Commit 82623097 authored by FUJITA Tomonori's avatar FUJITA Tomonori Committed by Miguel Ojeda
Browse files

arm64/bug: Add ARCH_WARN_ASM macro for BUG/WARN asm code sharing with Rust 



Add new ARCH_WARN_ASM macro for BUG/WARN assembly code sharing with
Rust to avoid the duplication.

No functional changes.

Acked-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: default avatarFUJITA Tomonori <fujita.tomonori@gmail.com>
Link: https://lore.kernel.org/r/20250502094537.231725-4-fujita.tomonori@gmail.com


Signed-off-by: default avatarMiguel Ojeda <ojeda@kernel.org>
parent 8ad470d4

arch/arm64/include/asm/asm-bug.h

+29 −4
Original line number Diff line number Diff line
@@ -21,16 +21,21 @@ 
#endif



#ifdef CONFIG_GENERIC_BUG



#define __BUG_ENTRY(flags) 				\

#define __BUG_ENTRY_START				\

		.pushsection __bug_table,"aw";		\

		.align 2;				\

	14470:	.long 14471f - .;			\

_BUGVERBOSE_LOCATION(__FILE__, __LINE__)		\

		.short flags; 				\



#define __BUG_ENTRY_END					\

		.align 2;				\

		.popsection;				\

	14471:



#define __BUG_ENTRY(flags)				\

		__BUG_ENTRY_START			\

_BUGVERBOSE_LOCATION(__FILE__, __LINE__)		\

		.short flags;				\

		__BUG_ENTRY_END

#else

#define __BUG_ENTRY(flags)

#endif
@@ -41,4 +46,24 @@ _BUGVERBOSE_LOCATION(__FILE__, __LINE__) \ 


#define ASM_BUG()	ASM_BUG_FLAGS(0)



#ifdef CONFIG_DEBUG_BUGVERBOSE

#define __BUG_LOCATION_STRING(file, line)		\

		".long " file "- .;"			\

		".short " line ";"

#else

#define __BUG_LOCATION_STRING(file, line)

#endif



#define __BUG_ENTRY_STRING(file, line, flags)		\

		__stringify(__BUG_ENTRY_START)		\

		__BUG_LOCATION_STRING(file, line)	\

		".short " flags ";"			\

		__stringify(__BUG_ENTRY_END)



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

	__BUG_ENTRY_STRING(file, line, flags)		\

	__stringify(brk BUG_BRK_IMM)



#define ARCH_WARN_REACHABLE



#endif /* __ASM_ASM_BUG_H */