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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/tools/perf/arch/arm/util/unwind-libunwind.c
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// SPDX-License-Identifier: GPL-2.0

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#include <errno.h>

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#include <libunwind.h>

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#include "perf_regs.h"

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#include "../../../util/unwind.h"

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#include "../../../util/debug.h"

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int libunwind__arch_reg_id(int regnum)

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{

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	switch (regnum) {

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	case UNW_ARM_R0:

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		return PERF_REG_ARM_R0;

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	case UNW_ARM_R1:

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		return PERF_REG_ARM_R1;

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	case UNW_ARM_R2:

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		return PERF_REG_ARM_R2;

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	case UNW_ARM_R3:

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		return PERF_REG_ARM_R3;

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	case UNW_ARM_R4:

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		return PERF_REG_ARM_R4;

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	case UNW_ARM_R5:

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		return PERF_REG_ARM_R5;

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	case UNW_ARM_R6:

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		return PERF_REG_ARM_R6;

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	case UNW_ARM_R7:

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		return PERF_REG_ARM_R7;

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	case UNW_ARM_R8:

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		return PERF_REG_ARM_R8;

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	case UNW_ARM_R9:

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		return PERF_REG_ARM_R9;

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	case UNW_ARM_R10:

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		return PERF_REG_ARM_R10;

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	case UNW_ARM_R11:

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		return PERF_REG_ARM_FP;

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	case UNW_ARM_R12:

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		return PERF_REG_ARM_IP;

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	case UNW_ARM_R13:

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		return PERF_REG_ARM_SP;

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	case UNW_ARM_R14:

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		return PERF_REG_ARM_LR;

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	case UNW_ARM_R15:

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		return PERF_REG_ARM_PC;

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	default:

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		pr_err("unwind: invalid reg id %d\n", regnum);

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		return -EINVAL;

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	}

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	return -EINVAL;

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}

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