/* Mach-O support for BFD. Copyright 1999, 2000, 2001, 2002 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "mach-o.h" #include "bfd.h" #include "sysdep.h" #include "libbfd.h" #include "libiberty.h" #include <ctype.h> #ifndef BFD_IO_FUNCS #define BFD_IO_FUNCS 0 #endif #define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive #define bfd_mach_o_read_ar_hdr _bfd_noarchive_read_ar_hdr #define bfd_mach_o_slurp_armap _bfd_noarchive_slurp_armap #define bfd_mach_o_slurp_extended_name_table _bfd_noarchive_slurp_extended_name_table #define bfd_mach_o_construct_extended_name_table _bfd_noarchive_construct_extended_name_table #define bfd_mach_o_truncate_arname _bfd_noarchive_truncate_arname #define bfd_mach_o_write_armap _bfd_noarchive_write_armap #define bfd_mach_o_get_elt_at_index _bfd_noarchive_get_elt_at_index #define bfd_mach_o_generic_stat_arch_elt _bfd_noarchive_generic_stat_arch_elt #define bfd_mach_o_update_armap_timestamp _bfd_noarchive_update_armap_timestamp #define bfd_mach_o_close_and_cleanup _bfd_generic_close_and_cleanup #define bfd_mach_o_bfd_free_cached_info _bfd_generic_bfd_free_cached_info #define bfd_mach_o_new_section_hook _bfd_generic_new_section_hook #define bfd_mach_o_get_section_contents_in_window _bfd_generic_get_section_contents_in_window #define bfd_mach_o_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name #define bfd_mach_o_get_lineno _bfd_nosymbols_get_lineno #define bfd_mach_o_find_nearest_line _bfd_nosymbols_find_nearest_line #define bfd_mach_o_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol #define bfd_mach_o_read_minisymbols _bfd_generic_read_minisymbols #define bfd_mach_o_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol #define bfd_mach_o_get_reloc_upper_bound _bfd_norelocs_get_reloc_upper_bound #define bfd_mach_o_canonicalize_reloc _bfd_norelocs_canonicalize_reloc #define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup #define bfd_mach_o_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents #define bfd_mach_o_bfd_relax_section bfd_generic_relax_section #define bfd_mach_o_bfd_link_hash_table_create _bfd_generic_link_hash_table_create #define bfd_mach_o_bfd_link_hash_table_free _bfd_generic_link_hash_table_free #define bfd_mach_o_bfd_link_add_symbols _bfd_generic_link_add_symbols #define bfd_mach_o_bfd_link_just_syms _bfd_generic_link_just_syms #define bfd_mach_o_bfd_final_link _bfd_generic_final_link #define bfd_mach_o_bfd_link_split_section _bfd_generic_link_split_section #define bfd_mach_o_set_arch_mach bfd_default_set_arch_mach #define bfd_mach_o_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data #define bfd_mach_o_bfd_set_private_flags _bfd_generic_bfd_set_private_flags #define bfd_mach_o_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data #define bfd_mach_o_get_section_contents _bfd_generic_get_section_contents #define bfd_mach_o_set_section_contents _bfd_generic_set_section_contents #define bfd_mach_o_bfd_gc_sections bfd_generic_gc_sections #define bfd_mach_o_bfd_merge_sections bfd_generic_merge_sections #define bfd_mach_o_bfd_discard_group bfd_generic_discard_group static bfd_boolean bfd_mach_o_bfd_copy_private_symbol_data PARAMS ((bfd *, asymbol *, bfd *, asymbol *)); static bfd_boolean bfd_mach_o_bfd_copy_private_section_data PARAMS ((bfd *, asection *, bfd *, asection *)); static bfd_boolean bfd_mach_o_bfd_copy_private_bfd_data PARAMS ((bfd *, bfd *)); static long bfd_mach_o_count_symbols PARAMS ((bfd *)); static long bfd_mach_o_get_symtab_upper_bound PARAMS ((bfd *)); static long bfd_mach_o_get_symtab PARAMS ((bfd *, asymbol **)); static void bfd_mach_o_get_symbol_info PARAMS ((bfd *, asymbol *, symbol_info *)); static void bfd_mach_o_print_symbol PARAMS ((bfd *, PTR, asymbol *, bfd_print_symbol_type)); static void bfd_mach_o_convert_architecture PARAMS ((bfd_mach_o_cpu_type, bfd_mach_o_cpu_subtype, enum bfd_architecture *, unsigned long *)); static bfd_boolean bfd_mach_o_write_contents PARAMS ((bfd *)); static int bfd_mach_o_sizeof_headers PARAMS ((bfd *, bfd_boolean)); static asymbol * bfd_mach_o_make_empty_symbol PARAMS ((bfd *)); static int bfd_mach_o_write_header PARAMS ((bfd *, bfd_mach_o_header *)); static int bfd_mach_o_read_header PARAMS ((bfd *, bfd_mach_o_header *)); static asection * bfd_mach_o_make_bfd_section PARAMS ((bfd *, bfd_mach_o_section *)); static int bfd_mach_o_scan_read_section PARAMS ((bfd *, bfd_mach_o_section *, bfd_vma)); static int bfd_mach_o_scan_write_section PARAMS ((bfd *, bfd_mach_o_section *, bfd_vma)); static int bfd_mach_o_scan_write_symtab_symbols PARAMS ((bfd *, bfd_mach_o_load_command *)); static int bfd_mach_o_scan_write_thread PARAMS ((bfd *, bfd_mach_o_load_command *)); static int bfd_mach_o_scan_read_dylinker PARAMS ((bfd *, bfd_mach_o_load_command *)); static int bfd_mach_o_scan_read_dylib PARAMS ((bfd *, bfd_mach_o_load_command *)); static int bfd_mach_o_scan_read_prebound_dylib PARAMS ((bfd *, bfd_mach_o_load_command *)); static int bfd_mach_o_scan_read_thread PARAMS ((bfd *, bfd_mach_o_load_command *)); static int bfd_mach_o_scan_write_symtab PARAMS ((bfd *, bfd_mach_o_load_command *)); static int bfd_mach_o_scan_read_dysymtab PARAMS ((bfd *, bfd_mach_o_load_command *)); static int bfd_mach_o_scan_read_symtab PARAMS ((bfd *, bfd_mach_o_load_command *)); static int bfd_mach_o_scan_read_segment PARAMS ((bfd *, bfd_mach_o_load_command *)); static int bfd_mach_o_scan_write_segment PARAMS ((bfd *, bfd_mach_o_load_command *)); static int bfd_mach_o_scan_read_command PARAMS ((bfd *, bfd_mach_o_load_command *)); static void bfd_mach_o_flatten_sections PARAMS ((bfd *)); static const char * bfd_mach_o_i386_flavour_string PARAMS ((unsigned int)); static const char * bfd_mach_o_ppc_flavour_string PARAMS ((unsigned int)); /* The flags field of a section structure is separated into two parts a section type and section attributes. The section types are mutually exclusive (it can only have one type) but the section attributes are not (it may have more than one attribute). */ #define SECTION_TYPE 0x000000ff /* 256 section types. */ #define SECTION_ATTRIBUTES 0xffffff00 /* 24 section attributes. */ /* Constants for the section attributes part of the flags field of a section structure. */ #define SECTION_ATTRIBUTES_USR 0xff000000 /* User-settable attributes. */ #define S_ATTR_PURE_INSTRUCTIONS 0x80000000 /* Section contains only true machine instructions. */ #define SECTION_ATTRIBUTES_SYS 0x00ffff00 /* System setable attributes. */ #define S_ATTR_SOME_INSTRUCTIONS 0x00000400 /* Section contains some machine instructions. */ #define S_ATTR_EXT_RELOC 0x00000200 /* Section has external relocation entries. */ #define S_ATTR_LOC_RELOC 0x00000100 /* Section has local relocation entries. */ #define N_STAB 0xe0 #define N_TYPE 0x1e #define N_EXT 0x01 #define N_UNDF 0x0 #define N_ABS 0x2 #define N_SECT 0xe #define N_INDR 0xa bfd_boolean bfd_mach_o_valid (abfd) bfd *abfd; { if (abfd == NULL || abfd->xvec == NULL) return 0; if (! ((abfd->xvec == &mach_o_be_vec) || (abfd->xvec == &mach_o_le_vec) || (abfd->xvec == &mach_o_fat_vec))) return 0; if (abfd->tdata.mach_o_data == NULL) return 0; return 1; } /* Copy any private info we understand from the input symbol to the output symbol. */ static bfd_boolean bfd_mach_o_bfd_copy_private_symbol_data (ibfd, isymbol, obfd, osymbol) bfd *ibfd ATTRIBUTE_UNUSED; asymbol *isymbol ATTRIBUTE_UNUSED; bfd *obfd ATTRIBUTE_UNUSED; asymbol *osymbol ATTRIBUTE_UNUSED; { return TRUE; } /* Copy any private info we understand from the input section to the output section. */ static bfd_boolean bfd_mach_o_bfd_copy_private_section_data (ibfd, isection, obfd, osection) bfd *ibfd ATTRIBUTE_UNUSED; asection *isection ATTRIBUTE_UNUSED; bfd *obfd ATTRIBUTE_UNUSED; asection *osection ATTRIBUTE_UNUSED; { return TRUE; } /* Copy any private info we understand from the input bfd to the output bfd. */ static bfd_boolean bfd_mach_o_bfd_copy_private_bfd_data (ibfd, obfd) bfd *ibfd; bfd *obfd; { BFD_ASSERT (bfd_mach_o_valid (ibfd)); BFD_ASSERT (bfd_mach_o_valid (obfd)); obfd->tdata.mach_o_data = ibfd->tdata.mach_o_data; obfd->tdata.mach_o_data->ibfd = ibfd; return TRUE; } static long bfd_mach_o_count_symbols (abfd) bfd *abfd; { bfd_mach_o_data_struct *mdata = NULL; long nsyms = 0; unsigned long i; BFD_ASSERT (bfd_mach_o_valid (abfd)); mdata = abfd->tdata.mach_o_data; for (i = 0; i < mdata->header.ncmds; i++) if (mdata->commands[i].type == BFD_MACH_O_LC_SYMTAB) { bfd_mach_o_symtab_command *sym = &mdata->commands[i].command.symtab; nsyms += sym->nsyms; } return nsyms; } static long bfd_mach_o_get_symtab_upper_bound (abfd) bfd *abfd; { long nsyms = bfd_mach_o_count_symbols (abfd); if (nsyms < 0) return nsyms; return ((nsyms + 1) * sizeof (asymbol *)); } static long bfd_mach_o_get_symtab (abfd, alocation) bfd *abfd; asymbol **alocation; { bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; long nsyms = bfd_mach_o_count_symbols (abfd); asymbol **csym = alocation; unsigned long i, j; if (nsyms < 0) return nsyms; for (i = 0; i < mdata->header.ncmds; i++) { if (mdata->commands[i].type == BFD_MACH_O_LC_SYMTAB) { bfd_mach_o_symtab_command *sym = &mdata->commands[i].command.symtab; if (bfd_mach_o_scan_read_symtab_symbols (abfd, &mdata->commands[i].command.symtab) != 0) { fprintf (stderr, "bfd_mach_o_get_symtab: unable to load symbols for section %lu\n", i); return 0; } BFD_ASSERT (sym->symbols != NULL); for (j = 0; j < sym->nsyms; j++) { BFD_ASSERT (csym < (alocation + nsyms)); *csym++ = &sym->symbols[j]; } } } *csym++ = NULL; return nsyms; } static void bfd_mach_o_get_symbol_info (abfd, symbol, ret) bfd *abfd ATTRIBUTE_UNUSED; asymbol *symbol; symbol_info *ret; { bfd_symbol_info (symbol, ret); } static void bfd_mach_o_print_symbol (abfd, afile, symbol, how) bfd *abfd; PTR 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, (PTR) file, symbol); fprintf (file, " %-5s %s", symbol->section->name, symbol->name); } } static void bfd_mach_o_convert_architecture (mtype, msubtype, type, subtype) bfd_mach_o_cpu_type mtype; bfd_mach_o_cpu_subtype msubtype ATTRIBUTE_UNUSED; enum bfd_architecture *type; unsigned long *subtype; { *subtype = bfd_arch_unknown; switch (mtype) { case BFD_MACH_O_CPU_TYPE_VAX: *type = bfd_arch_vax; break; case BFD_MACH_O_CPU_TYPE_MC680x0: *type = bfd_arch_m68k; break; case BFD_MACH_O_CPU_TYPE_I386: *type = bfd_arch_i386; break; case BFD_MACH_O_CPU_TYPE_MIPS: *type = bfd_arch_mips; break; case BFD_MACH_O_CPU_TYPE_MC98000: *type = bfd_arch_m98k; break; case BFD_MACH_O_CPU_TYPE_HPPA: *type = bfd_arch_hppa; break; case BFD_MACH_O_CPU_TYPE_ARM: *type = bfd_arch_arm; break; case BFD_MACH_O_CPU_TYPE_MC88000: *type = bfd_arch_m88k; break; case BFD_MACH_O_CPU_TYPE_SPARC: *type = bfd_arch_sparc; break; case BFD_MACH_O_CPU_TYPE_I860: *type = bfd_arch_i860; break; case BFD_MACH_O_CPU_TYPE_ALPHA: *type = bfd_arch_alpha; break; case BFD_MACH_O_CPU_TYPE_POWERPC: *type = bfd_arch_powerpc; break; default: *type = bfd_arch_unknown; break; } switch (*type) { case bfd_arch_i386: *subtype = bfd_mach_i386_i386; break; case bfd_arch_sparc: *subtype = bfd_mach_sparc; break; default: *subtype = bfd_arch_unknown; } } static bfd_boolean bfd_mach_o_write_contents (abfd) bfd *abfd; { unsigned int i; asection *s; bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; /* Write data sections first in case they overlap header data to be written later. */ for (s = abfd->sections; s != (asection *) NULL; s = s->next) ; #if 0 for (i = 0; i < mdata->header.ncmds; i++) { bfd_mach_o_load_command *cur = &mdata->commands[i]; if (cur->type != BFD_MACH_O_LC_SEGMENT) break; { bfd_mach_o_segment_command *seg = &cur->command.segment; char buf[1024]; bfd_vma nbytes = seg->filesize; bfd_vma curoff = seg->fileoff; while (nbytes > 0) { bfd_vma thisread = nbytes; if (thisread > 1024) thisread = 1024; bfd_seek (abfd, curoff, SEEK_SET); if (bfd_bread ((PTR) buf, thisread, abfd) != thisread) return FALSE; bfd_seek (abfd, curoff, SEEK_SET); if (bfd_bwrite ((PTR) buf, thisread, abfd) != thisread) return FALSE; nbytes -= thisread; curoff += thisread; } } } #endif /* Now write header information. */ if (bfd_mach_o_write_header (abfd, &mdata->header) != 0) return FALSE; for (i = 0; i < mdata->header.ncmds; i++) { unsigned char buf[8]; bfd_mach_o_load_command *cur = &mdata->commands[i]; unsigned long typeflag; typeflag = cur->type_required ? cur->type & BFD_MACH_O_LC_REQ_DYLD : cur->type; bfd_h_put_32 (abfd, typeflag, buf); bfd_h_put_32 (abfd, cur->len, buf + 4); bfd_seek (abfd, cur->offset, SEEK_SET); if (bfd_bwrite ((PTR) buf, 8, abfd) != 8) return FALSE; switch (cur->type) { case BFD_MACH_O_LC_SEGMENT: if (bfd_mach_o_scan_write_segment (abfd, cur) != 0) return FALSE; break; case BFD_MACH_O_LC_SYMTAB: if (bfd_mach_o_scan_write_symtab (abfd, cur) != 0) return FALSE; break; case BFD_MACH_O_LC_SYMSEG: break; case BFD_MACH_O_LC_THREAD: case BFD_MACH_O_LC_UNIXTHREAD: if (bfd_mach_o_scan_write_thread (abfd, cur) != 0) return FALSE; break; case BFD_MACH_O_LC_LOADFVMLIB: case BFD_MACH_O_LC_IDFVMLIB: case BFD_MACH_O_LC_IDENT: case BFD_MACH_O_LC_FVMFILE: case BFD_MACH_O_LC_PREPAGE: case BFD_MACH_O_LC_DYSYMTAB: case BFD_MACH_O_LC_LOAD_DYLIB: case BFD_MACH_O_LC_LOAD_WEAK_DYLIB: case BFD_MACH_O_LC_ID_DYLIB: case BFD_MACH_O_LC_LOAD_DYLINKER: case BFD_MACH_O_LC_ID_DYLINKER: case BFD_MACH_O_LC_PREBOUND_DYLIB: case BFD_MACH_O_LC_ROUTINES: case BFD_MACH_O_LC_SUB_FRAMEWORK: break; default: fprintf (stderr, "unable to write unknown load command 0x%lx\n", (long) cur->type); return FALSE; } } return TRUE; } static int bfd_mach_o_sizeof_headers (a, b) bfd *a ATTRIBUTE_UNUSED; bfd_boolean b ATTRIBUTE_UNUSED; { return 0; } /* Make an empty symbol. This is required only because bfd_make_section_anyway wants to create a symbol for the section. */ static asymbol * bfd_mach_o_make_empty_symbol (abfd) bfd *abfd; { asymbol *new; new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol)); if (new == NULL) return new; new->the_bfd = abfd; return new; } static int bfd_mach_o_write_header (abfd, header) bfd *abfd; bfd_mach_o_header *header; { unsigned char buf[28]; bfd_h_put_32 (abfd, header->magic, buf + 0); bfd_h_put_32 (abfd, header->cputype, buf + 4); bfd_h_put_32 (abfd, header->cpusubtype, buf + 8); bfd_h_put_32 (abfd, header->filetype, buf + 12); bfd_h_put_32 (abfd, header->ncmds, buf + 16); bfd_h_put_32 (abfd, header->sizeofcmds, buf + 20); bfd_h_put_32 (abfd, header->flags, buf + 24); bfd_seek (abfd, 0, SEEK_SET); if (bfd_bwrite ((PTR) buf, 28, abfd) != 28) return -1; return 0; } static int bfd_mach_o_read_header (abfd, header) bfd *abfd; bfd_mach_o_header *header; { unsigned char buf[28]; bfd_vma (*get32) PARAMS ((const bfd_byte *)) = NULL; bfd_seek (abfd, 0, SEEK_SET); if (bfd_bread ((PTR) buf, 28, abfd) != 28) return -1; if (bfd_getb32 (buf) == 0xfeedface) { header->byteorder = BFD_ENDIAN_BIG; header->magic = 0xfeedface; get32 = bfd_getb32; } else if (bfd_getl32 (buf) == 0xfeedface) { header->byteorder = BFD_ENDIAN_LITTLE; header->magic = 0xfeedface; get32 = bfd_getl32; } else { header->byteorder = BFD_ENDIAN_UNKNOWN; return -1; } header->cputype = (*get32) (buf + 4); header->cpusubtype = (*get32) (buf + 8); header->filetype = (*get32) (buf + 12); header->ncmds = (*get32) (buf + 16); header->sizeofcmds = (*get32) (buf + 20); header->flags = (*get32) (buf + 24); return 0; } static asection * bfd_mach_o_make_bfd_section (abfd, section) bfd *abfd; bfd_mach_o_section *section; { asection *bfdsec; char *sname; const char *prefix = "LC_SEGMENT"; unsigned int snamelen; snamelen = strlen (prefix) + 1 + strlen (section->segname) + 1 + strlen (section->sectname) + 1; sname = (char *) bfd_alloc (abfd, snamelen); if (sname == NULL) return NULL; sprintf (sname, "%s.%s.%s", prefix, section->segname, section->sectname); bfdsec = bfd_make_section_anyway (abfd, sname); if (bfdsec == NULL) return NULL; bfdsec->vma = section->addr; bfdsec->lma = section->addr; bfdsec->_raw_size = section->size; bfdsec->filepos = section->offset; bfdsec->alignment_power = section->align; if (section->flags & BFD_MACH_O_S_ZEROFILL) bfdsec->flags = SEC_ALLOC; else bfdsec->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC | SEC_CODE; return bfdsec; } static int bfd_mach_o_scan_read_section (abfd, section, offset) bfd *abfd; bfd_mach_o_section *section; bfd_vma offset; { unsigned char buf[68]; bfd_seek (abfd, offset, SEEK_SET); if (bfd_bread ((PTR) buf, 68, abfd) != 68) return -1; memcpy (section->sectname, buf, 16); section->sectname[16] = '\0'; memcpy (section->segname, buf + 16, 16); section->segname[16] = '\0'; section->addr = bfd_h_get_32 (abfd, buf + 32); section->size = bfd_h_get_32 (abfd, buf + 36); section->offset = bfd_h_get_32 (abfd, buf + 40); section->align = bfd_h_get_32 (abfd, buf + 44); section->reloff = bfd_h_get_32 (abfd, buf + 48); section->nreloc = bfd_h_get_32 (abfd, buf + 52); section->flags = bfd_h_get_32 (abfd, buf + 56); section->reserved1 = bfd_h_get_32 (abfd, buf + 60); section->reserved2 = bfd_h_get_32 (abfd, buf + 64); section->bfdsection = bfd_mach_o_make_bfd_section (abfd, section); if (section->bfdsection == NULL) return -1; return 0; } static int bfd_mach_o_scan_write_section (abfd, section, offset) bfd *abfd; bfd_mach_o_section *section; bfd_vma offset; { unsigned char buf[68]; memcpy (buf, section->sectname, 16); memcpy (buf + 16, section->segname, 16); bfd_h_put_32 (abfd, section->addr, buf + 32); bfd_h_put_32 (abfd, section->size, buf + 36); bfd_h_put_32 (abfd, section->offset, buf + 40); bfd_h_put_32 (abfd, section->align, buf + 44); bfd_h_put_32 (abfd, section->reloff, buf + 48); bfd_h_put_32 (abfd, section->nreloc, buf + 52); bfd_h_put_32 (abfd, section->flags, buf + 56); /* bfd_h_put_32 (abfd, section->reserved1, buf + 60); */ /* bfd_h_put_32 (abfd, section->reserved2, buf + 64); */ bfd_seek (abfd, offset, SEEK_SET); if (bfd_bwrite ((PTR) buf, 68, abfd) != 68) return -1; return 0; } static int bfd_mach_o_scan_write_symtab_symbols (abfd, command) bfd *abfd; bfd_mach_o_load_command *command; { bfd_mach_o_symtab_command *sym = &command->command.symtab; asymbol *s = NULL; unsigned long i; for (i = 0; i < sym->nsyms; i++) { unsigned char buf[12]; bfd_vma symoff = sym->symoff + (i * 12); unsigned char ntype = 0; unsigned char nsect = 0; short ndesc = 0; s = &sym->symbols[i]; /* Don't set this from the symbol information; use stored values. */ #if 0 if (s->flags & BSF_GLOBAL) ntype |= N_EXT; if (s->flags & BSF_DEBUGGING) ntype |= N_STAB; if (s->section == bfd_und_section_ptr) ntype |= N_UNDF; else if (s->section == bfd_abs_section_ptr) ntype |= N_ABS; else ntype |= N_SECT; #endif /* Instead just set from the stored values. */ ntype = (s->udata.i >> 24) & 0xff; nsect = (s->udata.i >> 16) & 0xff; ndesc = s->udata.i & 0xffff; bfd_h_put_32 (abfd, s->name - sym->strtab, buf); bfd_h_put_8 (abfd, ntype, buf + 4); bfd_h_put_8 (abfd, nsect, buf + 5); bfd_h_put_16 (abfd, ndesc, buf + 6); bfd_h_put_32 (abfd, s->section->vma + s->value, buf + 8); bfd_seek (abfd, symoff, SEEK_SET); if (bfd_bwrite ((PTR) buf, 12, abfd) != 12) { fprintf (stderr, "bfd_mach_o_scan_write_symtab_symbols: unable to write %d bytes at %lu\n", 12, (unsigned long) symoff); return -1; } } return 0; } int bfd_mach_o_scan_read_symtab_symbol (abfd, sym, s, i) bfd *abfd; bfd_mach_o_symtab_command *sym; asymbol *s; unsigned long i; { bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; bfd_vma symoff = sym->symoff + (i * 12); unsigned char buf[12]; unsigned char type = -1; unsigned char section = -1; short desc = -1; unsigned long value = -1; unsigned long stroff = -1; unsigned int symtype = -1; BFD_ASSERT (sym->strtab != NULL); bfd_seek (abfd, symoff, SEEK_SET); if (bfd_bread ((PTR) buf, 12, abfd) != 12) { fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: unable to read %d bytes at %lu\n", 12, (unsigned long) symoff); return -1; } stroff = bfd_h_get_32 (abfd, buf); type = bfd_h_get_8 (abfd, buf + 4); symtype = (type & 0x0e); section = bfd_h_get_8 (abfd, buf + 5) - 1; desc = bfd_h_get_16 (abfd, buf + 6); value = bfd_h_get_32 (abfd, buf + 8); if (stroff >= sym->strsize) { fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: symbol name out of range (%lu >= %lu)\n", (unsigned long) stroff, (unsigned long) sym->strsize); return -1; } s->the_bfd = abfd; s->name = sym->strtab + stroff; s->value = value; s->udata.i = (type << 24) | (section << 16) | desc; s->flags = 0x0; if (type & BFD_MACH_O_N_STAB) { s->flags |= BSF_DEBUGGING; s->section = bfd_und_section_ptr; } else { if (type & BFD_MACH_O_N_PEXT) { type &= ~BFD_MACH_O_N_PEXT; s->flags |= BSF_GLOBAL; } if (type & BFD_MACH_O_N_EXT) { type &= ~BFD_MACH_O_N_EXT; s->flags |= BSF_GLOBAL; } switch (symtype) { case BFD_MACH_O_N_UNDF: s->section = bfd_und_section_ptr; break; case BFD_MACH_O_N_PBUD: s->section = bfd_und_section_ptr; break; case BFD_MACH_O_N_ABS: s->section = bfd_abs_section_ptr; break; case BFD_MACH_O_N_SECT: if ((section > 0) && (section <= mdata->nsects)) { s->section = mdata->sections[section - 1]->bfdsection; s->value = s->value - mdata->sections[section - 1]->addr; } else { /* Mach-O uses 0 to mean "no section"; not an error. */ if (section != 0) { fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: " "symbol \"%s\" specified invalid section %d (max %lu): setting to undefined\n", s->name, section, mdata->nsects); } s->section = bfd_und_section_ptr; } break; case BFD_MACH_O_N_INDR: fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: " "symbol \"%s\" is unsupported 'indirect' reference: setting to undefined\n", s->name); s->section = bfd_und_section_ptr; break; default: fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: " "symbol \"%s\" specified invalid type field 0x%x: setting to undefined\n", s->name, symtype); s->section = bfd_und_section_ptr; break; } } return 0; } int bfd_mach_o_scan_read_symtab_strtab (abfd, sym) bfd *abfd; bfd_mach_o_symtab_command *sym; { BFD_ASSERT (sym->strtab == NULL); if (abfd->flags & BFD_IN_MEMORY) { struct bfd_in_memory *b; b = (struct bfd_in_memory *) abfd->iostream; if ((sym->stroff + sym->strsize) > b->size) { bfd_set_error (bfd_error_file_truncated); return -1; } sym->strtab = b->buffer + sym->stroff; return 0; } sym->strtab = bfd_alloc (abfd, sym->strsize); if (sym->strtab == NULL) return -1; bfd_seek (abfd, sym->stroff, SEEK_SET); if (bfd_bread ((PTR) sym->strtab, sym->strsize, abfd) != sym->strsize) { fprintf (stderr, "bfd_mach_o_scan_read_symtab_strtab: unable to read %lu bytes at %lu\n", sym->strsize, sym->stroff); return -1; } return 0; } int bfd_mach_o_scan_read_symtab_symbols (abfd, sym) bfd *abfd; bfd_mach_o_symtab_command *sym; { unsigned long i; int ret; BFD_ASSERT (sym->symbols == NULL); sym->symbols = bfd_alloc (abfd, sym->nsyms * sizeof (asymbol)); if (sym->symbols == NULL) { fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbols: unable to allocate memory for symbols\n"); return -1; } ret = bfd_mach_o_scan_read_symtab_strtab (abfd, sym); if (ret != 0) return ret; for (i = 0; i < sym->nsyms; i++) { ret = bfd_mach_o_scan_read_symtab_symbol (abfd, sym, &sym->symbols[i], i); if (ret != 0) return ret; } return 0; } int bfd_mach_o_scan_read_dysymtab_symbol (abfd, dysym, sym, s, i) bfd *abfd; bfd_mach_o_dysymtab_command *dysym; bfd_mach_o_symtab_command *sym; asymbol *s; unsigned long i; { unsigned long isymoff = dysym->indirectsymoff + (i * 4); unsigned long symindex; unsigned char buf[4]; BFD_ASSERT (i < dysym->nindirectsyms); bfd_seek (abfd, isymoff, SEEK_SET); if (bfd_bread ((PTR) buf, 4, abfd) != 4) { fprintf (stderr, "bfd_mach_o_scan_read_dysymtab_symbol: unable to read %lu bytes at %lu\n", (unsigned long) 4, isymoff); return -1; } symindex = bfd_h_get_32 (abfd, buf); return bfd_mach_o_scan_read_symtab_symbol (abfd, sym, s, symindex); } static const char * bfd_mach_o_i386_flavour_string (flavour) unsigned int flavour; { switch ((int) flavour) { case BFD_MACH_O_i386_NEW_THREAD_STATE: return "i386_NEW_THREAD_STATE"; case BFD_MACH_O_i386_FLOAT_STATE: return "i386_FLOAT_STATE"; case BFD_MACH_O_i386_ISA_PORT_MAP_STATE: return "i386_ISA_PORT_MAP_STATE"; case BFD_MACH_O_i386_V86_ASSIST_STATE: return "i386_V86_ASSIST_STATE"; case BFD_MACH_O_i386_REGS_SEGS_STATE: return "i386_REGS_SEGS_STATE"; case BFD_MACH_O_i386_THREAD_SYSCALL_STATE: return "i386_THREAD_SYSCALL_STATE"; case BFD_MACH_O_i386_THREAD_STATE_NONE: return "i386_THREAD_STATE_NONE"; case BFD_MACH_O_i386_SAVED_STATE: return "i386_SAVED_STATE"; case BFD_MACH_O_i386_THREAD_STATE: return "i386_THREAD_STATE"; case BFD_MACH_O_i386_THREAD_FPSTATE: return "i386_THREAD_FPSTATE"; case BFD_MACH_O_i386_THREAD_EXCEPTSTATE: return "i386_THREAD_EXCEPTSTATE"; case BFD_MACH_O_i386_THREAD_CTHREADSTATE: return "i386_THREAD_CTHREADSTATE"; default: return "UNKNOWN"; } } static const char * bfd_mach_o_ppc_flavour_string (flavour) unsigned int flavour; { switch ((int) flavour) { case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE"; case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE"; case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE"; case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE"; default: return "UNKNOWN"; } } static int bfd_mach_o_scan_write_thread (abfd, command) bfd *abfd; bfd_mach_o_load_command *command; { bfd_mach_o_thread_command *cmd = &command->command.thread; unsigned int i; unsigned char buf[8]; bfd_vma offset; unsigned int nflavours; BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD) || (command->type == BFD_MACH_O_LC_UNIXTHREAD)); offset = 8; nflavours = 0; for (i = 0; i < cmd->nflavours; i++) { BFD_ASSERT ((cmd->flavours[i].size % 4) == 0); BFD_ASSERT (cmd->flavours[i].offset == (command->offset + offset + 8)); bfd_h_put_32 (abfd, cmd->flavours[i].flavour, buf); bfd_h_put_32 (abfd, (cmd->flavours[i].size / 4), buf + 4); bfd_seek (abfd, command->offset + offset, SEEK_SET); if (bfd_bwrite ((PTR) buf, 8, abfd) != 8) return -1; offset += cmd->flavours[i].size + 8; } return 0; } static int bfd_mach_o_scan_read_dylinker (abfd, command) bfd *abfd; bfd_mach_o_load_command *command; { bfd_mach_o_dylinker_command *cmd = &command->command.dylinker; unsigned char buf[4]; unsigned int nameoff; asection *bfdsec; char *sname; const char *prefix; BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLINKER) || (command->type == BFD_MACH_O_LC_LOAD_DYLINKER)); bfd_seek (abfd, command->offset + 8, SEEK_SET); if (bfd_bread ((PTR) buf, 4, abfd) != 4) return -1; nameoff = bfd_h_get_32 (abfd, buf + 0); cmd->name_offset = command->offset + nameoff; cmd->name_len = command->len - nameoff; if (command->type == BFD_MACH_O_LC_LOAD_DYLINKER) prefix = "LC_LOAD_DYLINKER"; else if (command->type == BFD_MACH_O_LC_ID_DYLINKER) prefix = "LC_ID_DYLINKER"; else abort (); sname = (char *) bfd_alloc (abfd, strlen (prefix) + 1); if (sname == NULL) return -1; strcpy (sname, prefix); bfdsec = bfd_make_section_anyway (abfd, sname); if (bfdsec == NULL) return -1; bfdsec->vma = 0; bfdsec->lma = 0; bfdsec->_raw_size = command->len - 8; bfdsec->filepos = command->offset + 8; bfdsec->alignment_power = 0; bfdsec->flags = SEC_HAS_CONTENTS; cmd->section = bfdsec; return 0; } static int bfd_mach_o_scan_read_dylib (abfd, command) bfd *abfd; bfd_mach_o_load_command *command; { bfd_mach_o_dylib_command *cmd = &command->command.dylib; unsigned char buf[16]; unsigned int nameoff; asection *bfdsec; char *sname; const char *prefix; BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLIB) || (command->type == BFD_MACH_O_LC_LOAD_DYLIB) || (command->type == BFD_MACH_O_LC_LOAD_WEAK_DYLIB)); bfd_seek (abfd, command->offset + 8, SEEK_SET); if (bfd_bread ((PTR) buf, 16, abfd) != 16) return -1; nameoff = bfd_h_get_32 (abfd, buf + 0); cmd->timestamp = bfd_h_get_32 (abfd, buf + 4); cmd->current_version = bfd_h_get_32 (abfd, buf + 8); cmd->compatibility_version = bfd_h_get_32 (abfd, buf + 12); cmd->name_offset = command->offset + nameoff; cmd->name_len = command->len - nameoff; if (command->type == BFD_MACH_O_LC_LOAD_DYLIB) prefix = "LC_LOAD_DYLIB"; else if (command->type == BFD_MACH_O_LC_LOAD_WEAK_DYLIB) prefix = "LC_LOAD_WEAK_DYLIB"; else if (command->type == BFD_MACH_O_LC_ID_DYLIB) prefix = "LC_ID_DYLIB"; else abort (); sname = (char *) bfd_alloc (abfd, strlen (prefix) + 1); if (sname == NULL) return -1; strcpy (sname, prefix); bfdsec = bfd_make_section_anyway (abfd, sname); if (bfdsec == NULL) return -1; bfdsec->vma = 0; bfdsec->lma = 0; bfdsec->_raw_size = command->len - 8; bfdsec->filepos = command->offset + 8; bfdsec->alignment_power = 0; bfdsec->flags = SEC_HAS_CONTENTS; cmd->section = bfdsec; return 0; } static int bfd_mach_o_scan_read_prebound_dylib (abfd, command) bfd *abfd ATTRIBUTE_UNUSED; bfd_mach_o_load_command *command ATTRIBUTE_UNUSED; { /* bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib; */ BFD_ASSERT (command->type == BFD_MACH_O_LC_PREBOUND_DYLIB); return 0; } static int bfd_mach_o_scan_read_thread (abfd, command) bfd *abfd; bfd_mach_o_load_command *command; { bfd_mach_o_data_struct *mdata = NULL; bfd_mach_o_thread_command *cmd = &command->command.thread; unsigned char buf[8]; bfd_vma offset; unsigned int nflavours; unsigned int i; BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD) || (command->type == BFD_MACH_O_LC_UNIXTHREAD)); BFD_ASSERT (bfd_mach_o_valid (abfd)); mdata = abfd->tdata.mach_o_data; offset = 8; nflavours = 0; while (offset != command->len) { if (offset >= command->len) return -1; bfd_seek (abfd, command->offset + offset, SEEK_SET); if (bfd_bread ((PTR) buf, 8, abfd) != 8) return -1; offset += 8 + bfd_h_get_32 (abfd, buf + 4) * 4; nflavours++; } cmd->flavours = ((bfd_mach_o_thread_flavour *) bfd_alloc (abfd, nflavours * sizeof (bfd_mach_o_thread_flavour))); if (cmd->flavours == NULL) return -1; cmd->nflavours = nflavours; offset = 8; nflavours = 0; while (offset != command->len) { if (offset >= command->len) return -1; if (nflavours >= cmd->nflavours) return -1; bfd_seek (abfd, command->offset + offset, SEEK_SET); if (bfd_bread ((PTR) buf, 8, abfd) != 8) return -1; cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, buf); cmd->flavours[nflavours].offset = command->offset + offset + 8; cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, buf + 4) * 4; offset += cmd->flavours[nflavours].size + 8; nflavours++; } for (i = 0; i < nflavours; i++) { asection *bfdsec; unsigned int snamelen; char *sname; const char *flavourstr; const char *prefix = "LC_THREAD"; unsigned int j = 0; switch (mdata->header.cputype) { case BFD_MACH_O_CPU_TYPE_POWERPC: flavourstr = bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour); break; case BFD_MACH_O_CPU_TYPE_I386: flavourstr = bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour); break; default: flavourstr = "UNKNOWN_ARCHITECTURE"; break; } snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1; sname = (char *) bfd_alloc (abfd, snamelen); if (sname == NULL) return -1; for (;;) { sprintf (sname, "%s.%s.%u", prefix, flavourstr, j); if (bfd_get_section_by_name (abfd, sname) == NULL) break; j++; } bfdsec = bfd_make_section (abfd, sname); bfdsec->vma = 0; bfdsec->lma = 0; bfdsec->_raw_size = cmd->flavours[i].size; bfdsec->filepos = cmd->flavours[i].offset; bfdsec->alignment_power = 0x0; bfdsec->flags = SEC_HAS_CONTENTS; cmd->section = bfdsec; } return 0; } static int bfd_mach_o_scan_write_symtab (abfd, command) bfd *abfd; bfd_mach_o_load_command *command; { bfd_mach_o_symtab_command *seg = &command->command.symtab; unsigned char buf[16]; BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB); bfd_h_put_32 (abfd, seg->symoff, buf); bfd_h_put_32 (abfd, seg->nsyms, buf + 4); bfd_h_put_32 (abfd, seg->stroff, buf + 8); bfd_h_put_32 (abfd, seg->strsize, buf + 12); bfd_seek (abfd, command->offset + 8, SEEK_SET); if (bfd_bwrite ((PTR) buf, 16, abfd) != 16) return -1; if (bfd_mach_o_scan_write_symtab_symbols (abfd, command) != 0) return -1; return 0; } static int bfd_mach_o_scan_read_dysymtab (abfd, command) bfd *abfd; bfd_mach_o_load_command *command; { bfd_mach_o_dysymtab_command *seg = &command->command.dysymtab; unsigned char buf[72]; BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB); bfd_seek (abfd, command->offset + 8, SEEK_SET); if (bfd_bread ((PTR) buf, 72, abfd) != 72) return -1; seg->ilocalsym = bfd_h_get_32 (abfd, buf + 0); seg->nlocalsym = bfd_h_get_32 (abfd, buf + 4); seg->iextdefsym = bfd_h_get_32 (abfd, buf + 8); seg->nextdefsym = bfd_h_get_32 (abfd, buf + 12); seg->iundefsym = bfd_h_get_32 (abfd, buf + 16); seg->nundefsym = bfd_h_get_32 (abfd, buf + 20); seg->tocoff = bfd_h_get_32 (abfd, buf + 24); seg->ntoc = bfd_h_get_32 (abfd, buf + 28); seg->modtaboff = bfd_h_get_32 (abfd, buf + 32); seg->nmodtab = bfd_h_get_32 (abfd, buf + 36); seg->extrefsymoff = bfd_h_get_32 (abfd, buf + 40); seg->nextrefsyms = bfd_h_get_32 (abfd, buf + 44); seg->indirectsymoff = bfd_h_get_32 (abfd, buf + 48); seg->nindirectsyms = bfd_h_get_32 (abfd, buf + 52); seg->extreloff = bfd_h_get_32 (abfd, buf + 56); seg->nextrel = bfd_h_get_32 (abfd, buf + 60); seg->locreloff = bfd_h_get_32 (abfd, buf + 64); seg->nlocrel = bfd_h_get_32 (abfd, buf + 68); return 0; } static int bfd_mach_o_scan_read_symtab (abfd, command) bfd *abfd; bfd_mach_o_load_command *command; { bfd_mach_o_symtab_command *seg = &command->command.symtab; unsigned char buf[16]; asection *bfdsec; char *sname; const char *prefix = "LC_SYMTAB.stabs"; BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB); bfd_seek (abfd, command->offset + 8, SEEK_SET); if (bfd_bread ((PTR) buf, 16, abfd) != 16) return -1; seg->symoff = bfd_h_get_32 (abfd, buf); seg->nsyms = bfd_h_get_32 (abfd, buf + 4); seg->stroff = bfd_h_get_32 (abfd, buf + 8); seg->strsize = bfd_h_get_32 (abfd, buf + 12); seg->symbols = NULL; seg->strtab = NULL; sname = (char *) bfd_alloc (abfd, strlen (prefix) + 1); if (sname == NULL) return -1; strcpy (sname, prefix); bfdsec = bfd_make_section_anyway (abfd, sname); if (bfdsec == NULL) return -1; bfdsec->vma = 0; bfdsec->lma = 0; bfdsec->_raw_size = seg->nsyms * 12; bfdsec->filepos = seg->symoff; bfdsec->alignment_power = 0; bfdsec->flags = SEC_HAS_CONTENTS; seg->stabs_segment = bfdsec; prefix = "LC_SYMTAB.stabstr"; sname = (char *) bfd_alloc (abfd, strlen (prefix) + 1); if (sname == NULL) return -1; strcpy (sname, prefix); bfdsec = bfd_make_section_anyway (abfd, sname); if (bfdsec == NULL) return -1; bfdsec->vma = 0; bfdsec->lma = 0; bfdsec->_raw_size = seg->strsize; bfdsec->filepos = seg->stroff; bfdsec->alignment_power = 0; bfdsec->flags = SEC_HAS_CONTENTS; seg->stabstr_segment = bfdsec; return 0; } static int bfd_mach_o_scan_read_segment (abfd, command) bfd *abfd; bfd_mach_o_load_command *command; { unsigned char buf[48]; bfd_mach_o_segment_command *seg = &command->command.segment; unsigned long i; asection *bfdsec; char *sname; const char *prefix = "LC_SEGMENT"; unsigned int snamelen; BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT); bfd_seek (abfd, command->offset + 8, SEEK_SET); if (bfd_bread ((PTR) buf, 48, abfd) != 48) return -1; memcpy (seg->segname, buf, 16); seg->vmaddr = bfd_h_get_32 (abfd, buf + 16); seg->vmsize = bfd_h_get_32 (abfd, buf + 20); seg->fileoff = bfd_h_get_32 (abfd, buf + 24); seg->filesize = bfd_h_get_32 (abfd, buf + 28); /* seg->maxprot = bfd_h_get_32 (abfd, buf + 32); */ /* seg->initprot = bfd_h_get_32 (abfd, buf + 36); */ seg->nsects = bfd_h_get_32 (abfd, buf + 40); seg->flags = bfd_h_get_32 (abfd, buf + 44); snamelen = strlen (prefix) + 1 + strlen (seg->segname) + 1; sname = (char *) bfd_alloc (abfd, snamelen); if (sname == NULL) return -1; sprintf (sname, "%s.%s", prefix, seg->segname); bfdsec = bfd_make_section_anyway (abfd, sname); if (bfdsec == NULL) return -1; bfdsec->vma = seg->vmaddr; bfdsec->lma = seg->vmaddr; bfdsec->_raw_size = seg->filesize; bfdsec->filepos = seg->fileoff; bfdsec->alignment_power = 0x0; bfdsec->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC | SEC_CODE; seg->segment = bfdsec; if (seg->nsects != 0) { seg->sections = ((bfd_mach_o_section *) bfd_alloc (abfd, seg->nsects * sizeof (bfd_mach_o_section))); if (seg->sections == NULL) return -1; for (i = 0; i < seg->nsects; i++) { bfd_vma segoff = command->offset + 48 + 8 + (i * 68); if (bfd_mach_o_scan_read_section (abfd, &seg->sections[i], segoff) != 0) return -1; } } return 0; } static int bfd_mach_o_scan_write_segment (abfd, command) bfd *abfd; bfd_mach_o_load_command *command; { unsigned char buf[48]; bfd_mach_o_segment_command *seg = &command->command.segment; unsigned long i; BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT); memcpy (buf, seg->segname, 16); bfd_h_put_32 (abfd, seg->vmaddr, buf + 16); bfd_h_put_32 (abfd, seg->vmsize, buf + 20); bfd_h_put_32 (abfd, seg->fileoff, buf + 24); bfd_h_put_32 (abfd, seg->filesize, buf + 28); bfd_h_put_32 (abfd, 0 /* seg->maxprot */, buf + 32); bfd_h_put_32 (abfd, 0 /* seg->initprot */, buf + 36); bfd_h_put_32 (abfd, seg->nsects, buf + 40); bfd_h_put_32 (abfd, seg->flags, buf + 44); bfd_seek (abfd, command->offset + 8, SEEK_SET); if (bfd_bwrite ((PTR) buf, 48, abfd) != 48) return -1; { char buf[1024]; bfd_vma nbytes = seg->filesize; bfd_vma curoff = seg->fileoff; while (nbytes > 0) { bfd_vma thisread = nbytes; if (thisread > 1024) thisread = 1024; bfd_seek (abfd, curoff, SEEK_SET); if (bfd_bread ((PTR) buf, thisread, abfd) != thisread) return -1; bfd_seek (abfd, curoff, SEEK_SET); if (bfd_bwrite ((PTR) buf, thisread, abfd) != thisread) return -1; nbytes -= thisread; curoff += thisread; } } for (i = 0; i < seg->nsects; i++) { bfd_vma segoff = command->offset + 48 + 8 + (i * 68); if (bfd_mach_o_scan_write_section (abfd, &seg->sections[i], segoff) != 0) return -1; } return 0; } static int bfd_mach_o_scan_read_command (abfd, command) bfd *abfd; bfd_mach_o_load_command *command; { unsigned char buf[8]; bfd_seek (abfd, command->offset, SEEK_SET); if (bfd_bread ((PTR) buf, 8, abfd) != 8) return -1; command->type = (bfd_h_get_32 (abfd, buf) & ~BFD_MACH_O_LC_REQ_DYLD); command->type_required = (bfd_h_get_32 (abfd, buf) & BFD_MACH_O_LC_REQ_DYLD ? 1 : 0); command->len = bfd_h_get_32 (abfd, buf + 4); switch (command->type) { case BFD_MACH_O_LC_SEGMENT: if (bfd_mach_o_scan_read_segment (abfd, command) != 0) return -1; break; case BFD_MACH_O_LC_SYMTAB: if (bfd_mach_o_scan_read_symtab (abfd, command) != 0) return -1; break; case BFD_MACH_O_LC_SYMSEG: break; case BFD_MACH_O_LC_THREAD: case BFD_MACH_O_LC_UNIXTHREAD: if (bfd_mach_o_scan_read_thread (abfd, command) != 0) return -1; break; case BFD_MACH_O_LC_LOAD_DYLINKER: case BFD_MACH_O_LC_ID_DYLINKER: if (bfd_mach_o_scan_read_dylinker (abfd, command) != 0) return -1; break; case BFD_MACH_O_LC_LOAD_DYLIB: case BFD_MACH_O_LC_ID_DYLIB: case BFD_MACH_O_LC_LOAD_WEAK_DYLIB: if (bfd_mach_o_scan_read_dylib (abfd, command) != 0) return -1; break; case BFD_MACH_O_LC_PREBOUND_DYLIB: if (bfd_mach_o_scan_read_prebound_dylib (abfd, command) != 0) return -1; break; case BFD_MACH_O_LC_LOADFVMLIB: case BFD_MACH_O_LC_IDFVMLIB: case BFD_MACH_O_LC_IDENT: case BFD_MACH_O_LC_FVMFILE: case BFD_MACH_O_LC_PREPAGE: case BFD_MACH_O_LC_ROUTINES: case BFD_MACH_O_LC_SUB_FRAMEWORK: break; case BFD_MACH_O_LC_DYSYMTAB: if (bfd_mach_o_scan_read_dysymtab (abfd, command) != 0) return -1; break; case BFD_MACH_O_LC_SUB_UMBRELLA: case BFD_MACH_O_LC_SUB_CLIENT: case BFD_MACH_O_LC_SUB_LIBRARY: case BFD_MACH_O_LC_TWOLEVEL_HINTS: case BFD_MACH_O_LC_PREBIND_CKSUM: break; default: fprintf (stderr, "unable to read unknown load command 0x%lx\n", (unsigned long) command->type); break; } return 0; } static void bfd_mach_o_flatten_sections (abfd) bfd *abfd; { bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; long csect = 0; unsigned long i, j; mdata->nsects = 0; for (i = 0; i < mdata->header.ncmds; i++) { if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT) { bfd_mach_o_segment_command *seg; seg = &mdata->commands[i].command.segment; mdata->nsects += seg->nsects; } } mdata->sections = bfd_alloc (abfd, mdata->nsects * sizeof (bfd_mach_o_section *)); csect = 0; for (i = 0; i < mdata->header.ncmds; i++) { if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT) { bfd_mach_o_segment_command *seg; seg = &mdata->commands[i].command.segment; BFD_ASSERT (csect + seg->nsects <= mdata->nsects); for (j = 0; j < seg->nsects; j++) mdata->sections[csect++] = &seg->sections[j]; } } } int bfd_mach_o_scan_start_address (abfd) bfd *abfd; { bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; bfd_mach_o_thread_command *cmd = NULL; unsigned long i; for (i = 0; i < mdata->header.ncmds; i++) { if ((mdata->commands[i].type == BFD_MACH_O_LC_THREAD) || (mdata->commands[i].type == BFD_MACH_O_LC_UNIXTHREAD)) { if (cmd == NULL) cmd = &mdata->commands[i].command.thread; else return 0; } } if (cmd == NULL) return 0; for (i = 0; i < cmd->nflavours; i++) { if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386) && (cmd->flavours[i].flavour == (unsigned long) BFD_MACH_O_i386_THREAD_STATE)) { unsigned char buf[4]; bfd_seek (abfd, cmd->flavours[i].offset + 40, SEEK_SET); if (bfd_bread (buf, 4, abfd) != 4) return -1; abfd->start_address = bfd_h_get_32 (abfd, buf); } else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC) && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE)) { unsigned char buf[4]; bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET); if (bfd_bread (buf, 4, abfd) != 4) return -1; abfd->start_address = bfd_h_get_32 (abfd, buf); } } return 0; } int bfd_mach_o_scan (abfd, header, mdata) bfd *abfd; bfd_mach_o_header *header; bfd_mach_o_data_struct *mdata; { unsigned int i; enum bfd_architecture cputype; unsigned long cpusubtype; mdata->header = *header; mdata->symbols = NULL; abfd->flags = (abfd->xvec->object_flags | (abfd->flags & (BFD_IN_MEMORY | BFD_IO_FUNCS))); abfd->tdata.mach_o_data = mdata; bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype, &cputype, &cpusubtype); if (cputype == bfd_arch_unknown) { fprintf (stderr, "bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx\n", header->cputype, header->cpusubtype); return -1; } bfd_set_arch_mach (abfd, cputype, cpusubtype); if (header->ncmds != 0) { mdata->commands = ((bfd_mach_o_load_command *) bfd_alloc (abfd, header->ncmds * sizeof (bfd_mach_o_load_command))); if (mdata->commands == NULL) return -1; for (i = 0; i < header->ncmds; i++) { bfd_mach_o_load_command *cur = &mdata->commands[i]; if (i == 0) cur->offset = 28; else { bfd_mach_o_load_command *prev = &mdata->commands[i - 1]; cur->offset = prev->offset + prev->len; } if (bfd_mach_o_scan_read_command (abfd, cur) < 0) return -1; } } if (bfd_mach_o_scan_start_address (abfd) < 0) { #if 0 fprintf (stderr, "bfd_mach_o_scan: unable to scan start address: %s\n", bfd_errmsg (bfd_get_error ())); abfd->tdata.mach_o_data = NULL; return -1; #endif } bfd_mach_o_flatten_sections (abfd); return 0; } bfd_boolean bfd_mach_o_mkobject (abfd) bfd *abfd; { bfd_mach_o_data_struct *mdata = NULL; mdata = ((bfd_mach_o_data_struct *) bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct))); if (mdata == NULL) return FALSE; abfd->tdata.mach_o_data = mdata; mdata->header.magic = 0; mdata->header.cputype = 0; mdata->header.cpusubtype = 0; mdata->header.filetype = 0; mdata->header.ncmds = 0; mdata->header.sizeofcmds = 0; mdata->header.flags = 0; mdata->header.byteorder = BFD_ENDIAN_UNKNOWN; mdata->commands = NULL; mdata->nsymbols = 0; mdata->symbols = NULL; mdata->nsects = 0; mdata->sections = NULL; mdata->ibfd = NULL; return TRUE; } const bfd_target * bfd_mach_o_object_p (abfd) bfd *abfd; { struct bfd_preserve preserve; bfd_mach_o_header header; preserve.marker = NULL; if (bfd_mach_o_read_header (abfd, &header) != 0) goto wrong; if (! (header.byteorder == BFD_ENDIAN_BIG || header.byteorder == BFD_ENDIAN_LITTLE)) { fprintf (stderr, "unknown header byte-order value 0x%lx\n", (long) header.byteorder); goto wrong; } if (! ((header.byteorder == BFD_ENDIAN_BIG && abfd->xvec->byteorder == BFD_ENDIAN_BIG && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG) || (header.byteorder == BFD_ENDIAN_LITTLE && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE))) goto wrong; preserve.marker = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct)); if (preserve.marker == NULL || !bfd_preserve_save (abfd, &preserve)) goto fail; if (bfd_mach_o_scan (abfd, &header, (bfd_mach_o_data_struct *) preserve.marker) != 0) goto wrong; bfd_preserve_finish (abfd, &preserve); return abfd->xvec; wrong: bfd_set_error (bfd_error_wrong_format); fail: if (preserve.marker != NULL) bfd_preserve_restore (abfd, &preserve); return NULL; } const bfd_target * bfd_mach_o_core_p (abfd) bfd *abfd; { struct bfd_preserve preserve; bfd_mach_o_header header; preserve.marker = NULL; if (bfd_mach_o_read_header (abfd, &header) != 0) goto wrong; if (! (header.byteorder == BFD_ENDIAN_BIG || header.byteorder == BFD_ENDIAN_LITTLE)) { fprintf (stderr, "unknown header byte-order value 0x%lx\n", (long) header.byteorder); abort (); } if (! ((header.byteorder == BFD_ENDIAN_BIG && abfd->xvec->byteorder == BFD_ENDIAN_BIG && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG) || (header.byteorder == BFD_ENDIAN_LITTLE && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE))) goto wrong; if (header.filetype != BFD_MACH_O_MH_CORE) goto wrong; preserve.marker = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct)); if (preserve.marker == NULL || !bfd_preserve_save (abfd, &preserve)) goto fail; if (bfd_mach_o_scan (abfd, &header, (bfd_mach_o_data_struct *) preserve.marker) != 0) goto wrong; bfd_preserve_finish (abfd, &preserve); return abfd->xvec; wrong: bfd_set_error (bfd_error_wrong_format); fail: if (preserve.marker != NULL) bfd_preserve_restore (abfd, &preserve); return NULL; } typedef struct mach_o_fat_archentry { unsigned long cputype; unsigned long cpusubtype; unsigned long offset; unsigned long size; unsigned long align; bfd *abfd; } mach_o_fat_archentry; typedef struct mach_o_fat_data_struct { unsigned long magic; unsigned long nfat_arch; mach_o_fat_archentry *archentries; } mach_o_fat_data_struct; const bfd_target * bfd_mach_o_archive_p (abfd) bfd *abfd; { mach_o_fat_data_struct *adata = NULL; unsigned char buf[20]; unsigned long i; bfd_seek (abfd, 0, SEEK_SET); if (bfd_bread ((PTR) buf, 8, abfd) != 8) goto error; adata = (mach_o_fat_data_struct *) bfd_alloc (abfd, sizeof (mach_o_fat_data_struct)); if (adata == NULL) goto error; adata->magic = bfd_getb32 (buf); adata->nfat_arch = bfd_getb32 (buf + 4); if (adata->magic != 0xcafebabe) goto error; adata->archentries = (mach_o_fat_archentry *) bfd_alloc (abfd, adata->nfat_arch * sizeof (mach_o_fat_archentry)); if (adata->archentries == NULL) goto error; for (i = 0; i < adata->nfat_arch; i++) { bfd_seek (abfd, 8 + 20 * i, SEEK_SET); if (bfd_bread ((PTR) buf, 20, abfd) != 20) goto error; adata->archentries[i].cputype = bfd_getb32 (buf); adata->archentries[i].cpusubtype = bfd_getb32 (buf + 4); adata->archentries[i].offset = bfd_getb32 (buf + 8); adata->archentries[i].size = bfd_getb32 (buf + 12); adata->archentries[i].align = bfd_getb32 (buf + 16); adata->archentries[i].abfd = NULL; } abfd->tdata.mach_o_fat_data = adata; return abfd->xvec; error: if (adata != NULL) bfd_release (abfd, adata); bfd_set_error (bfd_error_wrong_format); return NULL; } bfd * bfd_mach_o_openr_next_archived_file (archive, prev) bfd *archive; bfd *prev; { mach_o_fat_data_struct *adata; mach_o_fat_archentry *entry = NULL; unsigned long i; adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data; BFD_ASSERT (adata != NULL); /* Find index of previous entry. */ if (prev == NULL) i = 0; /* Start at first one. */ else { for (i = 0; i < adata->nfat_arch; i++) { if (adata->archentries[i].abfd == prev) break; } if (i == adata->nfat_arch) { /* Not found. */ bfd_set_error (bfd_error_bad_value); return NULL; } i++; /* Get next entry. */ } if (i >= adata->nfat_arch) { bfd_set_error (bfd_error_no_more_archived_files); return NULL; } entry = &adata->archentries[i]; if (entry->abfd == NULL) { bfd *nbfd = _bfd_new_bfd_contained_in (archive); char *s = NULL; if (nbfd == NULL) return NULL; nbfd->origin = entry->offset; s = bfd_malloc (strlen (archive->filename) + 1); if (s == NULL) return NULL; strcpy (s, archive->filename); nbfd->filename = s; nbfd->iostream = NULL; entry->abfd = nbfd; } return entry->abfd; } int bfd_mach_o_lookup_section (abfd, section, mcommand, msection) bfd *abfd; asection *section; bfd_mach_o_load_command **mcommand; bfd_mach_o_section **msection; { struct mach_o_data_struct *md = abfd->tdata.mach_o_data; unsigned int i, j, num; bfd_mach_o_load_command *ncmd = NULL; bfd_mach_o_section *nsect = NULL; BFD_ASSERT (mcommand != NULL); BFD_ASSERT (msection != NULL); num = 0; for (i = 0; i < md->header.ncmds; i++) { struct bfd_mach_o_load_command *cmd = &md->commands[i]; struct bfd_mach_o_segment_command *seg = NULL; if (cmd->type != BFD_MACH_O_LC_SEGMENT) continue; seg = &cmd->command.segment; if (seg->segment == section) { if (num == 0) ncmd = cmd; num++; } for (j = 0; j < seg->nsects; j++) { struct bfd_mach_o_section *sect = &seg->sections[j]; if (sect->bfdsection == section) { if (num == 0) nsect = sect; num++; } } } *mcommand = ncmd; *msection = nsect; return num; } int bfd_mach_o_lookup_command (abfd, type, mcommand) bfd *abfd; bfd_mach_o_load_command_type type; bfd_mach_o_load_command **mcommand; { struct mach_o_data_struct *md = NULL; bfd_mach_o_load_command *ncmd = NULL; unsigned int i, num; md = abfd->tdata.mach_o_data; BFD_ASSERT (md != NULL); BFD_ASSERT (mcommand != NULL); num = 0; for (i = 0; i < md->header.ncmds; i++) { struct bfd_mach_o_load_command *cmd = &md->commands[i]; if (cmd->type != type) continue; if (num == 0) ncmd = cmd; num++; } *mcommand = ncmd; return num; } unsigned long bfd_mach_o_stack_addr (type) enum bfd_mach_o_cpu_type type; { switch (type) { case BFD_MACH_O_CPU_TYPE_MC680x0: return 0x04000000; case BFD_MACH_O_CPU_TYPE_MC88000: return 0xffffe000; case BFD_MACH_O_CPU_TYPE_POWERPC: return 0xc0000000; case BFD_MACH_O_CPU_TYPE_I386: return 0xc0000000; case BFD_MACH_O_CPU_TYPE_SPARC: return 0xf0000000; case BFD_MACH_O_CPU_TYPE_I860: return 0; case BFD_MACH_O_CPU_TYPE_HPPA: return 0xc0000000 - 0x04000000; default: return 0; } } int bfd_mach_o_core_fetch_environment (abfd, rbuf, rlen) bfd *abfd; unsigned char **rbuf; unsigned int *rlen; { bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype); unsigned int i = 0; for (i = 0; i < mdata->header.ncmds; i++) { bfd_mach_o_load_command *cur = &mdata->commands[i]; bfd_mach_o_segment_command *seg = NULL; if (cur->type != BFD_MACH_O_LC_SEGMENT) continue; seg = &cur->command.segment; if ((seg->vmaddr + seg->vmsize) == stackaddr) { unsigned long start = seg->fileoff; unsigned long end = seg->fileoff + seg->filesize; unsigned char *buf = bfd_malloc (1024); unsigned long size = 1024; for (;;) { bfd_size_type nread = 0; unsigned long offset; int found_nonnull = 0; if (size > (end - start)) size = (end - start); buf = bfd_realloc (buf, size); bfd_seek (abfd, end - size, SEEK_SET); nread = bfd_bread (buf, size, abfd); if (nread != size) return -1; for (offset = 4; offset <= size; offset += 4) { unsigned long val; val = *((unsigned long *) (buf + size - offset)); if (! found_nonnull) { if (val != 0) found_nonnull = 1; } else if (val == 0x0) { unsigned long bottom; unsigned long top; bottom = seg->fileoff + seg->filesize - offset; top = seg->fileoff + seg->filesize - 4; *rbuf = bfd_malloc (top - bottom); *rlen = top - bottom; memcpy (*rbuf, buf + size - *rlen, *rlen); return 0; } } if (size == (end - start)) break; size *= 2; } } } return -1; } char * bfd_mach_o_core_file_failing_command (abfd) bfd *abfd; { unsigned char *buf = NULL; unsigned int len = 0; int ret = -1; ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len); if (ret < 0) return NULL; return buf; } int bfd_mach_o_core_file_failing_signal (abfd) bfd *abfd ATTRIBUTE_UNUSED; { return 0; } bfd_boolean bfd_mach_o_core_file_matches_executable_p (core_bfd, exec_bfd) bfd *core_bfd ATTRIBUTE_UNUSED; bfd *exec_bfd ATTRIBUTE_UNUSED; { return TRUE; } #define TARGET_NAME mach_o_be_vec #define TARGET_STRING "mach-o-be" #define TARGET_BIG_ENDIAN 1 #define TARGET_ARCHIVE 0 #include "mach-o-target.c" #undef TARGET_NAME #undef TARGET_STRING #undef TARGET_BIG_ENDIAN #undef TARGET_ARCHIVE #define TARGET_NAME mach_o_le_vec #define TARGET_STRING "mach-o-le" #define TARGET_BIG_ENDIAN 0 #define TARGET_ARCHIVE 0 #include "mach-o-target.c" #undef TARGET_NAME #undef TARGET_STRING #undef TARGET_BIG_ENDIAN #undef TARGET_ARCHIVE #define TARGET_NAME mach_o_fat_vec #define TARGET_STRING "mach-o-fat" #define TARGET_BIG_ENDIAN 1 #define TARGET_ARCHIVE 1 #include "mach-o-target.c" #undef TARGET_NAME #undef TARGET_STRING #undef TARGET_BIG_ENDIAN #undef TARGET_ARCHIVE