X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=opcodes%2Fi386-dis.c;h=4c8949f9a7a2e11f32d4e8a12117176cd1ca288a;hb=19ca80ba578d7849bc921f80339f757f91eb4eae;hp=47455e37e4461ccb731b090e97ca1c15f3b864ce;hpb=3e7d61b225eae88144dfaff1ba52d2452766074f;p=deliverable%2Fbinutils-gdb.git diff --git a/opcodes/i386-dis.c b/opcodes/i386-dis.c index 47455e37e4..4c8949f9a7 100644 --- a/opcodes/i386-dis.c +++ b/opcodes/i386-dis.c @@ -35,7 +35,7 @@ #include "sysdep.h" #include "opintl.h" -#define MAXLEN 20 +#define MAXLEN 15 #include @@ -101,6 +101,7 @@ 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. */ @@ -115,8 +116,14 @@ struct dis_private { when we can. */ #define FWAIT_OPCODE (0x9b) -/* Set to 1 for 64bit mode disassembly. */ -static int mode_64bit; +enum address_mode +{ + mode_16bit, + mode_32bit, + mode_64bit +}; + +enum address_mode address_mode; /* Flags for the prefixes for the current instruction. See below. */ static int prefixes; @@ -173,10 +180,13 @@ fetch_data (struct disassemble_info *info, bfd_byte *addr) struct dis_private *priv = (struct dis_private *) info->private_data; bfd_vma start = priv->insn_start + (priv->max_fetched - priv->the_buffer); - status = (*info->read_memory_func) (start, - priv->max_fetched, - addr - priv->max_fetched, - info); + if (addr <= priv->the_buffer + MAXLEN) + status = (*info->read_memory_func) (start, + priv->max_fetched, + addr - priv->max_fetched, + info); + else + status = -1; if (status != 0) { /* If we did manage to read at least one byte, then @@ -267,7 +277,6 @@ 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 @@ -306,6 +315,15 @@ 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 @@ -379,6 +397,7 @@ 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 @@ -444,6 +463,9 @@ 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 { @@ -482,6 +504,7 @@ struct dis386 { 'W' => print 'b' or 'w' ("w" or "de" in intel mode) 'X' => print 's', 'd' depending on data16 prefix (for XMM) 'Y' => 'q' if instruction has an REX 64bit overwrite prefix + 'Z' => print 'q' in 64bit mode and behave as 'L' otherwise Many of the above letters print nothing in Intel mode. See "putop" for the details. @@ -615,10 +638,10 @@ 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 }, @@ -678,17 +701,17 @@ 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 */ @@ -821,10 +844,10 @@ static const struct dis386 dis386_twobyte[] = { { "(bad)", XX, XX, XX }, { "(bad)", XX, XX, XX }, /* 20 */ - { "movL", Rm, Cm, XX }, - { "movL", Rm, Dm, XX }, - { "movL", Cm, Rm, XX }, - { "movL", Dm, Rm, XX }, + { "movZ", Rm, Cm, XX }, + { "movZ", Rm, Dm, XX }, + { "movZ", Cm, Rm, XX }, + { "movZ", Dm, Rm, XX }, { "movL", Rd, Td, XX }, { "(bad)", XX, XX, XX }, { "movL", Td, Rd, XX }, @@ -848,9 +871,9 @@ 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 }, @@ -1103,7 +1126,7 @@ static const unsigned char twobyte_has_modrm[256] = { /* 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 */ /* 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 */ @@ -1126,7 +1149,7 @@ 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 */ @@ -1377,8 +1400,8 @@ 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 }, @@ -1739,6 +1762,79 @@ 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 @@ -1772,7 +1868,7 @@ ckprefix (void) case 0x4d: case 0x4e: case 0x4f: - if (mode_64bit) + if (address_mode == mode_64bit) newrex = *codep; else return; @@ -1898,7 +1994,7 @@ prefix_name (int pref, int sizeflag) case 0x66: return (sizeflag & DFLAG) ? "data16" : "data32"; case 0x67: - if (mode_64bit) + if (address_mode == mode_64bit) return (sizeflag & AFLAG) ? "addr32" : "addr64"; else return (sizeflag & AFLAG) ? "addr16" : "addr32"; @@ -1970,8 +2066,11 @@ print_insn (bfd_vma pc, disassemble_info *info) const char *p; struct dis_private priv; - mode_64bit = (info->mach == bfd_mach_x86_64_intel_syntax - || info->mach == bfd_mach_x86_64); + if (info->mach == bfd_mach_x86_64_intel_syntax + || info->mach == bfd_mach_x86_64) + address_mode = mode_64bit; + else + address_mode = mode_32bit; if (intel_syntax == (char) -1) intel_syntax = (info->mach == bfd_mach_i386_i386_intel_syntax @@ -1991,17 +2090,17 @@ print_insn (bfd_vma pc, disassemble_info *info) { if (strncmp (p, "x86-64", 6) == 0) { - mode_64bit = 1; + address_mode = mode_64bit; priv.orig_sizeflag = AFLAG | DFLAG; } else if (strncmp (p, "i386", 4) == 0) { - mode_64bit = 0; + address_mode = mode_32bit; priv.orig_sizeflag = AFLAG | DFLAG; } else if (strncmp (p, "i8086", 5) == 0) { - mode_64bit = 0; + address_mode = mode_16bit; priv.orig_sizeflag = 0; } else if (strncmp (p, "intel", 5) == 0) @@ -2170,7 +2269,7 @@ print_insn (bfd_vma pc, disassemble_info *info) sizeflag ^= AFLAG; if (dp->bytemode3 != loop_jcxz_mode || intel_syntax) { - if ((sizeflag & AFLAG) || mode_64bit) + if ((sizeflag & AFLAG) || address_mode == mode_64bit) oappend ("addr32 "); else oappend ("addr16 "); @@ -2193,7 +2292,15 @@ 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; @@ -2237,7 +2344,8 @@ print_insn (bfd_vma pc, disassemble_info *info) break; case X86_64_SPECIAL: - dp = &x86_64_table[dp->bytemode2][mode_64bit]; + index = address_mode == mode_64bit ? 1 : 0; + dp = &x86_64_table[dp->bytemode2][index]; break; default: @@ -2679,6 +2787,7 @@ dofloat (int sizeflag) putop (float_mem[fp_indx], sizeflag); obufp = op1out; + op_ad = 2; OP_E (float_mem_mode[fp_indx], sizeflag); return; } @@ -2700,9 +2809,12 @@ dofloat (int sizeflag) putop (dp->name, sizeflag); obufp = op1out; + op_ad = 2; if (dp->op1) (*dp->op1) (dp->bytemode1, sizeflag); + obufp = op2out; + op_ad = 1; if (dp->op2) (*dp->op2) (dp->bytemode2, sizeflag); } @@ -2711,7 +2823,7 @@ dofloat (int sizeflag) static void OP_ST (int bytemode ATTRIBUTE_UNUSED, int sizeflag ATTRIBUTE_UNUSED) { - oappend ("%st"); + oappend ("%st" + intel_syntax); } static void @@ -2739,7 +2851,7 @@ putop (const char *template, int sizeflag) alt = 0; if (intel_syntax) alt += 1; - if (mode_64bit) + if (address_mode == mode_64bit) alt += 2; while (alt != 0) { @@ -2795,7 +2907,7 @@ putop (const char *template, int sizeflag) } break; case 'E': /* For jcxz/jecxz */ - if (mode_64bit) + if (address_mode == mode_64bit) { if (sizeflag & AFLAG) *obufp++ = 'r'; @@ -2813,9 +2925,9 @@ putop (const char *template, int sizeflag) if ((prefixes & PREFIX_ADDR) || (sizeflag & SUFFIX_ALWAYS)) { if (sizeflag & AFLAG) - *obufp++ = mode_64bit ? 'q' : 'l'; + *obufp++ = address_mode == mode_64bit ? 'q' : 'l'; else - *obufp++ = mode_64bit ? 'l' : 'w'; + *obufp++ = address_mode == mode_64bit ? 'l' : 'w'; used_prefixes |= (prefixes & PREFIX_ADDR); } break; @@ -2839,6 +2951,15 @@ putop (const char *template, int sizeflag) break; *obufp++ = 'l'; break; + case 'Z': + if (intel_syntax) + break; + if (address_mode == mode_64bit && (sizeflag & SUFFIX_ALWAYS)) + { + *obufp++ = 'q'; + break; + } + /* Fall through. */ case 'L': if (intel_syntax) break; @@ -2861,7 +2982,7 @@ putop (const char *template, int sizeflag) case 'T': if (intel_syntax) break; - if (mode_64bit && (sizeflag & DFLAG)) + if (address_mode == mode_64bit && (sizeflag & DFLAG)) { *obufp++ = 'q'; break; @@ -2890,7 +3011,7 @@ putop (const char *template, int sizeflag) case 'U': if (intel_syntax) break; - if (mode_64bit && (sizeflag & DFLAG)) + if (address_mode == mode_64bit && (sizeflag & DFLAG)) { if (mod != 3 || (sizeflag & SUFFIX_ALWAYS)) *obufp++ = 'q'; @@ -2950,7 +3071,7 @@ putop (const char *template, int sizeflag) case 'V': if (intel_syntax) break; - if (mode_64bit && (sizeflag & DFLAG)) + if (address_mode == mode_64bit && (sizeflag & DFLAG)) { if (sizeflag & SUFFIX_ALWAYS) *obufp++ = 'q'; @@ -3080,7 +3201,7 @@ OP_indirE (int bytemode, int sizeflag) static void print_operand_value (char *buf, int hex, bfd_vma disp) { - if (mode_64bit) + if (address_mode == mode_64bit) { if (hex) { @@ -3147,7 +3268,7 @@ intel_operand_size (int bytemode, int sizeflag) oappend ("WORD PTR "); break; case stack_v_mode: - if (mode_64bit && (sizeflag & DFLAG)) + if (address_mode == mode_64bit && (sizeflag & DFLAG)) { oappend ("QWORD PTR "); used_prefixes |= (prefixes & PREFIX_DATA); @@ -3172,7 +3293,7 @@ intel_operand_size (int bytemode, int sizeflag) oappend ("QWORD PTR "); break; case m_mode: - if (mode_64bit) + if (address_mode == mode_64bit) oappend ("QWORD PTR "); else oappend ("DWORD PTR "); @@ -3230,13 +3351,13 @@ OP_E (int bytemode, int sizeflag) oappend (names64[rm + add]); break; case m_mode: - if (mode_64bit) + if (address_mode == mode_64bit) oappend (names64[rm + add]); else oappend (names32[rm + add]); break; case stack_v_mode: - if (mode_64bit && (sizeflag & DFLAG)) + if (address_mode == mode_64bit && (sizeflag & DFLAG)) { oappend (names64[rm + add]); used_prefixes |= (prefixes & PREFIX_DATA); @@ -3270,7 +3391,7 @@ OP_E (int bytemode, int sizeflag) intel_operand_size (bytemode, sizeflag); append_seg (); - if ((sizeflag & AFLAG) || mode_64bit) /* 32 bit address mode */ + if ((sizeflag & AFLAG) || address_mode == mode_64bit) /* 32 bit address mode */ { int havesib; int havebase; @@ -3287,7 +3408,7 @@ OP_E (int bytemode, int sizeflag) havesib = 1; FETCH_DATA (the_info, codep + 1); index = (*codep >> 3) & 7; - if (mode_64bit || index != 0x4) + if (address_mode == mode_64bit || index != 0x4) /* When INDEX == 0x4 in 32 bit mode, SCALE is ignored. */ scale = (*codep >> 6) & 3; base = *codep & 7; @@ -3304,7 +3425,7 @@ OP_E (int bytemode, int sizeflag) if ((base & 7) == 5) { havebase = 0; - if (mode_64bit && !havesib) + if (address_mode == mode_64bit && !havesib) riprel = 1; disp = get32s (); } @@ -3339,7 +3460,7 @@ OP_E (int bytemode, int sizeflag) oappend ("rip + "); *obufp = '\0'; if (havebase) - oappend (mode_64bit && (sizeflag & AFLAG) + oappend (address_mode == mode_64bit && (sizeflag & AFLAG) ? names64[base] : names32[base]); if (havesib) { @@ -3350,7 +3471,7 @@ OP_E (int bytemode, int sizeflag) *obufp++ = separator_char; *obufp = '\0'; } - oappend (mode_64bit && (sizeflag & AFLAG) + oappend (address_mode == mode_64bit && (sizeflag & AFLAG) ? names64[index] : names32[index]); } if (scale != 0 || (!intel_syntax && index != 4)) @@ -3511,7 +3632,7 @@ OP_G (int bytemode, int sizeflag) used_prefixes |= (prefixes & PREFIX_DATA); break; case m_mode: - if (mode_64bit) + if (address_mode == mode_64bit) oappend (names64[reg + add]); else oappend (names32[reg + add]); @@ -3591,7 +3712,7 @@ static void set_op (bfd_vma op, int riprel) { op_index[op_ad] = op_ad; - if (mode_64bit) + if (address_mode == mode_64bit) { op_address[op_ad] = op; op_riprel[op_ad] = riprel; @@ -3639,7 +3760,7 @@ OP_REG (int code, int sizeflag) break; case rAX_reg: case rCX_reg: case rDX_reg: case rBX_reg: case rSP_reg: case rBP_reg: case rSI_reg: case rDI_reg: - if (mode_64bit && (sizeflag & DFLAG)) + if (address_mode == mode_64bit && (sizeflag & DFLAG)) { s = names64[code - rAX_reg + add]; break; @@ -3725,7 +3846,7 @@ OP_I (int bytemode, int sizeflag) mask = 0xff; break; case q_mode: - if (mode_64bit) + if (address_mode == mode_64bit) { op = get32s (); break; @@ -3773,7 +3894,7 @@ OP_I64 (int bytemode, int sizeflag) bfd_signed_vma op; bfd_signed_vma mask = -1; - if (!mode_64bit) + if (address_mode != mode_64bit) { OP_I (bytemode, sizeflag); return; @@ -3941,7 +4062,7 @@ OP_OFF (int bytemode, int sizeflag) intel_operand_size (bytemode, sizeflag); append_seg (); - if ((sizeflag & AFLAG) || mode_64bit) + if ((sizeflag & AFLAG) || address_mode == mode_64bit) off = get32 (); else off = get16 (); @@ -3964,7 +4085,7 @@ OP_OFF64 (int bytemode, int sizeflag) { bfd_vma off; - if (!mode_64bit) + if (address_mode != mode_64bit) { OP_OFF (bytemode, sizeflag); return; @@ -3996,7 +4117,7 @@ ptr_reg (int code, int sizeflag) *obufp++ = open_char; used_prefixes |= (prefixes & PREFIX_ADDR); - if (mode_64bit) + if (address_mode == mode_64bit) { if (!(sizeflag & AFLAG)) s = names32[code - eAX_reg]; @@ -4050,7 +4171,7 @@ OP_C (int dummy ATTRIBUTE_UNUSED, int sizeflag ATTRIBUTE_UNUSED) USED_REX (REX_EXTX); add = 8; } - else if (!mode_64bit && (prefixes & PREFIX_LOCK)) + else if (address_mode != mode_64bit && (prefixes & PREFIX_LOCK)) { used_prefixes |= PREFIX_LOCK; add = 8; @@ -4412,18 +4533,31 @@ PNI_Fixup (int extrachar ATTRIBUTE_UNUSED, int sizeflag) if (mod == 3 && reg == 1 && rm <= 1) { /* Override "sidt". */ - char *p = obuf + strlen (obuf) - 4; + size_t olen = strlen (obuf); + char *p = obuf + olen - 4; + const char **names = (address_mode == mode_64bit + ? names64 : names32); /* We might have a suffix when disassembling with -Msuffix. */ if (*p == 'i') --p; + /* Remove "addr16/addr32" if we aren't in Intel mode. */ + if (!intel_syntax + && (prefixes & PREFIX_ADDR) + && olen >= (4 + 7) + && *(p - 1) == ' ' + && strncmp (p - 7, "addr", 4) == 0 + && (strncmp (p - 3, "16", 2) == 0 + || strncmp (p - 3, "32", 2) == 0)) + p -= 7; + if (rm) { /* mwait %eax,%ecx */ strcpy (p, "mwait"); if (!intel_syntax) - strcpy (op1out, names32[0]); + strcpy (op1out, names[0]); } else { @@ -4431,21 +4565,23 @@ PNI_Fixup (int extrachar ATTRIBUTE_UNUSED, int sizeflag) strcpy (p, "monitor"); if (!intel_syntax) { - if (!mode_64bit) - strcpy (op1out, names32[0]); - else if (!(prefixes & PREFIX_ADDR)) - strcpy (op1out, names64[0]); + const char **op1_names; + if (!(prefixes & PREFIX_ADDR)) + op1_names = (address_mode == mode_16bit + ? names16 : names); else { - strcpy (op1out, names32[0]); + op1_names = (address_mode != mode_32bit + ? names32 : names16); used_prefixes |= PREFIX_ADDR; } - strcpy (op3out, names32[2]); + strcpy (op1out, op1_names[0]); + strcpy (op3out, names[2]); } } if (!intel_syntax) { - strcpy (op2out, names32[1]); + strcpy (op2out, names[1]); two_source_ops = 1; } @@ -4513,7 +4649,7 @@ SVME_Fixup (int bytemode, int sizeflag) case 0xda: case 0xdb: *obufp++ = open_char; - if (mode_64bit || (sizeflag & AFLAG)) + if (address_mode == mode_64bit || (sizeflag & AFLAG)) alt = names32[0]; else alt = names16[0]; @@ -4650,3 +4786,76 @@ 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; + } +}