[PATCH] Add OpenBSD-m88k support

[Marc Espie <espie at schutzenberger dot liafa dot jussieu dot fr>]

Here are the configuration files for an OpenBSD m88k target.
There are still some problems with OpenBSD m88k, but I am not
sure whether gcc m88k is working perfectly yet.

The configure support has already been there for a while.
This might entice some people into looking at m88k support more
closely.

Wed Jun 28 00:21:56 CEST 2000	Marc Espie <espie@openbsd.org>
	* config/m88k/openbsd.h: New.
	* config/m88k/xm-openbsd.h: New.

*** /dev/null	Tue Jun 27 23:50:09 2000
--- gcc/config/m88k/openbsd.h	Tue Jun 27 21:40:00 2000
***************
*** 0 ****
--- 1,79 ----
+ /* Configuration file for an m88k OpenBSD target.
+    Copyright (C) 2000 Free Software Foundation, Inc.
+ 
+ This file is part of GNU CC.
+ 
+ GNU CC 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, or (at your option)
+ any later version.
+ 
+ GNU CC 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 GNU CC; see the file COPYING.  If not, write to
+ the Free Software Foundation, 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.  */
+ 
+ /* a.out with DBX. */
+ #define DBX_DEBUGGING_INFO
+ #define DEFAULT_GDB_EXTENSIONS 0
+ 
+ #include <aoutos.h>
+ #include <m88k/m88k.h>
+ #include <openbsd.h>
+ 
+ /* Identify the compiler.  */
+ #undef  VERSION_INFO1
+ #define VERSION_INFO1 "Motorola m88k, "
+ 
+ /* Macros to be automatically defined.  */
+ #define CPP_PREDEFINES \
+     "-D__m88k__ -D__unix__ -D__OpenBSD__ -D__CLASSIFY_TYPE__=2 -Asystem(unix) -Asystem(OpenBSD) -Acpu(m88k) -Amachine(m88k)"
+ 
+ /* If -m88000 is in effect, add -Dmc88000; similarly for -m88100 and -m88110.
+    However, reproduce the effect of -Dmc88100 previously in CPP_PREDEFINES.
+    Here, the CPU_DEFAULT is assumed to be -m88100.  */
+ #undef	CPP_SPEC
+ #define	CPP_SPEC "%{m88000:-D__mc88000__} \
+ 		  %{!m88000:%{m88100:%{m88110:-D__mc88000__}}} \
+ 		  %{!m88000:%{!m88100:%{m88110:-D__mc88110__}}} \
+ 		  %{!m88000:%{!m88110:%{!ansi:%{traditional:-Dmc88100}} \
+ 		  -D__mc88100__ -D__mc88100}} %{posix:-D_POSIX_SOURCE} \
+ 		  %{pthread:-D_POSIX_THREADS}"
+ 
+ /* For the Omron Luna/88k, a float function returns a double in traditional
+    mode (and a float in ansi mode).  */
+ #undef TRADITIONAL_RETURN_FLOAT
+ 
+ /* Layout of source language data types. */
+ 
+ /* This must agree with <machine/ansi.h> */
+ #undef SIZE_TYPE
+ #define SIZE_TYPE "unsigned int"
+ 
+ #undef PTRDIFF_TYPE
+ #define PTRDIFF_TYPE "int"
+ 
+ #undef WCHAR_TYPE
+ #define WCHAR_TYPE "int"
+ 
+ #undef WCHAR_TYPE_SIZE
+ #define WCHAR_TYPE_SIZE 32
+ 
+ /* Every structure or union's size must be a multiple of 2 bytes.  */
+ #undef STRUCTURE_SIZE_BOUNDARY
+ #define STRUCTURE_SIZE_BOUNDARY 16 
+ 
+ /* Stack & calling: aggregate returns. */
+ 
+ /* Don't default to pcc-struct-return, because gcc is the only compiler, and
+    we want to retain compatibility with older gcc versions.  */
+ #define DEFAULT_PCC_STRUCT_RETURN 0
+ 
+ #undef SET_ASM_OP
+ #define SET_ASM_OP	".def"   
+ 
*** /dev/null	Tue Jun 27 23:50:09 2000
--- gcc/config/m88k/xm-openbsd.h	Tue Jun 27 21:40:00 2000
***************
*** 0 ****
--- 1,26 ----
+ /* Configuration file for an host running m88k OpenBSD.
+    Copyright (C) 2000 Free Software Foundation, Inc.
+ 
+ This file is part of GNU CC.
+ 
+ GNU CC 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, or (at your option)
+ any later version.
+ 
+ GNU CC 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 GNU CC; see the file COPYING.  If not, write to
+ the Free Software Foundation, 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.  */
+ 
+ #include <xm-openbsd.h>
+ #include <m88k/xm-m88k.h>
+ 
+ /* Remove base m88k idiosyncrasies. */
+ #undef USG
+ #undef NO_SYS_SIGLIST