X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=bfd%2Fbinary.c;h=999d41c0611403c4ee34732fdce2d5e384f58f59;hb=13835d88dc51497b9bd68dc1f394ca0de099a380;hp=65f46afa39c6114fa0bec28fed2014e85ba39549;hpb=0f867abe4ab1bf1b680a54d930736b5180ecb7ab;p=binutils-gdb.git diff --git a/bfd/binary.c b/bfd/binary.c index 65f46afa39c..999d41c0611 100644 --- a/bfd/binary.c +++ b/bfd/binary.c @@ -1,13 +1,12 @@ /* BFD back-end for binary objects. - Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 - Free Software Foundation, Inc. + Copyright (C) 1994-2022 Free Software Foundation, Inc. Written by Ian Lance Taylor, Cygnus Support, 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 + 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, @@ -17,12 +16,13 @@ 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + 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 a BFD backend which may be used to read or write binary + objects. Historically, it was used as an output format for objcopy + in order to generate raw binary data, but is now used for other + purposes as well. 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 @@ -32,8 +32,8 @@ the file. objcopy cooperates by specially setting the start address to zero by default. */ -#include "bfd.h" #include "sysdep.h" +#include "bfd.h" #include "safe-ctype.h" #include "libbfd.h" @@ -41,42 +41,24 @@ a start symbol, an end symbol, and an absolute length symbol. */ #define BIN_SYMS 3 -static bfd_boolean binary_mkobject PARAMS ((bfd *)); -static const bfd_target *binary_object_p PARAMS ((bfd *)); -static bfd_boolean binary_get_section_contents - PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type)); -static long binary_get_symtab_upper_bound PARAMS ((bfd *)); -static char *mangle_name PARAMS ((bfd *, char *)); -static long binary_canonicalize_symtab PARAMS ((bfd *, asymbol **)); -static void binary_get_symbol_info PARAMS ((bfd *, asymbol *, symbol_info *)); -static bfd_boolean binary_set_section_contents - PARAMS ((bfd *, asection *, const PTR, file_ptr, bfd_size_type)); -static int binary_sizeof_headers PARAMS ((bfd *, bfd_boolean)); - -/* Set by external programs - specifies the BFD architecture and - machine number to be uses when creating binary BFDs. */ -enum bfd_architecture bfd_external_binary_architecture = bfd_arch_unknown; -unsigned long bfd_external_machine = 0; - /* Create a binary object. Invoked via bfd_set_format. */ -static bfd_boolean -binary_mkobject (abfd) - bfd *abfd ATTRIBUTE_UNUSED; +static bool +binary_mkobject (bfd *abfd ATTRIBUTE_UNUSED) { - return TRUE; + 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 (abfd) - bfd *abfd; +static bfd_cleanup +binary_object_p (bfd *abfd) { struct stat statbuf; asection *sec; + flagword flags; if (abfd->target_defaulted) { @@ -94,52 +76,42 @@ binary_object_p (abfd) } /* One data section. */ - sec = bfd_make_section (abfd, ".data"); + 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->flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS; sec->vma = 0; - sec->_raw_size = statbuf.st_size; + sec->size = statbuf.st_size; sec->filepos = 0; - abfd->tdata.any = (PTR) sec; - - if (bfd_get_arch_info (abfd) != NULL) - { - if ((bfd_get_arch_info (abfd)->arch == bfd_arch_unknown) - && (bfd_external_binary_architecture != bfd_arch_unknown)) - bfd_set_arch_info (abfd, bfd_lookup_arch - (bfd_external_binary_architecture, bfd_external_machine)); - } + abfd->tdata.any = (void *) sec; - return abfd->xvec; + return _bfd_no_cleanup; } -#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 +#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 (abfd, section, location, offset, count) - bfd *abfd; - asection *section ATTRIBUTE_UNUSED; - PTR location; - file_ptr offset; - bfd_size_type count; +static bool +binary_get_section_contents (bfd *abfd, + asection *section, + void * location, + file_ptr offset, + bfd_size_type count) { - if (bfd_seek (abfd, offset, SEEK_SET) != 0 + if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 || bfd_bread (location, count, abfd) != count) - return FALSE; - return TRUE; + return false; + return true; } /* Return the amount of memory needed to read the symbol table. */ static long -binary_get_symtab_upper_bound (abfd) - bfd *abfd ATTRIBUTE_UNUSED; +binary_get_symtab_upper_bound (bfd *abfd ATTRIBUTE_UNUSED) { return (BIN_SYMS + 1) * sizeof (asymbol *); } @@ -147,9 +119,7 @@ binary_get_symtab_upper_bound (abfd) /* Create a symbol name based on the bfd's filename. */ static char * -mangle_name (abfd, suffix) - bfd *abfd; - char *suffix; +mangle_name (bfd *abfd, char *suffix) { bfd_size_type size; char *buf; @@ -176,18 +146,16 @@ mangle_name (abfd, suffix) /* Return the symbol table. */ static long -binary_canonicalize_symtab (abfd, alocation) - bfd *abfd; - asymbol **alocation; +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); + size_t amt = BIN_SYMS * sizeof (asymbol); syms = (asymbol *) bfd_alloc (abfd, amt); if (syms == NULL) - return 0; + return -1; /* Start symbol. */ syms[0].the_bfd = abfd; @@ -200,7 +168,7 @@ binary_canonicalize_symtab (abfd, alocation) /* End symbol. */ syms[1].the_bfd = abfd; syms[1].name = mangle_name (abfd, "end"); - syms[1].value = sec->_raw_size; + syms[1].value = sec->size; syms[1].flags = BSF_GLOBAL; syms[1].section = sec; syms[1].udata.p = NULL; @@ -208,7 +176,7 @@ binary_canonicalize_symtab (abfd, alocation) /* Size symbol. */ syms[2].the_bfd = abfd; syms[2].name = mangle_name (abfd, "size"); - syms[2].value = sec->_raw_size; + syms[2].value = sec->size; syms[2].flags = BSF_GLOBAL; syms[2].section = bfd_abs_section_ptr; syms[2].udata.p = NULL; @@ -220,81 +188,80 @@ binary_canonicalize_symtab (abfd, alocation) return BIN_SYMS; } -#define binary_make_empty_symbol _bfd_generic_make_empty_symbol -#define binary_print_symbol _bfd_nosymbols_print_symbol +#define binary_make_empty_symbol _bfd_generic_make_empty_symbol +#define binary_print_symbol _bfd_nosymbols_print_symbol +#define binary_get_symbol_version_string \ + _bfd_nosymbols_get_symbol_version_string /* Get information about a symbol. */ static void -binary_get_symbol_info (ignore_abfd, symbol, ret) - bfd *ignore_abfd ATTRIBUTE_UNUSED; - asymbol *symbol; - symbol_info *ret; +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_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_get_reloc_upper_bound \ - ((long (*) PARAMS ((bfd *, asection *))) bfd_0l) -#define binary_canonicalize_reloc \ - ((long (*) PARAMS ((bfd *, asection *, arelent **, asymbol **))) bfd_0l) -#define binary_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup +#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_line _bfd_nosymbols_find_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_bool_bfd_asymbol_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 (abfd, sec, data, offset, size) - bfd *abfd; - asection *sec; - const PTR data; - file_ptr offset; - bfd_size_type size; +static bool +binary_set_section_contents (bfd *abfd, + asection *sec, + const void * data, + file_ptr offset, + bfd_size_type size) { if (size == 0) - return TRUE; + return true; if (! abfd->output_has_begun) { - bfd_boolean found_low; + bool 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; + 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->_raw_size > 0) + && (s->size > 0) && (! found_low || s->lma < low)) { low = s->lma; - found_low = TRUE; + found_low = true; } for (s = abfd->sections; s != NULL; s = s->next) { - s->filepos = s->lma - low; + unsigned int opb = bfd_octets_per_byte (abfd, s); + + s->filepos = (s->lma - low) * opb; /* 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->_raw_size == 0)) + || (s->size == 0)) continue; /* If attempting to generate a binary file from a bfd with @@ -304,22 +271,23 @@ binary_set_section_contents (abfd, sec, data, offset, size) 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); + _bfd_error_handler + /* xgettext:c-format */ + (_("warning: writing section `%pA' at huge (ie negative) " + "file offset"), + s); } - abfd->output_has_begun = TRUE; + 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; + return true; if ((sec->flags & SEC_NEVER_LOAD) != 0) - return TRUE; + return true; return _bfd_generic_set_section_contents (abfd, sec, data, offset, size); } @@ -327,27 +295,32 @@ binary_set_section_contents (abfd, sec, data, offset, size) /* No space is required for header information. */ static int -binary_sizeof_headers (abfd, exec) - bfd *abfd ATTRIBUTE_UNUSED; - bfd_boolean exec ATTRIBUTE_UNUSED; +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_merge_sections bfd_generic_merge_sections -#define binary_bfd_discard_group bfd_generic_discard_group -#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_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 +#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_group_name bfd_generic_group_name +#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_hide_symbol _bfd_generic_link_hide_symbol +#define binary_bfd_define_start_stop bfd_generic_define_start_stop +#define binary_bfd_link_hash_table_create _bfd_generic_link_hash_table_create +#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 +#define binary_bfd_link_check_relocs _bfd_generic_link_check_relocs const bfd_target binary_vec = { @@ -361,6 +334,8 @@ const bfd_target binary_vec = 0, /* symbol_leading_char */ ' ', /* ar_pad_char */ 16, /* ar_max_namelen */ + 255, /* match priority. */ + TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */ 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 */ @@ -369,21 +344,21 @@ const bfd_target binary_vec = bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */ { /* bfd_check_format */ _bfd_dummy_target, - binary_object_p, /* bfd_check_format */ + binary_object_p, _bfd_dummy_target, _bfd_dummy_target, }, { /* bfd_set_format */ - bfd_false, + _bfd_bool_bfd_false_error, binary_mkobject, - bfd_false, - bfd_false, + _bfd_bool_bfd_false_error, + _bfd_bool_bfd_false_error, }, { /* bfd_write_contents */ - bfd_false, - bfd_true, - bfd_false, - bfd_false, + _bfd_bool_bfd_false_error, + _bfd_bool_bfd_true, + _bfd_bool_bfd_false_error, + _bfd_bool_bfd_false_error, }, BFD_JUMP_TABLE_GENERIC (binary), @@ -391,7 +366,7 @@ const bfd_target binary_vec = BFD_JUMP_TABLE_CORE (_bfd_nocore), BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), BFD_JUMP_TABLE_SYMBOLS (binary), - BFD_JUMP_TABLE_RELOCS (binary), + BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), BFD_JUMP_TABLE_WRITE (binary), BFD_JUMP_TABLE_LINK (binary), BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),