1#include <errno.h>
2#include "perf_regs.h"
3#include "event.h"
4
5int perf_reg_value(u64 *valp, struct regs_dump *regs, int id)
6{
7	int i, idx = 0;
8	u64 mask = regs->mask;
9
10	if (regs->cache_mask & (1 << id))
11		goto out;
12
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
21	regs->cache_mask |= (1 << id);
22	regs->cache_regs[id] = regs->regs[idx];
23
24out:
25	*valp = regs->cache_regs[id];
26	return 0;
27}
28