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/*  This file is part of the program psim.

    Copyright (C) 1994-1998, Andrew Cagney <cagney@highland.com.au>

    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-semantics.h"

#include "gen-support.h"

static void

print_support_function_name (lf *file,

                             function_entry *function,

                             int is_function_definition)

{

  if (function->is_internal)

    {

      lf_print__function_type_function (file, print_semantic_function_type,

                                        "INLINE_SUPPORT",

                                        (is_function_definition ? "\n" : " "));

      print_function_name (file,

                           function->name,

                           NULL,

                           NULL,

                           NULL,

                           function_name_prefix_semantics);

      lf_printf (file, "\n(");

      lf_indent (file, +1);

      print_semantic_function_formal (file, 0);

      lf_indent (file, -1);

      lf_printf (file, ")");

      if (!is_function_definition)

        lf_printf (file, ";");

      lf_printf (file, "\n");

    }

  else

    {

      /* map the name onto a globally valid name */

      if (!is_function_definition

          && strcmp (options.module.support.prefix.l, "") != 0)

        {

          lf_indent_suppress (file);

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

                     function->name,

                     options.module.support.prefix.l,

                     function->name);

        }

      lf_print__function_type (file,

                               function->type,

                               "INLINE_SUPPORT",

                               (is_function_definition ? "\n" : " "));

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

                 options.module.support.prefix.l,

                 function->name);

      if (options.gen.smp)

        lf_printf (file,

                   "sim_cpu *cpu, %sinstruction_address cia, int MY_INDEX",

                   options.module.support.prefix.l);

      else

        lf_printf (file,

                   "SIM_DESC sd, %sinstruction_address cia, int MY_INDEX",

                   options.module.support.prefix.l);

      if (function->param != NULL

          && strlen (function->param) > 0)

        lf_printf (file, ", %s", function->param);

      lf_printf (file, ")%s", (is_function_definition ? "\n" : ";\n"));

    }

}

static void

support_h_function (lf *file,

                    function_entry *function,

                    void *data)

{

  ASSERT (function->type != NULL);

  print_support_function_name (file,

                               function,

                               0/*!is_definition*/);

  lf_printf(file, "\n");

}

extern void

gen_support_h (lf *file,

               insn_table *table)

{

  /* output the definition of `SD_'*/

  if (options.gen.smp)

    {

      lf_printf(file, "#define SD CPU_STATE (cpu)\n");

      lf_printf(file, "#define CPU cpu\n");

      lf_printf(file, "#define CPU_ cpu\n");

    }

  else

    {

      lf_printf(file, "#define SD sd\n");

      lf_printf(file, "#define CPU (STATE_CPU (sd, 0))\n");

      lf_printf(file, "#define CPU_ sd\n");

    }

  lf_printf(file, "#define CIA_ cia\n");

  if (options.gen.delayed_branch)

    {

      lf_printf(file, "#define CIA cia.ip\n");

      lf_printf(file, "/* #define NIA nia.dp -- do not define, ambigious */\n");

    }

  else

    {

      lf_printf(file, "#define CIA cia\n");

      lf_printf(file, "#define NIA nia\n");

    }

  lf_printf(file, "\n");

  lf_printf(file, "#define SD_ CPU_, CIA_, MY_INDEX\n");

  lf_printf(file, "#define _SD SD_ /* deprecated */\n");

  lf_printf(file, "\n");

  /* Map <PREFIX>_instruction_word and <PREFIX>_idecode_issue onto the

     shorter instruction_word and idecode_issue.  Map defined here as,

     name space problems are created when the name is defined in

     idecode.h */

  if (strcmp (options.module.idecode.prefix.l, "") != 0)

    {

      lf_indent_suppress (file);

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

                 "instruction_word",

                 options.module.idecode.prefix.l,

                 "instruction_word");

      lf_printf (file, "\n");

      lf_indent_suppress (file);

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

                 "idecode_issue",

                 options.module.idecode.prefix.l,

                 "idecode_issue");

      lf_printf (file, "\n");

    }

  /* output a declaration for all functions */

  function_entry_traverse (file, table->functions,

                           support_h_function,

                           NULL);

  lf_printf(file, "\n");

  lf_printf(file, "#if defined(SUPPORT_INLINE)\n");

  lf_printf(file, "# if ((SUPPORT_INLINE & INCLUDE_MODULE)\\\n");

  lf_printf(file, "      && (SUPPORT_INLINE & INCLUDED_BY_MODULE))\n");

  lf_printf(file, "#  include \"%ssupport.c\"\n", options.module.support.prefix.l);

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

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

}

static void

support_c_function (lf *file,

                    function_entry *function,

                    void *data)

{

  ASSERT (function->type != NULL);

  print_support_function_name (file,

                               function,

                               1/*!is_definition*/);

  lf_printf (file, "{\n");

  lf_indent (file, +2);

  if (function->code == NULL)

    error (function->line,

           "Function without body (or null statement)");

  lf_print__line_ref (file, function->code->line);

  table_print_code (file, function->code);

  if (function->is_internal)

    {

      lf_printf (file, "sim_engine_abort (SD, CPU, cia, \"Internal function must longjump\\n\");\n");

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

    }

  lf_indent (file, -2);

  lf_printf (file, "}\n");

  lf_print__internal_ref (file);

  lf_printf (file, "\n");

}

void

gen_support_c (lf *file,

               insn_table *table)

{

  lf_printf(file, "#include \"sim-main.h\"\n");

  lf_printf(file, "#include \"%sidecode.h\"\n", options.module.idecode.prefix.l);

  lf_printf(file, "#include \"%sitable.h\"\n", options.module.itable.prefix.l);

  lf_printf(file, "#include \"%ssupport.h\"\n", options.module.support.prefix.l);

  lf_printf(file, "\n");

  /* output a definition (c-code) for all functions */

  function_entry_traverse (file, table->functions,

                           support_c_function,

                           NULL);

}