1#include "perf.h"
2#include "util/util.h"
3#include "util/debug.h"
4#include "util/parse-options.h"
5#include "util/parse-branch-options.h"
6
7#define BRANCH_OPT(n, m) \
8	{ .name = n, .mode = (m) }
9
10#define BRANCH_END { .name = NULL }
11
12struct branch_mode {
13	const char *name;
14	int mode;
15};
16
17static const struct branch_mode branch_modes[] = {
18	BRANCH_OPT("u", PERF_SAMPLE_BRANCH_USER),
19	BRANCH_OPT("k", PERF_SAMPLE_BRANCH_KERNEL),
20	BRANCH_OPT("hv", PERF_SAMPLE_BRANCH_HV),
21	BRANCH_OPT("any", PERF_SAMPLE_BRANCH_ANY),
22	BRANCH_OPT("any_call", PERF_SAMPLE_BRANCH_ANY_CALL),
23	BRANCH_OPT("any_ret", PERF_SAMPLE_BRANCH_ANY_RETURN),
24	BRANCH_OPT("ind_call", PERF_SAMPLE_BRANCH_IND_CALL),
25	BRANCH_OPT("abort_tx", PERF_SAMPLE_BRANCH_ABORT_TX),
26	BRANCH_OPT("in_tx", PERF_SAMPLE_BRANCH_IN_TX),
27	BRANCH_OPT("no_tx", PERF_SAMPLE_BRANCH_NO_TX),
28	BRANCH_OPT("cond", PERF_SAMPLE_BRANCH_COND),
29	BRANCH_OPT("ind_jmp", PERF_SAMPLE_BRANCH_IND_JUMP),
30	BRANCH_OPT("call", PERF_SAMPLE_BRANCH_CALL),
31	BRANCH_END
32};
33
34int
35parse_branch_stack(const struct option *opt, const char *str, int unset)
36{
37#define ONLY_PLM \
38	(PERF_SAMPLE_BRANCH_USER	|\
39	 PERF_SAMPLE_BRANCH_KERNEL	|\
40	 PERF_SAMPLE_BRANCH_HV)
41
42	uint64_t *mode = (uint64_t *)opt->value;
43	const struct branch_mode *br;
44	char *s, *os = NULL, *p;
45	int ret = -1;
46
47	if (unset)
48		return 0;
49
50	/*
51	 * cannot set it twice, -b + --branch-filter for instance
52	 */
53	if (*mode)
54		return -1;
55
56	/* str may be NULL in case no arg is passed to -b */
57	if (str) {
58		/* because str is read-only */
59		s = os = strdup(str);
60		if (!s)
61			return -1;
62
63		for (;;) {
64			p = strchr(s, ',');
65			if (p)
66				*p = '\0';
67
68			for (br = branch_modes; br->name; br++) {
69				if (!strcasecmp(s, br->name))
70					break;
71			}
72			if (!br->name) {
73				ui__warning("unknown branch filter %s,"
74					    " check man page\n", s);
75				goto error;
76			}
77
78			*mode |= br->mode;
79
80			if (!p)
81				break;
82
83			s = p + 1;
84		}
85	}
86	ret = 0;
87
88	/* default to any branch */
89	if ((*mode & ~ONLY_PLM) == 0) {
90		*mode = PERF_SAMPLE_BRANCH_ANY;
91	}
92error:
93	free(os);
94	return ret;
95}
96