1 #ifndef __ASM_SH_BUG_H 2 #define __ASM_SH_BUG_H 3 4 #define TRAPA_BUG_OPCODE 0xc33e /* trapa #0x3e */ 5 6 #ifdef CONFIG_GENERIC_BUG 7 #define HAVE_ARCH_BUG 8 #define HAVE_ARCH_WARN_ON 9 10 /** 11 * _EMIT_BUG_ENTRY 12 * %1 - __FILE__ 13 * %2 - __LINE__ 14 * %3 - trap type 15 * %4 - sizeof(struct bug_entry) 16 * 17 * The trapa opcode itself sits in %0. 18 * The %O notation is used to avoid # generation. 19 * 20 * The offending file and line are encoded in the __bug_table section. 21 */ 22 #ifdef CONFIG_DEBUG_BUGVERBOSE 23 #define _EMIT_BUG_ENTRY \ 24 "\t.pushsection __bug_table,\"a\"\n" \ 25 "2:\t.long 1b, %O1\n" \ 26 "\t.short %O2, %O3\n" \ 27 "\t.org 2b+%O4\n" \ 28 "\t.popsection\n" 29 #else 30 #define _EMIT_BUG_ENTRY \ 31 "\t.pushsection __bug_table,\"a\"\n" \ 32 "2:\t.long 1b\n" \ 33 "\t.short %O3\n" \ 34 "\t.org 2b+%O4\n" \ 35 "\t.popsection\n" 36 #endif 37 38 #define BUG() \ 39 do { \ 40 __asm__ __volatile__ ( \ 41 "1:\t.short %O0\n" \ 42 _EMIT_BUG_ENTRY \ 43 : \ 44 : "n" (TRAPA_BUG_OPCODE), \ 45 "i" (__FILE__), \ 46 "i" (__LINE__), "i" (0), \ 47 "i" (sizeof(struct bug_entry))); \ 48 } while (0) 49 50 #define __WARN() \ 51 do { \ 52 __asm__ __volatile__ ( \ 53 "1:\t.short %O0\n" \ 54 _EMIT_BUG_ENTRY \ 55 : \ 56 : "n" (TRAPA_BUG_OPCODE), \ 57 "i" (__FILE__), \ 58 "i" (__LINE__), \ 59 "i" (BUGFLAG_WARNING), \ 60 "i" (sizeof(struct bug_entry))); \ 61 } while (0) 62 63 #define WARN_ON(x) ({ \ 64 int __ret_warn_on = !!(x); \ 65 if (__builtin_constant_p(__ret_warn_on)) { \ 66 if (__ret_warn_on) \ 67 __WARN(); \ 68 } else { \ 69 if (unlikely(__ret_warn_on)) \ 70 __WARN(); \ 71 } \ 72 unlikely(__ret_warn_on); \ 73 }) 74 75 #endif /* CONFIG_GENERIC_BUG */ 76 77 #include <asm-generic/bug.h> 78 79 #endif /* __ASM_SH_BUG_H */ 80