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_OPT("save_type", PERF_SAMPLE_BRANCH_TYPE_SAVE),
32 	BRANCH_END
33 };
34 
35 int parse_branch_str(const char *str, __u64 *mode)
36 {
37 #define ONLY_PLM \
38 	(PERF_SAMPLE_BRANCH_USER	|\
39 	 PERF_SAMPLE_BRANCH_KERNEL	|\
40 	 PERF_SAMPLE_BRANCH_HV)
41 
42 	int ret = 0;
43 	char *p, *s;
44 	char *os = NULL;
45 	const struct branch_mode *br;
46 
47 	if (str == NULL) {
48 		*mode = PERF_SAMPLE_BRANCH_ANY;
49 		return 0;
50 	}
51 
52 	/* because str is read-only */
53 	s = os = strdup(str);
54 	if (!s)
55 		return -1;
56 
57 	for (;;) {
58 		p = strchr(s, ',');
59 		if (p)
60 			*p = '\0';
61 
62 		for (br = branch_modes; br->name; br++) {
63 			if (!strcasecmp(s, br->name))
64 				break;
65 		}
66 		if (!br->name) {
67 			ret = -1;
68 			pr_warning("unknown branch filter %s,"
69 				    " check man page\n", s);
70 			goto error;
71 		}
72 
73 		*mode |= br->mode;
74 
75 		if (!p)
76 			break;
77 
78 		s = p + 1;
79 	}
80 
81 	/* default to any branch */
82 	if ((*mode & ~ONLY_PLM) == 0) {
83 		*mode = PERF_SAMPLE_BRANCH_ANY;
84 	}
85 error:
86 	free(os);
87 	return ret;
88 }
89 
90 int
91 parse_branch_stack(const struct option *opt, const char *str, int unset)
92 {
93 	__u64 *mode = (__u64 *)opt->value;
94 
95 	if (unset)
96 		return 0;
97 
98 	/*
99 	 * cannot set it twice, -b + --branch-filter for instance
100 	 */
101 	if (*mode)
102 		return -1;
103 
104 	return parse_branch_str(str, mode);
105 }
106