1#include <sys/types.h>
 2#include <regex.h>
 3
 4struct arm_annotate {
 5	regex_t call_insn,
 6		jump_insn;
 7};
 8
 9static struct ins_ops *arm__associate_instruction_ops(struct arch *arch, const char *name)
10{
11	struct arm_annotate *arm = arch->priv;
12	struct ins_ops *ops;
13	regmatch_t match[2];
14
15	if (!regexec(&arm->call_insn, name, 2, match, 0))
16		ops = &call_ops;
17	else if (!regexec(&arm->jump_insn, name, 2, match, 0))
18		ops = &jump_ops;
19	else
20		return NULL;
21
22	arch__associate_ins_ops(arch, name, ops);
23	return ops;
24}
25
26static int arm__annotate_init(struct arch *arch)
27{
28	struct arm_annotate *arm;
29	int err;
30
31	if (arch->initialized)
32		return 0;
33
34	arm = zalloc(sizeof(*arm));
35	if (!arm)
36		return -1;
37
38#define ARM_CONDS "(cc|cs|eq|ge|gt|hi|le|ls|lt|mi|ne|pl|vc|vs)"
39	err = regcomp(&arm->call_insn, "^blx?" ARM_CONDS "?$", REG_EXTENDED);
40	if (err)
41		goto out_free_arm;
42	err = regcomp(&arm->jump_insn, "^bx?" ARM_CONDS "?$", REG_EXTENDED);
43	if (err)
44		goto out_free_call;
45#undef ARM_CONDS
46
47	arch->initialized = true;
48	arch->priv	  = arm;
49	arch->associate_instruction_ops   = arm__associate_instruction_ops;
50	arch->objdump.comment_char	  = ';';
51	arch->objdump.skip_functions_char = '+';
52	return 0;
53
54out_free_call:
55	regfree(&arm->call_insn);
56out_free_arm:
57	free(arm);
58	return -1;
59}