1 #include "perf.h"
2 #include "util/util.h"
3 #include "util/debug.h"
4 #include <subcmd/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 
12 struct branch_mode {
13 	const char *name;
14 	int mode;
15 };
16 
17 static 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 
34 int parse_branch_str(const char *str, __u64 *mode)
35 {
36 #define ONLY_PLM \
37 	(PERF_SAMPLE_BRANCH_USER	|\
38 	 PERF_SAMPLE_BRANCH_KERNEL	|\
39 	 PERF_SAMPLE_BRANCH_HV)
40 
41 	int ret = 0;
42 	char *p, *s;
43 	char *os = NULL;
44 	const struct branch_mode *br;
45 
46 	if (str == NULL) {
47 		*mode = PERF_SAMPLE_BRANCH_ANY;
48 		return 0;
49 	}
50 
51 	/* because str is read-only */
52 	s = os = strdup(str);
53 	if (!s)
54 		return -1;
55 
56 	for (;;) {
57 		p = strchr(s, ',');
58 		if (p)
59 			*p = '\0';
60 
61 		for (br = branch_modes; br->name; br++) {
62 			if (!strcasecmp(s, br->name))
63 				break;
64 		}
65 		if (!br->name) {
66 			ret = -1;
67 			pr_warning("unknown branch filter %s,"
68 				    " check man page\n", s);
69 			goto error;
70 		}
71 
72 		*mode |= br->mode;
73 
74 		if (!p)
75 			break;
76 
77 		s = p + 1;
78 	}
79 
80 	/* default to any branch */
81 	if ((*mode & ~ONLY_PLM) == 0) {
82 		*mode = PERF_SAMPLE_BRANCH_ANY;
83 	}
84 error:
85 	free(os);
86 	return ret;
87 }
88 
89 int
90 parse_branch_stack(const struct option *opt, const char *str, int unset)
91 {
92 	__u64 *mode = (__u64 *)opt->value;
93 
94 	if (unset)
95 		return 0;
96 
97 	/*
98 	 * cannot set it twice, -b + --branch-filter for instance
99 	 */
100 	if (*mode)
101 		return -1;
102 
103 	return parse_branch_str(str, mode);
104 }
105