19990502 sourceware importbinu_ss_19990502

1 files changed, 1418 insertions, 0 deletions

diff --git a/bfd/coff-rs6000.c b/bfd/coff-rs6000.c
new file mode 100644
index 00000000000..6b4cd4429c2
--- /dev/null
+++ b/bfd/coff-rs6000.c
@@ -0,0 +1,1418 @@
+/* BFD back-end for IBM RS/6000 "XCOFF" files.
+   Copyright 1990, 91, 92, 93, 94, 95, 96, 1997 Free Software Foundation, Inc.
+   FIXME: Can someone provide a transliteration of this name into ASCII?
+   Using the following chars caused a compiler warning on HIUX (so I replaced
+   them with octal escapes), and isn't useful without an understanding of what
+   character set it is.
+   Written by Metin G. Ozisik, Mimi Ph\373\364ng-Th\345o V\365, 
+     and John Gilmore.
+   Archive support from Damon A. Permezel.
+   Contributed by IBM Corporation and Cygnus Support.
+
+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.  */
+
+/* Internalcoff.h and coffcode.h modify themselves based on this flag.  */
+#define RS6000COFF_C 1
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+#include "coff/internal.h"
+#include "coff/rs6000.h"
+#include "libcoff.h"
+
+/* The main body of code is in coffcode.h.  */
+
+static boolean xcoff_mkobject PARAMS ((bfd *));
+static boolean xcoff_copy_private_bfd_data PARAMS ((bfd *, bfd *));
+static boolean xcoff_is_local_label_name PARAMS ((bfd *, const char *));
+static void xcoff_rtype2howto
+  PARAMS ((arelent *, struct internal_reloc *));
+static reloc_howto_type *xcoff_reloc_type_lookup
+  PARAMS ((bfd *, bfd_reloc_code_real_type));
+static boolean xcoff_slurp_armap PARAMS ((bfd *));
+static const bfd_target *xcoff_archive_p PARAMS ((bfd *));
+static PTR xcoff_read_ar_hdr PARAMS ((bfd *));
+static bfd *xcoff_openr_next_archived_file PARAMS ((bfd *, bfd *));
+static int xcoff_generic_stat_arch_elt PARAMS ((bfd *, struct stat *));
+static const char *normalize_filename PARAMS ((bfd *));
+static boolean xcoff_write_armap
+  PARAMS ((bfd *, unsigned int, struct orl *, unsigned int, int));
+static boolean xcoff_write_archive_contents PARAMS ((bfd *));
+static int _bfd_xcoff_sizeof_headers PARAMS ((bfd *, boolean));
+
+/* We use our own tdata type.  Its first field is the COFF tdata type,
+   so the COFF routines are compatible.  */
+
+static boolean
+xcoff_mkobject (abfd)
+     bfd *abfd;
+{
+  coff_data_type *coff;
+
+  abfd->tdata.xcoff_obj_data =
+    ((struct xcoff_tdata *)
+     bfd_zalloc (abfd, sizeof (struct xcoff_tdata)));
+  if (abfd->tdata.xcoff_obj_data == NULL)
+    return false;
+  coff = coff_data (abfd);
+  coff->symbols = (coff_symbol_type *) NULL;
+  coff->conversion_table = (unsigned int *) NULL;
+  coff->raw_syments = (struct coff_ptr_struct *) NULL;
+  coff->relocbase = 0;
+
+  xcoff_data (abfd)->modtype = ('1' << 8) | 'L';
+
+  /* We set cputype to -1 to indicate that it has not been
+     initialized.  */
+  xcoff_data (abfd)->cputype = -1;
+
+  xcoff_data (abfd)->csects = NULL;
+  xcoff_data (abfd)->debug_indices = NULL;
+
+  return true;
+}
+
+/* Copy XCOFF data from one BFD to another.  */
+
+static boolean
+xcoff_copy_private_bfd_data (ibfd, obfd)
+     bfd *ibfd;
+     bfd *obfd;
+{
+  struct xcoff_tdata *ix, *ox;
+  asection *sec;
+
+  if (ibfd->xvec != obfd->xvec)
+    return true;
+  ix = xcoff_data (ibfd);
+  ox = xcoff_data (obfd);
+  ox->full_aouthdr = ix->full_aouthdr;
+  ox->toc = ix->toc;
+  if (ix->sntoc == 0)
+    ox->sntoc = 0;
+  else
+    {
+      sec = coff_section_from_bfd_index (ibfd, ix->sntoc);
+      if (sec == NULL)
+	ox->sntoc = 0;
+      else
+	ox->sntoc = sec->output_section->target_index;
+    }
+  if (ix->snentry == 0)
+    ox->snentry = 0;
+  else
+    {
+      sec = coff_section_from_bfd_index (ibfd, ix->snentry);
+      if (sec == NULL)
+	ox->snentry = 0;
+      else
+	ox->snentry = sec->output_section->target_index;
+    }
+  ox->text_align_power = ix->text_align_power;
+  ox->data_align_power = ix->data_align_power;
+  ox->modtype = ix->modtype;
+  ox->cputype = ix->cputype;
+  ox->maxdata = ix->maxdata;
+  ox->maxstack = ix->maxstack;
+  return true;
+}
+
+/* I don't think XCOFF really has a notion of local labels based on
+   name.  This will mean that ld -X doesn't actually strip anything.
+   The AIX native linker does not have a -X option, and it ignores the
+   -x option.  */
+
+static boolean
+xcoff_is_local_label_name (abfd, name)
+     bfd *abfd;
+     const char *name;
+{
+  return false;
+}
+
+/* The XCOFF reloc table.  Actually, XCOFF relocations specify the
+   bitsize and whether they are signed or not, along with a
+   conventional type.  This table is for the types, which are used for
+   different algorithms for putting in the reloc.  Many of these
+   relocs need special_function entries, which I have not written.  */
+
+static reloc_howto_type xcoff_howto_table[] =
+{
+  /* Standard 32 bit relocation.  */
+  HOWTO (0,	                /* type */                                 
+	 0,	                /* rightshift */                           
+	 2,	                /* size (0 = byte, 1 = short, 2 = long) */ 
+	 32,	                /* bitsize */                   
+	 false,	                /* pc_relative */                          
+	 0,	                /* bitpos */                               
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 0,		        /* special_function */                     
+	 "R_POS",               /* name */                                 
+	 true,	                /* partial_inplace */                      
+	 0xffffffff,            /* src_mask */                             
+	 0xffffffff,            /* dst_mask */                             
+	 false),                /* pcrel_offset */
+
+  /* 32 bit relocation, but store negative value.  */
+  HOWTO (1,	                /* type */                                 
+	 0,	                /* rightshift */                           
+	 -2,	                /* size (0 = byte, 1 = short, 2 = long) */ 
+	 32,	                /* bitsize */                   
+	 false,	                /* pc_relative */                          
+	 0,	                /* bitpos */                               
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 0,		        /* special_function */                     
+	 "R_NEG",               /* name */                                 
+	 true,	                /* partial_inplace */                      
+	 0xffffffff,            /* src_mask */                             
+	 0xffffffff,            /* dst_mask */                             
+	 false),                /* pcrel_offset */
+
+  /* 32 bit PC relative relocation.  */
+  HOWTO (2,	                /* type */                                 
+	 0,	                /* rightshift */                           
+	 2,	                /* size (0 = byte, 1 = short, 2 = long) */ 
+	 32,	                /* bitsize */                   
+	 true,	                /* pc_relative */                          
+	 0,	                /* bitpos */                               
+	 complain_overflow_signed, /* complain_on_overflow */
+	 0,		        /* special_function */                     
+	 "R_REL",               /* name */                                 
+	 true,	                /* partial_inplace */                      
+	 0xffffffff,            /* src_mask */                             
+	 0xffffffff,            /* dst_mask */                             
+	 false),                /* pcrel_offset */
+  
+  /* 16 bit TOC relative relocation.  */
+  HOWTO (3,	                /* type */                                 
+	 0,	                /* rightshift */                           
+	 1,	                /* size (0 = byte, 1 = short, 2 = long) */ 
+	 16,	                /* bitsize */                   
+	 false,	                /* pc_relative */                          
+	 0,	                /* bitpos */                               
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 0,		        /* special_function */                     
+	 "R_TOC",               /* name */                                 
+	 true,	                /* partial_inplace */                      
+	 0xffff,	        /* src_mask */                             
+	 0xffff,        	/* dst_mask */                             
+	 false),                /* pcrel_offset */
+  
+  /* I don't really know what this is.  */
+  HOWTO (4,	                /* type */                                 
+	 1,	                /* rightshift */                           
+	 2,	                /* size (0 = byte, 1 = short, 2 = long) */ 
+	 32,	                /* bitsize */                   
+	 false,	                /* pc_relative */                          
+	 0,	                /* bitpos */                               
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 0,		        /* special_function */                     
+	 "R_RTB",               /* name */                                 
+	 true,	                /* partial_inplace */                      
+	 0xffffffff,	        /* src_mask */                             
+	 0xffffffff,        	/* dst_mask */                             
+	 false),                /* pcrel_offset */
+  
+  /* External TOC relative symbol.  */
+  HOWTO (5,	                /* type */                                 
+	 0,	                /* rightshift */                           
+	 2,	                /* size (0 = byte, 1 = short, 2 = long) */ 
+	 16,	                /* bitsize */                   
+	 false,	                /* pc_relative */                          
+	 0,	                /* bitpos */                               
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 0,		        /* special_function */                     
+	 "R_GL",                /* name */                                 
+	 true,	                /* partial_inplace */                      
+	 0xffff,	        /* src_mask */                             
+	 0xffff,        	/* dst_mask */                             
+	 false),                /* pcrel_offset */
+  
+  /* Local TOC relative symbol.  */
+  HOWTO (6,	                /* type */                                 
+	 0,	                /* rightshift */                           
+	 2,	                /* size (0 = byte, 1 = short, 2 = long) */ 
+	 16,	                /* bitsize */                   
+	 false,	                /* pc_relative */                          
+	 0,	                /* bitpos */                               
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 0,		        /* special_function */                     
+	 "R_TCL",               /* name */                                 
+	 true,	                /* partial_inplace */                      
+	 0xffff,	        /* src_mask */                             
+	 0xffff,        	/* dst_mask */                             
+	 false),                /* pcrel_offset */
+  
+  { 7 },
+  
+  /* Non modifiable absolute branch.  */
+  HOWTO (8,	                /* type */                                 
+	 0,	                /* rightshift */                           
+	 2,	                /* size (0 = byte, 1 = short, 2 = long) */ 
+	 26,	                /* bitsize */                   
+	 false,	                /* pc_relative */                          
+	 0,	                /* bitpos */                               
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 0,		        /* special_function */                     
+	 "R_BA",                /* name */                                 
+	 true,	                /* partial_inplace */                      
+	 0x3fffffc,	        /* src_mask */                             
+	 0x3fffffc,        	/* dst_mask */                             
+	 false),                /* pcrel_offset */
+  
+  { 9 },
+
+  /* Non modifiable relative branch.  */
+  HOWTO (0xa,	                /* type */                                 
+	 0,	                /* rightshift */                           
+	 2,	                /* size (0 = byte, 1 = short, 2 = long) */ 
+	 26,	                /* bitsize */                   
+	 true,	                /* pc_relative */                          
+	 0,	                /* bitpos */                               
+	 complain_overflow_signed, /* complain_on_overflow */
+	 0,		        /* special_function */                     
+	 "R_BR",                /* name */                                 
+	 true,	                /* partial_inplace */                      
+	 0x3fffffc,	        /* src_mask */                             
+	 0x3fffffc,        	/* dst_mask */                             
+	 false),                /* pcrel_offset */
+  
+  { 0xb },
+
+  /* Indirect load.  */
+  HOWTO (0xc,	                /* type */                                 
+	 0,	                /* rightshift */                           
+	 2,	                /* size (0 = byte, 1 = short, 2 = long) */ 
+	 16,	                /* bitsize */                   
+	 false,	                /* pc_relative */                          
+	 0,	                /* bitpos */                               
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 0,		        /* special_function */                     
+	 "R_RL",                /* name */                                 
+	 true,	                /* partial_inplace */                      
+	 0xffff,	        /* src_mask */                             
+	 0xffff,        	/* dst_mask */                             
+	 false),                /* pcrel_offset */
+  
+  /* Load address.  */
+  HOWTO (0xd,	                /* type */                                 
+	 0,	                /* rightshift */                           
+	 2,	                /* size (0 = byte, 1 = short, 2 = long) */ 
+	 16,	                /* bitsize */                   
+	 false,	                /* pc_relative */                          
+	 0,	                /* bitpos */                               
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 0,		        /* special_function */                     
+	 "R_RLA",               /* name */                                 
+	 true,	                /* partial_inplace */                      
+	 0xffff,	        /* src_mask */                             
+	 0xffff,        	/* dst_mask */                             
+	 false),                /* pcrel_offset */
+  
+  { 0xe },
+  
+  /* Non-relocating reference.  */
+  HOWTO (0xf,	                /* type */                                 
+	 0,	                /* rightshift */                           
+	 2,	                /* size (0 = byte, 1 = short, 2 = long) */ 
+	 32,	                /* bitsize */                   
+	 false,	                /* pc_relative */                          
+	 0,	                /* bitpos */                               
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 0,		        /* special_function */                     
+	 "R_REF",               /* name */                                 
+	 false,	                /* partial_inplace */                      
+	 0,		        /* src_mask */                             
+	 0,     	   	/* dst_mask */                             
+	 false),                /* pcrel_offset */
+  
+  { 0x10 },
+  { 0x11 },
+  
+  /* TOC relative indirect load.  */
+  HOWTO (0x12,	                /* type */                                 
+	 0,	                /* rightshift */                           
+	 2,	                /* size (0 = byte, 1 = short, 2 = long) */ 
+	 16,	                /* bitsize */                   
+	 false,	                /* pc_relative */                          
+	 0,	                /* bitpos */                               
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 0,		        /* special_function */                     
+	 "R_TRL",               /* name */                                 
+	 true,	                /* partial_inplace */                      
+	 0xffff,	        /* src_mask */                             
+	 0xffff,        	/* dst_mask */                             
+	 false),                /* pcrel_offset */
+  
+  /* TOC relative load address.  */
+  HOWTO (0x13,	                /* type */                                 
+	 0,	                /* rightshift */                           
+	 2,	                /* size (0 = byte, 1 = short, 2 = long) */ 
+	 16,	                /* bitsize */                   
+	 false,	                /* pc_relative */                          
+	 0,	                /* bitpos */                               
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 0,		        /* special_function */                     
+	 "R_TRLA",              /* name */                                 
+	 true,	                /* partial_inplace */                      
+	 0xffff,	        /* src_mask */                             
+	 0xffff,        	/* dst_mask */                             
+	 false),                /* pcrel_offset */
+  
+  /* Modifiable relative branch.  */
+  HOWTO (0x14,	                /* type */                                 
+	 1,	                /* rightshift */                           
+	 2,	                /* size (0 = byte, 1 = short, 2 = long) */ 
+	 32,	                /* bitsize */                   
+	 false,	                /* pc_relative */                          
+	 0,	                /* bitpos */                               
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 0,		        /* special_function */                     
+	 "R_RRTBI",             /* name */                                 
+	 true,	                /* partial_inplace */                      
+	 0xffffffff,	        /* src_mask */                             
+	 0xffffffff,        	/* dst_mask */                             
+	 false),                /* pcrel_offset */
+  
+  /* Modifiable absolute branch.  */
+  HOWTO (0x15,	                /* type */                                 
+	 1,	                /* rightshift */                           
+	 2,	                /* size (0 = byte, 1 = short, 2 = long) */ 
+	 32,	                /* bitsize */                   
+	 false,	                /* pc_relative */                          
+	 0,	                /* bitpos */                               
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 0,		        /* special_function */                     
+	 "R_RRTBA",             /* name */                                 
+	 true,	                /* partial_inplace */                      
+	 0xffffffff,	        /* src_mask */                             
+	 0xffffffff,        	/* dst_mask */                             
+	 false),                /* pcrel_offset */
+  
+  /* Modifiable call absolute indirect.  */
+  HOWTO (0x16,	                /* type */                                 
+	 0,	                /* rightshift */                           
+	 2,	                /* size (0 = byte, 1 = short, 2 = long) */ 
+	 16,	                /* bitsize */                   
+	 false,	                /* pc_relative */                          
+	 0,	                /* bitpos */                               
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 0,		        /* special_function */                     
+	 "R_CAI",               /* name */                                 
+	 true,	                /* partial_inplace */                      
+	 0xffff,	        /* src_mask */                             
+	 0xffff,        	/* dst_mask */                             
+	 false),                /* pcrel_offset */
+  
+  /* Modifiable call relative.  */
+  HOWTO (0x17,	                /* type */                                 
+	 0,	                /* rightshift */                           
+	 2,	                /* size (0 = byte, 1 = short, 2 = long) */ 
+	 16,	                /* bitsize */                   
+	 false,	                /* pc_relative */                          
+	 0,	                /* bitpos */                               
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 0,		        /* special_function */                     
+	 "R_CREL",              /* name */                                 
+	 true,	                /* partial_inplace */                      
+	 0xffff,	        /* src_mask */                             
+	 0xffff,        	/* dst_mask */                             
+	 false),                /* pcrel_offset */
+  
+  /* Modifiable branch absolute.  */
+  HOWTO (0x18,	                /* type */                                 
+	 0,	                /* rightshift */                           
+	 2,	                /* size (0 = byte, 1 = short, 2 = long) */ 
+	 16,	                /* bitsize */                   
+	 false,	                /* pc_relative */                          
+	 0,	                /* bitpos */                               
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 0,		        /* special_function */                     
+	 "R_RBA",               /* name */                                 
+	 true,	                /* partial_inplace */                      
+	 0xffff,	        /* src_mask */                             
+	 0xffff,        	/* dst_mask */                             
+	 false),                /* pcrel_offset */
+  
+  /* Modifiable branch absolute.  */
+  HOWTO (0x19,	                /* type */                                 
+	 0,	                /* rightshift */                           
+	 2,	                /* size (0 = byte, 1 = short, 2 = long) */ 
+	 16,	                /* bitsize */                   
+	 false,	                /* pc_relative */                          
+	 0,	                /* bitpos */                               
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 0,		        /* special_function */                     
+	 "R_RBAC",              /* name */                                 
+	 true,	                /* partial_inplace */                      
+	 0xffff,	        /* src_mask */                             
+	 0xffff,        	/* dst_mask */                             
+	 false),                /* pcrel_offset */
+  
+  /* Modifiable branch relative.  */
+  HOWTO (0x1a,	                /* type */                                 
+	 0,	                /* rightshift */                           
+	 2,	                /* size (0 = byte, 1 = short, 2 = long) */ 
+	 26,	                /* bitsize */                   
+	 false,	                /* pc_relative */                          
+	 0,	                /* bitpos */                               
+	 complain_overflow_signed, /* complain_on_overflow */
+	 0,		        /* special_function */                     
+	 "R_RBR",               /* name */                                 
+	 true,	                /* partial_inplace */                      
+	 0xffff,	        /* src_mask */                             
+	 0xffff,        	/* dst_mask */                             
+	 false),                /* pcrel_offset */
+  
+  /* Modifiable branch absolute.  */
+  HOWTO (0x1b,	                /* type */                                 
+	 0,	                /* rightshift */                           
+	 2,	                /* size (0 = byte, 1 = short, 2 = long) */ 
+	 16,	                /* bitsize */                   
+	 false,	                /* pc_relative */                          
+	 0,	                /* bitpos */                               
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 0,		        /* special_function */                     
+	 "R_RBRC",              /* name */                                 
+	 true,	                /* partial_inplace */                      
+	 0xffff,	        /* src_mask */                             
+	 0xffff,        	/* dst_mask */                             
+	 false)                 /* pcrel_offset */
+};
+
+static void
+xcoff_rtype2howto (relent, internal)
+     arelent *relent;
+     struct internal_reloc *internal;
+{
+  relent->howto = xcoff_howto_table + internal->r_type;
+
+  /* The r_size field of an XCOFF reloc encodes the bitsize of the
+     relocation, as well as indicating whether it is signed or not.
+     Doublecheck that the relocation information gathered from the
+     type matches this information.  */
+  if (relent->howto->bitsize != ((unsigned int) internal->r_size & 0x1f) + 1)
+    abort ();
+#if 0
+  if ((internal->r_size & 0x80) != 0
+      ? (relent->howto->complain_on_overflow != complain_overflow_signed)
+      : (relent->howto->complain_on_overflow != complain_overflow_bitfield))
+    abort ();
+#endif
+}
+
+static reloc_howto_type *
+xcoff_reloc_type_lookup (abfd, code)
+     bfd *abfd;
+     bfd_reloc_code_real_type code;
+{
+  switch (code)
+    {
+    case BFD_RELOC_PPC_B26:
+      return &xcoff_howto_table[0xa];
+    case BFD_RELOC_PPC_BA26:
+      return &xcoff_howto_table[8];
+    case BFD_RELOC_PPC_TOC16:
+      return &xcoff_howto_table[3];
+    case BFD_RELOC_32:
+    case BFD_RELOC_CTOR:
+      return &xcoff_howto_table[0];
+    default:
+      return NULL;
+    }
+}
+
+#define SELECT_RELOC(internal, howto)					\
+  {									\
+    internal.r_type = howto->type;					\
+    internal.r_size =							\
+      ((howto->complain_on_overflow == complain_overflow_signed		\
+	? 0x80								\
+	: 0)								\
+       | (howto->bitsize - 1));						\
+  }
+
+#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3)
+
+#define COFF_LONG_FILENAMES
+
+#define RTYPE2HOWTO(cache_ptr, dst) xcoff_rtype2howto (cache_ptr, dst)
+
+#define coff_mkobject xcoff_mkobject
+#define coff_bfd_copy_private_bfd_data xcoff_copy_private_bfd_data
+#define coff_bfd_is_local_label_name xcoff_is_local_label_name
+#define coff_bfd_reloc_type_lookup xcoff_reloc_type_lookup
+#define coff_relocate_section _bfd_ppc_xcoff_relocate_section
+
+#include "coffcode.h"
+
+/* XCOFF archive support.  The original version of this code was by
+   Damon A. Permezel.  It was enhanced to permit cross support, and
+   writing archive files, by Ian Lance Taylor, Cygnus Support.
+
+   XCOFF uses its own archive format.  Everything is hooked together
+   with file offset links, so it is possible to rapidly update an
+   archive in place.  Of course, we don't do that.  An XCOFF archive
+   has a real file header, not just an ARMAG string.  The structure of
+   the file header and of each archive header appear below.
+
+   An XCOFF archive also has a member table, which is a list of
+   elements in the archive (you can get that by looking through the
+   linked list, but you have to read a lot more of the file).  The
+   member table has a normal archive header with an empty name.  It is
+   normally (and perhaps must be) the second to last entry in the
+   archive.  The member table data is almost printable ASCII.  It
+   starts with a 12 character decimal string which is the number of
+   entries in the table.  For each entry it has a 12 character decimal
+   string which is the offset in the archive of that member.  These
+   entries are followed by a series of null terminated strings which
+   are the member names for each entry.
+
+   Finally, an XCOFF archive has a global symbol table, which is what
+   we call the armap.  The global symbol table has a normal archive
+   header with an empty name.  It is normally (and perhaps must be)
+   the last entry in the archive.  The contents start with a four byte
+   binary number which is the number of entries.  This is followed by
+   a that many four byte binary numbers; each is the file offset of an
+   entry in the archive.  These numbers are followed by a series of
+   null terminated strings, which are symbol names.  */
+
+/* XCOFF archives use this as a magic string.  */
+
+#define XCOFFARMAG "<aiaff>\012"
+#define SXCOFFARMAG 8
+
+/* This terminates an XCOFF archive member name.  */
+
+#define XCOFFARFMAG "`\012"
+#define SXCOFFARFMAG 2
+
+/* XCOFF archives start with this (printable) structure.  */
+
+struct xcoff_ar_file_hdr
+{
+  /* Magic string.  */
+  char magic[SXCOFFARMAG];
+
+  /* Offset of the member table (decimal ASCII string).  */
+  char memoff[12];
+
+  /* Offset of the global symbol table (decimal ASCII string).  */
+  char symoff[12];
+
+  /* Offset of the first member in the archive (decimal ASCII string).  */
+  char firstmemoff[12];
+
+  /* Offset of the last member in the archive (decimal ASCII string).  */
+  char lastmemoff[12];
+
+  /* Offset of the first member on the free list (decimal ASCII
+     string).  */
+  char freeoff[12];
+};
+
+#define SIZEOF_AR_FILE_HDR (5 * 12 + SXCOFFARMAG)
+
+/* Each XCOFF archive member starts with this (printable) structure.  */
+
+struct xcoff_ar_hdr
+{
+  /* File size not including the header (decimal ASCII string).  */
+  char size[12];
+
+  /* File offset of next archive member (decimal ASCII string).  */
+  char nextoff[12];
+
+  /* File offset of previous archive member (decimal ASCII string).  */
+  char prevoff[12];
+
+  /* File mtime (decimal ASCII string).  */
+  char date[12];
+
+  /* File UID (decimal ASCII string).  */
+  char uid[12];
+
+  /* File GID (decimal ASCII string).  */
+  char gid[12];
+
+  /* File mode (octal ASCII string).  */
+  char mode[12];
+
+  /* Length of file name (decimal ASCII string).  */
+  char namlen[4];
+
+  /* This structure is followed by the file name.  The length of the
+     name is given in the namlen field.  If the length of the name is
+     odd, the name is followed by a null byte.  The name and optional
+     null byte are followed by XCOFFARFMAG, which is not included in
+     namlen.  The contents of the archive member follow; the number of
+     bytes is given in the size field.  */
+};
+
+#define SIZEOF_AR_HDR (7 * 12 + 4)
+
+/* We store a copy of the xcoff_ar_file_hdr in the tdata field of the
+   artdata structure.  */
+#define xcoff_ardata(abfd) \
+  ((struct xcoff_ar_file_hdr *) bfd_ardata (abfd)->tdata)
+
+/* We store a copy of the xcoff_ar_hdr in the arelt_data field of an
+   archive element.  */
+#define arch_eltdata(bfd) ((struct areltdata *) ((bfd)->arelt_data))
+#define arch_xhdr(bfd) \
+  ((struct xcoff_ar_hdr *) arch_eltdata (bfd)->arch_header)
+
+/* XCOFF archives do not have anything which corresponds to an
+   extended name table.  */
+
+#define xcoff_slurp_extended_name_table bfd_false
+#define xcoff_construct_extended_name_table \
+  ((boolean (*) PARAMS ((bfd *, char **, bfd_size_type *, const char **))) \
+   bfd_false)
+#define xcoff_truncate_arname bfd_dont_truncate_arname
+
+/* We can use the standard get_elt_at_index routine.  */
+
+#define xcoff_get_elt_at_index _bfd_generic_get_elt_at_index
+
+/* XCOFF archives do not have a timestamp.  */
+
+#define xcoff_update_armap_timestamp bfd_true
+
+/* Read in the armap of an XCOFF archive.  */
+
+static boolean
+xcoff_slurp_armap (abfd)
+     bfd *abfd;
+{
+  file_ptr off;
+  struct xcoff_ar_hdr hdr;
+  size_t namlen;
+  bfd_size_type sz;
+  bfd_byte *contents, *cend;
+  unsigned int c, i;
+  carsym *arsym;
+  bfd_byte *p;
+
+  if (xcoff_ardata (abfd) == NULL)
+    {
+      bfd_has_map (abfd) = false;
+      return true;
+    }
+
+  off = strtol (xcoff_ardata (abfd)->symoff, (char **) NULL, 10);
+  if (off == 0)
+    {
+      bfd_has_map (abfd) = false;
+      return true;
+    }
+
+  if (bfd_seek (abfd, off, SEEK_SET) != 0)
+    return false;
+
+  /* The symbol table starts with a normal archive header.  */
+  if (bfd_read ((PTR) &hdr, SIZEOF_AR_HDR, 1, abfd) != SIZEOF_AR_HDR)
+    return false;
+
+  /* Skip the name (normally empty).  */
+  namlen = strtol (hdr.namlen, (char **) NULL, 10);
+  if (bfd_seek (abfd, ((namlen + 1) & ~1) + SXCOFFARFMAG, SEEK_CUR) != 0)
+    return false;
+
+  /* Read in the entire symbol table.  */
+  sz = strtol (hdr.size, (char **) NULL, 10);
+  contents = (bfd_byte *) bfd_alloc (abfd, sz);
+  if (contents == NULL)
+    return false;
+  if (bfd_read ((PTR) contents, 1, sz, abfd) != sz)
+    return false;
+
+  /* The symbol table starts with a four byte count.  */
+  c = bfd_h_get_32 (abfd, contents);
+
+  if (c * 4 >= sz)
+    {
+      bfd_set_error (bfd_error_bad_value);
+      return false;
+    }
+
+  bfd_ardata (abfd)->symdefs = ((carsym *)
+				bfd_alloc (abfd, c * sizeof (carsym)));
+  if (bfd_ardata (abfd)->symdefs == NULL)
+    return false;
+
+  /* After the count comes a list of four byte file offsets.  */
+  for (i = 0, arsym = bfd_ardata (abfd)->symdefs, p = contents + 4;
+       i < c;
+       ++i, ++arsym, p += 4)
+    arsym->file_offset = bfd_h_get_32 (abfd, p);
+
+  /* After the file offsets come null terminated symbol names.  */
+  cend = contents + sz;
+  for (i = 0, arsym = bfd_ardata (abfd)->symdefs;
+       i < c;
+       ++i, ++arsym, p += strlen ((char *) p) + 1)
+    {
+      if (p >= cend)
+	{
+	  bfd_set_error (bfd_error_bad_value);
+	  return false;
+	}
+      arsym->name = (char *) p;
+    }
+
+  bfd_ardata (abfd)->symdef_count = c;
+  bfd_has_map (abfd) = true;
+
+  return true;
+}
+
+/* See if this is an XCOFF archive.  */
+
+static const bfd_target *
+xcoff_archive_p (abfd)
+     bfd *abfd;
+{
+  struct xcoff_ar_file_hdr hdr;
+
+  if (bfd_read ((PTR) &hdr, SIZEOF_AR_FILE_HDR, 1, abfd)
+      != SIZEOF_AR_FILE_HDR)
+    {
+      if (bfd_get_error () != bfd_error_system_call)
+	bfd_set_error (bfd_error_wrong_format);
+      return NULL;
+    }
+
+  if (strncmp (hdr.magic, XCOFFARMAG, SXCOFFARMAG) != 0)
+    {
+      bfd_set_error (bfd_error_wrong_format);
+      return NULL;
+    }
+
+  /* We are setting bfd_ardata(abfd) here, but since bfd_ardata
+     involves a cast, we can't do it as the left operand of
+     assignment.  */
+  abfd->tdata.aout_ar_data =
+    (struct artdata *) bfd_zalloc (abfd, sizeof (struct artdata));
+
+  if (bfd_ardata (abfd) == (struct artdata *) NULL)
+    return NULL;
+
+  bfd_ardata (abfd)->first_file_filepos = strtol (hdr.firstmemoff,
+						  (char **) NULL, 10);
+  bfd_ardata (abfd)->cache = NULL;
+  bfd_ardata (abfd)->archive_head = NULL;
+  bfd_ardata (abfd)->symdefs = NULL;
+  bfd_ardata (abfd)->extended_names = NULL;
+
+  bfd_ardata (abfd)->tdata = bfd_zalloc (abfd, SIZEOF_AR_FILE_HDR);
+  if (bfd_ardata (abfd)->tdata == NULL)
+    return NULL;
+
+  memcpy (bfd_ardata (abfd)->tdata, &hdr, SIZEOF_AR_FILE_HDR);
+
+  if (! xcoff_slurp_armap (abfd))
+    {
+      bfd_release (abfd, bfd_ardata (abfd));
+      abfd->tdata.aout_ar_data = (struct artdata *) NULL;
+      return NULL;
+    }
+
+  return abfd->xvec;
+}
+
+/* Read the archive header in an XCOFF archive.  */
+
+static PTR
+xcoff_read_ar_hdr (abfd)
+     bfd *abfd;
+{
+  struct xcoff_ar_hdr hdr;
+  size_t namlen;
+  struct xcoff_ar_hdr *hdrp;
+  struct areltdata *ret;
+
+  if (bfd_read ((PTR) &hdr, SIZEOF_AR_HDR, 1, abfd) != SIZEOF_AR_HDR)
+    return NULL;
+
+  namlen = strtol (hdr.namlen, (char **) NULL, 10);
+  hdrp = (struct xcoff_ar_hdr *) bfd_alloc (abfd, SIZEOF_AR_HDR + namlen + 1);
+  if (hdrp == NULL)
+    return NULL;
+  memcpy (hdrp, &hdr, SIZEOF_AR_HDR);
+  if (bfd_read ((char *) hdrp + SIZEOF_AR_HDR, 1, namlen, abfd) != namlen)
+    return NULL;
+  ((char *) hdrp)[SIZEOF_AR_HDR + namlen] = '\0';
+
+  ret = (struct areltdata *) bfd_alloc (abfd, sizeof (struct areltdata));
+  if (ret == NULL)
+    return NULL;
+  ret->arch_header = (char *) hdrp;
+  ret->parsed_size = strtol (hdr.size, (char **) NULL, 10);
+  ret->filename = (char *) hdrp + SIZEOF_AR_HDR;
+
+  /* Skip over the XCOFFARFMAG at the end of the file name.  */
+  if (bfd_seek (abfd, (namlen & 1) + SXCOFFARFMAG, SEEK_CUR) != 0)
+    return NULL;
+
+  return (PTR) ret;
+}
+
+/* Open the next element in an XCOFF archive.  */
+
+static bfd *
+xcoff_openr_next_archived_file (archive, last_file)
+     bfd *archive;
+     bfd *last_file;
+{
+  file_ptr filestart;
+
+  if (xcoff_ardata (archive) == NULL)
+    {
+      bfd_set_error (bfd_error_invalid_operation);
+      return NULL;
+    }
+
+  if (last_file == NULL)
+    filestart = bfd_ardata (archive)->first_file_filepos;
+  else
+    filestart = strtol (arch_xhdr (last_file)->nextoff, (char **) NULL, 10);
+
+  if (filestart == 0
+      || filestart == strtol (xcoff_ardata (archive)->memoff,
+			      (char **) NULL, 10)
+      || filestart == strtol (xcoff_ardata (archive)->symoff,
+			      (char **) NULL, 10))
+    {
+      bfd_set_error (bfd_error_no_more_archived_files);
+      return NULL;
+    }
+
+  return _bfd_get_elt_at_filepos (archive, filestart);
+}
+
+/* Stat an element in an XCOFF archive.  */
+
+static int
+xcoff_generic_stat_arch_elt (abfd, s)
+     bfd *abfd;
+     struct stat *s;
+{
+  struct xcoff_ar_hdr *hdrp;
+
+  if (abfd->arelt_data == NULL)
+    {
+      bfd_set_error (bfd_error_invalid_operation);
+      return -1;
+    }
+
+  hdrp = arch_xhdr (abfd);
+
+  s->st_mtime = strtol (hdrp->date, (char **) NULL, 10);
+  s->st_uid = strtol (hdrp->uid, (char **) NULL, 10);
+  s->st_gid = strtol (hdrp->gid, (char **) NULL, 10);
+  s->st_mode = strtol (hdrp->mode, (char **) NULL, 8);
+  s->st_size = arch_eltdata (abfd)->parsed_size;
+
+  return 0;
+}
+
+/* Normalize a file name for inclusion in an archive.  */
+
+static const char *
+normalize_filename (abfd)
+     bfd *abfd;
+{
+  const char *file;
+  const char *filename;
+
+  file = bfd_get_filename (abfd);
+  filename = strrchr (file, '/');
+  if (filename != NULL)
+    filename++;
+  else
+    filename = file;
+  return filename;
+}
+
+/* Write out an XCOFF armap.  */
+
+/*ARGSUSED*/
+static boolean
+xcoff_write_armap (abfd, elength, map, orl_count, stridx)
+     bfd *abfd;
+     unsigned int elength;
+     struct orl *map;
+     unsigned int orl_count;
+     int stridx;
+{
+  struct xcoff_ar_hdr hdr;
+  char *p;
+  unsigned char buf[4];
+  bfd *sub;
+  file_ptr fileoff;
+  unsigned int i;
+
+  memset (&hdr, 0, sizeof hdr);
+  sprintf (hdr.size, "%ld", (long) (4 + orl_count * 4 + stridx));
+  sprintf (hdr.nextoff, "%d", 0);
+  memcpy (hdr.prevoff, xcoff_ardata (abfd)->memoff, 12);
+  sprintf (hdr.date, "%d", 0);
+  sprintf (hdr.uid, "%d", 0);
+  sprintf (hdr.gid, "%d", 0);
+  sprintf (hdr.mode, "%d", 0);
+  sprintf (hdr.namlen, "%d", 0);
+
+  /* We need spaces, not null bytes, in the header.  */
+  for (p = (char *) &hdr; p < (char *) &hdr + SIZEOF_AR_HDR; p++)
+    if (*p == '\0')
+      *p = ' ';
+
+  if (bfd_write ((PTR) &hdr, SIZEOF_AR_HDR, 1, abfd) != SIZEOF_AR_HDR
+      || bfd_write (XCOFFARFMAG, 1, SXCOFFARFMAG, abfd) != SXCOFFARFMAG)
+    return false;
+  
+  bfd_h_put_32 (abfd, orl_count, buf);
+  if (bfd_write (buf, 1, 4, abfd) != 4)
+    return false;
+
+  sub = abfd->archive_head;
+  fileoff = SIZEOF_AR_FILE_HDR;
+  i = 0;
+  while (sub != NULL && i < orl_count)
+    {
+      size_t namlen;
+
+      while (((bfd *) (map[i]).pos) == sub)
+	{
+	  bfd_h_put_32 (abfd, fileoff, buf);
+	  if (bfd_write (buf, 1, 4, abfd) != 4)
+	    return false;
+	  ++i;
+	}
+      namlen = strlen (normalize_filename (sub));
+      namlen = (namlen + 1) &~ 1;
+      fileoff += (SIZEOF_AR_HDR
+		  + namlen
+		  + SXCOFFARFMAG
+		  + arelt_size (sub));
+      fileoff = (fileoff + 1) &~ 1;
+      sub = sub->next;
+    }
+
+  for (i = 0; i < orl_count; i++)
+    {
+      const char *name;
+      size_t namlen;
+
+      name = *map[i].name;
+      namlen = strlen (name);
+      if (bfd_write (name, 1, namlen + 1, abfd) != namlen + 1)
+	return false;
+    }
+
+  if ((stridx & 1) != 0)
+    {
+      char b;
+
+      b = '\0';
+      if (bfd_write (&b, 1, 1, abfd) != 1)
+	return false;
+    }
+
+  return true;
+}
+
+/* Write out an XCOFF archive.  We always write an entire archive,
+   rather than fussing with the freelist and so forth.  */
+
+static boolean
+xcoff_write_archive_contents (abfd)
+     bfd *abfd;
+{
+  struct xcoff_ar_file_hdr fhdr;
+  size_t count;
+  size_t total_namlen;
+  file_ptr *offsets;
+  boolean makemap;
+  boolean hasobjects;
+  file_ptr prevoff, nextoff;
+  bfd *sub;
+  unsigned int i;
+  struct xcoff_ar_hdr ahdr;
+  bfd_size_type size;
+  char *p;
+  char decbuf[13];
+
+  memset (&fhdr, 0, sizeof fhdr);
+  strncpy (fhdr.magic, XCOFFARMAG, SXCOFFARMAG);
+  sprintf (fhdr.firstmemoff, "%d", SIZEOF_AR_FILE_HDR);
+  sprintf (fhdr.freeoff, "%d", 0);
+
+  count = 0;
+  total_namlen = 0;
+  for (sub = abfd->archive_head; sub != NULL; sub = sub->next)
+    {
+      ++count;
+      total_namlen += strlen (normalize_filename (sub)) + 1;
+    }
+  offsets = (file_ptr *) bfd_alloc (abfd, count * sizeof (file_ptr));
+  if (offsets == NULL)
+    return false;
+
+  if (bfd_seek (abfd, SIZEOF_AR_FILE_HDR, SEEK_SET) != 0)
+    return false;
+
+  makemap = bfd_has_map (abfd);
+  hasobjects = false;
+  prevoff = 0;
+  nextoff = SIZEOF_AR_FILE_HDR;
+  for (sub = abfd->archive_head, i = 0; sub != NULL; sub = sub->next, i++)
+    {
+      const char *name;
+      size_t namlen;
+      struct xcoff_ar_hdr *ahdrp;
+      bfd_size_type remaining;
+
+      if (makemap && ! hasobjects)
+	{
+	  if (bfd_check_format (sub, bfd_object))
+	    hasobjects = true;
+	}
+
+      name = normalize_filename (sub);
+      namlen = strlen (name);
+
+      if (sub->arelt_data != NULL)
+	ahdrp = arch_xhdr (sub);
+      else
+	ahdrp = NULL;
+
+      if (ahdrp == NULL)
+	{
+	  struct stat s;
+
+	  memset (&ahdr, 0, sizeof ahdr);
+	  ahdrp = &ahdr;
+	  if (stat (bfd_get_filename (sub), &s) != 0)
+	    {
+	      bfd_set_error (bfd_error_system_call);
+	      return false;
+	    }
+
+	  sprintf (ahdrp->size, "%ld", (long) s.st_size);
+	  sprintf (ahdrp->date, "%ld", (long) s.st_mtime);
+	  sprintf (ahdrp->uid, "%ld", (long) s.st_uid);
+	  sprintf (ahdrp->gid, "%ld", (long) s.st_gid);
+	  sprintf (ahdrp->mode, "%o", (unsigned int) s.st_mode);
+
+	  if (sub->arelt_data == NULL)
+	    {
+	      sub->arelt_data = bfd_alloc (sub, sizeof (struct areltdata));
+	      if (sub->arelt_data == NULL)
+		return false;
+	    }
+
+	  arch_eltdata (sub)->parsed_size = s.st_size;
+	}
+
+      sprintf (ahdrp->prevoff, "%ld", (long) prevoff);
+      sprintf (ahdrp->namlen, "%ld", (long) namlen);
+
+      /* If the length of the name is odd, we write out the null byte
+         after the name as well.  */
+      namlen = (namlen + 1) &~ 1;
+
+      remaining = arelt_size (sub);
+      size = (SIZEOF_AR_HDR
+	      + namlen
+	      + SXCOFFARFMAG
+	      + remaining);
+
+      BFD_ASSERT (nextoff == bfd_tell (abfd));
+
+      offsets[i] = nextoff;
+
+      prevoff = nextoff;
+      nextoff += size + (size & 1);
+
+      sprintf (ahdrp->nextoff, "%ld", (long) nextoff);
+
+      /* We need spaces, not null bytes, in the header.  */
+      for (p = (char *) ahdrp; p < (char *) ahdrp + SIZEOF_AR_HDR; p++)
+	if (*p == '\0')
+	  *p = ' ';
+
+      if (bfd_write ((PTR) ahdrp, 1, SIZEOF_AR_HDR, abfd) != SIZEOF_AR_HDR
+	  || bfd_write ((PTR) name, 1, namlen, abfd) != namlen
+	  || (bfd_write ((PTR) XCOFFARFMAG, 1, SXCOFFARFMAG, abfd)
+	      != SXCOFFARFMAG))
+	return false;
+
+      if (bfd_seek (sub, (file_ptr) 0, SEEK_SET) != 0)
+	return false;
+      while (remaining != 0)
+	{
+	  bfd_size_type amt;
+	  bfd_byte buffer[DEFAULT_BUFFERSIZE];
+
+	  amt = sizeof buffer;
+	  if (amt > remaining)
+	    amt = remaining;
+	  if (bfd_read (buffer, 1, amt, sub) != amt
+	      || bfd_write (buffer, 1, amt, abfd) != amt)
+	    return false;
+	  remaining -= amt;
+	}
+
+      if ((size & 1) != 0)
+	{
+	  bfd_byte b;
+
+	  b = '\0';
+	  if (bfd_write (&b, 1, 1, abfd) != 1)
+	    return false;
+	}
+    }
+
+  sprintf (fhdr.lastmemoff, "%ld", (long) prevoff);
+
+  /* Write out the member table.  */
+
+  BFD_ASSERT (nextoff == bfd_tell (abfd));
+  sprintf (fhdr.memoff, "%ld", (long) nextoff);
+
+  memset (&ahdr, 0, sizeof ahdr);
+  sprintf (ahdr.size, "%ld", (long) (12 + count * 12 + total_namlen));
+  sprintf (ahdr.prevoff, "%ld", (long) prevoff);
+  sprintf (ahdr.date, "%d", 0);
+  sprintf (ahdr.uid, "%d", 0);
+  sprintf (ahdr.gid, "%d", 0);
+  sprintf (ahdr.mode, "%d", 0);
+  sprintf (ahdr.namlen, "%d", 0);
+
+  size = (SIZEOF_AR_HDR
+	  + 12
+	  + count * 12
+	  + total_namlen
+	  + SXCOFFARFMAG);
+
+  prevoff = nextoff;
+  nextoff += size + (size & 1);
+
+  if (makemap && hasobjects)
+    sprintf (ahdr.nextoff, "%ld", (long) nextoff);
+  else
+    sprintf (ahdr.nextoff, "%d", 0);
+
+  /* We need spaces, not null bytes, in the header.  */
+  for (p = (char *) &ahdr; p < (char *) &ahdr + SIZEOF_AR_HDR; p++)
+    if (*p == '\0')
+      *p = ' ';
+
+  if (bfd_write ((PTR) &ahdr, 1, SIZEOF_AR_HDR, abfd) != SIZEOF_AR_HDR
+      || (bfd_write ((PTR) XCOFFARFMAG, 1, SXCOFFARFMAG, abfd)
+	  != SXCOFFARFMAG))
+    return false;
+
+  sprintf (decbuf, "%-12ld", (long) count);
+  if (bfd_write ((PTR) decbuf, 1, 12, abfd) != 12)
+    return false;
+  for (i = 0; i < count; i++)
+    {
+      sprintf (decbuf, "%-12ld", (long) offsets[i]);
+      if (bfd_write ((PTR) decbuf, 1, 12, abfd) != 12)
+	return false;
+    }
+  for (sub = abfd->archive_head; sub != NULL; sub = sub->next)
+    {
+      const char *name;
+      size_t namlen;
+
+      name = normalize_filename (sub);
+      namlen = strlen (name);
+      if (bfd_write ((PTR) name, 1, namlen + 1, abfd) != namlen + 1)
+	return false;
+    }
+  if ((size & 1) != 0)
+    {
+      bfd_byte b;
+
+      b = '\0';
+      if (bfd_write ((PTR) &b, 1, 1, abfd) != 1)
+	return false;
+    }
+
+  /* Write out the armap, if appropriate.  */
+
+  if (! makemap || ! hasobjects)
+    sprintf (fhdr.symoff, "%d", 0);
+  else
+    {
+      BFD_ASSERT (nextoff == bfd_tell (abfd));
+      sprintf (fhdr.symoff, "%ld", (long) nextoff);
+      bfd_ardata (abfd)->tdata = (PTR) &fhdr;
+      if (! _bfd_compute_and_write_armap (abfd, 0))
+	return false;
+    }
+
+  /* Write out the archive file header.  */
+
+  /* We need spaces, not null bytes, in the header.  */
+  for (p = (char *) &fhdr; p < (char *) &fhdr + SIZEOF_AR_FILE_HDR; p++)
+    if (*p == '\0')
+      *p = ' ';
+
+  if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
+      || (bfd_write ((PTR) &fhdr, SIZEOF_AR_FILE_HDR, 1, abfd) !=
+	  SIZEOF_AR_FILE_HDR))
+    return false;
+
+  return true;
+}
+
+/* We can't use the usual coff_sizeof_headers routine, because AIX
+   always uses an a.out header.  */
+
+/*ARGSUSED*/
+static int
+_bfd_xcoff_sizeof_headers (abfd, reloc)
+     bfd *abfd;
+     boolean reloc;
+{
+  int size;
+
+  size = FILHSZ;
+  if (xcoff_data (abfd)->full_aouthdr)
+    size += AOUTSZ;
+  else
+    size += SMALL_AOUTSZ;
+  size += abfd->section_count * SCNHSZ;
+  return size;
+}
+
+#define CORE_FILE_P _bfd_dummy_target
+
+#define coff_core_file_failing_command _bfd_nocore_core_file_failing_command
+#define coff_core_file_failing_signal _bfd_nocore_core_file_failing_signal
+#define coff_core_file_matches_executable_p \
+  _bfd_nocore_core_file_matches_executable_p
+
+#ifdef AIX_CORE
+#undef CORE_FILE_P
+#define CORE_FILE_P rs6000coff_core_p
+extern const bfd_target * rs6000coff_core_p ();
+extern boolean rs6000coff_get_section_contents ();
+extern boolean rs6000coff_core_file_matches_executable_p ();
+
+#undef	coff_core_file_matches_executable_p
+#define coff_core_file_matches_executable_p  \
+				     rs6000coff_core_file_matches_executable_p
+
+extern char *rs6000coff_core_file_failing_command PARAMS ((bfd *abfd));
+#undef coff_core_file_failing_command
+#define coff_core_file_failing_command rs6000coff_core_file_failing_command
+
+extern int rs6000coff_core_file_failing_signal PARAMS ((bfd *abfd));
+#undef coff_core_file_failing_signal
+#define coff_core_file_failing_signal rs6000coff_core_file_failing_signal
+
+#undef	coff_get_section_contents
+#define	coff_get_section_contents	rs6000coff_get_section_contents
+#endif /* AIX_CORE */
+
+#ifdef LYNX_CORE
+
+#undef CORE_FILE_P
+#define CORE_FILE_P lynx_core_file_p
+extern const bfd_target *lynx_core_file_p PARAMS ((bfd *abfd));
+
+extern boolean lynx_core_file_matches_executable_p PARAMS ((bfd *core_bfd,
+							    bfd *exec_bfd));
+#undef	coff_core_file_matches_executable_p
+#define coff_core_file_matches_executable_p lynx_core_file_matches_executable_p
+
+extern char *lynx_core_file_failing_command PARAMS ((bfd *abfd));
+#undef coff_core_file_failing_command
+#define coff_core_file_failing_command lynx_core_file_failing_command
+
+extern int lynx_core_file_failing_signal PARAMS ((bfd *abfd));
+#undef coff_core_file_failing_signal
+#define coff_core_file_failing_signal lynx_core_file_failing_signal
+
+#endif /* LYNX_CORE */
+
+#define _bfd_xcoff_bfd_get_relocated_section_contents \
+  coff_bfd_get_relocated_section_contents
+#define _bfd_xcoff_bfd_relax_section coff_bfd_relax_section
+#define _bfd_xcoff_bfd_gc_sections coff_bfd_gc_sections
+#define _bfd_xcoff_bfd_link_split_section coff_bfd_link_split_section
+
+/* The transfer vector that leads the outside world to all of the above. */
+
+const bfd_target
+#ifdef TARGET_SYM
+  TARGET_SYM =
+#else
+  rs6000coff_vec =
+#endif
+{
+#ifdef TARGET_NAME
+  TARGET_NAME,
+#else
+  "aixcoff-rs6000",		/* name */
+#endif
+  bfd_target_coff_flavour,	
+  BFD_ENDIAN_BIG,		/* data byte order is big */
+  BFD_ENDIAN_BIG,		/* header byte order is big */
+
+  (HAS_RELOC | EXEC_P |		/* object flags */
+   HAS_LINENO | HAS_DEBUG | DYNAMIC |
+   HAS_SYMS | HAS_LOCALS | WP_TEXT),
+
+  (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
+  0,				/* leading char */
+  '/',				/* ar_pad_char */
+  15,				/* ar_max_namelen??? FIXMEmgo */
+
+  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, coff_object_p, 	/* bfd_check_format */
+     xcoff_archive_p, CORE_FILE_P},
+  {bfd_false, coff_mkobject,		/* bfd_set_format */
+     _bfd_generic_mkarchive, bfd_false},
+  {bfd_false, coff_write_object_contents,	/* bfd_write_contents */
+     xcoff_write_archive_contents, bfd_false},
+
+     BFD_JUMP_TABLE_GENERIC (coff),
+     BFD_JUMP_TABLE_COPY (coff),
+     BFD_JUMP_TABLE_CORE (coff),
+     BFD_JUMP_TABLE_ARCHIVE (xcoff),
+     BFD_JUMP_TABLE_SYMBOLS (coff),
+     BFD_JUMP_TABLE_RELOCS (coff),
+     BFD_JUMP_TABLE_WRITE (coff),
+     BFD_JUMP_TABLE_LINK (_bfd_xcoff),
+     BFD_JUMP_TABLE_DYNAMIC (_bfd_xcoff),
+
+  COFF_SWAP_TABLE,
+};