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
327 #ifdef TCC_TARGET_I386
328 #include "i386-asm.c"
332 static void asm_instr(void)
334 error("inline asm() not supported");
336 static void asm_global_instr(void)
338 error("inline asm() not supported");
344 #ifdef TCC_TARGET_COFF
352 /********************************************************/
354 char *normalize_slashes(char *path
)
357 for (p
= path
; *p
; ++p
)
365 /* on win32, we suppose the lib and includes are at the location of 'tcc.exe' */
366 void tcc_set_lib_path_w32(TCCState
*s
)
369 GetModuleFileNameA(tcc_module
, path
, sizeof path
);
370 p
= tcc_basename(normalize_slashes(strlwr(path
)));
371 if (p
- 5 > path
&& 0 == strncmp(p
- 5, "/bin/", 5))
376 tcc_set_lib_path(s
, path
);
380 BOOL WINAPI
DllMain (HANDLE hDll
, DWORD dwReason
, LPVOID lpReserved
)
382 if (DLL_PROCESS_ATTACH
== dwReason
)
389 /********************************************************/
390 #ifdef CONFIG_TCC_STATIC
392 #define RTLD_LAZY 0x001
393 #define RTLD_NOW 0x002
394 #define RTLD_GLOBAL 0x100
395 #define RTLD_DEFAULT NULL
397 /* dummy function for profiling */
398 void *dlopen(const char *filename
, int flag
)
403 void dlclose(void *p
)
407 const char *dlerror(void)
412 typedef struct TCCSyms
{
417 #define TCCSYM(a) { #a, &a, },
419 /* add the symbol you want here if no dynamic linking is done */
420 static TCCSyms tcc_syms
[] = {
421 #if !defined(CONFIG_TCCBOOT)
430 void *resolve_sym(TCCState
*s1
, const char *symbol
)
434 while (p
->str
!= NULL
) {
435 if (!strcmp(p
->str
, symbol
))
442 #elif defined(_WIN32)
443 #define dlclose FreeLibrary
448 void *resolve_sym(TCCState
*s1
, const char *sym
)
450 return dlsym(RTLD_DEFAULT
, sym
);
455 /********************************************************/
457 /* we use our own 'finite' function to avoid potential problems with
458 non standard math libs */
459 /* XXX: endianness dependent */
460 int ieee_finite(double d
)
463 return ((unsigned)((p
[1] | 0x800fffff) + 1)) >> 31;
466 /* copy a string and truncate it. */
467 char *pstrcpy(char *buf
, int buf_size
, const char *s
)
474 q_end
= buf
+ buf_size
- 1;
486 /* strcat and truncate. */
487 char *pstrcat(char *buf
, int buf_size
, const char *s
)
492 pstrcpy(buf
+ len
, buf_size
- len
, s
);
496 /* extract the basename of a file */
497 char *tcc_basename(const char *name
)
499 char *p
= strchr(name
, 0);
500 while (p
> name
&& !IS_PATHSEP(p
[-1]))
505 char *tcc_fileextension (const char *name
)
507 char *b
= tcc_basename(name
);
508 char *e
= strrchr(b
, '.');
509 return e
? e
: strchr(b
, 0);
513 char *normalize_slashes(char *path
)
516 for (p
= path
; *p
; ++p
)
522 void tcc_set_lib_path_w32(TCCState
*s
)
524 /* on win32, we suppose the lib and includes are at the location
527 GetModuleFileNameA(NULL
, path
, sizeof path
);
528 p
= tcc_basename(normalize_slashes(strlwr(path
)));
529 if (p
- 5 > path
&& 0 == strncmp(p
- 5, "/bin/", 5))
534 tcc_set_lib_path(s
, path
);
538 void set_pages_executable(void *ptr
, unsigned long length
)
541 unsigned long old_protect
;
542 VirtualProtect(ptr
, length
, PAGE_EXECUTE_READWRITE
, &old_protect
);
544 unsigned long start
, end
;
545 start
= (unsigned long)ptr
& ~(PAGESIZE
- 1);
546 end
= (unsigned long)ptr
+ length
;
547 end
= (end
+ PAGESIZE
- 1) & ~(PAGESIZE
- 1);
548 mprotect((void *)start
, end
- start
, PROT_READ
| PROT_WRITE
| PROT_EXEC
);
552 /* memory management */
556 unsigned malloc_usable_size(void*);
559 void tcc_free(void *ptr
)
562 mem_cur_size
-= malloc_usable_size(ptr
);
567 void *tcc_malloc(unsigned long size
)
572 error("memory full");
574 mem_cur_size
+= malloc_usable_size(ptr
);
575 if (mem_cur_size
> mem_max_size
)
576 mem_max_size
= mem_cur_size
;
581 void *tcc_mallocz(unsigned long size
)
584 ptr
= tcc_malloc(size
);
585 memset(ptr
, 0, size
);
589 void *tcc_realloc(void *ptr
, unsigned long size
)
593 mem_cur_size
-= malloc_usable_size(ptr
);
595 ptr1
= realloc(ptr
, size
);
597 /* NOTE: count not correct if alloc error, but not critical */
598 mem_cur_size
+= malloc_usable_size(ptr1
);
599 if (mem_cur_size
> mem_max_size
)
600 mem_max_size
= mem_cur_size
;
605 char *tcc_strdup(const char *str
)
608 ptr
= tcc_malloc(strlen(str
) + 1);
613 #define free(p) use_tcc_free(p)
614 #define malloc(s) use_tcc_malloc(s)
615 #define realloc(p, s) use_tcc_realloc(p, s)
617 void dynarray_add(void ***ptab
, int *nb_ptr
, void *data
)
624 /* every power of two we double array size */
625 if ((nb
& (nb
- 1)) == 0) {
630 pp
= tcc_realloc(pp
, nb_alloc
* sizeof(void *));
632 error("memory full");
639 void dynarray_reset(void *pp
, int *n
)
642 for (p
= *(void***)pp
; *n
; ++p
, --*n
)
645 tcc_free(*(void**)pp
);
649 /* symbol allocator */
650 static Sym
*__sym_malloc(void)
652 Sym
*sym_pool
, *sym
, *last_sym
;
655 sym_pool
= tcc_malloc(SYM_POOL_NB
* sizeof(Sym
));
656 dynarray_add(&sym_pools
, &nb_sym_pools
, sym_pool
);
658 last_sym
= sym_free_first
;
660 for(i
= 0; i
< SYM_POOL_NB
; i
++) {
661 sym
->next
= last_sym
;
665 sym_free_first
= last_sym
;
669 static inline Sym
*sym_malloc(void)
672 sym
= sym_free_first
;
674 sym
= __sym_malloc();
675 sym_free_first
= sym
->next
;
679 static inline void sym_free(Sym
*sym
)
681 sym
->next
= sym_free_first
;
682 sym_free_first
= sym
;
685 Section
*new_section(TCCState
*s1
, const char *name
, int sh_type
, int sh_flags
)
689 sec
= tcc_mallocz(sizeof(Section
) + strlen(name
));
690 strcpy(sec
->name
, name
);
691 sec
->sh_type
= sh_type
;
692 sec
->sh_flags
= sh_flags
;
700 sec
->sh_addralign
= 4;
703 sec
->sh_addralign
= 1;
706 sec
->sh_addralign
= 32; /* default conservative alignment */
710 if (sh_flags
& SHF_PRIVATE
) {
711 dynarray_add((void ***)&s1
->priv_sections
, &s1
->nb_priv_sections
, sec
);
713 sec
->sh_num
= s1
->nb_sections
;
714 dynarray_add((void ***)&s1
->sections
, &s1
->nb_sections
, sec
);
720 static void free_section(Section
*s
)
725 /* realloc section and set its content to zero */
726 static void section_realloc(Section
*sec
, unsigned long new_size
)
731 size
= sec
->data_allocated
;
734 while (size
< new_size
)
736 data
= tcc_realloc(sec
->data
, size
);
738 error("memory full");
739 memset(data
+ sec
->data_allocated
, 0, size
- sec
->data_allocated
);
741 sec
->data_allocated
= size
;
744 /* reserve at least 'size' bytes in section 'sec' from
746 static void *section_ptr_add(Section
*sec
, unsigned long size
)
748 unsigned long offset
, offset1
;
750 offset
= sec
->data_offset
;
751 offset1
= offset
+ size
;
752 if (offset1
> sec
->data_allocated
)
753 section_realloc(sec
, offset1
);
754 sec
->data_offset
= offset1
;
755 return sec
->data
+ offset
;
758 /* return a reference to a section, and create it if it does not
760 Section
*find_section(TCCState
*s1
, const char *name
)
764 for(i
= 1; i
< s1
->nb_sections
; i
++) {
765 sec
= s1
->sections
[i
];
766 if (!strcmp(name
, sec
->name
))
769 /* sections are created as PROGBITS */
770 return new_section(s1
, name
, SHT_PROGBITS
, SHF_ALLOC
);
773 /* update sym->c so that it points to an external symbol in section
774 'section' with value 'value' */
775 static void put_extern_sym2(Sym
*sym
, Section
*section
,
776 unsigned long value
, unsigned long size
,
777 int can_add_underscore
)
779 int sym_type
, sym_bind
, sh_num
, info
, other
, attr
;
786 else if (section
== SECTION_ABS
)
789 sh_num
= section
->sh_num
;
793 if ((sym
->type
.t
& VT_BTYPE
) == VT_FUNC
) {
797 attr
= sym
->type
.ref
->r
;
798 if (FUNC_EXPORT(attr
))
800 if (FUNC_CALL(attr
) == FUNC_STDCALL
)
804 sym_type
= STT_OBJECT
;
807 if (sym
->type
.t
& VT_STATIC
)
808 sym_bind
= STB_LOCAL
;
810 sym_bind
= STB_GLOBAL
;
813 name
= get_tok_str(sym
->v
, NULL
);
814 #ifdef CONFIG_TCC_BCHECK
815 if (tcc_state
->do_bounds_check
) {
818 /* XXX: avoid doing that for statics ? */
819 /* if bound checking is activated, we change some function
820 names by adding the "__bound" prefix */
823 /* XXX: we rely only on malloc hooks */
836 strcpy(buf
, "__bound_");
845 if ((other
& 2) && can_add_underscore
) {
846 sprintf(buf1
, "_%s@%d", name
, FUNC_ARGS(attr
));
850 if (tcc_state
->leading_underscore
&& can_add_underscore
) {
852 pstrcpy(buf1
+ 1, sizeof(buf1
) - 1, name
);
855 info
= ELFW(ST_INFO
)(sym_bind
, sym_type
);
856 sym
->c
= add_elf_sym(symtab_section
, value
, size
, info
, other
, sh_num
, name
);
858 esym
= &((ElfW(Sym
) *)symtab_section
->data
)[sym
->c
];
859 esym
->st_value
= value
;
860 esym
->st_size
= size
;
861 esym
->st_shndx
= sh_num
;
862 esym
->st_other
|= other
;
866 static void put_extern_sym(Sym
*sym
, Section
*section
,
867 unsigned long value
, unsigned long size
)
869 put_extern_sym2(sym
, section
, value
, size
, 1);
872 /* add a new relocation entry to symbol 'sym' in section 's' */
873 static void greloc(Section
*s
, Sym
*sym
, unsigned long offset
, int type
)
876 put_extern_sym(sym
, NULL
, 0, 0);
877 /* now we can add ELF relocation info */
878 put_elf_reloc(symtab_section
, s
, offset
, type
, sym
->c
);
881 static void strcat_vprintf(char *buf
, int buf_size
, const char *fmt
, va_list ap
)
885 vsnprintf(buf
+ len
, buf_size
- len
, fmt
, ap
);
888 static void strcat_printf(char *buf
, int buf_size
, const char *fmt
, ...)
892 strcat_vprintf(buf
, buf_size
, fmt
, ap
);
896 void error1(TCCState
*s1
, int is_warning
, const char *fmt
, va_list ap
)
903 for(f
= s1
->include_stack
; f
< s1
->include_stack_ptr
; f
++)
904 strcat_printf(buf
, sizeof(buf
), "In file included from %s:%d:\n",
905 (*f
)->filename
, (*f
)->line_num
);
906 if (file
->line_num
> 0) {
907 strcat_printf(buf
, sizeof(buf
),
908 "%s:%d: ", file
->filename
, file
->line_num
);
910 strcat_printf(buf
, sizeof(buf
),
911 "%s: ", file
->filename
);
914 strcat_printf(buf
, sizeof(buf
),
918 strcat_printf(buf
, sizeof(buf
), "warning: ");
920 strcat_printf(buf
, sizeof(buf
), "error: ");
921 strcat_vprintf(buf
, sizeof(buf
), fmt
, ap
);
923 if (!s1
->error_func
) {
924 /* default case: stderr */
925 fprintf(stderr
, "%s\n", buf
);
927 s1
->error_func(s1
->error_opaque
, buf
);
929 if (!is_warning
|| s1
->warn_error
)
933 void tcc_set_error_func(TCCState
*s
, void *error_opaque
,
934 void (*error_func
)(void *opaque
, const char *msg
))
936 s
->error_opaque
= error_opaque
;
937 s
->error_func
= error_func
;
940 /* error without aborting current compilation */
941 void error_noabort(const char *fmt
, ...)
943 TCCState
*s1
= tcc_state
;
947 error1(s1
, 0, fmt
, ap
);
951 void error(const char *fmt
, ...)
953 TCCState
*s1
= tcc_state
;
957 error1(s1
, 0, fmt
, ap
);
959 /* better than nothing: in some cases, we accept to handle errors */
960 if (s1
->error_set_jmp_enabled
) {
961 longjmp(s1
->error_jmp_buf
, 1);
963 /* XXX: eliminate this someday */
968 void expect(const char *msg
)
970 error("%s expected", msg
);
973 void warning(const char *fmt
, ...)
975 TCCState
*s1
= tcc_state
;
982 error1(s1
, 1, fmt
, ap
);
989 error("'%c' expected", c
);
993 static void test_lvalue(void)
995 if (!(vtop
->r
& VT_LVAL
))
999 /* CString handling */
1001 static void cstr_realloc(CString
*cstr
, int new_size
)
1006 size
= cstr
->size_allocated
;
1008 size
= 8; /* no need to allocate a too small first string */
1009 while (size
< new_size
)
1011 data
= tcc_realloc(cstr
->data_allocated
, size
);
1013 error("memory full");
1014 cstr
->data_allocated
= data
;
1015 cstr
->size_allocated
= size
;
1020 static inline void cstr_ccat(CString
*cstr
, int ch
)
1023 size
= cstr
->size
+ 1;
1024 if (size
> cstr
->size_allocated
)
1025 cstr_realloc(cstr
, size
);
1026 ((unsigned char *)cstr
->data
)[size
- 1] = ch
;
1030 static void cstr_cat(CString
*cstr
, const char *str
)
1042 /* add a wide char */
1043 static void cstr_wccat(CString
*cstr
, int ch
)
1046 size
= cstr
->size
+ sizeof(nwchar_t
);
1047 if (size
> cstr
->size_allocated
)
1048 cstr_realloc(cstr
, size
);
1049 *(nwchar_t
*)(((unsigned char *)cstr
->data
) + size
- sizeof(nwchar_t
)) = ch
;
1053 static void cstr_new(CString
*cstr
)
1055 memset(cstr
, 0, sizeof(CString
));
1058 /* free string and reset it to NULL */
1059 static void cstr_free(CString
*cstr
)
1061 tcc_free(cstr
->data_allocated
);
1065 #define cstr_reset(cstr) cstr_free(cstr)
1067 /* XXX: unicode ? */
1068 static void add_char(CString
*cstr
, int c
)
1070 if (c
== '\'' || c
== '\"' || c
== '\\') {
1071 /* XXX: could be more precise if char or string */
1072 cstr_ccat(cstr
, '\\');
1074 if (c
>= 32 && c
<= 126) {
1077 cstr_ccat(cstr
, '\\');
1079 cstr_ccat(cstr
, 'n');
1081 cstr_ccat(cstr
, '0' + ((c
>> 6) & 7));
1082 cstr_ccat(cstr
, '0' + ((c
>> 3) & 7));
1083 cstr_ccat(cstr
, '0' + (c
& 7));
1088 /* push, without hashing */
1089 static Sym
*sym_push2(Sym
**ps
, int v
, int t
, long c
)
1106 /* find a symbol and return its associated structure. 's' is the top
1107 of the symbol stack */
1108 static Sym
*sym_find2(Sym
*s
, int v
)
1118 /* structure lookup */
1119 static inline Sym
*struct_find(int v
)
1122 if ((unsigned)v
>= (unsigned)(tok_ident
- TOK_IDENT
))
1124 return table_ident
[v
]->sym_struct
;
1127 /* find an identifier */
1128 static inline Sym
*sym_find(int v
)
1131 if ((unsigned)v
>= (unsigned)(tok_ident
- TOK_IDENT
))
1133 return table_ident
[v
]->sym_identifier
;
1136 /* push a given symbol on the symbol stack */
1137 static Sym
*sym_push(int v
, CType
*type
, int r
, int c
)
1146 s
= sym_push2(ps
, v
, type
->t
, c
);
1147 s
->type
.ref
= type
->ref
;
1149 /* don't record fields or anonymous symbols */
1151 if (!(v
& SYM_FIELD
) && (v
& ~SYM_STRUCT
) < SYM_FIRST_ANOM
) {
1152 /* record symbol in token array */
1153 ts
= table_ident
[(v
& ~SYM_STRUCT
) - TOK_IDENT
];
1155 ps
= &ts
->sym_struct
;
1157 ps
= &ts
->sym_identifier
;
1164 /* push a global identifier */
1165 static Sym
*global_identifier_push(int v
, int t
, int c
)
1168 s
= sym_push2(&global_stack
, v
, t
, c
);
1169 /* don't record anonymous symbol */
1170 if (v
< SYM_FIRST_ANOM
) {
1171 ps
= &table_ident
[v
- TOK_IDENT
]->sym_identifier
;
1172 /* modify the top most local identifier, so that
1173 sym_identifier will point to 's' when popped */
1175 ps
= &(*ps
)->prev_tok
;
1182 /* pop symbols until top reaches 'b' */
1183 static void sym_pop(Sym
**ptop
, Sym
*b
)
1193 /* remove symbol in token array */
1195 if (!(v
& SYM_FIELD
) && (v
& ~SYM_STRUCT
) < SYM_FIRST_ANOM
) {
1196 ts
= table_ident
[(v
& ~SYM_STRUCT
) - TOK_IDENT
];
1198 ps
= &ts
->sym_struct
;
1200 ps
= &ts
->sym_identifier
;
1211 BufferedFile
*tcc_open(TCCState
*s1
, const char *filename
)
1216 if (strcmp(filename
, "-") == 0)
1217 fd
= 0, filename
= "stdin";
1219 fd
= open(filename
, O_RDONLY
| O_BINARY
);
1220 if ((s1
->verbose
== 2 && fd
>= 0) || s1
->verbose
== 3)
1221 printf("%s %*s%s\n", fd
< 0 ? "nf":"->",
1222 (int)(s1
->include_stack_ptr
- s1
->include_stack
), "", filename
);
1225 bf
= tcc_malloc(sizeof(BufferedFile
));
1227 bf
->buf_ptr
= bf
->buffer
;
1228 bf
->buf_end
= bf
->buffer
;
1229 bf
->buffer
[0] = CH_EOB
; /* put eob symbol */
1230 pstrcpy(bf
->filename
, sizeof(bf
->filename
), filename
);
1232 normalize_slashes(bf
->filename
);
1235 bf
->ifndef_macro
= 0;
1236 bf
->ifdef_stack_ptr
= s1
->ifdef_stack_ptr
;
1237 // printf("opening '%s'\n", filename);
1241 void tcc_close(BufferedFile
*bf
)
1243 total_lines
+= bf
->line_num
;
1248 /* compile the C file opened in 'file'. Return non zero if errors. */
1249 static int tcc_compile(TCCState
*s1
)
1253 volatile int section_sym
;
1256 printf("%s: **** new file\n", file
->filename
);
1258 preprocess_init(s1
);
1260 cur_text_section
= NULL
;
1262 anon_sym
= SYM_FIRST_ANOM
;
1264 /* file info: full path + filename */
1265 section_sym
= 0; /* avoid warning */
1267 section_sym
= put_elf_sym(symtab_section
, 0, 0,
1268 ELFW(ST_INFO
)(STB_LOCAL
, STT_SECTION
), 0,
1269 text_section
->sh_num
, NULL
);
1270 getcwd(buf
, sizeof(buf
));
1272 normalize_slashes(buf
);
1274 pstrcat(buf
, sizeof(buf
), "/");
1275 put_stabs_r(buf
, N_SO
, 0, 0,
1276 text_section
->data_offset
, text_section
, section_sym
);
1277 put_stabs_r(file
->filename
, N_SO
, 0, 0,
1278 text_section
->data_offset
, text_section
, section_sym
);
1280 /* an elf symbol of type STT_FILE must be put so that STB_LOCAL
1281 symbols can be safely used */
1282 put_elf_sym(symtab_section
, 0, 0,
1283 ELFW(ST_INFO
)(STB_LOCAL
, STT_FILE
), 0,
1284 SHN_ABS
, file
->filename
);
1286 /* define some often used types */
1287 int_type
.t
= VT_INT
;
1289 char_pointer_type
.t
= VT_BYTE
;
1290 mk_pointer(&char_pointer_type
);
1292 func_old_type
.t
= VT_FUNC
;
1293 func_old_type
.ref
= sym_push(SYM_FIELD
, &int_type
, FUNC_CDECL
, FUNC_OLD
);
1295 #if defined(TCC_ARM_EABI) && defined(TCC_ARM_VFP)
1296 float_type
.t
= VT_FLOAT
;
1297 double_type
.t
= VT_DOUBLE
;
1299 func_float_type
.t
= VT_FUNC
;
1300 func_float_type
.ref
= sym_push(SYM_FIELD
, &float_type
, FUNC_CDECL
, FUNC_OLD
);
1301 func_double_type
.t
= VT_FUNC
;
1302 func_double_type
.ref
= sym_push(SYM_FIELD
, &double_type
, FUNC_CDECL
, FUNC_OLD
);
1306 /* define 'void *alloca(unsigned int)' builtin function */
1311 sym
= sym_push(p
, mk_pointer(VT_VOID
), FUNC_CDECL
, FUNC_NEW
);
1312 s1
= sym_push(SYM_FIELD
, VT_UNSIGNED
| VT_INT
, 0, 0);
1315 sym_push(TOK_alloca
, VT_FUNC
| (p
<< VT_STRUCT_SHIFT
), VT_CONST
, 0);
1319 define_start
= define_stack
;
1322 if (setjmp(s1
->error_jmp_buf
) == 0) {
1324 s1
->error_set_jmp_enabled
= 1;
1326 ch
= file
->buf_ptr
[0];
1327 tok_flags
= TOK_FLAG_BOL
| TOK_FLAG_BOF
;
1328 parse_flags
= PARSE_FLAG_PREPROCESS
| PARSE_FLAG_TOK_NUM
;
1332 expect("declaration");
1334 /* end of translation unit info */
1336 put_stabs_r(NULL
, N_SO
, 0, 0,
1337 text_section
->data_offset
, text_section
, section_sym
);
1340 s1
->error_set_jmp_enabled
= 0;
1342 /* reset define stack, but leave -Dsymbols (may be incorrect if
1343 they are undefined) */
1344 free_defines(define_start
);
1346 gen_inline_functions();
1348 sym_pop(&global_stack
, NULL
);
1349 sym_pop(&local_stack
, NULL
);
1351 return s1
->nb_errors
!= 0 ? -1 : 0;
1354 int tcc_compile_string(TCCState
*s
, const char *str
)
1356 BufferedFile bf1
, *bf
= &bf1
;
1360 /* init file structure */
1362 /* XXX: avoid copying */
1364 buf
= tcc_malloc(len
+ 1);
1367 memcpy(buf
, str
, len
);
1370 bf
->buf_end
= buf
+ len
;
1371 pstrcpy(bf
->filename
, sizeof(bf
->filename
), "<string>");
1374 ret
= tcc_compile(s
);
1378 /* currently, no need to close */
1382 /* define a preprocessor symbol. A value can also be provided with the '=' operator */
1383 void tcc_define_symbol(TCCState
*s1
, const char *sym
, const char *value
)
1385 BufferedFile bf1
, *bf
= &bf1
;
1387 pstrcpy(bf
->buffer
, IO_BUF_SIZE
, sym
);
1388 pstrcat(bf
->buffer
, IO_BUF_SIZE
, " ");
1392 pstrcat(bf
->buffer
, IO_BUF_SIZE
, value
);
1394 /* init file structure */
1396 bf
->buf_ptr
= bf
->buffer
;
1397 bf
->buf_end
= bf
->buffer
+ strlen(bf
->buffer
);
1398 *bf
->buf_end
= CH_EOB
;
1399 bf
->filename
[0] = '\0';
1403 s1
->include_stack_ptr
= s1
->include_stack
;
1405 /* parse with define parser */
1406 ch
= file
->buf_ptr
[0];
1412 /* undefine a preprocessor symbol */
1413 void tcc_undefine_symbol(TCCState
*s1
, const char *sym
)
1417 ts
= tok_alloc(sym
, strlen(sym
));
1418 s
= define_find(ts
->tok
);
1419 /* undefine symbol by putting an invalid name */
1425 #ifdef CONFIG_TCC_BACKTRACE
1426 /* print the position in the source file of PC value 'pc' by reading
1427 the stabs debug information */
1428 static unsigned long rt_printline(unsigned long wanted_pc
)
1430 Stab_Sym
*sym
, *sym_end
;
1431 char func_name
[128], last_func_name
[128];
1432 unsigned long func_addr
, last_pc
, pc
;
1433 const char *incl_files
[INCLUDE_STACK_SIZE
];
1434 int incl_index
, len
, last_line_num
, i
;
1435 const char *str
, *p
;
1437 fprintf(stderr
, "0x%08lx:", wanted_pc
);
1439 func_name
[0] = '\0';
1442 last_func_name
[0] = '\0';
1443 last_pc
= 0xffffffff;
1445 sym
= (Stab_Sym
*)stab_section
->data
+ 1;
1446 sym_end
= (Stab_Sym
*)(stab_section
->data
+ stab_section
->data_offset
);
1447 while (sym
< sym_end
) {
1448 switch(sym
->n_type
) {
1449 /* function start or end */
1451 if (sym
->n_strx
== 0) {
1452 /* we test if between last line and end of function */
1453 pc
= sym
->n_value
+ func_addr
;
1454 if (wanted_pc
>= last_pc
&& wanted_pc
< pc
)
1456 func_name
[0] = '\0';
1459 str
= stabstr_section
->data
+ sym
->n_strx
;
1460 p
= strchr(str
, ':');
1462 pstrcpy(func_name
, sizeof(func_name
), str
);
1465 if (len
> sizeof(func_name
) - 1)
1466 len
= sizeof(func_name
) - 1;
1467 memcpy(func_name
, str
, len
);
1468 func_name
[len
] = '\0';
1470 func_addr
= sym
->n_value
;
1473 /* line number info */
1475 pc
= sym
->n_value
+ func_addr
;
1476 if (wanted_pc
>= last_pc
&& wanted_pc
< pc
)
1479 last_line_num
= sym
->n_desc
;
1481 strcpy(last_func_name
, func_name
);
1485 str
= stabstr_section
->data
+ sym
->n_strx
;
1487 if (incl_index
< INCLUDE_STACK_SIZE
) {
1488 incl_files
[incl_index
++] = str
;
1496 if (sym
->n_strx
== 0) {
1497 incl_index
= 0; /* end of translation unit */
1499 str
= stabstr_section
->data
+ sym
->n_strx
;
1500 /* do not add path */
1502 if (len
> 0 && str
[len
- 1] != '/')
1510 /* second pass: we try symtab symbols (no line number info) */
1513 ElfW(Sym
) *sym
, *sym_end
;
1516 sym_end
= (ElfW(Sym
) *)(symtab_section
->data
+ symtab_section
->data_offset
);
1517 for(sym
= (ElfW(Sym
) *)symtab_section
->data
+ 1;
1520 type
= ELFW(ST_TYPE
)(sym
->st_info
);
1521 if (type
== STT_FUNC
) {
1522 if (wanted_pc
>= sym
->st_value
&&
1523 wanted_pc
< sym
->st_value
+ sym
->st_size
) {
1524 pstrcpy(last_func_name
, sizeof(last_func_name
),
1525 strtab_section
->data
+ sym
->st_name
);
1526 func_addr
= sym
->st_value
;
1532 /* did not find any info: */
1533 fprintf(stderr
, " ???\n");
1536 if (last_func_name
[0] != '\0') {
1537 fprintf(stderr
, " %s()", last_func_name
);
1539 if (incl_index
> 0) {
1540 fprintf(stderr
, " (%s:%d",
1541 incl_files
[incl_index
- 1], last_line_num
);
1542 for(i
= incl_index
- 2; i
>= 0; i
--)
1543 fprintf(stderr
, ", included from %s", incl_files
[i
]);
1544 fprintf(stderr
, ")");
1546 fprintf(stderr
, "\n");
1551 /* fix for glibc 2.1 */
1557 /* return the PC at frame level 'level'. Return non zero if not found */
1558 static int rt_get_caller_pc(unsigned long *paddr
,
1559 ucontext_t
*uc
, int level
)
1565 #if defined(__FreeBSD__)
1566 *paddr
= uc
->uc_mcontext
.mc_eip
;
1567 #elif defined(__dietlibc__)
1568 *paddr
= uc
->uc_mcontext
.eip
;
1570 *paddr
= uc
->uc_mcontext
.gregs
[REG_EIP
];
1574 #if defined(__FreeBSD__)
1575 fp
= uc
->uc_mcontext
.mc_ebp
;
1576 #elif defined(__dietlibc__)
1577 fp
= uc
->uc_mcontext
.ebp
;
1579 fp
= uc
->uc_mcontext
.gregs
[REG_EBP
];
1581 for(i
=1;i
<level
;i
++) {
1582 /* XXX: check address validity with program info */
1583 if (fp
<= 0x1000 || fp
>= 0xc0000000)
1585 fp
= ((unsigned long *)fp
)[0];
1587 *paddr
= ((unsigned long *)fp
)[1];
1591 #elif defined(__x86_64__)
1592 /* return the PC at frame level 'level'. Return non zero if not found */
1593 static int rt_get_caller_pc(unsigned long *paddr
,
1594 ucontext_t
*uc
, int level
)
1600 /* XXX: only support linux */
1601 *paddr
= uc
->uc_mcontext
.gregs
[REG_RIP
];
1604 fp
= uc
->uc_mcontext
.gregs
[REG_RBP
];
1605 for(i
=1;i
<level
;i
++) {
1606 /* XXX: check address validity with program info */
1609 fp
= ((unsigned long *)fp
)[0];
1611 *paddr
= ((unsigned long *)fp
)[1];
1616 #warning add arch specific rt_get_caller_pc()
1617 static int rt_get_caller_pc(unsigned long *paddr
,
1618 ucontext_t
*uc
, int level
)
1624 /* emit a run time error at position 'pc' */
1625 void rt_error(ucontext_t
*uc
, const char *fmt
, ...)
1632 fprintf(stderr
, "Runtime error: ");
1633 vfprintf(stderr
, fmt
, ap
);
1634 fprintf(stderr
, "\n");
1635 for(i
=0;i
<num_callers
;i
++) {
1636 if (rt_get_caller_pc(&pc
, uc
, i
) < 0)
1639 fprintf(stderr
, "at ");
1641 fprintf(stderr
, "by ");
1642 pc
= rt_printline(pc
);
1643 if (pc
== rt_prog_main
&& pc
)
1650 /* signal handler for fatal errors */
1651 static void sig_error(int signum
, siginfo_t
*siginf
, void *puc
)
1653 ucontext_t
*uc
= puc
;
1657 switch(siginf
->si_code
) {
1660 rt_error(uc
, "division by zero");
1663 rt_error(uc
, "floating point exception");
1669 if (rt_bound_error_msg
&& *rt_bound_error_msg
)
1670 rt_error(uc
, *rt_bound_error_msg
);
1672 rt_error(uc
, "dereferencing invalid pointer");
1675 rt_error(uc
, "illegal instruction");
1678 rt_error(uc
, "abort() called");
1681 rt_error(uc
, "caught signal %d", signum
);
1689 /* copy code into memory passed in by the caller and do all relocations
1690 (needed before using tcc_get_symbol()).
1691 returns -1 on error and required size if ptr is NULL */
1692 int tcc_relocate(TCCState
*s1
, void *ptr
)
1695 unsigned long offset
, length
;
1699 if (0 == s1
->runtime_added
) {
1700 s1
->runtime_added
= 1;
1702 #ifdef TCC_TARGET_PE
1703 pe_output_file(s1
, NULL
);
1705 tcc_add_runtime(s1
);
1706 relocate_common_syms();
1707 tcc_add_linker_symbols(s1
);
1708 build_got_entries(s1
);
1714 offset
= 0, mem
= (uplong
)ptr
;
1715 for(i
= 1; i
< s1
->nb_sections
; i
++) {
1716 s
= s1
->sections
[i
];
1717 if (0 == (s
->sh_flags
& SHF_ALLOC
))
1719 length
= s
->data_offset
;
1720 s
->sh_addr
= mem
? (mem
+ offset
+ 15) & ~15 : 0;
1721 offset
= (offset
+ length
+ 15) & ~15;
1724 /* relocate symbols */
1725 relocate_syms(s1
, 1);
1729 #ifndef TCC_TARGET_PE
1730 #ifdef TCC_TARGET_X86_64
1731 s1
->runtime_plt_and_got_offset
= 0;
1732 s1
->runtime_plt_and_got
= (char *)(mem
+ offset
);
1733 /* double the size of the buffer for got and plt entries
1734 XXX: calculate exact size for them? */
1742 /* relocate each section */
1743 for(i
= 1; i
< s1
->nb_sections
; i
++) {
1744 s
= s1
->sections
[i
];
1746 relocate_section(s1
, s
);
1749 for(i
= 1; i
< s1
->nb_sections
; i
++) {
1750 s
= s1
->sections
[i
];
1751 if (0 == (s
->sh_flags
& SHF_ALLOC
))
1753 length
= s
->data_offset
;
1754 // printf("%-12s %08x %04x\n", s->name, s->sh_addr, length);
1755 ptr
= (void*)(uplong
)s
->sh_addr
;
1756 if (NULL
== s
->data
|| s
->sh_type
== SHT_NOBITS
)
1757 memset(ptr
, 0, length
);
1759 memcpy(ptr
, s
->data
, length
);
1760 /* mark executable sections as executable in memory */
1761 if (s
->sh_flags
& SHF_EXECINSTR
)
1762 set_pages_executable(ptr
, length
);
1764 #ifndef TCC_TARGET_PE
1765 #ifdef TCC_TARGET_X86_64
1766 set_pages_executable(s1
->runtime_plt_and_got
,
1767 s1
->runtime_plt_and_got_offset
);
1773 /* launch the compiled program with the given arguments */
1774 int tcc_run(TCCState
*s1
, int argc
, char **argv
)
1776 int (*prog_main
)(int, char **);
1780 ret
= tcc_relocate(s1
, NULL
);
1783 ptr
= tcc_malloc(ret
);
1784 tcc_relocate(s1
, ptr
);
1786 prog_main
= tcc_get_symbol_err(s1
, "main");
1789 #ifdef CONFIG_TCC_BACKTRACE
1790 struct sigaction sigact
;
1791 /* install TCC signal handlers to print debug info on fatal
1793 sigact
.sa_flags
= SA_SIGINFO
| SA_RESETHAND
;
1794 sigact
.sa_sigaction
= sig_error
;
1795 sigemptyset(&sigact
.sa_mask
);
1796 sigaction(SIGFPE
, &sigact
, NULL
);
1797 sigaction(SIGILL
, &sigact
, NULL
);
1798 sigaction(SIGSEGV
, &sigact
, NULL
);
1799 sigaction(SIGBUS
, &sigact
, NULL
);
1800 sigaction(SIGABRT
, &sigact
, NULL
);
1802 error("debug mode not available");
1806 #ifdef CONFIG_TCC_BCHECK
1807 if (s1
->do_bounds_check
) {
1808 void (*bound_init
)(void);
1809 void (*bound_exit
)(void);
1810 /* set error function */
1811 rt_bound_error_msg
= tcc_get_symbol_err(s1
, "__bound_error_msg");
1812 rt_prog_main
= (unsigned long)prog_main
;
1813 /* XXX: use .init section so that it also work in binary ? */
1814 bound_init
= tcc_get_symbol_err(s1
, "__bound_init");
1815 bound_exit
= tcc_get_symbol_err(s1
, "__bound_exit");
1817 ret
= (*prog_main
)(argc
, argv
);
1821 ret
= (*prog_main
)(argc
, argv
);
1826 void tcc_memstats(void)
1829 printf("memory in use: %d\n", mem_cur_size
);
1833 static void tcc_cleanup(void)
1837 if (NULL
== tcc_state
)
1841 /* free -D defines */
1845 n
= tok_ident
- TOK_IDENT
;
1846 for(i
= 0; i
< n
; i
++)
1847 tcc_free(table_ident
[i
]);
1848 tcc_free(table_ident
);
1850 /* free sym_pools */
1851 dynarray_reset(&sym_pools
, &nb_sym_pools
);
1853 cstr_free(&tokcstr
);
1854 /* reset symbol stack */
1855 sym_free_first
= NULL
;
1856 /* cleanup from error/setjmp */
1860 TCCState
*tcc_new(void)
1866 s
= tcc_mallocz(sizeof(TCCState
));
1870 s
->output_type
= TCC_OUTPUT_MEMORY
;
1871 s
->tcc_lib_path
= CONFIG_TCCDIR
;
1875 /* we add dummy defines for some special macros to speed up tests
1876 and to have working defined() */
1877 define_push(TOK___LINE__
, MACRO_OBJ
, NULL
, NULL
);
1878 define_push(TOK___FILE__
, MACRO_OBJ
, NULL
, NULL
);
1879 define_push(TOK___DATE__
, MACRO_OBJ
, NULL
, NULL
);
1880 define_push(TOK___TIME__
, MACRO_OBJ
, NULL
, NULL
);
1882 /* standard defines */
1883 tcc_define_symbol(s
, "__STDC__", NULL
);
1884 tcc_define_symbol(s
, "__STDC_VERSION__", "199901L");
1885 #if defined(TCC_TARGET_I386)
1886 tcc_define_symbol(s
, "__i386__", NULL
);
1888 #if defined(TCC_TARGET_X86_64)
1889 tcc_define_symbol(s
, "__x86_64__", NULL
);
1891 #if defined(TCC_TARGET_ARM)
1892 tcc_define_symbol(s
, "__ARM_ARCH_4__", NULL
);
1893 tcc_define_symbol(s
, "__arm_elf__", NULL
);
1894 tcc_define_symbol(s
, "__arm_elf", NULL
);
1895 tcc_define_symbol(s
, "arm_elf", NULL
);
1896 tcc_define_symbol(s
, "__arm__", NULL
);
1897 tcc_define_symbol(s
, "__arm", NULL
);
1898 tcc_define_symbol(s
, "arm", NULL
);
1899 tcc_define_symbol(s
, "__APCS_32__", NULL
);
1901 #ifdef TCC_TARGET_PE
1902 tcc_define_symbol(s
, "_WIN32", NULL
);
1903 #ifdef TCC_TARGET_X86_64
1904 tcc_define_symbol(s
, "_WIN64", NULL
);
1907 tcc_define_symbol(s
, "__unix__", NULL
);
1908 tcc_define_symbol(s
, "__unix", NULL
);
1909 #if defined(__linux)
1910 tcc_define_symbol(s
, "__linux__", NULL
);
1911 tcc_define_symbol(s
, "__linux", NULL
);
1914 /* tiny C specific defines */
1915 tcc_define_symbol(s
, "__TINYC__", NULL
);
1917 /* tiny C & gcc defines */
1918 tcc_define_symbol(s
, "__SIZE_TYPE__", "unsigned int");
1919 tcc_define_symbol(s
, "__PTRDIFF_TYPE__", "int");
1920 #ifdef TCC_TARGET_PE
1921 tcc_define_symbol(s
, "__WCHAR_TYPE__", "unsigned short");
1923 tcc_define_symbol(s
, "__WCHAR_TYPE__", "int");
1926 #ifndef TCC_TARGET_PE
1927 /* default library paths */
1928 tcc_add_library_path(s
, CONFIG_SYSROOT
"/usr/local/lib");
1929 tcc_add_library_path(s
, CONFIG_SYSROOT
"/usr/lib");
1930 tcc_add_library_path(s
, CONFIG_SYSROOT
"/lib");
1933 /* no section zero */
1934 dynarray_add((void ***)&s
->sections
, &s
->nb_sections
, NULL
);
1936 /* create standard sections */
1937 text_section
= new_section(s
, ".text", SHT_PROGBITS
, SHF_ALLOC
| SHF_EXECINSTR
);
1938 data_section
= new_section(s
, ".data", SHT_PROGBITS
, SHF_ALLOC
| SHF_WRITE
);
1939 bss_section
= new_section(s
, ".bss", SHT_NOBITS
, SHF_ALLOC
| SHF_WRITE
);
1941 /* symbols are always generated for linking stage */
1942 symtab_section
= new_symtab(s
, ".symtab", SHT_SYMTAB
, 0,
1944 ".hashtab", SHF_PRIVATE
);
1945 strtab_section
= symtab_section
->link
;
1947 /* private symbol table for dynamic symbols */
1948 s
->dynsymtab_section
= new_symtab(s
, ".dynsymtab", SHT_SYMTAB
, SHF_PRIVATE
,
1950 ".dynhashtab", SHF_PRIVATE
);
1951 s
->alacarte_link
= 1;
1953 #ifdef CHAR_IS_UNSIGNED
1954 s
->char_is_unsigned
= 1;
1956 #if defined(TCC_TARGET_PE) && 0
1957 /* XXX: currently the PE linker is not ready to support that */
1958 s
->leading_underscore
= 1;
1963 void tcc_delete(TCCState
*s1
)
1969 /* free all sections */
1970 for(i
= 1; i
< s1
->nb_sections
; i
++)
1971 free_section(s1
->sections
[i
]);
1972 dynarray_reset(&s1
->sections
, &s1
->nb_sections
);
1974 for(i
= 0; i
< s1
->nb_priv_sections
; i
++)
1975 free_section(s1
->priv_sections
[i
]);
1976 dynarray_reset(&s1
->priv_sections
, &s1
->nb_priv_sections
);
1978 /* free any loaded DLLs */
1979 for ( i
= 0; i
< s1
->nb_loaded_dlls
; i
++) {
1980 DLLReference
*ref
= s1
->loaded_dlls
[i
];
1982 dlclose(ref
->handle
);
1985 /* free loaded dlls array */
1986 dynarray_reset(&s1
->loaded_dlls
, &s1
->nb_loaded_dlls
);
1988 /* free library paths */
1989 dynarray_reset(&s1
->library_paths
, &s1
->nb_library_paths
);
1991 /* free include paths */
1992 dynarray_reset(&s1
->cached_includes
, &s1
->nb_cached_includes
);
1993 dynarray_reset(&s1
->include_paths
, &s1
->nb_include_paths
);
1994 dynarray_reset(&s1
->sysinclude_paths
, &s1
->nb_sysinclude_paths
);
1999 int tcc_add_include_path(TCCState
*s1
, const char *pathname
)
2003 pathname1
= tcc_strdup(pathname
);
2004 dynarray_add((void ***)&s1
->include_paths
, &s1
->nb_include_paths
, pathname1
);
2008 int tcc_add_sysinclude_path(TCCState
*s1
, const char *pathname
)
2012 pathname1
= tcc_strdup(pathname
);
2013 dynarray_add((void ***)&s1
->sysinclude_paths
, &s1
->nb_sysinclude_paths
, pathname1
);
2017 static int tcc_add_file_internal(TCCState
*s1
, const char *filename
, int flags
)
2022 BufferedFile
*saved_file
;
2026 /* find source file type with extension */
2027 ext
= tcc_fileextension(filename
);
2033 file
= tcc_open(s1
, filename
);
2035 if (flags
& AFF_PRINT_ERROR
)
2036 error_noabort("file '%s' not found", filename
);
2040 if (flags
& AFF_PREPROCESS
) {
2041 ret
= tcc_preprocess(s1
);
2045 if (!ext
[0] || !PATHCMP(ext
, "c")) {
2046 /* C file assumed */
2047 ret
= tcc_compile(s1
);
2051 #ifdef CONFIG_TCC_ASM
2052 if (!strcmp(ext
, "S")) {
2053 /* preprocessed assembler */
2054 ret
= tcc_assemble(s1
, 1);
2058 if (!strcmp(ext
, "s")) {
2059 /* non preprocessed assembler */
2060 ret
= tcc_assemble(s1
, 0);
2066 /* assume executable format: auto guess file type */
2067 size
= read(fd
, &ehdr
, sizeof(ehdr
));
2068 lseek(fd
, 0, SEEK_SET
);
2070 error_noabort("could not read header");
2074 if (size
== sizeof(ehdr
) &&
2075 ehdr
.e_ident
[0] == ELFMAG0
&&
2076 ehdr
.e_ident
[1] == ELFMAG1
&&
2077 ehdr
.e_ident
[2] == ELFMAG2
&&
2078 ehdr
.e_ident
[3] == ELFMAG3
) {
2080 /* do not display line number if error */
2082 if (ehdr
.e_type
== ET_REL
) {
2083 ret
= tcc_load_object_file(s1
, fd
, 0);
2087 #ifndef TCC_TARGET_PE
2088 if (ehdr
.e_type
== ET_DYN
) {
2089 if (s1
->output_type
== TCC_OUTPUT_MEMORY
) {
2091 h
= dlopen(filename
, RTLD_GLOBAL
| RTLD_LAZY
);
2095 ret
= tcc_load_dll(s1
, fd
, filename
,
2096 (flags
& AFF_REFERENCED_DLL
) != 0);
2101 error_noabort("unrecognized ELF file");
2105 if (memcmp((char *)&ehdr
, ARMAG
, 8) == 0) {
2106 file
->line_num
= 0; /* do not display line number if error */
2107 ret
= tcc_load_archive(s1
, fd
);
2111 #ifdef TCC_TARGET_COFF
2112 if (*(uint16_t *)(&ehdr
) == COFF_C67_MAGIC
) {
2113 ret
= tcc_load_coff(s1
, fd
);
2118 #ifdef TCC_TARGET_PE
2119 ret
= pe_load_file(s1
, filename
, fd
);
2121 /* as GNU ld, consider it is an ld script if not recognized */
2122 ret
= tcc_load_ldscript(s1
);
2125 error_noabort("unrecognized file type");
2134 int tcc_add_file(TCCState
*s
, const char *filename
)
2136 if (s
->output_type
== TCC_OUTPUT_PREPROCESS
)
2137 return tcc_add_file_internal(s
, filename
, AFF_PRINT_ERROR
| AFF_PREPROCESS
);
2139 return tcc_add_file_internal(s
, filename
, AFF_PRINT_ERROR
);
2142 int tcc_add_library_path(TCCState
*s
, const char *pathname
)
2146 pathname1
= tcc_strdup(pathname
);
2147 dynarray_add((void ***)&s
->library_paths
, &s
->nb_library_paths
, pathname1
);
2151 /* find and load a dll. Return non zero if not found */
2152 /* XXX: add '-rpath' option support ? */
2153 static int tcc_add_dll(TCCState
*s
, const char *filename
, int flags
)
2158 for(i
= 0; i
< s
->nb_library_paths
; i
++) {
2159 snprintf(buf
, sizeof(buf
), "%s/%s",
2160 s
->library_paths
[i
], filename
);
2161 if (tcc_add_file_internal(s
, buf
, flags
) == 0)
2167 /* the library name is the same as the argument of the '-l' option */
2168 int tcc_add_library(TCCState
*s
, const char *libraryname
)
2173 /* first we look for the dynamic library if not static linking */
2174 if (!s
->static_link
) {
2175 #ifdef TCC_TARGET_PE
2176 if (pe_add_dll(s
, libraryname
) == 0)
2179 snprintf(buf
, sizeof(buf
), "lib%s.so", libraryname
);
2180 if (tcc_add_dll(s
, buf
, 0) == 0)
2184 /* then we look for the static library */
2185 for(i
= 0; i
< s
->nb_library_paths
; i
++) {
2186 snprintf(buf
, sizeof(buf
), "%s/lib%s.a",
2187 s
->library_paths
[i
], libraryname
);
2188 if (tcc_add_file_internal(s
, buf
, 0) == 0)
2194 int tcc_add_symbol(TCCState
*s
, const char *name
, void *val
)
2196 add_elf_sym(symtab_section
, (uplong
)val
, 0,
2197 ELFW(ST_INFO
)(STB_GLOBAL
, STT_NOTYPE
), 0,
2202 int tcc_set_output_type(TCCState
*s
, int output_type
)
2206 s
->output_type
= output_type
;
2209 /* default include paths */
2210 /* XXX: reverse order needed if -isystem support */
2211 #ifndef TCC_TARGET_PE
2212 tcc_add_sysinclude_path(s
, CONFIG_SYSROOT
"/usr/local/include");
2213 tcc_add_sysinclude_path(s
, CONFIG_SYSROOT
"/usr/include");
2215 snprintf(buf
, sizeof(buf
), "%s/include", s
->tcc_lib_path
);
2216 tcc_add_sysinclude_path(s
, buf
);
2217 #ifdef TCC_TARGET_PE
2218 snprintf(buf
, sizeof(buf
), "%s/include/winapi", s
->tcc_lib_path
);
2219 tcc_add_sysinclude_path(s
, buf
);
2223 /* if bound checking, then add corresponding sections */
2224 #ifdef CONFIG_TCC_BCHECK
2225 if (s
->do_bounds_check
) {
2227 tcc_define_symbol(s
, "__BOUNDS_CHECKING_ON", NULL
);
2228 /* create bounds sections */
2229 bounds_section
= new_section(s
, ".bounds",
2230 SHT_PROGBITS
, SHF_ALLOC
);
2231 lbounds_section
= new_section(s
, ".lbounds",
2232 SHT_PROGBITS
, SHF_ALLOC
);
2236 if (s
->char_is_unsigned
) {
2237 tcc_define_symbol(s
, "__CHAR_UNSIGNED__", NULL
);
2240 /* add debug sections */
2243 stab_section
= new_section(s
, ".stab", SHT_PROGBITS
, 0);
2244 stab_section
->sh_entsize
= sizeof(Stab_Sym
);
2245 stabstr_section
= new_section(s
, ".stabstr", SHT_STRTAB
, 0);
2246 put_elf_str(stabstr_section
, "");
2247 stab_section
->link
= stabstr_section
;
2248 /* put first entry */
2249 put_stabs("", 0, 0, 0, 0);
2252 /* add libc crt1/crti objects */
2253 #ifndef TCC_TARGET_PE
2254 if ((output_type
== TCC_OUTPUT_EXE
|| output_type
== TCC_OUTPUT_DLL
) &&
2256 if (output_type
!= TCC_OUTPUT_DLL
)
2257 tcc_add_file(s
, CONFIG_TCC_CRT_PREFIX
"/crt1.o");
2258 tcc_add_file(s
, CONFIG_TCC_CRT_PREFIX
"/crti.o");
2262 #ifdef TCC_TARGET_PE
2263 snprintf(buf
, sizeof(buf
), "%s/lib", s
->tcc_lib_path
);
2264 tcc_add_library_path(s
, buf
);
2266 if (GetSystemDirectory(buf
, sizeof buf
))
2267 tcc_add_library_path(s
, buf
);
2274 #define WD_ALL 0x0001 /* warning is activated when using -Wall */
2275 #define FD_INVERT 0x0002 /* invert value before storing */
2277 typedef struct FlagDef
{
2283 static const FlagDef warning_defs
[] = {
2284 { offsetof(TCCState
, warn_unsupported
), 0, "unsupported" },
2285 { offsetof(TCCState
, warn_write_strings
), 0, "write-strings" },
2286 { offsetof(TCCState
, warn_error
), 0, "error" },
2287 { offsetof(TCCState
, warn_implicit_function_declaration
), WD_ALL
,
2288 "implicit-function-declaration" },
2291 static int set_flag(TCCState
*s
, const FlagDef
*flags
, int nb_flags
,
2292 const char *name
, int value
)
2299 if (r
[0] == 'n' && r
[1] == 'o' && r
[2] == '-') {
2303 for(i
= 0, p
= flags
; i
< nb_flags
; i
++, p
++) {
2304 if (!strcmp(r
, p
->name
))
2309 if (p
->flags
& FD_INVERT
)
2311 *(int *)((uint8_t *)s
+ p
->offset
) = value
;
2316 /* set/reset a warning */
2317 int tcc_set_warning(TCCState
*s
, const char *warning_name
, int value
)
2322 if (!strcmp(warning_name
, "all")) {
2323 for(i
= 0, p
= warning_defs
; i
< countof(warning_defs
); i
++, p
++) {
2324 if (p
->flags
& WD_ALL
)
2325 *(int *)((uint8_t *)s
+ p
->offset
) = 1;
2329 return set_flag(s
, warning_defs
, countof(warning_defs
),
2330 warning_name
, value
);
2334 static const FlagDef flag_defs
[] = {
2335 { offsetof(TCCState
, char_is_unsigned
), 0, "unsigned-char" },
2336 { offsetof(TCCState
, char_is_unsigned
), FD_INVERT
, "signed-char" },
2337 { offsetof(TCCState
, nocommon
), FD_INVERT
, "common" },
2338 { offsetof(TCCState
, leading_underscore
), 0, "leading-underscore" },
2341 /* set/reset a flag */
2342 int tcc_set_flag(TCCState
*s
, const char *flag_name
, int value
)
2344 return set_flag(s
, flag_defs
, countof(flag_defs
),
2348 /* set CONFIG_TCCDIR at runtime */
2349 void tcc_set_lib_path(TCCState
*s
, const char *path
)
2351 s
->tcc_lib_path
= tcc_strdup(path
);
2354 void tcc_print_stats(TCCState
*s
, int64_t total_time
)
2357 tt
= (double)total_time
/ 1000000.0;
2360 if (total_bytes
< 1)
2362 printf("%d idents, %d lines, %d bytes, %0.3f s, %d lines/s, %0.1f MB/s\n",
2363 tok_ident
- TOK_IDENT
, total_lines
, total_bytes
,
2364 tt
, (int)(total_lines
/ tt
),
2365 total_bytes
/ tt
/ 1000000.0);