Alpha host support.

gdb/config/alpha/.Sanitize

@@ -22,6 +22,7 @@ Do-first:
 Things-to-keep:
 
 alpha-osf.mh
+xm-alpha.h
 
 Things-to-lose:
 

gdb/config/alpha/xm-alpha.h

@@ -0,0 +1,40 @@
+/* Definitions to make GDB run on an Alpha box under OSF 1.
+   Copyright (C) 1992 Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#if !defined (HOST_BYTE_ORDER)
+#define HOST_BYTE_ORDER LITTLE_ENDIAN
+#endif
+
+/* Get rid of any system-imposed stack limit if possible */
+
+#define	SET_STACK_LIMIT_HUGE
+
+#define	MEM_FNS_DECLARED
+
+#if ! defined (__STDC__) && ! defined (offsetof)
+# define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
+#endif
+
+/*#define MALLOC_INCOMPATIBLE*/
+
+extern void free PARAMS ((void *));
+
+#define NO_SIGINTERRUPT
+
+#define KERNEL_U_ADDR 0