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diff --git a/gdb/config/i386/tm-i386os9k.h b/gdb/config/i386/tm-i386os9k.h
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+/* Macro definitions for i386 running under BSD Unix.
+ Copyright 1986, 1987, 1989, 1991, 1992, 1993 Free Software Foundation, Inc.
+
+
+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. */
+
+#ifndef TM_I386OS9K_H
+#define TM_I386OS9K_H 1
+
+#include "i386/tm-i386.h"
+
+/* Number of machine registers */
+
+#undef NUM_REGS
+#define NUM_REGS (16) /* Basic i*86 regs */
+
+/* Initializer for an array of names of registers. There should be at least
+ NUM_REGS strings in this initializer. Any excess ones are simply ignored.
+ The order of the first 8 registers must match the compiler's numbering
+ scheme (which is the same as the 386 scheme) and also regmap in the various
+ *-nat.c files. */
+
+#undef REGISTER_NAMES
+#define REGISTER_NAMES { "eax", "ecx", "edx", "ebx", \
+ "esp", "ebp", "esi", "edi", \
+ "eip", "eflags", "cs", "ss", \
+ "ds", "es", "fs", "gs", \
+ }
+
+#define DATABASE_REG 3 /* ebx */
+
+/* Amount PC must be decremented by after a breakpoint. This is often the
+ number of bytes in BREAKPOINT but not always (such as now). */
+
+#undef DECR_PC_AFTER_BREAK
+#define DECR_PC_AFTER_BREAK 0
+
+/* On 386 bsd, sigtramp is above the user stack and immediately below
+ the user area. Using constants here allows for cross debugging.
+ These are tested for BSDI but should work on 386BSD. */
+#define SIGTRAMP_START(pc) 0xfdbfdfc0
+#define SIGTRAMP_END(pc) 0xfdbfe000
+
+/* Saved Pc. Get it from sigcontext if within sigtramp. */
+
+/* Offset to saved PC in sigcontext, from <sys/signal.h>. */
+#define SIGCONTEXT_PC_OFFSET 20
+
+#define BELIEVE_PCC_PROMOTION 1
+
+#endif /* #ifndef TM_I386OS9K_H */