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authorBecky Bruce <bgill@freescale.com>2005-09-19 17:01:54 -0500
committerPaul Mackerras <paulus@samba.org>2005-09-21 19:21:09 +1000
commit25433b123ce1a3da78ddd9b848484bca91cbb7a1 (patch)
tree259ee758b3770894160dd8a732fddd4067ea8699 /include/asm-powerpc/bug.h
parent3e57615bb5a8b6208627049884ee441f6d05905e (diff)
[PATCH] powerpc: Merge bug.h
ppc32/ppc64: Merge bug.h into include/asm-powerpc This patch merges bug.h into include/asm-powerpc. Changed the data structure for bug_entry such that line is always an int on both 32 and 64-bit platforms; removed casts to int from the 64-bit trap code to reflect this. Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Becky Bruce <Becky.Bruce@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/bug.h')
-rw-r--r--include/asm-powerpc/bug.h81
1 files changed, 81 insertions, 0 deletions
diff --git a/include/asm-powerpc/bug.h b/include/asm-powerpc/bug.h
new file mode 100644
index 000000000000..e4d028e87020
--- /dev/null
+++ b/include/asm-powerpc/bug.h
@@ -0,0 +1,81 @@
+#ifndef _ASM_POWERPC_BUG_H
+#define _ASM_POWERPC_BUG_H
+
+/*
+ * Define an illegal instr to trap on the bug.
+ * We don't use 0 because that marks the end of a function
+ * in the ELF ABI. That's "Boo Boo" in case you wonder...
+ */
+#define BUG_OPCODE .long 0x00b00b00 /* For asm */
+#define BUG_ILLEGAL_INSTR "0x00b00b00" /* For BUG macro */
+
+#ifndef __ASSEMBLY__
+
+#ifdef __powerpc64__
+#define BUG_TABLE_ENTRY(label, line, file, func) \
+ ".llong " #label "\n .long " #line "\n .llong " #file ", " #func "\n"
+#define TRAP_OP(ra, rb) "1: tdnei " #ra ", " #rb "\n"
+#define DATA_TYPE long long
+#else
+#define BUG_TABLE_ENTRY(label, line, file, func) \
+ ".long " #label ", " #line ", " #file ", " #func "\n"
+#define TRAP_OP(ra, rb) "1: twnei " #ra ", " #rb "\n"
+#define DATA_TYPE int
+#endif /* __powerpc64__ */
+
+struct bug_entry {
+ unsigned long bug_addr;
+ int line;
+ const char *file;
+ const char *function;
+};
+
+struct bug_entry *find_bug(unsigned long bugaddr);
+
+/*
+ * If this bit is set in the line number it means that the trap
+ * is for WARN_ON rather than BUG or BUG_ON.
+ */
+#define BUG_WARNING_TRAP 0x1000000
+
+#ifdef CONFIG_BUG
+
+#define BUG() do { \
+ __asm__ __volatile__( \
+ "1: twi 31,0,0\n" \
+ ".section __bug_table,\"a\"\n\t" \
+ BUG_TABLE_ENTRY(1b,%0,%1,%2) \
+ ".previous" \
+ : : "i" (__LINE__), "i" (__FILE__), "i" (__FUNCTION__)); \
+} while (0)
+
+#define BUG_ON(x) do { \
+ __asm__ __volatile__( \
+ TRAP_OP(%0,0) \
+ ".section __bug_table,\"a\"\n\t" \
+ BUG_TABLE_ENTRY(1b,%1,%2,%3) \
+ ".previous" \
+ : : "r" ((DATA_TYPE)(x)), "i" (__LINE__), \
+ "i" (__FILE__), "i" (__FUNCTION__)); \
+} while (0)
+
+#define WARN_ON(x) do { \
+ __asm__ __volatile__( \
+ TRAP_OP(%0,0) \
+ ".section __bug_table,\"a\"\n\t" \
+ BUG_TABLE_ENTRY(1b,%1,%2,%3) \
+ ".previous" \
+ : : "r" ((DATA_TYPE)(x)), \
+ "i" (__LINE__ + BUG_WARNING_TRAP), \
+ "i" (__FILE__), "i" (__FUNCTION__)); \
+} while (0)
+
+#define HAVE_ARCH_BUG
+#define HAVE_ARCH_BUG_ON
+#define HAVE_ARCH_WARN_ON
+#endif /* CONFIG_BUG */
+#endif /* __ASSEMBLY __ */
+
+#include <asm-generic/bug.h>
+
+#endif /* _ASM_POWERPC_BUG_H */