[commit] Basic OpenBSD/arm support

[Mark Kettenis <mark dot kettenis at xs4all dot nl>]

This patch adds basic OpenBSD/arm support, egtting things ready to add
OpenBSD-specific target code.

Committed,

Mark

Index: ChangeLog
from  Mark Kettenis  <kettenis@gnu.org>

	* armobsd-tdep.c: New file.
	* Makefile.in (ALLDEPFILES): Add armobsd-tdep.c.
	(armobsd-tdep.o): New dependency.
	* config/arm/obsd.mt: New file.
	* configure.tgt: (arm*-*-openbsd*): Set gdb_target to obsd.

Index: armobsd-tdep.c
===================================================================
RCS file: armobsd-tdep.c
diff -N armobsd-tdep.c
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ armobsd-tdep.c 16 Jul 2006 15:21:53 -0000
@@ -0,0 +1,50 @@
+/* Target-dependent code for OpenBSD/arm.
+
+   Copyright (C) 2006 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., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.  */
+
+#include "defs.h"
+#include "osabi.h"
+
+#include "arm-tdep.h"
+#include "solib-svr4.h"
+
+static void
+armobsd_init_abi (struct gdbarch_info info,
+		  struct gdbarch *gdbarch)
+{
+  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+  if (tdep->fp_model == ARM_FLOAT_AUTO)
+    tdep->fp_model = ARM_FLOAT_SOFT_VFP;
+
+  /* OpenBSD/arm uses SVR4-style shared libraries.  */
+  set_solib_svr4_fetch_link_map_offsets
+    (gdbarch, svr4_ilp32_fetch_link_map_offsets);
+
+  tdep->jb_pc = 24;
+  tdep->jb_elt_size = 4;
+}
+
+void
+_initialize_armobsd_tdep (void)
+{
+  gdbarch_register_osabi (bfd_arch_arm, 0, GDB_OSABI_OPENBSD_ELF,
+			  armobsd_init_abi);
+}
Index: Makefile.in
===================================================================
RCS file: /cvs/src/src/gdb/Makefile.in,v
retrieving revision 1.828
diff -u -p -r1.828 Makefile.in
--- Makefile.in 15 Jul 2006 21:22:51 -0000 1.828
+++ Makefile.in 16 Jul 2006 15:21:55 -0000
@@ -1418,7 +1418,7 @@ ALLDEPFILES = \
 	amd64-linux-nat.c amd64-linux-tdep.c \
 	amd64-sol2-tdep.c \
 	arm-linux-nat.c arm-linux-tdep.c arm-tdep.c \
-	armnbsd-nat.c armnbsd-tdep.c \
+	armnbsd-nat.c armnbsd-tdep.c armobsd-tdep.c \
 	avr-tdep.c \
 	bsd-uthread.c bsd-kvm.c \
 	coff-solib.c \
@@ -1783,6 +1783,8 @@ armnbsd-nat.o: armnbsd-nat.c $(defs_h) $
 	$(regcache_h) $(target_h) $(gdb_string_h) $(arm_tdep_h) $(inf_ptrace_h)
 armnbsd-tdep.o: armnbsd-tdep.c $(defs_h) $(osabi_h) $(gdb_string_h) \
 	$(arm_tdep_h) $(solib_svr4_h)
+armobsd-tdep.o: armobsd-tdep.c $(defs_h) $(osabi_h) \
+	$(arm_tdep_h) $(solib_svr4_h)
 arm-tdep.o: arm-tdep.c $(defs_h) $(frame_h) $(inferior_h) $(gdbcmd_h) \
 	$(gdbcore_h) $(gdb_string_h) $(dis_asm_h) $(regcache_h) \
 	$(doublest_h) $(value_h) $(arch_utils_h) $(osabi_h) \
Index: configure.tgt
===================================================================
RCS file: /cvs/src/src/gdb/configure.tgt,v
retrieving revision 1.174
diff -u -p -r1.174 configure.tgt
--- configure.tgt 10 Jul 2006 19:40:27 -0000 1.174
+++ configure.tgt 16 Jul 2006 15:21:55 -0000
@@ -58,7 +58,7 @@ arm*-*-linux*)		gdb_target=linux
 arm*-*-netbsd* | arm*-*-knetbsd*-gnu)
 			gdb_target=nbsd ;;
 arm-*-nto*)		gdb_target=nto ;;
-arm*-*-openbsd*)	gdb_target=nbsd ;;
+arm*-*-openbsd*)	gdb_target=obsd ;;
 arm*-*-* | thumb*-*-* | strongarm*-*-*)
 			gdb_target=embed
 			build_rdi_share=yes
Index: config/arm/obsd.mt
===================================================================
RCS file: config/arm/obsd.mt
diff -N config/arm/obsd.mt
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ config/arm/obsd.mt 16 Jul 2006 15:21:55 -0000
@@ -0,0 +1,2 @@
+# Target: OpenBSD/arm
+TDEPFILES= arm-tdep.o armobsd-tdep.o solib.o solib-svr4.o