gcc/genattr-common.c

   1 /* Generate attribute information shared between driver and core
   2    compilers (insn-attr-common.h) from machine description.  Split out
   3    of genattr.c.
   4    Copyright (C) 1991-2017 Free Software Foundation, Inc.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 3, or (at your option) any later
  11 version.
  12
  13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22
  23 #include "bconfig.h"
  24 #include "system.h"
  25 #include "coretypes.h"
  26 #include "tm.h"
  27 #include "rtl.h"
  28 #include "errors.h"
  29 #include "read-md.h"
  30 #include "gensupport.h"
  31
  32 static void
  33 write_upcase (const char *str)
  34 {
  35   for (; *str; str++)
  36     putchar (TOUPPER (*str));
  37 }
  38
  39 static void
  40 gen_attr (md_rtx_info *info)
  41 {
  42   const char *p, *tag;
  43
  44   rtx attr = info->def;
  45   p = XSTR (attr, 1);
  46   if (*p != '\0')
  47     {
  48       printf ("enum attr_%s {", XSTR (attr, 0));
  49
  50       while ((tag = scan_comma_elt (&p)) != 0)
  51         {
  52           write_upcase (XSTR (attr, 0));
  53           putchar ('_');
  54           while (tag != p)
  55             putchar (TOUPPER (*tag++));
  56           if (*p == ',')
  57             fputs (", ", stdout);
  58         }
  59       fputs ("};\n", stdout);
  60     }
  61 }
  62
  63 int
  64 main (int argc, const char **argv)
  65 {
  66   bool have_delay = false;
  67   bool have_sched = false;
  68
  69   progname = "genattr-common";
  70
  71   if (!init_rtx_reader_args (argc, argv))
  72     return (FATAL_EXIT_CODE);
  73
  74   puts ("/* Generated automatically by the program `genattr-common'");
  75   puts ("   from the machine description file `md'.  */\n");
  76   puts ("#ifndef GCC_INSN_ATTR_COMMON_H");
  77   puts ("#define GCC_INSN_ATTR_COMMON_H\n");
  78
  79   /* Read the machine description.  */
  80
  81   md_rtx_info info;
  82   while (read_md_rtx (&info))
  83     switch (GET_CODE (info.def))
  84       {
  85       case DEFINE_ATTR:
  86         gen_attr (&info);
  87         break;
  88
  89       case DEFINE_DELAY:
  90         have_delay = true;
  91         break;
  92
  93       case DEFINE_INSN_RESERVATION:
  94         if (!have_sched)
  95           {
  96             printf ("#define INSN_SCHEDULING\n");
  97             have_sched = true;
  98           }
  99         break;
 100
 101       default:
 102         break;
 103       }
 104
 105             printf ("#define DELAY_SLOTS %d\n", have_delay);
 106   puts ("\n#endif /* GCC_INSN_ATTR_COMMON_H */");
 107
 108   if (ferror (stdout) || fflush (stdout) || fclose (stdout))
 109     return FATAL_EXIT_CODE;
 110
 111   return SUCCESS_EXIT_CODE;
 112 }