gcc/config/avr/genmultilib.awk

   1 # Copyright (C) 2011-2018 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 it under
   6 # the terms of the GNU General Public License as published by the Free
   7 # Software Foundation; either version 3, or (at your option) any later
   8 # version.
   9 #
  10 # GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  11 # WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12 # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13 # 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 ##################################################################
  20 #
  21 # Transform Core/Device Information from avr-mcus.def to a
  22 # Representation that is understood by GCC's multilib Machinery.
  23 #
  24 # The Script works as a Filter from STDIN to STDOUT.
  25 # It generates a Makefile Snippet that sets some
  26 # MULTILIB_* Variables as needed.
  27 #
  28 ##################################################################
  29
  30 BEGIN {
  31     FS ="[(, \t]+"
  32     option[""] = ""
  33     comment = 1
  34
  35     dir_tiny = "tiny-stack"
  36     opt_tiny = "msp8"
  37
  38     dir_rcall = "short-calls"
  39     opt_rcall = "mshort-calls"
  40
  41     #    awk Variable         Makefile Variable
  42     #  ------------------------------------------
  43     #    m_options     <->    MULTILIB_OPTIONS
  44     #    m_dirnames    <->    MULTILIB_DIRNAMES
  45     #    m_required    <->    MULTILIB_REQUIRED
  46     m_sep = ""
  47     m_options    = "\nMULTILIB_OPTIONS = "
  48     m_dirnames   = "\nMULTILIB_DIRNAMES ="
  49     m_required   = "\nMULTILIB_REQUIRED ="
  50 }
  51
  52 ##################################################################
  53 # Add some Comments to the generated Files and copy-paste
  54 # Copyright Notice from above.
  55 ##################################################################
  56
  57 /^#/ {
  58     if (!comment)
  59         next
  60     else if (comment == 1)
  61     {
  62         print "# Auto-generated Makefile Snip"
  63         print "# Generated by    : ./gcc/config/avr/genmultilib.awk"
  64         print "# Generated from  : ./gcc/config/avr/avr-mcus.def"
  65         print "# Used by         : tmake_file from Makefile and genmultilib"
  66         print ""
  67     }
  68
  69     comment = 2;
  70
  71     print
  72 }
  73
  74 /^$/ {
  75     # The first empty line stops copy-pasting the GPL comments
  76     # from this file to the generated file.
  77
  78     comment = 0
  79 }
  80
  81 ##################################################################
  82 # Run over all AVR_MCU Lines.  If we encounter a required multilib
  83 # variant, add according combination of options to m_required,
  84 # but onyl once.  Add encountered cores to m_dirnames and
  85 # according -mmcu= options to m_options.
  86 ##################################################################
  87
  88 /^AVR_MCU/ {
  89     name = $2
  90     gsub ("\"", "", name)
  91
  92     if ($5 == "NULL")
  93     {
  94         core = name
  95
  96         # avr1 is supported for Assembler only:  It gets no multilib
  97         if (core == "avr1")
  98             next
  99
 100         option[core] = "mmcu=" core
 101
 102         m_options  = m_options m_sep option[core]
 103         m_dirnames = m_dirnames " " core
 104         m_sep = "/"
 105
 106         next
 107     }
 108
 109     # avr1 is supported for Assembler only:  Its Devices are ignored
 110     if (core == "avr1")
 111         next
 112
 113     opts = option[core]
 114
 115     # split device specific feature list
 116     n = split($4,dev_attribute,"|")
 117
 118     for (i=1; i <= n; i++)
 119     {
 120       if (dev_attribute[i] == "AVR_SHORT_SP")
 121         opts = opts "/" opt_tiny
 122       if (dev_attribute[i] == "AVR_ISA_RCALL")
 123         opts = opts "/" opt_rcall
 124     }
 125
 126     if (!have[opts])
 127     {
 128         have[opts] = 1
 129         # Some special handling for the default mmcu: Remove a
 130         # leading "mmcu=avr2/" in order not to confuse genmultilib.
 131         gsub (/^mmcu=avr2\//, "", opts)
 132         if (opts != "mmcu=avr2")
 133             m_required = m_required " \\\n\t" opts
 134     }
 135 }
 136
 137 ##################################################################
 138 #
 139 ##################################################################
 140
 141 END {
 142     ############################################################
 143     # Output that Stuff
 144     ############################################################
 145
 146     # Intended Target: ./gcc/config/avr/t-multilib
 147
 148     print m_options  " " opt_tiny " " opt_rcall
 149     print m_dirnames " " dir_tiny " " dir_rcall
 150     print m_required
 151 }