summaryrefslogtreecommitdiffstats
path: root/include/asm-s390/io.h
diff options
context:
space:
mode:
authorMartin Schwidefsky <schwidefsky@de.ibm.com>2006-09-28 16:56:43 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2006-09-28 16:56:43 +0200
commit94c12cc7d196bab34aaa98d38521549fa1e5ef76 (patch)
tree8e0cec0ed44445d74a2cb5160303d6b4dfb1bc31 /include/asm-s390/io.h
parent25d83cbfaa44e1b9170c0941c3ef52ca39f54ccc (diff)
downloadop-kernel-dev-94c12cc7d196bab34aaa98d38521549fa1e5ef76.zip
op-kernel-dev-94c12cc7d196bab34aaa98d38521549fa1e5ef76.tar.gz
[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>
Diffstat (limited to 'include/asm-s390/io.h')
-rw-r--r--include/asm-s390/io.h14
1 files changed, 6 insertions, 8 deletions
diff --git a/include/asm-s390/io.h b/include/asm-s390/io.h
index a6cc27e..63c78b9 100644
--- a/include/asm-s390/io.h
+++ b/include/asm-s390/io.h
@@ -27,18 +27,16 @@
static inline unsigned long virt_to_phys(volatile void * address)
{
unsigned long real_address;
- __asm__ (
+ asm volatile(
#ifndef __s390x__
- " lra %0,0(%1)\n"
- " jz 0f\n"
- " sr %0,%0\n"
+ " lra %0,0(%1)\n"
#else /* __s390x__ */
- " lrag %0,0(%1)\n"
- " jz 0f\n"
- " slgr %0,%0\n"
+ " lrag %0,0(%1)\n"
#endif /* __s390x__ */
+ " jz 0f\n"
+ " la %0,0\n"
"0:"
- : "=a" (real_address) : "a" (address) : "cc" );
+ : "=a" (real_address) : "a" (address) : "cc");
return real_address;
}
OpenPOWER on IntegriCloud