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