diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index c0937b216..81e7aeae0 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,10 @@
+Thu Aug 24 14:33:46 2000  Christopher Faylor <cgf@cygnus.com>
+
+	* include/cygwin/core_dump.h: New file, contains structures used in
+	cygwin core core files.
+	* include/sys/procfs.h: New file, needed to autoconfigure cygwin core
+	dumps support in bfd.
+
 Thu Aug 24 13:50:15 2000  Christopher Faylor <cgf@cygnus.com>
 
 	* environ.cc (parse_thing): nobinmode should force O_TEXT.
diff --git a/winsup/cygwin/include/cygwin/core_dump.h b/winsup/cygwin/include/cygwin/core_dump.h
new file mode 100644
index 000000000..647dc2cb3
--- /dev/null
+++ b/winsup/cygwin/include/cygwin/core_dump.h
@@ -0,0 +1,73 @@
+/* core_dump.h
+
+   Copyright 1999 Cygnus Solutions.
+
+   Written by Egor Duda <deo@logos-m.ru>
+
+This file is part of Cygwin.
+
+This software is a copyrighted work licensed under the terms of the
+Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
+details. */
+
+#ifndef _CYGWIN_CORE_DUMP_H
+#define _CYGWIN_CORE_DUMP_H
+
+#include <windows.h>
+
+#define	NOTE_INFO_PROCESS	1
+#define	NOTE_INFO_THREAD	2
+#define	NOTE_INFO_MODULE	3
+
+struct win32_core_process_info
+{
+  DWORD pid;
+  int signal;
+  int command_line_size;
+  char command_line[1];
+}
+#ifdef __GNUC__
+  __attribute__ ((packed))
+#endif
+;
+
+struct win32_core_thread_info
+{
+  DWORD tid;
+  BOOL is_active_thread;
+  CONTEXT thread_context;
+}
+#ifdef __GNUC__
+  __attribute__ ((packed))
+#endif
+;
+
+struct win32_core_module_info
+{
+  void* base_address;
+  int module_name_size;
+  char module_name[1];
+}
+#ifdef __GNUC__
+  __attribute__ ((packed))
+#endif
+;
+
+struct win32_pstatus
+{
+  unsigned long data_type;
+  union
+    {
+      struct win32_core_process_info process_info;
+      struct win32_core_thread_info thread_info;
+      struct win32_core_module_info module_info;
+    } data ;
+}
+#ifdef __GNUC__
+  __attribute__ ((packed))
+#endif
+;
+
+typedef struct win32_pstatus win32_pstatus_t ;
+
+#endif /* _CYGWIN_CORE_DUMP_H */
diff --git a/winsup/cygwin/include/sys/procfs.h b/winsup/cygwin/include/sys/procfs.h
new file mode 100644
index 000000000..e30da5dc0
--- /dev/null
+++ b/winsup/cygwin/include/sys/procfs.h
@@ -0,0 +1,11 @@
+/* 
+ * sys/procfs.h header file for Cygwin.
+ *
+ */
+
+#ifndef _SYS_PROCFS_H
+#define _SYS_PROCFS_H
+
+#include <cygwin/core_dump.h>
+
+#endif /* _SYS_PROCFS_H */