diff options
Diffstat (limited to 'include/asm-parisc/bug.h')
| -rw-r--r-- | include/asm-parisc/bug.h | 88 |
1 files changed, 83 insertions, 5 deletions
diff --git a/include/asm-parisc/bug.h b/include/asm-parisc/bug.h index 695588da41f..83ba510ed5d 100644 --- a/include/asm-parisc/bug.h +++ b/include/asm-parisc/bug.h @@ -1,14 +1,92 @@ #ifndef _PARISC_BUG_H #define _PARISC_BUG_H +/* + * Tell the user there is some problem. + * The offending file and line are encoded in the __bug_table section. + */ + #ifdef CONFIG_BUG #define HAVE_ARCH_BUG -#define BUG() do { \ - printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); \ - dump_stack(); \ - panic("BUG!"); \ -} while (0) +#define HAVE_ARCH_WARN_ON + +/* the break instruction is used as BUG() marker. */ +#define PARISC_BUG_BREAK_ASM "break 0x1f, 0x1fff" +#define PARISC_BUG_BREAK_INSN 0x03ffe01f /* PARISC_BUG_BREAK_ASM */ + +#if defined(CONFIG_64BIT) +#define ASM_WORD_INSN ".dword\t" +#else +#define ASM_WORD_INSN ".word\t" +#endif + +#ifdef CONFIG_DEBUG_BUGVERBOSE +#define BUG() \ + do { \ + asm volatile("\n" \ + "1:\t" PARISC_BUG_BREAK_ASM "\n" \ + "\t.pushsection __bug_table,\"a\"\n" \ + "2:\t" ASM_WORD_INSN "1b, %c0\n" \ + "\t.short %c1, %c2\n" \ + "\t.org 2b+%c3\n" \ + "\t.popsection" \ + : : "i" (__FILE__), "i" (__LINE__), \ + "i" (0), "i" (sizeof(struct bug_entry)) ); \ + for(;;) ; \ + } while(0) + +#else +#define BUG() \ + do { \ + asm volatile(PARISC_BUG_BREAK_ASM : : ); \ + for(;;) ; \ + } while(0) +#endif + +#ifdef CONFIG_DEBUG_BUGVERBOSE +#define __WARN() \ + do { \ + asm volatile("\n" \ + "1:\t" PARISC_BUG_BREAK_ASM "\n" \ + "\t.pushsection __bug_table,\"a\"\n" \ + "2:\t" ASM_WORD_INSN "1b, %c0\n" \ + "\t.short %c1, %c2\n" \ + "\t.org 2b+%c3\n" \ + "\t.popsection" \ + : : "i" (__FILE__), "i" (__LINE__), \ + "i" (BUGFLAG_WARNING), \ + "i" (sizeof(struct bug_entry)) ); \ + } while(0) +#else +#define __WARN() \ + do { \ + asm volatile("\n" \ + "1:\t" PARISC_BUG_BREAK_ASM "\n" \ + "\t.pushsection __bug_table,\"a\"\n" \ + "2:\t" ASM_WORD_INSN "1b\n" \ + "\t.short %c0\n" \ + "\t.org 2b+%c1\n" \ + "\t.popsection" \ + : : "i" (BUGFLAG_WARNING), \ + "i" (sizeof(struct bug_entry)) ); \ + } while(0) +#endif + + +#define WARN_ON(x) ({ \ + typeof(x) __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 #include <asm-generic/bug.h> #endif + |