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
35 parse_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 	}
92 error:
93 	free(os);
94 	return ret;
95 }
96