1208 lines
34 KiB
C
1208 lines
34 KiB
C
/* PEF support for BFD.
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Copyright 1999, 2000, 2001, 2002
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Free Software Foundation, Inc.
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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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include <ctype.h>
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#include "pef.h"
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#include "pef-traceback.h"
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "libiberty.h"
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#ifndef BFD_IO_FUNCS
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#define BFD_IO_FUNCS 0
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#endif
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#define bfd_pef_close_and_cleanup _bfd_generic_close_and_cleanup
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#define bfd_pef_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
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#define bfd_pef_new_section_hook _bfd_generic_new_section_hook
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#define bfd_pef_bfd_is_local_label_name bfd_generic_is_local_label_name
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#define bfd_pef_get_lineno _bfd_nosymbols_get_lineno
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#define bfd_pef_find_nearest_line _bfd_nosymbols_find_nearest_line
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#define bfd_pef_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
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#define bfd_pef_read_minisymbols _bfd_generic_read_minisymbols
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#define bfd_pef_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
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#define bfd_pef_get_reloc_upper_bound _bfd_norelocs_get_reloc_upper_bound
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#define bfd_pef_canonicalize_reloc _bfd_norelocs_canonicalize_reloc
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#define bfd_pef_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
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#define bfd_pef_set_arch_mach _bfd_generic_set_arch_mach
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#define bfd_pef_get_section_contents _bfd_generic_get_section_contents
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#define bfd_pef_set_section_contents _bfd_generic_set_section_contents
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#define bfd_pef_bfd_get_relocated_section_contents \
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bfd_generic_get_relocated_section_contents
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#define bfd_pef_bfd_relax_section bfd_generic_relax_section
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#define bfd_pef_bfd_gc_sections bfd_generic_gc_sections
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#define bfd_pef_bfd_merge_sections bfd_generic_merge_sections
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#define bfd_pef_bfd_discard_group bfd_generic_discard_group
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#define bfd_pef_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
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#define bfd_pef_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
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#define bfd_pef_bfd_link_add_symbols _bfd_generic_link_add_symbols
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#define bfd_pef_bfd_link_just_syms _bfd_generic_link_just_syms
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#define bfd_pef_bfd_final_link _bfd_generic_final_link
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#define bfd_pef_bfd_link_split_section _bfd_generic_link_split_section
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#define bfd_pef_get_section_contents_in_window \
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_bfd_generic_get_section_contents_in_window
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static void bfd_pef_print_symbol
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PARAMS ((bfd *abfd, PTR afile, asymbol *symbol, bfd_print_symbol_type how));
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static void bfd_pef_convert_architecture
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PARAMS ((unsigned long architecture,
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enum bfd_architecture *type, unsigned long *subtype));
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static boolean bfd_pef_mkobject PARAMS ((bfd *abfd));
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static int bfd_pef_parse_traceback_table
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PARAMS ((bfd *abfd, asection *section, unsigned char *buf,
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size_t len, size_t pos, asymbol *sym, FILE *file));
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static const char *bfd_pef_section_name PARAMS ((bfd_pef_section *section));
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static unsigned long bfd_pef_section_flags PARAMS ((bfd_pef_section *section));
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static asection *bfd_pef_make_bfd_section PARAMS ((bfd *abfd, bfd_pef_section *section));
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static int bfd_pef_read_header PARAMS ((bfd *abfd, bfd_pef_header *header));
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static const bfd_target *bfd_pef_object_p PARAMS ((bfd *));
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static int bfd_pef_parse_traceback_tables
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PARAMS ((bfd *abfd, asection *sec, unsigned char *buf,
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size_t len, long *nsym, asymbol **csym));
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static int bfd_pef_parse_function_stub
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PARAMS ((bfd *abfd, unsigned char *buf, size_t len, unsigned long *offset));
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static int bfd_pef_parse_function_stubs
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PARAMS ((bfd *abfd, asection *codesec, unsigned char *codebuf, size_t codelen,
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unsigned char *loaderbuf, size_t loaderlen, unsigned long *nsym, asymbol **csym));
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static long bfd_pef_parse_symbols PARAMS ((bfd *abfd, asymbol **csym));
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static long bfd_pef_count_symbols PARAMS ((bfd *abfd));
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static long bfd_pef_get_symtab_upper_bound PARAMS ((bfd *));
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static long bfd_pef_get_symtab PARAMS ((bfd *, asymbol **));
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static asymbol *bfd_pef_make_empty_symbol PARAMS ((bfd *));
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static void bfd_pef_get_symbol_info PARAMS ((bfd *, asymbol *, symbol_info *));
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static int bfd_pef_sizeof_headers PARAMS ((bfd *, boolean));
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static int bfd_pef_xlib_read_header PARAMS ((bfd *abfd, bfd_pef_xlib_header *header));
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static int bfd_pef_xlib_scan PARAMS ((bfd *abfd, bfd_pef_xlib_header *header));
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static const bfd_target *bfd_pef_xlib_object_p PARAMS ((bfd *abfd));
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static void
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bfd_pef_print_symbol (abfd, afile, symbol, how)
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bfd *abfd;
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PTR afile;
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asymbol *symbol;
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bfd_print_symbol_type how;
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{
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FILE *file = (FILE *) afile;
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switch (how) {
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case bfd_print_symbol_name:
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fprintf (file, "%s", symbol->name);
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break;
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default:
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bfd_print_symbol_vandf (abfd, (PTR) file, symbol);
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fprintf (file, " %-5s %s", symbol->section->name, symbol->name);
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if (strncmp (symbol->name, "__traceback_", strlen ("__traceback_")) == 0) {
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char *buf = alloca (symbol->udata.i);
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size_t offset = symbol->value + 4;
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size_t len = symbol->udata.i;
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int ret;
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bfd_get_section_contents (abfd, symbol->section, buf, offset, len);
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ret = bfd_pef_parse_traceback_table (abfd, symbol->section, buf, len, 0, NULL, file);
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if (ret < 0) {
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fprintf (file, " [ERROR]");
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}
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}
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}
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}
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static void bfd_pef_convert_architecture (architecture, type, subtype)
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unsigned long architecture;
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enum bfd_architecture *type;
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unsigned long *subtype;
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{
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*subtype = bfd_arch_unknown;
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*type = bfd_arch_unknown;
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const unsigned long ARCH_POWERPC = 0x70777063; /* 'pwpc' */
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const unsigned long ARCH_M68K = 0x6d36386b; /* 'm68k' */
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if (architecture == ARCH_POWERPC)
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*type = bfd_arch_powerpc;
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else if (architecture == ARCH_M68K)
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*type = bfd_arch_m68k;
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}
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static boolean
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bfd_pef_mkobject (abfd)
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bfd *abfd ATTRIBUTE_UNUSED;
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{
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return true;
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}
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static int
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bfd_pef_parse_traceback_table (abfd, section, buf, len, pos, sym, file)
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bfd *abfd;
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asection *section;
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unsigned char *buf;
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size_t len;
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size_t pos;
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asymbol *sym;
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FILE *file;
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{
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struct traceback_table table;
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size_t offset;
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const char *s;
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asymbol tmpsymbol;
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if (sym == NULL) { sym = &tmpsymbol; }
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sym->name = NULL;
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sym->value = 0;
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sym->the_bfd = abfd;
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sym->section = section;
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sym->flags = 0;
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sym->udata.i = 0;
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/* memcpy is fine since all fields are unsigned char */
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if ((pos + 8) > len) { return -1; }
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memcpy (&table, buf + pos, 8);
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/* calling code relies on returned symbols having a name and correct offset */
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if ((table.lang != TB_C) && (table.lang != TB_CPLUSPLUS)) {
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return -1;
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}
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if (! (table.flags2 & TB_NAME_PRESENT)) {
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return -1;
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}
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if (! table.flags1 & TB_HAS_TBOFF) {
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return -1;
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}
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offset = 8;
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if ((table.flags5 & TB_FLOATPARAMS) || (table.fixedparams)) {
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offset += 4;
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}
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if (table.flags1 & TB_HAS_TBOFF) {
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struct traceback_table_tboff off;
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if ((pos + offset + 4) > len) { return -1; }
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off.tb_offset = bfd_getb32 (buf + pos + offset);
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offset += 4;
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/* need to subtract 4 because the offset includes the 0x0L
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preceding the table */
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if (file != NULL) {
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fprintf (file, " [offset = 0x%lx]", off.tb_offset);
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}
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if ((file == NULL) && ((off.tb_offset + 4) > (pos + offset))) {
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return -1;
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}
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sym->value = pos - off.tb_offset - 4;
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}
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if (table.flags2 & TB_INT_HNDL) {
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offset += 4;
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}
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if (table.flags1 & TB_HAS_CTL) {
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struct traceback_table_anchors anchors;
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if ((pos + offset + 4) > len) { return -1; }
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anchors.ctl_info = bfd_getb32 (buf + pos + offset);
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offset += 4;
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if (anchors.ctl_info > 1024) {
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return -1;
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}
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offset += anchors.ctl_info * 4;
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}
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if (table.flags2 & TB_NAME_PRESENT) {
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struct traceback_table_routine name;
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char *namebuf;
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if ((pos + offset + 2) > len) { return -1; }
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name.name_len = bfd_getb16 (buf + pos + offset);
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offset += 2;
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if (name.name_len > 4096) { return -1; }
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if ((pos + offset + name.name_len) > len) { return -1; }
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namebuf = (char *) bfd_alloc (abfd, name.name_len + 1);
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if (namebuf == NULL) { return -1; }
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memcpy (namebuf, buf + pos + offset, name.name_len);
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namebuf[name.name_len] = '\0';
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/* strip leading period inserted by compiler */
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if (namebuf[0] == '.') {
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memmove (namebuf, namebuf + 1, name.name_len + 1);
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}
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sym->name = namebuf;
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for (s = sym->name; (*s != '\0'); s++) {
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if (! isprint (*s)) {
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return -1;
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}
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}
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offset += name.name_len;
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}
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if (table.flags2 & TB_USES_ALLOCA) {
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offset += 4;
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}
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if (table.flags4 & TB_HAS_VEC_INFO) {
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offset += 4;
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}
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if (file != NULL) {
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fprintf (file, " [length = 0x%lx]", (long) offset);
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}
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return offset;
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}
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static const char *bfd_pef_section_name (section)
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bfd_pef_section *section;
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{
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switch (section->section_kind) {
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case BFD_PEF_SECTION_CODE: return "code";
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case BFD_PEF_SECTION_UNPACKED_DATA: return "unpacked-data";
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case BFD_PEF_SECTION_PACKED_DATA: return "packed-data";
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case BFD_PEF_SECTION_CONSTANT: return "constant";
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case BFD_PEF_SECTION_LOADER: return "loader";
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case BFD_PEF_SECTION_DEBUG: return "debug";
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case BFD_PEF_SECTION_EXEC_DATA: return "exec-data";
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case BFD_PEF_SECTION_EXCEPTION: return "exception";
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case BFD_PEF_SECTION_TRACEBACK: return "traceback";
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default: return "unknown";
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}
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}
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static unsigned long bfd_pef_section_flags (section)
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bfd_pef_section *section;
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{
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switch (section->section_kind) {
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case BFD_PEF_SECTION_CODE:
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return SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC | SEC_CODE;
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case BFD_PEF_SECTION_UNPACKED_DATA:
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case BFD_PEF_SECTION_PACKED_DATA:
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case BFD_PEF_SECTION_CONSTANT:
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case BFD_PEF_SECTION_LOADER:
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case BFD_PEF_SECTION_DEBUG:
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case BFD_PEF_SECTION_EXEC_DATA:
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case BFD_PEF_SECTION_EXCEPTION:
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case BFD_PEF_SECTION_TRACEBACK:
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default:
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return SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC;
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}
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}
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static asection *
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bfd_pef_make_bfd_section (abfd, section)
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bfd *abfd;
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bfd_pef_section *section;
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{
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asection *bfdsec;
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const char *name = bfd_pef_section_name (section);
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bfdsec = bfd_make_section_anyway (abfd, name);
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if (bfdsec == NULL) { return NULL; }
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bfdsec->vma = section->default_address + section->container_offset;
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bfdsec->lma = section->default_address + section->container_offset;
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bfdsec->_raw_size = section->container_length;
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bfdsec->filepos = section->container_offset;
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bfdsec->alignment_power = section->alignment;
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bfdsec->flags = bfd_pef_section_flags (section);
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return bfdsec;
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}
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int bfd_pef_parse_loader_header (abfd, buf, len, header)
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bfd *abfd ATTRIBUTE_UNUSED;
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unsigned char *buf;
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size_t len;
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bfd_pef_loader_header *header;
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{
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BFD_ASSERT (len == 56);
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header->main_section = bfd_getb32 (buf);
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header->main_offset = bfd_getb32 (buf + 4);
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header->init_section = bfd_getb32 (buf + 8);
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header->init_offset = bfd_getb32 (buf + 12);
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header->term_section = bfd_getb32 (buf + 16);
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header->term_offset = bfd_getb32 (buf + 20);
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header->imported_library_count = bfd_getb32 (buf + 24);
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header->total_imported_symbol_count = bfd_getb32 (buf + 28);
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header->reloc_section_count = bfd_getb32 (buf + 32);
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header->reloc_instr_offset = bfd_getb32 (buf + 36);
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header->loader_strings_offset = bfd_getb32 (buf + 40);
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header->export_hash_offset = bfd_getb32 (buf + 44);
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header->export_hash_table_power = bfd_getb32 (buf + 48);
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header->exported_symbol_count = bfd_getb32 (buf + 52);
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return 0;
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}
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int bfd_pef_parse_imported_library (abfd, buf, len, header)
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bfd *abfd ATTRIBUTE_UNUSED;
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unsigned char *buf;
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size_t len;
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bfd_pef_imported_library *header;
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{
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BFD_ASSERT (len == 24);
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header->name_offset = bfd_getb32 (buf);
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header->old_implementation_version = bfd_getb32 (buf + 4);
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header->current_version = bfd_getb32 (buf + 8);
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header->imported_symbol_count = bfd_getb32 (buf + 12);
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header->first_imported_symbol = bfd_getb32 (buf + 16);
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header->options = buf[20];
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header->reserved_a = buf[21];
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header->reserved_b = bfd_getb16 (buf + 22);
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return 0;
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}
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int bfd_pef_parse_imported_symbol (abfd, buf, len, symbol)
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bfd *abfd ATTRIBUTE_UNUSED;
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unsigned char *buf;
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size_t len;
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bfd_pef_imported_symbol *symbol;
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{
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unsigned long value;
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BFD_ASSERT (len == 4);
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value = bfd_getb32 (buf);
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symbol->class = value >> 24;
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symbol->name = value & 0x00ffffff;
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return 0;
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}
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int bfd_pef_scan_section (abfd, section)
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bfd *abfd;
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bfd_pef_section *section;
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{
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unsigned char buf[28];
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bfd_seek (abfd, section->header_offset, SEEK_SET);
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if (bfd_bread ((PTR) buf, 28, abfd) != 28) { return -1; }
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section->name_offset = bfd_h_get_32 (abfd, buf);
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section->default_address = bfd_h_get_32 (abfd, buf + 4);
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section->total_length = bfd_h_get_32 (abfd, buf + 8);
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section->unpacked_length = bfd_h_get_32 (abfd, buf + 12);
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section->container_length = bfd_h_get_32 (abfd, buf + 16);
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section->container_offset = bfd_h_get_32 (abfd, buf + 20);
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section->section_kind = buf[24];
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section->share_kind = buf[25];
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section->alignment = buf[26];
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section->reserved = buf[27];
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section->bfd_section = bfd_pef_make_bfd_section (abfd, section);
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if (section->bfd_section == NULL) { return -1; }
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return 0;
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}
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void
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bfd_pef_print_loader_header (abfd, header, file)
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bfd *abfd ATTRIBUTE_UNUSED;
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bfd_pef_loader_header *header;
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FILE *file;
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{
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fprintf (file, "main_section: %ld\n", header->main_section);
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fprintf (file, "main_offset: %lu\n", header->main_offset);
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fprintf (file, "init_section: %ld\n", header->init_section);
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fprintf (file, "init_offset: %lu\n", header->init_offset);
|
|
fprintf (file, "term_section: %ld\n", header->term_section);
|
|
fprintf (file, "term_offset: %lu\n", header->term_offset);
|
|
fprintf (file, "imported_library_count: %lu\n", header->imported_library_count);
|
|
fprintf (file, "total_imported_symbol_count: %lu\n", header->total_imported_symbol_count);
|
|
fprintf (file, "reloc_section_count: %lu\n", header->reloc_section_count);
|
|
fprintf (file, "reloc_instr_offset: %lu\n", header->reloc_instr_offset);
|
|
fprintf (file, "loader_strings_offset: %lu\n", header->loader_strings_offset);
|
|
fprintf (file, "export_hash_offset: %lu\n", header->export_hash_offset);
|
|
fprintf (file, "export_hash_table_power: %lu\n", header->export_hash_table_power);
|
|
fprintf (file, "exported_symbol_count: %lu\n", header->exported_symbol_count);
|
|
}
|
|
|
|
int
|
|
bfd_pef_print_loader_section (abfd, file)
|
|
bfd *abfd;
|
|
FILE *file;
|
|
{
|
|
bfd_pef_loader_header header;
|
|
asection *loadersec = NULL;
|
|
unsigned char *loaderbuf = NULL;
|
|
size_t loaderlen = 0;
|
|
int ret;
|
|
|
|
loadersec = bfd_get_section_by_name (abfd, "loader");
|
|
if (loadersec == NULL) { return -1; }
|
|
|
|
loaderlen = bfd_section_size (abfd, loadersec);
|
|
loaderbuf = (unsigned char *) bfd_malloc (loaderlen);
|
|
if (bfd_seek (abfd, loadersec->filepos, SEEK_SET) < 0)
|
|
{ free (loaderbuf); return -1; }
|
|
if (bfd_bread ((PTR) loaderbuf, loaderlen, abfd) != loaderlen)
|
|
{ free (loaderbuf); return -1; }
|
|
|
|
if (loaderlen < 56) { free (loaderbuf); return -1; }
|
|
ret = bfd_pef_parse_loader_header (abfd, loaderbuf, 56, &header);
|
|
if (ret < 0) { free (loaderbuf); return -1; }
|
|
|
|
bfd_pef_print_loader_header (abfd, &header, file);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
bfd_pef_scan_start_address (abfd)
|
|
bfd *abfd;
|
|
{
|
|
bfd_pef_loader_header header;
|
|
asection *section;
|
|
|
|
asection *loadersec = NULL;
|
|
unsigned char *loaderbuf = NULL;
|
|
size_t loaderlen = 0;
|
|
int ret;
|
|
|
|
loadersec = bfd_get_section_by_name (abfd, "loader");
|
|
if (loadersec == NULL) { goto end; }
|
|
|
|
loaderlen = bfd_section_size (abfd, loadersec);
|
|
loaderbuf = (unsigned char *) bfd_malloc (loaderlen);
|
|
if (bfd_seek (abfd, loadersec->filepos, SEEK_SET) < 0) { goto error; }
|
|
if (bfd_bread ((PTR) loaderbuf, loaderlen, abfd) != loaderlen) { goto error; }
|
|
|
|
if (loaderlen < 56) { goto error; }
|
|
ret = bfd_pef_parse_loader_header (abfd, loaderbuf, 56, &header);
|
|
if (ret < 0) { goto error; }
|
|
|
|
if (header.main_section < 0) { goto end; }
|
|
|
|
for (section = abfd->sections; section != NULL; section = section->next) {
|
|
if ((section->index + 1) == header.main_section) { break; }
|
|
}
|
|
|
|
if (section == NULL) { goto error; }
|
|
|
|
abfd->start_address = section->vma + header.main_offset;
|
|
|
|
end:
|
|
if (loaderbuf != NULL) { free (loaderbuf); }
|
|
return 0;
|
|
|
|
error:
|
|
if (loaderbuf != NULL) { free (loaderbuf); }
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
bfd_pef_scan (abfd, header)
|
|
bfd *abfd;
|
|
bfd_pef_header *header;
|
|
{
|
|
unsigned int i;
|
|
bfd_pef_data_struct *mdata = NULL;
|
|
enum bfd_architecture cputype;
|
|
unsigned long cpusubtype;
|
|
|
|
if ((header->tag1 != BFD_PEF_TAG1) || (header->tag2 != BFD_PEF_TAG2)) {
|
|
return -1;
|
|
}
|
|
|
|
mdata = ((bfd_pef_data_struct *)
|
|
bfd_alloc (abfd, sizeof (bfd_pef_data_struct)));
|
|
if (mdata == NULL) { return -1; }
|
|
|
|
bfd_pef_convert_architecture (header->architecture, &cputype, &cpusubtype);
|
|
if (cputype == bfd_arch_unknown) {
|
|
fprintf (stderr, "bfd_pef_scan: unknown architecture 0x%lx\n", header->architecture);
|
|
return -1;
|
|
}
|
|
bfd_set_arch_mach (abfd, cputype, cpusubtype);
|
|
|
|
mdata->header = *header;
|
|
|
|
abfd->flags = abfd->xvec->object_flags | (abfd->flags & (BFD_IN_MEMORY | BFD_IO_FUNCS));
|
|
|
|
if (header->section_count != 0) {
|
|
|
|
mdata->sections =
|
|
((bfd_pef_section *)
|
|
bfd_alloc (abfd, header->section_count * sizeof (bfd_pef_section)));
|
|
if (mdata->sections == NULL) { return -1; }
|
|
|
|
for (i = 0; i < header->section_count; i++) {
|
|
bfd_pef_section *cur = &mdata->sections[i];
|
|
cur->header_offset = 40 + (i * 28);
|
|
if (bfd_pef_scan_section (abfd, cur) < 0) {
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (bfd_pef_scan_start_address (abfd) < 0) {
|
|
#if 0
|
|
fprintf (stderr, "bfd_pef_scan: unable to scan start address: %s\n",
|
|
bfd_errmsg (bfd_get_error ()));
|
|
abfd->tdata.pef_data = NULL;
|
|
return -1;
|
|
#endif
|
|
}
|
|
|
|
abfd->tdata.pef_data = mdata;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
bfd_pef_read_header (abfd, header)
|
|
bfd *abfd;
|
|
bfd_pef_header *header;
|
|
{
|
|
unsigned char buf[40];
|
|
|
|
bfd_seek (abfd, 0, SEEK_SET);
|
|
|
|
if (bfd_bread ((PTR) buf, 40, abfd) != 40) { return -1; }
|
|
|
|
header->tag1 = bfd_getb32 (buf);
|
|
header->tag2 = bfd_getb32 (buf + 4);
|
|
header->architecture = bfd_getb32 (buf + 8);
|
|
header->format_version = bfd_getb32 (buf + 12);
|
|
header->timestamp = bfd_getb32 (buf + 16);
|
|
header->old_definition_version = bfd_getb32 (buf + 20);
|
|
header->old_implementation_version = bfd_getb32 (buf + 24);
|
|
header->current_version = bfd_getb32 (buf + 28);
|
|
header->section_count = bfd_getb32 (buf + 32) + 1;
|
|
header->instantiated_section_count = bfd_getb32 (buf + 34);
|
|
header->reserved = bfd_getb32 (buf + 36);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const bfd_target *
|
|
bfd_pef_object_p (abfd)
|
|
bfd *abfd;
|
|
{
|
|
bfd_pef_header header;
|
|
|
|
abfd->tdata.pef_data = NULL;
|
|
|
|
if (bfd_pef_read_header (abfd, &header) != 0) {
|
|
abfd->tdata.pef_data = NULL;
|
|
bfd_set_error (bfd_error_wrong_format);
|
|
return NULL;
|
|
}
|
|
|
|
if (bfd_pef_scan (abfd, &header) != 0) {
|
|
abfd->tdata.pef_data = NULL;
|
|
bfd_set_error (bfd_error_wrong_format);
|
|
return NULL;
|
|
}
|
|
|
|
return abfd->xvec;
|
|
}
|
|
|
|
static int bfd_pef_parse_traceback_tables (abfd, sec, buf, len, nsym, csym)
|
|
bfd *abfd;
|
|
asection *sec;
|
|
unsigned char *buf;
|
|
size_t len;
|
|
long *nsym;
|
|
asymbol **csym;
|
|
{
|
|
char *name;
|
|
|
|
asymbol function;
|
|
asymbol traceback;
|
|
|
|
const char *const tbprefix = "__traceback_";
|
|
size_t tbnamelen;
|
|
|
|
size_t pos = 0;
|
|
unsigned long count = 0;
|
|
int ret;
|
|
|
|
for (;;) {
|
|
|
|
/* we're reading symbols two at a time */
|
|
|
|
if (csym && ((csym[count] == NULL) || (csym[count + 1] == NULL))) {
|
|
break;
|
|
}
|
|
|
|
pos += 3;
|
|
pos -= (pos % 4);
|
|
|
|
while ((pos + 4) <= len) {
|
|
if (bfd_getb32 (buf + pos) == 0) {
|
|
break;
|
|
}
|
|
pos += 4;
|
|
}
|
|
|
|
if ((pos + 4) > len) {
|
|
break;
|
|
}
|
|
|
|
ret = bfd_pef_parse_traceback_table (abfd, sec, buf, len, pos + 4, &function, 0);
|
|
if (ret < 0) {
|
|
/* skip over 0x0L to advance to next possible traceback table */
|
|
pos += 4;
|
|
continue;
|
|
}
|
|
|
|
BFD_ASSERT (function.name != NULL);
|
|
|
|
/* Don't bother to compute the name if we are just
|
|
counting symbols */
|
|
|
|
if (csym)
|
|
{
|
|
tbnamelen = strlen (tbprefix) + strlen (function.name);
|
|
name = bfd_alloc (abfd, tbnamelen + 1);
|
|
if (name == NULL) {
|
|
bfd_release (abfd, (PTR) function.name);
|
|
function.name = NULL;
|
|
break;
|
|
}
|
|
snprintf (name, tbnamelen + 1, "%s%s", tbprefix, function.name);
|
|
traceback.name = name;
|
|
traceback.value = pos;
|
|
traceback.the_bfd = abfd;
|
|
traceback.section = sec;
|
|
traceback.flags = 0;
|
|
traceback.udata.i = ret;
|
|
|
|
*(csym[count]) = function;
|
|
*(csym[count + 1]) = traceback;
|
|
}
|
|
|
|
pos += ret;
|
|
count += 2;
|
|
}
|
|
|
|
*nsym = count;
|
|
return 0;
|
|
}
|
|
|
|
static int bfd_pef_parse_function_stub (abfd, buf, len, offset)
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
|
unsigned char *buf;
|
|
size_t len;
|
|
unsigned long *offset;
|
|
{
|
|
BFD_ASSERT (len == 24);
|
|
|
|
if ((bfd_getb32 (buf) & 0xffff0000) != 0x81820000) { return -1; }
|
|
if (bfd_getb32 (buf + 4) != 0x90410014) { return -1; }
|
|
if (bfd_getb32 (buf + 8) != 0x800c0000) { return -1; }
|
|
if (bfd_getb32 (buf + 12) != 0x804c0004) { return -1; }
|
|
if (bfd_getb32 (buf + 16) != 0x7c0903a6) { return -1; }
|
|
if (bfd_getb32 (buf + 20) != 0x4e800420) { return -1; }
|
|
|
|
if (offset != NULL) {
|
|
*offset = (bfd_getb32 (buf) & 0x0000ffff) / 4;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bfd_pef_parse_function_stubs (abfd, codesec, codebuf, codelen, loaderbuf, loaderlen, nsym, csym)
|
|
bfd *abfd;
|
|
asection *codesec;
|
|
unsigned char *codebuf;
|
|
size_t codelen;
|
|
unsigned char *loaderbuf;
|
|
size_t loaderlen;
|
|
unsigned long *nsym;
|
|
asymbol **csym;
|
|
{
|
|
const char *const sprefix = "__stub_";
|
|
|
|
size_t codepos = 0;
|
|
unsigned long count = 0;
|
|
|
|
bfd_pef_loader_header header;
|
|
bfd_pef_imported_library *libraries = NULL;
|
|
bfd_pef_imported_symbol *imports = NULL;
|
|
|
|
unsigned long i;
|
|
int ret;
|
|
|
|
if (loaderlen < 56) { goto error; }
|
|
|
|
ret = bfd_pef_parse_loader_header (abfd, loaderbuf, 56, &header);
|
|
if (ret < 0) { goto error; }
|
|
|
|
libraries = (bfd_pef_imported_library *) bfd_malloc
|
|
(header.imported_library_count * sizeof (bfd_pef_imported_library));
|
|
imports = (bfd_pef_imported_symbol *) bfd_malloc
|
|
(header.total_imported_symbol_count * sizeof (bfd_pef_imported_symbol));
|
|
|
|
if (loaderlen < (56 + (header.imported_library_count * 24))) { goto error; }
|
|
for (i = 0; i < header.imported_library_count; i++) {
|
|
ret = bfd_pef_parse_imported_library
|
|
(abfd, loaderbuf + 56 + (i * 24), 24, &libraries[i]);
|
|
if (ret < 0) { goto error; }
|
|
}
|
|
|
|
if (loaderlen < (56 + (header.imported_library_count * 24) + (header.total_imported_symbol_count * 4)))
|
|
{ goto error; }
|
|
for (i = 0; i < header.total_imported_symbol_count; i++) {
|
|
ret = bfd_pef_parse_imported_symbol
|
|
(abfd, loaderbuf + 56 + (header.imported_library_count * 24) + (i * 4), 4, &imports[i]);
|
|
if (ret < 0) { goto error; }
|
|
}
|
|
|
|
codepos = 0;
|
|
|
|
for (;;) {
|
|
|
|
asymbol sym;
|
|
const char *symname;
|
|
char *name;
|
|
unsigned long index;
|
|
int ret;
|
|
|
|
if (csym && (csym[count] == NULL)) { break; }
|
|
|
|
codepos += 3;
|
|
codepos -= (codepos % 4);
|
|
|
|
while ((codepos + 4) <= codelen) {
|
|
if ((bfd_getb32 (codebuf + codepos) & 0xffff0000) == 0x81820000) {
|
|
break;
|
|
}
|
|
codepos += 4;
|
|
}
|
|
|
|
if ((codepos + 4) > codelen) {
|
|
break;
|
|
}
|
|
|
|
ret = bfd_pef_parse_function_stub (abfd, codebuf + codepos, 24, &index);
|
|
if (ret < 0) { codepos += 24; continue; }
|
|
|
|
if (index >= header.total_imported_symbol_count) { codepos += 24; continue; }
|
|
|
|
{
|
|
size_t max, namelen;
|
|
const char *s;
|
|
|
|
if (loaderlen < (header.loader_strings_offset + imports[index].name)) { goto error; }
|
|
|
|
max = loaderlen - (header.loader_strings_offset + imports[index].name);
|
|
symname = loaderbuf + header.loader_strings_offset + imports[index].name;
|
|
namelen = 0;
|
|
for (s = symname; s < (symname + max); s++) {
|
|
if (*s == '\0') { break; }
|
|
if (! isprint (*s)) { goto error; }
|
|
namelen++;
|
|
}
|
|
if (*s != '\0') { goto error; }
|
|
|
|
name = bfd_alloc (abfd, strlen (sprefix) + namelen + 1);
|
|
if (name == NULL) { break; }
|
|
|
|
snprintf (name, strlen (sprefix) + namelen + 1, "%s%s", sprefix, symname);
|
|
sym.name = name;
|
|
}
|
|
|
|
sym.value = codepos;
|
|
sym.the_bfd = abfd;
|
|
sym.section = codesec;
|
|
sym.flags = 0;
|
|
sym.udata.i = 0;
|
|
|
|
codepos += 24;
|
|
|
|
if (csym != NULL) {
|
|
*(csym[count]) = sym;
|
|
}
|
|
count++;
|
|
}
|
|
|
|
goto end;
|
|
|
|
end:
|
|
if (libraries != NULL) { free (libraries); }
|
|
if (imports != NULL) { free (imports); }
|
|
*nsym = count;
|
|
return 0;
|
|
|
|
error:
|
|
if (libraries != NULL) { free (libraries); }
|
|
if (imports != NULL) { free (imports); }
|
|
*nsym = count;
|
|
return -1;
|
|
}
|
|
|
|
static long bfd_pef_parse_symbols (abfd, csym)
|
|
bfd *abfd;
|
|
asymbol **csym;
|
|
{
|
|
unsigned long count = 0;
|
|
|
|
asection *codesec = NULL;
|
|
unsigned char *codebuf = NULL;
|
|
size_t codelen = 0;
|
|
|
|
asection *loadersec = NULL;
|
|
unsigned char *loaderbuf = NULL;
|
|
size_t loaderlen = 0;
|
|
|
|
codesec = bfd_get_section_by_name (abfd, "code");
|
|
if (codesec != NULL)
|
|
{
|
|
codelen = bfd_section_size (abfd, codesec);
|
|
codebuf = (unsigned char *) bfd_malloc (codelen);
|
|
if (bfd_seek (abfd, codesec->filepos, SEEK_SET) < 0) { goto end; }
|
|
if (bfd_bread ((PTR) codebuf, codelen, abfd) != codelen) { goto end; }
|
|
}
|
|
|
|
loadersec = bfd_get_section_by_name (abfd, "loader");
|
|
if (loadersec != NULL)
|
|
{
|
|
loaderlen = bfd_section_size (abfd, loadersec);
|
|
loaderbuf = (unsigned char *) bfd_malloc (loaderlen);
|
|
if (bfd_seek (abfd, loadersec->filepos, SEEK_SET) < 0) { goto end; }
|
|
if (bfd_bread ((PTR) loaderbuf, loaderlen, abfd) != loaderlen) { goto end; }
|
|
}
|
|
|
|
count = 0;
|
|
if (codesec != NULL)
|
|
{
|
|
unsigned long ncount = 0;
|
|
bfd_pef_parse_traceback_tables (abfd, codesec, codebuf, codelen, &ncount, csym);
|
|
count += ncount;
|
|
}
|
|
|
|
if ((codesec != NULL) && (loadersec != NULL))
|
|
{
|
|
unsigned long ncount = 0;
|
|
bfd_pef_parse_function_stubs
|
|
(abfd, codesec, codebuf, codelen, loaderbuf, loaderlen, &ncount,
|
|
(csym != NULL) ? (csym + count) : NULL);
|
|
count += ncount;
|
|
}
|
|
|
|
if (csym != NULL) {
|
|
csym[count] = NULL;
|
|
}
|
|
|
|
end:
|
|
if (codebuf != NULL)
|
|
free (codebuf);
|
|
|
|
if (loaderbuf != NULL)
|
|
free (loaderbuf);
|
|
|
|
return count;
|
|
}
|
|
|
|
static long
|
|
bfd_pef_count_symbols (abfd)
|
|
bfd *abfd;
|
|
{
|
|
return bfd_pef_parse_symbols (abfd, NULL);
|
|
}
|
|
|
|
static long
|
|
bfd_pef_get_symtab_upper_bound (abfd)
|
|
bfd *abfd;
|
|
{
|
|
long nsyms = bfd_pef_count_symbols (abfd);
|
|
if (nsyms < 0) { return nsyms; }
|
|
return ((nsyms + 1) * sizeof (asymbol *));
|
|
}
|
|
|
|
static long
|
|
bfd_pef_get_symtab (abfd, alocation)
|
|
bfd *abfd;
|
|
asymbol **alocation;
|
|
{
|
|
long i;
|
|
asymbol *syms;
|
|
long ret;
|
|
|
|
long nsyms = bfd_pef_count_symbols (abfd);
|
|
if (nsyms < 0) { return nsyms; }
|
|
|
|
syms = bfd_alloc (abfd, nsyms * sizeof (asymbol));
|
|
if (syms == NULL) { return -1; }
|
|
|
|
for (i = 0; i < nsyms; i++) {
|
|
alocation[i] = &syms[i];
|
|
}
|
|
alocation[nsyms] = NULL;
|
|
|
|
ret = bfd_pef_parse_symbols (abfd, alocation);
|
|
if (ret != nsyms) {
|
|
return 0;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static asymbol *
|
|
bfd_pef_make_empty_symbol (abfd)
|
|
bfd *abfd;
|
|
{
|
|
return (asymbol *) bfd_alloc (abfd, sizeof (asymbol));
|
|
}
|
|
|
|
static void
|
|
bfd_pef_get_symbol_info (abfd, symbol, ret)
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
|
asymbol *symbol;
|
|
symbol_info *ret;
|
|
{
|
|
bfd_symbol_info (symbol, ret);
|
|
}
|
|
|
|
static int
|
|
bfd_pef_sizeof_headers (abfd, exec)
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
|
boolean exec ATTRIBUTE_UNUSED;
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
const bfd_target pef_vec =
|
|
{
|
|
"pef", /* name */
|
|
bfd_target_pef_flavour, /* flavour */
|
|
BFD_ENDIAN_BIG, /* byteorder */
|
|
BFD_ENDIAN_BIG, /* header_byteorder */
|
|
(HAS_RELOC | EXEC_P | /* object flags */
|
|
HAS_LINENO | HAS_DEBUG |
|
|
HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
|
|
(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 */
|
|
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,
|
|
bfd_pef_object_p, /* bfd_check_format */
|
|
_bfd_dummy_target,
|
|
_bfd_dummy_target,
|
|
},
|
|
{ /* bfd_set_format */
|
|
bfd_false,
|
|
bfd_pef_mkobject,
|
|
bfd_false,
|
|
bfd_false,
|
|
},
|
|
{ /* bfd_write_contents */
|
|
bfd_false,
|
|
bfd_true,
|
|
bfd_false,
|
|
bfd_false,
|
|
},
|
|
|
|
BFD_JUMP_TABLE_GENERIC (bfd_pef),
|
|
BFD_JUMP_TABLE_COPY (_bfd_generic),
|
|
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
|
BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
|
|
BFD_JUMP_TABLE_SYMBOLS (bfd_pef),
|
|
BFD_JUMP_TABLE_RELOCS (bfd_pef),
|
|
BFD_JUMP_TABLE_WRITE (bfd_pef),
|
|
BFD_JUMP_TABLE_LINK (bfd_pef),
|
|
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
|
|
|
NULL,
|
|
|
|
NULL
|
|
};
|
|
|
|
#define bfd_pef_xlib_close_and_cleanup _bfd_generic_close_and_cleanup
|
|
#define bfd_pef_xlib_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
|
|
#define bfd_pef_xlib_new_section_hook _bfd_generic_new_section_hook
|
|
#define bfd_pef_xlib_get_section_contents _bfd_generic_get_section_contents
|
|
#define bfd_pef_xlib_set_section_contents _bfd_generic_set_section_contents
|
|
#define bfd_pef_xlib_get_section_contents_in_window _bfd_generic_get_section_contents_in_window
|
|
#define bfd_pef_xlib_set_section_contents_in_window _bfd_generic_set_section_contents_in_window
|
|
|
|
static int
|
|
bfd_pef_xlib_read_header (abfd, header)
|
|
bfd *abfd;
|
|
bfd_pef_xlib_header *header;
|
|
{
|
|
unsigned char buf[76];
|
|
|
|
bfd_seek (abfd, 0, SEEK_SET);
|
|
|
|
if (bfd_bread ((PTR) buf, 76, abfd) != 76) { return -1; }
|
|
|
|
header->tag1 = bfd_getb32 (buf);
|
|
header->tag2 = bfd_getb32 (buf + 4);
|
|
header->current_format = bfd_getb32 (buf + 8);
|
|
header->container_strings_offset = bfd_getb32 (buf + 12);
|
|
header->export_hash_offset = bfd_getb32 (buf + 16);
|
|
header->export_key_offset = bfd_getb32 (buf + 20);
|
|
header->export_symbol_offset = bfd_getb32 (buf + 24);
|
|
header->export_names_offset = bfd_getb32 (buf + 28);
|
|
header->export_hash_table_power = bfd_getb32 (buf + 32);
|
|
header->exported_symbol_count = bfd_getb32 (buf + 36);
|
|
header->frag_name_offset = bfd_getb32 (buf + 40);
|
|
header->frag_name_length = bfd_getb32 (buf + 44);
|
|
header->dylib_path_offset = bfd_getb32 (buf + 48);
|
|
header->dylib_path_length = bfd_getb32 (buf + 52);
|
|
header->cpu_family = bfd_getb32 (buf + 56);
|
|
header->cpu_model = bfd_getb32 (buf + 60);
|
|
header->date_time_stamp = bfd_getb32 (buf + 64);
|
|
header->current_version = bfd_getb32 (buf + 68);
|
|
header->old_definition_version = bfd_getb32 (buf + 72);
|
|
header->old_implementation_version = bfd_getb32 (buf + 76);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
bfd_pef_xlib_scan (abfd, header)
|
|
bfd *abfd;
|
|
bfd_pef_xlib_header *header;
|
|
{
|
|
bfd_pef_xlib_data_struct *mdata = NULL;
|
|
|
|
if ((header->tag1 != BFD_PEF_XLIB_TAG1)
|
|
|| ((header->tag2 != BFD_PEF_VLIB_TAG2) && (header->tag2 != BFD_PEF_BLIB_TAG2))) {
|
|
return -1;
|
|
}
|
|
|
|
mdata = ((bfd_pef_xlib_data_struct *)
|
|
bfd_alloc (abfd, sizeof (bfd_pef_xlib_data_struct)));
|
|
if (mdata == NULL) { return -1; }
|
|
|
|
mdata->header = *header;
|
|
|
|
abfd->flags = abfd->xvec->object_flags | (abfd->flags & (BFD_IN_MEMORY | BFD_IO_FUNCS));
|
|
|
|
abfd->tdata.pef_xlib_data = mdata;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const bfd_target *
|
|
bfd_pef_xlib_object_p (abfd)
|
|
bfd *abfd;
|
|
{
|
|
bfd_pef_xlib_header header;
|
|
|
|
abfd->tdata.pef_xlib_data = NULL;
|
|
|
|
if (bfd_pef_xlib_read_header (abfd, &header) != 0) {
|
|
abfd->tdata.pef_xlib_data = NULL;
|
|
bfd_set_error (bfd_error_wrong_format);
|
|
return NULL;
|
|
}
|
|
|
|
if (bfd_pef_xlib_scan (abfd, &header) != 0) {
|
|
abfd->tdata.pef_xlib_data = NULL;
|
|
bfd_set_error (bfd_error_wrong_format);
|
|
return NULL;
|
|
}
|
|
|
|
return abfd->xvec;
|
|
}
|
|
|
|
const bfd_target pef_xlib_vec =
|
|
{
|
|
"pef-xlib", /* name */
|
|
bfd_target_pef_xlib_flavour, /* flavour */
|
|
BFD_ENDIAN_BIG, /* byteorder */
|
|
BFD_ENDIAN_BIG, /* header_byteorder */
|
|
(HAS_RELOC | EXEC_P | /* object flags */
|
|
HAS_LINENO | HAS_DEBUG |
|
|
HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
|
|
(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 */
|
|
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,
|
|
bfd_pef_xlib_object_p, /* bfd_check_format */
|
|
_bfd_dummy_target,
|
|
_bfd_dummy_target,
|
|
},
|
|
{ /* bfd_set_format */
|
|
bfd_false,
|
|
bfd_pef_mkobject,
|
|
bfd_false,
|
|
bfd_false,
|
|
},
|
|
{ /* bfd_write_contents */
|
|
bfd_false,
|
|
bfd_true,
|
|
bfd_false,
|
|
bfd_false,
|
|
},
|
|
|
|
BFD_JUMP_TABLE_GENERIC (bfd_pef_xlib),
|
|
BFD_JUMP_TABLE_COPY (_bfd_generic),
|
|
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
|
BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
|
|
BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
|
|
BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
|
|
BFD_JUMP_TABLE_WRITE (_bfd_nowrite),
|
|
BFD_JUMP_TABLE_LINK (_bfd_nolink),
|
|
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
|
|
|
NULL,
|
|
|
|
NULL
|
|
};
|
|
|