diff --git a/libc/arch-arm/bionic/atomics_arm.S b/libc/arch-arm/bionic/atomics_arm.S
index b2da09f..57c4239 100644
--- a/libc/arch-arm/bionic/atomics_arm.S
+++ b/libc/arch-arm/bionic/atomics_arm.S
@@ -129,8 +129,18 @@
 #endif
 
 /* r0(new) r1(addr) -> r0(old) */
+/* replaced swp instruction with ldrex/strex for ARMv6 & ARMv7 */
 __atomic_swap:
+#if defined (_ARM_HAVE_LDREX_STREX)
+1:  ldrex   r2, [r1]
+    strex   r3, r0, [r1]
+    teq     r3, #0
+    bne     1b
+    mov     r0, r2
+    mcr     p15, 0, r0, c7, c10, 5 /* or, use dmb */
+#else
     swp     r0, r0, [r1]
+#endif
     bx      lr
 
 /* __futex_wait(*ftx, val, *timespec) */
diff --git a/libc/arch-arm/include/machine/cpu-features.h b/libc/arch-arm/include/machine/cpu-features.h
index f836006..ecf6ff6 100644
--- a/libc/arch-arm/include/machine/cpu-features.h
+++ b/libc/arch-arm/include/machine/cpu-features.h
@@ -149,6 +149,13 @@
 #  define __ARM_HAVE_PC_INTERWORK
 #endif
 
+/* define _ARM_HAVE_LDREX_STREX for ARMv6 and ARMv7 architecure to be
+ * used in replacement of depricated swp instruction
+ */
+#if __ARM_ARCH__ >= 6
+#  define _ARM_HAVE_LDREX_STREX
+#endif
+
 
 /* Assembly-only macros */
 
diff --git a/libc/bionic/pthread.c b/libc/bionic/pthread.c
index ec3c459..d2c81a3 100644
--- a/libc/bionic/pthread.c
+++ b/libc/bionic/pthread.c
@@ -1215,22 +1215,12 @@
                             pthread_mutex_t * mutex,
                             unsigned msecs)
 {
-    int oldvalue;
     struct timespec ts;
-    int status;
 
     ts.tv_sec = msecs / 1000;
     ts.tv_nsec = (msecs % 1000) * 1000000;
 
-    oldvalue = cond->value;
-
-    pthread_mutex_unlock(mutex);
-    status = __futex_wait(&cond->value, oldvalue, &ts);
-    pthread_mutex_lock(mutex);
-
-    if(status == (-ETIMEDOUT)) return ETIMEDOUT;
-
-    return 0;
+    return __pthread_cond_timedwait_relative(cond, mutex, &ts);
 }