Revert "fix-mixed-struct (patch by Pip Cet)"
[tinycc.git] / libtcc.c
blobdf98bb07fabce641237f2a2ca4bf04448f468294
1 /*
2 * TCC - Tiny C Compiler
3 *
4 * Copyright (c) 2001-2004 Fabrice Bellard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
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)
74 {
75 tcc_error("inline asm() not supported");
76 }
77 ST_FUNC void asm_global_instr(void)
78 {
79 tcc_error("inline asm() not supported");
80 }
81 #endif
83 /********************************************************/
84 #ifdef _WIN32
85 static char *normalize_slashes(char *path)
86 {
87 char *p;
88 for (p = path; *p; ++p)
89 if (*p == '\\')
90 *p = '/';
91 return path;
92 }
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)
98 {
99 char path[1024], *p;
100 GetModuleFileNameA(tcc_module, path, sizeof path);
101 p = tcc_basename(normalize_slashes(strlwr(path)));
102 if (p - 5 > path && 0 == strncmp(p - 5, "/bin/", 5))
103 p -= 5;
104 else if (p > path)
105 p--;
106 *p = 0;
107 tcc_set_lib_path(s, path);
110 #ifdef TCC_TARGET_PE
111 static void tcc_add_systemdir(TCCState *s)
113 char buf[1000];
114 GetSystemDirectory(buf, sizeof buf);
115 tcc_add_library_path(s, normalize_slashes(buf));
117 #endif
119 #ifndef CONFIG_TCC_STATIC
120 void dlclose(void *p)
122 FreeLibrary((HMODULE)p);
124 #endif
126 #ifdef LIBTCC_AS_DLL
127 BOOL WINAPI DllMain (HINSTANCE hDll, DWORD dwReason, LPVOID lpReserved)
129 if (DLL_PROCESS_ATTACH == dwReason)
130 tcc_module = hDll;
131 return TRUE;
133 #endif
134 #endif
136 /********************************************************/
137 /* copy a string and truncate it. */
138 PUB_FUNC char *pstrcpy(char *buf, int buf_size, const char *s)
140 char *q, *q_end;
141 int c;
143 if (buf_size > 0) {
144 q = buf;
145 q_end = buf + buf_size - 1;
146 while (q < q_end) {
147 c = *s++;
148 if (c == '\0')
149 break;
150 *q++ = c;
152 *q = '\0';
154 return buf;
157 /* strcat and truncate. */
158 PUB_FUNC char *pstrcat(char *buf, int buf_size, const char *s)
160 int len;
161 len = strlen(buf);
162 if (len < buf_size)
163 pstrcpy(buf + len, buf_size - len, s);
164 return buf;
167 PUB_FUNC char *pstrncpy(char *out, const char *in, size_t num)
169 memcpy(out, in, num);
170 out[num] = '\0';
171 return out;
174 /* extract the basename of a file */
175 PUB_FUNC char *tcc_basename(const char *name)
177 char *p = strchr(name, 0);
178 while (p > name && !IS_DIRSEP(p[-1]))
179 --p;
180 return p;
183 /* extract extension part of a file
185 * (if no extension, return pointer to end-of-string)
186 */
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;
260 };
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 mem_debug_header_t *header;
273 ptr = malloc(sizeof(mem_debug_header_t) + size);
274 if (!ptr)
275 tcc_error("memory full (malloc)");
277 mem_cur_size += size;
278 if (mem_cur_size > mem_max_size)
279 mem_max_size = mem_cur_size;
281 header = (mem_debug_header_t *)ptr;
283 header->magic1 = MEM_DEBUG_MAGIC1;
284 header->magic2 = MEM_DEBUG_MAGIC2;
285 header->size = size;
286 header->line_num = line;
288 strncpy(header->file_name, file, MEM_DEBUG_FILE_LEN);
289 header->file_name[MEM_DEBUG_FILE_LEN] = 0;
291 header->next = mem_debug_chain;
292 header->prev = NULL;
294 if (header->next)
295 header->next->prev = header;
297 mem_debug_chain = header;
299 ptr = (char *)ptr + sizeof(mem_debug_header_t);
300 return ptr;
303 PUB_FUNC void tcc_free_debug(void *ptr)
305 mem_debug_header_t *header;
307 if (!ptr)
308 return;
310 ptr = (char *)ptr - sizeof(mem_debug_header_t);
311 header = (mem_debug_header_t *)ptr;
312 if (header->magic1 != MEM_DEBUG_MAGIC1 ||
313 header->magic2 != MEM_DEBUG_MAGIC2 ||
314 header->size == (size_t)-1 )
316 tcc_error("tcc_free check failed");
319 mem_cur_size -= header->size;
320 header->size = (size_t)-1;
322 if (header->next)
323 header->next->prev = header->prev;
325 if (header->prev)
326 header->prev->next = header->next;
328 if (header == mem_debug_chain)
329 mem_debug_chain = header->next;
331 free(ptr);
335 PUB_FUNC void *tcc_mallocz_debug(unsigned long size, const char *file, int line)
337 void *ptr;
338 ptr = tcc_malloc_debug(size,file,line);
339 memset(ptr, 0, size);
340 return ptr;
343 PUB_FUNC void *tcc_realloc_debug(void *ptr, unsigned long size, const char *file, int line)
345 mem_debug_header_t *header;
346 int mem_debug_chain_update = 0;
348 if (!ptr) {
349 ptr = tcc_malloc_debug(size, file, line);
350 return ptr;
353 ptr = (char *)ptr - sizeof(mem_debug_header_t);
354 header = (mem_debug_header_t *)ptr;
355 if (header->magic1 != MEM_DEBUG_MAGIC1 ||
356 header->magic2 != MEM_DEBUG_MAGIC2 ||
357 header->size == (size_t)-1 )
359 check_error:
360 tcc_error("tcc_realloc check failed");
363 mem_debug_chain_update = (header == mem_debug_chain);
365 mem_cur_size -= header->size;
366 ptr = realloc(ptr, sizeof(mem_debug_header_t) + size);
367 if (!ptr)
368 tcc_error("memory full (realloc)");
370 header = (mem_debug_header_t *)ptr;
371 if (header->magic1 != MEM_DEBUG_MAGIC1 ||
372 header->magic2 != MEM_DEBUG_MAGIC2)
374 goto check_error;
377 mem_cur_size += size;
378 if (mem_cur_size > mem_max_size)
379 mem_max_size = mem_cur_size;
381 header->size = size;
382 if (header->next)
383 header->next->prev = header;
385 if (header->prev)
386 header->prev->next = header;
388 if (mem_debug_chain_update)
389 mem_debug_chain = header;
391 ptr = (char *)ptr + sizeof(mem_debug_header_t);
392 return ptr;
395 PUB_FUNC char *tcc_strdup_debug(const char *str, const char *file, int line)
397 char *ptr;
398 ptr = tcc_malloc_debug(strlen(str) + 1, file, line);
399 strcpy(ptr, str);
400 return ptr;
403 PUB_FUNC void tcc_memstats(int bench)
405 if (mem_cur_size) {
406 mem_debug_header_t *header = mem_debug_chain;
408 fprintf(stderr, "MEM_DEBUG: mem_leak= %d bytes, mem_max_size= %d bytes\n",
409 mem_cur_size, mem_max_size);
411 while (header) {
412 fprintf(stderr, " file %s, line %u: %u bytes\n",
413 header->file_name, header->line_num, header->size);
414 header = header->next;
417 else if (bench)
418 fprintf(stderr, "mem_max_size= %d bytes\n", mem_max_size);
421 #undef MEM_DEBUG_MAGIC1
422 #undef MEM_DEBUG_MAGIC2
423 #undef MEM_DEBUG_FILE_LEN
425 #endif
427 #define free(p) use_tcc_free(p)
428 #define malloc(s) use_tcc_malloc(s)
429 #define realloc(p, s) use_tcc_realloc(p, s)
431 /********************************************************/
432 /* dynarrays */
434 ST_FUNC void dynarray_add(void ***ptab, int *nb_ptr, void *data)
436 int nb, nb_alloc;
437 void **pp;
439 nb = *nb_ptr;
440 pp = *ptab;
441 /* every power of two we double array size */
442 if ((nb & (nb - 1)) == 0) {
443 if (!nb)
444 nb_alloc = 1;
445 else
446 nb_alloc = nb * 2;
447 pp = tcc_realloc(pp, nb_alloc * sizeof(void *));
448 *ptab = pp;
450 pp[nb++] = data;
451 *nb_ptr = nb;
454 ST_FUNC void dynarray_reset(void *pp, int *n)
456 void **p;
457 for (p = *(void***)pp; *n; ++p, --*n)
458 if (*p)
459 tcc_free(*p);
460 tcc_free(*(void**)pp);
461 *(void**)pp = NULL;
464 static void tcc_split_path(TCCState *s, void ***p_ary, int *p_nb_ary, const char *in)
466 const char *p;
467 do {
468 int c;
469 CString str;
471 cstr_new(&str);
472 for (p = in; c = *p, c != '\0' && c != PATHSEP; ++p) {
473 if (c == '{' && p[1] && p[2] == '}') {
474 c = p[1], p += 2;
475 if (c == 'B')
476 cstr_cat(&str, s->tcc_lib_path);
477 } else {
478 cstr_ccat(&str, c);
481 cstr_ccat(&str, '\0');
482 dynarray_add(p_ary, p_nb_ary, str.data);
483 in = p+1;
484 } while (*p);
487 /********************************************************/
489 ST_FUNC Section *new_section(TCCState *s1, const char *name, int sh_type, int sh_flags)
491 Section *sec;
493 sec = tcc_mallocz(sizeof(Section) + strlen(name));
494 strcpy(sec->name, name);
495 sec->sh_type = sh_type;
496 sec->sh_flags = sh_flags;
497 switch(sh_type) {
498 case SHT_HASH:
499 case SHT_REL:
500 case SHT_RELA:
501 case SHT_DYNSYM:
502 case SHT_SYMTAB:
503 case SHT_DYNAMIC:
504 sec->sh_addralign = 4;
505 break;
506 case SHT_STRTAB:
507 sec->sh_addralign = 1;
508 break;
509 default:
510 sec->sh_addralign = 32; /* default conservative alignment */
511 break;
514 if (sh_flags & SHF_PRIVATE) {
515 dynarray_add((void ***)&s1->priv_sections, &s1->nb_priv_sections, sec);
516 } else {
517 sec->sh_num = s1->nb_sections;
518 dynarray_add((void ***)&s1->sections, &s1->nb_sections, sec);
521 return sec;
524 static void free_section(Section *s)
526 tcc_free(s->data);
529 /* realloc section and set its content to zero */
530 ST_FUNC void section_realloc(Section *sec, unsigned long new_size)
532 unsigned long size;
533 unsigned char *data;
535 size = sec->data_allocated;
536 if (size == 0)
537 size = 1;
538 while (size < new_size)
539 size = size * 2;
540 data = tcc_realloc(sec->data, size);
541 memset(data + sec->data_allocated, 0, size - sec->data_allocated);
542 sec->data = data;
543 sec->data_allocated = size;
546 /* reserve at least 'size' bytes in section 'sec' from
547 sec->data_offset. */
548 ST_FUNC void *section_ptr_add(Section *sec, addr_t size)
550 size_t offset, offset1;
552 offset = sec->data_offset;
553 offset1 = offset + size;
554 if (offset1 > sec->data_allocated)
555 section_realloc(sec, offset1);
556 sec->data_offset = offset1;
557 return sec->data + offset;
560 /* reserve at least 'size' bytes from section start */
561 ST_FUNC void section_reserve(Section *sec, unsigned long size)
563 if (size > sec->data_allocated)
564 section_realloc(sec, size);
565 if (size > sec->data_offset)
566 sec->data_offset = size;
569 /* return a reference to a section, and create it if it does not
570 exists */
571 ST_FUNC Section *find_section(TCCState *s1, const char *name)
573 Section *sec;
574 int i;
575 for(i = 1; i < s1->nb_sections; i++) {
576 sec = s1->sections[i];
577 if (!strcmp(name, sec->name))
578 return sec;
580 /* sections are created as PROGBITS */
581 return new_section(s1, name, SHT_PROGBITS, SHF_ALLOC);
584 /* update sym->c so that it points to an external symbol in section
585 'section' with value 'value' */
586 ST_FUNC void put_extern_sym2(Sym *sym, Section *section,
587 addr_t value, unsigned long size,
588 int can_add_underscore)
590 int sym_type, sym_bind, sh_num, info, other;
591 ElfW(Sym) *esym;
592 const char *name;
593 char buf1[256];
595 #ifdef CONFIG_TCC_BCHECK
596 char buf[32];
597 #endif
599 if (section == NULL)
600 sh_num = SHN_UNDEF;
601 else if (section == SECTION_ABS)
602 sh_num = SHN_ABS;
603 else
604 sh_num = section->sh_num;
606 if ((sym->type.t & VT_BTYPE) == VT_FUNC) {
607 sym_type = STT_FUNC;
608 } else if ((sym->type.t & VT_BTYPE) == VT_VOID) {
609 sym_type = STT_NOTYPE;
610 } else {
611 sym_type = STT_OBJECT;
614 if (sym->type.t & VT_STATIC)
615 sym_bind = STB_LOCAL;
616 else {
617 if (sym->type.t & VT_WEAK)
618 sym_bind = STB_WEAK;
619 else
620 sym_bind = STB_GLOBAL;
623 if (!sym->c) {
624 name = get_tok_str(sym->v, NULL);
625 #ifdef CONFIG_TCC_BCHECK
626 if (tcc_state->do_bounds_check) {
627 /* XXX: avoid doing that for statics ? */
628 /* if bound checking is activated, we change some function
629 names by adding the "__bound" prefix */
630 switch(sym->v) {
631 #ifdef TCC_TARGET_PE
632 /* XXX: we rely only on malloc hooks */
633 case TOK_malloc:
634 case TOK_free:
635 case TOK_realloc:
636 case TOK_memalign:
637 case TOK_calloc:
638 #endif
639 case TOK_memcpy:
640 case TOK_memmove:
641 case TOK_memset:
642 case TOK_strlen:
643 case TOK_strcpy:
644 case TOK_alloca:
645 strcpy(buf, "__bound_");
646 strcat(buf, name);
647 name = buf;
648 break;
651 #endif
652 other = 0;
654 #ifdef TCC_TARGET_PE
655 if (sym->type.t & VT_EXPORT)
656 other |= ST_PE_EXPORT;
657 if (sym_type == STT_FUNC && sym->type.ref) {
658 Sym *ref = sym->type.ref;
659 if (ref->a.func_export)
660 other |= ST_PE_EXPORT;
661 if (ref->a.func_call == FUNC_STDCALL && can_add_underscore) {
662 sprintf(buf1, "_%s@%d", name, ref->a.func_args * PTR_SIZE);
663 name = buf1;
664 other |= ST_PE_STDCALL;
665 can_add_underscore = 0;
667 } else {
668 if (find_elf_sym(tcc_state->dynsymtab_section, name))
669 other |= ST_PE_IMPORT;
670 if (sym->type.t & VT_IMPORT)
671 other |= ST_PE_IMPORT;
673 #else
674 if (! (sym->type.t & VT_STATIC))
675 other = (sym->type.t & VT_VIS_MASK) >> VT_VIS_SHIFT;
676 #endif
677 if (tcc_state->leading_underscore && can_add_underscore) {
678 buf1[0] = '_';
679 pstrcpy(buf1 + 1, sizeof(buf1) - 1, name);
680 name = buf1;
682 if (sym->asm_label) {
683 name = sym->asm_label;
685 info = ELFW(ST_INFO)(sym_bind, sym_type);
686 sym->c = add_elf_sym(symtab_section, value, size, info, other, sh_num, name);
687 } else {
688 esym = &((ElfW(Sym) *)symtab_section->data)[sym->c];
689 esym->st_value = value;
690 esym->st_size = size;
691 esym->st_shndx = sh_num;
695 ST_FUNC void put_extern_sym(Sym *sym, Section *section,
696 addr_t value, unsigned long size)
698 put_extern_sym2(sym, section, value, size, 1);
701 /* add a new relocation entry to symbol 'sym' in section 's' */
702 ST_FUNC void greloca(Section *s, Sym *sym, unsigned long offset, int type,
703 addr_t addend)
705 int c = 0;
706 if (sym) {
707 if (0 == sym->c)
708 put_extern_sym(sym, NULL, 0, 0);
709 c = sym->c;
711 /* now we can add ELF relocation info */
712 put_elf_reloca(symtab_section, s, offset, type, c, addend);
715 ST_FUNC void greloc(Section *s, Sym *sym, unsigned long offset, int type)
717 greloca(s, sym, offset, type, 0);
720 /********************************************************/
722 static void strcat_vprintf(char *buf, int buf_size, const char *fmt, va_list ap)
724 int len;
725 len = strlen(buf);
726 vsnprintf(buf + len, buf_size - len, fmt, ap);
729 static void strcat_printf(char *buf, int buf_size, const char *fmt, ...)
731 va_list ap;
732 va_start(ap, fmt);
733 strcat_vprintf(buf, buf_size, fmt, ap);
734 va_end(ap);
737 static void error1(TCCState *s1, int is_warning, const char *fmt, va_list ap)
739 char buf[2048];
740 BufferedFile **pf, *f;
742 buf[0] = '\0';
743 /* use upper file if inline ":asm:" or token ":paste:" */
744 for (f = file; f && f->filename[0] == ':'; f = f->prev)
746 if (f) {
747 for(pf = s1->include_stack; pf < s1->include_stack_ptr; pf++)
748 strcat_printf(buf, sizeof(buf), "In file included from %s:%d:\n",
749 (*pf)->filename, (*pf)->line_num);
750 if (f->line_num > 0) {
751 strcat_printf(buf, sizeof(buf), "%s:%d: ",
752 f->filename, f->line_num);
753 } else {
754 strcat_printf(buf, sizeof(buf), "%s: ",
755 f->filename);
757 } else {
758 strcat_printf(buf, sizeof(buf), "tcc: ");
760 if (is_warning)
761 strcat_printf(buf, sizeof(buf), "warning: ");
762 else
763 strcat_printf(buf, sizeof(buf), "error: ");
764 strcat_vprintf(buf, sizeof(buf), fmt, ap);
766 if (!s1->error_func) {
767 /* default case: stderr */
768 if (s1->ppfp) /* print a newline during tcc -E */
769 fprintf(s1->ppfp, "\n"), fflush(s1->ppfp);
770 fprintf(stderr, "%s\n", buf);
771 fflush(stderr); /* print error/warning now (win32) */
772 } else {
773 s1->error_func(s1->error_opaque, buf);
775 if (!is_warning || s1->warn_error)
776 s1->nb_errors++;
779 LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque,
780 void (*error_func)(void *opaque, const char *msg))
782 s->error_opaque = error_opaque;
783 s->error_func = error_func;
786 /* error without aborting current compilation */
787 PUB_FUNC void tcc_error_noabort(const char *fmt, ...)
789 TCCState *s1 = tcc_state;
790 va_list ap;
792 va_start(ap, fmt);
793 error1(s1, 0, fmt, ap);
794 va_end(ap);
797 PUB_FUNC void tcc_error(const char *fmt, ...)
799 TCCState *s1 = tcc_state;
800 va_list ap;
802 va_start(ap, fmt);
803 error1(s1, 0, fmt, ap);
804 va_end(ap);
805 /* better than nothing: in some cases, we accept to handle errors */
806 if (s1->error_set_jmp_enabled) {
807 longjmp(s1->error_jmp_buf, 1);
808 } else {
809 /* XXX: eliminate this someday */
810 exit(1);
814 PUB_FUNC void tcc_warning(const char *fmt, ...)
816 TCCState *s1 = tcc_state;
817 va_list ap;
819 if (s1->warn_none)
820 return;
822 va_start(ap, fmt);
823 error1(s1, 1, fmt, ap);
824 va_end(ap);
827 /********************************************************/
828 /* I/O layer */
830 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen)
832 BufferedFile *bf;
833 int buflen = initlen ? initlen : IO_BUF_SIZE;
835 bf = tcc_mallocz(sizeof(BufferedFile) + buflen);
836 bf->buf_ptr = bf->buffer;
837 bf->buf_end = bf->buffer + initlen;
838 bf->buf_end[0] = CH_EOB; /* put eob symbol */
839 pstrcpy(bf->filename, sizeof(bf->filename), filename);
840 #ifdef _WIN32
841 normalize_slashes(bf->filename);
842 #endif
843 bf->line_num = 1;
844 bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
845 bf->fd = -1;
846 bf->prev = file;
847 file = bf;
850 ST_FUNC void tcc_close(void)
852 BufferedFile *bf = file;
853 if (bf->fd > 0) {
854 close(bf->fd);
855 total_lines += bf->line_num;
857 file = bf->prev;
858 tcc_free(bf);
861 ST_FUNC int tcc_open(TCCState *s1, const char *filename)
863 int fd;
864 if (strcmp(filename, "-") == 0)
865 fd = 0, filename = "<stdin>";
866 else
867 fd = open(filename, O_RDONLY | O_BINARY);
868 if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3)
869 printf("%s %*s%s\n", fd < 0 ? "nf":"->",
870 (int)(s1->include_stack_ptr - s1->include_stack), "", filename);
871 if (fd < 0)
872 return -1;
874 tcc_open_bf(s1, filename, 0);
875 file->fd = fd;
876 return fd;
879 /* compile the C file opened in 'file'. Return non zero if errors. */
880 static int tcc_compile(TCCState *s1)
882 Sym *define_start;
883 char buf[512];
884 volatile int section_sym;
886 #ifdef INC_DEBUG
887 printf("%s: **** new file\n", file->filename);
888 #endif
889 preprocess_init(s1);
891 cur_text_section = NULL;
892 funcname = "";
893 anon_sym = SYM_FIRST_ANOM;
895 /* file info: full path + filename */
896 section_sym = 0; /* avoid warning */
897 if (s1->do_debug) {
898 section_sym = put_elf_sym(symtab_section, 0, 0,
899 ELFW(ST_INFO)(STB_LOCAL, STT_SECTION), 0,
900 text_section->sh_num, NULL);
901 getcwd(buf, sizeof(buf));
902 #ifdef _WIN32
903 normalize_slashes(buf);
904 #endif
905 pstrcat(buf, sizeof(buf), "/");
906 put_stabs_r(buf, N_SO, 0, 0,
907 text_section->data_offset, text_section, section_sym);
908 put_stabs_r(file->filename, N_SO, 0, 0,
909 text_section->data_offset, text_section, section_sym);
911 /* an elf symbol of type STT_FILE must be put so that STB_LOCAL
912 symbols can be safely used */
913 put_elf_sym(symtab_section, 0, 0,
914 ELFW(ST_INFO)(STB_LOCAL, STT_FILE), 0,
915 SHN_ABS, file->filename);
917 /* define some often used types */
918 int_type.t = VT_INT;
920 char_pointer_type.t = VT_BYTE;
921 mk_pointer(&char_pointer_type);
923 #if PTR_SIZE == 4
924 size_type.t = VT_INT;
925 #else
926 size_type.t = VT_LLONG;
927 #endif
929 func_old_type.t = VT_FUNC;
930 func_old_type.ref = sym_push(SYM_FIELD, &int_type, FUNC_CDECL, FUNC_OLD);
931 #ifdef TCC_TARGET_ARM
932 arm_init(s1);
933 #endif
935 #if 0
936 /* define 'void *alloca(unsigned int)' builtin function */
938 Sym *s1;
940 p = anon_sym++;
941 sym = sym_push(p, mk_pointer(VT_VOID), FUNC_CDECL, FUNC_NEW);
942 s1 = sym_push(SYM_FIELD, VT_UNSIGNED | VT_INT, 0, 0);
943 s1->next = NULL;
944 sym->next = s1;
945 sym_push(TOK_alloca, VT_FUNC | (p << VT_STRUCT_SHIFT), VT_CONST, 0);
947 #endif
949 define_start = define_stack;
950 nocode_wanted = 1;
952 if (setjmp(s1->error_jmp_buf) == 0) {
953 s1->nb_errors = 0;
954 s1->error_set_jmp_enabled = 1;
956 ch = file->buf_ptr[0];
957 tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
958 parse_flags = PARSE_FLAG_PREPROCESS | PARSE_FLAG_TOK_NUM | PARSE_FLAG_TOK_STR;
959 next();
960 decl(VT_CONST);
961 if (tok != TOK_EOF)
962 expect("declaration");
963 check_vstack();
965 /* end of translation unit info */
966 if (s1->do_debug) {
967 put_stabs_r(NULL, N_SO, 0, 0,
968 text_section->data_offset, text_section, section_sym);
972 s1->error_set_jmp_enabled = 0;
974 /* reset define stack, but leave -Dsymbols (may be incorrect if
975 they are undefined) */
976 free_defines(define_start);
978 gen_inline_functions();
980 sym_pop(&global_stack, NULL);
981 sym_pop(&local_stack, NULL);
983 return s1->nb_errors != 0 ? -1 : 0;
986 LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
988 int len, ret;
990 len = strlen(str);
991 tcc_open_bf(s, "<string>", len);
992 memcpy(file->buffer, str, len);
993 ret = tcc_compile(s);
994 tcc_close();
995 return ret;
998 /* define a preprocessor symbol. A value can also be provided with the '=' operator */
999 LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value)
1001 int len1, len2;
1002 /* default value */
1003 if (!value)
1004 value = "1";
1005 len1 = strlen(sym);
1006 len2 = strlen(value);
1008 /* init file structure */
1009 tcc_open_bf(s1, "<define>", len1 + len2 + 1);
1010 memcpy(file->buffer, sym, len1);
1011 file->buffer[len1] = ' ';
1012 memcpy(file->buffer + len1 + 1, value, len2);
1014 /* parse with define parser */
1015 ch = file->buf_ptr[0];
1016 next_nomacro();
1017 parse_define();
1019 tcc_close();
1022 /* undefine a preprocessor symbol */
1023 LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
1025 TokenSym *ts;
1026 Sym *s;
1027 ts = tok_alloc(sym, strlen(sym));
1028 s = define_find(ts->tok);
1029 /* undefine symbol by putting an invalid name */
1030 if (s)
1031 define_undef(s);
1034 /* cleanup all static data used during compilation */
1035 static void tcc_cleanup(void)
1037 if (NULL == tcc_state)
1038 return;
1039 tcc_state = NULL;
1041 preprocess_delete();
1043 /* free sym_pools */
1044 dynarray_reset(&sym_pools, &nb_sym_pools);
1045 /* string buffer */
1046 cstr_free(&tokcstr);
1047 /* reset symbol stack */
1048 sym_free_first = NULL;
1051 LIBTCCAPI TCCState *tcc_new(void)
1053 TCCState *s;
1054 char buffer[100];
1055 int a,b,c;
1057 tcc_cleanup();
1059 s = tcc_mallocz(sizeof(TCCState));
1060 if (!s)
1061 return NULL;
1062 tcc_state = s;
1063 #ifdef _WIN32
1064 tcc_set_lib_path_w32(s);
1065 #else
1066 tcc_set_lib_path(s, CONFIG_TCCDIR);
1067 #endif
1068 s->output_type = 0;
1069 preprocess_new();
1070 s->include_stack_ptr = s->include_stack;
1072 /* we add dummy defines for some special macros to speed up tests
1073 and to have working defined() */
1074 define_push(TOK___LINE__, MACRO_OBJ, NULL, NULL);
1075 define_push(TOK___FILE__, MACRO_OBJ, NULL, NULL);
1076 define_push(TOK___DATE__, MACRO_OBJ, NULL, NULL);
1077 define_push(TOK___TIME__, MACRO_OBJ, NULL, NULL);
1079 /* define __TINYC__ 92X */
1080 sscanf(TCC_VERSION, "%d.%d.%d", &a, &b, &c);
1081 sprintf(buffer, "%d", a*10000 + b*100 + c);
1082 tcc_define_symbol(s, "__TINYC__", buffer);
1084 /* standard defines */
1085 tcc_define_symbol(s, "__STDC__", NULL);
1086 tcc_define_symbol(s, "__STDC_VERSION__", "199901L");
1087 tcc_define_symbol(s, "__STDC_HOSTED__", NULL);
1089 /* target defines */
1090 #if defined(TCC_TARGET_I386)
1091 tcc_define_symbol(s, "__i386__", NULL);
1092 tcc_define_symbol(s, "__i386", NULL);
1093 tcc_define_symbol(s, "i386", NULL);
1094 #elif defined(TCC_TARGET_X86_64)
1095 tcc_define_symbol(s, "__x86_64__", NULL);
1096 #elif defined(TCC_TARGET_ARM)
1097 tcc_define_symbol(s, "__ARM_ARCH_4__", NULL);
1098 tcc_define_symbol(s, "__arm_elf__", NULL);
1099 tcc_define_symbol(s, "__arm_elf", NULL);
1100 tcc_define_symbol(s, "arm_elf", NULL);
1101 tcc_define_symbol(s, "__arm__", NULL);
1102 tcc_define_symbol(s, "__arm", NULL);
1103 tcc_define_symbol(s, "arm", NULL);
1104 tcc_define_symbol(s, "__APCS_32__", NULL);
1105 tcc_define_symbol(s, "__ARMEL__", NULL);
1106 #if defined(TCC_ARM_EABI)
1107 tcc_define_symbol(s, "__ARM_EABI__", NULL);
1108 #endif
1109 #if defined(TCC_ARM_HARDFLOAT)
1110 s->float_abi = ARM_HARD_FLOAT;
1111 tcc_define_symbol(s, "__ARM_PCS_VFP", NULL);
1112 #else
1113 s->float_abi = ARM_SOFTFP_FLOAT;
1114 #endif
1115 #elif defined(TCC_TARGET_ARM64)
1116 tcc_define_symbol(s, "__aarch64__", NULL);
1117 #endif
1119 #ifdef TCC_TARGET_PE
1120 tcc_define_symbol(s, "_WIN32", NULL);
1121 # ifdef TCC_TARGET_X86_64
1122 tcc_define_symbol(s, "_WIN64", NULL);
1123 # endif
1124 #else
1125 tcc_define_symbol(s, "__unix__", NULL);
1126 tcc_define_symbol(s, "__unix", NULL);
1127 tcc_define_symbol(s, "unix", NULL);
1128 # if defined(__linux)
1129 tcc_define_symbol(s, "__linux__", NULL);
1130 tcc_define_symbol(s, "__linux", NULL);
1131 # endif
1132 # if defined(__FreeBSD__)
1133 # define str(s) #s
1134 tcc_define_symbol(s, "__FreeBSD__", str( __FreeBSD__));
1135 # undef str
1136 # endif
1137 # if defined(__FreeBSD_kernel__)
1138 tcc_define_symbol(s, "__FreeBSD_kernel__", NULL);
1139 # endif
1140 #endif
1142 /* TinyCC & gcc defines */
1143 #if defined TCC_TARGET_PE && defined TCC_TARGET_X86_64
1144 tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long");
1145 tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long");
1146 #else
1147 tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
1148 tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
1149 #endif
1151 #ifdef TCC_TARGET_PE
1152 tcc_define_symbol(s, "__WCHAR_TYPE__", "unsigned short");
1153 tcc_define_symbol(s, "__WINT_TYPE__", "unsigned short");
1154 #else
1155 tcc_define_symbol(s, "__WCHAR_TYPE__", "int");
1156 /* wint_t is unsigned int by default, but (signed) int on BSDs
1157 and unsigned short on windows. Other OSes might have still
1158 other conventions, sigh. */
1159 #if defined(__FreeBSD__) || defined (__FreeBSD_kernel__)
1160 tcc_define_symbol(s, "__WINT_TYPE__", "int");
1161 #else
1162 tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int");
1163 #endif
1164 #endif
1166 #ifndef TCC_TARGET_PE
1167 /* glibc defines */
1168 tcc_define_symbol(s, "__REDIRECT(name, proto, alias)", "name proto __asm__ (#alias)");
1169 tcc_define_symbol(s, "__REDIRECT_NTH(name, proto, alias)", "name proto __asm__ (#alias) __THROW");
1170 /* paths for crt objects */
1171 tcc_split_path(s, (void ***)&s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX);
1172 #endif
1174 /* no section zero */
1175 dynarray_add((void ***)&s->sections, &s->nb_sections, NULL);
1177 /* create standard sections */
1178 text_section = new_section(s, ".text", SHT_PROGBITS, SHF_ALLOC | SHF_EXECINSTR);
1179 data_section = new_section(s, ".data", SHT_PROGBITS, SHF_ALLOC | SHF_WRITE);
1180 bss_section = new_section(s, ".bss", SHT_NOBITS, SHF_ALLOC | SHF_WRITE);
1182 /* symbols are always generated for linking stage */
1183 symtab_section = new_symtab(s, ".symtab", SHT_SYMTAB, 0,
1184 ".strtab",
1185 ".hashtab", SHF_PRIVATE);
1186 strtab_section = symtab_section->link;
1187 s->symtab = symtab_section;
1189 /* private symbol table for dynamic symbols */
1190 s->dynsymtab_section = new_symtab(s, ".dynsymtab", SHT_SYMTAB, SHF_PRIVATE,
1191 ".dynstrtab",
1192 ".dynhashtab", SHF_PRIVATE);
1193 s->alacarte_link = 1;
1194 s->nocommon = 1;
1195 s->warn_implicit_function_declaration = 1;
1197 #ifdef CHAR_IS_UNSIGNED
1198 s->char_is_unsigned = 1;
1199 #endif
1200 /* enable this if you want symbols with leading underscore on windows: */
1201 #if 0 /* def TCC_TARGET_PE */
1202 s->leading_underscore = 1;
1203 #endif
1204 #ifdef TCC_TARGET_I386
1205 s->seg_size = 32;
1206 #endif
1207 #ifdef TCC_IS_NATIVE
1208 s->runtime_main = "main";
1209 #endif
1210 return s;
1213 LIBTCCAPI void tcc_delete(TCCState *s1)
1215 int i;
1216 int bench = s1->do_bench;
1218 tcc_cleanup();
1220 /* close a preprocessor output */
1221 if (s1->ppfp && s1->ppfp != stdout)
1222 fclose(s1->ppfp);
1224 /* free all sections */
1225 for(i = 1; i < s1->nb_sections; i++)
1226 free_section(s1->sections[i]);
1227 dynarray_reset(&s1->sections, &s1->nb_sections);
1229 for(i = 0; i < s1->nb_priv_sections; i++)
1230 free_section(s1->priv_sections[i]);
1231 dynarray_reset(&s1->priv_sections, &s1->nb_priv_sections);
1233 /* free any loaded DLLs */
1234 #ifdef TCC_IS_NATIVE
1235 for ( i = 0; i < s1->nb_loaded_dlls; i++) {
1236 DLLReference *ref = s1->loaded_dlls[i];
1237 if ( ref->handle )
1238 dlclose(ref->handle);
1240 #endif
1242 /* free loaded dlls array */
1243 dynarray_reset(&s1->loaded_dlls, &s1->nb_loaded_dlls);
1245 /* free library paths */
1246 dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
1247 dynarray_reset(&s1->crt_paths, &s1->nb_crt_paths);
1249 /* free include paths */
1250 dynarray_reset(&s1->cached_includes, &s1->nb_cached_includes);
1251 dynarray_reset(&s1->include_paths, &s1->nb_include_paths);
1252 dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths);
1254 tcc_free(s1->tcc_lib_path);
1255 tcc_free(s1->soname);
1256 tcc_free(s1->rpath);
1257 tcc_free(s1->init_symbol);
1258 tcc_free(s1->fini_symbol);
1259 tcc_free(s1->outfile);
1260 tcc_free(s1->deps_outfile);
1261 dynarray_reset(&s1->files, &s1->nb_files);
1262 dynarray_reset(&s1->target_deps, &s1->nb_target_deps);
1263 dynarray_reset(&s1->pragma_libs, &s1->nb_pragma_libs);
1265 #ifdef TCC_IS_NATIVE
1266 # ifdef HAVE_SELINUX
1267 munmap (s1->write_mem, s1->mem_size);
1268 munmap (s1->runtime_mem, s1->mem_size);
1269 # else
1270 tcc_free(s1->runtime_mem);
1271 # endif
1272 #endif
1274 tcc_free(s1->sym_attrs);
1275 tcc_free(s1);
1276 tcc_memstats(bench);
1279 LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
1281 tcc_split_path(s, (void ***)&s->include_paths, &s->nb_include_paths, pathname);
1282 return 0;
1285 LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
1287 tcc_split_path(s, (void ***)&s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
1288 return 0;
1291 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags, int filetype)
1293 ElfW(Ehdr) ehdr;
1294 int fd, ret, size;
1296 parse_flags = 0;
1297 #ifdef CONFIG_TCC_ASM
1298 /* if .S file, define __ASSEMBLER__ like gcc does */
1299 if ((filetype == TCC_FILETYPE_ASM) || (filetype == TCC_FILETYPE_ASM_PP)) {
1300 tcc_define_symbol(s1, "__ASSEMBLER__", NULL);
1301 parse_flags = PARSE_FLAG_ASM_FILE;
1303 #endif
1305 /* open the file */
1306 ret = tcc_open(s1, filename);
1307 if (ret < 0) {
1308 if (flags & AFF_PRINT_ERROR)
1309 tcc_error_noabort("file '%s' not found", filename);
1310 return ret;
1313 /* update target deps */
1314 dynarray_add((void ***)&s1->target_deps, &s1->nb_target_deps,
1315 tcc_strdup(filename));
1317 if (flags & AFF_PREPROCESS) {
1318 ret = tcc_preprocess(s1);
1319 goto the_end;
1322 if (filetype == TCC_FILETYPE_C) {
1323 /* C file assumed */
1324 ret = tcc_compile(s1);
1325 goto the_end;
1328 #ifdef CONFIG_TCC_ASM
1329 if (filetype == TCC_FILETYPE_ASM_PP) {
1330 /* non preprocessed assembler */
1331 ret = tcc_assemble(s1, 1);
1332 goto the_end;
1335 if (filetype == TCC_FILETYPE_ASM) {
1336 /* preprocessed assembler */
1337 ret = tcc_assemble(s1, 0);
1338 goto the_end;
1340 #endif
1342 fd = file->fd;
1343 /* assume executable format: auto guess file type */
1344 size = read(fd, &ehdr, sizeof(ehdr));
1345 lseek(fd, 0, SEEK_SET);
1346 if (size <= 0) {
1347 tcc_error_noabort("could not read header");
1348 goto the_end;
1351 if (size == sizeof(ehdr) &&
1352 ehdr.e_ident[0] == ELFMAG0 &&
1353 ehdr.e_ident[1] == ELFMAG1 &&
1354 ehdr.e_ident[2] == ELFMAG2 &&
1355 ehdr.e_ident[3] == ELFMAG3) {
1357 /* do not display line number if error */
1358 file->line_num = 0;
1359 if (ehdr.e_type == ET_REL) {
1360 ret = tcc_load_object_file(s1, fd, 0);
1361 goto the_end;
1364 #ifndef TCC_TARGET_PE
1365 if (ehdr.e_type == ET_DYN) {
1366 if (s1->output_type == TCC_OUTPUT_MEMORY) {
1367 #ifdef TCC_IS_NATIVE
1368 void *h;
1369 h = dlopen(filename, RTLD_GLOBAL | RTLD_LAZY);
1370 if (h)
1371 #endif
1372 ret = 0;
1373 } else {
1374 ret = tcc_load_dll(s1, fd, filename,
1375 (flags & AFF_REFERENCED_DLL) != 0);
1377 goto the_end;
1379 #endif
1380 tcc_error_noabort("unrecognized ELF file");
1381 goto the_end;
1384 if (memcmp((char *)&ehdr, ARMAG, 8) == 0) {
1385 file->line_num = 0; /* do not display line number if error */
1386 ret = tcc_load_archive(s1, fd);
1387 goto the_end;
1390 #ifdef TCC_TARGET_COFF
1391 if (*(uint16_t *)(&ehdr) == COFF_C67_MAGIC) {
1392 ret = tcc_load_coff(s1, fd);
1393 goto the_end;
1395 #endif
1397 #ifdef TCC_TARGET_PE
1398 ret = pe_load_file(s1, filename, fd);
1399 #else
1400 /* as GNU ld, consider it is an ld script if not recognized */
1401 ret = tcc_load_ldscript(s1);
1402 #endif
1403 if (ret < 0)
1404 tcc_error_noabort("unrecognized file type");
1406 the_end:
1407 tcc_close();
1408 return ret;
1411 LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename, int filetype)
1413 if (s->output_type == TCC_OUTPUT_PREPROCESS)
1414 return tcc_add_file_internal(s, filename, AFF_PRINT_ERROR | AFF_PREPROCESS, filetype);
1415 else
1416 return tcc_add_file_internal(s, filename, AFF_PRINT_ERROR, filetype);
1419 LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
1421 tcc_split_path(s, (void ***)&s->library_paths, &s->nb_library_paths, pathname);
1422 return 0;
1425 static int tcc_add_library_internal(TCCState *s, const char *fmt,
1426 const char *filename, int flags, char **paths, int nb_paths)
1428 char buf[1024];
1429 int i;
1431 for(i = 0; i < nb_paths; i++) {
1432 snprintf(buf, sizeof(buf), fmt, paths[i], filename);
1433 if (tcc_add_file_internal(s, buf, flags, TCC_FILETYPE_BINARY) == 0)
1434 return 0;
1436 return -1;
1439 #ifndef TCC_TARGET_PE
1440 /* find and load a dll. Return non zero if not found */
1441 /* XXX: add '-rpath' option support ? */
1442 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags)
1444 return tcc_add_library_internal(s, "%s/%s", filename, flags,
1445 s->library_paths, s->nb_library_paths);
1447 #endif
1449 ST_FUNC int tcc_add_crt(TCCState *s, const char *filename)
1451 if (-1 == tcc_add_library_internal(s, "%s/%s",
1452 filename, 0, s->crt_paths, s->nb_crt_paths))
1453 tcc_error_noabort("file '%s' not found", filename);
1454 return 0;
1457 /* the library name is the same as the argument of the '-l' option */
1458 LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
1460 #ifdef TCC_TARGET_PE
1461 const char *libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
1462 const char **pp = s->static_link ? libs + 4 : libs;
1463 #else
1464 const char *libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
1465 const char **pp = s->static_link ? libs + 1 : libs;
1466 #endif
1467 while (*pp) {
1468 if (0 == tcc_add_library_internal(s, *pp,
1469 libraryname, 0, s->library_paths, s->nb_library_paths))
1470 return 0;
1471 ++pp;
1473 return -1;
1476 PUB_FUNC int tcc_add_library_err(TCCState *s, const char *libname)
1478 int ret = tcc_add_library(s, libname);
1479 if (ret < 0)
1480 tcc_error_noabort("cannot find library 'lib%s'", libname);
1481 return ret;
1484 /* habdle #pragma comment(lib,) */
1485 ST_FUNC void tcc_add_pragma_libs(TCCState *s1)
1487 int i;
1488 for (i = 0; i < s1->nb_pragma_libs; i++)
1489 tcc_add_library_err(s1, s1->pragma_libs[i]);
1492 LIBTCCAPI int tcc_add_symbol(TCCState *s, const char *name, const void *val)
1494 #ifdef TCC_TARGET_PE
1495 /* On x86_64 'val' might not be reachable with a 32bit offset.
1496 So it is handled here as if it were in a DLL. */
1497 pe_putimport(s, 0, name, (uintptr_t)val);
1498 #else
1499 add_elf_sym(symtab_section, (uintptr_t)val, 0,
1500 ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
1501 SHN_ABS, name);
1502 #endif
1503 return 0;
1506 LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
1508 s->output_type = output_type;
1510 if (!s->nostdinc) {
1511 /* default include paths */
1512 /* -isystem paths have already been handled */
1513 tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS);
1516 /* if bound checking, then add corresponding sections */
1517 #ifdef CONFIG_TCC_BCHECK
1518 if (s->do_bounds_check) {
1519 /* define symbol */
1520 tcc_define_symbol(s, "__BOUNDS_CHECKING_ON", NULL);
1521 /* create bounds sections */
1522 bounds_section = new_section(s, ".bounds",
1523 SHT_PROGBITS, SHF_ALLOC);
1524 lbounds_section = new_section(s, ".lbounds",
1525 SHT_PROGBITS, SHF_ALLOC);
1527 #endif
1529 if (s->char_is_unsigned) {
1530 tcc_define_symbol(s, "__CHAR_UNSIGNED__", NULL);
1533 /* add debug sections */
1534 if (s->do_debug) {
1535 /* stab symbols */
1536 stab_section = new_section(s, ".stab", SHT_PROGBITS, 0);
1537 stab_section->sh_entsize = sizeof(Stab_Sym);
1538 stabstr_section = new_section(s, ".stabstr", SHT_STRTAB, 0);
1539 put_elf_str(stabstr_section, "");
1540 stab_section->link = stabstr_section;
1541 /* put first entry */
1542 put_stabs("", 0, 0, 0, 0);
1545 tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
1546 #ifdef TCC_TARGET_PE
1547 # ifdef _WIN32
1548 tcc_add_systemdir(s);
1549 # endif
1550 #else
1551 /* add libc crt1/crti objects */
1552 if ((output_type == TCC_OUTPUT_EXE || output_type == TCC_OUTPUT_DLL) &&
1553 !s->nostdlib) {
1554 if (output_type != TCC_OUTPUT_DLL)
1555 tcc_add_crt(s, "crt1.o");
1556 tcc_add_crt(s, "crti.o");
1558 #endif
1560 #ifdef CONFIG_TCC_BCHECK
1561 if (s->do_bounds_check && (output_type == TCC_OUTPUT_EXE))
1563 /* force a bcheck.o linking */
1564 addr_t func = TOK___bound_init;
1565 Sym *sym = external_global_sym(func, &func_old_type, 0);
1566 if (!sym->c)
1567 put_extern_sym(sym, NULL, 0, 0);
1569 #endif
1571 if (s->output_type == TCC_OUTPUT_PREPROCESS)
1572 print_defines();
1574 return 0;
1577 LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
1579 tcc_free(s->tcc_lib_path);
1580 s->tcc_lib_path = tcc_strdup(path);
1583 #define WD_ALL 0x0001 /* warning is activated when using -Wall */
1584 #define FD_INVERT 0x0002 /* invert value before storing */
1586 typedef struct FlagDef {
1587 uint16_t offset;
1588 uint16_t flags;
1589 const char *name;
1590 } FlagDef;
1592 static const FlagDef warning_defs[] = {
1593 { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
1594 { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
1595 { offsetof(TCCState, warn_error), 0, "error" },
1596 { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL,
1597 "implicit-function-declaration" },
1598 };
1600 ST_FUNC int set_flag(TCCState *s, const FlagDef *flags, int nb_flags,
1601 const char *name, int value)
1603 int i;
1604 const FlagDef *p;
1605 const char *r;
1607 r = name;
1608 if (r[0] == 'n' && r[1] == 'o' && r[2] == '-') {
1609 r += 3;
1610 value = !value;
1612 for(i = 0, p = flags; i < nb_flags; i++, p++) {
1613 if (!strcmp(r, p->name))
1614 goto found;
1616 return -1;
1617 found:
1618 if (p->flags & FD_INVERT)
1619 value = !value;
1620 *(int *)((uint8_t *)s + p->offset) = value;
1621 return 0;
1624 /* set/reset a warning */
1625 static int tcc_set_warning(TCCState *s, const char *warning_name, int value)
1627 int i;
1628 const FlagDef *p;
1630 if (!strcmp(warning_name, "all")) {
1631 for(i = 0, p = warning_defs; i < countof(warning_defs); i++, p++) {
1632 if (p->flags & WD_ALL)
1633 *(int *)((uint8_t *)s + p->offset) = 1;
1635 return 0;
1636 } else {
1637 return set_flag(s, warning_defs, countof(warning_defs),
1638 warning_name, value);
1642 static const FlagDef flag_defs[] = {
1643 { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" },
1644 { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" },
1645 { offsetof(TCCState, nocommon), FD_INVERT, "common" },
1646 { offsetof(TCCState, leading_underscore), 0, "leading-underscore" },
1647 { offsetof(TCCState, ms_extensions), 0, "ms-extensions" },
1648 { offsetof(TCCState, old_struct_init_code), 0, "old-struct-init-code" },
1649 { offsetof(TCCState, dollars_in_identifiers), 0, "dollars-in-identifiers" },
1650 };
1652 /* set/reset a flag */
1653 static int tcc_set_flag(TCCState *s, const char *flag_name, int value)
1655 return set_flag(s, flag_defs, countof(flag_defs),
1656 flag_name, value);
1660 static int strstart(const char *val, const char **str)
1662 const char *p, *q;
1663 p = *str;
1664 q = val;
1665 while (*q) {
1666 if (*p != *q)
1667 return 0;
1668 p++;
1669 q++;
1671 *str = p;
1672 return 1;
1675 /* Like strstart, but automatically takes into account that ld options can
1677 * - start with double or single dash (e.g. '--soname' or '-soname')
1678 * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so'
1679 * or '-Wl,-soname=x.so')
1681 * you provide `val` always in 'option[=]' form (no leading -)
1682 */
1683 static int link_option(const char *str, const char *val, const char **ptr)
1685 const char *p, *q;
1687 /* there should be 1 or 2 dashes */
1688 if (*str++ != '-')
1689 return 0;
1690 if (*str == '-')
1691 str++;
1693 /* then str & val should match (potentialy up to '=') */
1694 p = str;
1695 q = val;
1697 while (*q != '\0' && *q != '=') {
1698 if (*p != *q)
1699 return 0;
1700 p++;
1701 q++;
1704 /* '=' near eos means ',' or '=' is ok */
1705 if (*q == '=') {
1706 if (*p != ',' && *p != '=')
1707 return 0;
1708 p++;
1709 q++;
1712 if (ptr)
1713 *ptr = p;
1714 return 1;
1717 static const char *skip_linker_arg(const char **str)
1719 const char *s1 = *str;
1720 const char *s2 = strchr(s1, ',');
1721 *str = s2 ? s2++ : (s2 = s1 + strlen(s1));
1722 return s2;
1725 static char *copy_linker_arg(const char *p)
1727 const char *q = p;
1728 skip_linker_arg(&q);
1729 return pstrncpy(tcc_malloc(q - p + 1), p, q - p);
1732 /* set linker options */
1733 static int tcc_set_linker(TCCState *s, const char *option)
1735 while (option && *option) {
1737 const char *p = option;
1738 char *end = NULL;
1739 int ignoring = 0;
1741 if (link_option(option, "Bsymbolic", &p)) {
1742 s->symbolic = 1;
1743 } else if (link_option(option, "nostdlib", &p)) {
1744 s->nostdlib = 1;
1745 } else if (link_option(option, "fini=", &p)) {
1746 s->fini_symbol = copy_linker_arg(p);
1747 ignoring = 1;
1748 } else if (link_option(option, "image-base=", &p)
1749 || link_option(option, "Ttext=", &p)) {
1750 s->text_addr = strtoull(p, &end, 16);
1751 s->has_text_addr = 1;
1752 } else if (link_option(option, "init=", &p)) {
1753 s->init_symbol = copy_linker_arg(p);
1754 ignoring = 1;
1755 } else if (link_option(option, "oformat=", &p)) {
1756 #if defined(TCC_TARGET_PE)
1757 if (strstart("pe-", &p)) {
1758 #elif defined(TCC_TARGET_ARM64) || defined(TCC_TARGET_X86_64)
1759 if (strstart("elf64-", &p)) {
1760 #else
1761 if (strstart("elf32-", &p)) {
1762 #endif
1763 s->output_format = TCC_OUTPUT_FORMAT_ELF;
1764 } else if (!strcmp(p, "binary")) {
1765 s->output_format = TCC_OUTPUT_FORMAT_BINARY;
1766 #ifdef TCC_TARGET_COFF
1767 } else if (!strcmp(p, "coff")) {
1768 s->output_format = TCC_OUTPUT_FORMAT_COFF;
1769 #endif
1770 } else
1771 goto err;
1773 } else if (link_option(option, "as-needed", &p)) {
1774 ignoring = 1;
1775 } else if (link_option(option, "O", &p)) {
1776 ignoring = 1;
1777 } else if (link_option(option, "rpath=", &p)) {
1778 s->rpath = copy_linker_arg(p);
1779 } else if (link_option(option, "section-alignment=", &p)) {
1780 s->section_align = strtoul(p, &end, 16);
1781 } else if (link_option(option, "soname=", &p)) {
1782 s->soname = copy_linker_arg(p);
1783 #ifdef TCC_TARGET_PE
1784 } else if (link_option(option, "file-alignment=", &p)) {
1785 s->pe_file_align = strtoul(p, &end, 16);
1786 } else if (link_option(option, "stack=", &p)) {
1787 s->pe_stack_size = strtoul(p, &end, 10);
1788 } else if (link_option(option, "subsystem=", &p)) {
1789 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
1790 if (!strcmp(p, "native")) {
1791 s->pe_subsystem = 1;
1792 } else if (!strcmp(p, "console")) {
1793 s->pe_subsystem = 3;
1794 } else if (!strcmp(p, "gui")) {
1795 s->pe_subsystem = 2;
1796 } else if (!strcmp(p, "posix")) {
1797 s->pe_subsystem = 7;
1798 } else if (!strcmp(p, "efiapp")) {
1799 s->pe_subsystem = 10;
1800 } else if (!strcmp(p, "efiboot")) {
1801 s->pe_subsystem = 11;
1802 } else if (!strcmp(p, "efiruntime")) {
1803 s->pe_subsystem = 12;
1804 } else if (!strcmp(p, "efirom")) {
1805 s->pe_subsystem = 13;
1806 #elif defined(TCC_TARGET_ARM)
1807 if (!strcmp(p, "wince")) {
1808 s->pe_subsystem = 9;
1809 #endif
1810 } else
1811 goto err;
1812 #endif
1813 } else
1814 goto err;
1816 if (ignoring && s->warn_unsupported) err: {
1817 char buf[100], *e;
1818 pstrcpy(buf, sizeof buf, e = copy_linker_arg(option)), tcc_free(e);
1819 if (ignoring)
1820 tcc_warning("unsupported linker option '%s'", buf);
1821 else
1822 tcc_error("unsupported linker option '%s'", buf);
1824 option = skip_linker_arg(&p);
1826 return 0;
1829 typedef struct TCCOption {
1830 const char *name;
1831 uint16_t index;
1832 uint16_t flags;
1833 } TCCOption;
1835 enum {
1836 TCC_OPTION_HELP,
1837 TCC_OPTION_I,
1838 TCC_OPTION_D,
1839 TCC_OPTION_U,
1840 TCC_OPTION_P,
1841 TCC_OPTION_L,
1842 TCC_OPTION_B,
1843 TCC_OPTION_l,
1844 TCC_OPTION_bench,
1845 TCC_OPTION_bt,
1846 TCC_OPTION_b,
1847 TCC_OPTION_g,
1848 TCC_OPTION_c,
1849 TCC_OPTION_dumpversion,
1850 TCC_OPTION_d,
1851 TCC_OPTION_float_abi,
1852 TCC_OPTION_static,
1853 TCC_OPTION_std,
1854 TCC_OPTION_shared,
1855 TCC_OPTION_soname,
1856 TCC_OPTION_o,
1857 TCC_OPTION_r,
1858 TCC_OPTION_s,
1859 TCC_OPTION_traditional,
1860 TCC_OPTION_Wl,
1861 TCC_OPTION_W,
1862 TCC_OPTION_O,
1863 TCC_OPTION_m,
1864 TCC_OPTION_f,
1865 TCC_OPTION_isystem,
1866 TCC_OPTION_iwithprefix,
1867 TCC_OPTION_nostdinc,
1868 TCC_OPTION_nostdlib,
1869 TCC_OPTION_print_search_dirs,
1870 TCC_OPTION_rdynamic,
1871 TCC_OPTION_pedantic,
1872 TCC_OPTION_pthread,
1873 TCC_OPTION_run,
1874 TCC_OPTION_v,
1875 TCC_OPTION_w,
1876 TCC_OPTION_pipe,
1877 TCC_OPTION_E,
1878 TCC_OPTION_MD,
1879 TCC_OPTION_MF,
1880 TCC_OPTION_x,
1881 };
1883 #define TCC_OPTION_HAS_ARG 0x0001
1884 #define TCC_OPTION_NOSEP 0x0002 /* cannot have space before option and arg */
1886 static const TCCOption tcc_options[] = {
1887 { "h", TCC_OPTION_HELP, 0 },
1888 { "-help", TCC_OPTION_HELP, 0 },
1889 { "?", TCC_OPTION_HELP, 0 },
1890 { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
1891 { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
1892 { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
1893 { "P", TCC_OPTION_P, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1894 { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
1895 { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
1896 { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1897 { "bench", TCC_OPTION_bench, 0 },
1898 #ifdef CONFIG_TCC_BACKTRACE
1899 { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG },
1900 #endif
1901 #ifdef CONFIG_TCC_BCHECK
1902 { "b", TCC_OPTION_b, 0 },
1903 #endif
1904 { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1905 { "c", TCC_OPTION_c, 0 },
1906 { "dumpversion", TCC_OPTION_dumpversion, 0},
1907 { "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1908 #ifdef TCC_TARGET_ARM
1909 { "mfloat-abi", TCC_OPTION_float_abi, TCC_OPTION_HAS_ARG },
1910 #endif
1911 { "static", TCC_OPTION_static, 0 },
1912 { "std", TCC_OPTION_std, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1913 { "shared", TCC_OPTION_shared, 0 },
1914 { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
1915 { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
1916 { "pedantic", TCC_OPTION_pedantic, 0},
1917 { "pthread", TCC_OPTION_pthread, 0},
1918 { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1919 { "rdynamic", TCC_OPTION_rdynamic, 0 },
1920 { "r", TCC_OPTION_r, 0 },
1921 { "s", TCC_OPTION_s, 0 },
1922 { "traditional", TCC_OPTION_traditional, 0 },
1923 { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1924 { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1925 { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1926 { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG },
1927 { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1928 { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
1929 { "iwithprefix", TCC_OPTION_iwithprefix, TCC_OPTION_HAS_ARG },
1930 { "nostdinc", TCC_OPTION_nostdinc, 0 },
1931 { "nostdlib", TCC_OPTION_nostdlib, 0 },
1932 { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
1933 { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1934 { "w", TCC_OPTION_w, 0 },
1935 { "pipe", TCC_OPTION_pipe, 0},
1936 { "E", TCC_OPTION_E, 0},
1937 { "MD", TCC_OPTION_MD, 0},
1938 { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
1939 { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
1940 { NULL, 0, 0 },
1941 };
1943 static void parse_option_D(TCCState *s1, const char *optarg)
1945 char *sym = tcc_strdup(optarg);
1946 char *value = strchr(sym, '=');
1947 if (value)
1948 *value++ = '\0';
1949 tcc_define_symbol(s1, sym, value);
1950 tcc_free(sym);
1953 static void args_parser_add_file(TCCState *s, const char* filename, int filetype)
1955 int len = strlen(filename);
1956 char *p = tcc_malloc(len + 2);
1957 if (filetype) {
1958 *p = filetype;
1960 else {
1961 /* use a file extension to detect a filetype */
1962 const char *ext = tcc_fileextension(filename);
1963 if (ext[0]) {
1964 ext++;
1965 if (!strcmp(ext, "S"))
1966 *p = TCC_FILETYPE_ASM_PP;
1967 else
1968 if (!strcmp(ext, "s"))
1969 *p = TCC_FILETYPE_ASM;
1970 else
1971 if (!PATHCMP(ext, "c") || !PATHCMP(ext, "i"))
1972 *p = TCC_FILETYPE_C;
1973 else
1974 *p = TCC_FILETYPE_BINARY;
1976 else {
1977 *p = TCC_FILETYPE_C;
1980 strcpy(p+1, filename);
1981 dynarray_add((void ***)&s->files, &s->nb_files, p);
1984 PUB_FUNC int tcc_parse_args(TCCState *s, int argc, char **argv)
1986 const TCCOption *popt;
1987 const char *optarg, *r;
1988 int run = 0;
1989 int pthread = 0;
1990 int optind = 0;
1991 int filetype = 0;
1993 /* collect -Wl options for input such as "-Wl,-rpath -Wl,<path>" */
1994 CString linker_arg;
1995 cstr_new(&linker_arg);
1997 while (optind < argc) {
1999 r = argv[optind++];
2000 if (r[0] != '-' || r[1] == '\0') {
2001 args_parser_add_file(s, r, filetype);
2002 if (run) {
2003 optind--;
2004 /* argv[0] will be this file */
2005 break;
2007 continue;
2010 /* find option in table */
2011 for(popt = tcc_options; ; ++popt) {
2012 const char *p1 = popt->name;
2013 const char *r1 = r + 1;
2014 if (p1 == NULL)
2015 tcc_error("invalid option -- '%s'", r);
2016 if (!strstart(p1, &r1))
2017 continue;
2018 optarg = r1;
2019 if (popt->flags & TCC_OPTION_HAS_ARG) {
2020 if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
2021 if (optind >= argc)
2022 tcc_error("argument to '%s' is missing", r);
2023 optarg = argv[optind++];
2025 } else if (*r1 != '\0')
2026 continue;
2027 break;
2030 switch(popt->index) {
2031 case TCC_OPTION_HELP:
2032 return 0;
2033 case TCC_OPTION_I:
2034 tcc_add_include_path(s, optarg);
2035 break;
2036 case TCC_OPTION_D:
2037 parse_option_D(s, optarg);
2038 break;
2039 case TCC_OPTION_U:
2040 tcc_undefine_symbol(s, optarg);
2041 break;
2042 case TCC_OPTION_L:
2043 tcc_add_library_path(s, optarg);
2044 break;
2045 case TCC_OPTION_B:
2046 /* set tcc utilities path (mainly for tcc development) */
2047 tcc_set_lib_path(s, optarg);
2048 break;
2049 case TCC_OPTION_l:
2050 args_parser_add_file(s, r, TCC_FILETYPE_BINARY);
2051 s->nb_libraries++;
2052 break;
2053 case TCC_OPTION_pthread:
2054 parse_option_D(s, "_REENTRANT");
2055 pthread = 1;
2056 break;
2057 case TCC_OPTION_bench:
2058 s->do_bench = 1;
2059 break;
2060 #ifdef CONFIG_TCC_BACKTRACE
2061 case TCC_OPTION_bt:
2062 tcc_set_num_callers(atoi(optarg));
2063 break;
2064 #endif
2065 #ifdef CONFIG_TCC_BCHECK
2066 case TCC_OPTION_b:
2067 s->do_bounds_check = 1;
2068 s->do_debug = 1;
2069 break;
2070 #endif
2071 case TCC_OPTION_g:
2072 s->do_debug = 1;
2073 break;
2074 case TCC_OPTION_c:
2075 if (s->output_type)
2076 tcc_warning("-c: some compiler action already specified (%d)", s->output_type);
2077 s->output_type = TCC_OUTPUT_OBJ;
2078 break;
2079 case TCC_OPTION_d:
2080 if (*optarg == 'D')
2081 s->dflag = 1;
2082 else {
2083 if (s->warn_unsupported)
2084 goto unsupported_option;
2085 tcc_error("invalid option -- '%s'", r);
2087 break;
2088 #ifdef TCC_TARGET_ARM
2089 case TCC_OPTION_float_abi:
2090 /* tcc doesn't support soft float yet */
2091 if (!strcmp(optarg, "softfp")) {
2092 s->float_abi = ARM_SOFTFP_FLOAT;
2093 tcc_undefine_symbol(s, "__ARM_PCS_VFP");
2094 } else if (!strcmp(optarg, "hard"))
2095 s->float_abi = ARM_HARD_FLOAT;
2096 else
2097 tcc_error("unsupported float abi '%s'", optarg);
2098 break;
2099 #endif
2100 case TCC_OPTION_static:
2101 s->static_link = 1;
2102 break;
2103 case TCC_OPTION_std:
2104 /* silently ignore, a current purpose:
2105 allow to use a tcc as a reference compiler for "make test" */
2106 break;
2107 case TCC_OPTION_shared:
2108 if (s->output_type)
2109 tcc_warning("-shared: some compiler action already specified (%d)", s->output_type);
2110 s->output_type = TCC_OUTPUT_DLL;
2111 break;
2112 case TCC_OPTION_soname:
2113 s->soname = tcc_strdup(optarg);
2114 break;
2115 case TCC_OPTION_m:
2116 s->option_m = tcc_strdup(optarg);
2117 break;
2118 case TCC_OPTION_o:
2119 if (s->outfile) {
2120 tcc_warning("multiple -o option");
2121 tcc_free(s->outfile);
2123 s->outfile = tcc_strdup(optarg);
2124 break;
2125 case TCC_OPTION_r:
2126 /* generate a .o merging several output files */
2127 if (s->output_type)
2128 tcc_warning("-r: some compiler action already specified (%d)", s->output_type);
2129 s->option_r = 1;
2130 s->output_type = TCC_OUTPUT_OBJ;
2131 break;
2132 case TCC_OPTION_isystem:
2133 tcc_add_sysinclude_path(s, optarg);
2134 break;
2135 case TCC_OPTION_iwithprefix:
2136 if (1) {
2137 char buf[1024];
2138 int buf_size = sizeof(buf)-1;
2139 char *p = &buf[0];
2141 char *sysroot = "{B}/";
2142 int len = strlen(sysroot);
2143 if (len > buf_size)
2144 len = buf_size;
2145 strncpy(p, sysroot, len);
2146 p += len;
2147 buf_size -= len;
2149 len = strlen(optarg);
2150 if (len > buf_size)
2151 len = buf_size;
2152 strncpy(p, optarg, len+1);
2153 tcc_add_sysinclude_path(s, buf);
2155 break;
2156 case TCC_OPTION_nostdinc:
2157 s->nostdinc = 1;
2158 break;
2159 case TCC_OPTION_nostdlib:
2160 s->nostdlib = 1;
2161 break;
2162 case TCC_OPTION_print_search_dirs:
2163 s->print_search_dirs = 1;
2164 break;
2165 case TCC_OPTION_run:
2166 if (s->output_type)
2167 tcc_warning("-run: some compiler action already specified (%d)", s->output_type);
2168 s->output_type = TCC_OUTPUT_MEMORY;
2169 tcc_set_options(s, optarg);
2170 run = 1;
2171 break;
2172 case TCC_OPTION_v:
2173 do ++s->verbose; while (*optarg++ == 'v');
2174 break;
2175 case TCC_OPTION_f:
2176 if (tcc_set_flag(s, optarg, 1) < 0 && s->warn_unsupported)
2177 goto unsupported_option;
2178 break;
2179 case TCC_OPTION_W:
2180 if (tcc_set_warning(s, optarg, 1) < 0 &&
2181 s->warn_unsupported)
2182 goto unsupported_option;
2183 break;
2184 case TCC_OPTION_w:
2185 s->warn_none = 1;
2186 break;
2187 case TCC_OPTION_rdynamic:
2188 s->rdynamic = 1;
2189 break;
2190 case TCC_OPTION_Wl:
2191 if (linker_arg.size)
2192 --linker_arg.size, cstr_ccat(&linker_arg, ',');
2193 cstr_cat(&linker_arg, optarg);
2194 cstr_ccat(&linker_arg, '\0');
2195 break;
2196 case TCC_OPTION_E:
2197 if (s->output_type)
2198 tcc_warning("-E: some compiler action already specified (%d)", s->output_type);
2199 s->output_type = TCC_OUTPUT_PREPROCESS;
2200 break;
2201 case TCC_OPTION_P:
2202 s->Pflag = atoi(optarg) + 1;
2203 break;
2204 case TCC_OPTION_MD:
2205 s->gen_deps = 1;
2206 break;
2207 case TCC_OPTION_MF:
2208 s->deps_outfile = tcc_strdup(optarg);
2209 break;
2210 case TCC_OPTION_dumpversion:
2211 printf ("%s\n", TCC_VERSION);
2212 exit(0);
2213 case TCC_OPTION_s:
2214 s->do_strip = 1;
2215 break;
2216 case TCC_OPTION_traditional:
2217 break;
2218 case TCC_OPTION_x:
2219 if (*optarg == 'c')
2220 filetype = TCC_FILETYPE_C;
2221 else
2222 if (*optarg == 'a')
2223 filetype = TCC_FILETYPE_ASM_PP;
2224 else
2225 if (*optarg == 'n')
2226 filetype = 0;
2227 else
2228 tcc_warning("unsupported language '%s'", optarg);
2229 break;
2230 case TCC_OPTION_O:
2231 if (1) {
2232 int opt = atoi(optarg);
2233 char *sym = "__OPTIMIZE__";
2234 if (opt)
2235 tcc_define_symbol(s, sym, 0);
2236 else
2237 tcc_undefine_symbol(s, sym);
2239 break;
2240 case TCC_OPTION_pedantic:
2241 case TCC_OPTION_pipe:
2242 /* ignored */
2243 break;
2244 default:
2245 if (s->warn_unsupported) {
2246 unsupported_option:
2247 tcc_warning("unsupported option '%s'", r);
2249 break;
2253 if (s->output_type == 0)
2254 s->output_type = TCC_OUTPUT_EXE;
2256 if (pthread && s->output_type != TCC_OUTPUT_OBJ)
2257 tcc_set_options(s, "-lpthread");
2259 if (s->output_type == TCC_OUTPUT_EXE)
2260 tcc_set_linker(s, (const char *)linker_arg.data);
2261 cstr_free(&linker_arg);
2263 return optind;
2266 LIBTCCAPI int tcc_set_options(TCCState *s, const char *str)
2268 const char *s1;
2269 char **argv, *arg;
2270 int argc, len;
2271 int ret;
2273 argc = 0, argv = NULL;
2274 for(;;) {
2275 while (is_space(*str))
2276 str++;
2277 if (*str == '\0')
2278 break;
2279 s1 = str;
2280 while (*str != '\0' && !is_space(*str))
2281 str++;
2282 len = str - s1;
2283 arg = tcc_malloc(len + 1);
2284 pstrncpy(arg, s1, len);
2285 dynarray_add((void ***)&argv, &argc, arg);
2287 ret = tcc_parse_args(s, argc, argv);
2288 dynarray_reset(&argv, &argc);
2289 return ret;
2292 PUB_FUNC void tcc_print_stats(TCCState *s, int64_t total_time)
2294 double tt;
2295 tt = (double)total_time / 1000000.0;
2296 if (tt < 0.001)
2297 tt = 0.001;
2298 if (total_bytes < 1)
2299 total_bytes = 1;
2300 fprintf(stderr, "%d idents, %d lines, %d bytes, %0.3f s, %d lines/s, %0.1f MB/s\n",
2301 tok_ident - TOK_IDENT, total_lines, total_bytes,
2302 tt, (int)(total_lines / tt),
2303 total_bytes / tt / 1000000.0);
2306 PUB_FUNC void tcc_set_environment(TCCState *s)
2308 char * path;
2310 path = getenv("C_INCLUDE_PATH");
2311 if(path != NULL) {
2312 tcc_add_include_path(s, path);
2314 path = getenv("CPATH");
2315 if(path != NULL) {
2316 tcc_add_include_path(s, path);
2318 path = getenv("LIBRARY_PATH");
2319 if(path != NULL) {
2320 tcc_add_library_path(s, path);