diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-08-11 13:40:56 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-08-11 13:40:56 +0200 |
| commit | 251a169c69d1ff07cee7a9bb9fc4faff6b1d2ac3 (patch) | |
| tree | 3c20c3e080f276848f2ad67aadab44a5d64bfda9 /arch/sh/include/asm/bug.h | |
| parent | 6679ce6e5f519096612b480d255d9ca97be0c2be (diff) | |
| parent | 796aadeb1b2db9b5d463946766c5bbfd7717158c (diff) | |
Merge branch 'linus' into sched/urgent
Diffstat (limited to 'arch/sh/include/asm/bug.h')
| -rw-r--r-- | arch/sh/include/asm/bug.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/arch/sh/include/asm/bug.h b/arch/sh/include/asm/bug.h new file mode 100644 index 00000000000..c0171804016 --- /dev/null +++ b/arch/sh/include/asm/bug.h @@ -0,0 +1,79 @@ +#ifndef __ASM_SH_BUG_H +#define __ASM_SH_BUG_H + +#define TRAPA_BUG_OPCODE 0xc33e /* trapa #0x3e */ + +#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() \ +do { \ + __asm__ __volatile__ ( \ + "1:\t.short %O0\n" \ + _EMIT_BUG_ENTRY \ + : \ + : "n" (TRAPA_BUG_OPCODE), \ + "i" (__FILE__), \ + "i" (__LINE__), \ + "i" (BUGFLAG_WARNING), \ + "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); \ +}) + +#endif /* CONFIG_GENERIC_BUG */ + +#include <asm-generic/bug.h> + +#endif /* __ASM_SH_BUG_H */ |