From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- tools/perf/util/parse-regs-options.c | 72 ++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 tools/perf/util/parse-regs-options.c (limited to 'tools/perf/util/parse-regs-options.c') diff --git a/tools/perf/util/parse-regs-options.c b/tools/perf/util/parse-regs-options.c new file mode 100644 index 000000000..e5ad120e7 --- /dev/null +++ b/tools/perf/util/parse-regs-options.c @@ -0,0 +1,72 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "perf.h" +#include "util/util.h" +#include "util/debug.h" +#include +#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; +} -- cgit v1.2.3