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#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;
}
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