sewardj | 7cf4e6b | 2008-05-01 20:24:26 +0000 | [diff] [blame] | 1 | |
| 2 | /*--------------------------------------------------------------------*/ |
| 3 | /*--- Contains machine-specific (guest-state-layout-specific) ---*/ |
| 4 | /*--- support for origin tracking. ---*/ |
| 5 | /*--- mc_machine.c ---*/ |
| 6 | /*--------------------------------------------------------------------*/ |
| 7 | |
| 8 | /* |
| 9 | This file is part of MemCheck, a heavyweight Valgrind tool for |
| 10 | detecting memory errors. |
| 11 | |
njn | 9f20746 | 2009-03-10 22:02:09 +0000 | [diff] [blame] | 12 | Copyright (C) 2008-2009 OpenWorks Ltd |
sewardj | 7cf4e6b | 2008-05-01 20:24:26 +0000 | [diff] [blame] | 13 | info@open-works.co.uk |
| 14 | |
| 15 | This program is free software; you can redistribute it and/or |
| 16 | modify it under the terms of the GNU General Public License as |
| 17 | published by the Free Software Foundation; either version 2 of the |
| 18 | License, or (at your option) any later version. |
| 19 | |
| 20 | This program is distributed in the hope that it will be useful, but |
| 21 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 23 | General Public License for more details. |
| 24 | |
| 25 | You should have received a copy of the GNU General Public License |
| 26 | along with this program; if not, write to the Free Software |
| 27 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 28 | 02111-1307, USA. |
| 29 | |
| 30 | The GNU General Public License is contained in the file COPYING. |
| 31 | |
| 32 | Neither the names of the U.S. Department of Energy nor the |
| 33 | University of California nor the names of its contributors may be |
| 34 | used to endorse or promote products derived from this software |
| 35 | without prior written permission. |
| 36 | */ |
| 37 | |
| 38 | #include "pub_tool_basics.h" |
| 39 | #include "pub_tool_hashtable.h" // For mc_include.h |
| 40 | #include "pub_tool_libcassert.h" |
| 41 | #include "pub_tool_libcprint.h" |
| 42 | #include "pub_tool_tooliface.h" |
| 43 | |
| 44 | #include "mc_include.h" |
| 45 | |
| 46 | #undef MC_SIZEOF_GUEST_STATE |
| 47 | |
| 48 | #if defined(VGA_x86) |
| 49 | # include "libvex_guest_x86.h" |
| 50 | # define MC_SIZEOF_GUEST_STATE sizeof(VexGuestX86State) |
| 51 | #endif |
| 52 | |
| 53 | #if defined(VGA_amd64) |
| 54 | # include "libvex_guest_amd64.h" |
| 55 | # define MC_SIZEOF_GUEST_STATE sizeof(VexGuestAMD64State) |
| 56 | #endif |
| 57 | |
| 58 | #if defined(VGA_ppc32) |
| 59 | # include "libvex_guest_ppc32.h" |
| 60 | # define MC_SIZEOF_GUEST_STATE sizeof(VexGuestPPC32State) |
| 61 | #endif |
| 62 | |
| 63 | #if defined(VGA_ppc64) |
| 64 | # include "libvex_guest_ppc64.h" |
| 65 | # define MC_SIZEOF_GUEST_STATE sizeof(VexGuestPPC64State) |
| 66 | #endif |
| 67 | |
| 68 | static inline Bool host_is_big_endian ( void ) { |
| 69 | UInt x = 0x11223344; |
| 70 | return 0x1122 == *(UShort*)(&x); |
| 71 | } |
| 72 | static inline Bool host_is_little_endian ( void ) { |
| 73 | UInt x = 0x11223344; |
| 74 | return 0x3344 == *(UShort*)(&x); |
| 75 | } |
| 76 | |
| 77 | |
| 78 | /* Let (offset,szB) describe a reference to the guest state section |
| 79 | [offset, offset+szB). |
| 80 | |
| 81 | This function returns the corresponding guest state reference to be |
| 82 | used for the origin tag (which of course will be in the second |
| 83 | shadow area), or -1 if this piece of guest state is not to be |
| 84 | tracked. |
| 85 | |
| 86 | Since origin tags are 32-bits long, we expect any returned value |
| 87 | (except -1) to be a multiple of 4, between 0 and |
| 88 | sizeof(guest-state)-4 inclusive. |
| 89 | |
| 90 | This is inherently (guest-)architecture specific. For x86 and |
| 91 | amd64 we do some somewhat tricky things to give %AH .. %DH their |
| 92 | own tags. On ppc32/64 we do some marginally tricky things to give |
| 93 | all 16 %CR components their own tags. |
| 94 | |
| 95 | This function only deals with references to the guest state whose |
| 96 | offsets are known at translation time (that is, references arising |
| 97 | from Put and Get). References whose offset is not known until run |
| 98 | time (that is, arise from PutI and GetI) are handled by |
| 99 | MC_(get_otrack_reg_array_equiv_int_type) below. |
| 100 | |
| 101 | Note that since some guest state arrays (eg, the x86 FP reg stack) |
| 102 | are accessed both as arrays (eg, x87 insns) and directly (eg, MMX |
| 103 | insns), the two functions must be consistent for those sections of |
| 104 | guest state -- that is, they must both say the area is shadowed, or |
| 105 | both say it is not. |
| 106 | |
| 107 | This function is dependent on the host's endianness, hence we |
| 108 | assert that the use case is supported. |
| 109 | */ |
| 110 | static Int get_otrack_shadow_offset_wrk ( Int offset, Int szB ); /*fwds*/ |
| 111 | |
| 112 | Int MC_(get_otrack_shadow_offset) ( Int offset, Int szB ) |
| 113 | { |
| 114 | Int cand = get_otrack_shadow_offset_wrk( offset, szB ); |
| 115 | if (cand == -1) |
| 116 | return cand; |
| 117 | tl_assert(0 == (cand & 3)); |
| 118 | tl_assert(cand <= MC_SIZEOF_GUEST_STATE-4); |
| 119 | return cand; |
| 120 | } |
| 121 | |
| 122 | |
| 123 | static Int get_otrack_shadow_offset_wrk ( Int offset, Int szB ) |
| 124 | { |
| 125 | /* -------------------- ppc64 -------------------- */ |
| 126 | |
| 127 | # if defined(VGA_ppc64) |
| 128 | |
| 129 | # define GOF(_fieldname) \ |
| 130 | (offsetof(VexGuestPPC64State,guest_##_fieldname)) |
| 131 | # define SZB(_fieldname) \ |
| 132 | (sizeof(((VexGuestPPC64State*)0)->guest_##_fieldname)) |
| 133 | |
| 134 | Int sz = szB; |
| 135 | Int o = offset; |
| 136 | tl_assert(sz > 0); |
| 137 | tl_assert(host_is_big_endian()); |
| 138 | |
| 139 | if (sz == 8 || sz == 4) { |
| 140 | /* The point of this is to achieve |
| 141 | if ((o == GOF(GPRn) && sz == 8) || (o == 4+GOF(GPRn) && sz == 4)) |
| 142 | return GOF(GPRn); |
| 143 | by testing ox instead of o, and setting ox back 4 bytes when sz == 4. |
| 144 | */ |
sewardj | 85857ab | 2008-05-06 15:40:32 +0000 | [diff] [blame] | 145 | Int ox = sz == 8 ? o : (o - 4); |
sewardj | 7cf4e6b | 2008-05-01 20:24:26 +0000 | [diff] [blame] | 146 | if (ox == GOF(GPR0)) return ox; |
| 147 | if (ox == GOF(GPR1)) return ox; |
| 148 | if (ox == GOF(GPR2)) return ox; |
| 149 | if (ox == GOF(GPR3)) return ox; |
| 150 | if (ox == GOF(GPR4)) return ox; |
| 151 | if (ox == GOF(GPR5)) return ox; |
| 152 | if (ox == GOF(GPR6)) return ox; |
| 153 | if (ox == GOF(GPR7)) return ox; |
| 154 | if (ox == GOF(GPR8)) return ox; |
| 155 | if (ox == GOF(GPR9)) return ox; |
| 156 | if (ox == GOF(GPR10)) return ox; |
| 157 | if (ox == GOF(GPR11)) return ox; |
| 158 | if (ox == GOF(GPR12)) return ox; |
| 159 | if (ox == GOF(GPR13)) return ox; |
| 160 | if (ox == GOF(GPR14)) return ox; |
| 161 | if (ox == GOF(GPR15)) return ox; |
| 162 | if (ox == GOF(GPR16)) return ox; |
| 163 | if (ox == GOF(GPR17)) return ox; |
| 164 | if (ox == GOF(GPR18)) return ox; |
| 165 | if (ox == GOF(GPR19)) return ox; |
| 166 | if (ox == GOF(GPR20)) return ox; |
| 167 | if (ox == GOF(GPR21)) return ox; |
| 168 | if (ox == GOF(GPR22)) return ox; |
| 169 | if (ox == GOF(GPR23)) return ox; |
| 170 | if (ox == GOF(GPR24)) return ox; |
| 171 | if (ox == GOF(GPR25)) return ox; |
| 172 | if (ox == GOF(GPR26)) return ox; |
| 173 | if (ox == GOF(GPR27)) return ox; |
| 174 | if (ox == GOF(GPR28)) return ox; |
| 175 | if (ox == GOF(GPR29)) return ox; |
| 176 | if (ox == GOF(GPR30)) return ox; |
| 177 | if (ox == GOF(GPR31)) return ox; |
| 178 | } |
| 179 | |
| 180 | if (o == GOF(LR) && sz == 8) return o; |
| 181 | if (o == GOF(CTR) && sz == 8) return o; |
| 182 | |
| 183 | if (o == GOF(CIA) && sz == 8) return -1; |
sewardj | 71633b1 | 2009-03-30 02:27:29 +0000 | [diff] [blame] | 184 | if (o == GOF(IP_AT_SYSCALL) && sz == 8) return -1; /* slot unused */ |
sewardj | 7cf4e6b | 2008-05-01 20:24:26 +0000 | [diff] [blame] | 185 | if (o == GOF(RESVN) && sz == 8) return -1; |
| 186 | if (o == GOF(FPROUND) && sz == 4) return -1; |
| 187 | if (o == GOF(EMWARN) && sz == 4) return -1; |
| 188 | if (o == GOF(TISTART) && sz == 8) return -1; |
| 189 | if (o == GOF(TILEN) && sz == 8) return -1; |
| 190 | if (o == GOF(VSCR) && sz == 4) return -1; |
| 191 | if (o == GOF(VRSAVE) && sz == 4) return -1; |
| 192 | if (o == GOF(REDIR_SP) && sz == 8) return -1; |
| 193 | |
| 194 | tl_assert(SZB(FPR0) == 8); |
| 195 | if (o == GOF(FPR0) && sz == 8) return o; |
| 196 | if (o == GOF(FPR1) && sz == 8) return o; |
| 197 | if (o == GOF(FPR2) && sz == 8) return o; |
| 198 | if (o == GOF(FPR3) && sz == 8) return o; |
| 199 | if (o == GOF(FPR4) && sz == 8) return o; |
| 200 | if (o == GOF(FPR5) && sz == 8) return o; |
| 201 | if (o == GOF(FPR6) && sz == 8) return o; |
| 202 | if (o == GOF(FPR7) && sz == 8) return o; |
| 203 | if (o == GOF(FPR8) && sz == 8) return o; |
| 204 | if (o == GOF(FPR9) && sz == 8) return o; |
| 205 | if (o == GOF(FPR10) && sz == 8) return o; |
| 206 | if (o == GOF(FPR11) && sz == 8) return o; |
| 207 | if (o == GOF(FPR12) && sz == 8) return o; |
| 208 | if (o == GOF(FPR13) && sz == 8) return o; |
| 209 | if (o == GOF(FPR14) && sz == 8) return o; |
| 210 | if (o == GOF(FPR15) && sz == 8) return o; |
| 211 | if (o == GOF(FPR16) && sz == 8) return o; |
| 212 | if (o == GOF(FPR17) && sz == 8) return o; |
| 213 | if (o == GOF(FPR18) && sz == 8) return o; |
| 214 | if (o == GOF(FPR19) && sz == 8) return o; |
| 215 | if (o == GOF(FPR20) && sz == 8) return o; |
| 216 | if (o == GOF(FPR21) && sz == 8) return o; |
| 217 | if (o == GOF(FPR22) && sz == 8) return o; |
| 218 | if (o == GOF(FPR23) && sz == 8) return o; |
| 219 | if (o == GOF(FPR24) && sz == 8) return o; |
| 220 | if (o == GOF(FPR25) && sz == 8) return o; |
| 221 | if (o == GOF(FPR26) && sz == 8) return o; |
| 222 | if (o == GOF(FPR27) && sz == 8) return o; |
| 223 | if (o == GOF(FPR28) && sz == 8) return o; |
| 224 | if (o == GOF(FPR29) && sz == 8) return o; |
| 225 | if (o == GOF(FPR30) && sz == 8) return o; |
| 226 | if (o == GOF(FPR31) && sz == 8) return o; |
| 227 | |
| 228 | /* For the various byte sized XER/CR pieces, use offset 8 |
| 229 | in VR0 .. VR31. */ |
| 230 | tl_assert(SZB(VR0) == 16); |
| 231 | if (o == GOF(XER_SO) && sz == 1) return 8 +GOF(VR0); |
| 232 | if (o == GOF(XER_OV) && sz == 1) return 8 +GOF(VR1); |
| 233 | if (o == GOF(XER_CA) && sz == 1) return 8 +GOF(VR2); |
| 234 | if (o == GOF(XER_BC) && sz == 1) return 8 +GOF(VR3); |
| 235 | |
| 236 | if (o == GOF(CR0_321) && sz == 1) return 8 +GOF(VR4); |
| 237 | if (o == GOF(CR0_0) && sz == 1) return 8 +GOF(VR5); |
| 238 | if (o == GOF(CR1_321) && sz == 1) return 8 +GOF(VR6); |
| 239 | if (o == GOF(CR1_0) && sz == 1) return 8 +GOF(VR7); |
| 240 | if (o == GOF(CR2_321) && sz == 1) return 8 +GOF(VR8); |
| 241 | if (o == GOF(CR2_0) && sz == 1) return 8 +GOF(VR9); |
| 242 | if (o == GOF(CR3_321) && sz == 1) return 8 +GOF(VR10); |
| 243 | if (o == GOF(CR3_0) && sz == 1) return 8 +GOF(VR11); |
| 244 | if (o == GOF(CR4_321) && sz == 1) return 8 +GOF(VR12); |
| 245 | if (o == GOF(CR4_0) && sz == 1) return 8 +GOF(VR13); |
| 246 | if (o == GOF(CR5_321) && sz == 1) return 8 +GOF(VR14); |
| 247 | if (o == GOF(CR5_0) && sz == 1) return 8 +GOF(VR15); |
| 248 | if (o == GOF(CR6_321) && sz == 1) return 8 +GOF(VR16); |
| 249 | if (o == GOF(CR6_0) && sz == 1) return 8 +GOF(VR17); |
| 250 | if (o == GOF(CR7_321) && sz == 1) return 8 +GOF(VR18); |
| 251 | if (o == GOF(CR7_0) && sz == 1) return 8 +GOF(VR19); |
| 252 | |
| 253 | /* Vector registers .. use offset 0 in VR0 .. VR31. */ |
| 254 | if (o >= GOF(VR0) && o+sz <= GOF(VR0) +SZB(VR0)) return 0+ GOF(VR0); |
| 255 | if (o >= GOF(VR1) && o+sz <= GOF(VR1) +SZB(VR1)) return 0+ GOF(VR1); |
| 256 | if (o >= GOF(VR2) && o+sz <= GOF(VR2) +SZB(VR2)) return 0+ GOF(VR2); |
| 257 | if (o >= GOF(VR3) && o+sz <= GOF(VR3) +SZB(VR3)) return 0+ GOF(VR3); |
| 258 | if (o >= GOF(VR4) && o+sz <= GOF(VR4) +SZB(VR4)) return 0+ GOF(VR4); |
| 259 | if (o >= GOF(VR5) && o+sz <= GOF(VR5) +SZB(VR5)) return 0+ GOF(VR5); |
| 260 | if (o >= GOF(VR6) && o+sz <= GOF(VR6) +SZB(VR6)) return 0+ GOF(VR6); |
| 261 | if (o >= GOF(VR7) && o+sz <= GOF(VR7) +SZB(VR7)) return 0+ GOF(VR7); |
| 262 | if (o >= GOF(VR8) && o+sz <= GOF(VR8) +SZB(VR8)) return 0+ GOF(VR8); |
| 263 | if (o >= GOF(VR9) && o+sz <= GOF(VR9) +SZB(VR9)) return 0+ GOF(VR9); |
| 264 | if (o >= GOF(VR10) && o+sz <= GOF(VR10)+SZB(VR10)) return 0+ GOF(VR10); |
| 265 | if (o >= GOF(VR11) && o+sz <= GOF(VR11)+SZB(VR11)) return 0+ GOF(VR11); |
| 266 | if (o >= GOF(VR12) && o+sz <= GOF(VR12)+SZB(VR12)) return 0+ GOF(VR12); |
| 267 | if (o >= GOF(VR13) && o+sz <= GOF(VR13)+SZB(VR13)) return 0+ GOF(VR13); |
| 268 | if (o >= GOF(VR14) && o+sz <= GOF(VR14)+SZB(VR14)) return 0+ GOF(VR14); |
| 269 | if (o >= GOF(VR15) && o+sz <= GOF(VR15)+SZB(VR15)) return 0+ GOF(VR15); |
| 270 | if (o >= GOF(VR16) && o+sz <= GOF(VR16)+SZB(VR16)) return 0+ GOF(VR16); |
| 271 | if (o >= GOF(VR17) && o+sz <= GOF(VR17)+SZB(VR17)) return 0+ GOF(VR17); |
| 272 | if (o >= GOF(VR18) && o+sz <= GOF(VR18)+SZB(VR18)) return 0+ GOF(VR18); |
| 273 | if (o >= GOF(VR19) && o+sz <= GOF(VR19)+SZB(VR19)) return 0+ GOF(VR19); |
| 274 | if (o >= GOF(VR20) && o+sz <= GOF(VR20)+SZB(VR20)) return 0+ GOF(VR20); |
| 275 | if (o >= GOF(VR21) && o+sz <= GOF(VR21)+SZB(VR21)) return 0+ GOF(VR21); |
| 276 | if (o >= GOF(VR22) && o+sz <= GOF(VR22)+SZB(VR22)) return 0+ GOF(VR22); |
| 277 | if (o >= GOF(VR23) && o+sz <= GOF(VR23)+SZB(VR23)) return 0+ GOF(VR23); |
| 278 | if (o >= GOF(VR24) && o+sz <= GOF(VR24)+SZB(VR24)) return 0+ GOF(VR24); |
| 279 | if (o >= GOF(VR25) && o+sz <= GOF(VR25)+SZB(VR25)) return 0+ GOF(VR25); |
| 280 | if (o >= GOF(VR26) && o+sz <= GOF(VR26)+SZB(VR26)) return 0+ GOF(VR26); |
| 281 | if (o >= GOF(VR27) && o+sz <= GOF(VR27)+SZB(VR27)) return 0+ GOF(VR27); |
| 282 | if (o >= GOF(VR28) && o+sz <= GOF(VR28)+SZB(VR28)) return 0+ GOF(VR28); |
| 283 | if (o >= GOF(VR29) && o+sz <= GOF(VR29)+SZB(VR29)) return 0+ GOF(VR29); |
| 284 | if (o >= GOF(VR30) && o+sz <= GOF(VR30)+SZB(VR30)) return 0+ GOF(VR30); |
| 285 | if (o >= GOF(VR31) && o+sz <= GOF(VR31)+SZB(VR31)) return 0+ GOF(VR31); |
| 286 | |
| 287 | VG_(printf)("MC_(get_otrack_shadow_offset)(ppc64)(off=%d,sz=%d)\n", |
| 288 | offset,szB); |
| 289 | tl_assert(0); |
| 290 | # undef GOF |
| 291 | # undef SZB |
| 292 | |
| 293 | /* -------------------- ppc32 -------------------- */ |
| 294 | |
| 295 | # elif defined(VGA_ppc32) |
| 296 | |
| 297 | # define GOF(_fieldname) \ |
| 298 | (offsetof(VexGuestPPC32State,guest_##_fieldname)) |
| 299 | # define SZB(_fieldname) \ |
| 300 | (sizeof(((VexGuestPPC32State*)0)->guest_##_fieldname)) |
| 301 | Int o = offset; |
| 302 | Int sz = szB; |
| 303 | tl_assert(sz > 0); |
| 304 | tl_assert(host_is_big_endian()); |
| 305 | |
| 306 | if (o == GOF(GPR0) && sz == 4) return o; |
| 307 | if (o == GOF(GPR1) && sz == 4) return o; |
| 308 | if (o == GOF(GPR2) && sz == 4) return o; |
| 309 | if (o == GOF(GPR3) && sz == 4) return o; |
| 310 | if (o == GOF(GPR4) && sz == 4) return o; |
| 311 | if (o == GOF(GPR5) && sz == 4) return o; |
| 312 | if (o == GOF(GPR6) && sz == 4) return o; |
| 313 | if (o == GOF(GPR7) && sz == 4) return o; |
| 314 | if (o == GOF(GPR8) && sz == 4) return o; |
| 315 | if (o == GOF(GPR9) && sz == 4) return o; |
| 316 | if (o == GOF(GPR10) && sz == 4) return o; |
| 317 | if (o == GOF(GPR11) && sz == 4) return o; |
| 318 | if (o == GOF(GPR12) && sz == 4) return o; |
| 319 | if (o == GOF(GPR13) && sz == 4) return o; |
| 320 | if (o == GOF(GPR14) && sz == 4) return o; |
| 321 | if (o == GOF(GPR15) && sz == 4) return o; |
| 322 | if (o == GOF(GPR16) && sz == 4) return o; |
| 323 | if (o == GOF(GPR17) && sz == 4) return o; |
| 324 | if (o == GOF(GPR18) && sz == 4) return o; |
| 325 | if (o == GOF(GPR19) && sz == 4) return o; |
| 326 | if (o == GOF(GPR20) && sz == 4) return o; |
| 327 | if (o == GOF(GPR21) && sz == 4) return o; |
| 328 | if (o == GOF(GPR22) && sz == 4) return o; |
| 329 | if (o == GOF(GPR23) && sz == 4) return o; |
| 330 | if (o == GOF(GPR24) && sz == 4) return o; |
| 331 | if (o == GOF(GPR25) && sz == 4) return o; |
| 332 | if (o == GOF(GPR26) && sz == 4) return o; |
| 333 | if (o == GOF(GPR27) && sz == 4) return o; |
| 334 | if (o == GOF(GPR28) && sz == 4) return o; |
| 335 | if (o == GOF(GPR29) && sz == 4) return o; |
| 336 | if (o == GOF(GPR30) && sz == 4) return o; |
| 337 | if (o == GOF(GPR31) && sz == 4) return o; |
| 338 | |
| 339 | if (o == GOF(LR) && sz == 4) return o; |
| 340 | if (o == GOF(CTR) && sz == 4) return o; |
| 341 | |
| 342 | if (o == GOF(CIA) && sz == 4) return -1; |
sewardj | 71633b1 | 2009-03-30 02:27:29 +0000 | [diff] [blame] | 343 | if (o == GOF(IP_AT_SYSCALL) && sz == 4) return -1; /* slot unused */ |
sewardj | 7cf4e6b | 2008-05-01 20:24:26 +0000 | [diff] [blame] | 344 | if (o == GOF(RESVN) && sz == 4) return -1; |
| 345 | if (o == GOF(FPROUND) && sz == 4) return -1; |
sewardj | 3b50735 | 2009-02-14 15:28:46 +0000 | [diff] [blame] | 346 | if (o == GOF(VRSAVE) && sz == 4) return -1; |
sewardj | 7cf4e6b | 2008-05-01 20:24:26 +0000 | [diff] [blame] | 347 | if (o == GOF(EMWARN) && sz == 4) return -1; |
| 348 | if (o == GOF(TISTART) && sz == 4) return -1; |
| 349 | if (o == GOF(TILEN) && sz == 4) return -1; |
| 350 | if (o == GOF(VSCR) && sz == 4) return -1; |
| 351 | if (o == GOF(REDIR_SP) && sz == 4) return -1; |
| 352 | if (o == GOF(SPRG3_RO) && sz == 4) return -1; |
| 353 | |
| 354 | tl_assert(SZB(FPR0) == 8); |
| 355 | if (o == GOF(FPR0) && sz == 8) return o; |
| 356 | if (o == GOF(FPR1) && sz == 8) return o; |
| 357 | if (o == GOF(FPR2) && sz == 8) return o; |
| 358 | if (o == GOF(FPR3) && sz == 8) return o; |
| 359 | if (o == GOF(FPR4) && sz == 8) return o; |
| 360 | if (o == GOF(FPR5) && sz == 8) return o; |
| 361 | if (o == GOF(FPR6) && sz == 8) return o; |
| 362 | if (o == GOF(FPR7) && sz == 8) return o; |
| 363 | if (o == GOF(FPR8) && sz == 8) return o; |
| 364 | if (o == GOF(FPR9) && sz == 8) return o; |
| 365 | if (o == GOF(FPR10) && sz == 8) return o; |
| 366 | if (o == GOF(FPR11) && sz == 8) return o; |
| 367 | if (o == GOF(FPR12) && sz == 8) return o; |
| 368 | if (o == GOF(FPR13) && sz == 8) return o; |
| 369 | if (o == GOF(FPR14) && sz == 8) return o; |
| 370 | if (o == GOF(FPR15) && sz == 8) return o; |
| 371 | if (o == GOF(FPR16) && sz == 8) return o; |
| 372 | if (o == GOF(FPR17) && sz == 8) return o; |
| 373 | if (o == GOF(FPR18) && sz == 8) return o; |
| 374 | if (o == GOF(FPR19) && sz == 8) return o; |
| 375 | if (o == GOF(FPR20) && sz == 8) return o; |
| 376 | if (o == GOF(FPR21) && sz == 8) return o; |
| 377 | if (o == GOF(FPR22) && sz == 8) return o; |
| 378 | if (o == GOF(FPR23) && sz == 8) return o; |
| 379 | if (o == GOF(FPR24) && sz == 8) return o; |
| 380 | if (o == GOF(FPR25) && sz == 8) return o; |
| 381 | if (o == GOF(FPR26) && sz == 8) return o; |
| 382 | if (o == GOF(FPR27) && sz == 8) return o; |
| 383 | if (o == GOF(FPR28) && sz == 8) return o; |
| 384 | if (o == GOF(FPR29) && sz == 8) return o; |
| 385 | if (o == GOF(FPR30) && sz == 8) return o; |
| 386 | if (o == GOF(FPR31) && sz == 8) return o; |
| 387 | |
| 388 | /* For the various byte sized XER/CR pieces, use offset 8 |
| 389 | in VR0 .. VR31. */ |
| 390 | tl_assert(SZB(VR0) == 16); |
| 391 | if (o == GOF(XER_SO) && sz == 1) return 8 +GOF(VR0); |
| 392 | if (o == GOF(XER_OV) && sz == 1) return 8 +GOF(VR1); |
| 393 | if (o == GOF(XER_CA) && sz == 1) return 8 +GOF(VR2); |
| 394 | if (o == GOF(XER_BC) && sz == 1) return 8 +GOF(VR3); |
| 395 | |
| 396 | if (o == GOF(CR0_321) && sz == 1) return 8 +GOF(VR4); |
| 397 | if (o == GOF(CR0_0) && sz == 1) return 8 +GOF(VR5); |
| 398 | if (o == GOF(CR1_321) && sz == 1) return 8 +GOF(VR6); |
| 399 | if (o == GOF(CR1_0) && sz == 1) return 8 +GOF(VR7); |
| 400 | if (o == GOF(CR2_321) && sz == 1) return 8 +GOF(VR8); |
| 401 | if (o == GOF(CR2_0) && sz == 1) return 8 +GOF(VR9); |
| 402 | if (o == GOF(CR3_321) && sz == 1) return 8 +GOF(VR10); |
| 403 | if (o == GOF(CR3_0) && sz == 1) return 8 +GOF(VR11); |
| 404 | if (o == GOF(CR4_321) && sz == 1) return 8 +GOF(VR12); |
| 405 | if (o == GOF(CR4_0) && sz == 1) return 8 +GOF(VR13); |
| 406 | if (o == GOF(CR5_321) && sz == 1) return 8 +GOF(VR14); |
| 407 | if (o == GOF(CR5_0) && sz == 1) return 8 +GOF(VR15); |
| 408 | if (o == GOF(CR6_321) && sz == 1) return 8 +GOF(VR16); |
| 409 | if (o == GOF(CR6_0) && sz == 1) return 8 +GOF(VR17); |
| 410 | if (o == GOF(CR7_321) && sz == 1) return 8 +GOF(VR18); |
| 411 | if (o == GOF(CR7_0) && sz == 1) return 8 +GOF(VR19); |
| 412 | |
| 413 | /* Vector registers .. use offset 0 in VR0 .. VR31. */ |
| 414 | if (o >= GOF(VR0) && o+sz <= GOF(VR0) +SZB(VR0)) return 0+ GOF(VR0); |
| 415 | if (o >= GOF(VR1) && o+sz <= GOF(VR1) +SZB(VR1)) return 0+ GOF(VR1); |
| 416 | if (o >= GOF(VR2) && o+sz <= GOF(VR2) +SZB(VR2)) return 0+ GOF(VR2); |
| 417 | if (o >= GOF(VR3) && o+sz <= GOF(VR3) +SZB(VR3)) return 0+ GOF(VR3); |
| 418 | if (o >= GOF(VR4) && o+sz <= GOF(VR4) +SZB(VR4)) return 0+ GOF(VR4); |
| 419 | if (o >= GOF(VR5) && o+sz <= GOF(VR5) +SZB(VR5)) return 0+ GOF(VR5); |
| 420 | if (o >= GOF(VR6) && o+sz <= GOF(VR6) +SZB(VR6)) return 0+ GOF(VR6); |
| 421 | if (o >= GOF(VR7) && o+sz <= GOF(VR7) +SZB(VR7)) return 0+ GOF(VR7); |
| 422 | if (o >= GOF(VR8) && o+sz <= GOF(VR8) +SZB(VR8)) return 0+ GOF(VR8); |
| 423 | if (o >= GOF(VR9) && o+sz <= GOF(VR9) +SZB(VR9)) return 0+ GOF(VR9); |
| 424 | if (o >= GOF(VR10) && o+sz <= GOF(VR10)+SZB(VR10)) return 0+ GOF(VR10); |
| 425 | if (o >= GOF(VR11) && o+sz <= GOF(VR11)+SZB(VR11)) return 0+ GOF(VR11); |
| 426 | if (o >= GOF(VR12) && o+sz <= GOF(VR12)+SZB(VR12)) return 0+ GOF(VR12); |
| 427 | if (o >= GOF(VR13) && o+sz <= GOF(VR13)+SZB(VR13)) return 0+ GOF(VR13); |
| 428 | if (o >= GOF(VR14) && o+sz <= GOF(VR14)+SZB(VR14)) return 0+ GOF(VR14); |
| 429 | if (o >= GOF(VR15) && o+sz <= GOF(VR15)+SZB(VR15)) return 0+ GOF(VR15); |
| 430 | if (o >= GOF(VR16) && o+sz <= GOF(VR16)+SZB(VR16)) return 0+ GOF(VR16); |
| 431 | if (o >= GOF(VR17) && o+sz <= GOF(VR17)+SZB(VR17)) return 0+ GOF(VR17); |
| 432 | if (o >= GOF(VR18) && o+sz <= GOF(VR18)+SZB(VR18)) return 0+ GOF(VR18); |
| 433 | if (o >= GOF(VR19) && o+sz <= GOF(VR19)+SZB(VR19)) return 0+ GOF(VR19); |
| 434 | if (o >= GOF(VR20) && o+sz <= GOF(VR20)+SZB(VR20)) return 0+ GOF(VR20); |
| 435 | if (o >= GOF(VR21) && o+sz <= GOF(VR21)+SZB(VR21)) return 0+ GOF(VR21); |
| 436 | if (o >= GOF(VR22) && o+sz <= GOF(VR22)+SZB(VR22)) return 0+ GOF(VR22); |
| 437 | if (o >= GOF(VR23) && o+sz <= GOF(VR23)+SZB(VR23)) return 0+ GOF(VR23); |
| 438 | if (o >= GOF(VR24) && o+sz <= GOF(VR24)+SZB(VR24)) return 0+ GOF(VR24); |
| 439 | if (o >= GOF(VR25) && o+sz <= GOF(VR25)+SZB(VR25)) return 0+ GOF(VR25); |
| 440 | if (o >= GOF(VR26) && o+sz <= GOF(VR26)+SZB(VR26)) return 0+ GOF(VR26); |
| 441 | if (o >= GOF(VR27) && o+sz <= GOF(VR27)+SZB(VR27)) return 0+ GOF(VR27); |
| 442 | if (o >= GOF(VR28) && o+sz <= GOF(VR28)+SZB(VR28)) return 0+ GOF(VR28); |
| 443 | if (o >= GOF(VR29) && o+sz <= GOF(VR29)+SZB(VR29)) return 0+ GOF(VR29); |
| 444 | if (o >= GOF(VR30) && o+sz <= GOF(VR30)+SZB(VR30)) return 0+ GOF(VR30); |
| 445 | if (o >= GOF(VR31) && o+sz <= GOF(VR31)+SZB(VR31)) return 0+ GOF(VR31); |
| 446 | |
| 447 | VG_(printf)("MC_(get_otrack_shadow_offset)(ppc32)(off=%d,sz=%d)\n", |
| 448 | offset,szB); |
| 449 | tl_assert(0); |
| 450 | # undef GOF |
| 451 | # undef SZB |
| 452 | |
| 453 | /* -------------------- amd64 -------------------- */ |
| 454 | |
| 455 | # elif defined(VGA_amd64) |
| 456 | |
| 457 | # define GOF(_fieldname) \ |
| 458 | (offsetof(VexGuestAMD64State,guest_##_fieldname)) |
| 459 | # define SZB(_fieldname) \ |
| 460 | (sizeof(((VexGuestAMD64State*)0)->guest_##_fieldname)) |
| 461 | Int o = offset; |
| 462 | Int sz = szB; |
| 463 | Bool is1248 = sz == 8 || sz == 4 || sz == 2 || sz == 1; |
| 464 | tl_assert(sz > 0); |
| 465 | tl_assert(host_is_little_endian()); |
| 466 | |
| 467 | if (o == GOF(RAX) && is1248) return o; |
| 468 | if (o == GOF(RCX) && is1248) return o; |
| 469 | if (o == GOF(RDX) && is1248) return o; |
| 470 | if (o == GOF(RBX) && is1248) return o; |
| 471 | if (o == GOF(RSP) && is1248) return o; |
| 472 | if (o == GOF(RBP) && is1248) return o; |
| 473 | if (o == GOF(RSI) && is1248) return o; |
| 474 | if (o == GOF(RDI) && is1248) return o; |
| 475 | if (o == GOF(R8) && is1248) return o; |
| 476 | if (o == GOF(R9) && is1248) return o; |
| 477 | if (o == GOF(R10) && is1248) return o; |
| 478 | if (o == GOF(R11) && is1248) return o; |
| 479 | if (o == GOF(R12) && is1248) return o; |
| 480 | if (o == GOF(R13) && is1248) return o; |
| 481 | if (o == GOF(R14) && is1248) return o; |
| 482 | if (o == GOF(R15) && is1248) return o; |
| 483 | |
| 484 | if (o == GOF(CC_DEP1) && sz == 8) return o; |
| 485 | if (o == GOF(CC_DEP2) && sz == 8) return o; |
| 486 | |
| 487 | if (o == GOF(CC_OP) && sz == 8) return -1; /* slot used for %AH */ |
| 488 | if (o == GOF(CC_NDEP) && sz == 8) return -1; /* slot used for %BH */ |
| 489 | if (o == GOF(DFLAG) && sz == 8) return -1; /* slot used for %CH */ |
| 490 | if (o == GOF(RIP) && sz == 8) return -1; /* slot unused */ |
sewardj | 71633b1 | 2009-03-30 02:27:29 +0000 | [diff] [blame] | 491 | if (o == GOF(IP_AT_SYSCALL) && sz == 8) return -1; /* slot unused */ |
sewardj | 7cf4e6b | 2008-05-01 20:24:26 +0000 | [diff] [blame] | 492 | if (o == GOF(IDFLAG) && sz == 8) return -1; /* slot used for %DH */ |
| 493 | if (o == GOF(FS_ZERO) && sz == 8) return -1; /* slot unused */ |
sewardj | 105e69c | 2008-05-09 23:26:19 +0000 | [diff] [blame] | 494 | if (o == GOF(TISTART) && sz == 8) return -1; /* slot unused */ |
| 495 | if (o == GOF(TILEN) && sz == 8) return -1; /* slot unused */ |
sewardj | 7cf4e6b | 2008-05-01 20:24:26 +0000 | [diff] [blame] | 496 | |
| 497 | /* Treat %AH, %BH, %CH, %DH as independent registers. To do this |
| 498 | requires finding 4 unused 32-bit slots in the second-shadow |
| 499 | guest state, respectively: CC_OP CC_NDEP DFLAG IDFLAG, since |
| 500 | none of those are tracked. */ |
| 501 | tl_assert(SZB(CC_OP) == 8); |
| 502 | tl_assert(SZB(CC_NDEP) == 8); |
| 503 | tl_assert(SZB(IDFLAG) == 8); |
| 504 | tl_assert(SZB(DFLAG) == 8); |
| 505 | |
| 506 | if (o == 1+ GOF(RAX) && szB == 1) return GOF(CC_OP); |
| 507 | if (o == 1+ GOF(RBX) && szB == 1) return GOF(CC_NDEP); |
| 508 | if (o == 1+ GOF(RCX) && szB == 1) return GOF(DFLAG); |
| 509 | if (o == 1+ GOF(RDX) && szB == 1) return GOF(IDFLAG); |
| 510 | |
| 511 | /* skip XMM and FP admin stuff */ |
| 512 | if (o == GOF(SSEROUND) && szB == 8) return -1; |
| 513 | if (o == GOF(FTOP) && szB == 4) return -1; |
| 514 | if (o == GOF(FPROUND) && szB == 8) return -1; |
| 515 | if (o == GOF(EMWARN) && szB == 4) return -1; |
sewardj | 89ea7ab | 2008-05-27 16:08:24 +0000 | [diff] [blame] | 516 | if (o == GOF(FC3210) && szB == 8) return -1; |
sewardj | 7cf4e6b | 2008-05-01 20:24:26 +0000 | [diff] [blame] | 517 | |
| 518 | /* XMM registers */ |
| 519 | if (o >= GOF(XMM0) && o+sz <= GOF(XMM0) +SZB(XMM0)) return GOF(XMM0); |
| 520 | if (o >= GOF(XMM1) && o+sz <= GOF(XMM1) +SZB(XMM1)) return GOF(XMM1); |
| 521 | if (o >= GOF(XMM2) && o+sz <= GOF(XMM2) +SZB(XMM2)) return GOF(XMM2); |
| 522 | if (o >= GOF(XMM3) && o+sz <= GOF(XMM3) +SZB(XMM3)) return GOF(XMM3); |
| 523 | if (o >= GOF(XMM4) && o+sz <= GOF(XMM4) +SZB(XMM4)) return GOF(XMM4); |
| 524 | if (o >= GOF(XMM5) && o+sz <= GOF(XMM5) +SZB(XMM5)) return GOF(XMM5); |
| 525 | if (o >= GOF(XMM6) && o+sz <= GOF(XMM6) +SZB(XMM6)) return GOF(XMM6); |
| 526 | if (o >= GOF(XMM7) && o+sz <= GOF(XMM7) +SZB(XMM7)) return GOF(XMM7); |
| 527 | if (o >= GOF(XMM8) && o+sz <= GOF(XMM8) +SZB(XMM8)) return GOF(XMM8); |
| 528 | if (o >= GOF(XMM9) && o+sz <= GOF(XMM9) +SZB(XMM9)) return GOF(XMM9); |
| 529 | if (o >= GOF(XMM10) && o+sz <= GOF(XMM10)+SZB(XMM10)) return GOF(XMM10); |
| 530 | if (o >= GOF(XMM11) && o+sz <= GOF(XMM11)+SZB(XMM11)) return GOF(XMM11); |
| 531 | if (o >= GOF(XMM12) && o+sz <= GOF(XMM12)+SZB(XMM12)) return GOF(XMM12); |
| 532 | if (o >= GOF(XMM13) && o+sz <= GOF(XMM13)+SZB(XMM13)) return GOF(XMM13); |
| 533 | if (o >= GOF(XMM14) && o+sz <= GOF(XMM14)+SZB(XMM14)) return GOF(XMM14); |
| 534 | if (o >= GOF(XMM15) && o+sz <= GOF(XMM15)+SZB(XMM15)) return GOF(XMM15); |
| 535 | |
sewardj | f1a483a | 2008-06-13 07:44:02 +0000 | [diff] [blame] | 536 | /* MMX accesses to FP regs. Need to allow for 32-bit references |
| 537 | due to dirty helpers for frstor etc, which reference the entire |
| 538 | 64-byte block in one go. */ |
| 539 | if (o >= GOF(FPREG[0]) |
| 540 | && o+sz <= GOF(FPREG[0])+SZB(FPREG[0])) return GOF(FPREG[0]); |
| 541 | if (o >= GOF(FPREG[1]) |
| 542 | && o+sz <= GOF(FPREG[1])+SZB(FPREG[1])) return GOF(FPREG[1]); |
| 543 | if (o >= GOF(FPREG[2]) |
| 544 | && o+sz <= GOF(FPREG[2])+SZB(FPREG[2])) return GOF(FPREG[2]); |
| 545 | if (o >= GOF(FPREG[3]) |
| 546 | && o+sz <= GOF(FPREG[3])+SZB(FPREG[3])) return GOF(FPREG[3]); |
| 547 | if (o >= GOF(FPREG[4]) |
| 548 | && o+sz <= GOF(FPREG[4])+SZB(FPREG[4])) return GOF(FPREG[4]); |
| 549 | if (o >= GOF(FPREG[5]) |
| 550 | && o+sz <= GOF(FPREG[5])+SZB(FPREG[5])) return GOF(FPREG[5]); |
| 551 | if (o >= GOF(FPREG[6]) |
| 552 | && o+sz <= GOF(FPREG[6])+SZB(FPREG[6])) return GOF(FPREG[6]); |
| 553 | if (o >= GOF(FPREG[7]) |
| 554 | && o+sz <= GOF(FPREG[7])+SZB(FPREG[7])) return GOF(FPREG[7]); |
sewardj | 7cf4e6b | 2008-05-01 20:24:26 +0000 | [diff] [blame] | 555 | |
| 556 | /* Map high halves of %RAX,%RCX,%RDX,%RBX to the whole register. |
| 557 | This is needed because the general handling of dirty helper |
| 558 | calls is done in 4 byte chunks. Hence we will see these. |
| 559 | Currently we only expect to see artefacts from CPUID. */ |
| 560 | if (o == 4+ GOF(RAX) && sz == 4) return GOF(RAX); |
| 561 | if (o == 4+ GOF(RCX) && sz == 4) return GOF(RCX); |
| 562 | if (o == 4+ GOF(RDX) && sz == 4) return GOF(RDX); |
| 563 | if (o == 4+ GOF(RBX) && sz == 4) return GOF(RBX); |
| 564 | |
| 565 | VG_(printf)("MC_(get_otrack_shadow_offset)(amd64)(off=%d,sz=%d)\n", |
| 566 | offset,szB); |
| 567 | tl_assert(0); |
| 568 | # undef GOF |
| 569 | # undef SZB |
| 570 | |
| 571 | /* --------------------- x86 --------------------- */ |
| 572 | |
| 573 | # elif defined(VGA_x86) |
| 574 | |
| 575 | # define GOF(_fieldname) \ |
| 576 | (offsetof(VexGuestX86State,guest_##_fieldname)) |
| 577 | # define SZB(_fieldname) \ |
| 578 | (sizeof(((VexGuestX86State*)0)->guest_##_fieldname)) |
| 579 | |
| 580 | Int o = offset; |
| 581 | Int sz = szB; |
| 582 | Bool is124 = sz == 4 || sz == 2 || sz == 1; |
| 583 | tl_assert(sz > 0); |
| 584 | tl_assert(host_is_little_endian()); |
| 585 | |
| 586 | if (o == GOF(EAX) && is124) return o; |
| 587 | if (o == GOF(ECX) && is124) return o; |
| 588 | if (o == GOF(EDX) && is124) return o; |
| 589 | if (o == GOF(EBX) && is124) return o; |
| 590 | if (o == GOF(ESP) && is124) return o; |
| 591 | if (o == GOF(EBP) && is124) return o; |
| 592 | if (o == GOF(ESI) && is124) return o; |
| 593 | if (o == GOF(EDI) && is124) return o; |
| 594 | |
| 595 | if (o == GOF(CC_DEP1) && sz == 4) return o; |
| 596 | if (o == GOF(CC_DEP2) && sz == 4) return o; |
| 597 | |
| 598 | if (o == GOF(CC_OP) && sz == 4) return -1; /* slot used for %AH */ |
| 599 | if (o == GOF(CC_NDEP) && sz == 4) return -1; /* slot used for %BH */ |
| 600 | if (o == GOF(DFLAG) && sz == 4) return -1; /* slot used for %CH */ |
| 601 | if (o == GOF(EIP) && sz == 4) return -1; /* slot unused */ |
sewardj | 71633b1 | 2009-03-30 02:27:29 +0000 | [diff] [blame] | 602 | if (o == GOF(IP_AT_SYSCALL) && sz == 4) return -1; /* slot unused */ |
sewardj | 7cf4e6b | 2008-05-01 20:24:26 +0000 | [diff] [blame] | 603 | if (o == GOF(IDFLAG) && sz == 4) return -1; /* slot used for %DH */ |
| 604 | if (o == GOF(ACFLAG) && sz == 4) return -1; /* slot unused */ |
sewardj | 105e69c | 2008-05-09 23:26:19 +0000 | [diff] [blame] | 605 | if (o == GOF(TISTART) && sz == 4) return -1; /* slot unused */ |
| 606 | if (o == GOF(TILEN) && sz == 4) return -1; /* slot unused */ |
sewardj | 7cf4e6b | 2008-05-01 20:24:26 +0000 | [diff] [blame] | 607 | |
| 608 | /* Treat %AH, %BH, %CH, %DH as independent registers. To do this |
| 609 | requires finding 4 unused 32-bit slots in the second-shadow |
| 610 | guest state, respectively: CC_OP CC_NDEP DFLAG IDFLAG since none |
| 611 | of those are tracked. */ |
| 612 | tl_assert(SZB(CC_OP) == 4); |
| 613 | tl_assert(SZB(CC_NDEP) == 4); |
| 614 | tl_assert(SZB(DFLAG) == 4); |
| 615 | tl_assert(SZB(IDFLAG) == 4); |
| 616 | if (o == 1+ GOF(EAX) && szB == 1) return GOF(CC_OP); |
| 617 | if (o == 1+ GOF(EBX) && szB == 1) return GOF(CC_NDEP); |
| 618 | if (o == 1+ GOF(ECX) && szB == 1) return GOF(DFLAG); |
| 619 | if (o == 1+ GOF(EDX) && szB == 1) return GOF(IDFLAG); |
| 620 | |
| 621 | /* skip XMM and FP admin stuff */ |
| 622 | if (o == GOF(SSEROUND) && szB == 4) return -1; |
| 623 | if (o == GOF(FTOP) && szB == 4) return -1; |
| 624 | if (o == GOF(FPROUND) && szB == 4) return -1; |
| 625 | if (o == GOF(EMWARN) && szB == 4) return -1; |
| 626 | if (o == GOF(FC3210) && szB == 4) return -1; |
| 627 | |
| 628 | /* XMM registers */ |
| 629 | if (o >= GOF(XMM0) && o+sz <= GOF(XMM0)+SZB(XMM0)) return GOF(XMM0); |
| 630 | if (o >= GOF(XMM1) && o+sz <= GOF(XMM1)+SZB(XMM1)) return GOF(XMM1); |
| 631 | if (o >= GOF(XMM2) && o+sz <= GOF(XMM2)+SZB(XMM2)) return GOF(XMM2); |
| 632 | if (o >= GOF(XMM3) && o+sz <= GOF(XMM3)+SZB(XMM3)) return GOF(XMM3); |
| 633 | if (o >= GOF(XMM4) && o+sz <= GOF(XMM4)+SZB(XMM4)) return GOF(XMM4); |
| 634 | if (o >= GOF(XMM5) && o+sz <= GOF(XMM5)+SZB(XMM5)) return GOF(XMM5); |
| 635 | if (o >= GOF(XMM6) && o+sz <= GOF(XMM6)+SZB(XMM6)) return GOF(XMM6); |
| 636 | if (o >= GOF(XMM7) && o+sz <= GOF(XMM7)+SZB(XMM7)) return GOF(XMM7); |
| 637 | |
| 638 | /* MMX accesses to FP regs. Need to allow for 32-bit references |
| 639 | due to dirty helpers for frstor etc, which reference the entire |
| 640 | 64-byte block in one go. */ |
| 641 | if (o >= GOF(FPREG[0]) |
| 642 | && o+sz <= GOF(FPREG[0])+SZB(FPREG[0])) return GOF(FPREG[0]); |
| 643 | if (o >= GOF(FPREG[1]) |
| 644 | && o+sz <= GOF(FPREG[1])+SZB(FPREG[1])) return GOF(FPREG[1]); |
| 645 | if (o >= GOF(FPREG[2]) |
| 646 | && o+sz <= GOF(FPREG[2])+SZB(FPREG[2])) return GOF(FPREG[2]); |
| 647 | if (o >= GOF(FPREG[3]) |
| 648 | && o+sz <= GOF(FPREG[3])+SZB(FPREG[3])) return GOF(FPREG[3]); |
| 649 | if (o >= GOF(FPREG[4]) |
| 650 | && o+sz <= GOF(FPREG[4])+SZB(FPREG[4])) return GOF(FPREG[4]); |
| 651 | if (o >= GOF(FPREG[5]) |
| 652 | && o+sz <= GOF(FPREG[5])+SZB(FPREG[5])) return GOF(FPREG[5]); |
| 653 | if (o >= GOF(FPREG[6]) |
| 654 | && o+sz <= GOF(FPREG[6])+SZB(FPREG[6])) return GOF(FPREG[6]); |
| 655 | if (o >= GOF(FPREG[7]) |
| 656 | && o+sz <= GOF(FPREG[7])+SZB(FPREG[7])) return GOF(FPREG[7]); |
| 657 | |
| 658 | /* skip %GS and other segment related stuff. We could shadow |
| 659 | guest_LDT and guest_GDT, although it seems pointless. |
| 660 | guest_CS .. guest_SS are too small to shadow directly and it |
| 661 | also seems pointless to shadow them indirectly (that is, in |
| 662 | the style of %AH .. %DH). */ |
| 663 | if (o == GOF(CS) && sz == 2) return -1; |
| 664 | if (o == GOF(DS) && sz == 2) return -1; |
| 665 | if (o == GOF(ES) && sz == 2) return -1; |
| 666 | if (o == GOF(FS) && sz == 2) return -1; |
| 667 | if (o == GOF(GS) && sz == 2) return -1; |
| 668 | if (o == GOF(SS) && sz == 2) return -1; |
| 669 | if (o == GOF(LDT) && sz == 4) return -1; |
| 670 | if (o == GOF(GDT) && sz == 4) return -1; |
| 671 | |
| 672 | VG_(printf)("MC_(get_otrack_shadow_offset)(x86)(off=%d,sz=%d)\n", |
| 673 | offset,szB); |
| 674 | tl_assert(0); |
| 675 | # undef GOF |
| 676 | # undef SZB |
| 677 | |
| 678 | # else |
| 679 | # error "FIXME: not implemented for this architecture" |
| 680 | # endif |
| 681 | } |
| 682 | |
| 683 | |
| 684 | /* Let 'arr' describe an indexed reference to a guest state section |
| 685 | (guest state array). |
| 686 | |
| 687 | This function returns the corresponding guest state type to be used |
| 688 | when indexing the corresponding array in the second shadow (origin |
| 689 | tracking) area. If the array is not to be origin-tracked, return |
| 690 | Ity_INVALID. |
| 691 | |
| 692 | This function must agree with MC_(get_otrack_shadow_offset) above. |
| 693 | See comments at the start of MC_(get_otrack_shadow_offset). |
| 694 | */ |
| 695 | IRType MC_(get_otrack_reg_array_equiv_int_type) ( IRRegArray* arr ) |
| 696 | { |
| 697 | /* -------------------- ppc64 -------------------- */ |
| 698 | # if defined(VGA_ppc64) |
| 699 | /* The redir stack. */ |
| 700 | if (arr->base == offsetof(VexGuestPPC64State,guest_REDIR_STACK[0]) |
| 701 | && arr->elemTy == Ity_I64 |
| 702 | && arr->nElems == VEX_GUEST_PPC64_REDIR_STACK_SIZE) |
| 703 | return Ity_I64; |
| 704 | |
| 705 | VG_(printf)("get_reg_array_equiv_int_type(ppc64): unhandled: "); |
| 706 | ppIRRegArray(arr); |
| 707 | VG_(printf)("\n"); |
| 708 | tl_assert(0); |
| 709 | |
| 710 | /* -------------------- ppc32 -------------------- */ |
| 711 | # elif defined(VGA_ppc32) |
| 712 | /* The redir stack. */ |
| 713 | if (arr->base == offsetof(VexGuestPPC32State,guest_REDIR_STACK[0]) |
| 714 | && arr->elemTy == Ity_I32 |
| 715 | && arr->nElems == VEX_GUEST_PPC32_REDIR_STACK_SIZE) |
| 716 | return Ity_I32; |
| 717 | |
| 718 | VG_(printf)("get_reg_array_equiv_int_type(ppc32): unhandled: "); |
| 719 | ppIRRegArray(arr); |
| 720 | VG_(printf)("\n"); |
| 721 | tl_assert(0); |
| 722 | |
| 723 | /* -------------------- amd64 -------------------- */ |
| 724 | # elif defined(VGA_amd64) |
| 725 | /* Ignore the FP tag array - pointless to shadow, and in any case |
| 726 | the elements are too small */ |
| 727 | if (arr->base == offsetof(VexGuestAMD64State,guest_FPTAG) |
| 728 | && arr->elemTy == Ity_I8 && arr->nElems == 8) |
| 729 | return Ity_INVALID; |
| 730 | |
| 731 | /* The FP register array */ |
| 732 | if (arr->base == offsetof(VexGuestAMD64State,guest_FPREG[0]) |
| 733 | && arr->elemTy == Ity_F64 && arr->nElems == 8) |
| 734 | return Ity_I64; |
| 735 | |
| 736 | VG_(printf)("get_reg_array_equiv_int_type(amd64): unhandled: "); |
| 737 | ppIRRegArray(arr); |
| 738 | VG_(printf)("\n"); |
| 739 | tl_assert(0); |
| 740 | |
| 741 | /* --------------------- x86 --------------------- */ |
| 742 | # elif defined(VGA_x86) |
| 743 | /* Ignore the FP tag array - pointless to shadow, and in any case |
| 744 | the elements are too small */ |
| 745 | if (arr->base == offsetof(VexGuestX86State,guest_FPTAG) |
| 746 | && arr->elemTy == Ity_I8 && arr->nElems == 8) |
| 747 | return Ity_INVALID; |
| 748 | |
| 749 | /* The FP register array */ |
| 750 | if (arr->base == offsetof(VexGuestX86State,guest_FPREG[0]) |
| 751 | && arr->elemTy == Ity_F64 && arr->nElems == 8) |
| 752 | return Ity_I64; |
| 753 | |
| 754 | VG_(printf)("get_reg_array_equiv_int_type(x86): unhandled: "); |
| 755 | ppIRRegArray(arr); |
| 756 | VG_(printf)("\n"); |
| 757 | tl_assert(0); |
| 758 | |
| 759 | # else |
| 760 | # error "FIXME: not implemented for this architecture" |
| 761 | # endif |
| 762 | } |
| 763 | |
| 764 | |
| 765 | /*--------------------------------------------------------------------*/ |
| 766 | /*--- end mc_machine.c ---*/ |
| 767 | /*--------------------------------------------------------------------*/ |