diff --git a/libs/binder/trusty/OS.cpp b/libs/binder/trusty/OS.cpp
index ca14286..99da1eb 100644
--- a/libs/binder/trusty/OS.cpp
+++ b/libs/binder/trusty/OS.cpp
@@ -31,6 +31,18 @@
 
 namespace android::binder::os {
 
+void trace_begin(uint64_t, const char*) {}
+
+void trace_end(uint64_t) {}
+
+uint64_t GetThreadId() {
+    return 0;
+}
+
+bool report_sysprop_change() {
+    return false;
+}
+
 status_t setNonBlocking(borrowed_fd /*fd*/) {
     // Trusty IPC syscalls are all non-blocking by default.
     return OK;
diff --git a/libs/binder/trusty/kernel/rules.mk b/libs/binder/trusty/kernel/rules.mk
index d2b37aa..69737fa 100644
--- a/libs/binder/trusty/kernel/rules.mk
+++ b/libs/binder/trusty/kernel/rules.mk
@@ -24,13 +24,13 @@
 FMTLIB_DIR := external/fmtlib
 
 MODULE_SRCS := \
+	$(LOCAL_DIR)/../OS.cpp \
 	$(LOCAL_DIR)/../TrustyStatus.cpp \
 	$(LIBBINDER_DIR)/Binder.cpp \
 	$(LIBBINDER_DIR)/BpBinder.cpp \
 	$(LIBBINDER_DIR)/FdTrigger.cpp \
 	$(LIBBINDER_DIR)/IInterface.cpp \
 	$(LIBBINDER_DIR)/IResultReceiver.cpp \
-	$(LIBBINDER_DIR)/OS_android.cpp \
 	$(LIBBINDER_DIR)/Parcel.cpp \
 	$(LIBBINDER_DIR)/Stability.cpp \
 	$(LIBBINDER_DIR)/Status.cpp \
diff --git a/libs/binder/trusty/rules.mk b/libs/binder/trusty/rules.mk
index dbddbe1..96c66a8 100644
--- a/libs/binder/trusty/rules.mk
+++ b/libs/binder/trusty/rules.mk
@@ -34,7 +34,6 @@
 	$(LIBBINDER_DIR)/FdTrigger.cpp \
 	$(LIBBINDER_DIR)/IInterface.cpp \
 	$(LIBBINDER_DIR)/IResultReceiver.cpp \
-	$(LIBBINDER_DIR)/OS_android.cpp \
 	$(LIBBINDER_DIR)/Parcel.cpp \
 	$(LIBBINDER_DIR)/ParcelFileDescriptor.cpp \
 	$(LIBBINDER_DIR)/RpcServer.cpp \