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
arch_static_branch(struct static_key * key,bool branch)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
arch_static_branch_jump(struct static_key * key,bool branch)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