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/*

    		 Crown Copyright (c) 1997

    This TenDRA(r) Computer Program is subject to Copyright

    owned by the United Kingdom Secretary of State for Defence

    acting through the Defence Evaluation and Research Agency

    (DERA).  It is made available to Recipients with a

    royalty-free licence for its use, reproduction, transfer

    to other parties and amendment for any purpose not excluding

    product development provided that any such use et cetera

    shall be deemed to be acceptance of the following conditions:-

        (1) Its Recipients shall ensure that this Notice is

        reproduced upon any copies or amended versions of it;

        (2) Any amended version of it shall be clearly marked to

        show both the nature of and the organisation responsible

        for the relevant amendment or amendments;

        (3) Its onward transfer from a recipient to another

        party shall be deemed to be that party's acceptance of

        these conditions;

        (4) DERA gives no warranty or assurance as to its

        quality or suitability for any purpose and DERA accepts

        no liability whatsoever in relation to any use to which

        it may be put.

*/

/* 	$Id: syms.c,v 1.2 1998/02/04 10:43:33 release Exp $	 */

#ifndef lint

static char vcid[] = "$Id: syms.c,v 1.2 1998/02/04 10:43:33 release Exp $";

#endif /* lint */

/*  

syms.c   - produce symbol numbers for binasm (dense numbers)

*/

/*

$Log: syms.c,v $

 * Revision 1.2  1998/02/04  10:43:33  release

 * Changes during testing.

 *

 * Revision 1.1.1.1  1998/01/17  15:56:01  release

 * First version to be checked into rolling release.

 *

 * Revision 1.3  1995/06/28  10:27:21  john

 * Changed type of currentfile

 *

 * Revision 1.2  1995/05/16  10:56:09  john

 * Changes for spec 3.1

 *

 * Revision 1.1.1.1  1995/03/23  10:39:29  john

 * Entered into CVS

 *

 * Revision 1.4  1995/03/23  10:15:53  john

 * Various fixes

 *

 * Revision 1.3  1995/01/26  13:51:42  john

 * Added include files and removed unused variable

 *

*/

#include "config.h"

#include "xalloc.h"

#include "flags.h"

#include "common_types.h"

#include "expmacs.h"

#include "shapemacs.h"

#include "syms.h"

#include "tags.h"

#include "common_types.h"

#include "main.h"

#include "alphadiags.h"

#include "symbol.h"

#include "cross_config.h"

extern int currentfile;

#ifndef CROSS_INCLUDE

#include <symconst.h>

#include <sym.h>

#else

#include CROSS_INCLUDE/symconst.h>

#include CROSS_INCLUDE/sym.h>

#endif

int  *symnos;

int  *tempsnos = (int *) 0;

int   next_temps = 0;

int   no_temps = 0;

/* 

   produce a symbolno for global given by ex in file filen 

*/

int symnoforext

    PROTO_N ( ( ex,filen ) )

    PROTO_T ( dec *ex X int filen )

{

  exp tg = ex -> dec_u.dec_val.dec_exp;

  shape s = ex -> dec_u.dec_val.dec_shape;

  diag_type dt = (diag_type)0; 

  short   symtype;

  short   symclass;

  long  v = 0;

  char *id = ex -> dec_u.dec_val.dec_id;

  if (diagnose) {		

    diag_descriptor * t = ex ->dec_u.dec_val.diag_info;

    if (t != (diag_descriptor *) 0) {

      id = t -> data.id.nme.ints.chars;

      dt = t -> data.id.new_type;

      filen = find_file(t ->data.id.whence.file);

    }

  }

  if (ex -> dec_u.dec_val.extnamed) {/* it is global */

    if (name (s) == prokhd && !isvar (tg) && (son(tg)==nilexp || 

					      name(son(tg))==proc_tag ||

					      name(son(tg))==general_proc_tag

					      )) {

    /* a declared procedure */

      symtype = stProc;

      if (son (tg) != nilexp){	/* a defined procedure will be output

				   later with this symbolno */

	return add_dense_no (0, 0);

      }

      symclass = scUndefined;

    }

    else {			/* some other global */

      ash a;

      symtype = stGlobal;

      symclass =

	(son (tg) != nilexp) ?

	((name (son (tg))) != clear_tag ? scData : scCommon)

	: scNil;

      a = ashof (s);

      v = (a.ashsize + 7) >> 3;

    }

    return new_esym_d (id, v, symtype, symclass, dt, filen);

  }

  else {			/* statics */

    if (name (s) == prokhd && !isvar (tg) && (son(tg)==nilexp||

					      name(son(tg))==proc_tag ||

					      name(son(tg))==general_proc_tag

					      )) {

/* a procedure */

      symtype = stStaticProc;

/*      if (son (tg) != nilexp)*/

	return add_dense_no (0, 0);

      /* a defined procedure will be output later with this symbolno */

/*      failer ("Static procs should have bodies ");*/

      symclass = scNil;

    }

    else {			/* other statics */

      symtype = stStatic;

      symclass = (son(tg)== nilexp || name (son (tg)) != clear_tag) 

                     ? scData : scCommon;

    }

    return new_lsym_d (id, v, symtype, symclass, dt, filen);

  }

}

/* 

   output symbolno for start of proc 

*/

int symnoforstart

    PROTO_N ( ( i,filen ) )

    PROTO_T ( int i X int filen )

{

  dec * ex = main_globals[i];

  short   symtype = (ex -> dec_u.dec_val.extnamed) ? stProc : stStaticProc;

  char *id = ex -> dec_u.dec_val.dec_id;

  diag_type dt = (diag_type)0;

  if (diagnose) {		

    diag_descriptor * t = ex ->dec_u.dec_val.diag_info;

    if (t != (diag_descriptor *) 0) {

      id = t ->data.id.nme.ints.chars;

      dt = t -> data.id.new_type;

      filen = find_file(t ->data.id.whence.file);

    }

  }

  return new_lsym (id, symnos[i], symtype, scText, dt, filen);

}

/* output symbolno for end of proc */

int symnoforend

    PROTO_N ( ( ex,filen ) )

    PROTO_T ( dec *ex X int filen )

{

  char *id = ex -> dec_u.dec_val.dec_id;

  diag_type dt = (diag_type)0;  

  if (diagnose) {		

    diag_descriptor * t = ex ->dec_u.dec_val.diag_info;

    if (t != (diag_descriptor *) 0) {

      id = t -> data.id.nme.ints.chars;

      dt = t -> data.id.new_type;

      filen = find_file(t -> data.id.whence.file);

    }

  }

  return new_lsym_d (id, 0, stEnd, scText, dt, filen);

}

/* 

   output symbol number for data_lab and remember it in tempsnos 

*/

int symnofordata

    PROTO_N ( ( data_lab ) )

    PROTO_T ( int data_lab )

{

  int   a = data_lab - 32;

  if (a >= no_temps) {

    tempsnos = (int *) xrealloc ((char *) tempsnos, (100 + a) * sizeof (int));

    no_temps = a + 100;

  }

  return (tempsnos[a] = add_dense_no (currentfile, 1048575 /* ???? */ ));

}