// Licensed to the .NET Foundation under one or more agreements. // The .NET Foundation licenses this file to you under the MIT license. // See the LICENSE file in the project root for more information. /*XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XX XX XX GCDecode XX XX XX XX Logic to decode the JIT method header and GC pointer tables XX XX XX XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX */ #ifdef _TARGET_X86_ /* This file is shared between the VM and JIT/IL and SOS/Strike directories */ #include "gcinfotypes.h" /*****************************************************************************/ /* * This entire file depends upon GC2_ENCODING being set to 1 * *****************************************************************************/ size_t FASTCALL decodeUnsigned(PTR_CBYTE src, unsigned* val) { LIMITED_METHOD_CONTRACT; size_t size = 1; BYTE byte = *src++; unsigned value = byte & 0x7f; while (byte & 0x80) { size++; byte = *src++; value <<= 7; value += byte & 0x7f; } *val = value; return size; } size_t FASTCALL decodeUDelta(PTR_CBYTE src, unsigned* value, unsigned lastValue) { CONTRACTL { NOTHROW; GC_NOTRIGGER; } CONTRACTL_END; unsigned delta; size_t size = decodeUnsigned(src, &delta); *value = lastValue + delta; return size; } size_t FASTCALL decodeSigned(PTR_CBYTE src, int* val) { CONTRACTL { NOTHROW; GC_NOTRIGGER; } CONTRACTL_END; size_t size = 1; BYTE byte = *src++; BYTE first = byte; int value = byte & 0x3f; while (byte & 0x80) { size++; byte = *src++; value <<= 7; value += byte & 0x7f; } if (first & 0x40) value = -value; *val = value; return size; } /*****************************************************************************/ #if defined(_MSC_VER) #pragma optimize("tgy", on) #endif PTR_CBYTE FASTCALL decodeHeader(PTR_CBYTE table, UINT32 version, InfoHdr* header) { LIMITED_METHOD_DAC_CONTRACT; BYTE nextByte = *table++; BYTE encoding = nextByte & 0x7f; GetInfoHdr(encoding, header); while (nextByte & MORE_BYTES_TO_FOLLOW) { nextByte = *table++; encoding = nextByte & ADJ_ENCODING_MAX; // encoding here always corresponds to codes in InfoHdrAdjust set if (encoding < NEXT_FOUR_START) { if (encoding < SET_ARGCOUNT) { header->frameSize = encoding - SET_FRAMESIZE; } else if (encoding < SET_PROLOGSIZE) { header->argCount = encoding - SET_ARGCOUNT; } else if (encoding < SET_EPILOGSIZE) { header->prologSize = encoding - SET_PROLOGSIZE; } else if (encoding < SET_EPILOGCNT) { header->epilogSize = encoding - SET_EPILOGSIZE; } else if (encoding < SET_UNTRACKED) { header->epilogCount = (encoding - SET_EPILOGCNT) / 2; header->epilogAtEnd = ((encoding - SET_EPILOGCNT) & 1) == 1; assert(!header->epilogAtEnd || (header->epilogCount == 1)); } else if (encoding < FIRST_FLIP) { header->untrackedCnt = encoding - SET_UNTRACKED; _ASSERTE(header->untrackedCnt != HAS_UNTRACKED); } else switch (encoding) { default: assert(!"Unexpected encoding"); break; case FLIP_EDI_SAVED: header->ediSaved ^= 1; break; case FLIP_ESI_SAVED: header->esiSaved ^= 1; break; case FLIP_EBX_SAVED: header->ebxSaved ^= 1; break; case FLIP_EBP_SAVED: header->ebpSaved ^= 1; break; case FLIP_EBP_FRAME: header->ebpFrame ^= 1; break; case FLIP_INTERRUPTIBLE: header->interruptible ^= 1; break; case FLIP_DOUBLE_ALIGN: header->doubleAlign ^= 1; break; case FLIP_SECURITY: header->security ^= 1; break; case FLIP_HANDLERS: header->handlers ^= 1; break; case FLIP_LOCALLOC: header->localloc ^= 1; break; case FLIP_EDITnCONTINUE: header->editNcontinue ^= 1; break; case FLIP_VAR_PTR_TABLE_SZ: header->varPtrTableSize ^= HAS_VARPTR; break; case FFFF_UNTRACKED_CNT: header->untrackedCnt = HAS_UNTRACKED; break; case FLIP_VARARGS: header->varargs ^= 1; break; case FLIP_PROF_CALLBACKS: header->profCallbacks ^= 1; break; case FLIP_HAS_GENERICS_CONTEXT: header->genericsContext ^= 1; break; case FLIP_GENERICS_CONTEXT_IS_METHODDESC: header->genericsContextIsMethodDesc ^= 1; break; case FLIP_HAS_GS_COOKIE: header->gsCookieOffset ^= HAS_GS_COOKIE_OFFSET; break; case FLIP_SYNC: header->syncStartOffset ^= HAS_SYNC_OFFSET; break; case FLIP_REV_PINVOKE_FRAME: _ASSERTE(GCInfoEncodesRevPInvokeFrame(version)); header->revPInvokeOffset ^= HAS_REV_PINVOKE_FRAME_OFFSET; break; case NEXT_OPCODE: _ASSERTE((nextByte & MORE_BYTES_TO_FOLLOW) && "Must have another code"); nextByte = *table++; encoding = nextByte & ADJ_ENCODING_MAX; // encoding here always corresponds to codes in InfoHdrAdjust2 set if (encoding < SET_RET_KIND_MAX) { _ASSERTE(GCInfoEncodesReturnKind(version)); header->returnKind = (ReturnKind)encoding; } else { assert(!"Unexpected encoding"); } break; } } else { unsigned char lowBits; switch (encoding >> 4) { default: assert(!"Unexpected encoding"); break; case 5: assert(NEXT_FOUR_FRAMESIZE == 0x50); lowBits = encoding & 0xf; header->frameSize <<= 4; header->frameSize += lowBits; break; case 6: assert(NEXT_FOUR_ARGCOUNT == 0x60); lowBits = encoding & 0xf; header->argCount <<= 4; header->argCount += lowBits; break; case 7: if ((encoding & 0x8) == 0) { assert(NEXT_THREE_PROLOGSIZE == 0x70); lowBits = encoding & 0x7; header->prologSize <<= 3; header->prologSize += lowBits; } else { assert(NEXT_THREE_EPILOGSIZE == 0x78); lowBits = encoding & 0x7; header->epilogSize <<= 3; header->epilogSize += lowBits; } break; } } } return table; } void FASTCALL decodeCallPattern(int pattern, unsigned * argCnt, unsigned * regMask, unsigned * argMask, unsigned * codeDelta) { CONTRACTL { NOTHROW; GC_NOTRIGGER; SUPPORTS_DAC; } CONTRACTL_END; assert((pattern>=0) && (pattern<80)); CallPattern pat; pat.val = callPatternTable[pattern]; *argCnt = pat.fld.argCnt; *regMask = pat.fld.regMask; // EBP,EBX,ESI,EDI *argMask = pat.fld.argMask; *codeDelta = pat.fld.codeDelta; } #define YES HAS_VARPTR const InfoHdrSmall infoHdrShortcut[128] = { // Prolog size // | // | Epilog size // | | // | | Epilog count // | | | // | | | Epilog at end // | | | | // | | | | EDI saved // | | | | | // | | | | | ESI saved // | | | | | | // | | | | | | EBX saved // | | | | | | | // | | | | | | | EBP saved // | | | | | | | | // | | | | | | | | EBP-frame // | | | | | | | | | // | | | | | | | | | Interruptible method // | | | | | | | | | | // | | | | | | | | | | doubleAlign // | | | | | | | | | | | // | | | | | | | | | | | security flag // | | | | | | | | | | | | // | | | | | | | | | | | | handlers // | | | | | | | | | | | | | // | | | | | | | | | | | | | localloc // | | | | | | | | | | | | | | // | | | | | | | | | | | | | | edit and continue // | | | | | | | | | | | | | | | // | | | | | | | | | | | | | | | varargs // | | | | | | | | | | | | | | | | // | | | | | | | | | | | | | | | | ProfCallbacks // | | | | | | | | | | | | | | | | | // | | | | | | | | | | | | | | | | | genericsContext // | | | | | | | | | | | | | | | | | | // | | | | | | | | | | | | | | | | | | genericsContextIsMethodDesc // | | | | | | | | | | | | | | | | | | | // | | | | | | | | | | | | | | | | | | | returnKind // | | | | | | | | | | | | | | | | | | | | // | | | | | | | | | | | | | | | | | | | | Arg count // | | | | | | | | | | | | | | | | | | | | | Counted occurences // | | | | | | | | | | | | | | | | | | | | | Frame size | // | | | | | | | | | | | | | | | | | | | | | | | // | | | | | | | | | | | | | | | | | | | | | | untrackedCnt | Header encoding // | | | | | | | | | | | | | | | | | | | | | | | | | // | | | | | | | | | | | | | | | | | | | | | | | varPtrTable | | // | | | | | | | | | | | | | | | | | | | | | | | | | | // | | | | | | | | | | | | | | | | | | | | | | | | gsCookieOffs | | // | | | | | | | | | | | | | | | | | | | | | | | | | | | // | | | | | | | | | | | | | | | | | | | | | | | | | syncOffs | | // | | | | | | | | | | | | | | | | | | | | | | | | | | | | | // | | | | | | | | | | | | | | | | | | | | | | | | | | | | | // | | | | | | | | | | | | | | | | | | | | | | | | | | | | | // v v v v v v v v v v v v v v v v v v v v v v v v v v v v v { 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 1139 00 { 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 128738 01 { 0, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 3696 02 { 0, 1, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 402 03 { 0, 3, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0 }, // 4259 04 { 0, 3, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0 }, // 3379 05 { 0, 3, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0 }, // 2058 06 { 0, 3, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 1, 0 }, // 728 07 { 0, 3, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0 }, // 984 08 { 0, 3, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0 }, // 606 09 { 0, 3, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0 }, // 1110 0a { 0, 3, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 1, 0 }, // 414 0b { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, YES }, // 1553 0c { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, YES }, // 584 0d { 1, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, YES }, // 2182 0e { 1, 2, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 3445 0f { 1, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 }, // 1369 10 { 1, 2, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 515 11 { 1, 2, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 21127 12 { 1, 2, 2, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 3517 13 { 1, 2, 3, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 750 14 { 1, 4, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0 }, // 1876 15 { 1, 4, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0 }, // 1665 16 { 1, 4, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0 }, // 729 17 { 1, 4, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0 }, // 484 18 { 1, 4, 2, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0 }, // 331 19 { 2, 3, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, YES }, // 361 1a { 2, 3, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 964 1b { 2, 3, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 3713 1c { 2, 3, 1, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 466 1d { 2, 3, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 }, // 1325 1e { 2, 3, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, YES }, // 712 1f { 2, 3, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 588 20 { 2, 3, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 20542 21 { 2, 3, 2, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 3802 22 { 2, 3, 3, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 798 23 { 2, 5, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0 }, // 1900 24 { 2, 5, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0 }, // 385 25 { 2, 5, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0 }, // 1617 26 { 2, 5, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0 }, // 1743 27 { 2, 5, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0 }, // 909 28 { 2, 5, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 1, 0 }, // 602 29 { 2, 5, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0 }, // 352 2a { 2, 6, 1, 1, 1, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, YES }, // 657 2b { 2, 7, 1, 0, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, YES }, // 1283 2c { 2, 7, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, YES }, // 1286 2d { 3, 4, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 }, // 1495 2e { 3, 4, 1, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 1989 2f { 3, 4, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 }, // 1154 30 { 3, 4, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 9300 31 { 3, 4, 2, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 }, // 392 32 { 3, 4, 2, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 1720 33 { 3, 6, 1, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0 }, // 1246 34 { 3, 6, 1, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0 }, // 800 35 { 3, 6, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0 }, // 1179 36 { 3, 6, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0 }, // 1368 37 { 3, 6, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0 }, // 349 38 { 3, 6, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0 }, // 505 39 { 3, 6, 2, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0 }, // 629 3a { 3, 8, 1, 0, 1, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 2, YES }, // 365 3b { 4, 5, 1, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 }, // 487 3c { 4, 5, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 1752 3d { 4, 5, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 }, // 1959 3e { 4, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 2436 3f { 4, 5, 2, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 861 40 { 4, 7, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0 }, // 1459 41 { 4, 7, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0 }, // 950 42 { 4, 7, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0 }, // 1491 43 { 4, 7, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0 }, // 879 44 { 4, 7, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0 }, // 408 45 { 5, 4, 1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 4870 46 { 5, 6, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 }, // 359 47 { 5, 6, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0 }, // 915 48 { 5, 6, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0 }, // 412 49 { 5, 6, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 }, // 1288 4a { 5, 6, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, YES }, // 1591 4b { 5, 6, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, YES }, // 361 4c { 5, 6, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 0, 0 }, // 623 4d { 5, 8, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0 }, // 1239 4e { 6, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 457 4f { 6, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 606 50 { 6, 4, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, YES }, // 1073 51 { 6, 4, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, YES }, // 508 52 { 6, 6, 1, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 }, // 330 53 { 6, 6, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 }, // 1709 54 { 6, 7, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0 }, // 1164 55 { 7, 4, 1, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, // 556 56 { 7, 5, 1, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, YES }, // 529 57 { 7, 5, 1, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, YES }, // 1423 58 { 7, 8, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, YES }, // 2455 59 { 7, 8, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0 }, // 956 5a { 7, 8, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, YES }, // 1399 5b { 7, 8, 2, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, YES }, // 587 5c { 7, 10, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 6, 1, YES }, // 743 5d { 7, 10, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 0, 0 }, // 1004 5e { 7, 10, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 1, YES }, // 487 5f { 7, 10, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 0, 0 }, // 337 60 { 7, 10, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 3, 0, YES }, // 361 61 { 8, 3, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0 }, // 560 62 { 8, 6, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0 }, // 1377 63 { 9, 4, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0 }, // 877 64 { 9, 7, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0 }, // 3041 65 { 9, 7, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, YES }, // 349 66 { 10, 5, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 1, 0 }, // 2061 67 { 10, 5, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0 }, // 577 68 { 11, 6, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 1, 0 }, // 1195 69 { 12, 5, 1, 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 }, // 491 6a { 13, 8, 1, 0, 1, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, YES }, // 627 6b { 13, 8, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 0 }, // 1099 6c { 13, 10, 1, 0, 1, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 6, 1, YES }, // 488 6d { 14, 7, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, YES }, // 574 6e { 16, 7, 1, 0, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, YES }, // 1281 6f { 16, 7, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, YES }, // 1881 70 { 16, 7, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, YES }, // 339 71 { 16, 7, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0 }, // 2594 72 { 16, 7, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0 }, // 339 73 { 16, 7, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, YES }, // 2107 74 { 16, 7, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, YES }, // 2372 75 { 16, 7, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0, YES }, // 1078 76 { 16, 7, 2, 0, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, YES }, // 384 77 { 16, 9, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 4, 1, YES }, // 1541 78 { 16, 9, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 2, 4, 1, YES }, // 975 79 { 19, 7, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, YES }, // 546 7a { 24, 7, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, YES }, // 675 7b { 45, 9, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0 }, // 902 7c { 51, 7, 1, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 13, 0, YES }, // 432 7d { 51, 7, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, YES }, // 361 7e { 51, 7, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 11, 0, 0 }, // 703 7f }; bool InfoHdrSmall::isHeaderMatch(const InfoHdr& target) const { #ifdef _ASSERTE // target cannot have place-holder values. _ASSERTE(target.untrackedCnt != HAS_UNTRACKED && target.varPtrTableSize != HAS_VARPTR && target.gsCookieOffset != HAS_GS_COOKIE_OFFSET && target.syncStartOffset != HAS_SYNC_OFFSET && target.revPInvokeOffset != HAS_REV_PINVOKE_FRAME_OFFSET); #endif // compare two InfoHdr's up to but not including the untrackCnt field if (memcmp(this, &target, offsetof(InfoHdr, untrackedCnt)) != 0) return false; if (untrackedCnt != target.untrackedCnt) { if (target.untrackedCnt <= SET_UNTRACKED_MAX) return false; else if (untrackedCnt != HAS_UNTRACKED) return false; } if (varPtrTableSize != target.varPtrTableSize) { if ((varPtrTableSize != 0) != (target.varPtrTableSize != 0)) return false; } if (target.gsCookieOffset != INVALID_GS_COOKIE_OFFSET) return false; if (target.syncStartOffset != INVALID_SYNC_OFFSET) return false; if (target.revPInvokeOffset!= INVALID_REV_PINVOKE_OFFSET) return false; return true; } const unsigned callCommonDelta[4] = { 6,8,10,12 }; /* * In the callPatternTable each 32-bit unsigned value represents four bytes: * * byte0,byte1,byte2,byte3 => codeDelta,argMask,regMask,argCnt * for example 0x0c000301 => codeDelta of 12, argMask of 0, * regMask of 0x3, argCnt of 1 * * Furthermore within the table the following maximum values are in place: * * codeDelta <= CP_MAX_CODE_DELTA // (0x23) * argCnt <= CP_MAX_ARG_CNT // (0x02) * argMask <= CP_MAX_ARG_MASK // (0x00) * * Note that ARG_CNT is the count of pushed args for a nested call site. * And since the first two arguments are always passed in registers * an ARG_CNT of 1 would mean that the nested call site had three arguments * * Note that ARG_MASK is the mask of pushed args that contain GC pointers * since the first two arguments are always passed in registers it is * a fairly rare occurance to push a GC pointer as an argument, since it * only occurs for nested calls, when the third or later argument for the * outer call contains a GC ref. * * Additionally the encoding of the regMask uses the following bits: * EDI = 0x1, ESI = 0x2, EBX = 0x4, EBP = 0x8 * */ const unsigned callPatternTable[80] = { // # of occurences 0x0a000200, // 30109 0x0c000200, // 22970 0x0c000201, // 19005 0x0a000300, // 12193 0x0c000300, // 10614 0x0e000200, // 10253 0x10000200, // 9746 0x0b000200, // 9698 0x0d000200, // 9625 0x08000200, // 8909 0x0c000301, // 8522 0x11000200, // 7382 0x0e000300, // 7357 0x12000200, // 7139 0x10000300, // 7062 0x11000300, // 6970 0x0a000201, // 6842 0x0a000100, // 6803 0x0f000200, // 6795 0x13000200, // 6559 0x08000300, // 6079 0x15000200, // 5874 0x0d000201, // 5492 0x0c000100, // 5193 0x0d000300, // 5165 0x23000200, // 5143 0x1b000200, // 5035 0x14000200, // 4872 0x0f000300, // 4850 0x0a000700, // 4781 0x09000200, // 4560 0x12000300, // 4496 0x16000200, // 4180 0x07000200, // 4021 0x09000300, // 4012 0x0c000700, // 3988 0x0c000600, // 3946 0x0e000100, // 3823 0x1a000200, // 3764 0x18000200, // 3744 0x17000200, // 3736 0x1f000200, // 3671 0x13000300, // 3559 0x0a000600, // 3214 0x0e000600, // 3109 0x08000201, // 2984 0x0b000300, // 2928 0x0a000301, // 2859 0x07000100, // 2826 0x13000100, // 2782 0x09000301, // 2644 0x19000200, // 2638 0x11000700, // 2618 0x21000200, // 2518 0x0d000202, // 2484 0x10000100, // 2480 0x0f000600, // 2413 0x14000300, // 2363 0x0c000500, // 2362 0x08000301, // 2285 0x20000200, // 2245 0x10000700, // 2240 0x0f000100, // 2236 0x1e000200, // 2214 0x0c000400, // 2193 0x16000300, // 2171 0x12000600, // 2132 0x22000200, // 2011 0x1d000200, // 2011 0x0c000f00, // 1996 0x0e000700, // 1971 0x0a000400, // 1970 0x09000201, // 1932 0x10000600, // 1903 0x15000300, // 1847 0x0a000101, // 1814 0x0a000b00, // 1771 0x0c000601, // 1737 0x09000700, // 1737 0x07000300, // 1684 }; #endif // _TARGET_X86_