3f99570ec9
and do the swapping here rather than calling ntohl from the N_* macros. This cleans up assumptions about the size of a host long, the existence to ntohl, etc.
434 lines
13 KiB
C
434 lines
13 KiB
C
/* Define a target vector and some small routines for a variant of a.out.
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Copyright (C) 1990, 1991, 1992, 1993 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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#ifdef SWAP_MAGIC
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exec.a_info = SWAP_MAGIC (exec_bytes.e_info);
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#else
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exec.a_info = bfd_h_get_32 (abfd, exec_bytes.e_info);
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#endif /* SWAP_MAGIC */
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if (N_BADMAG (exec)) return 0;
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#ifdef MACHTYPE_OK
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if (!(MACHTYPE_OK (N_MACHTYPE (exec)))) return 0;
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#endif
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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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0, /* exec header is counted */
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};
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#define MY_backend_data &MY(backend_data)
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#endif
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#ifndef MY_bfd_final_link
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/* Final link routine. We need to use a call back to get the correct
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offsets in the output file. */
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static void final_link_callback
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PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *));
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static void
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final_link_callback (abfd, ptreloff, pdreloff, psymoff)
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bfd *abfd;
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file_ptr *ptreloff;
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file_ptr *pdreloff;
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file_ptr *psymoff;
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{
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struct internal_exec *execp = exec_hdr (abfd);
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*ptreloff = N_TRELOFF (*execp);
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*pdreloff = N_DRELOFF (*execp);
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*psymoff = N_SYMOFF (*execp);
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}
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static boolean
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MY_bfd_final_link (abfd, info)
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bfd *abfd;
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struct bfd_link_info *info;
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{
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return NAME(aout,final_link) (abfd, info, final_link_callback);
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}
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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 \
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(void (*) PARAMS ((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_symbol_info
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#define MY_get_symbol_info NAME(aout,get_symbol_info)
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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_get_relocated_section_contents
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#define MY_bfd_get_relocated_section_contents \
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bfd_generic_get_relocated_section_contents
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#endif
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#ifndef MY_bfd_relax_section
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#define MY_bfd_relax_section bfd_generic_relax_section
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#endif
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#ifndef MY_bfd_reloc_type_lookup
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#define MY_bfd_reloc_type_lookup NAME(aout,reloc_type_lookup)
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#endif
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#ifndef MY_bfd_make_debug_symbol
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#define MY_bfd_make_debug_symbol 0
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#endif
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#ifndef MY_bfd_link_hash_table_create
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#define MY_bfd_link_hash_table_create NAME(aout,link_hash_table_create)
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#endif
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#ifndef MY_bfd_link_add_symbols
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#define MY_bfd_link_add_symbols NAME(aout,link_add_symbols)
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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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/* Aout archives normally use spaces for padding */
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#ifndef AR_PAD_CHAR
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#define AR_PAD_CHAR ' '
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#endif
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#ifndef MY_BFD_TARGET
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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 | 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, /* ar_pad_char */
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15, /* ar_max_namelen */
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3, /* minimum alignment */
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#ifdef TARGET_IS_BIG_ENDIAN_P
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bfd_getb64, bfd_getb_signed_64, bfd_putb64,
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bfd_getb32, bfd_getb_signed_32, bfd_putb32,
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bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
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bfd_getb64, bfd_getb_signed_64, bfd_putb64,
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bfd_getb32, bfd_getb_signed_32, bfd_putb32,
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bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
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#else
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bfd_getl64, bfd_getl_signed_64, bfd_putl64,
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bfd_getl32, bfd_getl_signed_32, bfd_putl32,
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bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
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bfd_getl64, bfd_getl_signed_64, bfd_putl64,
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bfd_getl32, bfd_getl_signed_32, bfd_putl32,
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bfd_getl16, bfd_getl_signed_16, bfd_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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JUMP_TABLE (MY),
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(PTR) MY_backend_data,
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};
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#endif /* MY_BFD_TARGET */
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