ARM: 7334/1: add jump label support
[linux-3.10.git] / arch / arm / kernel / jump_label.c
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(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