[PARISC] Generic BUG

[sfrench/cifs-2.6.git] / include / asm-parisc / bug.h

diff --git a/include/asm-parisc/bug.h b/include/asm-parisc/bug.h
index 695588da41f8a73bb31d3fbeb7c686bf0fdfa751..8dd199f5d6d7909f180de08a858c3d895921c88a 100644 (file)
--- a/include/asm-parisc/bug.h
+++ b/include/asm-parisc/bug.h
@@ -1,14 +1,77 @@
 #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 */
+
+#ifdef CONFIG_64BIT
+#define ASM_ULONG_INSN         ".dword"
+#else
+#define ASM_ULONG_INSN         ".word"
+#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_ULONG_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
+
+#define __WARN()                                                       \
+       do {                                                            \
+               asm volatile("\n"                                       \
+                            "1:\t" PARISC_BUG_BREAK_ASM "\n"           \
+                            "\t.pushsection __bug_table,\"a\"\n"       \
+                            "2:\t" ASM_ULONG_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)
+
+
+#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
+