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| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2015-12-18 06:39:19 -0600 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-01-19 12:59:07 +0100 |
| commit | ec5186557abbe711dfd34e1863735dfecb0602cc (patch) | |
| tree | 7a15ebeff0140c1e2f6a2e3b14cd2486bf3720cd /arch/x86/include/asm/frame.h | |
| parent | 997963edd912a6d77d68b2bbc19f40ce8facabd7 (diff) | |
| download | linux-0-day-ec5186557abbe711dfd34e1863735dfecb0602cc.tar.gz linux-0-day-ec5186557abbe711dfd34e1863735dfecb0602cc.tar.xz | |
x86/asm: Add C versions of frame pointer macros
Add C versions of the frame pointer macros which can be used to
create a stack frame in inline assembly.
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Bernd Petrovitsch <bernd@petrovitsch.priv.at>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Chris J Arges <chris.j.arges@canonical.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Pedro Alves <palves@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/f6786a282bf232ede3e2866414eae3cf02c7d662.1450442274.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/frame.h')
| -rw-r--r-- | arch/x86/include/asm/frame.h | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/arch/x86/include/asm/frame.h b/arch/x86/include/asm/frame.h index cec213bd6eba0..6e4d170726b75 100644 --- a/arch/x86/include/asm/frame.h +++ b/arch/x86/include/asm/frame.h @@ -1,16 +1,17 @@ #ifndef _ASM_X86_FRAME_H #define _ASM_X86_FRAME_H -#ifdef __ASSEMBLY__ - #include <asm/asm.h> /* * These are stack frame creation macros. They should be used by every * callable non-leaf asm function to make kernel stack traces more reliable. */ + #ifdef CONFIG_FRAME_POINTER +#ifdef __ASSEMBLY__ + .macro FRAME_BEGIN push %_ASM_BP _ASM_MOV %_ASM_SP, %_ASM_BP @@ -20,6 +21,16 @@ pop %_ASM_BP .endm +#else /* !__ASSEMBLY__ */ + +#define FRAME_BEGIN \ + "push %" _ASM_BP "\n" \ + _ASM_MOV "%" _ASM_SP ", %" _ASM_BP "\n" + +#define FRAME_END "pop %" _ASM_BP "\n" + +#endif /* __ASSEMBLY__ */ + #define FRAME_OFFSET __ASM_SEL(4, 8) #else /* !CONFIG_FRAME_POINTER */ @@ -30,5 +41,4 @@ #endif /* CONFIG_FRAME_POINTER */ -#endif /* __ASSEMBLY__ */ #endif /* _ASM_X86_FRAME_H */ |