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| author | H.J. Lu <hjl.tools@gmail.com> | 2018-09-14 12:19:58 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2018-09-14 12:20:10 -0700 |
| commit | 6865c0435a54e6d5f1fcc5cdcd56895e9a3c5484 (patch) | |
| tree | c27434e6a5abb3f09b2ee53ea2f34cc6d062f684 /opcodes/i386-opc.h | |
| parent | 70df6fc9bc9e114f46532dbe58caa98e495b119c (diff) | |
| download | gdb-6865c0435a54e6d5f1fcc5cdcd56895e9a3c5484.zip gdb-6865c0435a54e6d5f1fcc5cdcd56895e9a3c5484.tar.gz gdb-6865c0435a54e6d5f1fcc5cdcd56895e9a3c5484.tar.bz2 | |
x86: Support VEX/EVEX WIG encoding
Add VEXWIG, defined as 3, to indicate that the VEX.W/EVEX.W bit is
ignored by such VEX/EVEX instructions, aka WIG instructions. Set
VexW=3 on VEX/EVEX WIG instructions. Update assembler to check
VEXWIG when setting the VEX.W bit.
gas/
PR gas/23642
* config/tc-i386.c (build_vex_prefix): Check VEXWIG when setting
the VEX.W bit.
(build_evex_prefix): Check VEXWIG when setting the EVEX.W bit.
opcodes/
PR gas/23642
* i386-opc.h (VEXWIG): New.
* i386-opc.tbl: Set VexW=3 on VEX/EVEX WIG instructions.
* i386-tbl.h: Regenerated.
Diffstat (limited to 'opcodes/i386-opc.h')
| -rw-r--r-- | opcodes/i386-opc.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/opcodes/i386-opc.h b/opcodes/i386-opc.h index a7f0ba2..0a0ff97 100644 --- a/opcodes/i386-opc.h +++ b/opcodes/i386-opc.h @@ -499,9 +499,11 @@ enum 0: Set by the REX.W bit. 1: VEX.W0. Should always be 0. 2: VEX.W1. Should always be 1. + 3: VEX.WIG. The VEX.W bit is ignored. */ #define VEXW0 1 #define VEXW1 2 +#define VEXWIG 3 VexW, /* VEX opcode prefix: 0: VEX 0x0F opcode prefix. |