Subversion Repositories openrisc_2011-10-31

/* Generate from machine description:

   - some macros CODE_FOR_... giving the insn_code_number value

   for each of the defined standard insn names.

   Copyright (C) 1987, 1991, 1995, 1998, 1999, 2000, 2001, 2003,

   2004, 2007  Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify it under

the terms of the GNU General Public License as published by the Free

Software Foundation; either version 3, or (at your option) any later

version.

GCC is distributed in the hope that it will be useful, but WITHOUT ANY

WARRANTY; without even the implied warranty of MERCHANTABILITY or

FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

for more details.

You should have received a copy of the GNU General Public License

along with GCC; see the file COPYING3.  If not see

<http://www.gnu.org/licenses/>.  */

#include "bconfig.h"

#include "system.h"

#include "coretypes.h"

#include "tm.h"

#include "rtl.h"

#include "errors.h"

#include "gensupport.h"

static void

gen_insn (rtx insn, int code)

{

  const char *name = XSTR (insn, 0);

  int truth = maybe_eval_c_test (XSTR (insn, 2));

  /* Don't mention instructions whose names are the null string

     or begin with '*'.  They are in the machine description just

     to be recognized.  */

  if (name[0] != 0 && name[0] != '*')

    {

      if (truth == 0)

        printf ("#define CODE_FOR_%s CODE_FOR_nothing\n", name);

      else

        printf ("  CODE_FOR_%s = %d,\n", name, code);

    }

}

int

main (int argc, char **argv)

{

  rtx desc;

  progname = "gencodes";

  /* We need to see all the possibilities.  Elided insns may have

     direct references to CODE_FOR_xxx in C code.  */

  insn_elision = 0;

  if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE)

    return (FATAL_EXIT_CODE);

  puts ("\

/* Generated automatically by the program `gencodes'\n\

   from the machine description file `md'.  */\n\

\n\

#ifndef GCC_INSN_CODES_H\n\

#define GCC_INSN_CODES_H\n\

\n\

enum insn_code {");

  /* Read the machine description.  */

  while (1)

    {

      int line_no;

      int insn_code_number;

      desc = read_md_rtx (&line_no, &insn_code_number);

      if (desc == NULL)

        break;

      if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND)

        gen_insn (desc, insn_code_number);

    }

  puts ("  CODE_FOR_nothing\n\

};\n\

\n\

#endif /* GCC_INSN_CODES_H */");

  if (ferror (stdout) || fflush (stdout) || fclose (stdout))

    return FATAL_EXIT_CODE;

  return SUCCESS_EXIT_CODE;

}