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https://github.com/torvalds/linux
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ecaf45ee5c
- Move them to a pure assembly file. Previously they were in a C file that only consisted of inline assembly. Doing it in pure assembler is much nicer. - Add a frame.i include with FRAME/ENDFRAME macros to easily add frame pointers to assembly functions - Add dwarf2 annotation to them so that the new dwarf2 unwinder doesn't get stuck on them - Random cleanups Includes feedback from Jan Beulich and a UML build fix from Andrew Morton. Cc: jbeulich@novell.com Cc: jdike@addtoit.com Signed-off-by: Andi Kleen <ak@suse.de>
25 lines
479 B
OpenEdge ABL
25 lines
479 B
OpenEdge ABL
#include <linux/config.h>
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#include <asm/dwarf2.h>
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/* The annotation hides the frame from the unwinder and makes it look
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like a ordinary ebp save/restore. This avoids some special cases for
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frame pointer later */
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#ifdef CONFIG_FRAME_POINTER
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.macro FRAME
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pushl %ebp
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CFI_ADJUST_CFA_OFFSET 4
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CFI_REL_OFFSET ebp,0
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movl %esp,%ebp
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.endm
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.macro ENDFRAME
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popl %ebp
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CFI_ADJUST_CFA_OFFSET -4
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CFI_RESTORE ebp
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.endm
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#else
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.macro FRAME
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.endm
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.macro ENDFRAME
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.endm
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#endif
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