diff options
Diffstat (limited to 'arch/sparc/lib/atomic_64.S')
| -rw-r--r-- | arch/sparc/lib/atomic_64.S | 20 |
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 |