[PARISC] Generic BUG
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
diff --git a/include/asm-parisc/bug.h b/include/asm-parisc/bug.h
index 695588d..8dd199f 100644
--- 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
+