[deliverable/binutils-gdb.git] / binutils / srconv.c

/* srconv.c -- Sysroff conversion program
   Copyright (C) 1994, 95, 96, 98, 99, 2000 Free Software Foundation, Inc.

   This file is part of GNU Binutils.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
   02111-1307, USA.  */

/* Written by Steve Chamberlain (sac@cygnus.com)

   This program can be used to convert a coff object file
   into a Hitachi OM/LM (Sysroff) format.

   All debugging information is preserved */

#include <bfd.h>
#include "bucomm.h"
#include "sysroff.h"
#include "coffgrok.h"
#include <libiberty.h>
#include <getopt.h>

#include "coff/internal.h"
#include "../bfd/libcoff.h"

#define PROGRAM_VERSION "1.5"
/*#define FOOP1 1 */

static int addrsize;
static char *toolname;
static char **rnames;

static void wr_cs ();
static void walk_tree_scope ();
static void wr_globals ();
static int find_base ();

static FILE *file;
static bfd *abfd;
static int debug = 0;
static int quick = 0;
static int noprescan = 0;
static struct coff_ofile *tree;
/* Obsolete ?? 
   static int absolute_p;
 */

static int segmented_p;
static int code;

static int ids1[20000];
static int ids2[20000];

static int base1 = 0x18;
static int base2 = 0x2018;

static int
get_member_id (x)
     int x;
{
  if (ids2[x])
    {
      return ids2[x];
    }
  ids2[x] = base2++;
  return ids2[x];
}

static int
get_ordinary_id (x)
     int x;
{
  if (ids1[x])
    {
      return ids1[x];
    }
  ids1[x] = base1++;
  return ids1[x];
}
static char *
section_translate (n)
     char *n;
{
  if (strcmp (n, ".text") == 0)
    return "P";
  if (strcmp (n, ".data") == 0)
    return "D";
  if (strcmp (n, ".bss") == 0)
    return "B";
  return n;
}


#define DATE "940201073000";	/* Just a time on my birthday */


static
char *
strip_suffix (name)
     char *name;
{
  int i;
  char *res;
  for (i = 0; name[i] != 0 && name[i] != '.'; i++)
    ;
  res = (char *) xmalloc (i + 1);
  memcpy (res, name, i);
  res[i] = 0;
  return res;
}


/* IT LEN stuff CS */
static void
checksum (file, ptr, size, code)
     FILE *file;
     char *ptr;
     int size;
     int code;
{
  int j;
  int last;
  int sum = 0;
  int bytes = size / 8;
  last = !(code & 0xff00);
  if (size & 0x7)
    abort ();
  ptr[0] = code | (last ? 0x80 : 0);
  ptr[1] = bytes + 1;

  for (j = 0; j < bytes; j++)
    {
      sum += ptr[j];
    }
  /* Glue on a checksum too */
  ptr[bytes] = ~sum;
  fwrite (ptr, bytes + 1, 1, file);
}


static void
writeINT (n, ptr, idx, size, file)
     int n;
     char *ptr;
     int *idx;
     int size;
     FILE *file;
{
  int byte = *idx / 8;

  if (size == -2)
    size = addrsize;
  else if (size == -1)
    size = 0;

  if (byte > 240)
    {
      /* Lets write out that record and do another one */
      checksum (file, ptr, *idx, code | 0x1000);
      *idx = 16;
      byte = *idx / 8;
    }
  switch (size)
    {
    case 0:
      break;
    case 1:
      ptr[byte] = n;
      break;
    case 2:
      ptr[byte + 0] = n >> 8;
      ptr[byte + 1] = n;
      break;
    case 4:
      ptr[byte + 0] = n >> 24;
      ptr[byte + 1] = n >> 16;
      ptr[byte + 2] = n >> 8;
      ptr[byte + 3] = n >> 0;
      break;
    default:
      abort ();
    }
  *idx += size * 8;
}


static void
writeBITS (val, ptr, idx, size)
     int val;
     char *ptr;
     int *idx;
     int size;
{
  int byte = *idx / 8;
  int bit = *idx % 8;
  int old;
  *idx += size;

  old = ptr[byte];
  /* Turn off all about to change bits */
  old &= ~((~0 >> (8 - bit - size)) & ((1 << size) - 1));
  /* Turn on the bits we want */
  old |= (val & ((1 << size) - 1)) << (8 - bit - size);
  ptr[byte] = old;
}

static void
writeBARRAY (data, ptr, idx, size, file)
     barray data;
     char *ptr;
     int *idx;
     int size ATTRIBUTE_UNUSED;
     FILE *file;
{
  int i;
  writeINT (data.len, ptr, idx, 1, file);
  for (i = 0; i < data.len; i++)
    {
      writeINT (data.data[i], ptr, idx, 1, file);
    }
}


static void
writeCHARS (string, ptr, idx, size, file)
     char *string;
     char *ptr;
     int *idx;
     int size;
     FILE *file;
{
  int i = *idx / 8;

  if (i > 240)
    {
      /* Lets write out that record and do another one */
      checksum (file, ptr, *idx, code | 0x1000);
      *idx = 16;
      i = *idx / 8;
    }

  if (size == 0)
    {
      /* Variable length string */
      size = strlen (string);
      ptr[i++] = size;
    }

  /* BUG WAITING TO HAPPEN */
  memcpy (ptr + i, string, size);
  i += size;
  *idx = i * 8;
}

#define SYSROFF_SWAP_OUT
#include "sysroff.c"


static char *rname_sh[] =
{
  "R0", "R1", "R2", "R3", "R4", "R5", "R6", "R7", "R8", "R9", "R10", "R11", "R12", "R13", "R14", "R15"
};

static char *rname_h8300[] =
{
  "ER0", "ER1", "ER2", "ER3", "ER4", "ER5", "ER6", "ER7", "PC", "CCR"
};

static void
wr_tr ()
{
  /* The TR block is not normal - it doesn't have any contents. */

  static char b[] = {
    0xff,			/* IT */
    0x03,			/* RL */
    0xfd,			/* CS */
  };
  fwrite (b, 1, sizeof (b), file);
}

static void
wr_un (ptr, sfile, first, nsecs)
     struct coff_ofile *ptr;
     struct coff_sfile *sfile;
     int first;
     int nsecs ATTRIBUTE_UNUSED;
{
  struct IT_un un;

  struct coff_symbol *s;

  un.spare1 = 0;

  if (bfd_get_file_flags (abfd) & EXEC_P)
    un.format = FORMAT_LM;
  else
    un.format = FORMAT_OM;
  un.spare1 = 0;


#if 1
  un.nsections = ptr->nsections - 1;	/*  Don't count the abs section */
#else
  /*NEW - only count sections with size */
  un.nsections = nsecs;
#endif

  un.nextdefs = 0;
  un.nextrefs = 0;
  /* Count all the undefined and defined variables with global scope */

  if (first)
    {
      for (s = ptr->symbol_list_head; s; s = s->next_in_ofile_list)
	{
	  if (s->visible->type == coff_vis_ext_def
	      || s->visible->type == coff_vis_common)
	    un.nextdefs++;

	  if (s->visible->type == coff_vis_ext_ref)
	    un.nextrefs++;
	}
    }
  un.tool = toolname;
  un.tcd = DATE;
  un.linker = "L_GX00";
  un.lcd = DATE;
  un.name = sfile->name;
  sysroff_swap_un_out (file, &un);
}


static void
wr_hd (p)
     struct coff_ofile *p;
{
  struct IT_hd hd;

  hd.spare1 = 0;
  if (bfd_get_file_flags (abfd) & EXEC_P)
    {
      hd.mt = MTYPE_ABS_LM;
    }
  else
    {
      hd.mt = MTYPE_OMS_OR_LMS;
    }
  hd.cd = DATE;

  hd.nu = p->nsources;		/* Always one unit */
  hd.code = 0;			/* Always ASCII */
  hd.ver = "0200";		/* Version 2.00 */
  switch (bfd_get_arch (abfd))
    {
    case bfd_arch_h8300:
      hd.au = 8;
      hd.si = 0;
      hd.spcsz = 32;
      hd.segsz = 0;
      hd.segsh = 0;
      switch (bfd_get_mach (abfd))
	{
	case bfd_mach_h8300:
	  hd.cpu = "H8300";
	  hd.afl = 2;
	  addrsize = 2;
	  toolname = "C_H8/300";
	  break;
	case bfd_mach_h8300h:
	  hd.cpu = "H8300H";
	  hd.afl = 4;
	  addrsize = 4;
	  toolname = "C_H8/300H";
	  break;
	case bfd_mach_h8300s:
	  hd.cpu = "H8300S";
	  hd.afl = 4;
	  addrsize = 4;
	  toolname = "C_H8/300S";
	  break;
	default:
	  abort();
	}
      rnames = rname_h8300;
      break;
    case bfd_arch_sh:
      hd.au = 8;
      hd.si = 0;
      hd.afl = 4;
      hd.spcsz = 32;
      hd.segsz = 0;
      hd.segsh = 0;
      hd.cpu = "SH";
      addrsize = 4;
      toolname = "C_SH";
      rnames = rname_sh;
      break;
    default:
      abort ();
    }

  if (! bfd_get_file_flags(abfd) & EXEC_P)
    {
      hd.ep = 0;
    }
  else
    {
      hd.ep = 1;
      hd.uan = 0;
      hd.sa = 0;
      hd.sad = 0;
      hd.address = bfd_get_start_address (abfd);
    }

  hd.os = "";
  hd.sys = "";
  hd.mn = strip_suffix (bfd_get_filename (abfd));

  sysroff_swap_hd_out (file, &hd);
}


static void
wr_sh (p, sec)
     struct coff_ofile *p ATTRIBUTE_UNUSED;
     struct coff_section *sec;
{
  struct IT_sh sh;
  sh.unit = 0;
  sh.section = sec->number;
#ifdef FOOP1
  sh.section = 0;
#endif
  sysroff_swap_sh_out (file, &sh);
}


static void
wr_ob (p, section)
     struct coff_ofile *p ATTRIBUTE_UNUSED;
     struct coff_section *section;
{
  bfd_size_type i;
  int first = 1;
  unsigned char stuff[200];

  i = 0;
  while (i < section->bfd_section->_raw_size)
    {
      struct IT_ob ob;
      int todo = 200;		/* Copy in 200 byte lumps */
      ob.spare = 0;
      if (i + todo > section->bfd_section->_raw_size)
	todo = section->bfd_section->_raw_size - i;

      if (first)
	{
	  ob.saf = 1;
	  if (bfd_get_file_flags (abfd) & EXEC_P)
	    ob.address = section->address;
	  else
	    ob.address = 0;

	  first = 0;
	}
      else
	{
	  ob.saf = 0;
	}

      ob.cpf = 0;		/* Never compress */
      ob.data.len = todo;
      bfd_get_section_contents (abfd, section->bfd_section, stuff, i, todo);
      ob.data.data = stuff;
      sysroff_swap_ob_out (file, &ob /*, i + todo < section->size */ );
      i += todo;
    }
  /* Now fill the rest with blanks */
  while (i < (bfd_size_type) section->size)
    {
      struct IT_ob ob;
      int todo = 200;		/* Copy in 200 byte lumps */
      ob.spare = 0;
      if (i + todo > (bfd_size_type) section->size)
	todo = section->size - i;
      ob.saf = 0;

      ob.cpf = 0;		/* Never compress */
      ob.data.len = todo;
      memset (stuff, 0, todo);
      ob.data.data = stuff;
      sysroff_swap_ob_out (file, &ob);
      i += todo;
    }
  /* Now fill the rest with blanks */

}

static void
wr_rl (ptr, sec)
     struct coff_ofile *ptr ATTRIBUTE_UNUSED;
     struct coff_section *sec;
{
  int nr = sec->nrelocs;
  int i;
  for (i = 0; i < nr; i++)
    {
      struct coff_reloc *r = sec->relocs + i;
      struct coff_symbol *ref;
      struct IT_rl rl;
      rl.apol = 0;
      rl.boundary = 0;
      rl.segment = 1;
      rl.sign = 0;
      rl.check = 0;
      rl.addr = r->offset;
      rl.bitloc = 0;
      rl.flen = 32;		/* SH Specific */
      /* What sort of reloc ? Look in the section to find out */
      ref = r->symbol;
      if (ref->visible->type == coff_vis_ext_ref)
	{
	  rl.bcount = 4;	/* Always 4 for us */
	  rl.op = OP_EXT_REF;
	  rl.symn = ref->er_number;
	}
      else if (ref->visible->type == coff_vis_common)
	{
	  rl.bcount = 11;	/* Always 11 for us */
	  rl.op = OP_SEC_REF;
	  rl.secn = ref->where->section->number;
	  rl.copcode_is_3 = 3;
	  rl.alength_is_4 = 4;
	  rl.addend = ref->where->offset - ref->where->section->address;
	  rl.aopcode_is_0x20 = 0x20;
	}

      else
	{
	  rl.bcount = 11;	/* Always 11 for us */
	  rl.op = OP_SEC_REF;
	  rl.secn = ref->where->section->number;
	  rl.copcode_is_3 = 3;
	  rl.alength_is_4 = 4;
	  rl.addend = -ref->where->section->address;
	  rl.aopcode_is_0x20 = 0x20;
	}
      rl.end = 0xff;
      if (rl.op == OP_SEC_REF
	  || rl.op == OP_EXT_REF)
	{
	  sysroff_swap_rl_out (file, &rl);
	}
    }
}

static void
wr_object_body (p)
     struct coff_ofile *p;
{
  int i;
  for (i = 1; i < p->nsections; i++)
    {
      wr_sh (p, p->sections + i);
      wr_ob (p, p->sections + i);
      wr_rl (p, p->sections + i);
    }
}

static void
wr_dps_start (sfile, section, scope, type, nest)
     struct coff_sfile *sfile;
     struct coff_section *section ATTRIBUTE_UNUSED;
     struct coff_scope *scope;
     int type;
     int nest;
{
  struct IT_dps dps;
  dps.end = 0;
  dps.opt = 0;
  dps.type = type;
  if (scope->sec)
    {
      dps.san = scope->sec->number;
      dps.address = scope->offset - find_base (sfile, scope->sec);
      dps.block_size = scope->size;
      if (debug)
	{
	  printf ("DPS %s %d %x\n",
		  sfile->name,
		  nest,
		  dps.address);

	}
    }
  else
    {
      dps.san = 0;
      dps.address = 0;
      dps.block_size = 0;
    }

  dps.nesting = nest;
  dps.neg = 0x1001;
  sysroff_swap_dps_out (file, &dps);
}

static void
wr_dps_end (section, scope, type)
     struct coff_section *section ATTRIBUTE_UNUSED;
     struct coff_scope *scope ATTRIBUTE_UNUSED;
     int type;
{
  struct IT_dps dps;
  dps.end = 1;
  dps.type = type;
  sysroff_swap_dps_out (file, &dps);
}

static int *
nints (x)
     int x;
{
  return (int *) (xcalloc (sizeof (int), x));
}

static void walk_tree_symbol ();
static void
walk_tree_type_1 (sfile, symbol, type, nest)
     struct coff_sfile *sfile;
     struct coff_symbol *symbol;
     struct coff_type *type;
     int nest;
{
  switch (type->type)
    {
    case coff_secdef_type:
    case coff_basic_type:
      {
	struct IT_dbt dbt;

	switch (type->u.basic)
	  {
	  case T_NULL:
	  case T_VOID:
	    dbt.btype = BTYPE_VOID;
	    dbt.sign = BTYPE_UNSPEC;
	    dbt.fptype = FPTYPE_NOTSPEC;
	    break;
	  case T_CHAR:
	    dbt.btype = BTYPE_CHAR;
	    dbt.sign = BTYPE_UNSPEC;
	    dbt.fptype = FPTYPE_NOTSPEC;
	    break;
	  case T_SHORT:
	  case T_INT:
	  case T_LONG:
	    dbt.btype = BTYPE_INT;
	    dbt.sign = SIGN_SIGNED;
	    dbt.fptype = FPTYPE_NOTSPEC;
	    break;
	  case T_FLOAT:
	    dbt.btype = BTYPE_FLOAT;
	    dbt.fptype = FPTYPE_SINGLE;
	    break;
	  case T_DOUBLE:
	    dbt.btype = BTYPE_FLOAT;
	    dbt.fptype = FPTYPE_DOUBLE;
	    break;
	  case T_LNGDBL:
	    dbt.btype = BTYPE_FLOAT;
	    dbt.fptype = FPTYPE_EXTENDED;
	    break;
	  case T_UCHAR:
	    dbt.btype = BTYPE_CHAR;
	    dbt.sign = SIGN_UNSIGNED;
	    dbt.fptype = FPTYPE_NOTSPEC;
	    break;
	  case T_USHORT:
	  case T_UINT:
	  case T_ULONG:
	    dbt.btype = BTYPE_INT;
	    dbt.sign = SIGN_UNSIGNED;
	    dbt.fptype = FPTYPE_NOTSPEC;
	    break;
	  }
	dbt.bitsize = type->size;
	dbt.neg = 0x1001;
	sysroff_swap_dbt_out (file, &dbt);
	break;
      }
    case coff_pointer_type:
      {
	struct IT_dpt dpt;
	walk_tree_type_1 (sfile, symbol, type->u.pointer.points_to, nest + 1);
	dpt.neg = 0x1001;
	sysroff_swap_dpt_out (file, &dpt);
	break;
      }

    case coff_function_type:
      {
	struct IT_dfp dfp;
	struct coff_symbol *param;
	dfp.end = 0;
	dfp.spare = 0;
	dfp.nparams = type->u.function.parameters->nvars;
	dfp.neg = 0x1001;

	walk_tree_type_1 (sfile, symbol, type->u.function.function_returns, nest + 1);

	sysroff_swap_dfp_out (file, &dfp);

	for (param = type->u.function.parameters->vars_head;
	     param;
	     param = param->next)
	  {
	    walk_tree_symbol (sfile, 0, param, nest);
	  }
	dfp.end = 1;
	sysroff_swap_dfp_out (file, &dfp);
	break;
      }

    case coff_structdef_type:
      {
	struct IT_dbt dbt;
	struct IT_dds dds;
	struct coff_symbol *member;
	dds.spare = 0;
	dbt.btype = BTYPE_STRUCT;
	dbt.bitsize = type->size;
	dbt.sign = SIGN_UNSPEC;
	dbt.fptype = FPTYPE_NOTSPEC;
	dbt.sid = get_member_id (type->u.astructdef.idx);
	dbt.neg = 0x1001;
	sysroff_swap_dbt_out (file, &dbt);
	dds.end = 0;
	dds.neg = 0x1001;
	sysroff_swap_dds_out (file, &dds);
	for (member = type->u.astructdef.elements->vars_head;
	     member;
	     member = member->next)
	  {
	    walk_tree_symbol (sfile, 0, member, nest + 1);
	  }

	dds.end = 1;
	sysroff_swap_dds_out (file, &dds);

      }
      break;
    case coff_structref_type:
      {
	struct IT_dbt dbt;
	dbt.btype = BTYPE_TAG;
	dbt.bitsize = type->size;
	dbt.sign = SIGN_UNSPEC;
	dbt.fptype = FPTYPE_NOTSPEC;
	if (type->u.astructref.ref)
	  {
	    dbt.sid = get_member_id (type->u.astructref.ref->number);
	  }
	else
	  {
	    dbt.sid = 0;
	  }

	dbt.neg = 0x1001;
	sysroff_swap_dbt_out (file, &dbt);
      }
      break;
    case coff_array_type:
      {
	struct IT_dar dar;
	int j;
	int dims = 1;		/* Only output one dimension at a time */
	dar.dims = dims;
	dar.variable = nints (dims);
	dar.subtype = nints (dims);
	dar.spare = nints (dims);
	dar.max_variable = nints (dims);
	dar.maxspare = nints (dims);
	dar.max = nints (dims);
	dar.min_variable = nints (dims);
	dar.min = nints (dims);
	dar.minspare = nints (dims);
	dar.neg = 0x1001;
	dar.length = type->size / type->u.array.dim;
	for (j = 0; j < dims; j++)
	  {
	    dar.variable[j] = VARIABLE_FIXED;
	    dar.subtype[j] = SUB_INTEGER;
	    dar.spare[j] = 0;
	    dar.max_variable[j] = 0;
	    dar.max[j] = type->u.array.dim;
	    dar.min_variable[j] = 0;
	    dar.min[j] = 1;	/* Why isn't this 0 ? */
	  }
	walk_tree_type_1 (sfile, symbol, type->u.array.array_of, nest + 1);
	sysroff_swap_dar_out (file, &dar);
      }
      break;
    case coff_enumdef_type:
      {
	struct IT_dbt dbt;
	struct IT_den den;
	struct coff_symbol *member;
	dbt.btype = BTYPE_ENUM;
	dbt.bitsize = type->size;
	dbt.sign = SIGN_UNSPEC;
	dbt.fptype = FPTYPE_NOTSPEC;
	dbt.sid = get_member_id (type->u.aenumdef.idx);
	dbt.neg = 0x1001;
	sysroff_swap_dbt_out (file, &dbt);

	den.end = 0;
	den.neg = 0x1001;
	den.spare = 0;
	sysroff_swap_den_out (file, &den);
	for (member = type->u.aenumdef.elements->vars_head;
	     member;
	     member = member->next)
	  {
	    walk_tree_symbol (sfile, 0, member, nest + 1);
	  }

	den.end = 1;
	sysroff_swap_den_out (file, &den);
      }
      break;

      break;
    case coff_enumref_type:
      {
	struct IT_dbt dbt;
	dbt.btype = BTYPE_TAG;
	dbt.bitsize = type->size;
	dbt.sign = SIGN_UNSPEC;
	dbt.fptype = FPTYPE_NOTSPEC;
	dbt.sid = get_member_id (type->u.aenumref.ref->number);
	dbt.neg = 0x1001;
	sysroff_swap_dbt_out (file, &dbt);
      }
      break;
    default:
      abort ();
    }
}

/* Obsolete ? 
   static void
   dty_start ()
   {
   struct IT_dty dty;
   dty.end = 0;
   dty.neg = 0x1001;
   dty.spare = 0;
   sysroff_swap_dty_out (file, &dty);
   }

   static void
   dty_stop ()
   {
   struct IT_dty dty;
   dty.end = 0;
   dty.neg = 0x1001;
   dty.end = 1;
   sysroff_swap_dty_out (file, &dty);
   }


   static void
   dump_tree_structure (sfile, symbol, type, nest)
   struct coff_sfile *sfile;
   struct coff_symbol *symbol;
   struct coff_type *type;
   int nest;
   {
   if (symbol->type->type == coff_function_type)
   {


   }

   }
 */

static void
walk_tree_type (sfile, symbol, type, nest)

     struct
     coff_sfile *sfile;
     struct coff_symbol *symbol;
     struct coff_type *type;
     int nest;
{
  if (symbol->type->type == coff_function_type)
    {

      struct IT_dty dty;
      dty.end = 0;
      dty.neg = 0x1001;

      sysroff_swap_dty_out (file, &dty);
      walk_tree_type_1 (sfile, symbol, type, nest);
      dty.end = 1;
      sysroff_swap_dty_out (file, &dty);

      wr_dps_start (sfile,
		    symbol->where->section,
		    symbol->type->u.function.code,
		    BLOCK_TYPE_FUNCTION, nest);
      wr_dps_start (sfile, symbol->where->section,
		    symbol->type->u.function.code,
		    BLOCK_TYPE_BLOCK, nest);
      walk_tree_scope (symbol->where->section,
		       sfile,
		       symbol->type->u.function.code,
		       nest + 1, BLOCK_TYPE_BLOCK);

      wr_dps_end (symbol->where->section,
		  symbol->type->u.function.code,
		  BLOCK_TYPE_BLOCK);
      wr_dps_end (symbol->where->section,
		  symbol->type->u.function.code, BLOCK_TYPE_FUNCTION);

    }
  else
    {
      struct IT_dty dty;
      dty.end = 0;
      dty.neg = 0x1001;
      sysroff_swap_dty_out (file, &dty);
      walk_tree_type_1 (sfile, symbol, type, nest);
      dty.end = 1;
      sysroff_swap_dty_out (file, &dty);
    }

}


static void
walk_tree_symbol (sfile, section, symbol, nest)
     struct coff_sfile *sfile;
     struct coff_section *section ATTRIBUTE_UNUSED;
     struct coff_symbol *symbol;
     int nest;
{
  struct IT_dsy dsy;

  memset(&dsy, 0, sizeof(dsy));
  dsy.nesting = nest;

  switch (symbol->type->type)
    {
    case coff_function_type:
      dsy.type = STYPE_FUNC;
      dsy.assign = 1;
      break;
    case coff_structref_type:
    case coff_pointer_type:
    case coff_array_type:
    case coff_basic_type:
    case coff_enumref_type:
      dsy.type = STYPE_VAR;
      dsy.assign = 1;
      break;
    case coff_enumdef_type:
      dsy.type = STYPE_TAG;
      dsy.assign = 0;
      dsy.magic = 2;
      break;
    case coff_structdef_type:
      dsy.type = STYPE_TAG;
      dsy.assign = 0;
      dsy.magic = symbol->type->u.astructdef.isstruct ? 0 : 1;
      break;
    case coff_secdef_type:
      return;
    default:
      abort ();
    }

  if (symbol->where->where == coff_where_member_of_struct)
    {
      dsy.assign = 0;
      dsy.type = STYPE_MEMBER;
    }
  if (symbol->where->where == coff_where_member_of_enum)
    {
      dsy.type = STYPE_ENUM;
      dsy.assign = 0;
      dsy.evallen = 4;
      dsy.evalue = symbol->where->offset;
    }

  if (symbol->type->type == coff_structdef_type
      || symbol->where->where == coff_where_entag
      || symbol->where->where == coff_where_strtag)
    {
      dsy.snumber = get_member_id (symbol->number);
    }
  else
    {
      dsy.snumber = get_ordinary_id (symbol->number);
    }


  dsy.sname = symbol->name[0] == '_' ? symbol->name + 1 : symbol->name;

  switch (symbol->visible->type)
    {
    case coff_vis_common:
    case coff_vis_ext_def:
      dsy.ainfo = AINFO_STATIC_EXT_DEF;
      break;
    case coff_vis_ext_ref:
      dsy.ainfo = AINFO_STATIC_EXT_REF;
      break;
    case coff_vis_int_def:
      dsy.ainfo = AINFO_STATIC_INT;
      break;
    case coff_vis_auto:
    case coff_vis_autoparam:
      dsy.ainfo = AINFO_AUTO;
      break;
    case coff_vis_register:
    case coff_vis_regparam:
      dsy.ainfo = AINFO_REG;
      break;
      break;
    case coff_vis_tag:
    case coff_vis_member_of_struct:
    case coff_vis_member_of_enum:
      break;
    default:
      abort ();
    }

  dsy.dlength = symbol->type->size;
  switch (symbol->where->where)
    {
    case coff_where_memory:

      dsy.section = symbol->where->section->number;
#ifdef FOOP
      dsy.section = 0;
#endif
      break;
    case coff_where_member_of_struct:
    case coff_where_member_of_enum:
    case coff_where_stack:
    case coff_where_register:
    case coff_where_unknown:
    case coff_where_strtag:

    case coff_where_entag:
    case coff_where_typedef:
      break;
    default:
      abort ();
    }

  switch (symbol->where->where)
    {
    case coff_where_memory:
      dsy.address = symbol->where->offset - find_base (sfile, symbol->where->section);
      break;
    case coff_where_stack:
      dsy.address = symbol->where->offset;
      break;
    case coff_where_member_of_struct:


      if (symbol->where->bitsize)
	{
	  int bits = (symbol->where->offset * 8 + symbol->where->bitoffset);
	  dsy.bitunit = 1;
	  dsy.field_len = symbol->where->bitsize;
	  dsy.field_off = (bits / 32) * 4;
	  dsy.field_bitoff = bits % 32;
	}
      else
	{
	  dsy.bitunit = 0;

	  dsy.field_len = symbol->type->size;
	  dsy.field_off = symbol->where->offset;
	}
      break;
    case coff_where_member_of_enum:
      /*      dsy.bitunit = 0;
         dsy.field_len  = symbol->type->size;
         dsy.field_off = symbol->where->offset; */
      break;
    case coff_where_register:
    case coff_where_unknown:
    case coff_where_strtag:

    case coff_where_entag:
    case coff_where_typedef:
      break;
    default:
      abort ();
    }

  if (symbol->where->where == coff_where_register)
    dsy.reg = rnames[symbol->where->offset];

  switch (symbol->visible->type)
    {
    case coff_vis_common:
      /* We do this 'cause common C symbols are treated as extdefs */
    case coff_vis_ext_def:
    case coff_vis_ext_ref:

      dsy.ename = symbol->name;
      break;

    case coff_vis_regparam:
    case coff_vis_autoparam:
      dsy.type = STYPE_PARAMETER;
      break;

    case coff_vis_int_def:

    case coff_vis_auto:
    case coff_vis_register:
    case coff_vis_tag:
    case coff_vis_member_of_struct:
    case coff_vis_member_of_enum:
      break;
    default:
      abort ();
    }

  dsy.sfn = 0;
  dsy.sln = 2;

  dsy.neg = 0x1001;


  sysroff_swap_dsy_out (file, &dsy);

  walk_tree_type (sfile, symbol, symbol->type, nest);
}


static void
walk_tree_scope (section, sfile, scope, nest, type)
     struct coff_section *section;
     struct coff_sfile *sfile;
     struct coff_scope *scope;
     int nest;
     int type;
{
  struct coff_symbol *vars;
  struct coff_scope *child;

  if (scope->vars_head
      || (scope->list_head && scope->list_head->vars_head))
    {
      wr_dps_start (sfile, section, scope, type, nest);

      if (nest == 0)
	wr_globals (tree, sfile, nest + 1);

      for (vars = scope->vars_head; vars; vars = vars->next)
	{
	  walk_tree_symbol (sfile, section, vars, nest);
	}

      for (child = scope->list_head; child; child = child->next)
	{
	  walk_tree_scope (section, sfile, child, nest + 1, BLOCK_TYPE_BLOCK);
	}

      wr_dps_end (section, scope, type);
    }
}
static void
walk_tree_sfile (section, sfile)
     struct coff_section *section;
     struct coff_sfile *sfile;
{
  walk_tree_scope (section, sfile, sfile->scope, 0, BLOCK_TYPE_COMPUNIT);

}

static void
wr_program_structure (p, sfile)
     struct coff_ofile *p;
     struct coff_sfile *sfile;
{

  walk_tree_sfile (p->sections + 4, sfile);

}

static void
wr_du (p, sfile, n)
     struct coff_ofile *p;
     struct coff_sfile *sfile;
     int n;
{
  struct IT_du du;
  int lim;
#if 0
  struct coff_symbol *symbol;
  static int incit = 0x500000;
  int used = 0;
#endif
  int i;
  int j;
  unsigned int *lowest = (unsigned *) nints (p->nsections);
  unsigned int *highest = (unsigned *) nints (p->nsections);
  du.format = bfd_get_file_flags (abfd) & EXEC_P ? 0 : 1;
  du.optimized = 0;
  du.stackfrmt = 0;
  du.spare = 0;
  du.unit = n;
  du.sections = p->nsections - 1;
  du.san = (int *) xcalloc (sizeof (int), du.sections);
  du.address = nints (du.sections);
  du.length = nints (du.sections);

  for (i = 0; i < du.sections; i++)
    {
      lowest[i] = ~0;
      highest[i] = 0;
    }

  /* Look through all the symbols and try and work out the extents in this
     source file */
#if 0
  for (symbol = sfile->scope->vars_head;
       symbol;
       symbol = symbol->next)
    {
      if (symbol->type->type == coff_secdef_type)
	{
	  unsigned int low = symbol->where->offset;
	  unsigned int high = symbol->where->offset + symbol->type->size - 1;
	  struct coff_section *section = symbol->where->section;

	  int sn = section->number;
	  if (low < lowest[sn])
	    lowest[sn] = low;
	  if (high > highest[sn])
	    highest[sn] = high;
	}
    }


  for (i = 0; i < du.sections; i++)
    {
      if (highest[i] == 0)
	{
	  lowest[i] = highest[i] = incit;
	}
      du.san[used] = i;
      du.length[used] = highest[i] - lowest[i];
      du.address[used] = bfd_get_file_flags (abfd) & EXEC_P ? lowest[i] : 0;
      if (debug)
	{
	  printf (" section %6s 0x%08x..0x%08x\n",
		  p->sections[i + 1].name,
		  lowest[i],
		  highest[i]);
	}
      used++;
    }

#endif
  lim = du.sections;
  for (j = 0; j < lim; j++)
    {
      int src = j;
      int dst = j;
      du.san[dst] = dst;
      if (sfile->section[src].init)
	{
	  du.length[dst]
	    = sfile->section[src].high - sfile->section[src].low + 1;
	  du.address[dst]
	    = sfile->section[src].low;
	}
      else
	{
	  du.length[dst] = 0;
	  du.address[dst] = 0;
	}
      if (debug)
	{
	  if (sfile->section[src].parent)
	    {
	      printf (" section %6s 0x%08x..0x%08x\n",
		      sfile->section[src].parent->name,
		      du.address[dst],
		      du.address[dst] + du.length[dst] - 1);
	    }
	}
      du.sections = dst + 1;
    }

  du.tool = "c_gcc";
  du.date = DATE;

  sysroff_swap_du_out (file, &du);
}

static void
wr_dus (p, sfile)
     struct coff_ofile *p ATTRIBUTE_UNUSED;
     struct coff_sfile *sfile;
{

  struct IT_dus dus;

  dus.efn = 0x1001;
  dus.ns = 1;			/* p->nsources; sac 14 jul 94 */
  dus.drb = nints (dus.ns);
  dus.fname = (char **) xcalloc (sizeof (char *), dus.ns);
  dus.spare = nints (dus.ns);
  dus.ndir = 0;
  /* Find the filenames */
#if 0
  i = 0;

  for (sfile = p->source_head;
       sfile;
       sfile = sfile->next)
    {
      dus.drb[i] = 0;
      dus.spare[i] = 0;
      dus.fname[i] = sfile->name;
      i++;
    }
#else
  dus.drb[0] = 0;
  dus.fname[0] = sfile->name;
#endif

  sysroff_swap_dus_out (file, &dus);

}

/* Find the offset of the .text section for this sfile in the
   .text section for the output file */

static int
find_base (sfile, section)
     struct coff_sfile *sfile;
     struct coff_section *section;
{
  return sfile->section[section->number].low;
}

static void
wr_dln (p, sfile, n)
     struct coff_ofile *p ATTRIBUTE_UNUSED;
     struct coff_sfile *sfile;
     int n ATTRIBUTE_UNUSED;

{
#if 0
  if (n == 0)
    {
      /* Count up all the linenumbers */
      struct coff_symbol *sy;
      int lc = 0;
      struct IT_dln dln;

      int idx;

      for (sy = p->symbol_list_head;
	   sy;
	   sy = sy->next_in_ofile_list)
	{
	  struct coff_type *t = sy->type;
	  if (t->type == coff_function_type)
	    {
	      struct coff_line *l = t->u.function.lines;
	      lc += l->nlines;
	    }
	}

      dln.sfn = nints (lc);
      dln.sln = nints (lc);
      dln.lln = nints (lc);
      dln.section = nints (lc);

      dln.from_address = nints (lc);
      dln.to_address = nints (lc);


      dln.neg = 0x1001;

      dln.nln = lc;

      /* Run through once more and fill up the structure */
      idx = 0;
      for (sy = p->symbol_list_head;
	   sy;
	   sy = sy->next_in_ofile_list)
	{
	  if (sy->type->type == coff_function_type)
	    {
	      int i;
	      struct coff_line *l = sy->type->u.function.lines;
	      for (i = 0; i < l->nlines; i++)
		{
		  dln.section[idx] = sy->where->section->number;
		  dln.sfn[idx] = n;
		  dln.sln[idx] = l->lines[i];
		  dln.from_address[idx] = l->addresses[i];
		  if (idx)
		    dln.to_address[idx - 1] = dln.from_address[idx];
		  idx++;
		}
	    }
	  n++;
	}
      sysroff_swap_dln_out (file, &dln);
    }

#endif
#if 1
  /* Count up all the linenumbers */

  struct coff_symbol *sy;
  int lc = 0;
  struct IT_dln dln;

  int idx;

  for (sy = sfile->scope->vars_head;
       sy;
       sy = sy->next)
    {
      struct coff_type *t = sy->type;
      if (t->type == coff_function_type)
	{
	  struct coff_line *l = t->u.function.lines;
	  if (l)
	    lc += l->nlines;
	}
    }

  dln.sfn = nints (lc);
  dln.sln = nints (lc);
  dln.cc = nints (lc);
  dln.section = nints (lc);

  dln.from_address = nints (lc);
  dln.to_address = nints (lc);


  dln.neg = 0x1001;

  dln.nln = lc;

  /* Run through once more and fill up the structure */
  idx = 0;
  for (sy = sfile->scope->vars_head;
       sy;
       sy = sy->next)
    {
      if (sy->type->type == coff_function_type)
	{
	  int i;
	  struct coff_line *l = sy->type->u.function.lines;
	  if (l)
	    {
	      int base = find_base (sfile, sy->where->section);
	      for (i = 0; i < l->nlines; i++)
		{
		  dln.section[idx] = sy->where->section->number;
		  dln.sfn[idx] = 0;
		  dln.sln[idx] = l->lines[i];
		  dln.from_address[idx] =
		    l->addresses[i] + sy->where->section->address - base;
		  dln.cc[idx] = 0;
		  if (idx)
		    dln.to_address[idx - 1] = dln.from_address[idx];
		  idx++;

		}
	      dln.to_address[idx - 1] = dln.from_address[idx - 1] + 2;
	    }
	}
    }
  if (lc)
    sysroff_swap_dln_out (file, &dln);
#endif
}

/* Write the global symbols out to the debug info */
static void
wr_globals (p, sfile, n)
     struct coff_ofile *p;
     struct coff_sfile *sfile;
     int n ATTRIBUTE_UNUSED;
{
  struct coff_symbol *sy;
  for (sy = p->symbol_list_head;
       sy;
       sy = sy->next_in_ofile_list)
    {
      if (sy->visible->type == coff_vis_ext_def
	  || sy->visible->type == coff_vis_ext_ref)
	{
	  /* Only write out symbols if they belong to
	     the current source file */
	  if (sy->sfile == sfile)
	    walk_tree_symbol (sfile, 0, sy, 0);

	}
    }
}

static void
wr_debug (p)
     struct coff_ofile *p;
{
  struct coff_sfile *sfile;
  int n = 0;
  for (sfile = p->source_head;
       sfile;
       sfile = sfile->next)

    {
      if (debug)
	{
	  printf ("%s\n", sfile->name);
	}
      wr_du (p, sfile, n);
      wr_dus (p, sfile);
      wr_program_structure (p, sfile);
      wr_dln (p, sfile, n);
      n++;
    }
}

static void
wr_cs ()
{
  /* It seems that the CS struct is not normal - the size is wrong
     heres one I prepared earlier.. */
  static char b[] = {
    0x80,			/* IT */
    0x21,			/* RL */
    0x00,			/* number of chars in variable length part */
    0x80,			/* hd */ 
    0x00,			/* hs */ 
    0x80,			/* un */ 
    0x00,			/* us */ 
    0x80,			/* sc */ 
    0x00,			/* ss */ 
    0x80,			/* er */ 
    0x80,			/* ed */ 
    0x80,			/* sh */ 
    0x80,			/* ob */ 
    0x80,			/* rl */ 
    0x80,			/* du */
    0x80,			/* dps */
    0x80,			/* dsy */
    0x80,			/* dty */
    0x80,			/* dln */
    0x80,			/* dso */
    0x80,			/* dus */
    0x00,			/* dss */
    0x80,			/* dbt */
    0x00,			/* dpp */
    0x80,			/* dfp */
    0x80,			/* den */
    0x80,			/* dds */
    0x80,			/* dar */
    0x80,			/* dpt */
    0x00,			/* dul */
    0x00,			/* dse */
    0x00,			/* dot */
    0xDE			/* CS */
  };
  fwrite (b, 1, sizeof (b), file);
}

/* Write out the SC records for a unit.  Create an SC
   for all the sections which appear in the output file, even
   if there isn't an equivalent one on the input */

static int
wr_sc (ptr, sfile)
     struct coff_ofile *ptr;
     struct coff_sfile *sfile;
{
  int i;
int scount = 0;
  /* First work out the total number of sections */

  int total_sec = ptr->nsections;

  struct myinfo
    {
      struct coff_section *sec;
      struct coff_symbol *symbol;
    };
  struct coff_symbol *symbol;

  struct myinfo *info
    = (struct myinfo *) calloc (total_sec, sizeof (struct myinfo));


  for (i = 0; i < total_sec; i++)
    {
      info[i].sec = ptr->sections + i;
      info[i].symbol = 0;
    }

  for (symbol = sfile->scope->vars_head;
       symbol;
       symbol = symbol->next)
    {

      if (symbol->type->type == coff_secdef_type)
	{
	  for (i = 0; i < total_sec; i++)
	    {
	      if (symbol->where->section == info[i].sec)
		{
		  info[i].symbol = symbol;
		  break;
		}
	    }
	}
    }

  /* Now output all the section info, and fake up some stuff for sections
     we don't have */

  for (i = 1; i < total_sec; i++)
    {
      struct IT_sc sc;
      char *name;
      symbol = info[i].symbol;
      sc.spare = 0;
      sc.spare1 = 0;
      if (!symbol)
	{
	  /* Don't have a symbol set aside for this section, which means that nothing
	     in this file does anything for the section. */
	  sc.format = !(bfd_get_file_flags (abfd) & EXEC_P);
	  sc.addr = 0;
	  sc.length = 0;
	  name = info[i].sec->name;
	}
      else
	{
	  if (bfd_get_file_flags (abfd) & EXEC_P)
	    {
	      sc.format = 0;
	      sc.addr = symbol->where->offset;
	    }
	  else
	    {
	      sc.format = 1;
	      sc.addr = 0;
	    }
	  sc.length = symbol->type->size;
	  name = symbol->name;
	}

      sc.align = 4;

      sc.concat = CONCAT_SIMPLE;
      sc.read = 3;
      sc.write = 3;
      sc.exec = 3;
      sc.init = 3;
      sc.mode = 3;
      sc.spare = 0;
      sc.segadd = 0;
      sc.spare1 = 0;		/* If not zero, then it doesn't work */
      sc.name = section_translate (name);
      if (strlen (sc.name) == 1)
	{
	  switch (sc.name[0])
	    {
	    case 'D':
	    case 'B':
	      sc.contents = CONTENTS_DATA;
	      break;
	    default:
	      sc.contents = CONTENTS_CODE;
	    }
	}
      else
	{
	  sc.contents = CONTENTS_CODE;
	}
#if 0
      /* NEW */
      if (sc.length) {
#endif
	sysroff_swap_sc_out (file, &sc);
	scount++;
#if 0
      }
#endif
    }
return scount;
}


/* Write out the ER records for a unit. */
static void
wr_er (ptr, sfile, first)
     struct coff_ofile *ptr;
     struct coff_sfile *sfile ATTRIBUTE_UNUSED;
     int first;
{
  int idx = 0;
  struct coff_symbol *sym;
  if (first)
    {
      for (sym = ptr->symbol_list_head; sym; sym = sym->next_in_ofile_list)
	{
	  if (sym->visible->type == coff_vis_ext_ref)
	    {
	      struct IT_er er;
	      er.spare = 0;
	      er.type = ER_NOTSPEC;
	      er.name = sym->name;
	      sysroff_swap_er_out (file, &er);
	      sym->er_number = idx++;
	    }
	}
    }
}

/* Write out the ED records for a unit. */
static void
wr_ed (ptr, sfile, first)
     struct coff_ofile *ptr;
     struct coff_sfile *sfile ATTRIBUTE_UNUSED;
     int first;
{
  struct coff_symbol *s;
  if (first)
    {
      for (s = ptr->symbol_list_head; s; s = s->next_in_ofile_list)
	{
	  if (s->visible->type == coff_vis_ext_def
	      || s->visible->type == coff_vis_common)
	    {
	      struct IT_ed ed;

	      ed.section = s->where->section->number;
	      ed.spare = 0;
	      if (s->where->section->data)
		{
		  ed.type = ED_TYPE_DATA;
		}
	      else if (s->where->section->code & SEC_CODE)
		{
		  ed.type = ED_TYPE_ENTRY;
		}
	      else
		{
		  ed.type = ED_TYPE_NOTSPEC;
		  ed.type = ED_TYPE_DATA;
		}
	      ed.address = s->where->offset - s->where->section->address;
	      ed.name = s->name;
	      sysroff_swap_ed_out (file, &ed);
	    }
	}
    }
}

static void
wr_unit_info (ptr)
     struct coff_ofile *ptr;
{
  struct coff_sfile *sfile;
  int first = 1;
  for (sfile = ptr->source_head;
       sfile;
       sfile = sfile->next)
    {
      long p1;
      long p2;
      int nsecs;
      p1 = ftell (file);
      wr_un (ptr, sfile, first, 0);
      nsecs = wr_sc (ptr, sfile);
      p2 = ftell (file);
      fseek (file, p1, SEEK_SET);
      wr_un (ptr, sfile, first, nsecs);
      fseek (file, p2, SEEK_SET); 
      wr_er (ptr, sfile, first);
      wr_ed (ptr, sfile, first);
      first = 0;
    }
}

static void
wr_module (p)
     struct coff_ofile *p;
{
  wr_cs ();
  wr_hd (p);
  wr_unit_info (p);
  wr_object_body (p);
  wr_debug (p);
  wr_tr ();
}

static int
align (x)
     int x;
{
  return (x + 3) & ~3;
}

/* Find all the common variables and turn them into
   ordinary defs - dunno why, but thats what hitachi does with 'em */

static void
prescan (tree)
     struct coff_ofile *tree;
{
  struct coff_symbol *s;
  struct coff_section *common_section;
  /* Find the common section - always section 3 */
  common_section = tree->sections + 3;
  for (s = tree->symbol_list_head;
       s;
       s = s->next_in_ofile_list)
    {
      if (s->visible->type == coff_vis_common)
	{
	  struct coff_where *w = s->where;
	  /*      s->visible->type = coff_vis_ext_def; leave it as common */
	  common_section->size = align (common_section->size);
	  w->offset = common_section->size + common_section->address;
	  w->section = common_section;
	  common_section->size += s->type->size;
	  common_section->size = align (common_section->size);
	}
    }
}

char *program_name;

static void
show_usage (file, status)
     FILE *file;
     int status;
{
  fprintf (file, _("Usage: %s [-dhVq] in-file [out-file]\n"), program_name);
  exit (status);
}

static void
show_help ()
{
  printf (_("%s: Convert a COFF object file into a SYSROFF object file\n"),
	  program_name);
  show_usage (stdout, 0);
}


int
main (ac, av)
     int ac;
     char *av[];
{
  int opt;
  static struct option long_options[] =
  {
    {"debug", no_argument, 0, 'd'},
    {"quick", no_argument, 0, 'q'},
    {"noprescan", no_argument, 0, 'n'},
    {"help", no_argument, 0, 'h'},
    {"version", no_argument, 0, 'V'},
    {NULL, no_argument, 0, 0}
  };
  char **matching;
  char *input_file;
  char *output_file;

#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
  setlocale (LC_MESSAGES, "");
#endif
  bindtextdomain (PACKAGE, LOCALEDIR);
  textdomain (PACKAGE);

  program_name = av[0];
  xmalloc_set_program_name (program_name);

  while ((opt = getopt_long (ac, av, "dhVqn", long_options,
			     (int *) NULL))
	 != EOF)
    {
      switch (opt)
	{
	case 'q':
	  quick = 1;
	  break;
	case 'n':
	  noprescan = 1;
	  break;
	case 'd':
	  debug = 1;
	  break;
	case 'h':
	  show_help ();
	  /*NOTREACHED */
	case 'V':
	  printf (_("GNU %s version %s\n"), program_name, PROGRAM_VERSION);
	  exit (0);
	  /*NOTREACHED */
	case 0:
	  break;
	default:
	  show_usage (stderr, 1);
	  /*NOTREACHED */
	}
    }

  /* The input and output files may be named on the command line.  */
  output_file = NULL;
  if (optind < ac)
    {
      input_file = av[optind];
      ++optind;
      if (optind < ac)
	{
	  output_file = av[optind];
	  ++optind;
	  if (optind < ac)
	    show_usage (stderr, 1);
	  if (strcmp (input_file, output_file) == 0)
	    {
	      fatal (_("input and output files must be different"));
	    }
	}
    }
  else
    input_file = 0;

  if (!input_file)
    {
      fatal (_("no input file specified"));
    }

  if (!output_file)
    {
      /* Take a .o off the input file and stick on a .obj.  If
         it doesn't end in .o, then stick a .obj on anyway */

      int len = strlen (input_file);
      output_file = xmalloc (len + 5);
      strcpy (output_file, input_file);
      if (len > 3
	  && output_file[len - 2] == '.'
	  && output_file[len - 1] == 'o')
	{
	  output_file[len] = 'b';
	  output_file[len + 1] = 'j';
	  output_file[len + 2] = 0;
	}
      else
	{
	  strcat (output_file, ".obj");
	}
    }

  abfd = bfd_openr (input_file, 0);

  if (!abfd)
    bfd_fatal (input_file);

  if (!bfd_check_format_matches (abfd, bfd_object, &matching))
    {
      bfd_nonfatal (input_file);
      if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
	{
	  list_matching_formats (matching);
	  free (matching);
	}
      exit (1);
    }

  file = fopen (output_file, FOPEN_WB);

  if (!file)
    {
      fatal (_("unable to open output file %s"), output_file);
    }

  if (debug)
    printf ("ids %d %d\n", base1, base2);
  tree = coff_grok (abfd);
  if (!noprescan)
    prescan (tree);
  wr_module (tree);
  return 0;
}