[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, 119 insertions, 119 deletions

diff --git a/include/asm-s390/rwsem.h b/include/asm-s390/rwsem.h
index 13ec16965150..90f4eccaa290 100644
--- a/include/asm-s390/rwsem.h
+++ b/include/asm-s390/rwsem.h
@@ -122,23 +122,23 @@ static inline void __down_read(struct rw_semaphore *sem)
 {
 	signed long old, new;
 
-	__asm__ __volatile__(
+	asm volatile(
 #ifndef __s390x__
-		"   l    %0,0(%3)\n"
-		"0: lr   %1,%0\n"
-		"   ahi  %1,%5\n"
-		"   cs   %0,%1,0(%3)\n"
-		"   jl   0b"
+		"	l	%0,0(%3)\n"
+		"0:	lr	%1,%0\n"
+		"	ahi	%1,%5\n"
+		"	cs	%0,%1,0(%3)\n"
+		"	jl	0b"
 #else /* __s390x__ */
-		"   lg   %0,0(%3)\n"
-		"0: lgr  %1,%0\n"
-		"   aghi %1,%5\n"
-		"   csg  %0,%1,0(%3)\n"
-		"   jl   0b"
+		"	lg	%0,0(%3)\n"
+		"0:	lgr	%1,%0\n"
+		"	aghi	%1,%5\n"
+		"	csg	%0,%1,0(%3)\n"
+		"	jl	0b"
 #endif /* __s390x__ */
-                : "=&d" (old), "=&d" (new), "=m" (sem->count)
+		: "=&d" (old), "=&d" (new), "=m" (sem->count)
 		: "a" (&sem->count), "m" (sem->count),
-		  "i" (RWSEM_ACTIVE_READ_BIAS) : "cc", "memory" );
+		  "i" (RWSEM_ACTIVE_READ_BIAS) : "cc", "memory");
 	if (old < 0)
 		rwsem_down_read_failed(sem);
 }
@@ -150,27 +150,27 @@ static inline int __down_read_trylock(struct rw_semaphore *sem)
 {
 	signed long old, new;
 
-	__asm__ __volatile__(
+	asm volatile(
 #ifndef __s390x__
-		"   l    %0,0(%3)\n"
-		"0: ltr  %1,%0\n"
-		"   jm   1f\n"
-		"   ahi  %1,%5\n"
-		"   cs   %0,%1,0(%3)\n"
-		"   jl   0b\n"
+		"	l	%0,0(%3)\n"
+		"0:	ltr	%1,%0\n"
+		"	jm	1f\n"
+		"	ahi	%1,%5\n"
+		"	cs	%0,%1,0(%3)\n"
+		"	jl	0b\n"
 		"1:"
 #else /* __s390x__ */
-		"   lg   %0,0(%3)\n"
-		"0: ltgr %1,%0\n"
-		"   jm   1f\n"
-		"   aghi %1,%5\n"
-		"   csg  %0,%1,0(%3)\n"
-		"   jl   0b\n"
+		"	lg	%0,0(%3)\n"
+		"0:	ltgr	%1,%0\n"
+		"	jm	1f\n"
+		"	aghi	%1,%5\n"
+		"	csg	%0,%1,0(%3)\n"
+		"	jl	0b\n"
 		"1:"
 #endif /* __s390x__ */
-                : "=&d" (old), "=&d" (new), "=m" (sem->count)
+		: "=&d" (old), "=&d" (new), "=m" (sem->count)
 		: "a" (&sem->count), "m" (sem->count),
-		  "i" (RWSEM_ACTIVE_READ_BIAS) : "cc", "memory" );
+		  "i" (RWSEM_ACTIVE_READ_BIAS) : "cc", "memory");
 	return old >= 0 ? 1 : 0;
 }
 
@@ -182,23 +182,23 @@ static inline void __down_write_nested(struct rw_semaphore *sem, int subclass)
 	signed long old, new, tmp;
 
 	tmp = RWSEM_ACTIVE_WRITE_BIAS;
-	__asm__ __volatile__(
+	asm volatile(
 #ifndef __s390x__
-		"   l    %0,0(%3)\n"
-		"0: lr   %1,%0\n"
-		"   a    %1,%5\n"
-		"   cs   %0,%1,0(%3)\n"
-		"   jl   0b"
+		"	l	%0,0(%3)\n"
+		"0:	lr	%1,%0\n"
+		"	a	%1,%5\n"
+		"	cs	%0,%1,0(%3)\n"
+		"	jl	0b"
 #else /* __s390x__ */
-		"   lg   %0,0(%3)\n"
-		"0: lgr  %1,%0\n"
-		"   ag   %1,%5\n"
-		"   csg  %0,%1,0(%3)\n"
-		"   jl   0b"
+		"	lg	%0,0(%3)\n"
+		"0:	lgr	%1,%0\n"
+		"	ag	%1,%5\n"
+		"	csg	%0,%1,0(%3)\n"
+		"	jl	0b"
 #endif /* __s390x__ */
-                : "=&d" (old), "=&d" (new), "=m" (sem->count)
+		: "=&d" (old), "=&d" (new), "=m" (sem->count)
 		: "a" (&sem->count), "m" (sem->count), "m" (tmp)
-		: "cc", "memory" );
+		: "cc", "memory");
 	if (old != 0)
 		rwsem_down_write_failed(sem);
 }
@@ -215,24 +215,24 @@ static inline int __down_write_trylock(struct rw_semaphore *sem)
 {
 	signed long old;
 
-	__asm__ __volatile__(
+	asm volatile(
 #ifndef __s390x__
-		"   l    %0,0(%2)\n"
-		"0: ltr  %0,%0\n"
-		"   jnz  1f\n"
-		"   cs   %0,%4,0(%2)\n"
-		"   jl   0b\n"
+		"	l	%0,0(%2)\n"
+		"0:	ltr	%0,%0\n"
+		"	jnz	1f\n"
+		"	cs	%0,%4,0(%2)\n"
+		"	jl	0b\n"
 #else /* __s390x__ */
-		"   lg   %0,0(%2)\n"
-		"0: ltgr %0,%0\n"
-		"   jnz  1f\n"
-		"   csg  %0,%4,0(%2)\n"
-		"   jl   0b\n"
+		"	lg	%0,0(%2)\n"
+		"0:	ltgr	%0,%0\n"
+		"	jnz	1f\n"
+		"	csg	%0,%4,0(%2)\n"
+		"	jl	0b\n"
 #endif /* __s390x__ */
 		"1:"
-                : "=&d" (old), "=m" (sem->count)
+		: "=&d" (old), "=m" (sem->count)
 		: "a" (&sem->count), "m" (sem->count),
-		  "d" (RWSEM_ACTIVE_WRITE_BIAS) : "cc", "memory" );
+		  "d" (RWSEM_ACTIVE_WRITE_BIAS) : "cc", "memory");
 	return (old == RWSEM_UNLOCKED_VALUE) ? 1 : 0;
 }
 
@@ -243,24 +243,24 @@ static inline void __up_read(struct rw_semaphore *sem)
 {
 	signed long old, new;
 
-	__asm__ __volatile__(
+	asm volatile(
 #ifndef __s390x__
-		"   l    %0,0(%3)\n"
-		"0: lr   %1,%0\n"
-		"   ahi  %1,%5\n"
-		"   cs   %0,%1,0(%3)\n"
-		"   jl   0b"
+		"	l	%0,0(%3)\n"
+		"0:	lr	%1,%0\n"
+		"	ahi	%1,%5\n"
+		"	cs	%0,%1,0(%3)\n"
+		"	jl	0b"
 #else /* __s390x__ */
-		"   lg   %0,0(%3)\n"
-		"0: lgr  %1,%0\n"
-		"   aghi %1,%5\n"
-		"   csg  %0,%1,0(%3)\n"
-		"   jl   0b"
+		"	lg	%0,0(%3)\n"
+		"0:	lgr	%1,%0\n"
+		"	aghi	%1,%5\n"
+		"	csg	%0,%1,0(%3)\n"
+		"	jl	0b"
 #endif /* __s390x__ */
-                : "=&d" (old), "=&d" (new), "=m" (sem->count)
+		: "=&d" (old), "=&d" (new), "=m" (sem->count)
 		: "a" (&sem->count), "m" (sem->count),
 		  "i" (-RWSEM_ACTIVE_READ_BIAS)
-		: "cc", "memory" );
+		: "cc", "memory");
 	if (new < 0)
 		if ((new & RWSEM_ACTIVE_MASK) == 0)
 			rwsem_wake(sem);
@@ -274,23 +274,23 @@ static inline void __up_write(struct rw_semaphore *sem)
 	signed long old, new, tmp;
 
 	tmp = -RWSEM_ACTIVE_WRITE_BIAS;
-	__asm__ __volatile__(
+	asm volatile(
 #ifndef __s390x__
-		"   l    %0,0(%3)\n"
-		"0: lr   %1,%0\n"
-		"   a    %1,%5\n"
-		"   cs   %0,%1,0(%3)\n"
-		"   jl   0b"
+		"	l	%0,0(%3)\n"
+		"0:	lr	%1,%0\n"
+		"	a	%1,%5\n"
+		"	cs	%0,%1,0(%3)\n"
+		"	jl	0b"
 #else /* __s390x__ */
-		"   lg   %0,0(%3)\n"
-		"0: lgr  %1,%0\n"
-		"   ag   %1,%5\n"
-		"   csg  %0,%1,0(%3)\n"
-		"   jl   0b"
+		"	lg	%0,0(%3)\n"
+		"0:	lgr	%1,%0\n"
+		"	ag	%1,%5\n"
+		"	csg	%0,%1,0(%3)\n"
+		"	jl	0b"
 #endif /* __s390x__ */
-                : "=&d" (old), "=&d" (new), "=m" (sem->count)
+		: "=&d" (old), "=&d" (new), "=m" (sem->count)
 		: "a" (&sem->count), "m" (sem->count), "m" (tmp)
-		: "cc", "memory" );
+		: "cc", "memory");
 	if (new < 0)
 		if ((new & RWSEM_ACTIVE_MASK) == 0)
 			rwsem_wake(sem);
@@ -304,23 +304,23 @@ static inline void __downgrade_write(struct rw_semaphore *sem)
 	signed long old, new, tmp;
 
 	tmp = -RWSEM_WAITING_BIAS;
-	__asm__ __volatile__(
+	asm volatile(
 #ifndef __s390x__
-		"   l    %0,0(%3)\n"
-		"0: lr   %1,%0\n"
-		"   a    %1,%5\n"
-		"   cs   %0,%1,0(%3)\n"
-		"   jl   0b"
+		"	l	%0,0(%3)\n"
+		"0:	lr	%1,%0\n"
+		"	a	%1,%5\n"
+		"	cs	%0,%1,0(%3)\n"
+		"	jl	0b"
 #else /* __s390x__ */
-		"   lg   %0,0(%3)\n"
-		"0: lgr  %1,%0\n"
-		"   ag   %1,%5\n"
-		"   csg  %0,%1,0(%3)\n"
-		"   jl   0b"
+		"	lg	%0,0(%3)\n"
+		"0:	lgr	%1,%0\n"
+		"	ag	%1,%5\n"
+		"	csg	%0,%1,0(%3)\n"
+		"	jl	0b"
 #endif /* __s390x__ */
-                : "=&d" (old), "=&d" (new), "=m" (sem->count)
+		: "=&d" (old), "=&d" (new), "=m" (sem->count)
 		: "a" (&sem->count), "m" (sem->count), "m" (tmp)
-		: "cc", "memory" );
+		: "cc", "memory");
 	if (new > 1)
 		rwsem_downgrade_wake(sem);
 }
@@ -332,23 +332,23 @@ static inline void rwsem_atomic_add(long delta, struct rw_semaphore *sem)
 {
 	signed long old, new;
 
-	__asm__ __volatile__(
+	asm volatile(
 #ifndef __s390x__
-		"   l    %0,0(%3)\n"
-		"0: lr   %1,%0\n"
-		"   ar   %1,%5\n"
-		"   cs   %0,%1,0(%3)\n"
-		"   jl   0b"
+		"	l	%0,0(%3)\n"
+		"0:	lr	%1,%0\n"
+		"	ar	%1,%5\n"
+		"	cs	%0,%1,0(%3)\n"
+		"	jl	0b"
 #else /* __s390x__ */
-		"   lg   %0,0(%3)\n"
-		"0: lgr  %1,%0\n"
-		"   agr  %1,%5\n"
-		"   csg  %0,%1,0(%3)\n"
-		"   jl   0b"
+		"	lg	%0,0(%3)\n"
+		"0:	lgr	%1,%0\n"
+		"	agr	%1,%5\n"
+		"	csg	%0,%1,0(%3)\n"
+		"	jl	0b"
 #endif /* __s390x__ */
-                : "=&d" (old), "=&d" (new), "=m" (sem->count)
+		: "=&d" (old), "=&d" (new), "=m" (sem->count)
 		: "a" (&sem->count), "m" (sem->count), "d" (delta)
-		: "cc", "memory" );
+		: "cc", "memory");
 }
 
 /*
@@ -358,23 +358,23 @@ static inline long rwsem_atomic_update(long delta, struct rw_semaphore *sem)
 {
 	signed long old, new;
 
-	__asm__ __volatile__(
+	asm volatile(
 #ifndef __s390x__
-		"   l    %0,0(%3)\n"
-		"0: lr   %1,%0\n"
-		"   ar   %1,%5\n"
-		"   cs   %0,%1,0(%3)\n"
-		"   jl   0b"
+		"	l	%0,0(%3)\n"
+		"0:	lr	%1,%0\n"
+		"	ar	%1,%5\n"
+		"	cs	%0,%1,0(%3)\n"
+		"	jl	0b"
 #else /* __s390x__ */
-		"   lg   %0,0(%3)\n"
-		"0: lgr  %1,%0\n"
-		"   agr  %1,%5\n"
-		"   csg  %0,%1,0(%3)\n"
-		"   jl   0b"
+		"	lg	%0,0(%3)\n"
+		"0:	lgr	%1,%0\n"
+		"	agr	%1,%5\n"
+		"	csg	%0,%1,0(%3)\n"
+		"	jl	0b"
 #endif /* __s390x__ */
-                : "=&d" (old), "=&d" (new), "=m" (sem->count)
+		: "=&d" (old), "=&d" (new), "=m" (sem->count)
 		: "a" (&sem->count), "m" (sem->count), "d" (delta)
-		: "cc", "memory" );
+		: "cc", "memory");
 	return new;
 }