1 #include <errno.h> 2 #include "perf_regs.h" 3 4 int perf_reg_value(u64 *valp, struct regs_dump *regs, int id) 5 { 6 int i, idx = 0; 7 u64 mask = regs->mask; 8 9 if (!(mask & (1 << id))) 10 return -EINVAL; 11 12 for (i = 0; i < id; i++) { 13 if (mask & (1 << i)) 14 idx++; 15 } 16 17 *valp = regs->regs[idx]; 18 return 0; 19 } 20