Removed the error message and minor changes.
[tinycc.git] / libtcc.c
1 /*
2 * TCC - Tiny C Compiler
3 *
4 * Copyright (c) 2001-2004 Fabrice Bellard
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 /********************************************************/
24 /* global variables */
25
26 /* use GNU C extensions */
27 ST_DATA int gnu_ext = 1;
28
29 /* use TinyCC extensions */
30 ST_DATA int tcc_ext = 1;
31
32 /* XXX: get rid of this ASAP */
33 ST_DATA struct TCCState *tcc_state;
34
35 /********************************************************/
36
37 #ifdef ONE_SOURCE
38 #include "tccpp.c"
39 #include "tccgen.c"
40 #include "tccelf.c"
41 #include "tccrun.c"
42 #ifdef TCC_TARGET_I386
43 #include "i386-gen.c"
44 #endif
45 #ifdef TCC_TARGET_ARM
46 #include "arm-gen.c"
47 #endif
48 #ifdef TCC_TARGET_C67
49 #include "c67-gen.c"
50 #endif
51 #ifdef TCC_TARGET_X86_64
52 #include "x86_64-gen.c"
53 #endif
54 #ifdef CONFIG_TCC_ASM
55 #include "tccasm.c"
56 #if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64
57 #include "i386-asm.c"
58 #endif
59 #endif
60 #ifdef TCC_TARGET_COFF
61 #include "tcccoff.c"
62 #endif
63 #ifdef TCC_TARGET_PE
64 #include "tccpe.c"
65 #endif
66 #endif /* ONE_SOURCE */
67
68 /********************************************************/
69 #ifndef CONFIG_TCC_ASM
70 ST_FUNC void asm_instr(void)
71 {
72 tcc_error("inline asm() not supported");
73 }
74 ST_FUNC void asm_global_instr(void)
75 {
76 tcc_error("inline asm() not supported");
77 }
78 #endif
79
80 /********************************************************/
81 #ifdef _WIN32
82 static char *normalize_slashes(char *path)
83 {
84 char *p;
85 for (p = path; *p; ++p)
86 if (*p == '\\')
87 *p = '/';
88 return path;
89 }
90
91 static HMODULE tcc_module;
92
93 /* on win32, we suppose the lib and includes are at the location of 'tcc.exe' */
94 static void tcc_set_lib_path_w32(TCCState *s)
95 {
96 char path[1024], *p;
97 GetModuleFileNameA(tcc_module, path, sizeof path);
98 p = tcc_basename(normalize_slashes(strlwr(path)));
99 if (p - 5 > path && 0 == strncmp(p - 5, "/bin/", 5))
100 p -= 5;
101 else if (p > path)
102 p--;
103 *p = 0;
104 tcc_set_lib_path(s, path);
105 }
106
107 #ifdef TCC_TARGET_PE
108 static void tcc_add_systemdir(TCCState *s)
109 {
110 char buf[1000];
111 GetSystemDirectory(buf, sizeof buf);
112 tcc_add_library_path(s, normalize_slashes(buf));
113 }
114 #endif
115
116 #ifndef CONFIG_TCC_STATIC
117 void dlclose(void *p)
118 {
119 FreeLibrary((HMODULE)p);
120 }
121 #endif
122
123 #ifdef LIBTCC_AS_DLL
124 BOOL WINAPI DllMain (HINSTANCE hDll, DWORD dwReason, LPVOID lpReserved)
125 {
126 if (DLL_PROCESS_ATTACH == dwReason)
127 tcc_module = hDll;
128 return TRUE;
129 }
130 #endif
131 #endif
132
133 /********************************************************/
134 /* copy a string and truncate it. */
135 PUB_FUNC char *pstrcpy(char *buf, int buf_size, const char *s)
136 {
137 char *q, *q_end;
138 int c;
139
140 if (buf_size > 0) {
141 q = buf;
142 q_end = buf + buf_size - 1;
143 while (q < q_end) {
144 c = *s++;
145 if (c == '\0')
146 break;
147 *q++ = c;
148 }
149 *q = '\0';
150 }
151 return buf;
152 }
153
154 /* strcat and truncate. */
155 PUB_FUNC char *pstrcat(char *buf, int buf_size, const char *s)
156 {
157 int len;
158 len = strlen(buf);
159 if (len < buf_size)
160 pstrcpy(buf + len, buf_size - len, s);
161 return buf;
162 }
163
164 PUB_FUNC char *pstrncpy(char *out, const char *in, size_t num)
165 {
166 memcpy(out, in, num);
167 out[num] = '\0';
168 return out;
169 }
170
171 /* extract the basename of a file */
172 PUB_FUNC char *tcc_basename(const char *name)
173 {
174 char *p = strchr(name, 0);
175 while (p > name && !IS_DIRSEP(p[-1]))
176 --p;
177 return p;
178 }
179
180 /* extract extension part of a file
181 *
182 * (if no extension, return pointer to end-of-string)
183 */
184 PUB_FUNC char *tcc_fileextension (const char *name)
185 {
186 char *b = tcc_basename(name);
187 char *e = strrchr(b, '.');
188 return e ? e : strchr(b, 0);
189 }
190
191 /********************************************************/
192 /* memory management */
193
194 #undef free
195 #undef malloc
196 #undef realloc
197
198 #ifdef MEM_DEBUG
199 ST_DATA int mem_cur_size;
200 ST_DATA int mem_max_size;
201 unsigned malloc_usable_size(void*);
202 #endif
203
204 PUB_FUNC void tcc_free(void *ptr)
205 {
206 #ifdef MEM_DEBUG
207 mem_cur_size -= malloc_usable_size(ptr);
208 #endif
209 free(ptr);
210 }
211
212 PUB_FUNC void *tcc_malloc(unsigned long size)
213 {
214 void *ptr;
215 ptr = malloc(size);
216 if (!ptr && size)
217 tcc_error("memory full (malloc)");
218 #ifdef MEM_DEBUG
219 mem_cur_size += malloc_usable_size(ptr);
220 if (mem_cur_size > mem_max_size)
221 mem_max_size = mem_cur_size;
222 #endif
223 return ptr;
224 }
225
226 PUB_FUNC void *tcc_mallocz(unsigned long size)
227 {
228 void *ptr;
229 ptr = tcc_malloc(size);
230 memset(ptr, 0, size);
231 return ptr;
232 }
233
234 PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size)
235 {
236 void *ptr1;
237 #ifdef MEM_DEBUG
238 mem_cur_size -= malloc_usable_size(ptr);
239 #endif
240 ptr1 = realloc(ptr, size);
241 if (!ptr1 && size)
242 tcc_error("memory full (realloc)");
243 #ifdef MEM_DEBUG
244 /* NOTE: count not correct if alloc error, but not critical */
245 mem_cur_size += malloc_usable_size(ptr1);
246 if (mem_cur_size > mem_max_size)
247 mem_max_size = mem_cur_size;
248 #endif
249 return ptr1;
250 }
251
252 PUB_FUNC char *tcc_strdup(const char *str)
253 {
254 char *ptr;
255 ptr = tcc_malloc(strlen(str) + 1);
256 strcpy(ptr, str);
257 return ptr;
258 }
259
260 PUB_FUNC void tcc_memstats(void)
261 {
262 #ifdef MEM_DEBUG
263 printf("memory: %d bytes, max = %d bytes\n", mem_cur_size, mem_max_size);
264 #endif
265 }
266
267 #define free(p) use_tcc_free(p)
268 #define malloc(s) use_tcc_malloc(s)
269 #define realloc(p, s) use_tcc_realloc(p, s)
270
271 /********************************************************/
272 /* dynarrays */
273
274 ST_FUNC void dynarray_add(void ***ptab, int *nb_ptr, void *data)
275 {
276 int nb, nb_alloc;
277 void **pp;
278
279 nb = *nb_ptr;
280 pp = *ptab;
281 /* every power of two we double array size */
282 if ((nb & (nb - 1)) == 0) {
283 if (!nb)
284 nb_alloc = 1;
285 else
286 nb_alloc = nb * 2;
287 pp = tcc_realloc(pp, nb_alloc * sizeof(void *));
288 *ptab = pp;
289 }
290 pp[nb++] = data;
291 *nb_ptr = nb;
292 }
293
294 ST_FUNC void dynarray_reset(void *pp, int *n)
295 {
296 void **p;
297 for (p = *(void***)pp; *n; ++p, --*n)
298 if (*p)
299 tcc_free(*p);
300 tcc_free(*(void**)pp);
301 *(void**)pp = NULL;
302 }
303
304 static void tcc_split_path(TCCState *s, void ***p_ary, int *p_nb_ary, const char *in)
305 {
306 const char *p;
307 do {
308 int c;
309 CString str;
310
311 cstr_new(&str);
312 for (p = in; c = *p, c != '\0' && c != PATHSEP; ++p) {
313 if (c == '{' && p[1] && p[2] == '}') {
314 c = p[1], p += 2;
315 if (c == 'B')
316 cstr_cat(&str, s->tcc_lib_path);
317 } else {
318 cstr_ccat(&str, c);
319 }
320 }
321 cstr_ccat(&str, '\0');
322 dynarray_add(p_ary, p_nb_ary, str.data);
323 in = p+1;
324 } while (*p);
325 }
326
327 /********************************************************/
328
329 ST_FUNC Section *new_section(TCCState *s1, const char *name, int sh_type, int sh_flags)
330 {
331 Section *sec;
332
333 sec = tcc_mallocz(sizeof(Section) + strlen(name));
334 strcpy(sec->name, name);
335 sec->sh_type = sh_type;
336 sec->sh_flags = sh_flags;
337 switch(sh_type) {
338 case SHT_HASH:
339 case SHT_REL:
340 case SHT_RELA:
341 case SHT_DYNSYM:
342 case SHT_SYMTAB:
343 case SHT_DYNAMIC:
344 sec->sh_addralign = 4;
345 break;
346 case SHT_STRTAB:
347 sec->sh_addralign = 1;
348 break;
349 default:
350 sec->sh_addralign = 32; /* default conservative alignment */
351 break;
352 }
353
354 if (sh_flags & SHF_PRIVATE) {
355 dynarray_add((void ***)&s1->priv_sections, &s1->nb_priv_sections, sec);
356 } else {
357 sec->sh_num = s1->nb_sections;
358 dynarray_add((void ***)&s1->sections, &s1->nb_sections, sec);
359 }
360
361 return sec;
362 }
363
364 static void free_section(Section *s)
365 {
366 tcc_free(s->data);
367 }
368
369 /* realloc section and set its content to zero */
370 ST_FUNC void section_realloc(Section *sec, unsigned long new_size)
371 {
372 unsigned long size;
373 unsigned char *data;
374
375 size = sec->data_allocated;
376 if (size == 0)
377 size = 1;
378 while (size < new_size)
379 size = size * 2;
380 data = tcc_realloc(sec->data, size);
381 memset(data + sec->data_allocated, 0, size - sec->data_allocated);
382 sec->data = data;
383 sec->data_allocated = size;
384 }
385
386 /* reserve at least 'size' bytes in section 'sec' from
387 sec->data_offset. */
388 ST_FUNC void *section_ptr_add(Section *sec, unsigned long size)
389 {
390 unsigned long offset, offset1;
391
392 offset = sec->data_offset;
393 offset1 = offset + size;
394 if (offset1 > sec->data_allocated)
395 section_realloc(sec, offset1);
396 sec->data_offset = offset1;
397 return sec->data + offset;
398 }
399
400 /* reserve at least 'size' bytes from section start */
401 ST_FUNC void section_reserve(Section *sec, unsigned long size)
402 {
403 if (size > sec->data_allocated)
404 section_realloc(sec, size);
405 if (size > sec->data_offset)
406 sec->data_offset = size;
407 }
408
409 /* return a reference to a section, and create it if it does not
410 exists */
411 ST_FUNC Section *find_section(TCCState *s1, const char *name)
412 {
413 Section *sec;
414 int i;
415 for(i = 1; i < s1->nb_sections; i++) {
416 sec = s1->sections[i];
417 if (!strcmp(name, sec->name))
418 return sec;
419 }
420 /* sections are created as PROGBITS */
421 return new_section(s1, name, SHT_PROGBITS, SHF_ALLOC);
422 }
423
424 /* update sym->c so that it points to an external symbol in section
425 'section' with value 'value' */
426 ST_FUNC void put_extern_sym2(Sym *sym, Section *section,
427 addr_t value, unsigned long size,
428 int can_add_underscore)
429 {
430 int sym_type, sym_bind, sh_num, info, other;
431 ElfW(Sym) *esym;
432 const char *name;
433 char buf1[256];
434
435 if (section == NULL)
436 sh_num = SHN_UNDEF;
437 else if (section == SECTION_ABS)
438 sh_num = SHN_ABS;
439 else
440 sh_num = section->sh_num;
441
442 if ((sym->type.t & VT_BTYPE) == VT_FUNC) {
443 sym_type = STT_FUNC;
444 } else if ((sym->type.t & VT_BTYPE) == VT_VOID) {
445 sym_type = STT_NOTYPE;
446 } else {
447 sym_type = STT_OBJECT;
448 }
449
450 if (sym->type.t & VT_STATIC)
451 sym_bind = STB_LOCAL;
452 else {
453 if (sym->type.t & VT_WEAK)
454 sym_bind = STB_WEAK;
455 else
456 sym_bind = STB_GLOBAL;
457 }
458
459 if (!sym->c) {
460 name = get_tok_str(sym->v, NULL);
461 #ifdef CONFIG_TCC_BCHECK
462 if (tcc_state->do_bounds_check) {
463 char buf[32];
464
465 /* XXX: avoid doing that for statics ? */
466 /* if bound checking is activated, we change some function
467 names by adding the "__bound" prefix */
468 switch(sym->v) {
469 #ifdef TCC_TARGET_PE
470 /* XXX: we rely only on malloc hooks */
471 case TOK_malloc:
472 case TOK_free:
473 case TOK_realloc:
474 case TOK_memalign:
475 case TOK_calloc:
476 #endif
477 case TOK_memcpy:
478 case TOK_memmove:
479 case TOK_memset:
480 case TOK_strlen:
481 case TOK_strcpy:
482 case TOK_alloca:
483 strcpy(buf, "__bound_");
484 strcat(buf, name);
485 name = buf;
486 break;
487 }
488 }
489 #endif
490 other = 0;
491
492 #ifdef TCC_TARGET_PE
493 if (sym->type.t & VT_EXPORT)
494 other |= ST_PE_EXPORT;
495 if (sym_type == STT_FUNC && sym->type.ref) {
496 Sym *ref = sym->type.ref;
497 if (ref->a.func_export)
498 other |= ST_PE_EXPORT;
499 if (ref->a.func_call == FUNC_STDCALL && can_add_underscore) {
500 sprintf(buf1, "_%s@%d", name, ref->a.func_args * PTR_SIZE);
501 name = buf1;
502 other |= ST_PE_STDCALL;
503 can_add_underscore = 0;
504 }
505 } else {
506 if (find_elf_sym(tcc_state->dynsymtab_section, name))
507 other |= ST_PE_IMPORT;
508 if (sym->type.t & VT_IMPORT)
509 other |= ST_PE_IMPORT;
510 }
511 #else
512 if (! (sym->type.t & VT_STATIC))
513 other = (sym->type.t & VT_VIS_MASK) >> VT_VIS_SHIFT;
514 #endif
515 if (tcc_state->leading_underscore && can_add_underscore) {
516 buf1[0] = '_';
517 pstrcpy(buf1 + 1, sizeof(buf1) - 1, name);
518 name = buf1;
519 }
520 if (sym->asm_label) {
521 name = sym->asm_label;
522 }
523 info = ELFW(ST_INFO)(sym_bind, sym_type);
524 sym->c = add_elf_sym(symtab_section, value, size, info, other, sh_num, name);
525 } else {
526 esym = &((ElfW(Sym) *)symtab_section->data)[sym->c];
527 esym->st_value = value;
528 esym->st_size = size;
529 esym->st_shndx = sh_num;
530 }
531 }
532
533 ST_FUNC void put_extern_sym(Sym *sym, Section *section,
534 addr_t value, unsigned long size)
535 {
536 put_extern_sym2(sym, section, value, size, 1);
537 }
538
539 /* add a new relocation entry to symbol 'sym' in section 's' */
540 ST_FUNC void greloc(Section *s, Sym *sym, unsigned long offset, int type)
541 {
542 int c = 0;
543 if (sym) {
544 if (0 == sym->c)
545 put_extern_sym(sym, NULL, 0, 0);
546 c = sym->c;
547 }
548 /* now we can add ELF relocation info */
549 put_elf_reloc(symtab_section, s, offset, type, c);
550 }
551
552 /********************************************************/
553
554 static void strcat_vprintf(char *buf, int buf_size, const char *fmt, va_list ap)
555 {
556 int len;
557 len = strlen(buf);
558 vsnprintf(buf + len, buf_size - len, fmt, ap);
559 }
560
561 static void strcat_printf(char *buf, int buf_size, const char *fmt, ...)
562 {
563 va_list ap;
564 va_start(ap, fmt);
565 strcat_vprintf(buf, buf_size, fmt, ap);
566 va_end(ap);
567 }
568
569 static void error1(TCCState *s1, int is_warning, const char *fmt, va_list ap)
570 {
571 char buf[2048];
572 BufferedFile **pf, *f;
573
574 buf[0] = '\0';
575 /* use upper file if inline ":asm:" or token ":paste:" */
576 for (f = file; f && f->filename[0] == ':'; f = f->prev)
577 ;
578 if (f) {
579 for(pf = s1->include_stack; pf < s1->include_stack_ptr; pf++)
580 strcat_printf(buf, sizeof(buf), "In file included from %s:%d:\n",
581 (*pf)->filename, (*pf)->line_num);
582 if (f->line_num > 0) {
583 strcat_printf(buf, sizeof(buf), "%s:%d: ",
584 f->filename, f->line_num);
585 } else {
586 strcat_printf(buf, sizeof(buf), "%s: ",
587 f->filename);
588 }
589 } else {
590 strcat_printf(buf, sizeof(buf), "tcc: ");
591 }
592 if (is_warning)
593 strcat_printf(buf, sizeof(buf), "warning: ");
594 else
595 strcat_printf(buf, sizeof(buf), "error: ");
596 strcat_vprintf(buf, sizeof(buf), fmt, ap);
597
598 if (!s1->error_func) {
599 /* default case: stderr */
600 fprintf(stderr, "%s\n", buf);
601 } else {
602 s1->error_func(s1->error_opaque, buf);
603 }
604 if (!is_warning || s1->warn_error)
605 s1->nb_errors++;
606 }
607
608 LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque,
609 void (*error_func)(void *opaque, const char *msg))
610 {
611 s->error_opaque = error_opaque;
612 s->error_func = error_func;
613 }
614
615 /* error without aborting current compilation */
616 PUB_FUNC void tcc_error_noabort(const char *fmt, ...)
617 {
618 TCCState *s1 = tcc_state;
619 va_list ap;
620
621 va_start(ap, fmt);
622 error1(s1, 0, fmt, ap);
623 va_end(ap);
624 }
625
626 PUB_FUNC void tcc_error(const char *fmt, ...)
627 {
628 TCCState *s1 = tcc_state;
629 va_list ap;
630
631 va_start(ap, fmt);
632 error1(s1, 0, fmt, ap);
633 va_end(ap);
634 /* better than nothing: in some cases, we accept to handle errors */
635 if (s1->error_set_jmp_enabled) {
636 longjmp(s1->error_jmp_buf, 1);
637 } else {
638 /* XXX: eliminate this someday */
639 exit(1);
640 }
641 }
642
643 PUB_FUNC void tcc_warning(const char *fmt, ...)
644 {
645 TCCState *s1 = tcc_state;
646 va_list ap;
647
648 if (s1->warn_none)
649 return;
650
651 va_start(ap, fmt);
652 error1(s1, 1, fmt, ap);
653 va_end(ap);
654 }
655
656 /********************************************************/
657 /* I/O layer */
658
659 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen)
660 {
661 BufferedFile *bf;
662 int buflen = initlen ? initlen : IO_BUF_SIZE;
663
664 bf = tcc_malloc(sizeof(BufferedFile) + buflen);
665 bf->buf_ptr = bf->buffer;
666 bf->buf_end = bf->buffer + initlen;
667 bf->buf_end[0] = CH_EOB; /* put eob symbol */
668 pstrcpy(bf->filename, sizeof(bf->filename), filename);
669 #ifdef _WIN32
670 normalize_slashes(bf->filename);
671 #endif
672 bf->line_num = 1;
673 bf->ifndef_macro = 0;
674 bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
675 bf->fd = -1;
676 bf->prev = file;
677 file = bf;
678 }
679
680 ST_FUNC void tcc_close(void)
681 {
682 BufferedFile *bf = file;
683 if (bf->fd > 0) {
684 close(bf->fd);
685 total_lines += bf->line_num;
686 }
687 file = bf->prev;
688 tcc_free(bf);
689 }
690
691 ST_FUNC int tcc_open(TCCState *s1, const char *filename)
692 {
693 int fd;
694 if (strcmp(filename, "-") == 0)
695 fd = 0, filename = "stdin";
696 else
697 fd = open(filename, O_RDONLY | O_BINARY);
698 if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3)
699 printf("%s %*s%s\n", fd < 0 ? "nf":"->",
700 (int)(s1->include_stack_ptr - s1->include_stack), "", filename);
701 if (fd < 0)
702 return -1;
703
704 tcc_open_bf(s1, filename, 0);
705 file->fd = fd;
706 return fd;
707 }
708
709 /* compile the C file opened in 'file'. Return non zero if errors. */
710 static int tcc_compile(TCCState *s1)
711 {
712 Sym *define_start;
713 SValue *pvtop;
714 char buf[512];
715 volatile int section_sym;
716
717 #ifdef INC_DEBUG
718 printf("%s: **** new file\n", file->filename);
719 #endif
720 preprocess_init(s1);
721
722 cur_text_section = NULL;
723 funcname = "";
724 anon_sym = SYM_FIRST_ANOM;
725
726 /* file info: full path + filename */
727 section_sym = 0; /* avoid warning */
728 if (s1->do_debug) {
729 section_sym = put_elf_sym(symtab_section, 0, 0,
730 ELFW(ST_INFO)(STB_LOCAL, STT_SECTION), 0,
731 text_section->sh_num, NULL);
732 getcwd(buf, sizeof(buf));
733 #ifdef _WIN32
734 normalize_slashes(buf);
735 #endif
736 pstrcat(buf, sizeof(buf), "/");
737 put_stabs_r(buf, N_SO, 0, 0,
738 text_section->data_offset, text_section, section_sym);
739 put_stabs_r(file->filename, N_SO, 0, 0,
740 text_section->data_offset, text_section, section_sym);
741 }
742 /* an elf symbol of type STT_FILE must be put so that STB_LOCAL
743 symbols can be safely used */
744 put_elf_sym(symtab_section, 0, 0,
745 ELFW(ST_INFO)(STB_LOCAL, STT_FILE), 0,
746 SHN_ABS, file->filename);
747
748 /* define some often used types */
749 int_type.t = VT_INT;
750
751 char_pointer_type.t = VT_BYTE;
752 mk_pointer(&char_pointer_type);
753
754 #if PTR_SIZE == 4
755 size_type.t = VT_INT;
756 #else
757 size_type.t = VT_LLONG;
758 #endif
759
760 func_old_type.t = VT_FUNC;
761 func_old_type.ref = sym_push(SYM_FIELD, &int_type, FUNC_CDECL, FUNC_OLD);
762 #ifdef TCC_TARGET_ARM
763 arm_init(s1);
764 #endif
765
766 #if 0
767 /* define 'void *alloca(unsigned int)' builtin function */
768 {
769 Sym *s1;
770
771 p = anon_sym++;
772 sym = sym_push(p, mk_pointer(VT_VOID), FUNC_CDECL, FUNC_NEW);
773 s1 = sym_push(SYM_FIELD, VT_UNSIGNED | VT_INT, 0, 0);
774 s1->next = NULL;
775 sym->next = s1;
776 sym_push(TOK_alloca, VT_FUNC | (p << VT_STRUCT_SHIFT), VT_CONST, 0);
777 }
778 #endif
779
780 define_start = define_stack;
781 nocode_wanted = 1;
782
783 if (setjmp(s1->error_jmp_buf) == 0) {
784 s1->nb_errors = 0;
785 s1->error_set_jmp_enabled = 1;
786
787 ch = file->buf_ptr[0];
788 tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
789 parse_flags = PARSE_FLAG_PREPROCESS | PARSE_FLAG_TOK_NUM;
790 pvtop = vtop;
791 next();
792 decl(VT_CONST);
793 if (tok != TOK_EOF)
794 expect("declaration");
795 if (pvtop != vtop)
796 tcc_warning("internal compiler error: vstack leak? (%d)", vtop - pvtop);
797
798 /* end of translation unit info */
799 if (s1->do_debug) {
800 put_stabs_r(NULL, N_SO, 0, 0,
801 text_section->data_offset, text_section, section_sym);
802 }
803 }
804
805 s1->error_set_jmp_enabled = 0;
806
807 /* reset define stack, but leave -Dsymbols (may be incorrect if
808 they are undefined) */
809 free_defines(define_start);
810
811 gen_inline_functions();
812
813 sym_pop(&global_stack, NULL);
814 sym_pop(&local_stack, NULL);
815
816 return s1->nb_errors != 0 ? -1 : 0;
817 }
818
819 LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
820 {
821 int len, ret;
822 len = strlen(str);
823
824 tcc_open_bf(s, "<string>", len);
825 memcpy(file->buffer, str, len);
826 ret = tcc_compile(s);
827 tcc_close();
828 return ret;
829 }
830
831 /* define a preprocessor symbol. A value can also be provided with the '=' operator */
832 LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value)
833 {
834 int len1, len2;
835 /* default value */
836 if (!value)
837 value = "1";
838 len1 = strlen(sym);
839 len2 = strlen(value);
840
841 /* init file structure */
842 tcc_open_bf(s1, "<define>", len1 + len2 + 1);
843 memcpy(file->buffer, sym, len1);
844 file->buffer[len1] = ' ';
845 memcpy(file->buffer + len1 + 1, value, len2);
846
847 /* parse with define parser */
848 ch = file->buf_ptr[0];
849 next_nomacro();
850 parse_define();
851
852 tcc_close();
853 }
854
855 /* undefine a preprocessor symbol */
856 LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
857 {
858 TokenSym *ts;
859 Sym *s;
860 ts = tok_alloc(sym, strlen(sym));
861 s = define_find(ts->tok);
862 /* undefine symbol by putting an invalid name */
863 if (s)
864 define_undef(s);
865 }
866
867 /* cleanup all static data used during compilation */
868 static void tcc_cleanup(void)
869 {
870 int i, n;
871 if (NULL == tcc_state)
872 return;
873 tcc_state = NULL;
874
875 /* free -D defines */
876 free_defines(NULL);
877
878 /* free tokens */
879 n = tok_ident - TOK_IDENT;
880 for(i = 0; i < n; i++)
881 tcc_free(table_ident[i]);
882 tcc_free(table_ident);
883
884 /* free sym_pools */
885 dynarray_reset(&sym_pools, &nb_sym_pools);
886 /* string buffer */
887 cstr_free(&tokcstr);
888 /* reset symbol stack */
889 sym_free_first = NULL;
890 /* cleanup from error/setjmp */
891 macro_ptr = NULL;
892 }
893
894 LIBTCCAPI TCCState *tcc_new(void)
895 {
896 TCCState *s;
897 char buffer[100];
898 int a,b,c;
899
900 tcc_cleanup();
901
902 s = tcc_mallocz(sizeof(TCCState));
903 if (!s)
904 return NULL;
905 tcc_state = s;
906 #ifdef _WIN32
907 tcc_set_lib_path_w32(s);
908 #else
909 tcc_set_lib_path(s, CONFIG_TCCDIR);
910 #endif
911 s->output_type = TCC_OUTPUT_MEMORY;
912 preprocess_new();
913 s->include_stack_ptr = s->include_stack;
914
915 /* we add dummy defines for some special macros to speed up tests
916 and to have working defined() */
917 define_push(TOK___LINE__, MACRO_OBJ, NULL, NULL);
918 define_push(TOK___FILE__, MACRO_OBJ, NULL, NULL);
919 define_push(TOK___DATE__, MACRO_OBJ, NULL, NULL);
920 define_push(TOK___TIME__, MACRO_OBJ, NULL, NULL);
921
922 /* define __TINYC__ 92X */
923 sscanf(TCC_VERSION, "%d.%d.%d", &a, &b, &c);
924 sprintf(buffer, "%d", a*10000 + b*100 + c);
925 tcc_define_symbol(s, "__TINYC__", buffer);
926
927 /* standard defines */
928 tcc_define_symbol(s, "__STDC__", NULL);
929 tcc_define_symbol(s, "__STDC_VERSION__", "199901L");
930 tcc_define_symbol(s, "__STDC_HOSTED__", NULL);
931
932 /* target defines */
933 #if defined(TCC_TARGET_I386)
934 tcc_define_symbol(s, "__i386__", NULL);
935 tcc_define_symbol(s, "__i386", NULL);
936 tcc_define_symbol(s, "i386", NULL);
937 #elif defined(TCC_TARGET_X86_64)
938 tcc_define_symbol(s, "__x86_64__", NULL);
939 #elif defined(TCC_TARGET_ARM)
940 tcc_define_symbol(s, "__ARM_ARCH_4__", NULL);
941 tcc_define_symbol(s, "__arm_elf__", NULL);
942 tcc_define_symbol(s, "__arm_elf", NULL);
943 tcc_define_symbol(s, "arm_elf", NULL);
944 tcc_define_symbol(s, "__arm__", NULL);
945 tcc_define_symbol(s, "__arm", NULL);
946 tcc_define_symbol(s, "arm", NULL);
947 tcc_define_symbol(s, "__APCS_32__", NULL);
948 tcc_define_symbol(s, "__ARMEL__", NULL);
949 #if defined(TCC_ARM_EABI)
950 tcc_define_symbol(s, "__ARM_EABI__", NULL);
951 #endif
952 #if defined(TCC_ARM_HARDFLOAT)
953 s->float_abi = ARM_HARD_FLOAT;
954 tcc_define_symbol(s, "__ARM_PCS_VFP", NULL);
955 #else
956 s->float_abi = ARM_SOFTFP_FLOAT;
957 #endif
958 #endif
959
960 #ifdef TCC_TARGET_PE
961 tcc_define_symbol(s, "_WIN32", NULL);
962 # ifdef TCC_TARGET_X86_64
963 tcc_define_symbol(s, "_WIN64", NULL);
964 # endif
965 #else
966 tcc_define_symbol(s, "__unix__", NULL);
967 tcc_define_symbol(s, "__unix", NULL);
968 tcc_define_symbol(s, "unix", NULL);
969 # if defined(__linux)
970 tcc_define_symbol(s, "__linux__", NULL);
971 tcc_define_symbol(s, "__linux", NULL);
972 # endif
973 # if defined(__FreeBSD__)
974 # define str(s) #s
975 tcc_define_symbol(s, "__FreeBSD__", str( __FreeBSD__));
976 # undef str
977 # endif
978 # if defined(__FreeBSD_kernel__)
979 tcc_define_symbol(s, "__FreeBSD_kernel__", NULL);
980 # endif
981 #endif
982
983 /* TinyCC & gcc defines */
984 #if defined TCC_TARGET_PE && defined TCC_TARGET_X86_64
985 tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long");
986 tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long");
987 #else
988 tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
989 tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
990 #endif
991
992 #ifdef TCC_TARGET_PE
993 tcc_define_symbol(s, "__WCHAR_TYPE__", "unsigned short");
994 tcc_define_symbol(s, "__WINT_TYPE__", "unsigned short");
995 #else
996 tcc_define_symbol(s, "__WCHAR_TYPE__", "int");
997 /* wint_t is unsigned int by default, but (signed) int on BSDs
998 and unsigned short on windows. Other OSes might have still
999 other conventions, sigh. */
1000 #if defined(__FreeBSD__) || defined (__FreeBSD_kernel__)
1001 tcc_define_symbol(s, "__WINT_TYPE__", "int");
1002 #else
1003 tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int");
1004 #endif
1005 #endif
1006
1007 #ifndef TCC_TARGET_PE
1008 /* glibc defines */
1009 tcc_define_symbol(s, "__REDIRECT(name, proto, alias)", "name proto __asm__ (#alias)");
1010 tcc_define_symbol(s, "__REDIRECT_NTH(name, proto, alias)", "name proto __asm__ (#alias) __THROW");
1011 /* paths for crt objects */
1012 tcc_split_path(s, (void ***)&s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX);
1013 #endif
1014
1015 /* no section zero */
1016 dynarray_add((void ***)&s->sections, &s->nb_sections, NULL);
1017
1018 /* create standard sections */
1019 text_section = new_section(s, ".text", SHT_PROGBITS, SHF_ALLOC | SHF_EXECINSTR);
1020 data_section = new_section(s, ".data", SHT_PROGBITS, SHF_ALLOC | SHF_WRITE);
1021 bss_section = new_section(s, ".bss", SHT_NOBITS, SHF_ALLOC | SHF_WRITE);
1022
1023 /* symbols are always generated for linking stage */
1024 symtab_section = new_symtab(s, ".symtab", SHT_SYMTAB, 0,
1025 ".strtab",
1026 ".hashtab", SHF_PRIVATE);
1027 strtab_section = symtab_section->link;
1028 s->symtab = symtab_section;
1029
1030 /* private symbol table for dynamic symbols */
1031 s->dynsymtab_section = new_symtab(s, ".dynsymtab", SHT_SYMTAB, SHF_PRIVATE,
1032 ".dynstrtab",
1033 ".dynhashtab", SHF_PRIVATE);
1034 s->alacarte_link = 1;
1035 s->nocommon = 1;
1036
1037 #ifdef CHAR_IS_UNSIGNED
1038 s->char_is_unsigned = 1;
1039 #endif
1040 /* enable this if you want symbols with leading underscore on windows: */
1041 #if 0 /* def TCC_TARGET_PE */
1042 s->leading_underscore = 1;
1043 #endif
1044 #ifdef TCC_TARGET_I386
1045 s->seg_size = 32;
1046 #endif
1047 #ifdef TCC_IS_NATIVE
1048 s->runtime_main = "main";
1049 #endif
1050 return s;
1051 }
1052
1053 LIBTCCAPI void tcc_delete(TCCState *s1)
1054 {
1055 int i;
1056
1057 tcc_cleanup();
1058
1059 /* free all sections */
1060 for(i = 1; i < s1->nb_sections; i++)
1061 free_section(s1->sections[i]);
1062 dynarray_reset(&s1->sections, &s1->nb_sections);
1063
1064 for(i = 0; i < s1->nb_priv_sections; i++)
1065 free_section(s1->priv_sections[i]);
1066 dynarray_reset(&s1->priv_sections, &s1->nb_priv_sections);
1067
1068 /* free any loaded DLLs */
1069 #ifdef TCC_IS_NATIVE
1070 for ( i = 0; i < s1->nb_loaded_dlls; i++) {
1071 DLLReference *ref = s1->loaded_dlls[i];
1072 if ( ref->handle )
1073 dlclose(ref->handle);
1074 }
1075 #endif
1076
1077 /* free loaded dlls array */
1078 dynarray_reset(&s1->loaded_dlls, &s1->nb_loaded_dlls);
1079
1080 /* free library paths */
1081 dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
1082 dynarray_reset(&s1->crt_paths, &s1->nb_crt_paths);
1083
1084 /* free include paths */
1085 dynarray_reset(&s1->cached_includes, &s1->nb_cached_includes);
1086 dynarray_reset(&s1->include_paths, &s1->nb_include_paths);
1087 dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths);
1088
1089 tcc_free(s1->tcc_lib_path);
1090 tcc_free(s1->soname);
1091 tcc_free(s1->rpath);
1092 tcc_free(s1->init_symbol);
1093 tcc_free(s1->fini_symbol);
1094 tcc_free(s1->outfile);
1095 tcc_free(s1->deps_outfile);
1096 dynarray_reset(&s1->files, &s1->nb_files);
1097 dynarray_reset(&s1->target_deps, &s1->nb_target_deps);
1098
1099 #ifdef TCC_IS_NATIVE
1100 # ifdef HAVE_SELINUX
1101 munmap (s1->write_mem, s1->mem_size);
1102 munmap (s1->runtime_mem, s1->mem_size);
1103 # else
1104 tcc_free(s1->runtime_mem);
1105 # endif
1106 #endif
1107
1108 if(s1->sym_attrs) tcc_free(s1->sym_attrs);
1109
1110 tcc_free(s1);
1111 }
1112
1113 LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
1114 {
1115 tcc_split_path(s, (void ***)&s->include_paths, &s->nb_include_paths, pathname);
1116 return 0;
1117 }
1118
1119 LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
1120 {
1121 tcc_split_path(s, (void ***)&s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
1122 return 0;
1123 }
1124
1125 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
1126 {
1127 const char *ext;
1128 ElfW(Ehdr) ehdr;
1129 int fd, ret, size;
1130
1131 /* find source file type with extension */
1132 ext = tcc_fileextension(filename);
1133 if (ext[0])
1134 ext++;
1135
1136 #ifdef CONFIG_TCC_ASM
1137 /* if .S file, define __ASSEMBLER__ like gcc does */
1138 if (!strcmp(ext, "S"))
1139 tcc_define_symbol(s1, "__ASSEMBLER__", NULL);
1140 #endif
1141
1142 /* open the file */
1143 ret = tcc_open(s1, filename);
1144 if (ret < 0) {
1145 if (flags & AFF_PRINT_ERROR)
1146 tcc_error_noabort("file '%s' not found", filename);
1147 return ret;
1148 }
1149
1150 /* update target deps */
1151 dynarray_add((void ***)&s1->target_deps, &s1->nb_target_deps,
1152 tcc_strdup(filename));
1153
1154 if (flags & AFF_PREPROCESS) {
1155 ret = tcc_preprocess(s1);
1156 goto the_end;
1157 }
1158
1159 if (!ext[0] || !PATHCMP(ext, "c")) {
1160 /* C file assumed */
1161 ret = tcc_compile(s1);
1162 goto the_end;
1163 }
1164
1165 #ifdef CONFIG_TCC_ASM
1166 if (!strcmp(ext, "S")) {
1167 /* preprocessed assembler */
1168 ret = tcc_assemble(s1, 1);
1169 goto the_end;
1170 }
1171
1172 if (!strcmp(ext, "s")) {
1173 /* non preprocessed assembler */
1174 ret = tcc_assemble(s1, 0);
1175 goto the_end;
1176 }
1177 #endif
1178
1179 fd = file->fd;
1180 /* assume executable format: auto guess file type */
1181 size = read(fd, &ehdr, sizeof(ehdr));
1182 lseek(fd, 0, SEEK_SET);
1183 if (size <= 0) {
1184 tcc_error_noabort("could not read header");
1185 goto the_end;
1186 }
1187
1188 if (size == sizeof(ehdr) &&
1189 ehdr.e_ident[0] == ELFMAG0 &&
1190 ehdr.e_ident[1] == ELFMAG1 &&
1191 ehdr.e_ident[2] == ELFMAG2 &&
1192 ehdr.e_ident[3] == ELFMAG3) {
1193
1194 /* do not display line number if error */
1195 file->line_num = 0;
1196 if (ehdr.e_type == ET_REL) {
1197 ret = tcc_load_object_file(s1, fd, 0);
1198 goto the_end;
1199
1200 }
1201 #ifndef TCC_TARGET_PE
1202 if (ehdr.e_type == ET_DYN) {
1203 if (s1->output_type == TCC_OUTPUT_MEMORY) {
1204 #ifdef TCC_IS_NATIVE
1205 void *h;
1206 h = dlopen(filename, RTLD_GLOBAL | RTLD_LAZY);
1207 if (h)
1208 #endif
1209 ret = 0;
1210 } else {
1211 ret = tcc_load_dll(s1, fd, filename,
1212 (flags & AFF_REFERENCED_DLL) != 0);
1213 }
1214 goto the_end;
1215 }
1216 #endif
1217 tcc_error_noabort("unrecognized ELF file");
1218 goto the_end;
1219 }
1220
1221 if (memcmp((char *)&ehdr, ARMAG, 8) == 0) {
1222 file->line_num = 0; /* do not display line number if error */
1223 ret = tcc_load_archive(s1, fd);
1224 goto the_end;
1225 }
1226
1227 #ifdef TCC_TARGET_COFF
1228 if (*(uint16_t *)(&ehdr) == COFF_C67_MAGIC) {
1229 ret = tcc_load_coff(s1, fd);
1230 goto the_end;
1231 }
1232 #endif
1233
1234 #ifdef TCC_TARGET_PE
1235 ret = pe_load_file(s1, filename, fd);
1236 #else
1237 /* as GNU ld, consider it is an ld script if not recognized */
1238 ret = tcc_load_ldscript(s1);
1239 #endif
1240 if (ret < 0)
1241 tcc_error_noabort("unrecognized file type");
1242
1243 the_end:
1244 tcc_close();
1245 return ret;
1246 }
1247
1248 LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename)
1249 {
1250 if (s->output_type == TCC_OUTPUT_PREPROCESS)
1251 return tcc_add_file_internal(s, filename, AFF_PRINT_ERROR | AFF_PREPROCESS);
1252 else
1253 return tcc_add_file_internal(s, filename, AFF_PRINT_ERROR);
1254 }
1255
1256 LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
1257 {
1258 tcc_split_path(s, (void ***)&s->library_paths, &s->nb_library_paths, pathname);
1259 return 0;
1260 }
1261
1262 static int tcc_add_library_internal(TCCState *s, const char *fmt,
1263 const char *filename, int flags, char **paths, int nb_paths)
1264 {
1265 char buf[1024];
1266 int i;
1267
1268 for(i = 0; i < nb_paths; i++) {
1269 snprintf(buf, sizeof(buf), fmt, paths[i], filename);
1270 if (tcc_add_file_internal(s, buf, flags) == 0)
1271 return 0;
1272 }
1273 return -1;
1274 }
1275
1276 /* find and load a dll. Return non zero if not found */
1277 /* XXX: add '-rpath' option support ? */
1278 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags)
1279 {
1280 return tcc_add_library_internal(s, "%s/%s", filename, flags,
1281 s->library_paths, s->nb_library_paths);
1282 }
1283
1284 ST_FUNC int tcc_add_crt(TCCState *s, const char *filename)
1285 {
1286 if (-1 == tcc_add_library_internal(s, "%s/%s",
1287 filename, 0, s->crt_paths, s->nb_crt_paths))
1288 tcc_error_noabort("file '%s' not found", filename);
1289 return 0;
1290 }
1291
1292 /* the library name is the same as the argument of the '-l' option */
1293 LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
1294 {
1295 #ifdef TCC_TARGET_PE
1296 const char *libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
1297 const char **pp = s->static_link ? libs + 4 : libs;
1298 #else
1299 const char *libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
1300 const char **pp = s->static_link ? libs + 1 : libs;
1301 #endif
1302 while (*pp) {
1303 if (0 == tcc_add_library_internal(s, *pp,
1304 libraryname, 0, s->library_paths, s->nb_library_paths))
1305 return 0;
1306 ++pp;
1307 }
1308 return -1;
1309 }
1310
1311 LIBTCCAPI int tcc_add_symbol(TCCState *s, const char *name, const void *val)
1312 {
1313 #ifdef TCC_TARGET_PE
1314 /* On x86_64 'val' might not be reachable with a 32bit offset.
1315 So it is handled here as if it were in a DLL. */
1316 pe_putimport(s, 0, name, (uintptr_t)val);
1317 #else
1318 add_elf_sym(symtab_section, (uintptr_t)val, 0,
1319 ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
1320 SHN_ABS, name);
1321 #endif
1322 return 0;
1323 }
1324
1325 LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
1326 {
1327 s->output_type = output_type;
1328
1329 if (!s->nostdinc) {
1330 /* default include paths */
1331 /* -isystem paths have already been handled */
1332 tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS);
1333 }
1334
1335 /* if bound checking, then add corresponding sections */
1336 #ifdef CONFIG_TCC_BCHECK
1337 if (s->do_bounds_check) {
1338 /* define symbol */
1339 tcc_define_symbol(s, "__BOUNDS_CHECKING_ON", NULL);
1340 /* create bounds sections */
1341 bounds_section = new_section(s, ".bounds",
1342 SHT_PROGBITS, SHF_ALLOC);
1343 lbounds_section = new_section(s, ".lbounds",
1344 SHT_PROGBITS, SHF_ALLOC);
1345 }
1346 #endif
1347
1348 if (s->char_is_unsigned) {
1349 tcc_define_symbol(s, "__CHAR_UNSIGNED__", NULL);
1350 }
1351
1352 /* add debug sections */
1353 if (s->do_debug) {
1354 /* stab symbols */
1355 stab_section = new_section(s, ".stab", SHT_PROGBITS, 0);
1356 stab_section->sh_entsize = sizeof(Stab_Sym);
1357 stabstr_section = new_section(s, ".stabstr", SHT_STRTAB, 0);
1358 put_elf_str(stabstr_section, "");
1359 stab_section->link = stabstr_section;
1360 /* put first entry */
1361 put_stabs("", 0, 0, 0, 0);
1362 }
1363
1364 tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
1365 #ifdef TCC_TARGET_PE
1366 # ifdef _WIN32
1367 tcc_add_systemdir(s);
1368 # endif
1369 #else
1370 /* add libc crt1/crti objects */
1371 if ((output_type == TCC_OUTPUT_EXE || output_type == TCC_OUTPUT_DLL) &&
1372 !s->nostdlib) {
1373 if (output_type != TCC_OUTPUT_DLL)
1374 tcc_add_crt(s, "crt1.o");
1375 tcc_add_crt(s, "crti.o");
1376 }
1377 #endif
1378 return 0;
1379 }
1380
1381 LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
1382 {
1383 tcc_free(s->tcc_lib_path);
1384 s->tcc_lib_path = tcc_strdup(path);
1385 }
1386
1387 #define WD_ALL 0x0001 /* warning is activated when using -Wall */
1388 #define FD_INVERT 0x0002 /* invert value before storing */
1389
1390 typedef struct FlagDef {
1391 uint16_t offset;
1392 uint16_t flags;
1393 const char *name;
1394 } FlagDef;
1395
1396 static const FlagDef warning_defs[] = {
1397 { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
1398 { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
1399 { offsetof(TCCState, warn_error), 0, "error" },
1400 { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL,
1401 "implicit-function-declaration" },
1402 };
1403
1404 ST_FUNC int set_flag(TCCState *s, const FlagDef *flags, int nb_flags,
1405 const char *name, int value)
1406 {
1407 int i;
1408 const FlagDef *p;
1409 const char *r;
1410
1411 r = name;
1412 if (r[0] == 'n' && r[1] == 'o' && r[2] == '-') {
1413 r += 3;
1414 value = !value;
1415 }
1416 for(i = 0, p = flags; i < nb_flags; i++, p++) {
1417 if (!strcmp(r, p->name))
1418 goto found;
1419 }
1420 return -1;
1421 found:
1422 if (p->flags & FD_INVERT)
1423 value = !value;
1424 *(int *)((uint8_t *)s + p->offset) = value;
1425 return 0;
1426 }
1427
1428 /* set/reset a warning */
1429 static int tcc_set_warning(TCCState *s, const char *warning_name, int value)
1430 {
1431 int i;
1432 const FlagDef *p;
1433
1434 if (!strcmp(warning_name, "all")) {
1435 for(i = 0, p = warning_defs; i < countof(warning_defs); i++, p++) {
1436 if (p->flags & WD_ALL)
1437 *(int *)((uint8_t *)s + p->offset) = 1;
1438 }
1439 return 0;
1440 } else {
1441 return set_flag(s, warning_defs, countof(warning_defs),
1442 warning_name, value);
1443 }
1444 }
1445
1446 static const FlagDef flag_defs[] = {
1447 { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" },
1448 { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" },
1449 { offsetof(TCCState, nocommon), FD_INVERT, "common" },
1450 { offsetof(TCCState, leading_underscore), 0, "leading-underscore" },
1451 };
1452
1453 /* set/reset a flag */
1454 static int tcc_set_flag(TCCState *s, const char *flag_name, int value)
1455 {
1456 return set_flag(s, flag_defs, countof(flag_defs),
1457 flag_name, value);
1458 }
1459
1460
1461 static int strstart(const char *val, const char **str)
1462 {
1463 const char *p, *q;
1464 p = *str;
1465 q = val;
1466 while (*q) {
1467 if (*p != *q)
1468 return 0;
1469 p++;
1470 q++;
1471 }
1472 *str = p;
1473 return 1;
1474 }
1475
1476 /* Like strstart, but automatically takes into account that ld options can
1477 *
1478 * - start with double or single dash (e.g. '--soname' or '-soname')
1479 * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so'
1480 * or '-Wl,-soname=x.so')
1481 *
1482 * you provide `val` always in 'option[=]' form (no leading -)
1483 */
1484 static int link_option(const char *str, const char *val, const char **ptr)
1485 {
1486 const char *p, *q;
1487
1488 /* there should be 1 or 2 dashes */
1489 if (*str++ != '-')
1490 return 0;
1491 if (*str == '-')
1492 str++;
1493
1494 /* then str & val should match (potentialy up to '=') */
1495 p = str;
1496 q = val;
1497
1498 while (*q != '\0' && *q != '=') {
1499 if (*p != *q)
1500 return 0;
1501 p++;
1502 q++;
1503 }
1504
1505 /* '=' near eos means ',' or '=' is ok */
1506 if (*q == '=') {
1507 if (*p != ',' && *p != '=')
1508 return 0;
1509 p++;
1510 q++;
1511 }
1512
1513 if (ptr)
1514 *ptr = p;
1515 return 1;
1516 }
1517
1518 static const char *skip_linker_arg(const char **str)
1519 {
1520 const char *s1 = *str;
1521 const char *s2 = strchr(s1, ',');
1522 *str = s2 ? s2++ : (s2 = s1 + strlen(s1));
1523 return s2;
1524 }
1525
1526 static char *copy_linker_arg(const char *p)
1527 {
1528 const char *q = p;
1529 skip_linker_arg(&q);
1530 return pstrncpy(tcc_malloc(q - p + 1), p, q - p);
1531 }
1532
1533 /* set linker options */
1534 static int tcc_set_linker(TCCState *s, const char *option)
1535 {
1536 while (option && *option) {
1537
1538 const char *p = option;
1539 char *end = NULL;
1540 int ignoring = 0;
1541
1542 if (link_option(option, "Bsymbolic", &p)) {
1543 s->symbolic = 1;
1544 } else if (link_option(option, "nostdlib", &p)) {
1545 s->nostdlib = 1;
1546 } else if (link_option(option, "fini=", &p)) {
1547 s->fini_symbol = copy_linker_arg(p);
1548 ignoring = 1;
1549 } else if (link_option(option, "image-base=", &p)
1550 || link_option(option, "Ttext=", &p)) {
1551 s->text_addr = strtoull(p, &end, 16);
1552 s->has_text_addr = 1;
1553 } else if (link_option(option, "init=", &p)) {
1554 s->init_symbol = copy_linker_arg(p);
1555 ignoring = 1;
1556 } else if (link_option(option, "oformat=", &p)) {
1557 #if defined(TCC_TARGET_PE)
1558 if (strstart("pe-", &p)) {
1559 #elif defined(TCC_TARGET_X86_64)
1560 if (strstart("elf64-", &p)) {
1561 #else
1562 if (strstart("elf32-", &p)) {
1563 #endif
1564 s->output_format = TCC_OUTPUT_FORMAT_ELF;
1565 } else if (!strcmp(p, "binary")) {
1566 s->output_format = TCC_OUTPUT_FORMAT_BINARY;
1567 #ifdef TCC_TARGET_COFF
1568 } else if (!strcmp(p, "coff")) {
1569 s->output_format = TCC_OUTPUT_FORMAT_COFF;
1570 #endif
1571 } else
1572 goto err;
1573
1574 } else if (link_option(option, "as-needed", &p)) {
1575 ignoring = 1;
1576 } else if (link_option(option, "O", &p)) {
1577 ignoring = 1;
1578 } else if (link_option(option, "rpath=", &p)) {
1579 s->rpath = copy_linker_arg(p);
1580 } else if (link_option(option, "section-alignment=", &p)) {
1581 s->section_align = strtoul(p, &end, 16);
1582 } else if (link_option(option, "soname=", &p)) {
1583 s->soname = copy_linker_arg(p);
1584 #ifdef TCC_TARGET_PE
1585 } else if (link_option(option, "file-alignment=", &p)) {
1586 s->pe_file_align = strtoul(p, &end, 16);
1587 } else if (link_option(option, "stack=", &p)) {
1588 s->pe_stack_size = strtoul(p, &end, 10);
1589 } else if (link_option(option, "subsystem=", &p)) {
1590 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
1591 if (!strcmp(p, "native")) {
1592 s->pe_subsystem = 1;
1593 } else if (!strcmp(p, "console")) {
1594 s->pe_subsystem = 3;
1595 } else if (!strcmp(p, "gui")) {
1596 s->pe_subsystem = 2;
1597 } else if (!strcmp(p, "posix")) {
1598 s->pe_subsystem = 7;
1599 } else if (!strcmp(p, "efiapp")) {
1600 s->pe_subsystem = 10;
1601 } else if (!strcmp(p, "efiboot")) {
1602 s->pe_subsystem = 11;
1603 } else if (!strcmp(p, "efiruntime")) {
1604 s->pe_subsystem = 12;
1605 } else if (!strcmp(p, "efirom")) {
1606 s->pe_subsystem = 13;
1607 #elif defined(TCC_TARGET_ARM)
1608 if (!strcmp(p, "wince")) {
1609 s->pe_subsystem = 9;
1610 #endif
1611 } else
1612 goto err;
1613 #endif
1614 } else
1615 goto err;
1616
1617 if (ignoring && s->warn_unsupported) err: {
1618 char buf[100], *e;
1619 pstrcpy(buf, sizeof buf, e = copy_linker_arg(option)), tcc_free(e);
1620 if (ignoring)
1621 tcc_warning("unsupported linker option '%s'", buf);
1622 else
1623 tcc_error("unsupported linker option '%s'", buf);
1624 }
1625 option = skip_linker_arg(&p);
1626 }
1627 return 0;
1628 }
1629
1630 typedef struct TCCOption {
1631 const char *name;
1632 uint16_t index;
1633 uint16_t flags;
1634 } TCCOption;
1635
1636 enum {
1637 TCC_OPTION_HELP,
1638 TCC_OPTION_I,
1639 TCC_OPTION_D,
1640 TCC_OPTION_U,
1641 TCC_OPTION_L,
1642 TCC_OPTION_B,
1643 TCC_OPTION_l,
1644 TCC_OPTION_bench,
1645 TCC_OPTION_bt,
1646 TCC_OPTION_b,
1647 TCC_OPTION_g,
1648 TCC_OPTION_c,
1649 TCC_OPTION_float_abi,
1650 TCC_OPTION_static,
1651 TCC_OPTION_shared,
1652 TCC_OPTION_soname,
1653 TCC_OPTION_o,
1654 TCC_OPTION_r,
1655 TCC_OPTION_s,
1656 TCC_OPTION_Wl,
1657 TCC_OPTION_W,
1658 TCC_OPTION_O,
1659 TCC_OPTION_m,
1660 TCC_OPTION_f,
1661 TCC_OPTION_isystem,
1662 TCC_OPTION_nostdinc,
1663 TCC_OPTION_nostdlib,
1664 TCC_OPTION_print_search_dirs,
1665 TCC_OPTION_rdynamic,
1666 TCC_OPTION_pedantic,
1667 TCC_OPTION_pthread,
1668 TCC_OPTION_run,
1669 TCC_OPTION_v,
1670 TCC_OPTION_w,
1671 TCC_OPTION_pipe,
1672 TCC_OPTION_E,
1673 TCC_OPTION_MD,
1674 TCC_OPTION_MF,
1675 TCC_OPTION_x,
1676 TCC_OPTION_dumpversion,
1677 };
1678
1679 #define TCC_OPTION_HAS_ARG 0x0001
1680 #define TCC_OPTION_NOSEP 0x0002 /* cannot have space before option and arg */
1681
1682 static const TCCOption tcc_options[] = {
1683 { "h", TCC_OPTION_HELP, 0 },
1684 { "-help", TCC_OPTION_HELP, 0 },
1685 { "?", TCC_OPTION_HELP, 0 },
1686 { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
1687 { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
1688 { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
1689 { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
1690 { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
1691 { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1692 { "bench", TCC_OPTION_bench, 0 },
1693 #ifdef CONFIG_TCC_BACKTRACE
1694 { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG },
1695 #endif
1696 #ifdef CONFIG_TCC_BCHECK
1697 { "b", TCC_OPTION_b, 0 },
1698 #endif
1699 { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1700 { "c", TCC_OPTION_c, 0 },
1701 #ifdef TCC_TARGET_ARM
1702 { "mfloat-abi", TCC_OPTION_float_abi, TCC_OPTION_HAS_ARG },
1703 #endif
1704 { "static", TCC_OPTION_static, 0 },
1705 { "shared", TCC_OPTION_shared, 0 },
1706 { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
1707 { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
1708 { "pedantic", TCC_OPTION_pedantic, 0},
1709 { "pthread", TCC_OPTION_pthread, 0},
1710 { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1711 { "rdynamic", TCC_OPTION_rdynamic, 0 },
1712 { "r", TCC_OPTION_r, 0 },
1713 { "s", TCC_OPTION_s, 0 },
1714 { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1715 { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1716 { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1717 { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG },
1718 { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1719 { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
1720 { "nostdinc", TCC_OPTION_nostdinc, 0 },
1721 { "nostdlib", TCC_OPTION_nostdlib, 0 },
1722 { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
1723 { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1724 { "w", TCC_OPTION_w, 0 },
1725 { "pipe", TCC_OPTION_pipe, 0},
1726 { "E", TCC_OPTION_E, 0},
1727 { "MD", TCC_OPTION_MD, 0},
1728 { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
1729 { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
1730 { "dumpversion", TCC_OPTION_dumpversion, 0},
1731 { NULL, 0, 0 },
1732 };
1733
1734 static void parse_option_D(TCCState *s1, const char *optarg)
1735 {
1736 char *sym = tcc_strdup(optarg);
1737 char *value = strchr(sym, '=');
1738 if (value)
1739 *value++ = '\0';
1740 tcc_define_symbol(s1, sym, value);
1741 tcc_free(sym);
1742 }
1743
1744 PUB_FUNC int tcc_parse_args(TCCState *s, int argc, char **argv)
1745 {
1746 const TCCOption *popt;
1747 const char *optarg, *r;
1748 int run = 0;
1749 int pthread = 0;
1750 int optind = 0;
1751
1752 /* collect -Wl options for input such as "-Wl,-rpath -Wl,<path>" */
1753 CString linker_arg;
1754 cstr_new(&linker_arg);
1755
1756 while (optind < argc) {
1757
1758 r = argv[optind++];
1759 if (r[0] != '-' || r[1] == '\0') {
1760 /* add a new file */
1761 dynarray_add((void ***)&s->files, &s->nb_files, tcc_strdup(r));
1762 if (run) {
1763 optind--;
1764 /* argv[0] will be this file */
1765 break;
1766 }
1767 continue;
1768 }
1769
1770 /* find option in table */
1771 for(popt = tcc_options; ; ++popt) {
1772 const char *p1 = popt->name;
1773 const char *r1 = r + 1;
1774 if (p1 == NULL)
1775 tcc_error("invalid option -- '%s'", r);
1776 if (!strstart(p1, &r1))
1777 continue;
1778 optarg = r1;
1779 if (popt->flags & TCC_OPTION_HAS_ARG) {
1780 if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
1781 if (optind >= argc)
1782 tcc_error("argument to '%s' is missing", r);
1783 optarg = argv[optind++];
1784 }
1785 } else if (*r1 != '\0')
1786 continue;
1787 break;
1788 }
1789
1790 switch(popt->index) {
1791 case TCC_OPTION_HELP:
1792 return 0;
1793 case TCC_OPTION_I:
1794 if (tcc_add_include_path(s, optarg) < 0)
1795 tcc_error("too many include paths");
1796 break;
1797 case TCC_OPTION_D:
1798 parse_option_D(s, optarg);
1799 break;
1800 case TCC_OPTION_U:
1801 tcc_undefine_symbol(s, optarg);
1802 break;
1803 case TCC_OPTION_L:
1804 tcc_add_library_path(s, optarg);
1805 break;
1806 case TCC_OPTION_B:
1807 /* set tcc utilities path (mainly for tcc development) */
1808 tcc_set_lib_path(s, optarg);
1809 break;
1810 case TCC_OPTION_l:
1811 dynarray_add((void ***)&s->files, &s->nb_files, tcc_strdup(r));
1812 s->nb_libraries++;
1813 break;
1814 case TCC_OPTION_pthread:
1815 parse_option_D(s, "_REENTRANT");
1816 pthread = 1;
1817 break;
1818 case TCC_OPTION_bench:
1819 s->do_bench = 1;
1820 break;
1821 #ifdef CONFIG_TCC_BACKTRACE
1822 case TCC_OPTION_bt:
1823 tcc_set_num_callers(atoi(optarg));
1824 break;
1825 #endif
1826 #ifdef CONFIG_TCC_BCHECK
1827 case TCC_OPTION_b:
1828 s->do_bounds_check = 1;
1829 s->do_debug = 1;
1830 break;
1831 #endif
1832 case TCC_OPTION_g:
1833 s->do_debug = 1;
1834 break;
1835 case TCC_OPTION_c:
1836 s->output_type = TCC_OUTPUT_OBJ;
1837 break;
1838 #ifdef TCC_TARGET_ARM
1839 case TCC_OPTION_float_abi:
1840 /* tcc doesn't support soft float yet */
1841 if (!strcmp(optarg, "softfp")) {
1842 s->float_abi = ARM_SOFTFP_FLOAT;
1843 tcc_undefine_symbol(s, "__ARM_PCS_VFP");
1844 } else if (!strcmp(optarg, "hard"))
1845 s->float_abi = ARM_HARD_FLOAT;
1846 else
1847 tcc_error("unsupported float abi '%s'", optarg);
1848 break;
1849 #endif
1850 case TCC_OPTION_static:
1851 s->static_link = 1;
1852 break;
1853 case TCC_OPTION_shared:
1854 s->output_type = TCC_OUTPUT_DLL;
1855 break;
1856 case TCC_OPTION_soname:
1857 s->soname = tcc_strdup(optarg);
1858 break;
1859 case TCC_OPTION_m:
1860 s->option_m = tcc_strdup(optarg);
1861 break;
1862 case TCC_OPTION_o:
1863 s->outfile = tcc_strdup(optarg);
1864 break;
1865 case TCC_OPTION_r:
1866 /* generate a .o merging several output files */
1867 s->option_r = 1;
1868 s->output_type = TCC_OUTPUT_OBJ;
1869 break;
1870 case TCC_OPTION_isystem:
1871 tcc_add_sysinclude_path(s, optarg);
1872 break;
1873 case TCC_OPTION_nostdinc:
1874 s->nostdinc = 1;
1875 break;
1876 case TCC_OPTION_nostdlib:
1877 s->nostdlib = 1;
1878 break;
1879 case TCC_OPTION_print_search_dirs:
1880 s->print_search_dirs = 1;
1881 break;
1882 case TCC_OPTION_run:
1883 s->output_type = TCC_OUTPUT_MEMORY;
1884 tcc_set_options(s, optarg);
1885 run = 1;
1886 break;
1887 case TCC_OPTION_v:
1888 do ++s->verbose; while (*optarg++ == 'v');
1889 break;
1890 case TCC_OPTION_f:
1891 if (tcc_set_flag(s, optarg, 1) < 0 && s->warn_unsupported)
1892 goto unsupported_option;
1893 break;
1894 case TCC_OPTION_W:
1895 if (tcc_set_warning(s, optarg, 1) < 0 &&
1896 s->warn_unsupported)
1897 goto unsupported_option;
1898 break;
1899 case TCC_OPTION_w:
1900 s->warn_none = 1;
1901 break;
1902 case TCC_OPTION_rdynamic:
1903 s->rdynamic = 1;
1904 break;
1905 case TCC_OPTION_Wl:
1906 if (linker_arg.size)
1907 --linker_arg.size, cstr_ccat(&linker_arg, ',');
1908 cstr_cat(&linker_arg, optarg);
1909 cstr_ccat(&linker_arg, '\0');
1910 break;
1911 case TCC_OPTION_E:
1912 s->output_type = TCC_OUTPUT_PREPROCESS;
1913 break;
1914 case TCC_OPTION_MD:
1915 s->gen_deps = 1;
1916 break;
1917 case TCC_OPTION_MF:
1918 s->deps_outfile = tcc_strdup(optarg);
1919 break;
1920 case TCC_OPTION_dumpversion:
1921 printf ("%s\n", TCC_VERSION);
1922 exit(0);
1923 case TCC_OPTION_O:
1924 case TCC_OPTION_pedantic:
1925 case TCC_OPTION_pipe:
1926 case TCC_OPTION_s:
1927 case TCC_OPTION_x:
1928 /* ignored */
1929 break;
1930 default:
1931 if (s->warn_unsupported) {
1932 unsupported_option:
1933 tcc_warning("unsupported option '%s'", r);
1934 }
1935 break;
1936 }
1937 }
1938
1939 if (pthread && s->output_type != TCC_OUTPUT_OBJ)
1940 tcc_set_options(s, "-lpthread");
1941
1942 tcc_set_linker(s, (const char *)linker_arg.data);
1943 cstr_free(&linker_arg);
1944
1945 return optind;
1946 }
1947
1948 LIBTCCAPI int tcc_set_options(TCCState *s, const char *str)
1949 {
1950 const char *s1;
1951 char **argv, *arg;
1952 int argc, len;
1953 int ret;
1954
1955 argc = 0, argv = NULL;
1956 for(;;) {
1957 while (is_space(*str))
1958 str++;
1959 if (*str == '\0')
1960 break;
1961 s1 = str;
1962 while (*str != '\0' && !is_space(*str))
1963 str++;
1964 len = str - s1;
1965 arg = tcc_malloc(len + 1);
1966 pstrncpy(arg, s1, len);
1967 dynarray_add((void ***)&argv, &argc, arg);
1968 }
1969 ret = tcc_parse_args(s, argc, argv);
1970 dynarray_reset(&argv, &argc);
1971 return ret;
1972 }
1973
1974 PUB_FUNC void tcc_print_stats(TCCState *s, int64_t total_time)
1975 {
1976 double tt;
1977 tt = (double)total_time / 1000000.0;
1978 if (tt < 0.001)
1979 tt = 0.001;
1980 if (total_bytes < 1)
1981 total_bytes = 1;
1982 printf("%d idents, %d lines, %d bytes, %0.3f s, %d lines/s, %0.1f MB/s\n",
1983 tok_ident - TOK_IDENT, total_lines, total_bytes,
1984 tt, (int)(total_lines / tt),
1985 total_bytes / tt / 1000000.0);
1986 }
1987
1988 PUB_FUNC void tcc_set_environment(TCCState *s)
1989 {
1990 char * path;
1991
1992 path = getenv("C_INCLUDE_PATH");
1993 if(path != NULL) {
1994 tcc_add_include_path(s, path);
1995 }
1996 path = getenv("CPATH");
1997 if(path != NULL) {
1998 tcc_add_include_path(s, path);
1999 }
2000 path = getenv("LIBRARY_PATH");
2001 if(path != NULL) {
2002 tcc_add_library_path(s, path);
2003 }
2004 }