From ecaf45ee5ce60afe7cc46e91d82c1b0cbda09387 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Tue, 26 Sep 2006 10:52:29 +0200 Subject: [PATCH] i386: Redo semaphore and rwlock assembly helpers - 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 --- include/asm-i386/frame.i | 24 ++++++++++++++++++++++++ include/asm-um/alternative-asm.i | 6 ++++++ include/asm-um/frame.i | 6 ++++++ 3 files changed, 36 insertions(+) create mode 100644 include/asm-i386/frame.i create mode 100644 include/asm-um/alternative-asm.i create mode 100644 include/asm-um/frame.i (limited to 'include') diff --git a/include/asm-i386/frame.i b/include/asm-i386/frame.i new file mode 100644 index 00000000000..4d68ddce18b --- /dev/null +++ b/include/asm-i386/frame.i @@ -0,0 +1,24 @@ +#include +#include + +/* The annotation hides the frame from the unwinder and makes it look + like a ordinary ebp save/restore. This avoids some special cases for + frame pointer later */ +#ifdef CONFIG_FRAME_POINTER + .macro FRAME + pushl %ebp + CFI_ADJUST_CFA_OFFSET 4 + CFI_REL_OFFSET ebp,0 + movl %esp,%ebp + .endm + .macro ENDFRAME + popl %ebp + CFI_ADJUST_CFA_OFFSET -4 + CFI_RESTORE ebp + .endm +#else + .macro FRAME + .endm + .macro ENDFRAME + .endm +#endif diff --git a/include/asm-um/alternative-asm.i b/include/asm-um/alternative-asm.i new file mode 100644 index 00000000000..cae9faca132 --- /dev/null +++ b/include/asm-um/alternative-asm.i @@ -0,0 +1,6 @@ +#ifndef __UM_ALTERNATIVE_ASM_I +#define __UM_ALTERNATIVE_ASM_I + +#include "asm/arch/alternative-asm.i" + +#endif diff --git a/include/asm-um/frame.i b/include/asm-um/frame.i new file mode 100644 index 00000000000..09d5dca5d92 --- /dev/null +++ b/include/asm-um/frame.i @@ -0,0 +1,6 @@ +#ifndef __UM_FRAME_I +#define __UM_FRAME_I + +#include "asm/arch/frame.i" + +#endif -- cgit v1.2.3