1# Copyright (C) 2016-2022 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
27s-mlib: $(srcdir)/config/arm/t-multilib $(srcdir)/config/arm/t-aprofile $(srcdir)/config/arm/t-rmprofile
28
29MULTILIB_OPTIONS     =
30MULTILIB_DIRNAMES    =
31MULTILIB_EXCEPTIONS  =
32MULTILIB_MATCHES     =
33MULTILIB_REUSE           =
34MULTILIB_REQUIRED    =
35
36comma := ,
37tm_multilib_list := $(subst $(comma), ,$(TM_MULTILIB_CONFIG))
38
39HAS_APROFILE := $(filter aprofile,$(tm_multilib_list))
40HAS_RMPROFILE := $(filter rmprofile,$(tm_multilib_list))
41
42# Produce the combinatorial list of extensions.  Where there are
43# multiple permutations for a combination, the ordering is the
44# selected by the forward ordering of the original list.  This matches
45# the canonical ordering generated by the canonicalizer in the driver.
46#
47# For example,
48#   $(call all_feat_combs, a b)
49# will produce
50#   +a +a+b +b
51# but will not include
52#   +b+a
53# The rule is recursive and can be called with any (reasonable) list of
54# extensions.
55all_feat_combs      = +$(firstword $(1)) \
56                      $(if $(wordlist 2, $(words $(1)), $(1)), \
57                        $(foreach OPT, \
58                          $(call all_feat_combs, \
59                            $(wordlist 2, $(words $(1)), $(1))), \
60                          +$(firstword $(1))$(OPT) $(OPT)),)
61
62# Variables used.
63all_early_arch                := armv5tej armv6 armv6j armv6k armv6z armv6kz \
64                                 armv6zk armv6t2 iwmmxt iwmmxt2
65v7_a_arch_variants  := $(call all_feat_combs, mp sec)
66v7_a_nosimd_variants          := +fp +vfpv3 +vfpv3-d16-fp16 +vfpv3-fp16 +vfpv4-d16 +vfpv4
67v7_a_simd_variants  := +simd +neon-fp16 +neon-vfpv4
68v7_r_sp_variants    := +fp.sp +fp.sp+idiv +vfpv3xd-fp16 +vfpv3xd-fp16+idiv
69v7_r_dp_variants    := +fp +fp+idiv +vfpv3-d16-fp16 +vfpv3-d16-fp16+idiv
70v7ve_nosimd_variants          := +vfpv3-d16 +vfpv3 +vfpv3-d16-fp16 +vfpv3-fp16 +fp +vfpv4
71v7ve_vfpv3_simd_variants := +neon +neon-fp16
72v7ve_vfpv4_simd_variants := +simd
73v8_a_nosimd_variants          := +crc
74v8_a_simd_variants  := $(call all_feat_combs, simd crypto)
75v8_1_a_simd_variants          := $(call all_feat_combs, simd crypto)
76v8_2_a_simd_variants          := $(call all_feat_combs, simd fp16 fp16fml crypto dotprod i8mm bf16)
77v8_4_a_simd_variants          := $(call all_feat_combs, simd fp16 crypto i8mm bf16)
78v8_5_a_simd_variants          := $(call all_feat_combs, simd fp16 crypto i8mm bf16)
79v8_6_a_simd_variants          := $(call all_feat_combs, simd fp16 crypto i8mm bf16)
80v8_r_nosimd_variants          := +crc
81v9_a_simd_variants  := $(call all_feat_combs, simd fp16 crypto i8mm bf16)
82
83ifneq (,$(HAS_APROFILE))
84include $(srcdir)/config/arm/t-aprofile
85endif
86ifneq (,$(HAS_RMPROFILE))
87include $(srcdir)/config/arm/t-rmprofile
88endif
89SEP := $(and $(HAS_APROFILE),$(HAS_RMPROFILE),/)
90
91
92MULTILIB_OPTIONS    += marm/mthumb
93MULTILIB_DIRNAMES   += arm thumb
94
95MULTILIB_OPTIONS    += march=armv5te+fp/march=armv7/march=armv7+fp/march=armv7-r+fp.sp/$(MULTI_ARCH_OPTS_A)$(SEP)$(MULTI_ARCH_OPTS_RM)
96MULTILIB_DIRNAMES   += v5te v7 v7+fp v7-r+fp.sp $(MULTI_ARCH_DIRS_A) $(MULTI_ARCH_DIRS_RM)
97
98MULTILIB_OPTIONS    += mfloat-abi=soft/mfloat-abi=softfp/mfloat-abi=hard
99MULTILIB_DIRNAMES   += nofp softfp hard
100
101MULTILIB_REQUIRED   += mthumb/mfloat-abi=soft
102MULTILIB_REQUIRED   += marm/march=armv5te+fp/mfloat-abi=softfp
103MULTILIB_REQUIRED   += marm/march=armv5te+fp/mfloat-abi=hard
104
105MULTILIB_REQUIRED   += mthumb/march=armv7/mfloat-abi=soft
106MULTILIB_REQUIRED   += mthumb/march=armv7+fp/mfloat-abi=softfp
107MULTILIB_REQUIRED   += mthumb/march=armv7+fp/mfloat-abi=hard
108
109MULTILIB_REQUIRED   += mthumb/march=armv7-r+fp.sp/mfloat-abi=softfp
110MULTILIB_REQUIRED   += mthumb/march=armv7-r+fp.sp/mfloat-abi=hard
111
112# Map v7-r with double precision down onto common v7 code.
113MULTILIB_MATCHES    += march?armv7=march?armv7-r
114MULTILIB_MATCHES    += march?armv7=march?armv7-r+idiv
115MULTILIB_MATCHES    += $(foreach ARCH, $(v7_r_dp_variants), \
116                                   march?armv7+fp=march?armv7-r$(ARCH))
117
118# Map v7-r single precision variants to v7-r with single precision.
119MULTILIB_MATCHES    += $(foreach ARCH, \
120                                   $(filter-out +fp.sp, $(v7_r_sp_variants)), \
121                                   march?armv7-r+fp.sp=march?armv7-r$(ARCH))
122
123MULTILIB_MATCHES    += $(foreach ARCH, $(all_early_arch), \
124                                   march?armv5te+fp=march?$(ARCH)+fp)
125# Map v8-r down onto common v7 code or v7-r sp.
126MULTILIB_MATCHES    += march?armv7=march?armv8-r
127MULTILIB_MATCHES    += $(foreach ARCH, $(v8_r_nosimd_variants), \
128                                   march?armv7=march?armv8-r$(ARCH))
129MULTILIB_MATCHES    += $(foreach ARCH,+simd +crypto, \
130                                   march?armv7+fp=march?armv8-r$(ARCH) \
131                                   march?armv7+fp=march?armv8-r+crc$(ARCH))
132MULTILIB_MATCHES    += march?armv7-r+fp.sp=march?armv8-r+fp.sp
133MULTILIB_MATCHES    += march?armv7-r+fp.sp=march?armv8-r+crc+fp.sp
134
135ifeq (,$(HAS_APROFILE))
136# Map all v7-a
137
138MULTILIB_MATCHES    += march?armv7=march?armv7-a
139
140MULTILIB_MATCHES    += $(foreach ARCH, $(v7_a_arch_variants), \
141                                   march?armv7=march?armv7-a$(ARCH))
142
143MULTILIB_MATCHES    += $(foreach ARCH, $(v7_a_nosimd_variants) $(v7_a_simd_variants), \
144                                   march?armv7+fp=march?armv7-a$(ARCH))
145
146MULTILIB_MATCHES    += $(foreach ARCHVAR, $(v7_a_arch_variants), \
147                                   $(foreach ARCH, $(v7_a_nosimd_variants) $(v7_a_simd_variants), \
148                                     march?armv7+fp=march?armv7-a$(ARCHVAR)$(ARCH)))
149
150MULTILIB_MATCHES    += march?armv7=march?armv7ve
151
152# ARMv7ve FP/SIMD variants: map down to v7+fp
153MULTILIB_MATCHES    += $(foreach ARCH, $(v7ve_nosimd_variants) $(v7ve_vfpv3_simd_variants) $(v7ve_vfpv4_simd_variants), \
154                                   march?armv7+fp=march?armv7ve$(ARCH))
155
156# ARMv8
157MULTILIB_MATCHES    += march?armv7=march?armv8-a
158MULTILIB_MATCHES    += $(foreach ARCH, $(v8_a_nosimd_variants), \
159                                   march?armv7=march?armv8-a$(ARCH))
160
161# ARMv8 with SIMD
162MULTILIB_MATCHES    += march?armv7+fp=march?armv8-a+crc+simd \
163                                 $(foreach ARCH, $(v8_a_simd_variants), \
164                                   march?armv7+fp=march?armv8-a$(ARCH) \
165                                   march?armv7+fp=march?armv8-a+crc$(ARCH))
166
167# Baseline v8.1-a
168MULTILIB_MATCHES    += march?armv7=march?armv8.1-a
169
170# Map all v8.1-a SIMD variants
171MULTILIB_MATCHES    += $(foreach ARCH, $(v8_1_a_simd_variants), \
172                                   march?armv7+fp=march?armv8.1-a$(ARCH))
173
174# Baseline v8.2-a: map down to baseline v8-a
175MULTILIB_MATCHES    += march?armv7=march?armv8.2-a
176
177# Baseline v8.3-a: map down to baseline v8-a
178MULTILIB_MATCHES    += march?armv7=march?armv8.3-a
179
180# Map all v8.2-a SIMD variants.  v8.3-a SIMD variants have the same mappings
181MULTILIB_MATCHES    += $(foreach ARCH, $(v8_2_a_simd_variants), \
182                                   march?armv7+fp=march?armv8.2-a$(ARCH) \
183                                   march?armv7+fp=march?armv8.3-a$(ARCH))
184
185# Baseline v8.4-a: map down to baseline v8-a
186MULTILIB_MATCHES    += march?armv7=march?armv8.4-a
187
188# Map all v8.4-a SIMD variants
189MULTILIB_MATCHES    += $(foreach ARCH, $(v8_4_a_simd_variants), \
190                                   march?armv7+fp=march?armv8.4-a$(ARCH))
191
192# Baseline v8.5-a: map down to baseline v8-a
193MULTILIB_MATCHES    += march?armv7=march?armv8.5-a
194
195# Map all v8.5-a SIMD variants
196MULTILIB_MATCHES    += $(foreach ARCH, $(v8_5_a_simd_variants), \
197                                   march?armv7+fp=march?armv8.5-a$(ARCH))
198
199# Baseline v8.6-a: map down to baseline v8-a
200MULTILIB_MATCHES    += march?armv7=march?armv8.6-a
201
202# Map all v8.6-a SIMD variants
203MULTILIB_MATCHES    += $(foreach ARCH, $(v8_6_a_simd_variants), \
204                                   march?armv7+fp=march?armv8.6-a$(ARCH))
205
206# Armv9
207MULTILIB_MATCHES    += march?armv7=march?armv9-a
208
209# Armv9 with SIMD
210MULTILIB_MATCHES    += $(foreach ARCH, $(v9_a_simd_variants), \
211                                   march?armv7+fp=march?armv9-a$(ARCH))
212endif               # Not APROFILE.
213
214# Use Thumb libraries for everything.
215
216MULTILIB_REUSE                += mthumb/march.armv7/mfloat-abi.soft=marm/march.armv7/mfloat-abi.soft
217
218MULTILIB_REUSE                += $(foreach ABI, hard softfp, \
219                                   $(foreach ARCH, armv7+fp armv7-r+fp\.sp, \
220                                     mthumb/march.$(ARCH)/mfloat-abi.$(ABI)=marm/march.$(ARCH)/mfloat-abi.$(ABI)))
221
222# Softfp but no FP, use the soft-float libraries.
223MULTILIB_REUSE                += $(foreach MODE, arm thumb, \
224                                   $(foreach ARCH, armv7, \
225                                     mthumb/march.$(ARCH)/mfloat-abi.soft=m$(MODE)/march.$(ARCH)/mfloat-abi.softfp))
226
227