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lib/bcheck: Prevent __bound_local_new / __bound_local_delete from being miscompiled
[tinycc.git] / tccpe.c
blob187b71066ceda6c2f10873c8287f07a5c204f56c
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 #ifndef _WIN32
24 #define stricmp strcasecmp
25 #define strnicmp strncasecmp
26 #endif
27
28 #ifndef MAX_PATH
29 #define MAX_PATH 260
30 #endif
31
32 #define PE_MERGE_DATA
33 // #define PE_PRINT_SECTIONS
34
35 #ifdef TCC_TARGET_X86_64
36 # define ADDR3264 ULONGLONG
37 #else
38 # define ADDR3264 DWORD
39 #endif
40
41 #ifdef _WIN32
42 void dbg_printf (const char *fmt, ...)
43 {
44 char buffer[4000];
45 va_list arg;
46 int x;
47 va_start(arg, fmt);
48 x = vsprintf (buffer, fmt, arg);
49 strcpy(buffer+x, "\n");
50 OutputDebugString(buffer);
51 }
52 #endif
53
54 /* ----------------------------------------------------------- */
55 #ifndef IMAGE_NT_SIGNATURE
56 /* ----------------------------------------------------------- */
57 /* definitions below are from winnt.h */
58
59 typedef unsigned char BYTE;
60 typedef unsigned short WORD;
61 typedef unsigned int DWORD;
62 typedef unsigned long long ULONGLONG;
63 #pragma pack(push, 1)
64
65 typedef struct _IMAGE_DOS_HEADER { /* DOS .EXE header */
66 WORD e_magic; /* Magic number */
67 WORD e_cblp; /* Bytes on last page of file */
68 WORD e_cp; /* Pages in file */
69 WORD e_crlc; /* Relocations */
70 WORD e_cparhdr; /* Size of header in paragraphs */
71 WORD e_minalloc; /* Minimum extra paragraphs needed */
72 WORD e_maxalloc; /* Maximum extra paragraphs needed */
73 WORD e_ss; /* Initial (relative) SS value */
74 WORD e_sp; /* Initial SP value */
75 WORD e_csum; /* Checksum */
76 WORD e_ip; /* Initial IP value */
77 WORD e_cs; /* Initial (relative) CS value */
78 WORD e_lfarlc; /* File address of relocation table */
79 WORD e_ovno; /* Overlay number */
80 WORD e_res[4]; /* Reserved words */
81 WORD e_oemid; /* OEM identifier (for e_oeminfo) */
82 WORD e_oeminfo; /* OEM information; e_oemid specific */
83 WORD e_res2[10]; /* Reserved words */
84 DWORD e_lfanew; /* File address of new exe header */
85 } IMAGE_DOS_HEADER, *PIMAGE_DOS_HEADER;
86
87 #define IMAGE_NT_SIGNATURE 0x00004550 /* PE00 */
88 #define SIZE_OF_NT_SIGNATURE 4
89
90 typedef struct _IMAGE_FILE_HEADER {
91 WORD Machine;
92 WORD NumberOfSections;
93 DWORD TimeDateStamp;
94 DWORD PointerToSymbolTable;
95 DWORD NumberOfSymbols;
96 WORD SizeOfOptionalHeader;
97 WORD Characteristics;
98 } IMAGE_FILE_HEADER, *PIMAGE_FILE_HEADER;
99
100
101 #define IMAGE_SIZEOF_FILE_HEADER 20
102
103 typedef struct _IMAGE_DATA_DIRECTORY {
104 DWORD VirtualAddress;
105 DWORD Size;
106 } IMAGE_DATA_DIRECTORY, *PIMAGE_DATA_DIRECTORY;
107
108
109 typedef struct _IMAGE_OPTIONAL_HEADER {
110 /* Standard fields. */
111 WORD Magic;
112 BYTE MajorLinkerVersion;
113 BYTE MinorLinkerVersion;
114 DWORD SizeOfCode;
115 DWORD SizeOfInitializedData;
116 DWORD SizeOfUninitializedData;
117 DWORD AddressOfEntryPoint;
118 DWORD BaseOfCode;
119 #ifndef TCC_TARGET_X86_64
120 DWORD BaseOfData;
121 #endif
122 /* NT additional fields. */
123 ADDR3264 ImageBase;
124 DWORD SectionAlignment;
125 DWORD FileAlignment;
126 WORD MajorOperatingSystemVersion;
127 WORD MinorOperatingSystemVersion;
128 WORD MajorImageVersion;
129 WORD MinorImageVersion;
130 WORD MajorSubsystemVersion;
131 WORD MinorSubsystemVersion;
132 DWORD Win32VersionValue;
133 DWORD SizeOfImage;
134 DWORD SizeOfHeaders;
135 DWORD CheckSum;
136 WORD Subsystem;
137 WORD DllCharacteristics;
138 ADDR3264 SizeOfStackReserve;
139 ADDR3264 SizeOfStackCommit;
140 ADDR3264 SizeOfHeapReserve;
141 ADDR3264 SizeOfHeapCommit;
142 DWORD LoaderFlags;
143 DWORD NumberOfRvaAndSizes;
144 IMAGE_DATA_DIRECTORY DataDirectory[16];
145 } IMAGE_OPTIONAL_HEADER32, IMAGE_OPTIONAL_HEADER64, IMAGE_OPTIONAL_HEADER;
146
147 #define IMAGE_DIRECTORY_ENTRY_EXPORT 0 /* Export Directory */
148 #define IMAGE_DIRECTORY_ENTRY_IMPORT 1 /* Import Directory */
149 #define IMAGE_DIRECTORY_ENTRY_RESOURCE 2 /* Resource Directory */
150 #define IMAGE_DIRECTORY_ENTRY_EXCEPTION 3 /* Exception Directory */
151 #define IMAGE_DIRECTORY_ENTRY_SECURITY 4 /* Security Directory */
152 #define IMAGE_DIRECTORY_ENTRY_BASERELOC 5 /* Base Relocation Table */
153 #define IMAGE_DIRECTORY_ENTRY_DEBUG 6 /* Debug Directory */
154 /* IMAGE_DIRECTORY_ENTRY_COPYRIGHT 7 (X86 usage) */
155 #define IMAGE_DIRECTORY_ENTRY_ARCHITECTURE 7 /* Architecture Specific Data */
156 #define IMAGE_DIRECTORY_ENTRY_GLOBALPTR 8 /* RVA of GP */
157 #define IMAGE_DIRECTORY_ENTRY_TLS 9 /* TLS Directory */
158 #define IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG 10 /* Load Configuration Directory */
159 #define IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT 11 /* Bound Import Directory in headers */
160 #define IMAGE_DIRECTORY_ENTRY_IAT 12 /* Import Address Table */
161 #define IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT 13 /* Delay Load Import Descriptors */
162 #define IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR 14 /* COM Runtime descriptor */
163
164 /* Section header format. */
165 #define IMAGE_SIZEOF_SHORT_NAME 8
166
167 typedef struct _IMAGE_SECTION_HEADER {
168 BYTE Name[IMAGE_SIZEOF_SHORT_NAME];
169 union {
170 DWORD PhysicalAddress;
171 DWORD VirtualSize;
172 } Misc;
173 DWORD VirtualAddress;
174 DWORD SizeOfRawData;
175 DWORD PointerToRawData;
176 DWORD PointerToRelocations;
177 DWORD PointerToLinenumbers;
178 WORD NumberOfRelocations;
179 WORD NumberOfLinenumbers;
180 DWORD Characteristics;
181 } IMAGE_SECTION_HEADER, *PIMAGE_SECTION_HEADER;
182
183 #define IMAGE_SIZEOF_SECTION_HEADER 40
184
185 typedef struct _IMAGE_EXPORT_DIRECTORY {
186 DWORD Characteristics;
187 DWORD TimeDateStamp;
188 WORD MajorVersion;
189 WORD MinorVersion;
190 DWORD Name;
191 DWORD Base;
192 DWORD NumberOfFunctions;
193 DWORD NumberOfNames;
194 DWORD AddressOfFunctions;
195 DWORD AddressOfNames;
196 DWORD AddressOfNameOrdinals;
197 } IMAGE_EXPORT_DIRECTORY,*PIMAGE_EXPORT_DIRECTORY;
198
199 typedef struct _IMAGE_IMPORT_DESCRIPTOR {
200 union {
201 DWORD Characteristics;
202 DWORD OriginalFirstThunk;
203 };
204 DWORD TimeDateStamp;
205 DWORD ForwarderChain;
206 DWORD Name;
207 DWORD FirstThunk;
208 } IMAGE_IMPORT_DESCRIPTOR;
209
210 typedef struct _IMAGE_BASE_RELOCATION {
211 DWORD VirtualAddress;
212 DWORD SizeOfBlock;
213 // WORD TypeOffset[1];
214 } IMAGE_BASE_RELOCATION;
215
216 #define IMAGE_SIZEOF_BASE_RELOCATION 8
217
218 #define IMAGE_REL_BASED_ABSOLUTE 0
219 #define IMAGE_REL_BASED_HIGH 1
220 #define IMAGE_REL_BASED_LOW 2
221 #define IMAGE_REL_BASED_HIGHLOW 3
222 #define IMAGE_REL_BASED_HIGHADJ 4
223 #define IMAGE_REL_BASED_MIPS_JMPADDR 5
224 #define IMAGE_REL_BASED_SECTION 6
225 #define IMAGE_REL_BASED_REL32 7
226
227 #pragma pack(pop)
228
229 /* ----------------------------------------------------------- */
230 #endif /* ndef IMAGE_NT_SIGNATURE */
231 /* ----------------------------------------------------------- */
232 #pragma pack(push, 1)
233
234 struct pe_header
235 {
236 IMAGE_DOS_HEADER doshdr;
237 BYTE dosstub[0x40];
238 DWORD nt_sig;
239 IMAGE_FILE_HEADER filehdr;
240 #ifdef TCC_TARGET_X86_64
241 IMAGE_OPTIONAL_HEADER64 opthdr;
242 #else
243 #ifdef _WIN64
244 IMAGE_OPTIONAL_HEADER32 opthdr;
245 #else
246 IMAGE_OPTIONAL_HEADER opthdr;
247 #endif
248 #endif
249 };
250
251 struct pe_reloc_header {
252 DWORD offset;
253 DWORD size;
254 };
255
256 struct pe_rsrc_header {
257 struct _IMAGE_FILE_HEADER filehdr;
258 struct _IMAGE_SECTION_HEADER sectionhdr;
259 };
260
261 struct pe_rsrc_reloc {
262 DWORD offset;
263 DWORD size;
264 WORD type;
265 };
266
267 #pragma pack(pop)
268
269 /* ------------------------------------------------------------- */
270 /* internal temporary structures */
271
272 /*
273 #define IMAGE_SCN_CNT_CODE 0x00000020
274 #define IMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040
275 #define IMAGE_SCN_CNT_UNINITIALIZED_DATA 0x00000080
276 #define IMAGE_SCN_MEM_DISCARDABLE 0x02000000
277 #define IMAGE_SCN_MEM_SHARED 0x10000000
278 #define IMAGE_SCN_MEM_EXECUTE 0x20000000
279 #define IMAGE_SCN_MEM_READ 0x40000000
280 #define IMAGE_SCN_MEM_WRITE 0x80000000
281 */
282
283 enum {
284 sec_text = 0,
285 sec_data ,
286 sec_bss ,
287 sec_idata ,
288 sec_pdata ,
289 sec_other ,
290 sec_rsrc ,
291 sec_stab ,
292 sec_reloc ,
293 sec_last
294 };
295
296 static const DWORD pe_sec_flags[] = {
297 0x60000020, /* ".text" , */
298 0xC0000040, /* ".data" , */
299 0xC0000080, /* ".bss" , */
300 0x40000040, /* ".idata" , */
301 0x40000040, /* ".pdata" , */
302 0xE0000060, /* < other > , */
303 0x40000040, /* ".rsrc" , */
304 0x42000802, /* ".stab" , */
305 0x42000040, /* ".reloc" , */
306 };
307
308 struct section_info {
309 int cls, ord;
310 char name[32];
311 DWORD sh_addr;
312 DWORD sh_size;
313 DWORD sh_flags;
314 unsigned char *data;
315 DWORD data_size;
316 IMAGE_SECTION_HEADER ish;
317 };
318
319 struct import_symbol {
320 int sym_index;
321 int iat_index;
322 int thk_offset;
323 };
324
325 struct pe_import_info {
326 int dll_index;
327 int sym_count;
328 struct import_symbol **symbols;
329 };
330
331 struct pe_info {
332 TCCState *s1;
333 Section *reloc;
334 Section *thunk;
335 const char *filename;
336 int type;
337 DWORD sizeofheaders;
338 ADDR3264 imagebase;
339 DWORD start_addr;
340 DWORD imp_offs;
341 DWORD imp_size;
342 DWORD iat_offs;
343 DWORD iat_size;
344 DWORD exp_offs;
345 DWORD exp_size;
346 int subsystem;
347 DWORD section_align;
348 DWORD file_align;
349 struct section_info *sec_info;
350 int sec_count;
351 struct pe_import_info **imp_info;
352 int imp_count;
353 };
354
355 #define PE_NUL 0
356 #define PE_DLL 1
357 #define PE_GUI 2
358 #define PE_EXE 3
359 #define PE_RUN 4
360
361 /* --------------------------------------------*/
362
363 static const char *pe_export_name(TCCState *s1, ElfW(Sym) *sym)
364 {
365 const char *name = symtab_section->link->data + sym->st_name;
366 if (s1->leading_underscore && name[0] == '_' && !(sym->st_other & 2))
367 return name + 1;
368 return name;
369 }
370
371 static int pe_find_import(TCCState * s1, ElfW(Sym) *sym)
372 {
373 char buffer[200];
374 const char *s, *p;
375 int sym_index = 0, n = 0;
376
377 do {
378 s = pe_export_name(s1, sym);
379 if (n) {
380 /* second try: */
381 if (sym->st_other & 2) {
382 /* try w/0 stdcall deco (windows API convention) */
383 p = strrchr(s, '@');
384 if (!p || s[0] != '_')
385 break;
386 strcpy(buffer, s+1)[p-s-1] = 0;
387 } else if (s[0] != '_') { /* try non-ansi function */
388 buffer[0] = '_', strcpy(buffer + 1, s);
389 } else if (0 == memcmp(s, "__imp__", 7)) { /* mingw 2.0 */
390 strcpy(buffer, s + 6);
391 } else if (0 == memcmp(s, "_imp___", 7)) { /* mingw 3.7 */
392 strcpy(buffer, s + 6);
393 } else {
394 break;
395 }
396 s = buffer;
397 }
398 sym_index = find_elf_sym(s1->dynsymtab_section, s);
399 // printf("find (%d) %d %s\n", n, sym_index, s);
400 } while (0 == sym_index && ++n < 2);
401 return sym_index;
402 }
403
404 /*----------------------------------------------------------------------------*/
405
406 static int dynarray_assoc(void **pp, int n, int key)
407 {
408 int i;
409 for (i = 0; i < n; ++i, ++pp)
410 if (key == **(int **) pp)
411 return i;
412 return -1;
413 }
414
415 #if 0
416 ST_FN DWORD umin(DWORD a, DWORD b)
417 {
418 return a < b ? a : b;
419 }
420 #endif
421
422 static DWORD umax(DWORD a, DWORD b)
423 {
424 return a < b ? b : a;
425 }
426
427 static DWORD pe_file_align(struct pe_info *pe, DWORD n)
428 {
429 return (n + (pe->file_align - 1)) & ~(pe->file_align - 1);
430 }
431
432 static DWORD pe_virtual_align(struct pe_info *pe, DWORD n)
433 {
434 return (n + (pe->section_align - 1)) & ~(pe->section_align - 1);
435 }
436
437 static void pe_align_section(Section *s, int a)
438 {
439 int i = s->data_offset & (a-1);
440 if (i)
441 section_ptr_add(s, a - i);
442 }
443
444 static void pe_set_datadir(struct pe_header *hdr, int dir, DWORD addr, DWORD size)
445 {
446 hdr->opthdr.DataDirectory[dir].VirtualAddress = addr;
447 hdr->opthdr.DataDirectory[dir].Size = size;
448 }
449
450 static int pe_fwrite(void *data, unsigned len, FILE *fp, DWORD *psum)
451 {
452 if (psum) {
453 DWORD sum = *psum;
454 WORD *p = data;
455 int i;
456 for (i = len; i > 0; i -= 2) {
457 sum += (i >= 2) ? *p++ : *(BYTE*)p;
458 sum = (sum + (sum >> 16)) & 0xFFFF;
459 }
460 *psum = sum;
461 }
462 return len == fwrite(data, 1, len, fp) ? 0 : -1;
463 }
464
465 static void pe_fpad(FILE *fp, DWORD new_pos)
466 {
467 DWORD pos = ftell(fp);
468 while (++pos <= new_pos)
469 fputc(0, fp);
470 }
471
472 /*----------------------------------------------------------------------------*/
473 static int pe_write(struct pe_info *pe)
474 {
475 static const struct pe_header pe_template = {
476 {
477 /* IMAGE_DOS_HEADER doshdr */
478 0x5A4D, /*WORD e_magic; Magic number */
479 0x0090, /*WORD e_cblp; Bytes on last page of file */
480 0x0003, /*WORD e_cp; Pages in file */
481 0x0000, /*WORD e_crlc; Relocations */
482
483 0x0004, /*WORD e_cparhdr; Size of header in paragraphs */
484 0x0000, /*WORD e_minalloc; Minimum extra paragraphs needed */
485 0xFFFF, /*WORD e_maxalloc; Maximum extra paragraphs needed */
486 0x0000, /*WORD e_ss; Initial (relative) SS value */
487
488 0x00B8, /*WORD e_sp; Initial SP value */
489 0x0000, /*WORD e_csum; Checksum */
490 0x0000, /*WORD e_ip; Initial IP value */
491 0x0000, /*WORD e_cs; Initial (relative) CS value */
492 0x0040, /*WORD e_lfarlc; File address of relocation table */
493 0x0000, /*WORD e_ovno; Overlay number */
494 {0,0,0,0}, /*WORD e_res[4]; Reserved words */
495 0x0000, /*WORD e_oemid; OEM identifier (for e_oeminfo) */
496 0x0000, /*WORD e_oeminfo; OEM information; e_oemid specific */
497 {0,0,0,0,0,0,0,0,0,0}, /*WORD e_res2[10]; Reserved words */
498 0x00000080 /*DWORD e_lfanew; File address of new exe header */
499 },{
500 /* BYTE dosstub[0x40] */
501 /* 14 code bytes + "This program cannot be run in DOS mode.\r\r\n$" + 6 * 0x00 */
502 0x0e,0x1f,0xba,0x0e,0x00,0xb4,0x09,0xcd,0x21,0xb8,0x01,0x4c,0xcd,0x21,0x54,0x68,
503 0x69,0x73,0x20,0x70,0x72,0x6f,0x67,0x72,0x61,0x6d,0x20,0x63,0x61,0x6e,0x6e,0x6f,
504 0x74,0x20,0x62,0x65,0x20,0x72,0x75,0x6e,0x20,0x69,0x6e,0x20,0x44,0x4f,0x53,0x20,
505 0x6d,0x6f,0x64,0x65,0x2e,0x0d,0x0d,0x0a,0x24,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
506 },
507 0x00004550, /* DWORD nt_sig = IMAGE_NT_SIGNATURE */
508 {
509 /* IMAGE_FILE_HEADER filehdr */
510 #if defined(TCC_TARGET_I386)
511 0x014C, /*WORD Machine; */
512 #elif defined(TCC_TARGET_X86_64)
513 0x8664, /*WORD Machine; */
514 #elif defined(TCC_TARGET_ARM)
515 0x01C0, /*WORD Machine; */
516 #endif
517 0x0003, /*WORD NumberOfSections; */
518 0x00000000, /*DWORD TimeDateStamp; */
519 0x00000000, /*DWORD PointerToSymbolTable; */
520 0x00000000, /*DWORD NumberOfSymbols; */
521 #if defined(TCC_TARGET_X86_64)
522 0x00F0, /*WORD SizeOfOptionalHeader; */
523 0x022F /*WORD Characteristics; */
524 #define CHARACTERISTICS_DLL 0x222E
525 #elif defined(TCC_TARGET_I386)
526 0x00E0, /*WORD SizeOfOptionalHeader; */
527 0x030F /*WORD Characteristics; */
528 #define CHARACTERISTICS_DLL 0x230E
529 #elif defined(TCC_TARGET_ARM)
530 0x00E0, /*WORD SizeOfOptionalHeader; */
531 0x010F, /*WORD Characteristics; */
532 #define CHARACTERISTICS_DLL 0x230F
533 #endif
534 },{
535 /* IMAGE_OPTIONAL_HEADER opthdr */
536 /* Standard fields. */
537 #ifdef TCC_TARGET_X86_64
538 0x020B, /*WORD Magic; */
539 #else
540 0x010B, /*WORD Magic; */
541 #endif
542 0x06, /*BYTE MajorLinkerVersion; */
543 0x00, /*BYTE MinorLinkerVersion; */
544 0x00000000, /*DWORD SizeOfCode; */
545 0x00000000, /*DWORD SizeOfInitializedData; */
546 0x00000000, /*DWORD SizeOfUninitializedData; */
547 0x00000000, /*DWORD AddressOfEntryPoint; */
548 0x00000000, /*DWORD BaseOfCode; */
549 #ifndef TCC_TARGET_X86_64
550 0x00000000, /*DWORD BaseOfData; */
551 #endif
552 /* NT additional fields. */
553 #if defined(TCC_TARGET_ARM)
554 0x00100000, /*DWORD ImageBase; */
555 #else
556 0x00400000, /*DWORD ImageBase; */
557 #endif
558 0x00001000, /*DWORD SectionAlignment; */
559 0x00000200, /*DWORD FileAlignment; */
560 0x0004, /*WORD MajorOperatingSystemVersion; */
561 0x0000, /*WORD MinorOperatingSystemVersion; */
562 0x0000, /*WORD MajorImageVersion; */
563 0x0000, /*WORD MinorImageVersion; */
564 0x0004, /*WORD MajorSubsystemVersion; */
565 0x0000, /*WORD MinorSubsystemVersion; */
566 0x00000000, /*DWORD Win32VersionValue; */
567 0x00000000, /*DWORD SizeOfImage; */
568 0x00000200, /*DWORD SizeOfHeaders; */
569 0x00000000, /*DWORD CheckSum; */
570 0x0002, /*WORD Subsystem; */
571 0x0000, /*WORD DllCharacteristics; */
572 0x00100000, /*DWORD SizeOfStackReserve; */
573 0x00001000, /*DWORD SizeOfStackCommit; */
574 0x00100000, /*DWORD SizeOfHeapReserve; */
575 0x00001000, /*DWORD SizeOfHeapCommit; */
576 0x00000000, /*DWORD LoaderFlags; */
577 0x00000010, /*DWORD NumberOfRvaAndSizes; */
578
579 /* IMAGE_DATA_DIRECTORY DataDirectory[16]; */
580 {{0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0},
581 {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}}
582 }};
583
584 struct pe_header pe_header = pe_template;
585
586 int i;
587 FILE *op;
588 DWORD file_offset, sum;
589 struct section_info *si;
590 IMAGE_SECTION_HEADER *psh;
591
592 op = fopen(pe->filename, "wb");
593 if (NULL == op) {
594 tcc_error_noabort("could not write '%s': %s", pe->filename, strerror(errno));
595 return -1;
596 }
597
598 pe->sizeofheaders = pe_file_align(pe,
599 sizeof (struct pe_header)
600 + pe->sec_count * sizeof (IMAGE_SECTION_HEADER)
601 );
602
603 file_offset = pe->sizeofheaders;
604
605 if (2 == pe->s1->verbose)
606 printf("-------------------------------"
607 "\n virt file size section" "\n");
608 for (i = 0; i < pe->sec_count; ++i) {
609 DWORD addr, size;
610 const char *sh_name;
611
612 si = pe->sec_info + i;
613 sh_name = si->name;
614 addr = si->sh_addr - pe->imagebase;
615 size = si->sh_size;
616 psh = &si->ish;
617
618 if (2 == pe->s1->verbose)
619 printf("%6x %6x %6x %s\n",
620 (unsigned)addr, (unsigned)file_offset, (unsigned)size, sh_name);
621
622 switch (si->cls) {
623 case sec_text:
624 pe_header.opthdr.BaseOfCode = addr;
625 pe_header.opthdr.AddressOfEntryPoint = addr + pe->start_addr;
626 break;
627
628 case sec_data:
629 #ifndef TCC_TARGET_X86_64
630 pe_header.opthdr.BaseOfData = addr;
631 #endif
632 break;
633
634 case sec_bss:
635 break;
636
637 case sec_reloc:
638 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_BASERELOC, addr, size);
639 break;
640
641 case sec_rsrc:
642 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_RESOURCE, addr, size);
643 break;
644
645 case sec_pdata:
646 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_EXCEPTION, addr, size);
647 break;
648
649 case sec_stab:
650 break;
651 }
652
653 if (pe->thunk == pe->s1->sections[si->ord]) {
654 if (pe->imp_size) {
655 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_IMPORT,
656 pe->imp_offs + addr, pe->imp_size);
657 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_IAT,
658 pe->iat_offs + addr, pe->iat_size);
659 }
660 if (pe->exp_size) {
661 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_EXPORT,
662 pe->exp_offs + addr, pe->exp_size);
663 }
664 }
665
666 strcpy((char*)psh->Name, sh_name);
667
668 psh->Characteristics = pe_sec_flags[si->cls];
669 psh->VirtualAddress = addr;
670 psh->Misc.VirtualSize = size;
671 pe_header.opthdr.SizeOfImage =
672 umax(pe_virtual_align(pe, size + addr), pe_header.opthdr.SizeOfImage);
673
674 if (si->data_size) {
675 psh->PointerToRawData = file_offset;
676 file_offset = pe_file_align(pe, file_offset + si->data_size);
677 psh->SizeOfRawData = file_offset - psh->PointerToRawData;
678 }
679 }
680
681 //pe_header.filehdr.TimeDateStamp = time(NULL);
682 pe_header.filehdr.NumberOfSections = pe->sec_count;
683 pe_header.opthdr.SizeOfHeaders = pe->sizeofheaders;
684 pe_header.opthdr.ImageBase = pe->imagebase;
685 if (pe->s1->pe_stack_size)
686 pe_header.opthdr.SizeOfStackReserve = pe->s1->pe_stack_size;
687 if (PE_DLL == pe->type)
688 pe_header.filehdr.Characteristics = CHARACTERISTICS_DLL;
689 else if (PE_GUI != pe->type)
690 pe_header.opthdr.Subsystem = 3;
691 if (pe->subsystem == 9) // WinCE
692 pe_header.opthdr.Subsystem = 9;
693
694 sum = 0;
695 pe_fwrite(&pe_header, sizeof pe_header, op, &sum);
696 for (i = 0; i < pe->sec_count; ++i)
697 pe_fwrite(&pe->sec_info[i].ish, sizeof(IMAGE_SECTION_HEADER), op, &sum);
698 pe_fpad(op, pe->sizeofheaders);
699 for (i = 0; i < pe->sec_count; ++i) {
700 si = pe->sec_info + i;
701 psh = &si->ish;
702 if (si->data_size) {
703 pe_fwrite(si->data, si->data_size, op, &sum);
704 file_offset = psh->PointerToRawData + psh->SizeOfRawData;
705 pe_fpad(op, file_offset);
706 }
707 }
708
709 pe_header.opthdr.CheckSum = sum + file_offset;
710 fseek(op, offsetof(struct pe_header, opthdr.CheckSum), SEEK_SET);
711 pe_fwrite(&pe_header.opthdr.CheckSum, sizeof pe_header.opthdr.CheckSum, op, NULL);
712 fclose (op);
713
714 if (2 == pe->s1->verbose)
715 printf("-------------------------------\n");
716 if (pe->s1->verbose)
717 printf("<- %s (%u bytes)\n", pe->filename, (unsigned)file_offset);
718
719 return 0;
720 }
721
722 /*----------------------------------------------------------------------------*/
723
724 #if defined(TCC_TARGET_X86_64)
725 #define REL_TYPE_DIRECT R_X86_64_64
726 #define R_XXX_THUNKFIX R_X86_64_PC32
727 #define R_XXX_RELATIVE R_X86_64_RELATIVE
728
729 #elif defined(TCC_TARGET_I386)
730 #define REL_TYPE_DIRECT R_386_32
731 #define R_XXX_THUNKFIX R_386_32
732 #define R_XXX_RELATIVE R_386_RELATIVE
733
734 #elif defined(TCC_TARGET_ARM)
735 #define REL_TYPE_DIRECT R_ARM_ABS32
736 #define R_XXX_THUNKFIX R_ARM_ABS32
737 #define R_XXX_RELATIVE R_ARM_RELATIVE
738
739 #endif
740 /*----------------------------------------------------------------------------*/
741
742 static struct import_symbol *pe_add_import(struct pe_info *pe, int sym_index)
743 {
744 int i;
745 int dll_index;
746 struct pe_import_info *p;
747 struct import_symbol *s;
748 ElfW(Sym) *isym;
749
750 isym = (ElfW(Sym) *)pe->s1->dynsymtab_section->data + sym_index;
751 dll_index = isym->st_size;
752
753 i = dynarray_assoc ((void**)pe->imp_info, pe->imp_count, dll_index);
754 if (-1 != i) {
755 p = pe->imp_info[i];
756 goto found_dll;
757 }
758 p = tcc_mallocz(sizeof *p);
759 p->dll_index = dll_index;
760 dynarray_add((void***)&pe->imp_info, &pe->imp_count, p);
761
762 found_dll:
763 i = dynarray_assoc ((void**)p->symbols, p->sym_count, sym_index);
764 if (-1 != i)
765 return p->symbols[i];
766
767 s = tcc_mallocz(sizeof *s);
768 dynarray_add((void***)&p->symbols, &p->sym_count, s);
769 s->sym_index = sym_index;
770 return s;
771 }
772
773 /*----------------------------------------------------------------------------*/
774 static void pe_build_imports(struct pe_info *pe)
775 {
776 int thk_ptr, ent_ptr, dll_ptr, sym_cnt, i;
777 DWORD rva_base = pe->thunk->sh_addr - pe->imagebase;
778 int ndlls = pe->imp_count;
779
780 for (sym_cnt = i = 0; i < ndlls; ++i)
781 sym_cnt += pe->imp_info[i]->sym_count;
782
783 if (0 == sym_cnt)
784 return;
785
786 pe_align_section(pe->thunk, 16);
787
788 pe->imp_offs = dll_ptr = pe->thunk->data_offset;
789 pe->imp_size = (ndlls + 1) * sizeof(IMAGE_IMPORT_DESCRIPTOR);
790 pe->iat_offs = dll_ptr + pe->imp_size;
791 pe->iat_size = (sym_cnt + ndlls) * sizeof(ADDR3264);
792 section_ptr_add(pe->thunk, pe->imp_size + 2*pe->iat_size);
793
794 thk_ptr = pe->iat_offs;
795 ent_ptr = pe->iat_offs + pe->iat_size;
796
797 for (i = 0; i < pe->imp_count; ++i) {
798 IMAGE_IMPORT_DESCRIPTOR *hdr;
799 int k, n, dllindex;
800 ADDR3264 v;
801 struct pe_import_info *p = pe->imp_info[i];
802 const char *name;
803 DLLReference *dllref;
804
805 dllindex = p->dll_index;
806 if (dllindex)
807 name = (dllref = pe->s1->loaded_dlls[dllindex-1])->name;
808 else
809 name = "", dllref = NULL;
810
811 /* put the dll name into the import header */
812 v = put_elf_str(pe->thunk, name);
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 v = imp_sym->st_value;
834 if (dllref) {
835 if ( !dllref->handle )
836 dllref->handle = LoadLibrary(dllref->name);
837 v = (ADDR3264)GetProcAddress(dllref->handle, name);
838 }
839 if (!v)
840 tcc_error_noabort("undefined symbol '%s'", name);
841 }
842 #endif
843 } else {
844 v = 0; /* last entry is zero */
845 }
846 *(ADDR3264*)(pe->thunk->data+thk_ptr) =
847 *(ADDR3264*)(pe->thunk->data+ent_ptr) = v;
848 thk_ptr += sizeof (ADDR3264);
849 ent_ptr += sizeof (ADDR3264);
850 }
851 dll_ptr += sizeof(IMAGE_IMPORT_DESCRIPTOR);
852 dynarray_reset(&p->symbols, &p->sym_count);
853 }
854 dynarray_reset(&pe->imp_info, &pe->imp_count);
855 }
856
857 /* ------------------------------------------------------------- */
858
859 struct pe_sort_sym
860 {
861 int index;
862 const char *name;
863 };
864
865 static int sym_cmp(const void *va, const void *vb)
866 {
867 const char *ca = (*(struct pe_sort_sym**)va)->name;
868 const char *cb = (*(struct pe_sort_sym**)vb)->name;
869 return strcmp(ca, cb);
870 }
871
872 static void pe_build_exports(struct pe_info *pe)
873 {
874 ElfW(Sym) *sym;
875 int sym_index, sym_end;
876 DWORD rva_base, func_o, name_o, ord_o, str_o;
877 IMAGE_EXPORT_DIRECTORY *hdr;
878 int sym_count, ord;
879 struct pe_sort_sym **sorted, *p;
880
881 FILE *op;
882 char buf[MAX_PATH];
883 const char *dllname;
884 const char *name;
885
886 rva_base = pe->thunk->sh_addr - pe->imagebase;
887 sym_count = 0, sorted = NULL, op = NULL;
888
889 sym_end = symtab_section->data_offset / sizeof(ElfW(Sym));
890 for (sym_index = 1; sym_index < sym_end; ++sym_index) {
891 sym = (ElfW(Sym)*)symtab_section->data + sym_index;
892 name = pe_export_name(pe->s1, sym);
893 if ((sym->st_other & 1)
894 /* export only symbols from actually written sections */
895 && pe->s1->sections[sym->st_shndx]->sh_addr) {
896 p = tcc_malloc(sizeof *p);
897 p->index = sym_index;
898 p->name = name;
899 dynarray_add((void***)&sorted, &sym_count, p);
900 }
901 #if 0
902 if (sym->st_other & 1)
903 printf("export: %s\n", name);
904 if (sym->st_other & 2)
905 printf("stdcall: %s\n", name);
906 #endif
907 }
908
909 if (0 == sym_count)
910 return;
911
912 qsort (sorted, sym_count, sizeof *sorted, sym_cmp);
913
914 pe_align_section(pe->thunk, 16);
915 dllname = tcc_basename(pe->filename);
916
917 pe->exp_offs = pe->thunk->data_offset;
918 func_o = pe->exp_offs + sizeof(IMAGE_EXPORT_DIRECTORY);
919 name_o = func_o + sym_count * sizeof (DWORD);
920 ord_o = name_o + sym_count * sizeof (DWORD);
921 str_o = ord_o + sym_count * sizeof(WORD);
922
923 hdr = section_ptr_add(pe->thunk, str_o - pe->exp_offs);
924 hdr->Characteristics = 0;
925 hdr->Base = 1;
926 hdr->NumberOfFunctions = sym_count;
927 hdr->NumberOfNames = sym_count;
928 hdr->AddressOfFunctions = func_o + rva_base;
929 hdr->AddressOfNames = name_o + rva_base;
930 hdr->AddressOfNameOrdinals = ord_o + rva_base;
931 hdr->Name = str_o + rva_base;
932 put_elf_str(pe->thunk, dllname);
933
934 #if 1
935 /* automatically write exports to <output-filename>.def */
936 strcpy(buf, pe->filename);
937 strcpy(tcc_fileextension(buf), ".def");
938 op = fopen(buf, "w");
939 if (NULL == op) {
940 tcc_error_noabort("could not create '%s': %s", buf, strerror(errno));
941 } else {
942 fprintf(op, "LIBRARY %s\n\nEXPORTS\n", dllname);
943 if (pe->s1->verbose)
944 printf("<- %s (%d symbols)\n", buf, sym_count);
945 }
946 #endif
947
948 for (ord = 0; ord < sym_count; ++ord)
949 {
950 p = sorted[ord], sym_index = p->index, name = p->name;
951 /* insert actual address later in pe_relocate_rva */
952 put_elf_reloc(symtab_section, pe->thunk,
953 func_o, R_XXX_RELATIVE, sym_index);
954 *(DWORD*)(pe->thunk->data + name_o)
955 = pe->thunk->data_offset + rva_base;
956 *(WORD*)(pe->thunk->data + ord_o)
957 = ord;
958 put_elf_str(pe->thunk, name);
959 func_o += sizeof (DWORD);
960 name_o += sizeof (DWORD);
961 ord_o += sizeof (WORD);
962 if (op)
963 fprintf(op, "%s\n", name);
964 }
965 pe->exp_size = pe->thunk->data_offset - pe->exp_offs;
966 dynarray_reset(&sorted, &sym_count);
967 if (op)
968 fclose(op);
969 }
970
971 /* ------------------------------------------------------------- */
972 static void pe_build_reloc (struct pe_info *pe)
973 {
974 DWORD offset, block_ptr, addr;
975 int count, i;
976 ElfW_Rel *rel, *rel_end;
977 Section *s = NULL, *sr;
978
979 offset = addr = block_ptr = count = i = 0;
980 rel = rel_end = NULL;
981
982 for(;;) {
983 if (rel < rel_end) {
984 int type = ELFW(R_TYPE)(rel->r_info);
985 addr = rel->r_offset + s->sh_addr;
986 ++ rel;
987 if (type != REL_TYPE_DIRECT)
988 continue;
989 if (count == 0) { /* new block */
990 block_ptr = pe->reloc->data_offset;
991 section_ptr_add(pe->reloc, sizeof(struct pe_reloc_header));
992 offset = addr & 0xFFFFFFFF<<12;
993 }
994 if ((addr -= offset) < (1<<12)) { /* one block spans 4k addresses */
995 WORD *wp = section_ptr_add(pe->reloc, sizeof (WORD));
996 *wp = addr | IMAGE_REL_BASED_HIGHLOW<<12;
997 ++count;
998 continue;
999 }
1000 -- rel;
1001
1002 } else if (i < pe->sec_count) {
1003 sr = (s = pe->s1->sections[pe->sec_info[i++].ord])->reloc;
1004 if (sr) {
1005 rel = (ElfW_Rel *)sr->data;
1006 rel_end = (ElfW_Rel *)(sr->data + sr->data_offset);
1007 }
1008 continue;
1009 }
1010
1011 if (count) {
1012 /* store the last block and ready for a new one */
1013 struct pe_reloc_header *hdr;
1014 if (count & 1) /* align for DWORDS */
1015 section_ptr_add(pe->reloc, sizeof(WORD)), ++count;
1016 hdr = (struct pe_reloc_header *)(pe->reloc->data + block_ptr);
1017 hdr -> offset = offset - pe->imagebase;
1018 hdr -> size = count * sizeof(WORD) + sizeof(struct pe_reloc_header);
1019 count = 0;
1020 }
1021
1022 if (rel >= rel_end)
1023 break;
1024 }
1025 }
1026
1027 /* ------------------------------------------------------------- */
1028 static int pe_section_class(Section *s)
1029 {
1030 int type, flags;
1031 const char *name;
1032
1033 type = s->sh_type;
1034 flags = s->sh_flags;
1035 name = s->name;
1036 if (flags & SHF_ALLOC) {
1037 if (type == SHT_PROGBITS) {
1038 if (flags & SHF_EXECINSTR)
1039 return sec_text;
1040 if (flags & SHF_WRITE)
1041 return sec_data;
1042 if (0 == strcmp(name, ".rsrc"))
1043 return sec_rsrc;
1044 if (0 == strcmp(name, ".iedat"))
1045 return sec_idata;
1046 if (0 == strcmp(name, ".pdata"))
1047 return sec_pdata;
1048 return sec_other;
1049 } else if (type == SHT_NOBITS) {
1050 if (flags & SHF_WRITE)
1051 return sec_bss;
1052 }
1053 } else {
1054 if (0 == strcmp(name, ".reloc"))
1055 return sec_reloc;
1056 if (0 == strncmp(name, ".stab", 5)) /* .stab and .stabstr */
1057 return sec_stab;
1058 }
1059 return -1;
1060 }
1061
1062 static int pe_assign_addresses (struct pe_info *pe)
1063 {
1064 int i, k, o, c;
1065 DWORD addr;
1066 int *section_order;
1067 struct section_info *si;
1068 Section *s;
1069
1070 // pe->thunk = new_section(pe->s1, ".iedat", SHT_PROGBITS, SHF_ALLOC);
1071
1072 section_order = tcc_malloc(pe->s1->nb_sections * sizeof (int));
1073 for (o = k = 0 ; k < sec_last; ++k) {
1074 for (i = 1; i < pe->s1->nb_sections; ++i) {
1075 s = pe->s1->sections[i];
1076 if (k == pe_section_class(s)) {
1077 // printf("%s %d\n", s->name, k);
1078 s->sh_addr = pe->imagebase;
1079 section_order[o++] = i;
1080 }
1081 }
1082 }
1083
1084 pe->sec_info = tcc_mallocz(o * sizeof (struct section_info));
1085 addr = pe->imagebase + 1;
1086
1087 for (i = 0; i < o; ++i)
1088 {
1089 k = section_order[i];
1090 s = pe->s1->sections[k];
1091 c = pe_section_class(s);
1092 si = &pe->sec_info[pe->sec_count];
1093
1094 #ifdef PE_MERGE_DATA
1095 if (c == sec_bss && pe->sec_count && si[-1].cls == sec_data) {
1096 /* append .bss to .data */
1097 s->sh_addr = addr = ((addr-1) | (s->sh_addralign-1)) + 1;
1098 addr += s->data_offset;
1099 si[-1].sh_size = addr - si[-1].sh_addr;
1100 continue;
1101 }
1102 #endif
1103 strcpy(si->name, s->name);
1104 si->cls = c;
1105 si->ord = k;
1106 si->sh_addr = s->sh_addr = addr = pe_virtual_align(pe, addr);
1107 si->sh_flags = s->sh_flags;
1108
1109 if (c == sec_data && NULL == pe->thunk)
1110 pe->thunk = s;
1111
1112 if (s == pe->thunk) {
1113 pe_build_imports(pe);
1114 pe_build_exports(pe);
1115 }
1116
1117 if (c == sec_reloc)
1118 pe_build_reloc (pe);
1119
1120 if (s->data_offset)
1121 {
1122 if (s->sh_type != SHT_NOBITS) {
1123 si->data = s->data;
1124 si->data_size = s->data_offset;
1125 }
1126
1127 addr += s->data_offset;
1128 si->sh_size = s->data_offset;
1129 ++pe->sec_count;
1130 }
1131 // printf("%08x %05x %s\n", si->sh_addr, si->sh_size, si->name);
1132 }
1133
1134 #if 0
1135 for (i = 1; i < pe->s1->nb_sections; ++i) {
1136 Section *s = pe->s1->sections[i];
1137 int type = s->sh_type;
1138 int flags = s->sh_flags;
1139 printf("section %-16s %-10s %5x %s,%s,%s\n",
1140 s->name,
1141 type == SHT_PROGBITS ? "progbits" :
1142 type == SHT_NOBITS ? "nobits" :
1143 type == SHT_SYMTAB ? "symtab" :
1144 type == SHT_STRTAB ? "strtab" :
1145 type == SHT_RELX ? "rel" : "???",
1146 s->data_offset,
1147 flags & SHF_ALLOC ? "alloc" : "",
1148 flags & SHF_WRITE ? "write" : "",
1149 flags & SHF_EXECINSTR ? "exec" : ""
1150 );
1151 }
1152 pe->s1->verbose = 2;
1153 #endif
1154
1155 tcc_free(section_order);
1156 return 0;
1157 }
1158
1159 /* ------------------------------------------------------------- */
1160 static void pe_relocate_rva (struct pe_info *pe, Section *s)
1161 {
1162 Section *sr = s->reloc;
1163 ElfW_Rel *rel, *rel_end;
1164 rel_end = (ElfW_Rel *)(sr->data + sr->data_offset);
1165 for(rel = (ElfW_Rel *)sr->data; rel < rel_end; rel++) {
1166 if (ELFW(R_TYPE)(rel->r_info) == R_XXX_RELATIVE) {
1167 int sym_index = ELFW(R_SYM)(rel->r_info);
1168 DWORD addr = s->sh_addr;
1169 if (sym_index) {
1170 ElfW(Sym) *sym = (ElfW(Sym) *)symtab_section->data + sym_index;
1171 addr = sym->st_value;
1172 }
1173 // printf("reloc rva %08x %08x %s\n", (DWORD)rel->r_offset, addr, s->name);
1174 *(DWORD*)(s->data + rel->r_offset) += addr - pe->imagebase;
1175 }
1176 }
1177 }
1178
1179 /*----------------------------------------------------------------------------*/
1180
1181 static int pe_isafunc(int sym_index)
1182 {
1183 Section *sr = text_section->reloc;
1184 ElfW_Rel *rel, *rel_end;
1185 Elf32_Word info = ELF32_R_INFO(sym_index, R_386_PC32);
1186 if (!sr)
1187 return 0;
1188 rel_end = (ElfW_Rel *)(sr->data + sr->data_offset);
1189 for (rel = (ElfW_Rel *)sr->data; rel < rel_end; rel++)
1190 if (rel->r_info == info)
1191 return 1;
1192 return 0;
1193 }
1194
1195 /*----------------------------------------------------------------------------*/
1196 static int pe_check_symbols(struct pe_info *pe)
1197 {
1198 ElfW(Sym) *sym;
1199 int sym_index, sym_end;
1200 int ret = 0;
1201
1202 pe_align_section(text_section, 8);
1203
1204 sym_end = symtab_section->data_offset / sizeof(ElfW(Sym));
1205 for (sym_index = 1; sym_index < sym_end; ++sym_index) {
1206
1207 sym = (ElfW(Sym) *)symtab_section->data + sym_index;
1208 if (sym->st_shndx == SHN_UNDEF) {
1209
1210 const char *name = symtab_section->link->data + sym->st_name;
1211 unsigned type = ELFW(ST_TYPE)(sym->st_info);
1212 int imp_sym = pe_find_import(pe->s1, sym);
1213 struct import_symbol *is;
1214
1215 if (0 == imp_sym)
1216 goto not_found;
1217
1218 if (type == STT_NOTYPE) {
1219 /* symbols from assembler have no type, find out which */
1220 if (pe_isafunc(sym_index))
1221 type = STT_FUNC;
1222 else
1223 type = STT_OBJECT;
1224 }
1225
1226 is = pe_add_import(pe, imp_sym);
1227
1228 if (type == STT_FUNC) {
1229 unsigned long offset = is->thk_offset;
1230 if (offset) {
1231 /* got aliased symbol, like stricmp and _stricmp */
1232
1233 } else {
1234 char buffer[100];
1235 WORD *p;
1236
1237 offset = text_section->data_offset;
1238 /* add the 'jmp IAT[x]' instruction */
1239 #ifdef TCC_TARGET_ARM
1240 p = section_ptr_add(text_section, 8+4); // room for code and address
1241 (*(DWORD*)(p)) = 0xE59FC000; // arm code ldr ip, [pc] ; PC+8+0 = 0001xxxx
1242 (*(DWORD*)(p+2)) = 0xE59CF000; // arm code ldr pc, [ip]
1243 #else
1244 p = section_ptr_add(text_section, 8);
1245 *p = 0x25FF;
1246 #ifdef TCC_TARGET_X86_64
1247 *(DWORD*)(p+1) = (DWORD)-4;
1248 #endif
1249 #endif
1250 /* add a helper symbol, will be patched later in
1251 pe_build_imports */
1252 sprintf(buffer, "IAT.%s", name);
1253 is->iat_index = put_elf_sym(
1254 symtab_section, 0, sizeof(DWORD),
1255 ELFW(ST_INFO)(STB_GLOBAL, STT_OBJECT),
1256 0, SHN_UNDEF, buffer);
1257 #ifdef TCC_TARGET_ARM
1258 put_elf_reloc(symtab_section, text_section,
1259 offset + 8, R_XXX_THUNKFIX, is->iat_index); // offset to IAT position
1260 #else
1261 put_elf_reloc(symtab_section, text_section,
1262 offset + 2, R_XXX_THUNKFIX, is->iat_index);
1263 #endif
1264 is->thk_offset = offset;
1265 }
1266
1267 /* tcc_realloc might have altered sym's address */
1268 sym = (ElfW(Sym) *)symtab_section->data + sym_index;
1269
1270 /* patch the original symbol */
1271 sym->st_value = offset;
1272 sym->st_shndx = text_section->sh_num;
1273 sym->st_other &= ~1; /* do not export */
1274 continue;
1275 }
1276
1277 if (type == STT_OBJECT) { /* data, ptr to that should be */
1278 if (0 == is->iat_index) {
1279 /* original symbol will be patched later in pe_build_imports */
1280 is->iat_index = sym_index;
1281 continue;
1282 }
1283 }
1284
1285 not_found:
1286 tcc_error_noabort("undefined symbol '%s'", name);
1287 ret = -1;
1288
1289 } else if (pe->s1->rdynamic
1290 && ELFW(ST_BIND)(sym->st_info) != STB_LOCAL) {
1291 /* if -rdynamic option, then export all non local symbols */
1292 sym->st_other |= 1;
1293 }
1294 }
1295 return ret;
1296 }
1297
1298 /*----------------------------------------------------------------------------*/
1299 #ifdef PE_PRINT_SECTIONS
1300 static void pe_print_section(FILE * f, Section * s)
1301 {
1302 /* just if you'r curious */
1303 BYTE *p, *e, b;
1304 int i, n, l, m;
1305 p = s->data;
1306 e = s->data + s->data_offset;
1307 l = e - p;
1308
1309 fprintf(f, "section \"%s\"", s->name);
1310 if (s->link)
1311 fprintf(f, "\nlink \"%s\"", s->link->name);
1312 if (s->reloc)
1313 fprintf(f, "\nreloc \"%s\"", s->reloc->name);
1314 fprintf(f, "\nv_addr %08X", (unsigned)s->sh_addr);
1315 fprintf(f, "\ncontents %08X", (unsigned)l);
1316 fprintf(f, "\n\n");
1317
1318 if (s->sh_type == SHT_NOBITS)
1319 return;
1320
1321 if (0 == l)
1322 return;
1323
1324 if (s->sh_type == SHT_SYMTAB)
1325 m = sizeof(ElfW(Sym));
1326 else if (s->sh_type == SHT_RELX)
1327 m = sizeof(ElfW_Rel);
1328 else
1329 m = 16;
1330
1331 fprintf(f, "%-8s", "offset");
1332 for (i = 0; i < m; ++i)
1333 fprintf(f, " %02x", i);
1334 n = 56;
1335
1336 if (s->sh_type == SHT_SYMTAB || s->sh_type == SHT_RELX) {
1337 const char *fields1[] = {
1338 "name",
1339 "value",
1340 "size",
1341 "bind",
1342 "type",
1343 "other",
1344 "shndx",
1345 NULL
1346 };
1347
1348 const char *fields2[] = {
1349 "offs",
1350 "type",
1351 "symb",
1352 NULL
1353 };
1354
1355 const char **p;
1356
1357 if (s->sh_type == SHT_SYMTAB)
1358 p = fields1, n = 106;
1359 else
1360 p = fields2, n = 58;
1361
1362 for (i = 0; p[i]; ++i)
1363 fprintf(f, "%6s", p[i]);
1364 fprintf(f, " symbol");
1365 }
1366
1367 fprintf(f, "\n");
1368 for (i = 0; i < n; ++i)
1369 fprintf(f, "-");
1370 fprintf(f, "\n");
1371
1372 for (i = 0; i < l;)
1373 {
1374 fprintf(f, "%08X", i);
1375 for (n = 0; n < m; ++n) {
1376 if (n + i < l)
1377 fprintf(f, " %02X", p[i + n]);
1378 else
1379 fprintf(f, " ");
1380 }
1381
1382 if (s->sh_type == SHT_SYMTAB) {
1383 ElfW(Sym) *sym = (ElfW(Sym) *) (p + i);
1384 const char *name = s->link->data + sym->st_name;
1385 fprintf(f, " %04X %04X %04X %02X %02X %02X %04X \"%s\"",
1386 (unsigned)sym->st_name,
1387 (unsigned)sym->st_value,
1388 (unsigned)sym->st_size,
1389 (unsigned)ELFW(ST_BIND)(sym->st_info),
1390 (unsigned)ELFW(ST_TYPE)(sym->st_info),
1391 (unsigned)sym->st_other,
1392 (unsigned)sym->st_shndx,
1393 name);
1394
1395 } else if (s->sh_type == SHT_RELX) {
1396 ElfW_Rel *rel = (ElfW_Rel *) (p + i);
1397 ElfW(Sym) *sym =
1398 (ElfW(Sym) *) s->link->data + ELFW(R_SYM)(rel->r_info);
1399 const char *name = s->link->link->data + sym->st_name;
1400 fprintf(f, " %04X %02X %04X \"%s\"",
1401 (unsigned)rel->r_offset,
1402 (unsigned)ELFW(R_TYPE)(rel->r_info),
1403 (unsigned)ELFW(R_SYM)(rel->r_info),
1404 name);
1405 } else {
1406 fprintf(f, " ");
1407 for (n = 0; n < m; ++n) {
1408 if (n + i < l) {
1409 b = p[i + n];
1410 if (b < 32 || b >= 127)
1411 b = '.';
1412 fprintf(f, "%c", b);
1413 }
1414 }
1415 }
1416 i += m;
1417 fprintf(f, "\n");
1418 }
1419 fprintf(f, "\n\n");
1420 }
1421
1422 static void pe_print_sections(TCCState *s1, const char *fname)
1423 {
1424 Section *s;
1425 FILE *f;
1426 int i;
1427 f = fopen(fname, "w");
1428 for (i = 1; i < s1->nb_sections; ++i) {
1429 s = s1->sections[i];
1430 pe_print_section(f, s);
1431 }
1432 pe_print_section(f, s1->dynsymtab_section);
1433 fclose(f);
1434 }
1435 #endif
1436
1437 /* ------------------------------------------------------------- */
1438 /* helper function for load/store to insert one more indirection */
1439
1440 ST_FUNC SValue *pe_getimport(SValue *sv, SValue *v2)
1441 {
1442 Sym *sym;
1443 ElfW(Sym) *esym;
1444 int r2;
1445
1446 if ((sv->r & (VT_VALMASK|VT_SYM)) != (VT_CONST|VT_SYM) || (sv->r2 != VT_CONST))
1447 return sv;
1448 sym = sv->sym;
1449 if ((sym->type.t & (VT_EXTERN|VT_STATIC)) != VT_EXTERN)
1450 return sv;
1451 if (!sym->c)
1452 put_extern_sym(sym, NULL, 0, 0);
1453 esym = &((ElfW(Sym) *)symtab_section->data)[sym->c];
1454 if (!(esym->st_other & 4))
1455 return sv;
1456
1457 // printf("import %04x %04x %04x %s\n", sv->type.t, sym->type.t, sv->r, get_tok_str(sv->sym->v, NULL));
1458
1459 memset(v2, 0, sizeof *v2);
1460 v2->type.t = VT_PTR;
1461 v2->r = VT_CONST | VT_SYM | VT_LVAL;
1462 v2->sym = sv->sym;
1463
1464 r2 = get_reg(RC_INT);
1465 load(r2, v2);
1466 v2->r = r2;
1467
1468 if (sv->c.ui) {
1469 vpushv(v2);
1470 vpushi(sv->c.ui);
1471 gen_opi('+');
1472 *v2 = *vtop--;
1473 }
1474
1475 v2->type.t = sv->type.t;
1476 v2->r |= sv->r & VT_LVAL;
1477 return v2;
1478 }
1479
1480 ST_FUNC int pe_putimport(TCCState *s1, int dllindex, const char *name, const void *value)
1481 {
1482 return add_elf_sym(
1483 s1->dynsymtab_section,
1484 (uplong)value,
1485 dllindex, /* st_size */
1486 ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE),
1487 0,
1488 value ? SHN_ABS : SHN_UNDEF,
1489 name
1490 );
1491 }
1492
1493 static int add_dllref(TCCState *s1, const char *dllname)
1494 {
1495 DLLReference *dllref;
1496 int i;
1497 for (i = 0; i < s1->nb_loaded_dlls; ++i)
1498 if (0 == strcmp(s1->loaded_dlls[i]->name, dllname))
1499 return i + 1;
1500 dllref = tcc_mallocz(sizeof(DLLReference) + strlen(dllname));
1501 strcpy(dllref->name, dllname);
1502 dynarray_add((void ***) &s1->loaded_dlls, &s1->nb_loaded_dlls, dllref);
1503 return s1->nb_loaded_dlls;
1504 }
1505
1506 /* ------------------------------------------------------------- */
1507
1508 static int read_mem(FILE *fp, unsigned offset, void *buffer, unsigned len)
1509 {
1510 fseek(fp, offset, 0);
1511 return len == fread(buffer, 1, len, fp);
1512 }
1513
1514 /* -------------------------------------------------------------
1515 * This is for compiled windows resources in 'coff' format
1516 * as generated by 'windres.exe -O coff ...'.
1517 */
1518
1519 static int pe_load_res(TCCState *s1, FILE *fp)
1520 {
1521 struct pe_rsrc_header hdr;
1522 Section *rsrc_section;
1523 int i, ret = -1;
1524 BYTE *ptr;
1525 unsigned offs;
1526
1527 if (!read_mem(fp, 0, &hdr, sizeof hdr))
1528 goto quit;
1529
1530 if (hdr.filehdr.Machine != 0x014C
1531 || hdr.filehdr.NumberOfSections != 1
1532 || strcmp(hdr.sectionhdr.Name, ".rsrc") != 0)
1533 goto quit;
1534
1535 rsrc_section = new_section(s1, ".rsrc", SHT_PROGBITS, SHF_ALLOC);
1536 ptr = section_ptr_add(rsrc_section, hdr.sectionhdr.SizeOfRawData);
1537 offs = hdr.sectionhdr.PointerToRawData;
1538 if (!read_mem(fp, offs, ptr, hdr.sectionhdr.SizeOfRawData))
1539 goto quit;
1540 offs = hdr.sectionhdr.PointerToRelocations;
1541 for (i = 0; i < hdr.sectionhdr.NumberOfRelocations; ++i)
1542 {
1543 struct pe_rsrc_reloc rel;
1544 if (!read_mem(fp, offs, &rel, sizeof rel))
1545 goto quit;
1546 // printf("rsrc_reloc: %x %x %x\n", rel.offset, rel.size, rel.type);
1547 if (rel.type != 7) /* DIR32NB */
1548 goto quit;
1549 put_elf_reloc(symtab_section, rsrc_section,
1550 rel.offset, R_XXX_RELATIVE, 0);
1551 offs += sizeof rel;
1552 }
1553 ret = 0;
1554 quit:
1555 return ret;
1556 }
1557
1558 /* ------------------------------------------------------------- */
1559 static char *trimfront(char *p)
1560 {
1561 while (*p && (unsigned char)*p <= ' ')
1562 ++p;
1563 return p;
1564 }
1565
1566 static char *trimback(char *a, char *e)
1567 {
1568 while (e > a && (unsigned char)e[-1] <= ' ')
1569 --e;
1570 *e = 0;;
1571 return a;
1572 }
1573
1574 static char *get_line(char *line, int size, FILE *fp)
1575 {
1576 if (NULL == fgets(line, size, fp))
1577 return NULL;
1578 trimback(line, strchr(line, 0));
1579 return trimfront(line);
1580 }
1581
1582 /* ------------------------------------------------------------- */
1583 static int pe_load_def(TCCState *s1, FILE *fp)
1584 {
1585 int state = 0, ret = -1, dllindex = 0;
1586 char line[400], dllname[80], *p;
1587
1588 for (;;) {
1589 p = get_line(line, sizeof line, fp);
1590 if (NULL == p)
1591 break;
1592 if (0 == *p || ';' == *p)
1593 continue;
1594 switch (state) {
1595 case 0:
1596 if (0 != strnicmp(p, "LIBRARY", 7))
1597 goto quit;
1598 strcpy(dllname, trimfront(p+7));
1599 ++state;
1600 continue;
1601
1602 case 1:
1603 if (0 != stricmp(p, "EXPORTS"))
1604 goto quit;
1605 ++state;
1606 continue;
1607
1608 case 2:
1609 dllindex = add_dllref(s1, dllname);
1610 ++state;
1611
1612 default:
1613 pe_putimport(s1, dllindex, p, NULL);
1614 continue;
1615 }
1616 }
1617 ret = 0;
1618 quit:
1619 return ret;
1620 }
1621
1622 /* ------------------------------------------------------------- */
1623 #define TINY_IMPDEF_GET_EXPORT_NAMES_ONLY
1624 #include "win32/tools/tiny_impdef.c"
1625
1626 static int pe_load_dll(TCCState *s1, const char *dllname, FILE *fp)
1627 {
1628 char *p, *q;
1629 int index;
1630 p = get_export_names(fp);
1631 if (!p)
1632 return -1;
1633 index = add_dllref(s1, dllname);
1634 for (q = p; *q; q += 1 + strlen(q))
1635 pe_putimport(s1, index, q, NULL);
1636 tcc_free(p);
1637 return 0;
1638 }
1639
1640 /* ------------------------------------------------------------- */
1641 ST_FUNC int pe_load_file(struct TCCState *s1, const char *filename, int fd)
1642 {
1643 FILE *fp = fdopen(dup(fd), "rb");
1644 int ret = -1;
1645 char buf[10];
1646 if (fp) {
1647 if (0 == strcmp(tcc_fileextension(filename), ".def"))
1648 ret = pe_load_def(s1, fp);
1649 else if (pe_load_res(s1, fp) == 0)
1650 ret = 0;
1651 else if (read_mem(fp, 0, buf, sizeof buf) && 0 == strncmp(buf, "MZ", 2))
1652 ret = pe_load_dll(s1, tcc_basename(filename), fp);
1653 fclose(fp);
1654 }
1655 return ret;
1656 }
1657
1658 /* ------------------------------------------------------------- */
1659 #ifdef TCC_TARGET_X86_64
1660 static unsigned pe_add_uwwind_info(TCCState *s1)
1661 {
1662 if (NULL == s1->uw_pdata) {
1663 s1->uw_pdata = find_section(tcc_state, ".pdata");
1664 s1->uw_pdata->sh_addralign = 4;
1665 s1->uw_sym = put_elf_sym(symtab_section, 0, 0, 0, 0, text_section->sh_num, NULL);
1666 }
1667
1668 if (0 == s1->uw_offs) {
1669 /* As our functions all have the same stackframe, we use one entry for all */
1670 static const unsigned char uw_info[] = {
1671 0x01, // UBYTE: 3 Version , UBYTE: 5 Flags
1672 0x04, // UBYTE Size of prolog
1673 0x02, // UBYTE Count of unwind codes
1674 0x05, // UBYTE: 4 Frame Register (rbp), UBYTE: 4 Frame Register offset (scaled)
1675 // USHORT * n Unwind codes array
1676 // 0x0b, 0x01, 0xff, 0xff, // stack size
1677 0x04, 0x03, // set frame ptr (mov rsp -> rbp)
1678 0x01, 0x50 // push reg (rbp)
1679 };
1680
1681 Section *s = text_section;
1682 unsigned char *p;
1683
1684 section_ptr_add(s, -s->data_offset & 3); /* align */
1685 s1->uw_offs = s->data_offset;
1686 p = section_ptr_add(s, sizeof uw_info);
1687 memcpy(p, uw_info, sizeof uw_info);
1688 }
1689
1690 return s1->uw_offs;
1691 }
1692
1693 ST_FUNC void pe_add_unwind_data(unsigned start, unsigned end, unsigned stack)
1694 {
1695 TCCState *s1 = tcc_state;
1696 Section *pd;
1697 unsigned o, n, d;
1698 struct /* _RUNTIME_FUNCTION */ {
1699 DWORD BeginAddress;
1700 DWORD EndAddress;
1701 DWORD UnwindData;
1702 } *p;
1703
1704 d = pe_add_uwwind_info(s1);
1705 pd = s1->uw_pdata;
1706 o = pd->data_offset;
1707 p = section_ptr_add(pd, sizeof *p);
1708
1709 /* record this function */
1710 p->BeginAddress = start;
1711 p->EndAddress = end;
1712 p->UnwindData = d;
1713
1714 /* put relocations on it */
1715 for (n = o + sizeof *p; o < n; o += sizeof p->BeginAddress)
1716 put_elf_reloc(symtab_section, pd, o, R_X86_64_RELATIVE, s1->uw_sym);
1717 }
1718 #endif
1719 /* ------------------------------------------------------------- */
1720 #ifdef TCC_TARGET_X86_64
1721 #define PE_STDSYM(n,s) n
1722 #else
1723 #define PE_STDSYM(n,s) "_" n s
1724 #endif
1725
1726 static void pe_add_runtime_ex(TCCState *s1, struct pe_info *pe)
1727 {
1728 const char *start_symbol;
1729 unsigned long addr = 0;
1730 int pe_type = 0;
1731
1732 if (find_elf_sym(symtab_section, PE_STDSYM("WinMain","@16")))
1733 pe_type = PE_GUI;
1734 else
1735 if (TCC_OUTPUT_DLL == s1->output_type) {
1736 pe_type = PE_DLL;
1737 /* need this for 'tccelf.c:relocate_section()' */
1738 s1->output_type = TCC_OUTPUT_EXE;
1739 }
1740 else
1741 pe_type = PE_EXE;
1742
1743 start_symbol =
1744 TCC_OUTPUT_MEMORY == s1->output_type
1745 ? PE_GUI == pe_type ? "__runwinmain" : "_main"
1746 : PE_DLL == pe_type ? PE_STDSYM("__dllstart","@12")
1747 : PE_GUI == pe_type ? "__winstart" : "__start"
1748 ;
1749
1750 if (!s1->leading_underscore || strchr(start_symbol, '@')) {
1751 ++start_symbol;
1752 if (start_symbol[0] != '_')
1753 start_symbol = NULL;
1754 }
1755
1756 /* grab the startup code from libtcc1 */
1757 if (start_symbol)
1758 add_elf_sym(symtab_section,
1759 0, 0,
1760 ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
1761 SHN_UNDEF, start_symbol);
1762
1763 if (0 == s1->nostdlib) {
1764 static const char *libs[] = {
1765 "tcc1", "msvcrt", "kernel32", "user32", "gdi32", NULL
1766 };
1767 const char **pp, *p;
1768 for (pp = libs; 0 != (p = *pp); ++pp) {
1769 if (0 == *p) {
1770 if (PE_DLL != pe_type && PE_GUI != pe_type)
1771 break;
1772 } else if (tcc_add_library(s1, p) < 0)
1773 tcc_error_noabort("cannot find library: %s", p);
1774 }
1775 }
1776
1777 if (TCC_OUTPUT_MEMORY == s1->output_type)
1778 pe_type = PE_RUN;
1779
1780 if (start_symbol) {
1781 addr = (uplong)tcc_get_symbol_err(s1, start_symbol);
1782 if (PE_RUN == pe_type && addr)
1783 /* for -run GUI's, put '_runwinmain' instead of 'main' */
1784 add_elf_sym(symtab_section,
1785 addr, 0,
1786 ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
1787 text_section->sh_num, "main");
1788 }
1789
1790 pe->type = pe_type;
1791 pe->start_addr = addr;
1792 }
1793
1794 ST_FUNC int pe_output_file(TCCState * s1, const char *filename)
1795 {
1796 int ret;
1797 struct pe_info pe;
1798 int i;
1799
1800 memset(&pe, 0, sizeof pe);
1801 pe.filename = filename;
1802 pe.s1 = s1;
1803
1804 tcc_add_bcheck(s1);
1805 pe_add_runtime_ex(s1, &pe);
1806 relocate_common_syms(); /* assign bss adresses */
1807 tcc_add_linker_symbols(s1);
1808
1809 ret = pe_check_symbols(&pe);
1810 if (ret)
1811 ;
1812 else if (filename) {
1813 if (PE_DLL == pe.type) {
1814 pe.reloc = new_section(pe.s1, ".reloc", SHT_PROGBITS, 0);
1815 /* XXX: check if is correct for arm-pe target */
1816 pe.imagebase = 0x10000000;
1817 } else {
1818 #if defined(TCC_TARGET_ARM)
1819 pe.imagebase = 0x00010000;
1820 #else
1821 pe.imagebase = 0x00400000;
1822 #endif
1823 }
1824
1825 /* if no subsystem specified, we use "console" subsystem by default */
1826 if (s1->pe_subsystem != 0)
1827 pe.subsystem = s1->pe_subsystem;
1828 else
1829 #if defined(TCC_TARGET_ARM)
1830 pe.subsystem = 9;
1831 #else
1832 pe.subsystem = 3;
1833 #endif
1834 /* set default file/section alignment */
1835 if (pe.subsystem == 1) {
1836 pe.section_align = 0x20;
1837 pe.file_align = 0x20;
1838 } else {
1839 pe.section_align = 0x1000;
1840 pe.file_align = 0x200;
1841 }
1842
1843 if (s1->section_align != 0)
1844 pe.section_align = s1->section_align;
1845 if (s1->pe_file_align != 0)
1846 pe.file_align = s1->pe_file_align;
1847
1848 if ((pe.subsystem >= 10) && (pe.subsystem <= 12))
1849 pe.imagebase = 0;
1850
1851 if (s1->has_text_addr)
1852 pe.imagebase = s1->text_addr;
1853
1854 pe_assign_addresses(&pe);
1855 relocate_syms(s1, 0);
1856 for (i = 1; i < s1->nb_sections; ++i) {
1857 Section *s = s1->sections[i];
1858 if (s->reloc) {
1859 relocate_section(s1, s);
1860 pe_relocate_rva(&pe, s);
1861 }
1862 }
1863 if (s1->nb_errors)
1864 ret = -1;
1865 else
1866 ret = pe_write(&pe);
1867 tcc_free(pe.sec_info);
1868 } else {
1869 #ifdef TCC_IS_NATIVE
1870 pe.thunk = data_section;
1871 pe_build_imports(&pe);
1872 #endif
1873 }
1874
1875 #ifdef PE_PRINT_SECTIONS
1876 pe_print_sections(s1, "tcc.log");
1877 #endif
1878 return ret;
1879 }
1880
1881 /* ------------------------------------------------------------- */
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