On Wed, Aug 19, 2015 at 10:38:25AM +0200, Stephane Eranian wrote:
SNIP
> diff --git a/tools/perf/util/parse-regs-options.c
> b/tools/perf/util/parse-regs-options.c
> new file mode 100644
> index 0000000..4f2c1c2
> --- /dev/null
> +++ b/tools/perf/util/parse-regs-options.c
> @@ -0,0 +1,71 @@
> +#include "perf.h"
> +#include "util/util.h"
> +#include "util/debug.h"
> +#include "util/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 */
> + return -1;
> + }
> + for (r = sample_reg_masks; r->name; r++) {
the new 'I' is arch dependent, would this fail to link on
other archs besides x86_64 ? haven't tried though
jirka
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