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-rw-r--r--include/opcode/i386.h150
1 files changed, 68 insertions, 82 deletions
diff --git a/include/opcode/i386.h b/include/opcode/i386.h
index d399f4eb2..7bddbed4e 100644
--- a/include/opcode/i386.h
+++ b/include/opcode/i386.h
@@ -17,35 +17,28 @@ You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-/* The SystemV/386 SVR3.2 assembler, and probably all AT&T derived
- ix86 Unix assemblers, generate floating point instructions with
- reversed source and destination registers in certain cases.
- Unfortunately, gcc and possibly many other programs use this
- reversed syntax, so we're stuck with it.
+/* The UnixWare assembler, and probably other AT&T derived ix86 Unix
+ assemblers, generate floating point instructions with reversed
+ source and destination registers in certain cases. Unfortunately,
+ gcc and possibly many other programs use this reversed syntax, so
+ we're stuck with it.
- eg. `fsub %st(3),%st' results in st = st - st(3) as expected, but
- `fsub %st,%st(3)' results in st(3) = st - st(3), rather than
- the expected st(3) = st(3) - st
+ eg. `fsub %st(3),%st' results in st <- st - st(3) as expected, but
+ `fsub %st,%st(3)' results in st(3) <- st - st(3), rather than
+ the expected st(3) <- st(3) - st !
This happens with all the non-commutative arithmetic floating point
operations with two register operands, where the source register is
- %st, and destination register is %st(i). See FloatDR below.
+ %st, and destination register is %st(i). Look for FloatDR below. */
- The affected opcode map is dceX, dcfX, deeX, defX. */
-
-#ifndef SYSV386_COMPAT
+#ifndef UNIXWARE_COMPAT
/* Set non-zero for broken, compatible instructions. Set to zero for
- non-broken opcodes at your peril. gcc generates SystemV/386
+ non-broken opcodes at your peril. gcc generates UnixWare
compatible instructions. */
-#define SYSV386_COMPAT 1
-#endif
-#ifndef OLDGCC_COMPAT
-/* Set non-zero to cater for old (<= 2.8.1) versions of gcc that could
- generate nonsense fsubp, fsubrp, fdivp and fdivrp with operands
- reversed. */
-#define OLDGCC_COMPAT SYSV386_COMPAT
+#define UNIXWARE_COMPAT 1
#endif
+
static const template i386_optab[] = {
#define X None
@@ -70,16 +63,13 @@ static const template i386_optab[] = {
#define sl_FP (sl_Suf|IgnoreSize)
#define sld_FP (sld_Suf|IgnoreSize)
#define sldx_FP (sldx_Suf|IgnoreSize)
-#if SYSV386_COMPAT
-/* Someone forgot that the FloatR bit reverses the operation when not
- equal to the FloatD bit. ie. Changing only FloatD results in the
- destination being swapped *and* the direction being reversed. */
+#if UNIXWARE_COMPAT
#define FloatDR FloatD
#else
#define FloatDR (FloatD|FloatR)
#endif
-/* Move instructions. */
+/* move instructions */
#define MOV_AX_DISP32 0xa0
{ "mov", 2, 0xa0, X, bwl_Suf|D|W, { Disp16|Disp32, Acc, 0 } },
{ "mov", 2, 0x88, X, bwl_Suf|D|W|Modrm, { Reg, Reg|AnyMem, 0 } },
@@ -92,12 +82,12 @@ static const template i386_optab[] = {
the implementation defined value is zero). */
{ "mov", 2, 0x8c, X, wl_Suf|Modrm, { SReg3|SReg2, WordReg|WordMem, 0 } },
{ "mov", 2, 0x8e, X, wl_Suf|Modrm|IgnoreSize, { WordReg|WordMem, SReg3|SReg2, 0 } },
-/* Move to/from control debug registers. */
+/* move to/from control debug registers */
{ "mov", 2, 0x0f20, X, l_Suf|D|Modrm|IgnoreSize, { Control, Reg32|InvMem, 0} },
{ "mov", 2, 0x0f21, X, l_Suf|D|Modrm|IgnoreSize, { Debug, Reg32|InvMem, 0} },
{ "mov", 2, 0x0f24, X, l_Suf|D|Modrm|IgnoreSize, { Test, Reg32|InvMem, 0} },
-/* Move with sign extend. */
+/* move with sign extend */
/* "movsbl" & "movsbw" must not be unified into "movsb" to avoid
conflict with the "movs" string move instruction. */
{"movsbl", 2, 0x0fbe, X, NoSuf|Modrm, { Reg8|ByteMem, Reg32, 0} },
@@ -107,38 +97,40 @@ static const template i386_optab[] = {
{"movsx", 2, 0x0fbf, X, w_Suf|Modrm|IgnoreSize, { Reg16|ShortMem, Reg32, 0} },
{"movsx", 2, 0x0fbe, X, b_Suf|Modrm, { Reg8|ByteMem, WordReg, 0} },
-/* Move with zero extend. */
+/* move with zero extend */
{"movzb", 2, 0x0fb6, X, wl_Suf|Modrm, { Reg8|ByteMem, WordReg, 0} },
{"movzwl", 2, 0x0fb7, X, NoSuf|Modrm, { Reg16|ShortMem, Reg32, 0} },
/* Intel Syntax */
{"movzx", 2, 0x0fb7, X, w_Suf|Modrm|IgnoreSize, { Reg16|ShortMem, Reg32, 0} },
{"movzx", 2, 0x0fb6, X, b_Suf|Modrm, { Reg8|ByteMem, WordReg, 0} },
-/* Push instructions. */
+/* push instructions */
{"push", 1, 0x50, X, wl_Suf|ShortForm|DefaultSize, { WordReg, 0, 0 } },
{"push", 1, 0xff, 6, wl_Suf|Modrm|DefaultSize, { WordReg|WordMem, 0, 0 } },
{"push", 1, 0x6a, X, wl_Suf|DefaultSize, { Imm8S, 0, 0} },
{"push", 1, 0x68, X, wl_Suf|DefaultSize, { Imm16|Imm32, 0, 0} },
{"push", 1, 0x06, X, wl_Suf|Seg2ShortForm|DefaultSize, { SReg2, 0, 0 } },
{"push", 1, 0x0fa0, X, wl_Suf|Seg3ShortForm|DefaultSize, { SReg3, 0, 0 } },
+/* push all */
{"pusha", 0, 0x60, X, wl_Suf|DefaultSize, { 0, 0, 0 } },
-/* Pop instructions. */
+/* pop instructions */
{"pop", 1, 0x58, X, wl_Suf|ShortForm|DefaultSize, { WordReg, 0, 0 } },
{"pop", 1, 0x8f, 0, wl_Suf|Modrm|DefaultSize, { WordReg|WordMem, 0, 0 } },
#define POP_SEG_SHORT 0x07
{"pop", 1, 0x07, X, wl_Suf|Seg2ShortForm|DefaultSize, { SReg2, 0, 0 } },
{"pop", 1, 0x0fa1, X, wl_Suf|Seg3ShortForm|DefaultSize, { SReg3, 0, 0 } },
+/* pop all */
{"popa", 0, 0x61, X, wl_Suf|DefaultSize, { 0, 0, 0 } },
-/* Exchange instructions.
- xchg commutes: we allow both operand orders. */
+/* xchg exchange instructions
+ xchg commutes: we allow both operand orders */
{"xchg", 2, 0x90, X, wl_Suf|ShortForm, { WordReg, Acc, 0 } },
{"xchg", 2, 0x90, X, wl_Suf|ShortForm, { Acc, WordReg, 0 } },
{"xchg", 2, 0x86, X, bwl_Suf|W|Modrm, { Reg, Reg|AnyMem, 0 } },
{"xchg", 2, 0x86, X, bwl_Suf|W|Modrm, { Reg|AnyMem, Reg, 0 } },
-/* In/out from ports. */
+/* in/out from ports */
{"in", 2, 0xe4, X, bwl_Suf|W, { Imm8, Acc, 0 } },
{"in", 2, 0xec, X, bwl_Suf|W, { InOutPortReg, Acc, 0 } },
{"in", 1, 0xe4, X, bwl_Suf|W, { Imm8, 0, 0 } },
@@ -148,17 +140,17 @@ static const template i386_optab[] = {
{"out", 1, 0xe6, X, bwl_Suf|W, { Imm8, 0, 0 } },
{"out", 1, 0xee, X, bwl_Suf|W, { InOutPortReg, 0, 0 } },
-/* Load effective address. */
+/* load effective address */
{"lea", 2, 0x8d, X, wl_Suf|Modrm, { WordMem, WordReg, 0 } },
-/* Load segment registers from memory. */
+/* load segment registers from memory */
{"lds", 2, 0xc5, X, wl_Suf|Modrm, { WordMem, WordReg, 0} },
{"les", 2, 0xc4, X, wl_Suf|Modrm, { WordMem, WordReg, 0} },
{"lfs", 2, 0x0fb4, X, wl_Suf|Modrm, { WordMem, WordReg, 0} },
{"lgs", 2, 0x0fb5, X, wl_Suf|Modrm, { WordMem, WordReg, 0} },
{"lss", 2, 0x0fb2, X, wl_Suf|Modrm, { WordMem, WordReg, 0} },
-/* Flags register instructions. */
+/* flags register instructions */
{"clc", 0, 0xf8, X, NoSuf, { 0, 0, 0} },
{"cld", 0, 0xfc, X, NoSuf, { 0, 0, 0} },
{"cli", 0, 0xfa, X, NoSuf, { 0, 0, 0} },
@@ -172,7 +164,7 @@ static const template i386_optab[] = {
{"std", 0, 0xfd, X, NoSuf, { 0, 0, 0} },
{"sti", 0, 0xfb, X, NoSuf, { 0, 0, 0} },
-/* Arithmetic. */
+/* arithmetic */
{"add", 2, 0x00, X, bwl_Suf|D|W|Modrm, { Reg, Reg|AnyMem, 0} },
{"add", 2, 0x83, 0, wl_Suf|Modrm, { Imm8S, WordReg|WordMem, 0} },
{"add", 2, 0x04, X, bwl_Suf|W, { Imm, Acc, 0} },
@@ -219,7 +211,7 @@ static const template i386_optab[] = {
{"xor", 2, 0x34, X, bwl_Suf|W, { Imm, Acc, 0} },
{"xor", 2, 0x80, 6, bwl_Suf|W|Modrm, { Imm, Reg|AnyMem, 0} },
-/* iclr with 1 operand is really xor with 2 operands. */
+/* iclr with 1 operand is really xor with 2 operands. */
{"clr", 1, 0x30, X, bwl_Suf|W|Modrm|regKludge, { Reg, 0, 0 } },
{"adc", 2, 0x10, X, bwl_Suf|D|W|Modrm, { Reg, Reg|AnyMem, 0} },
@@ -239,13 +231,13 @@ static const template i386_optab[] = {
{"aam", 0, 0xd40a, X, NoSuf, { 0, 0, 0} },
{"aam", 1, 0xd4, X, NoSuf, { Imm8S, 0, 0} },
-/* Conversion insns. */
-/* Intel naming */
+/* conversion insns */
+/* conversion: intel naming */
{"cbw", 0, 0x98, X, NoSuf|Size16, { 0, 0, 0} },
{"cwde", 0, 0x98, X, NoSuf|Size32, { 0, 0, 0} },
{"cwd", 0, 0x99, X, NoSuf|Size16, { 0, 0, 0} },
{"cdq", 0, 0x99, X, NoSuf|Size32, { 0, 0, 0} },
-/* AT&T naming */
+/* att naming */
{"cbtw", 0, 0x98, X, NoSuf|Size16, { 0, 0, 0} },
{"cwtl", 0, 0x98, X, NoSuf|Size32, { 0, 0, 0} },
{"cwtd", 0, 0x99, X, NoSuf|Size16, { 0, 0, 0} },
@@ -318,7 +310,7 @@ static const template i386_optab[] = {
{"sar", 2, 0xd2, 7, bwl_Suf|W|Modrm, { ShiftCount, Reg|AnyMem, 0} },
{"sar", 1, 0xd0, 7, bwl_Suf|W|Modrm, { Reg|AnyMem, 0, 0} },
-/* Control transfer instructions. */
+/* control transfer instructions */
{"call", 1, 0xe8, X, wl_Suf|JumpDword|DefaultSize, { Disp16|Disp32, 0, 0} },
{"call", 1, 0xff, 2, wl_Suf|Modrm|DefaultSize, { WordReg|WordMem|JumpAbsolute, 0, 0} },
/* Intel Syntax */
@@ -345,7 +337,7 @@ static const template i386_optab[] = {
{"enter", 2, 0xc8, X, wl_Suf|DefaultSize, { Imm16, Imm8, 0} },
{"leave", 0, 0xc9, X, wl_Suf|DefaultSize, { 0, 0, 0} },
-/* Conditional jumps. */
+/* conditional jumps */
{"jo", 1, 0x70, X, NoSuf|Jump, { Disp, 0, 0} },
{"jno", 1, 0x71, X, NoSuf|Jump, { Disp, 0, 0} },
{"jb", 1, 0x72, X, NoSuf|Jump, { Disp, 0, 0} },
@@ -391,7 +383,7 @@ static const template i386_optab[] = {
{"loopnz", 1, 0xe0, X, wl_Suf|JumpByte, { Disp, 0, 0} },
{"loopne", 1, 0xe0, X, wl_Suf|JumpByte, { Disp, 0, 0} },
-/* Set byte on flag instructions. */
+/* set byte on flag instructions */
{"seto", 1, 0x0f90, 0, b_Suf|Modrm, { Reg8|ByteMem, 0, 0} },
{"setno", 1, 0x0f91, 0, b_Suf|Modrm, { Reg8|ByteMem, 0, 0} },
{"setb", 1, 0x0f92, 0, b_Suf|Modrm, { Reg8|ByteMem, 0, 0} },
@@ -423,7 +415,7 @@ static const template i386_optab[] = {
{"setnle", 1, 0x0f9f, 0, b_Suf|Modrm, { Reg8|ByteMem, 0, 0} },
{"setg", 1, 0x0f9f, 0, b_Suf|Modrm, { Reg8|ByteMem, 0, 0} },
-/* String manipulation. */
+/* string manipulation */
{"cmps", 0, 0xa6, X, bwld_Suf|W|IsString, { 0, 0, 0} },
{"cmps", 2, 0xa6, X, bwld_Suf|W|IsString, { AnyMem|EsSeg, AnyMem, 0} },
{"scmp", 0, 0xa6, X, bwld_Suf|W|IsString, { 0, 0, 0} },
@@ -457,7 +449,7 @@ static const template i386_optab[] = {
{"xlat", 0, 0xd7, X, b_Suf|IsString, { 0, 0, 0} },
{"xlat", 1, 0xd7, X, b_Suf|IsString, { AnyMem, 0, 0} },
-/* Bit manipulation. */
+/* bit manipulation */
{"bsf", 2, 0x0fbc, X, wl_Suf|Modrm, { WordReg|WordMem, WordReg, 0} },
{"bsr", 2, 0x0fbd, X, wl_Suf|Modrm, { WordReg|WordMem, WordReg, 0} },
{"bt", 2, 0x0fa3, X, wl_Suf|Modrm, { WordReg, WordReg|WordMem, 0} },
@@ -469,25 +461,25 @@ static const template i386_optab[] = {
{"bts", 2, 0x0fab, X, wl_Suf|Modrm, { WordReg, WordReg|WordMem, 0} },
{"bts", 2, 0x0fba, 5, wl_Suf|Modrm, { Imm8, WordReg|WordMem, 0} },
-/* Interrupts & op. sys insns. */
+/* interrupts & op. sys insns */
/* See gas/config/tc-i386.c for conversion of 'int $3' into the special
- int 3 insn. */
+ int 3 insn. */
#define INT_OPCODE 0xcd
#define INT3_OPCODE 0xcc
{"int", 1, 0xcd, X, NoSuf, { Imm8, 0, 0} },
{"int3", 0, 0xcc, X, NoSuf, { 0, 0, 0} },
{"into", 0, 0xce, X, NoSuf, { 0, 0, 0} },
{"iret", 0, 0xcf, X, wl_Suf, { 0, 0, 0} },
-/* i386sl, i486sl, later 486, and Pentium. */
+/* i386sl, i486sl, later 486, and Pentium */
{"rsm", 0, 0x0faa, X, NoSuf, { 0, 0, 0} },
{"bound", 2, 0x62, X, wl_Suf|Modrm, { WordReg, WordMem, 0} },
{"hlt", 0, 0xf4, X, NoSuf, { 0, 0, 0} },
-/* nop is actually 'xchgl %eax, %eax'. */
+/* nop is actually 'xchgl %eax, %eax' */
{"nop", 0, 0x90, X, NoSuf, { 0, 0, 0} },
-/* Protection control. */
+/* protection control */
{"arpl", 2, 0x63, X, w_Suf|Modrm|IgnoreSize,{ Reg16, Reg16|ShortMem, 0} },
{"lar", 2, 0x0f02, X, wl_Suf|Modrm, { WordReg|WordMem, WordReg, 0} },
{"lgdt", 1, 0x0f01, 2, wl_Suf|Modrm, { WordMem, 0, 0} },
@@ -506,7 +498,7 @@ static const template i386_optab[] = {
{"verr", 1, 0x0f00, 4, w_Suf|Modrm|IgnoreSize,{ Reg16|ShortMem, 0, 0} },
{"verw", 1, 0x0f00, 5, w_Suf|Modrm|IgnoreSize,{ Reg16|ShortMem, 0, 0} },
-/* Floating point instructions. */
+/* floating point instructions */
/* load */
{"fld", 1, 0xd9c0, X, FP|ShortForm, { FloatReg, 0, 0} }, /* register */
@@ -516,7 +508,7 @@ static const template i386_optab[] = {
{"fld", 1, 0xdb, 5, x_FP|Modrm, { LLongMem, 0, 0} }, /* %st0 <-- mem efloat */
{"fild", 1, 0xdf, 0, sl_Suf|FloatMF|Modrm, { ShortMem|LongMem, 0, 0} }, /* %st0 <-- mem word(16)/dword(32) */
/* Intel Syntax */
-{"fildd", 1, 0xdf, 5, FP|Modrm, { LLongMem, 0, 0} }, /* %st0 <-- mem qword (64) */
+{"fild", 1, 0xdf, 5, d_Suf|IgnoreSize|Modrm,{ LLongMem, 0, 0} }, /* %st0 <-- mem qword (64) */
{"fildq", 1, 0xdf, 5, FP|Modrm, { LLongMem, 0, 0} }, /* %st0 <-- mem qword (64) */
{"fildll", 1, 0xdf, 5, FP|Modrm, { LLongMem, 0, 0} }, /* %st0 <-- mem qword (64) */
{"fldt", 1, 0xdb, 5, FP|Modrm, { LLongMem, 0, 0} }, /* %st0 <-- mem efloat */
@@ -536,7 +528,7 @@ static const template i386_optab[] = {
{"fstp", 1, 0xdb, 7, x_FP|Modrm, { LLongMem, 0, 0} }, /* %st0 --> mem efloat */
{"fistp", 1, 0xdf, 3, sl_FP|FloatMF|Modrm, { ShortMem|LongMem, 0, 0} }, /* %st0 --> mem word(16)/dword(32) */
/* Intel Syntax */
-{"fistpd", 1, 0xdf, 7, FP|Modrm, { LLongMem, 0, 0} }, /* %st0 --> mem qword (64) */
+{"fistp", 1, 0xdf, 7, d_FP|Modrm, { LLongMem, 0, 0} }, /* %st0 --> mem qword (64) */
{"fistpq", 1, 0xdf, 7, FP|Modrm, { LLongMem, 0, 0} }, /* %st0 --> mem qword (64) */
{"fistpll",1, 0xdf, 7, FP|Modrm, { LLongMem, 0, 0} }, /* %st0 --> mem qword (64) */
{"fstpt", 1, 0xdb, 7, FP|Modrm, { LLongMem, 0, 0} }, /* %st0 --> mem efloat */
@@ -585,7 +577,7 @@ static const template i386_optab[] = {
/* add */
{"fadd", 2, 0xd8c0, X, FP|ShortForm|FloatD, { FloatReg, FloatAcc, 0} },
{"fadd", 1, 0xd8c0, X, FP|ShortForm, { FloatReg, 0, 0} }, /* alias for fadd %st(i), %st */
-#if SYSV386_COMPAT
+#if UNIXWARE_COMPAT
{"fadd", 0, 0xdec1, X, FP|Ugh, { 0, 0, 0} }, /* alias for faddp */
#endif
{"fadd", 1, 0xd8, 0, sld_FP|FloatMF|Modrm, { LongMem|LLongMem, 0, 0} },
@@ -599,19 +591,17 @@ static const template i386_optab[] = {
/* subtract */
{"fsub", 2, 0xd8e0, X, FP|ShortForm|FloatDR, { FloatReg, FloatAcc, 0} },
{"fsub", 1, 0xd8e0, X, FP|ShortForm, { FloatReg, 0, 0} },
-#if SYSV386_COMPAT
+#if UNIXWARE_COMPAT
{"fsub", 0, 0xdee1, X, FP|Ugh, { 0, 0, 0} }, /* alias for fsubp */
#endif
{"fsub", 1, 0xd8, 4, sld_FP|FloatMF|Modrm, { LongMem|LLongMem, 0, 0} },
{"fisub", 1, 0xde, 4, sl_FP|FloatMF|Modrm, { ShortMem|LongMem, 0, 0} },
-#if SYSV386_COMPAT
+#if UNIXWARE_COMPAT
{"fsubp", 2, 0xdee0, X, FP|ShortForm, { FloatAcc, FloatReg, 0} },
{"fsubp", 1, 0xdee0, X, FP|ShortForm, { FloatReg, 0, 0} },
{"fsubp", 0, 0xdee1, X, FP, { 0, 0, 0} },
-#if OLDGCC_COMPAT
{"fsubp", 2, 0xdee0, X, FP|ShortForm|Ugh, { FloatReg, FloatAcc, 0} },
-#endif
#else
{"fsubp", 2, 0xdee8, X, FP|ShortForm, { FloatAcc, FloatReg, 0} },
{"fsubp", 1, 0xdee8, X, FP|ShortForm, { FloatReg, 0, 0} },
@@ -621,19 +611,17 @@ static const template i386_optab[] = {
/* subtract reverse */
{"fsubr", 2, 0xd8e8, X, FP|ShortForm|FloatDR, { FloatReg, FloatAcc, 0} },
{"fsubr", 1, 0xd8e8, X, FP|ShortForm, { FloatReg, 0, 0} },
-#if SYSV386_COMPAT
+#if UNIXWARE_COMPAT
{"fsubr", 0, 0xdee9, X, FP|Ugh, { 0, 0, 0} }, /* alias for fsubrp */
#endif
{"fsubr", 1, 0xd8, 5, sld_FP|FloatMF|Modrm, { LongMem|LLongMem, 0, 0} },
{"fisubr", 1, 0xde, 5, sl_FP|FloatMF|Modrm, { ShortMem|LongMem, 0, 0} },
-#if SYSV386_COMPAT
+#if UNIXWARE_COMPAT
{"fsubrp", 2, 0xdee8, X, FP|ShortForm, { FloatAcc, FloatReg, 0} },
{"fsubrp", 1, 0xdee8, X, FP|ShortForm, { FloatReg, 0, 0} },
{"fsubrp", 0, 0xdee9, X, FP, { 0, 0, 0} },
-#if OLDGCC_COMPAT
{"fsubrp", 2, 0xdee8, X, FP|ShortForm|Ugh, { FloatReg, FloatAcc, 0} },
-#endif
#else
{"fsubrp", 2, 0xdee0, X, FP|ShortForm, { FloatAcc, FloatReg, 0} },
{"fsubrp", 1, 0xdee0, X, FP|ShortForm, { FloatReg, 0, 0} },
@@ -643,7 +631,7 @@ static const template i386_optab[] = {
/* multiply */
{"fmul", 2, 0xd8c8, X, FP|ShortForm|FloatD, { FloatReg, FloatAcc, 0} },
{"fmul", 1, 0xd8c8, X, FP|ShortForm, { FloatReg, 0, 0} },
-#if SYSV386_COMPAT
+#if UNIXWARE_COMPAT
{"fmul", 0, 0xdec9, X, FP|Ugh, { 0, 0, 0} }, /* alias for fmulp */
#endif
{"fmul", 1, 0xd8, 1, sld_FP|FloatMF|Modrm, { LongMem|LLongMem, 0, 0} },
@@ -657,19 +645,17 @@ static const template i386_optab[] = {
/* divide */
{"fdiv", 2, 0xd8f0, X, FP|ShortForm|FloatDR, { FloatReg, FloatAcc, 0} },
{"fdiv", 1, 0xd8f0, X, FP|ShortForm, { FloatReg, 0, 0} },
-#if SYSV386_COMPAT
+#if UNIXWARE_COMPAT
{"fdiv", 0, 0xdef1, X, FP|Ugh, { 0, 0, 0} }, /* alias for fdivp */
#endif
{"fdiv", 1, 0xd8, 6, sld_FP|FloatMF|Modrm, { LongMem|LLongMem, 0, 0} },
{"fidiv", 1, 0xde, 6, sld_FP|FloatMF|Modrm, { ShortMem|LongMem, 0, 0} },
-#if SYSV386_COMPAT
+#if UNIXWARE_COMPAT
{"fdivp", 2, 0xdef0, X, FP|ShortForm, { FloatAcc, FloatReg, 0} },
{"fdivp", 1, 0xdef0, X, FP|ShortForm, { FloatReg, 0, 0} },
{"fdivp", 0, 0xdef1, X, FP, { 0, 0, 0} },
-#if OLDGCC_COMPAT
{"fdivp", 2, 0xdef0, X, FP|ShortForm|Ugh, { FloatReg, FloatAcc, 0} },
-#endif
#else
{"fdivp", 2, 0xdef8, X, FP|ShortForm, { FloatAcc, FloatReg, 0} },
{"fdivp", 1, 0xdef8, X, FP|ShortForm, { FloatReg, 0, 0} },
@@ -679,19 +665,17 @@ static const template i386_optab[] = {
/* divide reverse */
{"fdivr", 2, 0xd8f8, X, FP|ShortForm|FloatDR, { FloatReg, FloatAcc, 0} },
{"fdivr", 1, 0xd8f8, X, FP|ShortForm, { FloatReg, 0, 0} },
-#if SYSV386_COMPAT
+#if UNIXWARE_COMPAT
{"fdivr", 0, 0xdef9, X, FP|Ugh, { 0, 0, 0} }, /* alias for fdivrp */
#endif
{"fdivr", 1, 0xd8, 7, sld_FP|FloatMF|Modrm, { LongMem|LLongMem, 0, 0} },
{"fidivr", 1, 0xde, 7, sl_FP|FloatMF|Modrm, { ShortMem|LongMem, 0, 0} },
-#if SYSV386_COMPAT
+#if UNIXWARE_COMPAT
{"fdivrp", 2, 0xdef8, X, FP|ShortForm, { FloatAcc, FloatReg, 0} },
{"fdivrp", 1, 0xdef8, X, FP|ShortForm, { FloatReg, 0, 0} },
{"fdivrp", 0, 0xdef9, X, FP, { 0, 0, 0} },
-#if OLDGCC_COMPAT
{"fdivrp", 2, 0xdef8, X, FP|ShortForm|Ugh, { FloatReg, FloatAcc, 0} },
-#endif
#else
{"fdivrp", 2, 0xdef0, X, FP|ShortForm, { FloatAcc, FloatReg, 0} },
{"fdivrp", 1, 0xdef0, X, FP|ShortForm, { FloatReg, 0, 0} },
@@ -731,7 +715,8 @@ static const template i386_optab[] = {
{"fstsw", 0, 0xdfe0, X, FP|FWait, { 0, 0, 0} },
{"fnclex", 0, 0xdbe2, X, FP, { 0, 0, 0} },
{"fclex", 0, 0xdbe2, X, FP|FWait, { 0, 0, 0} },
-/* Short forms of fldenv, fstenv use data size prefix. */
+/* Short forms of fldenv, fstenv use data size prefix.
+ FIXME: Are these the right suffixes? */
{"fnstenv",1, 0xd9, 6, sl_Suf|Modrm, { LLongMem, 0, 0} },
{"fstenv", 1, 0xd9, 6, sl_Suf|FWait|Modrm, { LLongMem, 0, 0} },
{"fldenv", 1, 0xd9, 4, sl_Suf|Modrm, { LLongMem, 0, 0} },
@@ -746,8 +731,9 @@ static const template i386_optab[] = {
#define FWAIT_OPCODE 0x9b
{"fwait", 0, 0x9b, X, FP, { 0, 0, 0} },
-/* Opcode prefixes; we allow them as separate insns too. */
-
+/*
+ opcode prefixes; we allow them as seperate insns too
+*/
#define ADDR_PREFIX_OPCODE 0x67
{"addr16", 0, 0x67, X, NoSuf|IsPrefix|Size16|IgnoreSize, { 0, 0, 0} },
{"addr32", 0, 0x67, X, NoSuf|IsPrefix|Size32|IgnoreSize, { 0, 0, 0} },
@@ -781,7 +767,7 @@ static const template i386_optab[] = {
{"repne", 0, 0xf2, X, NoSuf|IsPrefix, { 0, 0, 0} },
{"repnz", 0, 0xf2, X, NoSuf|IsPrefix, { 0, 0, 0} },
-/* 486 extensions. */
+/* 486 extensions */
{"bswap", 1, 0x0fc8, X, l_Suf|ShortForm, { Reg32, 0, 0 } },
{"xadd", 2, 0x0fc0, X, bwl_Suf|W|Modrm, { Reg, Reg|AnyMem, 0 } },
@@ -790,10 +776,10 @@ static const template i386_optab[] = {
{"wbinvd", 0, 0x0f09, X, NoSuf, { 0, 0, 0} },
{"invlpg", 1, 0x0f01, 7, NoSuf|Modrm, { AnyMem, 0, 0} },
-/* 586 and late 486 extensions. */
+/* 586 and late 486 extensions */
{"cpuid", 0, 0x0fa2, X, NoSuf, { 0, 0, 0} },
-/* Pentium extensions. */
+/* Pentium extensions */
{"wrmsr", 0, 0x0f30, X, NoSuf, { 0, 0, 0} },
{"rdtsc", 0, 0x0f31, X, NoSuf, { 0, 0, 0} },
{"rdmsr", 0, 0x0f32, X, NoSuf, { 0, 0, 0} },
@@ -803,7 +789,7 @@ static const template i386_optab[] = {
{"fxsave", 1, 0x0fae, 0, FP|Modrm, { LLongMem, 0, 0} },
{"fxrstor", 1, 0x0fae, 1, FP|Modrm, { LLongMem, 0, 0} },
-/* Pentium Pro extensions. */
+/* Pentium Pro extensions */
{"rdpmc", 0, 0x0f33, X, NoSuf, { 0, 0, 0} },
{"ud2", 0, 0x0f0b, X, NoSuf, { 0, 0, 0} }, /* official undefined instr. */
@@ -928,7 +914,7 @@ static const template i386_optab[] = {
{"pxor", 2, 0x0fef, X, FP|Modrm, { RegMMX|LongMem, RegMMX, 0 } },
-/* PIII Katmai New Instructions / SIMD instructions. */
+/* PIII Katmai New Instructions / SIMD instructions */
{"addps", 2, 0x0f58, X, FP|Modrm, { RegXMM|LLongMem, RegXMM, 0 } },
{"addss", 2, 0xf30f58, X, FP|Modrm, { RegXMM|WordMem, RegXMM, 0 } },
@@ -1017,7 +1003,7 @@ static const template i386_optab[] = {
{"unpcklps", 2, 0x0f14, X, FP|Modrm, { RegXMM|LLongMem, RegXMM, 0 } },
{"xorps", 2, 0x0f57, X, FP|Modrm, { RegXMM|LLongMem, RegXMM, 0 } },
-/* AMD 3DNow! instructions. */
+/* AMD 3DNow! instructions */
{"prefetch", 1, 0x0f0d, 0, FP|Modrm, { ByteMem, 0, 0 } },
{"prefetchw",1, 0x0f0d, 1, FP|Modrm, { ByteMem, 0, 0 } },
@@ -1075,7 +1061,7 @@ static const template i386_optab[] = {
#define MAX_MNEM_SIZE 16 /* for parsing insn mnemonics from input */
-/* 386 register table. */
+/* 386 register table */
static const reg_entry i386_regtab[] = {
/* make %st first as we test for it */
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-05 07:12:05 +0000