patch-2.4.2 linux/arch/s390/lib/uaccess.S

• 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
+