Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 55daeabb authored by Ricardo Cerqueira's avatar Ricardo Cerqueira
Browse files

libcutils: Reintroduce the android_atomic_cmpxchg symbol on ARM 

Some proprietary blobs from older Android versions use it, so we need
to keep this until those blobs go away.

Change-Id: I20fb4a75832bb386850a80711ebf704eb1f7213a
parent 896ab51e

include/cutils/atomic-arm.h

+9 −0
Original line number Diff line number Diff line
@@ -129,6 +129,15 @@ extern inline int android_atomic_release_cas(int32_t old_value, 
    return android_atomic_cas(old_value, new_value, ptr);

}



/* Yeah, deprecated but old props use it */

extern inline int android_atomic_cmpxchg(int32_t old_value,

                                             int32_t new_value,

                                             volatile int32_t *ptr)

{

    android_memory_barrier();

    return android_atomic_cas(old_value, new_value, ptr);

}





#if defined(__thumb__)

extern int32_t android_atomic_swap(int32_t new_value,

include/cutils/atomic.h

+6 −1
Original line number Diff line number Diff line
@@ -112,6 +112,12 @@ int android_atomic_acquire_cas(int32_t oldvalue, int32_t newvalue, 
        volatile int32_t* addr);

int android_atomic_release_cas(int32_t oldvalue, int32_t newvalue,

        volatile int32_t* addr);

#if defined(__ARM_ARCH__) || defined (__ARM_EABI__)

int android_atomic_cmpxchg(int32_t oldvalue, int32_t newvalue,

        volatile int32_t* addr);

#else

#define android_atomic_cmpxchg android_atomic_release_cas

#endif



/*

 * Aliases for code using an older version of this header.  These are now
@@ -119,7 +125,6 @@ int android_atomic_release_cas(int32_t oldvalue, int32_t newvalue, 
 * in a future release.

 */

#define android_atomic_write android_atomic_release_store

#define android_atomic_cmpxchg android_atomic_release_cas



#ifdef __cplusplus

} // extern "C"