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- #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 */
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