unwind-libunwind.c

 1// SPDX-License-Identifier: GPL-2.0
 2
 3#include <errno.h>
 4#include <libunwind.h>
 5#include "perf_regs.h"
 6#include "../../util/unwind.h"
 7#include "util/debug.h"
 8
 9int libunwind__arch_reg_id(int regnum)
10{
11	switch (regnum) {
12	case UNW_MIPS_R1 ... UNW_MIPS_R25:
13		return regnum - UNW_MIPS_R1 + PERF_REG_MIPS_R1;
14	case UNW_MIPS_R28 ... UNW_MIPS_R31:
15		return regnum - UNW_MIPS_R28 + PERF_REG_MIPS_R28;
16	case UNW_MIPS_PC:
17		return PERF_REG_MIPS_PC;
18	default:
19		pr_err("unwind: invalid reg id %d\n", regnum);
20		return -EINVAL;
21	}
22}