xref: /openbmc/linux/arch/arm/kernel/jump_label.c (revision c819e2cf)
1 #include <linux/kernel.h>
2 #include <linux/jump_label.h>
3 
4 #include "insn.h"
5 #include "patch.h"
6 
7 #ifdef HAVE_JUMP_LABEL
8 
9 static void __arch_jump_label_transform(struct jump_entry *entry,
10 					enum jump_label_type type,
11 					bool is_static)
12 {
13 	void *addr = (void *)entry->code;
14 	unsigned int insn;
15 
16 	if (type == JUMP_LABEL_ENABLE)
17 		insn = arm_gen_branch(entry->code, entry->target);
18 	else
19 		insn = arm_gen_nop();
20 
21 	if (is_static)
22 		__patch_text_early(addr, insn);
23 	else
24 		patch_text(addr, insn);
25 }
26 
27 void arch_jump_label_transform(struct jump_entry *entry,
28 			       enum jump_label_type type)
29 {
30 	__arch_jump_label_transform(entry, type, false);
31 }
32 
33 void arch_jump_label_transform_static(struct jump_entry *entry,
34 				      enum jump_label_type type)
35 {
36 	__arch_jump_label_transform(entry, type, true);
37 }
38 
39 #endif
40