1a602d6e61
choose_reloc_size. (sunos4_write_object_contents) now calls choose_reloc_size so outputs relocs correctly, also calculates the size of the sections correctly. * aout.c: (look in the rrgs I hate VI) ~ ~ ~ ~
627 lines
18 KiB
C
627 lines
18 KiB
C
/* BFD backend for sunos binaries */
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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 Diddler.
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BFD 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 1, or (at your option)
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any later version.
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BFD 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 BFD; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* $Id$ */
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#include <ansidecl.h>
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#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
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#include "a.out.sun4.h"
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#include "a.out.gnu.h"
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#include "stab.gnu.h"
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#include "ar.h"
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#include "liba.out.h" /* BFD a.out internal data structures */
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void (*bfd_error_trap)();
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static bfd_target *sunos4_callback ();
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/*SUPPRESS558*/
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/*SUPPRESS529*/
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bfd_target *
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sunos4_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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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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magic = bfd_h_getlong (abfd, magicbuf);
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if (N_BADMAG (*((struct exec *) &magic))) return 0;
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return some_aout_object_p (abfd, sunos4_callback);
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}
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/* Determine the size of a relocation entry, based on the architecture */
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static void
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DEFUN(choose_reloc_size,(abfd),
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bfd *abfd)
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{
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switch (abfd->obj_arch) {
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case bfd_arch_sparc:
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case bfd_arch_a29k:
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obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
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break;
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default:
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obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
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break;
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}
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}
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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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static bfd_target *
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sunos4_callback (abfd)
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bfd *abfd;
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{
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struct exec *execp = exec_hdr (abfd);
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/* The virtual memory addresses of the sections */
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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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obj_textsec (abfd)->vma = N_TXTADDR(*execp);
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/* The file offsets of the sections */
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obj_textsec (abfd)->filepos = EXEC_BYTES_SIZE; /*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_str_filepos (abfd) = N_STROFF (*execp);
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obj_sym_filepos (abfd) = N_SYMOFF (*execp);
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/* Determine the architecture and machine type of the object file. */
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switch (N_MACHTYPE (*exec_hdr (abfd))) {
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case M_UNKNOWN:
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abfd->obj_arch = bfd_arch_unknown;
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abfd->obj_machine = 0;
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break;
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case M_68010:
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abfd->obj_arch = bfd_arch_m68k;
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abfd->obj_machine = 68010;
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break;
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case M_68020:
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abfd->obj_arch = bfd_arch_m68k;
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abfd->obj_machine = 68020;
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break;
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case M_SPARC:
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abfd->obj_arch = bfd_arch_sparc;
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abfd->obj_machine = 0;
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break;
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case M_386:
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abfd->obj_arch = bfd_arch_i386;
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abfd->obj_machine = 0;
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break;
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case M_29K:
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abfd->obj_arch = bfd_arch_a29k;
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abfd->obj_machine = 0;
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break;
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default:
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abfd->obj_arch = bfd_arch_obscure;
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abfd->obj_machine = 0;
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break;
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}
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choose_reloc_size(abfd);
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return abfd->xvec;
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}
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boolean
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sunos4_mkobject (abfd)
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bfd *abfd;
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{
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char *rawptr;
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bfd_error = system_call_error;
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/* Use an intermediate variable for clarity */
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rawptr = bfd_zalloc (abfd, sizeof (struct aoutdata) + sizeof (struct exec));
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if (rawptr == NULL) {
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bfd_error = no_memory;
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return false;
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}
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set_tdata (abfd, (struct aoutdata *) rawptr);
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exec_hdr (abfd) = (struct exec *) (rawptr + sizeof (struct aoutdata));
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/* For simplicity's sake we just make all the sections right here. */
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obj_textsec (abfd) = (asection *)NULL;
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obj_datasec (abfd) = (asection *)NULL;
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obj_bsssec (abfd) = (asection *)NULL;
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bfd_make_section (abfd, ".text");
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bfd_make_section (abfd, ".data");
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bfd_make_section (abfd, ".bss");
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return true;
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}
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/* Keep track of machine architecture and machine type for a.out's.
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Return the machine_type for a particular arch&machine, or M_UNKNOWN
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if that exact arch&machine can't be represented in a.out format.
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If the architecture is understood, machine type 0 (default) should
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always be understood. */
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static enum machine_type
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aout_machine_type (arch, machine)
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enum bfd_architecture arch;
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unsigned long machine;
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{
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enum machine_type arch_flags;
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arch_flags = M_UNKNOWN;
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switch (arch) {
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case bfd_arch_sparc:
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if (machine == 0) arch_flags = M_SPARC;
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break;
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case bfd_arch_m68k:
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switch (machine) {
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case 0: arch_flags = M_68010; break;
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case 68000: arch_flags = M_UNKNOWN; break;
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case 68010: arch_flags = M_68010; break;
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case 68020: arch_flags = M_68020; break;
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default: arch_flags = M_UNKNOWN; break;
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}
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break;
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case bfd_arch_i386:
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if (machine == 0) arch_flags = M_386;
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break;
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case bfd_arch_a29k:
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if (machine == 0) arch_flags = M_29K;
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break;
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default:
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arch_flags = M_UNKNOWN;
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break;
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}
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return arch_flags;
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}
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/* Write an object file in SunOS 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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sunos4_write_object_contents (abfd)
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bfd *abfd;
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{
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size_t data_pad = 0;
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unsigned char exec_bytes[EXEC_BYTES_SIZE];
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struct exec *execp = exec_hdr (abfd);
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execp->a_text = obj_textsec (abfd)->size;
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/* Magic number, maestro, please! */
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switch (bfd_get_architecture(abfd)) {
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case bfd_arch_m68k:
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switch (bfd_get_machine(abfd)) {
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case 68010:
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N_SET_MACHTYPE(*execp, M_68010);
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break;
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default:
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case 68020:
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N_SET_MACHTYPE(*execp, M_68020);
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break;
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}
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break;
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case bfd_arch_sparc:
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N_SET_MACHTYPE(*execp, M_SPARC);
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break;
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case bfd_arch_i386:
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N_SET_MACHTYPE(*execp, M_386);
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break;
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case bfd_arch_a29k:
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N_SET_MACHTYPE(*execp, M_29K);
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break;
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default:
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N_SET_MACHTYPE(*execp, M_UNKNOWN);
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}
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choose_reloc_size(abfd);
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N_SET_MAGIC (*execp, OMAGIC);
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if (abfd->flags & D_PAGED) {
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/* This is not strictly true, but will probably do for the default
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case. FIXME.
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*/
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execp->a_text = obj_textsec (abfd)->size + EXEC_BYTES_SIZE;
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N_SET_MAGIC (*execp, ZMAGIC);
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} else if (abfd->flags & WP_TEXT) {
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N_SET_MAGIC (*execp, NMAGIC);
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}
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N_SET_FLAGS (*execp, 0x1); /* copied from ld.c; who the hell knows? */
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if (abfd->flags & D_PAGED)
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{
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data_pad = ((obj_datasec(abfd)->size + PAGE_SIZE -1)
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& (- PAGE_SIZE)) - obj_datasec(abfd)->size;
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if (data_pad > obj_bsssec(abfd)->size)
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execp->a_bss = 0;
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else
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execp->a_bss = obj_bsssec(abfd)->size - data_pad;
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execp->a_data = obj_datasec(abfd)->size + data_pad;
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}
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else {
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execp->a_data = obj_datasec (abfd)->size;
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execp->a_bss = obj_bsssec (abfd)->size;
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}
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execp->a_syms = bfd_get_symcount (abfd) * sizeof (struct nlist);
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execp->a_entry = bfd_get_start_address (abfd);
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execp->a_trsize = ((obj_textsec (abfd)->reloc_count) *
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obj_reloc_entry_size (abfd));
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execp->a_drsize = ((obj_datasec (abfd)->reloc_count) *
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obj_reloc_entry_size (abfd));
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bfd_aout_swap_exec_header_out (abfd, execp, exec_bytes);
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bfd_seek (abfd, 0L, false);
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bfd_write ((PTR) exec_bytes, 1, EXEC_BYTES_SIZE, abfd);
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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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bfd_seek (abfd,
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(long)(N_SYMOFF(*execp)), false);
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aout_write_syms (abfd);
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bfd_seek (abfd, (long)(N_TRELOFF(*execp)), false);
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if (!aout_squirt_out_relocs (abfd, obj_textsec (abfd))) return false;
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bfd_seek (abfd, (long)(N_DRELOFF(*execp)), false);
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if (!aout_squirt_out_relocs (abfd, obj_datasec (abfd))) return false;
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}
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return true;
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}
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/* core files */
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#define CORE_MAGIC 0x080456
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#define CORE_NAMELEN 16
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/* The core structure is taken from the Sun documentation.
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Unfortunately, they don't document the FPA structure, or at least I
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can't find it easily. Fortunately the core header contains its own
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length. So this shouldn't cause problems, except for c_ucode, which
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so far we don't use but is easy to find with a little arithmetic. */
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/* But the reg structure can be gotten from the SPARC processor handbook.
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This really should be in a GNU include file though so that gdb can use
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the same info. */
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struct regs {
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int r_psr;
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int r_pc;
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int r_npc;
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int r_y;
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int r_g1;
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int r_g2;
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int r_g3;
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int r_g4;
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int r_g5;
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int r_g6;
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int r_g7;
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int r_o0;
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int r_o1;
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int r_o2;
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int r_o3;
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int r_o4;
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int r_o5;
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int r_o6;
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int r_o7;
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};
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/* Taken from Sun documentation: */
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/* FIXME: It's worse than we expect. This struct contains TWO substructs
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neither of whose size we know, WITH STUFF IN BETWEEN THEM! We can't
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even portably access the stuff in between! */
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struct core {
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int c_magic; /* Corefile magic number */
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int c_len; /* Sizeof (struct core) */
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struct regs c_regs; /* General purpose registers -- MACHDEP SIZE */
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struct exec c_aouthdr; /* A.out header */
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int c_signo; /* Killing signal, if any */
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int c_tsize; /* Text size (bytes) */
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int c_dsize; /* Data size (bytes) */
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int c_ssize; /* Stack size (bytes) */
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char c_cmdname[CORE_NAMELEN + 1]; /* Command name */
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double fp_stuff[1]; /* external FPU state (size unknown by us) */
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/* The type "double" is critical here, for alignment.
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SunOS declares a struct here, but the struct's alignment
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is double since it contains doubles. */
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int c_ucode; /* Exception no. from u_code */
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/* (this member is not accessible by name since we don't
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portably know the size of fp_stuff.) */
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};
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/* Supposedly the user stack grows downward from the bottom of kernel memory.
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Presuming that this remains true, this definition will work. */
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#define USRSTACK (-(128*1024*1024))
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PROTO (static void, swapcore, (bfd *abfd, struct core *core));
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/* need this cast b/c ptr is really void * */
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#define core_hdr(bfd) (((struct suncordata *) (bfd->tdata))->hdr)
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#define core_datasec(bfd) (((struct suncordata *) ((bfd)->tdata))->data_section)
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#define core_stacksec(bfd) (((struct suncordata*)((bfd)->tdata))->stack_section)
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#define core_regsec(bfd) (((struct suncordata *) ((bfd)->tdata))->reg_section)
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#define core_reg2sec(bfd) (((struct suncordata *) ((bfd)->tdata))->reg2_section)
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/* These are stored in the bfd's tdata */
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struct suncordata {
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struct core *hdr; /* core file header */
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asection *data_section;
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asection *stack_section;
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asection *reg_section;
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asection *reg2_section;
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};
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bfd_target *
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sunos4_core_file_p (abfd)
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bfd *abfd;
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{
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unsigned char longbuf[4]; /* Raw bytes of various header fields */
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int core_size;
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int core_mag;
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struct core *core;
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char *rawptr;
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bfd_error = system_call_error;
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if (bfd_read ((PTR)longbuf, 1, sizeof (longbuf), abfd) !=
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sizeof (longbuf))
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return 0;
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core_mag = bfd_h_getlong (abfd, longbuf);
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if (core_mag != CORE_MAGIC) return 0;
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/* SunOS core headers can vary in length; second word is size; */
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if (bfd_read ((PTR)longbuf, 1, sizeof (longbuf), abfd) !=
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sizeof (longbuf))
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return 0;
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core_size = bfd_h_getlong (abfd, longbuf);
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/* Sanity check */
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if (core_size > 20000)
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return 0;
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if (bfd_seek (abfd, 0L, false) < 0) return 0;
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rawptr = bfd_zalloc (abfd, core_size + sizeof (struct suncordata));
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if (rawptr == NULL) {
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bfd_error = no_memory;
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return 0;
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}
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core = (struct core *) (rawptr + sizeof (struct suncordata));
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if ((bfd_read ((PTR) core, 1, core_size, abfd)) != core_size) {
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bfd_error = system_call_error;
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bfd_release (abfd, rawptr);
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return 0;
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}
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swapcore (abfd, core);
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set_tdata (abfd, ((struct suncordata *) rawptr));
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core_hdr (abfd) = core;
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/* create the sections. This is raunchy, but bfd_close wants to reclaim
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them */
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core_stacksec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
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if (core_stacksec (abfd) == NULL) {
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loser:
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bfd_error = no_memory;
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bfd_release (abfd, rawptr);
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return 0;
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}
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core_datasec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
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if (core_datasec (abfd) == NULL) {
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loser1:
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bfd_release (abfd, core_stacksec (abfd));
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goto loser;
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}
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core_regsec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
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if (core_regsec (abfd) == NULL) {
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loser2:
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bfd_release (abfd, core_datasec (abfd));
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goto loser1;
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}
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core_reg2sec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
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if (core_reg2sec (abfd) == NULL) {
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bfd_release (abfd, core_regsec (abfd));
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goto loser2;
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}
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core_stacksec (abfd)->name = ".stack";
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core_datasec (abfd)->name = ".data";
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core_regsec (abfd)->name = ".reg";
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core_reg2sec (abfd)->name = ".reg2";
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core_stacksec (abfd)->flags = SEC_ALLOC + SEC_LOAD;
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core_datasec (abfd)->flags = SEC_ALLOC + SEC_LOAD;
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core_regsec (abfd)->flags = SEC_ALLOC;
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core_reg2sec (abfd)->flags = SEC_ALLOC;
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core_stacksec (abfd)->size = core->c_ssize;
|
||
core_datasec (abfd)->size = core->c_dsize;
|
||
core_regsec (abfd)->size = (sizeof core->c_regs);
|
||
/* Float regs take up end of struct, except c_ucode. */
|
||
core_reg2sec (abfd)->size = core_size - (sizeof core->c_ucode) -
|
||
(file_ptr)(((struct core *)0)->fp_stuff);
|
||
|
||
core_stacksec (abfd)->vma = (USRSTACK - core->c_ssize);
|
||
core_datasec (abfd)->vma = N_DATADDR(core->c_aouthdr);
|
||
core_regsec (abfd)->vma = -1;
|
||
core_reg2sec (abfd)->vma = -1;
|
||
|
||
core_stacksec (abfd)->filepos = core->c_len + core->c_dsize;
|
||
core_datasec (abfd)->filepos = core->c_len;
|
||
/* In file header: */
|
||
core_regsec (abfd)->filepos = (file_ptr)(&((struct core *)0)->c_regs);
|
||
core_reg2sec (abfd)->filepos = (file_ptr)(((struct core *)0)->fp_stuff);
|
||
|
||
/* Align to word at least */
|
||
core_stacksec (abfd)->alignment_power = 2;
|
||
core_datasec (abfd)->alignment_power = 2;
|
||
core_regsec (abfd)->alignment_power = 2;
|
||
core_reg2sec (abfd)->alignment_power = 2;
|
||
|
||
abfd->sections = core_stacksec (abfd);
|
||
core_stacksec (abfd)->next = core_datasec (abfd);
|
||
core_datasec (abfd)->next = core_regsec (abfd);
|
||
core_regsec (abfd)->next = core_reg2sec (abfd);
|
||
|
||
abfd->section_count = 4;
|
||
|
||
return abfd->xvec;
|
||
}
|
||
|
||
char *
|
||
sunos4_core_file_failing_command (abfd)
|
||
bfd *abfd;
|
||
{
|
||
return core_hdr (abfd)->c_cmdname;
|
||
}
|
||
|
||
int
|
||
sunos4_core_file_failing_signal (abfd)
|
||
bfd *abfd;
|
||
{
|
||
return core_hdr (abfd)->c_signo;
|
||
}
|
||
|
||
boolean
|
||
sunos4_core_file_matches_executable_p (core_bfd, exec_bfd)
|
||
bfd *core_bfd, *exec_bfd;
|
||
{
|
||
if (core_bfd->xvec != exec_bfd->xvec) {
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
|
||
return (bcmp ((char *)&core_hdr (core_bfd), (char*) &exec_hdr (exec_bfd),
|
||
sizeof (struct exec)) == 0) ? true : false;
|
||
}
|
||
|
||
/* byte-swap core structure */
|
||
/* FIXME, this needs more work to swap IN a core struct from raw bytes */
|
||
static void
|
||
swapcore (abfd, core)
|
||
bfd *abfd;
|
||
struct core *core;
|
||
{
|
||
unsigned char exec_bytes[EXEC_BYTES_SIZE];
|
||
|
||
core->c_magic = bfd_h_getlong (abfd, (unsigned char *)&core->c_magic);
|
||
core->c_len = bfd_h_getlong (abfd, (unsigned char *)&core->c_len );
|
||
/* Leave integer registers in target byte order. */
|
||
bcopy ((char *)&(core->c_aouthdr), (char *)exec_bytes, EXEC_BYTES_SIZE);
|
||
bfd_aout_swap_exec_header_in (abfd, exec_bytes, &core->c_aouthdr);
|
||
core->c_signo = bfd_h_getlong (abfd, (unsigned char *)&core->c_signo);
|
||
core->c_tsize = bfd_h_getlong (abfd, (unsigned char *)&core->c_tsize);
|
||
core->c_dsize = bfd_h_getlong (abfd, (unsigned char *)&core->c_dsize);
|
||
core->c_ssize = bfd_h_getlong (abfd, (unsigned char *)&core->c_ssize);
|
||
/* Leave FP registers in target byte order. */
|
||
/* Leave "c_ucode" unswapped for now, since we can't find it easily. */
|
||
}
|
||
|
||
/* We use BFD generic archive files. */
|
||
#define aout_openr_next_archived_file bfd_generic_openr_next_archived_file
|
||
#define aout_generic_stat_arch_elt bfd_generic_stat_arch_elt
|
||
#define aout_slurp_armap bfd_slurp_bsd_armap
|
||
#define aout_slurp_extended_name_table bfd_true
|
||
#define aout_write_armap bsd_write_armap
|
||
#define aout_truncate_arname bfd_bsd_truncate_arname
|
||
|
||
/* We use our own core file format. */
|
||
#define aout_core_file_failing_command sunos4_core_file_failing_command
|
||
#define aout_core_file_failing_signal sunos4_core_file_failing_signal
|
||
#define aout_core_file_matches_executable_p \
|
||
sunos4_core_file_matches_executable_p
|
||
|
||
/* We implement these routines ourselves, rather than using the generic
|
||
a.out versions. */
|
||
#define aout_write_object_contents sunos4_write_object_contents
|
||
|
||
bfd_target sunos_big_vec =
|
||
{
|
||
"a.out-sunos-big", /* name */
|
||
bfd_target_aout_flavour_enum,
|
||
true, /* target byte order */
|
||
true, /* target headers byte order */
|
||
(HAS_RELOC | EXEC_P | /* object flags */
|
||
HAS_LINENO | HAS_DEBUG |
|
||
HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
|
||
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
|
||
' ', /* ar_pad_char */
|
||
16, /* ar_max_namelen */
|
||
_do_getblong, _do_putblong, _do_getbshort, _do_putbshort, /* data */
|
||
_do_getblong, _do_putblong, _do_getbshort, _do_putbshort, /* hdrs */
|
||
|
||
{_bfd_dummy_target, sunos4_object_p,
|
||
bfd_generic_archive_p, sunos4_core_file_p},
|
||
{bfd_false, sunos4_mkobject,
|
||
_bfd_generic_mkarchive, bfd_false},
|
||
{bfd_false, sunos4_write_object_contents, /* bfd_write_contents */
|
||
_bfd_write_archive_contents, bfd_false},
|
||
|
||
JUMP_TABLE(aout)
|
||
};
|