Rein in unintended external functions on Windows.
[tinycc.git] / libtcc.c
blob827d3c021348a6847462ca89cf8f8d0623940a04
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 static 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 ST_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 ST_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 ST_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 #ifndef MEM_DEBUG
203 PUB_FUNC void tcc_free(void *ptr)
205 free(ptr);
208 PUB_FUNC void *tcc_malloc(unsigned long size)
210 void *ptr;
211 ptr = malloc(size);
212 if (!ptr && size)
213 tcc_error("memory full (malloc)");
214 return ptr;
217 PUB_FUNC void *tcc_mallocz(unsigned long size)
219 void *ptr;
220 ptr = tcc_malloc(size);
221 memset(ptr, 0, size);
222 return ptr;
225 PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size)
227 void *ptr1;
228 ptr1 = realloc(ptr, size);
229 if (!ptr1 && size)
230 tcc_error("memory full (realloc)");
231 return ptr1;
234 PUB_FUNC char *tcc_strdup(const char *str)
236 char *ptr;
237 ptr = tcc_malloc(strlen(str) + 1);
238 strcpy(ptr, str);
239 return ptr;
242 PUB_FUNC void tcc_memstats(int bench)
246 #else
248 #define MEM_DEBUG_MAGIC1 0xFEEDDEB1
249 #define MEM_DEBUG_MAGIC2 0xFEEDDEB2
250 #define MEM_DEBUG_FILE_LEN 15
252 struct mem_debug_header {
253 size_t magic1;
254 size_t size;
255 struct mem_debug_header *prev;
256 struct mem_debug_header *next;
257 size_t line_num;
258 char file_name[MEM_DEBUG_FILE_LEN + 1];
259 size_t magic2;
262 typedef struct mem_debug_header mem_debug_header_t;
264 static mem_debug_header_t *mem_debug_chain;
265 static size_t mem_cur_size;
266 static size_t mem_max_size;
268 PUB_FUNC void *tcc_malloc_debug(unsigned long size, const char *file, int line)
270 void *ptr;
271 int ofs;
273 mem_debug_header_t *header;
275 ptr = malloc(sizeof(mem_debug_header_t) + size);
276 if (!ptr)
277 tcc_error("memory full (malloc)");
279 mem_cur_size += size;
280 if (mem_cur_size > mem_max_size)
281 mem_max_size = mem_cur_size;
283 header = (mem_debug_header_t *)ptr;
285 header->magic1 = MEM_DEBUG_MAGIC1;
286 header->magic2 = MEM_DEBUG_MAGIC2;
287 header->size = size;
288 header->line_num = line;
290 ofs = strlen(file) - MEM_DEBUG_FILE_LEN;
291 strncpy(header->file_name, file + (ofs > 0 ? ofs : 0), MEM_DEBUG_FILE_LEN);
292 header->file_name[MEM_DEBUG_FILE_LEN] = 0;
294 header->next = mem_debug_chain;
295 header->prev = NULL;
297 if (header->next)
298 header->next->prev = header;
300 mem_debug_chain = header;
302 ptr = (char *)ptr + sizeof(mem_debug_header_t);
303 return ptr;
306 PUB_FUNC void tcc_free_debug(void *ptr)
308 mem_debug_header_t *header;
310 if (!ptr)
311 return;
313 ptr = (char *)ptr - sizeof(mem_debug_header_t);
314 header = (mem_debug_header_t *)ptr;
315 if (header->magic1 != MEM_DEBUG_MAGIC1 ||
316 header->magic2 != MEM_DEBUG_MAGIC2 ||
317 header->size == (size_t)-1 )
319 tcc_error("tcc_free check failed");
322 mem_cur_size -= header->size;
323 header->size = (size_t)-1;
325 if (header->next)
326 header->next->prev = header->prev;
328 if (header->prev)
329 header->prev->next = header->next;
331 if (header == mem_debug_chain)
332 mem_debug_chain = header->next;
334 free(ptr);
338 PUB_FUNC void *tcc_mallocz_debug(unsigned long size, const char *file, int line)
340 void *ptr;
341 ptr = tcc_malloc_debug(size,file,line);
342 memset(ptr, 0, size);
343 return ptr;
346 PUB_FUNC void *tcc_realloc_debug(void *ptr, unsigned long size, const char *file, int line)
348 mem_debug_header_t *header;
349 int mem_debug_chain_update = 0;
351 if (!ptr) {
352 ptr = tcc_malloc_debug(size, file, line);
353 return ptr;
356 ptr = (char *)ptr - sizeof(mem_debug_header_t);
357 header = (mem_debug_header_t *)ptr;
358 if (header->magic1 != MEM_DEBUG_MAGIC1 ||
359 header->magic2 != MEM_DEBUG_MAGIC2 ||
360 header->size == (size_t)-1 )
362 check_error:
363 tcc_error("tcc_realloc check failed");
366 mem_debug_chain_update = (header == mem_debug_chain);
368 mem_cur_size -= header->size;
369 ptr = realloc(ptr, sizeof(mem_debug_header_t) + size);
370 if (!ptr)
371 tcc_error("memory full (realloc)");
373 header = (mem_debug_header_t *)ptr;
374 if (header->magic1 != MEM_DEBUG_MAGIC1 ||
375 header->magic2 != MEM_DEBUG_MAGIC2)
377 goto check_error;
380 mem_cur_size += size;
381 if (mem_cur_size > mem_max_size)
382 mem_max_size = mem_cur_size;
384 header->size = size;
385 if (header->next)
386 header->next->prev = header;
388 if (header->prev)
389 header->prev->next = header;
391 if (mem_debug_chain_update)
392 mem_debug_chain = header;
394 ptr = (char *)ptr + sizeof(mem_debug_header_t);
395 return ptr;
398 PUB_FUNC char *tcc_strdup_debug(const char *str, const char *file, int line)
400 char *ptr;
401 ptr = tcc_malloc_debug(strlen(str) + 1, file, line);
402 strcpy(ptr, str);
403 return ptr;
406 PUB_FUNC void tcc_memstats(int bench)
408 if (mem_cur_size) {
409 mem_debug_header_t *header = mem_debug_chain;
411 fprintf(stderr, "MEM_DEBUG: mem_leak= %d bytes, mem_max_size= %d bytes\n",
412 mem_cur_size, mem_max_size);
414 while (header) {
415 fprintf(stderr, " file %s, line %u: %u bytes\n",
416 header->file_name, header->line_num, header->size);
417 header = header->next;
420 else if (bench)
421 fprintf(stderr, "mem_max_size= %d bytes\n", mem_max_size);
424 #undef MEM_DEBUG_MAGIC1
425 #undef MEM_DEBUG_MAGIC2
426 #undef MEM_DEBUG_FILE_LEN
428 #endif
430 #define free(p) use_tcc_free(p)
431 #define malloc(s) use_tcc_malloc(s)
432 #define realloc(p, s) use_tcc_realloc(p, s)
434 /********************************************************/
435 /* dynarrays */
437 ST_FUNC void dynarray_add(void ***ptab, int *nb_ptr, void *data)
439 int nb, nb_alloc;
440 void **pp;
442 nb = *nb_ptr;
443 pp = *ptab;
444 /* every power of two we double array size */
445 if ((nb & (nb - 1)) == 0) {
446 if (!nb)
447 nb_alloc = 1;
448 else
449 nb_alloc = nb * 2;
450 pp = tcc_realloc(pp, nb_alloc * sizeof(void *));
451 *ptab = pp;
453 pp[nb++] = data;
454 *nb_ptr = nb;
457 ST_FUNC void dynarray_reset(void *pp, int *n)
459 void **p;
460 for (p = *(void***)pp; *n; ++p, --*n)
461 if (*p)
462 tcc_free(*p);
463 tcc_free(*(void**)pp);
464 *(void**)pp = NULL;
467 static void tcc_split_path(TCCState *s, void ***p_ary, int *p_nb_ary, const char *in)
469 const char *p;
470 do {
471 int c;
472 CString str;
474 cstr_new(&str);
475 for (p = in; c = *p, c != '\0' && c != PATHSEP; ++p) {
476 if (c == '{' && p[1] && p[2] == '}') {
477 c = p[1], p += 2;
478 if (c == 'B')
479 cstr_cat(&str, s->tcc_lib_path, -1);
480 } else {
481 cstr_ccat(&str, c);
484 cstr_ccat(&str, '\0');
485 dynarray_add(p_ary, p_nb_ary, tcc_strdup(str.data));
486 cstr_free(&str);
487 in = p+1;
488 } while (*p);
491 /********************************************************/
493 ST_FUNC Section *new_section(TCCState *s1, const char *name, int sh_type, int sh_flags)
495 Section *sec;
497 sec = tcc_mallocz(sizeof(Section) + strlen(name));
498 strcpy(sec->name, name);
499 sec->sh_type = sh_type;
500 sec->sh_flags = sh_flags;
501 switch(sh_type) {
502 case SHT_HASH:
503 case SHT_REL:
504 case SHT_RELA:
505 case SHT_DYNSYM:
506 case SHT_SYMTAB:
507 case SHT_DYNAMIC:
508 sec->sh_addralign = 4;
509 break;
510 case SHT_STRTAB:
511 sec->sh_addralign = 1;
512 break;
513 default:
514 sec->sh_addralign = PTR_SIZE; /* gcc/pcc default aligment */
515 break;
518 if (sh_flags & SHF_PRIVATE) {
519 dynarray_add((void ***)&s1->priv_sections, &s1->nb_priv_sections, sec);
520 } else {
521 sec->sh_num = s1->nb_sections;
522 dynarray_add((void ***)&s1->sections, &s1->nb_sections, sec);
525 return sec;
528 static void free_section(Section *s)
530 tcc_free(s->data);
533 /* realloc section and set its content to zero */
534 ST_FUNC void section_realloc(Section *sec, unsigned long new_size)
536 unsigned long size;
537 unsigned char *data;
539 size = sec->data_allocated;
540 if (size == 0)
541 size = 1;
542 while (size < new_size)
543 size = size * 2;
544 data = tcc_realloc(sec->data, size);
545 memset(data + sec->data_allocated, 0, size - sec->data_allocated);
546 sec->data = data;
547 sec->data_allocated = size;
550 /* reserve at least 'size' bytes in section 'sec' from
551 sec->data_offset. */
552 ST_FUNC void *section_ptr_add(Section *sec, addr_t size)
554 size_t offset, offset1;
556 offset = sec->data_offset;
557 offset1 = offset + size;
558 if (offset1 > sec->data_allocated)
559 section_realloc(sec, offset1);
560 sec->data_offset = offset1;
561 return sec->data + offset;
564 /* reserve at least 'size' bytes from section start */
565 ST_FUNC void section_reserve(Section *sec, unsigned long size)
567 if (size > sec->data_allocated)
568 section_realloc(sec, size);
569 if (size > sec->data_offset)
570 sec->data_offset = size;
573 /* return a reference to a section, and create it if it does not
574 exists */
575 ST_FUNC Section *find_section(TCCState *s1, const char *name)
577 Section *sec;
578 int i;
579 for(i = 1; i < s1->nb_sections; i++) {
580 sec = s1->sections[i];
581 if (!strcmp(name, sec->name))
582 return sec;
584 /* sections are created as PROGBITS */
585 return new_section(s1, name, SHT_PROGBITS, SHF_ALLOC);
588 /* update sym->c so that it points to an external symbol in section
589 'section' with value 'value' */
590 ST_FUNC void put_extern_sym2(Sym *sym, Section *section,
591 addr_t value, unsigned long size,
592 int can_add_underscore)
594 int sym_type, sym_bind, sh_num, info, other;
595 ElfW(Sym) *esym;
596 const char *name;
597 char buf1[256];
599 #ifdef CONFIG_TCC_BCHECK
600 char buf[32];
601 #endif
603 if (section == NULL)
604 sh_num = SHN_UNDEF;
605 else if (section == SECTION_ABS)
606 sh_num = SHN_ABS;
607 else
608 sh_num = section->sh_num;
610 if ((sym->type.t & VT_BTYPE) == VT_FUNC) {
611 sym_type = STT_FUNC;
612 } else if ((sym->type.t & VT_BTYPE) == VT_VOID) {
613 sym_type = STT_NOTYPE;
614 } else {
615 sym_type = STT_OBJECT;
618 if (sym->type.t & VT_STATIC)
619 sym_bind = STB_LOCAL;
620 else {
621 if (sym->type.t & VT_WEAK)
622 sym_bind = STB_WEAK;
623 else
624 sym_bind = STB_GLOBAL;
627 if (!sym->c) {
628 name = get_tok_str(sym->v, NULL);
629 #ifdef CONFIG_TCC_BCHECK
630 if (tcc_state->do_bounds_check) {
631 /* XXX: avoid doing that for statics ? */
632 /* if bound checking is activated, we change some function
633 names by adding the "__bound" prefix */
634 switch(sym->v) {
635 #ifdef TCC_TARGET_PE
636 /* XXX: we rely only on malloc hooks */
637 case TOK_malloc:
638 case TOK_free:
639 case TOK_realloc:
640 case TOK_memalign:
641 case TOK_calloc:
642 #endif
643 case TOK_memcpy:
644 case TOK_memmove:
645 case TOK_memset:
646 case TOK_strlen:
647 case TOK_strcpy:
648 case TOK_alloca:
649 strcpy(buf, "__bound_");
650 strcat(buf, name);
651 name = buf;
652 break;
655 #endif
656 other = 0;
658 #ifdef TCC_TARGET_PE
659 if (sym->type.t & VT_EXPORT)
660 other |= ST_PE_EXPORT;
661 if (sym_type == STT_FUNC && sym->type.ref) {
662 Sym *ref = sym->type.ref;
663 if (ref->a.func_export)
664 other |= ST_PE_EXPORT;
665 if (ref->a.func_call == FUNC_STDCALL && can_add_underscore) {
666 sprintf(buf1, "_%s@%d", name, ref->a.func_args * PTR_SIZE);
667 name = buf1;
668 other |= ST_PE_STDCALL;
669 can_add_underscore = 0;
671 } else {
672 if (find_elf_sym(tcc_state->dynsymtab_section, name))
673 other |= ST_PE_IMPORT;
674 if (sym->type.t & VT_IMPORT)
675 other |= ST_PE_IMPORT;
677 #else
678 if (! (sym->type.t & VT_STATIC))
679 other = (sym->type.t & VT_VIS_MASK) >> VT_VIS_SHIFT;
680 #endif
681 if (tcc_state->leading_underscore && can_add_underscore) {
682 buf1[0] = '_';
683 pstrcpy(buf1 + 1, sizeof(buf1) - 1, name);
684 name = buf1;
686 if (sym->asm_label) {
687 name = get_tok_str(sym->asm_label, NULL);
689 info = ELFW(ST_INFO)(sym_bind, sym_type);
690 sym->c = add_elf_sym(symtab_section, value, size, info, other, sh_num, name);
691 } else {
692 esym = &((ElfW(Sym) *)symtab_section->data)[sym->c];
693 esym->st_value = value;
694 esym->st_size = size;
695 esym->st_shndx = sh_num;
699 ST_FUNC void put_extern_sym(Sym *sym, Section *section,
700 addr_t value, unsigned long size)
702 put_extern_sym2(sym, section, value, size, 1);
705 /* add a new relocation entry to symbol 'sym' in section 's' */
706 ST_FUNC void greloca(Section *s, Sym *sym, unsigned long offset, int type,
707 addr_t addend)
709 int c = 0;
710 if (sym) {
711 if (0 == sym->c)
712 put_extern_sym(sym, NULL, 0, 0);
713 c = sym->c;
715 /* now we can add ELF relocation info */
716 put_elf_reloca(symtab_section, s, offset, type, c, addend);
719 ST_FUNC void greloc(Section *s, Sym *sym, unsigned long offset, int type)
721 greloca(s, sym, offset, type, 0);
724 /********************************************************/
726 static void strcat_vprintf(char *buf, int buf_size, const char *fmt, va_list ap)
728 int len;
729 len = strlen(buf);
730 vsnprintf(buf + len, buf_size - len, fmt, ap);
733 static void strcat_printf(char *buf, int buf_size, const char *fmt, ...)
735 va_list ap;
736 va_start(ap, fmt);
737 strcat_vprintf(buf, buf_size, fmt, ap);
738 va_end(ap);
741 static void error1(TCCState *s1, int is_warning, const char *fmt, va_list ap)
743 char buf[2048];
744 BufferedFile **pf, *f;
746 buf[0] = '\0';
747 /* use upper file if inline ":asm:" or token ":paste:" */
748 for (f = file; f && f->filename[0] == ':'; f = f->prev)
750 if (f) {
751 for(pf = s1->include_stack; pf < s1->include_stack_ptr; pf++)
752 strcat_printf(buf, sizeof(buf), "In file included from %s:%d:\n",
753 (*pf)->filename, (*pf)->line_num);
754 if (f->line_num > 0) {
755 strcat_printf(buf, sizeof(buf), "%s:%d: ",
756 f->filename, f->line_num - !!(tok_flags & TOK_FLAG_BOL));
757 } else {
758 strcat_printf(buf, sizeof(buf), "%s: ",
759 f->filename);
761 } else {
762 strcat_printf(buf, sizeof(buf), "tcc: ");
764 if (is_warning)
765 strcat_printf(buf, sizeof(buf), "warning: ");
766 else
767 strcat_printf(buf, sizeof(buf), "error: ");
768 strcat_vprintf(buf, sizeof(buf), fmt, ap);
770 if (!s1->error_func) {
771 /* default case: stderr */
772 if (s1->ppfp) /* print a newline during tcc -E */
773 fprintf(s1->ppfp, "\n"), fflush(s1->ppfp);
774 fprintf(stderr, "%s\n", buf);
775 fflush(stderr); /* print error/warning now (win32) */
776 } else {
777 s1->error_func(s1->error_opaque, buf);
779 if (!is_warning || s1->warn_error)
780 s1->nb_errors++;
783 LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque,
784 void (*error_func)(void *opaque, const char *msg))
786 s->error_opaque = error_opaque;
787 s->error_func = error_func;
790 /* error without aborting current compilation */
791 PUB_FUNC void tcc_error_noabort(const char *fmt, ...)
793 TCCState *s1 = tcc_state;
794 va_list ap;
796 va_start(ap, fmt);
797 error1(s1, 0, fmt, ap);
798 va_end(ap);
801 PUB_FUNC void tcc_error(const char *fmt, ...)
803 TCCState *s1 = tcc_state;
804 va_list ap;
806 va_start(ap, fmt);
807 error1(s1, 0, fmt, ap);
808 va_end(ap);
809 /* better than nothing: in some cases, we accept to handle errors */
810 if (s1->error_set_jmp_enabled) {
811 longjmp(s1->error_jmp_buf, 1);
812 } else {
813 /* XXX: eliminate this someday */
814 exit(1);
818 PUB_FUNC void tcc_warning(const char *fmt, ...)
820 TCCState *s1 = tcc_state;
821 va_list ap;
823 if (s1->warn_none)
824 return;
826 va_start(ap, fmt);
827 error1(s1, 1, fmt, ap);
828 va_end(ap);
831 /********************************************************/
832 /* I/O layer */
834 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen)
836 BufferedFile *bf;
837 int buflen = initlen ? initlen : IO_BUF_SIZE;
839 bf = tcc_mallocz(sizeof(BufferedFile) + buflen);
840 bf->buf_ptr = bf->buffer;
841 bf->buf_end = bf->buffer + initlen;
842 bf->buf_end[0] = CH_EOB; /* put eob symbol */
843 pstrcpy(bf->filename, sizeof(bf->filename), filename);
844 #ifdef _WIN32
845 normalize_slashes(bf->filename);
846 #endif
847 bf->line_num = 1;
848 bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
849 bf->fd = -1;
850 bf->prev = file;
851 file = bf;
854 ST_FUNC void tcc_close(void)
856 BufferedFile *bf = file;
857 if (bf->fd > 0) {
858 close(bf->fd);
859 total_lines += bf->line_num;
861 file = bf->prev;
862 tcc_free(bf);
865 ST_FUNC int tcc_open(TCCState *s1, const char *filename)
867 int fd;
868 if (strcmp(filename, "-") == 0)
869 fd = 0, filename = "<stdin>";
870 else
871 fd = open(filename, O_RDONLY | O_BINARY);
872 if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3)
873 printf("%s %*s%s\n", fd < 0 ? "nf":"->",
874 (int)(s1->include_stack_ptr - s1->include_stack), "", filename);
875 if (fd < 0)
876 return -1;
878 tcc_open_bf(s1, filename, 0);
879 file->fd = fd;
880 return fd;
883 /* compile the C file opened in 'file'. Return non zero if errors. */
884 static int tcc_compile(TCCState *s1)
886 Sym *define_start;
887 char buf[512];
888 volatile int section_sym;
890 #ifdef INC_DEBUG
891 printf("%s: **** new file\n", file->filename);
892 #endif
893 preprocess_init(s1);
895 cur_text_section = NULL;
896 funcname = "";
897 anon_sym = SYM_FIRST_ANOM;
899 /* file info: full path + filename */
900 section_sym = 0; /* avoid warning */
901 if (s1->do_debug) {
902 section_sym = put_elf_sym(symtab_section, 0, 0,
903 ELFW(ST_INFO)(STB_LOCAL, STT_SECTION), 0,
904 text_section->sh_num, NULL);
905 getcwd(buf, sizeof(buf));
906 #ifdef _WIN32
907 normalize_slashes(buf);
908 #endif
909 pstrcat(buf, sizeof(buf), "/");
910 put_stabs_r(buf, N_SO, 0, 0,
911 text_section->data_offset, text_section, section_sym);
912 put_stabs_r(file->filename, N_SO, 0, 0,
913 text_section->data_offset, text_section, section_sym);
915 /* an elf symbol of type STT_FILE must be put so that STB_LOCAL
916 symbols can be safely used */
917 put_elf_sym(symtab_section, 0, 0,
918 ELFW(ST_INFO)(STB_LOCAL, STT_FILE), 0,
919 SHN_ABS, file->filename);
921 /* define some often used types */
922 int_type.t = VT_INT;
924 char_pointer_type.t = VT_BYTE;
925 mk_pointer(&char_pointer_type);
927 #if PTR_SIZE == 4
928 size_type.t = VT_INT;
929 #else
930 size_type.t = VT_LLONG;
931 #endif
933 func_old_type.t = VT_FUNC;
934 func_old_type.ref = sym_push(SYM_FIELD, &int_type, FUNC_CDECL, FUNC_OLD);
935 #ifdef TCC_TARGET_ARM
936 arm_init(s1);
937 #endif
939 #if 0
940 /* define 'void *alloca(unsigned int)' builtin function */
942 Sym *s1;
944 p = anon_sym++;
945 sym = sym_push(p, mk_pointer(VT_VOID), FUNC_CDECL, FUNC_NEW);
946 s1 = sym_push(SYM_FIELD, VT_UNSIGNED | VT_INT, 0, 0);
947 s1->next = NULL;
948 sym->next = s1;
949 sym_push(TOK_alloca, VT_FUNC | (p << VT_STRUCT_SHIFT), VT_CONST, 0);
951 #endif
953 define_start = define_stack;
954 nocode_wanted = 1;
956 if (setjmp(s1->error_jmp_buf) == 0) {
957 s1->nb_errors = 0;
958 s1->error_set_jmp_enabled = 1;
960 ch = file->buf_ptr[0];
961 tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
962 parse_flags = PARSE_FLAG_PREPROCESS | PARSE_FLAG_TOK_NUM | PARSE_FLAG_TOK_STR;
963 next();
964 decl(VT_CONST);
965 if (tok != TOK_EOF)
966 expect("declaration");
967 check_vstack();
969 /* end of translation unit info */
970 if (s1->do_debug) {
971 put_stabs_r(NULL, N_SO, 0, 0,
972 text_section->data_offset, text_section, section_sym);
976 s1->error_set_jmp_enabled = 0;
978 /* reset define stack, but leave -Dsymbols (may be incorrect if
979 they are undefined) */
980 free_defines(define_start);
982 gen_inline_functions();
984 sym_pop(&global_stack, NULL);
985 sym_pop(&local_stack, NULL);
987 return s1->nb_errors != 0 ? -1 : 0;
990 LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
992 int len, ret;
994 len = strlen(str);
995 tcc_open_bf(s, "<string>", len);
996 memcpy(file->buffer, str, len);
997 ret = tcc_compile(s);
998 tcc_close();
999 return ret;
1002 /* define a preprocessor symbol. A value can also be provided with the '=' operator */
1003 LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value)
1005 int len1, len2;
1006 /* default value */
1007 if (!value)
1008 value = "1";
1009 len1 = strlen(sym);
1010 len2 = strlen(value);
1012 /* init file structure */
1013 tcc_open_bf(s1, "<define>", len1 + len2 + 1);
1014 memcpy(file->buffer, sym, len1);
1015 file->buffer[len1] = ' ';
1016 memcpy(file->buffer + len1 + 1, value, len2);
1018 /* parse with define parser */
1019 ch = file->buf_ptr[0];
1020 next_nomacro();
1021 parse_define();
1023 tcc_close();
1026 /* undefine a preprocessor symbol */
1027 LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
1029 TokenSym *ts;
1030 Sym *s;
1031 ts = tok_alloc(sym, strlen(sym));
1032 s = define_find(ts->tok);
1033 /* undefine symbol by putting an invalid name */
1034 if (s)
1035 define_undef(s);
1038 /* cleanup all static data used during compilation */
1039 static void tcc_cleanup(void)
1041 if (NULL == tcc_state)
1042 return;
1043 tcc_state = NULL;
1045 preprocess_delete();
1047 /* free sym_pools */
1048 dynarray_reset(&sym_pools, &nb_sym_pools);
1049 /* reset symbol stack */
1050 sym_free_first = NULL;
1053 LIBTCCAPI TCCState *tcc_new(void)
1055 TCCState *s;
1056 char buffer[100];
1057 int a,b,c;
1059 tcc_cleanup();
1061 s = tcc_mallocz(sizeof(TCCState));
1062 if (!s)
1063 return NULL;
1064 tcc_state = s;
1065 #ifdef _WIN32
1066 tcc_set_lib_path_w32(s);
1067 #else
1068 tcc_set_lib_path(s, CONFIG_TCCDIR);
1069 #endif
1070 s->output_type = 0;
1071 preprocess_new();
1072 s->include_stack_ptr = s->include_stack;
1074 /* we add dummy defines for some special macros to speed up tests
1075 and to have working defined() */
1076 define_push(TOK___LINE__, MACRO_OBJ, NULL, NULL);
1077 define_push(TOK___FILE__, MACRO_OBJ, NULL, NULL);
1078 define_push(TOK___DATE__, MACRO_OBJ, NULL, NULL);
1079 define_push(TOK___TIME__, MACRO_OBJ, NULL, NULL);
1081 /* define __TINYC__ 92X */
1082 sscanf(TCC_VERSION, "%d.%d.%d", &a, &b, &c);
1083 sprintf(buffer, "%d", a*10000 + b*100 + c);
1084 tcc_define_symbol(s, "__TINYC__", buffer);
1086 /* standard defines */
1087 tcc_define_symbol(s, "__STDC__", NULL);
1088 tcc_define_symbol(s, "__STDC_VERSION__", "199901L");
1089 tcc_define_symbol(s, "__STDC_HOSTED__", NULL);
1091 /* target defines */
1092 #if defined(TCC_TARGET_I386)
1093 tcc_define_symbol(s, "__i386__", NULL);
1094 tcc_define_symbol(s, "__i386", NULL);
1095 tcc_define_symbol(s, "i386", NULL);
1096 #elif defined(TCC_TARGET_X86_64)
1097 tcc_define_symbol(s, "__x86_64__", NULL);
1098 #elif defined(TCC_TARGET_ARM)
1099 tcc_define_symbol(s, "__ARM_ARCH_4__", NULL);
1100 tcc_define_symbol(s, "__arm_elf__", NULL);
1101 tcc_define_symbol(s, "__arm_elf", NULL);
1102 tcc_define_symbol(s, "arm_elf", NULL);
1103 tcc_define_symbol(s, "__arm__", NULL);
1104 tcc_define_symbol(s, "__arm", NULL);
1105 tcc_define_symbol(s, "arm", NULL);
1106 tcc_define_symbol(s, "__APCS_32__", NULL);
1107 tcc_define_symbol(s, "__ARMEL__", NULL);
1108 #if defined(TCC_ARM_EABI)
1109 tcc_define_symbol(s, "__ARM_EABI__", NULL);
1110 #endif
1111 #if defined(TCC_ARM_HARDFLOAT)
1112 s->float_abi = ARM_HARD_FLOAT;
1113 tcc_define_symbol(s, "__ARM_PCS_VFP", NULL);
1114 #else
1115 s->float_abi = ARM_SOFTFP_FLOAT;
1116 #endif
1117 #elif defined(TCC_TARGET_ARM64)
1118 tcc_define_symbol(s, "__aarch64__", NULL);
1119 #endif
1121 #ifdef TCC_TARGET_PE
1122 tcc_define_symbol(s, "_WIN32", NULL);
1123 # ifdef TCC_TARGET_X86_64
1124 tcc_define_symbol(s, "_WIN64", NULL);
1125 /* Those are defined by Visual Studio */
1126 tcc_define_symbol(s, "_M_X64", "100");
1127 tcc_define_symbol(s, "_M_AMD64", "100");
1128 # else
1129 /* Defined by Visual Studio. 300 == 80386. */
1130 tcc_define_symbol(s, "_M_IX86", "300");
1131 # endif
1132 #else
1133 tcc_define_symbol(s, "__unix__", NULL);
1134 tcc_define_symbol(s, "__unix", NULL);
1135 tcc_define_symbol(s, "unix", NULL);
1136 # if defined(__linux__)
1137 tcc_define_symbol(s, "__linux__", NULL);
1138 tcc_define_symbol(s, "__linux", NULL);
1139 # endif
1140 # if defined(__FreeBSD__)
1141 tcc_define_symbol(s, "__FreeBSD__", "__FreeBSD__");
1142 # endif
1143 # if defined(__FreeBSD_kernel__)
1144 tcc_define_symbol(s, "__FreeBSD_kernel__", NULL);
1145 # endif
1146 #endif
1147 # if defined(__NetBSD__)
1148 tcc_define_symbol(s, "__NetBSD__", "__NetBSD__");
1149 # endif
1151 /* TinyCC & gcc defines */
1152 #if defined(TCC_TARGET_PE) && defined(TCC_TARGET_X86_64)
1153 /* 64bit Windows. */
1154 tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long");
1155 tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long");
1156 tcc_define_symbol(s, "__LLP64__", NULL);
1157 #elif defined(TCC_TARGET_X86_64) || defined(TCC_TARGET_ARM64)
1158 /* Other 64bit systems. */
1159 tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
1160 tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
1161 tcc_define_symbol(s, "__LP64__", NULL);
1162 #else
1163 /* Other 32bit systems. */
1164 tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
1165 tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
1166 tcc_define_symbol(s, "__ILP32__", NULL);
1167 #endif
1169 #ifdef TCC_TARGET_PE
1170 tcc_define_symbol(s, "__WCHAR_TYPE__", "unsigned short");
1171 tcc_define_symbol(s, "__WINT_TYPE__", "unsigned short");
1172 #else
1173 tcc_define_symbol(s, "__WCHAR_TYPE__", "int");
1174 /* wint_t is unsigned int by default, but (signed) int on BSDs
1175 and unsigned short on windows. Other OSes might have still
1176 other conventions, sigh. */
1177 #if defined(__FreeBSD__) || defined (__FreeBSD_kernel__) || defined(__NetBSD__)
1178 tcc_define_symbol(s, "__WINT_TYPE__", "int");
1179 #else
1180 tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int");
1181 #endif
1182 #endif
1184 #ifndef TCC_TARGET_PE
1185 /* glibc defines */
1186 tcc_define_symbol(s, "__REDIRECT(name, proto, alias)", "name proto __asm__ (#alias)");
1187 tcc_define_symbol(s, "__REDIRECT_NTH(name, proto, alias)", "name proto __asm__ (#alias) __THROW");
1188 /* paths for crt objects */
1189 tcc_split_path(s, (void ***)&s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX);
1190 #endif
1192 /* no section zero */
1193 dynarray_add((void ***)&s->sections, &s->nb_sections, NULL);
1195 /* create standard sections */
1196 text_section = new_section(s, ".text", SHT_PROGBITS, SHF_ALLOC | SHF_EXECINSTR);
1197 data_section = new_section(s, ".data", SHT_PROGBITS, SHF_ALLOC | SHF_WRITE);
1198 bss_section = new_section(s, ".bss", SHT_NOBITS, SHF_ALLOC | SHF_WRITE);
1200 /* symbols are always generated for linking stage */
1201 symtab_section = new_symtab(s, ".symtab", SHT_SYMTAB, 0,
1202 ".strtab",
1203 ".hashtab", SHF_PRIVATE);
1204 strtab_section = symtab_section->link;
1205 s->symtab = symtab_section;
1207 /* private symbol table for dynamic symbols */
1208 s->dynsymtab_section = new_symtab(s, ".dynsymtab", SHT_SYMTAB, SHF_PRIVATE,
1209 ".dynstrtab",
1210 ".dynhashtab", SHF_PRIVATE);
1211 s->alacarte_link = 1;
1212 s->nocommon = 1;
1213 s->warn_implicit_function_declaration = 1;
1215 #ifdef CHAR_IS_UNSIGNED
1216 s->char_is_unsigned = 1;
1217 #endif
1218 /* enable this if you want symbols with leading underscore on windows: */
1219 #if 0 /* def TCC_TARGET_PE */
1220 s->leading_underscore = 1;
1221 #endif
1222 #ifdef TCC_TARGET_I386
1223 s->seg_size = 32;
1224 #endif
1225 #ifdef TCC_IS_NATIVE
1226 s->runtime_main = "main";
1227 #endif
1228 return s;
1231 LIBTCCAPI void tcc_delete(TCCState *s1)
1233 int i;
1234 int bench = s1->do_bench;
1236 tcc_cleanup();
1238 /* close a preprocessor output */
1239 if (s1->ppfp && s1->ppfp != stdout)
1240 fclose(s1->ppfp);
1242 /* free all sections */
1243 for(i = 1; i < s1->nb_sections; i++)
1244 free_section(s1->sections[i]);
1245 dynarray_reset(&s1->sections, &s1->nb_sections);
1247 for(i = 0; i < s1->nb_priv_sections; i++)
1248 free_section(s1->priv_sections[i]);
1249 dynarray_reset(&s1->priv_sections, &s1->nb_priv_sections);
1251 /* free any loaded DLLs */
1252 #ifdef TCC_IS_NATIVE
1253 for ( i = 0; i < s1->nb_loaded_dlls; i++) {
1254 DLLReference *ref = s1->loaded_dlls[i];
1255 if ( ref->handle )
1256 dlclose(ref->handle);
1258 #endif
1260 /* free loaded dlls array */
1261 dynarray_reset(&s1->loaded_dlls, &s1->nb_loaded_dlls);
1263 /* free library paths */
1264 dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
1265 dynarray_reset(&s1->crt_paths, &s1->nb_crt_paths);
1267 /* free include paths */
1268 dynarray_reset(&s1->cached_includes, &s1->nb_cached_includes);
1269 dynarray_reset(&s1->include_paths, &s1->nb_include_paths);
1270 dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths);
1272 tcc_free(s1->tcc_lib_path);
1273 tcc_free(s1->soname);
1274 tcc_free(s1->rpath);
1275 tcc_free(s1->init_symbol);
1276 tcc_free(s1->fini_symbol);
1277 tcc_free(s1->outfile);
1278 tcc_free(s1->deps_outfile);
1279 dynarray_reset(&s1->files, &s1->nb_files);
1280 dynarray_reset(&s1->target_deps, &s1->nb_target_deps);
1281 dynarray_reset(&s1->pragma_libs, &s1->nb_pragma_libs);
1283 #ifdef TCC_IS_NATIVE
1284 # ifdef HAVE_SELINUX
1285 munmap (s1->write_mem, s1->mem_size);
1286 munmap (s1->runtime_mem, s1->mem_size);
1287 # else
1288 tcc_free(s1->runtime_mem);
1289 # endif
1290 #endif
1292 tcc_free(s1->sym_attrs);
1293 tcc_free(s1);
1294 tcc_memstats(bench);
1297 LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
1299 tcc_split_path(s, (void ***)&s->include_paths, &s->nb_include_paths, pathname);
1300 return 0;
1303 LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
1305 tcc_split_path(s, (void ***)&s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
1306 return 0;
1309 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags, int filetype)
1311 ElfW(Ehdr) ehdr;
1312 int fd, ret, size;
1314 parse_flags = 0;
1315 #ifdef CONFIG_TCC_ASM
1316 /* if .S file, define __ASSEMBLER__ like gcc does */
1317 if ((filetype == TCC_FILETYPE_ASM) || (filetype == TCC_FILETYPE_ASM_PP)) {
1318 tcc_define_symbol(s1, "__ASSEMBLER__", NULL);
1319 parse_flags = PARSE_FLAG_ASM_FILE;
1321 #endif
1323 /* open the file */
1324 ret = tcc_open(s1, filename);
1325 if (ret < 0) {
1326 if (flags & AFF_PRINT_ERROR)
1327 tcc_error_noabort("file '%s' not found", filename);
1328 return ret;
1331 /* update target deps */
1332 dynarray_add((void ***)&s1->target_deps, &s1->nb_target_deps,
1333 tcc_strdup(filename));
1335 if (flags & AFF_PREPROCESS) {
1336 ret = tcc_preprocess(s1);
1337 goto the_end;
1340 if (filetype == TCC_FILETYPE_C) {
1341 /* C file assumed */
1342 ret = tcc_compile(s1);
1343 goto the_end;
1346 #ifdef CONFIG_TCC_ASM
1347 if (filetype == TCC_FILETYPE_ASM_PP) {
1348 /* non preprocessed assembler */
1349 ret = tcc_assemble(s1, 1);
1350 goto the_end;
1353 if (filetype == TCC_FILETYPE_ASM) {
1354 /* preprocessed assembler */
1355 ret = tcc_assemble(s1, 0);
1356 goto the_end;
1358 #endif
1360 fd = file->fd;
1361 /* assume executable format: auto guess file type */
1362 size = read(fd, &ehdr, sizeof(ehdr));
1363 lseek(fd, 0, SEEK_SET);
1364 if (size <= 0) {
1365 tcc_error_noabort("could not read header");
1366 goto the_end;
1369 if (size == sizeof(ehdr) &&
1370 ehdr.e_ident[0] == ELFMAG0 &&
1371 ehdr.e_ident[1] == ELFMAG1 &&
1372 ehdr.e_ident[2] == ELFMAG2 &&
1373 ehdr.e_ident[3] == ELFMAG3) {
1375 /* do not display line number if error */
1376 file->line_num = 0;
1377 if (ehdr.e_type == ET_REL) {
1378 ret = tcc_load_object_file(s1, fd, 0);
1379 goto the_end;
1382 #ifndef TCC_TARGET_PE
1383 if (ehdr.e_type == ET_DYN) {
1384 if (s1->output_type == TCC_OUTPUT_MEMORY) {
1385 #ifdef TCC_IS_NATIVE
1386 void *h;
1387 h = dlopen(filename, RTLD_GLOBAL | RTLD_LAZY);
1388 if (h)
1389 #endif
1390 ret = 0;
1391 } else {
1392 ret = tcc_load_dll(s1, fd, filename,
1393 (flags & AFF_REFERENCED_DLL) != 0);
1395 goto the_end;
1397 #endif
1398 tcc_error_noabort("unrecognized ELF file");
1399 goto the_end;
1402 if (memcmp((char *)&ehdr, ARMAG, 8) == 0) {
1403 file->line_num = 0; /* do not display line number if error */
1404 ret = tcc_load_archive(s1, fd);
1405 goto the_end;
1408 #ifdef TCC_TARGET_COFF
1409 if (*(uint16_t *)(&ehdr) == COFF_C67_MAGIC) {
1410 ret = tcc_load_coff(s1, fd);
1411 goto the_end;
1413 #endif
1415 #ifdef TCC_TARGET_PE
1416 ret = pe_load_file(s1, filename, fd);
1417 #else
1418 /* as GNU ld, consider it is an ld script if not recognized */
1419 ret = tcc_load_ldscript(s1);
1420 #endif
1421 if (ret < 0)
1422 tcc_error_noabort("%s: unrecognized file type (error=%d)", filename, ret);
1424 the_end:
1425 if (s1->verbose)
1426 printf("+> %s\n", filename);
1427 tcc_close();
1428 return ret;
1431 LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename, int filetype)
1433 if (s->output_type == TCC_OUTPUT_PREPROCESS)
1434 return tcc_add_file_internal(s, filename, AFF_PRINT_ERROR | AFF_PREPROCESS, filetype);
1435 else
1436 return tcc_add_file_internal(s, filename, AFF_PRINT_ERROR, filetype);
1439 LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
1441 tcc_split_path(s, (void ***)&s->library_paths, &s->nb_library_paths, pathname);
1442 return 0;
1445 static int tcc_add_library_internal(TCCState *s, const char *fmt,
1446 const char *filename, int flags, char **paths, int nb_paths)
1448 char buf[1024];
1449 int i;
1451 for(i = 0; i < nb_paths; i++) {
1452 snprintf(buf, sizeof(buf), fmt, paths[i], filename);
1453 if (tcc_add_file_internal(s, buf, flags, TCC_FILETYPE_BINARY) == 0)
1454 return 0;
1456 return -1;
1459 #ifndef TCC_TARGET_PE
1460 /* find and load a dll. Return non zero if not found */
1461 /* XXX: add '-rpath' option support ? */
1462 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags)
1464 return tcc_add_library_internal(s, "%s/%s", filename, flags,
1465 s->library_paths, s->nb_library_paths);
1467 #endif
1469 ST_FUNC int tcc_add_crt(TCCState *s, const char *filename)
1471 if (-1 == tcc_add_library_internal(s, "%s/%s",
1472 filename, 0, s->crt_paths, s->nb_crt_paths))
1473 tcc_error_noabort("file '%s' not found", filename);
1474 return 0;
1477 /* the library name is the same as the argument of the '-l' option */
1478 LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
1480 #ifdef TCC_TARGET_PE
1481 const char *libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
1482 const char **pp = s->static_link ? libs + 4 : libs;
1483 #else
1484 const char *libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
1485 const char **pp = s->static_link ? libs + 1 : libs;
1486 #endif
1487 while (*pp) {
1488 if (0 == tcc_add_library_internal(s, *pp,
1489 libraryname, 0, s->library_paths, s->nb_library_paths))
1490 return 0;
1491 ++pp;
1493 return -1;
1496 PUB_FUNC int tcc_add_library_err(TCCState *s, const char *libname)
1498 int ret = tcc_add_library(s, libname);
1499 if (ret < 0)
1500 tcc_error_noabort("cannot find library 'lib%s'", libname);
1501 return ret;
1504 /* habdle #pragma comment(lib,) */
1505 ST_FUNC void tcc_add_pragma_libs(TCCState *s1)
1507 int i;
1508 for (i = 0; i < s1->nb_pragma_libs; i++)
1509 tcc_add_library_err(s1, s1->pragma_libs[i]);
1512 LIBTCCAPI int tcc_add_symbol(TCCState *s, const char *name, const void *val)
1514 #ifdef TCC_TARGET_PE
1515 /* On x86_64 'val' might not be reachable with a 32bit offset.
1516 So it is handled here as if it were in a DLL. */
1517 pe_putimport(s, 0, name, (uintptr_t)val);
1518 #else
1519 add_elf_sym(symtab_section, (uintptr_t)val, 0,
1520 ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
1521 SHN_ABS, name);
1522 #endif
1523 return 0;
1527 /* Windows stat* ( https://msdn.microsoft.com/en-us/library/14h5k7ff.aspx ):
1528 * - st_gid, st_ino, st_uid: only valid on "unix" file systems (not FAT, NTFS, etc)
1529 * - st_atime, st_ctime: not valid on FAT, valid on NTFS.
1530 * - Other fields should be reasonably compatible (and S_ISDIR should work).
1532 * BY_HANDLE_FILE_INFORMATION ( https://msdn.microsoft.com/en-us/library/windows/desktop/aa363788%28v=vs.85%29.aspx ):
1533 * - File index (combined nFileIndexHigh and nFileIndexLow) _may_ change when the file is opened.
1534 * - But on NTFS: it's guaranteed to be the same value until the file is deleted.
1535 * - On windows server 2012 there's a 128b file id, and the 64b one via
1536 * nFileIndex* is not guaranteed to be unique.
1538 * - MS Docs suggest to that volume number with the file index could be used to
1539 * check if two handles refer to the same file.
1541 #ifndef _WIN32
1542 typedef struct stat file_info_t;
1543 #else
1544 typedef BY_HANDLE_FILE_INFORMATION file_info_t;
1545 #endif
1547 static int get_file_info(const char *fname, file_info_t *out_info)
1549 #ifndef _WIN32
1550 return stat(fname, out_info);
1551 #else
1552 int rv = 1;
1553 HANDLE h = CreateFile(fname, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING,
1554 FILE_ATTRIBUTE_NORMAL|FILE_FLAG_BACKUP_SEMANTICS, NULL);
1556 if (h != INVALID_HANDLE_VALUE) {
1557 rv = !GetFileInformationByHandle(h, out_info);
1558 CloseHandle(h);
1560 return rv;
1561 #endif
1564 static int is_dir(file_info_t *info)
1566 #ifndef _WIN32
1567 return S_ISDIR(info->st_mode);
1568 #else
1569 return (info->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ==
1570 FILE_ATTRIBUTE_DIRECTORY;
1571 #endif
1574 static int is_same_file(const file_info_t *fi1, const file_info_t *fi2)
1576 #ifndef _WIN32
1577 return fi1->st_dev == fi2->st_dev &&
1578 fi1->st_ino == fi2->st_ino;
1579 #else
1580 return fi1->dwVolumeSerialNumber == fi2->dwVolumeSerialNumber &&
1581 fi1->nFileIndexHigh == fi2->nFileIndexHigh &&
1582 fi1->nFileIndexLow == fi2->nFileIndexLow;
1583 #endif
1586 static void
1587 tcc_normalize_inc_dirs_aux(file_info_t *stats, size_t *pnum, char **path)
1589 size_t i, num = *pnum;
1590 if (get_file_info(*path, &stats[num]) || !is_dir(&stats[num]))
1591 goto remove;
1592 for (i = 0; i < num; i++)
1593 if (is_same_file(&stats[i], &stats[num]))
1594 goto remove;
1595 *pnum = num + 1;
1596 return;
1597 remove:
1598 tcc_free(*path);
1599 *path = 0;
1602 /* Remove non-existent and duplicate directories from include paths. */
1603 ST_FUNC void tcc_normalize_inc_dirs(TCCState *s)
1605 file_info_t *stats =
1606 tcc_malloc(((size_t)s->nb_sysinclude_paths + s->nb_include_paths) *
1607 sizeof(*stats));
1608 size_t i, num = 0;
1609 for (i = 0; i < s->nb_sysinclude_paths; i++)
1610 tcc_normalize_inc_dirs_aux(stats, &num, &s->sysinclude_paths[i]);
1611 for (i = 0; i < s->nb_include_paths; i++)
1612 tcc_normalize_inc_dirs_aux(stats, &num, &s->include_paths[i]);
1613 tcc_free(stats);
1616 LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
1618 s->output_type = output_type;
1620 if (s->output_type == TCC_OUTPUT_PREPROCESS) {
1621 if (!s->outfile) {
1622 s->ppfp = stdout;
1623 } else {
1624 s->ppfp = fopen(s->outfile, "w");
1625 if (!s->ppfp)
1626 tcc_error("could not write '%s'", s->outfile);
1630 if (!s->nostdinc) {
1631 /* default include paths */
1632 /* -isystem paths have already been handled */
1633 tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS);
1636 /* if bound checking, then add corresponding sections */
1637 #ifdef CONFIG_TCC_BCHECK
1638 if (s->do_bounds_check) {
1639 /* define symbol */
1640 tcc_define_symbol(s, "__BOUNDS_CHECKING_ON", NULL);
1641 /* create bounds sections */
1642 bounds_section = new_section(s, ".bounds",
1643 SHT_PROGBITS, SHF_ALLOC);
1644 lbounds_section = new_section(s, ".lbounds",
1645 SHT_PROGBITS, SHF_ALLOC);
1647 #endif
1649 if (s->char_is_unsigned) {
1650 tcc_define_symbol(s, "__CHAR_UNSIGNED__", NULL);
1653 /* add debug sections */
1654 if (s->do_debug) {
1655 /* stab symbols */
1656 stab_section = new_section(s, ".stab", SHT_PROGBITS, 0);
1657 stab_section->sh_entsize = sizeof(Stab_Sym);
1658 stabstr_section = new_section(s, ".stabstr", SHT_STRTAB, 0);
1659 put_elf_str(stabstr_section, "");
1660 stab_section->link = stabstr_section;
1661 /* put first entry */
1662 put_stabs("", 0, 0, 0, 0);
1665 tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
1666 #ifdef TCC_TARGET_PE
1667 # ifdef _WIN32
1668 tcc_add_systemdir(s);
1669 # endif
1670 #else
1671 /* add libc crt1/crti objects */
1672 if ((output_type == TCC_OUTPUT_EXE || output_type == TCC_OUTPUT_DLL) &&
1673 !s->nostdlib) {
1674 if (output_type != TCC_OUTPUT_DLL)
1675 tcc_add_crt(s, "crt1.o");
1676 tcc_add_crt(s, "crti.o");
1678 #endif
1679 #ifdef CONFIG_TCC_BCHECK
1680 if (s->do_bounds_check && (output_type == TCC_OUTPUT_EXE))
1682 /* force a bcheck.o linking */
1683 addr_t func = TOK___bound_init;
1684 Sym *sym = external_global_sym(func, &func_old_type, 0);
1685 if (!sym->c)
1686 put_extern_sym(sym, NULL, 0, 0);
1688 #endif
1689 if (s->normalize_inc_dirs)
1690 tcc_normalize_inc_dirs(s);
1691 return 0;
1694 LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
1696 tcc_free(s->tcc_lib_path);
1697 s->tcc_lib_path = tcc_strdup(path);
1700 #define WD_ALL 0x0001 /* warning is activated when using -Wall */
1701 #define FD_INVERT 0x0002 /* invert value before storing */
1703 typedef struct FlagDef {
1704 uint16_t offset;
1705 uint16_t flags;
1706 const char *name;
1707 } FlagDef;
1709 static const FlagDef warning_defs[] = {
1710 { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
1711 { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
1712 { offsetof(TCCState, warn_error), 0, "error" },
1713 { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL,
1714 "implicit-function-declaration" },
1717 ST_FUNC int set_flag(TCCState *s, const FlagDef *flags, int nb_flags,
1718 const char *name, int value)
1720 int i;
1721 const FlagDef *p;
1722 const char *r;
1724 r = name;
1725 if (r[0] == 'n' && r[1] == 'o' && r[2] == '-') {
1726 r += 3;
1727 value = !value;
1729 for(i = 0, p = flags; i < nb_flags; i++, p++) {
1730 if (!strcmp(r, p->name))
1731 goto found;
1733 return -1;
1734 found:
1735 if (p->flags & FD_INVERT)
1736 value = !value;
1737 *(int *)((uint8_t *)s + p->offset) = value;
1738 return 0;
1741 /* set/reset a warning */
1742 static int tcc_set_warning(TCCState *s, const char *warning_name, int value)
1744 int i;
1745 const FlagDef *p;
1747 if (!strcmp(warning_name, "all")) {
1748 for(i = 0, p = warning_defs; i < countof(warning_defs); i++, p++) {
1749 if (p->flags & WD_ALL)
1750 *(int *)((uint8_t *)s + p->offset) = 1;
1752 return 0;
1753 } else {
1754 return set_flag(s, warning_defs, countof(warning_defs),
1755 warning_name, value);
1759 static const FlagDef flag_defs[] = {
1760 { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" },
1761 { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" },
1762 { offsetof(TCCState, nocommon), FD_INVERT, "common" },
1763 { offsetof(TCCState, leading_underscore), 0, "leading-underscore" },
1764 { offsetof(TCCState, ms_extensions), 0, "ms-extensions" },
1765 { offsetof(TCCState, old_struct_init_code), 0, "old-struct-init-code" },
1766 { offsetof(TCCState, dollars_in_identifiers), 0, "dollars-in-identifiers" },
1767 { offsetof(TCCState, normalize_inc_dirs), 0, "normalize-inc-dirs" },
1770 /* set/reset a flag */
1771 static int tcc_set_flag(TCCState *s, const char *flag_name, int value)
1773 return set_flag(s, flag_defs, countof(flag_defs),
1774 flag_name, value);
1778 static int strstart(const char *val, const char **str)
1780 const char *p, *q;
1781 p = *str;
1782 q = val;
1783 while (*q) {
1784 if (*p != *q)
1785 return 0;
1786 p++;
1787 q++;
1789 *str = p;
1790 return 1;
1793 /* Like strstart, but automatically takes into account that ld options can
1795 * - start with double or single dash (e.g. '--soname' or '-soname')
1796 * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so'
1797 * or '-Wl,-soname=x.so')
1799 * you provide `val` always in 'option[=]' form (no leading -)
1801 static int link_option(const char *str, const char *val, const char **ptr)
1803 const char *p, *q;
1805 /* there should be 1 or 2 dashes */
1806 if (*str++ != '-')
1807 return 0;
1808 if (*str == '-')
1809 str++;
1811 /* then str & val should match (potentialy up to '=') */
1812 p = str;
1813 q = val;
1815 while (*q != '\0' && *q != '=') {
1816 if (*p != *q)
1817 return 0;
1818 p++;
1819 q++;
1822 /* '=' near eos means ',' or '=' is ok */
1823 if (*q == '=') {
1824 if (*p != ',' && *p != '=')
1825 return 0;
1826 p++;
1827 q++;
1830 if (ptr)
1831 *ptr = p;
1832 return 1;
1835 static const char *skip_linker_arg(const char **str)
1837 const char *s1 = *str;
1838 const char *s2 = strchr(s1, ',');
1839 *str = s2 ? s2++ : (s2 = s1 + strlen(s1));
1840 return s2;
1843 static char *copy_linker_arg(const char *p)
1845 const char *q = p;
1846 skip_linker_arg(&q);
1847 return pstrncpy(tcc_malloc(q - p + 1), p, q - p);
1850 /* set linker options */
1851 static int tcc_set_linker(TCCState *s, const char *option)
1853 while (option && *option) {
1855 const char *p = option;
1856 char *end = NULL;
1857 int ignoring = 0;
1859 if (link_option(option, "Bsymbolic", &p)) {
1860 s->symbolic = 1;
1861 } else if (link_option(option, "nostdlib", &p)) {
1862 s->nostdlib = 1;
1863 } else if (link_option(option, "fini=", &p)) {
1864 s->fini_symbol = copy_linker_arg(p);
1865 ignoring = 1;
1866 } else if (link_option(option, "image-base=", &p)
1867 || link_option(option, "Ttext=", &p)) {
1868 s->text_addr = strtoull(p, &end, 16);
1869 s->has_text_addr = 1;
1870 } else if (link_option(option, "init=", &p)) {
1871 s->init_symbol = copy_linker_arg(p);
1872 ignoring = 1;
1873 } else if (link_option(option, "oformat=", &p)) {
1874 #if defined(TCC_TARGET_PE)
1875 if (strstart("pe-", &p)) {
1876 #elif defined(TCC_TARGET_ARM64) || defined(TCC_TARGET_X86_64)
1877 if (strstart("elf64-", &p)) {
1878 #else
1879 if (strstart("elf32-", &p)) {
1880 #endif
1881 s->output_format = TCC_OUTPUT_FORMAT_ELF;
1882 } else if (!strcmp(p, "binary")) {
1883 s->output_format = TCC_OUTPUT_FORMAT_BINARY;
1884 #ifdef TCC_TARGET_COFF
1885 } else if (!strcmp(p, "coff")) {
1886 s->output_format = TCC_OUTPUT_FORMAT_COFF;
1887 #endif
1888 } else
1889 goto err;
1891 } else if (link_option(option, "as-needed", &p)) {
1892 ignoring = 1;
1893 } else if (link_option(option, "O", &p)) {
1894 ignoring = 1;
1895 } else if (link_option(option, "rpath=", &p)) {
1896 s->rpath = copy_linker_arg(p);
1897 } else if (link_option(option, "section-alignment=", &p)) {
1898 s->section_align = strtoul(p, &end, 16);
1899 } else if (link_option(option, "soname=", &p)) {
1900 s->soname = copy_linker_arg(p);
1901 #ifdef TCC_TARGET_PE
1902 } else if (link_option(option, "file-alignment=", &p)) {
1903 s->pe_file_align = strtoul(p, &end, 16);
1904 } else if (link_option(option, "stack=", &p)) {
1905 s->pe_stack_size = strtoul(p, &end, 10);
1906 } else if (link_option(option, "subsystem=", &p)) {
1907 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
1908 if (!strcmp(p, "native")) {
1909 s->pe_subsystem = 1;
1910 } else if (!strcmp(p, "console")) {
1911 s->pe_subsystem = 3;
1912 } else if (!strcmp(p, "gui")) {
1913 s->pe_subsystem = 2;
1914 } else if (!strcmp(p, "posix")) {
1915 s->pe_subsystem = 7;
1916 } else if (!strcmp(p, "efiapp")) {
1917 s->pe_subsystem = 10;
1918 } else if (!strcmp(p, "efiboot")) {
1919 s->pe_subsystem = 11;
1920 } else if (!strcmp(p, "efiruntime")) {
1921 s->pe_subsystem = 12;
1922 } else if (!strcmp(p, "efirom")) {
1923 s->pe_subsystem = 13;
1924 #elif defined(TCC_TARGET_ARM)
1925 if (!strcmp(p, "wince")) {
1926 s->pe_subsystem = 9;
1927 #endif
1928 } else
1929 goto err;
1930 #endif
1931 } else
1932 goto err;
1934 if (ignoring && s->warn_unsupported) err: {
1935 char buf[100], *e;
1936 pstrcpy(buf, sizeof buf, e = copy_linker_arg(option)), tcc_free(e);
1937 if (ignoring)
1938 tcc_warning("unsupported linker option '%s'", buf);
1939 else
1940 tcc_error("unsupported linker option '%s'", buf);
1942 option = skip_linker_arg(&p);
1944 return 0;
1947 typedef struct TCCOption {
1948 const char *name;
1949 uint16_t index;
1950 uint16_t flags;
1951 } TCCOption;
1953 enum {
1954 TCC_OPTION_HELP,
1955 TCC_OPTION_I,
1956 TCC_OPTION_D,
1957 TCC_OPTION_U,
1958 TCC_OPTION_P,
1959 TCC_OPTION_L,
1960 TCC_OPTION_B,
1961 TCC_OPTION_l,
1962 TCC_OPTION_bench,
1963 TCC_OPTION_bt,
1964 TCC_OPTION_b,
1965 TCC_OPTION_g,
1966 TCC_OPTION_c,
1967 TCC_OPTION_dumpversion,
1968 TCC_OPTION_d,
1969 TCC_OPTION_float_abi,
1970 TCC_OPTION_static,
1971 TCC_OPTION_std,
1972 TCC_OPTION_shared,
1973 TCC_OPTION_soname,
1974 TCC_OPTION_o,
1975 TCC_OPTION_r,
1976 TCC_OPTION_s,
1977 TCC_OPTION_traditional,
1978 TCC_OPTION_Wl,
1979 TCC_OPTION_W,
1980 TCC_OPTION_O,
1981 TCC_OPTION_m,
1982 TCC_OPTION_f,
1983 TCC_OPTION_isystem,
1984 TCC_OPTION_iwithprefix,
1985 TCC_OPTION_nostdinc,
1986 TCC_OPTION_nostdlib,
1987 TCC_OPTION_print_search_dirs,
1988 TCC_OPTION_rdynamic,
1989 TCC_OPTION_pedantic,
1990 TCC_OPTION_pthread,
1991 TCC_OPTION_run,
1992 TCC_OPTION_v,
1993 TCC_OPTION_w,
1994 TCC_OPTION_pipe,
1995 TCC_OPTION_E,
1996 TCC_OPTION_MD,
1997 TCC_OPTION_MF,
1998 TCC_OPTION_x
2001 #define TCC_OPTION_HAS_ARG 0x0001
2002 #define TCC_OPTION_NOSEP 0x0002 /* cannot have space before option and arg */
2004 static const TCCOption tcc_options[] = {
2005 { "h", TCC_OPTION_HELP, 0 },
2006 { "-help", TCC_OPTION_HELP, 0 },
2007 { "?", TCC_OPTION_HELP, 0 },
2008 { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
2009 { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
2010 { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
2011 { "P", TCC_OPTION_P, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
2012 { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
2013 { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
2014 { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
2015 { "bench", TCC_OPTION_bench, 0 },
2016 #ifdef CONFIG_TCC_BACKTRACE
2017 { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG },
2018 #endif
2019 #ifdef CONFIG_TCC_BCHECK
2020 { "b", TCC_OPTION_b, 0 },
2021 #endif
2022 { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
2023 { "c", TCC_OPTION_c, 0 },
2024 { "dumpversion", TCC_OPTION_dumpversion, 0},
2025 { "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
2026 #ifdef TCC_TARGET_ARM
2027 { "mfloat-abi", TCC_OPTION_float_abi, TCC_OPTION_HAS_ARG },
2028 #endif
2029 { "static", TCC_OPTION_static, 0 },
2030 { "std", TCC_OPTION_std, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
2031 { "shared", TCC_OPTION_shared, 0 },
2032 { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
2033 { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
2034 { "pedantic", TCC_OPTION_pedantic, 0},
2035 { "pthread", TCC_OPTION_pthread, 0},
2036 { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
2037 { "rdynamic", TCC_OPTION_rdynamic, 0 },
2038 { "r", TCC_OPTION_r, 0 },
2039 { "s", TCC_OPTION_s, 0 },
2040 { "traditional", TCC_OPTION_traditional, 0 },
2041 { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
2042 { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
2043 { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
2044 { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG },
2045 { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
2046 { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
2047 { "iwithprefix", TCC_OPTION_iwithprefix, TCC_OPTION_HAS_ARG },
2048 { "nostdinc", TCC_OPTION_nostdinc, 0 },
2049 { "nostdlib", TCC_OPTION_nostdlib, 0 },
2050 { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
2051 { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
2052 { "w", TCC_OPTION_w, 0 },
2053 { "pipe", TCC_OPTION_pipe, 0},
2054 { "E", TCC_OPTION_E, 0},
2055 { "MD", TCC_OPTION_MD, 0},
2056 { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
2057 { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
2058 { NULL, 0, 0 },
2061 static void parse_option_D(TCCState *s1, const char *optarg)
2063 char *sym = tcc_strdup(optarg);
2064 char *value = strchr(sym, '=');
2065 if (value)
2066 *value++ = '\0';
2067 tcc_define_symbol(s1, sym, value);
2068 tcc_free(sym);
2071 static void args_parser_add_file(TCCState *s, const char* filename, int filetype)
2073 int len = strlen(filename);
2074 char *p = tcc_malloc(len + 2);
2075 if (filetype) {
2076 *p = filetype;
2078 else {
2079 /* use a file extension to detect a filetype */
2080 const char *ext = tcc_fileextension(filename);
2081 if (ext[0]) {
2082 ext++;
2083 if (!strcmp(ext, "S"))
2084 *p = TCC_FILETYPE_ASM_PP;
2085 else
2086 if (!strcmp(ext, "s"))
2087 *p = TCC_FILETYPE_ASM;
2088 else
2089 if (!PATHCMP(ext, "c") || !PATHCMP(ext, "i"))
2090 *p = TCC_FILETYPE_C;
2091 else
2092 *p = TCC_FILETYPE_BINARY;
2094 else {
2095 *p = TCC_FILETYPE_C;
2098 strcpy(p+1, filename);
2099 dynarray_add((void ***)&s->files, &s->nb_files, p);
2102 ST_FUNC int tcc_parse_args1(TCCState *s, int argc, char **argv)
2104 const TCCOption *popt;
2105 const char *optarg, *r;
2106 int optind = 0;
2107 ParseArgsState *pas = s->parse_args_state;
2109 while (optind < argc) {
2111 r = argv[optind++];
2112 if (r[0] != '-' || r[1] == '\0') {
2113 /* handle list files */
2114 if (r[0] == '@' && r[1]) {
2115 char buf[sizeof file->filename], *p;
2116 char **argv = NULL;
2117 int argc = 0;
2118 FILE *fp;
2120 fp = fopen(r + 1, "rb");
2121 if (fp == NULL)
2122 tcc_error("list file '%s' not found", r + 1);
2123 while (fgets(buf, sizeof buf, fp)) {
2124 p = trimfront(trimback(buf, strchr(buf, 0)));
2125 if (0 == *p || ';' == *p)
2126 continue;
2127 dynarray_add((void ***)&argv, &argc, tcc_strdup(p));
2129 fclose(fp);
2130 tcc_parse_args1(s, argc, argv);
2131 dynarray_reset(&argv, &argc);
2132 } else {
2133 args_parser_add_file(s, r, pas->filetype);
2134 if (pas->run) {
2135 optind--;
2136 /* argv[0] will be this file */
2137 break;
2140 continue;
2143 /* find option in table */
2144 for(popt = tcc_options; ; ++popt) {
2145 const char *p1 = popt->name;
2146 const char *r1 = r + 1;
2147 if (p1 == NULL)
2148 tcc_error("invalid option -- '%s'", r);
2149 if (!strstart(p1, &r1))
2150 continue;
2151 optarg = r1;
2152 if (popt->flags & TCC_OPTION_HAS_ARG) {
2153 if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
2154 if (optind >= argc)
2155 tcc_error("argument to '%s' is missing", r);
2156 optarg = argv[optind++];
2158 } else if (*r1 != '\0')
2159 continue;
2160 break;
2163 switch(popt->index) {
2164 case TCC_OPTION_HELP:
2165 return 0;
2166 case TCC_OPTION_I:
2167 tcc_add_include_path(s, optarg);
2168 break;
2169 case TCC_OPTION_D:
2170 parse_option_D(s, optarg);
2171 break;
2172 case TCC_OPTION_U:
2173 tcc_undefine_symbol(s, optarg);
2174 break;
2175 case TCC_OPTION_L:
2176 tcc_add_library_path(s, optarg);
2177 break;
2178 case TCC_OPTION_B:
2179 /* set tcc utilities path (mainly for tcc development) */
2180 tcc_set_lib_path(s, optarg);
2181 break;
2182 case TCC_OPTION_l:
2183 args_parser_add_file(s, r, TCC_FILETYPE_BINARY);
2184 s->nb_libraries++;
2185 break;
2186 case TCC_OPTION_pthread:
2187 parse_option_D(s, "_REENTRANT");
2188 pas->pthread = 1;
2189 break;
2190 case TCC_OPTION_bench:
2191 s->do_bench = 1;
2192 break;
2193 #ifdef CONFIG_TCC_BACKTRACE
2194 case TCC_OPTION_bt:
2195 tcc_set_num_callers(atoi(optarg));
2196 break;
2197 #endif
2198 #ifdef CONFIG_TCC_BCHECK
2199 case TCC_OPTION_b:
2200 s->do_bounds_check = 1;
2201 s->do_debug = 1;
2202 break;
2203 #endif
2204 case TCC_OPTION_g:
2205 s->do_debug = 1;
2206 break;
2207 case TCC_OPTION_c:
2208 if (s->output_type)
2209 tcc_warning("-c: some compiler action already specified (%d)", s->output_type);
2210 s->output_type = TCC_OUTPUT_OBJ;
2211 break;
2212 case TCC_OPTION_d:
2213 if (*optarg == 'D')
2214 s->dflag = 3;
2215 else if (*optarg == 'M')
2216 s->dflag = 7;
2217 else if (*optarg == 'b')
2218 s->dflag = 8;
2219 else
2220 goto unsupported_option;
2221 break;
2222 #ifdef TCC_TARGET_ARM
2223 case TCC_OPTION_float_abi:
2224 /* tcc doesn't support soft float yet */
2225 if (!strcmp(optarg, "softfp")) {
2226 s->float_abi = ARM_SOFTFP_FLOAT;
2227 tcc_undefine_symbol(s, "__ARM_PCS_VFP");
2228 } else if (!strcmp(optarg, "hard"))
2229 s->float_abi = ARM_HARD_FLOAT;
2230 else
2231 tcc_error("unsupported float abi '%s'", optarg);
2232 break;
2233 #endif
2234 case TCC_OPTION_static:
2235 s->static_link = 1;
2236 break;
2237 case TCC_OPTION_std:
2238 /* silently ignore, a current purpose:
2239 allow to use a tcc as a reference compiler for "make test" */
2240 break;
2241 case TCC_OPTION_shared:
2242 if (s->output_type)
2243 tcc_warning("-shared: some compiler action already specified (%d)", s->output_type);
2244 s->output_type = TCC_OUTPUT_DLL;
2245 break;
2246 case TCC_OPTION_soname:
2247 s->soname = tcc_strdup(optarg);
2248 break;
2249 case TCC_OPTION_m:
2250 s->option_m = tcc_strdup(optarg);
2251 break;
2252 case TCC_OPTION_o:
2253 if (s->outfile) {
2254 tcc_warning("multiple -o option");
2255 tcc_free(s->outfile);
2257 s->outfile = tcc_strdup(optarg);
2258 break;
2259 case TCC_OPTION_r:
2260 /* generate a .o merging several output files */
2261 if (s->output_type)
2262 tcc_warning("-r: some compiler action already specified (%d)", s->output_type);
2263 s->option_r = 1;
2264 s->output_type = TCC_OUTPUT_OBJ;
2265 break;
2266 case TCC_OPTION_isystem:
2267 tcc_add_sysinclude_path(s, optarg);
2268 break;
2269 case TCC_OPTION_iwithprefix:
2270 if (1) {
2271 char buf[1024];
2272 int buf_size = sizeof(buf)-1;
2273 char *p = &buf[0];
2275 char *sysroot = "{B}/";
2276 int len = strlen(sysroot);
2277 if (len > buf_size)
2278 len = buf_size;
2279 strncpy(p, sysroot, len);
2280 p += len;
2281 buf_size -= len;
2283 len = strlen(optarg);
2284 if (len > buf_size)
2285 len = buf_size;
2286 strncpy(p, optarg, len+1);
2287 tcc_add_sysinclude_path(s, buf);
2289 break;
2290 case TCC_OPTION_nostdinc:
2291 s->nostdinc = 1;
2292 break;
2293 case TCC_OPTION_nostdlib:
2294 s->nostdlib = 1;
2295 break;
2296 case TCC_OPTION_print_search_dirs:
2297 s->print_search_dirs = 1;
2298 break;
2299 case TCC_OPTION_run:
2300 if (s->output_type)
2301 tcc_warning("-run: some compiler action already specified (%d)", s->output_type);
2302 s->output_type = TCC_OUTPUT_MEMORY;
2303 tcc_set_options(s, optarg);
2304 pas->run = 1;
2305 break;
2306 case TCC_OPTION_v:
2307 do ++s->verbose; while (*optarg++ == 'v');
2308 break;
2309 case TCC_OPTION_f:
2310 if (tcc_set_flag(s, optarg, 1) < 0)
2311 goto unsupported_option;
2312 break;
2313 case TCC_OPTION_W:
2314 if (tcc_set_warning(s, optarg, 1) < 0)
2315 goto unsupported_option;
2316 break;
2317 case TCC_OPTION_w:
2318 s->warn_none = 1;
2319 break;
2320 case TCC_OPTION_rdynamic:
2321 s->rdynamic = 1;
2322 break;
2323 case TCC_OPTION_Wl:
2324 if (optarg && *optarg == '-') {
2325 int offs = 0;
2326 if (!strncmp("-no", optarg+1, 3))
2327 offs += 3;
2328 if (!strcmp("-whole-archive", optarg+1 + offs)) {
2329 args_parser_add_file(s, "", (offs == 0) ? TCC_FILETYPE_AR_WHOLE_ON :
2330 TCC_FILETYPE_AR_WHOLE_OFF);
2331 break;
2334 if (pas->linker_arg.size)
2335 --pas->linker_arg.size, cstr_ccat(&pas->linker_arg, ',');
2336 cstr_cat(&pas->linker_arg, optarg, 0);
2337 break;
2338 case TCC_OPTION_E:
2339 if (s->output_type)
2340 tcc_warning("-E: some compiler action already specified (%d)", s->output_type);
2341 s->output_type = TCC_OUTPUT_PREPROCESS;
2342 break;
2343 case TCC_OPTION_P:
2344 s->Pflag = atoi(optarg) + 1;
2345 break;
2346 case TCC_OPTION_MD:
2347 s->gen_deps = 1;
2348 break;
2349 case TCC_OPTION_MF:
2350 s->deps_outfile = tcc_strdup(optarg);
2351 break;
2352 case TCC_OPTION_dumpversion:
2353 printf ("%s\n", TCC_VERSION);
2354 exit(0);
2355 case TCC_OPTION_s:
2356 s->do_strip = 1;
2357 break;
2358 case TCC_OPTION_traditional:
2359 break;
2360 case TCC_OPTION_x:
2361 if (*optarg == 'c')
2362 pas->filetype = TCC_FILETYPE_C;
2363 else
2364 if (*optarg == 'a')
2365 pas->filetype = TCC_FILETYPE_ASM_PP;
2366 else
2367 if (*optarg == 'n')
2368 pas->filetype = 0;
2369 else
2370 tcc_warning("unsupported language '%s'", optarg);
2371 break;
2372 case TCC_OPTION_O:
2373 if (1) {
2374 int opt = atoi(optarg);
2375 char *sym = "__OPTIMIZE__";
2376 if (opt)
2377 tcc_define_symbol(s, sym, 0);
2378 else
2379 tcc_undefine_symbol(s, sym);
2381 break;
2382 case TCC_OPTION_pedantic:
2383 case TCC_OPTION_pipe:
2384 /* ignored */
2385 break;
2386 default:
2387 unsupported_option:
2388 if (s->warn_unsupported)
2389 tcc_warning("unsupported option '%s'", r);
2390 break;
2393 return optind;
2396 PUB_FUNC int tcc_parse_args(TCCState *s, int argc, char **argv)
2398 ParseArgsState *pas;
2399 int ret, is_allocated = 0;
2401 if (!s->parse_args_state) {
2402 s->parse_args_state = tcc_mallocz(sizeof(ParseArgsState));
2403 cstr_new(&s->parse_args_state->linker_arg);
2404 is_allocated = 1;
2406 pas = s->parse_args_state;
2408 ret = tcc_parse_args1(s, argc, argv);
2410 if (s->output_type == 0)
2411 s->output_type = TCC_OUTPUT_EXE;
2413 if (pas->pthread && s->output_type != TCC_OUTPUT_OBJ)
2414 tcc_set_options(s, "-lpthread");
2416 if (s->output_type == TCC_OUTPUT_EXE)
2417 tcc_set_linker(s, (const char *)pas->linker_arg.data);
2419 if (is_allocated) {
2420 cstr_free(&pas->linker_arg);
2421 tcc_free(pas);
2422 s->parse_args_state = NULL;
2424 return ret;
2427 LIBTCCAPI int tcc_set_options(TCCState *s, const char *str)
2429 const char *s1;
2430 char **argv, *arg;
2431 int argc, len;
2432 int ret;
2434 argc = 0, argv = NULL;
2435 for(;;) {
2436 while (is_space(*str))
2437 str++;
2438 if (*str == '\0')
2439 break;
2440 s1 = str;
2441 while (*str != '\0' && !is_space(*str))
2442 str++;
2443 len = str - s1;
2444 arg = tcc_malloc(len + 1);
2445 pstrncpy(arg, s1, len);
2446 dynarray_add((void ***)&argv, &argc, arg);
2448 ret = tcc_parse_args(s, argc, argv);
2449 dynarray_reset(&argv, &argc);
2450 return ret;
2453 PUB_FUNC void tcc_print_stats(TCCState *s, int64_t total_time)
2455 double tt;
2456 tt = (double)total_time / 1000000.0;
2457 if (tt < 0.001)
2458 tt = 0.001;
2459 if (total_bytes < 1)
2460 total_bytes = 1;
2461 fprintf(stderr, "%d idents, %d lines, %d bytes, %0.3f s, %d lines/s, %0.1f MB/s\n",
2462 tok_ident - TOK_IDENT, total_lines, total_bytes,
2463 tt, (int)(total_lines / tt),
2464 total_bytes / tt / 1000000.0);
2467 PUB_FUNC void tcc_set_environment(TCCState *s)
2469 char * path;
2471 path = getenv("C_INCLUDE_PATH");
2472 if(path != NULL) {
2473 tcc_add_include_path(s, path);
2475 path = getenv("CPATH");
2476 if(path != NULL) {
2477 tcc_add_include_path(s, path);
2479 path = getenv("LIBRARY_PATH");
2480 if(path != NULL) {
2481 tcc_add_library_path(s, path);