[S390] Inline assembly cleanup.

Major cleanup of all s390 inline assemblies. They now have a common
coding style. Quite a few have been shortened, mainly by using register
asm variables. Use of the EX_TABLE macro helps  as well. The atomic ops,
bit ops and locking inlines new use the Q-constraint if a newer gcc
is used.  That results in slightly better code.

Thanks to Christian Borntraeger for proof reading the changes.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 7 insertions, 16 deletions

diff --git a/arch/s390/hypfs/hypfs_diag.c b/arch/s390/hypfs/hypfs_diag.c
index 684384f2b364..443fa377d9ff 100644
--- a/arch/s390/hypfs/hypfs_diag.c
+++ b/arch/s390/hypfs/hypfs_diag.c
@@ -333,22 +333,14 @@ static int diag204(unsigned long subcode, unsigned long size, void *addr)
         register unsigned long _subcode asm("0") = subcode;
         register unsigned long _size asm("1") = size;
 
-        asm volatile ("   diag    %2,%0,0x204\n"
-                      "0: \n" ".section __ex_table,\"a\"\n"
-#ifndef __s390x__
-                      "    .align 4\n"
-                      "    .long  0b,0b\n"
-#else
-                      "    .align 8\n"
-                      "    .quad  0b,0b\n"
-#endif
-                      ".previous":"+d" (_subcode), "+d"(_size)
-                      :"d"(addr)
-                      :"memory");
+        asm volatile(
+                "       diag    %2,%0,0x204\n"
+                "0:\n"
+                EX_TABLE(0b,0b)
+                : "+d" (_subcode), "+d" (_size) : "d" (addr) : "memory");
         if (_subcode)
                 return -1;
-        else
-                return _size;
+        return _size;
 }
 
 /*
@@ -491,8 +483,7 @@ out:
 
 static void diag224(void *ptr)
 {
-        asm volatile("   diag    %0,%1,0x224\n"
-                     : :"d" (0), "d"(ptr) : "memory");
+        asm volatile("diag %0,%1,0x224" : :"d" (0), "d"(ptr) : "memory");
 }
 
 static int diag224_get_name_table(void)