First cut at support for all BSD variants on 386.

* tm-i386bsd.h, xm-i386bsd.h:  New config files.
* i386b-nat.c:  New native support file.
* configure.in:  Add host and target for i[34]86-*-bsd*.
* config/i386bsd.mh, config/i386bsd.mt:  New config files.

4 files changed, 139 insertions, 0 deletions

diff --git a/gdb/configure.in b/gdb/configure.in
index be42189..93daaa2 100644
--- a/gdb/configure.in
+++ b/gdb/configure.in
@@ -20,6 +20,7 @@ hppa*-hp-hpux)		gdb_host=hppahpux ;;
 i[34]86-ncr-*)		gdb_host=ncr3000 ;;
 i[34]86-sequent-*)	gdb_host=symmetry ;;
 
+i[34]86-*-bsd*)		gdb_host=i386bsd ;;
 i[34]86-*-go32)		gdb_host=go32 ;;
 i[34]86-*-linux)	gdb_host=linux ;;
 i[34]86-*-mach)		gdb_host=i386mach ;;
@@ -132,6 +133,7 @@ i[34]86-*-aout)		gdb_target=i386aout ;;
 i[34]86-*-coff)		gdb_target=i386v ;;
 i[34]86-*-elf)		gdb_target=i386v ;;
 
+i[34]86-*-bsd*)		gdb_target=i386bsd ;;
 i[34]86-*-solaris*)	gdb_target=i386sol2 ;;
 i[34]86-*-sunos*)	gdb_target=sun386 ;;
 i[34]86-*-sysv4*)	gdb_target=i386v4 ;;
diff --git a/gdb/i386b-nat.c b/gdb/i386b-nat.c
new file mode 100644
index 0000000..5c1ca07
--- /dev/null
+++ b/gdb/i386b-nat.c
@@ -0,0 +1,59 @@
+/* 386BSD host interface.
+   Copyright (C) 1988, 1989, 1991 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.  */
+
+#include "defs.h"
+
+#include <machine/reg.h>
+
+
+/* this table must line up with REGISTER_NAMES in tm-i386.h */
+/* symbols like 'tEAX' come from <machine/reg.h> */
+static int tregmap[] = 
+{
+  tEAX, tECX, tEDX, tEBX,
+  tESP, tEBP, tESI, tEDI,
+  tEIP, tEFLAGS, tCS, tSS
+};
+static int sregmap[] = 
+{
+  sEAX, sECX, sEDX, sEBX,
+  sESP, sEBP, sESI, sEDI,
+  sEIP, sEFLAGS, sCS, sSS
+};
+
+/* blockend is the value of u.u_ar0, and points to the
+   place where ES is stored.  */
+
+int
+i386_register_u_addr (blockend, regnum)
+     int blockend;
+     int regnum;
+{
+  /* The following condition is a kludge to get at the proper register map
+     depending upon the state of pcb_flag.
+     The proper condition would be
+     if (u.u_pcb.pcb_flag & FM_TRAP)
+     but that would require a ptrace call here and wouldn't work
+     for corefiles.  */
+
+  if (blockend < 0x1fcc)
+    return (blockend + 4 * tregmap[regnum]);
+  else
+    return (blockend + 4 * sregmap[regnum]);
+}
diff --git a/gdb/tm-i386bsd.h b/gdb/tm-i386bsd.h
new file mode 100644
index 0000000..65050d2
--- /dev/null
+++ b/gdb/tm-i386bsd.h
@@ -0,0 +1,34 @@
+/* Macro definitions for i386 running under BSD Unix.
+   Copyright 1986, 1987, 1989, 1991, 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.  */
+
+/* Override number of expected traps from sysv. */
+#define START_INFERIOR_TRAPS_EXPECTED 2
+
+/* Most definitions from sysv could be used. */
+#include "tm-i386v.h"
+
+/* Define this if the C compiler puts an underscore at the front
+   of external names before giving them to the linker.  */
+#define NAMES_HAVE_UNDERSCORE
+
+#undef FLOAT_INFO	/* No float info yet */
+
+/* 386BSD cannot handle the segment registers. */
+#undef NUM_REGS
+#define NUM_REGS 12
diff --git a/gdb/xm-i386bsd.h b/gdb/xm-i386bsd.h
new file mode 100644
index 0000000..68a8196
--- /dev/null
+++ b/gdb/xm-i386bsd.h
@@ -0,0 +1,44 @@
+/* Macro definitions for Intel 386 running BSD Unix, for GDB.
+   Copyright 1986, 1987, 1989, 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.  */
+
+#define HOST_BYTE_ORDER LITTLE_ENDIAN
+
+/* Avoid "INT_MIN redefined" warnings -- by defining it here, exactly
+   the same as in the system <machine/limits.h> file.  */
+#undef	INT_MIN
+#define	INT_MIN		0x80000000	/* min value for an int */
+
+/* Get rid of any system-imposed stack limit if possible.  */
+
+#define SET_STACK_LIMIT_HUGE
+
+/* This is the amount to subtract from u.u_ar0
+   to get the offset in the core file of the register values.  */
+
+#include <machine/vmparam.h>
+#define KERNEL_U_ADDR USRSTACK
+
+#define REGISTER_U_ADDR(addr, blockend, regno) \
+	(addr) = i386_register_u_addr ((blockend),(regno));
+
+extern int
+i386_register_u_addr PARAMS ((int, int));
+
+#define PSIGNAL_IN_SIGNAL_H
+#define PTRACE_ARG3_TYPE char*