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authorJan Beulich <jbeulich@novell.com>2004-11-25 08:42:54 +0000
committerJan Beulich <jbeulich@novell.com>2004-11-25 08:42:54 +0000
commit37edbb65ad7d81f172315eadf4f66783d78c36a5 (patch)
tree9113686b18a9275f5a46f1c0ecd9d38d2b7dcb64 /include/opcode/i386.h
parentebd98106b23a4d1d64a492cf26977e66c32393ac (diff)
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2004-11-25 Jan Beulich <jbeulich@novell.com> * config/tc-i386.c (optimize_imm): Adjust immediates to only those permissible for the selected instruction suffix. (process_suffix): For DefaultSize instructions, suppressing the guessing of a 'q' suffix if the instruction doesn't support it is pointless, because only an 'l' suffix can be guessed in this place. gas/testsuite/ 2004-11-25 Jan Beulich <jbeulich@novell.com> * gas/i386/x86-64-inval.[sl]: Remove sahf/lahf. include/opcode/ 2004-11-25 Jan Beulich <jbeulich@novell.com> * i386.h: CpuNo64 mov can't reasonably have a 'q' suffix. Moves to/from test registers are illegal in 64-bit mode. Add missing NoRex64 to sidt. fxsave/fxrstor now allow for a 'q' suffix (previously one had to explicitly encode a rex64 prefix). Re-enable lahf/sahf in 64-bit mode as at least some Athlon64/Opteron steppings support it there. Add cmpxchg16b as per Intel's 64-bit documentation.
Diffstat (limited to 'include/opcode/i386.h')
-rw-r--r--include/opcode/i386.h15
1 files changed, 8 insertions, 7 deletions
diff --git a/include/opcode/i386.h b/include/opcode/i386.h
index 1a88da4..bceedfc 100644
--- a/include/opcode/i386.h
+++ b/include/opcode/i386.h
@@ -85,7 +85,7 @@ static const template i386_optab[] =
#define MOV_AX_DISP32 0xa0
/* In the 64bit mode the short form mov immediate is redefined to have
64bit displacement value. */
-{ "mov", 2, 0xa0, X, CpuNo64,bwlq_Suf|D|W, { Disp16|Disp32, Acc, 0 } },
+{ "mov", 2, 0xa0, X, CpuNo64,bwl_Suf|D|W, { Disp16|Disp32, Acc, 0 } },
{ "mov", 2, 0x88, X, 0, bwlq_Suf|D|W|Modrm, { Reg, Reg|AnyMem, 0} },
/* In the 64bit mode the short form mov immediate is redefined to have
64bit displacement value. */
@@ -109,7 +109,7 @@ static const template i386_optab[] =
{ "mov", 2, 0x0f20, X, Cpu64, q_Suf|D|Modrm|IgnoreSize|NoRex64,{ Control, Reg64|InvMem, 0} },
{ "mov", 2, 0x0f21, X, Cpu386|CpuNo64, l_Suf|D|Modrm|IgnoreSize,{ Debug, Reg32|InvMem, 0} },
{ "mov", 2, 0x0f21, X, Cpu64, q_Suf|D|Modrm|IgnoreSize|NoRex64,{ Debug, Reg64|InvMem, 0} },
-{ "mov", 2, 0x0f24, X, Cpu386, l_Suf|D|Modrm|IgnoreSize, { Test, Reg32|InvMem, 0} },
+{ "mov", 2, 0x0f24, X, Cpu386|CpuNo64, l_Suf|D|Modrm|IgnoreSize, { Test, Reg32|InvMem, 0} },
{ "movabs",2, 0xa0, X, Cpu64, bwlq_Suf|D|W, { Disp64, Acc, 0 } },
{ "movabs",2, 0xb0, X, Cpu64, q_Suf|W|ShortForm, { Imm64, Reg64, 0 } },
@@ -219,8 +219,8 @@ static const template i386_optab[] =
{"cli", 0, 0xfa, X, 0, NoSuf, { 0, 0, 0} },
{"clts", 0, 0x0f06, X, Cpu286, NoSuf, { 0, 0, 0} },
{"cmc", 0, 0xf5, X, 0, NoSuf, { 0, 0, 0} },
-{"lahf", 0, 0x9f, X, CpuNo64,NoSuf, { 0, 0, 0} },
-{"sahf", 0, 0x9e, X, CpuNo64,NoSuf, { 0, 0, 0} },
+{"lahf", 0, 0x9f, X, 0, NoSuf, { 0, 0, 0} },
+{"sahf", 0, 0x9e, X, 0, NoSuf, { 0, 0, 0} },
{"pushf", 0, 0x9c, X, CpuNo64,wl_Suf|DefaultSize, { 0, 0, 0} },
{"pushf", 0, 0x9c, X, Cpu64, wq_Suf|DefaultSize|NoRex64,{ 0, 0, 0} },
{"popf", 0, 0x9d, X, CpuNo64,wl_Suf|DefaultSize, { 0, 0, 0} },
@@ -578,7 +578,7 @@ static const template i386_optab[] =
{"sgdt", 1, 0x0f01, 0, Cpu286|CpuNo64, wl_Suf|Modrm, { WordMem, 0, 0} },
{"sgdt", 1, 0x0f01, 0, Cpu64, q_Suf|Modrm|NoRex64, { LLongMem, 0, 0} },
{"sidt", 1, 0x0f01, 1, Cpu286|CpuNo64, wl_Suf|Modrm, { WordMem, 0, 0} },
-{"sidt", 1, 0x0f01, 1, Cpu64, q_Suf|Modrm, { LLongMem, 0, 0} },
+{"sidt", 1, 0x0f01, 1, Cpu64, q_Suf|Modrm|NoRex64, { LLongMem, 0, 0} },
{"sldt", 1, 0x0f00, 0, Cpu286, wlq_Suf|Modrm, { WordReg|InvMem, 0, 0} },
{"sldt", 1, 0x0f00, 0, Cpu286, w_Suf|Modrm|IgnoreSize,{ ShortMem, 0, 0} },
{"smsw", 1, 0x0f01, 4, Cpu286, wlq_Suf|Modrm, { WordReg|InvMem, 0, 0} },
@@ -912,8 +912,8 @@ static const template i386_optab[] =
/* Pentium II/Pentium Pro extensions. */
{"sysenter",0, 0x0f34, X, Cpu686, NoSuf, { 0, 0, 0} },
{"sysexit", 0, 0x0f35, X, Cpu686, NoSuf, { 0, 0, 0} },
-{"fxsave", 1, 0x0fae, 0, Cpu686, FP|Modrm, { LLongMem, 0, 0} },
-{"fxrstor", 1, 0x0fae, 1, Cpu686, FP|Modrm, { LLongMem, 0, 0} },
+{"fxsave", 1, 0x0fae, 0, Cpu686, q_Suf|Modrm, { LLongMem, 0, 0} },
+{"fxrstor", 1, 0x0fae, 1, Cpu686, q_Suf|Modrm, { LLongMem, 0, 0} },
{"rdpmc", 0, 0x0f33, X, Cpu686, NoSuf, { 0, 0, 0} },
/* official undefined instr. */
{"ud2", 0, 0x0f0b, X, Cpu686, NoSuf, { 0, 0, 0} },
@@ -1316,6 +1316,7 @@ static const template i386_optab[] =
{"addsubpd", 2, 0x660fd0, X, CpuPNI, NoSuf|IgnoreSize|Modrm, { RegXMM|LLongMem, RegXMM, 0 } },
{"addsubps", 2, 0xf20fd0, X, CpuPNI, NoSuf|IgnoreSize|Modrm, { RegXMM|LLongMem, RegXMM, 0 } },
+{"cmpxchg16b",1, 0x0fc7, 1, CpuPNI|Cpu64, NoSuf|Modrm|Rex64, { LLongMem, 0, 0} },
{"fisttp", 1, 0xdf, 1, CpuPNI, sl_FP|Modrm, { ShortMem|LongMem, 0, 0} },
{"fisttp", 1, 0xdd, 1, CpuPNI, q_FP|Modrm, { LLongMem, 0, 0} },
{"fisttpll", 1, 0xdd, 1, CpuPNI, FP|Modrm, { LLongMem, 0, 0} },