1 #ifndef _ASM_SPARC_JUMP_LABEL_H 2 #define _ASM_SPARC_JUMP_LABEL_H 3 4 #ifndef __ASSEMBLY__ 5 6 #include <linux/types.h> 7 8 #define JUMP_LABEL_NOP_SIZE 4 9 10 static __always_inline bool arch_static_branch(struct static_key *key, bool branch) 11 { 12 asm_volatile_goto("1:\n\t" 13 "nop\n\t" 14 "nop\n\t" 15 ".pushsection __jump_table, \"aw\"\n\t" 16 ".align 4\n\t" 17 ".word 1b, %l[l_yes], %c0\n\t" 18 ".popsection \n\t" 19 : : "i" (&((char *)key)[branch]) : : l_yes); 20 21 return false; 22 l_yes: 23 return true; 24 } 25 26 static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) 27 { 28 asm_volatile_goto("1:\n\t" 29 "b %l[l_yes]\n\t" 30 "nop\n\t" 31 ".pushsection __jump_table, \"aw\"\n\t" 32 ".align 4\n\t" 33 ".word 1b, %l[l_yes], %c0\n\t" 34 ".popsection \n\t" 35 : : "i" (&((char *)key)[branch]) : : l_yes); 36 37 return false; 38 l_yes: 39 return true; 40 } 41 42 typedef u32 jump_label_t; 43 44 struct jump_entry { 45 jump_label_t code; 46 jump_label_t target; 47 jump_label_t key; 48 }; 49 50 #endif /* __ASSEMBLY__ */ 51 #endif 52