gcc/config/arm/t-multilib

   1 # Copyright (C) 2016-2018 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 MULTILIB_OPTIONS     =
  28 MULTILIB_DIRNAMES    =
  29 MULTILIB_EXCEPTIONS  =
  30 MULTILIB_MATCHES     =
  31 MULTILIB_REUSE       =
  32 MULTILIB_REQUIRED    =
  33
  34 comma := ,
  35 tm_multilib_list := $(subst $(comma), ,$(TM_MULTILIB_CONFIG))
  36
  37 HAS_APROFILE := $(filter aprofile,$(tm_multilib_list))
  38 HAS_RMPROFILE := $(filter rmprofile,$(tm_multilib_list))
  39
  40 # Produce the combinatorial list of extensions.  Where there are
  41 # multiple permutations for a combination, the ordering is the
  42 # selected by the forward ordering of the original list.  This matches
  43 # the canonical ordering generated by the canonicalizer in the driver.
  44 #
  45 # For example,
  46 #   $(call all_feat_combs, a b)
  47 # will produce
  48 #   +a +a+b +b
  49 # but will not include
  50 #   +b+a
  51 # The rule is recursive and can be called with any (reasonable) list of
  52 # extensions.
  53 all_feat_combs  = +$(firstword $(1)) \
  54                   $(if $(wordlist 2, $(words $(1)), $(1)), \
  55                     $(foreach OPT, \
  56                       $(call all_feat_combs, \
  57                         $(wordlist 2, $(words $(1)), $(1))), \
  58                       +$(firstword $(1))$(OPT) $(OPT)),)
  59
  60 # Variables used.
  61 all_early_arch          := armv5e armv5tej armv6 armv6j armv6k armv6z armv6kz \
  62                            armv6zk armv6t2 iwmmxt iwmmxt2
  63 v7_a_nosimd_variants    := +fp +vfpv3 +vfpv3-d16-fp16 +vfpv3-fp16 +vfpv4-d16 +vfpv4
  64 v7_a_simd_variants      := +simd +neon-fp16 +neon-vfpv4
  65 v7ve_nosimd_variants    := +vfpv3-d16 +vfpv3 +vfpv3-d16-fp16 +vfpv3-fp16 +fp +vfpv4
  66 v7ve_vfpv3_simd_variants := +neon +neon-fp16
  67 v7ve_vfpv4_simd_variants := +simd
  68 v8_a_nosimd_variants    := +crc
  69 v8_a_simd_variants      := $(call all_feat_combs, simd crypto)
  70 v8_1_a_simd_variants    := $(call all_feat_combs, simd crypto)
  71 v8_2_a_simd_variants    := $(call all_feat_combs, simd fp16 crypto dotprod)
  72
  73
  74 ifneq (,$(HAS_APROFILE))
  75 include $(srcdir)/config/arm/t-aprofile
  76 endif
  77 ifneq (,$(HAS_RMPROFILE))
  78 include $(srcdir)/config/arm/t-rmprofile
  79 endif
  80 SEP := $(and $(HAS_APROFILE),$(HAS_RMPROFILE),/)
  81
  82
  83 MULTILIB_OPTIONS        += marm/mthumb
  84 MULTILIB_DIRNAMES       += arm thumb
  85
  86 MULTILIB_OPTIONS        += march=armv5te+fp/march=armv7/march=armv7+fp/$(MULTI_ARCH_OPTS_A)$(SEP)$(MULTI_ARCH_OPTS_RM)
  87 MULTILIB_DIRNAMES       += v5te v7 v7+fp $(MULTI_ARCH_DIRS_A) $(MULTI_ARCH_DIRS_RM)
  88
  89 MULTILIB_OPTIONS        += mfloat-abi=soft/mfloat-abi=softfp/mfloat-abi=hard
  90 MULTILIB_DIRNAMES       += nofp softfp hard
  91
  92 MULTILIB_REQUIRED       += mthumb/mfloat-abi=soft
  93 MULTILIB_REQUIRED       += marm/march=armv5te+fp/mfloat-abi=softfp
  94 MULTILIB_REQUIRED       += marm/march=armv5te+fp/mfloat-abi=hard
  95
  96 MULTILIB_REQUIRED       += mthumb/march=armv7/mfloat-abi=soft
  97 MULTILIB_REQUIRED       += mthumb/march=armv7+fp/mfloat-abi=softfp
  98 MULTILIB_REQUIRED       += mthumb/march=armv7+fp/mfloat-abi=hard
  99
 100 # Map v7-r down onto common v7 code.
 101 MULTILIB_MATCHES        += march?armv7=march?armv7-r
 102 MULTILIB_MATCHES        += march?armv7=march?armv7-r+idiv
 103 MULTILIB_MATCHES        += march?armv7+fp=march?armv7-r+fp
 104 MULTILIB_MATCHES        += march?armv7+fp=march?armv7-r+fp+idiv
 105
 106 MULTILIB_MATCHES        += $(foreach ARCH, $(all_early_arch), \
 107                              march?armv5te+fp=march?$(ARCH)+fp)
 108
 109 ifeq (,$(HAS_APROFILE))
 110 # Map all v7-a
 111 MULTILIB_MATCHES        += march?armv7=march?armv7-a
 112 MULTILIB_MATCHES        += $(foreach ARCH, $(v7_a_nosimd_variants) $(v7_a_simd_variants), \
 113                              march?armv7+fp=march?armv7-a$(ARCH))
 114
 115 MULTILIB_MATCHES        += march?armv7=march?armv7ve
 116
 117 # ARMv7ve FP/SIMD variants: map down to v7+fp
 118 MULTILIB_MATCHES        += $(foreach ARCH, $(v7ve_nosimd_variants) $(v7ve_vfpv3_simd_variants) $(v7ve_vfpv4_simd_variants), \
 119                              march?armv7+fp=march?armv7ve$(ARCH))
 120
 121 # ARMv8
 122 MULTILIB_MATCHES        += march?armv7=march?armv8-a
 123 MULTILIB_MATCHES        += $(foreach ARCH, $(v8_a_nosimd_variants), \
 124                              march?armv7=march?armv8-a$(ARCH))
 125
 126 # ARMv8 with SIMD
 127 MULTILIB_MATCHES        += march?armv7+fp=march?armv8-a+crc+simd \
 128                            $(foreach ARCH, $(v8_a_simd_variants), \
 129                              march?armv7+fp=march?armv8-a$(ARCH) \
 130                              march?armv7+fp=march?armv8-a+crc$(ARCH))
 131
 132 # Baseline v8.1-a
 133 MULTILIB_MATCHES        += march?armv7=march?armv8.1-a
 134
 135 # Map all v8.1-a SIMD variants
 136 MULTILIB_MATCHES        += $(foreach ARCH, $(v8_1_a_simd_variants), \
 137                              march?armv7+fp=march?armv8.1-a$(ARCH))
 138
 139 # Baseline v8.2-a: map down to baseline v8-a
 140 MULTILIB_MATCHES        += march?armv7=march?armv8.2-a
 141
 142 # Baseline v8.3-a: map down to baseline v8-a
 143 MULTILIB_MATCHES        += march?armv7=march?armv8.3-a
 144
 145 # Map all v8.2-a SIMD variants.  v8.3-a SIMD variants have the same mappings
 146 MULTILIB_MATCHES        += $(foreach ARCH, $(v8_2_a_simd_variants), \
 147                              march?armv7+fp=march?armv8.2-a$(ARCH) \
 148                              march?armv7+fp=march?armv8.3-a$(ARCH))
 149
 150 # Use Thumb libraries for everything.
 151
 152 MULTILIB_REUSE          += mthumb/march.armv7/mfloat-abi.soft=marm/march.armv7/mfloat-abi.soft
 153
 154 MULTILIB_REUSE          += $(foreach ABI, hard softfp, \
 155                              $(foreach ARCH, armv7+fp, \
 156                                mthumb/march.$(ARCH)/mfloat-abi.$(ABI)=marm/march.$(ARCH)/mfloat-abi.$(ABI)))
 157
 158 # Softfp but no FP, use the soft-float libraries.
 159 MULTILIB_REUSE          += $(foreach MODE, arm thumb, \
 160                              $(foreach ARCH, armv7, \
 161                                mthumb/march.$(ARCH)/mfloat-abi.soft=m$(MODE)/march.$(ARCH)/mfloat-abi.softfp))
 162
 163 endif           # Not APROFILE.