| 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 | fragment <<EOF |
| 9 | /* This file is part of GLD, the Gnu Linker. |
| 10 | Copyright (C) 1995-2016 Free Software Foundation, Inc. |
| 11 | |
| 12 | This file is part of the GNU Binutils. |
| 13 | |
| 14 | This program is free software; you can redistribute it and/or modify |
| 15 | it under the terms of the GNU General Public License as published by |
| 16 | the Free Software Foundation; either version 3 of the License, or |
| 17 | (at your option) any later version. |
| 18 | |
| 19 | This program is distributed in the hope that it will be useful, |
| 20 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | GNU General Public License for more details. |
| 23 | |
| 24 | You should have received a copy of the GNU General Public License |
| 25 | along with this program; if not, write to the Free Software |
| 26 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 27 | MA 02110-1301, USA. */ |
| 28 | |
| 29 | |
| 30 | /* For WINDOWS_NT */ |
| 31 | /* The original file generated returned different default scripts depending |
| 32 | on whether certain switches were set, but these switches pertain to the |
| 33 | Linux system and that particular version of coff. In the NT case, we |
| 34 | only determine if the subsystem is console or windows in order to select |
| 35 | the correct entry point by default. */ |
| 36 | |
| 37 | #include "sysdep.h" |
| 38 | #include "bfd.h" |
| 39 | #include "bfdlink.h" |
| 40 | #include "getopt.h" |
| 41 | #include "libiberty.h" |
| 42 | #include "filenames.h" |
| 43 | #include "ld.h" |
| 44 | #include "ldmain.h" |
| 45 | #include "ldexp.h" |
| 46 | #include "ldlang.h" |
| 47 | #include "ldfile.h" |
| 48 | #include "ldemul.h" |
| 49 | #include <ldgram.h> |
| 50 | #include "ldlex.h" |
| 51 | #include "ldmisc.h" |
| 52 | #include "ldctor.h" |
| 53 | #include "coff/internal.h" |
| 54 | #include "../bfd/libcoff.h" |
| 55 | |
| 56 | #define TARGET_IS_${EMULATION_NAME} |
| 57 | |
| 58 | static struct internal_extra_pe_aouthdr pe; |
| 59 | static int dll; |
| 60 | |
| 61 | extern const char *output_filename; |
| 62 | |
| 63 | static void |
| 64 | gld_${EMULATION_NAME}_before_parse (void) |
| 65 | { |
| 66 | ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`); |
| 67 | output_filename = "a.exe"; |
| 68 | } |
| 69 | \f |
| 70 | /* PE format extra command line options. */ |
| 71 | |
| 72 | /* Used for setting flags in the PE header. */ |
| 73 | #define OPTION_BASE_FILE (300 + 1) |
| 74 | #define OPTION_DLL (OPTION_BASE_FILE + 1) |
| 75 | #define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1) |
| 76 | #define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1) |
| 77 | #define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1) |
| 78 | #define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1) |
| 79 | #define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1) |
| 80 | #define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1) |
| 81 | #define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1) |
| 82 | #define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1) |
| 83 | #define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1) |
| 84 | #define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1) |
| 85 | #define OPTION_SUBSYSTEM (OPTION_STACK + 1) |
| 86 | #define OPTION_HEAP (OPTION_SUBSYSTEM + 1) |
| 87 | |
| 88 | static void |
| 89 | gld${EMULATION_NAME}_add_options |
| 90 | (int ns ATTRIBUTE_UNUSED, char **shortopts ATTRIBUTE_UNUSED, int nl, |
| 91 | struct option **longopts, int nrl ATTRIBUTE_UNUSED, |
| 92 | struct option **really_longopts ATTRIBUTE_UNUSED) |
| 93 | { |
| 94 | static const struct option xtra_long[] = { |
| 95 | /* PE options */ |
| 96 | {"base-file", required_argument, NULL, OPTION_BASE_FILE}, |
| 97 | {"dll", no_argument, NULL, OPTION_DLL}, |
| 98 | {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT}, |
| 99 | {"heap", required_argument, NULL, OPTION_HEAP}, |
| 100 | {"image-base", required_argument, NULL, OPTION_IMAGE_BASE}, |
| 101 | {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION}, |
| 102 | {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION}, |
| 103 | {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION}, |
| 104 | {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION}, |
| 105 | {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION}, |
| 106 | {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION}, |
| 107 | {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT}, |
| 108 | {"stack", required_argument, NULL, OPTION_STACK}, |
| 109 | {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM}, |
| 110 | {NULL, no_argument, NULL, 0} |
| 111 | }; |
| 112 | |
| 113 | *longopts = (struct option *) |
| 114 | xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long)); |
| 115 | memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long)); |
| 116 | } |
| 117 | |
| 118 | |
| 119 | /* PE/WIN32; added routines to get the subsystem type, heap and/or stack |
| 120 | parameters which may be input from the command line */ |
| 121 | |
| 122 | typedef struct { |
| 123 | void *ptr; |
| 124 | int size; |
| 125 | int value; |
| 126 | char *symbol; |
| 127 | int inited; |
| 128 | } definfo; |
| 129 | |
| 130 | #define D(field,symbol,def) {&pe.field,sizeof(pe.field), def, symbol,0} |
| 131 | |
| 132 | static definfo init[] = |
| 133 | { |
| 134 | /* imagebase must be first */ |
| 135 | #define IMAGEBASEOFF 0 |
| 136 | D(ImageBase,"__image_base__", BEOS_EXE_IMAGE_BASE), |
| 137 | #define DLLOFF 1 |
| 138 | {&dll, sizeof(dll), 0, "__dll__", 0}, |
| 139 | D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT), |
| 140 | D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT), |
| 141 | D(MajorOperatingSystemVersion,"__major_os_version__", 4), |
| 142 | D(MinorOperatingSystemVersion,"__minor_os_version__", 0), |
| 143 | D(MajorImageVersion,"__major_image_version__", 1), |
| 144 | D(MinorImageVersion,"__minor_image_version__", 0), |
| 145 | D(MajorSubsystemVersion,"__major_subsystem_version__", 4), |
| 146 | D(MinorSubsystemVersion,"__minor_subsystem_version__", 0), |
| 147 | D(Subsystem,"__subsystem__", 3), |
| 148 | D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x2000000), |
| 149 | D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000), |
| 150 | D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000), |
| 151 | D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000), |
| 152 | D(LoaderFlags,"__loader_flags__", 0x0), |
| 153 | { NULL, 0, 0, NULL, 0 } |
| 154 | }; |
| 155 | |
| 156 | |
| 157 | static void |
| 158 | set_pe_name (char *name, long val) |
| 159 | { |
| 160 | int i; |
| 161 | /* Find the name and set it. */ |
| 162 | for (i = 0; init[i].ptr; i++) |
| 163 | { |
| 164 | if (strcmp (name, init[i].symbol) == 0) |
| 165 | { |
| 166 | init[i].value = val; |
| 167 | init[i].inited = 1; |
| 168 | return; |
| 169 | } |
| 170 | } |
| 171 | abort(); |
| 172 | } |
| 173 | |
| 174 | |
| 175 | static void |
| 176 | set_pe_subsystem (void) |
| 177 | { |
| 178 | const char *sver; |
| 179 | int len; |
| 180 | int i; |
| 181 | static const struct |
| 182 | { |
| 183 | const char *name; |
| 184 | const int value; |
| 185 | const char *entry; |
| 186 | } |
| 187 | v[] = |
| 188 | { |
| 189 | { "native", 1, "_NtProcessStartup" }, |
| 190 | { "windows", 2, "_WinMainCRTStartup" }, |
| 191 | { "wwindows", 2, "_wWinMainCRTStartup" }, |
| 192 | { "console", 3, "_mainCRTStartup" }, |
| 193 | { "wconsole", 3, "_wmainCRTStartup" }, |
| 194 | { "posix", 7, "___PosixProcessStartup"}, |
| 195 | { 0, 0, 0 } |
| 196 | }; |
| 197 | |
| 198 | sver = strchr (optarg, ':'); |
| 199 | if (sver == NULL) |
| 200 | len = strlen (optarg); |
| 201 | else |
| 202 | { |
| 203 | char *end; |
| 204 | |
| 205 | len = sver - optarg; |
| 206 | set_pe_name ("__major_subsystem_version__", |
| 207 | strtoul (sver + 1, &end, 0)); |
| 208 | if (*end == '.') |
| 209 | set_pe_name ("__minor_subsystem_version__", |
| 210 | strtoul (end + 1, &end, 0)); |
| 211 | if (*end != '\0') |
| 212 | einfo ("%P: warning: bad version number in -subsystem option\n"); |
| 213 | } |
| 214 | |
| 215 | for (i = 0; v[i].name; i++) |
| 216 | { |
| 217 | if (strncmp (optarg, v[i].name, len) == 0 |
| 218 | && v[i].name[len] == '\0') |
| 219 | { |
| 220 | set_pe_name ("__subsystem__", v[i].value); |
| 221 | |
| 222 | /* If the subsystem is windows, we use a different entry |
| 223 | point. */ |
| 224 | lang_default_entry (v[i].entry); |
| 225 | |
| 226 | return; |
| 227 | } |
| 228 | } |
| 229 | einfo ("%P%F: invalid subsystem type %s\n", optarg); |
| 230 | } |
| 231 | |
| 232 | |
| 233 | static void |
| 234 | set_pe_value (char *name) |
| 235 | { |
| 236 | char *end; |
| 237 | set_pe_name (name, strtoul (optarg, &end, 0)); |
| 238 | if (end == optarg) |
| 239 | { |
| 240 | einfo ("%P%F: invalid hex number for PE parameter '%s'\n", optarg); |
| 241 | } |
| 242 | |
| 243 | optarg = end; |
| 244 | } |
| 245 | |
| 246 | static void |
| 247 | set_pe_stack_heap (char *resname, char *comname) |
| 248 | { |
| 249 | set_pe_value (resname); |
| 250 | if (*optarg == ',') |
| 251 | { |
| 252 | optarg++; |
| 253 | set_pe_value (comname); |
| 254 | } |
| 255 | else if (*optarg) |
| 256 | { |
| 257 | einfo ("%P%F: strange hex info for PE parameter '%s'\n", optarg); |
| 258 | } |
| 259 | } |
| 260 | |
| 261 | |
| 262 | static bfd_boolean |
| 263 | gld${EMULATION_NAME}_handle_option (int optc) |
| 264 | { |
| 265 | switch (optc) |
| 266 | { |
| 267 | default: |
| 268 | return FALSE; |
| 269 | |
| 270 | case OPTION_BASE_FILE: |
| 271 | link_info.base_file = fopen (optarg, FOPEN_WB); |
| 272 | if (link_info.base_file == NULL) |
| 273 | einfo (_("%F%P: cannot open base file %s\n"), optarg); |
| 274 | break; |
| 275 | |
| 276 | /* PE options */ |
| 277 | case OPTION_HEAP: |
| 278 | set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__"); |
| 279 | break; |
| 280 | case OPTION_STACK: |
| 281 | set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__"); |
| 282 | break; |
| 283 | case OPTION_SUBSYSTEM: |
| 284 | set_pe_subsystem (); |
| 285 | break; |
| 286 | case OPTION_MAJOR_OS_VERSION: |
| 287 | set_pe_value ("__major_os_version__"); |
| 288 | break; |
| 289 | case OPTION_MINOR_OS_VERSION: |
| 290 | set_pe_value ("__minor_os_version__"); |
| 291 | break; |
| 292 | case OPTION_MAJOR_SUBSYSTEM_VERSION: |
| 293 | set_pe_value ("__major_subsystem_version__"); |
| 294 | break; |
| 295 | case OPTION_MINOR_SUBSYSTEM_VERSION: |
| 296 | set_pe_value ("__minor_subsystem_version__"); |
| 297 | break; |
| 298 | case OPTION_MAJOR_IMAGE_VERSION: |
| 299 | set_pe_value ("__major_image_version__"); |
| 300 | break; |
| 301 | case OPTION_MINOR_IMAGE_VERSION: |
| 302 | set_pe_value ("__minor_image_version__"); |
| 303 | break; |
| 304 | case OPTION_FILE_ALIGNMENT: |
| 305 | set_pe_value ("__file_alignment__"); |
| 306 | break; |
| 307 | case OPTION_SECTION_ALIGNMENT: |
| 308 | set_pe_value ("__section_alignment__"); |
| 309 | break; |
| 310 | case OPTION_DLL: |
| 311 | set_pe_name ("__dll__", 1); |
| 312 | break; |
| 313 | case OPTION_IMAGE_BASE: |
| 314 | set_pe_value ("__image_base__"); |
| 315 | break; |
| 316 | } |
| 317 | return TRUE; |
| 318 | } |
| 319 | \f |
| 320 | /* Assign values to the special symbols before the linker script is |
| 321 | read. */ |
| 322 | |
| 323 | static void |
| 324 | gld_${EMULATION_NAME}_set_symbols (void) |
| 325 | { |
| 326 | /* Run through and invent symbols for all the |
| 327 | names and insert the defaults. */ |
| 328 | int j; |
| 329 | |
| 330 | if (!init[IMAGEBASEOFF].inited) |
| 331 | { |
| 332 | if (bfd_link_relocatable (&link_info)) |
| 333 | init[IMAGEBASEOFF].value = 0; |
| 334 | else if (init[DLLOFF].value) |
| 335 | init[IMAGEBASEOFF].value = BEOS_DLL_IMAGE_BASE; |
| 336 | else |
| 337 | init[IMAGEBASEOFF].value = BEOS_EXE_IMAGE_BASE; |
| 338 | } |
| 339 | |
| 340 | /* Don't do any symbol assignments if this is a relocatable link. */ |
| 341 | if (bfd_link_relocatable (&link_info)) |
| 342 | return; |
| 343 | |
| 344 | /* Glue the assignments into the abs section */ |
| 345 | push_stat_ptr (&abs_output_section->children); |
| 346 | |
| 347 | for (j = 0; init[j].ptr; j++) |
| 348 | { |
| 349 | long val = init[j].value; |
| 350 | lang_add_assignment (exp_assign (init[j].symbol, exp_intop (val), |
| 351 | FALSE)); |
| 352 | if (init[j].size == sizeof(short)) |
| 353 | *(short *)init[j].ptr = val; |
| 354 | else if (init[j].size == sizeof(int)) |
| 355 | *(int *)init[j].ptr = val; |
| 356 | else if (init[j].size == sizeof(long)) |
| 357 | *(long *)init[j].ptr = val; |
| 358 | /* This might be a long long or other special type. */ |
| 359 | else if (init[j].size == sizeof(bfd_vma)) |
| 360 | *(bfd_vma *)init[j].ptr = val; |
| 361 | else abort(); |
| 362 | } |
| 363 | /* Restore the pointer. */ |
| 364 | pop_stat_ptr (); |
| 365 | |
| 366 | if (pe.FileAlignment > |
| 367 | pe.SectionAlignment) |
| 368 | { |
| 369 | einfo ("%P: warning, file alignment > section alignment.\n"); |
| 370 | } |
| 371 | } |
| 372 | |
| 373 | static void |
| 374 | gld_${EMULATION_NAME}_after_open (void) |
| 375 | { |
| 376 | after_open_default (); |
| 377 | |
| 378 | /* Pass the wacky PE command line options into the output bfd. |
| 379 | FIXME: This should be done via a function, rather than by |
| 380 | including an internal BFD header. */ |
| 381 | if (!coff_data(link_info.output_bfd)->pe) |
| 382 | { |
| 383 | einfo ("%F%P: PE operations on non PE file.\n"); |
| 384 | } |
| 385 | |
| 386 | pe_data(link_info.output_bfd)->pe_opthdr = pe; |
| 387 | pe_data(link_info.output_bfd)->dll = init[DLLOFF].value; |
| 388 | |
| 389 | } |
| 390 | \f |
| 391 | /* Callback functions for qsort in sort_sections. */ |
| 392 | |
| 393 | static int |
| 394 | sort_by_file_name (const void *a, const void *b) |
| 395 | { |
| 396 | const lang_statement_union_type *const *ra = a; |
| 397 | const lang_statement_union_type *const *rb = b; |
| 398 | int i, a_sec, b_sec; |
| 399 | |
| 400 | i = filename_cmp ((*ra)->input_section.section->owner->my_archive->filename, |
| 401 | (*rb)->input_section.section->owner->my_archive->filename); |
| 402 | if (i != 0) |
| 403 | return i; |
| 404 | |
| 405 | i = filename_cmp ((*ra)->input_section.section->owner->filename, |
| 406 | (*rb)->input_section.section->owner->filename); |
| 407 | if (i != 0) |
| 408 | return i; |
| 409 | /* the tail idata4/5 are the only ones without relocs to an |
| 410 | idata$6 section unless we are importing by ordinal, |
| 411 | so sort them to last to terminate the IAT |
| 412 | and HNT properly. if no reloc this one is import by ordinal |
| 413 | so we have to sort by section contents */ |
| 414 | |
| 415 | if ( ((*ra)->input_section.section->reloc_count + (*rb)->input_section.section->reloc_count) ) |
| 416 | { |
| 417 | i = (((*ra)->input_section.section->reloc_count > |
| 418 | (*rb)->input_section.section->reloc_count) ? -1 : 0); |
| 419 | if ( i != 0) |
| 420 | return i; |
| 421 | |
| 422 | return (((*ra)->input_section.section->reloc_count > |
| 423 | (*rb)->input_section.section->reloc_count) ? 0 : 1); |
| 424 | } |
| 425 | else |
| 426 | { |
| 427 | if ( (strcmp( (*ra)->input_section.section->name, ".idata$6") == 0) ) |
| 428 | return 0; /* don't sort .idata$6 or .idata$7 FIXME dlltool eliminate .idata$7 */ |
| 429 | |
| 430 | if (! bfd_get_section_contents ((*ra)->input_section.section->owner, |
| 431 | (*ra)->input_section.section, &a_sec, (file_ptr) 0, (bfd_size_type)sizeof(a_sec))) |
| 432 | einfo ("%F%B: Can't read contents of section .idata: %E\n", |
| 433 | (*ra)->input_section.section->owner); |
| 434 | |
| 435 | if (! bfd_get_section_contents ((*rb)->input_section.section->owner, |
| 436 | (*rb)->input_section.section, &b_sec, (file_ptr) 0, (bfd_size_type)sizeof(b_sec) )) |
| 437 | einfo ("%F%B: Can't read contents of section .idata: %E\n", |
| 438 | (*rb)->input_section.section->owner); |
| 439 | |
| 440 | i = ((a_sec < b_sec) ? -1 : 0); |
| 441 | if ( i != 0) |
| 442 | return i; |
| 443 | return ((a_sec < b_sec) ? 0 : 1); |
| 444 | } |
| 445 | return 0; |
| 446 | } |
| 447 | |
| 448 | static int |
| 449 | sort_by_section_name (const void *a, const void *b) |
| 450 | { |
| 451 | const lang_statement_union_type *const *ra = a; |
| 452 | const lang_statement_union_type *const *rb = b; |
| 453 | int i; |
| 454 | i = strcmp ((*ra)->input_section.section->name, |
| 455 | (*rb)->input_section.section->name); |
| 456 | /* This is a hack to make .stab and .stabstr last, so we don't have |
| 457 | to fix strip/objcopy for .reloc sections. |
| 458 | FIXME stripping images with a .rsrc section still needs to be fixed. */ |
| 459 | if (i != 0) |
| 460 | { |
| 461 | if ((CONST_STRNEQ ((*ra)->input_section.section->name, ".stab")) |
| 462 | && (! CONST_STRNEQ ((*rb)->input_section.section->name, ".stab"))) |
| 463 | return 1; |
| 464 | } |
| 465 | return i; |
| 466 | } |
| 467 | |
| 468 | /* Subroutine of sort_sections to a contiguous subset of a list of sections. |
| 469 | NEXT_AFTER is the element after the last one to sort. |
| 470 | The result is a pointer to the last element's "next" pointer. */ |
| 471 | |
| 472 | static lang_statement_union_type ** |
| 473 | sort_sections_1 (lang_statement_union_type **startptr, |
| 474 | lang_statement_union_type *next_after, |
| 475 | int count, |
| 476 | int (*sort_func) (const void *, const void *)) |
| 477 | { |
| 478 | lang_statement_union_type **vec; |
| 479 | lang_statement_union_type *p; |
| 480 | int i; |
| 481 | lang_statement_union_type **ret; |
| 482 | |
| 483 | if (count == 0) |
| 484 | return startptr; |
| 485 | |
| 486 | vec = ((lang_statement_union_type **) |
| 487 | xmalloc (count * sizeof (lang_statement_union_type *))); |
| 488 | |
| 489 | for (p = *startptr, i = 0; i < count; i++, p = p->header.next) |
| 490 | vec[i] = p; |
| 491 | |
| 492 | qsort (vec, count, sizeof (vec[0]), sort_func); |
| 493 | |
| 494 | /* Fill in the next pointers again. */ |
| 495 | *startptr = vec[0]; |
| 496 | for (i = 0; i < count - 1; i++) |
| 497 | vec[i]->header.next = vec[i + 1]; |
| 498 | vec[i]->header.next = next_after; |
| 499 | ret = &vec[i]->header.next; |
| 500 | free (vec); |
| 501 | return ret; |
| 502 | } |
| 503 | |
| 504 | /* Sort the .idata\$foo input sections of archives into filename order. |
| 505 | The reason is so dlltool can arrange to have the pe dll import information |
| 506 | generated correctly - the head of the list goes into dh.o, the tail into |
| 507 | dt.o, and the guts into ds[nnnn].o. Note that this is only needed for the |
| 508 | .idata section. |
| 509 | FIXME: This may no longer be necessary with grouped sections. Instead of |
| 510 | sorting on dh.o, ds[nnnn].o, dt.o, one could, for example, have dh.o use |
| 511 | .idata\$4h, have ds[nnnn].o use .idata\$4s[nnnn], and have dt.o use .idata\$4t. |
| 512 | This would have to be elaborated upon to handle multiple dll's |
| 513 | [assuming such an eloboration is possible of course]. |
| 514 | |
| 515 | We also sort sections in '\$' wild statements. These are created by the |
| 516 | place_orphans routine to implement grouped sections. */ |
| 517 | |
| 518 | static void |
| 519 | sort_sections (lang_statement_union_type *s) |
| 520 | { |
| 521 | for (; s ; s = s->header.next) |
| 522 | switch (s->header.type) |
| 523 | { |
| 524 | case lang_output_section_statement_enum: |
| 525 | sort_sections (s->output_section_statement.children.head); |
| 526 | break; |
| 527 | case lang_wild_statement_enum: |
| 528 | { |
| 529 | lang_statement_union_type **p = &s->wild_statement.children.head; |
| 530 | struct wildcard_list *sec; |
| 531 | |
| 532 | for (sec = s->wild_statement.section_list; sec; sec = sec->next) |
| 533 | { |
| 534 | /* Is this the .idata section? */ |
| 535 | if (sec->spec.name != NULL |
| 536 | && CONST_STRNEQ (sec->spec.name, ".idata")) |
| 537 | { |
| 538 | /* Sort the children. We want to sort any objects in |
| 539 | the same archive. In order to handle the case of |
| 540 | including a single archive multiple times, we sort |
| 541 | all the children by archive name and then by object |
| 542 | name. After sorting them, we re-thread the pointer |
| 543 | chain. */ |
| 544 | |
| 545 | while (*p) |
| 546 | { |
| 547 | lang_statement_union_type *start = *p; |
| 548 | if (start->header.type != lang_input_section_enum |
| 549 | || !start->input_section.section->owner->my_archive) |
| 550 | p = &(start->header.next); |
| 551 | else |
| 552 | { |
| 553 | lang_statement_union_type *end; |
| 554 | int count; |
| 555 | |
| 556 | for (end = start, count = 0; |
| 557 | end && (end->header.type |
| 558 | == lang_input_section_enum); |
| 559 | end = end->header.next) |
| 560 | count++; |
| 561 | |
| 562 | p = sort_sections_1 (p, end, count, |
| 563 | sort_by_file_name); |
| 564 | } |
| 565 | } |
| 566 | break; |
| 567 | } |
| 568 | |
| 569 | /* If this is a collection of grouped sections, sort them. |
| 570 | The linker script must explicitly mention "*(.foo\$)" or |
| 571 | "*(.foo\$*)". Don't sort them if \$ is not the last |
| 572 | character (not sure if this is really useful, but it |
| 573 | allows explicitly mentioning some \$ sections and letting |
| 574 | the linker handle the rest). */ |
| 575 | if (sec->spec.name != NULL) |
| 576 | { |
| 577 | char *q = strchr (sec->spec.name, '\$'); |
| 578 | |
| 579 | if (q != NULL |
| 580 | && (q[1] == '\0' |
| 581 | || (q[1] == '*' && q[2] == '\0'))) |
| 582 | { |
| 583 | lang_statement_union_type *end; |
| 584 | int count; |
| 585 | |
| 586 | for (end = *p, count = 0; end; end = end->header.next) |
| 587 | { |
| 588 | if (end->header.type != lang_input_section_enum) |
| 589 | abort (); |
| 590 | count++; |
| 591 | } |
| 592 | (void) sort_sections_1 (p, end, count, |
| 593 | sort_by_section_name); |
| 594 | } |
| 595 | break; |
| 596 | } |
| 597 | } |
| 598 | } |
| 599 | break; |
| 600 | default: |
| 601 | break; |
| 602 | } |
| 603 | } |
| 604 | |
| 605 | static void |
| 606 | gld_${EMULATION_NAME}_before_allocation (void) |
| 607 | { |
| 608 | #ifdef TARGET_IS_ppcpe |
| 609 | /* Here we rummage through the found bfds to collect toc information */ |
| 610 | { |
| 611 | LANG_FOR_EACH_INPUT_STATEMENT (is) |
| 612 | { |
| 613 | if (!ppc_process_before_allocation(is->the_bfd, &link_info)) |
| 614 | { |
| 615 | einfo("Errors encountered processing file %s\n", is->filename); |
| 616 | } |
| 617 | } |
| 618 | } |
| 619 | |
| 620 | /* We have seen it all. Allocate it, and carry on */ |
| 621 | ppc_allocate_toc_section (&link_info); |
| 622 | #else |
| 623 | #ifdef TARGET_IS_armpe |
| 624 | /* FIXME: we should be able to set the size of the interworking stub |
| 625 | section. |
| 626 | |
| 627 | Here we rummage through the found bfds to collect glue |
| 628 | information. FIXME: should this be based on a command line |
| 629 | option? krk@cygnus.com */ |
| 630 | { |
| 631 | LANG_FOR_EACH_INPUT_STATEMENT (is) |
| 632 | { |
| 633 | if (!arm_process_before_allocation (is->the_bfd, & link_info)) |
| 634 | { |
| 635 | einfo ("Errors encountered processing file %s", is->filename); |
| 636 | } |
| 637 | } |
| 638 | } |
| 639 | |
| 640 | /* We have seen it all. Allocate it, and carry on */ |
| 641 | arm_allocate_interworking_sections (& link_info); |
| 642 | #endif /* TARGET_IS_armpe */ |
| 643 | #endif /* TARGET_IS_ppcpe */ |
| 644 | |
| 645 | sort_sections (stat_ptr->head); |
| 646 | |
| 647 | before_allocation_default (); |
| 648 | } |
| 649 | \f |
| 650 | /* Place an orphan section. We use this to put sections with a '\$' in them |
| 651 | into the right place. Any section with a '\$' in them (e.g. .text\$foo) |
| 652 | gets mapped to the output section with everything from the '\$' on stripped |
| 653 | (e.g. .text). |
| 654 | See the Microsoft Portable Executable and Common Object File Format |
| 655 | Specification 4.1, section 4.2, Grouped Sections. |
| 656 | |
| 657 | FIXME: This is now handled by the linker script using wildcards, |
| 658 | but I'm leaving this here in case we want to enable it for sections |
| 659 | which are not mentioned in the linker script. */ |
| 660 | |
| 661 | static lang_output_section_statement_type * |
| 662 | gld${EMULATION_NAME}_place_orphan (asection *s, |
| 663 | const char *secname, |
| 664 | int constraint) |
| 665 | { |
| 666 | char *output_secname, *ps; |
| 667 | lang_output_section_statement_type *os; |
| 668 | lang_statement_union_type *l; |
| 669 | |
| 670 | if ((s->flags & SEC_ALLOC) == 0) |
| 671 | return NULL; |
| 672 | |
| 673 | /* Don't process grouped sections unless doing a final link. |
| 674 | If they're marked as COMDAT sections, we don't want .text\$foo to |
| 675 | end up in .text and then have .text disappear because it's marked |
| 676 | link-once-discard. */ |
| 677 | if (bfd_link_relocatable (&link_info)) |
| 678 | return NULL; |
| 679 | |
| 680 | /* Everything from the '\$' on gets deleted so don't allow '\$' as the |
| 681 | first character. */ |
| 682 | if (*secname == '\$') |
| 683 | einfo ("%P%F: section %s has '\$' as first character\n", secname); |
| 684 | if (strchr (secname + 1, '\$') == NULL) |
| 685 | return NULL; |
| 686 | |
| 687 | /* Look up the output section. The Microsoft specs say sections names in |
| 688 | image files never contain a '\$'. Fortunately, lang_..._lookup creates |
| 689 | the section if it doesn't exist. */ |
| 690 | output_secname = xstrdup (secname); |
| 691 | ps = strchr (output_secname + 1, '\$'); |
| 692 | *ps = 0; |
| 693 | os = lang_output_section_statement_lookup (output_secname, constraint, TRUE); |
| 694 | |
| 695 | /* Find the '\$' wild statement for this section. We currently require the |
| 696 | linker script to explicitly mention "*(.foo\$)". |
| 697 | FIXME: ppcpe.sc has .CRT\$foo in the .rdata section. According to the |
| 698 | Microsoft docs this isn't correct so it's not (currently) handled. */ |
| 699 | |
| 700 | ps[0] = '\$'; |
| 701 | ps[1] = 0; |
| 702 | for (l = os->children.head; l; l = l->header.next) |
| 703 | if (l->header.type == lang_wild_statement_enum) |
| 704 | { |
| 705 | struct wildcard_list *sec; |
| 706 | |
| 707 | for (sec = l->wild_statement.section_list; sec; sec = sec->next) |
| 708 | if (sec->spec.name && strcmp (sec->spec.name, output_secname) == 0) |
| 709 | break; |
| 710 | if (sec) |
| 711 | break; |
| 712 | } |
| 713 | ps[0] = 0; |
| 714 | if (l == NULL) |
| 715 | einfo ("%P%F: *(%s\$) missing from linker script\n", output_secname); |
| 716 | |
| 717 | /* Link the input section in and we're done for now. |
| 718 | The sections still have to be sorted, but that has to wait until |
| 719 | all such sections have been processed by us. The sorting is done by |
| 720 | sort_sections. */ |
| 721 | lang_add_section (&l->wild_statement.children, s, NULL, os); |
| 722 | |
| 723 | return os; |
| 724 | } |
| 725 | \f |
| 726 | static char * |
| 727 | gld_${EMULATION_NAME}_get_script (int *isfile) |
| 728 | EOF |
| 729 | # Scripts compiled in. |
| 730 | # sed commands to quote an ld script as a C string. |
| 731 | sc="-f stringify.sed" |
| 732 | |
| 733 | fragment <<EOF |
| 734 | { |
| 735 | *isfile = 0; |
| 736 | |
| 737 | if (bfd_link_relocatable (&link_info) && config.build_constructors) |
| 738 | return |
| 739 | EOF |
| 740 | sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c |
| 741 | echo ' ; else if (bfd_link_relocatable (&link_info)) return' >> e${EMULATION_NAME}.c |
| 742 | sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c |
| 743 | echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c |
| 744 | sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c |
| 745 | echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c |
| 746 | sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c |
| 747 | echo ' ; else return' >> e${EMULATION_NAME}.c |
| 748 | sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c |
| 749 | echo '; }' >> e${EMULATION_NAME}.c |
| 750 | |
| 751 | fragment <<EOF |
| 752 | |
| 753 | |
| 754 | struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = |
| 755 | { |
| 756 | gld_${EMULATION_NAME}_before_parse, |
| 757 | syslib_default, |
| 758 | hll_default, |
| 759 | after_parse_default, |
| 760 | gld_${EMULATION_NAME}_after_open, |
| 761 | after_allocation_default, |
| 762 | set_output_arch_default, |
| 763 | ldemul_default_target, |
| 764 | gld_${EMULATION_NAME}_before_allocation, |
| 765 | gld_${EMULATION_NAME}_get_script, |
| 766 | "${EMULATION_NAME}", |
| 767 | "${OUTPUT_FORMAT}", |
| 768 | finish_default, |
| 769 | NULL, /* create output section statements */ |
| 770 | NULL, /* open dynamic archive */ |
| 771 | gld${EMULATION_NAME}_place_orphan, |
| 772 | gld_${EMULATION_NAME}_set_symbols, |
| 773 | NULL, /* parse_args */ |
| 774 | gld${EMULATION_NAME}_add_options, |
| 775 | gld${EMULATION_NAME}_handle_option, |
| 776 | NULL, /* unrecognized file */ |
| 777 | NULL, /* list options */ |
| 778 | NULL, /* recognized file */ |
| 779 | NULL, /* find_potential_libraries */ |
| 780 | NULL, /* new_vers_pattern */ |
| 781 | NULL /* extra_map_file_text */ |
| 782 | }; |
| 783 | EOF |