xref: /linux/arch/x86/include/asm/frame.h (revision f7018c21350204c4cf628462f229d44d03545254)
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__  */
27