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https://sourceware.org/git/binutils-gdb.git
synced 2024-12-15 04:31:49 +08:00
317ff0084b
This patch deals with the auto-import feature. There are 2 versions
of this feature: the original one, which was piggybacked on the OS
loader with an optional help from the runtime (--enable-auto-import
--enable-runtime-pseudo-reloc-v1) and is still the one mostly
documented in the sources and manual; the enhanced one by Kai Tietz,
which is entirely piggybacked on the runtime (--enable-auto-import
--enable-runtime-pseudo-reloc-v2) and is the default for Mingw and
Cygwin nowadays.
The implementation is inefficient because of pe[p]_find_data_imports:
for every undefined symbol, the function walks the entire set of
relocations for all the input files and does a direct name comparison
for each of them.
This is easily fixable by using a hash-based map for v1 and a simple
hash table for v2. This patch leaves v1 alone and only changes v2.
It also factors out pe[p]_find_data_imports into a common function,
removes old cruft left and right, and attempts to better separate
the implementations of v1 and v2 in the code.
ld/
* emultempl/pe.em (U_SIZE): Delete.
(pe_data_import_dll): Likewise.
(make_import_fixup): Return void, take 4th parameter and pass it down
in call to pe_create_import_fixup.
(pe_find_data_imports): Move to...
(gld_${EMULATION_NAME}_after_open): Run the stdcall fixup pass after
the auto-import pass and add a guard before running the latter.
* emultempl/pep.em (U_SIZE): Delete.
(pep_data_import_dll): Likewise.
(make_import_fixup): Return void, take 4th parameter and pass it down
in call to pe_create_import_fixup.
(pep_find_data_imports): Move to...
(gld_${EMULATION_NAME}_after_open): Run the stdcall fixup pass after
the auto-import pass and add a guard before running the latter.
* pe-dll.c (runtime_pseudp_reloc_v2_init): Change type to bfd_boolean.
(pe_walk_relocs_of_symbol): Rename into...
(pe_walk_relocs): ...this. Add 2 more parameters,4th parameter to the
callback prototype and pass 4th parameter in calls to the callback.
If the import hash table is present, invoke the callback on the reloc
if the symbol name is in the table.
(pe_find_data_imports): ...here. Take 2 parameters. Build an import
hash table for the pseudo-relocation support version 2. When it is
built, walk the relocations only once at the end; when it is not, do
not build a fixup when the symbol isn't part of an import table.
Issue the associated warning only after a first fixup is built.
(tmp_seq2): Delete.
(make_singleton_name_imp): Likewise.
(make_import_fixup_mark): Return const char * and a stable string.
(make_import_fixup_entry): Do not deal with the pseudo-relocation
support version 2.
(make_runtime_pseudo_reloc): Factor out code and fix formatting.
(pe_create_import_fixup): Add 5th parameter. Clearly separate the
pseudo-relocation support version 2 from the rest. Fix formatting.
* pe-dll.h (pe_walk_relocs_of_symbol): Delete.
(pe_find_data_imports): Declare.
(pe_create_import_fixup): Add 5th parameter.
* pep-dll.c (pe_data_import_dll): Delete.
(pe_find_data_imports): Define.
(pe_walk_relocs_of_symbol): Delete.
* pep-dll.h (pep_walk_relocs_of_symbol): Delete.
(pep_find_data_imports): Declare.
(pep_create_import_fixup): Add 5th parameter.
* ld.texinfo (--enable-auto-import): Adjust to new implementation.
2173 lines
67 KiB
Plaintext
2173 lines
67 KiB
Plaintext
# This shell script emits a C file. -*- C -*-
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# It does some substitutions.
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if [ -z "$MACHINE" ]; then
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OUTPUT_ARCH=${ARCH}
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else
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OUTPUT_ARCH=${ARCH}:${MACHINE}
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fi
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case ${target} in
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*-*-cygwin*)
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move_default_addr_high=1
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;;
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*)
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move_default_addr_high=0;
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;;
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esac
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rm -f e${EMULATION_NAME}.c
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(echo;echo;echo;echo;echo)>e${EMULATION_NAME}.c # there, now line numbers match ;-)
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fragment <<EOF
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/* Copyright (C) 2006-2018 Free Software Foundation, Inc.
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Written by Kai Tietz, OneVision Software GmbH&CoKg.
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This file is part of the GNU Binutils.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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/* For WINDOWS_XP64 and higher */
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/* Based on pe.em, but modified for 64 bit support. */
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#define TARGET_IS_${EMULATION_NAME}
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#define COFF_IMAGE_WITH_PE
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#define COFF_WITH_PE
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#define COFF_WITH_pex64
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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 "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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/* FIXME: See bfd/peXXigen.c for why we include an architecture specific
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header in generic PE code. */
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#include "coff/x86_64.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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#undef AOUTSZ
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#define AOUTSZ PEPAOUTSZ
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#define PEAOUTHDR PEPAOUTHDR
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#include "deffile.h"
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#include "pep-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 ${OVERRIDE_SECTION_ALIGNMENT}
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#endif
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#ifdef TARGET_IS_i386pep
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#define DLL_SUPPORT
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#endif
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#if defined(TARGET_IS_i386pep) || ! defined(DLL_SUPPORT)
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#define PE_DEF_SUBSYSTEM 3
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#undef NT_EXE_IMAGE_BASE
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#define NT_EXE_IMAGE_BASE \
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((bfd_vma) (${move_default_addr_high} ? 0x100400000LL \
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: 0x400000LL))
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#undef NT_DLL_IMAGE_BASE
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#define NT_DLL_IMAGE_BASE \
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((bfd_vma) (${move_default_addr_high} ? 0x400000000LL \
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: 0x10000000LL))
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#undef NT_DLL_AUTO_IMAGE_BASE
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#define NT_DLL_AUTO_IMAGE_BASE \
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((bfd_vma) (${move_default_addr_high} ? 0x400000000LL \
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: 0x61300000LL))
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#undef NT_DLL_AUTO_IMAGE_MASK
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#define NT_DLL_AUTO_IMAGE_MASK \
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((bfd_vma) (${move_default_addr_high} ? 0x1ffff0000LL \
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: 0x0ffc0000LL))
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#else
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#undef NT_EXE_IMAGE_BASE
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#define NT_EXE_IMAGE_BASE \
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((bfd_vma) (${move_default_addr_high} ? 0x100010000LL \
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: 0x10000LL))
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#undef NT_DLL_IMAGE_BASE
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#define NT_DLL_IMAGE_BASE \
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((bfd_vma) (${move_default_addr_high} ? 0x110000000LL \
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: 0x10000000LL))
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#undef NT_DLL_AUTO_IMAGE_BASE
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#define NT_DLL_AUTO_IMAGE_BASE \
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((bfd_vma) (${move_default_addr_high} ? 0x120000000LL \
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: 0x61300000LL))
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#undef NT_DLL_AUTO_IMAGE_MASK
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#define NT_DLL_AUTO_IMAGE_MASK \
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((bfd_vma) (${move_default_addr_high} ? 0x0ffff0000LL \
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: 0x0ffc0000LL))
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#undef PE_DEF_SECTION_ALIGNMENT
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#define PE_DEF_SUBSYSTEM 2
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#undef PE_DEF_FILE_ALIGNMENT
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#define PE_DEF_FILE_ALIGNMENT 0x00000200
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#define PE_DEF_SECTION_ALIGNMENT 0x00000400
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#endif
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static struct internal_extra_pe_aouthdr pep;
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static int dll;
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static int pep_subsystem = ${SUBSYSTEM};
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static flagword real_flags = IMAGE_FILE_LARGE_ADDRESS_AWARE;
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static int support_old_code = 0;
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static lang_assignment_statement_type *image_base_statement = 0;
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static unsigned short pe_dll_characteristics = 0;
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static bfd_boolean insert_timestamp = TRUE;
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static const char *emit_build_id;
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#ifdef DLL_SUPPORT
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static int pep_enable_stdcall_fixup = 1; /* 0=disable 1=enable (default). */
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static char * pep_out_def_filename = NULL;
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static int pep_enable_auto_image_base = 0;
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static char * pep_dll_search_prefix = NULL;
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#endif
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extern const char *output_filename;
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static int is_underscoring (void)
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{
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int u = 0;
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if (pep_leading_underscore != -1)
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return pep_leading_underscore;
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if (!bfd_get_target_info ("${OUTPUT_FORMAT}", NULL, NULL, &u, NULL))
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bfd_get_target_info ("${RELOCATEABLE_OUTPUT_FORMAT}", NULL, NULL, &u, NULL);
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if (u == -1)
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abort ();
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pep_leading_underscore = (u != 0 ? 1 : 0);
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return pep_leading_underscore;
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}
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static void
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gld_${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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link_info.pei386_auto_import = 1;
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link_info.pei386_runtime_pseudo_reloc = 2; /* Use by default version 2. */
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#endif
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}
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/* PE format extra command line options. */
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/* Used for setting flags in the PE header. */
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enum options
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{
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OPTION_BASE_FILE = 300 + 1,
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OPTION_DLL,
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OPTION_FILE_ALIGNMENT,
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OPTION_IMAGE_BASE,
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OPTION_MAJOR_IMAGE_VERSION,
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OPTION_MAJOR_OS_VERSION,
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OPTION_MAJOR_SUBSYSTEM_VERSION,
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OPTION_MINOR_IMAGE_VERSION,
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OPTION_MINOR_OS_VERSION,
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OPTION_MINOR_SUBSYSTEM_VERSION,
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OPTION_SECTION_ALIGNMENT,
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OPTION_STACK,
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OPTION_SUBSYSTEM,
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OPTION_HEAP,
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OPTION_SUPPORT_OLD_CODE,
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OPTION_OUT_DEF,
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OPTION_EXPORT_ALL,
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OPTION_EXCLUDE_SYMBOLS,
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OPTION_EXCLUDE_ALL_SYMBOLS,
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OPTION_KILL_ATS,
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OPTION_STDCALL_ALIASES,
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OPTION_ENABLE_STDCALL_FIXUP,
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OPTION_DISABLE_STDCALL_FIXUP,
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OPTION_WARN_DUPLICATE_EXPORTS,
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OPTION_IMP_COMPAT,
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OPTION_ENABLE_AUTO_IMAGE_BASE,
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OPTION_DISABLE_AUTO_IMAGE_BASE,
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OPTION_DLL_SEARCH_PREFIX,
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OPTION_NO_DEFAULT_EXCLUDES,
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OPTION_DLL_ENABLE_AUTO_IMPORT,
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OPTION_DLL_DISABLE_AUTO_IMPORT,
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OPTION_ENABLE_EXTRA_PE_DEBUG,
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OPTION_EXCLUDE_LIBS,
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OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC,
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OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC,
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OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2,
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OPTION_EXCLUDE_MODULES_FOR_IMPLIB,
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OPTION_USE_NUL_PREFIXED_IMPORT_TABLES,
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OPTION_NO_LEADING_UNDERSCORE,
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OPTION_LEADING_UNDERSCORE,
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OPTION_ENABLE_LONG_SECTION_NAMES,
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OPTION_DISABLE_LONG_SECTION_NAMES,
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OPTION_HIGH_ENTROPY_VA,
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OPTION_DYNAMIC_BASE,
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OPTION_FORCE_INTEGRITY,
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OPTION_NX_COMPAT,
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OPTION_NO_ISOLATION,
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OPTION_NO_SEH,
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OPTION_NO_BIND,
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OPTION_WDM_DRIVER,
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OPTION_INSERT_TIMESTAMP,
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OPTION_NO_INSERT_TIMESTAMP,
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OPTION_TERMINAL_SERVER_AWARE,
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OPTION_BUILD_ID
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};
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static void
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gld${EMULATION_NAME}_add_options
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(int ns ATTRIBUTE_UNUSED,
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char **shortopts ATTRIBUTE_UNUSED,
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int nl,
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struct option **longopts,
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int nrl ATTRIBUTE_UNUSED,
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struct option **really_longopts ATTRIBUTE_UNUSED)
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{
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static const struct option xtra_long[] =
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{
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/* PE options */
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{"base-file", required_argument, NULL, OPTION_BASE_FILE},
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{"dll", no_argument, NULL, OPTION_DLL},
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{"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
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{"heap", required_argument, NULL, OPTION_HEAP},
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{"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
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{"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
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{"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
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{"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
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{"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
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{"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
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{"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
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{"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
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{"stack", required_argument, NULL, OPTION_STACK},
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{"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
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{"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
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{"use-nul-prefixed-import-tables", no_argument, NULL,
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OPTION_USE_NUL_PREFIXED_IMPORT_TABLES},
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{"no-leading-underscore", no_argument, NULL, OPTION_NO_LEADING_UNDERSCORE},
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{"leading-underscore", no_argument, NULL, OPTION_LEADING_UNDERSCORE},
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#ifdef DLL_SUPPORT
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/* getopt allows abbreviations, so we do this to stop it
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from treating -o as an abbreviation for this option. */
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{"output-def", required_argument, NULL, OPTION_OUT_DEF},
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{"output-def", required_argument, NULL, OPTION_OUT_DEF},
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{"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
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{"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
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{"exclude-all-symbols", no_argument, NULL, OPTION_EXCLUDE_ALL_SYMBOLS},
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{"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
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{"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB},
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{"kill-at", no_argument, NULL, OPTION_KILL_ATS},
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{"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
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{"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
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{"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
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{"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
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/* getopt() allows abbreviations, so we do this to stop it from
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treating -c as an abbreviation for these --compat-implib. */
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{"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
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{"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
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{"enable-auto-image-base", no_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
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{"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
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{"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
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{"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
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{"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
|
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{"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
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{"enable-extra-pep-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
|
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{"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC},
|
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{"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC},
|
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{"enable-runtime-pseudo-reloc-v2", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2},
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#endif
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{"enable-long-section-names", no_argument, NULL, OPTION_ENABLE_LONG_SECTION_NAMES},
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{"disable-long-section-names", no_argument, NULL, OPTION_DISABLE_LONG_SECTION_NAMES},
|
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{"high-entropy-va", no_argument, NULL, OPTION_HIGH_ENTROPY_VA},
|
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{"dynamicbase",no_argument, NULL, OPTION_DYNAMIC_BASE},
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{"forceinteg", no_argument, NULL, OPTION_FORCE_INTEGRITY},
|
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{"nxcompat", no_argument, NULL, OPTION_NX_COMPAT},
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{"no-isolation", no_argument, NULL, OPTION_NO_ISOLATION},
|
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{"no-seh", no_argument, NULL, OPTION_NO_SEH},
|
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{"no-bind", no_argument, NULL, OPTION_NO_BIND},
|
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{"wdmdriver", no_argument, NULL, OPTION_WDM_DRIVER},
|
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{"tsaware", no_argument, NULL, OPTION_TERMINAL_SERVER_AWARE},
|
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{"insert-timestamp", no_argument, NULL, OPTION_INSERT_TIMESTAMP},
|
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{"no-insert-timestamp", no_argument, NULL, OPTION_NO_INSERT_TIMESTAMP},
|
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{"build-id", optional_argument, NULL, OPTION_BUILD_ID},
|
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{NULL, no_argument, NULL, 0}
|
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};
|
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|
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*longopts
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= xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
|
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memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
|
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}
|
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|
||
/* PE/WIN32; added routines to get the subsystem type, heap and/or stack
|
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parameters which may be input from the command line. */
|
||
|
||
typedef struct
|
||
{
|
||
void *ptr;
|
||
int size;
|
||
bfd_vma 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 on target's
|
||
settings. */
|
||
bfd_boolean is_c_symbol;
|
||
} definfo;
|
||
|
||
#define GET_INIT_SYMBOL_NAME(IDX) \
|
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(init[(IDX)].symbol \
|
||
+ ((!init[(IDX)].is_c_symbol || is_underscoring () == 1) ? 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) {&pep.field, sizeof (pep.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__", 0, FALSE),
|
||
D(MinorImageVersion,"__minor_image_version__", 0, FALSE),
|
||
D(MajorSubsystemVersion,"__major_subsystem_version__", 5, FALSE),
|
||
D(MinorSubsystemVersion,"__minor_subsystem_version__", 2, 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, _(" --[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 Automatically choose image base for DLLs\n\
|
||
unless user specifies one\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-pep-debug Enable verbose debug output when building\n\
|
||
or linking to DLLs (esp. auto-import)\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, _(" --high-entropy-va Image is compatible with 64-bit address space\n\
|
||
layout randomization (ASLR)\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"));
|
||
#endif
|
||
}
|
||
|
||
|
||
static void
|
||
set_pep_name (char *name, bfd_vma 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_pep_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)
|
||
{
|
||
entry = "DllMainCRTStartup";
|
||
}
|
||
else
|
||
{
|
||
for (i = 0; v[i].entry; i++)
|
||
if (v[i].value == pep_subsystem)
|
||
break;
|
||
|
||
/* If no match, use the default. */
|
||
if (v[i].entry != NULL)
|
||
entry = v[i].entry;
|
||
else
|
||
entry = default_entry;
|
||
}
|
||
|
||
/* Now we check target's default for getting proper symbol_char. */
|
||
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_pep_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_pep_name ("__major_subsystem_version__",
|
||
strtoul (sver + 1, &end, 0));
|
||
if (*end == '.')
|
||
set_pep_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. */
|
||
pep_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;
|
||
}
|
||
|
||
pep_subsystem = v[i].value;
|
||
}
|
||
|
||
set_pep_name ("__subsystem__", pep_subsystem);
|
||
|
||
return;
|
||
}
|
||
|
||
|
||
static void
|
||
set_pep_value (char *name)
|
||
{
|
||
char *end;
|
||
|
||
set_pep_name (name, (bfd_vma) strtoull (optarg, &end, 0));
|
||
|
||
if (end == optarg)
|
||
einfo (_("%F%P: invalid hex number for PE parameter '%s'\n"), optarg);
|
||
|
||
optarg = end;
|
||
}
|
||
|
||
|
||
static void
|
||
set_pep_stack_heap (char *resname, char *comname)
|
||
{
|
||
set_pep_value (resname);
|
||
|
||
if (*optarg == ',')
|
||
{
|
||
optarg++;
|
||
set_pep_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)
|
||
{
|
||
is_underscoring ();
|
||
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_pep_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
|
||
break;
|
||
case OPTION_STACK:
|
||
set_pep_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
|
||
break;
|
||
case OPTION_SUBSYSTEM:
|
||
set_pep_subsystem ();
|
||
break;
|
||
case OPTION_MAJOR_OS_VERSION:
|
||
set_pep_value ("__major_os_version__");
|
||
break;
|
||
case OPTION_MINOR_OS_VERSION:
|
||
set_pep_value ("__minor_os_version__");
|
||
break;
|
||
case OPTION_MAJOR_SUBSYSTEM_VERSION:
|
||
set_pep_value ("__major_subsystem_version__");
|
||
break;
|
||
case OPTION_MINOR_SUBSYSTEM_VERSION:
|
||
set_pep_value ("__minor_subsystem_version__");
|
||
break;
|
||
case OPTION_MAJOR_IMAGE_VERSION:
|
||
set_pep_value ("__major_image_version__");
|
||
break;
|
||
case OPTION_MINOR_IMAGE_VERSION:
|
||
set_pep_value ("__minor_image_version__");
|
||
break;
|
||
case OPTION_FILE_ALIGNMENT:
|
||
set_pep_value ("__file_alignment__");
|
||
break;
|
||
case OPTION_SECTION_ALIGNMENT:
|
||
set_pep_value ("__section_alignment__");
|
||
break;
|
||
case OPTION_DLL:
|
||
set_pep_name ("__dll__", 1);
|
||
break;
|
||
case OPTION_IMAGE_BASE:
|
||
set_pep_value ("__image_base__");
|
||
break;
|
||
case OPTION_SUPPORT_OLD_CODE:
|
||
support_old_code = 1;
|
||
break;
|
||
case OPTION_USE_NUL_PREFIXED_IMPORT_TABLES:
|
||
pep_use_nul_prefixed_import_tables = TRUE;
|
||
break;
|
||
case OPTION_NO_LEADING_UNDERSCORE:
|
||
pep_leading_underscore = 0;
|
||
break;
|
||
case OPTION_LEADING_UNDERSCORE:
|
||
pep_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:
|
||
pep_out_def_filename = xstrdup (optarg);
|
||
break;
|
||
case OPTION_EXPORT_ALL:
|
||
pep_dll_export_everything = 1;
|
||
break;
|
||
case OPTION_EXCLUDE_SYMBOLS:
|
||
pep_dll_add_excludes (optarg, EXCLUDESYMS);
|
||
break;
|
||
case OPTION_EXCLUDE_ALL_SYMBOLS:
|
||
pep_dll_exclude_all_symbols = 1;
|
||
break;
|
||
case OPTION_EXCLUDE_LIBS:
|
||
pep_dll_add_excludes (optarg, EXCLUDELIBS);
|
||
break;
|
||
case OPTION_EXCLUDE_MODULES_FOR_IMPLIB:
|
||
pep_dll_add_excludes (optarg, EXCLUDEFORIMPLIB);
|
||
break;
|
||
case OPTION_KILL_ATS:
|
||
pep_dll_kill_ats = 1;
|
||
break;
|
||
case OPTION_STDCALL_ALIASES:
|
||
pep_dll_stdcall_aliases = 1;
|
||
break;
|
||
case OPTION_ENABLE_STDCALL_FIXUP:
|
||
pep_enable_stdcall_fixup = 1;
|
||
break;
|
||
case OPTION_DISABLE_STDCALL_FIXUP:
|
||
pep_enable_stdcall_fixup = 0;
|
||
break;
|
||
case OPTION_WARN_DUPLICATE_EXPORTS:
|
||
pep_dll_warn_dup_exports = 1;
|
||
break;
|
||
case OPTION_IMP_COMPAT:
|
||
pep_dll_compat_implib = 1;
|
||
break;
|
||
case OPTION_ENABLE_AUTO_IMAGE_BASE:
|
||
pep_enable_auto_image_base = 1;
|
||
break;
|
||
case OPTION_DISABLE_AUTO_IMAGE_BASE:
|
||
pep_enable_auto_image_base = 0;
|
||
break;
|
||
case OPTION_DLL_SEARCH_PREFIX:
|
||
pep_dll_search_prefix = xstrdup (optarg);
|
||
break;
|
||
case OPTION_NO_DEFAULT_EXCLUDES:
|
||
pep_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 = 2;
|
||
break;
|
||
case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC:
|
||
link_info.pei386_runtime_pseudo_reloc = 0;
|
||
break;
|
||
case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2:
|
||
link_info.pei386_runtime_pseudo_reloc = 2;
|
||
break;
|
||
case OPTION_ENABLE_EXTRA_PE_DEBUG:
|
||
pep_dll_extra_pe_debug = 1;
|
||
break;
|
||
#endif
|
||
case OPTION_ENABLE_LONG_SECTION_NAMES:
|
||
pep_use_coff_long_section_names = 1;
|
||
break;
|
||
case OPTION_DISABLE_LONG_SECTION_NAMES:
|
||
pep_use_coff_long_section_names = 0;
|
||
break;
|
||
/* Get DLLCharacteristics bits */
|
||
case OPTION_HIGH_ENTROPY_VA:
|
||
pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_HIGH_ENTROPY_VA;
|
||
break;
|
||
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_pep_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 bfd_vma
|
||
compute_dll_image_base (const char *ofile)
|
||
{
|
||
bfd_vma hash = (bfd_vma) strhash (ofile);
|
||
return NT_DLL_AUTO_IMAGE_BASE + ((hash << 16) & NT_DLL_AUTO_IMAGE_MASK);
|
||
}
|
||
#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 = (pep_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++)
|
||
{
|
||
bfd_vma 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 = (short) val;
|
||
else if (init[j].size == sizeof (int))
|
||
*(int *) init[j].ptr = (int) val;
|
||
else if (init[j].size == sizeof (long))
|
||
*(long *) init[j].ptr = (long) 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 (pep.FileAlignment > pep.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 *pep_undef_found_sym;
|
||
|
||
static bfd_boolean
|
||
pep_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] == '@')
|
||
{
|
||
pep_undef_found_sym = h;
|
||
return FALSE;
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
static void
|
||
pep_fixup_stdcalls (void)
|
||
{
|
||
static int gave_warning_message = 0;
|
||
struct bfd_link_hash_entry *undef, *sym;
|
||
|
||
if (pep_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)
|
||
{
|
||
char* at = strchr (undef->root.string, '@');
|
||
int lead_at = (*undef->root.string == '@');
|
||
if (lead_at)
|
||
at = strchr (undef->root.string + 1, '@');
|
||
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 (undef->root.string);
|
||
|
||
if (lead_at)
|
||
*cname = '_';
|
||
at = strchr (cname, '@');
|
||
if (at)
|
||
*at = 0;
|
||
sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1);
|
||
|
||
if (sym && sym->type == bfd_link_hash_defined)
|
||
{
|
||
undef->type = bfd_link_hash_defined;
|
||
undef->u.def.value = sym->u.def.value;
|
||
undef->u.def.section = sym->u.def.section;
|
||
|
||
if (pep_enable_stdcall_fixup == -1)
|
||
{
|
||
einfo (_("warning: resolving %s by linking to %s\n"),
|
||
undef->root.string, cname);
|
||
if (! gave_warning_message)
|
||
{
|
||
gave_warning_message = 1;
|
||
einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
|
||
einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
|
||
}
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* The symbol is a cdecl symbol, so we look for stdcall
|
||
symbols - which means scanning the whole symbol table. */
|
||
pep_undef_found_sym = 0;
|
||
bfd_link_hash_traverse (link_info.hash, pep_undef_cdecl_match,
|
||
(char *) undef->root.string);
|
||
sym = pep_undef_found_sym;
|
||
if (sym)
|
||
{
|
||
undef->type = bfd_link_hash_defined;
|
||
undef->u.def.value = sym->u.def.value;
|
||
undef->u.def.section = sym->u.def.section;
|
||
|
||
if (pep_enable_stdcall_fixup == -1)
|
||
{
|
||
einfo (_("warning: resolving %s by linking to %s\n"),
|
||
undef->root.string, sym->root.string);
|
||
if (! gave_warning_message)
|
||
{
|
||
gave_warning_message = 1;
|
||
einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
|
||
einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
make_import_fixup (arelent *rel, asection *s, char *name, const char *symname)
|
||
{
|
||
struct bfd_symbol *sym = *rel->sym_ptr_ptr;
|
||
char addend[8];
|
||
bfd_vma _addend = 0;
|
||
int suc = 0;
|
||
|
||
if (pep_dll_extra_pe_debug)
|
||
printf ("arelent: %s@%#lx: add=%li\n", sym->name,
|
||
(unsigned long) rel->address, (long) rel->addend);
|
||
|
||
memset (addend, 0, sizeof (addend));
|
||
switch ((rel->howto->bitsize))
|
||
{
|
||
case 8:
|
||
suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 1);
|
||
if (suc && rel->howto->pc_relative)
|
||
_addend = bfd_get_signed_8 (s->owner, addend);
|
||
else if (suc)
|
||
_addend = bfd_get_8 (s->owner, addend);
|
||
break;
|
||
case 16:
|
||
suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 2);
|
||
if (suc && rel->howto->pc_relative)
|
||
_addend = bfd_get_signed_16 (s->owner, addend);
|
||
else if (suc)
|
||
_addend = bfd_get_16 (s->owner, addend);
|
||
break;
|
||
case 32:
|
||
suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 4);
|
||
if (suc && rel->howto->pc_relative)
|
||
_addend = bfd_get_signed_32 (s->owner, addend);
|
||
else if (suc)
|
||
_addend = bfd_get_32 (s->owner, addend);
|
||
break;
|
||
case 64:
|
||
suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 8);
|
||
if (suc)
|
||
_addend = bfd_get_64 (s->owner, addend);
|
||
break;
|
||
}
|
||
if (! suc)
|
||
einfo (_("%P: %C: cannot get section contents - auto-import exception\n"),
|
||
s->owner, s, rel->address);
|
||
|
||
if (pep_dll_extra_pe_debug)
|
||
{
|
||
printf ("import of 0x%lx(0x%lx) sec_addr=0x%lx",
|
||
(long) _addend, (long) rel->addend, (long) rel->address);
|
||
if (rel->howto->pc_relative)
|
||
printf (" pcrel");
|
||
printf (" %d bit rel.\n", (int) rel->howto->bitsize);
|
||
}
|
||
|
||
pep_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 enttry */
|
||
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 ();
|
||
|
||
is_underscoring ();
|
||
#ifdef DLL_SUPPORT
|
||
if (pep_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 (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 = pep;
|
||
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 (pep_use_coff_long_section_names < 0 && link_info.strip == strip_none)
|
||
{
|
||
if (bfd_link_relocatable (&link_info))
|
||
pep_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)
|
||
{
|
||
pep_use_coff_long_section_names = 1;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
pep_output_file_set_long_section_names (link_info.output_bfd);
|
||
|
||
#ifdef DLL_SUPPORT
|
||
pep_process_import_defs (link_info.output_bfd, &link_info);
|
||
|
||
if (link_info.pei386_auto_import) /* -1=warn or 1=enable */
|
||
pep_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 (pep_enable_stdcall_fixup) /* -1=warn or 1=enable */
|
||
pep_fixup_stdcalls ();
|
||
|
||
#ifndef TARGET_IS_i386pep
|
||
if (bfd_link_pic (&link_info))
|
||
#else
|
||
if (!bfd_link_relocatable (&link_info))
|
||
#endif
|
||
pep_dll_build_sections (link_info.output_bfd, &link_info);
|
||
|
||
#ifndef TARGET_IS_i386pep
|
||
else
|
||
pep_exe_build_sections (link_info.output_bfd, &link_info);
|
||
#endif
|
||
#endif /* DLL_SUPPORT */
|
||
|
||
{
|
||
/* 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;
|
||
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);
|
||
is->the_bfd->my_archive->filename = 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);
|
||
is->the_bfd->filename = new_name;
|
||
|
||
new_name = xmalloc (strlen (is->filename) + 3);
|
||
sprintf (new_name, "%s.%c", is->filename, seq);
|
||
is->filename = new_name;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
gld_${EMULATION_NAME}_before_allocation (void)
|
||
{
|
||
is_underscoring ();
|
||
before_allocation_default ();
|
||
}
|
||
|
||
#ifdef DLL_SUPPORT
|
||
/* This is called when an input file isn't recognized as a BFD. We
|
||
check here for .DEF files and pull them in automatically. */
|
||
|
||
static int
|
||
saw_option (char *option)
|
||
{
|
||
int i;
|
||
|
||
is_underscoring ();
|
||
|
||
for (i = 0; init[i].ptr; i++)
|
||
if (strcmp (GET_INIT_SYMBOL_NAME (i), option) == 0)
|
||
return init[i].inited;
|
||
return 0;
|
||
}
|
||
#endif /* DLL_SUPPORT */
|
||
|
||
static bfd_boolean
|
||
gld_${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)
|
||
{
|
||
pep_def_file = def_file_parse (entry->filename, pep_def_file);
|
||
|
||
if (pep_def_file)
|
||
{
|
||
int i, buflen=0, len;
|
||
char *buf;
|
||
|
||
for (i = 0; i < pep_def_file->num_exports; i++)
|
||
{
|
||
len = strlen (pep_def_file->exports[i].internal_name);
|
||
if (buflen < len + 2)
|
||
buflen = len + 2;
|
||
}
|
||
|
||
buf = xmalloc (buflen);
|
||
|
||
for (i = 0; i < pep_def_file->num_exports; i++)
|
||
{
|
||
struct bfd_link_hash_entry *h;
|
||
|
||
sprintf (buf, "%s%s", U (""),
|
||
pep_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, pep_def_file); */
|
||
if (pep_def_file->is_dll == 1)
|
||
link_info.type = type_dll;
|
||
|
||
if (pep_def_file->base_address != (bfd_vma)(-1))
|
||
{
|
||
pep.ImageBase
|
||
= pe_data (link_info.output_bfd)->pe_opthdr.ImageBase
|
||
= init[IMAGEBASEOFF].value
|
||
= pep_def_file->base_address;
|
||
init[IMAGEBASEOFF].inited = 1;
|
||
if (image_base_statement)
|
||
image_base_statement->exp
|
||
= exp_assign ("__image_base__", exp_intop (pep.ImageBase),
|
||
FALSE);
|
||
}
|
||
|
||
if (pep_def_file->stack_reserve != -1
|
||
&& ! saw_option ("__size_of_stack_reserve__"))
|
||
{
|
||
pep.SizeOfStackReserve = pep_def_file->stack_reserve;
|
||
if (pep_def_file->stack_commit != -1)
|
||
pep.SizeOfStackCommit = pep_def_file->stack_commit;
|
||
}
|
||
if (pep_def_file->heap_reserve != -1
|
||
&& ! saw_option ("__size_of_heap_reserve__"))
|
||
{
|
||
pep.SizeOfHeapReserve = pep_def_file->heap_reserve;
|
||
if (pep_def_file->heap_commit != -1)
|
||
pep.SizeOfHeapCommit = pep_def_file->heap_commit;
|
||
}
|
||
return TRUE;
|
||
}
|
||
}
|
||
#endif
|
||
return FALSE;
|
||
}
|
||
|
||
static bfd_boolean
|
||
gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
|
||
{
|
||
is_underscoring ();
|
||
#ifdef DLL_SUPPORT
|
||
#ifdef TARGET_IS_i386pep
|
||
pep_dll_id_target ("pei-x86-64");
|
||
#endif
|
||
if (pep_bfd_is_dll (entry->the_bfd))
|
||
return pep_implied_import_dll (entry->filename);
|
||
#endif
|
||
return FALSE;
|
||
}
|
||
|
||
static void
|
||
gld_${EMULATION_NAME}_finish (void)
|
||
{
|
||
is_underscoring ();
|
||
finish_default ();
|
||
|
||
#ifdef DLL_SUPPORT
|
||
if (bfd_link_pic (&link_info)
|
||
|| (!bfd_link_relocatable (&link_info)
|
||
&& pep_def_file->num_exports != 0))
|
||
{
|
||
pep_dll_fill_sections (link_info.output_bfd, &link_info);
|
||
if (command_line.out_implib_filename)
|
||
pep_dll_generate_implib (pep_def_file,
|
||
command_line.out_implib_filename, &link_info);
|
||
}
|
||
|
||
if (pep_out_def_filename)
|
||
pep_dll_generate_def_file (pep_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
|
||
&& nexts->owner->usrdata != NULL
|
||
&& !(((lang_input_statement_type *) nexts->owner->usrdata)
|
||
->flags.just_syms))
|
||
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_output_section_statement.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 = 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_get_section_name (ls->section->owner, 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
|
||
+ (pep_dll_search_prefix
|
||
? strlen (pep_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 (!pep_dll_search_prefix)
|
||
continue;
|
||
sprintf (base_string, libname_fmt[i].format, pep_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 && 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 */
|
||
};
|
||
EOF
|