214f8f2392
* aoutx.h (some_aout_object_p): Restore old aout_data value if this type
doesn't match. Don't lose if file sections have already been created.
(set_arch_mach): Set reloc_entry_size.
(slurp_symbol_table): Use bfd_h_get_{16,8} for reaeding symbol data.
* hosts/i386bsd.h: New file.
* configure.in: Recognize i[34]86-*-bsd host.
* aout-target.h (callback, write_object_contents): Delete unused variables.
* aoutx.h (reloc_type_lookup): New function.
* aout-target.h (MY_reloc_howto_type_lookup): Use it as default.
* aoutf1.h (sunos4_reloc_type_lookup): Deleted.
(MY_reloc_howto_type_lookup): Don't define it.
* aoutx.h (adjust_sizes_and_vmas): Don't bother with padding for OMAGIC files.
(slurp_symbol_table): Use header byte order, not target byte order, for reading
symbol data.
401 lines
12 KiB
C
401 lines
12 KiB
C
/* Define a target vector and some small routines for a variant of a.out.
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Copyright (C) 1990-1991 Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "aout/aout64.h"
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#include "aout/stab_gnu.h"
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#include "aout/ar.h"
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/*#include "libaout.h"*/
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extern CONST struct reloc_howto_struct * NAME(aout,reloc_type_lookup) ();
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/* Set parameters about this a.out file that are machine-dependent.
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This routine is called from some_aout_object_p just before it returns. */
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#ifndef MY_callback
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static bfd_target *
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DEFUN(MY(callback),(abfd),
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bfd *abfd)
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{
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struct internal_exec *execp = exec_hdr (abfd);
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/* Calculate the file positions of the parts of a newly read aout header */
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obj_textsec (abfd)->_raw_size = N_TXTSIZE(*execp);
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/* The virtual memory addresses of the sections */
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obj_textsec (abfd)->vma = N_TXTADDR(*execp);
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obj_datasec (abfd)->vma = N_DATADDR(*execp);
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obj_bsssec (abfd)->vma = N_BSSADDR(*execp);
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/* The file offsets of the sections */
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obj_textsec (abfd)->filepos = N_TXTOFF (*execp);
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obj_datasec (abfd)->filepos = N_DATOFF (*execp);
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/* The file offsets of the relocation info */
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obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp);
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obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp);
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/* The file offsets of the string table and symbol table. */
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obj_sym_filepos (abfd) = N_SYMOFF (*execp);
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obj_str_filepos (abfd) = N_STROFF (*execp);
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/* Determine the architecture and machine type of the object file. */
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#ifdef SET_ARCH_MACH
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SET_ARCH_MACH(abfd, *execp);
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#else
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bfd_default_set_arch_mach(abfd, DEFAULT_ARCH, 0);
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#endif
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/* Don't set sizes now -- can't be sure until we know arch & mach.
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Sizes get set in set_sizes callback, later. */
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#if 0
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adata(abfd).page_size = PAGE_SIZE;
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#ifdef SEGMENT_SIZE
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adata(abfd).segment_size = SEGMENT_SIZE;
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#else
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adata(abfd).segment_size = PAGE_SIZE;
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#endif
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adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
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#endif
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return abfd->xvec;
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}
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#endif
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#ifndef MY_object_p
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/* Finish up the reading of an a.out file header */
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static bfd_target *
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DEFUN(MY(object_p),(abfd),
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bfd *abfd)
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{
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struct external_exec exec_bytes; /* Raw exec header from file */
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struct internal_exec exec; /* Cleaned-up exec header */
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bfd_target *target;
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if (bfd_read ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd)
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!= EXEC_BYTES_SIZE) {
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bfd_error = wrong_format;
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return 0;
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}
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exec.a_info = bfd_h_get_32 (abfd, exec_bytes.e_info);
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if (N_BADMAG (exec)) return 0;
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NAME(aout,swap_exec_header_in)(abfd, &exec_bytes, &exec);
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target = NAME(aout,some_aout_object_p) (abfd, &exec, MY(callback));
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#ifdef ENTRY_CAN_BE_ZERO
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/* The NEWSOS3 entry-point is/was 0, which (amongst other lossage)
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* means that it isn't obvious if EXEC_P should be set.
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* All of the following must be true for an executable:
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* There must be no relocations, the bfd can be neither an
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* archive nor an archive element, and the file must be executable. */
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if (exec.a_trsize + exec.a_drsize == 0
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&& bfd_get_format(abfd) == bfd_object && abfd->my_archive == NULL)
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{
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struct stat buf;
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#ifndef S_IXUSR
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#define S_IXUSR 0100 /* Execute by owner. */
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#endif
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if (stat(abfd->filename, &buf) == 0 && (buf.st_mode & S_IXUSR))
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abfd->flags |= EXEC_P;
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}
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#endif /* ENTRY_CAN_BE_ZERO */
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return target;
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}
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#define MY_object_p MY(object_p)
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#endif
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#ifndef MY_mkobject
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static boolean
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DEFUN(MY(mkobject),(abfd),
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bfd *abfd)
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{
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if (NAME(aout,mkobject)(abfd) == false)
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return false;
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#if 0 /* Sizes get set in set_sizes callback, later, after we know
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the architecture and machine. */
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adata(abfd).page_size = PAGE_SIZE;
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#ifdef SEGMENT_SIZE
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adata(abfd).segment_size = SEGMENT_SIZE;
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#else
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adata(abfd).segment_size = PAGE_SIZE;
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#endif
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adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
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#endif
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return true;
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}
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#define MY_mkobject MY(mkobject)
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#endif
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/* Write an object file.
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Section contents have already been written. We write the
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file header, symbols, and relocation. */
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#ifndef MY_write_object_contents
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static boolean
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DEFUN(MY(write_object_contents),(abfd),
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bfd *abfd)
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{
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struct external_exec exec_bytes;
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struct internal_exec *execp = exec_hdr (abfd);
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#if CHOOSE_RELOC_SIZE
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CHOOSE_RELOC_SIZE(abfd);
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#else
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obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
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#endif
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WRITE_HEADERS(abfd, execp);
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return true;
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}
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#define MY_write_object_contents MY(write_object_contents)
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#endif
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#ifndef MY_set_sizes
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static boolean
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DEFUN(MY(set_sizes),(abfd), bfd *abfd)
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{
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adata(abfd).page_size = PAGE_SIZE;
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#ifdef SEGMENT_SIZE
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adata(abfd).segment_size = SEGMENT_SIZE;
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#else
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adata(abfd).segment_size = PAGE_SIZE;
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#endif
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adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
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return true;
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}
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#define MY_set_sizes MY(set_sizes)
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#endif
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#ifndef MY_backend_data
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static CONST struct aout_backend_data MY(backend_data) = {
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0, /* zmagic contiguous */
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0, /* text incl header */
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0, /* text vma? */
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MY_set_sizes,
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};
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#define MY_backend_data &MY(backend_data)
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#endif
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/* We assume BFD generic archive files. */
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#ifndef MY_openr_next_archived_file
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#define MY_openr_next_archived_file bfd_generic_openr_next_archived_file
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#endif
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#ifndef MY_generic_stat_arch_elt
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#define MY_generic_stat_arch_elt bfd_generic_stat_arch_elt
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#endif
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#ifndef MY_slurp_armap
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#define MY_slurp_armap bfd_slurp_bsd_armap
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#endif
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#ifndef MY_slurp_extended_name_table
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#define MY_slurp_extended_name_table _bfd_slurp_extended_name_table
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#endif
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#ifndef MY_write_armap
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#define MY_write_armap bsd_write_armap
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#endif
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#ifndef MY_truncate_arname
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#define MY_truncate_arname bfd_bsd_truncate_arname
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#endif
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/* No core file defined here -- configure in trad-core.c separately. */
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#ifndef MY_core_file_failing_command
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#define MY_core_file_failing_command _bfd_dummy_core_file_failing_command
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#endif
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#ifndef MY_core_file_failing_signal
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#define MY_core_file_failing_signal _bfd_dummy_core_file_failing_signal
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#endif
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#ifndef MY_core_file_matches_executable_p
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#define MY_core_file_matches_executable_p \
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_bfd_dummy_core_file_matches_executable_p
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#endif
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#ifndef MY_core_file_p
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#define MY_core_file_p _bfd_dummy_target
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#endif
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#ifndef MY_bfd_debug_info_start
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#define MY_bfd_debug_info_start bfd_void
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#endif
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#ifndef MY_bfd_debug_info_end
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#define MY_bfd_debug_info_end bfd_void
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#endif
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#ifndef MY_bfd_debug_info_accumulate
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#define MY_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
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#endif
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#ifndef MY_core_file_failing_command
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#define MY_core_file_failing_command NAME(aout,core_file_failing_command)
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#endif
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#ifndef MY_core_file_failing_signal
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#define MY_core_file_failing_signal NAME(aout,core_file_failing_signal)
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#endif
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#ifndef MY_core_file_matches_executable_p
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#define MY_core_file_matches_executable_p NAME(aout,core_file_matches_executable_p)
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#endif
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#ifndef MY_slurp_armap
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#define MY_slurp_armap NAME(aout,slurp_armap)
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#endif
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#ifndef MY_slurp_extended_name_table
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#define MY_slurp_extended_name_table NAME(aout,slurp_extended_name_table)
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#endif
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#ifndef MY_truncate_arname
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#define MY_truncate_arname NAME(aout,truncate_arname)
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#endif
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#ifndef MY_write_armap
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#define MY_write_armap NAME(aout,write_armap)
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#endif
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#ifndef MY_close_and_cleanup
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#define MY_close_and_cleanup NAME(aout,close_and_cleanup)
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#endif
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#ifndef MY_set_section_contents
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#define MY_set_section_contents NAME(aout,set_section_contents)
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#endif
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#ifndef MY_get_section_contents
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#define MY_get_section_contents NAME(aout,get_section_contents)
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#endif
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#ifndef MY_new_section_hook
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#define MY_new_section_hook NAME(aout,new_section_hook)
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#endif
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#ifndef MY_get_symtab_upper_bound
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#define MY_get_symtab_upper_bound NAME(aout,get_symtab_upper_bound)
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#endif
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#ifndef MY_get_symtab
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#define MY_get_symtab NAME(aout,get_symtab)
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#endif
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#ifndef MY_get_reloc_upper_bound
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#define MY_get_reloc_upper_bound NAME(aout,get_reloc_upper_bound)
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#endif
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#ifndef MY_canonicalize_reloc
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#define MY_canonicalize_reloc NAME(aout,canonicalize_reloc)
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#endif
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#ifndef MY_make_empty_symbol
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#define MY_make_empty_symbol NAME(aout,make_empty_symbol)
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#endif
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#ifndef MY_print_symbol
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#define MY_print_symbol NAME(aout,print_symbol)
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#endif
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#ifndef MY_get_lineno
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#define MY_get_lineno NAME(aout,get_lineno)
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#endif
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#ifndef MY_set_arch_mach
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#define MY_set_arch_mach NAME(aout,set_arch_mach)
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#endif
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#ifndef MY_openr_next_archived_file
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#define MY_openr_next_archived_file NAME(aout,openr_next_archived_file)
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#endif
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#ifndef MY_find_nearest_line
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#define MY_find_nearest_line NAME(aout,find_nearest_line)
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#endif
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#ifndef MY_generic_stat_arch_elt
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#define MY_generic_stat_arch_elt NAME(aout,generic_stat_arch_elt)
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#endif
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#ifndef MY_sizeof_headers
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#define MY_sizeof_headers NAME(aout,sizeof_headers)
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#endif
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#ifndef MY_bfd_debug_info_start
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#define MY_bfd_debug_info_start NAME(aout,bfd_debug_info_start)
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#endif
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#ifndef MY_bfd_debug_info_end
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#define MY_bfd_debug_info_end NAME(aout,bfd_debug_info_end)
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#endif
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#ifndef MY_bfd_debug_info_accumulat
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#define MY_bfd_debug_info_accumulat NAME(aout,bfd_debug_info_accumulat)
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#endif
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#ifndef MY_reloc_howto_type_lookup
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#define MY_reloc_howto_type_lookup NAME(aout,reloc_type_lookup)
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#endif
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#ifndef MY_make_debug_symbol
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#define MY_make_debug_symbol 0
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#endif
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/* Aout symbols normally have leading underscores */
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#ifndef MY_symbol_leading_char
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#define MY_symbol_leading_char '_'
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#endif
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bfd_target MY(vec) =
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{
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TARGETNAME, /* name */
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bfd_target_aout_flavour,
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#ifdef TARGET_IS_BIG_ENDIAN_P
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true, /* target byte order (big) */
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true, /* target headers byte order (big) */
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#else
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false, /* target byte order (little) */
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false, /* target headers byte order (little) */
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#endif
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(HAS_RELOC | EXEC_P | /* object flags */
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HAS_LINENO | HAS_DEBUG |
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HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
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(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
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MY_symbol_leading_char,
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' ', /* ar_pad_char */
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15, /* ar_max_namelen */
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1, /* minimum alignment */
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#ifdef TARGET_IS_BIG_ENDIAN_P
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_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* data */
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_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */
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#else
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_do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */
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_do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* hdrs */
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#endif
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{_bfd_dummy_target, MY_object_p, /* bfd_check_format */
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bfd_generic_archive_p, MY_core_file_p},
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{bfd_false, MY_mkobject, /* bfd_set_format */
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_bfd_generic_mkarchive, bfd_false},
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{bfd_false, MY_write_object_contents, /* bfd_write_contents */
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_bfd_write_archive_contents, bfd_false},
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MY_core_file_failing_command,
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MY_core_file_failing_signal,
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MY_core_file_matches_executable_p,
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MY_slurp_armap,
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MY_slurp_extended_name_table,
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MY_truncate_arname,
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MY_write_armap,
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MY_close_and_cleanup,
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MY_set_section_contents,
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MY_get_section_contents,
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MY_new_section_hook,
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MY_get_symtab_upper_bound,
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MY_get_symtab,
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MY_get_reloc_upper_bound,
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MY_canonicalize_reloc,
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MY_make_empty_symbol,
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MY_print_symbol,
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MY_get_lineno,
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MY_set_arch_mach,
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MY_openr_next_archived_file,
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MY_find_nearest_line,
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MY_generic_stat_arch_elt,
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MY_sizeof_headers,
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MY_bfd_debug_info_start,
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MY_bfd_debug_info_end,
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MY_bfd_debug_info_accumulate,
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bfd_generic_get_relocated_section_contents,
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bfd_generic_relax_section,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* COFF stuff?! */
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MY_reloc_howto_type_lookup,
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MY_make_debug_symbol,
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(PTR) MY_backend_data,
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};
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