OpenCloudOS-Kernel/arch/x86/include/asm/alternative-asm.h

27 lines
378 B
C

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