2228 | maybe_emit_movl_litOrReg_reg ( argv[src2], tagv[src2], dst2 ); |
| 2229 | |
| 2230 | } else { |
| 2231 | emit_two_regs_args_setup ( argv[src1], argv[src2], dst1, dst2 ); |
| 2232 | } |
| 2233 | } |
| 2234 | |
| 2235 | static |
| 2236 | void emit_three_regs_or_lits_args_setup ( UInt argv[], Tag tagv[], |
| 2237 | UInt src1, UInt src2, UInt src3, |
| 2238 | UInt dst1, UInt dst2, UInt dst3) |
| 2239 | { |
| 2240 | // SSS: fix this eventually -- make STOREV use two RealRegs? |
| 2241 | /* Not supporting literals for 3-arg C functions -- they're only used |
| 2242 | by STOREV which has 2 args */ |
| 2243 | vg_assert(RealReg == tagv[src1] && |
| 2244 | RealReg == tagv[src2] && |
| 2245 | RealReg == tagv[src3]); |
| 2246 | emit_three_regs_args_setup ( argv[src1], argv[src2], argv[src3], |
| 2247 | dst1, dst2, dst3 ); |
| 2248 | } |
| 2249 | |
| 2250 | /* Synthesise a call to a C function `fn' (which must be registered in |
| 2251 | baseBlock) doing all the reg saving and arg handling work. |
| 2252 | |
| 2253 | WARNING: a UInstr should *not* be translated with synth_ccall followed |
| 2254 | by some other x86 assembly code; vg_liveness_analysis() doesn't expect |
| 2255 | such behaviour and everything will fall over. |
| 2256 | */ |
| 2257 | void VG_(synth_ccall) ( Addr fn, Int argc, Int regparms_n, UInt argv[], |
| 2258 | Tag tagv[], Int ret_reg, |
| 2259 | RRegSet regs_live_before, RRegSet regs_live_after ) |
| 2260 | { |
| 2261 | Int i; |
| 2262 | Int stack_used = 0; |
| 2263 | Bool preserve_eax, preserve_ecx, preserve_edx; |
| 2264 | |
| 2265 | vg_assert(0 <= regparms_n && regparms_n <= 3); |
| 2266 | |
| 2267 | ccalls++; |
| 2268 | |
| 2269 | /* If %e[acd]x is live before and after the C call, save/restore it. |
| 2270 | Unless the return values clobbers the reg; in this case we must not |
| 2271 | save/restore the reg, because the restore would clobber the return |
| 2272 | value. (Before and after the UInstr really constitute separate live |
| 2273 | ranges, but you miss this if you don't consider what happens during |
| 2274 | the UInstr.) */ |
| 2275 | # define PRESERVE_REG(realReg) \ |
njn | 4ba5a79 | 2002-09-30 10:23:54 +0000 | [diff] [blame] | 2276 | (IS_RREG_LIVE(VG_(realreg_to_rank)(realReg), regs_live_before) && \ |
| 2277 | IS_RREG_LIVE(VG_(realreg_to_rank)(realReg), regs_live_after) && \ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2278 | ret_reg != realReg) |
| 2279 | |
| 2280 | preserve_eax = PRESERVE_REG(R_EAX); |
| 2281 | preserve_ecx = PRESERVE_REG(R_ECX); |
| 2282 | preserve_edx = PRESERVE_REG(R_EDX); |
| 2283 | |
| 2284 | # undef PRESERVE_REG |
| 2285 | |
| 2286 | /* Save caller-save regs as required */ |
| 2287 | if (preserve_eax) { VG_(emit_pushv_reg) ( 4, R_EAX ); ccall_reg_saves++; } |
| 2288 | if (preserve_ecx) { VG_(emit_pushv_reg) ( 4, R_ECX ); ccall_reg_saves++; } |
| 2289 | if (preserve_edx) { VG_(emit_pushv_reg) ( 4, R_EDX ); ccall_reg_saves++; } |
| 2290 | |
| 2291 | /* Args are passed in two groups: (a) via stack (b) via regs. regparms_n |
| 2292 | is the number of args passed in regs (maximum 3 for GCC on x86). */ |
| 2293 | |
| 2294 | ccall_args += argc; |
njn | 6431be7 | 2002-07-28 09:53:34 +0000 | [diff] [blame] | 2295 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2296 | /* First push stack args (RealRegs or Literals) in reverse order. */ |
| 2297 | for (i = argc-1; i >= regparms_n; i--) { |
| 2298 | switch (tagv[i]) { |
| 2299 | case RealReg: |
| 2300 | VG_(emit_pushv_reg) ( 4, argv[i] ); |
| 2301 | break; |
| 2302 | case Literal: |
| 2303 | /* Use short form of pushl if possible. */ |
| 2304 | if (argv[i] == VG_(extend_s_8to32) ( argv[i] )) |
| 2305 | VG_(emit_pushl_lit8) ( VG_(extend_s_8to32)(argv[i]) ); |
| 2306 | else |
| 2307 | VG_(emit_pushl_lit32)( argv[i] ); |
| 2308 | break; |
| 2309 | default: |
| 2310 | VG_(printf)("tag=%d\n", tagv[i]); |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 2311 | VG_(core_panic)("VG_(synth_ccall): bad tag"); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2312 | } |
| 2313 | stack_used += 4; |
| 2314 | ccall_arg_setup_instrs++; |
| 2315 | } |
njn | 6431be7 | 2002-07-28 09:53:34 +0000 | [diff] [blame] | 2316 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2317 | /* Then setup args in registers (arg[123] --> %e[adc]x; note order!). |
| 2318 | If moving values between registers, be careful not to clobber any on |
| 2319 | the way. Happily we can use xchgl to swap registers. |
| 2320 | */ |
| 2321 | switch (regparms_n) { |
njn | 6431be7 | 2002-07-28 09:53:34 +0000 | [diff] [blame] | 2322 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2323 | /* Trickiest. Args passed in %eax, %edx, and %ecx. */ |
| 2324 | case 3: |
| 2325 | emit_three_regs_or_lits_args_setup ( argv, tagv, 0, 1, 2, |
| 2326 | R_EAX, R_EDX, R_ECX ); |
| 2327 | break; |
njn | 6431be7 | 2002-07-28 09:53:34 +0000 | [diff] [blame] | 2328 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2329 | /* Less-tricky. Args passed in %eax and %edx. */ |
| 2330 | case 2: |
| 2331 | emit_two_regs_or_lits_args_setup ( argv, tagv, 0, 1, R_EAX, R_EDX ); |
| 2332 | break; |
| 2333 | |
| 2334 | /* Easy. Just move arg1 into %eax (if not already in there). */ |
| 2335 | case 1: |
| 2336 | maybe_emit_movl_litOrReg_reg ( argv[0], tagv[0], R_EAX ); |
| 2337 | break; |
| 2338 | |
| 2339 | case 0: |
| 2340 | break; |
| 2341 | |
| 2342 | default: |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 2343 | VG_(core_panic)("VG_(synth_call): regparms_n value not in range 0..3"); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2344 | } |
| 2345 | |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2346 | /* Call the function - may trash all flags */ |
| 2347 | VG_(synth_call) ( False, VG_(helper_offset) ( fn ), False, FlagsEmpty, FlagsOSZACP ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2348 | |
| 2349 | /* Clear any args from stack */ |
| 2350 | if (0 != stack_used) { |
| 2351 | VG_(emit_add_lit_to_esp) ( stack_used ); |
| 2352 | ccall_stack_clears++; |
| 2353 | } |
| 2354 | |
| 2355 | /* Move return value into ret_reg if necessary and not already there */ |
| 2356 | if (INVALID_REALREG != ret_reg) { |
| 2357 | ccall_retvals++; |
| 2358 | if (R_EAX != ret_reg) { |
| 2359 | VG_(emit_movv_reg_reg) ( 4, R_EAX, ret_reg ); |
| 2360 | ccall_retval_movs++; |
| 2361 | } |
| 2362 | } |
| 2363 | |
| 2364 | /* Restore live caller-save regs as required */ |
| 2365 | if (preserve_edx) VG_(emit_popv_reg) ( 4, R_EDX ); |
| 2366 | if (preserve_ecx) VG_(emit_popv_reg) ( 4, R_ECX ); |
| 2367 | if (preserve_eax) VG_(emit_popv_reg) ( 4, R_EAX ); |
njn | 6431be7 | 2002-07-28 09:53:34 +0000 | [diff] [blame] | 2368 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2369 | |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 2370 | static void load_ebp_from_JmpKind ( JmpKind jmpkind ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2371 | { |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 2372 | switch (jmpkind) { |
| 2373 | case JmpBoring: |
| 2374 | break; |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 2375 | case JmpRet: |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2376 | break; |
| 2377 | case JmpCall: |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 2378 | break; |
| 2379 | case JmpSyscall: |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2380 | VG_(emit_movv_lit_reg) ( 4, VG_TRC_EBP_JMP_SYSCALL, R_EBP ); |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 2381 | break; |
| 2382 | case JmpClientReq: |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2383 | VG_(emit_movv_lit_reg) ( 4, VG_TRC_EBP_JMP_CLIENTREQ, R_EBP ); |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 2384 | break; |
| 2385 | default: |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 2386 | VG_(core_panic)("load_ebp_from_JmpKind"); |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 2387 | } |
| 2388 | } |
| 2389 | |
| 2390 | /* Jump to the next translation, by loading its original addr into |
| 2391 | %eax and returning to the scheduler. Signal special requirements |
| 2392 | by loading a special value into %ebp first. |
| 2393 | */ |
| 2394 | static void synth_jmp_reg ( Int reg, JmpKind jmpkind ) |
| 2395 | { |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2396 | maybe_emit_put_eflags(); /* save flags here */ |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 2397 | load_ebp_from_JmpKind ( jmpkind ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2398 | if (reg != R_EAX) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2399 | VG_(emit_movv_reg_reg) ( 4, reg, R_EAX ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2400 | emit_ret(); |
| 2401 | } |
| 2402 | |
sewardj | 22854b9 | 2002-11-30 14:00:47 +0000 | [diff] [blame] | 2403 | static void synth_mov_reg_offregmem ( Int size, Int reg, Int off, Int areg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2404 | |
| 2405 | /* Same deal as synth_jmp_reg. */ |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 2406 | static void synth_jmp_lit ( Addr addr, JmpKind jmpkind ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2407 | { |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2408 | maybe_emit_put_eflags(); /* save flags here */ |
| 2409 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2410 | VG_(emit_movv_lit_reg) ( 4, addr, R_EAX ); |
sewardj | 22854b9 | 2002-11-30 14:00:47 +0000 | [diff] [blame] | 2411 | |
| 2412 | if (VG_(clo_chain_bb) && (jmpkind == JmpBoring || jmpkind == JmpCall)) { |
| 2413 | synth_mov_reg_offregmem(4, R_EAX, 4*VGOFF_(m_eip), R_EBP); /* update EIP */ |
| 2414 | emit_call_patchme(); |
| 2415 | } else { |
| 2416 | load_ebp_from_JmpKind ( jmpkind ); |
| 2417 | emit_ret(); |
| 2418 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2419 | } |
| 2420 | |
| 2421 | |
sewardj | 2370f3b | 2002-11-30 15:01:01 +0000 | [diff] [blame] | 2422 | static void synth_mov_offregmem_reg ( Int size, Int off, Int areg, Int reg ); |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2423 | static void synth_nonshiftop_lit_reg ( Bool simd_flags, |
sewardj | 2370f3b | 2002-11-30 15:01:01 +0000 | [diff] [blame] | 2424 | Opcode opcode, Int size, |
| 2425 | UInt lit, Int reg ); |
| 2426 | |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2427 | static void synth_jcond_lit ( Condcode cond, |
| 2428 | Addr addr, |
| 2429 | Bool eax_trashable ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2430 | { |
sewardj | 2370f3b | 2002-11-30 15:01:01 +0000 | [diff] [blame] | 2431 | UInt mask; |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2432 | Bool simd; |
sewardj | bb6c118 | 2002-12-12 23:54:47 +0000 | [diff] [blame] | 2433 | Int tgt, tgt2, tgt_jump; |
sewardj | 2370f3b | 2002-11-30 15:01:01 +0000 | [diff] [blame] | 2434 | |
sewardj | a2113f9 | 2002-12-12 23:42:48 +0000 | [diff] [blame] | 2435 | VG_(init_target)(&tgt); |
sewardj | bb6c118 | 2002-12-12 23:54:47 +0000 | [diff] [blame] | 2436 | VG_(init_target)(&tgt2); |
| 2437 | VG_(init_target)(&tgt_jump); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2438 | |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2439 | /* Ensure simulated %EFLAGS are up-to-date, by copying back %eflags |
| 2440 | if need be */ |
| 2441 | maybe_emit_put_eflags(); |
| 2442 | vg_assert(eflags_state == UPD_Both || eflags_state == UPD_Simd); |
| 2443 | |
| 2444 | if (eflags_state == UPD_Both) { |
| 2445 | /* The flags are already set up, so we just use them as is. */ |
| 2446 | simd = True; |
sewardj | 2370f3b | 2002-11-30 15:01:01 +0000 | [diff] [blame] | 2447 | cond = invertCondition(cond); |
| 2448 | } else { |
sewardj | 75f0493 | 2002-12-12 23:13:21 +0000 | [diff] [blame] | 2449 | Bool parity = False; /* test Z or P */ |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2450 | |
| 2451 | /* The simd state contains the most recent version, so we emit a |
| 2452 | sequence to calculate the relevant condition directly out of |
| 2453 | the simd flags. This is much cheaper (on P3/P4/Athlon) than |
| 2454 | copying them back to the real flags via popf. Notice that |
| 2455 | some of these sequences trash %eax, but that should be free |
| 2456 | now since this is the end of a bb and therefore all regs are |
| 2457 | dead. */ |
| 2458 | simd = False; |
| 2459 | |
| 2460 | switch (cond) { |
| 2461 | |
sewardj | bb6c118 | 2002-12-12 23:54:47 +0000 | [diff] [blame] | 2462 | case CondLE: /* Z || S != O -> S || !P */ |
| 2463 | case CondNLE: /* !Z && S == O -> !S && P */ |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2464 | vg_assert(eax_trashable); |
| 2465 | |
| 2466 | VG_(emit_movv_offregmem_reg) |
| 2467 | ( 4, VGOFF_(m_eflags) * 4, R_EBP, R_EAX ); |
| 2468 | /* eax == %EFLAGS */ |
| 2469 | |
sewardj | bb6c118 | 2002-12-12 23:54:47 +0000 | [diff] [blame] | 2470 | VG_(emit_nonshiftopv_lit_reg) |
| 2471 | ( False, 4, AND, EFlagO|EFlagS|EFlagZ, R_EAX ); |
| 2472 | /* eax just contains OF, SF and ZF */ |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2473 | |
sewardj | bb6c118 | 2002-12-12 23:54:47 +0000 | [diff] [blame] | 2474 | VG_(emit_shiftopv_lit_reg)( False, 4, ROR, 7, R_EAX ); |
| 2475 | /* eax has OF and SF in lower 8 bits, and ZF in MSB */ |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2476 | |
sewardj | 0973662 | 2002-12-28 00:19:00 +0000 | [diff] [blame] | 2477 | /* actually set the real cpu flags, since ROR changes |
| 2478 | neither P nor Z */ |
| 2479 | VG_(emit_nonshiftopv_reg_reg)( False, 4, OR, R_EAX, R_EAX ); |
| 2480 | |
sewardj | bb6c118 | 2002-12-12 23:54:47 +0000 | [diff] [blame] | 2481 | if (cond == CondLE) { |
| 2482 | /* test Z */ |
| 2483 | VG_(emit_jcondshort_target)(False, CondS, &tgt_jump); |
| 2484 | /* test OF != SF */ |
| 2485 | cond = CondP; |
| 2486 | } else { |
| 2487 | /* test Z */ |
| 2488 | VG_(emit_jcondshort_target)(False, CondS, &tgt2); |
| 2489 | /* test OF == SF */ |
| 2490 | cond = CondNP; |
| 2491 | } |
sewardj | 2370f3b | 2002-11-30 15:01:01 +0000 | [diff] [blame] | 2492 | break; |
| 2493 | |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2494 | case CondL: |
| 2495 | case CondNL: |
sewardj | ac3414b | 2002-12-10 23:44:17 +0000 | [diff] [blame] | 2496 | vg_assert(eax_trashable); |
| 2497 | |
| 2498 | VG_(emit_movv_offregmem_reg) |
| 2499 | ( 4, VGOFF_(m_eflags) * 4, R_EBP, R_EAX ); |
| 2500 | /* eax == %EFLAGS */ |
| 2501 | |
sewardj | 75f0493 | 2002-12-12 23:13:21 +0000 | [diff] [blame] | 2502 | VG_(emit_shiftopv_lit_reg)( False, 4, SHR, 7, R_EAX ); |
| 2503 | /* eax has OF and SF in lower byte */ |
sewardj | ac3414b | 2002-12-10 23:44:17 +0000 | [diff] [blame] | 2504 | |
sewardj | 75f0493 | 2002-12-12 23:13:21 +0000 | [diff] [blame] | 2505 | VG_(emit_testb_lit_reg) ( False, 0x11, R_EAX); |
| 2506 | /* PF = OF == SF */ |
sewardj | ac3414b | 2002-12-10 23:44:17 +0000 | [diff] [blame] | 2507 | |
sewardj | 0973662 | 2002-12-28 00:19:00 +0000 | [diff] [blame] | 2508 | /* Testing P now is OK since SHR sets it */ |
sewardj | 75f0493 | 2002-12-12 23:13:21 +0000 | [diff] [blame] | 2509 | if (cond == CondL) cond = CondP; else cond = CondNP; |
| 2510 | break; |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2511 | |
| 2512 | case CondB: |
| 2513 | case CondNB: |
| 2514 | mask = EFlagC; goto simple; /* C=1 */ |
| 2515 | |
| 2516 | case CondZ: |
| 2517 | case CondNZ: |
| 2518 | mask = EFlagZ; goto simple; /* Z=1 */ |
| 2519 | |
| 2520 | case CondBE: |
| 2521 | case CondNBE: |
| 2522 | mask = EFlagC | EFlagZ; goto simple; /* C=1 || Z=1 */ |
| 2523 | |
| 2524 | case CondS: |
| 2525 | case CondNS: |
| 2526 | mask = EFlagS; goto simple; /* S=1 */ |
| 2527 | |
| 2528 | case CondP: |
sewardj | 06d3f8c | 2002-12-08 19:50:36 +0000 | [diff] [blame] | 2529 | case CondNP: |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2530 | mask = EFlagP; goto simple; /* P=1 */ |
| 2531 | |
sewardj | 3954207 | 2002-12-09 22:44:00 +0000 | [diff] [blame] | 2532 | case CondO: |
| 2533 | case CondNO: |
| 2534 | mask = EFlagO; goto simple; /* O=1 */ |
| 2535 | |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2536 | default: |
| 2537 | VG_(printf)("synth_jcond_lit: unhandled simd case %d (%s)\n", |
njn | 563f96f | 2003-02-03 11:17:46 +0000 | [diff] [blame] | 2538 | (Int)cond, VG_(name_UCondcode)(cond) ); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2539 | VG_(core_panic)("synth_jcond_lit: unhandled simd case"); |
| 2540 | |
| 2541 | simple: |
| 2542 | VG_(new_emit)(False, False, FlagsOSZACP); |
sewardj | 2370f3b | 2002-11-30 15:01:01 +0000 | [diff] [blame] | 2543 | if ((mask & 0xff) == mask) { |
| 2544 | VG_(emitB) ( 0xF6 ); /* Grp3 */ |
| 2545 | VG_(emit_amode_offregmem_reg)( |
| 2546 | VGOFF_(m_eflags) * 4, R_EBP, 0 /* subcode for TEST */); |
| 2547 | VG_(emitB) (mask); |
| 2548 | if (dis) |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2549 | VG_(printf)("\n\t\ttestb $0x%x, %d(%%ebp)\n", |
sewardj | 2370f3b | 2002-11-30 15:01:01 +0000 | [diff] [blame] | 2550 | mask, VGOFF_(m_eflags) * 4); |
| 2551 | } else { |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2552 | /* all cond codes are in lower 16 bits */ |
| 2553 | vg_assert((mask & 0xffff) == mask); |
| 2554 | |
| 2555 | VG_(emitB) ( 0x66 ); |
sewardj | 2370f3b | 2002-11-30 15:01:01 +0000 | [diff] [blame] | 2556 | VG_(emitB) ( 0xF7 ); |
| 2557 | VG_(emit_amode_offregmem_reg)( |
| 2558 | VGOFF_(m_eflags) * 4, R_EBP, 0 /* subcode for TEST */); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2559 | VG_(emitW) (mask); |
sewardj | 2370f3b | 2002-11-30 15:01:01 +0000 | [diff] [blame] | 2560 | if (dis) |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2561 | VG_(printf)("\n\t\ttestl $0x%x, %d(%%ebp)\n", |
sewardj | 2370f3b | 2002-11-30 15:01:01 +0000 | [diff] [blame] | 2562 | mask, VGOFF_(m_eflags) * 4); |
| 2563 | } |
| 2564 | |
sewardj | 75f0493 | 2002-12-12 23:13:21 +0000 | [diff] [blame] | 2565 | cond = (parity ? CondP : CondZ) | (cond & 1); |
sewardj | 2370f3b | 2002-11-30 15:01:01 +0000 | [diff] [blame] | 2566 | break; |
| 2567 | } |
| 2568 | } |
| 2569 | |
sewardj | a2113f9 | 2002-12-12 23:42:48 +0000 | [diff] [blame] | 2570 | VG_(emit_jcondshort_target) ( simd, cond, &tgt ); |
sewardj | bb6c118 | 2002-12-12 23:54:47 +0000 | [diff] [blame] | 2571 | |
| 2572 | VG_(target_forward)(&tgt_jump); |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 2573 | synth_jmp_lit ( addr, JmpBoring ); |
sewardj | a2113f9 | 2002-12-12 23:42:48 +0000 | [diff] [blame] | 2574 | |
| 2575 | VG_(target_forward)(&tgt); |
sewardj | bb6c118 | 2002-12-12 23:54:47 +0000 | [diff] [blame] | 2576 | VG_(target_forward)(&tgt2); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2577 | } |
| 2578 | |
| 2579 | |
sewardj | 2370f3b | 2002-11-30 15:01:01 +0000 | [diff] [blame] | 2580 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2581 | static void synth_jmp_ifzero_reg_lit ( Int reg, Addr addr ) |
| 2582 | { |
sewardj | a2113f9 | 2002-12-12 23:42:48 +0000 | [diff] [blame] | 2583 | Int tgt; |
| 2584 | |
| 2585 | VG_(init_target)(&tgt); |
| 2586 | |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2587 | VG_(emit_cmpl_zero_reg) ( False, reg ); |
sewardj | a2113f9 | 2002-12-12 23:42:48 +0000 | [diff] [blame] | 2588 | |
| 2589 | VG_(emit_jcondshort_target) ( False, CondNZ, &tgt ); |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 2590 | synth_jmp_lit ( addr, JmpBoring ); |
sewardj | a2113f9 | 2002-12-12 23:42:48 +0000 | [diff] [blame] | 2591 | |
| 2592 | VG_(target_forward)(&tgt); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2593 | } |
| 2594 | |
| 2595 | |
| 2596 | static void synth_mov_lit_reg ( Int size, UInt lit, Int reg ) |
| 2597 | { |
| 2598 | /* Load the zero-extended literal into reg, at size l, |
| 2599 | regardless of the request size. */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2600 | VG_(emit_movv_lit_reg) ( 4, lit, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2601 | } |
| 2602 | |
| 2603 | |
| 2604 | static void synth_mov_regmem_reg ( Int size, Int reg1, Int reg2 ) |
| 2605 | { |
| 2606 | switch (size) { |
| 2607 | case 4: emit_movv_regmem_reg ( 4, reg1, reg2 ); break; |
| 2608 | case 2: emit_movzwl_regmem_reg ( reg1, reg2 ); break; |
| 2609 | case 1: emit_movzbl_regmem_reg ( reg1, reg2 ); break; |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 2610 | default: VG_(core_panic)("synth_mov_regmem_reg"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2611 | } |
| 2612 | } |
| 2613 | |
| 2614 | |
| 2615 | static void synth_mov_offregmem_reg ( Int size, Int off, Int areg, Int reg ) |
| 2616 | { |
| 2617 | switch (size) { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2618 | case 4: VG_(emit_movv_offregmem_reg) ( 4, off, areg, reg ); break; |
| 2619 | case 2: VG_(emit_movzwl_offregmem_reg) ( off, areg, reg ); break; |
| 2620 | case 1: VG_(emit_movzbl_offregmem_reg) ( off, areg, reg ); break; |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 2621 | default: VG_(core_panic)("synth_mov_offregmem_reg"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2622 | } |
| 2623 | } |
| 2624 | |
| 2625 | |
| 2626 | static void synth_mov_reg_offregmem ( Int size, Int reg, |
| 2627 | Int off, Int areg ) |
| 2628 | { |
| 2629 | switch (size) { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2630 | case 4: VG_(emit_movv_reg_offregmem) ( 4, reg, off, areg ); break; |
| 2631 | case 2: VG_(emit_movv_reg_offregmem) ( 2, reg, off, areg ); break; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2632 | case 1: if (reg < 4) { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2633 | VG_(emit_movb_reg_offregmem) ( reg, off, areg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2634 | } |
| 2635 | else { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2636 | VG_(emit_swapl_reg_EAX) ( reg ); |
| 2637 | VG_(emit_movb_reg_offregmem) ( R_AL, off, areg ); |
| 2638 | VG_(emit_swapl_reg_EAX) ( reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2639 | } |
| 2640 | break; |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 2641 | default: VG_(core_panic)("synth_mov_reg_offregmem"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2642 | } |
| 2643 | } |
| 2644 | |
| 2645 | |
| 2646 | static void synth_mov_reg_memreg ( Int size, Int reg1, Int reg2 ) |
| 2647 | { |
| 2648 | Int s1; |
| 2649 | switch (size) { |
| 2650 | case 4: emit_movv_reg_regmem ( 4, reg1, reg2 ); break; |
| 2651 | case 2: emit_movv_reg_regmem ( 2, reg1, reg2 ); break; |
| 2652 | case 1: if (reg1 < 4) { |
| 2653 | emit_movb_reg_regmem ( reg1, reg2 ); |
| 2654 | } |
| 2655 | else { |
| 2656 | /* Choose a swap reg which is < 4 and not reg1 or reg2. */ |
| 2657 | for (s1 = 0; s1 == reg1 || s1 == reg2; s1++) ; |
| 2658 | emit_swapl_reg_reg ( s1, reg1 ); |
| 2659 | emit_movb_reg_regmem ( s1, reg2 ); |
| 2660 | emit_swapl_reg_reg ( s1, reg1 ); |
| 2661 | } |
| 2662 | break; |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 2663 | default: VG_(core_panic)("synth_mov_reg_litmem"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2664 | } |
| 2665 | } |
| 2666 | |
| 2667 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2668 | static void synth_unaryop_reg ( Bool simd_flags, |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2669 | Opcode opcode, Int size, |
| 2670 | Int reg ) |
| 2671 | { |
| 2672 | /* NB! opcode is a uinstr opcode, not an x86 one! */ |
| 2673 | switch (size) { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2674 | case 4: VG_(emit_unaryopv_reg) ( simd_flags, 4, opcode, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2675 | break; |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2676 | case 2: VG_(emit_unaryopv_reg) ( simd_flags, 2, opcode, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2677 | break; |
| 2678 | case 1: if (reg < 4) { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2679 | VG_(emit_unaryopb_reg) ( simd_flags, opcode, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2680 | } else { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2681 | VG_(emit_swapl_reg_EAX) ( reg ); |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2682 | VG_(emit_unaryopb_reg) ( simd_flags, opcode, R_AL ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2683 | VG_(emit_swapl_reg_EAX) ( reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2684 | } |
| 2685 | break; |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 2686 | default: VG_(core_panic)("synth_unaryop_reg"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2687 | } |
| 2688 | } |
| 2689 | |
| 2690 | |
| 2691 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2692 | static void synth_nonshiftop_reg_reg ( Bool simd_flags, |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2693 | Opcode opcode, Int size, |
| 2694 | Int reg1, Int reg2 ) |
| 2695 | { |
| 2696 | /* NB! opcode is a uinstr opcode, not an x86 one! */ |
| 2697 | switch (size) { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2698 | case 4: VG_(emit_nonshiftopv_reg_reg) ( simd_flags, 4, opcode, reg1, reg2 ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2699 | break; |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2700 | case 2: VG_(emit_nonshiftopv_reg_reg) ( simd_flags, 2, opcode, reg1, reg2 ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2701 | break; |
| 2702 | case 1: { /* Horrible ... */ |
| 2703 | Int s1, s2; |
| 2704 | /* Choose s1 and s2 to be x86 regs which we can talk about the |
| 2705 | lowest 8 bits, ie either %eax, %ebx, %ecx or %edx. Make |
| 2706 | sure s1 != s2 and that neither of them equal either reg1 or |
| 2707 | reg2. Then use them as temporaries to make things work. */ |
| 2708 | if (reg1 < 4 && reg2 < 4) { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2709 | emit_nonshiftopb_reg_reg(simd_flags, opcode, reg1, reg2); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2710 | break; |
| 2711 | } |
| 2712 | for (s1 = 0; s1 == reg1 || s1 == reg2; s1++) ; |
| 2713 | if (reg1 >= 4 && reg2 < 4) { |
| 2714 | emit_swapl_reg_reg ( reg1, s1 ); |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2715 | emit_nonshiftopb_reg_reg(simd_flags, opcode, s1, reg2); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2716 | emit_swapl_reg_reg ( reg1, s1 ); |
| 2717 | break; |
| 2718 | } |
| 2719 | for (s2 = 0; s2 == reg1 || s2 == reg2 || s2 == s1; s2++) ; |
| 2720 | if (reg1 < 4 && reg2 >= 4) { |
| 2721 | emit_swapl_reg_reg ( reg2, s2 ); |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2722 | emit_nonshiftopb_reg_reg(simd_flags, opcode, reg1, s2); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2723 | emit_swapl_reg_reg ( reg2, s2 ); |
| 2724 | break; |
| 2725 | } |
| 2726 | if (reg1 >= 4 && reg2 >= 4 && reg1 != reg2) { |
| 2727 | emit_swapl_reg_reg ( reg1, s1 ); |
| 2728 | emit_swapl_reg_reg ( reg2, s2 ); |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2729 | emit_nonshiftopb_reg_reg(simd_flags, opcode, s1, s2); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2730 | emit_swapl_reg_reg ( reg1, s1 ); |
| 2731 | emit_swapl_reg_reg ( reg2, s2 ); |
| 2732 | break; |
| 2733 | } |
| 2734 | if (reg1 >= 4 && reg2 >= 4 && reg1 == reg2) { |
| 2735 | emit_swapl_reg_reg ( reg1, s1 ); |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2736 | emit_nonshiftopb_reg_reg(simd_flags, opcode, s1, s1); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2737 | emit_swapl_reg_reg ( reg1, s1 ); |
| 2738 | break; |
| 2739 | } |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 2740 | VG_(core_panic)("synth_nonshiftopb_reg_reg"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2741 | } |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 2742 | default: VG_(core_panic)("synth_nonshiftop_reg_reg"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2743 | } |
| 2744 | } |
| 2745 | |
sewardj | a2c5a73 | 2002-12-15 03:10:42 +0000 | [diff] [blame] | 2746 | #if 0 |
| 2747 | /* evidently unused */ |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2748 | static void synth_nonshiftop_reg_offregmem ( |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2749 | Bool simd_flags, |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2750 | Opcode opcode, Int size, |
| 2751 | Int off, Int areg, Int reg ) |
| 2752 | { |
| 2753 | switch (size) { |
| 2754 | case 4: |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2755 | emit_nonshiftopv_reg_offregmem ( simd_flags, 4, opcode, off, areg, reg ); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2756 | break; |
| 2757 | case 2: |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2758 | emit_nonshiftopv_reg_offregmem ( simd_flags, 2, opcode, off, areg, reg ); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2759 | break; |
| 2760 | case 1: |
| 2761 | if (reg < 4) { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2762 | emit_nonshiftopb_reg_offregmem ( simd_flags, opcode, off, areg, reg ); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2763 | } else { |
| 2764 | VG_(emit_swapl_reg_EAX) ( reg ); |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2765 | emit_nonshiftopb_reg_offregmem ( simd_flags, opcode, off, areg, R_AL ); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2766 | VG_(emit_swapl_reg_EAX) ( reg ); |
| 2767 | } |
| 2768 | break; |
| 2769 | default: |
| 2770 | VG_(core_panic)("synth_nonshiftop_reg_offregmem"); |
| 2771 | } |
| 2772 | } |
sewardj | a2c5a73 | 2002-12-15 03:10:42 +0000 | [diff] [blame] | 2773 | #endif |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2774 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2775 | static void synth_nonshiftop_offregmem_reg ( |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2776 | Bool simd_flags, |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2777 | Opcode opcode, Int size, |
| 2778 | Int off, Int areg, Int reg ) |
| 2779 | { |
| 2780 | switch (size) { |
| 2781 | case 4: |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2782 | emit_nonshiftopv_offregmem_reg ( simd_flags, 4, opcode, off, areg, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2783 | break; |
| 2784 | case 2: |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2785 | emit_nonshiftopv_offregmem_reg ( simd_flags, 2, opcode, off, areg, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2786 | break; |
| 2787 | case 1: |
| 2788 | if (reg < 4) { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2789 | emit_nonshiftopb_offregmem_reg ( simd_flags, opcode, off, areg, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2790 | } else { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2791 | VG_(emit_swapl_reg_EAX) ( reg ); |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2792 | emit_nonshiftopb_offregmem_reg ( simd_flags, opcode, off, areg, R_AL ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2793 | VG_(emit_swapl_reg_EAX) ( reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2794 | } |
| 2795 | break; |
| 2796 | default: |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 2797 | VG_(core_panic)("synth_nonshiftop_offregmem_reg"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2798 | } |
| 2799 | } |
| 2800 | |
| 2801 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2802 | static void synth_nonshiftop_lit_reg ( Bool simd_flags, |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2803 | Opcode opcode, Int size, |
| 2804 | UInt lit, Int reg ) |
| 2805 | { |
| 2806 | switch (size) { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2807 | case 4: VG_(emit_nonshiftopv_lit_reg) ( simd_flags, 4, opcode, lit, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2808 | break; |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2809 | case 2: VG_(emit_nonshiftopv_lit_reg) ( simd_flags, 2, opcode, lit, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2810 | break; |
| 2811 | case 1: if (reg < 4) { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2812 | emit_nonshiftopb_lit_reg ( simd_flags, opcode, lit, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2813 | } else { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2814 | VG_(emit_swapl_reg_EAX) ( reg ); |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2815 | emit_nonshiftopb_lit_reg ( simd_flags, opcode, lit, R_AL ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2816 | VG_(emit_swapl_reg_EAX) ( reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2817 | } |
| 2818 | break; |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 2819 | default: VG_(core_panic)("synth_nonshiftop_lit_reg"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2820 | } |
| 2821 | } |
| 2822 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2823 | static void synth_nonshiftop_lit_offregmem ( Bool simd_flags, |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2824 | Opcode opcode, Int size, |
| 2825 | UInt lit, Int off, Int regmem ) |
| 2826 | { |
| 2827 | switch (size) { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2828 | case 4: VG_(emit_nonshiftopv_lit_offregmem) ( simd_flags, 4, opcode, lit, off, regmem ); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2829 | break; |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2830 | case 2: VG_(emit_nonshiftopv_lit_offregmem) ( simd_flags, 2, opcode, lit, off, regmem ); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2831 | break; |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2832 | case 1: emit_nonshiftopb_lit_offregmem ( simd_flags, opcode, lit, off, regmem ); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2833 | break; |
| 2834 | default: VG_(core_panic)("synth_nonshiftop_lit_offregmem"); |
| 2835 | } |
| 2836 | } |
| 2837 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2838 | |
| 2839 | static void synth_push_reg ( Int size, Int reg ) |
| 2840 | { |
| 2841 | switch (size) { |
| 2842 | case 4: |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2843 | VG_(emit_pushv_reg) ( 4, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2844 | break; |
| 2845 | case 2: |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2846 | VG_(emit_pushv_reg) ( 2, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2847 | break; |
| 2848 | /* Pray that we don't have to generate this really cruddy bit of |
| 2849 | code very often. Could do better, but can I be bothered? */ |
| 2850 | case 1: |
| 2851 | vg_assert(reg != R_ESP); /* duh */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2852 | VG_(emit_add_lit_to_esp)(-1); |
| 2853 | if (reg != R_EAX) VG_(emit_swapl_reg_EAX) ( reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2854 | emit_movb_AL_zeroESPmem(); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2855 | if (reg != R_EAX) VG_(emit_swapl_reg_EAX) ( reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2856 | break; |
| 2857 | default: |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 2858 | VG_(core_panic)("synth_push_reg"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2859 | } |
| 2860 | } |
| 2861 | |
| 2862 | |
| 2863 | static void synth_pop_reg ( Int size, Int reg ) |
| 2864 | { |
| 2865 | switch (size) { |
| 2866 | case 4: |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2867 | VG_(emit_popv_reg) ( 4, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2868 | break; |
| 2869 | case 2: |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2870 | VG_(emit_popv_reg) ( 2, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2871 | break; |
| 2872 | case 1: |
| 2873 | /* Same comment as above applies. */ |
| 2874 | vg_assert(reg != R_ESP); /* duh */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2875 | if (reg != R_EAX) VG_(emit_swapl_reg_EAX) ( reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2876 | emit_movb_zeroESPmem_AL(); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2877 | if (reg != R_EAX) VG_(emit_swapl_reg_EAX) ( reg ); |
| 2878 | VG_(emit_add_lit_to_esp)(1); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2879 | break; |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 2880 | default: VG_(core_panic)("synth_pop_reg"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2881 | } |
| 2882 | } |
| 2883 | |
| 2884 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2885 | static void synth_shiftop_reg_reg ( Bool simd_flags, |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2886 | Opcode opcode, Int size, |
| 2887 | Int regs, Int regd ) |
| 2888 | { |
| 2889 | synth_push_reg ( size, regd ); |
| 2890 | if (regs != R_ECX) emit_swapl_reg_ECX ( regs ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2891 | switch (size) { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2892 | case 4: emit_shiftopv_cl_stack0 ( simd_flags, 4, opcode ); break; |
| 2893 | case 2: emit_shiftopv_cl_stack0 ( simd_flags, 2, opcode ); break; |
| 2894 | case 1: emit_shiftopb_cl_stack0 ( simd_flags, opcode ); break; |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 2895 | default: VG_(core_panic)("synth_shiftop_reg_reg"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2896 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2897 | if (regs != R_ECX) emit_swapl_reg_ECX ( regs ); |
| 2898 | synth_pop_reg ( size, regd ); |
| 2899 | } |
| 2900 | |
| 2901 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2902 | static void synth_shiftop_lit_reg ( Bool simd_flags, |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2903 | Opcode opcode, Int size, |
| 2904 | UInt lit, Int reg ) |
| 2905 | { |
| 2906 | switch (size) { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2907 | case 4: VG_(emit_shiftopv_lit_reg) ( simd_flags, 4, opcode, lit, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2908 | break; |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2909 | case 2: VG_(emit_shiftopv_lit_reg) ( simd_flags, 2, opcode, lit, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2910 | break; |
| 2911 | case 1: if (reg < 4) { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2912 | emit_shiftopb_lit_reg ( simd_flags, opcode, lit, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2913 | } else { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2914 | VG_(emit_swapl_reg_EAX) ( reg ); |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2915 | emit_shiftopb_lit_reg ( simd_flags, opcode, lit, R_AL ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2916 | VG_(emit_swapl_reg_EAX) ( reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2917 | } |
| 2918 | break; |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 2919 | default: VG_(core_panic)("synth_shiftop_lit_reg"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2920 | } |
| 2921 | } |
| 2922 | |
| 2923 | |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2924 | static void synth_setb_reg ( Bool simd, Int reg, Condcode cond ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2925 | { |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2926 | if (reg < 4) { |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2927 | emit_setb_reg ( simd, reg, cond ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2928 | } else { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2929 | VG_(emit_swapl_reg_EAX) ( reg ); |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 2930 | emit_setb_reg ( simd, R_AL, cond ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2931 | VG_(emit_swapl_reg_EAX) ( reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2932 | } |
| 2933 | } |
| 2934 | |
| 2935 | |
sewardj | 3d7c9c8 | 2003-03-26 21:08:13 +0000 | [diff] [blame] | 2936 | static void synth_MMX2_regmem ( Bool uses_flags, Bool sets_flags, |
| 2937 | UChar first_byte, |
| 2938 | UChar second_byte, |
| 2939 | Int ireg ) |
| 2940 | { |
| 2941 | emit_MMX2_regmem ( uses_flags, sets_flags, |
| 2942 | first_byte, second_byte, ireg ); |
| 2943 | } |
| 2944 | |
| 2945 | |
sewardj | ca86001 | 2003-03-27 23:52:58 +0000 | [diff] [blame] | 2946 | static void synth_MMX2_reg_to_mmxreg ( Bool uses_flags, Bool sets_flags, |
| 2947 | UChar first_byte, |
| 2948 | UChar second_byte, |
| 2949 | Int ireg ) |
| 2950 | { |
| 2951 | emit_MMX2_reg_to_mmxreg ( uses_flags, sets_flags, |
| 2952 | first_byte, second_byte, ireg ); |
| 2953 | } |
| 2954 | |
sewardj | d1c9e43 | 2003-04-04 20:40:34 +0000 | [diff] [blame] | 2955 | static void synth_MMX2_mmxreg_to_reg ( Bool uses_flags, Bool sets_flags, |
| 2956 | UChar first_byte, |
| 2957 | UChar second_byte, |
| 2958 | Int ireg ) |
| 2959 | { |
| 2960 | emit_MMX2_mmxreg_to_reg ( uses_flags, sets_flags, |
| 2961 | first_byte, second_byte, ireg ); |
| 2962 | } |
| 2963 | |
sewardj | 3d7c9c8 | 2003-03-26 21:08:13 +0000 | [diff] [blame] | 2964 | static void synth_MMX2_no_mem ( Bool uses_flags, Bool sets_flags, |
| 2965 | UChar first_byte, |
| 2966 | UChar second_byte ) |
| 2967 | { |
| 2968 | emit_MMX2_no_mem ( uses_flags, sets_flags, first_byte, second_byte ); |
| 2969 | } |
| 2970 | |
| 2971 | |
sewardj | ca86001 | 2003-03-27 23:52:58 +0000 | [diff] [blame] | 2972 | static void synth_MMX3_no_mem ( Bool uses_flags, Bool sets_flags, |
| 2973 | UChar first_byte, |
| 2974 | UChar second_byte, |
| 2975 | UChar third_byte ) |
| 2976 | { |
| 2977 | emit_MMX3_no_mem ( uses_flags, sets_flags, |
| 2978 | first_byte, second_byte, third_byte ); |
| 2979 | } |
| 2980 | |
| 2981 | |
sewardj | 3d7c9c8 | 2003-03-26 21:08:13 +0000 | [diff] [blame] | 2982 | static void synth_MMX1_no_mem ( Bool uses_flags, Bool sets_flags, |
| 2983 | UChar first_byte ) |
| 2984 | { |
| 2985 | emit_MMX1_no_mem ( uses_flags, sets_flags, first_byte ); |
| 2986 | } |
| 2987 | |
| 2988 | |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2989 | static void synth_fpu_regmem ( Bool uses_flags, Bool sets_flags, |
| 2990 | UChar first_byte, |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2991 | UChar second_byte_masked, |
| 2992 | Int reg ) |
| 2993 | { |
sewardj | 3d7c9c8 | 2003-03-26 21:08:13 +0000 | [diff] [blame] | 2994 | emit_fpu_regmem ( uses_flags, sets_flags, |
| 2995 | first_byte, second_byte_masked, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2996 | } |
| 2997 | |
| 2998 | |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 2999 | static void synth_fpu_no_mem ( Bool uses_flags, Bool sets_flags, |
| 3000 | UChar first_byte, |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3001 | UChar second_byte ) |
| 3002 | { |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 3003 | emit_fpu_no_mem ( uses_flags, sets_flags, first_byte, second_byte ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3004 | } |
| 3005 | |
| 3006 | |
| 3007 | static void synth_movl_reg_reg ( Int src, Int dst ) |
| 3008 | { |
| 3009 | emit_movl_reg_reg ( src, dst ); |
| 3010 | } |
| 3011 | |
| 3012 | static void synth_cmovl_reg_reg ( Condcode cond, Int src, Int dst ) |
| 3013 | { |
sewardj | a2113f9 | 2002-12-12 23:42:48 +0000 | [diff] [blame] | 3014 | Int tgt; |
| 3015 | |
| 3016 | VG_(init_target)(&tgt); |
| 3017 | |
| 3018 | VG_(emit_jcondshort_target) ( True, invertCondition(cond), &tgt); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3019 | emit_movl_reg_reg ( src, dst ); |
sewardj | a2113f9 | 2002-12-12 23:42:48 +0000 | [diff] [blame] | 3020 | |
| 3021 | VG_(target_forward)(&tgt); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3022 | } |
| 3023 | |
| 3024 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3025 | /*----------------------------------------------------*/ |
| 3026 | /*--- Top level of the uinstr -> x86 translation. ---*/ |
| 3027 | /*----------------------------------------------------*/ |
| 3028 | |
| 3029 | /* Return the byte offset from %ebp (ie, into baseBlock) |
| 3030 | for the specified ArchReg or SpillNo. */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3031 | static Int spillOrArchOffset ( Int size, Tag tag, UInt value ) |
| 3032 | { |
| 3033 | if (tag == SpillNo) { |
| 3034 | vg_assert(size == 4); |
| 3035 | vg_assert(value >= 0 && value < VG_MAX_SPILLSLOTS); |
| 3036 | return 4 * (value + VGOFF_(spillslots)); |
| 3037 | } |
| 3038 | if (tag == ArchReg) { |
| 3039 | switch (value) { |
| 3040 | case R_EAX: return 4 * VGOFF_(m_eax); |
| 3041 | case R_ECX: return 4 * VGOFF_(m_ecx); |
| 3042 | case R_EDX: return 4 * VGOFF_(m_edx); |
| 3043 | case R_EBX: return 4 * VGOFF_(m_ebx); |
| 3044 | case R_ESP: |
| 3045 | if (size == 1) return 4 * VGOFF_(m_eax) + 1; |
| 3046 | else return 4 * VGOFF_(m_esp); |
| 3047 | case R_EBP: |
| 3048 | if (size == 1) return 4 * VGOFF_(m_ecx) + 1; |
| 3049 | else return 4 * VGOFF_(m_ebp); |
| 3050 | case R_ESI: |
| 3051 | if (size == 1) return 4 * VGOFF_(m_edx) + 1; |
| 3052 | else return 4 * VGOFF_(m_esi); |
| 3053 | case R_EDI: |
| 3054 | if (size == 1) return 4 * VGOFF_(m_ebx) + 1; |
| 3055 | else return 4 * VGOFF_(m_edi); |
| 3056 | } |
| 3057 | } |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 3058 | VG_(core_panic)("spillOrArchOffset"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3059 | } |
| 3060 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3061 | static Int eflagsOffset ( void ) |
| 3062 | { |
| 3063 | return 4 * VGOFF_(m_eflags); |
| 3064 | } |
| 3065 | |
sewardj | e104247 | 2002-09-30 12:33:11 +0000 | [diff] [blame] | 3066 | static Int segRegOffset ( UInt archregs ) |
| 3067 | { |
| 3068 | switch (archregs) { |
| 3069 | case R_CS: return 4 * VGOFF_(m_cs); |
| 3070 | case R_SS: return 4 * VGOFF_(m_ss); |
| 3071 | case R_DS: return 4 * VGOFF_(m_ds); |
| 3072 | case R_ES: return 4 * VGOFF_(m_es); |
| 3073 | case R_FS: return 4 * VGOFF_(m_fs); |
| 3074 | case R_GS: return 4 * VGOFF_(m_gs); |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 3075 | default: VG_(core_panic)("segRegOffset"); |
sewardj | e104247 | 2002-09-30 12:33:11 +0000 | [diff] [blame] | 3076 | } |
| 3077 | } |
| 3078 | |
njn | f4ce3d3 | 2003-02-10 10:17:26 +0000 | [diff] [blame] | 3079 | UInt VG_(get_archreg) ( UInt arch ) |
| 3080 | { |
| 3081 | switch (arch) { |
| 3082 | case R_EAX: return VG_(baseBlock)[ VGOFF_(m_eax) ]; |
| 3083 | case R_ECX: return VG_(baseBlock)[ VGOFF_(m_ecx) ]; |
| 3084 | case R_EDX: return VG_(baseBlock)[ VGOFF_(m_edx) ]; |
| 3085 | case R_EBX: return VG_(baseBlock)[ VGOFF_(m_ebx) ]; |
| 3086 | case R_ESP: return VG_(baseBlock)[ VGOFF_(m_esp) ]; |
| 3087 | case R_EBP: return VG_(baseBlock)[ VGOFF_(m_ebp) ]; |
| 3088 | case R_ESI: return VG_(baseBlock)[ VGOFF_(m_esi) ]; |
| 3089 | case R_EDI: return VG_(baseBlock)[ VGOFF_(m_edi) ]; |
| 3090 | default: VG_(core_panic)( "get_thread_archreg"); |
| 3091 | } |
| 3092 | } |
| 3093 | |
| 3094 | UInt VG_(get_thread_archreg) ( ThreadId tid, UInt arch ) |
| 3095 | { |
| 3096 | ThreadState* tst; |
| 3097 | |
| 3098 | vg_assert(VG_(is_valid_tid)(tid)); |
| 3099 | tst = & VG_(threads)[tid]; |
| 3100 | |
| 3101 | switch (arch) { |
| 3102 | case R_EAX: return tst->m_eax; |
| 3103 | case R_ECX: return tst->m_ecx; |
| 3104 | case R_EDX: return tst->m_edx; |
| 3105 | case R_EBX: return tst->m_ebx; |
| 3106 | case R_ESP: return tst->m_esp; |
| 3107 | case R_EBP: return tst->m_ebp; |
| 3108 | case R_ESI: return tst->m_esi; |
| 3109 | case R_EDI: return tst->m_edi; |
| 3110 | default: VG_(core_panic)( "get_thread_archreg"); |
| 3111 | } |
| 3112 | } |
| 3113 | |
njn | b93d178 | 2003-02-03 12:03:22 +0000 | [diff] [blame] | 3114 | /* Return the baseBlock index for the specified shadow register */ |
njn | 9b007f6 | 2003-04-07 14:40:25 +0000 | [diff] [blame] | 3115 | static Int shadow_reg_index ( Int arch ) |
njn | b93d178 | 2003-02-03 12:03:22 +0000 | [diff] [blame] | 3116 | { |
| 3117 | switch (arch) { |
| 3118 | case R_EAX: return VGOFF_(sh_eax); |
| 3119 | case R_ECX: return VGOFF_(sh_ecx); |
| 3120 | case R_EDX: return VGOFF_(sh_edx); |
| 3121 | case R_EBX: return VGOFF_(sh_ebx); |
| 3122 | case R_ESP: return VGOFF_(sh_esp); |
| 3123 | case R_EBP: return VGOFF_(sh_ebp); |
| 3124 | case R_ESI: return VGOFF_(sh_esi); |
| 3125 | case R_EDI: return VGOFF_(sh_edi); |
| 3126 | default: VG_(core_panic)( "shadow_reg_index"); |
| 3127 | } |
| 3128 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3129 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 3130 | /* Return the byte offset from %ebp (ie, into baseBlock) |
| 3131 | for the specified shadow register */ |
njn | 4ba5a79 | 2002-09-30 10:23:54 +0000 | [diff] [blame] | 3132 | Int VG_(shadow_reg_offset) ( Int arch ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3133 | { |
njn | b93d178 | 2003-02-03 12:03:22 +0000 | [diff] [blame] | 3134 | return 4 * shadow_reg_index ( arch ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3135 | } |
| 3136 | |
njn | 4ba5a79 | 2002-09-30 10:23:54 +0000 | [diff] [blame] | 3137 | Int VG_(shadow_flags_offset) ( void ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3138 | { |
| 3139 | return 4 * VGOFF_(sh_eflags); |
| 3140 | } |
| 3141 | |
njn | b93d178 | 2003-02-03 12:03:22 +0000 | [diff] [blame] | 3142 | /* Accessing shadow arch. registers */ |
| 3143 | UInt VG_(get_shadow_archreg) ( UInt archreg ) |
| 3144 | { |
| 3145 | return VG_(baseBlock)[ shadow_reg_index(archreg) ]; |
| 3146 | } |
| 3147 | |
| 3148 | void VG_(set_shadow_archreg) ( UInt archreg, UInt val ) |
| 3149 | { |
| 3150 | VG_(baseBlock)[ shadow_reg_index(archreg) ] = val; |
| 3151 | } |
| 3152 | |
njn | d304045 | 2003-05-19 15:04:06 +0000 | [diff] [blame] | 3153 | void VG_(set_shadow_eflags) ( UInt val ) |
| 3154 | { |
| 3155 | VG_(baseBlock)[ VGOFF_(sh_eflags) ] = val; |
| 3156 | } |
| 3157 | |
njn | f4ce3d3 | 2003-02-10 10:17:26 +0000 | [diff] [blame] | 3158 | UInt VG_(get_thread_shadow_archreg) ( ThreadId tid, UInt archreg ) |
| 3159 | { |
| 3160 | ThreadState* tst; |
| 3161 | |
| 3162 | vg_assert(VG_(is_valid_tid)(tid)); |
| 3163 | tst = & VG_(threads)[tid]; |
| 3164 | |
| 3165 | switch (archreg) { |
| 3166 | case R_EAX: return tst->sh_eax; |
| 3167 | case R_ECX: return tst->sh_ecx; |
| 3168 | case R_EDX: return tst->sh_edx; |
| 3169 | case R_EBX: return tst->sh_ebx; |
| 3170 | case R_ESP: return tst->sh_esp; |
| 3171 | case R_EBP: return tst->sh_ebp; |
| 3172 | case R_ESI: return tst->sh_esi; |
| 3173 | case R_EDI: return tst->sh_edi; |
| 3174 | default: VG_(core_panic)( "get_thread_shadow_archreg"); |
| 3175 | } |
| 3176 | } |
| 3177 | |
| 3178 | void VG_(set_thread_shadow_archreg) ( ThreadId tid, UInt archreg, UInt val ) |
| 3179 | { |
| 3180 | ThreadState* tst; |
| 3181 | |
| 3182 | vg_assert(VG_(is_valid_tid)(tid)); |
| 3183 | tst = & VG_(threads)[tid]; |
| 3184 | |
| 3185 | switch (archreg) { |
| 3186 | case R_EAX: tst->sh_eax = val; break; |
| 3187 | case R_ECX: tst->sh_ecx = val; break; |
| 3188 | case R_EDX: tst->sh_edx = val; break; |
| 3189 | case R_EBX: tst->sh_ebx = val; break; |
| 3190 | case R_ESP: tst->sh_esp = val; break; |
| 3191 | case R_EBP: tst->sh_ebp = val; break; |
| 3192 | case R_ESI: tst->sh_esi = val; break; |
| 3193 | case R_EDI: tst->sh_edi = val; break; |
| 3194 | default: VG_(core_panic)( "set_thread_shadow_archreg"); |
| 3195 | } |
| 3196 | } |
| 3197 | |
njn | b93d178 | 2003-02-03 12:03:22 +0000 | [diff] [blame] | 3198 | Addr VG_(shadow_archreg_address) ( UInt archreg ) |
| 3199 | { |
| 3200 | return (Addr) & VG_(baseBlock)[ shadow_reg_index(archreg) ]; |
| 3201 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3202 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3203 | static void synth_WIDEN_signed ( Int sz_src, Int sz_dst, Int reg ) |
| 3204 | { |
| 3205 | if (sz_src == 1 && sz_dst == 4) { |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 3206 | VG_(emit_shiftopv_lit_reg) ( False, 4, SHL, 24, reg ); |
| 3207 | VG_(emit_shiftopv_lit_reg) ( False, 4, SAR, 24, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3208 | } |
| 3209 | else if (sz_src == 2 && sz_dst == 4) { |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 3210 | VG_(emit_shiftopv_lit_reg) ( False, 4, SHL, 16, reg ); |
| 3211 | VG_(emit_shiftopv_lit_reg) ( False, 4, SAR, 16, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3212 | } |
| 3213 | else if (sz_src == 1 && sz_dst == 2) { |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 3214 | VG_(emit_shiftopv_lit_reg) ( False, 2, SHL, 8, reg ); |
| 3215 | VG_(emit_shiftopv_lit_reg) ( False, 2, SAR, 8, reg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3216 | } |
| 3217 | else |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 3218 | VG_(core_panic)("synth_WIDEN"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3219 | } |
| 3220 | |
| 3221 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3222 | /*----------------------------------------------------*/ |
| 3223 | /*--- Generate code for a single UInstr. ---*/ |
| 3224 | /*----------------------------------------------------*/ |
| 3225 | |
sewardj | 478335c | 2002-10-05 02:44:47 +0000 | [diff] [blame] | 3226 | static __inline__ |
| 3227 | Bool writeFlagUse ( UInstr* u ) |
njn | 5a74eb8 | 2002-08-06 20:56:40 +0000 | [diff] [blame] | 3228 | { |
| 3229 | return (u->flags_w != FlagsEmpty); |
| 3230 | } |
| 3231 | |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 3232 | static __inline__ |
| 3233 | Bool readFlagUse ( UInstr* u ) |
| 3234 | { |
| 3235 | /* If the UInstr writes some flags but not all, then we still need |
| 3236 | to consider it as reading flags so that the unchanged values are |
| 3237 | passed through properly. (D is special) */ |
| 3238 | return |
| 3239 | (u->flags_r != FlagsEmpty) || |
| 3240 | (u->flags_w != FlagsEmpty && u->flags_w != FlagsOSZACP) ; |
| 3241 | } |
| 3242 | |
sewardj | 478335c | 2002-10-05 02:44:47 +0000 | [diff] [blame] | 3243 | static __inline__ |
| 3244 | Bool anyFlagUse ( UInstr* u ) |
| 3245 | { |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 3246 | return readFlagUse(u) || writeFlagUse(u); |
sewardj | 478335c | 2002-10-05 02:44:47 +0000 | [diff] [blame] | 3247 | } |
| 3248 | |
| 3249 | |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 3250 | /* *fplive==True indicates that the simulated machine's FPU/SSE state is in |
| 3251 | the real machine's cpu. If so we need to be very careful not to trash it. |
| 3252 | If FPU/SSE state is live and we deem it necessary to copy it back to |
| 3253 | the simulated machine's FPU/SSE state, we do so. The final state of |
| 3254 | fpliveness is returned. In short we _must_ do put_sse_state if |
sewardj | 1b7d802 | 2002-11-30 12:35:42 +0000 | [diff] [blame] | 3255 | there is any chance at all that the code generated for a UInstr |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 3256 | will change the real FPU/MMX/SSE/SSE2 state. |
sewardj | 1b7d802 | 2002-11-30 12:35:42 +0000 | [diff] [blame] | 3257 | */ |
sewardj | b5ff83e | 2002-12-01 19:40:49 +0000 | [diff] [blame] | 3258 | static void emitUInstr ( UCodeBlock* cb, Int i, |
| 3259 | RRegSet regs_live_before, |
| 3260 | /* Running state, which we update. */ |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 3261 | Bool* sselive, /* True<==>FPU/SSE |
| 3262 | state in real FPU */ |
sewardj | b5ff83e | 2002-12-01 19:40:49 +0000 | [diff] [blame] | 3263 | Addr* orig_eip, /* previous curr_eip, or zero */ |
| 3264 | Addr* curr_eip ) /* current eip */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3265 | { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 3266 | Int old_emitted_code_used; |
| 3267 | UInstr* u = &cb->instrs[i]; |
| 3268 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3269 | if (dis) |
njn | 4ba5a79 | 2002-09-30 10:23:54 +0000 | [diff] [blame] | 3270 | VG_(pp_UInstr_regs)(i, u); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3271 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 3272 | old_emitted_code_used = emitted_code_used; |
| 3273 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3274 | switch (u->opcode) { |
sewardj | 7a5ebcf | 2002-11-13 22:42:13 +0000 | [diff] [blame] | 3275 | case NOP: case LOCK: case CALLM_S: case CALLM_E: break; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3276 | |
sewardj | b5ff83e | 2002-12-01 19:40:49 +0000 | [diff] [blame] | 3277 | case INCEIP: |
| 3278 | /* Advance %EIP some small amount. */ |
| 3279 | *curr_eip += (UInt)(u->val1); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 3280 | |
sewardj | b5ff83e | 2002-12-01 19:40:49 +0000 | [diff] [blame] | 3281 | if (*orig_eip == 0 /* we don't know what the old value was */ |
| 3282 | || ((*orig_eip & ~0xFF) != (*curr_eip & ~0xFF))) { |
| 3283 | /* We have to update all 32 bits of the value. */ |
| 3284 | VG_(emit_movv_lit_offregmem)( |
| 3285 | 4, *curr_eip, 4*VGOFF_(m_eip), R_EBP); |
| 3286 | } else { |
| 3287 | /* Cool! we only need to update lowest 8 bits */ |
| 3288 | VG_(emit_movb_lit_offregmem)( |
| 3289 | *curr_eip & 0xFF, 4*VGOFF_(m_eip)+0, R_EBP); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 3290 | } |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 3291 | |
sewardj | b5ff83e | 2002-12-01 19:40:49 +0000 | [diff] [blame] | 3292 | *orig_eip = *curr_eip; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3293 | break; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3294 | |
| 3295 | case LEA1: { |
| 3296 | vg_assert(u->tag1 == RealReg); |
| 3297 | vg_assert(u->tag2 == RealReg); |
| 3298 | emit_lea_litreg_reg ( u->lit32, u->val1, u->val2 ); |
| 3299 | break; |
| 3300 | } |
| 3301 | |
| 3302 | case LEA2: { |
| 3303 | vg_assert(u->tag1 == RealReg); |
| 3304 | vg_assert(u->tag2 == RealReg); |
| 3305 | vg_assert(u->tag3 == RealReg); |
| 3306 | emit_lea_sib_reg ( u->lit32, u->extra4b, |
| 3307 | u->val1, u->val2, u->val3 ); |
| 3308 | break; |
| 3309 | } |
| 3310 | |
| 3311 | case WIDEN: { |
| 3312 | vg_assert(u->tag1 == RealReg); |
| 3313 | if (u->signed_widen) { |
| 3314 | synth_WIDEN_signed ( u->extra4b, u->size, u->val1 ); |
| 3315 | } else { |
| 3316 | /* no need to generate any code. */ |
| 3317 | } |
| 3318 | break; |
| 3319 | } |
| 3320 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3321 | case STORE: { |
| 3322 | vg_assert(u->tag1 == RealReg); |
| 3323 | vg_assert(u->tag2 == RealReg); |
| 3324 | synth_mov_reg_memreg ( u->size, u->val1, u->val2 ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3325 | break; |
| 3326 | } |
| 3327 | |
| 3328 | case LOAD: { |
| 3329 | vg_assert(u->tag1 == RealReg); |
| 3330 | vg_assert(u->tag2 == RealReg); |
| 3331 | synth_mov_regmem_reg ( u->size, u->val1, u->val2 ); |
| 3332 | break; |
| 3333 | } |
| 3334 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3335 | case GET: { |
| 3336 | vg_assert(u->tag1 == ArchReg || u->tag1 == SpillNo); |
| 3337 | vg_assert(u->tag2 == RealReg); |
| 3338 | synth_mov_offregmem_reg ( |
| 3339 | u->size, |
| 3340 | spillOrArchOffset( u->size, u->tag1, u->val1 ), |
| 3341 | R_EBP, |
| 3342 | u->val2 |
| 3343 | ); |
| 3344 | break; |
| 3345 | } |
| 3346 | |
| 3347 | case PUT: { |
| 3348 | vg_assert(u->tag2 == ArchReg || u->tag2 == SpillNo); |
| 3349 | vg_assert(u->tag1 == RealReg); |
njn | 9b007f6 | 2003-04-07 14:40:25 +0000 | [diff] [blame] | 3350 | synth_mov_reg_offregmem ( |
| 3351 | u->size, |
| 3352 | u->val1, |
| 3353 | spillOrArchOffset( u->size, u->tag2, u->val2 ), |
| 3354 | R_EBP |
| 3355 | ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3356 | break; |
| 3357 | } |
| 3358 | |
sewardj | e104247 | 2002-09-30 12:33:11 +0000 | [diff] [blame] | 3359 | case GETSEG: { |
| 3360 | vg_assert(u->tag1 == ArchRegS); |
| 3361 | vg_assert(u->tag2 == RealReg); |
| 3362 | vg_assert(u->size == 2); |
| 3363 | synth_mov_offregmem_reg ( |
| 3364 | 4, |
| 3365 | segRegOffset( u->val1 ), |
| 3366 | R_EBP, |
| 3367 | u->val2 |
| 3368 | ); |
| 3369 | break; |
| 3370 | } |
| 3371 | |
| 3372 | case PUTSEG: { |
| 3373 | vg_assert(u->tag1 == RealReg); |
| 3374 | vg_assert(u->tag2 == ArchRegS); |
| 3375 | vg_assert(u->size == 2); |
| 3376 | synth_mov_reg_offregmem ( |
| 3377 | 4, |
| 3378 | u->val1, |
| 3379 | segRegOffset( u->val2 ), |
| 3380 | R_EBP |
| 3381 | ); |
| 3382 | break; |
| 3383 | } |
| 3384 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3385 | case GETF: { |
| 3386 | vg_assert(u->size == 2 || u->size == 4); |
| 3387 | vg_assert(u->tag1 == RealReg); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 3388 | |
| 3389 | /* This complexity is because the D(irection) flag is stored |
| 3390 | separately from the rest of EFLAGS. */ |
| 3391 | |
| 3392 | /* We're only fetching from the Simd state, so make sure it's |
| 3393 | up to date. */ |
| 3394 | maybe_emit_put_eflags(); |
| 3395 | |
| 3396 | /* get D in u->val1 (== 1 or -1) */ |
| 3397 | synth_mov_offregmem_reg (u->size, 4*VGOFF_(m_dflag), R_EBP, u->val1); |
| 3398 | |
| 3399 | /* u->val1 &= EFlagD (== 0 or EFlagD) */ |
| 3400 | synth_nonshiftop_lit_reg(False, AND, u->size, EFlagD, u->val1); |
| 3401 | |
| 3402 | /* EFLAGS &= ~EFlagD (make sure there's no surprises) */ |
| 3403 | synth_nonshiftop_lit_offregmem(False, AND, u->size, ~EFlagD, |
| 3404 | eflagsOffset(), R_EBP); |
| 3405 | |
| 3406 | /* EFLAGS &= ~EFlagD (make sure there's no surprises) */ |
| 3407 | synth_nonshiftop_lit_offregmem(False, AND, u->size, ~EFlagD, |
| 3408 | eflagsOffset(), R_EBP); |
| 3409 | |
| 3410 | /* u->val1 |= EFLAGS (EFLAGS & EflagD == 0) */ |
| 3411 | synth_nonshiftop_offregmem_reg(False, OR, u->size, |
| 3412 | eflagsOffset(), R_EBP, u->val1); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3413 | break; |
| 3414 | } |
| 3415 | |
| 3416 | case PUTF: { |
| 3417 | vg_assert(u->size == 2 || u->size == 4); |
| 3418 | vg_assert(u->tag1 == RealReg); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 3419 | |
| 3420 | /* When putting a value into EFLAGS, this generates the |
| 3421 | correct value for m_dflag (-1 or 1), and clears the D bit |
| 3422 | in EFLAGS. */ |
| 3423 | |
| 3424 | /* We're updating the whole flag state, so the old state |
| 3425 | doesn't matter; make sure that the new simulated state |
| 3426 | will be fetched when needed. */ |
| 3427 | eflags_state = UPD_Simd; |
| 3428 | |
| 3429 | /* store EFLAGS (with D) */ |
| 3430 | synth_mov_reg_offregmem (u->size, u->val1, eflagsOffset(), R_EBP); |
| 3431 | |
| 3432 | /* u->val1 &= EFlagD */ |
| 3433 | synth_nonshiftop_lit_reg(False, AND, u->size, EFlagD, u->val1); |
| 3434 | |
| 3435 | /* computes: u->val1 = (u->val1 == 0) ? 1 : -1 */ |
| 3436 | synth_unaryop_reg(False, NEG, u->size, u->val1); |
| 3437 | synth_nonshiftop_reg_reg(False, SBB, u->size, u->val1, u->val1); |
| 3438 | synth_nonshiftop_lit_reg(False, SBB, u->size, -1, u->val1); |
| 3439 | |
| 3440 | /* save D */ |
| 3441 | synth_mov_reg_offregmem(u->size, u->val1, 4*VGOFF_(m_dflag), R_EBP); |
| 3442 | |
| 3443 | /* EFLAGS &= ~EFlagD */ |
| 3444 | synth_nonshiftop_lit_offregmem(False, AND, u->size, ~EFlagD, |
| 3445 | eflagsOffset(), R_EBP); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3446 | break; |
| 3447 | } |
| 3448 | |
| 3449 | case MOV: { |
| 3450 | vg_assert(u->tag1 == RealReg || u->tag1 == Literal); |
| 3451 | vg_assert(u->tag2 == RealReg); |
| 3452 | switch (u->tag1) { |
| 3453 | case RealReg: vg_assert(u->size == 4); |
| 3454 | if (u->val1 != u->val2) |
| 3455 | synth_movl_reg_reg ( u->val1, u->val2 ); |
| 3456 | break; |
| 3457 | case Literal: synth_mov_lit_reg ( u->size, u->lit32, u->val2 ); |
| 3458 | break; |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 3459 | default: VG_(core_panic)("emitUInstr:mov"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3460 | } |
| 3461 | break; |
| 3462 | } |
| 3463 | |
sewardj | e104247 | 2002-09-30 12:33:11 +0000 | [diff] [blame] | 3464 | case USESEG: { |
| 3465 | /* Lazy: copy all three vals; synth_ccall ignores any unnecessary |
| 3466 | ones. */ |
sewardj | d077f53 | 2002-09-30 21:52:50 +0000 | [diff] [blame] | 3467 | UInt argv[] = { u->val1, u->val2 }; |
| 3468 | UInt tagv[] = { RealReg, RealReg }; |
sewardj | e104247 | 2002-09-30 12:33:11 +0000 | [diff] [blame] | 3469 | UInt ret_reg = u->val2; |
| 3470 | |
| 3471 | vg_assert(u->tag1 == RealReg); |
| 3472 | vg_assert(u->tag2 == RealReg); |
| 3473 | vg_assert(u->size == 0); |
| 3474 | |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 3475 | if (*sselive) { |
| 3476 | emit_put_sse_state(); |
| 3477 | *sselive = False; |
sewardj | 1b7d802 | 2002-11-30 12:35:42 +0000 | [diff] [blame] | 3478 | } |
| 3479 | |
sewardj | e104247 | 2002-09-30 12:33:11 +0000 | [diff] [blame] | 3480 | VG_(synth_ccall) ( (Addr) & VG_(do_useseg), |
| 3481 | 2, /* args */ |
| 3482 | 0, /* regparms_n */ |
| 3483 | argv, tagv, |
| 3484 | ret_reg, regs_live_before, u->regs_live_after ); |
| 3485 | break; |
| 3486 | } |
| 3487 | |
sewardj | 478335c | 2002-10-05 02:44:47 +0000 | [diff] [blame] | 3488 | case SBB: |
| 3489 | case ADC: |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3490 | case XOR: |
| 3491 | case OR: |
| 3492 | case AND: |
| 3493 | case SUB: |
sewardj | 478335c | 2002-10-05 02:44:47 +0000 | [diff] [blame] | 3494 | case ADD: { |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3495 | vg_assert(u->tag2 == RealReg); |
| 3496 | switch (u->tag1) { |
| 3497 | case Literal: synth_nonshiftop_lit_reg ( |
sewardj | 478335c | 2002-10-05 02:44:47 +0000 | [diff] [blame] | 3498 | anyFlagUse(u), |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3499 | u->opcode, u->size, u->lit32, u->val2 ); |
| 3500 | break; |
| 3501 | case RealReg: synth_nonshiftop_reg_reg ( |
sewardj | 478335c | 2002-10-05 02:44:47 +0000 | [diff] [blame] | 3502 | anyFlagUse(u), |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3503 | u->opcode, u->size, u->val1, u->val2 ); |
| 3504 | break; |
| 3505 | case ArchReg: synth_nonshiftop_offregmem_reg ( |
sewardj | 478335c | 2002-10-05 02:44:47 +0000 | [diff] [blame] | 3506 | anyFlagUse(u), |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3507 | u->opcode, u->size, |
| 3508 | spillOrArchOffset( u->size, u->tag1, u->val1 ), |
| 3509 | R_EBP, |
| 3510 | u->val2 ); |
| 3511 | break; |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 3512 | default: VG_(core_panic)("emitUInstr:non-shift-op"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3513 | } |
| 3514 | break; |
| 3515 | } |
| 3516 | |
sewardj | 478335c | 2002-10-05 02:44:47 +0000 | [diff] [blame] | 3517 | case RCR: |
| 3518 | case RCL: |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3519 | case ROR: |
| 3520 | case ROL: |
| 3521 | case SAR: |
| 3522 | case SHR: |
| 3523 | case SHL: { |
| 3524 | vg_assert(u->tag2 == RealReg); |
| 3525 | switch (u->tag1) { |
| 3526 | case Literal: synth_shiftop_lit_reg ( |
sewardj | 478335c | 2002-10-05 02:44:47 +0000 | [diff] [blame] | 3527 | anyFlagUse(u), |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3528 | u->opcode, u->size, u->lit32, u->val2 ); |
| 3529 | break; |
| 3530 | case RealReg: synth_shiftop_reg_reg ( |
sewardj | 478335c | 2002-10-05 02:44:47 +0000 | [diff] [blame] | 3531 | anyFlagUse(u), |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3532 | u->opcode, u->size, u->val1, u->val2 ); |
| 3533 | break; |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 3534 | default: VG_(core_panic)("emitUInstr:non-shift-op"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3535 | } |
| 3536 | break; |
| 3537 | } |
| 3538 | |
| 3539 | case INC: |
| 3540 | case DEC: |
| 3541 | case NEG: |
| 3542 | case NOT: |
| 3543 | vg_assert(u->tag1 == RealReg); |
| 3544 | synth_unaryop_reg ( |
sewardj | 478335c | 2002-10-05 02:44:47 +0000 | [diff] [blame] | 3545 | anyFlagUse(u), u->opcode, u->size, u->val1 ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3546 | break; |
| 3547 | |
| 3548 | case BSWAP: |
| 3549 | vg_assert(u->tag1 == RealReg); |
| 3550 | vg_assert(u->size == 4); |
njn | 4ba5a79 | 2002-09-30 10:23:54 +0000 | [diff] [blame] | 3551 | vg_assert(!VG_(any_flag_use)(u)); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3552 | emit_bswapl_reg ( u->val1 ); |
| 3553 | break; |
| 3554 | |
| 3555 | case CMOV: |
| 3556 | vg_assert(u->tag1 == RealReg); |
| 3557 | vg_assert(u->tag2 == RealReg); |
| 3558 | vg_assert(u->cond != CondAlways); |
| 3559 | vg_assert(u->size == 4); |
| 3560 | synth_cmovl_reg_reg ( u->cond, u->val1, u->val2 ); |
| 3561 | break; |
| 3562 | |
| 3563 | case JMP: { |
| 3564 | vg_assert(u->tag2 == NoValue); |
| 3565 | vg_assert(u->tag1 == RealReg || u->tag1 == Literal); |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 3566 | if (*sselive) { |
| 3567 | emit_put_sse_state(); |
| 3568 | *sselive = False; |
sewardj | 1b7d802 | 2002-11-30 12:35:42 +0000 | [diff] [blame] | 3569 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3570 | if (u->cond == CondAlways) { |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 3571 | switch (u->tag1) { |
| 3572 | case RealReg: |
| 3573 | synth_jmp_reg ( u->val1, u->jmpkind ); |
| 3574 | break; |
| 3575 | case Literal: |
| 3576 | synth_jmp_lit ( u->lit32, u->jmpkind ); |
| 3577 | break; |
| 3578 | default: |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 3579 | VG_(core_panic)("emitUInstr(JMP, unconditional, default)"); |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 3580 | break; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3581 | } |
| 3582 | } else { |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 3583 | switch (u->tag1) { |
| 3584 | case RealReg: |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 3585 | VG_(core_panic)("emitUInstr(JMP, conditional, RealReg)"); |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 3586 | break; |
| 3587 | case Literal: |
| 3588 | vg_assert(u->jmpkind == JmpBoring); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 3589 | /* %eax had better not be live since synth_jcond_lit |
| 3590 | trashes it in some circumstances. If that turns |
| 3591 | out to be a problem we can get synth_jcond_lit to |
| 3592 | push/pop it when it is live. */ |
| 3593 | vg_assert(! IS_RREG_LIVE(VG_(realreg_to_rank)(R_EAX), |
| 3594 | u->regs_live_after)); |
| 3595 | synth_jcond_lit ( u->cond, u->lit32, True ); |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 3596 | break; |
| 3597 | default: |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 3598 | VG_(core_panic)("emitUInstr(JMP, conditional, default)"); |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 3599 | break; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3600 | } |
| 3601 | } |
| 3602 | break; |
| 3603 | } |
| 3604 | |
| 3605 | case JIFZ: |
| 3606 | vg_assert(u->tag1 == RealReg); |
| 3607 | vg_assert(u->tag2 == Literal); |
| 3608 | vg_assert(u->size == 4); |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 3609 | if (*sselive) { |
| 3610 | emit_put_sse_state(); |
| 3611 | *sselive = False; |
sewardj | 1b7d802 | 2002-11-30 12:35:42 +0000 | [diff] [blame] | 3612 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3613 | synth_jmp_ifzero_reg_lit ( u->val1, u->lit32 ); |
| 3614 | break; |
| 3615 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3616 | case PUSH: |
| 3617 | vg_assert(u->tag1 == RealReg); |
| 3618 | vg_assert(u->tag2 == NoValue); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 3619 | VG_(emit_pushv_reg) ( 4, u->val1 ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3620 | break; |
| 3621 | |
| 3622 | case POP: |
| 3623 | vg_assert(u->tag1 == RealReg); |
| 3624 | vg_assert(u->tag2 == NoValue); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 3625 | VG_(emit_popv_reg) ( 4, u->val1 ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3626 | break; |
| 3627 | |
| 3628 | case CALLM: |
| 3629 | vg_assert(u->tag1 == Lit16); |
| 3630 | vg_assert(u->tag2 == NoValue); |
| 3631 | vg_assert(u->size == 0); |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 3632 | if (*sselive) { |
| 3633 | emit_put_sse_state(); |
| 3634 | *sselive = False; |
sewardj | 1b7d802 | 2002-11-30 12:35:42 +0000 | [diff] [blame] | 3635 | } |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 3636 | /* Call to a helper which is pretending to be a real CPU |
| 3637 | instruction (and therefore operates on Real flags and |
| 3638 | registers) */ |
| 3639 | VG_(synth_call) ( False, u->val1, |
| 3640 | True, u->flags_r, u->flags_w ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3641 | break; |
| 3642 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 3643 | case CCALL: { |
sewardj | e104247 | 2002-09-30 12:33:11 +0000 | [diff] [blame] | 3644 | /* If you change this, remember to change USESEG above, since |
| 3645 | that's just a copy of this, slightly simplified. */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 3646 | /* Lazy: copy all three vals; synth_ccall ignores any unnecessary |
| 3647 | ones. */ |
| 3648 | UInt argv[] = { u->val1, u->val2, u->val3 }; |
| 3649 | UInt tagv[] = { RealReg, RealReg, RealReg }; |
| 3650 | UInt ret_reg = ( u->has_ret_val ? u->val3 : INVALID_REALREG ); |
| 3651 | |
| 3652 | if (u->argc >= 1) vg_assert(u->tag1 == RealReg); |
| 3653 | else vg_assert(u->tag1 == NoValue); |
| 3654 | if (u->argc >= 2) vg_assert(u->tag2 == RealReg); |
| 3655 | else vg_assert(u->tag2 == NoValue); |
| 3656 | if (u->argc == 3 || u->has_ret_val) vg_assert(u->tag3 == RealReg); |
| 3657 | else vg_assert(u->tag3 == NoValue); |
njn | 6431be7 | 2002-07-28 09:53:34 +0000 | [diff] [blame] | 3658 | vg_assert(u->size == 0); |
| 3659 | |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 3660 | if (*sselive) { |
| 3661 | emit_put_sse_state(); |
| 3662 | *sselive = False; |
sewardj | 1b7d802 | 2002-11-30 12:35:42 +0000 | [diff] [blame] | 3663 | } |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 3664 | VG_(synth_ccall) ( u->lit32, u->argc, u->regparms_n, argv, tagv, |
| 3665 | ret_reg, regs_live_before, u->regs_live_after ); |
njn | 6431be7 | 2002-07-28 09:53:34 +0000 | [diff] [blame] | 3666 | break; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 3667 | } |
sewardj | e104247 | 2002-09-30 12:33:11 +0000 | [diff] [blame] | 3668 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3669 | case CLEAR: |
| 3670 | vg_assert(u->tag1 == Lit16); |
| 3671 | vg_assert(u->tag2 == NoValue); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 3672 | VG_(emit_add_lit_to_esp) ( u->val1 ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3673 | break; |
| 3674 | |
| 3675 | case CC2VAL: |
| 3676 | vg_assert(u->tag1 == RealReg); |
| 3677 | vg_assert(u->tag2 == NoValue); |
njn | 4ba5a79 | 2002-09-30 10:23:54 +0000 | [diff] [blame] | 3678 | vg_assert(VG_(any_flag_use)(u)); |
sewardj | f0f12aa | 2002-12-28 00:04:08 +0000 | [diff] [blame] | 3679 | synth_setb_reg ( True, u->val1, u->cond ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3680 | break; |
| 3681 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3682 | case FPU_R: |
| 3683 | case FPU_W: |
| 3684 | vg_assert(u->tag1 == Lit16); |
| 3685 | vg_assert(u->tag2 == RealReg); |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 3686 | if (!(*sselive)) { |
| 3687 | emit_get_sse_state(); |
| 3688 | *sselive = True; |
sewardj | 1b7d802 | 2002-11-30 12:35:42 +0000 | [diff] [blame] | 3689 | } |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 3690 | synth_fpu_regmem ( u->flags_r, u->flags_w, |
| 3691 | (u->val1 >> 8) & 0xFF, |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3692 | u->val1 & 0xFF, |
| 3693 | u->val2 ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3694 | break; |
| 3695 | |
| 3696 | case FPU: |
| 3697 | vg_assert(u->tag1 == Lit16); |
| 3698 | vg_assert(u->tag2 == NoValue); |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 3699 | if (!(*sselive)) { |
| 3700 | emit_get_sse_state(); |
| 3701 | *sselive = True; |
sewardj | 1b7d802 | 2002-11-30 12:35:42 +0000 | [diff] [blame] | 3702 | } |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 3703 | synth_fpu_no_mem ( u->flags_r, u->flags_w, |
| 3704 | (u->val1 >> 8) & 0xFF, |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3705 | u->val1 & 0xFF ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3706 | break; |
| 3707 | |
sewardj | 3d7c9c8 | 2003-03-26 21:08:13 +0000 | [diff] [blame] | 3708 | case MMX2_MemWr: |
| 3709 | case MMX2_MemRd: |
sewardj | d1c9e43 | 2003-04-04 20:40:34 +0000 | [diff] [blame] | 3710 | vg_assert(u->size == 4 || u->size == 8); |
sewardj | 3d7c9c8 | 2003-03-26 21:08:13 +0000 | [diff] [blame] | 3711 | vg_assert(u->tag1 == Lit16); |
| 3712 | vg_assert(u->tag2 == RealReg); |
sewardj | ca86001 | 2003-03-27 23:52:58 +0000 | [diff] [blame] | 3713 | vg_assert(u->tag3 == NoValue); |
sewardj | 3d7c9c8 | 2003-03-26 21:08:13 +0000 | [diff] [blame] | 3714 | vg_assert(!anyFlagUse(u)); |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 3715 | if (!(*sselive)) { |
| 3716 | emit_get_sse_state(); |
| 3717 | *sselive = True; |
sewardj | 3d7c9c8 | 2003-03-26 21:08:13 +0000 | [diff] [blame] | 3718 | } |
| 3719 | synth_MMX2_regmem ( u->flags_r, u->flags_w, |
| 3720 | (u->val1 >> 8) & 0xFF, |
| 3721 | u->val1 & 0xFF, |
| 3722 | u->val2 ); |
| 3723 | break; |
| 3724 | |
sewardj | ca86001 | 2003-03-27 23:52:58 +0000 | [diff] [blame] | 3725 | case MMX2_RegRd: |
| 3726 | vg_assert(u->tag1 == Lit16); |
| 3727 | vg_assert(u->tag2 == RealReg); |
| 3728 | vg_assert(u->tag3 == NoValue); |
| 3729 | vg_assert(!anyFlagUse(u)); |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 3730 | if (!(*sselive)) { |
| 3731 | emit_get_sse_state(); |
| 3732 | *sselive = True; |
sewardj | ca86001 | 2003-03-27 23:52:58 +0000 | [diff] [blame] | 3733 | } |
| 3734 | synth_MMX2_reg_to_mmxreg ( u->flags_r, u->flags_w, |
| 3735 | (u->val1 >> 8) & 0xFF, |
| 3736 | u->val1 & 0xFF, |
| 3737 | u->val2 ); |
| 3738 | break; |
| 3739 | |
sewardj | d1c9e43 | 2003-04-04 20:40:34 +0000 | [diff] [blame] | 3740 | case MMX2_RegWr: |
| 3741 | vg_assert(u->tag1 == Lit16); |
| 3742 | vg_assert(u->tag2 == RealReg); |
| 3743 | vg_assert(u->tag3 == NoValue); |
| 3744 | vg_assert(!anyFlagUse(u)); |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 3745 | if (!(*sselive)) { |
| 3746 | emit_get_sse_state(); |
| 3747 | *sselive = True; |
sewardj | d1c9e43 | 2003-04-04 20:40:34 +0000 | [diff] [blame] | 3748 | } |
| 3749 | synth_MMX2_mmxreg_to_reg ( u->flags_r, u->flags_w, |
| 3750 | (u->val1 >> 8) & 0xFF, |
| 3751 | u->val1 & 0xFF, |
| 3752 | u->val2 ); |
| 3753 | break; |
| 3754 | |
sewardj | 3d7c9c8 | 2003-03-26 21:08:13 +0000 | [diff] [blame] | 3755 | case MMX1: |
| 3756 | vg_assert(u->tag1 == Lit16); |
| 3757 | vg_assert(u->tag2 == NoValue); |
sewardj | ca86001 | 2003-03-27 23:52:58 +0000 | [diff] [blame] | 3758 | vg_assert(u->tag3 == NoValue); |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 3759 | if (!(*sselive)) { |
| 3760 | emit_get_sse_state(); |
| 3761 | *sselive = True; |
sewardj | 3d7c9c8 | 2003-03-26 21:08:13 +0000 | [diff] [blame] | 3762 | } |
| 3763 | synth_MMX1_no_mem ( u->flags_r, u->flags_w, |
| 3764 | u->val1 & 0xFF ); |
| 3765 | break; |
| 3766 | |
| 3767 | case MMX2: |
| 3768 | vg_assert(u->tag1 == Lit16); |
| 3769 | vg_assert(u->tag2 == NoValue); |
sewardj | ca86001 | 2003-03-27 23:52:58 +0000 | [diff] [blame] | 3770 | vg_assert(u->tag3 == NoValue); |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 3771 | if (!(*sselive)) { |
| 3772 | emit_get_sse_state(); |
| 3773 | *sselive = True; |
sewardj | 3d7c9c8 | 2003-03-26 21:08:13 +0000 | [diff] [blame] | 3774 | } |
| 3775 | synth_MMX2_no_mem ( u->flags_r, u->flags_w, |
| 3776 | (u->val1 >> 8) & 0xFF, |
| 3777 | u->val1 & 0xFF ); |
| 3778 | break; |
| 3779 | |
sewardj | ca86001 | 2003-03-27 23:52:58 +0000 | [diff] [blame] | 3780 | case MMX3: |
| 3781 | vg_assert(u->tag1 == Lit16); |
| 3782 | vg_assert(u->tag2 == Lit16); |
| 3783 | vg_assert(u->tag3 == NoValue); |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 3784 | if (!(*sselive)) { |
| 3785 | emit_get_sse_state(); |
| 3786 | *sselive = True; |
sewardj | ca86001 | 2003-03-27 23:52:58 +0000 | [diff] [blame] | 3787 | } |
| 3788 | synth_MMX3_no_mem ( u->flags_r, u->flags_w, |
| 3789 | (u->val1 >> 8) & 0xFF, |
| 3790 | u->val1 & 0xFF, |
| 3791 | u->val2 & 0xFF ); |
| 3792 | break; |
| 3793 | |
sewardj | febaa3b | 2003-05-25 01:07:34 +0000 | [diff] [blame] | 3794 | case SSE2a_MemWr: |
| 3795 | case SSE2a_MemRd: |
| 3796 | vg_assert(u->size == 4 || u->size == 16); |
| 3797 | vg_assert(u->tag1 == Lit16); |
| 3798 | vg_assert(u->tag2 == Lit16); |
| 3799 | vg_assert(u->tag3 == RealReg); |
| 3800 | vg_assert(!anyFlagUse(u)); |
| 3801 | if (!(*sselive)) { |
| 3802 | emit_get_sse_state(); |
| 3803 | *sselive = True; |
| 3804 | } |
| 3805 | emit_SSE2a ( u->flags_r, u->flags_w, |
| 3806 | (u->val1 >> 8) & 0xFF, |
| 3807 | u->val1 & 0xFF, |
| 3808 | u->val2 & 0xFF, |
| 3809 | u->val3 ); |
| 3810 | break; |
| 3811 | |
| 3812 | case SSE3a_MemWr: |
| 3813 | case SSE3a_MemRd: |
sewardj | de8aecf | 2003-05-27 00:46:28 +0000 | [diff] [blame] | 3814 | vg_assert(u->size == 4 || u->size == 8 || u->size == 16); |
sewardj | febaa3b | 2003-05-25 01:07:34 +0000 | [diff] [blame] | 3815 | vg_assert(u->tag1 == Lit16); |
| 3816 | vg_assert(u->tag2 == Lit16); |
| 3817 | vg_assert(u->tag3 == RealReg); |
sewardj | febaa3b | 2003-05-25 01:07:34 +0000 | [diff] [blame] | 3818 | if (!(*sselive)) { |
| 3819 | emit_get_sse_state(); |
| 3820 | *sselive = True; |
| 3821 | } |
| 3822 | emit_SSE3a ( u->flags_r, u->flags_w, |
| 3823 | (u->val1 >> 8) & 0xFF, |
| 3824 | u->val1 & 0xFF, |
| 3825 | (u->val2 >> 8) & 0xFF, |
| 3826 | u->val2 & 0xFF, |
| 3827 | u->val3 ); |
| 3828 | break; |
| 3829 | |
| 3830 | case SSE3g_RegRd: |
sewardj | 02af6bc | 2003-06-12 00:56:06 +0000 | [diff] [blame] | 3831 | case SSE3g_RegWr: |
sewardj | febaa3b | 2003-05-25 01:07:34 +0000 | [diff] [blame] | 3832 | vg_assert(u->size == 4); |
| 3833 | vg_assert(u->tag1 == Lit16); |
| 3834 | vg_assert(u->tag2 == Lit16); |
| 3835 | vg_assert(u->tag3 == RealReg); |
| 3836 | vg_assert(!anyFlagUse(u)); |
| 3837 | if (!(*sselive)) { |
| 3838 | emit_get_sse_state(); |
| 3839 | *sselive = True; |
| 3840 | } |
sewardj | 8f33ba6 | 2003-06-14 12:00:45 +0000 | [diff] [blame] | 3841 | if (u->opcode==SSE3g_RegRd) { |
| 3842 | emit_SSE3g_RegRd ( u->flags_r, u->flags_w, |
| 3843 | (u->val1 >> 8) & 0xFF, |
| 3844 | u->val1 & 0xFF, |
| 3845 | (u->val2 >> 8) & 0xFF, |
| 3846 | u->val2 & 0xFF, |
| 3847 | u->val3 ); |
| 3848 | } else { |
| 3849 | emit_SSE3g_RegWr ( u->flags_r, u->flags_w, |
| 3850 | (u->val1 >> 8) & 0xFF, |
| 3851 | u->val1 & 0xFF, |
| 3852 | (u->val2 >> 8) & 0xFF, |
| 3853 | u->val2 & 0xFF, |
| 3854 | u->val3 ); |
| 3855 | } |
sewardj | febaa3b | 2003-05-25 01:07:34 +0000 | [diff] [blame] | 3856 | break; |
| 3857 | |
sewardj | b31b06d | 2003-06-13 00:26:02 +0000 | [diff] [blame] | 3858 | case SSE3g1_RegWr: |
| 3859 | vg_assert(u->size == 4); |
| 3860 | vg_assert(u->tag1 == Lit16); |
| 3861 | vg_assert(u->tag2 == Lit16); |
| 3862 | vg_assert(u->tag3 == RealReg); |
| 3863 | vg_assert(!anyFlagUse(u)); |
| 3864 | if (!(*sselive)) { |
| 3865 | emit_get_sse_state(); |
| 3866 | *sselive = True; |
| 3867 | } |
| 3868 | emit_SSE3g1_RegWr ( u->flags_r, u->flags_w, |
| 3869 | (u->val1 >> 8) & 0xFF, |
| 3870 | u->val1 & 0xFF, |
| 3871 | (u->val2 >> 8) & 0xFF, |
| 3872 | u->val2 & 0xFF, |
| 3873 | u->lit32 & 0xFF, |
| 3874 | u->val3 ); |
| 3875 | break; |
| 3876 | |
| 3877 | case SSE3g1_RegRd: |
| 3878 | vg_assert(u->size == 2); |
| 3879 | vg_assert(u->tag1 == Lit16); |
| 3880 | vg_assert(u->tag2 == Lit16); |
| 3881 | vg_assert(u->tag3 == RealReg); |
| 3882 | vg_assert(!anyFlagUse(u)); |
| 3883 | if (!(*sselive)) { |
| 3884 | emit_get_sse_state(); |
| 3885 | *sselive = True; |
| 3886 | } |
| 3887 | emit_SSE3g1_RegRd ( u->flags_r, u->flags_w, |
| 3888 | (u->val1 >> 8) & 0xFF, |
| 3889 | u->val1 & 0xFF, |
| 3890 | (u->val2 >> 8) & 0xFF, |
| 3891 | u->val2 & 0xFF, |
| 3892 | u->lit32 & 0xFF, |
| 3893 | u->val3 ); |
| 3894 | break; |
| 3895 | |
sewardj | a453fb0 | 2003-06-14 13:22:36 +0000 | [diff] [blame^] | 3896 | case SSE5: |
| 3897 | vg_assert(u->size == 0); |
| 3898 | vg_assert(u->tag1 == Lit16); |
| 3899 | vg_assert(u->tag2 == Lit16); |
| 3900 | vg_assert(u->tag3 == Lit16); |
| 3901 | vg_assert(!anyFlagUse(u)); |
| 3902 | if (!(*sselive)) { |
| 3903 | emit_get_sse_state(); |
| 3904 | *sselive = True; |
| 3905 | } |
| 3906 | emit_SSE5 ( u->flags_r, u->flags_w, |
| 3907 | (u->val1 >> 8) & 0xFF, |
| 3908 | u->val1 & 0xFF, |
| 3909 | (u->val2 >> 8) & 0xFF, |
| 3910 | u->val2 & 0xFF, |
| 3911 | u->val3 & 0xFF ); |
| 3912 | break; |
| 3913 | |
sewardj | febaa3b | 2003-05-25 01:07:34 +0000 | [diff] [blame] | 3914 | case SSE4: |
| 3915 | vg_assert(u->size == 0); |
| 3916 | vg_assert(u->tag1 == Lit16); |
| 3917 | vg_assert(u->tag2 == Lit16); |
| 3918 | vg_assert(u->tag3 == NoValue); |
sewardj | 8f33ba6 | 2003-06-14 12:00:45 +0000 | [diff] [blame] | 3919 | vg_assert(u->flags_r == FlagsEmpty); |
sewardj | febaa3b | 2003-05-25 01:07:34 +0000 | [diff] [blame] | 3920 | if (!(*sselive)) { |
| 3921 | emit_get_sse_state(); |
| 3922 | *sselive = True; |
| 3923 | } |
| 3924 | emit_SSE4 ( u->flags_r, u->flags_w, |
| 3925 | (u->val1 >> 8) & 0xFF, |
| 3926 | u->val1 & 0xFF, |
| 3927 | (u->val2 >> 8) & 0xFF, |
| 3928 | u->val2 & 0xFF ); |
| 3929 | break; |
| 3930 | |
sewardj | a60be0e | 2003-05-26 08:47:27 +0000 | [diff] [blame] | 3931 | case SSE3: |
| 3932 | vg_assert(u->size == 0); |
| 3933 | vg_assert(u->tag1 == Lit16); |
| 3934 | vg_assert(u->tag2 == Lit16); |
| 3935 | vg_assert(u->tag3 == NoValue); |
| 3936 | vg_assert(!anyFlagUse(u)); |
| 3937 | if (!(*sselive)) { |
| 3938 | emit_get_sse_state(); |
| 3939 | *sselive = True; |
| 3940 | } |
| 3941 | emit_SSE3 ( u->flags_r, u->flags_w, |
| 3942 | (u->val1 >> 8) & 0xFF, |
| 3943 | u->val1 & 0xFF, |
| 3944 | u->val2 & 0xFF ); |
| 3945 | break; |
| 3946 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3947 | default: |
sewardj | 1b7d802 | 2002-11-30 12:35:42 +0000 | [diff] [blame] | 3948 | if (VG_(needs).extended_UCode) { |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 3949 | if (*sselive) { |
| 3950 | emit_put_sse_state(); |
| 3951 | *sselive = False; |
sewardj | 1b7d802 | 2002-11-30 12:35:42 +0000 | [diff] [blame] | 3952 | } |
njn | 4ba5a79 | 2002-09-30 10:23:54 +0000 | [diff] [blame] | 3953 | SK_(emit_XUInstr)(u, regs_live_before); |
sewardj | 1b7d802 | 2002-11-30 12:35:42 +0000 | [diff] [blame] | 3954 | } else { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 3955 | VG_(printf)("\nError:\n" |
| 3956 | " unhandled opcode: %u. Perhaps " |
| 3957 | " VG_(needs).extended_UCode should be set?\n", |
| 3958 | u->opcode); |
njn | 4ba5a79 | 2002-09-30 10:23:54 +0000 | [diff] [blame] | 3959 | VG_(pp_UInstr)(0,u); |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 3960 | VG_(core_panic)("emitUInstr: unimplemented opcode"); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 3961 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3962 | } |
| 3963 | |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 3964 | if (0 && (*sselive)) { |
| 3965 | emit_put_sse_state(); |
| 3966 | *sselive = False; |
sewardj | 1b7d802 | 2002-11-30 12:35:42 +0000 | [diff] [blame] | 3967 | } |
| 3968 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 3969 | /* Update UInstr histogram */ |
| 3970 | vg_assert(u->opcode < 100); |
| 3971 | histogram[u->opcode].counts++; |
| 3972 | histogram[u->opcode].size += (emitted_code_used - old_emitted_code_used); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3973 | } |
| 3974 | |
| 3975 | |
| 3976 | /* Emit x86 for the ucode in cb, returning the address of the |
| 3977 | generated code and setting *nbytes to its size. */ |
sewardj | b5ff83e | 2002-12-01 19:40:49 +0000 | [diff] [blame] | 3978 | UChar* VG_(emit_code) ( UCodeBlock* cb, |
| 3979 | Int* nbytes, |
| 3980 | UShort j[VG_MAX_JUMPS] ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3981 | { |
| 3982 | Int i; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 3983 | UChar regs_live_before = 0; /* No regs live at BB start */ |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 3984 | Bool sselive; |
sewardj | b5ff83e | 2002-12-01 19:40:49 +0000 | [diff] [blame] | 3985 | Addr orig_eip, curr_eip; |
sewardj | a2113f9 | 2002-12-12 23:42:48 +0000 | [diff] [blame] | 3986 | Int tgt; |
| 3987 | |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 3988 | reset_state(); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3989 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 3990 | if (dis) VG_(printf)("Generated x86 code:\n"); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 3991 | |
sewardj | 22854b9 | 2002-11-30 14:00:47 +0000 | [diff] [blame] | 3992 | /* Generate decl VG_(dispatch_ctr) and drop into dispatch if we hit |
| 3993 | zero. We have to do this regardless of whether we're t-chaining |
| 3994 | or not. */ |
sewardj | a2113f9 | 2002-12-12 23:42:48 +0000 | [diff] [blame] | 3995 | VG_(init_target)(&tgt); |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 3996 | VG_(new_emit)(False, FlagsEmpty, FlagsOSZAP); |
sewardj | 22854b9 | 2002-11-30 14:00:47 +0000 | [diff] [blame] | 3997 | VG_(emitB) (0xFF); /* decl */ |
| 3998 | emit_amode_litmem_reg((Addr)&VG_(dispatch_ctr), 1); |
| 3999 | if (dis) |
| 4000 | VG_(printf)("\n\t\tdecl (%p)\n", &VG_(dispatch_ctr)); |
sewardj | a2113f9 | 2002-12-12 23:42:48 +0000 | [diff] [blame] | 4001 | VG_(emit_jcondshort_target)(False, CondNZ, &tgt); |
sewardj | 22854b9 | 2002-11-30 14:00:47 +0000 | [diff] [blame] | 4002 | VG_(emit_movv_lit_reg) ( 4, VG_TRC_INNER_COUNTERZERO, R_EBP ); |
| 4003 | emit_ret(); |
sewardj | a2113f9 | 2002-12-12 23:42:48 +0000 | [diff] [blame] | 4004 | VG_(target_forward)(&tgt); |
sewardj | 22854b9 | 2002-11-30 14:00:47 +0000 | [diff] [blame] | 4005 | |
sewardj | b5ff83e | 2002-12-01 19:40:49 +0000 | [diff] [blame] | 4006 | /* Set up running state. */ |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 4007 | sselive = False; |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 4008 | orig_eip = cb->orig_eip; /* we know EIP is up to date on BB entry */ |
sewardj | b5ff83e | 2002-12-01 19:40:49 +0000 | [diff] [blame] | 4009 | curr_eip = cb->orig_eip; |
| 4010 | vg_assert(curr_eip != 0); /* otherwise the incremental updating |
| 4011 | algorithm gets messed up. */ |
sewardj | b5ff83e | 2002-12-01 19:40:49 +0000 | [diff] [blame] | 4012 | /* for each uinstr ... */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4013 | for (i = 0; i < cb->used; i++) { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 4014 | UInstr* u = &cb->instrs[i]; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4015 | if (cb->instrs[i].opcode != NOP) { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 4016 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4017 | /* Check on the sanity of this insn. */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 4018 | Bool sane = VG_(saneUInstr)( False, False, u ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4019 | if (!sane) { |
| 4020 | VG_(printf)("\ninsane instruction\n"); |
njn | 4ba5a79 | 2002-09-30 10:23:54 +0000 | [diff] [blame] | 4021 | VG_(up_UInstr)( i, u ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4022 | } |
| 4023 | vg_assert(sane); |
sewardj | b5ff83e | 2002-12-01 19:40:49 +0000 | [diff] [blame] | 4024 | emitUInstr( cb, i, regs_live_before, |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 4025 | &sselive, &orig_eip, &curr_eip ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4026 | } |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 4027 | regs_live_before = u->regs_live_after; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4028 | } |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 4029 | if (dis) VG_(printf)("\n"); |
sewardj | b91ae7f | 2003-04-29 23:50:00 +0000 | [diff] [blame] | 4030 | vg_assert(!sselive); /* SSE state must be saved by end of BB */ |
sewardj | fa492d4 | 2002-12-08 18:20:01 +0000 | [diff] [blame] | 4031 | vg_assert(eflags_state != UPD_Real); /* flags can't just be in CPU */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4032 | |
sewardj | 22854b9 | 2002-11-30 14:00:47 +0000 | [diff] [blame] | 4033 | if (j != NULL) { |
| 4034 | vg_assert(jumpidx <= VG_MAX_JUMPS); |
| 4035 | for(i = 0; i < jumpidx; i++) |
| 4036 | j[i] = jumps[i]; |
| 4037 | } |
| 4038 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4039 | /* Returns a pointer to the emitted code. This will have to be |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 4040 | copied by the caller into the translation cache, and then freed */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4041 | *nbytes = emitted_code_used; |
| 4042 | return emitted_code; |
| 4043 | } |
| 4044 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 4045 | #undef dis |
| 4046 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4047 | /*--------------------------------------------------------------------*/ |
| 4048 | /*--- end vg_from_ucode.c ---*/ |
| 4049 | /*--------------------------------------------------------------------*/ |