diff options
Diffstat (limited to 'bfd/aout-target.h')
| -rw-r--r-- | bfd/aout-target.h | 332 |
1 files changed, 332 insertions, 0 deletions
diff --git a/bfd/aout-target.h b/bfd/aout-target.h new file mode 100644 index 0000000..868a9e605 --- /dev/null +++ b/bfd/aout-target.h @@ -0,0 +1,332 @@ +/* Define a target vector for a variant of a.out. + Copyright (C) 1990-1991 Free Software Foundation, Inc. + +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 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. */ + +/* Set parameters about this a.out file that are machine-dependent. + This routine is called from some_aout_object_p just before it returns. */ +static bfd_target * +DEFUN(MY(callback),(abfd), + bfd *abfd) +{ + struct internal_exec *execp = exec_hdr (abfd); + +/* Calculate the file positions of the parts of a newly read aout header */ + obj_textsec (abfd)->_raw_size = N_TXTSIZE(*execp); + + /* The virtual memory addresses of the sections */ + obj_textsec (abfd)->vma = N_TXTADDR(*execp); + obj_datasec (abfd)->vma = N_DATADDR(*execp); + obj_bsssec (abfd)->vma = N_BSSADDR(*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_sym_filepos (abfd) = N_SYMOFF (*execp); + obj_str_filepos (abfd) = N_STROFF (*execp); + + /* Determine the architecture and machine type of the object file. + */ +#ifdef SET_ARCH_MACH + SET_ARCH_MACH(abfd, *execp); +#else + bfd_default_set_arch_mach(abfd, DEFAULT_ARCH, 0); +#endif + + adata(abfd).page_size = PAGE_SIZE; +#ifdef SEGMENT_SIZE + adata(abfd).segment_size = SEGMENT_SIZE; +#else + adata(abfd).segment_size = PAGE_SIZE; +#endif + adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE; + + return abfd->xvec; +} + +#ifndef MY_object_p +/* Finish up the reading of an a.out file header */ + +static bfd_target * +DEFUN(MY(object_p),(abfd), + bfd *abfd) +{ + struct external_exec exec_bytes; /* Raw exec header from file */ + struct internal_exec exec; /* Cleaned-up exec header */ + bfd_target *target; + + if (bfd_read ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd) + != EXEC_BYTES_SIZE) { + bfd_error = wrong_format; + return 0; + } + + exec.a_info = bfd_h_get_32 (abfd, exec_bytes.e_info); + + if (N_BADMAG (exec)) return 0; + + NAME(aout,swap_exec_header_in)(abfd, &exec_bytes, &exec); + target = NAME(aout,some_aout_object_p) (abfd, &exec, MY(callback)); + +#ifdef ENTRY_CAN_BE_ZERO + /* The NEWSOS3 entry-point is/was 0, which (amongst other lossage) + * means that it isn't obvious if EXEC_P should be set. + * All of the following must be true for an executable: + * There must be no relocations, the bfd can be neither an + * archive nor an archive element, and the file must be executable. */ + + if (exec.a_trsize + exec.a_drsize == 0 + && bfd_get_format(abfd) == bfd_object && abfd->my_archive == NULL) + { + struct stat buf; +#ifndef S_IXUSR +#define S_IXUSR 0100 /* Execute by owner. */ +#endif + if (stat(abfd->filename, &buf) == 0 && (buf.st_mode & S_IXUSR)) + abfd->flags |= EXEC_P; + } +#endif /* ENTRY_CAN_BE_ZERO */ + + return target; +} +#define MY_object_p MY(object_p) +#endif + + +#ifndef MY_mkobject +static boolean +DEFUN(MY(mkobject),(abfd), + bfd *abfd) +{ + if (NAME(aout,mkobject)(abfd) == false) + return false; + adata(abfd).page_size = PAGE_SIZE; +#ifdef SEGMENT_SIZE + adata(abfd).segment_size = SEGMENT_SIZE; +#else + adata(abfd).segment_size = PAGE_SIZE; +#endif + adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE; + return true; +} +#define MY_mkobject MY(mkobject) +#endif + +/* Write an object file. + Section contents have already been written. We write the + file header, symbols, and relocation. */ + +#ifndef MY_write_object_contents +static boolean +DEFUN(MY(write_object_contents),(abfd), + bfd *abfd) +{ + bfd_size_type data_pad = 0; + struct external_exec exec_bytes; + struct internal_exec *execp = exec_hdr (abfd); + + WRITE_HEADERS(abfd, execp); + return true; +} +#define MY_write_object_contents MY(write_object_contents) +#endif + +/* We assume BFD generic archive files. */ +#ifndef MY_openr_next_archived_file +#define MY_openr_next_archived_file bfd_generic_openr_next_archived_file +#endif +#ifndef MY_generic_stat_arch_elt +#define MY_generic_stat_arch_elt bfd_generic_stat_arch_elt +#endif +#ifndef MY_slurp_armap +#define MY_slurp_armap bfd_slurp_bsd_armap +#endif +#ifndef MY_slurp_extended_name_table +#define MY_slurp_extended_name_table bfd_true +#endif +#ifndef MY_write_armap +#define MY_write_armap bsd_write_armap +#endif +#ifndef MY_truncate_arname +#define MY_truncate_arname bfd_bsd_truncate_arname +#endif + +/* No core file defined here -- configure in trad-core.c separately. */ +#ifndef MY_core_file_failing_command +#define MY_core_file_failing_command _bfd_dummy_core_file_failing_command +#endif +#ifndef MY_core_file_failing_signal +#define MY_core_file_failing_signal _bfd_dummy_core_file_failing_signal +#endif +#ifndef MY_core_file_matches_executable_p +#define MY_core_file_matches_executable_p \ + _bfd_dummy_core_file_matches_executable_p +#endif +#ifndef MY_core_file_p +#define MY_core_file_p _bfd_dummy_target +#endif + +#ifndef MY_bfd_debug_info_start +#define MY_bfd_debug_info_start bfd_void +#endif +#ifndef MY_bfd_debug_info_end +#define MY_bfd_debug_info_end bfd_void +#endif +#ifndef MY_bfd_debug_info_accumulate +#define MY_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void +#endif + +#ifndef MY_core_file_failing_command +#define MY_core_file_failing_command NAME(aout,core_file_failing_command) +#endif +#ifndef MY_core_file_failing_signal +#define MY_core_file_failing_signal NAME(aout,core_file_failing_signal) +#endif +#ifndef MY_core_file_matches_executable_p +#define MY_core_file_matches_executable_p NAME(aout,core_file_matches_executable_p) +#endif +#ifndef MY_slurp_armap +#define MY_slurp_armap NAME(aout,slurp_armap) +#endif +#ifndef MY_slurp_extended_name_table +#define MY_slurp_extended_name_table NAME(aout,slurp_extended_name_table) +#endif +#ifndef MY_truncate_arname +#define MY_truncate_arname NAME(aout,truncate_arname) +#endif +#ifndef MY_write_armap +#define MY_write_armap NAME(aout,write_armap) +#endif +#ifndef MY_close_and_cleanup +#define MY_close_and_cleanup NAME(aout,close_and_cleanup) +#endif +#ifndef MY_set_section_contents +#define MY_set_section_contents NAME(aout,set_section_contents) +#endif +#ifndef MY_get_section_contents +#define MY_get_section_contents NAME(aout,get_section_contents) +#endif +#ifndef MY_new_section_hook +#define MY_new_section_hook NAME(aout,new_section_hook) +#endif +#ifndef MY_get_symtab_upper_bound +#define MY_get_symtab_upper_bound NAME(aout,get_symtab_upper_bound) +#endif +#ifndef MY_get_symtab +#define MY_get_symtab NAME(aout,get_symtab) +#endif +#ifndef MY_get_reloc_upper_bound +#define MY_get_reloc_upper_bound NAME(aout,get_reloc_upper_bound) +#endif +#ifndef MY_canonicalize_reloc +#define MY_canonicalize_reloc NAME(aout,canonicalize_reloc) +#endif +#ifndef MY_make_empty_symbol +#define MY_make_empty_symbol NAME(aout,make_empty_symbol) +#endif +#ifndef MY_print_symbol +#define MY_print_symbol NAME(aout,print_symbol) +#endif +#ifndef MY_get_lineno +#define MY_get_lineno NAME(aout,get_lineno) +#endif +#ifndef MY_set_arch_mach +#define MY_set_arch_mach NAME(aout,set_arch_mach) +#endif +#ifndef MY_openr_next_archived_file +#define MY_openr_next_archived_file NAME(aout,openr_next_archived_file) +#endif +#ifndef MY_find_nearest_line +#define MY_find_nearest_line NAME(aout,find_nearest_line) +#endif +#ifndef MY_generic_stat_arch_elt +#define MY_generic_stat_arch_elt NAME(aout,generic_stat_arch_elt) +#endif +#ifndef MY_sizeof_headers +#define MY_sizeof_headers NAME(aout,sizeof_headers) +#endif +#ifndef MY_bfd_debug_info_start +#define MY_bfd_debug_info_start NAME(aout,bfd_debug_info_start) +#endif +#ifndef MY_bfd_debug_info_end +#define MY_bfd_debug_info_end NAME(aout,bfd_debug_info_end) +#endif +#ifndef MY_bfd_debug_info_accumulat +#define MY_bfd_debug_info_accumulat NAME(aout,bfd_debug_info_accumulat) +#endif + +bfd_target MY(vec) = +{ + TARGETNAME, /* name */ + 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 */ + 1, /* minimum alignment */ +#ifdef TARGET_IS_BIG_ENDIAN_P + _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 */ +#else + _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */ + _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* hdrs */ +#endif + {_bfd_dummy_target, MY_object_p, /* bfd_check_format */ + bfd_generic_archive_p, MY_core_file_p}, + {bfd_false, MY_mkobject, /* bfd_set_format */ + _bfd_generic_mkarchive, bfd_false}, + {bfd_false, MY_write_object_contents, /* bfd_write_contents */ + _bfd_write_archive_contents, bfd_false}, + + MY_core_file_failing_command, + MY_core_file_failing_signal, + MY_core_file_matches_executable_p, + MY_slurp_armap, + MY_slurp_extended_name_table, + MY_truncate_arname, + MY_write_armap, + MY_close_and_cleanup, + MY_set_section_contents, + MY_get_section_contents, + MY_new_section_hook, + MY_get_symtab_upper_bound, + MY_get_symtab, + MY_get_reloc_upper_bound, + MY_canonicalize_reloc, + MY_make_empty_symbol, + MY_print_symbol, + MY_get_lineno, + MY_set_arch_mach, + MY_openr_next_archived_file, + MY_find_nearest_line, + MY_generic_stat_arch_elt, + MY_sizeof_headers, + MY_bfd_debug_info_start, + MY_bfd_debug_info_end, + MY_bfd_debug_info_accumulate, + bfd_generic_get_relocated_section_contents +}; |