--- Libc/Libc-498/pthreads/thread_setup.c
+++ Libc/Libc-391.2.3/pthreads/thread_setup.c
@@ -156,53 +156,6 @@
 			r);
 	}
 
-#elif defined(__x86_64__)
-        x86_thread_state64_t state = {0};
-        x86_thread_state64_t *ts = &state;
-        uintptr_t *sp = vsp;
-
-        /*
-         * Set up x86-64 registers & function call.
-         */
-        count = x86_THREAD_STATE64_COUNT;
-	if (suspended) {
-	        PTHREAD_MACH_CALL(thread_get_state(thread->kernel_thread,
-					   x86_THREAD_STATE64,
-					   (thread_state_t) &state,
-					   &count),
-			  r);
-	}
-        ts->rip = (uintptr_t) routine;
-
-        /*
-        ** We need to simulate a 16-byte aligned stack frame as if we had
-        ** executed a call instruction. The stack should already be aligned
-		** before it comes to us and we don't need to push any arguments,
-		** so we shouldn't need to change it.
-        */
-
-		ts->rdi = (uintptr_t) thread;	/* argument to function */
-        *--sp = 0;            /* fake return address */
-        ts->rsp = (uintptr_t) sp;   /* set stack pointer */
-	/* Incase of needresume, suspend is always set */
-        if (suspended) {
-		PTHREAD_MACH_CALL(thread_set_state(thread->kernel_thread,
-					   x86_THREAD_STATE64,
-					   (thread_state_t) &state,
-					   x86_THREAD_STATE64_COUNT),
-			  r);
-		if (needresume)
-			PTHREAD_MACH_CALL(thread_resume(thread->kernel_thread),
-				r);
-	} else {
-		PTHREAD_MACH_CALL(thread_create_running(mach_task_self(),
-					x86_THREAD_STATE64,
-					(thread_state_t) ts,
-					x86_THREAD_STATE64_COUNT,
-					&thread->kernel_thread),
-			r);
-	}
-
 #else
 #error _pthread_setup not defined for this architecture
 #endif