gcc/gencodes.c

   1 /* Generate from machine description:
   2    - some macros CODE_FOR_... giving the insn_code_number value
   3    for each of the defined standard insn names.
   4    Copyright (C) 1987, 1991, 1995, 1998,
   5    1999, 2000, 2001 Free Software Foundation, Inc.
   6
   7 This file is part of GCC.
   8
   9 GCC is free software; you can redistribute it and/or modify it under
  10 the terms of the GNU General Public License as published by the Free
  11 Software Foundation; either version 2, or (at your option) any later
  12 version.
  13
  14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  17 for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with GCC; see the file COPYING.  If not, write to the Free
  21 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  22 02111-1307, USA.  */
  23
  24
  25 #include "hconfig.h"
  26 #include "system.h"
  27 #include "rtl.h"
  28 #include "errors.h"
  29 #include "gensupport.h"
  30
  31 static void gen_insn PARAMS ((const char *, int));
  32
  33 static void
  34 gen_insn (name, code)
  35      const char *name;
  36      int code;
  37 {
  38   /* Don't mention instructions whose names are the null string
  39      or begin with '*'.  They are in the machine description just
  40      to be recognized.  */
  41   if (name[0] != 0 && name[0] != '*')
  42     printf ("  CODE_FOR_%s = %d,\n", name, code);
  43 }
  44
  45 extern int main PARAMS ((int, char **));
  46
  47 int
  48 main (argc, argv)
  49      int argc;
  50      char **argv;
  51 {
  52   rtx desc;
  53
  54   progname = "gencodes";
  55
  56   if (argc <= 1)
  57     fatal ("No input file name.");
  58
  59   if (init_md_reader (argv[1]) != SUCCESS_EXIT_CODE)
  60     return (FATAL_EXIT_CODE);
  61
  62   puts ("\
  63 /* Generated automatically by the program `gencodes'\n\
  64    from the machine description file `md'.  */\n\
  65 \n\
  66 #ifndef GCC_INSN_CODES_H\n\
  67 #define GCC_INSN_CODES_H\n\
  68 \n\
  69 enum insn_code {");
  70
  71   /* Read the machine description.  */
  72
  73   while (1)
  74     {
  75       int line_no;
  76       int insn_code_number;
  77
  78       desc = read_md_rtx (&line_no, &insn_code_number);
  79       if (desc == NULL)
  80         break;
  81
  82       if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND)
  83         gen_insn (XSTR (desc, 0), insn_code_number);
  84     }
  85
  86   puts ("CODE_FOR_nothing\n\
  87 };\n\
  88 \n\
  89 #endif /* GCC_INSN_CODES_H */");
  90
  91   if (ferror (stdout) || fflush (stdout) || fclose (stdout))
  92     return FATAL_EXIT_CODE;
  93
  94   return SUCCESS_EXIT_CODE;
  95 }
  96
  97 /* Define this so we can link with print-rtl.o to get debug_rtx function.  */
  98
  99 const char *
 100 get_insn_name (code)
 101      int code ATTRIBUTE_UNUSED;
 102 {
 103   return NULL;
 104 }