1# Copyright (C) 2016-2020 Free Software Foundation, Inc. 2# 3# This file is part of GCC. 4# 5# GCC is free software; you can redistribute it and/or modify 6# it under the terms of the GNU General Public License as published by 7# the Free Software Foundation; either version 3, or (at your option) 8# any later version. 9# 10# GCC is distributed in the hope that it will be useful, 11# but WITHOUT ANY WARRANTY; without even the implied warranty of 12# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13# GNU General Public License for more details. 14# 15# You should have received a copy of the GNU General Public License 16# along with GCC; see the file COPYING3. If not see 17# <http://www.gnu.org/licenses/>. 18 19# This is a target makefile fragment that attempts to get 20# multilibs built for the range of CPU's, FPU's and ABI's that 21# are relevant for the ARM architecture. It should not be used in 22# conjunction with another make file fragment and assumes --with-arch, 23# --with-cpu, --with-fpu, --with-float, --with-mode have their default 24# values during the configure step. We enforce this during the 25# top-level configury. 26 27 28# Arch and FPU variants to build libraries with 29 30MULTI_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 31MULTI_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 32 33# Base M-profile (no fp) 34MULTILIB_REQUIRED += mthumb/march=armv6s-m/mfloat-abi=soft 35MULTILIB_REQUIRED += mthumb/march=armv7-m/mfloat-abi=soft 36MULTILIB_REQUIRED += mthumb/march=armv7e-m/mfloat-abi=soft 37MULTILIB_REQUIRED += mthumb/march=armv8-m.base/mfloat-abi=soft 38MULTILIB_REQUIRED += mthumb/march=armv8-m.main/mfloat-abi=soft 39 40# ARMv7e-M with FP (single and double precision variants) 41MULTILIB_REQUIRED += mthumb/march=armv7e-m+fp/mfloat-abi=hard 42MULTILIB_REQUIRED += mthumb/march=armv7e-m+fp/mfloat-abi=softfp 43MULTILIB_REQUIRED += mthumb/march=armv7e-m+fp.dp/mfloat-abi=hard 44MULTILIB_REQUIRED += mthumb/march=armv7e-m+fp.dp/mfloat-abi=softfp 45 46# ARMv8-M with FP (single and double precision variants) 47MULTILIB_REQUIRED += mthumb/march=armv8-m.main+fp/mfloat-abi=hard 48MULTILIB_REQUIRED += mthumb/march=armv8-m.main+fp/mfloat-abi=softfp 49MULTILIB_REQUIRED += mthumb/march=armv8-m.main+fp.dp/mfloat-abi=hard 50MULTILIB_REQUIRED += mthumb/march=armv8-m.main+fp.dp/mfloat-abi=softfp 51MULTILIB_REQUIRED += mthumb/march=armv8.1-m.main+mve/mfloat-abi=hard 52 53# Arch Matches 54MULTILIB_MATCHES += march?armv6s-m=march?armv6-m 55 56# For all MULITIB_MATCHES for v8-m and above add mlibarch? on the right hand side 57# of = in the variant string instead of march?. This is needed becuase all the 58# MULITIB_MATCHES variant strings are compared with mlibarch option for multilib 59# linking. 60 61# Map all v8-m.main+dsp FP variants down to the variant without DSP. 62MULTILIB_MATCHES += march?armv8-m.main=mlibarch?armv8-m.main+dsp \ 63 $(foreach FP, +fp +fp.dp, \ 64 march?armv8-m.main$(FP)=mlibarch?armv8-m.main+dsp$(FP)) 65 66# For single-precision only fpv5, use the base fp libraries 67MULTILIB_MATCHES += march?armv7e-m+fp=march?armv7e-m+fpv5 68 69# Softfp but no FP. Use the soft-float libraries. 70MULTILIB_REUSE += $(foreach ARCH, armv6s-m armv7-m armv7e-m armv8-m\.base armv8-m\.main, \ 71 mthumb/march.$(ARCH)/mfloat-abi.soft=mthumb/march.$(ARCH)/mfloat-abi.softfp) 72 73# Map v8.1-M to v8-M. 74MULTILIB_MATCHES += march?armv8-m.main=mlibarch?armv8.1-m.main 75MULTILIB_MATCHES += march?armv8-m.main=mlibarch?armv8.1-m.main+dsp 76MULTILIB_REUSE += mthumb/march.armv8-m\.main/mfloat-abi.soft=mthumb/march.armv8\.1-m\.main+mve/mfloat-abi.soft 77MULTILIB_REUSE += mthumb/march.armv8-m\.main/mfloat-abi.soft=mthumb/march.armv8\.1-m\.main+mve/mfloat-abi.softfp 78 79v8_1m_sp_variants = +fp +dsp+fp +mve.fp +fp+mve 80v8_1m_dp_variants = +fp.dp +dsp+fp.dp +fp.dp+mve +fp.dp+mve.fp 81 82# Map all v8.1-m.main FP sp variants down to v8-m. 83MULTILIB_MATCHES += $(foreach FP, $(v8_1m_sp_variants), \ 84 march?armv8-m.main+fp=mlibarch?armv8.1-m.main$(FP)) 85 86# Map all v8.1-m.main FP dp variants down to v8-m. 87MULTILIB_MATCHES += $(foreach FP, $(v8_1m_dp_variants), \ 88 march?armv8-m.main+fp.dp=mlibarch?armv8.1-m.main$(FP)) 89 90# For all the MULTILIB_REQUIRED for v8-m and above, add MULTILIB_MATCHES which 91# maps mlibarch with march for multilib linking. 92MULTILIB_MATCHES += march?armv8-m.main=mlibarch?armv8-m.main 93MULTILIB_MATCHES += march?armv8-m.main+fp=mlibarch?armv8-m.main+fp 94MULTILIB_MATCHES += march?armv8-m.main+fp.dp=mlibarch?armv8-m.main+fp.dp 95MULTILIB_MATCHES += march?armv8.1-m.main+mve=mlibarch?armv8.1-m.main+mve 96