arch/x86/include/asm/frame.h

   1 #ifdef __ASSEMBLY__
   2
   3 #include <asm/asm.h>
   4 #include <asm/dwarf2.h>
   5
   6 /* The annotation hides the frame from the unwinder and makes it look
   7    like a ordinary ebp save/restore. This avoids some special cases for
   8    frame pointer later */
   9 #ifdef CONFIG_FRAME_POINTER
  10         .macro FRAME
  11         __ASM_SIZE(push,_cfi)   %__ASM_REG(bp)
  12         CFI_REL_OFFSET          __ASM_REG(bp), 0
  13         __ASM_SIZE(mov)         %__ASM_REG(sp), %__ASM_REG(bp)
  14         .endm
  15         .macro ENDFRAME
  16         __ASM_SIZE(pop,_cfi)    %__ASM_REG(bp)
  17         CFI_RESTORE             __ASM_REG(bp)
  18         .endm
  19 #else
  20         .macro FRAME
  21         .endm
  22         .macro ENDFRAME
  23         .endm
  24 #endif
  25
  26 #endif  /*  __ASSEMBLY__  */