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/*

 * Copyright (c) 2002-2005 The TenDRA Project <http://www.tendra.org/>.

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *

 * 1. Redistributions of source code must retain the above copyright notice,

 *    this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright notice,

 *    this list of conditions and the following disclaimer in the documentation

 *    and/or other materials provided with the distribution.

 * 3. Neither the name of The TenDRA Project nor the names of its contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific, prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS

 * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;

 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,

 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR

 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF

 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 *

 * $Id$

 */

/*

    		 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(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

(filename f)

{

  return;

}

void OUTPUT_DIAG_TAGS

(void)

{

  return;

}

#endif

void collect_files

(filename f)

{

  if (nofds>=szfds) {

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

  }

  fds[nofds++] = f;

}

int find_file

(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

(void)

{

  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

(int i)

{

  if (i == EOF) {

    failer("can't output");

    exit(EXIT_FAILURE);

  }

  return;

}

/* output .file directive for file i */

void stab_file

(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

(int findex, 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

(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

(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

(char *nm, diag_type dt, exp ldid, int disp, 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

(diag_info *d, int proc_no, 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

(diag_info *d, 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

(char *n, int v, int st, int sc, 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

(diag_type a, 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

(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

(diag_type s, 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

(void)

{

  /*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

(void)

{

  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;

}