patch: ppc-e500 linux target

[Aldy Hernandez <aldyh at redhat dot com>]

This adds preliminary support for an E500 linux target.

Mostly untested, except building cc1.  Definitely not bootstrappable 
yet.

Committed to mainline.

[Zack, would you like me to commit this to the E500 branch?]

2003-05-06  Aldy Hernandez  <aldyh@redhat.com>

	* config/rs6000/linuxspe.h: New file.

	* config.gcc: Add powerpc-*-linux-gnuspe* target.

Index: config/rs6000/linuxspe.h
===================================================================
RCS file: config/rs6000/linuxspe.h
diff -N config/rs6000/linuxspe.h
*** /dev/null	1 Jan 1970 00:00:00 -0000
--- config/rs6000/linuxspe.h	6 May 2003 19:10:12 -0000
***************
*** 0 ****
--- 1,58 ----
+ /* Definitions of target machine for GNU compiler,
+    for PowerPC e500 machines running GNU/Linux.
+    Copyright (C) 2003 Free Software Foundation, Inc.
+    Contributed by Aldy Hernandez (aldy@quesejoda.com).
+
+    This file is part of GCC.
+
+    GCC 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.
+
+    GCC 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 GCC; 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, " (PowerPC E500 GNU/Linux)");
+
+ /* Override rs6000.h and sysv4.h definition.  */
+ #undef	TARGET_DEFAULT
+ #define	TARGET_DEFAULT (MASK_POWERPC | MASK_NEW_MNEMONICS)
+
+ #undef  SUBSUBTARGET_OVERRIDE_OPTIONS
+ #define SUBSUBTARGET_OVERRIDE_OPTIONS \
+   if (rs6000_select[1].string == NULL) \
+     rs6000_cpu = PROCESSOR_PPC8540; \
+   if (rs6000_abi_string == NULL || strstr (rs6000_abi_string, "spe") 
== NULL) \
+     rs6000_spe_abi = 1; \
+   if (rs6000_float_gprs_string == NULL) \
+     rs6000_float_gprs = 1; \
+   /* See note below.  */ \
+   /*if (rs6000_long_double_size_string == NULL)*/ \
+   /*  rs6000_long_double_type_size = 128;*/ \
+   if (rs6000_spe_string == NULL) \
+     rs6000_spe = 1; \
+   if (rs6000_isel_string == NULL) \
+     rs6000_isel = 1
+
+ /* The e500 ABI says that either long doubles are 128 bits, or if
+    implemented in any other size, the compiler/linker should error 
out.
+    We have no emulation libraries for 128 bit long doubles, and I hate
+    the dozens of failures on the regression suite.  So I'm breaking 
ABI
+    specifications, until I properly fix the emulation.
+
+    Enable these later.
+ #undef CPP_LONGDOUBLE_DEFAULT_SPEC
+ #define CPP_LONGDOUBLE_DEFAULT_SPEC "-D__LONG_DOUBLE_128__=1"
+ */
+
+ #undef  ASM_DEFAULT_SPEC
+ #define	ASM_DEFAULT_SPEC "-mppc -mspe -me500"
Index: config.gcc
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config.gcc,v
retrieving revision 1.296
diff -c -p -r1.296 config.gcc
*** config.gcc	1 May 2003 06:18:07 -0000	1.296
--- config.gcc	6 May 2003 19:10:12 -0000
*************** powerpc-*-linux-gnualtivec*)
*** 2049,2054 ****
--- 2049,2058 ----
  	tm_file="${tm_file} dbxelf.h elfos.h svr4.h freebsd-spec.h 
rs6000/sysv4.h rs6000/linux.h rs6000/linuxaltivec.h"
  	tmake_file="rs6000/t-fprules rs6000/t-ppcos t-slibgcc-elf-ver 
t-linux rs6000/t-ppccomm"
  	;;
+ powerpc-*-linux-gnuspe*)
+ 	tm_file="${tm_file} dbxelf.h elfos.h svr4.h freebsd-spec.h 
rs6000/sysv4.h rs6000/linux.h rs6000/linuxspe.h"
+ 	tmake_file="rs6000/t-fprules rs6000/t-ppcos t-slibgcc-elf-ver 
t-linux rs6000/t-ppccomm"
+ 	;;
  powerpc-*-linux*)
  	tm_file="${tm_file} dbxelf.h elfos.h svr4.h freebsd-spec.h 
rs6000/sysv4.h rs6000/linux.h"
  	tmake_file="rs6000/t-fprules rs6000/t-ppcos t-slibgcc-elf-ver 
t-linux rs6000/t-ppccomm"