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695344c018
* aout-adobe.c: Add missing c-format tags for translatable strings. * aout-cris.c: Likewise. * aoutx.h: Likewise. * bfd.c: Likewise. * binary.c: Likewise. * cache.c: Likewise. * coff-alpha.c: Likewise. * coff-arm.c: Likewise. * coff-i860.c: Likewise. * coff-mcore.c: Likewise. * coff-ppc.c: Likewise. * coff-rs6000.c: Likewise. * coff-sh.c: Likewise. * coff-tic4x.c: Likewise. * coff-tic54x.c: Likewise. * coff-tic80.c: Likewise. * coff64-rs6000.c: Likewise. * coffcode.h: Likewise. * coffgen.c: Likewise. * cofflink.c: Likewise. * coffswap.h: Likewise. * cpu-arm.c: Likewise. * dwarf2.c: Likewise. * ecoff.c: Likewise. * elf-attrs.c: Likewise. * elf-eh-frame.c: Likewise. * elf-ifunc.c: Likewise. * elf-m10300.c: Likewise. * elf-s390-common.c: Likewise. * elf.c: Likewise. * elf32-arc.c: Likewise. * elf32-arm.c: Likewise. * elf32-avr.c: Likewise. * elf32-bfin.c: Likewise. * elf32-cr16.c: Likewise. * elf32-cr16c.c: Likewise. * elf32-cris.c: Likewise. * elf32-crx.c: Likewise. * elf32-d10v.c: Likewise. * elf32-d30v.c: Likewise. * elf32-epiphany.c: Likewise. * elf32-fr30.c: Likewise. * elf32-frv.c: Likewise. * elf32-gen.c: Likewise. * elf32-hppa.c: Likewise. * elf32-i370.c: Likewise. * elf32-i386.c: Likewise. * elf32-i960.c: Likewise. * elf32-ip2k.c: Likewise. * elf32-iq2000.c: Likewise. * elf32-lm32.c: Likewise. * elf32-m32c.c: Likewise. * elf32-m32r.c: Likewise. * elf32-m68hc11.c: Likewise. * elf32-m68hc12.c: Likewise. * elf32-m68hc1x.c: Likewise. * elf32-m68k.c: Likewise. * elf32-mcore.c: Likewise. * elf32-mep.c: Likewise. * elf32-metag.c: Likewise. * elf32-microblaze.c: Likewise. * elf32-moxie.c: Likewise. * elf32-msp430.c: Likewise. * elf32-mt.c: Likewise. * elf32-nds32.c: Likewise. * elf32-nios2.c: Likewise. * elf32-or1k.c: Likewise. * elf32-pj.c: Likewise. * elf32-ppc.c: Likewise. * elf32-rl78.c: Likewise. * elf32-rx.c: Likewise. * elf32-s390.c: Likewise. * elf32-score.c: Likewise. * elf32-score7.c: Likewise. * elf32-sh-symbian.c: Likewise. * elf32-sh.c: Likewise. * elf32-sh64.c: Likewise. * elf32-spu.c: Likewise. * elf32-tic6x.c: Likewise. * elf32-tilepro.c: Likewise. * elf32-v850.c: Likewise. * elf32-vax.c: Likewise. * elf32-visium.c: Likewise. * elf32-xgate.c: Likewise. * elf32-xtensa.c: Likewise. * elf64-alpha.c: Likewise. * elf64-gen.c: Likewise. * elf64-hppa.c: Likewise. * elf64-ia64-vms.c: Likewise. * elf64-mmix.c: Likewise. * elf64-ppc.c: Likewise. * elf64-s390.c: Likewise. * elf64-sh64.c: Likewise. * elf64-sparc.c: Likewise. * elf64-x86-64.c: Likewise. * elfcode.h: Likewise. * elfcore.h: Likewise. * elflink.c: Likewise. * elfnn-aarch64.c: Likewise. * elfnn-ia64.c: Likewise. * elfxx-mips.c: Likewise. * elfxx-sparc.c: Likewise. * elfxx-tilegx.c: Likewise. * ieee.c: Likewise. * ihex.c: Likewise. * libbfd.c: Likewise. * linker.c: Likewise. * m68klinux.c: Likewise. * mach-o.c: Likewise. * merge.c: Likewise. * mmo.c: Likewise. * oasys.c: Likewise. * pdp11.c: Likewise. * pe-mips.c: Likewise. * peXXigen.c: Likewise. * pei-x86_64.c: Likewise. * peicode.h: Likewise. * ppcboot.c: Likewise. * reloc.c: Likewise. * sparclinux.c: Likewise. * srec.c: Likewise. * stabs.c: Likewise. * vms-alpha.c: Likewise. * vms-lib.c: Likewise. * xcofflink.c: Likewise.
5925 lines
168 KiB
C
5925 lines
168 KiB
C
/* Mach-O support for BFD.
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Copyright (C) 1999-2016 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 3 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., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "mach-o.h"
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#include "bfd.h"
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#include "libbfd.h"
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#include "libiberty.h"
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#include "aout/stab_gnu.h"
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#include "mach-o/reloc.h"
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#include "mach-o/external.h"
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#include <ctype.h>
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#include <stdlib.h>
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#include <string.h>
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#define bfd_mach_o_object_p bfd_mach_o_gen_object_p
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#define bfd_mach_o_core_p bfd_mach_o_gen_core_p
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#define bfd_mach_o_mkobject bfd_mach_o_gen_mkobject
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#define FILE_ALIGN(off, algn) \
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(((off) + ((file_ptr) 1 << (algn)) - 1) & ((file_ptr) -1U << (algn)))
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static bfd_boolean
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bfd_mach_o_read_dyld_content (bfd *abfd, bfd_mach_o_dyld_info_command *cmd);
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unsigned int
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bfd_mach_o_version (bfd *abfd)
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{
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bfd_mach_o_data_struct *mdata = NULL;
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BFD_ASSERT (bfd_mach_o_valid (abfd));
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mdata = bfd_mach_o_get_data (abfd);
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return mdata->header.version;
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}
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bfd_boolean
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bfd_mach_o_valid (bfd *abfd)
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{
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if (abfd == NULL || abfd->xvec == NULL)
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return FALSE;
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if (abfd->xvec->flavour != bfd_target_mach_o_flavour)
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return FALSE;
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if (bfd_mach_o_get_data (abfd) == NULL)
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return FALSE;
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return TRUE;
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}
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static INLINE bfd_boolean
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mach_o_wide_p (bfd_mach_o_header *header)
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{
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switch (header->version)
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{
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case 1:
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return FALSE;
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case 2:
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return TRUE;
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default:
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BFD_FAIL ();
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return FALSE;
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}
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}
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static INLINE bfd_boolean
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bfd_mach_o_wide_p (bfd *abfd)
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{
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return mach_o_wide_p (&bfd_mach_o_get_data (abfd)->header);
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}
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/* Tables to translate well known Mach-O segment/section names to bfd
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names. Use of canonical names (such as .text or .debug_frame) is required
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by gdb. */
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/* __TEXT Segment. */
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static const mach_o_section_name_xlat text_section_names_xlat[] =
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{
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{ ".text", "__text",
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SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS, 0},
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{ ".const", "__const",
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SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NONE, 0},
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{ ".static_const", "__static_const",
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SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NONE, 0},
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{ ".cstring", "__cstring",
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SEC_READONLY | SEC_DATA | SEC_LOAD | SEC_MERGE | SEC_STRINGS,
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BFD_MACH_O_S_CSTRING_LITERALS,
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BFD_MACH_O_S_ATTR_NONE, 0},
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{ ".literal4", "__literal4",
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SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_4BYTE_LITERALS,
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BFD_MACH_O_S_ATTR_NONE, 2},
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{ ".literal8", "__literal8",
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SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_8BYTE_LITERALS,
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BFD_MACH_O_S_ATTR_NONE, 3},
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{ ".literal16", "__literal16",
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SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_16BYTE_LITERALS,
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BFD_MACH_O_S_ATTR_NONE, 4},
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{ ".constructor", "__constructor",
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SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NONE, 0},
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{ ".destructor", "__destructor",
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SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NONE, 0},
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{ ".eh_frame", "__eh_frame",
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SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_COALESCED,
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BFD_MACH_O_S_ATTR_LIVE_SUPPORT
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| BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS
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| BFD_MACH_O_S_ATTR_NO_TOC, 2},
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{ NULL, NULL, 0, 0, 0, 0}
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};
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/* __DATA Segment. */
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static const mach_o_section_name_xlat data_section_names_xlat[] =
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{
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{ ".data", "__data",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NONE, 0},
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{ ".bss", "__bss",
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SEC_NO_FLAGS, BFD_MACH_O_S_ZEROFILL,
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BFD_MACH_O_S_ATTR_NONE, 0},
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{ ".const_data", "__const",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NONE, 0},
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{ ".static_data", "__static_data",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NONE, 0},
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{ ".mod_init_func", "__mod_init_func",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS,
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BFD_MACH_O_S_ATTR_NONE, 2},
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{ ".mod_term_func", "__mod_term_func",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS,
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BFD_MACH_O_S_ATTR_NONE, 2},
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{ ".dyld", "__dyld",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NONE, 0},
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{ ".cfstring", "__cfstring",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NONE, 2},
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{ NULL, NULL, 0, 0, 0, 0}
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};
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/* __DWARF Segment. */
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static const mach_o_section_name_xlat dwarf_section_names_xlat[] =
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{
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{ ".debug_frame", "__debug_frame",
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SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_DEBUG, 0},
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{ ".debug_info", "__debug_info",
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SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_DEBUG, 0},
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{ ".debug_abbrev", "__debug_abbrev",
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SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_DEBUG, 0},
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{ ".debug_aranges", "__debug_aranges",
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SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_DEBUG, 0},
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{ ".debug_macinfo", "__debug_macinfo",
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SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_DEBUG, 0},
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{ ".debug_line", "__debug_line",
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SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_DEBUG, 0},
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{ ".debug_loc", "__debug_loc",
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SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_DEBUG, 0},
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{ ".debug_pubnames", "__debug_pubnames",
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SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_DEBUG, 0},
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{ ".debug_pubtypes", "__debug_pubtypes",
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SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_DEBUG, 0},
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{ ".debug_str", "__debug_str",
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SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_DEBUG, 0},
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{ ".debug_ranges", "__debug_ranges",
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SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_DEBUG, 0},
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{ ".debug_macro", "__debug_macro",
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SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_DEBUG, 0},
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{ ".debug_gdb_scripts", "__debug_gdb_scri",
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SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_DEBUG, 0},
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{ NULL, NULL, 0, 0, 0, 0}
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};
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/* __OBJC Segment. */
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static const mach_o_section_name_xlat objc_section_names_xlat[] =
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{
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{ ".objc_class", "__class",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
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{ ".objc_meta_class", "__meta_class",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
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{ ".objc_cat_cls_meth", "__cat_cls_meth",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
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{ ".objc_cat_inst_meth", "__cat_inst_meth",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
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{ ".objc_protocol", "__protocol",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
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{ ".objc_string_object", "__string_object",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
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{ ".objc_cls_meth", "__cls_meth",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
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{ ".objc_inst_meth", "__inst_meth",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
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{ ".objc_cls_refs", "__cls_refs",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_LITERAL_POINTERS,
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BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
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{ ".objc_message_refs", "__message_refs",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_LITERAL_POINTERS,
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BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
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{ ".objc_symbols", "__symbols",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
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{ ".objc_category", "__category",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
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{ ".objc_class_vars", "__class_vars",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
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{ ".objc_instance_vars", "__instance_vars",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
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{ ".objc_module_info", "__module_info",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
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{ ".objc_selector_strs", "__selector_strs",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_CSTRING_LITERALS,
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BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
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{ ".objc_image_info", "__image_info",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
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{ ".objc_selector_fixup", "__sel_fixup",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
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/* Objc V1 */
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{ ".objc1_class_ext", "__class_ext",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
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{ ".objc1_property_list", "__property",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
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{ ".objc1_protocol_ext", "__protocol_ext",
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SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
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BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
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{ NULL, NULL, 0, 0, 0, 0}
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};
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static const mach_o_segment_name_xlat segsec_names_xlat[] =
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{
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{ "__TEXT", text_section_names_xlat },
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{ "__DATA", data_section_names_xlat },
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{ "__DWARF", dwarf_section_names_xlat },
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{ "__OBJC", objc_section_names_xlat },
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{ NULL, NULL }
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};
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static const char dsym_subdir[] = ".dSYM/Contents/Resources/DWARF";
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/* For both cases bfd-name => mach-o name and vice versa, the specific target
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is checked before the generic. This allows a target (e.g. ppc for cstring)
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to override the generic definition with a more specific one. */
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/* Fetch the translation from a Mach-O section designation (segment, section)
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as a bfd short name, if one exists. Otherwise return NULL.
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Allow the segment and section names to be unterminated 16 byte arrays. */
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const mach_o_section_name_xlat *
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bfd_mach_o_section_data_for_mach_sect (bfd *abfd, const char *segname,
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const char *sectname)
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{
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const struct mach_o_segment_name_xlat *seg;
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const mach_o_section_name_xlat *sec;
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bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
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/* First try any target-specific translations defined... */
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if (bed->segsec_names_xlat)
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for (seg = bed->segsec_names_xlat; seg->segname; seg++)
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if (strncmp (seg->segname, segname, BFD_MACH_O_SEGNAME_SIZE) == 0)
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for (sec = seg->sections; sec->mach_o_name; sec++)
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if (strncmp (sec->mach_o_name, sectname,
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BFD_MACH_O_SECTNAME_SIZE) == 0)
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return sec;
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|
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/* ... and then the Mach-O generic ones. */
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for (seg = segsec_names_xlat; seg->segname; seg++)
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if (strncmp (seg->segname, segname, BFD_MACH_O_SEGNAME_SIZE) == 0)
|
|
for (sec = seg->sections; sec->mach_o_name; sec++)
|
|
if (strncmp (sec->mach_o_name, sectname,
|
|
BFD_MACH_O_SECTNAME_SIZE) == 0)
|
|
return sec;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* If the bfd_name for this section is a 'canonical' form for which we
|
|
know the Mach-O data, return the segment name and the data for the
|
|
Mach-O equivalent. Otherwise return NULL. */
|
|
|
|
const mach_o_section_name_xlat *
|
|
bfd_mach_o_section_data_for_bfd_name (bfd *abfd, const char *bfd_name,
|
|
const char **segname)
|
|
{
|
|
const struct mach_o_segment_name_xlat *seg;
|
|
const mach_o_section_name_xlat *sec;
|
|
bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
|
|
*segname = NULL;
|
|
|
|
if (bfd_name[0] != '.')
|
|
return NULL;
|
|
|
|
/* First try any target-specific translations defined... */
|
|
if (bed->segsec_names_xlat)
|
|
for (seg = bed->segsec_names_xlat; seg->segname; seg++)
|
|
for (sec = seg->sections; sec->bfd_name; sec++)
|
|
if (strcmp (bfd_name, sec->bfd_name) == 0)
|
|
{
|
|
*segname = seg->segname;
|
|
return sec;
|
|
}
|
|
|
|
/* ... and then the Mach-O generic ones. */
|
|
for (seg = segsec_names_xlat; seg->segname; seg++)
|
|
for (sec = seg->sections; sec->bfd_name; sec++)
|
|
if (strcmp (bfd_name, sec->bfd_name) == 0)
|
|
{
|
|
*segname = seg->segname;
|
|
return sec;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Convert Mach-O section name to BFD.
|
|
|
|
Try to use standard/canonical names, for which we have tables including
|
|
default flag settings - which are returned. Otherwise forge a new name
|
|
in the form "<segmentname>.<sectionname>" this will be prefixed with
|
|
LC_SEGMENT. if the segment name does not begin with an underscore.
|
|
|
|
SEGNAME and SECTNAME are 16 byte arrays (they do not need to be NUL-
|
|
terminated if the name length is exactly 16 bytes - but must be if the name
|
|
length is less than 16 characters). */
|
|
|
|
void
|
|
bfd_mach_o_convert_section_name_to_bfd (bfd *abfd, const char *segname,
|
|
const char *secname, const char **name,
|
|
flagword *flags)
|
|
{
|
|
const mach_o_section_name_xlat *xlat;
|
|
char *res;
|
|
unsigned int len;
|
|
const char *pfx = "";
|
|
|
|
*name = NULL;
|
|
*flags = SEC_NO_FLAGS;
|
|
|
|
/* First search for a canonical name...
|
|
xlat will be non-null if there is an entry for segname, secname. */
|
|
xlat = bfd_mach_o_section_data_for_mach_sect (abfd, segname, secname);
|
|
if (xlat)
|
|
{
|
|
len = strlen (xlat->bfd_name);
|
|
res = bfd_alloc (abfd, len + 1);
|
|
if (res == NULL)
|
|
return;
|
|
memcpy (res, xlat->bfd_name, len+1);
|
|
*name = res;
|
|
*flags = xlat->bfd_flags;
|
|
return;
|
|
}
|
|
|
|
/* ... else we make up a bfd name from the segment concatenated with the
|
|
section. */
|
|
|
|
len = 16 + 1 + 16 + 1;
|
|
|
|
/* Put "LC_SEGMENT." prefix if the segment name is weird (ie doesn't start
|
|
with an underscore. */
|
|
if (segname[0] != '_')
|
|
{
|
|
static const char seg_pfx[] = "LC_SEGMENT.";
|
|
|
|
pfx = seg_pfx;
|
|
len += sizeof (seg_pfx) - 1;
|
|
}
|
|
|
|
res = bfd_alloc (abfd, len);
|
|
if (res == NULL)
|
|
return;
|
|
snprintf (res, len, "%s%.16s.%.16s", pfx, segname, secname);
|
|
*name = res;
|
|
}
|
|
|
|
/* Convert a bfd section name to a Mach-O segment + section name.
|
|
|
|
If the name is a canonical one for which we have a Darwin match
|
|
return the translation table - which contains defaults for flags,
|
|
type, attribute and default alignment data.
|
|
|
|
Otherwise, expand the bfd_name (assumed to be in the form
|
|
"[LC_SEGMENT.]<segmentname>.<sectionname>") and return NULL. */
|
|
|
|
static const mach_o_section_name_xlat *
|
|
bfd_mach_o_convert_section_name_to_mach_o (bfd *abfd ATTRIBUTE_UNUSED,
|
|
asection *sect,
|
|
bfd_mach_o_section *section)
|
|
{
|
|
const mach_o_section_name_xlat *xlat;
|
|
const char *name = bfd_get_section_name (abfd, sect);
|
|
const char *segname;
|
|
const char *dot;
|
|
unsigned int len;
|
|
unsigned int seglen;
|
|
unsigned int seclen;
|
|
|
|
memset (section->segname, 0, BFD_MACH_O_SEGNAME_SIZE + 1);
|
|
memset (section->sectname, 0, BFD_MACH_O_SECTNAME_SIZE + 1);
|
|
|
|
/* See if is a canonical name ... */
|
|
xlat = bfd_mach_o_section_data_for_bfd_name (abfd, name, &segname);
|
|
if (xlat)
|
|
{
|
|
strcpy (section->segname, segname);
|
|
strcpy (section->sectname, xlat->mach_o_name);
|
|
return xlat;
|
|
}
|
|
|
|
/* .. else we convert our constructed one back to Mach-O.
|
|
Strip LC_SEGMENT. prefix, if present. */
|
|
if (strncmp (name, "LC_SEGMENT.", 11) == 0)
|
|
name += 11;
|
|
|
|
/* Find a dot. */
|
|
dot = strchr (name, '.');
|
|
len = strlen (name);
|
|
|
|
/* Try to split name into segment and section names. */
|
|
if (dot && dot != name)
|
|
{
|
|
seglen = dot - name;
|
|
seclen = len - (dot + 1 - name);
|
|
|
|
if (seglen <= BFD_MACH_O_SEGNAME_SIZE
|
|
&& seclen <= BFD_MACH_O_SECTNAME_SIZE)
|
|
{
|
|
memcpy (section->segname, name, seglen);
|
|
section->segname[seglen] = 0;
|
|
memcpy (section->sectname, dot + 1, seclen);
|
|
section->sectname[seclen] = 0;
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/* The segment and section names are both missing - don't make them
|
|
into dots. */
|
|
if (dot && dot == name)
|
|
return NULL;
|
|
|
|
/* Just duplicate the name into both segment and section. */
|
|
if (len > 16)
|
|
len = 16;
|
|
memcpy (section->segname, name, len);
|
|
section->segname[len] = 0;
|
|
memcpy (section->sectname, name, len);
|
|
section->sectname[len] = 0;
|
|
return NULL;
|
|
}
|
|
|
|
/* Return the size of an entry for section SEC.
|
|
Must be called only for symbol pointer section and symbol stubs
|
|
sections. */
|
|
|
|
unsigned int
|
|
bfd_mach_o_section_get_entry_size (bfd *abfd, bfd_mach_o_section *sec)
|
|
{
|
|
switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
|
|
{
|
|
case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
|
|
case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
|
|
return bfd_mach_o_wide_p (abfd) ? 8 : 4;
|
|
case BFD_MACH_O_S_SYMBOL_STUBS:
|
|
return sec->reserved2;
|
|
default:
|
|
BFD_FAIL ();
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* Return the number of indirect symbols for a section.
|
|
Must be called only for symbol pointer section and symbol stubs
|
|
sections. */
|
|
|
|
unsigned int
|
|
bfd_mach_o_section_get_nbr_indirect (bfd *abfd, bfd_mach_o_section *sec)
|
|
{
|
|
unsigned int elsz;
|
|
|
|
elsz = bfd_mach_o_section_get_entry_size (abfd, sec);
|
|
if (elsz == 0)
|
|
return 0;
|
|
else
|
|
return sec->size / elsz;
|
|
}
|
|
|
|
/* Append command CMD to ABFD. Note that header.ncmds is not updated. */
|
|
|
|
static void
|
|
bfd_mach_o_append_command (bfd *abfd, bfd_mach_o_load_command *cmd)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
|
|
if (mdata->last_command != NULL)
|
|
mdata->last_command->next = cmd;
|
|
else
|
|
mdata->first_command = cmd;
|
|
mdata->last_command = cmd;
|
|
cmd->next = NULL;
|
|
}
|
|
|
|
/* Copy any private info we understand from the input symbol
|
|
to the output symbol. */
|
|
|
|
bfd_boolean
|
|
bfd_mach_o_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED,
|
|
asymbol *isymbol,
|
|
bfd *obfd ATTRIBUTE_UNUSED,
|
|
asymbol *osymbol)
|
|
{
|
|
bfd_mach_o_asymbol *os, *is;
|
|
|
|
os = (bfd_mach_o_asymbol *)osymbol;
|
|
is = (bfd_mach_o_asymbol *)isymbol;
|
|
os->n_type = is->n_type;
|
|
os->n_sect = is->n_sect;
|
|
os->n_desc = is->n_desc;
|
|
os->symbol.udata.i = is->symbol.udata.i;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Copy any private info we understand from the input section
|
|
to the output section. */
|
|
|
|
bfd_boolean
|
|
bfd_mach_o_bfd_copy_private_section_data (bfd *ibfd, asection *isection,
|
|
bfd *obfd, asection *osection)
|
|
{
|
|
bfd_mach_o_section *os = bfd_mach_o_get_mach_o_section (osection);
|
|
bfd_mach_o_section *is = bfd_mach_o_get_mach_o_section (isection);
|
|
|
|
if (ibfd->xvec->flavour != bfd_target_mach_o_flavour
|
|
|| obfd->xvec->flavour != bfd_target_mach_o_flavour)
|
|
return TRUE;
|
|
|
|
BFD_ASSERT (is != NULL && os != NULL);
|
|
|
|
os->flags = is->flags;
|
|
os->reserved1 = is->reserved1;
|
|
os->reserved2 = is->reserved2;
|
|
os->reserved3 = is->reserved3;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Copy any private info we understand from the input bfd
|
|
to the output bfd. */
|
|
|
|
bfd_boolean
|
|
bfd_mach_o_bfd_copy_private_header_data (bfd *ibfd, bfd *obfd)
|
|
{
|
|
bfd_mach_o_data_struct *imdata;
|
|
bfd_mach_o_data_struct *omdata;
|
|
bfd_mach_o_load_command *icmd;
|
|
|
|
if (bfd_get_flavour (ibfd) != bfd_target_mach_o_flavour
|
|
|| bfd_get_flavour (obfd) != bfd_target_mach_o_flavour)
|
|
return TRUE;
|
|
|
|
BFD_ASSERT (bfd_mach_o_valid (ibfd));
|
|
BFD_ASSERT (bfd_mach_o_valid (obfd));
|
|
|
|
imdata = bfd_mach_o_get_data (ibfd);
|
|
omdata = bfd_mach_o_get_data (obfd);
|
|
|
|
/* Copy header flags. */
|
|
omdata->header.flags = imdata->header.flags;
|
|
|
|
/* Copy commands. */
|
|
for (icmd = imdata->first_command; icmd != NULL; icmd = icmd->next)
|
|
{
|
|
bfd_mach_o_load_command *ocmd;
|
|
|
|
switch (icmd->type)
|
|
{
|
|
case BFD_MACH_O_LC_LOAD_DYLIB:
|
|
case BFD_MACH_O_LC_LOAD_DYLINKER:
|
|
case BFD_MACH_O_LC_DYLD_INFO:
|
|
/* Command is copied. */
|
|
ocmd = bfd_alloc (obfd, sizeof (bfd_mach_o_load_command));
|
|
if (ocmd == NULL)
|
|
return FALSE;
|
|
|
|
/* Copy common fields. */
|
|
ocmd->type = icmd->type;
|
|
ocmd->type_required = icmd->type_required;
|
|
ocmd->offset = 0;
|
|
ocmd->len = icmd->len;
|
|
break;
|
|
|
|
default:
|
|
/* Command is not copied. */
|
|
continue;
|
|
break;
|
|
}
|
|
|
|
switch (icmd->type)
|
|
{
|
|
case BFD_MACH_O_LC_LOAD_DYLIB:
|
|
{
|
|
bfd_mach_o_dylib_command *idy = &icmd->command.dylib;
|
|
bfd_mach_o_dylib_command *ody = &ocmd->command.dylib;
|
|
|
|
ody->name_offset = idy->name_offset;
|
|
ody->timestamp = idy->timestamp;
|
|
ody->current_version = idy->current_version;
|
|
ody->compatibility_version = idy->compatibility_version;
|
|
ody->name_str = idy->name_str;
|
|
}
|
|
break;
|
|
|
|
case BFD_MACH_O_LC_LOAD_DYLINKER:
|
|
{
|
|
bfd_mach_o_dylinker_command *idy = &icmd->command.dylinker;
|
|
bfd_mach_o_dylinker_command *ody = &ocmd->command.dylinker;
|
|
|
|
ody->name_offset = idy->name_offset;
|
|
ody->name_str = idy->name_str;
|
|
}
|
|
break;
|
|
|
|
case BFD_MACH_O_LC_DYLD_INFO:
|
|
{
|
|
bfd_mach_o_dyld_info_command *idy = &icmd->command.dyld_info;
|
|
bfd_mach_o_dyld_info_command *ody = &ocmd->command.dyld_info;
|
|
|
|
if (bfd_mach_o_read_dyld_content (ibfd, idy))
|
|
{
|
|
ody->rebase_size = idy->rebase_size;
|
|
ody->rebase_content = idy->rebase_content;
|
|
|
|
ody->bind_size = idy->bind_size;
|
|
ody->bind_content = idy->bind_content;
|
|
|
|
ody->weak_bind_size = idy->weak_bind_size;
|
|
ody->weak_bind_content = idy->weak_bind_content;
|
|
|
|
ody->lazy_bind_size = idy->lazy_bind_size;
|
|
ody->lazy_bind_content = idy->lazy_bind_content;
|
|
|
|
ody->export_size = idy->export_size;
|
|
ody->export_content = idy->export_content;
|
|
}
|
|
/* PR 17512L: file: 730e492d. */
|
|
else
|
|
{
|
|
ody->rebase_size =
|
|
ody->bind_size =
|
|
ody->weak_bind_size =
|
|
ody->lazy_bind_size =
|
|
ody->export_size = 0;
|
|
ody->rebase_content =
|
|
ody->bind_content =
|
|
ody->weak_bind_content =
|
|
ody->lazy_bind_content =
|
|
ody->export_content = NULL;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
/* That command should be handled. */
|
|
abort ();
|
|
}
|
|
|
|
/* Insert command. */
|
|
bfd_mach_o_append_command (obfd, ocmd);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* This allows us to set up to 32 bits of flags (unless we invent some
|
|
fiendish scheme to subdivide). For now, we'll just set the file flags
|
|
without error checking - just overwrite. */
|
|
|
|
bfd_boolean
|
|
bfd_mach_o_bfd_set_private_flags (bfd *abfd, flagword flags)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
|
|
if (!mdata)
|
|
return FALSE;
|
|
|
|
mdata->header.flags = flags;
|
|
return TRUE;
|
|
}
|
|
|
|
/* Count the total number of symbols. */
|
|
|
|
static long
|
|
bfd_mach_o_count_symbols (bfd *abfd)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
|
|
if (mdata->symtab == NULL)
|
|
return 0;
|
|
return mdata->symtab->nsyms;
|
|
}
|
|
|
|
long
|
|
bfd_mach_o_get_symtab_upper_bound (bfd *abfd)
|
|
{
|
|
long nsyms = bfd_mach_o_count_symbols (abfd);
|
|
|
|
return ((nsyms + 1) * sizeof (asymbol *));
|
|
}
|
|
|
|
long
|
|
bfd_mach_o_canonicalize_symtab (bfd *abfd, asymbol **alocation)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
long nsyms = bfd_mach_o_count_symbols (abfd);
|
|
bfd_mach_o_symtab_command *sym = mdata->symtab;
|
|
unsigned long j;
|
|
|
|
if (nsyms < 0)
|
|
return nsyms;
|
|
|
|
if (nsyms == 0)
|
|
{
|
|
/* Do not try to read symbols if there are none. */
|
|
alocation[0] = NULL;
|
|
return 0;
|
|
}
|
|
|
|
if (!bfd_mach_o_read_symtab_symbols (abfd))
|
|
{
|
|
_bfd_error_handler
|
|
(_("bfd_mach_o_canonicalize_symtab: unable to load symbols"));
|
|
return 0;
|
|
}
|
|
|
|
BFD_ASSERT (sym->symbols != NULL);
|
|
|
|
for (j = 0; j < sym->nsyms; j++)
|
|
alocation[j] = &sym->symbols[j].symbol;
|
|
|
|
alocation[j] = NULL;
|
|
|
|
return nsyms;
|
|
}
|
|
|
|
/* Create synthetic symbols for indirect symbols. */
|
|
|
|
long
|
|
bfd_mach_o_get_synthetic_symtab (bfd *abfd,
|
|
long symcount ATTRIBUTE_UNUSED,
|
|
asymbol **syms ATTRIBUTE_UNUSED,
|
|
long dynsymcount ATTRIBUTE_UNUSED,
|
|
asymbol **dynsyms ATTRIBUTE_UNUSED,
|
|
asymbol **ret)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
|
|
bfd_mach_o_symtab_command *symtab = mdata->symtab;
|
|
asymbol *s;
|
|
char * s_start;
|
|
char * s_end;
|
|
unsigned long count, i, j, n;
|
|
size_t size;
|
|
char *names;
|
|
char *nul_name;
|
|
const char stub [] = "$stub";
|
|
|
|
*ret = NULL;
|
|
|
|
/* Stop now if no symbols or no indirect symbols. */
|
|
if (dysymtab == NULL || dysymtab->nindirectsyms == 0
|
|
|| symtab == NULL || symtab->symbols == NULL)
|
|
return 0;
|
|
|
|
/* We need to allocate a bfd symbol for every indirect symbol and to
|
|
allocate the memory for its name. */
|
|
count = dysymtab->nindirectsyms;
|
|
size = count * sizeof (asymbol) + 1;
|
|
|
|
for (j = 0; j < count; j++)
|
|
{
|
|
const char * strng;
|
|
unsigned int isym = dysymtab->indirect_syms[j];
|
|
|
|
/* Some indirect symbols are anonymous. */
|
|
if (isym < symtab->nsyms && (strng = symtab->symbols[isym].symbol.name))
|
|
/* PR 17512: file: f5b8eeba. */
|
|
size += strnlen (strng, symtab->strsize - (strng - symtab->strtab)) + sizeof (stub);
|
|
}
|
|
|
|
s_start = bfd_malloc (size);
|
|
s = *ret = (asymbol *) s_start;
|
|
if (s == NULL)
|
|
return -1;
|
|
names = (char *) (s + count);
|
|
nul_name = names;
|
|
*names++ = 0;
|
|
s_end = s_start + size;
|
|
|
|
n = 0;
|
|
for (i = 0; i < mdata->nsects; i++)
|
|
{
|
|
bfd_mach_o_section *sec = mdata->sections[i];
|
|
unsigned int first, last;
|
|
bfd_vma addr;
|
|
bfd_vma entry_size;
|
|
|
|
switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
|
|
{
|
|
case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
|
|
case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
|
|
case BFD_MACH_O_S_SYMBOL_STUBS:
|
|
/* Only these sections have indirect symbols. */
|
|
first = sec->reserved1;
|
|
last = first + bfd_mach_o_section_get_nbr_indirect (abfd, sec);
|
|
addr = sec->addr;
|
|
entry_size = bfd_mach_o_section_get_entry_size (abfd, sec);
|
|
|
|
/* PR 17512: file: 08e15eec. */
|
|
if (first >= count || last >= count || first > last)
|
|
goto fail;
|
|
|
|
for (j = first; j < last; j++)
|
|
{
|
|
unsigned int isym = dysymtab->indirect_syms[j];
|
|
|
|
/* PR 17512: file: 04d64d9b. */
|
|
if (((char *) s) + sizeof (* s) > s_end)
|
|
goto fail;
|
|
|
|
s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
|
|
s->section = sec->bfdsection;
|
|
s->value = addr - sec->addr;
|
|
s->udata.p = NULL;
|
|
|
|
if (isym < symtab->nsyms
|
|
&& symtab->symbols[isym].symbol.name)
|
|
{
|
|
const char *sym = symtab->symbols[isym].symbol.name;
|
|
size_t len;
|
|
|
|
s->name = names;
|
|
len = strlen (sym);
|
|
/* PR 17512: file: 47dfd4d2. */
|
|
if (names + len >= s_end)
|
|
goto fail;
|
|
memcpy (names, sym, len);
|
|
names += len;
|
|
/* PR 17512: file: 18f340a4. */
|
|
if (names + sizeof (stub) >= s_end)
|
|
goto fail;
|
|
memcpy (names, stub, sizeof (stub));
|
|
names += sizeof (stub);
|
|
}
|
|
else
|
|
s->name = nul_name;
|
|
|
|
addr += entry_size;
|
|
s++;
|
|
n++;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
return n;
|
|
|
|
fail:
|
|
free (s_start);
|
|
* ret = NULL;
|
|
return -1;
|
|
}
|
|
|
|
void
|
|
bfd_mach_o_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
|
|
asymbol *symbol,
|
|
symbol_info *ret)
|
|
{
|
|
bfd_symbol_info (symbol, ret);
|
|
}
|
|
|
|
void
|
|
bfd_mach_o_print_symbol (bfd *abfd,
|
|
void * afile,
|
|
asymbol *symbol,
|
|
bfd_print_symbol_type how)
|
|
{
|
|
FILE *file = (FILE *) afile;
|
|
const char *name;
|
|
bfd_mach_o_asymbol *asym = (bfd_mach_o_asymbol *)symbol;
|
|
|
|
switch (how)
|
|
{
|
|
case bfd_print_symbol_name:
|
|
fprintf (file, "%s", symbol->name);
|
|
break;
|
|
default:
|
|
bfd_print_symbol_vandf (abfd, (void *) file, symbol);
|
|
if (asym->n_type & BFD_MACH_O_N_STAB)
|
|
name = bfd_get_stab_name (asym->n_type);
|
|
else
|
|
switch (asym->n_type & BFD_MACH_O_N_TYPE)
|
|
{
|
|
case BFD_MACH_O_N_UNDF:
|
|
if (symbol->value == 0)
|
|
name = "UND";
|
|
else
|
|
name = "COM";
|
|
break;
|
|
case BFD_MACH_O_N_ABS:
|
|
name = "ABS";
|
|
break;
|
|
case BFD_MACH_O_N_INDR:
|
|
name = "INDR";
|
|
break;
|
|
case BFD_MACH_O_N_PBUD:
|
|
name = "PBUD";
|
|
break;
|
|
case BFD_MACH_O_N_SECT:
|
|
name = "SECT";
|
|
break;
|
|
default:
|
|
name = "???";
|
|
break;
|
|
}
|
|
if (name == NULL)
|
|
name = "";
|
|
fprintf (file, " %02x %-6s %02x %04x",
|
|
asym->n_type, name, asym->n_sect, asym->n_desc);
|
|
if ((asym->n_type & BFD_MACH_O_N_STAB) == 0
|
|
&& (asym->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_SECT)
|
|
fprintf (file, " [%s]", symbol->section->name);
|
|
fprintf (file, " %s", symbol->name);
|
|
}
|
|
}
|
|
|
|
static void
|
|
bfd_mach_o_convert_architecture (bfd_mach_o_cpu_type mtype,
|
|
bfd_mach_o_cpu_subtype msubtype,
|
|
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;
|
|
*subtype = bfd_mach_i386_i386;
|
|
break;
|
|
case BFD_MACH_O_CPU_TYPE_X86_64:
|
|
*type = bfd_arch_i386;
|
|
*subtype = bfd_mach_x86_64;
|
|
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;
|
|
switch (msubtype)
|
|
{
|
|
case BFD_MACH_O_CPU_SUBTYPE_ARM_V4T:
|
|
*subtype = bfd_mach_arm_4T;
|
|
break;
|
|
case BFD_MACH_O_CPU_SUBTYPE_ARM_V6:
|
|
*subtype = bfd_mach_arm_4T; /* Best fit ? */
|
|
break;
|
|
case BFD_MACH_O_CPU_SUBTYPE_ARM_V5TEJ:
|
|
*subtype = bfd_mach_arm_5TE;
|
|
break;
|
|
case BFD_MACH_O_CPU_SUBTYPE_ARM_XSCALE:
|
|
*subtype = bfd_mach_arm_XScale;
|
|
break;
|
|
case BFD_MACH_O_CPU_SUBTYPE_ARM_V7:
|
|
*subtype = bfd_mach_arm_5TE; /* Best fit ? */
|
|
break;
|
|
case BFD_MACH_O_CPU_SUBTYPE_ARM_ALL:
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
case BFD_MACH_O_CPU_TYPE_MC88000:
|
|
*type = bfd_arch_m88k;
|
|
break;
|
|
case BFD_MACH_O_CPU_TYPE_SPARC:
|
|
*type = bfd_arch_sparc;
|
|
*subtype = bfd_mach_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;
|
|
*subtype = bfd_mach_ppc;
|
|
break;
|
|
case BFD_MACH_O_CPU_TYPE_POWERPC_64:
|
|
*type = bfd_arch_powerpc;
|
|
*subtype = bfd_mach_ppc64;
|
|
break;
|
|
case BFD_MACH_O_CPU_TYPE_ARM64:
|
|
*type = bfd_arch_aarch64;
|
|
*subtype = bfd_mach_aarch64;
|
|
break;
|
|
default:
|
|
*type = bfd_arch_unknown;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Write n NUL bytes to ABFD so that LEN + n is a multiple of 4. Return the
|
|
number of bytes written or -1 in case of error. */
|
|
|
|
static int
|
|
bfd_mach_o_pad4 (bfd *abfd, unsigned int len)
|
|
{
|
|
if (len % 4 != 0)
|
|
{
|
|
char pad[4] = {0,0,0,0};
|
|
unsigned int padlen = 4 - (len % 4);
|
|
|
|
if (bfd_bwrite (pad, padlen, abfd) != padlen)
|
|
return -1;
|
|
|
|
return padlen;
|
|
}
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/* Likewise, but for a command. */
|
|
|
|
static int
|
|
bfd_mach_o_pad_command (bfd *abfd, unsigned int len)
|
|
{
|
|
unsigned int align = bfd_mach_o_wide_p (abfd) ? 8 : 4;
|
|
|
|
if (len % align != 0)
|
|
{
|
|
char pad[8] = {0};
|
|
unsigned int padlen = align - (len % align);
|
|
|
|
if (bfd_bwrite (pad, padlen, abfd) != padlen)
|
|
return -1;
|
|
|
|
return padlen;
|
|
}
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_write_header (bfd *abfd, bfd_mach_o_header *header)
|
|
{
|
|
struct mach_o_header_external raw;
|
|
unsigned int size;
|
|
|
|
size = mach_o_wide_p (header) ?
|
|
BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
|
|
|
|
bfd_h_put_32 (abfd, header->magic, raw.magic);
|
|
bfd_h_put_32 (abfd, header->cputype, raw.cputype);
|
|
bfd_h_put_32 (abfd, header->cpusubtype, raw.cpusubtype);
|
|
bfd_h_put_32 (abfd, header->filetype, raw.filetype);
|
|
bfd_h_put_32 (abfd, header->ncmds, raw.ncmds);
|
|
bfd_h_put_32 (abfd, header->sizeofcmds, raw.sizeofcmds);
|
|
bfd_h_put_32 (abfd, header->flags, raw.flags);
|
|
|
|
if (mach_o_wide_p (header))
|
|
bfd_h_put_32 (abfd, header->reserved, raw.reserved);
|
|
|
|
if (bfd_seek (abfd, 0, SEEK_SET) != 0
|
|
|| bfd_bwrite (&raw, size, abfd) != size)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_write_thread (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_thread_command *cmd = &command->command.thread;
|
|
unsigned int i;
|
|
struct mach_o_thread_command_external raw;
|
|
unsigned int offset;
|
|
|
|
BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
|
|
|| (command->type == BFD_MACH_O_LC_UNIXTHREAD));
|
|
|
|
offset = BFD_MACH_O_LC_SIZE;
|
|
for (i = 0; i < cmd->nflavours; i++)
|
|
{
|
|
BFD_ASSERT ((cmd->flavours[i].size % 4) == 0);
|
|
BFD_ASSERT (cmd->flavours[i].offset ==
|
|
(command->offset + offset + BFD_MACH_O_LC_SIZE));
|
|
|
|
bfd_h_put_32 (abfd, cmd->flavours[i].flavour, raw.flavour);
|
|
bfd_h_put_32 (abfd, (cmd->flavours[i].size / 4), raw.count);
|
|
|
|
if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
|
|
|| bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
offset += cmd->flavours[i].size + sizeof (raw);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_write_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
|
|
struct mach_o_str_command_external raw;
|
|
unsigned int namelen;
|
|
|
|
bfd_h_put_32 (abfd, cmd->name_offset, raw.str);
|
|
|
|
if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
|
|
|| bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
namelen = strlen (cmd->name_str) + 1;
|
|
if (bfd_bwrite (cmd->name_str, namelen, abfd) != namelen)
|
|
return FALSE;
|
|
|
|
if (bfd_mach_o_pad_command (abfd, namelen) < 0)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_write_dylib (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_dylib_command *cmd = &command->command.dylib;
|
|
struct mach_o_dylib_command_external raw;
|
|
unsigned int namelen;
|
|
|
|
bfd_h_put_32 (abfd, cmd->name_offset, raw.name);
|
|
bfd_h_put_32 (abfd, cmd->timestamp, raw.timestamp);
|
|
bfd_h_put_32 (abfd, cmd->current_version, raw.current_version);
|
|
bfd_h_put_32 (abfd, cmd->compatibility_version, raw.compatibility_version);
|
|
|
|
if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
|
|
|| bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
namelen = strlen (cmd->name_str) + 1;
|
|
if (bfd_bwrite (cmd->name_str, namelen, abfd) != namelen)
|
|
return FALSE;
|
|
|
|
if (bfd_mach_o_pad_command (abfd, namelen) < 0)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_write_main (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_main_command *cmd = &command->command.main;
|
|
struct mach_o_entry_point_command_external raw;
|
|
|
|
bfd_h_put_64 (abfd, cmd->entryoff, raw.entryoff);
|
|
bfd_h_put_64 (abfd, cmd->stacksize, raw.stacksize);
|
|
|
|
if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
|
|
|| bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_write_dyld_info (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
|
|
struct mach_o_dyld_info_command_external raw;
|
|
|
|
bfd_h_put_32 (abfd, cmd->rebase_off, raw.rebase_off);
|
|
bfd_h_put_32 (abfd, cmd->rebase_size, raw.rebase_size);
|
|
bfd_h_put_32 (abfd, cmd->bind_off, raw.bind_off);
|
|
bfd_h_put_32 (abfd, cmd->bind_size, raw.bind_size);
|
|
bfd_h_put_32 (abfd, cmd->weak_bind_off, raw.weak_bind_off);
|
|
bfd_h_put_32 (abfd, cmd->weak_bind_size, raw.weak_bind_size);
|
|
bfd_h_put_32 (abfd, cmd->lazy_bind_off, raw.lazy_bind_off);
|
|
bfd_h_put_32 (abfd, cmd->lazy_bind_size, raw.lazy_bind_size);
|
|
bfd_h_put_32 (abfd, cmd->export_off, raw.export_off);
|
|
bfd_h_put_32 (abfd, cmd->export_size, raw.export_size);
|
|
|
|
if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
|
|
|| bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
if (cmd->rebase_size != 0)
|
|
if (bfd_seek (abfd, cmd->rebase_off, SEEK_SET) != 0
|
|
|| (bfd_bwrite (cmd->rebase_content, cmd->rebase_size, abfd) !=
|
|
cmd->rebase_size))
|
|
return FALSE;
|
|
|
|
if (cmd->bind_size != 0)
|
|
if (bfd_seek (abfd, cmd->bind_off, SEEK_SET) != 0
|
|
|| (bfd_bwrite (cmd->bind_content, cmd->bind_size, abfd) !=
|
|
cmd->bind_size))
|
|
return FALSE;
|
|
|
|
if (cmd->weak_bind_size != 0)
|
|
if (bfd_seek (abfd, cmd->weak_bind_off, SEEK_SET) != 0
|
|
|| (bfd_bwrite (cmd->weak_bind_content, cmd->weak_bind_size, abfd) !=
|
|
cmd->weak_bind_size))
|
|
return FALSE;
|
|
|
|
if (cmd->lazy_bind_size != 0)
|
|
if (bfd_seek (abfd, cmd->lazy_bind_off, SEEK_SET) != 0
|
|
|| (bfd_bwrite (cmd->lazy_bind_content, cmd->lazy_bind_size, abfd) !=
|
|
cmd->lazy_bind_size))
|
|
return FALSE;
|
|
|
|
if (cmd->export_size != 0)
|
|
if (bfd_seek (abfd, cmd->export_off, SEEK_SET) != 0
|
|
|| (bfd_bwrite (cmd->export_content, cmd->export_size, abfd) !=
|
|
cmd->export_size))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
long
|
|
bfd_mach_o_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED,
|
|
asection *asect)
|
|
{
|
|
return (asect->reloc_count + 1) * sizeof (arelent *);
|
|
}
|
|
|
|
/* In addition to the need to byte-swap the symbol number, the bit positions
|
|
of the fields in the relocation information vary per target endian-ness. */
|
|
|
|
void
|
|
bfd_mach_o_swap_in_non_scattered_reloc (bfd *abfd, bfd_mach_o_reloc_info *rel,
|
|
unsigned char *fields)
|
|
{
|
|
unsigned char info = fields[3];
|
|
|
|
if (bfd_big_endian (abfd))
|
|
{
|
|
rel->r_value = (fields[0] << 16) | (fields[1] << 8) | fields[2];
|
|
rel->r_type = (info >> BFD_MACH_O_BE_TYPE_SHIFT) & BFD_MACH_O_TYPE_MASK;
|
|
rel->r_pcrel = (info & BFD_MACH_O_BE_PCREL) ? 1 : 0;
|
|
rel->r_length = (info >> BFD_MACH_O_BE_LENGTH_SHIFT)
|
|
& BFD_MACH_O_LENGTH_MASK;
|
|
rel->r_extern = (info & BFD_MACH_O_BE_EXTERN) ? 1 : 0;
|
|
}
|
|
else
|
|
{
|
|
rel->r_value = (fields[2] << 16) | (fields[1] << 8) | fields[0];
|
|
rel->r_type = (info >> BFD_MACH_O_LE_TYPE_SHIFT) & BFD_MACH_O_TYPE_MASK;
|
|
rel->r_pcrel = (info & BFD_MACH_O_LE_PCREL) ? 1 : 0;
|
|
rel->r_length = (info >> BFD_MACH_O_LE_LENGTH_SHIFT)
|
|
& BFD_MACH_O_LENGTH_MASK;
|
|
rel->r_extern = (info & BFD_MACH_O_LE_EXTERN) ? 1 : 0;
|
|
}
|
|
}
|
|
|
|
/* Set syms_ptr_ptr and addend of RES. */
|
|
|
|
bfd_boolean
|
|
bfd_mach_o_canonicalize_non_scattered_reloc (bfd *abfd,
|
|
bfd_mach_o_reloc_info *reloc,
|
|
arelent *res, asymbol **syms)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
unsigned int num;
|
|
asymbol **sym;
|
|
|
|
/* Non-scattered relocation. */
|
|
reloc->r_scattered = 0;
|
|
res->addend = 0;
|
|
|
|
num = reloc->r_value;
|
|
|
|
if (reloc->r_extern)
|
|
{
|
|
/* PR 17512: file: 8396-1185-0.004. */
|
|
if (num >= (unsigned) bfd_mach_o_count_symbols (abfd))
|
|
sym = bfd_und_section_ptr->symbol_ptr_ptr;
|
|
else if (syms == NULL)
|
|
sym = bfd_und_section_ptr->symbol_ptr_ptr;
|
|
else
|
|
/* An external symbol number. */
|
|
sym = syms + num;
|
|
}
|
|
else if (num == 0x00ffffff || num == 0)
|
|
{
|
|
/* The 'symnum' in a non-scattered PAIR is 0x00ffffff. But as this
|
|
is generic code, we don't know wether this is really a PAIR.
|
|
This value is almost certainly not a valid section number, hence
|
|
this specific case to avoid an assertion failure.
|
|
Target specific swap_reloc_in routine should adjust that. */
|
|
sym = bfd_abs_section_ptr->symbol_ptr_ptr;
|
|
}
|
|
else
|
|
{
|
|
/* PR 17512: file: 006-2964-0.004. */
|
|
if (num > mdata->nsects)
|
|
return FALSE;
|
|
|
|
/* A section number. */
|
|
sym = mdata->sections[num - 1]->bfdsection->symbol_ptr_ptr;
|
|
/* For a symbol defined in section S, the addend (stored in the
|
|
binary) contains the address of the section. To comply with
|
|
bfd convention, subtract the section address.
|
|
Use the address from the header, so that the user can modify
|
|
the vma of the section. */
|
|
res->addend = -mdata->sections[num - 1]->addr;
|
|
}
|
|
|
|
/* Note: Pairs for PPC LO/HI/HA are not scattered, but contain the offset
|
|
in the lower 16bits of the address value. So we have to find the
|
|
'symbol' from the preceding reloc. We do this even though the
|
|
section symbol is probably not needed here, because NULL symbol
|
|
values cause an assert in generic BFD code. This must be done in
|
|
the PPC swap_reloc_in routine. */
|
|
res->sym_ptr_ptr = sym;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Do most of the work for canonicalize_relocs on RAW: create internal
|
|
representation RELOC and set most fields of RES using symbol table SYMS.
|
|
Each target still has to set the howto of RES and possibly adjust other
|
|
fields.
|
|
Previously the Mach-O hook point was simply swap_in, but some targets
|
|
(like arm64) don't follow the generic rules (symnum is a value for the
|
|
non-scattered relocation ADDEND). */
|
|
|
|
bfd_boolean
|
|
bfd_mach_o_pre_canonicalize_one_reloc (bfd *abfd,
|
|
struct mach_o_reloc_info_external *raw,
|
|
bfd_mach_o_reloc_info *reloc,
|
|
arelent *res, asymbol **syms)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
bfd_vma addr;
|
|
|
|
addr = bfd_get_32 (abfd, raw->r_address);
|
|
res->sym_ptr_ptr = NULL;
|
|
res->addend = 0;
|
|
|
|
if (addr & BFD_MACH_O_SR_SCATTERED)
|
|
{
|
|
unsigned int j;
|
|
bfd_vma symnum = bfd_get_32 (abfd, raw->r_symbolnum);
|
|
|
|
/* Scattered relocation, can't be extern. */
|
|
reloc->r_scattered = 1;
|
|
reloc->r_extern = 0;
|
|
|
|
/* Extract section and offset from r_value (symnum). */
|
|
reloc->r_value = symnum;
|
|
/* FIXME: This breaks when a symbol in a reloc exactly follows the
|
|
end of the data for the section (e.g. in a calculation of section
|
|
data length). At present, the symbol will end up associated with
|
|
the following section or, if it falls within alignment padding, as
|
|
null - which will assert later. */
|
|
for (j = 0; j < mdata->nsects; j++)
|
|
{
|
|
bfd_mach_o_section *sect = mdata->sections[j];
|
|
if (symnum >= sect->addr && symnum < sect->addr + sect->size)
|
|
{
|
|
res->sym_ptr_ptr = sect->bfdsection->symbol_ptr_ptr;
|
|
res->addend = symnum - sect->addr;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Extract the info and address fields from r_address. */
|
|
reloc->r_type = BFD_MACH_O_GET_SR_TYPE (addr);
|
|
reloc->r_length = BFD_MACH_O_GET_SR_LENGTH (addr);
|
|
reloc->r_pcrel = addr & BFD_MACH_O_SR_PCREL;
|
|
reloc->r_address = BFD_MACH_O_GET_SR_TYPE (addr);
|
|
res->address = BFD_MACH_O_GET_SR_ADDRESS (addr);
|
|
}
|
|
else
|
|
{
|
|
/* Non-scattered relocation. */
|
|
reloc->r_scattered = 0;
|
|
reloc->r_address = addr;
|
|
res->address = addr;
|
|
|
|
/* The value and info fields have to be extracted dependent on target
|
|
endian-ness. */
|
|
bfd_mach_o_swap_in_non_scattered_reloc (abfd, reloc, raw->r_symbolnum);
|
|
|
|
if (!bfd_mach_o_canonicalize_non_scattered_reloc (abfd, reloc,
|
|
res, syms))
|
|
return FALSE;
|
|
}
|
|
|
|
/* We have set up a reloc with all the information present, so the swapper
|
|
can modify address, value and addend fields, if necessary, to convey
|
|
information in the generic BFD reloc that is mach-o specific. */
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static int
|
|
bfd_mach_o_canonicalize_relocs (bfd *abfd, unsigned long filepos,
|
|
unsigned long count,
|
|
arelent *res, asymbol **syms)
|
|
{
|
|
bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
|
|
unsigned long i;
|
|
struct mach_o_reloc_info_external *native_relocs;
|
|
bfd_size_type native_size;
|
|
|
|
/* Allocate and read relocs. */
|
|
native_size = count * BFD_MACH_O_RELENT_SIZE;
|
|
|
|
/* PR 17512: file: 09477b57. */
|
|
if (native_size < count)
|
|
return -1;
|
|
|
|
native_relocs =
|
|
(struct mach_o_reloc_info_external *) bfd_malloc (native_size);
|
|
if (native_relocs == NULL)
|
|
return -1;
|
|
|
|
if (bfd_seek (abfd, filepos, SEEK_SET) != 0
|
|
|| bfd_bread (native_relocs, native_size, abfd) != native_size)
|
|
goto err;
|
|
|
|
for (i = 0; i < count; i++)
|
|
{
|
|
if (!(*bed->_bfd_mach_o_canonicalize_one_reloc)(abfd, &native_relocs[i],
|
|
&res[i], syms))
|
|
goto err;
|
|
}
|
|
free (native_relocs);
|
|
return i;
|
|
err:
|
|
free (native_relocs);
|
|
return -1;
|
|
}
|
|
|
|
long
|
|
bfd_mach_o_canonicalize_reloc (bfd *abfd, asection *asect,
|
|
arelent **rels, asymbol **syms)
|
|
{
|
|
bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
|
|
unsigned long i;
|
|
arelent *res;
|
|
|
|
if (asect->reloc_count == 0)
|
|
return 0;
|
|
|
|
/* No need to go further if we don't know how to read relocs. */
|
|
if (bed->_bfd_mach_o_canonicalize_one_reloc == NULL)
|
|
return 0;
|
|
|
|
if (asect->relocation == NULL)
|
|
{
|
|
if (asect->reloc_count * sizeof (arelent) < asect->reloc_count)
|
|
return -1;
|
|
res = bfd_malloc (asect->reloc_count * sizeof (arelent));
|
|
if (res == NULL)
|
|
return -1;
|
|
|
|
if (bfd_mach_o_canonicalize_relocs (abfd, asect->rel_filepos,
|
|
asect->reloc_count, res, syms) < 0)
|
|
{
|
|
free (res);
|
|
return -1;
|
|
}
|
|
asect->relocation = res;
|
|
}
|
|
|
|
res = asect->relocation;
|
|
for (i = 0; i < asect->reloc_count; i++)
|
|
rels[i] = &res[i];
|
|
rels[i] = NULL;
|
|
|
|
return i;
|
|
}
|
|
|
|
long
|
|
bfd_mach_o_get_dynamic_reloc_upper_bound (bfd *abfd)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
|
|
if (mdata->dysymtab == NULL)
|
|
return 1;
|
|
return (mdata->dysymtab->nextrel + mdata->dysymtab->nlocrel + 1)
|
|
* sizeof (arelent *);
|
|
}
|
|
|
|
long
|
|
bfd_mach_o_canonicalize_dynamic_reloc (bfd *abfd, arelent **rels,
|
|
struct bfd_symbol **syms)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
|
|
bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
|
|
unsigned long i;
|
|
arelent *res;
|
|
|
|
if (dysymtab == NULL)
|
|
return 0;
|
|
if (dysymtab->nextrel == 0 && dysymtab->nlocrel == 0)
|
|
return 0;
|
|
|
|
/* No need to go further if we don't know how to read relocs. */
|
|
if (bed->_bfd_mach_o_canonicalize_one_reloc == NULL)
|
|
return 0;
|
|
|
|
if (mdata->dyn_reloc_cache == NULL)
|
|
{
|
|
if ((dysymtab->nextrel + dysymtab->nlocrel) * sizeof (arelent)
|
|
< (dysymtab->nextrel + dysymtab->nlocrel))
|
|
return -1;
|
|
|
|
res = bfd_malloc ((dysymtab->nextrel + dysymtab->nlocrel)
|
|
* sizeof (arelent));
|
|
if (res == NULL)
|
|
return -1;
|
|
|
|
if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->extreloff,
|
|
dysymtab->nextrel, res, syms) < 0)
|
|
{
|
|
free (res);
|
|
return -1;
|
|
}
|
|
|
|
if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->locreloff,
|
|
dysymtab->nlocrel,
|
|
res + dysymtab->nextrel, syms) < 0)
|
|
{
|
|
free (res);
|
|
return -1;
|
|
}
|
|
|
|
mdata->dyn_reloc_cache = res;
|
|
}
|
|
|
|
res = mdata->dyn_reloc_cache;
|
|
for (i = 0; i < dysymtab->nextrel + dysymtab->nlocrel; i++)
|
|
rels[i] = &res[i];
|
|
rels[i] = NULL;
|
|
return i;
|
|
}
|
|
|
|
/* In addition to the need to byte-swap the symbol number, the bit positions
|
|
of the fields in the relocation information vary per target endian-ness. */
|
|
|
|
static void
|
|
bfd_mach_o_swap_out_non_scattered_reloc (bfd *abfd, unsigned char *fields,
|
|
bfd_mach_o_reloc_info *rel)
|
|
{
|
|
unsigned char info = 0;
|
|
|
|
BFD_ASSERT (rel->r_type <= 15);
|
|
BFD_ASSERT (rel->r_length <= 3);
|
|
|
|
if (bfd_big_endian (abfd))
|
|
{
|
|
fields[0] = (rel->r_value >> 16) & 0xff;
|
|
fields[1] = (rel->r_value >> 8) & 0xff;
|
|
fields[2] = rel->r_value & 0xff;
|
|
info |= rel->r_type << BFD_MACH_O_BE_TYPE_SHIFT;
|
|
info |= rel->r_pcrel ? BFD_MACH_O_BE_PCREL : 0;
|
|
info |= rel->r_length << BFD_MACH_O_BE_LENGTH_SHIFT;
|
|
info |= rel->r_extern ? BFD_MACH_O_BE_EXTERN : 0;
|
|
}
|
|
else
|
|
{
|
|
fields[2] = (rel->r_value >> 16) & 0xff;
|
|
fields[1] = (rel->r_value >> 8) & 0xff;
|
|
fields[0] = rel->r_value & 0xff;
|
|
info |= rel->r_type << BFD_MACH_O_LE_TYPE_SHIFT;
|
|
info |= rel->r_pcrel ? BFD_MACH_O_LE_PCREL : 0;
|
|
info |= rel->r_length << BFD_MACH_O_LE_LENGTH_SHIFT;
|
|
info |= rel->r_extern ? BFD_MACH_O_LE_EXTERN : 0;
|
|
}
|
|
fields[3] = info;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_write_relocs (bfd *abfd, bfd_mach_o_section *section)
|
|
{
|
|
unsigned int i;
|
|
arelent **entries;
|
|
asection *sec;
|
|
bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
|
|
|
|
sec = section->bfdsection;
|
|
if (sec->reloc_count == 0)
|
|
return TRUE;
|
|
|
|
if (bed->_bfd_mach_o_swap_reloc_out == NULL)
|
|
return TRUE;
|
|
|
|
if (bfd_seek (abfd, section->reloff, SEEK_SET) != 0)
|
|
return FALSE;
|
|
|
|
/* Convert and write. */
|
|
entries = section->bfdsection->orelocation;
|
|
for (i = 0; i < section->nreloc; i++)
|
|
{
|
|
arelent *rel = entries[i];
|
|
struct mach_o_reloc_info_external raw;
|
|
bfd_mach_o_reloc_info info, *pinfo = &info;
|
|
|
|
/* Convert relocation to an intermediate representation. */
|
|
if (!(*bed->_bfd_mach_o_swap_reloc_out) (rel, pinfo))
|
|
return FALSE;
|
|
|
|
/* Lower the relocation info. */
|
|
if (pinfo->r_scattered)
|
|
{
|
|
unsigned long v;
|
|
|
|
v = BFD_MACH_O_SR_SCATTERED
|
|
| (pinfo->r_pcrel ? BFD_MACH_O_SR_PCREL : 0)
|
|
| BFD_MACH_O_SET_SR_LENGTH (pinfo->r_length)
|
|
| BFD_MACH_O_SET_SR_TYPE (pinfo->r_type)
|
|
| BFD_MACH_O_SET_SR_ADDRESS (pinfo->r_address);
|
|
/* Note: scattered relocs have field in reverse order... */
|
|
bfd_put_32 (abfd, v, raw.r_address);
|
|
bfd_put_32 (abfd, pinfo->r_value, raw.r_symbolnum);
|
|
}
|
|
else
|
|
{
|
|
bfd_put_32 (abfd, pinfo->r_address, raw.r_address);
|
|
bfd_mach_o_swap_out_non_scattered_reloc (abfd, raw.r_symbolnum,
|
|
pinfo);
|
|
}
|
|
|
|
if (bfd_bwrite (&raw, BFD_MACH_O_RELENT_SIZE, abfd)
|
|
!= BFD_MACH_O_RELENT_SIZE)
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_write_section_32 (bfd *abfd, bfd_mach_o_section *section)
|
|
{
|
|
struct mach_o_section_32_external raw;
|
|
|
|
memcpy (raw.sectname, section->sectname, 16);
|
|
memcpy (raw.segname, section->segname, 16);
|
|
bfd_h_put_32 (abfd, section->addr, raw.addr);
|
|
bfd_h_put_32 (abfd, section->size, raw.size);
|
|
bfd_h_put_32 (abfd, section->offset, raw.offset);
|
|
bfd_h_put_32 (abfd, section->align, raw.align);
|
|
bfd_h_put_32 (abfd, section->reloff, raw.reloff);
|
|
bfd_h_put_32 (abfd, section->nreloc, raw.nreloc);
|
|
bfd_h_put_32 (abfd, section->flags, raw.flags);
|
|
bfd_h_put_32 (abfd, section->reserved1, raw.reserved1);
|
|
bfd_h_put_32 (abfd, section->reserved2, raw.reserved2);
|
|
|
|
if (bfd_bwrite (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
|
|
!= BFD_MACH_O_SECTION_SIZE)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_write_section_64 (bfd *abfd, bfd_mach_o_section *section)
|
|
{
|
|
struct mach_o_section_64_external raw;
|
|
|
|
memcpy (raw.sectname, section->sectname, 16);
|
|
memcpy (raw.segname, section->segname, 16);
|
|
bfd_h_put_64 (abfd, section->addr, raw.addr);
|
|
bfd_h_put_64 (abfd, section->size, raw.size);
|
|
bfd_h_put_32 (abfd, section->offset, raw.offset);
|
|
bfd_h_put_32 (abfd, section->align, raw.align);
|
|
bfd_h_put_32 (abfd, section->reloff, raw.reloff);
|
|
bfd_h_put_32 (abfd, section->nreloc, raw.nreloc);
|
|
bfd_h_put_32 (abfd, section->flags, raw.flags);
|
|
bfd_h_put_32 (abfd, section->reserved1, raw.reserved1);
|
|
bfd_h_put_32 (abfd, section->reserved2, raw.reserved2);
|
|
bfd_h_put_32 (abfd, section->reserved3, raw.reserved3);
|
|
|
|
if (bfd_bwrite (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
|
|
!= BFD_MACH_O_SECTION_64_SIZE)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_write_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
struct mach_o_segment_command_32_external raw;
|
|
bfd_mach_o_segment_command *seg = &command->command.segment;
|
|
bfd_mach_o_section *sec;
|
|
|
|
BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
|
|
|
|
for (sec = seg->sect_head; sec != NULL; sec = sec->next)
|
|
if (!bfd_mach_o_write_relocs (abfd, sec))
|
|
return FALSE;
|
|
|
|
memcpy (raw.segname, seg->segname, 16);
|
|
bfd_h_put_32 (abfd, seg->vmaddr, raw.vmaddr);
|
|
bfd_h_put_32 (abfd, seg->vmsize, raw.vmsize);
|
|
bfd_h_put_32 (abfd, seg->fileoff, raw.fileoff);
|
|
bfd_h_put_32 (abfd, seg->filesize, raw.filesize);
|
|
bfd_h_put_32 (abfd, seg->maxprot, raw.maxprot);
|
|
bfd_h_put_32 (abfd, seg->initprot, raw.initprot);
|
|
bfd_h_put_32 (abfd, seg->nsects, raw.nsects);
|
|
bfd_h_put_32 (abfd, seg->flags, raw.flags);
|
|
|
|
if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
|
|
|| bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
for (sec = seg->sect_head; sec != NULL; sec = sec->next)
|
|
if (!bfd_mach_o_write_section_32 (abfd, sec))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_write_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
struct mach_o_segment_command_64_external raw;
|
|
bfd_mach_o_segment_command *seg = &command->command.segment;
|
|
bfd_mach_o_section *sec;
|
|
|
|
BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
|
|
|
|
for (sec = seg->sect_head; sec != NULL; sec = sec->next)
|
|
if (!bfd_mach_o_write_relocs (abfd, sec))
|
|
return FALSE;
|
|
|
|
memcpy (raw.segname, seg->segname, 16);
|
|
bfd_h_put_64 (abfd, seg->vmaddr, raw.vmaddr);
|
|
bfd_h_put_64 (abfd, seg->vmsize, raw.vmsize);
|
|
bfd_h_put_64 (abfd, seg->fileoff, raw.fileoff);
|
|
bfd_h_put_64 (abfd, seg->filesize, raw.filesize);
|
|
bfd_h_put_32 (abfd, seg->maxprot, raw.maxprot);
|
|
bfd_h_put_32 (abfd, seg->initprot, raw.initprot);
|
|
bfd_h_put_32 (abfd, seg->nsects, raw.nsects);
|
|
bfd_h_put_32 (abfd, seg->flags, raw.flags);
|
|
|
|
if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
|
|
|| bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
for (sec = seg->sect_head; sec != NULL; sec = sec->next)
|
|
if (!bfd_mach_o_write_section_64 (abfd, sec))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_write_symtab_content (bfd *abfd, bfd_mach_o_symtab_command *sym)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
unsigned long i;
|
|
unsigned int wide = bfd_mach_o_wide_p (abfd);
|
|
struct bfd_strtab_hash *strtab;
|
|
asymbol **symbols = bfd_get_outsymbols (abfd);
|
|
int padlen;
|
|
|
|
/* Write the symbols first. */
|
|
if (bfd_seek (abfd, sym->symoff, SEEK_SET) != 0)
|
|
return FALSE;
|
|
|
|
strtab = _bfd_stringtab_init ();
|
|
if (strtab == NULL)
|
|
return FALSE;
|
|
|
|
if (sym->nsyms > 0)
|
|
/* Although we don't strictly need to do this, for compatibility with
|
|
Darwin system tools, actually output an empty string for the index
|
|
0 entry. */
|
|
_bfd_stringtab_add (strtab, "", TRUE, FALSE);
|
|
|
|
for (i = 0; i < sym->nsyms; i++)
|
|
{
|
|
bfd_size_type str_index;
|
|
bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
|
|
|
|
if (s->symbol.name == 0 || s->symbol.name[0] == '\0')
|
|
/* An index of 0 always means the empty string. */
|
|
str_index = 0;
|
|
else
|
|
{
|
|
str_index = _bfd_stringtab_add (strtab, s->symbol.name, TRUE, FALSE);
|
|
|
|
if (str_index == (bfd_size_type) -1)
|
|
goto err;
|
|
}
|
|
|
|
if (wide)
|
|
{
|
|
struct mach_o_nlist_64_external raw;
|
|
|
|
bfd_h_put_32 (abfd, str_index, raw.n_strx);
|
|
bfd_h_put_8 (abfd, s->n_type, raw.n_type);
|
|
bfd_h_put_8 (abfd, s->n_sect, raw.n_sect);
|
|
bfd_h_put_16 (abfd, s->n_desc, raw.n_desc);
|
|
bfd_h_put_64 (abfd, s->symbol.section->vma + s->symbol.value,
|
|
raw.n_value);
|
|
|
|
if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
goto err;
|
|
}
|
|
else
|
|
{
|
|
struct mach_o_nlist_external raw;
|
|
|
|
bfd_h_put_32 (abfd, str_index, raw.n_strx);
|
|
bfd_h_put_8 (abfd, s->n_type, raw.n_type);
|
|
bfd_h_put_8 (abfd, s->n_sect, raw.n_sect);
|
|
bfd_h_put_16 (abfd, s->n_desc, raw.n_desc);
|
|
bfd_h_put_32 (abfd, s->symbol.section->vma + s->symbol.value,
|
|
raw.n_value);
|
|
|
|
if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
goto err;
|
|
}
|
|
}
|
|
sym->strsize = _bfd_stringtab_size (strtab);
|
|
sym->stroff = mdata->filelen;
|
|
mdata->filelen += sym->strsize;
|
|
|
|
if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0)
|
|
goto err;
|
|
|
|
if (_bfd_stringtab_emit (abfd, strtab) != TRUE)
|
|
goto err;
|
|
|
|
/* Pad string table. */
|
|
padlen = bfd_mach_o_pad4 (abfd, sym->strsize);
|
|
if (padlen < 0)
|
|
return FALSE;
|
|
mdata->filelen += padlen;
|
|
sym->strsize += padlen;
|
|
|
|
return TRUE;
|
|
|
|
err:
|
|
_bfd_stringtab_free (strtab);
|
|
sym->strsize = 0;
|
|
return FALSE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_write_symtab (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_symtab_command *sym = &command->command.symtab;
|
|
struct mach_o_symtab_command_external raw;
|
|
|
|
BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
|
|
|
|
/* The command. */
|
|
bfd_h_put_32 (abfd, sym->symoff, raw.symoff);
|
|
bfd_h_put_32 (abfd, sym->nsyms, raw.nsyms);
|
|
bfd_h_put_32 (abfd, sym->stroff, raw.stroff);
|
|
bfd_h_put_32 (abfd, sym->strsize, raw.strsize);
|
|
|
|
if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
|
|
|| bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Count the number of indirect symbols in the image.
|
|
Requires that the sections are in their final order. */
|
|
|
|
static unsigned int
|
|
bfd_mach_o_count_indirect_symbols (bfd *abfd, bfd_mach_o_data_struct *mdata)
|
|
{
|
|
unsigned int i;
|
|
unsigned int nisyms = 0;
|
|
|
|
for (i = 0; i < mdata->nsects; ++i)
|
|
{
|
|
bfd_mach_o_section *sec = mdata->sections[i];
|
|
|
|
switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
|
|
{
|
|
case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
|
|
case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
|
|
case BFD_MACH_O_S_SYMBOL_STUBS:
|
|
nisyms += bfd_mach_o_section_get_nbr_indirect (abfd, sec);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
return nisyms;
|
|
}
|
|
|
|
/* Create the dysymtab. */
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_build_dysymtab (bfd *abfd, bfd_mach_o_dysymtab_command *cmd)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
|
|
/* TODO:
|
|
We are not going to try and fill these in yet and, moreover, we are
|
|
going to bail if they are already set. */
|
|
if (cmd->nmodtab != 0
|
|
|| cmd->ntoc != 0
|
|
|| cmd->nextrefsyms != 0)
|
|
{
|
|
_bfd_error_handler (_("sorry: modtab, toc and extrefsyms are not yet"
|
|
" implemented for dysymtab commands."));
|
|
return FALSE;
|
|
}
|
|
|
|
cmd->ilocalsym = 0;
|
|
|
|
if (bfd_get_symcount (abfd) > 0)
|
|
{
|
|
asymbol **symbols = bfd_get_outsymbols (abfd);
|
|
unsigned long i;
|
|
|
|
/* Count the number of each kind of symbol. */
|
|
for (i = 0; i < bfd_get_symcount (abfd); ++i)
|
|
{
|
|
bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
|
|
if (s->n_type & (BFD_MACH_O_N_EXT | BFD_MACH_O_N_PEXT))
|
|
break;
|
|
}
|
|
cmd->nlocalsym = i;
|
|
cmd->iextdefsym = i;
|
|
for (; i < bfd_get_symcount (abfd); ++i)
|
|
{
|
|
bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
|
|
if ((s->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_UNDF)
|
|
break;
|
|
}
|
|
cmd->nextdefsym = i - cmd->nlocalsym;
|
|
cmd->iundefsym = cmd->nextdefsym + cmd->iextdefsym;
|
|
cmd->nundefsym = bfd_get_symcount (abfd)
|
|
- cmd->nlocalsym
|
|
- cmd->nextdefsym;
|
|
}
|
|
else
|
|
{
|
|
cmd->nlocalsym = 0;
|
|
cmd->iextdefsym = 0;
|
|
cmd->nextdefsym = 0;
|
|
cmd->iundefsym = 0;
|
|
cmd->nundefsym = 0;
|
|
}
|
|
|
|
cmd->nindirectsyms = bfd_mach_o_count_indirect_symbols (abfd, mdata);
|
|
if (cmd->nindirectsyms > 0)
|
|
{
|
|
unsigned i;
|
|
unsigned n;
|
|
|
|
mdata->filelen = FILE_ALIGN (mdata->filelen, 2);
|
|
cmd->indirectsymoff = mdata->filelen;
|
|
mdata->filelen += cmd->nindirectsyms * 4;
|
|
|
|
if (cmd->nindirectsyms * 4 < cmd->nindirectsyms)
|
|
return FALSE;
|
|
cmd->indirect_syms = bfd_zalloc (abfd, cmd->nindirectsyms * 4);
|
|
if (cmd->indirect_syms == NULL)
|
|
return FALSE;
|
|
|
|
n = 0;
|
|
for (i = 0; i < mdata->nsects; ++i)
|
|
{
|
|
bfd_mach_o_section *sec = mdata->sections[i];
|
|
|
|
switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
|
|
{
|
|
case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
|
|
case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
|
|
case BFD_MACH_O_S_SYMBOL_STUBS:
|
|
{
|
|
unsigned j, num;
|
|
bfd_mach_o_asymbol **isyms = sec->indirect_syms;
|
|
|
|
num = bfd_mach_o_section_get_nbr_indirect (abfd, sec);
|
|
if (isyms == NULL || num == 0)
|
|
break;
|
|
/* Record the starting index in the reserved1 field. */
|
|
sec->reserved1 = n;
|
|
for (j = 0; j < num; j++, n++)
|
|
{
|
|
if (isyms[j] == NULL)
|
|
cmd->indirect_syms[n] = BFD_MACH_O_INDIRECT_SYM_LOCAL;
|
|
else if (isyms[j]->symbol.section == bfd_abs_section_ptr
|
|
&& ! (isyms[j]->n_type & BFD_MACH_O_N_EXT))
|
|
cmd->indirect_syms[n] = BFD_MACH_O_INDIRECT_SYM_LOCAL
|
|
| BFD_MACH_O_INDIRECT_SYM_ABS;
|
|
else
|
|
cmd->indirect_syms[n] = isyms[j]->symbol.udata.i;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Write a dysymtab command.
|
|
TODO: Possibly coalesce writes of smaller objects. */
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_write_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
|
|
|
|
BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
|
|
|
|
if (cmd->nmodtab != 0)
|
|
{
|
|
unsigned int i;
|
|
|
|
if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
|
|
return FALSE;
|
|
|
|
for (i = 0; i < cmd->nmodtab; i++)
|
|
{
|
|
bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
|
|
unsigned int iinit;
|
|
unsigned int ninit;
|
|
|
|
iinit = module->iinit & 0xffff;
|
|
iinit |= ((module->iterm & 0xffff) << 16);
|
|
|
|
ninit = module->ninit & 0xffff;
|
|
ninit |= ((module->nterm & 0xffff) << 16);
|
|
|
|
if (bfd_mach_o_wide_p (abfd))
|
|
{
|
|
struct mach_o_dylib_module_64_external w;
|
|
|
|
bfd_h_put_32 (abfd, module->module_name_idx, &w.module_name);
|
|
bfd_h_put_32 (abfd, module->iextdefsym, &w.iextdefsym);
|
|
bfd_h_put_32 (abfd, module->nextdefsym, &w.nextdefsym);
|
|
bfd_h_put_32 (abfd, module->irefsym, &w.irefsym);
|
|
bfd_h_put_32 (abfd, module->nrefsym, &w.nrefsym);
|
|
bfd_h_put_32 (abfd, module->ilocalsym, &w.ilocalsym);
|
|
bfd_h_put_32 (abfd, module->nlocalsym, &w.nlocalsym);
|
|
bfd_h_put_32 (abfd, module->iextrel, &w.iextrel);
|
|
bfd_h_put_32 (abfd, module->nextrel, &w.nextrel);
|
|
bfd_h_put_32 (abfd, iinit, &w.iinit_iterm);
|
|
bfd_h_put_32 (abfd, ninit, &w.ninit_nterm);
|
|
bfd_h_put_64 (abfd, module->objc_module_info_addr,
|
|
&w.objc_module_info_addr);
|
|
bfd_h_put_32 (abfd, module->objc_module_info_size,
|
|
&w.objc_module_info_size);
|
|
|
|
if (bfd_bwrite ((void *) &w, sizeof (w), abfd) != sizeof (w))
|
|
return FALSE;
|
|
}
|
|
else
|
|
{
|
|
struct mach_o_dylib_module_external n;
|
|
|
|
bfd_h_put_32 (abfd, module->module_name_idx, &n.module_name);
|
|
bfd_h_put_32 (abfd, module->iextdefsym, &n.iextdefsym);
|
|
bfd_h_put_32 (abfd, module->nextdefsym, &n.nextdefsym);
|
|
bfd_h_put_32 (abfd, module->irefsym, &n.irefsym);
|
|
bfd_h_put_32 (abfd, module->nrefsym, &n.nrefsym);
|
|
bfd_h_put_32 (abfd, module->ilocalsym, &n.ilocalsym);
|
|
bfd_h_put_32 (abfd, module->nlocalsym, &n.nlocalsym);
|
|
bfd_h_put_32 (abfd, module->iextrel, &n.iextrel);
|
|
bfd_h_put_32 (abfd, module->nextrel, &n.nextrel);
|
|
bfd_h_put_32 (abfd, iinit, &n.iinit_iterm);
|
|
bfd_h_put_32 (abfd, ninit, &n.ninit_nterm);
|
|
bfd_h_put_32 (abfd, module->objc_module_info_addr,
|
|
&n.objc_module_info_addr);
|
|
bfd_h_put_32 (abfd, module->objc_module_info_size,
|
|
&n.objc_module_info_size);
|
|
|
|
if (bfd_bwrite ((void *) &n, sizeof (n), abfd) != sizeof (n))
|
|
return FALSE;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (cmd->ntoc != 0)
|
|
{
|
|
unsigned int i;
|
|
|
|
if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
|
|
return FALSE;
|
|
|
|
for (i = 0; i < cmd->ntoc; i++)
|
|
{
|
|
struct mach_o_dylib_table_of_contents_external raw;
|
|
bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
|
|
|
|
bfd_h_put_32 (abfd, toc->symbol_index, &raw.symbol_index);
|
|
bfd_h_put_32 (abfd, toc->module_index, &raw.module_index);
|
|
|
|
if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
if (cmd->nindirectsyms > 0)
|
|
{
|
|
unsigned int i;
|
|
|
|
if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
|
|
return FALSE;
|
|
|
|
for (i = 0; i < cmd->nindirectsyms; ++i)
|
|
{
|
|
unsigned char raw[4];
|
|
|
|
bfd_h_put_32 (abfd, cmd->indirect_syms[i], &raw);
|
|
if (bfd_bwrite (raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
if (cmd->nextrefsyms != 0)
|
|
{
|
|
unsigned int i;
|
|
|
|
if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
|
|
return FALSE;
|
|
|
|
for (i = 0; i < cmd->nextrefsyms; i++)
|
|
{
|
|
unsigned long v;
|
|
unsigned char raw[4];
|
|
bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
|
|
|
|
/* Fields isym and flags are written as bit-fields, thus we need
|
|
a specific processing for endianness. */
|
|
|
|
if (bfd_big_endian (abfd))
|
|
{
|
|
v = ((ref->isym & 0xffffff) << 8);
|
|
v |= ref->flags & 0xff;
|
|
}
|
|
else
|
|
{
|
|
v = ref->isym & 0xffffff;
|
|
v |= ((ref->flags & 0xff) << 24);
|
|
}
|
|
|
|
bfd_h_put_32 (abfd, v, raw);
|
|
if (bfd_bwrite (raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/* The command. */
|
|
if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0)
|
|
return FALSE;
|
|
else
|
|
{
|
|
struct mach_o_dysymtab_command_external raw;
|
|
|
|
bfd_h_put_32 (abfd, cmd->ilocalsym, &raw.ilocalsym);
|
|
bfd_h_put_32 (abfd, cmd->nlocalsym, &raw.nlocalsym);
|
|
bfd_h_put_32 (abfd, cmd->iextdefsym, &raw.iextdefsym);
|
|
bfd_h_put_32 (abfd, cmd->nextdefsym, &raw.nextdefsym);
|
|
bfd_h_put_32 (abfd, cmd->iundefsym, &raw.iundefsym);
|
|
bfd_h_put_32 (abfd, cmd->nundefsym, &raw.nundefsym);
|
|
bfd_h_put_32 (abfd, cmd->tocoff, &raw.tocoff);
|
|
bfd_h_put_32 (abfd, cmd->ntoc, &raw.ntoc);
|
|
bfd_h_put_32 (abfd, cmd->modtaboff, &raw.modtaboff);
|
|
bfd_h_put_32 (abfd, cmd->nmodtab, &raw.nmodtab);
|
|
bfd_h_put_32 (abfd, cmd->extrefsymoff, &raw.extrefsymoff);
|
|
bfd_h_put_32 (abfd, cmd->nextrefsyms, &raw.nextrefsyms);
|
|
bfd_h_put_32 (abfd, cmd->indirectsymoff, &raw.indirectsymoff);
|
|
bfd_h_put_32 (abfd, cmd->nindirectsyms, &raw.nindirectsyms);
|
|
bfd_h_put_32 (abfd, cmd->extreloff, &raw.extreloff);
|
|
bfd_h_put_32 (abfd, cmd->nextrel, &raw.nextrel);
|
|
bfd_h_put_32 (abfd, cmd->locreloff, &raw.locreloff);
|
|
bfd_h_put_32 (abfd, cmd->nlocrel, &raw.nlocrel);
|
|
|
|
if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static unsigned
|
|
bfd_mach_o_primary_symbol_sort_key (bfd_mach_o_asymbol *s)
|
|
{
|
|
unsigned mtyp = s->n_type & BFD_MACH_O_N_TYPE;
|
|
|
|
/* Just leave debug symbols where they are (pretend they are local, and
|
|
then they will just be sorted on position). */
|
|
if (s->n_type & BFD_MACH_O_N_STAB)
|
|
return 0;
|
|
|
|
/* Local (we should never see an undefined local AFAICT). */
|
|
if (! (s->n_type & (BFD_MACH_O_N_EXT | BFD_MACH_O_N_PEXT)))
|
|
return 0;
|
|
|
|
/* Common symbols look like undefined externs. */
|
|
if (mtyp == BFD_MACH_O_N_UNDF)
|
|
return 2;
|
|
|
|
/* A defined non-local, non-debug symbol. */
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
bfd_mach_o_cf_symbols (const void *a, const void *b)
|
|
{
|
|
bfd_mach_o_asymbol *sa = *(bfd_mach_o_asymbol **) a;
|
|
bfd_mach_o_asymbol *sb = *(bfd_mach_o_asymbol **) b;
|
|
unsigned int soa, sob;
|
|
|
|
soa = bfd_mach_o_primary_symbol_sort_key (sa);
|
|
sob = bfd_mach_o_primary_symbol_sort_key (sb);
|
|
if (soa < sob)
|
|
return -1;
|
|
|
|
if (soa > sob)
|
|
return 1;
|
|
|
|
/* If it's local or stab, just preserve the input order. */
|
|
if (soa == 0)
|
|
{
|
|
if (sa->symbol.udata.i < sb->symbol.udata.i)
|
|
return -1;
|
|
if (sa->symbol.udata.i > sb->symbol.udata.i)
|
|
return 1;
|
|
|
|
/* This is probably an error. */
|
|
return 0;
|
|
}
|
|
|
|
/* The second sort key is name. */
|
|
return strcmp (sa->symbol.name, sb->symbol.name);
|
|
}
|
|
|
|
/* Process the symbols.
|
|
|
|
This should be OK for single-module files - but it is not likely to work
|
|
for multi-module shared libraries.
|
|
|
|
(a) If the application has not filled in the relevant mach-o fields, make
|
|
an estimate.
|
|
|
|
(b) Order them, like this:
|
|
( i) local.
|
|
(unsorted)
|
|
( ii) external defined
|
|
(by name)
|
|
(iii) external undefined/common
|
|
(by name)
|
|
( iv) common
|
|
(by name)
|
|
*/
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_mangle_symbols (bfd *abfd)
|
|
{
|
|
unsigned long i;
|
|
asymbol **symbols = bfd_get_outsymbols (abfd);
|
|
|
|
if (symbols == NULL || bfd_get_symcount (abfd) == 0)
|
|
return TRUE;
|
|
|
|
for (i = 0; i < bfd_get_symcount (abfd); i++)
|
|
{
|
|
bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
|
|
|
|
/* We use this value, which is out-of-range as a symbol index, to signal
|
|
that the mach-o-specific data are not filled in and need to be created
|
|
from the bfd values. It is much preferable for the application to do
|
|
this, since more meaningful diagnostics can be made that way. */
|
|
|
|
if (s->symbol.udata.i == SYM_MACHO_FIELDS_UNSET)
|
|
{
|
|
/* No symbol information has been set - therefore determine
|
|
it from the bfd symbol flags/info. */
|
|
if (s->symbol.section == bfd_abs_section_ptr)
|
|
s->n_type = BFD_MACH_O_N_ABS;
|
|
else if (s->symbol.section == bfd_und_section_ptr)
|
|
{
|
|
s->n_type = BFD_MACH_O_N_UNDF;
|
|
if (s->symbol.flags & BSF_WEAK)
|
|
s->n_desc |= BFD_MACH_O_N_WEAK_REF;
|
|
/* mach-o automatically makes undefined symbols extern. */
|
|
s->n_type |= BFD_MACH_O_N_EXT;
|
|
s->symbol.flags |= BSF_GLOBAL;
|
|
}
|
|
else if (s->symbol.section == bfd_com_section_ptr)
|
|
{
|
|
s->n_type = BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT;
|
|
s->symbol.flags |= BSF_GLOBAL;
|
|
}
|
|
else
|
|
s->n_type = BFD_MACH_O_N_SECT;
|
|
|
|
if (s->symbol.flags & BSF_GLOBAL)
|
|
s->n_type |= BFD_MACH_O_N_EXT;
|
|
}
|
|
|
|
/* Put the section index in, where required. */
|
|
if ((s->symbol.section != bfd_abs_section_ptr
|
|
&& s->symbol.section != bfd_und_section_ptr
|
|
&& s->symbol.section != bfd_com_section_ptr)
|
|
|| ((s->n_type & BFD_MACH_O_N_STAB) != 0
|
|
&& s->symbol.name == NULL))
|
|
s->n_sect = s->symbol.section->output_section->target_index;
|
|
|
|
/* Number to preserve order for local and debug syms. */
|
|
s->symbol.udata.i = i;
|
|
}
|
|
|
|
/* Sort the symbols. */
|
|
qsort ((void *) symbols, (size_t) bfd_get_symcount (abfd),
|
|
sizeof (asymbol *), bfd_mach_o_cf_symbols);
|
|
|
|
for (i = 0; i < bfd_get_symcount (abfd); ++i)
|
|
{
|
|
bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
|
|
s->symbol.udata.i = i; /* renumber. */
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* We build a flat table of sections, which can be re-ordered if necessary.
|
|
Fill in the section number and other mach-o-specific data. */
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_mangle_sections (bfd *abfd, bfd_mach_o_data_struct *mdata)
|
|
{
|
|
asection *sec;
|
|
unsigned target_index;
|
|
unsigned nsect;
|
|
|
|
nsect = bfd_count_sections (abfd);
|
|
|
|
/* Don't do it if it's already set - assume the application knows what it's
|
|
doing. */
|
|
if (mdata->nsects == nsect
|
|
&& (mdata->nsects == 0 || mdata->sections != NULL))
|
|
return TRUE;
|
|
|
|
/* We need to check that this can be done... */
|
|
if (nsect > 255)
|
|
{
|
|
_bfd_error_handler (_("mach-o: there are too many sections (%u)"
|
|
" maximum is 255,\n"), nsect);
|
|
return FALSE;
|
|
}
|
|
|
|
mdata->nsects = nsect;
|
|
mdata->sections = bfd_alloc2 (abfd,
|
|
mdata->nsects, sizeof (bfd_mach_o_section *));
|
|
if (mdata->sections == NULL)
|
|
return FALSE;
|
|
|
|
/* Create Mach-O sections.
|
|
Section type, attribute and align should have been set when the
|
|
section was created - either read in or specified. */
|
|
target_index = 0;
|
|
for (sec = abfd->sections; sec; sec = sec->next)
|
|
{
|
|
unsigned bfd_align = bfd_get_section_alignment (abfd, sec);
|
|
bfd_mach_o_section *msect = bfd_mach_o_get_mach_o_section (sec);
|
|
|
|
mdata->sections[target_index] = msect;
|
|
|
|
msect->addr = bfd_get_section_vma (abfd, sec);
|
|
msect->size = bfd_get_section_size (sec);
|
|
|
|
/* Use the largest alignment set, in case it was bumped after the
|
|
section was created. */
|
|
msect->align = msect->align > bfd_align ? msect->align : bfd_align;
|
|
|
|
msect->offset = 0;
|
|
sec->target_index = ++target_index;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
bfd_boolean
|
|
bfd_mach_o_write_contents (bfd *abfd)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
bfd_mach_o_load_command *cmd;
|
|
bfd_mach_o_symtab_command *symtab = NULL;
|
|
bfd_mach_o_dysymtab_command *dysymtab = NULL;
|
|
bfd_mach_o_segment_command *linkedit = NULL;
|
|
|
|
/* Make the commands, if not already present. */
|
|
if (!abfd->output_has_begun && !bfd_mach_o_build_commands (abfd))
|
|
return FALSE;
|
|
abfd->output_has_begun = TRUE;
|
|
|
|
/* Write the header. */
|
|
if (!bfd_mach_o_write_header (abfd, &mdata->header))
|
|
return FALSE;
|
|
|
|
/* First pass: allocate the linkedit segment. */
|
|
for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
|
|
switch (cmd->type)
|
|
{
|
|
case BFD_MACH_O_LC_SEGMENT_64:
|
|
case BFD_MACH_O_LC_SEGMENT:
|
|
if (strcmp (cmd->command.segment.segname, "__LINKEDIT") == 0)
|
|
linkedit = &cmd->command.segment;
|
|
break;
|
|
case BFD_MACH_O_LC_SYMTAB:
|
|
symtab = &cmd->command.symtab;
|
|
break;
|
|
case BFD_MACH_O_LC_DYSYMTAB:
|
|
dysymtab = &cmd->command.dysymtab;
|
|
break;
|
|
case BFD_MACH_O_LC_DYLD_INFO:
|
|
{
|
|
bfd_mach_o_dyld_info_command *di = &cmd->command.dyld_info;
|
|
|
|
if (di->rebase_size != 0)
|
|
{
|
|
di->rebase_off = mdata->filelen;
|
|
mdata->filelen += di->rebase_size;
|
|
}
|
|
if (di->bind_size != 0)
|
|
{
|
|
di->bind_off = mdata->filelen;
|
|
mdata->filelen += di->bind_size;
|
|
}
|
|
if (di->weak_bind_size != 0)
|
|
{
|
|
di->weak_bind_off = mdata->filelen;
|
|
mdata->filelen += di->weak_bind_size;
|
|
}
|
|
if (di->lazy_bind_size != 0)
|
|
{
|
|
di->lazy_bind_off = mdata->filelen;
|
|
mdata->filelen += di->lazy_bind_size;
|
|
}
|
|
if (di->export_size != 0)
|
|
{
|
|
di->export_off = mdata->filelen;
|
|
mdata->filelen += di->export_size;
|
|
}
|
|
}
|
|
break;
|
|
case BFD_MACH_O_LC_LOAD_DYLIB:
|
|
case BFD_MACH_O_LC_LOAD_DYLINKER:
|
|
case BFD_MACH_O_LC_MAIN:
|
|
/* Nothing to do. */
|
|
break;
|
|
default:
|
|
_bfd_error_handler
|
|
(_("unable to allocate data for load command 0x%lx"),
|
|
(unsigned long) cmd->type);
|
|
break;
|
|
}
|
|
|
|
/* Specially handle symtab and dysymtab. */
|
|
|
|
/* Pre-allocate the symbol table (but not the string table). The reason
|
|
is that the dysymtab is after the symbol table but before the string
|
|
table (required by the native strip tool). */
|
|
if (symtab != NULL)
|
|
{
|
|
unsigned int symlen;
|
|
unsigned int wide = bfd_mach_o_wide_p (abfd);
|
|
|
|
symlen = wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
|
|
|
|
/* Align for symbols. */
|
|
mdata->filelen = FILE_ALIGN (mdata->filelen, wide ? 3 : 2);
|
|
symtab->symoff = mdata->filelen;
|
|
|
|
symtab->nsyms = bfd_get_symcount (abfd);
|
|
mdata->filelen += symtab->nsyms * symlen;
|
|
}
|
|
|
|
/* Build the dysymtab. */
|
|
if (dysymtab != NULL)
|
|
if (!bfd_mach_o_build_dysymtab (abfd, dysymtab))
|
|
return FALSE;
|
|
|
|
/* Write symtab and strtab. */
|
|
if (symtab != NULL)
|
|
if (!bfd_mach_o_write_symtab_content (abfd, symtab))
|
|
return FALSE;
|
|
|
|
/* Adjust linkedit size. */
|
|
if (linkedit != NULL)
|
|
{
|
|
/* bfd_vma pagemask = bfd_mach_o_get_backend_data (abfd)->page_size - 1; */
|
|
|
|
linkedit->vmsize = mdata->filelen - linkedit->fileoff;
|
|
/* linkedit->vmsize = (linkedit->vmsize + pagemask) & ~pagemask; */
|
|
linkedit->filesize = mdata->filelen - linkedit->fileoff;
|
|
|
|
linkedit->initprot = BFD_MACH_O_PROT_READ;
|
|
linkedit->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
|
|
| BFD_MACH_O_PROT_EXECUTE;
|
|
}
|
|
|
|
/* Second pass: write commands. */
|
|
for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
|
|
{
|
|
struct mach_o_load_command_external raw;
|
|
unsigned long typeflag;
|
|
|
|
typeflag = cmd->type | (cmd->type_required ? BFD_MACH_O_LC_REQ_DYLD : 0);
|
|
|
|
bfd_h_put_32 (abfd, typeflag, raw.cmd);
|
|
bfd_h_put_32 (abfd, cmd->len, raw.cmdsize);
|
|
|
|
if (bfd_seek (abfd, cmd->offset, SEEK_SET) != 0
|
|
|| bfd_bwrite (&raw, BFD_MACH_O_LC_SIZE, abfd) != 8)
|
|
return FALSE;
|
|
|
|
switch (cmd->type)
|
|
{
|
|
case BFD_MACH_O_LC_SEGMENT:
|
|
if (!bfd_mach_o_write_segment_32 (abfd, cmd))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_SEGMENT_64:
|
|
if (!bfd_mach_o_write_segment_64 (abfd, cmd))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_SYMTAB:
|
|
if (!bfd_mach_o_write_symtab (abfd, cmd))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_DYSYMTAB:
|
|
if (!bfd_mach_o_write_dysymtab (abfd, cmd))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_THREAD:
|
|
case BFD_MACH_O_LC_UNIXTHREAD:
|
|
if (!bfd_mach_o_write_thread (abfd, cmd))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_LOAD_DYLIB:
|
|
if (!bfd_mach_o_write_dylib (abfd, cmd))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_LOAD_DYLINKER:
|
|
if (!bfd_mach_o_write_dylinker (abfd, cmd))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_MAIN:
|
|
if (!bfd_mach_o_write_main (abfd, cmd))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_DYLD_INFO:
|
|
if (!bfd_mach_o_write_dyld_info (abfd, cmd))
|
|
return FALSE;
|
|
break;
|
|
default:
|
|
_bfd_error_handler
|
|
(_("unable to write unknown load command 0x%lx"),
|
|
(unsigned long) cmd->type);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
bfd_mach_o_append_section_to_segment (bfd_mach_o_segment_command *seg,
|
|
bfd_mach_o_section *s)
|
|
{
|
|
if (seg->sect_head == NULL)
|
|
seg->sect_head = s;
|
|
else
|
|
seg->sect_tail->next = s;
|
|
seg->sect_tail = s;
|
|
}
|
|
|
|
/* Create section Mach-O flags from BFD flags. */
|
|
|
|
static void
|
|
bfd_mach_o_set_section_flags_from_bfd (bfd *abfd ATTRIBUTE_UNUSED,
|
|
asection *sec)
|
|
{
|
|
flagword bfd_flags;
|
|
bfd_mach_o_section *s = bfd_mach_o_get_mach_o_section (sec);
|
|
|
|
/* Create default flags. */
|
|
bfd_flags = bfd_get_section_flags (abfd, sec);
|
|
if ((bfd_flags & SEC_CODE) == SEC_CODE)
|
|
s->flags = BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS
|
|
| BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS
|
|
| BFD_MACH_O_S_REGULAR;
|
|
else if ((bfd_flags & (SEC_ALLOC | SEC_LOAD)) == SEC_ALLOC)
|
|
s->flags = BFD_MACH_O_S_ZEROFILL;
|
|
else if (bfd_flags & SEC_DEBUGGING)
|
|
s->flags = BFD_MACH_O_S_REGULAR | BFD_MACH_O_S_ATTR_DEBUG;
|
|
else
|
|
s->flags = BFD_MACH_O_S_REGULAR;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_build_obj_seg_command (bfd *abfd, bfd_mach_o_segment_command *seg)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
unsigned int i, j;
|
|
|
|
seg->vmaddr = 0;
|
|
seg->fileoff = mdata->filelen;
|
|
seg->initprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
|
|
| BFD_MACH_O_PROT_EXECUTE;
|
|
seg->maxprot = seg->initprot;
|
|
|
|
/* Append sections to the segment.
|
|
|
|
This is a little tedious, we have to honor the need to account zerofill
|
|
sections after all the rest. This forces us to do the calculation of
|
|
total vmsize in three passes so that any alignment increments are
|
|
properly accounted. */
|
|
for (i = 0; i < mdata->nsects; ++i)
|
|
{
|
|
bfd_mach_o_section *s = mdata->sections[i];
|
|
asection *sec = s->bfdsection;
|
|
|
|
/* Although we account for zerofill section sizes in vm order, they are
|
|
placed in the file in source sequence. */
|
|
bfd_mach_o_append_section_to_segment (seg, s);
|
|
s->offset = 0;
|
|
|
|
/* Zerofill sections have zero file size & offset, the only content
|
|
written to the file is the symbols. */
|
|
if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) == BFD_MACH_O_S_ZEROFILL
|
|
|| ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK)
|
|
== BFD_MACH_O_S_GB_ZEROFILL))
|
|
continue;
|
|
|
|
/* The Darwin system tools (in MH_OBJECT files, at least) always account
|
|
sections, even those with zero size. */
|
|
if (s->size > 0)
|
|
{
|
|
seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
|
|
seg->vmsize += s->size;
|
|
|
|
/* MH_OBJECT files have unaligned content. */
|
|
if (1)
|
|
{
|
|
seg->filesize = FILE_ALIGN (seg->filesize, s->align);
|
|
mdata->filelen = FILE_ALIGN (mdata->filelen, s->align);
|
|
}
|
|
seg->filesize += s->size;
|
|
|
|
/* The system tools write even zero-sized sections with an offset
|
|
field set to the current file position. */
|
|
s->offset = mdata->filelen;
|
|
}
|
|
|
|
sec->filepos = s->offset;
|
|
mdata->filelen += s->size;
|
|
}
|
|
|
|
/* Now pass through again, for zerofill, only now we just update the
|
|
vmsize, and then for zerofill_GB. */
|
|
for (j = 0; j < 2; j++)
|
|
{
|
|
unsigned int stype;
|
|
|
|
if (j == 0)
|
|
stype = BFD_MACH_O_S_ZEROFILL;
|
|
else
|
|
stype = BFD_MACH_O_S_GB_ZEROFILL;
|
|
|
|
for (i = 0; i < mdata->nsects; ++i)
|
|
{
|
|
bfd_mach_o_section *s = mdata->sections[i];
|
|
|
|
if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) != stype)
|
|
continue;
|
|
|
|
if (s->size > 0)
|
|
{
|
|
seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
|
|
seg->vmsize += s->size;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Allocate space for the relocations. */
|
|
mdata->filelen = FILE_ALIGN (mdata->filelen, 2);
|
|
|
|
for (i = 0; i < mdata->nsects; ++i)
|
|
{
|
|
bfd_mach_o_section *ms = mdata->sections[i];
|
|
asection *sec = ms->bfdsection;
|
|
|
|
ms->nreloc = sec->reloc_count;
|
|
if (ms->nreloc == 0)
|
|
{
|
|
/* Clear nreloc and reloff if there is no relocs. */
|
|
ms->reloff = 0;
|
|
continue;
|
|
}
|
|
sec->rel_filepos = mdata->filelen;
|
|
ms->reloff = sec->rel_filepos;
|
|
mdata->filelen += sec->reloc_count * BFD_MACH_O_RELENT_SIZE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_build_exec_seg_command (bfd *abfd, bfd_mach_o_segment_command *seg)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
unsigned int i;
|
|
bfd_vma pagemask = bfd_mach_o_get_backend_data (abfd)->page_size - 1;
|
|
bfd_vma vma;
|
|
bfd_mach_o_section *s;
|
|
|
|
seg->vmsize = 0;
|
|
|
|
seg->fileoff = mdata->filelen;
|
|
seg->maxprot = 0;
|
|
seg->initprot = 0;
|
|
seg->flags = 0;
|
|
|
|
/* Append sections to the segment. We assume they are properly ordered
|
|
by vma (but we check that). */
|
|
vma = 0;
|
|
for (i = 0; i < mdata->nsects; ++i)
|
|
{
|
|
s = mdata->sections[i];
|
|
|
|
/* Consider only sections for this segment. */
|
|
if (strcmp (seg->segname, s->segname) != 0)
|
|
continue;
|
|
|
|
bfd_mach_o_append_section_to_segment (seg, s);
|
|
|
|
if (s->addr < vma)
|
|
{
|
|
_bfd_error_handler
|
|
/* xgettext:c-format */
|
|
(_("section address (%lx) below start of segment (%lx)"),
|
|
(unsigned long) s->addr, (unsigned long) vma);
|
|
return FALSE;
|
|
}
|
|
|
|
vma = s->addr + s->size;
|
|
}
|
|
|
|
/* Set segment file offset: make it page aligned. */
|
|
vma = seg->sect_head->addr;
|
|
seg->vmaddr = vma & ~pagemask;
|
|
if ((mdata->filelen & pagemask) > (vma & pagemask))
|
|
mdata->filelen += pagemask + 1;
|
|
seg->fileoff = mdata->filelen & ~pagemask;
|
|
mdata->filelen = seg->fileoff + (vma & pagemask);
|
|
|
|
/* Set section file offset. */
|
|
for (s = seg->sect_head; s != NULL; s = s->next)
|
|
{
|
|
asection *sec = s->bfdsection;
|
|
flagword flags = bfd_get_section_flags (abfd, sec);
|
|
|
|
/* Adjust segment size. */
|
|
seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
|
|
seg->vmsize += s->size;
|
|
|
|
/* File offset and length. */
|
|
seg->filesize = FILE_ALIGN (seg->filesize, s->align);
|
|
|
|
if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) != BFD_MACH_O_S_ZEROFILL
|
|
&& ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK)
|
|
!= BFD_MACH_O_S_GB_ZEROFILL))
|
|
{
|
|
mdata->filelen = FILE_ALIGN (mdata->filelen, s->align);
|
|
|
|
s->offset = mdata->filelen;
|
|
s->bfdsection->filepos = s->offset;
|
|
|
|
seg->filesize += s->size;
|
|
mdata->filelen += s->size;
|
|
}
|
|
else
|
|
{
|
|
s->offset = 0;
|
|
s->bfdsection->filepos = 0;
|
|
}
|
|
|
|
/* Set protection. */
|
|
if (flags & SEC_LOAD)
|
|
{
|
|
if (flags & SEC_CODE)
|
|
seg->initprot |= BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_EXECUTE;
|
|
if ((flags & (SEC_DATA | SEC_READONLY)) == SEC_DATA)
|
|
seg->initprot |= BFD_MACH_O_PROT_WRITE | BFD_MACH_O_PROT_READ;
|
|
}
|
|
|
|
/* Relocs shouldn't appear in non-object files. */
|
|
if (s->bfdsection->reloc_count != 0)
|
|
return FALSE;
|
|
}
|
|
|
|
/* Set maxprot. */
|
|
if (seg->initprot != 0)
|
|
seg->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
|
|
| BFD_MACH_O_PROT_EXECUTE;
|
|
else
|
|
seg->maxprot = 0;
|
|
|
|
/* Round segment size (and file size). */
|
|
seg->vmsize = (seg->vmsize + pagemask) & ~pagemask;
|
|
seg->filesize = (seg->filesize + pagemask) & ~pagemask;
|
|
mdata->filelen = (mdata->filelen + pagemask) & ~pagemask;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Layout the commands: set commands size and offset, set ncmds and sizeofcmds
|
|
fields in header. */
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_layout_commands (bfd_mach_o_data_struct *mdata)
|
|
{
|
|
unsigned wide = mach_o_wide_p (&mdata->header);
|
|
unsigned int hdrlen;
|
|
ufile_ptr offset;
|
|
bfd_mach_o_load_command *cmd;
|
|
unsigned int align;
|
|
bfd_boolean ret = TRUE;
|
|
|
|
hdrlen = wide ? BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
|
|
align = wide ? 8 - 1 : 4 - 1;
|
|
offset = hdrlen;
|
|
mdata->header.ncmds = 0;
|
|
|
|
for (cmd = mdata->first_command; cmd; cmd = cmd->next)
|
|
{
|
|
mdata->header.ncmds++;
|
|
cmd->offset = offset;
|
|
|
|
switch (cmd->type)
|
|
{
|
|
case BFD_MACH_O_LC_SEGMENT_64:
|
|
cmd->len = BFD_MACH_O_LC_SEGMENT_64_SIZE
|
|
+ BFD_MACH_O_SECTION_64_SIZE * cmd->command.segment.nsects;
|
|
break;
|
|
case BFD_MACH_O_LC_SEGMENT:
|
|
cmd->len = BFD_MACH_O_LC_SEGMENT_SIZE
|
|
+ BFD_MACH_O_SECTION_SIZE * cmd->command.segment.nsects;
|
|
break;
|
|
case BFD_MACH_O_LC_SYMTAB:
|
|
cmd->len = sizeof (struct mach_o_symtab_command_external)
|
|
+ BFD_MACH_O_LC_SIZE;
|
|
break;
|
|
case BFD_MACH_O_LC_DYSYMTAB:
|
|
cmd->len = sizeof (struct mach_o_dysymtab_command_external)
|
|
+ BFD_MACH_O_LC_SIZE;
|
|
break;
|
|
case BFD_MACH_O_LC_LOAD_DYLIB:
|
|
cmd->len = sizeof (struct mach_o_dylib_command_external)
|
|
+ BFD_MACH_O_LC_SIZE;
|
|
cmd->command.dylib.name_offset = cmd->len;
|
|
cmd->len += strlen (cmd->command.dylib.name_str);
|
|
cmd->len = (cmd->len + align) & ~align;
|
|
break;
|
|
case BFD_MACH_O_LC_LOAD_DYLINKER:
|
|
cmd->len = sizeof (struct mach_o_str_command_external)
|
|
+ BFD_MACH_O_LC_SIZE;
|
|
cmd->command.dylinker.name_offset = cmd->len;
|
|
cmd->len += strlen (cmd->command.dylinker.name_str);
|
|
cmd->len = (cmd->len + align) & ~align;
|
|
break;
|
|
case BFD_MACH_O_LC_MAIN:
|
|
cmd->len = sizeof (struct mach_o_entry_point_command_external)
|
|
+ BFD_MACH_O_LC_SIZE;
|
|
break;
|
|
case BFD_MACH_O_LC_DYLD_INFO:
|
|
cmd->len = sizeof (struct mach_o_dyld_info_command_external)
|
|
+ BFD_MACH_O_LC_SIZE;
|
|
break;
|
|
default:
|
|
_bfd_error_handler
|
|
(_("unable to layout unknown load command 0x%lx"),
|
|
(unsigned long) cmd->type);
|
|
ret = FALSE;
|
|
break;
|
|
}
|
|
|
|
BFD_ASSERT (cmd->len % (align + 1) == 0);
|
|
offset += cmd->len;
|
|
}
|
|
mdata->header.sizeofcmds = offset - hdrlen;
|
|
mdata->filelen = offset;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Subroutine of bfd_mach_o_build_commands: set type, name and nsects of a
|
|
segment. */
|
|
|
|
static void
|
|
bfd_mach_o_init_segment (bfd_mach_o_data_struct *mdata,
|
|
bfd_mach_o_load_command *cmd,
|
|
const char *segname, unsigned int nbr_sect)
|
|
{
|
|
bfd_mach_o_segment_command *seg = &cmd->command.segment;
|
|
unsigned wide = mach_o_wide_p (&mdata->header);
|
|
|
|
/* Init segment command. */
|
|
cmd->type = wide ? BFD_MACH_O_LC_SEGMENT_64 : BFD_MACH_O_LC_SEGMENT;
|
|
cmd->type_required = FALSE;
|
|
|
|
strcpy (seg->segname, segname);
|
|
seg->nsects = nbr_sect;
|
|
|
|
seg->vmaddr = 0;
|
|
seg->vmsize = 0;
|
|
|
|
seg->fileoff = 0;
|
|
seg->filesize = 0;
|
|
seg->maxprot = 0;
|
|
seg->initprot = 0;
|
|
seg->flags = 0;
|
|
seg->sect_head = NULL;
|
|
seg->sect_tail = NULL;
|
|
}
|
|
|
|
/* Build Mach-O load commands (currently assuming an MH_OBJECT file).
|
|
TODO: Other file formats, rebuilding symtab/dysymtab commands for strip
|
|
and copy functionality. */
|
|
|
|
bfd_boolean
|
|
bfd_mach_o_build_commands (bfd *abfd)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
unsigned wide = mach_o_wide_p (&mdata->header);
|
|
unsigned int nbr_segcmd = 0;
|
|
bfd_mach_o_load_command *commands;
|
|
unsigned int nbr_commands;
|
|
int symtab_idx = -1;
|
|
int dysymtab_idx = -1;
|
|
int main_idx = -1;
|
|
unsigned int i;
|
|
|
|
/* Return now if already built. */
|
|
if (mdata->header.ncmds != 0)
|
|
return TRUE;
|
|
|
|
/* Fill in the file type, if not already set. */
|
|
if (mdata->header.filetype == 0)
|
|
{
|
|
if (abfd->flags & EXEC_P)
|
|
mdata->header.filetype = BFD_MACH_O_MH_EXECUTE;
|
|
else if (abfd->flags & DYNAMIC)
|
|
mdata->header.filetype = BFD_MACH_O_MH_DYLIB;
|
|
else
|
|
mdata->header.filetype = BFD_MACH_O_MH_OBJECT;
|
|
}
|
|
|
|
/* If hasn't already been done, flatten sections list, and sort
|
|
if/when required. Must be done before the symbol table is adjusted,
|
|
since that depends on properly numbered sections. */
|
|
if (mdata->nsects == 0 || mdata->sections == NULL)
|
|
if (! bfd_mach_o_mangle_sections (abfd, mdata))
|
|
return FALSE;
|
|
|
|
/* Order the symbol table, fill-in/check mach-o specific fields and
|
|
partition out any indirect symbols. */
|
|
if (!bfd_mach_o_mangle_symbols (abfd))
|
|
return FALSE;
|
|
|
|
/* Segment commands. */
|
|
if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT)
|
|
{
|
|
/* Only one segment for all the sections. But the segment is
|
|
optional if there is no sections. */
|
|
nbr_segcmd = (mdata->nsects > 0) ? 1 : 0;
|
|
}
|
|
else
|
|
{
|
|
bfd_mach_o_section *prev_sect = NULL;
|
|
|
|
/* One pagezero segment and one linkedit segment. */
|
|
nbr_segcmd = 2;
|
|
|
|
/* Create one segment for associated segment name in sections.
|
|
Assume that sections with the same segment name are consecutive. */
|
|
for (i = 0; i < mdata->nsects; i++)
|
|
{
|
|
bfd_mach_o_section *this_sect = mdata->sections[i];
|
|
|
|
if (prev_sect == NULL
|
|
|| strcmp (prev_sect->segname, this_sect->segname) != 0)
|
|
{
|
|
nbr_segcmd++;
|
|
prev_sect = this_sect;
|
|
}
|
|
}
|
|
}
|
|
|
|
nbr_commands = nbr_segcmd;
|
|
|
|
/* One command for the symbol table (only if there are symbols. */
|
|
if (bfd_get_symcount (abfd) > 0)
|
|
symtab_idx = nbr_commands++;
|
|
|
|
/* FIXME:
|
|
This is a rather crude test for whether we should build a dysymtab. */
|
|
if (bfd_mach_o_should_emit_dysymtab ()
|
|
&& bfd_get_symcount (abfd))
|
|
{
|
|
/* If there should be a case where a dysymtab could be emitted without
|
|
a symtab (seems improbable), this would need amending. */
|
|
dysymtab_idx = nbr_commands++;
|
|
}
|
|
|
|
/* Add an entry point command. */
|
|
if (mdata->header.filetype == BFD_MACH_O_MH_EXECUTE
|
|
&& bfd_get_start_address (abfd) != 0)
|
|
main_idx = nbr_commands++;
|
|
|
|
/* Well, we must have a header, at least. */
|
|
mdata->filelen = wide ? BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
|
|
|
|
/* A bit unusual, but no content is valid;
|
|
as -n empty.s -o empty.o */
|
|
if (nbr_commands == 0)
|
|
{
|
|
/* Layout commands (well none...) and set headers command fields. */
|
|
return bfd_mach_o_layout_commands (mdata);
|
|
}
|
|
|
|
/* Create commands for segments (and symtabs), prepend them. */
|
|
commands = bfd_zalloc (abfd, nbr_commands * sizeof (bfd_mach_o_load_command));
|
|
if (commands == NULL)
|
|
return FALSE;
|
|
for (i = 0; i < nbr_commands - 1; i++)
|
|
commands[i].next = &commands[i + 1];
|
|
commands[nbr_commands - 1].next = mdata->first_command;
|
|
if (mdata->first_command == NULL)
|
|
mdata->last_command = &commands[nbr_commands - 1];
|
|
mdata->first_command = &commands[0];
|
|
|
|
if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT && nbr_segcmd != 0)
|
|
{
|
|
/* For object file, there is only one segment. */
|
|
bfd_mach_o_init_segment (mdata, &commands[0], "", mdata->nsects);
|
|
}
|
|
else if (nbr_segcmd != 0)
|
|
{
|
|
bfd_mach_o_load_command *cmd;
|
|
|
|
BFD_ASSERT (nbr_segcmd >= 2);
|
|
|
|
/* The pagezero. */
|
|
cmd = &commands[0];
|
|
bfd_mach_o_init_segment (mdata, cmd, "__PAGEZERO", 0);
|
|
|
|
/* Segments from sections. */
|
|
cmd++;
|
|
for (i = 0; i < mdata->nsects;)
|
|
{
|
|
const char *segname = mdata->sections[i]->segname;
|
|
unsigned int nbr_sect = 1;
|
|
|
|
/* Count number of sections for this segment. */
|
|
for (i++; i < mdata->nsects; i++)
|
|
if (strcmp (mdata->sections[i]->segname, segname) == 0)
|
|
nbr_sect++;
|
|
else
|
|
break;
|
|
|
|
bfd_mach_o_init_segment (mdata, cmd, segname, nbr_sect);
|
|
cmd++;
|
|
}
|
|
|
|
/* The linkedit. */
|
|
bfd_mach_o_init_segment (mdata, cmd, "__LINKEDIT", 0);
|
|
}
|
|
|
|
if (symtab_idx >= 0)
|
|
{
|
|
/* Init symtab command. */
|
|
bfd_mach_o_load_command *cmd = &commands[symtab_idx];
|
|
|
|
cmd->type = BFD_MACH_O_LC_SYMTAB;
|
|
cmd->type_required = FALSE;
|
|
}
|
|
|
|
/* If required, setup symtab command, see comment above about the quality
|
|
of this test. */
|
|
if (dysymtab_idx >= 0)
|
|
{
|
|
bfd_mach_o_load_command *cmd = &commands[dysymtab_idx];
|
|
|
|
cmd->type = BFD_MACH_O_LC_DYSYMTAB;
|
|
cmd->type_required = FALSE;
|
|
}
|
|
|
|
/* Create the main command. */
|
|
if (main_idx >= 0)
|
|
{
|
|
bfd_mach_o_load_command *cmd = &commands[main_idx];
|
|
|
|
cmd->type = BFD_MACH_O_LC_MAIN;
|
|
cmd->type_required = TRUE;
|
|
|
|
cmd->command.main.entryoff = 0;
|
|
cmd->command.main.stacksize = 0;
|
|
}
|
|
|
|
/* Layout commands. */
|
|
if (! bfd_mach_o_layout_commands (mdata))
|
|
return FALSE;
|
|
|
|
/* So, now we have sized the commands and the filelen set to that.
|
|
Now we can build the segment command and set the section file offsets. */
|
|
if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT)
|
|
{
|
|
for (i = 0; i < nbr_segcmd; i++)
|
|
if (!bfd_mach_o_build_obj_seg_command
|
|
(abfd, &commands[i].command.segment))
|
|
return FALSE;
|
|
}
|
|
else
|
|
{
|
|
bfd_vma maxvma = 0;
|
|
|
|
/* Skip pagezero and linkedit segments. */
|
|
for (i = 1; i < nbr_segcmd - 1; i++)
|
|
{
|
|
bfd_mach_o_segment_command *seg = &commands[i].command.segment;
|
|
|
|
if (!bfd_mach_o_build_exec_seg_command (abfd, seg))
|
|
return FALSE;
|
|
|
|
if (seg->vmaddr + seg->vmsize > maxvma)
|
|
maxvma = seg->vmaddr + seg->vmsize;
|
|
}
|
|
|
|
/* Set the size of __PAGEZERO. */
|
|
commands[0].command.segment.vmsize =
|
|
commands[1].command.segment.vmaddr;
|
|
|
|
/* Set the vma and fileoff of __LINKEDIT. */
|
|
commands[nbr_segcmd - 1].command.segment.vmaddr = maxvma;
|
|
commands[nbr_segcmd - 1].command.segment.fileoff = mdata->filelen;
|
|
|
|
/* Set entry point (once segments have been laid out). */
|
|
if (main_idx >= 0)
|
|
commands[main_idx].command.main.entryoff =
|
|
bfd_get_start_address (abfd) - commands[1].command.segment.vmaddr;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Set the contents of a section. */
|
|
|
|
bfd_boolean
|
|
bfd_mach_o_set_section_contents (bfd *abfd,
|
|
asection *section,
|
|
const void * location,
|
|
file_ptr offset,
|
|
bfd_size_type count)
|
|
{
|
|
file_ptr pos;
|
|
|
|
/* Trying to write the first section contents will trigger the creation of
|
|
the load commands if they are not already present. */
|
|
if (!abfd->output_has_begun && !bfd_mach_o_build_commands (abfd))
|
|
return FALSE;
|
|
|
|
if (count == 0)
|
|
return TRUE;
|
|
|
|
pos = section->filepos + offset;
|
|
if (bfd_seek (abfd, pos, SEEK_SET) != 0
|
|
|| bfd_bwrite (location, count, abfd) != count)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
int
|
|
bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED,
|
|
struct bfd_link_info *info 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. */
|
|
|
|
asymbol *
|
|
bfd_mach_o_make_empty_symbol (bfd *abfd)
|
|
{
|
|
asymbol *new_symbol;
|
|
|
|
new_symbol = bfd_zalloc (abfd, sizeof (bfd_mach_o_asymbol));
|
|
if (new_symbol == NULL)
|
|
return new_symbol;
|
|
new_symbol->the_bfd = abfd;
|
|
new_symbol->udata.i = SYM_MACHO_FIELDS_UNSET;
|
|
return new_symbol;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_header (bfd *abfd, file_ptr hdr_off, bfd_mach_o_header *header)
|
|
{
|
|
struct mach_o_header_external raw;
|
|
unsigned int size;
|
|
bfd_vma (*get32) (const void *) = NULL;
|
|
|
|
/* Just read the magic number. */
|
|
if (bfd_seek (abfd, hdr_off, SEEK_SET) != 0
|
|
|| bfd_bread (raw.magic, sizeof (raw.magic), abfd) != 4)
|
|
return FALSE;
|
|
|
|
if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
|
|
{
|
|
header->byteorder = BFD_ENDIAN_BIG;
|
|
header->magic = BFD_MACH_O_MH_MAGIC;
|
|
header->version = 1;
|
|
get32 = bfd_getb32;
|
|
}
|
|
else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
|
|
{
|
|
header->byteorder = BFD_ENDIAN_LITTLE;
|
|
header->magic = BFD_MACH_O_MH_MAGIC;
|
|
header->version = 1;
|
|
get32 = bfd_getl32;
|
|
}
|
|
else if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
|
|
{
|
|
header->byteorder = BFD_ENDIAN_BIG;
|
|
header->magic = BFD_MACH_O_MH_MAGIC_64;
|
|
header->version = 2;
|
|
get32 = bfd_getb32;
|
|
}
|
|
else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
|
|
{
|
|
header->byteorder = BFD_ENDIAN_LITTLE;
|
|
header->magic = BFD_MACH_O_MH_MAGIC_64;
|
|
header->version = 2;
|
|
get32 = bfd_getl32;
|
|
}
|
|
else
|
|
{
|
|
header->byteorder = BFD_ENDIAN_UNKNOWN;
|
|
return FALSE;
|
|
}
|
|
|
|
/* Once the size of the header is known, read the full header. */
|
|
size = mach_o_wide_p (header) ?
|
|
BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
|
|
|
|
if (bfd_seek (abfd, hdr_off, SEEK_SET) != 0
|
|
|| bfd_bread (&raw, size, abfd) != size)
|
|
return FALSE;
|
|
|
|
header->cputype = (*get32) (raw.cputype);
|
|
header->cpusubtype = (*get32) (raw.cpusubtype);
|
|
header->filetype = (*get32) (raw.filetype);
|
|
header->ncmds = (*get32) (raw.ncmds);
|
|
header->sizeofcmds = (*get32) (raw.sizeofcmds);
|
|
header->flags = (*get32) (raw.flags);
|
|
|
|
if (mach_o_wide_p (header))
|
|
header->reserved = (*get32) (raw.reserved);
|
|
else
|
|
header->reserved = 0;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
bfd_boolean
|
|
bfd_mach_o_new_section_hook (bfd *abfd, asection *sec)
|
|
{
|
|
bfd_mach_o_section *s;
|
|
unsigned bfdalign = bfd_get_section_alignment (abfd, sec);
|
|
|
|
s = bfd_mach_o_get_mach_o_section (sec);
|
|
if (s == NULL)
|
|
{
|
|
flagword bfd_flags;
|
|
static const mach_o_section_name_xlat * xlat;
|
|
|
|
s = (bfd_mach_o_section *) bfd_zalloc (abfd, sizeof (*s));
|
|
if (s == NULL)
|
|
return FALSE;
|
|
sec->used_by_bfd = s;
|
|
s->bfdsection = sec;
|
|
|
|
/* Create the Darwin seg/sect name pair from the bfd name.
|
|
If this is a canonical name for which a specific paiting exists
|
|
there will also be defined flags, type, attribute and alignment
|
|
values. */
|
|
xlat = bfd_mach_o_convert_section_name_to_mach_o (abfd, sec, s);
|
|
if (xlat != NULL)
|
|
{
|
|
s->flags = xlat->macho_sectype | xlat->macho_secattr;
|
|
s->align = xlat->sectalign > bfdalign ? xlat->sectalign
|
|
: bfdalign;
|
|
(void) bfd_set_section_alignment (abfd, sec, s->align);
|
|
bfd_flags = bfd_get_section_flags (abfd, sec);
|
|
if (bfd_flags == SEC_NO_FLAGS)
|
|
bfd_set_section_flags (abfd, sec, xlat->bfd_flags);
|
|
}
|
|
else
|
|
/* Create default flags. */
|
|
bfd_mach_o_set_section_flags_from_bfd (abfd, sec);
|
|
}
|
|
|
|
return _bfd_generic_new_section_hook (abfd, sec);
|
|
}
|
|
|
|
static void
|
|
bfd_mach_o_init_section_from_mach_o (bfd *abfd, asection *sec,
|
|
unsigned long prot)
|
|
{
|
|
flagword flags;
|
|
bfd_mach_o_section *section;
|
|
|
|
flags = bfd_get_section_flags (abfd, sec);
|
|
section = bfd_mach_o_get_mach_o_section (sec);
|
|
|
|
/* TODO: see if we should use the xlat system for doing this by
|
|
preference and fall back to this for unknown sections. */
|
|
|
|
if (flags == SEC_NO_FLAGS)
|
|
{
|
|
/* Try to guess flags. */
|
|
if (section->flags & BFD_MACH_O_S_ATTR_DEBUG)
|
|
flags = SEC_DEBUGGING;
|
|
else
|
|
{
|
|
flags = SEC_ALLOC;
|
|
if ((section->flags & BFD_MACH_O_SECTION_TYPE_MASK)
|
|
!= BFD_MACH_O_S_ZEROFILL)
|
|
{
|
|
flags |= SEC_LOAD;
|
|
if (prot & BFD_MACH_O_PROT_EXECUTE)
|
|
flags |= SEC_CODE;
|
|
if (prot & BFD_MACH_O_PROT_WRITE)
|
|
flags |= SEC_DATA;
|
|
else if (prot & BFD_MACH_O_PROT_READ)
|
|
flags |= SEC_READONLY;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if ((flags & SEC_DEBUGGING) == 0)
|
|
flags |= SEC_ALLOC;
|
|
}
|
|
|
|
if (section->offset != 0)
|
|
flags |= SEC_HAS_CONTENTS;
|
|
if (section->nreloc != 0)
|
|
flags |= SEC_RELOC;
|
|
|
|
bfd_set_section_flags (abfd, sec, flags);
|
|
|
|
sec->vma = section->addr;
|
|
sec->lma = section->addr;
|
|
sec->size = section->size;
|
|
sec->filepos = section->offset;
|
|
sec->alignment_power = section->align;
|
|
sec->segment_mark = 0;
|
|
sec->reloc_count = section->nreloc;
|
|
sec->rel_filepos = section->reloff;
|
|
}
|
|
|
|
static asection *
|
|
bfd_mach_o_make_bfd_section (bfd *abfd,
|
|
const unsigned char *segname,
|
|
const unsigned char *sectname)
|
|
{
|
|
const char *sname;
|
|
flagword flags;
|
|
|
|
bfd_mach_o_convert_section_name_to_bfd
|
|
(abfd, (const char *)segname, (const char *)sectname, &sname, &flags);
|
|
if (sname == NULL)
|
|
return NULL;
|
|
|
|
return bfd_make_section_anyway_with_flags (abfd, sname, flags);
|
|
}
|
|
|
|
static asection *
|
|
bfd_mach_o_read_section_32 (bfd *abfd, unsigned long prot)
|
|
{
|
|
struct mach_o_section_32_external raw;
|
|
asection *sec;
|
|
bfd_mach_o_section *section;
|
|
|
|
if (bfd_bread (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
|
|
!= BFD_MACH_O_SECTION_SIZE)
|
|
return NULL;
|
|
|
|
sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
|
|
if (sec == NULL)
|
|
return NULL;
|
|
|
|
section = bfd_mach_o_get_mach_o_section (sec);
|
|
memcpy (section->segname, raw.segname, sizeof (raw.segname));
|
|
section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
|
|
memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
|
|
section->sectname[BFD_MACH_O_SECTNAME_SIZE] = 0;
|
|
section->addr = bfd_h_get_32 (abfd, raw.addr);
|
|
section->size = bfd_h_get_32 (abfd, raw.size);
|
|
section->offset = bfd_h_get_32 (abfd, raw.offset);
|
|
section->align = bfd_h_get_32 (abfd, raw.align);
|
|
/* PR 17512: file: 0017eb76. */
|
|
if (section->align > 64)
|
|
{
|
|
_bfd_error_handler
|
|
(_("bfd_mach_o_read_section_32: overlarge alignment value: 0x%x, "
|
|
"using 32 instead"), section->align);
|
|
section->align = 32;
|
|
}
|
|
section->reloff = bfd_h_get_32 (abfd, raw.reloff);
|
|
section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
|
|
section->flags = bfd_h_get_32 (abfd, raw.flags);
|
|
section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
|
|
section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
|
|
section->reserved3 = 0;
|
|
|
|
bfd_mach_o_init_section_from_mach_o (abfd, sec, prot);
|
|
|
|
return sec;
|
|
}
|
|
|
|
static asection *
|
|
bfd_mach_o_read_section_64 (bfd *abfd, unsigned long prot)
|
|
{
|
|
struct mach_o_section_64_external raw;
|
|
asection *sec;
|
|
bfd_mach_o_section *section;
|
|
|
|
if (bfd_bread (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
|
|
!= BFD_MACH_O_SECTION_64_SIZE)
|
|
return NULL;
|
|
|
|
sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
|
|
if (sec == NULL)
|
|
return NULL;
|
|
|
|
section = bfd_mach_o_get_mach_o_section (sec);
|
|
memcpy (section->segname, raw.segname, sizeof (raw.segname));
|
|
section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
|
|
memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
|
|
section->sectname[BFD_MACH_O_SECTNAME_SIZE] = 0;
|
|
section->addr = bfd_h_get_64 (abfd, raw.addr);
|
|
section->size = bfd_h_get_64 (abfd, raw.size);
|
|
section->offset = bfd_h_get_32 (abfd, raw.offset);
|
|
section->align = bfd_h_get_32 (abfd, raw.align);
|
|
if (section->align > 64)
|
|
{
|
|
_bfd_error_handler
|
|
(_("bfd_mach_o_read_section_64: overlarge alignment value: 0x%x, "
|
|
"using 32 instead"), section->align);
|
|
section->align = 32;
|
|
}
|
|
section->reloff = bfd_h_get_32 (abfd, raw.reloff);
|
|
section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
|
|
section->flags = bfd_h_get_32 (abfd, raw.flags);
|
|
section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
|
|
section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
|
|
section->reserved3 = bfd_h_get_32 (abfd, raw.reserved3);
|
|
|
|
bfd_mach_o_init_section_from_mach_o (abfd, sec, prot);
|
|
|
|
return sec;
|
|
}
|
|
|
|
static asection *
|
|
bfd_mach_o_read_section (bfd *abfd, unsigned long prot, unsigned int wide)
|
|
{
|
|
if (wide)
|
|
return bfd_mach_o_read_section_64 (abfd, prot);
|
|
else
|
|
return bfd_mach_o_read_section_32 (abfd, prot);
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_symtab_symbol (bfd *abfd,
|
|
bfd_mach_o_symtab_command *sym,
|
|
bfd_mach_o_asymbol *s,
|
|
unsigned long i)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
unsigned int wide = mach_o_wide_p (&mdata->header);
|
|
unsigned int symwidth =
|
|
wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
|
|
unsigned int symoff = sym->symoff + (i * symwidth);
|
|
struct mach_o_nlist_64_external raw;
|
|
unsigned char type = -1;
|
|
unsigned char section = -1;
|
|
short desc = -1;
|
|
symvalue value = -1;
|
|
unsigned long stroff = -1;
|
|
unsigned int symtype = -1;
|
|
|
|
BFD_ASSERT (sym->strtab != NULL);
|
|
|
|
if (bfd_seek (abfd, symoff, SEEK_SET) != 0
|
|
|| bfd_bread (&raw, symwidth, abfd) != symwidth)
|
|
{
|
|
_bfd_error_handler
|
|
/* xgettext:c-format */
|
|
(_("bfd_mach_o_read_symtab_symbol: unable to read %d bytes at %lu"),
|
|
symwidth, (unsigned long) symoff);
|
|
return FALSE;
|
|
}
|
|
|
|
stroff = bfd_h_get_32 (abfd, raw.n_strx);
|
|
type = bfd_h_get_8 (abfd, raw.n_type);
|
|
symtype = type & BFD_MACH_O_N_TYPE;
|
|
section = bfd_h_get_8 (abfd, raw.n_sect);
|
|
desc = bfd_h_get_16 (abfd, raw.n_desc);
|
|
if (wide)
|
|
value = bfd_h_get_64 (abfd, raw.n_value);
|
|
else
|
|
value = bfd_h_get_32 (abfd, raw.n_value);
|
|
|
|
if (stroff >= sym->strsize)
|
|
{
|
|
_bfd_error_handler
|
|
/* xgettext:c-format */
|
|
(_("bfd_mach_o_read_symtab_symbol: name out of range (%lu >= %lu)"),
|
|
(unsigned long) stroff,
|
|
(unsigned long) sym->strsize);
|
|
return FALSE;
|
|
}
|
|
|
|
s->symbol.the_bfd = abfd;
|
|
s->symbol.name = sym->strtab + stroff;
|
|
s->symbol.value = value;
|
|
s->symbol.flags = 0x0;
|
|
s->symbol.udata.i = i;
|
|
s->n_type = type;
|
|
s->n_sect = section;
|
|
s->n_desc = desc;
|
|
|
|
if (type & BFD_MACH_O_N_STAB)
|
|
{
|
|
s->symbol.flags |= BSF_DEBUGGING;
|
|
s->symbol.section = bfd_und_section_ptr;
|
|
switch (type)
|
|
{
|
|
case N_FUN:
|
|
case N_STSYM:
|
|
case N_LCSYM:
|
|
case N_BNSYM:
|
|
case N_SLINE:
|
|
case N_ENSYM:
|
|
case N_ECOMM:
|
|
case N_ECOML:
|
|
case N_GSYM:
|
|
if ((section > 0) && (section <= mdata->nsects))
|
|
{
|
|
s->symbol.section = mdata->sections[section - 1]->bfdsection;
|
|
s->symbol.value =
|
|
s->symbol.value - mdata->sections[section - 1]->addr;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (type & (BFD_MACH_O_N_PEXT | BFD_MACH_O_N_EXT))
|
|
s->symbol.flags |= BSF_GLOBAL;
|
|
else
|
|
s->symbol.flags |= BSF_LOCAL;
|
|
|
|
switch (symtype)
|
|
{
|
|
case BFD_MACH_O_N_UNDF:
|
|
if (type == (BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT)
|
|
&& s->symbol.value != 0)
|
|
{
|
|
/* A common symbol. */
|
|
s->symbol.section = bfd_com_section_ptr;
|
|
s->symbol.flags = BSF_NO_FLAGS;
|
|
}
|
|
else
|
|
{
|
|
s->symbol.section = bfd_und_section_ptr;
|
|
if (s->n_desc & BFD_MACH_O_N_WEAK_REF)
|
|
s->symbol.flags |= BSF_WEAK;
|
|
}
|
|
break;
|
|
case BFD_MACH_O_N_PBUD:
|
|
s->symbol.section = bfd_und_section_ptr;
|
|
break;
|
|
case BFD_MACH_O_N_ABS:
|
|
s->symbol.section = bfd_abs_section_ptr;
|
|
break;
|
|
case BFD_MACH_O_N_SECT:
|
|
if ((section > 0) && (section <= mdata->nsects))
|
|
{
|
|
s->symbol.section = mdata->sections[section - 1]->bfdsection;
|
|
s->symbol.value =
|
|
s->symbol.value - mdata->sections[section - 1]->addr;
|
|
}
|
|
else
|
|
{
|
|
/* Mach-O uses 0 to mean "no section"; not an error. */
|
|
if (section != 0)
|
|
{
|
|
_bfd_error_handler
|
|
/* xgettext:c-format */
|
|
(_("bfd_mach_o_read_symtab_symbol: "
|
|
"symbol \"%s\" specified invalid section %d (max %lu): "
|
|
"setting to undefined"),
|
|
s->symbol.name, section, mdata->nsects);
|
|
}
|
|
s->symbol.section = bfd_und_section_ptr;
|
|
}
|
|
break;
|
|
case BFD_MACH_O_N_INDR:
|
|
/* FIXME: we don't follow the BFD convention as this indirect symbol
|
|
won't be followed by the referenced one. This looks harmless
|
|
unless we start using the linker. */
|
|
s->symbol.flags |= BSF_INDIRECT;
|
|
s->symbol.section = bfd_ind_section_ptr;
|
|
s->symbol.value = 0;
|
|
break;
|
|
default:
|
|
_bfd_error_handler
|
|
/* xgettext:c-format */
|
|
(_("bfd_mach_o_read_symtab_symbol: "
|
|
"symbol \"%s\" specified invalid type field 0x%x: "
|
|
"setting to undefined"), s->symbol.name, symtype);
|
|
s->symbol.section = bfd_und_section_ptr;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
bfd_boolean
|
|
bfd_mach_o_read_symtab_strtab (bfd *abfd)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
bfd_mach_o_symtab_command *sym = mdata->symtab;
|
|
|
|
/* Fail if there is no symtab. */
|
|
if (sym == NULL)
|
|
return FALSE;
|
|
|
|
/* Success if already loaded. */
|
|
if (sym->strtab)
|
|
return TRUE;
|
|
|
|
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 FALSE;
|
|
}
|
|
sym->strtab = (char *) b->buffer + sym->stroff;
|
|
}
|
|
else
|
|
{
|
|
sym->strtab = bfd_alloc (abfd, sym->strsize + 1);
|
|
if (sym->strtab == NULL)
|
|
return FALSE;
|
|
|
|
if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0
|
|
|| bfd_bread (sym->strtab, sym->strsize, abfd) != sym->strsize)
|
|
{
|
|
/* PR 17512: file: 10888-1609-0.004. */
|
|
bfd_release (abfd, sym->strtab);
|
|
sym->strtab = NULL;
|
|
bfd_set_error (bfd_error_file_truncated);
|
|
return FALSE;
|
|
}
|
|
/* Zero terminate the string table. */
|
|
sym->strtab[sym->strsize] = 0;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
bfd_boolean
|
|
bfd_mach_o_read_symtab_symbols (bfd *abfd)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
bfd_mach_o_symtab_command *sym = mdata->symtab;
|
|
unsigned long i;
|
|
|
|
if (sym == NULL || sym->symbols)
|
|
/* Return now if there are no symbols or if already loaded. */
|
|
return TRUE;
|
|
|
|
sym->symbols = bfd_alloc2 (abfd, sym->nsyms, sizeof (bfd_mach_o_asymbol));
|
|
if (sym->symbols == NULL)
|
|
{
|
|
_bfd_error_handler (_("bfd_mach_o_read_symtab_symbols: "
|
|
"unable to allocate memory for symbols"));
|
|
sym->nsyms = 0;
|
|
return FALSE;
|
|
}
|
|
|
|
if (!bfd_mach_o_read_symtab_strtab (abfd))
|
|
goto fail;
|
|
|
|
for (i = 0; i < sym->nsyms; i++)
|
|
if (!bfd_mach_o_read_symtab_symbol (abfd, sym, &sym->symbols[i], i))
|
|
goto fail;
|
|
|
|
return TRUE;
|
|
|
|
fail:
|
|
bfd_release (abfd, sym->symbols);
|
|
sym->symbols = NULL;
|
|
sym->nsyms = 0;
|
|
return FALSE;
|
|
}
|
|
|
|
static const char *
|
|
bfd_mach_o_i386_flavour_string (unsigned int flavour)
|
|
{
|
|
switch ((int) flavour)
|
|
{
|
|
case BFD_MACH_O_x86_THREAD_STATE32: return "x86_THREAD_STATE32";
|
|
case BFD_MACH_O_x86_FLOAT_STATE32: return "x86_FLOAT_STATE32";
|
|
case BFD_MACH_O_x86_EXCEPTION_STATE32: return "x86_EXCEPTION_STATE32";
|
|
case BFD_MACH_O_x86_THREAD_STATE64: return "x86_THREAD_STATE64";
|
|
case BFD_MACH_O_x86_FLOAT_STATE64: return "x86_FLOAT_STATE64";
|
|
case BFD_MACH_O_x86_EXCEPTION_STATE64: return "x86_EXCEPTION_STATE64";
|
|
case BFD_MACH_O_x86_THREAD_STATE: return "x86_THREAD_STATE";
|
|
case BFD_MACH_O_x86_FLOAT_STATE: return "x86_FLOAT_STATE";
|
|
case BFD_MACH_O_x86_EXCEPTION_STATE: return "x86_EXCEPTION_STATE";
|
|
case BFD_MACH_O_x86_DEBUG_STATE32: return "x86_DEBUG_STATE32";
|
|
case BFD_MACH_O_x86_DEBUG_STATE64: return "x86_DEBUG_STATE64";
|
|
case BFD_MACH_O_x86_DEBUG_STATE: return "x86_DEBUG_STATE";
|
|
case BFD_MACH_O_x86_THREAD_STATE_NONE: return "x86_THREAD_STATE_NONE";
|
|
default: return "UNKNOWN";
|
|
}
|
|
}
|
|
|
|
static const char *
|
|
bfd_mach_o_ppc_flavour_string (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";
|
|
case BFD_MACH_O_PPC_THREAD_STATE64: return "PPC_THREAD_STATE64";
|
|
case BFD_MACH_O_PPC_EXCEPTION_STATE64: return "PPC_EXCEPTION_STATE64";
|
|
default: return "UNKNOWN";
|
|
}
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
|
|
struct mach_o_str_command_external raw;
|
|
unsigned int nameoff;
|
|
unsigned int namelen;
|
|
|
|
if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
nameoff = bfd_h_get_32 (abfd, raw.str);
|
|
|
|
cmd->name_offset = nameoff;
|
|
namelen = command->len - nameoff;
|
|
nameoff += command->offset;
|
|
cmd->name_str = bfd_alloc (abfd, namelen);
|
|
if (cmd->name_str == NULL)
|
|
return FALSE;
|
|
if (bfd_seek (abfd, nameoff, SEEK_SET) != 0
|
|
|| bfd_bread (cmd->name_str, namelen, abfd) != namelen)
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_dylib (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
bfd_mach_o_dylib_command *cmd = &command->command.dylib;
|
|
struct mach_o_dylib_command_external raw;
|
|
unsigned int nameoff;
|
|
unsigned int namelen;
|
|
|
|
switch (command->type)
|
|
{
|
|
case BFD_MACH_O_LC_LOAD_DYLIB:
|
|
case BFD_MACH_O_LC_LAZY_LOAD_DYLIB:
|
|
case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
|
|
case BFD_MACH_O_LC_ID_DYLIB:
|
|
case BFD_MACH_O_LC_REEXPORT_DYLIB:
|
|
case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
|
|
break;
|
|
default:
|
|
BFD_FAIL ();
|
|
return FALSE;
|
|
}
|
|
|
|
if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
nameoff = bfd_h_get_32 (abfd, raw.name);
|
|
cmd->timestamp = bfd_h_get_32 (abfd, raw.timestamp);
|
|
cmd->current_version = bfd_h_get_32 (abfd, raw.current_version);
|
|
cmd->compatibility_version = bfd_h_get_32 (abfd, raw.compatibility_version);
|
|
|
|
cmd->name_offset = command->offset + nameoff;
|
|
namelen = command->len - nameoff;
|
|
cmd->name_str = bfd_alloc (abfd, namelen);
|
|
if (cmd->name_str == NULL)
|
|
return FALSE;
|
|
if (bfd_seek (abfd, mdata->hdr_offset + cmd->name_offset, SEEK_SET) != 0
|
|
|| bfd_bread (cmd->name_str, namelen, abfd) != namelen)
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_prebound_dylib (bfd *abfd,
|
|
bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib;
|
|
struct mach_o_prebound_dylib_command_external raw;
|
|
unsigned int nameoff;
|
|
unsigned int modoff;
|
|
unsigned int str_len;
|
|
unsigned char *str;
|
|
|
|
if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
nameoff = bfd_h_get_32 (abfd, raw.name);
|
|
modoff = bfd_h_get_32 (abfd, raw.linked_modules);
|
|
if (nameoff > command->len || modoff > command->len)
|
|
return FALSE;
|
|
|
|
str_len = command->len - sizeof (raw);
|
|
str = bfd_alloc (abfd, str_len);
|
|
if (str == NULL)
|
|
return FALSE;
|
|
if (bfd_bread (str, str_len, abfd) != str_len)
|
|
return FALSE;
|
|
|
|
cmd->name_offset = command->offset + nameoff;
|
|
cmd->nmodules = bfd_h_get_32 (abfd, raw.nmodules);
|
|
cmd->linked_modules_offset = command->offset + modoff;
|
|
|
|
cmd->name_str = (char *)str + nameoff - (sizeof (raw) + BFD_MACH_O_LC_SIZE);
|
|
cmd->linked_modules = str + modoff - (sizeof (raw) + BFD_MACH_O_LC_SIZE);
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_prebind_cksum (bfd *abfd,
|
|
bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_prebind_cksum_command *cmd = &command->command.prebind_cksum;
|
|
struct mach_o_prebind_cksum_command_external raw;
|
|
|
|
if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
cmd->cksum = bfd_get_32 (abfd, raw.cksum);
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_twolevel_hints (bfd *abfd,
|
|
bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_twolevel_hints_command *cmd = &command->command.twolevel_hints;
|
|
struct mach_o_twolevel_hints_command_external raw;
|
|
|
|
if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
cmd->offset = bfd_get_32 (abfd, raw.offset);
|
|
cmd->nhints = bfd_get_32 (abfd, raw.nhints);
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_fvmlib (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_fvmlib_command *fvm = &command->command.fvmlib;
|
|
struct mach_o_fvmlib_command_external raw;
|
|
unsigned int nameoff;
|
|
unsigned int namelen;
|
|
|
|
if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
nameoff = bfd_h_get_32 (abfd, raw.name);
|
|
fvm->minor_version = bfd_h_get_32 (abfd, raw.minor_version);
|
|
fvm->header_addr = bfd_h_get_32 (abfd, raw.header_addr);
|
|
|
|
fvm->name_offset = command->offset + nameoff;
|
|
namelen = command->len - nameoff;
|
|
fvm->name_str = bfd_alloc (abfd, namelen);
|
|
if (fvm->name_str == NULL)
|
|
return FALSE;
|
|
if (bfd_seek (abfd, fvm->name_offset, SEEK_SET) != 0
|
|
|| bfd_bread (fvm->name_str, namelen, abfd) != namelen)
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_thread (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
bfd_mach_o_thread_command *cmd = &command->command.thread;
|
|
unsigned int offset;
|
|
unsigned int nflavours;
|
|
unsigned int i;
|
|
|
|
BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
|
|
|| (command->type == BFD_MACH_O_LC_UNIXTHREAD));
|
|
|
|
/* Count the number of threads. */
|
|
offset = 8;
|
|
nflavours = 0;
|
|
while (offset != command->len)
|
|
{
|
|
struct mach_o_thread_command_external raw;
|
|
|
|
if (offset >= command->len)
|
|
return FALSE;
|
|
|
|
if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
|
|
|| bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
offset += sizeof (raw) + bfd_h_get_32 (abfd, raw.count) * 4;
|
|
nflavours++;
|
|
}
|
|
|
|
/* Allocate threads. */
|
|
cmd->flavours = bfd_alloc2
|
|
(abfd, nflavours, sizeof (bfd_mach_o_thread_flavour));
|
|
if (cmd->flavours == NULL)
|
|
return FALSE;
|
|
cmd->nflavours = nflavours;
|
|
|
|
offset = 8;
|
|
nflavours = 0;
|
|
while (offset != command->len)
|
|
{
|
|
struct mach_o_thread_command_external raw;
|
|
|
|
if (offset >= command->len)
|
|
return FALSE;
|
|
|
|
if (nflavours >= cmd->nflavours)
|
|
return FALSE;
|
|
|
|
if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
|
|
|| bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, raw.flavour);
|
|
cmd->flavours[nflavours].offset = command->offset + offset + sizeof (raw);
|
|
cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, raw.count) * 4;
|
|
offset += cmd->flavours[nflavours].size + sizeof (raw);
|
|
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:
|
|
case BFD_MACH_O_CPU_TYPE_POWERPC_64:
|
|
flavourstr =
|
|
bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour);
|
|
break;
|
|
case BFD_MACH_O_CPU_TYPE_I386:
|
|
case BFD_MACH_O_CPU_TYPE_X86_64:
|
|
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 = bfd_alloc (abfd, snamelen);
|
|
if (sname == NULL)
|
|
return FALSE;
|
|
|
|
for (;;)
|
|
{
|
|
sprintf (sname, "%s.%s.%u", prefix, flavourstr, j);
|
|
if (bfd_get_section_by_name (abfd, sname) == NULL)
|
|
break;
|
|
j++;
|
|
}
|
|
|
|
bfdsec = bfd_make_section_with_flags (abfd, sname, SEC_HAS_CONTENTS);
|
|
|
|
bfdsec->vma = 0;
|
|
bfdsec->lma = 0;
|
|
bfdsec->size = cmd->flavours[i].size;
|
|
bfdsec->filepos = cmd->flavours[i].offset;
|
|
bfdsec->alignment_power = 0x0;
|
|
|
|
cmd->section = bfdsec;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
|
|
BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
|
|
|
|
{
|
|
struct mach_o_dysymtab_command_external raw;
|
|
|
|
if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
cmd->ilocalsym = bfd_h_get_32 (abfd, raw.ilocalsym);
|
|
cmd->nlocalsym = bfd_h_get_32 (abfd, raw.nlocalsym);
|
|
cmd->iextdefsym = bfd_h_get_32 (abfd, raw.iextdefsym);
|
|
cmd->nextdefsym = bfd_h_get_32 (abfd, raw.nextdefsym);
|
|
cmd->iundefsym = bfd_h_get_32 (abfd, raw.iundefsym);
|
|
cmd->nundefsym = bfd_h_get_32 (abfd, raw.nundefsym);
|
|
cmd->tocoff = bfd_h_get_32 (abfd, raw.tocoff);
|
|
cmd->ntoc = bfd_h_get_32 (abfd, raw.ntoc);
|
|
cmd->modtaboff = bfd_h_get_32 (abfd, raw.modtaboff);
|
|
cmd->nmodtab = bfd_h_get_32 (abfd, raw.nmodtab);
|
|
cmd->extrefsymoff = bfd_h_get_32 (abfd, raw.extrefsymoff);
|
|
cmd->nextrefsyms = bfd_h_get_32 (abfd, raw.nextrefsyms);
|
|
cmd->indirectsymoff = bfd_h_get_32 (abfd, raw.indirectsymoff);
|
|
cmd->nindirectsyms = bfd_h_get_32 (abfd, raw.nindirectsyms);
|
|
cmd->extreloff = bfd_h_get_32 (abfd, raw.extreloff);
|
|
cmd->nextrel = bfd_h_get_32 (abfd, raw.nextrel);
|
|
cmd->locreloff = bfd_h_get_32 (abfd, raw.locreloff);
|
|
cmd->nlocrel = bfd_h_get_32 (abfd, raw.nlocrel);
|
|
}
|
|
|
|
if (cmd->nmodtab != 0)
|
|
{
|
|
unsigned int i;
|
|
int wide = bfd_mach_o_wide_p (abfd);
|
|
unsigned int module_len = wide ? 56 : 52;
|
|
|
|
cmd->dylib_module =
|
|
bfd_alloc2 (abfd, cmd->nmodtab, sizeof (bfd_mach_o_dylib_module));
|
|
if (cmd->dylib_module == NULL)
|
|
return FALSE;
|
|
|
|
if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
|
|
return FALSE;
|
|
|
|
for (i = 0; i < cmd->nmodtab; i++)
|
|
{
|
|
bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
|
|
unsigned long v;
|
|
unsigned char buf[56];
|
|
|
|
if (bfd_bread ((void *) buf, module_len, abfd) != module_len)
|
|
return FALSE;
|
|
|
|
module->module_name_idx = bfd_h_get_32 (abfd, buf + 0);
|
|
module->iextdefsym = bfd_h_get_32 (abfd, buf + 4);
|
|
module->nextdefsym = bfd_h_get_32 (abfd, buf + 8);
|
|
module->irefsym = bfd_h_get_32 (abfd, buf + 12);
|
|
module->nrefsym = bfd_h_get_32 (abfd, buf + 16);
|
|
module->ilocalsym = bfd_h_get_32 (abfd, buf + 20);
|
|
module->nlocalsym = bfd_h_get_32 (abfd, buf + 24);
|
|
module->iextrel = bfd_h_get_32 (abfd, buf + 28);
|
|
module->nextrel = bfd_h_get_32 (abfd, buf + 32);
|
|
v = bfd_h_get_32 (abfd, buf +36);
|
|
module->iinit = v & 0xffff;
|
|
module->iterm = (v >> 16) & 0xffff;
|
|
v = bfd_h_get_32 (abfd, buf + 40);
|
|
module->ninit = v & 0xffff;
|
|
module->nterm = (v >> 16) & 0xffff;
|
|
if (wide)
|
|
{
|
|
module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 44);
|
|
module->objc_module_info_addr = bfd_h_get_64 (abfd, buf + 48);
|
|
}
|
|
else
|
|
{
|
|
module->objc_module_info_addr = bfd_h_get_32 (abfd, buf + 44);
|
|
module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 48);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (cmd->ntoc != 0)
|
|
{
|
|
unsigned long i;
|
|
|
|
cmd->dylib_toc = bfd_alloc2
|
|
(abfd, cmd->ntoc, sizeof (bfd_mach_o_dylib_table_of_content));
|
|
if (cmd->dylib_toc == NULL)
|
|
return FALSE;
|
|
|
|
if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
|
|
return FALSE;
|
|
|
|
for (i = 0; i < cmd->ntoc; i++)
|
|
{
|
|
struct mach_o_dylib_table_of_contents_external raw;
|
|
bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
|
|
|
|
if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
toc->symbol_index = bfd_h_get_32 (abfd, raw.symbol_index);
|
|
toc->module_index = bfd_h_get_32 (abfd, raw.module_index);
|
|
}
|
|
}
|
|
|
|
if (cmd->nindirectsyms != 0)
|
|
{
|
|
unsigned int i;
|
|
|
|
cmd->indirect_syms = bfd_alloc2
|
|
(abfd, cmd->nindirectsyms, sizeof (unsigned int));
|
|
if (cmd->indirect_syms == NULL)
|
|
return FALSE;
|
|
|
|
if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
|
|
return FALSE;
|
|
|
|
for (i = 0; i < cmd->nindirectsyms; i++)
|
|
{
|
|
unsigned char raw[4];
|
|
unsigned int *is = &cmd->indirect_syms[i];
|
|
|
|
if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
*is = bfd_h_get_32 (abfd, raw);
|
|
}
|
|
}
|
|
|
|
if (cmd->nextrefsyms != 0)
|
|
{
|
|
unsigned long v;
|
|
unsigned int i;
|
|
|
|
cmd->ext_refs = bfd_alloc2
|
|
(abfd, cmd->nextrefsyms, sizeof (bfd_mach_o_dylib_reference));
|
|
if (cmd->ext_refs == NULL)
|
|
return FALSE;
|
|
|
|
if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
|
|
return FALSE;
|
|
|
|
for (i = 0; i < cmd->nextrefsyms; i++)
|
|
{
|
|
unsigned char raw[4];
|
|
bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
|
|
|
|
if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
/* Fields isym and flags are written as bit-fields, thus we need
|
|
a specific processing for endianness. */
|
|
v = bfd_h_get_32 (abfd, raw);
|
|
if (bfd_big_endian (abfd))
|
|
{
|
|
ref->isym = (v >> 8) & 0xffffff;
|
|
ref->flags = v & 0xff;
|
|
}
|
|
else
|
|
{
|
|
ref->isym = v & 0xffffff;
|
|
ref->flags = (v >> 24) & 0xff;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (mdata->dysymtab)
|
|
return FALSE;
|
|
mdata->dysymtab = cmd;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_symtab (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_symtab_command *symtab = &command->command.symtab;
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
struct mach_o_symtab_command_external raw;
|
|
|
|
BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
|
|
|
|
if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
symtab->symoff = bfd_h_get_32 (abfd, raw.symoff);
|
|
symtab->nsyms = bfd_h_get_32 (abfd, raw.nsyms);
|
|
symtab->stroff = bfd_h_get_32 (abfd, raw.stroff);
|
|
symtab->strsize = bfd_h_get_32 (abfd, raw.strsize);
|
|
symtab->symbols = NULL;
|
|
symtab->strtab = NULL;
|
|
|
|
if (symtab->nsyms != 0)
|
|
abfd->flags |= HAS_SYMS;
|
|
|
|
if (mdata->symtab)
|
|
return FALSE;
|
|
mdata->symtab = symtab;
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_uuid (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_uuid_command *cmd = &command->command.uuid;
|
|
|
|
BFD_ASSERT (command->type == BFD_MACH_O_LC_UUID);
|
|
|
|
if (bfd_bread (cmd->uuid, 16, abfd) != 16)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_linkedit (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_linkedit_command *cmd = &command->command.linkedit;
|
|
struct mach_o_linkedit_data_command_external raw;
|
|
|
|
if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
cmd->dataoff = bfd_get_32 (abfd, raw.dataoff);
|
|
cmd->datasize = bfd_get_32 (abfd, raw.datasize);
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_str (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_str_command *cmd = &command->command.str;
|
|
struct mach_o_str_command_external raw;
|
|
unsigned long off;
|
|
|
|
if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
off = bfd_get_32 (abfd, raw.str);
|
|
cmd->stroff = command->offset + off;
|
|
cmd->str_len = command->len - off;
|
|
cmd->str = bfd_alloc (abfd, cmd->str_len);
|
|
if (cmd->str == NULL)
|
|
return FALSE;
|
|
if (bfd_seek (abfd, cmd->stroff, SEEK_SET) != 0
|
|
|| bfd_bread ((void *) cmd->str, cmd->str_len, abfd) != cmd->str_len)
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
static unsigned char *
|
|
bfd_mach_o_alloc_and_read (bfd *abfd, unsigned int off, unsigned int size)
|
|
{
|
|
unsigned char *buf;
|
|
|
|
buf = bfd_alloc (abfd, size);
|
|
if (buf == NULL)
|
|
return NULL;
|
|
if (bfd_seek (abfd, off, SEEK_SET) != 0
|
|
|| bfd_bread (buf, size, abfd) != size)
|
|
return NULL;
|
|
return buf;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_dyld_content (bfd *abfd, bfd_mach_o_dyld_info_command *cmd)
|
|
{
|
|
/* Read rebase content. */
|
|
if (cmd->rebase_content == NULL && cmd->rebase_size != 0)
|
|
{
|
|
cmd->rebase_content =
|
|
bfd_mach_o_alloc_and_read (abfd, cmd->rebase_off, cmd->rebase_size);
|
|
if (cmd->rebase_content == NULL)
|
|
return FALSE;
|
|
}
|
|
|
|
/* Read bind content. */
|
|
if (cmd->bind_content == NULL && cmd->bind_size != 0)
|
|
{
|
|
cmd->bind_content =
|
|
bfd_mach_o_alloc_and_read (abfd, cmd->bind_off, cmd->bind_size);
|
|
if (cmd->bind_content == NULL)
|
|
return FALSE;
|
|
}
|
|
|
|
/* Read weak bind content. */
|
|
if (cmd->weak_bind_content == NULL && cmd->weak_bind_size != 0)
|
|
{
|
|
cmd->weak_bind_content = bfd_mach_o_alloc_and_read
|
|
(abfd, cmd->weak_bind_off, cmd->weak_bind_size);
|
|
if (cmd->weak_bind_content == NULL)
|
|
return FALSE;
|
|
}
|
|
|
|
/* Read lazy bind content. */
|
|
if (cmd->lazy_bind_content == NULL && cmd->lazy_bind_size != 0)
|
|
{
|
|
cmd->lazy_bind_content = bfd_mach_o_alloc_and_read
|
|
(abfd, cmd->lazy_bind_off, cmd->lazy_bind_size);
|
|
if (cmd->lazy_bind_content == NULL)
|
|
return FALSE;
|
|
}
|
|
|
|
/* Read export content. */
|
|
if (cmd->export_content == NULL && cmd->export_size != 0)
|
|
{
|
|
cmd->export_content = bfd_mach_o_alloc_and_read
|
|
(abfd, cmd->export_off, cmd->export_size);
|
|
if (cmd->export_content == NULL)
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_dyld_info (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
|
|
struct mach_o_dyld_info_command_external raw;
|
|
|
|
if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
cmd->rebase_off = bfd_get_32 (abfd, raw.rebase_off);
|
|
cmd->rebase_size = bfd_get_32 (abfd, raw.rebase_size);
|
|
cmd->rebase_content = NULL;
|
|
cmd->bind_off = bfd_get_32 (abfd, raw.bind_off);
|
|
cmd->bind_size = bfd_get_32 (abfd, raw.bind_size);
|
|
cmd->bind_content = NULL;
|
|
cmd->weak_bind_off = bfd_get_32 (abfd, raw.weak_bind_off);
|
|
cmd->weak_bind_size = bfd_get_32 (abfd, raw.weak_bind_size);
|
|
cmd->weak_bind_content = NULL;
|
|
cmd->lazy_bind_off = bfd_get_32 (abfd, raw.lazy_bind_off);
|
|
cmd->lazy_bind_size = bfd_get_32 (abfd, raw.lazy_bind_size);
|
|
cmd->lazy_bind_content = NULL;
|
|
cmd->export_off = bfd_get_32 (abfd, raw.export_off);
|
|
cmd->export_size = bfd_get_32 (abfd, raw.export_size);
|
|
cmd->export_content = NULL;
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_version_min (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_version_min_command *cmd = &command->command.version_min;
|
|
struct mach_o_version_min_command_external raw;
|
|
unsigned int ver;
|
|
|
|
if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
ver = bfd_get_32 (abfd, raw.version);
|
|
cmd->rel = ver >> 16;
|
|
cmd->maj = ver >> 8;
|
|
cmd->min = ver;
|
|
cmd->reserved = bfd_get_32 (abfd, raw.reserved);
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_encryption_info (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_encryption_info_command *cmd = &command->command.encryption_info;
|
|
struct mach_o_encryption_info_command_external raw;
|
|
|
|
if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
cmd->cryptoff = bfd_get_32 (abfd, raw.cryptoff);
|
|
cmd->cryptsize = bfd_get_32 (abfd, raw.cryptsize);
|
|
cmd->cryptid = bfd_get_32 (abfd, raw.cryptid);
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_encryption_info_64 (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_encryption_info_command *cmd = &command->command.encryption_info;
|
|
struct mach_o_encryption_info_64_command_external raw;
|
|
|
|
if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
cmd->cryptoff = bfd_get_32 (abfd, raw.cryptoff);
|
|
cmd->cryptsize = bfd_get_32 (abfd, raw.cryptsize);
|
|
cmd->cryptid = bfd_get_32 (abfd, raw.cryptid);
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_main (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_main_command *cmd = &command->command.main;
|
|
struct mach_o_entry_point_command_external raw;
|
|
|
|
if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
cmd->entryoff = bfd_get_64 (abfd, raw.entryoff);
|
|
cmd->stacksize = bfd_get_64 (abfd, raw.stacksize);
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_source_version (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_source_version_command *cmd = &command->command.source_version;
|
|
struct mach_o_source_version_command_external raw;
|
|
bfd_uint64_t ver;
|
|
|
|
if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
ver = bfd_get_64 (abfd, raw.version);
|
|
/* Note: we use a serie of shift to avoid shift > 32 (for which gcc
|
|
generates warnings) in case of the host doesn't support 64 bit
|
|
integers. */
|
|
cmd->e = ver & 0x3ff;
|
|
ver >>= 10;
|
|
cmd->d = ver & 0x3ff;
|
|
ver >>= 10;
|
|
cmd->c = ver & 0x3ff;
|
|
ver >>= 10;
|
|
cmd->b = ver & 0x3ff;
|
|
ver >>= 10;
|
|
cmd->a = ver & 0xffffff;
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_segment (bfd *abfd,
|
|
bfd_mach_o_load_command *command,
|
|
unsigned int wide)
|
|
{
|
|
bfd_mach_o_segment_command *seg = &command->command.segment;
|
|
unsigned long i;
|
|
|
|
if (wide)
|
|
{
|
|
struct mach_o_segment_command_64_external raw;
|
|
|
|
BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
|
|
|
|
if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
memcpy (seg->segname, raw.segname, 16);
|
|
seg->segname[16] = '\0';
|
|
|
|
seg->vmaddr = bfd_h_get_64 (abfd, raw.vmaddr);
|
|
seg->vmsize = bfd_h_get_64 (abfd, raw.vmsize);
|
|
seg->fileoff = bfd_h_get_64 (abfd, raw.fileoff);
|
|
seg->filesize = bfd_h_get_64 (abfd, raw.filesize);
|
|
seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
|
|
seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
|
|
seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
|
|
seg->flags = bfd_h_get_32 (abfd, raw.flags);
|
|
}
|
|
else
|
|
{
|
|
struct mach_o_segment_command_32_external raw;
|
|
|
|
BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
|
|
|
|
if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
|
|
return FALSE;
|
|
|
|
memcpy (seg->segname, raw.segname, 16);
|
|
seg->segname[16] = '\0';
|
|
|
|
seg->vmaddr = bfd_h_get_32 (abfd, raw.vmaddr);
|
|
seg->vmsize = bfd_h_get_32 (abfd, raw.vmsize);
|
|
seg->fileoff = bfd_h_get_32 (abfd, raw.fileoff);
|
|
seg->filesize = bfd_h_get_32 (abfd, raw.filesize);
|
|
seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
|
|
seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
|
|
seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
|
|
seg->flags = bfd_h_get_32 (abfd, raw.flags);
|
|
}
|
|
seg->sect_head = NULL;
|
|
seg->sect_tail = NULL;
|
|
|
|
for (i = 0; i < seg->nsects; i++)
|
|
{
|
|
asection *sec;
|
|
|
|
sec = bfd_mach_o_read_section (abfd, seg->initprot, wide);
|
|
if (sec == NULL)
|
|
return FALSE;
|
|
|
|
bfd_mach_o_append_section_to_segment
|
|
(seg, bfd_mach_o_get_mach_o_section (sec));
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
return bfd_mach_o_read_segment (abfd, command, 0);
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
return bfd_mach_o_read_segment (abfd, command, 1);
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_read_command (bfd *abfd, bfd_mach_o_load_command *command)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
struct mach_o_load_command_external raw;
|
|
unsigned int cmd;
|
|
|
|
/* Read command type and length. */
|
|
if (bfd_seek (abfd, mdata->hdr_offset + command->offset, SEEK_SET) != 0
|
|
|| bfd_bread (&raw, BFD_MACH_O_LC_SIZE, abfd) != BFD_MACH_O_LC_SIZE)
|
|
return FALSE;
|
|
|
|
cmd = bfd_h_get_32 (abfd, raw.cmd);
|
|
command->type = cmd & ~BFD_MACH_O_LC_REQ_DYLD;
|
|
command->type_required = cmd & BFD_MACH_O_LC_REQ_DYLD ? TRUE : FALSE;
|
|
command->len = bfd_h_get_32 (abfd, raw.cmdsize);
|
|
|
|
switch (command->type)
|
|
{
|
|
case BFD_MACH_O_LC_SEGMENT:
|
|
if (!bfd_mach_o_read_segment_32 (abfd, command))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_SEGMENT_64:
|
|
if (!bfd_mach_o_read_segment_64 (abfd, command))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_SYMTAB:
|
|
if (!bfd_mach_o_read_symtab (abfd, command))
|
|
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_read_thread (abfd, command))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_LOAD_DYLINKER:
|
|
case BFD_MACH_O_LC_ID_DYLINKER:
|
|
case BFD_MACH_O_LC_DYLD_ENVIRONMENT:
|
|
if (!bfd_mach_o_read_dylinker (abfd, command))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_LOAD_DYLIB:
|
|
case BFD_MACH_O_LC_LAZY_LOAD_DYLIB:
|
|
case BFD_MACH_O_LC_ID_DYLIB:
|
|
case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
|
|
case BFD_MACH_O_LC_REEXPORT_DYLIB:
|
|
case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
|
|
if (!bfd_mach_o_read_dylib (abfd, command))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_PREBOUND_DYLIB:
|
|
if (!bfd_mach_o_read_prebound_dylib (abfd, command))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_LOADFVMLIB:
|
|
case BFD_MACH_O_LC_IDFVMLIB:
|
|
if (!bfd_mach_o_read_fvmlib (abfd, command))
|
|
return FALSE;
|
|
break;
|
|
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_ROUTINES_64:
|
|
break;
|
|
case BFD_MACH_O_LC_SUB_FRAMEWORK:
|
|
case BFD_MACH_O_LC_SUB_UMBRELLA:
|
|
case BFD_MACH_O_LC_SUB_LIBRARY:
|
|
case BFD_MACH_O_LC_SUB_CLIENT:
|
|
case BFD_MACH_O_LC_RPATH:
|
|
if (!bfd_mach_o_read_str (abfd, command))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_DYSYMTAB:
|
|
if (!bfd_mach_o_read_dysymtab (abfd, command))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_PREBIND_CKSUM:
|
|
if (!bfd_mach_o_read_prebind_cksum (abfd, command))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_TWOLEVEL_HINTS:
|
|
if (!bfd_mach_o_read_twolevel_hints (abfd, command))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_UUID:
|
|
if (!bfd_mach_o_read_uuid (abfd, command))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_CODE_SIGNATURE:
|
|
case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
|
|
case BFD_MACH_O_LC_FUNCTION_STARTS:
|
|
case BFD_MACH_O_LC_DATA_IN_CODE:
|
|
case BFD_MACH_O_LC_DYLIB_CODE_SIGN_DRS:
|
|
case BFD_MACH_O_LC_LINKER_OPTIMIZATION_HINT:
|
|
if (!bfd_mach_o_read_linkedit (abfd, command))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_ENCRYPTION_INFO:
|
|
if (!bfd_mach_o_read_encryption_info (abfd, command))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_ENCRYPTION_INFO_64:
|
|
if (!bfd_mach_o_read_encryption_info_64 (abfd, command))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_DYLD_INFO:
|
|
if (!bfd_mach_o_read_dyld_info (abfd, command))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_VERSION_MIN_MACOSX:
|
|
case BFD_MACH_O_LC_VERSION_MIN_IPHONEOS:
|
|
case BFD_MACH_O_LC_VERSION_MIN_WATCHOS:
|
|
if (!bfd_mach_o_read_version_min (abfd, command))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_MAIN:
|
|
if (!bfd_mach_o_read_main (abfd, command))
|
|
return FALSE;
|
|
break;
|
|
case BFD_MACH_O_LC_SOURCE_VERSION:
|
|
if (!bfd_mach_o_read_source_version (abfd, command))
|
|
return FALSE;
|
|
break;
|
|
default:
|
|
command->len = 0;
|
|
_bfd_error_handler (_("%B: unknown load command 0x%lx"),
|
|
abfd, (unsigned long) command->type);
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
bfd_mach_o_flatten_sections (bfd *abfd)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
bfd_mach_o_load_command *cmd;
|
|
long csect = 0;
|
|
|
|
/* Count total number of sections. */
|
|
mdata->nsects = 0;
|
|
|
|
for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
|
|
{
|
|
if (cmd->type == BFD_MACH_O_LC_SEGMENT
|
|
|| cmd->type == BFD_MACH_O_LC_SEGMENT_64)
|
|
{
|
|
bfd_mach_o_segment_command *seg = &cmd->command.segment;
|
|
|
|
mdata->nsects += seg->nsects;
|
|
}
|
|
}
|
|
|
|
/* Allocate sections array. */
|
|
mdata->sections = bfd_alloc2 (abfd,
|
|
mdata->nsects, sizeof (bfd_mach_o_section *));
|
|
|
|
/* Fill the array. */
|
|
csect = 0;
|
|
|
|
for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
|
|
{
|
|
if (cmd->type == BFD_MACH_O_LC_SEGMENT
|
|
|| cmd->type == BFD_MACH_O_LC_SEGMENT_64)
|
|
{
|
|
bfd_mach_o_segment_command *seg = &cmd->command.segment;
|
|
bfd_mach_o_section *sec;
|
|
|
|
BFD_ASSERT (csect + seg->nsects <= mdata->nsects);
|
|
|
|
for (sec = seg->sect_head; sec != NULL; sec = sec->next)
|
|
mdata->sections[csect++] = sec;
|
|
}
|
|
}
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_scan_start_address (bfd *abfd)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
bfd_mach_o_thread_command *thr = NULL;
|
|
bfd_mach_o_load_command *cmd;
|
|
unsigned long i;
|
|
|
|
for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
|
|
if (cmd->type == BFD_MACH_O_LC_THREAD
|
|
|| cmd->type == BFD_MACH_O_LC_UNIXTHREAD)
|
|
{
|
|
thr = &cmd->command.thread;
|
|
break;
|
|
}
|
|
else if (cmd->type == BFD_MACH_O_LC_MAIN && mdata->nsects > 1)
|
|
{
|
|
bfd_mach_o_main_command *main_cmd = &cmd->command.main;
|
|
bfd_mach_o_section *text_sect = mdata->sections[0];
|
|
|
|
if (text_sect)
|
|
{
|
|
abfd->start_address = main_cmd->entryoff
|
|
+ (text_sect->addr - text_sect->offset);
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
/* An object file has no start address, so do not fail if not found. */
|
|
if (thr == NULL)
|
|
return TRUE;
|
|
|
|
/* FIXME: create a subtarget hook ? */
|
|
for (i = 0; i < thr->nflavours; i++)
|
|
{
|
|
if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
|
|
&& (thr->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE32))
|
|
{
|
|
unsigned char buf[4];
|
|
|
|
if (bfd_seek (abfd, thr->flavours[i].offset + 40, SEEK_SET) != 0
|
|
|| bfd_bread (buf, 4, abfd) != 4)
|
|
return FALSE;
|
|
|
|
abfd->start_address = bfd_h_get_32 (abfd, buf);
|
|
}
|
|
else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC)
|
|
&& (thr->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE))
|
|
{
|
|
unsigned char buf[4];
|
|
|
|
if (bfd_seek (abfd, thr->flavours[i].offset + 0, SEEK_SET) != 0
|
|
|| bfd_bread (buf, 4, abfd) != 4)
|
|
return FALSE;
|
|
|
|
abfd->start_address = bfd_h_get_32 (abfd, buf);
|
|
}
|
|
else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC_64)
|
|
&& (thr->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE64))
|
|
{
|
|
unsigned char buf[8];
|
|
|
|
if (bfd_seek (abfd, thr->flavours[i].offset + 0, SEEK_SET) != 0
|
|
|| bfd_bread (buf, 8, abfd) != 8)
|
|
return FALSE;
|
|
|
|
abfd->start_address = bfd_h_get_64 (abfd, buf);
|
|
}
|
|
else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_X86_64)
|
|
&& (thr->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE64))
|
|
{
|
|
unsigned char buf[8];
|
|
|
|
if (bfd_seek (abfd, thr->flavours[i].offset + (16 * 8), SEEK_SET) != 0
|
|
|| bfd_bread (buf, 8, abfd) != 8)
|
|
return FALSE;
|
|
|
|
abfd->start_address = bfd_h_get_64 (abfd, buf);
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
bfd_boolean
|
|
bfd_mach_o_set_arch_mach (bfd *abfd,
|
|
enum bfd_architecture arch,
|
|
unsigned long machine)
|
|
{
|
|
bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
|
|
|
|
/* If this isn't the right architecture for this backend, and this
|
|
isn't the generic backend, fail. */
|
|
if (arch != bed->arch
|
|
&& arch != bfd_arch_unknown
|
|
&& bed->arch != bfd_arch_unknown)
|
|
return FALSE;
|
|
|
|
return bfd_default_set_arch_mach (abfd, arch, machine);
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_scan (bfd *abfd,
|
|
bfd_mach_o_header *header,
|
|
bfd_mach_o_data_struct *mdata)
|
|
{
|
|
unsigned int i;
|
|
enum bfd_architecture cputype;
|
|
unsigned long cpusubtype;
|
|
unsigned int hdrsize;
|
|
|
|
hdrsize = mach_o_wide_p (header) ?
|
|
BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
|
|
|
|
mdata->header = *header;
|
|
|
|
abfd->flags = abfd->flags & BFD_IN_MEMORY;
|
|
switch (header->filetype)
|
|
{
|
|
case BFD_MACH_O_MH_OBJECT:
|
|
abfd->flags |= HAS_RELOC;
|
|
break;
|
|
case BFD_MACH_O_MH_EXECUTE:
|
|
abfd->flags |= EXEC_P;
|
|
break;
|
|
case BFD_MACH_O_MH_DYLIB:
|
|
case BFD_MACH_O_MH_BUNDLE:
|
|
abfd->flags |= DYNAMIC;
|
|
break;
|
|
}
|
|
|
|
abfd->tdata.mach_o_data = mdata;
|
|
|
|
bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype,
|
|
&cputype, &cpusubtype);
|
|
if (cputype == bfd_arch_unknown)
|
|
{
|
|
_bfd_error_handler
|
|
/* xgettext:c-format */
|
|
(_("bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx"),
|
|
header->cputype, header->cpusubtype);
|
|
return FALSE;
|
|
}
|
|
|
|
bfd_set_arch_mach (abfd, cputype, cpusubtype);
|
|
|
|
if (header->ncmds != 0)
|
|
{
|
|
bfd_mach_o_load_command *cmd;
|
|
|
|
mdata->first_command = NULL;
|
|
mdata->last_command = NULL;
|
|
|
|
cmd = bfd_alloc2 (abfd, header->ncmds, sizeof (bfd_mach_o_load_command));
|
|
if (cmd == NULL)
|
|
return FALSE;
|
|
|
|
for (i = 0; i < header->ncmds; i++)
|
|
{
|
|
bfd_mach_o_load_command *cur = &cmd[i];
|
|
|
|
bfd_mach_o_append_command (abfd, cur);
|
|
|
|
if (i == 0)
|
|
cur->offset = hdrsize;
|
|
else
|
|
{
|
|
bfd_mach_o_load_command *prev = &cmd[i - 1];
|
|
cur->offset = prev->offset + prev->len;
|
|
}
|
|
|
|
if (!bfd_mach_o_read_command (abfd, cur))
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/* Sections should be flatten before scanning start address. */
|
|
bfd_mach_o_flatten_sections (abfd);
|
|
if (!bfd_mach_o_scan_start_address (abfd))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
bfd_boolean
|
|
bfd_mach_o_mkobject_init (bfd *abfd)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = NULL;
|
|
|
|
mdata = bfd_zalloc (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->first_command = NULL;
|
|
mdata->last_command = NULL;
|
|
mdata->nsects = 0;
|
|
mdata->sections = NULL;
|
|
mdata->dyn_reloc_cache = NULL;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_gen_mkobject (bfd *abfd)
|
|
{
|
|
bfd_mach_o_data_struct *mdata;
|
|
|
|
if (!bfd_mach_o_mkobject_init (abfd))
|
|
return FALSE;
|
|
|
|
mdata = bfd_mach_o_get_data (abfd);
|
|
mdata->header.magic = BFD_MACH_O_MH_MAGIC;
|
|
mdata->header.cputype = 0;
|
|
mdata->header.cpusubtype = 0;
|
|
mdata->header.byteorder = abfd->xvec->byteorder;
|
|
mdata->header.version = 1;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
const bfd_target *
|
|
bfd_mach_o_header_p (bfd *abfd,
|
|
file_ptr hdr_off,
|
|
bfd_mach_o_filetype filetype,
|
|
bfd_mach_o_cpu_type cputype)
|
|
{
|
|
bfd_mach_o_header header;
|
|
bfd_mach_o_data_struct *mdata;
|
|
|
|
if (!bfd_mach_o_read_header (abfd, hdr_off, &header))
|
|
goto wrong;
|
|
|
|
if (! (header.byteorder == BFD_ENDIAN_BIG
|
|
|| header.byteorder == BFD_ENDIAN_LITTLE))
|
|
{
|
|
_bfd_error_handler (_("unknown header byte-order value 0x%lx"),
|
|
(unsigned 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;
|
|
|
|
/* Check cputype and filetype.
|
|
In case of wildcard, do not accept magics that are handled by existing
|
|
targets. */
|
|
if (cputype)
|
|
{
|
|
if (header.cputype != cputype)
|
|
goto wrong;
|
|
}
|
|
else
|
|
{
|
|
#ifndef BFD64
|
|
/* Do not recognize 64 architectures if not configured for 64bit targets.
|
|
This could happen only for generic targets. */
|
|
if (mach_o_wide_p (&header))
|
|
goto wrong;
|
|
#endif
|
|
}
|
|
|
|
if (filetype)
|
|
{
|
|
if (header.filetype != filetype)
|
|
goto wrong;
|
|
}
|
|
else
|
|
{
|
|
switch (header.filetype)
|
|
{
|
|
case BFD_MACH_O_MH_CORE:
|
|
/* Handled by core_p */
|
|
goto wrong;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
mdata = (bfd_mach_o_data_struct *) bfd_zalloc (abfd, sizeof (*mdata));
|
|
if (mdata == NULL)
|
|
goto fail;
|
|
mdata->hdr_offset = hdr_off;
|
|
|
|
if (!bfd_mach_o_scan (abfd, &header, mdata))
|
|
goto wrong;
|
|
|
|
return abfd->xvec;
|
|
|
|
wrong:
|
|
bfd_set_error (bfd_error_wrong_format);
|
|
|
|
fail:
|
|
return NULL;
|
|
}
|
|
|
|
static const bfd_target *
|
|
bfd_mach_o_gen_object_p (bfd *abfd)
|
|
{
|
|
return bfd_mach_o_header_p (abfd, 0, 0, 0);
|
|
}
|
|
|
|
static const bfd_target *
|
|
bfd_mach_o_gen_core_p (bfd *abfd)
|
|
{
|
|
return bfd_mach_o_header_p (abfd, 0, BFD_MACH_O_MH_CORE, 0);
|
|
}
|
|
|
|
/* Return the base address of ABFD, ie the address at which the image is
|
|
mapped. The possible initial pagezero is ignored. */
|
|
|
|
bfd_vma
|
|
bfd_mach_o_get_base_address (bfd *abfd)
|
|
{
|
|
bfd_mach_o_data_struct *mdata;
|
|
bfd_mach_o_load_command *cmd;
|
|
|
|
/* Check for Mach-O. */
|
|
if (!bfd_mach_o_valid (abfd))
|
|
return 0;
|
|
mdata = bfd_mach_o_get_data (abfd);
|
|
|
|
for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
|
|
{
|
|
if ((cmd->type == BFD_MACH_O_LC_SEGMENT
|
|
|| cmd->type == BFD_MACH_O_LC_SEGMENT_64))
|
|
{
|
|
struct bfd_mach_o_segment_command *segcmd = &cmd->command.segment;
|
|
|
|
if (segcmd->initprot != 0)
|
|
return segcmd->vmaddr;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
typedef struct mach_o_fat_archentry
|
|
{
|
|
unsigned long cputype;
|
|
unsigned long cpusubtype;
|
|
unsigned long offset;
|
|
unsigned long size;
|
|
unsigned long align;
|
|
} 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_fat_archive_p (bfd *abfd)
|
|
{
|
|
mach_o_fat_data_struct *adata = NULL;
|
|
struct mach_o_fat_header_external hdr;
|
|
unsigned long i;
|
|
|
|
if (bfd_seek (abfd, 0, SEEK_SET) != 0
|
|
|| bfd_bread (&hdr, sizeof (hdr), abfd) != sizeof (hdr))
|
|
goto error;
|
|
|
|
adata = bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
|
|
if (adata == NULL)
|
|
goto error;
|
|
|
|
adata->magic = bfd_getb32 (hdr.magic);
|
|
adata->nfat_arch = bfd_getb32 (hdr.nfat_arch);
|
|
if (adata->magic != 0xcafebabe)
|
|
goto error;
|
|
/* Avoid matching Java bytecode files, which have the same magic number.
|
|
In the Java bytecode file format this field contains the JVM version,
|
|
which starts at 43.0. */
|
|
if (adata->nfat_arch > 30)
|
|
goto error;
|
|
|
|
adata->archentries =
|
|
bfd_alloc2 (abfd, adata->nfat_arch, sizeof (mach_o_fat_archentry));
|
|
if (adata->archentries == NULL)
|
|
goto error;
|
|
|
|
for (i = 0; i < adata->nfat_arch; i++)
|
|
{
|
|
struct mach_o_fat_arch_external arch;
|
|
if (bfd_bread (&arch, sizeof (arch), abfd) != sizeof (arch))
|
|
goto error;
|
|
adata->archentries[i].cputype = bfd_getb32 (arch.cputype);
|
|
adata->archentries[i].cpusubtype = bfd_getb32 (arch.cpusubtype);
|
|
adata->archentries[i].offset = bfd_getb32 (arch.offset);
|
|
adata->archentries[i].size = bfd_getb32 (arch.size);
|
|
adata->archentries[i].align = bfd_getb32 (arch.align);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
/* Set the filename for a fat binary member ABFD, whose bfd architecture is
|
|
ARCH_TYPE/ARCH_SUBTYPE and corresponding entry in header is ENTRY.
|
|
Set arelt_data and origin fields too. */
|
|
|
|
static void
|
|
bfd_mach_o_fat_member_init (bfd *abfd,
|
|
enum bfd_architecture arch_type,
|
|
unsigned long arch_subtype,
|
|
mach_o_fat_archentry *entry)
|
|
{
|
|
struct areltdata *areltdata;
|
|
/* Create the member filename. Use ARCH_NAME. */
|
|
const bfd_arch_info_type *ap = bfd_lookup_arch (arch_type, arch_subtype);
|
|
|
|
if (ap)
|
|
{
|
|
/* Use the architecture name if known. */
|
|
abfd->filename = xstrdup (ap->printable_name);
|
|
}
|
|
else
|
|
{
|
|
/* Forge a uniq id. */
|
|
const size_t namelen = 2 + 8 + 1 + 2 + 8 + 1;
|
|
char *name = xmalloc (namelen);
|
|
snprintf (name, namelen, "0x%lx-0x%lx",
|
|
entry->cputype, entry->cpusubtype);
|
|
abfd->filename = name;
|
|
}
|
|
|
|
areltdata = bfd_zmalloc (sizeof (struct areltdata));
|
|
areltdata->parsed_size = entry->size;
|
|
abfd->arelt_data = areltdata;
|
|
abfd->iostream = NULL;
|
|
abfd->origin = entry->offset;
|
|
}
|
|
|
|
bfd *
|
|
bfd_mach_o_fat_openr_next_archived_file (bfd *archive, bfd *prev)
|
|
{
|
|
mach_o_fat_data_struct *adata;
|
|
mach_o_fat_archentry *entry = NULL;
|
|
unsigned long i;
|
|
bfd *nbfd;
|
|
enum bfd_architecture arch_type;
|
|
unsigned long arch_subtype;
|
|
|
|
adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data;
|
|
BFD_ASSERT (adata != NULL);
|
|
|
|
/* Find index of previous entry. */
|
|
if (prev == NULL)
|
|
{
|
|
/* Start at first one. */
|
|
i = 0;
|
|
}
|
|
else
|
|
{
|
|
/* Find index of PREV. */
|
|
for (i = 0; i < adata->nfat_arch; i++)
|
|
{
|
|
if (adata->archentries[i].offset == prev->origin)
|
|
break;
|
|
}
|
|
|
|
if (i == adata->nfat_arch)
|
|
{
|
|
/* Not found. */
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return NULL;
|
|
}
|
|
|
|
/* Get next entry. */
|
|
i++;
|
|
}
|
|
|
|
if (i >= adata->nfat_arch)
|
|
{
|
|
bfd_set_error (bfd_error_no_more_archived_files);
|
|
return NULL;
|
|
}
|
|
|
|
entry = &adata->archentries[i];
|
|
nbfd = _bfd_new_bfd_contained_in (archive);
|
|
if (nbfd == NULL)
|
|
return NULL;
|
|
|
|
bfd_mach_o_convert_architecture (entry->cputype, entry->cpusubtype,
|
|
&arch_type, &arch_subtype);
|
|
|
|
bfd_mach_o_fat_member_init (nbfd, arch_type, arch_subtype, entry);
|
|
|
|
bfd_set_arch_mach (nbfd, arch_type, arch_subtype);
|
|
|
|
return nbfd;
|
|
}
|
|
|
|
/* Analogous to stat call. */
|
|
|
|
static int
|
|
bfd_mach_o_fat_stat_arch_elt (bfd *abfd, struct stat *buf)
|
|
{
|
|
if (abfd->arelt_data == NULL)
|
|
{
|
|
bfd_set_error (bfd_error_invalid_operation);
|
|
return -1;
|
|
}
|
|
|
|
buf->st_mtime = 0;
|
|
buf->st_uid = 0;
|
|
buf->st_gid = 0;
|
|
buf->st_mode = 0644;
|
|
buf->st_size = arelt_size (abfd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* If ABFD format is FORMAT and architecture is ARCH, return it.
|
|
If ABFD is a fat image containing a member that corresponds to FORMAT
|
|
and ARCH, returns it.
|
|
In other case, returns NULL.
|
|
This function allows transparent uses of fat images. */
|
|
|
|
bfd *
|
|
bfd_mach_o_fat_extract (bfd *abfd,
|
|
bfd_format format,
|
|
const bfd_arch_info_type *arch)
|
|
{
|
|
bfd *res;
|
|
mach_o_fat_data_struct *adata;
|
|
unsigned int i;
|
|
|
|
if (bfd_check_format (abfd, format))
|
|
{
|
|
if (bfd_get_arch_info (abfd) == arch)
|
|
return abfd;
|
|
return NULL;
|
|
}
|
|
if (!bfd_check_format (abfd, bfd_archive)
|
|
|| abfd->xvec != &mach_o_fat_vec)
|
|
return NULL;
|
|
|
|
/* This is a Mach-O fat image. */
|
|
adata = (mach_o_fat_data_struct *) abfd->tdata.mach_o_fat_data;
|
|
BFD_ASSERT (adata != NULL);
|
|
|
|
for (i = 0; i < adata->nfat_arch; i++)
|
|
{
|
|
struct mach_o_fat_archentry *e = &adata->archentries[i];
|
|
enum bfd_architecture cpu_type;
|
|
unsigned long cpu_subtype;
|
|
|
|
bfd_mach_o_convert_architecture (e->cputype, e->cpusubtype,
|
|
&cpu_type, &cpu_subtype);
|
|
if (cpu_type != arch->arch || cpu_subtype != arch->mach)
|
|
continue;
|
|
|
|
/* The architecture is found. */
|
|
res = _bfd_new_bfd_contained_in (abfd);
|
|
if (res == NULL)
|
|
return NULL;
|
|
|
|
bfd_mach_o_fat_member_init (res, cpu_type, cpu_subtype, e);
|
|
|
|
if (bfd_check_format (res, format))
|
|
{
|
|
BFD_ASSERT (bfd_get_arch_info (res) == arch);
|
|
return res;
|
|
}
|
|
bfd_close (res);
|
|
return NULL;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
int
|
|
bfd_mach_o_lookup_command (bfd *abfd,
|
|
bfd_mach_o_load_command_type type,
|
|
bfd_mach_o_load_command **mcommand)
|
|
{
|
|
struct mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
struct bfd_mach_o_load_command *cmd;
|
|
unsigned int num;
|
|
|
|
BFD_ASSERT (mdata != NULL);
|
|
BFD_ASSERT (mcommand != NULL);
|
|
|
|
num = 0;
|
|
for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
|
|
{
|
|
if (cmd->type != type)
|
|
continue;
|
|
|
|
if (num == 0)
|
|
*mcommand = cmd;
|
|
num++;
|
|
}
|
|
|
|
return num;
|
|
}
|
|
|
|
unsigned long
|
|
bfd_mach_o_stack_addr (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;
|
|
}
|
|
}
|
|
|
|
/* The following two tables should be kept, as far as possible, in order of
|
|
most frequently used entries to optimize their use from gas. */
|
|
|
|
const bfd_mach_o_xlat_name bfd_mach_o_section_type_name[] =
|
|
{
|
|
{ "regular", BFD_MACH_O_S_REGULAR},
|
|
{ "coalesced", BFD_MACH_O_S_COALESCED},
|
|
{ "zerofill", BFD_MACH_O_S_ZEROFILL},
|
|
{ "cstring_literals", BFD_MACH_O_S_CSTRING_LITERALS},
|
|
{ "4byte_literals", BFD_MACH_O_S_4BYTE_LITERALS},
|
|
{ "8byte_literals", BFD_MACH_O_S_8BYTE_LITERALS},
|
|
{ "16byte_literals", BFD_MACH_O_S_16BYTE_LITERALS},
|
|
{ "literal_pointers", BFD_MACH_O_S_LITERAL_POINTERS},
|
|
{ "mod_init_func_pointers", BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS},
|
|
{ "mod_fini_func_pointers", BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS},
|
|
{ "gb_zerofill", BFD_MACH_O_S_GB_ZEROFILL},
|
|
{ "interposing", BFD_MACH_O_S_INTERPOSING},
|
|
{ "dtrace_dof", BFD_MACH_O_S_DTRACE_DOF},
|
|
{ "non_lazy_symbol_pointers", BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS},
|
|
{ "lazy_symbol_pointers", BFD_MACH_O_S_LAZY_SYMBOL_POINTERS},
|
|
{ "symbol_stubs", BFD_MACH_O_S_SYMBOL_STUBS},
|
|
{ "lazy_dylib_symbol_pointers", BFD_MACH_O_S_LAZY_DYLIB_SYMBOL_POINTERS},
|
|
{ NULL, 0}
|
|
};
|
|
|
|
const bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name[] =
|
|
{
|
|
{ "pure_instructions", BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS },
|
|
{ "some_instructions", BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS },
|
|
{ "loc_reloc", BFD_MACH_O_S_ATTR_LOC_RELOC },
|
|
{ "ext_reloc", BFD_MACH_O_S_ATTR_EXT_RELOC },
|
|
{ "debug", BFD_MACH_O_S_ATTR_DEBUG },
|
|
{ "live_support", BFD_MACH_O_S_ATTR_LIVE_SUPPORT },
|
|
{ "no_dead_strip", BFD_MACH_O_S_ATTR_NO_DEAD_STRIP },
|
|
{ "strip_static_syms", BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS },
|
|
{ "no_toc", BFD_MACH_O_S_ATTR_NO_TOC },
|
|
{ "self_modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
|
|
{ "modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
|
|
{ NULL, 0}
|
|
};
|
|
|
|
/* Get the section type from NAME. Return 256 if NAME is unknown. */
|
|
|
|
unsigned int
|
|
bfd_mach_o_get_section_type_from_name (bfd *abfd, const char *name)
|
|
{
|
|
const bfd_mach_o_xlat_name *x;
|
|
bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
|
|
|
|
for (x = bfd_mach_o_section_type_name; x->name; x++)
|
|
if (strcmp (x->name, name) == 0)
|
|
{
|
|
/* We found it... does the target support it? */
|
|
if (bed->bfd_mach_o_section_type_valid_for_target == NULL
|
|
|| bed->bfd_mach_o_section_type_valid_for_target (x->val))
|
|
return x->val; /* OK. */
|
|
else
|
|
break; /* Not supported. */
|
|
}
|
|
/* Maximum section ID = 0xff. */
|
|
return 256;
|
|
}
|
|
|
|
/* Get the section attribute from NAME. Return -1 if NAME is unknown. */
|
|
|
|
unsigned int
|
|
bfd_mach_o_get_section_attribute_from_name (const char *name)
|
|
{
|
|
const bfd_mach_o_xlat_name *x;
|
|
|
|
for (x = bfd_mach_o_section_attribute_name; x->name; x++)
|
|
if (strcmp (x->name, name) == 0)
|
|
return x->val;
|
|
return (unsigned int)-1;
|
|
}
|
|
|
|
int
|
|
bfd_mach_o_core_fetch_environment (bfd *abfd,
|
|
unsigned char **rbuf,
|
|
unsigned int *rlen)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype);
|
|
bfd_mach_o_load_command *cmd;
|
|
|
|
for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
|
|
{
|
|
bfd_mach_o_segment_command *seg;
|
|
|
|
if (cmd->type != BFD_MACH_O_LC_SEGMENT)
|
|
continue;
|
|
|
|
seg = &cmd->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_or_free (buf, size);
|
|
if (buf == NULL)
|
|
return -1;
|
|
|
|
if (bfd_seek (abfd, end - size, SEEK_SET) != 0)
|
|
{
|
|
free (buf);
|
|
return -1;
|
|
}
|
|
|
|
nread = bfd_bread (buf, size, abfd);
|
|
|
|
if (nread != size)
|
|
{
|
|
free (buf);
|
|
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);
|
|
free (buf);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (size == (end - start))
|
|
break;
|
|
|
|
size *= 2;
|
|
}
|
|
|
|
free (buf);
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
char *
|
|
bfd_mach_o_core_file_failing_command (bfd *abfd)
|
|
{
|
|
unsigned char *buf = NULL;
|
|
unsigned int len = 0;
|
|
int ret;
|
|
|
|
ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len);
|
|
if (ret < 0)
|
|
return NULL;
|
|
|
|
return (char *) buf;
|
|
}
|
|
|
|
int
|
|
bfd_mach_o_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static bfd_mach_o_uuid_command *
|
|
bfd_mach_o_lookup_uuid_command (bfd *abfd)
|
|
{
|
|
bfd_mach_o_load_command *uuid_cmd;
|
|
int ncmd = bfd_mach_o_lookup_command (abfd, BFD_MACH_O_LC_UUID, &uuid_cmd);
|
|
if (ncmd != 1)
|
|
return FALSE;
|
|
return &uuid_cmd->command.uuid;
|
|
}
|
|
|
|
/* Return true if ABFD is a dSYM file and its UUID matches UUID_CMD. */
|
|
|
|
static bfd_boolean
|
|
bfd_mach_o_dsym_for_uuid_p (bfd *abfd, const bfd_mach_o_uuid_command *uuid_cmd)
|
|
{
|
|
bfd_mach_o_uuid_command *dsym_uuid_cmd;
|
|
|
|
BFD_ASSERT (abfd);
|
|
BFD_ASSERT (uuid_cmd);
|
|
|
|
if (!bfd_check_format (abfd, bfd_object))
|
|
return FALSE;
|
|
|
|
if (bfd_get_flavour (abfd) != bfd_target_mach_o_flavour
|
|
|| bfd_mach_o_get_data (abfd) == NULL
|
|
|| bfd_mach_o_get_data (abfd)->header.filetype != BFD_MACH_O_MH_DSYM)
|
|
return FALSE;
|
|
|
|
dsym_uuid_cmd = bfd_mach_o_lookup_uuid_command (abfd);
|
|
if (dsym_uuid_cmd == NULL)
|
|
return FALSE;
|
|
|
|
if (memcmp (uuid_cmd->uuid, dsym_uuid_cmd->uuid,
|
|
sizeof (uuid_cmd->uuid)) != 0)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Find a BFD in DSYM_FILENAME which matches ARCH and UUID_CMD.
|
|
The caller is responsible for closing the returned BFD object and
|
|
its my_archive if the returned BFD is in a fat dSYM. */
|
|
|
|
static bfd *
|
|
bfd_mach_o_find_dsym (const char *dsym_filename,
|
|
const bfd_mach_o_uuid_command *uuid_cmd,
|
|
const bfd_arch_info_type *arch)
|
|
{
|
|
bfd *base_dsym_bfd, *dsym_bfd;
|
|
|
|
BFD_ASSERT (uuid_cmd);
|
|
|
|
base_dsym_bfd = bfd_openr (dsym_filename, NULL);
|
|
if (base_dsym_bfd == NULL)
|
|
return NULL;
|
|
|
|
dsym_bfd = bfd_mach_o_fat_extract (base_dsym_bfd, bfd_object, arch);
|
|
if (bfd_mach_o_dsym_for_uuid_p (dsym_bfd, uuid_cmd))
|
|
return dsym_bfd;
|
|
|
|
bfd_close (dsym_bfd);
|
|
if (base_dsym_bfd != dsym_bfd)
|
|
bfd_close (base_dsym_bfd);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Return a BFD created from a dSYM file for ABFD.
|
|
The caller is responsible for closing the returned BFD object, its
|
|
filename, and its my_archive if the returned BFD is in a fat dSYM. */
|
|
|
|
static bfd *
|
|
bfd_mach_o_follow_dsym (bfd *abfd)
|
|
{
|
|
char *dsym_filename;
|
|
bfd_mach_o_uuid_command *uuid_cmd;
|
|
bfd *dsym_bfd, *base_bfd = abfd;
|
|
const char *base_basename;
|
|
|
|
if (abfd == NULL || bfd_get_flavour (abfd) != bfd_target_mach_o_flavour)
|
|
return NULL;
|
|
|
|
if (abfd->my_archive && !bfd_is_thin_archive (abfd->my_archive))
|
|
base_bfd = abfd->my_archive;
|
|
/* BFD may have been opened from a stream. */
|
|
if (base_bfd->filename == NULL)
|
|
{
|
|
bfd_set_error (bfd_error_invalid_operation);
|
|
return NULL;
|
|
}
|
|
base_basename = lbasename (base_bfd->filename);
|
|
|
|
uuid_cmd = bfd_mach_o_lookup_uuid_command (abfd);
|
|
if (uuid_cmd == NULL)
|
|
return NULL;
|
|
|
|
/* TODO: We assume the DWARF file has the same as the binary's.
|
|
It seems apple's GDB checks all files in the dSYM bundle directory.
|
|
http://opensource.apple.com/source/gdb/gdb-1708/src/gdb/macosx/macosx-tdep.c
|
|
*/
|
|
dsym_filename = (char *)bfd_malloc (strlen (base_bfd->filename)
|
|
+ strlen (dsym_subdir) + 1
|
|
+ strlen (base_basename) + 1);
|
|
sprintf (dsym_filename, "%s%s/%s",
|
|
base_bfd->filename, dsym_subdir, base_basename);
|
|
|
|
dsym_bfd = bfd_mach_o_find_dsym (dsym_filename, uuid_cmd,
|
|
bfd_get_arch_info (abfd));
|
|
if (dsym_bfd == NULL)
|
|
free (dsym_filename);
|
|
|
|
return dsym_bfd;
|
|
}
|
|
|
|
bfd_boolean
|
|
bfd_mach_o_find_nearest_line (bfd *abfd,
|
|
asymbol **symbols,
|
|
asection *section,
|
|
bfd_vma offset,
|
|
const char **filename_ptr,
|
|
const char **functionname_ptr,
|
|
unsigned int *line_ptr,
|
|
unsigned int *discriminator_ptr)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
if (mdata == NULL)
|
|
return FALSE;
|
|
switch (mdata->header.filetype)
|
|
{
|
|
case BFD_MACH_O_MH_OBJECT:
|
|
break;
|
|
case BFD_MACH_O_MH_EXECUTE:
|
|
case BFD_MACH_O_MH_DYLIB:
|
|
case BFD_MACH_O_MH_BUNDLE:
|
|
case BFD_MACH_O_MH_KEXT_BUNDLE:
|
|
if (mdata->dwarf2_find_line_info == NULL)
|
|
{
|
|
mdata->dsym_bfd = bfd_mach_o_follow_dsym (abfd);
|
|
/* When we couldn't find dSYM for this binary, we look for
|
|
the debug information in the binary itself. In this way,
|
|
we won't try finding separated dSYM again because
|
|
mdata->dwarf2_find_line_info will be filled. */
|
|
if (! mdata->dsym_bfd)
|
|
break;
|
|
if (! _bfd_dwarf2_slurp_debug_info (abfd, mdata->dsym_bfd,
|
|
dwarf_debug_sections, symbols,
|
|
&mdata->dwarf2_find_line_info,
|
|
FALSE))
|
|
return FALSE;
|
|
}
|
|
break;
|
|
default:
|
|
return FALSE;
|
|
}
|
|
return _bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset,
|
|
filename_ptr, functionname_ptr,
|
|
line_ptr, discriminator_ptr,
|
|
dwarf_debug_sections, 0,
|
|
&mdata->dwarf2_find_line_info);
|
|
}
|
|
|
|
bfd_boolean
|
|
bfd_mach_o_close_and_cleanup (bfd *abfd)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
if (bfd_get_format (abfd) == bfd_object && mdata != NULL)
|
|
{
|
|
_bfd_dwarf2_cleanup_debug_info (abfd, &mdata->dwarf2_find_line_info);
|
|
bfd_mach_o_free_cached_info (abfd);
|
|
if (mdata->dsym_bfd != NULL)
|
|
{
|
|
bfd *fat_bfd = mdata->dsym_bfd->my_archive;
|
|
#if 0
|
|
/* FIXME: PR 19435: This calculation to find the memory allocated by
|
|
bfd_mach_o_follow_dsym for the filename does not always end up
|
|
selecting the correct pointer. Unfortunately this problem is
|
|
very hard to reproduce on a non Mach-O native system, so until it
|
|
can be traced and fixed on such a system, this code will remain
|
|
commented out. This does mean that there will be a memory leak,
|
|
but it is small, and happens when we are closing down, so it
|
|
should not matter too much. */
|
|
char *dsym_filename = (char *)(fat_bfd
|
|
? fat_bfd->filename
|
|
: mdata->dsym_bfd->filename);
|
|
#endif
|
|
bfd_close (mdata->dsym_bfd);
|
|
mdata->dsym_bfd = NULL;
|
|
if (fat_bfd)
|
|
bfd_close (fat_bfd);
|
|
#if 0
|
|
free (dsym_filename);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
return _bfd_generic_close_and_cleanup (abfd);
|
|
}
|
|
|
|
bfd_boolean bfd_mach_o_free_cached_info (bfd *abfd)
|
|
{
|
|
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
|
asection *asect;
|
|
free (mdata->dyn_reloc_cache);
|
|
mdata->dyn_reloc_cache = NULL;
|
|
for (asect = abfd->sections; asect != NULL; asect = asect->next)
|
|
{
|
|
free (asect->relocation);
|
|
asect->relocation = NULL;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
|
|
#define bfd_mach_o_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
|
|
|
|
#define bfd_mach_o_canonicalize_one_reloc NULL
|
|
#define bfd_mach_o_swap_reloc_out NULL
|
|
#define bfd_mach_o_print_thread NULL
|
|
#define bfd_mach_o_tgt_seg_table NULL
|
|
#define bfd_mach_o_section_type_valid_for_tgt NULL
|
|
|
|
#define TARGET_NAME mach_o_be_vec
|
|
#define TARGET_STRING "mach-o-be"
|
|
#define TARGET_ARCHITECTURE bfd_arch_unknown
|
|
#define TARGET_PAGESIZE 1
|
|
#define TARGET_BIG_ENDIAN 1
|
|
#define TARGET_ARCHIVE 0
|
|
#define TARGET_PRIORITY 1
|
|
#include "mach-o-target.c"
|
|
|
|
#undef TARGET_NAME
|
|
#undef TARGET_STRING
|
|
#undef TARGET_ARCHITECTURE
|
|
#undef TARGET_PAGESIZE
|
|
#undef TARGET_BIG_ENDIAN
|
|
#undef TARGET_ARCHIVE
|
|
#undef TARGET_PRIORITY
|
|
|
|
#define TARGET_NAME mach_o_le_vec
|
|
#define TARGET_STRING "mach-o-le"
|
|
#define TARGET_ARCHITECTURE bfd_arch_unknown
|
|
#define TARGET_PAGESIZE 1
|
|
#define TARGET_BIG_ENDIAN 0
|
|
#define TARGET_ARCHIVE 0
|
|
#define TARGET_PRIORITY 1
|
|
|
|
#include "mach-o-target.c"
|
|
|
|
#undef TARGET_NAME
|
|
#undef TARGET_STRING
|
|
#undef TARGET_ARCHITECTURE
|
|
#undef TARGET_PAGESIZE
|
|
#undef TARGET_BIG_ENDIAN
|
|
#undef TARGET_ARCHIVE
|
|
#undef TARGET_PRIORITY
|
|
|
|
/* Not yet handled: creating an archive. */
|
|
#define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive
|
|
|
|
#define bfd_mach_o_close_and_cleanup bfd_true
|
|
|
|
/* Not used. */
|
|
#define bfd_mach_o_generic_stat_arch_elt bfd_mach_o_fat_stat_arch_elt
|
|
#define bfd_mach_o_openr_next_archived_file bfd_mach_o_fat_openr_next_archived_file
|
|
#define bfd_mach_o_archive_p bfd_mach_o_fat_archive_p
|
|
|
|
#define TARGET_NAME mach_o_fat_vec
|
|
#define TARGET_STRING "mach-o-fat"
|
|
#define TARGET_ARCHITECTURE bfd_arch_unknown
|
|
#define TARGET_PAGESIZE 1
|
|
#define TARGET_BIG_ENDIAN 1
|
|
#define TARGET_ARCHIVE 1
|
|
#define TARGET_PRIORITY 0
|
|
|
|
#include "mach-o-target.c"
|
|
|
|
#undef TARGET_NAME
|
|
#undef TARGET_STRING
|
|
#undef TARGET_ARCHITECTURE
|
|
#undef TARGET_PAGESIZE
|
|
#undef TARGET_BIG_ENDIAN
|
|
#undef TARGET_ARCHIVE
|
|
#undef TARGET_PRIORITY
|