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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: makesymtab.c,v 1.2 1998/02/04 10:43:31 release Exp $	 */

#ifndef lint

static char vcid[] = "$Id: makesymtab.c,v 1.2 1998/02/04 10:43:31 release Exp $";

#endif /* lint */

#include "config.h"

#include "symtab.h"	

#include "makesymtab.h"	

#include "xalloc.h"

#include "cross_config.h"

/* type definitions for translator produced debugging 

   information to be incorporated into a .T file  */

#ifndef CROSS_INCLUDE

#include <symconst.h>

#else

#include CROSS_INCLUDE/symconst.h>

#endif

/*

$Log: makesymtab.c,v $

 * Revision 1.2  1998/02/04  10:43:31  release

 * Changes during testing.

 *

 * Revision 1.1.1.1  1998/01/17  15:56:00  release

 * First version to be checked into rolling release.

 *

 * Revision 1.3  1995/06/28  10:25:22  john

 * Changed value in file header

 *

 * Revision 1.2  1995/05/23  10:57:04  john

 * Reformatting

 *

 * Revision 1.1.1.1  1995/03/23  10:39:30  john

 * Entered into CVS

 *

 * Revision 1.6  1995/01/26  13:44:02  john

 * Removed unused variables and fixed memory allocation

 *

 * Revision 1.5  1995/01/12  15:09:35  john

 * Generalised magic number

 *

*/

extern char diagnose;

long count_syms

    PROTO_N ( ( symlist ) )

    PROTO_T ( LSYMS *symlist )

{

  long symindex = symlist->noofsyms;

  while (symlist->nextsyms!=0){  

    symlist=symlist->nextsyms;

    symindex+=symlist->noofsyms;

  }

  return symindex;

}

long count_strings

    PROTO_N ( ( list ) )

    PROTO_T ( STRINGS *list )

{

  long stringind=list->usage;

  while (list->overspill!=0){

    list=list->overspill;

    stringind+=list->usage;

  }

  return stringind;

}

long count_aux

    PROTO_N ( ( auxdata ) )

    PROTO_T ( AUXTAB *auxdata )

{

  long auxcount=auxdata->num;

  while (auxdata->moreaux!=0){

    auxdata=auxdata->moreaux;

    auxcount+=auxdata->num;

  }	

  return auxcount;

}

#define MAJOR_ASSEMBLER_VERSION 3

#define MINOR_ASSEMBLER_VERSION 11

/* 

   Function to make a symbol table from various components. 

   Sets up a .T file for use by as1 (this function is called 

   from new_symbol.c using output_symtab(name of .T file). )

   by R.R.R  3/12/90  

*/

void makesymtab

    PROTO_N ( ( extstrings,extsymbols,densenos,filedescs,numfiles,

		symtabname,noextsyms,nosyms,extstringsize,stringsize,

		noaux,densind,procinds,noprocs ) )

    PROTO_T ( STRINGS *extstrings X ESYMS* extsymbols X DENSETAB* densenos X

	      pSYMFDR filedescs X int numfiles X char* symtabname X

	      int noextsyms X int nosyms X int extstringsize X

	      int stringsize X int noaux X int densind X

	      PROCSYM* procinds X int noprocs )

{

/* 

   function to produce a symbol table (.T file), from information 

   supplied by the translator, including TDF diagnostics. 

   The output file and the binary assembler file (.G , made by 

   as0 on a *.s file) can then be passed to as1 

*/

  LSYMS * symlist;

  HDRR symhdrout;				/* symbolic header */	

  int i,j;

  FDR fdrtab;

  long stroff=0;

  long symoff=0;

  long procoff=0;

  long auxoff=0;

  PDR* pdr_ptr;			

  STRINGS* tempstrings;

  AUXTAB* auxdata;

  pSYMFDR tempfileptr;

  FILE* sym_tab_file = fopen(symtabname,"w");

/**************  set up new symbolic header  **********************/

  symhdrout.magic = magicSym;	/* defined in symconst.h */

  symhdrout.vstamp = MAJOR_ASSEMBLER_VERSION*256+MINOR_ASSEMBLER_VERSION;

  symhdrout.ilineMax = 0;

  symhdrout.cbLine = 0;

  symhdrout.cbLineOffset = 0;

  symhdrout.ipdMax = noprocs;

  symhdrout.cbPdOffset = (long)sizeof(HDRR);

  symhdrout.isymMax = nosyms;

  symhdrout.cbSymOffset = symhdrout.cbPdOffset + noprocs*sizeof(PDR);

  symhdrout.ioptMax = 0;

  symhdrout.cbOptOffset = 0;

  symhdrout.iauxMax = noaux;

  symhdrout.cbAuxOffset = symhdrout.cbSymOffset + nosyms*sizeof(SYMR);

  symhdrout.issMax = stringsize;

  symhdrout.cbSsOffset = symhdrout.cbAuxOffset + noaux*sizeof(AUXU);

  symhdrout.issExtMax = extstringsize;

  symhdrout.cbSsExtOffset = symhdrout.cbSsOffset + stringsize;

  symhdrout.ifdMax = numfiles;

  symhdrout.cbFdOffset = symhdrout.cbSsExtOffset + extstringsize;

  symhdrout.crfd = 0;

  symhdrout.cbRfdOffset = 0;	/* something may need to be done here */

  symhdrout.iextMax = noextsyms;

  symhdrout.cbExtOffset = symhdrout.cbFdOffset + symhdrout.ifdMax*sizeof(FDR);

/* Dense numbers */

  symhdrout.idnMax = densind;

  symhdrout.cbDnOffset = symhdrout.cbExtOffset + symhdrout.iextMax*sizeof(EXTR);

/* write header to output file */

  fwrite(&symhdrout,sizeof(HDRR),1,sym_tab_file);

/********************  header completed  *************************/

/**************** write the tables to the file  ******************/

  tempfileptr=filedescs;

/* initialise proc info */

  pdr_ptr=(PDR*)xcalloc(1,sizeof(PDR));

  for (j=0;j<numfiles;j++){

    PROCSYM* procindptr=procinds;

    for (i=1;i<=noprocs;i++,procindptr++){

      if (procindptr->fnum==j){

	pdr_ptr->isym=procindptr->procsymindex;

	fwrite(pdr_ptr,sizeof(PDR),1,sym_tab_file);

      }

    }

  }

/* write local symbols */

  for (i=1;i<=numfiles;i++,tempfileptr++){

    symlist=tempfileptr->symbols;

    while (symlist){

      fwrite(symlist->symlist,sizeof(SYMR), symlist->noofsyms, sym_tab_file);

      symlist=symlist->nextsyms;

    }

  }

/* write auxillary symbol entries */

  tempfileptr=filedescs;

  for (i=1;i<=numfiles;i++,tempfileptr++){

    auxdata=tempfileptr->auxtabs;

    while (auxdata){

      fwrite(auxdata->auxinfo,sizeof(AUXU),auxdata->num, sym_tab_file);

      auxdata=auxdata->moreaux;

    }

  }

/* write local strings */

  tempfileptr=filedescs;

  for (i=1;i<=numfiles;i++,tempfileptr++){

    tempstrings = tempfileptr->filestr;

    while (tempstrings){

      fwrite(tempstrings->str, sizeof(char), tempstrings->usage,sym_tab_file);

      tempstrings=tempstrings->overspill;

    }	

  }

/* write external strings */

  tempstrings=extstrings;

  while (tempstrings){

    fwrite(tempstrings->str, sizeof(char), tempstrings->usage,sym_tab_file);

    tempstrings=tempstrings->overspill;

  }

/* write file descriptors */

  tempfileptr=filedescs;

  for(i=1;i<=numfiles;i++,tempfileptr++){

    long count;

    fdrtab.adr=0;

    fdrtab.rss=1;	/* source file name at start of lsymbols */

    fdrtab.issBase = stroff;

    count= count_strings(tempfileptr->filestr);

    stroff+=count;

    fdrtab.cbSs=count;

    count=count_syms(tempfileptr->symbols);

    fdrtab.isymBase = symoff;

    symoff+=count;

    fdrtab.csym=count;

    fdrtab.ilineBase=0;

    fdrtab.cline=0;

    fdrtab.ioptBase=0;

    fdrtab.copt=0;

    fdrtab.ipdFirst=procoff;

    procoff+=tempfileptr->proc_count;

    fdrtab.cpd = tempfileptr->proc_count;

    fdrtab.iauxBase = auxoff;

    count=count_aux(tempfileptr->auxtabs);

    auxoff+=count;

    fdrtab.caux=count;

    fdrtab.rfdBase=0;

    fdrtab.crfd=0;

    fdrtab.lang=langC;	/* C ,see symconst.h  */

    fdrtab.fMerge=0;	/* 1 for .h files I think */

    fdrtab.fReadin=0;

    fdrtab.fBigendian=0;

    fdrtab.glevel= diagnose?GLEVEL_2 : GLEVEL_0;

    fdrtab.reserved=0;	/* what else ! */

    fdrtab.cbLineOffset=0;	/* ??? */

    fdrtab.cbLine=0;	/* ??? */

    fwrite(&fdrtab,sizeof(FDR),1,sym_tab_file);

  }

/*appears to write the right stuff so is it the right place?? */

/* write external symbols */

  while (extsymbols){

    fwrite(extsymbols->symlist, sizeof(EXTR), extsymbols->noofsyms, 

	   sym_tab_file);

    extsymbols=extsymbols->nextsyms;

  }

/* write dense nos */

  while (densenos){

    fwrite(densenos->densenolist,sizeof(DNR),densenos->num,sym_tab_file);

    densenos=densenos->moredensenos;

  }

  fclose(sym_tab_file);

  return;

}