Configuration for powerpc-xilinx-eabi

[Michael Eager <eager at eagercon dot com>]

The attached patch adds configuration-specific
options for --target=powerpc-xilinx-eabi.

--
Michael Eager	 eager@eagercon.com
1960 Park Blvd., Palo Alto, CA 94306  650-325-8077

2009-01-22  Michael Eager <eager@eagercon.com>

	* config/rs6000/rs6000-c.c: generate defines if rs6000_xilinx_fpu:
	_XFPU, _XFPU_SP_LITE, _XFPU_SP_FULL, _XFPU_DP_LITE, _XFPU_DP_FULL
	* config/rs6000/xilinx.h: New.  Spec for powerpc-xilinx-eabi
	* config.gcc: add include for xilinx.h, remove duplicate config

diff -urNp --exclude '*.swp' --exclude DEV-PHASE --exclude .svn gcc-orig/gcc/config/rs6000/rs6000-c.c gcc/gcc/config/rs6000/rs6000-c.c
--- gcc-orig/gcc/config/rs6000/rs6000-c.c	2009-01-21 11:48:21.000000000 -0800
+++ gcc/gcc/config/rs6000/rs6000-c.c	2009-01-21 11:49:15.000000000 -0800
@@ -335,6 +335,26 @@ rs6000_cpu_cpp_builtins (cpp_reader *pfi
   /* Let the compiled code know if 'f' class registers will not be available.  */
   if (TARGET_SOFT_FLOAT || !TARGET_FPRS)
     builtin_define ("__NO_FPRS__");
+
+  /* Generate defines for Xilinx FPU. */
+  if (rs6000_xilinx_fpu) 
+    {
+      builtin_define ("_XFPU");
+      if (rs6000_single_float && ! rs6000_double_float)
+	{
+	  if (rs6000_simple_fpu) 
+	    builtin_define ("_XFPU_SP_LITE"); 
+	  else 
+	    builtin_define ("_XFPU_SP_FULL");
+	}
+      if (rs6000_double_float)
+	{
+	  if (rs6000_simple_fpu) 
+	    builtin_define ("_XFPU_DP_LITE");
+	  else
+	    builtin_define ("_XFPU_DP_FULL");
+        }
+    }
 }
 
 
diff -urNp --exclude '*.swp' --exclude DEV-PHASE --exclude .svn gcc-orig/gcc/config/rs6000/xilinx.h gcc/gcc/config/rs6000/xilinx.h
--- gcc-orig/gcc/config/rs6000/xilinx.h	1969-12-31 16:00:00.000000000 -0800
+++ gcc/gcc/config/rs6000/xilinx.h	2009-01-21 11:49:15.000000000 -0800
@@ -0,0 +1,38 @@
+/* Support for GCC on Xilinx embedded PowerPC systems
+   Copyright (C) 2008 Free Software Foundation, Inc.
+   Contributed by Michael Eager, eager@eagercon.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 3, 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 COPYING3.  If not see
+   <http://www.gnu.org/licenses/>.  */
+
+/* Set defaults for Xilinx embedded target boards. */
+
+#undef	LIB_DEFAULT_SPEC
+#define LIB_DEFAULT_SPEC "\
+%{!nostdlib: --start-group -lxil -lc -lm --end-group   \
+%{mppcperflib: %{mfpu=*: -lppcstr405 -lgcc}            \
+%{!mfpu=*: -lppcstr405 -lppcfp -lgcc}}                 \
+%{!mppcperflib: -lgcc}}"
+
+#undef	STARTFILE_DEFAULT_SPEC
+#define STARTFILE_DEFAULT_SPEC "\
+ecrti.o%s %{pg: %{!mno-clearbss: xil-pgcrt0.o%s} \
+%{mno-clearbss: xil-sim-pgcrt0.o%s}}            \
+%{!pg: %{!mno-clearbss: xil-crt0.o%s}           \
+%{mno-clearbss: xil-sim-crt0.o%s}} crtbegin.o%s"
+
+#undef	LINK_START_DEFAULT_SPEC
+#define LINK_START_DEFAULT_SPEC "-T xilinx.ld%s"
diff -urNp --exclude '*.swp' --exclude DEV-PHASE --exclude .svn gcc-orig/gcc/config.gcc gcc/gcc/config.gcc
--- gcc-orig/gcc/config.gcc	2009-01-21 11:48:29.000000000 -0800
+++ gcc/gcc/config.gcc	2009-01-21 11:50:45.000000000 -0800
@@ -1789,7 +1789,7 @@ powerpc-*-eabialtivec*)
 	tmake_file="rs6000/t-fprules rs6000/t-fprules-fpbit rs6000/t-ppcendian rs6000/t-ppccomm"
 	;;
 powerpc-xilinx-eabi*)
-	tm_file="${tm_file} dbxelf.h elfos.h usegas.h svr4.h freebsd-spec.h rs6000/sysv4.h rs6000/eabi.h rs6000/singlefp.h"
+	tm_file="${tm_file} dbxelf.h elfos.h usegas.h svr4.h freebsd-spec.h rs6000/sysv4.h rs6000/eabi.h rs6000/singlefp.h rs6000/xfpu.h rs6000/xilinx.h"
 	extra_options="${extra_options} rs6000/sysv4.opt"
 	tmake_file="rs6000/t-fprules rs6000/t-fprules-fpbit rs6000/t-ppcgas rs6000/t-ppccomm"
 	;;
@@ -1896,11 +1896,6 @@ powerpcle-*-eabi*)
 	tmake_file="rs6000/t-fprules rs6000/t-fprules-fpbit rs6000/t-ppcgas rs6000/t-ppccomm"
 	extra_options="${extra_options} rs6000/sysv4.opt"
 	;;
-powerpc-xilinx-eabi*)
- 	tm_file="${tm_file} dbxelf.h elfos.h usegas.h svr4.h freebsd-spec.h rs6000/sysv4.h rs6000/eabi.h rs6000/singlefp.h rs6000/xfpu.h"
-  	extra_options="${extra_options} rs6000/sysv4.opt"
-  	tmake_file="rs6000/t-fprules rs6000/t-fprules-fpbit rs6000/t-ppcgas rs6000/t-ppccomm"
-  	;;
 rs6000-ibm-aix4.[12]* | powerpc-ibm-aix4.[12]*)
 	tm_file="${tm_file} rs6000/aix.h rs6000/aix41.h rs6000/xcoff.h"
 	tmake_file="rs6000/t-fprules rs6000/t-fprules-fpbit rs6000/t-newas"