unwind-libunwind.c

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// SPDX-License-Identifier: GPL-2.0

#include <errno.h>
#include <libunwind.h>
#include "perf_regs.h"
#include "../../util/unwind.h"
#include "../../util/debug.h"

int libunwind__arch_reg_id(int regnum)
{
    switch (regnum) {
    case UNW_ARM_R0:
        return PERF_REG_ARM_R0;
    case UNW_ARM_R1:
        return PERF_REG_ARM_R1;
    case UNW_ARM_R2:
        return PERF_REG_ARM_R2;
    case UNW_ARM_R3:
        return PERF_REG_ARM_R3;
    case UNW_ARM_R4:
        return PERF_REG_ARM_R4;
    case UNW_ARM_R5:
        return PERF_REG_ARM_R5;
    case UNW_ARM_R6:
        return PERF_REG_ARM_R6;
    case UNW_ARM_R7:
        return PERF_REG_ARM_R7;
    case UNW_ARM_R8:
        return PERF_REG_ARM_R8;
    case UNW_ARM_R9:
        return PERF_REG_ARM_R9;
    case UNW_ARM_R10:
        return PERF_REG_ARM_R10;
    case UNW_ARM_R11:
        return PERF_REG_ARM_FP;
    case UNW_ARM_R12:
        return PERF_REG_ARM_IP;
    case UNW_ARM_R13:
        return PERF_REG_ARM_SP;
    case UNW_ARM_R14:
        return PERF_REG_ARM_LR;
    case UNW_ARM_R15:
        return PERF_REG_ARM_PC;
    default:
        pr_err("unwind: invalid reg id %d\n", regnum);
        return -EINVAL;
    }

    return -EINVAL;
}