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Commit af20aeb1 authored by Milton Miller's avatar Milton Miller Committed by Benjamin Herrenschmidt
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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: default avatarMilton Miller <miltonm@bga.com>
Signed-off-by: default avatarMichael Neuling <mikey@neuling.org>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent dfb432cb

arch/powerpc/include/asm/feature-fixups.h

+20 −5
Original line number Diff line number Diff line
@@ -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 */