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a5fc5eba4d
Use the new unreachable() macro instead of for(;;);. When allyesconfig is built with a GCC-4.5 snapshot on i686 the size of the text segment is reduced by 3987 bytes (from 6827019 to 6823032). Signed-off-by: David Daney <ddaney@caviumnetworks.com> Acked-by: "H. Peter Anvin" <hpa@zytor.com> CC: Thomas Gleixner <tglx@linutronix.de> CC: Ingo Molnar <mingo@redhat.com> CC: x86@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
40 lines
786 B
C
40 lines
786 B
C
#ifndef _ASM_X86_BUG_H
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#define _ASM_X86_BUG_H
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#ifdef CONFIG_BUG
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#define HAVE_ARCH_BUG
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#ifdef CONFIG_DEBUG_BUGVERBOSE
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#ifdef CONFIG_X86_32
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# define __BUG_C0 "2:\t.long 1b, %c0\n"
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#else
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# define __BUG_C0 "2:\t.long 1b - 2b, %c0 - 2b\n"
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#endif
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#define BUG() \
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do { \
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asm volatile("1:\tud2\n" \
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".pushsection __bug_table,\"a\"\n" \
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__BUG_C0 \
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"\t.word %c1, 0\n" \
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"\t.org 2b+%c2\n" \
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".popsection" \
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: : "i" (__FILE__), "i" (__LINE__), \
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"i" (sizeof(struct bug_entry))); \
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unreachable(); \
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} while (0)
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#else
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#define BUG() \
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do { \
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asm volatile("ud2"); \
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unreachable(); \
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} while (0)
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#endif
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#endif /* !CONFIG_BUG */
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#include <asm-generic/bug.h>
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#endif /* _ASM_X86_BUG_H */
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