1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_SPARC_JUMP_LABEL_H 3 #define _ASM_SPARC_JUMP_LABEL_H 4 5 #ifndef __ASSEMBLY__ 6 7 #include <linux/types.h> 8 9 #define JUMP_LABEL_NOP_SIZE 4 10 11 static __always_inline bool arch_static_branch(struct static_key *key, bool branch) 12 { 13 asm_volatile_goto("1:\n\t" 14 "nop\n\t" 15 "nop\n\t" 16 ".pushsection __jump_table, \"aw\"\n\t" 17 ".align 4\n\t" 18 ".word 1b, %l[l_yes], %c0\n\t" 19 ".popsection \n\t" 20 : : "i" (&((char *)key)[branch]) : : l_yes); 21 22 return false; 23 l_yes: 24 return true; 25 } 26 27 static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) 28 { 29 asm_volatile_goto("1:\n\t" 30 "b %l[l_yes]\n\t" 31 "nop\n\t" 32 ".pushsection __jump_table, \"aw\"\n\t" 33 ".align 4\n\t" 34 ".word 1b, %l[l_yes], %c0\n\t" 35 ".popsection \n\t" 36 : : "i" (&((char *)key)[branch]) : : l_yes); 37 38 return false; 39 l_yes: 40 return true; 41 } 42 43 typedef u32 jump_label_t; 44 45 struct jump_entry { 46 jump_label_t code; 47 jump_label_t target; 48 jump_label_t key; 49 }; 50 51 #endif /* __ASSEMBLY__ */ 52 #endif 53