28 lines
449 B
C
28 lines
449 B
C
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#include <errno.h>
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#include "perf_regs.h"
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#include "event.h"
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int perf_reg_value(u64 *valp, struct regs_dump *regs, int id)
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{
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int i, idx = 0;
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u64 mask = regs->mask;
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if (regs->cache_mask & (1 << id))
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goto out;
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if (!(mask & (1 << id)))
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return -EINVAL;
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for (i = 0; i < id; i++) {
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if (mask & (1 << i))
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idx++;
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}
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regs->cache_mask |= (1 << id);
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regs->cache_regs[id] = regs->regs[idx];
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out:
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*valp = regs->cache_regs[id];
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return 0;
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}
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