gcc/config/m68k/t-mlibs

   1 # multilibs  -*- mode:Makefile -*-
   2 #
   3 # Copyright (C) 2007-2020 Free Software Foundation, Inc.
   4 #
   5 # This file is part of GCC.
   6 #
   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)
  10 # any later version.
  11 #
  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.
  16 #
  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/>.
  20
  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))
  34
  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), \
  39         "m"MLIB)
  40
  41 # Make the default cpu the default multilib.
  42 M68K_MLIB_DEFAULT := $(call M68K_AWK, CPU == "$(target_cpu_default)", MLIB)
  43
  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)')
  46 endif
  47
  48 MULTILIB_DIRNAMES := $(filter-out m$(M68K_MLIB_DEFAULT),$(M68K_MLIB_CPUS))
  49 MULTILIB_OPTIONS := $(shell echo $(MULTILIB_DIRNAMES:m%=mcpu=%) \
  50                       | sed -e 's| |/|g' )
  51
  52 # Add subtarget specific options & dirs.
  53 MULTILIB_DIRNAMES += $(M68K_MLIB_DIRNAMES)
  54 MULTILIB_OPTIONS += $(M68K_MLIB_OPTIONS)
  55
  56 MULTILIB_MATCHES :=
  57
  58 ifneq ($(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
  66 endif
  67
  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 \
  71                     mcpu?5407=march?isab
  72 endif
  73
  74 # Match non-representative -mcpu options to their representative option.
  75 MULTILIB_MATCHES += \
  76   $(call M68K_AWK, \
  77          (CPU_NAME != MLIB) $(M68K_MLIB_CPU), \
  78          ("mcpu?"MLIB"=mcpu?"CPU_NAME))
  79
  80 MULTILIB_EXCEPTIONS :=
  81
  82 ifeq ($(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")) \
  87              || CPU == "cpu32" \
  88              || CPU == "m68000"), \
  89          "mcpu="MLIB"/msoft-float*")
  90 endif
  91
  92 # Remove the default CPU from the explicit exceptions.
  93 MULTILIB_EXCEPTIONS := \
  94         $(patsubst mcpu=$(M68K_MLIB_DEFAULT)/%,%,$(MULTILIB_EXCEPTIONS))