Declare wint_t in <stddef.h> when needed
[tinycc.git] / libtcc.c
blobcc84cd705fe415e3f5ff731e1e9274b34c1e6590
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_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 */
68 /********************************************************/
69 #ifndef CONFIG_TCC_ASM
70 ST_FUNC void asm_instr(void)
72 tcc_error("inline asm() not supported");
74 ST_FUNC void asm_global_instr(void)
76 tcc_error("inline asm() not supported");
78 #endif
80 /********************************************************/
81 #ifdef _WIN32
82 static char *normalize_slashes(char *path)
84 char *p;
85 for (p = path; *p; ++p)
86 if (*p == '\\')
87 *p = '/';
88 return path;
91 static HMODULE tcc_module;
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)
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);
107 #ifdef TCC_TARGET_PE
108 static void tcc_add_systemdir(TCCState *s)
110 char buf[1000];
111 GetSystemDirectory(buf, sizeof buf);
112 tcc_add_library_path(s, normalize_slashes(buf));
114 #endif
116 #ifndef CONFIG_TCC_STATIC
117 void dlclose(void *p)
119 FreeLibrary((HMODULE)p);
121 #endif
123 #ifdef LIBTCC_AS_DLL
124 BOOL WINAPI DllMain (HANDLE hDll, DWORD dwReason, LPVOID lpReserved)
126 if (DLL_PROCESS_ATTACH == dwReason)
127 tcc_module = hDll;
128 return TRUE;
130 #endif
131 #endif
133 /********************************************************/
134 /* copy a string and truncate it. */
135 PUB_FUNC char *pstrcpy(char *buf, int buf_size, const char *s)
137 char *q, *q_end;
138 int c;
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;
149 *q = '\0';
151 return buf;
154 /* strcat and truncate. */
155 PUB_FUNC char *pstrcat(char *buf, int buf_size, const char *s)
157 int len;
158 len = strlen(buf);
159 if (len < buf_size)
160 pstrcpy(buf + len, buf_size - len, s);
161 return buf;
164 PUB_FUNC char *pstrncpy(char *out, const char *in, size_t num)
166 memcpy(out, in, num);
167 out[num] = '\0';
168 return out;
171 /* extract the basename of a file */
172 PUB_FUNC char *tcc_basename(const char *name)
174 char *p = strchr(name, 0);
175 while (p > name && !IS_DIRSEP(p[-1]))
176 --p;
177 return p;
180 /* extract extension part of a file
182 * (if no extension, return pointer to end-of-string)
184 PUB_FUNC char *tcc_fileextension (const char *name)
186 char *b = tcc_basename(name);
187 char *e = strrchr(b, '.');
188 return e ? e : strchr(b, 0);
191 /********************************************************/
192 /* memory management */
194 #undef free
195 #undef malloc
196 #undef realloc
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
204 PUB_FUNC void tcc_free(void *ptr)
206 #ifdef MEM_DEBUG
207 mem_cur_size -= malloc_usable_size(ptr);
208 #endif
209 free(ptr);
212 PUB_FUNC void *tcc_malloc(unsigned long size)
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;
226 PUB_FUNC void *tcc_mallocz(unsigned long size)
228 void *ptr;
229 ptr = tcc_malloc(size);
230 memset(ptr, 0, size);
231 return ptr;
234 PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size)
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;
252 PUB_FUNC char *tcc_strdup(const char *str)
254 char *ptr;
255 ptr = tcc_malloc(strlen(str) + 1);
256 strcpy(ptr, str);
257 return ptr;
260 PUB_FUNC void tcc_memstats(void)
262 #ifdef MEM_DEBUG
263 printf("memory: %d bytes, max = %d bytes\n", mem_cur_size, mem_max_size);
264 #endif
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)
271 /********************************************************/
272 /* dynarrays */
274 ST_FUNC void dynarray_add(void ***ptab, int *nb_ptr, void *data)
276 int nb, nb_alloc;
277 void **pp;
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;
290 pp[nb++] = data;
291 *nb_ptr = nb;
294 ST_FUNC void dynarray_reset(void *pp, int *n)
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;
304 static void tcc_split_path(TCCState *s, void ***p_ary, int *p_nb_ary, const char *in)
306 const char *p;
307 do {
308 int c;
309 CString str;
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);
321 cstr_ccat(&str, '\0');
322 dynarray_add(p_ary, p_nb_ary, str.data);
323 in = p+1;
324 } while (*p);
327 /********************************************************/
329 ST_FUNC Section *new_section(TCCState *s1, const char *name, int sh_type, int sh_flags)
331 Section *sec;
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;
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);
361 return sec;
364 static void free_section(Section *s)
366 tcc_free(s->data);
369 /* realloc section and set its content to zero */
370 ST_FUNC void section_realloc(Section *sec, unsigned long new_size)
372 unsigned long size;
373 unsigned char *data;
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;
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)
390 unsigned long offset, offset1;
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;
400 /* reserve at least 'size' bytes from section start */
401 ST_FUNC void section_reserve(Section *sec, unsigned long size)
403 if (size > sec->data_allocated)
404 section_realloc(sec, size);
405 if (size > sec->data_offset)
406 sec->data_offset = size;
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)
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;
420 /* sections are created as PROGBITS */
421 return new_section(s1, name, SHT_PROGBITS, SHF_ALLOC);
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)
430 int sym_type, sym_bind, sh_num, info, other;
431 ElfW(Sym) *esym;
432 const char *name;
433 char buf1[256];
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;
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;
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;
459 if (!sym->c) {
460 name = get_tok_str(sym->v, NULL);
461 #ifdef CONFIG_TCC_BCHECK
462 if (tcc_state->do_bounds_check) {
463 char buf[32];
465 /* XXX: avoid doing that for statics ? */
466 /* if bound checking is activated, we change some function
467 names by adding the "__bound" prefix */
468 switch(sym->v) {
469 #ifdef TCC_TARGET_PE
470 /* XXX: we rely only on malloc hooks */
471 case TOK_malloc:
472 case TOK_free:
473 case TOK_realloc:
474 case TOK_memalign:
475 case TOK_calloc:
476 #endif
477 case TOK_memcpy:
478 case TOK_memmove:
479 case TOK_memset:
480 case TOK_strlen:
481 case TOK_strcpy:
482 case TOK_alloca:
483 strcpy(buf, "__bound_");
484 strcat(buf, name);
485 name = buf;
486 break;
489 #endif
490 other = 0;
492 #ifdef TCC_TARGET_PE
493 if (sym->type.t & VT_EXPORT)
494 other |= 1;
495 if (sym_type == STT_FUNC && sym->type.ref) {
496 Sym *ref = sym->type.ref;
497 if (ref->a.func_export)
498 other |= 1;
499 if (ref->a.func_call == FUNC_STDCALL && can_add_underscore) {
500 sprintf(buf1, "_%s@%d", name, ref->a.func_args * PTR_SIZE);
501 name = buf1;
502 other |= 2;
503 can_add_underscore = 0;
505 } else {
506 if (find_elf_sym(tcc_state->dynsymtab_section, name))
507 other |= 4;
508 if (sym->type.t & VT_IMPORT)
509 other |= 4;
511 #endif
512 if (tcc_state->leading_underscore && can_add_underscore) {
513 buf1[0] = '_';
514 pstrcpy(buf1 + 1, sizeof(buf1) - 1, name);
515 name = buf1;
517 if (sym->asm_label) {
518 name = sym->asm_label;
520 info = ELFW(ST_INFO)(sym_bind, sym_type);
521 sym->c = add_elf_sym(symtab_section, value, size, info, other, sh_num, name);
522 } else {
523 esym = &((ElfW(Sym) *)symtab_section->data)[sym->c];
524 esym->st_value = value;
525 esym->st_size = size;
526 esym->st_shndx = sh_num;
530 ST_FUNC void put_extern_sym(Sym *sym, Section *section,
531 addr_t value, unsigned long size)
533 put_extern_sym2(sym, section, value, size, 1);
536 /* add a new relocation entry to symbol 'sym' in section 's' */
537 ST_FUNC void greloc(Section *s, Sym *sym, unsigned long offset, int type)
539 int c = 0;
540 if (sym) {
541 if (0 == sym->c)
542 put_extern_sym(sym, NULL, 0, 0);
543 c = sym->c;
545 /* now we can add ELF relocation info */
546 put_elf_reloc(symtab_section, s, offset, type, c);
549 /********************************************************/
551 static void strcat_vprintf(char *buf, int buf_size, const char *fmt, va_list ap)
553 int len;
554 len = strlen(buf);
555 vsnprintf(buf + len, buf_size - len, fmt, ap);
558 static void strcat_printf(char *buf, int buf_size, const char *fmt, ...)
560 va_list ap;
561 va_start(ap, fmt);
562 strcat_vprintf(buf, buf_size, fmt, ap);
563 va_end(ap);
566 static void error1(TCCState *s1, int is_warning, const char *fmt, va_list ap)
568 char buf[2048];
569 BufferedFile **pf, *f;
571 buf[0] = '\0';
572 /* use upper file if inline ":asm:" or token ":paste:" */
573 for (f = file; f && f->filename[0] == ':'; f = f->prev)
575 if (f) {
576 for(pf = s1->include_stack; pf < s1->include_stack_ptr; pf++)
577 strcat_printf(buf, sizeof(buf), "In file included from %s:%d:\n",
578 (*pf)->filename, (*pf)->line_num);
579 if (f->line_num > 0) {
580 strcat_printf(buf, sizeof(buf), "%s:%d: ",
581 f->filename, f->line_num);
582 } else {
583 strcat_printf(buf, sizeof(buf), "%s: ",
584 f->filename);
586 } else {
587 strcat_printf(buf, sizeof(buf), "tcc: ");
589 if (is_warning)
590 strcat_printf(buf, sizeof(buf), "warning: ");
591 else
592 strcat_printf(buf, sizeof(buf), "error: ");
593 strcat_vprintf(buf, sizeof(buf), fmt, ap);
595 if (!s1->error_func) {
596 /* default case: stderr */
597 fprintf(stderr, "%s\n", buf);
598 } else {
599 s1->error_func(s1->error_opaque, buf);
601 if (!is_warning || s1->warn_error)
602 s1->nb_errors++;
605 LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque,
606 void (*error_func)(void *opaque, const char *msg))
608 s->error_opaque = error_opaque;
609 s->error_func = error_func;
612 /* error without aborting current compilation */
613 PUB_FUNC void tcc_error_noabort(const char *fmt, ...)
615 TCCState *s1 = tcc_state;
616 va_list ap;
618 va_start(ap, fmt);
619 error1(s1, 0, fmt, ap);
620 va_end(ap);
623 PUB_FUNC void tcc_error(const char *fmt, ...)
625 TCCState *s1 = tcc_state;
626 va_list ap;
628 va_start(ap, fmt);
629 error1(s1, 0, fmt, ap);
630 va_end(ap);
631 /* better than nothing: in some cases, we accept to handle errors */
632 if (s1->error_set_jmp_enabled) {
633 longjmp(s1->error_jmp_buf, 1);
634 } else {
635 /* XXX: eliminate this someday */
636 exit(1);
640 PUB_FUNC void tcc_warning(const char *fmt, ...)
642 TCCState *s1 = tcc_state;
643 va_list ap;
645 if (s1->warn_none)
646 return;
648 va_start(ap, fmt);
649 error1(s1, 1, fmt, ap);
650 va_end(ap);
653 /********************************************************/
654 /* I/O layer */
656 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen)
658 BufferedFile *bf;
659 int buflen = initlen ? initlen : IO_BUF_SIZE;
661 bf = tcc_malloc(sizeof(BufferedFile) + buflen);
662 bf->buf_ptr = bf->buffer;
663 bf->buf_end = bf->buffer + initlen;
664 bf->buf_end[0] = CH_EOB; /* put eob symbol */
665 pstrcpy(bf->filename, sizeof(bf->filename), filename);
666 #ifdef _WIN32
667 normalize_slashes(bf->filename);
668 #endif
669 bf->line_num = 1;
670 bf->ifndef_macro = 0;
671 bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
672 bf->fd = -1;
673 bf->prev = file;
674 file = bf;
677 ST_FUNC void tcc_close(void)
679 BufferedFile *bf = file;
680 if (bf->fd > 0) {
681 close(bf->fd);
682 total_lines += bf->line_num;
684 file = bf->prev;
685 tcc_free(bf);
688 ST_FUNC int tcc_open(TCCState *s1, const char *filename)
690 int fd;
691 if (strcmp(filename, "-") == 0)
692 fd = 0, filename = "stdin";
693 else
694 fd = open(filename, O_RDONLY | O_BINARY);
695 if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3)
696 printf("%s %*s%s\n", fd < 0 ? "nf":"->",
697 (int)(s1->include_stack_ptr - s1->include_stack), "", filename);
698 if (fd < 0)
699 return -1;
701 tcc_open_bf(s1, filename, 0);
702 file->fd = fd;
703 return fd;
706 /* compile the C file opened in 'file'. Return non zero if errors. */
707 static int tcc_compile(TCCState *s1)
709 Sym *define_start;
710 SValue *pvtop;
711 char buf[512];
712 volatile int section_sym;
714 #ifdef INC_DEBUG
715 printf("%s: **** new file\n", file->filename);
716 #endif
717 preprocess_init(s1);
719 cur_text_section = NULL;
720 funcname = "";
721 anon_sym = SYM_FIRST_ANOM;
723 /* file info: full path + filename */
724 section_sym = 0; /* avoid warning */
725 if (s1->do_debug) {
726 section_sym = put_elf_sym(symtab_section, 0, 0,
727 ELFW(ST_INFO)(STB_LOCAL, STT_SECTION), 0,
728 text_section->sh_num, NULL);
729 getcwd(buf, sizeof(buf));
730 #ifdef _WIN32
731 normalize_slashes(buf);
732 #endif
733 pstrcat(buf, sizeof(buf), "/");
734 put_stabs_r(buf, N_SO, 0, 0,
735 text_section->data_offset, text_section, section_sym);
736 put_stabs_r(file->filename, N_SO, 0, 0,
737 text_section->data_offset, text_section, section_sym);
739 /* an elf symbol of type STT_FILE must be put so that STB_LOCAL
740 symbols can be safely used */
741 put_elf_sym(symtab_section, 0, 0,
742 ELFW(ST_INFO)(STB_LOCAL, STT_FILE), 0,
743 SHN_ABS, file->filename);
745 /* define some often used types */
746 int_type.t = VT_INT;
748 char_pointer_type.t = VT_BYTE;
749 mk_pointer(&char_pointer_type);
751 #if PTR_SIZE == 4
752 size_type.t = VT_INT;
753 #else
754 size_type.t = VT_LLONG;
755 #endif
757 func_old_type.t = VT_FUNC;
758 func_old_type.ref = sym_push(SYM_FIELD, &int_type, FUNC_CDECL, FUNC_OLD);
759 #ifdef TCC_TARGET_ARM
760 arm_init(s1);
761 #endif
763 #if 0
764 /* define 'void *alloca(unsigned int)' builtin function */
766 Sym *s1;
768 p = anon_sym++;
769 sym = sym_push(p, mk_pointer(VT_VOID), FUNC_CDECL, FUNC_NEW);
770 s1 = sym_push(SYM_FIELD, VT_UNSIGNED | VT_INT, 0, 0);
771 s1->next = NULL;
772 sym->next = s1;
773 sym_push(TOK_alloca, VT_FUNC | (p << VT_STRUCT_SHIFT), VT_CONST, 0);
775 #endif
777 define_start = define_stack;
778 nocode_wanted = 1;
780 if (setjmp(s1->error_jmp_buf) == 0) {
781 s1->nb_errors = 0;
782 s1->error_set_jmp_enabled = 1;
784 ch = file->buf_ptr[0];
785 tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
786 parse_flags = PARSE_FLAG_PREPROCESS | PARSE_FLAG_TOK_NUM;
787 pvtop = vtop;
788 next();
789 decl(VT_CONST);
790 if (tok != TOK_EOF)
791 expect("declaration");
792 if (pvtop != vtop)
793 tcc_warning("internal compiler error: vstack leak? (%d)", vtop - pvtop);
795 /* end of translation unit info */
796 if (s1->do_debug) {
797 put_stabs_r(NULL, N_SO, 0, 0,
798 text_section->data_offset, text_section, section_sym);
802 s1->error_set_jmp_enabled = 0;
804 /* reset define stack, but leave -Dsymbols (may be incorrect if
805 they are undefined) */
806 free_defines(define_start);
808 gen_inline_functions();
810 sym_pop(&global_stack, NULL);
811 sym_pop(&local_stack, NULL);
813 return s1->nb_errors != 0 ? -1 : 0;
816 LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
818 int len, ret;
819 len = strlen(str);
821 tcc_open_bf(s, "<string>", len);
822 memcpy(file->buffer, str, len);
823 ret = tcc_compile(s);
824 tcc_close();
825 return ret;
828 /* define a preprocessor symbol. A value can also be provided with the '=' operator */
829 LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value)
831 int len1, len2;
832 /* default value */
833 if (!value)
834 value = "1";
835 len1 = strlen(sym);
836 len2 = strlen(value);
838 /* init file structure */
839 tcc_open_bf(s1, "<define>", len1 + len2 + 1);
840 memcpy(file->buffer, sym, len1);
841 file->buffer[len1] = ' ';
842 memcpy(file->buffer + len1 + 1, value, len2);
844 /* parse with define parser */
845 ch = file->buf_ptr[0];
846 next_nomacro();
847 parse_define();
849 tcc_close();
852 /* undefine a preprocessor symbol */
853 LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
855 TokenSym *ts;
856 Sym *s;
857 ts = tok_alloc(sym, strlen(sym));
858 s = define_find(ts->tok);
859 /* undefine symbol by putting an invalid name */
860 if (s)
861 define_undef(s);
864 /* cleanup all static data used during compilation */
865 static void tcc_cleanup(void)
867 int i, n;
868 if (NULL == tcc_state)
869 return;
870 tcc_state = NULL;
872 /* free -D defines */
873 free_defines(NULL);
875 /* free tokens */
876 n = tok_ident - TOK_IDENT;
877 for(i = 0; i < n; i++)
878 tcc_free(table_ident[i]);
879 tcc_free(table_ident);
881 /* free sym_pools */
882 dynarray_reset(&sym_pools, &nb_sym_pools);
883 /* string buffer */
884 cstr_free(&tokcstr);
885 /* reset symbol stack */
886 sym_free_first = NULL;
887 /* cleanup from error/setjmp */
888 macro_ptr = NULL;
891 LIBTCCAPI TCCState *tcc_new(void)
893 TCCState *s;
894 char buffer[100];
895 int a,b,c;
897 tcc_cleanup();
899 s = tcc_mallocz(sizeof(TCCState));
900 if (!s)
901 return NULL;
902 tcc_state = s;
903 #ifdef _WIN32
904 tcc_set_lib_path_w32(s);
905 #else
906 tcc_set_lib_path(s, CONFIG_TCCDIR);
907 #endif
908 s->output_type = TCC_OUTPUT_MEMORY;
909 preprocess_new();
910 s->include_stack_ptr = s->include_stack;
912 /* we add dummy defines for some special macros to speed up tests
913 and to have working defined() */
914 define_push(TOK___LINE__, MACRO_OBJ, NULL, NULL);
915 define_push(TOK___FILE__, MACRO_OBJ, NULL, NULL);
916 define_push(TOK___DATE__, MACRO_OBJ, NULL, NULL);
917 define_push(TOK___TIME__, MACRO_OBJ, NULL, NULL);
919 /* define __TINYC__ 92X */
920 sscanf(TCC_VERSION, "%d.%d.%d", &a, &b, &c);
921 sprintf(buffer, "%d", a*10000 + b*100 + c);
922 tcc_define_symbol(s, "__TINYC__", buffer);
924 /* standard defines */
925 tcc_define_symbol(s, "__STDC__", NULL);
926 tcc_define_symbol(s, "__STDC_VERSION__", "199901L");
927 tcc_define_symbol(s, "__STDC_HOSTED__", NULL);
929 /* target defines */
930 #if defined(TCC_TARGET_I386)
931 tcc_define_symbol(s, "__i386__", NULL);
932 tcc_define_symbol(s, "__i386", NULL);
933 tcc_define_symbol(s, "i386", NULL);
934 #elif defined(TCC_TARGET_X86_64)
935 tcc_define_symbol(s, "__x86_64__", NULL);
936 #elif defined(TCC_TARGET_ARM)
937 tcc_define_symbol(s, "__ARM_ARCH_4__", NULL);
938 tcc_define_symbol(s, "__arm_elf__", NULL);
939 tcc_define_symbol(s, "__arm_elf", NULL);
940 tcc_define_symbol(s, "arm_elf", NULL);
941 tcc_define_symbol(s, "__arm__", NULL);
942 tcc_define_symbol(s, "__arm", NULL);
943 tcc_define_symbol(s, "arm", NULL);
944 tcc_define_symbol(s, "__APCS_32__", NULL);
945 tcc_define_symbol(s, "__ARMEL__", NULL);
946 #if defined(TCC_ARM_EABI)
947 tcc_define_symbol(s, "__ARM_EABI__", NULL);
948 #endif
949 #if defined(TCC_ARM_HARDFLOAT)
950 s->float_abi = ARM_HARD_FLOAT;
951 tcc_define_symbol(s, "__ARM_PCS_VFP", NULL);
952 #else
953 s->float_abi = ARM_SOFTFP_FLOAT;
954 #endif
955 #endif
957 #ifdef TCC_TARGET_PE
958 tcc_define_symbol(s, "_WIN32", NULL);
959 # ifdef TCC_TARGET_X86_64
960 tcc_define_symbol(s, "_WIN64", NULL);
961 # endif
962 #else
963 tcc_define_symbol(s, "__unix__", NULL);
964 tcc_define_symbol(s, "__unix", NULL);
965 tcc_define_symbol(s, "unix", NULL);
966 # if defined(__linux)
967 tcc_define_symbol(s, "__linux__", NULL);
968 tcc_define_symbol(s, "__linux", NULL);
969 # endif
970 # if defined(__FreeBSD__)
971 # define str(s) #s
972 tcc_define_symbol(s, "__FreeBSD__", str( __FreeBSD__));
973 # undef str
974 # endif
975 # if defined(__FreeBSD_kernel__)
976 tcc_define_symbol(s, "__FreeBSD_kernel__", NULL);
977 # endif
978 #endif
980 /* TinyCC & gcc defines */
981 #if defined TCC_TARGET_PE && defined TCC_TARGET_X86_64
982 tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long");
983 tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long");
984 #else
985 tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
986 tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
987 #endif
989 #ifdef TCC_TARGET_PE
990 tcc_define_symbol(s, "__WCHAR_TYPE__", "unsigned short");
991 tcc_define_symbol(s, "__WINT_TYPE__", "unsigned short");
992 #else
993 tcc_define_symbol(s, "__WCHAR_TYPE__", "int");
994 /* wint_t is unsigned int by default, but (signed) int on BSDs
995 and unsigned short on windows. Other OSes might have still
996 other conventions, sigh. */
997 #if defined(__FreeBSD__) || defined (__FreeBSD_kernel__)
998 tcc_define_symbol(s, "__WINT_TYPE__", "int");
999 #else
1000 tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int");
1001 #endif
1002 #endif
1004 #ifndef TCC_TARGET_PE
1005 /* glibc defines */
1006 tcc_define_symbol(s, "__REDIRECT(name, proto, alias)", "name proto __asm__ (#alias)");
1007 tcc_define_symbol(s, "__REDIRECT_NTH(name, proto, alias)", "name proto __asm__ (#alias) __THROW");
1008 /* paths for crt objects */
1009 tcc_split_path(s, (void ***)&s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX);
1010 #endif
1012 /* no section zero */
1013 dynarray_add((void ***)&s->sections, &s->nb_sections, NULL);
1015 /* create standard sections */
1016 text_section = new_section(s, ".text", SHT_PROGBITS, SHF_ALLOC | SHF_EXECINSTR);
1017 data_section = new_section(s, ".data", SHT_PROGBITS, SHF_ALLOC | SHF_WRITE);
1018 bss_section = new_section(s, ".bss", SHT_NOBITS, SHF_ALLOC | SHF_WRITE);
1020 /* symbols are always generated for linking stage */
1021 symtab_section = new_symtab(s, ".symtab", SHT_SYMTAB, 0,
1022 ".strtab",
1023 ".hashtab", SHF_PRIVATE);
1024 strtab_section = symtab_section->link;
1025 s->symtab = symtab_section;
1027 /* private symbol table for dynamic symbols */
1028 s->dynsymtab_section = new_symtab(s, ".dynsymtab", SHT_SYMTAB, SHF_PRIVATE,
1029 ".dynstrtab",
1030 ".dynhashtab", SHF_PRIVATE);
1031 s->alacarte_link = 1;
1032 s->nocommon = 1;
1033 s->section_align = ELF_PAGE_SIZE;
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;
1051 LIBTCCAPI void tcc_delete(TCCState *s1)
1053 int i;
1055 tcc_cleanup();
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);
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);
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);
1073 #endif
1075 /* free loaded dlls array */
1076 dynarray_reset(&s1->loaded_dlls, &s1->nb_loaded_dlls);
1078 /* free library paths */
1079 dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
1080 dynarray_reset(&s1->crt_paths, &s1->nb_crt_paths);
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);
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);
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
1106 if(s1->sym_attrs) tcc_free(s1->sym_attrs);
1108 tcc_free(s1);
1111 LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
1113 tcc_split_path(s, (void ***)&s->include_paths, &s->nb_include_paths, pathname);
1114 return 0;
1117 LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
1119 tcc_split_path(s, (void ***)&s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
1120 return 0;
1123 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
1125 const char *ext;
1126 ElfW(Ehdr) ehdr;
1127 int fd, ret, size;
1129 /* find source file type with extension */
1130 ext = tcc_fileextension(filename);
1131 if (ext[0])
1132 ext++;
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
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;
1148 /* update target deps */
1149 dynarray_add((void ***)&s1->target_deps, &s1->nb_target_deps,
1150 tcc_strdup(filename));
1152 if (flags & AFF_PREPROCESS) {
1153 ret = tcc_preprocess(s1);
1154 goto the_end;
1157 if (!ext[0] || !PATHCMP(ext, "c")) {
1158 /* C file assumed */
1159 ret = tcc_compile(s1);
1160 goto the_end;
1163 #ifdef CONFIG_TCC_ASM
1164 if (!strcmp(ext, "S")) {
1165 /* preprocessed assembler */
1166 ret = tcc_assemble(s1, 1);
1167 goto the_end;
1170 if (!strcmp(ext, "s")) {
1171 /* non preprocessed assembler */
1172 ret = tcc_assemble(s1, 0);
1173 goto the_end;
1175 #endif
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;
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) {
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;
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);
1212 goto the_end;
1214 #endif
1215 tcc_error_noabort("unrecognized ELF file");
1216 goto the_end;
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;
1225 #ifdef TCC_TARGET_COFF
1226 if (*(uint16_t *)(&ehdr) == COFF_C67_MAGIC) {
1227 ret = tcc_load_coff(s1, fd);
1228 goto the_end;
1230 #endif
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");
1241 the_end:
1242 tcc_close();
1243 return ret;
1246 LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename)
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);
1254 LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
1256 tcc_split_path(s, (void ***)&s->library_paths, &s->nb_library_paths, pathname);
1257 return 0;
1260 static int tcc_add_library_internal(TCCState *s, const char *fmt,
1261 const char *filename, int flags, char **paths, int nb_paths)
1263 char buf[1024];
1264 int i;
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;
1271 return -1;
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)
1278 return tcc_add_library_internal(s, "%s/%s", filename, flags,
1279 s->library_paths, s->nb_library_paths);
1282 ST_FUNC int tcc_add_crt(TCCState *s, const char *filename)
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;
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)
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;
1306 return -1;
1309 LIBTCCAPI int tcc_add_symbol(TCCState *s, const char *name, const void *val)
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 /* XXX: Same problem on linux but currently "solved" elsewhere
1317 via the rather dirty 'runtime_plt_and_got' hack. */
1318 add_elf_sym(symtab_section, (uintptr_t)val, 0,
1319 ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
1320 SHN_ABS, name);
1321 #endif
1322 return 0;
1325 LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
1327 s->output_type = output_type;
1329 if (!s->nostdinc) {
1330 /* default include paths */
1331 /* -isystem paths have already been handled */
1332 tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS);
1335 /* if bound checking, then add corresponding sections */
1336 #ifdef CONFIG_TCC_BCHECK
1337 if (s->do_bounds_check) {
1338 /* define symbol */
1339 tcc_define_symbol(s, "__BOUNDS_CHECKING_ON", NULL);
1340 /* create bounds sections */
1341 bounds_section = new_section(s, ".bounds",
1342 SHT_PROGBITS, SHF_ALLOC);
1343 lbounds_section = new_section(s, ".lbounds",
1344 SHT_PROGBITS, SHF_ALLOC);
1346 #endif
1348 if (s->char_is_unsigned) {
1349 tcc_define_symbol(s, "__CHAR_UNSIGNED__", NULL);
1352 /* add debug sections */
1353 if (s->do_debug) {
1354 /* stab symbols */
1355 stab_section = new_section(s, ".stab", SHT_PROGBITS, 0);
1356 stab_section->sh_entsize = sizeof(Stab_Sym);
1357 stabstr_section = new_section(s, ".stabstr", SHT_STRTAB, 0);
1358 put_elf_str(stabstr_section, "");
1359 stab_section->link = stabstr_section;
1360 /* put first entry */
1361 put_stabs("", 0, 0, 0, 0);
1364 tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
1365 #ifdef TCC_TARGET_PE
1366 # ifdef _WIN32
1367 tcc_add_systemdir(s);
1368 # endif
1369 #else
1370 /* add libc crt1/crti objects */
1371 if ((output_type == TCC_OUTPUT_EXE || output_type == TCC_OUTPUT_DLL) &&
1372 !s->nostdlib) {
1373 if (output_type != TCC_OUTPUT_DLL)
1374 tcc_add_crt(s, "crt1.o");
1375 tcc_add_crt(s, "crti.o");
1377 #endif
1378 return 0;
1381 LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
1383 tcc_free(s->tcc_lib_path);
1384 s->tcc_lib_path = tcc_strdup(path);
1387 #define WD_ALL 0x0001 /* warning is activated when using -Wall */
1388 #define FD_INVERT 0x0002 /* invert value before storing */
1390 typedef struct FlagDef {
1391 uint16_t offset;
1392 uint16_t flags;
1393 const char *name;
1394 } FlagDef;
1396 static const FlagDef warning_defs[] = {
1397 { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
1398 { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
1399 { offsetof(TCCState, warn_error), 0, "error" },
1400 { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL,
1401 "implicit-function-declaration" },
1404 ST_FUNC int set_flag(TCCState *s, const FlagDef *flags, int nb_flags,
1405 const char *name, int value)
1407 int i;
1408 const FlagDef *p;
1409 const char *r;
1411 r = name;
1412 if (r[0] == 'n' && r[1] == 'o' && r[2] == '-') {
1413 r += 3;
1414 value = !value;
1416 for(i = 0, p = flags; i < nb_flags; i++, p++) {
1417 if (!strcmp(r, p->name))
1418 goto found;
1420 return -1;
1421 found:
1422 if (p->flags & FD_INVERT)
1423 value = !value;
1424 *(int *)((uint8_t *)s + p->offset) = value;
1425 return 0;
1428 /* set/reset a warning */
1429 static int tcc_set_warning(TCCState *s, const char *warning_name, int value)
1431 int i;
1432 const FlagDef *p;
1434 if (!strcmp(warning_name, "all")) {
1435 for(i = 0, p = warning_defs; i < countof(warning_defs); i++, p++) {
1436 if (p->flags & WD_ALL)
1437 *(int *)((uint8_t *)s + p->offset) = 1;
1439 return 0;
1440 } else {
1441 return set_flag(s, warning_defs, countof(warning_defs),
1442 warning_name, value);
1446 static const FlagDef flag_defs[] = {
1447 { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" },
1448 { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" },
1449 { offsetof(TCCState, nocommon), FD_INVERT, "common" },
1450 { offsetof(TCCState, leading_underscore), 0, "leading-underscore" },
1453 /* set/reset a flag */
1454 static int tcc_set_flag(TCCState *s, const char *flag_name, int value)
1456 return set_flag(s, flag_defs, countof(flag_defs),
1457 flag_name, value);
1461 static int strstart(const char *val, const char **str)
1463 const char *p, *q;
1464 p = *str;
1465 q = val;
1466 while (*q) {
1467 if (*p != *q)
1468 return 0;
1469 p++;
1470 q++;
1472 *str = p;
1473 return 1;
1476 /* Like strstart, but automatically takes into account that ld options can
1478 * - start with double or single dash (e.g. '--soname' or '-soname')
1479 * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so'
1480 * or '-Wl,-soname=x.so')
1482 * you provide `val` always in 'option[=]' form (no leading -)
1484 static int link_option(const char *str, const char *val, const char **ptr)
1486 const char *p, *q;
1488 /* there should be 1 or 2 dashes */
1489 if (*str++ != '-')
1490 return 0;
1491 if (*str == '-')
1492 str++;
1494 /* then str & val should match (potentialy up to '=') */
1495 p = str;
1496 q = val;
1498 while (*q != '\0' && *q != '=') {
1499 if (*p != *q)
1500 return 0;
1501 p++;
1502 q++;
1505 /* '=' near eos means ',' or '=' is ok */
1506 if (*q == '=') {
1507 if (*p != ',' && *p != '=')
1508 return 0;
1509 p++;
1510 q++;
1513 if (ptr)
1514 *ptr = p;
1515 return 1;
1518 static const char *skip_linker_arg(const char **str)
1520 const char *s1 = *str;
1521 const char *s2 = strchr(s1, ',');
1522 *str = s2 ? s2++ : (s2 = s1 + strlen(s1));
1523 return s2;
1526 static char *copy_linker_arg(const char *p)
1528 const char *q = p;
1529 skip_linker_arg(&q);
1530 return pstrncpy(tcc_malloc(q - p + 1), p, q - p);
1533 /* set linker options */
1534 static int tcc_set_linker(TCCState *s, const char *option)
1536 while (option && *option) {
1538 const char *p = option;
1539 char *end = NULL;
1540 int ignoring = 0;
1542 if (link_option(option, "Bsymbolic", &p)) {
1543 s->symbolic = 1;
1544 } else if (link_option(option, "nostdlib", &p)) {
1545 s->nostdlib = 1;
1546 } else if (link_option(option, "fini=", &p)) {
1547 s->fini_symbol = copy_linker_arg(p);
1548 ignoring = 1;
1549 } else if (link_option(option, "image-base=", &p)
1550 || link_option(option, "Ttext=", &p)) {
1551 s->text_addr = strtoull(p, &end, 16);
1552 s->has_text_addr = 1;
1553 } else if (link_option(option, "init=", &p)) {
1554 s->init_symbol = copy_linker_arg(p);
1555 ignoring = 1;
1556 } else if (link_option(option, "oformat=", &p)) {
1557 #if defined(TCC_TARGET_PE)
1558 if (strstart("pe-", &p)) {
1559 #elif defined(TCC_TARGET_X86_64)
1560 if (strstart("elf64-", &p)) {
1561 #else
1562 if (strstart("elf32-", &p)) {
1563 #endif
1564 s->output_format = TCC_OUTPUT_FORMAT_ELF;
1565 } else if (!strcmp(p, "binary")) {
1566 s->output_format = TCC_OUTPUT_FORMAT_BINARY;
1567 #ifdef TCC_TARGET_COFF
1568 } else if (!strcmp(p, "coff")) {
1569 s->output_format = TCC_OUTPUT_FORMAT_COFF;
1570 #endif
1571 } else
1572 goto err;
1574 } else if (link_option(option, "as-needed", &p)) {
1575 ignoring = 1;
1576 } else if (link_option(option, "O", &p)) {
1577 ignoring = 1;
1578 } else if (link_option(option, "rpath=", &p)) {
1579 s->rpath = copy_linker_arg(p);
1580 } else if (link_option(option, "section-alignment=", &p)) {
1581 s->section_align = strtoul(p, &end, 16);
1582 } else if (link_option(option, "soname=", &p)) {
1583 s->soname = copy_linker_arg(p);
1584 #ifdef TCC_TARGET_PE
1585 } else if (link_option(option, "file-alignment=", &p)) {
1586 s->pe_file_align = strtoul(p, &end, 16);
1587 } else if (link_option(option, "stack=", &p)) {
1588 s->pe_stack_size = strtoul(p, &end, 10);
1589 } else if (link_option(option, "subsystem=", &p)) {
1590 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
1591 if (!strcmp(p, "native")) {
1592 s->pe_subsystem = 1;
1593 } else if (!strcmp(p, "console")) {
1594 s->pe_subsystem = 3;
1595 } else if (!strcmp(p, "gui")) {
1596 s->pe_subsystem = 2;
1597 } else if (!strcmp(p, "posix")) {
1598 s->pe_subsystem = 7;
1599 } else if (!strcmp(p, "efiapp")) {
1600 s->pe_subsystem = 10;
1601 } else if (!strcmp(p, "efiboot")) {
1602 s->pe_subsystem = 11;
1603 } else if (!strcmp(p, "efiruntime")) {
1604 s->pe_subsystem = 12;
1605 } else if (!strcmp(p, "efirom")) {
1606 s->pe_subsystem = 13;
1607 #elif defined(TCC_TARGET_ARM)
1608 if (!strcmp(p, "wince")) {
1609 s->pe_subsystem = 9;
1610 #endif
1611 } else
1612 goto err;
1613 #endif
1614 } else
1615 goto err;
1617 if (ignoring && s->warn_unsupported) err: {
1618 char buf[100], *e;
1619 pstrcpy(buf, sizeof buf, e = copy_linker_arg(option)), tcc_free(e);
1620 if (ignoring)
1621 tcc_warning("unsupported linker option '%s'", buf);
1622 else
1623 tcc_error("unsupported linker option '%s'", buf);
1625 option = skip_linker_arg(&p);
1627 return 0;
1630 typedef struct TCCOption {
1631 const char *name;
1632 uint16_t index;
1633 uint16_t flags;
1634 } TCCOption;
1636 enum {
1637 TCC_OPTION_HELP,
1638 TCC_OPTION_I,
1639 TCC_OPTION_D,
1640 TCC_OPTION_U,
1641 TCC_OPTION_L,
1642 TCC_OPTION_B,
1643 TCC_OPTION_l,
1644 TCC_OPTION_bench,
1645 TCC_OPTION_bt,
1646 TCC_OPTION_b,
1647 TCC_OPTION_g,
1648 TCC_OPTION_c,
1649 TCC_OPTION_float_abi,
1650 TCC_OPTION_static,
1651 TCC_OPTION_shared,
1652 TCC_OPTION_soname,
1653 TCC_OPTION_o,
1654 TCC_OPTION_r,
1655 TCC_OPTION_s,
1656 TCC_OPTION_Wl,
1657 TCC_OPTION_W,
1658 TCC_OPTION_O,
1659 TCC_OPTION_m,
1660 TCC_OPTION_f,
1661 TCC_OPTION_isystem,
1662 TCC_OPTION_nostdinc,
1663 TCC_OPTION_nostdlib,
1664 TCC_OPTION_print_search_dirs,
1665 TCC_OPTION_rdynamic,
1666 TCC_OPTION_pedantic,
1667 TCC_OPTION_pthread,
1668 TCC_OPTION_run,
1669 TCC_OPTION_norunsrc,
1670 TCC_OPTION_v,
1671 TCC_OPTION_w,
1672 TCC_OPTION_pipe,
1673 TCC_OPTION_E,
1674 TCC_OPTION_MD,
1675 TCC_OPTION_MF,
1676 TCC_OPTION_x,
1677 TCC_OPTION_dumpversion,
1680 #define TCC_OPTION_HAS_ARG 0x0001
1681 #define TCC_OPTION_NOSEP 0x0002 /* cannot have space before option and arg */
1683 static const TCCOption tcc_options[] = {
1684 { "h", TCC_OPTION_HELP, 0 },
1685 { "-help", TCC_OPTION_HELP, 0 },
1686 { "?", TCC_OPTION_HELP, 0 },
1687 { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
1688 { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
1689 { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
1690 { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
1691 { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
1692 { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1693 { "bench", TCC_OPTION_bench, 0 },
1694 #ifdef CONFIG_TCC_BACKTRACE
1695 { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG },
1696 #endif
1697 #ifdef CONFIG_TCC_BCHECK
1698 { "b", TCC_OPTION_b, 0 },
1699 #endif
1700 { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1701 { "c", TCC_OPTION_c, 0 },
1702 #ifdef TCC_TARGET_ARM
1703 { "mfloat-abi", TCC_OPTION_float_abi, TCC_OPTION_HAS_ARG },
1704 #endif
1705 { "static", TCC_OPTION_static, 0 },
1706 { "shared", TCC_OPTION_shared, 0 },
1707 { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
1708 { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
1709 { "pedantic", TCC_OPTION_pedantic, 0},
1710 { "pthread", TCC_OPTION_pthread, 0},
1711 { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1712 { "norunsrc", TCC_OPTION_norunsrc, 0 },
1713 { "rdynamic", TCC_OPTION_rdynamic, 0 },
1714 { "r", TCC_OPTION_r, 0 },
1715 { "s", TCC_OPTION_s, 0 },
1716 { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1717 { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1718 { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1719 { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG },
1720 { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1721 { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
1722 { "nostdinc", TCC_OPTION_nostdinc, 0 },
1723 { "nostdlib", TCC_OPTION_nostdlib, 0 },
1724 { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
1725 { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1726 { "w", TCC_OPTION_w, 0 },
1727 { "pipe", TCC_OPTION_pipe, 0},
1728 { "E", TCC_OPTION_E, 0},
1729 { "MD", TCC_OPTION_MD, 0},
1730 { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
1731 { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
1732 { "dumpversion", TCC_OPTION_dumpversion, 0},
1733 { NULL, 0, 0 },
1736 static void parse_option_D(TCCState *s1, const char *optarg)
1738 char *sym = tcc_strdup(optarg);
1739 char *value = strchr(sym, '=');
1740 if (value)
1741 *value++ = '\0';
1742 tcc_define_symbol(s1, sym, value);
1743 tcc_free(sym);
1746 PUB_FUNC int tcc_parse_args(TCCState *s, int argc, char **argv)
1748 const TCCOption *popt;
1749 const char *optarg, *r;
1750 int run = 0;
1751 int norunsrc = 0;
1752 int pthread = 0;
1753 int optind = 0;
1755 /* collect -Wl options for input such as "-Wl,-rpath -Wl,<path>" */
1756 CString linker_arg;
1757 cstr_new(&linker_arg);
1759 while (optind < argc) {
1761 r = argv[optind++];
1762 if (r[0] != '-' || r[1] == '\0') {
1763 /* add a new file */
1764 if (!run || !norunsrc)
1765 dynarray_add((void ***)&s->files, &s->nb_files, tcc_strdup(r));
1766 if (run) {
1767 optind--;
1768 /* argv[0] will be this file */
1769 break;
1771 continue;
1774 /* find option in table */
1775 for(popt = tcc_options; ; ++popt) {
1776 const char *p1 = popt->name;
1777 const char *r1 = r + 1;
1778 if (p1 == NULL)
1779 tcc_error("invalid option -- '%s'", r);
1780 if (!strstart(p1, &r1))
1781 continue;
1782 optarg = r1;
1783 if (popt->flags & TCC_OPTION_HAS_ARG) {
1784 if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
1785 if (optind >= argc)
1786 tcc_error("argument to '%s' is missing", r);
1787 optarg = argv[optind++];
1789 } else if (*r1 != '\0')
1790 continue;
1791 break;
1794 switch(popt->index) {
1795 case TCC_OPTION_HELP:
1796 return 0;
1797 case TCC_OPTION_I:
1798 if (tcc_add_include_path(s, optarg) < 0)
1799 tcc_error("too many include paths");
1800 break;
1801 case TCC_OPTION_D:
1802 parse_option_D(s, optarg);
1803 break;
1804 case TCC_OPTION_U:
1805 tcc_undefine_symbol(s, optarg);
1806 break;
1807 case TCC_OPTION_L:
1808 tcc_add_library_path(s, optarg);
1809 break;
1810 case TCC_OPTION_B:
1811 /* set tcc utilities path (mainly for tcc development) */
1812 tcc_set_lib_path(s, optarg);
1813 break;
1814 case TCC_OPTION_l:
1815 dynarray_add((void ***)&s->files, &s->nb_files, tcc_strdup(r));
1816 s->nb_libraries++;
1817 break;
1818 case TCC_OPTION_pthread:
1819 parse_option_D(s, "_REENTRANT");
1820 pthread = 1;
1821 break;
1822 case TCC_OPTION_bench:
1823 s->do_bench = 1;
1824 break;
1825 #ifdef CONFIG_TCC_BACKTRACE
1826 case TCC_OPTION_bt:
1827 tcc_set_num_callers(atoi(optarg));
1828 break;
1829 #endif
1830 #ifdef CONFIG_TCC_BCHECK
1831 case TCC_OPTION_b:
1832 s->do_bounds_check = 1;
1833 s->do_debug = 1;
1834 break;
1835 #endif
1836 case TCC_OPTION_g:
1837 s->do_debug = 1;
1838 break;
1839 case TCC_OPTION_c:
1840 s->output_type = TCC_OUTPUT_OBJ;
1841 break;
1842 #ifdef TCC_TARGET_ARM
1843 case TCC_OPTION_float_abi:
1844 /* tcc doesn't support soft float yet */
1845 if (!strcmp(optarg, "softfp")) {
1846 s->float_abi = ARM_SOFTFP_FLOAT;
1847 tcc_undefine_symbol(s, "__ARM_PCS_VFP");
1848 } else if (!strcmp(optarg, "hard"))
1849 s->float_abi = ARM_HARD_FLOAT;
1850 else
1851 tcc_error("unsupported float abi '%s'", optarg);
1852 break;
1853 #endif
1854 case TCC_OPTION_static:
1855 s->static_link = 1;
1856 break;
1857 case TCC_OPTION_shared:
1858 s->output_type = TCC_OUTPUT_DLL;
1859 break;
1860 case TCC_OPTION_soname:
1861 s->soname = tcc_strdup(optarg);
1862 break;
1863 case TCC_OPTION_m:
1864 s->option_m = tcc_strdup(optarg);
1865 break;
1866 case TCC_OPTION_o:
1867 s->outfile = tcc_strdup(optarg);
1868 break;
1869 case TCC_OPTION_r:
1870 /* generate a .o merging several output files */
1871 s->option_r = 1;
1872 s->output_type = TCC_OUTPUT_OBJ;
1873 break;
1874 case TCC_OPTION_isystem:
1875 tcc_add_sysinclude_path(s, optarg);
1876 break;
1877 case TCC_OPTION_nostdinc:
1878 s->nostdinc = 1;
1879 break;
1880 case TCC_OPTION_nostdlib:
1881 s->nostdlib = 1;
1882 break;
1883 case TCC_OPTION_print_search_dirs:
1884 s->print_search_dirs = 1;
1885 break;
1886 case TCC_OPTION_run:
1887 s->output_type = TCC_OUTPUT_MEMORY;
1888 tcc_set_options(s, optarg);
1889 run = 1;
1890 break;
1891 case TCC_OPTION_norunsrc:
1892 norunsrc = 1;
1893 break;
1894 case TCC_OPTION_v:
1895 do ++s->verbose; while (*optarg++ == 'v');
1896 break;
1897 case TCC_OPTION_f:
1898 if (tcc_set_flag(s, optarg, 1) < 0 && s->warn_unsupported)
1899 goto unsupported_option;
1900 break;
1901 case TCC_OPTION_W:
1902 if (tcc_set_warning(s, optarg, 1) < 0 &&
1903 s->warn_unsupported)
1904 goto unsupported_option;
1905 break;
1906 case TCC_OPTION_w:
1907 s->warn_none = 1;
1908 break;
1909 case TCC_OPTION_rdynamic:
1910 s->rdynamic = 1;
1911 break;
1912 case TCC_OPTION_Wl:
1913 if (linker_arg.size)
1914 --linker_arg.size, cstr_ccat(&linker_arg, ',');
1915 cstr_cat(&linker_arg, optarg);
1916 cstr_ccat(&linker_arg, '\0');
1917 break;
1918 case TCC_OPTION_E:
1919 s->output_type = TCC_OUTPUT_PREPROCESS;
1920 break;
1921 case TCC_OPTION_MD:
1922 s->gen_deps = 1;
1923 break;
1924 case TCC_OPTION_MF:
1925 s->deps_outfile = tcc_strdup(optarg);
1926 break;
1927 case TCC_OPTION_dumpversion:
1928 printf ("%s\n", TCC_VERSION);
1929 exit(0);
1930 case TCC_OPTION_O:
1931 case TCC_OPTION_pedantic:
1932 case TCC_OPTION_pipe:
1933 case TCC_OPTION_s:
1934 case TCC_OPTION_x:
1935 /* ignored */
1936 break;
1937 default:
1938 if (s->warn_unsupported) {
1939 unsupported_option:
1940 tcc_warning("unsupported option '%s'", r);
1942 break;
1946 if (pthread && s->output_type != TCC_OUTPUT_OBJ)
1947 tcc_set_options(s, "-lpthread");
1949 tcc_set_linker(s, (const char *)linker_arg.data);
1950 cstr_free(&linker_arg);
1952 return optind;
1955 LIBTCCAPI int tcc_set_options(TCCState *s, const char *str)
1957 const char *s1;
1958 char **argv, *arg;
1959 int argc, len;
1960 int ret;
1962 argc = 0, argv = NULL;
1963 for(;;) {
1964 while (is_space(*str))
1965 str++;
1966 if (*str == '\0')
1967 break;
1968 s1 = str;
1969 while (*str != '\0' && !is_space(*str))
1970 str++;
1971 len = str - s1;
1972 arg = tcc_malloc(len + 1);
1973 pstrncpy(arg, s1, len);
1974 dynarray_add((void ***)&argv, &argc, arg);
1976 ret = tcc_parse_args(s, argc, argv);
1977 dynarray_reset(&argv, &argc);
1978 return ret;
1981 PUB_FUNC void tcc_print_stats(TCCState *s, int64_t total_time)
1983 double tt;
1984 tt = (double)total_time / 1000000.0;
1985 if (tt < 0.001)
1986 tt = 0.001;
1987 if (total_bytes < 1)
1988 total_bytes = 1;
1989 printf("%d idents, %d lines, %d bytes, %0.3f s, %d lines/s, %0.1f MB/s\n",
1990 tok_ident - TOK_IDENT, total_lines, total_bytes,
1991 tt, (int)(total_lines / tt),
1992 total_bytes / tt / 1000000.0);
1995 PUB_FUNC void tcc_set_environment(TCCState *s)
1997 char * path;
1999 path = getenv("C_INCLUDE_PATH");
2000 if(path != NULL) {
2001 tcc_add_include_path(s, path);
2003 path = getenv("CPATH");
2004 if(path != NULL) {
2005 tcc_add_include_path(s, path);
2007 path = getenv("LIBRARY_PATH");
2008 if(path != NULL) {
2009 tcc_add_library_path(s, path);