gcc-4_9-branch/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) 1991-2014 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 (rtx attr)
  41 {
  42   const char *p, *tag;
  43
  44   p = XSTR (attr, 1);
  45   if (*p != '\0')
  46     {
  47       printf ("enum attr_%s {", XSTR (attr, 0));
  48
  49       while ((tag = scan_comma_elt (&p)) != 0)
  50         {
  51           write_upcase (XSTR (attr, 0));
  52           putchar ('_');
  53           while (tag != p)
  54             putchar (TOUPPER (*tag++));
  55           if (*p == ',')
  56             fputs (", ", stdout);
  57         }
  58       fputs ("};\n", stdout);
  59     }
  60 }
  61
  62 int
  63 main (int argc, char **argv)
  64 {
  65   rtx desc;
  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   while (1)
  82     {
  83       int line_no, insn_code_number;
  84
  85       desc = read_md_rtx (&line_no, &insn_code_number);
  86       if (desc == NULL)
  87         break;
  88
  89       if (GET_CODE (desc) == DEFINE_ATTR)
  90         gen_attr (desc);
  91
  92       if (GET_CODE (desc) == DEFINE_DELAY)
  93         {
  94           if (!have_delay)
  95             {
  96               printf ("#define DELAY_SLOTS\n");
  97               have_delay = true;
  98             }
  99         }
 100       else if (GET_CODE (desc) == DEFINE_INSN_RESERVATION)
 101         {
 102           if (!have_sched)
 103             {
 104               printf ("#define INSN_SCHEDULING\n");
 105               have_sched = true;
 106             }
 107         }
 108     }
 109   puts ("\n#endif /* GCC_INSN_ATTR_COMMON_H */");
 110
 111   if (ferror (stdout) || fflush (stdout) || fclose (stdout))
 112     return FATAL_EXIT_CODE;
 113
 114   return SUCCESS_EXIT_CODE;
 115 }