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gas/

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2006-06-12  H.J. Lu  <hongjiu.lu@intel.com>

	* config/tc-i386.c (process_suffix): Don't add rex64 for
	"xchg %rax,%rax".

gas/testsuite/

2006-06-12  H.J. Lu  <hongjiu.lu@intel.com>

	* gas/i386/opcode.s: Add "xchg %ax,%ax".
	* gas/i386/opcode.d: Updated.

	* gas/i386/x86-64-opcode.s: Add xchg %ax,%ax, xchg %eax,%eax,
	xchg %rax,%rax, rex64 xchg %rax,%rax and xchg %rax,%r8.
	* gas/i386/x86-64-opcode.d: Updated.

include/opcode/

2006-06-12  H.J. Lu  <hongjiu.lu@intel.com>

	* i386.h (i386_optab): Update comment for 64bit NOP.

opcodes/

2006-06-12  H.J. Lu  <hongjiu.lu@intel.com>

	* i386-dis.c (NOP_Fixup): Removed.
	(NOP_Fixup1): New.
	(NOP_Fixup2): Likewise.
	(dis386): Use NOP_Fixup1 and NOP_Fixup2 on 0x90.
This commit is contained in:
H.J. Lu
2006-06-12 18:55:44 +00:00
parent 4e9d3b813b
commit 46e883c5a9
11 changed files with 74 additions and 17 deletions
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26
opcodes/i386-dis.c
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@@ -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);
@@ -679,7 +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 },
@@ -4360,12 +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[] = {