| 1 | # This shell script emits a C file. -*- C -*- |
| 2 | # It does some substitutions. |
| 3 | test -z "${ENTRY}" && ENTRY="_mainCRTStartup" |
| 4 | if [ -z "$MACHINE" ]; then |
| 5 | OUTPUT_ARCH=${ARCH} |
| 6 | else |
| 7 | OUTPUT_ARCH=${ARCH}:${MACHINE} |
| 8 | fi |
| 9 | rm -f e${EMULATION_NAME}.c |
| 10 | (echo;echo;echo;echo;echo)>e${EMULATION_NAME}.c # there, now line numbers match ;-) |
| 11 | cat >>e${EMULATION_NAME}.c <<EOF |
| 12 | /* Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
| 13 | 2005, 2006, 2007 Free Software Foundation, Inc. |
| 14 | |
| 15 | This file is part of the GNU Binutils. |
| 16 | |
| 17 | This program is free software; you can redistribute it and/or modify |
| 18 | it under the terms of the GNU General Public License as published by |
| 19 | the Free Software Foundation; either version 3 of the License, or |
| 20 | (at your option) any later version. |
| 21 | |
| 22 | This program is distributed in the hope that it will be useful, |
| 23 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 24 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 25 | GNU General Public License for more details. |
| 26 | |
| 27 | You should have received a copy of the GNU General Public License |
| 28 | along with this program; if not, write to the Free Software |
| 29 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 30 | MA 02110-1301, USA. */ |
| 31 | |
| 32 | |
| 33 | /* For WINDOWS_NT */ |
| 34 | /* The original file generated returned different default scripts depending |
| 35 | on whether certain switches were set, but these switches pertain to the |
| 36 | Linux system and that particular version of coff. In the NT case, we |
| 37 | only determine if the subsystem is console or windows in order to select |
| 38 | the correct entry point by default. */ |
| 39 | |
| 40 | #define TARGET_IS_${EMULATION_NAME} |
| 41 | |
| 42 | /* Do this before including bfd.h, so we prototype the right functions. */ |
| 43 | |
| 44 | #if defined(TARGET_IS_armpe) \ |
| 45 | || defined(TARGET_IS_arm_epoc_pe) \ |
| 46 | || defined(TARGET_IS_arm_wince_pe) |
| 47 | #define bfd_arm_allocate_interworking_sections \ |
| 48 | bfd_${EMULATION_NAME}_allocate_interworking_sections |
| 49 | #define bfd_arm_get_bfd_for_interworking \ |
| 50 | bfd_${EMULATION_NAME}_get_bfd_for_interworking |
| 51 | #define bfd_arm_process_before_allocation \ |
| 52 | bfd_${EMULATION_NAME}_process_before_allocation |
| 53 | #endif |
| 54 | |
| 55 | #include "sysdep.h" |
| 56 | #include "bfd.h" |
| 57 | #include "bfdlink.h" |
| 58 | #include "getopt.h" |
| 59 | #include "libiberty.h" |
| 60 | #include "ld.h" |
| 61 | #include "ldmain.h" |
| 62 | #include "ldexp.h" |
| 63 | #include "ldlang.h" |
| 64 | #include "ldfile.h" |
| 65 | #include "ldemul.h" |
| 66 | #include <ldgram.h> |
| 67 | #include "ldlex.h" |
| 68 | #include "ldmisc.h" |
| 69 | #include "ldctor.h" |
| 70 | #include "coff/internal.h" |
| 71 | |
| 72 | /* FIXME: See bfd/peXXigen.c for why we include an architecture specific |
| 73 | header in generic PE code. */ |
| 74 | #include "coff/i386.h" |
| 75 | #include "coff/pe.h" |
| 76 | |
| 77 | /* FIXME: This is a BFD internal header file, and we should not be |
| 78 | using it here. */ |
| 79 | #include "../bfd/libcoff.h" |
| 80 | |
| 81 | #include "deffile.h" |
| 82 | #include "pe-dll.h" |
| 83 | #include "safe-ctype.h" |
| 84 | |
| 85 | /* Permit the emulation parameters to override the default section |
| 86 | alignment by setting OVERRIDE_SECTION_ALIGNMENT. FIXME: This makes |
| 87 | it seem that include/coff/internal.h should not define |
| 88 | PE_DEF_SECTION_ALIGNMENT. */ |
| 89 | #if PE_DEF_SECTION_ALIGNMENT != ${OVERRIDE_SECTION_ALIGNMENT:-PE_DEF_SECTION_ALIGNMENT} |
| 90 | #undef PE_DEF_SECTION_ALIGNMENT |
| 91 | #define PE_DEF_SECTION_ALIGNMENT ${OVERRIDE_SECTION_ALIGNMENT} |
| 92 | #endif |
| 93 | |
| 94 | #if defined(TARGET_IS_i386pe) \ |
| 95 | || defined(TARGET_IS_shpe) \ |
| 96 | || defined(TARGET_IS_mipspe) \ |
| 97 | || defined(TARGET_IS_armpe) \ |
| 98 | || defined(TARGET_IS_arm_epoc_pe) \ |
| 99 | || defined(TARGET_IS_arm_wince_pe) |
| 100 | #define DLL_SUPPORT |
| 101 | #endif |
| 102 | |
| 103 | #if defined(TARGET_IS_i386pe) || ! defined(DLL_SUPPORT) |
| 104 | #define PE_DEF_SUBSYSTEM 3 |
| 105 | #else |
| 106 | #undef NT_EXE_IMAGE_BASE |
| 107 | #undef PE_DEF_SECTION_ALIGNMENT |
| 108 | #undef PE_DEF_FILE_ALIGNMENT |
| 109 | #define NT_EXE_IMAGE_BASE 0x00010000 |
| 110 | |
| 111 | #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe) |
| 112 | #define PE_DEF_SECTION_ALIGNMENT 0x00001000 |
| 113 | #define PE_DEF_SUBSYSTEM 9 |
| 114 | #else |
| 115 | #define PE_DEF_SECTION_ALIGNMENT 0x00000400 |
| 116 | #define PE_DEF_SUBSYSTEM 2 |
| 117 | #endif |
| 118 | #define PE_DEF_FILE_ALIGNMENT 0x00000200 |
| 119 | #endif |
| 120 | |
| 121 | #define U(S) ${INITIAL_SYMBOL_CHAR} S |
| 122 | |
| 123 | static struct internal_extra_pe_aouthdr pe; |
| 124 | static int dll; |
| 125 | static flagword real_flags = 0; |
| 126 | static int support_old_code = 0; |
| 127 | static char * thumb_entry_symbol = NULL; |
| 128 | static lang_assignment_statement_type *image_base_statement = 0; |
| 129 | |
| 130 | #ifdef DLL_SUPPORT |
| 131 | static int pe_enable_stdcall_fixup = -1; /* 0=disable 1=enable. */ |
| 132 | static char *pe_out_def_filename = NULL; |
| 133 | static char *pe_implib_filename = NULL; |
| 134 | static int pe_enable_auto_image_base = 0; |
| 135 | static char *pe_dll_search_prefix = NULL; |
| 136 | #endif |
| 137 | |
| 138 | extern const char *output_filename; |
| 139 | |
| 140 | static void |
| 141 | gld_${EMULATION_NAME}_before_parse (void) |
| 142 | { |
| 143 | ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`); |
| 144 | output_filename = "${EXECUTABLE_NAME:-a.exe}"; |
| 145 | #ifdef DLL_SUPPORT |
| 146 | config.dynamic_link = TRUE; |
| 147 | config.has_shared = 1; |
| 148 | link_info.pei386_auto_import = -1; |
| 149 | link_info.pei386_runtime_pseudo_reloc = -1; |
| 150 | |
| 151 | #if (PE_DEF_SUBSYSTEM == 9) || (PE_DEF_SUBSYSTEM == 2) |
| 152 | #if defined TARGET_IS_mipspe || defined TARGET_IS_armpe || defined TARGET_IS_arm_wince_pe |
| 153 | lang_default_entry ("WinMainCRTStartup"); |
| 154 | #else |
| 155 | lang_default_entry ("_WinMainCRTStartup"); |
| 156 | #endif |
| 157 | #else |
| 158 | lang_default_entry ("${ENTRY}"); |
| 159 | #endif |
| 160 | #endif |
| 161 | } |
| 162 | \f |
| 163 | /* PE format extra command line options. */ |
| 164 | |
| 165 | /* Used for setting flags in the PE header. */ |
| 166 | #define OPTION_BASE_FILE (300 + 1) |
| 167 | #define OPTION_DLL (OPTION_BASE_FILE + 1) |
| 168 | #define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1) |
| 169 | #define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1) |
| 170 | #define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1) |
| 171 | #define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1) |
| 172 | #define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1) |
| 173 | #define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1) |
| 174 | #define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1) |
| 175 | #define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1) |
| 176 | #define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1) |
| 177 | #define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1) |
| 178 | #define OPTION_SUBSYSTEM (OPTION_STACK + 1) |
| 179 | #define OPTION_HEAP (OPTION_SUBSYSTEM + 1) |
| 180 | #define OPTION_SUPPORT_OLD_CODE (OPTION_HEAP + 1) |
| 181 | #define OPTION_OUT_DEF (OPTION_SUPPORT_OLD_CODE + 1) |
| 182 | #define OPTION_EXPORT_ALL (OPTION_OUT_DEF + 1) |
| 183 | #define OPTION_EXCLUDE_SYMBOLS (OPTION_EXPORT_ALL + 1) |
| 184 | #define OPTION_KILL_ATS (OPTION_EXCLUDE_SYMBOLS + 1) |
| 185 | #define OPTION_STDCALL_ALIASES (OPTION_KILL_ATS + 1) |
| 186 | #define OPTION_ENABLE_STDCALL_FIXUP (OPTION_STDCALL_ALIASES + 1) |
| 187 | #define OPTION_DISABLE_STDCALL_FIXUP (OPTION_ENABLE_STDCALL_FIXUP + 1) |
| 188 | #define OPTION_IMPLIB_FILENAME (OPTION_DISABLE_STDCALL_FIXUP + 1) |
| 189 | #define OPTION_THUMB_ENTRY (OPTION_IMPLIB_FILENAME + 1) |
| 190 | #define OPTION_WARN_DUPLICATE_EXPORTS (OPTION_THUMB_ENTRY + 1) |
| 191 | #define OPTION_IMP_COMPAT (OPTION_WARN_DUPLICATE_EXPORTS + 1) |
| 192 | #define OPTION_ENABLE_AUTO_IMAGE_BASE (OPTION_IMP_COMPAT + 1) |
| 193 | #define OPTION_DISABLE_AUTO_IMAGE_BASE (OPTION_ENABLE_AUTO_IMAGE_BASE + 1) |
| 194 | #define OPTION_DLL_SEARCH_PREFIX (OPTION_DISABLE_AUTO_IMAGE_BASE + 1) |
| 195 | #define OPTION_NO_DEFAULT_EXCLUDES (OPTION_DLL_SEARCH_PREFIX + 1) |
| 196 | #define OPTION_DLL_ENABLE_AUTO_IMPORT (OPTION_NO_DEFAULT_EXCLUDES + 1) |
| 197 | #define OPTION_DLL_DISABLE_AUTO_IMPORT (OPTION_DLL_ENABLE_AUTO_IMPORT + 1) |
| 198 | #define OPTION_ENABLE_EXTRA_PE_DEBUG (OPTION_DLL_DISABLE_AUTO_IMPORT + 1) |
| 199 | #define OPTION_EXCLUDE_LIBS (OPTION_ENABLE_EXTRA_PE_DEBUG + 1) |
| 200 | #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC \ |
| 201 | (OPTION_EXCLUDE_LIBS + 1) |
| 202 | #define OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC \ |
| 203 | (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC + 1) |
| 204 | #define OPTION_LARGE_ADDRESS_AWARE \ |
| 205 | (OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC + 1) |
| 206 | |
| 207 | static void |
| 208 | gld${EMULATION_NAME}_add_options |
| 209 | (int ns ATTRIBUTE_UNUSED, char **shortopts ATTRIBUTE_UNUSED, int nl, |
| 210 | struct option **longopts, int nrl ATTRIBUTE_UNUSED, |
| 211 | struct option **really_longopts ATTRIBUTE_UNUSED) |
| 212 | { |
| 213 | static const struct option xtra_long[] = { |
| 214 | /* PE options */ |
| 215 | {"base-file", required_argument, NULL, OPTION_BASE_FILE}, |
| 216 | {"dll", no_argument, NULL, OPTION_DLL}, |
| 217 | {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT}, |
| 218 | {"heap", required_argument, NULL, OPTION_HEAP}, |
| 219 | {"image-base", required_argument, NULL, OPTION_IMAGE_BASE}, |
| 220 | {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION}, |
| 221 | {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION}, |
| 222 | {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION}, |
| 223 | {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION}, |
| 224 | {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION}, |
| 225 | {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION}, |
| 226 | {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT}, |
| 227 | {"stack", required_argument, NULL, OPTION_STACK}, |
| 228 | {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM}, |
| 229 | {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE}, |
| 230 | {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY}, |
| 231 | #ifdef DLL_SUPPORT |
| 232 | /* getopt allows abbreviations, so we do this to stop it from treating -o |
| 233 | as an abbreviation for this option */ |
| 234 | {"output-def", required_argument, NULL, OPTION_OUT_DEF}, |
| 235 | {"output-def", required_argument, NULL, OPTION_OUT_DEF}, |
| 236 | {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL}, |
| 237 | {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS}, |
| 238 | {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS}, |
| 239 | {"kill-at", no_argument, NULL, OPTION_KILL_ATS}, |
| 240 | {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES}, |
| 241 | {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP}, |
| 242 | {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP}, |
| 243 | {"out-implib", required_argument, NULL, OPTION_IMPLIB_FILENAME}, |
| 244 | {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS}, |
| 245 | /* getopt() allows abbreviations, so we do this to stop it from |
| 246 | treating -c as an abbreviation for these --compat-implib. */ |
| 247 | {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT}, |
| 248 | {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT}, |
| 249 | {"enable-auto-image-base", no_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE}, |
| 250 | {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE}, |
| 251 | {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX}, |
| 252 | {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES}, |
| 253 | {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT}, |
| 254 | {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT}, |
| 255 | {"enable-extra-pe-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG}, |
| 256 | {"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC}, |
| 257 | {"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC}, |
| 258 | #endif |
| 259 | {"large-address-aware", no_argument, NULL, OPTION_LARGE_ADDRESS_AWARE}, |
| 260 | {NULL, no_argument, NULL, 0} |
| 261 | }; |
| 262 | |
| 263 | *longopts = (struct option *) |
| 264 | xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long)); |
| 265 | memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long)); |
| 266 | } |
| 267 | |
| 268 | /* PE/WIN32; added routines to get the subsystem type, heap and/or stack |
| 269 | parameters which may be input from the command line. */ |
| 270 | |
| 271 | typedef struct |
| 272 | { |
| 273 | void *ptr; |
| 274 | int size; |
| 275 | int value; |
| 276 | char *symbol; |
| 277 | int inited; |
| 278 | } definfo; |
| 279 | |
| 280 | #define D(field,symbol,def) {&pe.field,sizeof(pe.field), def, symbol,0} |
| 281 | |
| 282 | static definfo init[] = |
| 283 | { |
| 284 | /* imagebase must be first */ |
| 285 | #define IMAGEBASEOFF 0 |
| 286 | D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE), |
| 287 | #define DLLOFF 1 |
| 288 | {&dll, sizeof(dll), 0, "__dll__", 0}, |
| 289 | D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT), |
| 290 | D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT), |
| 291 | D(MajorOperatingSystemVersion,"__major_os_version__", 4), |
| 292 | D(MinorOperatingSystemVersion,"__minor_os_version__", 0), |
| 293 | D(MajorImageVersion,"__major_image_version__", 1), |
| 294 | D(MinorImageVersion,"__minor_image_version__", 0), |
| 295 | #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe) |
| 296 | D(MajorSubsystemVersion,"__major_subsystem_version__", 3), |
| 297 | #else |
| 298 | D(MajorSubsystemVersion,"__major_subsystem_version__", 4), |
| 299 | #endif |
| 300 | D(MinorSubsystemVersion,"__minor_subsystem_version__", 0), |
| 301 | D(Subsystem,"__subsystem__", ${SUBSYSTEM}), |
| 302 | D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000), |
| 303 | D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000), |
| 304 | D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000), |
| 305 | D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000), |
| 306 | D(LoaderFlags,"__loader_flags__", 0x0), |
| 307 | { NULL, 0, 0, NULL, 0 } |
| 308 | }; |
| 309 | |
| 310 | |
| 311 | static void |
| 312 | gld_${EMULATION_NAME}_list_options (FILE *file) |
| 313 | { |
| 314 | fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n")); |
| 315 | fprintf (file, _(" --dll Set image base to the default for DLLs\n")); |
| 316 | fprintf (file, _(" --file-alignment <size> Set file alignment\n")); |
| 317 | fprintf (file, _(" --heap <size> Set initial size of the heap\n")); |
| 318 | fprintf (file, _(" --image-base <address> Set start address of the executable\n")); |
| 319 | fprintf (file, _(" --major-image-version <number> Set version number of the executable\n")); |
| 320 | fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n")); |
| 321 | fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n")); |
| 322 | fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n")); |
| 323 | fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n")); |
| 324 | fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n")); |
| 325 | fprintf (file, _(" --section-alignment <size> Set section alignment\n")); |
| 326 | fprintf (file, _(" --stack <size> Set size of the initial stack\n")); |
| 327 | fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n")); |
| 328 | fprintf (file, _(" --support-old-code Support interworking with old code\n")); |
| 329 | fprintf (file, _(" --thumb-entry=<symbol> Set the entry point to be Thumb <symbol>\n")); |
| 330 | #ifdef DLL_SUPPORT |
| 331 | fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n")); |
| 332 | fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n")); |
| 333 | fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n")); |
| 334 | fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n")); |
| 335 | fprintf (file, _(" --exclude-libs lib,lib,... Exclude libraries from automatic export\n")); |
| 336 | fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n")); |
| 337 | fprintf (file, _(" --kill-at Remove @nn from exported symbols\n")); |
| 338 | fprintf (file, _(" --out-implib <file> Generate import library\n")); |
| 339 | fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n")); |
| 340 | fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports.\n")); |
| 341 | fprintf (file, _(" --compat-implib Create backward compatible import libs;\n\ |
| 342 | create __imp_<SYMBOL> as well.\n")); |
| 343 | fprintf (file, _(" --enable-auto-image-base Automatically choose image base for DLLs\n\ |
| 344 | unless user specifies one\n")); |
| 345 | fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n")); |
| 346 | fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll without\n\ |
| 347 | an importlib, use <string><basename>.dll\n\ |
| 348 | in preference to lib<basename>.dll \n")); |
| 349 | fprintf (file, _(" --enable-auto-import Do sophistcated linking of _sym to\n\ |
| 350 | __imp_sym for DATA references\n")); |
| 351 | fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n")); |
| 352 | fprintf (file, _(" --enable-runtime-pseudo-reloc Work around auto-import limitations by\n\ |
| 353 | adding pseudo-relocations resolved at\n\ |
| 354 | runtime.\n")); |
| 355 | fprintf (file, _(" --disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for\n\ |
| 356 | auto-imported DATA.\n")); |
| 357 | fprintf (file, _(" --enable-extra-pe-debug Enable verbose debug output when building\n\ |
| 358 | or linking to DLLs (esp. auto-import)\n")); |
| 359 | #endif |
| 360 | fprintf (file, _(" --large-address-aware Executable supports virtual addresses\n\ |
| 361 | greater than 2 gigabytes\n")); |
| 362 | } |
| 363 | |
| 364 | |
| 365 | static void |
| 366 | set_pe_name (char *name, long val) |
| 367 | { |
| 368 | int i; |
| 369 | |
| 370 | /* Find the name and set it. */ |
| 371 | for (i = 0; init[i].ptr; i++) |
| 372 | { |
| 373 | if (strcmp (name, init[i].symbol) == 0) |
| 374 | { |
| 375 | init[i].value = val; |
| 376 | init[i].inited = 1; |
| 377 | return; |
| 378 | } |
| 379 | } |
| 380 | abort (); |
| 381 | } |
| 382 | |
| 383 | |
| 384 | static void |
| 385 | set_pe_subsystem (void) |
| 386 | { |
| 387 | const char *sver; |
| 388 | const char *entry; |
| 389 | const char *initial_symbol_char; |
| 390 | char *end; |
| 391 | int len; |
| 392 | int i; |
| 393 | int subsystem; |
| 394 | unsigned long temp_subsystem; |
| 395 | static const struct |
| 396 | { |
| 397 | const char *name; |
| 398 | const int value; |
| 399 | const char *entry; |
| 400 | } |
| 401 | v[] = |
| 402 | { |
| 403 | { "native", 1, "NtProcessStartup" }, |
| 404 | { "windows", 2, "WinMainCRTStartup" }, |
| 405 | { "console", 3, "mainCRTStartup" }, |
| 406 | { "posix", 7, "__PosixProcessStartup"}, |
| 407 | { "wince", 9, "WinMainCRTStartup" }, |
| 408 | { "xbox", 14, "mainCRTStartup" }, |
| 409 | { NULL, 0, NULL } |
| 410 | }; |
| 411 | /* Entry point name for arbitrary subsystem numbers. */ |
| 412 | static const char default_entry[] = "mainCRTStartup"; |
| 413 | |
| 414 | /* Check for the presence of a version number. */ |
| 415 | sver = strchr (optarg, ':'); |
| 416 | if (sver == NULL) |
| 417 | len = strlen (optarg); |
| 418 | else |
| 419 | { |
| 420 | len = sver - optarg; |
| 421 | set_pe_name ("__major_subsystem_version__", |
| 422 | strtoul (sver + 1, &end, 0)); |
| 423 | if (*end == '.') |
| 424 | set_pe_name ("__minor_subsystem_version__", |
| 425 | strtoul (end + 1, &end, 0)); |
| 426 | if (*end != '\0') |
| 427 | einfo (_("%P: warning: bad version number in -subsystem option\n")); |
| 428 | } |
| 429 | |
| 430 | /* Check for numeric subsystem. */ |
| 431 | temp_subsystem = strtoul (optarg, & end, 0); |
| 432 | if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536)) |
| 433 | { |
| 434 | /* Search list for a numeric match to use its entry point. */ |
| 435 | for (i = 0; v[i].name; i++) |
| 436 | if (v[i].value == (int) temp_subsystem) |
| 437 | break; |
| 438 | |
| 439 | /* If no match, use the default. */ |
| 440 | if (v[i].name != NULL) |
| 441 | entry = v[i].entry; |
| 442 | else |
| 443 | entry = default_entry; |
| 444 | |
| 445 | /* Use this subsystem. */ |
| 446 | subsystem = (int) temp_subsystem; |
| 447 | } |
| 448 | else |
| 449 | { |
| 450 | /* Search for subsystem by name. */ |
| 451 | for (i = 0; v[i].name; i++) |
| 452 | if (strncmp (optarg, v[i].name, len) == 0 |
| 453 | && v[i].name[len] == '\0') |
| 454 | break; |
| 455 | |
| 456 | if (v[i].name == NULL) |
| 457 | { |
| 458 | einfo (_("%P%F: invalid subsystem type %s\n"), optarg); |
| 459 | return; |
| 460 | } |
| 461 | |
| 462 | entry = v[i].entry; |
| 463 | subsystem = v[i].value; |
| 464 | } |
| 465 | |
| 466 | set_pe_name ("__subsystem__", subsystem); |
| 467 | |
| 468 | initial_symbol_char = ${INITIAL_SYMBOL_CHAR}; |
| 469 | if (*initial_symbol_char != '\0') |
| 470 | { |
| 471 | char *alc_entry; |
| 472 | |
| 473 | /* lang_default_entry expects its argument to be permanently |
| 474 | allocated, so we don't free this string. */ |
| 475 | alc_entry = xmalloc (strlen (initial_symbol_char) |
| 476 | + strlen (entry) |
| 477 | + 1); |
| 478 | strcpy (alc_entry, initial_symbol_char); |
| 479 | strcat (alc_entry, entry); |
| 480 | entry = alc_entry; |
| 481 | } |
| 482 | |
| 483 | lang_default_entry (entry); |
| 484 | |
| 485 | return; |
| 486 | } |
| 487 | |
| 488 | |
| 489 | static void |
| 490 | set_pe_value (char *name) |
| 491 | { |
| 492 | char *end; |
| 493 | |
| 494 | set_pe_name (name, strtoul (optarg, &end, 0)); |
| 495 | |
| 496 | if (end == optarg) |
| 497 | einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg); |
| 498 | |
| 499 | optarg = end; |
| 500 | } |
| 501 | |
| 502 | |
| 503 | static void |
| 504 | set_pe_stack_heap (char *resname, char *comname) |
| 505 | { |
| 506 | set_pe_value (resname); |
| 507 | |
| 508 | if (*optarg == ',') |
| 509 | { |
| 510 | optarg++; |
| 511 | set_pe_value (comname); |
| 512 | } |
| 513 | else if (*optarg) |
| 514 | einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg); |
| 515 | } |
| 516 | |
| 517 | |
| 518 | static bfd_boolean |
| 519 | gld${EMULATION_NAME}_handle_option (int optc) |
| 520 | { |
| 521 | switch (optc) |
| 522 | { |
| 523 | default: |
| 524 | return FALSE; |
| 525 | |
| 526 | case OPTION_BASE_FILE: |
| 527 | link_info.base_file = fopen (optarg, FOPEN_WB); |
| 528 | if (link_info.base_file == NULL) |
| 529 | { |
| 530 | /* xgettext:c-format */ |
| 531 | fprintf (stderr, _("%s: Can't open base file %s\n"), |
| 532 | program_name, optarg); |
| 533 | xexit (1); |
| 534 | } |
| 535 | break; |
| 536 | |
| 537 | /* PE options. */ |
| 538 | case OPTION_HEAP: |
| 539 | set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__"); |
| 540 | break; |
| 541 | case OPTION_STACK: |
| 542 | set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__"); |
| 543 | break; |
| 544 | case OPTION_SUBSYSTEM: |
| 545 | set_pe_subsystem (); |
| 546 | break; |
| 547 | case OPTION_MAJOR_OS_VERSION: |
| 548 | set_pe_value ("__major_os_version__"); |
| 549 | break; |
| 550 | case OPTION_MINOR_OS_VERSION: |
| 551 | set_pe_value ("__minor_os_version__"); |
| 552 | break; |
| 553 | case OPTION_MAJOR_SUBSYSTEM_VERSION: |
| 554 | set_pe_value ("__major_subsystem_version__"); |
| 555 | break; |
| 556 | case OPTION_MINOR_SUBSYSTEM_VERSION: |
| 557 | set_pe_value ("__minor_subsystem_version__"); |
| 558 | break; |
| 559 | case OPTION_MAJOR_IMAGE_VERSION: |
| 560 | set_pe_value ("__major_image_version__"); |
| 561 | break; |
| 562 | case OPTION_MINOR_IMAGE_VERSION: |
| 563 | set_pe_value ("__minor_image_version__"); |
| 564 | break; |
| 565 | case OPTION_FILE_ALIGNMENT: |
| 566 | set_pe_value ("__file_alignment__"); |
| 567 | break; |
| 568 | case OPTION_SECTION_ALIGNMENT: |
| 569 | set_pe_value ("__section_alignment__"); |
| 570 | break; |
| 571 | case OPTION_DLL: |
| 572 | set_pe_name ("__dll__", 1); |
| 573 | break; |
| 574 | case OPTION_IMAGE_BASE: |
| 575 | set_pe_value ("__image_base__"); |
| 576 | break; |
| 577 | case OPTION_SUPPORT_OLD_CODE: |
| 578 | support_old_code = 1; |
| 579 | break; |
| 580 | case OPTION_THUMB_ENTRY: |
| 581 | thumb_entry_symbol = optarg; |
| 582 | break; |
| 583 | #ifdef DLL_SUPPORT |
| 584 | case OPTION_OUT_DEF: |
| 585 | pe_out_def_filename = xstrdup (optarg); |
| 586 | break; |
| 587 | case OPTION_EXPORT_ALL: |
| 588 | pe_dll_export_everything = 1; |
| 589 | break; |
| 590 | case OPTION_EXCLUDE_SYMBOLS: |
| 591 | pe_dll_add_excludes (optarg, 0); |
| 592 | break; |
| 593 | case OPTION_EXCLUDE_LIBS: |
| 594 | pe_dll_add_excludes (optarg, 1); |
| 595 | break; |
| 596 | case OPTION_KILL_ATS: |
| 597 | pe_dll_kill_ats = 1; |
| 598 | break; |
| 599 | case OPTION_STDCALL_ALIASES: |
| 600 | pe_dll_stdcall_aliases = 1; |
| 601 | break; |
| 602 | case OPTION_ENABLE_STDCALL_FIXUP: |
| 603 | pe_enable_stdcall_fixup = 1; |
| 604 | break; |
| 605 | case OPTION_DISABLE_STDCALL_FIXUP: |
| 606 | pe_enable_stdcall_fixup = 0; |
| 607 | break; |
| 608 | case OPTION_IMPLIB_FILENAME: |
| 609 | pe_implib_filename = xstrdup (optarg); |
| 610 | break; |
| 611 | case OPTION_WARN_DUPLICATE_EXPORTS: |
| 612 | pe_dll_warn_dup_exports = 1; |
| 613 | break; |
| 614 | case OPTION_IMP_COMPAT: |
| 615 | pe_dll_compat_implib = 1; |
| 616 | break; |
| 617 | case OPTION_ENABLE_AUTO_IMAGE_BASE: |
| 618 | pe_enable_auto_image_base = 1; |
| 619 | break; |
| 620 | case OPTION_DISABLE_AUTO_IMAGE_BASE: |
| 621 | pe_enable_auto_image_base = 0; |
| 622 | break; |
| 623 | case OPTION_DLL_SEARCH_PREFIX: |
| 624 | pe_dll_search_prefix = xstrdup (optarg); |
| 625 | break; |
| 626 | case OPTION_NO_DEFAULT_EXCLUDES: |
| 627 | pe_dll_do_default_excludes = 0; |
| 628 | break; |
| 629 | case OPTION_DLL_ENABLE_AUTO_IMPORT: |
| 630 | link_info.pei386_auto_import = 1; |
| 631 | break; |
| 632 | case OPTION_DLL_DISABLE_AUTO_IMPORT: |
| 633 | link_info.pei386_auto_import = 0; |
| 634 | break; |
| 635 | case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC: |
| 636 | link_info.pei386_runtime_pseudo_reloc = 1; |
| 637 | break; |
| 638 | case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC: |
| 639 | link_info.pei386_runtime_pseudo_reloc = 0; |
| 640 | break; |
| 641 | case OPTION_ENABLE_EXTRA_PE_DEBUG: |
| 642 | pe_dll_extra_pe_debug = 1; |
| 643 | break; |
| 644 | #endif |
| 645 | case OPTION_LARGE_ADDRESS_AWARE: |
| 646 | real_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE; |
| 647 | break; |
| 648 | } |
| 649 | return TRUE; |
| 650 | } |
| 651 | \f |
| 652 | |
| 653 | #ifdef DLL_SUPPORT |
| 654 | static unsigned long |
| 655 | strhash (const char *str) |
| 656 | { |
| 657 | const unsigned char *s; |
| 658 | unsigned long hash; |
| 659 | unsigned int c; |
| 660 | unsigned int len; |
| 661 | |
| 662 | hash = 0; |
| 663 | len = 0; |
| 664 | s = (const unsigned char *) str; |
| 665 | while ((c = *s++) != '\0') |
| 666 | { |
| 667 | hash += c + (c << 17); |
| 668 | hash ^= hash >> 2; |
| 669 | ++len; |
| 670 | } |
| 671 | hash += len + (len << 17); |
| 672 | hash ^= hash >> 2; |
| 673 | |
| 674 | return hash; |
| 675 | } |
| 676 | |
| 677 | /* Use the output file to create a image base for relocatable DLLs. */ |
| 678 | |
| 679 | static unsigned long |
| 680 | compute_dll_image_base (const char *ofile) |
| 681 | { |
| 682 | unsigned long hash = strhash (ofile); |
| 683 | return 0x61300000 + ((hash << 16) & 0x0FFC0000); |
| 684 | } |
| 685 | #endif |
| 686 | |
| 687 | /* Assign values to the special symbols before the linker script is |
| 688 | read. */ |
| 689 | |
| 690 | static void |
| 691 | gld_${EMULATION_NAME}_set_symbols (void) |
| 692 | { |
| 693 | /* Run through and invent symbols for all the |
| 694 | names and insert the defaults. */ |
| 695 | int j; |
| 696 | lang_statement_list_type *save; |
| 697 | |
| 698 | if (!init[IMAGEBASEOFF].inited) |
| 699 | { |
| 700 | if (link_info.relocatable) |
| 701 | init[IMAGEBASEOFF].value = 0; |
| 702 | else if (init[DLLOFF].value || (link_info.shared && !link_info.pie)) |
| 703 | #ifdef DLL_SUPPORT |
| 704 | init[IMAGEBASEOFF].value = (pe_enable_auto_image_base) ? |
| 705 | compute_dll_image_base (output_filename) : NT_DLL_IMAGE_BASE; |
| 706 | #else |
| 707 | init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE; |
| 708 | #endif |
| 709 | else |
| 710 | init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE; |
| 711 | } |
| 712 | |
| 713 | /* Don't do any symbol assignments if this is a relocatable link. */ |
| 714 | if (link_info.relocatable) |
| 715 | return; |
| 716 | |
| 717 | /* Glue the assignments into the abs section. */ |
| 718 | save = stat_ptr; |
| 719 | |
| 720 | stat_ptr = &(abs_output_section->children); |
| 721 | |
| 722 | for (j = 0; init[j].ptr; j++) |
| 723 | { |
| 724 | long val = init[j].value; |
| 725 | lang_assignment_statement_type *rv; |
| 726 | rv = lang_add_assignment (exp_assop ('=', init[j].symbol, |
| 727 | exp_intop (val))); |
| 728 | if (init[j].size == sizeof (short)) |
| 729 | *(short *) init[j].ptr = val; |
| 730 | else if (init[j].size == sizeof (int)) |
| 731 | *(int *) init[j].ptr = val; |
| 732 | else if (init[j].size == sizeof (long)) |
| 733 | *(long *) init[j].ptr = val; |
| 734 | /* This might be a long long or other special type. */ |
| 735 | else if (init[j].size == sizeof (bfd_vma)) |
| 736 | *(bfd_vma *) init[j].ptr = val; |
| 737 | else abort (); |
| 738 | if (j == IMAGEBASEOFF) |
| 739 | image_base_statement = rv; |
| 740 | } |
| 741 | /* Restore the pointer. */ |
| 742 | stat_ptr = save; |
| 743 | |
| 744 | if (pe.FileAlignment > |
| 745 | pe.SectionAlignment) |
| 746 | { |
| 747 | einfo (_("%P: warning, file alignment > section alignment.\n")); |
| 748 | } |
| 749 | } |
| 750 | |
| 751 | /* This is called after the linker script and the command line options |
| 752 | have been read. */ |
| 753 | |
| 754 | static void |
| 755 | gld_${EMULATION_NAME}_after_parse (void) |
| 756 | { |
| 757 | /* The Windows libraries are designed for the linker to treat the |
| 758 | entry point as an undefined symbol. Otherwise, the .obj that |
| 759 | defines mainCRTStartup is brought in because it is the first |
| 760 | encountered in libc.lib and it has other symbols in it which will |
| 761 | be pulled in by the link process. To avoid this, we act as |
| 762 | though the user specified -u with the entry point symbol. |
| 763 | |
| 764 | This function is called after the linker script and command line |
| 765 | options have been read, so at this point we know the right entry |
| 766 | point. This function is called before the input files are |
| 767 | opened, so registering the symbol as undefined will make a |
| 768 | difference. */ |
| 769 | |
| 770 | if (! link_info.relocatable && entry_symbol.name != NULL) |
| 771 | ldlang_add_undef (entry_symbol.name); |
| 772 | } |
| 773 | |
| 774 | /* pe-dll.c directly accesses pe_data_import_dll, |
| 775 | so it must be defined outside of #ifdef DLL_SUPPORT. |
| 776 | Note - this variable is deliberately not initialised. |
| 777 | This allows it to be treated as a common varaible, and only |
| 778 | exist in one incarnation in a multiple target enabled linker. */ |
| 779 | char * pe_data_import_dll; |
| 780 | |
| 781 | #ifdef DLL_SUPPORT |
| 782 | static struct bfd_link_hash_entry *pe_undef_found_sym; |
| 783 | |
| 784 | static bfd_boolean |
| 785 | pe_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf) |
| 786 | { |
| 787 | int sl; |
| 788 | char *string = inf; |
| 789 | |
| 790 | sl = strlen (string); |
| 791 | if (h->type == bfd_link_hash_defined |
| 792 | && strncmp (h->root.string, string, sl) == 0 |
| 793 | && h->root.string[sl] == '@') |
| 794 | { |
| 795 | pe_undef_found_sym = h; |
| 796 | return FALSE; |
| 797 | } |
| 798 | return TRUE; |
| 799 | } |
| 800 | |
| 801 | static void |
| 802 | pe_fixup_stdcalls (void) |
| 803 | { |
| 804 | static int gave_warning_message = 0; |
| 805 | struct bfd_link_hash_entry *undef, *sym; |
| 806 | |
| 807 | if (pe_dll_extra_pe_debug) |
| 808 | printf ("%s\n", __FUNCTION__); |
| 809 | |
| 810 | for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next) |
| 811 | if (undef->type == bfd_link_hash_undefined) |
| 812 | { |
| 813 | char* at = strchr (undef->root.string, '@'); |
| 814 | int lead_at = (*undef->root.string == '@'); |
| 815 | /* For now, don't try to fixup fastcall symbols. */ |
| 816 | |
| 817 | if (at && !lead_at) |
| 818 | { |
| 819 | /* The symbol is a stdcall symbol, so let's look for a |
| 820 | cdecl symbol with the same name and resolve to that. */ |
| 821 | char *cname = xstrdup (undef->root.string /* + lead_at */); |
| 822 | at = strchr (cname, '@'); |
| 823 | *at = 0; |
| 824 | sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1); |
| 825 | |
| 826 | if (sym && sym->type == bfd_link_hash_defined) |
| 827 | { |
| 828 | undef->type = bfd_link_hash_defined; |
| 829 | undef->u.def.value = sym->u.def.value; |
| 830 | undef->u.def.section = sym->u.def.section; |
| 831 | |
| 832 | if (pe_enable_stdcall_fixup == -1) |
| 833 | { |
| 834 | einfo (_("Warning: resolving %s by linking to %s\n"), |
| 835 | undef->root.string, cname); |
| 836 | if (! gave_warning_message) |
| 837 | { |
| 838 | gave_warning_message = 1; |
| 839 | einfo (_("Use --enable-stdcall-fixup to disable these warnings\n")); |
| 840 | einfo (_("Use --disable-stdcall-fixup to disable these fixups\n")); |
| 841 | } |
| 842 | } |
| 843 | } |
| 844 | } |
| 845 | else |
| 846 | { |
| 847 | /* The symbol is a cdecl symbol, so we look for stdcall |
| 848 | symbols - which means scanning the whole symbol table. */ |
| 849 | pe_undef_found_sym = 0; |
| 850 | bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match, |
| 851 | (char *) undef->root.string); |
| 852 | sym = pe_undef_found_sym; |
| 853 | if (sym) |
| 854 | { |
| 855 | undef->type = bfd_link_hash_defined; |
| 856 | undef->u.def.value = sym->u.def.value; |
| 857 | undef->u.def.section = sym->u.def.section; |
| 858 | |
| 859 | if (pe_enable_stdcall_fixup == -1) |
| 860 | { |
| 861 | einfo (_("Warning: resolving %s by linking to %s\n"), |
| 862 | undef->root.string, sym->root.string); |
| 863 | if (! gave_warning_message) |
| 864 | { |
| 865 | gave_warning_message = 1; |
| 866 | einfo (_("Use --enable-stdcall-fixup to disable these warnings\n")); |
| 867 | einfo (_("Use --disable-stdcall-fixup to disable these fixups\n")); |
| 868 | } |
| 869 | } |
| 870 | } |
| 871 | } |
| 872 | } |
| 873 | } |
| 874 | |
| 875 | static int |
| 876 | make_import_fixup (arelent *rel, asection *s) |
| 877 | { |
| 878 | struct bfd_symbol *sym = *rel->sym_ptr_ptr; |
| 879 | char addend[4]; |
| 880 | |
| 881 | if (pe_dll_extra_pe_debug) |
| 882 | printf ("arelent: %s@%#lx: add=%li\n", sym->name, |
| 883 | (long) rel->address, (long) rel->addend); |
| 884 | |
| 885 | if (! bfd_get_section_contents (s->owner, s, addend, rel->address, sizeof (addend))) |
| 886 | einfo (_("%C: Cannot get section contents - auto-import exception\n"), |
| 887 | s->owner, s, rel->address); |
| 888 | |
| 889 | pe_create_import_fixup (rel, s, bfd_get_32 (s->owner, addend)); |
| 890 | |
| 891 | return 1; |
| 892 | } |
| 893 | |
| 894 | static void |
| 895 | pe_find_data_imports (void) |
| 896 | { |
| 897 | struct bfd_link_hash_entry *undef, *sym; |
| 898 | |
| 899 | if (link_info.pei386_auto_import == 0) |
| 900 | return; |
| 901 | |
| 902 | for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next) |
| 903 | { |
| 904 | if (undef->type == bfd_link_hash_undefined) |
| 905 | { |
| 906 | /* C++ symbols are *long*. */ |
| 907 | char buf[4096]; |
| 908 | |
| 909 | if (pe_dll_extra_pe_debug) |
| 910 | printf ("%s:%s\n", __FUNCTION__, undef->root.string); |
| 911 | |
| 912 | sprintf (buf, "__imp_%s", undef->root.string); |
| 913 | |
| 914 | sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1); |
| 915 | |
| 916 | if (sym && sym->type == bfd_link_hash_defined) |
| 917 | { |
| 918 | bfd *b = sym->u.def.section->owner; |
| 919 | asymbol **symbols; |
| 920 | int nsyms, symsize, i; |
| 921 | |
| 922 | if (link_info.pei386_auto_import == -1) |
| 923 | info_msg (_("Info: resolving %s by linking to %s (auto-import)\n"), |
| 924 | undef->root.string, buf); |
| 925 | |
| 926 | symsize = bfd_get_symtab_upper_bound (b); |
| 927 | symbols = (asymbol **) xmalloc (symsize); |
| 928 | nsyms = bfd_canonicalize_symtab (b, symbols); |
| 929 | |
| 930 | for (i = 0; i < nsyms; i++) |
| 931 | { |
| 932 | if (! CONST_STRNEQ (symbols[i]->name, U ("_head_"))) |
| 933 | continue; |
| 934 | |
| 935 | if (pe_dll_extra_pe_debug) |
| 936 | printf ("->%s\n", symbols[i]->name); |
| 937 | |
| 938 | pe_data_import_dll = (char*) (symbols[i]->name + |
| 939 | sizeof (U ("_head_")) - 1); |
| 940 | break; |
| 941 | } |
| 942 | |
| 943 | pe_walk_relocs_of_symbol (&link_info, undef->root.string, |
| 944 | make_import_fixup); |
| 945 | |
| 946 | /* Let's differentiate it somehow from defined. */ |
| 947 | undef->type = bfd_link_hash_defweak; |
| 948 | /* We replace original name with __imp_ prefixed, this |
| 949 | 1) may trash memory 2) leads to duplicate symbol generation. |
| 950 | Still, IMHO it's better than having name poluted. */ |
| 951 | undef->root.string = sym->root.string; |
| 952 | undef->u.def.value = sym->u.def.value; |
| 953 | undef->u.def.section = sym->u.def.section; |
| 954 | } |
| 955 | } |
| 956 | } |
| 957 | } |
| 958 | |
| 959 | static bfd_boolean |
| 960 | pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED) |
| 961 | { |
| 962 | if (pe_dll_extra_pe_debug) |
| 963 | printf ("+%s\n", h->string); |
| 964 | |
| 965 | return TRUE; |
| 966 | } |
| 967 | #endif /* DLL_SUPPORT */ |
| 968 | |
| 969 | |
| 970 | static void |
| 971 | gld_${EMULATION_NAME}_after_open (void) |
| 972 | { |
| 973 | #ifdef DLL_SUPPORT |
| 974 | if (pe_dll_extra_pe_debug) |
| 975 | { |
| 976 | bfd *a; |
| 977 | struct bfd_link_hash_entry *sym; |
| 978 | |
| 979 | printf ("%s()\n", __FUNCTION__); |
| 980 | |
| 981 | for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next) |
| 982 | printf ("-%s\n", sym->root.string); |
| 983 | bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL); |
| 984 | |
| 985 | for (a = link_info.input_bfds; a; a = a->link_next) |
| 986 | printf ("*%s\n",a->filename); |
| 987 | } |
| 988 | #endif |
| 989 | |
| 990 | /* Pass the wacky PE command line options into the output bfd. |
| 991 | FIXME: This should be done via a function, rather than by |
| 992 | including an internal BFD header. */ |
| 993 | |
| 994 | if (coff_data (output_bfd) == NULL || coff_data (output_bfd)->pe == 0) |
| 995 | einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"), output_bfd); |
| 996 | |
| 997 | pe_data (output_bfd)->pe_opthdr = pe; |
| 998 | pe_data (output_bfd)->dll = init[DLLOFF].value; |
| 999 | pe_data (output_bfd)->real_flags |= real_flags; |
| 1000 | |
| 1001 | #ifdef DLL_SUPPORT |
| 1002 | if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */ |
| 1003 | pe_fixup_stdcalls (); |
| 1004 | |
| 1005 | pe_process_import_defs (output_bfd, & link_info); |
| 1006 | |
| 1007 | pe_find_data_imports (); |
| 1008 | |
| 1009 | #if defined (TARGET_IS_i386pe) \ |
| 1010 | || defined (TARGET_IS_armpe) \ |
| 1011 | || defined (TARGET_IS_arm_epoc_pe) \ |
| 1012 | || defined (TARGET_IS_arm_wince_pe) |
| 1013 | if (!link_info.relocatable) |
| 1014 | pe_dll_build_sections (output_bfd, &link_info); |
| 1015 | else |
| 1016 | pe_exe_build_sections (output_bfd, &link_info); |
| 1017 | #else |
| 1018 | if (link_info.shared) |
| 1019 | pe_dll_build_sections (output_bfd, &link_info); |
| 1020 | #endif |
| 1021 | #endif /* DLL_SUPPORT */ |
| 1022 | |
| 1023 | #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) |
| 1024 | if (strstr (bfd_get_target (output_bfd), "arm") == NULL) |
| 1025 | { |
| 1026 | /* The arm backend needs special fields in the output hash structure. |
| 1027 | These will only be created if the output format is an arm format, |
| 1028 | hence we do not support linking and changing output formats at the |
| 1029 | same time. Use a link followed by objcopy to change output formats. */ |
| 1030 | einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n"); |
| 1031 | return; |
| 1032 | } |
| 1033 | { |
| 1034 | /* Find a BFD that can hold the interworking stubs. */ |
| 1035 | LANG_FOR_EACH_INPUT_STATEMENT (is) |
| 1036 | { |
| 1037 | if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info)) |
| 1038 | break; |
| 1039 | } |
| 1040 | } |
| 1041 | #endif |
| 1042 | |
| 1043 | { |
| 1044 | /* This next chunk of code tries to detect the case where you have |
| 1045 | two import libraries for the same DLL (specifically, |
| 1046 | symbolically linking libm.a and libc.a in cygwin to |
| 1047 | libcygwin.a). In those cases, it's possible for function |
| 1048 | thunks from the second implib to be used but without the |
| 1049 | head/tail objects, causing an improper import table. We detect |
| 1050 | those cases and rename the "other" import libraries to match |
| 1051 | the one the head/tail come from, so that the linker will sort |
| 1052 | things nicely and produce a valid import table. */ |
| 1053 | |
| 1054 | LANG_FOR_EACH_INPUT_STATEMENT (is) |
| 1055 | { |
| 1056 | if (is->the_bfd->my_archive) |
| 1057 | { |
| 1058 | int idata2 = 0, reloc_count=0, is_imp = 0; |
| 1059 | asection *sec; |
| 1060 | |
| 1061 | /* See if this is an import library thunk. */ |
| 1062 | for (sec = is->the_bfd->sections; sec; sec = sec->next) |
| 1063 | { |
| 1064 | if (strcmp (sec->name, ".idata\$2") == 0) |
| 1065 | idata2 = 1; |
| 1066 | if (CONST_STRNEQ (sec->name, ".idata\$")) |
| 1067 | is_imp = 1; |
| 1068 | reloc_count += sec->reloc_count; |
| 1069 | } |
| 1070 | |
| 1071 | if (is_imp && !idata2 && reloc_count) |
| 1072 | { |
| 1073 | /* It is, look for the reference to head and see if it's |
| 1074 | from our own library. */ |
| 1075 | for (sec = is->the_bfd->sections; sec; sec = sec->next) |
| 1076 | { |
| 1077 | int i; |
| 1078 | long symsize; |
| 1079 | long relsize; |
| 1080 | asymbol **symbols; |
| 1081 | arelent **relocs; |
| 1082 | int nrelocs; |
| 1083 | |
| 1084 | symsize = bfd_get_symtab_upper_bound (is->the_bfd); |
| 1085 | if (symsize < 1) |
| 1086 | break; |
| 1087 | relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec); |
| 1088 | if (relsize < 1) |
| 1089 | break; |
| 1090 | |
| 1091 | symbols = (asymbol **) xmalloc (symsize); |
| 1092 | symsize = bfd_canonicalize_symtab (is->the_bfd, symbols); |
| 1093 | if (symsize < 0) |
| 1094 | { |
| 1095 | einfo ("%X%P: unable to process symbols: %E"); |
| 1096 | return; |
| 1097 | } |
| 1098 | |
| 1099 | relocs = (arelent **) xmalloc ((size_t) relsize); |
| 1100 | nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec, |
| 1101 | relocs, symbols); |
| 1102 | if (nrelocs < 0) |
| 1103 | { |
| 1104 | free (relocs); |
| 1105 | einfo ("%X%P: unable to process relocs: %E"); |
| 1106 | return; |
| 1107 | } |
| 1108 | |
| 1109 | for (i = 0; i < nrelocs; i++) |
| 1110 | { |
| 1111 | struct bfd_symbol *s; |
| 1112 | struct bfd_link_hash_entry * blhe; |
| 1113 | char *other_bfd_filename; |
| 1114 | char *n; |
| 1115 | |
| 1116 | s = (relocs[i]->sym_ptr_ptr)[0]; |
| 1117 | |
| 1118 | if (s->flags & BSF_LOCAL) |
| 1119 | continue; |
| 1120 | |
| 1121 | /* Thunk section with reloc to another bfd. */ |
| 1122 | blhe = bfd_link_hash_lookup (link_info.hash, |
| 1123 | s->name, |
| 1124 | FALSE, FALSE, TRUE); |
| 1125 | |
| 1126 | if (blhe == NULL |
| 1127 | || blhe->type != bfd_link_hash_defined) |
| 1128 | continue; |
| 1129 | |
| 1130 | other_bfd_filename |
| 1131 | = blhe->u.def.section->owner->my_archive |
| 1132 | ? bfd_get_filename (blhe->u.def.section->owner->my_archive) |
| 1133 | : bfd_get_filename (blhe->u.def.section->owner); |
| 1134 | |
| 1135 | if (strcmp (bfd_get_filename (is->the_bfd->my_archive), |
| 1136 | other_bfd_filename) == 0) |
| 1137 | continue; |
| 1138 | |
| 1139 | /* Rename this implib to match the other one. */ |
| 1140 | n = xmalloc (strlen (other_bfd_filename) + 1); |
| 1141 | strcpy (n, other_bfd_filename); |
| 1142 | is->the_bfd->my_archive->filename = n; |
| 1143 | } |
| 1144 | |
| 1145 | free (relocs); |
| 1146 | /* Note - we do not free the symbols, |
| 1147 | they are now cached in the BFD. */ |
| 1148 | } |
| 1149 | } |
| 1150 | } |
| 1151 | } |
| 1152 | } |
| 1153 | |
| 1154 | { |
| 1155 | int is_ms_arch = 0; |
| 1156 | bfd *cur_arch = 0; |
| 1157 | lang_input_statement_type *is2; |
| 1158 | lang_input_statement_type *is3; |
| 1159 | |
| 1160 | /* Careful - this is a shell script. Watch those dollar signs! */ |
| 1161 | /* Microsoft import libraries have every member named the same, |
| 1162 | and not in the right order for us to link them correctly. We |
| 1163 | must detect these and rename the members so that they'll link |
| 1164 | correctly. There are three types of objects: the head, the |
| 1165 | thunks, and the sentinel(s). The head is easy; it's the one |
| 1166 | with idata2. We assume that the sentinels won't have relocs, |
| 1167 | and the thunks will. It's easier than checking the symbol |
| 1168 | table for external references. */ |
| 1169 | LANG_FOR_EACH_INPUT_STATEMENT (is) |
| 1170 | { |
| 1171 | if (is->the_bfd->my_archive) |
| 1172 | { |
| 1173 | char *pnt; |
| 1174 | bfd *arch = is->the_bfd->my_archive; |
| 1175 | |
| 1176 | if (cur_arch != arch) |
| 1177 | { |
| 1178 | cur_arch = arch; |
| 1179 | is_ms_arch = 1; |
| 1180 | |
| 1181 | for (is3 = is; |
| 1182 | is3 && is3->the_bfd->my_archive == arch; |
| 1183 | is3 = (lang_input_statement_type *) is3->next) |
| 1184 | { |
| 1185 | /* A MS dynamic import library can also contain static |
| 1186 | members, so look for the first element with a .dll |
| 1187 | extension, and use that for the remainder of the |
| 1188 | comparisons. */ |
| 1189 | pnt = strrchr (is3->the_bfd->filename, '.'); |
| 1190 | if (pnt != NULL && strcmp (pnt, ".dll") == 0) |
| 1191 | break; |
| 1192 | } |
| 1193 | |
| 1194 | if (is3 == NULL) |
| 1195 | is_ms_arch = 0; |
| 1196 | else |
| 1197 | { |
| 1198 | /* OK, found one. Now look to see if the remaining |
| 1199 | (dynamic import) members use the same name. */ |
| 1200 | for (is2 = is; |
| 1201 | is2 && is2->the_bfd->my_archive == arch; |
| 1202 | is2 = (lang_input_statement_type *) is2->next) |
| 1203 | { |
| 1204 | /* Skip static members, ie anything with a .obj |
| 1205 | extension. */ |
| 1206 | pnt = strrchr (is2->the_bfd->filename, '.'); |
| 1207 | if (pnt != NULL && strcmp (pnt, ".obj") == 0) |
| 1208 | continue; |
| 1209 | |
| 1210 | if (strcmp (is3->the_bfd->filename, |
| 1211 | is2->the_bfd->filename)) |
| 1212 | { |
| 1213 | is_ms_arch = 0; |
| 1214 | break; |
| 1215 | } |
| 1216 | } |
| 1217 | } |
| 1218 | } |
| 1219 | |
| 1220 | /* This fragment might have come from an .obj file in a Microsoft |
| 1221 | import, and not an actual import record. If this is the case, |
| 1222 | then leave the filename alone. */ |
| 1223 | pnt = strrchr (is->the_bfd->filename, '.'); |
| 1224 | |
| 1225 | if (is_ms_arch && (strcmp (pnt, ".dll") == 0)) |
| 1226 | { |
| 1227 | int idata2 = 0, reloc_count=0; |
| 1228 | asection *sec; |
| 1229 | char *new_name, seq; |
| 1230 | |
| 1231 | for (sec = is->the_bfd->sections; sec; sec = sec->next) |
| 1232 | { |
| 1233 | if (strcmp (sec->name, ".idata\$2") == 0) |
| 1234 | idata2 = 1; |
| 1235 | reloc_count += sec->reloc_count; |
| 1236 | } |
| 1237 | |
| 1238 | if (idata2) /* .idata2 is the TOC */ |
| 1239 | seq = 'a'; |
| 1240 | else if (reloc_count > 0) /* thunks */ |
| 1241 | seq = 'b'; |
| 1242 | else /* sentinel */ |
| 1243 | seq = 'c'; |
| 1244 | |
| 1245 | new_name = xmalloc (strlen (is->the_bfd->filename) + 3); |
| 1246 | sprintf (new_name, "%s.%c", is->the_bfd->filename, seq); |
| 1247 | is->the_bfd->filename = new_name; |
| 1248 | |
| 1249 | new_name = xmalloc (strlen (is->filename) + 3); |
| 1250 | sprintf (new_name, "%s.%c", is->filename, seq); |
| 1251 | is->filename = new_name; |
| 1252 | } |
| 1253 | } |
| 1254 | } |
| 1255 | } |
| 1256 | |
| 1257 | { |
| 1258 | /* The following chunk of code tries to identify jump stubs in |
| 1259 | import libraries which are dead code and eliminates them |
| 1260 | from the final link. For each exported symbol <sym>, there |
| 1261 | is a object file in the import library with a .text section |
| 1262 | and several .idata$* sections. The .text section contains the |
| 1263 | symbol definition for <sym> which is a jump stub of the form |
| 1264 | jmp *__imp_<sym>. The .idata$5 contains the symbol definition |
| 1265 | for __imp_<sym> which is the address of the slot for <sym> in |
| 1266 | the import address table. When a symbol is imported explicitly |
| 1267 | using __declspec(dllimport) declaration, the compiler generates |
| 1268 | a reference to __imp_<sym> which directly resolves to the |
| 1269 | symbol in .idata$5, in which case the jump stub code is not |
| 1270 | needed. The following code tries to identify jump stub sections |
| 1271 | in import libraries which are not referred to by anyone and |
| 1272 | marks them for exclusion from the final link. */ |
| 1273 | LANG_FOR_EACH_INPUT_STATEMENT (is) |
| 1274 | { |
| 1275 | if (is->the_bfd->my_archive) |
| 1276 | { |
| 1277 | int is_imp = 0; |
| 1278 | asection *sec, *stub_sec = NULL; |
| 1279 | |
| 1280 | /* See if this is an import library thunk. */ |
| 1281 | for (sec = is->the_bfd->sections; sec; sec = sec->next) |
| 1282 | { |
| 1283 | if (strncmp (sec->name, ".idata\$", 7) == 0) |
| 1284 | is_imp = 1; |
| 1285 | /* The section containing the jmp stub has code |
| 1286 | and has a reloc. */ |
| 1287 | if ((sec->flags & SEC_CODE) && sec->reloc_count) |
| 1288 | stub_sec = sec; |
| 1289 | } |
| 1290 | |
| 1291 | if (is_imp && stub_sec) |
| 1292 | { |
| 1293 | long symsize; |
| 1294 | asymbol **symbols; |
| 1295 | long src_count; |
| 1296 | struct bfd_link_hash_entry * blhe; |
| 1297 | |
| 1298 | symsize = bfd_get_symtab_upper_bound (is->the_bfd); |
| 1299 | symbols = xmalloc (symsize); |
| 1300 | symsize = bfd_canonicalize_symtab (is->the_bfd, symbols); |
| 1301 | |
| 1302 | for (src_count = 0; src_count < symsize; src_count++) |
| 1303 | { |
| 1304 | if (symbols[src_count]->section->id == stub_sec->id) |
| 1305 | { |
| 1306 | /* This symbol belongs to the section containing |
| 1307 | the stub. */ |
| 1308 | blhe = bfd_link_hash_lookup (link_info.hash, |
| 1309 | symbols[src_count]->name, |
| 1310 | FALSE, FALSE, TRUE); |
| 1311 | /* If the symbol in the stub section has no other |
| 1312 | undefined references, exclude the stub section |
| 1313 | from the final link. */ |
| 1314 | if (blhe && (blhe->type == bfd_link_hash_defined) |
| 1315 | && (blhe->u.undef.next == NULL)) |
| 1316 | stub_sec->flags |= SEC_EXCLUDE; |
| 1317 | } |
| 1318 | } |
| 1319 | free (symbols); |
| 1320 | } |
| 1321 | } |
| 1322 | } |
| 1323 | } |
| 1324 | } |
| 1325 | \f |
| 1326 | static void |
| 1327 | gld_${EMULATION_NAME}_before_allocation (void) |
| 1328 | { |
| 1329 | #ifdef TARGET_IS_ppcpe |
| 1330 | /* Here we rummage through the found bfds to collect toc information. */ |
| 1331 | { |
| 1332 | LANG_FOR_EACH_INPUT_STATEMENT (is) |
| 1333 | { |
| 1334 | if (!ppc_process_before_allocation (is->the_bfd, &link_info)) |
| 1335 | { |
| 1336 | /* xgettext:c-format */ |
| 1337 | einfo (_("Errors encountered processing file %s\n"), is->filename); |
| 1338 | } |
| 1339 | } |
| 1340 | } |
| 1341 | |
| 1342 | /* We have seen it all. Allocate it, and carry on. */ |
| 1343 | ppc_allocate_toc_section (&link_info); |
| 1344 | #endif /* TARGET_IS_ppcpe */ |
| 1345 | |
| 1346 | #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) |
| 1347 | /* FIXME: we should be able to set the size of the interworking stub |
| 1348 | section. |
| 1349 | |
| 1350 | Here we rummage through the found bfds to collect glue |
| 1351 | information. FIXME: should this be based on a command line |
| 1352 | option? krk@cygnus.com. */ |
| 1353 | { |
| 1354 | LANG_FOR_EACH_INPUT_STATEMENT (is) |
| 1355 | { |
| 1356 | if (! bfd_arm_process_before_allocation |
| 1357 | (is->the_bfd, & link_info, support_old_code)) |
| 1358 | { |
| 1359 | /* xgettext:c-format */ |
| 1360 | einfo (_("Errors encountered processing file %s for interworking"), |
| 1361 | is->filename); |
| 1362 | } |
| 1363 | } |
| 1364 | } |
| 1365 | |
| 1366 | /* We have seen it all. Allocate it, and carry on. */ |
| 1367 | bfd_arm_allocate_interworking_sections (& link_info); |
| 1368 | #endif /* TARGET_IS_armpe || TARGET_IS_arm_epoc_pe || TARGET_IS_arm_wince_pe */ |
| 1369 | |
| 1370 | before_allocation_default (); |
| 1371 | } |
| 1372 | \f |
| 1373 | #ifdef DLL_SUPPORT |
| 1374 | /* This is called when an input file isn't recognized as a BFD. We |
| 1375 | check here for .DEF files and pull them in automatically. */ |
| 1376 | |
| 1377 | static int |
| 1378 | saw_option (char *option) |
| 1379 | { |
| 1380 | int i; |
| 1381 | |
| 1382 | for (i = 0; init[i].ptr; i++) |
| 1383 | if (strcmp (init[i].symbol, option) == 0) |
| 1384 | return init[i].inited; |
| 1385 | return 0; |
| 1386 | } |
| 1387 | #endif /* DLL_SUPPORT */ |
| 1388 | |
| 1389 | static bfd_boolean |
| 1390 | gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED) |
| 1391 | { |
| 1392 | #ifdef DLL_SUPPORT |
| 1393 | const char *ext = entry->filename + strlen (entry->filename) - 4; |
| 1394 | |
| 1395 | if (strcmp (ext, ".def") == 0 || strcmp (ext, ".DEF") == 0) |
| 1396 | { |
| 1397 | pe_def_file = def_file_parse (entry->filename, pe_def_file); |
| 1398 | |
| 1399 | if (pe_def_file) |
| 1400 | { |
| 1401 | int i, buflen=0, len; |
| 1402 | char *buf; |
| 1403 | |
| 1404 | for (i = 0; i < pe_def_file->num_exports; i++) |
| 1405 | { |
| 1406 | len = strlen (pe_def_file->exports[i].internal_name); |
| 1407 | if (buflen < len + 2) |
| 1408 | buflen = len + 2; |
| 1409 | } |
| 1410 | |
| 1411 | buf = (char *) xmalloc (buflen); |
| 1412 | |
| 1413 | for (i = 0; i < pe_def_file->num_exports; i++) |
| 1414 | { |
| 1415 | struct bfd_link_hash_entry *h; |
| 1416 | |
| 1417 | sprintf (buf, "%s%s", U (""), pe_def_file->exports[i].internal_name); |
| 1418 | |
| 1419 | h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE); |
| 1420 | if (h == (struct bfd_link_hash_entry *) NULL) |
| 1421 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); |
| 1422 | if (h->type == bfd_link_hash_new) |
| 1423 | { |
| 1424 | h->type = bfd_link_hash_undefined; |
| 1425 | h->u.undef.abfd = NULL; |
| 1426 | bfd_link_add_undef (link_info.hash, h); |
| 1427 | } |
| 1428 | } |
| 1429 | free (buf); |
| 1430 | |
| 1431 | /* def_file_print (stdout, pe_def_file); */ |
| 1432 | if (pe_def_file->is_dll == 1) |
| 1433 | link_info.shared = 1; |
| 1434 | |
| 1435 | if (pe_def_file->base_address != (bfd_vma)(-1)) |
| 1436 | { |
| 1437 | pe.ImageBase = |
| 1438 | pe_data (output_bfd)->pe_opthdr.ImageBase = |
| 1439 | init[IMAGEBASEOFF].value = pe_def_file->base_address; |
| 1440 | init[IMAGEBASEOFF].inited = 1; |
| 1441 | if (image_base_statement) |
| 1442 | image_base_statement->exp = |
| 1443 | exp_assop ('=', "__image_base__", exp_intop (pe.ImageBase)); |
| 1444 | } |
| 1445 | |
| 1446 | if (pe_def_file->stack_reserve != -1 |
| 1447 | && ! saw_option ("__size_of_stack_reserve__")) |
| 1448 | { |
| 1449 | pe.SizeOfStackReserve = pe_def_file->stack_reserve; |
| 1450 | if (pe_def_file->stack_commit != -1) |
| 1451 | pe.SizeOfStackCommit = pe_def_file->stack_commit; |
| 1452 | } |
| 1453 | if (pe_def_file->heap_reserve != -1 |
| 1454 | && ! saw_option ("__size_of_heap_reserve__")) |
| 1455 | { |
| 1456 | pe.SizeOfHeapReserve = pe_def_file->heap_reserve; |
| 1457 | if (pe_def_file->heap_commit != -1) |
| 1458 | pe.SizeOfHeapCommit = pe_def_file->heap_commit; |
| 1459 | } |
| 1460 | return TRUE; |
| 1461 | } |
| 1462 | } |
| 1463 | #endif |
| 1464 | return FALSE; |
| 1465 | } |
| 1466 | |
| 1467 | static bfd_boolean |
| 1468 | gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED) |
| 1469 | { |
| 1470 | #ifdef DLL_SUPPORT |
| 1471 | #ifdef TARGET_IS_i386pe |
| 1472 | pe_dll_id_target ("pei-i386"); |
| 1473 | #endif |
| 1474 | #ifdef TARGET_IS_shpe |
| 1475 | pe_dll_id_target ("pei-shl"); |
| 1476 | #endif |
| 1477 | #ifdef TARGET_IS_mipspe |
| 1478 | pe_dll_id_target ("pei-mips"); |
| 1479 | #endif |
| 1480 | #ifdef TARGET_IS_armpe |
| 1481 | pe_dll_id_target ("pei-arm-little"); |
| 1482 | #endif |
| 1483 | #ifdef TARGET_IS_arm_epoc_pe |
| 1484 | pe_dll_id_target ("epoc-pei-arm-little"); |
| 1485 | #endif |
| 1486 | #ifdef TARGET_IS_arm_wince_pe |
| 1487 | pe_dll_id_target ("pei-arm-wince-little"); |
| 1488 | #endif |
| 1489 | if (pe_bfd_is_dll (entry->the_bfd)) |
| 1490 | return pe_implied_import_dll (entry->filename); |
| 1491 | #endif |
| 1492 | return FALSE; |
| 1493 | } |
| 1494 | |
| 1495 | static void |
| 1496 | gld_${EMULATION_NAME}_finish (void) |
| 1497 | { |
| 1498 | #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) |
| 1499 | struct bfd_link_hash_entry * h; |
| 1500 | |
| 1501 | if (thumb_entry_symbol != NULL) |
| 1502 | { |
| 1503 | h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol, |
| 1504 | FALSE, FALSE, TRUE); |
| 1505 | |
| 1506 | if (h != (struct bfd_link_hash_entry *) NULL |
| 1507 | && (h->type == bfd_link_hash_defined |
| 1508 | || h->type == bfd_link_hash_defweak) |
| 1509 | && h->u.def.section->output_section != NULL) |
| 1510 | { |
| 1511 | static char buffer[32]; |
| 1512 | bfd_vma val; |
| 1513 | |
| 1514 | /* Special procesing is required for a Thumb entry symbol. The |
| 1515 | bottom bit of its address must be set. */ |
| 1516 | val = (h->u.def.value |
| 1517 | + bfd_get_section_vma (output_bfd, |
| 1518 | h->u.def.section->output_section) |
| 1519 | + h->u.def.section->output_offset); |
| 1520 | |
| 1521 | val |= 1; |
| 1522 | |
| 1523 | /* Now convert this value into a string and store it in entry_symbol |
| 1524 | where the lang_finish() function will pick it up. */ |
| 1525 | buffer[0] = '0'; |
| 1526 | buffer[1] = 'x'; |
| 1527 | |
| 1528 | sprintf_vma (buffer + 2, val); |
| 1529 | |
| 1530 | if (entry_symbol.name != NULL && entry_from_cmdline) |
| 1531 | einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"), |
| 1532 | thumb_entry_symbol, entry_symbol.name); |
| 1533 | entry_symbol.name = buffer; |
| 1534 | } |
| 1535 | else |
| 1536 | einfo (_("%P: warning: connot find thumb start symbol %s\n"), thumb_entry_symbol); |
| 1537 | } |
| 1538 | #endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) */ |
| 1539 | |
| 1540 | finish_default (); |
| 1541 | |
| 1542 | #ifdef DLL_SUPPORT |
| 1543 | if (link_info.shared |
| 1544 | #if !defined(TARGET_IS_shpe) && !defined(TARGET_IS_mipspe) |
| 1545 | || (!link_info.relocatable && pe_def_file->num_exports != 0) |
| 1546 | #endif |
| 1547 | ) |
| 1548 | { |
| 1549 | pe_dll_fill_sections (output_bfd, &link_info); |
| 1550 | if (pe_implib_filename) |
| 1551 | pe_dll_generate_implib (pe_def_file, pe_implib_filename); |
| 1552 | } |
| 1553 | #if defined(TARGET_IS_shpe) || defined(TARGET_IS_mipspe) |
| 1554 | /* ARM doesn't need relocs. */ |
| 1555 | else |
| 1556 | { |
| 1557 | pe_exe_fill_sections (output_bfd, &link_info); |
| 1558 | } |
| 1559 | #endif |
| 1560 | |
| 1561 | if (pe_out_def_filename) |
| 1562 | pe_dll_generate_def_file (pe_out_def_filename); |
| 1563 | #endif /* DLL_SUPPORT */ |
| 1564 | |
| 1565 | /* I don't know where .idata gets set as code, but it shouldn't be. */ |
| 1566 | { |
| 1567 | asection *asec = bfd_get_section_by_name (output_bfd, ".idata"); |
| 1568 | |
| 1569 | if (asec) |
| 1570 | { |
| 1571 | asec->flags &= ~SEC_CODE; |
| 1572 | asec->flags |= SEC_DATA; |
| 1573 | } |
| 1574 | } |
| 1575 | } |
| 1576 | |
| 1577 | \f |
| 1578 | /* Place an orphan section. |
| 1579 | |
| 1580 | We use this to put sections in a reasonable place in the file, and |
| 1581 | to ensure that they are aligned as required. |
| 1582 | |
| 1583 | We handle grouped sections here as well. A section named .foo$nn |
| 1584 | goes into the output section .foo. All grouped sections are sorted |
| 1585 | by name. |
| 1586 | |
| 1587 | Grouped sections for the default sections are handled by the |
| 1588 | default linker script using wildcards, and are sorted by |
| 1589 | sort_sections. */ |
| 1590 | |
| 1591 | static bfd_boolean |
| 1592 | gld_${EMULATION_NAME}_place_orphan (asection *s) |
| 1593 | { |
| 1594 | const char *secname; |
| 1595 | const char *orig_secname; |
| 1596 | char *dollar = NULL; |
| 1597 | lang_output_section_statement_type *os; |
| 1598 | lang_statement_list_type add_child; |
| 1599 | |
| 1600 | secname = bfd_get_section_name (s->owner, s); |
| 1601 | |
| 1602 | /* Look through the script to see where to place this section. */ |
| 1603 | orig_secname = secname; |
| 1604 | if (!link_info.relocatable |
| 1605 | && (dollar = strchr (secname, '$')) != NULL) |
| 1606 | { |
| 1607 | size_t len = dollar - orig_secname; |
| 1608 | char *newname = xmalloc (len + 1); |
| 1609 | memcpy (newname, orig_secname, len); |
| 1610 | newname[len] = '\0'; |
| 1611 | secname = newname; |
| 1612 | } |
| 1613 | |
| 1614 | os = lang_output_section_find (secname); |
| 1615 | |
| 1616 | lang_list_init (&add_child); |
| 1617 | |
| 1618 | if (os != NULL |
| 1619 | && (os->bfd_section == NULL |
| 1620 | || os->bfd_section->flags == 0 |
| 1621 | || ((s->flags ^ os->bfd_section->flags) |
| 1622 | & (SEC_LOAD | SEC_ALLOC)) == 0)) |
| 1623 | { |
| 1624 | /* We already have an output section statement with this |
| 1625 | name, and its bfd section, if any, has compatible flags. |
| 1626 | If the section already exists but does not have any flags set, |
| 1627 | then it has been created by the linker, probably as a result of |
| 1628 | a --section-start command line switch. */ |
| 1629 | lang_add_section (&add_child, s, os); |
| 1630 | } |
| 1631 | else |
| 1632 | { |
| 1633 | static struct orphan_save hold[] = |
| 1634 | { |
| 1635 | { ".text", |
| 1636 | SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE, |
| 1637 | 0, 0, 0, 0 }, |
| 1638 | { ".rdata", |
| 1639 | SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA, |
| 1640 | 0, 0, 0, 0 }, |
| 1641 | { ".data", |
| 1642 | SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA, |
| 1643 | 0, 0, 0, 0 }, |
| 1644 | { ".bss", |
| 1645 | SEC_ALLOC, |
| 1646 | 0, 0, 0, 0 } |
| 1647 | }; |
| 1648 | enum orphan_save_index |
| 1649 | { |
| 1650 | orphan_text = 0, |
| 1651 | orphan_rodata, |
| 1652 | orphan_data, |
| 1653 | orphan_bss |
| 1654 | }; |
| 1655 | static int orphan_init_done = 0; |
| 1656 | struct orphan_save *place; |
| 1657 | lang_output_section_statement_type *after; |
| 1658 | etree_type *address; |
| 1659 | |
| 1660 | if (!orphan_init_done) |
| 1661 | { |
| 1662 | struct orphan_save *ho; |
| 1663 | for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho) |
| 1664 | if (ho->name != NULL) |
| 1665 | { |
| 1666 | ho->os = lang_output_section_find (ho->name); |
| 1667 | if (ho->os != NULL && ho->os->flags == 0) |
| 1668 | ho->os->flags = ho->flags; |
| 1669 | } |
| 1670 | orphan_init_done = 1; |
| 1671 | } |
| 1672 | |
| 1673 | /* Try to put the new output section in a reasonable place based |
| 1674 | on the section name and section flags. */ |
| 1675 | |
| 1676 | place = NULL; |
| 1677 | if ((s->flags & SEC_ALLOC) == 0) |
| 1678 | ; |
| 1679 | else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) |
| 1680 | place = &hold[orphan_bss]; |
| 1681 | else if ((s->flags & SEC_READONLY) == 0) |
| 1682 | place = &hold[orphan_data]; |
| 1683 | else if ((s->flags & SEC_CODE) == 0) |
| 1684 | place = &hold[orphan_rodata]; |
| 1685 | else |
| 1686 | place = &hold[orphan_text]; |
| 1687 | |
| 1688 | after = NULL; |
| 1689 | if (place != NULL) |
| 1690 | { |
| 1691 | if (place->os == NULL) |
| 1692 | place->os = lang_output_section_find (place->name); |
| 1693 | after = place->os; |
| 1694 | if (after == NULL) |
| 1695 | after = lang_output_section_find_by_flags (s, &place->os, NULL); |
| 1696 | if (after == NULL) |
| 1697 | /* *ABS* is always the first output section statement. */ |
| 1698 | after = (&lang_output_section_statement.head |
| 1699 | ->output_section_statement); |
| 1700 | } |
| 1701 | |
| 1702 | /* Choose a unique name for the section. This will be needed if the |
| 1703 | same section name appears in the input file with different |
| 1704 | loadable or allocatable characteristics. */ |
| 1705 | if (bfd_get_section_by_name (output_bfd, secname) != NULL) |
| 1706 | { |
| 1707 | static int count = 1; |
| 1708 | secname = bfd_get_unique_section_name (output_bfd, secname, &count); |
| 1709 | if (secname == NULL) |
| 1710 | einfo ("%F%P: place_orphan failed: %E\n"); |
| 1711 | } |
| 1712 | |
| 1713 | /* All sections in an executable must be aligned to a page boundary. */ |
| 1714 | address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__")); |
| 1715 | os = lang_insert_orphan (s, secname, after, place, address, &add_child); |
| 1716 | } |
| 1717 | |
| 1718 | { |
| 1719 | lang_statement_union_type **pl = &os->children.head; |
| 1720 | |
| 1721 | if (dollar != NULL) |
| 1722 | { |
| 1723 | bfd_boolean found_dollar; |
| 1724 | |
| 1725 | /* The section name has a '$'. Sort it with the other '$' |
| 1726 | sections. */ |
| 1727 | found_dollar = FALSE; |
| 1728 | for ( ; *pl != NULL; pl = &(*pl)->header.next) |
| 1729 | { |
| 1730 | lang_input_section_type *ls; |
| 1731 | const char *lname; |
| 1732 | |
| 1733 | if ((*pl)->header.type != lang_input_section_enum) |
| 1734 | continue; |
| 1735 | |
| 1736 | ls = &(*pl)->input_section; |
| 1737 | |
| 1738 | lname = bfd_get_section_name (ls->section->owner, ls->section); |
| 1739 | if (strchr (lname, '$') == NULL) |
| 1740 | { |
| 1741 | if (found_dollar) |
| 1742 | break; |
| 1743 | } |
| 1744 | else |
| 1745 | { |
| 1746 | found_dollar = TRUE; |
| 1747 | if (strcmp (orig_secname, lname) < 0) |
| 1748 | break; |
| 1749 | } |
| 1750 | } |
| 1751 | } |
| 1752 | |
| 1753 | if (add_child.head != NULL) |
| 1754 | { |
| 1755 | add_child.head->header.next = *pl; |
| 1756 | *pl = add_child.head; |
| 1757 | } |
| 1758 | } |
| 1759 | |
| 1760 | return TRUE; |
| 1761 | } |
| 1762 | |
| 1763 | static bfd_boolean |
| 1764 | gld_${EMULATION_NAME}_open_dynamic_archive |
| 1765 | (const char *arch ATTRIBUTE_UNUSED, search_dirs_type *search, |
| 1766 | lang_input_statement_type *entry) |
| 1767 | { |
| 1768 | static const struct |
| 1769 | { |
| 1770 | const char * format; |
| 1771 | bfd_boolean use_prefix; |
| 1772 | } |
| 1773 | libname_fmt [] = |
| 1774 | { |
| 1775 | /* Preferred explicit import library for dll's. */ |
| 1776 | { "lib%s.dll.a", FALSE }, |
| 1777 | /* Alternate explicit import library for dll's. */ |
| 1778 | { "%s.dll.a", FALSE }, |
| 1779 | /* "libfoo.a" could be either an import lib or a static lib. |
| 1780 | For backwards compatibility, libfoo.a needs to precede |
| 1781 | libfoo.dll and foo.dll in the search. */ |
| 1782 | { "lib%s.a", FALSE }, |
| 1783 | /* The 'native' spelling of an import lib name is "foo.lib". */ |
| 1784 | { "%s.lib", FALSE }, |
| 1785 | #ifdef DLL_SUPPORT |
| 1786 | /* Try "<prefix>foo.dll" (preferred dll name, if specified). */ |
| 1787 | { "%s%s.dll", TRUE }, |
| 1788 | #endif |
| 1789 | /* Try "libfoo.dll" (default preferred dll name). */ |
| 1790 | { "lib%s.dll", FALSE }, |
| 1791 | /* Finally try 'native' dll name "foo.dll". */ |
| 1792 | { "%s.dll", FALSE }, |
| 1793 | /* Note: If adding more formats to this table, make sure to check to |
| 1794 | see if their length is longer than libname_fmt[0].format, and if |
| 1795 | so, update the call to xmalloc() below. */ |
| 1796 | { NULL, FALSE } |
| 1797 | }; |
| 1798 | static unsigned int format_max_len = 0; |
| 1799 | const char * filename; |
| 1800 | char * full_string; |
| 1801 | char * base_string; |
| 1802 | unsigned int i; |
| 1803 | |
| 1804 | |
| 1805 | if (! entry->is_archive) |
| 1806 | return FALSE; |
| 1807 | |
| 1808 | filename = entry->filename; |
| 1809 | |
| 1810 | if (format_max_len == 0) |
| 1811 | /* We need to allow space in the memory that we are going to allocate |
| 1812 | for the characters in the format string. Since the format array is |
| 1813 | static we only need to calculate this information once. In theory |
| 1814 | this value could also be computed statically, but this introduces |
| 1815 | the possibility for a discrepancy and hence a possible memory |
| 1816 | corruption. The lengths we compute here will be too long because |
| 1817 | they will include any formating characters (%s) in the strings, but |
| 1818 | this will not matter. */ |
| 1819 | for (i = 0; libname_fmt[i].format; i++) |
| 1820 | if (format_max_len < strlen (libname_fmt[i].format)) |
| 1821 | format_max_len = strlen (libname_fmt[i].format); |
| 1822 | |
| 1823 | full_string = xmalloc (strlen (search->name) |
| 1824 | + strlen (filename) |
| 1825 | + format_max_len |
| 1826 | #ifdef DLL_SUPPORT |
| 1827 | + (pe_dll_search_prefix |
| 1828 | ? strlen (pe_dll_search_prefix) : 0) |
| 1829 | #endif |
| 1830 | /* Allow for the terminating NUL and for the path |
| 1831 | separator character that is inserted between |
| 1832 | search->name and the start of the format string. */ |
| 1833 | + 2); |
| 1834 | |
| 1835 | sprintf (full_string, "%s/", search->name); |
| 1836 | base_string = full_string + strlen (full_string); |
| 1837 | |
| 1838 | for (i = 0; libname_fmt[i].format; i++) |
| 1839 | { |
| 1840 | #ifdef DLL_SUPPORT |
| 1841 | if (libname_fmt[i].use_prefix) |
| 1842 | { |
| 1843 | if (!pe_dll_search_prefix) |
| 1844 | continue; |
| 1845 | sprintf (base_string, libname_fmt[i].format, pe_dll_search_prefix, filename); |
| 1846 | } |
| 1847 | else |
| 1848 | #endif |
| 1849 | sprintf (base_string, libname_fmt[i].format, filename); |
| 1850 | |
| 1851 | if (ldfile_try_open_bfd (full_string, entry)) |
| 1852 | break; |
| 1853 | } |
| 1854 | |
| 1855 | if (!libname_fmt[i].format) |
| 1856 | { |
| 1857 | free (full_string); |
| 1858 | return FALSE; |
| 1859 | } |
| 1860 | |
| 1861 | entry->filename = full_string; |
| 1862 | |
| 1863 | return TRUE; |
| 1864 | } |
| 1865 | |
| 1866 | static int |
| 1867 | gld_${EMULATION_NAME}_find_potential_libraries |
| 1868 | (char *name, lang_input_statement_type *entry) |
| 1869 | { |
| 1870 | return ldfile_open_file_search (name, entry, "", ".lib"); |
| 1871 | } |
| 1872 | \f |
| 1873 | static char * |
| 1874 | gld_${EMULATION_NAME}_get_script (int *isfile) |
| 1875 | EOF |
| 1876 | # Scripts compiled in. |
| 1877 | # sed commands to quote an ld script as a C string. |
| 1878 | sc="-f stringify.sed" |
| 1879 | |
| 1880 | cat >>e${EMULATION_NAME}.c <<EOF |
| 1881 | { |
| 1882 | *isfile = 0; |
| 1883 | |
| 1884 | if (link_info.relocatable && config.build_constructors) |
| 1885 | return |
| 1886 | EOF |
| 1887 | sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c |
| 1888 | echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c |
| 1889 | sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c |
| 1890 | echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c |
| 1891 | sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c |
| 1892 | echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c |
| 1893 | sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c |
| 1894 | echo ' ; else return' >> e${EMULATION_NAME}.c |
| 1895 | sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c |
| 1896 | echo '; }' >> e${EMULATION_NAME}.c |
| 1897 | |
| 1898 | cat >>e${EMULATION_NAME}.c <<EOF |
| 1899 | |
| 1900 | |
| 1901 | struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = |
| 1902 | { |
| 1903 | gld_${EMULATION_NAME}_before_parse, |
| 1904 | syslib_default, |
| 1905 | hll_default, |
| 1906 | gld_${EMULATION_NAME}_after_parse, |
| 1907 | gld_${EMULATION_NAME}_after_open, |
| 1908 | after_allocation_default, |
| 1909 | set_output_arch_default, |
| 1910 | ldemul_default_target, |
| 1911 | gld_${EMULATION_NAME}_before_allocation, |
| 1912 | gld_${EMULATION_NAME}_get_script, |
| 1913 | "${EMULATION_NAME}", |
| 1914 | "${OUTPUT_FORMAT}", |
| 1915 | gld_${EMULATION_NAME}_finish, |
| 1916 | NULL, /* Create output section statements. */ |
| 1917 | gld_${EMULATION_NAME}_open_dynamic_archive, |
| 1918 | gld_${EMULATION_NAME}_place_orphan, |
| 1919 | gld_${EMULATION_NAME}_set_symbols, |
| 1920 | NULL, /* parse_args */ |
| 1921 | gld${EMULATION_NAME}_add_options, |
| 1922 | gld${EMULATION_NAME}_handle_option, |
| 1923 | gld_${EMULATION_NAME}_unrecognized_file, |
| 1924 | gld_${EMULATION_NAME}_list_options, |
| 1925 | gld_${EMULATION_NAME}_recognized_file, |
| 1926 | gld_${EMULATION_NAME}_find_potential_libraries, |
| 1927 | NULL /* new_vers_pattern. */ |
| 1928 | }; |
| 1929 | EOF |