fix the bug #31403: parser bug in structure
[tinycc.git] / libtcc.c
blobd33cdb030a129c60bd6bc00c4071c46a2cf57525
1 /*
2 * TCC - Tiny C Compiler
4 * Copyright (c) 2001-2004 Fabrice Bellard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include "tcc.h"
23 /********************************************************/
24 /* global variables */
26 /* use GNU C extensions */
27 ST_DATA int gnu_ext = 1;
29 /* use TinyCC extensions */
30 ST_DATA int tcc_ext = 1;
32 /* XXX: get rid of this ASAP */
33 ST_DATA struct TCCState *tcc_state;
35 /********************************************************/
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_ARM64
49 #include "arm64-gen.c"
50 #endif
51 #ifdef TCC_TARGET_C67
52 #include "c67-gen.c"
53 #endif
54 #ifdef TCC_TARGET_X86_64
55 #include "x86_64-gen.c"
56 #endif
57 #ifdef CONFIG_TCC_ASM
58 #include "tccasm.c"
59 #if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64
60 #include "i386-asm.c"
61 #endif
62 #endif
63 #ifdef TCC_TARGET_COFF
64 #include "tcccoff.c"
65 #endif
66 #ifdef TCC_TARGET_PE
67 #include "tccpe.c"
68 #endif
69 #endif /* ONE_SOURCE */
71 /********************************************************/
72 #ifndef CONFIG_TCC_ASM
73 ST_FUNC void asm_instr(void)
75 tcc_error("inline asm() not supported");
77 ST_FUNC void asm_global_instr(void)
79 tcc_error("inline asm() not supported");
81 #endif
83 /********************************************************/
84 #ifdef _WIN32
85 static char *normalize_slashes(char *path)
87 char *p;
88 for (p = path; *p; ++p)
89 if (*p == '\\')
90 *p = '/';
91 return path;
94 static HMODULE tcc_module;
96 /* on win32, we suppose the lib and includes are at the location of 'tcc.exe' */
97 static void tcc_set_lib_path_w32(TCCState *s)
99 char path[1024], *p;
100 GetModuleFileNameA(tcc_module, path, sizeof path);
101 p = tcc_basename(normalize_slashes(strlwr(path)));
102 if (p - 5 > path && 0 == strncmp(p - 5, "/bin/", 5))
103 p -= 5;
104 else if (p > path)
105 p--;
106 *p = 0;
107 tcc_set_lib_path(s, path);
110 #ifdef TCC_TARGET_PE
111 static void tcc_add_systemdir(TCCState *s)
113 char buf[1000];
114 GetSystemDirectory(buf, sizeof buf);
115 tcc_add_library_path(s, normalize_slashes(buf));
117 #endif
119 #ifndef CONFIG_TCC_STATIC
120 void dlclose(void *p)
122 FreeLibrary((HMODULE)p);
124 #endif
126 #ifdef LIBTCC_AS_DLL
127 BOOL WINAPI DllMain (HINSTANCE hDll, DWORD dwReason, LPVOID lpReserved)
129 if (DLL_PROCESS_ATTACH == dwReason)
130 tcc_module = hDll;
131 return TRUE;
133 #endif
134 #endif
136 /********************************************************/
137 /* copy a string and truncate it. */
138 PUB_FUNC char *pstrcpy(char *buf, int buf_size, const char *s)
140 char *q, *q_end;
141 int c;
143 if (buf_size > 0) {
144 q = buf;
145 q_end = buf + buf_size - 1;
146 while (q < q_end) {
147 c = *s++;
148 if (c == '\0')
149 break;
150 *q++ = c;
152 *q = '\0';
154 return buf;
157 /* strcat and truncate. */
158 PUB_FUNC char *pstrcat(char *buf, int buf_size, const char *s)
160 int len;
161 len = strlen(buf);
162 if (len < buf_size)
163 pstrcpy(buf + len, buf_size - len, s);
164 return buf;
167 PUB_FUNC char *pstrncpy(char *out, const char *in, size_t num)
169 memcpy(out, in, num);
170 out[num] = '\0';
171 return out;
174 /* extract the basename of a file */
175 PUB_FUNC char *tcc_basename(const char *name)
177 char *p = strchr(name, 0);
178 while (p > name && !IS_DIRSEP(p[-1]))
179 --p;
180 return p;
183 /* extract extension part of a file
185 * (if no extension, return pointer to end-of-string)
187 PUB_FUNC char *tcc_fileextension (const char *name)
189 char *b = tcc_basename(name);
190 char *e = strrchr(b, '.');
191 return e ? e : strchr(b, 0);
194 /********************************************************/
195 /* memory management */
197 #undef free
198 #undef malloc
199 #undef realloc
201 #ifdef MEM_DEBUG
202 ST_DATA int mem_cur_size;
203 ST_DATA int mem_max_size;
204 unsigned malloc_usable_size(void*);
205 #endif
207 PUB_FUNC void tcc_free(void *ptr)
209 #ifdef MEM_DEBUG
210 mem_cur_size -= malloc_usable_size(ptr);
211 #endif
212 free(ptr);
215 PUB_FUNC void *tcc_malloc(unsigned long size)
217 void *ptr;
218 ptr = malloc(size);
219 if (!ptr && size)
220 tcc_error("memory full (malloc)");
221 #ifdef MEM_DEBUG
222 mem_cur_size += malloc_usable_size(ptr);
223 if (mem_cur_size > mem_max_size)
224 mem_max_size = mem_cur_size;
225 #endif
226 return ptr;
229 PUB_FUNC void *tcc_mallocz(unsigned long size)
231 void *ptr;
232 ptr = tcc_malloc(size);
233 memset(ptr, 0, size);
234 return ptr;
237 PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size)
239 void *ptr1;
240 #ifdef MEM_DEBUG
241 mem_cur_size -= malloc_usable_size(ptr);
242 #endif
243 ptr1 = realloc(ptr, size);
244 if (!ptr1 && size)
245 tcc_error("memory full (realloc)");
246 #ifdef MEM_DEBUG
247 /* NOTE: count not correct if alloc error, but not critical */
248 mem_cur_size += malloc_usable_size(ptr1);
249 if (mem_cur_size > mem_max_size)
250 mem_max_size = mem_cur_size;
251 #endif
252 return ptr1;
255 PUB_FUNC char *tcc_strdup(const char *str)
257 char *ptr;
258 ptr = tcc_malloc(strlen(str) + 1);
259 strcpy(ptr, str);
260 return ptr;
263 PUB_FUNC void tcc_memstats(void)
265 #ifdef MEM_DEBUG
266 printf("memory: %d bytes, max = %d bytes\n", mem_cur_size, mem_max_size);
267 #endif
270 #define free(p) use_tcc_free(p)
271 #define malloc(s) use_tcc_malloc(s)
272 #define realloc(p, s) use_tcc_realloc(p, s)
274 /********************************************************/
275 /* dynarrays */
277 ST_FUNC void dynarray_add(void ***ptab, int *nb_ptr, void *data)
279 int nb, nb_alloc;
280 void **pp;
282 nb = *nb_ptr;
283 pp = *ptab;
284 /* every power of two we double array size */
285 if ((nb & (nb - 1)) == 0) {
286 if (!nb)
287 nb_alloc = 1;
288 else
289 nb_alloc = nb * 2;
290 pp = tcc_realloc(pp, nb_alloc * sizeof(void *));
291 *ptab = pp;
293 pp[nb++] = data;
294 *nb_ptr = nb;
297 ST_FUNC void dynarray_reset(void *pp, int *n)
299 void **p;
300 for (p = *(void***)pp; *n; ++p, --*n)
301 if (*p)
302 tcc_free(*p);
303 tcc_free(*(void**)pp);
304 *(void**)pp = NULL;
307 static void tcc_split_path(TCCState *s, void ***p_ary, int *p_nb_ary, const char *in)
309 const char *p;
310 do {
311 int c;
312 CString str;
314 cstr_new(&str);
315 for (p = in; c = *p, c != '\0' && c != PATHSEP; ++p) {
316 if (c == '{' && p[1] && p[2] == '}') {
317 c = p[1], p += 2;
318 if (c == 'B')
319 cstr_cat(&str, s->tcc_lib_path);
320 } else {
321 cstr_ccat(&str, c);
324 cstr_ccat(&str, '\0');
325 dynarray_add(p_ary, p_nb_ary, str.data);
326 in = p+1;
327 } while (*p);
330 /********************************************************/
332 ST_FUNC Section *new_section(TCCState *s1, const char *name, int sh_type, int sh_flags)
334 Section *sec;
336 sec = tcc_mallocz(sizeof(Section) + strlen(name));
337 strcpy(sec->name, name);
338 sec->sh_type = sh_type;
339 sec->sh_flags = sh_flags;
340 switch(sh_type) {
341 case SHT_HASH:
342 case SHT_REL:
343 case SHT_RELA:
344 case SHT_DYNSYM:
345 case SHT_SYMTAB:
346 case SHT_DYNAMIC:
347 sec->sh_addralign = 4;
348 break;
349 case SHT_STRTAB:
350 sec->sh_addralign = 1;
351 break;
352 default:
353 sec->sh_addralign = 32; /* default conservative alignment */
354 break;
357 if (sh_flags & SHF_PRIVATE) {
358 dynarray_add((void ***)&s1->priv_sections, &s1->nb_priv_sections, sec);
359 } else {
360 sec->sh_num = s1->nb_sections;
361 dynarray_add((void ***)&s1->sections, &s1->nb_sections, sec);
364 return sec;
367 static void free_section(Section *s)
369 tcc_free(s->data);
372 /* realloc section and set its content to zero */
373 ST_FUNC void section_realloc(Section *sec, unsigned long new_size)
375 unsigned long size;
376 unsigned char *data;
378 size = sec->data_allocated;
379 if (size == 0)
380 size = 1;
381 while (size < new_size)
382 size = size * 2;
383 data = tcc_realloc(sec->data, size);
384 memset(data + sec->data_allocated, 0, size - sec->data_allocated);
385 sec->data = data;
386 sec->data_allocated = size;
389 /* reserve at least 'size' bytes in section 'sec' from
390 sec->data_offset. */
391 ST_FUNC void *section_ptr_add(Section *sec, addr_t size)
393 size_t offset, offset1;
395 offset = sec->data_offset;
396 offset1 = offset + size;
397 if (offset1 > sec->data_allocated)
398 section_realloc(sec, offset1);
399 sec->data_offset = offset1;
400 return sec->data + offset;
403 /* reserve at least 'size' bytes from section start */
404 ST_FUNC void section_reserve(Section *sec, unsigned long size)
406 if (size > sec->data_allocated)
407 section_realloc(sec, size);
408 if (size > sec->data_offset)
409 sec->data_offset = size;
412 /* return a reference to a section, and create it if it does not
413 exists */
414 ST_FUNC Section *find_section(TCCState *s1, const char *name)
416 Section *sec;
417 int i;
418 for(i = 1; i < s1->nb_sections; i++) {
419 sec = s1->sections[i];
420 if (!strcmp(name, sec->name))
421 return sec;
423 /* sections are created as PROGBITS */
424 return new_section(s1, name, SHT_PROGBITS, SHF_ALLOC);
427 /* update sym->c so that it points to an external symbol in section
428 'section' with value 'value' */
429 ST_FUNC void put_extern_sym2(Sym *sym, Section *section,
430 addr_t value, unsigned long size,
431 int can_add_underscore)
433 int sym_type, sym_bind, sh_num, info, other;
434 ElfW(Sym) *esym;
435 const char *name;
436 char buf1[256];
438 if (section == NULL)
439 sh_num = SHN_UNDEF;
440 else if (section == SECTION_ABS)
441 sh_num = SHN_ABS;
442 else
443 sh_num = section->sh_num;
445 if ((sym->type.t & VT_BTYPE) == VT_FUNC) {
446 sym_type = STT_FUNC;
447 } else if ((sym->type.t & VT_BTYPE) == VT_VOID) {
448 sym_type = STT_NOTYPE;
449 } else {
450 sym_type = STT_OBJECT;
453 if (sym->type.t & VT_STATIC)
454 sym_bind = STB_LOCAL;
455 else {
456 if (sym->type.t & VT_WEAK)
457 sym_bind = STB_WEAK;
458 else
459 sym_bind = STB_GLOBAL;
462 if (!sym->c) {
463 name = get_tok_str(sym->v, NULL);
464 #ifdef CONFIG_TCC_BCHECK
465 if (tcc_state->do_bounds_check) {
466 char buf[32];
467 /* XXX: avoid doing that for statics ? */
468 /* if bound checking is activated, we change some function
469 names by adding the "__bound" prefix */
470 switch(sym->v) {
471 #ifdef TCC_TARGET_PE
472 /* XXX: we rely only on malloc hooks */
473 case TOK_malloc:
474 case TOK_free:
475 case TOK_realloc:
476 case TOK_memalign:
477 case TOK_calloc:
478 #endif
479 case TOK_memcpy:
480 case TOK_memmove:
481 case TOK_memset:
482 case TOK_strlen:
483 case TOK_strcpy:
484 case TOK_alloca:
485 strcpy(buf, "__bound_");
486 strcat(buf, name);
487 name = buf;
488 break;
491 #endif
492 other = 0;
494 #ifdef TCC_TARGET_PE
495 if (sym->type.t & VT_EXPORT)
496 other |= ST_PE_EXPORT;
497 if (sym_type == STT_FUNC && sym->type.ref) {
498 Sym *ref = sym->type.ref;
499 if (ref->a.func_export)
500 other |= ST_PE_EXPORT;
501 if (ref->a.func_call == FUNC_STDCALL && can_add_underscore) {
502 sprintf(buf1, "_%s@%d", name, ref->a.func_args * PTR_SIZE);
503 name = buf1;
504 other |= ST_PE_STDCALL;
505 can_add_underscore = 0;
507 } else {
508 if (find_elf_sym(tcc_state->dynsymtab_section, name))
509 other |= ST_PE_IMPORT;
510 if (sym->type.t & VT_IMPORT)
511 other |= ST_PE_IMPORT;
513 #else
514 if (! (sym->type.t & VT_STATIC))
515 other = (sym->type.t & VT_VIS_MASK) >> VT_VIS_SHIFT;
516 #endif
517 if (tcc_state->leading_underscore && can_add_underscore) {
518 buf1[0] = '_';
519 pstrcpy(buf1 + 1, sizeof(buf1) - 1, name);
520 name = buf1;
522 if (sym->asm_label) {
523 name = sym->asm_label;
525 info = ELFW(ST_INFO)(sym_bind, sym_type);
526 sym->c = add_elf_sym(symtab_section, value, size, info, other, sh_num, name);
527 } else {
528 esym = &((ElfW(Sym) *)symtab_section->data)[sym->c];
529 esym->st_value = value;
530 esym->st_size = size;
531 esym->st_shndx = sh_num;
535 ST_FUNC void put_extern_sym(Sym *sym, Section *section,
536 addr_t value, unsigned long size)
538 put_extern_sym2(sym, section, value, size, 1);
541 /* add a new relocation entry to symbol 'sym' in section 's' */
542 ST_FUNC void greloca(Section *s, Sym *sym, unsigned long offset, int type,
543 addr_t addend)
545 int c = 0;
546 if (sym) {
547 if (0 == sym->c)
548 put_extern_sym(sym, NULL, 0, 0);
549 c = sym->c;
551 /* now we can add ELF relocation info */
552 put_elf_reloca(symtab_section, s, offset, type, c, addend);
555 ST_FUNC void greloc(Section *s, Sym *sym, unsigned long offset, int type)
557 greloca(s, sym, offset, type, 0);
560 /********************************************************/
562 static void strcat_vprintf(char *buf, int buf_size, const char *fmt, va_list ap)
564 int len;
565 len = strlen(buf);
566 vsnprintf(buf + len, buf_size - len, fmt, ap);
569 static void strcat_printf(char *buf, int buf_size, const char *fmt, ...)
571 va_list ap;
572 va_start(ap, fmt);
573 strcat_vprintf(buf, buf_size, fmt, ap);
574 va_end(ap);
577 static void error1(TCCState *s1, int is_warning, const char *fmt, va_list ap)
579 char buf[2048];
580 BufferedFile **pf, *f;
582 buf[0] = '\0';
583 /* use upper file if inline ":asm:" or token ":paste:" */
584 for (f = file; f && f->filename[0] == ':'; f = f->prev)
586 if (f) {
587 for(pf = s1->include_stack; pf < s1->include_stack_ptr; pf++)
588 strcat_printf(buf, sizeof(buf), "In file included from %s:%d:\n",
589 (*pf)->filename, (*pf)->line_num);
590 if (f->line_num > 0) {
591 strcat_printf(buf, sizeof(buf), "%s:%d: ",
592 f->filename, f->line_num);
593 } else {
594 strcat_printf(buf, sizeof(buf), "%s: ",
595 f->filename);
597 } else {
598 strcat_printf(buf, sizeof(buf), "tcc: ");
600 if (is_warning)
601 strcat_printf(buf, sizeof(buf), "warning: ");
602 else
603 strcat_printf(buf, sizeof(buf), "error: ");
604 strcat_vprintf(buf, sizeof(buf), fmt, ap);
606 if (!s1->error_func) {
607 /* default case: stderr */
608 fprintf(stderr, "%s\n", buf);
609 } else {
610 s1->error_func(s1->error_opaque, buf);
612 if (!is_warning || s1->warn_error)
613 s1->nb_errors++;
616 LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque,
617 void (*error_func)(void *opaque, const char *msg))
619 s->error_opaque = error_opaque;
620 s->error_func = error_func;
623 /* error without aborting current compilation */
624 PUB_FUNC void tcc_error_noabort(const char *fmt, ...)
626 TCCState *s1 = tcc_state;
627 va_list ap;
629 va_start(ap, fmt);
630 error1(s1, 0, fmt, ap);
631 va_end(ap);
634 PUB_FUNC void tcc_error(const char *fmt, ...)
636 TCCState *s1 = tcc_state;
637 va_list ap;
639 va_start(ap, fmt);
640 error1(s1, 0, fmt, ap);
641 va_end(ap);
642 /* better than nothing: in some cases, we accept to handle errors */
643 if (s1->error_set_jmp_enabled) {
644 longjmp(s1->error_jmp_buf, 1);
645 } else {
646 /* XXX: eliminate this someday */
647 exit(1);
651 PUB_FUNC void tcc_warning(const char *fmt, ...)
653 TCCState *s1 = tcc_state;
654 va_list ap;
656 if (s1->warn_none)
657 return;
659 va_start(ap, fmt);
660 error1(s1, 1, fmt, ap);
661 va_end(ap);
664 /********************************************************/
665 /* I/O layer */
667 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen)
669 BufferedFile *bf;
670 int buflen = initlen ? initlen : IO_BUF_SIZE;
672 bf = tcc_malloc(sizeof(BufferedFile) + buflen);
673 bf->buf_ptr = bf->buffer;
674 bf->buf_end = bf->buffer + initlen;
675 bf->buf_end[0] = CH_EOB; /* put eob symbol */
676 pstrcpy(bf->filename, sizeof(bf->filename), filename);
677 #ifdef _WIN32
678 normalize_slashes(bf->filename);
679 #endif
680 bf->line_num = 1;
681 bf->ifndef_macro = 0;
682 bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
683 bf->fd = -1;
684 bf->prev = file;
685 file = bf;
688 ST_FUNC void tcc_close(void)
690 BufferedFile *bf = file;
691 if (bf->fd > 0) {
692 close(bf->fd);
693 total_lines += bf->line_num;
695 file = bf->prev;
696 tcc_free(bf);
699 ST_FUNC int tcc_open(TCCState *s1, const char *filename)
701 int fd;
702 if (strcmp(filename, "-") == 0)
703 fd = 0, filename = "stdin";
704 else
705 fd = open(filename, O_RDONLY | O_BINARY);
706 if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3)
707 printf("%s %*s%s\n", fd < 0 ? "nf":"->",
708 (int)(s1->include_stack_ptr - s1->include_stack), "", filename);
709 if (fd < 0)
710 return -1;
712 tcc_open_bf(s1, filename, 0);
713 file->fd = fd;
714 return fd;
717 /* compile the C file opened in 'file'. Return non zero if errors. */
718 static int tcc_compile(TCCState *s1)
720 Sym *define_start;
721 SValue *pvtop;
722 char buf[512];
723 volatile int section_sym;
725 #ifdef INC_DEBUG
726 printf("%s: **** new file\n", file->filename);
727 #endif
728 preprocess_init(s1);
730 cur_text_section = NULL;
731 funcname = "";
732 anon_sym = SYM_FIRST_ANOM;
734 /* file info: full path + filename */
735 section_sym = 0; /* avoid warning */
736 if (s1->do_debug) {
737 section_sym = put_elf_sym(symtab_section, 0, 0,
738 ELFW(ST_INFO)(STB_LOCAL, STT_SECTION), 0,
739 text_section->sh_num, NULL);
740 getcwd(buf, sizeof(buf));
741 #ifdef _WIN32
742 normalize_slashes(buf);
743 #endif
744 pstrcat(buf, sizeof(buf), "/");
745 put_stabs_r(buf, N_SO, 0, 0,
746 text_section->data_offset, text_section, section_sym);
747 put_stabs_r(file->filename, N_SO, 0, 0,
748 text_section->data_offset, text_section, section_sym);
750 /* an elf symbol of type STT_FILE must be put so that STB_LOCAL
751 symbols can be safely used */
752 put_elf_sym(symtab_section, 0, 0,
753 ELFW(ST_INFO)(STB_LOCAL, STT_FILE), 0,
754 SHN_ABS, file->filename);
756 /* define some often used types */
757 int_type.t = VT_INT;
759 char_pointer_type.t = VT_BYTE;
760 mk_pointer(&char_pointer_type);
762 #if PTR_SIZE == 4
763 size_type.t = VT_INT;
764 #else
765 size_type.t = VT_LLONG;
766 #endif
768 func_old_type.t = VT_FUNC;
769 func_old_type.ref = sym_push(SYM_FIELD, &int_type, FUNC_CDECL, FUNC_OLD);
770 #ifdef TCC_TARGET_ARM
771 arm_init(s1);
772 #endif
774 #if 0
775 /* define 'void *alloca(unsigned int)' builtin function */
777 Sym *s1;
779 p = anon_sym++;
780 sym = sym_push(p, mk_pointer(VT_VOID), FUNC_CDECL, FUNC_NEW);
781 s1 = sym_push(SYM_FIELD, VT_UNSIGNED | VT_INT, 0, 0);
782 s1->next = NULL;
783 sym->next = s1;
784 sym_push(TOK_alloca, VT_FUNC | (p << VT_STRUCT_SHIFT), VT_CONST, 0);
786 #endif
788 define_start = define_stack;
789 nocode_wanted = 1;
791 if (setjmp(s1->error_jmp_buf) == 0) {
792 s1->nb_errors = 0;
793 s1->error_set_jmp_enabled = 1;
795 ch = file->buf_ptr[0];
796 tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
797 parse_flags = PARSE_FLAG_PREPROCESS | PARSE_FLAG_TOK_NUM;
798 pvtop = vtop;
799 next();
800 decl(VT_CONST);
801 if (tok != TOK_EOF)
802 expect("declaration");
803 if (pvtop != vtop)
804 tcc_warning("internal compiler error: vstack leak? (%d)", vtop - pvtop);
806 /* end of translation unit info */
807 if (s1->do_debug) {
808 put_stabs_r(NULL, N_SO, 0, 0,
809 text_section->data_offset, text_section, section_sym);
813 s1->error_set_jmp_enabled = 0;
815 /* reset define stack, but leave -Dsymbols (may be incorrect if
816 they are undefined) */
817 free_defines(define_start);
819 gen_inline_functions();
821 sym_pop(&global_stack, NULL);
822 sym_pop(&local_stack, NULL);
824 return s1->nb_errors != 0 ? -1 : 0;
827 LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
829 int len, ret;
830 len = strlen(str);
832 tcc_open_bf(s, "<string>", len);
833 memcpy(file->buffer, str, len);
834 ret = tcc_compile(s);
835 tcc_close();
836 return ret;
839 /* define a preprocessor symbol. A value can also be provided with the '=' operator */
840 LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value)
842 int len1, len2;
843 /* default value */
844 if (!value)
845 value = "1";
846 len1 = strlen(sym);
847 len2 = strlen(value);
849 /* init file structure */
850 tcc_open_bf(s1, "<define>", len1 + len2 + 1);
851 memcpy(file->buffer, sym, len1);
852 file->buffer[len1] = ' ';
853 memcpy(file->buffer + len1 + 1, value, len2);
855 /* parse with define parser */
856 ch = file->buf_ptr[0];
857 next_nomacro();
858 parse_define();
860 tcc_close();
863 /* undefine a preprocessor symbol */
864 LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
866 TokenSym *ts;
867 Sym *s;
868 ts = tok_alloc(sym, strlen(sym));
869 s = define_find(ts->tok);
870 /* undefine symbol by putting an invalid name */
871 if (s)
872 define_undef(s);
873 tcc_free(ts);
876 /* cleanup all static data used during compilation */
877 static void tcc_cleanup(void)
879 int i, n;
880 if (NULL == tcc_state)
881 return;
882 tcc_state = NULL;
884 /* free -D defines */
885 free_defines(NULL);
887 /* free tokens */
888 n = tok_ident - TOK_IDENT;
889 for(i = 0; i < n; i++)
890 tcc_free(table_ident[i]);
891 tcc_free(table_ident);
892 table_ident = NULL;
894 /* free sym_pools */
895 dynarray_reset(&sym_pools, &nb_sym_pools);
896 /* string buffer */
897 cstr_free(&tokcstr);
898 /* reset symbol stack */
899 sym_free_first = NULL;
900 /* cleanup from error/setjmp */
901 macro_ptr = NULL;
904 LIBTCCAPI TCCState *tcc_new(void)
906 TCCState *s;
907 char buffer[100];
908 int a,b,c;
910 tcc_cleanup();
912 s = tcc_mallocz(sizeof(TCCState));
913 if (!s)
914 return NULL;
915 tcc_state = s;
916 #ifdef _WIN32
917 tcc_set_lib_path_w32(s);
918 #else
919 tcc_set_lib_path(s, CONFIG_TCCDIR);
920 #endif
921 s->output_type = 0;
922 preprocess_new();
923 s->include_stack_ptr = s->include_stack;
925 /* we add dummy defines for some special macros to speed up tests
926 and to have working defined() */
927 define_push(TOK___LINE__, MACRO_OBJ, NULL, NULL);
928 define_push(TOK___FILE__, MACRO_OBJ, NULL, NULL);
929 define_push(TOK___DATE__, MACRO_OBJ, NULL, NULL);
930 define_push(TOK___TIME__, MACRO_OBJ, NULL, NULL);
932 /* define __TINYC__ 92X */
933 sscanf(TCC_VERSION, "%d.%d.%d", &a, &b, &c);
934 sprintf(buffer, "%d", a*10000 + b*100 + c);
935 tcc_define_symbol(s, "__TINYC__", buffer);
937 /* standard defines */
938 tcc_define_symbol(s, "__STDC__", NULL);
939 tcc_define_symbol(s, "__STDC_VERSION__", "199901L");
940 tcc_define_symbol(s, "__STDC_HOSTED__", NULL);
942 /* target defines */
943 #if defined(TCC_TARGET_I386)
944 tcc_define_symbol(s, "__i386__", NULL);
945 tcc_define_symbol(s, "__i386", NULL);
946 tcc_define_symbol(s, "i386", NULL);
947 #elif defined(TCC_TARGET_X86_64)
948 tcc_define_symbol(s, "__x86_64__", NULL);
949 #elif defined(TCC_TARGET_ARM)
950 tcc_define_symbol(s, "__ARM_ARCH_4__", NULL);
951 tcc_define_symbol(s, "__arm_elf__", NULL);
952 tcc_define_symbol(s, "__arm_elf", NULL);
953 tcc_define_symbol(s, "arm_elf", NULL);
954 tcc_define_symbol(s, "__arm__", NULL);
955 tcc_define_symbol(s, "__arm", NULL);
956 tcc_define_symbol(s, "arm", NULL);
957 tcc_define_symbol(s, "__APCS_32__", NULL);
958 tcc_define_symbol(s, "__ARMEL__", NULL);
959 #if defined(TCC_ARM_EABI)
960 tcc_define_symbol(s, "__ARM_EABI__", NULL);
961 #endif
962 #if defined(TCC_ARM_HARDFLOAT)
963 s->float_abi = ARM_HARD_FLOAT;
964 tcc_define_symbol(s, "__ARM_PCS_VFP", NULL);
965 #else
966 s->float_abi = ARM_SOFTFP_FLOAT;
967 #endif
968 #elif defined(TCC_TARGET_ARM64)
969 tcc_define_symbol(s, "__aarch64__", NULL);
970 #endif
972 #ifdef TCC_TARGET_PE
973 tcc_define_symbol(s, "_WIN32", NULL);
974 # ifdef TCC_TARGET_X86_64
975 tcc_define_symbol(s, "_WIN64", NULL);
976 # endif
977 #else
978 tcc_define_symbol(s, "__unix__", NULL);
979 tcc_define_symbol(s, "__unix", NULL);
980 tcc_define_symbol(s, "unix", NULL);
981 # if defined(__linux)
982 tcc_define_symbol(s, "__linux__", NULL);
983 tcc_define_symbol(s, "__linux", NULL);
984 # endif
985 # if defined(__FreeBSD__)
986 # define str(s) #s
987 tcc_define_symbol(s, "__FreeBSD__", str( __FreeBSD__));
988 # undef str
989 # endif
990 # if defined(__FreeBSD_kernel__)
991 tcc_define_symbol(s, "__FreeBSD_kernel__", NULL);
992 # endif
993 #endif
995 /* TinyCC & gcc defines */
996 #if defined TCC_TARGET_PE && defined TCC_TARGET_X86_64
997 tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long");
998 tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long");
999 #else
1000 tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
1001 tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
1002 #endif
1004 #ifdef TCC_TARGET_PE
1005 tcc_define_symbol(s, "__WCHAR_TYPE__", "unsigned short");
1006 tcc_define_symbol(s, "__WINT_TYPE__", "unsigned short");
1007 #else
1008 tcc_define_symbol(s, "__WCHAR_TYPE__", "int");
1009 /* wint_t is unsigned int by default, but (signed) int on BSDs
1010 and unsigned short on windows. Other OSes might have still
1011 other conventions, sigh. */
1012 #if defined(__FreeBSD__) || defined (__FreeBSD_kernel__)
1013 tcc_define_symbol(s, "__WINT_TYPE__", "int");
1014 #else
1015 tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int");
1016 #endif
1017 #endif
1019 #ifndef TCC_TARGET_PE
1020 /* glibc defines */
1021 tcc_define_symbol(s, "__REDIRECT(name, proto, alias)", "name proto __asm__ (#alias)");
1022 tcc_define_symbol(s, "__REDIRECT_NTH(name, proto, alias)", "name proto __asm__ (#alias) __THROW");
1023 /* paths for crt objects */
1024 tcc_split_path(s, (void ***)&s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX);
1025 #endif
1027 /* no section zero */
1028 dynarray_add((void ***)&s->sections, &s->nb_sections, NULL);
1030 /* create standard sections */
1031 text_section = new_section(s, ".text", SHT_PROGBITS, SHF_ALLOC | SHF_EXECINSTR);
1032 data_section = new_section(s, ".data", SHT_PROGBITS, SHF_ALLOC | SHF_WRITE);
1033 bss_section = new_section(s, ".bss", SHT_NOBITS, SHF_ALLOC | SHF_WRITE);
1035 /* symbols are always generated for linking stage */
1036 symtab_section = new_symtab(s, ".symtab", SHT_SYMTAB, 0,
1037 ".strtab",
1038 ".hashtab", SHF_PRIVATE);
1039 strtab_section = symtab_section->link;
1040 s->symtab = symtab_section;
1042 /* private symbol table for dynamic symbols */
1043 s->dynsymtab_section = new_symtab(s, ".dynsymtab", SHT_SYMTAB, SHF_PRIVATE,
1044 ".dynstrtab",
1045 ".dynhashtab", SHF_PRIVATE);
1046 s->alacarte_link = 1;
1047 s->nocommon = 1;
1048 s->warn_implicit_function_declaration = 1;
1050 #ifdef CHAR_IS_UNSIGNED
1051 s->char_is_unsigned = 1;
1052 #endif
1053 /* enable this if you want symbols with leading underscore on windows: */
1054 #if 0 /* def TCC_TARGET_PE */
1055 s->leading_underscore = 1;
1056 #endif
1057 #ifdef TCC_TARGET_I386
1058 s->seg_size = 32;
1059 #endif
1060 #ifdef TCC_IS_NATIVE
1061 s->runtime_main = "main";
1062 #endif
1063 return s;
1066 LIBTCCAPI void tcc_delete(TCCState *s1)
1068 int i;
1070 tcc_cleanup();
1072 /* free all sections */
1073 for(i = 1; i < s1->nb_sections; i++)
1074 free_section(s1->sections[i]);
1075 dynarray_reset(&s1->sections, &s1->nb_sections);
1077 for(i = 0; i < s1->nb_priv_sections; i++)
1078 free_section(s1->priv_sections[i]);
1079 dynarray_reset(&s1->priv_sections, &s1->nb_priv_sections);
1081 /* free any loaded DLLs */
1082 #ifdef TCC_IS_NATIVE
1083 for ( i = 0; i < s1->nb_loaded_dlls; i++) {
1084 DLLReference *ref = s1->loaded_dlls[i];
1085 if ( ref->handle )
1086 dlclose(ref->handle);
1088 #endif
1090 /* free loaded dlls array */
1091 dynarray_reset(&s1->loaded_dlls, &s1->nb_loaded_dlls);
1093 /* free library paths */
1094 dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
1095 dynarray_reset(&s1->crt_paths, &s1->nb_crt_paths);
1097 /* free include paths */
1098 dynarray_reset(&s1->cached_includes, &s1->nb_cached_includes);
1099 dynarray_reset(&s1->include_paths, &s1->nb_include_paths);
1100 dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths);
1102 tcc_free(s1->tcc_lib_path);
1103 tcc_free(s1->soname);
1104 tcc_free(s1->rpath);
1105 tcc_free(s1->init_symbol);
1106 tcc_free(s1->fini_symbol);
1107 tcc_free(s1->outfile);
1108 tcc_free(s1->deps_outfile);
1109 dynarray_reset(&s1->files, &s1->nb_files);
1110 dynarray_reset(&s1->target_deps, &s1->nb_target_deps);
1112 #ifdef TCC_IS_NATIVE
1113 # ifdef HAVE_SELINUX
1114 munmap (s1->write_mem, s1->mem_size);
1115 munmap (s1->runtime_mem, s1->mem_size);
1116 # else
1117 tcc_free(s1->runtime_mem);
1118 # endif
1119 #endif
1121 if(s1->sym_attrs) tcc_free(s1->sym_attrs);
1123 tcc_free(s1);
1126 LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
1128 tcc_split_path(s, (void ***)&s->include_paths, &s->nb_include_paths, pathname);
1129 return 0;
1132 LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
1134 tcc_split_path(s, (void ***)&s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
1135 return 0;
1138 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
1140 const char *ext;
1141 ElfW(Ehdr) ehdr;
1142 int fd, ret, size;
1144 /* find source file type with extension */
1145 ext = tcc_fileextension(filename);
1146 if (ext[0])
1147 ext++;
1149 #ifdef CONFIG_TCC_ASM
1150 /* if .S file, define __ASSEMBLER__ like gcc does */
1151 if (!strcmp(ext, "S"))
1152 tcc_define_symbol(s1, "__ASSEMBLER__", NULL);
1153 #endif
1155 /* open the file */
1156 ret = tcc_open(s1, filename);
1157 if (ret < 0) {
1158 if (flags & AFF_PRINT_ERROR)
1159 tcc_error_noabort("file '%s' not found", filename);
1160 return ret;
1163 /* update target deps */
1164 dynarray_add((void ***)&s1->target_deps, &s1->nb_target_deps,
1165 tcc_strdup(filename));
1167 if (flags & AFF_PREPROCESS) {
1168 ret = tcc_preprocess(s1);
1169 goto the_end;
1172 if (!ext[0] || !PATHCMP(ext, "c") || !PATHCMP(ext, "i")) {
1173 /* C file assumed */
1174 ret = tcc_compile(s1);
1175 goto the_end;
1178 #ifdef CONFIG_TCC_ASM
1179 if (!strcmp(ext, "S")) {
1180 /* preprocessed assembler */
1181 ret = tcc_assemble(s1, 1);
1182 goto the_end;
1185 if (!strcmp(ext, "s")) {
1186 /* non preprocessed assembler */
1187 ret = tcc_assemble(s1, 0);
1188 goto the_end;
1190 #endif
1192 fd = file->fd;
1193 /* assume executable format: auto guess file type */
1194 size = read(fd, &ehdr, sizeof(ehdr));
1195 lseek(fd, 0, SEEK_SET);
1196 if (size <= 0) {
1197 tcc_error_noabort("could not read header");
1198 goto the_end;
1201 if (size == sizeof(ehdr) &&
1202 ehdr.e_ident[0] == ELFMAG0 &&
1203 ehdr.e_ident[1] == ELFMAG1 &&
1204 ehdr.e_ident[2] == ELFMAG2 &&
1205 ehdr.e_ident[3] == ELFMAG3) {
1207 /* do not display line number if error */
1208 file->line_num = 0;
1209 if (ehdr.e_type == ET_REL) {
1210 ret = tcc_load_object_file(s1, fd, 0);
1211 goto the_end;
1214 #ifndef TCC_TARGET_PE
1215 if (ehdr.e_type == ET_DYN) {
1216 if (s1->output_type == TCC_OUTPUT_MEMORY) {
1217 #ifdef TCC_IS_NATIVE
1218 void *h;
1219 h = dlopen(filename, RTLD_GLOBAL | RTLD_LAZY);
1220 if (h)
1221 #endif
1222 ret = 0;
1223 } else {
1224 ret = tcc_load_dll(s1, fd, filename,
1225 (flags & AFF_REFERENCED_DLL) != 0);
1227 goto the_end;
1229 #endif
1230 tcc_error_noabort("unrecognized ELF file");
1231 goto the_end;
1234 if (memcmp((char *)&ehdr, ARMAG, 8) == 0) {
1235 file->line_num = 0; /* do not display line number if error */
1236 ret = tcc_load_archive(s1, fd);
1237 goto the_end;
1240 #ifdef TCC_TARGET_COFF
1241 if (*(uint16_t *)(&ehdr) == COFF_C67_MAGIC) {
1242 ret = tcc_load_coff(s1, fd);
1243 goto the_end;
1245 #endif
1247 #ifdef TCC_TARGET_PE
1248 ret = pe_load_file(s1, filename, fd);
1249 #else
1250 /* as GNU ld, consider it is an ld script if not recognized */
1251 ret = tcc_load_ldscript(s1);
1252 #endif
1253 if (ret < 0)
1254 tcc_error_noabort("unrecognized file type");
1256 the_end:
1257 tcc_close();
1258 return ret;
1261 LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename)
1263 if (s->output_type == TCC_OUTPUT_PREPROCESS)
1264 return tcc_add_file_internal(s, filename, AFF_PRINT_ERROR | AFF_PREPROCESS);
1265 else
1266 return tcc_add_file_internal(s, filename, AFF_PRINT_ERROR);
1269 LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
1271 tcc_split_path(s, (void ***)&s->library_paths, &s->nb_library_paths, pathname);
1272 return 0;
1275 static int tcc_add_library_internal(TCCState *s, const char *fmt,
1276 const char *filename, int flags, char **paths, int nb_paths)
1278 char buf[1024];
1279 int i;
1281 for(i = 0; i < nb_paths; i++) {
1282 snprintf(buf, sizeof(buf), fmt, paths[i], filename);
1283 if (tcc_add_file_internal(s, buf, flags) == 0)
1284 return 0;
1286 return -1;
1289 /* find and load a dll. Return non zero if not found */
1290 /* XXX: add '-rpath' option support ? */
1291 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags)
1293 return tcc_add_library_internal(s, "%s/%s", filename, flags,
1294 s->library_paths, s->nb_library_paths);
1297 ST_FUNC int tcc_add_crt(TCCState *s, const char *filename)
1299 if (-1 == tcc_add_library_internal(s, "%s/%s",
1300 filename, 0, s->crt_paths, s->nb_crt_paths))
1301 tcc_error_noabort("file '%s' not found", filename);
1302 return 0;
1305 /* the library name is the same as the argument of the '-l' option */
1306 LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
1308 #ifdef TCC_TARGET_PE
1309 const char *libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
1310 const char **pp = s->static_link ? libs + 4 : libs;
1311 #else
1312 const char *libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
1313 const char **pp = s->static_link ? libs + 1 : libs;
1314 #endif
1315 while (*pp) {
1316 if (0 == tcc_add_library_internal(s, *pp,
1317 libraryname, 0, s->library_paths, s->nb_library_paths))
1318 return 0;
1319 ++pp;
1321 return -1;
1324 LIBTCCAPI int tcc_add_symbol(TCCState *s, const char *name, const void *val)
1326 #ifdef TCC_TARGET_PE
1327 /* On x86_64 'val' might not be reachable with a 32bit offset.
1328 So it is handled here as if it were in a DLL. */
1329 pe_putimport(s, 0, name, (uintptr_t)val);
1330 #else
1331 add_elf_sym(symtab_section, (uintptr_t)val, 0,
1332 ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
1333 SHN_ABS, name);
1334 #endif
1335 return 0;
1338 LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
1340 s->output_type = output_type;
1341 if (output_type == TCC_OUTPUT_PREPROCESS)
1342 print_defines();
1344 if (!s->nostdinc) {
1345 /* default include paths */
1346 /* -isystem paths have already been handled */
1347 tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS);
1350 /* if bound checking, then add corresponding sections */
1351 #ifdef CONFIG_TCC_BCHECK
1352 if (s->do_bounds_check) {
1353 /* define symbol */
1354 tcc_define_symbol(s, "__BOUNDS_CHECKING_ON", NULL);
1355 /* create bounds sections */
1356 bounds_section = new_section(s, ".bounds",
1357 SHT_PROGBITS, SHF_ALLOC);
1358 lbounds_section = new_section(s, ".lbounds",
1359 SHT_PROGBITS, SHF_ALLOC);
1361 #endif
1363 if (s->char_is_unsigned) {
1364 tcc_define_symbol(s, "__CHAR_UNSIGNED__", NULL);
1367 /* add debug sections */
1368 if (s->do_debug) {
1369 /* stab symbols */
1370 stab_section = new_section(s, ".stab", SHT_PROGBITS, 0);
1371 stab_section->sh_entsize = sizeof(Stab_Sym);
1372 stabstr_section = new_section(s, ".stabstr", SHT_STRTAB, 0);
1373 put_elf_str(stabstr_section, "");
1374 stab_section->link = stabstr_section;
1375 /* put first entry */
1376 put_stabs("", 0, 0, 0, 0);
1379 tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
1380 #ifdef TCC_TARGET_PE
1381 # ifdef _WIN32
1382 tcc_add_systemdir(s);
1383 # endif
1384 #else
1385 /* add libc crt1/crti objects */
1386 if ((output_type == TCC_OUTPUT_EXE || output_type == TCC_OUTPUT_DLL) &&
1387 !s->nostdlib) {
1388 if (output_type != TCC_OUTPUT_DLL)
1389 tcc_add_crt(s, "crt1.o");
1390 tcc_add_crt(s, "crti.o");
1392 #endif
1393 return 0;
1396 LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
1398 tcc_free(s->tcc_lib_path);
1399 s->tcc_lib_path = tcc_strdup(path);
1402 #define WD_ALL 0x0001 /* warning is activated when using -Wall */
1403 #define FD_INVERT 0x0002 /* invert value before storing */
1405 typedef struct FlagDef {
1406 uint16_t offset;
1407 uint16_t flags;
1408 const char *name;
1409 } FlagDef;
1411 static const FlagDef warning_defs[] = {
1412 { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
1413 { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
1414 { offsetof(TCCState, warn_error), 0, "error" },
1415 { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL,
1416 "implicit-function-declaration" },
1419 ST_FUNC int set_flag(TCCState *s, const FlagDef *flags, int nb_flags,
1420 const char *name, int value)
1422 int i;
1423 const FlagDef *p;
1424 const char *r;
1426 r = name;
1427 if (r[0] == 'n' && r[1] == 'o' && r[2] == '-') {
1428 r += 3;
1429 value = !value;
1431 for(i = 0, p = flags; i < nb_flags; i++, p++) {
1432 if (!strcmp(r, p->name))
1433 goto found;
1435 return -1;
1436 found:
1437 if (p->flags & FD_INVERT)
1438 value = !value;
1439 *(int *)((uint8_t *)s + p->offset) = value;
1440 return 0;
1443 /* set/reset a warning */
1444 static int tcc_set_warning(TCCState *s, const char *warning_name, int value)
1446 int i;
1447 const FlagDef *p;
1449 if (!strcmp(warning_name, "all")) {
1450 for(i = 0, p = warning_defs; i < countof(warning_defs); i++, p++) {
1451 if (p->flags & WD_ALL)
1452 *(int *)((uint8_t *)s + p->offset) = 1;
1454 return 0;
1455 } else {
1456 return set_flag(s, warning_defs, countof(warning_defs),
1457 warning_name, value);
1461 static const FlagDef flag_defs[] = {
1462 { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" },
1463 { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" },
1464 { offsetof(TCCState, nocommon), FD_INVERT, "common" },
1465 { offsetof(TCCState, leading_underscore), 0, "leading-underscore" },
1466 { offsetof(TCCState, ms_extensions), 0, "ms-extensions" },
1469 /* set/reset a flag */
1470 static int tcc_set_flag(TCCState *s, const char *flag_name, int value)
1472 return set_flag(s, flag_defs, countof(flag_defs),
1473 flag_name, value);
1477 static int strstart(const char *val, const char **str)
1479 const char *p, *q;
1480 p = *str;
1481 q = val;
1482 while (*q) {
1483 if (*p != *q)
1484 return 0;
1485 p++;
1486 q++;
1488 *str = p;
1489 return 1;
1492 /* Like strstart, but automatically takes into account that ld options can
1494 * - start with double or single dash (e.g. '--soname' or '-soname')
1495 * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so'
1496 * or '-Wl,-soname=x.so')
1498 * you provide `val` always in 'option[=]' form (no leading -)
1500 static int link_option(const char *str, const char *val, const char **ptr)
1502 const char *p, *q;
1504 /* there should be 1 or 2 dashes */
1505 if (*str++ != '-')
1506 return 0;
1507 if (*str == '-')
1508 str++;
1510 /* then str & val should match (potentialy up to '=') */
1511 p = str;
1512 q = val;
1514 while (*q != '\0' && *q != '=') {
1515 if (*p != *q)
1516 return 0;
1517 p++;
1518 q++;
1521 /* '=' near eos means ',' or '=' is ok */
1522 if (*q == '=') {
1523 if (*p != ',' && *p != '=')
1524 return 0;
1525 p++;
1526 q++;
1529 if (ptr)
1530 *ptr = p;
1531 return 1;
1534 static const char *skip_linker_arg(const char **str)
1536 const char *s1 = *str;
1537 const char *s2 = strchr(s1, ',');
1538 *str = s2 ? s2++ : (s2 = s1 + strlen(s1));
1539 return s2;
1542 static char *copy_linker_arg(const char *p)
1544 const char *q = p;
1545 skip_linker_arg(&q);
1546 return pstrncpy(tcc_malloc(q - p + 1), p, q - p);
1549 /* set linker options */
1550 static int tcc_set_linker(TCCState *s, const char *option)
1552 while (option && *option) {
1554 const char *p = option;
1555 char *end = NULL;
1556 int ignoring = 0;
1558 if (link_option(option, "Bsymbolic", &p)) {
1559 s->symbolic = 1;
1560 } else if (link_option(option, "nostdlib", &p)) {
1561 s->nostdlib = 1;
1562 } else if (link_option(option, "fini=", &p)) {
1563 s->fini_symbol = copy_linker_arg(p);
1564 ignoring = 1;
1565 } else if (link_option(option, "image-base=", &p)
1566 || link_option(option, "Ttext=", &p)) {
1567 s->text_addr = strtoull(p, &end, 16);
1568 s->has_text_addr = 1;
1569 } else if (link_option(option, "init=", &p)) {
1570 s->init_symbol = copy_linker_arg(p);
1571 ignoring = 1;
1572 } else if (link_option(option, "oformat=", &p)) {
1573 #if defined(TCC_TARGET_PE)
1574 if (strstart("pe-", &p)) {
1575 #elif defined(TCC_TARGET_ARM64) || defined(TCC_TARGET_X86_64)
1576 if (strstart("elf64-", &p)) {
1577 #else
1578 if (strstart("elf32-", &p)) {
1579 #endif
1580 s->output_format = TCC_OUTPUT_FORMAT_ELF;
1581 } else if (!strcmp(p, "binary")) {
1582 s->output_format = TCC_OUTPUT_FORMAT_BINARY;
1583 #ifdef TCC_TARGET_COFF
1584 } else if (!strcmp(p, "coff")) {
1585 s->output_format = TCC_OUTPUT_FORMAT_COFF;
1586 #endif
1587 } else
1588 goto err;
1590 } else if (link_option(option, "as-needed", &p)) {
1591 ignoring = 1;
1592 } else if (link_option(option, "O", &p)) {
1593 ignoring = 1;
1594 } else if (link_option(option, "rpath=", &p)) {
1595 s->rpath = copy_linker_arg(p);
1596 } else if (link_option(option, "section-alignment=", &p)) {
1597 s->section_align = strtoul(p, &end, 16);
1598 } else if (link_option(option, "soname=", &p)) {
1599 s->soname = copy_linker_arg(p);
1600 #ifdef TCC_TARGET_PE
1601 } else if (link_option(option, "file-alignment=", &p)) {
1602 s->pe_file_align = strtoul(p, &end, 16);
1603 } else if (link_option(option, "stack=", &p)) {
1604 s->pe_stack_size = strtoul(p, &end, 10);
1605 } else if (link_option(option, "subsystem=", &p)) {
1606 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
1607 if (!strcmp(p, "native")) {
1608 s->pe_subsystem = 1;
1609 } else if (!strcmp(p, "console")) {
1610 s->pe_subsystem = 3;
1611 } else if (!strcmp(p, "gui")) {
1612 s->pe_subsystem = 2;
1613 } else if (!strcmp(p, "posix")) {
1614 s->pe_subsystem = 7;
1615 } else if (!strcmp(p, "efiapp")) {
1616 s->pe_subsystem = 10;
1617 } else if (!strcmp(p, "efiboot")) {
1618 s->pe_subsystem = 11;
1619 } else if (!strcmp(p, "efiruntime")) {
1620 s->pe_subsystem = 12;
1621 } else if (!strcmp(p, "efirom")) {
1622 s->pe_subsystem = 13;
1623 #elif defined(TCC_TARGET_ARM)
1624 if (!strcmp(p, "wince")) {
1625 s->pe_subsystem = 9;
1626 #endif
1627 } else
1628 goto err;
1629 #endif
1630 } else
1631 goto err;
1633 if (ignoring && s->warn_unsupported) err: {
1634 char buf[100], *e;
1635 pstrcpy(buf, sizeof buf, e = copy_linker_arg(option)), tcc_free(e);
1636 if (ignoring)
1637 tcc_warning("unsupported linker option '%s'", buf);
1638 else
1639 tcc_error("unsupported linker option '%s'", buf);
1641 option = skip_linker_arg(&p);
1643 return 0;
1646 typedef struct TCCOption {
1647 const char *name;
1648 uint16_t index;
1649 uint16_t flags;
1650 } TCCOption;
1652 enum {
1653 TCC_OPTION_HELP,
1654 TCC_OPTION_I,
1655 TCC_OPTION_D,
1656 TCC_OPTION_U,
1657 TCC_OPTION_P,
1658 TCC_OPTION_L,
1659 TCC_OPTION_B,
1660 TCC_OPTION_l,
1661 TCC_OPTION_bench,
1662 TCC_OPTION_bt,
1663 TCC_OPTION_b,
1664 TCC_OPTION_g,
1665 TCC_OPTION_c,
1666 TCC_OPTION_dumpversion,
1667 TCC_OPTION_d,
1668 TCC_OPTION_float_abi,
1669 TCC_OPTION_static,
1670 TCC_OPTION_std,
1671 TCC_OPTION_shared,
1672 TCC_OPTION_soname,
1673 TCC_OPTION_o,
1674 TCC_OPTION_r,
1675 TCC_OPTION_s,
1676 TCC_OPTION_Wl,
1677 TCC_OPTION_W,
1678 TCC_OPTION_O,
1679 TCC_OPTION_m,
1680 TCC_OPTION_f,
1681 TCC_OPTION_isystem,
1682 TCC_OPTION_nostdinc,
1683 TCC_OPTION_nostdlib,
1684 TCC_OPTION_print_search_dirs,
1685 TCC_OPTION_rdynamic,
1686 TCC_OPTION_pedantic,
1687 TCC_OPTION_pthread,
1688 TCC_OPTION_run,
1689 TCC_OPTION_v,
1690 TCC_OPTION_w,
1691 TCC_OPTION_pipe,
1692 TCC_OPTION_E,
1693 TCC_OPTION_MD,
1694 TCC_OPTION_MF,
1695 TCC_OPTION_x,
1698 #define TCC_OPTION_HAS_ARG 0x0001
1699 #define TCC_OPTION_NOSEP 0x0002 /* cannot have space before option and arg */
1701 static const TCCOption tcc_options[] = {
1702 { "h", TCC_OPTION_HELP, 0 },
1703 { "-help", TCC_OPTION_HELP, 0 },
1704 { "?", TCC_OPTION_HELP, 0 },
1705 { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
1706 { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
1707 { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
1708 { "P", TCC_OPTION_P, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1709 { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
1710 { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
1711 { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1712 { "bench", TCC_OPTION_bench, 0 },
1713 #ifdef CONFIG_TCC_BACKTRACE
1714 { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG },
1715 #endif
1716 #ifdef CONFIG_TCC_BCHECK
1717 { "b", TCC_OPTION_b, 0 },
1718 #endif
1719 { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1720 { "c", TCC_OPTION_c, 0 },
1721 { "dumpversion", TCC_OPTION_dumpversion, 0},
1722 { "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1723 #ifdef TCC_TARGET_ARM
1724 { "mfloat-abi", TCC_OPTION_float_abi, TCC_OPTION_HAS_ARG },
1725 #endif
1726 { "static", TCC_OPTION_static, 0 },
1727 { "std", TCC_OPTION_std, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1728 { "shared", TCC_OPTION_shared, 0 },
1729 { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
1730 { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
1731 { "pedantic", TCC_OPTION_pedantic, 0},
1732 { "pthread", TCC_OPTION_pthread, 0},
1733 { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1734 { "rdynamic", TCC_OPTION_rdynamic, 0 },
1735 { "r", TCC_OPTION_r, 0 },
1736 { "s", TCC_OPTION_s, 0 },
1737 { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1738 { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1739 { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1740 { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG },
1741 { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1742 { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
1743 { "nostdinc", TCC_OPTION_nostdinc, 0 },
1744 { "nostdlib", TCC_OPTION_nostdlib, 0 },
1745 { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
1746 { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1747 { "w", TCC_OPTION_w, 0 },
1748 { "pipe", TCC_OPTION_pipe, 0},
1749 { "E", TCC_OPTION_E, 0},
1750 { "MD", TCC_OPTION_MD, 0},
1751 { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
1752 { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
1753 { NULL, 0, 0 },
1756 static void parse_option_D(TCCState *s1, const char *optarg)
1758 char *sym = tcc_strdup(optarg);
1759 char *value = strchr(sym, '=');
1760 if (value)
1761 *value++ = '\0';
1762 tcc_define_symbol(s1, sym, value);
1763 tcc_free(sym);
1766 PUB_FUNC int tcc_parse_args(TCCState *s, int argc, char **argv)
1768 const TCCOption *popt;
1769 const char *optarg, *r;
1770 int run = 0;
1771 int pthread = 0;
1772 int optind = 0;
1774 /* collect -Wl options for input such as "-Wl,-rpath -Wl,<path>" */
1775 CString linker_arg;
1776 cstr_new(&linker_arg);
1778 while (optind < argc) {
1780 r = argv[optind++];
1781 if (r[0] != '-' || r[1] == '\0') {
1782 /* add a new file */
1783 dynarray_add((void ***)&s->files, &s->nb_files, tcc_strdup(r));
1784 if (run) {
1785 optind--;
1786 /* argv[0] will be this file */
1787 break;
1789 continue;
1792 /* find option in table */
1793 for(popt = tcc_options; ; ++popt) {
1794 const char *p1 = popt->name;
1795 const char *r1 = r + 1;
1796 if (p1 == NULL)
1797 tcc_error("invalid option -- '%s'", r);
1798 if (!strstart(p1, &r1))
1799 continue;
1800 optarg = r1;
1801 if (popt->flags & TCC_OPTION_HAS_ARG) {
1802 if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
1803 if (optind >= argc)
1804 tcc_error("argument to '%s' is missing", r);
1805 optarg = argv[optind++];
1807 } else if (*r1 != '\0')
1808 continue;
1809 break;
1812 switch(popt->index) {
1813 case TCC_OPTION_HELP:
1814 return 0;
1815 case TCC_OPTION_I:
1816 if (tcc_add_include_path(s, optarg) < 0)
1817 tcc_error("too many include paths");
1818 break;
1819 case TCC_OPTION_D:
1820 parse_option_D(s, optarg);
1821 break;
1822 case TCC_OPTION_U:
1823 tcc_undefine_symbol(s, optarg);
1824 break;
1825 case TCC_OPTION_L:
1826 tcc_add_library_path(s, optarg);
1827 break;
1828 case TCC_OPTION_B:
1829 /* set tcc utilities path (mainly for tcc development) */
1830 tcc_set_lib_path(s, optarg);
1831 break;
1832 case TCC_OPTION_l:
1833 dynarray_add((void ***)&s->files, &s->nb_files, tcc_strdup(r));
1834 s->nb_libraries++;
1835 break;
1836 case TCC_OPTION_pthread:
1837 parse_option_D(s, "_REENTRANT");
1838 pthread = 1;
1839 break;
1840 case TCC_OPTION_bench:
1841 s->do_bench = 1;
1842 break;
1843 #ifdef CONFIG_TCC_BACKTRACE
1844 case TCC_OPTION_bt:
1845 tcc_set_num_callers(atoi(optarg));
1846 break;
1847 #endif
1848 #ifdef CONFIG_TCC_BCHECK
1849 case TCC_OPTION_b:
1850 s->do_bounds_check = 1;
1851 s->do_debug = 1;
1852 break;
1853 #endif
1854 case TCC_OPTION_g:
1855 s->do_debug = 1;
1856 break;
1857 case TCC_OPTION_c:
1858 if (s->output_type)
1859 tcc_warning("-c: some compiler action already specified (%d)", s->output_type);
1860 s->output_type = TCC_OUTPUT_OBJ;
1861 break;
1862 case TCC_OPTION_d:
1863 if (*optarg != 'D') {
1864 if (s->warn_unsupported)
1865 goto unsupported_option;
1866 tcc_error("invalid option -- '%s'", r);
1868 s->dflag = 1;
1869 break;
1870 #ifdef TCC_TARGET_ARM
1871 case TCC_OPTION_float_abi:
1872 /* tcc doesn't support soft float yet */
1873 if (!strcmp(optarg, "softfp")) {
1874 s->float_abi = ARM_SOFTFP_FLOAT;
1875 tcc_undefine_symbol(s, "__ARM_PCS_VFP");
1876 } else if (!strcmp(optarg, "hard"))
1877 s->float_abi = ARM_HARD_FLOAT;
1878 else
1879 tcc_error("unsupported float abi '%s'", optarg);
1880 break;
1881 #endif
1882 case TCC_OPTION_static:
1883 s->static_link = 1;
1884 break;
1885 case TCC_OPTION_std:
1886 /* silently ignore, a current purpose:
1887 allow to use a tcc as a reference compiler for "make test" */
1888 break;
1889 case TCC_OPTION_shared:
1890 if (s->output_type)
1891 tcc_warning("-shared: some compiler action already specified (%d)", s->output_type);
1892 s->output_type = TCC_OUTPUT_DLL;
1893 break;
1894 case TCC_OPTION_soname:
1895 s->soname = tcc_strdup(optarg);
1896 break;
1897 case TCC_OPTION_m:
1898 s->option_m = tcc_strdup(optarg);
1899 break;
1900 case TCC_OPTION_o:
1901 s->outfile = tcc_strdup(optarg);
1902 break;
1903 case TCC_OPTION_r:
1904 /* generate a .o merging several output files */
1905 if (s->output_type)
1906 tcc_warning("-r: some compiler action already specified (%d)", s->output_type);
1907 s->option_r = 1;
1908 s->output_type = TCC_OUTPUT_OBJ;
1909 break;
1910 case TCC_OPTION_isystem:
1911 tcc_add_sysinclude_path(s, optarg);
1912 break;
1913 case TCC_OPTION_nostdinc:
1914 s->nostdinc = 1;
1915 break;
1916 case TCC_OPTION_nostdlib:
1917 s->nostdlib = 1;
1918 break;
1919 case TCC_OPTION_print_search_dirs:
1920 s->print_search_dirs = 1;
1921 break;
1922 case TCC_OPTION_run:
1923 if (s->output_type)
1924 tcc_warning("-run: some compiler action already specified (%d)", s->output_type);
1925 s->output_type = TCC_OUTPUT_MEMORY;
1926 tcc_set_options(s, optarg);
1927 run = 1;
1928 break;
1929 case TCC_OPTION_v:
1930 do ++s->verbose; while (*optarg++ == 'v');
1931 break;
1932 case TCC_OPTION_f:
1933 if (tcc_set_flag(s, optarg, 1) < 0 && s->warn_unsupported)
1934 goto unsupported_option;
1935 break;
1936 case TCC_OPTION_W:
1937 if (tcc_set_warning(s, optarg, 1) < 0 &&
1938 s->warn_unsupported)
1939 goto unsupported_option;
1940 break;
1941 case TCC_OPTION_w:
1942 s->warn_none = 1;
1943 break;
1944 case TCC_OPTION_rdynamic:
1945 s->rdynamic = 1;
1946 break;
1947 case TCC_OPTION_Wl:
1948 if (linker_arg.size)
1949 --linker_arg.size, cstr_ccat(&linker_arg, ',');
1950 cstr_cat(&linker_arg, optarg);
1951 cstr_ccat(&linker_arg, '\0');
1952 break;
1953 case TCC_OPTION_E:
1954 if (s->output_type)
1955 tcc_warning("-E: some compiler action already specified (%d)", s->output_type);
1956 s->output_type = TCC_OUTPUT_PREPROCESS;
1957 break;
1958 case TCC_OPTION_P:
1959 s->Pflag = atoi(optarg) + 1;
1960 break;
1961 case TCC_OPTION_MD:
1962 s->gen_deps = 1;
1963 break;
1964 case TCC_OPTION_MF:
1965 s->deps_outfile = tcc_strdup(optarg);
1966 break;
1967 case TCC_OPTION_dumpversion:
1968 printf ("%s\n", TCC_VERSION);
1969 exit(0);
1970 case TCC_OPTION_O:
1971 case TCC_OPTION_pedantic:
1972 case TCC_OPTION_pipe:
1973 case TCC_OPTION_s:
1974 case TCC_OPTION_x:
1975 /* ignored */
1976 break;
1977 default:
1978 if (s->warn_unsupported) {
1979 unsupported_option:
1980 tcc_warning("unsupported option '%s'", r);
1982 break;
1986 if (pthread && s->output_type != TCC_OUTPUT_OBJ)
1987 tcc_set_options(s, "-lpthread");
1989 tcc_set_linker(s, (const char *)linker_arg.data);
1990 cstr_free(&linker_arg);
1992 return optind;
1995 LIBTCCAPI int tcc_set_options(TCCState *s, const char *str)
1997 const char *s1;
1998 char **argv, *arg;
1999 int argc, len;
2000 int ret;
2002 argc = 0, argv = NULL;
2003 for(;;) {
2004 while (is_space(*str))
2005 str++;
2006 if (*str == '\0')
2007 break;
2008 s1 = str;
2009 while (*str != '\0' && !is_space(*str))
2010 str++;
2011 len = str - s1;
2012 arg = tcc_malloc(len + 1);
2013 pstrncpy(arg, s1, len);
2014 dynarray_add((void ***)&argv, &argc, arg);
2016 ret = tcc_parse_args(s, argc, argv);
2017 dynarray_reset(&argv, &argc);
2018 return ret;
2021 PUB_FUNC void tcc_print_stats(TCCState *s, int64_t total_time)
2023 double tt;
2024 tt = (double)total_time / 1000000.0;
2025 if (tt < 0.001)
2026 tt = 0.001;
2027 if (total_bytes < 1)
2028 total_bytes = 1;
2029 printf("%d idents, %d lines, %d bytes, %0.3f s, %d lines/s, %0.1f MB/s\n",
2030 tok_ident - TOK_IDENT, total_lines, total_bytes,
2031 tt, (int)(total_lines / tt),
2032 total_bytes / tt / 1000000.0);
2035 PUB_FUNC void tcc_set_environment(TCCState *s)
2037 char * path;
2039 path = getenv("C_INCLUDE_PATH");
2040 if(path != NULL) {
2041 tcc_add_include_path(s, path);
2043 path = getenv("CPATH");
2044 if(path != NULL) {
2045 tcc_add_include_path(s, path);
2047 path = getenv("LIBRARY_PATH");
2048 if(path != NULL) {
2049 tcc_add_library_path(s, path);