mirror of
https://sourceware.org/git/binutils-gdb.git
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1707 lines
51 KiB
Plaintext
1707 lines
51 KiB
Plaintext
# This shell script emits a C file. -*- C -*-
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# It does some substitutions.
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test -z "${ENTRY}" && ENTRY="_mainCRTStartup"
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if [ -z "$MACHINE" ]; then
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OUTPUT_ARCH=${ARCH}
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else
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OUTPUT_ARCH=${ARCH}:${MACHINE}
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fi
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rm -f e${EMULATION_NAME}.c
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(echo;echo;echo;echo;echo)>e${EMULATION_NAME}.c # there, now line numbers match ;-)
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cat >>e${EMULATION_NAME}.c <<EOF
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/* This file is part of GLD, the Gnu Linker.
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Copyright 2006 Free Software Foundation, Inc.
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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 2 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, MA 02110-1301, USA.
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Written by Kai Tietz, OneVision Software GmbH&CoKg. */
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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 "bfd.h"
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#include "sysdep.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 "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 "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: This is a BFD internal header file, and we should not be
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using it here. */
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#include "../bfd/libcoff.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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#else
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#undef NT_EXE_IMAGE_BASE
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#define NT_EXE_IMAGE_BASE 0x00010000
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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 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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#ifdef DLL_SUPPORT
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static int pep_enable_stdcall_fixup = -1; /* 0=disable 1=enable. */
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static char * pep_out_def_filename = NULL;
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static char * pep_implib_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 void
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gld_${EMULATION_NAME}_before_parse (void)
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{
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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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config.dynamic_link = 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 = -1;
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#if (PE_DEF_SUBSYSTEM == 9) || (PE_DEF_SUBSYSTEM == 2)
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lang_default_entry ("_WinMainCRTStartup");
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#else
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lang_default_entry ("${ENTRY}");
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#endif
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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_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_IMPLIB_FILENAME,
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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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};
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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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#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-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
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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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{"out-implib", required_argument, NULL, OPTION_IMPLIB_FILENAME},
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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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#endif
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{NULL, no_argument, NULL, 0}
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};
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*longopts = 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. */
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typedef struct
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{
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void *ptr;
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int size;
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int value;
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char *symbol;
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int inited;
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} definfo;
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#define D(field,symbol,def) {&pep.field,sizeof(pep.field), def, symbol,0}
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static definfo init[] =
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{
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/* imagebase must be first */
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#define IMAGEBASEOFF 0
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D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE),
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#define DLLOFF 1
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{&dll, sizeof(dll), 0, "__dll__", 0},
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#define MSIMAGEBASEOFF 2
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D(ImageBase,"__ImageBase", NT_EXE_IMAGE_BASE),
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D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT),
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D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT),
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D(MajorOperatingSystemVersion,"__major_os_version__", 4),
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D(MinorOperatingSystemVersion,"__minor_os_version__", 0),
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D(MajorImageVersion,"__major_image_version__", 0),
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D(MinorImageVersion,"__minor_image_version__", 0),
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D(MajorSubsystemVersion,"__major_subsystem_version__", 5),
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D(MinorSubsystemVersion,"__minor_subsystem_version__", 2),
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D(Subsystem,"__subsystem__", ${SUBSYSTEM}),
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D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000),
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D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000),
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D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000),
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D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000),
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D(LoaderFlags,"__loader_flags__", 0x0),
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{ NULL, 0, 0, NULL, 0 }
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};
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static void
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gld_${EMULATION_NAME}_list_options (FILE *file)
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{
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fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n"));
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fprintf (file, _(" --dll Set image base to the default for DLLs\n"));
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fprintf (file, _(" --file-alignment <size> Set file alignment\n"));
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fprintf (file, _(" --heap <size> Set initial size of the heap\n"));
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fprintf (file, _(" --image-base <address> Set start address of the executable\n"));
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fprintf (file, _(" --major-image-version <number> Set version number of the executable\n"));
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fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n"));
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fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
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fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n"));
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fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n"));
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fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
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fprintf (file, _(" --section-alignment <size> Set section alignment\n"));
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fprintf (file, _(" --stack <size> Set size of the initial stack\n"));
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fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n"));
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fprintf (file, _(" --support-old-code Support interworking with old code\n"));
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#ifdef DLL_SUPPORT
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fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n"));
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fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n"));
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fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n"));
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fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n"));
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fprintf (file, _(" --exclude-libs lib,lib,... Exclude libraries from automatic export\n"));
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fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n"));
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fprintf (file, _(" --kill-at Remove @nn from exported symbols\n"));
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fprintf (file, _(" --out-implib <file> Generate import library\n"));
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fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n"));
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fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports.\n"));
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fprintf (file, _(" --compat-implib Create backward compatible import libs;\n\
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create __imp_<SYMBOL> as well.\n"));
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fprintf (file, _(" --enable-auto-image-base Automatically choose image base for DLLs\n\
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unless user specifies one\n"));
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fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n"));
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fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll without\n\
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an importlib, use <string><basename>.dll\n\
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in preference to lib<basename>.dll \n"));
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fprintf (file, _(" --enable-auto-import Do sophistcated linking of _sym to\n\
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__imp_sym for DATA references\n"));
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fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n"));
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fprintf (file, _(" --enable-runtime-pseudo-reloc Work around auto-import limitations by\n\
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adding pseudo-relocations resolved at\n\
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runtime.\n"));
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fprintf (file, _(" --disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for\n\
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auto-imported DATA.\n"));
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fprintf (file, _(" --enable-extra-pep-debug Enable verbose debug output when building\n\
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or linking to DLLs (esp. auto-import)\n"));
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#endif
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}
|
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|
||
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static void
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set_pep_name (char *name, long val)
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{
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int i;
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|
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/* Find the name and set it. */
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for (i = 0; init[i].ptr; i++)
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{
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if (strcmp (name, init[i].symbol) == 0)
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{
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init[i].value = val;
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init[i].inited = 1;
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if (strcmp (name,"__image_base__") == 0)
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set_pep_name ("__ImageBase", val);
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return;
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}
|
||
}
|
||
abort ();
|
||
}
|
||
|
||
|
||
static void
|
||
set_pep_subsystem (void)
|
||
{
|
||
const char *sver;
|
||
const char *entry;
|
||
const char *initial_symbol_char;
|
||
char *end;
|
||
int len;
|
||
int i;
|
||
int subsystem;
|
||
unsigned long temp_subsystem;
|
||
static const struct
|
||
{
|
||
const char *name;
|
||
const int value;
|
||
const char *entry;
|
||
}
|
||
v[] =
|
||
{
|
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{ "native", 1, "NtProcessStartup" },
|
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{ "windows", 2, "WinMainCRTStartup" },
|
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{ "console", 3, "mainCRTStartup" },
|
||
{ "posix", 7, "__PosixProcessStartup"},
|
||
{ "wince", 9, "_WinMainCRTStartup" },
|
||
{ "xbox", 14, "mainCRTStartup" },
|
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{ NULL, 0, NULL }
|
||
};
|
||
/* Entry point name for arbitrary subsystem numbers. */
|
||
static const char default_entry[] = "mainCRTStartup";
|
||
|
||
/* 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')
|
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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;
|
||
|
||
/* If no match, use the default. */
|
||
if (v[i].name != NULL)
|
||
entry = v[i].entry;
|
||
else
|
||
entry = default_entry;
|
||
|
||
/* Use this subsystem. */
|
||
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 (_("%P%F: invalid subsystem type %s\n"), optarg);
|
||
return;
|
||
}
|
||
|
||
entry = v[i].entry;
|
||
subsystem = v[i].value;
|
||
}
|
||
|
||
set_pep_name ("__subsystem__", subsystem);
|
||
|
||
initial_symbol_char = ${INITIAL_SYMBOL_CHAR};
|
||
if (*initial_symbol_char != '\0')
|
||
{
|
||
char *alc_entry;
|
||
|
||
/* lang_default_entry expects its argument to be permanently
|
||
allocated, so we don't free this string. */
|
||
alc_entry = xmalloc (strlen (initial_symbol_char)
|
||
+ strlen (entry)
|
||
+ 1);
|
||
strcpy (alc_entry, initial_symbol_char);
|
||
strcat (alc_entry, entry);
|
||
entry = alc_entry;
|
||
}
|
||
|
||
lang_default_entry (entry);
|
||
|
||
return;
|
||
}
|
||
|
||
|
||
static void
|
||
set_pep_value (char *name)
|
||
{
|
||
char *end;
|
||
|
||
set_pep_name (name, strtoul (optarg, &end, 0));
|
||
|
||
if (end == optarg)
|
||
einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg);
|
||
|
||
optarg = end;
|
||
}
|
||
|
||
|
||
static void
|
||
set_pep_stack_heap (char *resname, char *comname)
|
||
{
|
||
set_pep_value (resname);
|
||
|
||
if (*optarg == ',')
|
||
{
|
||
optarg++;
|
||
set_pep_value (comname);
|
||
}
|
||
else if (*optarg)
|
||
einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg);
|
||
}
|
||
|
||
|
||
static bfd_boolean
|
||
gld${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)
|
||
{
|
||
/* xgettext:c-format */
|
||
fprintf (stderr, _("%s: Can't open base file %s\n"),
|
||
program_name, optarg);
|
||
xexit (1);
|
||
}
|
||
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;
|
||
#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, 0);
|
||
break;
|
||
case OPTION_EXCLUDE_LIBS:
|
||
pep_dll_add_excludes (optarg, 1);
|
||
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_IMPLIB_FILENAME:
|
||
pep_implib_filename = xstrdup (optarg);
|
||
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 = 1;
|
||
break;
|
||
case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC:
|
||
link_info.pei386_runtime_pseudo_reloc = 0;
|
||
break;
|
||
case OPTION_ENABLE_EXTRA_PE_DEBUG:
|
||
pep_dll_extra_pe_debug = 1;
|
||
break;
|
||
#endif
|
||
}
|
||
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 0x61300000 + ((hash << 16) & 0x0FFC0000);
|
||
}
|
||
#endif
|
||
|
||
/* Assign values to the special symbols before the linker script is
|
||
read. */
|
||
|
||
static void
|
||
gld_${EMULATION_NAME}_set_symbols (void)
|
||
{
|
||
/* Run through and invent symbols for all the
|
||
names and insert the defaults. */
|
||
int j;
|
||
lang_statement_list_type *save;
|
||
|
||
if (!init[IMAGEBASEOFF].inited)
|
||
{
|
||
if (link_info.relocatable)
|
||
init[IMAGEBASEOFF].value = 0;
|
||
else if (init[DLLOFF].value || (link_info.shared && !link_info.pie))
|
||
#ifdef DLL_SUPPORT
|
||
init[IMAGEBASEOFF].value = (pep_enable_auto_image_base) ?
|
||
compute_dll_image_base (output_filename) : NT_DLL_IMAGE_BASE;
|
||
#else
|
||
init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
|
||
#endif
|
||
else
|
||
init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
|
||
init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value;
|
||
}
|
||
|
||
/* Don't do any symbol assignments if this is a relocatable link. */
|
||
if (link_info.relocatable)
|
||
return;
|
||
|
||
/* Glue the assignments into the abs section. */
|
||
save = stat_ptr;
|
||
|
||
stat_ptr = &(abs_output_section->children);
|
||
|
||
for (j = 0; init[j].ptr; j++)
|
||
{
|
||
long val = init[j].value;
|
||
lang_assignment_statement_type *rv;
|
||
rv = lang_add_assignment (exp_assop ('=', init[j].symbol,
|
||
exp_intop (val)));
|
||
if (init[j].size == sizeof (short))
|
||
*(short *) init[j].ptr = val;
|
||
else if (init[j].size == sizeof (int))
|
||
*(int *) init[j].ptr = val;
|
||
else if (init[j].size == sizeof (long))
|
||
*(long *) init[j].ptr = val;
|
||
/* This might be a long long or other special type. */
|
||
else if (init[j].size == sizeof (bfd_vma))
|
||
*(bfd_vma *) init[j].ptr = val;
|
||
else abort ();
|
||
if (j == IMAGEBASEOFF)
|
||
image_base_statement = rv;
|
||
}
|
||
/* Restore the pointer. */
|
||
stat_ptr = save;
|
||
|
||
if (pep.FileAlignment > pep.SectionAlignment)
|
||
{
|
||
einfo (_("%P: warning, file alignment > section alignment.\n"));
|
||
}
|
||
}
|
||
|
||
/* This is called after the linker script and the command line options
|
||
have been read. */
|
||
|
||
static void
|
||
gld_${EMULATION_NAME}_after_parse (void)
|
||
{
|
||
/* The Windows libraries are designed for the linker to treat the
|
||
entry point as an undefined symbol. Otherwise, the .obj that
|
||
defines mainCRTStartup is brought in because it is the first
|
||
encountered in libc.lib and it has other symbols in it which will
|
||
be pulled in by the link process. To avoid this, we act as
|
||
though the user specified -u with the entry point symbol.
|
||
|
||
This function is called after the linker script and command line
|
||
options have been read, so at this point we know the right entry
|
||
point. This function is called before the input files are
|
||
opened, so registering the symbol as undefined will make a
|
||
difference. */
|
||
|
||
if (! link_info.relocatable && entry_symbol.name != NULL)
|
||
ldlang_add_undef (entry_symbol.name);
|
||
}
|
||
|
||
/* pep-dll.c directly accesses pep_data_import_dll,
|
||
so it must be defined outside of #ifdef DLL_SUPPORT.
|
||
Note - this variable is deliberately not initialised.
|
||
This allows it to be treated as a common varaible, and only
|
||
exist in one incarnation in a multiple target enabled linker. */
|
||
char * pep_data_import_dll;
|
||
|
||
#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;
|
||
|
||
sl = strlen (string);
|
||
if (h->type == bfd_link_hash_defined
|
||
&& strncmp (h->root.string, 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 == '@');
|
||
/* For now, don't try to fixup fastcall symbols. */
|
||
|
||
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 /* + lead_at */);
|
||
at = strchr (cname, '@');
|
||
*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 int
|
||
make_import_fixup (arelent *rel, asection *s)
|
||
{
|
||
struct bfd_symbol *sym = *rel->sym_ptr_ptr;
|
||
char addend[4];
|
||
|
||
if (pep_dll_extra_pe_debug)
|
||
printf ("arelent: %s@%#lx: add=%li\n", sym->name,
|
||
(long) rel->address, (long) rel->addend);
|
||
|
||
if (! bfd_get_section_contents (s->owner, s, addend, rel->address, sizeof (addend)))
|
||
einfo (_("%C: Cannot get section contents - auto-import exception\n"),
|
||
s->owner, s, rel->address);
|
||
|
||
pep_create_import_fixup (rel, s, bfd_get_32 (s->owner, addend));
|
||
|
||
return 1;
|
||
}
|
||
|
||
static void
|
||
pep_find_data_imports (void)
|
||
{
|
||
struct bfd_link_hash_entry *undef, *sym;
|
||
|
||
if (link_info.pei386_auto_import == 0)
|
||
return;
|
||
|
||
for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
|
||
{
|
||
if (undef->type == bfd_link_hash_undefined)
|
||
{
|
||
/* C++ symbols are *long*. */
|
||
char buf[4096];
|
||
|
||
if (pep_dll_extra_pe_debug)
|
||
printf ("%s:%s\n", __FUNCTION__, undef->root.string);
|
||
|
||
sprintf (buf, "__imp_%s", undef->root.string);
|
||
|
||
sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);
|
||
|
||
if (sym && sym->type == bfd_link_hash_defined)
|
||
{
|
||
bfd *b = sym->u.def.section->owner;
|
||
asymbol **symbols;
|
||
int nsyms, symsize, i;
|
||
|
||
if (link_info.pei386_auto_import == -1)
|
||
info_msg (_("Info: resolving %s by linking to %s (auto-import)\n"),
|
||
undef->root.string, buf);
|
||
|
||
symsize = bfd_get_symtab_upper_bound (b);
|
||
symbols = xmalloc (symsize);
|
||
nsyms = bfd_canonicalize_symtab (b, symbols);
|
||
|
||
for (i = 0; i < nsyms; i++)
|
||
{
|
||
if (! CONST_STRNEQ (symbols[i]->name, "__head_"))
|
||
continue;
|
||
|
||
if (pep_dll_extra_pe_debug)
|
||
printf ("->%s\n", symbols[i]->name);
|
||
|
||
pep_data_import_dll = (char*) (symbols[i]->name +
|
||
sizeof ("__head_") - 1);
|
||
break;
|
||
}
|
||
|
||
pep_walk_relocs_of_symbol (&link_info, undef->root.string,
|
||
make_import_fixup);
|
||
|
||
/* Let's differentiate it somehow from defined. */
|
||
undef->type = bfd_link_hash_defweak;
|
||
/* We replace original name with __imp_ prefixed, this
|
||
1) may trash memory 2) leads to duplicate symbol generation.
|
||
Still, IMHO it's better than having name poluted. */
|
||
undef->root.string = sym->root.string;
|
||
undef->u.def.value = sym->u.def.value;
|
||
undef->u.def.section = sym->u.def.section;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
static bfd_boolean
|
||
pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
|
||
{
|
||
if (pep_dll_extra_pe_debug)
|
||
printf ("+%s\n", h->string);
|
||
|
||
return TRUE;
|
||
}
|
||
#endif /* DLL_SUPPORT */
|
||
|
||
|
||
static void
|
||
gld_${EMULATION_NAME}_after_open (void)
|
||
{
|
||
#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
|
||
|
||
/* 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 (output_bfd) == NULL || coff_data (output_bfd)->pe == 0)
|
||
einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"), output_bfd);
|
||
|
||
pe_data (output_bfd)->pe_opthdr = pep;
|
||
pe_data (output_bfd)->dll = init[DLLOFF].value;
|
||
pe_data (output_bfd)->real_flags |= real_flags;
|
||
|
||
#ifdef DLL_SUPPORT
|
||
if (pep_enable_stdcall_fixup) /* -1=warn or 1=disable */
|
||
pep_fixup_stdcalls ();
|
||
|
||
pep_process_import_defs (output_bfd, & link_info);
|
||
|
||
pep_find_data_imports ();
|
||
|
||
#ifndef TARGET_IS_i386pep
|
||
if (link_info.shared)
|
||
#else
|
||
if (!link_info.relocatable)
|
||
#endif
|
||
pep_dll_build_sections (output_bfd, &link_info);
|
||
|
||
#ifndef TARGET_IS_i386pep
|
||
else
|
||
pep_exe_build_sections (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 symsize;
|
||
long relsize;
|
||
asymbol **symbols;
|
||
arelent **relocs;
|
||
int nrelocs;
|
||
|
||
symsize = bfd_get_symtab_upper_bound (is->the_bfd);
|
||
if (symsize < 1)
|
||
break;
|
||
relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
|
||
if (relsize < 1)
|
||
break;
|
||
|
||
symbols = xmalloc (symsize);
|
||
symsize = bfd_canonicalize_symtab (is->the_bfd, symbols);
|
||
if (symsize < 0)
|
||
{
|
||
einfo ("%X%P: unable to process symbols: %E");
|
||
return;
|
||
}
|
||
|
||
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");
|
||
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 (strcmp (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 && strcmp (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 && strcmp (pnt, ".obj") == 0)
|
||
continue;
|
||
|
||
if (strcmp (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 && (strcmp (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)
|
||
{
|
||
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 (init[i].symbol, 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 (strcmp (ext, ".def") == 0 || strcmp (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", 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 (_("%P%F: 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.shared = 1;
|
||
|
||
if (pep_def_file->base_address != (bfd_vma)(-1))
|
||
{
|
||
pep.ImageBase =
|
||
pe_data (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_assop ('=', "__image_base__", exp_intop (pep.ImageBase));
|
||
}
|
||
|
||
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)
|
||
{
|
||
#ifdef DLL_SUPPORT
|
||
#ifdef TARGET_IS_i386pep
|
||
pep_dll_id_target ("pei-x86-64");
|
||
#endif
|
||
if (bfd_get_format (entry->the_bfd) == bfd_object)
|
||
{
|
||
char fbuf[LD_PATHMAX + 1];
|
||
const char *ext;
|
||
|
||
if (REALPATH (entry->filename, fbuf) == NULL)
|
||
strncpy (fbuf, entry->filename, sizeof (fbuf));
|
||
|
||
ext = fbuf + strlen (fbuf) - 4;
|
||
|
||
if (strcmp (ext, ".dll") == 0 || strcmp (ext, ".DLL") == 0)
|
||
return pep_implied_import_dll (fbuf);
|
||
}
|
||
#endif
|
||
return FALSE;
|
||
}
|
||
|
||
static void
|
||
gld_${EMULATION_NAME}_finish (void)
|
||
{
|
||
finish_default ();
|
||
|
||
#ifdef DLL_SUPPORT
|
||
if (link_info.shared
|
||
|| (!link_info.relocatable && pep_def_file->num_exports != 0))
|
||
{
|
||
pep_dll_fill_sections (output_bfd, &link_info);
|
||
if (pep_implib_filename)
|
||
pep_dll_generate_implib (pep_def_file, pep_implib_filename);
|
||
}
|
||
|
||
if (pep_out_def_filename)
|
||
pep_dll_generate_def_file (pep_out_def_filename);
|
||
#endif /* DLL_SUPPORT */
|
||
|
||
/* I don't know where .idata gets set as code, but it shouldn't be. */
|
||
{
|
||
asection *asec = bfd_get_section_by_name (output_bfd, ".idata");
|
||
|
||
if (asec)
|
||
{
|
||
asec->flags &= ~SEC_CODE;
|
||
asec->flags |= SEC_DATA;
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
/* Place an orphan section.
|
||
|
||
We use this to put sections in a reasonable place in the file, and
|
||
to ensure that they are aligned as required.
|
||
|
||
We handle grouped sections here as well. A section named .foo$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 bfd_boolean
|
||
gld_${EMULATION_NAME}_place_orphan (asection *s)
|
||
{
|
||
const char *secname;
|
||
const char *orig_secname;
|
||
char *dollar = NULL;
|
||
lang_output_section_statement_type *os;
|
||
lang_statement_list_type add_child;
|
||
|
||
secname = bfd_get_section_name (s->owner, s);
|
||
|
||
/* Look through the script to see where to place this section. */
|
||
orig_secname = secname;
|
||
if (!link_info.relocatable
|
||
&& (dollar = strchr (secname, '$')) != NULL)
|
||
{
|
||
size_t len = dollar - orig_secname;
|
||
char *newname = xmalloc (len + 1);
|
||
memcpy (newname, orig_secname, len);
|
||
newname[len] = '\0';
|
||
secname = newname;
|
||
}
|
||
|
||
os = lang_output_section_find (secname);
|
||
|
||
lang_list_init (&add_child);
|
||
|
||
if (os != NULL
|
||
&& (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, if any, 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, os);
|
||
}
|
||
else
|
||
{
|
||
static struct orphan_save hold[] =
|
||
{
|
||
{ ".text",
|
||
SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
|
||
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_rodata,
|
||
orphan_data,
|
||
orphan_bss
|
||
};
|
||
static int orphan_init_done = 0;
|
||
struct orphan_save *place;
|
||
lang_output_section_statement_type *after;
|
||
etree_type *address;
|
||
|
||
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;
|
||
}
|
||
|
||
/* Try to put the new output section in a reasonable place based
|
||
on the section name and section flags. */
|
||
|
||
place = NULL;
|
||
if ((s->flags & SEC_ALLOC) == 0)
|
||
;
|
||
else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
|
||
place = &hold[orphan_bss];
|
||
else if ((s->flags & SEC_READONLY) == 0)
|
||
place = &hold[orphan_data];
|
||
else if ((s->flags & SEC_CODE) == 0)
|
||
place = &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, &place->os, NULL);
|
||
if (after == NULL)
|
||
/* *ABS* is always the first output section statement. */
|
||
after = (&lang_output_section_statement.head
|
||
->output_section_statement);
|
||
}
|
||
|
||
/* Choose a unique name for the section. This will be needed if the
|
||
same section name appears in the input file with different
|
||
loadable or allocatable characteristics. */
|
||
if (bfd_get_section_by_name (output_bfd, secname) != NULL)
|
||
{
|
||
static int count = 1;
|
||
secname = bfd_get_unique_section_name (output_bfd, secname, &count);
|
||
if (secname == NULL)
|
||
einfo ("%F%P: place_orphan failed: %E\n");
|
||
}
|
||
|
||
/* All sections in an executable must be aligned to a page boundary. */
|
||
address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
|
||
os = lang_insert_orphan (s, secname, after, place, address, &add_child);
|
||
}
|
||
|
||
{
|
||
lang_statement_union_type **pl = &os->children.head;
|
||
|
||
if (dollar != NULL)
|
||
{
|
||
bfd_boolean found_dollar;
|
||
|
||
/* The section name has a '$'. Sort it with the other '$'
|
||
sections. */
|
||
found_dollar = FALSE;
|
||
for ( ; *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, '$') == NULL)
|
||
{
|
||
if (found_dollar)
|
||
break;
|
||
}
|
||
else
|
||
{
|
||
found_dollar = TRUE;
|
||
if (strcmp (orig_secname, lname) < 0)
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (add_child.head != NULL)
|
||
{
|
||
add_child.head->header.next = *pl;
|
||
*pl = add_child.head;
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static bfd_boolean
|
||
gld_${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 },
|
||
#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->is_archive)
|
||
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"
|
||
|
||
cat >>e${EMULATION_NAME}.c <<EOF
|
||
{
|
||
*isfile = 0;
|
||
|
||
if (link_info.relocatable && config.build_constructors)
|
||
return
|
||
EOF
|
||
sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
|
||
echo ' ; else if (link_info.relocatable) return' >> e${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${EMULATION_NAME}.c
|
||
echo ' ; else return' >> e${EMULATION_NAME}.c
|
||
sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
|
||
echo '; }' >> e${EMULATION_NAME}.c
|
||
|
||
cat >>e${EMULATION_NAME}.c <<EOF
|
||
|
||
|
||
struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
|
||
{
|
||
gld_${EMULATION_NAME}_before_parse,
|
||
syslib_default,
|
||
hll_default,
|
||
gld_${EMULATION_NAME}_after_parse,
|
||
gld_${EMULATION_NAME}_after_open,
|
||
after_allocation_default,
|
||
set_output_arch_default,
|
||
ldemul_default_target,
|
||
gld_${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. */
|
||
};
|
||
EOF
|