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 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 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