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7635954182
2016-07-15 Thomas Preud'homme <thomas.preudhomme@arm.com>
bfd/
* elf-bfd.h (elf_backend_filter_implib_symbols): Declare backend hook.
(_bfd_elf_filter_global_symbols): Declare.
* elf.c (_bfd_elf_filter_global_symbols): New function.
* elflink.c (elf_filter_global_symbols): Likewise.
(elf_output_implib): Likewise.
(bfd_elf_final_link): Call above function, failing if it does.
* elfxx-target.h (elf_backend_filter_implib_symbols): Define macro and
default it to NULL.
(elf_backend_copy_indirect_symbol): Fix spacing.
(elf_backend_hide_symbol): Likewise.
(elfNN_bed): Initialize elf_backend_filter_implib_symbols backend hook.
include/
* bfdlink.h (struct bfd_link_info): Declare new ldscript_def and
out_implib_bfd fields.
2016-07-15 Thomas Preud'homme <thomas.preudhomme@arm.com>
Nick Clifton <nickc@redhat.com>
ld/
* emultempl/elf32.em (gld${EMULATION_NAME}_after_open): Open import
library file for writing and initialize implib_bfd field of link_info
structure.
* emultempl/pe.em (pe_implib_filename): Remove variable declaration.
(OPTION_IMPLIB_FILENAME): Remove macro definition.
(gld${EMULATION_NAME}_add_options): Remove --out-implib option.
(gld_${EMULATION_NAME}_list_options): Likewise.
(gld${EMULATION_NAME}_handle_option): Likewise.
(gld_${EMULATION_NAME}_finish): Use command_line.out_implib_filename
instead of pe_implib_filename.
* emultempl/pep.em (pep_implib_filename): Remove variable declaration.
(OPTION_IMPLIB_FILENAME): Remove enumerator.
(gld${EMULATION_NAME}_add_options): Remove --out-implib option.
(gld_${EMULATION_NAME}_list_options): Likewise.
(gld${EMULATION_NAME}_handle_option): Likewise.
(gld_${EMULATION_NAME}_finish): Use command_line.out_implib_filename
instead of pep_implib_filename.
* ld.h (args_type): Declare new out_implib_filename field.
* ld.texinfo (--out-implib): Move documentation to arch-independent
part and rephrase to apply to ELF targets.
* ldexp.c (exp_fold_tree_1): Set ldscript_def field to 1 for symbols
defined in linker scripts.
* ldlex.h (enum option_values): Declare new OPTION_OUT_IMPLIB
enumerator.
* lexsup.c (ld_options): Add entry for new --out-implib switch.
(parse_args): Handle OPTION_OUT_IMPLIB case.
* testsuite/ld-elf/elf.exp (Generate empty import library): New test.
(Generate import library): Likewise.
* testsuite/ld-elf/implib.s: Likewise.
* testsuite/ld-elf/implib.rd: New file.
* testsuite/ld-elf/empty-implib.out: Likewise
2483 lines
78 KiB
Plaintext
2483 lines
78 KiB
Plaintext
# This shell script emits a C file. -*- C -*-
|
||
# It does some substitutions.
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||
if [ -z "$MACHINE" ]; then
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OUTPUT_ARCH=${ARCH}
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else
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OUTPUT_ARCH=${ARCH}:${MACHINE}
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fi
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rm -f e${EMULATION_NAME}.c
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(echo;echo;echo;echo;echo)>e${EMULATION_NAME}.c # there, now line numbers match ;-)
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fragment <<EOF
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/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
|
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|
||
This file is part of the GNU Binutils.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 3 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software
|
||
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
||
MA 02110-1301, USA. */
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||
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/* For WINDOWS_NT */
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/* The original file generated returned different default scripts depending
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on whether certain switches were set, but these switches pertain to the
|
||
Linux system and that particular version of coff. In the NT case, we
|
||
only determine if the subsystem is console or windows in order to select
|
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the correct entry point by default. */
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#define TARGET_IS_${EMULATION_NAME}
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/* Do this before including bfd.h, so we prototype the right functions. */
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#if defined(TARGET_IS_armpe) \
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|| defined(TARGET_IS_arm_epoc_pe) \
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|| defined(TARGET_IS_arm_wince_pe)
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||
#define bfd_arm_allocate_interworking_sections \
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bfd_${EMULATION_NAME}_allocate_interworking_sections
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#define bfd_arm_get_bfd_for_interworking \
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bfd_${EMULATION_NAME}_get_bfd_for_interworking
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#define bfd_arm_process_before_allocation \
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bfd_${EMULATION_NAME}_process_before_allocation
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#endif
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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/i386.h"
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#include "coff/pe.h"
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/* FIXME: These are BFD internal header files, and we should not be
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using it here. */
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#include "../bfd/libcoff.h"
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#include "../bfd/libpei.h"
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#include "deffile.h"
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#include "pe-dll.h"
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#include "safe-ctype.h"
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/* Permit the emulation parameters to override the default section
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alignment by setting OVERRIDE_SECTION_ALIGNMENT. FIXME: This makes
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it seem that include/coff/internal.h should not define
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PE_DEF_SECTION_ALIGNMENT. */
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#if PE_DEF_SECTION_ALIGNMENT != ${OVERRIDE_SECTION_ALIGNMENT:-PE_DEF_SECTION_ALIGNMENT}
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#undef PE_DEF_SECTION_ALIGNMENT
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#define PE_DEF_SECTION_ALIGNMENT ${OVERRIDE_SECTION_ALIGNMENT}
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#endif
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#if defined(TARGET_IS_i386pe) \
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|| defined(TARGET_IS_shpe) \
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|| defined(TARGET_IS_armpe) \
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|| defined(TARGET_IS_arm_epoc_pe) \
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|| defined(TARGET_IS_arm_wince_pe)
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#define DLL_SUPPORT
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#endif
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#if defined(TARGET_IS_i386pe)
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#define DEFAULT_PSEUDO_RELOC_VERSION 2
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#else
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#define DEFAULT_PSEUDO_RELOC_VERSION 1
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#endif
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#if defined(TARGET_IS_i386pe) || ! defined(DLL_SUPPORT)
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#define PE_DEF_SUBSYSTEM 3
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#else
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#undef NT_EXE_IMAGE_BASE
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#undef PE_DEF_SECTION_ALIGNMENT
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#undef PE_DEF_FILE_ALIGNMENT
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#define NT_EXE_IMAGE_BASE 0x00010000
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#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
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#define PE_DEF_SECTION_ALIGNMENT 0x00001000
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#define PE_DEF_SUBSYSTEM 9
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#else
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#define PE_DEF_SECTION_ALIGNMENT 0x00000400
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#define PE_DEF_SUBSYSTEM 2
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#endif
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#define PE_DEF_FILE_ALIGNMENT 0x00000200
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#endif
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static struct internal_extra_pe_aouthdr pe;
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static int dll;
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static int pe_subsystem = ${SUBSYSTEM};
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static flagword real_flags = 0;
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static int support_old_code = 0;
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static char * thumb_entry_symbol = NULL;
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static lang_assignment_statement_type *image_base_statement = 0;
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static unsigned short pe_dll_characteristics = 0;
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static bfd_boolean insert_timestamp = TRUE;
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static const char *emit_build_id;
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#ifdef DLL_SUPPORT
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static int pe_enable_stdcall_fixup = -1; /* 0=disable 1=enable. */
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static char *pe_out_def_filename = NULL;
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static int pe_enable_auto_image_base = 0;
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static unsigned long pe_auto_image_base = 0x61500000;
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static char *pe_dll_search_prefix = NULL;
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#endif
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extern const char *output_filename;
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static int is_underscoring (void)
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{
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int u = 0;
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if (pe_leading_underscore != -1)
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return pe_leading_underscore;
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if (!bfd_get_target_info ("${OUTPUT_FORMAT}", NULL, NULL, &u, NULL))
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bfd_get_target_info ("${RELOCATEABLE_OUTPUT_FORMAT}", NULL, NULL, &u, NULL);
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if (u == -1)
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abort ();
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pe_leading_underscore = (u != 0 ? 1 : 0);
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return pe_leading_underscore;
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}
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static void
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gld_${EMULATION_NAME}_before_parse (void)
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{
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is_underscoring ();
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ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
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output_filename = "${EXECUTABLE_NAME:-a.exe}";
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#ifdef DLL_SUPPORT
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input_flags.dynamic = TRUE;
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config.has_shared = 1;
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EOF
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# Cygwin no longer wants these noisy warnings. Other PE
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# targets might like to consider adding themselves here.
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# See also the mail thread starting here for the reason why
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# merge_rdata defaults to 0 for cygwin:
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# http://cygwin.com/ml/cygwin-apps/2013-04/msg00187.html
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case ${target} in
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*-*-cygwin*)
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default_auto_import=1
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default_merge_rdata=0
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;;
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i[3-7]86-*-mingw* | x86_64-*-mingw*)
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default_auto_import=1
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default_merge_rdata=0
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;;
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*)
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default_auto_import=-1
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default_merge_rdata=1
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;;
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esac
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fragment <<EOF
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link_info.pei386_auto_import = ${default_auto_import};
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/* Use by default version. */
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link_info.pei386_runtime_pseudo_reloc = DEFAULT_PSEUDO_RELOC_VERSION;
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#endif
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}
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/* Indicates if RDATA shall be merged into DATA when pseudo-relocation
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version 2 is used and auto-import is enabled. */
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#define MERGE_RDATA_V2 ${default_merge_rdata}
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/* PE format extra command line options. */
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/* Used for setting flags in the PE header. */
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#define OPTION_BASE_FILE (300 + 1)
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#define OPTION_DLL (OPTION_BASE_FILE + 1)
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#define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1)
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#define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1)
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#define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1)
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#define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1)
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#define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1)
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#define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1)
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#define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1)
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#define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1)
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#define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1)
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#define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1)
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#define OPTION_SUBSYSTEM (OPTION_STACK + 1)
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#define OPTION_HEAP (OPTION_SUBSYSTEM + 1)
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#define OPTION_SUPPORT_OLD_CODE (OPTION_HEAP + 1)
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#define OPTION_OUT_DEF (OPTION_SUPPORT_OLD_CODE + 1)
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#define OPTION_EXPORT_ALL (OPTION_OUT_DEF + 1)
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#define OPTION_EXCLUDE_SYMBOLS (OPTION_EXPORT_ALL + 1)
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#define OPTION_EXCLUDE_ALL_SYMBOLS (OPTION_EXCLUDE_SYMBOLS + 1)
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#define OPTION_KILL_ATS (OPTION_EXCLUDE_ALL_SYMBOLS + 1)
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#define OPTION_STDCALL_ALIASES (OPTION_KILL_ATS + 1)
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#define OPTION_ENABLE_STDCALL_FIXUP (OPTION_STDCALL_ALIASES + 1)
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#define OPTION_DISABLE_STDCALL_FIXUP (OPTION_ENABLE_STDCALL_FIXUP + 1)
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#define OPTION_THUMB_ENTRY (OPTION_DISABLE_STDCALL_FIXUP + 1)
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#define OPTION_WARN_DUPLICATE_EXPORTS (OPTION_THUMB_ENTRY + 1)
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#define OPTION_IMP_COMPAT (OPTION_WARN_DUPLICATE_EXPORTS + 1)
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#define OPTION_ENABLE_AUTO_IMAGE_BASE (OPTION_IMP_COMPAT + 1)
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#define OPTION_DISABLE_AUTO_IMAGE_BASE (OPTION_ENABLE_AUTO_IMAGE_BASE + 1)
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#define OPTION_DLL_SEARCH_PREFIX (OPTION_DISABLE_AUTO_IMAGE_BASE + 1)
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#define OPTION_NO_DEFAULT_EXCLUDES (OPTION_DLL_SEARCH_PREFIX + 1)
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#define OPTION_DLL_ENABLE_AUTO_IMPORT (OPTION_NO_DEFAULT_EXCLUDES + 1)
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#define OPTION_DLL_DISABLE_AUTO_IMPORT (OPTION_DLL_ENABLE_AUTO_IMPORT + 1)
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#define OPTION_ENABLE_EXTRA_PE_DEBUG (OPTION_DLL_DISABLE_AUTO_IMPORT + 1)
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#define OPTION_EXCLUDE_LIBS (OPTION_ENABLE_EXTRA_PE_DEBUG + 1)
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#define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC \
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(OPTION_EXCLUDE_LIBS + 1)
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#define OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC \
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(OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC + 1)
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#define OPTION_LARGE_ADDRESS_AWARE (OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC + 1)
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#define OPTION_DISABLE_LARGE_ADDRESS_AWARE \
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(OPTION_LARGE_ADDRESS_AWARE + 1)
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#define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 \
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(OPTION_DISABLE_LARGE_ADDRESS_AWARE + 1)
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#define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 \
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(OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 + 1)
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#define OPTION_EXCLUDE_MODULES_FOR_IMPLIB \
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(OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 + 1)
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#define OPTION_USE_NUL_PREFIXED_IMPORT_TABLES \
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(OPTION_EXCLUDE_MODULES_FOR_IMPLIB + 1)
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#define OPTION_NO_LEADING_UNDERSCORE (OPTION_USE_NUL_PREFIXED_IMPORT_TABLES + 1)
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#define OPTION_LEADING_UNDERSCORE (OPTION_NO_LEADING_UNDERSCORE + 1)
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#define OPTION_ENABLE_LONG_SECTION_NAMES \
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(OPTION_LEADING_UNDERSCORE + 1)
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#define OPTION_DISABLE_LONG_SECTION_NAMES \
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(OPTION_ENABLE_LONG_SECTION_NAMES + 1)
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/* DLLCharacteristics flags. */
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#define OPTION_DYNAMIC_BASE (OPTION_DISABLE_LONG_SECTION_NAMES + 1)
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#define OPTION_FORCE_INTEGRITY (OPTION_DYNAMIC_BASE + 1)
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#define OPTION_NX_COMPAT (OPTION_FORCE_INTEGRITY + 1)
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#define OPTION_NO_ISOLATION (OPTION_NX_COMPAT + 1)
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#define OPTION_NO_SEH (OPTION_NO_ISOLATION + 1)
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#define OPTION_NO_BIND (OPTION_NO_SEH + 1)
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#define OPTION_WDM_DRIVER (OPTION_NO_BIND + 1)
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#define OPTION_TERMINAL_SERVER_AWARE (OPTION_WDM_DRIVER + 1)
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/* Determinism. */
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#define OPTION_INSERT_TIMESTAMP (OPTION_TERMINAL_SERVER_AWARE + 1)
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#define OPTION_NO_INSERT_TIMESTAMP (OPTION_INSERT_TIMESTAMP + 1)
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#define OPTION_BUILD_ID (OPTION_NO_INSERT_TIMESTAMP + 1)
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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},
|
||
{"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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{"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
|
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{"use-nul-prefixed-import-tables", no_argument, NULL,
|
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OPTION_USE_NUL_PREFIXED_IMPORT_TABLES},
|
||
{"no-leading-underscore", no_argument, NULL, OPTION_NO_LEADING_UNDERSCORE},
|
||
{"leading-underscore", no_argument, NULL, OPTION_LEADING_UNDERSCORE},
|
||
{"insert-timestamp", no_argument, NULL, OPTION_INSERT_TIMESTAMP},
|
||
{"no-insert-timestamp", no_argument, NULL, OPTION_NO_INSERT_TIMESTAMP},
|
||
#ifdef DLL_SUPPORT
|
||
/* getopt allows abbreviations, so we do this to stop it
|
||
from treating -o as an abbreviation for this option. */
|
||
{"output-def", required_argument, NULL, OPTION_OUT_DEF},
|
||
{"output-def", required_argument, NULL, OPTION_OUT_DEF},
|
||
{"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
|
||
{"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
|
||
{"exclude-all-symbols", no_argument, NULL, OPTION_EXCLUDE_ALL_SYMBOLS},
|
||
{"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
|
||
{"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB},
|
||
{"kill-at", no_argument, NULL, OPTION_KILL_ATS},
|
||
{"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
|
||
{"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
|
||
{"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
|
||
{"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
|
||
/* getopt() allows abbreviations, so we do this to stop it from
|
||
treating -c as an abbreviation for these --compat-implib. */
|
||
{"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
|
||
{"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
|
||
{"enable-auto-image-base", optional_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
|
||
{"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
|
||
{"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
|
||
{"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
|
||
{"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
|
||
{"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
|
||
{"enable-extra-pe-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
|
||
{"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC},
|
||
{"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC},
|
||
{"enable-runtime-pseudo-reloc-v1", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1},
|
||
{"enable-runtime-pseudo-reloc-v2", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2},
|
||
#endif
|
||
{"large-address-aware", no_argument, NULL, OPTION_LARGE_ADDRESS_AWARE},
|
||
{"disable-large-address-aware", no_argument, NULL, OPTION_DISABLE_LARGE_ADDRESS_AWARE},
|
||
{"enable-long-section-names", no_argument, NULL, OPTION_ENABLE_LONG_SECTION_NAMES},
|
||
{"disable-long-section-names", no_argument, NULL, OPTION_DISABLE_LONG_SECTION_NAMES},
|
||
{"dynamicbase",no_argument, NULL, OPTION_DYNAMIC_BASE},
|
||
{"forceinteg", no_argument, NULL, OPTION_FORCE_INTEGRITY},
|
||
{"nxcompat", no_argument, NULL, OPTION_NX_COMPAT},
|
||
{"no-isolation", no_argument, NULL, OPTION_NO_ISOLATION},
|
||
{"no-seh", no_argument, NULL, OPTION_NO_SEH},
|
||
{"no-bind", no_argument, NULL, OPTION_NO_BIND},
|
||
{"wdmdriver", no_argument, NULL, OPTION_WDM_DRIVER},
|
||
{"tsaware", no_argument, NULL, OPTION_TERMINAL_SERVER_AWARE},
|
||
{"build-id", optional_argument, NULL, OPTION_BUILD_ID},
|
||
{NULL, no_argument, NULL, 0}
|
||
};
|
||
|
||
*longopts
|
||
= xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
|
||
memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
|
||
}
|
||
|
||
/* PE/WIN32; added routines to get the subsystem type, heap and/or stack
|
||
parameters which may be input from the command line. */
|
||
|
||
typedef struct
|
||
{
|
||
void *ptr;
|
||
int size;
|
||
int value;
|
||
char *symbol;
|
||
int inited;
|
||
/* FALSE for an assembly level symbol and TRUE for a C visible symbol.
|
||
C visible symbols can be prefixed by underscore dependent to target's
|
||
settings. */
|
||
bfd_boolean is_c_symbol;
|
||
} definfo;
|
||
|
||
/* Get symbol name dependent to kind and C visible state of
|
||
underscore. */
|
||
#define GET_INIT_SYMBOL_NAME(IDX) \
|
||
(init[(IDX)].symbol \
|
||
+ ((init[(IDX)].is_c_symbol == FALSE || (is_underscoring () != 0)) ? 0 : 1))
|
||
|
||
/* Decorates the C visible symbol by underscore, if target requires. */
|
||
#define U(CSTR) \
|
||
((is_underscoring () == 0) ? CSTR : "_" CSTR)
|
||
|
||
/* Get size of constant string for a possible underscore prefixed
|
||
C visible symbol. */
|
||
#define U_SIZE(CSTR) \
|
||
(sizeof (CSTR) + (is_underscoring () == 0 ? 0 : 1))
|
||
|
||
#define D(field,symbol,def,usc) {&pe.field, sizeof (pe.field), def, symbol, 0, usc}
|
||
|
||
static definfo init[] =
|
||
{
|
||
/* imagebase must be first */
|
||
#define IMAGEBASEOFF 0
|
||
D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE, FALSE),
|
||
#define DLLOFF 1
|
||
{&dll, sizeof(dll), 0, "__dll__", 0, FALSE},
|
||
#define MSIMAGEBASEOFF 2
|
||
D(ImageBase, "___ImageBase", NT_EXE_IMAGE_BASE, TRUE),
|
||
D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT, FALSE),
|
||
D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT, FALSE),
|
||
D(MajorOperatingSystemVersion,"__major_os_version__", 4, FALSE),
|
||
D(MinorOperatingSystemVersion,"__minor_os_version__", 0, FALSE),
|
||
D(MajorImageVersion,"__major_image_version__", 1, FALSE),
|
||
D(MinorImageVersion,"__minor_image_version__", 0, FALSE),
|
||
#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
|
||
D(MajorSubsystemVersion,"__major_subsystem_version__", 3, FALSE),
|
||
#else
|
||
D(MajorSubsystemVersion,"__major_subsystem_version__", 4, FALSE),
|
||
#endif
|
||
D(MinorSubsystemVersion,"__minor_subsystem_version__", 0, FALSE),
|
||
D(Subsystem,"__subsystem__", ${SUBSYSTEM}, FALSE),
|
||
D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000, FALSE),
|
||
D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000, FALSE),
|
||
D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000, FALSE),
|
||
D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000, FALSE),
|
||
D(LoaderFlags,"__loader_flags__", 0x0, FALSE),
|
||
D(DllCharacteristics, "__dll_characteristics__", 0x0, FALSE),
|
||
{ NULL, 0, 0, NULL, 0 , FALSE}
|
||
};
|
||
|
||
|
||
static void
|
||
gld_${EMULATION_NAME}_list_options (FILE *file)
|
||
{
|
||
fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n"));
|
||
fprintf (file, _(" --dll Set image base to the default for DLLs\n"));
|
||
fprintf (file, _(" --file-alignment <size> Set file alignment\n"));
|
||
fprintf (file, _(" --heap <size> Set initial size of the heap\n"));
|
||
fprintf (file, _(" --image-base <address> Set start address of the executable\n"));
|
||
fprintf (file, _(" --major-image-version <number> Set version number of the executable\n"));
|
||
fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n"));
|
||
fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
|
||
fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n"));
|
||
fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n"));
|
||
fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
|
||
fprintf (file, _(" --section-alignment <size> Set section alignment\n"));
|
||
fprintf (file, _(" --stack <size> Set size of the initial stack\n"));
|
||
fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n"));
|
||
fprintf (file, _(" --support-old-code Support interworking with old code\n"));
|
||
fprintf (file, _(" --[no-]leading-underscore Set explicit symbol underscore prefix mode\n"));
|
||
fprintf (file, _(" --thumb-entry=<symbol> Set the entry point to be Thumb <symbol>\n"));
|
||
fprintf (file, _(" --[no-]insert-timestamp Use a real timestamp rather than zero (default).\n"));
|
||
fprintf (file, _(" This makes binaries non-deterministic\n"));
|
||
#ifdef DLL_SUPPORT
|
||
fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n"));
|
||
fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n"));
|
||
fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n"));
|
||
fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n"));
|
||
fprintf (file, _(" --exclude-all-symbols Exclude all symbols from automatic export\n"));
|
||
fprintf (file, _(" --exclude-libs lib,lib,... Exclude libraries from automatic export\n"));
|
||
fprintf (file, _(" --exclude-modules-for-implib mod,mod,...\n"));
|
||
fprintf (file, _(" Exclude objects, archive members from auto\n"));
|
||
fprintf (file, _(" export, place into import library instead.\n"));
|
||
fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n"));
|
||
fprintf (file, _(" --kill-at Remove @nn from exported symbols\n"));
|
||
fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n"));
|
||
fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports\n"));
|
||
fprintf (file, _(" --compat-implib Create backward compatible import libs;\n\
|
||
create __imp_<SYMBOL> as well.\n"));
|
||
fprintf (file, _(" --enable-auto-image-base[=<address>] Automatically choose image base for DLLs\n\
|
||
(optionally starting with address) unless\n\
|
||
specifically set with --image-base\n"));
|
||
fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n"));
|
||
fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll without\n\
|
||
an importlib, use <string><basename>.dll\n\
|
||
in preference to lib<basename>.dll \n"));
|
||
fprintf (file, _(" --enable-auto-import Do sophisticated linking of _sym to\n\
|
||
__imp_sym for DATA references\n"));
|
||
fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n"));
|
||
fprintf (file, _(" --enable-runtime-pseudo-reloc Work around auto-import limitations by\n\
|
||
adding pseudo-relocations resolved at\n\
|
||
runtime.\n"));
|
||
fprintf (file, _(" --disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for\n\
|
||
auto-imported DATA.\n"));
|
||
fprintf (file, _(" --enable-extra-pe-debug Enable verbose debug output when building\n\
|
||
or linking to DLLs (esp. auto-import)\n"));
|
||
#endif
|
||
fprintf (file, _(" --large-address-aware Executable supports virtual addresses\n\
|
||
greater than 2 gigabytes\n"));
|
||
fprintf (file, _(" --disable-large-address-aware Executable does not support virtual\n\
|
||
addresses greater than 2 gigabytes\n"));
|
||
fprintf (file, _(" --enable-long-section-names Use long COFF section names even in\n\
|
||
executable image files\n"));
|
||
fprintf (file, _(" --disable-long-section-names Never use long COFF section names, even\n\
|
||
in object files\n"));
|
||
fprintf (file, _(" --dynamicbase Image base address may be relocated using\n\
|
||
address space layout randomization (ASLR)\n"));
|
||
fprintf (file, _(" --forceinteg Code integrity checks are enforced\n"));
|
||
fprintf (file, _(" --nxcompat Image is compatible with data execution prevention\n"));
|
||
fprintf (file, _(" --no-isolation Image understands isolation but do not isolate the image\n"));
|
||
fprintf (file, _(" --no-seh Image does not use SEH. No SE handler may\n\
|
||
be called in this image\n"));
|
||
fprintf (file, _(" --no-bind Do not bind this image\n"));
|
||
fprintf (file, _(" --wdmdriver Driver uses the WDM model\n"));
|
||
fprintf (file, _(" --tsaware Image is Terminal Server aware\n"));
|
||
fprintf (file, _(" --build-id[=STYLE] Generate build ID\n"));
|
||
}
|
||
|
||
|
||
static void
|
||
set_pe_name (char *name, long val)
|
||
{
|
||
int i;
|
||
is_underscoring ();
|
||
|
||
/* Find the name and set it. */
|
||
for (i = 0; init[i].ptr; i++)
|
||
{
|
||
if (strcmp (name, GET_INIT_SYMBOL_NAME (i)) == 0)
|
||
{
|
||
init[i].value = val;
|
||
init[i].inited = 1;
|
||
if (strcmp (name,"__image_base__") == 0)
|
||
set_pe_name (U ("__ImageBase"), val);
|
||
return;
|
||
}
|
||
}
|
||
abort ();
|
||
}
|
||
|
||
static void
|
||
set_entry_point (void)
|
||
{
|
||
const char *entry;
|
||
const char *initial_symbol_char;
|
||
int i;
|
||
|
||
static const struct
|
||
{
|
||
const int value;
|
||
const char *entry;
|
||
}
|
||
v[] =
|
||
{
|
||
{ 1, "NtProcessStartup" },
|
||
{ 2, "WinMainCRTStartup" },
|
||
{ 3, "mainCRTStartup" },
|
||
{ 7, "__PosixProcessStartup"},
|
||
{ 9, "WinMainCRTStartup" },
|
||
{14, "mainCRTStartup" },
|
||
{ 0, NULL }
|
||
};
|
||
|
||
/* Entry point name for arbitrary subsystem numbers. */
|
||
static const char default_entry[] = "mainCRTStartup";
|
||
|
||
if (bfd_link_pic (&link_info) || dll)
|
||
{
|
||
#if defined (TARGET_IS_i386pe)
|
||
entry = "DllMainCRTStartup@12";
|
||
#else
|
||
entry = "DllMainCRTStartup";
|
||
#endif
|
||
}
|
||
else
|
||
{
|
||
for (i = 0; v[i].entry; i++)
|
||
if (v[i].value == pe_subsystem)
|
||
break;
|
||
|
||
/* If no match, use the default. */
|
||
if (v[i].entry != NULL)
|
||
entry = v[i].entry;
|
||
else
|
||
entry = default_entry;
|
||
}
|
||
|
||
initial_symbol_char = (is_underscoring () != 0 ? "_" : "");
|
||
|
||
if (*initial_symbol_char != '\0')
|
||
{
|
||
char *alc_entry;
|
||
|
||
/* lang_default_entry expects its argument to be permanently
|
||
allocated, so we don't free this string. */
|
||
alc_entry = xmalloc (strlen (initial_symbol_char)
|
||
+ strlen (entry)
|
||
+ 1);
|
||
strcpy (alc_entry, initial_symbol_char);
|
||
strcat (alc_entry, entry);
|
||
entry = alc_entry;
|
||
}
|
||
|
||
lang_default_entry (entry);
|
||
}
|
||
|
||
static void
|
||
set_pe_subsystem (void)
|
||
{
|
||
const char *sver;
|
||
char *end;
|
||
int len;
|
||
int i;
|
||
unsigned long temp_subsystem;
|
||
static const struct
|
||
{
|
||
const char *name;
|
||
const int value;
|
||
}
|
||
v[] =
|
||
{
|
||
{ "native", 1},
|
||
{ "windows", 2},
|
||
{ "console", 3},
|
||
{ "posix", 7},
|
||
{ "wince", 9},
|
||
{ "xbox", 14},
|
||
{ NULL, 0 }
|
||
};
|
||
|
||
/* Check for the presence of a version number. */
|
||
sver = strchr (optarg, ':');
|
||
if (sver == NULL)
|
||
len = strlen (optarg);
|
||
else
|
||
{
|
||
len = sver - optarg;
|
||
set_pe_name ("__major_subsystem_version__",
|
||
strtoul (sver + 1, &end, 0));
|
||
if (*end == '.')
|
||
set_pe_name ("__minor_subsystem_version__",
|
||
strtoul (end + 1, &end, 0));
|
||
if (*end != '\0')
|
||
einfo (_("%P: warning: bad version number in -subsystem option\n"));
|
||
}
|
||
|
||
/* Check for numeric subsystem. */
|
||
temp_subsystem = strtoul (optarg, & end, 0);
|
||
if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536))
|
||
{
|
||
/* Search list for a numeric match to use its entry point. */
|
||
for (i = 0; v[i].name; i++)
|
||
if (v[i].value == (int) temp_subsystem)
|
||
break;
|
||
|
||
/* Use this subsystem. */
|
||
pe_subsystem = (int) temp_subsystem;
|
||
}
|
||
else
|
||
{
|
||
/* Search for subsystem by name. */
|
||
for (i = 0; v[i].name; i++)
|
||
if (strncmp (optarg, v[i].name, len) == 0
|
||
&& v[i].name[len] == '\0')
|
||
break;
|
||
|
||
if (v[i].name == NULL)
|
||
{
|
||
einfo (_("%P%F: invalid subsystem type %s\n"), optarg);
|
||
return;
|
||
}
|
||
|
||
pe_subsystem = v[i].value;
|
||
}
|
||
|
||
set_pe_name ("__subsystem__", pe_subsystem);
|
||
|
||
return;
|
||
}
|
||
|
||
|
||
static void
|
||
set_pe_value (char *name)
|
||
{
|
||
char *end;
|
||
|
||
set_pe_name (name, strtoul (optarg, &end, 0));
|
||
|
||
if (end == optarg)
|
||
einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg);
|
||
|
||
optarg = end;
|
||
}
|
||
|
||
|
||
static void
|
||
set_pe_stack_heap (char *resname, char *comname)
|
||
{
|
||
set_pe_value (resname);
|
||
|
||
if (*optarg == ',')
|
||
{
|
||
optarg++;
|
||
set_pe_value (comname);
|
||
}
|
||
else if (*optarg)
|
||
einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg);
|
||
}
|
||
|
||
#define DEFAULT_BUILD_ID_STYLE "md5"
|
||
|
||
static bfd_boolean
|
||
gld${EMULATION_NAME}_handle_option (int optc)
|
||
{
|
||
switch (optc)
|
||
{
|
||
default:
|
||
return FALSE;
|
||
|
||
case OPTION_BASE_FILE:
|
||
link_info.base_file = fopen (optarg, FOPEN_WB);
|
||
if (link_info.base_file == NULL)
|
||
einfo (_("%F%P: cannot open base file %s\n"), optarg);
|
||
break;
|
||
|
||
/* PE options. */
|
||
case OPTION_HEAP:
|
||
set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
|
||
break;
|
||
case OPTION_STACK:
|
||
set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
|
||
break;
|
||
case OPTION_SUBSYSTEM:
|
||
set_pe_subsystem ();
|
||
break;
|
||
case OPTION_MAJOR_OS_VERSION:
|
||
set_pe_value ("__major_os_version__");
|
||
break;
|
||
case OPTION_MINOR_OS_VERSION:
|
||
set_pe_value ("__minor_os_version__");
|
||
break;
|
||
case OPTION_MAJOR_SUBSYSTEM_VERSION:
|
||
set_pe_value ("__major_subsystem_version__");
|
||
break;
|
||
case OPTION_MINOR_SUBSYSTEM_VERSION:
|
||
set_pe_value ("__minor_subsystem_version__");
|
||
break;
|
||
case OPTION_MAJOR_IMAGE_VERSION:
|
||
set_pe_value ("__major_image_version__");
|
||
break;
|
||
case OPTION_MINOR_IMAGE_VERSION:
|
||
set_pe_value ("__minor_image_version__");
|
||
break;
|
||
case OPTION_FILE_ALIGNMENT:
|
||
set_pe_value ("__file_alignment__");
|
||
break;
|
||
case OPTION_SECTION_ALIGNMENT:
|
||
set_pe_value ("__section_alignment__");
|
||
break;
|
||
case OPTION_DLL:
|
||
set_pe_name ("__dll__", 1);
|
||
break;
|
||
case OPTION_IMAGE_BASE:
|
||
set_pe_value ("__image_base__");
|
||
break;
|
||
case OPTION_SUPPORT_OLD_CODE:
|
||
support_old_code = 1;
|
||
break;
|
||
case OPTION_THUMB_ENTRY:
|
||
thumb_entry_symbol = optarg;
|
||
break;
|
||
case OPTION_USE_NUL_PREFIXED_IMPORT_TABLES:
|
||
pe_use_nul_prefixed_import_tables = TRUE;
|
||
break;
|
||
case OPTION_NO_LEADING_UNDERSCORE:
|
||
pe_leading_underscore = 0;
|
||
break;
|
||
case OPTION_LEADING_UNDERSCORE:
|
||
pe_leading_underscore = 1;
|
||
break;
|
||
case OPTION_INSERT_TIMESTAMP:
|
||
insert_timestamp = TRUE;
|
||
break;
|
||
case OPTION_NO_INSERT_TIMESTAMP:
|
||
insert_timestamp = FALSE;
|
||
break;
|
||
#ifdef DLL_SUPPORT
|
||
case OPTION_OUT_DEF:
|
||
pe_out_def_filename = xstrdup (optarg);
|
||
break;
|
||
case OPTION_EXPORT_ALL:
|
||
pe_dll_export_everything = 1;
|
||
break;
|
||
case OPTION_EXCLUDE_SYMBOLS:
|
||
pe_dll_add_excludes (optarg, EXCLUDESYMS);
|
||
break;
|
||
case OPTION_EXCLUDE_ALL_SYMBOLS:
|
||
pe_dll_exclude_all_symbols = 1;
|
||
break;
|
||
case OPTION_EXCLUDE_LIBS:
|
||
pe_dll_add_excludes (optarg, EXCLUDELIBS);
|
||
break;
|
||
case OPTION_EXCLUDE_MODULES_FOR_IMPLIB:
|
||
pe_dll_add_excludes (optarg, EXCLUDEFORIMPLIB);
|
||
break;
|
||
case OPTION_KILL_ATS:
|
||
pe_dll_kill_ats = 1;
|
||
break;
|
||
case OPTION_STDCALL_ALIASES:
|
||
pe_dll_stdcall_aliases = 1;
|
||
break;
|
||
case OPTION_ENABLE_STDCALL_FIXUP:
|
||
pe_enable_stdcall_fixup = 1;
|
||
break;
|
||
case OPTION_DISABLE_STDCALL_FIXUP:
|
||
pe_enable_stdcall_fixup = 0;
|
||
break;
|
||
case OPTION_WARN_DUPLICATE_EXPORTS:
|
||
pe_dll_warn_dup_exports = 1;
|
||
break;
|
||
case OPTION_IMP_COMPAT:
|
||
pe_dll_compat_implib = 1;
|
||
break;
|
||
case OPTION_ENABLE_AUTO_IMAGE_BASE:
|
||
pe_enable_auto_image_base = 1;
|
||
if (optarg && *optarg)
|
||
{
|
||
char *end;
|
||
pe_auto_image_base = strtoul (optarg, &end, 0);
|
||
/* XXX should check that we actually parsed something */
|
||
}
|
||
break;
|
||
case OPTION_DISABLE_AUTO_IMAGE_BASE:
|
||
pe_enable_auto_image_base = 0;
|
||
break;
|
||
case OPTION_DLL_SEARCH_PREFIX:
|
||
pe_dll_search_prefix = xstrdup (optarg);
|
||
break;
|
||
case OPTION_NO_DEFAULT_EXCLUDES:
|
||
pe_dll_do_default_excludes = 0;
|
||
break;
|
||
case OPTION_DLL_ENABLE_AUTO_IMPORT:
|
||
link_info.pei386_auto_import = 1;
|
||
break;
|
||
case OPTION_DLL_DISABLE_AUTO_IMPORT:
|
||
link_info.pei386_auto_import = 0;
|
||
break;
|
||
case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC:
|
||
link_info.pei386_runtime_pseudo_reloc =
|
||
DEFAULT_PSEUDO_RELOC_VERSION;
|
||
break;
|
||
case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1:
|
||
link_info.pei386_runtime_pseudo_reloc = 1;
|
||
break;
|
||
case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2:
|
||
link_info.pei386_runtime_pseudo_reloc = 2;
|
||
break;
|
||
case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC:
|
||
link_info.pei386_runtime_pseudo_reloc = 0;
|
||
break;
|
||
case OPTION_ENABLE_EXTRA_PE_DEBUG:
|
||
pe_dll_extra_pe_debug = 1;
|
||
break;
|
||
#endif
|
||
case OPTION_LARGE_ADDRESS_AWARE:
|
||
real_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
|
||
break;
|
||
case OPTION_DISABLE_LARGE_ADDRESS_AWARE:
|
||
real_flags &= ~ IMAGE_FILE_LARGE_ADDRESS_AWARE;
|
||
break;
|
||
case OPTION_ENABLE_LONG_SECTION_NAMES:
|
||
pe_use_coff_long_section_names = 1;
|
||
break;
|
||
case OPTION_DISABLE_LONG_SECTION_NAMES:
|
||
pe_use_coff_long_section_names = 0;
|
||
break;
|
||
/* Get DLLCharacteristics bits */
|
||
case OPTION_DYNAMIC_BASE:
|
||
pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE;
|
||
break;
|
||
case OPTION_FORCE_INTEGRITY:
|
||
pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY;
|
||
break;
|
||
case OPTION_NX_COMPAT:
|
||
pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_NX_COMPAT;
|
||
break;
|
||
case OPTION_NO_ISOLATION:
|
||
pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_ISOLATION;
|
||
break;
|
||
case OPTION_NO_SEH:
|
||
pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_SEH;
|
||
break;
|
||
case OPTION_NO_BIND:
|
||
pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_BIND;
|
||
break;
|
||
case OPTION_WDM_DRIVER:
|
||
pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_WDM_DRIVER;
|
||
break;
|
||
case OPTION_TERMINAL_SERVER_AWARE:
|
||
pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE;
|
||
break;
|
||
case OPTION_BUILD_ID:
|
||
if (emit_build_id != NULL)
|
||
{
|
||
free ((char *) emit_build_id);
|
||
emit_build_id = NULL;
|
||
}
|
||
if (optarg == NULL)
|
||
optarg = DEFAULT_BUILD_ID_STYLE;
|
||
if (strcmp (optarg, "none"))
|
||
emit_build_id = xstrdup (optarg);
|
||
break;
|
||
}
|
||
|
||
/* Set DLLCharacteristics bits */
|
||
set_pe_name ("__dll_characteristics__", pe_dll_characteristics);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
|
||
#ifdef DLL_SUPPORT
|
||
static unsigned long
|
||
strhash (const char *str)
|
||
{
|
||
const unsigned char *s;
|
||
unsigned long hash;
|
||
unsigned int c;
|
||
unsigned int len;
|
||
|
||
hash = 0;
|
||
len = 0;
|
||
s = (const unsigned char *) str;
|
||
while ((c = *s++) != '\0')
|
||
{
|
||
hash += c + (c << 17);
|
||
hash ^= hash >> 2;
|
||
++len;
|
||
}
|
||
hash += len + (len << 17);
|
||
hash ^= hash >> 2;
|
||
|
||
return hash;
|
||
}
|
||
|
||
/* Use the output file to create a image base for relocatable DLLs. */
|
||
|
||
static unsigned long
|
||
compute_dll_image_base (const char *ofile)
|
||
{
|
||
unsigned long hash = strhash (ofile);
|
||
return pe_auto_image_base + ((hash << 16) & 0x0FFC0000);
|
||
}
|
||
#endif
|
||
|
||
/* Assign values to the special symbols before the linker script is
|
||
read. */
|
||
|
||
static void
|
||
gld_${EMULATION_NAME}_set_symbols (void)
|
||
{
|
||
/* Run through and invent symbols for all the
|
||
names and insert the defaults. */
|
||
int j;
|
||
|
||
is_underscoring ();
|
||
|
||
if (!init[IMAGEBASEOFF].inited)
|
||
{
|
||
if (bfd_link_relocatable (&link_info))
|
||
init[IMAGEBASEOFF].value = 0;
|
||
else if (init[DLLOFF].value || bfd_link_dll (&link_info))
|
||
{
|
||
#ifdef DLL_SUPPORT
|
||
init[IMAGEBASEOFF].value = (pe_enable_auto_image_base
|
||
? compute_dll_image_base (output_filename)
|
||
: NT_DLL_IMAGE_BASE);
|
||
#else
|
||
init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
|
||
#endif
|
||
}
|
||
else
|
||
init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
|
||
init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value;
|
||
}
|
||
|
||
/* Don't do any symbol assignments if this is a relocatable link. */
|
||
if (bfd_link_relocatable (&link_info))
|
||
return;
|
||
|
||
/* Glue the assignments into the abs section. */
|
||
push_stat_ptr (&abs_output_section->children);
|
||
|
||
for (j = 0; init[j].ptr; j++)
|
||
{
|
||
long val = init[j].value;
|
||
lang_assignment_statement_type *rv;
|
||
|
||
rv = lang_add_assignment (exp_assign (GET_INIT_SYMBOL_NAME (j),
|
||
exp_intop (val), FALSE));
|
||
if (init[j].size == sizeof (short))
|
||
*(short *) init[j].ptr = val;
|
||
else if (init[j].size == sizeof (int))
|
||
*(int *) init[j].ptr = val;
|
||
else if (init[j].size == sizeof (long))
|
||
*(long *) init[j].ptr = val;
|
||
/* This might be a long long or other special type. */
|
||
else if (init[j].size == sizeof (bfd_vma))
|
||
*(bfd_vma *) init[j].ptr = val;
|
||
else abort ();
|
||
if (j == IMAGEBASEOFF)
|
||
image_base_statement = rv;
|
||
}
|
||
/* Restore the pointer. */
|
||
pop_stat_ptr ();
|
||
|
||
if (pe.FileAlignment > pe.SectionAlignment)
|
||
{
|
||
einfo (_("%P: warning, file alignment > section alignment.\n"));
|
||
}
|
||
}
|
||
|
||
/* This is called after the linker script and the command line options
|
||
have been read. */
|
||
|
||
static void
|
||
gld_${EMULATION_NAME}_after_parse (void)
|
||
{
|
||
/* PR ld/6744: Warn the user if they have used an ELF-only
|
||
option hoping it will work on PE. */
|
||
if (link_info.export_dynamic)
|
||
einfo (_("%P: warning: --export-dynamic is not supported for PE "
|
||
"targets, did you mean --export-all-symbols?\n"));
|
||
|
||
set_entry_point ();
|
||
|
||
after_parse_default ();
|
||
}
|
||
|
||
/* pe-dll.c directly accesses pe_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 * pe_data_import_dll;
|
||
|
||
#ifdef DLL_SUPPORT
|
||
static struct bfd_link_hash_entry *pe_undef_found_sym;
|
||
|
||
static bfd_boolean
|
||
pe_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf)
|
||
{
|
||
int sl;
|
||
char *string = inf;
|
||
const char *hs = h->root.string;
|
||
|
||
sl = strlen (string);
|
||
if (h->type == bfd_link_hash_defined
|
||
&& ((*hs == '@' && *string == '_'
|
||
&& strncmp (hs + 1, string + 1, sl - 1) == 0)
|
||
|| strncmp (hs, string, sl) == 0)
|
||
&& h->root.string[sl] == '@')
|
||
{
|
||
pe_undef_found_sym = h;
|
||
return FALSE;
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* Change UNDEF to a defined symbol, taking data from SYM. */
|
||
|
||
static void
|
||
change_undef (struct bfd_link_hash_entry * undef,
|
||
struct bfd_link_hash_entry * sym)
|
||
{
|
||
static bfd_boolean gave_warning_message = FALSE;
|
||
|
||
undef->type = bfd_link_hash_defined;
|
||
undef->u.def.value = sym->u.def.value;
|
||
undef->u.def.section = sym->u.def.section;
|
||
|
||
if (pe_enable_stdcall_fixup == -1)
|
||
{
|
||
einfo (_("Warning: resolving %s by linking to %s\n"),
|
||
undef->root.string, sym->root.string);
|
||
|
||
if (! gave_warning_message)
|
||
{
|
||
einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
|
||
einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
|
||
gave_warning_message = TRUE;
|
||
}
|
||
}
|
||
|
||
/* PR 19803: Make sure that the linked symbol is not garbage collected. */
|
||
lang_add_gc_name (sym->root.string);
|
||
}
|
||
|
||
static void
|
||
pe_fixup_stdcalls (void)
|
||
{
|
||
struct bfd_link_hash_entry *undef, *sym;
|
||
|
||
if (pe_dll_extra_pe_debug)
|
||
printf ("%s\n", __FUNCTION__);
|
||
|
||
for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
|
||
if (undef->type == bfd_link_hash_undefined)
|
||
{
|
||
const char * name = undef->root.string;
|
||
char * at;
|
||
int lead_at = (*name == '@');
|
||
|
||
if (lead_at)
|
||
at = strchr (name + 1, '@');
|
||
else
|
||
at = strchr (name, '@');
|
||
|
||
if (at || lead_at)
|
||
{
|
||
/* The symbol is a stdcall symbol, so let's look for a
|
||
cdecl symbol with the same name and resolve to that. */
|
||
char *cname = xstrdup (name);
|
||
|
||
if (lead_at)
|
||
*cname = '_';
|
||
if (at)
|
||
* strchr (cname, '@') = 0;
|
||
sym = bfd_link_hash_lookup (link_info.hash, cname, FALSE, FALSE, TRUE);
|
||
|
||
if (sym && sym->type == bfd_link_hash_defined)
|
||
change_undef (undef, sym);
|
||
}
|
||
else
|
||
{
|
||
/* The symbol is a cdecl symbol, so we look for stdcall
|
||
symbols - which means scanning the whole symbol table. */
|
||
pe_undef_found_sym = NULL;
|
||
bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match,
|
||
(char *) name);
|
||
if (pe_undef_found_sym)
|
||
change_undef (undef, pe_undef_found_sym);
|
||
}
|
||
}
|
||
}
|
||
|
||
static int
|
||
make_import_fixup (arelent *rel, asection *s)
|
||
{
|
||
struct bfd_symbol *sym = *rel->sym_ptr_ptr;
|
||
char addend[4];
|
||
|
||
if (pe_dll_extra_pe_debug)
|
||
printf ("arelent: %s@%#lx: add=%li\n", sym->name,
|
||
(unsigned long) rel->address, (long) rel->addend);
|
||
|
||
if (! bfd_get_section_contents (s->owner, s, addend, rel->address, sizeof (addend)))
|
||
einfo (_("%C: Cannot get section contents - auto-import exception\n"),
|
||
s->owner, s, rel->address);
|
||
|
||
pe_create_import_fixup (rel, s, bfd_get_32 (s->owner, addend));
|
||
|
||
return 1;
|
||
}
|
||
|
||
static void
|
||
pe_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*. */
|
||
#define BUF_SIZE 4096
|
||
char buf[BUF_SIZE];
|
||
|
||
if (pe_dll_extra_pe_debug)
|
||
printf ("%s:%s\n", __FUNCTION__, undef->root.string);
|
||
|
||
if (strlen (undef->root.string) > (BUF_SIZE - 6))
|
||
{
|
||
/* PR linker/18466. */
|
||
einfo (_("%P: internal error: symbol too long: %s\n"),
|
||
undef->root.string);
|
||
return;
|
||
}
|
||
|
||
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, i;
|
||
|
||
if (link_info.pei386_auto_import == -1)
|
||
{
|
||
static bfd_boolean warned = FALSE;
|
||
|
||
info_msg (_("Info: resolving %s by linking to %s (auto-import)\n"),
|
||
undef->root.string, buf);
|
||
|
||
/* PR linker/4844. */
|
||
if (! warned)
|
||
{
|
||
warned = TRUE;
|
||
einfo (_("%P: warning: auto-importing has been activated without --enable-auto-import specified on the command line.\n\
|
||
This should work unless it involves constant data structures referencing symbols from auto-imported DLLs.\n"));
|
||
}
|
||
}
|
||
|
||
if (!bfd_generic_link_read_symbols (b))
|
||
{
|
||
einfo (_("%B%F: could not read symbols: %E\n"), b);
|
||
return;
|
||
}
|
||
|
||
symbols = bfd_get_outsymbols (b);
|
||
nsyms = bfd_get_symcount (b);
|
||
|
||
for (i = 0; i < nsyms; i++)
|
||
{
|
||
if (! CONST_STRNEQ (symbols[i]->name,
|
||
U ("_head_")))
|
||
continue;
|
||
|
||
if (pe_dll_extra_pe_debug)
|
||
printf ("->%s\n", symbols[i]->name);
|
||
|
||
pe_data_import_dll = (char *) (symbols[i]->name
|
||
+ U_SIZE ("_head_") - 1);
|
||
break;
|
||
}
|
||
|
||
pe_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)
|
||
{
|
||
printf ("+%s\n", h->string);
|
||
|
||
return TRUE;
|
||
}
|
||
#endif /* DLL_SUPPORT */
|
||
|
||
static void
|
||
debug_section_p (bfd *abfd ATTRIBUTE_UNUSED, asection *sect, void *obj)
|
||
{
|
||
int *found = (int *) obj;
|
||
if (strncmp (".debug_", sect->name, sizeof (".debug_") - 1) == 0)
|
||
*found = 1;
|
||
}
|
||
|
||
static bfd_boolean
|
||
pecoff_checksum_contents (bfd *abfd,
|
||
void (*process) (const void *, size_t, void *),
|
||
void *arg)
|
||
{
|
||
file_ptr filepos = (file_ptr) 0;
|
||
|
||
while (1)
|
||
{
|
||
unsigned char b;
|
||
int status;
|
||
|
||
if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
|
||
return 0;
|
||
|
||
status = bfd_bread (&b, (bfd_size_type) 1, abfd);
|
||
if (status < 1)
|
||
{
|
||
break;
|
||
}
|
||
|
||
(*process) (&b, 1, arg);
|
||
filepos += 1;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static bfd_boolean
|
||
write_build_id (bfd *abfd)
|
||
{
|
||
struct pe_tdata *t = pe_data (abfd);
|
||
asection *asec;
|
||
struct bfd_link_order *link_order = NULL;
|
||
unsigned char *contents;
|
||
bfd_size_type size;
|
||
bfd_size_type build_id_size;
|
||
unsigned char *build_id;
|
||
|
||
/* Find the section the .buildid output section has been merged info. */
|
||
for (asec = abfd->sections; asec != NULL; asec = asec->next)
|
||
{
|
||
struct bfd_link_order *l = NULL;
|
||
for (l = asec->map_head.link_order; l != NULL; l = l->next)
|
||
{
|
||
if (l->type == bfd_indirect_link_order)
|
||
{
|
||
if (l->u.indirect.section == t->build_id.sec)
|
||
{
|
||
link_order = l;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (link_order)
|
||
break;
|
||
}
|
||
|
||
if (!link_order)
|
||
{
|
||
einfo (_("%P: warning: .buildid section discarded,"
|
||
" --build-id ignored.\n"));
|
||
return TRUE;
|
||
}
|
||
|
||
if (t->build_id.sec->contents == NULL)
|
||
t->build_id.sec->contents = (unsigned char *) xmalloc (t->build_id.sec->size);
|
||
contents = t->build_id.sec->contents;
|
||
size = t->build_id.sec->size;
|
||
|
||
build_id_size = compute_build_id_size (t->build_id.style);
|
||
build_id = xmalloc (build_id_size);
|
||
generate_build_id (abfd, t->build_id.style, pecoff_checksum_contents, build_id, build_id_size);
|
||
|
||
bfd_vma ib = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase;
|
||
|
||
/* Construct a debug directory entry which points to an immediately following CodeView record. */
|
||
struct internal_IMAGE_DEBUG_DIRECTORY idd;
|
||
idd.Characteristics = 0;
|
||
idd.TimeDateStamp = 0;
|
||
idd.MajorVersion = 0;
|
||
idd.MinorVersion = 0;
|
||
idd.Type = PE_IMAGE_DEBUG_TYPE_CODEVIEW;
|
||
idd.SizeOfData = sizeof (CV_INFO_PDB70) + 1;
|
||
idd.AddressOfRawData = asec->vma - ib + link_order->offset
|
||
+ sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
|
||
idd.PointerToRawData = asec->filepos + link_order->offset
|
||
+ sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
|
||
|
||
struct external_IMAGE_DEBUG_DIRECTORY *ext = (struct external_IMAGE_DEBUG_DIRECTORY *)contents;
|
||
_bfd_XXi_swap_debugdir_out (abfd, &idd, ext);
|
||
|
||
/* Write the debug directory entry. */
|
||
if (bfd_seek (abfd, asec->filepos + link_order->offset, SEEK_SET) != 0)
|
||
return 0;
|
||
|
||
if (bfd_bwrite (contents, size, abfd) != size)
|
||
return 0;
|
||
|
||
/* Construct the CodeView record. */
|
||
CODEVIEW_INFO cvinfo;
|
||
cvinfo.CVSignature = CVINFO_PDB70_CVSIGNATURE;
|
||
cvinfo.Age = 1;
|
||
|
||
/* Zero pad or truncate the generated build_id to fit in the CodeView record. */
|
||
memset (&(cvinfo.Signature), 0, CV_INFO_SIGNATURE_LENGTH);
|
||
memcpy (&(cvinfo.Signature), build_id, (build_id_size > CV_INFO_SIGNATURE_LENGTH)
|
||
? CV_INFO_SIGNATURE_LENGTH : build_id_size);
|
||
|
||
free (build_id);
|
||
|
||
/* Write the codeview record. */
|
||
if (_bfd_XXi_write_codeview_record (abfd, idd.PointerToRawData, &cvinfo) == 0)
|
||
return 0;
|
||
|
||
/* Record the location of the debug directory in the data directory. */
|
||
pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].VirtualAddress
|
||
= asec->vma - ib + link_order->offset;
|
||
pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].Size
|
||
= sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Make .buildid section, and set up coff_tdata->build_id. */
|
||
static bfd_boolean
|
||
setup_build_id (bfd *ibfd)
|
||
{
|
||
asection *s;
|
||
flagword flags;
|
||
|
||
if (!validate_build_id_style (emit_build_id))
|
||
{
|
||
einfo ("%P: warning: unrecognized --build-id style ignored.\n");
|
||
return FALSE;
|
||
}
|
||
|
||
flags = (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_IN_MEMORY
|
||
| SEC_LINKER_CREATED | SEC_READONLY | SEC_DATA);
|
||
s = bfd_make_section_anyway_with_flags (ibfd, ".buildid", flags);
|
||
if (s != NULL)
|
||
{
|
||
struct pe_tdata *t = pe_data (link_info.output_bfd);
|
||
t->build_id.after_write_object_contents = &write_build_id;
|
||
t->build_id.style = emit_build_id;
|
||
t->build_id.sec = s;
|
||
|
||
/* Section is a fixed size:
|
||
One IMAGE_DEBUG_DIRECTORY entry, of type IMAGE_DEBUG_TYPE_CODEVIEW,
|
||
pointing at a CV_INFO_PDB70 record containing the build-id, with a
|
||
null byte for PdbFileName. */
|
||
s->size = sizeof (struct external_IMAGE_DEBUG_DIRECTORY)
|
||
+ sizeof (CV_INFO_PDB70) + 1;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
einfo ("%P: warning: Cannot create .buildid section,"
|
||
" --build-id ignored.\n");
|
||
return FALSE;
|
||
}
|
||
|
||
static void
|
||
gld_${EMULATION_NAME}_after_open (void)
|
||
{
|
||
after_open_default ();
|
||
|
||
#ifdef DLL_SUPPORT
|
||
if (pe_dll_extra_pe_debug)
|
||
{
|
||
bfd *a;
|
||
struct bfd_link_hash_entry *sym;
|
||
|
||
printf ("%s()\n", __FUNCTION__);
|
||
|
||
for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
|
||
printf ("-%s\n", sym->root.string);
|
||
bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);
|
||
|
||
for (a = link_info.input_bfds; a; a = a->link.next)
|
||
printf ("*%s\n",a->filename);
|
||
}
|
||
#endif
|
||
|
||
if (emit_build_id != NULL)
|
||
{
|
||
bfd *abfd;
|
||
|
||
/* Find a COFF input. */
|
||
for (abfd = link_info.input_bfds;
|
||
abfd != (bfd *) NULL; abfd = abfd->link.next)
|
||
if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
|
||
break;
|
||
|
||
/* If there are no COFF input files do not try to
|
||
add a build-id section. */
|
||
if (abfd == NULL
|
||
|| !setup_build_id (abfd))
|
||
{
|
||
free ((char *) emit_build_id);
|
||
emit_build_id = NULL;
|
||
}
|
||
}
|
||
|
||
/* Pass the wacky PE command line options into the output bfd.
|
||
FIXME: This should be done via a function, rather than by
|
||
including an internal BFD header. */
|
||
|
||
if (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 '%B'.\n"),
|
||
link_info.output_bfd);
|
||
|
||
pe_data (link_info.output_bfd)->pe_opthdr = pe;
|
||
pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
|
||
pe_data (link_info.output_bfd)->real_flags |= real_flags;
|
||
pe_data (link_info.output_bfd)->insert_timestamp = insert_timestamp;
|
||
|
||
/* At this point we must decide whether to use long section names
|
||
in the output or not. If the user hasn't explicitly specified
|
||
on the command line, we leave it to the default for the format
|
||
(object files yes, image files no), except if there is debug
|
||
information present; GDB relies on the long section names to
|
||
find it, so enable it in that case. */
|
||
if (pe_use_coff_long_section_names < 0 && link_info.strip == strip_none)
|
||
{
|
||
if (bfd_link_relocatable (&link_info))
|
||
pe_use_coff_long_section_names = 1;
|
||
else
|
||
{
|
||
/* Iterate over all sections of all input BFDs, checking
|
||
for any that begin 'debug_' and are long names. */
|
||
LANG_FOR_EACH_INPUT_STATEMENT (is)
|
||
{
|
||
int found_debug = 0;
|
||
|
||
bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug);
|
||
if (found_debug)
|
||
{
|
||
pe_use_coff_long_section_names = 1;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
pe_output_file_set_long_section_names (link_info.output_bfd);
|
||
|
||
#ifdef DLL_SUPPORT
|
||
if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
|
||
pe_fixup_stdcalls ();
|
||
|
||
pe_process_import_defs (link_info.output_bfd, &link_info);
|
||
|
||
pe_find_data_imports ();
|
||
|
||
/* As possibly new symbols are added by imports, we rerun
|
||
stdcall/fastcall fixup here. */
|
||
if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
|
||
pe_fixup_stdcalls ();
|
||
|
||
#if defined (TARGET_IS_i386pe) \
|
||
|| defined (TARGET_IS_armpe) \
|
||
|| defined (TARGET_IS_arm_epoc_pe) \
|
||
|| defined (TARGET_IS_arm_wince_pe)
|
||
if (!bfd_link_relocatable (&link_info))
|
||
pe_dll_build_sections (link_info.output_bfd, &link_info);
|
||
#else
|
||
if (bfd_link_pic (&link_info))
|
||
pe_dll_build_sections (link_info.output_bfd, &link_info);
|
||
else
|
||
pe_exe_build_sections (link_info.output_bfd, &link_info);
|
||
#endif
|
||
#endif /* DLL_SUPPORT */
|
||
|
||
#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
|
||
if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL)
|
||
{
|
||
/* The arm backend needs special fields in the output hash structure.
|
||
These will only be created if the output format is an arm format,
|
||
hence we do not support linking and changing output formats at the
|
||
same time. Use a link followed by objcopy to change output formats. */
|
||
einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
|
||
return;
|
||
}
|
||
{
|
||
/* Find a BFD that can hold the interworking stubs. */
|
||
LANG_FOR_EACH_INPUT_STATEMENT (is)
|
||
{
|
||
if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info))
|
||
break;
|
||
}
|
||
}
|
||
#endif
|
||
|
||
{
|
||
/* This next chunk of code tries to detect the case where you have
|
||
two import libraries for the same DLL (specifically,
|
||
symbolically linking libm.a and libc.a in cygwin to
|
||
libcygwin.a). In those cases, it's possible for function
|
||
thunks from the second implib to be used but without the
|
||
head/tail objects, causing an improper import table. We detect
|
||
those cases and rename the "other" import libraries to match
|
||
the one the head/tail come from, so that the linker will sort
|
||
things nicely and produce a valid import table. */
|
||
|
||
LANG_FOR_EACH_INPUT_STATEMENT (is)
|
||
{
|
||
if (is->the_bfd->my_archive)
|
||
{
|
||
int idata2 = 0, reloc_count=0, is_imp = 0;
|
||
asection *sec;
|
||
|
||
/* See if this is an import library thunk. */
|
||
for (sec = is->the_bfd->sections; sec; sec = sec->next)
|
||
{
|
||
if (strcmp (sec->name, ".idata\$2") == 0)
|
||
idata2 = 1;
|
||
if (CONST_STRNEQ (sec->name, ".idata\$"))
|
||
is_imp = 1;
|
||
reloc_count += sec->reloc_count;
|
||
}
|
||
|
||
if (is_imp && !idata2 && reloc_count)
|
||
{
|
||
/* It is, look for the reference to head and see if it's
|
||
from our own library. */
|
||
for (sec = is->the_bfd->sections; sec; sec = sec->next)
|
||
{
|
||
int i;
|
||
long relsize;
|
||
asymbol **symbols;
|
||
arelent **relocs;
|
||
int nrelocs;
|
||
|
||
relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
|
||
if (relsize < 1)
|
||
break;
|
||
|
||
if (!bfd_generic_link_read_symbols (is->the_bfd))
|
||
{
|
||
einfo (_("%B%F: 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;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
{
|
||
/* The following chunk of code tries to identify jump stubs in
|
||
import libraries which are dead code and eliminates them
|
||
from the final link. For each exported symbol <sym>, there
|
||
is a object file in the import library with a .text section
|
||
and several .idata\$* sections. The .text section contains the
|
||
symbol definition for <sym> which is a jump stub of the form
|
||
jmp *__imp_<sym>. The .idata\$5 contains the symbol definition
|
||
for __imp_<sym> which is the address of the slot for <sym> in
|
||
the import address table. When a symbol is imported explicitly
|
||
using __declspec(dllimport) declaration, the compiler generates
|
||
a reference to __imp_<sym> which directly resolves to the
|
||
symbol in .idata\$5, in which case the jump stub code is not
|
||
needed. The following code tries to identify jump stub sections
|
||
in import libraries which are not referred to by anyone and
|
||
marks them for exclusion from the final link. */
|
||
LANG_FOR_EACH_INPUT_STATEMENT (is)
|
||
{
|
||
if (is->the_bfd->my_archive)
|
||
{
|
||
int is_imp = 0;
|
||
asection *sec, *stub_sec = NULL;
|
||
|
||
/* See if this is an import library thunk. */
|
||
for (sec = is->the_bfd->sections; sec; sec = sec->next)
|
||
{
|
||
if (strncmp (sec->name, ".idata\$", 7) == 0)
|
||
is_imp = 1;
|
||
/* The section containing the jmp stub has code
|
||
and has a reloc. */
|
||
if ((sec->flags & SEC_CODE) && sec->reloc_count)
|
||
stub_sec = sec;
|
||
}
|
||
|
||
if (is_imp && stub_sec)
|
||
{
|
||
asymbol **symbols;
|
||
long nsyms, src_count;
|
||
struct bfd_link_hash_entry * blhe;
|
||
|
||
if (!bfd_generic_link_read_symbols (is->the_bfd))
|
||
{
|
||
einfo (_("%B%F: could not read symbols: %E\n"),
|
||
is->the_bfd);
|
||
return;
|
||
}
|
||
symbols = bfd_get_outsymbols (is->the_bfd);
|
||
nsyms = bfd_get_symcount (is->the_bfd);
|
||
|
||
for (src_count = 0; src_count < nsyms; src_count++)
|
||
{
|
||
if (symbols[src_count]->section->id == stub_sec->id)
|
||
{
|
||
/* This symbol belongs to the section containing
|
||
the stub. */
|
||
blhe = bfd_link_hash_lookup (link_info.hash,
|
||
symbols[src_count]->name,
|
||
FALSE, FALSE, TRUE);
|
||
/* If the symbol in the stub section has no other
|
||
undefined references, exclude the stub section
|
||
from the final link. */
|
||
if (blhe != NULL
|
||
&& blhe->type == bfd_link_hash_defined
|
||
&& blhe->u.undef.next == NULL
|
||
&& blhe != link_info.hash->undefs_tail)
|
||
stub_sec->flags |= SEC_EXCLUDE;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
gld_${EMULATION_NAME}_before_allocation (void)
|
||
{
|
||
#ifdef TARGET_IS_ppcpe
|
||
/* Here we rummage through the found bfds to collect toc information. */
|
||
{
|
||
LANG_FOR_EACH_INPUT_STATEMENT (is)
|
||
{
|
||
if (!ppc_process_before_allocation (is->the_bfd, &link_info))
|
||
{
|
||
/* xgettext:c-format */
|
||
einfo (_("Errors encountered processing file %s\n"), is->filename);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* We have seen it all. Allocate it, and carry on. */
|
||
ppc_allocate_toc_section (&link_info);
|
||
#endif /* TARGET_IS_ppcpe */
|
||
|
||
#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
|
||
/* FIXME: we should be able to set the size of the interworking stub
|
||
section.
|
||
|
||
Here we rummage through the found bfds to collect glue
|
||
information. FIXME: should this be based on a command line
|
||
option? krk@cygnus.com. */
|
||
{
|
||
LANG_FOR_EACH_INPUT_STATEMENT (is)
|
||
{
|
||
if (! bfd_arm_process_before_allocation
|
||
(is->the_bfd, & link_info, support_old_code))
|
||
{
|
||
/* xgettext:c-format */
|
||
einfo (_("Errors encountered processing file %s for interworking\n"),
|
||
is->filename);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* We have seen it all. Allocate it, and carry on. */
|
||
bfd_arm_allocate_interworking_sections (& link_info);
|
||
#endif /* TARGET_IS_armpe || TARGET_IS_arm_epoc_pe || TARGET_IS_arm_wince_pe */
|
||
|
||
before_allocation_default ();
|
||
}
|
||
|
||
#ifdef DLL_SUPPORT
|
||
/* This is called when an input file isn't recognized as a BFD. We
|
||
check here for .DEF files and pull them in automatically. */
|
||
|
||
static int
|
||
saw_option (char *option)
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; init[i].ptr; i++)
|
||
if (strcmp (GET_INIT_SYMBOL_NAME (i), option) == 0)
|
||
return init[i].inited;
|
||
return 0;
|
||
}
|
||
#endif /* DLL_SUPPORT */
|
||
|
||
static bfd_boolean
|
||
gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
|
||
{
|
||
#ifdef DLL_SUPPORT
|
||
const char *ext = entry->filename + strlen (entry->filename) - 4;
|
||
|
||
if (filename_cmp (ext, ".def") == 0 || filename_cmp (ext, ".DEF") == 0)
|
||
{
|
||
pe_def_file = def_file_parse (entry->filename, pe_def_file);
|
||
|
||
if (pe_def_file)
|
||
{
|
||
int i, buflen=0, len;
|
||
char *buf;
|
||
|
||
for (i = 0; i < pe_def_file->num_exports; i++)
|
||
{
|
||
len = strlen (pe_def_file->exports[i].internal_name);
|
||
if (buflen < len + 2)
|
||
buflen = len + 2;
|
||
}
|
||
|
||
buf = xmalloc (buflen);
|
||
|
||
for (i = 0; i < pe_def_file->num_exports; i++)
|
||
{
|
||
struct bfd_link_hash_entry *h;
|
||
|
||
sprintf (buf, "%s%s", U (""),
|
||
pe_def_file->exports[i].internal_name);
|
||
|
||
h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE);
|
||
if (h == (struct bfd_link_hash_entry *) NULL)
|
||
einfo (_("%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, pe_def_file); */
|
||
if (pe_def_file->is_dll == 1)
|
||
link_info.type = type_dll;
|
||
|
||
if (pe_def_file->base_address != (bfd_vma)(-1))
|
||
{
|
||
pe.ImageBase
|
||
= pe_data (link_info.output_bfd)->pe_opthdr.ImageBase
|
||
= init[IMAGEBASEOFF].value
|
||
= pe_def_file->base_address;
|
||
init[IMAGEBASEOFF].inited = 1;
|
||
if (image_base_statement)
|
||
image_base_statement->exp
|
||
= exp_assign ("__image_base__", exp_intop (pe.ImageBase),
|
||
FALSE);
|
||
}
|
||
|
||
if (pe_def_file->stack_reserve != -1
|
||
&& ! saw_option ("__size_of_stack_reserve__"))
|
||
{
|
||
pe.SizeOfStackReserve = pe_def_file->stack_reserve;
|
||
if (pe_def_file->stack_commit != -1)
|
||
pe.SizeOfStackCommit = pe_def_file->stack_commit;
|
||
}
|
||
if (pe_def_file->heap_reserve != -1
|
||
&& ! saw_option ("__size_of_heap_reserve__"))
|
||
{
|
||
pe.SizeOfHeapReserve = pe_def_file->heap_reserve;
|
||
if (pe_def_file->heap_commit != -1)
|
||
pe.SizeOfHeapCommit = pe_def_file->heap_commit;
|
||
}
|
||
return TRUE;
|
||
}
|
||
}
|
||
#endif
|
||
return FALSE;
|
||
}
|
||
|
||
static bfd_boolean
|
||
gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
|
||
{
|
||
#ifdef DLL_SUPPORT
|
||
#ifdef TARGET_IS_i386pe
|
||
pe_dll_id_target ("pei-i386");
|
||
#endif
|
||
#ifdef TARGET_IS_shpe
|
||
pe_dll_id_target ("pei-shl");
|
||
#endif
|
||
#ifdef TARGET_IS_armpe
|
||
pe_dll_id_target ("pei-arm-little");
|
||
#endif
|
||
#ifdef TARGET_IS_arm_epoc_pe
|
||
pe_dll_id_target ("epoc-pei-arm-little");
|
||
#endif
|
||
#ifdef TARGET_IS_arm_wince_pe
|
||
pe_dll_id_target ("pei-arm-wince-little");
|
||
#endif
|
||
if (pe_bfd_is_dll (entry->the_bfd))
|
||
return pe_implied_import_dll (entry->filename);
|
||
#endif
|
||
return FALSE;
|
||
}
|
||
|
||
static void
|
||
gld_${EMULATION_NAME}_finish (void)
|
||
{
|
||
#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
|
||
struct bfd_link_hash_entry * h;
|
||
|
||
if (thumb_entry_symbol != NULL)
|
||
{
|
||
h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
|
||
FALSE, FALSE, TRUE);
|
||
|
||
if (h != (struct bfd_link_hash_entry *) NULL
|
||
&& (h->type == bfd_link_hash_defined
|
||
|| h->type == bfd_link_hash_defweak)
|
||
&& h->u.def.section->output_section != NULL)
|
||
{
|
||
static char buffer[32];
|
||
bfd_vma val;
|
||
|
||
/* Special procesing is required for a Thumb entry symbol. The
|
||
bottom bit of its address must be set. */
|
||
val = (h->u.def.value
|
||
+ bfd_get_section_vma (link_info.output_bfd,
|
||
h->u.def.section->output_section)
|
||
+ h->u.def.section->output_offset);
|
||
|
||
val |= 1;
|
||
|
||
/* Now convert this value into a string and store it in entry_symbol
|
||
where the lang_finish() function will pick it up. */
|
||
buffer[0] = '0';
|
||
buffer[1] = 'x';
|
||
|
||
sprintf_vma (buffer + 2, val);
|
||
|
||
if (entry_symbol.name != NULL && entry_from_cmdline)
|
||
einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
|
||
thumb_entry_symbol, entry_symbol.name);
|
||
entry_symbol.name = buffer;
|
||
}
|
||
else
|
||
einfo (_("%P: warning: cannot find thumb start symbol %s\n"), thumb_entry_symbol);
|
||
}
|
||
#endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) */
|
||
|
||
finish_default ();
|
||
|
||
#ifdef DLL_SUPPORT
|
||
if (bfd_link_pic (&link_info)
|
||
#if !defined(TARGET_IS_shpe)
|
||
|| (!bfd_link_relocatable (&link_info)
|
||
&& pe_def_file->num_exports != 0)
|
||
#endif
|
||
)
|
||
{
|
||
pe_dll_fill_sections (link_info.output_bfd, &link_info);
|
||
if (command_line.out_implib_filename)
|
||
pe_dll_generate_implib (pe_def_file, command_line.out_implib_filename,
|
||
&link_info);
|
||
}
|
||
#if defined(TARGET_IS_shpe)
|
||
/* ARM doesn't need relocs. */
|
||
else
|
||
{
|
||
pe_exe_fill_sections (link_info.output_bfd, &link_info);
|
||
}
|
||
#endif
|
||
|
||
if (pe_out_def_filename)
|
||
pe_dll_generate_def_file (pe_out_def_filename);
|
||
#endif /* DLL_SUPPORT */
|
||
|
||
/* I don't know where .idata gets set as code, but it shouldn't be. */
|
||
{
|
||
asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata");
|
||
|
||
if (asec)
|
||
{
|
||
asec->flags &= ~SEC_CODE;
|
||
asec->flags |= SEC_DATA;
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
/* Place an orphan section.
|
||
|
||
We use this to put sections in a reasonable place in the file, and
|
||
to ensure that they are aligned as required.
|
||
|
||
We handle grouped sections here as well. A section named .foo\$nn
|
||
goes into the output section .foo. All grouped sections are sorted
|
||
by name.
|
||
|
||
Grouped sections for the default sections are handled by the
|
||
default linker script using wildcards, and are sorted by
|
||
sort_sections. */
|
||
|
||
static lang_output_section_statement_type *
|
||
gld_${EMULATION_NAME}_place_orphan (asection *s,
|
||
const char *secname,
|
||
int constraint)
|
||
{
|
||
const char *orig_secname = secname;
|
||
char *dollar = NULL;
|
||
lang_output_section_statement_type *os;
|
||
lang_statement_list_type add_child;
|
||
lang_output_section_statement_type *match_by_name = NULL;
|
||
lang_statement_union_type **pl;
|
||
|
||
/* Look through the script to see where to place this section. */
|
||
if (!bfd_link_relocatable (&link_info)
|
||
&& (dollar = strchr (secname, '\$')) != NULL)
|
||
{
|
||
size_t len = dollar - secname;
|
||
char *newname = xmalloc (len + 1);
|
||
memcpy (newname, secname, len);
|
||
newname[len] = '\0';
|
||
secname = newname;
|
||
}
|
||
|
||
lang_list_init (&add_child);
|
||
|
||
os = NULL;
|
||
if (constraint == 0)
|
||
for (os = lang_output_section_find (secname);
|
||
os != NULL;
|
||
os = next_matching_output_section_statement (os, 0))
|
||
{
|
||
/* If we don't match an existing output section, tell
|
||
lang_insert_orphan to create a new output section. */
|
||
constraint = SPECIAL;
|
||
|
||
if (os->bfd_section != NULL
|
||
&& (os->bfd_section->flags == 0
|
||
|| ((s->flags ^ os->bfd_section->flags)
|
||
& (SEC_LOAD | SEC_ALLOC)) == 0))
|
||
{
|
||
/* We already have an output section statement with this
|
||
name, and its bfd section has compatible flags.
|
||
If the section already exists but does not have any flags set,
|
||
then it has been created by the linker, probably as a result of
|
||
a --section-start command line switch. */
|
||
lang_add_section (&add_child, s, NULL, os);
|
||
break;
|
||
}
|
||
|
||
/* Save unused output sections in case we can match them
|
||
against orphans later. */
|
||
if (os->bfd_section == NULL)
|
||
match_by_name = os;
|
||
}
|
||
|
||
/* If we didn't match an active output section, see if we matched an
|
||
unused one and use that. */
|
||
if (os == NULL && match_by_name)
|
||
{
|
||
lang_add_section (&match_by_name->children, s, NULL, match_by_name);
|
||
return match_by_name;
|
||
}
|
||
|
||
if (os == NULL)
|
||
{
|
||
static struct orphan_save hold[] =
|
||
{
|
||
{ ".text",
|
||
SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
|
||
0, 0, 0, 0 },
|
||
{ ".idata",
|
||
SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
|
||
0, 0, 0, 0 },
|
||
{ ".rdata",
|
||
SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
|
||
0, 0, 0, 0 },
|
||
{ ".data",
|
||
SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
|
||
0, 0, 0, 0 },
|
||
{ ".bss",
|
||
SEC_ALLOC,
|
||
0, 0, 0, 0 }
|
||
};
|
||
enum orphan_save_index
|
||
{
|
||
orphan_text = 0,
|
||
orphan_idata,
|
||
orphan_rodata,
|
||
orphan_data,
|
||
orphan_bss
|
||
};
|
||
static int orphan_init_done = 0;
|
||
struct orphan_save *place;
|
||
lang_output_section_statement_type *after;
|
||
etree_type *address;
|
||
flagword flags;
|
||
asection *nexts;
|
||
|
||
if (!orphan_init_done)
|
||
{
|
||
struct orphan_save *ho;
|
||
for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
|
||
if (ho->name != NULL)
|
||
{
|
||
ho->os = lang_output_section_find (ho->name);
|
||
if (ho->os != NULL && ho->os->flags == 0)
|
||
ho->os->flags = ho->flags;
|
||
}
|
||
orphan_init_done = 1;
|
||
}
|
||
|
||
flags = s->flags;
|
||
if (!bfd_link_relocatable (&link_info))
|
||
{
|
||
nexts = s;
|
||
while ((nexts = bfd_get_next_section_by_name (nexts->owner,
|
||
nexts)))
|
||
if (nexts->output_section == NULL
|
||
&& (nexts->flags & SEC_EXCLUDE) == 0
|
||
&& ((nexts->flags ^ flags) & (SEC_LOAD | SEC_ALLOC)) == 0
|
||
&& (nexts->owner->flags & DYNAMIC) == 0
|
||
&& 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 },
|
||
#ifdef DLL_SUPPORT
|
||
/* Try "<prefix>foo.dll" (preferred dll name, if specified). */
|
||
{ "%s%s.dll", TRUE },
|
||
#endif
|
||
/* Try "libfoo.dll" (default preferred dll name). */
|
||
{ "lib%s.dll", FALSE },
|
||
/* Finally try 'native' dll name "foo.dll". */
|
||
{ "%s.dll", FALSE },
|
||
/* Note: If adding more formats to this table, make sure to check to
|
||
see if their length is longer than libname_fmt[0].format, and if
|
||
so, update the call to xmalloc() below. */
|
||
{ NULL, FALSE }
|
||
};
|
||
static unsigned int format_max_len = 0;
|
||
const char * filename;
|
||
char * full_string;
|
||
char * base_string;
|
||
unsigned int i;
|
||
|
||
|
||
if (! entry->flags.maybe_archive || entry->flags.full_name_provided)
|
||
return FALSE;
|
||
|
||
filename = entry->filename;
|
||
|
||
if (format_max_len == 0)
|
||
/* We need to allow space in the memory that we are going to allocate
|
||
for the characters in the format string. Since the format array is
|
||
static we only need to calculate this information once. In theory
|
||
this value could also be computed statically, but this introduces
|
||
the possibility for a discrepancy and hence a possible memory
|
||
corruption. The lengths we compute here will be too long because
|
||
they will include any formating characters (%s) in the strings, but
|
||
this will not matter. */
|
||
for (i = 0; libname_fmt[i].format; i++)
|
||
if (format_max_len < strlen (libname_fmt[i].format))
|
||
format_max_len = strlen (libname_fmt[i].format);
|
||
|
||
full_string = xmalloc (strlen (search->name)
|
||
+ strlen (filename)
|
||
+ format_max_len
|
||
#ifdef DLL_SUPPORT
|
||
+ (pe_dll_search_prefix
|
||
? strlen (pe_dll_search_prefix) : 0)
|
||
#endif
|
||
/* Allow for the terminating NUL and for the path
|
||
separator character that is inserted between
|
||
search->name and the start of the format string. */
|
||
+ 2);
|
||
|
||
sprintf (full_string, "%s/", search->name);
|
||
base_string = full_string + strlen (full_string);
|
||
|
||
for (i = 0; libname_fmt[i].format; i++)
|
||
{
|
||
#ifdef DLL_SUPPORT
|
||
if (libname_fmt[i].use_prefix)
|
||
{
|
||
if (!pe_dll_search_prefix)
|
||
continue;
|
||
sprintf (base_string, libname_fmt[i].format, pe_dll_search_prefix, filename);
|
||
}
|
||
else
|
||
#endif
|
||
sprintf (base_string, libname_fmt[i].format, filename);
|
||
|
||
if (ldfile_try_open_bfd (full_string, entry))
|
||
break;
|
||
}
|
||
|
||
if (!libname_fmt[i].format)
|
||
{
|
||
free (full_string);
|
||
return FALSE;
|
||
}
|
||
|
||
entry->filename = full_string;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static int
|
||
gld_${EMULATION_NAME}_find_potential_libraries
|
||
(char *name, lang_input_statement_type *entry)
|
||
{
|
||
return ldfile_open_file_search (name, entry, "", ".lib");
|
||
}
|
||
|
||
static char *
|
||
gld_${EMULATION_NAME}_get_script (int *isfile)
|
||
EOF
|
||
# Scripts compiled in.
|
||
# sed commands to quote an ld script as a C string.
|
||
sc="-f stringify.sed"
|
||
|
||
fragment <<EOF
|
||
{
|
||
*isfile = 0;
|
||
|
||
if (bfd_link_relocatable (&link_info) && config.build_constructors)
|
||
return
|
||
EOF
|
||
sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
|
||
echo ' ; else if (bfd_link_relocatable (&link_info)) return' >> e${EMULATION_NAME}.c
|
||
sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
|
||
echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
|
||
sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
|
||
echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
|
||
sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
|
||
if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then
|
||
echo ' ; else if (link_info.pei386_auto_import == 1 && (MERGE_RDATA_V2 || link_info.pei386_runtime_pseudo_reloc != 2)) return' >> e${EMULATION_NAME}.c
|
||
sed $sc ldscripts/${EMULATION_NAME}.xa >> e${EMULATION_NAME}.c
|
||
fi
|
||
echo ' ; else return' >> e${EMULATION_NAME}.c
|
||
sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
|
||
echo '; }' >> e${EMULATION_NAME}.c
|
||
|
||
fragment <<EOF
|
||
|
||
|
||
struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
|
||
{
|
||
gld_${EMULATION_NAME}_before_parse,
|
||
syslib_default,
|
||
hll_default,
|
||
gld_${EMULATION_NAME}_after_parse,
|
||
gld_${EMULATION_NAME}_after_open,
|
||
after_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
|