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- #ifndef _ASMARM_BUG_H
- #define _ASMARM_BUG_H
- #ifdef CONFIG_BUG
- /*
- * Use a suitable undefined instruction to use for ARM/Thumb2 bug handling.
- * We need to be careful not to conflict with those used by other modules and
- * the register_undef_hook() system.
- */
- #ifdef CONFIG_THUMB2_KERNEL
- #define BUG_INSTR_VALUE 0xde02
- #define BUG_INSTR_TYPE ".hword "
- #else
- #define BUG_INSTR_VALUE 0xe7f001f2
- #define BUG_INSTR_TYPE ".word "
- #endif
- #define BUG() _BUG(__FILE__, __LINE__, BUG_INSTR_VALUE)
- #define _BUG(file, line, value) __BUG(file, line, value)
- #ifdef CONFIG_DEBUG_BUGVERBOSE
- /*
- * The extra indirection is to ensure that the __FILE__ string comes through
- * OK. Many version of gcc do not support the asm %c parameter which would be
- * preferable to this unpleasantness. We use mergeable string sections to
- * avoid multiple copies of the string appearing in the kernel image.
- */
- #define __BUG(__file, __line, __value) \
- do { \
- BUILD_BUG_ON(sizeof(struct bug_entry) != 12); \
- asm volatile("1:\t" BUG_INSTR_TYPE #__value "\n" \
- ".pushsection .rodata.str, \"aMS\", %progbits, 1\n" \
- "2:\t.asciz " #__file "\n" \
- ".popsection\n" \
- ".pushsection __bug_table,\"a\"\n" \
- "3:\t.word 1b, 2b\n" \
- "\t.hword " #__line ", 0\n" \
- ".popsection"); \
- unreachable(); \
- } while (0)
- #else /* not CONFIG_DEBUG_BUGVERBOSE */
- #define __BUG(__file, __line, __value) \
- do { \
- asm volatile(BUG_INSTR_TYPE #__value); \
- unreachable(); \
- } while (0)
- #endif /* CONFIG_DEBUG_BUGVERBOSE */
- #define HAVE_ARCH_BUG
- #endif /* CONFIG_BUG */
- #include <asm-generic/bug.h>
- #endif
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