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| author | H.J. Lu <hjl.tools@gmail.com> | 2010-08-06 18:22:49 +0000 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2010-08-06 18:22:49 +0000 |
| commit | 6eee9f41a7a082b8ac53c0f85167e3a67d5c1556 (patch) | |
| tree | 5a4f7fb668ee508ebe7e3813eede991086b5d934 /opcodes/i386-opc.h | |
| parent | 5990e07eee5e396c9d1a6821c0fe9aaefdfbe2f0 (diff) | |
| download | gdb-6eee9f41a7a082b8ac53c0f85167e3a67d5c1556.tar.gz | |
Don't generate multi-byte NOPs for i686.
gas/
2010-08-06 Quentin Neill <quentin.neill@amd.com>
* config/tc-i386.c (arch_entry): Add negated bit to
disambiguate flag names starting with "no".
(cpu_arch): Add negated bit definitions. Add
".nop" CPU extension.
(i386_align_code): Use new .cpunop bit to decide
when to generate alignment using nops.
(set_cpu_arch): Use negated bit instead to decide
when to use cpu_flags or vs. cpu_flags_and_not.
(md_parse_option): Likewise.
gas/testsuite/
2010-08-06 Quentin Neill <quentin.neill@amd.com>
* gas/i386/arch-10-1.l: Add nopl instruction.
* gas/i386/arch-10-2.l: Likewise.
* gas/i386/arch-10-3.l: Likewise.
* gas/i386/arch-10-4.l: Likewise.
* gas/i386/arch-10.s: Likewise.
* gas/i386/arch-10.d: Add nopl instruction, and +nopl extension
flag to as flags.
* gas/i386/nops-5-i686.d: Change alignment code generated for
-mtune=i686.
* gas/i386/nops-5.d: Change alignment code generated for
.arch i686.
* gas/i386/x86-64-nops-5-k8.d: Likewise.
* gas/i386/x86-64-nops-5.d: Likewise.
opcodes/
2010-08-06 Quentin Neill <quentin.neill@amd.com>
* i386-gen.c (cpu_flag_init): Define CpuNop extension flag, add
to processor flags for PENTIUMPRO processors and later.
* i386-opc.h (enum): Add CpuNop.
(i386_cpu_flags): Add cpunop bit.
* i386-opc.tbl: Change nop cpu_flags.
* i386-init.h: Regenerated.
* i386-tbl.h: Likewise.
Diffstat (limited to 'opcodes/i386-opc.h')
| -rw-r--r-- | opcodes/i386-opc.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/opcodes/i386-opc.h b/opcodes/i386-opc.h index 5477c3856ef..239f9de54d0 100644 --- a/opcodes/i386-opc.h +++ b/opcodes/i386-opc.h @@ -46,6 +46,8 @@ enum Cpu686, /* CLFLUSH Instruction support required */ CpuClflush, + /* NOP Instruction support required */ + CpuNop, /* SYSCALL Instructions support required */ CpuSYSCALL, /* Floating point support required */ @@ -152,6 +154,7 @@ typedef union i386_cpu_flags unsigned int cpui586:1; unsigned int cpui686:1; unsigned int cpuclflush:1; + unsigned int cpunop:1; unsigned int cpusyscall:1; unsigned int cpu8087:1; unsigned int cpu287:1; |