Extract Linux-specific portitions of cris-tdep.c to a new file.

This brings in some standard functionality hitherdo missing from
the CRIS/CRISv32 port thanks to the new call to gdbarch_init_osabi,
as well as clearly showing that there is Linux support for this
platform by virtue of the existence of a cris-linux-tdep.c file.

2013-09-06  Ricard Wanderlof  <ricardw@axis.com>

	* Makefile.in (ALL_TARGET_OBS): Add cris-linux-tdep.o.
	* configure.tgt: Add cris-linux-tdep.o and linux-tdep.o to
	gdb_target_obs for cris target.
	* cris-tdep.c (struct gdbarch_tdep): Move to cris-tdep.h.
	(cris_gdbarch_init): Move calls to
	set_gdbarch_fetch_tls_load_module_address and
	set_solib_svr4_fetch_link_map_offsets to cris-linux-tdep.c.
	Add call to gdbarch_init_osabi.
	* cris-linux-tdep.c: New file.
	* cris-tdep.h: New file.

1 files changed, 57 insertions, 0 deletions

diff --git a/gdb/cris-linux-tdep.c b/gdb/cris-linux-tdep.c
new file mode 100644
index 0000000..ea6e2f0
--- /dev/null
+++ b/gdb/cris-linux-tdep.c
@@ -0,0 +1,57 @@
+/* Target-dependent code for GNU/Linux on CRIS processors, for GDB.
+
+   Copyright (C) 2001-2013 Free Software Foundation, Inc.
+
+   Contributed by Axis Communications AB.
+   Written by Hendrik Ruijter, Stefan Andersson, Orjan Friberg,
+   Edgar Iglesias and Ricard Wanderlof.
+
+   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 3 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, see <http://www.gnu.org/licenses/>.  */
+
+#include "defs.h"
+#include "osabi.h"
+#include "linux-tdep.h"
+#include "solib-svr4.h"
+#include "symtab.h"
+
+#include "cris-tdep.h"
+
+static void
+cris_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
+{
+  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+  linux_init_abi (info, gdbarch);
+
+  if (tdep->cris_version == 32)
+    /* Threaded debugging is only supported on CRISv32 for now.  */
+    set_gdbarch_fetch_tls_load_module_address (gdbarch,
+                                               svr4_fetch_objfile_link_map);
+
+  set_solib_svr4_fetch_link_map_offsets (gdbarch,
+					 svr4_ilp32_fetch_link_map_offsets);
+
+}
+
+/* Provide a prototype to silence -Wmissing-prototypes.  */
+extern initialize_file_ftype _initialize_cris_linux_tdep;
+
+void
+_initialize_cris_linux_tdep (void)
+{
+  gdbarch_register_osabi (bfd_arch_cris, 0, GDB_OSABI_LINUX,
+			  cris_linux_init_abi);
+}