patch-2.4.2 linux/arch/s390/lib/uaccess.S
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- Lines: 52
- Date:
Tue Feb 13 14:13:44 2001
- Orig file:
v2.4.1/linux/arch/s390/lib/uaccess.S
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.4.1/linux/arch/s390/lib/uaccess.S linux/arch/s390/lib/uaccess.S
@@ -0,0 +1,51 @@
+/*
+ * arch/s390/lib/uaccess.S
+ * fixup routines for copy_{from|to}_user functions.
+ *
+ * s390
+ * Copyright (C) 2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ * Authors(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
+ *
+ * These functions have a non-standard call interface
+ */
+
+#include <asm/lowcore.h>
+
+ .text
+ .align 4
+ .globl __copy_from_user_fixup
+__copy_from_user_fixup:
+ l 1,__LC_PGM_OLD_PSW+4
+ sll 4,1
+ srl 4,1
+0: lhi 3,-4096
+ sll 3,1
+ srl 3,1
+ n 3,__LC_TRANS_EXC_ADDR
+ sr 3,4
+ bm 4(1)
+1: mvcle 2,4,0
+ b 4(1)
+ .section __ex_table,"a"
+ .long 1b,0b
+ .previous
+
+ .align 4
+ .text
+ .globl __copy_to_user_fixup
+__copy_to_user_fixup:
+ l 1,__LC_PGM_OLD_PSW+4
+ sll 4,1
+ srl 4,1
+0: lhi 5,-4096
+ sll 5,1
+ srl 5,1
+ n 5,__LC_TRANS_EXC_ADDR
+ sr 5,4
+ bm 4(1)
+1: mvcle 4,2,0
+ b 4(1)
+ .section __ex_table,"a"
+ .long 1b,0b
+ .previous
+
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