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Diffstat (limited to 'binutils-2.24/bfd/binary.c')
| -rw-r--r-- | binutils-2.24/bfd/binary.c | 369 |
1 files changed, 0 insertions, 369 deletions
diff --git a/binutils-2.24/bfd/binary.c b/binutils-2.24/bfd/binary.c deleted file mode 100644 index 700c862f..00000000 --- a/binutils-2.24/bfd/binary.c +++ /dev/null @@ -1,369 +0,0 @@ -/* BFD back-end for binary objects. - Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, - 2004, 2005, 2006, 2007, 2009, 2011 Free Software Foundation, Inc. - Written by Ian Lance Taylor, Cygnus Support, <ian@cygnus.com> - - 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 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. - - 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. */ - -/* This is a BFD backend which may be used to write binary objects. - It may only be used for output, not input. The intention is that - this may be used as an output format for objcopy in order to - generate raw binary data. - - This is very simple. The only complication is that the real data - will start at some address X, and in some cases we will not want to - include X zeroes just to get to that point. Since the start - address is not meaningful for this object file format, we use it - instead to indicate the number of zeroes to skip at the start of - the file. objcopy cooperates by specially setting the start - address to zero by default. */ - -#include "sysdep.h" -#include "bfd.h" -#include "safe-ctype.h" -#include "libbfd.h" - -/* Any bfd we create by reading a binary file has three symbols: - a start symbol, an end symbol, and an absolute length symbol. */ -#define BIN_SYMS 3 - -/* Create a binary object. Invoked via bfd_set_format. */ - -static bfd_boolean -binary_mkobject (bfd *abfd ATTRIBUTE_UNUSED) -{ - return TRUE; -} - -/* Any file may be considered to be a binary file, provided the target - was not defaulted. That is, it must be explicitly specified as - being binary. */ - -static const bfd_target * -binary_object_p (bfd *abfd) -{ - struct stat statbuf; - asection *sec; - flagword flags; - - if (abfd->target_defaulted) - { - bfd_set_error (bfd_error_wrong_format); - return NULL; - } - - abfd->symcount = BIN_SYMS; - - /* Find the file size. */ - if (bfd_stat (abfd, &statbuf) < 0) - { - bfd_set_error (bfd_error_system_call); - return NULL; - } - - /* One data section. */ - flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS; - sec = bfd_make_section_with_flags (abfd, ".data", flags); - if (sec == NULL) - return NULL; - sec->vma = 0; - sec->size = statbuf.st_size; - sec->filepos = 0; - - abfd->tdata.any = (void *) sec; - - return abfd->xvec; -} - -#define binary_close_and_cleanup _bfd_generic_close_and_cleanup -#define binary_bfd_free_cached_info _bfd_generic_bfd_free_cached_info -#define binary_new_section_hook _bfd_generic_new_section_hook - -/* Get contents of the only section. */ - -static bfd_boolean -binary_get_section_contents (bfd *abfd, - asection *section ATTRIBUTE_UNUSED, - void * location, - file_ptr offset, - bfd_size_type count) -{ - if (bfd_seek (abfd, offset, SEEK_SET) != 0 - || bfd_bread (location, count, abfd) != count) - return FALSE; - return TRUE; -} - -/* Return the amount of memory needed to read the symbol table. */ - -static long -binary_get_symtab_upper_bound (bfd *abfd ATTRIBUTE_UNUSED) -{ - return (BIN_SYMS + 1) * sizeof (asymbol *); -} - -/* Create a symbol name based on the bfd's filename. */ - -static char * -mangle_name (bfd *abfd, char *suffix) -{ - bfd_size_type size; - char *buf; - char *p; - - size = (strlen (bfd_get_filename (abfd)) - + strlen (suffix) - + sizeof "_binary__"); - - buf = (char *) bfd_alloc (abfd, size); - if (buf == NULL) - return ""; - - sprintf (buf, "_binary_%s_%s", bfd_get_filename (abfd), suffix); - - /* Change any non-alphanumeric characters to underscores. */ - for (p = buf; *p; p++) - if (! ISALNUM (*p)) - *p = '_'; - - return buf; -} - -/* Return the symbol table. */ - -static long -binary_canonicalize_symtab (bfd *abfd, asymbol **alocation) -{ - asection *sec = (asection *) abfd->tdata.any; - asymbol *syms; - unsigned int i; - bfd_size_type amt = BIN_SYMS * sizeof (asymbol); - - syms = (asymbol *) bfd_alloc (abfd, amt); - if (syms == NULL) - return -1; - - /* Start symbol. */ - syms[0].the_bfd = abfd; - syms[0].name = mangle_name (abfd, "start"); - syms[0].value = 0; - syms[0].flags = BSF_GLOBAL; - syms[0].section = sec; - syms[0].udata.p = NULL; - - /* End symbol. */ - syms[1].the_bfd = abfd; - syms[1].name = mangle_name (abfd, "end"); - syms[1].value = sec->size; - syms[1].flags = BSF_GLOBAL; - syms[1].section = sec; - syms[1].udata.p = NULL; - - /* Size symbol. */ - syms[2].the_bfd = abfd; - syms[2].name = mangle_name (abfd, "size"); - syms[2].value = sec->size; - syms[2].flags = BSF_GLOBAL; - syms[2].section = bfd_abs_section_ptr; - syms[2].udata.p = NULL; - - for (i = 0; i < BIN_SYMS; i++) - *alocation++ = syms++; - *alocation = NULL; - - return BIN_SYMS; -} - -#define binary_make_empty_symbol _bfd_generic_make_empty_symbol -#define binary_print_symbol _bfd_nosymbols_print_symbol - -/* Get information about a symbol. */ - -static void -binary_get_symbol_info (bfd *ignore_abfd ATTRIBUTE_UNUSED, - asymbol *symbol, - symbol_info *ret) -{ - bfd_symbol_info (symbol, ret); -} - -#define binary_bfd_is_local_label_name bfd_generic_is_local_label_name -#define binary_get_lineno _bfd_nosymbols_get_lineno -#define binary_find_nearest_line _bfd_nosymbols_find_nearest_line -#define binary_find_inliner_info _bfd_nosymbols_find_inliner_info -#define binary_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol -#define binary_read_minisymbols _bfd_generic_read_minisymbols -#define binary_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol -#define binary_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false) - -/* Set the architecture of a binary file. */ -#define binary_set_arch_mach _bfd_generic_set_arch_mach - -/* Write section contents of a binary file. */ - -static bfd_boolean -binary_set_section_contents (bfd *abfd, - asection *sec, - const void * data, - file_ptr offset, - bfd_size_type size) -{ - if (size == 0) - return TRUE; - - if (! abfd->output_has_begun) - { - bfd_boolean found_low; - bfd_vma low; - asection *s; - - /* The lowest section LMA sets the virtual address of the start - of the file. We use this to set the file position of all the - sections. */ - found_low = FALSE; - low = 0; - for (s = abfd->sections; s != NULL; s = s->next) - if (((s->flags - & (SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC | SEC_NEVER_LOAD)) - == (SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC)) - && (s->size > 0) - && (! found_low || s->lma < low)) - { - low = s->lma; - found_low = TRUE; - } - - for (s = abfd->sections; s != NULL; s = s->next) - { - s->filepos = s->lma - low; - - /* Skip following warning check for sections that will not - occupy file space. */ - if ((s->flags - & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_NEVER_LOAD)) - != (SEC_HAS_CONTENTS | SEC_ALLOC) - || (s->size == 0)) - continue; - - /* If attempting to generate a binary file from a bfd with - LMA's all over the place, huge (sparse?) binary files may - result. This condition attempts to detect this situation - and print a warning. Better heuristics would be nice to - have. */ - - if (s->filepos < 0) - (*_bfd_error_handler) - (_("Warning: Writing section `%s' to huge (ie negative) file offset 0x%lx."), - bfd_get_section_name (abfd, s), - (unsigned long) s->filepos); - } - - abfd->output_has_begun = TRUE; - } - - /* We don't want to output anything for a section that is neither - loaded nor allocated. The contents of such a section are not - meaningful in the binary format. */ - if ((sec->flags & (SEC_LOAD | SEC_ALLOC)) == 0) - return TRUE; - if ((sec->flags & SEC_NEVER_LOAD) != 0) - return TRUE; - - return _bfd_generic_set_section_contents (abfd, sec, data, offset, size); -} - -/* No space is required for header information. */ - -static int -binary_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED, - struct bfd_link_info *info ATTRIBUTE_UNUSED) -{ - return 0; -} - -#define binary_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents -#define binary_bfd_relax_section bfd_generic_relax_section -#define binary_bfd_gc_sections bfd_generic_gc_sections -#define binary_bfd_lookup_section_flags bfd_generic_lookup_section_flags -#define binary_bfd_merge_sections bfd_generic_merge_sections -#define binary_bfd_is_group_section bfd_generic_is_group_section -#define binary_bfd_discard_group bfd_generic_discard_group -#define binary_section_already_linked _bfd_generic_section_already_linked -#define binary_bfd_define_common_symbol bfd_generic_define_common_symbol -#define binary_bfd_link_hash_table_create _bfd_generic_link_hash_table_create -#define binary_bfd_link_hash_table_free _bfd_generic_link_hash_table_free -#define binary_bfd_link_just_syms _bfd_generic_link_just_syms -#define binary_bfd_copy_link_hash_symbol_type \ - _bfd_generic_copy_link_hash_symbol_type -#define binary_bfd_link_add_symbols _bfd_generic_link_add_symbols -#define binary_bfd_final_link _bfd_generic_final_link -#define binary_bfd_link_split_section _bfd_generic_link_split_section -#define binary_get_section_contents_in_window _bfd_generic_get_section_contents_in_window - -const bfd_target binary_vec = -{ - "binary", /* name */ - bfd_target_unknown_flavour, /* flavour */ - BFD_ENDIAN_UNKNOWN, /* byteorder */ - BFD_ENDIAN_UNKNOWN, /* header_byteorder */ - EXEC_P, /* object_flags */ - (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | SEC_DATA - | SEC_ROM | SEC_HAS_CONTENTS), /* section_flags */ - 0, /* symbol_leading_char */ - ' ', /* ar_pad_char */ - 16, /* ar_max_namelen */ - 255, /* match priority. */ - bfd_getb64, bfd_getb_signed_64, bfd_putb64, - bfd_getb32, bfd_getb_signed_32, bfd_putb32, - bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */ - bfd_getb64, bfd_getb_signed_64, bfd_putb64, - bfd_getb32, bfd_getb_signed_32, bfd_putb32, - bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */ - { /* bfd_check_format */ - _bfd_dummy_target, - binary_object_p, - _bfd_dummy_target, - _bfd_dummy_target, - }, - { /* bfd_set_format */ - bfd_false, - binary_mkobject, - bfd_false, - bfd_false, - }, - { /* bfd_write_contents */ - bfd_false, - bfd_true, - bfd_false, - bfd_false, - }, - - BFD_JUMP_TABLE_GENERIC (binary), - BFD_JUMP_TABLE_COPY (_bfd_generic), - BFD_JUMP_TABLE_CORE (_bfd_nocore), - BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), - BFD_JUMP_TABLE_SYMBOLS (binary), - BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), - BFD_JUMP_TABLE_WRITE (binary), - BFD_JUMP_TABLE_LINK (binary), - BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), - - NULL, - - NULL -}; |