* syms.c (BSF_DYNAMIC): New symbol flag.

	(bfd_print_symbol_vandf): Print it.
	* bfd-in2.h: Rebuilt.
	* libaout.h (struct aout_backend_data): New read_dynamic_symbols
	and read_dynamic_relocs fields.
	(struct aoutdata): New dynamic_info field.
	(obj_aout_dynamic_info): New accessor macro.
	* sunos.c (struct sunos_dynamic_info): New structure.
	(sunos_read_dynamic_info, MY(read_dynamic_symbols),
	MY(read_dynamic_relocs)): New functions to read dynamic symbols
	and relocs.
	* aoutx.h (NAME(aout,some_aout_object_p)): If the object is
	dynamically linked, set SEC_RELOC for both the .text and .data
	sections.
	(translate_from_native_sym_flags): Don't set BSF_LOCAL for an
	undefined symbol.
	(translate_symbol_table): New function, split out of
	slurp_symbol_table; set the BSF_DYNAMIC flag appropriately.
	(NAME(aout,slurp_symbol_table)): Read dynamic symbols, if any.
	(NAME(aout,slurp_reloc_table)): Read dynamic relocs, if any.
	(NAME(aout,get_reloc_upper_bound)): Include dynamic reloc count in
	return value.
	* aoutf1.h (NAME(aout,sunos4_write_object_contents)): Don't write
	out dynamic symbols or relocs against reloc symbols, since they
	are already in the .text section and we wouldn't know where to
	write them anyhow.
	(sunos4_aout_backend): Initialize read_dynamic_symbols and
	read_dynamic_relocs fields.
	* aout-target.h (MY(backend_data)): Initialize
	read_dynamic_symbols and read_dynamic_relocs fields.

1 files changed, 242 insertions, 574 deletions

diff --git a/bfd/sunos.c b/bfd/sunos.c
index a451a48..7f62a33 100644
--- a/bfd/sunos.c
+++ b/bfd/sunos.c
@@ -1,627 +1,295 @@
-/* BFD backend for sunos binaries */
+/* BFD backend for SunOS binaries.
+   Copyright (C) 1990-1991 Free Software Foundation, Inc.
+   Written by Cygnus Support.
 
-/* Copyright (C) 1990, 1991 Free Software Foundation, Inc.
+This file is part of BFD, the Binary File Descriptor library.
 
-This file is part of BFD, the Binary File Diddler.
-
-BFD is free software; you can redistribute it and/or modify
+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 1, or (at your option)
-any later version.
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
 
-BFD is distributed in the hope that it will be useful,
+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 BFD; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 
-/* $Id$ */
+#define ARCH 32
+#define TARGETNAME "a.out-sunos-big"
+#define MY(OP) CAT(sunos_big_,OP)
 
-#include <ansidecl.h>
-#include "sysdep.h"
 #include "bfd.h"
-#include "libbfd.h"
-
-#include "a.out.sun4.h"
-#include "a.out.gnu.h"
-#include "stab.gnu.h"
-#include "ar.h"
-#include "liba.out.h"           /* BFD a.out internal data structures */
-
-void (*bfd_error_trap)();
-
-static bfd_target *sunos4_callback ();
 
-/*SUPPRESS558*/
-/*SUPPRESS529*/
+/* Static routines defined in this file.  */
 
-bfd_target *
-sunos4_object_p (abfd)
-     bfd *abfd;
-{
-  unsigned char magicbuf[4];	/* Raw bytes of magic number from file */
-  unsigned long magic;		/* Swapped magic number */
+struct external_nlist;
 
-  bfd_error = system_call_error;
+static boolean sunos_read_dynamic_info PARAMS ((bfd *));
+static bfd_size_type MY(read_dynamic_symbols)
+     PARAMS ((bfd *, struct external_nlist **, char **, bfd_size_type *));
+static bfd_size_type MY(read_dynamic_relocs) PARAMS ((bfd *, PTR *));
 
-  if (bfd_read ((PTR)magicbuf, 1, sizeof (magicbuf), abfd) !=
-      sizeof (magicbuf))
-    return 0;
-  magic = bfd_h_getlong (abfd, magicbuf);
+#define MY_read_dynamic_symbols MY(read_dynamic_symbols)
+#define MY_read_dynamic_relocs MY(read_dynamic_relocs)
 
-  if (N_BADMAG (*((struct exec *) &magic))) return 0;
+/* Include the usual a.out support.  */
+#include "aoutf1.h"
 
-  return some_aout_object_p (abfd, sunos4_callback);
-}
+/* SunOS shared library support.  We store a pointer to this structure
+   in obj_aout_dynamic_info (abfd).  */
 
-  /* Determine the size of a relocation entry, based on the architecture */
-static void
-DEFUN(choose_reloc_size,(abfd),
-bfd *abfd)
-  {
-    switch (abfd->obj_arch) {
-    case bfd_arch_sparc:
-    case bfd_arch_a29k:
-      obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
-      break;
-    default:
-      obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
-      break;
-    }
-  }
-
-/* Set parameters about this a.out file that are machine-dependent.
-   This routine is called from some_aout_object_p just before it returns.  */
-
-static bfd_target *
-sunos4_callback (abfd)
-     bfd *abfd;
+struct sunos_dynamic_info
 {
-  struct exec *execp = exec_hdr (abfd);
-
-  /* The virtual memory addresses of the sections */
-  obj_datasec (abfd)->vma = N_DATADDR(*execp);
-  obj_bsssec (abfd)->vma = N_BSSADDR(*execp);
-  obj_textsec (abfd)->vma = N_TXTADDR(*execp);
-
-  /* The file offsets of the sections */
-  obj_textsec (abfd)->filepos = EXEC_BYTES_SIZE; /*N_TXTOFF(*execp);*/
-  obj_datasec (abfd)->filepos = N_DATOFF(*execp);
-
-  /* The file offsets of the relocation info */
-  obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp);
-  obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp);
-
-  /* The file offsets of the string table and symbol table.  */
-  obj_str_filepos (abfd) = N_STROFF (*execp);
-  obj_sym_filepos (abfd) = N_SYMOFF (*execp);
-
-
-
-  /* Determine the architecture and machine type of the object file.  */
-  switch (N_MACHTYPE (*exec_hdr (abfd))) {
-
-  case M_UNKNOWN:
-	abfd->obj_arch = bfd_arch_unknown;
-	abfd->obj_machine = 0;
-	break;
-
-  case M_68010:
-	abfd->obj_arch = bfd_arch_m68k;
-	abfd->obj_machine = 68010;
-	break;
-
-  case M_68020:
-	abfd->obj_arch = bfd_arch_m68k;
-	abfd->obj_machine = 68020;
-	break;
-
-  case M_SPARC:
-	abfd->obj_arch = bfd_arch_sparc;
-	abfd->obj_machine = 0;
-	break;
-
-  case M_386:
-	abfd->obj_arch = bfd_arch_i386;
-	abfd->obj_machine = 0;
-	break;
-
-  case M_29K:
-	abfd->obj_arch = bfd_arch_a29k;
-	abfd->obj_machine = 0;
-	break;
-
-  default:
-	abfd->obj_arch = bfd_arch_obscure;
-	abfd->obj_machine = 0;
-	break;
-  }
-
-  choose_reloc_size(abfd);
-  return abfd->xvec;
-}
+  /* Whether we found any dynamic information.  */
+  boolean valid;
+  /* Dynamic information.  */
+  struct internal_sun4_dynamic_link dyninfo;
+  /* Number of dynamic symbols.  */
+  bfd_size_type dynsym_count;
+  /* Read in nlists for dynamic symbols.  */
+  struct external_nlist *dynsym;
+  /* Read in dynamic string table.  */
+  char *dynstr;
+  /* Number of dynamic relocs.  */
+  bfd_size_type dynrel_count;
+  /* Read in dynamic relocs.  This may be reloc_std_external or
+     reloc_ext_external.  */
+  PTR dynrel;
+};
 
+/* Read in the basic dynamic information.  This locates the __DYNAMIC
+   structure and uses it to find the dynamic_link structure.  It
+   creates and saves a sunos_dynamic_info structure.  If it can't find
+   __DYNAMIC, it sets the valid field of the sunos_dynamic_info
+   structure to false to avoid doing this work again.  */
 
-boolean
-sunos4_mkobject (abfd)
+static boolean
+sunos_read_dynamic_info (abfd)
      bfd *abfd;
 {
-  char *rawptr;
-
-  bfd_error = system_call_error;
-
-  /* Use an intermediate variable for clarity */
-  rawptr = bfd_zalloc (abfd, sizeof (struct aoutdata) + sizeof (struct exec));
-
-  if (rawptr == NULL) {
-    bfd_error = no_memory;
-    return false;
-  }
-
-  set_tdata (abfd, (struct aoutdata *) rawptr);
-  exec_hdr (abfd) = (struct exec *) (rawptr + sizeof (struct aoutdata));
-
-  /* For simplicity's sake we just make all the sections right here. */
-
-  obj_textsec (abfd) = (asection *)NULL;
-  obj_datasec (abfd) = (asection *)NULL;
-  obj_bsssec (abfd) = (asection *)NULL;
-  bfd_make_section (abfd, ".text");
-  bfd_make_section (abfd, ".data");
-  bfd_make_section (abfd, ".bss");
+  struct sunos_dynamic_info *info;
+  struct external_nlist dynsym;
+  char buf[sizeof "__DYNAMIC"];
+  asection *dynsec;
+  file_ptr dynoff;
+  struct external_sun4_dynamic dyninfo;
+  unsigned long dynver;
+  struct external_sun4_dynamic_link linkinfo;
+
+  if (obj_aout_dynamic_info (abfd) != (PTR) NULL)
+    return true;
+
+  info = ((struct sunos_dynamic_info *)
+	  bfd_zalloc (abfd, sizeof (struct sunos_dynamic_info)));
+  info->valid = false;
+  info->dynsym = NULL;
+  info->dynstr = NULL;
+  info->dynrel = NULL;
+  obj_aout_dynamic_info (abfd) = (PTR) info;
+
+  /* We look for the __DYNAMIC symbol to locate the dynamic linking
+     information.  It should be the first symbol if it is defined.  If
+     we can't find it, don't sweat it.  */
+  if ((abfd->flags & DYNAMIC) == 0
+      || bfd_get_symcount (abfd) <= 0
+      || bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
+      || (bfd_read ((PTR) &dynsym, 1, EXTERNAL_NLIST_SIZE, abfd)
+	  != EXTERNAL_NLIST_SIZE)
+      || ((dynsym.e_type[0] & N_TYPE) != N_DATA
+	  && (dynsym.e_type[0] & N_TYPE) != N_TEXT)
+      || bfd_seek (abfd,
+		   obj_str_filepos (abfd) + GET_WORD (abfd, dynsym.e_strx),
+		   SEEK_SET) != 0
+      || bfd_read ((PTR) buf, 1, sizeof buf, abfd) != sizeof buf
+      || buf[sizeof buf - 1] != '\0'
+      || strcmp (buf, "__DYNAMIC") != 0)
+    return true;
+
+  if ((dynsym.e_type[0] & N_TYPE) == N_DATA)
+    dynsec = obj_datasec (abfd);
+  else
+    dynsec = obj_textsec (abfd);
+  if (! bfd_get_section_contents (abfd, dynsec, (PTR) &dyninfo,
+				  (GET_WORD (abfd, dynsym.e_value)
+				   - bfd_get_section_vma (abfd, dynsec)),
+				  sizeof dyninfo))
+    return true;
+
+  dynver = GET_WORD (abfd, dyninfo.ld_version);
+  if (dynver != 2 && dynver != 3)
+    return true;
+
+  dynoff = GET_WORD (abfd, dyninfo.ld);
+
+  /* dynoff is a virtual address.  It is probably always in the .data
+     section, but this code should work even if it moves.  */
+  if (dynoff < bfd_get_section_vma (abfd, obj_datasec (abfd)))
+    dynsec = obj_textsec (abfd);
+  else
+    dynsec = obj_datasec (abfd);
+  dynoff -= bfd_get_section_vma (abfd, dynsec);
+  if (dynoff < 0 || dynoff > bfd_section_size (abfd, dynsec))
+    return true;
+
+  /* This executable appears to be dynamically linked in a way that we
+     can understand.  */
+  if (! bfd_get_section_contents (abfd, dynsec, (PTR) &linkinfo, dynoff,
+				  (bfd_size_type) sizeof linkinfo))
+    return true;
+
+  /* Swap in the dynamic link information.  */
+  info->dyninfo.ld_loaded = GET_WORD (abfd, linkinfo.ld_loaded);
+  info->dyninfo.ld_need = GET_WORD (abfd, linkinfo.ld_need);
+  info->dyninfo.ld_rules = GET_WORD (abfd, linkinfo.ld_rules);
+  info->dyninfo.ld_got = GET_WORD (abfd, linkinfo.ld_got);
+  info->dyninfo.ld_plt = GET_WORD (abfd, linkinfo.ld_plt);
+  info->dyninfo.ld_rel = GET_WORD (abfd, linkinfo.ld_rel);
+  info->dyninfo.ld_hash = GET_WORD (abfd, linkinfo.ld_hash);
+  info->dyninfo.ld_stab = GET_WORD (abfd, linkinfo.ld_stab);
+  info->dyninfo.ld_stab_hash = GET_WORD (abfd, linkinfo.ld_stab_hash);
+  info->dyninfo.ld_buckets = GET_WORD (abfd, linkinfo.ld_buckets);
+  info->dyninfo.ld_symbols = GET_WORD (abfd, linkinfo.ld_symbols);
+  info->dyninfo.ld_symb_size = GET_WORD (abfd, linkinfo.ld_symb_size);
+  info->dyninfo.ld_text = GET_WORD (abfd, linkinfo.ld_text);
+  info->dyninfo.ld_plt_sz = GET_WORD (abfd, linkinfo.ld_plt_sz);
+
+  /* The only way to get the size of the symbol information appears to
+     be to determine the distance between it and the string table.  */
+  info->dynsym_count = ((info->dyninfo.ld_symbols - info->dyninfo.ld_stab)
+			/ EXTERNAL_NLIST_SIZE);
+  BFD_ASSERT (info->dynsym_count * EXTERNAL_NLIST_SIZE
+	      == info->dyninfo.ld_symbols - info->dyninfo.ld_stab);
+
+  /* Similarly, the relocs end at the hash table.  */
+  info->dynrel_count = ((info->dyninfo.ld_hash - info->dyninfo.ld_rel)
+			/ obj_reloc_entry_size (abfd));
+  BFD_ASSERT (info->dynrel_count * obj_reloc_entry_size (abfd)
+	      == info->dyninfo.ld_hash - info->dyninfo.ld_rel);
+
+  info->valid = true;
 
   return true;
 }
 
-/* Keep track of machine architecture and machine type for a.out's.
-   Return the machine_type for a particular arch&machine, or M_UNKNOWN
-   if that exact arch&machine can't be represented in a.out format.
-
-   If the architecture is understood, machine type 0 (default) should
-   always be understood.  */
-
-static enum machine_type
-aout_machine_type (arch, machine)
-     enum bfd_architecture arch;
-     unsigned long machine;
-{
-  enum machine_type arch_flags;
-
-  arch_flags = M_UNKNOWN;
-
-  switch (arch) {
-  case bfd_arch_sparc:
-    if (machine == 0)	arch_flags = M_SPARC;
-    break;
-
-  case bfd_arch_m68k:
-    switch (machine) {
-    case 0:		arch_flags = M_68010; break;
-    case 68000:		arch_flags = M_UNKNOWN;	break;
-    case 68010:		arch_flags = M_68010; break;
-    case 68020:		arch_flags = M_68020; break;
-    default:		arch_flags = M_UNKNOWN; break;
-    }
-    break;
-
-  case bfd_arch_i386:
-    if (machine == 0)	arch_flags = M_386;
-    break;
-
-  case bfd_arch_a29k:
-    if (machine == 0)	arch_flags = M_29K;
-    break;
-
-  default:
-    arch_flags = M_UNKNOWN;
-    break;
-  }
-  return arch_flags;
-}
-
-/* Write an object file in SunOS format.
-   Section contents have already been written.  We write the
-   file header, symbols, and relocation.  */
+/* Read in the dynamic symbols.  */
 
-boolean
-sunos4_write_object_contents (abfd)
+static bfd_size_type
+MY(read_dynamic_symbols) (abfd, syms, strs, strsize)
      bfd *abfd;
+     struct external_nlist **syms;
+     char **strs;
+     bfd_size_type *strsize;
 {
-  size_t data_pad = 0;
-  unsigned char exec_bytes[EXEC_BYTES_SIZE];
-  struct exec *execp = exec_hdr (abfd);
+  struct sunos_dynamic_info *info;
 
-
-
-  execp->a_text = obj_textsec (abfd)->size;
-
-  /* Magic number, maestro, please!  */
-  switch (bfd_get_architecture(abfd)) {
-  case bfd_arch_m68k:
-    switch (bfd_get_machine(abfd)) {
-    case 68010:
-      N_SET_MACHTYPE(*execp, M_68010);
-      break;
-    default:
-    case 68020:
-      N_SET_MACHTYPE(*execp, M_68020);
-      break;
+  if (obj_aout_dynamic_info (abfd) == (PTR) NULL)
+    {
+      if (! sunos_read_dynamic_info (abfd))
+	  return (bfd_size_type) -1;
     }
-    break;
-  case bfd_arch_sparc:
-    N_SET_MACHTYPE(*execp, M_SPARC);
-    break;
-  case bfd_arch_i386:
-    N_SET_MACHTYPE(*execp, M_386);
-    break;
-  case bfd_arch_a29k:
-    N_SET_MACHTYPE(*execp, M_29K);
-    break;
-  default:
-    N_SET_MACHTYPE(*execp, M_UNKNOWN);
-  }
 
-  choose_reloc_size(abfd);
+  info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
+  if (! info->valid || info->dynsym_count == 0)
+    return 0;
 
-  N_SET_MAGIC (*execp, OMAGIC);
-  if (abfd->flags & D_PAGED) {
-    /* This is not strictly true, but will probably do for the default
-	case.  FIXME.  
-	*/
+  if (info->dynsym == (struct external_nlist *) NULL)
+    {
+      info->dynsym = ((struct external_nlist *)
+		      bfd_alloc (abfd,
+				 (info->dynsym_count
+				  * EXTERNAL_NLIST_SIZE)));
+      info->dynstr = (char *) bfd_alloc (abfd, info->dyninfo.ld_symb_size);
+      if (bfd_seek (abfd, info->dyninfo.ld_stab, SEEK_SET) != 0
+	  || (bfd_read ((PTR) info->dynsym, info->dynsym_count,
+			EXTERNAL_NLIST_SIZE, abfd)
+	      != info->dynsym_count * EXTERNAL_NLIST_SIZE)
+	  || bfd_seek (abfd, info->dyninfo.ld_symbols, SEEK_SET) != 0
+	  || (bfd_read ((PTR) info->dynstr, 1, info->dyninfo.ld_symb_size,
+			abfd)
+	      != info->dyninfo.ld_symb_size))
+	return (bfd_size_type) -1;
+    }
 
-    execp->a_text = obj_textsec (abfd)->size + EXEC_BYTES_SIZE;
-    N_SET_MAGIC (*execp, ZMAGIC);
-  } else if (abfd->flags & WP_TEXT) {
-    N_SET_MAGIC (*execp, NMAGIC);
-  }
-  N_SET_FLAGS (*execp, 0x1);	/* copied from ld.c; who the hell knows? */
+  *syms = info->dynsym;
+  *strs = info->dynstr;
+  *strsize = info->dyninfo.ld_symb_size;
 
-  if (abfd->flags & D_PAGED) 
+#ifdef CHECK_DYNAMIC_HASH
+  /* Check my understanding of the dynamic hash table by making sure
+     that each symbol can be located in the hash table.  */
+  {
+    bfd_size_type table_size;
+    bfd_byte *table;
+    bfd_size_type i;
+
+    if (info->dyninfo.ld_buckets > info->dynsym_count)
+      abort ();
+    table_size = info->dyninfo.ld_stab - info->dyninfo.ld_hash;
+    table = (bfd_byte *) alloca (table_size);
+    if (bfd_seek (abfd, info->dyninfo.ld_hash, SEEK_SET) != 0
+	|| bfd_read ((PTR) table, 1, table_size, abfd) != table_size)
+      abort ();
+    for (i = 0; i < info->dynsym_count; i++)
       {
-	data_pad = ((obj_datasec(abfd)->size + PAGE_SIZE -1)
-		    & (- PAGE_SIZE)) - obj_datasec(abfd)->size;
-
-	if (data_pad > obj_bsssec(abfd)->size)
-	  execp->a_bss = 0;
-	else 
-	  execp->a_bss = obj_bsssec(abfd)->size - data_pad;
-	execp->a_data = obj_datasec(abfd)->size + data_pad;
-
+	unsigned char *name;
+	unsigned long hash;
+
+	name = ((unsigned char *) info->dynstr
+		+ GET_WORD (abfd, info->dynsym[i].e_strx));
+	hash = 0;
+	while (*name != '\0')
+	  hash = (hash << 1) + *name++;
+	hash &= 0x7fffffff;
+	hash %= info->dyninfo.ld_buckets;
+	while (GET_WORD (abfd, table + 8 * hash) != i)
+	  {
+	    hash = GET_WORD (abfd, table + 8 * hash + 4);
+	    if (hash == 0 || hash >= table_size / 8)
+	      abort ();
+	  }
       }
-  else {
-    execp->a_data = obj_datasec (abfd)->size;
-    execp->a_bss = obj_bsssec (abfd)->size;
   }
+#endif /* CHECK_DYNAMIC_HASH */
 
-  execp->a_syms = bfd_get_symcount (abfd) * sizeof (struct nlist);
-  execp->a_entry = bfd_get_start_address (abfd);
-
-
-
-
-  execp->a_trsize = ((obj_textsec (abfd)->reloc_count) *
-		     obj_reloc_entry_size (abfd));
-		       
-  execp->a_drsize = ((obj_datasec (abfd)->reloc_count) *
-		     obj_reloc_entry_size (abfd));
-
-  bfd_aout_swap_exec_header_out (abfd, execp, exec_bytes);
-
-  bfd_seek (abfd, 0L, false);
-  bfd_write ((PTR) exec_bytes, 1, EXEC_BYTES_SIZE, abfd);
-
-  /* Now write out reloc info, followed by syms and strings */
-
-  if (bfd_get_symcount (abfd) != 0) 
-    {
-      bfd_seek (abfd,
-		(long)(N_SYMOFF(*execp)), false);
-
-      aout_write_syms (abfd);
-
-      bfd_seek (abfd,	(long)(N_TRELOFF(*execp)), false);
-
-      if (!aout_squirt_out_relocs (abfd, obj_textsec (abfd))) return false;
-      bfd_seek (abfd, (long)(N_DRELOFF(*execp)), false);
-
-      if (!aout_squirt_out_relocs (abfd, obj_datasec (abfd))) return false;
-    }
-  return true;
+  return info->dynsym_count;
 }
-
-/* core files */
-
-#define CORE_MAGIC 0x080456
-#define CORE_NAMELEN 16
-
-/* The core structure is taken from the Sun documentation.
-   Unfortunately, they don't document the FPA structure, or at least I
-   can't find it easily.  Fortunately the core header contains its own
-   length.  So this shouldn't cause problems, except for c_ucode, which
-   so far we don't use but is easy to find with a little arithmetic. */
-
-/* But the reg structure can be gotten from the SPARC processor handbook.
-   This really should be in a GNU include file though so that gdb can use
-   the same info. */
-struct regs {
-  int r_psr;
-  int r_pc;
-  int r_npc;
-  int r_y;
-  int r_g1;
-  int r_g2;
-  int r_g3;
-  int r_g4;
-  int r_g5;
-  int r_g6;
-  int r_g7;
-  int r_o0;
-  int r_o1;
-  int r_o2;
-  int r_o3;
-  int r_o4;
-  int r_o5;
-  int r_o6;
-  int r_o7;
-};
-
-/* Taken from Sun documentation: */
-
-/* FIXME:  It's worse than we expect.  This struct contains TWO substructs
-   neither of whose size we know, WITH STUFF IN BETWEEN THEM!  We can't
-   even portably access the stuff in between!  */
-
-struct core {
-  int c_magic;			/* Corefile magic number */
-  int c_len;			/* Sizeof (struct core) */
-  struct regs c_regs;		/* General purpose registers -- MACHDEP SIZE */
-  struct exec c_aouthdr;	/* A.out header */
-  int c_signo;			/* Killing signal, if any */
-  int c_tsize;			/* Text size (bytes) */
-  int c_dsize;			/* Data size (bytes) */
-  int c_ssize;			/* Stack size (bytes) */
-  char c_cmdname[CORE_NAMELEN + 1]; /* Command name */
-  double fp_stuff[1];		/* external FPU state (size unknown by us) */
-		/* The type "double" is critical here, for alignment.
-		   SunOS declares a struct here, but the struct's alignment
-		   is double since it contains doubles.  */
-  int c_ucode;			/* Exception no. from u_code */
-		/* (this member is not accessible by name since we don't
-		    portably know the size of fp_stuff.) */
-};
 
-/* Supposedly the user stack grows downward from the bottom of kernel memory.
-   Presuming that this remains true, this definition will work. */
-#define USRSTACK (-(128*1024*1024))
-
-PROTO (static void, swapcore, (bfd *abfd, struct core *core));
-
-/* need this cast b/c ptr is really void * */
-#define core_hdr(bfd) (((struct suncordata *) (bfd->tdata))->hdr)
-#define core_datasec(bfd) (((struct suncordata *) ((bfd)->tdata))->data_section)
-#define core_stacksec(bfd) (((struct suncordata*)((bfd)->tdata))->stack_section)
-#define core_regsec(bfd) (((struct suncordata *) ((bfd)->tdata))->reg_section)
-#define core_reg2sec(bfd) (((struct suncordata *) ((bfd)->tdata))->reg2_section)
-
-/* These are stored in the bfd's tdata */
-struct suncordata {
-  struct core *hdr;             /* core file header */
-  asection *data_section;
-  asection *stack_section;
-  asection *reg_section;
-  asection *reg2_section;
-};
+/* Read in the dynamic relocs for a section.  */
 
-bfd_target *
-sunos4_core_file_p (abfd)
+static bfd_size_type
+MY(read_dynamic_relocs) (abfd, relocs)
      bfd *abfd;
+     PTR *relocs;
 {
-  unsigned char longbuf[4];	/* Raw bytes of various header fields */
-  int core_size;
-  int core_mag;
-  struct core *core;
-  char *rawptr;
-
-  bfd_error = system_call_error;
-
-  if (bfd_read ((PTR)longbuf, 1, sizeof (longbuf), abfd) !=
-	 sizeof (longbuf))
-    return 0;
-  core_mag = bfd_h_getlong (abfd, longbuf);
+  struct sunos_dynamic_info *info;
 
-  if (core_mag != CORE_MAGIC) return 0;
-
-  /* SunOS core headers can vary in length; second word is size; */
-  if (bfd_read ((PTR)longbuf, 1, sizeof (longbuf), abfd) !=
-	 sizeof (longbuf))
-    return 0;
-  core_size = bfd_h_getlong (abfd, longbuf);
-  /* Sanity check */
-  if (core_size > 20000)
-    return 0;
-
-  if (bfd_seek (abfd, 0L, false) < 0) return 0;
-
-  rawptr = bfd_zalloc (abfd, core_size + sizeof (struct suncordata));
-  if (rawptr == NULL) {
-    bfd_error = no_memory;
-    return 0;
-  }
-
-  core = (struct core *) (rawptr + sizeof (struct suncordata));
+  if (obj_aout_dynamic_info (abfd) == (PTR) NULL)
+    {
+      if (! sunos_read_dynamic_info (abfd))
+	  return (bfd_size_type) -1;
+    }
 
-  if ((bfd_read ((PTR) core, 1, core_size, abfd)) != core_size) {
-    bfd_error = system_call_error;
-    bfd_release (abfd, rawptr);
+  info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
+  if (! info->valid || info->dynrel_count == 0)
     return 0;
-  }
 
-  swapcore (abfd, core);
-  set_tdata (abfd, ((struct suncordata *) rawptr));
-  core_hdr (abfd) = core;
-
-  /* create the sections.  This is raunchy, but bfd_close wants to reclaim
-     them */
-  core_stacksec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
-  if (core_stacksec (abfd) == NULL) {
-loser:
-    bfd_error = no_memory;
-    bfd_release (abfd, rawptr);
-    return 0;
-  }
-  core_datasec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
-  if (core_datasec (abfd) == NULL) {
-loser1:
-    bfd_release (abfd, core_stacksec (abfd));
-    goto loser;
-  }
-  core_regsec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
-  if (core_regsec (abfd) == NULL) {
-loser2:
-    bfd_release (abfd, core_datasec (abfd));
-    goto loser1;
-  }
-  core_reg2sec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
-  if (core_reg2sec (abfd) == NULL) {
-    bfd_release (abfd, core_regsec (abfd));
-    goto loser2;
-  }
-
-  core_stacksec (abfd)->name = ".stack";
-  core_datasec (abfd)->name = ".data";
-  core_regsec (abfd)->name = ".reg";
-  core_reg2sec (abfd)->name = ".reg2";
-
-  core_stacksec (abfd)->flags = SEC_ALLOC + SEC_LOAD;
-  core_datasec (abfd)->flags = SEC_ALLOC + SEC_LOAD;
-  core_regsec (abfd)->flags = SEC_ALLOC;
-  core_reg2sec (abfd)->flags = SEC_ALLOC;
-
-  core_stacksec (abfd)->size = core->c_ssize;
-  core_datasec (abfd)->size = core->c_dsize;
-  core_regsec (abfd)->size = (sizeof core->c_regs);
-  /* Float regs take up end of struct, except c_ucode.  */
-  core_reg2sec (abfd)->size = core_size - (sizeof core->c_ucode) -
-			      (file_ptr)(((struct core *)0)->fp_stuff);
-
-  core_stacksec (abfd)->vma = (USRSTACK - core->c_ssize);
-  core_datasec (abfd)->vma = N_DATADDR(core->c_aouthdr);
-  core_regsec (abfd)->vma = -1;
-  core_reg2sec (abfd)->vma = -1;
-
-  core_stacksec (abfd)->filepos = core->c_len + core->c_dsize;
-  core_datasec (abfd)->filepos = core->c_len;
-                        /* In file header: */
-  core_regsec (abfd)->filepos = (file_ptr)(&((struct core *)0)->c_regs);
-  core_reg2sec (abfd)->filepos = (file_ptr)(((struct core *)0)->fp_stuff);
-
-  /* Align to word at least */
-  core_stacksec (abfd)->alignment_power = 2;
-  core_datasec (abfd)->alignment_power = 2;
-  core_regsec (abfd)->alignment_power = 2;
-  core_reg2sec (abfd)->alignment_power = 2;
-
-  abfd->sections = core_stacksec (abfd);
-  core_stacksec (abfd)->next = core_datasec (abfd);
-  core_datasec (abfd)->next = core_regsec (abfd);
-  core_regsec (abfd)->next = core_reg2sec (abfd);
-
-  abfd->section_count = 4;
-
-  return abfd->xvec;
-}
-
-char *
-sunos4_core_file_failing_command (abfd)
-     bfd *abfd;
-{
-  return core_hdr (abfd)->c_cmdname;
-}
-
-int
-sunos4_core_file_failing_signal (abfd)
-     bfd *abfd;
-{
-  return core_hdr (abfd)->c_signo;
-}
-
-boolean
-sunos4_core_file_matches_executable_p  (core_bfd, exec_bfd)
-     bfd *core_bfd, *exec_bfd;
-{
-  if (core_bfd->xvec != exec_bfd->xvec) {
-    bfd_error = system_call_error;
-    return false;
-  }
+  if (info->dynrel == (struct external_nlist *) NULL)
+    {
+      info->dynrel = (PTR) bfd_alloc (abfd,
+				      (info->dynrel_count
+				       * obj_reloc_entry_size (abfd)));
+      if (bfd_seek (abfd, info->dyninfo.ld_rel, SEEK_SET) != 0
+	  || (bfd_read ((PTR) info->dynrel, info->dynrel_count,
+			obj_reloc_entry_size (abfd), abfd)
+	      != info->dynrel_count * obj_reloc_entry_size (abfd)))
+	return (bfd_size_type) -1;
+    }
 
-  return (bcmp ((char *)&core_hdr (core_bfd), (char*) &exec_hdr (exec_bfd),
-                sizeof (struct exec)) == 0) ? true : false;
-}
+  *relocs = info->dynrel;
 
-/* byte-swap core structure */
-/* FIXME, this needs more work to swap IN a core struct from raw bytes */
-static void
-swapcore (abfd, core)
-     bfd *abfd;
-     struct core *core;
-{
-  unsigned char exec_bytes[EXEC_BYTES_SIZE];
-
-  core->c_magic = bfd_h_getlong (abfd, (unsigned char *)&core->c_magic);
-  core->c_len   = bfd_h_getlong (abfd, (unsigned char *)&core->c_len  );
-  /* Leave integer registers in target byte order.  */
-  bcopy ((char *)&(core->c_aouthdr), (char *)exec_bytes, EXEC_BYTES_SIZE);
-  bfd_aout_swap_exec_header_in (abfd, exec_bytes, &core->c_aouthdr);
-  core->c_signo = bfd_h_getlong (abfd, (unsigned char *)&core->c_signo);
-  core->c_tsize = bfd_h_getlong (abfd, (unsigned char *)&core->c_tsize);
-  core->c_dsize = bfd_h_getlong (abfd, (unsigned char *)&core->c_dsize);
-  core->c_ssize = bfd_h_getlong (abfd, (unsigned char *)&core->c_ssize);
-  /* Leave FP registers in target byte order.  */
-  /* Leave "c_ucode" unswapped for now, since we can't find it easily.  */
+  return info->dynrel_count;
 }
-
-/* We use BFD generic archive files.  */
-#define	aout_openr_next_archived_file	bfd_generic_openr_next_archived_file
-#define	aout_generic_stat_arch_elt	bfd_generic_stat_arch_elt
-#define	aout_slurp_armap		bfd_slurp_bsd_armap
-#define	aout_slurp_extended_name_table	bfd_true
-#define	aout_write_armap		bsd_write_armap
-#define	aout_truncate_arname		bfd_bsd_truncate_arname
-
-/* We use our own core file format.  */
-#define	aout_core_file_failing_command	sunos4_core_file_failing_command
-#define	aout_core_file_failing_signal	sunos4_core_file_failing_signal
-#define	aout_core_file_matches_executable_p	\
-					sunos4_core_file_matches_executable_p
-
-/* We implement these routines ourselves, rather than using the generic
-   a.out versions.  */
-#define	aout_write_object_contents	sunos4_write_object_contents
-
-bfd_target sunos_big_vec =
-{
-  "a.out-sunos-big",		/* name */
-  bfd_target_aout_flavour_enum,
-  true,				/* target byte order */
-  true,				/* target headers byte order */
-  (HAS_RELOC | EXEC_P |		/* object flags */
-   HAS_LINENO | HAS_DEBUG |
-   HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
-  (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
-  ' ',				/* ar_pad_char */
-  16,				/* ar_max_namelen */
-  _do_getblong, _do_putblong, _do_getbshort, _do_putbshort, /* data */
-  _do_getblong, _do_putblong, _do_getbshort, _do_putbshort, /* hdrs */
-
-    {_bfd_dummy_target, sunos4_object_p,
-       bfd_generic_archive_p, sunos4_core_file_p},
-    {bfd_false, sunos4_mkobject,
-       _bfd_generic_mkarchive, bfd_false},
-    {bfd_false, sunos4_write_object_contents,	/* bfd_write_contents */
-       _bfd_write_archive_contents, bfd_false},
-
-  JUMP_TABLE(aout)
-};