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

 1#ifndef _ASM_ARM_JUMP_LABEL_H
 2#define _ASM_ARM_JUMP_LABEL_H
 3
 4#ifndef __ASSEMBLY__
 5
 6#include <linux/types.h>
 7#include <asm/unified.h>
 8
 9#define JUMP_LABEL_NOP_SIZE 4
10
11static __always_inline bool arch_static_branch(struct static_key *key, bool branch)
 
 
 
 
 
 
12{
13	asm_volatile_goto("1:\n\t"
14		 WASM(nop) "\n\t"
15		 ".pushsection __jump_table,  \"aw\"\n\t"
16		 ".word 1b, %l[l_yes], %c0\n\t"
17		 ".popsection\n\t"
18		 : :  "i" (&((char *)key)[branch]) :  : l_yes);
19
20	return false;
21l_yes:
22	return true;
23}
24
25static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch)
26{
27	asm_volatile_goto("1:\n\t"
28		 WASM(b) " %l[l_yes]\n\t"
29		 ".pushsection __jump_table,  \"aw\"\n\t"
30		 ".word 1b, %l[l_yes], %c0\n\t"
31		 ".popsection\n\t"
32		 : :  "i" (&((char *)key)[branch]) :  : l_yes);
33
34	return false;
35l_yes:
36	return true;
37}
38
39typedef u32 jump_label_t;
40
41struct jump_entry {
42	jump_label_t code;
43	jump_label_t target;
44	jump_label_t key;
45};
46
47#endif  /* __ASSEMBLY__ */
48#endif