partial PATCH: initial configuration for sparc64-*-openbsd*

[Marc Espie <espie at nerim dot net>]

This is enough to bootstrap C and C++, and is basically an update
of what we use in-tree with gcc 2.95.3.

I'd like some comments, so that I can polish this to a final version.

--- gcc/config.gcc.orig	Thu May  2 23:28:49 2002
+++ gcc/config.gcc	Wed May 29 16:07:03 2002
@@ -3086,6 +3087,11 @@ sparc-*-openbsd*)
 	tmake_file="t-libc-ok t-openbsd sparc/t-openbsd"
 	# we need collect2 until our bug is fixed...
 	use_collect2=yes
+	;;
+sparc64-*-openbsd*)
+	tm_file="sparc/openbsd1-64.h sparc/sparc.h elfos.h svr4.h sparc/sysv4.h sparc/sol2.h sparc/sp64-elf.h openbsd.h sparc/openbsd64.h"
+	xm_file=sparc/xm-sp64.h
+	gas=yes gnu_ld=yes
 	;;
 sparc-*-bsd*)
 	tm_file="${tm_file} sparc/bsd.h"
--- gcc/config/sparc/openbsd1-64.h.orig	Wed May 29 16:02:25 2002
+++ gcc/config/sparc/openbsd1-64.h	Wed May 29 16:03:04 2002
@@ -0,0 +1,28 @@
+/* Configuration file for sparc64 OpenBSD target.
+   Copyright (C) 2002 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.  */
+
+#ifndef TARGET_CPU_DEFAULT
+#define TARGET_CPU_DEFAULT	TARGET_CPU_ultrasparc
+#endif
+
+#define OBSD_HAS_DECLARE_FUNCTION_NAME
+#define OBSD_HAS_DECLARE_FUNCTION_SIZE
+#define OBSD_HAS_DECLARE_OBJECT
+
--- gcc/config/sparc/openbsd64.h.orig	Wed May 29 17:36:48 2002
+++ gcc/config/sparc/openbsd64.h	Wed May 29 17:38:38 2002
@@ -0,0 +1,81 @@
+/* Configuration file for sparc64 OpenBSD target.
+   Copyright (C) 2002 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.  */
+
+#undef TARGET_VERSION
+#define TARGET_VERSION fprintf (stderr, " (sparc64 OpenBSD ELF)")
+
+/* A 64 but v9 complier in a Medium/Mid code model.  */
+
+/* XXX - do we really want HARD_QUAD? */
+#undef TARGET_DEFAULT
+#define TARGET_DEFAULT \
+(MASK_V9 + MASK_PTR64 + MASK_64BIT + MASK_HARD_QUAD \
+ + MASK_APP_REGS + MASK_FPU + MASK_STACK_BIAS + MASK_LONG_DOUBLE_128)
+
+#undef SPARC_DEFAULT_CMODEL
+#define SPARC_DEFAULT_CMODEL CM_MEDMID
+
+/* Run-time target specifications.  */
+#undef CPP_PREDEFINES
+#define CPP_PREDEFINES "-D__unix__ -D__sparc__ -D__sparc64__ -D__sparcv9__ -D__sparc_v9__ -D__arch64__ -D__ELF__ -D__OpenBSD__ -Asystem(unix) -Asystem(OpenBSD) -Acpu(sparc) -Amachine(sparc)"
+
+#undef CPP_SUBTARGET_SPEC
+#define CPP_SUBTARGET_SPEC ""
+
+#undef MD_EXEC_PREFIX
+#undef MD_STARTFILE_PREFIX
+
+#undef ASM_SPEC
+#define ASM_SPEC "\
+%{v:-V} -s %{fpic:-K PIC} %{fPIC:-K PIC} \
+%{mlittle-endian:-EL} \
+%(asm_cpu) %(asm_arch) \
+"
+
+/* Layout of source language data types.  */
+#undef WCHAR_TYPE
+#define WCHAR_TYPE "int"
+
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE 32
+
+#undef LONG_DOUBLE_TYPE_SIZE
+#define LONG_DOUBLE_TYPE_SIZE 128
+
+#undef LINK_SPEC
+#define LINK_SPEC \
+  "%{!shared:%{!nostdlib:%{!r*:%{!e*:-e __start}}}} \
+   %{shared:-shared} %{R*} \
+   %{static:-Bstatic} \
+   %{!static:-Bdynamic} \
+   %{assert*} \
+   %{!dynamic-linker:-dynamic-linker /usr/libexec/ld.so}"
+
+/* For profiled binaries we have to change the memory model.  */
+#undef CC1_SPEC
+#define CC1_SPEC "%{p*:-mcmodel=medlow} %{p:-mcmodel=medlow}"
+
+/* As an elf system, we need crtbegin/crtend stuff.  */
+#undef STARTFILE_SPEC
+#define STARTFILE_SPEC "\
+        %{!shared: %{pg:gcrt0%O%s} %{!pg:%{p:gcrt0%O%s} %{!p:crt0%O%s}} \
+        crtbegin%O%s} %{shared:crtbeginS%O%s}"
+#undef ENDFILE_SPEC
+#define ENDFILE_SPEC "%{!shared:crtend%O%s} %{shared:crtendS%O%s}"