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| author | Fenghua Yu <fenghua.yu@intel.com> | 2011-05-18 00:29:13 +0200 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2011-05-18 00:40:25 +0200 |
| commit | 9072d11da15a71e086eab3b5085184f2c1d06913 (patch) | |
| tree | 9ddd7e679443c855bb9823ef14c73e9746912c3c /arch/x86/include/asm/alternative-asm.h | |
| parent | x86, alternative, doc: Add comment for applying alternatives order (diff) | |
| download | linux-9072d11da15a71e086eab3b5085184f2c1d06913.tar.xz linux-9072d11da15a71e086eab3b5085184f2c1d06913.zip | |
x86, alternative: Add altinstruction_entry macro
Add altinstruction_entry macro to generate .altinstructions section
entries from assembly code. This should be less failure-prone than
open-coding.
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/1305671358-14478-5-git-send-email-fenghua.yu@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/include/asm/alternative-asm.h')
| -rw-r--r-- | arch/x86/include/asm/alternative-asm.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/include/asm/alternative-asm.h b/arch/x86/include/asm/alternative-asm.h index a63a68be1cce..94d420b360d1 100644 --- a/arch/x86/include/asm/alternative-asm.h +++ b/arch/x86/include/asm/alternative-asm.h @@ -15,4 +15,13 @@ .endm #endif +.macro altinstruction_entry orig alt feature orig_len alt_len + .align 8 + .quad \orig + .quad \alt + .word \feature + .byte \orig_len + .byte \alt_len +.endm + #endif /* __ASSEMBLY__ */ |