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/* The IGEN simulator generator for GDB, the GNU Debugger.

   Copyright 2002 Free Software Foundation, Inc.

   Contributed by Andrew Cagney.

   This file is part of GDB.

   This program 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 2 of the License, or

   (at your option) any later version.

   This program 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 this program; if not, write to the Free Software

   Foundation, Inc., 59 Temple Place - Suite 330,

   Boston, MA 02111-1307, USA.  */

#include "misc.h"

#include "lf.h"

#include "table.h"

#include "filter.h"

#include "igen.h"

#include "ld-insn.h"

#include "ld-decode.h"

#include "gen.h"

#include "gen-itable.h"

#ifndef NULL

#define NULL 0

#endif

typedef struct _itable_info

{

  int sizeof_form;

  int sizeof_name;

  int sizeof_file;

}

itable_info;

static void

itable_h_insn (lf *file,

               insn_table *entry, insn_entry * instruction, void *data)

{

  int len;

  itable_info *info = data;

  lf_print__line_ref (file, instruction->line);

  lf_printf (file, "  ");

  print_function_name (file,

                       instruction->name,

                       instruction->format_name,

                       NULL, NULL, function_name_prefix_itable);

  lf_printf (file, ",\n");

  /* update summary info */

  len = strlen (instruction->format_name);

  if (info->sizeof_form <= len)

    info->sizeof_form = len + 1;

  len = strlen (instruction->name);

  if (info->sizeof_name <= len)

    info->sizeof_name = len + 1;

  len = strlen (filter_filename (instruction->line->file_name));

  if (info->sizeof_file <= len)

    info->sizeof_file = len + 1;

}

/* print the list of all the different options */

static void

itable_print_enum (lf *file, filter *set, char *name)

{

  char *elem;

  lf_printf (file, "typedef enum {\n");

  lf_indent (file, +2);

  for (elem = filter_next (set, "");

       elem != NULL; elem = filter_next (set, elem))

    {

      lf_printf (file, "%sitable_%s_%s,\n",

                 options.module.itable.prefix.l, name, elem);

      if (strlen (options.module.itable.prefix.l) > 0)

        {

          lf_indent_suppress (file);

          lf_printf (file, "#define itable_%s_%s %sitable_%s_%s\n",

                     name, elem, options.module.itable.prefix.l, name, elem);

        }

    }

  lf_printf (file, "nr_%sitable_%ss,\n", options.module.itable.prefix.l,

             name);

  lf_indent (file, -2);

  lf_printf (file, "} %sitable_%ss;\n", options.module.itable.prefix.l, name);

  if (strlen (options.module.itable.prefix.l) > 0)

    {

      lf_indent_suppress (file);

      lf_printf (file, "#define itable_%ss %sitable_%ss\n",

                 name, options.module.itable.prefix.l, name);

      lf_indent_suppress (file);

      lf_printf (file, "#define nr_itable_%ss nr_%sitable_%ss\n",

                 name, options.module.itable.prefix.l, name);

    }

}

/* print an array of the option names as strings */

static void

itable_print_names (lf *file, filter *set, char *name)

{

  char *elem;

  lf_printf (file, "const char *%sitable_%s_names[nr_%sitable_%ss + 1] = {\n",

             options.module.itable.prefix.l, name,

             options.module.itable.prefix.l, name);

  lf_indent (file, +2);

  for (elem = filter_next (set, "");

       elem != NULL; elem = filter_next (set, elem))

    {

      lf_printf (file, "\"%s\",\n", elem);

    }

  lf_printf (file, "0,\n");

  lf_indent (file, -2);

  lf_printf (file, "};\n");

}

extern void

gen_itable_h (lf *file, insn_table *isa)

{

  itable_info *info = ZALLOC (itable_info);

  /* output an enumerated type for each instruction */

  lf_printf (file, "typedef enum {\n");

  insn_table_traverse_insn (file, isa, itable_h_insn, info);

  lf_printf (file, "  nr_%sitable_entries,\n",

             options.module.itable.prefix.l);

  lf_printf (file, "} %sitable_index;\n", options.module.itable.prefix.l);

  lf_printf (file, "\n");

  /* output an enumeration type for each flag */

  itable_print_enum (file, isa->flags, "flag");

  lf_printf (file, "extern const char *%sitable_flag_names[];\n",

             options.module.itable.prefix.l);

  lf_printf (file, "\n");

  /* output an enumeration of all the possible options */

  itable_print_enum (file, isa->options, "option");

  lf_printf (file, "extern const char *%sitable_option_names[];\n",

             options.module.itable.prefix.l);

  lf_printf (file, "\n");

  /* output an enumeration of all the processor models */

  itable_print_enum (file, isa->model->processors, "processor");

  lf_printf (file, "extern const char *%sitable_processor_names[];\n",

             options.module.itable.prefix.l);

  lf_printf (file, "\n");

  /* output the table that contains the actual instruction info */

  lf_printf (file, "typedef struct _%sitable_instruction_info {\n",

             options.module.itable.prefix.l);

  lf_printf (file, "  %sitable_index nr;\n", options.module.itable.prefix.l);

  lf_printf (file, "  char *format;\n");

  lf_printf (file, "  char *form;\n");

  lf_printf (file, "  char *flags;\n");

  /* nr_itable_* may be zero, so we add 1 to avoid an

     illegal zero-sized array. */

  lf_printf (file, "  char flag[nr_%sitable_flags + 1];\n",

             options.module.itable.prefix.l);

  lf_printf (file, "  char *options;\n");

  lf_printf (file, "  char option[nr_%sitable_options + 1];\n",

             options.module.itable.prefix.l);

  lf_printf (file, "  char *processors;\n");

  lf_printf (file, "  char processor[nr_%sitable_processors + 1];\n",

             options.module.itable.prefix.l);

  lf_printf (file, "  char *name;\n");

  lf_printf (file, "  char *file;\n");

  lf_printf (file, "  int line_nr;\n");

  lf_printf (file, "} %sitable_info;\n", options.module.itable.prefix.l);

  lf_printf (file, "\n");

  lf_printf (file, "extern %sitable_info %sitable[nr_%sitable_entries];\n",

             options.module.itable.prefix.l, options.module.itable.prefix.l,

             options.module.itable.prefix.l);

  if (strlen (options.module.itable.prefix.l) > 0)

    {

      lf_indent_suppress (file);

      lf_printf (file, "#define itable %sitable\n",

                 options.module.itable.prefix.l);

    }

  lf_printf (file, "\n");

  /* output an enum defining the max size of various itable members */

  lf_printf (file, "enum {\n");

  lf_printf (file, "  sizeof_%sitable_form = %d,\n",

             options.module.itable.prefix.l, info->sizeof_form);

  lf_printf (file, "  sizeof_%sitable_name = %d,\n",

             options.module.itable.prefix.l, info->sizeof_name);

  lf_printf (file, "  sizeof_%sitable_file = %d,\n",

             options.module.itable.prefix.l, info->sizeof_file);

  lf_printf (file, "};\n");

}

/****************************************************************/

static void

itable_print_set (lf *file, filter *set, filter *members)

{

  char *elem;

  lf_printf (file, "\"");

  elem = filter_next (members, "");

  if (elem != NULL)

    {

      while (1)

        {

          lf_printf (file, "%s", elem);

          elem = filter_next (members, elem);

          if (elem == NULL)

            break;

          lf_printf (file, ",");

        }

    }

  lf_printf (file, "\",\n");

  lf_printf (file, "{");

  for (elem = filter_next (set, "");

       elem != NULL; elem = filter_next (set, elem))

    {

      if (filter_is_member (members, elem))

        {

          lf_printf (file, " 1,");

        }

      else

        {

          lf_printf (file, " 0,");

        }

    }

  /* always print a dummy element, to avoid empty initializers. */

  lf_printf (file, " 99 },\n");

}

static void

itable_c_insn (lf *file,

               insn_table *isa, insn_entry * instruction, void *data)

{

  lf_printf (file, "{ ");

  lf_indent (file, +2);

  print_function_name (file,

                       instruction->name,

                       instruction->format_name,

                       NULL, NULL, function_name_prefix_itable);

  lf_printf (file, ",\n");

  lf_printf (file, "\"");

  print_insn_words (file, instruction);

  lf_printf (file, "\",\n");

  lf_printf (file, "\"%s\",\n", instruction->format_name);

  itable_print_set (file, isa->flags, instruction->flags);

  itable_print_set (file, isa->options, instruction->options);

  itable_print_set (file, isa->model->processors, instruction->processors);

  lf_printf (file, "\"%s\",\n", instruction->name);

  lf_printf (file, "\"%s\",\n",

             filter_filename (instruction->line->file_name));

  lf_printf (file, "%d,\n", instruction->line->line_nr);

  lf_printf (file, "},\n");

  lf_indent (file, -2);

}

extern void

gen_itable_c (lf *file, insn_table *isa)

{

  /* leader */

  lf_printf (file, "#include \"%sitable.h\"\n",

             options.module.itable.prefix.l);

  lf_printf (file, "\n");

  /* FIXME - output model data??? */

  /* FIXME - output assembler data??? */

  /* output the flag, option and processor name tables */

  itable_print_names (file, isa->flags, "flag");

  itable_print_names (file, isa->options, "option");

  itable_print_names (file, isa->model->processors, "processor");

  /* output the table that contains the actual instruction info */

  lf_printf (file, "%sitable_info %sitable[nr_%sitable_entries] = {\n",

             options.module.itable.prefix.l,

             options.module.itable.prefix.l, options.module.itable.prefix.l);

  insn_table_traverse_insn (file, isa, itable_c_insn, NULL);

  lf_printf (file, "};\n");

}