1 /* SPDX-License-Identifier: GPL-2.0-only */
2
3 #ifndef __ASM_CSKY_JUMP_LABEL_H
4 #define __ASM_CSKY_JUMP_LABEL_H
5
6 #ifndef __ASSEMBLY__
7
8 #include <linux/types.h>
9
10 #define JUMP_LABEL_NOP_SIZE 4
11
12 static __always_inline bool arch_static_branch(struct static_key *key,
13 bool branch)
14 {
15 asm goto(
16 "1: nop32 \n"
17 " .pushsection __jump_table, \"aw\" \n"
18 " .align 2 \n"
19 " .long 1b - ., %l[label] - . \n"
20 " .long %0 - . \n"
21 " .popsection \n"
22 : : "i"(&((char *)key)[branch]) : : label);
23
24 return false;
25 label:
26 return true;
27 }
28
29 static __always_inline bool arch_static_branch_jump(struct static_key *key,
30 bool branch)
31 {
32 asm goto(
33 "1: bsr32 %l[label] \n"
34 " .pushsection __jump_table, \"aw\" \n"
35 " .align 2 \n"
36 " .long 1b - ., %l[label] - . \n"
37 " .long %0 - . \n"
38 " .popsection \n"
39 : : "i"(&((char *)key)[branch]) : : label);
40
41 return false;
42 label:
43 return true;
44 }
45
46 enum jump_label_type;
47 void arch_jump_label_transform_static(struct jump_entry *entry,
48 enum jump_label_type type);
49 #define arch_jump_label_transform_static arch_jump_label_transform_static
50
51 #endif /* __ASSEMBLY__ */
52 #endif /* __ASM_CSKY_JUMP_LABEL_H */
53
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