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| // SPDX-License-Identifier: GPL-2.0
| #include "perf.h"
| #include "util/util.h"
| #include "util/debug.h"
| #include <subcmd/parse-options.h>
| #include "util/parse-regs-options.h"
|
| int
| parse_regs(const struct option *opt, const char *str, int unset)
| {
| uint64_t *mode = (uint64_t *)opt->value;
| const struct sample_reg *r;
| char *s, *os = NULL, *p;
| int ret = -1;
|
| if (unset)
| return 0;
|
| /*
| * cannot set it twice
| */
| if (*mode)
| return -1;
|
| /* str may be NULL in case no arg is passed to -I */
| if (str) {
| /* because str is read-only */
| s = os = strdup(str);
| if (!s)
| return -1;
|
| for (;;) {
| p = strchr(s, ',');
| if (p)
| *p = '\0';
|
| if (!strcmp(s, "?")) {
| fprintf(stderr, "available registers: ");
| for (r = sample_reg_masks; r->name; r++) {
| fprintf(stderr, "%s ", r->name);
| }
| fputc('\n', stderr);
| /* just printing available regs */
| goto error;
| }
| for (r = sample_reg_masks; r->name; r++) {
| if (!strcasecmp(s, r->name))
| break;
| }
| if (!r->name) {
| ui__warning("unknown register %s,"
| " check man page\n", s);
| goto error;
| }
|
| *mode |= r->mask;
|
| if (!p)
| break;
|
| s = p + 1;
| }
| }
| ret = 0;
|
| /* default to all possible regs */
| if (*mode == 0)
| *mode = PERF_REGS_MASK;
| error:
| free(os);
| return ret;
| }
|
|
