mirror/nasm
2
0
Fork 0
mirror of https://github.com/netwide-assembler/nasm.git synced 2025-03-19 18:00:23 +08:00
Code Issues Packages Projects Releases Wiki Activity

HLE: Move byte codes back to \271-\273

Browse Source 
Since we are back to three bytecodes, move them back to the \271-\273
slot to free up the \264 complete quad.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
H. Peter Anvin 2012-02-25 22:33:46 -08:00
parent e9d46c48e4
commit 574784d177
3 changed files with 15 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
assemble.c
View File

@ -80,10 +80,6 @@
* \254..\257 - a signed 32-bit operand to be extended to 64 bits.
* \260..\263 - this instruction uses VEX/XOP rather than REX, with the
* V field taken from operand 0..3.
* \264 - skip this instruction pattern if HLE prefixes present
* \265 - instruction takes XRELEASE (F3) with or without lock
* \266 - instruction takes XACQUIRE/XRELEASE with or without lock
* \267 - instruction takes XACQUIRE/XRELEASE with lock only
* \270 - this instruction uses VEX/XOP rather than REX, with the
* V field set to 1111b.
*
@ -101,6 +97,9 @@
*
* t = 0 for VEX (C4/C5), t = 1 for XOP (8F).
*
* \271 - instruction takes XRELEASE (F3) with or without lock
* \272 - instruction takes XACQUIRE/XRELEASE with or without lock
* \273 - instruction takes XACQUIRE/XRELEASE with lock only
* \274..\277 - a signed byte immediate operand, from operand 0..3,
* which is to be extended to the operand size.
* \310 - indicates fixed 16-bit address size, i.e. optional 0x67.
@ -981,12 +980,6 @@ static int64_t calcsize(int32_t segment, int64_t offset, int bits,
ins->vex_wlp = *codes++;
break;
case 0265:
case 0266:
case 0267:
hleok = c & 3;
break;
case 0270:
ins->rex |= REX_V;
ins->vexreg = 0;
@ -994,6 +987,12 @@ static int64_t calcsize(int32_t segment, int64_t offset, int bits,
ins->vex_wlp = *codes++;
break;
case 0271:
case 0272:
case 0273:
hleok = c & 3;
break;
case4(0274):
length++;
break;

6
disasm.c
View File

@ -703,19 +703,19 @@ static int matches(const struct itemplate *t, uint8_t *data,
break;
}
case 0265:
case 0271:
if (prefix->rep == 0xF3)
drep = P_XRELEASE;
break;
case 0266:
case 0272:
if (prefix->rep == 0xF2)
drep = P_XACQUIRE;
else if (prefix->rep == 0xF3)
drep = P_XRELEASE;
break;
case 0267:
case 0273:
if (prefix->lock == 0xF0) {
if (prefix->rep == 0xF2)
drep = P_XACQUIRE;

6
insns.pl
View File

@ -726,9 +726,9 @@ sub byte_code_compile($$) {
'jcc8' => 0370, # Match only if Jcc possible with single byte
'jmp8' => 0371, # Match only if JMP possible with single byte
'jlen' => 0373, # Length of jump
'hlexr' => 0265,
'hlenl' => 0266,
'hle' => 0267,
'hlexr' => 0271,
'hlenl' => 0272,
'hle' => 0273,
# This instruction takes XMM VSIB
'vsibx' => 0374,
'vm32x' => 0374,