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ae17ab41b7
2011-07-11 Catherine Moore <clm@codesourcery.com> * bfdlink.h (flag_type): New enumeration. (flag_info_list): New structure. (flag_info): New structure. bfd/ChangeLog 2011-07-11 Catherine Moore <clm@codesourcery.com> * aout-adobe.c (aout_32_bfd_lookup_section_flags): New definition. * aout-target.h (MY_bfd_lookup_section_flags): New definition. * aout-tic30.c (MY_bfd_lookup_section_flags): New definition. * bfd-in2.h: Regenerated. * bfd.c (bfd_lookup_section_flags): New definition. * binary.c (binary_bfd_lookup_section_flags): New definition. * bout.c (b_out_bfd_lookup_section_flags): New definition. * coff-alpha.c (_bfd_ecoff_bfd_lookup_section_flags): New definition. * coff-mips.c (_bfd_ecoff_bfd_lookup_section_flags): New definition. * coff-rs6000.c (rs6000coff_vec): Include bfd_generic_lookup_section_flags. (pmac_xcoff_vec): Likewise. * coffcode.h (coff_bfd_lookup_section_flags): New definition. * coff64-rs6000.c (rs6000coff64_vec): Include bfd_generic_lookup_section_flags. (aix5coff64_vec): Likewise. * ecoff.c (bfd_debug_section): Initialize flag_info field. * elf-bfd.h (elf_backend_lookup_section_flags_hook): Declare. (bfd_elf_lookup_section_flags): Declare. * elflink.c (bfd_elf_lookup_section_flags): New function. * elfxx-target.h (bfd_elfNN_bfd_lookup_section_flags): Define. (elf_backend_lookup_section_flags_hook): Define. (elf_backend_data): Add elf_backend_lookup_section_flags_hook. * i386msdos.c (msdos_bfd_lookup_section_flags): New define. * i386os9k.c (os9k_bfd_lookup_section_flags): New define. * ieee.c (ieee_bfd_lookup_section_flags): New define. * ihex.c (ihex_bfd_lookup_section_flags): New define. * libbfd-in.h (_bfd_nolink_bfd_lookup_section_flags): Declare. (bfd_generic_lookup_section_flags): Declare. * libbfd.h: Regenerated. * mach-o-target.c (bfd_mach_o_bfd_lookup_section_flags): New. * mmo.c (mmo_bfd_lookup_section_flags): New definition. * nlm-target.h (nlm_bfd_lookup_section_flags): New definition. * oasys.c (oasys_bfd_lookup_section_flags): New definition. * pef.c (bfd_pef_bfd_lookup_section_flags): New definition. * plugin.c (bfd_plugin_bfd_lookup_section_flags): New definition. * ppcboot.c (ppcboot_bfd_lookup_section_flags): New definition. * reloc.c (bfd_generic_lookup_section_flags): New function. * som.c (som_bfd_lookup_section_flags): New definition. * srec.c (srec_bfd_lookup_section_flags): New definition. * targets.c (flag_info): Declare. (NAME##_bfd_lookup_section_flags): Add to LINK jump table. (_bfd_lookup_section_flags): New. * tekhex.c (tekhex_bfd_lookup_section_flags): New definition. * versados.c (versados_bfd_lookup_section_flags): New definition. * vms-alpha.c (alpha_vms_bfd_lookup_section_flag): New definition. * xsym.c (bfd_sym_bfd_lookup_section_flags): New definition. ld/ChangeLog 2011-07-11 Catherine Moore <clm@codesourcery.com> * ld.h (section_flag_list): Add field to struct wildcard_spec. * ld.texinfo (INPUT_SECTION_FLAGS): Document. * ldgram.y (flag_info_list, flag_info): Add to union. (INPUT_SECTION_FLAGS): New token. (wildcard_spec): Initialize section_flag_list to NULL for each alternative. (sect_flag_list, sect_flags): New rules. (input_section_spec_no_keep): Add alternatives to recognize sect_flags. * ldlang.c (walk_wild_consider_section): Initialize section_flag_info field of the section struct. (lang_add_section): Check input section flags. (lang_add_wild): Initialize section_flag_list field of the statement struct. * ldlang.h (lang_input_statement_struct): Add section_flag_list field. (lang_wild_statement_struct): Likewise. * ldlex.l (INPUT_SECTION_FLAGS): New token. * mri.c (mri_draw_tree): Initialize section_flag_list to NULL. * NEWS: Announce INPUT_SECTION_FLAGS enhancement. ld/testsuite/ChangeLog 2011-07-11 Catherine Moore <clm@cm00re.com> * ld-scripts/section-flags-1.s: New. * ld-scripts/section-flags-1.t: New. * ld-scripts/section-flags-2.s: New. * ld-scripts/section-flags-2.t: New. * ld-scripts/section-flags.exp: New.
235 lines
7.9 KiB
C
235 lines
7.9 KiB
C
/* BFD back-end for MS-DOS executables.
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Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2001, 2002,
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2003, 2004, 2005, 2006, 2007, 2009, 2011 Free Software Foundation, Inc.
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Written by Bryan Ford of the University of Utah.
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Contributed by the Center for Software Science at the
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University of Utah (pa-gdb-bugs@cs.utah.edu).
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This file is part of BFD, the Binary File Descriptor library.
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This program 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 3 of the License, or
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(at your option) any later version.
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This program 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 this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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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 "libaout.h"
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#define EXE_MAGIC 0x5a4d
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#define EXE_LOAD_HIGH 0x0000
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#define EXE_LOAD_LOW 0xffff
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#define EXE_PAGE_SIZE 512
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static int
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msdos_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED,
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struct bfd_link_info *info ATTRIBUTE_UNUSED)
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{
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return 0;
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}
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static bfd_boolean
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msdos_write_object_contents (bfd *abfd)
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{
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static char hdr[EXE_PAGE_SIZE];
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file_ptr outfile_size = sizeof(hdr);
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bfd_vma high_vma = 0;
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asection *sec;
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/* Find the total size of the program on disk and in memory. */
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for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next)
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{
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if (sec->size == 0)
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continue;
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if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC)
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{
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bfd_vma sec_vma = bfd_get_section_vma (abfd, sec) + sec->size;
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if (sec_vma > high_vma)
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high_vma = sec_vma;
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}
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if (bfd_get_section_flags (abfd, sec) & SEC_LOAD)
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{
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file_ptr sec_end = (sizeof (hdr)
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+ bfd_get_section_vma (abfd, sec)
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+ sec->size);
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if (sec_end > outfile_size)
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outfile_size = sec_end;
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}
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}
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/* Make sure the program isn't too big. */
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if (high_vma > (bfd_vma)0xffff)
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{
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bfd_set_error(bfd_error_file_too_big);
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return FALSE;
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}
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/* Constants. */
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H_PUT_16 (abfd, EXE_MAGIC, &hdr[0]);
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H_PUT_16 (abfd, EXE_PAGE_SIZE / 16, &hdr[8]);
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H_PUT_16 (abfd, EXE_LOAD_LOW, &hdr[12]);
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H_PUT_16 (abfd, 0x3e, &hdr[24]);
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H_PUT_16 (abfd, 0x0001, &hdr[28]); /* XXX??? */
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H_PUT_16 (abfd, 0x30fb, &hdr[30]); /* XXX??? */
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H_PUT_16 (abfd, 0x726a, &hdr[32]); /* XXX??? */
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/* Bytes in last page (0 = full page). */
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H_PUT_16 (abfd, outfile_size & (EXE_PAGE_SIZE - 1), &hdr[2]);
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/* Number of pages. */
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H_PUT_16 (abfd, (outfile_size + EXE_PAGE_SIZE - 1) / EXE_PAGE_SIZE, &hdr[4]);
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/* Set the initial stack pointer to the end of the bss.
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The program's crt0 code must relocate it to a real stack. */
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H_PUT_16 (abfd, high_vma, &hdr[16]);
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if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
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|| bfd_bwrite (hdr, (bfd_size_type) sizeof(hdr), abfd) != sizeof(hdr))
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return FALSE;
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return TRUE;
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}
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static bfd_boolean
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msdos_set_section_contents (bfd *abfd,
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sec_ptr section,
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const void *location,
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file_ptr offset,
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bfd_size_type count)
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{
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if (count == 0)
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return TRUE;
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section->filepos = EXE_PAGE_SIZE + bfd_get_section_vma (abfd, section);
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if (bfd_get_section_flags (abfd, section) & SEC_LOAD)
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{
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if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
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|| bfd_bwrite (location, count, abfd) != count)
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return FALSE;
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}
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return TRUE;
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}
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#define msdos_mkobject aout_32_mkobject
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#define msdos_make_empty_symbol aout_32_make_empty_symbol
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#define msdos_bfd_reloc_type_lookup aout_32_reloc_type_lookup
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#define msdos_bfd_reloc_name_lookup aout_32_reloc_name_lookup
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#define msdos_close_and_cleanup _bfd_generic_close_and_cleanup
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#define msdos_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
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#define msdos_new_section_hook _bfd_generic_new_section_hook
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#define msdos_get_section_contents _bfd_generic_get_section_contents
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#define msdos_get_section_contents_in_window \
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_bfd_generic_get_section_contents_in_window
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#define msdos_bfd_get_relocated_section_contents \
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bfd_generic_get_relocated_section_contents
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#define msdos_bfd_relax_section bfd_generic_relax_section
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#define msdos_bfd_gc_sections bfd_generic_gc_sections
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#define msdos_bfd_lookup_section_flags bfd_generic_lookup_section_flags
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#define msdos_bfd_merge_sections bfd_generic_merge_sections
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#define msdos_bfd_is_group_section bfd_generic_is_group_section
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#define msdos_bfd_discard_group bfd_generic_discard_group
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#define msdos_section_already_linked \
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_bfd_generic_section_already_linked
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#define msdos_bfd_define_common_symbol bfd_generic_define_common_symbol
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#define msdos_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
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#define msdos_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
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#define msdos_bfd_link_add_symbols _bfd_generic_link_add_symbols
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#define msdos_bfd_link_just_syms _bfd_generic_link_just_syms
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#define msdos_bfd_copy_link_hash_symbol_type \
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_bfd_generic_copy_link_hash_symbol_type
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#define msdos_bfd_final_link _bfd_generic_final_link
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#define msdos_bfd_link_split_section _bfd_generic_link_split_section
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#define msdos_set_arch_mach _bfd_generic_set_arch_mach
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#define msdos_get_symtab_upper_bound _bfd_nosymbols_get_symtab_upper_bound
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#define msdos_canonicalize_symtab _bfd_nosymbols_canonicalize_symtab
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#define msdos_print_symbol _bfd_nosymbols_print_symbol
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#define msdos_get_symbol_info _bfd_nosymbols_get_symbol_info
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#define msdos_find_nearest_line _bfd_nosymbols_find_nearest_line
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#define msdos_find_inliner_info _bfd_nosymbols_find_inliner_info
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#define msdos_get_lineno _bfd_nosymbols_get_lineno
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#define msdos_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
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#define msdos_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name
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#define msdos_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
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#define msdos_read_minisymbols _bfd_nosymbols_read_minisymbols
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#define msdos_minisymbol_to_symbol _bfd_nosymbols_minisymbol_to_symbol
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#define msdos_canonicalize_reloc _bfd_norelocs_canonicalize_reloc
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#define msdos_get_reloc_upper_bound _bfd_norelocs_get_reloc_upper_bound
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#define msdos_32_bfd_link_split_section _bfd_generic_link_split_section
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const bfd_target i386msdos_vec =
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{
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"msdos", /* name */
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bfd_target_msdos_flavour,
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BFD_ENDIAN_LITTLE, /* target byte order */
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BFD_ENDIAN_LITTLE, /* target headers byte order */
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(EXEC_P), /* object flags */
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(SEC_CODE | SEC_DATA | SEC_HAS_CONTENTS
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| SEC_ALLOC | SEC_LOAD), /* section flags */
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0, /* leading underscore */
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' ', /* ar_pad_char */
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16, /* ar_max_namelen */
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0, /* match priority. */
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bfd_getl64, bfd_getl_signed_64, bfd_putl64,
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bfd_getl32, bfd_getl_signed_32, bfd_putl32,
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bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
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bfd_getl64, bfd_getl_signed_64, bfd_putl64,
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bfd_getl32, bfd_getl_signed_32, bfd_putl32,
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bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
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{
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_bfd_dummy_target,
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_bfd_dummy_target, /* bfd_check_format */
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_bfd_dummy_target,
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_bfd_dummy_target,
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},
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{
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bfd_false,
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msdos_mkobject,
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_bfd_generic_mkarchive,
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bfd_false,
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},
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{ /* bfd_write_contents */
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bfd_false,
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msdos_write_object_contents,
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_bfd_write_archive_contents,
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bfd_false,
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},
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BFD_JUMP_TABLE_GENERIC (msdos),
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BFD_JUMP_TABLE_COPY (_bfd_generic),
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BFD_JUMP_TABLE_CORE (_bfd_nocore),
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BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
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BFD_JUMP_TABLE_SYMBOLS (msdos),
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BFD_JUMP_TABLE_RELOCS (msdos),
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BFD_JUMP_TABLE_WRITE (msdos),
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BFD_JUMP_TABLE_LINK (msdos),
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BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
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NULL,
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(PTR) 0
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};
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