1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _ASM_ARM_JUMP_LABEL_H
 3#define _ASM_ARM_JUMP_LABEL_H
 4
 5#ifndef __ASSEMBLY__
 6
 7#include <linux/types.h>
 8#include <asm/unified.h>
 9
10#define JUMP_LABEL_NOP_SIZE 4
11
12static __always_inline bool arch_static_branch(struct static_key *key, bool branch)
13{
14	asm_volatile_goto("1:\n\t"
15		 WASM(nop) "\n\t"
16		 ".pushsection __jump_table,  \"aw\"\n\t"
17		 ".word 1b, %l[l_yes], %c0\n\t"
18		 ".popsection\n\t"
19		 : :  "i" (&((char *)key)[branch]) :  : l_yes);
20
21	return false;
22l_yes:
23	return true;
24}
25
26static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch)
27{
28	asm_volatile_goto("1:\n\t"
29		 WASM(b) " %l[l_yes]\n\t"
30		 ".pushsection __jump_table,  \"aw\"\n\t"
31		 ".word 1b, %l[l_yes], %c0\n\t"
32		 ".popsection\n\t"
33		 : :  "i" (&((char *)key)[branch]) :  : l_yes);
34
35	return false;
36l_yes:
37	return true;
38}
39
 
 
40typedef u32 jump_label_t;
41
42struct jump_entry {
43	jump_label_t code;
44	jump_label_t target;
45	jump_label_t key;
46};
47
48#endif  /* __ASSEMBLY__ */
49#endif

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