#include <errno.h>
 #include "libunwind_mips.h"
 #include "perf_regs.h"
 #include "../../util/unwind.h"
 #include "../../util/debug.h"
 
 int libunwind__arch_reg_id(int regnum)
 {
 	switch (regnum) {
 	case UNW_MIPS_R1 ... UNW_MIPS_R25:
 		return regnum - UNW_MIPS_R1 + PERF_REG_MIPS_R1;
 	case UNW_MIPS_R28 ... UNW_MIPS_R31:
 		return regnum - UNW_MIPS_R28 + PERF_REG_MIPS_R28;
 	case UNW_MIPS_PC:
 		return PERF_REG_MIPS_PC;
 	default:
 		pr_err("unwind: invalid reg id %d\n", regnum);
 		return -EINVAL;
 	}
 }