| 1 | # This shell script emits a C file. -*- C -*- |
| 2 | # It does some substitutions. |
| 3 | if [ -z "$MACHINE" ]; then |
| 4 | OUTPUT_ARCH=${ARCH} |
| 5 | else |
| 6 | OUTPUT_ARCH=${ARCH}:${MACHINE} |
| 7 | fi |
| 8 | cat >e${EMULATION_NAME}.c <<EOF |
| 9 | /* This file is part of GLD, the Gnu Linker. |
| 10 | Copyright 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003 |
| 11 | Free Software Foundation, Inc. |
| 12 | |
| 13 | This program is free software; you can redistribute it and/or modify |
| 14 | it under the terms of the GNU General Public License as published by |
| 15 | the Free Software Foundation; either version 2 of the License, or |
| 16 | (at your option) any later version. |
| 17 | |
| 18 | This program is distributed in the hope that it will be useful, |
| 19 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 21 | GNU General Public License for more details. |
| 22 | |
| 23 | You should have received a copy of the GNU General Public License |
| 24 | along with this program; if not, write to the Free Software |
| 25 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 26 | |
| 27 | /* For WINDOWS_NT */ |
| 28 | /* The original file generated returned different default scripts depending |
| 29 | on whether certain switches were set, but these switches pertain to the |
| 30 | Linux system and that particular version of coff. In the NT case, we |
| 31 | only determine if the subsystem is console or windows in order to select |
| 32 | the correct entry point by default. */ |
| 33 | |
| 34 | #include "bfd.h" |
| 35 | #include "sysdep.h" |
| 36 | #include "bfdlink.h" |
| 37 | #include "getopt.h" |
| 38 | #include "libiberty.h" |
| 39 | #include "ld.h" |
| 40 | #include "ldmain.h" |
| 41 | #include "ldexp.h" |
| 42 | #include "ldlang.h" |
| 43 | #include "ldfile.h" |
| 44 | #include "ldemul.h" |
| 45 | #include <ldgram.h> |
| 46 | #include "ldlex.h" |
| 47 | #include "ldmisc.h" |
| 48 | #include "ldctor.h" |
| 49 | #include "coff/internal.h" |
| 50 | #include "../bfd/libcoff.h" |
| 51 | |
| 52 | #define TARGET_IS_${EMULATION_NAME} |
| 53 | |
| 54 | static struct internal_extra_pe_aouthdr pe; |
| 55 | static int dll; |
| 56 | |
| 57 | extern const char *output_filename; |
| 58 | |
| 59 | static void |
| 60 | gld_${EMULATION_NAME}_before_parse (void) |
| 61 | { |
| 62 | const bfd_arch_info_type *arch = bfd_scan_arch ("${OUTPUT_ARCH}"); |
| 63 | if (arch) |
| 64 | { |
| 65 | ldfile_output_architecture = arch->arch; |
| 66 | ldfile_output_machine = arch->mach; |
| 67 | ldfile_output_machine_name = arch->printable_name; |
| 68 | } |
| 69 | else |
| 70 | ldfile_output_architecture = bfd_arch_${ARCH}; |
| 71 | output_filename = "a.exe"; |
| 72 | } |
| 73 | \f |
| 74 | /* PE format extra command line options. */ |
| 75 | |
| 76 | /* Used for setting flags in the PE header. */ |
| 77 | #define OPTION_BASE_FILE (300 + 1) |
| 78 | #define OPTION_DLL (OPTION_BASE_FILE + 1) |
| 79 | #define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1) |
| 80 | #define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1) |
| 81 | #define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1) |
| 82 | #define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1) |
| 83 | #define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1) |
| 84 | #define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1) |
| 85 | #define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1) |
| 86 | #define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1) |
| 87 | #define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1) |
| 88 | #define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1) |
| 89 | #define OPTION_SUBSYSTEM (OPTION_STACK + 1) |
| 90 | #define OPTION_HEAP (OPTION_SUBSYSTEM + 1) |
| 91 | |
| 92 | static void |
| 93 | gld${EMULATION_NAME}_add_options |
| 94 | (int ns ATTRIBUTE_UNUSED, char **shortopts ATTRIBUTE_UNUSED, int nl, |
| 95 | struct option **longopts, int nrl ATTRIBUTE_UNUSED, |
| 96 | struct option **really_longopts ATTRIBUTE_UNUSED) |
| 97 | { |
| 98 | static const struct option xtra_long[] = { |
| 99 | /* PE options */ |
| 100 | {"base-file", required_argument, NULL, OPTION_BASE_FILE}, |
| 101 | {"dll", no_argument, NULL, OPTION_DLL}, |
| 102 | {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT}, |
| 103 | {"heap", required_argument, NULL, OPTION_HEAP}, |
| 104 | {"image-base", required_argument, NULL, OPTION_IMAGE_BASE}, |
| 105 | {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION}, |
| 106 | {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION}, |
| 107 | {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION}, |
| 108 | {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION}, |
| 109 | {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION}, |
| 110 | {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION}, |
| 111 | {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT}, |
| 112 | {"stack", required_argument, NULL, OPTION_STACK}, |
| 113 | {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM}, |
| 114 | {NULL, no_argument, NULL, 0} |
| 115 | }; |
| 116 | |
| 117 | *longopts = (struct option *) |
| 118 | xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long)); |
| 119 | memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long)); |
| 120 | } |
| 121 | |
| 122 | |
| 123 | /* PE/WIN32; added routines to get the subsystem type, heap and/or stack |
| 124 | parameters which may be input from the command line */ |
| 125 | |
| 126 | typedef struct { |
| 127 | void *ptr; |
| 128 | int size; |
| 129 | int value; |
| 130 | char *symbol; |
| 131 | int inited; |
| 132 | } definfo; |
| 133 | |
| 134 | #define D(field,symbol,def) {&pe.field,sizeof(pe.field), def, symbol,0} |
| 135 | |
| 136 | static definfo init[] = |
| 137 | { |
| 138 | /* imagebase must be first */ |
| 139 | #define IMAGEBASEOFF 0 |
| 140 | D(ImageBase,"__image_base__", BEOS_EXE_IMAGE_BASE), |
| 141 | #define DLLOFF 1 |
| 142 | {&dll, sizeof(dll), 0, "__dll__", 0}, |
| 143 | D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT), |
| 144 | D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT), |
| 145 | D(MajorOperatingSystemVersion,"__major_os_version__", 4), |
| 146 | D(MinorOperatingSystemVersion,"__minor_os_version__", 0), |
| 147 | D(MajorImageVersion,"__major_image_version__", 1), |
| 148 | D(MinorImageVersion,"__minor_image_version__", 0), |
| 149 | D(MajorSubsystemVersion,"__major_subsystem_version__", 4), |
| 150 | D(MinorSubsystemVersion,"__minor_subsystem_version__", 0), |
| 151 | D(Subsystem,"__subsystem__", 3), |
| 152 | D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x2000000), |
| 153 | D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000), |
| 154 | D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000), |
| 155 | D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000), |
| 156 | D(LoaderFlags,"__loader_flags__", 0x0), |
| 157 | { NULL, 0, 0, NULL, 0 } |
| 158 | }; |
| 159 | |
| 160 | |
| 161 | static void |
| 162 | set_pe_name (char *name, long val) |
| 163 | { |
| 164 | int i; |
| 165 | /* Find the name and set it. */ |
| 166 | for (i = 0; init[i].ptr; i++) |
| 167 | { |
| 168 | if (strcmp (name, init[i].symbol) == 0) |
| 169 | { |
| 170 | init[i].value = val; |
| 171 | init[i].inited = 1; |
| 172 | return; |
| 173 | } |
| 174 | } |
| 175 | abort(); |
| 176 | } |
| 177 | |
| 178 | |
| 179 | static void |
| 180 | set_pe_subsystem (void) |
| 181 | { |
| 182 | const char *sver; |
| 183 | int len; |
| 184 | int i; |
| 185 | static const struct |
| 186 | { |
| 187 | const char *name; |
| 188 | const int value; |
| 189 | const char *entry; |
| 190 | } |
| 191 | v[] = |
| 192 | { |
| 193 | { "native", 1, "_NtProcessStartup" }, |
| 194 | { "windows", 2, "_WinMainCRTStartup" }, |
| 195 | { "wwindows", 2, "_wWinMainCRTStartup" }, |
| 196 | { "console", 3, "_mainCRTStartup" }, |
| 197 | { "wconsole", 3, "_wmainCRTStartup" }, |
| 198 | #if 0 |
| 199 | /* The Microsoft linker does not recognize this. */ |
| 200 | { "os2", 5, "" }, |
| 201 | #endif |
| 202 | { "posix", 7, "___PosixProcessStartup"}, |
| 203 | { 0, 0, 0 } |
| 204 | }; |
| 205 | |
| 206 | sver = strchr (optarg, ':'); |
| 207 | if (sver == NULL) |
| 208 | len = strlen (optarg); |
| 209 | else |
| 210 | { |
| 211 | char *end; |
| 212 | |
| 213 | len = sver - optarg; |
| 214 | set_pe_name ("__major_subsystem_version__", |
| 215 | strtoul (sver + 1, &end, 0)); |
| 216 | if (*end == '.') |
| 217 | set_pe_name ("__minor_subsystem_version__", |
| 218 | strtoul (end + 1, &end, 0)); |
| 219 | if (*end != '\0') |
| 220 | einfo ("%P: warning: bad version number in -subsystem option\n"); |
| 221 | } |
| 222 | |
| 223 | for (i = 0; v[i].name; i++) |
| 224 | { |
| 225 | if (strncmp (optarg, v[i].name, len) == 0 |
| 226 | && v[i].name[len] == '\0') |
| 227 | { |
| 228 | set_pe_name ("__subsystem__", v[i].value); |
| 229 | |
| 230 | /* If the subsystem is windows, we use a different entry |
| 231 | point. We also register the entry point as an undefined |
| 232 | symbol. from lang_add_entry() The reason we do |
| 233 | this is so that the user |
| 234 | doesn't have to because they would have to use the -u |
| 235 | switch if they were specifying an entry point other than |
| 236 | _mainCRTStartup. Specifically, if creating a windows |
| 237 | application, entry point _WinMainCRTStartup must be |
| 238 | specified. What I have found for non console |
| 239 | applications (entry not _mainCRTStartup) is that the .obj |
| 240 | that contains mainCRTStartup is brought in since it is |
| 241 | the first encountered in libc.lib and it has other |
| 242 | symbols in it which will be pulled in by the link |
| 243 | process. To avoid this, adding -u with the entry point |
| 244 | name specified forces the correct .obj to be used. We |
| 245 | can avoid making the user do this by always adding the |
| 246 | entry point name as an undefined symbol. */ |
| 247 | lang_add_entry (v[i].entry, 1); |
| 248 | |
| 249 | return; |
| 250 | } |
| 251 | } |
| 252 | einfo ("%P%F: invalid subsystem type %s\n", optarg); |
| 253 | } |
| 254 | |
| 255 | |
| 256 | static void |
| 257 | set_pe_value (char *name) |
| 258 | { |
| 259 | char *end; |
| 260 | set_pe_name (name, strtoul (optarg, &end, 0)); |
| 261 | if (end == optarg) |
| 262 | { |
| 263 | einfo ("%P%F: invalid hex number for PE parameter '%s'\n", optarg); |
| 264 | } |
| 265 | |
| 266 | optarg = end; |
| 267 | } |
| 268 | |
| 269 | static void |
| 270 | set_pe_stack_heap (char *resname, char *comname) |
| 271 | { |
| 272 | set_pe_value (resname); |
| 273 | if (*optarg == ',') |
| 274 | { |
| 275 | optarg++; |
| 276 | set_pe_value (comname); |
| 277 | } |
| 278 | else if (*optarg) |
| 279 | { |
| 280 | einfo ("%P%F: strange hex info for PE parameter '%s'\n", optarg); |
| 281 | } |
| 282 | } |
| 283 | |
| 284 | |
| 285 | static bfd_boolean |
| 286 | gld${EMULATION_NAME}_handle_option (int optc) |
| 287 | { |
| 288 | switch (optc) |
| 289 | { |
| 290 | default: |
| 291 | return FALSE; |
| 292 | |
| 293 | case OPTION_BASE_FILE: |
| 294 | link_info.base_file = fopen (optarg, FOPEN_WB); |
| 295 | if (link_info.base_file == NULL) |
| 296 | { |
| 297 | fprintf (stderr, "%s: Can't open base file %s\n", |
| 298 | program_name, optarg); |
| 299 | xexit (1); |
| 300 | } |
| 301 | break; |
| 302 | |
| 303 | /* PE options */ |
| 304 | case OPTION_HEAP: |
| 305 | set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__"); |
| 306 | break; |
| 307 | case OPTION_STACK: |
| 308 | set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__"); |
| 309 | break; |
| 310 | case OPTION_SUBSYSTEM: |
| 311 | set_pe_subsystem (); |
| 312 | break; |
| 313 | case OPTION_MAJOR_OS_VERSION: |
| 314 | set_pe_value ("__major_os_version__"); |
| 315 | break; |
| 316 | case OPTION_MINOR_OS_VERSION: |
| 317 | set_pe_value ("__minor_os_version__"); |
| 318 | break; |
| 319 | case OPTION_MAJOR_SUBSYSTEM_VERSION: |
| 320 | set_pe_value ("__major_subsystem_version__"); |
| 321 | break; |
| 322 | case OPTION_MINOR_SUBSYSTEM_VERSION: |
| 323 | set_pe_value ("__minor_subsystem_version__"); |
| 324 | break; |
| 325 | case OPTION_MAJOR_IMAGE_VERSION: |
| 326 | set_pe_value ("__major_image_version__"); |
| 327 | break; |
| 328 | case OPTION_MINOR_IMAGE_VERSION: |
| 329 | set_pe_value ("__minor_image_version__"); |
| 330 | break; |
| 331 | case OPTION_FILE_ALIGNMENT: |
| 332 | set_pe_value ("__file_alignment__"); |
| 333 | break; |
| 334 | case OPTION_SECTION_ALIGNMENT: |
| 335 | set_pe_value ("__section_alignment__"); |
| 336 | break; |
| 337 | case OPTION_DLL: |
| 338 | set_pe_name ("__dll__", 1); |
| 339 | break; |
| 340 | case OPTION_IMAGE_BASE: |
| 341 | set_pe_value ("__image_base__"); |
| 342 | break; |
| 343 | } |
| 344 | return TRUE; |
| 345 | } |
| 346 | \f |
| 347 | /* Assign values to the special symbols before the linker script is |
| 348 | read. */ |
| 349 | |
| 350 | static void |
| 351 | gld_${EMULATION_NAME}_set_symbols (void) |
| 352 | { |
| 353 | /* Run through and invent symbols for all the |
| 354 | names and insert the defaults. */ |
| 355 | int j; |
| 356 | lang_statement_list_type *save; |
| 357 | |
| 358 | if (!init[IMAGEBASEOFF].inited) |
| 359 | { |
| 360 | if (link_info.relocatable) |
| 361 | init[IMAGEBASEOFF].value = 0; |
| 362 | else if (init[DLLOFF].value) |
| 363 | init[IMAGEBASEOFF].value = BEOS_DLL_IMAGE_BASE; |
| 364 | else |
| 365 | init[IMAGEBASEOFF].value = BEOS_EXE_IMAGE_BASE; |
| 366 | } |
| 367 | |
| 368 | /* Don't do any symbol assignments if this is a relocatable link. */ |
| 369 | if (link_info.relocatable) |
| 370 | return; |
| 371 | |
| 372 | /* Glue the assignments into the abs section */ |
| 373 | save = stat_ptr; |
| 374 | |
| 375 | stat_ptr = &(abs_output_section->children); |
| 376 | |
| 377 | for (j = 0; init[j].ptr; j++) |
| 378 | { |
| 379 | long val = init[j].value; |
| 380 | lang_add_assignment (exp_assop ('=', init[j].symbol, exp_intop (val))); |
| 381 | if (init[j].size == sizeof(short)) |
| 382 | *(short *)init[j].ptr = val; |
| 383 | else if (init[j].size == sizeof(int)) |
| 384 | *(int *)init[j].ptr = val; |
| 385 | else if (init[j].size == sizeof(long)) |
| 386 | *(long *)init[j].ptr = val; |
| 387 | /* This might be a long long or other special type. */ |
| 388 | else if (init[j].size == sizeof(bfd_vma)) |
| 389 | *(bfd_vma *)init[j].ptr = val; |
| 390 | else abort(); |
| 391 | } |
| 392 | /* Restore the pointer. */ |
| 393 | stat_ptr = save; |
| 394 | |
| 395 | if (pe.FileAlignment > |
| 396 | pe.SectionAlignment) |
| 397 | { |
| 398 | einfo ("%P: warning, file alignment > section alignment.\n"); |
| 399 | } |
| 400 | } |
| 401 | |
| 402 | static void |
| 403 | gld_${EMULATION_NAME}_after_open (void) |
| 404 | { |
| 405 | /* Pass the wacky PE command line options into the output bfd. |
| 406 | FIXME: This should be done via a function, rather than by |
| 407 | including an internal BFD header. */ |
| 408 | if (!coff_data(output_bfd)->pe) |
| 409 | { |
| 410 | einfo ("%F%P: PE operations on non PE file.\n"); |
| 411 | } |
| 412 | |
| 413 | pe_data(output_bfd)->pe_opthdr = pe; |
| 414 | pe_data(output_bfd)->dll = init[DLLOFF].value; |
| 415 | |
| 416 | } |
| 417 | \f |
| 418 | /* Callback functions for qsort in sort_sections. */ |
| 419 | |
| 420 | static int |
| 421 | sort_by_file_name (const void *a, const void *b) |
| 422 | { |
| 423 | const lang_statement_union_type *const *ra = a; |
| 424 | const lang_statement_union_type *const *rb = b; |
| 425 | int i, a_sec, b_sec; |
| 426 | |
| 427 | i = strcmp ((*ra)->input_section.ifile->the_bfd->my_archive->filename, |
| 428 | (*rb)->input_section.ifile->the_bfd->my_archive->filename); |
| 429 | if (i != 0) |
| 430 | return i; |
| 431 | |
| 432 | i = strcmp ((*ra)->input_section.ifile->filename, |
| 433 | (*rb)->input_section.ifile->filename); |
| 434 | if (i != 0) |
| 435 | return i; |
| 436 | /* the tail idata4/5 are the only ones without relocs to an |
| 437 | idata$6 section unless we are importing by ordinal, |
| 438 | so sort them to last to terminate the IAT |
| 439 | and HNT properly. if no reloc this one is import by ordinal |
| 440 | so we have to sort by section contents */ |
| 441 | |
| 442 | if ( ((*ra)->input_section.section->reloc_count + (*rb)->input_section.section->reloc_count) ) |
| 443 | { |
| 444 | i = (((*ra)->input_section.section->reloc_count > |
| 445 | (*rb)->input_section.section->reloc_count) ? -1 : 0); |
| 446 | if ( i != 0) |
| 447 | return i; |
| 448 | |
| 449 | return (((*ra)->input_section.section->reloc_count > |
| 450 | (*rb)->input_section.section->reloc_count) ? 0 : 1); |
| 451 | } |
| 452 | else |
| 453 | { |
| 454 | if ( (strcmp( (*ra)->input_section.section->name, ".idata$6") == 0) ) |
| 455 | return 0; /* don't sort .idata$6 or .idata$7 FIXME dlltool eliminate .idata$7 */ |
| 456 | |
| 457 | if (! bfd_get_section_contents ((*ra)->input_section.ifile->the_bfd, |
| 458 | (*ra)->input_section.section, &a_sec, (file_ptr) 0, (bfd_size_type)sizeof(a_sec))) |
| 459 | einfo ("%F%B: Can't read contents of section .idata: %E\n", |
| 460 | (*ra)->input_section.ifile->the_bfd); |
| 461 | |
| 462 | if (! bfd_get_section_contents ((*rb)->input_section.ifile->the_bfd, |
| 463 | (*rb)->input_section.section, &b_sec, (file_ptr) 0, (bfd_size_type)sizeof(b_sec) )) |
| 464 | einfo ("%F%B: Can't read contents of section .idata: %E\n", |
| 465 | (*rb)->input_section.ifile->the_bfd); |
| 466 | |
| 467 | i = ((a_sec < b_sec) ? -1 : 0); |
| 468 | if ( i != 0) |
| 469 | return i; |
| 470 | return ((a_sec < b_sec) ? 0 : 1); |
| 471 | } |
| 472 | return 0; |
| 473 | } |
| 474 | |
| 475 | static int |
| 476 | sort_by_section_name (const void *a, const void *b) |
| 477 | { |
| 478 | const lang_statement_union_type *const *ra = a; |
| 479 | const lang_statement_union_type *const *rb = b; |
| 480 | int i; |
| 481 | i = strcmp ((*ra)->input_section.section->name, |
| 482 | (*rb)->input_section.section->name); |
| 483 | /* this is a hack to make .stab and .stabstr last, so we don't have |
| 484 | to fix strip/objcopy for .reloc sections. |
| 485 | FIXME stripping images with a .rsrc section still needs to be fixed */ |
| 486 | if ( i != 0) |
| 487 | { |
| 488 | if ((strncmp ((*ra)->input_section.section->name, ".stab", 5) == 0) |
| 489 | && (strncmp ((*rb)->input_section.section->name, ".stab", 5) != 0)) |
| 490 | return 1; |
| 491 | return i; |
| 492 | } |
| 493 | return i; |
| 494 | } |
| 495 | |
| 496 | /* Subroutine of sort_sections to a contiguous subset of a list of sections. |
| 497 | NEXT_AFTER is the element after the last one to sort. |
| 498 | The result is a pointer to the last element's "next" pointer. */ |
| 499 | |
| 500 | static lang_statement_union_type ** |
| 501 | sort_sections_1 (lang_statement_union_type **startptr, |
| 502 | lang_statement_union_type *next_after, |
| 503 | int count, |
| 504 | int (*sort_func) (const void *, const void *)) |
| 505 | { |
| 506 | lang_statement_union_type **vec; |
| 507 | lang_statement_union_type *p; |
| 508 | int i; |
| 509 | lang_statement_union_type **ret; |
| 510 | |
| 511 | if (count == 0) |
| 512 | return startptr; |
| 513 | |
| 514 | vec = ((lang_statement_union_type **) |
| 515 | xmalloc (count * sizeof (lang_statement_union_type *))); |
| 516 | |
| 517 | for (p = *startptr, i = 0; i < count; i++, p = p->header.next) |
| 518 | vec[i] = p; |
| 519 | |
| 520 | qsort (vec, count, sizeof (vec[0]), sort_func); |
| 521 | |
| 522 | /* Fill in the next pointers again. */ |
| 523 | *startptr = vec[0]; |
| 524 | for (i = 0; i < count - 1; i++) |
| 525 | vec[i]->header.next = vec[i + 1]; |
| 526 | vec[i]->header.next = next_after; |
| 527 | ret = &vec[i]->header.next; |
| 528 | free (vec); |
| 529 | return ret; |
| 530 | } |
| 531 | |
| 532 | /* Sort the .idata\$foo input sections of archives into filename order. |
| 533 | The reason is so dlltool can arrange to have the pe dll import information |
| 534 | generated correctly - the head of the list goes into dh.o, the tail into |
| 535 | dt.o, and the guts into ds[nnnn].o. Note that this is only needed for the |
| 536 | .idata section. |
| 537 | FIXME: This may no longer be necessary with grouped sections. Instead of |
| 538 | sorting on dh.o, ds[nnnn].o, dt.o, one could, for example, have dh.o use |
| 539 | .idata\$4h, have ds[nnnn].o use .idata\$4s[nnnn], and have dt.o use .idata\$4t. |
| 540 | This would have to be elaborated upon to handle multiple dll's |
| 541 | [assuming such an eloboration is possible of course]. |
| 542 | |
| 543 | We also sort sections in '\$' wild statements. These are created by the |
| 544 | place_orphans routine to implement grouped sections. */ |
| 545 | |
| 546 | static void |
| 547 | sort_sections (lang_statement_union_type *s) |
| 548 | { |
| 549 | for (; s ; s = s->header.next) |
| 550 | switch (s->header.type) |
| 551 | { |
| 552 | case lang_output_section_statement_enum: |
| 553 | sort_sections (s->output_section_statement.children.head); |
| 554 | break; |
| 555 | case lang_wild_statement_enum: |
| 556 | { |
| 557 | lang_statement_union_type **p = &s->wild_statement.children.head; |
| 558 | struct wildcard_list *sec; |
| 559 | |
| 560 | for (sec = s->wild_statement.section_list; sec; sec = sec->next) |
| 561 | { |
| 562 | /* Is this the .idata section? */ |
| 563 | if (sec->spec.name != NULL |
| 564 | && strncmp (sec->spec.name, ".idata", 6) == 0) |
| 565 | { |
| 566 | /* Sort the children. We want to sort any objects in |
| 567 | the same archive. In order to handle the case of |
| 568 | including a single archive multiple times, we sort |
| 569 | all the children by archive name and then by object |
| 570 | name. After sorting them, we re-thread the pointer |
| 571 | chain. */ |
| 572 | |
| 573 | while (*p) |
| 574 | { |
| 575 | lang_statement_union_type *start = *p; |
| 576 | if (start->header.type != lang_input_section_enum |
| 577 | || !start->input_section.ifile->the_bfd->my_archive) |
| 578 | p = &(start->header.next); |
| 579 | else |
| 580 | { |
| 581 | lang_statement_union_type *end; |
| 582 | int count; |
| 583 | |
| 584 | for (end = start, count = 0; |
| 585 | end && (end->header.type |
| 586 | == lang_input_section_enum); |
| 587 | end = end->header.next) |
| 588 | count++; |
| 589 | |
| 590 | p = sort_sections_1 (p, end, count, |
| 591 | sort_by_file_name); |
| 592 | } |
| 593 | } |
| 594 | break; |
| 595 | } |
| 596 | |
| 597 | /* If this is a collection of grouped sections, sort them. |
| 598 | The linker script must explicitly mention "*(.foo\$)" or |
| 599 | "*(.foo\$*)". Don't sort them if \$ is not the last |
| 600 | character (not sure if this is really useful, but it |
| 601 | allows explicitly mentioning some \$ sections and letting |
| 602 | the linker handle the rest). */ |
| 603 | if (sec->spec.name != NULL) |
| 604 | { |
| 605 | char *q = strchr (sec->spec.name, '\$'); |
| 606 | |
| 607 | if (q != NULL |
| 608 | && (q[1] == '\0' |
| 609 | || (q[1] == '*' && q[2] == '\0'))) |
| 610 | { |
| 611 | lang_statement_union_type *end; |
| 612 | int count; |
| 613 | |
| 614 | for (end = *p, count = 0; end; end = end->header.next) |
| 615 | { |
| 616 | if (end->header.type != lang_input_section_enum) |
| 617 | abort (); |
| 618 | count++; |
| 619 | } |
| 620 | (void) sort_sections_1 (p, end, count, |
| 621 | sort_by_section_name); |
| 622 | } |
| 623 | break; |
| 624 | } |
| 625 | } |
| 626 | } |
| 627 | break; |
| 628 | default: |
| 629 | break; |
| 630 | } |
| 631 | } |
| 632 | |
| 633 | static void |
| 634 | gld_${EMULATION_NAME}_before_allocation (void) |
| 635 | { |
| 636 | extern lang_statement_list_type *stat_ptr; |
| 637 | |
| 638 | #ifdef TARGET_IS_ppcpe |
| 639 | /* Here we rummage through the found bfds to collect toc information */ |
| 640 | { |
| 641 | LANG_FOR_EACH_INPUT_STATEMENT (is) |
| 642 | { |
| 643 | if (!ppc_process_before_allocation(is->the_bfd, &link_info)) |
| 644 | { |
| 645 | einfo("Errors encountered processing file %s\n", is->filename); |
| 646 | } |
| 647 | } |
| 648 | } |
| 649 | |
| 650 | /* We have seen it all. Allocate it, and carry on */ |
| 651 | ppc_allocate_toc_section (&link_info); |
| 652 | #else |
| 653 | #ifdef TARGET_IS_armpe |
| 654 | /* FIXME: we should be able to set the size of the interworking stub |
| 655 | section. |
| 656 | |
| 657 | Here we rummage through the found bfds to collect glue |
| 658 | information. FIXME: should this be based on a command line |
| 659 | option? krk@cygnus.com */ |
| 660 | { |
| 661 | LANG_FOR_EACH_INPUT_STATEMENT (is) |
| 662 | { |
| 663 | if (!arm_process_before_allocation (is->the_bfd, & link_info)) |
| 664 | { |
| 665 | einfo ("Errors encountered processing file %s", is->filename); |
| 666 | } |
| 667 | } |
| 668 | } |
| 669 | |
| 670 | /* We have seen it all. Allocate it, and carry on */ |
| 671 | arm_allocate_interworking_sections (& link_info); |
| 672 | #endif /* TARGET_IS_armpe */ |
| 673 | #endif /* TARGET_IS_ppcpe */ |
| 674 | |
| 675 | sort_sections (stat_ptr->head); |
| 676 | } |
| 677 | \f |
| 678 | /* Place an orphan section. We use this to put sections with a '\$' in them |
| 679 | into the right place. Any section with a '\$' in them (e.g. .text\$foo) |
| 680 | gets mapped to the output section with everything from the '\$' on stripped |
| 681 | (e.g. .text). |
| 682 | See the Microsoft Portable Executable and Common Object File Format |
| 683 | Specification 4.1, section 4.2, Grouped Sections. |
| 684 | |
| 685 | FIXME: This is now handled by the linker script using wildcards, |
| 686 | but I'm leaving this here in case we want to enable it for sections |
| 687 | which are not mentioned in the linker script. */ |
| 688 | |
| 689 | /*ARGSUSED*/ |
| 690 | static bfd_boolean |
| 691 | gld${EMULATION_NAME}_place_orphan (lang_input_statement_type *file, asection *s) |
| 692 | { |
| 693 | const char *secname; |
| 694 | char *output_secname, *ps; |
| 695 | lang_output_section_statement_type *os; |
| 696 | lang_statement_union_type *l; |
| 697 | |
| 698 | if ((s->flags & SEC_ALLOC) == 0) |
| 699 | return FALSE; |
| 700 | |
| 701 | /* Don't process grouped sections unless doing a final link. |
| 702 | If they're marked as COMDAT sections, we don't want .text\$foo to |
| 703 | end up in .text and then have .text disappear because it's marked |
| 704 | link-once-discard. */ |
| 705 | if (link_info.relocatable) |
| 706 | return FALSE; |
| 707 | |
| 708 | secname = bfd_get_section_name (s->owner, s); |
| 709 | |
| 710 | /* Everything from the '\$' on gets deleted so don't allow '\$' as the |
| 711 | first character. */ |
| 712 | if (*secname == '\$') |
| 713 | einfo ("%P%F: section %s has '\$' as first character\n", secname); |
| 714 | if (strchr (secname + 1, '\$') == NULL) |
| 715 | return FALSE; |
| 716 | |
| 717 | /* Look up the output section. The Microsoft specs say sections names in |
| 718 | image files never contain a '\$'. Fortunately, lang_..._lookup creates |
| 719 | the section if it doesn't exist. */ |
| 720 | output_secname = xstrdup (secname); |
| 721 | ps = strchr (output_secname + 1, '\$'); |
| 722 | *ps = 0; |
| 723 | os = lang_output_section_statement_lookup (output_secname); |
| 724 | |
| 725 | /* Find the '\$' wild statement for this section. We currently require the |
| 726 | linker script to explicitly mention "*(.foo\$)". |
| 727 | FIXME: ppcpe.sc has .CRT\$foo in the .rdata section. According to the |
| 728 | Microsoft docs this isn't correct so it's not (currently) handled. */ |
| 729 | |
| 730 | ps[0] = '\$'; |
| 731 | ps[1] = 0; |
| 732 | for (l = os->children.head; l; l = l->header.next) |
| 733 | if (l->header.type == lang_wild_statement_enum) |
| 734 | { |
| 735 | struct wildcard_list *sec; |
| 736 | |
| 737 | for (sec = l->wild_statement.section_list; sec; sec = sec->next) |
| 738 | if (sec->spec.name && strcmp (sec->spec.name, output_secname) == 0) |
| 739 | break; |
| 740 | if (sec) |
| 741 | break; |
| 742 | } |
| 743 | ps[0] = 0; |
| 744 | if (l == NULL) |
| 745 | #if 1 |
| 746 | einfo ("%P%F: *(%s\$) missing from linker script\n", output_secname); |
| 747 | #else /* FIXME: This block is untried. It exists to convey the intent, |
| 748 | should one decide to not require *(.foo\$) to appear in the linker |
| 749 | script. */ |
| 750 | { |
| 751 | lang_wild_statement_type *new; |
| 752 | struct wildcard_list *tmp; |
| 753 | |
| 754 | tmp = (struct wildcard_list *) xmalloc (sizeof *tmp); |
| 755 | tmp->next = NULL; |
| 756 | tmp->spec.name = xmalloc (strlen (output_secname) + 2); |
| 757 | sprintf (tmp->spec.name, "%s\$", output_secname); |
| 758 | tmp->spec.exclude_name_list = NULL; |
| 759 | tmp->sorted = FALSE; |
| 760 | new = new_stat (lang_wild_statement, &os->children); |
| 761 | new->filename = NULL; |
| 762 | new->filenames_sorted = FALSE; |
| 763 | new->section_list = tmp; |
| 764 | new->keep_sections = FALSE; |
| 765 | lang_list_init (&new->children); |
| 766 | l = new; |
| 767 | } |
| 768 | #endif |
| 769 | |
| 770 | /* Link the input section in and we're done for now. |
| 771 | The sections still have to be sorted, but that has to wait until |
| 772 | all such sections have been processed by us. The sorting is done by |
| 773 | sort_sections. */ |
| 774 | lang_add_section (&l->wild_statement.children, s, os, file); |
| 775 | |
| 776 | return TRUE; |
| 777 | } |
| 778 | \f |
| 779 | static char * |
| 780 | gld_${EMULATION_NAME}_get_script (int *isfile) |
| 781 | EOF |
| 782 | # Scripts compiled in. |
| 783 | # sed commands to quote an ld script as a C string. |
| 784 | sc="-f stringify.sed" |
| 785 | |
| 786 | cat >>e${EMULATION_NAME}.c <<EOF |
| 787 | { |
| 788 | *isfile = 0; |
| 789 | |
| 790 | if (link_info.relocatable && config.build_constructors) |
| 791 | return |
| 792 | EOF |
| 793 | sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c |
| 794 | echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c |
| 795 | sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c |
| 796 | echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c |
| 797 | sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c |
| 798 | echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c |
| 799 | sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c |
| 800 | echo ' ; else return' >> e${EMULATION_NAME}.c |
| 801 | sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c |
| 802 | echo '; }' >> e${EMULATION_NAME}.c |
| 803 | |
| 804 | cat >>e${EMULATION_NAME}.c <<EOF |
| 805 | |
| 806 | |
| 807 | struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = |
| 808 | { |
| 809 | gld_${EMULATION_NAME}_before_parse, |
| 810 | syslib_default, |
| 811 | hll_default, |
| 812 | after_parse_default, |
| 813 | gld_${EMULATION_NAME}_after_open, |
| 814 | after_allocation_default, |
| 815 | set_output_arch_default, |
| 816 | ldemul_default_target, |
| 817 | gld_${EMULATION_NAME}_before_allocation, |
| 818 | gld_${EMULATION_NAME}_get_script, |
| 819 | "${EMULATION_NAME}", |
| 820 | "${OUTPUT_FORMAT}", |
| 821 | NULL, /* finish */ |
| 822 | NULL, /* create output section statements */ |
| 823 | NULL, /* open dynamic archive */ |
| 824 | gld${EMULATION_NAME}_place_orphan, |
| 825 | gld_${EMULATION_NAME}_set_symbols, |
| 826 | NULL, /* parse_args */ |
| 827 | gld${EMULATION_NAME}_add_options, |
| 828 | gld${EMULATION_NAME}_handle_option, |
| 829 | NULL, /* unrecognized file */ |
| 830 | NULL, /* list options */ |
| 831 | NULL, /* recognized file */ |
| 832 | NULL, /* find_potential_libraries */ |
| 833 | NULL /* new_vers_pattern */ |
| 834 | }; |
| 835 | EOF |