Rein in unintended external functions on Windows.
[tinycc.git] / tccpe.c
blob4069e514821e5315afe8123c72b044192b409619
1 /*
2 * TCCPE.C - PE file output for the Tiny C Compiler
4 * Copyright (c) 2005-2007 grischka
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.
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.
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
21 #include "tcc.h"
23 #ifndef _WIN32
24 #define stricmp strcasecmp
25 #define strnicmp strncasecmp
26 #endif
28 #ifndef MAX_PATH
29 #define MAX_PATH 260
30 #endif
32 #define PE_MERGE_DATA
33 /* #define PE_PRINT_SECTIONS */
35 #ifdef TCC_TARGET_X86_64
36 # define ADDR3264 ULONGLONG
37 # define REL_TYPE_DIRECT R_X86_64_64
38 # define R_XXX_THUNKFIX R_X86_64_PC32
39 # define R_XXX_RELATIVE R_X86_64_RELATIVE
40 # define IMAGE_FILE_MACHINE 0x8664
41 # define RSRC_RELTYPE 3
43 #elif defined TCC_TARGET_ARM
44 # define ADDR3264 DWORD
45 # define REL_TYPE_DIRECT R_ARM_ABS32
46 # define R_XXX_THUNKFIX R_ARM_ABS32
47 # define R_XXX_RELATIVE R_ARM_RELATIVE
48 # define IMAGE_FILE_MACHINE 0x01C0
49 # define RSRC_RELTYPE 7 /* ??? (not tested) */
51 #elif defined TCC_TARGET_I386
52 # define ADDR3264 DWORD
53 # define REL_TYPE_DIRECT R_386_32
54 # define R_XXX_THUNKFIX R_386_32
55 # define R_XXX_RELATIVE R_386_RELATIVE
56 # define IMAGE_FILE_MACHINE 0x014C
57 # define RSRC_RELTYPE 7 /* DIR32NB */
59 #endif
61 #if 0
62 #ifdef _WIN32
63 void dbg_printf (const char *fmt, ...)
65 char buffer[4000];
66 va_list arg;
67 int x;
68 va_start(arg, fmt);
69 x = vsprintf (buffer, fmt, arg);
70 strcpy(buffer+x, "\n");
71 OutputDebugString(buffer);
73 #endif
74 #endif
76 /* ----------------------------------------------------------- */
77 #ifndef IMAGE_NT_SIGNATURE
78 /* ----------------------------------------------------------- */
79 /* definitions below are from winnt.h */
81 typedef unsigned char BYTE;
82 typedef unsigned short WORD;
83 typedef unsigned int DWORD;
84 typedef unsigned long long ULONGLONG;
85 #pragma pack(push, 1)
87 typedef struct _IMAGE_DOS_HEADER { /* DOS .EXE header */
88 WORD e_magic; /* Magic number */
89 WORD e_cblp; /* Bytes on last page of file */
90 WORD e_cp; /* Pages in file */
91 WORD e_crlc; /* Relocations */
92 WORD e_cparhdr; /* Size of header in paragraphs */
93 WORD e_minalloc; /* Minimum extra paragraphs needed */
94 WORD e_maxalloc; /* Maximum extra paragraphs needed */
95 WORD e_ss; /* Initial (relative) SS value */
96 WORD e_sp; /* Initial SP value */
97 WORD e_csum; /* Checksum */
98 WORD e_ip; /* Initial IP value */
99 WORD e_cs; /* Initial (relative) CS value */
100 WORD e_lfarlc; /* File address of relocation table */
101 WORD e_ovno; /* Overlay number */
102 WORD e_res[4]; /* Reserved words */
103 WORD e_oemid; /* OEM identifier (for e_oeminfo) */
104 WORD e_oeminfo; /* OEM information; e_oemid specific */
105 WORD e_res2[10]; /* Reserved words */
106 DWORD e_lfanew; /* File address of new exe header */
107 } IMAGE_DOS_HEADER, *PIMAGE_DOS_HEADER;
109 #define IMAGE_NT_SIGNATURE 0x00004550 /* PE00 */
110 #define SIZE_OF_NT_SIGNATURE 4
112 typedef struct _IMAGE_FILE_HEADER {
113 WORD Machine;
114 WORD NumberOfSections;
115 DWORD TimeDateStamp;
116 DWORD PointerToSymbolTable;
117 DWORD NumberOfSymbols;
118 WORD SizeOfOptionalHeader;
119 WORD Characteristics;
120 } IMAGE_FILE_HEADER, *PIMAGE_FILE_HEADER;
123 #define IMAGE_SIZEOF_FILE_HEADER 20
125 typedef struct _IMAGE_DATA_DIRECTORY {
126 DWORD VirtualAddress;
127 DWORD Size;
128 } IMAGE_DATA_DIRECTORY, *PIMAGE_DATA_DIRECTORY;
131 typedef struct _IMAGE_OPTIONAL_HEADER {
132 /* Standard fields. */
133 WORD Magic;
134 BYTE MajorLinkerVersion;
135 BYTE MinorLinkerVersion;
136 DWORD SizeOfCode;
137 DWORD SizeOfInitializedData;
138 DWORD SizeOfUninitializedData;
139 DWORD AddressOfEntryPoint;
140 DWORD BaseOfCode;
141 #ifndef TCC_TARGET_X86_64
142 DWORD BaseOfData;
143 #endif
144 /* NT additional fields. */
145 ADDR3264 ImageBase;
146 DWORD SectionAlignment;
147 DWORD FileAlignment;
148 WORD MajorOperatingSystemVersion;
149 WORD MinorOperatingSystemVersion;
150 WORD MajorImageVersion;
151 WORD MinorImageVersion;
152 WORD MajorSubsystemVersion;
153 WORD MinorSubsystemVersion;
154 DWORD Win32VersionValue;
155 DWORD SizeOfImage;
156 DWORD SizeOfHeaders;
157 DWORD CheckSum;
158 WORD Subsystem;
159 WORD DllCharacteristics;
160 ADDR3264 SizeOfStackReserve;
161 ADDR3264 SizeOfStackCommit;
162 ADDR3264 SizeOfHeapReserve;
163 ADDR3264 SizeOfHeapCommit;
164 DWORD LoaderFlags;
165 DWORD NumberOfRvaAndSizes;
166 IMAGE_DATA_DIRECTORY DataDirectory[16];
167 } IMAGE_OPTIONAL_HEADER32, IMAGE_OPTIONAL_HEADER64, IMAGE_OPTIONAL_HEADER;
169 #define IMAGE_DIRECTORY_ENTRY_EXPORT 0 /* Export Directory */
170 #define IMAGE_DIRECTORY_ENTRY_IMPORT 1 /* Import Directory */
171 #define IMAGE_DIRECTORY_ENTRY_RESOURCE 2 /* Resource Directory */
172 #define IMAGE_DIRECTORY_ENTRY_EXCEPTION 3 /* Exception Directory */
173 #define IMAGE_DIRECTORY_ENTRY_SECURITY 4 /* Security Directory */
174 #define IMAGE_DIRECTORY_ENTRY_BASERELOC 5 /* Base Relocation Table */
175 #define IMAGE_DIRECTORY_ENTRY_DEBUG 6 /* Debug Directory */
176 /* IMAGE_DIRECTORY_ENTRY_COPYRIGHT 7 (X86 usage) */
177 #define IMAGE_DIRECTORY_ENTRY_ARCHITECTURE 7 /* Architecture Specific Data */
178 #define IMAGE_DIRECTORY_ENTRY_GLOBALPTR 8 /* RVA of GP */
179 #define IMAGE_DIRECTORY_ENTRY_TLS 9 /* TLS Directory */
180 #define IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG 10 /* Load Configuration Directory */
181 #define IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT 11 /* Bound Import Directory in headers */
182 #define IMAGE_DIRECTORY_ENTRY_IAT 12 /* Import Address Table */
183 #define IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT 13 /* Delay Load Import Descriptors */
184 #define IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR 14 /* COM Runtime descriptor */
186 /* Section header format. */
187 #define IMAGE_SIZEOF_SHORT_NAME 8
189 typedef struct _IMAGE_SECTION_HEADER {
190 BYTE Name[IMAGE_SIZEOF_SHORT_NAME];
191 union {
192 DWORD PhysicalAddress;
193 DWORD VirtualSize;
194 } Misc;
195 DWORD VirtualAddress;
196 DWORD SizeOfRawData;
197 DWORD PointerToRawData;
198 DWORD PointerToRelocations;
199 DWORD PointerToLinenumbers;
200 WORD NumberOfRelocations;
201 WORD NumberOfLinenumbers;
202 DWORD Characteristics;
203 } IMAGE_SECTION_HEADER, *PIMAGE_SECTION_HEADER;
205 #define IMAGE_SIZEOF_SECTION_HEADER 40
207 typedef struct _IMAGE_EXPORT_DIRECTORY {
208 DWORD Characteristics;
209 DWORD TimeDateStamp;
210 WORD MajorVersion;
211 WORD MinorVersion;
212 DWORD Name;
213 DWORD Base;
214 DWORD NumberOfFunctions;
215 DWORD NumberOfNames;
216 DWORD AddressOfFunctions;
217 DWORD AddressOfNames;
218 DWORD AddressOfNameOrdinals;
219 } IMAGE_EXPORT_DIRECTORY,*PIMAGE_EXPORT_DIRECTORY;
221 typedef struct _IMAGE_IMPORT_DESCRIPTOR {
222 union {
223 DWORD Characteristics;
224 DWORD OriginalFirstThunk;
226 DWORD TimeDateStamp;
227 DWORD ForwarderChain;
228 DWORD Name;
229 DWORD FirstThunk;
230 } IMAGE_IMPORT_DESCRIPTOR;
232 typedef struct _IMAGE_BASE_RELOCATION {
233 DWORD VirtualAddress;
234 DWORD SizeOfBlock;
235 // WORD TypeOffset[1];
236 } IMAGE_BASE_RELOCATION;
238 #define IMAGE_SIZEOF_BASE_RELOCATION 8
240 #define IMAGE_REL_BASED_ABSOLUTE 0
241 #define IMAGE_REL_BASED_HIGH 1
242 #define IMAGE_REL_BASED_LOW 2
243 #define IMAGE_REL_BASED_HIGHLOW 3
244 #define IMAGE_REL_BASED_HIGHADJ 4
245 #define IMAGE_REL_BASED_MIPS_JMPADDR 5
246 #define IMAGE_REL_BASED_SECTION 6
247 #define IMAGE_REL_BASED_REL32 7
249 #pragma pack(pop)
251 /* ----------------------------------------------------------- */
252 #endif /* ndef IMAGE_NT_SIGNATURE */
253 /* ----------------------------------------------------------- */
254 #pragma pack(push, 1)
256 struct pe_header
258 IMAGE_DOS_HEADER doshdr;
259 BYTE dosstub[0x40];
260 DWORD nt_sig;
261 IMAGE_FILE_HEADER filehdr;
262 #ifdef TCC_TARGET_X86_64
263 IMAGE_OPTIONAL_HEADER64 opthdr;
264 #else
265 #ifdef _WIN64
266 IMAGE_OPTIONAL_HEADER32 opthdr;
267 #else
268 IMAGE_OPTIONAL_HEADER opthdr;
269 #endif
270 #endif
273 struct pe_reloc_header {
274 DWORD offset;
275 DWORD size;
278 struct pe_rsrc_header {
279 struct _IMAGE_FILE_HEADER filehdr;
280 struct _IMAGE_SECTION_HEADER sectionhdr;
283 struct pe_rsrc_reloc {
284 DWORD offset;
285 DWORD size;
286 WORD type;
289 #pragma pack(pop)
291 /* ------------------------------------------------------------- */
292 /* internal temporary structures */
295 #define IMAGE_SCN_CNT_CODE 0x00000020
296 #define IMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040
297 #define IMAGE_SCN_CNT_UNINITIALIZED_DATA 0x00000080
298 #define IMAGE_SCN_MEM_DISCARDABLE 0x02000000
299 #define IMAGE_SCN_MEM_SHARED 0x10000000
300 #define IMAGE_SCN_MEM_EXECUTE 0x20000000
301 #define IMAGE_SCN_MEM_READ 0x40000000
302 #define IMAGE_SCN_MEM_WRITE 0x80000000
305 enum {
306 sec_text = 0,
307 sec_data ,
308 sec_bss ,
309 sec_idata ,
310 sec_pdata ,
311 sec_other ,
312 sec_rsrc ,
313 sec_stab ,
314 sec_reloc ,
315 sec_last
318 static const DWORD pe_sec_flags[] = {
319 0x60000020, /* ".text" , */
320 0xC0000040, /* ".data" , */
321 0xC0000080, /* ".bss" , */
322 0x40000040, /* ".idata" , */
323 0x40000040, /* ".pdata" , */
324 0xE0000060, /* < other > , */
325 0x40000040, /* ".rsrc" , */
326 0x42000802, /* ".stab" , */
327 0x42000040, /* ".reloc" , */
330 struct section_info {
331 int cls, ord;
332 char name[32];
333 DWORD sh_addr;
334 DWORD sh_size;
335 DWORD sh_flags;
336 unsigned char *data;
337 DWORD data_size;
338 IMAGE_SECTION_HEADER ish;
341 struct import_symbol {
342 int sym_index;
343 int iat_index;
344 int thk_offset;
347 struct pe_import_info {
348 int dll_index;
349 int sym_count;
350 struct import_symbol **symbols;
353 struct pe_info {
354 TCCState *s1;
355 Section *reloc;
356 Section *thunk;
357 const char *filename;
358 int type;
359 DWORD sizeofheaders;
360 ADDR3264 imagebase;
361 DWORD start_addr;
362 DWORD imp_offs;
363 DWORD imp_size;
364 DWORD iat_offs;
365 DWORD iat_size;
366 DWORD exp_offs;
367 DWORD exp_size;
368 int subsystem;
369 DWORD section_align;
370 DWORD file_align;
371 struct section_info *sec_info;
372 int sec_count;
373 struct pe_import_info **imp_info;
374 int imp_count;
377 #define PE_NUL 0
378 #define PE_DLL 1
379 #define PE_GUI 2
380 #define PE_EXE 3
381 #define PE_RUN 4
383 /* --------------------------------------------*/
385 static const char *pe_export_name(TCCState *s1, ElfW(Sym) *sym)
387 const char *name = symtab_section->link->data + sym->st_name;
388 if (s1->leading_underscore && name[0] == '_' && !(sym->st_other & ST_PE_STDCALL))
389 return name + 1;
390 return name;
393 static int pe_find_import(TCCState * s1, ElfW(Sym) *sym)
395 char buffer[200];
396 const char *s, *p;
397 int sym_index = 0, n = 0;
399 do {
400 s = pe_export_name(s1, sym);
401 if (n) {
402 /* second try: */
403 if (sym->st_other & ST_PE_STDCALL) {
404 /* try w/0 stdcall deco (windows API convention) */
405 p = strrchr(s, '@');
406 if (!p || s[0] != '_')
407 break;
408 strcpy(buffer, s+1)[p-s-1] = 0;
409 } else if (s[0] != '_') { /* try non-ansi function */
410 buffer[0] = '_', strcpy(buffer + 1, s);
411 } else if (0 == memcmp(s, "__imp__", 7)) { /* mingw 2.0 */
412 strcpy(buffer, s + 6);
413 } else if (0 == memcmp(s, "_imp___", 7)) { /* mingw 3.7 */
414 strcpy(buffer, s + 6);
415 } else {
416 break;
418 s = buffer;
420 sym_index = find_elf_sym(s1->dynsymtab_section, s);
421 // printf("find (%d) %d %s\n", n, sym_index, s);
422 } while (0 == sym_index && ++n < 2);
423 return sym_index;
426 /*----------------------------------------------------------------------------*/
428 static int dynarray_assoc(void **pp, int n, int key)
430 int i;
431 for (i = 0; i < n; ++i, ++pp)
432 if (key == **(int **) pp)
433 return i;
434 return -1;
437 #if 0
438 ST_FN DWORD umin(DWORD a, DWORD b)
440 return a < b ? a : b;
442 #endif
444 static DWORD umax(DWORD a, DWORD b)
446 return a < b ? b : a;
449 static DWORD pe_file_align(struct pe_info *pe, DWORD n)
451 return (n + (pe->file_align - 1)) & ~(pe->file_align - 1);
454 static DWORD pe_virtual_align(struct pe_info *pe, DWORD n)
456 return (n + (pe->section_align - 1)) & ~(pe->section_align - 1);
459 static void pe_align_section(Section *s, int a)
461 int i = s->data_offset & (a-1);
462 if (i)
463 section_ptr_add(s, a - i);
466 static void pe_set_datadir(struct pe_header *hdr, int dir, DWORD addr, DWORD size)
468 hdr->opthdr.DataDirectory[dir].VirtualAddress = addr;
469 hdr->opthdr.DataDirectory[dir].Size = size;
472 static int pe_fwrite(void *data, unsigned len, FILE *fp, DWORD *psum)
474 if (psum) {
475 DWORD sum = *psum;
476 WORD *p = data;
477 int i;
478 for (i = len; i > 0; i -= 2) {
479 sum += (i >= 2) ? *p++ : *(BYTE*)p;
480 sum = (sum + (sum >> 16)) & 0xFFFF;
482 *psum = sum;
484 return len == fwrite(data, 1, len, fp) ? 0 : -1;
487 static void pe_fpad(FILE *fp, DWORD new_pos)
489 DWORD pos = ftell(fp);
490 while (++pos <= new_pos)
491 fputc(0, fp);
494 /*----------------------------------------------------------------------------*/
495 static int pe_write(struct pe_info *pe)
497 static const struct pe_header pe_template = {
499 /* IMAGE_DOS_HEADER doshdr */
500 0x5A4D, /*WORD e_magic; Magic number */
501 0x0090, /*WORD e_cblp; Bytes on last page of file */
502 0x0003, /*WORD e_cp; Pages in file */
503 0x0000, /*WORD e_crlc; Relocations */
505 0x0004, /*WORD e_cparhdr; Size of header in paragraphs */
506 0x0000, /*WORD e_minalloc; Minimum extra paragraphs needed */
507 0xFFFF, /*WORD e_maxalloc; Maximum extra paragraphs needed */
508 0x0000, /*WORD e_ss; Initial (relative) SS value */
510 0x00B8, /*WORD e_sp; Initial SP value */
511 0x0000, /*WORD e_csum; Checksum */
512 0x0000, /*WORD e_ip; Initial IP value */
513 0x0000, /*WORD e_cs; Initial (relative) CS value */
514 0x0040, /*WORD e_lfarlc; File address of relocation table */
515 0x0000, /*WORD e_ovno; Overlay number */
516 {0,0,0,0}, /*WORD e_res[4]; Reserved words */
517 0x0000, /*WORD e_oemid; OEM identifier (for e_oeminfo) */
518 0x0000, /*WORD e_oeminfo; OEM information; e_oemid specific */
519 {0,0,0,0,0,0,0,0,0,0}, /*WORD e_res2[10]; Reserved words */
520 0x00000080 /*DWORD e_lfanew; File address of new exe header */
522 /* BYTE dosstub[0x40] */
523 /* 14 code bytes + "This program cannot be run in DOS mode.\r\r\n$" + 6 * 0x00 */
524 0x0e,0x1f,0xba,0x0e,0x00,0xb4,0x09,0xcd,0x21,0xb8,0x01,0x4c,0xcd,0x21,0x54,0x68,
525 0x69,0x73,0x20,0x70,0x72,0x6f,0x67,0x72,0x61,0x6d,0x20,0x63,0x61,0x6e,0x6e,0x6f,
526 0x74,0x20,0x62,0x65,0x20,0x72,0x75,0x6e,0x20,0x69,0x6e,0x20,0x44,0x4f,0x53,0x20,
527 0x6d,0x6f,0x64,0x65,0x2e,0x0d,0x0d,0x0a,0x24,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
529 0x00004550, /* DWORD nt_sig = IMAGE_NT_SIGNATURE */
531 /* IMAGE_FILE_HEADER filehdr */
532 IMAGE_FILE_MACHINE, /*WORD Machine; */
533 0x0003, /*WORD NumberOfSections; */
534 0x00000000, /*DWORD TimeDateStamp; */
535 0x00000000, /*DWORD PointerToSymbolTable; */
536 0x00000000, /*DWORD NumberOfSymbols; */
537 #if defined(TCC_TARGET_X86_64)
538 0x00F0, /*WORD SizeOfOptionalHeader; */
539 0x022F /*WORD Characteristics; */
540 #define CHARACTERISTICS_DLL 0x222E
541 #elif defined(TCC_TARGET_I386)
542 0x00E0, /*WORD SizeOfOptionalHeader; */
543 0x030F /*WORD Characteristics; */
544 #define CHARACTERISTICS_DLL 0x230E
545 #elif defined(TCC_TARGET_ARM)
546 0x00E0, /*WORD SizeOfOptionalHeader; */
547 0x010F, /*WORD Characteristics; */
548 #define CHARACTERISTICS_DLL 0x230F
549 #endif
551 /* IMAGE_OPTIONAL_HEADER opthdr */
552 /* Standard fields. */
553 #ifdef TCC_TARGET_X86_64
554 0x020B, /*WORD Magic; */
555 #else
556 0x010B, /*WORD Magic; */
557 #endif
558 0x06, /*BYTE MajorLinkerVersion; */
559 0x00, /*BYTE MinorLinkerVersion; */
560 0x00000000, /*DWORD SizeOfCode; */
561 0x00000000, /*DWORD SizeOfInitializedData; */
562 0x00000000, /*DWORD SizeOfUninitializedData; */
563 0x00000000, /*DWORD AddressOfEntryPoint; */
564 0x00000000, /*DWORD BaseOfCode; */
565 #ifndef TCC_TARGET_X86_64
566 0x00000000, /*DWORD BaseOfData; */
567 #endif
568 /* NT additional fields. */
569 #if defined(TCC_TARGET_ARM)
570 0x00100000, /*DWORD ImageBase; */
571 #else
572 0x00400000, /*DWORD ImageBase; */
573 #endif
574 0x00001000, /*DWORD SectionAlignment; */
575 0x00000200, /*DWORD FileAlignment; */
576 0x0004, /*WORD MajorOperatingSystemVersion; */
577 0x0000, /*WORD MinorOperatingSystemVersion; */
578 0x0000, /*WORD MajorImageVersion; */
579 0x0000, /*WORD MinorImageVersion; */
580 0x0004, /*WORD MajorSubsystemVersion; */
581 0x0000, /*WORD MinorSubsystemVersion; */
582 0x00000000, /*DWORD Win32VersionValue; */
583 0x00000000, /*DWORD SizeOfImage; */
584 0x00000200, /*DWORD SizeOfHeaders; */
585 0x00000000, /*DWORD CheckSum; */
586 0x0002, /*WORD Subsystem; */
587 0x0000, /*WORD DllCharacteristics; */
588 0x00100000, /*DWORD SizeOfStackReserve; */
589 0x00001000, /*DWORD SizeOfStackCommit; */
590 0x00100000, /*DWORD SizeOfHeapReserve; */
591 0x00001000, /*DWORD SizeOfHeapCommit; */
592 0x00000000, /*DWORD LoaderFlags; */
593 0x00000010, /*DWORD NumberOfRvaAndSizes; */
595 /* IMAGE_DATA_DIRECTORY DataDirectory[16]; */
596 {{0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0},
597 {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}}
600 struct pe_header pe_header = pe_template;
602 int i;
603 FILE *op;
604 DWORD file_offset, sum;
605 struct section_info *si;
606 IMAGE_SECTION_HEADER *psh;
608 op = fopen(pe->filename, "wb");
609 if (NULL == op) {
610 tcc_error_noabort("could not write '%s': %s", pe->filename, strerror(errno));
611 return -1;
614 pe->sizeofheaders = pe_file_align(pe,
615 sizeof (struct pe_header)
616 + pe->sec_count * sizeof (IMAGE_SECTION_HEADER)
619 file_offset = pe->sizeofheaders;
621 if (2 == pe->s1->verbose)
622 printf("-------------------------------"
623 "\n virt file size section" "\n");
624 for (i = 0; i < pe->sec_count; ++i) {
625 DWORD addr, size;
626 const char *sh_name;
628 si = pe->sec_info + i;
629 sh_name = si->name;
630 addr = si->sh_addr - pe->imagebase;
631 size = si->sh_size;
632 psh = &si->ish;
634 if (2 == pe->s1->verbose)
635 printf("%6x %6x %6x %s\n",
636 (unsigned)addr, (unsigned)file_offset, (unsigned)size, sh_name);
638 switch (si->cls) {
639 case sec_text:
640 pe_header.opthdr.BaseOfCode = addr;
641 pe_header.opthdr.AddressOfEntryPoint = addr + pe->start_addr;
642 break;
644 case sec_data:
645 #ifndef TCC_TARGET_X86_64
646 pe_header.opthdr.BaseOfData = addr;
647 #endif
648 break;
650 case sec_bss:
651 break;
653 case sec_reloc:
654 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_BASERELOC, addr, size);
655 break;
657 case sec_rsrc:
658 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_RESOURCE, addr, size);
659 break;
661 case sec_pdata:
662 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_EXCEPTION, addr, size);
663 break;
665 case sec_stab:
666 break;
669 if (pe->thunk == pe->s1->sections[si->ord]) {
670 if (pe->imp_size) {
671 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_IMPORT,
672 pe->imp_offs + addr, pe->imp_size);
673 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_IAT,
674 pe->iat_offs + addr, pe->iat_size);
676 if (pe->exp_size) {
677 pe_set_datadir(&pe_header, IMAGE_DIRECTORY_ENTRY_EXPORT,
678 pe->exp_offs + addr, pe->exp_size);
682 strncpy((char*)psh->Name, sh_name, sizeof psh->Name);
684 psh->Characteristics = pe_sec_flags[si->cls];
685 psh->VirtualAddress = addr;
686 psh->Misc.VirtualSize = size;
687 pe_header.opthdr.SizeOfImage =
688 umax(pe_virtual_align(pe, size + addr), pe_header.opthdr.SizeOfImage);
690 if (si->data_size) {
691 psh->PointerToRawData = file_offset;
692 file_offset = pe_file_align(pe, file_offset + si->data_size);
693 psh->SizeOfRawData = file_offset - psh->PointerToRawData;
697 //pe_header.filehdr.TimeDateStamp = time(NULL);
698 pe_header.filehdr.NumberOfSections = pe->sec_count;
699 pe_header.opthdr.SizeOfHeaders = pe->sizeofheaders;
700 pe_header.opthdr.ImageBase = pe->imagebase;
701 pe_header.opthdr.Subsystem = pe->subsystem;
702 if (pe->s1->pe_stack_size)
703 pe_header.opthdr.SizeOfStackReserve = pe->s1->pe_stack_size;
704 if (PE_DLL == pe->type)
705 pe_header.filehdr.Characteristics = CHARACTERISTICS_DLL;
707 sum = 0;
708 pe_fwrite(&pe_header, sizeof pe_header, op, &sum);
709 for (i = 0; i < pe->sec_count; ++i)
710 pe_fwrite(&pe->sec_info[i].ish, sizeof(IMAGE_SECTION_HEADER), op, &sum);
711 pe_fpad(op, pe->sizeofheaders);
712 for (i = 0; i < pe->sec_count; ++i) {
713 si = pe->sec_info + i;
714 psh = &si->ish;
715 if (si->data_size) {
716 pe_fwrite(si->data, si->data_size, op, &sum);
717 file_offset = psh->PointerToRawData + psh->SizeOfRawData;
718 pe_fpad(op, file_offset);
722 pe_header.opthdr.CheckSum = sum + file_offset;
723 fseek(op, offsetof(struct pe_header, opthdr.CheckSum), SEEK_SET);
724 pe_fwrite(&pe_header.opthdr.CheckSum, sizeof pe_header.opthdr.CheckSum, op, NULL);
725 fclose (op);
727 if (2 == pe->s1->verbose)
728 printf("-------------------------------\n");
729 if (pe->s1->verbose)
730 printf("<- %s (%u bytes)\n", pe->filename, (unsigned)file_offset);
732 return 0;
735 /*----------------------------------------------------------------------------*/
737 static struct import_symbol *pe_add_import(struct pe_info *pe, int sym_index)
739 int i;
740 int dll_index;
741 struct pe_import_info *p;
742 struct import_symbol *s;
743 ElfW(Sym) *isym;
745 isym = (ElfW(Sym) *)pe->s1->dynsymtab_section->data + sym_index;
746 dll_index = isym->st_size;
748 i = dynarray_assoc ((void**)pe->imp_info, pe->imp_count, dll_index);
749 if (-1 != i) {
750 p = pe->imp_info[i];
751 goto found_dll;
753 p = tcc_mallocz(sizeof *p);
754 p->dll_index = dll_index;
755 dynarray_add((void***)&pe->imp_info, &pe->imp_count, p);
757 found_dll:
758 i = dynarray_assoc ((void**)p->symbols, p->sym_count, sym_index);
759 if (-1 != i)
760 return p->symbols[i];
762 s = tcc_mallocz(sizeof *s);
763 dynarray_add((void***)&p->symbols, &p->sym_count, s);
764 s->sym_index = sym_index;
765 return s;
768 /*----------------------------------------------------------------------------*/
769 static void pe_build_imports(struct pe_info *pe)
771 int thk_ptr, ent_ptr, dll_ptr, sym_cnt, i;
772 DWORD rva_base = pe->thunk->sh_addr - pe->imagebase;
773 int ndlls = pe->imp_count;
775 for (sym_cnt = i = 0; i < ndlls; ++i)
776 sym_cnt += pe->imp_info[i]->sym_count;
778 if (0 == sym_cnt)
779 return;
781 pe_align_section(pe->thunk, 16);
783 pe->imp_offs = dll_ptr = pe->thunk->data_offset;
784 pe->imp_size = (ndlls + 1) * sizeof(IMAGE_IMPORT_DESCRIPTOR);
785 pe->iat_offs = dll_ptr + pe->imp_size;
786 pe->iat_size = (sym_cnt + ndlls) * sizeof(ADDR3264);
787 section_ptr_add(pe->thunk, pe->imp_size + 2*pe->iat_size);
789 thk_ptr = pe->iat_offs;
790 ent_ptr = pe->iat_offs + pe->iat_size;
792 for (i = 0; i < pe->imp_count; ++i) {
793 IMAGE_IMPORT_DESCRIPTOR *hdr;
794 int k, n, dllindex;
795 ADDR3264 v;
796 struct pe_import_info *p = pe->imp_info[i];
797 const char *name;
798 DLLReference *dllref;
800 dllindex = p->dll_index;
801 if (dllindex)
802 name = (dllref = pe->s1->loaded_dlls[dllindex-1])->name;
803 else
804 name = "", dllref = NULL;
806 /* put the dll name into the import header */
807 v = put_elf_str(pe->thunk, name);
808 hdr = (IMAGE_IMPORT_DESCRIPTOR*)(pe->thunk->data + dll_ptr);
809 hdr->FirstThunk = thk_ptr + rva_base;
810 hdr->OriginalFirstThunk = ent_ptr + rva_base;
811 hdr->Name = v + rva_base;
813 for (k = 0, n = p->sym_count; k <= n; ++k) {
814 if (k < n) {
815 int iat_index = p->symbols[k]->iat_index;
816 int sym_index = p->symbols[k]->sym_index;
817 ElfW(Sym) *imp_sym = (ElfW(Sym) *)pe->s1->dynsymtab_section->data + sym_index;
818 ElfW(Sym) *org_sym = (ElfW(Sym) *)symtab_section->data + iat_index;
819 const char *name = pe->s1->dynsymtab_section->link->data + imp_sym->st_name;
820 int ordinal;
822 org_sym->st_value = thk_ptr;
823 org_sym->st_shndx = pe->thunk->sh_num;
825 if (dllref)
826 v = 0, ordinal = imp_sym->st_value; /* ordinal from pe_load_def */
827 else
828 ordinal = 0, v = imp_sym->st_value; /* address from tcc_add_symbol() */
830 #ifdef TCC_IS_NATIVE
831 if (pe->type == PE_RUN) {
832 if (dllref) {
833 if ( !dllref->handle )
834 dllref->handle = LoadLibrary(dllref->name);
835 v = (ADDR3264)GetProcAddress(dllref->handle, ordinal?(LPCSTR)NULL+ordinal:name);
837 if (!v)
838 tcc_error_noabort("can't build symbol '%s'", name);
839 } else
840 #endif
841 if (ordinal) {
842 v = ordinal | (ADDR3264)1 << (sizeof(ADDR3264)*8 - 1);
843 } else {
844 v = pe->thunk->data_offset + rva_base;
845 section_ptr_add(pe->thunk, sizeof(WORD)); /* hint, not used */
846 put_elf_str(pe->thunk, name);
849 } else {
850 v = 0; /* last entry is zero */
853 *(ADDR3264*)(pe->thunk->data+thk_ptr) =
854 *(ADDR3264*)(pe->thunk->data+ent_ptr) = v;
855 thk_ptr += sizeof (ADDR3264);
856 ent_ptr += sizeof (ADDR3264);
858 dll_ptr += sizeof(IMAGE_IMPORT_DESCRIPTOR);
859 dynarray_reset(&p->symbols, &p->sym_count);
861 dynarray_reset(&pe->imp_info, &pe->imp_count);
864 /* ------------------------------------------------------------- */
866 struct pe_sort_sym
868 int index;
869 const char *name;
872 static int sym_cmp(const void *va, const void *vb)
874 const char *ca = (*(struct pe_sort_sym**)va)->name;
875 const char *cb = (*(struct pe_sort_sym**)vb)->name;
876 return strcmp(ca, cb);
879 static void pe_build_exports(struct pe_info *pe)
881 ElfW(Sym) *sym;
882 int sym_index, sym_end;
883 DWORD rva_base, func_o, name_o, ord_o, str_o;
884 IMAGE_EXPORT_DIRECTORY *hdr;
885 int sym_count, ord;
886 struct pe_sort_sym **sorted, *p;
888 FILE *op;
889 char buf[MAX_PATH];
890 const char *dllname;
891 const char *name;
893 rva_base = pe->thunk->sh_addr - pe->imagebase;
894 sym_count = 0, sorted = NULL, op = NULL;
896 sym_end = symtab_section->data_offset / sizeof(ElfW(Sym));
897 for (sym_index = 1; sym_index < sym_end; ++sym_index) {
898 sym = (ElfW(Sym)*)symtab_section->data + sym_index;
899 name = pe_export_name(pe->s1, sym);
900 if ((sym->st_other & ST_PE_EXPORT)
901 /* export only symbols from actually written sections */
902 && pe->s1->sections[sym->st_shndx]->sh_addr) {
903 p = tcc_malloc(sizeof *p);
904 p->index = sym_index;
905 p->name = name;
906 dynarray_add((void***)&sorted, &sym_count, p);
908 #if 0
909 if (sym->st_other & ST_PE_EXPORT)
910 printf("export: %s\n", name);
911 if (sym->st_other & ST_PE_STDCALL)
912 printf("stdcall: %s\n", name);
913 #endif
916 if (0 == sym_count)
917 return;
919 qsort (sorted, sym_count, sizeof *sorted, sym_cmp);
921 pe_align_section(pe->thunk, 16);
922 dllname = tcc_basename(pe->filename);
924 pe->exp_offs = pe->thunk->data_offset;
925 func_o = pe->exp_offs + sizeof(IMAGE_EXPORT_DIRECTORY);
926 name_o = func_o + sym_count * sizeof (DWORD);
927 ord_o = name_o + sym_count * sizeof (DWORD);
928 str_o = ord_o + sym_count * sizeof(WORD);
930 hdr = section_ptr_add(pe->thunk, str_o - pe->exp_offs);
931 hdr->Characteristics = 0;
932 hdr->Base = 1;
933 hdr->NumberOfFunctions = sym_count;
934 hdr->NumberOfNames = sym_count;
935 hdr->AddressOfFunctions = func_o + rva_base;
936 hdr->AddressOfNames = name_o + rva_base;
937 hdr->AddressOfNameOrdinals = ord_o + rva_base;
938 hdr->Name = str_o + rva_base;
939 put_elf_str(pe->thunk, dllname);
941 #if 1
942 /* automatically write exports to <output-filename>.def */
943 pstrcpy(buf, sizeof buf, pe->filename);
944 strcpy(tcc_fileextension(buf), ".def");
945 op = fopen(buf, "w");
946 if (NULL == op) {
947 tcc_error_noabort("could not create '%s': %s", buf, strerror(errno));
948 } else {
949 fprintf(op, "LIBRARY %s\n\nEXPORTS\n", dllname);
950 if (pe->s1->verbose)
951 printf("<- %s (%d symbols)\n", buf, sym_count);
953 #endif
955 for (ord = 0; ord < sym_count; ++ord)
957 p = sorted[ord], sym_index = p->index, name = p->name;
958 /* insert actual address later in pe_relocate_rva */
959 put_elf_reloc(symtab_section, pe->thunk,
960 func_o, R_XXX_RELATIVE, sym_index);
961 *(DWORD*)(pe->thunk->data + name_o)
962 = pe->thunk->data_offset + rva_base;
963 *(WORD*)(pe->thunk->data + ord_o)
964 = ord;
965 put_elf_str(pe->thunk, name);
966 func_o += sizeof (DWORD);
967 name_o += sizeof (DWORD);
968 ord_o += sizeof (WORD);
969 if (op)
970 fprintf(op, "%s\n", name);
972 pe->exp_size = pe->thunk->data_offset - pe->exp_offs;
973 dynarray_reset(&sorted, &sym_count);
974 if (op)
975 fclose(op);
978 /* ------------------------------------------------------------- */
979 static void pe_build_reloc (struct pe_info *pe)
981 DWORD offset, block_ptr, addr;
982 int count, i;
983 ElfW_Rel *rel, *rel_end;
984 Section *s = NULL, *sr;
986 offset = addr = block_ptr = count = i = 0;
987 rel = rel_end = NULL;
989 for(;;) {
990 if (rel < rel_end) {
991 int type = ELFW(R_TYPE)(rel->r_info);
992 addr = rel->r_offset + s->sh_addr;
993 ++ rel;
994 if (type != REL_TYPE_DIRECT)
995 continue;
996 if (count == 0) { /* new block */
997 block_ptr = pe->reloc->data_offset;
998 section_ptr_add(pe->reloc, sizeof(struct pe_reloc_header));
999 offset = addr & 0xFFFFFFFF<<12;
1001 if ((addr -= offset) < (1<<12)) { /* one block spans 4k addresses */
1002 WORD *wp = section_ptr_add(pe->reloc, sizeof (WORD));
1003 *wp = addr | IMAGE_REL_BASED_HIGHLOW<<12;
1004 ++count;
1005 continue;
1007 -- rel;
1009 } else if (i < pe->sec_count) {
1010 sr = (s = pe->s1->sections[pe->sec_info[i++].ord])->reloc;
1011 if (sr) {
1012 rel = (ElfW_Rel *)sr->data;
1013 rel_end = (ElfW_Rel *)(sr->data + sr->data_offset);
1015 continue;
1018 if (count) {
1019 /* store the last block and ready for a new one */
1020 struct pe_reloc_header *hdr;
1021 if (count & 1) /* align for DWORDS */
1022 section_ptr_add(pe->reloc, sizeof(WORD)), ++count;
1023 hdr = (struct pe_reloc_header *)(pe->reloc->data + block_ptr);
1024 hdr -> offset = offset - pe->imagebase;
1025 hdr -> size = count * sizeof(WORD) + sizeof(struct pe_reloc_header);
1026 count = 0;
1029 if (rel >= rel_end)
1030 break;
1034 /* ------------------------------------------------------------- */
1035 static int pe_section_class(Section *s)
1037 int type, flags;
1038 const char *name;
1040 type = s->sh_type;
1041 flags = s->sh_flags;
1042 name = s->name;
1043 if (flags & SHF_ALLOC) {
1044 if (type == SHT_PROGBITS) {
1045 if (flags & SHF_EXECINSTR)
1046 return sec_text;
1047 if (flags & SHF_WRITE)
1048 return sec_data;
1049 if (0 == strcmp(name, ".rsrc"))
1050 return sec_rsrc;
1051 if (0 == strcmp(name, ".iedat"))
1052 return sec_idata;
1053 if (0 == strcmp(name, ".pdata"))
1054 return sec_pdata;
1055 return sec_other;
1056 } else if (type == SHT_NOBITS) {
1057 if (flags & SHF_WRITE)
1058 return sec_bss;
1060 } else {
1061 if (0 == strcmp(name, ".reloc"))
1062 return sec_reloc;
1063 if (0 == strncmp(name, ".stab", 5)) /* .stab and .stabstr */
1064 return sec_stab;
1066 return -1;
1069 static int pe_assign_addresses (struct pe_info *pe)
1071 int i, k, o, c;
1072 DWORD addr;
1073 int *section_order;
1074 struct section_info *si;
1075 Section *s;
1077 // pe->thunk = new_section(pe->s1, ".iedat", SHT_PROGBITS, SHF_ALLOC);
1079 section_order = tcc_malloc(pe->s1->nb_sections * sizeof (int));
1080 for (o = k = 0 ; k < sec_last; ++k) {
1081 for (i = 1; i < pe->s1->nb_sections; ++i) {
1082 s = pe->s1->sections[i];
1083 if (k == pe_section_class(s)) {
1084 // printf("%s %d\n", s->name, k);
1085 s->sh_addr = pe->imagebase;
1086 section_order[o++] = i;
1091 pe->sec_info = tcc_mallocz(o * sizeof (struct section_info));
1092 addr = pe->imagebase + 1;
1094 for (i = 0; i < o; ++i)
1096 k = section_order[i];
1097 s = pe->s1->sections[k];
1098 c = pe_section_class(s);
1099 si = &pe->sec_info[pe->sec_count];
1101 #ifdef PE_MERGE_DATA
1102 if (c == sec_bss && pe->sec_count && si[-1].cls == sec_data) {
1103 /* append .bss to .data */
1104 s->sh_addr = addr = ((addr-1) | (s->sh_addralign-1)) + 1;
1105 addr += s->data_offset;
1106 si[-1].sh_size = addr - si[-1].sh_addr;
1107 continue;
1109 #endif
1110 if (c == sec_stab && 0 == pe->s1->do_debug)
1111 continue;
1113 strcpy(si->name, s->name);
1114 si->cls = c;
1115 si->ord = k;
1116 si->sh_addr = s->sh_addr = addr = pe_virtual_align(pe, addr);
1117 si->sh_flags = s->sh_flags;
1119 if (c == sec_data && NULL == pe->thunk)
1120 pe->thunk = s;
1122 if (s == pe->thunk) {
1123 pe_build_imports(pe);
1124 pe_build_exports(pe);
1127 if (c == sec_reloc)
1128 pe_build_reloc (pe);
1130 if (s->data_offset)
1132 if (s->sh_type != SHT_NOBITS) {
1133 si->data = s->data;
1134 si->data_size = s->data_offset;
1137 addr += s->data_offset;
1138 si->sh_size = s->data_offset;
1139 ++pe->sec_count;
1141 // printf("%08x %05x %s\n", si->sh_addr, si->sh_size, si->name);
1144 #if 0
1145 for (i = 1; i < pe->s1->nb_sections; ++i) {
1146 Section *s = pe->s1->sections[i];
1147 int type = s->sh_type;
1148 int flags = s->sh_flags;
1149 printf("section %-16s %-10s %5x %s,%s,%s\n",
1150 s->name,
1151 type == SHT_PROGBITS ? "progbits" :
1152 type == SHT_NOBITS ? "nobits" :
1153 type == SHT_SYMTAB ? "symtab" :
1154 type == SHT_STRTAB ? "strtab" :
1155 type == SHT_RELX ? "rel" : "???",
1156 s->data_offset,
1157 flags & SHF_ALLOC ? "alloc" : "",
1158 flags & SHF_WRITE ? "write" : "",
1159 flags & SHF_EXECINSTR ? "exec" : ""
1162 pe->s1->verbose = 2;
1163 #endif
1165 tcc_free(section_order);
1166 return 0;
1169 /* ------------------------------------------------------------- */
1170 static void pe_relocate_rva (struct pe_info *pe, Section *s)
1172 Section *sr = s->reloc;
1173 ElfW_Rel *rel, *rel_end;
1174 rel_end = (ElfW_Rel *)(sr->data + sr->data_offset);
1175 for(rel = (ElfW_Rel *)sr->data; rel < rel_end; rel++) {
1176 if (ELFW(R_TYPE)(rel->r_info) == R_XXX_RELATIVE) {
1177 int sym_index = ELFW(R_SYM)(rel->r_info);
1178 DWORD addr = s->sh_addr;
1179 if (sym_index) {
1180 ElfW(Sym) *sym = (ElfW(Sym) *)symtab_section->data + sym_index;
1181 addr = sym->st_value;
1183 // printf("reloc rva %08x %08x %s\n", (DWORD)rel->r_offset, addr, s->name);
1184 *(DWORD*)(s->data + rel->r_offset) += addr - pe->imagebase;
1189 /*----------------------------------------------------------------------------*/
1191 static int pe_isafunc(int sym_index)
1193 Section *sr = text_section->reloc;
1194 ElfW_Rel *rel, *rel_end;
1195 Elf32_Word info = ELF32_R_INFO(sym_index, R_386_PC32);
1196 if (!sr)
1197 return 0;
1198 rel_end = (ElfW_Rel *)(sr->data + sr->data_offset);
1199 for (rel = (ElfW_Rel *)sr->data; rel < rel_end; rel++)
1200 if (rel->r_info == info)
1201 return 1;
1202 return 0;
1205 /*----------------------------------------------------------------------------*/
1206 static int pe_check_symbols(struct pe_info *pe)
1208 ElfW(Sym) *sym;
1209 int sym_index, sym_end;
1210 int ret = 0;
1212 pe_align_section(text_section, 8);
1214 sym_end = symtab_section->data_offset / sizeof(ElfW(Sym));
1215 for (sym_index = 1; sym_index < sym_end; ++sym_index) {
1217 sym = (ElfW(Sym) *)symtab_section->data + sym_index;
1218 if (sym->st_shndx == SHN_UNDEF) {
1220 const char *name = symtab_section->link->data + sym->st_name;
1221 unsigned type = ELFW(ST_TYPE)(sym->st_info);
1222 int imp_sym = pe_find_import(pe->s1, sym);
1223 struct import_symbol *is;
1225 if (0 == imp_sym)
1226 goto not_found;
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;
1236 is = pe_add_import(pe, imp_sym);
1238 if (type == STT_FUNC) {
1239 unsigned long offset = is->thk_offset;
1240 if (offset) {
1241 /* got aliased symbol, like stricmp and _stricmp */
1243 } else {
1244 char buffer[100];
1245 WORD *p;
1247 offset = text_section->data_offset;
1248 /* add the 'jmp IAT[x]' instruction */
1249 #ifdef TCC_TARGET_ARM
1250 p = section_ptr_add(text_section, 8+4); // room for code and address
1251 (*(DWORD*)(p)) = 0xE59FC000; // arm code ldr ip, [pc] ; PC+8+0 = 0001xxxx
1252 (*(DWORD*)(p+2)) = 0xE59CF000; // arm code ldr pc, [ip]
1253 #else
1254 p = section_ptr_add(text_section, 8);
1255 *p = 0x25FF;
1256 #ifdef TCC_TARGET_X86_64
1257 *(DWORD*)(p+1) = (DWORD)-4;
1258 #endif
1259 #endif
1260 /* add a helper symbol, will be patched later in
1261 pe_build_imports */
1262 sprintf(buffer, "IAT.%s", name);
1263 is->iat_index = put_elf_sym(
1264 symtab_section, 0, sizeof(DWORD),
1265 ELFW(ST_INFO)(STB_GLOBAL, STT_OBJECT),
1266 0, SHN_UNDEF, buffer);
1267 #ifdef TCC_TARGET_ARM
1268 put_elf_reloc(symtab_section, text_section,
1269 offset + 8, R_XXX_THUNKFIX, is->iat_index); // offset to IAT position
1270 #else
1271 put_elf_reloc(symtab_section, text_section,
1272 offset + 2, R_XXX_THUNKFIX, is->iat_index);
1273 #endif
1274 is->thk_offset = offset;
1277 /* tcc_realloc might have altered sym's address */
1278 sym = (ElfW(Sym) *)symtab_section->data + sym_index;
1280 /* patch the original symbol */
1281 sym->st_value = offset;
1282 sym->st_shndx = text_section->sh_num;
1283 sym->st_other &= ~ST_PE_EXPORT; /* do not export */
1284 continue;
1287 if (type == STT_OBJECT) { /* data, ptr to that should be */
1288 if (0 == is->iat_index) {
1289 /* original symbol will be patched later in pe_build_imports */
1290 is->iat_index = sym_index;
1291 continue;
1295 not_found:
1296 tcc_error_noabort("undefined symbol '%s'", name);
1297 ret = -1;
1299 } else if (pe->s1->rdynamic
1300 && ELFW(ST_BIND)(sym->st_info) != STB_LOCAL) {
1301 /* if -rdynamic option, then export all non local symbols */
1302 sym->st_other |= ST_PE_EXPORT;
1305 return ret;
1308 /*----------------------------------------------------------------------------*/
1309 #ifdef PE_PRINT_SECTIONS
1310 static void pe_print_section(FILE * f, Section * s)
1312 /* just if you'r curious */
1313 BYTE *p, *e, b;
1314 int i, n, l, m;
1315 p = s->data;
1316 e = s->data + s->data_offset;
1317 l = e - p;
1319 fprintf(f, "section \"%s\"", s->name);
1320 if (s->link)
1321 fprintf(f, "\nlink \"%s\"", s->link->name);
1322 if (s->reloc)
1323 fprintf(f, "\nreloc \"%s\"", s->reloc->name);
1324 fprintf(f, "\nv_addr %08X", (unsigned)s->sh_addr);
1325 fprintf(f, "\ncontents %08X", (unsigned)l);
1326 fprintf(f, "\n\n");
1328 if (s->sh_type == SHT_NOBITS)
1329 return;
1331 if (0 == l)
1332 return;
1334 if (s->sh_type == SHT_SYMTAB)
1335 m = sizeof(ElfW(Sym));
1336 else if (s->sh_type == SHT_RELX)
1337 m = sizeof(ElfW_Rel);
1338 else
1339 m = 16;
1341 fprintf(f, "%-8s", "offset");
1342 for (i = 0; i < m; ++i)
1343 fprintf(f, " %02x", i);
1344 n = 56;
1346 if (s->sh_type == SHT_SYMTAB || s->sh_type == SHT_RELX) {
1347 const char *fields1[] = {
1348 "name",
1349 "value",
1350 "size",
1351 "bind",
1352 "type",
1353 "other",
1354 "shndx",
1355 NULL
1358 const char *fields2[] = {
1359 "offs",
1360 "type",
1361 "symb",
1362 NULL
1365 const char **p;
1367 if (s->sh_type == SHT_SYMTAB)
1368 p = fields1, n = 106;
1369 else
1370 p = fields2, n = 58;
1372 for (i = 0; p[i]; ++i)
1373 fprintf(f, "%6s", p[i]);
1374 fprintf(f, " symbol");
1377 fprintf(f, "\n");
1378 for (i = 0; i < n; ++i)
1379 fprintf(f, "-");
1380 fprintf(f, "\n");
1382 for (i = 0; i < l;)
1384 fprintf(f, "%08X", i);
1385 for (n = 0; n < m; ++n) {
1386 if (n + i < l)
1387 fprintf(f, " %02X", p[i + n]);
1388 else
1389 fprintf(f, " ");
1392 if (s->sh_type == SHT_SYMTAB) {
1393 ElfW(Sym) *sym = (ElfW(Sym) *) (p + i);
1394 const char *name = s->link->data + sym->st_name;
1395 fprintf(f, " %04X %04X %04X %02X %02X %02X %04X \"%s\"",
1396 (unsigned)sym->st_name,
1397 (unsigned)sym->st_value,
1398 (unsigned)sym->st_size,
1399 (unsigned)ELFW(ST_BIND)(sym->st_info),
1400 (unsigned)ELFW(ST_TYPE)(sym->st_info),
1401 (unsigned)sym->st_other,
1402 (unsigned)sym->st_shndx,
1403 name);
1405 } else if (s->sh_type == SHT_RELX) {
1406 ElfW_Rel *rel = (ElfW_Rel *) (p + i);
1407 ElfW(Sym) *sym =
1408 (ElfW(Sym) *) s->link->data + ELFW(R_SYM)(rel->r_info);
1409 const char *name = s->link->link->data + sym->st_name;
1410 fprintf(f, " %04X %02X %04X \"%s\"",
1411 (unsigned)rel->r_offset,
1412 (unsigned)ELFW(R_TYPE)(rel->r_info),
1413 (unsigned)ELFW(R_SYM)(rel->r_info),
1414 name);
1415 } else {
1416 fprintf(f, " ");
1417 for (n = 0; n < m; ++n) {
1418 if (n + i < l) {
1419 b = p[i + n];
1420 if (b < 32 || b >= 127)
1421 b = '.';
1422 fprintf(f, "%c", b);
1426 i += m;
1427 fprintf(f, "\n");
1429 fprintf(f, "\n\n");
1432 static void pe_print_sections(TCCState *s1, const char *fname)
1434 Section *s;
1435 FILE *f;
1436 int i;
1437 f = fopen(fname, "w");
1438 for (i = 1; i < s1->nb_sections; ++i) {
1439 s = s1->sections[i];
1440 pe_print_section(f, s);
1442 pe_print_section(f, s1->dynsymtab_section);
1443 fclose(f);
1445 #endif
1447 /* ------------------------------------------------------------- */
1448 /* helper function for load/store to insert one more indirection */
1450 ST_FUNC SValue *pe_getimport(SValue *sv, SValue *v2)
1452 Sym *sym;
1453 ElfW(Sym) *esym;
1454 int r2;
1456 if ((sv->r & (VT_VALMASK|VT_SYM)) != (VT_CONST|VT_SYM) || (sv->r2 != VT_CONST))
1457 return sv;
1458 sym = sv->sym;
1459 if ((sym->type.t & (VT_EXTERN|VT_STATIC)) != VT_EXTERN)
1460 return sv;
1461 if (!sym->c)
1462 put_extern_sym(sym, NULL, 0, 0);
1463 esym = &((ElfW(Sym) *)symtab_section->data)[sym->c];
1464 if (!(esym->st_other & ST_PE_IMPORT))
1465 return sv;
1467 // printf("import %04x %04x %04x %s\n", sv->type.t, sym->type.t, sv->r, get_tok_str(sv->sym->v, NULL));
1469 memset(v2, 0, sizeof *v2);
1470 v2->type.t = VT_PTR;
1471 v2->r = VT_CONST | VT_SYM | VT_LVAL;
1472 v2->sym = sv->sym;
1474 r2 = get_reg(RC_INT);
1475 load(r2, v2);
1476 v2->r = r2;
1478 if ((uint32_t)sv->c.i) {
1479 vpushv(v2);
1480 vpushi(sv->c.i);
1481 gen_opi('+');
1482 *v2 = *vtop--;
1485 v2->type.t = sv->type.t;
1486 v2->r |= sv->r & VT_LVAL;
1487 return v2;
1490 ST_FUNC int pe_putimport(TCCState *s1, int dllindex, const char *name, addr_t value)
1492 return add_elf_sym(
1493 s1->dynsymtab_section,
1494 value,
1495 dllindex, /* st_size */
1496 ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE),
1498 value ? SHN_ABS : SHN_UNDEF,
1499 name
1503 static int add_dllref(TCCState *s1, const char *dllname)
1505 DLLReference *dllref;
1506 int i;
1507 for (i = 0; i < s1->nb_loaded_dlls; ++i)
1508 if (0 == strcmp(s1->loaded_dlls[i]->name, dllname))
1509 return i + 1;
1510 dllref = tcc_mallocz(sizeof(DLLReference) + strlen(dllname));
1511 strcpy(dllref->name, dllname);
1512 dynarray_add((void ***) &s1->loaded_dlls, &s1->nb_loaded_dlls, dllref);
1513 return s1->nb_loaded_dlls;
1516 /* ------------------------------------------------------------- */
1518 static int read_mem(int fd, unsigned offset, void *buffer, unsigned len)
1520 lseek(fd, offset, SEEK_SET);
1521 return len == read(fd, buffer, len);
1524 /* -------------------------------------------------------------
1525 * This is for compiled windows resources in 'coff' format
1526 * as generated by 'windres.exe -O coff ...'.
1529 static int pe_load_res(TCCState *s1, int fd)
1531 struct pe_rsrc_header hdr;
1532 Section *rsrc_section;
1533 int i, ret = -1;
1534 BYTE *ptr;
1535 unsigned offs;
1537 if (!read_mem(fd, 0, &hdr, sizeof hdr))
1538 goto quit;
1540 if (hdr.filehdr.Machine != IMAGE_FILE_MACHINE
1541 || hdr.filehdr.NumberOfSections != 1
1542 || strcmp(hdr.sectionhdr.Name, ".rsrc") != 0)
1543 goto quit;
1545 rsrc_section = new_section(s1, ".rsrc", SHT_PROGBITS, SHF_ALLOC);
1546 ptr = section_ptr_add(rsrc_section, hdr.sectionhdr.SizeOfRawData);
1547 offs = hdr.sectionhdr.PointerToRawData;
1548 if (!read_mem(fd, offs, ptr, hdr.sectionhdr.SizeOfRawData))
1549 goto quit;
1550 offs = hdr.sectionhdr.PointerToRelocations;
1551 for (i = 0; i < hdr.sectionhdr.NumberOfRelocations; ++i)
1553 struct pe_rsrc_reloc rel;
1554 if (!read_mem(fd, offs, &rel, sizeof rel))
1555 goto quit;
1556 // printf("rsrc_reloc: %x %x %x\n", rel.offset, rel.size, rel.type);
1557 if (rel.type != RSRC_RELTYPE)
1558 goto quit;
1559 put_elf_reloc(symtab_section, rsrc_section,
1560 rel.offset, R_XXX_RELATIVE, 0);
1561 offs += sizeof rel;
1563 ret = 0;
1564 quit:
1565 return ret;
1568 /* ------------------------------------------------------------- */
1569 static int pe_load_def(TCCState *s1, int fd)
1571 int state = 0, ret = -1, dllindex = 0, ord;
1572 char line[400], dllname[80], *p, *x;
1573 FILE *fp;
1575 fp = fdopen(dup(fd), "rb");
1576 while (fgets(line, sizeof line, fp))
1578 p = trimfront(trimback(line, strchr(line, 0)));
1579 if (0 == *p || ';' == *p)
1580 continue;
1582 switch (state) {
1583 case 0:
1584 if (0 != strnicmp(p, "LIBRARY", 7))
1585 goto quit;
1586 pstrcpy(dllname, sizeof dllname, trimfront(p+7));
1587 ++state;
1588 continue;
1590 case 1:
1591 if (0 != stricmp(p, "EXPORTS"))
1592 goto quit;
1593 ++state;
1594 continue;
1596 case 2:
1597 dllindex = add_dllref(s1, dllname);
1598 ++state;
1599 /* fall through */
1600 default:
1601 /* get ordinal and will store in sym->st_value */
1602 ord = 0;
1603 x = strchr(p, ' ');
1604 if (x) {
1605 *x = 0, x = strrchr(x + 1, '@');
1606 if (x) {
1607 char *d;
1608 ord = (int)strtol(x + 1, &d, 10);
1609 if (*d)
1610 ord = 0;
1613 pe_putimport(s1, dllindex, p, ord);
1614 continue;
1617 ret = 0;
1618 quit:
1619 fclose(fp);
1620 return ret;
1623 /* ------------------------------------------------------------- */
1624 #define TINY_IMPDEF_GET_EXPORT_NAMES_ONLY
1625 #include "win32/tools/tiny_impdef.c"
1627 static int pe_load_dll(TCCState *s1, const char *dllname, int fd)
1629 char *p, *q;
1630 int index;
1631 p = get_export_names(fd);
1632 if (!p)
1633 return -1;
1634 index = add_dllref(s1, dllname);
1635 for (q = p; *q; q += 1 + strlen(q))
1636 pe_putimport(s1, index, q, 0);
1637 tcc_free(p);
1638 return 0;
1641 /* ------------------------------------------------------------- */
1642 ST_FUNC int pe_load_file(struct TCCState *s1, const char *filename, int fd)
1644 int ret = -1;
1645 char buf[10];
1646 if (0 == strcmp(tcc_fileextension(filename), ".def"))
1647 ret = pe_load_def(s1, fd);
1648 else if (pe_load_res(s1, fd) == 0)
1649 ret = 0;
1650 else if (read_mem(fd, 0, buf, sizeof buf) && 0 == strncmp(buf, "MZ", 2))
1651 ret = pe_load_dll(s1, tcc_basename(filename), fd);
1652 return ret;
1655 /* ------------------------------------------------------------- */
1656 #ifdef TCC_TARGET_X86_64
1657 static unsigned pe_add_uwwind_info(TCCState *s1)
1659 if (NULL == s1->uw_pdata) {
1660 s1->uw_pdata = find_section(tcc_state, ".pdata");
1661 s1->uw_pdata->sh_addralign = 4;
1662 s1->uw_sym = put_elf_sym(symtab_section, 0, 0, 0, 0, text_section->sh_num, NULL);
1665 if (0 == s1->uw_offs) {
1666 /* As our functions all have the same stackframe, we use one entry for all */
1667 static const unsigned char uw_info[] = {
1668 0x01, // UBYTE: 3 Version , UBYTE: 5 Flags
1669 0x04, // UBYTE Size of prolog
1670 0x02, // UBYTE Count of unwind codes
1671 0x05, // UBYTE: 4 Frame Register (rbp), UBYTE: 4 Frame Register offset (scaled)
1672 // USHORT * n Unwind codes array
1673 // 0x0b, 0x01, 0xff, 0xff, // stack size
1674 0x04, 0x03, // set frame ptr (mov rsp -> rbp)
1675 0x01, 0x50 // push reg (rbp)
1678 Section *s = text_section;
1679 unsigned char *p;
1681 section_ptr_add(s, -s->data_offset & 3); /* align */
1682 s1->uw_offs = s->data_offset;
1683 p = section_ptr_add(s, sizeof uw_info);
1684 memcpy(p, uw_info, sizeof uw_info);
1687 return s1->uw_offs;
1690 ST_FUNC void pe_add_unwind_data(unsigned start, unsigned end, unsigned stack)
1692 TCCState *s1 = tcc_state;
1693 Section *pd;
1694 unsigned o, n, d;
1695 struct /* _RUNTIME_FUNCTION */ {
1696 DWORD BeginAddress;
1697 DWORD EndAddress;
1698 DWORD UnwindData;
1699 } *p;
1701 d = pe_add_uwwind_info(s1);
1702 pd = s1->uw_pdata;
1703 o = pd->data_offset;
1704 p = section_ptr_add(pd, sizeof *p);
1706 /* record this function */
1707 p->BeginAddress = start;
1708 p->EndAddress = end;
1709 p->UnwindData = d;
1711 /* put relocations on it */
1712 for (n = o + sizeof *p; o < n; o += sizeof p->BeginAddress)
1713 put_elf_reloc(symtab_section, pd, o, R_X86_64_RELATIVE, s1->uw_sym);
1715 #endif
1716 /* ------------------------------------------------------------- */
1717 #ifdef TCC_TARGET_X86_64
1718 #define PE_STDSYM(n,s) n
1719 #else
1720 #define PE_STDSYM(n,s) "_" n s
1721 #endif
1723 static void pe_add_runtime(TCCState *s1, struct pe_info *pe)
1725 const char *start_symbol;
1726 int pe_type = 0;
1728 if (find_elf_sym(symtab_section, PE_STDSYM("WinMain","@16")))
1729 pe_type = PE_GUI;
1730 else
1731 if (TCC_OUTPUT_DLL == s1->output_type) {
1732 pe_type = PE_DLL;
1733 /* need this for 'tccelf.c:relocate_section()' */
1734 s1->output_type = TCC_OUTPUT_EXE;
1736 else
1737 pe_type = PE_EXE;
1739 start_symbol =
1740 TCC_OUTPUT_MEMORY == s1->output_type
1741 ? PE_GUI == pe_type ? "__runwinmain" : "_main"
1742 : PE_DLL == pe_type ? PE_STDSYM("__dllstart","@12")
1743 : PE_GUI == pe_type ? "__winstart" : "__start"
1746 if (!s1->leading_underscore || strchr(start_symbol, '@'))
1747 ++start_symbol;
1749 /* grab the startup code from libtcc1 */
1750 if (TCC_OUTPUT_MEMORY != s1->output_type || PE_GUI == pe_type)
1751 add_elf_sym(symtab_section,
1752 0, 0,
1753 ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
1754 SHN_UNDEF, start_symbol);
1756 tcc_add_pragma_libs(s1);
1758 if (0 == s1->nostdlib) {
1759 static const char *libs[] = {
1760 "tcc1", "msvcrt", "kernel32", "", "user32", "gdi32", NULL
1762 const char **pp, *p;
1763 for (pp = libs; 0 != (p = *pp); ++pp) {
1764 if (0 == *p) {
1765 if (PE_DLL != pe_type && PE_GUI != pe_type)
1766 break;
1767 } else if (tcc_add_library_err(s1, p) < 0) {
1768 break;
1773 if (TCC_OUTPUT_MEMORY == s1->output_type) {
1774 pe_type = PE_RUN;
1775 #ifdef TCC_IS_NATIVE
1776 s1->runtime_main = start_symbol;
1777 #endif
1778 } else {
1779 pe->start_addr = (DWORD)(uintptr_t)tcc_get_symbol_err(s1, start_symbol);
1782 pe->type = pe_type;
1785 ST_FUNC int pe_output_file(TCCState * s1, const char *filename)
1787 int ret;
1788 struct pe_info pe;
1789 int i;
1791 memset(&pe, 0, sizeof pe);
1792 pe.filename = filename;
1793 pe.s1 = s1;
1795 pe_add_runtime(s1, &pe);
1796 tcc_add_bcheck(s1);
1797 relocate_common_syms(); /* assign bss adresses */
1798 tcc_add_linker_symbols(s1);
1800 ret = pe_check_symbols(&pe);
1801 if (ret)
1803 else if (filename) {
1804 if (PE_DLL == pe.type) {
1805 pe.reloc = new_section(pe.s1, ".reloc", SHT_PROGBITS, 0);
1806 /* XXX: check if is correct for arm-pe target */
1807 pe.imagebase = 0x10000000;
1808 } else {
1809 #if defined(TCC_TARGET_ARM)
1810 pe.imagebase = 0x00010000;
1811 #else
1812 pe.imagebase = 0x00400000;
1813 #endif
1816 #if defined(TCC_TARGET_ARM)
1817 /* we use "console" subsystem by default */
1818 pe.subsystem = 9;
1819 #else
1820 if (PE_DLL == pe.type || PE_GUI == pe.type)
1821 pe.subsystem = 2;
1822 else
1823 pe.subsystem = 3;
1824 #endif
1825 /* Allow override via -Wl,-subsystem=... option */
1826 if (s1->pe_subsystem != 0)
1827 pe.subsystem = s1->pe_subsystem;
1829 /* set default file/section alignment */
1830 if (pe.subsystem == 1) {
1831 pe.section_align = 0x20;
1832 pe.file_align = 0x20;
1833 } else {
1834 pe.section_align = 0x1000;
1835 pe.file_align = 0x200;
1838 if (s1->section_align != 0)
1839 pe.section_align = s1->section_align;
1840 if (s1->pe_file_align != 0)
1841 pe.file_align = s1->pe_file_align;
1843 if ((pe.subsystem >= 10) && (pe.subsystem <= 12))
1844 pe.imagebase = 0;
1846 if (s1->has_text_addr)
1847 pe.imagebase = s1->text_addr;
1849 pe_assign_addresses(&pe);
1850 relocate_syms(s1, 0);
1851 for (i = 1; i < s1->nb_sections; ++i) {
1852 Section *s = s1->sections[i];
1853 if (s->reloc) {
1854 relocate_section(s1, s);
1855 pe_relocate_rva(&pe, s);
1858 if (s1->nb_errors)
1859 ret = -1;
1860 else
1861 ret = pe_write(&pe);
1862 tcc_free(pe.sec_info);
1863 } else {
1864 #ifdef TCC_IS_NATIVE
1865 pe.thunk = data_section;
1866 pe_build_imports(&pe);
1867 #endif
1870 #ifdef PE_PRINT_SECTIONS
1871 pe_print_sections(s1, "tcc.log");
1872 #endif
1873 return ret;
1876 /* ------------------------------------------------------------- */