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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
dff9d3c2 DM |
2 | #ifndef _ASM_SPARC_JUMP_LABEL_H |
3 | #define _ASM_SPARC_JUMP_LABEL_H | |
4 | ||
55dd0df7 | 5 | #ifndef __ASSEMBLY__ |
dff9d3c2 DM |
6 | |
7 | #include <linux/types.h> | |
dff9d3c2 DM |
8 | |
9 | #define JUMP_LABEL_NOP_SIZE 4 | |
10 | ||
11276d53 | 11 | static __always_inline bool arch_static_branch(struct static_key *key, bool branch) |
d430d3d7 | 12 | { |
11276d53 PZ |
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 | ||
d430d3d7 JB |
38 | return false; |
39 | l_yes: | |
40 | return true; | |
41 | } | |
dff9d3c2 | 42 | |
dff9d3c2 DM |
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 | ||
55dd0df7 | 51 | #endif /* __ASSEMBLY__ */ |
dff9d3c2 | 52 | #endif |