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528 lines
16 KiB
C
528 lines
16 KiB
C
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/* BFD back-end for a.out.adobe binaries.
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Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
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Written by Cygnus Support. Based on bout.c.
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "aout/adobe.h"
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#include "aout/stab_gnu.h"
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#include "libaout.h" /* BFD a.out internal data structures */
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extern const bfd_target a_out_adobe_vec; /* Forward decl */
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static const bfd_target *aout_adobe_callback PARAMS ((bfd *));
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extern boolean aout_32_slurp_symbol_table PARAMS ((bfd *abfd));
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extern boolean aout_32_write_syms PARAMS ((bfd *));
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static void aout_adobe_write_section PARAMS ((bfd *abfd, sec_ptr sect));
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/* Swaps the information in an executable header taken from a raw byte
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stream memory image, into the internal exec_header structure. */
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void aout_adobe_swap_exec_header_in
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PARAMS ((bfd *abfd, struct external_exec *raw_bytes,
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struct internal_exec *execp));
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void
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aout_adobe_swap_exec_header_in (abfd, raw_bytes, execp)
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bfd *abfd;
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struct external_exec *raw_bytes;
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struct internal_exec *execp;
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{
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struct external_exec *bytes = (struct external_exec *)raw_bytes;
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/* Now fill in fields in the execp, from the bytes in the raw data. */
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execp->a_info = bfd_h_get_32 (abfd, bytes->e_info);
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execp->a_text = GET_WORD (abfd, bytes->e_text);
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execp->a_data = GET_WORD (abfd, bytes->e_data);
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execp->a_bss = GET_WORD (abfd, bytes->e_bss);
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execp->a_syms = GET_WORD (abfd, bytes->e_syms);
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execp->a_entry = GET_WORD (abfd, bytes->e_entry);
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execp->a_trsize = GET_WORD (abfd, bytes->e_trsize);
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execp->a_drsize = GET_WORD (abfd, bytes->e_drsize);
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}
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/* Swaps the information in an internal exec header structure into the
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supplied buffer ready for writing to disk. */
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PROTO(void, aout_adobe_swap_exec_header_out,
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(bfd *abfd,
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struct internal_exec *execp,
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struct external_exec *raw_bytes));
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void
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aout_adobe_swap_exec_header_out (abfd, execp, raw_bytes)
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bfd *abfd;
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struct internal_exec *execp;
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struct external_exec *raw_bytes;
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{
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struct external_exec *bytes = (struct external_exec *)raw_bytes;
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/* Now fill in fields in the raw data, from the fields in the exec struct. */
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bfd_h_put_32 (abfd, execp->a_info , bytes->e_info);
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PUT_WORD (abfd, execp->a_text , bytes->e_text);
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PUT_WORD (abfd, execp->a_data , bytes->e_data);
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PUT_WORD (abfd, execp->a_bss , bytes->e_bss);
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PUT_WORD (abfd, execp->a_syms , bytes->e_syms);
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PUT_WORD (abfd, execp->a_entry , bytes->e_entry);
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PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize);
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PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize);
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}
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static const bfd_target *
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aout_adobe_object_p (abfd)
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bfd *abfd;
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{
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struct internal_exec anexec;
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struct external_exec exec_bytes;
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char *targ;
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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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if (bfd_get_error () != bfd_error_system_call)
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bfd_set_error (bfd_error_wrong_format);
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return 0;
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}
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anexec.a_info = bfd_h_get_32 (abfd, exec_bytes.e_info);
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/* Normally we just compare for the magic number.
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However, a bunch of Adobe tools aren't fixed up yet; they generate
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files using ZMAGIC(!).
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If the environment variable GNUTARGET is set to "a.out.adobe", we will
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take just about any a.out file as an Adobe a.out file. FIXME! */
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if (N_BADMAG (anexec)) {
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targ = getenv ("GNUTARGET");
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if (targ && !strcmp (targ, a_out_adobe_vec.name))
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; /* Just continue anyway, if specifically set to this format */
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else
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{
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bfd_set_error (bfd_error_wrong_format);
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return 0;
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}
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}
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aout_adobe_swap_exec_header_in (abfd, &exec_bytes, &anexec);
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return aout_32_some_aout_object_p (abfd, &anexec, aout_adobe_callback);
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}
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/* Finish up the opening of a b.out file for reading. Fill in all the
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fields that are not handled by common code. */
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static const bfd_target *
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aout_adobe_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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asection *sect;
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struct external_segdesc ext[1];
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char *section_name;
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char try_again[30]; /* name and number */
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char *newname;
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int trynum;
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flagword flags;
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/* Architecture and machine type -- unknown in this format. */
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bfd_set_arch_mach(abfd, bfd_arch_unknown, 0);
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/* The positions of the string table and symbol table. */
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obj_str_filepos (abfd) = N_STROFF (*execp);
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obj_sym_filepos (abfd) = N_SYMOFF (*execp);
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/* Suck up the section information from the file, one section at a time. */
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for (;;) {
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if (bfd_read ((PTR) ext, 1, sizeof (*ext), abfd) != sizeof (*ext)) {
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if (bfd_get_error () != bfd_error_system_call)
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bfd_set_error (bfd_error_wrong_format);
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return 0;
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}
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switch (ext->e_type[0]) {
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case N_TEXT:
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section_name = ".text";
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flags = SEC_CODE | SEC_LOAD | SEC_ALLOC | SEC_HAS_CONTENTS;
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break;
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case N_DATA:
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section_name = ".data";
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flags = SEC_DATA | SEC_LOAD | SEC_ALLOC | SEC_HAS_CONTENTS;
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break;
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case N_BSS:
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section_name = ".bss";
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flags = SEC_DATA | SEC_HAS_CONTENTS;
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break;
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case 0:
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goto no_more_sections;
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default:
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(*_bfd_error_handler)
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(_("%s: Unknown section type in a.out.adobe file: %x\n"),
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bfd_get_filename (abfd), ext->e_type[0]);
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goto no_more_sections;
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}
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/* First one is called ".text" or whatever; subsequent ones are
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".text1", ".text2", ... */
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bfd_set_error (bfd_error_no_error);
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sect = bfd_make_section (abfd, section_name);
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trynum = 0;
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while (!sect) {
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if (bfd_get_error () != bfd_error_no_error)
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return 0; /* Some other error -- slide into the sunset */
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sprintf (try_again, "%s%d", section_name, ++trynum);
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sect = bfd_make_section (abfd, try_again);
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}
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/* Fix the name, if it is a sprintf'd name. */
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if (sect->name == try_again) {
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newname = (char *) bfd_zalloc(abfd, strlen (sect->name));
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if (newname == NULL)
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return 0;
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strcpy (newname, sect->name);
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sect->name = newname;
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}
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/* Now set the section's attributes. */
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bfd_set_section_flags (abfd, sect, flags);
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sect->_raw_size = ((ext->e_size[0] << 8) /* Assumed big-endian */
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| ext->e_size[1] << 8)
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sect->_cooked_size = sect->_raw_size;
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sect->vma = bfd_h_get_32 (abfd, ext->e_virtbase);
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sect->filepos = bfd_h_get_32 (abfd, ext->e_filebase);
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/* FIXME XXX alignment? */
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/* Set relocation information for first section of each type. */
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if (trynum == 0) switch (ext->e_type[0]) {
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case N_TEXT:
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sect->rel_filepos = N_TRELOFF (*execp);
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sect->reloc_count = execp->a_trsize;
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break;
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case N_DATA:
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sect->rel_filepos = N_DRELOFF (*execp);
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sect->reloc_count = execp->a_drsize;
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break;
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}
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}
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no_more_sections:
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adata(abfd).reloc_entry_size = sizeof (struct reloc_std_external);
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adata(abfd).symbol_entry_size = sizeof (struct external_nlist);
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adata(abfd).page_size = 1; /* Not applicable. */
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adata(abfd).segment_size = 1; /* Not applicable. */
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adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
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return abfd->xvec;
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}
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struct bout_data_struct {
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struct aoutdata a;
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struct internal_exec e;
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};
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static boolean
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aout_adobe_mkobject (abfd)
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bfd *abfd;
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{
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struct bout_data_struct *rawptr;
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rawptr = (struct bout_data_struct *) bfd_zalloc (abfd, sizeof (struct bout_data_struct));
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if (rawptr == NULL)
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return false;
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abfd->tdata.bout_data = rawptr;
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exec_hdr (abfd) = &rawptr->e;
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adata(abfd).reloc_entry_size = sizeof (struct reloc_std_external);
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adata(abfd).symbol_entry_size = sizeof (struct external_nlist);
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adata(abfd).page_size = 1; /* Not applicable. */
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adata(abfd).segment_size = 1; /* Not applicable. */
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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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static boolean
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aout_adobe_write_object_contents (abfd)
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bfd *abfd;
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{
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struct external_exec swapped_hdr;
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static struct external_segdesc sentinel[1]; /* Initialized to zero */
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asection *sect;
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exec_hdr (abfd)->a_info = ZMAGIC;
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/* Calculate text size as total of text sections, etc. */
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exec_hdr (abfd)->a_text = 0;
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exec_hdr (abfd)->a_data = 0;
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exec_hdr (abfd)->a_bss = 0;
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exec_hdr (abfd)->a_trsize = 0;
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exec_hdr (abfd)->a_drsize = 0;
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for (sect = abfd->sections; sect; sect = sect->next) {
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if (sect->flags & SEC_CODE) {
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exec_hdr (abfd)->a_text += sect->_raw_size;
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exec_hdr (abfd)->a_trsize += sect->reloc_count *
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sizeof (struct reloc_std_external);
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} else if (sect->flags & SEC_DATA) {
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exec_hdr (abfd)->a_data += sect->_raw_size;
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exec_hdr (abfd)->a_drsize += sect->reloc_count *
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sizeof (struct reloc_std_external);
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} else if (sect->flags & SEC_ALLOC && !(sect->flags & SEC_LOAD)) {
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exec_hdr (abfd)->a_bss += sect->_raw_size;
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}
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}
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exec_hdr (abfd)->a_syms = bfd_get_symcount (abfd)
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* sizeof (struct external_nlist);
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exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
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aout_adobe_swap_exec_header_out (abfd, exec_hdr (abfd), &swapped_hdr);
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if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
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|| (bfd_write ((PTR) &swapped_hdr, 1, EXEC_BYTES_SIZE, abfd)
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!= EXEC_BYTES_SIZE))
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return false;
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/* Now write out the section information. Text first, data next, rest
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afterward. */
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for (sect = abfd->sections; sect; sect = sect->next) {
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if (sect->flags & SEC_CODE) {
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aout_adobe_write_section (abfd, sect);
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}
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}
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for (sect = abfd->sections; sect; sect = sect->next) {
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if (sect->flags & SEC_DATA) {
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aout_adobe_write_section (abfd, sect);
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}
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}
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for (sect = abfd->sections; sect; sect = sect->next) {
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if (!(sect->flags & (SEC_CODE|SEC_DATA))) {
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aout_adobe_write_section (abfd, sect);
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}
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}
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/* Write final `sentinel` section header (with type of 0). */
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if (bfd_write ((PTR) sentinel, 1, sizeof (*sentinel), abfd)
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!= sizeof (*sentinel))
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return false;
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/* Now write out reloc info, followed by syms and strings */
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if (bfd_get_symcount (abfd) != 0)
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{
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if (bfd_seek (abfd, (file_ptr)(N_SYMOFF(*exec_hdr(abfd))), SEEK_SET)
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!= 0)
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return false;
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if (! aout_32_write_syms (abfd))
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return false;
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if (bfd_seek (abfd, (file_ptr)(N_TRELOFF(*exec_hdr(abfd))), SEEK_SET)
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!= 0)
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return false;
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for (sect = abfd->sections; sect; sect = sect->next) {
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if (sect->flags & SEC_CODE) {
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if (!aout_32_squirt_out_relocs (abfd, sect))
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return false;
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}
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}
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if (bfd_seek (abfd, (file_ptr)(N_DRELOFF(*exec_hdr(abfd))), SEEK_SET)
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!= 0)
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return false;
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for (sect = abfd->sections; sect; sect = sect->next) {
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if (sect->flags & SEC_DATA) {
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if (!aout_32_squirt_out_relocs (abfd, sect))
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return false;
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}
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}
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}
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return true;
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}
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static void
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aout_adobe_write_section (abfd, sect)
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bfd *abfd;
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sec_ptr sect;
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{
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/* FIXME XXX */
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}
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static boolean
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aout_adobe_set_section_contents (abfd, section, location, offset, count)
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|||
|
bfd *abfd;
|
|||
|
asection *section;
|
|||
|
PTR location;
|
|||
|
file_ptr offset;
|
|||
|
bfd_size_type count;
|
|||
|
{
|
|||
|
file_ptr section_start;
|
|||
|
sec_ptr sect;
|
|||
|
|
|||
|
if (abfd->output_has_begun == false) { /* set by bfd.c handler */
|
|||
|
|
|||
|
/* Assign file offsets to sections. Text sections are first, and
|
|||
|
are contiguous. Then data sections. Everything else at the end. */
|
|||
|
|
|||
|
section_start = N_TXTOFF (ignore<-->me);
|
|||
|
|
|||
|
for (sect = abfd->sections; sect; sect = sect->next) {
|
|||
|
if (sect->flags & SEC_CODE) {
|
|||
|
sect->filepos = section_start;
|
|||
|
/* FIXME: Round to alignment */
|
|||
|
section_start += sect->_raw_size;
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
for (sect = abfd->sections; sect; sect = sect->next) {
|
|||
|
if (sect->flags & SEC_DATA) {
|
|||
|
sect->filepos = section_start;
|
|||
|
/* FIXME: Round to alignment */
|
|||
|
section_start += sect->_raw_size;
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
for (sect = abfd->sections; sect; sect = sect->next) {
|
|||
|
if (sect->flags & SEC_HAS_CONTENTS &&
|
|||
|
!(sect->flags & (SEC_CODE|SEC_DATA))) {
|
|||
|
sect->filepos = section_start;
|
|||
|
/* FIXME: Round to alignment */
|
|||
|
section_start += sect->_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;
|
|||
|
}
|
|||
|
|
|||
|
static boolean
|
|||
|
aout_adobe_set_arch_mach (abfd, arch, machine)
|
|||
|
bfd *abfd;
|
|||
|
enum bfd_architecture arch;
|
|||
|
unsigned long machine;
|
|||
|
{
|
|||
|
if (! bfd_default_set_arch_mach (abfd, arch, machine))
|
|||
|
return false;
|
|||
|
|
|||
|
if (arch == bfd_arch_unknown
|
|||
|
|| arch == bfd_arch_m68k)
|
|||
|
return true;
|
|||
|
|
|||
|
return false;
|
|||
|
}
|
|||
|
|
|||
|
static int
|
|||
|
aout_adobe_sizeof_headers (ignore_abfd, ignore)
|
|||
|
bfd *ignore_abfd;
|
|||
|
boolean ignore;
|
|||
|
{
|
|||
|
return sizeof(struct internal_exec);
|
|||
|
}
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
/* Build the transfer vector for Adobe A.Out files. */
|
|||
|
|
|||
|
#define aout_32_close_and_cleanup aout_32_bfd_free_cached_info
|
|||
|
|
|||
|
#define aout_32_bfd_make_debug_symbol \
|
|||
|
((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
|
|||
|
|
|||
|
#define aout_32_bfd_reloc_type_lookup \
|
|||
|
((reloc_howto_type *(*) \
|
|||
|
PARAMS ((bfd *, bfd_reloc_code_real_type))) bfd_nullvoidptr)
|
|||
|
|
|||
|
#define aout_32_set_arch_mach aout_adobe_set_arch_mach
|
|||
|
#define aout_32_set_section_contents aout_adobe_set_section_contents
|
|||
|
|
|||
|
#define aout_32_sizeof_headers aout_adobe_sizeof_headers
|
|||
|
#define aout_32_bfd_get_relocated_section_contents \
|
|||
|
bfd_generic_get_relocated_section_contents
|
|||
|
#define aout_32_get_section_contents_in_window _bfd_generic_get_section_contents_in_window
|
|||
|
#define aout_32_bfd_relax_section bfd_generic_relax_section
|
|||
|
#define aout_32_bfd_gc_sections bfd_generic_gc_sections
|
|||
|
#define aout_32_bfd_link_hash_table_create \
|
|||
|
_bfd_generic_link_hash_table_create
|
|||
|
#define aout_32_bfd_link_add_symbols _bfd_generic_link_add_symbols
|
|||
|
#define aout_32_bfd_final_link _bfd_generic_final_link
|
|||
|
#define aout_32_bfd_link_split_section _bfd_generic_link_split_section
|
|||
|
|
|||
|
const bfd_target a_out_adobe_vec =
|
|||
|
{
|
|||
|
"a.out.adobe", /* name */
|
|||
|
bfd_target_aout_flavour,
|
|||
|
BFD_ENDIAN_BIG, /* data byte order is unknown (big assumed) */
|
|||
|
BFD_ENDIAN_BIG, /* hdr byte order is big */
|
|||
|
(HAS_RELOC | EXEC_P | /* object flags */
|
|||
|
HAS_LINENO | HAS_DEBUG |
|
|||
|
HAS_SYMS | HAS_LOCALS | WP_TEXT ),
|
|||
|
/* section flags */
|
|||
|
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_DATA | SEC_RELOC),
|
|||
|
'_', /* symbol leading char */
|
|||
|
' ', /* ar_pad_char */
|
|||
|
16, /* ar_max_namelen */
|
|||
|
|
|||
|
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, aout_adobe_object_p, /* bfd_check_format */
|
|||
|
bfd_generic_archive_p, _bfd_dummy_target},
|
|||
|
{bfd_false, aout_adobe_mkobject, /* bfd_set_format */
|
|||
|
_bfd_generic_mkarchive, bfd_false},
|
|||
|
{bfd_false, aout_adobe_write_object_contents, /* 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 (aout_32),
|
|||
|
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
|||
|
|
|||
|
(PTR) 0
|
|||
|
};
|