diff options
Diffstat (limited to 'libcutils/atomic-android-arm.S')
| -rw-r--r-- | libcutils/atomic-android-arm.S | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/libcutils/atomic-android-arm.S b/libcutils/atomic-android-arm.S index 1dd2363..f918990 100644 --- a/libcutils/atomic-android-arm.S +++ b/libcutils/atomic-android-arm.S @@ -14,6 +14,8 @@ * limitations under the License. */ +/* TODO: insert memory barriers on SMP */ + #include <machine/cpu-features.h> /* @@ -43,6 +45,8 @@ .global android_atomic_cmpxchg .type android_atomic_cmpxchg, %function + .global android_atomic_acquire_cmpxchg + .type android_atomic_acquire_cmpxchg, %function /* * ---------------------------------------------------------------------------- @@ -237,7 +241,7 @@ android_atomic_or: /* replaced swp instruction with ldrex/strex for ARMv6 & ARMv7 */ android_atomic_swap: -#if defined (_ARM_HAVE_LDREX_STREX) +#if defined (__ARM_HAVE_LDREX_STREX) 1: ldrex r2, [r1] strex r3, r0, [r1] teq r3, #0 @@ -256,6 +260,7 @@ android_atomic_swap: * output: r0 = 0 (xchg done) or non-zero (xchg not done) */ +android_atomic_acquire_cmpxchg: android_atomic_cmpxchg: .fnstart .save {r4, lr} @@ -282,10 +287,3 @@ android_atomic_cmpxchg: bx lr .fnend -/* - * ---------------------------------------------------------------------------- - * android_atomic_cmpxchg_64 - * input: r0-r1=oldvalue, r2-r3=newvalue, arg4 (on stack)=address - * output: r0 = 0 (xchg done) or non-zero (xchg not done) - */ -/* TODO: NEED IMPLEMENTATION FOR THIS ARCHITECTURE */ |