From 47af1d5d8f103b88a624a13b8fa691e02217db1a Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Fri, 10 Nov 2006 02:13:40 +0000 Subject: [PATCH] 2006-11-09 H.J. Lu * i386-dis.c (twobyte_uses_SSE_prefix): Renamed to ... (twobyte_uses_DATA_prefix): This. (twobyte_uses_REPNZ_prefix): New. (twobyte_uses_REPZ_prefix): Likewise. (threebyte_0x38_uses_DATA_prefix): Likewise. (threebyte_0x38_uses_REPNZ_prefix): Likewise. (threebyte_0x38_uses_REPZ_prefix): Likewise. (threebyte_0x3a_uses_DATA_prefix): Likewise. (threebyte_0x3a_uses_REPNZ_prefix): Likewise. (threebyte_0x3a_uses_REPZ_prefix): Likewise. (print_insn): Updated checking usages of DATA/REPNZ/REPZ prefixes. --- opcodes/ChangeLog | 15 ++++ opcodes/i386-dis.c | 244 ++++++++++++++++++++++++++++++++++++++++++++++++++--- 2 files changed, 245 insertions(+), 14 deletions(-) diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog index 1322bf727..6499aea2c 100644 --- a/opcodes/ChangeLog +++ b/opcodes/ChangeLog @@ -1,3 +1,18 @@ +2006-11-09 H.J. Lu + + * i386-dis.c (twobyte_uses_SSE_prefix): Renamed to ... + (twobyte_uses_DATA_prefix): This. + (twobyte_uses_REPNZ_prefix): New. + (twobyte_uses_REPZ_prefix): Likewise. + (threebyte_0x38_uses_DATA_prefix): Likewise. + (threebyte_0x38_uses_REPNZ_prefix): Likewise. + (threebyte_0x38_uses_REPZ_prefix): Likewise. + (threebyte_0x3a_uses_DATA_prefix): Likewise. + (threebyte_0x3a_uses_REPNZ_prefix): Likewise. + (threebyte_0x3a_uses_REPZ_prefix): Likewise. + (print_insn): Updated checking usages of DATA/REPNZ/REPZ + prefixes. + 2006-11-06 Troy Rollo * ppc-opc.c: Restore COM to mfcr wrongly removed 2003-07-04. diff --git a/opcodes/i386-dis.c b/opcodes/i386-dis.c index c1e67c407..0da2446f1 100644 --- a/opcodes/i386-dis.c +++ b/opcodes/i386-dis.c @@ -1158,7 +1158,7 @@ static const unsigned char twobyte_has_modrm[256] = { /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ }; -static const unsigned char twobyte_uses_SSE_prefix[256] = { +static const unsigned char twobyte_uses_DATA_prefix[256] = { /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ /* ------------------------------- */ /* 00 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0f */ @@ -1181,6 +1181,196 @@ static const unsigned char twobyte_uses_SSE_prefix[256] = { /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ }; +static const unsigned char twobyte_uses_REPNZ_prefix[256] = { + /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ + /* ------------------------------- */ + /* 00 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0f */ + /* 10 */ 1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1f */ + /* 20 */ 0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0, /* 2f */ + /* 30 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 3f */ + /* 40 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 4f */ + /* 50 */ 0,1,0,0,0,0,0,0,1,1,1,0,1,1,1,1, /* 5f */ + /* 60 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 6f */ + /* 70 */ 1,0,0,0,0,0,0,0,1,1,0,0,1,1,0,0, /* 7f */ + /* 80 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 8f */ + /* 90 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 9f */ + /* a0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* af */ + /* b0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* bf */ + /* c0 */ 0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0, /* cf */ + /* d0 */ 1,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0, /* df */ + /* e0 */ 0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0, /* ef */ + /* f0 */ 1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* ff */ + /* ------------------------------- */ + /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ +}; + +static const unsigned char twobyte_uses_REPZ_prefix[256] = { + /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ + /* ------------------------------- */ + /* 00 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0f */ + /* 10 */ 1,1,1,0,0,0,1,0,0,0,0,0,0,0,0,0, /* 1f */ + /* 20 */ 0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0, /* 2f */ + /* 30 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 3f */ + /* 40 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 4f */ + /* 50 */ 0,1,1,1,0,0,0,0,1,1,1,1,1,1,1,1, /* 5f */ + /* 60 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1, /* 6f */ + /* 70 */ 1,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1, /* 7f */ + /* 80 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 8f */ + /* 90 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 9f */ + /* a0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* af */ + /* b0 */ 0,0,0,0,0,0,0,0,1,0,0,0,0,1,0,0, /* bf */ + /* c0 */ 0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0, /* cf */ + /* d0 */ 0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0, /* df */ + /* e0 */ 0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0, /* ef */ + /* f0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* ff */ + /* ------------------------------- */ + /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ +}; + +/* This is used to determine if opcode 0f 38 XX uses DATA prefix. */ +static const unsigned char threebyte_0x38_uses_DATA_prefix[256] = { + /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ + /* ------------------------------- */ + /* 00 */ 1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0, /* 0f */ + /* 10 */ 0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0, /* 1f */ + /* 20 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 2f */ + /* 30 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 3f */ + /* 40 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 4f */ + /* 50 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 5f */ + /* 60 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 6f */ + /* 70 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 7f */ + /* 80 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 8f */ + /* 90 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 9f */ + /* a0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* af */ + /* b0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* bf */ + /* c0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* cf */ + /* d0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* df */ + /* e0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* ef */ + /* f0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* ff */ + /* ------------------------------- */ + /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ +}; + +/* This is used to determine if opcode 0f 38 XX uses REPNZ prefix. */ +static const unsigned char threebyte_0x38_uses_REPNZ_prefix[256] = { + /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ + /* ------------------------------- */ + /* 00 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0f */ + /* 10 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1f */ + /* 20 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 2f */ + /* 30 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 3f */ + /* 40 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 4f */ + /* 50 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 5f */ + /* 60 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 6f */ + /* 70 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 7f */ + /* 80 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 8f */ + /* 90 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 9f */ + /* a0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* af */ + /* b0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* bf */ + /* c0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* cf */ + /* d0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* df */ + /* e0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* ef */ + /* f0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* ff */ + /* ------------------------------- */ + /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ +}; + +/* This is used to determine if opcode 0f 38 XX uses REPZ prefix. */ +static const unsigned char threebyte_0x38_uses_REPZ_prefix[256] = { + /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ + /* ------------------------------- */ + /* 00 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0f */ + /* 10 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1f */ + /* 20 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 2f */ + /* 30 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 3f */ + /* 40 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 4f */ + /* 50 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 5f */ + /* 60 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 6f */ + /* 70 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 7f */ + /* 80 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 8f */ + /* 90 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 9f */ + /* a0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* af */ + /* b0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* bf */ + /* c0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* cf */ + /* d0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* df */ + /* e0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* ef */ + /* f0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* ff */ + /* ------------------------------- */ + /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ +}; + +/* This is used to determine if opcode 0f 3a XX uses DATA prefix. */ +static const unsigned char threebyte_0x3a_uses_DATA_prefix[256] = { + /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ + /* ------------------------------- */ + /* 00 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1, /* 0f */ + /* 10 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1f */ + /* 20 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 2f */ + /* 30 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 3f */ + /* 40 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 4f */ + /* 50 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 5f */ + /* 60 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 6f */ + /* 70 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 7f */ + /* 80 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 8f */ + /* 90 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 9f */ + /* a0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* af */ + /* b0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* bf */ + /* c0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* cf */ + /* d0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* df */ + /* e0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* ef */ + /* f0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* ff */ + /* ------------------------------- */ + /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ +}; + +/* This is used to determine if opcode 0f 3a XX uses REPNZ prefix. */ +static const unsigned char threebyte_0x3a_uses_REPNZ_prefix[256] = { + /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ + /* ------------------------------- */ + /* 00 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0f */ + /* 10 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1f */ + /* 20 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 2f */ + /* 30 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 3f */ + /* 40 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 4f */ + /* 50 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 5f */ + /* 60 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 6f */ + /* 70 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 7f */ + /* 80 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 8f */ + /* 90 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 9f */ + /* a0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* af */ + /* b0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* bf */ + /* c0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* cf */ + /* d0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* df */ + /* e0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* ef */ + /* f0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* ff */ + /* ------------------------------- */ + /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ +}; + +/* This is used to determine if opcode 0f 3a XX uses REPZ prefix. */ +static const unsigned char threebyte_0x3a_uses_REPZ_prefix[256] = { + /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ + /* ------------------------------- */ + /* 00 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0f */ + /* 10 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1f */ + /* 20 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 2f */ + /* 30 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 3f */ + /* 40 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 4f */ + /* 50 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 5f */ + /* 60 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 6f */ + /* 70 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 7f */ + /* 80 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 8f */ + /* 90 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 9f */ + /* a0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* af */ + /* b0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* bf */ + /* c0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* cf */ + /* d0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* df */ + /* e0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* ef */ + /* f0 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* ff */ + /* ------------------------------- */ + /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ +}; + static char obuf[100]; static char *obufp; static char scratchbuf[100]; @@ -2649,10 +2839,12 @@ print_insn (bfd_vma pc, disassemble_info *info) int i; char *first, *second, *third, *fourth; int needcomma; - unsigned char uses_SSE_prefix, uses_LOCK_prefix; + unsigned char uses_DATA_prefix, uses_LOCK_prefix; + unsigned char uses_REPNZ_prefix, uses_REPZ_prefix; int sizeflag; const char *p; struct dis_private priv; + unsigned char op; if (info->mach == bfd_mach_x86_64_intel_syntax || info->mach == bfd_mach_x86_64) @@ -2820,37 +3012,62 @@ print_insn (bfd_vma pc, disassemble_info *info) return 1; } + op = 0; if (*codep == 0x0f) { + unsigned char threebyte; FETCH_DATA (info, codep + 2); - dp = &dis386_twobyte[*++codep]; + threebyte = *++codep; + dp = &dis386_twobyte[threebyte]; need_modrm = twobyte_has_modrm[*codep]; - uses_SSE_prefix = twobyte_uses_SSE_prefix[*codep]; + uses_DATA_prefix = twobyte_uses_DATA_prefix[*codep]; + uses_REPNZ_prefix = twobyte_uses_REPNZ_prefix[*codep]; + uses_REPZ_prefix = twobyte_uses_REPZ_prefix[*codep]; uses_LOCK_prefix = (*codep & ~0x02) == 0x20; + codep++; + if (dp->name == NULL && dp->bytemode1 == IS_3BYTE_OPCODE) + { + FETCH_DATA (info, codep + 2); + op = *codep++; + switch (threebyte) + { + case 0x38: + uses_DATA_prefix = threebyte_0x38_uses_DATA_prefix[op]; + uses_REPNZ_prefix = threebyte_0x38_uses_REPNZ_prefix[op]; + uses_REPZ_prefix = threebyte_0x38_uses_REPZ_prefix[op]; + break; + case 0x3a: + uses_DATA_prefix = threebyte_0x3a_uses_DATA_prefix[op]; + uses_REPNZ_prefix = threebyte_0x3a_uses_REPNZ_prefix[op]; + uses_REPZ_prefix = threebyte_0x3a_uses_REPZ_prefix[op]; + break; + default: + break; + } + } } else { dp = &dis386[*codep]; need_modrm = onebyte_has_modrm[*codep]; - uses_SSE_prefix = 0; + uses_DATA_prefix = 0; + uses_REPNZ_prefix = 0; + uses_REPZ_prefix = 0; uses_LOCK_prefix = 0; + codep++; } - /*"lzcnt"=0xBD and "popcnt"=0xB8 are the only two non-sse - instruction which uses F3 in the opcode without any "rep(z|nz)"*/ - if (!uses_SSE_prefix && (prefixes & PREFIX_REPZ) && *codep != 0xBD && *codep != 0xB8) + if (!uses_REPZ_prefix && (prefixes & PREFIX_REPZ)) { oappend ("repz "); used_prefixes |= PREFIX_REPZ; } - if (!uses_SSE_prefix && (prefixes & PREFIX_REPNZ) && *codep != 0xBD && *codep != 0xB8) + if (!uses_REPNZ_prefix && (prefixes & PREFIX_REPNZ)) { oappend ("repnz "); used_prefixes |= PREFIX_REPNZ; } - codep++; - if (!uses_LOCK_prefix && (prefixes & PREFIX_LOCK)) { oappend ("lock "); @@ -2870,7 +3087,7 @@ print_insn (bfd_vma pc, disassemble_info *info) } } - if (!uses_SSE_prefix && (prefixes & PREFIX_DATA)) + if (!uses_DATA_prefix && (prefixes & PREFIX_DATA)) { sizeflag ^= DFLAG; if (dp->bytemode3 == cond_jump_mode @@ -2887,8 +3104,7 @@ print_insn (bfd_vma pc, disassemble_info *info) if (dp->name == NULL && dp->bytemode1 == IS_3BYTE_OPCODE) { - FETCH_DATA (info, codep + 2); - dp = &three_byte_table[dp->bytemode2][*codep++]; + dp = &three_byte_table[dp->bytemode2][op]; mod = (*codep >> 6) & 3; reg = (*codep >> 3) & 7; rm = *codep & 7; -- 2.11.4.GIT