1#ifndef _ASM_ARM_JUMP_LABEL_H 2#define _ASM_ARM_JUMP_LABEL_H 3 4#ifndef __ASSEMBLY__ 5 6#include <linux/types.h> 7#include <asm/unified.h> 8 9#define JUMP_LABEL_NOP_SIZE 4 10 11static __always_inline bool arch_static_branch(struct static_key *key, bool branch) 12{ 13 asm_volatile_goto("1:\n\t" 14 WASM(nop) "\n\t" 15 ".pushsection __jump_table, \"aw\"\n\t" 16 ".word 1b, %l[l_yes], %c0\n\t" 17 ".popsection\n\t" 18 : : "i" (&((char *)key)[branch]) : : l_yes); 19 20 return false; 21l_yes: 22 return true; 23} 24 25static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) 26{ 27 asm_volatile_goto("1:\n\t" 28 WASM(b) " %l[l_yes]\n\t" 29 ".pushsection __jump_table, \"aw\"\n\t" 30 ".word 1b, %l[l_yes], %c0\n\t" 31 ".popsection\n\t" 32 : : "i" (&((char *)key)[branch]) : : l_yes); 33 34 return false; 35l_yes: 36 return true; 37} 38 39typedef u32 jump_label_t; 40 41struct jump_entry { 42 jump_label_t code; 43 jump_label_t target; 44 jump_label_t key; 45}; 46 47#endif /* __ASSEMBLY__ */ 48#endif 49