Gitweb:     http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=efc362...
Commit:     efc3624c9419cad3cca93dfabb7b12664773d2b1
Parent:     d5e54913433fff89609adfc4b96fefcf807a9030
Author:     Paul Mackerras <paulus@samba.org>
AuthorDate: Wed Nov 5 18:39:27 2008 +0000
Committer:  Paul Mackerras <paulus@samba.org>
CommitDate: Wed Nov 19 16:04:28 2008 +1100

    powerpc: Tell gcc when we clobber the carry in inline asm
    
    We have several instances of inline assembly code that use the addic
    or addic. instructions, but don't include XER in the list of clobbers.
    The addic and addic. instructions affect the carry bit, which is in
    the XER register.
    
    This adds "xer" to the list of clobbers for those inline asm
    statements that use addic or addic. and didn't already have it.
    
    Signed-off-by: Paul Mackerras <paulus@samba.org>
---
 arch/powerpc/include/asm/atomic.h   |   18 +++++++++---------
 arch/powerpc/include/asm/local.h    |    4 ++--
 arch/powerpc/include/asm/spinlock.h |    2 +-
 3 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/arch/powerpc/include/asm/atomic.h b/arch/powerpc/include/asm/atomic.h
index f3fc733..499be5b 100644
--- a/arch/powerpc/include/asm/atomic.h
+++ b/arch/powerpc/include/asm/atomic.h
@@ -111,7 +111,7 @@ static __inline__ void atomic_inc(atomic_t *v)
 	bne-	1b"
 	: "=&r" (t), "+m" (v->counter)
 	: "r" (&v->counter)
-	: "cc");
+	: "cc", "xer");
 }
 
 static __inline__ int atomic_inc_return(atomic_t *v)
@@ -128,7 +128,7 @@ static __inline__ int atomic_inc_return(atomic_t *v)
 	ISYNC_ON_SMP
 	: "=&r" (t)
 	: "r" (&v->counter)
-	: "cc", "memory");
+	: "cc", "xer", "memory");
 
 	return t;
 }
@@ -155,7 +155,7 @@ static __inline__ void atomic_dec(atomic_t *v)
 	bne-	1b"
 	: "=&r" (t), "+m" (v->counter)
 	: "r" (&v->counter)
-	: "cc");
+	: "cc", "xer");
 }
 
 static __inline__ int atomic_dec_return(atomic_t *v)
@@ -172,7 +172,7 @@ static __inline__ int atomic_dec_return(atomic_t *v)
 	ISYNC_ON_SMP
 	: "=&r" (t)
 	: "r" (&v->counter)
-	: "cc", "memory");
+	: "cc", "xer", "memory");
 
 	return t;
 }
@@ -346,7 +346,7 @@ static __inline__ void atomic64_inc(atomic64_t *v)
 	bne-	1b"
 	: "=&r" (t), "+m" (v->counter)
 	: "r" (&v->counter)
-	: "cc");
+	: "cc", "xer");
 }
 
 static __inline__ long atomic64_inc_return(atomic64_t *v)
@@ -362,7 +362,7 @@ static __inline__ long atomic64_inc_return(atomic64_t *v)
 	ISYNC_ON_SMP
 	: "=&r" (t)
 	: "r" (&v->counter)
-	: "cc", "memory");
+	: "cc", "xer", "memory");
 
 	return t;
 }
@@ -388,7 +388,7 @@ static __inline__ void atomic64_dec(atomic64_t *v)
 	bne-	1b"
 	: "=&r" (t), "+m" (v->counter)
 	: "r" (&v->counter)
-	: "cc");
+	: "cc", "xer");
 }
 
 static __inline__ long atomic64_dec_return(atomic64_t *v)
@@ -404,7 +404,7 @@ static __inline__ long atomic64_dec_return(atomic64_t *v)
 	ISYNC_ON_SMP
 	: "=&r" (t)
 	: "r" (&v->counter)
-	: "cc", "memory");
+	: "cc", "xer", "memory");
 
 	return t;
 }
@@ -431,7 +431,7 @@ static __inline__ long atomic64_dec_if_positive(atomic64_t *v)
 	"\n\
 2:"	: "=&r" (t)
 	: "r" (&v->counter)
-	: "cc", "memory");
+	: "cc", "xer", "memory");
 
 	return t;
 }
diff --git a/arch/powerpc/include/asm/local.h b/arch/powerpc/include/asm/local.h
index 612d832..84b457a 100644
--- a/arch/powerpc/include/asm/local.h
+++ b/arch/powerpc/include/asm/local.h
@@ -67,7 +67,7 @@ static __inline__ long local_inc_return(local_t *l)
 	bne-	1b"
 	: "=&r" (t)
 	: "r" (&(l->a.counter))
-	: "cc", "memory");
+	: "cc", "xer", "memory");
 
 	return t;
 }
@@ -94,7 +94,7 @@ static __inline__ long local_dec_return(local_t *l)
 	bne-	1b"
 	: "=&r" (t)
 	: "r" (&(l->a.counter))
-	: "cc", "memory");
+	: "cc", "xer", "memory");
 
 	return t;
 }
diff --git a/arch/powerpc/include/asm/spinlock.h b/arch/powerpc/include/asm/spinlock.h
index f56a843..3686436 100644
--- a/arch/powerpc/include/asm/spinlock.h
+++ b/arch/powerpc/include/asm/spinlock.h
@@ -277,7 +277,7 @@ static inline void __raw_read_unlock(raw_rwlock_t *rw)
 	bne-		1b"
 	: "=&r"(tmp)
 	: "r"(&rw->lock)
-	: "cr0", "memory");
+	: "cr0", "xer", "memory");
 }
 
 static inline void __raw_write_unlock(raw_rwlock_t *rw)
--
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