9072d11da1
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>
27 lines
380 B
C
27 lines
380 B
C
#ifdef __ASSEMBLY__
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#include <asm/asm.h>
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#ifdef CONFIG_SMP
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.macro LOCK_PREFIX
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1: lock
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.section .smp_locks,"a"
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.balign 4
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.long 1b - .
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.previous
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.endm
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#else
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.macro LOCK_PREFIX
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.endm
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#endif
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.macro altinstruction_entry orig alt feature orig_len alt_len
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.align 8
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.quad \orig
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.quad \alt
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.word \feature
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.byte \orig_len
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.byte \alt_len
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.endm
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#endif /* __ASSEMBLY__ */
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