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# Copyright (C) 2016-2023 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/>.
# This is a target makefile fragment that attempts to get
# multilibs built for the range of CPU's, FPU's and ABI's that
# are relevant for the ARM architecture. It should not be used in
# conjunction with another make file fragment and assumes --with-arch,
# --with-cpu, --with-fpu, --with-float, --with-mode have their default
# values during the configure step. We enforce this during the
# top-level configury.
# Arch and FPU variants to build libraries with
MULTI_ARCH_OPTS_RM = march=armv6s-m/march=armv7-m/march=armv7e-m/march=armv7e-m+fp/march=armv7e-m+fp.dp/march=armv8-m.base/march=armv8-m.main/march=armv8-m.main+fp/march=armv8-m.main+fp.dp/march=armv8.1-m.main+mve/march=armv8.1-m.main+pacbti/march=armv8.1-m.main+pacbti+fp/march=armv8.1-m.main+pacbti+fp.dp/march=armv8.1-m.main+pacbti+mve
MULTI_ARCH_DIRS_RM = v6-m v7-m v7e-m v7e-m+fp v7e-m+dp v8-m.base v8-m.main v8-m.main+fp v8-m.main+dp v8.1-m.main+mve v8.1-m.main+pacbti v8.1-m.main+pacbti+fp v8.1-m.main+pacbti+dp v8.1-m.main+pacbti+mve
MULTI_ARCH_OPTS_RM += mbranch-protection=standard
MULTI_ARCH_DIRS_RM += bp
# Base M-profile (no fp)
MULTILIB_REQUIRED += mthumb/march=armv6s-m/mfloat-abi=soft
MULTILIB_REQUIRED += mthumb/march=armv7-m/mfloat-abi=soft
MULTILIB_REQUIRED += mthumb/march=armv7e-m/mfloat-abi=soft
MULTILIB_REQUIRED += mthumb/march=armv8-m.base/mfloat-abi=soft
MULTILIB_REQUIRED += mthumb/march=armv8-m.main/mfloat-abi=soft
# ARMv7e-M with FP (single and double precision variants)
MULTILIB_REQUIRED += mthumb/march=armv7e-m+fp/mfloat-abi=hard
MULTILIB_REQUIRED += mthumb/march=armv7e-m+fp/mfloat-abi=softfp
MULTILIB_REQUIRED += mthumb/march=armv7e-m+fp.dp/mfloat-abi=hard
MULTILIB_REQUIRED += mthumb/march=armv7e-m+fp.dp/mfloat-abi=softfp
# ARMv8-M with FP (single and double precision variants)
MULTILIB_REQUIRED += mthumb/march=armv8-m.main+fp/mfloat-abi=hard
MULTILIB_REQUIRED += mthumb/march=armv8-m.main+fp/mfloat-abi=softfp
MULTILIB_REQUIRED += mthumb/march=armv8-m.main+fp.dp/mfloat-abi=hard
MULTILIB_REQUIRED += mthumb/march=armv8-m.main+fp.dp/mfloat-abi=softfp
MULTILIB_REQUIRED += mthumb/march=armv8.1-m.main+mve/mfloat-abi=hard
MULTILIB_REQUIRED += mthumb/march=armv8.1-m.main+pacbti/mbranch-protection=standard/mfloat-abi=soft
MULTILIB_REQUIRED += mthumb/march=armv8.1-m.main+pacbti+fp/mbranch-protection=standard/mfloat-abi=softfp
MULTILIB_REQUIRED += mthumb/march=armv8.1-m.main+pacbti+fp/mbranch-protection=standard/mfloat-abi=hard
MULTILIB_REQUIRED += mthumb/march=armv8.1-m.main+pacbti+fp.dp/mbranch-protection=standard/mfloat-abi=softfp
MULTILIB_REQUIRED += mthumb/march=armv8.1-m.main+pacbti+fp.dp/mbranch-protection=standard/mfloat-abi=hard
MULTILIB_REQUIRED += mthumb/march=armv8.1-m.main+pacbti+mve/mbranch-protection=standard/mfloat-abi=hard
# Arch Matches
MULTILIB_MATCHES += march?armv6s-m=march?armv6-m
# For all MULITIB_MATCHES for v8-m and above add mlibarch? on the right hand side
# of = in the variant string instead of march?. This is needed because all the
# MULITIB_MATCHES variant strings are compared with mlibarch option for multilib
# linking.
# Map all v8-m.main+dsp FP variants down to the variant without DSP.
MULTILIB_MATCHES += march?armv8-m.main=mlibarch?armv8-m.main+dsp \
$(foreach FP, +fp +fp.dp, \
march?armv8-m.main$(FP)=mlibarch?armv8-m.main+dsp$(FP))
# For single-precision only fpv5, use the base fp libraries
MULTILIB_MATCHES += march?armv7e-m+fp=march?armv7e-m+fpv5
# Softfp but no FP. Use the soft-float libraries.
MULTILIB_REUSE += $(foreach ARCH, armv6s-m armv7-m armv7e-m armv8-m\.base armv8-m\.main, \
mthumb/march.$(ARCH)/mfloat-abi.soft=mthumb/march.$(ARCH)/mfloat-abi.softfp)
# Map v8.1-M to v8-M.
MULTILIB_MATCHES += march?armv8-m.main=mlibarch?armv8.1-m.main
MULTILIB_MATCHES += march?armv8-m.main=mlibarch?armv8.1-m.main+dsp
MULTILIB_REUSE += mthumb/march.armv8-m\.main/mfloat-abi.soft=mthumb/march.armv8\.1-m\.main+mve/mfloat-abi.soft
MULTILIB_REUSE += mthumb/march.armv8-m\.main/mfloat-abi.soft=mthumb/march.armv8\.1-m\.main+mve/mfloat-abi.softfp
v8_1m_sp_variants = +fp +dsp+fp +mve.fp +fp+mve
v8_1m_dp_variants = +fp.dp +dsp+fp.dp +fp.dp+mve +fp.dp+mve.fp
# Map all v8.1-m.main FP sp variants down to v8-m.
MULTILIB_MATCHES += $(foreach FP, $(v8_1m_sp_variants), \
march?armv8-m.main+fp=mlibarch?armv8.1-m.main$(FP))
# Map all v8.1-m.main FP dp variants down to v8-m.
MULTILIB_MATCHES += $(foreach FP, $(v8_1m_dp_variants), \
march?armv8-m.main+fp.dp=mlibarch?armv8.1-m.main$(FP))
# Map all mbranch-protection values other than 'none' to 'standard'.
MULTILIB_MATCHES += mbranch-protection?standard=mbranch-protection?bti
MULTILIB_MATCHES += mbranch-protection?standard=mbranch-protection?pac-ret
MULTILIB_MATCHES += mbranch-protection?standard=mbranch-protection?pac-ret+leaf
MULTILIB_MATCHES += mbranch-protection?standard=mbranch-protection?pac-ret+bti
MULTILIB_MATCHES += mbranch-protection?standard=mbranch-protection?pac-ret+leaf+bti
MULTILIB_MATCHES += mbranch-protection?standard=mbranch-protection?bti+pac-ret
MULTILIB_MATCHES += mbranch-protection?standard=mbranch-protection?bti+pac-ret+leaf
MULTILIB_MATCHES += mbranch-protection?standard=mbranch-protection?standard+leaf
# For all the MULTILIB_REQUIRED for v8-m and above, add MULTILIB_MATCHES which
# maps mlibarch with march for multilib linking.
MULTILIB_MATCHES += march?armv8-m.main=mlibarch?armv8-m.main
MULTILIB_MATCHES += march?armv8-m.main+fp=mlibarch?armv8-m.main+fp
MULTILIB_MATCHES += march?armv8-m.main+fp.dp=mlibarch?armv8-m.main+fp.dp
MULTILIB_MATCHES += march?armv8.1-m.main+mve=mlibarch?armv8.1-m.main+mve
# For -mbranch-protection=none and +pacbti reuses the existing non pacbti
# multilibs.
MULTILIB_REUSE += $(foreach OPT, fp fp\.dp, \
mthumb/march.armv8-m\.main+$(OPT)/mfloat-abi.softfp=mthumb/march.armv8\.1-m\.main+pacbti+$(OPT)/mfloat-abi.softfp)
MULTILIB_REUSE += $(foreach OPT, fp fp\.dp, \
mthumb/march.armv8-m\.main+$(OPT)/mfloat-abi.hard=mthumb/march.armv8\.1-m\.main+pacbti+$(OPT)/mfloat-abi.hard)
MULTILIB_REUSE += $(foreach OPT, pacbti pacbti+mve, \
mthumb/march.armv8-m\.main/mfloat-abi.soft=mthumb/march.armv8\.1-m\.main+$(OPT)/mfloat-abi.soft)
MULTILIB_REUSE += $(foreach OPT, pacbti pacbti+mve, \
mthumb/march.armv8-m\.main/mfloat-abi.soft=mthumb/march.armv8\.1-m\.main+$(OPT)/mfloat-abi.softfp)
MULTILIB_REUSE += mthumb/march.armv8\.1-m\.main+mve/mfloat-abi.hard=mthumb/march.armv8\.1-m\.main+pacbti+mve/mfloat-abi.hard
pacbti_fp_variants = fp fp+mve mve.fp fp+mve.fp
pacbti_dp_variants = fp.dp fp.dp+mve fp.dp+mve.fp
# For -mbranch-protection=standard and +pacbti linking to existing pacbti
# multlibs.
MULTILIB_MATCHES += march?armv8.1-m.main+pacbti=mlibarch?armv8.1-m.main+pacbti
MULTILIB_MATCHES += march?armv8.1-m.main+pacbti=mlibarch?armv8.1-m.main+pacbti+dsp
MULTILIB_MATCHES += march?armv8.1-m.main+pacbti=mlibarch?armv8.1-m.main+dsp+pacbti
MULTILIB_MATCHES += march?armv8.1-m.main+pacbti+mve=mlibarch?armv8.1-m.main+pacbti+mve
MULTILIB_MATCHES += march?armv8.1-m.main+pacbti+mve=mlibarch?armv8.1-m.main+pacbti+dsp+mve
MULTILIB_MATCHES += march?armv8.1-m.main+pacbti+mve=mlibarch?armv8.1-m.main+dsp+pacbti+mve
MULTILIB_MATCHES += $(foreach OPT, $(pacbti_fp_variants), \
march?armv8.1-m.main+pacbti+fp=mlibarch?armv8.1-m.main+pacbti+$(OPT))
MULTILIB_MATCHES += $(foreach OPT, $(pacbti_fp_variants), \
march?armv8.1-m.main+pacbti+fp=mlibarch?armv8.1-m.main+pacbti+dsp+$(OPT))
MULTILIB_MATCHES += $(foreach OPT, $(pacbti_dp_variants), \
march?armv8.1-m.main+pacbti+fp.dp=mlibarch?armv8.1-m.main+pacbti+$(OPT))
MULTILIB_MATCHES += $(foreach OPT, $(pacbti_dp_variants), \
march?armv8.1-m.main+pacbti+fp.dp=mlibarch?armv8.1-m.main+pacbti+dsp+$(OPT))
MULTILIB_MATCHES += $(foreach OPT, $(pacbti_fp_variants), \
march?armv8.1-m.main+pacbti+fp=mlibarch?armv8.1-m.main+dsp+pacbti+$(OPT))
MULTILIB_MATCHES += $(foreach OPT, $(pacbti_dp_variants), \
march?armv8.1-m.main+pacbti+fp.dp=mlibarch?armv8.1-m.main+dsp+pacbti+$(OPT))
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