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Increase VSTACK_SIZE to 512.
[tinycc.git] / tccpe.c
blob01969995e8888c7eb51d57ec2a09c11c09c3291c
1 /*
2 * TCCPE.C - PE file output for the Tiny C Compiler
3 *
4 * Copyright (c) 2005-2007 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 #include "tcc.h"
22
23 #define PE_MERGE_DATA 1
24 #define PE_PRINT_SECTIONS 0
25
26 #ifndef _WIN32
27 #define stricmp strcasecmp
28 #define strnicmp strncasecmp
29 #include <sys/stat.h> /* chmod() */
30 #endif
31
32 #ifdef TCC_TARGET_X86_64
33 # define ADDR3264 ULONGLONG
34 # define PE_IMAGE_REL IMAGE_REL_BASED_DIR64
35 # define REL_TYPE_DIRECT R_X86_64_64
36 # define R_XXX_THUNKFIX R_X86_64_PC32
37 # define R_XXX_RELATIVE R_X86_64_RELATIVE
38 # define R_XXX_FUNCCALL R_X86_64_PC32
39 # define IMAGE_FILE_MACHINE 0x8664
40 # define RSRC_RELTYPE 3
41
42 #elif defined TCC_TARGET_ARM
43 # define ADDR3264 DWORD
44 # define PE_IMAGE_REL IMAGE_REL_BASED_HIGHLOW
45 # define REL_TYPE_DIRECT R_ARM_ABS32
46 # define R_XXX_THUNKFIX R_ARM_ABS32
47 # define R_XXX_RELATIVE R_ARM_RELATIVE
48 # define R_XXX_FUNCCALL R_ARM_PC24
49 # define R_XXX_FUNCCALL2 R_ARM_ABS32
50 # define IMAGE_FILE_MACHINE 0x01C0
51 # define RSRC_RELTYPE 7 /* ??? (not tested) */
52
53 #elif defined TCC_TARGET_I386
54 # define ADDR3264 DWORD
55 # define PE_IMAGE_REL IMAGE_REL_BASED_HIGHLOW
56 # define REL_TYPE_DIRECT R_386_32
57 # define R_XXX_THUNKFIX R_386_32
58 # define R_XXX_RELATIVE R_386_RELATIVE
59 # define R_XXX_FUNCCALL R_386_PC32
60 # define IMAGE_FILE_MACHINE 0x014C
61 # define RSRC_RELTYPE 7 /* DIR32NB */
62
63 #endif
64
65 #ifndef IMAGE_NT_SIGNATURE
66 /* ----------------------------------------------------------- */
67 /* definitions below are from winnt.h */
68
69 typedef unsigned char BYTE;
70 typedef unsigned short WORD;
71 typedef unsigned int DWORD;
72 typedef unsigned long long ULONGLONG;
73 #pragma pack(push, 1)
74
75 typedef struct _IMAGE_DOS_HEADER { /* DOS .EXE header */
76 WORD e_magic; /* Magic number */
77 WORD e_cblp; /* Bytes on last page of file */
78 WORD e_cp; /* Pages in file */
79 WORD e_crlc; /* Relocations */
80 WORD e_cparhdr; /* Size of header in paragraphs */
81 WORD e_minalloc; /* Minimum extra paragraphs needed */
82 WORD e_maxalloc; /* Maximum extra paragraphs needed */
83 WORD e_ss; /* Initial (relative) SS value */
84 WORD e_sp; /* Initial SP value */
85 WORD e_csum; /* Checksum */
86 WORD e_ip; /* Initial IP value */
87 WORD e_cs; /* Initial (relative) CS value */
88 WORD e_lfarlc; /* File address of relocation table */
89 WORD e_ovno; /* Overlay number */
90 WORD e_res[4]; /* Reserved words */
91 WORD e_oemid; /* OEM identifier (for e_oeminfo) */
92 WORD e_oeminfo; /* OEM information; e_oemid specific */
93 WORD e_res2[10]; /* Reserved words */
94 DWORD e_lfanew; /* File address of new exe header */
95 } IMAGE_DOS_HEADER, *PIMAGE_DOS_HEADER;
96
97 #define IMAGE_NT_SIGNATURE 0x00004550 /* PE00 */
98 #define SIZE_OF_NT_SIGNATURE 4
99
100 typedef struct _IMAGE_FILE_HEADER {
101 WORD Machine;
102 WORD NumberOfSections;
103 DWORD TimeDateStamp;
104 DWORD PointerToSymbolTable;
105 DWORD NumberOfSymbols;
106 WORD SizeOfOptionalHeader;
107 WORD Characteristics;
108 } IMAGE_FILE_HEADER, *PIMAGE_FILE_HEADER;
109
110
111 #define IMAGE_SIZEOF_FILE_HEADER 20
112
113 typedef struct _IMAGE_DATA_DIRECTORY {
114 DWORD VirtualAddress;
115 DWORD Size;
116 } IMAGE_DATA_DIRECTORY, *PIMAGE_DATA_DIRECTORY;
117
118
119 typedef struct _IMAGE_OPTIONAL_HEADER {
120 /* Standard fields. */
121 WORD Magic;
122 BYTE MajorLinkerVersion;
123 BYTE MinorLinkerVersion;
124 DWORD SizeOfCode;
125 DWORD SizeOfInitializedData;
126 DWORD SizeOfUninitializedData;
127 DWORD AddressOfEntryPoint;
128 DWORD BaseOfCode;
129 #ifndef TCC_TARGET_X86_64
130 DWORD BaseOfData;
131 #endif
132 /* NT additional fields. */
133 ADDR3264 ImageBase;
134 DWORD SectionAlignment;
135 DWORD FileAlignment;
136 WORD MajorOperatingSystemVersion;
137 WORD MinorOperatingSystemVersion;
138 WORD MajorImageVersion;
139 WORD MinorImageVersion;
140 WORD MajorSubsystemVersion;
141 WORD MinorSubsystemVersion;
142 DWORD Win32VersionValue;
143 DWORD SizeOfImage;
144 DWORD SizeOfHeaders;
145 DWORD CheckSum;
146 WORD Subsystem;
147 WORD DllCharacteristics;
148 ADDR3264 SizeOfStackReserve;
149 ADDR3264 SizeOfStackCommit;
150 ADDR3264 SizeOfHeapReserve;
151 ADDR3264 SizeOfHeapCommit;
152 DWORD LoaderFlags;
153 DWORD NumberOfRvaAndSizes;
154 IMAGE_DATA_DIRECTORY DataDirectory[16];
155 } IMAGE_OPTIONAL_HEADER32, IMAGE_OPTIONAL_HEADER64, IMAGE_OPTIONAL_HEADER;
156
157 #define IMAGE_DIRECTORY_ENTRY_EXPORT 0 /* Export Directory */
158 #define IMAGE_DIRECTORY_ENTRY_IMPORT 1 /* Import Directory */
159 #define IMAGE_DIRECTORY_ENTRY_RESOURCE 2 /* Resource Directory */
160 #define IMAGE_DIRECTORY_ENTRY_EXCEPTION 3 /* Exception Directory */
161 #define IMAGE_DIRECTORY_ENTRY_SECURITY 4 /* Security Directory */
162 #define IMAGE_DIRECTORY_ENTRY_BASERELOC 5 /* Base Relocation Table */
163 #define IMAGE_DIRECTORY_ENTRY_DEBUG 6 /* Debug Directory */
164 /* IMAGE_DIRECTORY_ENTRY_COPYRIGHT 7 (X86 usage) */
165 #define IMAGE_DIRECTORY_ENTRY_ARCHITECTURE 7 /* Architecture Specific Data */
166 #define IMAGE_DIRECTORY_ENTRY_GLOBALPTR 8 /* RVA of GP */
167 #define IMAGE_DIRECTORY_ENTRY_TLS 9 /* TLS Directory */
168 #define IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG 10 /* Load Configuration Directory */
169 #define IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT 11 /* Bound Import Directory in headers */
170 #define IMAGE_DIRECTORY_ENTRY_IAT 12 /* Import Address Table */
171 #define IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT 13 /* Delay Load Import Descriptors */
172 #define IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR 14 /* COM Runtime descriptor */
173
174 /* Section header format. */
175 #define IMAGE_SIZEOF_SHORT_NAME 8
176
177 typedef struct _IMAGE_SECTION_HEADER {
178 BYTE Name[IMAGE_SIZEOF_SHORT_NAME];
179 union {
180 DWORD PhysicalAddress;
181 DWORD VirtualSize;
182 } Misc;
183 DWORD VirtualAddress;
184 DWORD SizeOfRawData;
185 DWORD PointerToRawData;
186 DWORD PointerToRelocations;
187 DWORD PointerToLinenumbers;
188 WORD NumberOfRelocations;
189 WORD NumberOfLinenumbers;
190 DWORD Characteristics;
191 } IMAGE_SECTION_HEADER, *PIMAGE_SECTION_HEADER;
192
193 #define IMAGE_SIZEOF_SECTION_HEADER 40
194
195 typedef struct _IMAGE_EXPORT_DIRECTORY {
196 DWORD Characteristics;
197 DWORD TimeDateStamp;
198 WORD MajorVersion;
199 WORD MinorVersion;
200 DWORD Name;
201 DWORD Base;
202 DWORD NumberOfFunctions;
203 DWORD NumberOfNames;
204 DWORD AddressOfFunctions;
205 DWORD AddressOfNames;
206 DWORD AddressOfNameOrdinals;
207 } IMAGE_EXPORT_DIRECTORY,*PIMAGE_EXPORT_DIRECTORY;
208
209 typedef struct _IMAGE_IMPORT_DESCRIPTOR {
210 union {
211 DWORD Characteristics;
212 DWORD OriginalFirstThunk;
213 };
214 DWORD TimeDateStamp;
215 DWORD ForwarderChain;
216 DWORD Name;
217 DWORD FirstThunk;
218 } IMAGE_IMPORT_DESCRIPTOR;
219
220 typedef struct _IMAGE_BASE_RELOCATION {
221 DWORD VirtualAddress;
222 DWORD SizeOfBlock;
223 // WORD TypeOffset[1];
224 } IMAGE_BASE_RELOCATION;
225
226 #define IMAGE_SIZEOF_BASE_RELOCATION 8
227
228 #define IMAGE_REL_BASED_ABSOLUTE 0
229 #define IMAGE_REL_BASED_HIGH 1
230 #define IMAGE_REL_BASED_LOW 2
231 #define IMAGE_REL_BASED_HIGHLOW 3
232 #define IMAGE_REL_BASED_HIGHADJ 4
233 #define IMAGE_REL_BASED_MIPS_JMPADDR 5
234 #define IMAGE_REL_BASED_SECTION 6
235 #define IMAGE_REL_BASED_REL32 7
236 #define IMAGE_REL_BASED_DIR64 10
237
238 #define IMAGE_SCN_CNT_CODE 0x00000020
239 #define IMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040
240 #define IMAGE_SCN_CNT_UNINITIALIZED_DATA 0x00000080
241 #define IMAGE_SCN_MEM_DISCARDABLE 0x02000000
242 #define IMAGE_SCN_MEM_SHARED 0x10000000
243 #define IMAGE_SCN_MEM_EXECUTE 0x20000000
244 #define IMAGE_SCN_MEM_READ 0x40000000
245 #define IMAGE_SCN_MEM_WRITE 0x80000000
246
247 #pragma pack(pop)
248
249 /* ----------------------------------------------------------- */
250 #endif /* ndef IMAGE_NT_SIGNATURE */
251 /* ----------------------------------------------------------- */
252
253 #ifndef IMAGE_REL_BASED_DIR64
254 # define IMAGE_REL_BASED_DIR64 10
255 #endif
256
257 #pragma pack(push, 1)
258 struct pe_header
259 {
260 IMAGE_DOS_HEADER doshdr;
261 BYTE dosstub[0x40];
262 DWORD nt_sig;
263 IMAGE_FILE_HEADER filehdr;
264 #ifdef TCC_TARGET_X86_64
265 IMAGE_OPTIONAL_HEADER64 opthdr;
266 #else
267 #ifdef _WIN64
268 IMAGE_OPTIONAL_HEADER32 opthdr;
269 #else
270 IMAGE_OPTIONAL_HEADER opthdr;
271 #endif
272 #endif
273 };
274
275 struct pe_reloc_header {
276 DWORD offset;
277 DWORD size;
278 };
279
280 struct pe_rsrc_header {
281 struct _IMAGE_FILE_HEADER filehdr;
282 struct _IMAGE_SECTION_HEADER sectionhdr;
283 };
284
285 struct pe_rsrc_reloc {
286 DWORD offset;
287 DWORD size;
288 WORD type;
289 };
290 #pragma pack(pop)
291
292 /* ------------------------------------------------------------- */
293 /* internal temporary structures */
294
295 enum {
296 sec_text = 0,
297 sec_rdata ,
298 sec_data ,
299 sec_bss ,
300 sec_idata ,
301 sec_pdata ,
302 sec_other ,
303 sec_rsrc ,
304 sec_stab ,
305 sec_stabstr ,
306 sec_reloc ,
307 sec_last
308 };
309
310 #if 0
311 static const DWORD pe_sec_flags[] = {
312 0x60000020, /* ".text" , */
313 0xC0000040, /* ".data" , */
314 0xC0000080, /* ".bss" , */
315 0x40000040, /* ".idata" , */
316 0x40000040, /* ".pdata" , */
317 0xE0000060, /* < other > , */
318 0x40000040, /* ".rsrc" , */
319 0x42000802, /* ".stab" , */
320 0x42000040, /* ".reloc" , */
321 };
322 #endif
323
324 struct section_info {
325 int cls;
326 char name[32];
327 ADDR3264 sh_addr;
328 DWORD sh_size;
329 DWORD pe_flags;
330 Section *sec;
331 DWORD data_size;
332 IMAGE_SECTION_HEADER ish;
333 };
334
335 struct import_symbol {
336 int sym_index;
337 int iat_index;
338 int thk_offset;
339 };
340
341 struct pe_import_info {
342 int dll_index;
343 int sym_count;
344 struct import_symbol **symbols;
345 };
346
347 struct pe_info {
348 TCCState *s1;
349 Section *reloc;
350 Section *thunk;
351 const char *filename;
352 int type;
353 DWORD sizeofheaders;
354 ADDR3264 imagebase;
355 const char *start_symbol;
356 DWORD start_addr;
357 DWORD imp_offs;
358 DWORD imp_size;
359 DWORD iat_offs;
360 DWORD iat_size;
361 DWORD exp_offs;
362 DWORD exp_size;
363 int subsystem;
364 DWORD section_align;
365 DWORD file_align;
366 struct section_info **sec_info;
367 int sec_count;
368 struct pe_import_info **imp_info;
369 int imp_count;
370 };
371
372 #define PE_NUL 0
373 #define PE_DLL 1
374 #define PE_GUI 2
375 #define PE_EXE 3
376 #define PE_RUN 4
377
378 /* --------------------------------------------*/
379
380 static const char *pe_export_name(TCCState *s1, ElfW(Sym) *sym)
381 {
382 const char *name = (char*)symtab_section->link->data + sym->st_name;
383 if (s1->leading_underscore && name[0] == '_' && !(sym->st_other & ST_PE_STDCALL))
384 return name + 1;
385 return name;
386 }
387
388 static int pe_find_import(TCCState * s1, ElfW(Sym) *sym)
389 {
390 char buffer[200];
391 const char *s, *p;
392 int sym_index = 0, n = 0;
393 int a, err = 0;
394
395 do {
396 s = pe_export_name(s1, sym);
397 a = 0;
398 if (n) {
399 /* second try: */
400 if (sym->st_other & ST_PE_STDCALL) {
401 /* try w/0 stdcall deco (windows API convention) */
402 p = strrchr(s, '@');
403 if (!p || s[0] != '_')
404 break;
405 strcpy(buffer, s+1)[p-s-1] = 0;
406 } else if (s[0] != '_') { /* try non-ansi function */
407 buffer[0] = '_', strcpy(buffer + 1, s);
408 } else if (0 == memcmp(s, "__imp_", 6)) { /* mingw 2.0 */
409 strcpy(buffer, s + 6), a = 1;
410 } else if (0 == memcmp(s, "_imp__", 6)) { /* mingw 3.7 */
411 strcpy(buffer, s + 6), a = 1;
412 } else {
413 continue;
414 }
415 s = buffer;
416 }
417 sym_index = find_elf_sym(s1->dynsymtab_section, s);
418 // printf("find (%d) %d %s\n", n, sym_index, s);
419 if (sym_index
420 && ELFW(ST_TYPE)(sym->st_info) == STT_OBJECT
421 && 0 == (sym->st_other & ST_PE_IMPORT)
422 && 0 == a
423 ) err = -1, sym_index = 0;
424 } while (0 == sym_index && ++n < 2);
425 return n == 2 ? err : sym_index;
426 }
427
428 /*----------------------------------------------------------------------------*/
429
430 static int dynarray_assoc(void **pp, int n, int key)
431 {
432 int i;
433 for (i = 0; i < n; ++i, ++pp)
434 if (key == **(int **) pp)
435 return i;
436 return -1;
437 }
438
439 static DWORD umin(DWORD a, DWORD b)
440 {
441 return a < b ? a : b;
442 }
443
444 static DWORD umax(DWORD a, DWORD b)
445 {
446 return a < b ? b : a;
447 }
448
449 static DWORD pe_file_align(struct pe_info *pe, DWORD n)
450 {
451 return (n + (pe->file_align - 1)) & ~(pe->file_align - 1);
452 }
453
454 static ADDR3264 pe_virtual_align(struct pe_info *pe, ADDR3264 n)
455 {
456 return (n + (pe->section_align - 1)) & ~(ADDR3264)(pe->section_align - 1);
457 }
458
459 static void pe_align_section(Section *s, int a)
460 {
461 int i = s->data_offset & (a-1);
462 if (i)
463 section_ptr_add(s, a - i);
464 }
465
466 static void pe_set_datadir(struct pe_header *hdr, int dir, DWORD addr, DWORD size)
467 {
468 hdr->opthdr.DataDirectory[dir].VirtualAddress = addr;
469 hdr->opthdr.DataDirectory[dir].Size = size;
470 }
471
472 struct pe_file {
473 FILE *op;
474 DWORD sum;
475 unsigned pos;
476 };
477
478 static int pe_fwrite(void *data, int len, struct pe_file *pf)
479 {
480 WORD *p = data;
481 DWORD sum;
482 int ret, i;
483 pf->pos += (ret = fwrite(data, 1, len, pf->op));
484 sum = pf->sum;
485 for (i = len; i > 0; i -= 2) {
486 sum += (i >= 2) ? *p++ : *(BYTE*)p;
487 sum = (sum + (sum >> 16)) & 0xFFFF;
488 }
489 pf->sum = sum;
490 return len == ret ? 0 : -1;
491 }
492
493 static void pe_fpad(struct pe_file *pf, DWORD new_pos)
494 {
495 char buf[256];
496 int n, diff = new_pos - pf->pos;
497 memset(buf, 0, sizeof buf);
498 while (diff > 0) {
499 diff -= n = umin(diff, sizeof buf);
500 fwrite(buf, n, 1, pf->op);
501 }
502 pf->pos = new_pos;
503 }
504
505 /*----------------------------------------------------------------------------*/
506 static int pe_write(struct pe_info *pe)
507 {
508 static const struct pe_header pe_template = {
509 {
510 /* IMAGE_DOS_HEADER doshdr */
511 0x5A4D, /*WORD e_magic; Magic number */
512 0x0090, /*WORD e_cblp; Bytes on last page of file */
513 0x0003, /*WORD e_cp; Pages in file */
514 0x0000, /*WORD e_crlc; Relocations */
515
516 0x0004, /*WORD e_cparhdr; Size of header in paragraphs */
517 0x0000, /*WORD e_minalloc; Minimum extra paragraphs needed */
518 0xFFFF, /*WORD e_maxalloc; Maximum extra paragraphs needed */
519 0x0000, /*WORD e_ss; Initial (relative) SS value */
520
521 0x00B8, /*WORD e_sp; Initial SP value */
522 0x0000, /*WORD e_csum; Checksum */
523 0x0000, /*WORD e_ip; Initial IP value */
524 0x0000, /*WORD e_cs; Initial (relative) CS value */
525 0x0040, /*WORD e_lfarlc; File address of relocation table */
526 0x0000, /*WORD e_ovno; Overlay number */
527 {0,0,0,0}, /*WORD e_res[4]; Reserved words */
528 0x0000, /*WORD e_oemid; OEM identifier (for e_oeminfo) */
529 0x0000, /*WORD e_oeminfo; OEM information; e_oemid specific */
530 {0,0,0,0,0,0,0,0,0,0}, /*WORD e_res2[10]; Reserved words */
531 0x00000080 /*DWORD e_lfanew; File address of new exe header */
532 },{
533 /* BYTE dosstub[0x40] */
534 /* 14 code bytes + "This program cannot be run in DOS mode.\r\r\n$" + 6 * 0x00 */
535 0x0e,0x1f,0xba,0x0e,0x00,0xb4,0x09,0xcd,0x21,0xb8,0x01,0x4c,0xcd,0x21,0x54,0x68,
536 0x69,0x73,0x20,0x70,0x72,0x6f,0x67,0x72,0x61,0x6d,0x20,0x63,0x61,0x6e,0x6e,0x6f,
537 0x74,0x20,0x62,0x65,0x20,0x72,0x75,0x6e,0x20,0x69,0x6e,0x20,0x44,0x4f,0x53,0x20,
538 0x6d,0x6f,0x64,0x65,0x2e,0x0d,0x0d,0x0a,0x24,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
539 },
540 0x00004550, /* DWORD nt_sig = IMAGE_NT_SIGNATURE */
541 {
542 /* IMAGE_FILE_HEADER filehdr */
543 IMAGE_FILE_MACHINE, /*WORD Machine; */
544 0x0003, /*WORD NumberOfSections; */
545 0x00000000, /*DWORD TimeDateStamp; */
546 0x00000000, /*DWORD PointerToSymbolTable; */
547 0x00000000, /*DWORD NumberOfSymbols; */
548 #if defined(TCC_TARGET_X86_64)
549 0x00F0, /*WORD SizeOfOptionalHeader; */
550 0x022F /*WORD Characteristics; */
551 #define CHARACTERISTICS_DLL 0x222E
552 #elif defined(TCC_TARGET_I386)
553 0x00E0, /*WORD SizeOfOptionalHeader; */
554 0x030F /*WORD Characteristics; */
555 #define CHARACTERISTICS_DLL 0x230E
556 #elif defined(TCC_TARGET_ARM)
557 0x00E0, /*WORD SizeOfOptionalHeader; */
558 0x010F, /*WORD Characteristics; */
559 #define CHARACTERISTICS_DLL 0x230F
560 #endif
561 },{
562 /* IMAGE_OPTIONAL_HEADER opthdr */
563 /* Standard fields. */
564 #ifdef TCC_TARGET_X86_64
565 0x020B, /*WORD Magic; */
566 #else
567 0x010B, /*WORD Magic; */
568 #endif
569 0x06, /*BYTE MajorLinkerVersion; */
570 0x00, /*BYTE MinorLinkerVersion; */
571 0x00000000, /*DWORD SizeOfCode; */
572 0x00000000, /*DWORD SizeOfInitializedData; */
573 0x00000000, /*DWORD SizeOfUninitializedData; */
574 0x00000000, /*DWORD AddressOfEntryPoint; */
575 0x00000000, /*DWORD BaseOfCode; */
576 #ifndef TCC_TARGET_X86_64
577 0x00000000, /*DWORD BaseOfData; */
578 #endif
579 /* NT additional fields. */
580 #if defined(TCC_TARGET_ARM)
581 0x00100000, /*DWORD ImageBase; */
582 #else
583 0x00400000, /*DWORD ImageBase; */
584 #endif
585 0x00001000, /*DWORD SectionAlignment; */
586 0x00000200, /*DWORD FileAlignment; */
587 0x0004, /*WORD MajorOperatingSystemVersion; */
588 0x0000, /*WORD MinorOperatingSystemVersion; */
589 0x0000, /*WORD MajorImageVersion; */
590 0x0000, /*WORD MinorImageVersion; */
591 0x0004, /*WORD MajorSubsystemVersion; */
592 0x0000, /*WORD MinorSubsystemVersion; */
593 0x00000000, /*DWORD Win32VersionValue; */
594 0x00000000, /*DWORD SizeOfImage; */
595 0x00000200, /*DWORD SizeOfHeaders; */
596 0x00000000, /*DWORD CheckSum; */
597 0x0002, /*WORD Subsystem; */
598 0x0000, /*WORD DllCharacteristics; */
599 0x00100000, /*DWORD SizeOfStackReserve; */
600 0x00001000, /*DWORD SizeOfStackCommit; */
601 0x00100000, /*DWORD SizeOfHeapReserve; */
602 0x00001000, /*DWORD SizeOfHeapCommit; */
603 0x00000000, /*DWORD LoaderFlags; */
604 0x00000010, /*DWORD NumberOfRvaAndSizes; */
605
606 /* IMAGE_DATA_DIRECTORY DataDirectory[16]; */
607 {{0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0},
608 {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}}
609 }};
610
611 struct pe_header pe_header = pe_template;
612
613 int i;
614 struct pe_file pf = {0};
615 DWORD file_offset;
616 struct section_info *si;
617 IMAGE_SECTION_HEADER *psh;
618 TCCState *s1 = pe->s1;
619
620 pf.op = fopen(pe->filename, "wb");
621 if (NULL == pf.op) {
622 tcc_error_noabort("could not write '%s': %s", pe->filename, strerror(errno));
623 return -1;
624 }
625
626 pe->sizeofheaders = pe_file_align(pe,
627 sizeof (struct pe_header)
628 + pe->sec_count * sizeof (IMAGE_SECTION_HEADER)
629 );
630
631 file_offset = pe->sizeofheaders;
632
633 if (2 == pe->s1->verbose)
634 printf("-------------------------------"
635 "\n virt file size section" "\n");
636 for (i = 0; i < pe->sec_count; ++i) {
637 DWORD addr, size;
638 const char *sh_name;
639
640 si = pe->sec_info[i];
641 sh_name = si->name;
642 addr = si->sh_addr - pe->imagebase;
643 size = si->sh_size;
644 psh = &si->ish;
645
646 if (2 == pe->s1->verbose)
647 printf("%6x %6x %6x %s\n",
648 (unsigned)addr, (unsigned)file_offset, (unsigned)size, sh_name);
649
650 switch (si->cls) {
651 case sec_text:
652 if (!pe_header.opthdr.BaseOfCode)
653 pe_header.opthdr.BaseOfCode = addr;
654 break;
655
656 case sec_data:
657 #ifndef TCC_TARGET_X86_64
658 if (!pe_header.opthdr.BaseOfData)
659 pe_header.opthdr.BaseOfData = addr;
660 #endif
661 break;
662
663 case sec_bss:
664 break;
665
666 case sec_reloc:
667 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_BASERELOC, addr, size);
668 break;
669
670 case sec_rsrc:
671 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_RESOURCE, addr, size);
672 break;
673
674 case sec_pdata:
675 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_EXCEPTION, addr, size);
676 break;
677 }
678
679 if (pe->imp_size) {
680 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_IMPORT,
681 pe->imp_offs, pe->imp_size);
682 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_IAT,
683 pe->iat_offs, pe->iat_size);
684 }
685 if (pe->exp_size) {
686 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_EXPORT,
687 pe->exp_offs, pe->exp_size);
688 }
689
690 memcpy(psh->Name, sh_name, umin(strlen(sh_name), sizeof psh->Name));
691
692 psh->Characteristics = si->pe_flags;
693 psh->VirtualAddress = addr;
694 psh->Misc.VirtualSize = size;
695 pe_header.opthdr.SizeOfImage =
696 umax(pe_virtual_align(pe, size + addr), pe_header.opthdr.SizeOfImage);
697
698 if (si->data_size) {
699 psh->PointerToRawData = file_offset;
700 file_offset = pe_file_align(pe, file_offset + si->data_size);
701 psh->SizeOfRawData = file_offset - psh->PointerToRawData;
702 if (si->cls == sec_text)
703 pe_header.opthdr.SizeOfCode += psh->SizeOfRawData;
704 else
705 pe_header.opthdr.SizeOfInitializedData += psh->SizeOfRawData;
706 }
707 }
708
709 //pe_header.filehdr.TimeDateStamp = time(NULL);
710 pe_header.filehdr.NumberOfSections = pe->sec_count;
711 pe_header.opthdr.AddressOfEntryPoint = pe->start_addr;
712 pe_header.opthdr.SizeOfHeaders = pe->sizeofheaders;
713 pe_header.opthdr.ImageBase = pe->imagebase;
714 pe_header.opthdr.Subsystem = pe->subsystem;
715 if (pe->s1->pe_stack_size)
716 pe_header.opthdr.SizeOfStackReserve = pe->s1->pe_stack_size;
717 if (PE_DLL == pe->type)
718 pe_header.filehdr.Characteristics = CHARACTERISTICS_DLL;
719 pe_header.filehdr.Characteristics |= pe->s1->pe_characteristics;
720
721 pe_fwrite(&pe_header, sizeof pe_header, &pf);
722 for (i = 0; i < pe->sec_count; ++i)
723 pe_fwrite(&pe->sec_info[i]->ish, sizeof(IMAGE_SECTION_HEADER), &pf);
724
725 file_offset = pe->sizeofheaders;
726 for (i = 0; i < pe->sec_count; ++i) {
727 Section *s;
728 si = pe->sec_info[i];
729 if (!si->data_size)
730 continue;
731 for (s = si->sec; s; s = s->prev) {
732 pe_fpad(&pf, file_offset);
733 pe_fwrite(s->data, s->data_offset, &pf);
734 if (s->prev)
735 file_offset += s->prev->sh_addr - s->sh_addr;
736 }
737 file_offset = si->ish.PointerToRawData + si->ish.SizeOfRawData;
738 pe_fpad(&pf, file_offset);
739 }
740
741 pf.sum += file_offset;
742 fseek(pf.op, offsetof(struct pe_header, opthdr.CheckSum), SEEK_SET);
743 pe_fwrite(&pf.sum, sizeof (DWORD), &pf);
744
745 fclose (pf.op);
746 #ifndef _WIN32
747 chmod(pe->filename, 0777);
748 #endif
749
750 if (2 == pe->s1->verbose)
751 printf("-------------------------------\n");
752 if (pe->s1->verbose)
753 printf("<- %s (%u bytes)\n", pe->filename, (unsigned)file_offset);
754
755 return 0;
756 }
757
758 /*----------------------------------------------------------------------------*/
759
760 static struct import_symbol *pe_add_import(struct pe_info *pe, int sym_index)
761 {
762 int i;
763 int dll_index;
764 struct pe_import_info *p;
765 struct import_symbol *s;
766 ElfW(Sym) *isym;
767
768 isym = (ElfW(Sym) *)pe->s1->dynsymtab_section->data + sym_index;
769 dll_index = isym->st_size;
770
771 i = dynarray_assoc ((void**)pe->imp_info, pe->imp_count, dll_index);
772 if (-1 != i) {
773 p = pe->imp_info[i];
774 goto found_dll;
775 }
776 p = tcc_mallocz(sizeof *p);
777 p->dll_index = dll_index;
778 dynarray_add(&pe->imp_info, &pe->imp_count, p);
779
780 found_dll:
781 i = dynarray_assoc ((void**)p->symbols, p->sym_count, sym_index);
782 if (-1 != i)
783 return p->symbols[i];
784
785 s = tcc_mallocz(sizeof *s);
786 dynarray_add(&p->symbols, &p->sym_count, s);
787 s->sym_index = sym_index;
788 return s;
789 }
790
791 void pe_free_imports(struct pe_info *pe)
792 {
793 int i;
794 for (i = 0; i < pe->imp_count; ++i) {
795 struct pe_import_info *p = pe->imp_info[i];
796 dynarray_reset(&p->symbols, &p->sym_count);
797 }
798 dynarray_reset(&pe->imp_info, &pe->imp_count);
799 }
800
801 /*----------------------------------------------------------------------------*/
802 static void pe_build_imports(struct pe_info *pe)
803 {
804 int thk_ptr, ent_ptr, dll_ptr, sym_cnt, i;
805 DWORD rva_base = pe->thunk->sh_addr - pe->imagebase;
806 int ndlls = pe->imp_count;
807 TCCState *s1 = pe->s1;
808
809 for (sym_cnt = i = 0; i < ndlls; ++i)
810 sym_cnt += pe->imp_info[i]->sym_count;
811
812 if (0 == sym_cnt)
813 return;
814
815 pe_align_section(pe->thunk, 16);
816 pe->imp_size = (ndlls + 1) * sizeof(IMAGE_IMPORT_DESCRIPTOR);
817 pe->iat_size = (sym_cnt + ndlls) * sizeof(ADDR3264);
818 dll_ptr = pe->thunk->data_offset;
819 thk_ptr = dll_ptr + pe->imp_size;
820 ent_ptr = thk_ptr + pe->iat_size;
821 pe->imp_offs = dll_ptr + rva_base;
822 pe->iat_offs = thk_ptr + rva_base;
823 section_ptr_add(pe->thunk, pe->imp_size + 2*pe->iat_size);
824
825 for (i = 0; i < pe->imp_count; ++i) {
826 IMAGE_IMPORT_DESCRIPTOR *hdr;
827 int k, n, dllindex;
828 ADDR3264 v;
829 struct pe_import_info *p = pe->imp_info[i];
830 const char *name;
831 DLLReference *dllref;
832
833 dllindex = p->dll_index;
834 if (dllindex)
835 name = tcc_basename((dllref = pe->s1->loaded_dlls[dllindex-1])->name);
836 else
837 name = "", dllref = NULL;
838
839 /* put the dll name into the import header */
840 v = put_elf_str(pe->thunk, name);
841 hdr = (IMAGE_IMPORT_DESCRIPTOR*)(pe->thunk->data + dll_ptr);
842 hdr->FirstThunk = thk_ptr + rva_base;
843 hdr->OriginalFirstThunk = ent_ptr + rva_base;
844 hdr->Name = v + rva_base;
845
846 for (k = 0, n = p->sym_count; k <= n; ++k) {
847 if (k < n) {
848 int iat_index = p->symbols[k]->iat_index;
849 int sym_index = p->symbols[k]->sym_index;
850 ElfW(Sym) *imp_sym = (ElfW(Sym) *)pe->s1->dynsymtab_section->data + sym_index;
851 ElfW(Sym) *org_sym = (ElfW(Sym) *)symtab_section->data + iat_index;
852 const char *name = (char*)pe->s1->dynsymtab_section->link->data + imp_sym->st_name;
853 int ordinal;
854
855 org_sym->st_value = thk_ptr;
856 org_sym->st_shndx = pe->thunk->sh_num;
857
858 if (dllref)
859 v = 0, ordinal = imp_sym->st_value; /* ordinal from pe_load_def */
860 else
861 ordinal = 0, v = imp_sym->st_value; /* address from tcc_add_symbol() */
862
863 #ifdef TCC_IS_NATIVE
864 if (pe->type == PE_RUN) {
865 if (dllref) {
866 if ( !dllref->handle )
867 dllref->handle = LoadLibrary(dllref->name);
868 v = (ADDR3264)GetProcAddress(dllref->handle, ordinal?(char*)0+ordinal:name);
869 }
870 if (!v)
871 tcc_error_noabort("could not resolve symbol '%s'", name);
872 } else
873 #endif
874 if (ordinal) {
875 v = ordinal | (ADDR3264)1 << (sizeof(ADDR3264)*8 - 1);
876 } else {
877 v = pe->thunk->data_offset + rva_base;
878 section_ptr_add(pe->thunk, sizeof(WORD)); /* hint, not used */
879 put_elf_str(pe->thunk, name);
880 }
881
882 } else {
883 v = 0; /* last entry is zero */
884 }
885
886 *(ADDR3264*)(pe->thunk->data+thk_ptr) =
887 *(ADDR3264*)(pe->thunk->data+ent_ptr) = v;
888 thk_ptr += sizeof (ADDR3264);
889 ent_ptr += sizeof (ADDR3264);
890 }
891 dll_ptr += sizeof(IMAGE_IMPORT_DESCRIPTOR);
892 }
893 }
894
895 /* ------------------------------------------------------------- */
896
897 struct pe_sort_sym
898 {
899 int index;
900 const char *name;
901 };
902
903 static int sym_cmp(const void *va, const void *vb)
904 {
905 const char *ca = (*(struct pe_sort_sym**)va)->name;
906 const char *cb = (*(struct pe_sort_sym**)vb)->name;
907 return strcmp(ca, cb);
908 }
909
910 static void pe_build_exports(struct pe_info *pe)
911 {
912 ElfW(Sym) *sym;
913 int sym_index, sym_end;
914 DWORD rva_base, base_o, func_o, name_o, ord_o, str_o;
915 IMAGE_EXPORT_DIRECTORY *hdr;
916 int sym_count, ord;
917 struct pe_sort_sym **sorted, *p;
918 TCCState *s1 = pe->s1;
919
920 FILE *op;
921 char buf[260];
922 const char *dllname;
923 const char *name;
924
925 rva_base = pe->thunk->sh_addr - pe->imagebase;
926 sym_count = 0, sorted = NULL, op = NULL;
927
928 sym_end = symtab_section->data_offset / sizeof(ElfW(Sym));
929 for (sym_index = 1; sym_index < sym_end; ++sym_index) {
930 sym = (ElfW(Sym)*)symtab_section->data + sym_index;
931 name = pe_export_name(pe->s1, sym);
932 if (sym->st_other & ST_PE_EXPORT) {
933 p = tcc_malloc(sizeof *p);
934 p->index = sym_index;
935 p->name = name;
936 dynarray_add(&sorted, &sym_count, p);
937 }
938 #if 0
939 if (sym->st_other & ST_PE_EXPORT)
940 printf("export: %s\n", name);
941 if (sym->st_other & ST_PE_STDCALL)
942 printf("stdcall: %s\n", name);
943 #endif
944 }
945
946 if (0 == sym_count)
947 return;
948
949 qsort (sorted, sym_count, sizeof *sorted, sym_cmp);
950
951 pe_align_section(pe->thunk, 16);
952 dllname = tcc_basename(pe->filename);
953
954 base_o = pe->thunk->data_offset;
955 func_o = base_o + sizeof(IMAGE_EXPORT_DIRECTORY);
956 name_o = func_o + sym_count * sizeof (DWORD);
957 ord_o = name_o + sym_count * sizeof (DWORD);
958 str_o = ord_o + sym_count * sizeof(WORD);
959
960 hdr = section_ptr_add(pe->thunk, str_o - base_o);
961 hdr->Characteristics = 0;
962 hdr->Base = 1;
963 hdr->NumberOfFunctions = sym_count;
964 hdr->NumberOfNames = sym_count;
965 hdr->AddressOfFunctions = func_o + rva_base;
966 hdr->AddressOfNames = name_o + rva_base;
967 hdr->AddressOfNameOrdinals = ord_o + rva_base;
968 hdr->Name = str_o + rva_base;
969 put_elf_str(pe->thunk, dllname);
970
971 #if 1
972 /* automatically write exports to <output-filename>.def */
973 pstrcpy(buf, sizeof buf, pe->filename);
974 strcpy(tcc_fileextension(buf), ".def");
975 op = fopen(buf, "wb");
976 if (NULL == op) {
977 tcc_error_noabort("could not create '%s': %s", buf, strerror(errno));
978 } else {
979 fprintf(op, "LIBRARY %s\n\nEXPORTS\n", dllname);
980 if (pe->s1->verbose)
981 printf("<- %s (%d symbol%s)\n", buf, sym_count, &"s"[sym_count < 2]);
982 }
983 #endif
984
985 for (ord = 0; ord < sym_count; ++ord)
986 {
987 p = sorted[ord], sym_index = p->index, name = p->name;
988 /* insert actual address later in relocate_sections() */
989 put_elf_reloc(symtab_section, pe->thunk,
990 func_o, R_XXX_RELATIVE, sym_index);
991 *(DWORD*)(pe->thunk->data + name_o)
992 = pe->thunk->data_offset + rva_base;
993 *(WORD*)(pe->thunk->data + ord_o)
994 = ord;
995 put_elf_str(pe->thunk, name);
996 func_o += sizeof (DWORD);
997 name_o += sizeof (DWORD);
998 ord_o += sizeof (WORD);
999 if (op)
1000 fprintf(op, "%s\n", name);
1001 }
1002
1003 pe->exp_offs = base_o + rva_base;
1004 pe->exp_size = pe->thunk->data_offset - base_o;
1005 dynarray_reset(&sorted, &sym_count);
1006 if (op)
1007 fclose(op);
1008 }
1009
1010 /* ------------------------------------------------------------- */
1011 static void pe_build_reloc (struct pe_info *pe)
1012 {
1013 DWORD offset, block_ptr, sh_addr, addr;
1014 int count, i;
1015 ElfW_Rel *rel, *rel_end;
1016 Section *s = NULL, *sr;
1017 struct pe_reloc_header *hdr;
1018
1019 sh_addr = offset = block_ptr = count = i = 0;
1020 rel = rel_end = NULL;
1021
1022 for(;;) {
1023 if (rel < rel_end) {
1024 int type = ELFW(R_TYPE)(rel->r_info);
1025 addr = rel->r_offset + sh_addr;
1026 ++ rel;
1027 if (type != REL_TYPE_DIRECT)
1028 continue;
1029 if (count == 0) { /* new block */
1030 block_ptr = pe->reloc->data_offset;
1031 section_ptr_add(pe->reloc, sizeof(struct pe_reloc_header));
1032 offset = addr & 0xFFFFFFFF<<12;
1033 }
1034 if ((addr -= offset) < (1<<12)) { /* one block spans 4k addresses */
1035 WORD *wp = section_ptr_add(pe->reloc, sizeof (WORD));
1036 *wp = addr | PE_IMAGE_REL<<12;
1037 ++count;
1038 continue;
1039 }
1040 -- rel;
1041
1042 } else if (s) {
1043 sr = s->reloc;
1044 if (sr) {
1045 rel = (ElfW_Rel *)sr->data;
1046 rel_end = (ElfW_Rel *)(sr->data + sr->data_offset);
1047 sh_addr = s->sh_addr;
1048 }
1049 s = s->prev;
1050 continue;
1051
1052 } else if (i < pe->sec_count) {
1053 s = pe->sec_info[i]->sec, ++i;
1054 continue;
1055
1056 } else if (!count)
1057 break;
1058
1059 /* fill the last block and ready for a new one */
1060 if (count & 1) /* align for DWORDS */
1061 section_ptr_add(pe->reloc, sizeof(WORD)), ++count;
1062 hdr = (struct pe_reloc_header *)(pe->reloc->data + block_ptr);
1063 hdr -> offset = offset - pe->imagebase;
1064 hdr -> size = count * sizeof(WORD) + sizeof(struct pe_reloc_header);
1065 count = 0;
1066 }
1067 }
1068
1069 /* ------------------------------------------------------------- */
1070 static int pe_section_class(Section *s)
1071 {
1072 int type, flags;
1073 const char *name;
1074 type = s->sh_type;
1075 flags = s->sh_flags;
1076 name = s->name;
1077 if (0 == memcmp(name, ".stab", 5)) {
1078 if (0 == s->s1->do_debug)
1079 return sec_last;
1080 return name[5] ? sec_stabstr : sec_stab;
1081 }
1082 if (flags & SHF_ALLOC) {
1083 if (type == SHT_PROGBITS
1084 || type == SHT_INIT_ARRAY
1085 || type == SHT_FINI_ARRAY) {
1086 if (flags & SHF_EXECINSTR)
1087 return sec_text;
1088 if (flags & SHF_WRITE)
1089 return sec_data;
1090 if (0 == strcmp(name, ".rsrc"))
1091 return sec_rsrc;
1092 if (0 == strcmp(name, ".iedat"))
1093 return sec_idata;
1094 if (0 == strcmp(name, ".pdata"))
1095 return sec_pdata;
1096 return sec_rdata;
1097 } else if (type == SHT_NOBITS) {
1098 return sec_bss;
1099 }
1100 return sec_other;
1101 } else {
1102 if (0 == strcmp(name, ".reloc"))
1103 return sec_reloc;
1104 }
1105 return sec_last;
1106 }
1107
1108 static int pe_assign_addresses (struct pe_info *pe)
1109 {
1110 int i, k, n, c, nbs;
1111 ADDR3264 addr;
1112 int *sec_order, *sec_cls;
1113 struct section_info *si;
1114 Section *s;
1115 TCCState *s1 = pe->s1;
1116
1117 if (PE_DLL == pe->type)
1118 pe->reloc = new_section(pe->s1, ".reloc", SHT_PROGBITS, 0);
1119 //pe->thunk = new_section(pe->s1, ".iedat", SHT_PROGBITS, SHF_ALLOC);
1120
1121 nbs = s1->nb_sections;
1122 sec_order = tcc_mallocz(2 * sizeof (int) * nbs);
1123 sec_cls = sec_order + nbs;
1124 for (i = 1; i < nbs; ++i) {
1125 s = s1->sections[i];
1126 k = pe_section_class(s);
1127 for (n = i; n > 1 && k < (c = sec_cls[n - 1]); --n)
1128 sec_cls[n] = c, sec_order[n] = sec_order[n - 1];
1129 sec_cls[n] = k, sec_order[n] = i;
1130 }
1131 si = NULL;
1132 addr = pe->imagebase + 1;
1133
1134 for (i = 1; (c = sec_cls[i]) < sec_last; ++i) {
1135 s = s1->sections[sec_order[i]];
1136
1137 if (PE_MERGE_DATA && c == sec_bss)
1138 c = sec_data;
1139
1140 if (si && c == si->cls) {
1141 /* merge with previous section */
1142 s->sh_addr = addr = ((addr - 1) | (16 - 1)) + 1;
1143 } else {
1144 si = NULL;
1145 s->sh_addr = addr = pe_virtual_align(pe, addr);
1146 }
1147
1148 if (NULL == pe->thunk
1149 && c == (data_section == rodata_section ? sec_data : sec_rdata))
1150 pe->thunk = s;
1151
1152 if (s == pe->thunk) {
1153 pe_build_imports(pe);
1154 pe_build_exports(pe);
1155 }
1156 if (s == pe->reloc)
1157 pe_build_reloc (pe);
1158
1159 if (0 == s->data_offset)
1160 continue;
1161
1162 if (si)
1163 goto add_section;
1164
1165 si = tcc_mallocz(sizeof *si);
1166 dynarray_add(&pe->sec_info, &pe->sec_count, si);
1167
1168 strcpy(si->name, s->name);
1169 si->cls = c;
1170 si->sh_addr = addr;
1171
1172 si->pe_flags = IMAGE_SCN_MEM_READ;
1173 if (s->sh_flags & SHF_EXECINSTR)
1174 si->pe_flags |= IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_CNT_CODE;
1175 else if (s->sh_type == SHT_NOBITS)
1176 si->pe_flags |= IMAGE_SCN_CNT_UNINITIALIZED_DATA;
1177 else
1178 si->pe_flags |= IMAGE_SCN_CNT_INITIALIZED_DATA;
1179 if (s->sh_flags & SHF_WRITE)
1180 si->pe_flags |= IMAGE_SCN_MEM_WRITE;
1181 if (0 == (s->sh_flags & SHF_ALLOC))
1182 si->pe_flags |= IMAGE_SCN_MEM_DISCARDABLE;
1183
1184 add_section:
1185 addr += s->data_offset;
1186 si->sh_size = addr - si->sh_addr;
1187 if (s->sh_type != SHT_NOBITS) {
1188 Section **ps = &si->sec;
1189 while (*ps)
1190 ps = &(*ps)->prev;
1191 *ps = s, s->prev = NULL;
1192 si->data_size = si->sh_size;
1193 }
1194 //printf("%08x %05x %08x %s\n", si->sh_addr, si->sh_size, si->pe_flags, s->name);
1195 }
1196 #if 0
1197 for (i = 1; i < nbs; ++i) {
1198 Section *s = s1->sections[sec_order[i]];
1199 int type = s->sh_type;
1200 int flags = s->sh_flags;
1201 printf("section %-16s %-10s %p %04x %s,%s,%s\n",
1202 s->name,
1203 type == SHT_PROGBITS ? "progbits" :
1204 type == SHT_INIT_ARRAY ? "initarr" :
1205 type == SHT_FINI_ARRAY ? "finiarr" :
1206 type == SHT_NOBITS ? "nobits" :
1207 type == SHT_SYMTAB ? "symtab" :
1208 type == SHT_STRTAB ? "strtab" :
1209 type == SHT_RELX ? "rel" : "???",
1210 s->sh_addr,
1211 (unsigned)s->data_offset,
1212 flags & SHF_ALLOC ? "alloc" : "",
1213 flags & SHF_WRITE ? "write" : "",
1214 flags & SHF_EXECINSTR ? "exec" : ""
1215 );
1216 fflush(stdout);
1217 }
1218 s1->verbose = 2;
1219 #endif
1220 tcc_free(sec_order);
1221 return 0;
1222 }
1223
1224 /*----------------------------------------------------------------------------*/
1225
1226 static int pe_isafunc(TCCState *s1, int sym_index)
1227 {
1228 Section *sr = text_section->reloc;
1229 ElfW_Rel *rel, *rel_end;
1230 ElfW(Addr)info = ELFW(R_INFO)(sym_index, R_XXX_FUNCCALL);
1231 #ifdef R_XXX_FUNCCALL2
1232 ElfW(Addr)info2 = ELFW(R_INFO)(sym_index, R_XXX_FUNCCALL2);
1233 #endif
1234 if (!sr)
1235 return 0;
1236 rel_end = (ElfW_Rel *)(sr->data + sr->data_offset);
1237 for (rel = (ElfW_Rel *)sr->data; rel < rel_end; rel++) {
1238 if (rel->r_info == info)
1239 return 1;
1240 #ifdef R_XXX_FUNCCALL2
1241 if (rel->r_info == info2)
1242 return 1;
1243 #endif
1244 }
1245 return 0;
1246 }
1247
1248 /*----------------------------------------------------------------------------*/
1249 static int pe_check_symbols(struct pe_info *pe)
1250 {
1251 ElfW(Sym) *sym;
1252 int sym_index, sym_end;
1253 int ret = 0;
1254 TCCState *s1 = pe->s1;
1255
1256 pe_align_section(text_section, 8);
1257
1258 sym_end = symtab_section->data_offset / sizeof(ElfW(Sym));
1259 for (sym_index = 1; sym_index < sym_end; ++sym_index) {
1260
1261 sym = (ElfW(Sym) *)symtab_section->data + sym_index;
1262 if (sym->st_shndx == SHN_UNDEF) {
1263
1264 const char *name = (char*)symtab_section->link->data + sym->st_name;
1265 unsigned type = ELFW(ST_TYPE)(sym->st_info);
1266 int imp_sym = pe_find_import(pe->s1, sym);
1267 struct import_symbol *is;
1268
1269 if (imp_sym <= 0)
1270 goto not_found;
1271
1272 if (type == STT_NOTYPE) {
1273 /* symbols from assembler have no type, find out which */
1274 if (pe_isafunc(s1, sym_index))
1275 type = STT_FUNC;
1276 else
1277 type = STT_OBJECT;
1278 }
1279
1280 is = pe_add_import(pe, imp_sym);
1281
1282 if (type == STT_FUNC) {
1283 unsigned offset = is->thk_offset;
1284 if (offset) {
1285 /* got aliased symbol, like stricmp and _stricmp */
1286 } else {
1287 char buffer[100];
1288 unsigned char *p;
1289
1290 /* add a helper symbol, will be patched later in
1291 pe_build_imports */
1292 sprintf(buffer, "IAT.%s", name);
1293 is->iat_index = put_elf_sym(
1294 symtab_section, 0, sizeof(DWORD),
1295 ELFW(ST_INFO)(STB_GLOBAL, STT_OBJECT),
1296 0, SHN_UNDEF, buffer);
1297
1298 offset = text_section->data_offset;
1299 is->thk_offset = offset;
1300
1301 /* add the 'jmp IAT[x]' instruction */
1302 #ifdef TCC_TARGET_ARM
1303 p = section_ptr_add(text_section, 8+4); // room for code and address
1304 write32le(p + 0, 0xE59FC000); // arm code ldr ip, [pc] ; PC+8+0 = 0001xxxx
1305 write32le(p + 4, 0xE59CF000); // arm code ldr pc, [ip]
1306 put_elf_reloc(symtab_section, text_section,
1307 offset + 8, R_XXX_THUNKFIX, is->iat_index); // offset to IAT position
1308 #else
1309 p = section_ptr_add(text_section, 8);
1310 write16le(p, 0x25FF);
1311 #ifdef TCC_TARGET_X86_64
1312 write32le(p + 2, (DWORD)-4);
1313 #endif
1314 put_elf_reloc(symtab_section, text_section,
1315 offset + 2, R_XXX_THUNKFIX, is->iat_index);
1316 #endif
1317 }
1318 /* tcc_realloc might have altered sym's address */
1319 sym = (ElfW(Sym) *)symtab_section->data + sym_index;
1320
1321 /* patch the original symbol */
1322 sym->st_value = offset;
1323 sym->st_shndx = text_section->sh_num;
1324 sym->st_other &= ~ST_PE_EXPORT; /* do not export */
1325 continue;
1326 }
1327
1328 if (type == STT_OBJECT) { /* data, ptr to that should be */
1329 if (0 == is->iat_index) {
1330 /* original symbol will be patched later in pe_build_imports */
1331 is->iat_index = sym_index;
1332 continue;
1333 }
1334 }
1335
1336 not_found:
1337 if (ELFW(ST_BIND)(sym->st_info) == STB_WEAK)
1338 /* STB_WEAK undefined symbols are accepted */
1339 continue;
1340 tcc_error_noabort("undefined symbol '%s'%s", name,
1341 imp_sym < 0 ? ", missing __declspec(dllimport)?":"");
1342 ret = -1;
1343
1344 } else if (pe->s1->rdynamic
1345 && ELFW(ST_BIND)(sym->st_info) != STB_LOCAL) {
1346 /* if -rdynamic option, then export all non local symbols */
1347 sym->st_other |= ST_PE_EXPORT;
1348 }
1349 }
1350 return ret;
1351 }
1352
1353 /*----------------------------------------------------------------------------*/
1354 #if PE_PRINT_SECTIONS
1355 static void pe_print_section(FILE * f, Section * s)
1356 {
1357 /* just if you're curious */
1358 BYTE *p, *e, b;
1359 int i, n, l, m;
1360 p = s->data;
1361 e = s->data + s->data_offset;
1362 l = e - p;
1363
1364 fprintf(f, "section \"%s\"", s->name);
1365 if (s->link)
1366 fprintf(f, "\nlink \"%s\"", s->link->name);
1367 if (s->reloc)
1368 fprintf(f, "\nreloc \"%s\"", s->reloc->name);
1369 fprintf(f, "\nv_addr %08X", (unsigned)s->sh_addr);
1370 fprintf(f, "\ncontents %08X", (unsigned)l);
1371 fprintf(f, "\n\n");
1372
1373 if (s->sh_type == SHT_NOBITS)
1374 return;
1375
1376 if (0 == l)
1377 return;
1378
1379 if (s->sh_type == SHT_SYMTAB)
1380 m = sizeof(ElfW(Sym));
1381 else if (s->sh_type == SHT_RELX)
1382 m = sizeof(ElfW_Rel);
1383 else
1384 m = 16;
1385
1386 fprintf(f, "%-8s", "offset");
1387 for (i = 0; i < m; ++i)
1388 fprintf(f, " %02x", i);
1389 n = 56;
1390
1391 if (s->sh_type == SHT_SYMTAB || s->sh_type == SHT_RELX) {
1392 const char *fields1[] = {
1393 "name",
1394 "value",
1395 "size",
1396 "bind",
1397 "type",
1398 "other",
1399 "shndx",
1400 NULL
1401 };
1402
1403 const char *fields2[] = {
1404 "offs",
1405 "type",
1406 "symb",
1407 NULL
1408 };
1409
1410 const char **p;
1411
1412 if (s->sh_type == SHT_SYMTAB)
1413 p = fields1, n = 106;
1414 else
1415 p = fields2, n = 58;
1416
1417 for (i = 0; p[i]; ++i)
1418 fprintf(f, "%6s", p[i]);
1419 fprintf(f, " symbol");
1420 }
1421
1422 fprintf(f, "\n");
1423 for (i = 0; i < n; ++i)
1424 fprintf(f, "-");
1425 fprintf(f, "\n");
1426
1427 for (i = 0; i < l;)
1428 {
1429 fprintf(f, "%08X", i);
1430 for (n = 0; n < m; ++n) {
1431 if (n + i < l)
1432 fprintf(f, " %02X", p[i + n]);
1433 else
1434 fprintf(f, " ");
1435 }
1436
1437 if (s->sh_type == SHT_SYMTAB) {
1438 ElfW(Sym) *sym = (ElfW(Sym) *) (p + i);
1439 const char *name = s->link->data + sym->st_name;
1440 fprintf(f, " %04X %04X %04X %02X %02X %02X %04X \"%s\"",
1441 (unsigned)sym->st_name,
1442 (unsigned)sym->st_value,
1443 (unsigned)sym->st_size,
1444 (unsigned)ELFW(ST_BIND)(sym->st_info),
1445 (unsigned)ELFW(ST_TYPE)(sym->st_info),
1446 (unsigned)sym->st_other,
1447 (unsigned)sym->st_shndx,
1448 name);
1449
1450 } else if (s->sh_type == SHT_RELX) {
1451 ElfW_Rel *rel = (ElfW_Rel *) (p + i);
1452 ElfW(Sym) *sym =
1453 (ElfW(Sym) *) s->link->data + ELFW(R_SYM)(rel->r_info);
1454 const char *name = s->link->link->data + sym->st_name;
1455 fprintf(f, " %04X %02X %04X \"%s\"",
1456 (unsigned)rel->r_offset,
1457 (unsigned)ELFW(R_TYPE)(rel->r_info),
1458 (unsigned)ELFW(R_SYM)(rel->r_info),
1459 name);
1460 } else {
1461 fprintf(f, " ");
1462 for (n = 0; n < m; ++n) {
1463 if (n + i < l) {
1464 b = p[i + n];
1465 if (b < 32 || b >= 127)
1466 b = '.';
1467 fprintf(f, "%c", b);
1468 }
1469 }
1470 }
1471 i += m;
1472 fprintf(f, "\n");
1473 }
1474 fprintf(f, "\n\n");
1475 }
1476
1477 static void pe_print_sections(TCCState *s1, const char *fname)
1478 {
1479 Section *s;
1480 FILE *f;
1481 int i;
1482 f = fopen(fname, "w");
1483 for (i = 1; i < s1->nb_sections; ++i) {
1484 s = s1->sections[i];
1485 pe_print_section(f, s);
1486 }
1487 pe_print_section(f, s1->dynsymtab_section);
1488 fclose(f);
1489 }
1490 #endif
1491
1492 /* ------------------------------------------------------------- */
1493 /* helper function for load/store to insert one more indirection */
1494
1495 #if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64
1496 ST_FUNC SValue *pe_getimport(SValue *sv, SValue *v2)
1497 {
1498 int r2;
1499 if ((sv->r & (VT_VALMASK|VT_SYM)) != (VT_CONST|VT_SYM) || (sv->r2 != VT_CONST))
1500 return sv;
1501 if (!sv->sym->a.dllimport)
1502 return sv;
1503 // printf("import %04x %04x %04x %s\n", sv->type.t, sv->sym->type.t, sv->r, get_tok_str(sv->sym->v, NULL));
1504 memset(v2, 0, sizeof *v2);
1505 v2->type.t = VT_PTR;
1506 v2->r = VT_CONST | VT_SYM | VT_LVAL;
1507 v2->sym = sv->sym;
1508
1509 r2 = get_reg(RC_INT);
1510 load(r2, v2);
1511 v2->r = r2;
1512 if ((uint32_t)sv->c.i) {
1513 vpushv(v2);
1514 vpushi(sv->c.i);
1515 gen_opi('+');
1516 *v2 = *vtop--;
1517 }
1518 v2->type.t = sv->type.t;
1519 v2->r |= sv->r & VT_LVAL;
1520 return v2;
1521 }
1522 #endif
1523
1524 ST_FUNC int pe_putimport(TCCState *s1, int dllindex, const char *name, addr_t value)
1525 {
1526 return set_elf_sym(
1527 s1->dynsymtab_section,
1528 value,
1529 dllindex, /* st_size */
1530 ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE),
1531 0,
1532 value ? SHN_ABS : SHN_UNDEF,
1533 name
1534 );
1535 }
1536
1537 static int read_mem(int fd, unsigned offset, void *buffer, unsigned len)
1538 {
1539 lseek(fd, offset, SEEK_SET);
1540 return len == read(fd, buffer, len);
1541 }
1542
1543 /* ------------------------------------------------------------- */
1544
1545 static int get_dllexports(int fd, char **pp)
1546 {
1547 int l, i, n, n0, ret;
1548 char *p;
1549
1550 IMAGE_SECTION_HEADER ish;
1551 IMAGE_EXPORT_DIRECTORY ied;
1552 IMAGE_DOS_HEADER dh;
1553 IMAGE_FILE_HEADER ih;
1554 DWORD sig, ref, addr, ptr, namep;
1555
1556 int pef_hdroffset, opt_hdroffset, sec_hdroffset;
1557
1558 n = n0 = 0;
1559 p = NULL;
1560 ret = 1;
1561 if (!read_mem(fd, 0, &dh, sizeof dh))
1562 goto the_end;
1563 if (!read_mem(fd, dh.e_lfanew, &sig, sizeof sig))
1564 goto the_end;
1565 if (sig != 0x00004550)
1566 goto the_end;
1567 pef_hdroffset = dh.e_lfanew + sizeof sig;
1568 if (!read_mem(fd, pef_hdroffset, &ih, sizeof ih))
1569 goto the_end;
1570 opt_hdroffset = pef_hdroffset + sizeof ih;
1571 if (ih.Machine == 0x014C) {
1572 IMAGE_OPTIONAL_HEADER32 oh;
1573 sec_hdroffset = opt_hdroffset + sizeof oh;
1574 if (!read_mem(fd, opt_hdroffset, &oh, sizeof oh))
1575 goto the_end;
1576 if (IMAGE_DIRECTORY_ENTRY_EXPORT >= oh.NumberOfRvaAndSizes)
1577 goto the_end_0;
1578 addr = oh.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress;
1579 } else if (ih.Machine == 0x8664) {
1580 IMAGE_OPTIONAL_HEADER64 oh;
1581 sec_hdroffset = opt_hdroffset + sizeof oh;
1582 if (!read_mem(fd, opt_hdroffset, &oh, sizeof oh))
1583 goto the_end;
1584 if (IMAGE_DIRECTORY_ENTRY_EXPORT >= oh.NumberOfRvaAndSizes)
1585 goto the_end_0;
1586 addr = oh.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress;
1587 } else
1588 goto the_end;
1589
1590 //printf("addr: %08x\n", addr);
1591 for (i = 0; i < ih.NumberOfSections; ++i) {
1592 if (!read_mem(fd, sec_hdroffset + i * sizeof ish, &ish, sizeof ish))
1593 goto the_end;
1594 //printf("vaddr: %08x\n", ish.VirtualAddress);
1595 if (addr >= ish.VirtualAddress && addr < ish.VirtualAddress + ish.SizeOfRawData)
1596 goto found;
1597 }
1598 goto the_end_0;
1599
1600 found:
1601 ref = ish.VirtualAddress - ish.PointerToRawData;
1602 if (!read_mem(fd, addr - ref, &ied, sizeof ied))
1603 goto the_end;
1604
1605 namep = ied.AddressOfNames - ref;
1606 for (i = 0; i < ied.NumberOfNames; ++i) {
1607 if (!read_mem(fd, namep, &ptr, sizeof ptr))
1608 goto the_end;
1609 namep += sizeof ptr;
1610 for (l = 0;;) {
1611 if (n+1 >= n0)
1612 p = tcc_realloc(p, n0 = n0 ? n0 * 2 : 256);
1613 if (!read_mem(fd, ptr - ref + l++, p + n, 1)) {
1614 tcc_free(p), p = NULL;
1615 goto the_end;
1616 }
1617 if (p[n++] == 0)
1618 break;
1619 }
1620 }
1621 if (p)
1622 p[n] = 0;
1623 the_end_0:
1624 ret = 0;
1625 the_end:
1626 *pp = p;
1627 return ret;
1628 }
1629
1630 /* -------------------------------------------------------------
1631 * This is for compiled windows resources in 'coff' format
1632 * as generated by 'windres.exe -O coff ...'.
1633 */
1634
1635 static int pe_load_res(TCCState *s1, int fd)
1636 {
1637 struct pe_rsrc_header hdr;
1638 Section *rsrc_section;
1639 int i, ret = -1, sym_index;
1640 BYTE *ptr;
1641 unsigned offs;
1642
1643 if (!read_mem(fd, 0, &hdr, sizeof hdr))
1644 goto quit;
1645
1646 if (hdr.filehdr.Machine != IMAGE_FILE_MACHINE
1647 || hdr.filehdr.NumberOfSections != 1
1648 || strcmp((char*)hdr.sectionhdr.Name, ".rsrc") != 0)
1649 goto quit;
1650
1651 rsrc_section = new_section(s1, ".rsrc", SHT_PROGBITS, SHF_ALLOC);
1652 ptr = section_ptr_add(rsrc_section, hdr.sectionhdr.SizeOfRawData);
1653 offs = hdr.sectionhdr.PointerToRawData;
1654 if (!read_mem(fd, offs, ptr, hdr.sectionhdr.SizeOfRawData))
1655 goto quit;
1656 offs = hdr.sectionhdr.PointerToRelocations;
1657 sym_index = put_elf_sym(symtab_section, 0, 0, 0, 0, rsrc_section->sh_num, ".rsrc");
1658 for (i = 0; i < hdr.sectionhdr.NumberOfRelocations; ++i) {
1659 struct pe_rsrc_reloc rel;
1660 if (!read_mem(fd, offs, &rel, sizeof rel))
1661 goto quit;
1662 // printf("rsrc_reloc: %x %x %x\n", rel.offset, rel.size, rel.type);
1663 if (rel.type != RSRC_RELTYPE)
1664 goto quit;
1665 put_elf_reloc(symtab_section, rsrc_section,
1666 rel.offset, R_XXX_RELATIVE, sym_index);
1667 offs += sizeof rel;
1668 }
1669 ret = 0;
1670 quit:
1671 return ret;
1672 }
1673
1674 /* ------------------------------------------------------------- */
1675
1676 static char *trimfront(char *p)
1677 {
1678 while ((unsigned char)*p <= ' ' && *p && *p != '\n')
1679 ++p;
1680 return p;
1681 }
1682
1683 /*
1684 static char *trimback(char *a, char *e)
1685 {
1686 while (e > a && (unsigned char)e[-1] <= ' ')
1687 --e;
1688 *e = 0;;
1689 return a;
1690 }*/
1691
1692 static char *get_token(char **s, char *f)
1693 {
1694 char *p = *s, *e;
1695 p = e = trimfront(p);
1696 while ((unsigned char)*e > ' ')
1697 ++e;
1698 *s = trimfront(e);
1699 *f = **s; *e = 0;
1700 return p;
1701 }
1702
1703 static int pe_load_def(TCCState *s1, int fd)
1704 {
1705 int state = 0, ret = -1, dllindex = 0, ord;
1706 char dllname[80], *buf, *line, *p, *x, next;
1707
1708 buf = tcc_load_text(fd);
1709 for (line = buf;; ++line) {
1710 p = get_token(&line, &next);
1711 if (!(*p && *p != ';'))
1712 goto skip;
1713 switch (state) {
1714 case 0:
1715 if (0 != stricmp(p, "LIBRARY") || next == '\n')
1716 goto quit;
1717 pstrcpy(dllname, sizeof dllname, get_token(&line, &next));
1718 ++state;
1719 break;
1720 case 1:
1721 if (0 != stricmp(p, "EXPORTS"))
1722 goto quit;
1723 ++state;
1724 break;
1725 case 2:
1726 dllindex = tcc_add_dllref(s1, dllname, 0)->index;
1727 ++state;
1728 /* fall through */
1729 default:
1730 /* get ordinal and will store in sym->st_value */
1731 ord = 0;
1732 if (next == '@') {
1733 x = get_token(&line, &next);
1734 ord = (int)strtol(x + 1, &x, 10);
1735 }
1736 //printf("token %s ; %s : %d\n", dllname, p, ord);
1737 pe_putimport(s1, dllindex, p, ord);
1738 break;
1739 }
1740 skip:
1741 while ((unsigned char)next > ' ')
1742 get_token(&line, &next);
1743 if (next != '\n')
1744 break;
1745 }
1746 ret = 0;
1747 quit:
1748 tcc_free(buf);
1749 return ret;
1750 }
1751
1752 /* ------------------------------------------------------------- */
1753
1754 static int pe_load_dll(TCCState *s1, int fd, const char *filename)
1755 {
1756 char *p, *q;
1757 int index, ret;
1758
1759 ret = get_dllexports(fd, &p);
1760 if (ret) {
1761 return -1;
1762 } else if (p) {
1763 index = tcc_add_dllref(s1, filename, 0)->index;
1764 for (q = p; *q; q += 1 + strlen(q))
1765 pe_putimport(s1, index, q, 0);
1766 tcc_free(p);
1767 }
1768 return 0;
1769 }
1770
1771 ST_FUNC int pe_load_file(struct TCCState *s1, int fd, const char *filename)
1772 {
1773 int ret = -1;
1774 char buf[10];
1775 if (0 == strcmp(tcc_fileextension(filename), ".def"))
1776 ret = pe_load_def(s1, fd);
1777 else if (pe_load_res(s1, fd) == 0)
1778 ret = 0;
1779 else if (read_mem(fd, 0, buf, 4) && 0 == memcmp(buf, "MZ", 2))
1780 ret = pe_load_dll(s1, fd, filename);
1781 return ret;
1782 }
1783
1784 PUB_FUNC int tcc_get_dllexports(const char *filename, char **pp)
1785 {
1786 int ret, fd = open(filename, O_RDONLY | O_BINARY);
1787 if (fd < 0)
1788 return -1;
1789 ret = get_dllexports(fd, pp);
1790 close(fd);
1791 return ret;
1792 }
1793
1794 /* ------------------------------------------------------------- */
1795 #ifdef TCC_TARGET_X86_64
1796 static unsigned pe_add_uwwind_info(TCCState *s1)
1797 {
1798 if (NULL == s1->uw_pdata) {
1799 s1->uw_pdata = find_section(s1, ".pdata");
1800 s1->uw_pdata->sh_addralign = 4;
1801 }
1802 if (0 == s1->uw_sym)
1803 s1->uw_sym = put_elf_sym(symtab_section, 0, 0, 0, 0, text_section->sh_num, ".uw_base");
1804 if (0 == s1->uw_offs) {
1805 /* As our functions all have the same stackframe, we use one entry for all */
1806 static const unsigned char uw_info[] = {
1807 0x01, // UBYTE: 3 Version , UBYTE: 5 Flags
1808 0x04, // UBYTE Size of prolog
1809 0x02, // UBYTE Count of unwind codes
1810 0x05, // UBYTE: 4 Frame Register (rbp), UBYTE: 4 Frame Register offset (scaled)
1811 // USHORT * n Unwind codes array
1812 // 0x0b, 0x01, 0xff, 0xff, // stack size
1813 0x04, 0x03, // set frame ptr (mov rsp -> rbp)
1814 0x01, 0x50 // push reg (rbp)
1815 };
1816
1817 Section *s = text_section;
1818 unsigned char *p;
1819
1820 section_ptr_add(s, -s->data_offset & 3); /* align */
1821 s1->uw_offs = s->data_offset;
1822 p = section_ptr_add(s, sizeof uw_info);
1823 memcpy(p, uw_info, sizeof uw_info);
1824 }
1825
1826 return s1->uw_offs;
1827 }
1828
1829 ST_FUNC void pe_add_unwind_data(unsigned start, unsigned end, unsigned stack)
1830 {
1831 TCCState *s1 = tcc_state;
1832 Section *pd;
1833 unsigned o, n, d;
1834 struct /* _RUNTIME_FUNCTION */ {
1835 DWORD BeginAddress;
1836 DWORD EndAddress;
1837 DWORD UnwindData;
1838 } *p;
1839
1840 d = pe_add_uwwind_info(s1);
1841 pd = s1->uw_pdata;
1842 o = pd->data_offset;
1843 p = section_ptr_add(pd, sizeof *p);
1844
1845 /* record this function */
1846 p->BeginAddress = start;
1847 p->EndAddress = end;
1848 p->UnwindData = d;
1849
1850 /* put relocations on it */
1851 for (n = o + sizeof *p; o < n; o += sizeof p->BeginAddress)
1852 put_elf_reloc(symtab_section, pd, o, R_XXX_RELATIVE, s1->uw_sym);
1853 }
1854 #endif
1855 /* ------------------------------------------------------------- */
1856 #ifdef TCC_TARGET_X86_64
1857 #define PE_STDSYM(n,s) n
1858 #else
1859 #define PE_STDSYM(n,s) "_" n s
1860 #endif
1861
1862 static void pe_add_runtime(TCCState *s1, struct pe_info *pe)
1863 {
1864 const char *start_symbol;
1865 int pe_type;
1866
1867 if (TCC_OUTPUT_DLL == s1->output_type) {
1868 pe_type = PE_DLL;
1869 start_symbol = PE_STDSYM("__dllstart","@12");
1870 } else {
1871 const char *run_symbol;
1872 if (find_elf_sym(symtab_section, PE_STDSYM("WinMain","@16"))) {
1873 start_symbol = "__winstart";
1874 run_symbol = "__runwinmain";
1875 pe_type = PE_GUI;
1876 } else if (find_elf_sym(symtab_section, PE_STDSYM("wWinMain","@16"))) {
1877 start_symbol = "__wwinstart";
1878 run_symbol = "__runwwinmain";
1879 pe_type = PE_GUI;
1880 } else if (find_elf_sym(symtab_section, "wmain")) {
1881 start_symbol = "__wstart";
1882 run_symbol = "__runwmain";
1883 pe_type = PE_EXE;
1884 } else {
1885 start_symbol = "__start";
1886 run_symbol = "__runmain";
1887 pe_type = PE_EXE;
1888
1889 }
1890 if (TCC_OUTPUT_MEMORY == s1->output_type)
1891 start_symbol = run_symbol;
1892 }
1893
1894 pe->start_symbol = start_symbol + 1;
1895 if (!s1->leading_underscore || strchr(start_symbol, '@'))
1896 ++start_symbol;
1897
1898 #ifdef CONFIG_TCC_BACKTRACE
1899 if (s1->do_backtrace) {
1900 #ifdef CONFIG_TCC_BCHECK
1901 if (s1->do_bounds_check && s1->output_type != TCC_OUTPUT_DLL)
1902 tcc_add_support(s1, "bcheck.o");
1903 #endif
1904 if (s1->output_type == TCC_OUTPUT_EXE)
1905 tcc_add_support(s1, "bt-exe.o");
1906 if (s1->output_type == TCC_OUTPUT_DLL)
1907 tcc_add_support(s1, "bt-dll.o");
1908 if (s1->output_type != TCC_OUTPUT_DLL)
1909 tcc_add_support(s1, "bt-log.o");
1910 if (s1->output_type != TCC_OUTPUT_MEMORY)
1911 tcc_add_btstub(s1);
1912 }
1913 #endif
1914
1915 /* grab the startup code from libtcc1.a */
1916 #ifdef TCC_IS_NATIVE
1917 if (TCC_OUTPUT_MEMORY != s1->output_type || s1->runtime_main)
1918 #endif
1919 set_global_sym(s1, start_symbol, NULL, 0);
1920
1921 if (0 == s1->nostdlib) {
1922 static const char * const libs[] = {
1923 "msvcrt", "kernel32", "", "user32", "gdi32", NULL
1924 };
1925 const char * const *pp, *p;
1926 if (TCC_LIBTCC1[0])
1927 tcc_add_support(s1, TCC_LIBTCC1);
1928 for (pp = libs; 0 != (p = *pp); ++pp) {
1929 if (*p)
1930 tcc_add_library_err(s1, p);
1931 else if (PE_DLL != pe_type && PE_GUI != pe_type)
1932 break;
1933 }
1934 }
1935
1936 /* need this for 'tccelf.c:relocate_sections()' */
1937 if (TCC_OUTPUT_DLL == s1->output_type)
1938 s1->output_type = TCC_OUTPUT_EXE;
1939 if (TCC_OUTPUT_MEMORY == s1->output_type)
1940 pe_type = PE_RUN;
1941 pe->type = pe_type;
1942 }
1943
1944 static void pe_set_options(TCCState * s1, struct pe_info *pe)
1945 {
1946 if (PE_DLL == pe->type) {
1947 /* XXX: check if is correct for arm-pe target */
1948 pe->imagebase = 0x10000000;
1949 } else {
1950 #if defined(TCC_TARGET_ARM)
1951 pe->imagebase = 0x00010000;
1952 #else
1953 pe->imagebase = 0x00400000;
1954 #endif
1955 }
1956
1957 #if defined(TCC_TARGET_ARM)
1958 /* we use "console" subsystem by default */
1959 pe->subsystem = 9;
1960 #else
1961 if (PE_DLL == pe->type || PE_GUI == pe->type)
1962 pe->subsystem = 2;
1963 else
1964 pe->subsystem = 3;
1965 #endif
1966 /* Allow override via -Wl,-subsystem=... option */
1967 if (s1->pe_subsystem != 0)
1968 pe->subsystem = s1->pe_subsystem;
1969
1970 /* set default file/section alignment */
1971 if (pe->subsystem == 1) {
1972 pe->section_align = 0x20;
1973 pe->file_align = 0x20;
1974 } else {
1975 pe->section_align = 0x1000;
1976 pe->file_align = 0x200;
1977 }
1978
1979 if (s1->section_align != 0)
1980 pe->section_align = s1->section_align;
1981 if (s1->pe_file_align != 0)
1982 pe->file_align = s1->pe_file_align;
1983
1984 if ((pe->subsystem >= 10) && (pe->subsystem <= 12))
1985 pe->imagebase = 0;
1986
1987 if (s1->has_text_addr)
1988 pe->imagebase = s1->text_addr;
1989 }
1990
1991 ST_FUNC int pe_output_file(TCCState *s1, const char *filename)
1992 {
1993 int ret;
1994 struct pe_info pe;
1995
1996 memset(&pe, 0, sizeof pe);
1997 pe.filename = filename;
1998 pe.s1 = s1;
1999 s1->filetype = 0;
2000
2001 #ifdef CONFIG_TCC_BCHECK
2002 tcc_add_bcheck(s1);
2003 #endif
2004 tcc_add_pragma_libs(s1);
2005 pe_add_runtime(s1, &pe);
2006 resolve_common_syms(s1);
2007 pe_set_options(s1, &pe);
2008
2009 ret = pe_check_symbols(&pe);
2010 if (ret)
2011 ;
2012 else if (filename) {
2013 pe_assign_addresses(&pe);
2014 relocate_syms(s1, s1->symtab, 0);
2015 s1->pe_imagebase = pe.imagebase;
2016 relocate_sections(s1);
2017 pe.start_addr = (DWORD)
2018 (get_sym_addr(s1, pe.start_symbol, 1, 1) - pe.imagebase);
2019 if (s1->nb_errors)
2020 ret = -1;
2021 else
2022 ret = pe_write(&pe);
2023 dynarray_reset(&pe.sec_info, &pe.sec_count);
2024 } else {
2025 #ifdef TCC_IS_NATIVE
2026 pe.thunk = data_section;
2027 pe_build_imports(&pe);
2028 s1->runtime_main = pe.start_symbol;
2029 #ifdef TCC_TARGET_X86_64
2030 s1->uw_pdata = find_section(s1, ".pdata");
2031 #endif
2032 #endif
2033 }
2034
2035 pe_free_imports(&pe);
2036
2037 #if PE_PRINT_SECTIONS
2038 if (s1->g_debug & 8)
2039 pe_print_sections(s1, "tcc.log");
2040 #endif
2041 return ret;
2042 }
2043
2044 /* ------------------------------------------------------------- */
2045
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