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1ff6de0312
This is quite complicated because the CTF section's contents depend on
the final contents of the symtab and strtab, because it has two sections
whose contents are shuffled to be in 1:1 correspondence with the symtab,
and an internal strtab that gets deduplicated against the ELF strtab
(with offsets adjusted to point into the ELF strtab instead). It is
also compressed if large enough, so its size depends on its contents!
So we cannot construct it as early as most sections: we cannot even
*begin* construction until after the symtab and strtab are finalized.
Thankfully there is already one section treated similarly: compressed
debugging sections: the only differences are that compressed debugging
sections have extra handling to deal with their changing name if
compressed (CTF sections are always called ".ctf" for now, though we
have reserved ".ctf.*" against future use), and that compressed
debugging sections have previously-uncompressed content which has to be
stashed away for later compression, while CTF sections have no content
at all until we generate it (very late).
BFD also cannot do the link itself: libctf knows how to do it, and BFD
cannot call libctf directly because libctf already depends on bfd for
file I/O. So we have to use a pair of callbacks, one, examine_strtab,
which allows a caller to examine the symtab and strtab after
finalization (called from elf_link_swap_symbols_out(), right before the
symtabs are written, and after the strtab has been finalized), and one
which actually does the emission (called emit_ctf simply because it is
grouped with a bunch of section-specific late-emission function calls at
the bottom of bfd_elf_final_link, and a section-specific name seems best
for that). emit_ctf is actually called *twice*: once from lang_process
if the emulation suggests that this bfd target does not examine the
symtab or strtab, and once via a bfd callback if it does. (This means
that non-ELF targets still get CTF emitted, even though the late CTF
emission stage is never called for them).
v2: merged with non-ELF support patch: slight commit message
adjustments.
v3: do not spend time merging CTF, or crash, if the CTF section is
explicitly discarded. Do not try to merge or compress CTF unless
linking.
v4: add CTF_COMPRESSION_THRESHOLD. Annul the freed input ctf_file_t's
after writeout: set SEC_IN_MEMORY on the output contents so a future
bfd enhancement knows it could free it. Add SEC_LINKER_CREATED |
SEC_KEEP to avoid having to add .ctf to the linker script. Drop
now-unnecessary ldlang.h-level elf-bfd.h include and hackery around
it. Adapt to elf32.em->elf.em and elf-generic.em->ldelf*.c
changes.
v5: fix tabdamage. Drop #inclusions in .h files: include in .c files,
.em files, and use struct forwards instead. Use bfd_section_is_ctf
inline function rather than SECTION_IS_CTF macro. Move a few
comments.
* Makefile.def (dependencies): all-ld depends on all-libctf.
* Makefile.in: Regenerated.
include/
* bfdlink.h (elf_strtab_hash): New forward.
(elf_sym_strtab): Likewise.
(struct bfd_link_callbacks <examine_strtab>): New.
(struct bfd_link_callbacks <emit_ctf>): Likewise.
bfd/
* elf-bfd.h (bfd_section_is_ctf): New inline function.
* elf.c (special_sections_c): Add ".ctf".
(assign_file_positions_for_non_load_sections): Note that
compressed debugging sections etc are not assigned here. Treat
CTF sections like SEC_ELF_COMPRESS sections when is_linker_output:
sh_offset -1.
(assign_file_positions_except_relocs): Likewise.
(find_section_in_list): Note that debugging and CTF sections, as
well as reloc sections, are assigned later.
(_bfd_elf_assign_file_positions_for_non_load): CTF sections get
their size and contents updated.
(_bfd_elf_set_section_contents): Skip CTF sections: unlike
compressed sections, they have no uncompressed content to copy at
this stage.
* elflink.c (elf_link_swap_symbols_out): Call the examine_strtab
callback right before the strtab is written out.
(bfd_elf_final_link): Don't cache the section contents of CTF
sections: they are not populated yet. Call the emit_ctf callback
right at the end, after all the symbols and strings are flushed
out.
ld/
* ldlang.h: (struct lang_input_statement_struct): Add the_ctf.
(struct elf_sym_strtab): Add forward.
(struct elf_strtab_hash): Likewise.
(ldlang_ctf_apply_strsym): Declare.
(ldlang_write_ctf_late): Likewise.
* ldemul.h (ldemul_emit_ctf_early): New.
(ldemul_examine_strtab_for_ctf): Likewise.
(ld_emulation_xfer_type) <emit_ctf_early>: Likewise.
(ld_emulation_xfer_type) <examine_strtab_for_ctf>: Likewise.
* ldemul.c (ldemul_emit_ctf_early): New.
(ldemul_examine_strtab_for_ctf): Likewise.
* ldlang.c: Include ctf-api.h.
(CTF_COMPRESSION_THRESHOLD): New.
(ctf_output): New. Initialized in...
(ldlang_open_ctf): ... this new function. Open all the CTF
sections in the input files: mark them non-loaded and empty
so as not to copy their contents to the output, but linker-created
so the section gets created in the target.
(ldlang_merge_ctf): New, merge types via ctf_link_add_ctf and
ctf_link.
(ldlang_ctf_apply_strsym): New, an examine_strtab callback: wrap
ldemul_examine_strtab_for_ctf.
(lang_write_ctf): New, write out the CTF section.
(ldlang_write_ctf_late): New, late call via bfd's emit_ctf hook.
(lang_process): Call ldlang_open_ctf, ldlang_merge_ctf, and
lang_write_ctf.
* ldmain.c (link_callbacks): Add ldlang_ctf_apply_strsym,
ldlang_write_ctf_late.
* emultempl/aix.em: Add ctf-api.h.
* emultempl/armcoff.em: Likewise.
* emultempl/beos.em: Likewise.
* emultempl/elf.em: Likewise.
* emultempl/generic.em: Likewise.
* emultempl/linux.em: Likewise.
* emultempl/msp430.em: Likewise.
* emultempl/pe.em: Likewise.
* emultempl/pep.em: Likewise.
* emultempl/ticoff.em: Likewise.
* emultempl/vanilla.em: Likewise.
* ldcref.c: Likewise.
* ldctor.c: Likewise.
* ldelf.c: Likewise.
* ldelfgen.c: Likewise.
* ldemul.c: Likewise.
* ldexp.c: Likewise.
* ldfile.c: Likewise.
* ldgram.c: Likewise.
* ldlex.l: Likewise.
* ldmain.c: Likewise.
* ldmisc.c: Likewise.
* ldver.c: Likewise.
* ldwrite.c: Likewise.
* lexsup.c: Likewise.
* mri.c: Likewise.
* pe-dll.c: Likewise.
* plugin.c: Likewise.
* ldelfgen.c (ldelf_emit_ctf_early): New.
(ldelf_examine_strtab_for_ctf): tell libctf about the symtab and
strtab.
(struct ctf_strsym_iter_cb_arg): New, state to do so.
(ldelf_ctf_strtab_iter_cb): New: tell libctf about
each string in the strtab in turn.
(ldelf_ctf_symbols_iter_cb): New, tell libctf
about each symbol in the symtab in turn.
* ldelfgen.h (struct elf_sym_strtab): Add forward.
(struct elf_strtab_hash): Likewise.
(struct ctf_file): Likewise.
(ldelf_emit_ctf_early): Declare.
(ldelf_examine_strtab_for_ctf): Likewise.
* emultempl/elf-generic.em (LDEMUL_EMIT_CTF_EARLY): Set it.
(LDEMUL_EXAMINE_STRTAB_FOR_CTF): Likewise.
* emultempl/aix.em (ld_${EMULATION_NAME}_emulation): Add
emit_ctf_early and examine_strtab_for_ctf, NULL by default.
* emultempl/armcoff.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/beos.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/elf.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/generic.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/linux.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/msp430.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/pe.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/pep.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/ticoff.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/vanilla.em (ld_vanilla_emulation): Likewise.
* Makefile.am: Pull in libctf (and zlib, a transitive requirement
for compressed CTF section emission). Pass it on to DejaGNU.
* configure.ac: Add AM_ZLIB.
* aclocal.m4: Added zlib.m4.
* Makefile.in: Regenerated.
* testsuite/ld-bootstrap/bootstrap.exp: Use it when relinking ld.
2375 lines
75 KiB
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2375 lines
75 KiB
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# This shell script emits a C file. -*- C -*-
|
||
# It does some substitutions.
|
||
if [ -z "$MACHINE" ]; then
|
||
OUTPUT_ARCH=${ARCH}
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else
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OUTPUT_ARCH=${ARCH}:${MACHINE}
|
||
fi
|
||
rm -f e${EMULATION_NAME}.c
|
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(echo;echo;echo;echo;echo)>e${EMULATION_NAME}.c # there, now line numbers match ;-)
|
||
fragment <<EOF
|
||
/* Copyright (C) 1995-2019 Free Software Foundation, Inc.
|
||
|
||
This file is part of the GNU Binutils.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 3 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software
|
||
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
||
MA 02110-1301, USA. */
|
||
|
||
|
||
/* For WINDOWS_NT */
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/* The original file generated returned different default scripts depending
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||
on whether certain switches were set, but these switches pertain to the
|
||
Linux system and that particular version of coff. In the NT case, we
|
||
only determine if the subsystem is console or windows in order to select
|
||
the correct entry point by default. */
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||
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#define TARGET_IS_${EMULATION_NAME}
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|
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#include "sysdep.h"
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#include "bfd.h"
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#include "bfdlink.h"
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#include "ctf-api.h"
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#include "getopt.h"
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||
#include "libiberty.h"
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||
#include "filenames.h"
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#include "ld.h"
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#include "ldmain.h"
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#include "ldexp.h"
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#include "ldlang.h"
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||
#include "ldfile.h"
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#include "ldemul.h"
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#include <ldgram.h>
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#include "ldlex.h"
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#include "ldmisc.h"
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||
#include "ldctor.h"
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#include "ldbuildid.h"
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||
#include "coff/internal.h"
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||
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/* FIXME: See bfd/peXXigen.c for why we include an architecture specific
|
||
header in generic PE code. */
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#include "coff/i386.h"
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#include "coff/pe.h"
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/* FIXME: These are BFD internal header files, and we should not be
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using it here. */
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#include "../bfd/libcoff.h"
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#include "../bfd/libpei.h"
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#if defined(TARGET_IS_armpe) \
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|| defined(TARGET_IS_arm_wince_pe)
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#define bfd_arm_allocate_interworking_sections \
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bfd_${EMULATION_NAME}_allocate_interworking_sections
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#define bfd_arm_get_bfd_for_interworking \
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bfd_${EMULATION_NAME}_get_bfd_for_interworking
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#define bfd_arm_process_before_allocation \
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bfd_${EMULATION_NAME}_process_before_allocation
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#include "coff-arm.h"
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#endif
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#include "deffile.h"
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#include "pe-dll.h"
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#include "safe-ctype.h"
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/* Permit the emulation parameters to override the default section
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alignment by setting OVERRIDE_SECTION_ALIGNMENT. FIXME: This makes
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it seem that include/coff/internal.h should not define
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PE_DEF_SECTION_ALIGNMENT. */
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#if PE_DEF_SECTION_ALIGNMENT != ${OVERRIDE_SECTION_ALIGNMENT:-PE_DEF_SECTION_ALIGNMENT}
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#undef PE_DEF_SECTION_ALIGNMENT
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#define PE_DEF_SECTION_ALIGNMENT ${OVERRIDE_SECTION_ALIGNMENT}
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#endif
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#if defined(TARGET_IS_i386pe) \
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|| defined(TARGET_IS_shpe) \
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|| defined(TARGET_IS_armpe) \
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|| defined(TARGET_IS_arm_wince_pe)
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#define DLL_SUPPORT
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#endif
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||
|
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#if defined(TARGET_IS_i386pe)
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#define DEFAULT_PSEUDO_RELOC_VERSION 2
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#else
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#define DEFAULT_PSEUDO_RELOC_VERSION 1
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#endif
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||
|
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#if defined(TARGET_IS_i386pe) || ! defined(DLL_SUPPORT)
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#define PE_DEF_SUBSYSTEM 3
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#else
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#undef NT_EXE_IMAGE_BASE
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#undef PE_DEF_SECTION_ALIGNMENT
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#undef PE_DEF_FILE_ALIGNMENT
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#define NT_EXE_IMAGE_BASE 0x00010000
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|
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#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
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#define PE_DEF_SECTION_ALIGNMENT 0x00001000
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#define PE_DEF_SUBSYSTEM 9
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#else
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#define PE_DEF_SECTION_ALIGNMENT 0x00000400
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#define PE_DEF_SUBSYSTEM 2
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#endif
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#define PE_DEF_FILE_ALIGNMENT 0x00000200
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#endif
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||
|
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static struct internal_extra_pe_aouthdr pe;
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static int dll;
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static int pe_subsystem = ${SUBSYSTEM};
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static flagword real_flags = 0;
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static int support_old_code = 0;
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static char * thumb_entry_symbol = NULL;
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static lang_assignment_statement_type *image_base_statement = 0;
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static unsigned short pe_dll_characteristics = 0;
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static bfd_boolean insert_timestamp = TRUE;
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static const char *emit_build_id;
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|
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#ifdef DLL_SUPPORT
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static int pe_enable_stdcall_fixup = -1; /* 0=disable 1=enable. */
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static char *pe_out_def_filename = NULL;
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static int pe_enable_auto_image_base = 0;
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static unsigned long pe_auto_image_base = 0x61500000;
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static char *pe_dll_search_prefix = NULL;
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#endif
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extern const char *output_filename;
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|
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static int is_underscoring (void)
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{
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int u = 0;
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if (pe_leading_underscore != -1)
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return pe_leading_underscore;
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if (!bfd_get_target_info ("${OUTPUT_FORMAT}", NULL, NULL, &u, NULL))
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bfd_get_target_info ("${RELOCATEABLE_OUTPUT_FORMAT}", NULL, NULL, &u, NULL);
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if (u == -1)
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abort ();
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pe_leading_underscore = (u != 0 ? 1 : 0);
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return pe_leading_underscore;
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}
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static void
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gld_${EMULATION_NAME}_before_parse (void)
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{
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is_underscoring ();
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ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
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output_filename = "${EXECUTABLE_NAME:-a.exe}";
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#ifdef DLL_SUPPORT
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input_flags.dynamic = TRUE;
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config.has_shared = 1;
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EOF
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# Cygwin no longer wants these noisy warnings. Other PE
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# targets might like to consider adding themselves here.
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# See also the mail thread starting here for the reason why
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# merge_rdata defaults to 0 for cygwin:
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# http://cygwin.com/ml/cygwin-apps/2013-04/msg00187.html
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case ${target} in
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*-*-cygwin*)
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default_auto_import=1
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default_merge_rdata=0
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;;
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i[3-7]86-*-mingw* | x86_64-*-mingw*)
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default_auto_import=1
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default_merge_rdata=0
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;;
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*)
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default_auto_import=-1
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default_merge_rdata=1
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;;
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esac
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fragment <<EOF
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||
link_info.pei386_auto_import = ${default_auto_import};
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/* Use by default version. */
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link_info.pei386_runtime_pseudo_reloc = DEFAULT_PSEUDO_RELOC_VERSION;
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#endif
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}
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/* Indicates if RDATA shall be merged into DATA when pseudo-relocation
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version 2 is used and auto-import is enabled. */
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#define MERGE_RDATA_V2 ${default_merge_rdata}
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|
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/* PE format extra command line options. */
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|
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/* Used for setting flags in the PE header. */
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#define OPTION_BASE_FILE (300 + 1)
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#define OPTION_DLL (OPTION_BASE_FILE + 1)
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#define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1)
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#define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1)
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#define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1)
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#define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1)
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#define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1)
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#define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1)
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#define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1)
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#define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1)
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#define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1)
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#define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1)
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#define OPTION_SUBSYSTEM (OPTION_STACK + 1)
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#define OPTION_HEAP (OPTION_SUBSYSTEM + 1)
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#define OPTION_SUPPORT_OLD_CODE (OPTION_HEAP + 1)
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#define OPTION_OUT_DEF (OPTION_SUPPORT_OLD_CODE + 1)
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#define OPTION_EXPORT_ALL (OPTION_OUT_DEF + 1)
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#define OPTION_EXCLUDE_SYMBOLS (OPTION_EXPORT_ALL + 1)
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#define OPTION_EXCLUDE_ALL_SYMBOLS (OPTION_EXCLUDE_SYMBOLS + 1)
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#define OPTION_KILL_ATS (OPTION_EXCLUDE_ALL_SYMBOLS + 1)
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#define OPTION_STDCALL_ALIASES (OPTION_KILL_ATS + 1)
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#define OPTION_ENABLE_STDCALL_FIXUP (OPTION_STDCALL_ALIASES + 1)
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#define OPTION_DISABLE_STDCALL_FIXUP (OPTION_ENABLE_STDCALL_FIXUP + 1)
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#define OPTION_THUMB_ENTRY (OPTION_DISABLE_STDCALL_FIXUP + 1)
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#define OPTION_WARN_DUPLICATE_EXPORTS (OPTION_THUMB_ENTRY + 1)
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#define OPTION_IMP_COMPAT (OPTION_WARN_DUPLICATE_EXPORTS + 1)
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#define OPTION_ENABLE_AUTO_IMAGE_BASE (OPTION_IMP_COMPAT + 1)
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#define OPTION_DISABLE_AUTO_IMAGE_BASE (OPTION_ENABLE_AUTO_IMAGE_BASE + 1)
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#define OPTION_DLL_SEARCH_PREFIX (OPTION_DISABLE_AUTO_IMAGE_BASE + 1)
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#define OPTION_NO_DEFAULT_EXCLUDES (OPTION_DLL_SEARCH_PREFIX + 1)
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#define OPTION_DLL_ENABLE_AUTO_IMPORT (OPTION_NO_DEFAULT_EXCLUDES + 1)
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#define OPTION_DLL_DISABLE_AUTO_IMPORT (OPTION_DLL_ENABLE_AUTO_IMPORT + 1)
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#define OPTION_ENABLE_EXTRA_PE_DEBUG (OPTION_DLL_DISABLE_AUTO_IMPORT + 1)
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#define OPTION_EXCLUDE_LIBS (OPTION_ENABLE_EXTRA_PE_DEBUG + 1)
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#define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC \
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(OPTION_EXCLUDE_LIBS + 1)
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#define OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC \
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(OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC + 1)
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#define OPTION_LARGE_ADDRESS_AWARE (OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC + 1)
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#define OPTION_DISABLE_LARGE_ADDRESS_AWARE \
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(OPTION_LARGE_ADDRESS_AWARE + 1)
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#define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 \
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(OPTION_DISABLE_LARGE_ADDRESS_AWARE + 1)
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||
#define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 \
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(OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 + 1)
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#define OPTION_EXCLUDE_MODULES_FOR_IMPLIB \
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(OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 + 1)
|
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#define OPTION_USE_NUL_PREFIXED_IMPORT_TABLES \
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(OPTION_EXCLUDE_MODULES_FOR_IMPLIB + 1)
|
||
#define OPTION_NO_LEADING_UNDERSCORE (OPTION_USE_NUL_PREFIXED_IMPORT_TABLES + 1)
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#define OPTION_LEADING_UNDERSCORE (OPTION_NO_LEADING_UNDERSCORE + 1)
|
||
#define OPTION_ENABLE_LONG_SECTION_NAMES \
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(OPTION_LEADING_UNDERSCORE + 1)
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||
#define OPTION_DISABLE_LONG_SECTION_NAMES \
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(OPTION_ENABLE_LONG_SECTION_NAMES + 1)
|
||
/* DLLCharacteristics flags. */
|
||
#define OPTION_DYNAMIC_BASE (OPTION_DISABLE_LONG_SECTION_NAMES + 1)
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#define OPTION_FORCE_INTEGRITY (OPTION_DYNAMIC_BASE + 1)
|
||
#define OPTION_NX_COMPAT (OPTION_FORCE_INTEGRITY + 1)
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||
#define OPTION_NO_ISOLATION (OPTION_NX_COMPAT + 1)
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||
#define OPTION_NO_SEH (OPTION_NO_ISOLATION + 1)
|
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#define OPTION_NO_BIND (OPTION_NO_SEH + 1)
|
||
#define OPTION_WDM_DRIVER (OPTION_NO_BIND + 1)
|
||
#define OPTION_TERMINAL_SERVER_AWARE (OPTION_WDM_DRIVER + 1)
|
||
/* Determinism. */
|
||
#define OPTION_INSERT_TIMESTAMP (OPTION_TERMINAL_SERVER_AWARE + 1)
|
||
#define OPTION_NO_INSERT_TIMESTAMP (OPTION_INSERT_TIMESTAMP + 1)
|
||
#define OPTION_BUILD_ID (OPTION_NO_INSERT_TIMESTAMP + 1)
|
||
|
||
static void
|
||
gld${EMULATION_NAME}_add_options
|
||
(int ns ATTRIBUTE_UNUSED,
|
||
char **shortopts ATTRIBUTE_UNUSED,
|
||
int nl,
|
||
struct option **longopts,
|
||
int nrl ATTRIBUTE_UNUSED,
|
||
struct option **really_longopts ATTRIBUTE_UNUSED)
|
||
{
|
||
static const struct option xtra_long[] =
|
||
{
|
||
/* PE options. */
|
||
{"base-file", required_argument, NULL, OPTION_BASE_FILE},
|
||
{"dll", no_argument, NULL, OPTION_DLL},
|
||
{"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
|
||
{"heap", required_argument, NULL, OPTION_HEAP},
|
||
{"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
|
||
{"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
|
||
{"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
|
||
{"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
|
||
{"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
|
||
{"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
|
||
{"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
|
||
{"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
|
||
{"stack", required_argument, NULL, OPTION_STACK},
|
||
{"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
|
||
{"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
|
||
{"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
|
||
{"use-nul-prefixed-import-tables", no_argument, NULL,
|
||
OPTION_USE_NUL_PREFIXED_IMPORT_TABLES},
|
||
{"no-leading-underscore", no_argument, NULL, OPTION_NO_LEADING_UNDERSCORE},
|
||
{"leading-underscore", no_argument, NULL, OPTION_LEADING_UNDERSCORE},
|
||
{"insert-timestamp", no_argument, NULL, OPTION_INSERT_TIMESTAMP},
|
||
{"no-insert-timestamp", no_argument, NULL, OPTION_NO_INSERT_TIMESTAMP},
|
||
#ifdef DLL_SUPPORT
|
||
/* getopt allows abbreviations, so we do this to stop it
|
||
from treating -o as an abbreviation for this option. */
|
||
{"output-def", required_argument, NULL, OPTION_OUT_DEF},
|
||
{"output-def", required_argument, NULL, OPTION_OUT_DEF},
|
||
{"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
|
||
{"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
|
||
{"exclude-all-symbols", no_argument, NULL, OPTION_EXCLUDE_ALL_SYMBOLS},
|
||
{"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
|
||
{"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB},
|
||
{"kill-at", no_argument, NULL, OPTION_KILL_ATS},
|
||
{"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
|
||
{"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
|
||
{"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
|
||
{"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
|
||
/* getopt() allows abbreviations, so we do this to stop it from
|
||
treating -c as an abbreviation for these --compat-implib. */
|
||
{"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
|
||
{"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
|
||
{"enable-auto-image-base", optional_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
|
||
{"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
|
||
{"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
|
||
{"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
|
||
{"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
|
||
{"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
|
||
{"enable-extra-pe-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
|
||
{"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC},
|
||
{"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC},
|
||
{"enable-runtime-pseudo-reloc-v1", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1},
|
||
{"enable-runtime-pseudo-reloc-v2", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2},
|
||
#endif
|
||
{"large-address-aware", no_argument, NULL, OPTION_LARGE_ADDRESS_AWARE},
|
||
{"disable-large-address-aware", no_argument, NULL, OPTION_DISABLE_LARGE_ADDRESS_AWARE},
|
||
{"enable-long-section-names", no_argument, NULL, OPTION_ENABLE_LONG_SECTION_NAMES},
|
||
{"disable-long-section-names", no_argument, NULL, OPTION_DISABLE_LONG_SECTION_NAMES},
|
||
{"dynamicbase",no_argument, NULL, OPTION_DYNAMIC_BASE},
|
||
{"forceinteg", no_argument, NULL, OPTION_FORCE_INTEGRITY},
|
||
{"nxcompat", no_argument, NULL, OPTION_NX_COMPAT},
|
||
{"no-isolation", no_argument, NULL, OPTION_NO_ISOLATION},
|
||
{"no-seh", no_argument, NULL, OPTION_NO_SEH},
|
||
{"no-bind", no_argument, NULL, OPTION_NO_BIND},
|
||
{"wdmdriver", no_argument, NULL, OPTION_WDM_DRIVER},
|
||
{"tsaware", no_argument, NULL, OPTION_TERMINAL_SERVER_AWARE},
|
||
{"build-id", optional_argument, NULL, OPTION_BUILD_ID},
|
||
{NULL, no_argument, NULL, 0}
|
||
};
|
||
|
||
*longopts
|
||
= xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
|
||
memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
|
||
}
|
||
|
||
/* PE/WIN32; added routines to get the subsystem type, heap and/or stack
|
||
parameters which may be input from the command line. */
|
||
|
||
typedef struct
|
||
{
|
||
void *ptr;
|
||
int size;
|
||
int value;
|
||
char *symbol;
|
||
int inited;
|
||
/* FALSE for an assembly level symbol and TRUE for a C visible symbol.
|
||
C visible symbols can be prefixed by underscore dependent to target's
|
||
settings. */
|
||
bfd_boolean is_c_symbol;
|
||
} definfo;
|
||
|
||
/* Get symbol name dependent to kind and C visible state of
|
||
underscore. */
|
||
#define GET_INIT_SYMBOL_NAME(IDX) \
|
||
(init[(IDX)].symbol \
|
||
+ ((!init[(IDX)].is_c_symbol || is_underscoring () != 0) ? 0 : 1))
|
||
|
||
/* Decorates the C visible symbol by underscore, if target requires. */
|
||
#define U(CSTR) \
|
||
((is_underscoring () == 0) ? CSTR : "_" CSTR)
|
||
|
||
#define D(field,symbol,def,usc) {&pe.field, sizeof (pe.field), def, symbol, 0, usc}
|
||
|
||
static definfo init[] =
|
||
{
|
||
/* imagebase must be first */
|
||
#define IMAGEBASEOFF 0
|
||
D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE, FALSE),
|
||
#define DLLOFF 1
|
||
{&dll, sizeof(dll), 0, "__dll__", 0, FALSE},
|
||
#define MSIMAGEBASEOFF 2
|
||
D(ImageBase, "___ImageBase", NT_EXE_IMAGE_BASE, TRUE),
|
||
D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT, FALSE),
|
||
D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT, FALSE),
|
||
D(MajorOperatingSystemVersion,"__major_os_version__", 4, FALSE),
|
||
D(MinorOperatingSystemVersion,"__minor_os_version__", 0, FALSE),
|
||
D(MajorImageVersion,"__major_image_version__", 1, FALSE),
|
||
D(MinorImageVersion,"__minor_image_version__", 0, FALSE),
|
||
#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
|
||
D(MajorSubsystemVersion,"__major_subsystem_version__", 3, FALSE),
|
||
#else
|
||
D(MajorSubsystemVersion,"__major_subsystem_version__", 4, FALSE),
|
||
#endif
|
||
D(MinorSubsystemVersion,"__minor_subsystem_version__", 0, FALSE),
|
||
D(Subsystem,"__subsystem__", ${SUBSYSTEM}, FALSE),
|
||
D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000, FALSE),
|
||
D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000, FALSE),
|
||
D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000, FALSE),
|
||
D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000, FALSE),
|
||
D(LoaderFlags,"__loader_flags__", 0x0, FALSE),
|
||
D(DllCharacteristics, "__dll_characteristics__", 0x0, FALSE),
|
||
{ NULL, 0, 0, NULL, 0 , FALSE}
|
||
};
|
||
|
||
|
||
static void
|
||
gld_${EMULATION_NAME}_list_options (FILE *file)
|
||
{
|
||
fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n"));
|
||
fprintf (file, _(" --dll Set image base to the default for DLLs\n"));
|
||
fprintf (file, _(" --file-alignment <size> Set file alignment\n"));
|
||
fprintf (file, _(" --heap <size> Set initial size of the heap\n"));
|
||
fprintf (file, _(" --image-base <address> Set start address of the executable\n"));
|
||
fprintf (file, _(" --major-image-version <number> Set version number of the executable\n"));
|
||
fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n"));
|
||
fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
|
||
fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n"));
|
||
fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n"));
|
||
fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
|
||
fprintf (file, _(" --section-alignment <size> Set section alignment\n"));
|
||
fprintf (file, _(" --stack <size> Set size of the initial stack\n"));
|
||
fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n"));
|
||
fprintf (file, _(" --support-old-code Support interworking with old code\n"));
|
||
fprintf (file, _(" --[no-]leading-underscore Set explicit symbol underscore prefix mode\n"));
|
||
fprintf (file, _(" --thumb-entry=<symbol> Set the entry point to be Thumb <symbol>\n"));
|
||
fprintf (file, _(" --[no-]insert-timestamp Use a real timestamp rather than zero (default).\n"));
|
||
fprintf (file, _(" This makes binaries non-deterministic\n"));
|
||
#ifdef DLL_SUPPORT
|
||
fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n"));
|
||
fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n"));
|
||
fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n"));
|
||
fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n"));
|
||
fprintf (file, _(" --exclude-all-symbols Exclude all symbols from automatic export\n"));
|
||
fprintf (file, _(" --exclude-libs lib,lib,... Exclude libraries from automatic export\n"));
|
||
fprintf (file, _(" --exclude-modules-for-implib mod,mod,...\n"));
|
||
fprintf (file, _(" Exclude objects, archive members from auto\n"));
|
||
fprintf (file, _(" export, place into import library instead.\n"));
|
||
fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n"));
|
||
fprintf (file, _(" --kill-at Remove @nn from exported symbols\n"));
|
||
fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n"));
|
||
fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports\n"));
|
||
fprintf (file, _(" --compat-implib Create backward compatible import libs;\n\
|
||
create __imp_<SYMBOL> as well.\n"));
|
||
fprintf (file, _(" --enable-auto-image-base[=<address>] Automatically choose image base for DLLs\n\
|
||
(optionally starting with address) unless\n\
|
||
specifically set with --image-base\n"));
|
||
fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n"));
|
||
fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll without\n\
|
||
an importlib, use <string><basename>.dll\n\
|
||
in preference to lib<basename>.dll \n"));
|
||
fprintf (file, _(" --enable-auto-import Do sophisticated linking of _sym to\n\
|
||
__imp_sym for DATA references\n"));
|
||
fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n"));
|
||
fprintf (file, _(" --enable-runtime-pseudo-reloc Work around auto-import limitations by\n\
|
||
adding pseudo-relocations resolved at\n\
|
||
runtime.\n"));
|
||
fprintf (file, _(" --disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for\n\
|
||
auto-imported DATA.\n"));
|
||
fprintf (file, _(" --enable-extra-pe-debug Enable verbose debug output when building\n\
|
||
or linking to DLLs (esp. auto-import)\n"));
|
||
#endif
|
||
fprintf (file, _(" --large-address-aware Executable supports virtual addresses\n\
|
||
greater than 2 gigabytes\n"));
|
||
fprintf (file, _(" --disable-large-address-aware Executable does not support virtual\n\
|
||
addresses greater than 2 gigabytes\n"));
|
||
fprintf (file, _(" --enable-long-section-names Use long COFF section names even in\n\
|
||
executable image files\n"));
|
||
fprintf (file, _(" --disable-long-section-names Never use long COFF section names, even\n\
|
||
in object files\n"));
|
||
fprintf (file, _(" --dynamicbase Image base address may be relocated using\n\
|
||
address space layout randomization (ASLR)\n"));
|
||
fprintf (file, _(" --forceinteg Code integrity checks are enforced\n"));
|
||
fprintf (file, _(" --nxcompat Image is compatible with data execution prevention\n"));
|
||
fprintf (file, _(" --no-isolation Image understands isolation but do not isolate the image\n"));
|
||
fprintf (file, _(" --no-seh Image does not use SEH. No SE handler may\n\
|
||
be called in this image\n"));
|
||
fprintf (file, _(" --no-bind Do not bind this image\n"));
|
||
fprintf (file, _(" --wdmdriver Driver uses the WDM model\n"));
|
||
fprintf (file, _(" --tsaware Image is Terminal Server aware\n"));
|
||
fprintf (file, _(" --build-id[=STYLE] Generate build ID\n"));
|
||
}
|
||
|
||
|
||
static void
|
||
set_pe_name (char *name, long val)
|
||
{
|
||
int i;
|
||
is_underscoring ();
|
||
|
||
/* Find the name and set it. */
|
||
for (i = 0; init[i].ptr; i++)
|
||
{
|
||
if (strcmp (name, GET_INIT_SYMBOL_NAME (i)) == 0)
|
||
{
|
||
init[i].value = val;
|
||
init[i].inited = 1;
|
||
if (strcmp (name,"__image_base__") == 0)
|
||
set_pe_name (U ("__ImageBase"), val);
|
||
return;
|
||
}
|
||
}
|
||
abort ();
|
||
}
|
||
|
||
static void
|
||
set_entry_point (void)
|
||
{
|
||
const char *entry;
|
||
const char *initial_symbol_char;
|
||
int i;
|
||
|
||
static const struct
|
||
{
|
||
const int value;
|
||
const char *entry;
|
||
}
|
||
v[] =
|
||
{
|
||
{ 1, "NtProcessStartup" },
|
||
{ 2, "WinMainCRTStartup" },
|
||
{ 3, "mainCRTStartup" },
|
||
{ 7, "__PosixProcessStartup"},
|
||
{ 9, "WinMainCRTStartup" },
|
||
{14, "mainCRTStartup" },
|
||
{ 0, NULL }
|
||
};
|
||
|
||
/* Entry point name for arbitrary subsystem numbers. */
|
||
static const char default_entry[] = "mainCRTStartup";
|
||
|
||
if (bfd_link_pic (&link_info) || dll)
|
||
{
|
||
#if defined (TARGET_IS_i386pe)
|
||
entry = "DllMainCRTStartup@12";
|
||
#else
|
||
entry = "DllMainCRTStartup";
|
||
#endif
|
||
}
|
||
else
|
||
{
|
||
for (i = 0; v[i].entry; i++)
|
||
if (v[i].value == pe_subsystem)
|
||
break;
|
||
|
||
/* If no match, use the default. */
|
||
if (v[i].entry != NULL)
|
||
entry = v[i].entry;
|
||
else
|
||
entry = default_entry;
|
||
}
|
||
|
||
initial_symbol_char = (is_underscoring () != 0 ? "_" : "");
|
||
|
||
if (*initial_symbol_char != '\0')
|
||
{
|
||
char *alc_entry;
|
||
|
||
/* lang_default_entry expects its argument to be permanently
|
||
allocated, so we don't free this string. */
|
||
alc_entry = xmalloc (strlen (initial_symbol_char)
|
||
+ strlen (entry)
|
||
+ 1);
|
||
strcpy (alc_entry, initial_symbol_char);
|
||
strcat (alc_entry, entry);
|
||
entry = alc_entry;
|
||
}
|
||
|
||
lang_default_entry (entry);
|
||
}
|
||
|
||
static void
|
||
set_pe_subsystem (void)
|
||
{
|
||
const char *sver;
|
||
char *end;
|
||
int len;
|
||
int i;
|
||
unsigned long temp_subsystem;
|
||
static const struct
|
||
{
|
||
const char *name;
|
||
const int value;
|
||
}
|
||
v[] =
|
||
{
|
||
{ "native", 1},
|
||
{ "windows", 2},
|
||
{ "console", 3},
|
||
{ "posix", 7},
|
||
{ "wince", 9},
|
||
{ "xbox", 14},
|
||
{ NULL, 0 }
|
||
};
|
||
|
||
/* Check for the presence of a version number. */
|
||
sver = strchr (optarg, ':');
|
||
if (sver == NULL)
|
||
len = strlen (optarg);
|
||
else
|
||
{
|
||
len = sver - optarg;
|
||
set_pe_name ("__major_subsystem_version__",
|
||
strtoul (sver + 1, &end, 0));
|
||
if (*end == '.')
|
||
set_pe_name ("__minor_subsystem_version__",
|
||
strtoul (end + 1, &end, 0));
|
||
if (*end != '\0')
|
||
einfo (_("%P: warning: bad version number in -subsystem option\n"));
|
||
}
|
||
|
||
/* Check for numeric subsystem. */
|
||
temp_subsystem = strtoul (optarg, & end, 0);
|
||
if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536))
|
||
{
|
||
/* Search list for a numeric match to use its entry point. */
|
||
for (i = 0; v[i].name; i++)
|
||
if (v[i].value == (int) temp_subsystem)
|
||
break;
|
||
|
||
/* Use this subsystem. */
|
||
pe_subsystem = (int) temp_subsystem;
|
||
}
|
||
else
|
||
{
|
||
/* Search for subsystem by name. */
|
||
for (i = 0; v[i].name; i++)
|
||
if (strncmp (optarg, v[i].name, len) == 0
|
||
&& v[i].name[len] == '\0')
|
||
break;
|
||
|
||
if (v[i].name == NULL)
|
||
{
|
||
einfo (_("%F%P: invalid subsystem type %s\n"), optarg);
|
||
return;
|
||
}
|
||
|
||
pe_subsystem = v[i].value;
|
||
}
|
||
|
||
set_pe_name ("__subsystem__", pe_subsystem);
|
||
|
||
return;
|
||
}
|
||
|
||
|
||
static void
|
||
set_pe_value (char *name)
|
||
{
|
||
char *end;
|
||
|
||
set_pe_name (name, strtoul (optarg, &end, 0));
|
||
|
||
if (end == optarg)
|
||
einfo (_("%F%P: invalid hex number for PE parameter '%s'\n"), optarg);
|
||
|
||
optarg = end;
|
||
}
|
||
|
||
|
||
static void
|
||
set_pe_stack_heap (char *resname, char *comname)
|
||
{
|
||
set_pe_value (resname);
|
||
|
||
if (*optarg == ',')
|
||
{
|
||
optarg++;
|
||
set_pe_value (comname);
|
||
}
|
||
else if (*optarg)
|
||
einfo (_("%F%P: strange hex info for PE parameter '%s'\n"), optarg);
|
||
}
|
||
|
||
#define DEFAULT_BUILD_ID_STYLE "md5"
|
||
|
||
static bfd_boolean
|
||
gld${EMULATION_NAME}_handle_option (int optc)
|
||
{
|
||
switch (optc)
|
||
{
|
||
default:
|
||
return FALSE;
|
||
|
||
case OPTION_BASE_FILE:
|
||
link_info.base_file = fopen (optarg, FOPEN_WB);
|
||
if (link_info.base_file == NULL)
|
||
einfo (_("%F%P: cannot open base file %s\n"), optarg);
|
||
break;
|
||
|
||
/* PE options. */
|
||
case OPTION_HEAP:
|
||
set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
|
||
break;
|
||
case OPTION_STACK:
|
||
set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
|
||
break;
|
||
case OPTION_SUBSYSTEM:
|
||
set_pe_subsystem ();
|
||
break;
|
||
case OPTION_MAJOR_OS_VERSION:
|
||
set_pe_value ("__major_os_version__");
|
||
break;
|
||
case OPTION_MINOR_OS_VERSION:
|
||
set_pe_value ("__minor_os_version__");
|
||
break;
|
||
case OPTION_MAJOR_SUBSYSTEM_VERSION:
|
||
set_pe_value ("__major_subsystem_version__");
|
||
break;
|
||
case OPTION_MINOR_SUBSYSTEM_VERSION:
|
||
set_pe_value ("__minor_subsystem_version__");
|
||
break;
|
||
case OPTION_MAJOR_IMAGE_VERSION:
|
||
set_pe_value ("__major_image_version__");
|
||
break;
|
||
case OPTION_MINOR_IMAGE_VERSION:
|
||
set_pe_value ("__minor_image_version__");
|
||
break;
|
||
case OPTION_FILE_ALIGNMENT:
|
||
set_pe_value ("__file_alignment__");
|
||
break;
|
||
case OPTION_SECTION_ALIGNMENT:
|
||
set_pe_value ("__section_alignment__");
|
||
break;
|
||
case OPTION_DLL:
|
||
set_pe_name ("__dll__", 1);
|
||
break;
|
||
case OPTION_IMAGE_BASE:
|
||
set_pe_value ("__image_base__");
|
||
break;
|
||
case OPTION_SUPPORT_OLD_CODE:
|
||
support_old_code = 1;
|
||
break;
|
||
case OPTION_THUMB_ENTRY:
|
||
thumb_entry_symbol = optarg;
|
||
break;
|
||
case OPTION_USE_NUL_PREFIXED_IMPORT_TABLES:
|
||
pe_use_nul_prefixed_import_tables = TRUE;
|
||
break;
|
||
case OPTION_NO_LEADING_UNDERSCORE:
|
||
pe_leading_underscore = 0;
|
||
break;
|
||
case OPTION_LEADING_UNDERSCORE:
|
||
pe_leading_underscore = 1;
|
||
break;
|
||
case OPTION_INSERT_TIMESTAMP:
|
||
insert_timestamp = TRUE;
|
||
break;
|
||
case OPTION_NO_INSERT_TIMESTAMP:
|
||
insert_timestamp = FALSE;
|
||
break;
|
||
#ifdef DLL_SUPPORT
|
||
case OPTION_OUT_DEF:
|
||
pe_out_def_filename = xstrdup (optarg);
|
||
break;
|
||
case OPTION_EXPORT_ALL:
|
||
pe_dll_export_everything = 1;
|
||
break;
|
||
case OPTION_EXCLUDE_SYMBOLS:
|
||
pe_dll_add_excludes (optarg, EXCLUDESYMS);
|
||
break;
|
||
case OPTION_EXCLUDE_ALL_SYMBOLS:
|
||
pe_dll_exclude_all_symbols = 1;
|
||
break;
|
||
case OPTION_EXCLUDE_LIBS:
|
||
pe_dll_add_excludes (optarg, EXCLUDELIBS);
|
||
break;
|
||
case OPTION_EXCLUDE_MODULES_FOR_IMPLIB:
|
||
pe_dll_add_excludes (optarg, EXCLUDEFORIMPLIB);
|
||
break;
|
||
case OPTION_KILL_ATS:
|
||
pe_dll_kill_ats = 1;
|
||
break;
|
||
case OPTION_STDCALL_ALIASES:
|
||
pe_dll_stdcall_aliases = 1;
|
||
break;
|
||
case OPTION_ENABLE_STDCALL_FIXUP:
|
||
pe_enable_stdcall_fixup = 1;
|
||
break;
|
||
case OPTION_DISABLE_STDCALL_FIXUP:
|
||
pe_enable_stdcall_fixup = 0;
|
||
break;
|
||
case OPTION_WARN_DUPLICATE_EXPORTS:
|
||
pe_dll_warn_dup_exports = 1;
|
||
break;
|
||
case OPTION_IMP_COMPAT:
|
||
pe_dll_compat_implib = 1;
|
||
break;
|
||
case OPTION_ENABLE_AUTO_IMAGE_BASE:
|
||
pe_enable_auto_image_base = 1;
|
||
if (optarg && *optarg)
|
||
{
|
||
char *end;
|
||
pe_auto_image_base = strtoul (optarg, &end, 0);
|
||
/* XXX should check that we actually parsed something */
|
||
}
|
||
break;
|
||
case OPTION_DISABLE_AUTO_IMAGE_BASE:
|
||
pe_enable_auto_image_base = 0;
|
||
break;
|
||
case OPTION_DLL_SEARCH_PREFIX:
|
||
pe_dll_search_prefix = xstrdup (optarg);
|
||
break;
|
||
case OPTION_NO_DEFAULT_EXCLUDES:
|
||
pe_dll_do_default_excludes = 0;
|
||
break;
|
||
case OPTION_DLL_ENABLE_AUTO_IMPORT:
|
||
link_info.pei386_auto_import = 1;
|
||
break;
|
||
case OPTION_DLL_DISABLE_AUTO_IMPORT:
|
||
link_info.pei386_auto_import = 0;
|
||
break;
|
||
case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC:
|
||
link_info.pei386_runtime_pseudo_reloc =
|
||
DEFAULT_PSEUDO_RELOC_VERSION;
|
||
break;
|
||
case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1:
|
||
link_info.pei386_runtime_pseudo_reloc = 1;
|
||
break;
|
||
case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2:
|
||
link_info.pei386_runtime_pseudo_reloc = 2;
|
||
break;
|
||
case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC:
|
||
link_info.pei386_runtime_pseudo_reloc = 0;
|
||
break;
|
||
case OPTION_ENABLE_EXTRA_PE_DEBUG:
|
||
pe_dll_extra_pe_debug = 1;
|
||
break;
|
||
#endif
|
||
case OPTION_LARGE_ADDRESS_AWARE:
|
||
real_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
|
||
break;
|
||
case OPTION_DISABLE_LARGE_ADDRESS_AWARE:
|
||
real_flags &= ~ IMAGE_FILE_LARGE_ADDRESS_AWARE;
|
||
break;
|
||
case OPTION_ENABLE_LONG_SECTION_NAMES:
|
||
pe_use_coff_long_section_names = 1;
|
||
break;
|
||
case OPTION_DISABLE_LONG_SECTION_NAMES:
|
||
pe_use_coff_long_section_names = 0;
|
||
break;
|
||
/* Get DLLCharacteristics bits */
|
||
case OPTION_DYNAMIC_BASE:
|
||
pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE;
|
||
break;
|
||
case OPTION_FORCE_INTEGRITY:
|
||
pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY;
|
||
break;
|
||
case OPTION_NX_COMPAT:
|
||
pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_NX_COMPAT;
|
||
break;
|
||
case OPTION_NO_ISOLATION:
|
||
pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_ISOLATION;
|
||
break;
|
||
case OPTION_NO_SEH:
|
||
pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_SEH;
|
||
break;
|
||
case OPTION_NO_BIND:
|
||
pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_BIND;
|
||
break;
|
||
case OPTION_WDM_DRIVER:
|
||
pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_WDM_DRIVER;
|
||
break;
|
||
case OPTION_TERMINAL_SERVER_AWARE:
|
||
pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE;
|
||
break;
|
||
case OPTION_BUILD_ID:
|
||
if (emit_build_id != NULL)
|
||
{
|
||
free ((char *) emit_build_id);
|
||
emit_build_id = NULL;
|
||
}
|
||
if (optarg == NULL)
|
||
optarg = DEFAULT_BUILD_ID_STYLE;
|
||
if (strcmp (optarg, "none"))
|
||
emit_build_id = xstrdup (optarg);
|
||
break;
|
||
}
|
||
|
||
/* Set DLLCharacteristics bits */
|
||
set_pe_name ("__dll_characteristics__", pe_dll_characteristics);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
|
||
#ifdef DLL_SUPPORT
|
||
static unsigned long
|
||
strhash (const char *str)
|
||
{
|
||
const unsigned char *s;
|
||
unsigned long hash;
|
||
unsigned int c;
|
||
unsigned int len;
|
||
|
||
hash = 0;
|
||
len = 0;
|
||
s = (const unsigned char *) str;
|
||
while ((c = *s++) != '\0')
|
||
{
|
||
hash += c + (c << 17);
|
||
hash ^= hash >> 2;
|
||
++len;
|
||
}
|
||
hash += len + (len << 17);
|
||
hash ^= hash >> 2;
|
||
|
||
return hash;
|
||
}
|
||
|
||
/* Use the output file to create a image base for relocatable DLLs. */
|
||
|
||
static unsigned long
|
||
compute_dll_image_base (const char *ofile)
|
||
{
|
||
unsigned long hash = strhash (ofile);
|
||
return pe_auto_image_base + ((hash << 16) & 0x0FFC0000);
|
||
}
|
||
#endif
|
||
|
||
/* Assign values to the special symbols before the linker script is
|
||
read. */
|
||
|
||
static void
|
||
gld_${EMULATION_NAME}_set_symbols (void)
|
||
{
|
||
/* Run through and invent symbols for all the
|
||
names and insert the defaults. */
|
||
int j;
|
||
|
||
is_underscoring ();
|
||
|
||
if (!init[IMAGEBASEOFF].inited)
|
||
{
|
||
if (bfd_link_relocatable (&link_info))
|
||
init[IMAGEBASEOFF].value = 0;
|
||
else if (init[DLLOFF].value || bfd_link_dll (&link_info))
|
||
{
|
||
#ifdef DLL_SUPPORT
|
||
init[IMAGEBASEOFF].value = (pe_enable_auto_image_base
|
||
? compute_dll_image_base (output_filename)
|
||
: NT_DLL_IMAGE_BASE);
|
||
#else
|
||
init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
|
||
#endif
|
||
}
|
||
else
|
||
init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
|
||
init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value;
|
||
}
|
||
|
||
/* Don't do any symbol assignments if this is a relocatable link. */
|
||
if (bfd_link_relocatable (&link_info))
|
||
return;
|
||
|
||
/* Glue the assignments into the abs section. */
|
||
push_stat_ptr (&abs_output_section->children);
|
||
|
||
for (j = 0; init[j].ptr; j++)
|
||
{
|
||
long val = init[j].value;
|
||
lang_assignment_statement_type *rv;
|
||
|
||
rv = lang_add_assignment (exp_assign (GET_INIT_SYMBOL_NAME (j),
|
||
exp_intop (val), FALSE));
|
||
if (init[j].size == sizeof (short))
|
||
*(short *) init[j].ptr = val;
|
||
else if (init[j].size == sizeof (int))
|
||
*(int *) init[j].ptr = val;
|
||
else if (init[j].size == sizeof (long))
|
||
*(long *) init[j].ptr = val;
|
||
/* This might be a long long or other special type. */
|
||
else if (init[j].size == sizeof (bfd_vma))
|
||
*(bfd_vma *) init[j].ptr = val;
|
||
else abort ();
|
||
if (j == IMAGEBASEOFF)
|
||
image_base_statement = rv;
|
||
}
|
||
/* Restore the pointer. */
|
||
pop_stat_ptr ();
|
||
|
||
if (pe.FileAlignment > pe.SectionAlignment)
|
||
{
|
||
einfo (_("%P: warning, file alignment > section alignment\n"));
|
||
}
|
||
}
|
||
|
||
/* This is called after the linker script and the command line options
|
||
have been read. */
|
||
|
||
static void
|
||
gld_${EMULATION_NAME}_after_parse (void)
|
||
{
|
||
/* PR ld/6744: Warn the user if they have used an ELF-only
|
||
option hoping it will work on PE. */
|
||
if (link_info.export_dynamic)
|
||
einfo (_("%P: warning: --export-dynamic is not supported for PE "
|
||
"targets, did you mean --export-all-symbols?\n"));
|
||
|
||
set_entry_point ();
|
||
|
||
after_parse_default ();
|
||
}
|
||
|
||
#ifdef DLL_SUPPORT
|
||
static struct bfd_link_hash_entry *pe_undef_found_sym;
|
||
|
||
static bfd_boolean
|
||
pe_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf)
|
||
{
|
||
int sl;
|
||
char *string = inf;
|
||
const char *hs = h->root.string;
|
||
|
||
sl = strlen (string);
|
||
if (h->type == bfd_link_hash_defined
|
||
&& ((*hs == '@' && *string == '_'
|
||
&& strncmp (hs + 1, string + 1, sl - 1) == 0)
|
||
|| strncmp (hs, string, sl) == 0)
|
||
&& h->root.string[sl] == '@')
|
||
{
|
||
pe_undef_found_sym = h;
|
||
return FALSE;
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* Change UNDEF to a defined symbol, taking data from SYM. */
|
||
|
||
static void
|
||
change_undef (struct bfd_link_hash_entry * undef,
|
||
struct bfd_link_hash_entry * sym)
|
||
{
|
||
static bfd_boolean gave_warning_message = FALSE;
|
||
|
||
undef->type = bfd_link_hash_defined;
|
||
undef->u.def.value = sym->u.def.value;
|
||
undef->u.def.section = sym->u.def.section;
|
||
|
||
if (pe_enable_stdcall_fixup == -1)
|
||
{
|
||
einfo (_("%P: warning: resolving %s by linking to %s\n"),
|
||
undef->root.string, sym->root.string);
|
||
|
||
if (! gave_warning_message)
|
||
{
|
||
einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
|
||
einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
|
||
gave_warning_message = TRUE;
|
||
}
|
||
}
|
||
|
||
/* PR 19803: Make sure that the linked symbol is not garbage collected. */
|
||
lang_add_gc_name (sym->root.string);
|
||
}
|
||
|
||
static void
|
||
pe_fixup_stdcalls (void)
|
||
{
|
||
struct bfd_link_hash_entry *undef, *sym;
|
||
|
||
if (pe_dll_extra_pe_debug)
|
||
printf ("%s\n", __FUNCTION__);
|
||
|
||
for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
|
||
if (undef->type == bfd_link_hash_undefined)
|
||
{
|
||
const char * name = undef->root.string;
|
||
char * at;
|
||
int lead_at = (*name == '@');
|
||
|
||
if (lead_at)
|
||
at = strchr (name + 1, '@');
|
||
else
|
||
at = strchr (name, '@');
|
||
|
||
if (at || lead_at)
|
||
{
|
||
/* The symbol is a stdcall symbol, so let's look for a
|
||
cdecl symbol with the same name and resolve to that. */
|
||
char *cname = xstrdup (name);
|
||
|
||
if (lead_at)
|
||
*cname = '_';
|
||
if (at)
|
||
* strchr (cname, '@') = 0;
|
||
sym = bfd_link_hash_lookup (link_info.hash, cname, FALSE, FALSE, TRUE);
|
||
|
||
if (sym && sym->type == bfd_link_hash_defined)
|
||
change_undef (undef, sym);
|
||
}
|
||
else
|
||
{
|
||
/* The symbol is a cdecl symbol, so we look for stdcall
|
||
symbols - which means scanning the whole symbol table. */
|
||
pe_undef_found_sym = NULL;
|
||
bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match,
|
||
(char *) name);
|
||
if (pe_undef_found_sym)
|
||
change_undef (undef, pe_undef_found_sym);
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
make_import_fixup (arelent *rel, asection *s, char *name, const char *symname)
|
||
{
|
||
struct bfd_symbol *sym = *rel->sym_ptr_ptr;
|
||
char addend[4];
|
||
bfd_vma _addend;
|
||
|
||
if (pe_dll_extra_pe_debug)
|
||
printf ("arelent: %s@%#lx: add=%li\n", sym->name,
|
||
(unsigned long) rel->address, (long) rel->addend);
|
||
|
||
if (! bfd_get_section_contents (s->owner, s, addend, rel->address, sizeof (addend)))
|
||
einfo (_("%P: %C: cannot get section contents - auto-import exception\n"),
|
||
s->owner, s, rel->address);
|
||
|
||
_addend = bfd_get_32 (s->owner, addend);
|
||
pe_create_import_fixup (rel, s, _addend, name, symname);
|
||
}
|
||
|
||
static bfd_boolean
|
||
pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
|
||
{
|
||
printf ("+%s\n", h->string);
|
||
|
||
return TRUE;
|
||
}
|
||
#endif /* DLL_SUPPORT */
|
||
|
||
static void
|
||
debug_section_p (bfd *abfd ATTRIBUTE_UNUSED, asection *sect, void *obj)
|
||
{
|
||
int *found = (int *) obj;
|
||
if (strncmp (".debug_", sect->name, sizeof (".debug_") - 1) == 0)
|
||
*found = 1;
|
||
}
|
||
|
||
static bfd_boolean
|
||
pecoff_checksum_contents (bfd *abfd,
|
||
void (*process) (const void *, size_t, void *),
|
||
void *arg)
|
||
{
|
||
file_ptr filepos = (file_ptr) 0;
|
||
|
||
while (1)
|
||
{
|
||
unsigned char b;
|
||
int status;
|
||
|
||
if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
|
||
return 0;
|
||
|
||
status = bfd_bread (&b, (bfd_size_type) 1, abfd);
|
||
if (status < 1)
|
||
{
|
||
break;
|
||
}
|
||
|
||
(*process) (&b, 1, arg);
|
||
filepos += 1;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static bfd_boolean
|
||
write_build_id (bfd *abfd)
|
||
{
|
||
struct pe_tdata *t = pe_data (abfd);
|
||
asection *asec;
|
||
struct bfd_link_order *link_order = NULL;
|
||
unsigned char *contents;
|
||
bfd_size_type size;
|
||
bfd_size_type build_id_size;
|
||
unsigned char *build_id;
|
||
|
||
/* Find the section the .buildid output section has been merged info. */
|
||
for (asec = abfd->sections; asec != NULL; asec = asec->next)
|
||
{
|
||
struct bfd_link_order *l = NULL;
|
||
for (l = asec->map_head.link_order; l != NULL; l = l->next)
|
||
{
|
||
if (l->type == bfd_indirect_link_order)
|
||
{
|
||
if (l->u.indirect.section == t->build_id.sec)
|
||
{
|
||
link_order = l;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (link_order)
|
||
break;
|
||
}
|
||
|
||
if (!link_order)
|
||
{
|
||
einfo (_("%P: warning: .buildid section discarded,"
|
||
" --build-id ignored\n"));
|
||
return TRUE;
|
||
}
|
||
|
||
if (t->build_id.sec->contents == NULL)
|
||
t->build_id.sec->contents = (unsigned char *) xmalloc (t->build_id.sec->size);
|
||
contents = t->build_id.sec->contents;
|
||
size = t->build_id.sec->size;
|
||
|
||
build_id_size = compute_build_id_size (t->build_id.style);
|
||
build_id = xmalloc (build_id_size);
|
||
generate_build_id (abfd, t->build_id.style, pecoff_checksum_contents, build_id, build_id_size);
|
||
|
||
bfd_vma ib = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase;
|
||
|
||
/* Construct a debug directory entry which points to an immediately following CodeView record. */
|
||
struct internal_IMAGE_DEBUG_DIRECTORY idd;
|
||
idd.Characteristics = 0;
|
||
idd.TimeDateStamp = 0;
|
||
idd.MajorVersion = 0;
|
||
idd.MinorVersion = 0;
|
||
idd.Type = PE_IMAGE_DEBUG_TYPE_CODEVIEW;
|
||
idd.SizeOfData = sizeof (CV_INFO_PDB70) + 1;
|
||
idd.AddressOfRawData = asec->vma - ib + link_order->offset
|
||
+ sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
|
||
idd.PointerToRawData = asec->filepos + link_order->offset
|
||
+ sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
|
||
|
||
struct external_IMAGE_DEBUG_DIRECTORY *ext = (struct external_IMAGE_DEBUG_DIRECTORY *)contents;
|
||
_bfd_XXi_swap_debugdir_out (abfd, &idd, ext);
|
||
|
||
/* Write the debug directory entry. */
|
||
if (bfd_seek (abfd, asec->filepos + link_order->offset, SEEK_SET) != 0)
|
||
return 0;
|
||
|
||
if (bfd_bwrite (contents, size, abfd) != size)
|
||
return 0;
|
||
|
||
/* Construct the CodeView record. */
|
||
CODEVIEW_INFO cvinfo;
|
||
cvinfo.CVSignature = CVINFO_PDB70_CVSIGNATURE;
|
||
cvinfo.Age = 1;
|
||
|
||
/* Zero pad or truncate the generated build_id to fit in the CodeView record. */
|
||
memset (&(cvinfo.Signature), 0, CV_INFO_SIGNATURE_LENGTH);
|
||
memcpy (&(cvinfo.Signature), build_id, (build_id_size > CV_INFO_SIGNATURE_LENGTH)
|
||
? CV_INFO_SIGNATURE_LENGTH : build_id_size);
|
||
|
||
free (build_id);
|
||
|
||
/* Write the codeview record. */
|
||
if (_bfd_XXi_write_codeview_record (abfd, idd.PointerToRawData, &cvinfo) == 0)
|
||
return 0;
|
||
|
||
/* Record the location of the debug directory in the data directory. */
|
||
pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].VirtualAddress
|
||
= asec->vma - ib + link_order->offset;
|
||
pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].Size
|
||
= sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Make .buildid section, and set up coff_tdata->build_id. */
|
||
static bfd_boolean
|
||
setup_build_id (bfd *ibfd)
|
||
{
|
||
asection *s;
|
||
flagword flags;
|
||
|
||
if (!validate_build_id_style (emit_build_id))
|
||
{
|
||
einfo (_("%P: warning: unrecognized --build-id style ignored\n"));
|
||
return FALSE;
|
||
}
|
||
|
||
flags = (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_IN_MEMORY
|
||
| SEC_LINKER_CREATED | SEC_READONLY | SEC_DATA);
|
||
s = bfd_make_section_anyway_with_flags (ibfd, ".buildid", flags);
|
||
if (s != NULL)
|
||
{
|
||
struct pe_tdata *t = pe_data (link_info.output_bfd);
|
||
t->build_id.after_write_object_contents = &write_build_id;
|
||
t->build_id.style = emit_build_id;
|
||
t->build_id.sec = s;
|
||
|
||
/* Section is a fixed size:
|
||
One IMAGE_DEBUG_DIRECTORY entry, of type IMAGE_DEBUG_TYPE_CODEVIEW,
|
||
pointing at a CV_INFO_PDB70 record containing the build-id, with a
|
||
null byte for PdbFileName. */
|
||
s->size = sizeof (struct external_IMAGE_DEBUG_DIRECTORY)
|
||
+ sizeof (CV_INFO_PDB70) + 1;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
einfo (_("%P: warning: cannot create .buildid section,"
|
||
" --build-id ignored\n"));
|
||
return FALSE;
|
||
}
|
||
|
||
static void
|
||
gld_${EMULATION_NAME}_after_open (void)
|
||
{
|
||
after_open_default ();
|
||
|
||
#ifdef DLL_SUPPORT
|
||
if (pe_dll_extra_pe_debug)
|
||
{
|
||
bfd *a;
|
||
struct bfd_link_hash_entry *sym;
|
||
|
||
printf ("%s()\n", __FUNCTION__);
|
||
|
||
for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
|
||
printf ("-%s\n", sym->root.string);
|
||
bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);
|
||
|
||
for (a = link_info.input_bfds; a; a = a->link.next)
|
||
printf ("*%s\n",a->filename);
|
||
}
|
||
#endif
|
||
|
||
if (emit_build_id != NULL)
|
||
{
|
||
bfd *abfd;
|
||
|
||
/* Find a COFF input. */
|
||
for (abfd = link_info.input_bfds;
|
||
abfd != (bfd *) NULL; abfd = abfd->link.next)
|
||
if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
|
||
break;
|
||
|
||
/* If there are no COFF input files do not try to
|
||
add a build-id section. */
|
||
if (abfd == NULL
|
||
|| !setup_build_id (abfd))
|
||
{
|
||
free ((char *) emit_build_id);
|
||
emit_build_id = NULL;
|
||
}
|
||
}
|
||
|
||
/* Pass the wacky PE command line options into the output bfd.
|
||
FIXME: This should be done via a function, rather than by
|
||
including an internal BFD header. */
|
||
|
||
if (bfd_get_flavour (link_info.output_bfd) != bfd_target_coff_flavour
|
||
|| coff_data (link_info.output_bfd) == NULL
|
||
|| coff_data (link_info.output_bfd)->pe == 0)
|
||
einfo (_("%F%P: cannot perform PE operations on non PE output file '%pB'\n"),
|
||
link_info.output_bfd);
|
||
|
||
pe_data (link_info.output_bfd)->pe_opthdr = pe;
|
||
pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
|
||
pe_data (link_info.output_bfd)->real_flags |= real_flags;
|
||
pe_data (link_info.output_bfd)->insert_timestamp = insert_timestamp;
|
||
|
||
/* At this point we must decide whether to use long section names
|
||
in the output or not. If the user hasn't explicitly specified
|
||
on the command line, we leave it to the default for the format
|
||
(object files yes, image files no), except if there is debug
|
||
information present; GDB relies on the long section names to
|
||
find it, so enable it in that case. */
|
||
if (pe_use_coff_long_section_names < 0 && link_info.strip == strip_none)
|
||
{
|
||
if (bfd_link_relocatable (&link_info))
|
||
pe_use_coff_long_section_names = 1;
|
||
else
|
||
{
|
||
/* Iterate over all sections of all input BFDs, checking
|
||
for any that begin 'debug_' and are long names. */
|
||
LANG_FOR_EACH_INPUT_STATEMENT (is)
|
||
{
|
||
int found_debug = 0;
|
||
|
||
bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug);
|
||
if (found_debug)
|
||
{
|
||
pe_use_coff_long_section_names = 1;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
pe_output_file_set_long_section_names (link_info.output_bfd);
|
||
|
||
#ifdef DLL_SUPPORT
|
||
pe_process_import_defs (link_info.output_bfd, &link_info);
|
||
|
||
if (link_info.pei386_auto_import) /* -1=warn or 1=enable */
|
||
pe_find_data_imports (U ("_head_"), make_import_fixup);
|
||
|
||
/* The implementation of the feature is rather dumb and would cause the
|
||
compilation time to go through the roof if there are many undefined
|
||
symbols in the link, so it needs to be run after auto-import. */
|
||
if (pe_enable_stdcall_fixup) /* -1=warn or 1=enable */
|
||
pe_fixup_stdcalls ();
|
||
|
||
#if defined (TARGET_IS_i386pe) \
|
||
|| defined (TARGET_IS_armpe) \
|
||
|| defined (TARGET_IS_arm_wince_pe)
|
||
if (!bfd_link_relocatable (&link_info))
|
||
pe_dll_build_sections (link_info.output_bfd, &link_info);
|
||
#else
|
||
if (bfd_link_pic (&link_info))
|
||
pe_dll_build_sections (link_info.output_bfd, &link_info);
|
||
else
|
||
pe_exe_build_sections (link_info.output_bfd, &link_info);
|
||
#endif
|
||
#endif /* DLL_SUPPORT */
|
||
|
||
#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
|
||
if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL)
|
||
{
|
||
/* The arm backend needs special fields in the output hash structure.
|
||
These will only be created if the output format is an arm format,
|
||
hence we do not support linking and changing output formats at the
|
||
same time. Use a link followed by objcopy to change output formats. */
|
||
einfo (_("%F%P: error: cannot change output format "
|
||
"whilst linking %s binaries\n"), "ARM");
|
||
return;
|
||
}
|
||
{
|
||
/* Find a BFD that can hold the interworking stubs. */
|
||
LANG_FOR_EACH_INPUT_STATEMENT (is)
|
||
{
|
||
if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info))
|
||
break;
|
||
}
|
||
}
|
||
#endif
|
||
|
||
{
|
||
/* This next chunk of code tries to detect the case where you have
|
||
two import libraries for the same DLL (specifically,
|
||
symbolically linking libm.a and libc.a in cygwin to
|
||
libcygwin.a). In those cases, it's possible for function
|
||
thunks from the second implib to be used but without the
|
||
head/tail objects, causing an improper import table. We detect
|
||
those cases and rename the "other" import libraries to match
|
||
the one the head/tail come from, so that the linker will sort
|
||
things nicely and produce a valid import table. */
|
||
|
||
LANG_FOR_EACH_INPUT_STATEMENT (is)
|
||
{
|
||
if (is->the_bfd->my_archive)
|
||
{
|
||
int idata2 = 0, reloc_count=0, is_imp = 0;
|
||
asection *sec;
|
||
|
||
/* See if this is an import library thunk. */
|
||
for (sec = is->the_bfd->sections; sec; sec = sec->next)
|
||
{
|
||
if (strcmp (sec->name, ".idata\$2") == 0)
|
||
idata2 = 1;
|
||
if (CONST_STRNEQ (sec->name, ".idata\$"))
|
||
is_imp = 1;
|
||
reloc_count += sec->reloc_count;
|
||
}
|
||
|
||
if (is_imp && !idata2 && reloc_count)
|
||
{
|
||
/* It is, look for the reference to head and see if it's
|
||
from our own library. */
|
||
for (sec = is->the_bfd->sections; sec; sec = sec->next)
|
||
{
|
||
int i;
|
||
long relsize;
|
||
asymbol **symbols;
|
||
arelent **relocs;
|
||
int nrelocs;
|
||
|
||
relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
|
||
if (relsize < 1)
|
||
break;
|
||
|
||
if (!bfd_generic_link_read_symbols (is->the_bfd))
|
||
{
|
||
einfo (_("%F%P: %pB: could not read symbols: %E\n"),
|
||
is->the_bfd);
|
||
return;
|
||
}
|
||
symbols = bfd_get_outsymbols (is->the_bfd);
|
||
|
||
relocs = xmalloc ((size_t) relsize);
|
||
nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
|
||
relocs, symbols);
|
||
if (nrelocs < 0)
|
||
{
|
||
free (relocs);
|
||
einfo (_("%X%P: unable to process relocs: %E\n"));
|
||
return;
|
||
}
|
||
|
||
for (i = 0; i < nrelocs; i++)
|
||
{
|
||
struct bfd_symbol *s;
|
||
struct bfd_link_hash_entry * blhe;
|
||
const char *other_bfd_filename;
|
||
char *n;
|
||
|
||
s = (relocs[i]->sym_ptr_ptr)[0];
|
||
|
||
if (s->flags & BSF_LOCAL)
|
||
continue;
|
||
|
||
/* Thunk section with reloc to another bfd. */
|
||
blhe = bfd_link_hash_lookup (link_info.hash,
|
||
s->name,
|
||
FALSE, FALSE, TRUE);
|
||
|
||
if (blhe == NULL
|
||
|| blhe->type != bfd_link_hash_defined)
|
||
continue;
|
||
|
||
other_bfd_filename
|
||
= blhe->u.def.section->owner->my_archive
|
||
? bfd_get_filename (blhe->u.def.section->owner->my_archive)
|
||
: bfd_get_filename (blhe->u.def.section->owner);
|
||
|
||
if (filename_cmp (bfd_get_filename
|
||
(is->the_bfd->my_archive),
|
||
other_bfd_filename) == 0)
|
||
continue;
|
||
|
||
/* Rename this implib to match the other one. */
|
||
n = xmalloc (strlen (other_bfd_filename) + 1);
|
||
strcpy (n, other_bfd_filename);
|
||
bfd_set_filename (is->the_bfd->my_archive, n);
|
||
}
|
||
|
||
free (relocs);
|
||
/* Note - we do not free the symbols,
|
||
they are now cached in the BFD. */
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
{
|
||
int is_ms_arch = 0;
|
||
bfd *cur_arch = 0;
|
||
lang_input_statement_type *is2;
|
||
lang_input_statement_type *is3;
|
||
|
||
/* Careful - this is a shell script. Watch those dollar signs! */
|
||
/* Microsoft import libraries have every member named the same,
|
||
and not in the right order for us to link them correctly. We
|
||
must detect these and rename the members so that they'll link
|
||
correctly. There are three types of objects: the head, the
|
||
thunks, and the sentinel(s). The head is easy; it's the one
|
||
with idata2. We assume that the sentinels won't have relocs,
|
||
and the thunks will. It's easier than checking the symbol
|
||
table for external references. */
|
||
LANG_FOR_EACH_INPUT_STATEMENT (is)
|
||
{
|
||
if (is->the_bfd->my_archive)
|
||
{
|
||
char *pnt;
|
||
bfd *arch = is->the_bfd->my_archive;
|
||
|
||
if (cur_arch != arch)
|
||
{
|
||
cur_arch = arch;
|
||
is_ms_arch = 1;
|
||
|
||
for (is3 = is;
|
||
is3 && is3->the_bfd->my_archive == arch;
|
||
is3 = (lang_input_statement_type *) is3->next)
|
||
{
|
||
/* A MS dynamic import library can also contain static
|
||
members, so look for the first element with a .dll
|
||
extension, and use that for the remainder of the
|
||
comparisons. */
|
||
pnt = strrchr (is3->the_bfd->filename, '.');
|
||
if (pnt != NULL && filename_cmp (pnt, ".dll") == 0)
|
||
break;
|
||
}
|
||
|
||
if (is3 == NULL)
|
||
is_ms_arch = 0;
|
||
else
|
||
{
|
||
/* OK, found one. Now look to see if the remaining
|
||
(dynamic import) members use the same name. */
|
||
for (is2 = is;
|
||
is2 && is2->the_bfd->my_archive == arch;
|
||
is2 = (lang_input_statement_type *) is2->next)
|
||
{
|
||
/* Skip static members, ie anything with a .obj
|
||
extension. */
|
||
pnt = strrchr (is2->the_bfd->filename, '.');
|
||
if (pnt != NULL && filename_cmp (pnt, ".obj") == 0)
|
||
continue;
|
||
|
||
if (filename_cmp (is3->the_bfd->filename,
|
||
is2->the_bfd->filename))
|
||
{
|
||
is_ms_arch = 0;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/* This fragment might have come from an .obj file in a Microsoft
|
||
import, and not an actual import record. If this is the case,
|
||
then leave the filename alone. */
|
||
pnt = strrchr (is->the_bfd->filename, '.');
|
||
|
||
if (is_ms_arch && (filename_cmp (pnt, ".dll") == 0))
|
||
{
|
||
int idata2 = 0, reloc_count=0;
|
||
asection *sec;
|
||
char *new_name, seq;
|
||
|
||
for (sec = is->the_bfd->sections; sec; sec = sec->next)
|
||
{
|
||
if (strcmp (sec->name, ".idata\$2") == 0)
|
||
idata2 = 1;
|
||
reloc_count += sec->reloc_count;
|
||
}
|
||
|
||
if (idata2) /* .idata2 is the TOC */
|
||
seq = 'a';
|
||
else if (reloc_count > 0) /* thunks */
|
||
seq = 'b';
|
||
else /* sentinel */
|
||
seq = 'c';
|
||
|
||
new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
|
||
sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
|
||
bfd_set_filename (is->the_bfd, new_name);
|
||
|
||
new_name = xmalloc (strlen (is->filename) + 3);
|
||
sprintf (new_name, "%s.%c", is->filename, seq);
|
||
is->filename = new_name;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
{
|
||
/* The following chunk of code tries to identify jump stubs in
|
||
import libraries which are dead code and eliminates them
|
||
from the final link. For each exported symbol <sym>, there
|
||
is a object file in the import library with a .text section
|
||
and several .idata\$* sections. The .text section contains the
|
||
symbol definition for <sym> which is a jump stub of the form
|
||
jmp *__imp_<sym>. The .idata\$5 contains the symbol definition
|
||
for __imp_<sym> which is the address of the slot for <sym> in
|
||
the import address table. When a symbol is imported explicitly
|
||
using __declspec(dllimport) declaration, the compiler generates
|
||
a reference to __imp_<sym> which directly resolves to the
|
||
symbol in .idata\$5, in which case the jump stub code is not
|
||
needed. The following code tries to identify jump stub sections
|
||
in import libraries which are not referred to by anyone and
|
||
marks them for exclusion from the final link. */
|
||
LANG_FOR_EACH_INPUT_STATEMENT (is)
|
||
{
|
||
if (is->the_bfd->my_archive)
|
||
{
|
||
int is_imp = 0;
|
||
asection *sec, *stub_sec = NULL;
|
||
|
||
/* See if this is an import library thunk. */
|
||
for (sec = is->the_bfd->sections; sec; sec = sec->next)
|
||
{
|
||
if (strncmp (sec->name, ".idata\$", 7) == 0)
|
||
is_imp = 1;
|
||
/* The section containing the jmp stub has code
|
||
and has a reloc. */
|
||
if ((sec->flags & SEC_CODE) && sec->reloc_count)
|
||
stub_sec = sec;
|
||
}
|
||
|
||
if (is_imp && stub_sec)
|
||
{
|
||
asymbol **symbols;
|
||
long nsyms, src_count;
|
||
struct bfd_link_hash_entry * blhe;
|
||
|
||
if (!bfd_generic_link_read_symbols (is->the_bfd))
|
||
{
|
||
einfo (_("%F%P: %pB: could not read symbols: %E\n"),
|
||
is->the_bfd);
|
||
return;
|
||
}
|
||
symbols = bfd_get_outsymbols (is->the_bfd);
|
||
nsyms = bfd_get_symcount (is->the_bfd);
|
||
|
||
for (src_count = 0; src_count < nsyms; src_count++)
|
||
{
|
||
if (symbols[src_count]->section->id == stub_sec->id)
|
||
{
|
||
/* This symbol belongs to the section containing
|
||
the stub. */
|
||
blhe = bfd_link_hash_lookup (link_info.hash,
|
||
symbols[src_count]->name,
|
||
FALSE, FALSE, TRUE);
|
||
/* If the symbol in the stub section has no other
|
||
undefined references, exclude the stub section
|
||
from the final link. */
|
||
if (blhe != NULL
|
||
&& blhe->type == bfd_link_hash_defined
|
||
&& blhe->u.undef.next == NULL
|
||
&& blhe != link_info.hash->undefs_tail)
|
||
stub_sec->flags |= SEC_EXCLUDE;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
gld_${EMULATION_NAME}_before_allocation (void)
|
||
{
|
||
#ifdef TARGET_IS_ppcpe
|
||
/* Here we rummage through the found bfds to collect toc information. */
|
||
{
|
||
LANG_FOR_EACH_INPUT_STATEMENT (is)
|
||
{
|
||
if (!ppc_process_before_allocation (is->the_bfd, &link_info))
|
||
{
|
||
/* xgettext:c-format */
|
||
einfo (_("%P: errors encountered processing file %s\n"), is->filename);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* We have seen it all. Allocate it, and carry on. */
|
||
ppc_allocate_toc_section (&link_info);
|
||
#endif /* TARGET_IS_ppcpe */
|
||
|
||
#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
|
||
/* FIXME: we should be able to set the size of the interworking stub
|
||
section.
|
||
|
||
Here we rummage through the found bfds to collect glue
|
||
information. FIXME: should this be based on a command line
|
||
option? krk@cygnus.com. */
|
||
{
|
||
LANG_FOR_EACH_INPUT_STATEMENT (is)
|
||
{
|
||
if (! bfd_arm_process_before_allocation
|
||
(is->the_bfd, & link_info, support_old_code))
|
||
{
|
||
/* xgettext:c-format */
|
||
einfo (_("%P: errors encountered processing file %s for interworking\n"),
|
||
is->filename);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* We have seen it all. Allocate it, and carry on. */
|
||
bfd_arm_allocate_interworking_sections (& link_info);
|
||
#endif /* TARGET_IS_armpe || TARGET_IS_arm_wince_pe */
|
||
|
||
before_allocation_default ();
|
||
}
|
||
|
||
#ifdef DLL_SUPPORT
|
||
/* This is called when an input file isn't recognized as a BFD. We
|
||
check here for .DEF files and pull them in automatically. */
|
||
|
||
static int
|
||
saw_option (char *option)
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; init[i].ptr; i++)
|
||
if (strcmp (GET_INIT_SYMBOL_NAME (i), option) == 0)
|
||
return init[i].inited;
|
||
return 0;
|
||
}
|
||
#endif /* DLL_SUPPORT */
|
||
|
||
static bfd_boolean
|
||
gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
|
||
{
|
||
#ifdef DLL_SUPPORT
|
||
const char *ext = entry->filename + strlen (entry->filename) - 4;
|
||
|
||
if (filename_cmp (ext, ".def") == 0 || filename_cmp (ext, ".DEF") == 0)
|
||
{
|
||
pe_def_file = def_file_parse (entry->filename, pe_def_file);
|
||
|
||
if (pe_def_file)
|
||
{
|
||
int i, buflen=0, len;
|
||
char *buf;
|
||
|
||
for (i = 0; i < pe_def_file->num_exports; i++)
|
||
{
|
||
len = strlen (pe_def_file->exports[i].internal_name);
|
||
if (buflen < len + 2)
|
||
buflen = len + 2;
|
||
}
|
||
|
||
buf = xmalloc (buflen);
|
||
|
||
for (i = 0; i < pe_def_file->num_exports; i++)
|
||
{
|
||
struct bfd_link_hash_entry *h;
|
||
|
||
sprintf (buf, "%s%s", U (""),
|
||
pe_def_file->exports[i].internal_name);
|
||
|
||
h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE);
|
||
if (h == (struct bfd_link_hash_entry *) NULL)
|
||
einfo (_("%F%P: bfd_link_hash_lookup failed: %E\n"));
|
||
if (h->type == bfd_link_hash_new)
|
||
{
|
||
h->type = bfd_link_hash_undefined;
|
||
h->u.undef.abfd = NULL;
|
||
bfd_link_add_undef (link_info.hash, h);
|
||
}
|
||
}
|
||
free (buf);
|
||
|
||
/* def_file_print (stdout, pe_def_file); */
|
||
if (pe_def_file->is_dll == 1)
|
||
link_info.type = type_dll;
|
||
|
||
if (pe_def_file->base_address != (bfd_vma)(-1))
|
||
{
|
||
pe.ImageBase
|
||
= pe_data (link_info.output_bfd)->pe_opthdr.ImageBase
|
||
= init[IMAGEBASEOFF].value
|
||
= pe_def_file->base_address;
|
||
init[IMAGEBASEOFF].inited = 1;
|
||
if (image_base_statement)
|
||
image_base_statement->exp
|
||
= exp_assign ("__image_base__", exp_intop (pe.ImageBase),
|
||
FALSE);
|
||
}
|
||
|
||
if (pe_def_file->stack_reserve != -1
|
||
&& ! saw_option ("__size_of_stack_reserve__"))
|
||
{
|
||
pe.SizeOfStackReserve = pe_def_file->stack_reserve;
|
||
if (pe_def_file->stack_commit != -1)
|
||
pe.SizeOfStackCommit = pe_def_file->stack_commit;
|
||
}
|
||
if (pe_def_file->heap_reserve != -1
|
||
&& ! saw_option ("__size_of_heap_reserve__"))
|
||
{
|
||
pe.SizeOfHeapReserve = pe_def_file->heap_reserve;
|
||
if (pe_def_file->heap_commit != -1)
|
||
pe.SizeOfHeapCommit = pe_def_file->heap_commit;
|
||
}
|
||
return TRUE;
|
||
}
|
||
}
|
||
#endif
|
||
return FALSE;
|
||
}
|
||
|
||
static bfd_boolean
|
||
gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
|
||
{
|
||
#ifdef DLL_SUPPORT
|
||
#ifdef TARGET_IS_i386pe
|
||
pe_dll_id_target ("pei-i386");
|
||
#endif
|
||
#ifdef TARGET_IS_shpe
|
||
pe_dll_id_target ("pei-shl");
|
||
#endif
|
||
#ifdef TARGET_IS_armpe
|
||
pe_dll_id_target ("pei-arm-little");
|
||
#endif
|
||
#ifdef TARGET_IS_arm_wince_pe
|
||
pe_dll_id_target ("pei-arm-wince-little");
|
||
#endif
|
||
if (pe_bfd_is_dll (entry->the_bfd))
|
||
return pe_implied_import_dll (entry->filename);
|
||
#endif
|
||
return FALSE;
|
||
}
|
||
|
||
static void
|
||
gld_${EMULATION_NAME}_finish (void)
|
||
{
|
||
#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
|
||
struct bfd_link_hash_entry * h;
|
||
|
||
if (thumb_entry_symbol != NULL)
|
||
{
|
||
h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
|
||
FALSE, FALSE, TRUE);
|
||
|
||
if (h != (struct bfd_link_hash_entry *) NULL
|
||
&& (h->type == bfd_link_hash_defined
|
||
|| h->type == bfd_link_hash_defweak)
|
||
&& h->u.def.section->output_section != NULL)
|
||
{
|
||
static char buffer[32];
|
||
bfd_vma val;
|
||
|
||
/* Special procesing is required for a Thumb entry symbol. The
|
||
bottom bit of its address must be set. */
|
||
val = (h->u.def.value
|
||
+ bfd_section_vma (h->u.def.section->output_section)
|
||
+ h->u.def.section->output_offset);
|
||
|
||
val |= 1;
|
||
|
||
/* Now convert this value into a string and store it in entry_symbol
|
||
where the lang_finish() function will pick it up. */
|
||
buffer[0] = '0';
|
||
buffer[1] = 'x';
|
||
|
||
sprintf_vma (buffer + 2, val);
|
||
|
||
if (entry_symbol.name != NULL && entry_from_cmdline)
|
||
einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
|
||
thumb_entry_symbol, entry_symbol.name);
|
||
entry_symbol.name = buffer;
|
||
}
|
||
else
|
||
einfo (_("%P: warning: cannot find thumb start symbol %s\n"), thumb_entry_symbol);
|
||
}
|
||
#endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe) */
|
||
|
||
finish_default ();
|
||
|
||
#ifdef DLL_SUPPORT
|
||
if (bfd_link_pic (&link_info)
|
||
#if !defined(TARGET_IS_shpe)
|
||
|| (!bfd_link_relocatable (&link_info)
|
||
&& pe_def_file->num_exports != 0)
|
||
#endif
|
||
)
|
||
{
|
||
pe_dll_fill_sections (link_info.output_bfd, &link_info);
|
||
if (command_line.out_implib_filename)
|
||
pe_dll_generate_implib (pe_def_file, command_line.out_implib_filename,
|
||
&link_info);
|
||
}
|
||
#if defined(TARGET_IS_shpe)
|
||
/* ARM doesn't need relocs. */
|
||
else
|
||
{
|
||
pe_exe_fill_sections (link_info.output_bfd, &link_info);
|
||
}
|
||
#endif
|
||
|
||
if (pe_out_def_filename)
|
||
pe_dll_generate_def_file (pe_out_def_filename);
|
||
#endif /* DLL_SUPPORT */
|
||
|
||
/* I don't know where .idata gets set as code, but it shouldn't be. */
|
||
{
|
||
asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata");
|
||
|
||
if (asec)
|
||
{
|
||
asec->flags &= ~SEC_CODE;
|
||
asec->flags |= SEC_DATA;
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
/* Place an orphan section.
|
||
|
||
We use this to put sections in a reasonable place in the file, and
|
||
to ensure that they are aligned as required.
|
||
|
||
We handle grouped sections here as well. A section named .foo\$nn
|
||
goes into the output section .foo. All grouped sections are sorted
|
||
by name.
|
||
|
||
Grouped sections for the default sections are handled by the
|
||
default linker script using wildcards, and are sorted by
|
||
sort_sections. */
|
||
|
||
static lang_output_section_statement_type *
|
||
gld_${EMULATION_NAME}_place_orphan (asection *s,
|
||
const char *secname,
|
||
int constraint)
|
||
{
|
||
const char *orig_secname = secname;
|
||
char *dollar = NULL;
|
||
lang_output_section_statement_type *os;
|
||
lang_statement_list_type add_child;
|
||
lang_output_section_statement_type *match_by_name = NULL;
|
||
lang_statement_union_type **pl;
|
||
|
||
/* Look through the script to see where to place this section. */
|
||
if (!bfd_link_relocatable (&link_info)
|
||
&& (dollar = strchr (secname, '\$')) != NULL)
|
||
{
|
||
size_t len = dollar - secname;
|
||
char *newname = xmalloc (len + 1);
|
||
memcpy (newname, secname, len);
|
||
newname[len] = '\0';
|
||
secname = newname;
|
||
}
|
||
|
||
lang_list_init (&add_child);
|
||
|
||
os = NULL;
|
||
if (constraint == 0)
|
||
for (os = lang_output_section_find (secname);
|
||
os != NULL;
|
||
os = next_matching_output_section_statement (os, 0))
|
||
{
|
||
/* If we don't match an existing output section, tell
|
||
lang_insert_orphan to create a new output section. */
|
||
constraint = SPECIAL;
|
||
|
||
if (os->bfd_section != NULL
|
||
&& (os->bfd_section->flags == 0
|
||
|| ((s->flags ^ os->bfd_section->flags)
|
||
& (SEC_LOAD | SEC_ALLOC)) == 0))
|
||
{
|
||
/* We already have an output section statement with this
|
||
name, and its bfd section has compatible flags.
|
||
If the section already exists but does not have any flags set,
|
||
then it has been created by the linker, probably as a result of
|
||
a --section-start command line switch. */
|
||
lang_add_section (&add_child, s, NULL, os);
|
||
break;
|
||
}
|
||
|
||
/* Save unused output sections in case we can match them
|
||
against orphans later. */
|
||
if (os->bfd_section == NULL)
|
||
match_by_name = os;
|
||
}
|
||
|
||
/* If we didn't match an active output section, see if we matched an
|
||
unused one and use that. */
|
||
if (os == NULL && match_by_name)
|
||
{
|
||
lang_add_section (&match_by_name->children, s, NULL, match_by_name);
|
||
return match_by_name;
|
||
}
|
||
|
||
if (os == NULL)
|
||
{
|
||
static struct orphan_save hold[] =
|
||
{
|
||
{ ".text",
|
||
SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
|
||
0, 0, 0, 0 },
|
||
{ ".idata",
|
||
SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
|
||
0, 0, 0, 0 },
|
||
{ ".rdata",
|
||
SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
|
||
0, 0, 0, 0 },
|
||
{ ".data",
|
||
SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
|
||
0, 0, 0, 0 },
|
||
{ ".bss",
|
||
SEC_ALLOC,
|
||
0, 0, 0, 0 }
|
||
};
|
||
enum orphan_save_index
|
||
{
|
||
orphan_text = 0,
|
||
orphan_idata,
|
||
orphan_rodata,
|
||
orphan_data,
|
||
orphan_bss
|
||
};
|
||
static int orphan_init_done = 0;
|
||
struct orphan_save *place;
|
||
lang_output_section_statement_type *after;
|
||
etree_type *address;
|
||
flagword flags;
|
||
asection *nexts;
|
||
|
||
if (!orphan_init_done)
|
||
{
|
||
struct orphan_save *ho;
|
||
for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
|
||
if (ho->name != NULL)
|
||
{
|
||
ho->os = lang_output_section_find (ho->name);
|
||
if (ho->os != NULL && ho->os->flags == 0)
|
||
ho->os->flags = ho->flags;
|
||
}
|
||
orphan_init_done = 1;
|
||
}
|
||
|
||
flags = s->flags;
|
||
if (!bfd_link_relocatable (&link_info))
|
||
{
|
||
nexts = s;
|
||
while ((nexts = bfd_get_next_section_by_name (nexts->owner,
|
||
nexts)))
|
||
if (nexts->output_section == NULL
|
||
&& (nexts->flags & SEC_EXCLUDE) == 0
|
||
&& ((nexts->flags ^ flags) & (SEC_LOAD | SEC_ALLOC)) == 0
|
||
&& (nexts->owner->flags & DYNAMIC) == 0
|
||
&& !bfd_input_just_syms (nexts->owner))
|
||
flags = (((flags ^ SEC_READONLY)
|
||
| (nexts->flags ^ SEC_READONLY))
|
||
^ SEC_READONLY);
|
||
}
|
||
|
||
/* Try to put the new output section in a reasonable place based
|
||
on the section name and section flags. */
|
||
|
||
place = NULL;
|
||
if ((flags & SEC_ALLOC) == 0)
|
||
;
|
||
else if ((flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
|
||
place = &hold[orphan_bss];
|
||
else if ((flags & SEC_READONLY) == 0)
|
||
place = &hold[orphan_data];
|
||
else if ((flags & SEC_CODE) == 0)
|
||
{
|
||
place = (!strncmp (secname, ".idata\$", 7) ? &hold[orphan_idata]
|
||
: &hold[orphan_rodata]);
|
||
}
|
||
else
|
||
place = &hold[orphan_text];
|
||
|
||
after = NULL;
|
||
if (place != NULL)
|
||
{
|
||
if (place->os == NULL)
|
||
place->os = lang_output_section_find (place->name);
|
||
after = place->os;
|
||
if (after == NULL)
|
||
after = lang_output_section_find_by_flags (s, flags, &place->os,
|
||
NULL);
|
||
if (after == NULL)
|
||
/* *ABS* is always the first output section statement. */
|
||
after = &lang_os_list.head->output_section_statement;
|
||
}
|
||
|
||
/* All sections in an executable must be aligned to a page boundary.
|
||
In a relocatable link, just preserve the incoming alignment; the
|
||
address is discarded by lang_insert_orphan in that case, anyway. */
|
||
address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
|
||
os = lang_insert_orphan (s, secname, constraint, after, place, address,
|
||
&add_child);
|
||
if (bfd_link_relocatable (&link_info))
|
||
{
|
||
os->section_alignment = exp_intop (1U << s->alignment_power);
|
||
os->bfd_section->alignment_power = s->alignment_power;
|
||
}
|
||
}
|
||
|
||
/* If the section name has a '\$', sort it with the other '\$'
|
||
sections. */
|
||
for (pl = &os->children.head; *pl != NULL; pl = &(*pl)->header.next)
|
||
{
|
||
lang_input_section_type *ls;
|
||
const char *lname;
|
||
|
||
if ((*pl)->header.type != lang_input_section_enum)
|
||
continue;
|
||
|
||
ls = &(*pl)->input_section;
|
||
|
||
lname = bfd_section_name (ls->section);
|
||
if (strchr (lname, '\$') != NULL
|
||
&& (dollar == NULL || strcmp (orig_secname, lname) < 0))
|
||
break;
|
||
}
|
||
|
||
if (add_child.head != NULL)
|
||
{
|
||
*add_child.tail = *pl;
|
||
*pl = add_child.head;
|
||
}
|
||
|
||
return os;
|
||
}
|
||
|
||
static bfd_boolean
|
||
gld_${EMULATION_NAME}_open_dynamic_archive
|
||
(const char *arch ATTRIBUTE_UNUSED,
|
||
search_dirs_type *search,
|
||
lang_input_statement_type *entry)
|
||
{
|
||
static const struct
|
||
{
|
||
const char * format;
|
||
bfd_boolean use_prefix;
|
||
}
|
||
libname_fmt [] =
|
||
{
|
||
/* Preferred explicit import library for dll's. */
|
||
{ "lib%s.dll.a", FALSE },
|
||
/* Alternate explicit import library for dll's. */
|
||
{ "%s.dll.a", FALSE },
|
||
/* "libfoo.a" could be either an import lib or a static lib.
|
||
For backwards compatibility, libfoo.a needs to precede
|
||
libfoo.dll and foo.dll in the search. */
|
||
{ "lib%s.a", FALSE },
|
||
/* The 'native' spelling of an import lib name is "foo.lib". */
|
||
{ "%s.lib", FALSE },
|
||
/* PR 22948 - Check for an import library. */
|
||
{ "lib%s.lib", FALSE },
|
||
#ifdef DLL_SUPPORT
|
||
/* Try "<prefix>foo.dll" (preferred dll name, if specified). */
|
||
{ "%s%s.dll", TRUE },
|
||
#endif
|
||
/* Try "libfoo.dll" (default preferred dll name). */
|
||
{ "lib%s.dll", FALSE },
|
||
/* Finally try 'native' dll name "foo.dll". */
|
||
{ "%s.dll", FALSE },
|
||
/* Note: If adding more formats to this table, make sure to check to
|
||
see if their length is longer than libname_fmt[0].format, and if
|
||
so, update the call to xmalloc() below. */
|
||
{ NULL, FALSE }
|
||
};
|
||
static unsigned int format_max_len = 0;
|
||
const char * filename;
|
||
char * full_string;
|
||
char * base_string;
|
||
unsigned int i;
|
||
|
||
|
||
if (! entry->flags.maybe_archive || entry->flags.full_name_provided)
|
||
return FALSE;
|
||
|
||
filename = entry->filename;
|
||
|
||
if (format_max_len == 0)
|
||
/* We need to allow space in the memory that we are going to allocate
|
||
for the characters in the format string. Since the format array is
|
||
static we only need to calculate this information once. In theory
|
||
this value could also be computed statically, but this introduces
|
||
the possibility for a discrepancy and hence a possible memory
|
||
corruption. The lengths we compute here will be too long because
|
||
they will include any formating characters (%s) in the strings, but
|
||
this will not matter. */
|
||
for (i = 0; libname_fmt[i].format; i++)
|
||
if (format_max_len < strlen (libname_fmt[i].format))
|
||
format_max_len = strlen (libname_fmt[i].format);
|
||
|
||
full_string = xmalloc (strlen (search->name)
|
||
+ strlen (filename)
|
||
+ format_max_len
|
||
#ifdef DLL_SUPPORT
|
||
+ (pe_dll_search_prefix
|
||
? strlen (pe_dll_search_prefix) : 0)
|
||
#endif
|
||
/* Allow for the terminating NUL and for the path
|
||
separator character that is inserted between
|
||
search->name and the start of the format string. */
|
||
+ 2);
|
||
|
||
sprintf (full_string, "%s/", search->name);
|
||
base_string = full_string + strlen (full_string);
|
||
|
||
for (i = 0; libname_fmt[i].format; i++)
|
||
{
|
||
#ifdef DLL_SUPPORT
|
||
if (libname_fmt[i].use_prefix)
|
||
{
|
||
if (!pe_dll_search_prefix)
|
||
continue;
|
||
sprintf (base_string, libname_fmt[i].format, pe_dll_search_prefix, filename);
|
||
}
|
||
else
|
||
#endif
|
||
sprintf (base_string, libname_fmt[i].format, filename);
|
||
|
||
if (ldfile_try_open_bfd (full_string, entry))
|
||
break;
|
||
}
|
||
|
||
if (!libname_fmt[i].format)
|
||
{
|
||
free (full_string);
|
||
return FALSE;
|
||
}
|
||
|
||
entry->filename = full_string;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static int
|
||
gld_${EMULATION_NAME}_find_potential_libraries
|
||
(char *name, lang_input_statement_type *entry)
|
||
{
|
||
return ldfile_open_file_search (name, entry, "", ".lib");
|
||
}
|
||
|
||
static char *
|
||
gld_${EMULATION_NAME}_get_script (int *isfile)
|
||
EOF
|
||
# Scripts compiled in.
|
||
# sed commands to quote an ld script as a C string.
|
||
sc="-f stringify.sed"
|
||
|
||
fragment <<EOF
|
||
{
|
||
*isfile = 0;
|
||
|
||
if (bfd_link_relocatable (&link_info) && config.build_constructors)
|
||
return
|
||
EOF
|
||
sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
|
||
echo ' ; else if (bfd_link_relocatable (&link_info)) return' >> e${EMULATION_NAME}.c
|
||
sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
|
||
echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
|
||
sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
|
||
echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
|
||
sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
|
||
if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then
|
||
echo ' ; else if (link_info.pei386_auto_import == 1 && (MERGE_RDATA_V2 || link_info.pei386_runtime_pseudo_reloc != 2)) return' >> e${EMULATION_NAME}.c
|
||
sed $sc ldscripts/${EMULATION_NAME}.xa >> e${EMULATION_NAME}.c
|
||
fi
|
||
echo ' ; else return' >> e${EMULATION_NAME}.c
|
||
sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
|
||
echo '; }' >> e${EMULATION_NAME}.c
|
||
|
||
fragment <<EOF
|
||
|
||
|
||
struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
|
||
{
|
||
gld_${EMULATION_NAME}_before_parse,
|
||
syslib_default,
|
||
hll_default,
|
||
gld_${EMULATION_NAME}_after_parse,
|
||
gld_${EMULATION_NAME}_after_open,
|
||
after_check_relocs_default,
|
||
after_allocation_default,
|
||
set_output_arch_default,
|
||
ldemul_default_target,
|
||
gld_${EMULATION_NAME}_before_allocation,
|
||
gld_${EMULATION_NAME}_get_script,
|
||
"${EMULATION_NAME}",
|
||
"${OUTPUT_FORMAT}",
|
||
gld_${EMULATION_NAME}_finish,
|
||
NULL, /* Create output section statements. */
|
||
gld_${EMULATION_NAME}_open_dynamic_archive,
|
||
gld_${EMULATION_NAME}_place_orphan,
|
||
gld_${EMULATION_NAME}_set_symbols,
|
||
NULL, /* parse_args */
|
||
gld${EMULATION_NAME}_add_options,
|
||
gld${EMULATION_NAME}_handle_option,
|
||
gld_${EMULATION_NAME}_unrecognized_file,
|
||
gld_${EMULATION_NAME}_list_options,
|
||
gld_${EMULATION_NAME}_recognized_file,
|
||
gld_${EMULATION_NAME}_find_potential_libraries,
|
||
NULL, /* new_vers_pattern. */
|
||
NULL, /* extra_map_file_text. */
|
||
${LDEMUL_EMIT_CTF_EARLY-NULL},
|
||
${LDEMUL_EXAMINE_STRTAB_FOR_CTF-NULL}
|
||
};
|
||
EOF
|