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

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#ifndef __ASM_BUG_H

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#define __ASM_BUG_H

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#include <asm/break.h>

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#include <linux/stringify.h>

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#include <linux/objtool.h>

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#ifndef CONFIG_DEBUG_BUGVERBOSE

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#define _BUGVERBOSE_LOCATION(file, line)

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#else

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#define __BUGVERBOSE_LOCATION(file, line)			\

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

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	10002:	.string file;					\

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		.popsection;					\

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								\

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		.long 10002b - .;				\

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		.short line;

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

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#endif

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#ifndef CONFIG_GENERIC_BUG

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#define __BUG_ENTRY(flags)

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#else

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#define __BUG_ENTRY(flags) 					\

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		.pushsection __bug_table, "aw";			\

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		.align 2;					\

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	10000:	.long 10001f - .;				\

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		_BUGVERBOSE_LOCATION(__FILE__, __LINE__)	\

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		.short flags; 					\

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		.popsection;					\

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	10001:

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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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	break		BRK_BUG;

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#define ASM_BUG()	ASM_BUG_FLAGS(0)

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#define __BUG_FLAGS(flags, extra)					\

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	asm_inline volatile (__stringify(ASM_BUG_FLAGS(flags))		\

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			     extra);

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#define __WARN_FLAGS(flags)					\

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do {								\

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	instrumentation_begin();				\

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	__BUG_FLAGS(BUGFLAG_WARNING|(flags), ANNOTATE_REACHABLE(10001b));\

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	instrumentation_end();					\

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} while (0)

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#define BUG()							\

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do {								\

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	instrumentation_begin();				\

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	__BUG_FLAGS(0, "");					\

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	unreachable();						\

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} while (0)

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#define HAVE_ARCH_BUG

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#include <asm-generic/bug.h>

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#endif /* __ASM_BUG_H */

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