diff --git a/adb/Android.mk b/adb/Android.mk
index ba20bbe..83d168b 100644
--- a/adb/Android.mk
+++ b/adb/Android.mk
@@ -23,7 +23,12 @@
 include $(CLEAR_VARS)
 LOCAL_MODULE := libadbd
 LOCAL_CFLAGS := $(LIBADB_CFLAGS) -DADB_HOST=0
-LOCAL_SRC_FILES := $(LIBADB_SRC_FILES) $(LIBADB_LINUX_SRC_FILES) usb_linux_client.c
+LOCAL_SRC_FILES := \
+    $(LIBADB_SRC_FILES) \
+    $(LIBADB_LINUX_SRC_FILES) \
+    qemu_tracing.c \
+    usb_linux_client.c \
+
 include $(BUILD_STATIC_LIBRARY)
 
 include $(CLEAR_VARS)
diff --git a/adb/adb.c b/adb/adb.c
index 4258a01..e297c96 100644
--- a/adb/adb.c
+++ b/adb/adb.c
@@ -30,6 +30,7 @@
 #include "sysdeps.h"
 #include "adb.h"
 #include "adb_auth.h"
+#include "qemu_tracing.h"
 
 #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
 
@@ -145,59 +146,6 @@
     }
 }
 
-#if !ADB_HOST
-/*
- * Implements ADB tracing inside the emulator.
- */
-
-#include <stdarg.h>
-
-/*
- * Redefine open and write for qemu_pipe.h that contains inlined references
- * to those routines. We will redifine them back after qemu_pipe.h inclusion.
- */
-
-#undef open
-#undef write
-#define open    adb_open
-#define write   adb_write
-#include <hardware/qemu_pipe.h>
-#undef open
-#undef write
-#define open    ___xxx_open
-#define write   ___xxx_write
-
-/* A handle to adb-debug qemud service in the emulator. */
-int   adb_debug_qemu = -1;
-
-/* Initializes connection with the adb-debug qemud service in the emulator. */
-static int adb_qemu_trace_init(void)
-{
-    char con_name[32];
-
-    if (adb_debug_qemu >= 0) {
-        return 0;
-    }
-
-    /* adb debugging QEMUD service connection request. */
-    snprintf(con_name, sizeof(con_name), "qemud:adb-debug");
-    adb_debug_qemu = qemu_pipe_open(con_name);
-    return (adb_debug_qemu >= 0) ? 0 : -1;
-}
-
-void adb_qemu_trace(const char* fmt, ...)
-{
-    va_list args;
-    va_start(args, fmt);
-    char msg[1024];
-
-    if (adb_debug_qemu >= 0) {
-        vsnprintf(msg, sizeof(msg), fmt, args);
-        adb_write(adb_debug_qemu, msg, strlen(msg));
-    }
-}
-#endif  /* !ADB_HOST */
-
 apacket *get_apacket(void)
 {
     apacket *p = malloc(sizeof(apacket));
diff --git a/adb/qemu_tracing.c b/adb/qemu_tracing.c
new file mode 100644
index 0000000..f31eae8
--- /dev/null
+++ b/adb/qemu_tracing.c
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * Implements ADB tracing inside the emulator.
+ */
+
+#include <stdarg.h>
+
+#include "sysdeps.h"
+#include "qemu_tracing.h"
+
+/*
+ * Redefine open and write for qemu_pipe.h that contains inlined references
+ * to those routines. We will redifine them back after qemu_pipe.h inclusion.
+ */
+
+#undef open
+#undef write
+#define open    adb_open
+#define write   adb_write
+#include <hardware/qemu_pipe.h>
+#undef open
+#undef write
+#define open    ___xxx_open
+#define write   ___xxx_write
+
+/* A handle to adb-debug qemud service in the emulator. */
+int   adb_debug_qemu = -1;
+
+/* Initializes connection with the adb-debug qemud service in the emulator. */
+int adb_qemu_trace_init(void)
+{
+    char con_name[32];
+
+    if (adb_debug_qemu >= 0) {
+        return 0;
+    }
+
+    /* adb debugging QEMUD service connection request. */
+    snprintf(con_name, sizeof(con_name), "qemud:adb-debug");
+    adb_debug_qemu = qemu_pipe_open(con_name);
+    return (adb_debug_qemu >= 0) ? 0 : -1;
+}
+
+void adb_qemu_trace(const char* fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    char msg[1024];
+
+    if (adb_debug_qemu >= 0) {
+        vsnprintf(msg, sizeof(msg), fmt, args);
+        adb_write(adb_debug_qemu, msg, strlen(msg));
+    }
+}
diff --git a/adb/qemu_tracing.h b/adb/qemu_tracing.h
new file mode 100644
index 0000000..bf80457
--- /dev/null
+++ b/adb/qemu_tracing.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * Implements ADB tracing inside the emulator.
+ */
+
+#ifndef __QEMU_TRACING_H
+#define __QEMU_TRACING_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Initializes connection with the adb-debug qemud service in the emulator. */
+int adb_qemu_trace_init(void);
+void adb_qemu_trace(const char* fmt, ...);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __QEMU_TRACING_H */