19990502 sourceware importbinu_ss_19990502

1 files changed, 1535 insertions, 0 deletions

diff --git a/bfd/oasys.c b/bfd/oasys.c
new file mode 100644
index 0000000..b51560e
--- /dev/null
+++ b/bfd/oasys.c
@@ -0,0 +1,1535 @@
+/* BFD back-end for oasys objects.
+   Copyright 1990, 91, 92, 93, 94, 95, 96, 97, 1998
+   Free Software Foundation, Inc.
+   Written by Steve Chamberlain of Cygnus Support, <sac@cygnus.com>.
+
+This file is part of BFD, the Binary File Descriptor library.
+
+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.  */
+
+#define UNDERSCORE_HACK 1
+#include "bfd.h"
+#include "sysdep.h"
+#include <ctype.h>
+#include "libbfd.h"
+#include "oasys.h"
+#include "liboasys.h"
+
+/* XXX - FIXME.  offsetof belongs in the system-specific files in
+   ../include/sys. */
+/* Define offsetof for those systems which lack it */
+
+#ifndef offsetof
+#define offsetof(type, identifier) (size_t) &(((type *) 0)->identifier)
+#endif
+
+static boolean oasys_read_record PARAMS ((bfd *,
+					  oasys_record_union_type *));
+static boolean oasys_write_sections PARAMS ((bfd *));
+static boolean oasys_write_record PARAMS ((bfd *,
+					   oasys_record_enum_type,
+					   oasys_record_union_type *,
+					   size_t));
+static boolean oasys_write_syms PARAMS ((bfd *));
+static boolean oasys_write_header PARAMS ((bfd *));
+static boolean oasys_write_end PARAMS ((bfd *));
+static boolean oasys_write_data PARAMS ((bfd *));
+
+/* Read in all the section data and relocation stuff too */
+PROTO (static boolean, oasys_slurp_section_data, (bfd * CONST abfd));
+
+static boolean
+oasys_read_record (abfd, record)
+     bfd *abfd;
+     oasys_record_union_type *record;
+{
+  if (bfd_read ((PTR) record, 1, sizeof (record->header), abfd)
+      != sizeof (record->header))
+    return false;
+
+  if ((size_t) record->header.length <= (size_t) sizeof (record->header))
+    return true;
+  if (bfd_read ((PTR) (((char *) record) + sizeof (record->header)),
+		1, record->header.length - sizeof (record->header),
+		abfd)
+      != record->header.length - sizeof (record->header))
+    return false;
+  return true;
+}
+static size_t
+oasys_string_length (record)
+     oasys_record_union_type *record;
+{
+  return record->header.length
+    - ((char *) record->symbol.name - (char *) record);
+}
+
+/*****************************************************************************/
+
+/*
+
+Slurp the symbol table by reading in all the records at the start file
+till we get to the first section record.
+
+We'll sort the symbolss into  two lists, defined and undefined. The
+undefined symbols will be placed into the table according to their
+refno.
+
+We do this by placing all undefined symbols at the front of the table
+moving in, and the defined symbols at the end of the table moving back.
+
+*/
+
+static boolean
+oasys_slurp_symbol_table (abfd)
+     bfd *CONST abfd;
+{
+  oasys_record_union_type record;
+  oasys_data_type *data = OASYS_DATA (abfd);
+  boolean loop = true;
+  asymbol *dest_defined;
+  asymbol *dest;
+  char *string_ptr;
+
+
+  if (data->symbols != (asymbol *) NULL)
+    {
+      return true;
+    }
+  /* Buy enough memory for all the symbols and all the names */
+  data->symbols =
+    (asymbol *) bfd_alloc (abfd, sizeof (asymbol) * abfd->symcount);
+#ifdef UNDERSCORE_HACK
+  /* buy 1 more char for each symbol to keep the underscore in*/
+  data->strings = bfd_alloc (abfd, data->symbol_string_length +
+			     abfd->symcount);
+#else
+  data->strings = bfd_alloc (abfd, data->symbol_string_length);
+#endif
+  if (!data->symbols || !data->strings)
+    return false;
+
+  dest_defined = data->symbols + abfd->symcount - 1;
+
+  string_ptr = data->strings;
+  if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
+    return false;
+  while (loop)
+    {
+
+      if (! oasys_read_record (abfd, &record))
+	return false;
+      switch (record.header.type)
+	{
+	case oasys_record_is_header_enum:
+	  break;
+	case oasys_record_is_local_enum:
+	case oasys_record_is_symbol_enum:
+	  {
+	    int flag = record.header.type == (int) oasys_record_is_local_enum ?
+	    (BSF_LOCAL) : (BSF_GLOBAL | BSF_EXPORT);
+
+
+	    size_t length = oasys_string_length (&record);
+	    switch (record.symbol.relb & RELOCATION_TYPE_BITS)
+	      {
+	      case RELOCATION_TYPE_ABS:
+		dest = dest_defined--;
+		dest->section = bfd_abs_section_ptr;
+		dest->flags = 0;
+
+		break;
+	      case RELOCATION_TYPE_REL:
+		dest = dest_defined--;
+		dest->section =
+		  OASYS_DATA (abfd)->sections[record.symbol.relb &
+					      RELOCATION_SECT_BITS];
+		if (record.header.type == (int) oasys_record_is_local_enum)
+		  {
+		    dest->flags = BSF_LOCAL;
+		    if (dest->section == (asection *) (~0))
+		      {
+			/* It seems that sometimes internal symbols are tied up, but
+		       still get output, even though there is no
+		       section */
+			dest->section = 0;
+		      }
+		  }
+		else
+		  {
+
+		    dest->flags = flag;
+		  }
+		break;
+	      case RELOCATION_TYPE_UND:
+		dest = data->symbols + bfd_h_get_16 (abfd, record.symbol.refno);
+		dest->section = bfd_und_section_ptr;
+		break;
+	      case RELOCATION_TYPE_COM:
+		dest = dest_defined--;
+		dest->name = string_ptr;
+		dest->the_bfd = abfd;
+
+		dest->section = bfd_com_section_ptr;
+
+		break;
+	      default:
+		dest = dest_defined--;
+		BFD_ASSERT (0);
+		break;
+	      }
+	    dest->name = string_ptr;
+	    dest->the_bfd = abfd;
+	    dest->udata.p = (PTR) NULL;
+	    dest->value = bfd_h_get_32 (abfd, record.symbol.value);
+
+#ifdef UNDERSCORE_HACK
+	    if (record.symbol.name[0] != '_')
+	      {
+		string_ptr[0] = '_';
+		string_ptr++;
+	      }
+#endif
+	    memcpy (string_ptr, record.symbol.name, length);
+
+
+	    string_ptr[length] = 0;
+	    string_ptr += length + 1;
+	  }
+	  break;
+	default:
+	  loop = false;
+	}
+    }
+  return true;
+}
+
+static long
+oasys_get_symtab_upper_bound (abfd)
+     bfd *CONST abfd;
+{
+  if (! oasys_slurp_symbol_table (abfd))
+    return -1;
+
+  return (abfd->symcount + 1) * (sizeof (oasys_symbol_type *));
+}
+
+/*
+*/
+
+extern const bfd_target oasys_vec;
+
+long
+oasys_get_symtab (abfd, location)
+     bfd *abfd;
+     asymbol **location;
+{
+  asymbol *symbase;
+  unsigned int counter;
+  if (oasys_slurp_symbol_table (abfd) == false)
+    {
+      return -1;
+    }
+  symbase = OASYS_DATA (abfd)->symbols;
+  for (counter = 0; counter < abfd->symcount; counter++)
+    {
+      *(location++) = symbase++;
+    }
+  *location = 0;
+  return abfd->symcount;
+}
+
+/***********************************************************************
+*  archive stuff
+*/
+
+static const bfd_target *
+oasys_archive_p (abfd)
+     bfd *abfd;
+{
+  oasys_archive_header_type header;
+  oasys_extarchive_header_type header_ext;
+  unsigned int i;
+  file_ptr filepos;
+
+  if (bfd_seek (abfd, (file_ptr) 0, false) != 0
+      || (bfd_read ((PTR) & header_ext, 1, sizeof (header_ext), abfd)
+	  != sizeof (header_ext)))
+    {
+      if (bfd_get_error () != bfd_error_system_call)
+	bfd_set_error (bfd_error_wrong_format);
+      return NULL;
+    }
+
+  header.version = bfd_h_get_32 (abfd, header_ext.version);
+  header.mod_count = bfd_h_get_32 (abfd, header_ext.mod_count);
+  header.mod_tbl_offset = bfd_h_get_32 (abfd, header_ext.mod_tbl_offset);
+  header.sym_tbl_size = bfd_h_get_32 (abfd, header_ext.sym_tbl_size);
+  header.sym_count = bfd_h_get_32 (abfd, header_ext.sym_count);
+  header.sym_tbl_offset = bfd_h_get_32 (abfd, header_ext.sym_tbl_offset);
+  header.xref_count = bfd_h_get_32 (abfd, header_ext.xref_count);
+  header.xref_lst_offset = bfd_h_get_32 (abfd, header_ext.xref_lst_offset);
+
+  /*
+    There isn't a magic number in an Oasys archive, so the best we
+    can do to verify reasnableness is to make sure that the values in
+    the header are too weird
+    */
+
+  if (header.version > 10000 ||
+      header.mod_count > 10000 ||
+      header.sym_count > 100000 ||
+      header.xref_count > 100000)
+    return (const bfd_target *) NULL;
+
+  /*
+    That all worked, let's buy the space for the header and read in
+    the headers.
+    */
+  {
+    oasys_ar_data_type *ar =
+    (oasys_ar_data_type *) bfd_alloc (abfd, sizeof (oasys_ar_data_type));
+
+    oasys_module_info_type *module =
+    (oasys_module_info_type *)
+    bfd_alloc (abfd, sizeof (oasys_module_info_type) * header.mod_count);
+    oasys_module_table_type record;
+
+    if (!ar || !module)
+      return NULL;
+
+    abfd->tdata.oasys_ar_data = ar;
+    ar->module = module;
+    ar->module_count = header.mod_count;
+
+    filepos = header.mod_tbl_offset;
+    for (i = 0; i < header.mod_count; i++)
+      {
+	if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
+	  return NULL;
+
+	/* There are two ways of specifying the archive header */
+
+	if (0)
+	  {
+	    oasys_extmodule_table_type_a_type record_ext;
+	    if (bfd_read ((PTR) & record_ext, 1, sizeof (record_ext), abfd)
+		!= sizeof (record_ext))
+	      return NULL;
+
+	    record.mod_size = bfd_h_get_32 (abfd, record_ext.mod_size);
+	    record.file_offset = bfd_h_get_32 (abfd, record_ext.file_offset);
+
+	    record.dep_count = bfd_h_get_32 (abfd, record_ext.dep_count);
+	    record.depee_count = bfd_h_get_32 (abfd, record_ext.depee_count);
+	    record.sect_count = bfd_h_get_32 (abfd, record_ext.sect_count);
+
+	    module[i].name = bfd_alloc (abfd, 33);
+	    if (!module[i].name)
+	      return NULL;
+
+	    memcpy (module[i].name, record_ext.mod_name, 33);
+	    filepos +=
+	      sizeof (record_ext) +
+	      record.dep_count * 4 +
+	      record.depee_count * 4 +
+	      record.sect_count * 8 + 187;
+	  }
+	else
+	  {
+	    oasys_extmodule_table_type_b_type record_ext;
+	    if (bfd_read ((PTR) & record_ext, 1, sizeof (record_ext), abfd)
+		!= sizeof (record_ext))
+	      return NULL;
+
+	    record.mod_size = bfd_h_get_32 (abfd, record_ext.mod_size);
+	    record.file_offset = bfd_h_get_32 (abfd, record_ext.file_offset);
+
+	    record.dep_count = bfd_h_get_32 (abfd, record_ext.dep_count);
+	    record.depee_count = bfd_h_get_32 (abfd, record_ext.depee_count);
+	    record.sect_count = bfd_h_get_32 (abfd, record_ext.sect_count);
+	    record.module_name_size = bfd_h_get_32 (abfd, record_ext.mod_name_length);
+
+	    module[i].name = bfd_alloc (abfd, record.module_name_size + 1);
+	    if (!module[i].name)
+	      return NULL;
+	    if (bfd_read ((PTR) module[i].name, 1, record.module_name_size,
+			  abfd)
+		!= record.module_name_size)
+	      return NULL;
+	    module[i].name[record.module_name_size] = 0;
+	    filepos +=
+	      sizeof (record_ext) +
+	      record.dep_count * 4 +
+	      record.module_name_size + 1;
+
+	  }
+
+
+	module[i].size = record.mod_size;
+	module[i].pos = record.file_offset;
+	module[i].abfd = 0;
+      }
+
+  }
+  return abfd->xvec;
+}
+
+static boolean
+oasys_mkobject (abfd)
+     bfd *abfd;
+{
+
+  abfd->tdata.oasys_obj_data = (oasys_data_type *) bfd_alloc (abfd, sizeof (oasys_data_type));
+  return abfd->tdata.oasys_obj_data ? true : false;
+}
+
+#define MAX_SECS 16
+static const bfd_target *
+oasys_object_p (abfd)
+     bfd *abfd;
+{
+  oasys_data_type *oasys;
+  oasys_data_type *save = OASYS_DATA (abfd);
+  boolean loop = true;
+  boolean had_usefull = false;
+
+  abfd->tdata.oasys_obj_data = 0;
+  oasys_mkobject (abfd);
+  oasys = OASYS_DATA (abfd);
+  memset ((PTR) oasys->sections, 0xff, sizeof (oasys->sections));
+
+  /* Point to the start of the file */
+  if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
+    goto fail;
+  oasys->symbol_string_length = 0;
+  /* Inspect the records, but only keep the section info -
+     remember the size of the symbols
+     */
+  oasys->first_data_record = 0;
+  while (loop)
+    {
+      oasys_record_union_type record;
+      if (! oasys_read_record (abfd, &record))
+	goto fail;
+      if ((size_t) record.header.length < (size_t) sizeof (record.header))
+	goto fail;
+
+
+      switch ((oasys_record_enum_type) (record.header.type))
+	{
+	case oasys_record_is_header_enum:
+	  had_usefull = true;
+	  break;
+	case oasys_record_is_symbol_enum:
+	case oasys_record_is_local_enum:
+	  /* Count symbols and remember their size for a future malloc   */
+	  abfd->symcount++;
+	  oasys->symbol_string_length += 1 + oasys_string_length (&record);
+	  had_usefull = true;
+	  break;
+	case oasys_record_is_section_enum:
+	  {
+	    asection *s;
+	    char *buffer;
+	    unsigned int section_number;
+	    if (record.section.header.length != sizeof (record.section))
+	      {
+		goto fail;
+	      }
+	    buffer = bfd_alloc (abfd, 3);
+	    if (!buffer)
+	      goto fail;
+	    section_number = record.section.relb & RELOCATION_SECT_BITS;
+	    sprintf (buffer, "%u", section_number);
+	    s = bfd_make_section (abfd, buffer);
+	    oasys->sections[section_number] = s;
+	    switch (record.section.relb & RELOCATION_TYPE_BITS)
+	      {
+	      case RELOCATION_TYPE_ABS:
+	      case RELOCATION_TYPE_REL:
+		break;
+	      case RELOCATION_TYPE_UND:
+	      case RELOCATION_TYPE_COM:
+		BFD_FAIL ();
+	      }
+
+	    s->_raw_size = bfd_h_get_32 (abfd, record.section.value);
+	    s->vma = bfd_h_get_32 (abfd, record.section.vma);
+	    s->flags = 0;
+	    had_usefull = true;
+	  }
+	  break;
+	case oasys_record_is_data_enum:
+	  oasys->first_data_record = bfd_tell (abfd) - record.header.length;
+	case oasys_record_is_debug_enum:
+	case oasys_record_is_module_enum:
+	case oasys_record_is_named_section_enum:
+	case oasys_record_is_end_enum:
+	  if (had_usefull == false)
+	    goto fail;
+	  loop = false;
+	  break;
+	default:
+	  goto fail;
+	}
+    }
+  oasys->symbols = (asymbol *) NULL;
+  /*
+    Oasys support several architectures, but I can't see a simple way
+    to discover which one is in a particular file - we'll guess
+    */
+  bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 0);
+  if (abfd->symcount != 0)
+    {
+      abfd->flags |= HAS_SYMS;
+    }
+
+  /*
+    We don't know if a section has data until we've read it..
+    */
+
+  oasys_slurp_section_data (abfd);
+
+
+  return abfd->xvec;
+
+fail:
+  (void) bfd_release (abfd, oasys);
+  abfd->tdata.oasys_obj_data = save;
+  return (const bfd_target *) NULL;
+}
+
+
+static void
+oasys_get_symbol_info (ignore_abfd, symbol, ret)
+     bfd *ignore_abfd;
+     asymbol *symbol;
+     symbol_info *ret;
+{
+  bfd_symbol_info (symbol, ret);
+  if (!symbol->section)
+    ret->type = (symbol->flags & BSF_LOCAL) ? 'a' : 'A';
+}
+
+static void
+oasys_print_symbol (ignore_abfd, afile, symbol, how)
+     bfd *ignore_abfd;
+     PTR afile;
+     asymbol *symbol;
+     bfd_print_symbol_type how;
+{
+  FILE *file = (FILE *) afile;
+
+  switch (how)
+    {
+    case bfd_print_symbol_name:
+    case bfd_print_symbol_more:
+      fprintf (file, "%s", symbol->name);
+      break;
+    case bfd_print_symbol_all:
+      {
+	CONST char *section_name = symbol->section == (asection *) NULL ?
+	(CONST char *) "*abs" : symbol->section->name;
+
+	bfd_print_symbol_vandf ((PTR) file, symbol);
+
+	fprintf (file, " %-5s %s",
+		 section_name,
+		 symbol->name);
+      }
+      break;
+    }
+}
+/*
+ The howto table is build using the top two bits of a reloc byte to
+ index into it. The bits are PCREL,WORD/LONG
+*/
+static reloc_howto_type howto_table[] =
+{
+
+  HOWTO (0, 0, 1, 16, false, 0, complain_overflow_bitfield, 0, "abs16", true, 0x0000ffff, 0x0000ffff, false),
+  HOWTO (0, 0, 2, 32, false, 0, complain_overflow_bitfield, 0, "abs32", true, 0xffffffff, 0xffffffff, false),
+  HOWTO (0, 0, 1, 16, true, 0, complain_overflow_signed, 0, "pcrel16", true, 0x0000ffff, 0x0000ffff, false),
+  HOWTO (0, 0, 2, 32, true, 0, complain_overflow_signed, 0, "pcrel32", true, 0xffffffff, 0xffffffff, false)
+};
+
+/* Read in all the section data and relocation stuff too */
+static boolean
+oasys_slurp_section_data (abfd)
+     bfd *CONST abfd;
+{
+  oasys_record_union_type record;
+  oasys_data_type *data = OASYS_DATA (abfd);
+  boolean loop = true;
+
+  oasys_per_section_type *per;
+
+  asection *s;
+
+  /* See if the data has been slurped already .. */
+  for (s = abfd->sections; s != (asection *) NULL; s = s->next)
+    {
+      per = oasys_per_section (s);
+      if (per->initialized == true)
+	return true;
+    }
+
+  if (data->first_data_record == 0)
+    return true;
+
+  if (bfd_seek (abfd, data->first_data_record, SEEK_SET) != 0)
+    return false;
+  while (loop)
+    {
+      if (! oasys_read_record (abfd, &record))
+	return false;
+      switch (record.header.type)
+	{
+	case oasys_record_is_header_enum:
+	  break;
+	case oasys_record_is_data_enum:
+	  {
+
+	    bfd_byte *src = record.data.data;
+	    bfd_byte *end_src = ((bfd_byte *) & record) + record.header.length;
+	    bfd_byte *dst_ptr;
+	    bfd_byte *dst_base_ptr;
+	    unsigned int relbit;
+	    unsigned int count;
+	    asection *section =
+	    data->sections[record.data.relb & RELOCATION_SECT_BITS];
+	    bfd_vma dst_offset;
+
+	    per = oasys_per_section (section);
+
+	    if (per->initialized == false)
+	      {
+		per->data = (bfd_byte *) bfd_zalloc (abfd, section->_raw_size);
+		if (!per->data)
+		  return false;
+		per->reloc_tail_ptr = (oasys_reloc_type **) & (section->relocation);
+		per->had_vma = false;
+		per->initialized = true;
+		section->reloc_count = 0;
+		section->flags = SEC_ALLOC;
+	      }
+
+	    dst_offset = bfd_h_get_32 (abfd, record.data.addr);
+	    if (per->had_vma == false)
+	      {
+		/* Take the first vma we see as the base */
+		section->vma = dst_offset;
+		per->had_vma = true;
+	      }
+
+	    dst_offset -= section->vma;
+
+	    dst_base_ptr = oasys_per_section (section)->data;
+	    dst_ptr = oasys_per_section (section)->data +
+	      dst_offset;
+
+	    if (src < end_src)
+	      {
+		section->flags |= SEC_LOAD | SEC_HAS_CONTENTS;
+	      }
+	    while (src < end_src)
+	      {
+		unsigned char mod_byte = *src++;
+		size_t gap = end_src - src;
+
+		count = 8;
+		if (mod_byte == 0 && gap >= 8)
+		  {
+		    dst_ptr[0] = src[0];
+		    dst_ptr[1] = src[1];
+		    dst_ptr[2] = src[2];
+		    dst_ptr[3] = src[3];
+		    dst_ptr[4] = src[4];
+		    dst_ptr[5] = src[5];
+		    dst_ptr[6] = src[6];
+		    dst_ptr[7] = src[7];
+		    dst_ptr += 8;
+		    src += 8;
+		  }
+		else
+		  {
+		    for (relbit = 1; count-- != 0 && src < end_src; relbit <<= 1)
+		      {
+			if (relbit & mod_byte)
+			  {
+			    unsigned char reloc = *src;
+			    /* This item needs to be relocated */
+			    switch (reloc & RELOCATION_TYPE_BITS)
+			      {
+			      case RELOCATION_TYPE_ABS:
+
+				break;
+
+			      case RELOCATION_TYPE_REL:
+				{
+				  /* Relocate the item relative to the section */
+				  oasys_reloc_type *r =
+				  (oasys_reloc_type *)
+				  bfd_alloc (abfd,
+					     sizeof (oasys_reloc_type));
+				  if (!r)
+				    return false;
+				  *(per->reloc_tail_ptr) = r;
+				  per->reloc_tail_ptr = &r->next;
+				  r->next = (oasys_reloc_type *) NULL;
+				  /* Reference to undefined symbol */
+				  src++;
+				  /* There is no symbol */
+				  r->symbol = 0;
+				  /* Work out the howto */
+				  abort ();
+#if 0
+				  r->relent.section =
+				    data->sections[reloc &
+						   RELOCATION_SECT_BITS];
+
+				  r->relent.addend = -
+				    r->relent.section->vma;
+#endif
+				  r->relent.address = dst_ptr - dst_base_ptr;
+				  r->relent.howto = &howto_table[reloc >> 6];
+				  r->relent.sym_ptr_ptr = (asymbol **) NULL;
+				  section->reloc_count++;
+
+				  /* Fake up the data to look like it's got the -ve pc in it, this makes
+				       it much easier to convert into other formats. This is done by
+				       hitting the addend.
+				       */
+				  if (r->relent.howto->pc_relative == true)
+				    {
+				      r->relent.addend -= dst_ptr - dst_base_ptr;
+				    }
+
+
+				}
+				break;
+
+
+			      case RELOCATION_TYPE_UND:
+				{
+				  oasys_reloc_type *r =
+				  (oasys_reloc_type *)
+				  bfd_alloc (abfd,
+					     sizeof (oasys_reloc_type));
+				  if (!r)
+				    return false;
+				  *(per->reloc_tail_ptr) = r;
+				  per->reloc_tail_ptr = &r->next;
+				  r->next = (oasys_reloc_type *) NULL;
+				  /* Reference to undefined symbol */
+				  src++;
+				  /* Get symbol number */
+				  r->symbol = (src[0] << 8) | src[1];
+				  /* Work out the howto */
+				  abort ();
+
+#if 0
+				  r->relent.section = (asection
+						       *) NULL;
+#endif
+				  r->relent.addend = 0;
+				  r->relent.address = dst_ptr - dst_base_ptr;
+				  r->relent.howto = &howto_table[reloc >> 6];
+				  r->relent.sym_ptr_ptr = (asymbol **) NULL;
+				  section->reloc_count++;
+
+				  src += 2;
+				  /* Fake up the data to look like it's got the -ve pc in it, this makes
+				       it much easier to convert into other formats. This is done by
+				       hitting the addend.
+				       */
+				  if (r->relent.howto->pc_relative == true)
+				    {
+				      r->relent.addend -= dst_ptr - dst_base_ptr;
+				    }
+
+
+
+				}
+				break;
+			      case RELOCATION_TYPE_COM:
+				BFD_FAIL ();
+			      }
+			  }
+			*dst_ptr++ = *src++;
+		      }
+		  }
+	      }
+	  }
+	  break;
+	case oasys_record_is_local_enum:
+	case oasys_record_is_symbol_enum:
+	case oasys_record_is_section_enum:
+	  break;
+	default:
+	  loop = false;
+	}
+    }
+
+  return true;
+
+}
+
+static boolean
+oasys_new_section_hook (abfd, newsect)
+     bfd *abfd;
+     asection *newsect;
+{
+  newsect->used_by_bfd = (PTR)
+    bfd_alloc (abfd, sizeof (oasys_per_section_type));
+  if (!newsect->used_by_bfd)
+    return false;
+  oasys_per_section (newsect)->data = (bfd_byte *) NULL;
+  oasys_per_section (newsect)->section = newsect;
+  oasys_per_section (newsect)->offset = 0;
+  oasys_per_section (newsect)->initialized = false;
+  newsect->alignment_power = 1;
+  /* Turn the section string into an index */
+
+  sscanf (newsect->name, "%u", &newsect->target_index);
+
+  return true;
+}
+
+
+static long
+oasys_get_reloc_upper_bound (abfd, asect)
+     bfd *abfd;
+     sec_ptr asect;
+{
+  if (! oasys_slurp_section_data (abfd))
+    return -1;
+  return (asect->reloc_count + 1) * sizeof (arelent *);
+}
+
+static boolean
+oasys_get_section_contents (abfd, section, location, offset, count)
+     bfd *abfd;
+     sec_ptr section;
+     PTR location;
+     file_ptr offset;
+     bfd_size_type count;
+{
+  oasys_per_section_type *p = (oasys_per_section_type *) section->used_by_bfd;
+  oasys_slurp_section_data (abfd);
+  if (p->initialized == false)
+    {
+      (void) memset (location, 0, (int) count);
+    }
+  else
+    {
+      (void) memcpy (location, (PTR) (p->data + offset), (int) count);
+    }
+  return true;
+}
+
+
+long
+oasys_canonicalize_reloc (ignore_abfd, section, relptr, symbols)
+     bfd *ignore_abfd;
+     sec_ptr section;
+     arelent **relptr;
+     asymbol **symbols;
+{
+  unsigned int reloc_count = 0;
+  oasys_reloc_type *src = (oasys_reloc_type *) (section->relocation);
+  while (src != (oasys_reloc_type *) NULL)
+    {
+      abort ();
+
+#if 0
+      if (src->relent.section == (asection *) NULL)
+	{
+	  src->relent.sym_ptr_ptr = symbols + src->symbol;
+	}
+#endif
+
+      *relptr++ = &src->relent;
+      src = src->next;
+      reloc_count++;
+    }
+  *relptr = (arelent *) NULL;
+  return section->reloc_count = reloc_count;
+}
+
+
+
+
+/* Writing */
+
+
+/* Calculate the checksum and write one record */
+static boolean
+oasys_write_record (abfd, type, record, size)
+     bfd *abfd;
+     oasys_record_enum_type type;
+     oasys_record_union_type *record;
+     size_t size;
+{
+  int checksum;
+  size_t i;
+  unsigned char *ptr;
+
+  record->header.length = size;
+  record->header.type = (int) type;
+  record->header.check_sum = 0;
+  record->header.fill = 0;
+  ptr = (unsigned char *) &record->pad[0];
+  checksum = 0;
+  for (i = 0; i < size; i++)
+    {
+      checksum += *ptr++;
+    }
+  record->header.check_sum = 0xff & (-checksum);
+  if (bfd_write ((PTR) record, 1, size, abfd) != size)
+    return false;
+  return true;
+}
+
+
+/* Write out all the symbols */
+static boolean
+oasys_write_syms (abfd)
+     bfd *abfd;
+{
+  unsigned int count;
+  asymbol **generic = bfd_get_outsymbols (abfd);
+  unsigned int index = 0;
+  for (count = 0; count < bfd_get_symcount (abfd); count++)
+    {
+
+      oasys_symbol_record_type symbol;
+      asymbol *CONST g = generic[count];
+
+      CONST char *src = g->name;
+      char *dst = symbol.name;
+      unsigned int l = 0;
+
+      if (bfd_is_com_section (g->section))
+	{
+	  symbol.relb = RELOCATION_TYPE_COM;
+	  bfd_h_put_16 (abfd, index, symbol.refno);
+	  index++;
+	}
+      else if (bfd_is_abs_section (g->section))
+	{
+	  symbol.relb = RELOCATION_TYPE_ABS;
+	  bfd_h_put_16 (abfd, 0, symbol.refno);
+
+	}
+      else if (bfd_is_und_section (g->section))
+	{
+	  symbol.relb = RELOCATION_TYPE_UND;
+	  bfd_h_put_16 (abfd, index, symbol.refno);
+	  /* Overload the value field with the output index number */
+	  index++;
+	}
+      else if (g->flags & BSF_DEBUGGING)
+	{
+	  /* throw it away */
+	  continue;
+	}
+      else
+	{
+	  if (g->section == (asection *) NULL)
+	    {
+	      /* Sometime, the oasys tools give out a symbol with illegal
+	   bits in it, we'll output it in the same broken way */
+
+	      symbol.relb = RELOCATION_TYPE_REL | 0;
+	    }
+	  else
+	    {
+	      symbol.relb = RELOCATION_TYPE_REL | g->section->output_section->target_index;
+	    }
+	  bfd_h_put_16 (abfd, 0, symbol.refno);
+	}
+#ifdef UNDERSCORE_HACK
+      if (src[l] == '_')
+	dst[l++] = '.';
+#endif
+      while (src[l])
+	{
+	  dst[l] = src[l];
+	  l++;
+	}
+
+      bfd_h_put_32 (abfd, g->value, symbol.value);
+
+
+      if (g->flags & BSF_LOCAL)
+	{
+	  if (! oasys_write_record (abfd,
+				    oasys_record_is_local_enum,
+				    (oasys_record_union_type *) & symbol,
+				    offsetof (oasys_symbol_record_type,
+					      name[0]) + l))
+	    return false;
+	}
+      else
+	{
+	  if (! oasys_write_record (abfd,
+				    oasys_record_is_symbol_enum,
+				    (oasys_record_union_type *) & symbol,
+				    offsetof (oasys_symbol_record_type,
+					      name[0]) + l))
+	    return false;
+	}
+      g->value = index - 1;
+    }
+
+  return true;
+}
+
+
+ /* Write a section header for each section */
+static boolean
+oasys_write_sections (abfd)
+     bfd *abfd;
+{
+  asection *s;
+  static oasys_section_record_type out;
+
+  for (s = abfd->sections; s != (asection *) NULL; s = s->next)
+    {
+      if (!isdigit ((unsigned char) s->name[0]))
+	{
+	  (*_bfd_error_handler)
+	    (_("%s: can not represent section `%s' in oasys"),
+	     bfd_get_filename (abfd), s->name);
+	  bfd_set_error (bfd_error_nonrepresentable_section);
+	  return false;
+	}
+      out.relb = RELOCATION_TYPE_REL | s->target_index;
+      bfd_h_put_32 (abfd, s->_cooked_size, out.value);
+      bfd_h_put_32 (abfd, s->vma, out.vma);
+
+      if (! oasys_write_record (abfd,
+				oasys_record_is_section_enum,
+				(oasys_record_union_type *) & out,
+				sizeof (out)))
+	return false;
+    }
+  return true;
+}
+
+static boolean
+oasys_write_header (abfd)
+     bfd *abfd;
+{
+  /* Create and write the header */
+  oasys_header_record_type r;
+  size_t length = strlen (abfd->filename);
+  if (length > (size_t) sizeof (r.module_name))
+    {
+      length = sizeof (r.module_name);
+    }
+
+  (void) memcpy (r.module_name,
+		 abfd->filename,
+		 length);
+  (void) memset (r.module_name + length,
+		 ' ',
+		 sizeof (r.module_name) - length);
+
+  r.version_number = OASYS_VERSION_NUMBER;
+  r.rev_number = OASYS_REV_NUMBER;
+  if (! oasys_write_record (abfd,
+			    oasys_record_is_header_enum,
+			    (oasys_record_union_type *) & r,
+			    offsetof (oasys_header_record_type,
+				      description[0])))
+    return false;
+
+  return true;
+}
+
+static boolean
+oasys_write_end (abfd)
+     bfd *abfd;
+{
+  oasys_end_record_type end;
+  unsigned char null = 0;
+  end.relb = RELOCATION_TYPE_ABS;
+  bfd_h_put_32 (abfd, abfd->start_address, end.entry);
+  bfd_h_put_16 (abfd, 0, end.fill);
+  end.zero = 0;
+  if (! oasys_write_record (abfd,
+			    oasys_record_is_end_enum,
+			    (oasys_record_union_type *) & end,
+			    sizeof (end)))
+    return false;
+  if (bfd_write ((PTR) & null, 1, 1, abfd) != 1)
+    return false;
+  return true;
+}
+
+static int
+comp (ap, bp)
+     CONST PTR ap;
+     CONST PTR bp;
+{
+  arelent *a = *((arelent **) ap);
+  arelent *b = *((arelent **) bp);
+  return a->address - b->address;
+}
+
+/*
+ Writing data..
+
+*/
+static boolean
+oasys_write_data (abfd)
+     bfd *abfd;
+{
+  asection *s;
+  for (s = abfd->sections; s != (asection *) NULL; s = s->next)
+    {
+      if (s->flags & SEC_LOAD)
+	{
+	  bfd_byte *raw_data = oasys_per_section (s)->data;
+	  oasys_data_record_type processed_data;
+	  bfd_size_type current_byte_index = 0;
+	  unsigned int relocs_to_go = s->reloc_count;
+	  arelent **p = s->orelocation;
+	  if (s->reloc_count != 0)
+	    {
+/* Sort the reloc records so it's easy to insert the relocs into the
+	   data */
+
+	      qsort (s->orelocation,
+		     s->reloc_count,
+		     sizeof (arelent **),
+		     comp);
+	    }
+	  current_byte_index = 0;
+	  processed_data.relb = s->target_index | RELOCATION_TYPE_REL;
+
+	  while (current_byte_index < s->_cooked_size)
+	    {
+	      /* Scan forwards by eight bytes or however much is left and see if
+	       there are any relocations going on */
+	      bfd_byte *mod = &processed_data.data[0];
+	      bfd_byte *dst = &processed_data.data[1];
+
+	      unsigned int i = 0;
+	      *mod = 0;
+
+
+	      bfd_h_put_32 (abfd, s->vma + current_byte_index,
+			    processed_data.addr);
+
+	      /* Don't start a relocation unless you're sure you can finish it
+ 	       within the same data record.  The worst case relocation is a
+ 	       4-byte relocatable value which is split across two modification
+ 	       bytes (1 relocation byte + 2 symbol reference bytes + 2 data +
+ 	       1 modification byte + 2 data = 8 bytes total).  That's where
+ 	       the magic number 8 comes from.
+ 	    */
+	      while (current_byte_index < s->_raw_size && dst <=
+		     &processed_data.data[sizeof (processed_data.data) - 8])
+		{
+
+
+		  if (relocs_to_go != 0)
+		    {
+		      arelent *r = *p;
+		      reloc_howto_type *const how = r->howto;
+		      /* There is a relocation, is it for this byte ? */
+		      if (r->address == current_byte_index)
+			{
+			  unsigned char rel_byte;
+
+			  p++;
+			  relocs_to_go--;
+
+			  *mod |= (1 << i);
+			  if (how->pc_relative)
+			    {
+			      rel_byte = RELOCATION_PCREL_BIT;
+
+			      /* Also patch the raw data so that it doesn't have
+			 the -ve stuff any more */
+			      if (how->size != 2)
+				{
+				  bfd_put_16 (abfd,
+					      bfd_get_16 (abfd, raw_data) +
+					      current_byte_index, raw_data);
+				}
+
+			      else
+				{
+				  bfd_put_32 (abfd,
+					      bfd_get_32 (abfd, raw_data) +
+					      current_byte_index, raw_data);
+				}
+			    }
+			  else
+			    {
+			      rel_byte = 0;
+			    }
+			  if (how->size == 2)
+			    {
+			      rel_byte |= RELOCATION_32BIT_BIT;
+			    }
+
+			  /* Is this a section relative relocation, or a symbol
+		       relative relocation ? */
+			  abort ();
+
+#if 0
+			  if (r->section != (asection *) NULL)
+			    {
+			      /* The relent has a section attached, so it must be section
+			     relative */
+			      rel_byte |= RELOCATION_TYPE_REL;
+			      rel_byte |= r->section->output_section->target_index;
+			      *dst++ = rel_byte;
+			    }
+			  else
+#endif
+			    {
+			      asymbol *p = *(r->sym_ptr_ptr);
+
+			      /* If this symbol has a section attached, then it
+			     has already been resolved.  Change from a symbol
+			     ref to a section ref */
+			      if (p->section != (asection *) NULL)
+				{
+				  rel_byte |= RELOCATION_TYPE_REL;
+				  rel_byte |=
+				    p->section->output_section->target_index;
+				  *dst++ = rel_byte;
+				}
+			      else
+				{
+				  rel_byte |= RELOCATION_TYPE_UND;
+				  *dst++ = rel_byte;
+				  /* Next two bytes are a symbol index - we can get
+			       this from the symbol value which has been zapped
+			       into the symbol index in the table when the
+			       symbol table was written
+			       */
+				  *dst++ = p->value >> 8;
+				  *dst++ = p->value;
+				}
+			    }
+#define ADVANCE { if (++i >= 8) { i = 0; mod = dst++; *mod = 0; } current_byte_index++; }
+			  /* relocations never occur from an unloadable section,
+		       so we can assume that raw_data is not NULL
+		     */
+			  *dst++ = *raw_data++;
+			  ADVANCE
+			    * dst++ = *raw_data++;
+			  ADVANCE
+			    if (how->size == 2)
+			    {
+			      *dst++ = *raw_data++;
+			      ADVANCE
+				* dst++ = *raw_data++;
+			      ADVANCE
+			    }
+			  continue;
+			}
+		    }
+		  /* If this is coming from an unloadable section then copy
+		   zeros */
+		  if (raw_data == NULL)
+		    {
+		      *dst++ = 0;
+		    }
+		  else
+		    {
+		      *dst++ = *raw_data++;
+		    }
+		  ADVANCE
+		}
+
+	      /* Don't write a useless null modification byte */
+	      if (dst == mod + 1)
+		{
+		  --dst;
+		}
+
+	      if (! oasys_write_record (abfd,
+					oasys_record_is_data_enum,
+					((oasys_record_union_type *)
+					 & processed_data),
+					dst - (bfd_byte *) & processed_data))
+		return false;
+	    }
+	}
+    }
+
+  return true;
+}
+
+static boolean
+oasys_write_object_contents (abfd)
+     bfd *abfd;
+{
+  if (! oasys_write_header (abfd))
+    return false;
+  if (! oasys_write_syms (abfd))
+    return false;
+  if (! oasys_write_sections (abfd))
+    return false;
+  if (! oasys_write_data (abfd))
+    return false;
+  if (! oasys_write_end (abfd))
+    return false;
+  return true;
+}
+
+
+
+
+/** exec and core file sections */
+
+/* set section contents is complicated with OASYS since the format is
+* not a byte image, but a record stream.
+*/
+static boolean
+oasys_set_section_contents (abfd, section, location, offset, count)
+     bfd *abfd;
+     sec_ptr section;
+     PTR location;
+     file_ptr offset;
+     bfd_size_type count;
+{
+  if (count != 0)
+    {
+      if (oasys_per_section (section)->data == (bfd_byte *) NULL)
+	{
+	  oasys_per_section (section)->data =
+	    (bfd_byte *) (bfd_alloc (abfd, section->_cooked_size));
+	  if (!oasys_per_section (section)->data)
+	    return false;
+	}
+      (void) memcpy ((PTR) (oasys_per_section (section)->data + offset),
+		     location,
+		     (size_t) count);
+    }
+  return true;
+}
+
+
+
+/* Native-level interface to symbols. */
+
+/* We read the symbols into a buffer, which is discarded when this
+function exits.  We read the strings into a buffer large enough to
+hold them all plus all the cached symbol entries. */
+
+static asymbol *
+oasys_make_empty_symbol (abfd)
+     bfd *abfd;
+{
+
+  oasys_symbol_type *new =
+  (oasys_symbol_type *) bfd_zalloc (abfd, sizeof (oasys_symbol_type));
+  if (!new)
+    return NULL;
+  new->symbol.the_bfd = abfd;
+  return &new->symbol;
+}
+
+
+
+
+/* User should have checked the file flags; perhaps we should return
+BFD_NO_MORE_SYMBOLS if there are none? */
+
+static bfd *
+oasys_openr_next_archived_file (arch, prev)
+     bfd *arch;
+     bfd *prev;
+{
+  oasys_ar_data_type *ar = OASYS_AR_DATA (arch);
+  oasys_module_info_type *p;
+  /* take the next one from the arch state, or reset */
+  if (prev == (bfd *) NULL)
+    {
+      /* Reset the index - the first two entries are bogus*/
+      ar->module_index = 0;
+    }
+
+  p = ar->module + ar->module_index;
+  ar->module_index++;
+
+  if (ar->module_index <= ar->module_count)
+    {
+      if (p->abfd == (bfd *) NULL)
+	{
+	  p->abfd = _bfd_create_empty_archive_element_shell (arch);
+	  p->abfd->origin = p->pos;
+	  p->abfd->filename = p->name;
+
+	  /* Fixup a pointer to this element for the member */
+	  p->abfd->arelt_data = (PTR) p;
+	}
+      return p->abfd;
+    }
+  else
+    {
+      bfd_set_error (bfd_error_no_more_archived_files);
+      return (bfd *) NULL;
+    }
+}
+
+static boolean
+oasys_find_nearest_line (abfd,
+			 section,
+			 symbols,
+			 offset,
+			 filename_ptr,
+			 functionname_ptr,
+			 line_ptr)
+     bfd *abfd;
+     asection *section;
+     asymbol **symbols;
+     bfd_vma offset;
+     char **filename_ptr;
+     char **functionname_ptr;
+     unsigned int *line_ptr;
+{
+  return false;
+
+}
+
+static int
+oasys_generic_stat_arch_elt (abfd, buf)
+     bfd *abfd;
+     struct stat *buf;
+{
+  oasys_module_info_type *mod = (oasys_module_info_type *) abfd->arelt_data;
+  if (mod == (oasys_module_info_type *) NULL)
+    {
+      bfd_set_error (bfd_error_invalid_operation);
+      return -1;
+    }
+  else
+    {
+      buf->st_size = mod->size;
+      buf->st_mode = 0666;
+      return 0;
+    }
+}
+
+static int
+oasys_sizeof_headers (abfd, exec)
+     bfd *abfd;
+     boolean exec;
+{
+  return 0;
+}
+
+#define	oasys_close_and_cleanup _bfd_generic_close_and_cleanup
+#define oasys_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
+
+#define oasys_slurp_armap bfd_true
+#define oasys_slurp_extended_name_table bfd_true
+#define oasys_construct_extended_name_table \
+  ((boolean (*) PARAMS ((bfd *, char **, bfd_size_type *, const char **))) \
+   bfd_true)
+#define oasys_truncate_arname bfd_dont_truncate_arname
+#define oasys_write_armap \
+  ((boolean (*) \
+    PARAMS ((bfd *, unsigned int, struct orl *, unsigned int, int))) \
+   bfd_true)
+#define oasys_read_ar_hdr bfd_nullvoidptr
+#define oasys_get_elt_at_index _bfd_generic_get_elt_at_index
+#define oasys_update_armap_timestamp bfd_true
+
+#define oasys_bfd_is_local_label_name bfd_generic_is_local_label_name
+#define oasys_get_lineno _bfd_nosymbols_get_lineno
+#define oasys_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
+#define oasys_read_minisymbols _bfd_generic_read_minisymbols
+#define oasys_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
+
+#define oasys_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
+
+#define oasys_set_arch_mach bfd_default_set_arch_mach
+
+#define oasys_get_section_contents_in_window \
+  _bfd_generic_get_section_contents_in_window
+
+#define oasys_bfd_get_relocated_section_contents \
+  bfd_generic_get_relocated_section_contents
+#define oasys_bfd_relax_section bfd_generic_relax_section
+#define oasys_bfd_gc_sections bfd_generic_gc_sections
+#define oasys_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
+#define oasys_bfd_link_add_symbols _bfd_generic_link_add_symbols
+#define oasys_bfd_final_link _bfd_generic_final_link
+#define oasys_bfd_link_split_section _bfd_generic_link_split_section
+
+/*SUPPRESS 460 */
+const bfd_target oasys_vec =
+{
+  "oasys",			/* name */
+  bfd_target_oasys_flavour,
+  BFD_ENDIAN_BIG,		/* target byte order */
+  BFD_ENDIAN_BIG,		/* target headers byte order */
+  (HAS_RELOC | EXEC_P |		/* object flags */
+   HAS_LINENO | HAS_DEBUG |
+   HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
+  (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
+   | SEC_ALLOC | SEC_LOAD | SEC_RELOC),	/* section flags */
+  0,				/* leading underscore */
+  ' ',				/* ar_pad_char */
+  16,				/* ar_max_namelen */
+  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
+  bfd_getb32, bfd_getb_signed_32, bfd_putb32,
+  bfd_getb16, bfd_getb_signed_16, bfd_putb16,	/* data */
+  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
+  bfd_getb32, bfd_getb_signed_32, bfd_putb32,
+  bfd_getb16, bfd_getb_signed_16, bfd_putb16,	/* hdrs */
+
+  {_bfd_dummy_target,
+   oasys_object_p,		/* bfd_check_format */
+   oasys_archive_p,
+   _bfd_dummy_target,
+  },
+  {				/* bfd_set_format */
+    bfd_false,
+    oasys_mkobject,
+    _bfd_generic_mkarchive,
+    bfd_false
+  },
+  {				/* bfd_write_contents */
+    bfd_false,
+    oasys_write_object_contents,
+    _bfd_write_archive_contents,
+    bfd_false,
+  },
+
+  BFD_JUMP_TABLE_GENERIC (oasys),
+  BFD_JUMP_TABLE_COPY (_bfd_generic),
+  BFD_JUMP_TABLE_CORE (_bfd_nocore),
+  BFD_JUMP_TABLE_ARCHIVE (oasys),
+  BFD_JUMP_TABLE_SYMBOLS (oasys),
+  BFD_JUMP_TABLE_RELOCS (oasys),
+  BFD_JUMP_TABLE_WRITE (oasys),
+  BFD_JUMP_TABLE_LINK (oasys),
+  BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+
+  (PTR) 0
+};