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826230970a
Add new ARCH_WARN_ASM macro for BUG/WARN assembly code sharing with Rust to avoid the duplication. No functional changes. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com> Link: https://lore.kernel.org/r/20250502094537.231725-4-fujita.tomonori@gmail.com Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
/* 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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