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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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87116ae6da
Currently REACHABLE is weird for being on the instruction after the instruction it modifies. Since all REACHABLE annotations have an explicit instruction, flip them around. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Josh Poimboeuf <jpoimboe@kernel.org> Link: https://lore.kernel.org/r/20241128094312.494176035@infradead.org
63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
/* 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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