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[tinycc.git] / tccpe.c
blobf1bd0f784d3a635a4b6d81feaa0f62569207becd
1 /*
2 * TCCPE.C - PE file output for the TinyC Compiler
3 *
4 * Copyright (c) 2005 grischka
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21 typedef unsigned char BYTE;
22 typedef unsigned short WORD;
23 typedef unsigned long DWORD;
24 #define ST static
25
26 /* XXX: move that to TCC ? */
27 int verbose = 0;
28
29 /* definitions below are from winnt.h */
30
31 typedef struct _IMAGE_DOS_HEADER { /* DOS .EXE header */
32 WORD e_magic; /* Magic number */
33 WORD e_cblp; /* Bytes on last page of file */
34 WORD e_cp; /* Pages in file */
35 WORD e_crlc; /* Relocations */
36 WORD e_cparhdr; /* Size of header in paragraphs */
37 WORD e_minalloc; /* Minimum extra paragraphs needed */
38 WORD e_maxalloc; /* Maximum extra paragraphs needed */
39 WORD e_ss; /* Initial (relative) SS value */
40 WORD e_sp; /* Initial SP value */
41 WORD e_csum; /* Checksum */
42 WORD e_ip; /* Initial IP value */
43 WORD e_cs; /* Initial (relative) CS value */
44 WORD e_lfarlc; /* File address of relocation table */
45 WORD e_ovno; /* Overlay number */
46 WORD e_res[4]; /* Reserved words */
47 WORD e_oemid; /* OEM identifier (for e_oeminfo) */
48 WORD e_oeminfo; /* OEM information; e_oemid specific */
49 WORD e_res2[10]; /* Reserved words */
50 DWORD e_lfanew; /* File address of new exe header */
51 BYTE e_code[0x40];
52
53 } IMAGE_DOS_HEADER, *PIMAGE_DOS_HEADER;
54
55 #define IMAGE_NT_SIGNATURE 0x00004550 /* PE00 */
56 #define SIZE_OF_NT_SIGNATURE 4
57
58 typedef struct _IMAGE_FILE_HEADER {
59 WORD Machine;
60 WORD NumberOfSections;
61 DWORD TimeDateStamp;
62 DWORD PointerToSymbolTable;
63 DWORD NumberOfSymbols;
64 WORD SizeOfOptionalHeader;
65 WORD Characteristics;
66 } IMAGE_FILE_HEADER, *PIMAGE_FILE_HEADER;
67
68
69 #define IMAGE_SIZEOF_FILE_HEADER 20
70
71 typedef struct _IMAGE_DATA_DIRECTORY {
72 DWORD VirtualAddress;
73 DWORD Size;
74 } IMAGE_DATA_DIRECTORY, *PIMAGE_DATA_DIRECTORY;
75
76
77 typedef struct _IMAGE_OPTIONAL_HEADER {
78 /* Standard fields. */
79 WORD Magic;
80 BYTE MajorLinkerVersion;
81 BYTE MinorLinkerVersion;
82 DWORD SizeOfCode;
83 DWORD SizeOfInitializedData;
84 DWORD SizeOfUninitializedData;
85 DWORD AddressOfEntryPoint;
86 DWORD BaseOfCode;
87 DWORD BaseOfData;
88
89 /* NT additional fields. */
90 DWORD ImageBase;
91 DWORD SectionAlignment;
92 DWORD FileAlignment;
93 WORD MajorOperatingSystemVersion;
94 WORD MinorOperatingSystemVersion;
95 WORD MajorImageVersion;
96 WORD MinorImageVersion;
97 WORD MajorSubsystemVersion;
98 WORD MinorSubsystemVersion;
99 DWORD Win32VersionValue;
100 DWORD SizeOfImage;
101 DWORD SizeOfHeaders;
102 DWORD CheckSum;
103 WORD Subsystem;
104 WORD DllCharacteristics;
105 DWORD SizeOfStackReserve;
106 DWORD SizeOfStackCommit;
107 DWORD SizeOfHeapReserve;
108 DWORD SizeOfHeapCommit;
109 DWORD LoaderFlags;
110 DWORD NumberOfRvaAndSizes;
111 IMAGE_DATA_DIRECTORY DataDirectory[16];
112
113 } IMAGE_OPTIONAL_HEADER32, *PIMAGE_OPTIONAL_HEADER32;
114
115
116 #define IMAGE_DIRECTORY_ENTRY_EXPORT 0 /* Export Directory */
117 #define IMAGE_DIRECTORY_ENTRY_IMPORT 1 /* Import Directory */
118 #define IMAGE_DIRECTORY_ENTRY_RESOURCE 2 /* Resource Directory */
119 #define IMAGE_DIRECTORY_ENTRY_EXCEPTION 3 /* Exception Directory */
120 #define IMAGE_DIRECTORY_ENTRY_SECURITY 4 /* Security Directory */
121 #define IMAGE_DIRECTORY_ENTRY_BASERELOC 5 /* Base Relocation Table */
122 #define IMAGE_DIRECTORY_ENTRY_DEBUG 6 /* Debug Directory */
123 /* IMAGE_DIRECTORY_ENTRY_COPYRIGHT 7 (X86 usage) */
124 #define IMAGE_DIRECTORY_ENTRY_ARCHITECTURE 7 /* Architecture Specific Data */
125 #define IMAGE_DIRECTORY_ENTRY_GLOBALPTR 8 /* RVA of GP */
126 #define IMAGE_DIRECTORY_ENTRY_TLS 9 /* TLS Directory */
127 #define IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG 10 /* Load Configuration Directory */
128 #define IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT 11 /* Bound Import Directory in headers */
129 #define IMAGE_DIRECTORY_ENTRY_IAT 12 /* Import Address Table */
130 #define IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT 13 /* Delay Load Import Descriptors */
131 #define IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR 14 /* COM Runtime descriptor */
132
133 /* Section header format. */
134 #define IMAGE_SIZEOF_SHORT_NAME 8
135
136 typedef struct _IMAGE_SECTION_HEADER {
137 BYTE Name[IMAGE_SIZEOF_SHORT_NAME];
138 union {
139 DWORD PhysicalAddress;
140 DWORD VirtualSize;
141 } Misc;
142 DWORD VirtualAddress;
143 DWORD SizeOfRawData;
144 DWORD PointerToRawData;
145 DWORD PointerToRelocations;
146 DWORD PointerToLinenumbers;
147 WORD NumberOfRelocations;
148 WORD NumberOfLinenumbers;
149 DWORD Characteristics;
150 } IMAGE_SECTION_HEADER, *PIMAGE_SECTION_HEADER;
151
152 #define IMAGE_SIZEOF_SECTION_HEADER 40
153
154 /* ----------------------------------------------------------- */
155 typedef struct _IMAGE_BASE_RELOCATION {
156 DWORD VirtualAddress;
157 DWORD SizeOfBlock;
158 // WORD TypeOffset[1];
159 } IMAGE_BASE_RELOCATION;
160
161 #define IMAGE_SIZEOF_BASE_RELOCATION 8
162
163 #define IMAGE_REL_BASED_ABSOLUTE 0
164 #define IMAGE_REL_BASED_HIGH 1
165 #define IMAGE_REL_BASED_LOW 2
166 #define IMAGE_REL_BASED_HIGHLOW 3
167 #define IMAGE_REL_BASED_HIGHADJ 4
168 #define IMAGE_REL_BASED_MIPS_JMPADDR 5
169 #define IMAGE_REL_BASED_SECTION 6
170 #define IMAGE_REL_BASED_REL32 7
171
172 /* ----------------------------------------------------------- */
173
174 /* ----------------------------------------------------------- */
175 IMAGE_DOS_HEADER pe_dos_hdr = {
176 0x5A4D, /*WORD e_magic; Magic number */
177 0x0090, /*WORD e_cblp; Bytes on last page of file */
178 0x0003, /*WORD e_cp; Pages in file */
179 0x0000, /*WORD e_crlc; Relocations */
180
181 0x0004, /*WORD e_cparhdr; Size of header in paragraphs */
182 0x0000, /*WORD e_minalloc; Minimum extra paragraphs needed */
183 0xFFFF, /*WORD e_maxalloc; Maximum extra paragraphs needed */
184 0x0000, /*WORD e_ss; Initial (relative) SS value */
185
186 0x00B8, /*WORD e_sp; Initial SP value */
187 0x0000, /*WORD e_csum; Checksum */
188 0x0000, /*WORD e_ip; Initial IP value */
189 0x0000, /*WORD e_cs; Initial (relative) CS value */
190 0x0040, /*WORD e_lfarlc; File address of relocation table */
191 0x0000, /*WORD e_ovno; Overlay number */
192 {0, 0, 0, 0}, /*WORD e_res[4]; Reserved words */
193 0x0000, /*WORD e_oemid; OEM identifier (for e_oeminfo) */
194 0x0000, /*WORD e_oeminfo; OEM information; e_oemid specific */
195 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /*WORD e_res2[10]; Reserved words */
196 0x00000080, /*DWORD e_lfanew; File address of new exe header */
197 { /* 14 code bytes + "This program cannot be run in DOS mode.\r\r\n$" + 6 * 0x00 */
198 /*0040 */ 0x0e, 0x1f, 0xba, 0x0e, 0x00, 0xb4, 0x09, 0xcd, 0x21, 0xb8,
199 0x01, 0x4c, 0xcd, 0x21, 0x54, 0x68,
200 /*0050 */ 0x69, 0x73, 0x20, 0x70, 0x72, 0x6f, 0x67, 0x72, 0x61, 0x6d,
201 0x20, 0x63, 0x61, 0x6e, 0x6e, 0x6f,
202 /*0060 */ 0x74, 0x20, 0x62, 0x65, 0x20, 0x72, 0x75, 0x6e, 0x20, 0x69,
203 0x6e, 0x20, 0x44, 0x4f, 0x53, 0x20,
204 /*0070 */ 0x6d, 0x6f, 0x64, 0x65, 0x2e, 0x0d, 0x0d, 0x0a, 0x24, 0x00,
205 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
206 /*0080 */
207 }
208 };
209
210 DWORD pe_magic = IMAGE_NT_SIGNATURE;
211
212 IMAGE_FILE_HEADER pe_file_hdr = {
213 0x014C, /*WORD Machine; */
214 0x0003, /*WORD NumberOfSections; */
215 0x00000000, /*DWORD TimeDateStamp; */
216 0x00000000, /*DWORD PointerToSymbolTable; */
217 0x00000000, /*DWORD NumberOfSymbols; */
218 0x00E0, /*WORD SizeOfOptionalHeader; */
219 0x030F /*WORD Characteristics; */
220 };
221
222 IMAGE_OPTIONAL_HEADER32 pe_opt_hdr = {
223 /* Standard fields. */
224 0x010B, /*WORD Magic; */
225 0x06, /*BYTE MajorLinkerVersion; */
226 0x00, /*BYTE MinorLinkerVersion; */
227 0x00000000, /*DWORD SizeOfCode; */
228 0x00000000, /*DWORD SizeOfInitializedData; */
229 0x00000000, /*DWORD SizeOfUninitializedData; */
230 0x00000000, /*DWORD AddressOfEntryPoint; */
231 0x00000000, /*DWORD BaseOfCode; */
232 0x00000000, /*DWORD BaseOfData; */
233
234 /* NT additional fields. */
235 0x00400000, /*DWORD ImageBase; */
236 0x00001000, /*DWORD SectionAlignment; */
237 0x00000200, /*DWORD FileAlignment; */
238 0x0004, /*WORD MajorOperatingSystemVersion; */
239 0x0000, /*WORD MinorOperatingSystemVersion; */
240 0x0000, /*WORD MajorImageVersion; */
241 0x0000, /*WORD MinorImageVersion; */
242 0x0004, /*WORD MajorSubsystemVersion; */
243 0x0000, /*WORD MinorSubsystemVersion; */
244 0x00000000, /*DWORD Win32VersionValue; */
245 0x00000000, /*DWORD SizeOfImage; */
246 0x00000200, /*DWORD SizeOfHeaders; */
247 0x00000000, /*DWORD CheckSum; */
248 0x0002, /*WORD Subsystem; */
249 0x0000, /*WORD DllCharacteristics; */
250 0x00100000, /*DWORD SizeOfStackReserve; */
251 0x00001000, /*DWORD SizeOfStackCommit; */
252 0x00100000, /*DWORD SizeOfHeapReserve; */
253 0x00001000, /*DWORD SizeOfHeapCommit; */
254 0x00000000, /*DWORD LoaderFlags; */
255 0x00000010, /*DWORD NumberOfRvaAndSizes; */
256
257 /* IMAGE_DATA_DIRECTORY DataDirectory[16]; */
258 {{0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0},
259 {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}}
260 };
261
262 /*----------------------------------------------------------------------------*/
263
264 /*----------------------------------------------------------------------------*/
265
266 struct pe_import_header {
267 DWORD first_entry;
268 DWORD time_date;
269 DWORD forwarder;
270 DWORD lib_name_offset;
271 DWORD first_thunk;
272 };
273
274 struct pe_export_header {
275 DWORD Characteristics;
276 DWORD TimeDateStamp;
277 DWORD Version;
278 DWORD Name;
279 DWORD Base;
280 DWORD NumberOfFunctions;
281 DWORD NumberOfNames;
282 DWORD AddressOfFunctions;
283 DWORD AddressOfNames;
284 DWORD AddressOfNameOrdinals;
285 };
286
287 struct pe_reloc_header {
288 DWORD offset;
289 DWORD size;
290 };
291
292 /* ------------------------------------------------------------- */
293 /* internal temporary structures */
294
295 ST const char *pe_sec_names[] = {
296 ".text",
297 ".data",
298 ".bss",
299 ".rsrc",
300 ".reloc",
301 ".stab",
302 ".stabstr"
303 };
304
305 enum {
306 sec_text = 0,
307 sec_data,
308 sec_bss,
309 sec_rsrc,
310 sec_reloc,
311 sec_stab,
312 sec_stabstr,
313 pe_sec_number
314 };
315
316 ST DWORD pe_flags[] = {
317 0x60000020, /* ".text", */
318 0xC0000040, /* ".data", */
319 0xC0000080, /* ".bss", */
320 0x40000040, /* ".rsrc", */
321 0x42000040, /* ".reloc", */
322 0x42000802, /* ".stab", */
323 0x42000802 /* ".stabstr", */
324 };
325
326 struct section_info {
327 struct section_info *next;
328 int id;
329 DWORD sh_addr;
330 DWORD sh_size;
331 unsigned char *data;
332 DWORD data_size;
333 };
334
335 struct import_symbol {
336 int sym_index;
337 int offset;
338 };
339
340 struct pe_import_info {
341 int dll_index;
342 int sym_count;
343 struct import_symbol **symbols;
344 };
345
346 struct pe_info {
347 const char *filename;
348 DWORD sizeofheaders;
349 DWORD imagebase;
350 DWORD start_addr;
351 DWORD imp_offs;
352 DWORD imp_size;
353 DWORD iat_offs;
354 DWORD iat_size;
355 DWORD exp_offs;
356 DWORD exp_size;
357 struct section_info sh_info[pe_sec_number];
358 int sec_count;
359 struct pe_import_info **imp_info;
360 int imp_count;
361 Section *reloc;
362 Section *thunk;
363 TCCState *s1;
364 };
365
366 /* ------------------------------------------------------------- */
367 #define PE_MERGE_DATA
368 // #define PE_PRINT_SECTIONS
369
370 #ifndef MAX_PATH
371 #define MAX_PATH 260
372 #endif
373
374 void error_noabort(const char *, ...);
375
376 ST char pe_type;
377
378 #define PE_NUL 0
379 #define PE_DLL 1
380 #define PE_GUI 2
381 #define PE_EXE 3
382
383 ST int pe_find_import(TCCState * s1, const char *symbol, char *ret)
384 {
385 int sym_index = find_elf_sym(s1->dynsymtab_section, symbol);
386 if (0 == sym_index &&
387 !memcmp(symbol, "__imp__", 7)) {
388 /* Hm, maybe it's '_symbol' instead of '__imp__symbol' */
389 symbol += 6;
390 sym_index = find_elf_sym(s1->dynsymtab_section, symbol);
391 }
392 if (ret)
393 strcpy(ret, symbol);
394 return sym_index;
395 }
396
397 #ifdef WIN32
398 ST void **pe_imp;
399 ST int nb_pe_imp;
400
401 void *resolve_sym(struct TCCState *s1, const char *symbol, int type)
402 {
403 char buffer[100], *p = buffer;
404 void *a = NULL;
405 int sym_index = pe_find_import(s1, symbol, p);
406 int dll_index;
407 const char *dll_name;
408 void *hm;
409
410 if (sym_index) {
411 dll_index = ((Elf32_Sym *) s1->dynsymtab_section->data)[sym_index].
412 st_other;
413 dll_name = s1->loaded_dlls[dll_index]->name;
414 hm = GetModuleHandleA(dll_name);
415 if (NULL == hm)
416 hm = LoadLibraryA(dll_name);
417 if (hm) {
418 a = GetProcAddress(hm, buffer);
419 if (a && STT_OBJECT == type) {
420 // need to return a pointer to the address for data objects
421 dynarray_add(&pe_imp, &nb_pe_imp, a);
422 a = &pe_imp[nb_pe_imp - 1];
423 }
424 }
425 }
426 return a;
427 }
428 #endif
429
430 #define for_sym_in_symtab(sym) \
431 for (sym = (Elf32_Sym *)symtab_section->data + 1; \
432 sym < (Elf32_Sym *)(symtab_section->data + \
433 symtab_section->data_offset); \
434 ++sym)
435
436 #define pe_set_datadir(dir,addr,size) \
437 pe_opt_hdr.DataDirectory[dir].VirtualAddress = addr, \
438 pe_opt_hdr.DataDirectory[dir].Size = size
439
440 /*----------------------------------------------------------------------------*/
441 ST void dynarray_reset(void ***pp, int *n)
442 {
443 int i;
444 for (i = 0; i < *n; ++i)
445 tcc_free((*pp)[i]);
446 tcc_free(*pp);
447 *pp = NULL;
448 *n = 0;
449 }
450
451 ST int dynarray_assoc(void **pp, int n, int key)
452 {
453 int i;
454 for (i = 0; i < n; ++i, ++pp)
455 if (key == **(int **) pp)
456 return i;
457 return -1;
458 }
459
460 #if 0
461 ST DWORD umin(DWORD a, DWORD b)
462 {
463 return a < b ? a : b;
464 }
465 #endif
466
467 ST DWORD umax(DWORD a, DWORD b)
468 {
469 return a < b ? b : a;
470 }
471
472 ST void pe_fpad(FILE * fp, DWORD new_pos)
473 {
474 DWORD pos = ftell(fp);
475 while (++pos <= new_pos)
476 fputc(0, fp);
477 }
478
479 ST DWORD pe_file_align(DWORD n)
480 {
481 return (n + (0x200 - 1)) & ~(0x200 - 1);
482 }
483
484 ST DWORD pe_virtual_align(DWORD n)
485 {
486 return (n + (0x1000 - 1)) & ~(0x1000 - 1);
487 }
488
489 ST void pe_align_section(Section * s, int a)
490 {
491 int i = s->data_offset & (a - 1);
492 if (i)
493 section_ptr_add(s, a - i);
494 }
495
496
497 /*----------------------------------------------------------------------------*/
498 ST int pe_write_pe(struct pe_info *pe)
499 {
500 int i;
501 FILE *op;
502 DWORD file_offset;
503 IMAGE_SECTION_HEADER ish[pe_sec_number], *psh;
504 int sec_index = 0;
505
506 op = fopen(pe->filename, "wb");
507 if (NULL == op) {
508 error_noabort("could not create file: %s", pe->filename);
509 return 1;
510 }
511
512 memset(&ish, 0, sizeof ish);
513
514 pe->sizeofheaders = pe_file_align(sizeof pe_dos_hdr
515 + sizeof pe_magic
516 + sizeof pe_file_hdr
517 + sizeof pe_opt_hdr
518 +
519 pe->sec_count *
520 sizeof(IMAGE_SECTION_HEADER)
521 );
522
523 file_offset = pe->sizeofheaders;
524 pe_fpad(op, file_offset);
525
526 if (2 == verbose)
527 printf("-------------------------------"
528 "\n virt file size section" "\n");
529
530 for (i = 0; i < pe->sec_count; ++i) {
531 struct section_info *si = pe->sh_info + i;
532 const char *sh_name = pe_sec_names[si->id];
533 unsigned long addr = si->sh_addr - pe->imagebase;
534 unsigned long size = si->sh_size;
535
536 if (2 == verbose)
537 printf("%6lx %6lx %6lx %s\n",
538 addr, file_offset, size, sh_name);
539
540 switch (si->id) {
541 case sec_text:
542 pe_opt_hdr.BaseOfCode = addr;
543 pe_opt_hdr.AddressOfEntryPoint = addr + pe->start_addr;
544 break;
545
546 case sec_data:
547 pe_opt_hdr.BaseOfData = addr;
548 if (pe->imp_size) {
549 pe_set_datadir(IMAGE_DIRECTORY_ENTRY_IMPORT,
550 pe->imp_offs + addr, pe->imp_size);
551 pe_set_datadir(IMAGE_DIRECTORY_ENTRY_IAT,
552 pe->iat_offs + addr, pe->iat_size);
553 }
554 if (pe->exp_size) {
555 pe_set_datadir(IMAGE_DIRECTORY_ENTRY_EXPORT,
556 pe->exp_offs + addr, pe->exp_size);
557 }
558 break;
559
560 case sec_bss:
561 break;
562
563 case sec_reloc:
564 pe_set_datadir(IMAGE_DIRECTORY_ENTRY_BASERELOC, addr, size);
565 break;
566
567 case sec_rsrc:
568 pe_set_datadir(IMAGE_DIRECTORY_ENTRY_RESOURCE, addr, size);
569 break;
570
571 case sec_stab:
572 break;
573
574 case sec_stabstr:
575 break;
576 }
577
578 psh = &ish[sec_index++];
579 strcpy((char *) psh->Name, sh_name);
580
581 psh->Characteristics = pe_flags[si->id];
582 psh->VirtualAddress = addr;
583 psh->Misc.VirtualSize = size;
584 pe_opt_hdr.SizeOfImage =
585 umax(psh->VirtualAddress + psh->Misc.VirtualSize,
586 pe_opt_hdr.SizeOfImage);
587
588 if (si->data_size) {
589 psh->PointerToRawData = file_offset;
590 fwrite(si->data, 1, si->data_size, op);
591 file_offset = pe_file_align(file_offset + si->data_size);
592 psh->SizeOfRawData = file_offset - psh->PointerToRawData;
593 pe_fpad(op, file_offset);
594 }
595 }
596
597 /*----------------------------------------------------- */
598
599 pe_file_hdr.NumberOfSections = sec_index;
600 pe_opt_hdr.SizeOfHeaders = pe->sizeofheaders;
601 pe_opt_hdr.ImageBase = pe->imagebase;
602 if (PE_DLL == pe_type)
603 pe_file_hdr.Characteristics = 0x230E;
604 else if (PE_GUI != pe_type)
605 pe_opt_hdr.Subsystem = 3;
606
607 fseek(op, SEEK_SET, 0);
608 fwrite(&pe_dos_hdr, 1, sizeof pe_dos_hdr, op);
609 fwrite(&pe_magic, 1, sizeof pe_magic, op);
610 fwrite(&pe_file_hdr, 1, sizeof pe_file_hdr, op);
611 fwrite(&pe_opt_hdr, 1, sizeof pe_opt_hdr, op);
612 for (i = 0; i < sec_index; ++i)
613 fwrite(&ish[i], 1, sizeof(IMAGE_SECTION_HEADER), op);
614 fclose(op);
615
616 if (2 == verbose)
617 printf("-------------------------------\n");
618 if (verbose)
619 printf("<-- %s (%lu bytes)\n", pe->filename, file_offset);
620
621 return 0;
622 }
623
624 /*----------------------------------------------------------------------------*/
625 ST int pe_add_import(struct pe_info *pe, int sym_index, DWORD offset)
626 {
627 int i;
628 int dll_index;
629 struct pe_import_info *p;
630 struct import_symbol *s;
631
632 dll_index =
633 ((Elf32_Sym *) pe->s1->dynsymtab_section->data)[sym_index].
634 st_other;
635 i = dynarray_assoc((void **) pe->imp_info, pe->imp_count, dll_index);
636 if (-1 != i) {
637 p = pe->imp_info[i];
638 goto found_dll;
639 }
640 p = tcc_mallocz(sizeof *p);
641 p->dll_index = dll_index;
642 dynarray_add((void ***) &pe->imp_info, &pe->imp_count, p);
643
644 found_dll:
645 i = dynarray_assoc((void **) p->symbols, p->sym_count, sym_index);
646 if (-1 != i)
647 goto found_sym;
648 s = tcc_mallocz(sizeof *s);
649 s->sym_index = sym_index;
650 s->offset = offset;
651 dynarray_add((void ***) &p->symbols, &p->sym_count, s);
652
653 found_sym:
654 return 1;
655 }
656
657 /*----------------------------------------------------------------------------*/
658 ST void pe_build_imports(struct pe_info *pe)
659 {
660 int thk_ptr, ent_ptr, dll_ptr, sym_cnt, i;
661 DWORD voffset = pe->thunk->sh_addr - pe->imagebase;
662 int ndlls = pe->imp_count;
663
664 for (sym_cnt = i = 0; i < ndlls; ++i)
665 sym_cnt += pe->imp_info[i]->sym_count;
666
667 if (0 == sym_cnt)
668 return;
669
670 pe_align_section(pe->thunk, 16);
671
672 pe->imp_offs = dll_ptr = pe->thunk->data_offset;
673 pe->imp_size = (ndlls + 1) * sizeof(struct pe_import_header);
674 pe->iat_offs = dll_ptr + pe->imp_size;
675 pe->iat_size = (sym_cnt + ndlls) * sizeof(DWORD);
676 section_ptr_add(pe->thunk, pe->imp_size + 2 * pe->iat_size);
677
678 thk_ptr = pe->iat_offs;
679 ent_ptr = pe->iat_offs + pe->iat_size;
680 for (i = 0; i < pe->imp_count; ++i) {
681 struct pe_import_header *hdr;
682 int k, n, v;
683 struct pe_import_info *p = pe->imp_info[i];
684 const char *name = pe->s1->loaded_dlls[p->dll_index]->name;
685
686 /* put the dll name into the import header */
687 if (0 == strncmp(name, "lib", 3))
688 name += 3;
689 v = put_elf_str(pe->thunk, name);
690
691 hdr = (struct pe_import_header *) (pe->thunk->data + dll_ptr);
692 hdr->first_thunk = thk_ptr + voffset;
693 hdr->first_entry = ent_ptr + voffset;
694 hdr->lib_name_offset = v + voffset;
695
696 for (k = 0, n = p->sym_count; k <= n; ++k) {
697 if (k < n) {
698 DWORD offset = p->symbols[k]->offset;
699 int sym_index = p->symbols[k]->sym_index;
700 Elf32_Sym *sym =
701 (Elf32_Sym *) pe->s1->dynsymtab_section->data +
702 sym_index;
703 const char *name =
704 pe->s1->dynsymtab_section->link->data + sym->st_name;
705
706 if (offset & 0x80000000) { /* ref to data */
707 Elf32_Sym *sym =
708 &((Elf32_Sym *) symtab_section->
709 data)[offset & 0x7FFFFFFF];
710 sym->st_value = thk_ptr;
711 sym->st_shndx = pe->thunk->sh_num;
712 } else { /* ref to function */
713
714 char buffer[100];
715 sprintf(buffer, "IAT.%s", name);
716 sym_index =
717 put_elf_sym(symtab_section, thk_ptr, sizeof(DWORD),
718 ELF32_ST_INFO(STB_GLOBAL, STT_OBJECT),
719 0, pe->thunk->sh_num, buffer);
720
721 put_elf_reloc(symtab_section, text_section, offset, R_386_32, /*R_JMP_SLOT, */
722 sym_index);
723 }
724 v = pe->thunk->data_offset + voffset;
725 section_ptr_add(pe->thunk, sizeof(WORD)); /* hint, not used */
726 put_elf_str(pe->thunk, name);
727 } else {
728 v = 0; // last entry is zero
729 }
730 *(DWORD *) (pe->thunk->data + thk_ptr) =
731 *(DWORD *) (pe->thunk->data + ent_ptr) = v;
732 thk_ptr += sizeof(DWORD);
733 ent_ptr += sizeof(DWORD);
734 }
735 dll_ptr += sizeof(struct pe_import_header);
736 dynarray_reset((void ***) &p->symbols, &p->sym_count);
737 }
738 dynarray_reset((void ***) &pe->imp_info, &pe->imp_count);
739 }
740
741 /* ------------------------------------------------------------- */
742 ST int sym_cmp(const void *va, const void *vb)
743 {
744 Elf32_Sym *sa = (Elf32_Sym *)symtab_section->data + *(int*)va;
745 Elf32_Sym *sb = (Elf32_Sym *)symtab_section->data + *(int*)vb;
746 const char *ca = symtab_section->link->data + sa->st_name;
747 const char *cb = symtab_section->link->data + sb->st_name;
748 return strcmp(ca, cb);
749 }
750
751 ST void pe_build_exports(struct pe_info *pe)
752 {
753 Elf32_Sym *sym;
754 DWORD func_offset, voffset;
755 struct pe_export_header *hdr;
756 int sym_count, n, ord, *sorted;
757
758 voffset = pe->thunk->sh_addr - pe->imagebase;
759 sym_count = 0, n = 1, sorted = NULL;
760
761 // for simplicity only functions are exported
762 for_sym_in_symtab(sym)
763 {
764 if ((sym->st_other & 1)
765 && sym->st_shndx == text_section->sh_num)
766 dynarray_add((void***)&sorted, &sym_count, (void*)n);
767 ++n;
768 }
769
770 if (0 == sym_count)
771 return;
772
773 qsort (sorted, sym_count, sizeof sorted[0], sym_cmp);
774 pe_align_section(pe->thunk, 16);
775
776 pe->exp_offs = pe->thunk->data_offset;
777 hdr = section_ptr_add(pe->thunk,
778 sizeof(struct pe_export_header) +
779 sym_count * (2 * sizeof(DWORD) + sizeof(WORD)));
780
781 func_offset = pe->exp_offs + sizeof(struct pe_export_header);
782
783 hdr->Characteristics = 0;
784 hdr->Base = 1;
785 hdr->NumberOfFunctions = sym_count;
786 hdr->NumberOfNames = sym_count;
787 hdr->AddressOfFunctions = func_offset + voffset;
788 hdr->AddressOfNames = hdr->AddressOfFunctions + sym_count * sizeof(DWORD);
789 hdr->AddressOfNameOrdinals = hdr->AddressOfNames + sym_count * sizeof(DWORD);
790 hdr->Name = pe->thunk->data_offset + voffset;
791 put_elf_str(pe->thunk, tcc_basename(pe->filename));
792
793 for (ord = 0; ord < sym_count; ++ord)
794 {
795 char *name; DWORD *p, *pfunc, *pname; WORD *pord;
796 sym = (Elf32_Sym *)symtab_section->data + sorted[ord];
797 name = symtab_section->link->data + sym->st_name;
798 p = (DWORD*)(pe->thunk->data + func_offset);
799 pfunc = p + ord;
800 pname = p + sym_count + ord;
801 pord = (WORD *)(p + 2*sym_count) + ord;
802 *pfunc = sym->st_value + pe->s1->sections[sym->st_shndx]->sh_addr - pe->imagebase;
803 *pname = pe->thunk->data_offset + voffset;
804 *pord = ord;
805 put_elf_str(pe->thunk, name);
806 /* printf("export: %s\n", name); */
807 }
808 pe->exp_size = pe->thunk->data_offset - pe->exp_offs;
809 tcc_free(sorted);
810 }
811
812 /* ------------------------------------------------------------- */
813 ST void pe_build_reloc(struct pe_info *pe, int *section_order,
814 int section_count)
815 {
816 DWORD offset, block_ptr, addr;
817 int count, i;
818 Elf32_Rel *rel, *rel_end;
819 Section *s = NULL, *sr;
820 offset = addr = block_ptr = count = i = 0;
821 rel = rel_end = NULL;
822 for (;;) {
823 if (rel < rel_end) {
824 int type = ELF32_R_TYPE(rel->r_info);
825 addr = rel->r_offset + s->sh_addr;
826 ++rel;
827 if (type != R_386_32)
828 continue;
829 if (count == 0) { /* new block */
830 block_ptr = pe->reloc->data_offset;
831 section_ptr_add(pe->reloc, sizeof(struct pe_reloc_header));
832 offset = addr & 0xFFFFFFFF << 12;
833 }
834 if ((addr -= offset) < (1 << 12)) { /* one block spans 4k addresses */
835 WORD *wp = section_ptr_add(pe->reloc, sizeof(WORD));
836 *wp = addr | IMAGE_REL_BASED_HIGHLOW << 12;
837 ++count;
838 continue;
839 }
840 --rel;
841 } else if (i < section_count) {
842 sr = (s = pe->s1->sections[section_order[i++]])->reloc;
843 if (sr) {
844 rel = (Elf32_Rel *) sr->data;
845 rel_end = (Elf32_Rel *) (sr->data + sr->data_offset);
846 }
847 continue;
848 }
849
850 if (count) { /* store the last block and ready for a new one */
851 struct pe_reloc_header *hdr;
852 if (count & 1)
853 section_ptr_add(pe->reloc, 2), ++count;
854 hdr = (struct pe_reloc_header *) (pe->reloc->data + block_ptr);
855 hdr->offset = offset - pe->imagebase;
856 hdr->size =
857 count * sizeof(WORD) + sizeof(struct pe_reloc_header);
858 count = 0;
859 }
860 if (rel >= rel_end)
861 break;
862 }
863 }
864
865 /* ------------------------------------------------------------- */
866 ST int pe_assign_addresses(struct pe_info *pe)
867 {
868 int i, k, n;
869 DWORD addr;
870 int section_order[pe_sec_number];
871 struct section_info *si_data = NULL;
872
873 pe->imagebase = PE_DLL == pe_type ? 0x10000000 : 0x00400000;
874 addr = pe->imagebase + 1;
875
876 if (PE_DLL == pe_type)
877 pe->reloc = new_section(pe->s1, ".reloc", SHT_DYNAMIC, SHF_ALLOC);
878
879 for (n = k = 0; n < pe_sec_number; ++n) {
880 for (i = 1; i < pe->s1->nb_sections; ++i) {
881 Section *s = pe->s1->sections[i];
882 if (0 == strcmp(s->name, pe_sec_names[n])) {
883 struct section_info *si = &pe->sh_info[pe->sec_count];
884 #ifdef PE_MERGE_DATA
885 if (n == sec_bss && si_data) {
886 /* append .bss to .data */
887 s->sh_addr = addr = ((addr - 1) | 15) + 1;
888 addr += s->data_offset;
889 si_data->sh_size = addr - si_data->sh_addr;
890 } else
891 #endif
892 {
893 si->sh_addr = s->sh_addr = addr =
894 pe_virtual_align(addr);
895 si->id = n;
896
897 if (n == sec_data) {
898 pe->thunk = s;
899 si_data = si;
900 pe_build_imports(pe);
901 pe_build_exports(pe);
902 } else if (n == sec_reloc) {
903 pe_build_reloc(pe, section_order, k);
904 }
905
906 if (s->data_offset) {
907 if (n != sec_bss) {
908 si->data = s->data;
909 si->data_size = s->data_offset;
910 }
911
912 addr += s->data_offset;
913 si->sh_size = s->data_offset;
914 ++pe->sec_count;
915 }
916 //printf("Section %08X %04X %s\n", si->sh_addr, si->data_size, s->name);
917 }
918 section_order[k] = i, ++k;
919 }
920 }
921 }
922 return 0;
923 }
924
925 /*----------------------------------------------------------------------------*/
926 ST int pe_check_symbols(struct pe_info *pe)
927 {
928 Elf32_Sym *sym;
929 int ret = 0;
930
931 pe_align_section(text_section, 8);
932
933 for_sym_in_symtab(sym) {
934 if (sym->st_shndx == SHN_UNDEF) {
935 const char *symbol = symtab_section->link->data + sym->st_name;
936 unsigned type = ELF32_ST_TYPE(sym->st_info);
937 int sym_index = pe_find_import(pe->s1, symbol, NULL);
938 if (sym_index) {
939 if (type == STT_FUNC) {
940 unsigned long offset = text_section->data_offset;
941 if (pe_add_import(pe, sym_index, offset + 2)) {
942 /* add the 'jmp IAT[x]' instruction */
943 *(WORD *) section_ptr_add(text_section, 8) =
944 0x25FF;
945 /* patch the symbol */
946 sym->st_shndx = text_section->sh_num;
947 sym->st_value = offset;
948 continue;
949 }
950 } else if (type == STT_OBJECT) { /* data, ptr to that should be */
951 if (pe_add_import(pe, sym_index,
952 (sym -
953 (Elf32_Sym *) symtab_section->data) |
954 0x80000000))
955 continue;
956 }
957 }
958 error_noabort("undefined symbol '%s'", symbol);
959 ret = 1;
960 } else
961 if (pe->s1->rdynamic
962 && ELF32_ST_BIND(sym->st_info) != STB_LOCAL) {
963 /* if -rdynamic option, then export all non local symbols */
964 sym->st_other |= 1;
965 }
966 }
967 return ret;
968 }
969
970 /*----------------------------------------------------------------------------*/
971 #ifdef PE_PRINT_SECTIONS
972 ST void pe_print_section(FILE * f, Section * s)
973 { /* just if you'r curious */
974 BYTE *p, *e, b;
975 int i, n, l, m;
976 p = s->data;
977 e = s->data + s->data_offset;
978 l = e - p;
979
980 fprintf(f, "section \"%s\"", s->name);
981 if (s->link)
982 fprintf(f, "\nlink \"%s\"", s->link->name);
983 if (s->reloc)
984 fprintf(f, "\nreloc \"%s\"", s->reloc->name);
985 fprintf(f, "\nv_addr %08X", s->sh_addr);
986 fprintf(f, "\ncontents %08X", l);
987 fprintf(f, "\n\n");
988
989 if (s->sh_type == SHT_NOBITS)
990 return;
991
992 if (s->sh_type == SHT_SYMTAB)
993 m = sizeof(Elf32_Sym);
994 if (s->sh_type == SHT_REL)
995 m = sizeof(Elf32_Rel);
996 else
997 m = 16;
998
999 for (i = 0; i < l;) {
1000 fprintf(f, "%08X", i);
1001 for (n = 0; n < m; ++n) {
1002 if (n + i < l)
1003 fprintf(f, " %02X", p[i + n]);
1004 else
1005 fprintf(f, " ");
1006 }
1007
1008 if (s->sh_type == SHT_SYMTAB) {
1009 Elf32_Sym *sym = (Elf32_Sym *) (p + i);
1010 const char *name = s->link->data + sym->st_name;
1011 fprintf(f,
1012 " name:%04X"
1013 " value:%04X"
1014 " size:%04X"
1015 " bind:%02X"
1016 " type:%02X"
1017 " other:%02X"
1018 " shndx:%04X"
1019 " \"%s\"",
1020 sym->st_name,
1021 sym->st_value,
1022 sym->st_size,
1023 ELF32_ST_BIND(sym->st_info),
1024 ELF32_ST_TYPE(sym->st_info),
1025 sym->st_other, sym->st_shndx, name);
1026 } else if (s->sh_type == SHT_REL) {
1027 Elf32_Rel *rel = (Elf32_Rel *) (p + i);
1028 Elf32_Sym *sym =
1029 (Elf32_Sym *) s->link->data + ELF32_R_SYM(rel->r_info);
1030 const char *name = s->link->link->data + sym->st_name;
1031 fprintf(f,
1032 " offset:%04X"
1033 " type:%02X"
1034 " symbol:%04X"
1035 " \"%s\"",
1036 rel->r_offset,
1037 ELF32_R_TYPE(rel->r_info),
1038 ELF32_R_SYM(rel->r_info), name);
1039 } else {
1040 fprintf(f, " ");
1041 for (n = 0; n < m; ++n) {
1042 if (n + i < l) {
1043 b = p[i + n];
1044 if (b < 32 || b >= 127)
1045 b = '.';
1046 fprintf(f, "%c", b);
1047 }
1048 }
1049 }
1050 i += m;
1051 fprintf(f, "\n");
1052 }
1053 fprintf(f, "\n\n");
1054 }
1055 #endif
1056
1057 static int pe_test_cmd(const char **pp, const char *cmd)
1058 {
1059 const char *p;
1060 char *q, buf[16];
1061 int ret;
1062
1063 p = *pp;
1064 q = buf;
1065 while (*p != '\0' && !is_space(*p)) {
1066 if ((q - buf) < sizeof(buf) - 1)
1067 *q++ = toup(*p);
1068 p++;
1069 }
1070 *q = '\0';
1071 ret = !strcmp(buf, cmd);
1072 *pp = p;
1073 return ret;
1074 }
1075
1076 /* ------------------------------------------------------------- */
1077 int pe_load_def_file(TCCState * s1, FILE * fp)
1078 {
1079 DLLReference *dllref;
1080 int f = 0, sym_index;
1081 char *p, line[120], dllname[40];
1082 while (fgets(line, sizeof line, fp)) {
1083 p = strchr(line, 0);
1084 while (p > line && p[-1] <= ' ')
1085 --p;
1086 *p = 0;
1087 p = line;
1088 while (*p && *p <= ' ')
1089 ++p;
1090
1091 if (*p && ';' != *p)
1092 switch (f) {
1093 case 0:
1094 if (!pe_test_cmd((const char **)&p, "LIBRARY"))
1095 return -1;
1096 while (is_space(*p))
1097 p++;
1098 pstrcpy(dllname, sizeof(dllname), p);
1099 ++f;
1100 continue;
1101
1102 case 1:
1103 if (!pe_test_cmd((const char **)&p, "EXPORTS"))
1104 return -1;
1105 ++f;
1106 continue;
1107
1108 case 2:
1109 dllref =
1110 tcc_malloc(sizeof(DLLReference) + strlen(dllname));
1111 strcpy(dllref->name, dllname);
1112 dllref->level = 0;
1113 dynarray_add((void ***) &s1->loaded_dlls,
1114 &s1->nb_loaded_dlls, dllref);
1115 ++f;
1116
1117 default:
1118 /* tccpe needs to know from what dll it should import
1119 the sym */
1120 sym_index = add_elf_sym(s1->dynsymtab_section,
1121 0, 0, ELF32_ST_INFO(STB_GLOBAL,
1122 STT_FUNC),
1123 s1->nb_loaded_dlls - 1,
1124 text_section->sh_num, p);
1125 continue;
1126 }
1127 }
1128 return 0;
1129 }
1130
1131 /* ------------------------------------------------------------- */
1132 void pe_guess_outfile(char *objfilename, int output_type)
1133 {
1134 char *ext = strrchr(objfilename, '.');
1135 if (NULL == ext)
1136 ext = strchr(objfilename, 0);
1137 if (output_type == TCC_OUTPUT_DLL)
1138 strcpy(ext, ".dll");
1139 else
1140 if (output_type == TCC_OUTPUT_EXE)
1141 strcpy(ext, ".exe");
1142 else
1143 if (output_type == TCC_OUTPUT_OBJ && strcmp(ext, ".o"))
1144 strcpy(ext, ".o");
1145 else
1146 error("no outputfile given");
1147 }
1148
1149 /* ------------------------------------------------------------- */
1150 unsigned long pe_add_runtime(TCCState * s1)
1151 {
1152 const char *start_symbol;
1153 unsigned long addr;
1154
1155 if (find_elf_sym(symtab_section, "WinMain"))
1156 pe_type = PE_GUI;
1157 else
1158 if (TCC_OUTPUT_DLL == s1->output_type)
1159 {
1160 pe_type = PE_DLL;
1161 // need this for 'tccelf.c:relocate_section()'
1162 s1->output_type = TCC_OUTPUT_EXE;
1163 }
1164
1165 start_symbol =
1166 TCC_OUTPUT_MEMORY == s1->output_type
1167 ? PE_GUI == pe_type ? "_runwinmain" : NULL
1168 : PE_DLL == pe_type ? "_dllstart"
1169 : PE_GUI == pe_type ? "_winstart" : "_start";
1170
1171 /* grab the startup code from libtcc1 */
1172 if (start_symbol)
1173 add_elf_sym(symtab_section,
1174 0, 0,
1175 ELF32_ST_INFO(STB_GLOBAL, STT_NOTYPE), 0,
1176 SHN_UNDEF, start_symbol);
1177
1178 if (0 == s1->nostdlib) {
1179 tcc_add_library(s1, "tcc1");
1180 tcc_add_library(s1, "msvcrt");
1181 if (PE_DLL == pe_type || PE_GUI == pe_type) {
1182 tcc_add_library(s1, "kernel32");
1183 tcc_add_library(s1, "user32");
1184 tcc_add_library(s1, "gdi32");
1185 }
1186 }
1187
1188 addr = start_symbol ?
1189 (unsigned long) tcc_get_symbol_err(s1, start_symbol) : 0;
1190
1191 if (s1->output_type == TCC_OUTPUT_MEMORY && addr) {
1192 /* for -run GUI's, put '_runwinmain' instead of 'main' */
1193 add_elf_sym(symtab_section,
1194 addr, 0,
1195 ELF32_ST_INFO(STB_GLOBAL, STT_NOTYPE), 0,
1196 text_section->sh_num, "main");
1197
1198 /* FreeConsole(); */
1199 }
1200 return addr;
1201 }
1202
1203 int tcc_output_pe(TCCState * s1, const char *filename)
1204 {
1205 int ret;
1206 struct pe_info pe;
1207 int i;
1208 memset(&pe, 0, sizeof pe);
1209 pe.filename = filename;
1210 pe.s1 = s1;
1211 pe.start_addr = pe_add_runtime(s1);
1212
1213 relocate_common_syms(); /* assign bss adresses */
1214 ret = pe_check_symbols(&pe);
1215 if (0 == ret) {
1216 pe_assign_addresses(&pe);
1217 relocate_syms(s1, 0);
1218 for (i = 1; i < s1->nb_sections; ++i) {
1219 Section *s = s1->sections[i];
1220 if (s->reloc)
1221 relocate_section(s1, s);
1222 }
1223 ret = pe_write_pe(&pe);
1224 }
1225 #ifdef PE_PRINT_SECTIONS
1226 {
1227 Section *s;
1228 FILE *f;
1229 f = fopen("tccpe.log", "wt");
1230 for (i = 1; i < s1->nb_sections; ++i) {
1231 s = s1->sections[i];
1232 pe_print_section(f, s);
1233 }
1234 pe_print_section(f, s1->dynsymtab_section);
1235 fclose(f);
1236 }
1237 #endif
1238 return ret;
1239 }
1240
1241 /*----------------------------------------------------------------------------*/
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