diff --git a/libthread_db/include/thread_db.h b/libthread_db/include/thread_db.h
new file mode 100644
index 0000000..9c76d40
--- /dev/null
+++ b/libthread_db/include/thread_db.h
@@ -0,0 +1,143 @@
+/*
+ * Copyright 2006 The Android Open Source Project
+ */
+
+#ifndef _LIBTHREAD_DB__THREAD_DB_H
+#define _LIBTHREAD_DB__THREAD_DB_H
+
+#include <pthread.h>
+#include <signal.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+
+#define TD_THR_ANY_USER_FLAGS       0xffffffff
+#define TD_THR_LOWEST_PRIORITY      -20
+#define TD_SIGNO_MASK               NULL
+
+/* td_err_e values */
+enum {
+    TD_OK,
+    TD_ERR,
+    TD_NOTHR,
+    TD_NOSV,
+    TD_NOLWP,
+    TD_BADPH,
+    TD_BADTH,
+    TD_BADSH,
+    TD_BADTA,
+    TD_BADKEY,
+    TD_NOMSG,
+    TD_NOFPREGS,
+    TD_NOLIBTHREAD,
+    TD_NOEVENT,
+    TD_NOCAPAB,
+    TD_DBERR,
+    TD_NOAPLIC,
+    TD_NOTSD,
+    TD_MALLOC,
+    TD_PARTIALREG,
+    TD_NOXREGS,
+    TD_VERSION
+};
+
+/*
+ * td_event_e values 
+ * NOTE: There is a max of 32 events
+ */
+enum {
+    TD_CREATE,
+    TD_DEATH
+};
+
+/* td_thr_state_e values */
+enum {
+    TD_THR_ANY_STATE,
+    TD_THR_UNKNOWN,
+    TD_THR_SLEEP,
+    TD_THR_ZOMBIE
+};
+
+typedef int32_t td_err_e;
+typedef uint32_t td_event_e;
+typedef uint32_t td_notify_e;
+typedef uint32_t td_thr_state_e;
+typedef pthread_t thread_t;
+
+typedef struct
+{
+    pid_t pid;
+} td_thragent_t;
+
+typedef struct
+{
+    pid_t pid;
+    pid_t tid;
+} td_thrhandle_t;
+
+typedef struct
+{
+    td_event_e event;
+    td_thrhandle_t const * th_p;
+    union {
+        void * data;
+    } msg;
+} td_event_msg_t;
+
+typedef struct
+{
+    uint32_t events;
+} td_thr_events_t;
+
+typedef struct
+{
+    union {
+        void * bptaddr;
+    } u;
+} td_notify_t;
+
+typedef struct
+{
+    td_thr_state_e ti_state;
+    thread_t ti_tid; // pthread's id for the thread
+    int32_t ti_lid; // the kernel's id for the thread
+} td_thrinfo_t;
+
+
+#define td_event_emptyset(set) \
+    (set)->events = 0
+
+#define td_event_fillset(set) \
+    (set)->events = 0xffffffff
+
+#define td_event_addset(set, n) \
+    (set)->events |= (1 << n)
+
+
+typedef int td_thr_iter_f(td_thrhandle_t const *, void *);
+
+
+struct ps_prochandle;
+
+#ifdef __cplusplus
+extern "C"{
+#endif
+
+extern td_err_e td_ta_new(struct ps_prochandle const * proc_handle, td_thragent_t ** thread_agent);
+
+extern td_err_e td_ta_set_event(td_thragent_t const * agent, td_thr_events_t * event);
+
+extern td_err_e td_ta_event_addr(td_thragent_t const * agent, td_event_e event, td_notify_t * notify);
+
+extern td_err_e td_ta_event_getmsg(td_thragent_t const * agent, td_event_msg_t * event);
+
+extern td_err_e td_ta_thr_iter(td_thragent_t const * agent, td_thr_iter_f * func, void * cookie,
+                               td_thr_state_e state, int32_t prio, sigset_t * sigmask, uint32_t user_flags);
+
+extern char const ** td_symbol_list(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif