diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/x86.h | 290 |
1 files changed, 202 insertions, 88 deletions
@@ -1,5 +1,5 @@ /* - * Copyright © 2022 Michael Smith <mikesmiffy128@gmail.com> + * Copyright © 2023 Michael Smith <mikesmiffy128@gmail.com> * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -20,8 +20,8 @@ /* * Opcode-based X86 instruction analysis. In other words, *NOT* a disassembler. * Only cares about the instructions we expect to see in basic 32-bit userspace - * functions; there's no kernel-mode instructions, no MMX/3DNow!/SSE/AVX, no - * REX, EVEX, yadda yadda. + * functions; there's no kernel-mode instructions, no SSE 3+, no AVX, no REX, + * EVEX, yadda yadda. */ // XXX: no BOUND (0x62): ambiguous with EVEX prefix - can't be arsed! @@ -316,106 +316,220 @@ X(X86_2B_PUSHGS, 0xA8) \ X(X86_2B_POPGS, 0xA9) \ X(X86_2B_RSM, 0xAA) \ - X(X86_2B_BSWAPEAX, 0xC8) \ - X(X86_2B_BSWAPECX, 0xC9) \ - X(X86_2B_BSWAPEDX, 0xCA) \ - X(X86_2B_BSWAPEBX, 0xCB) \ - X(X86_2B_BSWAPESP, 0xCC) \ - X(X86_2B_BSWAPEBP, 0xCD) \ - X(X86_2B_BSWAPESI, 0xCE) \ - X(X86_2B_BSWAPEDI, 0xCF) + X(X86_2B_BSWAPEAX, 0xC8) \ + X(X86_2B_BSWAPECX, 0xC9) \ + X(X86_2B_BSWAPEDX, 0xCA) \ + X(X86_2B_BSWAPEBX, 0xCB) \ + X(X86_2B_BSWAPESP, 0xCC) \ + X(X86_2B_BSWAPEBP, 0xCD) \ + X(X86_2B_BSWAPESI, 0xCE) \ + X(X86_2B_BSWAPEDI, 0xCF) \ + /* MMX instruction */ \ + X(X86_2B_EMMS, 0x77) /* Second bytes of opcodes with a word-sized immediate operand */ #define X86_OPS_2BYTE_IW(X) \ - X(X86_2B_JOII, 0x80) /* From offset (indirect) */ \ - X(X86_2B_JNOII, 0x81) /* From offset (indirect) */ \ - X(X86_2B_JBII, 0x82) /* AKA JC; from offset (indirect) */ \ - X(X86_2B_JNBII, 0x83) /* AKA JNC; from offset (indirect) */ \ - X(X86_2B_JZII, 0x84) /* AKA JE; from offset (indirect) */ \ - X(X86_2B_JNZII, 0x85) /* AKA JNZ; from offset (indirect) */ \ - X(X86_2B_JNAII, 0x86) /* AKA JBE; from offset (indirect) */ \ - X(X86_2B_JAII, 0x87) /* AKA JNBE; from offset (indirect) */ \ - X(X86_2B_JSII, 0x88) /* From offset (indirect) */ \ - X(X86_2B_JNSII, 0x89) /* From offset (indirect) */ \ - X(X86_2B_JPII, 0x8A) /* From offset (indirect) */ \ - X(X86_2B_JNPII, 0x8B) /* From offset (indirect) */ \ - X(X86_2B_JLII, 0x8C) /* AKA JNGE; from offset (indirect) */ \ - X(X86_2B_JNLII, 0x8D) /* AKA JGE; from offset (indirect) */ \ - X(X86_2B_JNGII, 0x8E) /* AKA JLE; from offset (indirect) */ \ - X(X86_2B_JGII, 0x8F) /* AKA JNLE; from offset (indirect) */ + X(X86_2B_JOII, 0x80) /* From offset (indirect) */ \ + X(X86_2B_JNOII, 0x81) /* From offset (indirect) */ \ + X(X86_2B_JBII, 0x82) /* AKA JC; from offset (indirect) */ \ + X(X86_2B_JNBII, 0x83) /* AKA JNC; from offset (indirect) */ \ + X(X86_2B_JZII, 0x84) /* AKA JE; from offset (indirect) */ \ + X(X86_2B_JNZII, 0x85) /* AKA JNZ; from offset (indirect) */ \ + X(X86_2B_JNAII, 0x86) /* AKA JBE; from offset (indirect) */ \ + X(X86_2B_JAII, 0x87) /* AKA JNBE; from offset (indirect) */ \ + X(X86_2B_JSII, 0x88) /* From offset (indirect) */ \ + X(X86_2B_JNSII, 0x89) /* From offset (indirect) */ \ + X(X86_2B_JPII, 0x8A) /* From offset (indirect) */ \ + X(X86_2B_JNPII, 0x8B) /* From offset (indirect) */ \ + X(X86_2B_JLII, 0x8C) /* AKA JNGE; from offset (indirect) */ \ + X(X86_2B_JNLII, 0x8D) /* AKA JGE; from offset (indirect) */ \ + X(X86_2B_JNGII, 0x8E) /* AKA JLE; from offset (indirect) */ \ + X(X86_2B_JGII, 0x8F) /* AKA JNLE; from offset (indirect) */ /* Second bytes of opcodes with a ModRM */ #define X86_OPS_2BYTE_MRM(X) \ - X(X86_2B_NOP, 0x0D) /* Variable length NOP (3-9 with prefix) */ \ - X(X86_2B_HINTS1, 0x18) /* Prefetch and hint-nop block 1/8 */ \ - X(X86_2B_HINTS2, 0x19) /* Prefetch and hint-nop block 2/8 */ \ - X(X86_2B_HINTS3, 0x1A) /* Prefetch and hint-nop block 3/8 */ \ - X(X86_2B_HINTS4, 0x1B) /* Prefetch and hint-nop block 4/8 */ \ - X(X86_2B_HINTS5, 0x1C) /* Prefetch and hint-nop block 5/8 */ \ - X(X86_2B_HINTS6, 0x1D) /* Prefetch and hint-nop block 6/8 */ \ - X(X86_2B_HINTS7, 0x1E) /* Prefetch and hint-nop block 7/8 */ \ - X(X86_2B_HINTS8, 0x1F) /* Prefetch and hint-nop block 8/8 */ \ - X(X86_2B_CMOVO, 0x40) \ - X(X86_2B_CMOVNO, 0x41) \ - X(X86_2B_CMOVB, 0x42) /* AKA CMOVC */ \ - X(X86_2B_CMOVNB, 0x43) /* AKA CMOVNC */ \ - X(X86_2B_CMOVZ, 0x44) /* AKA CMOVE */ \ - X(X86_2B_CMOVNZ, 0x45) /* AKA CMOVNE */ \ - X(X86_2B_CMOVNA, 0x46) /* AKA CMOVBE */ \ - X(X86_2B_CMOVA, 0x47) /* AKA CMOVNBE */ \ - X(X86_2B_CMOVS, 0x48) \ - X(X86_2B_CMOVNS, 0x49) \ - X(X86_2B_CMOVP, 0x4A) \ - X(X86_2B_CMOVNP, 0x4B) \ - X(X86_2B_CMOVL, 0x4C) /* AKA CMOVNGE */ \ - X(X86_2B_CMOVNL, 0x4D) /* AKA CMOVGE */ \ - X(X86_2B_CMOVNG, 0x4E) /* AKA CMOVLE */ \ - X(X86_2B_CMOVG, 0x4F) /* AKA CMOVNLE */ \ - X(X86_2B_SETO, 0x90) \ - X(X86_2B_SETNO, 0x91) \ - X(X86_2B_SETB, 0x92) /* AKA SETC */ \ - X(X86_2B_SETNB, 0x93) /* AKA SETNC */ \ - X(X86_2B_SETZ, 0x94) /* AKA SETE */ \ - X(X86_2B_SETNZ, 0x95) /* AKA SETNZ */ \ - X(X86_2B_SETNA, 0x96) /* AKA SETBE */ \ - X(X86_2B_SETA, 0x97) /* AKA SETNBE */ \ - X(X86_2B_SETS, 0x98) \ - X(X86_2B_SETNS, 0x99) \ - X(X86_2B_SETP, 0x9A) \ - X(X86_2B_SETNP, 0x9B) \ - X(X86_2B_SETL, 0x9C) /* AKA SETNGE */ \ - X(X86_2B_SETNL, 0x9D) /* AKA SETGE */ \ - X(X86_2B_SETNG, 0x9E) /* AKA SETLE */ \ - X(X86_2B_SETG, 0x9F) /* AKA SETNLE */ \ - X(X86_2B_BTMR, 0xA3) \ - X(X86_2B_SHLDMRCL, 0xA5) \ - X(X86_2B_BTS, 0xAB) \ - X(X86_2B_SHRDMRCL, 0xAD) \ - X(X86_2B_MISC, 0xAE) /* Float env stuff, memory fences */ \ - X(X86_2B_IMUL, 0xAF) \ - X(X86_2B_CMPXCHG8, 0xB0) \ - X(X86_2B_CMPXCHGW, 0xB1) \ - X(X86_2B_MOVZX8, 0xB6) \ - X(X86_2B_MOVZXW, 0xB7) \ - X(X86_2B_POPCNT, 0xB8) \ - X(X86_2B_BTCRM, 0xBB) \ - X(X86_2B_BSF, 0xBC) \ - X(X86_2B_BSR, 0xBD) \ - X(X86_2B_MOVSX8, 0xBE) \ - X(X86_2B_MOVSXW, 0xBF) \ - X(X86_2B_XADDRM8, 0xC0) \ - X(X86_2B_XADDRMW, 0xC1) \ + X(X86_2B_NOP, 0x0D) /* Variable length NOP (3-9 with prefix) */ \ + X(X86_2B_HINTS1, 0x18) /* Prefetch and hint-nop block 1/8 */ \ + X(X86_2B_HINTS2, 0x19) /* Prefetch and hint-nop block 2/8 */ \ + X(X86_2B_HINTS3, 0x1A) /* Prefetch and hint-nop block 3/8 */ \ + X(X86_2B_HINTS4, 0x1B) /* Prefetch and hint-nop block 4/8 */ \ + X(X86_2B_HINTS5, 0x1C) /* Prefetch and hint-nop block 5/8 */ \ + X(X86_2B_HINTS6, 0x1D) /* Prefetch and hint-nop block 6/8 */ \ + X(X86_2B_HINTS7, 0x1E) /* Prefetch and hint-nop block 7/8 */ \ + X(X86_2B_HINTS8, 0x1F) /* Prefetch and hint-nop block 8/8 */ \ + X(X86_2B_CMOVO, 0x40) \ + X(X86_2B_CMOVNO, 0x41) \ + X(X86_2B_CMOVB, 0x42) /* AKA CMOVC */ \ + X(X86_2B_CMOVNB, 0x43) /* AKA CMOVNC */ \ + X(X86_2B_CMOVZ, 0x44) /* AKA CMOVE */ \ + X(X86_2B_CMOVNZ, 0x45) /* AKA CMOVNE */ \ + X(X86_2B_CMOVNA, 0x46) /* AKA CMOVBE */ \ + X(X86_2B_CMOVA, 0x47) /* AKA CMOVNBE */ \ + X(X86_2B_CMOVS, 0x48) \ + X(X86_2B_CMOVNS, 0x49) \ + X(X86_2B_CMOVP, 0x4A) \ + X(X86_2B_CMOVNP, 0x4B) \ + X(X86_2B_CMOVL, 0x4C) /* AKA CMOVNGE */ \ + X(X86_2B_CMOVNL, 0x4D) /* AKA CMOVGE */ \ + X(X86_2B_CMOVNG, 0x4E) /* AKA CMOVLE */ \ + X(X86_2B_CMOVG, 0x4F) /* AKA CMOVNLE */ \ + X(X86_2B_SETO, 0x90) \ + X(X86_2B_SETNO, 0x91) \ + X(X86_2B_SETB, 0x92) /* AKA SETC */ \ + X(X86_2B_SETNB, 0x93) /* AKA SETNC */ \ + X(X86_2B_SETZ, 0x94) /* AKA SETE */ \ + X(X86_2B_SETNZ, 0x95) /* AKA SETNZ */ \ + X(X86_2B_SETNA, 0x96) /* AKA SETBE */ \ + X(X86_2B_SETA, 0x97) /* AKA SETNBE */ \ + X(X86_2B_SETS, 0x98) \ + X(X86_2B_SETNS, 0x99) \ + X(X86_2B_SETP, 0x9A) \ + X(X86_2B_SETNP, 0x9B) \ + X(X86_2B_SETL, 0x9C) /* AKA SETNGE */ \ + X(X86_2B_SETNL, 0x9D) /* AKA SETGE */ \ + X(X86_2B_SETNG, 0x9E) /* AKA SETLE */ \ + X(X86_2B_SETG, 0x9F) /* AKA SETNLE */ \ + X(X86_2B_BTMR, 0xA3) \ + X(X86_2B_SHLDMRCL, 0xA5) \ + X(X86_2B_BTS, 0xAB) \ + X(X86_2B_SHRDMRCL, 0xAD) \ + X(X86_2B_MISC, 0xAE) /* Float env stuff, memory fences */ \ + X(X86_2B_IMUL, 0xAF) \ + X(X86_2B_CMPXCHG8, 0xB0) \ + X(X86_2B_CMPXCHGW, 0xB1) \ + X(X86_2B_MOVZX8, 0xB6) \ + X(X86_2B_MOVZXW, 0xB7) \ + X(X86_2B_POPCNT, 0xB8) \ + X(X86_2B_BTCRM, 0xBB) \ + X(X86_2B_BSF, 0xBC) \ + X(X86_2B_BSR, 0xBD) \ + X(X86_2B_MOVSX8, 0xBE) \ + X(X86_2B_MOVSXW, 0xBF) \ + X(X86_2B_XADDRM8, 0xC0) \ + X(X86_2B_XADDRMW, 0xC1) \ /* NOTE: this one is actually a block with some VMX stuff too; it's only CMPXCHG64 (CMPXCHG8B if you prefer) if MRM.reg = 1, but naming it this way seemed more useful since it's what you'll see in normal userspace programs, which is what we're interested in. */ \ - X(X86_2B_CMPXCHG64, 0xC7) + X(X86_2B_CMPXCHG64, 0xC7) \ + /* -- MMX/SSE1/SSE2 instructions -- */ \ + /* XXX: some of the naming here isn't totally perfect */ \ + X(X86_2B_MOVRM128, 0x10) /* MOVUPS/MOVSS/MOVUPD/MOVD via prefix */ \ + X(X86_2B_MOVMR128, 0x11) /* MOVUPS/MOVSS/MOVUPD/MOVD via prefix */ \ + X(X86_2B_MOVLRM, 0x12) /* MOV(H)LPS/MOVLPD/MOVDDUP/MOVSLDUP */ \ + X(X86_2B_MOVLMR, 0x13) /* MOVLP{S,D} */ \ + X(X86_2B_UNPCKL, 0x14) /* UNPCKLP{S,D} */ \ + X(X86_2B_UNPCKH, 0x15) /* UNPCKHPS/UNPCKHPD */ \ + X(X86_2B_MOVHRM, 0x16) /* MOV(L)HPS/MOVHPD/MOVSHDUP */ \ + X(X86_2B_MOVHMR, 0x17) /* MOVHPS/MOVHPD */ \ + X(X86_2B_MOVARM, 0x28) /* MOVAP{S,D} via prefix */ \ + X(X86_2B_MOVAMR, 0x29) /* MOVAP{S,D} */ \ + X(X86_2B_CVTIF64, 0x2A) /* CVTxI2x{S,D} */ \ + X(X86_2B_MOVNT, 0x2B) /* MOVNTP{S,D} */ \ + X(X86_2B_CVTFT64, 0x2C) /* CVTTx{S,D}2xI */ \ + X(X86_2B_CVTFI64, 0x2D) /* CVTx{S,D}2xI */ \ + X(X86_2B_UCOMI, 0x2E) /* UCOMIS{S,D} */ \ + X(X86_2B_COMI, 0x2F) /* COMIS{S,D} */ \ + X(X86_2B_MOVMSK, 0x50) /* MOVMSDKP{S,D} */ \ + X(X86_2B_SQRT, 0x51) /* SQRT{P,S}{S,D} */ \ + X(X86_2B_RSQRT, 0x52) /* RSQRT{P,S}{S,D} */ \ + X(X86_2B_RCP, 0x53) /* RCP{P,S}S */ \ + X(X86_2B_AND, 0x54) /* ANDP{S,D} */ \ + X(X86_2B_ANDN, 0x55) /* ANDNP{S,D} */ \ + X(X86_2B_OR, 0x56) /* ORP{S,D} */ \ + X(X86_2B_XOR, 0x57) /* XORP{S,D} */ \ + X(X86_2B_ADD, 0x58) /* ADD{P,S}{S,D} */ \ + X(X86_2B_MUL, 0x59) /* MUL{P,S}{S,D} */ \ + X(X86_2B_CVTFF128, 0x5A) /* CVTxS2xD/CVTxS2xS */ \ + X(X86_2B_CVTFI128, 0x5B) /* CVTDQ2PS/CVTPS2DQ/CVTTPS2DQ */ \ + X(X86_2B_SUB, 0x5C) /* SUB{P,S}{S,D} */ \ + X(X86_2B_DIV, 0x5D) /* DIV{P,S}{S,D} */ \ + X(X86_2B_MIN, 0x5E) /* MIN{P,S}{S,D} */ \ + X(X86_2B_MAX, 0x5F) /* MAX{P,S}{S,D} */ \ + X(X86_2B_PUNPCKLBW, 0x60) \ + X(X86_2B_PUNPCKLBD, 0x61) \ + X(X86_2B_PUNPCKLDQ, 0x62) \ + X(X86_2B_PACKSSWB, 0x63) \ + X(X86_2B_PCMPGTB, 0x64) \ + X(X86_2B_PCMPGTW, 0x65) \ + X(X86_2B_PCMPGTD, 0x66) \ + X(X86_2B_PACKUSWB, 0x67) \ + X(X86_2B_PUNPCKHBW, 0x68) \ + X(X86_2B_PUNPCKHWD, 0x69) \ + X(X86_2B_PUNPCKHDQ, 0x6A) \ + X(X86_2B_PACKSSDW, 0x6B) \ + X(X86_2B_PUNPCKLQDQ, 0x6C) \ + X(X86_2B_PUNPCKHQDQ, 0x6D) \ + X(X86_2B_MOVDRM, 0x6E) \ + X(X86_2B_MOVQRM, 0x6F) /* MOVQ/MOVDQA/MOVDQU */ \ + X(X86_2B_PCMPEQB, 0x74) \ + X(X86_2B_PCMPEQW, 0x75) \ + X(X86_2B_PCMPEQD, 0x76) \ + X(X86_2B_MOVDMR, 0x7E) \ + X(X86_2B_MOVQMR, 0x7F) \ + X(X86_2B_MOVNTI, 0xC3) \ + X(X86_2B_ADDSUB, 0xD0) /* ADDSUBP{S,D} */ \ + X(X86_2B_PSRLW, 0xD1) \ + X(X86_2B_PSRLD, 0xD2) \ + X(X86_2B_PSRLQ, 0xD3) \ + X(X86_2B_PADDQ, 0xD4) \ + X(X86_2B_PMULLW, 0xD5) \ + X(X86_2B_MOVQRR, 0xD6) /* MOVQ(m,r)/MOVQ2DQ/MOVQ2DQ based on prefix */ \ + X(X86_2B_PMOVMSKB, 0xD7) /* MOVQ2DQ/MOVDQ2Q */ \ + X(X86_2B_PSUBUSB, 0xD8) \ + X(X86_2B_PSUBUSW, 0xD9) \ + X(X86_2B_PMINUB, 0xDA) \ + X(X86_2B_PAND, 0xDB) \ + X(X86_2B_PADDUSB, 0xDC) \ + X(X86_2B_PADDUSW, 0xDD) \ + X(X86_2B_PMAXUB, 0xDE) \ + X(X86_2B_PANDN, 0xDF) \ + X(X86_2B_PAVGB, 0xE0) \ + X(X86_2B_PSRAW, 0xE1) \ + X(X86_2B_PSRAD, 0xE2) \ + X(X86_2B_PAVGW, 0xE3) \ + X(X86_2B_PMULHUW, 0xE4) \ + X(X86_2B_PMULHW, 0xE5) \ + X(X86_2B_CVTQ, 0xE6) /* CVTPD2DQ/CVTTPD2DQ/CVTDQ2PD */ \ + X(X86_2B_MOVNTQ, 0xE7) \ + X(X86_2B_PSUBSB, 0xE8) \ + X(X86_2B_PSUBSW, 0xE9) \ + X(X86_2B_PMINSB, 0xEA) \ + X(X86_2B_PMINSW, 0xEB) \ + X(X86_2B_PADDSB, 0xEC) \ + X(X86_2B_PADDSW, 0xED) \ + X(X86_2B_PMAXSW, 0xEE) \ + X(X86_2B_PXOR, 0xEF) \ + X(X86_2B_LDDQU, 0xF0) \ + X(X86_2B_PSLLW, 0xF1) \ + X(X86_2B_PSLLD, 0xF2) \ + X(X86_2B_PSLLQ, 0xF3) \ + X(X86_2B_PMULUDQ, 0xF4) \ + X(X86_2B_PMADDWD, 0xF5) \ + X(X86_2B_PSABDW, 0xF6) \ + X(X86_2B_MASKMOVQ, 0xF7) \ + X(X86_2B_PSUBB, 0xF8) \ + X(X86_2B_PSUBW, 0xF9) \ + X(X86_2B_PSUBD, 0xFA) \ + X(X86_2B_PSUBQ, 0xFB) \ + X(X86_2B_PADDB, 0xFC) \ + X(X86_2B_PADDW, 0xFD) \ + X(X86_2B_PADDD, 0xFE) /* Second bytes of opcodes with a ModRM and a 1-byte immediate operand */ #define X86_OPS_2BYTE_MRM_I8(X) \ X(X86_2B_SHLDMRI, 0xA4) \ X(X86_2B_SHRDMRI, 0xAC) \ - X(X86_2B_BTXMI, 0xBA) /* BT/BTS/BTR/BTC depending on MRM.reg (4-7) */ + X(X86_2B_BTXMI, 0xBA) /* BT/BTS/BTR/BTC depending on MRM.reg (4-7) */ \ + /* -- MMX/SSE1/SSE2 instructions -- */ \ + X(X86_2B_PSHUF, 0x70) /* PSHUFW/PSHUFLW/PSHUFHW/PSHUFD via MRM.reg */ \ + X(X86_2B_PSWI, 0x71) /* PSRLW/PSRAW/PSLLW via MRM.reg */ \ + X(X86_2B_PSDI, 0x72) /* PSRLD/PSRAD/PSLLD via MRM.reg */ \ + X(X86_2B_PSQI, 0x73) /* PSRLQ/PSRAQ/PSLLQ via MRM.reg */ \ + X(X86_2B_CMPSI, 0xC2) /* CMP{P,S}{S,D} via prefix */ \ + X(X86_2B_PINSRW, 0xC4) \ + X(X86_2B_PEXTRW, 0xC5) \ + X(X86_2B_SHUF, 0xC6) /* SHUFP{S,D} */ \ #define X86_OPS_2BYTE(X) \ X86_OPS_2BYTE_NO(X) \ |