blob: 70f9b9bfb1f9646a1bdfe3ab597c5b9c26e80b7e (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
#ifndef _ASM_ARM_JUMP_LABEL_H
#define _ASM_ARM_JUMP_LABEL_H
#ifdef __KERNEL__
#include <linux/types.h>
#define JUMP_LABEL_NOP_SIZE 4
#ifdef CONFIG_THUMB2_KERNEL
#define JUMP_LABEL_NOP "nop.w"
#else
#define JUMP_LABEL_NOP "nop"
#endif
static __always_inline bool arch_static_branch(struct static_key *key)
{
asm_volatile_goto("1:\n\t"
JUMP_LABEL_NOP "\n\t"
".pushsection __jump_table, \"aw\"\n\t"
".word 1b, %l[l_yes], %c0\n\t"
".popsection\n\t"
: : "i" (key) : : l_yes);
return false;
l_yes:
return true;
}
#endif /* __KERNEL__ */
typedef u32 jump_label_t;
struct jump_entry {
jump_label_t code;
jump_label_t target;
jump_label_t key;
};
#endif
|
