Initial revision

1 files changed, 371 insertions, 0 deletions

diff --git a/bfd/i386os9k.c b/bfd/i386os9k.c
new file mode 100644
index 0000000000..2a01f5b2f8
--- /dev/null
+++ b/bfd/i386os9k.c
@@ -0,0 +1,371 @@
+/* BFD back-end for os9000 i386 binaries.
+   Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
+   Written by 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.  */
+
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+#include "bfdlink.h"
+#include "libaout.h"		/* BFD a.out internal data structures */
+#include "os9k.h"
+
+static const bfd_target *os9k_callback PARAMS ((bfd *));
+
+/* Swaps the information in an executable header taken from a raw byte
+   stream memory image, into the internal exec_header structure.  */
+boolean
+os9k_swap_exec_header_in (abfd, raw_bytes, execp)
+     bfd *abfd;
+     mh_com *raw_bytes;
+     struct internal_exec *execp;
+{
+  mh_com *bytes = (mh_com *) raw_bytes;
+  unsigned int dload, dmemsize, dmemstart;
+
+  /* Now fill in fields in the execp, from the bytes in the raw data.  */
+  execp->a_info = bfd_h_get_16 (abfd, bytes->m_sync);
+  execp->a_syms = 0;
+  execp->a_entry = bfd_h_get_32 (abfd, bytes->m_exec);
+  execp->a_talign = 2;
+  execp->a_dalign = 2;
+  execp->a_balign = 2;
+
+  dload = bfd_h_get_32 (abfd, bytes->m_idata);
+  execp->a_data = dload + 8;
+
+  if (bfd_seek (abfd, (file_ptr) dload, SEEK_SET) != 0
+      || (bfd_read (&dmemstart, sizeof (dmemstart), 1, abfd)
+	  != sizeof (dmemstart))
+      || (bfd_read (&dmemsize, sizeof (dmemsize), 1, abfd)
+	  != sizeof (dmemsize)))
+    return false;
+
+  execp->a_tload = 0;
+  execp->a_dload = bfd_h_get_32 (abfd, (unsigned char *) &dmemstart);
+  execp->a_text = dload - execp->a_tload;
+  execp->a_data = bfd_h_get_32 (abfd, (unsigned char *) &dmemsize);
+  execp->a_bss = bfd_h_get_32 (abfd, bytes->m_data) - execp->a_data;
+
+  execp->a_trsize = 0;
+  execp->a_drsize = 0;
+
+  return true;
+}
+
+#if 0
+/* Swaps the information in an internal exec header structure into the
+   supplied buffer ready for writing to disk.  */
+
+PROTO (void, os9k_swap_exec_header_out,
+         (bfd * abfd,
+	  struct internal_exec * execp,
+	  struct mh_com * raw_bytes));
+void
+os9k_swap_exec_header_out (abfd, execp, raw_bytes)
+     bfd *abfd;
+     struct internal_exec *execp;
+     mh_com *raw_bytes;
+{
+  mh_com *bytes = (mh_com *) raw_bytes;
+
+  /* Now fill in fields in the raw data, from the fields in the exec struct. */
+  bfd_h_put_32 (abfd, execp->a_info, bytes->e_info);
+  bfd_h_put_32 (abfd, execp->a_text, bytes->e_text);
+  bfd_h_put_32 (abfd, execp->a_data, bytes->e_data);
+  bfd_h_put_32 (abfd, execp->a_bss, bytes->e_bss);
+  bfd_h_put_32 (abfd, execp->a_syms, bytes->e_syms);
+  bfd_h_put_32 (abfd, execp->a_entry, bytes->e_entry);
+  bfd_h_put_32 (abfd, execp->a_trsize, bytes->e_trsize);
+  bfd_h_put_32 (abfd, execp->a_drsize, bytes->e_drsize);
+  bfd_h_put_32 (abfd, execp->a_tload, bytes->e_tload);
+  bfd_h_put_32 (abfd, execp->a_dload, bytes->e_dload);
+  bytes->e_talign[0] = execp->a_talign;
+  bytes->e_dalign[0] = execp->a_dalign;
+  bytes->e_balign[0] = execp->a_balign;
+  bytes->e_relaxable[0] = execp->a_relaxable;
+}
+
+#endif	/* 0 */
+
+static const bfd_target *
+os9k_object_p (abfd)
+     bfd *abfd;
+{
+  struct internal_exec anexec;
+  mh_com exec_bytes;
+
+  if (bfd_read ((PTR) & exec_bytes, MHCOM_BYTES_SIZE, 1, abfd)
+      != MHCOM_BYTES_SIZE)
+    {
+      if (bfd_get_error () != bfd_error_system_call)
+	bfd_set_error (bfd_error_wrong_format);
+      return 0;
+    }
+
+  anexec.a_info = bfd_h_get_16 (abfd, exec_bytes.m_sync);
+  if (N_BADMAG (anexec))
+    {
+      bfd_set_error (bfd_error_wrong_format);
+      return 0;
+    }
+
+  if (! os9k_swap_exec_header_in (abfd, &exec_bytes, &anexec))
+    {
+      if (bfd_get_error () != bfd_error_system_call)
+	bfd_set_error (bfd_error_wrong_format);
+      return NULL;
+    }
+  return aout_32_some_aout_object_p (abfd, &anexec, os9k_callback);
+}
+
+
+/* Finish up the opening of a b.out file for reading.  Fill in all the
+   fields that are not handled by common code.  */
+
+static const bfd_target *
+os9k_callback (abfd)
+     bfd *abfd;
+{
+  struct internal_exec *execp = exec_hdr (abfd);
+  unsigned long bss_start;
+
+  /* Architecture and machine type */
+  bfd_set_arch_mach (abfd, bfd_arch_i386, 0);
+
+  /* The positions of the string table and symbol table.  */
+  obj_str_filepos (abfd) = 0;
+  obj_sym_filepos (abfd) = 0;
+
+  /* The alignments of the sections */
+  obj_textsec (abfd)->alignment_power = execp->a_talign;
+  obj_datasec (abfd)->alignment_power = execp->a_dalign;
+  obj_bsssec (abfd)->alignment_power = execp->a_balign;
+
+  /* The starting addresses of the sections.  */
+  obj_textsec (abfd)->vma = execp->a_tload;
+  obj_datasec (abfd)->vma = execp->a_dload;
+
+  /* And reload the sizes, since the aout module zaps them */
+  obj_textsec (abfd)->_raw_size = execp->a_text;
+
+  bss_start = execp->a_dload + execp->a_data;	/* BSS = end of data section */
+  obj_bsssec (abfd)->vma = align_power (bss_start, execp->a_balign);
+
+  /* The file positions of the sections */
+  obj_textsec (abfd)->filepos = execp->a_entry;
+  obj_datasec (abfd)->filepos = execp->a_dload;
+
+  /* The file positions of the relocation info ***
+  obj_textsec (abfd)->rel_filepos = N_TROFF(*execp);
+  obj_datasec (abfd)->rel_filepos =  N_DROFF(*execp);
+  */
+
+  adata (abfd).page_size = 1;	/* Not applicable. */
+  adata (abfd).segment_size = 1;/* Not applicable. */
+  adata (abfd).exec_bytes_size = MHCOM_BYTES_SIZE;
+
+  return abfd->xvec;
+}
+
+#if 0
+struct bout_data_struct
+{
+  struct aoutdata a;
+  struct internal_exec e;
+};
+
+static boolean
+os9k_mkobject (abfd)
+     bfd *abfd;
+{
+  struct bout_data_struct *rawptr;
+
+  rawptr = (struct bout_data_struct *) bfd_zalloc (abfd, sizeof (struct bout_data_struct));
+  if (rawptr == NULL)
+    return false;
+
+  abfd->tdata.bout_data = rawptr;
+  exec_hdr (abfd) = &rawptr->e;
+
+  obj_textsec (abfd) = (asection *) NULL;
+  obj_datasec (abfd) = (asection *) NULL;
+  obj_bsssec (abfd) = (asection *) NULL;
+
+  return true;
+}
+
+static boolean
+os9k_write_object_contents (abfd)
+     bfd *abfd;
+{
+  struct external_exec swapped_hdr;
+
+  if (! aout_32_make_sections (abfd))
+    return false;
+
+  exec_hdr (abfd)->a_info = BMAGIC;
+
+  exec_hdr (abfd)->a_text = obj_textsec (abfd)->_raw_size;
+  exec_hdr (abfd)->a_data = obj_datasec (abfd)->_raw_size;
+  exec_hdr (abfd)->a_bss = obj_bsssec (abfd)->_raw_size;
+  exec_hdr (abfd)->a_syms = bfd_get_symcount (abfd) * sizeof (struct nlist);
+  exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
+  exec_hdr (abfd)->a_trsize = ((obj_textsec (abfd)->reloc_count) *
+			       sizeof (struct relocation_info));
+  exec_hdr (abfd)->a_drsize = ((obj_datasec (abfd)->reloc_count) *
+			       sizeof (struct relocation_info));
+
+  exec_hdr (abfd)->a_talign = obj_textsec (abfd)->alignment_power;
+  exec_hdr (abfd)->a_dalign = obj_datasec (abfd)->alignment_power;
+  exec_hdr (abfd)->a_balign = obj_bsssec (abfd)->alignment_power;
+
+  exec_hdr (abfd)->a_tload = obj_textsec (abfd)->vma;
+  exec_hdr (abfd)->a_dload = obj_datasec (abfd)->vma;
+
+  bout_swap_exec_header_out (abfd, exec_hdr (abfd), &swapped_hdr);
+
+  if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
+      || (bfd_write ((PTR) & swapped_hdr, 1, EXEC_BYTES_SIZE, abfd)
+	  != EXEC_BYTES_SIZE))
+    return false;
+
+  /* Now write out reloc info, followed by syms and strings */
+  if (bfd_get_symcount (abfd) != 0)
+    {
+      if (bfd_seek (abfd, (file_ptr) (N_SYMOFF (*exec_hdr (abfd))), SEEK_SET)
+	  != 0)
+	return false;
+
+      if (!aout_32_write_syms (abfd))
+	return false;
+
+      if (bfd_seek (abfd, (file_ptr) (N_TROFF (*exec_hdr (abfd))), SEEK_SET)
+	  != 0)
+	return false;
+
+      if (!b_out_squirt_out_relocs (abfd, obj_textsec (abfd)))
+	return false;
+      if (bfd_seek (abfd, (file_ptr) (N_DROFF (*exec_hdr (abfd))), SEEK_SET)
+	  != 0)
+	return false;
+
+      if (!b_out_squirt_out_relocs (abfd, obj_datasec (abfd)))
+	return false;
+    }
+  return true;
+}
+
+static boolean
+os9k_set_section_contents (abfd, section, location, offset, count)
+     bfd *abfd;
+     sec_ptr section;
+     unsigned char *location;
+     file_ptr offset;
+     int count;
+{
+
+  if (abfd->output_has_begun == false)
+    {				/* set by bfd.c handler */
+      if (! aout_32_make_sections (abfd))
+	return false;
+
+      obj_textsec (abfd)->filepos = sizeof (struct internal_exec);
+      obj_datasec (abfd)->filepos = obj_textsec (abfd)->filepos
+	+ obj_textsec (abfd)->_raw_size;
+
+    }
+  /* regardless, once we know what we're doing, we might as well get going */
+  if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
+    return false;
+
+  if (count != 0)
+    {
+      return (bfd_write ((PTR) location, 1, count, abfd) == count) ? true : false;
+    }
+  return true;
+}
+#endif	/* 0 */
+
+static int
+os9k_sizeof_headers (ignore_abfd, ignore)
+     bfd *ignore_abfd;
+     boolean ignore;
+{
+  return sizeof (struct internal_exec);
+}
+
+
+/***********************************************************************/
+
+#define aout_32_close_and_cleanup aout_32_bfd_free_cached_info
+
+#define aout_32_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
+
+#define aout_32_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
+
+#define aout_32_get_section_contents_in_window \
+  _bfd_generic_get_section_contents_in_window
+
+#define os9k_bfd_get_relocated_section_contents \
+  bfd_generic_get_relocated_section_contents
+#define os9k_bfd_relax_section bfd_generic_relax_section
+#define os9k_bfd_gc_sections bfd_generic_gc_sections
+#define os9k_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
+#define os9k_bfd_link_add_symbols _bfd_generic_link_add_symbols
+#define os9k_bfd_final_link _bfd_generic_final_link
+#define os9k_bfd_link_split_section  _bfd_generic_link_split_section
+
+const bfd_target i386os9k_vec =
+{
+  "i386os9k",			/* name */
+  bfd_target_os9k_flavour,
+  BFD_ENDIAN_LITTLE,		/* data byte order is little */
+  BFD_ENDIAN_LITTLE,		/* hdr byte order is little */
+  (HAS_RELOC | EXEC_P | WP_TEXT),	/* object flags */
+  (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD),	/* section flags */
+  0,				/* symbol leading char */
+  ' ',				/* ar_pad_char */
+  16,				/* ar_max_namelen */
+
+  bfd_getl64, bfd_getl_signed_64, bfd_putl64,
+  bfd_getl32, bfd_getl_signed_32, bfd_putl32,
+  bfd_getl16, bfd_getl_signed_16, bfd_putl16,	/* data */
+  bfd_getl64, bfd_getl_signed_64, bfd_putl64,
+  bfd_getl32, bfd_getl_signed_32, bfd_putl32,
+  bfd_getl16, bfd_getl_signed_16, bfd_putl16,	/* hdrs */
+  {_bfd_dummy_target, os9k_object_p,	/* bfd_check_format */
+   bfd_generic_archive_p, _bfd_dummy_target},
+  {bfd_false, bfd_false,	/* bfd_set_format */
+   _bfd_generic_mkarchive, bfd_false},
+  {bfd_false, bfd_false,	/* bfd_write_contents */
+   _bfd_write_archive_contents, bfd_false},
+
+     BFD_JUMP_TABLE_GENERIC (aout_32),
+     BFD_JUMP_TABLE_COPY (_bfd_generic),
+     BFD_JUMP_TABLE_CORE (_bfd_nocore),
+     BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd),
+     BFD_JUMP_TABLE_SYMBOLS (aout_32),
+     BFD_JUMP_TABLE_RELOCS (aout_32),
+     BFD_JUMP_TABLE_WRITE (aout_32),
+     BFD_JUMP_TABLE_LINK (os9k),
+     BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+
+  (PTR) 0,
+};