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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/arm64/include/asm/asm-bug.h
26481 views
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/* SPDX-License-Identifier: GPL-2.0-only */

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#ifndef __ASM_ASM_BUG_H

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/*

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 * Copyright (C) 2017  ARM Limited

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 */

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#define __ASM_ASM_BUG_H

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#include <asm/brk-imm.h>

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#ifdef CONFIG_DEBUG_BUGVERBOSE

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#define _BUGVERBOSE_LOCATION(file, line) __BUGVERBOSE_LOCATION(file, line)

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#define __BUGVERBOSE_LOCATION(file, line)			\

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		.pushsection .rodata.str,"aMS",@progbits,1;	\

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	14472:	.string file;					\

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		.popsection;					\

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								\

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		.long 14472b - .;				\

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		.short line;

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#else

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#define _BUGVERBOSE_LOCATION(file, line)

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#endif

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#ifdef CONFIG_GENERIC_BUG

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#define __BUG_ENTRY_START				\

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		.pushsection __bug_table,"aw";		\

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		.align 2;				\

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	14470:	.long 14471f - .;			\

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#define __BUG_ENTRY_END					\

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		.align 2;				\

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		.popsection;				\

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	14471:

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#define __BUG_ENTRY(flags)				\

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		__BUG_ENTRY_START			\

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_BUGVERBOSE_LOCATION(__FILE__, __LINE__)		\

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		.short flags;				\

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		__BUG_ENTRY_END

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#else

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#define __BUG_ENTRY(flags)

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#endif

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#define ASM_BUG_FLAGS(flags)				\

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	__BUG_ENTRY(flags)				\

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	brk	BUG_BRK_IMM

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#define ASM_BUG()	ASM_BUG_FLAGS(0)

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#ifdef CONFIG_DEBUG_BUGVERBOSE

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#define __BUG_LOCATION_STRING(file, line)		\

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		".long " file "- .;"			\

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		".short " line ";"

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#else

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#define __BUG_LOCATION_STRING(file, line)

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#endif

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#define __BUG_ENTRY_STRING(file, line, flags)		\

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		__stringify(__BUG_ENTRY_START)		\

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		__BUG_LOCATION_STRING(file, line)	\

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		".short " flags ";"			\

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		__stringify(__BUG_ENTRY_END)

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#define ARCH_WARN_ASM(file, line, flags, size)		\

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	__BUG_ENTRY_STRING(file, line, flags)		\

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	__stringify(brk BUG_BRK_IMM)

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#define ARCH_WARN_REACHABLE

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#endif /* __ASM_ASM_BUG_H */

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