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authorHaavard Skinnemoen <hskinnemoen@atmel.com>2007-03-13 17:59:11 +0100
committerHaavard Skinnemoen <hskinnemoen@atmel.com>2007-04-27 13:44:13 +0200
commit623b0355d5b1f9c6d05005b649a2f3a7b9fd7816 (patch)
tree43ef35d4f6e83a49c1fb72df4b538271b650c054 /include/asm-avr32/bug.h
parent3b328c98093702c584692bffabd440800b383d73 (diff)
[AVR32] Clean up exception handling code
* Use generic BUG() handling * Remove some useless debug statements * Use a common function _exception() to send signals or oops when an exception can't be handled. This makes sure init doesn't enter an infinite exception loop as well. Borrowed from powerpc. * Add some basic exception tracing support to the page fault code. * Rework dump_stack(), show_regs() and friends and move everything into process.c * Print information about configuration options and chip type when oopsing Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Diffstat (limited to 'include/asm-avr32/bug.h')
-rw-r--r--include/asm-avr32/bug.h50
1 files changed, 38 insertions, 12 deletions
diff --git a/include/asm-avr32/bug.h b/include/asm-avr32/bug.h
index 521766bc9366..afdcd79a2966 100644
--- a/include/asm-avr32/bug.h
+++ b/include/asm-avr32/bug.h
@@ -18,27 +18,53 @@
#ifdef CONFIG_DEBUG_BUGVERBOSE
-#define BUG() \
- do { \
- asm volatile(".hword %0\n\t" \
- ".hword %1\n\t" \
- ".long %2" \
- : \
- : "n"(AVR32_BUG_OPCODE), \
- "i"(__LINE__), "X"(__FILE__)); \
- } while (0)
+#define _BUG_OR_WARN(flags) \
+ asm volatile( \
+ "1: .hword %0\n" \
+ " .section __bug_table,\"a\",@progbits\n" \
+ "2: .long 1b\n" \
+ " .long %1\n" \
+ " .short %2\n" \
+ " .short %3\n" \
+ " .org 2b + %4\n" \
+ " .previous" \
+ : \
+ : "i"(AVR32_BUG_OPCODE), "i"(__FILE__), \
+ "i"(__LINE__), "i"(flags), \
+ "i"(sizeof(struct bug_entry)))
#else
+#define _BUG_OR_WARN(flags) \
+ asm volatile( \
+ "1: .hword %0\n" \
+ " .section __bug_table,\"a\",@progbits\n" \
+ "2: .long 1b\n" \
+ " .short %1\n" \
+ " .org 2b + %2\n" \
+ " .previous" \
+ : \
+ : "i"(AVR32_BUG_OPCODE), "i"(flags), \
+ "i"(sizeof(struct bug_entry)))
+
+#endif /* CONFIG_DEBUG_BUGVERBOSE */
+
#define BUG() \
do { \
- asm volatile(".hword %0\n\t" \
- : : "n"(AVR32_BUG_OPCODE)); \
+ _BUG_OR_WARN(0); \
+ for (;;); \
} while (0)
-#endif /* CONFIG_DEBUG_BUGVERBOSE */
+#define WARN_ON(condition) \
+ ({ \
+ typeof(condition) __ret_warn_on = (condition); \
+ if (unlikely(__ret_warn_on)) \
+ _BUG_OR_WARN(BUGFLAG_WARNING); \
+ unlikely(__ret_warn_on); \
+ })
#define HAVE_ARCH_BUG
+#define HAVE_ARCH_WARN_ON
#endif /* CONFIG_BUG */