| /* PEF support for BFD. |
| Copyright (C) 1999-2024 Free Software Foundation, Inc. |
| |
| This file is part of BFD, the Binary File Descriptor library. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 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. */ |
| |
| /* PEF (Preferred Executable Format) is the binary file format for late |
| classic Mac OS versions (before Darwin). It is supported by both m68k |
| and PowerPc. It is also called CFM (Code Fragment Manager). */ |
| |
| #include "sysdep.h" |
| #include "safe-ctype.h" |
| #include "pef.h" |
| #include "pef-traceback.h" |
| #include "bfd.h" |
| #include "libbfd.h" |
| #include "libiberty.h" |
| |
| #ifndef BFD_IO_FUNCS |
| #define BFD_IO_FUNCS 0 |
| #endif |
| |
| #define bfd_pef_close_and_cleanup _bfd_generic_close_and_cleanup |
| #define bfd_pef_bfd_free_cached_info _bfd_generic_bfd_free_cached_info |
| #define bfd_pef_new_section_hook _bfd_generic_new_section_hook |
| #define bfd_pef_bfd_is_local_label_name bfd_generic_is_local_label_name |
| #define bfd_pef_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false |
| #define bfd_pef_get_lineno _bfd_nosymbols_get_lineno |
| #define bfd_pef_find_nearest_line _bfd_nosymbols_find_nearest_line |
| #define bfd_pef_find_nearest_line_with_alt _bfd_nosymbols_find_nearest_line_with_alt |
| #define bfd_pef_find_line _bfd_nosymbols_find_line |
| #define bfd_pef_find_inliner_info _bfd_nosymbols_find_inliner_info |
| #define bfd_pef_get_symbol_version_string _bfd_nosymbols_get_symbol_version_string |
| #define bfd_pef_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol |
| #define bfd_pef_read_minisymbols _bfd_generic_read_minisymbols |
| #define bfd_pef_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol |
| #define bfd_pef_set_arch_mach _bfd_generic_set_arch_mach |
| #define bfd_pef_get_section_contents _bfd_generic_get_section_contents |
| #define bfd_pef_set_section_contents _bfd_generic_set_section_contents |
| #define bfd_pef_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents |
| #define bfd_pef_bfd_relax_section bfd_generic_relax_section |
| #define bfd_pef_bfd_gc_sections bfd_generic_gc_sections |
| #define bfd_pef_bfd_lookup_section_flags bfd_generic_lookup_section_flags |
| #define bfd_pef_bfd_merge_sections bfd_generic_merge_sections |
| #define bfd_pef_bfd_is_group_section bfd_generic_is_group_section |
| #define bfd_pef_bfd_group_name bfd_generic_group_name |
| #define bfd_pef_bfd_discard_group bfd_generic_discard_group |
| #define bfd_pef_section_already_linked _bfd_generic_section_already_linked |
| #define bfd_pef_bfd_define_common_symbol bfd_generic_define_common_symbol |
| #define bfd_pef_bfd_link_hide_symbol _bfd_generic_link_hide_symbol |
| #define bfd_pef_bfd_define_start_stop bfd_generic_define_start_stop |
| #define bfd_pef_bfd_link_hash_table_create _bfd_generic_link_hash_table_create |
| #define bfd_pef_bfd_link_add_symbols _bfd_generic_link_add_symbols |
| #define bfd_pef_bfd_link_just_syms _bfd_generic_link_just_syms |
| #define bfd_pef_bfd_copy_link_hash_symbol_type \ |
| _bfd_generic_copy_link_hash_symbol_type |
| #define bfd_pef_bfd_final_link _bfd_generic_final_link |
| #define bfd_pef_bfd_link_split_section _bfd_generic_link_split_section |
| #define bfd_pef_bfd_link_check_relocs _bfd_generic_link_check_relocs |
| |
| static int |
| bfd_pef_parse_traceback_table (bfd *abfd, |
| asection *section, |
| unsigned char *buf, |
| size_t len, |
| size_t pos, |
| asymbol *sym, |
| FILE *file) |
| { |
| struct traceback_table table; |
| size_t offset; |
| const char *s; |
| asymbol tmpsymbol; |
| |
| if (sym == NULL) |
| sym = & tmpsymbol; |
| |
| sym->name = NULL; |
| sym->value = 0; |
| sym->the_bfd = abfd; |
| sym->section = section; |
| sym->flags = 0; |
| sym->udata.i = 0; |
| |
| /* memcpy is fine since all fields are unsigned char. */ |
| if ((pos + 8) > len) |
| return -1; |
| memcpy (&table, buf + pos, 8); |
| |
| /* Calling code relies on returned symbols having a name and |
| correct offset. */ |
| if ((table.lang != TB_C) && (table.lang != TB_CPLUSPLUS)) |
| return -1; |
| |
| if (! (table.flags2 & TB_NAME_PRESENT)) |
| return -1; |
| |
| if (! (table.flags1 & TB_HAS_TBOFF)) |
| return -1; |
| |
| offset = 8; |
| |
| if ((table.flags5 & TB_FLOATPARAMS) || (table.fixedparams)) |
| offset += 4; |
| |
| if (table.flags1 & TB_HAS_TBOFF) |
| { |
| struct traceback_table_tboff off; |
| |
| if ((pos + offset + 4) > len) |
| return -1; |
| off.tb_offset = bfd_getb32 (buf + pos + offset); |
| offset += 4; |
| |
| /* Need to subtract 4 because the offset includes the 0x0L |
| preceding the table. */ |
| if (file != NULL) |
| fprintf (file, " [offset = 0x%lx]", off.tb_offset); |
| |
| if ((file == NULL) && ((off.tb_offset + 4) > (pos + offset))) |
| return -1; |
| |
| sym->value = pos - off.tb_offset - 4; |
| } |
| |
| if (table.flags2 & TB_INT_HNDL) |
| offset += 4; |
| |
| if (table.flags1 & TB_HAS_CTL) |
| { |
| struct traceback_table_anchors anchors; |
| |
| if ((pos + offset + 4) > len) |
| return -1; |
| anchors.ctl_info = bfd_getb32 (buf + pos + offset); |
| offset += 4; |
| |
| if (anchors.ctl_info > 1024) |
| return -1; |
| |
| offset += anchors.ctl_info * 4; |
| } |
| |
| if (table.flags2 & TB_NAME_PRESENT) |
| { |
| struct traceback_table_routine name; |
| char *namebuf; |
| |
| if ((pos + offset + 2) > len) |
| return -1; |
| name.name_len = bfd_getb16 (buf + pos + offset); |
| offset += 2; |
| |
| if (name.name_len > 4096) |
| return -1; |
| |
| if ((pos + offset + name.name_len) > len) |
| return -1; |
| |
| namebuf = bfd_alloc (abfd, name.name_len + 1); |
| if (namebuf == NULL) |
| return -1; |
| |
| memcpy (namebuf, buf + pos + offset, name.name_len); |
| namebuf[name.name_len] = '\0'; |
| |
| /* Strip leading period inserted by compiler. */ |
| if (namebuf[0] == '.') |
| memmove (namebuf, namebuf + 1, name.name_len); |
| |
| sym->name = namebuf; |
| |
| for (s = sym->name; (*s != '\0'); s++) |
| if (! ISPRINT (*s)) |
| return -1; |
| |
| offset += name.name_len; |
| } |
| |
| if (table.flags2 & TB_USES_ALLOCA) |
| offset += 4; |
| |
| if (table.flags4 & TB_HAS_VEC_INFO) |
| offset += 4; |
| |
| if (file != NULL) |
| fprintf (file, " [length = 0x%lx]", (unsigned long) offset); |
| |
| return offset; |
| } |
| |
| static void |
| bfd_pef_print_symbol (bfd *abfd, |
| void * afile, |
| asymbol *symbol, |
| bfd_print_symbol_type how) |
| { |
| FILE *file = (FILE *) afile; |
| |
| switch (how) |
| { |
| case bfd_print_symbol_name: |
| fprintf (file, "%s", symbol->name); |
| break; |
| default: |
| bfd_print_symbol_vandf (abfd, (void *) file, symbol); |
| fprintf (file, " %-5s %s", symbol->section->name, symbol->name); |
| if (startswith (symbol->name, "__traceback_")) |
| { |
| unsigned char *buf; |
| size_t offset = symbol->value + 4; |
| size_t len = symbol->udata.i; |
| |
| buf = bfd_malloc (len); |
| if (buf == NULL |
| || !bfd_get_section_contents (abfd, symbol->section, buf, |
| offset, len) |
| || bfd_pef_parse_traceback_table (abfd, symbol->section, buf, |
| len, 0, NULL, file) < 0) |
| fprintf (file, " [ERROR]"); |
| free (buf); |
| } |
| } |
| } |
| |
| static void |
| bfd_pef_convert_architecture (unsigned long architecture, |
| enum bfd_architecture *type, |
| unsigned long *subtype) |
| { |
| const unsigned long ARCH_POWERPC = 0x70777063; /* 'pwpc'. */ |
| const unsigned long ARCH_M68K = 0x6d36386b; /* 'm68k'. */ |
| |
| *subtype = bfd_arch_unknown; |
| *type = bfd_arch_unknown; |
| |
| if (architecture == ARCH_POWERPC) |
| *type = bfd_arch_powerpc; |
| else if (architecture == ARCH_M68K) |
| *type = bfd_arch_m68k; |
| } |
| |
| static bool |
| bfd_pef_mkobject (bfd *abfd ATTRIBUTE_UNUSED) |
| { |
| return true; |
| } |
| |
| static const char *bfd_pef_section_name (bfd_pef_section *section) |
| { |
| switch (section->section_kind) |
| { |
| case BFD_PEF_SECTION_CODE: return "code"; |
| case BFD_PEF_SECTION_UNPACKED_DATA: return "unpacked-data"; |
| case BFD_PEF_SECTION_PACKED_DATA: return "packed-data"; |
| case BFD_PEF_SECTION_CONSTANT: return "constant"; |
| case BFD_PEF_SECTION_LOADER: return "loader"; |
| case BFD_PEF_SECTION_DEBUG: return "debug"; |
| case BFD_PEF_SECTION_EXEC_DATA: return "exec-data"; |
| case BFD_PEF_SECTION_EXCEPTION: return "exception"; |
| case BFD_PEF_SECTION_TRACEBACK: return "traceback"; |
| default: return "unknown"; |
| } |
| } |
| |
| static unsigned long bfd_pef_section_flags (bfd_pef_section *section) |
| { |
| switch (section->section_kind) |
| { |
| case BFD_PEF_SECTION_CODE: |
| return SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC | SEC_CODE; |
| case BFD_PEF_SECTION_UNPACKED_DATA: |
| case BFD_PEF_SECTION_PACKED_DATA: |
| case BFD_PEF_SECTION_CONSTANT: |
| case BFD_PEF_SECTION_LOADER: |
| case BFD_PEF_SECTION_DEBUG: |
| case BFD_PEF_SECTION_EXEC_DATA: |
| case BFD_PEF_SECTION_EXCEPTION: |
| case BFD_PEF_SECTION_TRACEBACK: |
| default: |
| return SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC; |
| } |
| } |
| |
| static asection * |
| bfd_pef_make_bfd_section (bfd *abfd, bfd_pef_section *section) |
| { |
| asection *bfdsec; |
| const char *name = bfd_pef_section_name (section); |
| |
| bfdsec = bfd_make_section_anyway (abfd, name); |
| if (bfdsec == NULL) |
| return NULL; |
| |
| bfdsec->vma = section->default_address + section->container_offset; |
| bfdsec->lma = section->default_address + section->container_offset; |
| bfdsec->size = section->container_length; |
| bfdsec->filepos = section->container_offset; |
| bfdsec->alignment_power = section->alignment; |
| |
| bfdsec->flags = bfd_pef_section_flags (section); |
| |
| return bfdsec; |
| } |
| |
| int |
| bfd_pef_parse_loader_header (bfd *abfd ATTRIBUTE_UNUSED, |
| unsigned char *buf, |
| size_t len, |
| bfd_pef_loader_header *header) |
| { |
| BFD_ASSERT (len == 56); |
| |
| header->main_section = bfd_getb32 (buf); |
| header->main_offset = bfd_getb32 (buf + 4); |
| header->init_section = bfd_getb32 (buf + 8); |
| header->init_offset = bfd_getb32 (buf + 12); |
| header->term_section = bfd_getb32 (buf + 16); |
| header->term_offset = bfd_getb32 (buf + 20); |
| header->imported_library_count = bfd_getb32 (buf + 24); |
| header->total_imported_symbol_count = bfd_getb32 (buf + 28); |
| header->reloc_section_count = bfd_getb32 (buf + 32); |
| header->reloc_instr_offset = bfd_getb32 (buf + 36); |
| header->loader_strings_offset = bfd_getb32 (buf + 40); |
| header->export_hash_offset = bfd_getb32 (buf + 44); |
| header->export_hash_table_power = bfd_getb32 (buf + 48); |
| header->exported_symbol_count = bfd_getb32 (buf + 52); |
| |
| return 0; |
| } |
| |
| int |
| bfd_pef_parse_imported_library (bfd *abfd ATTRIBUTE_UNUSED, |
| unsigned char *buf, |
| size_t len, |
| bfd_pef_imported_library *header) |
| { |
| BFD_ASSERT (len == 24); |
| |
| header->name_offset = bfd_getb32 (buf); |
| header->old_implementation_version = bfd_getb32 (buf + 4); |
| header->current_version = bfd_getb32 (buf + 8); |
| header->imported_symbol_count = bfd_getb32 (buf + 12); |
| header->first_imported_symbol = bfd_getb32 (buf + 16); |
| header->options = buf[20]; |
| header->reserved_a = buf[21]; |
| header->reserved_b = bfd_getb16 (buf + 22); |
| |
| return 0; |
| } |
| |
| int |
| bfd_pef_parse_imported_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
| unsigned char *buf, |
| size_t len, |
| bfd_pef_imported_symbol *symbol) |
| { |
| unsigned long value; |
| |
| BFD_ASSERT (len == 4); |
| |
| value = bfd_getb32 (buf); |
| symbol->symbol_class = value >> 24; |
| symbol->name = value & 0x00ffffff; |
| |
| return 0; |
| } |
| |
| int |
| bfd_pef_scan_section (bfd *abfd, bfd_pef_section *section) |
| { |
| unsigned char buf[28]; |
| |
| if (bfd_seek (abfd, section->header_offset, SEEK_SET) != 0 |
| || bfd_read (buf, 28, abfd) != 28) |
| return -1; |
| |
| section->name_offset = bfd_h_get_32 (abfd, buf); |
| section->default_address = bfd_h_get_32 (abfd, buf + 4); |
| section->total_length = bfd_h_get_32 (abfd, buf + 8); |
| section->unpacked_length = bfd_h_get_32 (abfd, buf + 12); |
| section->container_length = bfd_h_get_32 (abfd, buf + 16); |
| section->container_offset = bfd_h_get_32 (abfd, buf + 20); |
| section->section_kind = buf[24]; |
| section->share_kind = buf[25]; |
| section->alignment = buf[26]; |
| section->reserved = buf[27]; |
| |
| section->bfd_section = bfd_pef_make_bfd_section (abfd, section); |
| if (section->bfd_section == NULL) |
| return -1; |
| |
| return 0; |
| } |
| |
| void |
| bfd_pef_print_loader_header (bfd *abfd ATTRIBUTE_UNUSED, |
| bfd_pef_loader_header *header, |
| FILE *file) |
| { |
| fprintf (file, "main_section: %ld\n", header->main_section); |
| fprintf (file, "main_offset: %lu\n", header->main_offset); |
| fprintf (file, "init_section: %ld\n", header->init_section); |
| 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 (bfd *abfd, FILE *file) |
| { |
| bfd_pef_loader_header header; |
| asection *loadersec = NULL; |
| unsigned char *loaderbuf = NULL; |
| size_t loaderlen = 0; |
| |
| loadersec = bfd_get_section_by_name (abfd, "loader"); |
| if (loadersec == NULL) |
| return -1; |
| |
| loaderlen = loadersec->size; |
| if (loaderlen < 56) |
| return -1; |
| if (bfd_seek (abfd, loadersec->filepos, SEEK_SET) != 0) |
| return -1; |
| loaderbuf = _bfd_malloc_and_read (abfd, loaderlen, loaderlen); |
| if (loaderbuf == NULL) |
| return -1; |
| |
| if (bfd_pef_parse_loader_header (abfd, loaderbuf, 56, &header) < 0) |
| { |
| free (loaderbuf); |
| return -1; |
| } |
| |
| bfd_pef_print_loader_header (abfd, &header, file); |
| return 0; |
| } |
| |
| int |
| bfd_pef_scan_start_address (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 = loadersec->size; |
| if (loaderlen < 56) |
| goto error; |
| if (bfd_seek (abfd, loadersec->filepos, SEEK_SET) != 0) |
| goto error; |
| loaderbuf = _bfd_malloc_and_read (abfd, loaderlen, loaderlen); |
| if (loaderbuf == NULL) |
| 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 ((long) (section->index + 1) == header.main_section) |
| break; |
| |
| if (section == NULL) |
| goto error; |
| |
| abfd->start_address = section->vma + header.main_offset; |
| |
| end: |
| free (loaderbuf); |
| return 0; |
| |
| error: |
| free (loaderbuf); |
| return -1; |
| } |
| |
| int |
| bfd_pef_scan (bfd *abfd, |
| bfd_pef_header *header, |
| bfd_pef_data_struct *mdata) |
| { |
| unsigned int i; |
| enum bfd_architecture cputype; |
| unsigned long cpusubtype; |
| |
| mdata->header = *header; |
| |
| bfd_pef_convert_architecture (header->architecture, &cputype, &cpusubtype); |
| if (cputype == bfd_arch_unknown) |
| { |
| _bfd_error_handler (_("bfd_pef_scan: unknown architecture 0x%lx"), |
| 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_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) |
| return -1; |
| |
| abfd->tdata.pef_data = mdata; |
| |
| return 0; |
| } |
| |
| static int |
| bfd_pef_read_header (bfd *abfd, bfd_pef_header *header) |
| { |
| unsigned char buf[40]; |
| |
| if (bfd_seek (abfd, 0, SEEK_SET) != 0 |
| || bfd_read (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 bfd_cleanup |
| bfd_pef_object_p (bfd *abfd) |
| { |
| bfd_pef_header header; |
| bfd_pef_data_struct *mdata; |
| |
| if (bfd_pef_read_header (abfd, &header) != 0) |
| goto wrong; |
| |
| if (header.tag1 != BFD_PEF_TAG1 || header.tag2 != BFD_PEF_TAG2) |
| goto wrong; |
| |
| mdata = (bfd_pef_data_struct *) bfd_zalloc (abfd, sizeof (*mdata)); |
| if (mdata == NULL) |
| goto fail; |
| |
| if (bfd_pef_scan (abfd, &header, mdata)) |
| goto wrong; |
| |
| return _bfd_no_cleanup; |
| |
| wrong: |
| bfd_set_error (bfd_error_wrong_format); |
| |
| fail: |
| return NULL; |
| } |
| |
| static int |
| bfd_pef_parse_traceback_tables (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, (void *) 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 (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 (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; |
| |
| if ((loaderlen - 56) / 24 < header.imported_library_count) |
| goto error; |
| |
| if ((loaderlen - 56 - header.imported_library_count * 24) / 4 |
| < header.total_imported_symbol_count) |
| goto error; |
| |
| libraries = bfd_malloc |
| (header.imported_library_count * sizeof (bfd_pef_imported_library)); |
| imports = bfd_malloc |
| (header.total_imported_symbol_count * sizeof (bfd_pef_imported_symbol)); |
| if (libraries == NULL || imports == NULL) |
| 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; |
| } |
| |
| 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 sym_index; |
| |
| 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 + 24) > codelen) |
| break; |
| |
| ret = bfd_pef_parse_function_stub (abfd, codebuf + codepos, 24, &sym_index); |
| if (ret < 0) |
| { |
| codepos += 24; |
| continue; |
| } |
| |
| if (sym_index >= header.total_imported_symbol_count) |
| { |
| codepos += 24; |
| continue; |
| } |
| |
| { |
| size_t max, namelen; |
| const char *s; |
| |
| if (loaderlen < (header.loader_strings_offset + imports[sym_index].name)) |
| goto error; |
| |
| max = loaderlen - (header.loader_strings_offset + imports[sym_index].name); |
| symname = (char *) loaderbuf; |
| symname += header.loader_strings_offset + imports[sym_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: |
| free (libraries); |
| free (imports); |
| *nsym = count; |
| return 0; |
| |
| error: |
| free (libraries); |
| free (imports); |
| *nsym = count; |
| return -1; |
| } |
| |
| static long |
| bfd_pef_parse_symbols (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 = codesec->size; |
| if (bfd_seek (abfd, codesec->filepos, SEEK_SET) != 0) |
| goto end; |
| codebuf = _bfd_malloc_and_read (abfd, codelen, codelen); |
| if (codebuf == NULL) |
| goto end; |
| } |
| |
| loadersec = bfd_get_section_by_name (abfd, "loader"); |
| if (loadersec != NULL) |
| { |
| loaderlen = loadersec->size; |
| if (bfd_seek (abfd, loadersec->filepos, SEEK_SET) != 0) |
| goto end; |
| loaderbuf = _bfd_malloc_and_read (abfd, loaderlen, loaderlen); |
| if (loaderbuf == NULL) |
| goto end; |
| } |
| |
| count = 0; |
| if (codesec != NULL) |
| { |
| 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: |
| free (codebuf); |
| free (loaderbuf); |
| return count; |
| } |
| |
| static long |
| bfd_pef_count_symbols (bfd *abfd) |
| { |
| return bfd_pef_parse_symbols (abfd, NULL); |
| } |
| |
| static long |
| bfd_pef_get_symtab_upper_bound (bfd *abfd) |
| { |
| long nsyms = bfd_pef_count_symbols (abfd); |
| |
| if (nsyms < 0) |
| return nsyms; |
| return ((nsyms + 1) * sizeof (asymbol *)); |
| } |
| |
| static long |
| bfd_pef_canonicalize_symtab (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; |
| } |
| |
| #define bfd_pef_make_empty_symbol _bfd_generic_make_empty_symbol |
| |
| static void |
| bfd_pef_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
| asymbol *symbol, |
| symbol_info *ret) |
| { |
| bfd_symbol_info (symbol, ret); |
| } |
| |
| static int |
| bfd_pef_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED, |
| struct bfd_link_info *info 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. */ |
| 0, /* 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. */ |
| bfd_getb64, bfd_getb_signed_64, bfd_putb64, |
| bfd_getb32, bfd_getb_signed_32, bfd_putb32, |
| bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Headers. */ |
| { /* bfd_check_format. */ |
| _bfd_dummy_target, |
| bfd_pef_object_p, /* bfd_check_format. */ |
| _bfd_dummy_target, |
| _bfd_dummy_target, |
| }, |
| { /* bfd_set_format. */ |
| _bfd_bool_bfd_false_error, |
| bfd_pef_mkobject, |
| _bfd_bool_bfd_false_error, |
| _bfd_bool_bfd_false_error, |
| }, |
| { /* bfd_write_contents. */ |
| _bfd_bool_bfd_false_error, |
| _bfd_bool_bfd_true, |
| _bfd_bool_bfd_false_error, |
| _bfd_bool_bfd_false_error, |
| }, |
| |
| 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_norelocs), |
| 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_set_section_contents_in_window _bfd_generic_set_section_contents_in_window |
| |
| static int |
| bfd_pef_xlib_read_header (bfd *abfd, bfd_pef_xlib_header *header) |
| { |
| unsigned char buf[80]; |
| |
| if (bfd_seek (abfd, 0, SEEK_SET) != 0 |
| || bfd_read (buf, sizeof buf, abfd) != sizeof buf) |
| 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; |
| } |
| |
| static int |
| bfd_pef_xlib_scan (bfd *abfd, bfd_pef_xlib_header *header) |
| { |
| bfd_pef_xlib_data_struct *mdata = NULL; |
| |
| mdata = bfd_alloc (abfd, sizeof (* mdata)); |
| 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 bfd_cleanup |
| bfd_pef_xlib_object_p (bfd *abfd) |
| { |
| bfd_pef_xlib_header header; |
| |
| if (bfd_pef_xlib_read_header (abfd, &header) != 0) |
| { |
| bfd_set_error (bfd_error_wrong_format); |
| return NULL; |
| } |
| |
| if ((header.tag1 != BFD_PEF_XLIB_TAG1) |
| || ((header.tag2 != BFD_PEF_VLIB_TAG2) |
| && (header.tag2 != BFD_PEF_BLIB_TAG2))) |
| { |
| bfd_set_error (bfd_error_wrong_format); |
| return NULL; |
| } |
| |
| if (bfd_pef_xlib_scan (abfd, &header) != 0) |
| { |
| bfd_set_error (bfd_error_wrong_format); |
| return NULL; |
| } |
| |
| return _bfd_no_cleanup; |
| } |
| |
| 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. */ |
| 0, /* 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. */ |
| bfd_getb64, bfd_getb_signed_64, bfd_putb64, |
| bfd_getb32, bfd_getb_signed_32, bfd_putb32, |
| bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Headers. */ |
| { /* bfd_check_format. */ |
| _bfd_dummy_target, |
| bfd_pef_xlib_object_p, /* bfd_check_format. */ |
| _bfd_dummy_target, |
| _bfd_dummy_target, |
| }, |
| { /* bfd_set_format. */ |
| _bfd_bool_bfd_false_error, |
| bfd_pef_mkobject, |
| _bfd_bool_bfd_false_error, |
| _bfd_bool_bfd_false_error, |
| }, |
| { /* bfd_write_contents. */ |
| _bfd_bool_bfd_false_error, |
| _bfd_bool_bfd_true, |
| _bfd_bool_bfd_false_error, |
| _bfd_bool_bfd_false_error, |
| }, |
| |
| 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 |
| }; |