--- zzzz-none-000/linux-3.10.107/arch/arm/include/asm/jump_label.h 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/arch/arm/include/asm/jump_label.h 2021-02-04 17:41:59.000000000 +0000 @@ -1,34 +1,40 @@ #ifndef _ASM_ARM_JUMP_LABEL_H #define _ASM_ARM_JUMP_LABEL_H -#ifdef __KERNEL__ +#ifndef __ASSEMBLY__ #include -#include +#include #define JUMP_LABEL_NOP_SIZE 4 -#ifdef CONFIG_THUMB2_KERNEL -#define JUMP_LABEL_NOP "nop.w" -#else -#define JUMP_LABEL_NOP "nop" -#endif - -static __always_inline bool arch_static_branch(struct static_key *key) +static __always_inline bool arch_static_branch(struct static_key *key, bool branch) { asm_volatile_goto("1:\n\t" - JUMP_LABEL_NOP "\n\t" + WASM(nop) "\n\t" ".pushsection __jump_table, \"aw\"\n\t" ".word 1b, %l[l_yes], %c0\n\t" ".popsection\n\t" - : : "i" (key) : : l_yes); + : : "i" (&((char *)key)[branch]) : : l_yes); return false; l_yes: return true; } -#endif /* __KERNEL__ */ +static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) +{ + asm_volatile_goto("1:\n\t" + WASM(b) " %l[l_yes]\n\t" + ".pushsection __jump_table, \"aw\"\n\t" + ".word 1b, %l[l_yes], %c0\n\t" + ".popsection\n\t" + : : "i" (&((char *)key)[branch]) : : l_yes); + + return false; +l_yes: + return true; +} typedef u32 jump_label_t; @@ -38,4 +44,5 @@ jump_label_t key; }; +#endif /* __ASSEMBLY__ */ #endif