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author | Nick Clifton <nickc@redhat.com> | 2006-09-20 11:35:11 +0000 |
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committer | Nick Clifton <nickc@redhat.com> | 2006-09-20 11:35:11 +0000 |
commit | 99ad839030c1177eb409a99320fa7e60226f0db3 (patch) | |
tree | 31841958e04c69ceb1aeafcf7cdef5e721d23829 /ld/emultempl | |
parent | a8bbe5b03e6b16a41a69e570061e34014d30431a (diff) | |
download | gdb-99ad839030c1177eb409a99320fa7e60226f0db3.zip gdb-99ad839030c1177eb409a99320fa7e60226f0db3.tar.gz gdb-99ad839030c1177eb409a99320fa7e60226f0db3.tar.bz2 |
Add x86_64-mingw64 target
Diffstat (limited to 'ld/emultempl')
-rw-r--r-- | ld/emultempl/pep.em | 1706 |
1 files changed, 1706 insertions, 0 deletions
diff --git a/ld/emultempl/pep.em b/ld/emultempl/pep.em new file mode 100644 index 0000000..3fa6ca4 --- /dev/null +++ b/ld/emultempl/pep.em @@ -0,0 +1,1706 @@ +# This shell script emits a C file. -*- C -*- +# It does some substitutions. +test -z "${ENTRY}" && ENTRY="_mainCRTStartup" +if [ -z "$MACHINE" ]; then + OUTPUT_ARCH=${ARCH} +else + OUTPUT_ARCH=${ARCH}:${MACHINE} +fi +rm -f e${EMULATION_NAME}.c +(echo;echo;echo;echo;echo)>e${EMULATION_NAME}.c # there, now line numbers match ;-) +cat >>e${EMULATION_NAME}.c <<EOF +/* This file is part of GLD, the Gnu Linker. + Copyright 2006 Free Software Foundation, Inc. + + 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 2 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. + + Written by Kai Tietz, OneVision Software GmbH&CoKg. */ + +/* For WINDOWS_XP64 and higher */ +/* Based on pe.em, but modified for 64 bit support. */ + +#define TARGET_IS_${EMULATION_NAME} + +#define COFF_IMAGE_WITH_PE +#define COFF_WITH_PE +#define COFF_WITH_pex64 + +#include "bfd.h" +#include "sysdep.h" +#include "bfdlink.h" +#include "getopt.h" +#include "libiberty.h" +#include "ld.h" +#include "ldmain.h" +#include "ldexp.h" +#include "ldlang.h" +#include "ldfile.h" +#include "ldemul.h" +#include <ldgram.h> +#include "ldlex.h" +#include "ldmisc.h" +#include "ldctor.h" +#include "coff/internal.h" + +/* FIXME: See bfd/peXXigen.c for why we include an architecture specific + header in generic PE code. */ +#include "coff/x86_64.h" +#include "coff/pe.h" + +/* FIXME: This is a BFD internal header file, and we should not be + using it here. */ +#include "../bfd/libcoff.h" + +#undef AOUTSZ +#define AOUTSZ PEPAOUTSZ +#define PEAOUTHDR PEPAOUTHDR + +#include "deffile.h" +#include "pep-dll.h" +#include "safe-ctype.h" + +/* Permit the emulation parameters to override the default section + alignment by setting OVERRIDE_SECTION_ALIGNMENT. FIXME: This makes + it seem that include/coff/internal.h should not define + PE_DEF_SECTION_ALIGNMENT. */ +#if PE_DEF_SECTION_ALIGNMENT != ${OVERRIDE_SECTION_ALIGNMENT:-PE_DEF_SECTION_ALIGNMENT} +#undef PE_DEF_SECTION_ALIGNMENT +#define PE_DEF_SECTION_ALIGNMENT ${OVERRIDE_SECTION_ALIGNMENT} +#endif + +#ifdef TARGET_IS_i386pep +#define DLL_SUPPORT +#endif + +#if defined(TARGET_IS_i386pep) || ! defined(DLL_SUPPORT) +#define PE_DEF_SUBSYSTEM 3 +#else +#undef NT_EXE_IMAGE_BASE +#define NT_EXE_IMAGE_BASE 0x00010000 +#undef PE_DEF_SECTION_ALIGNMENT +#define PE_DEF_SUBSYSTEM 2 +#undef PE_DEF_FILE_ALIGNMENT +#define PE_DEF_FILE_ALIGNMENT 0x00000200 +#define PE_DEF_SECTION_ALIGNMENT 0x00000400 +#endif + + +static struct internal_extra_pe_aouthdr pep; +static int dll; +static flagword real_flags = IMAGE_FILE_LARGE_ADDRESS_AWARE; +static int support_old_code = 0; +static lang_assignment_statement_type *image_base_statement = 0; + +#ifdef DLL_SUPPORT +static int pep_enable_stdcall_fixup = -1; /* 0=disable 1=enable. */ +static char * pep_out_def_filename = NULL; +static char * pep_implib_filename = NULL; +static int pep_enable_auto_image_base = 0; +static char * pep_dll_search_prefix = NULL; +#endif + +extern const char *output_filename; + +static void +gld_${EMULATION_NAME}_before_parse (void) +{ + ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`); + output_filename = "${EXECUTABLE_NAME:-a.exe}"; +#ifdef DLL_SUPPORT + config.dynamic_link = TRUE; + config.has_shared = 1; + link_info.pei386_auto_import = -1; + link_info.pei386_runtime_pseudo_reloc = -1; + +#if (PE_DEF_SUBSYSTEM == 9) || (PE_DEF_SUBSYSTEM == 2) + lang_default_entry ("_WinMainCRTStartup"); +#else + lang_default_entry ("${ENTRY}"); +#endif +#endif +} + +/* PE format extra command line options. */ + +/* Used for setting flags in the PE header. */ +enum options +{ + OPTION_BASE_FILE = 300 + 1, + OPTION_DLL, + OPTION_FILE_ALIGNMENT, + OPTION_IMAGE_BASE, + OPTION_MAJOR_IMAGE_VERSION, + OPTION_MAJOR_OS_VERSION, + OPTION_MAJOR_SUBSYSTEM_VERSION, + OPTION_MINOR_IMAGE_VERSION, + OPTION_MINOR_OS_VERSION, + OPTION_MINOR_SUBSYSTEM_VERSION, + OPTION_SECTION_ALIGNMENT, + OPTION_STACK, + OPTION_SUBSYSTEM, + OPTION_HEAP, + OPTION_SUPPORT_OLD_CODE, + OPTION_OUT_DEF, + OPTION_EXPORT_ALL, + OPTION_EXCLUDE_SYMBOLS, + OPTION_KILL_ATS, + OPTION_STDCALL_ALIASES, + OPTION_ENABLE_STDCALL_FIXUP, + OPTION_DISABLE_STDCALL_FIXUP, + OPTION_IMPLIB_FILENAME, + OPTION_WARN_DUPLICATE_EXPORTS, + OPTION_IMP_COMPAT, + OPTION_ENABLE_AUTO_IMAGE_BASE, + OPTION_DISABLE_AUTO_IMAGE_BASE, + OPTION_DLL_SEARCH_PREFIX, + OPTION_NO_DEFAULT_EXCLUDES, + OPTION_DLL_ENABLE_AUTO_IMPORT, + OPTION_DLL_DISABLE_AUTO_IMPORT, + OPTION_ENABLE_EXTRA_PE_DEBUG, + OPTION_EXCLUDE_LIBS, + OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC, + OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC +}; + +static void +gld${EMULATION_NAME}_add_options + (int ns ATTRIBUTE_UNUSED, + char **shortopts ATTRIBUTE_UNUSED, + int nl, + struct option **longopts, + int nrl ATTRIBUTE_UNUSED, + struct option **really_longopts ATTRIBUTE_UNUSED) +{ + static const struct option xtra_long[] = + { + /* PE options */ + {"base-file", required_argument, NULL, OPTION_BASE_FILE}, + {"dll", no_argument, NULL, OPTION_DLL}, + {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT}, + {"heap", required_argument, NULL, OPTION_HEAP}, + {"image-base", required_argument, NULL, OPTION_IMAGE_BASE}, + {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION}, + {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION}, + {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION}, + {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION}, + {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION}, + {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION}, + {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT}, + {"stack", required_argument, NULL, OPTION_STACK}, + {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM}, + {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE}, +#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-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS}, + {"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}, + {"out-implib", required_argument, NULL, OPTION_IMPLIB_FILENAME}, + {"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", no_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-pep-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}, +#endif + {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; +} definfo; + +#define D(field,symbol,def) {&pep.field,sizeof(pep.field), def, symbol,0} + +static definfo init[] = +{ + /* imagebase must be first */ +#define IMAGEBASEOFF 0 + D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE), +#define DLLOFF 1 + {&dll, sizeof(dll), 0, "__dll__", 0}, +#define MSIMAGEBASEOFF 2 + D(ImageBase,"__ImageBase", NT_EXE_IMAGE_BASE), + D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT), + D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT), + D(MajorOperatingSystemVersion,"__major_os_version__", 4), + D(MinorOperatingSystemVersion,"__minor_os_version__", 0), + D(MajorImageVersion,"__major_image_version__", 0), + D(MinorImageVersion,"__minor_image_version__", 0), + D(MajorSubsystemVersion,"__major_subsystem_version__", 5), + D(MinorSubsystemVersion,"__minor_subsystem_version__", 2), + D(Subsystem,"__subsystem__", ${SUBSYSTEM}), + D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000), + D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000), + D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000), + D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000), + D(LoaderFlags,"__loader_flags__", 0x0), + { NULL, 0, 0, NULL, 0 } +}; + + +static void +gld_${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")); +#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-libs lib,lib,... Exclude libraries from automatic export\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, _(" --out-implib <file> Generate import library\n")); + fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n")); + fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports.\n")); + fprintf (file, _(" --compat-implib Create backward compatible import libs;\n\ + create __imp_<SYMBOL> as well.\n")); + fprintf (file, _(" --enable-auto-image-base Automatically choose image base for DLLs\n\ + unless user specifies one\n")); + fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n")); + fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll without\n\ + an importlib, use <string><basename>.dll\n\ + in preference to lib<basename>.dll \n")); + fprintf (file, _(" --enable-auto-import Do sophistcated linking of _sym to\n\ + __imp_sym for DATA references\n")); + fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n")); + fprintf (file, _(" --enable-runtime-pseudo-reloc Work around auto-import limitations by\n\ + adding pseudo-relocations resolved at\n\ + runtime.\n")); + fprintf (file, _(" --disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for\n\ + auto-imported DATA.\n")); + fprintf (file, _(" --enable-extra-pep-debug Enable verbose debug output when building\n\ + or linking to DLLs (esp. auto-import)\n")); +#endif +} + + +static void +set_pep_name (char *name, long val) +{ + int i; + + /* Find the name and set it. */ + for (i = 0; init[i].ptr; i++) + { + if (strcmp (name, init[i].symbol) == 0) + { + init[i].value = val; + init[i].inited = 1; + if (strcmp (name,"__image_base__") == 0) + set_pep_name ("__ImageBase", val); + return; + } + } + abort (); +} + + +static void +set_pep_subsystem (void) +{ + const char *sver; + const char *entry; + const char *initial_symbol_char; + char *end; + int len; + int i; + int subsystem; + unsigned long temp_subsystem; + static const struct + { + const char *name; + const int value; + const char *entry; + } + v[] = + { + { "native", 1, "NtProcessStartup" }, + { "windows", 2, "WinMainCRTStartup" }, + { "console", 3, "mainCRTStartup" }, + { "posix", 7, "__PosixProcessStartup"}, + { "wince", 9, "_WinMainCRTStartup" }, + { "xbox", 14, "mainCRTStartup" }, + { NULL, 0, NULL } + }; + /* Entry point name for arbitrary subsystem numbers. */ + static const char default_entry[] = "mainCRTStartup"; + + /* Check for the presence of a version number. */ + sver = strchr (optarg, ':'); + if (sver == NULL) + len = strlen (optarg); + else + { + len = sver - optarg; + set_pep_name ("__major_subsystem_version__", + strtoul (sver + 1, &end, 0)); + if (*end == '.') + set_pep_name ("__minor_subsystem_version__", + strtoul (end + 1, &end, 0)); + if (*end != '\0') + einfo (_("%P: warning: bad version number in -subsystem option\n")); + } + + /* Check for numeric subsystem. */ + temp_subsystem = strtoul (optarg, & end, 0); + if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536)) + { + /* Search list for a numeric match to use its entry point. */ + for (i = 0; v[i].name; i++) + if (v[i].value == (int) temp_subsystem) + break; + + /* If no match, use the default. */ + if (v[i].name != NULL) + entry = v[i].entry; + else + entry = default_entry; + + /* Use this subsystem. */ + subsystem = (int) temp_subsystem; + } + else + { + /* Search for subsystem by name. */ + for (i = 0; v[i].name; i++) + if (strncmp (optarg, v[i].name, len) == 0 + && v[i].name[len] == '\0') + break; + + if (v[i].name == NULL) + { + einfo (_("%P%F: invalid subsystem type %s\n"), optarg); + return; + } + + entry = v[i].entry; + subsystem = v[i].value; + } + + set_pep_name ("__subsystem__", subsystem); + + initial_symbol_char = ${INITIAL_SYMBOL_CHAR}; + if (*initial_symbol_char != '\0') + { + char *alc_entry; + + /* lang_default_entry expects its argument to be permanently + allocated, so we don't free this string. */ + alc_entry = xmalloc (strlen (initial_symbol_char) + + strlen (entry) + + 1); + strcpy (alc_entry, initial_symbol_char); + strcat (alc_entry, entry); + entry = alc_entry; + } + + lang_default_entry (entry); + + return; +} + + +static void +set_pep_value (char *name) +{ + char *end; + + set_pep_name (name, strtoul (optarg, &end, 0)); + + if (end == optarg) + einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg); + + optarg = end; +} + + +static void +set_pep_stack_heap (char *resname, char *comname) +{ + set_pep_value (resname); + + if (*optarg == ',') + { + optarg++; + set_pep_value (comname); + } + else if (*optarg) + einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg); +} + + +static bfd_boolean +gld${EMULATION_NAME}_handle_option (int optc) +{ + switch (optc) + { + default: + return FALSE; + + case OPTION_BASE_FILE: + link_info.base_file = fopen (optarg, FOPEN_WB); + if (link_info.base_file == NULL) + { + /* xgettext:c-format */ + fprintf (stderr, _("%s: Can't open base file %s\n"), + program_name, optarg); + xexit (1); + } + break; + + /* PE options. */ + case OPTION_HEAP: + set_pep_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__"); + break; + case OPTION_STACK: + set_pep_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__"); + break; + case OPTION_SUBSYSTEM: + set_pep_subsystem (); + break; + case OPTION_MAJOR_OS_VERSION: + set_pep_value ("__major_os_version__"); + break; + case OPTION_MINOR_OS_VERSION: + set_pep_value ("__minor_os_version__"); + break; + case OPTION_MAJOR_SUBSYSTEM_VERSION: + set_pep_value ("__major_subsystem_version__"); + break; + case OPTION_MINOR_SUBSYSTEM_VERSION: + set_pep_value ("__minor_subsystem_version__"); + break; + case OPTION_MAJOR_IMAGE_VERSION: + set_pep_value ("__major_image_version__"); + break; + case OPTION_MINOR_IMAGE_VERSION: + set_pep_value ("__minor_image_version__"); + break; + case OPTION_FILE_ALIGNMENT: + set_pep_value ("__file_alignment__"); + break; + case OPTION_SECTION_ALIGNMENT: + set_pep_value ("__section_alignment__"); + break; + case OPTION_DLL: + set_pep_name ("__dll__", 1); + break; + case OPTION_IMAGE_BASE: + set_pep_value ("__image_base__"); + break; + case OPTION_SUPPORT_OLD_CODE: + support_old_code = 1; + break; +#ifdef DLL_SUPPORT + case OPTION_OUT_DEF: + pep_out_def_filename = xstrdup (optarg); + break; + case OPTION_EXPORT_ALL: + pep_dll_export_everything = 1; + break; + case OPTION_EXCLUDE_SYMBOLS: + pep_dll_add_excludes (optarg, 0); + break; + case OPTION_EXCLUDE_LIBS: + pep_dll_add_excludes (optarg, 1); + break; + case OPTION_KILL_ATS: + pep_dll_kill_ats = 1; + break; + case OPTION_STDCALL_ALIASES: + pep_dll_stdcall_aliases = 1; + break; + case OPTION_ENABLE_STDCALL_FIXUP: + pep_enable_stdcall_fixup = 1; + break; + case OPTION_DISABLE_STDCALL_FIXUP: + pep_enable_stdcall_fixup = 0; + break; + case OPTION_IMPLIB_FILENAME: + pep_implib_filename = xstrdup (optarg); + break; + case OPTION_WARN_DUPLICATE_EXPORTS: + pep_dll_warn_dup_exports = 1; + break; + case OPTION_IMP_COMPAT: + pep_dll_compat_implib = 1; + break; + case OPTION_ENABLE_AUTO_IMAGE_BASE: + pep_enable_auto_image_base = 1; + break; + case OPTION_DISABLE_AUTO_IMAGE_BASE: + pep_enable_auto_image_base = 0; + break; + case OPTION_DLL_SEARCH_PREFIX: + pep_dll_search_prefix = xstrdup (optarg); + break; + case OPTION_NO_DEFAULT_EXCLUDES: + pep_dll_do_default_excludes = 0; + break; + case OPTION_DLL_ENABLE_AUTO_IMPORT: + link_info.pei386_auto_import = 1; + break; + case OPTION_DLL_DISABLE_AUTO_IMPORT: + link_info.pei386_auto_import = 0; + break; + case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC: + link_info.pei386_runtime_pseudo_reloc = 1; + break; + case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC: + link_info.pei386_runtime_pseudo_reloc = 0; + break; + case OPTION_ENABLE_EXTRA_PE_DEBUG: + pep_dll_extra_pe_debug = 1; + break; +#endif + } + return TRUE; +} + + +#ifdef DLL_SUPPORT +static unsigned long +strhash (const char *str) +{ + const unsigned char *s; + unsigned long hash; + unsigned int c; + unsigned int len; + + hash = 0; + len = 0; + s = (const unsigned char *) str; + while ((c = *s++) != '\0') + { + hash += c + (c << 17); + hash ^= hash >> 2; + ++len; + } + hash += len + (len << 17); + hash ^= hash >> 2; + + return hash; +} + +/* Use the output file to create a image base for relocatable DLLs. */ + +static unsigned long +compute_dll_image_base (const char *ofile) +{ + unsigned long hash = strhash (ofile); + return 0x61300000 + ((hash << 16) & 0x0FFC0000); +} +#endif + +/* Assign values to the special symbols before the linker script is + read. */ + +static void +gld_${EMULATION_NAME}_set_symbols (void) +{ + /* Run through and invent symbols for all the + names and insert the defaults. */ + int j; + lang_statement_list_type *save; + + if (!init[IMAGEBASEOFF].inited) + { + if (link_info.relocatable) + init[IMAGEBASEOFF].value = 0; + else if (init[DLLOFF].value || (link_info.shared && !link_info.pie)) +#ifdef DLL_SUPPORT + init[IMAGEBASEOFF].value = (pep_enable_auto_image_base) ? + compute_dll_image_base (output_filename) : NT_DLL_IMAGE_BASE; +#else + init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE; +#endif + else + init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE; + init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value; + } + + /* Don't do any symbol assignments if this is a relocatable link. */ + if (link_info.relocatable) + return; + + /* Glue the assignments into the abs section. */ + save = stat_ptr; + + stat_ptr = &(abs_output_section->children); + + for (j = 0; init[j].ptr; j++) + { + long val = init[j].value; + lang_assignment_statement_type *rv; + rv = lang_add_assignment (exp_assop ('=', init[j].symbol, + exp_intop (val))); + if (init[j].size == sizeof (short)) + *(short *) init[j].ptr = val; + else if (init[j].size == sizeof (int)) + *(int *) init[j].ptr = val; + else if (init[j].size == sizeof (long)) + *(long *) init[j].ptr = val; + /* This might be a long long or other special type. */ + else if (init[j].size == sizeof (bfd_vma)) + *(bfd_vma *) init[j].ptr = val; + else abort (); + if (j == IMAGEBASEOFF) + image_base_statement = rv; + } + /* Restore the pointer. */ + stat_ptr = save; + + if (pep.FileAlignment > pep.SectionAlignment) + { + einfo (_("%P: warning, file alignment > section alignment.\n")); + } +} + +/* This is called after the linker script and the command line options + have been read. */ + +static void +gld_${EMULATION_NAME}_after_parse (void) +{ + /* The Windows libraries are designed for the linker to treat the + entry point as an undefined symbol. Otherwise, the .obj that + defines mainCRTStartup is brought in because it is the first + encountered in libc.lib and it has other symbols in it which will + be pulled in by the link process. To avoid this, we act as + though the user specified -u with the entry point symbol. + + This function is called after the linker script and command line + options have been read, so at this point we know the right entry + point. This function is called before the input files are + opened, so registering the symbol as undefined will make a + difference. */ + + if (! link_info.relocatable && entry_symbol.name != NULL) + ldlang_add_undef (entry_symbol.name); +} + +/* pep-dll.c directly accesses pep_data_import_dll, + so it must be defined outside of #ifdef DLL_SUPPORT. + Note - this variable is deliberately not initialised. + This allows it to be treated as a common varaible, and only + exist in one incarnation in a multiple target enabled linker. */ +char * pep_data_import_dll; + +#ifdef DLL_SUPPORT +static struct bfd_link_hash_entry *pep_undef_found_sym; + +static bfd_boolean +pep_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf) +{ + int sl; + char *string = inf; + + sl = strlen (string); + if (h->type == bfd_link_hash_defined + && strncmp (h->root.string, string, sl) == 0 + && h->root.string[sl] == '@') + { + pep_undef_found_sym = h; + return FALSE; + } + return TRUE; +} + +static void +pep_fixup_stdcalls (void) +{ + static int gave_warning_message = 0; + struct bfd_link_hash_entry *undef, *sym; + + if (pep_dll_extra_pe_debug) + printf ("%s\n", __FUNCTION__); + + for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next) + if (undef->type == bfd_link_hash_undefined) + { + char* at = strchr (undef->root.string, '@'); + int lead_at = (*undef->root.string == '@'); + /* For now, don't try to fixup fastcall symbols. */ + + if (at && !lead_at) + { + /* The symbol is a stdcall symbol, so let's look for a + cdecl symbol with the same name and resolve to that. */ + char *cname = xstrdup (undef->root.string /* + lead_at */); + at = strchr (cname, '@'); + *at = 0; + sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1); + + if (sym && sym->type == bfd_link_hash_defined) + { + undef->type = bfd_link_hash_defined; + undef->u.def.value = sym->u.def.value; + undef->u.def.section = sym->u.def.section; + + if (pep_enable_stdcall_fixup == -1) + { + einfo (_("Warning: resolving %s by linking to %s\n"), + undef->root.string, cname); + if (! gave_warning_message) + { + gave_warning_message = 1; + einfo (_("Use --enable-stdcall-fixup to disable these warnings\n")); + einfo (_("Use --disable-stdcall-fixup to disable these fixups\n")); + } + } + } + } + else + { + /* The symbol is a cdecl symbol, so we look for stdcall + symbols - which means scanning the whole symbol table. */ + pep_undef_found_sym = 0; + bfd_link_hash_traverse (link_info.hash, pep_undef_cdecl_match, + (char *) undef->root.string); + sym = pep_undef_found_sym; + if (sym) + { + undef->type = bfd_link_hash_defined; + undef->u.def.value = sym->u.def.value; + undef->u.def.section = sym->u.def.section; + + if (pep_enable_stdcall_fixup == -1) + { + einfo (_("Warning: resolving %s by linking to %s\n"), + undef->root.string, sym->root.string); + if (! gave_warning_message) + { + gave_warning_message = 1; + einfo (_("Use --enable-stdcall-fixup to disable these warnings\n")); + einfo (_("Use --disable-stdcall-fixup to disable these fixups\n")); + } + } + } + } + } +} + +static int +make_import_fixup (arelent *rel, asection *s) +{ + struct bfd_symbol *sym = *rel->sym_ptr_ptr; + char addend[4]; + + if (pep_dll_extra_pe_debug) + printf ("arelent: %s@%#lx: add=%li\n", sym->name, + (long) rel->address, (long) rel->addend); + + if (! bfd_get_section_contents (s->owner, s, addend, rel->address, sizeof (addend))) + einfo (_("%C: Cannot get section contents - auto-import exception\n"), + s->owner, s, rel->address); + + pep_create_import_fixup (rel, s, bfd_get_32 (s->owner, addend)); + + return 1; +} + +static void +pep_find_data_imports (void) +{ + struct bfd_link_hash_entry *undef, *sym; + + if (link_info.pei386_auto_import == 0) + return; + + for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next) + { + if (undef->type == bfd_link_hash_undefined) + { + /* C++ symbols are *long*. */ + char buf[4096]; + + if (pep_dll_extra_pe_debug) + printf ("%s:%s\n", __FUNCTION__, undef->root.string); + + sprintf (buf, "__imp_%s", undef->root.string); + + sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1); + + if (sym && sym->type == bfd_link_hash_defined) + { + bfd *b = sym->u.def.section->owner; + asymbol **symbols; + int nsyms, symsize, i; + + if (link_info.pei386_auto_import == -1) + info_msg (_("Info: resolving %s by linking to %s (auto-import)\n"), + undef->root.string, buf); + + symsize = bfd_get_symtab_upper_bound (b); + symbols = xmalloc (symsize); + nsyms = bfd_canonicalize_symtab (b, symbols); + + for (i = 0; i < nsyms; i++) + { + if (! CONST_STRNEQ (symbols[i]->name, "__head_")) + continue; + + if (pep_dll_extra_pe_debug) + printf ("->%s\n", symbols[i]->name); + + pep_data_import_dll = (char*) (symbols[i]->name + + sizeof ("__head_") - 1); + break; + } + + pep_walk_relocs_of_symbol (&link_info, undef->root.string, + make_import_fixup); + + /* Let's differentiate it somehow from defined. */ + undef->type = bfd_link_hash_defweak; + /* We replace original name with __imp_ prefixed, this + 1) may trash memory 2) leads to duplicate symbol generation. + Still, IMHO it's better than having name poluted. */ + undef->root.string = sym->root.string; + undef->u.def.value = sym->u.def.value; + undef->u.def.section = sym->u.def.section; + } + } + } +} + +static bfd_boolean +pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED) +{ + if (pep_dll_extra_pe_debug) + printf ("+%s\n", h->string); + + return TRUE; +} +#endif /* DLL_SUPPORT */ + + +static void +gld_${EMULATION_NAME}_after_open (void) +{ +#ifdef DLL_SUPPORT + if (pep_dll_extra_pe_debug) + { + bfd *a; + struct bfd_link_hash_entry *sym; + + printf ("%s()\n", __FUNCTION__); + + for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next) + printf ("-%s\n", sym->root.string); + bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL); + + for (a = link_info.input_bfds; a; a = a->link_next) + printf ("*%s\n",a->filename); + } +#endif + + /* Pass the wacky PE command line options into the output bfd. + FIXME: This should be done via a function, rather than by + including an internal BFD header. */ + + if (coff_data (output_bfd) == NULL || coff_data (output_bfd)->pe == 0) + einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"), output_bfd); + + pe_data (output_bfd)->pe_opthdr = pep; + pe_data (output_bfd)->dll = init[DLLOFF].value; + pe_data (output_bfd)->real_flags |= real_flags; + +#ifdef DLL_SUPPORT + if (pep_enable_stdcall_fixup) /* -1=warn or 1=disable */ + pep_fixup_stdcalls (); + + pep_process_import_defs (output_bfd, & link_info); + + pep_find_data_imports (); + +#ifndef TARGET_IS_i386pep + if (link_info.shared) +#else + if (!link_info.relocatable) +#endif + pep_dll_build_sections (output_bfd, &link_info); + +#ifndef TARGET_IS_i386pep + else + pep_exe_build_sections (output_bfd, &link_info); +#endif +#endif /* DLL_SUPPORT */ + + { + /* This next chunk of code tries to detect the case where you have + two import libraries for the same DLL (specifically, + symbolically linking libm.a and libc.a in cygwin to + libcygwin.a). In those cases, it's possible for function + thunks from the second implib to be used but without the + head/tail objects, causing an improper import table. We detect + those cases and rename the "other" import libraries to match + the one the head/tail come from, so that the linker will sort + things nicely and produce a valid import table. */ + + LANG_FOR_EACH_INPUT_STATEMENT (is) + { + if (is->the_bfd->my_archive) + { + int idata2 = 0, reloc_count=0, is_imp = 0; + asection *sec; + + /* See if this is an import library thunk. */ + for (sec = is->the_bfd->sections; sec; sec = sec->next) + { + if (strcmp (sec->name, ".idata\$2") == 0) + idata2 = 1; + if (CONST_STRNEQ (sec->name, ".idata\$")) + is_imp = 1; + reloc_count += sec->reloc_count; + } + + if (is_imp && !idata2 && reloc_count) + { + /* It is, look for the reference to head and see if it's + from our own library. */ + for (sec = is->the_bfd->sections; sec; sec = sec->next) + { + int i; + long symsize; + long relsize; + asymbol **symbols; + arelent **relocs; + int nrelocs; + + symsize = bfd_get_symtab_upper_bound (is->the_bfd); + if (symsize < 1) + break; + relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec); + if (relsize < 1) + break; + + symbols = xmalloc (symsize); + symsize = bfd_canonicalize_symtab (is->the_bfd, symbols); + if (symsize < 0) + { + einfo ("%X%P: unable to process symbols: %E"); + return; + } + + relocs = xmalloc ((size_t) relsize); + nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec, + relocs, symbols); + if (nrelocs < 0) + { + free (relocs); + einfo ("%X%P: unable to process relocs: %E"); + return; + } + + for (i = 0; i < nrelocs; i++) + { + struct bfd_symbol *s; + struct bfd_link_hash_entry * blhe; + char *other_bfd_filename; + char *n; + + s = (relocs[i]->sym_ptr_ptr)[0]; + + if (s->flags & BSF_LOCAL) + continue; + + /* Thunk section with reloc to another bfd. */ + blhe = bfd_link_hash_lookup (link_info.hash, + s->name, + FALSE, FALSE, TRUE); + + if (blhe == NULL + || blhe->type != bfd_link_hash_defined) + continue; + + other_bfd_filename + = blhe->u.def.section->owner->my_archive + ? bfd_get_filename (blhe->u.def.section->owner->my_archive) + : bfd_get_filename (blhe->u.def.section->owner); + + if (strcmp (bfd_get_filename (is->the_bfd->my_archive), + other_bfd_filename) == 0) + continue; + + /* Rename this implib to match the other one. */ + n = xmalloc (strlen (other_bfd_filename) + 1); + strcpy (n, other_bfd_filename); + is->the_bfd->my_archive->filename = n; + } + + free (relocs); + /* Note - we do not free the symbols, + they are now cached in the BFD. */ + } + } + } + } + } + + { + int is_ms_arch = 0; + bfd *cur_arch = 0; + lang_input_statement_type *is2; + lang_input_statement_type *is3; + + /* Careful - this is a shell script. Watch those dollar signs! */ + /* Microsoft import libraries have every member named the same, + and not in the right order for us to link them correctly. We + must detect these and rename the members so that they'll link + correctly. There are three types of objects: the head, the + thunks, and the sentinel(s). The head is easy; it's the one + with idata2. We assume that the sentinels won't have relocs, + and the thunks will. It's easier than checking the symbol + table for external references. */ + LANG_FOR_EACH_INPUT_STATEMENT (is) + { + if (is->the_bfd->my_archive) + { + char *pnt; + bfd *arch = is->the_bfd->my_archive; + + if (cur_arch != arch) + { + cur_arch = arch; + is_ms_arch = 1; + + for (is3 = is; + is3 && is3->the_bfd->my_archive == arch; + is3 = (lang_input_statement_type *) is3->next) + { + /* A MS dynamic import library can also contain static + members, so look for the first element with a .dll + extension, and use that for the remainder of the + comparisons. */ + pnt = strrchr (is3->the_bfd->filename, '.'); + if (pnt != NULL && strcmp (pnt, ".dll") == 0) + break; + } + + if (is3 == NULL) + is_ms_arch = 0; + else + { + /* OK, found one. Now look to see if the remaining + (dynamic import) members use the same name. */ + for (is2 = is; + is2 && is2->the_bfd->my_archive == arch; + is2 = (lang_input_statement_type *) is2->next) + { + /* Skip static members, ie anything with a .obj + extension. */ + pnt = strrchr (is2->the_bfd->filename, '.'); + if (pnt != NULL && strcmp (pnt, ".obj") == 0) + continue; + + if (strcmp (is3->the_bfd->filename, + is2->the_bfd->filename)) + { + is_ms_arch = 0; + break; + } + } + } + } + + /* This fragment might have come from an .obj file in a Microsoft + import, and not an actual import record. If this is the case, + then leave the filename alone. */ + pnt = strrchr (is->the_bfd->filename, '.'); + + if (is_ms_arch && (strcmp (pnt, ".dll") == 0)) + { + int idata2 = 0, reloc_count=0; + asection *sec; + char *new_name, seq; + + for (sec = is->the_bfd->sections; sec; sec = sec->next) + { + if (strcmp (sec->name, ".idata\$2") == 0) + idata2 = 1; + reloc_count += sec->reloc_count; + } + + if (idata2) /* .idata2 is the TOC */ + seq = 'a'; + else if (reloc_count > 0) /* thunks */ + seq = 'b'; + else /* sentinel */ + seq = 'c'; + + new_name = xmalloc (strlen (is->the_bfd->filename) + 3); + sprintf (new_name, "%s.%c", is->the_bfd->filename, seq); + is->the_bfd->filename = new_name; + + new_name = xmalloc (strlen (is->filename) + 3); + sprintf (new_name, "%s.%c", is->filename, seq); + is->filename = new_name; + } + } + } + } +} + +static void +gld_${EMULATION_NAME}_before_allocation (void) +{ + before_allocation_default (); +} + +#ifdef DLL_SUPPORT +/* This is called when an input file isn't recognized as a BFD. We + check here for .DEF files and pull them in automatically. */ + +static int +saw_option (char *option) +{ + int i; + + for (i = 0; init[i].ptr; i++) + if (strcmp (init[i].symbol, option) == 0) + return init[i].inited; + return 0; +} +#endif /* DLL_SUPPORT */ + +static bfd_boolean +gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED) +{ +#ifdef DLL_SUPPORT + const char *ext = entry->filename + strlen (entry->filename) - 4; + + if (strcmp (ext, ".def") == 0 || strcmp (ext, ".DEF") == 0) + { + pep_def_file = def_file_parse (entry->filename, pep_def_file); + + if (pep_def_file) + { + int i, buflen=0, len; + char *buf; + + for (i = 0; i < pep_def_file->num_exports; i++) + { + len = strlen (pep_def_file->exports[i].internal_name); + if (buflen < len + 2) + buflen = len + 2; + } + + buf = xmalloc (buflen); + + for (i = 0; i < pep_def_file->num_exports; i++) + { + struct bfd_link_hash_entry *h; + + sprintf (buf, "_%s", pep_def_file->exports[i].internal_name); + + h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE); + if (h == (struct bfd_link_hash_entry *) NULL) + einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); + if (h->type == bfd_link_hash_new) + { + h->type = bfd_link_hash_undefined; + h->u.undef.abfd = NULL; + bfd_link_add_undef (link_info.hash, h); + } + } + free (buf); + + /* def_file_print (stdout, pep_def_file); */ + if (pep_def_file->is_dll == 1) + link_info.shared = 1; + + if (pep_def_file->base_address != (bfd_vma)(-1)) + { + pep.ImageBase = + pe_data (output_bfd)->pe_opthdr.ImageBase = + init[IMAGEBASEOFF].value = pep_def_file->base_address; + init[IMAGEBASEOFF].inited = 1; + if (image_base_statement) + image_base_statement->exp = + exp_assop ('=', "__image_base__", exp_intop (pep.ImageBase)); + } + + if (pep_def_file->stack_reserve != -1 + && ! saw_option ("__size_of_stack_reserve__")) + { + pep.SizeOfStackReserve = pep_def_file->stack_reserve; + if (pep_def_file->stack_commit != -1) + pep.SizeOfStackCommit = pep_def_file->stack_commit; + } + if (pep_def_file->heap_reserve != -1 + && ! saw_option ("__size_of_heap_reserve__")) + { + pep.SizeOfHeapReserve = pep_def_file->heap_reserve; + if (pep_def_file->heap_commit != -1) + pep.SizeOfHeapCommit = pep_def_file->heap_commit; + } + return TRUE; + } + } +#endif + return FALSE; +} + +static bfd_boolean +gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED) +{ +#ifdef DLL_SUPPORT +#ifdef TARGET_IS_i386pep + pep_dll_id_target ("pei-x86-64"); +#endif + if (bfd_get_format (entry->the_bfd) == bfd_object) + { + char fbuf[LD_PATHMAX + 1]; + const char *ext; + + if (REALPATH (entry->filename, fbuf) == NULL) + strncpy (fbuf, entry->filename, sizeof (fbuf)); + + ext = fbuf + strlen (fbuf) - 4; + + if (strcmp (ext, ".dll") == 0 || strcmp (ext, ".DLL") == 0) + return pep_implied_import_dll (fbuf); + } +#endif + return FALSE; +} + +static void +gld_${EMULATION_NAME}_finish (void) +{ + finish_default (); + +#ifdef DLL_SUPPORT + if (link_info.shared + || (!link_info.relocatable && pep_def_file->num_exports != 0)) + { + pep_dll_fill_sections (output_bfd, &link_info); + if (pep_implib_filename) + pep_dll_generate_implib (pep_def_file, pep_implib_filename); + } + + if (pep_out_def_filename) + pep_dll_generate_def_file (pep_out_def_filename); +#endif /* DLL_SUPPORT */ + + /* I don't know where .idata gets set as code, but it shouldn't be. */ + { + asection *asec = bfd_get_section_by_name (output_bfd, ".idata"); + + if (asec) + { + asec->flags &= ~SEC_CODE; + asec->flags |= SEC_DATA; + } + } +} + + +/* Place an orphan section. + + We use this to put sections in a reasonable place in the file, and + to ensure that they are aligned as required. + + We handle grouped sections here as well. A section named .foo$nn + goes into the output section .foo. All grouped sections are sorted + by name. + + Grouped sections for the default sections are handled by the + default linker script using wildcards, and are sorted by + sort_sections. */ + +static bfd_boolean +gld_${EMULATION_NAME}_place_orphan (asection *s) +{ + const char *secname; + const char *orig_secname; + char *dollar = NULL; + lang_output_section_statement_type *os; + lang_statement_list_type add_child; + + secname = bfd_get_section_name (s->owner, s); + + /* Look through the script to see where to place this section. */ + orig_secname = secname; + if (!link_info.relocatable + && (dollar = strchr (secname, '$')) != NULL) + { + size_t len = dollar - orig_secname; + char *newname = xmalloc (len + 1); + memcpy (newname, orig_secname, len); + newname[len] = '\0'; + secname = newname; + } + + os = lang_output_section_find (secname); + + lang_list_init (&add_child); + + if (os != NULL + && (os->bfd_section == NULL + || os->bfd_section->flags == 0 + || ((s->flags ^ os->bfd_section->flags) + & (SEC_LOAD | SEC_ALLOC)) == 0)) + { + /* We already have an output section statement with this + name, and its bfd section, if any, has compatible flags. + If the section already exists but does not have any flags set, + then it has been created by the linker, probably as a result of + a --section-start command line switch. */ + lang_add_section (&add_child, s, os); + } + else + { + static struct orphan_save hold[] = + { + { ".text", + SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE, + 0, 0, 0, 0 }, + { ".rdata", + SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA, + 0, 0, 0, 0 }, + { ".data", + SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA, + 0, 0, 0, 0 }, + { ".bss", + SEC_ALLOC, + 0, 0, 0, 0 } + }; + enum orphan_save_index + { + orphan_text = 0, + orphan_rodata, + orphan_data, + orphan_bss + }; + static int orphan_init_done = 0; + struct orphan_save *place; + lang_output_section_statement_type *after; + etree_type *address; + + if (!orphan_init_done) + { + struct orphan_save *ho; + for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho) + if (ho->name != NULL) + { + ho->os = lang_output_section_find (ho->name); + if (ho->os != NULL && ho->os->flags == 0) + ho->os->flags = ho->flags; + } + orphan_init_done = 1; + } + + /* Try to put the new output section in a reasonable place based + on the section name and section flags. */ + + place = NULL; + if ((s->flags & SEC_ALLOC) == 0) + ; + else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) + place = &hold[orphan_bss]; + else if ((s->flags & SEC_READONLY) == 0) + place = &hold[orphan_data]; + else if ((s->flags & SEC_CODE) == 0) + place = &hold[orphan_rodata]; + else + place = &hold[orphan_text]; + + after = NULL; + if (place != NULL) + { + if (place->os == NULL) + place->os = lang_output_section_find (place->name); + after = place->os; + if (after == NULL) + after = lang_output_section_find_by_flags (s, &place->os, NULL); + if (after == NULL) + /* *ABS* is always the first output section statement. */ + after = (&lang_output_section_statement.head + ->output_section_statement); + } + + /* Choose a unique name for the section. This will be needed if the + same section name appears in the input file with different + loadable or allocatable characteristics. */ + if (bfd_get_section_by_name (output_bfd, secname) != NULL) + { + static int count = 1; + secname = bfd_get_unique_section_name (output_bfd, secname, &count); + if (secname == NULL) + einfo ("%F%P: place_orphan failed: %E\n"); + } + + /* All sections in an executable must be aligned to a page boundary. */ + address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__")); + os = lang_insert_orphan (s, secname, after, place, address, &add_child); + } + + { + lang_statement_union_type **pl = &os->children.head; + + if (dollar != NULL) + { + bfd_boolean found_dollar; + + /* The section name has a '$'. Sort it with the other '$' + sections. */ + found_dollar = FALSE; + for ( ; *pl != NULL; pl = &(*pl)->header.next) + { + lang_input_section_type *ls; + const char *lname; + + if ((*pl)->header.type != lang_input_section_enum) + continue; + + ls = &(*pl)->input_section; + + lname = bfd_get_section_name (ls->section->owner, ls->section); + if (strchr (lname, '$') == NULL) + { + if (found_dollar) + break; + } + else + { + found_dollar = TRUE; + if (strcmp (orig_secname, lname) < 0) + break; + } + } + } + + if (add_child.head != NULL) + { + add_child.head->header.next = *pl; + *pl = add_child.head; + } + } + + return TRUE; +} + +static bfd_boolean +gld_${EMULATION_NAME}_open_dynamic_archive + (const char *arch ATTRIBUTE_UNUSED, + search_dirs_type *search, + lang_input_statement_type *entry) +{ + static const struct + { + const char * format; + bfd_boolean use_prefix; + } + libname_fmt [] = + { + /* Preferred explicit import library for dll's. */ + { "lib%s.dll.a", FALSE }, + /* Alternate explicit import library for dll's. */ + { "%s.dll.a", FALSE }, + /* "libfoo.a" could be either an import lib or a static lib. + For backwards compatibility, libfoo.a needs to precede + libfoo.dll and foo.dll in the search. */ + { "lib%s.a", FALSE }, + /* The 'native' spelling of an import lib name is "foo.lib". */ + { "%s.lib", FALSE }, +#ifdef DLL_SUPPORT + /* Try "<prefix>foo.dll" (preferred dll name, if specified). */ + { "%s%s.dll", TRUE }, +#endif + /* Try "libfoo.dll" (default preferred dll name). */ + { "lib%s.dll", FALSE }, + /* Finally try 'native' dll name "foo.dll". */ + { "%s.dll", FALSE }, + /* Note: If adding more formats to this table, make sure to check to + see if their length is longer than libname_fmt[0].format, and if + so, update the call to xmalloc() below. */ + { NULL, FALSE } + }; + static unsigned int format_max_len = 0; + const char * filename; + char * full_string; + char * base_string; + unsigned int i; + + + if (! entry->is_archive) + return FALSE; + + filename = entry->filename; + + if (format_max_len == 0) + /* We need to allow space in the memory that we are going to allocate + for the characters in the format string. Since the format array is + static we only need to calculate this information once. In theory + this value could also be computed statically, but this introduces + the possibility for a discrepancy and hence a possible memory + corruption. The lengths we compute here will be too long because + they will include any formating characters (%s) in the strings, but + this will not matter. */ + for (i = 0; libname_fmt[i].format; i++) + if (format_max_len < strlen (libname_fmt[i].format)) + format_max_len = strlen (libname_fmt[i].format); + + full_string = xmalloc (strlen (search->name) + + strlen (filename) + + format_max_len +#ifdef DLL_SUPPORT + + (pep_dll_search_prefix + ? strlen (pep_dll_search_prefix) : 0) +#endif + /* Allow for the terminating NUL and for the path + separator character that is inserted between + search->name and the start of the format string. */ + + 2); + + sprintf (full_string, "%s/", search->name); + base_string = full_string + strlen (full_string); + + for (i = 0; libname_fmt[i].format; i++) + { +#ifdef DLL_SUPPORT + if (libname_fmt[i].use_prefix) + { + if (!pep_dll_search_prefix) + continue; + sprintf (base_string, libname_fmt[i].format, pep_dll_search_prefix, filename); + } + else +#endif + sprintf (base_string, libname_fmt[i].format, filename); + + if (ldfile_try_open_bfd (full_string, entry)) + break; + } + + if (!libname_fmt[i].format) + { + free (full_string); + return FALSE; + } + + entry->filename = full_string; + + return TRUE; +} + +static int +gld_${EMULATION_NAME}_find_potential_libraries + (char *name, lang_input_statement_type *entry) +{ + return ldfile_open_file_search (name, entry, "", ".lib"); +} + +static char * +gld_${EMULATION_NAME}_get_script (int *isfile) +EOF +# Scripts compiled in. +# sed commands to quote an ld script as a C string. +sc="-f stringify.sed" + +cat >>e${EMULATION_NAME}.c <<EOF +{ + *isfile = 0; + + if (link_info.relocatable && config.build_constructors) + return +EOF +sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c +echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c +sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c +echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c +sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c +echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c +sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c +echo ' ; else return' >> e${EMULATION_NAME}.c +sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c +echo '; }' >> e${EMULATION_NAME}.c + +cat >>e${EMULATION_NAME}.c <<EOF + + +struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = +{ + gld_${EMULATION_NAME}_before_parse, + syslib_default, + hll_default, + gld_${EMULATION_NAME}_after_parse, + gld_${EMULATION_NAME}_after_open, + after_allocation_default, + set_output_arch_default, + ldemul_default_target, + gld_${EMULATION_NAME}_before_allocation, + gld_${EMULATION_NAME}_get_script, + "${EMULATION_NAME}", + "${OUTPUT_FORMAT}", + gld_${EMULATION_NAME}_finish, + NULL, /* Create output section statements. */ + gld_${EMULATION_NAME}_open_dynamic_archive, + gld_${EMULATION_NAME}_place_orphan, + gld_${EMULATION_NAME}_set_symbols, + NULL, /* parse_args */ + gld${EMULATION_NAME}_add_options, + gld${EMULATION_NAME}_handle_option, + gld_${EMULATION_NAME}_unrecognized_file, + gld_${EMULATION_NAME}_list_options, + gld_${EMULATION_NAME}_recognized_file, + gld_${EMULATION_NAME}_find_potential_libraries, + NULL /* new_vers_pattern. */ +}; +EOF |