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diff --git a/gdb/config/mips/xm-mipsm3.h b/gdb/config/mips/xm-mipsm3.h
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+/* Definitions to make GDB run on a mips box under 4.3bsd.
+ Copyright (C) 1986, 1987, 1989 Free Software Foundation, Inc.
+ Contributed by Per Bothner(bothner@cs.wisc.edu) at U.Wisconsin
+ and by Alessandro Forin(af@cs.cmu.edu) at CMU
+
+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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#if !defined (HOST_BYTE_ORDER)
+#define HOST_BYTE_ORDER LITTLE_ENDIAN
+#endif
+
+#define KERNEL_U_ADDR 0 /* Not needed. */
+
+/* Only used for core files on DECstations. */
+
+#define REGISTER_U_ADDR(addr, blockend, regno) \
+ if (regno < 38) addr = (NBPG*UPAGES) + (regno - 38)*sizeof(int);\
+ else addr = 0; /* ..somewhere in the pcb */