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Diffstat (limited to 'arch/sparc/lib/atomic_64.S')
-rw-r--r--arch/sparc/lib/atomic_64.S20
1 files changed, 8 insertions, 12 deletions
diff --git a/arch/sparc/lib/atomic_64.S b/arch/sparc/lib/atomic_64.S
index 0268210ca168..703c9c3935b7 100644
--- a/arch/sparc/lib/atomic_64.S
+++ b/arch/sparc/lib/atomic_64.S
@@ -52,10 +52,9 @@ atomic_add_ret: /* %o0 = increment, %o1 = atomic_ptr */
cas [%o1], %g1, %g7
cmp %g1, %g7
bne,pn %icc, 2f
- add %g7, %o0, %g7
- sra %g7, 0, %o0
+ add %g1, %o0, %g1
retl
- nop
+ sra %g1, 0, %o0
2: BACKOFF_SPIN(%o2, %o3, 1b)
.size atomic_add_ret, .-atomic_add_ret
@@ -68,10 +67,9 @@ atomic_sub_ret: /* %o0 = decrement, %o1 = atomic_ptr */
cas [%o1], %g1, %g7
cmp %g1, %g7
bne,pn %icc, 2f
- sub %g7, %o0, %g7
- sra %g7, 0, %o0
+ sub %g1, %o0, %g1
retl
- nop
+ sra %g1, 0, %o0
2: BACKOFF_SPIN(%o2, %o3, 1b)
.size atomic_sub_ret, .-atomic_sub_ret
@@ -114,10 +112,9 @@ atomic64_add_ret: /* %o0 = increment, %o1 = atomic_ptr */
casx [%o1], %g1, %g7
cmp %g1, %g7
bne,pn %xcc, 2f
- add %g7, %o0, %g7
- mov %g7, %o0
- retl
nop
+ retl
+ add %g1, %o0, %o0
2: BACKOFF_SPIN(%o2, %o3, 1b)
.size atomic64_add_ret, .-atomic64_add_ret
@@ -130,9 +127,8 @@ atomic64_sub_ret: /* %o0 = decrement, %o1 = atomic_ptr */
casx [%o1], %g1, %g7
cmp %g1, %g7
bne,pn %xcc, 2f
- sub %g7, %o0, %g7
- mov %g7, %o0
- retl
nop
+ retl
+ sub %g1, %o0, %o0
2: BACKOFF_SPIN(%o2, %o3, 1b)
.size atomic64_sub_ret, .-atomic64_sub_ret