c3eb25fc25
coff-h8300.c, coff-i386.c, coff-i960.c, coff-m68k.c, coff-m88k.c, coff-mips.c, coff-rs6000.c, cpu-h300.c, elf.c, i386aout.c, newos3.c, stab-syms.c, syms.c: All these files have had their #includes altered to point to the new places.
328 lines
11 KiB
C
328 lines
11 KiB
C
/* BFD back-end for a.out files encapsulated with COFF headers.
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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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/* THIS MODULE IS NOT FINISHED. IT PROBABLY DOESN'T EVEN COMPILE. */
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#if 0
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#define PAGE_SIZE 4096
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#define SEGMENT_SIZE PAGE_SIZE
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#define TEXT_START_ADDR 0
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#define ARCH 32
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#define BYTES_IN_WORD 4
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#endif
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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 "aout64.h"
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/**From: bothner@cs.wisc.edu***********************************************/
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#undef N_TXTOFF
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#define N_TXTOFF(x) ( (N_MAGIC((x)) == ZMAGIC) ? PAGE_SIZE : EXEC_BYTES_SIZE)
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/**************************************************************************/
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#include "aout/stab_gnu.h"
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#include "aout/ar.h"
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#include "libaout.h" /* BFD a.out internal data structures */
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bfd_target *encap_callback ();
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bfd_target *
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DEFUN(encap_object_p,(abfd),
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bfd *abfd)
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{
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unsigned char magicbuf[4]; /* Raw bytes of magic number from file */
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unsigned long magic; /* Swapped magic number */
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short coff_magic;
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struct external_exec exec_bytes;
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struct internal_exec exec;
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bfd_error = system_call_error;
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if (bfd_read ((PTR)magicbuf, 1, sizeof (magicbuf), abfd) !=
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sizeof (magicbuf))
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return 0;
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coff_magic = bfd_h_get_16 (abfd, magicbuf);
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if (coff_magic != COFF_MAGIC)
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return 0; /* Not an encap coff file */
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__header_offset_temp==COFF_MAGIC ? sizeof(struct coffheader) : 0)
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(fseek ((f), HEADER_OFFSET((f)), 1))
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magic = bfd_h_get_32 (abfd, magicbuf);
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if (N_BADMAG (*((struct internal_exec *) &magic))) return 0;
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struct external_exec exec_bytes;
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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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NAME(aout,swap_exec_header_in)(abfd, &exec_bytes, &exec);
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return aout_32_some_aout_object_p (abfd, &exec, encap_callback);
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}
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/* Finish up the reading of a encapsulated-coff a.out file header */
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bfd_target *
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DEFUN(encap_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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WORK_OUT_FILE_POSITIONS(abfd, execp) ;
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/* If we have a coff header, it can give us better values for
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text_start and exec_data_start. This is particularly useful
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for remote debugging of embedded systems. */
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if (N_FLAGS(exec_aouthdr) & N_FLAGS_COFF_ENCAPSULATE)
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{
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struct coffheader ch;
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int val;
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val = lseek (execchan, -(sizeof (AOUTHDR) + sizeof (ch)), 1);
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if (val == -1)
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perror_with_name (filename);
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val = myread (execchan, &ch, sizeof (ch));
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if (val < 0)
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perror_with_name (filename);
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text_start = ch.text_start;
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exec_data_start = ch.data_start;
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} else
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{
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text_start =
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IS_OBJECT_FILE (exec_aouthdr) ? 0 : N_TXTADDR (exec_aouthdr);
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exec_data_start = IS_OBJECT_FILE (exec_aouthdr)
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? exec_aouthdr.a_text : N_DATADDR (exec_aouthdr);
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}
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/* Determine the architecture and machine type of the object file. */
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bfd_default_set_arch_mach(abfd, bfd_arch_m68k, 0); /* FIXME */
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return abfd->xvec;
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}
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/* Write an object file in Encapsulated COFF format.
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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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boolean
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DEFUN(encap_write_object_contents,(abfd),
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bfd *abfd)
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{
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bfd_size_type data_pad = 0;
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struct external_exec exec_bytes;
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struct internal_exec *execp = exec_hdr (abfd);
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/****** FIXME: Fragments from the old GNU LD program for dealing with
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encap coff. */
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struct coffheader coffheader;
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int need_coff_header;
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/* Determine whether to count the header as part of
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the text size, and initialize the text size accordingly.
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This depends on the kind of system and on the output format selected. */
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N_SET_MAGIC (outheader, magic);
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#ifdef INITIALIZE_HEADER
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INITIALIZE_HEADER;
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#endif
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text_size = sizeof (struct exec);
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#ifdef COFF_ENCAPSULATE
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if (relocatable_output == 0 && file_table[0].just_syms_flag == 0)
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{
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need_coff_header = 1;
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/* set this flag now, since it will change the values of N_TXTOFF, etc */
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N_SET_FLAGS (outheader, N_FLAGS_COFF_ENCAPSULATE);
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text_size += sizeof (struct coffheader);
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}
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#endif
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#ifdef COFF_ENCAPSULATE
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if (need_coff_header)
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{
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/* We are encapsulating BSD format within COFF format. */
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struct coffscn *tp, *dp, *bp;
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tp = &coffheader.scns[0];
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dp = &coffheader.scns[1];
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bp = &coffheader.scns[2];
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strcpy (tp->s_name, ".text");
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tp->s_paddr = text_start;
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tp->s_vaddr = text_start;
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tp->s_size = text_size;
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tp->s_scnptr = sizeof (struct coffheader) + sizeof (struct exec);
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tp->s_relptr = 0;
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tp->s_lnnoptr = 0;
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tp->s_nreloc = 0;
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tp->s_nlnno = 0;
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tp->s_flags = 0x20;
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strcpy (dp->s_name, ".data");
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dp->s_paddr = data_start;
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dp->s_vaddr = data_start;
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dp->s_size = data_size;
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dp->s_scnptr = tp->s_scnptr + tp->s_size;
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dp->s_relptr = 0;
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dp->s_lnnoptr = 0;
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dp->s_nreloc = 0;
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dp->s_nlnno = 0;
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dp->s_flags = 0x40;
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strcpy (bp->s_name, ".bss");
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bp->s_paddr = dp->s_vaddr + dp->s_size;
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bp->s_vaddr = bp->s_paddr;
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bp->s_size = bss_size;
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bp->s_scnptr = 0;
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bp->s_relptr = 0;
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bp->s_lnnoptr = 0;
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bp->s_nreloc = 0;
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bp->s_nlnno = 0;
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bp->s_flags = 0x80;
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coffheader.f_magic = COFF_MAGIC;
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coffheader.f_nscns = 3;
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/* store an unlikely time so programs can
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* tell that there is a bsd header
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*/
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coffheader.f_timdat = 1;
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coffheader.f_symptr = 0;
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coffheader.f_nsyms = 0;
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coffheader.f_opthdr = 28;
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coffheader.f_flags = 0x103;
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/* aouthdr */
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coffheader.magic = ZMAGIC;
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coffheader.vstamp = 0;
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coffheader.tsize = tp->s_size;
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coffheader.dsize = dp->s_size;
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coffheader.bsize = bp->s_size;
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coffheader.entry = outheader.a_entry;
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coffheader.text_start = tp->s_vaddr;
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coffheader.data_start = dp->s_vaddr;
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}
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#endif
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#ifdef COFF_ENCAPSULATE
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if (need_coff_header)
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mywrite (&coffheader, sizeof coffheader, 1, outdesc);
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#endif
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#ifndef COFF_ENCAPSULATE
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padfile (N_TXTOFF (outheader) - sizeof outheader, outdesc);
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#endif
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text_size -= N_TXTOFF (outheader);
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WRITE_HEADERS(abfd, execp);
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return true;
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}
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/* Transfer vectors for Encapsulated-(aout-in)-coff */
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/* We use BFD generic archive files. */
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#define newsos_openr_next_archived_file bfd_generic_openr_next_archived_file
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#define newsos_generic_stat_arch_elt bfd_generic_stat_arch_elt
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#define newsos_slurp_armap bfd_slurp_bsd_armap
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#define newsos_slurp_extended_name_table bfd_true
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#define newsos_write_armap bsd_write_armap
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#define newsos_truncate_arname bfd_bsd_truncate_arname
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/* We don't support core files yet. FIXME. */
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#define newsos_core_file_failing_command _bfd_dummy_core_file_failing_command
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#define newsos_core_file_failing_signal _bfd_dummy_core_file_failing_signal
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#define newsos_core_file_matches_executable_p \
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_bfd_dummy_core_file_matches_executable_p
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#define newsos_core_file_p _bfd_dummy_target
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#define newsos_bfd_debug_info_start bfd_void
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#define newsos_bfd_debug_info_end bfd_void
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#define newsos_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
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#define newsos_mkobject aout_32_mkobject
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#define newsos_close_and_cleanup aout_32_close_and_cleanup
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#define newsos_set_section_contents aout_32_set_section_contents
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#define newsos_get_section_contents aout_32_get_section_contents
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#define newsos_new_section_hook aout_32_new_section_hook
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#define newsos_get_symtab_upper_bound aout_32_get_symtab_upper_bound
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#define newsos_get_symtab aout_32_get_symtab
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#define newsos_get_reloc_upper_bound aout_32_get_reloc_upper_bound
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#define newsos_canonicalize_reloc aout_32_canonicalize_reloc
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#define newsos_make_empty_symbol aout_32_make_empty_symbol
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#define newsos_print_symbol aout_32_print_symbol
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#define newsos_get_lineno aout_32_get_lineno
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#define newsos_set_arch_mach aout_32_set_arch_mach
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#define newsos_find_nearest_line aout_32_find_nearest_line
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#define newsos_sizeof_headers aout_32_sizeof_headers
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/* We define our own versions of these routines. */
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bfd_target encap_big_vec = /* "Encapsulated coff": a.out with COFF header prefix */
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{
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"a.out-encap", /* name */
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bfd_target_aout_flavour,
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true, /* target byte order */
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true, /* target headers byte order */
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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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' ', /* ar_pad_char */
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16, /* ar_max_namelen */
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1, /* minimum alignment */
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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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{_bfd_dummy_target, newsos3_object_p, /* bfd_check_format */
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bfd_generic_archive_p, newsos_core_file_p},
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{bfd_false, newsos_mkobject, /* bfd_set_format */
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_bfd_generic_mkarchive, bfd_false},
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{bfd_false, newsos3_write_object_contents, /* bfd_write_contents */
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_bfd_write_archive_contents, bfd_false},
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JUMP_TABLE(newsos)
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};
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/* Little-endian "encapsulated coff": a.out with COFF header prefix */
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bfd_target encap_little_vec =
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{
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"a.out-encap-little", /* name */
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bfd_target_aout_flavour,
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false, /* target byte order */
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false, /* target headers byte order */
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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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' ', /* ar_pad_char */
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16, /* ar_max_namelen */
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1, /* minimum alignment */
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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_putb16, /* hdrs */
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{_bfd_dummy_target, newsos3_object_p, /* bfd_check_format */
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bfd_generic_archive_p, newsos_core_file_p},
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{bfd_false, newsos_mkobject, /* bfd_set_format */
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_bfd_generic_mkarchive, bfd_false},
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{bfd_false, newsos3_write_object_contents, /* bfd_write_contents */
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_bfd_write_archive_contents, bfd_false},
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JUMP_TABLE(newsos)
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};
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