diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-01-12 23:07:46 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-01-12 23:07:46 +0100 |
| commit | 0a87a2db485a1456b7427914969c0e8195a1bbda (patch) | |
| tree | 8d0186672af22c6ee76118c471881cd66a36502d /arch/arm64/include/asm/alternative-asm.h | |
| parent | 7226572d8ed48f7e1aa9de5383d919490d6e9a0c (diff) | |
| parent | fcf3aac5fc307f0cae429f5844ddc25761662858 (diff) | |
Merge tag 'topic/i915-hda-componentized-2015-01-12' into drm-intel-next-queued
Conflicts:
drivers/gpu/drm/i915/intel_runtime_pm.c
Separate branch so that Takashi can also pull just this refactoring
into sound-next.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Diffstat (limited to 'arch/arm64/include/asm/alternative-asm.h')
| -rw-r--r-- | arch/arm64/include/asm/alternative-asm.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/alternative-asm.h b/arch/arm64/include/asm/alternative-asm.h new file mode 100644 index 000000000000..919a67855b63 --- /dev/null +++ b/arch/arm64/include/asm/alternative-asm.h @@ -0,0 +1,29 @@ +#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 + +#endif /* __ASSEMBLY__ */ + +#endif /* __ASM_ALTERNATIVE_ASM_H */ |