diff --git a/include/Makefile b/include/Makefile
index 28b52947b72d..4e0470edc9d0 100644
--- a/include/Makefile
+++ b/include/Makefile
@@ -12,7 +12,7 @@ INCS=	a.out.h ar.h assert.h bitstring.h complex.h cpio.h ctype.h db.h \
 	inttypes.h iso646.h kenv.h langinfo.h libgen.h limits.h link.h \
 	locale.h malloc.h memory.h monetary.h mpool.h ndbm.h netconfig.h \
 	netdb.h nl_types.h nlist.h nss.h nsswitch.h objformat.h paths.h \
-	pthread.h \
+	proc_service.h pthread.h \
 	pthread_np.h pwd.h ranlib.h readpassphrase.h regex.h regexp.h \
 	resolv.h rune.h runetype.h search.h setjmp.h sgtty.h signal.h stab.h \
 	stdbool.h stddef.h stdio.h stdlib.h string.h stringlist.h \
diff --git a/include/proc_service.h b/include/proc_service.h
new file mode 100644
index 000000000000..d819095927e4
--- /dev/null
+++ b/include/proc_service.h
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2004 David Xu <davidxu@freebsd.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _PROC_SERVICE_H_
+#define _PROC_SERVICE_H_
+
+#include <sys/types.h>
+#include <sys/procfs.h>
+
+struct ps_prochandle;
+
+typedef enum
+{
+    PS_OK,
+    PS_ERR,
+    PS_BADPID,
+    PS_BADLID,
+    PS_BADADDR,
+    PS_NOSYM,
+    PS_NOFREGS
+} ps_err_e;
+
+/*
+ * Every program that links libthread_db must provide a set of process control
+ * primitives to access memory and registers in the target process, to start
+ * and to stop the target process, and to look up symbols in the target process.
+ */
+
+#if 0
+ps_err_e ps_pdmodel(struct ps_prochandle *ph, int *data_model);
+#endif
+ps_err_e ps_pglobal_lookup(struct ps_prochandle *ph, const char *object_name,
+		const char *sym_name , psaddr_t *sym_addr);
+#if 0
+ps_err_e ps_pglobal_sym(struct ps_prochandle *ph, const char *object_name,
+		const char *sym_name , ps_sym_t *sym);
+ps_err_e ps_pread(struct ps_prochandle *ph, psaddr_t addr, void *buf,
+		size_t size);
+ps_err_e ps_pwrite(struct ps_prochandle *ph, psaddr_t addr, const void *buf,
+		size_t size);
+#endif
+ps_err_e ps_pdread(struct ps_prochandle *ph, psaddr_t addr, void *buf,
+		size_t size);
+ps_err_e ps_pdwrite(struct ps_prochandle *ph, psaddr_t addr, const void *buf,
+		size_t size);
+ps_err_e ps_ptread(struct ps_prochandle *ph, psaddr_t addr, void *buf,
+		size_t size);
+ps_err_e ps_ptwrite(struct ps_prochandle *ph, psaddr_t addr, const void *buf,
+		size_t size);
+ps_err_e ps_pstop(struct ps_prochandle *ph);
+ps_err_e ps_pcontinue(struct ps_prochandle *ph);
+ps_err_e ps_lstop(struct ps_prochandle *ph, lwpid_t lwpid);
+ps_err_e ps_lcontinue(struct ps_prochandle *ph, lwpid_t lwpid);
+ps_err_e ps_lgetregs(struct ps_prochandle *ph, lwpid_t lwpid,
+		prgregset_t gregset);
+ps_err_e ps_lsetregs(struct ps_prochandle *ph, lwpid_t lwpid,
+		const prgregset_t gregset);
+ps_err_e ps_lgetfpregs(struct ps_prochandle *ph, lwpid_t lwpid,
+		prfpregset_t *fpregset);
+ps_err_e ps_lsetfpregs(struct ps_prochandle *ph, lwpid_t lwpid,
+		const prfpregset_t *fpregset);
+#if 0
+ps_err_e ps_pauxv(struct ps_prochandle *ph, const auxv_t **auxp);
+ps_err_e ps_kill(struct ps_prochandle *ph, int sig);
+ps_err_e ps_lrolltoaddr(struct ps_prochandle *ph, lwpid_t lwpid,
+		psaddr_t go_addr, psaddr_t stop_addr);
+#endif
+void ps_plog(const char *fmt, ...);
+pid_t ps_getpid (struct ps_prochandle *ph);
+ 
+#endif