X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=opcodes%2Fi386-dis.c;h=40be2261daed51676833480478bf13ce266c2ce1;hb=1596541188b1a4080ab7bce6578c09626193dfd0;hp=4fb487d5a498876a825f636fbf46a5a34d6536b2;hpb=a1cfb73ee02dc8dfa54dd3d7c633f28a7faf1a1d;p=deliverable%2Fbinutils-gdb.git diff --git a/opcodes/i386-dis.c b/opcodes/i386-dis.c index 4fb487d5a4..40be2261da 100644 --- a/opcodes/i386-dis.c +++ b/opcodes/i386-dis.c @@ -91,7 +91,8 @@ static void OP_M (int, int); static void OP_VMX (int, int); static void OP_0fae (int, int); static void OP_0f07 (int, int); -static void NOP_Fixup (int, int); +static void NOP_Fixup1 (int, int); +static void NOP_Fixup2 (int, int); static void OP_3DNowSuffix (int, int); static void OP_SIMD_Suffix (int, int); static void SIMD_Fixup (int, int); @@ -101,6 +102,7 @@ static void INVLPG_Fixup (int, int); static void BadOp (void); static void SEG_Fixup (int, int); static void VMX_Fixup (int, int); +static void REP_Fixup (int, int); struct dis_private { /* Points to first byte not fetched. */ @@ -276,7 +278,6 @@ fetch_data (struct disassemble_info *info, bfd_byte *addr) #define eSI OP_IMREG, eSI_reg #define eDI OP_IMREG, eDI_reg #define AL OP_IMREG, al_reg -#define AL OP_IMREG, al_reg #define CL OP_IMREG, cl_reg #define DL OP_IMREG, dl_reg #define BL OP_IMREG, bl_reg @@ -315,6 +316,15 @@ fetch_data (struct disassemble_info *info, bfd_byte *addr) #define OPSUF OP_3DNowSuffix, 0 #define OPSIMD OP_SIMD_Suffix, 0 +/* Used handle "rep" prefix for string instructions. */ +#define Xbr REP_Fixup, eSI_reg +#define Xvr REP_Fixup, eSI_reg +#define Ybr REP_Fixup, eDI_reg +#define Yvr REP_Fixup, eDI_reg +#define indirDXr REP_Fixup, indir_dx_reg +#define ALr REP_Fixup, al_reg +#define eAXr REP_Fixup, eAX_reg + #define cond_jump_flag NULL, cond_jump_mode #define loop_jcxz_flag NULL, loop_jcxz_mode @@ -388,6 +398,7 @@ fetch_data (struct disassemble_info *info, bfd_byte *addr) #define USE_GROUPS 2 #define USE_PREFIX_USER_TABLE 3 #define X86_64_SPECIAL 4 +#define IS_3BYTE_OPCODE 5 #define FLOAT NULL, NULL, FLOATCODE, NULL, 0, NULL, 0 @@ -408,11 +419,11 @@ fetch_data (struct disassemble_info *info, bfd_byte *addr) #define GRP7 NULL, NULL, USE_GROUPS, NULL, 14, NULL, 0 #define GRP8 NULL, NULL, USE_GROUPS, NULL, 15, NULL, 0 #define GRP9 NULL, NULL, USE_GROUPS, NULL, 16, NULL, 0 -#define GRP10 NULL, NULL, USE_GROUPS, NULL, 17, NULL, 0 -#define GRP11 NULL, NULL, USE_GROUPS, NULL, 18, NULL, 0 -#define GRP12 NULL, NULL, USE_GROUPS, NULL, 19, NULL, 0 -#define GRP13 NULL, NULL, USE_GROUPS, NULL, 20, NULL, 0 -#define GRP14 NULL, NULL, USE_GROUPS, NULL, 21, NULL, 0 +#define GRP12 NULL, NULL, USE_GROUPS, NULL, 17, NULL, 0 +#define GRP13 NULL, NULL, USE_GROUPS, NULL, 18, NULL, 0 +#define GRP14 NULL, NULL, USE_GROUPS, NULL, 19, NULL, 0 +#define GRP15 NULL, NULL, USE_GROUPS, NULL, 20, NULL, 0 +#define GRP16 NULL, NULL, USE_GROUPS, NULL, 21, NULL, 0 #define GRPAMD NULL, NULL, USE_GROUPS, NULL, 22, NULL, 0 #define GRPPADLCK1 NULL, NULL, USE_GROUPS, NULL, 23, NULL, 0 #define GRPPADLCK2 NULL, NULL, USE_GROUPS, NULL, 24, NULL, 0 @@ -453,6 +464,9 @@ fetch_data (struct disassemble_info *info, bfd_byte *addr) #define X86_64_0 NULL, NULL, X86_64_SPECIAL, NULL, 0, NULL, 0 +#define THREE_BYTE_0 NULL, NULL, IS_3BYTE_OPCODE, NULL, 0, NULL, 0 +#define THREE_BYTE_1 NULL, NULL, IS_3BYTE_OPCODE, NULL, 1, NULL, 0 + typedef void (*op_rtn) (int bytemode, int sizeflag); struct dis386 { @@ -625,10 +639,10 @@ static const struct dis386 dis386[] = { { "imulS", Gv, Ev, Iv }, { "pushT", sIb, XX, XX }, { "imulS", Gv, Ev, sIb }, - { "ins{b||b|}", Yb, indirDX, XX }, - { "ins{R||R|}", Yv, indirDX, XX }, - { "outs{b||b|}", indirDX, Xb, XX }, - { "outs{R||R|}", indirDX, Xv, XX }, + { "ins{b||b|}", Ybr, indirDX, XX }, + { "ins{R||R|}", Yvr, indirDX, XX }, + { "outs{b||b|}", indirDXr, Xb, XX }, + { "outs{R||R|}", indirDXr, Xv, XX }, /* 70 */ { "joH", Jb, XX, cond_jump_flag }, { "jnoH", Jb, XX, cond_jump_flag }, @@ -666,7 +680,7 @@ static const struct dis386 dis386[] = { { "movQ", Sw, Sv, XX }, { "popU", stackEv, XX, XX }, /* 90 */ - { "nop", NOP_Fixup, 0, XX, XX }, + { "xchgS", NOP_Fixup1, eAX_reg, NOP_Fixup2, eAX_reg, XX }, { "xchgS", RMeCX, eAX, XX }, { "xchgS", RMeDX, eAX, XX }, { "xchgS", RMeBX, eAX, XX }, @@ -688,17 +702,17 @@ static const struct dis386 dis386[] = { { "movS", eAX, Ov, XX }, { "movB", Ob, AL, XX }, { "movS", Ov, eAX, XX }, - { "movs{b||b|}", Yb, Xb, XX }, - { "movs{R||R|}", Yv, Xv, XX }, + { "movs{b||b|}", Ybr, Xb, XX }, + { "movs{R||R|}", Yvr, Xv, XX }, { "cmps{b||b|}", Xb, Yb, XX }, { "cmps{R||R|}", Xv, Yv, XX }, /* a8 */ { "testB", AL, Ib, XX }, { "testS", eAX, Iv, XX }, - { "stosB", Yb, AL, XX }, - { "stosS", Yv, eAX, XX }, - { "lodsB", AL, Xb, XX }, - { "lodsS", eAX, Xv, XX }, + { "stosB", Ybr, AL, XX }, + { "stosS", Yvr, eAX, XX }, + { "lodsB", ALr, Xb, XX }, + { "lodsS", eAXr, Xv, XX }, { "scasB", AL, Yb, XX }, { "scasS", eAX, Yv, XX }, /* b0 */ @@ -822,14 +836,14 @@ static const struct dis386 dis386_twobyte[] = { { PREGRP31 }, { "movhpX", EX, XM, SIMD_Fixup, 'l' }, /* 18 */ - { GRP14 }, - { "(bad)", XX, XX, XX }, + { GRP16 }, { "(bad)", XX, XX, XX }, { "(bad)", XX, XX, XX }, { "(bad)", XX, XX, XX }, { "(bad)", XX, XX, XX }, { "(bad)", XX, XX, XX }, { "(bad)", XX, XX, XX }, + { "nopQ", Ev, XX, XX }, /* 20 */ { "movZ", Rm, Cm, XX }, { "movZ", Rm, Dm, XX }, @@ -858,9 +872,9 @@ static const struct dis386 dis386_twobyte[] = { { "(bad)", XX, XX, XX }, { "(bad)", XX, XX, XX }, /* 38 */ + { THREE_BYTE_0 }, { "(bad)", XX, XX, XX }, - { "(bad)", XX, XX, XX }, - { "(bad)", XX, XX, XX }, + { THREE_BYTE_1 }, { "(bad)", XX, XX, XX }, { "(bad)", XX, XX, XX }, { "(bad)", XX, XX, XX }, @@ -922,9 +936,9 @@ static const struct dis386 dis386_twobyte[] = { { PREGRP19 }, /* 70 */ { PREGRP22 }, - { GRP10 }, - { GRP11 }, { GRP12 }, + { GRP13 }, + { GRP14 }, { "pcmpeqb", MX, EM, XX }, { "pcmpeqw", MX, EM, XX }, { "pcmpeqd", MX, EM, XX }, @@ -990,7 +1004,7 @@ static const struct dis386 dis386_twobyte[] = { { "btsS", Ev, Gv, XX }, { "shrdS", Ev, Gv, Ib }, { "shrdS", Ev, Gv, CL }, - { GRP13 }, + { GRP15 }, { "imulS", Gv, Ev, XX }, /* b0 */ { "cmpxchgB", Eb, Gb, XX }, @@ -1111,9 +1125,9 @@ static const unsigned char twobyte_has_modrm[256] = { /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ /* ------------------------------- */ /* 00 */ 1,1,1,1,0,0,0,0,0,0,0,0,0,1,0,1, /* 0f */ - /* 10 */ 1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0, /* 1f */ + /* 10 */ 1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,1, /* 1f */ /* 20 */ 1,1,1,1,1,0,1,0,1,1,1,1,1,1,1,1, /* 2f */ - /* 30 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 3f */ + /* 30 */ 0,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0, /* 3f */ /* 40 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 4f */ /* 50 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 5f */ /* 60 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 6f */ @@ -1136,7 +1150,7 @@ static const unsigned char twobyte_uses_SSE_prefix[256] = { /* 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 */ 0,0,0,0,0,0,0,0,0,0,1,0,1,1,0,0, /* 2f */ - /* 30 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 3f */ + /* 30 */ 0,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0, /* 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 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1, /* 6f */ @@ -1387,8 +1401,8 @@ static const struct dis386 grps[][8] = { }, /* GRP7 */ { - { "sgdtIQ", VMX_Fixup, 0, XX, XX }, - { "sidtIQ", PNI_Fixup, 0, XX, XX }, + { "sgdt{Q|IQ||}", VMX_Fixup, 0, XX, XX }, + { "sidt{Q|IQ||}", PNI_Fixup, 0, XX, XX }, { "lgdt{Q|Q||}", M, XX, XX }, { "lidt{Q|Q||}", SVME_Fixup, 0, XX, XX }, { "smswQ", Ev, XX, XX }, @@ -1418,7 +1432,7 @@ static const struct dis386 grps[][8] = { { "", VM, XX, XX }, /* See OP_VMX. */ { "vmptrst", Eq, XX, XX }, }, - /* GRP10 */ + /* GRP12 */ { { "(bad)", XX, XX, XX }, { "(bad)", XX, XX, XX }, @@ -1429,7 +1443,7 @@ static const struct dis386 grps[][8] = { { "psllw", MS, Ib, XX }, { "(bad)", XX, XX, XX }, }, - /* GRP11 */ + /* GRP13 */ { { "(bad)", XX, XX, XX }, { "(bad)", XX, XX, XX }, @@ -1440,7 +1454,7 @@ static const struct dis386 grps[][8] = { { "pslld", MS, Ib, XX }, { "(bad)", XX, XX, XX }, }, - /* GRP12 */ + /* GRP14 */ { { "(bad)", XX, XX, XX }, { "(bad)", XX, XX, XX }, @@ -1451,7 +1465,7 @@ static const struct dis386 grps[][8] = { { "psllq", MS, Ib, XX }, { "pslldq", MS, Ib, XX }, }, - /* GRP13 */ + /* GRP15 */ { { "fxsave", Ev, XX, XX }, { "fxrstor", Ev, XX, XX }, @@ -1462,7 +1476,7 @@ static const struct dis386 grps[][8] = { { "mfence", OP_0fae, 0, XX, XX }, { "clflush", OP_0fae, 0, XX, XX }, }, - /* GRP14 */ + /* GRP16 */ { { "prefetchnta", Ev, XX, XX }, { "prefetcht0", Ev, XX, XX }, @@ -1749,6 +1763,79 @@ static const struct dis386 x86_64_table[][2] = { }, }; +static const struct dis386 three_byte_table[][32] = { + /* THREE_BYTE_0 */ + { + { "pshufb", MX, EM, XX }, + { "phaddw", MX, EM, XX }, + { "phaddd", MX, EM, XX }, + { "phaddsw", MX, EM, XX }, + { "pmaddubsw", MX, EM, XX }, + { "phsubw", MX, EM, XX }, + { "phsubd", MX, EM, XX }, + { "phsubsw", MX, EM, XX }, + { "psignb", MX, EM, XX }, + { "psignw", MX, EM, XX }, + { "psignd", MX, EM, XX }, + { "pmulhrsw", MX, EM, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "pabsb", MX, EM, XX }, + { "pabsw", MX, EM, XX }, + { "pabsd", MX, EM, XX }, + { "(bad)", XX, XX, XX } + }, + /* THREE_BYTE_1 */ + { + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "palignr", MX, EM, Ib }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX } + }, +}; + #define INTERNAL_DISASSEMBLER_ERROR _("") static void @@ -2206,7 +2293,15 @@ print_insn (bfd_vma pc, disassemble_info *info) } } - if (need_modrm) + if (dp->name == NULL && dp->bytemode1 == IS_3BYTE_OPCODE) + { + FETCH_DATA (info, codep + 2); + dp = &three_byte_table[dp->bytemode2][*codep++]; + mod = (*codep >> 6) & 3; + reg = (*codep >> 3) & 7; + rm = *codep & 7; + } + else if (need_modrm) { FETCH_DATA (info, codep + 1); mod = (*codep >> 6) & 3; @@ -4266,12 +4361,29 @@ OP_0fae (int bytemode, int sizeflag) OP_E (bytemode, sizeflag); } +/* NOP is an alias of "xchg %ax,%ax" in 16bit mode, "xchg %eax,%eax" in + 32bit mode and "xchg %rax,%rax" in 64bit mode. NOP with REPZ prefix + is called PAUSE. We display "xchg %ax,%ax" instead of "data16 nop". + */ + static void -NOP_Fixup (int bytemode ATTRIBUTE_UNUSED, int sizeflag ATTRIBUTE_UNUSED) +NOP_Fixup1 (int bytemode, int sizeflag) { - /* NOP with REPZ prefix is called PAUSE. */ if (prefixes == PREFIX_REPZ) strcpy (obuf, "pause"); + else if (prefixes == PREFIX_DATA + || ((rex & REX_MODE64) && rex != 0x48)) + OP_REG (bytemode, sizeflag); + else + strcpy (obuf, "nop"); +} + +static void +NOP_Fixup2 (int bytemode, int sizeflag) +{ + if (prefixes == PREFIX_DATA + || ((rex & REX_MODE64) && rex != 0x48)) + OP_IMREG (bytemode, sizeflag); } static const char *const Suffix3DNow[] = { @@ -4692,3 +4804,76 @@ OP_VMX (int bytemode, int sizeflag) strcpy (obuf, "vmptrld"); OP_E (bytemode, sizeflag); } + +static void +REP_Fixup (int bytemode, int sizeflag) +{ + /* The 0xf3 prefix should be displayed as "rep" for ins, outs, movs, + lods and stos. */ + size_t ilen = 0; + + if (prefixes & PREFIX_REPZ) + switch (*insn_codep) + { + case 0x6e: /* outsb */ + case 0x6f: /* outsw/outsl */ + case 0xa4: /* movsb */ + case 0xa5: /* movsw/movsl/movsq */ + if (!intel_syntax) + ilen = 5; + else + ilen = 4; + break; + case 0xaa: /* stosb */ + case 0xab: /* stosw/stosl/stosq */ + case 0xac: /* lodsb */ + case 0xad: /* lodsw/lodsl/lodsq */ + if (!intel_syntax && (sizeflag & SUFFIX_ALWAYS)) + ilen = 5; + else + ilen = 4; + break; + case 0x6c: /* insb */ + case 0x6d: /* insl/insw */ + if (!intel_syntax) + ilen = 4; + else + ilen = 3; + break; + default: + abort (); + break; + } + + if (ilen != 0) + { + size_t olen; + char *p; + + olen = strlen (obuf); + p = obuf + olen - ilen - 1 - 4; + /* Handle "repz [addr16|addr32]". */ + if ((prefixes & PREFIX_ADDR)) + p -= 1 + 6; + + memmove (p + 3, p + 4, olen - (p + 3 - obuf)); + } + + switch (bytemode) + { + case al_reg: + case eAX_reg: + case indir_dx_reg: + OP_IMREG (bytemode, sizeflag); + break; + case eDI_reg: + OP_ESreg (bytemode, sizeflag); + break; + case eSI_reg: + OP_DSreg (bytemode, sizeflag); + break; + default: + abort (); + break; + } +}