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
27 #define CONFIG_TCC_STATIC
44 #include <sys/timeb.h>
45 #include <io.h> /* open, close etc. */
46 #include <direct.h> /* getcwd */
47 #define inline __inline
49 #define dlclose FreeLibrary
55 #include <sys/ucontext.h>
59 #endif /* !CONFIG_TCCBOOT */
76 /* preprocessor debug */
78 /* include file debug */
86 /* target selection */
87 //#define TCC_TARGET_I386 /* i386 code generator */
88 //#define TCC_TARGET_ARM /* ARMv4 code generator */
89 //#define TCC_TARGET_C67 /* TMS320C67xx code generator */
90 //#define TCC_TARGET_X86_64 /* x86-64 code generator */
92 /* default target is I386 */
93 #if !defined(TCC_TARGET_I386) && !defined(TCC_TARGET_ARM) && \
94 !defined(TCC_TARGET_C67) && !defined(TCC_TARGET_X86_64)
95 #define TCC_TARGET_I386
98 #if !defined(_WIN32) && !defined(TCC_UCLIBC) && !defined(TCC_TARGET_ARM) && \
99 !defined(TCC_TARGET_C67) && !defined(TCC_TARGET_X86_64)
100 #define CONFIG_TCC_BCHECK /* enable bound checking code */
103 #if defined(_WIN32) && !defined(TCC_TARGET_PE)
104 #define CONFIG_TCC_STATIC
107 /* define it to include assembler support */
108 #if !defined(TCC_TARGET_ARM) && !defined(TCC_TARGET_C67) && \
109 !defined(TCC_TARGET_X86_64)
110 #define CONFIG_TCC_ASM
113 /* object format selection */
114 #if defined(TCC_TARGET_C67)
115 #define TCC_TARGET_COFF
118 #if !defined(_WIN32) && !defined(CONFIG_TCCBOOT)
119 #define CONFIG_TCC_BACKTRACE
128 /* path to find crt1.o, crti.o and crtn.o. Only needed when generating
129 executables or dlls */
130 #define CONFIG_TCC_CRT_PREFIX CONFIG_SYSROOT "/usr/lib"
132 #define INCLUDE_STACK_SIZE 32
133 #define IFDEF_STACK_SIZE 64
134 #define VSTACK_SIZE 256
135 #define STRING_MAX_SIZE 1024
136 #define PACK_STACK_SIZE 8
138 #define TOK_HASH_SIZE 8192 /* must be a power of two */
139 #define TOK_ALLOC_INCR 512 /* must be a power of two */
140 #define TOK_MAX_SIZE 4 /* token max size in int unit when stored in string */
142 /* token symbol management */
143 typedef struct TokenSym
{
144 struct TokenSym
*hash_next
;
145 struct Sym
*sym_define
; /* direct pointer to define */
146 struct Sym
*sym_label
; /* direct pointer to label */
147 struct Sym
*sym_struct
; /* direct pointer to structure */
148 struct Sym
*sym_identifier
; /* direct pointer to identifier */
149 int tok
; /* token number */
155 typedef unsigned short nwchar_t
;
157 typedef int nwchar_t
;
160 typedef struct CString
{
161 int size
; /* size in bytes */
162 void *data
; /* either 'char *' or 'nwchar_t *' */
164 void *data_allocated
; /* if non NULL, data has been malloced */
167 /* type definition */
168 typedef struct CType
{
174 typedef union CValue
{
180 unsigned int ul
; /* address (should be unsigned long on 64 bit cpu) */
182 unsigned long long ull
;
183 struct CString
*cstr
;
189 typedef struct SValue
{
190 CType type
; /* type */
191 unsigned short r
; /* register + flags */
192 unsigned short r2
; /* second register, used for 'long long'
193 type. If not used, set to VT_CONST */
194 CValue c
; /* constant, if VT_CONST */
195 struct Sym
*sym
; /* symbol, if (VT_SYM | VT_CONST) */
198 /* symbol management */
200 int v
; /* symbol token */
201 long r
; /* associated register */
203 long c
; /* associated number */
204 int *d
; /* define token stream */
206 CType type
; /* associated type */
207 struct Sym
*next
; /* next related symbol */
208 struct Sym
*prev
; /* prev symbol in stack */
209 struct Sym
*prev_tok
; /* previous symbol for this token */
212 /* section definition */
213 /* XXX: use directly ELF structure for parameters ? */
214 /* special flag to indicate that the section should not be linked to
216 #define SHF_PRIVATE 0x80000000
218 /* special flag, too */
219 #define SECTION_ABS ((void *)1)
221 typedef struct Section
{
222 unsigned long data_offset
; /* current data offset */
223 unsigned char *data
; /* section data */
224 unsigned long data_allocated
; /* used for realloc() handling */
225 int sh_name
; /* elf section name (only used during output) */
226 int sh_num
; /* elf section number */
227 int sh_type
; /* elf section type */
228 int sh_flags
; /* elf section flags */
229 int sh_info
; /* elf section info */
230 int sh_addralign
; /* elf section alignment */
231 int sh_entsize
; /* elf entry size */
232 unsigned long sh_size
; /* section size (only used during output) */
233 unsigned long sh_addr
; /* address at which the section is relocated */
234 unsigned long sh_offset
; /* file offset */
235 int nb_hashed_syms
; /* used to resize the hash table */
236 struct Section
*link
; /* link to another section */
237 struct Section
*reloc
; /* corresponding section for relocation, if any */
238 struct Section
*hash
; /* hash table for symbols */
239 struct Section
*next
;
240 char name
[1]; /* section name */
243 typedef struct DLLReference
{
249 /* GNUC attribute definition */
250 typedef struct AttributeDef
{
254 int func_attr
; /* calling convention, exports, ... */
257 /* -------------------------------------------------- */
258 /* gr: wrappers for casting sym->r for other purposes */
266 #define FUNC_CALL(r) (((func_attr_t*)&(r))->func_call)
267 #define FUNC_EXPORT(r) (((func_attr_t*)&(r))->func_export)
268 #define FUNC_ARGS(r) (((func_attr_t*)&(r))->func_args)
269 /* -------------------------------------------------- */
271 #define SYM_STRUCT 0x40000000 /* struct/union/enum symbol space */
272 #define SYM_FIELD 0x20000000 /* struct/union field symbol space */
273 #define SYM_FIRST_ANOM 0x10000000 /* first anonymous sym */
275 /* stored in 'Sym.c' field */
276 #define FUNC_NEW 1 /* ansi function prototype */
277 #define FUNC_OLD 2 /* old function prototype */
278 #define FUNC_ELLIPSIS 3 /* ansi function prototype with ... */
280 /* stored in 'Sym.r' field */
281 #define FUNC_CDECL 0 /* standard c call */
282 #define FUNC_STDCALL 1 /* pascal c call */
283 #define FUNC_FASTCALL1 2 /* first param in %eax */
284 #define FUNC_FASTCALL2 3 /* first parameters in %eax, %edx */
285 #define FUNC_FASTCALL3 4 /* first parameter in %eax, %edx, %ecx */
286 #define FUNC_FASTCALLW 5 /* first parameter in %ecx, %edx */
288 /* field 'Sym.t' for macros */
289 #define MACRO_OBJ 0 /* object like macro */
290 #define MACRO_FUNC 1 /* function like macro */
292 /* field 'Sym.r' for C labels */
293 #define LABEL_DEFINED 0 /* label is defined */
294 #define LABEL_FORWARD 1 /* label is forward defined */
295 #define LABEL_DECLARED 2 /* label is declared but never used */
297 /* type_decl() types */
298 #define TYPE_ABSTRACT 1 /* type without variable */
299 #define TYPE_DIRECT 2 /* type with variable */
301 #define IO_BUF_SIZE 8192
303 typedef struct BufferedFile
{
307 int line_num
; /* current line number - here to simplify code */
308 int ifndef_macro
; /* #ifndef macro / #endif search */
309 int ifndef_macro_saved
; /* saved ifndef_macro */
310 int *ifdef_stack_ptr
; /* ifdef_stack value at the start of the file */
311 char inc_type
; /* type of include */
312 char inc_filename
[512]; /* filename specified by the user */
313 char filename
[1024]; /* current filename - here to simplify code */
314 unsigned char buffer
[IO_BUF_SIZE
+ 1]; /* extra size for CH_EOB char */
317 #define CH_EOB '\\' /* end of buffer or '\0' char in file */
318 #define CH_EOF (-1) /* end of file */
320 /* parsing state (used to save parser state to reparse part of the
321 source several times) */
322 typedef struct ParseState
{
329 /* used to record tokens */
330 typedef struct TokenString
{
337 /* inline functions */
338 typedef struct InlineFunc
{
344 /* include file cache, used to find files faster and also to eliminate
345 inclusion if the include file is protected by #ifndef ... #endif */
346 typedef struct CachedInclude
{
348 int hash_next
; /* -1 if none */
349 char type
; /* '"' or '>' to give include type */
350 char filename
[1]; /* path specified in #include */
353 #define CACHED_INCLUDES_HASH_SIZE 512
355 #ifdef CONFIG_TCC_ASM
356 typedef struct ExprValue
{
361 #define MAX_ASM_OPERANDS 30
362 typedef struct ASMOperand
{
363 int id
; /* GCC 3 optionnal identifier (0 if number only supported */
365 char asm_str
[16]; /* computed asm string for operand */
366 SValue
*vt
; /* C value of the expression */
367 int ref_index
; /* if >= 0, gives reference to a output constraint */
368 int input_index
; /* if >= 0, gives reference to an input constraint */
369 int priority
; /* priority, used to assign registers */
370 int reg
; /* if >= 0, register number used for this operand */
371 int is_llong
; /* true if double register value */
372 int is_memory
; /* true if memory operand */
373 int is_rw
; /* for '+' modifier */
380 BufferedFile
**include_stack_ptr
;
381 int *ifdef_stack_ptr
;
383 /* include file handling */
384 char **include_paths
;
385 int nb_include_paths
;
386 char **sysinclude_paths
;
387 int nb_sysinclude_paths
;
388 CachedInclude
**cached_includes
;
389 int nb_cached_includes
;
391 char **library_paths
;
392 int nb_library_paths
;
394 /* array of all loaded dlls (including those referenced by loaded
396 DLLReference
**loaded_dlls
;
401 int nb_sections
; /* number of sections, including first dummy section */
403 Section
**priv_sections
;
404 int nb_priv_sections
; /* number of private sections */
409 unsigned long *got_offsets
;
411 /* give the correspondance from symtab indexes to dynsym indexes */
412 int *symtab_to_dynsym
;
414 /* temporary dynamic symbol sections (for dll loading) */
415 Section
*dynsymtab_section
;
416 /* exported dynamic symbol section */
419 int nostdinc
; /* if true, no standard headers are added */
420 int nostdlib
; /* if true, no standard libraries are added */
421 int nocommon
; /* if true, do not use common symbols for .bss data */
423 /* if true, static linking is performed */
426 /* soname as specified on the command line (-soname) */
429 /* if true, all symbols are exported */
432 /* if true, only link in referenced objects from archive */
435 /* address of text section */
436 unsigned long text_addr
;
439 /* output format, see TCC_OUTPUT_FORMAT_xxx */
442 /* C language options */
443 int char_is_unsigned
;
444 int leading_underscore
;
446 /* warning switches */
447 int warn_write_strings
;
448 int warn_unsupported
;
451 int warn_implicit_function_declaration
;
453 /* display some information during compilation */
455 /* compile with debug symbol (and use them if error during execution) */
457 /* compile with built-in memory and bounds checker */
459 /* give the path of the tcc libraries */
460 const char *tcc_lib_path
;
464 void (*error_func
)(void *opaque
, const char *msg
);
465 int error_set_jmp_enabled
;
466 jmp_buf error_jmp_buf
;
469 /* tiny assembler state */
472 /* see include_stack_ptr */
473 BufferedFile
*include_stack
[INCLUDE_STACK_SIZE
];
475 /* see ifdef_stack_ptr */
476 int ifdef_stack
[IFDEF_STACK_SIZE
];
478 /* see cached_includes */
479 int cached_includes_hash
[CACHED_INCLUDES_HASH_SIZE
];
482 int pack_stack
[PACK_STACK_SIZE
];
485 /* output file for preprocessing */
488 /* for tcc_relocate */
491 struct InlineFunc
**inline_fns
;
494 #ifndef TCC_TARGET_PE
495 #ifdef TCC_TARGET_X86_64
496 /* write PLT and GOT here */
497 char *runtime_plt_and_got
;
498 unsigned int runtime_plt_and_got_offset
;
503 /* The current value can be: */
504 #define VT_VALMASK 0x00ff
505 #define VT_CONST 0x00f0 /* constant in vc
506 (must be first non register value) */
507 #define VT_LLOCAL 0x00f1 /* lvalue, offset on stack */
508 #define VT_LOCAL 0x00f2 /* offset on stack */
509 #define VT_CMP 0x00f3 /* the value is stored in processor flags (in vc) */
510 #define VT_JMP 0x00f4 /* value is the consequence of jmp true (even) */
511 #define VT_JMPI 0x00f5 /* value is the consequence of jmp false (odd) */
512 #define VT_LVAL 0x0100 /* var is an lvalue */
513 #define VT_SYM 0x0200 /* a symbol value is added */
514 #define VT_MUSTCAST 0x0400 /* value must be casted to be correct (used for
515 char/short stored in integer registers) */
516 #define VT_MUSTBOUND 0x0800 /* bound checking must be done before
517 dereferencing value */
518 #define VT_BOUNDED 0x8000 /* value is bounded. The address of the
519 bounding function call point is in vc */
520 #define VT_LVAL_BYTE 0x1000 /* lvalue is a byte */
521 #define VT_LVAL_SHORT 0x2000 /* lvalue is a short */
522 #define VT_LVAL_UNSIGNED 0x4000 /* lvalue is unsigned */
523 #define VT_LVAL_TYPE (VT_LVAL_BYTE | VT_LVAL_SHORT | VT_LVAL_UNSIGNED)
526 #define VT_INT 0 /* integer type */
527 #define VT_BYTE 1 /* signed byte type */
528 #define VT_SHORT 2 /* short type */
529 #define VT_VOID 3 /* void type */
530 #define VT_PTR 4 /* pointer */
531 #define VT_ENUM 5 /* enum definition */
532 #define VT_FUNC 6 /* function type */
533 #define VT_STRUCT 7 /* struct/union definition */
534 #define VT_FLOAT 8 /* IEEE float */
535 #define VT_DOUBLE 9 /* IEEE double */
536 #define VT_LDOUBLE 10 /* IEEE long double */
537 #define VT_BOOL 11 /* ISOC99 boolean type */
538 #define VT_LLONG 12 /* 64 bit integer */
539 #define VT_LONG 13 /* long integer (NEVER USED as type, only
541 #define VT_BTYPE 0x000f /* mask for basic type */
542 #define VT_UNSIGNED 0x0010 /* unsigned type */
543 #define VT_ARRAY 0x0020 /* array type (also has VT_PTR) */
544 #define VT_BITFIELD 0x0040 /* bitfield modifier */
545 #define VT_CONSTANT 0x0800 /* const modifier */
546 #define VT_VOLATILE 0x1000 /* volatile modifier */
547 #define VT_SIGNED 0x2000 /* signed type */
550 #define VT_EXTERN 0x00000080 /* extern definition */
551 #define VT_STATIC 0x00000100 /* static variable */
552 #define VT_TYPEDEF 0x00000200 /* typedef definition */
553 #define VT_INLINE 0x00000400 /* inline definition */
555 #define VT_STRUCT_SHIFT 16 /* shift for bitfield shift values */
557 /* type mask (except storage) */
558 #define VT_STORAGE (VT_EXTERN | VT_STATIC | VT_TYPEDEF | VT_INLINE)
559 #define VT_TYPE (~(VT_STORAGE))
563 /* warning: the following compare tokens depend on i386 asm code */
570 #define TOK_Nset 0x98
571 #define TOK_Nclear 0x99
577 #define TOK_LAND 0xa0
581 #define TOK_MID 0xa3 /* inc/dec, to void constant */
583 #define TOK_UDIV 0xb0 /* unsigned division */
584 #define TOK_UMOD 0xb1 /* unsigned modulo */
585 #define TOK_PDIV 0xb2 /* fast division with undefined rounding for pointers */
586 #define TOK_CINT 0xb3 /* number in tokc */
587 #define TOK_CCHAR 0xb4 /* char constant in tokc */
588 #define TOK_STR 0xb5 /* pointer to string in tokc */
589 #define TOK_TWOSHARPS 0xb6 /* ## preprocessing token */
590 #define TOK_LCHAR 0xb7
591 #define TOK_LSTR 0xb8
592 #define TOK_CFLOAT 0xb9 /* float constant */
593 #define TOK_LINENUM 0xba /* line number info */
594 #define TOK_CDOUBLE 0xc0 /* double constant */
595 #define TOK_CLDOUBLE 0xc1 /* long double constant */
596 #define TOK_UMULL 0xc2 /* unsigned 32x32 -> 64 mul */
597 #define TOK_ADDC1 0xc3 /* add with carry generation */
598 #define TOK_ADDC2 0xc4 /* add with carry use */
599 #define TOK_SUBC1 0xc5 /* add with carry generation */
600 #define TOK_SUBC2 0xc6 /* add with carry use */
601 #define TOK_CUINT 0xc8 /* unsigned int constant */
602 #define TOK_CLLONG 0xc9 /* long long constant */
603 #define TOK_CULLONG 0xca /* unsigned long long constant */
604 #define TOK_ARROW 0xcb
605 #define TOK_DOTS 0xcc /* three dots */
606 #define TOK_SHR 0xcd /* unsigned shift right */
607 #define TOK_PPNUM 0xce /* preprocessor number */
609 #define TOK_SHL 0x01 /* shift left */
610 #define TOK_SAR 0x02 /* signed shift right */
612 /* assignement operators : normal operator or 0x80 */
613 #define TOK_A_MOD 0xa5
614 #define TOK_A_AND 0xa6
615 #define TOK_A_MUL 0xaa
616 #define TOK_A_ADD 0xab
617 #define TOK_A_SUB 0xad
618 #define TOK_A_DIV 0xaf
619 #define TOK_A_XOR 0xde
620 #define TOK_A_OR 0xfc
621 #define TOK_A_SHL 0x81
622 #define TOK_A_SAR 0x82
625 #define offsetof(type, field) ((size_t) &((type *)0)->field)
629 #define countof(tab) (sizeof(tab) / sizeof((tab)[0]))
632 #define TOK_EOF (-1) /* end of file */
633 #define TOK_LINEFEED 10 /* line feed */
635 /* all identificators and strings have token above that */
636 #define TOK_IDENT 256
638 /* only used for i386 asm opcodes definitions */
639 #define DEF_ASM(x) DEF(TOK_ASM_ ## x, #x)
642 DEF(TOK_ASM_ ## x ## b, #x "b") \
643 DEF(TOK_ASM_ ## x ## w, #x "w") \
644 DEF(TOK_ASM_ ## x ## l, #x "l") \
645 DEF(TOK_ASM_ ## x, #x)
648 DEF(TOK_ASM_ ## x ## w, #x "w") \
649 DEF(TOK_ASM_ ## x ## l, #x "l") \
650 DEF(TOK_ASM_ ## x, #x)
653 DEF(TOK_ASM_ ## f ## x ## s, "f" #x "s") \
654 DEF(TOK_ASM_ ## fi ## x ## l, "fi" #x "l") \
655 DEF(TOK_ASM_ ## f ## x ## l, "f" #x "l") \
656 DEF(TOK_ASM_ ## fi ## x ## s, "fi" #x "s")
659 DEF(TOK_ASM_ ## f ## x, "f" #x ) \
660 DEF(TOK_ASM_ ## f ## x ## p, "f" #x "p") \
663 #define DEF_ASMTEST(x) \
695 #define TOK_ASM_int TOK_INT
698 TOK_LAST
= TOK_IDENT
- 1,
699 #define DEF(id, str) id,
704 #define TOK_UIDENT TOK_DEFINE
707 #define snprintf _snprintf
708 #define vsnprintf _vsnprintf
710 #define strtold (long double)strtod
711 #define strtof (float)strtod
712 #define strtoll (long long)strtol
714 #elif defined(TCC_UCLIBC) || defined(__FreeBSD__) || defined(__DragonFly__) \
715 || defined(__OpenBSD__)
716 /* currently incorrect */
717 long double strtold(const char *nptr
, char **endptr
)
719 return (long double)strtod(nptr
, endptr
);
721 float strtof(const char *nptr
, char **endptr
)
723 return (float)strtod(nptr
, endptr
);
726 /* XXX: need to define this to use them in non ISOC99 context */
727 extern float strtof (const char *__nptr
, char **__endptr
);
728 extern long double strtold (const char *__nptr
, char **__endptr
);
732 #define IS_PATHSEP(c) (c == '/' || c == '\\')
733 #define IS_ABSPATH(p) (IS_PATHSEP(p[0]) || (p[0] && p[1] == ':' && IS_PATHSEP(p[2])))
734 #define PATHCMP stricmp
736 #define IS_PATHSEP(c) (c == '/')
737 #define IS_ABSPATH(p) IS_PATHSEP(p[0])
738 #define PATHCMP strcmp
741 void error(const char *fmt
, ...);
742 void error_noabort(const char *fmt
, ...);
743 void warning(const char *fmt
, ...);
745 void tcc_set_lib_path_w32(TCCState
*s
);
746 int tcc_set_flag(TCCState
*s
, const char *flag_name
, int value
);
747 void tcc_print_stats(TCCState
*s
, int64_t total_time
);
749 void tcc_free(void *ptr
);
750 void *tcc_malloc(unsigned long size
);
751 void *tcc_mallocz(unsigned long size
);
752 void *tcc_realloc(void *ptr
, unsigned long size
);
753 char *tcc_strdup(const char *str
);
755 char *tcc_basename(const char *name
);
756 char *tcc_fileextension (const char *name
);
757 char *pstrcpy(char *buf
, int buf_size
, const char *s
);
758 char *pstrcat(char *buf
, int buf_size
, const char *s
);
759 void dynarray_add(void ***ptab
, int *nb_ptr
, void *data
);
760 void dynarray_reset(void *pp
, int *n
);
762 #ifdef CONFIG_TCC_BACKTRACE
763 extern int num_callers
;
764 extern const char **rt_bound_error_msg
;
767 /* true if float/double/long double type */
768 static inline int is_float(int t
)
772 return bt
== VT_LDOUBLE
|| bt
== VT_DOUBLE
|| bt
== VT_FLOAT
;
775 /* space exlcuding newline */
776 static inline int is_space(int ch
)
778 return ch
== ' ' || ch
== '\t' || ch
== '\v' || ch
== '\f' || ch
== '\r';