[deliverable/linux.git] / tools / perf / util / perf_regs.c

#include <errno.h>
#include "perf_regs.h"
#include "event.h"

int perf_reg_value(u64 *valp, struct regs_dump *regs, int id)
{
	int i, idx = 0;
	u64 mask = regs->mask;

	if (regs->cache_mask & (1 << id))
		goto out;

	if (!(mask & (1 << id)))
		return -EINVAL;

	for (i = 0; i < id; i++) {
		if (mask & (1 << i))
			idx++;
	}

	regs->cache_mask |= (1 << id);
	regs->cache_regs[id] = regs->regs[idx];

out:
	*valp = regs->cache_regs[id];
	return 0;
}
Commit	Line	Data
c9b951c4 JO	1	#include <errno.h>
c9b951c4 JO	2	#include "perf_regs.h"
0c4e774f	3	#include "event.h"
c9b951c4 JO	4
	5	int perf_reg_value(u64 valp, struct regs_dump regs, int id)
	6	{
	7	int i, idx = 0;
	8	u64 mask = regs->mask;
	9
0c4e774f JO	10	if (regs->cache_mask & (1 << id))
	11	goto out;
	12
c9b951c4 JO	13	if (!(mask & (1 << id)))
	14	return -EINVAL;
	15
	16	for (i = 0; i < id; i++) {
	17	if (mask & (1 << i))
	18	idx++;
	19	}
	20
0c4e774f JO	21	regs->cache_mask \|= (1 << id);
	22	regs->cache_regs[id] = regs->regs[idx];
	23
	24	out:
	25	*valp = regs->cache_regs[id];
c9b951c4 JO	26	return 0;
c9b951c4 JO	27	}