diff options
Diffstat (limited to 'bfd/newsos3.c')
| -rw-r--r-- | bfd/newsos3.c | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/bfd/newsos3.c b/bfd/newsos3.c new file mode 100644 index 0000000..146f76a --- /dev/null +++ b/bfd/newsos3.c @@ -0,0 +1,207 @@ +/*** bfd backend for NewsOS3 (Sony, 68k) binaries */ + +/* Copyright (C) 1990, 1991 Free Software Foundation, Inc. + +This file is part of BFD, the Binary File Diddler. + +BFD 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. + +BFD 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. */ + +#define TARGET_BYTE_ORDER_BIG_P 1 + +#include <ansidecl.h> +#include "sysdep.h" +#include "bfd.h" +#include "libbfd.h" + +int vfprintf(file, format, args) /* Temporary crock! */ + FILE *file; char *format; char *args; +{ + return _doprnt (format, args, file); +} + +#define PAGE_SIZE 4096 +#define SEGMENT_SIZE 0x2000 /* FIXME, is this right?? */ +#define TEXT_START_ADDR PAGE_SIZE + +#include "a.out.gnu.h" +#include "stab.gnu.h" +#include "ar.h" +#include "liba.out.h" /* BFD a.out internal data structures */ + +bfd_target *newsos3_callback (); + +bfd_target * +newsos3_object_p (abfd) + bfd *abfd; +{ + unsigned char magicbuf[LONG_SIZE]; /* Raw bytes of magic number from file */ + unsigned long magic; /* Swapped magic number */ + + bfd_error = system_call_error; + + if (bfd_read ((PTR)magicbuf, 1, sizeof (magicbuf), abfd) != + sizeof (magicbuf)) + return 0; + magic = bfd_h_getlong (abfd, magicbuf); + + if (N_BADMAG (*((struct exec *) &magic))) return 0; + + return some_aout_object_p (abfd, newsos3_callback); +} + +/* Finish up the reading of a NEWS-OS a.out file header */ +bfd_target * +newsos3_callback (abfd) + bfd *abfd; +{ + struct exec *execp = 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); + + /* Determine the architecture and machine type of the object file. */ + abfd->obj_arch = bfd_arch_m68k; + abfd->obj_machine = 0; + + return abfd->xvec; +} + +/* Write an object file in NEWS-OS format. + Section contents have already been written. We write the + file header, symbols, and relocation. */ + +boolean +newsos3_write_object_contents (abfd) + bfd *abfd; +{ + 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; + + if (abfd->flags & D_PAGED) + execp->a_info = ZMAGIC; + else if (abfd->flags & WP_TEXT) + execp->a_info = NMAGIC; + else + execp->a_info = OMAGIC; + + 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; +} + +/* Transfer vectors for NEWS-OS version 3 */ + +/* 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 don't support core files yet. FIXME. */ +#define aout_core_file_failing_command _bfd_dummy_core_file_failing_command +#define aout_core_file_failing_signal _bfd_dummy_core_file_failing_signal +#define aout_core_file_matches_executable_p \ + _bfd_dummy_core_file_matches_executable_p +#define aout_core_file_p _bfd_dummy_target + +/* We define our own versions of these routines. */ + + +bfd_target newsos3_vec = /* Sony 68k-based machines running newos3 */ +{ + "a.out-newos3", /* 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, newsos3_object_p, /* bfd_check_format */ + bfd_generic_archive_p, aout_core_file_p}, + {bfd_false, aout_mkobject, /* bfd_set_format */ + _bfd_generic_mkarchive, bfd_false}, + {bfd_false, newsos3_write_object_contents, /* bfd_write_contents */ + _bfd_write_archive_contents, bfd_false}, + + JUMP_TABLE(aout) +}; |