[S390] EX_TABLE macro.

Add EX_TABLE helper macro to simplify creation of inline assembly
exception table entries.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/include/asm-s390/processor.h b/include/asm-s390/processor.h
index 5b71d37317239b94c38eef11eae89a34048b79d6..a3a4e5fd30d70ffc51b685a756b01b69321a0b24 100644 (file)
--- a/include/asm-s390/processor.h
+++ b/include/asm-s390/processor.h
@@ -339,4 +339,21 @@ int unregister_idle_notifier(struct notifier_block *nb);
 
 #endif
 
+/*
+ * Helper macro for exception table entries
+ */
+#ifndef __s390x__
+#define EX_TABLE(_fault,_target)                       \
+       ".section __ex_table,\"a\"\n"                   \
+       "       .align 4\n"                             \
+       "       .long  " #_fault "," #_target "\n"      \
+       ".previous\n"
+#else
+#define EX_TABLE(_fault,_target)                       \
+       ".section __ex_table,\"a\"\n"                   \
+       "       .align 8\n"                             \
+       "       .quad  " #_fault "," #_target "\n"      \
+       ".previous\n"
+#endif
+
 #endif                                 /* __ASM_S390_PROCESSOR_H           */