gcc/config/avr/genmultilib.awk

   1 # Copyright (C) 2011-2025 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_reuse       <->    MULTILIB_REUSE
  47     m_sep = ""
  48     m_options    = "\nMULTILIB_OPTIONS = "
  49     m_dirnames   = "\nMULTILIB_DIRNAMES ="
  50     m_required   = "\nMULTILIB_REQUIRED ="
  51     m_reuse      = "\nMULTILIB_REUSE ="
  52
  53     have_long_double_is_double = (HAVE_LONG_DOUBLE_IS_DOUBLE \
  54                                   == "HAVE_LONG_DOUBLE_IS_DOUBLE")
  55     have_double32 = (HAVE_DOUBLE32 == "HAVE_DOUBLE32")
  56     have_double64 = (HAVE_DOUBLE64 == "HAVE_DOUBLE64")
  57     have_long_double32 = (HAVE_LONG_DOUBLE32 == "HAVE_LONG_DOUBLE32")
  58     have_long_double64 = (HAVE_LONG_DOUBLE64 == "HAVE_LONG_DOUBLE64")
  59
  60     have_double_multi = (have_double32 && have_double64)
  61     have_long_double_multi = (! have_long_double_is_double \
  62                               && have_long_double32 && have_long_double64)
  63
  64     # How to switch away from the default.
  65     dir_double = "double"   (96 - with_double)
  66     opt_double = "mdouble=" (96 - with_double)
  67
  68     dir_long_double = "long-double"   (96 - with_long_double)
  69     opt_long_double = "mlong-double=" (96 - with_long_double)
  70
  71     if (with_multilib_list != "")
  72     {
  73         split(with_multilib_list, multilib_list, ",")
  74
  75         for (i in multilib_list)
  76         {
  77             multilibs[multilib_list[i]] = 1
  78         }
  79     }
  80 }
  81
  82 ##################################################################
  83 # Add some Comments to the generated Files and copy-paste
  84 # Copyright Notice from above.
  85 ##################################################################
  86
  87 /^#/ {
  88     if (!comment)
  89         next
  90     else if (comment == 1)
  91     {
  92         print "# Auto-generated Makefile Snip"
  93         print "# Generated by    : ./gcc/config/avr/genmultilib.awk"
  94         print "# Generated from  : ./gcc/config/avr/avr-mcus.def"
  95         print "# Used by         : tmake_file from Makefile and genmultilib"
  96         print ""
  97     }
  98
  99     comment = 2;
 100
 101     print
 102 }
 103
 104 /^$/ {
 105     # The first empty line stops copy-pasting the GPL comments
 106     # from this file to the generated file.
 107
 108     if (comment)
 109     {
 110         print
 111
 112         if (have_double_multi)
 113         {
 114             print "# dir_double = " dir_double
 115             print "# opt_double = -" opt_double
 116         }
 117         else
 118             print "# No multilib for double."
 119
 120         if (have_long_double_multi)
 121         {
 122             print "# dir_long_double = " dir_long_double
 123             print "# opt_long_double = -" opt_long_double
 124         }
 125         else
 126             print "# No multilib for long double."
 127     }
 128     comment = 0
 129 }
 130
 131 ##################################################################
 132 # Run over all AVR_MCU Lines.  If we encounter a required multilib
 133 # variant, add according combination of options to m_required,
 134 # but onyl once.  Add encountered cores to m_dirnames and
 135 # according -mmcu= options to m_options.
 136 ##################################################################
 137
 138 /^AVR_MCU/ {
 139     name = $2
 140     gsub ("\"", "", name)
 141
 142     if ($5 == "NULL")
 143     {
 144         core = name
 145
 146         # avr1 is supported for Assembler only:  It gets no multilib
 147         if (core == "avr1")
 148             next
 149
 150         if (with_multilib_list != "" && !(core in multilibs))
 151             next
 152
 153         option[core] = "mmcu=" core
 154
 155         m_options  = m_options m_sep option[core]
 156         m_dirnames = m_dirnames " " core
 157         m_sep = "/"
 158
 159         next
 160     }
 161
 162     # avr1 is supported for Assembler only:  Its Devices are ignored
 163     if (core == "avr1")
 164         next
 165
 166     if (with_multilib_list != "" && !(core in multilibs))
 167         next
 168
 169     opts = option[core]
 170
 171     # split device specific feature list
 172     n = split($4,dev_attribute,"|")
 173
 174     for (i=1; i <= n; i++)
 175     {
 176       if (dev_attribute[i] == "AVR_SHORT_SP")
 177         opts = opts "/" opt_tiny
 178       if (dev_attribute[i] == "AVR_ISA_RCALL")
 179         opts = opts "/" opt_rcall
 180     }
 181
 182     if (!have[opts])
 183     {
 184         have[opts] = 1
 185         # Some special handling for the default mmcu: Remove a
 186         # leading "mmcu=avr2/" in order not to confuse genmultilib.
 187         gsub (/^mmcu=avr2\//, "", opts)
 188         if (opts != "mmcu=avr2")
 189         {
 190             m_required = m_required " \\\n\t" opts
 191             if (have_double_multi && have_long_double_multi)
 192             {
 193                 m_required = m_required " \\\n\t" opts "/" opt_double
 194                 m_required = m_required " \\\n\t" opts "/" opt_long_double
 195
 196                 # We have only 3 different combinations because -mdouble=64
 197                 # implies -mlong-double=64, and -mlong-double=32 implies
 198                 # -mdouble=32, hence add respective reuses.  The reuse is
 199                 # not needed in the case with_double != with_long_double
 200                 # which means with_double=32 with_long_double=64 because
 201                 # the driver will rectify combining -mdouble=64 and
 202                 # -mlong-double=32.
 203                 if (with_double == with_long_double)
 204                 {
 205                     d_opts = with_double == 32 ? opt_double : opt_long_double
 206                     d_opts  = opts "/" d_opts
 207                     d_reuse = opts "/" opt_double "/" opt_long_double
 208                     gsub (/=/, ".", d_opts)
 209                     gsub (/=/, ".", d_reuse)
 210                     m_reuse = m_reuse " \\\n\t" d_opts "=" d_reuse
 211                 }
 212             }
 213             else if (have_double_multi)
 214                 m_required = m_required " \\\n\t" opts "/" opt_double
 215             else if (have_long_double_multi)
 216                 m_required = m_required " \\\n\t" opts "/" opt_long_double
 217         }
 218     }
 219 }
 220
 221 ##################################################################
 222 #
 223 ##################################################################
 224
 225 END {
 226     ############################################################
 227     # Output that Stuff
 228     ############################################################
 229
 230     # Intended Target: $(top_builddir)/gcc/t-multilib-avr
 231
 232     if (have_double_multi && have_long_double_multi)
 233     {
 234         print m_options  " " opt_tiny " " opt_rcall " " opt_double "/" opt_long_double
 235         print m_dirnames " " dir_tiny " " dir_rcall " " dir_double " " dir_long_double
 236         # Notice that the ./double* and ./long-double* variants cannot
 237         # be copied by t-avrlibc because the . default multilib is built
 238         # after all the others.
 239         m_required = m_required " \\\n\t" opt_double
 240         m_required = m_required " \\\n\t" opt_long_double
 241         if (with_double == with_long_double)
 242         {
 243             d_opts  = with_double == 32 ? opt_double : opt_long_double
 244             d_reuse = opt_double "/" opt_long_double
 245             gsub (/=/, ".", d_opts)
 246             gsub (/=/, ".", d_reuse)
 247             m_reuse = m_reuse " \\\n\t" d_opts "=" d_reuse
 248
 249         }
 250     }
 251     else if (have_double_multi)
 252     {
 253         print m_options  " " opt_tiny " " opt_rcall " " opt_double
 254         print m_dirnames " " dir_tiny " " dir_rcall " " dir_double
 255         m_required = m_required " \\\n\t" opt_double
 256     }
 257     else if (have_long_double_multi)
 258     {
 259         print m_options  " " opt_tiny " " opt_rcall " " opt_long_double
 260         print m_dirnames " " dir_tiny " " dir_rcall " " dir_long_double
 261         m_required = m_required " \\\n\t" opt_long_double
 262     }
 263     else
 264     {
 265         print m_options  " " opt_tiny " " opt_rcall
 266         print m_dirnames " " dir_tiny " " dir_rcall
 267     }
 268
 269     print m_required
 270     print m_reuse
 271 }