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powerpc: Enable MMU feature sections for inline asm 

powerpc: Enable MMU feature sections for inline asm

This adds the ability to do MMU feature sections for inline asm.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Milton Miller 2009-04-29 20:58:01 +00:00 committed by Benjamin Herrenschmidt
parent dfb432cb96
commit af20aeb1a3
1 changed files with 20 additions and 5 deletions
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25
arch/powerpc/include/asm/feature-fixups.h
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@ -8,8 +8,6 @@
* 2 of the License, or (at your option) any later version.
*/
#ifdef __ASSEMBLY__
/*
* Feature section common macros
*
@ -23,10 +21,12 @@
/* 64 bits kernel, 32 bits code (ie. vdso32) */
#define FTR_ENTRY_LONG .llong
#define FTR_ENTRY_OFFSET .long 0xffffffff; .long
#elif defined(CONFIG_PPC64)
#define FTR_ENTRY_LONG .llong
#define FTR_ENTRY_OFFSET .llong
#else
/* 64 bit kernel 64 bit code, or 32 bit kernel 32 bit code */
#define FTR_ENTRY_LONG PPC_LONG
#define FTR_ENTRY_OFFSET PPC_LONG
#define FTR_ENTRY_LONG .long
#define FTR_ENTRY_OFFSET .long
#endif
#define START_FTR_SECTION(label) label##1:
@ -141,6 +141,21 @@ label##5: \
#define ALT_FW_FTR_SECTION_END_IFCLR(msk) \
ALT_FW_FTR_SECTION_END_NESTED_IFCLR(msk, 97)
#ifndef __ASSEMBLY__
#define ASM_MMU_FTR_IF(section_if, section_else, msk, val) \
stringify_in_c(BEGIN_MMU_FTR_SECTION) \
section_if "; " \
stringify_in_c(MMU_FTR_SECTION_ELSE) \
section_else "; " \
stringify_in_c(ALT_MMU_FTR_SECTION_END((msk), (val)))
#define ASM_MMU_FTR_IFSET(section_if, section_else, msk) \
ASM_MMU_FTR_IF(section_if, section_else, (msk), (msk))
#define ASM_MMU_FTR_IFCLR(section_if, section_else, msk) \
ASM_MMU_FTR_IF(section_if, section_else, (msk), 0)
#endif /* __ASSEMBLY__ */
/* LWSYNC feature sections */