/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2023 Loongson Technology Corporation Limited * * Based on arch/arm64/include/asm/jump_label.h */ #ifndef __ASM_JUMP_LABEL_H #define __ASM_JUMP_LABEL_H #ifndef __ASSEMBLY__ #include <linux/types.h> #define JUMP_LABEL_NOP_SIZE 4 #define JUMP_TABLE_ENTRY \ ".pushsection __jump_table, \"aw\" \n\t" \ ".align 3 \n\t" \ ".long 1b - ., %l[l_yes] - . \n\t" \ ".quad %0 - . \n\t" \ ".popsection \n\t" static __always_inline bool arch_static_branch(struct static_key * const key, const bool branch) { asm goto( "1: nop \n\t" JUMP_TABLE_ENTRY : : "i"(&((char *)key)[branch]) : : l_yes); return false; l_yes: return true; } static __always_inline bool arch_static_branch_jump(struct static_key * const key, const bool branch) { asm goto( "1: b %l[l_yes] \n\t" JUMP_TABLE_ENTRY : : "i"(&((char *)key)[branch]) : : l_yes); return false; l_yes: return true; } #endif /* __ASSEMBLY__ */ #endif /* __ASM_JUMP_LABEL_H */