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# Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
# 2008 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 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/>.

# For most CPUs we have an assembly soft-float implementations.
# However this is not true for ARMv6M.  Here we want to use the soft-fp C
# implementation.  The soft-fp code is only build for ARMv6M.  This pulls
# in the asm implementation for other CPUs.
LIB1ASMFUNCS += _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_tls _bb_init_func \
        _call_via_rX _interwork_call_via_rX \
        _lshrdi3 _ashrdi3 _ashldi3 \
        _arm_negdf2 _arm_addsubdf3 _arm_muldivdf3 _arm_cmpdf2 _arm_unorddf2 \
        _arm_fixdfsi _arm_fixunsdfsi \
        _arm_truncdfsf2 _arm_negsf2 _arm_addsubsf3 _arm_muldivsf3 \
        _arm_cmpsf2 _arm_unordsf2 _arm_fixsfsi _arm_fixunssfsi \
        _arm_floatdidf _arm_floatdisf _arm_floatundidf _arm_floatundisf \
        _clzsi2 _clzdi2 

MULTILIB_OPTIONS     = marm/mthumb
MULTILIB_DIRNAMES    = arm thumb
MULTILIB_EXCEPTIONS  = 
MULTILIB_MATCHES     =

#MULTILIB_OPTIONS      += march=armv7
#MULTILIB_DIRNAMES     += thumb2
#MULTILIB_EXCEPTIONS   += march=armv7* marm/*march=armv7*
#MULTILIB_MATCHES      += march?armv7=march?armv7-a
#MULTILIB_MATCHES      += march?armv7=march?armv7-r
#MULTILIB_MATCHES      += march?armv7=march?armv7-m
#MULTILIB_MATCHES      += march?armv7=mcpu?cortex-a8
#MULTILIB_MATCHES      += march?armv7=mcpu?cortex-r4
#MULTILIB_MATCHES      += march?armv7=mcpu?cortex-m3

# Not quite true.  We can support hard-vfp calling in Thumb2, but how do we
# express that here?  Also, we really need architecture v5e or later
# (mcrr etc).
MULTILIB_OPTIONS       += mfloat-abi=hard
MULTILIB_DIRNAMES      += fpu
MULTILIB_EXCEPTIONS    += *mthumb/*mfloat-abi=hard*

# MULTILIB_OPTIONS    += mcpu=ep9312
# MULTILIB_DIRNAMES   += ep9312
# MULTILIB_EXCEPTIONS += *mthumb/*mcpu=ep9312*
#       
# MULTILIB_OPTIONS     += mlittle-endian/mbig-endian
# MULTILIB_DIRNAMES    += le be
# MULTILIB_MATCHES     += mbig-endian=mbe mlittle-endian=mle
# 
# MULTILIB_OPTIONS    += mhard-float/msoft-float
# MULTILIB_DIRNAMES   += fpu soft
# MULTILIB_EXCEPTIONS += *mthumb/*mhard-float*
# 
# MULTILIB_OPTIONS    += mno-thumb-interwork/mthumb-interwork
# MULTILIB_DIRNAMES   += normal interwork
# 
# MULTILIB_OPTIONS    += fno-leading-underscore/fleading-underscore
# MULTILIB_DIRNAMES   += elf under
# 
# MULTILIB_OPTIONS    += mcpu=arm7
# MULTILIB_DIRNAMES   += nofmult
# MULTILIB_EXCEPTIONS += *mthumb*/*mcpu=arm7*
# # Note: the multilib_exceptions matches both -mthumb and
# # -mthumb-interwork
# #
# # We have to match all the arm cpu variants which do not have the
# # multiply instruction and treat them as if the user had specified
# # -mcpu=arm7.  Note that in the following the ? is interpreted as
# # an = for the purposes of matching command line options.
# # FIXME: There ought to be a better way to do this.
# MULTILIB_MATCHES    += mcpu?arm7=mcpu?arm7d
# MULTILIB_MATCHES    += mcpu?arm7=mcpu?arm7di
# MULTILIB_MATCHES    += mcpu?arm7=mcpu?arm70
# MULTILIB_MATCHES    += mcpu?arm7=mcpu?arm700
# MULTILIB_MATCHES    += mcpu?arm7=mcpu?arm700i
# MULTILIB_MATCHES    += mcpu?arm7=mcpu?arm710
# MULTILIB_MATCHES    += mcpu?arm7=mcpu?arm710c
# MULTILIB_MATCHES    += mcpu?arm7=mcpu?arm7100
# MULTILIB_MATCHES    += mcpu?arm7=mcpu?arm7500
# MULTILIB_MATCHES    += mcpu?arm7=mcpu?arm7500fe
# MULTILIB_MATCHES    += mcpu?arm7=mcpu?arm6
# MULTILIB_MATCHES    += mcpu?arm7=mcpu?arm60
# MULTILIB_MATCHES    += mcpu?arm7=mcpu?arm600
# MULTILIB_MATCHES    += mcpu?arm7=mcpu?arm610
# MULTILIB_MATCHES    += mcpu?arm7=mcpu?arm620

EXTRA_MULTILIB_PARTS = crtbegin.o crtend.o crti.o crtn.o

# If EXTRA_MULTILIB_PARTS is not defined above then define EXTRA_PARTS here
# EXTRA_PARTS = crtbegin.o crtend.o crti.o crtn.o

LIBGCC = stmp-multilib
INSTALL_LIBGCC = install-multilib

# Currently there is a bug somewhere in GCC's alias analysis
# or scheduling code that is breaking _fpmul_parts in fp-bit.c.
# Disabling function inlining is a workaround for this problem.
TARGET_LIBGCC2_CFLAGS = -fno-inline

# Assemble startup files.
$(T)crti.o: $(srcdir)/config/arm/crti.asm $(GCC_PASSES)
        $(GCC_FOR_TARGET) $(GCC_CFLAGS) $(MULTILIB_CFLAGS) $(INCLUDES) \
        -c -o $(T)crti.o -x assembler-with-cpp $(srcdir)/config/arm/crti.asm

$(T)crtn.o: $(srcdir)/config/arm/crtn.asm $(GCC_PASSES)
        $(GCC_FOR_TARGET) $(GCC_CFLAGS) $(MULTILIB_CFLAGS) $(INCLUDES) \
        -c -o $(T)crtn.o -x assembler-with-cpp $(srcdir)/config/arm/crtn.asm