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

   1 #ifndef _ASM_X86_ALTERNATIVE_ASM_H
   2 #define _ASM_X86_ALTERNATIVE_ASM_H
   3
   4 #ifdef __ASSEMBLY__
   5
   6 #include <asm/asm.h>
   7
   8 #ifdef CONFIG_SMP
   9         .macro LOCK_PREFIX
  10 672:    lock
  11         .pushsection .smp_locks,"a"
  12         .balign 4
  13         .long 672b - .
  14         .popsection
  15         .endm
  16 #else
  17         .macro LOCK_PREFIX
  18         .endm
  19 #endif
  20
  21 .macro altinstruction_entry orig alt feature orig_len alt_len
  22         .long \orig - .
  23         .long \alt - .
  24         .word \feature
  25         .byte \orig_len
  26         .byte \alt_len
  27 .endm
  28
  29 #endif  /*  __ASSEMBLY__  */
  30
  31 #endif /* _ASM_X86_ALTERNATIVE_ASM_H */