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
27MULTILIB_OPTIONS     =
28MULTILIB_DIRNAMES    =
29MULTILIB_EXCEPTIONS  =
30MULTILIB_MATCHES     =
31MULTILIB_REUSE	     =
32MULTILIB_REQUIRED    =
33
34comma := ,
35tm_multilib_list := $(subst $(comma), ,$(TM_MULTILIB_CONFIG))
36
37HAS_APROFILE := $(filter aprofile,$(tm_multilib_list))
38HAS_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#   $(call all_feat_combs, a b)
47# will produce
48#   +a +a+b +b
49# but will not include
50#   +b+a
51# The rule is recursive and can be called with any (reasonable) list of
52# extensions.
53all_feat_combs	= +$(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.
61all_early_arch		:= armv5e armv5tej armv6 armv6j armv6k armv6z armv6kz \
62			   armv6zk armv6t2 iwmmxt iwmmxt2
63v7_a_arch_variants	:= $(call all_feat_combs, mp sec)
64v7_a_nosimd_variants	:= +fp +vfpv3 +vfpv3-d16-fp16 +vfpv3-fp16 +vfpv4-d16 +vfpv4
65v7_a_simd_variants	:= +simd +neon-fp16 +neon-vfpv4
66v7ve_nosimd_variants	:= +vfpv3-d16 +vfpv3 +vfpv3-d16-fp16 +vfpv3-fp16 +fp +vfpv4
67v7ve_vfpv3_simd_variants := +neon +neon-fp16
68v7ve_vfpv4_simd_variants := +simd
69v8_a_nosimd_variants	:= +crc
70v8_a_simd_variants	:= $(call all_feat_combs, simd crypto)
71v8_1_a_simd_variants	:= $(call all_feat_combs, simd crypto)
72v8_2_a_simd_variants	:= $(call all_feat_combs, simd fp16 fp16fml crypto dotprod)
73v8_4_a_simd_variants	:= $(call all_feat_combs, simd fp16 crypto)
74v8_r_nosimd_variants	:= +crc
75
76ifneq (,$(HAS_APROFILE))
77include $(srcdir)/config/arm/t-aprofile
78endif
79ifneq (,$(HAS_RMPROFILE))
80include $(srcdir)/config/arm/t-rmprofile
81endif
82SEP := $(and $(HAS_APROFILE),$(HAS_RMPROFILE),/)
83
84
85MULTILIB_OPTIONS	+= marm/mthumb
86MULTILIB_DIRNAMES	+= arm thumb
87
88MULTILIB_OPTIONS	+= march=armv5te+fp/march=armv7/march=armv7+fp/$(MULTI_ARCH_OPTS_A)$(SEP)$(MULTI_ARCH_OPTS_RM)
89MULTILIB_DIRNAMES	+= v5te v7 v7+fp $(MULTI_ARCH_DIRS_A) $(MULTI_ARCH_DIRS_RM)
90
91MULTILIB_OPTIONS	+= mfloat-abi=soft/mfloat-abi=softfp/mfloat-abi=hard
92MULTILIB_DIRNAMES	+= nofp softfp hard
93
94MULTILIB_REQUIRED	+= mthumb/mfloat-abi=soft
95MULTILIB_REQUIRED	+= marm/march=armv5te+fp/mfloat-abi=softfp
96MULTILIB_REQUIRED	+= marm/march=armv5te+fp/mfloat-abi=hard
97
98MULTILIB_REQUIRED	+= mthumb/march=armv7/mfloat-abi=soft
99MULTILIB_REQUIRED	+= mthumb/march=armv7+fp/mfloat-abi=softfp
100MULTILIB_REQUIRED	+= mthumb/march=armv7+fp/mfloat-abi=hard
101
102# Map v7-r down onto common v7 code.
103MULTILIB_MATCHES	+= march?armv7=march?armv7-r
104MULTILIB_MATCHES	+= march?armv7=march?armv7-r+idiv
105MULTILIB_MATCHES	+= march?armv7+fp=march?armv7-r+fp
106MULTILIB_MATCHES	+= march?armv7+fp=march?armv7-r+fp+idiv
107
108MULTILIB_MATCHES	+= $(foreach ARCH, $(all_early_arch), \
109			     march?armv5te+fp=march?$(ARCH)+fp)
110# Map v8-r down onto common v7 code.
111MULTILIB_MATCHES	+= march?armv7=march?armv8-r
112MULTILIB_MATCHES	+= $(foreach ARCH, $(v8_r_nosimd_variants), \
113			     march?armv7=march?armv8-r$(ARCH))
114MULTILIB_MATCHES	+= $(foreach ARCH,+simd +crypto, \
115			     march?armv7+fp=march?armv8-r$(ARCH) \
116			     march?armv7+fp=march?armv8-r+crc$(ARCH))
117
118
119ifeq (,$(HAS_APROFILE))
120# Map all v7-a
121MULTILIB_MATCHES	+= march?armv7=march?armv7-a
122MULTILIB_MATCHES	+= $(foreach ARCH, $(v7_a_nosimd_variants) $(v7_a_simd_variants), \
123			     march?armv7+fp=march?armv7-a$(ARCH))
124
125MULTILIB_MATCHES	+= march?armv7=march?armv7ve
126
127# ARMv7ve FP/SIMD variants: map down to v7+fp
128MULTILIB_MATCHES	+= $(foreach ARCH, $(v7ve_nosimd_variants) $(v7ve_vfpv3_simd_variants) $(v7ve_vfpv4_simd_variants), \
129			     march?armv7+fp=march?armv7ve$(ARCH))
130
131# ARMv8
132MULTILIB_MATCHES	+= march?armv7=march?armv8-a
133MULTILIB_MATCHES	+= $(foreach ARCH, $(v8_a_nosimd_variants), \
134			     march?armv7=march?armv8-a$(ARCH))
135
136# ARMv8 with SIMD
137MULTILIB_MATCHES	+= march?armv7+fp=march?armv8-a+crc+simd \
138			   $(foreach ARCH, $(v8_a_simd_variants), \
139			     march?armv7+fp=march?armv8-a$(ARCH) \
140			     march?armv7+fp=march?armv8-a+crc$(ARCH))
141
142# Baseline v8.1-a
143MULTILIB_MATCHES	+= march?armv7=march?armv8.1-a
144
145# Map all v8.1-a SIMD variants
146MULTILIB_MATCHES	+= $(foreach ARCH, $(v8_1_a_simd_variants), \
147			     march?armv7+fp=march?armv8.1-a$(ARCH))
148
149# Baseline v8.2-a: map down to baseline v8-a
150MULTILIB_MATCHES	+= march?armv7=march?armv8.2-a
151
152# Baseline v8.3-a: map down to baseline v8-a
153MULTILIB_MATCHES	+= march?armv7=march?armv8.3-a
154
155# Map all v8.2-a SIMD variants.  v8.3-a SIMD variants have the same mappings
156MULTILIB_MATCHES	+= $(foreach ARCH, $(v8_2_a_simd_variants), \
157			     march?armv7+fp=march?armv8.2-a$(ARCH) \
158			     march?armv7+fp=march?armv8.3-a$(ARCH))
159
160# Baseline v8.4-a: map down to baseline v8-a
161MULTILIB_MATCHES	+= march?armv7=march?armv8.4-a
162
163# Map all v8.4-a SIMD variants
164MULTILIB_MATCHES	+= $(foreach ARCH, $(v8_4_a_simd_variants), \
165			     march?armv7+fp=march?armv8.4-a$(ARCH))
166
167# Use Thumb libraries for everything.
168
169MULTILIB_REUSE		+= mthumb/march.armv7/mfloat-abi.soft=marm/march.armv7/mfloat-abi.soft
170
171MULTILIB_REUSE		+= $(foreach ABI, hard softfp, \
172			     $(foreach ARCH, armv7+fp, \
173			       mthumb/march.$(ARCH)/mfloat-abi.$(ABI)=marm/march.$(ARCH)/mfloat-abi.$(ABI)))
174
175# Softfp but no FP, use the soft-float libraries.
176MULTILIB_REUSE		+= $(foreach MODE, arm thumb, \
177			     $(foreach ARCH, armv7, \
178			       mthumb/march.$(ARCH)/mfloat-abi.soft=m$(MODE)/march.$(ARCH)/mfloat-abi.softfp))
179
180endif		# Not APROFILE.