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103 lines
2.7 KiB
C
103 lines
2.7 KiB
C
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#ifndef __ASM_POWERPC_FEATURE_FIXUPS_H
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#define __ASM_POWERPC_FEATURE_FIXUPS_H
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/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifdef __ASSEMBLY__
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/*
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* Feature section common macros
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*
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* Note that the entries now contain offsets between the table entry
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* and the code rather than absolute code pointers in order to be
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* useable with the vdso shared library. There is also an assumption
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* that values will be negative, that is, the fixup table has to be
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* located after the code it fixes up.
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*/
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#ifdef CONFIG_PPC64
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#ifdef __powerpc64__
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/* 64 bits kernel, 64 bits code */
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#define MAKE_FTR_SECTION_ENTRY(msk, val, label, sect) \
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99: \
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.section sect,"a"; \
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.align 3; \
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98: \
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.llong msk; \
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.llong val; \
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.llong label##b-98b; \
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.llong 99b-98b; \
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.previous
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#else /* __powerpc64__ */
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/* 64 bits kernel, 32 bits code (ie. vdso32) */
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#define MAKE_FTR_SECTION_ENTRY(msk, val, label, sect) \
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99: \
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.section sect,"a"; \
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.align 3; \
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98: \
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.llong msk; \
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.llong val; \
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.long 0xffffffff; \
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.long label##b-98b; \
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.long 0xffffffff; \
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.long 99b-98b; \
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.previous
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#endif /* !__powerpc64__ */
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#else /* CONFIG_PPC64 */
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/* 32 bits kernel, 32 bits code */
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#define MAKE_FTR_SECTION_ENTRY(msk, val, label, sect) \
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99: \
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.section sect,"a"; \
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.align 2; \
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98: \
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.long msk; \
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.long val; \
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.long label##b-98b; \
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.long 99b-98b; \
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.previous
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#endif /* !CONFIG_PPC64 */
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/* CPU feature dependent sections */
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#define BEGIN_FTR_SECTION_NESTED(label) label:
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#define BEGIN_FTR_SECTION BEGIN_FTR_SECTION_NESTED(97)
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#define END_FTR_SECTION_NESTED(msk, val, label) \
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MAKE_FTR_SECTION_ENTRY(msk, val, label, __ftr_fixup)
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#define END_FTR_SECTION(msk, val) \
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END_FTR_SECTION_NESTED(msk, val, 97)
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#define END_FTR_SECTION_IFSET(msk) END_FTR_SECTION((msk), (msk))
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#define END_FTR_SECTION_IFCLR(msk) END_FTR_SECTION((msk), 0)
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/* Firmware feature dependent sections */
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#define BEGIN_FW_FTR_SECTION_NESTED(label) label:
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#define BEGIN_FW_FTR_SECTION BEGIN_FW_FTR_SECTION_NESTED(97)
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#define END_FW_FTR_SECTION_NESTED(msk, val, label) \
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MAKE_FTR_SECTION_ENTRY(msk, val, label, __fw_ftr_fixup)
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#define END_FW_FTR_SECTION(msk, val) \
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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))
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#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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