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dff9d3c2 DM |
1 | #ifndef _ASM_SPARC_JUMP_LABEL_H |
2 | #define _ASM_SPARC_JUMP_LABEL_H | |
3 | ||
55dd0df7 | 4 | #ifndef __ASSEMBLY__ |
dff9d3c2 DM |
5 | |
6 | #include <linux/types.h> | |
dff9d3c2 DM |
7 | |
8 | #define JUMP_LABEL_NOP_SIZE 4 | |
9 | ||
11276d53 | 10 | static __always_inline bool arch_static_branch(struct static_key *key, bool branch) |
d430d3d7 | 11 | { |
11276d53 PZ |
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 | ||
d430d3d7 JB |
37 | return false; |
38 | l_yes: | |
39 | return true; | |
40 | } | |
dff9d3c2 | 41 | |
dff9d3c2 DM |
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 | ||
55dd0df7 | 50 | #endif /* __ASSEMBLY__ */ |
dff9d3c2 | 51 | #endif |