diff -bur threadexec-orig/src/thread_call.c threadexec/src/thread_call.c
--- threadexec-orig/src/thread_call.c	2020-03-13 21:38:03.000000000 -0400
+++ threadexec/src/thread_call.c	2020-03-13 20:16:57.000000000 -0400
@@ -17,6 +17,7 @@
 #if __arm64__
 	impl = thread_save_state_arm64;
 #endif
+	return NULL;
 	if (impl == NULL) {
 		DEBUG_TRACE(1, "%s: No implementation available for this platform", __func__);
 		return false;
@@ -31,6 +32,7 @@
 #if __arm64__
 	impl = thread_restore_state_arm64;
 #endif
+	return NULL;
 	if (impl == NULL) {
 		DEBUG_TRACE(1, "%s: No implementation available for this platform", __func__);
 		return false;
diff -bur threadexec-orig/src/threadexec_call.c threadexec/src/threadexec_call.c
--- threadexec-orig/src/threadexec_call.c	2020-03-13 21:38:03.000000000 -0400
+++ threadexec/src/threadexec_call.c	2020-03-13 20:16:57.000000000 -0400
@@ -4,6 +4,7 @@
 #include "tx_log.h"
 
 #include <assert.h>
+#include <stdio.h>
 
 bool
 threadexec_call_fast(threadexec_t threadexec, void *result, size_t result_size,
@@ -57,6 +58,7 @@
 	size_t shmem_position = 0;
 	for (size_t i = 0; i < argument_count; i++) {
 		enum threadexec_value_disposition disposition = arguments[i].disposition;
+		printf("%d\n", disposition);
 		switch (disposition) {
 			case TX_DISPOSITION_LITERAL:
 				literal_arguments[i].value = arguments[i].value;
diff -bur threadexec-orig/src/tx_call.c threadexec/src/tx_call.c
--- threadexec-orig/src/tx_call.c	2020-03-13 21:38:03.000000000 -0400
+++ threadexec/src/tx_call.c	2020-03-13 20:16:57.000000000 -0400
@@ -10,10 +10,10 @@
 tx_preserve(threadexec_t threadexec) {
 	assert(threadexec->preserve_state == NULL && threadexec->thread != MACH_PORT_NULL);
 	const void *state = thread_save_state(threadexec->thread);
-	if (state == NULL) {
-		ERROR("Could not preserve thread 0x%x", threadexec->thread);
-		return false;
-	}
+	// if (state == NULL) {
+	// 	ERROR("Could not preserve thread 0x%x", threadexec->thread);
+	// 	return false;
+	// }
 	threadexec->preserve_state = state;
 	return true;
 }