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99 lines
1.9 KiB
99 lines
1.9 KiB
// SPDX-License-Identifier: GPL-2.0 |
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#include <stdbool.h> |
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#include <stdlib.h> |
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#include <stdint.h> |
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#include <string.h> |
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#include <stdio.h> |
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#include "util/debug.h" |
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#include <subcmd/parse-options.h> |
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#include "util/perf_regs.h" |
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#include "util/parse-regs-options.h" |
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static int |
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__parse_regs(const struct option *opt, const char *str, int unset, bool intr) |
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{ |
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uint64_t *mode = (uint64_t *)opt->value; |
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const struct sample_reg *r = NULL; |
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char *s, *os = NULL, *p; |
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int ret = -1; |
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uint64_t mask; |
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if (unset) |
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return 0; |
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/* |
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* cannot set it twice |
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*/ |
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if (*mode) |
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return -1; |
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if (intr) |
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mask = arch__intr_reg_mask(); |
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else |
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mask = arch__user_reg_mask(); |
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/* str may be NULL in case no arg is passed to -I */ |
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if (str) { |
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/* because str is read-only */ |
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s = os = strdup(str); |
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if (!s) |
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return -1; |
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for (;;) { |
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p = strchr(s, ','); |
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if (p) |
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*p = '\0'; |
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if (!strcmp(s, "?")) { |
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fprintf(stderr, "available registers: "); |
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#ifdef HAVE_PERF_REGS_SUPPORT |
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for (r = sample_reg_masks; r->name; r++) { |
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if (r->mask & mask) |
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fprintf(stderr, "%s ", r->name); |
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} |
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#endif |
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fputc('\n', stderr); |
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/* just printing available regs */ |
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goto error; |
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} |
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#ifdef HAVE_PERF_REGS_SUPPORT |
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for (r = sample_reg_masks; r->name; r++) { |
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if ((r->mask & mask) && !strcasecmp(s, r->name)) |
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break; |
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} |
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#endif |
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if (!r || !r->name) { |
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ui__warning("Unknown register \"%s\", check man page or run \"perf record %s?\"\n", |
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s, intr ? "-I" : "--user-regs="); |
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goto error; |
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} |
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*mode |= r->mask; |
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if (!p) |
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break; |
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s = p + 1; |
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} |
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} |
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ret = 0; |
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/* default to all possible regs */ |
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if (*mode == 0) |
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*mode = mask; |
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error: |
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free(os); |
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return ret; |
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} |
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int |
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parse_user_regs(const struct option *opt, const char *str, int unset) |
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{ |
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return __parse_regs(opt, str, unset, false); |
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} |
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int |
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parse_intr_regs(const struct option *opt, const char *str, int unset) |
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{ |
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return __parse_regs(opt, str, unset, true); |
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}
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