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/*
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 * Copyright (c) 2002-2006 The TenDRA Project <http://www.tendra.org/>.
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions are met:
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 *
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 * 1. Redistributions of source code must retain the above copyright notice,
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 *    this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright notice,
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 *    this list of conditions and the following disclaimer in the documentation
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 *    and/or other materials provided with the distribution.
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 * 3. Neither the name of The TenDRA Project nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific, prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
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 * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
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 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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 * EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 *
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 * $Id$
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 */
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/*
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/*
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    		 Crown Copyright (c) 1997
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    		 Crown Copyright (c) 1997
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    This TenDRA(r) Computer Program is subject to Copyright
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    This TenDRA(r) Computer Program is subject to Copyright
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    owned by the United Kingdom Secretary of State for Defence
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    owned by the United Kingdom Secretary of State for Defence
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/************************************************************************
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/************************************************************************
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  Make an exp representing the contents of an external tag with
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  Make an exp representing the contents of an external tag with
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  name n of shape s and variable if v.
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  name n of shape s and variable if v.
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 ************************************************************************/
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 ************************************************************************/
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exp make_extn
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exp
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    PROTO_N ( ( n, s, v ) )
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    PROTO_T ( char* n X shape s X int v )
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make_extn(char* n, shape s, int v)
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{
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{
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  dec * g = alloc_nof ( dec, 1 ) ;
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	dec * g = alloc_nof(dec, 1);
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  exp id = getexp (s, 0, 1, 0, 0, 0, 0, ident_tag);
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	exp id = getexp(s, 0, 1, 0, 0, 0, 0, ident_tag);
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  exp nme = getexp (s, 0, 1, id, 0, 0, 0, name_tag);
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	exp nme = getexp(s, 0, 1, id, 0, 0, 0, name_tag);
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  setglob (id);
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	setglob(id);
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  if (v) {
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	if (v) {
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     setvar(id);
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		setvar(id);
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  }
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	}
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  brog(id) = g;
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	brog(id) = g;
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  g -> dec_u.dec_val.dec_exp = id;
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	g -> dec_u.dec_val.dec_exp = id;
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  g -> dec_u.dec_val.dec_id = n;
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	g -> dec_u.dec_val.dec_id = n;
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  g -> dec_u.dec_val.extnamed = 1;
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	g -> dec_u.dec_val.extnamed = 1;
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  return (nme);
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	return (nme);
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}
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}
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/************************************************************************
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/************************************************************************
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  Make an exp representing a dummy double destination used to force a
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  Make an exp representing a dummy double destination used to force a
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  floating point overflow (if any) for expression with zero destination.
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  floating point overflow (if any) for expression with zero destination.
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 ************************************************************************/
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 ************************************************************************/
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exp
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exp get_dummy_double_dest
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get_dummy_double_dest(void)
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    PROTO_Z ()
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{
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{
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   return (make_extn("___m68k_dummy_double", doublesh, 1));
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	return (make_extn("___m68k_dummy_double", doublesh, 1));
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}
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}
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/************************************************************************
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/************************************************************************
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  Make an exp representing the stack limit
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  Make an exp representing the stack limit
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 ************************************************************************/
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 ************************************************************************/
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exp
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exp get_stack_limit
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get_stack_limit(void)
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    PROTO_Z ()
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{
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{
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   return make_extn ("___m68k_stack_limit", ulongsh, 1);
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	return make_extn("___m68k_stack_limit", ulongsh, 1);
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}
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}
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/************************************************************************
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/************************************************************************
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  Make an exp representing the error handler
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  Make an exp representing the error handler
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 ************************************************************************/
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 ************************************************************************/
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exp
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exp get_error_handler
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get_error_handler(void)
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    PROTO_Z ()
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{
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{
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   return make_extn ("___m68k_errhandler", ulongsh, 1);
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	return make_extn("___m68k_errhandler", ulongsh, 1);
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}
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}
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/************************************************************************
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/************************************************************************
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  Make an exp representing env_size
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  Make an exp representing env_size
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 ************************************************************************/
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 ************************************************************************/
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exp get_env_size
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exp
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    PROTO_N ( ( decl ) )
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    PROTO_T ( dec *decl )
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get_env_size(dec *decl)
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{
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{
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   /* allocate space for 10 digits 2 prefix characters and a null */
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	/* allocate space for 10 digits 2 prefix characters and a null */
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   char* lab_name = alloc_nof ( char, 13 ) ;
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	char* lab_name = alloc_nof(char, 13);
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   sprintf(lab_name, "#%c%lu", LPREFIX, (unsigned long) decl);
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	sprintf(lab_name, "#%c%lu", LPREFIX,(unsigned long)decl);
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   return make_extn (lab_name, ulongsh, 1);
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	return make_extn(lab_name, ulongsh, 1);
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}
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}
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