This source file includes following definitions.
- arch_static_branch
- arch_static_branch_jump
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8 #ifndef __ASM_JUMP_LABEL_H
9 #define __ASM_JUMP_LABEL_H
10
11 #ifndef __ASSEMBLY__
12
13 #include <linux/types.h>
14 #include <asm/insn.h>
15
16 #define JUMP_LABEL_NOP_SIZE AARCH64_INSN_SIZE
17
18 static __always_inline bool arch_static_branch(struct static_key *key,
19 bool branch)
20 {
21 asm_volatile_goto(
22 "1: nop \n\t"
23 " .pushsection __jump_table, \"aw\" \n\t"
24 " .align 3 \n\t"
25 " .long 1b - ., %l[l_yes] - . \n\t"
26 " .quad %c0 - . \n\t"
27 " .popsection \n\t"
28 : : "i"(&((char *)key)[branch]) : : l_yes);
29
30 return false;
31 l_yes:
32 return true;
33 }
34
35 static __always_inline bool arch_static_branch_jump(struct static_key *key,
36 bool branch)
37 {
38 asm_volatile_goto(
39 "1: b %l[l_yes] \n\t"
40 " .pushsection __jump_table, \"aw\" \n\t"
41 " .align 3 \n\t"
42 " .long 1b - ., %l[l_yes] - . \n\t"
43 " .quad %c0 - . \n\t"
44 " .popsection \n\t"
45 : : "i"(&((char *)key)[branch]) : : l_yes);
46
47 return false;
48 l_yes:
49 return true;
50 }
51
52 #endif
53 #endif