1 # multilibs -*- mode:Makefile -*-
3 # Copyright (C) 2007-2013 Free Software Foundation, Inc.
5 # This file is part of GCC.
7 # GCC is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 3, or (at your option)
12 # GCC is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with GCC; see the file COPYING3. If not see
19 # <http://www.gnu.org/licenses/>.
21 # An awk command to extract lines from the m68k-devices.def file that
22 # match $1 and then print the string defined by $2. Leading and
23 # trailing whitespace is removed. $1 & $2 can make use of
24 # CPU -- the cpu identifier (has leading 'm'/'mcf')
25 # FLAGS -- the cpu capability flags
26 # CPU_NAME -- the cpu name (has no leading m/mcf)
27 # MLIB -- the multilib cpu name (no leading m/mcf)
28 # This is intended to be used as $(call M68K_AWK,predicate,string)
29 M68K_AWK = $(strip $(shell $(AWK) 'BEGIN { FS="[ \t]*[,()][ \t]*"; ORS=" " }; \
30 /^M68K_DEVICE/ { CPU=$$3; FLAGS=$$8; \
31 CPU_NAME=substr($$2,2,length($$2)-2); \
32 MLIB=substr($$5,2,length($$5)-2); \
33 if ($1) print $2 }' $(srcdir)/config/m68k/m68k-devices.def))
35 # Add a multilib for each distinct architecture. M68K_MLIB_CPU, if defined,
36 # adds additional restrictions.
37 M68K_MLIB_CPUS := $(call M68K_AWK,\
38 (CPU_NAME == MLIB) $(M68K_MLIB_CPU), \
41 # Make the default cpu the default multilib.
42 M68K_MLIB_DEFAULT := $(call M68K_AWK, CPU == "$(target_cpu_default)", MLIB)
44 ifeq ($(filter m$(M68K_MLIB_DEFAULT),$(M68K_MLIB_CPUS)),)
45 $(error Error default cpu '$(target_cpu_default)' is not in multilib set '$(M68K_MLIB_CPUS)')
48 MULTILIB_DIRNAMES := $(filter-out m$(M68K_MLIB_DEFAULT),$(M68K_MLIB_CPUS))
49 MULTILIB_OPTIONS := $(shell echo $(MULTILIB_DIRNAMES:m%=mcpu=%) \
52 # Add subtarget specific options & dirs.
53 MULTILIB_DIRNAMES += $(M68K_MLIB_DIRNAMES)
54 MULTILIB_OPTIONS += $(M68K_MLIB_OPTIONS)
58 ifneq ($(M68K_ARCH),cf)
59 # Map -march=* options to the representative -mcpu=* option.
60 MULTILIB_MATCHES += mcpu?68000=march?68000 \
61 mcpu?68020=march?68020 \
62 mcpu?68030=march?68030 \
63 mcpu?68040=march?68040 \
64 mcpu?68060=march?68060 \
65 mcpu?cpu32=march?cpu32
68 ifneq ($(M68K_ARCH),m68k)
69 # Map -march=* options to the representative -mcpu=* option.
70 MULTILIB_MATCHES += mcpu?5206e=march?isaa mcpu?5208=march?isaaplus \
74 # Match non-representative -mcpu options to their representative option.
77 (CPU_NAME != MLIB) $(M68K_MLIB_CPU), \
78 ("mcpu?"MLIB"=mcpu?"CPU_NAME))
80 MULTILIB_EXCEPTIONS :=
82 ifeq ($(firstword $(M68K_MLIB_OPTIONS)),msoft-float)
83 # Exclude soft-float multilibs for targets that default to soft-float anyway.
84 MULTILIB_EXCEPTIONS += $(call M68K_AWK,\
85 (CPU_NAME == MLIB) $(M68K_MLIB_CPU) \
86 && (((CPU ~ "^mcf") && !match(FLAGS, "FL_CF_FPU")) \
88 || CPU == "m68000"), \
89 "mcpu="MLIB"/msoft-float*")
92 # Remove the default CPU from the explicit exceptions.
93 MULTILIB_EXCEPTIONS := \
94 $(patsubst mcpu=$(M68K_MLIB_DEFAULT)/%,%,$(MULTILIB_EXCEPTIONS))