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
, unsigned long 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 void *resolve_sym(TCCState
*s1
, const char *sym
, int type
);
216 int pe_load_def_file(struct TCCState
*s1
, int fd
);
217 int pe_test_res_file(void *v
, int size
);
218 int pe_load_res_file(struct TCCState
*s1
, int fd
);
219 void pe_add_runtime(struct TCCState
*s1
);
220 void pe_guess_outfile(char *objfilename
, int output_type
);
221 int pe_output_file(struct TCCState
*s1
, const char *filename
);
224 #ifdef CONFIG_TCC_ASM
225 static void asm_expr(TCCState
*s1
, ExprValue
*pe
);
226 static int asm_int_expr(TCCState
*s1
);
227 static int find_constraint(ASMOperand
*operands
, int nb_operands
,
228 const char *name
, const char **pp
);
230 static int tcc_assemble(TCCState
*s1
, int do_preprocess
);
233 static void asm_instr(void);
234 static void asm_global_instr(void);
236 /********************************************************/
239 static Sym
*__sym_malloc(void);
240 static inline Sym
*sym_malloc(void);
241 static inline void sym_free(Sym
*sym
);
242 Section
*new_section(TCCState
*s1
, const char *name
, int sh_type
, int sh_flags
);
243 static void free_section(Section
*s
);
244 static void section_realloc(Section
*sec
, unsigned long new_size
);
245 static void *section_ptr_add(Section
*sec
, unsigned long size
);
246 Section
*find_section(TCCState
*s1
, const char *name
);
247 static void put_extern_sym2(
248 Sym
*sym
, Section
*section
,
249 unsigned long value
, unsigned long size
, int can_add_underscore
);
250 static void put_extern_sym(
251 Sym
*sym
, Section
*section
,
252 unsigned long value
, unsigned long size
);
253 static void greloc(Section
*s
, Sym
*sym
, unsigned long offset
, int type
);
255 static void strcat_vprintf(char *buf
, int buf_size
, const char *fmt
, va_list ap
);
256 static void strcat_printf(char *buf
, int buf_size
, const char *fmt
, ...);
258 /* CString handling */
259 static void cstr_realloc(CString
*cstr
, int new_size
);
260 static inline void cstr_ccat(CString
*cstr
, int ch
);
261 static void cstr_cat(CString
*cstr
, const char *str
);
262 static void cstr_wccat(CString
*cstr
, int ch
);
263 static void cstr_new(CString
*cstr
);
264 static void cstr_free(CString
*cstr
);
265 #define cstr_reset(cstr) cstr_free(cstr)
266 static void add_char(CString
*cstr
, int c
);
268 static Sym
*sym_push2(Sym
**ps
, int v
, int t
, long c
);
269 static Sym
*sym_find2(Sym
*s
, int v
);
270 static inline Sym
*struct_find(int v
);
271 static inline Sym
*sym_find(int v
);
272 static Sym
*sym_push(int v
, CType
*type
, int r
, int c
);
273 static Sym
*global_identifier_push(int v
, int t
, int c
);
274 static void sym_pop(Sym
**ptop
, Sym
*b
);
276 BufferedFile
*tcc_open(TCCState
*s1
, const char *filename
);
277 void tcc_close(BufferedFile
*bf
);
278 static int tcc_compile(TCCState
*s1
);
280 void expect(const char *msg
);
282 static void test_lvalue(void);
284 static inline int isid(int c
)
286 return (c
>= 'a' && c
<= 'z')
287 || (c
>= 'A' && c
<= 'Z')
291 static inline int isnum(int c
)
293 return c
>= '0' && c
<= '9';
296 static inline int isoct(int c
)
298 return c
>= '0' && c
<= '7';
301 static inline int toup(int c
)
303 if (c
>= 'a' && c
<= 'z')
304 return c
- 'a' + 'A';
309 void *resolve_sym(TCCState
*s1
, const char *sym
, int type
);
311 /********************************************************/
313 #ifdef TCC_TARGET_I386
314 #include "i386-gen.c"
317 #ifdef TCC_TARGET_ARM
321 #ifdef TCC_TARGET_C67
325 #ifdef TCC_TARGET_X86_64
326 #include "x86_64-gen.c"
332 #ifdef CONFIG_TCC_ASM
333 #ifdef TCC_TARGET_I386
334 #include "i386-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 /********************************************************/
359 #ifdef CONFIG_TCC_STATIC
361 #define RTLD_LAZY 0x001
362 #define RTLD_NOW 0x002
363 #define RTLD_GLOBAL 0x100
364 #define RTLD_DEFAULT NULL
366 /* dummy function for profiling */
367 void *dlopen(const char *filename
, int flag
)
372 void dlclose(void *p
)
376 const char *dlerror(void)
381 typedef struct TCCSyms
{
386 #define TCCSYM(a) { #a, &a, },
388 /* add the symbol you want here if no dynamic linking is done */
389 static TCCSyms tcc_syms
[] = {
390 #if !defined(CONFIG_TCCBOOT)
399 void *resolve_sym(TCCState
*s1
, const char *symbol
, int type
)
403 while (p
->str
!= NULL
) {
404 if (!strcmp(p
->str
, symbol
))
411 #elif !defined(_WIN32)
415 void *resolve_sym(TCCState
*s1
, const char *sym
, int type
)
417 return dlsym(RTLD_DEFAULT
, sym
);
422 /********************************************************/
424 /* we use our own 'finite' function to avoid potential problems with
425 non standard math libs */
426 /* XXX: endianness dependent */
427 int ieee_finite(double d
)
430 return ((unsigned)((p
[1] | 0x800fffff) + 1)) >> 31;
433 /* copy a string and truncate it. */
434 char *pstrcpy(char *buf
, int buf_size
, const char *s
)
441 q_end
= buf
+ buf_size
- 1;
453 /* strcat and truncate. */
454 char *pstrcat(char *buf
, int buf_size
, const char *s
)
459 pstrcpy(buf
+ len
, buf_size
- len
, s
);
463 /* extract the basename of a file */
464 char *tcc_basename(const char *name
)
466 char *p
= strchr(name
, 0);
467 while (p
> name
&& !IS_PATHSEP(p
[-1]))
472 char *tcc_fileextension (const char *name
)
474 char *b
= tcc_basename(name
);
475 char *e
= strrchr(b
, '.');
476 return e
? e
: strchr(b
, 0);
480 char *normalize_slashes(char *path
)
483 for (p
= path
; *p
; ++p
)
489 void tcc_set_lib_path_w32(TCCState
*s
)
491 /* on win32, we suppose the lib and includes are at the location
494 GetModuleFileNameA(NULL
, path
, sizeof path
);
495 p
= tcc_basename(normalize_slashes(strlwr(path
)));
496 if (p
- 5 > path
&& 0 == strncmp(p
- 5, "/bin/", 5))
501 tcc_set_lib_path(s
, path
);
505 void set_pages_executable(void *ptr
, unsigned long length
)
508 unsigned long old_protect
;
509 VirtualProtect(ptr
, length
, PAGE_EXECUTE_READWRITE
, &old_protect
);
511 unsigned long start
, end
;
512 start
= (unsigned long)ptr
& ~(PAGESIZE
- 1);
513 end
= (unsigned long)ptr
+ length
;
514 end
= (end
+ PAGESIZE
- 1) & ~(PAGESIZE
- 1);
515 mprotect((void *)start
, end
- start
, PROT_READ
| PROT_WRITE
| PROT_EXEC
);
519 /* memory management */
523 unsigned malloc_usable_size(void*);
526 void tcc_free(void *ptr
)
529 mem_cur_size
-= malloc_usable_size(ptr
);
534 void *tcc_malloc(unsigned long size
)
539 error("memory full");
541 mem_cur_size
+= malloc_usable_size(ptr
);
542 if (mem_cur_size
> mem_max_size
)
543 mem_max_size
= mem_cur_size
;
548 void *tcc_mallocz(unsigned long size
)
551 ptr
= tcc_malloc(size
);
552 memset(ptr
, 0, size
);
556 void *tcc_realloc(void *ptr
, unsigned long size
)
560 mem_cur_size
-= malloc_usable_size(ptr
);
562 ptr1
= realloc(ptr
, size
);
564 /* NOTE: count not correct if alloc error, but not critical */
565 mem_cur_size
+= malloc_usable_size(ptr1
);
566 if (mem_cur_size
> mem_max_size
)
567 mem_max_size
= mem_cur_size
;
572 char *tcc_strdup(const char *str
)
575 ptr
= tcc_malloc(strlen(str
) + 1);
580 #define free(p) use_tcc_free(p)
581 #define malloc(s) use_tcc_malloc(s)
582 #define realloc(p, s) use_tcc_realloc(p, s)
584 void dynarray_add(void ***ptab
, int *nb_ptr
, void *data
)
591 /* every power of two we double array size */
592 if ((nb
& (nb
- 1)) == 0) {
597 pp
= tcc_realloc(pp
, nb_alloc
* sizeof(void *));
599 error("memory full");
606 void dynarray_reset(void *pp
, int *n
)
609 for (p
= *(void***)pp
; *n
; ++p
, --*n
)
612 tcc_free(*(void**)pp
);
616 /* symbol allocator */
617 static Sym
*__sym_malloc(void)
619 Sym
*sym_pool
, *sym
, *last_sym
;
622 sym_pool
= tcc_malloc(SYM_POOL_NB
* sizeof(Sym
));
623 dynarray_add(&sym_pools
, &nb_sym_pools
, sym_pool
);
625 last_sym
= sym_free_first
;
627 for(i
= 0; i
< SYM_POOL_NB
; i
++) {
628 sym
->next
= last_sym
;
632 sym_free_first
= last_sym
;
636 static inline Sym
*sym_malloc(void)
639 sym
= sym_free_first
;
641 sym
= __sym_malloc();
642 sym_free_first
= sym
->next
;
646 static inline void sym_free(Sym
*sym
)
648 sym
->next
= sym_free_first
;
649 sym_free_first
= sym
;
652 Section
*new_section(TCCState
*s1
, const char *name
, int sh_type
, int sh_flags
)
656 sec
= tcc_mallocz(sizeof(Section
) + strlen(name
));
657 strcpy(sec
->name
, name
);
658 sec
->sh_type
= sh_type
;
659 sec
->sh_flags
= sh_flags
;
667 sec
->sh_addralign
= 4;
670 sec
->sh_addralign
= 1;
673 sec
->sh_addralign
= 32; /* default conservative alignment */
677 if (sh_flags
& SHF_PRIVATE
) {
678 dynarray_add((void ***)&s1
->priv_sections
, &s1
->nb_priv_sections
, sec
);
680 sec
->sh_num
= s1
->nb_sections
;
681 dynarray_add((void ***)&s1
->sections
, &s1
->nb_sections
, sec
);
687 static void free_section(Section
*s
)
692 /* realloc section and set its content to zero */
693 static void section_realloc(Section
*sec
, unsigned long new_size
)
698 size
= sec
->data_allocated
;
701 while (size
< new_size
)
703 data
= tcc_realloc(sec
->data
, size
);
705 error("memory full");
706 memset(data
+ sec
->data_allocated
, 0, size
- sec
->data_allocated
);
708 sec
->data_allocated
= size
;
711 /* reserve at least 'size' bytes in section 'sec' from
713 static void *section_ptr_add(Section
*sec
, unsigned long size
)
715 unsigned long offset
, offset1
;
717 offset
= sec
->data_offset
;
718 offset1
= offset
+ size
;
719 if (offset1
> sec
->data_allocated
)
720 section_realloc(sec
, offset1
);
721 sec
->data_offset
= offset1
;
722 return sec
->data
+ offset
;
725 /* return a reference to a section, and create it if it does not
727 Section
*find_section(TCCState
*s1
, const char *name
)
731 for(i
= 1; i
< s1
->nb_sections
; i
++) {
732 sec
= s1
->sections
[i
];
733 if (!strcmp(name
, sec
->name
))
736 /* sections are created as PROGBITS */
737 return new_section(s1
, name
, SHT_PROGBITS
, SHF_ALLOC
);
740 /* update sym->c so that it points to an external symbol in section
741 'section' with value 'value' */
742 static void put_extern_sym2(Sym
*sym
, Section
*section
,
743 unsigned long value
, unsigned long size
,
744 int can_add_underscore
)
746 int sym_type
, sym_bind
, sh_num
, info
, other
, attr
;
753 else if (section
== SECTION_ABS
)
756 sh_num
= section
->sh_num
;
760 if ((sym
->type
.t
& VT_BTYPE
) == VT_FUNC
) {
764 attr
= sym
->type
.ref
->r
;
765 if (FUNC_EXPORT(attr
))
767 if (FUNC_CALL(attr
) == FUNC_STDCALL
)
771 sym_type
= STT_OBJECT
;
774 if (sym
->type
.t
& VT_STATIC
)
775 sym_bind
= STB_LOCAL
;
777 sym_bind
= STB_GLOBAL
;
780 name
= get_tok_str(sym
->v
, NULL
);
781 #ifdef CONFIG_TCC_BCHECK
782 if (tcc_state
->do_bounds_check
) {
785 /* XXX: avoid doing that for statics ? */
786 /* if bound checking is activated, we change some function
787 names by adding the "__bound" prefix */
790 /* XXX: we rely only on malloc hooks */
803 strcpy(buf
, "__bound_");
812 if ((other
& 2) && can_add_underscore
) {
813 sprintf(buf1
, "_%s@%d", name
, FUNC_ARGS(attr
));
817 if (tcc_state
->leading_underscore
&& can_add_underscore
) {
819 pstrcpy(buf1
+ 1, sizeof(buf1
) - 1, name
);
822 info
= ELFW(ST_INFO
)(sym_bind
, sym_type
);
823 sym
->c
= add_elf_sym(symtab_section
, value
, size
, info
, other
, sh_num
, name
);
825 esym
= &((ElfW(Sym
) *)symtab_section
->data
)[sym
->c
];
826 esym
->st_value
= value
;
827 esym
->st_size
= size
;
828 esym
->st_shndx
= sh_num
;
829 esym
->st_other
|= other
;
833 static void put_extern_sym(Sym
*sym
, Section
*section
,
834 unsigned long value
, unsigned long size
)
836 put_extern_sym2(sym
, section
, value
, size
, 1);
839 /* add a new relocation entry to symbol 'sym' in section 's' */
840 static void greloc(Section
*s
, Sym
*sym
, unsigned long offset
, int type
)
843 put_extern_sym(sym
, NULL
, 0, 0);
844 /* now we can add ELF relocation info */
845 put_elf_reloc(symtab_section
, s
, offset
, type
, sym
->c
);
848 static void strcat_vprintf(char *buf
, int buf_size
, const char *fmt
, va_list ap
)
852 vsnprintf(buf
+ len
, buf_size
- len
, fmt
, ap
);
855 static void strcat_printf(char *buf
, int buf_size
, const char *fmt
, ...)
859 strcat_vprintf(buf
, buf_size
, fmt
, ap
);
863 void error1(TCCState
*s1
, int is_warning
, const char *fmt
, va_list ap
)
870 for(f
= s1
->include_stack
; f
< s1
->include_stack_ptr
; f
++)
871 strcat_printf(buf
, sizeof(buf
), "In file included from %s:%d:\n",
872 (*f
)->filename
, (*f
)->line_num
);
873 if (file
->line_num
> 0) {
874 strcat_printf(buf
, sizeof(buf
),
875 "%s:%d: ", file
->filename
, file
->line_num
);
877 strcat_printf(buf
, sizeof(buf
),
878 "%s: ", file
->filename
);
881 strcat_printf(buf
, sizeof(buf
),
885 strcat_printf(buf
, sizeof(buf
), "warning: ");
887 strcat_printf(buf
, sizeof(buf
), "error: ");
888 strcat_vprintf(buf
, sizeof(buf
), fmt
, ap
);
890 if (!s1
->error_func
) {
891 /* default case: stderr */
892 fprintf(stderr
, "%s\n", buf
);
894 s1
->error_func(s1
->error_opaque
, buf
);
896 if (!is_warning
|| s1
->warn_error
)
900 void tcc_set_error_func(TCCState
*s
, void *error_opaque
,
901 void (*error_func
)(void *opaque
, const char *msg
))
903 s
->error_opaque
= error_opaque
;
904 s
->error_func
= error_func
;
907 /* error without aborting current compilation */
908 void error_noabort(const char *fmt
, ...)
910 TCCState
*s1
= tcc_state
;
914 error1(s1
, 0, fmt
, ap
);
918 void error(const char *fmt
, ...)
920 TCCState
*s1
= tcc_state
;
924 error1(s1
, 0, fmt
, ap
);
926 /* better than nothing: in some cases, we accept to handle errors */
927 if (s1
->error_set_jmp_enabled
) {
928 longjmp(s1
->error_jmp_buf
, 1);
930 /* XXX: eliminate this someday */
935 void expect(const char *msg
)
937 error("%s expected", msg
);
940 void warning(const char *fmt
, ...)
942 TCCState
*s1
= tcc_state
;
949 error1(s1
, 1, fmt
, ap
);
956 error("'%c' expected", c
);
960 static void test_lvalue(void)
962 if (!(vtop
->r
& VT_LVAL
))
966 /* CString handling */
968 static void cstr_realloc(CString
*cstr
, int new_size
)
973 size
= cstr
->size_allocated
;
975 size
= 8; /* no need to allocate a too small first string */
976 while (size
< new_size
)
978 data
= tcc_realloc(cstr
->data_allocated
, size
);
980 error("memory full");
981 cstr
->data_allocated
= data
;
982 cstr
->size_allocated
= size
;
987 static inline void cstr_ccat(CString
*cstr
, int ch
)
990 size
= cstr
->size
+ 1;
991 if (size
> cstr
->size_allocated
)
992 cstr_realloc(cstr
, size
);
993 ((unsigned char *)cstr
->data
)[size
- 1] = ch
;
997 static void cstr_cat(CString
*cstr
, const char *str
)
1009 /* add a wide char */
1010 static void cstr_wccat(CString
*cstr
, int ch
)
1013 size
= cstr
->size
+ sizeof(nwchar_t
);
1014 if (size
> cstr
->size_allocated
)
1015 cstr_realloc(cstr
, size
);
1016 *(nwchar_t
*)(((unsigned char *)cstr
->data
) + size
- sizeof(nwchar_t
)) = ch
;
1020 static void cstr_new(CString
*cstr
)
1022 memset(cstr
, 0, sizeof(CString
));
1025 /* free string and reset it to NULL */
1026 static void cstr_free(CString
*cstr
)
1028 tcc_free(cstr
->data_allocated
);
1032 #define cstr_reset(cstr) cstr_free(cstr)
1034 /* XXX: unicode ? */
1035 static void add_char(CString
*cstr
, int c
)
1037 if (c
== '\'' || c
== '\"' || c
== '\\') {
1038 /* XXX: could be more precise if char or string */
1039 cstr_ccat(cstr
, '\\');
1041 if (c
>= 32 && c
<= 126) {
1044 cstr_ccat(cstr
, '\\');
1046 cstr_ccat(cstr
, 'n');
1048 cstr_ccat(cstr
, '0' + ((c
>> 6) & 7));
1049 cstr_ccat(cstr
, '0' + ((c
>> 3) & 7));
1050 cstr_ccat(cstr
, '0' + (c
& 7));
1055 /* push, without hashing */
1056 static Sym
*sym_push2(Sym
**ps
, int v
, int t
, long c
)
1073 /* find a symbol and return its associated structure. 's' is the top
1074 of the symbol stack */
1075 static Sym
*sym_find2(Sym
*s
, int v
)
1085 /* structure lookup */
1086 static inline Sym
*struct_find(int v
)
1089 if ((unsigned)v
>= (unsigned)(tok_ident
- TOK_IDENT
))
1091 return table_ident
[v
]->sym_struct
;
1094 /* find an identifier */
1095 static inline Sym
*sym_find(int v
)
1098 if ((unsigned)v
>= (unsigned)(tok_ident
- TOK_IDENT
))
1100 return table_ident
[v
]->sym_identifier
;
1103 /* push a given symbol on the symbol stack */
1104 static Sym
*sym_push(int v
, CType
*type
, int r
, int c
)
1113 s
= sym_push2(ps
, v
, type
->t
, c
);
1114 s
->type
.ref
= type
->ref
;
1116 /* don't record fields or anonymous symbols */
1118 if (!(v
& SYM_FIELD
) && (v
& ~SYM_STRUCT
) < SYM_FIRST_ANOM
) {
1119 /* record symbol in token array */
1120 ts
= table_ident
[(v
& ~SYM_STRUCT
) - TOK_IDENT
];
1122 ps
= &ts
->sym_struct
;
1124 ps
= &ts
->sym_identifier
;
1131 /* push a global identifier */
1132 static Sym
*global_identifier_push(int v
, int t
, int c
)
1135 s
= sym_push2(&global_stack
, v
, t
, c
);
1136 /* don't record anonymous symbol */
1137 if (v
< SYM_FIRST_ANOM
) {
1138 ps
= &table_ident
[v
- TOK_IDENT
]->sym_identifier
;
1139 /* modify the top most local identifier, so that
1140 sym_identifier will point to 's' when popped */
1142 ps
= &(*ps
)->prev_tok
;
1149 /* pop symbols until top reaches 'b' */
1150 static void sym_pop(Sym
**ptop
, Sym
*b
)
1160 /* remove symbol in token array */
1162 if (!(v
& SYM_FIELD
) && (v
& ~SYM_STRUCT
) < SYM_FIRST_ANOM
) {
1163 ts
= table_ident
[(v
& ~SYM_STRUCT
) - TOK_IDENT
];
1165 ps
= &ts
->sym_struct
;
1167 ps
= &ts
->sym_identifier
;
1178 BufferedFile
*tcc_open(TCCState
*s1
, const char *filename
)
1183 if (strcmp(filename
, "-") == 0)
1184 fd
= 0, filename
= "stdin";
1186 fd
= open(filename
, O_RDONLY
| O_BINARY
);
1187 if ((s1
->verbose
== 2 && fd
>= 0) || s1
->verbose
== 3)
1188 printf("%s %*s%s\n", fd
< 0 ? "nf":"->",
1189 (s1
->include_stack_ptr
- s1
->include_stack
), "", filename
);
1192 bf
= tcc_malloc(sizeof(BufferedFile
));
1194 bf
->buf_ptr
= bf
->buffer
;
1195 bf
->buf_end
= bf
->buffer
;
1196 bf
->buffer
[0] = CH_EOB
; /* put eob symbol */
1197 pstrcpy(bf
->filename
, sizeof(bf
->filename
), filename
);
1199 normalize_slashes(bf
->filename
);
1202 bf
->ifndef_macro
= 0;
1203 bf
->ifdef_stack_ptr
= s1
->ifdef_stack_ptr
;
1204 // printf("opening '%s'\n", filename);
1208 void tcc_close(BufferedFile
*bf
)
1210 total_lines
+= bf
->line_num
;
1215 /* compile the C file opened in 'file'. Return non zero if errors. */
1216 static int tcc_compile(TCCState
*s1
)
1220 volatile int section_sym
;
1223 printf("%s: **** new file\n", file
->filename
);
1225 preprocess_init(s1
);
1227 cur_text_section
= NULL
;
1229 anon_sym
= SYM_FIRST_ANOM
;
1231 /* file info: full path + filename */
1232 section_sym
= 0; /* avoid warning */
1234 section_sym
= put_elf_sym(symtab_section
, 0, 0,
1235 ELFW(ST_INFO
)(STB_LOCAL
, STT_SECTION
), 0,
1236 text_section
->sh_num
, NULL
);
1237 getcwd(buf
, sizeof(buf
));
1239 normalize_slashes(buf
);
1241 pstrcat(buf
, sizeof(buf
), "/");
1242 put_stabs_r(buf
, N_SO
, 0, 0,
1243 text_section
->data_offset
, text_section
, section_sym
);
1244 put_stabs_r(file
->filename
, N_SO
, 0, 0,
1245 text_section
->data_offset
, text_section
, section_sym
);
1247 /* an elf symbol of type STT_FILE must be put so that STB_LOCAL
1248 symbols can be safely used */
1249 put_elf_sym(symtab_section
, 0, 0,
1250 ELFW(ST_INFO
)(STB_LOCAL
, STT_FILE
), 0,
1251 SHN_ABS
, file
->filename
);
1253 /* define some often used types */
1254 int_type
.t
= VT_INT
;
1256 char_pointer_type
.t
= VT_BYTE
;
1257 mk_pointer(&char_pointer_type
);
1259 func_old_type
.t
= VT_FUNC
;
1260 func_old_type
.ref
= sym_push(SYM_FIELD
, &int_type
, FUNC_CDECL
, FUNC_OLD
);
1262 #if defined(TCC_ARM_EABI) && defined(TCC_ARM_VFP)
1263 float_type
.t
= VT_FLOAT
;
1264 double_type
.t
= VT_DOUBLE
;
1266 func_float_type
.t
= VT_FUNC
;
1267 func_float_type
.ref
= sym_push(SYM_FIELD
, &float_type
, FUNC_CDECL
, FUNC_OLD
);
1268 func_double_type
.t
= VT_FUNC
;
1269 func_double_type
.ref
= sym_push(SYM_FIELD
, &double_type
, FUNC_CDECL
, FUNC_OLD
);
1273 /* define 'void *alloca(unsigned int)' builtin function */
1278 sym
= sym_push(p
, mk_pointer(VT_VOID
), FUNC_CDECL
, FUNC_NEW
);
1279 s1
= sym_push(SYM_FIELD
, VT_UNSIGNED
| VT_INT
, 0, 0);
1282 sym_push(TOK_alloca
, VT_FUNC
| (p
<< VT_STRUCT_SHIFT
), VT_CONST
, 0);
1286 define_start
= define_stack
;
1289 if (setjmp(s1
->error_jmp_buf
) == 0) {
1291 s1
->error_set_jmp_enabled
= 1;
1293 ch
= file
->buf_ptr
[0];
1294 tok_flags
= TOK_FLAG_BOL
| TOK_FLAG_BOF
;
1295 parse_flags
= PARSE_FLAG_PREPROCESS
| PARSE_FLAG_TOK_NUM
;
1299 expect("declaration");
1301 /* end of translation unit info */
1303 put_stabs_r(NULL
, N_SO
, 0, 0,
1304 text_section
->data_offset
, text_section
, section_sym
);
1307 s1
->error_set_jmp_enabled
= 0;
1309 /* reset define stack, but leave -Dsymbols (may be incorrect if
1310 they are undefined) */
1311 free_defines(define_start
);
1313 gen_inline_functions();
1315 sym_pop(&global_stack
, NULL
);
1316 sym_pop(&local_stack
, NULL
);
1318 return s1
->nb_errors
!= 0 ? -1 : 0;
1321 int tcc_compile_string(TCCState
*s
, const char *str
)
1323 BufferedFile bf1
, *bf
= &bf1
;
1327 /* init file structure */
1329 /* XXX: avoid copying */
1331 buf
= tcc_malloc(len
+ 1);
1334 memcpy(buf
, str
, len
);
1337 bf
->buf_end
= buf
+ len
;
1338 pstrcpy(bf
->filename
, sizeof(bf
->filename
), "<string>");
1341 ret
= tcc_compile(s
);
1345 /* currently, no need to close */
1349 /* define a preprocessor symbol. A value can also be provided with the '=' operator */
1350 void tcc_define_symbol(TCCState
*s1
, const char *sym
, const char *value
)
1352 BufferedFile bf1
, *bf
= &bf1
;
1354 pstrcpy(bf
->buffer
, IO_BUF_SIZE
, sym
);
1355 pstrcat(bf
->buffer
, IO_BUF_SIZE
, " ");
1359 pstrcat(bf
->buffer
, IO_BUF_SIZE
, value
);
1361 /* init file structure */
1363 bf
->buf_ptr
= bf
->buffer
;
1364 bf
->buf_end
= bf
->buffer
+ strlen(bf
->buffer
);
1365 *bf
->buf_end
= CH_EOB
;
1366 bf
->filename
[0] = '\0';
1370 s1
->include_stack_ptr
= s1
->include_stack
;
1372 /* parse with define parser */
1373 ch
= file
->buf_ptr
[0];
1379 /* undefine a preprocessor symbol */
1380 void tcc_undefine_symbol(TCCState
*s1
, const char *sym
)
1384 ts
= tok_alloc(sym
, strlen(sym
));
1385 s
= define_find(ts
->tok
);
1386 /* undefine symbol by putting an invalid name */
1392 #ifdef CONFIG_TCC_BACKTRACE
1393 /* print the position in the source file of PC value 'pc' by reading
1394 the stabs debug information */
1395 static unsigned long rt_printline(unsigned long wanted_pc
)
1397 Stab_Sym
*sym
, *sym_end
;
1398 char func_name
[128], last_func_name
[128];
1399 unsigned long func_addr
, last_pc
, pc
;
1400 const char *incl_files
[INCLUDE_STACK_SIZE
];
1401 int incl_index
, len
, last_line_num
, i
;
1402 const char *str
, *p
;
1404 fprintf(stderr
, "0x%08lx:", wanted_pc
);
1406 func_name
[0] = '\0';
1409 last_func_name
[0] = '\0';
1410 last_pc
= 0xffffffff;
1412 sym
= (Stab_Sym
*)stab_section
->data
+ 1;
1413 sym_end
= (Stab_Sym
*)(stab_section
->data
+ stab_section
->data_offset
);
1414 while (sym
< sym_end
) {
1415 switch(sym
->n_type
) {
1416 /* function start or end */
1418 if (sym
->n_strx
== 0) {
1419 /* we test if between last line and end of function */
1420 pc
= sym
->n_value
+ func_addr
;
1421 if (wanted_pc
>= last_pc
&& wanted_pc
< pc
)
1423 func_name
[0] = '\0';
1426 str
= stabstr_section
->data
+ sym
->n_strx
;
1427 p
= strchr(str
, ':');
1429 pstrcpy(func_name
, sizeof(func_name
), str
);
1432 if (len
> sizeof(func_name
) - 1)
1433 len
= sizeof(func_name
) - 1;
1434 memcpy(func_name
, str
, len
);
1435 func_name
[len
] = '\0';
1437 func_addr
= sym
->n_value
;
1440 /* line number info */
1442 pc
= sym
->n_value
+ func_addr
;
1443 if (wanted_pc
>= last_pc
&& wanted_pc
< pc
)
1446 last_line_num
= sym
->n_desc
;
1448 strcpy(last_func_name
, func_name
);
1452 str
= stabstr_section
->data
+ sym
->n_strx
;
1454 if (incl_index
< INCLUDE_STACK_SIZE
) {
1455 incl_files
[incl_index
++] = str
;
1463 if (sym
->n_strx
== 0) {
1464 incl_index
= 0; /* end of translation unit */
1466 str
= stabstr_section
->data
+ sym
->n_strx
;
1467 /* do not add path */
1469 if (len
> 0 && str
[len
- 1] != '/')
1477 /* second pass: we try symtab symbols (no line number info) */
1480 ElfW(Sym
) *sym
, *sym_end
;
1483 sym_end
= (ElfW(Sym
) *)(symtab_section
->data
+ symtab_section
->data_offset
);
1484 for(sym
= (ElfW(Sym
) *)symtab_section
->data
+ 1;
1487 type
= ELFW(ST_TYPE
)(sym
->st_info
);
1488 if (type
== STT_FUNC
) {
1489 if (wanted_pc
>= sym
->st_value
&&
1490 wanted_pc
< sym
->st_value
+ sym
->st_size
) {
1491 pstrcpy(last_func_name
, sizeof(last_func_name
),
1492 strtab_section
->data
+ sym
->st_name
);
1493 func_addr
= sym
->st_value
;
1499 /* did not find any info: */
1500 fprintf(stderr
, " ???\n");
1503 if (last_func_name
[0] != '\0') {
1504 fprintf(stderr
, " %s()", last_func_name
);
1506 if (incl_index
> 0) {
1507 fprintf(stderr
, " (%s:%d",
1508 incl_files
[incl_index
- 1], last_line_num
);
1509 for(i
= incl_index
- 2; i
>= 0; i
--)
1510 fprintf(stderr
, ", included from %s", incl_files
[i
]);
1511 fprintf(stderr
, ")");
1513 fprintf(stderr
, "\n");
1518 /* fix for glibc 2.1 */
1524 /* return the PC at frame level 'level'. Return non zero if not found */
1525 static int rt_get_caller_pc(unsigned long *paddr
,
1526 ucontext_t
*uc
, int level
)
1532 #if defined(__FreeBSD__)
1533 *paddr
= uc
->uc_mcontext
.mc_eip
;
1534 #elif defined(__dietlibc__)
1535 *paddr
= uc
->uc_mcontext
.eip
;
1537 *paddr
= uc
->uc_mcontext
.gregs
[REG_EIP
];
1541 #if defined(__FreeBSD__)
1542 fp
= uc
->uc_mcontext
.mc_ebp
;
1543 #elif defined(__dietlibc__)
1544 fp
= uc
->uc_mcontext
.ebp
;
1546 fp
= uc
->uc_mcontext
.gregs
[REG_EBP
];
1548 for(i
=1;i
<level
;i
++) {
1549 /* XXX: check address validity with program info */
1550 if (fp
<= 0x1000 || fp
>= 0xc0000000)
1552 fp
= ((unsigned long *)fp
)[0];
1554 *paddr
= ((unsigned long *)fp
)[1];
1558 #elif defined(__x86_64__)
1559 /* return the PC at frame level 'level'. Return non zero if not found */
1560 static int rt_get_caller_pc(unsigned long *paddr
,
1561 ucontext_t
*uc
, int level
)
1567 /* XXX: only support linux */
1568 *paddr
= uc
->uc_mcontext
.gregs
[REG_RIP
];
1571 fp
= uc
->uc_mcontext
.gregs
[REG_RBP
];
1572 for(i
=1;i
<level
;i
++) {
1573 /* XXX: check address validity with program info */
1576 fp
= ((unsigned long *)fp
)[0];
1578 *paddr
= ((unsigned long *)fp
)[1];
1583 #warning add arch specific rt_get_caller_pc()
1584 static int rt_get_caller_pc(unsigned long *paddr
,
1585 ucontext_t
*uc
, int level
)
1591 /* emit a run time error at position 'pc' */
1592 void rt_error(ucontext_t
*uc
, const char *fmt
, ...)
1599 fprintf(stderr
, "Runtime error: ");
1600 vfprintf(stderr
, fmt
, ap
);
1601 fprintf(stderr
, "\n");
1602 for(i
=0;i
<num_callers
;i
++) {
1603 if (rt_get_caller_pc(&pc
, uc
, i
) < 0)
1606 fprintf(stderr
, "at ");
1608 fprintf(stderr
, "by ");
1609 pc
= rt_printline(pc
);
1610 if (pc
== rt_prog_main
&& pc
)
1617 /* signal handler for fatal errors */
1618 static void sig_error(int signum
, siginfo_t
*siginf
, void *puc
)
1620 ucontext_t
*uc
= puc
;
1624 switch(siginf
->si_code
) {
1627 rt_error(uc
, "division by zero");
1630 rt_error(uc
, "floating point exception");
1636 if (rt_bound_error_msg
&& *rt_bound_error_msg
)
1637 rt_error(uc
, *rt_bound_error_msg
);
1639 rt_error(uc
, "dereferencing invalid pointer");
1642 rt_error(uc
, "illegal instruction");
1645 rt_error(uc
, "abort() called");
1648 rt_error(uc
, "caught signal %d", signum
);
1656 /* copy code into memory passed in by the caller and do all relocations
1657 (needed before using tcc_get_symbol()).
1658 returns -1 on error and required size if ptr is NULL */
1659 int tcc_relocate(TCCState
*s1
, void *ptr
)
1662 unsigned long offset
, length
, mem
;
1665 if (0 == s1
->runtime_added
) {
1666 s1
->runtime_added
= 1;
1668 #ifdef TCC_TARGET_PE
1670 relocate_common_syms();
1671 tcc_add_linker_symbols(s1
);
1673 tcc_add_runtime(s1
);
1674 relocate_common_syms();
1675 tcc_add_linker_symbols(s1
);
1676 build_got_entries(s1
);
1680 offset
= 0, mem
= (unsigned long)ptr
;
1681 for(i
= 1; i
< s1
->nb_sections
; i
++) {
1682 s
= s1
->sections
[i
];
1683 if (0 == (s
->sh_flags
& SHF_ALLOC
))
1685 length
= s
->data_offset
;
1686 s
->sh_addr
= mem
? (mem
+ offset
+ 15) & ~15 : 0;
1687 offset
= (offset
+ length
+ 15) & ~15;
1690 /* relocate symbols */
1691 relocate_syms(s1
, 1);
1695 #ifdef TCC_TARGET_X86_64
1696 s1
->runtime_plt_and_got_offset
= 0;
1697 s1
->runtime_plt_and_got
= (char *)(mem
+ offset
);
1698 /* double the size of the buffer for got and plt entries
1699 XXX: calculate exact size for them? */
1706 /* relocate each section */
1707 for(i
= 1; i
< s1
->nb_sections
; i
++) {
1708 s
= s1
->sections
[i
];
1710 relocate_section(s1
, s
);
1713 for(i
= 1; i
< s1
->nb_sections
; i
++) {
1714 s
= s1
->sections
[i
];
1715 if (0 == (s
->sh_flags
& SHF_ALLOC
))
1717 length
= s
->data_offset
;
1718 // printf("%-12s %08x %04x\n", s->name, s->sh_addr, length);
1719 ptr
= (void*)s
->sh_addr
;
1720 if (NULL
== s
->data
|| s
->sh_type
== SHT_NOBITS
)
1721 memset(ptr
, 0, length
);
1723 memcpy(ptr
, s
->data
, length
);
1724 /* mark executable sections as executable in memory */
1725 if (s
->sh_flags
& SHF_EXECINSTR
)
1726 set_pages_executable(ptr
, length
);
1728 #ifdef TCC_TARGET_X86_64
1729 set_pages_executable(s1
->runtime_plt_and_got
,
1730 s1
->runtime_plt_and_got_offset
);
1735 /* launch the compiled program with the given arguments */
1736 int tcc_run(TCCState
*s1
, int argc
, char **argv
)
1738 int (*prog_main
)(int, char **);
1742 ret
= tcc_relocate(s1
, NULL
);
1745 ptr
= tcc_malloc(ret
);
1746 tcc_relocate(s1
, ptr
);
1748 prog_main
= tcc_get_symbol_err(s1
, "main");
1751 #ifdef CONFIG_TCC_BACKTRACE
1752 struct sigaction sigact
;
1753 /* install TCC signal handlers to print debug info on fatal
1755 sigact
.sa_flags
= SA_SIGINFO
| SA_RESETHAND
;
1756 sigact
.sa_sigaction
= sig_error
;
1757 sigemptyset(&sigact
.sa_mask
);
1758 sigaction(SIGFPE
, &sigact
, NULL
);
1759 sigaction(SIGILL
, &sigact
, NULL
);
1760 sigaction(SIGSEGV
, &sigact
, NULL
);
1761 sigaction(SIGBUS
, &sigact
, NULL
);
1762 sigaction(SIGABRT
, &sigact
, NULL
);
1764 error("debug mode not available");
1768 #ifdef CONFIG_TCC_BCHECK
1769 if (s1
->do_bounds_check
) {
1770 void (*bound_init
)(void);
1771 void (*bound_exit
)(void);
1772 /* set error function */
1773 rt_bound_error_msg
= tcc_get_symbol_err(s1
, "__bound_error_msg");
1774 rt_prog_main
= (unsigned long)prog_main
;
1775 /* XXX: use .init section so that it also work in binary ? */
1776 bound_init
= tcc_get_symbol_err(s1
, "__bound_init");
1777 bound_exit
= tcc_get_symbol_err(s1
, "__bound_exit");
1779 ret
= (*prog_main
)(argc
, argv
);
1783 ret
= (*prog_main
)(argc
, argv
);
1788 void tcc_memstats(void)
1791 printf("memory in use: %d\n", mem_cur_size
);
1795 static void tcc_cleanup(void)
1799 if (NULL
== tcc_state
)
1803 /* free -D defines */
1807 n
= tok_ident
- TOK_IDENT
;
1808 for(i
= 0; i
< n
; i
++)
1809 tcc_free(table_ident
[i
]);
1810 tcc_free(table_ident
);
1812 /* free sym_pools */
1813 dynarray_reset(&sym_pools
, &nb_sym_pools
);
1815 cstr_free(&tokcstr
);
1816 /* reset symbol stack */
1817 sym_free_first
= NULL
;
1818 /* cleanup from error/setjmp */
1822 TCCState
*tcc_new(void)
1828 s
= tcc_mallocz(sizeof(TCCState
));
1832 s
->output_type
= TCC_OUTPUT_MEMORY
;
1833 s
->tcc_lib_path
= CONFIG_TCCDIR
;
1837 /* we add dummy defines for some special macros to speed up tests
1838 and to have working defined() */
1839 define_push(TOK___LINE__
, MACRO_OBJ
, NULL
, NULL
);
1840 define_push(TOK___FILE__
, MACRO_OBJ
, NULL
, NULL
);
1841 define_push(TOK___DATE__
, MACRO_OBJ
, NULL
, NULL
);
1842 define_push(TOK___TIME__
, MACRO_OBJ
, NULL
, NULL
);
1844 /* standard defines */
1845 tcc_define_symbol(s
, "__STDC__", NULL
);
1846 tcc_define_symbol(s
, "__STDC_VERSION__", "199901L");
1847 #if defined(TCC_TARGET_I386)
1848 tcc_define_symbol(s
, "__i386__", NULL
);
1850 #if defined(TCC_TARGET_X86_64)
1851 tcc_define_symbol(s
, "__x86_64__", NULL
);
1853 #if defined(TCC_TARGET_ARM)
1854 tcc_define_symbol(s
, "__ARM_ARCH_4__", NULL
);
1855 tcc_define_symbol(s
, "__arm_elf__", NULL
);
1856 tcc_define_symbol(s
, "__arm_elf", NULL
);
1857 tcc_define_symbol(s
, "arm_elf", NULL
);
1858 tcc_define_symbol(s
, "__arm__", NULL
);
1859 tcc_define_symbol(s
, "__arm", NULL
);
1860 tcc_define_symbol(s
, "arm", NULL
);
1861 tcc_define_symbol(s
, "__APCS_32__", NULL
);
1863 #ifdef TCC_TARGET_PE
1864 tcc_define_symbol(s
, "_WIN32", NULL
);
1866 tcc_define_symbol(s
, "__unix__", NULL
);
1867 tcc_define_symbol(s
, "__unix", NULL
);
1868 #if defined(__linux)
1869 tcc_define_symbol(s
, "__linux__", NULL
);
1870 tcc_define_symbol(s
, "__linux", NULL
);
1873 /* tiny C specific defines */
1874 tcc_define_symbol(s
, "__TINYC__", NULL
);
1876 /* tiny C & gcc defines */
1877 tcc_define_symbol(s
, "__SIZE_TYPE__", "unsigned int");
1878 tcc_define_symbol(s
, "__PTRDIFF_TYPE__", "int");
1879 #ifdef TCC_TARGET_PE
1880 tcc_define_symbol(s
, "__WCHAR_TYPE__", "unsigned short");
1882 tcc_define_symbol(s
, "__WCHAR_TYPE__", "int");
1885 #ifndef TCC_TARGET_PE
1886 /* default library paths */
1887 tcc_add_library_path(s
, CONFIG_SYSROOT
"/usr/local/lib");
1888 tcc_add_library_path(s
, CONFIG_SYSROOT
"/usr/lib");
1889 tcc_add_library_path(s
, CONFIG_SYSROOT
"/lib");
1892 /* no section zero */
1893 dynarray_add((void ***)&s
->sections
, &s
->nb_sections
, NULL
);
1895 /* create standard sections */
1896 text_section
= new_section(s
, ".text", SHT_PROGBITS
, SHF_ALLOC
| SHF_EXECINSTR
);
1897 data_section
= new_section(s
, ".data", SHT_PROGBITS
, SHF_ALLOC
| SHF_WRITE
);
1898 bss_section
= new_section(s
, ".bss", SHT_NOBITS
, SHF_ALLOC
| SHF_WRITE
);
1900 /* symbols are always generated for linking stage */
1901 symtab_section
= new_symtab(s
, ".symtab", SHT_SYMTAB
, 0,
1903 ".hashtab", SHF_PRIVATE
);
1904 strtab_section
= symtab_section
->link
;
1906 /* private symbol table for dynamic symbols */
1907 s
->dynsymtab_section
= new_symtab(s
, ".dynsymtab", SHT_SYMTAB
, SHF_PRIVATE
,
1909 ".dynhashtab", SHF_PRIVATE
);
1910 s
->alacarte_link
= 1;
1912 #ifdef CHAR_IS_UNSIGNED
1913 s
->char_is_unsigned
= 1;
1915 #if defined(TCC_TARGET_PE) && 0
1916 /* XXX: currently the PE linker is not ready to support that */
1917 s
->leading_underscore
= 1;
1922 void tcc_delete(TCCState
*s1
)
1928 /* free all sections */
1929 for(i
= 1; i
< s1
->nb_sections
; i
++)
1930 free_section(s1
->sections
[i
]);
1931 dynarray_reset(&s1
->sections
, &s1
->nb_sections
);
1933 for(i
= 0; i
< s1
->nb_priv_sections
; i
++)
1934 free_section(s1
->priv_sections
[i
]);
1935 dynarray_reset(&s1
->priv_sections
, &s1
->nb_priv_sections
);
1937 /* free any loaded DLLs */
1938 for ( i
= 0; i
< s1
->nb_loaded_dlls
; i
++) {
1939 DLLReference
*ref
= s1
->loaded_dlls
[i
];
1941 dlclose(ref
->handle
);
1944 /* free loaded dlls array */
1945 dynarray_reset(&s1
->loaded_dlls
, &s1
->nb_loaded_dlls
);
1947 /* free library paths */
1948 dynarray_reset(&s1
->library_paths
, &s1
->nb_library_paths
);
1950 /* free include paths */
1951 dynarray_reset(&s1
->cached_includes
, &s1
->nb_cached_includes
);
1952 dynarray_reset(&s1
->include_paths
, &s1
->nb_include_paths
);
1953 dynarray_reset(&s1
->sysinclude_paths
, &s1
->nb_sysinclude_paths
);
1958 int tcc_add_include_path(TCCState
*s1
, const char *pathname
)
1962 pathname1
= tcc_strdup(pathname
);
1963 dynarray_add((void ***)&s1
->include_paths
, &s1
->nb_include_paths
, pathname1
);
1967 int tcc_add_sysinclude_path(TCCState
*s1
, const char *pathname
)
1971 pathname1
= tcc_strdup(pathname
);
1972 dynarray_add((void ***)&s1
->sysinclude_paths
, &s1
->nb_sysinclude_paths
, pathname1
);
1976 static int tcc_add_file_internal(TCCState
*s1
, const char *filename
, int flags
)
1981 BufferedFile
*saved_file
;
1983 /* find source file type with extension */
1984 ext
= tcc_fileextension(filename
);
1990 file
= tcc_open(s1
, filename
);
1992 if (flags
& AFF_PRINT_ERROR
) {
1993 error_noabort("file '%s' not found", filename
);
1999 if (flags
& AFF_PREPROCESS
) {
2000 ret
= tcc_preprocess(s1
);
2001 } else if (!ext
[0] || !PATHCMP(ext
, "c")) {
2002 /* C file assumed */
2003 ret
= tcc_compile(s1
);
2005 #ifdef CONFIG_TCC_ASM
2006 if (!strcmp(ext
, "S")) {
2007 /* preprocessed assembler */
2008 ret
= tcc_assemble(s1
, 1);
2009 } else if (!strcmp(ext
, "s")) {
2010 /* non preprocessed assembler */
2011 ret
= tcc_assemble(s1
, 0);
2014 #ifdef TCC_TARGET_PE
2015 if (!PATHCMP(ext
, "def")) {
2016 ret
= pe_load_def_file(s1
, file
->fd
);
2021 /* assume executable format: auto guess file type */
2022 ret
= read(fd
, &ehdr
, sizeof(ehdr
));
2023 lseek(fd
, 0, SEEK_SET
);
2025 error_noabort("could not read header");
2027 } else if (ret
!= sizeof(ehdr
)) {
2028 goto try_load_script
;
2031 if (ehdr
.e_ident
[0] == ELFMAG0
&&
2032 ehdr
.e_ident
[1] == ELFMAG1
&&
2033 ehdr
.e_ident
[2] == ELFMAG2
&&
2034 ehdr
.e_ident
[3] == ELFMAG3
) {
2035 file
->line_num
= 0; /* do not display line number if error */
2036 if (ehdr
.e_type
== ET_REL
) {
2037 ret
= tcc_load_object_file(s1
, fd
, 0);
2038 } else if (ehdr
.e_type
== ET_DYN
) {
2039 if (s1
->output_type
== TCC_OUTPUT_MEMORY
) {
2040 #ifdef TCC_TARGET_PE
2044 h
= dlopen(filename
, RTLD_GLOBAL
| RTLD_LAZY
);
2051 ret
= tcc_load_dll(s1
, fd
, filename
,
2052 (flags
& AFF_REFERENCED_DLL
) != 0);
2055 error_noabort("unrecognized ELF file");
2058 } else if (memcmp((char *)&ehdr
, ARMAG
, 8) == 0) {
2059 file
->line_num
= 0; /* do not display line number if error */
2060 ret
= tcc_load_archive(s1
, fd
);
2062 #ifdef TCC_TARGET_COFF
2063 if (*(uint16_t *)(&ehdr
) == COFF_C67_MAGIC
) {
2064 ret
= tcc_load_coff(s1
, fd
);
2067 #ifdef TCC_TARGET_PE
2068 if (pe_test_res_file(&ehdr
, ret
)) {
2069 ret
= pe_load_res_file(s1
, fd
);
2073 /* as GNU ld, consider it is an ld script if not recognized */
2075 ret
= tcc_load_ldscript(s1
);
2077 error_noabort("unrecognized file type");
2092 int tcc_add_file(TCCState
*s
, const char *filename
)
2094 if (s
->output_type
== TCC_OUTPUT_PREPROCESS
)
2095 return tcc_add_file_internal(s
, filename
, AFF_PRINT_ERROR
| AFF_PREPROCESS
);
2097 return tcc_add_file_internal(s
, filename
, AFF_PRINT_ERROR
);
2100 int tcc_add_library_path(TCCState
*s
, const char *pathname
)
2104 pathname1
= tcc_strdup(pathname
);
2105 dynarray_add((void ***)&s
->library_paths
, &s
->nb_library_paths
, pathname1
);
2109 /* find and load a dll. Return non zero if not found */
2110 /* XXX: add '-rpath' option support ? */
2111 static int tcc_add_dll(TCCState
*s
, const char *filename
, int flags
)
2116 for(i
= 0; i
< s
->nb_library_paths
; i
++) {
2117 snprintf(buf
, sizeof(buf
), "%s/%s",
2118 s
->library_paths
[i
], filename
);
2119 if (tcc_add_file_internal(s
, buf
, flags
) == 0)
2125 /* the library name is the same as the argument of the '-l' option */
2126 int tcc_add_library(TCCState
*s
, const char *libraryname
)
2131 /* first we look for the dynamic library if not static linking */
2132 if (!s
->static_link
) {
2133 #ifdef TCC_TARGET_PE
2134 snprintf(buf
, sizeof(buf
), "%s.def", libraryname
);
2136 snprintf(buf
, sizeof(buf
), "lib%s.so", libraryname
);
2138 if (tcc_add_dll(s
, buf
, 0) == 0)
2142 /* then we look for the static library */
2143 for(i
= 0; i
< s
->nb_library_paths
; i
++) {
2144 snprintf(buf
, sizeof(buf
), "%s/lib%s.a",
2145 s
->library_paths
[i
], libraryname
);
2146 if (tcc_add_file_internal(s
, buf
, 0) == 0)
2152 int tcc_add_symbol(TCCState
*s
, const char *name
, void *val
)
2154 add_elf_sym(symtab_section
, (unsigned long)val
, 0,
2155 ELFW(ST_INFO
)(STB_GLOBAL
, STT_NOTYPE
), 0,
2160 int tcc_set_output_type(TCCState
*s
, int output_type
)
2164 s
->output_type
= output_type
;
2167 /* default include paths */
2168 /* XXX: reverse order needed if -isystem support */
2169 #ifndef TCC_TARGET_PE
2170 tcc_add_sysinclude_path(s
, CONFIG_SYSROOT
"/usr/local/include");
2171 tcc_add_sysinclude_path(s
, CONFIG_SYSROOT
"/usr/include");
2173 snprintf(buf
, sizeof(buf
), "%s/include", s
->tcc_lib_path
);
2174 tcc_add_sysinclude_path(s
, buf
);
2175 #ifdef TCC_TARGET_PE
2176 snprintf(buf
, sizeof(buf
), "%s/include/winapi", s
->tcc_lib_path
);
2177 tcc_add_sysinclude_path(s
, buf
);
2181 /* if bound checking, then add corresponding sections */
2182 #ifdef CONFIG_TCC_BCHECK
2183 if (s
->do_bounds_check
) {
2185 tcc_define_symbol(s
, "__BOUNDS_CHECKING_ON", NULL
);
2186 /* create bounds sections */
2187 bounds_section
= new_section(s
, ".bounds",
2188 SHT_PROGBITS
, SHF_ALLOC
);
2189 lbounds_section
= new_section(s
, ".lbounds",
2190 SHT_PROGBITS
, SHF_ALLOC
);
2194 if (s
->char_is_unsigned
) {
2195 tcc_define_symbol(s
, "__CHAR_UNSIGNED__", NULL
);
2198 /* add debug sections */
2201 stab_section
= new_section(s
, ".stab", SHT_PROGBITS
, 0);
2202 stab_section
->sh_entsize
= sizeof(Stab_Sym
);
2203 stabstr_section
= new_section(s
, ".stabstr", SHT_STRTAB
, 0);
2204 put_elf_str(stabstr_section
, "");
2205 stab_section
->link
= stabstr_section
;
2206 /* put first entry */
2207 put_stabs("", 0, 0, 0, 0);
2210 /* add libc crt1/crti objects */
2211 #ifndef TCC_TARGET_PE
2212 if ((output_type
== TCC_OUTPUT_EXE
|| output_type
== TCC_OUTPUT_DLL
) &&
2214 if (output_type
!= TCC_OUTPUT_DLL
)
2215 tcc_add_file(s
, CONFIG_TCC_CRT_PREFIX
"/crt1.o");
2216 tcc_add_file(s
, CONFIG_TCC_CRT_PREFIX
"/crti.o");
2220 #ifdef TCC_TARGET_PE
2221 snprintf(buf
, sizeof(buf
), "%s/lib", s
->tcc_lib_path
);
2222 tcc_add_library_path(s
, buf
);
2228 #define WD_ALL 0x0001 /* warning is activated when using -Wall */
2229 #define FD_INVERT 0x0002 /* invert value before storing */
2231 typedef struct FlagDef
{
2237 static const FlagDef warning_defs
[] = {
2238 { offsetof(TCCState
, warn_unsupported
), 0, "unsupported" },
2239 { offsetof(TCCState
, warn_write_strings
), 0, "write-strings" },
2240 { offsetof(TCCState
, warn_error
), 0, "error" },
2241 { offsetof(TCCState
, warn_implicit_function_declaration
), WD_ALL
,
2242 "implicit-function-declaration" },
2245 static int set_flag(TCCState
*s
, const FlagDef
*flags
, int nb_flags
,
2246 const char *name
, int value
)
2253 if (r
[0] == 'n' && r
[1] == 'o' && r
[2] == '-') {
2257 for(i
= 0, p
= flags
; i
< nb_flags
; i
++, p
++) {
2258 if (!strcmp(r
, p
->name
))
2263 if (p
->flags
& FD_INVERT
)
2265 *(int *)((uint8_t *)s
+ p
->offset
) = value
;
2270 /* set/reset a warning */
2271 int tcc_set_warning(TCCState
*s
, const char *warning_name
, int value
)
2276 if (!strcmp(warning_name
, "all")) {
2277 for(i
= 0, p
= warning_defs
; i
< countof(warning_defs
); i
++, p
++) {
2278 if (p
->flags
& WD_ALL
)
2279 *(int *)((uint8_t *)s
+ p
->offset
) = 1;
2283 return set_flag(s
, warning_defs
, countof(warning_defs
),
2284 warning_name
, value
);
2288 static const FlagDef flag_defs
[] = {
2289 { offsetof(TCCState
, char_is_unsigned
), 0, "unsigned-char" },
2290 { offsetof(TCCState
, char_is_unsigned
), FD_INVERT
, "signed-char" },
2291 { offsetof(TCCState
, nocommon
), FD_INVERT
, "common" },
2292 { offsetof(TCCState
, leading_underscore
), 0, "leading-underscore" },
2295 /* set/reset a flag */
2296 int tcc_set_flag(TCCState
*s
, const char *flag_name
, int value
)
2298 return set_flag(s
, flag_defs
, countof(flag_defs
),
2302 /* set CONFIG_TCCDIR at runtime */
2303 void tcc_set_lib_path(TCCState
*s
, const char *path
)
2305 s
->tcc_lib_path
= tcc_strdup(path
);
2308 void tcc_print_stats(TCCState
*s
, int64_t total_time
)
2311 tt
= (double)total_time
/ 1000000.0;
2314 if (total_bytes
< 1)
2316 printf("%d idents, %d lines, %d bytes, %0.3f s, %d lines/s, %0.1f MB/s\n",
2317 tok_ident
- TOK_IDENT
, total_lines
, total_bytes
,
2318 tt
, (int)(total_lines
/ tt
),
2319 total_bytes
/ tt
/ 1000000.0);