Re: AM33/2.0 support for mn10300-elf

[Alexandre Oliva <aoliva at redhat dot com>]

On Jul 10, 2003, Alexandre Oliva <aoliva@redhat.com> wrote:

> This patch introduces support for AM33/2.0, that adds a
> single-precision floating-point unit to AM33.  The GCC and binutils
> corresponding patches are already in the corresponding CVS trees;
> newlib has just been posted for review.  Ok to install?

And this is the patch that introduces am33_2.0-unknown-linux-gnu
support in GDB.  Ok?

Index: sim/ChangeLog
from  Alexandre Oliva  <aoliva@redhat.com>

	2001-08-07  Michael Keezer <mkeezer@redhat.com>
	* configure.in (target): Add am33_2.0 to mn10300 case
	* configure: Rebuild.

Index: sim/configure
===================================================================
RCS file: /cvs/uberbaum/sim/configure,v
retrieving revision 1.10
diff -u -p -r1.10 configure
--- sim/configure 13 Apr 2003 16:44:57 -0000 1.10
+++ sim/configure 10 Jul 2003 04:13:00 -0000
@@ -1441,7 +1441,7 @@ case "${target}" in
 	only_if_gcc=yes
 	extra_subdirs="${extra_subdirs} igen"
 	;;
-  mn10300*-*-*)
+  mn10300*-*-* | am33_2.0*-*-*)
 	# The mn10300 simulator can only be compiled by gcc.
 	sim_target=mn10300
 	only_if_gcc=yes
Index: sim/configure.in
===================================================================
RCS file: /cvs/uberbaum/sim/configure.in,v
retrieving revision 1.11
diff -u -p -r1.11 configure.in
--- sim/configure.in 13 Apr 2003 16:44:57 -0000 1.11
+++ sim/configure.in 10 Jul 2003 04:13:00 -0000
@@ -80,7 +80,7 @@ case "${target}" in
 	only_if_gcc=yes
 	extra_subdirs="${extra_subdirs} igen"
 	;;
-  mn10300*-*-*)
+  mn10300*-*-* | am33_2.0*-*-*)
 	# The mn10300 simulator can only be compiled by gcc.
 	sim_target=mn10300
 	only_if_gcc=yes
Index: gdb/ChangeLog
from  Alexandre Oliva  <aoliva@redhat.com>

	2002-02-25  Jackie Smith Cashion  <jsmith@redhat.com>
	* configure.tgt (am33_2.0*-*-*_): Remove unused target.
	From Kevin Buettner <kevinb@redhat.com>:
	* configure.tgt (am33_2.0*-*-linux*): New target.
	* mn10300-tdep.c (solib-svr4.h): Include.
	(mn10300_linux_svr4_fetch_link_map_offsets): New function.
	* config/mn10300/linux.mt: New file.
	* config/mn10300/tm-linux.h: New file.
	2001-08-07  Michael Keezer <mkeezer@redhat.com>
	* configure.tgt: put blank line after target_cpu case.
	2001-08-07  Michael Keezer <mkeezer@redhat.com>
	* configure.tgt: Add am33_2.0 target_cpu & target.

Index: gdb/configure.tgt
===================================================================
RCS file: /cvs/uberbaum/gdb/configure.tgt,v
retrieving revision 1.107
diff -u -p -r1.107 configure.tgt
--- gdb/configure.tgt 13 Jun 2003 17:49:49 -0000 1.107
+++ gdb/configure.tgt 10 Jul 2003 04:13:37 -0000
@@ -12,6 +12,7 @@
 
 case "${target_cpu}" in
 
+am33_2.0*)              gdb_target_cpu=mn10300 ;;
 alpha*)			gdb_target_cpu=alpha ;;
 arm*)			gdb_target_cpu=arm ;;
 avr*)			gdb_target_cpu=avr ;;
@@ -176,6 +177,7 @@ mips*-*-*)		gdb_target=embed ;;
 
 # OBSOLETE mn10200-*-*)		gdb_target=mn10200 ;;
 mn10300-*-*)		gdb_target=mn10300 ;;
+am33_2.0*-*-linux*)	gdb_target=linux ;;
 
 none-*-*)		gdb_target=none ;;
 
Index: gdb/config/mn10300/linux.mt
===================================================================
RCS file: gdb/config/mn10300/linux.mt
diff -N gdb/config/mn10300/linux.mt
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ gdb/config/mn10300/linux.mt 10 Jul 2003 04:13:39 -0000
@@ -0,0 +1,6 @@
+# Target: Matsushita mn10300 running Linux
+TDEPFILES= mn10300-tdep.o solib.o solib-svr4.o
+TM_FILE= tm-linux.h
+
+SIM_OBS = remote-sim.o
+SIM = ../sim/mn10300/libsim.a
Index: gdb/config/mn10300/tm-linux.h
===================================================================
RCS file: gdb/config/mn10300/tm-linux.h
diff -N gdb/config/mn10300/tm-linux.h
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ gdb/config/mn10300/tm-linux.h 10 Jul 2003 04:13:39 -0000
@@ -0,0 +1,60 @@
+/* Target definitions for Matsushita AM33-2 processor running Linux.
+   Copyright 2002
+   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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* The mn10300 target is fully multi-arched and, therefore, does not have
+   a "tm" file. The mn10300 target does not support Linux shared libraries.
+   At this time shared library support and full multi-arch support are
+   mutually exclusive.
+
+   The AM33-2 target does support Linux shared libraries and, therefore, must
+   be only partially multi-arched. This allows the specification of this "tm"
+   file from which the generic tm-linux.h is included (which, in turn,
+   includes the required solib.h).
+
+   Notice that gdb/configure.tgt sets the following:
+
+   target_cpu == mn10300:      target_cpu == am33_2.0*-*-linux*:
+     gdb_target_cpu=mn10300      gdb_target_cpu=mn10300
+     gdb_target=mn10300          gdb_target=linux
+   gdb_target == mn10300:      gdb_target == linux:
+     gdb_multi_arch=yes          gdb_multi_arch=<undefined>
+
+This causes the mn10300 target to look in gdb/config/mn10300 for mn10300.mt
+and specifies that this target is fully multi-arched. And it causes the AM33-2
+target to look in that same directory for linux.mt. Since gdb_multi_arch is
+not defined for this target, linux.mt can specify the TM_FILE symbol pointing
+to gdb/config/mn10300/tm-linux.h (this file). */
+
+/* Pull in generic linux definitions.  */
+#include "tm-linux.h"
+
+/* Set the multi-arch level to "partial". */
+#define GDB_MULTI_ARCH 1
+
+/* Use target_specific function to define link map offsets.
+   Specify this function here with a #define instead of calling
+   set_solib_svr4_fetch_link_map_offsets in mn10300_gdbarch_init.
+   This keeps this functionality isolated to the am33_2.0-linux-gnu target.
+   mn10300-elf targets cannot call set_solib_svr4_fetch_link_map_offsets
+   because solib-svr4.c is not linked in for them. */
+
+extern struct link_map_offsets *mn10300_linux_svr4_fetch_link_map_offsets (void);
+#define SVR4_FETCH_LINK_MAP_OFFSETS() mn10300_linux_svr4_fetch_link_map_offsets ()

-- 
Alexandre Oliva   Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer                 aoliva@{redhat.com, gcc.gnu.org}
CS PhD student at IC-Unicamp        oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist                Professional serial bug killer