1// SPDX-License-Identifier: GPL-2.0
2#include "util/debug.h"
3#include "util/event.h"
4#include <subcmd/parse-options.h>
5#include "util/parse-branch-options.h"
6#include <stdlib.h>
7#include <string.h>
8
9#define BRANCH_OPT(n, m) \
10	{ .name = n, .mode = (m) }
11
12#define BRANCH_END { .name = NULL }
13
14struct branch_mode {
15	const char *name;
16	int mode;
17};
18
19static const struct branch_mode branch_modes[] = {
20	BRANCH_OPT("u", PERF_SAMPLE_BRANCH_USER),
21	BRANCH_OPT("k", PERF_SAMPLE_BRANCH_KERNEL),
22	BRANCH_OPT("hv", PERF_SAMPLE_BRANCH_HV),
23	BRANCH_OPT("any", PERF_SAMPLE_BRANCH_ANY),
24	BRANCH_OPT("any_call", PERF_SAMPLE_BRANCH_ANY_CALL),
25	BRANCH_OPT("any_ret", PERF_SAMPLE_BRANCH_ANY_RETURN),
26	BRANCH_OPT("ind_call", PERF_SAMPLE_BRANCH_IND_CALL),
27	BRANCH_OPT("abort_tx", PERF_SAMPLE_BRANCH_ABORT_TX),
28	BRANCH_OPT("in_tx", PERF_SAMPLE_BRANCH_IN_TX),
29	BRANCH_OPT("no_tx", PERF_SAMPLE_BRANCH_NO_TX),
30	BRANCH_OPT("cond", PERF_SAMPLE_BRANCH_COND),
31	BRANCH_OPT("ind_jmp", PERF_SAMPLE_BRANCH_IND_JUMP),
32	BRANCH_OPT("call", PERF_SAMPLE_BRANCH_CALL),
33	BRANCH_OPT("save_type", PERF_SAMPLE_BRANCH_TYPE_SAVE),
34	BRANCH_OPT("stack", PERF_SAMPLE_BRANCH_CALL_STACK),
35	BRANCH_END
36};
37
38int parse_branch_str(const char *str, __u64 *mode)
39{
40#define ONLY_PLM \
41	(PERF_SAMPLE_BRANCH_USER	|\
42	 PERF_SAMPLE_BRANCH_KERNEL	|\
43	 PERF_SAMPLE_BRANCH_HV)
44
45	int ret = 0;
46	char *p, *s;
47	char *os = NULL;
48	const struct branch_mode *br;
49
50	if (str == NULL) {
51		*mode = PERF_SAMPLE_BRANCH_ANY;
52		return 0;
53	}
54
55	/* because str is read-only */
56	s = os = strdup(str);
57	if (!s)
58		return -1;
59
60	for (;;) {
61		p = strchr(s, ',');
62		if (p)
63			*p = '\0';
64
65		for (br = branch_modes; br->name; br++) {
66			if (!strcasecmp(s, br->name))
67				break;
68		}
69		if (!br->name) {
70			ret = -1;
71			pr_warning("unknown branch filter %s,"
72				    " check man page\n", s);
73			goto error;
74		}
75
76		*mode |= br->mode;
77
78		if (!p)
79			break;
80
81		s = p + 1;
82	}
83
84	/* default to any branch */
85	if ((*mode & ~ONLY_PLM) == 0) {
86		*mode = PERF_SAMPLE_BRANCH_ANY;
87	}
88error:
89	free(os);
90	return ret;
91}
92
93int
94parse_branch_stack(const struct option *opt, const char *str, int unset)
95{
96	__u64 *mode = (__u64 *)opt->value;
97
98	if (unset)
99		return 0;
100
101	/*
102	 * cannot set it twice, -b + --branch-filter for instance
103	 */
104	if (*mode)
105		return -1;
106
107	return parse_branch_str(str, mode);
108}
109