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- #ifndef __ASM_ALTERNATIVE_ASM_H
- #define __ASM_ALTERNATIVE_ASM_H
- #ifdef __ASSEMBLY__
- .macro altinstruction_entry orig_offset alt_offset feature orig_len alt_len
- .word \orig_offset - .
- .word \alt_offset - .
- .hword \feature
- .byte \orig_len
- .byte \alt_len
- .endm
- .macro alternative_insn insn1 insn2 cap
- 661: \insn1
- 662: .pushsection .altinstructions, "a"
- altinstruction_entry 661b, 663f, \cap, 662b-661b, 664f-663f
- .popsection
- .pushsection .altinstr_replacement, "ax"
- 663: \insn2
- 664: .popsection
- .if ((664b-663b) != (662b-661b))
- .error "Alternatives instruction length mismatch"
- .endif
- .endm
- .macro user_alternative_insn l insn1 insn2 cap
- 661 : \insn1
- 662 : .pushsection .altinstructions, "a"
- altinstruction_entry 661b, 663f, \cap, 662b-661b, 664f-663f
- .popsection
- .pushsection .altinstr_replacement, "ax"
- 663 : \insn2
- 664 : .popsection
- .if ((664b-663b) != (662b-661b))
- .error "Alternatives instruction length mismatch"
- .endif
- .pushsection __ex_table, "a"
- .align 3
- .quad 661b, \l
- .popsection
- .endm
- #endif /* __ASSEMBLY__ */
- #endif /* __ASM_ALTERNATIVE_ASM_H */
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