-/* BFD backend for local host's a.out binaries */
+/* BFD backend for local host's a.out binaries
+ Copyright (C) 1990-1991 Free Software Foundation, Inc.
+ Written by Cygnus Support. Probably John Gilmore's fault.
-/* Copyright (C) 1990, 1991 Free Software Foundation, Inc.
+This file is part of BFD, the Binary File Descriptor library.
-This file is part of BFD, the Binary File Diddler.
-
-BFD is free software; you can redistribute it and/or modify
+This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 1, or (at your option)
-any later version.
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
-BFD is distributed in the hope that it will be useful,
+This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with BFD; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-#include <ansidecl.h>
-#include <sysdep.h>
#include "bfd.h"
+#include "sysdep.h"
#include "libbfd.h"
-#include <a.out.h>
-#include "liba.out.h" /* BFD a.out internal data structures */
-
-#include "trad-core.h" /* Traditional Unix core files */
-
-void (*bfd_error_trap)();
-
-static bfd_target *host_aout_callback ();
-
-/*SUPPRESS558*/
-/*SUPPRESS529*/
-
-bfd_target *
-host_aout_object_p (abfd)
- bfd *abfd;
-{
- unsigned char magicbuf[4]; /* Raw bytes of magic number from file */
- unsigned long magic; /* Swapped magic number */
-
- bfd_error = system_call_error;
+#define ARCH_SIZE 32
- if (bfd_read ((PTR)magicbuf, 1, sizeof (magicbuf), abfd) !=
- sizeof (magicbuf))
- return 0;
- magic = bfd_h_getlong (abfd, magicbuf);
+/* When porting to a new system, you must supply:
- if (N_BADMAG (*((struct exec *) &magic))) return 0;
+ HOST_PAGE_SIZE (optional)
+ HOST_SEGMENT_SIZE (optional -- defaults to page size)
+ HOST_MACHINE_ARCH (optional)
+ HOST_MACHINE_MACHINE (optional)
+ HOST_TEXT_START_ADDR (optional)
+ HOST_STACK_END_ADDR (not used, except by trad-core ???)
+ HOST_SHORT_HEADER_HACK (optional)
- return some_aout_object_p (abfd, host_aout_callback);
-}
+ in the ./hosts/h-systemname.h file.
-/* Set parameters about this a.out file that are machine-dependent.
- This routine is called from some_aout_object_p just before it returns. */
+ For most of these, you can get by with the values computed
+ by the program aout-gen, which writes the result into aout-params.h. */
-static bfd_target *
-host_aout_callback (abfd)
- bfd *abfd;
-{
- struct exec *execp = exec_hdr (abfd);
+#include "aout-params.h"
- /* The virtual memory addresses of the sections */
- obj_datasec (abfd)->vma = N_DATADDR(*execp);
- obj_bsssec (abfd)->vma = N_BSSADDR(*execp);
- obj_textsec (abfd)->vma = N_TXTADDR(*execp);
-
- /* The file offsets of the sections */
- obj_textsec (abfd)->filepos = N_TXTOFF(*execp);
- obj_datasec (abfd)->filepos = N_DATOFF(*execp);
-
- /* The file offsets of the relocation info */
- obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp);
- obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp);
+#ifdef HOST_PAGE_SIZE
+#define PAGE_SIZE HOST_PAGE_SIZE
+#endif
+#ifdef HOST_SEGMENT_SIZE
+#define SEGMENT_SIZE HOST_SEGMENT_SIZE
+#else
+#define SEGMENT_SIZE PAGE_SIZE
+#endif
+#ifdef HOST_TEXT_START_ADDR
+#define TEXT_START_ADDR HOST_TEXT_START_ADDR
+#endif
+#ifdef HOST_STACK_END_ADDR
+#define STACK_END_ADDR HOST_STACK_END_ADDR
+#endif
+#ifndef N_HEADER_IN_TEXT
+#ifdef HOST_SHORT_HEADER_HACK
+#define N_HEADER_IN_TEXT(x) 1
+#else
+#define N_HEADER_IN_TEXT(x) 0
+#endif
+#endif
- /* The file offsets of the string table and symbol table. */
- obj_str_filepos (abfd) = N_STROFF (*execp);
- obj_sym_filepos (abfd) = N_SYMOFF (*execp);
+#include "libaout.h" /* BFD a.out internal data structures */
+#include "aout/aout64.h"
#ifdef HOST_MACHINE_ARCH
- abfd->obj_arch = HOST_MACHINE_ARCH;
-#endif
#ifdef HOST_MACHINE_MACHINE
- abfd->obj_machine = HOST_MACHINE_MACHINE;
+#define SET_ARCH_MACH(abfd, execp) \
+ bfd_default_set_arch_mach(abfd, HOST_MACHINE_ARCH, HOST_MACHINE_MACHINE)
+#else
+#define SET_ARCH_MACH(abfd, execp) \
+ bfd_default_set_arch_mach(abfd, HOST_MACHINE_ARCH, 0)
#endif
+#endif /* HOST_MACHINE_ARCH */
- return abfd->xvec;
-}
-
-
-boolean
-host_aout_mkobject (abfd)
- bfd *abfd;
-{
- char *rawptr;
-
- bfd_error = system_call_error;
-
- /* Use an intermediate variable for clarity */
- rawptr = bfd_zalloc (abfd, sizeof (struct aoutdata) + sizeof (struct exec));
-
- if (rawptr == NULL) {
- bfd_error = no_memory;
- return false;
- }
-
- set_tdata (abfd, (struct aoutdata *) rawptr);
- exec_hdr (abfd) = (struct exec *) (rawptr + sizeof (struct aoutdata));
-
- /* For simplicity's sake we just make all the sections right here. */
-
- obj_textsec (abfd) = (asection *)NULL;
- obj_datasec (abfd) = (asection *)NULL;
- obj_bsssec (abfd) = (asection *)NULL;
- bfd_make_section (abfd, ".text");
- bfd_make_section (abfd, ".data");
- bfd_make_section (abfd, ".bss");
-
- return true;
-}
-
-/* Write an object file in host a.out format.
- Section contents have already been written. We write the
- file header, symbols, and relocation. */
-
-boolean
-host_aout_write_object_contents (abfd)
- bfd *abfd;
-{
-/* This works because we are on the host system */
-#define EXEC_BYTES_SIZE sizeof (struct exec)
- size_t data_pad = 0;
- unsigned char exec_bytes[EXEC_BYTES_SIZE];
- struct exec *execp = exec_hdr (abfd);
-
- execp->a_text = obj_textsec (abfd)->size;
-
-
- N_SET_MAGIC (*execp, OMAGIC);
- if (abfd->flags & D_PAGED) {
- /* This is not strictly true, but will probably do for the default
- case. FIXME.
- */
-
- execp->a_text = obj_textsec (abfd)->size + EXEC_BYTES_SIZE;
- N_SET_MAGIC (*execp, ZMAGIC);
- } else if (abfd->flags & WP_TEXT) {
- N_SET_MAGIC (*execp, NMAGIC);
- }
- N_SET_FLAGS (*execp, 0x1); /* copied from ld.c; who the hell knows? */
-
- if (abfd->flags & D_PAGED)
- {
- data_pad = ((obj_datasec(abfd)->size + PAGE_SIZE -1)
- & (- PAGE_SIZE)) - obj_datasec(abfd)->size;
-
- if (data_pad > obj_bsssec(abfd)->size)
- execp->a_bss = 0;
- else
- execp->a_bss = obj_bsssec(abfd)->size - data_pad;
- execp->a_data = obj_datasec(abfd)->size + data_pad;
-
- }
- else {
- execp->a_data = obj_datasec (abfd)->size;
- execp->a_bss = obj_bsssec (abfd)->size;
- }
-
- execp->a_syms = bfd_get_symcount (abfd) * sizeof (struct nlist);
- execp->a_entry = bfd_get_start_address (abfd);
-
- execp->a_trsize = ((obj_textsec (abfd)->reloc_count) *
- obj_reloc_entry_size (abfd));
-
- execp->a_drsize = ((obj_datasec (abfd)->reloc_count) *
- obj_reloc_entry_size (abfd));
-
- bfd_aout_swap_exec_header_out (abfd, execp, exec_bytes);
-
- bfd_seek (abfd, 0L, false);
- bfd_write ((PTR) exec_bytes, 1, EXEC_BYTES_SIZE, abfd);
-
- /* Now write out reloc info, followed by syms and strings */
-
- if (bfd_get_symcount (abfd) != 0)
- {
- bfd_seek (abfd,
- (long)(N_SYMOFF(*execp)), false);
-
- aout_write_syms (abfd);
-
- bfd_seek (abfd, (long)(N_TRELOFF(*execp)), false);
-
- if (!aout_squirt_out_relocs (abfd, obj_textsec (abfd))) return false;
- bfd_seek (abfd, (long)(N_DRELOFF(*execp)), false);
-
- if (!aout_squirt_out_relocs (abfd, obj_datasec (abfd))) return false;
- }
- return true;
-}
-\f
-/* 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 traditional Unix core file format. */
-#define aout_core_file_failing_command trad_unix_core_file_failing_command
-#define aout_core_file_failing_signal trad_unix_core_file_failing_signal
-#define aout_core_file_matches_executable_p \
- trad_unix_core_file_matches_executable_p
-
-/* We replace this function */
-#define aout_write_object_contents host_aout_write_object_contents
-
-bfd_target host_aout_big_vec =
-{
- "a.out-host-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, host_aout_object_p,
- bfd_generic_archive_p, trad_unix_core_file_p},
- {bfd_false, host_aout_mkobject,
- _bfd_generic_mkarchive, bfd_false},
- {bfd_false, aout_write_object_contents, /* bfd_write_contents */
- _bfd_write_archive_contents, bfd_false},
-
- JUMP_TABLE(aout)
-};
-
-bfd_target host_aout_little_vec =
-{
- "a.out-host-little", /* name */
- bfd_target_aout_flavour_enum,
- false, /* target byte order */
- false, /* 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_getllong, _do_putllong, _do_getlshort, _do_putlshort, /* data */
- _do_getllong, _do_putllong, _do_getlshort, _do_putlshort, /* hdrs */
-
- {_bfd_dummy_target, host_aout_object_p,
- bfd_generic_archive_p, trad_unix_core_file_p},
- {bfd_false, host_aout_mkobject,
- _bfd_generic_mkarchive, bfd_false},
- {bfd_false, aout_write_object_contents, /* bfd_write_contents */
- _bfd_write_archive_contents, bfd_false},
+#define MY(OP) CAT(host_aout_,OP)
+#define TARGETNAME "a.out"
- JUMP_TABLE(aout)
-};
+#include "aout-target.h"
projects / binutils.git / blobdiff