patch-2.4.18 linux/include/asm-s390x/uaccess.h

• Lines: 122
• Date: Fri Dec 21 16:25:31 2001
• Orig file: linux.orig/include/asm-s390x/uaccess.h
• Orig date: Mon Feb 18 20:18:40 2002

diff -Naur -X /home/marcelo/lib/dontdiff linux.orig/include/asm-s390x/uaccess.h linux/include/asm-s390x/uaccess.h
@@ -336,34 +336,11 @@
  * access register are set up, that 4 points to secondary (user) , 2 to primary (kernel)
  */
 
-asmlinkage void __copy_from_user_fixup(void /* special calling convention */);
-asmlinkage void __copy_to_user_fixup(void /* special calling convention */);
-
-extern inline unsigned long
-__copy_to_user_asm(void* to, const void* from,  long n)
-{
-
-        __asm__ __volatile__ (  "   lgr   2,%2\n"
-                                "   lgr   4,%1\n"
-                                "   lgr   3,%0\n"
-                                "   lgr   5,3\n"
-                                "   sacf  512\n"
-                                "0: mvcle 4,2,0\n"
-                                "   jo    0b\n"
-                                "   sacf  0\n"
-                                "   lgr   %0,3\n"
-				".section __ex_table,\"a\"\n"
-				"   .align 8\n"
-				"   .quad  0b,__copy_to_user_fixup\n"
-				".previous"
-                                : "+&d" (n) : "d" (to), "d" (from)
-                                : "cc", "1", "2", "3", "4", "5" );
-        return n;
-}
+extern long __copy_to_user_asm(const void *from, long n, void *to);
 
 #define __copy_to_user(to, from, n)                             \
 ({                                                              \
-        __copy_to_user_asm(to,from,n);                          \
+        __copy_to_user_asm(from, n, to);                        \
 })
 
 #define copy_to_user(to, from, n)                               \
@@ -371,38 +348,18 @@
         long err = 0;                                           \
         __typeof__(n) __n = (n);                                \
         if (__access_ok(to,__n)) {                              \
-                err = __copy_to_user_asm(to,from,__n);          \
+                err = __copy_to_user_asm(from, __n, to);        \
         }                                                       \
         else                                                    \
                 err = __n;                                      \
         err;                                                    \
 })
 
-extern inline unsigned long
-__copy_from_user_asm(void* to, const void* from,  long n)
-{
-        __asm__ __volatile__ (  "   lgr   2,%1\n"
-                                "   lgr   4,%2\n"
-                                "   lgr   3,%0\n"
-                                "   lgr   5,3\n"
-                                "   sacf  512\n"
-                                "0: mvcle 2,4,0\n"
-                                "   jo    0b\n"
-                                "   sacf  0\n"
-                                "   lgr   %0,5\n"
-				".section __ex_table,\"a\"\n"
-				"   .align 8\n"
-				"   .quad  0b,__copy_from_user_fixup\n"
-				".previous"
-                                : "+&d" (n) : "d" (to), "d" (from)
-                                : "cc", "1", "2", "3", "4", "5" );
-        return n;
-}
-
+extern long __copy_from_user_asm(void *to, long n, const void *from);
 
 #define __copy_from_user(to, from, n)                           \
 ({                                                              \
-        __copy_from_user_asm(to,from,n);                        \
+        __copy_from_user_asm(to, n, from);                      \
 })
 
 #define copy_from_user(to, from, n)                             \
@@ -410,7 +367,7 @@
         long err = 0;                                           \
         __typeof__(n) __n = (n);                                \
         if (__access_ok(from,__n)) {                            \
-                err = __copy_from_user_asm(to,from,__n);        \
+                err = __copy_from_user_asm(to, __n, from);      \
         }                                                       \
         else                                                    \
                 err = __n;                                      \
@@ -520,27 +477,12 @@
  * Zero Userspace
  */
 
-static inline unsigned long
-__clear_user(void *to, unsigned long n)
-{
-        __asm__ __volatile__ (  "   sacf  512\n"
-                                "   lgr   4,%1\n"
-                                "   lgr   5,%0\n"
-                                "   sgr   2,2\n"
-                                "   sgr   3,3\n"
-                                "0: mvcle 4,2,0\n"
-                                "   jo    0b\n"
-                                "1: sacf  0\n"
-                                "   lgr   %0,5\n"
-				".section __ex_table,\"a\"\n"
-				"   .align 8\n"
-				"   .quad  0b,__copy_to_user_fixup\n"
-				".previous"
-                                : "+&a" (n)
-                                : "a"   (to)
-                                : "cc", "1", "2", "3", "4", "5" );
-        return n;
-}
+extern long __clear_user_asm(void *to, long n);
+
+#define __clear_user(to, n)                                     \
+({                                                              \
+        __clear_user_asm(to, n);                                \
+})
 
 static inline unsigned long
 clear_user(void *to, unsigned long n)