MAINTAINERS: Add myself as a maintainer for the RX port.

        * MAINTAINERS: Add myself as a maintainer for the RX port.

gcc
        * config.gcc: Add support for RX target.
        * config/rx: New directory.
        * config/rx/constraints.md: New file.
        * config/rx/predicates.md: New file.
        * config/rx/rx.c: New file.
        * config/rx/rx.h: New file.
        * config/rx/rx.md: New file.
        * config/rx/rx.opt: New file.
        * config/rx/rx-protos.h: New file.
        * config/rx/t-rx: New file.
        * doc/extend.texi: Document RX function attributes.
        * doc/invoke.texi: Document RX specific command line options.
        * doc/contrib.texi: Document RX contribution.
        * doc/md.texi: Document RX constraints.
        * doc/install.texi: Document RX support.

libgcc
        * config.host: Add support for RX target.
        * config/rx: New directory.
        * config/rx/rx-abi-functions.c: New file. Supplementary
        functions for libgcc to support the RX ABI.
        * config/rx/rx-abi.h: New file.  Supplementary header file for
        libgcc RX ABI functions.
        * config/rx/t-rx: New file: Makefile fragment for building
        libgcc for the RX.

gcc/testsuite
        * lib/target-supports.exp (check_profiling_available):
        Profiling is not, currently, available for the RX port.
        (check_effective_target_hard_float): Add support for RX
        target.
        * gcc.target/rx: New directory.
        * gcc.target/rx/builtins.c: New test file.
        * gcc.target/rx/interrupts.c: New test file.
        * gcc.target/rx/rx-abi-function-tests.c: New test file.
        * gcc.target/rx/zero-width-bitfield.c: New test file.
        * gcc.target/rx/i272091.c: New test file.
        * gcc.target/rx/packed-struct.c: New test file.
        * gcc.target/rx/rx.exp: New file: Drives RX tests.

From-SVN: r153557

5 files changed, 384 insertions, 0 deletions

diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index e951502..2db5d29 100644
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,3 +1,14 @@
+2009-10-26  Nick Clifton  <nickc@redhat.com>
+
+	* config.host: Add support for RX target.
+	* config/rx: New directory.
+	* config/rx/rx-abi-functions.c: New file. Supplementary
+	functions for libgcc to support the RX ABI.
+	* config/rx/rx-abi.h: New file.  Supplementary header file for
+	libgcc RX ABI functions.
+	* config/rx/t-rx: New file: Makefile fragment for building
+	libgcc for the RX.
+
 2009-10-09  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/i386/32/sfp-machine.h (__FP_FRAC_SUB_4): Change operand
diff --git a/libgcc/config.host b/libgcc/config.host
index 91b7054..f086115 100644
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -482,6 +482,10 @@ rs6000-ibm-aix5.1.* | powerpc-ibm-aix5.1.*)
 	;;
 rs6000-ibm-aix[56789].* | powerpc-ibm-aix[56789].*)
 	;;
+rx-*-elf)
+	extra_parts="crtbegin.o crtend.o"
+	tmake_file="rx/t-rx"
+	;;
 s390-*-linux*)
 	tmake_file="${tmake_file} s390/t-crtstuff s390/t-linux s390/32/t-floattodi"
 	;;
diff --git a/libgcc/config/rx/rx-abi-functions.c b/libgcc/config/rx/rx-abi-functions.c
new file mode 100644
index 0000000..10dd953
--- /dev/null
+++ b/libgcc/config/rx/rx-abi-functions.c
@@ -0,0 +1,90 @@
+/* RX C ABI functions
+   Copyright (C) 2009 Free Software Foundation, Inc.
+   Contributed by Red Hat.
+
+   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.
+
+   Under Section 7 of GPL version 3, you are granted additional
+   permissions described in the GCC Runtime Library Exception, version
+   3.1, as published by the Free Software Foundation.
+
+   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/>.  */
+
+
+/* The RX C ABI includes the specification of a set of compiler support
+   functions.  Libgcc2 includes some of them, although the names have to
+   be changed (see rx-abi.h), and the rest are defined here.
+
+   FIXME: Given that FINE_GRAINED_LIBRARIES is defined we ought to consider
+   compiling this file multiple times with one function per iteration being
+   compiled.  */
+
+#ifdef __RX_64BIT_DOUBLES__
+
+int _COM_CMPLTd (double a, double b) { return __ltdf2 (a, b) == -1; }
+int _COM_CMPGTd (double a, double b) { return __gtdf2 (a, b) == 1; }
+int _COM_CMPLEd (double a, double b) { return __ledf2 (a, b) != 1; }
+int _COM_CMPGEd (double a, double b) { return __gedf2 (a, b) != -1; }
+int _COM_CMPEQd (double a, double b) { return __eqdf2 (a, b) == 0; }
+int _COM_CMPNEd (double a, double b) { return __nedf2 (a, b) != 0; }
+
+int _COM_CMPLTf (double, double) __attribute__ ((weak, alias ("_COM_CMPLTd")));
+int _COM_CMPGTf (double, double) __attribute__ ((weak, alias ("_COM_CMPGTd")));
+int _COM_CMPLEf (double, double) __attribute__ ((weak, alias ("_COM_CMPLEd")));
+int _COM_CMPGEf (double, double) __attribute__ ((weak, alias ("_COM_CMPGEd")));
+int _COM_CMPEQf (double, double) __attribute__ ((weak, alias ("_COM_CMPEQd")));
+int _COM_CMPNEf (double, double) __attribute__ ((weak, alias ("_COM_CMPNEd")));
+
+#else /* 32-bit doubles.  */
+
+double _COM_CONVfd (float a) { return a; }
+float  _COM_CONVdf (double a) { return a; }
+
+int _COM_CMPLTd (double a, double b) __attribute__ ((weak, alias ("_COM_CMPLTf")));
+int _COM_CMPGTd (double a, double b) __attribute__ ((weak, alias ("_COM_CMPGTf")));
+int _COM_CMPLEd (double a, double b) __attribute__ ((weak, alias ("_COM_CMPLEf")));
+int _COM_CMPGEd (double a, double b) __attribute__ ((weak, alias ("_COM_CMPGEf")));
+int _COM_CMPEQd (double a, double b) __attribute__ ((weak, alias ("_COM_CMPEQf")));
+int _COM_CMPNEd (double a, double b) __attribute__ ((weak, alias ("_COM_CMPNEf")));
+
+signed long long   _COM_CONVd64s (double a) { return (signed long long) a; }
+unsigned long long _COM_CONVd64u (double a)  { return (unsigned long long) a; }
+
+int _COM_CMPLTf (float a, float b) { return __ltsf2 (a, b) == -1; }
+int _COM_CMPGTf (float a, float b) { return __gtsf2 (a, b) == 1; }
+int _COM_CMPLEf (float a, float b) { return __lesf2 (a, b) != 1; }
+int _COM_CMPGEf (float a, float b) { return __gesf2 (a, b) != -1; }
+int _COM_CMPEQf (float a, float b) { return __eqsf2 (a, b) == 0; }
+int _COM_CMPNEf (float a, float b) { return __nesf2 (a, b) != 0; }
+
+#endif /* 64-bit vs 32-bit doubles.  */
+
+double _COM_CONV64sd (signed long long a)   { return (double) a; }
+double _COM_CONV64ud (unsigned long long a) { return (double) a; }
+
+extern int __cmpdi2 (long long, long long);
+extern int __ucmpdi2 (long long, long long);
+
+int _COM_CMPLT64s (long long a, long long b) { return __cmpdi2 (a, b)  == 0; }
+int _COM_CMPLT64u (long long a, long long b) { return __ucmpdi2 (a, b) == 0; }
+int _COM_CMPGT64s (long long a, long long b) { return __cmpdi2 (a, b)  == 2; }
+int _COM_CMPGT64u (long long a, long long b) { return __ucmpdi2 (a, b) == 2; }
+int _COM_CMPLE64s (long long a, long long b) { return __cmpdi2 (a, b)  != 2; }
+int _COM_CMPLE64u (long long a, long long b) { return __ucmpdi2 (a, b) != 2; }
+int _COM_CMPGE64s (long long a, long long b) { return __cmpdi2 (a, b)  != 0; }
+int _COM_CMPGE64u (long long a, long long b) { return __ucmpdi2 (a, b) != 0; }
+int _COM_CMPEQ64  (long long a, long long b) { return __cmpdi2 (a, b)  == 1; }
+int _COM_CMPNE64  (long long a, long long b) { return __cmpdi2 (a, b)  != 1; }
+
diff --git a/libgcc/config/rx/rx-abi.h b/libgcc/config/rx/rx-abi.h
new file mode 100644
index 0000000..8a0bbdc
--- /dev/null
+++ b/libgcc/config/rx/rx-abi.h
@@ -0,0 +1,235 @@
+/* Header file for RX ABI versions of libgcc functions.
+   Copyright (C) 2009
+   Free Software Foundation, Inc.
+   Contributed by Red Hat.
+
+   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.
+
+   Under Section 7 of GPL version 3, you are granted additional
+   permissions described in the GCC Runtime Library Exception, version
+   3.1, as published by the Free Software Foundation.
+
+   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/>.  */
+
+/* Make __COM_<RX_NAME> an alias for __<GCC_NAME>.  */
+#define RENAME_LIBRARY(GCC_NAME, RX_NAME)		\
+  __asm__ (".globl\t__COM_" #RX_NAME "\n"		\
+	   ".set\t__COM_" #RX_NAME ", ___" #GCC_NAME "\n");
+
+
+/* The long-long aliases...  */
+
+#ifdef L_muldi3
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (muldi3, MUL64)
+#endif
+
+#ifdef L_divdi3
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (divdi3, DIV64s)
+#endif
+
+#ifdef L_udivdi3
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (udivdi3, DIV64u)
+#endif
+
+#ifdef L_ashldi3
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (ashldi3, SHLL64)
+#endif
+
+#ifdef L_lshrdi3
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (lshrdi3, SHLR64)
+#endif
+
+#ifdef L_ashrdi3
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (ashrdi3, SHAR64)
+#endif
+
+#ifdef L_fixsfdi
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (fixsfdi, CONVf64s)
+#endif
+
+#ifdef L_fixunssfdi
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (fixunssfdi, CONVf64u)
+#endif
+
+#ifdef L_floatdisf
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (floatdisf, CONV64sf)
+#endif
+
+#ifdef L_floatundisf
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (floatundisf, CONV64uf)
+#endif
+
+#ifdef L_moddi3
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (moddi3, MOD64s)
+#endif
+
+#ifdef L_umoddi3
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (umoddi3, MOD64u)
+#endif
+
+
+#ifdef L_si_to_sf
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (floatsisf, CONV32sf)
+#endif
+
+#ifdef L_usi_to_sf
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (floatunsisf, CONV32uf)
+#endif
+
+
+
+#ifdef __RX_64BIT_DOUBLES__
+
+/* Float (32-bit) aliases...  */
+
+#ifdef L_sf_to_si
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (fixsfsi, CONVf32s)
+#endif
+
+#ifdef L_fixunssfsi
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (fixunssfsi, CONVf32u)
+#endif
+
+#ifdef L_addsub_sf
+#define DECLARE_LIBRARY_RENAMES \
+  RENAME_LIBRARY (addsf3, ADDf) \
+  RENAME_LIBRARY (subsf3, SUBf)
+#endif
+
+#ifdef L_mul_sf
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (mulsf3, MULf)
+#endif
+
+#ifdef L_div_sf
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (divsf3, DIVf)
+#endif
+
+/* Double (64-bit) aliases...  */
+
+#ifdef L_addsub_df
+#define DECLARE_LIBRARY_RENAMES \
+  RENAME_LIBRARY (adddf3, ADDd) \
+  RENAME_LIBRARY (subdf3, SUBd)
+#endif
+
+#ifdef L_mul_df
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (muldf3, MULd)
+#endif
+
+#ifdef L_div_df
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (divdf3, DIVd)
+#endif
+
+#ifdef L_fixdfdi
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (fixdfdi, CONVd64s)
+#endif
+
+#ifdef L_fixunsdfdi
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (fixunsdfdi, CONVd64u)
+#endif
+
+#ifdef L_floatdidf
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (floatdisf, CONV64sd)
+#endif
+
+#ifdef L_floatundidf
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (floatdisf, CONV64ud)
+#endif
+
+#ifdef L_df_to_si
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (fixdfsi, CONVd32s)
+#endif
+
+#ifdef L_fixunsdfsi
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (fixunsdfsi, CONVd32u)
+#endif
+
+#ifdef L_si_to_df
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (floatsidf, CONV32sd)
+#endif
+
+#ifdef L_usi_to_df
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (floatunsidf, CONV32ud)
+#endif
+
+#ifdef L_sf_to_df
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (extendsfdf2, CONVfd)
+#endif
+
+#ifdef L_df_to_sf
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (truncdfsf2, CONVdf)
+#endif
+
+#ifdef L_negate_df
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (negdf2, NEGd)
+#endif
+
+/* The 64-bit comparison functions do not have aliases because libgcc2
+   does not provide them.  Instead they have to be supplied in
+   rx-abi-functions.c.  */
+
+
+#else /* 32-bit doubles.  */
+
+
+#ifdef L_addsub_sf
+#define DECLARE_LIBRARY_RENAMES \
+  RENAME_LIBRARY (addsf3, ADDd) \
+  RENAME_LIBRARY (subsf3, SUBd) \
+  RENAME_LIBRARY (addsf3, ADDf) \
+  RENAME_LIBRARY (subsf3, SUBf)
+#endif
+
+#ifdef L_mul_sf
+#define DECLARE_LIBRARY_RENAMES \
+  RENAME_LIBRARY (mulsf3, MULd) \
+  RENAME_LIBRARY (mulsf3, MULf)
+#endif
+
+#ifdef L_div_sf
+#define DECLARE_LIBRARY_RENAMES \
+  RENAME_LIBRARY (divsf3, DIVd) \
+  RENAME_LIBRARY (divsf3, DIVf)
+#endif
+
+#ifdef L_sf_to_si
+#define DECLARE_LIBRARY_RENAMES \
+  RENAME_LIBRARY (fixsfsi, CONVd32s) \
+  RENAME_LIBRARY (fixsfsi, CONVf32s)
+#endif
+
+#ifdef L_fixunssfsi
+#define DECLARE_LIBRARY_RENAMES \
+  RENAME_LIBRARY (fixunssfsi, CONVd32u) \
+  RENAME_LIBRARY (fixunssfsi, CONVf32u)
+#endif
+
+#ifdef L_si_to_sf
+#define DECLARE_LIBRARY_RENAMES \
+  RENAME_LIBRARY (floatsisf, CONV32sd) \
+  RENAME_LIBRARY (floatsisf, CONV32sf)
+#endif
+
+#ifdef L_usi_to_sf
+#define DECLARE_LIBRARY_RENAMES \
+  RENAME_LIBRARY (floatunsisf, CONV32ud) \
+  RENAME_LIBRARY (floatunsisf, CONV32uf)
+#endif
+
+#ifdef L_negate_sf
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (negsf2, NEGd)
+#endif
+
+#endif /* 64-bit vs 32-bit doubles.  */
diff --git a/libgcc/config/rx/t-rx b/libgcc/config/rx/t-rx
new file mode 100644
index 0000000..1e66af0
--- /dev/null
+++ b/libgcc/config/rx/t-rx
@@ -0,0 +1,44 @@
+# Makefile fragment for building LIBGCC for the Renesas RX target.
+# Copyright (C) 2008, 2009 Free Software Foundation, Inc.
+# Contributed by Red Hat.
+#
+# 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/>.
+
+
+# Add functions required by the RX ABI which are not part of
+# the normal libgcc sources:
+
+LIB2ADD = $(srcdir)/config/rx/rx-abi-functions.c
+
+
+# We need special handling of the floating point conversion
+# routines, to allow for the varying size of a double:
+
+FPBIT = fp-bit.c
+$(gcc_objdir)/fp-bit.c: $(gcc_srcdir)/config/fp-bit.c
+	echo '#define FLOAT'		     > $@
+	echo '#ifndef __RX_64BIT_DOUBLES__' >> $@
+	echo '#define DF SF'		    >> $@
+	echo '#define FLOAT_ONLY'	    >> $@
+	echo '#endif' 			    >> $@
+	cat $(gcc_srcdir)/config/fp-bit.c   >> $@
+
+DPBIT = dp-bit.c
+$(gcc_objdir)/dp-bit.c: $(gcc_srcdir)/config/fp-bit.c
+	echo '#ifdef __RX_64BIT_DOUBLES__'   > $@
+	cat $(gcc_srcdir)/config/fp-bit.c   >> $@
+	echo '#endif'		      	    >> $@