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| author | H.J. Lu <hjl.tools@gmail.com> | 2020-10-14 04:17:54 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2020-10-14 04:20:55 -0700 |
| commit | 8b65b8953af2d49ae1d2d7fcc5b49c5308febbc1 (patch) | |
| tree | 6787d9d057850f28f7fd940774843b80871ab90b /gas/ChangeLog | |
| parent | 8c8bd0babc6039a4cef7d60d57b1b68e7a7f2e70 (diff) | |
| download | gdb-8b65b8953af2d49ae1d2d7fcc5b49c5308febbc1.zip gdb-8b65b8953af2d49ae1d2d7fcc5b49c5308febbc1.tar.gz gdb-8b65b8953af2d49ae1d2d7fcc5b49c5308febbc1.tar.bz2 | |
x86: Remove the prefix byte from non-VEX/EVEX base_opcode
Replace the prefix byte in non-VEX/EVEX base_opcode with PREFIX_0X66,
PREFIX_0XF2 or PREFIX_0XF3.
gas/
* config/tc-i386.c (load_insn_p): Check opcodeprefix == 0 for
base_opcode == 0xfc7.
(match_template): Likewise.
(process_suffix): Check opcodeprefix == PREFIX_0XF2 for CRC32.
(check_byte_reg): Likewise.
(output_insn): Don't add the 0xf3 prefix twice for PadLock
instructions. Don't add prefix from non-VEX/EVEX base_opcode.
opcodes/
* i386-gen.c (process_i386_opcode_modifier): Return 1 for
non-VEX/EVEX/prefix encoding.
(output_i386_opcode): Fail if non-VEX/EVEX/prefix base_opcode
has a prefix byte.
* i386-opc.tbl: Replace the prefix byte in non-VEX/EVEX
base_opcode with PREFIX_0X66, PREFIX_0XF2 or PREFIX_0XF3.
* i386-tbl.h: Regenerated.
Diffstat (limited to 'gas/ChangeLog')
| -rw-r--r-- | gas/ChangeLog | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index 76b65df..ae54f17 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,13 @@ +2020-10-14 H.J. Lu <hongjiu.lu@intel.com> + + * config/tc-i386.c (load_insn_p): Check opcodeprefix == 0 for + base_opcode == 0xfc7. + (match_template): Likewise. + (process_suffix): Check opcodeprefix == PREFIX_0XF2 for CRC32. + (check_byte_reg): Likewise. + (output_insn): Don't add the 0xf3 prefix twice for PadLock + instructions. Don't add prefix from non-VEX/EVEX base_opcode. + 2020-10-13 H.J. Lu <hongjiu.lu@intel.com> * config/tc-i386.c (build_vex_prefix): Replace vexopcode with |