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("no_flags", PERF_SAMPLE_BRANCH_NO_FLAGS),
34	BRANCH_OPT("no_cycles", PERF_SAMPLE_BRANCH_NO_CYCLES),
35	BRANCH_OPT("save_type", PERF_SAMPLE_BRANCH_TYPE_SAVE),
36	BRANCH_OPT("stack", PERF_SAMPLE_BRANCH_CALL_STACK),
37	BRANCH_OPT("hw_index", PERF_SAMPLE_BRANCH_HW_INDEX),
38	BRANCH_OPT("priv", PERF_SAMPLE_BRANCH_PRIV_SAVE),
39	BRANCH_END
40};
41
42int parse_branch_str(const char *str, __u64 *mode)
43{
44#define ONLY_PLM \
45	(PERF_SAMPLE_BRANCH_USER	|\
46	 PERF_SAMPLE_BRANCH_KERNEL	|\
47	 PERF_SAMPLE_BRANCH_HV)
48
49	int ret = 0;
50	char *p, *s;
51	char *os = NULL;
52	const struct branch_mode *br;
53
54	if (str == NULL) {
55		*mode = PERF_SAMPLE_BRANCH_ANY;
56		return 0;
57	}
58
59	/* because str is read-only */
60	s = os = strdup(str);
61	if (!s)
62		return -1;
63
64	for (;;) {
65		p = strchr(s, ',');
66		if (p)
67			*p = '\0';
68
69		for (br = branch_modes; br->name; br++) {
70			if (!strcasecmp(s, br->name))
71				break;
72		}
73		if (!br->name) {
74			ret = -1;
75			pr_warning("unknown branch filter %s,"
76				    " check man page\n", s);
77			goto error;
78		}
79
80		*mode |= br->mode;
81
82		if (!p)
83			break;
84
85		s = p + 1;
86	}
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
97int
98parse_branch_stack(const struct option *opt, const char *str, int unset)
99{
100	__u64 *mode = (__u64 *)opt->value;
101
102	if (unset)
103		return 0;
104
105	/*
106	 * cannot set it twice, -b + --branch-filter for instance
107	 */
108	if (*mode) {
109		pr_err("Error: Can't use --branch-any (-b) with --branch-filter (-j).\n");
110		return -1;
111	}
112
113	return parse_branch_str(str, mode);
114}
115