| #include <errno.h> |
| #include "perf_regs.h" |
| #include "event.h" |
| |
| const struct sample_reg __weak sample_reg_masks[] = { |
| SMPL_REG_END |
| }; |
| |
| #ifdef HAVE_PERF_REGS_SUPPORT |
| int perf_reg_value(u64 *valp, struct regs_dump *regs, int id) |
| { |
| int i, idx = 0; |
| u64 mask = regs->mask; |
| |
| if (regs->cache_mask & (1ULL << id)) |
| goto out; |
| |
| if (!(mask & (1ULL << id))) |
| return -EINVAL; |
| |
| for (i = 0; i < id; i++) { |
| if (mask & (1ULL << i)) |
| idx++; |
| } |
| |
| regs->cache_mask |= (1ULL << id); |
| regs->cache_regs[id] = regs->regs[idx]; |
| |
| out: |
| *valp = regs->cache_regs[id]; |
| return 0; |
| } |
| #endif |
