/* BFD backend for local host's a.out binaries
- Copyright (C) 1990-1991 Free Software Foundation, Inc.
+ Copyright (C) 1990-2021 Free Software Foundation, Inc.
Written by Cygnus Support. Probably John Gilmore's fault.
-This file is part of BFD, the Binary File Descriptor library.
+ This file is part of BFD, the Binary File Descriptor library.
-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 2 of the License, or
-(at your option) any later version.
+ 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 3 of the License, or
+ (at your option) any later version.
-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.
+ 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 this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
-#include "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include "libbfd.h"
-#include <a.out.h>
-#include "libaout.h" /* BFD a.out internal data structures */
-
-#include "trad-core.h" /* Traditional Unix core files */
-
-/*======== This next section is stolen from ../include/a.out.gnu.h
- ======== for all the losing Unix systems that don't provide these
- ======== macros.
+#define ARCH_SIZE 32
- When porting to a new system, you must supply:
+/* When porting to a new system, you must supply:
- HOST_PAGE_SIZE
- HOST_SEGMENT_SIZE
+ HOST_PAGE_SIZE (optional)
+ HOST_SEGMENT_SIZE (optional -- defaults to page size)
HOST_MACHINE_ARCH (optional)
HOST_MACHINE_MACHINE (optional)
- HOST_TEXT_START_ADDR
- HOST_STACK_END_ADDR
-
- in the ../include/h-systemname.h file. */
-
-#define PAGE_SIZE HOST_PAGE_SIZE
-#define SEGMENT_SIZE HOST_SEGMENT_SIZE
-#define TEXT_START_ADDR HOST_TEXT_START_ADDR
-#define STACK_END_ADDR HOST_STACK_END_ADDR
-
-/*======== Stolen section begins below. =================================*/
-
-#define a_info a_magic /* Old traditional Unix */
-
-#define N_MAGIC(exec) ((exec).a_info & 0xffff)
-#define N_SET_MAGIC(exec, magic) \
- ((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff)))
-
-/* Virtual Address of text segment from the a.out file. For OMAGIC,
- (almost always "unlinked .o's" these days), should be zero.
- For linked files, should reflect reality if we know it. */
-
-#ifndef N_TXTADDR
-#define N_TXTADDR(x) (N_MAGIC(x)==OMAGIC? 0 : TEXT_START_ADDR)
-#endif
-
-#ifndef N_BADMAG
-#define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \
- && N_MAGIC(x) != NMAGIC \
- && N_MAGIC(x) != ZMAGIC)
-#endif
-
-/* This complexity is for encapsulated COFF support */
-#ifndef _N_HDROFF
-#define _N_HDROFF(x) (SEGMENT_SIZE - sizeof (struct exec))
-#endif
-
-#ifndef N_TXTOFF
-#define N_TXTOFF(x) (N_MAGIC(x) == ZMAGIC ? \
- _N_HDROFF((x)) + sizeof (struct exec) : \
- sizeof (struct exec))
-#endif
-
-
-#ifndef N_DATOFF
-#define N_DATOFF(x) ( N_TXTOFF(x) + (x).a_text )
-#endif
+ HOST_TEXT_START_ADDR (optional)
+ HOST_STACK_END_ADDR (not used, except by trad-core ???)
+ HOST_BIG_ENDIAN_P (required -- define if big-endian)
-#ifndef N_TRELOFF
-#define N_TRELOFF(x) ( N_DATOFF(x) + (x).a_data )
-#endif
+ in the ./hosts/h-systemname.h file. */
-#ifndef N_DRELOFF
-#define N_DRELOFF(x) ( N_TRELOFF(x) + (x).a_trsize )
+#ifdef TRAD_HEADER
+#include TRAD_HEADER
#endif
-#ifndef N_SYMOFF
-#define N_SYMOFF(x) ( N_DRELOFF(x) + (x).a_drsize )
+#ifdef HOST_PAGE_SIZE
+#define TARGET_PAGE_SIZE HOST_PAGE_SIZE
#endif
-#ifndef N_STROFF
-#define N_STROFF(x) ( N_SYMOFF(x) + (x).a_syms )
+#ifdef HOST_SEGMENT_SIZE
+#define SEGMENT_SIZE HOST_SEGMENT_SIZE
+#else
+#define SEGMENT_SIZE TARGET_PAGE_SIZE
#endif
-/* Address of text segment in memory after it is loaded. */
-#ifndef N_TXTADDR
-#define N_TXTADDR(x) 0
+#ifdef HOST_TEXT_START_ADDR
+#define TEXT_START_ADDR HOST_TEXT_START_ADDR
#endif
-#ifndef N_DATADDR
-#define N_DATADDR(x) \
- (N_MAGIC(x)==OMAGIC? (N_TXTADDR(x)+(x).a_text) \
- : (SEGMENT_SIZE + ((N_TXTADDR(x)+(x).a_text-1) & ~(SEGMENT_SIZE-1))))
+#ifdef HOST_STACK_END_ADDR
+#define STACK_END_ADDR HOST_STACK_END_ADDR
#endif
-/* Address of bss segment in memory after it is loaded. */
-#ifndef N_BSSADDR
-#define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data)
+#ifdef HOST_BIG_ENDIAN_P
+#define TARGET_IS_BIG_ENDIAN_P
+#else
+#undef TARGET_IS_BIG_ENDIAN_P
#endif
-
-static bfd_target *NAME(host_aout,callback) ();
-
-/*SUPPRESS558*/
-/*SUPPRESS529*/
-
-bfd_target *
-DEFUN(NAME(host_aout,object_p), (abfd),
- bfd *abfd)
-{
- unsigned char magicbuf[4]; /* Raw bytes of magic number from file */
- struct external_exec exec_bytes;
- struct internal_exec exec;
-
- if (bfd_read ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd)
- != EXEC_BYTES_SIZE) {
- bfd_error = wrong_format;
- return 0;
- }
-
- exec.a_magic = bfd_h_get_32 (abfd, exec_bytes.a_magic);
-
- if (N_BADMAG (exec)) return 0;
-
- NAME(aout,swap_exec_header_in)(abfd, &exec_bytes, &exec);
- return NAME(aout,some_aout_object_p) (abfd, &exec, NAME(host_aout,callback));
-}
-
-/* Set parameters about this a.out file that are machine-dependent.
- This routine is called from NAME(some_aout_object_p) just before it returns.
- */
-
-static bfd_target *
-DEFUN(NAME(host_aout,callback), (abfd),
- bfd *abfd)
-{
- /* exec_hdr (abfd), a "struct internal_exec *", is just an abstraction,
- as far as the BFD a.out layer cares. We use it as a "struct exec *".
- This routine moves any data from the exec header,
- which is needed by the BFD code, out to places known to BFD. This
- allows the rest of the BFD code to not know or care about the structure
- of exec_hdr (abfd). */
- struct exec *execp = (struct exec *)exec_hdr (abfd);
-
- /* 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);
-
- /* 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
- bfd_default_set_arch_mach(abfd,
- HOST_MACHINE_ARCH,
#ifdef HOST_MACHINE_MACHINE
- HOST_MACHINE_MACHINE
-#else /* not HOST_MACHINE_MACHINE */
- 0
-#endif /* not 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 */
- obj_reloc_entry_size (abfd) = sizeof (struct relocation_info);
- return abfd->xvec;
-}
-
-
-boolean
-DEFUN(NAME(host_aout,mkobject), (abfd),
- bfd *abfd)
-{
- /* This struct is just for allocating two things with one zalloc, so
- they will be freed together, without violating alignment constraints. */
- struct aout_exec {
- struct aoutdata aoutdata;
- struct exec exec;
- } *rawptr;
-
- bfd_error = system_call_error;
-
- /* Use an intermediate variable for clarity */
- rawptr = (struct aout_exec *)bfd_zalloc (abfd, sizeof (struct aout_exec));
-
- if (rawptr == NULL) {
- bfd_error = no_memory;
- return false;
- }
-
- set_tdata (abfd, &rawptr->aoutdata);
- /* exec_hdr (abfd), a "struct internal_exec *", is just an abstraction,
- as far as the BFD a.out layer cares. We use it as a "struct exec *". */
- exec_hdr (abfd) = (struct internal_exec *) &rawptr->exec;
-
- /* 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
-DEFUN(NAME(host_aout,write_object_contents), (abfd),
- bfd *abfd)
-{
-/* This works because we are on the host system */
-#define EXEC_BYTES_SIZE (sizeof (struct exec))
-#define EXTERNAL_NLIST_SIZE (sizeof (struct nlist))
- size_t data_pad = 0;
- unsigned char exec_bytes[EXEC_BYTES_SIZE];
- struct exec *execp = (struct exec *)exec_hdr (abfd);
-
- execp->a_text = obj_textsec (abfd)->size;
-
- WRITE_HEADERS (abfd, execp);
- return true;
-}
-\f
-/* We use BFD generic archive files. */
-#define aout_32_openr_next_archived_file bfd_generic_openr_next_archived_file
-#define aout_32_generic_stat_arch_elt bfd_generic_stat_arch_elt
-#define aout_32_slurp_armap bfd_false
-#define aout_32_slurp_extended_name_table bfd_true
-#define aout_32_write_armap (PROTO (boolean, (*), \
- (bfd *arch, unsigned int elength, struct orl *map, int orl_count, \
- int stridx))) bfd_false
-#define aout_32_truncate_arname bfd_dont_truncate_arname
-
-/* No core file defined here -- configure in trad-core.c separately. */
-#define aout_32_core_file_failing_command bfd_false
-#define aout_32_core_file_failing_signal bfd_false
-#define aout_32_core_file_matches_executable_p bfd_true
-#define some_kinda_core_file_p bfd_false
-
-#define aout_32_bfd_debug_info_start bfd_void
-#define aout_32_bfd_debug_info_end bfd_void
-#define aout_32_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
-
-#define aout_64_openr_next_archived_file aout_32_openr_next_archived_file
-#define aout_64_generic_stat_arch_elt aout_32_generic_stat_arch_elt
-#define aout_64_slurp_armap aout_32_slurp_armap
-#define aout_64_slurp_extended_name_table aout_32_slurp_extended_name_table
-#define aout_64_write_armap aout_32_write_armap
-#define aout_64_truncate_arname aout_32_truncate_arname
-
-#define aout_64_core_file_failing_command aout_32_core_file_failing_command
-#define aout_64_core_file_failing_signal aout_32_core_file_failing_signal
-#define aout_64_core_file_matches_executable_p aout_32_core_file_matches_executable_p
-
-#define aout_64_bfd_debug_info_start aout_32_bfd_debug_info_start
-#define aout_64_bfd_debug_info_end aout_32_bfd_debug_info_end
-#define aout_64_bfd_debug_info_accumulate aout_32_bfd_debug_info_accumulate
-
-
-/* We implement these routines ourselves, rather than using the generic
- a.out versions. */
-#define aout_write_object_contents host_write_object_contents
-
-bfd_target host_aout_big_vec =
- {
- "a.out-host-big",
- bfd_target_aout_flavour,
- 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 */
- 3, /* minimum alignment power */
- _do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* data */
- _do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */
-
- {_bfd_dummy_target, NAME(host_aout,object_p),
- bfd_generic_archive_p, some_kinda_core_file_p},
- {bfd_false, NAME(host_aout,mkobject),
- _bfd_generic_mkarchive, bfd_false},
- {bfd_false, NAME(host_aout,write_object_contents), /* bfd_write_contents */
- _bfd_write_archive_contents, bfd_false},
-
- JUMP_TABLE(JNAME(aout))
-};
+/* Do not "beautify" the CONCAT* macro args. Traditional C will not
+ remove whitespace added here, and thus will fail to concatenate
+ the tokens. */
+#define MY(OP) CONCAT2 (host_aout_,OP)
+#define TARGETNAME "a.out"
-bfd_target host_aout_little_vec =
- {
- "a.out-host-little",
- bfd_target_aout_flavour,
- 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 */
- 3, /* minimum alignment power */
- _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putb16, /* data */
- _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* hdrs */
-
- {_bfd_dummy_target, NAME(host_aout,object_p),
- bfd_generic_archive_p, some_kinda_core_file_p},
- {bfd_false, NAME(host_aout,mkobject),
- _bfd_generic_mkarchive, bfd_false},
- {bfd_false, NAME(host_aout,write_object_contents), /* bfd_write_contents */
- _bfd_write_archive_contents, bfd_false},
-
- JUMP_TABLE(JNAME(aout))
-};
+#include "aout-target.h"
projects / thirdparty / binutils-gdb.git / blobdiff