Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi...

[linux-2.6-omap-h63xx.git] / include / asm-parisc / bug.h

diff --git a/include/asm-parisc/bug.h b/include/asm-parisc/bug.h
index 695588da41f8a73bb31d3fbeb7c686bf0fdfa751..8cfc553fc837267e2342cbf66f4ef27efacde143 100644 (file)
--- 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) ({                                          \
+       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
 
 #include <asm-generic/bug.h>
 #endif
+