2744b8b286
ARC processors can work with a reduced register set (i.e. registers r4-r9 and r16-r25 are not available). This option can be enabled passing -mrf16 option to the compiler, or by using -mcpu=em_mini CPU configuration. Using RF16 config requires all the hand-made assembly files used in libgcc to have the corresponding RF16 object attribute set. This patch qualifies the relevant hand-made assembly files to RF16 config, and also adds generic c-functions for the one which are not. libgcc/ xxxx-xx-xx Claudiu Zissulescu <claziss@synopsys.com> * config/arc/crti.S: Add RF16 object attribute. * config/arc/crtn.S: Likewise. * config/arc/crttls.S: Likewise. * config/arc/lib1funcs.S: Likewise. * config/arc/fp-hack.h (ARC_OPTFPE): Define. * config/arc/lib2funcs.c: New file. * config/arc/t-arc: Add lib2funcs to LIB2ADD.
66 lines
2.6 KiB
Plaintext
66 lines
2.6 KiB
Plaintext
# GCC Makefile fragment for Synopsys DesignWare ARC
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# Copyright (C) 2007-2020 Free Software Foundation, Inc.
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# Contributor: Joern Rennecke <joern.rennecke@embecosm.com>
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# on behalf of Synopsys Inc.
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# This file is part of GCC.
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# GCC is free software; you can redistribute it and/or modify it under the
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# terms of the GNU General Public License as published by the Free Software
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# Foundation; either version 3, or (at your option) any later version.
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# GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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# details.
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# You should have received a copy of the GNU General Public License along
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# with GCC; see the file COPYING3. If not see
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# <http://www.gnu.org/licenses/>.
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CROSS_LIBGCC1 = libgcc1-asm.a
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LIB1ASMSRC = arc/lib1funcs.S
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LIB1ASMFUNCS = _mulsi3 _umulsidi3 _umulsi3_highpart _muldi3 \
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_udivsi3 _divsi3 _umodsi3 _modsi3 \
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_divmod_tools _clzsi2 \
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_millicodethunk_st _millicodethunk_ld _millicodethunk_ret \
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_adddf3 _muldf3 _addsf3 _mulsf3 _divsf3 _divdf3 _truncdfsf2 _extendsfdf2 \
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_eqdf2 _eqsf2 _gedf2 _gesf2 _gtdf2 _gtsf2 _uneqdf2 _uneqsf2 _ordsf2 _orddf2 \
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_fixdfsi _fixsfsi _floatsidf _floatsisf _fixunsdfsi _floatunsidf
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#LIBGCC2_CFLAGS = -g1 -O2 $(LIBGCC2_INCLUDES) $(GCC_CFLAGS)
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# For floating-point emulation, we mostly use hand-coded assembly.
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# We use fp-bit.c for debugging purposes, and some parts of it
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# as a fallback for hardware configurations for which the hand-coded
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# assembly support is incomplete, i.e., where there is no NORM and/or no
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# supported multiply instruction. Using floating point on such a
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# configuration is generally inadvisable, but we got to provide support
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# somehow so that we can run the testsuites.
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# fp-hack.h / dp-hack.h take care of slecting the parts that are needed,
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# and (for debugging) of renaming functions so that they can be
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# used in an asm wrapper.
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LIB2ADD = fp-bit.c dp-bit.c
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LIB2ADD += $(srcdir)/config/arc/lib2funcs.c
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dp-bit.c: $(srcdir)/fp-bit.c
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echo '#ifndef __big_endian__' > dp-bit.c
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echo '#endif' >> dp-bit.c
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echo '#include "fp-bit.h"' >> dp-bit.c
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echo '#include "config/arc/dp-hack.h"' >> dp-bit.c
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grep -v 'include.*fp-bit.h' $(srcdir)/fp-bit.c >> dp-bit.c
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fp-bit.c: $(srcdir)/fp-bit.c
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echo '#define FLOAT' > fp-bit.c
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echo '#ifndef __big_endian__' >> fp-bit.c
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echo '#endif' >> fp-bit.c
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echo '#include "config/arc/fp-hack.h"' >> fp-bit.c
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cat $(srcdir)/fp-bit.c >> fp-bit.c
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# .init/.fini section routines
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crttls.o: $(srcdir)/config/arc/crttls.S
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$(crt_compile) -c -x assembler-with-cpp $<
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