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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>
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Michael Ellerman
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Paul Mackerras
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Jul 1, 2008
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| #ifndef __ASM_POWERPC_FEATURE_FIXUPS_H | ||
| #define __ASM_POWERPC_FEATURE_FIXUPS_H | ||
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| /* | ||
| * 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. | ||
| */ | ||
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| #ifdef __ASSEMBLY__ | ||
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| /* | ||
| * 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 | ||
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| #ifdef __powerpc64__ | ||
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| /* 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 | ||
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| #else /* __powerpc64__ */ | ||
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| /* 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 | ||
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| #endif /* !__powerpc64__ */ | ||
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| #else /* CONFIG_PPC64 */ | ||
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| /* 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 | ||
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| #endif /* !CONFIG_PPC64 */ | ||
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| /* CPU feature dependent sections */ | ||
| #define BEGIN_FTR_SECTION_NESTED(label) label: | ||
| #define BEGIN_FTR_SECTION BEGIN_FTR_SECTION_NESTED(97) | ||
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| #define END_FTR_SECTION_NESTED(msk, val, label) \ | ||
| MAKE_FTR_SECTION_ENTRY(msk, val, label, __ftr_fixup) | ||
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| #define END_FTR_SECTION(msk, val) \ | ||
| END_FTR_SECTION_NESTED(msk, val, 97) | ||
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| #define END_FTR_SECTION_IFSET(msk) END_FTR_SECTION((msk), (msk)) | ||
| #define END_FTR_SECTION_IFCLR(msk) END_FTR_SECTION((msk), 0) | ||
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| /* Firmware feature dependent sections */ | ||
| #define BEGIN_FW_FTR_SECTION_NESTED(label) label: | ||
| #define BEGIN_FW_FTR_SECTION BEGIN_FW_FTR_SECTION_NESTED(97) | ||
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| #define END_FW_FTR_SECTION_NESTED(msk, val, label) \ | ||
| MAKE_FTR_SECTION_ENTRY(msk, val, label, __fw_ftr_fixup) | ||
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| #define END_FW_FTR_SECTION(msk, val) \ | ||
| END_FW_FTR_SECTION_NESTED(msk, val, 97) | ||
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| #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) | ||
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| #endif /* __ASSEMBLY__ */ | ||
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| #endif /* __ASM_POWERPC_FEATURE_FIXUPS_H */ |
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