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tcc: add "-Wl,-rpath=path" option (library search path)
[tinycc/kirr.git] / tccpe.c
blob41de3f60b2011fe8ca0d68382978c86faf227c31
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 #ifdef TCC_TARGET_PE
22
23 #define ST_FN static
24 #define ST_DATA static
25 #define PUB_FN
26
27 #ifndef _WIN32
28 #define stricmp strcasecmp
29 #define strnicmp strncasecmp
30 #endif
31
32 #ifndef MAX_PATH
33 #define MAX_PATH 260
34 #endif
35
36 #define PE_MERGE_DATA
37 // #define PE_PRINT_SECTIONS
38
39 #ifdef TCC_TARGET_X86_64
40 # define ADDR3264 ULONGLONG
41 #else
42 # define ADDR3264 DWORD
43 #endif
44
45 #if defined _WIN32 && (defined _WIN64) == (defined TCC_TARGET_X86_64)
46 #define TCC_IS_NATIVE
47 #endif
48
49 #ifdef _WIN32
50 void dbg_printf (const char *fmt, ...)
51 {
52 char buffer[4000];
53 va_list arg;
54 int x;
55 va_start(arg, fmt);
56 x = vsprintf (buffer, fmt, arg);
57 strcpy(buffer+x, "\n");
58 OutputDebugString(buffer);
59 }
60 #endif
61
62 /* ----------------------------------------------------------- */
63 #ifndef IMAGE_NT_SIGNATURE
64 /* ----------------------------------------------------------- */
65 /* definitions below are from winnt.h */
66
67 typedef unsigned char BYTE;
68 typedef unsigned short WORD;
69 typedef unsigned long DWORD;
70 typedef unsigned long long ULONGLONG;
71 #pragma pack(push, 1)
72
73 typedef struct _IMAGE_DOS_HEADER { /* DOS .EXE header */
74 WORD e_magic; /* Magic number */
75 WORD e_cblp; /* Bytes on last page of file */
76 WORD e_cp; /* Pages in file */
77 WORD e_crlc; /* Relocations */
78 WORD e_cparhdr; /* Size of header in paragraphs */
79 WORD e_minalloc; /* Minimum extra paragraphs needed */
80 WORD e_maxalloc; /* Maximum extra paragraphs needed */
81 WORD e_ss; /* Initial (relative) SS value */
82 WORD e_sp; /* Initial SP value */
83 WORD e_csum; /* Checksum */
84 WORD e_ip; /* Initial IP value */
85 WORD e_cs; /* Initial (relative) CS value */
86 WORD e_lfarlc; /* File address of relocation table */
87 WORD e_ovno; /* Overlay number */
88 WORD e_res[4]; /* Reserved words */
89 WORD e_oemid; /* OEM identifier (for e_oeminfo) */
90 WORD e_oeminfo; /* OEM information; e_oemid specific */
91 WORD e_res2[10]; /* Reserved words */
92 DWORD e_lfanew; /* File address of new exe header */
93 } IMAGE_DOS_HEADER, *PIMAGE_DOS_HEADER;
94
95 #define IMAGE_NT_SIGNATURE 0x00004550 /* PE00 */
96 #define SIZE_OF_NT_SIGNATURE 4
97
98 typedef struct _IMAGE_FILE_HEADER {
99 WORD Machine;
100 WORD NumberOfSections;
101 DWORD TimeDateStamp;
102 DWORD PointerToSymbolTable;
103 DWORD NumberOfSymbols;
104 WORD SizeOfOptionalHeader;
105 WORD Characteristics;
106 } IMAGE_FILE_HEADER, *PIMAGE_FILE_HEADER;
107
108
109 #define IMAGE_SIZEOF_FILE_HEADER 20
110
111 typedef struct _IMAGE_DATA_DIRECTORY {
112 DWORD VirtualAddress;
113 DWORD Size;
114 } IMAGE_DATA_DIRECTORY, *PIMAGE_DATA_DIRECTORY;
115
116
117 typedef struct _IMAGE_OPTIONAL_HEADER {
118 /* Standard fields. */
119 WORD Magic;
120 BYTE MajorLinkerVersion;
121 BYTE MinorLinkerVersion;
122 DWORD SizeOfCode;
123 DWORD SizeOfInitializedData;
124 DWORD SizeOfUninitializedData;
125 DWORD AddressOfEntryPoint;
126 DWORD BaseOfCode;
127 #ifndef TCC_TARGET_X86_64
128 DWORD BaseOfData;
129 #endif
130 /* NT additional fields. */
131 ADDR3264 ImageBase;
132 DWORD SectionAlignment;
133 DWORD FileAlignment;
134 WORD MajorOperatingSystemVersion;
135 WORD MinorOperatingSystemVersion;
136 WORD MajorImageVersion;
137 WORD MinorImageVersion;
138 WORD MajorSubsystemVersion;
139 WORD MinorSubsystemVersion;
140 DWORD Win32VersionValue;
141 DWORD SizeOfImage;
142 DWORD SizeOfHeaders;
143 DWORD CheckSum;
144 WORD Subsystem;
145 WORD DllCharacteristics;
146 ADDR3264 SizeOfStackReserve;
147 ADDR3264 SizeOfStackCommit;
148 ADDR3264 SizeOfHeapReserve;
149 ADDR3264 SizeOfHeapCommit;
150 DWORD LoaderFlags;
151 DWORD NumberOfRvaAndSizes;
152 IMAGE_DATA_DIRECTORY DataDirectory[16];
153 } IMAGE_OPTIONAL_HEADER32, IMAGE_OPTIONAL_HEADER64, IMAGE_OPTIONAL_HEADER;
154
155 #define IMAGE_DIRECTORY_ENTRY_EXPORT 0 /* Export Directory */
156 #define IMAGE_DIRECTORY_ENTRY_IMPORT 1 /* Import Directory */
157 #define IMAGE_DIRECTORY_ENTRY_RESOURCE 2 /* Resource Directory */
158 #define IMAGE_DIRECTORY_ENTRY_EXCEPTION 3 /* Exception Directory */
159 #define IMAGE_DIRECTORY_ENTRY_SECURITY 4 /* Security Directory */
160 #define IMAGE_DIRECTORY_ENTRY_BASERELOC 5 /* Base Relocation Table */
161 #define IMAGE_DIRECTORY_ENTRY_DEBUG 6 /* Debug Directory */
162 /* IMAGE_DIRECTORY_ENTRY_COPYRIGHT 7 (X86 usage) */
163 #define IMAGE_DIRECTORY_ENTRY_ARCHITECTURE 7 /* Architecture Specific Data */
164 #define IMAGE_DIRECTORY_ENTRY_GLOBALPTR 8 /* RVA of GP */
165 #define IMAGE_DIRECTORY_ENTRY_TLS 9 /* TLS Directory */
166 #define IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG 10 /* Load Configuration Directory */
167 #define IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT 11 /* Bound Import Directory in headers */
168 #define IMAGE_DIRECTORY_ENTRY_IAT 12 /* Import Address Table */
169 #define IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT 13 /* Delay Load Import Descriptors */
170 #define IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR 14 /* COM Runtime descriptor */
171
172 /* Section header format. */
173 #define IMAGE_SIZEOF_SHORT_NAME 8
174
175 typedef struct _IMAGE_SECTION_HEADER {
176 BYTE Name[IMAGE_SIZEOF_SHORT_NAME];
177 union {
178 DWORD PhysicalAddress;
179 DWORD VirtualSize;
180 } Misc;
181 DWORD VirtualAddress;
182 DWORD SizeOfRawData;
183 DWORD PointerToRawData;
184 DWORD PointerToRelocations;
185 DWORD PointerToLinenumbers;
186 WORD NumberOfRelocations;
187 WORD NumberOfLinenumbers;
188 DWORD Characteristics;
189 } IMAGE_SECTION_HEADER, *PIMAGE_SECTION_HEADER;
190
191 #define IMAGE_SIZEOF_SECTION_HEADER 40
192
193 typedef struct _IMAGE_EXPORT_DIRECTORY {
194 DWORD Characteristics;
195 DWORD TimeDateStamp;
196 WORD MajorVersion;
197 WORD MinorVersion;
198 DWORD Name;
199 DWORD Base;
200 DWORD NumberOfFunctions;
201 DWORD NumberOfNames;
202 DWORD AddressOfFunctions;
203 DWORD AddressOfNames;
204 DWORD AddressOfNameOrdinals;
205 } IMAGE_EXPORT_DIRECTORY,*PIMAGE_EXPORT_DIRECTORY;
206
207 typedef struct _IMAGE_IMPORT_DESCRIPTOR {
208 union {
209 DWORD Characteristics;
210 DWORD OriginalFirstThunk;
211 };
212 DWORD TimeDateStamp;
213 DWORD ForwarderChain;
214 DWORD Name;
215 DWORD FirstThunk;
216 } IMAGE_IMPORT_DESCRIPTOR;
217
218 typedef struct _IMAGE_BASE_RELOCATION {
219 DWORD VirtualAddress;
220 DWORD SizeOfBlock;
221 // WORD TypeOffset[1];
222 } IMAGE_BASE_RELOCATION;
223
224 #define IMAGE_SIZEOF_BASE_RELOCATION 8
225
226 #define IMAGE_REL_BASED_ABSOLUTE 0
227 #define IMAGE_REL_BASED_HIGH 1
228 #define IMAGE_REL_BASED_LOW 2
229 #define IMAGE_REL_BASED_HIGHLOW 3
230 #define IMAGE_REL_BASED_HIGHADJ 4
231 #define IMAGE_REL_BASED_MIPS_JMPADDR 5
232 #define IMAGE_REL_BASED_SECTION 6
233 #define IMAGE_REL_BASED_REL32 7
234
235 #pragma pack(pop)
236
237 /* ----------------------------------------------------------- */
238 #endif /* ndef IMAGE_NT_SIGNATURE */
239 /* ----------------------------------------------------------- */
240 #pragma pack(push, 1)
241
242 struct pe_header
243 {
244 IMAGE_DOS_HEADER doshdr;
245 BYTE dosstub[0x40];
246 DWORD nt_sig;
247 IMAGE_FILE_HEADER filehdr;
248 #ifdef TCC_TARGET_X86_64
249 IMAGE_OPTIONAL_HEADER64 opthdr;
250 #else
251 #ifdef _WIN64
252 IMAGE_OPTIONAL_HEADER32 opthdr;
253 #else
254 IMAGE_OPTIONAL_HEADER opthdr;
255 #endif
256 #endif
257 };
258
259 struct pe_reloc_header {
260 DWORD offset;
261 DWORD size;
262 };
263
264 struct pe_rsrc_header {
265 struct _IMAGE_FILE_HEADER filehdr;
266 struct _IMAGE_SECTION_HEADER sectionhdr;
267 };
268
269 struct pe_rsrc_reloc {
270 DWORD offset;
271 DWORD size;
272 WORD type;
273 };
274
275 #pragma pack(pop)
276
277 /* ------------------------------------------------------------- */
278 /* internal temporary structures */
279
280 /*
281 #define IMAGE_SCN_CNT_CODE 0x00000020
282 #define IMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040
283 #define IMAGE_SCN_CNT_UNINITIALIZED_DATA 0x00000080
284 #define IMAGE_SCN_MEM_DISCARDABLE 0x02000000
285 #define IMAGE_SCN_MEM_SHARED 0x10000000
286 #define IMAGE_SCN_MEM_EXECUTE 0x20000000
287 #define IMAGE_SCN_MEM_READ 0x40000000
288 #define IMAGE_SCN_MEM_WRITE 0x80000000
289 */
290
291 enum {
292 sec_text = 0,
293 sec_data ,
294 sec_bss ,
295 sec_idata ,
296 sec_other ,
297 sec_rsrc ,
298 sec_stab ,
299 sec_reloc ,
300 sec_last
301 };
302
303 ST_DATA const DWORD pe_sec_flags[] = {
304 0x60000020, /* ".text" , */
305 0xC0000040, /* ".data" , */
306 0xC0000080, /* ".bss" , */
307 0x40000040, /* ".idata" , */
308 0xE0000060, /* < other > , */
309 0x40000040, /* ".rsrc" , */
310 0x42000802, /* ".stab" , */
311 0x42000040, /* ".reloc" , */
312 };
313
314 struct section_info {
315 int cls, ord;
316 char name[32];
317 DWORD sh_addr;
318 DWORD sh_size;
319 DWORD sh_flags;
320 unsigned char *data;
321 DWORD data_size;
322 IMAGE_SECTION_HEADER ish;
323 };
324
325 struct import_symbol {
326 int sym_index;
327 int iat_index;
328 int thk_offset;
329 };
330
331 struct pe_import_info {
332 int dll_index;
333 int sym_count;
334 struct import_symbol **symbols;
335 };
336
337 struct pe_info {
338 TCCState *s1;
339 Section *reloc;
340 Section *thunk;
341 const char *filename;
342 int type;
343 DWORD sizeofheaders;
344 DWORD imagebase;
345 DWORD start_addr;
346 DWORD imp_offs;
347 DWORD imp_size;
348 DWORD iat_offs;
349 DWORD iat_size;
350 DWORD exp_offs;
351 DWORD exp_size;
352 int subsystem;
353 DWORD section_align;
354 DWORD file_align;
355 struct section_info *sec_info;
356 int sec_count;
357 struct pe_import_info **imp_info;
358 int imp_count;
359 };
360
361 #define PE_NUL 0
362 #define PE_DLL 1
363 #define PE_GUI 2
364 #define PE_EXE 3
365 #define PE_RUN 4
366
367 /* --------------------------------------------*/
368
369 ST_FN const char* get_alt_symbol(char *buffer, const char *symbol)
370 {
371 const char *p;
372 p = strrchr(symbol, '@');
373 if (p && isnum(p[1]) && symbol[0] == '_') { /* stdcall decor */
374 strcpy(buffer, symbol+1)[p-symbol-1] = 0;
375 } else if (symbol[0] != '_') { /* try non-ansi function */
376 buffer[0] = '_', strcpy(buffer + 1, symbol);
377 } else if (0 == memcmp(symbol, "__imp__", 7)) { /* mingw 2.0 */
378 strcpy(buffer, symbol + 6);
379 } else if (0 == memcmp(symbol, "_imp___", 7)) { /* mingw 3.7 */
380 strcpy(buffer, symbol + 6);
381 } else {
382 return symbol;
383 }
384 return buffer;
385 }
386
387 ST_FN int pe_find_import(TCCState * s1, const char *symbol)
388 {
389 char buffer[200];
390 const char *s;
391 int sym_index, n = 0;
392 do {
393 s = n ? get_alt_symbol(buffer, symbol) : symbol;
394 sym_index = find_elf_sym(s1->dynsymtab_section, s);
395 // printf("find (%d) %d %s\n", n, sym_index, s);
396 } while (0 == sym_index && ++n < 2);
397 return sym_index;
398 }
399
400 /*----------------------------------------------------------------------------*/
401
402 ST_FN int dynarray_assoc(void **pp, int n, int key)
403 {
404 int i;
405 for (i = 0; i < n; ++i, ++pp)
406 if (key == **(int **) pp)
407 return i;
408 return -1;
409 }
410
411 #if 0
412 ST_FN DWORD umin(DWORD a, DWORD b)
413 {
414 return a < b ? a : b;
415 }
416 #endif
417
418 ST_FN DWORD umax(DWORD a, DWORD b)
419 {
420 return a < b ? b : a;
421 }
422
423 ST_FN DWORD pe_file_align(struct pe_info *pe, DWORD n)
424 {
425 return (n + (pe->file_align - 1)) & ~(pe->file_align - 1);
426 }
427
428 ST_FN DWORD pe_virtual_align(struct pe_info *pe, DWORD n)
429 {
430 return (n + (pe->section_align - 1)) & ~(pe->section_align - 1);
431 }
432
433 ST_FN void pe_align_section(Section *s, int a)
434 {
435 int i = s->data_offset & (a-1);
436 if (i)
437 section_ptr_add(s, a - i);
438 }
439
440 ST_FN void pe_set_datadir(struct pe_header *hdr, int dir, DWORD addr, DWORD size)
441 {
442 hdr->opthdr.DataDirectory[dir].VirtualAddress = addr;
443 hdr->opthdr.DataDirectory[dir].Size = size;
444 }
445
446 ST_FN int pe_fwrite(void *data, unsigned len, FILE *fp, DWORD *psum)
447 {
448 if (psum) {
449 DWORD sum = *psum;
450 WORD *p = data;
451 int i;
452 for (i = len; i > 0; i -= 2) {
453 sum += (i >= 2) ? *p++ : *(BYTE*)p;
454 sum = (sum + (sum >> 16)) & 0xFFFF;
455 }
456 *psum = sum;
457 }
458 return len == fwrite(data, 1, len, fp) ? 0 : -1;
459 }
460
461 ST_FN void pe_fpad(FILE *fp, DWORD new_pos)
462 {
463 DWORD pos = ftell(fp);
464 while (++pos <= new_pos)
465 fputc(0, fp);
466 }
467
468 /*----------------------------------------------------------------------------*/
469 ST_FN int pe_write(struct pe_info *pe)
470 {
471 static const struct pe_header pe_template = {
472 {
473 /* IMAGE_DOS_HEADER doshdr */
474 0x5A4D, /*WORD e_magic; Magic number */
475 0x0090, /*WORD e_cblp; Bytes on last page of file */
476 0x0003, /*WORD e_cp; Pages in file */
477 0x0000, /*WORD e_crlc; Relocations */
478
479 0x0004, /*WORD e_cparhdr; Size of header in paragraphs */
480 0x0000, /*WORD e_minalloc; Minimum extra paragraphs needed */
481 0xFFFF, /*WORD e_maxalloc; Maximum extra paragraphs needed */
482 0x0000, /*WORD e_ss; Initial (relative) SS value */
483
484 0x00B8, /*WORD e_sp; Initial SP value */
485 0x0000, /*WORD e_csum; Checksum */
486 0x0000, /*WORD e_ip; Initial IP value */
487 0x0000, /*WORD e_cs; Initial (relative) CS value */
488 0x0040, /*WORD e_lfarlc; File address of relocation table */
489 0x0000, /*WORD e_ovno; Overlay number */
490 {0,0,0,0}, /*WORD e_res[4]; Reserved words */
491 0x0000, /*WORD e_oemid; OEM identifier (for e_oeminfo) */
492 0x0000, /*WORD e_oeminfo; OEM information; e_oemid specific */
493 {0,0,0,0,0,0,0,0,0,0}, /*WORD e_res2[10]; Reserved words */
494 0x00000080 /*DWORD e_lfanew; File address of new exe header */
495 },{
496 /* BYTE dosstub[0x40] */
497 /* 14 code bytes + "This program cannot be run in DOS mode.\r\r\n$" + 6 * 0x00 */
498 0x0e,0x1f,0xba,0x0e,0x00,0xb4,0x09,0xcd,0x21,0xb8,0x01,0x4c,0xcd,0x21,0x54,0x68,
499 0x69,0x73,0x20,0x70,0x72,0x6f,0x67,0x72,0x61,0x6d,0x20,0x63,0x61,0x6e,0x6e,0x6f,
500 0x74,0x20,0x62,0x65,0x20,0x72,0x75,0x6e,0x20,0x69,0x6e,0x20,0x44,0x4f,0x53,0x20,
501 0x6d,0x6f,0x64,0x65,0x2e,0x0d,0x0d,0x0a,0x24,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
502 },
503 0x00004550, /* DWORD nt_sig = IMAGE_NT_SIGNATURE */
504 {
505 /* IMAGE_FILE_HEADER filehdr */
506 #if defined(TCC_TARGET_I386)
507 0x014C, /*WORD Machine; */
508 #elif defined(TCC_TARGET_X86_64)
509 0x8664, /*WORD Machine; */
510 #elif defined(TCC_TARGET_ARM)
511 0x01C0, /*WORD Machine; */
512 #endif
513 0x0003, /*WORD NumberOfSections; */
514 0x00000000, /*DWORD TimeDateStamp; */
515 0x00000000, /*DWORD PointerToSymbolTable; */
516 0x00000000, /*DWORD NumberOfSymbols; */
517 #if defined(TCC_TARGET_X86_64)
518 0x00F0, /*WORD SizeOfOptionalHeader; */
519 0x022F /*WORD Characteristics; */
520 #define CHARACTERISTICS_DLL 0x222E
521 #elif defined(TCC_TARGET_I386)
522 0x00E0, /*WORD SizeOfOptionalHeader; */
523 0x030F /*WORD Characteristics; */
524 #define CHARACTERISTICS_DLL 0x230E
525 #elif defined(TCC_TARGET_ARM)
526 0x00E0, /*WORD SizeOfOptionalHeader; */
527 0x010F, /*WORD Characteristics; */
528 #define CHARACTERISTICS_DLL 0x230F
529 #endif
530 },{
531 /* IMAGE_OPTIONAL_HEADER opthdr */
532 /* Standard fields. */
533 #ifdef TCC_TARGET_X86_64
534 0x020B, /*WORD Magic; */
535 #else
536 0x010B, /*WORD Magic; */
537 #endif
538 0x06, /*BYTE MajorLinkerVersion; */
539 0x00, /*BYTE MinorLinkerVersion; */
540 0x00000000, /*DWORD SizeOfCode; */
541 0x00000000, /*DWORD SizeOfInitializedData; */
542 0x00000000, /*DWORD SizeOfUninitializedData; */
543 0x00000000, /*DWORD AddressOfEntryPoint; */
544 0x00000000, /*DWORD BaseOfCode; */
545 #ifndef TCC_TARGET_X86_64
546 0x00000000, /*DWORD BaseOfData; */
547 #endif
548 /* NT additional fields. */
549 #if defined(TCC_TARGET_ARM)
550 0x00100000, /*DWORD ImageBase; */
551 #else
552 0x00400000, /*DWORD ImageBase; */
553 #endif
554 0x00001000, /*DWORD SectionAlignment; */
555 0x00000200, /*DWORD FileAlignment; */
556 0x0004, /*WORD MajorOperatingSystemVersion; */
557 0x0000, /*WORD MinorOperatingSystemVersion; */
558 0x0000, /*WORD MajorImageVersion; */
559 0x0000, /*WORD MinorImageVersion; */
560 0x0004, /*WORD MajorSubsystemVersion; */
561 0x0000, /*WORD MinorSubsystemVersion; */
562 0x00000000, /*DWORD Win32VersionValue; */
563 0x00000000, /*DWORD SizeOfImage; */
564 0x00000200, /*DWORD SizeOfHeaders; */
565 0x00000000, /*DWORD CheckSum; */
566 0x0002, /*WORD Subsystem; */
567 0x0000, /*WORD DllCharacteristics; */
568 0x00100000, /*DWORD SizeOfStackReserve; */
569 0x00001000, /*DWORD SizeOfStackCommit; */
570 0x00100000, /*DWORD SizeOfHeapReserve; */
571 0x00001000, /*DWORD SizeOfHeapCommit; */
572 0x00000000, /*DWORD LoaderFlags; */
573 0x00000010, /*DWORD NumberOfRvaAndSizes; */
574
575 /* IMAGE_DATA_DIRECTORY DataDirectory[16]; */
576 {{0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0},
577 {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}}
578 }};
579
580 struct pe_header pe_header = pe_template;
581
582 int i;
583 FILE *op;
584 DWORD file_offset, sum;
585 struct section_info *si;
586 IMAGE_SECTION_HEADER *psh;
587
588 op = fopen(pe->filename, "wb");
589 if (NULL == op) {
590 error_noabort("could not write '%s': %s", pe->filename, strerror(errno));
591 return -1;
592 }
593
594 pe->sizeofheaders = pe_file_align(pe,
595 sizeof (struct pe_header)
596 + pe->sec_count * sizeof (IMAGE_SECTION_HEADER)
597 );
598
599 file_offset = pe->sizeofheaders;
600
601 if (2 == pe->s1->verbose)
602 printf("-------------------------------"
603 "\n virt file size section" "\n");
604 for (i = 0; i < pe->sec_count; ++i) {
605 unsigned long addr, size;
606 const char *sh_name;
607
608 si = pe->sec_info + i;
609 sh_name = si->name;
610 addr = si->sh_addr - pe->imagebase;
611 size = si->sh_size;
612 psh = &si->ish;
613
614 if (2 == pe->s1->verbose)
615 printf("%6lx %6lx %6lx %s\n",
616 addr, file_offset, size, sh_name);
617
618 switch (si->cls) {
619 case sec_text:
620 pe_header.opthdr.BaseOfCode = addr;
621 pe_header.opthdr.AddressOfEntryPoint = addr + pe->start_addr;
622 break;
623
624 case sec_data:
625 #ifndef TCC_TARGET_X86_64
626 pe_header.opthdr.BaseOfData = addr;
627 #endif
628 break;
629
630 case sec_bss:
631 break;
632
633 case sec_reloc:
634 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_BASERELOC, addr, size);
635 break;
636
637 case sec_rsrc:
638 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_RESOURCE, addr, size);
639 break;
640
641 case sec_stab:
642 break;
643 }
644
645 if (pe->thunk == pe->s1->sections[si->ord]) {
646 if (pe->imp_size) {
647 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_IMPORT,
648 pe->imp_offs + addr, pe->imp_size);
649 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_IAT,
650 pe->iat_offs + addr, pe->iat_size);
651 }
652 if (pe->exp_size) {
653 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_EXPORT,
654 pe->exp_offs + addr, pe->exp_size);
655 }
656 }
657
658 strcpy((char*)psh->Name, sh_name);
659
660 psh->Characteristics = pe_sec_flags[si->cls];
661 psh->VirtualAddress = addr;
662 psh->Misc.VirtualSize = size;
663 pe_header.opthdr.SizeOfImage =
664 umax(pe_virtual_align(pe, size + addr), pe_header.opthdr.SizeOfImage);
665
666 if (si->data_size) {
667 psh->PointerToRawData = file_offset;
668 file_offset = pe_file_align(pe, file_offset + si->data_size);
669 psh->SizeOfRawData = file_offset - psh->PointerToRawData;
670 }
671 }
672
673 //pe_header.filehdr.TimeDateStamp = time(NULL);
674 pe_header.filehdr.NumberOfSections = pe->sec_count;
675 pe_header.opthdr.SizeOfHeaders = pe->sizeofheaders;
676 pe_header.opthdr.ImageBase = pe->imagebase;
677 if (PE_DLL == pe->type)
678 pe_header.filehdr.Characteristics = CHARACTERISTICS_DLL;
679 else if (PE_GUI != pe->type)
680 pe_header.opthdr.Subsystem = 3;
681
682 sum = 0;
683 pe_fwrite(&pe_header, sizeof pe_header, op, &sum);
684 for (i = 0; i < pe->sec_count; ++i)
685 pe_fwrite(&pe->sec_info[i].ish, sizeof(IMAGE_SECTION_HEADER), op, &sum);
686 pe_fpad(op, pe->sizeofheaders);
687 for (i = 0; i < pe->sec_count; ++i) {
688 si = pe->sec_info + i;
689 psh = &si->ish;
690 if (si->data_size) {
691 pe_fwrite(si->data, si->data_size, op, &sum);
692 file_offset = psh->PointerToRawData + psh->SizeOfRawData;
693 pe_fpad(op, file_offset);
694 }
695 }
696
697 pe_header.opthdr.CheckSum = sum + file_offset;
698 fseek(op, offsetof(struct pe_header, opthdr.CheckSum), SEEK_SET);
699 pe_fwrite(&pe_header.opthdr.CheckSum, sizeof pe_header.opthdr.CheckSum, op, NULL);
700 fclose (op);
701
702 if (2 == pe->s1->verbose)
703 printf("-------------------------------\n");
704 if (pe->s1->verbose)
705 printf("<- %s (%lu bytes)\n", pe->filename, file_offset);
706
707 return 0;
708 }
709
710 /*----------------------------------------------------------------------------*/
711
712 #if defined(TCC_TARGET_X86_64)
713 #define ELFW_R_(type) ELF64_R_##type
714 #define ElfW_Rel ElfW(Rela)
715
716 #define REL_TYPE_DIRECT R_X86_64_64
717 #define R_XXX_THUNKFIX R_X86_64_PC32
718 #define R_XXX_RELATIVE R_X86_64_RELATIVE
719
720 #define ELFW_ST_BIND ELF64_ST_BIND
721 #define ELFW_ST_TYPE ELF64_ST_TYPE
722 #define ELFW_ST_INFO ELF64_ST_INFO
723 #elif defined(TCC_TARGET_I386)
724 #define ELFW_R_(type) ELF32_R_##type
725 #define ElfW_Rel ElfW(Rel)
726
727 #define REL_TYPE_DIRECT R_386_32
728 #define R_XXX_THUNKFIX R_386_32
729 #define R_XXX_RELATIVE R_386_RELATIVE
730
731 #define ELFW_ST_BIND ELF32_ST_BIND
732 #define ELFW_ST_TYPE ELF32_ST_TYPE
733 #define ELFW_ST_INFO ELF32_ST_INFO
734 #elif defined(TCC_TARGET_ARM)
735 #define ELFW_R_(type) ELF32_R_##type
736 #define ElfW_Rel ElfW(Rel)
737
738 #define REL_TYPE_DIRECT R_ARM_ABS32
739 #define R_XXX_THUNKFIX R_ARM_ABS32
740 #define R_XXX_RELATIVE R_ARM_RELATIVE
741
742 #define ELFW_ST_BIND ELF32_ST_BIND
743 #define ELFW_ST_TYPE ELF32_ST_TYPE
744 #define ELFW_ST_INFO ELF32_ST_INFO
745 #endif
746 /*----------------------------------------------------------------------------*/
747
748 ST_FN struct import_symbol *pe_add_import(struct pe_info *pe, int sym_index)
749 {
750 int i;
751 int dll_index;
752 struct pe_import_info *p;
753 struct import_symbol *s;
754
755 dll_index = ((ElfW(Sym) *)pe->s1->dynsymtab_section->data + sym_index)->st_value;
756 if (0 == dll_index)
757 return NULL;
758
759 i = dynarray_assoc ((void**)pe->imp_info, pe->imp_count, dll_index);
760 if (-1 != i) {
761 p = pe->imp_info[i];
762 goto found_dll;
763 }
764 p = tcc_mallocz(sizeof *p);
765 p->dll_index = dll_index;
766 dynarray_add((void***)&pe->imp_info, &pe->imp_count, p);
767
768 found_dll:
769 i = dynarray_assoc ((void**)p->symbols, p->sym_count, sym_index);
770 if (-1 != i)
771 return p->symbols[i];
772
773 s = tcc_mallocz(sizeof *s);
774 dynarray_add((void***)&p->symbols, &p->sym_count, s);
775 s->sym_index = sym_index;
776 return s;
777 }
778
779 /*----------------------------------------------------------------------------*/
780 ST_FN void pe_build_imports(struct pe_info *pe)
781 {
782 int thk_ptr, ent_ptr, dll_ptr, sym_cnt, i;
783 DWORD rva_base = pe->thunk->sh_addr - pe->imagebase;
784 int ndlls = pe->imp_count;
785
786 for (sym_cnt = i = 0; i < ndlls; ++i)
787 sym_cnt += pe->imp_info[i]->sym_count;
788
789 if (0 == sym_cnt)
790 return;
791
792 pe_align_section(pe->thunk, 16);
793
794 pe->imp_offs = dll_ptr = pe->thunk->data_offset;
795 pe->imp_size = (ndlls + 1) * sizeof(IMAGE_IMPORT_DESCRIPTOR);
796 pe->iat_offs = dll_ptr + pe->imp_size;
797 pe->iat_size = (sym_cnt + ndlls) * sizeof(ADDR3264);
798 section_ptr_add(pe->thunk, pe->imp_size + 2*pe->iat_size);
799
800 thk_ptr = pe->iat_offs;
801 ent_ptr = pe->iat_offs + pe->iat_size;
802
803 for (i = 0; i < pe->imp_count; ++i) {
804 IMAGE_IMPORT_DESCRIPTOR *hdr;
805 int k, n;
806 ADDR3264 v;
807 struct pe_import_info *p = pe->imp_info[i];
808 const char *name = pe->s1->loaded_dlls[p->dll_index-1]->name;
809
810 /* put the dll name into the import header */
811 v = put_elf_str(pe->thunk, name);
812
813 hdr = (IMAGE_IMPORT_DESCRIPTOR*)(pe->thunk->data + dll_ptr);
814 hdr->FirstThunk = thk_ptr + rva_base;
815 hdr->OriginalFirstThunk = ent_ptr + rva_base;
816 hdr->Name = v + rva_base;
817
818 for (k = 0, n = p->sym_count; k <= n; ++k) {
819 if (k < n) {
820 int iat_index = p->symbols[k]->iat_index;
821 int sym_index = p->symbols[k]->sym_index;
822 ElfW(Sym) *imp_sym = (ElfW(Sym) *)pe->s1->dynsymtab_section->data + sym_index;
823 ElfW(Sym) *org_sym = (ElfW(Sym) *)symtab_section->data + iat_index;
824 const char *name = pe->s1->dynsymtab_section->link->data + imp_sym->st_name;
825
826 org_sym->st_value = thk_ptr;
827 org_sym->st_shndx = pe->thunk->sh_num;
828 v = pe->thunk->data_offset + rva_base;
829 section_ptr_add(pe->thunk, sizeof(WORD)); /* hint, not used */
830 put_elf_str(pe->thunk, name);
831 #ifdef TCC_IS_NATIVE
832 if (pe->type == PE_RUN) {
833 DLLReference *dllref = pe->s1->loaded_dlls[imp_sym->st_value-1];
834 if ( !dllref->handle )
835 dllref->handle = LoadLibrary(dllref->name);
836 v = (ADDR3264)GetProcAddress(dllref->handle, name);
837 if (!v)
838 error_noabort("undefined symbol '%s'", name);
839 }
840 #endif
841 } else {
842 v = 0; /* last entry is zero */
843 }
844 *(ADDR3264*)(pe->thunk->data+thk_ptr) =
845 *(ADDR3264*)(pe->thunk->data+ent_ptr) = v;
846 thk_ptr += sizeof (ADDR3264);
847 ent_ptr += sizeof (ADDR3264);
848 }
849 dll_ptr += sizeof(IMAGE_IMPORT_DESCRIPTOR);
850 dynarray_reset(&p->symbols, &p->sym_count);
851 }
852 dynarray_reset(&pe->imp_info, &pe->imp_count);
853 }
854
855 /* ------------------------------------------------------------- */
856 /*
857 For now only functions are exported. Export of data
858 would work, but import requires compiler support to
859 do an additional indirection.
860
861 For instance:
862 __declspec(dllimport) extern int something;
863
864 needs to be translated to:
865
866 *(int*)something
867 */
868
869 struct pe_sort_sym
870 {
871 int index;
872 const char *name;
873 };
874
875 ST_FN int sym_cmp(const void *va, const void *vb)
876 {
877 const char *ca = (*(struct pe_sort_sym**)va)->name;
878 const char *cb = (*(struct pe_sort_sym**)vb)->name;
879 return strcmp(ca, cb);
880 }
881
882 ST_FN void pe_build_exports(struct pe_info *pe)
883 {
884 ElfW(Sym) *sym;
885 int sym_index, sym_end;
886 DWORD rva_base, func_o, name_o, ord_o, str_o;
887 IMAGE_EXPORT_DIRECTORY *hdr;
888 int sym_count, ord;
889 struct pe_sort_sym **sorted, *p;
890
891 FILE *op;
892 char buf[MAX_PATH];
893 const char *dllname;
894 const char *name;
895
896 rva_base = pe->thunk->sh_addr - pe->imagebase;
897 sym_count = 0, sorted = NULL, op = NULL;
898
899 sym_end = symtab_section->data_offset / sizeof(ElfW(Sym));
900 for (sym_index = 1; sym_index < sym_end; ++sym_index) {
901 sym = (ElfW(Sym)*)symtab_section->data + sym_index;
902 name = symtab_section->link->data + sym->st_name;
903 if ((sym->st_other & 1)
904 /* export only symbols from actually written sections */
905 && pe->s1->sections[sym->st_shndx]->sh_addr) {
906 p = tcc_malloc(sizeof *p);
907 p->index = sym_index;
908 p->name = name;
909 dynarray_add((void***)&sorted, &sym_count, p);
910 }
911 #if 0
912 if (sym->st_other & 1)
913 printf("export: %s\n", name);
914 if (sym->st_other & 2)
915 printf("stdcall: %s\n", name);
916 #endif
917 }
918
919 if (0 == sym_count)
920 return;
921
922 qsort (sorted, sym_count, sizeof *sorted, sym_cmp);
923
924 pe_align_section(pe->thunk, 16);
925 dllname = tcc_basename(pe->filename);
926
927 pe->exp_offs = pe->thunk->data_offset;
928 func_o = pe->exp_offs + sizeof(IMAGE_EXPORT_DIRECTORY);
929 name_o = func_o + sym_count * sizeof (DWORD);
930 ord_o = name_o + sym_count * sizeof (DWORD);
931 str_o = ord_o + sym_count * sizeof(WORD);
932
933 hdr = section_ptr_add(pe->thunk, str_o - pe->exp_offs);
934 hdr->Characteristics = 0;
935 hdr->Base = 1;
936 hdr->NumberOfFunctions = sym_count;
937 hdr->NumberOfNames = sym_count;
938 hdr->AddressOfFunctions = func_o + rva_base;
939 hdr->AddressOfNames = name_o + rva_base;
940 hdr->AddressOfNameOrdinals = ord_o + rva_base;
941 hdr->Name = str_o + rva_base;
942 put_elf_str(pe->thunk, dllname);
943
944 #if 1
945 /* automatically write exports to <output-filename>.def */
946 strcpy(buf, pe->filename);
947 strcpy(tcc_fileextension(buf), ".def");
948 op = fopen(buf, "w");
949 if (NULL == op) {
950 error_noabort("could not create '%s': %s", buf, strerror(errno));
951 } else {
952 fprintf(op, "LIBRARY %s\n\nEXPORTS\n", dllname);
953 if (pe->s1->verbose)
954 printf("<- %s (%d symbols)\n", buf, sym_count);
955 }
956 #endif
957
958 for (ord = 0; ord < sym_count; ++ord)
959 {
960 p = sorted[ord], sym_index = p->index, name = p->name;
961 /* insert actual address later in pe_relocate_rva */
962 put_elf_reloc(symtab_section, pe->thunk,
963 func_o, R_XXX_RELATIVE, sym_index);
964 *(DWORD*)(pe->thunk->data + name_o)
965 = pe->thunk->data_offset + rva_base;
966 *(WORD*)(pe->thunk->data + ord_o)
967 = ord;
968 put_elf_str(pe->thunk, name);
969 func_o += sizeof (DWORD);
970 name_o += sizeof (DWORD);
971 ord_o += sizeof (WORD);
972 if (op)
973 fprintf(op, "%s\n", name);
974 }
975 pe->exp_size = pe->thunk->data_offset - pe->exp_offs;
976 dynarray_reset(&sorted, &sym_count);
977 if (op)
978 fclose(op);
979 }
980
981 /* ------------------------------------------------------------- */
982 ST_FN void pe_build_reloc (struct pe_info *pe)
983 {
984 DWORD offset, block_ptr, addr;
985 int count, i;
986 ElfW_Rel *rel, *rel_end;
987 Section *s = NULL, *sr;
988
989 offset = addr = block_ptr = count = i = 0;
990 rel = rel_end = NULL;
991
992 for(;;) {
993 if (rel < rel_end) {
994 int type = ELFW_R_(TYPE)(rel->r_info);
995 addr = rel->r_offset + s->sh_addr;
996 ++ rel;
997 if (type != REL_TYPE_DIRECT)
998 continue;
999 if (count == 0) { /* new block */
1000 block_ptr = pe->reloc->data_offset;
1001 section_ptr_add(pe->reloc, sizeof(struct pe_reloc_header));
1002 offset = addr & 0xFFFFFFFF<<12;
1003 }
1004 if ((addr -= offset) < (1<<12)) { /* one block spans 4k addresses */
1005 WORD *wp = section_ptr_add(pe->reloc, sizeof (WORD));
1006 *wp = addr | IMAGE_REL_BASED_HIGHLOW<<12;
1007 ++count;
1008 continue;
1009 }
1010 -- rel;
1011
1012 } else if (i < pe->sec_count) {
1013 sr = (s = pe->s1->sections[pe->sec_info[i++].ord])->reloc;
1014 if (sr) {
1015 rel = (ElfW_Rel *)sr->data;
1016 rel_end = (ElfW_Rel *)(sr->data + sr->data_offset);
1017 }
1018 continue;
1019 }
1020
1021 if (count) {
1022 /* store the last block and ready for a new one */
1023 struct pe_reloc_header *hdr;
1024 if (count & 1) /* align for DWORDS */
1025 section_ptr_add(pe->reloc, sizeof(WORD)), ++count;
1026 hdr = (struct pe_reloc_header *)(pe->reloc->data + block_ptr);
1027 hdr -> offset = offset - pe->imagebase;
1028 hdr -> size = count * sizeof(WORD) + sizeof(struct pe_reloc_header);
1029 count = 0;
1030 }
1031
1032 if (rel >= rel_end)
1033 break;
1034 }
1035 }
1036
1037 /* ------------------------------------------------------------- */
1038 ST_FN int pe_section_class(Section *s)
1039 {
1040 int type, flags;
1041 const char *name;
1042
1043 type = s->sh_type;
1044 flags = s->sh_flags;
1045 name = s->name;
1046 if (flags & SHF_ALLOC) {
1047 if (type == SHT_PROGBITS) {
1048 if (flags & SHF_EXECINSTR)
1049 return sec_text;
1050 if (flags & SHF_WRITE)
1051 return sec_data;
1052 if (0 == strcmp(name, ".rsrc"))
1053 return sec_rsrc;
1054 if (0 == strcmp(name, ".iedat"))
1055 return sec_idata;
1056 return sec_other;
1057 } else if (type == SHT_NOBITS) {
1058 if (flags & SHF_WRITE)
1059 return sec_bss;
1060 }
1061 } else {
1062 if (0 == strcmp(name, ".reloc"))
1063 return sec_reloc;
1064 if (0 == strncmp(name, ".stab", 5)) /* .stab and .stabstr */
1065 return sec_stab;
1066 }
1067 return -1;
1068 }
1069
1070 ST_FN int pe_assign_addresses (struct pe_info *pe)
1071 {
1072 int i, k, o, c;
1073 DWORD addr;
1074 int *section_order;
1075 struct section_info *si;
1076 Section *s;
1077
1078 // pe->thunk = new_section(pe->s1, ".iedat", SHT_PROGBITS, SHF_ALLOC);
1079
1080 section_order = tcc_malloc(pe->s1->nb_sections * sizeof (int));
1081 for (o = k = 0 ; k < sec_last; ++k) {
1082 for (i = 1; i < pe->s1->nb_sections; ++i) {
1083 s = pe->s1->sections[i];
1084 if (k == pe_section_class(s)) {
1085 // printf("%s %d\n", s->name, k);
1086 s->sh_addr = pe->imagebase;
1087 section_order[o++] = i;
1088 }
1089 }
1090 }
1091
1092 pe->sec_info = tcc_mallocz(o * sizeof (struct section_info));
1093 addr = pe->imagebase + 1;
1094
1095 for (i = 0; i < o; ++i)
1096 {
1097 k = section_order[i];
1098 s = pe->s1->sections[k];
1099 c = pe_section_class(s);
1100 si = &pe->sec_info[pe->sec_count];
1101
1102 #ifdef PE_MERGE_DATA
1103 if (c == sec_bss && pe->sec_count && si[-1].cls == sec_data) {
1104 /* append .bss to .data */
1105 s->sh_addr = addr = ((addr-1) | 15) + 1;
1106 addr += s->data_offset;
1107 si[-1].sh_size = addr - si[-1].sh_addr;
1108 continue;
1109 }
1110 #endif
1111 strcpy(si->name, s->name);
1112 si->cls = c;
1113 si->ord = k;
1114 si->sh_addr = s->sh_addr = addr = pe_virtual_align(pe, addr);
1115 si->sh_flags = s->sh_flags;
1116
1117 if (c == sec_data && NULL == pe->thunk)
1118 pe->thunk = s;
1119
1120 if (s == pe->thunk) {
1121 pe_build_imports(pe);
1122 pe_build_exports(pe);
1123 }
1124
1125 if (c == sec_reloc)
1126 pe_build_reloc (pe);
1127
1128 if (s->data_offset)
1129 {
1130 if (s->sh_type != SHT_NOBITS) {
1131 si->data = s->data;
1132 si->data_size = s->data_offset;
1133 }
1134
1135 addr += s->data_offset;
1136 si->sh_size = s->data_offset;
1137 ++pe->sec_count;
1138 }
1139 // printf("%08x %05x %s\n", si->sh_addr, si->sh_size, si->name);
1140 }
1141
1142 #if 0
1143 for (i = 1; i < pe->s1->nb_sections; ++i) {
1144 Section *s = pe->s1->sections[i];
1145 int type = s->sh_type;
1146 int flags = s->sh_flags;
1147 printf("section %-16s %-10s %5x %s,%s,%s\n",
1148 s->name,
1149 type == SHT_PROGBITS ? "progbits" :
1150 type == SHT_NOBITS ? "nobits" :
1151 type == SHT_SYMTAB ? "symtab" :
1152 type == SHT_STRTAB ? "strtab" :
1153 type == SHT_RELX ? "rel" : "???",
1154 s->data_offset,
1155 flags & SHF_ALLOC ? "alloc" : "",
1156 flags & SHF_WRITE ? "write" : "",
1157 flags & SHF_EXECINSTR ? "exec" : ""
1158 );
1159 }
1160 pe->s1->verbose = 2;
1161 #endif
1162
1163 tcc_free(section_order);
1164 return 0;
1165 }
1166
1167 /* ------------------------------------------------------------- */
1168 ST_FN void pe_relocate_rva (struct pe_info *pe, Section *s)
1169 {
1170 Section *sr = s->reloc;
1171 ElfW_Rel *rel, *rel_end;
1172 rel_end = (ElfW_Rel *)(sr->data + sr->data_offset);
1173 for(rel = (ElfW_Rel *)sr->data; rel < rel_end; rel++) {
1174 if (ELFW_R_(TYPE)(rel->r_info) == R_XXX_RELATIVE) {
1175 int sym_index = ELFW_R_(SYM)(rel->r_info);
1176 DWORD addr = s->sh_addr;
1177 if (sym_index) {
1178 ElfW(Sym) *sym = (ElfW(Sym) *)symtab_section->data + sym_index;
1179 addr = sym->st_value;
1180 }
1181 // printf("reloc rva %08x %08x\n", (DWORD)rel->r_offset, addr);
1182 *(DWORD*)(s->data + rel->r_offset) += addr - pe->imagebase;
1183 }
1184 }
1185 }
1186
1187 /*----------------------------------------------------------------------------*/
1188 static int pe_isafunc(int sym_index)
1189 {
1190 Section *sr = text_section->reloc;
1191 ElfW_Rel *rel, *rel_end;
1192 Elf32_Word info = ELF32_R_INFO(sym_index, R_386_PC32);
1193 if (!sr)
1194 return 0;
1195 rel_end = (ElfW_Rel *)(sr->data + sr->data_offset);
1196 for (rel = (ElfW_Rel *)sr->data; rel < rel_end; rel++)
1197 if (rel->r_info == info)
1198 return 1;
1199 return 0;
1200 }
1201
1202 /*----------------------------------------------------------------------------*/
1203 ST_FN int pe_check_symbols(struct pe_info *pe)
1204 {
1205 ElfW(Sym) *sym;
1206 int sym_index, sym_end;
1207 int ret = 0;
1208
1209 pe_align_section(text_section, 8);
1210
1211 sym_end = symtab_section->data_offset / sizeof(ElfW(Sym));
1212 for (sym_index = 1; sym_index < sym_end; ++sym_index) {
1213
1214 sym = (ElfW(Sym) *)symtab_section->data + sym_index;
1215 if (sym->st_shndx == SHN_UNDEF) {
1216
1217 const char *name = symtab_section->link->data + sym->st_name;
1218 unsigned type = ELFW_ST_TYPE(sym->st_info);
1219 int imp_sym = pe_find_import(pe->s1, name);
1220 struct import_symbol *is;
1221
1222 if (0 == imp_sym)
1223 goto not_found;
1224 is = pe_add_import(pe, imp_sym);
1225 if (!is)
1226 goto not_found;
1227
1228 if (type == STT_NOTYPE) {
1229 /* symbols from assembler have no type, find out which */
1230 if (pe_isafunc(sym_index))
1231 type = STT_FUNC;
1232 else
1233 type = STT_OBJECT;
1234 }
1235
1236 if (type == STT_FUNC) {
1237 unsigned long offset = is->thk_offset;
1238 if (offset) {
1239 /* got aliased symbol, like stricmp and _stricmp */
1240
1241 } else {
1242 char buffer[100];
1243 WORD *p;
1244
1245 offset = text_section->data_offset;
1246 /* add the 'jmp IAT[x]' instruction */
1247 p = section_ptr_add(text_section, 8);
1248 *p = 0x25FF;
1249 #ifdef TCC_TARGET_X86_64
1250 *(DWORD*)(p+1) = (DWORD)-4;
1251 #endif
1252 /* add a helper symbol, will be patched later in
1253 pe_build_imports */
1254 sprintf(buffer, "IAT.%s", name);
1255 is->iat_index = put_elf_sym(
1256 symtab_section, 0, sizeof(DWORD),
1257 ELFW_ST_INFO(STB_GLOBAL, STT_OBJECT),
1258 0, SHN_UNDEF, buffer);
1259 put_elf_reloc(symtab_section, text_section,
1260 offset + 2, R_XXX_THUNKFIX, is->iat_index);
1261 is->thk_offset = offset;
1262 }
1263
1264 /* tcc_realloc might have altered sym's address */
1265 sym = (ElfW(Sym) *)symtab_section->data + sym_index;
1266
1267 /* patch the original symbol */
1268 sym->st_value = offset;
1269 sym->st_shndx = text_section->sh_num;
1270 sym->st_other &= ~1; /* do not export */
1271 continue;
1272 }
1273
1274 if (type == STT_OBJECT) { /* data, ptr to that should be */
1275 if (0 == is->iat_index) {
1276 /* original symbol will be patched later in pe_build_imports */
1277 is->iat_index = sym_index;
1278 continue;
1279 }
1280 }
1281
1282 not_found:
1283 error_noabort("undefined symbol '%s'", name);
1284 ret = -1;
1285
1286 } else if (pe->s1->rdynamic
1287 && ELFW_ST_BIND(sym->st_info) != STB_LOCAL) {
1288 /* if -rdynamic option, then export all non local symbols */
1289 sym->st_other |= 1;
1290 }
1291 }
1292 return ret;
1293 }
1294
1295 /*----------------------------------------------------------------------------*/
1296 #ifdef PE_PRINT_SECTIONS
1297 ST_FN void pe_print_section(FILE * f, Section * s)
1298 {
1299 /* just if you'r curious */
1300 BYTE *p, *e, b;
1301 int i, n, l, m;
1302 p = s->data;
1303 e = s->data + s->data_offset;
1304 l = e - p;
1305
1306 fprintf(f, "section \"%s\"", s->name);
1307 if (s->link)
1308 fprintf(f, "\nlink \"%s\"", s->link->name);
1309 if (s->reloc)
1310 fprintf(f, "\nreloc \"%s\"", s->reloc->name);
1311 fprintf(f, "\nv_addr %08X", (unsigned)s->sh_addr);
1312 fprintf(f, "\ncontents %08X", (unsigned)l);
1313 fprintf(f, "\n\n");
1314
1315 if (s->sh_type == SHT_NOBITS)
1316 return;
1317
1318 if (0 == l)
1319 return;
1320
1321 if (s->sh_type == SHT_SYMTAB)
1322 m = sizeof(ElfW(Sym));
1323 else if (s->sh_type == SHT_RELX)
1324 m = sizeof(ElfW_Rel);
1325 else
1326 m = 16;
1327
1328 fprintf(f, "%-8s", "offset");
1329 for (i = 0; i < m; ++i)
1330 fprintf(f, " %02x", i);
1331 n = 56;
1332
1333 if (s->sh_type == SHT_SYMTAB || s->sh_type == SHT_RELX) {
1334 const char *fields1[] = {
1335 "name",
1336 "value",
1337 "size",
1338 "bind",
1339 "type",
1340 "other",
1341 "shndx",
1342 NULL
1343 };
1344
1345 const char *fields2[] = {
1346 "offs",
1347 "type",
1348 "symb",
1349 NULL
1350 };
1351
1352 const char **p;
1353
1354 if (s->sh_type == SHT_SYMTAB)
1355 p = fields1, n = 106;
1356 else
1357 p = fields2, n = 58;
1358
1359 for (i = 0; p[i]; ++i)
1360 fprintf(f, "%6s", p[i]);
1361 fprintf(f, " symbol");
1362 }
1363
1364 fprintf(f, "\n");
1365 for (i = 0; i < n; ++i)
1366 fprintf(f, "-");
1367 fprintf(f, "\n");
1368
1369 for (i = 0; i < l;)
1370 {
1371 fprintf(f, "%08X", i);
1372 for (n = 0; n < m; ++n) {
1373 if (n + i < l)
1374 fprintf(f, " %02X", p[i + n]);
1375 else
1376 fprintf(f, " ");
1377 }
1378
1379 if (s->sh_type == SHT_SYMTAB) {
1380 ElfW(Sym) *sym = (ElfW(Sym) *) (p + i);
1381 const char *name = s->link->data + sym->st_name;
1382 fprintf(f, " %04X %04X %04X %02X %02X %02X %04X \"%s\"",
1383 (unsigned)sym->st_name,
1384 (unsigned)sym->st_value,
1385 (unsigned)sym->st_size,
1386 (unsigned)ELFW_ST_BIND(sym->st_info),
1387 (unsigned)ELFW_ST_TYPE(sym->st_info),
1388 (unsigned)sym->st_other,
1389 (unsigned)sym->st_shndx,
1390 name);
1391
1392 } else if (s->sh_type == SHT_RELX) {
1393 ElfW_Rel *rel = (ElfW_Rel *) (p + i);
1394 ElfW(Sym) *sym =
1395 (ElfW(Sym) *) s->link->data + ELFW_R_(SYM)(rel->r_info);
1396 const char *name = s->link->link->data + sym->st_name;
1397 fprintf(f, " %04X %02X %04X \"%s\"",
1398 (unsigned)rel->r_offset,
1399 (unsigned)ELFW_R_(TYPE)(rel->r_info),
1400 (unsigned)ELFW_R_(SYM)(rel->r_info),
1401 name);
1402 } else {
1403 fprintf(f, " ");
1404 for (n = 0; n < m; ++n) {
1405 if (n + i < l) {
1406 b = p[i + n];
1407 if (b < 32 || b >= 127)
1408 b = '.';
1409 fprintf(f, "%c", b);
1410 }
1411 }
1412 }
1413 i += m;
1414 fprintf(f, "\n");
1415 }
1416 fprintf(f, "\n\n");
1417 }
1418
1419 ST_FN void pe_print_sections(TCCState *s1, const char *fname)
1420 {
1421 Section *s;
1422 FILE *f;
1423 int i;
1424 f = fopen(fname, "w");
1425 for (i = 1; i < s1->nb_sections; ++i) {
1426 s = s1->sections[i];
1427 pe_print_section(f, s);
1428 }
1429 pe_print_section(f, s1->dynsymtab_section);
1430 fclose(f);
1431 }
1432 #endif
1433
1434 /* ------------------------------------------------------------- */
1435
1436 ST_FN int read_mem(FILE *fp, unsigned offset, void *buffer, unsigned len)
1437 {
1438 fseek(fp, offset, 0);
1439 return len == fread(buffer, 1, len, fp);
1440 }
1441
1442 /* -------------------------------------------------------------
1443 * This is for compiled windows resources in 'coff' format
1444 * as generated by 'windres.exe -O coff ...'.
1445 */
1446
1447 ST_FN int pe_load_res(TCCState *s1, FILE *fp)
1448 {
1449 struct pe_rsrc_header hdr;
1450 Section *rsrc_section;
1451 int i, ret = -1;
1452 BYTE *ptr;
1453 unsigned offs;
1454
1455 if (!read_mem(fp, 0, &hdr, sizeof hdr))
1456 goto quit;
1457
1458 if (hdr.filehdr.Machine != 0x014C
1459 || hdr.filehdr.NumberOfSections != 1
1460 || strcmp(hdr.sectionhdr.Name, ".rsrc") != 0)
1461 goto quit;
1462
1463 rsrc_section = new_section(s1, ".rsrc", SHT_PROGBITS, SHF_ALLOC);
1464 ptr = section_ptr_add(rsrc_section, hdr.sectionhdr.SizeOfRawData);
1465 offs = hdr.sectionhdr.PointerToRawData;
1466 if (!read_mem(fp, offs, ptr, hdr.sectionhdr.SizeOfRawData))
1467 goto quit;
1468 offs = hdr.sectionhdr.PointerToRelocations;
1469 for (i = 0; i < hdr.sectionhdr.NumberOfRelocations; ++i)
1470 {
1471 struct pe_rsrc_reloc rel;
1472 if (!read_mem(fp, offs, &rel, sizeof rel))
1473 goto quit;
1474 // printf("rsrc_reloc: %x %x %x\n", rel.offset, rel.size, rel.type);
1475 if (rel.type != 7) /* DIR32NB */
1476 goto quit;
1477 put_elf_reloc(symtab_section, rsrc_section,
1478 rel.offset, R_XXX_RELATIVE, 0);
1479 offs += sizeof rel;
1480 }
1481 ret = 0;
1482 quit:
1483 return ret;
1484 }
1485
1486 /* ------------------------------------------------------------- */
1487 ST_FN char *trimfront(char *p)
1488 {
1489 while (*p && (unsigned char)*p <= ' ')
1490 ++p;
1491 return p;
1492 }
1493
1494 ST_FN char *trimback(char *a, char *e)
1495 {
1496 while (e > a && (unsigned char)e[-1] <= ' ')
1497 --e;
1498 *e = 0;;
1499 return a;
1500 }
1501
1502 ST_FN char *get_line(char *line, int size, FILE *fp)
1503 {
1504 if (NULL == fgets(line, size, fp))
1505 return NULL;
1506 trimback(line, strchr(line, 0));
1507 return trimfront(line);
1508 }
1509
1510 /* ------------------------------------------------------------- */
1511 ST_FN int pe_load_def(TCCState *s1, FILE *fp)
1512 {
1513 DLLReference *dllref;
1514 int state = 0, ret = -1;
1515 char line[400], dllname[80], *p;
1516
1517 for (;;) {
1518 p = get_line(line, sizeof line, fp);
1519 if (NULL == p)
1520 break;
1521 if (0 == *p || ';' == *p)
1522 continue;
1523 switch (state) {
1524 case 0:
1525 if (0 != strnicmp(p, "LIBRARY", 7))
1526 goto quit;
1527 strcpy(dllname, trimfront(p+7));
1528 ++state;
1529 continue;
1530
1531 case 1:
1532 if (0 != stricmp(p, "EXPORTS"))
1533 goto quit;
1534 ++state;
1535 continue;
1536
1537 case 2:
1538 dllref = tcc_mallocz(sizeof(DLLReference) + strlen(dllname));
1539 strcpy(dllref->name, dllname);
1540 dynarray_add((void ***) &s1->loaded_dlls, &s1->nb_loaded_dlls, dllref);
1541 ++state;
1542
1543 default:
1544 add_elf_sym(s1->dynsymtab_section,
1545 s1->nb_loaded_dlls, 0,
1546 ELFW_ST_INFO(STB_GLOBAL, STT_FUNC), 0,
1547 text_section->sh_num, p);
1548 continue;
1549 }
1550 }
1551 ret = 0;
1552 quit:
1553 return ret;
1554 }
1555
1556 /* ------------------------------------------------------------- */
1557 #define TINY_IMPDEF_GET_EXPORT_NAMES_ONLY
1558 #include "win32/tools/tiny_impdef.c"
1559
1560 ST_FN int pe_load_dll(TCCState *s1, const char *dllname, FILE *fp)
1561 {
1562 int i = 0;
1563 char *p, *q;
1564 p = get_export_names(fp);
1565 if (p) {
1566 DLLReference *dllref;
1567 dllref = tcc_mallocz(sizeof(DLLReference) + strlen(dllname));
1568 strcpy(dllref->name, dllname);
1569 dynarray_add((void ***) &s1->loaded_dlls, &s1->nb_loaded_dlls, dllref);
1570 for (q = p, i = 0; *q; ++i) {
1571 add_elf_sym(s1->dynsymtab_section,
1572 s1->nb_loaded_dlls, 0,
1573 ELFW_ST_INFO(STB_GLOBAL, STT_FUNC), 0,
1574 text_section->sh_num, q);
1575 q += 1 + strlen(q);
1576 }
1577 tcc_free(p);
1578 }
1579 return i ? 0 : -1;
1580 }
1581
1582 /* ------------------------------------------------------------- */
1583 PUB_FN int pe_load_file(struct TCCState *s1, const char *filename, int fd)
1584 {
1585 FILE *fp = fdopen(dup(fd), "rb");
1586 int ret = -1;
1587 char buf[10];
1588 if (fp) {
1589 if (0 == strcmp(tcc_fileextension(filename), ".def"))
1590 ret = pe_load_def(s1, fp);
1591 else if (pe_load_res(s1, fp) == 0)
1592 ret = 0;
1593 else if (read_mem(fp, 0, buf, sizeof buf) && 0 == strncmp(buf, "MZ", 2))
1594 ret = pe_load_dll(s1, tcc_basename(filename), fp);
1595 fclose(fp);
1596 }
1597 return ret;
1598 }
1599
1600 int pe_add_dll(struct TCCState *s, const char *libraryname)
1601 {
1602 char buf[MAX_PATH];
1603 snprintf(buf, sizeof(buf), "%s.def", libraryname);
1604 if (tcc_add_dll(s, buf, 0) == 0)
1605 return 0;
1606 snprintf(buf, sizeof(buf), "%s.dll", libraryname);
1607 if (tcc_add_dll(s, buf, 0) == 0)
1608 return 0;
1609 return -1;
1610 }
1611
1612 /* ------------------------------------------------------------- */
1613 #ifdef TCC_TARGET_X86_64
1614 #define PE_STDSYM(n,s) n
1615 #else
1616 #define PE_STDSYM(n,s) "_" n s
1617 #endif
1618
1619 ST_FN void pe_add_runtime_ex(TCCState *s1, struct pe_info *pe)
1620 {
1621 const char *start_symbol;
1622 unsigned long addr = 0;
1623 int pe_type = 0;
1624
1625 if (find_elf_sym(symtab_section, PE_STDSYM("WinMain","@16")))
1626 pe_type = PE_GUI;
1627 else
1628 if (TCC_OUTPUT_DLL == s1->output_type) {
1629 pe_type = PE_DLL;
1630 /* need this for 'tccelf.c:relocate_section()' */
1631 s1->output_type = TCC_OUTPUT_EXE;
1632 }
1633
1634 start_symbol =
1635 TCC_OUTPUT_MEMORY == s1->output_type
1636 ? PE_GUI == pe_type ? "_runwinmain" : NULL
1637 : PE_DLL == pe_type ? PE_STDSYM("_dllstart","@12")
1638 : PE_GUI == pe_type ? "_winstart" : "_start"
1639 ;
1640
1641 /* grab the startup code from libtcc1 */
1642 if (start_symbol)
1643 add_elf_sym(symtab_section,
1644 0, 0,
1645 ELFW_ST_INFO(STB_GLOBAL, STT_NOTYPE), 0,
1646 SHN_UNDEF, start_symbol);
1647
1648 if (0 == s1->nostdlib) {
1649 static const char *libs[] = {
1650 "tcc1", "msvcrt", "kernel32", "", "user32", "gdi32", NULL
1651 };
1652 const char **pp, *p;
1653 for (pp = libs; 0 != (p = *pp); ++pp) {
1654 if (0 == *p) {
1655 if (PE_DLL != pe_type && PE_GUI != pe_type)
1656 break;
1657 } else if (tcc_add_library(s1, p) < 0)
1658 error_noabort("cannot find library: %s", p);
1659 }
1660 }
1661
1662 if (start_symbol) {
1663 addr = (uplong)tcc_get_symbol_err(s1, start_symbol);
1664 if (s1->output_type == TCC_OUTPUT_MEMORY && addr)
1665 /* for -run GUI's, put '_runwinmain' instead of 'main' */
1666 add_elf_sym(symtab_section,
1667 addr, 0,
1668 ELFW_ST_INFO(STB_GLOBAL, STT_NOTYPE), 0,
1669 text_section->sh_num, "main");
1670 }
1671
1672 pe->type = pe_type;
1673 pe->start_addr = addr;
1674 }
1675
1676 PUB_FN int pe_output_file(TCCState * s1, const char *filename)
1677 {
1678 int ret;
1679 struct pe_info pe;
1680 int i;
1681
1682 memset(&pe, 0, sizeof pe);
1683 pe.filename = filename;
1684 pe.s1 = s1;
1685
1686 pe_add_runtime_ex(s1, &pe);
1687 relocate_common_syms(); /* assign bss adresses */
1688 tcc_add_linker_symbols(s1);
1689
1690 ret = pe_check_symbols(&pe);
1691 if (ret)
1692 return ret;
1693
1694 if (filename) {
1695 if (PE_DLL == pe.type) {
1696 pe.reloc = new_section(pe.s1, ".reloc", SHT_PROGBITS, 0);
1697 /* XXX: check if is correct for arm-pe target */
1698 pe.imagebase = 0x10000000;
1699 } else {
1700 #if defined(TCC_TARGET_ARM)
1701 pe.imagebase = 0x00010000;
1702 #else
1703 pe.imagebase = 0x00400000;
1704 #endif
1705 }
1706
1707 /* if no subsystem specified, we use "console" subsystem by default */
1708 if (s1->pe_subsystem != 0)
1709 pe.subsystem = s1->pe_subsystem;
1710 else
1711 #if defined(TCC_TARGET_ARM)
1712 pe.subsystem = 3;
1713 #else
1714 pe.subsystem = 9;
1715 #endif
1716 /* set default file/section alignment */
1717 if (pe.subsystem == 1) {
1718 pe.section_align = 0x20;
1719 pe.file_align = 0x20;
1720 } else {
1721 pe.section_align = 0x1000;
1722 pe.file_align = 0x200;
1723 }
1724
1725 if (s1->section_align != 0)
1726 pe.section_align = s1->section_align;
1727 if (s1->pe_file_align != 0)
1728 pe.file_align = s1->pe_file_align;
1729
1730 if ((pe.subsystem >= 10) && (pe.subsystem <= 12))
1731 pe.imagebase = 0;
1732
1733 if (s1->has_text_addr)
1734 pe.imagebase = s1->text_addr;
1735
1736 pe_assign_addresses(&pe);
1737 relocate_syms(s1, 0);
1738 for (i = 1; i < s1->nb_sections; ++i) {
1739 Section *s = s1->sections[i];
1740 if (s->reloc) {
1741 relocate_section(s1, s);
1742 pe_relocate_rva(&pe, s);
1743 }
1744 }
1745 if (s1->nb_errors)
1746 ret = -1;
1747 else
1748 ret = pe_write(&pe);
1749 tcc_free(pe.sec_info);
1750 } else {
1751 #ifndef TCC_IS_NATIVE
1752 error_noabort("-run supported only on native platform");
1753 #endif
1754 pe.type = PE_RUN;
1755 pe.thunk = data_section;
1756 pe_build_imports(&pe);
1757 }
1758
1759 #ifdef PE_PRINT_SECTIONS
1760 pe_print_sections(s1, "tcc.log");
1761 #endif
1762 return ret;
1763 }
1764
1765 /* ------------------------------------------------------------- */
1766 #endif /* def TCC_TARGET_PE */
1767 /* ------------------------------------------------------------- */
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