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
23 /********************************************************/
24 /* global variables */
26 /* display benchmark infos */
31 static struct BufferedFile
*file
;
34 static CString tokcstr
; /* current parsed string, if any */
35 /* additional informations about token */
37 #define TOK_FLAG_BOL 0x0001 /* beginning of line before */
38 #define TOK_FLAG_BOF 0x0002 /* beginning of file before */
39 #define TOK_FLAG_ENDIF 0x0004 /* a endif was found matching starting #ifdef */
40 #define TOK_FLAG_EOF 0x0008 /* end of file */
42 static int *macro_ptr
, *macro_ptr_allocated
;
43 static int *unget_saved_macro_ptr
;
44 static int unget_saved_buffer
[TOK_MAX_SIZE
+ 1];
45 static int unget_buffer_enabled
;
46 static int parse_flags
;
47 #define PARSE_FLAG_PREPROCESS 0x0001 /* activate preprocessing */
48 #define PARSE_FLAG_TOK_NUM 0x0002 /* return numbers instead of TOK_PPNUM */
49 #define PARSE_FLAG_LINEFEED 0x0004 /* line feed is returned as a
50 token. line feed is also
52 #define PARSE_FLAG_ASM_COMMENTS 0x0008 /* '#' can be used for line comment */
53 #define PARSE_FLAG_SPACES 0x0010 /* next() returns space tokens (for -E) */
55 static Section
*text_section
, *data_section
, *bss_section
; /* predefined sections */
56 static Section
*cur_text_section
; /* current section where function code is
59 static Section
*last_text_section
; /* to handle .previous asm directive */
61 /* bound check related sections */
62 static Section
*bounds_section
; /* contains global data bound description */
63 static Section
*lbounds_section
; /* contains local data bound description */
65 static Section
*symtab_section
, *strtab_section
;
68 static Section
*stab_section
, *stabstr_section
;
70 /* loc : local variable index
71 ind : output code index
73 anon_sym: anonymous symbol index
75 static int rsym
, anon_sym
, ind
, loc
;
76 /* expression generation modifiers */
77 static int const_wanted
; /* true if constant wanted */
78 static int nocode_wanted
; /* true if no code generation wanted for an expression */
79 static int global_expr
; /* true if compound literals must be allocated
80 globally (used during initializers parsing */
81 static CType func_vt
; /* current function return type (used by return
84 static int last_line_num
, last_ind
, func_ind
; /* debug last line number and pc */
86 static TokenSym
**table_ident
;
87 static TokenSym
*hash_ident
[TOK_HASH_SIZE
];
88 static char token_buf
[STRING_MAX_SIZE
+ 1];
89 static char *funcname
;
90 static Sym
*global_stack
, *local_stack
;
91 static Sym
*define_stack
;
92 static Sym
*global_label_stack
, *local_label_stack
;
93 /* symbol allocator */
94 #define SYM_POOL_NB (8192 / sizeof(Sym))
95 static Sym
*sym_free_first
;
96 static void **sym_pools
;
97 static int nb_sym_pools
;
99 static SValue vstack
[VSTACK_SIZE
], *vtop
;
100 /* some predefined types */
101 static CType char_pointer_type
, func_old_type
, int_type
;
103 /* use GNU C extensions */
104 static int gnu_ext
= 1;
106 /* use Tiny C extensions */
107 static int tcc_ext
= 1;
109 /* max number of callers shown if error */
110 #ifdef CONFIG_TCC_BACKTRACE
112 const char **rt_bound_error_msg
;
113 unsigned long rt_prog_main
;
116 /* XXX: get rid of this ASAP */
117 static struct TCCState
*tcc_state
;
119 /********************************************************/
120 /* function prototypes */
123 static void next(void);
124 char *get_tok_str(int v
, CValue
*cv
);
127 static void parse_expr_type(CType
*type
);
128 static void expr_type(CType
*type
);
129 static void unary_type(CType
*type
);
130 static void block(int *bsym
, int *csym
, int *case_sym
, int *def_sym
,
131 int case_reg
, int is_expr
);
132 static int expr_const(void);
133 static void expr_eq(void);
134 static void gexpr(void);
135 static void gen_inline_functions(void);
136 static void decl(int l
);
137 static void decl_initializer(CType
*type
, Section
*sec
, unsigned long c
,
138 int first
, int size_only
);
139 static void decl_initializer_alloc(CType
*type
, AttributeDef
*ad
, int r
,
140 int has_init
, int v
, int scope
);
142 void gv2(int rc1
, int rc2
);
143 void move_reg(int r
, int s
);
144 void save_regs(int n
);
145 void save_reg(int r
);
150 int get_reg_ex(int rc
,int rc2
);
153 void force_charshort_cast(int t
);
154 static void gen_cast(CType
*type
);
156 static Sym
*sym_find(int v
);
157 static Sym
*sym_push(int v
, CType
*type
, int r
, int c
);
160 static int type_size(CType
*type
, int *a
);
161 static inline CType
*pointed_type(CType
*type
);
162 static int pointed_size(CType
*type
);
163 static int lvalue_type(int t
);
164 static int parse_btype(CType
*type
, AttributeDef
*ad
);
165 static void type_decl(CType
*type
, AttributeDef
*ad
, int *v
, int td
);
166 static int compare_types(CType
*type1
, CType
*type2
, int unqualified
);
167 static int is_compatible_types(CType
*type1
, CType
*type2
);
168 static int is_compatible_parameter_types(CType
*type1
, CType
*type2
);
170 int ieee_finite(double d
);
172 void vpushll(long long v
);
175 void lexpand_nr(void);
176 static void vpush_global_sym(CType
*type
, int v
);
177 void vset(CType
*type
, int r
, int v
);
178 void type_to_str(char *buf
, int buf_size
,
179 CType
*type
, const char *varstr
);
180 static Sym
*get_sym_ref(CType
*type
, Section
*sec
,
181 unsigned long offset
, unsigned long size
);
182 static Sym
*external_global_sym(int v
, CType
*type
, int r
);
184 /* section generation */
185 static void section_realloc(Section
*sec
, unsigned long new_size
);
186 static void *section_ptr_add(Section
*sec
, unsigned long size
);
187 static void put_extern_sym(Sym
*sym
, Section
*section
,
188 unsigned long value
, unsigned long size
);
189 static void greloc(Section
*s
, Sym
*sym
, unsigned long addr
, int type
);
190 static int put_elf_str(Section
*s
, const char *sym
);
191 static int put_elf_sym(Section
*s
,
192 unsigned long value
, unsigned long size
,
193 int info
, int other
, int shndx
, const char *name
);
194 static int add_elf_sym(Section
*s
, uplong value
, unsigned long size
,
195 int info
, int other
, int sh_num
, const char *name
);
196 static void put_elf_reloc(Section
*symtab
, Section
*s
, unsigned long offset
,
197 int type
, int symbol
);
198 static void put_stabs(const char *str
, int type
, int other
, int desc
,
199 unsigned long value
);
200 static void put_stabs_r(const char *str
, int type
, int other
, int desc
,
201 unsigned long value
, Section
*sec
, int sym_index
);
202 static void put_stabn(int type
, int other
, int desc
, int value
);
203 static void put_stabd(int type
, int other
, int desc
);
204 static int tcc_add_dll(TCCState
*s
, const char *filename
, int flags
);
206 #define AFF_PRINT_ERROR 0x0001 /* print error if file not found */
207 #define AFF_REFERENCED_DLL 0x0002 /* load a referenced dll from another dll */
208 #define AFF_PREPROCESS 0x0004 /* preprocess file */
209 static int tcc_add_file_internal(TCCState
*s
, const char *filename
, int flags
);
212 int tcc_output_coff(TCCState
*s1
, FILE *f
);
215 int pe_load_file(struct TCCState
*s1
, const char *filename
, int fd
);
216 int pe_output_file(struct TCCState
*s1
, const char *filename
);
219 #ifdef CONFIG_TCC_ASM
220 static void asm_expr(TCCState
*s1
, ExprValue
*pe
);
221 static int asm_int_expr(TCCState
*s1
);
222 static int find_constraint(ASMOperand
*operands
, int nb_operands
,
223 const char *name
, const char **pp
);
225 static int tcc_assemble(TCCState
*s1
, int do_preprocess
);
228 static void asm_instr(void);
229 static void asm_global_instr(void);
231 /********************************************************/
234 static Sym
*__sym_malloc(void);
235 static inline Sym
*sym_malloc(void);
236 static inline void sym_free(Sym
*sym
);
237 Section
*new_section(TCCState
*s1
, const char *name
, int sh_type
, int sh_flags
);
238 static void free_section(Section
*s
);
239 static void section_realloc(Section
*sec
, unsigned long new_size
);
240 static void *section_ptr_add(Section
*sec
, unsigned long size
);
241 Section
*find_section(TCCState
*s1
, const char *name
);
242 static void put_extern_sym2(
243 Sym
*sym
, Section
*section
,
244 unsigned long value
, unsigned long size
, int can_add_underscore
);
245 static void put_extern_sym(
246 Sym
*sym
, Section
*section
,
247 unsigned long value
, unsigned long size
);
248 static void greloc(Section
*s
, Sym
*sym
, unsigned long offset
, int type
);
250 static void strcat_vprintf(char *buf
, int buf_size
, const char *fmt
, va_list ap
);
251 static void strcat_printf(char *buf
, int buf_size
, const char *fmt
, ...);
253 /* CString handling */
254 static void cstr_realloc(CString
*cstr
, int new_size
);
255 static inline void cstr_ccat(CString
*cstr
, int ch
);
256 static void cstr_cat(CString
*cstr
, const char *str
);
257 static void cstr_wccat(CString
*cstr
, int ch
);
258 static void cstr_new(CString
*cstr
);
259 static void cstr_free(CString
*cstr
);
260 #define cstr_reset(cstr) cstr_free(cstr)
261 static void add_char(CString
*cstr
, int c
);
263 static Sym
*sym_push2(Sym
**ps
, int v
, int t
, long c
);
264 static Sym
*sym_find2(Sym
*s
, int v
);
265 static inline Sym
*struct_find(int v
);
266 static inline Sym
*sym_find(int v
);
267 static Sym
*sym_push(int v
, CType
*type
, int r
, int c
);
268 static Sym
*global_identifier_push(int v
, int t
, int c
);
269 static void sym_pop(Sym
**ptop
, Sym
*b
);
271 BufferedFile
*tcc_open(TCCState
*s1
, const char *filename
);
272 void tcc_close(BufferedFile
*bf
);
273 static int tcc_compile(TCCState
*s1
);
275 void expect(const char *msg
);
277 static void test_lvalue(void);
278 void *resolve_sym(TCCState
*s1
, const char *sym
);
280 static inline int isid(int c
)
282 return (c
>= 'a' && c
<= 'z')
283 || (c
>= 'A' && c
<= 'Z')
287 static inline int isnum(int c
)
289 return c
>= '0' && c
<= '9';
292 static inline int isoct(int c
)
294 return c
>= '0' && c
<= '7';
297 static inline int toup(int c
)
299 if (c
>= 'a' && c
<= 'z')
300 return c
- 'a' + 'A';
305 /********************************************************/
307 #ifdef TCC_TARGET_I386
308 #include "i386-gen.c"
311 #ifdef TCC_TARGET_ARM
315 #ifdef TCC_TARGET_C67
319 #ifdef TCC_TARGET_X86_64
320 #include "x86_64-gen.c"
326 #ifdef CONFIG_TCC_ASM
328 #ifdef TCC_TARGET_I386
329 #include "i386-asm.c"
332 #ifdef TCC_TARGET_X86_64
333 #include "x86_64-asm.c"
338 static void asm_instr(void)
340 error("inline asm() not supported");
342 static void asm_global_instr(void)
344 error("inline asm() not supported");
350 #ifdef TCC_TARGET_COFF
358 /********************************************************/
360 char *normalize_slashes(char *path
)
363 for (p
= path
; *p
; ++p
)
371 /* on win32, we suppose the lib and includes are at the location of 'tcc.exe' */
372 void tcc_set_lib_path_w32(TCCState
*s
)
375 GetModuleFileNameA(tcc_module
, path
, sizeof path
);
376 p
= tcc_basename(normalize_slashes(strlwr(path
)));
377 if (p
- 5 > path
&& 0 == strncmp(p
- 5, "/bin/", 5))
382 tcc_set_lib_path(s
, path
);
386 BOOL WINAPI
DllMain (HANDLE hDll
, DWORD dwReason
, LPVOID lpReserved
)
388 if (DLL_PROCESS_ATTACH
== dwReason
)
395 /********************************************************/
396 #ifdef CONFIG_TCC_STATIC
398 #define RTLD_LAZY 0x001
399 #define RTLD_NOW 0x002
400 #define RTLD_GLOBAL 0x100
401 #define RTLD_DEFAULT NULL
403 /* dummy function for profiling */
404 void *dlopen(const char *filename
, int flag
)
409 void dlclose(void *p
)
413 const char *dlerror(void)
418 typedef struct TCCSyms
{
423 #define TCCSYM(a) { #a, &a, },
425 /* add the symbol you want here if no dynamic linking is done */
426 static TCCSyms tcc_syms
[] = {
427 #if !defined(CONFIG_TCCBOOT)
436 void *resolve_sym(TCCState
*s1
, const char *symbol
)
440 while (p
->str
!= NULL
) {
441 if (!strcmp(p
->str
, symbol
))
448 #elif defined(_WIN32)
449 #define dlclose FreeLibrary
454 void *resolve_sym(TCCState
*s1
, const char *sym
)
456 return dlsym(RTLD_DEFAULT
, sym
);
461 /********************************************************/
463 /* we use our own 'finite' function to avoid potential problems with
464 non standard math libs */
465 /* XXX: endianness dependent */
466 int ieee_finite(double d
)
469 return ((unsigned)((p
[1] | 0x800fffff) + 1)) >> 31;
472 /* copy a string and truncate it. */
473 char *pstrcpy(char *buf
, int buf_size
, const char *s
)
480 q_end
= buf
+ buf_size
- 1;
492 /* strcat and truncate. */
493 char *pstrcat(char *buf
, int buf_size
, const char *s
)
498 pstrcpy(buf
+ len
, buf_size
- len
, s
);
502 /* extract the basename of a file */
503 char *tcc_basename(const char *name
)
505 char *p
= strchr(name
, 0);
506 while (p
> name
&& !IS_PATHSEP(p
[-1]))
511 char *tcc_fileextension (const char *name
)
513 char *b
= tcc_basename(name
);
514 char *e
= strrchr(b
, '.');
515 return e
? e
: strchr(b
, 0);
518 void set_pages_executable(void *ptr
, unsigned long length
)
521 unsigned long old_protect
;
522 VirtualProtect(ptr
, length
, PAGE_EXECUTE_READWRITE
, &old_protect
);
524 unsigned long start
, end
;
525 start
= (unsigned long)ptr
& ~(PAGESIZE
- 1);
526 end
= (unsigned long)ptr
+ length
;
527 end
= (end
+ PAGESIZE
- 1) & ~(PAGESIZE
- 1);
528 mprotect((void *)start
, end
- start
, PROT_READ
| PROT_WRITE
| PROT_EXEC
);
532 /* memory management */
536 unsigned malloc_usable_size(void*);
539 void tcc_free(void *ptr
)
542 mem_cur_size
-= malloc_usable_size(ptr
);
547 void *tcc_malloc(unsigned long size
)
552 error("memory full");
554 mem_cur_size
+= malloc_usable_size(ptr
);
555 if (mem_cur_size
> mem_max_size
)
556 mem_max_size
= mem_cur_size
;
561 void *tcc_mallocz(unsigned long size
)
564 ptr
= tcc_malloc(size
);
565 memset(ptr
, 0, size
);
569 void *tcc_realloc(void *ptr
, unsigned long size
)
573 mem_cur_size
-= malloc_usable_size(ptr
);
575 ptr1
= realloc(ptr
, size
);
577 /* NOTE: count not correct if alloc error, but not critical */
578 mem_cur_size
+= malloc_usable_size(ptr1
);
579 if (mem_cur_size
> mem_max_size
)
580 mem_max_size
= mem_cur_size
;
585 char *tcc_strdup(const char *str
)
588 ptr
= tcc_malloc(strlen(str
) + 1);
593 #define free(p) use_tcc_free(p)
594 #define malloc(s) use_tcc_malloc(s)
595 #define realloc(p, s) use_tcc_realloc(p, s)
597 void dynarray_add(void ***ptab
, int *nb_ptr
, void *data
)
604 /* every power of two we double array size */
605 if ((nb
& (nb
- 1)) == 0) {
610 pp
= tcc_realloc(pp
, nb_alloc
* sizeof(void *));
612 error("memory full");
619 void dynarray_reset(void *pp
, int *n
)
622 for (p
= *(void***)pp
; *n
; ++p
, --*n
)
625 tcc_free(*(void**)pp
);
629 /* symbol allocator */
630 static Sym
*__sym_malloc(void)
632 Sym
*sym_pool
, *sym
, *last_sym
;
635 sym_pool
= tcc_malloc(SYM_POOL_NB
* sizeof(Sym
));
636 dynarray_add(&sym_pools
, &nb_sym_pools
, sym_pool
);
638 last_sym
= sym_free_first
;
640 for(i
= 0; i
< SYM_POOL_NB
; i
++) {
641 sym
->next
= last_sym
;
645 sym_free_first
= last_sym
;
649 static inline Sym
*sym_malloc(void)
652 sym
= sym_free_first
;
654 sym
= __sym_malloc();
655 sym_free_first
= sym
->next
;
659 static inline void sym_free(Sym
*sym
)
661 sym
->next
= sym_free_first
;
662 sym_free_first
= sym
;
665 Section
*new_section(TCCState
*s1
, const char *name
, int sh_type
, int sh_flags
)
669 sec
= tcc_mallocz(sizeof(Section
) + strlen(name
));
670 strcpy(sec
->name
, name
);
671 sec
->sh_type
= sh_type
;
672 sec
->sh_flags
= sh_flags
;
680 sec
->sh_addralign
= 4;
683 sec
->sh_addralign
= 1;
686 sec
->sh_addralign
= 32; /* default conservative alignment */
690 if (sh_flags
& SHF_PRIVATE
) {
691 dynarray_add((void ***)&s1
->priv_sections
, &s1
->nb_priv_sections
, sec
);
693 sec
->sh_num
= s1
->nb_sections
;
694 dynarray_add((void ***)&s1
->sections
, &s1
->nb_sections
, sec
);
700 static void free_section(Section
*s
)
705 /* realloc section and set its content to zero */
706 static void section_realloc(Section
*sec
, unsigned long new_size
)
711 size
= sec
->data_allocated
;
714 while (size
< new_size
)
716 data
= tcc_realloc(sec
->data
, size
);
718 error("memory full");
719 memset(data
+ sec
->data_allocated
, 0, size
- sec
->data_allocated
);
721 sec
->data_allocated
= size
;
724 /* reserve at least 'size' bytes in section 'sec' from
726 static void *section_ptr_add(Section
*sec
, unsigned long size
)
728 unsigned long offset
, offset1
;
730 offset
= sec
->data_offset
;
731 offset1
= offset
+ size
;
732 if (offset1
> sec
->data_allocated
)
733 section_realloc(sec
, offset1
);
734 sec
->data_offset
= offset1
;
735 return sec
->data
+ offset
;
738 /* return a reference to a section, and create it if it does not
740 Section
*find_section(TCCState
*s1
, const char *name
)
744 for(i
= 1; i
< s1
->nb_sections
; i
++) {
745 sec
= s1
->sections
[i
];
746 if (!strcmp(name
, sec
->name
))
749 /* sections are created as PROGBITS */
750 return new_section(s1
, name
, SHT_PROGBITS
, SHF_ALLOC
);
753 /* update sym->c so that it points to an external symbol in section
754 'section' with value 'value' */
755 static void put_extern_sym2(Sym
*sym
, Section
*section
,
756 unsigned long value
, unsigned long size
,
757 int can_add_underscore
)
759 int sym_type
, sym_bind
, sh_num
, info
, other
, attr
;
766 else if (section
== SECTION_ABS
)
769 sh_num
= section
->sh_num
;
773 if ((sym
->type
.t
& VT_BTYPE
) == VT_FUNC
) {
777 attr
= sym
->type
.ref
->r
;
778 if (FUNC_EXPORT(attr
))
780 if (FUNC_CALL(attr
) == FUNC_STDCALL
)
783 } else if ((sym
->type
.t
& VT_BTYPE
) == VT_VOID
) {
784 sym_type
= STT_NOTYPE
;
786 sym_type
= STT_OBJECT
;
789 if (sym
->type
.t
& VT_STATIC
)
790 sym_bind
= STB_LOCAL
;
792 sym_bind
= STB_GLOBAL
;
795 name
= get_tok_str(sym
->v
, NULL
);
796 #ifdef CONFIG_TCC_BCHECK
797 if (tcc_state
->do_bounds_check
) {
800 /* XXX: avoid doing that for statics ? */
801 /* if bound checking is activated, we change some function
802 names by adding the "__bound" prefix */
805 /* XXX: we rely only on malloc hooks */
818 strcpy(buf
, "__bound_");
827 if ((other
& 2) && can_add_underscore
) {
828 sprintf(buf1
, "_%s@%d", name
, FUNC_ARGS(attr
));
832 if (tcc_state
->leading_underscore
&& can_add_underscore
) {
834 pstrcpy(buf1
+ 1, sizeof(buf1
) - 1, name
);
837 info
= ELFW(ST_INFO
)(sym_bind
, sym_type
);
838 sym
->c
= add_elf_sym(symtab_section
, value
, size
, info
, other
, sh_num
, name
);
840 esym
= &((ElfW(Sym
) *)symtab_section
->data
)[sym
->c
];
841 esym
->st_value
= value
;
842 esym
->st_size
= size
;
843 esym
->st_shndx
= sh_num
;
844 esym
->st_other
|= other
;
848 static void put_extern_sym(Sym
*sym
, Section
*section
,
849 unsigned long value
, unsigned long size
)
851 put_extern_sym2(sym
, section
, value
, size
, 1);
854 /* add a new relocation entry to symbol 'sym' in section 's' */
855 static void greloc(Section
*s
, Sym
*sym
, unsigned long offset
, int type
)
858 put_extern_sym(sym
, NULL
, 0, 0);
859 /* now we can add ELF relocation info */
860 put_elf_reloc(symtab_section
, s
, offset
, type
, sym
->c
);
863 static void strcat_vprintf(char *buf
, int buf_size
, const char *fmt
, va_list ap
)
867 vsnprintf(buf
+ len
, buf_size
- len
, fmt
, ap
);
870 static void strcat_printf(char *buf
, int buf_size
, const char *fmt
, ...)
874 strcat_vprintf(buf
, buf_size
, fmt
, ap
);
878 void error1(TCCState
*s1
, int is_warning
, const char *fmt
, va_list ap
)
885 for(f
= s1
->include_stack
; f
< s1
->include_stack_ptr
; f
++)
886 strcat_printf(buf
, sizeof(buf
), "In file included from %s:%d:\n",
887 (*f
)->filename
, (*f
)->line_num
);
888 if (file
->line_num
> 0) {
889 strcat_printf(buf
, sizeof(buf
),
890 "%s:%d: ", file
->filename
, file
->line_num
);
892 strcat_printf(buf
, sizeof(buf
),
893 "%s: ", file
->filename
);
896 strcat_printf(buf
, sizeof(buf
),
900 strcat_printf(buf
, sizeof(buf
), "warning: ");
902 strcat_printf(buf
, sizeof(buf
), "error: ");
903 strcat_vprintf(buf
, sizeof(buf
), fmt
, ap
);
905 if (!s1
->error_func
) {
906 /* default case: stderr */
907 fprintf(stderr
, "%s\n", buf
);
909 s1
->error_func(s1
->error_opaque
, buf
);
911 if (!is_warning
|| s1
->warn_error
)
915 void tcc_set_error_func(TCCState
*s
, void *error_opaque
,
916 void (*error_func
)(void *opaque
, const char *msg
))
918 s
->error_opaque
= error_opaque
;
919 s
->error_func
= error_func
;
922 /* error without aborting current compilation */
923 void error_noabort(const char *fmt
, ...)
925 TCCState
*s1
= tcc_state
;
929 error1(s1
, 0, fmt
, ap
);
933 void error(const char *fmt
, ...)
935 TCCState
*s1
= tcc_state
;
939 error1(s1
, 0, fmt
, ap
);
941 /* better than nothing: in some cases, we accept to handle errors */
942 if (s1
->error_set_jmp_enabled
) {
943 longjmp(s1
->error_jmp_buf
, 1);
945 /* XXX: eliminate this someday */
950 void expect(const char *msg
)
952 error("%s expected", msg
);
955 void warning(const char *fmt
, ...)
957 TCCState
*s1
= tcc_state
;
964 error1(s1
, 1, fmt
, ap
);
971 error("'%c' expected", c
);
975 static void test_lvalue(void)
977 if (!(vtop
->r
& VT_LVAL
))
981 /* CString handling */
983 static void cstr_realloc(CString
*cstr
, int new_size
)
988 size
= cstr
->size_allocated
;
990 size
= 8; /* no need to allocate a too small first string */
991 while (size
< new_size
)
993 data
= tcc_realloc(cstr
->data_allocated
, size
);
995 error("memory full");
996 cstr
->data_allocated
= data
;
997 cstr
->size_allocated
= size
;
1002 static inline void cstr_ccat(CString
*cstr
, int ch
)
1005 size
= cstr
->size
+ 1;
1006 if (size
> cstr
->size_allocated
)
1007 cstr_realloc(cstr
, size
);
1008 ((unsigned char *)cstr
->data
)[size
- 1] = ch
;
1012 static void cstr_cat(CString
*cstr
, const char *str
)
1024 /* add a wide char */
1025 static void cstr_wccat(CString
*cstr
, int ch
)
1028 size
= cstr
->size
+ sizeof(nwchar_t
);
1029 if (size
> cstr
->size_allocated
)
1030 cstr_realloc(cstr
, size
);
1031 *(nwchar_t
*)(((unsigned char *)cstr
->data
) + size
- sizeof(nwchar_t
)) = ch
;
1035 static void cstr_new(CString
*cstr
)
1037 memset(cstr
, 0, sizeof(CString
));
1040 /* free string and reset it to NULL */
1041 static void cstr_free(CString
*cstr
)
1043 tcc_free(cstr
->data_allocated
);
1047 #define cstr_reset(cstr) cstr_free(cstr)
1049 /* XXX: unicode ? */
1050 static void add_char(CString
*cstr
, int c
)
1052 if (c
== '\'' || c
== '\"' || c
== '\\') {
1053 /* XXX: could be more precise if char or string */
1054 cstr_ccat(cstr
, '\\');
1056 if (c
>= 32 && c
<= 126) {
1059 cstr_ccat(cstr
, '\\');
1061 cstr_ccat(cstr
, 'n');
1063 cstr_ccat(cstr
, '0' + ((c
>> 6) & 7));
1064 cstr_ccat(cstr
, '0' + ((c
>> 3) & 7));
1065 cstr_ccat(cstr
, '0' + (c
& 7));
1070 /* push, without hashing */
1071 static Sym
*sym_push2(Sym
**ps
, int v
, int t
, long c
)
1089 /* find a symbol and return its associated structure. 's' is the top
1090 of the symbol stack */
1091 static Sym
*sym_find2(Sym
*s
, int v
)
1101 /* structure lookup */
1102 static inline Sym
*struct_find(int v
)
1105 if ((unsigned)v
>= (unsigned)(tok_ident
- TOK_IDENT
))
1107 return table_ident
[v
]->sym_struct
;
1110 /* find an identifier */
1111 static inline Sym
*sym_find(int v
)
1114 if ((unsigned)v
>= (unsigned)(tok_ident
- TOK_IDENT
))
1116 return table_ident
[v
]->sym_identifier
;
1119 /* push a given symbol on the symbol stack */
1120 static Sym
*sym_push(int v
, CType
*type
, int r
, int c
)
1129 s
= sym_push2(ps
, v
, type
->t
, c
);
1130 s
->type
.ref
= type
->ref
;
1132 /* don't record fields or anonymous symbols */
1134 if (!(v
& SYM_FIELD
) && (v
& ~SYM_STRUCT
) < SYM_FIRST_ANOM
) {
1135 /* record symbol in token array */
1136 ts
= table_ident
[(v
& ~SYM_STRUCT
) - TOK_IDENT
];
1138 ps
= &ts
->sym_struct
;
1140 ps
= &ts
->sym_identifier
;
1147 /* push a global identifier */
1148 static Sym
*global_identifier_push(int v
, int t
, int c
)
1151 s
= sym_push2(&global_stack
, v
, t
, c
);
1152 /* don't record anonymous symbol */
1153 if (v
< SYM_FIRST_ANOM
) {
1154 ps
= &table_ident
[v
- TOK_IDENT
]->sym_identifier
;
1155 /* modify the top most local identifier, so that
1156 sym_identifier will point to 's' when popped */
1158 ps
= &(*ps
)->prev_tok
;
1165 /* pop symbols until top reaches 'b' */
1166 static void sym_pop(Sym
**ptop
, Sym
*b
)
1176 /* remove symbol in token array */
1178 if (!(v
& SYM_FIELD
) && (v
& ~SYM_STRUCT
) < SYM_FIRST_ANOM
) {
1179 ts
= table_ident
[(v
& ~SYM_STRUCT
) - TOK_IDENT
];
1181 ps
= &ts
->sym_struct
;
1183 ps
= &ts
->sym_identifier
;
1194 BufferedFile
*tcc_open(TCCState
*s1
, const char *filename
)
1199 if (strcmp(filename
, "-") == 0)
1200 fd
= 0, filename
= "stdin";
1202 fd
= open(filename
, O_RDONLY
| O_BINARY
);
1203 if ((s1
->verbose
== 2 && fd
>= 0) || s1
->verbose
== 3)
1204 printf("%s %*s%s\n", fd
< 0 ? "nf":"->",
1205 (int)(s1
->include_stack_ptr
- s1
->include_stack
), "", filename
);
1208 bf
= tcc_malloc(sizeof(BufferedFile
));
1210 bf
->buf_ptr
= bf
->buffer
;
1211 bf
->buf_end
= bf
->buffer
;
1212 bf
->buffer
[0] = CH_EOB
; /* put eob symbol */
1213 pstrcpy(bf
->filename
, sizeof(bf
->filename
), filename
);
1215 normalize_slashes(bf
->filename
);
1218 bf
->ifndef_macro
= 0;
1219 bf
->ifdef_stack_ptr
= s1
->ifdef_stack_ptr
;
1220 // printf("opening '%s'\n", filename);
1224 void tcc_close(BufferedFile
*bf
)
1226 total_lines
+= bf
->line_num
;
1231 /* compile the C file opened in 'file'. Return non zero if errors. */
1232 static int tcc_compile(TCCState
*s1
)
1236 volatile int section_sym
;
1239 printf("%s: **** new file\n", file
->filename
);
1241 preprocess_init(s1
);
1243 cur_text_section
= NULL
;
1245 anon_sym
= SYM_FIRST_ANOM
;
1247 /* file info: full path + filename */
1248 section_sym
= 0; /* avoid warning */
1250 section_sym
= put_elf_sym(symtab_section
, 0, 0,
1251 ELFW(ST_INFO
)(STB_LOCAL
, STT_SECTION
), 0,
1252 text_section
->sh_num
, NULL
);
1253 getcwd(buf
, sizeof(buf
));
1255 normalize_slashes(buf
);
1257 pstrcat(buf
, sizeof(buf
), "/");
1258 put_stabs_r(buf
, N_SO
, 0, 0,
1259 text_section
->data_offset
, text_section
, section_sym
);
1260 put_stabs_r(file
->filename
, N_SO
, 0, 0,
1261 text_section
->data_offset
, text_section
, section_sym
);
1263 /* an elf symbol of type STT_FILE must be put so that STB_LOCAL
1264 symbols can be safely used */
1265 put_elf_sym(symtab_section
, 0, 0,
1266 ELFW(ST_INFO
)(STB_LOCAL
, STT_FILE
), 0,
1267 SHN_ABS
, file
->filename
);
1269 /* define some often used types */
1270 int_type
.t
= VT_INT
;
1272 char_pointer_type
.t
= VT_BYTE
;
1273 mk_pointer(&char_pointer_type
);
1275 func_old_type
.t
= VT_FUNC
;
1276 func_old_type
.ref
= sym_push(SYM_FIELD
, &int_type
, FUNC_CDECL
, FUNC_OLD
);
1278 #if defined(TCC_ARM_EABI) && defined(TCC_ARM_VFP)
1279 float_type
.t
= VT_FLOAT
;
1280 double_type
.t
= VT_DOUBLE
;
1282 func_float_type
.t
= VT_FUNC
;
1283 func_float_type
.ref
= sym_push(SYM_FIELD
, &float_type
, FUNC_CDECL
, FUNC_OLD
);
1284 func_double_type
.t
= VT_FUNC
;
1285 func_double_type
.ref
= sym_push(SYM_FIELD
, &double_type
, FUNC_CDECL
, FUNC_OLD
);
1289 /* define 'void *alloca(unsigned int)' builtin function */
1294 sym
= sym_push(p
, mk_pointer(VT_VOID
), FUNC_CDECL
, FUNC_NEW
);
1295 s1
= sym_push(SYM_FIELD
, VT_UNSIGNED
| VT_INT
, 0, 0);
1298 sym_push(TOK_alloca
, VT_FUNC
| (p
<< VT_STRUCT_SHIFT
), VT_CONST
, 0);
1302 define_start
= define_stack
;
1305 if (setjmp(s1
->error_jmp_buf
) == 0) {
1307 s1
->error_set_jmp_enabled
= 1;
1309 ch
= file
->buf_ptr
[0];
1310 tok_flags
= TOK_FLAG_BOL
| TOK_FLAG_BOF
;
1311 parse_flags
= PARSE_FLAG_PREPROCESS
| PARSE_FLAG_TOK_NUM
;
1315 expect("declaration");
1317 /* end of translation unit info */
1319 put_stabs_r(NULL
, N_SO
, 0, 0,
1320 text_section
->data_offset
, text_section
, section_sym
);
1323 s1
->error_set_jmp_enabled
= 0;
1325 /* reset define stack, but leave -Dsymbols (may be incorrect if
1326 they are undefined) */
1327 free_defines(define_start
);
1329 gen_inline_functions();
1331 sym_pop(&global_stack
, NULL
);
1332 sym_pop(&local_stack
, NULL
);
1334 return s1
->nb_errors
!= 0 ? -1 : 0;
1337 int tcc_compile_string(TCCState
*s
, const char *str
)
1339 BufferedFile bf1
, *bf
= &bf1
;
1343 /* init file structure */
1345 /* XXX: avoid copying */
1347 buf
= tcc_malloc(len
+ 1);
1350 memcpy(buf
, str
, len
);
1353 bf
->buf_end
= buf
+ len
;
1354 pstrcpy(bf
->filename
, sizeof(bf
->filename
), "<string>");
1357 ret
= tcc_compile(s
);
1361 /* currently, no need to close */
1365 /* define a preprocessor symbol. A value can also be provided with the '=' operator */
1366 void tcc_define_symbol(TCCState
*s1
, const char *sym
, const char *value
)
1368 BufferedFile bf1
, *bf
= &bf1
;
1370 pstrcpy(bf
->buffer
, IO_BUF_SIZE
, sym
);
1371 pstrcat(bf
->buffer
, IO_BUF_SIZE
, " ");
1375 pstrcat(bf
->buffer
, IO_BUF_SIZE
, value
);
1377 /* init file structure */
1379 bf
->buf_ptr
= bf
->buffer
;
1380 bf
->buf_end
= bf
->buffer
+ strlen(bf
->buffer
);
1381 *bf
->buf_end
= CH_EOB
;
1382 bf
->filename
[0] = '\0';
1386 s1
->include_stack_ptr
= s1
->include_stack
;
1388 /* parse with define parser */
1389 ch
= file
->buf_ptr
[0];
1395 /* undefine a preprocessor symbol */
1396 void tcc_undefine_symbol(TCCState
*s1
, const char *sym
)
1400 ts
= tok_alloc(sym
, strlen(sym
));
1401 s
= define_find(ts
->tok
);
1402 /* undefine symbol by putting an invalid name */
1408 #ifdef CONFIG_TCC_BACKTRACE
1409 /* print the position in the source file of PC value 'pc' by reading
1410 the stabs debug information */
1411 static unsigned long rt_printline(unsigned long wanted_pc
)
1413 Stab_Sym
*sym
, *sym_end
;
1414 char func_name
[128], last_func_name
[128];
1415 unsigned long func_addr
, last_pc
, pc
;
1416 const char *incl_files
[INCLUDE_STACK_SIZE
];
1417 int incl_index
, len
, last_line_num
, i
;
1418 const char *str
, *p
;
1420 fprintf(stderr
, "0x%08lx:", wanted_pc
);
1422 func_name
[0] = '\0';
1425 last_func_name
[0] = '\0';
1426 last_pc
= 0xffffffff;
1428 sym
= (Stab_Sym
*)stab_section
->data
+ 1;
1429 sym_end
= (Stab_Sym
*)(stab_section
->data
+ stab_section
->data_offset
);
1430 while (sym
< sym_end
) {
1431 switch(sym
->n_type
) {
1432 /* function start or end */
1434 if (sym
->n_strx
== 0) {
1435 /* we test if between last line and end of function */
1436 pc
= sym
->n_value
+ func_addr
;
1437 if (wanted_pc
>= last_pc
&& wanted_pc
< pc
)
1439 func_name
[0] = '\0';
1442 str
= stabstr_section
->data
+ sym
->n_strx
;
1443 p
= strchr(str
, ':');
1445 pstrcpy(func_name
, sizeof(func_name
), str
);
1448 if (len
> sizeof(func_name
) - 1)
1449 len
= sizeof(func_name
) - 1;
1450 memcpy(func_name
, str
, len
);
1451 func_name
[len
] = '\0';
1453 func_addr
= sym
->n_value
;
1456 /* line number info */
1458 pc
= sym
->n_value
+ func_addr
;
1459 if (wanted_pc
>= last_pc
&& wanted_pc
< pc
)
1462 last_line_num
= sym
->n_desc
;
1464 strcpy(last_func_name
, func_name
);
1468 str
= stabstr_section
->data
+ sym
->n_strx
;
1470 if (incl_index
< INCLUDE_STACK_SIZE
) {
1471 incl_files
[incl_index
++] = str
;
1479 if (sym
->n_strx
== 0) {
1480 incl_index
= 0; /* end of translation unit */
1482 str
= stabstr_section
->data
+ sym
->n_strx
;
1483 /* do not add path */
1485 if (len
> 0 && str
[len
- 1] != '/')
1493 /* second pass: we try symtab symbols (no line number info) */
1496 ElfW(Sym
) *sym
, *sym_end
;
1499 sym_end
= (ElfW(Sym
) *)(symtab_section
->data
+ symtab_section
->data_offset
);
1500 for(sym
= (ElfW(Sym
) *)symtab_section
->data
+ 1;
1503 type
= ELFW(ST_TYPE
)(sym
->st_info
);
1504 if (type
== STT_FUNC
) {
1505 if (wanted_pc
>= sym
->st_value
&&
1506 wanted_pc
< sym
->st_value
+ sym
->st_size
) {
1507 pstrcpy(last_func_name
, sizeof(last_func_name
),
1508 strtab_section
->data
+ sym
->st_name
);
1509 func_addr
= sym
->st_value
;
1515 /* did not find any info: */
1516 fprintf(stderr
, " ???\n");
1519 if (last_func_name
[0] != '\0') {
1520 fprintf(stderr
, " %s()", last_func_name
);
1522 if (incl_index
> 0) {
1523 fprintf(stderr
, " (%s:%d",
1524 incl_files
[incl_index
- 1], last_line_num
);
1525 for(i
= incl_index
- 2; i
>= 0; i
--)
1526 fprintf(stderr
, ", included from %s", incl_files
[i
]);
1527 fprintf(stderr
, ")");
1529 fprintf(stderr
, "\n");
1534 /* fix for glibc 2.1 */
1540 /* return the PC at frame level 'level'. Return non zero if not found */
1541 static int rt_get_caller_pc(unsigned long *paddr
,
1542 ucontext_t
*uc
, int level
)
1548 #if defined(__FreeBSD__)
1549 *paddr
= uc
->uc_mcontext
.mc_eip
;
1550 #elif defined(__dietlibc__)
1551 *paddr
= uc
->uc_mcontext
.eip
;
1553 *paddr
= uc
->uc_mcontext
.gregs
[REG_EIP
];
1557 #if defined(__FreeBSD__)
1558 fp
= uc
->uc_mcontext
.mc_ebp
;
1559 #elif defined(__dietlibc__)
1560 fp
= uc
->uc_mcontext
.ebp
;
1562 fp
= uc
->uc_mcontext
.gregs
[REG_EBP
];
1564 for(i
=1;i
<level
;i
++) {
1565 /* XXX: check address validity with program info */
1566 if (fp
<= 0x1000 || fp
>= 0xc0000000)
1568 fp
= ((unsigned long *)fp
)[0];
1570 *paddr
= ((unsigned long *)fp
)[1];
1574 #elif defined(__x86_64__)
1575 /* return the PC at frame level 'level'. Return non zero if not found */
1576 static int rt_get_caller_pc(unsigned long *paddr
,
1577 ucontext_t
*uc
, int level
)
1583 /* XXX: only support linux */
1584 #if defined(__FreeBSD__)
1585 *paddr
= uc
->uc_mcontext
.mc_rip
;
1587 *paddr
= uc
->uc_mcontext
.gregs
[REG_RIP
];
1591 #if defined(__FreeBSD__)
1592 fp
= uc
->uc_mcontext
.mc_rbp
;
1594 fp
= uc
->uc_mcontext
.gregs
[REG_RBP
];
1596 for(i
=1;i
<level
;i
++) {
1597 /* XXX: check address validity with program info */
1600 fp
= ((unsigned long *)fp
)[0];
1602 *paddr
= ((unsigned long *)fp
)[1];
1607 #warning add arch specific rt_get_caller_pc()
1608 static int rt_get_caller_pc(unsigned long *paddr
,
1609 ucontext_t
*uc
, int level
)
1615 /* emit a run time error at position 'pc' */
1616 void rt_error(ucontext_t
*uc
, const char *fmt
, ...)
1623 fprintf(stderr
, "Runtime error: ");
1624 vfprintf(stderr
, fmt
, ap
);
1625 fprintf(stderr
, "\n");
1626 for(i
=0;i
<num_callers
;i
++) {
1627 if (rt_get_caller_pc(&pc
, uc
, i
) < 0)
1630 fprintf(stderr
, "at ");
1632 fprintf(stderr
, "by ");
1633 pc
= rt_printline(pc
);
1634 if (pc
== rt_prog_main
&& pc
)
1641 /* signal handler for fatal errors */
1642 static void sig_error(int signum
, siginfo_t
*siginf
, void *puc
)
1644 ucontext_t
*uc
= puc
;
1648 switch(siginf
->si_code
) {
1651 rt_error(uc
, "division by zero");
1654 rt_error(uc
, "floating point exception");
1660 if (rt_bound_error_msg
&& *rt_bound_error_msg
)
1661 rt_error(uc
, *rt_bound_error_msg
);
1663 rt_error(uc
, "dereferencing invalid pointer");
1666 rt_error(uc
, "illegal instruction");
1669 rt_error(uc
, "abort() called");
1672 rt_error(uc
, "caught signal %d", signum
);
1680 /* copy code into memory passed in by the caller and do all relocations
1681 (needed before using tcc_get_symbol()).
1682 returns -1 on error and required size if ptr is NULL */
1683 int tcc_relocate(TCCState
*s1
, void *ptr
)
1686 unsigned long offset
, length
;
1690 if (0 == s1
->runtime_added
) {
1691 s1
->runtime_added
= 1;
1693 #ifdef TCC_TARGET_PE
1694 pe_output_file(s1
, NULL
);
1696 tcc_add_runtime(s1
);
1697 relocate_common_syms();
1698 tcc_add_linker_symbols(s1
);
1699 build_got_entries(s1
);
1705 offset
= 0, mem
= (uplong
)ptr
;
1706 for(i
= 1; i
< s1
->nb_sections
; i
++) {
1707 s
= s1
->sections
[i
];
1708 if (0 == (s
->sh_flags
& SHF_ALLOC
))
1710 length
= s
->data_offset
;
1711 s
->sh_addr
= mem
? (mem
+ offset
+ 15) & ~15 : 0;
1712 offset
= (offset
+ length
+ 15) & ~15;
1715 /* relocate symbols */
1716 relocate_syms(s1
, 1);
1720 #ifndef TCC_TARGET_PE
1721 #ifdef TCC_TARGET_X86_64
1722 s1
->runtime_plt_and_got_offset
= 0;
1723 s1
->runtime_plt_and_got
= (char *)(mem
+ offset
);
1724 /* double the size of the buffer for got and plt entries
1725 XXX: calculate exact size for them? */
1733 /* relocate each section */
1734 for(i
= 1; i
< s1
->nb_sections
; i
++) {
1735 s
= s1
->sections
[i
];
1737 relocate_section(s1
, s
);
1740 for(i
= 1; i
< s1
->nb_sections
; i
++) {
1741 s
= s1
->sections
[i
];
1742 if (0 == (s
->sh_flags
& SHF_ALLOC
))
1744 length
= s
->data_offset
;
1745 // printf("%-12s %08x %04x\n", s->name, s->sh_addr, length);
1746 ptr
= (void*)(uplong
)s
->sh_addr
;
1747 if (NULL
== s
->data
|| s
->sh_type
== SHT_NOBITS
)
1748 memset(ptr
, 0, length
);
1750 memcpy(ptr
, s
->data
, length
);
1751 /* mark executable sections as executable in memory */
1752 if (s
->sh_flags
& SHF_EXECINSTR
)
1753 set_pages_executable(ptr
, length
);
1755 #ifndef TCC_TARGET_PE
1756 #ifdef TCC_TARGET_X86_64
1757 set_pages_executable(s1
->runtime_plt_and_got
,
1758 s1
->runtime_plt_and_got_offset
);
1764 /* launch the compiled program with the given arguments */
1765 int tcc_run(TCCState
*s1
, int argc
, char **argv
)
1767 int (*prog_main
)(int, char **);
1771 ret
= tcc_relocate(s1
, NULL
);
1774 ptr
= tcc_malloc(ret
);
1775 tcc_relocate(s1
, ptr
);
1777 prog_main
= tcc_get_symbol_err(s1
, "main");
1780 #ifdef CONFIG_TCC_BACKTRACE
1781 struct sigaction sigact
;
1782 /* install TCC signal handlers to print debug info on fatal
1784 sigact
.sa_flags
= SA_SIGINFO
| SA_RESETHAND
;
1785 sigact
.sa_sigaction
= sig_error
;
1786 sigemptyset(&sigact
.sa_mask
);
1787 sigaction(SIGFPE
, &sigact
, NULL
);
1788 sigaction(SIGILL
, &sigact
, NULL
);
1789 sigaction(SIGSEGV
, &sigact
, NULL
);
1790 sigaction(SIGBUS
, &sigact
, NULL
);
1791 sigaction(SIGABRT
, &sigact
, NULL
);
1793 error("debug mode not available");
1797 #ifdef CONFIG_TCC_BCHECK
1798 if (s1
->do_bounds_check
) {
1799 void (*bound_init
)(void);
1800 void (*bound_exit
)(void);
1801 /* set error function */
1802 rt_bound_error_msg
= tcc_get_symbol_err(s1
, "__bound_error_msg");
1803 rt_prog_main
= (unsigned long)prog_main
;
1804 /* XXX: use .init section so that it also work in binary ? */
1805 bound_init
= tcc_get_symbol_err(s1
, "__bound_init");
1806 bound_exit
= tcc_get_symbol_err(s1
, "__bound_exit");
1808 ret
= (*prog_main
)(argc
, argv
);
1812 ret
= (*prog_main
)(argc
, argv
);
1817 void tcc_memstats(void)
1820 printf("memory in use: %d\n", mem_cur_size
);
1824 static void tcc_cleanup(void)
1828 if (NULL
== tcc_state
)
1832 /* free -D defines */
1836 n
= tok_ident
- TOK_IDENT
;
1837 for(i
= 0; i
< n
; i
++)
1838 tcc_free(table_ident
[i
]);
1839 tcc_free(table_ident
);
1841 /* free sym_pools */
1842 dynarray_reset(&sym_pools
, &nb_sym_pools
);
1844 cstr_free(&tokcstr
);
1845 /* reset symbol stack */
1846 sym_free_first
= NULL
;
1847 /* cleanup from error/setjmp */
1851 TCCState
*tcc_new(void)
1859 s
= tcc_mallocz(sizeof(TCCState
));
1864 tcc_set_lib_path_w32(s
);
1866 tcc_set_lib_path(s
, CONFIG_TCCDIR
);
1868 s
->output_type
= TCC_OUTPUT_MEMORY
;
1871 /* we add dummy defines for some special macros to speed up tests
1872 and to have working defined() */
1873 define_push(TOK___LINE__
, MACRO_OBJ
, NULL
, NULL
);
1874 define_push(TOK___FILE__
, MACRO_OBJ
, NULL
, NULL
);
1875 define_push(TOK___DATE__
, MACRO_OBJ
, NULL
, NULL
);
1876 define_push(TOK___TIME__
, MACRO_OBJ
, NULL
, NULL
);
1878 /* standard defines */
1879 tcc_define_symbol(s
, "__STDC__", NULL
);
1880 tcc_define_symbol(s
, "__STDC_VERSION__", "199901L");
1881 #if defined(TCC_TARGET_I386)
1882 tcc_define_symbol(s
, "__i386__", "1");
1883 tcc_define_symbol(s
, "__i386", "1");
1884 tcc_define_symbol(s
, "i386", "1");
1886 #if defined(TCC_TARGET_X86_64)
1887 tcc_define_symbol(s
, "__x86_64__", NULL
);
1889 #if defined(TCC_TARGET_ARM)
1890 tcc_define_symbol(s
, "__ARM_ARCH_4__", NULL
);
1891 tcc_define_symbol(s
, "__arm_elf__", NULL
);
1892 tcc_define_symbol(s
, "__arm_elf", NULL
);
1893 tcc_define_symbol(s
, "arm_elf", NULL
);
1894 tcc_define_symbol(s
, "__arm__", NULL
);
1895 tcc_define_symbol(s
, "__arm", NULL
);
1896 tcc_define_symbol(s
, "arm", NULL
);
1897 tcc_define_symbol(s
, "__APCS_32__", NULL
);
1899 #ifdef TCC_TARGET_PE
1900 tcc_define_symbol(s
, "_WIN32", NULL
);
1901 #ifdef TCC_TARGET_X86_64
1902 tcc_define_symbol(s
, "_WIN64", NULL
);
1905 tcc_define_symbol(s
, "__unix__", "1");
1906 tcc_define_symbol(s
, "__unix", "1");
1907 tcc_define_symbol(s
, "unix", "1");
1908 #if defined(__FreeBSD__)
1910 tcc_define_symbol(s
, "__FreeBSD__", str( __FreeBSD__
));
1911 tcc_define_symbol(s
, "__INTEL_COMPILER", "1");
1914 #if defined(__linux)
1915 tcc_define_symbol(s
, "__linux__", NULL
);
1916 tcc_define_symbol(s
, "__linux", NULL
);
1919 /* tiny C specific defines */
1920 sscanf(TCC_VERSION
, "%d.%d.%d", &a
, &b
, &c
);
1921 sprintf(buffer
, "%d", a
*10000 + b
*100 + c
);
1922 tcc_define_symbol(s
, "__TINYC__", buffer
);
1924 /* tiny C & gcc defines */
1925 tcc_define_symbol(s
, "__SIZE_TYPE__", "unsigned long");
1926 tcc_define_symbol(s
, "__PTRDIFF_TYPE__", "long");
1927 #ifdef TCC_TARGET_PE
1928 tcc_define_symbol(s
, "__WCHAR_TYPE__", "unsigned short");
1930 tcc_define_symbol(s
, "__WCHAR_TYPE__", "int");
1933 #ifndef TCC_TARGET_PE
1934 /* default library paths */
1935 tcc_add_library_path(s
, CONFIG_SYSROOT
"/usr/local/lib");
1936 tcc_add_library_path(s
, CONFIG_SYSROOT
"/usr/lib");
1937 tcc_add_library_path(s
, CONFIG_SYSROOT
"/lib");
1940 /* no section zero */
1941 dynarray_add((void ***)&s
->sections
, &s
->nb_sections
, NULL
);
1943 /* create standard sections */
1944 text_section
= new_section(s
, ".text", SHT_PROGBITS
, SHF_ALLOC
| SHF_EXECINSTR
);
1945 data_section
= new_section(s
, ".data", SHT_PROGBITS
, SHF_ALLOC
| SHF_WRITE
);
1946 bss_section
= new_section(s
, ".bss", SHT_NOBITS
, SHF_ALLOC
| SHF_WRITE
);
1948 /* symbols are always generated for linking stage */
1949 symtab_section
= new_symtab(s
, ".symtab", SHT_SYMTAB
, 0,
1951 ".hashtab", SHF_PRIVATE
);
1952 strtab_section
= symtab_section
->link
;
1954 /* private symbol table for dynamic symbols */
1955 s
->dynsymtab_section
= new_symtab(s
, ".dynsymtab", SHT_SYMTAB
, SHF_PRIVATE
,
1957 ".dynhashtab", SHF_PRIVATE
);
1958 s
->alacarte_link
= 1;
1960 #ifdef CHAR_IS_UNSIGNED
1961 s
->char_is_unsigned
= 1;
1963 #if defined(TCC_TARGET_PE) && 0
1964 /* XXX: currently the PE linker is not ready to support that */
1965 s
->leading_underscore
= 1;
1968 if (s
->section_align
== 0)
1969 s
->section_align
= ELF_PAGE_SIZE
;
1971 #ifdef TCC_TARGET_I386
1977 void tcc_delete(TCCState
*s1
)
1983 /* free all sections */
1984 for(i
= 1; i
< s1
->nb_sections
; i
++)
1985 free_section(s1
->sections
[i
]);
1986 dynarray_reset(&s1
->sections
, &s1
->nb_sections
);
1988 for(i
= 0; i
< s1
->nb_priv_sections
; i
++)
1989 free_section(s1
->priv_sections
[i
]);
1990 dynarray_reset(&s1
->priv_sections
, &s1
->nb_priv_sections
);
1992 /* free any loaded DLLs */
1993 for ( i
= 0; i
< s1
->nb_loaded_dlls
; i
++) {
1994 DLLReference
*ref
= s1
->loaded_dlls
[i
];
1996 dlclose(ref
->handle
);
1999 /* free loaded dlls array */
2000 dynarray_reset(&s1
->loaded_dlls
, &s1
->nb_loaded_dlls
);
2002 /* free library paths */
2003 dynarray_reset(&s1
->library_paths
, &s1
->nb_library_paths
);
2005 /* free include paths */
2006 dynarray_reset(&s1
->cached_includes
, &s1
->nb_cached_includes
);
2007 dynarray_reset(&s1
->include_paths
, &s1
->nb_include_paths
);
2008 dynarray_reset(&s1
->sysinclude_paths
, &s1
->nb_sysinclude_paths
);
2010 tcc_free(s1
->tcc_lib_path
);
2014 int tcc_add_include_path(TCCState
*s1
, const char *pathname
)
2018 pathname1
= tcc_strdup(pathname
);
2019 dynarray_add((void ***)&s1
->include_paths
, &s1
->nb_include_paths
, pathname1
);
2023 int tcc_add_sysinclude_path(TCCState
*s1
, const char *pathname
)
2027 pathname1
= tcc_strdup(pathname
);
2028 dynarray_add((void ***)&s1
->sysinclude_paths
, &s1
->nb_sysinclude_paths
, pathname1
);
2032 static int tcc_add_file_internal(TCCState
*s1
, const char *filename
, int flags
)
2037 BufferedFile
*saved_file
;
2041 /* find source file type with extension */
2042 ext
= tcc_fileextension(filename
);
2048 file
= tcc_open(s1
, filename
);
2050 if (flags
& AFF_PRINT_ERROR
)
2051 error_noabort("file '%s' not found", filename
);
2055 if (flags
& AFF_PREPROCESS
) {
2056 ret
= tcc_preprocess(s1
);
2060 if (!ext
[0] || !PATHCMP(ext
, "c")) {
2061 /* C file assumed */
2062 ret
= tcc_compile(s1
);
2066 #ifdef CONFIG_TCC_ASM
2067 if (!strcmp(ext
, "S")) {
2068 /* preprocessed assembler */
2069 ret
= tcc_assemble(s1
, 1);
2073 if (!strcmp(ext
, "s")) {
2074 /* non preprocessed assembler */
2075 ret
= tcc_assemble(s1
, 0);
2081 /* assume executable format: auto guess file type */
2082 size
= read(fd
, &ehdr
, sizeof(ehdr
));
2083 lseek(fd
, 0, SEEK_SET
);
2085 error_noabort("could not read header");
2089 if (size
== sizeof(ehdr
) &&
2090 ehdr
.e_ident
[0] == ELFMAG0
&&
2091 ehdr
.e_ident
[1] == ELFMAG1
&&
2092 ehdr
.e_ident
[2] == ELFMAG2
&&
2093 ehdr
.e_ident
[3] == ELFMAG3
) {
2095 /* do not display line number if error */
2097 if (ehdr
.e_type
== ET_REL
) {
2098 ret
= tcc_load_object_file(s1
, fd
, 0);
2102 #ifndef TCC_TARGET_PE
2103 if (ehdr
.e_type
== ET_DYN
) {
2104 if (s1
->output_type
== TCC_OUTPUT_MEMORY
) {
2106 h
= dlopen(filename
, RTLD_GLOBAL
| RTLD_LAZY
);
2110 ret
= tcc_load_dll(s1
, fd
, filename
,
2111 (flags
& AFF_REFERENCED_DLL
) != 0);
2116 error_noabort("unrecognized ELF file");
2120 if (memcmp((char *)&ehdr
, ARMAG
, 8) == 0) {
2121 file
->line_num
= 0; /* do not display line number if error */
2122 ret
= tcc_load_archive(s1
, fd
);
2126 #ifdef TCC_TARGET_COFF
2127 if (*(uint16_t *)(&ehdr
) == COFF_C67_MAGIC
) {
2128 ret
= tcc_load_coff(s1
, fd
);
2133 #ifdef TCC_TARGET_PE
2134 ret
= pe_load_file(s1
, filename
, fd
);
2136 /* as GNU ld, consider it is an ld script if not recognized */
2137 ret
= tcc_load_ldscript(s1
);
2140 error_noabort("unrecognized file type");
2149 int tcc_add_file(TCCState
*s
, const char *filename
)
2151 if (s
->output_type
== TCC_OUTPUT_PREPROCESS
)
2152 return tcc_add_file_internal(s
, filename
, AFF_PRINT_ERROR
| AFF_PREPROCESS
);
2154 return tcc_add_file_internal(s
, filename
, AFF_PRINT_ERROR
);
2157 int tcc_add_library_path(TCCState
*s
, const char *pathname
)
2161 pathname1
= tcc_strdup(pathname
);
2162 dynarray_add((void ***)&s
->library_paths
, &s
->nb_library_paths
, pathname1
);
2166 /* find and load a dll. Return non zero if not found */
2167 /* XXX: add '-rpath' option support ? */
2168 static int tcc_add_dll(TCCState
*s
, const char *filename
, int flags
)
2173 for(i
= 0; i
< s
->nb_library_paths
; i
++) {
2174 snprintf(buf
, sizeof(buf
), "%s/%s",
2175 s
->library_paths
[i
], filename
);
2176 if (tcc_add_file_internal(s
, buf
, flags
) == 0)
2182 /* the library name is the same as the argument of the '-l' option */
2183 int tcc_add_library(TCCState
*s
, const char *libraryname
)
2188 /* first we look for the dynamic library if not static linking */
2189 if (!s
->static_link
) {
2190 #ifdef TCC_TARGET_PE
2191 if (pe_add_dll(s
, libraryname
) == 0)
2194 snprintf(buf
, sizeof(buf
), "lib%s.so", libraryname
);
2195 if (tcc_add_dll(s
, buf
, 0) == 0)
2199 /* then we look for the static library */
2200 for(i
= 0; i
< s
->nb_library_paths
; i
++) {
2201 snprintf(buf
, sizeof(buf
), "%s/lib%s.a",
2202 s
->library_paths
[i
], libraryname
);
2203 if (tcc_add_file_internal(s
, buf
, 0) == 0)
2209 int tcc_add_symbol(TCCState
*s
, const char *name
, void *val
)
2211 add_elf_sym(symtab_section
, (uplong
)val
, 0,
2212 ELFW(ST_INFO
)(STB_GLOBAL
, STT_NOTYPE
), 0,
2217 int tcc_set_output_type(TCCState
*s
, int output_type
)
2221 s
->output_type
= output_type
;
2224 /* default include paths */
2225 /* XXX: reverse order needed if -isystem support */
2226 #ifndef TCC_TARGET_PE
2227 tcc_add_sysinclude_path(s
, CONFIG_SYSROOT
"/usr/local/include");
2228 tcc_add_sysinclude_path(s
, CONFIG_SYSROOT
"/usr/include");
2230 snprintf(buf
, sizeof(buf
), "%s/include", s
->tcc_lib_path
);
2231 tcc_add_sysinclude_path(s
, buf
);
2232 #ifdef TCC_TARGET_PE
2233 snprintf(buf
, sizeof(buf
), "%s/include/winapi", s
->tcc_lib_path
);
2234 tcc_add_sysinclude_path(s
, buf
);
2238 /* if bound checking, then add corresponding sections */
2239 #ifdef CONFIG_TCC_BCHECK
2240 if (s
->do_bounds_check
) {
2242 tcc_define_symbol(s
, "__BOUNDS_CHECKING_ON", NULL
);
2243 /* create bounds sections */
2244 bounds_section
= new_section(s
, ".bounds",
2245 SHT_PROGBITS
, SHF_ALLOC
);
2246 lbounds_section
= new_section(s
, ".lbounds",
2247 SHT_PROGBITS
, SHF_ALLOC
);
2251 if (s
->char_is_unsigned
) {
2252 tcc_define_symbol(s
, "__CHAR_UNSIGNED__", NULL
);
2255 /* add debug sections */
2258 stab_section
= new_section(s
, ".stab", SHT_PROGBITS
, 0);
2259 stab_section
->sh_entsize
= sizeof(Stab_Sym
);
2260 stabstr_section
= new_section(s
, ".stabstr", SHT_STRTAB
, 0);
2261 put_elf_str(stabstr_section
, "");
2262 stab_section
->link
= stabstr_section
;
2263 /* put first entry */
2264 put_stabs("", 0, 0, 0, 0);
2267 /* add libc crt1/crti objects */
2268 #ifndef TCC_TARGET_PE
2269 if ((output_type
== TCC_OUTPUT_EXE
|| output_type
== TCC_OUTPUT_DLL
) &&
2271 if (output_type
!= TCC_OUTPUT_DLL
)
2272 tcc_add_file(s
, CONFIG_TCC_CRT_PREFIX
"/crt1.o");
2273 tcc_add_file(s
, CONFIG_TCC_CRT_PREFIX
"/crti.o");
2277 #ifdef TCC_TARGET_PE
2278 snprintf(buf
, sizeof(buf
), "%s/lib", s
->tcc_lib_path
);
2279 tcc_add_library_path(s
, buf
);
2281 if (GetSystemDirectory(buf
, sizeof buf
))
2282 tcc_add_library_path(s
, buf
);
2289 #define WD_ALL 0x0001 /* warning is activated when using -Wall */
2290 #define FD_INVERT 0x0002 /* invert value before storing */
2292 typedef struct FlagDef
{
2298 static const FlagDef warning_defs
[] = {
2299 { offsetof(TCCState
, warn_unsupported
), 0, "unsupported" },
2300 { offsetof(TCCState
, warn_write_strings
), 0, "write-strings" },
2301 { offsetof(TCCState
, warn_error
), 0, "error" },
2302 { offsetof(TCCState
, warn_implicit_function_declaration
), WD_ALL
,
2303 "implicit-function-declaration" },
2306 static int set_flag(TCCState
*s
, const FlagDef
*flags
, int nb_flags
,
2307 const char *name
, int value
)
2314 if (r
[0] == 'n' && r
[1] == 'o' && r
[2] == '-') {
2318 for(i
= 0, p
= flags
; i
< nb_flags
; i
++, p
++) {
2319 if (!strcmp(r
, p
->name
))
2324 if (p
->flags
& FD_INVERT
)
2326 *(int *)((uint8_t *)s
+ p
->offset
) = value
;
2331 /* set/reset a warning */
2332 int tcc_set_warning(TCCState
*s
, const char *warning_name
, int value
)
2337 if (!strcmp(warning_name
, "all")) {
2338 for(i
= 0, p
= warning_defs
; i
< countof(warning_defs
); i
++, p
++) {
2339 if (p
->flags
& WD_ALL
)
2340 *(int *)((uint8_t *)s
+ p
->offset
) = 1;
2344 return set_flag(s
, warning_defs
, countof(warning_defs
),
2345 warning_name
, value
);
2349 static const FlagDef flag_defs
[] = {
2350 { offsetof(TCCState
, char_is_unsigned
), 0, "unsigned-char" },
2351 { offsetof(TCCState
, char_is_unsigned
), FD_INVERT
, "signed-char" },
2352 { offsetof(TCCState
, nocommon
), FD_INVERT
, "common" },
2353 { offsetof(TCCState
, leading_underscore
), 0, "leading-underscore" },
2356 /* set/reset a flag */
2357 int tcc_set_flag(TCCState
*s
, const char *flag_name
, int value
)
2359 return set_flag(s
, flag_defs
, countof(flag_defs
),
2363 /* set CONFIG_TCCDIR at runtime */
2364 void tcc_set_lib_path(TCCState
*s
, const char *path
)
2366 tcc_free(s
->tcc_lib_path
);
2367 s
->tcc_lib_path
= tcc_strdup(path
);
2370 void tcc_print_stats(TCCState
*s
, int64_t total_time
)
2373 tt
= (double)total_time
/ 1000000.0;
2376 if (total_bytes
< 1)
2378 printf("%d idents, %d lines, %d bytes, %0.3f s, %d lines/s, %0.1f MB/s\n",
2379 tok_ident
- TOK_IDENT
, total_lines
, total_bytes
,
2380 tt
, (int)(total_lines
/ tt
),
2381 total_bytes
/ tt
/ 1000000.0);