diff options
| author | Michael Ellerman <michael@ellerman.id.au> | 2008-06-24 11:32:39 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-07-01 11:28:25 +1000 |
| commit | c5157e587b33b1185cf73207fc53760cf1351430 (patch) | |
| tree | 996a4e76bae11001a8e97141c617c159dde37ec8 /include/asm-powerpc/feature-fixups.h | |
| parent | 51c52e86694f19e84600a40f6156889feafd8ae9 (diff) | |
powerpc: Consolidate CPU and firmware feature fixup macros
The CPU and firmware feature fixup macros are currently spread across
three files, firmware.h, cputable.h and asm-compat.h. Consolidate them
into their own file, feature-fixups.h
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/feature-fixups.h')
| -rw-r--r-- | include/asm-powerpc/feature-fixups.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/include/asm-powerpc/feature-fixups.h b/include/asm-powerpc/feature-fixups.h new file mode 100644 index 00000000000..85972125bbb --- /dev/null +++ b/include/asm-powerpc/feature-fixups.h @@ -0,0 +1,102 @@ +#ifndef __ASM_POWERPC_FEATURE_FIXUPS_H +#define __ASM_POWERPC_FEATURE_FIXUPS_H + +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#ifdef __ASSEMBLY__ + +/* + * Feature section common macros + * + * Note that the entries now contain offsets between the table entry + * and the code rather than absolute code pointers in order to be + * useable with the vdso shared library. There is also an assumption + * that values will be negative, that is, the fixup table has to be + * located after the code it fixes up. + */ +#ifdef CONFIG_PPC64 + +#ifdef __powerpc64__ + +/* 64 bits kernel, 64 bits code */ +#define MAKE_FTR_SECTION_ENTRY(msk, val, label, sect) \ +99: \ + .section sect,"a"; \ + .align 3; \ +98: \ + .llong msk; \ + .llong val; \ + .llong label##b-98b; \ + .llong 99b-98b; \ + .previous + +#else /* __powerpc64__ */ + +/* 64 bits kernel, 32 bits code (ie. vdso32) */ +#define MAKE_FTR_SECTION_ENTRY(msk, val, label, sect) \ +99: \ + .section sect,"a"; \ + .align 3; \ +98: \ + .llong msk; \ + .llong val; \ + .long 0xffffffff; \ + .long label##b-98b; \ + .long 0xffffffff; \ + .long 99b-98b; \ + .previous + +#endif /* !__powerpc64__ */ + +#else /* CONFIG_PPC64 */ + +/* 32 bits kernel, 32 bits code */ +#define MAKE_FTR_SECTION_ENTRY(msk, val, label, sect) \ +99: \ + .section sect,"a"; \ + .align 2; \ +98: \ + .long msk; \ + .long val; \ + .long label##b-98b; \ + .long 99b-98b; \ + .previous + +#endif /* !CONFIG_PPC64 */ + + +/* CPU feature dependent sections */ +#define BEGIN_FTR_SECTION_NESTED(label) label: +#define BEGIN_FTR_SECTION BEGIN_FTR_SECTION_NESTED(97) + +#define END_FTR_SECTION_NESTED(msk, val, label) \ + MAKE_FTR_SECTION_ENTRY(msk, val, label, __ftr_fixup) + +#define END_FTR_SECTION(msk, val) \ + END_FTR_SECTION_NESTED(msk, val, 97) + +#define END_FTR_SECTION_IFSET(msk) END_FTR_SECTION((msk), (msk)) +#define END_FTR_SECTION_IFCLR(msk) END_FTR_SECTION((msk), 0) + + +/* Firmware feature dependent sections */ +#define BEGIN_FW_FTR_SECTION_NESTED(label) label: +#define BEGIN_FW_FTR_SECTION BEGIN_FW_FTR_SECTION_NESTED(97) + +#define END_FW_FTR_SECTION_NESTED(msk, val, label) \ + MAKE_FTR_SECTION_ENTRY(msk, val, label, __fw_ftr_fixup) + +#define END_FW_FTR_SECTION(msk, val) \ + END_FW_FTR_SECTION_NESTED(msk, val, 97) + +#define END_FW_FTR_SECTION_IFSET(msk) END_FW_FTR_SECTION((msk), (msk)) +#define END_FW_FTR_SECTION_IFCLR(msk) END_FW_FTR_SECTION((msk), 0) + +#endif /* __ASSEMBLY__ */ + +#endif /* __ASM_POWERPC_FEATURE_FIXUPS_H */ |