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- #ifndef __ASM_SH_BUG_H
- #define __ASM_SH_BUG_H
- #include <linux/linkage.h>
- #define TRAPA_BUG_OPCODE 0xc33e /* trapa #0x3e */
- #define BUGFLAG_UNWINDER (1 << 1)
- #ifdef CONFIG_GENERIC_BUG
- #define HAVE_ARCH_BUG
- #define HAVE_ARCH_WARN_ON
- /**
- * _EMIT_BUG_ENTRY
- * %1 - __FILE__
- * %2 - __LINE__
- * %3 - trap type
- * %4 - sizeof(struct bug_entry)
- *
- * The trapa opcode itself sits in %0.
- * The %O notation is used to avoid # generation.
- *
- * The offending file and line are encoded in the __bug_table section.
- */
- #ifdef CONFIG_DEBUG_BUGVERBOSE
- #define _EMIT_BUG_ENTRY \
- "\t.pushsection __bug_table,\"a\"\n" \
- "2:\t.long 1b, %O1\n" \
- "\t.short %O2, %O3\n" \
- "\t.org 2b+%O4\n" \
- "\t.popsection\n"
- #else
- #define _EMIT_BUG_ENTRY \
- "\t.pushsection __bug_table,\"a\"\n" \
- "2:\t.long 1b\n" \
- "\t.short %O3\n" \
- "\t.org 2b+%O4\n" \
- "\t.popsection\n"
- #endif
- #define BUG() \
- do { \
- __asm__ __volatile__ ( \
- "1:\t.short %O0\n" \
- _EMIT_BUG_ENTRY \
- : \
- : "n" (TRAPA_BUG_OPCODE), \
- "i" (__FILE__), \
- "i" (__LINE__), "i" (0), \
- "i" (sizeof(struct bug_entry))); \
- } while (0)
- #define __WARN_TAINT(taint) \
- do { \
- __asm__ __volatile__ ( \
- "1:\t.short %O0\n" \
- _EMIT_BUG_ENTRY \
- : \
- : "n" (TRAPA_BUG_OPCODE), \
- "i" (__FILE__), \
- "i" (__LINE__), \
- "i" (BUGFLAG_TAINT(taint)), \
- "i" (sizeof(struct bug_entry))); \
- } while (0)
- #define WARN_ON(x) ({ \
- int __ret_warn_on = !!(x); \
- if (__builtin_constant_p(__ret_warn_on)) { \
- if (__ret_warn_on) \
- __WARN(); \
- } else { \
- if (unlikely(__ret_warn_on)) \
- __WARN(); \
- } \
- unlikely(__ret_warn_on); \
- })
- #define UNWINDER_BUG() \
- do { \
- __asm__ __volatile__ ( \
- "1:\t.short %O0\n" \
- _EMIT_BUG_ENTRY \
- : \
- : "n" (TRAPA_BUG_OPCODE), \
- "i" (__FILE__), \
- "i" (__LINE__), \
- "i" (BUGFLAG_UNWINDER), \
- "i" (sizeof(struct bug_entry))); \
- } while (0)
- #define UNWINDER_BUG_ON(x) ({ \
- int __ret_unwinder_on = !!(x); \
- if (__builtin_constant_p(__ret_unwinder_on)) { \
- if (__ret_unwinder_on) \
- UNWINDER_BUG(); \
- } else { \
- if (unlikely(__ret_unwinder_on)) \
- UNWINDER_BUG(); \
- } \
- unlikely(__ret_unwinder_on); \
- })
- #else
- #define UNWINDER_BUG BUG
- #define UNWINDER_BUG_ON BUG_ON
- #endif /* CONFIG_GENERIC_BUG */
- #include <asm-generic/bug.h>
- struct pt_regs;
- /* arch/sh/kernel/traps.c */
- extern void die(const char *str, struct pt_regs *regs, long err) __attribute__ ((noreturn));
- extern void die_if_kernel(const char *str, struct pt_regs *regs, long err);
- extern void die_if_no_fixup(const char *str, struct pt_regs *regs, long err);
- #endif /* __ASM_SH_BUG_H */
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