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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/tools/perf/arch/x86/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 "../../util/debug.h"

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#ifndef REMOTE_UNWIND_LIBUNWIND

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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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#endif

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#ifdef HAVE_ARCH_X86_64_SUPPORT

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int LIBUNWIND__ARCH_REG_ID(int regnum)

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{

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	int id;

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	switch (regnum) {

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	case UNW_X86_64_RAX:

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		id = PERF_REG_X86_AX;

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		break;

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	case UNW_X86_64_RDX:

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		id = PERF_REG_X86_DX;

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		break;

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	case UNW_X86_64_RCX:

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		id = PERF_REG_X86_CX;

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		break;

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	case UNW_X86_64_RBX:

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		id = PERF_REG_X86_BX;

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		break;

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	case UNW_X86_64_RSI:

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		id = PERF_REG_X86_SI;

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		break;

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	case UNW_X86_64_RDI:

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		id = PERF_REG_X86_DI;

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		break;

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	case UNW_X86_64_RBP:

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		id = PERF_REG_X86_BP;

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		break;

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	case UNW_X86_64_RSP:

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		id = PERF_REG_X86_SP;

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		break;

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	case UNW_X86_64_R8:

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		id = PERF_REG_X86_R8;

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		break;

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	case UNW_X86_64_R9:

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		id = PERF_REG_X86_R9;

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		break;

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	case UNW_X86_64_R10:

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		id = PERF_REG_X86_R10;

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		break;

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	case UNW_X86_64_R11:

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		id = PERF_REG_X86_R11;

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		break;

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	case UNW_X86_64_R12:

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		id = PERF_REG_X86_R12;

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		break;

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	case UNW_X86_64_R13:

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		id = PERF_REG_X86_R13;

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		break;

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	case UNW_X86_64_R14:

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		id = PERF_REG_X86_R14;

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		break;

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	case UNW_X86_64_R15:

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		id = PERF_REG_X86_R15;

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		break;

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	case UNW_X86_64_RIP:

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		id = PERF_REG_X86_IP;

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		break;

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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 id;

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}

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#else

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int LIBUNWIND__ARCH_REG_ID(int regnum)

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{

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	int id;

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	switch (regnum) {

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	case UNW_X86_EAX:

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		id = PERF_REG_X86_AX;

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		break;

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	case UNW_X86_EDX:

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		id = PERF_REG_X86_DX;

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		break;

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	case UNW_X86_ECX:

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		id = PERF_REG_X86_CX;

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		break;

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	case UNW_X86_EBX:

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		id = PERF_REG_X86_BX;

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		break;

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	case UNW_X86_ESI:

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		id = PERF_REG_X86_SI;

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		break;

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	case UNW_X86_EDI:

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		id = PERF_REG_X86_DI;

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		break;

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	case UNW_X86_EBP:

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		id = PERF_REG_X86_BP;

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		break;

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	case UNW_X86_ESP:

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		id = PERF_REG_X86_SP;

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		break;

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	case UNW_X86_EIP:

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		id = PERF_REG_X86_IP;

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		break;

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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 id;

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}

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#endif /* HAVE_ARCH_X86_64_SUPPORT */

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