#ifndef __ASM_LSE_H #define __ASM_LSE_H #if defined(CONFIG_AS_LSE) && defined([31mCONFIG_ARM64_LSE_ATOMICS[0m) #include <linux/stringify.h> #include <asm/alternative.h> #ifdef __ASSEMBLER__ .arch_extension lse .macro alt_lse, llsc, lse alternative_insn "\llsc", "\lse", ARM64_HAS_LSE_ATOMICS .endm #else /* __ASSEMBLER__ */ __asm__(".arch_extension lse"); /* Move the ll/sc atomics out-of-line */ #define __LL_SC_INLINE #define __LL_SC_PREFIX(x) __ll_sc_##x #define __LL_SC_EXPORT(x) EXPORT_SYMBOL(__LL_SC_PREFIX(x)) /* Macro for constructing calls to out-of-line ll/sc atomics */ #define __LL_SC_CALL(op) "bl\t" __stringify(__LL_SC_PREFIX(op)) "\n" #define __LL_SC_CLOBBERS "x16", "x17", "x30" /* In-line patching at runtime */ #define ARM64_LSE_ATOMIC_INSN(llsc, lse) \ ALTERNATIVE(llsc, lse, ARM64_HAS_LSE_ATOMICS) #endif /* __ASSEMBLER__ */ #else /* CONFIG_AS_LSE && CONFIG_ARM64_LSE_ATOMICS */ #ifdef __ASSEMBLER__ .macro alt_lse, llsc, lse \llsc .endm #else /* __ASSEMBLER__ */ #define __LL_SC_INLINE static inline #define __LL_SC_PREFIX(x) x #define __LL_SC_EXPORT(x) #define ARM64_LSE_ATOMIC_INSN(llsc, lse) llsc #endif /* __ASSEMBLER__ */ #endif /* CONFIG_AS_LSE && CONFIG_ARM64_LSE_ATOMICS */ #endif /* __ASM_LSE_H */ |