alpha: add asm/extable.h

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

arch/alpha/include/asm/extable.h

+#ifndef _ASM_EXTABLE_H
+#define _ASM_EXTABLE_H
+
+/*
+ * About the exception table:
+ *
+ * - insn is a 32-bit pc-relative offset from the faulting insn.
+ * - nextinsn is a 16-bit offset off of the faulting instruction
+ *   (not off of the *next* instruction as branches are).
+ * - errreg is the register in which to place -EFAULT.
+ * - valreg is the final target register for the load sequence
+ *   and will be zeroed.
+ *
+ * Either errreg or valreg may be $31, in which case nothing happens.
+ *
+ * The exception fixup information "just so happens" to be arranged
+ * as in a MEM format instruction.  This lets us emit our three
+ * values like so:
+ *
+ *      lda valreg, nextinsn(errreg)
+ *
+ */
+
+struct exception_table_entry
+{
+	signed int insn;
+	union exception_fixup {
+		unsigned unit;
+		struct {
+			signed int nextinsn : 16;
+			unsigned int errreg : 5;
+			unsigned int valreg : 5;
+		} bits;
+	} fixup;
+};
+
+/* Returns the new pc */
+#define fixup_exception(map_reg, _fixup, pc)			\
+({								\
+	if ((_fixup)->fixup.bits.valreg != 31)			\
+		map_reg((_fixup)->fixup.bits.valreg) = 0;	\
+	if ((_fixup)->fixup.bits.errreg != 31)			\
+		map_reg((_fixup)->fixup.bits.errreg) = -EFAULT;	\
+	(pc) + (_fixup)->fixup.bits.nextinsn;			\
+})
+
+#define ARCH_HAS_RELATIVE_EXTABLE
+
+#define swap_ex_entry_fixup(a, b, tmp, delta)			\
+	do {							\
+		(a)->fixup.unit = (b)->fixup.unit;		\
+		(b)->fixup.unit = (tmp).fixup.unit;		\
+	} while (0)
+
+#endif

arch/alpha/include/asm/uaccess.h

@@ -386,56 +386,6 @@ extern long strncpy_from_user(char *dest, const char __user *src, long count);
 extern __must_check long strlen_user(const char __user *str);
 extern __must_check long strnlen_user(const char __user *str, long n);
 
-/*
- * About the exception table:
- *
- * - insn is a 32-bit pc-relative offset from the faulting insn.
- * - nextinsn is a 16-bit offset off of the faulting instruction
- *   (not off of the *next* instruction as branches are).
- * - errreg is the register in which to place -EFAULT.
- * - valreg is the final target register for the load sequence
- *   and will be zeroed.
- *
- * Either errreg or valreg may be $31, in which case nothing happens.
- *
- * The exception fixup information "just so happens" to be arranged
- * as in a MEM format instruction.  This lets us emit our three
- * values like so:
- *
- *      lda valreg, nextinsn(errreg)
- *
- */
-
-struct exception_table_entry
-{
-	signed int insn;
-	union exception_fixup {
-		unsigned unit;
-		struct {
-			signed int nextinsn : 16;
-			unsigned int errreg : 5;
-			unsigned int valreg : 5;
-		} bits;
-	} fixup;
-};
-
-/* Returns the new pc */
-#define fixup_exception(map_reg, _fixup, pc)			\
-({								\
-	if ((_fixup)->fixup.bits.valreg != 31)			\
-		map_reg((_fixup)->fixup.bits.valreg) = 0;	\
-	if ((_fixup)->fixup.bits.errreg != 31)			\
-		map_reg((_fixup)->fixup.bits.errreg) = -EFAULT;	\
-	(pc) + (_fixup)->fixup.bits.nextinsn;			\
-})
-
-#define ARCH_HAS_RELATIVE_EXTABLE
-
-#define swap_ex_entry_fixup(a, b, tmp, delta)			\
-	do {							\
-		(a)->fixup.unit = (b)->fixup.unit;		\
-		(b)->fixup.unit = (tmp).fixup.unit;		\
-	} while (0)
-
+#include <asm/extable.h>
 
 #endif /* __ALPHA_UACCESS_H */