1 #include "perf.h" 2 #include "util/util.h" 3 #include "util/debug.h" 4 #include "util/parse-options.h" 5 #include "util/parse-regs-options.h" 6 7 int 8 parse_regs(const struct option *opt, const char *str, int unset) 9 { 10 uint64_t *mode = (uint64_t *)opt->value; 11 const struct sample_reg *r; 12 char *s, *os = NULL, *p; 13 int ret = -1; 14 15 if (unset) 16 return 0; 17 18 /* 19 * cannot set it twice 20 */ 21 if (*mode) 22 return -1; 23 24 /* str may be NULL in case no arg is passed to -I */ 25 if (str) { 26 /* because str is read-only */ 27 s = os = strdup(str); 28 if (!s) 29 return -1; 30 31 for (;;) { 32 p = strchr(s, ','); 33 if (p) 34 *p = '\0'; 35 36 if (!strcmp(s, "?")) { 37 fprintf(stderr, "available registers: "); 38 for (r = sample_reg_masks; r->name; r++) { 39 fprintf(stderr, "%s ", r->name); 40 } 41 fputc('\n', stderr); 42 /* just printing available regs */ 43 return -1; 44 } 45 for (r = sample_reg_masks; r->name; r++) { 46 if (!strcasecmp(s, r->name)) 47 break; 48 } 49 if (!r->name) { 50 ui__warning("unknown register %s," 51 " check man page\n", s); 52 goto error; 53 } 54 55 *mode |= r->mask; 56 57 if (!p) 58 break; 59 60 s = p + 1; 61 } 62 } 63 ret = 0; 64 65 /* default to all possible regs */ 66 if (*mode == 0) 67 *mode = PERF_REGS_MASK; 68 error: 69 free(os); 70 return ret; 71 } 72