config.gcc: Add crx-elf support.

        * config.gcc: Add crx-elf support.

        * doc/contrib.texi: Mention crx.
        * doc/extend.texi: Document crx extensions.
        * doc/install.texi: Document crx install.
        * doc/invoke.texi: Document crx options.
        * doc/md.texi: Document crx constraints.

        * config/crx/crx-protos.h: New file.
        * config/crx/crx.c: New file.
        * config/crx/crx.h: New file.
        * config/crx/crx.md: New file.
        * config/crx/crx.opt: New file.
        * config/crx/t-crx: New file.

From-SVN: r102278

gcc/ChangeLog

+2005-07-22  Paul Woegerer  <paul.woegerer@nsc.com>
+
+	* config.gcc: Add crx-elf support.
+
+	* doc/contrib.texi: Mention crx.
+	* doc/extend.texi: Document crx extensions.
+	* doc/install.texi: Document crx install.
+	* doc/invoke.texi: Document crx options.
+	* doc/md.texi: Document crx constraints.
+
+	* config/crx/crx-protos.h: New file.
+	* config/crx/crx.c: New file.
+	* config/crx/crx.h: New file.
+	* config/crx/crx.md: New file.
+	* config/crx/crx.opt: New file.
+	* config/crx/t-crx: New file.
+	
 2005-07-22  Manfred Hollstein  <mh@suse.com>
 
 	* tree-ssa-structalias.c (merge_graph_nodes): Fix uninitialised

gcc/config.gcc

@@ -779,6 +779,11 @@ cris-*-linux*)
 	tmake_file="cris/t-cris t-slibgcc-elf-ver cris/t-linux"
 	extra_options="${extra_options} cris/linux.opt"
 	;;
+crx-*-elf)
+	tm_file="elfos.h ${tm_file}"
+	extra_parts="crtbegin.o crtend.o"
+	use_collect2=no
+	;;
 fr30-*-elf)
 	tm_file="dbxelf.h elfos.h svr4.h ${tm_file}"
 	tmake_file=fr30/t-fr30

gcc/config/crx/crx-protos.h

+/* Prototypes for exported functions defined in crx.c
+   Copyright (C) 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
+   2002, 2003, 2004  Free Software Foundation, Inc.
+
+   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.  */
+
+#ifndef GCC_CRX_PROTOS_H
+#define GCC_CRX_PROTOS_H
+
+
+/* Register usage. */
+extern enum reg_class crx_regno_reg_class (int);
+extern int crx_hard_regno_mode_ok (int regno, enum machine_mode);
+#ifdef RTX_CODE
+extern enum reg_class crx_secondary_reload_class (enum reg_class, enum machine_mode, rtx);
+#endif /* RTX_CODE */
+
+/* Passing function arguments.  */
+extern int crx_function_arg_regno_p (int);
+#ifdef TREE_CODE
+extern void crx_function_arg_advance (CUMULATIVE_ARGS *, enum machine_mode, tree, int);
+#ifdef RTX_CODE
+extern void crx_init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx);
+extern rtx crx_function_arg (struct cumulative_args *, enum machine_mode, tree, int);
+#endif /* RTX_CODE */
+#endif /* TREE_CODE */
+
+#ifdef RTX_CODE
+/* Addressing Modes.  */
+extern int crx_legitimate_address_p (enum machine_mode, rtx, int);
+
+extern int crx_const_double_ok (rtx op);
+
+/* Instruction output.  */
+extern void crx_print_operand (FILE *, rtx, int);
+extern void crx_print_operand_address (FILE *, rtx);
+
+/* Misc functions called from crx.md.  */
+extern rtx crx_expand_compare (enum rtx_code, enum machine_mode);
+extern void crx_expand_branch (enum rtx_code, rtx);
+extern void crx_expand_scond (enum rtx_code, rtx);
+
+extern void crx_expand_movmem_single (rtx, rtx, rtx, rtx, rtx, unsigned HOST_WIDE_INT *);
+extern int crx_expand_movmem (rtx, rtx, rtx, rtx);
+#endif /* RTX_CODE */
+
+/* Routines to compute costs.  */
+extern int crx_memory_move_cost (enum machine_mode, enum reg_class, int);
+
+/* Prologue/Epilogue functions.  */
+extern int crx_initial_elimination_offset (int, int);
+extern char *crx_prepare_push_pop_string (int);
+extern void crx_expand_prologue (void);
+extern void crx_expand_epilogue (void);
+
+
+/* Handling the "interrupt" attribute */
+extern int crx_interrupt_function_p (void);
+
+#endif /* GCC_CRX_PROTOS_H */

gcc/config/crx/crx.opt

+; Options for the National Semiconductor CRX port of the compiler.
+
+; Copyright (C) 2005 Free Software Foundation, Inc.
+;
+; 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, 51 Franklin Street, Fifth Floor, Boston, MA
+; 02110-1301, USA.
+
+mmac
+Target Report Mask(MAC)
+Support multiply accumulate instructions
+
+mno-push-args
+Target Report RejectNegative Mask(NO_PUSH_ARGS)
+Do not use push to store function arguments

gcc/config/crx/t-crx

+# CRX Target Makefile
+
+# Mingw specific compilation fixes
+USE_COLLECT2 =
+STMP_FIXINC =
+
+# Software emulation for integer div and mod
+LIB2FUNCS_EXTRA = $(srcdir)/config/udivmodsi4.c $(srcdir)/config/udivmod.c $(srcdir)/config/divmod.c
+
+# Build the floating point emulation libraries.
+FPBIT = fp-bit.c
+DPBIT = dp-bit.c
+
+fp-bit.c: $(srcdir)/config/fp-bit.c
+	echo '#define FLOAT' > fp-bit.c
+	cat $(srcdir)/config/fp-bit.c >> fp-bit.c
+
+dp-bit.c: $(srcdir)/config/fp-bit.c
+	cat $(srcdir)/config/fp-bit.c > dp-bit.c