Stephane Eranian | bcc84ec | 2015-08-31 18:41:12 +0200 | [diff] [blame] | 1 | #include "perf.h" |
| 2 | #include "util/util.h" |
| 3 | #include "util/debug.h" |
Josh Poimboeuf | 4b6ab94 | 2015-12-15 09:39:39 -0600 | [diff] [blame] | 4 | #include <subcmd/parse-options.h> |
Stephane Eranian | bcc84ec | 2015-08-31 18:41:12 +0200 | [diff] [blame] | 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 | } |