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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.

*/

/* 	alphadiags.c,v 1.3 1995/06/28 10:19:06 john Exp	 */

#ifndef lint

static char vcid[] = "alphadiags.c,v 1.3 1995/06/28 10:19:06 john Exp";

#endif /* lint */

/*

  alphadiags.c

  This file contains functions to handle code diagnostics for 

  alpha/OSF1. (largely based on the mips installer version 

  'mipsdiags.c').

*/

/*

alphadiags.c,v

 * Revision 1.3  1995/06/28  10:19:06  john

 * Reformatting

 *

 * Revision 1.2  1995/05/23  10:52:24  john

 * Fix to non 64 bit machines

 *

 * Revision 1.1.1.1  1995/03/23  10:39:01  john

 * Entered into CVS

 *

 * Revision 1.7  1995/01/31  14:24:24  john

 * Various portability changes

 *

 * Revision 1.6  1995/01/26  13:36:38  john

 * Minor portability improvements

 *

*/

#include "config.h"

#include "common_types.h"

#include "exptypes.h"

#include "shapemacs.h"

#include "expmacs.h"

#include "exp.h"

#include "procrectypes.h"

#include "procrecs.h"

#include "tags.h"

#include "bitsmacs.h"

#include "diagtypes.h"

#include "xalloc.h"

#include "syms.h"

#include "diag_fns.h"

#include "locate.h"

#include "alphadiags.h"

#include "diagglob.h"

#include "mark_scope.h"

#include "ibinasm.h"

#include "out_ba.h"

#include "coder.h"

#include "cross.h"

#include "symbol.h"

#include "cross_config.h"

#ifndef CROSS_INCLUDE

#include <symconst.h>

#else

#include CROSS_INCLUDE/symconst.h>

#endif

extern FILE * as_file;

extern bool last_param PROTO_S ((exp e));

extern int currentfile;

/* our current fileno  */

extern int mainfile;

/* default fileno for no diags or shape output */

int *file_dnos;		/* dense nos for files */

filename * fds;

int nofds = 0;

int szfds = 0;

#if 0

void collect_files

    PROTO_N ( ( f ) )

    PROTO_T ( filename f )

{

  return;

}

void OUTPUT_DIAG_TAGS

  PROTO_Z ()

{

  return;

}

#endif

void collect_files

    PROTO_N ( ( f ) )

    PROTO_T ( filename f )

{

  if (nofds>=szfds) {

    fds = (filename*)xrealloc(fds, (size_t)(szfds+=5)*sizeof(filename));

  }

  fds[nofds++] = f;

}

int find_file

    PROTO_N ( ( f ) )

    PROTO_T ( filename f )

{

  int i;

  for(i=0; i<nofds; i++) {

    if (strcmp(f->file.ints.chars, fds[i]->file.ints.chars)==0) return i;

  }	

  return 0;

}

/* produce symnos for all text files in compilation */

void symnosforfiles

    PROTO_Z ()

{

  int   i;

  file_dnos = (int *) xcalloc (nofds, sizeof (int));

  for (i = 0; i < nofds; i++) {

    file_dnos[i] = new_lsym_d (fds[i]->file.ints.chars, 0, stFile, scText, 

			       (diag_type)0, i);

  }

  return;

}

/* used for testing whether o/p worked */

static  void x

    PROTO_N ( ( i ) )

    PROTO_T ( int i )

{

  if (i == EOF) {

    failer ("can't output");

    exit (EXIT_FAILURE);

  }

  return;

}

/* output .file directive for file i */

void stab_file

    PROTO_N ( ( i ) )

    PROTO_T ( int i )

{

  int l;

  if (currentfile == i)

    return;

  l = (int)strlen (fds[i]->file.ints.chars);

  if (as_file) {

    x (fprintf (as_file, "\t.file\t%d \"%s\"\n", file_dnos[i], 

		fds[i]->file.ints.chars+1));

  }

  out_value (file_dnos[i], ifile, make_INT64(0,l), 0);

  out_data (fds[i]->file.ints.chars, l);

  currentfile = i;

  return ;

}

int currentlno = -1;		/* the last line number output */

void stabd

    PROTO_N ( ( findex,lno ) )

    PROTO_T ( int findex X int lno )

{

  if (findex==currentfile && lno==currentlno) return;

  stab_file (findex);

  if (as_file)

    x (fprintf (as_file, "\t.loc\t%d %d\n", file_dnos[findex], lno));

  out_loc (file_dnos[findex], (unsigned)lno);

  currentlno = lno;

}

static char *lexlev = "0";	/* historic !!! */

void diagbr_open

    PROTO_N ( ( findex ) )

    PROTO_T ( int findex )

{

  int symno;

  stab_file (findex);

  symno = new_lsym_d ((char *) 0, 0, stBlock, scText, (diag_type)0,

      currentfile);

  lexlev[0]++;

  if (as_file){

    x (fprintf (as_file, "\t.bgnb\t%d\n", symno));

  }

  out_ent (symno, ibgnb, 0);

}

void diagbr_close

    PROTO_N ( ( findex ) )

    PROTO_T ( int findex )

{

  int symno;

  stab_file (findex);

  symno = new_lsym_d ((char *) 0, 0, stEnd, scText, (diag_type)0,

      currentfile);

  lexlev[0]--;

  if (as_file){

    x (fprintf (as_file, "\t.endb\t%d\n", symno));

  }

  out_ent (symno, iendb, 0);

}

/* 

   output appropriate rubbish to symbol table to indicate the declaration of a

   local identifier, nm, defined by id, displaced by disp; findex is the index

   of the file containing the declaration.  The text below gives o/p for

   identifiers allocated in registers; in fact, with current translator, 

   none are used by stab_local. I don't even know whether the MIPS dbx can 

   actually use them. 

*/

void stab_local

    PROTO_N ( ( nm,dt,ldid,disp,findex ) )

    PROTO_T ( char *nm X diag_type dt X exp ldid X int disp X int findex )

{

  int fs = frame_size >> 3;

  exp id = son(ldid);

  short   sc;

  int  v;

  disp+=no(ldid);

again: 

  if (name (id) == ident_tag) {

    if ((props (id) & defer_bit) == 0) {

      if ((props (id) & inreg_bits) != 0) {

	sc = scRegister;

	v = no (id);

	/*if (as_file){

	  x (fprintf (as_file, " # %s is in $%d\n", nm, v));

	  }*/

      }

      else if ((props (id) & infreg_bits) != 0) {

	sc = scRegister;

	v = (no (id) << 1) + float_register;

/*	  if (as_file)

	  x (fprintf (as_file, " # %s is in $f%d\n", nm, v - float_register));*/

      }

      else {

	v = ((no (id) & ~0x3f) >> 4) + (locals_offset >> 3) + disp / 8 - fs;

	sc = scAbs;

/*	  if (as_file)

	  x (fprintf (as_file,

	  " # %s is in %ld($fp)  == %ld($29)\n", nm,

	  v, v + fs));*/

      }

      (void)new_lsym_d (nm,v,/*(isparam(id))?stParam :*/stLocal,sc,dt,findex);

    }

    else {

      exp sn = son (id);

      int d = disp;

      while (sn != nilexp) {

	switch (name(sn)) {

	  case name_tag: {

	    disp = d + no (sn);

	    id = son (sn);

	    if (isvar (id)) dt = dt->data.ptr.object;

	    goto again;

	  }	

	  case reff_tag: {

	    d += no (sn);

	    sn = son (sn);

	    break;

	  }

	  case cont_tag: {

	    sn = son (sn);

	    break;

	  }

	  default: 

	  return;

	}

      }

    }

  }

}

void output_diag

    PROTO_N ( ( d, proc_no, e ) )

    PROTO_T ( diag_info *d X int proc_no X exp e )

{

  exp x;

  if (d->key == DIAG_INFO_SOURCE) {

    sourcemark * s = & d->data.source.beg;

    int f = find_file(s->file);

    stabd(f, s->line_no.nat_val.small_nat);

    return;

  }

  if (d->key != DIAG_INFO_ID) return;

  x = d->data.id_scope.access;

  if (isglob(son(x)) || no(son(x))==1) return;

  /* can't output global values as local names in dbx

     && not only diag use */

  mark_scope(e);

  if (props(e) & 0x80) {

    stabd(currentfile, currentlno+1); /* don't have proper lineno */

    diagbr_open(currentfile);

  }

  stab_local(d->data.id_scope.nme.ints.chars, d->data.id_scope.typ,

	     x,0,currentfile);

  if (last_param(son(x))) {

    stabd(currentfile, currentlno+1); /* don't have proper lineno */

  }    

  return;

}

void output_end_scope

    PROTO_N ( ( d,e ) )

    PROTO_T ( diag_info *d X exp e )

{

  if (d->key == DIAG_INFO_SOURCE) {

    sourcemark * s = & d->data.source.end;

    int f = find_file(s->file);

    int lno = s->line_no.nat_val.small_nat; 

    stabd(f, (lno==currentlno)?lno+1:lno); /*approx */

    return;

  }    	

  if (d -> key == DIAG_INFO_ID && props(e) & 0x80) {

    diagbr_close(currentfile);

  }  			    	 

}	

/*

  The following procs are concerned with expressing TDF

  types as dbx types.  The possible circularity of types and

  the vagaries of the type representation contribute to their

  complication.

*/

typedef struct {

  char *n;

  int  v;

  int   st;

  int   sc;

  diag_type s;

} tsym;

static int notsyms = 0;

static int nexttsym = 0;

static tsym * ats = (tsym *) 0;

/* 

   used to accumulate all the type reprs arising 

   from shapes in the program by calling addtsym .... 

*/

void addtsym

    PROTO_N ( ( n,v,st,sc,s ) )

    PROTO_T ( char *n X int v X int st X int sc X diag_type s )

{

  tsym * a;

  if (nexttsym >= notsyms) {

    ats = (tsym *) xrealloc ((void *) ats, (size_t)(nexttsym + 100) * sizeof (tsym));

    notsyms = nexttsym + 100;

  }

  a = &ats[nexttsym++];

  a -> n = n;

  a -> v = v;

  a -> st = st;

  a -> sc = sc;

  a -> s = s;

  return;

}

typedef struct {

  diag_type sutype;

  int   symindex;

} shauxt;

static int noshaux = 0;

int nextshaux = 0;

shauxt * shaux = (shauxt *) 0;

/* 

   used to remember all the indexes into the auxilliary 

   symbol table for all the shapes in the program 

*/

bool eq_sutype

    PROTO_N ( ( a,b ) )

    PROTO_T ( diag_type a X diag_type b )

{

  diag_field_list  fa;

  diag_field_list  fb;

  int j; 

  if (a==b) return 1;

  if (a->key != b->key) return 0;

  if (a->key != DIAG_TYPE_STRUCT && a->key != DIAG_TYPE_UNION) return 0;

   if (strcmp(a->data.t_struct.nme.ints.chars, b->data.t_struct.nme.ints.chars))

     return 0;

  fa = a->data.t_struct.fields;

  fb = b->data.t_struct.fields;

  if (fa->lastused != fb->lastused) return 0;

  for(j=fa->lastused-1; j>=0; j--) {

    diag_field sfa = (fa->array)[j];

    diag_field sfb = (fb->array)[j];

    if (strcmp(sfa->field_name.ints.chars, sfb->field_name.ints.chars))

      return 0;

  }

  return (bool)eq_shape(a->data.t_struct.tdf_shape,b->data.t_struct.tdf_shape);

}     

/* 

   finds the index into the auxilliary table for type s 

*/

int find_aux

    PROTO_N ( ( s ) )

    PROTO_T ( diag_type s )

{

  int   i;

  for (i = 0; i < nextshaux; i++) {

    if (eq_sutype(s, shaux[i].sutype) )

      return shaux[i].symindex;

  }

  return - 1;

}

/* 

   remembers ind as index into aux table for shape s 

*/

static void addaux

    PROTO_N ( ( s,ind ) )

    PROTO_T ( diag_type s X int ind )

{

  shauxt * x;

  if (nextshaux >= noshaux) {

    shaux = (shauxt *) xrealloc ((void *) shaux, 

				 (size_t)(nextshaux + 10) * sizeof (shauxt));

  }

  x = &shaux[nextshaux++];

  x -> sutype = s;

  x -> symindex = ind;

}

static diag_tagdef ** su_diags = (diag_tagdef**)0;

static long no_of_sus = 0;

static long leng_sus = 0;

void OUTPUT_DIAG_TAGS

    PROTO_Z ()

{

  /*collects structs & unions */ 

  diag_tagdef ** di = unit_ind_diagtags;

  long n = unit_no_of_diagtags;

  long i;

  long il = no_of_sus;

  for (i=0; i<n; ++i){

    diag_type d = di[i]->d_type;

    switch (d -> key){

      case DIAG_TYPE_STRUCT:

      case DIAG_TYPE_UNION: {

	int j;

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

	  if (eq_sutype(d, su_diags[j]->d_type)) break;

	}

	if (j!=il) break;

	if (no_of_sus >= leng_sus) {

	  su_diags = (diag_tagdef**)xrealloc(su_diags, 

				 (size_t)(leng_sus+=20)*sizeof(diag_tagdef*));

	}	

	su_diags[no_of_sus++] = di[i];

	break;

      }	

      default: break;

    }

  }	

  return;

}

/* 

   outputs symbol table info for all struct & union  in program 

*/

void stab_types

    PROTO_Z ()

{

  int i;

  int firsts = get_sym_index (mainfile);

  for (i = 0; i < no_of_sus; ++i) {/* treat struct shapes */

    int   j;

    diag_tagdef * sc = su_diags[i];

    switch (sc->d_type->key) {

      case DIAG_TYPE_STRUCT: 

      case DIAG_TYPE_UNION: {

	diag_field_list  fields = sc->d_type->data.t_struct.fields;

	shape s = sc->d_type->data.t_struct.tdf_shape;

	char * nme = sc->d_type->data.t_struct.nme.ints.chars;

	addaux(sc->d_type, nexttsym+firsts);

	addtsym(nme, shape_size(s)>>3, stBlock, scInfo, sc->d_type);

	for(j=fields->lastused-1; j>=0; j--) {

	  diag_field sf = (fields->array)[j];

	  addtsym(sf->field_name.ints.chars, no(sf->where), stMember, scInfo, 

		  sf->field_type); 

	}

	break;

      }

      default: ;

    } 

    addtsym ("", 0, stEnd, scInfo, (diag_type)0);

  }

  for (i = 0; i < nexttsym; i++) {/* output accumulated type info */

    tsym * t = &ats[i];

    (void) new_lsym (t -> n, t -> v, t -> st, t -> sc, t->s, mainfile);

  }

  for (i = 0; i < unit_diagvar_tab.lastused; ++i) {

  /* associated names of types */

    diag_descriptor * dd = unit_diagvar_tab.array+i;

    if (dd->key == DIAG_TYPEDEF_KEY) {

      (void)new_lsym_d(dd->data.typ.nme.ints.chars, 0, stTypedef, scInfo, 

		       dd->data.typ.new_type, mainfile); 

    }

  }

  free (ats);

  return;

}