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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.

*/

#ifndef lint

static char vcid[] = "nil";

#endif /* lint */

/*

  symbol.c

  This file contains code to generate the alpha symbol table

  (the .t file).  This code is based on the MIPS translator file 

  new_symbol.c

*/

/*

$Log: symbol.c,v $

 * Revision 1.2  1998/02/04  10:43:32  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 1.4  1995/08/21  08:46:39  john

 * Changed include files

 *

 * Revision 1.3  1995/05/16  10:55:52  john

 * Cosmetic changes

 *

 * Revision 1.2  1995/04/07  11:06:12  john

 * Renamed some parameters

 *

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

 * Entered into CVS

 *

 * Revision 1.4  1995/01/31  14:26:22  john

 * Variour portability improvements

 *

 * Revision 1.3  1995/01/12  15:10:27  john

 * Changed error messages

 *

*/

#include "config.h"

#include "symtab.h" 	/* type definitions for translator 

			   produced debugging information 

			   to be incorporated into a .T file */

#include "bstack.h"

#include "makesymtab.h"

#include "xalloc.h"

#include "common_types.h"

#include "diagtypes.h"

#include "expmacs.h"

#include "symbol.h"

#include "type_to_aux.h"

#include "cross_config.h"

extern  char diagnose;

#ifndef CROSS_INCLUDE

#include <symconst.h>

#else

#include CROSS_INCLUDE/symconst.h>

#endif

/* Procedures to accumulate symbol table records for MIPS translator 

   new_lsym

   new_lsym_d

   new_esym

   new_esym_d

   and to output the table

   output_symtab(name)

   by R.R.R.  25/1/91	*/

int numfiles;

int numprocs;	/* provided by mipstrans in call to init */

DENSETAB *dense_numbers, *densenos;

STRINGS* extstrings, *external_strings;

ESYMS* esymlist, *external_symbols;

pSYMFDR fdrlist, file_desc_table;

LSYMS* local_symbols;

STRINGS* local_strings;

AUXTAB* aux_symbols;

BSTACK* blockstack;

int add_aux PROTO_S ((AUXU,int));

int* file_inds;

int* aux_inds;

int* str_inds;

int* sym_inds;

PROCSYM* proc_isym_inds;

int nosyms = 0;

int stringsize = 0;

int nostrings=0;

int noaux = 0;

int densind = 0;

int esymindex = 0;

int extind=0;	

void init_table_space

    PROTO_N ( ( noofiles,noprocs ) )

    PROTO_T ( int noofiles X int noprocs )

{

  int ind=0;

  AUXU nilaux;

  nilaux.isym=0;

  blockstack= (BSTACK*)xcalloc(noofiles,sizeof(BSTACK));

  if(noofiles==0) alphafail(NO_DIAGNOSTICS_IN_TDF);

  densenos=(DENSETAB*)xcalloc(1,sizeof(DENSETAB));

  densenos->num = 0;

  densenos->densenolist = (pDNR)xcalloc(DENSETABSIZE,sizeof(DNR));

  densenos->moredensenos= (DENSETAB*)0;

  dense_numbers=densenos;

  extstrings=(STRINGS*)xcalloc(1,sizeof(STRINGS));

  extstrings->str=(char*)xcalloc(STRINGTABSIZE,sizeof(char));

  extstrings->usage=0;

  extstrings->overspill=(STRINGS*)0;

  external_strings=extstrings;

  esymlist=(ESYMS*)xcalloc(1,sizeof(ESYMS));

  esymlist->symlist=(pEXTR)xcalloc(SYMTABSIZE,sizeof(EXTR));

  esymlist->noofsyms=0;

  esymlist->nextsyms=(ESYMS*)0;

  external_symbols=esymlist;

  numfiles=noofiles;

  numprocs=noprocs;

  file_inds =(int*)xcalloc(noofiles,sizeof(int));

  aux_inds =(int*)xcalloc(noofiles,sizeof(int));

  str_inds =(int*)xcalloc(noofiles,sizeof(int)); 

  sym_inds =(int*)xcalloc(noofiles,sizeof(int));

  proc_isym_inds =(PROCSYM*)xcalloc(noprocs,sizeof(PROCSYM));

  fdrlist = (pSYMFDR)xcalloc(noofiles,sizeof(SYMFDR));

  file_desc_table = fdrlist;

  local_symbols = (LSYMS*)xcalloc(noofiles,sizeof(LSYMS));

  local_symbols->symlist = (pSYMR)xcalloc(noofiles*SYMTABSIZE,sizeof(SYMR));

  local_strings = (STRINGS*)xcalloc(noofiles,sizeof(STRINGS));

  local_strings->str = (char*)xcalloc(noofiles*STRINGTABSIZE,sizeof(char));

  aux_symbols=(AUXTAB*)xcalloc(noofiles,sizeof(AUXTAB));

  aux_symbols->auxinfo=(pAUXU)xcalloc(noofiles*AUXTABSIZE,sizeof(AUXU));

  for (ind=0; ind<noofiles;ind++,fdrlist++){

    fdrlist->symbols=local_symbols+ind;

    fdrlist->filestr=local_strings+ind;

    fdrlist->auxtabs=aux_symbols+ind;

    fdrlist->proc_count=0;

    (local_symbols+ind)->symlist=local_symbols->symlist+ind*SYMTABSIZE;

    (local_strings+ind)->str=local_strings->str+ind*STRINGTABSIZE;

    (aux_symbols+ind)->auxinfo=aux_symbols->auxinfo+ind*AUXTABSIZE;

    add_aux(nilaux,ind);	/* for each file add nilaux so no 0 */

  }

}

void add_proc

    PROTO_N ( ( sympos,filenum ) )

    PROTO_T ( int sympos X int filenum )

{

  static int symcount=0;

  pSYMFDR fdrlist=file_desc_table+filenum;

  fdrlist->proc_count+=1;

  (proc_isym_inds+symcount)->procsymindex=sympos;

  (proc_isym_inds+symcount)->fnum=filenum;

  symcount++;

}

/*********************  STRING procedures  ********************/

int add_string

    PROTO_N ( ( str,list ) )

    PROTO_T ( char *str X STRINGS *list )

{

  int stringind=list->usage;

  int length = strlen(str)+1;

  while (list->overspill!=0){

    list=list->overspill;

    stringind+=list->usage;

  }

  if ((list->usage+length)>STRINGTABSIZE){

    list->overspill = (STRINGS*)xcalloc(1,sizeof(STRINGS));

    list=list->overspill;

    list->str=(char*)xcalloc(STRINGTABSIZE,sizeof(char));

    list->usage=length;

    strcpy(list->str,str);

  }

  else{  

    strcpy(list->str+list->usage,str);

    list->usage+=length;

  }

  return stringind;

}

int add_to_loc_strings

    PROTO_N ( ( locstr,index ) )

    PROTO_T ( char *locstr X int index )

{

  stringsize+=strlen(locstr)+1;

  nostrings++;

  return(add_string(locstr, local_strings+index));

}

int add_to_ext_strings

    PROTO_N ( ( extstr ) )

    PROTO_T ( char *extstr )

{

  int posind=extind;

  add_string(extstr, extstrings);

  extind+=strlen(extstr)+1;

  return(posind);

}

/******************  DENSE NUMBERS  ********************/

int add_dense_no

    PROTO_N ( ( rfd,index ) )

    PROTO_T ( int rfd X int index )

{

  DNR* curr_dense;

  DENSETAB* denseptr= densenos;

  while (denseptr->moredensenos){

    denseptr=denseptr->moredensenos;

  }

  if(denseptr->num==DENSETABSIZE){

    denseptr->moredensenos = (DENSETAB*)xcalloc(1,sizeof(DENSETAB));

    denseptr=denseptr->moredensenos;

    denseptr->num = 0;

    denseptr->densenolist = (pDNR)xcalloc(DENSETABSIZE,sizeof(DNR));

    denseptr->moredensenos = (DENSETAB*)0;

  }

  curr_dense=(denseptr->densenolist)+denseptr->num;

  curr_dense->rfd = rfd;

  curr_dense->index = index;

  denseptr->num+=1;

  densind++;

  return (densind-1);

}

DNR * get_dense_ptr

    PROTO_N ( ( densind ) )

    PROTO_T ( int densind )

{

  DENSETAB* denseptr = densenos;

  int densecount=denseptr->num;

  while (densecount<=densind){

    denseptr=denseptr->moredensenos;

    densecount+=denseptr->num;

  }

  return(denseptr->densenolist+(denseptr->num-(densecount-densind)));

}

/********************  SYMBOL PROCEDURES  ********************/

int get_sym_index

    PROTO_N ( ( ind ) )

    PROTO_T ( int ind )

{

  LSYMS* lsymlist=local_symbols+ind;

  int lsymindex = lsymlist->noofsyms;

  while (lsymlist->nextsyms!=0){

    lsymlist=lsymlist->nextsyms;

    lsymindex+=lsymlist->noofsyms;

  }	

  return (lsymindex);

}	

SYMR * get_sym_ptr

    PROTO_N ( ( ind,symind ) )

    PROTO_T ( int ind X int symind )

{

  LSYMS* lsymlist=local_symbols+ind;

  int symcount=lsymlist->noofsyms;

  while (symcount<=symind){

    lsymlist=lsymlist->nextsyms;

    symcount+=lsymlist->noofsyms;

  }

  return(lsymlist->symlist+(lsymlist->noofsyms-(symcount-symind)));

}

int add_lsym

    PROTO_N ( ( ind,newsym ) )

    PROTO_T ( int ind X SYMR *newsym )

{

  LSYMS* lsymlist=local_symbols+ind;

  int lsymindex = lsymlist->noofsyms;

  nosyms++;

  while (lsymlist->nextsyms!=0){

    lsymlist=lsymlist->nextsyms;

    lsymindex+=lsymlist->noofsyms;

  }

  if (lsymlist->noofsyms==SYMTABSIZE){

    lsymlist->nextsyms=(LSYMS*)xcalloc(1,sizeof(LSYMS));

    lsymlist=lsymlist->nextsyms;

    lsymlist->symlist=(pSYMR)xcalloc(SYMTABSIZE,sizeof(SYMR));

    lsymlist->noofsyms=0;

    lsymlist->nextsyms=(LSYMS*)0;

  }

  *(lsymlist->symlist+lsymlist->noofsyms)=(*newsym);

  lsymlist->noofsyms += 1;

  return (lsymindex);

}

int add_esym

    PROTO_N ( ( ind,newsym ) )

    PROTO_T ( int ind X SYMR *newsym )

{

  if (esymlist->noofsyms==SYMTABSIZE){

    esymlist->nextsyms=(ESYMS*)xcalloc(1,sizeof(ESYMS));

    esymlist=esymlist->nextsyms;

    esymlist->symlist=(pEXTR)xcalloc(SYMTABSIZE,sizeof(EXTR));

    esymlist->noofsyms=0;

    esymlist->nextsyms=(ESYMS*)0;

  }

  (esymlist->symlist+esymlist->noofsyms)->ifd = ind;

  (esymlist->symlist+esymlist->noofsyms)->asym=(*newsym);

  esymlist->noofsyms += 1;

  esymindex++;

  return(esymindex-1);

}	

AUXU* get_aux_ptr PROTO_S ((int, int));

int new_lsym

    PROTO_N ( ( chars,value,symtype,symclass,s,filenum ) )

    PROTO_T ( char *chars X int value X int symtype X int symclass X diag_type s X int filenum )

{

  SYMR newsym;

  AUXU nilaux;

  int strind, symindex;

  nilaux.isym=0;

  symindex = get_sym_index(filenum);

  newsym.value = value;

  newsym.st = symtype;

  newsym.sc = symclass;

/* do the following as a switch statment */

  if (symtype == stEnd){

    SYMSTR symstrind;

    int isymstart;

    symstrind = pop(blockstack+filenum);

    isymstart = symstrind.sym;

    if (symstrind.str>0)

    {newsym.iss = symstrind.str;}	

    else {newsym.iss = 0 ;}	

    if (isymstart<0){

      newsym.index=(-isymstart);

      get_aux_ptr(filenum,

		  get_sym_ptr(filenum, -isymstart)->index)->isym=symindex+1;

    }

    else{

      get_sym_ptr(filenum, isymstart)->index=symindex+1;

      newsym.index=isymstart;

    }

    /* (((local_symbols + filenum)->symlist)+newsym.index)->index = symindex+1; */

  }

  else if (symtype == stFile){

    add_aux(nilaux,filenum);

    strind=add_to_loc_strings(chars,filenum);

    newsym.iss = strind;

    push(symindex, strind, blockstack+filenum);

    /* newsym.index filled in later by stEnd  */

  }

  else if (symtype == stBlock){

    if (chars){strind=add_to_loc_strings(chars,filenum);}

    else {strind = 0;}

    push(symindex, strind, blockstack+filenum);

    newsym.iss = strind;

    /* newsym.index filled in later by stEnd  */

  }

  else if (symtype == stLabel /*|| symtype == stMember and enum???*/ ){

    newsym.index = 0;

    newsym.iss = add_to_loc_strings(chars,filenum);

  }

  else	if (symtype==stProc){

    DNR* procdense=get_dense_ptr(value);

    strind=add_to_loc_strings(chars,filenum);

    newsym.value=0;	/* not needed now */

/* add esym but with lsymindex as index not aux or isymMac */

    newsym.iss = add_to_ext_strings(chars);

    newsym.index=symindex;

    procdense->rfd=0x7fffffff;

    procdense->index=add_esym(filenum, &newsym);

    newsym.iss=strind;

    newsym.index=add_aux(nilaux,filenum);

    push(-symindex, strind, blockstack+filenum);

    /*AUX to be filled in at stEnd */

    add_proc(symindex,filenum);	/* all are scText */

    add_aux(nilaux,filenum);	/* add nil type !! */

  }

  else if (symtype==stStaticProc) {

    DNR* procdense=get_dense_ptr(value);

    strind=add_to_loc_strings(chars,filenum);

    newsym.iss=strind;

    newsym.value = 0;	/* not needed now */

/* add esym but with lsymindex as index not aux or isymMac */

    procdense->rfd=filenum;

    procdense->index=symindex;

    newsym.index=add_aux(nilaux,filenum);

    push(-symindex, strind, blockstack+filenum);

    add_proc(symindex, filenum);  

    add_aux(nilaux,filenum);	/* add nil type !! */

  }

  else if (!diagnose ){

    newsym.index = 1048575;

    newsym.iss = add_to_loc_strings(chars,filenum);

  }

  else{

    newsym.iss = add_to_loc_strings(chars,filenum);

    newsym.index = add_type_to_aux(s, filenum);

  }

  return(add_lsym (filenum, &newsym));

}

int new_lsym_d

    PROTO_N ( ( chars,value,symtype,symclass,s,filenum ) )

    PROTO_T ( char *chars X int value X int symtype X int symclass X diag_type s X int filenum )

{

  return(add_dense_no(filenum,new_lsym (chars, value, symtype, symclass,s, 

					filenum)));

}

int new_esym

    PROTO_N ( ( chars,value,symtype,symclass,s,filenum ) )

    PROTO_T ( char *chars X int value X int symtype X int symclass X diag_type s X int filenum )

{

  SYMR newsym;

  int strind=add_to_ext_strings(chars);

  newsym.iss = strind;

  newsym.value = value;

  newsym.st = symtype;

  newsym.reserved = 0;

  newsym.sc = symclass;

  if (((symtype==stProc) && (symclass==scNil ||symclass==scUndefined)) 

      || (!diagnose)){

    /* no diagnostics  */

    newsym.index=1048575;

    newsym.value=0;

  }

  else{

    newsym.index=add_type_to_aux(s,filenum);

  }

  return add_esym (filenum, &newsym);

}

int new_esym_d

    PROTO_N ( ( chars,value,symtype,symclass,s,filenum ) )

    PROTO_T ( char *chars X int value X int symtype X int symclass X diag_type s X int filenum )

{

  return(add_dense_no(0x7fffffff,new_esym(chars, value, symtype, symclass, s

					  , filenum)));

}

/********************* Auxillary information  ********************/

AUXU * get_aux_ptr

    PROTO_N ( ( index,auxind ) )

    PROTO_T ( int index X int auxind )

{

  AUXTAB* auxdata;

  int auxcount;

  auxdata=aux_symbols+index;

  auxcount=auxdata->num;

  while (auxcount<auxind){

    auxdata=auxdata->moreaux;  

    auxcount+=auxdata->num;

  }

  return(auxdata->auxinfo+(auxdata->num-(auxcount-auxind)));

}

int add_aux

    PROTO_N ( ( auxent,index ) )

    PROTO_T ( AUXU auxent X int index )

{

  AUXTAB* auxdata;

  int auxind;

  noaux++;

  auxdata=aux_symbols+index;

  auxind=auxdata->num;

  while (auxdata->moreaux!=0){

    auxdata=auxdata->moreaux;

    auxind+=auxdata->num;

  }

  if (auxdata->num==AUXTABSIZE){

    auxdata->moreaux=(AUXTAB*)xcalloc(1,sizeof(AUXTAB));

    auxdata=auxdata->moreaux;

    auxdata->auxinfo=(pAUXU)xcalloc(AUXTABSIZE,sizeof(AUXU));

    auxdata->moreaux=(AUXTAB*)0;

    auxdata->num=0;

  }

  *((auxdata->auxinfo)+auxdata->num) = auxent;

  auxdata->num+=1;

  auxind++;

  return (auxind-1);

}

int add_st_aux

    PROTO_N ( ( ind ) )

    PROTO_T ( int ind )

{

  AUXU straux;

  AUXU maxaux;

  int indaux;

  maxaux.count=0xffffffff;

  straux.ti.bt=btStruct;

  indaux=add_aux(straux, ind);

  add_aux(maxaux, ind);

  add_aux(maxaux, ind);

  return indaux;

}

int add_un_aux

    PROTO_N ( ( ind ) )

    PROTO_T ( int ind )

{

  AUXU uniaux;

  AUXU maxaux;

  int indaux;

  maxaux.count=0xffffffff;

  uniaux.ti.bt=btUnion;

  indaux=add_aux(uniaux, ind); 

  add_aux(maxaux, ind);

  add_aux(maxaux, ind);

  return indaux;

}

void output_symtab

    PROTO_N ( ( symfilename ) )

    PROTO_T ( char *symfilename )

{

  /* end all the files */

  int i;

  for (i=0;i<numfiles;i++){	/* might need the iss */

    new_lsym("",0,stEnd,scText,(diag_type)0,i);

  }

  makesymtab(external_strings, external_symbols, dense_numbers, 

	     file_desc_table, numfiles, symfilename, esymindex, nosyms, 

	     extind, stringsize, noaux, densind, proc_isym_inds, numprocs);

  return;

}