s390/uaccess: get rid of register asm

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

diff --git a/arch/s390/include/asm/uaccess.h b/arch/s390/include/asm/uaccess.h
index 4756d2937e5445b8ef8cd1d57e989a36efef98a8..2316f2440881ae814028382cd675962818d2ebfe 100644 (file)
--- a/arch/s390/include/asm/uaccess.h
+++ b/arch/s390/include/asm/uaccess.h
@@ -49,52 +49,51 @@ int __get_user_bad(void) __attribute__((noreturn));
 
 #ifdef CONFIG_HAVE_MARCH_Z10_FEATURES
 
-#define __put_get_user_asm(to, from, size, spec)               \
+#define __put_get_user_asm(to, from, size, insn)               \
 ({                                                             \
-       register unsigned long __reg0 asm("0") = spec;          \
        int __rc;                                               \
                                                                \
        asm volatile(                                           \
-               "0:     mvcos   %1,%3,%2\n"                     \
-               "1:     xr      %0,%0\n"                        \
+               insn "          0,%[spec]\n"                    \
+               "0:     mvcos   %[_to],%[_from],%[_size]\n"     \
+               "1:     xr      %[rc],%[rc]\n"                  \
                "2:\n"                                          \
                ".pushsection .fixup, \"ax\"\n"                 \
-               "3:     lhi     %0,%5\n"                        \
+               "3:     lhi     %[rc],%[retval]\n"              \
                "       jg      2b\n"                           \
                ".popsection\n"                                 \
                EX_TABLE(0b,3b) EX_TABLE(1b,3b)                 \
-               : "=d" (__rc), "+Q" (*(to))                     \
-               : "d" (size), "Q" (*(from)),                    \
-                 "d" (__reg0), "K" (-EFAULT)                   \
-               : "cc");                                        \
+               : [rc] "=&d" (__rc), [_to] "+Q" (*(to))         \
+               : [_size] "d" (size), [_from] "Q" (*(from)),    \
+                 [retval] "K" (-EFAULT), [spec] "K" (0x81UL)   \
+               : "cc", "0");                                   \
        __rc;                                                   \
 })
 
 static __always_inline int __put_user_fn(void *x, void __user *ptr, unsigned long size)
 {
-       unsigned long spec = 0x810000UL;
        int rc;
 
        switch (size) {
        case 1:
                rc = __put_get_user_asm((unsigned char __user *)ptr,
                                        (unsigned char *)x,
-                                       size, spec);
+                                       size, "llilh");
                break;
        case 2:
                rc = __put_get_user_asm((unsigned short __user *)ptr,
                                        (unsigned short *)x,
-                                       size, spec);
+                                       size, "llilh");
                break;
        case 4:
                rc = __put_get_user_asm((unsigned int __user *)ptr,
                                        (unsigned int *)x,
-                                       size, spec);
+                                       size, "llilh");
                break;
        case 8:
                rc = __put_get_user_asm((unsigned long __user *)ptr,
                                        (unsigned long *)x,
-                                       size, spec);
+                                       size, "llilh");
                break;
        default:
                __put_user_bad();
@@ -105,29 +104,28 @@ static __always_inline int __put_user_fn(void *x, void __user *ptr, unsigned lon
 
 static __always_inline int __get_user_fn(void *x, const void __user *ptr, unsigned long size)
 {
-       unsigned long spec = 0x81UL;
        int rc;
 
        switch (size) {
        case 1:
                rc = __put_get_user_asm((unsigned char *)x,
                                        (unsigned char __user *)ptr,
-                                       size, spec);
+                                       size, "lghi");
                break;
        case 2:
                rc = __put_get_user_asm((unsigned short *)x,
                                        (unsigned short __user *)ptr,
-                                       size, spec);
+                                       size, "lghi");
                break;
        case 4:
                rc = __put_get_user_asm((unsigned int *)x,
                                        (unsigned int __user *)ptr,
-                                       size, spec);
+                                       size, "lghi");
                break;
        case 8:
                rc = __put_get_user_asm((unsigned long *)x,
                                        (unsigned long __user *)ptr,
-                                       size, spec);
+                                       size, "lghi");
                break;
        default:
                __get_user_bad();