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
26 #define CONFIG_TCC_STATIC
42 #include <sys/timeb.h>
47 #include <sys/ucontext.h>
51 #endif /* !CONFIG_TCCBOOT */
68 /* preprocessor debug */
70 /* include file debug */
78 /* target selection */
79 //#define TCC_TARGET_I386 /* i386 code generator */
80 //#define TCC_TARGET_ARM /* ARMv4 code generator */
81 //#define TCC_TARGET_C67 /* TMS320C67xx code generator */
83 /* default target is I386 */
84 #if !defined(TCC_TARGET_I386) && !defined(TCC_TARGET_ARM) && \
85 !defined(TCC_TARGET_C67)
86 #define TCC_TARGET_I386
89 #if !defined(_WIN32) && !defined(TCC_UCLIBC) && !defined(TCC_TARGET_ARM) && \
90 !defined(TCC_TARGET_C67)
91 #define CONFIG_TCC_BCHECK /* enable bound checking code */
94 #if defined(_WIN32) && !defined(TCC_TARGET_PE)
95 #define CONFIG_TCC_STATIC
98 /* define it to include assembler support */
99 #if !defined(TCC_TARGET_ARM) && !defined(TCC_TARGET_C67)
100 #define CONFIG_TCC_ASM
103 /* object format selection */
104 #if defined(TCC_TARGET_C67)
105 #define TCC_TARGET_COFF
114 /* path to find crt1.o, crti.o and crtn.o. Only needed when generating
115 executables or dlls */
116 #define CONFIG_TCC_CRT_PREFIX "/usr/lib"
118 #define INCLUDE_STACK_SIZE 32
119 #define IFDEF_STACK_SIZE 64
120 #define VSTACK_SIZE 256
121 #define STRING_MAX_SIZE 1024
122 #define PACK_STACK_SIZE 8
124 #define TOK_HASH_SIZE 8192 /* must be a power of two */
125 #define TOK_ALLOC_INCR 512 /* must be a power of two */
126 #define TOK_MAX_SIZE 4 /* token max size in int unit when stored in string */
128 /* token symbol management */
129 typedef struct TokenSym
{
130 struct TokenSym
*hash_next
;
131 struct Sym
*sym_define
; /* direct pointer to define */
132 struct Sym
*sym_label
; /* direct pointer to label */
133 struct Sym
*sym_struct
; /* direct pointer to structure */
134 struct Sym
*sym_identifier
; /* direct pointer to identifier */
135 int tok
; /* token number */
141 typedef unsigned short nwchar_t
;
143 typedef int nwchar_t
;
146 typedef struct CString
{
147 int size
; /* size in bytes */
148 void *data
; /* either 'char *' or 'nwchar_t *' */
150 void *data_allocated
; /* if non NULL, data has been malloced */
153 /* type definition */
154 typedef struct CType
{
160 typedef union CValue
{
166 unsigned int ul
; /* address (should be unsigned long on 64 bit cpu) */
168 unsigned long long ull
;
169 struct CString
*cstr
;
175 typedef struct SValue
{
176 CType type
; /* type */
177 unsigned short r
; /* register + flags */
178 unsigned short r2
; /* second register, used for 'long long'
179 type. If not used, set to VT_CONST */
180 CValue c
; /* constant, if VT_CONST */
181 struct Sym
*sym
; /* symbol, if (VT_SYM | VT_CONST) */
184 /* symbol management */
186 int v
; /* symbol token */
187 int r
; /* associated register */
188 int c
; /* associated number */
189 CType type
; /* associated type */
190 struct Sym
*next
; /* next related symbol */
191 struct Sym
*prev
; /* prev symbol in stack */
192 struct Sym
*prev_tok
; /* previous symbol for this token */
195 /* section definition */
196 /* XXX: use directly ELF structure for parameters ? */
197 /* special flag to indicate that the section should not be linked to
199 #define SHF_PRIVATE 0x80000000
201 typedef struct Section
{
202 unsigned long data_offset
; /* current data offset */
203 unsigned char *data
; /* section data */
204 unsigned long data_allocated
; /* used for realloc() handling */
205 int sh_name
; /* elf section name (only used during output) */
206 int sh_num
; /* elf section number */
207 int sh_type
; /* elf section type */
208 int sh_flags
; /* elf section flags */
209 int sh_info
; /* elf section info */
210 int sh_addralign
; /* elf section alignment */
211 int sh_entsize
; /* elf entry size */
212 unsigned long sh_size
; /* section size (only used during output) */
213 unsigned long sh_addr
; /* address at which the section is relocated */
214 unsigned long sh_offset
; /* file offset */
215 int nb_hashed_syms
; /* used to resize the hash table */
216 struct Section
*link
; /* link to another section */
217 struct Section
*reloc
; /* corresponding section for relocation, if any */
218 struct Section
*hash
; /* hash table for symbols */
219 struct Section
*next
;
220 char name
[1]; /* section name */
223 typedef struct DLLReference
{
229 /* GNUC attribute definition */
230 typedef struct AttributeDef
{
234 int func_attr
; /* calling convention, exports, ... */
237 /* -------------------------------------------------- */
238 /* gr: wrappers for casting sym->r for other purposes */
246 #define FUNC_CALL(r) (((func_attr_t*)&(r))->func_call)
247 #define FUNC_EXPORT(r) (((func_attr_t*)&(r))->func_export)
248 #define FUNC_ARGS(r) (((func_attr_t*)&(r))->func_args)
249 #define INLINE_DEF(r) (*(int **)&(r))
250 /* -------------------------------------------------- */
252 #define SYM_STRUCT 0x40000000 /* struct/union/enum symbol space */
253 #define SYM_FIELD 0x20000000 /* struct/union field symbol space */
254 #define SYM_FIRST_ANOM 0x10000000 /* first anonymous sym */
256 /* stored in 'Sym.c' field */
257 #define FUNC_NEW 1 /* ansi function prototype */
258 #define FUNC_OLD 2 /* old function prototype */
259 #define FUNC_ELLIPSIS 3 /* ansi function prototype with ... */
261 /* stored in 'Sym.r' field */
262 #define FUNC_CDECL 0 /* standard c call */
263 #define FUNC_STDCALL 1 /* pascal c call */
264 #define FUNC_FASTCALL1 2 /* first param in %eax */
265 #define FUNC_FASTCALL2 3 /* first parameters in %eax, %edx */
266 #define FUNC_FASTCALL3 4 /* first parameter in %eax, %edx, %ecx */
267 #define FUNC_FASTCALLW 5 /* first parameter in %ecx, %edx */
269 /* field 'Sym.t' for macros */
270 #define MACRO_OBJ 0 /* object like macro */
271 #define MACRO_FUNC 1 /* function like macro */
273 /* field 'Sym.r' for C labels */
274 #define LABEL_DEFINED 0 /* label is defined */
275 #define LABEL_FORWARD 1 /* label is forward defined */
276 #define LABEL_DECLARED 2 /* label is declared but never used */
278 /* type_decl() types */
279 #define TYPE_ABSTRACT 1 /* type without variable */
280 #define TYPE_DIRECT 2 /* type with variable */
282 #define IO_BUF_SIZE 8192
284 typedef struct BufferedFile
{
288 int line_num
; /* current line number - here to simplify code */
289 int ifndef_macro
; /* #ifndef macro / #endif search */
290 int ifndef_macro_saved
; /* saved ifndef_macro */
291 int *ifdef_stack_ptr
; /* ifdef_stack value at the start of the file */
292 char inc_type
; /* type of include */
293 char inc_filename
[512]; /* filename specified by the user */
294 char filename
[1024]; /* current filename - here to simplify code */
295 unsigned char buffer
[IO_BUF_SIZE
+ 1]; /* extra size for CH_EOB char */
298 #define CH_EOB '\\' /* end of buffer or '\0' char in file */
299 #define CH_EOF (-1) /* end of file */
301 /* parsing state (used to save parser state to reparse part of the
302 source several times) */
303 typedef struct ParseState
{
310 /* used to record tokens */
311 typedef struct TokenString
{
318 /* include file cache, used to find files faster and also to eliminate
319 inclusion if the include file is protected by #ifndef ... #endif */
320 typedef struct CachedInclude
{
322 int hash_next
; /* -1 if none */
323 char type
; /* '"' or '>' to give include type */
324 char filename
[1]; /* path specified in #include */
327 #define CACHED_INCLUDES_HASH_SIZE 512
330 static struct BufferedFile
*file
;
333 static CString tokcstr
; /* current parsed string, if any */
334 /* additional informations about token */
335 static int tok_flags
;
336 #define TOK_FLAG_BOL 0x0001 /* beginning of line before */
337 #define TOK_FLAG_BOF 0x0002 /* beginning of file before */
338 #define TOK_FLAG_ENDIF 0x0004 /* a endif was found matching starting #ifdef */
339 #define TOK_FLAG_EOF 0x0008 /* end of file */
341 static int *macro_ptr
, *macro_ptr_allocated
;
342 static int *unget_saved_macro_ptr
;
343 static int unget_saved_buffer
[TOK_MAX_SIZE
+ 1];
344 static int unget_buffer_enabled
;
345 static int parse_flags
;
346 #define PARSE_FLAG_PREPROCESS 0x0001 /* activate preprocessing */
347 #define PARSE_FLAG_TOK_NUM 0x0002 /* return numbers instead of TOK_PPNUM */
348 #define PARSE_FLAG_LINEFEED 0x0004 /* line feed is returned as a
349 token. line feed is also
351 #define PARSE_FLAG_ASM_COMMENTS 0x0008 /* '#' can be used for line comment */
353 static Section
*text_section
, *data_section
, *bss_section
; /* predefined sections */
354 static Section
*cur_text_section
; /* current section where function code is
356 #ifdef CONFIG_TCC_ASM
357 static Section
*last_text_section
; /* to handle .previous asm directive */
359 /* bound check related sections */
360 static Section
*bounds_section
; /* contains global data bound description */
361 static Section
*lbounds_section
; /* contains local data bound description */
362 /* symbol sections */
363 static Section
*symtab_section
, *strtab_section
;
366 static Section
*stab_section
, *stabstr_section
;
368 /* loc : local variable index
369 ind : output code index
371 anon_sym: anonymous symbol index
373 static int rsym
, anon_sym
, ind
, loc
;
374 /* expression generation modifiers */
375 static int const_wanted
; /* true if constant wanted */
376 static int nocode_wanted
; /* true if no code generation wanted for an expression */
377 static int global_expr
; /* true if compound literals must be allocated
378 globally (used during initializers parsing */
379 static CType func_vt
; /* current function return type (used by return
382 static int last_line_num
, last_ind
, func_ind
; /* debug last line number and pc */
383 static int tok_ident
;
384 static TokenSym
**table_ident
;
385 static TokenSym
*hash_ident
[TOK_HASH_SIZE
];
386 static char token_buf
[STRING_MAX_SIZE
+ 1];
387 static char *funcname
;
388 static Sym
*global_stack
, *local_stack
;
389 static Sym
*define_stack
;
390 static Sym
*global_label_stack
, *local_label_stack
;
391 /* symbol allocator */
392 #define SYM_POOL_NB (8192 / sizeof(Sym))
393 static Sym
*sym_free_first
;
394 static void **sym_pools
;
395 static int nb_sym_pools
;
397 static SValue vstack
[VSTACK_SIZE
], *vtop
;
398 /* some predefined types */
399 static CType char_pointer_type
, func_old_type
, int_type
;
400 /* true if isid(c) || isnum(c) */
401 static unsigned char isidnum_table
[256-CH_EOF
];
403 /* display some information during compilation */
404 static int verbose
= 0;
406 /* compile with debug symbol (and use them if error during execution) */
407 static int do_debug
= 0;
409 /* compile with built-in memory and bounds checker */
410 static int do_bounds_check
= 0;
412 /* display benchmark infos */
414 static int do_bench
= 0;
416 static int total_lines
;
417 static int total_bytes
;
419 /* use GNU C extensions */
420 static int gnu_ext
= 1;
422 /* use Tiny C extensions */
423 static int tcc_ext
= 1;
425 /* max number of callers shown if error */
426 static int num_callers
= 6;
427 static const char **rt_bound_error_msg
;
429 /* XXX: get rid of this ASAP */
430 static struct TCCState
*tcc_state
;
432 /* give the path of the tcc libraries */
433 static const char *tcc_lib_path
= CONFIG_TCCDIR
;
438 BufferedFile
**include_stack_ptr
;
439 int *ifdef_stack_ptr
;
441 /* include file handling */
442 char **include_paths
;
443 int nb_include_paths
;
444 char **sysinclude_paths
;
445 int nb_sysinclude_paths
;
446 CachedInclude
**cached_includes
;
447 int nb_cached_includes
;
449 char **library_paths
;
450 int nb_library_paths
;
452 /* array of all loaded dlls (including those referenced by loaded
454 DLLReference
**loaded_dlls
;
459 int nb_sections
; /* number of sections, including first dummy section */
464 unsigned long *got_offsets
;
466 /* give the correspondance from symtab indexes to dynsym indexes */
467 int *symtab_to_dynsym
;
469 /* temporary dynamic symbol sections (for dll loading) */
470 Section
*dynsymtab_section
;
471 /* exported dynamic symbol section */
474 int nostdinc
; /* if true, no standard headers are added */
475 int nostdlib
; /* if true, no standard libraries are added */
477 int nocommon
; /* if true, do not use common symbols for .bss data */
479 /* if true, static linking is performed */
482 /* soname as specified on the command line (-soname) */
485 /* if true, all symbols are exported */
488 /* if true, only link in referenced objects from archive */
491 /* address of text section */
492 unsigned long text_addr
;
495 /* output format, see TCC_OUTPUT_FORMAT_xxx */
498 /* C language options */
499 int char_is_unsigned
;
500 int leading_underscore
;
502 /* warning switches */
503 int warn_write_strings
;
504 int warn_unsupported
;
507 int warn_implicit_function_declaration
;
511 void (*error_func
)(void *opaque
, const char *msg
);
512 int error_set_jmp_enabled
;
513 jmp_buf error_jmp_buf
;
516 /* tiny assembler state */
519 /* see include_stack_ptr */
520 BufferedFile
*include_stack
[INCLUDE_STACK_SIZE
];
522 /* see ifdef_stack_ptr */
523 int ifdef_stack
[IFDEF_STACK_SIZE
];
525 /* see cached_includes */
526 int cached_includes_hash
[CACHED_INCLUDES_HASH_SIZE
];
529 int pack_stack
[PACK_STACK_SIZE
];
532 /* output file for preprocessing */
536 /* The current value can be: */
537 #define VT_VALMASK 0x00ff
538 #define VT_CONST 0x00f0 /* constant in vc
539 (must be first non register value) */
540 #define VT_LLOCAL 0x00f1 /* lvalue, offset on stack */
541 #define VT_LOCAL 0x00f2 /* offset on stack */
542 #define VT_CMP 0x00f3 /* the value is stored in processor flags (in vc) */
543 #define VT_JMP 0x00f4 /* value is the consequence of jmp true (even) */
544 #define VT_JMPI 0x00f5 /* value is the consequence of jmp false (odd) */
545 #define VT_LVAL 0x0100 /* var is an lvalue */
546 #define VT_SYM 0x0200 /* a symbol value is added */
547 #define VT_MUSTCAST 0x0400 /* value must be casted to be correct (used for
548 char/short stored in integer registers) */
549 #define VT_MUSTBOUND 0x0800 /* bound checking must be done before
550 dereferencing value */
551 #define VT_BOUNDED 0x8000 /* value is bounded. The address of the
552 bounding function call point is in vc */
553 #define VT_LVAL_BYTE 0x1000 /* lvalue is a byte */
554 #define VT_LVAL_SHORT 0x2000 /* lvalue is a short */
555 #define VT_LVAL_UNSIGNED 0x4000 /* lvalue is unsigned */
556 #define VT_LVAL_TYPE (VT_LVAL_BYTE | VT_LVAL_SHORT | VT_LVAL_UNSIGNED)
559 #define VT_INT 0 /* integer type */
560 #define VT_BYTE 1 /* signed byte type */
561 #define VT_SHORT 2 /* short type */
562 #define VT_VOID 3 /* void type */
563 #define VT_PTR 4 /* pointer */
564 #define VT_ENUM 5 /* enum definition */
565 #define VT_FUNC 6 /* function type */
566 #define VT_STRUCT 7 /* struct/union definition */
567 #define VT_FLOAT 8 /* IEEE float */
568 #define VT_DOUBLE 9 /* IEEE double */
569 #define VT_LDOUBLE 10 /* IEEE long double */
570 #define VT_BOOL 11 /* ISOC99 boolean type */
571 #define VT_LLONG 12 /* 64 bit integer */
572 #define VT_LONG 13 /* long integer (NEVER USED as type, only
574 #define VT_BTYPE 0x000f /* mask for basic type */
575 #define VT_UNSIGNED 0x0010 /* unsigned type */
576 #define VT_ARRAY 0x0020 /* array type (also has VT_PTR) */
577 #define VT_BITFIELD 0x0040 /* bitfield modifier */
578 #define VT_CONSTANT 0x0800 /* const modifier */
579 #define VT_VOLATILE 0x1000 /* volatile modifier */
580 #define VT_SIGNED 0x2000 /* signed type */
583 #define VT_EXTERN 0x00000080 /* extern definition */
584 #define VT_STATIC 0x00000100 /* static variable */
585 #define VT_TYPEDEF 0x00000200 /* typedef definition */
586 #define VT_INLINE 0x00000400 /* inline definition */
588 #define VT_STRUCT_SHIFT 16 /* shift for bitfield shift values */
590 /* type mask (except storage) */
591 #define VT_STORAGE (VT_EXTERN | VT_STATIC | VT_TYPEDEF | VT_INLINE)
592 #define VT_TYPE (~(VT_STORAGE))
596 /* warning: the following compare tokens depend on i386 asm code */
603 #define TOK_Nset 0x98
604 #define TOK_Nclear 0x99
610 #define TOK_LAND 0xa0
614 #define TOK_MID 0xa3 /* inc/dec, to void constant */
616 #define TOK_UDIV 0xb0 /* unsigned division */
617 #define TOK_UMOD 0xb1 /* unsigned modulo */
618 #define TOK_PDIV 0xb2 /* fast division with undefined rounding for pointers */
619 #define TOK_CINT 0xb3 /* number in tokc */
620 #define TOK_CCHAR 0xb4 /* char constant in tokc */
621 #define TOK_STR 0xb5 /* pointer to string in tokc */
622 #define TOK_TWOSHARPS 0xb6 /* ## preprocessing token */
623 #define TOK_LCHAR 0xb7
624 #define TOK_LSTR 0xb8
625 #define TOK_CFLOAT 0xb9 /* float constant */
626 #define TOK_LINENUM 0xba /* line number info */
627 #define TOK_CDOUBLE 0xc0 /* double constant */
628 #define TOK_CLDOUBLE 0xc1 /* long double constant */
629 #define TOK_UMULL 0xc2 /* unsigned 32x32 -> 64 mul */
630 #define TOK_ADDC1 0xc3 /* add with carry generation */
631 #define TOK_ADDC2 0xc4 /* add with carry use */
632 #define TOK_SUBC1 0xc5 /* add with carry generation */
633 #define TOK_SUBC2 0xc6 /* add with carry use */
634 #define TOK_CUINT 0xc8 /* unsigned int constant */
635 #define TOK_CLLONG 0xc9 /* long long constant */
636 #define TOK_CULLONG 0xca /* unsigned long long constant */
637 #define TOK_ARROW 0xcb
638 #define TOK_DOTS 0xcc /* three dots */
639 #define TOK_SHR 0xcd /* unsigned shift right */
640 #define TOK_PPNUM 0xce /* preprocessor number */
642 #define TOK_SHL 0x01 /* shift left */
643 #define TOK_SAR 0x02 /* signed shift right */
645 /* assignement operators : normal operator or 0x80 */
646 #define TOK_A_MOD 0xa5
647 #define TOK_A_AND 0xa6
648 #define TOK_A_MUL 0xaa
649 #define TOK_A_ADD 0xab
650 #define TOK_A_SUB 0xad
651 #define TOK_A_DIV 0xaf
652 #define TOK_A_XOR 0xde
653 #define TOK_A_OR 0xfc
654 #define TOK_A_SHL 0x81
655 #define TOK_A_SAR 0x82
658 #define offsetof(type, field) ((size_t) &((type *)0)->field)
662 #define countof(tab) (sizeof(tab) / sizeof((tab)[0]))
665 /* WARNING: the content of this string encodes token numbers */
666 static char tok_two_chars
[] = "<=\236>=\235!=\225&&\240||\241++\244--\242==\224<<\1>>\2+=\253-=\255*=\252/=\257%=\245&=\246^=\336|=\374->\313..\250##\266";
668 #define TOK_EOF (-1) /* end of file */
669 #define TOK_LINEFEED 10 /* line feed */
671 /* all identificators and strings have token above that */
672 #define TOK_IDENT 256
674 /* only used for i386 asm opcodes definitions */
675 #define DEF_ASM(x) DEF(TOK_ASM_ ## x, #x)
678 DEF(TOK_ASM_ ## x ## b, #x "b") \
679 DEF(TOK_ASM_ ## x ## w, #x "w") \
680 DEF(TOK_ASM_ ## x ## l, #x "l") \
681 DEF(TOK_ASM_ ## x, #x)
684 DEF(TOK_ASM_ ## x ## w, #x "w") \
685 DEF(TOK_ASM_ ## x ## l, #x "l") \
686 DEF(TOK_ASM_ ## x, #x)
689 DEF(TOK_ASM_ ## f ## x ## s, "f" #x "s") \
690 DEF(TOK_ASM_ ## fi ## x ## l, "fi" #x "l") \
691 DEF(TOK_ASM_ ## f ## x ## l, "f" #x "l") \
692 DEF(TOK_ASM_ ## fi ## x ## s, "fi" #x "s")
695 DEF(TOK_ASM_ ## f ## x, "f" #x ) \
696 DEF(TOK_ASM_ ## f ## x ## p, "f" #x "p") \
699 #define DEF_ASMTEST(x) \
731 #define TOK_ASM_int TOK_INT
734 TOK_LAST
= TOK_IDENT
- 1,
735 #define DEF(id, str) id,
740 static const char tcc_keywords
[] =
741 #define DEF(id, str) str "\0"
746 #define TOK_UIDENT TOK_DEFINE
749 #define snprintf _snprintf
750 #define vsnprintf _vsnprintf
752 #define strtold (long double)strtod
753 #define strtof (float)strtod
754 #define strtoll (long long)strtol
756 #elif defined(TCC_UCLIBC) || defined(__FreeBSD__) || defined(__DragonFly__) \
757 || defined(__OpenBSD__)
758 /* currently incorrect */
759 long double strtold(const char *nptr
, char **endptr
)
761 return (long double)strtod(nptr
, endptr
);
763 float strtof(const char *nptr
, char **endptr
)
765 return (float)strtod(nptr
, endptr
);
768 /* XXX: need to define this to use them in non ISOC99 context */
769 extern float strtof (const char *__nptr
, char **__endptr
);
770 extern long double strtold (const char *__nptr
, char **__endptr
);
773 static char *pstrcpy(char *buf
, int buf_size
, const char *s
);
774 static char *pstrcat(char *buf
, int buf_size
, const char *s
);
775 static char *tcc_basename(const char *name
);
776 static char *tcc_fileextension (const char *p
);
778 static void next(void);
779 static void next_nomacro(void);
780 static void parse_expr_type(CType
*type
);
781 static void expr_type(CType
*type
);
782 static void unary_type(CType
*type
);
783 static void block(int *bsym
, int *csym
, int *case_sym
, int *def_sym
,
784 int case_reg
, int is_expr
);
785 static int expr_const(void);
786 static void expr_eq(void);
787 static void gexpr(void);
788 static void gen_inline_functions(void);
789 static void decl(int l
);
790 static void decl_initializer(CType
*type
, Section
*sec
, unsigned long c
,
791 int first
, int size_only
);
792 static void decl_initializer_alloc(CType
*type
, AttributeDef
*ad
, int r
,
793 int has_init
, int v
, int scope
);
795 void gv2(int rc1
, int rc2
);
796 void move_reg(int r
, int s
);
797 void save_regs(int n
);
798 void save_reg(int r
);
803 int get_reg_ex(int rc
,int rc2
);
806 struct macro_level
*prev
;
810 static void macro_subst(TokenString
*tok_str
, Sym
**nested_list
,
811 const int *macro_str
, struct macro_level
**can_read_stream
);
813 void force_charshort_cast(int t
);
814 static void gen_cast(CType
*type
);
816 static Sym
*sym_find(int v
);
817 static Sym
*sym_push(int v
, CType
*type
, int r
, int c
);
820 static int type_size(CType
*type
, int *a
);
821 static inline CType
*pointed_type(CType
*type
);
822 static int pointed_size(CType
*type
);
823 static int lvalue_type(int t
);
824 static int parse_btype(CType
*type
, AttributeDef
*ad
);
825 static void type_decl(CType
*type
, AttributeDef
*ad
, int *v
, int td
);
826 static int compare_types(CType
*type1
, CType
*type2
, int unqualified
);
827 static int is_compatible_types(CType
*type1
, CType
*type2
);
828 static int is_compatible_parameter_types(CType
*type1
, CType
*type2
);
830 int ieee_finite(double d
);
831 void error(const char *fmt
, ...);
835 void lexpand_nr(void);
836 static void vpush_global_sym(CType
*type
, int v
);
837 void vset(CType
*type
, int r
, int v
);
838 void type_to_str(char *buf
, int buf_size
,
839 CType
*type
, const char *varstr
);
840 char *get_tok_str(int v
, CValue
*cv
);
841 static Sym
*get_sym_ref(CType
*type
, Section
*sec
,
842 unsigned long offset
, unsigned long size
);
843 static Sym
*external_global_sym(int v
, CType
*type
, int r
);
845 /* section generation */
846 static void section_realloc(Section
*sec
, unsigned long new_size
);
847 static void *section_ptr_add(Section
*sec
, unsigned long size
);
848 static void put_extern_sym(Sym
*sym
, Section
*section
,
849 unsigned long value
, unsigned long size
);
850 static void greloc(Section
*s
, Sym
*sym
, unsigned long addr
, int type
);
851 static int put_elf_str(Section
*s
, const char *sym
);
852 static int put_elf_sym(Section
*s
,
853 unsigned long value
, unsigned long size
,
854 int info
, int other
, int shndx
, const char *name
);
855 static int add_elf_sym(Section
*s
, unsigned long value
, unsigned long size
,
856 int info
, int other
, int sh_num
, const char *name
);
857 static void put_elf_reloc(Section
*symtab
, Section
*s
, unsigned long offset
,
858 int type
, int symbol
);
859 static void put_stabs(const char *str
, int type
, int other
, int desc
,
860 unsigned long value
);
861 static void put_stabs_r(const char *str
, int type
, int other
, int desc
,
862 unsigned long value
, Section
*sec
, int sym_index
);
863 static void put_stabn(int type
, int other
, int desc
, int value
);
864 static void put_stabd(int type
, int other
, int desc
);
865 static int tcc_add_dll(TCCState
*s
, const char *filename
, int flags
);
867 #define AFF_PRINT_ERROR 0x0001 /* print error if file not found */
868 #define AFF_REFERENCED_DLL 0x0002 /* load a referenced dll from another dll */
869 #define AFF_PREPROCESS 0x0004 /* preprocess file */
870 static int tcc_add_file_internal(TCCState
*s
, const char *filename
, int flags
);
873 int tcc_output_coff(TCCState
*s1
, FILE *f
);
876 void *resolve_sym(TCCState
*s1
, const char *sym
, int type
);
877 int pe_load_def_file(struct TCCState
*s1
, int fd
);
878 int pe_test_res_file(void *v
, int size
);
879 int pe_load_res_file(struct TCCState
*s1
, int fd
);
880 void pe_add_runtime(struct TCCState
*s1
);
881 void pe_guess_outfile(char *objfilename
, int output_type
);
882 int pe_output_file(struct TCCState
*s1
, const char *filename
);
886 #ifdef CONFIG_TCC_ASM
888 typedef struct ExprValue
{
893 #define MAX_ASM_OPERANDS 30
895 typedef struct ASMOperand
{
896 int id
; /* GCC 3 optionnal identifier (0 if number only supported */
898 char asm_str
[16]; /* computed asm string for operand */
899 SValue
*vt
; /* C value of the expression */
900 int ref_index
; /* if >= 0, gives reference to a output constraint */
901 int input_index
; /* if >= 0, gives reference to an input constraint */
902 int priority
; /* priority, used to assign registers */
903 int reg
; /* if >= 0, register number used for this operand */
904 int is_llong
; /* true if double register value */
905 int is_memory
; /* true if memory operand */
906 int is_rw
; /* for '+' modifier */
909 static void asm_expr(TCCState
*s1
, ExprValue
*pe
);
910 static int asm_int_expr(TCCState
*s1
);
911 static int find_constraint(ASMOperand
*operands
, int nb_operands
,
912 const char *name
, const char **pp
);
914 static int tcc_assemble(TCCState
*s1
, int do_preprocess
);
918 static void asm_instr(void);
919 static void asm_global_instr(void);
921 /* true if float/double/long double type */
922 static inline int is_float(int t
)
926 return bt
== VT_LDOUBLE
|| bt
== VT_DOUBLE
|| bt
== VT_FLOAT
;
929 #ifdef TCC_TARGET_I386
930 #include "i386-gen.c"
933 #ifdef TCC_TARGET_ARM
937 #ifdef TCC_TARGET_C67
941 #ifdef CONFIG_TCC_STATIC
943 #define RTLD_LAZY 0x001
944 #define RTLD_NOW 0x002
945 #define RTLD_GLOBAL 0x100
946 #define RTLD_DEFAULT NULL
948 /* dummy function for profiling */
949 void *dlopen(const char *filename
, int flag
)
954 const char *dlerror(void)
959 typedef struct TCCSyms
{
964 #define TCCSYM(a) { #a, &a, },
966 /* add the symbol you want here if no dynamic linking is done */
967 static TCCSyms tcc_syms
[] = {
968 #if !defined(CONFIG_TCCBOOT)
977 void *resolve_sym(TCCState
*s1
, const char *symbol
, int type
)
981 while (p
->str
!= NULL
) {
982 if (!strcmp(p
->str
, symbol
))
989 #elif !defined(_WIN32)
993 void *resolve_sym(TCCState
*s1
, const char *sym
, int type
)
995 return dlsym(RTLD_DEFAULT
, sym
);
1000 /********************************************************/
1002 /* we use our own 'finite' function to avoid potential problems with
1003 non standard math libs */
1004 /* XXX: endianness dependent */
1005 int ieee_finite(double d
)
1008 return ((unsigned)((p
[1] | 0x800fffff) + 1)) >> 31;
1011 /* copy a string and truncate it. */
1012 static char *pstrcpy(char *buf
, int buf_size
, const char *s
)
1019 q_end
= buf
+ buf_size
- 1;
1031 /* strcat and truncate. */
1032 static char *pstrcat(char *buf
, int buf_size
, const char *s
)
1037 pstrcpy(buf
+ len
, buf_size
- len
, s
);
1042 static int strstart(const char *str
, const char *val
, const char **ptr
)
1047 while (*q
!= '\0') {
1059 /* extract the basename of a file */
1060 static char *tcc_basename(const char *name
)
1062 char *p
= strchr(name
, 0);
1073 static char *tcc_fileextension (const char *name
)
1075 char *b
= tcc_basename(name
);
1076 char *e
= strrchr(b
, '.');
1077 return e
? e
: strchr(b
, 0);
1081 char *normalize_slashes(char *path
)
1084 for (p
= path
; *p
; ++p
)
1090 char *w32_tcc_lib_path(void)
1092 /* on win32, we suppose the lib and includes are at the location
1094 char path
[1024], *p
;
1095 GetModuleFileNameA(NULL
, path
, sizeof path
);
1096 p
= tcc_basename(normalize_slashes(strlwr(path
)));
1097 if (p
- 5 > path
&& 0 == strncmp(p
- 5, "/bin/", 5))
1102 return strdup(path
);
1106 void set_pages_executable(void *ptr
, unsigned long length
)
1109 unsigned long old_protect
;
1110 VirtualProtect(ptr
, length
, PAGE_EXECUTE_READWRITE
, &old_protect
);
1112 unsigned long start
, end
;
1113 start
= (unsigned long)ptr
& ~(PAGESIZE
- 1);
1114 end
= (unsigned long)ptr
+ length
;
1115 end
= (end
+ PAGESIZE
- 1) & ~(PAGESIZE
- 1);
1116 mprotect((void *)start
, end
- start
, PROT_READ
| PROT_WRITE
| PROT_EXEC
);
1120 /* memory management */
1124 unsigned malloc_usable_size(void*);
1127 static inline void tcc_free(void *ptr
)
1130 mem_cur_size
-= malloc_usable_size(ptr
);
1135 static void *tcc_malloc(unsigned long size
)
1140 error("memory full");
1142 mem_cur_size
+= malloc_usable_size(ptr
);
1143 if (mem_cur_size
> mem_max_size
)
1144 mem_max_size
= mem_cur_size
;
1149 static void *tcc_mallocz(unsigned long size
)
1152 ptr
= tcc_malloc(size
);
1153 memset(ptr
, 0, size
);
1157 static inline void *tcc_realloc(void *ptr
, unsigned long size
)
1161 mem_cur_size
-= malloc_usable_size(ptr
);
1163 ptr1
= realloc(ptr
, size
);
1165 /* NOTE: count not correct if alloc error, but not critical */
1166 mem_cur_size
+= malloc_usable_size(ptr1
);
1167 if (mem_cur_size
> mem_max_size
)
1168 mem_max_size
= mem_cur_size
;
1173 static char *tcc_strdup(const char *str
)
1176 ptr
= tcc_malloc(strlen(str
) + 1);
1181 #define free(p) use_tcc_free(p)
1182 #define malloc(s) use_tcc_malloc(s)
1183 #define realloc(p, s) use_tcc_realloc(p, s)
1185 static void dynarray_add(void ***ptab
, int *nb_ptr
, void *data
)
1192 /* every power of two we double array size */
1193 if ((nb
& (nb
- 1)) == 0) {
1198 pp
= tcc_realloc(pp
, nb_alloc
* sizeof(void *));
1200 error("memory full");
1207 static void dynarray_reset(void *pp
, int *n
)
1210 for (p
= *(void***)pp
; *n
; ++p
, --*n
)
1213 tcc_free(*(void**)pp
);
1217 /* symbol allocator */
1218 static Sym
*__sym_malloc(void)
1220 Sym
*sym_pool
, *sym
, *last_sym
;
1223 sym_pool
= tcc_malloc(SYM_POOL_NB
* sizeof(Sym
));
1224 dynarray_add(&sym_pools
, &nb_sym_pools
, sym_pool
);
1226 last_sym
= sym_free_first
;
1228 for(i
= 0; i
< SYM_POOL_NB
; i
++) {
1229 sym
->next
= last_sym
;
1233 sym_free_first
= last_sym
;
1237 static inline Sym
*sym_malloc(void)
1240 sym
= sym_free_first
;
1242 sym
= __sym_malloc();
1243 sym_free_first
= sym
->next
;
1247 static inline void sym_free(Sym
*sym
)
1249 sym
->next
= sym_free_first
;
1250 sym_free_first
= sym
;
1253 Section
*new_section(TCCState
*s1
, const char *name
, int sh_type
, int sh_flags
)
1257 sec
= tcc_mallocz(sizeof(Section
) + strlen(name
));
1258 strcpy(sec
->name
, name
);
1259 sec
->sh_type
= sh_type
;
1260 sec
->sh_flags
= sh_flags
;
1267 sec
->sh_addralign
= 4;
1270 sec
->sh_addralign
= 1;
1273 sec
->sh_addralign
= 32; /* default conservative alignment */
1277 /* only add section if not private */
1278 if (!(sh_flags
& SHF_PRIVATE
)) {
1279 sec
->sh_num
= s1
->nb_sections
;
1280 dynarray_add((void ***)&s1
->sections
, &s1
->nb_sections
, sec
);
1285 static void free_section(Section
*s
)
1287 if (s
->link
&& (s
->link
->sh_flags
& SHF_PRIVATE
))
1288 free_section(s
->link
);
1289 if (s
->hash
&& (s
->link
->sh_flags
& SHF_PRIVATE
))
1290 s
->hash
->link
= NULL
, free_section(s
->hash
);
1295 /* realloc section and set its content to zero */
1296 static void section_realloc(Section
*sec
, unsigned long new_size
)
1299 unsigned char *data
;
1301 size
= sec
->data_allocated
;
1304 while (size
< new_size
)
1306 data
= tcc_realloc(sec
->data
, size
);
1308 error("memory full");
1309 memset(data
+ sec
->data_allocated
, 0, size
- sec
->data_allocated
);
1311 sec
->data_allocated
= size
;
1314 /* reserve at least 'size' bytes in section 'sec' from
1315 sec->data_offset. */
1316 static void *section_ptr_add(Section
*sec
, unsigned long size
)
1318 unsigned long offset
, offset1
;
1320 offset
= sec
->data_offset
;
1321 offset1
= offset
+ size
;
1322 if (offset1
> sec
->data_allocated
)
1323 section_realloc(sec
, offset1
);
1324 sec
->data_offset
= offset1
;
1325 return sec
->data
+ offset
;
1328 /* return a reference to a section, and create it if it does not
1330 Section
*find_section(TCCState
*s1
, const char *name
)
1334 for(i
= 1; i
< s1
->nb_sections
; i
++) {
1335 sec
= s1
->sections
[i
];
1336 if (!strcmp(name
, sec
->name
))
1339 /* sections are created as PROGBITS */
1340 return new_section(s1
, name
, SHT_PROGBITS
, SHF_ALLOC
);
1343 #define SECTION_ABS ((void *)1)
1345 /* update sym->c so that it points to an external symbol in section
1346 'section' with value 'value' */
1347 static void put_extern_sym2(Sym
*sym
, Section
*section
,
1348 unsigned long value
, unsigned long size
,
1349 int can_add_underscore
)
1351 int sym_type
, sym_bind
, sh_num
, info
, other
, attr
;
1356 if (section
== NULL
)
1358 else if (section
== SECTION_ABS
)
1361 sh_num
= section
->sh_num
;
1365 if ((sym
->type
.t
& VT_BTYPE
) == VT_FUNC
) {
1366 sym_type
= STT_FUNC
;
1367 #ifdef TCC_TARGET_PE
1369 attr
= sym
->type
.ref
->r
;
1370 if (FUNC_EXPORT(attr
))
1372 if (FUNC_CALL(attr
) == FUNC_STDCALL
)
1376 sym_type
= STT_OBJECT
;
1379 if (sym
->type
.t
& VT_STATIC
)
1380 sym_bind
= STB_LOCAL
;
1382 sym_bind
= STB_GLOBAL
;
1385 name
= get_tok_str(sym
->v
, NULL
);
1386 #ifdef CONFIG_TCC_BCHECK
1387 if (do_bounds_check
) {
1390 /* XXX: avoid doing that for statics ? */
1391 /* if bound checking is activated, we change some function
1392 names by adding the "__bound" prefix */
1395 /* XXX: we rely only on malloc hooks */
1408 strcpy(buf
, "__bound_");
1416 #ifdef TCC_TARGET_PE
1417 if ((other
& 2) && can_add_underscore
) {
1418 sprintf(buf1
, "_%s@%d", name
, FUNC_ARGS(attr
));
1422 if (tcc_state
->leading_underscore
&& can_add_underscore
) {
1424 pstrcpy(buf1
+ 1, sizeof(buf1
) - 1, name
);
1427 info
= ELF32_ST_INFO(sym_bind
, sym_type
);
1428 sym
->c
= add_elf_sym(symtab_section
, value
, size
, info
, other
, sh_num
, name
);
1430 esym
= &((Elf32_Sym
*)symtab_section
->data
)[sym
->c
];
1431 esym
->st_value
= value
;
1432 esym
->st_size
= size
;
1433 esym
->st_shndx
= sh_num
;
1434 esym
->st_other
|= other
;
1438 static void put_extern_sym(Sym
*sym
, Section
*section
,
1439 unsigned long value
, unsigned long size
)
1441 put_extern_sym2(sym
, section
, value
, size
, 1);
1444 /* add a new relocation entry to symbol 'sym' in section 's' */
1445 static void greloc(Section
*s
, Sym
*sym
, unsigned long offset
, int type
)
1448 put_extern_sym(sym
, NULL
, 0, 0);
1449 /* now we can add ELF relocation info */
1450 put_elf_reloc(symtab_section
, s
, offset
, type
, sym
->c
);
1453 static inline int isid(int c
)
1455 return (c
>= 'a' && c
<= 'z') ||
1456 (c
>= 'A' && c
<= 'Z') ||
1460 static inline int isnum(int c
)
1462 return c
>= '0' && c
<= '9';
1465 static inline int isoct(int c
)
1467 return c
>= '0' && c
<= '7';
1470 static inline int toup(int c
)
1472 if (c
>= 'a' && c
<= 'z')
1473 return c
- 'a' + 'A';
1478 static void strcat_vprintf(char *buf
, int buf_size
, const char *fmt
, va_list ap
)
1482 vsnprintf(buf
+ len
, buf_size
- len
, fmt
, ap
);
1485 static void strcat_printf(char *buf
, int buf_size
, const char *fmt
, ...)
1489 strcat_vprintf(buf
, buf_size
, fmt
, ap
);
1493 void error1(TCCState
*s1
, int is_warning
, const char *fmt
, va_list ap
)
1500 for(f
= s1
->include_stack
; f
< s1
->include_stack_ptr
; f
++)
1501 strcat_printf(buf
, sizeof(buf
), "In file included from %s:%d:\n",
1502 (*f
)->filename
, (*f
)->line_num
);
1503 if (file
->line_num
> 0) {
1504 strcat_printf(buf
, sizeof(buf
),
1505 "%s:%d: ", file
->filename
, file
->line_num
);
1507 strcat_printf(buf
, sizeof(buf
),
1508 "%s: ", file
->filename
);
1511 strcat_printf(buf
, sizeof(buf
),
1515 strcat_printf(buf
, sizeof(buf
), "warning: ");
1516 strcat_vprintf(buf
, sizeof(buf
), fmt
, ap
);
1518 if (!s1
->error_func
) {
1519 /* default case: stderr */
1520 fprintf(stderr
, "%s\n", buf
);
1522 s1
->error_func(s1
->error_opaque
, buf
);
1524 if (!is_warning
|| s1
->warn_error
)
1529 void tcc_set_error_func(TCCState
*s
, void *error_opaque
,
1530 void (*error_func
)(void *opaque
, const char *msg
))
1532 s
->error_opaque
= error_opaque
;
1533 s
->error_func
= error_func
;
1537 /* error without aborting current compilation */
1538 void error_noabort(const char *fmt
, ...)
1540 TCCState
*s1
= tcc_state
;
1544 error1(s1
, 0, fmt
, ap
);
1548 void error(const char *fmt
, ...)
1550 TCCState
*s1
= tcc_state
;
1554 error1(s1
, 0, fmt
, ap
);
1556 /* better than nothing: in some cases, we accept to handle errors */
1557 if (s1
->error_set_jmp_enabled
) {
1558 longjmp(s1
->error_jmp_buf
, 1);
1560 /* XXX: eliminate this someday */
1565 void expect(const char *msg
)
1567 error("%s expected", msg
);
1570 void warning(const char *fmt
, ...)
1572 TCCState
*s1
= tcc_state
;
1579 error1(s1
, 1, fmt
, ap
);
1586 error("'%c' expected", c
);
1590 static void test_lvalue(void)
1592 if (!(vtop
->r
& VT_LVAL
))
1596 /* allocate a new token */
1597 static TokenSym
*tok_alloc_new(TokenSym
**pts
, const char *str
, int len
)
1599 TokenSym
*ts
, **ptable
;
1602 if (tok_ident
>= SYM_FIRST_ANOM
)
1603 error("memory full");
1605 /* expand token table if needed */
1606 i
= tok_ident
- TOK_IDENT
;
1607 if ((i
% TOK_ALLOC_INCR
) == 0) {
1608 ptable
= tcc_realloc(table_ident
, (i
+ TOK_ALLOC_INCR
) * sizeof(TokenSym
*));
1610 error("memory full");
1611 table_ident
= ptable
;
1614 ts
= tcc_malloc(sizeof(TokenSym
) + len
);
1615 table_ident
[i
] = ts
;
1616 ts
->tok
= tok_ident
++;
1617 ts
->sym_define
= NULL
;
1618 ts
->sym_label
= NULL
;
1619 ts
->sym_struct
= NULL
;
1620 ts
->sym_identifier
= NULL
;
1622 ts
->hash_next
= NULL
;
1623 memcpy(ts
->str
, str
, len
);
1624 ts
->str
[len
] = '\0';
1629 #define TOK_HASH_INIT 1
1630 #define TOK_HASH_FUNC(h, c) ((h) * 263 + (c))
1632 /* find a token and add it if not found */
1633 static TokenSym
*tok_alloc(const char *str
, int len
)
1635 TokenSym
*ts
, **pts
;
1641 h
= TOK_HASH_FUNC(h
, ((unsigned char *)str
)[i
]);
1642 h
&= (TOK_HASH_SIZE
- 1);
1644 pts
= &hash_ident
[h
];
1649 if (ts
->len
== len
&& !memcmp(ts
->str
, str
, len
))
1651 pts
= &(ts
->hash_next
);
1653 return tok_alloc_new(pts
, str
, len
);
1656 /* CString handling */
1658 static void cstr_realloc(CString
*cstr
, int new_size
)
1663 size
= cstr
->size_allocated
;
1665 size
= 8; /* no need to allocate a too small first string */
1666 while (size
< new_size
)
1668 data
= tcc_realloc(cstr
->data_allocated
, size
);
1670 error("memory full");
1671 cstr
->data_allocated
= data
;
1672 cstr
->size_allocated
= size
;
1677 static inline void cstr_ccat(CString
*cstr
, int ch
)
1680 size
= cstr
->size
+ 1;
1681 if (size
> cstr
->size_allocated
)
1682 cstr_realloc(cstr
, size
);
1683 ((unsigned char *)cstr
->data
)[size
- 1] = ch
;
1687 static void cstr_cat(CString
*cstr
, const char *str
)
1699 /* add a wide char */
1700 static void cstr_wccat(CString
*cstr
, int ch
)
1703 size
= cstr
->size
+ sizeof(nwchar_t
);
1704 if (size
> cstr
->size_allocated
)
1705 cstr_realloc(cstr
, size
);
1706 *(nwchar_t
*)(((unsigned char *)cstr
->data
) + size
- sizeof(nwchar_t
)) = ch
;
1710 static void cstr_new(CString
*cstr
)
1712 memset(cstr
, 0, sizeof(CString
));
1715 /* free string and reset it to NULL */
1716 static void cstr_free(CString
*cstr
)
1718 tcc_free(cstr
->data_allocated
);
1722 #define cstr_reset(cstr) cstr_free(cstr)
1724 /* XXX: unicode ? */
1725 static void add_char(CString
*cstr
, int c
)
1727 if (c
== '\'' || c
== '\"' || c
== '\\') {
1728 /* XXX: could be more precise if char or string */
1729 cstr_ccat(cstr
, '\\');
1731 if (c
>= 32 && c
<= 126) {
1734 cstr_ccat(cstr
, '\\');
1736 cstr_ccat(cstr
, 'n');
1738 cstr_ccat(cstr
, '0' + ((c
>> 6) & 7));
1739 cstr_ccat(cstr
, '0' + ((c
>> 3) & 7));
1740 cstr_ccat(cstr
, '0' + (c
& 7));
1745 /* XXX: buffer overflow */
1746 /* XXX: float tokens */
1747 char *get_tok_str(int v
, CValue
*cv
)
1749 static char buf
[STRING_MAX_SIZE
+ 1];
1750 static CString cstr_buf
;
1756 /* NOTE: to go faster, we give a fixed buffer for small strings */
1757 cstr_reset(&cstr_buf
);
1758 cstr_buf
.data
= buf
;
1759 cstr_buf
.size_allocated
= sizeof(buf
);
1765 /* XXX: not quite exact, but only useful for testing */
1766 sprintf(p
, "%u", cv
->ui
);
1770 /* XXX: not quite exact, but only useful for testing */
1771 sprintf(p
, "%Lu", cv
->ull
);
1775 cstr_ccat(&cstr_buf
, '\'');
1776 add_char(&cstr_buf
, cv
->i
);
1777 cstr_ccat(&cstr_buf
, '\'');
1778 cstr_ccat(&cstr_buf
, '\0');
1782 len
= cstr
->size
- 1;
1784 add_char(&cstr_buf
, ((unsigned char *)cstr
->data
)[i
]);
1785 cstr_ccat(&cstr_buf
, '\0');
1790 cstr_ccat(&cstr_buf
, '\"');
1792 len
= cstr
->size
- 1;
1794 add_char(&cstr_buf
, ((unsigned char *)cstr
->data
)[i
]);
1796 len
= (cstr
->size
/ sizeof(nwchar_t
)) - 1;
1798 add_char(&cstr_buf
, ((nwchar_t
*)cstr
->data
)[i
]);
1800 cstr_ccat(&cstr_buf
, '\"');
1801 cstr_ccat(&cstr_buf
, '\0');
1810 return strcpy(p
, "...");
1812 return strcpy(p
, "<<=");
1814 return strcpy(p
, ">>=");
1816 if (v
< TOK_IDENT
) {
1817 /* search in two bytes table */
1831 } else if (v
< tok_ident
) {
1832 return table_ident
[v
- TOK_IDENT
]->str
;
1833 } else if (v
>= SYM_FIRST_ANOM
) {
1834 /* special name for anonymous symbol */
1835 sprintf(p
, "L.%u", v
- SYM_FIRST_ANOM
);
1837 /* should never happen */
1842 return cstr_buf
.data
;
1845 /* push, without hashing */
1846 static Sym
*sym_push2(Sym
**ps
, int v
, int t
, int c
)
1860 /* find a symbol and return its associated structure. 's' is the top
1861 of the symbol stack */
1862 static Sym
*sym_find2(Sym
*s
, int v
)
1872 /* structure lookup */
1873 static inline Sym
*struct_find(int v
)
1876 if ((unsigned)v
>= (unsigned)(tok_ident
- TOK_IDENT
))
1878 return table_ident
[v
]->sym_struct
;
1881 /* find an identifier */
1882 static inline Sym
*sym_find(int v
)
1885 if ((unsigned)v
>= (unsigned)(tok_ident
- TOK_IDENT
))
1887 return table_ident
[v
]->sym_identifier
;
1890 /* push a given symbol on the symbol stack */
1891 static Sym
*sym_push(int v
, CType
*type
, int r
, int c
)
1900 s
= sym_push2(ps
, v
, type
->t
, c
);
1901 s
->type
.ref
= type
->ref
;
1903 /* don't record fields or anonymous symbols */
1905 if (!(v
& SYM_FIELD
) && (v
& ~SYM_STRUCT
) < SYM_FIRST_ANOM
) {
1906 /* record symbol in token array */
1907 ts
= table_ident
[(v
& ~SYM_STRUCT
) - TOK_IDENT
];
1909 ps
= &ts
->sym_struct
;
1911 ps
= &ts
->sym_identifier
;
1918 /* push a global identifier */
1919 static Sym
*global_identifier_push(int v
, int t
, int c
)
1922 s
= sym_push2(&global_stack
, v
, t
, c
);
1923 /* don't record anonymous symbol */
1924 if (v
< SYM_FIRST_ANOM
) {
1925 ps
= &table_ident
[v
- TOK_IDENT
]->sym_identifier
;
1926 /* modify the top most local identifier, so that
1927 sym_identifier will point to 's' when popped */
1929 ps
= &(*ps
)->prev_tok
;
1936 /* pop symbols until top reaches 'b' */
1937 static void sym_pop(Sym
**ptop
, Sym
*b
)
1947 /* remove symbol in token array */
1949 if (!(v
& SYM_FIELD
) && (v
& ~SYM_STRUCT
) < SYM_FIRST_ANOM
) {
1950 ts
= table_ident
[(v
& ~SYM_STRUCT
) - TOK_IDENT
];
1952 ps
= &ts
->sym_struct
;
1954 ps
= &ts
->sym_identifier
;
1965 BufferedFile
*tcc_open(TCCState
*s1
, const char *filename
)
1970 if (strcmp(filename
, "-") == 0)
1971 fd
= 0, filename
= "stdin";
1973 fd
= open(filename
, O_RDONLY
| O_BINARY
);
1974 if ((verbose
== 2 && fd
>= 0) || verbose
== 3)
1975 printf("%s %*s%s\n", fd
< 0 ? "nf":"->",
1976 (s1
->include_stack_ptr
- s1
->include_stack
), "", filename
);
1979 bf
= tcc_malloc(sizeof(BufferedFile
));
1981 bf
->buf_ptr
= bf
->buffer
;
1982 bf
->buf_end
= bf
->buffer
;
1983 bf
->buffer
[0] = CH_EOB
; /* put eob symbol */
1984 pstrcpy(bf
->filename
, sizeof(bf
->filename
), filename
);
1986 normalize_slashes(bf
->filename
);
1989 bf
->ifndef_macro
= 0;
1990 bf
->ifdef_stack_ptr
= s1
->ifdef_stack_ptr
;
1991 // printf("opening '%s'\n", filename);
1995 void tcc_close(BufferedFile
*bf
)
1997 total_lines
+= bf
->line_num
;
2002 /* fill input buffer and peek next char */
2003 static int tcc_peekc_slow(BufferedFile
*bf
)
2006 /* only tries to read if really end of buffer */
2007 if (bf
->buf_ptr
>= bf
->buf_end
) {
2009 #if defined(PARSE_DEBUG)
2014 len
= read(bf
->fd
, bf
->buffer
, len
);
2021 bf
->buf_ptr
= bf
->buffer
;
2022 bf
->buf_end
= bf
->buffer
+ len
;
2023 *bf
->buf_end
= CH_EOB
;
2025 if (bf
->buf_ptr
< bf
->buf_end
) {
2026 return bf
->buf_ptr
[0];
2028 bf
->buf_ptr
= bf
->buf_end
;
2033 /* return the current character, handling end of block if necessary
2035 static int handle_eob(void)
2037 return tcc_peekc_slow(file
);
2040 /* read next char from current input file and handle end of input buffer */
2041 static inline void inp(void)
2043 ch
= *(++(file
->buf_ptr
));
2044 /* end of buffer/file handling */
2049 /* handle '\[\r]\n' */
2050 static int handle_stray_noerror(void)
2052 while (ch
== '\\') {
2057 } else if (ch
== '\r') {
2071 static void handle_stray(void)
2073 if (handle_stray_noerror())
2074 error("stray '\\' in program");
2077 /* skip the stray and handle the \\n case. Output an error if
2078 incorrect char after the stray */
2079 static int handle_stray1(uint8_t *p
)
2083 if (p
>= file
->buf_end
) {
2100 /* handle just the EOB case, but not stray */
2101 #define PEEKC_EOB(c, p)\
2112 /* handle the complicated stray case */
2113 #define PEEKC(c, p)\
2118 c = handle_stray1(p);\
2123 /* input with '\[\r]\n' handling. Note that this function cannot
2124 handle other characters after '\', so you cannot call it inside
2125 strings or comments */
2126 static void minp(void)
2134 /* single line C++ comments */
2135 static uint8_t *parse_line_comment(uint8_t *p
)
2143 if (c
== '\n' || c
== CH_EOF
) {
2145 } else if (c
== '\\') {
2154 } else if (c
== '\r') {
2172 static uint8_t *parse_comment(uint8_t *p
)
2178 /* fast skip loop */
2181 if (c
== '\n' || c
== '*' || c
== '\\')
2185 if (c
== '\n' || c
== '*' || c
== '\\')
2189 /* now we can handle all the cases */
2193 } else if (c
== '*') {
2199 } else if (c
== '/') {
2200 goto end_of_comment
;
2201 } else if (c
== '\\') {
2206 /* skip '\[\r]\n', otherwise just skip the stray */
2212 } else if (c
== '\r') {
2229 /* stray, eob or eof */
2234 error("unexpected end of file in comment");
2235 } else if (c
== '\\') {
2247 /* space exlcuding newline */
2248 static inline int is_space(int ch
)
2250 return ch
== ' ' || ch
== '\t' || ch
== '\v' || ch
== '\f' || ch
== '\r';
2253 static inline void skip_spaces(void)
2255 while (is_space(ch
))
2259 /* parse a string without interpreting escapes */
2260 static uint8_t *parse_pp_string(uint8_t *p
,
2261 int sep
, CString
*str
)
2269 } else if (c
== '\\') {
2274 unterminated_string
:
2275 /* XXX: indicate line number of start of string */
2276 error("missing terminating %c character", sep
);
2277 } else if (c
== '\\') {
2278 /* escape : just skip \[\r]\n */
2283 } else if (c
== '\r') {
2286 expect("'\n' after '\r'");
2289 } else if (c
== CH_EOF
) {
2290 goto unterminated_string
;
2293 cstr_ccat(str
, '\\');
2299 } else if (c
== '\n') {
2302 } else if (c
== '\r') {
2306 cstr_ccat(str
, '\r');
2322 /* skip block of text until #else, #elif or #endif. skip also pairs of
2324 void preprocess_skip(void)
2326 int a
, start_of_line
, c
, in_warn_or_error
;
2333 in_warn_or_error
= 0;
2354 } else if (c
== '\\') {
2355 ch
= file
->buf_ptr
[0];
2356 handle_stray_noerror();
2363 if (in_warn_or_error
)
2365 p
= parse_pp_string(p
, c
, NULL
);
2369 if (in_warn_or_error
)
2376 p
= parse_comment(p
);
2377 } else if (ch
== '/') {
2378 p
= parse_line_comment(p
);
2383 if (start_of_line
) {
2388 (tok
== TOK_ELSE
|| tok
== TOK_ELIF
|| tok
== TOK_ENDIF
))
2390 if (tok
== TOK_IF
|| tok
== TOK_IFDEF
|| tok
== TOK_IFNDEF
)
2392 else if (tok
== TOK_ENDIF
)
2394 else if( tok
== TOK_ERROR
|| tok
== TOK_WARNING
)
2395 in_warn_or_error
= 1;
2409 /* ParseState handling */
2411 /* XXX: currently, no include file info is stored. Thus, we cannot display
2412 accurate messages if the function or data definition spans multiple
2415 /* save current parse state in 's' */
2416 void save_parse_state(ParseState
*s
)
2418 s
->line_num
= file
->line_num
;
2419 s
->macro_ptr
= macro_ptr
;
2424 /* restore parse state from 's' */
2425 void restore_parse_state(ParseState
*s
)
2427 file
->line_num
= s
->line_num
;
2428 macro_ptr
= s
->macro_ptr
;
2433 /* return the number of additional 'ints' necessary to store the
2435 static inline int tok_ext_size(int t
)
2449 error("unsupported token");
2456 return LDOUBLE_SIZE
/ 4;
2462 /* token string handling */
2464 static inline void tok_str_new(TokenString
*s
)
2468 s
->allocated_len
= 0;
2469 s
->last_line_num
= -1;
2472 static void tok_str_free(int *str
)
2477 static int *tok_str_realloc(TokenString
*s
)
2481 if (s
->allocated_len
== 0) {
2484 len
= s
->allocated_len
* 2;
2486 str
= tcc_realloc(s
->str
, len
* sizeof(int));
2488 error("memory full");
2489 s
->allocated_len
= len
;
2494 static void tok_str_add(TokenString
*s
, int t
)
2500 if (len
>= s
->allocated_len
)
2501 str
= tok_str_realloc(s
);
2506 static void tok_str_add2(TokenString
*s
, int t
, CValue
*cv
)
2513 /* allocate space for worst case */
2514 if (len
+ TOK_MAX_SIZE
> s
->allocated_len
)
2515 str
= tok_str_realloc(s
);
2524 str
[len
++] = cv
->tab
[0];
2533 nb_words
= (sizeof(CString
) + cv
->cstr
->size
+ 3) >> 2;
2534 while ((len
+ nb_words
) > s
->allocated_len
)
2535 str
= tok_str_realloc(s
);
2536 cstr
= (CString
*)(str
+ len
);
2538 cstr
->size
= cv
->cstr
->size
;
2539 cstr
->data_allocated
= NULL
;
2540 cstr
->size_allocated
= cstr
->size
;
2541 memcpy((char *)cstr
+ sizeof(CString
),
2542 cv
->cstr
->data
, cstr
->size
);
2549 #if LDOUBLE_SIZE == 8
2552 str
[len
++] = cv
->tab
[0];
2553 str
[len
++] = cv
->tab
[1];
2555 #if LDOUBLE_SIZE == 12
2557 str
[len
++] = cv
->tab
[0];
2558 str
[len
++] = cv
->tab
[1];
2559 str
[len
++] = cv
->tab
[2];
2560 #elif LDOUBLE_SIZE != 8
2561 #error add long double size support
2570 /* add the current parse token in token string 's' */
2571 static void tok_str_add_tok(TokenString
*s
)
2575 /* save line number info */
2576 if (file
->line_num
!= s
->last_line_num
) {
2577 s
->last_line_num
= file
->line_num
;
2578 cval
.i
= s
->last_line_num
;
2579 tok_str_add2(s
, TOK_LINENUM
, &cval
);
2581 tok_str_add2(s
, tok
, &tokc
);
2584 #if LDOUBLE_SIZE == 12
2585 #define LDOUBLE_GET(p, cv) \
2589 #elif LDOUBLE_SIZE == 8
2590 #define LDOUBLE_GET(p, cv) \
2594 #error add long double size support
2598 /* get a token from an integer array and increment pointer
2599 accordingly. we code it as a macro to avoid pointer aliasing. */
2600 #define TOK_GET(t, p, cv) \
2615 cv.cstr = (CString *)p; \
2616 cv.cstr->data = (char *)p + sizeof(CString);\
2617 p += (sizeof(CString) + cv.cstr->size + 3) >> 2;\
2626 case TOK_CLDOUBLE: \
2627 LDOUBLE_GET(p, cv); \
2628 p += LDOUBLE_SIZE / 4; \
2635 /* defines handling */
2636 static inline void define_push(int v
, int macro_type
, int *str
, Sym
*first_arg
)
2640 s
= sym_push2(&define_stack
, v
, macro_type
, (int)str
);
2641 s
->next
= first_arg
;
2642 table_ident
[v
- TOK_IDENT
]->sym_define
= s
;
2645 /* undefined a define symbol. Its name is just set to zero */
2646 static void define_undef(Sym
*s
)
2650 if (v
>= TOK_IDENT
&& v
< tok_ident
)
2651 table_ident
[v
- TOK_IDENT
]->sym_define
= NULL
;
2655 static inline Sym
*define_find(int v
)
2658 if ((unsigned)v
>= (unsigned)(tok_ident
- TOK_IDENT
))
2660 return table_ident
[v
]->sym_define
;
2663 /* free define stack until top reaches 'b' */
2664 static void free_defines(Sym
*b
)
2672 /* do not free args or predefined defines */
2674 tok_str_free((int *)top
->c
);
2676 if (v
>= TOK_IDENT
&& v
< tok_ident
)
2677 table_ident
[v
- TOK_IDENT
]->sym_define
= NULL
;
2685 static Sym
*label_find(int v
)
2688 if ((unsigned)v
>= (unsigned)(tok_ident
- TOK_IDENT
))
2690 return table_ident
[v
]->sym_label
;
2693 static Sym
*label_push(Sym
**ptop
, int v
, int flags
)
2696 s
= sym_push2(ptop
, v
, 0, 0);
2698 ps
= &table_ident
[v
- TOK_IDENT
]->sym_label
;
2699 if (ptop
== &global_label_stack
) {
2700 /* modify the top most local identifier, so that
2701 sym_identifier will point to 's' when popped */
2703 ps
= &(*ps
)->prev_tok
;
2710 /* pop labels until element last is reached. Look if any labels are
2711 undefined. Define symbols if '&&label' was used. */
2712 static void label_pop(Sym
**ptop
, Sym
*slast
)
2715 for(s
= *ptop
; s
!= slast
; s
= s1
) {
2717 if (s
->r
== LABEL_DECLARED
) {
2718 warning("label '%s' declared but not used", get_tok_str(s
->v
, NULL
));
2719 } else if (s
->r
== LABEL_FORWARD
) {
2720 error("label '%s' used but not defined",
2721 get_tok_str(s
->v
, NULL
));
2724 /* define corresponding symbol. A size of
2726 put_extern_sym(s
, cur_text_section
, (long)s
->next
, 1);
2730 table_ident
[s
->v
- TOK_IDENT
]->sym_label
= s
->prev_tok
;
2736 /* eval an expression for #if/#elif */
2737 static int expr_preprocess(void)
2743 while (tok
!= TOK_LINEFEED
&& tok
!= TOK_EOF
) {
2744 next(); /* do macro subst */
2745 if (tok
== TOK_DEFINED
) {
2750 c
= define_find(tok
) != 0;
2755 } else if (tok
>= TOK_IDENT
) {
2756 /* if undefined macro */
2760 tok_str_add_tok(&str
);
2762 tok_str_add(&str
, -1); /* simulate end of file */
2763 tok_str_add(&str
, 0);
2764 /* now evaluate C constant expression */
2765 macro_ptr
= str
.str
;
2769 tok_str_free(str
.str
);
2773 #if defined(PARSE_DEBUG) || defined(PP_DEBUG)
2774 static void tok_print(int *str
)
2780 TOK_GET(t
, str
, cval
);
2783 printf(" %s", get_tok_str(t
, &cval
));
2789 /* parse after #define */
2790 static void parse_define(void)
2792 Sym
*s
, *first
, **ps
;
2793 int v
, t
, varg
, is_vaargs
, c
;
2798 error("invalid macro name '%s'", get_tok_str(tok
, &tokc
));
2799 /* XXX: should check if same macro (ANSI) */
2802 /* '(' must be just after macro definition for MACRO_FUNC */
2803 c
= file
->buf_ptr
[0];
2805 c
= handle_stray1(file
->buf_ptr
);
2810 while (tok
!= ')') {
2814 if (varg
== TOK_DOTS
) {
2815 varg
= TOK___VA_ARGS__
;
2817 } else if (tok
== TOK_DOTS
&& gnu_ext
) {
2821 if (varg
< TOK_IDENT
)
2822 error("badly punctuated parameter list");
2823 s
= sym_push2(&define_stack
, varg
| SYM_FIELD
, is_vaargs
, 0);
2834 /* EOF testing necessary for '-D' handling */
2835 while (tok
!= TOK_LINEFEED
&& tok
!= TOK_EOF
) {
2836 tok_str_add2(&str
, tok
, &tokc
);
2839 tok_str_add(&str
, 0);
2841 printf("define %s %d: ", get_tok_str(v
, NULL
), t
);
2844 define_push(v
, t
, str
.str
, first
);
2847 static inline int hash_cached_include(int type
, const char *filename
)
2849 const unsigned char *s
;
2853 h
= TOK_HASH_FUNC(h
, type
);
2856 h
= TOK_HASH_FUNC(h
, *s
);
2859 h
&= (CACHED_INCLUDES_HASH_SIZE
- 1);
2863 /* XXX: use a token or a hash table to accelerate matching ? */
2864 static CachedInclude
*search_cached_include(TCCState
*s1
,
2865 int type
, const char *filename
)
2869 h
= hash_cached_include(type
, filename
);
2870 i
= s1
->cached_includes_hash
[h
];
2874 e
= s1
->cached_includes
[i
- 1];
2875 if (e
->type
== type
&& !strcmp(e
->filename
, filename
))
2882 static inline void add_cached_include(TCCState
*s1
, int type
,
2883 const char *filename
, int ifndef_macro
)
2888 if (search_cached_include(s1
, type
, filename
))
2891 printf("adding cached '%s' %s\n", filename
, get_tok_str(ifndef_macro
, NULL
));
2893 e
= tcc_malloc(sizeof(CachedInclude
) + strlen(filename
));
2897 strcpy(e
->filename
, filename
);
2898 e
->ifndef_macro
= ifndef_macro
;
2899 dynarray_add((void ***)&s1
->cached_includes
, &s1
->nb_cached_includes
, e
);
2900 /* add in hash table */
2901 h
= hash_cached_include(type
, filename
);
2902 e
->hash_next
= s1
->cached_includes_hash
[h
];
2903 s1
->cached_includes_hash
[h
] = s1
->nb_cached_includes
;
2906 static void pragma_parse(TCCState
*s1
)
2911 if (tok
== TOK_pack
) {
2914 #pragma pack(1) // set
2915 #pragma pack() // reset to default
2916 #pragma pack(push,1) // push & set
2917 #pragma pack(pop) // restore previous
2921 if (tok
== TOK_ASM_pop
) {
2923 if (s1
->pack_stack_ptr
<= s1
->pack_stack
) {
2925 error("out of pack stack");
2927 s1
->pack_stack_ptr
--;
2931 if (tok
== TOK_ASM_push
) {
2933 if (s1
->pack_stack_ptr
>= s1
->pack_stack
+ PACK_STACK_SIZE
- 1)
2935 s1
->pack_stack_ptr
++;
2938 if (tok
!= TOK_CINT
) {
2940 error("invalid pack pragma");
2943 if (val
< 1 || val
> 16 || (val
& (val
- 1)) != 0)
2947 *s1
->pack_stack_ptr
= val
;
2953 /* is_bof is true if first non space token at beginning of file */
2954 static void preprocess(int is_bof
)
2956 TCCState
*s1
= tcc_state
;
2957 int size
, i
, c
, n
, saved_parse_flags
;
2964 saved_parse_flags
= parse_flags
;
2965 parse_flags
= PARSE_FLAG_PREPROCESS
| PARSE_FLAG_TOK_NUM
|
2966 PARSE_FLAG_LINEFEED
;
2976 s
= define_find(tok
);
2977 /* undefine symbol by putting an invalid name */
2982 case TOK_INCLUDE_NEXT
:
2983 ch
= file
->buf_ptr
[0];
2984 /* XXX: incorrect if comments : use next_nomacro with a special mode */
2989 } else if (ch
== '\"') {
2994 while (ch
!= c
&& ch
!= '\n' && ch
!= CH_EOF
) {
2995 if ((q
- buf
) < sizeof(buf
) - 1)
2998 if (handle_stray_noerror() == 0)
3006 /* eat all spaces and comments after include */
3007 /* XXX: slightly incorrect */
3008 while (ch1
!= '\n' && ch1
!= CH_EOF
)
3012 /* computed #include : either we have only strings or
3013 we have anything enclosed in '<>' */
3016 if (tok
== TOK_STR
) {
3017 while (tok
!= TOK_LINEFEED
) {
3018 if (tok
!= TOK_STR
) {
3020 error("'#include' expects \"FILENAME\" or <FILENAME>");
3022 pstrcat(buf
, sizeof(buf
), (char *)tokc
.cstr
->data
);
3028 while (tok
!= TOK_LINEFEED
) {
3029 pstrcat(buf
, sizeof(buf
), get_tok_str(tok
, &tokc
));
3033 /* check syntax and remove '<>' */
3034 if (len
< 2 || buf
[0] != '<' || buf
[len
- 1] != '>')
3035 goto include_syntax
;
3036 memmove(buf
, buf
+ 1, len
- 2);
3037 buf
[len
- 2] = '\0';
3042 e
= search_cached_include(s1
, c
, buf
);
3043 if (e
&& define_find(e
->ifndef_macro
)) {
3044 /* no need to parse the include because the 'ifndef macro'
3047 printf("%s: skipping %s\n", file
->filename
, buf
);
3050 if (s1
->include_stack_ptr
>= s1
->include_stack
+ INCLUDE_STACK_SIZE
)
3051 error("#include recursion too deep");
3052 /* push current file in stack */
3053 /* XXX: fix current line init */
3054 *s1
->include_stack_ptr
++ = file
;
3056 /* first search in current dir if "header.h" */
3057 size
= tcc_basename(file
->filename
) - file
->filename
;
3058 if (size
> sizeof(buf1
) - 1)
3059 size
= sizeof(buf1
) - 1;
3060 memcpy(buf1
, file
->filename
, size
);
3062 pstrcat(buf1
, sizeof(buf1
), buf
);
3063 f
= tcc_open(s1
, buf1
);
3065 if (tok
== TOK_INCLUDE_NEXT
)
3071 /* now search in all the include paths */
3072 n
= s1
->nb_include_paths
+ s1
->nb_sysinclude_paths
;
3073 for(i
= 0; i
< n
; i
++) {
3075 if (i
< s1
->nb_include_paths
)
3076 path
= s1
->include_paths
[i
];
3078 path
= s1
->sysinclude_paths
[i
- s1
->nb_include_paths
];
3079 pstrcpy(buf1
, sizeof(buf1
), path
);
3080 pstrcat(buf1
, sizeof(buf1
), "/");
3081 pstrcat(buf1
, sizeof(buf1
), buf
);
3082 f
= tcc_open(s1
, buf1
);
3084 if (tok
== TOK_INCLUDE_NEXT
)
3090 --s1
->include_stack_ptr
;
3091 error("include file '%s' not found", buf
);
3095 printf("%s: including %s\n", file
->filename
, buf1
);
3098 pstrcpy(f
->inc_filename
, sizeof(f
->inc_filename
), buf
);
3100 /* add include file debug info */
3102 put_stabs(file
->filename
, N_BINCL
, 0, 0, 0);
3104 tok_flags
|= TOK_FLAG_BOF
| TOK_FLAG_BOL
;
3105 ch
= file
->buf_ptr
[0];
3113 c
= expr_preprocess();
3119 if (tok
< TOK_IDENT
)
3120 error("invalid argument for '#if%sdef'", c
? "n" : "");
3124 printf("#ifndef %s\n", get_tok_str(tok
, NULL
));
3126 file
->ifndef_macro
= tok
;
3129 c
= (define_find(tok
) != 0) ^ c
;
3131 if (s1
->ifdef_stack_ptr
>= s1
->ifdef_stack
+ IFDEF_STACK_SIZE
)
3132 error("memory full");
3133 *s1
->ifdef_stack_ptr
++ = c
;
3136 if (s1
->ifdef_stack_ptr
== s1
->ifdef_stack
)
3137 error("#else without matching #if");
3138 if (s1
->ifdef_stack_ptr
[-1] & 2)
3139 error("#else after #else");
3140 c
= (s1
->ifdef_stack_ptr
[-1] ^= 3);
3143 if (s1
->ifdef_stack_ptr
== s1
->ifdef_stack
)
3144 error("#elif without matching #if");
3145 c
= s1
->ifdef_stack_ptr
[-1];
3147 error("#elif after #else");
3148 /* last #if/#elif expression was true: we skip */
3151 c
= expr_preprocess();
3152 s1
->ifdef_stack_ptr
[-1] = c
;
3162 if (s1
->ifdef_stack_ptr
<= file
->ifdef_stack_ptr
)
3163 error("#endif without matching #if");
3164 s1
->ifdef_stack_ptr
--;
3165 /* '#ifndef macro' was at the start of file. Now we check if
3166 an '#endif' is exactly at the end of file */
3167 if (file
->ifndef_macro
&&
3168 s1
->ifdef_stack_ptr
== file
->ifdef_stack_ptr
) {
3169 file
->ifndef_macro_saved
= file
->ifndef_macro
;
3170 /* need to set to zero to avoid false matches if another
3171 #ifndef at middle of file */
3172 file
->ifndef_macro
= 0;
3173 while (tok
!= TOK_LINEFEED
)
3175 tok_flags
|= TOK_FLAG_ENDIF
;
3181 if (tok
!= TOK_CINT
)
3183 file
->line_num
= tokc
.i
- 1; /* the line number will be incremented after */
3185 if (tok
!= TOK_LINEFEED
) {
3188 pstrcpy(file
->filename
, sizeof(file
->filename
),
3189 (char *)tokc
.cstr
->data
);
3195 ch
= file
->buf_ptr
[0];
3198 while (ch
!= '\n' && ch
!= CH_EOF
) {
3199 if ((q
- buf
) < sizeof(buf
) - 1)
3202 if (handle_stray_noerror() == 0)
3209 error("#error %s", buf
);
3211 warning("#warning %s", buf
);
3217 if (tok
== TOK_LINEFEED
|| tok
== '!' || tok
== TOK_CINT
) {
3218 /* '!' is ignored to allow C scripts. numbers are ignored
3219 to emulate cpp behaviour */
3221 if (!(saved_parse_flags
& PARSE_FLAG_ASM_COMMENTS
))
3222 warning("Ignoring unknown preprocessing directive #%s", get_tok_str(tok
, &tokc
));
3226 /* ignore other preprocess commands or #! for C scripts */
3227 while (tok
!= TOK_LINEFEED
)
3230 parse_flags
= saved_parse_flags
;
3233 /* evaluate escape codes in a string. */
3234 static void parse_escape_string(CString
*outstr
, const uint8_t *buf
, int is_long
)
3249 case '0': case '1': case '2': case '3':
3250 case '4': case '5': case '6': case '7':
3251 /* at most three octal digits */
3256 n
= n
* 8 + c
- '0';
3260 n
= n
* 8 + c
- '0';
3265 goto add_char_nonext
;
3273 if (c
>= 'a' && c
<= 'f')
3275 else if (c
>= 'A' && c
<= 'F')
3285 goto add_char_nonext
;
3309 goto invalid_escape
;
3319 if (c
>= '!' && c
<= '~')
3320 warning("unknown escape sequence: \'\\%c\'", c
);
3322 warning("unknown escape sequence: \'\\x%x\'", c
);
3329 cstr_ccat(outstr
, c
);
3331 cstr_wccat(outstr
, c
);
3333 /* add a trailing '\0' */
3335 cstr_ccat(outstr
, '\0');
3337 cstr_wccat(outstr
, '\0');
3340 /* we use 64 bit numbers */
3343 /* bn = (bn << shift) | or_val */
3344 void bn_lshift(unsigned int *bn
, int shift
, int or_val
)
3348 for(i
=0;i
<BN_SIZE
;i
++) {
3350 bn
[i
] = (v
<< shift
) | or_val
;
3351 or_val
= v
>> (32 - shift
);
3355 void bn_zero(unsigned int *bn
)
3358 for(i
=0;i
<BN_SIZE
;i
++) {
3363 /* parse number in null terminated string 'p' and return it in the
3365 void parse_number(const char *p
)
3367 int b
, t
, shift
, frac_bits
, s
, exp_val
, ch
;
3369 unsigned int bn
[BN_SIZE
];
3380 goto float_frac_parse
;
3381 } else if (t
== '0') {
3382 if (ch
== 'x' || ch
== 'X') {
3386 } else if (tcc_ext
&& (ch
== 'b' || ch
== 'B')) {
3392 /* parse all digits. cannot check octal numbers at this stage
3393 because of floating point constants */
3395 if (ch
>= 'a' && ch
<= 'f')
3397 else if (ch
>= 'A' && ch
<= 'F')
3405 if (q
>= token_buf
+ STRING_MAX_SIZE
) {
3407 error("number too long");
3413 ((ch
== 'e' || ch
== 'E') && b
== 10) ||
3414 ((ch
== 'p' || ch
== 'P') && (b
== 16 || b
== 2))) {
3416 /* NOTE: strtox should support that for hexa numbers, but
3417 non ISOC99 libcs do not support it, so we prefer to do
3419 /* hexadecimal or binary floats */
3420 /* XXX: handle overflows */
3432 } else if (t
>= 'a') {
3434 } else if (t
>= 'A') {
3439 bn_lshift(bn
, shift
, t
);
3446 if (t
>= 'a' && t
<= 'f') {
3448 } else if (t
>= 'A' && t
<= 'F') {
3450 } else if (t
>= '0' && t
<= '9') {
3456 error("invalid digit");
3457 bn_lshift(bn
, shift
, t
);
3462 if (ch
!= 'p' && ch
!= 'P')
3469 } else if (ch
== '-') {
3473 if (ch
< '0' || ch
> '9')
3474 expect("exponent digits");
3475 while (ch
>= '0' && ch
<= '9') {
3476 exp_val
= exp_val
* 10 + ch
- '0';
3479 exp_val
= exp_val
* s
;
3481 /* now we can generate the number */
3482 /* XXX: should patch directly float number */
3483 d
= (double)bn
[1] * 4294967296.0 + (double)bn
[0];
3484 d
= ldexp(d
, exp_val
- frac_bits
);
3489 /* float : should handle overflow */
3491 } else if (t
== 'L') {
3494 /* XXX: not large enough */
3495 tokc
.ld
= (long double)d
;
3501 /* decimal floats */
3503 if (q
>= token_buf
+ STRING_MAX_SIZE
)
3508 while (ch
>= '0' && ch
<= '9') {
3509 if (q
>= token_buf
+ STRING_MAX_SIZE
)
3515 if (ch
== 'e' || ch
== 'E') {
3516 if (q
>= token_buf
+ STRING_MAX_SIZE
)
3520 if (ch
== '-' || ch
== '+') {
3521 if (q
>= token_buf
+ STRING_MAX_SIZE
)
3526 if (ch
< '0' || ch
> '9')
3527 expect("exponent digits");
3528 while (ch
>= '0' && ch
<= '9') {
3529 if (q
>= token_buf
+ STRING_MAX_SIZE
)
3541 tokc
.f
= strtof(token_buf
, NULL
);
3542 } else if (t
== 'L') {
3545 tokc
.ld
= strtold(token_buf
, NULL
);
3548 tokc
.d
= strtod(token_buf
, NULL
);
3552 unsigned long long n
, n1
;
3555 /* integer number */
3558 if (b
== 10 && *q
== '0') {
3565 /* no need for checks except for base 10 / 8 errors */
3568 } else if (t
>= 'a') {
3570 } else if (t
>= 'A') {
3575 error("invalid digit");
3579 /* detect overflow */
3580 /* XXX: this test is not reliable */
3582 error("integer constant overflow");
3585 /* XXX: not exactly ANSI compliant */
3586 if ((n
& 0xffffffff00000000LL
) != 0) {
3591 } else if (n
> 0x7fffffff) {
3602 error("three 'l's in integer constant");
3605 if (tok
== TOK_CINT
)
3607 else if (tok
== TOK_CUINT
)
3611 } else if (t
== 'U') {
3613 error("two 'u's in integer constant");
3615 if (tok
== TOK_CINT
)
3617 else if (tok
== TOK_CLLONG
)
3624 if (tok
== TOK_CINT
|| tok
== TOK_CUINT
)
3632 #define PARSE2(c1, tok1, c2, tok2) \
3643 /* return next token without macro substitution */
3644 static inline void next_nomacro1(void)
3664 /* first look if it is in fact an end of buffer */
3665 if (p
>= file
->buf_end
) {
3669 if (p
>= file
->buf_end
)
3682 TCCState
*s1
= tcc_state
;
3683 if ((parse_flags
& PARSE_FLAG_LINEFEED
)
3684 && !(tok_flags
& TOK_FLAG_EOF
)) {
3685 tok_flags
|= TOK_FLAG_EOF
;
3687 goto keep_tok_flags
;
3688 } else if (s1
->include_stack_ptr
== s1
->include_stack
||
3689 !(parse_flags
& PARSE_FLAG_PREPROCESS
)) {
3690 /* no include left : end of file. */
3693 tok_flags
&= ~TOK_FLAG_EOF
;
3694 /* pop include file */
3696 /* test if previous '#endif' was after a #ifdef at
3698 if (tok_flags
& TOK_FLAG_ENDIF
) {
3700 printf("#endif %s\n", get_tok_str(file
->ifndef_macro_saved
, NULL
));
3702 add_cached_include(s1
, file
->inc_type
, file
->inc_filename
,
3703 file
->ifndef_macro_saved
);
3706 /* add end of include file debug info */
3708 put_stabd(N_EINCL
, 0, 0);
3710 /* pop include stack */
3712 s1
->include_stack_ptr
--;
3713 file
= *s1
->include_stack_ptr
;
3722 tok_flags
|= TOK_FLAG_BOL
;
3724 if (0 == (parse_flags
& PARSE_FLAG_LINEFEED
))
3727 goto keep_tok_flags
;
3732 if ((tok_flags
& TOK_FLAG_BOL
) &&
3733 (parse_flags
& PARSE_FLAG_PREPROCESS
)) {
3735 preprocess(tok_flags
& TOK_FLAG_BOF
);
3741 tok
= TOK_TWOSHARPS
;
3743 if (parse_flags
& PARSE_FLAG_ASM_COMMENTS
) {
3744 p
= parse_line_comment(p
- 1);
3753 case 'a': case 'b': case 'c': case 'd':
3754 case 'e': case 'f': case 'g': case 'h':
3755 case 'i': case 'j': case 'k': case 'l':
3756 case 'm': case 'n': case 'o': case 'p':
3757 case 'q': case 'r': case 's': case 't':
3758 case 'u': case 'v': case 'w': case 'x':
3760 case 'A': case 'B': case 'C': case 'D':
3761 case 'E': case 'F': case 'G': case 'H':
3762 case 'I': case 'J': case 'K':
3763 case 'M': case 'N': case 'O': case 'P':
3764 case 'Q': case 'R': case 'S': case 'T':
3765 case 'U': case 'V': case 'W': case 'X':
3771 h
= TOK_HASH_FUNC(h
, c
);
3775 if (!isidnum_table
[c
-CH_EOF
])
3777 h
= TOK_HASH_FUNC(h
, c
);
3784 /* fast case : no stray found, so we have the full token
3785 and we have already hashed it */
3787 h
&= (TOK_HASH_SIZE
- 1);
3788 pts
= &hash_ident
[h
];
3793 if (ts
->len
== len
&& !memcmp(ts
->str
, p1
, len
))
3795 pts
= &(ts
->hash_next
);
3797 ts
= tok_alloc_new(pts
, p1
, len
);
3801 cstr_reset(&tokcstr
);
3804 cstr_ccat(&tokcstr
, *p1
);
3810 while (isidnum_table
[c
-CH_EOF
]) {
3811 cstr_ccat(&tokcstr
, c
);
3814 ts
= tok_alloc(tokcstr
.data
, tokcstr
.size
);
3820 if (t
!= '\\' && t
!= '\'' && t
!= '\"') {
3822 goto parse_ident_fast
;
3825 if (c
== '\'' || c
== '\"') {
3829 cstr_reset(&tokcstr
);
3830 cstr_ccat(&tokcstr
, 'L');
3831 goto parse_ident_slow
;
3835 case '0': case '1': case '2': case '3':
3836 case '4': case '5': case '6': case '7':
3839 cstr_reset(&tokcstr
);
3840 /* after the first digit, accept digits, alpha, '.' or sign if
3841 prefixed by 'eEpP' */
3845 cstr_ccat(&tokcstr
, c
);
3847 if (!(isnum(c
) || isid(c
) || c
== '.' ||
3848 ((c
== '+' || c
== '-') &&
3849 (t
== 'e' || t
== 'E' || t
== 'p' || t
== 'P'))))
3852 /* We add a trailing '\0' to ease parsing */
3853 cstr_ccat(&tokcstr
, '\0');
3854 tokc
.cstr
= &tokcstr
;
3858 /* special dot handling because it can also start a number */
3861 cstr_reset(&tokcstr
);
3862 cstr_ccat(&tokcstr
, '.');
3864 } else if (c
== '.') {
3884 /* parse the string */
3886 p
= parse_pp_string(p
, sep
, &str
);
3887 cstr_ccat(&str
, '\0');
3889 /* eval the escape (should be done as TOK_PPNUM) */
3890 cstr_reset(&tokcstr
);
3891 parse_escape_string(&tokcstr
, str
.data
, is_long
);
3896 /* XXX: make it portable */
3900 char_size
= sizeof(nwchar_t
);
3901 if (tokcstr
.size
<= char_size
)
3902 error("empty character constant");
3903 if (tokcstr
.size
> 2 * char_size
)
3904 warning("multi-character character constant");
3906 tokc
.i
= *(int8_t *)tokcstr
.data
;
3909 tokc
.i
= *(nwchar_t
*)tokcstr
.data
;
3913 tokc
.cstr
= &tokcstr
;
3927 } else if (c
== '<') {
3945 } else if (c
== '>') {
3963 } else if (c
== '=') {
3976 } else if (c
== '=') {
3989 } else if (c
== '=') {
4002 } else if (c
== '=') {
4005 } else if (c
== '>') {
4013 PARSE2('!', '!', '=', TOK_NE
)
4014 PARSE2('=', '=', '=', TOK_EQ
)
4015 PARSE2('*', '*', '=', TOK_A_MUL
)
4016 PARSE2('%', '%', '=', TOK_A_MOD
)
4017 PARSE2('^', '^', '=', TOK_A_XOR
)
4019 /* comments or operator */
4023 p
= parse_comment(p
);
4025 } else if (c
== '/') {
4026 p
= parse_line_comment(p
);
4028 } else if (c
== '=') {
4048 case '$': /* only used in assembler */
4049 case '@': /* dito */
4054 error("unrecognized character \\x%02x", c
);
4060 #if defined(PARSE_DEBUG)
4061 printf("token = %s\n", get_tok_str(tok
, &tokc
));
4065 /* return next token without macro substitution. Can read input from
4067 static void next_nomacro(void)
4073 TOK_GET(tok
, macro_ptr
, tokc
);
4074 if (tok
== TOK_LINENUM
) {
4075 file
->line_num
= tokc
.i
;
4084 /* substitute args in macro_str and return allocated string */
4085 static int *macro_arg_subst(Sym
**nested_list
, int *macro_str
, Sym
*args
)
4087 int *st
, last_tok
, t
, notfirst
;
4096 TOK_GET(t
, macro_str
, cval
);
4101 TOK_GET(t
, macro_str
, cval
);
4104 s
= sym_find2(args
, t
);
4111 cstr_ccat(&cstr
, ' ');
4112 TOK_GET(t
, st
, cval
);
4113 cstr_cat(&cstr
, get_tok_str(t
, &cval
));
4118 cstr_ccat(&cstr
, '\0');
4120 printf("stringize: %s\n", (char *)cstr
.data
);
4124 tok_str_add2(&str
, TOK_STR
, &cval
);
4127 tok_str_add2(&str
, t
, &cval
);
4129 } else if (t
>= TOK_IDENT
) {
4130 s
= sym_find2(args
, t
);
4133 /* if '##' is present before or after, no arg substitution */
4134 if (*macro_str
== TOK_TWOSHARPS
|| last_tok
== TOK_TWOSHARPS
) {
4135 /* special case for var arg macros : ## eats the
4136 ',' if empty VA_ARGS variable. */
4137 /* XXX: test of the ',' is not 100%
4138 reliable. should fix it to avoid security
4140 if (gnu_ext
&& s
->type
.t
&&
4141 last_tok
== TOK_TWOSHARPS
&&
4142 str
.len
>= 2 && str
.str
[str
.len
- 2] == ',') {
4144 /* suppress ',' '##' */
4147 /* suppress '##' and add variable */
4155 TOK_GET(t1
, st
, cval
);
4158 tok_str_add2(&str
, t1
, &cval
);
4162 /* NOTE: the stream cannot be read when macro
4163 substituing an argument */
4164 macro_subst(&str
, nested_list
, st
, NULL
);
4167 tok_str_add(&str
, t
);
4170 tok_str_add2(&str
, t
, &cval
);
4174 tok_str_add(&str
, 0);
4178 static char const ab_month_name
[12][4] =
4180 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
4181 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
4184 /* do macro substitution of current token with macro 's' and add
4185 result to (tok_str,tok_len). 'nested_list' is the list of all
4186 macros we got inside to avoid recursing. Return non zero if no
4187 substitution needs to be done */
4188 static int macro_subst_tok(TokenString
*tok_str
,
4189 Sym
**nested_list
, Sym
*s
, struct macro_level
**can_read_stream
)
4191 Sym
*args
, *sa
, *sa1
;
4192 int mstr_allocated
, parlevel
, *mstr
, t
, t1
;
4199 /* if symbol is a macro, prepare substitution */
4200 /* special macros */
4201 if (tok
== TOK___LINE__
) {
4202 snprintf(buf
, sizeof(buf
), "%d", file
->line_num
);
4206 } else if (tok
== TOK___FILE__
) {
4207 cstrval
= file
->filename
;
4209 } else if (tok
== TOK___DATE__
|| tok
== TOK___TIME__
) {
4214 tm
= localtime(&ti
);
4215 if (tok
== TOK___DATE__
) {
4216 snprintf(buf
, sizeof(buf
), "%s %2d %d",
4217 ab_month_name
[tm
->tm_mon
], tm
->tm_mday
, tm
->tm_year
+ 1900);
4219 snprintf(buf
, sizeof(buf
), "%02d:%02d:%02d",
4220 tm
->tm_hour
, tm
->tm_min
, tm
->tm_sec
);
4227 cstr_cat(&cstr
, cstrval
);
4228 cstr_ccat(&cstr
, '\0');
4230 tok_str_add2(tok_str
, t1
, &cval
);
4235 if (s
->type
.t
== MACRO_FUNC
) {
4236 /* NOTE: we do not use next_nomacro to avoid eating the
4237 next token. XXX: find better solution */
4241 if (t
== 0 && can_read_stream
) {
4242 /* end of macro stream: we must look at the token
4243 after in the file */
4244 struct macro_level
*ml
= *can_read_stream
;
4250 *can_read_stream
= ml
-> prev
;
4255 /* XXX: incorrect with comments */
4256 ch
= file
->buf_ptr
[0];
4257 while (is_space(ch
) || ch
== '\n')
4261 if (t
!= '(') /* no macro subst */
4264 /* argument macro */
4269 /* NOTE: empty args are allowed, except if no args */
4271 /* handle '()' case */
4272 if (!args
&& !sa
&& tok
== ')')
4275 error("macro '%s' used with too many args",
4276 get_tok_str(s
->v
, 0));
4279 /* NOTE: non zero sa->t indicates VA_ARGS */
4280 while ((parlevel
> 0 ||
4282 (tok
!= ',' || sa
->type
.t
))) &&
4286 else if (tok
== ')')
4288 if (tok
!= TOK_LINEFEED
)
4289 tok_str_add2(&str
, tok
, &tokc
);
4292 tok_str_add(&str
, 0);
4293 sym_push2(&args
, sa
->v
& ~SYM_FIELD
, sa
->type
.t
, (int)str
.str
);
4296 /* special case for gcc var args: add an empty
4297 var arg argument if it is omitted */
4298 if (sa
&& sa
->type
.t
&& gnu_ext
)
4308 error("macro '%s' used with too few args",
4309 get_tok_str(s
->v
, 0));
4312 /* now subst each arg */
4313 mstr
= macro_arg_subst(nested_list
, mstr
, args
);
4318 tok_str_free((int *)sa
->c
);
4324 sym_push2(nested_list
, s
->v
, 0, 0);
4325 macro_subst(tok_str
, nested_list
, mstr
, can_read_stream
);
4326 /* pop nested defined symbol */
4328 *nested_list
= sa1
->prev
;
4336 /* handle the '##' operator. Return NULL if no '##' seen. Otherwise
4337 return the resulting string (which must be freed). */
4338 static inline int *macro_twosharps(const int *macro_str
)
4341 const int *macro_ptr1
, *start_macro_ptr
, *ptr
, *saved_macro_ptr
;
4343 const char *p1
, *p2
;
4345 TokenString macro_str1
;
4348 start_macro_ptr
= macro_str
;
4349 /* we search the first '##' */
4351 macro_ptr1
= macro_str
;
4352 TOK_GET(t
, macro_str
, cval
);
4353 /* nothing more to do if end of string */
4356 if (*macro_str
== TOK_TWOSHARPS
)
4360 /* we saw '##', so we need more processing to handle it */
4362 tok_str_new(¯o_str1
);
4366 /* add all tokens seen so far */
4367 for(ptr
= start_macro_ptr
; ptr
< macro_ptr1
;) {
4368 TOK_GET(t
, ptr
, cval
);
4369 tok_str_add2(¯o_str1
, t
, &cval
);
4371 saved_macro_ptr
= macro_ptr
;
4372 /* XXX: get rid of the use of macro_ptr here */
4373 macro_ptr
= (int *)macro_str
;
4375 while (*macro_ptr
== TOK_TWOSHARPS
) {
4377 macro_ptr1
= macro_ptr
;
4380 TOK_GET(t
, macro_ptr
, cval
);
4381 /* We concatenate the two tokens if we have an
4382 identifier or a preprocessing number */
4384 p1
= get_tok_str(tok
, &tokc
);
4385 cstr_cat(&cstr
, p1
);
4386 p2
= get_tok_str(t
, &cval
);
4387 cstr_cat(&cstr
, p2
);
4388 cstr_ccat(&cstr
, '\0');
4390 if ((tok
>= TOK_IDENT
|| tok
== TOK_PPNUM
) &&
4391 (t
>= TOK_IDENT
|| t
== TOK_PPNUM
)) {
4392 if (tok
== TOK_PPNUM
) {
4393 /* if number, then create a number token */
4394 /* NOTE: no need to allocate because
4395 tok_str_add2() does it */
4396 cstr_reset(&tokcstr
);
4399 tokc
.cstr
= &tokcstr
;
4401 /* if identifier, we must do a test to
4402 validate we have a correct identifier */
4403 if (t
== TOK_PPNUM
) {
4413 if (!isnum(c
) && !isid(c
))
4417 ts
= tok_alloc(cstr
.data
, strlen(cstr
.data
));
4418 tok
= ts
->tok
; /* modify current token */
4421 const char *str
= cstr
.data
;
4422 const unsigned char *q
;
4424 /* we look for a valid token */
4425 /* XXX: do more extensive checks */
4426 if (!strcmp(str
, ">>=")) {
4428 } else if (!strcmp(str
, "<<=")) {
4430 } else if (strlen(str
) == 2) {
4431 /* search in two bytes table */
4436 if (q
[0] == str
[0] && q
[1] == str
[1])
4443 /* NOTE: because get_tok_str use a static buffer,
4446 p1
= get_tok_str(tok
, &tokc
);
4447 cstr_cat(&cstr
, p1
);
4448 cstr_ccat(&cstr
, '\0');
4449 p2
= get_tok_str(t
, &cval
);
4450 warning("pasting \"%s\" and \"%s\" does not give a valid preprocessing token", cstr
.data
, p2
);
4451 /* cannot merge tokens: just add them separately */
4452 tok_str_add2(¯o_str1
, tok
, &tokc
);
4453 /* XXX: free associated memory ? */
4460 tok_str_add2(¯o_str1
, tok
, &tokc
);
4465 macro_ptr
= (int *)saved_macro_ptr
;
4467 tok_str_add(¯o_str1
, 0);
4468 return macro_str1
.str
;
4472 /* do macro substitution of macro_str and add result to
4473 (tok_str,tok_len). 'nested_list' is the list of all macros we got
4474 inside to avoid recursing. */
4475 static void macro_subst(TokenString
*tok_str
, Sym
**nested_list
,
4476 const int *macro_str
, struct macro_level
** can_read_stream
)
4483 struct macro_level ml
;
4485 /* first scan for '##' operator handling */
4487 macro_str1
= macro_twosharps(ptr
);
4491 /* NOTE: ptr == NULL can only happen if tokens are read from
4492 file stream due to a macro function call */
4495 TOK_GET(t
, ptr
, cval
);
4500 /* if nested substitution, do nothing */
4501 if (sym_find2(*nested_list
, t
))
4504 if (can_read_stream
)
4505 ml
.prev
= *can_read_stream
, *can_read_stream
= &ml
;
4506 macro_ptr
= (int *)ptr
;
4508 ret
= macro_subst_tok(tok_str
, nested_list
, s
, can_read_stream
);
4509 ptr
= (int *)macro_ptr
;
4511 if (can_read_stream
&& *can_read_stream
== &ml
)
4512 *can_read_stream
= ml
.prev
;
4517 tok_str_add2(tok_str
, t
, &cval
);
4521 tok_str_free(macro_str1
);
4524 /* return next token with macro substitution */
4525 static void next(void)
4527 Sym
*nested_list
, *s
;
4529 struct macro_level
*ml
;
4534 /* if not reading from macro substituted string, then try
4535 to substitute macros */
4536 if (tok
>= TOK_IDENT
&&
4537 (parse_flags
& PARSE_FLAG_PREPROCESS
)) {
4538 s
= define_find(tok
);
4540 /* we have a macro: we try to substitute */
4544 if (macro_subst_tok(&str
, &nested_list
, s
, &ml
) == 0) {
4545 /* substitution done, NOTE: maybe empty */
4546 tok_str_add(&str
, 0);
4547 macro_ptr
= str
.str
;
4548 macro_ptr_allocated
= str
.str
;
4555 /* end of macro or end of unget buffer */
4556 if (unget_buffer_enabled
) {
4557 macro_ptr
= unget_saved_macro_ptr
;
4558 unget_buffer_enabled
= 0;
4560 /* end of macro string: free it */
4561 tok_str_free(macro_ptr_allocated
);
4568 /* convert preprocessor tokens into C tokens */
4569 if (tok
== TOK_PPNUM
&&
4570 (parse_flags
& PARSE_FLAG_TOK_NUM
)) {
4571 parse_number((char *)tokc
.cstr
->data
);
4575 /* push back current token and set current token to 'last_tok'. Only
4576 identifier case handled for labels. */
4577 static inline void unget_tok(int last_tok
)
4581 unget_saved_macro_ptr
= macro_ptr
;
4582 unget_buffer_enabled
= 1;
4583 q
= unget_saved_buffer
;
4586 n
= tok_ext_size(tok
) - 1;
4589 *q
= 0; /* end of token string */
4594 void swap(int *p
, int *q
)
4602 void vsetc(CType
*type
, int r
, CValue
*vc
)
4606 if (vtop
>= vstack
+ (VSTACK_SIZE
- 1))
4607 error("memory full");
4608 /* cannot let cpu flags if other instruction are generated. Also
4609 avoid leaving VT_JMP anywhere except on the top of the stack
4610 because it would complicate the code generator. */
4611 if (vtop
>= vstack
) {
4612 v
= vtop
->r
& VT_VALMASK
;
4613 if (v
== VT_CMP
|| (v
& ~1) == VT_JMP
)
4619 vtop
->r2
= VT_CONST
;
4623 /* push integer constant */
4628 vsetc(&int_type
, VT_CONST
, &cval
);
4631 /* Return a static symbol pointing to a section */
4632 static Sym
*get_sym_ref(CType
*type
, Section
*sec
,
4633 unsigned long offset
, unsigned long size
)
4639 sym
= global_identifier_push(v
, type
->t
| VT_STATIC
, 0);
4640 sym
->type
.ref
= type
->ref
;
4641 sym
->r
= VT_CONST
| VT_SYM
;
4642 put_extern_sym(sym
, sec
, offset
, size
);
4646 /* push a reference to a section offset by adding a dummy symbol */
4647 static void vpush_ref(CType
*type
, Section
*sec
, unsigned long offset
, unsigned long size
)
4652 vsetc(type
, VT_CONST
| VT_SYM
, &cval
);
4653 vtop
->sym
= get_sym_ref(type
, sec
, offset
, size
);
4656 /* define a new external reference to a symbol 'v' of type 'u' */
4657 static Sym
*external_global_sym(int v
, CType
*type
, int r
)
4663 /* push forward reference */
4664 s
= global_identifier_push(v
, type
->t
| VT_EXTERN
, 0);
4665 s
->type
.ref
= type
->ref
;
4666 s
->r
= r
| VT_CONST
| VT_SYM
;
4671 /* define a new external reference to a symbol 'v' of type 'u' */
4672 static Sym
*external_sym(int v
, CType
*type
, int r
)
4678 /* push forward reference */
4679 s
= sym_push(v
, type
, r
| VT_CONST
| VT_SYM
, 0);
4680 s
->type
.t
|= VT_EXTERN
;
4682 if (!is_compatible_types(&s
->type
, type
))
4683 error("incompatible types for redefinition of '%s'",
4684 get_tok_str(v
, NULL
));
4689 /* push a reference to global symbol v */
4690 static void vpush_global_sym(CType
*type
, int v
)
4695 sym
= external_global_sym(v
, type
, 0);
4697 vsetc(type
, VT_CONST
| VT_SYM
, &cval
);
4701 void vset(CType
*type
, int r
, int v
)
4706 vsetc(type
, r
, &cval
);
4709 void vseti(int r
, int v
)
4725 void vpushv(SValue
*v
)
4727 if (vtop
>= vstack
+ (VSTACK_SIZE
- 1))
4728 error("memory full");
4738 /* save r to the memory stack, and mark it as being free */
4739 void save_reg(int r
)
4741 int l
, saved
, size
, align
;
4745 /* modify all stack values */
4748 for(p
=vstack
;p
<=vtop
;p
++) {
4749 if ((p
->r
& VT_VALMASK
) == r
||
4750 ((p
->type
.t
& VT_BTYPE
) == VT_LLONG
&& (p
->r2
& VT_VALMASK
) == r
)) {
4751 /* must save value on stack if not already done */
4753 /* NOTE: must reload 'r' because r might be equal to r2 */
4754 r
= p
->r
& VT_VALMASK
;
4755 /* store register in the stack */
4757 if ((p
->r
& VT_LVAL
) ||
4758 (!is_float(type
->t
) && (type
->t
& VT_BTYPE
) != VT_LLONG
))
4760 size
= type_size(type
, &align
);
4761 loc
= (loc
- size
) & -align
;
4762 sv
.type
.t
= type
->t
;
4763 sv
.r
= VT_LOCAL
| VT_LVAL
;
4766 #ifdef TCC_TARGET_I386
4767 /* x86 specific: need to pop fp register ST0 if saved */
4768 if (r
== TREG_ST0
) {
4769 o(0xd9dd); /* fstp %st(1) */
4772 /* special long long case */
4773 if ((type
->t
& VT_BTYPE
) == VT_LLONG
) {
4780 /* mark that stack entry as being saved on the stack */
4781 if (p
->r
& VT_LVAL
) {
4782 /* also clear the bounded flag because the
4783 relocation address of the function was stored in
4785 p
->r
= (p
->r
& ~(VT_VALMASK
| VT_BOUNDED
)) | VT_LLOCAL
;
4787 p
->r
= lvalue_type(p
->type
.t
) | VT_LOCAL
;
4795 /* find a register of class 'rc2' with at most one reference on stack.
4796 * If none, call get_reg(rc) */
4797 int get_reg_ex(int rc
, int rc2
)
4802 for(r
=0;r
<NB_REGS
;r
++) {
4803 if (reg_classes
[r
] & rc2
) {
4806 for(p
= vstack
; p
<= vtop
; p
++) {
4807 if ((p
->r
& VT_VALMASK
) == r
||
4808 (p
->r2
& VT_VALMASK
) == r
)
4818 /* find a free register of class 'rc'. If none, save one register */
4824 /* find a free register */
4825 for(r
=0;r
<NB_REGS
;r
++) {
4826 if (reg_classes
[r
] & rc
) {
4827 for(p
=vstack
;p
<=vtop
;p
++) {
4828 if ((p
->r
& VT_VALMASK
) == r
||
4829 (p
->r2
& VT_VALMASK
) == r
)
4837 /* no register left : free the first one on the stack (VERY
4838 IMPORTANT to start from the bottom to ensure that we don't
4839 spill registers used in gen_opi()) */
4840 for(p
=vstack
;p
<=vtop
;p
++) {
4841 r
= p
->r
& VT_VALMASK
;
4842 if (r
< VT_CONST
&& (reg_classes
[r
] & rc
))
4844 /* also look at second register (if long long) */
4845 r
= p
->r2
& VT_VALMASK
;
4846 if (r
< VT_CONST
&& (reg_classes
[r
] & rc
)) {
4852 /* Should never comes here */
4856 /* save registers up to (vtop - n) stack entry */
4857 void save_regs(int n
)
4862 for(p
= vstack
;p
<= p1
; p
++) {
4863 r
= p
->r
& VT_VALMASK
;
4870 /* move register 's' to 'r', and flush previous value of r to memory
4872 void move_reg(int r
, int s
)
4885 /* get address of vtop (vtop MUST BE an lvalue) */
4888 vtop
->r
&= ~VT_LVAL
;
4889 /* tricky: if saved lvalue, then we can go back to lvalue */
4890 if ((vtop
->r
& VT_VALMASK
) == VT_LLOCAL
)
4891 vtop
->r
= (vtop
->r
& ~(VT_VALMASK
| VT_LVAL_TYPE
)) | VT_LOCAL
| VT_LVAL
;
4894 #ifdef CONFIG_TCC_BCHECK
4895 /* generate lvalue bound code */
4901 vtop
->r
&= ~VT_MUSTBOUND
;
4902 /* if lvalue, then use checking code before dereferencing */
4903 if (vtop
->r
& VT_LVAL
) {
4904 /* if not VT_BOUNDED value, then make one */
4905 if (!(vtop
->r
& VT_BOUNDED
)) {
4906 lval_type
= vtop
->r
& (VT_LVAL_TYPE
| VT_LVAL
);
4907 /* must save type because we must set it to int to get pointer */
4909 vtop
->type
.t
= VT_INT
;
4912 gen_bounded_ptr_add();
4913 vtop
->r
|= lval_type
;
4916 /* then check for dereferencing */
4917 gen_bounded_ptr_deref();
4922 /* store vtop a register belonging to class 'rc'. lvalues are
4923 converted to values. Cannot be used if cannot be converted to
4924 register value (such as structures). */
4927 int r
, r2
, rc2
, bit_pos
, bit_size
, size
, align
, i
;
4928 unsigned long long ll
;
4930 /* NOTE: get_reg can modify vstack[] */
4931 if (vtop
->type
.t
& VT_BITFIELD
) {
4932 bit_pos
= (vtop
->type
.t
>> VT_STRUCT_SHIFT
) & 0x3f;
4933 bit_size
= (vtop
->type
.t
>> (VT_STRUCT_SHIFT
+ 6)) & 0x3f;
4934 /* remove bit field info to avoid loops */
4935 vtop
->type
.t
&= ~(VT_BITFIELD
| (-1 << VT_STRUCT_SHIFT
));
4936 /* generate shifts */
4937 vpushi(32 - (bit_pos
+ bit_size
));
4939 vpushi(32 - bit_size
);
4940 /* NOTE: transformed to SHR if unsigned */
4944 if (is_float(vtop
->type
.t
) &&
4945 (vtop
->r
& (VT_VALMASK
| VT_LVAL
)) == VT_CONST
) {
4948 unsigned long offset
;
4949 #if defined(TCC_TARGET_ARM) && !defined(TCC_ARM_VFP)
4953 /* XXX: unify with initializers handling ? */
4954 /* CPUs usually cannot use float constants, so we store them
4955 generically in data segment */
4956 size
= type_size(&vtop
->type
, &align
);
4957 offset
= (data_section
->data_offset
+ align
- 1) & -align
;
4958 data_section
->data_offset
= offset
;
4959 /* XXX: not portable yet */
4961 /* Zero pad x87 tenbyte long doubles */
4963 vtop
->c
.tab
[2] &= 0xffff;
4965 ptr
= section_ptr_add(data_section
, size
);
4967 #if defined(TCC_TARGET_ARM) && !defined(TCC_ARM_VFP)
4971 ptr
[i
] = vtop
->c
.tab
[size
-1-i
];
4975 ptr
[i
] = vtop
->c
.tab
[i
];
4976 sym
= get_sym_ref(&vtop
->type
, data_section
, offset
, size
<< 2);
4977 vtop
->r
|= VT_LVAL
| VT_SYM
;
4981 #ifdef CONFIG_TCC_BCHECK
4982 if (vtop
->r
& VT_MUSTBOUND
)
4986 r
= vtop
->r
& VT_VALMASK
;
4987 /* need to reload if:
4989 - lvalue (need to dereference pointer)
4990 - already a register, but not in the right class */
4991 if (r
>= VT_CONST
||
4992 (vtop
->r
& VT_LVAL
) ||
4993 !(reg_classes
[r
] & rc
) ||
4994 ((vtop
->type
.t
& VT_BTYPE
) == VT_LLONG
&&
4995 !(reg_classes
[vtop
->r2
] & rc
))) {
4997 if ((vtop
->type
.t
& VT_BTYPE
) == VT_LLONG
) {
4998 /* two register type load : expand to two words
5000 if ((vtop
->r
& (VT_VALMASK
| VT_LVAL
)) == VT_CONST
) {
5003 vtop
->c
.ui
= ll
; /* first word */
5005 vtop
->r
= r
; /* save register value */
5006 vpushi(ll
>> 32); /* second word */
5007 } else if (r
>= VT_CONST
|| /* XXX: test to VT_CONST incorrect ? */
5008 (vtop
->r
& VT_LVAL
)) {
5009 /* We do not want to modifier the long long
5010 pointer here, so the safest (and less
5011 efficient) is to save all the other registers
5012 in the stack. XXX: totally inefficient. */
5014 /* load from memory */
5017 vtop
[-1].r
= r
; /* save register value */
5018 /* increment pointer to get second word */
5019 vtop
->type
.t
= VT_INT
;
5025 /* move registers */
5028 vtop
[-1].r
= r
; /* save register value */
5029 vtop
->r
= vtop
[-1].r2
;
5031 /* allocate second register */
5038 /* write second register */
5040 } else if ((vtop
->r
& VT_LVAL
) && !is_float(vtop
->type
.t
)) {
5042 /* lvalue of scalar type : need to use lvalue type
5043 because of possible cast */
5046 /* compute memory access type */
5047 if (vtop
->r
& VT_LVAL_BYTE
)
5049 else if (vtop
->r
& VT_LVAL_SHORT
)
5051 if (vtop
->r
& VT_LVAL_UNSIGNED
)
5055 /* restore wanted type */
5058 /* one register type load */
5063 #ifdef TCC_TARGET_C67
5064 /* uses register pairs for doubles */
5065 if ((vtop
->type
.t
& VT_BTYPE
) == VT_DOUBLE
)
5072 /* generate vtop[-1] and vtop[0] in resp. classes rc1 and rc2 */
5073 void gv2(int rc1
, int rc2
)
5077 /* generate more generic register first. But VT_JMP or VT_CMP
5078 values must be generated first in all cases to avoid possible
5080 v
= vtop
[0].r
& VT_VALMASK
;
5081 if (v
!= VT_CMP
&& (v
& ~1) != VT_JMP
&& rc1
<= rc2
) {
5086 /* test if reload is needed for first register */
5087 if ((vtop
[-1].r
& VT_VALMASK
) >= VT_CONST
) {
5097 /* test if reload is needed for first register */
5098 if ((vtop
[0].r
& VT_VALMASK
) >= VT_CONST
) {
5104 /* expand long long on stack in two int registers */
5109 u
= vtop
->type
.t
& VT_UNSIGNED
;
5112 vtop
[0].r
= vtop
[-1].r2
;
5113 vtop
[0].r2
= VT_CONST
;
5114 vtop
[-1].r2
= VT_CONST
;
5115 vtop
[0].type
.t
= VT_INT
| u
;
5116 vtop
[-1].type
.t
= VT_INT
| u
;
5119 #ifdef TCC_TARGET_ARM
5120 /* expand long long on stack */
5121 void lexpand_nr(void)
5125 u
= vtop
->type
.t
& VT_UNSIGNED
;
5127 vtop
->r2
= VT_CONST
;
5128 vtop
->type
.t
= VT_INT
| u
;
5129 v
=vtop
[-1].r
& (VT_VALMASK
| VT_LVAL
);
5130 if (v
== VT_CONST
) {
5131 vtop
[-1].c
.ui
= vtop
->c
.ull
;
5132 vtop
->c
.ui
= vtop
->c
.ull
>> 32;
5134 } else if (v
== (VT_LVAL
|VT_CONST
) || v
== (VT_LVAL
|VT_LOCAL
)) {
5136 vtop
->r
= vtop
[-1].r
;
5137 } else if (v
> VT_CONST
) {
5141 vtop
->r
= vtop
[-1].r2
;
5142 vtop
[-1].r2
= VT_CONST
;
5143 vtop
[-1].type
.t
= VT_INT
| u
;
5147 /* build a long long from two ints */
5150 gv2(RC_INT
, RC_INT
);
5151 vtop
[-1].r2
= vtop
[0].r
;
5152 vtop
[-1].type
.t
= t
;
5156 /* rotate n first stack elements to the bottom
5157 I1 ... In -> I2 ... In I1 [top is right]
5165 for(i
=-n
+1;i
!=0;i
++)
5166 vtop
[i
] = vtop
[i
+1];
5170 /* rotate n first stack elements to the top
5171 I1 ... In -> In I1 ... I(n-1) [top is right]
5179 for(i
= 0;i
< n
- 1; i
++)
5180 vtop
[-i
] = vtop
[-i
- 1];
5184 #ifdef TCC_TARGET_ARM
5185 /* like vrott but in other direction
5186 In ... I1 -> I(n-1) ... I1 In [top is right]
5194 for(i
= n
- 1; i
> 0; i
--)
5195 vtop
[-i
] = vtop
[-i
+ 1];
5200 /* pop stack value */
5204 v
= vtop
->r
& VT_VALMASK
;
5205 #ifdef TCC_TARGET_I386
5206 /* for x86, we need to pop the FP stack */
5207 if (v
== TREG_ST0
&& !nocode_wanted
) {
5208 o(0xd9dd); /* fstp %st(1) */
5211 if (v
== VT_JMP
|| v
== VT_JMPI
) {
5212 /* need to put correct jump if && or || without test */
5218 /* convert stack entry to register and duplicate its value in another
5226 if ((t
& VT_BTYPE
) == VT_LLONG
) {
5233 /* stack: H L L1 H1 */
5241 /* duplicate value */
5252 load(r1
, &sv
); /* move r to r1 */
5254 /* duplicates value */
5259 /* generate CPU independent (unsigned) long long operations */
5260 void gen_opl(int op
)
5262 int t
, a
, b
, op1
, c
, i
;
5269 func
= TOK___divdi3
;
5272 func
= TOK___udivdi3
;
5275 func
= TOK___moddi3
;
5278 func
= TOK___umoddi3
;
5280 /* call generic long long function */
5281 vpush_global_sym(&func_old_type
, func
);
5286 vtop
->r2
= REG_LRET
;
5299 /* stack: L1 H1 L2 H2 */
5304 vtop
[-2] = vtop
[-3];
5307 /* stack: H1 H2 L1 L2 */
5313 /* stack: H1 H2 L1 L2 ML MH */
5316 /* stack: ML MH H1 H2 L1 L2 */
5320 /* stack: ML MH H1 L2 H2 L1 */
5325 /* stack: ML MH M1 M2 */
5328 } else if (op
== '+' || op
== '-') {
5329 /* XXX: add non carry method too (for MIPS or alpha) */
5335 /* stack: H1 H2 (L1 op L2) */
5338 gen_op(op1
+ 1); /* TOK_xxxC2 */
5341 /* stack: H1 H2 (L1 op L2) */
5344 /* stack: (L1 op L2) H1 H2 */
5346 /* stack: (L1 op L2) (H1 op H2) */
5354 if ((vtop
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
) {
5355 t
= vtop
[-1].type
.t
;
5359 /* stack: L H shift */
5361 /* constant: simpler */
5362 /* NOTE: all comments are for SHL. the other cases are
5363 done by swaping words */
5374 if (op
!= TOK_SAR
) {
5407 /* XXX: should provide a faster fallback on x86 ? */
5410 func
= TOK___sardi3
;
5413 func
= TOK___shrdi3
;
5416 func
= TOK___shldi3
;
5422 /* compare operations */
5428 /* stack: L1 H1 L2 H2 */
5430 vtop
[-1] = vtop
[-2];
5432 /* stack: L1 L2 H1 H2 */
5435 /* when values are equal, we need to compare low words. since
5436 the jump is inverted, we invert the test too. */
5439 else if (op1
== TOK_GT
)
5441 else if (op1
== TOK_ULT
)
5443 else if (op1
== TOK_UGT
)
5448 if (op1
!= TOK_NE
) {
5452 /* generate non equal test */
5453 /* XXX: NOT PORTABLE yet */
5457 #if defined(TCC_TARGET_I386)
5458 b
= psym(0x850f, 0);
5459 #elif defined(TCC_TARGET_ARM)
5461 o(0x1A000000 | encbranch(ind
, 0, 1));
5462 #elif defined(TCC_TARGET_C67)
5463 error("not implemented");
5465 #error not supported
5469 /* compare low. Always unsigned */
5473 else if (op1
== TOK_LE
)
5475 else if (op1
== TOK_GT
)
5477 else if (op1
== TOK_GE
)
5487 /* handle integer constant optimizations and various machine
5489 void gen_opic(int op
)
5491 int c1
, c2
, t1
, t2
, n
;
5494 typedef unsigned long long U
;
5498 t1
= v1
->type
.t
& VT_BTYPE
;
5499 t2
= v2
->type
.t
& VT_BTYPE
;
5500 l1
= (t1
== VT_LLONG
) ? v1
->c
.ll
: v1
->c
.i
;
5501 l2
= (t2
== VT_LLONG
) ? v2
->c
.ll
: v2
->c
.i
;
5503 /* currently, we cannot do computations with forward symbols */
5504 c1
= (v1
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
;
5505 c2
= (v2
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
;
5508 case '+': l1
+= l2
; break;
5509 case '-': l1
-= l2
; break;
5510 case '&': l1
&= l2
; break;
5511 case '^': l1
^= l2
; break;
5512 case '|': l1
|= l2
; break;
5513 case '*': l1
*= l2
; break;
5520 /* if division by zero, generate explicit division */
5523 error("division by zero in constant");
5527 default: l1
/= l2
; break;
5528 case '%': l1
%= l2
; break;
5529 case TOK_UDIV
: l1
= (U
)l1
/ l2
; break;
5530 case TOK_UMOD
: l1
= (U
)l1
% l2
; break;
5533 case TOK_SHL
: l1
<<= l2
; break;
5534 case TOK_SHR
: l1
= (U
)l1
>> l2
; break;
5535 case TOK_SAR
: l1
>>= l2
; break;
5537 case TOK_ULT
: l1
= (U
)l1
< (U
)l2
; break;
5538 case TOK_UGE
: l1
= (U
)l1
>= (U
)l2
; break;
5539 case TOK_EQ
: l1
= l1
== l2
; break;
5540 case TOK_NE
: l1
= l1
!= l2
; break;
5541 case TOK_ULE
: l1
= (U
)l1
<= (U
)l2
; break;
5542 case TOK_UGT
: l1
= (U
)l1
> (U
)l2
; break;
5543 case TOK_LT
: l1
= l1
< l2
; break;
5544 case TOK_GE
: l1
= l1
>= l2
; break;
5545 case TOK_LE
: l1
= l1
<= l2
; break;
5546 case TOK_GT
: l1
= l1
> l2
; break;
5548 case TOK_LAND
: l1
= l1
&& l2
; break;
5549 case TOK_LOR
: l1
= l1
|| l2
; break;
5556 /* if commutative ops, put c2 as constant */
5557 if (c1
&& (op
== '+' || op
== '&' || op
== '^' ||
5558 op
== '|' || op
== '*')) {
5560 c2
= c1
; //c = c1, c1 = c2, c2 = c;
5561 l2
= l1
; //l = l1, l1 = l2, l2 = l;
5563 /* Filter out NOP operations like x*1, x-0, x&-1... */
5564 if (c2
&& (((op
== '*' || op
== '/' || op
== TOK_UDIV
||
5567 ((op
== '+' || op
== '-' || op
== '|' || op
== '^' ||
5568 op
== TOK_SHL
|| op
== TOK_SHR
|| op
== TOK_SAR
) &&
5574 } else if (c2
&& (op
== '*' || op
== TOK_PDIV
|| op
== TOK_UDIV
)) {
5575 /* try to use shifts instead of muls or divs */
5576 if (l2
> 0 && (l2
& (l2
- 1)) == 0) {
5585 else if (op
== TOK_PDIV
)
5591 } else if (c2
&& (op
== '+' || op
== '-') &&
5592 (vtop
[-1].r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) ==
5593 (VT_CONST
| VT_SYM
)) {
5594 /* symbol + constant case */
5601 if (!nocode_wanted
) {
5602 /* call low level op generator */
5603 if (t1
== VT_LLONG
|| t2
== VT_LLONG
)
5614 /* generate a floating point operation with constant propagation */
5615 void gen_opif(int op
)
5623 /* currently, we cannot do computations with forward symbols */
5624 c1
= (v1
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
;
5625 c2
= (v2
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
;
5627 if (v1
->type
.t
== VT_FLOAT
) {
5630 } else if (v1
->type
.t
== VT_DOUBLE
) {
5638 /* NOTE: we only do constant propagation if finite number (not
5639 NaN or infinity) (ANSI spec) */
5640 if (!ieee_finite(f1
) || !ieee_finite(f2
))
5644 case '+': f1
+= f2
; break;
5645 case '-': f1
-= f2
; break;
5646 case '*': f1
*= f2
; break;
5650 error("division by zero in constant");
5655 /* XXX: also handles tests ? */
5659 /* XXX: overflow test ? */
5660 if (v1
->type
.t
== VT_FLOAT
) {
5662 } else if (v1
->type
.t
== VT_DOUBLE
) {
5670 if (!nocode_wanted
) {
5678 static int pointed_size(CType
*type
)
5681 return type_size(pointed_type(type
), &align
);
5684 static inline int is_null_pointer(SValue
*p
)
5686 if ((p
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) != VT_CONST
)
5688 return ((p
->type
.t
& VT_BTYPE
) == VT_INT
&& p
->c
.i
== 0) ||
5689 ((p
->type
.t
& VT_BTYPE
) == VT_LLONG
&& p
->c
.ll
== 0);
5692 static inline int is_integer_btype(int bt
)
5694 return (bt
== VT_BYTE
|| bt
== VT_SHORT
||
5695 bt
== VT_INT
|| bt
== VT_LLONG
);
5698 /* check types for comparison or substraction of pointers */
5699 static void check_comparison_pointer_types(SValue
*p1
, SValue
*p2
, int op
)
5701 CType
*type1
, *type2
, tmp_type1
, tmp_type2
;
5704 /* null pointers are accepted for all comparisons as gcc */
5705 if (is_null_pointer(p1
) || is_null_pointer(p2
))
5709 bt1
= type1
->t
& VT_BTYPE
;
5710 bt2
= type2
->t
& VT_BTYPE
;
5711 /* accept comparison between pointer and integer with a warning */
5712 if ((is_integer_btype(bt1
) || is_integer_btype(bt2
)) && op
!= '-') {
5713 if (op
!= TOK_LOR
&& op
!= TOK_LAND
)
5714 warning("comparison between pointer and integer");
5718 /* both must be pointers or implicit function pointers */
5719 if (bt1
== VT_PTR
) {
5720 type1
= pointed_type(type1
);
5721 } else if (bt1
!= VT_FUNC
)
5722 goto invalid_operands
;
5724 if (bt2
== VT_PTR
) {
5725 type2
= pointed_type(type2
);
5726 } else if (bt2
!= VT_FUNC
) {
5728 error("invalid operands to binary %s", get_tok_str(op
, NULL
));
5730 if ((type1
->t
& VT_BTYPE
) == VT_VOID
||
5731 (type2
->t
& VT_BTYPE
) == VT_VOID
)
5735 tmp_type1
.t
&= ~(VT_UNSIGNED
| VT_CONSTANT
| VT_VOLATILE
);
5736 tmp_type2
.t
&= ~(VT_UNSIGNED
| VT_CONSTANT
| VT_VOLATILE
);
5737 if (!is_compatible_types(&tmp_type1
, &tmp_type2
)) {
5738 /* gcc-like error if '-' is used */
5740 goto invalid_operands
;
5742 warning("comparison of distinct pointer types lacks a cast");
5746 /* generic gen_op: handles types problems */
5749 int u
, t1
, t2
, bt1
, bt2
, t
;
5752 t1
= vtop
[-1].type
.t
;
5753 t2
= vtop
[0].type
.t
;
5754 bt1
= t1
& VT_BTYPE
;
5755 bt2
= t2
& VT_BTYPE
;
5757 if (bt1
== VT_PTR
|| bt2
== VT_PTR
) {
5758 /* at least one operand is a pointer */
5759 /* relationnal op: must be both pointers */
5760 if (op
>= TOK_ULT
&& op
<= TOK_LOR
) {
5761 check_comparison_pointer_types(vtop
- 1, vtop
, op
);
5762 /* pointers are handled are unsigned */
5763 t
= VT_INT
| VT_UNSIGNED
;
5766 /* if both pointers, then it must be the '-' op */
5767 if (bt1
== VT_PTR
&& bt2
== VT_PTR
) {
5769 error("cannot use pointers here");
5770 check_comparison_pointer_types(vtop
- 1, vtop
, op
);
5771 /* XXX: check that types are compatible */
5772 u
= pointed_size(&vtop
[-1].type
);
5774 /* set to integer type */
5775 vtop
->type
.t
= VT_INT
;
5779 /* exactly one pointer : must be '+' or '-'. */
5780 if (op
!= '-' && op
!= '+')
5781 error("cannot use pointers here");
5782 /* Put pointer as first operand */
5783 if (bt2
== VT_PTR
) {
5787 type1
= vtop
[-1].type
;
5788 /* XXX: cast to int ? (long long case) */
5789 vpushi(pointed_size(&vtop
[-1].type
));
5791 #ifdef CONFIG_TCC_BCHECK
5792 /* if evaluating constant expression, no code should be
5793 generated, so no bound check */
5794 if (do_bounds_check
&& !const_wanted
) {
5795 /* if bounded pointers, we generate a special code to
5802 gen_bounded_ptr_add();
5808 /* put again type if gen_opic() swaped operands */
5811 } else if (is_float(bt1
) || is_float(bt2
)) {
5812 /* compute bigger type and do implicit casts */
5813 if (bt1
== VT_LDOUBLE
|| bt2
== VT_LDOUBLE
) {
5815 } else if (bt1
== VT_DOUBLE
|| bt2
== VT_DOUBLE
) {
5820 /* floats can only be used for a few operations */
5821 if (op
!= '+' && op
!= '-' && op
!= '*' && op
!= '/' &&
5822 (op
< TOK_ULT
|| op
> TOK_GT
))
5823 error("invalid operands for binary operation");
5825 } else if (bt1
== VT_LLONG
|| bt2
== VT_LLONG
) {
5826 /* cast to biggest op */
5828 /* convert to unsigned if it does not fit in a long long */
5829 if ((t1
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_LLONG
| VT_UNSIGNED
) ||
5830 (t2
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_LLONG
| VT_UNSIGNED
))
5834 /* integer operations */
5836 /* convert to unsigned if it does not fit in an integer */
5837 if ((t1
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_INT
| VT_UNSIGNED
) ||
5838 (t2
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_INT
| VT_UNSIGNED
))
5841 /* XXX: currently, some unsigned operations are explicit, so
5842 we modify them here */
5843 if (t
& VT_UNSIGNED
) {
5850 else if (op
== TOK_LT
)
5852 else if (op
== TOK_GT
)
5854 else if (op
== TOK_LE
)
5856 else if (op
== TOK_GE
)
5863 /* special case for shifts and long long: we keep the shift as
5865 if (op
== TOK_SHR
|| op
== TOK_SAR
|| op
== TOK_SHL
)
5872 if (op
>= TOK_ULT
&& op
<= TOK_GT
) {
5873 /* relationnal op: the result is an int */
5874 vtop
->type
.t
= VT_INT
;
5881 /* generic itof for unsigned long long case */
5882 void gen_cvt_itof1(int t
)
5884 if ((vtop
->type
.t
& (VT_BTYPE
| VT_UNSIGNED
)) ==
5885 (VT_LLONG
| VT_UNSIGNED
)) {
5888 vpush_global_sym(&func_old_type
, TOK___ulltof
);
5889 else if (t
== VT_DOUBLE
)
5890 vpush_global_sym(&func_old_type
, TOK___ulltod
);
5892 vpush_global_sym(&func_old_type
, TOK___ulltold
);
5902 /* generic ftoi for unsigned long long case */
5903 void gen_cvt_ftoi1(int t
)
5907 if (t
== (VT_LLONG
| VT_UNSIGNED
)) {
5908 /* not handled natively */
5909 st
= vtop
->type
.t
& VT_BTYPE
;
5911 vpush_global_sym(&func_old_type
, TOK___fixunssfdi
);
5912 else if (st
== VT_DOUBLE
)
5913 vpush_global_sym(&func_old_type
, TOK___fixunsdfdi
);
5915 vpush_global_sym(&func_old_type
, TOK___fixunsxfdi
);
5920 vtop
->r2
= REG_LRET
;
5926 /* force char or short cast */
5927 void force_charshort_cast(int t
)
5931 /* XXX: add optimization if lvalue : just change type and offset */
5936 if (t
& VT_UNSIGNED
) {
5937 vpushi((1 << bits
) - 1);
5943 /* result must be signed or the SAR is converted to an SHL
5944 This was not the case when "t" was a signed short
5945 and the last value on the stack was an unsigned int */
5946 vtop
->type
.t
&= ~VT_UNSIGNED
;
5952 /* cast 'vtop' to 'type'. Casting to bitfields is forbidden. */
5953 static void gen_cast(CType
*type
)
5955 int sbt
, dbt
, sf
, df
, c
;
5957 /* special delayed cast for char/short */
5958 /* XXX: in some cases (multiple cascaded casts), it may still
5960 if (vtop
->r
& VT_MUSTCAST
) {
5961 vtop
->r
&= ~VT_MUSTCAST
;
5962 force_charshort_cast(vtop
->type
.t
);
5965 /* bitfields first get cast to ints */
5966 if (vtop
->type
.t
& VT_BITFIELD
) {
5970 dbt
= type
->t
& (VT_BTYPE
| VT_UNSIGNED
);
5971 sbt
= vtop
->type
.t
& (VT_BTYPE
| VT_UNSIGNED
);
5973 if (sbt
!= dbt
&& !nocode_wanted
) {
5976 c
= (vtop
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
;
5978 /* convert from fp to fp */
5980 /* constant case: we can do it now */
5981 /* XXX: in ISOC, cannot do it if error in convert */
5982 if (dbt
== VT_FLOAT
&& sbt
== VT_DOUBLE
)
5983 vtop
->c
.f
= (float)vtop
->c
.d
;
5984 else if (dbt
== VT_FLOAT
&& sbt
== VT_LDOUBLE
)
5985 vtop
->c
.f
= (float)vtop
->c
.ld
;
5986 else if (dbt
== VT_DOUBLE
&& sbt
== VT_FLOAT
)
5987 vtop
->c
.d
= (double)vtop
->c
.f
;
5988 else if (dbt
== VT_DOUBLE
&& sbt
== VT_LDOUBLE
)
5989 vtop
->c
.d
= (double)vtop
->c
.ld
;
5990 else if (dbt
== VT_LDOUBLE
&& sbt
== VT_FLOAT
)
5991 vtop
->c
.ld
= (long double)vtop
->c
.f
;
5992 else if (dbt
== VT_LDOUBLE
&& sbt
== VT_DOUBLE
)
5993 vtop
->c
.ld
= (long double)vtop
->c
.d
;
5995 /* non constant case: generate code */
5999 /* convert int to fp */
6002 case VT_LLONG
| VT_UNSIGNED
:
6004 /* XXX: add const cases for long long */
6006 case VT_INT
| VT_UNSIGNED
:
6008 case VT_FLOAT
: vtop
->c
.f
= (float)vtop
->c
.ui
; break;
6009 case VT_DOUBLE
: vtop
->c
.d
= (double)vtop
->c
.ui
; break;
6010 case VT_LDOUBLE
: vtop
->c
.ld
= (long double)vtop
->c
.ui
; break;
6015 case VT_FLOAT
: vtop
->c
.f
= (float)vtop
->c
.i
; break;
6016 case VT_DOUBLE
: vtop
->c
.d
= (double)vtop
->c
.i
; break;
6017 case VT_LDOUBLE
: vtop
->c
.ld
= (long double)vtop
->c
.i
; break;
6023 #if !defined(TCC_TARGET_ARM)
6030 /* convert fp to int */
6031 if (dbt
== VT_BOOL
) {
6035 /* we handle char/short/etc... with generic code */
6036 if (dbt
!= (VT_INT
| VT_UNSIGNED
) &&
6037 dbt
!= (VT_LLONG
| VT_UNSIGNED
) &&
6042 case VT_LLONG
| VT_UNSIGNED
:
6044 /* XXX: add const cases for long long */
6046 case VT_INT
| VT_UNSIGNED
:
6048 case VT_FLOAT
: vtop
->c
.ui
= (unsigned int)vtop
->c
.d
; break;
6049 case VT_DOUBLE
: vtop
->c
.ui
= (unsigned int)vtop
->c
.d
; break;
6050 case VT_LDOUBLE
: vtop
->c
.ui
= (unsigned int)vtop
->c
.d
; break;
6056 case VT_FLOAT
: vtop
->c
.i
= (int)vtop
->c
.d
; break;
6057 case VT_DOUBLE
: vtop
->c
.i
= (int)vtop
->c
.d
; break;
6058 case VT_LDOUBLE
: vtop
->c
.i
= (int)vtop
->c
.d
; break;
6066 if (dbt
== VT_INT
&& (type
->t
& (VT_BTYPE
| VT_UNSIGNED
)) != dbt
) {
6067 /* additional cast for char/short... */
6072 } else if ((dbt
& VT_BTYPE
) == VT_LLONG
) {
6073 if ((sbt
& VT_BTYPE
) != VT_LLONG
) {
6074 /* scalar to long long */
6076 if (sbt
== (VT_INT
| VT_UNSIGNED
))
6077 vtop
->c
.ll
= vtop
->c
.ui
;
6079 vtop
->c
.ll
= vtop
->c
.i
;
6081 /* machine independent conversion */
6083 /* generate high word */
6084 if (sbt
== (VT_INT
| VT_UNSIGNED
)) {
6092 /* patch second register */
6093 vtop
[-1].r2
= vtop
->r
;
6097 } else if (dbt
== VT_BOOL
) {
6098 /* scalar to bool */
6101 } else if ((dbt
& VT_BTYPE
) == VT_BYTE
||
6102 (dbt
& VT_BTYPE
) == VT_SHORT
) {
6103 if (sbt
== VT_PTR
) {
6104 vtop
->type
.t
= VT_INT
;
6105 warning("nonportable conversion from pointer to char/short");
6107 force_charshort_cast(dbt
);
6108 } else if ((dbt
& VT_BTYPE
) == VT_INT
) {
6110 if (sbt
== VT_LLONG
) {
6111 /* from long long: just take low order word */
6115 /* if lvalue and single word type, nothing to do because
6116 the lvalue already contains the real type size (see
6117 VT_LVAL_xxx constants) */
6119 } else if ((dbt
& VT_BTYPE
) == VT_PTR
&& !(vtop
->r
& VT_LVAL
)) {
6120 /* if we are casting between pointer types,
6121 we must update the VT_LVAL_xxx size */
6122 vtop
->r
= (vtop
->r
& ~VT_LVAL_TYPE
)
6123 | (lvalue_type(type
->ref
->type
.t
) & VT_LVAL_TYPE
);
6128 /* return type size. Put alignment at 'a' */
6129 static int type_size(CType
*type
, int *a
)
6134 bt
= type
->t
& VT_BTYPE
;
6135 if (bt
== VT_STRUCT
) {
6140 } else if (bt
== VT_PTR
) {
6141 if (type
->t
& VT_ARRAY
) {
6143 return type_size(&s
->type
, a
) * s
->c
;
6148 } else if (bt
== VT_LDOUBLE
) {
6150 return LDOUBLE_SIZE
;
6151 } else if (bt
== VT_DOUBLE
|| bt
== VT_LLONG
) {
6152 #ifdef TCC_TARGET_I386
6154 #elif defined(TCC_TARGET_ARM)
6164 } else if (bt
== VT_INT
|| bt
== VT_ENUM
|| bt
== VT_FLOAT
) {
6167 } else if (bt
== VT_SHORT
) {
6171 /* char, void, function, _Bool */
6177 /* return the pointed type of t */
6178 static inline CType
*pointed_type(CType
*type
)
6180 return &type
->ref
->type
;
6183 /* modify type so that its it is a pointer to type. */
6184 static void mk_pointer(CType
*type
)
6187 s
= sym_push(SYM_FIELD
, type
, 0, -1);
6188 type
->t
= VT_PTR
| (type
->t
& ~VT_TYPE
);
6192 /* compare function types. OLD functions match any new functions */
6193 static int is_compatible_func(CType
*type1
, CType
*type2
)
6199 if (!is_compatible_types(&s1
->type
, &s2
->type
))
6201 /* check func_call */
6202 if (FUNC_CALL(s1
->r
) != FUNC_CALL(s2
->r
))
6204 /* XXX: not complete */
6205 if (s1
->c
== FUNC_OLD
|| s2
->c
== FUNC_OLD
)
6209 while (s1
!= NULL
) {
6212 if (!is_compatible_parameter_types(&s1
->type
, &s2
->type
))
6222 /* return true if type1 and type2 are the same. If unqualified is
6223 true, qualifiers on the types are ignored.
6225 - enums are not checked as gcc __builtin_types_compatible_p ()
6227 static int compare_types(CType
*type1
, CType
*type2
, int unqualified
)
6231 t1
= type1
->t
& VT_TYPE
;
6232 t2
= type2
->t
& VT_TYPE
;
6234 /* strip qualifiers before comparing */
6235 t1
&= ~(VT_CONSTANT
| VT_VOLATILE
);
6236 t2
&= ~(VT_CONSTANT
| VT_VOLATILE
);
6238 /* XXX: bitfields ? */
6241 /* test more complicated cases */
6242 bt1
= t1
& VT_BTYPE
;
6243 if (bt1
== VT_PTR
) {
6244 type1
= pointed_type(type1
);
6245 type2
= pointed_type(type2
);
6246 return is_compatible_types(type1
, type2
);
6247 } else if (bt1
== VT_STRUCT
) {
6248 return (type1
->ref
== type2
->ref
);
6249 } else if (bt1
== VT_FUNC
) {
6250 return is_compatible_func(type1
, type2
);
6256 /* return true if type1 and type2 are exactly the same (including
6259 static int is_compatible_types(CType
*type1
, CType
*type2
)
6261 return compare_types(type1
,type2
,0);
6264 /* return true if type1 and type2 are the same (ignoring qualifiers).
6266 static int is_compatible_parameter_types(CType
*type1
, CType
*type2
)
6268 return compare_types(type1
,type2
,1);
6271 /* print a type. If 'varstr' is not NULL, then the variable is also
6272 printed in the type */
6274 /* XXX: add array and function pointers */
6275 void type_to_str(char *buf
, int buf_size
,
6276 CType
*type
, const char *varstr
)
6283 t
= type
->t
& VT_TYPE
;
6286 if (t
& VT_CONSTANT
)
6287 pstrcat(buf
, buf_size
, "const ");
6288 if (t
& VT_VOLATILE
)
6289 pstrcat(buf
, buf_size
, "volatile ");
6290 if (t
& VT_UNSIGNED
)
6291 pstrcat(buf
, buf_size
, "unsigned ");
6321 tstr
= "long double";
6323 pstrcat(buf
, buf_size
, tstr
);
6327 if (bt
== VT_STRUCT
)
6331 pstrcat(buf
, buf_size
, tstr
);
6332 v
= type
->ref
->v
& ~SYM_STRUCT
;
6333 if (v
>= SYM_FIRST_ANOM
)
6334 pstrcat(buf
, buf_size
, "<anonymous>");
6336 pstrcat(buf
, buf_size
, get_tok_str(v
, NULL
));
6340 type_to_str(buf
, buf_size
, &s
->type
, varstr
);
6341 pstrcat(buf
, buf_size
, "(");
6343 while (sa
!= NULL
) {
6344 type_to_str(buf1
, sizeof(buf1
), &sa
->type
, NULL
);
6345 pstrcat(buf
, buf_size
, buf1
);
6348 pstrcat(buf
, buf_size
, ", ");
6350 pstrcat(buf
, buf_size
, ")");
6354 pstrcpy(buf1
, sizeof(buf1
), "*");
6356 pstrcat(buf1
, sizeof(buf1
), varstr
);
6357 type_to_str(buf
, buf_size
, &s
->type
, buf1
);
6361 pstrcat(buf
, buf_size
, " ");
6362 pstrcat(buf
, buf_size
, varstr
);
6367 /* verify type compatibility to store vtop in 'dt' type, and generate
6369 static void gen_assign_cast(CType
*dt
)
6371 CType
*st
, *type1
, *type2
, tmp_type1
, tmp_type2
;
6372 char buf1
[256], buf2
[256];
6375 st
= &vtop
->type
; /* source type */
6376 dbt
= dt
->t
& VT_BTYPE
;
6377 sbt
= st
->t
& VT_BTYPE
;
6378 if (dt
->t
& VT_CONSTANT
)
6379 warning("assignment of read-only location");
6382 /* special cases for pointers */
6383 /* '0' can also be a pointer */
6384 if (is_null_pointer(vtop
))
6386 /* accept implicit pointer to integer cast with warning */
6387 if (is_integer_btype(sbt
)) {
6388 warning("assignment makes pointer from integer without a cast");
6391 type1
= pointed_type(dt
);
6392 /* a function is implicitely a function pointer */
6393 if (sbt
== VT_FUNC
) {
6394 if ((type1
->t
& VT_BTYPE
) != VT_VOID
&&
6395 !is_compatible_types(pointed_type(dt
), st
))
6402 type2
= pointed_type(st
);
6403 if ((type1
->t
& VT_BTYPE
) == VT_VOID
||
6404 (type2
->t
& VT_BTYPE
) == VT_VOID
) {
6405 /* void * can match anything */
6407 /* exact type match, except for unsigned */
6410 tmp_type1
.t
&= ~(VT_UNSIGNED
| VT_CONSTANT
| VT_VOLATILE
);
6411 tmp_type2
.t
&= ~(VT_UNSIGNED
| VT_CONSTANT
| VT_VOLATILE
);
6412 if (!is_compatible_types(&tmp_type1
, &tmp_type2
))
6413 warning("assignment from incompatible pointer type");
6415 /* check const and volatile */
6416 if ((!(type1
->t
& VT_CONSTANT
) && (type2
->t
& VT_CONSTANT
)) ||
6417 (!(type1
->t
& VT_VOLATILE
) && (type2
->t
& VT_VOLATILE
)))
6418 warning("assignment discards qualifiers from pointer target type");
6424 if (sbt
== VT_PTR
|| sbt
== VT_FUNC
) {
6425 warning("assignment makes integer from pointer without a cast");
6427 /* XXX: more tests */
6432 tmp_type1
.t
&= ~(VT_CONSTANT
| VT_VOLATILE
);
6433 tmp_type2
.t
&= ~(VT_CONSTANT
| VT_VOLATILE
);
6434 if (!is_compatible_types(&tmp_type1
, &tmp_type2
)) {
6436 type_to_str(buf1
, sizeof(buf1
), st
, NULL
);
6437 type_to_str(buf2
, sizeof(buf2
), dt
, NULL
);
6438 error("cannot cast '%s' to '%s'", buf1
, buf2
);
6446 /* store vtop in lvalue pushed on stack */
6449 int sbt
, dbt
, ft
, r
, t
, size
, align
, bit_size
, bit_pos
, rc
, delayed_cast
;
6451 ft
= vtop
[-1].type
.t
;
6452 sbt
= vtop
->type
.t
& VT_BTYPE
;
6453 dbt
= ft
& VT_BTYPE
;
6454 if (((sbt
== VT_INT
|| sbt
== VT_SHORT
) && dbt
== VT_BYTE
) ||
6455 (sbt
== VT_INT
&& dbt
== VT_SHORT
)) {
6456 /* optimize char/short casts */
6457 delayed_cast
= VT_MUSTCAST
;
6458 vtop
->type
.t
= ft
& VT_TYPE
;
6459 /* XXX: factorize */
6460 if (ft
& VT_CONSTANT
)
6461 warning("assignment of read-only location");
6464 if (!(ft
& VT_BITFIELD
))
6465 gen_assign_cast(&vtop
[-1].type
);
6468 if (sbt
== VT_STRUCT
) {
6469 /* if structure, only generate pointer */
6470 /* structure assignment : generate memcpy */
6471 /* XXX: optimize if small size */
6472 if (!nocode_wanted
) {
6473 size
= type_size(&vtop
->type
, &align
);
6477 vpush_global_sym(&func_old_type
, TOK_memcpy8
);
6478 else if(!(align
& 3))
6479 vpush_global_sym(&func_old_type
, TOK_memcpy4
);
6482 vpush_global_sym(&func_old_type
, TOK_memcpy
);
6486 vtop
->type
.t
= VT_INT
;
6490 vtop
->type
.t
= VT_INT
;
6502 /* leave source on stack */
6503 } else if (ft
& VT_BITFIELD
) {
6504 /* bitfield store handling */
6505 bit_pos
= (ft
>> VT_STRUCT_SHIFT
) & 0x3f;
6506 bit_size
= (ft
>> (VT_STRUCT_SHIFT
+ 6)) & 0x3f;
6507 /* remove bit field info to avoid loops */
6508 vtop
[-1].type
.t
= ft
& ~(VT_BITFIELD
| (-1 << VT_STRUCT_SHIFT
));
6510 /* duplicate source into other register */
6515 /* duplicate destination */
6517 vtop
[-1] = vtop
[-2];
6519 /* mask and shift source */
6520 vpushi((1 << bit_size
) - 1);
6524 /* load destination, mask and or with source */
6526 vpushi(~(((1 << bit_size
) - 1) << bit_pos
));
6532 /* pop off shifted source from "duplicate source..." above */
6536 #ifdef CONFIG_TCC_BCHECK
6537 /* bound check case */
6538 if (vtop
[-1].r
& VT_MUSTBOUND
) {
6544 if (!nocode_wanted
) {
6548 r
= gv(rc
); /* generate value */
6549 /* if lvalue was saved on stack, must read it */
6550 if ((vtop
[-1].r
& VT_VALMASK
) == VT_LLOCAL
) {
6552 t
= get_reg(RC_INT
);
6554 sv
.r
= VT_LOCAL
| VT_LVAL
;
6555 sv
.c
.ul
= vtop
[-1].c
.ul
;
6557 vtop
[-1].r
= t
| VT_LVAL
;
6560 /* two word case handling : store second register at word + 4 */
6561 if ((ft
& VT_BTYPE
) == VT_LLONG
) {
6563 /* convert to int to increment easily */
6564 vtop
->type
.t
= VT_INT
;
6570 /* XXX: it works because r2 is spilled last ! */
6571 store(vtop
->r2
, vtop
- 1);
6575 vtop
--; /* NOT vpop() because on x86 it would flush the fp stack */
6576 vtop
->r
|= delayed_cast
;
6580 /* post defines POST/PRE add. c is the token ++ or -- */
6581 void inc(int post
, int c
)
6584 vdup(); /* save lvalue */
6586 gv_dup(); /* duplicate value */
6591 vpushi(c
- TOK_MID
);
6593 vstore(); /* store value */
6595 vpop(); /* if post op, return saved value */
6598 /* Parse GNUC __attribute__ extension. Currently, the following
6599 extensions are recognized:
6600 - aligned(n) : set data/function alignment.
6601 - packed : force data alignment to 1
6602 - section(x) : generate data/code in this section.
6603 - unused : currently ignored, but may be used someday.
6604 - regparm(n) : pass function parameters in registers (i386 only)
6606 static void parse_attribute(AttributeDef
*ad
)
6610 while (tok
== TOK_ATTRIBUTE1
|| tok
== TOK_ATTRIBUTE2
) {
6614 while (tok
!= ')') {
6615 if (tok
< TOK_IDENT
)
6616 expect("attribute name");
6624 expect("section name");
6625 ad
->section
= find_section(tcc_state
, (char *)tokc
.cstr
->data
);
6634 if (n
<= 0 || (n
& (n
- 1)) != 0)
6635 error("alignment must be a positive power of two");
6648 /* currently, no need to handle it because tcc does not
6649 track unused objects */
6653 /* currently, no need to handle it because tcc does not
6654 track unused objects */
6659 FUNC_CALL(ad
->func_attr
) = FUNC_CDECL
;
6664 FUNC_CALL(ad
->func_attr
) = FUNC_STDCALL
;
6666 #ifdef TCC_TARGET_I386
6676 FUNC_CALL(ad
->func_attr
) = FUNC_FASTCALL1
+ n
- 1;
6682 FUNC_CALL(ad
->func_attr
) = FUNC_FASTCALLW
;
6686 FUNC_EXPORT(ad
->func_attr
) = 1;
6689 if (tcc_state
->warn_unsupported
)
6690 warning("'%s' attribute ignored", get_tok_str(t
, NULL
));
6691 /* skip parameters */
6693 int parenthesis
= 0;
6697 else if (tok
== ')')
6700 } while (parenthesis
&& tok
!= -1);
6713 /* enum/struct/union declaration. u is either VT_ENUM or VT_STRUCT */
6714 static void struct_decl(CType
*type
, int u
)
6716 int a
, v
, size
, align
, maxalign
, c
, offset
;
6717 int bit_size
, bit_pos
, bsize
, bt
, lbit_pos
;
6718 Sym
*s
, *ss
, *ass
, **ps
;
6722 a
= tok
; /* save decl type */
6727 /* struct already defined ? return it */
6729 expect("struct/union/enum name");
6733 error("invalid type");
6740 /* we put an undefined size for struct/union */
6741 s
= sym_push(v
| SYM_STRUCT
, &type1
, 0, -1);
6742 s
->r
= 0; /* default alignment is zero as gcc */
6743 /* put struct/union/enum name in type */
6751 error("struct/union/enum already defined");
6752 /* cannot be empty */
6754 /* non empty enums are not allowed */
6755 if (a
== TOK_ENUM
) {
6759 expect("identifier");
6765 /* enum symbols have static storage */
6766 ss
= sym_push(v
, &int_type
, VT_CONST
, c
);
6767 ss
->type
.t
|= VT_STATIC
;
6772 /* NOTE: we accept a trailing comma */
6782 while (tok
!= '}') {
6783 parse_btype(&btype
, &ad
);
6789 type_decl(&type1
, &ad
, &v
, TYPE_DIRECT
| TYPE_ABSTRACT
);
6790 if (v
== 0 && (type1
.t
& VT_BTYPE
) != VT_STRUCT
)
6791 expect("identifier");
6792 if ((type1
.t
& VT_BTYPE
) == VT_FUNC
||
6793 (type1
.t
& (VT_TYPEDEF
| VT_STATIC
| VT_EXTERN
| VT_INLINE
)))
6794 error("invalid type for '%s'",
6795 get_tok_str(v
, NULL
));
6799 bit_size
= expr_const();
6800 /* XXX: handle v = 0 case for messages */
6802 error("negative width in bit-field '%s'",
6803 get_tok_str(v
, NULL
));
6804 if (v
&& bit_size
== 0)
6805 error("zero width for bit-field '%s'",
6806 get_tok_str(v
, NULL
));
6808 size
= type_size(&type1
, &align
);
6810 if (align
< ad
.aligned
)
6812 } else if (ad
.packed
) {
6814 } else if (*tcc_state
->pack_stack_ptr
) {
6815 if (align
> *tcc_state
->pack_stack_ptr
)
6816 align
= *tcc_state
->pack_stack_ptr
;
6819 if (bit_size
>= 0) {
6820 bt
= type1
.t
& VT_BTYPE
;
6826 error("bitfields must have scalar type");
6828 if (bit_size
> bsize
) {
6829 error("width of '%s' exceeds its type",
6830 get_tok_str(v
, NULL
));
6831 } else if (bit_size
== bsize
) {
6832 /* no need for bit fields */
6834 } else if (bit_size
== 0) {
6835 /* XXX: what to do if only padding in a
6837 /* zero size: means to pad */
6841 /* we do not have enough room ? */
6842 if ((bit_pos
+ bit_size
) > bsize
)
6845 /* XXX: handle LSB first */
6846 type1
.t
|= VT_BITFIELD
|
6847 (bit_pos
<< VT_STRUCT_SHIFT
) |
6848 (bit_size
<< (VT_STRUCT_SHIFT
+ 6));
6849 bit_pos
+= bit_size
;
6854 if (v
!= 0 || (type1
.t
& VT_BTYPE
) == VT_STRUCT
) {
6855 /* add new memory data only if starting
6857 if (lbit_pos
== 0) {
6858 if (a
== TOK_STRUCT
) {
6859 c
= (c
+ align
- 1) & -align
;
6868 if (align
> maxalign
)
6872 printf("add field %s offset=%d",
6873 get_tok_str(v
, NULL
), offset
);
6874 if (type1
.t
& VT_BITFIELD
) {
6875 printf(" pos=%d size=%d",
6876 (type1
.t
>> VT_STRUCT_SHIFT
) & 0x3f,
6877 (type1
.t
>> (VT_STRUCT_SHIFT
+ 6)) & 0x3f);
6882 if (v
== 0 && (type1
.t
& VT_BTYPE
) == VT_STRUCT
) {
6884 while ((ass
= ass
->next
) != NULL
) {
6885 ss
= sym_push(ass
->v
, &ass
->type
, 0, offset
+ ass
->c
);
6890 ss
= sym_push(v
| SYM_FIELD
, &type1
, 0, offset
);
6894 if (tok
== ';' || tok
== TOK_EOF
)
6901 /* store size and alignment */
6902 s
->c
= (c
+ maxalign
- 1) & -maxalign
;
6908 /* return 0 if no type declaration. otherwise, return the basic type
6911 static int parse_btype(CType
*type
, AttributeDef
*ad
)
6913 int t
, u
, type_found
, typespec_found
, typedef_found
;
6917 memset(ad
, 0, sizeof(AttributeDef
));
6925 /* currently, we really ignore extension */
6935 if ((t
& VT_BTYPE
) != 0)
6936 error("too many basic types");
6952 if ((t
& VT_BTYPE
) == VT_DOUBLE
) {
6953 t
= (t
& ~VT_BTYPE
) | VT_LDOUBLE
;
6954 } else if ((t
& VT_BTYPE
) == VT_LONG
) {
6955 t
= (t
& ~VT_BTYPE
) | VT_LLONG
;
6969 if ((t
& VT_BTYPE
) == VT_LONG
) {
6970 t
= (t
& ~VT_BTYPE
) | VT_LDOUBLE
;
6977 struct_decl(&type1
, VT_ENUM
);
6980 type
->ref
= type1
.ref
;
6984 struct_decl(&type1
, VT_STRUCT
);
6987 /* type modifiers */
7040 /* GNUC attribute */
7041 case TOK_ATTRIBUTE1
:
7042 case TOK_ATTRIBUTE2
:
7043 parse_attribute(ad
);
7050 parse_expr_type(&type1
);
7053 if (typespec_found
|| typedef_found
)
7056 if (!s
|| !(s
->type
.t
& VT_TYPEDEF
))
7059 t
|= (s
->type
.t
& ~VT_TYPEDEF
);
7060 type
->ref
= s
->type
.ref
;
7068 if ((t
& (VT_SIGNED
|VT_UNSIGNED
)) == (VT_SIGNED
|VT_UNSIGNED
))
7069 error("signed and unsigned modifier");
7070 if (tcc_state
->char_is_unsigned
) {
7071 if ((t
& (VT_SIGNED
|VT_UNSIGNED
|VT_BTYPE
)) == VT_BYTE
)
7076 /* long is never used as type */
7077 if ((t
& VT_BTYPE
) == VT_LONG
)
7078 t
= (t
& ~VT_BTYPE
) | VT_INT
;
7083 /* convert a function parameter type (array to pointer and function to
7084 function pointer) */
7085 static inline void convert_parameter_type(CType
*pt
)
7087 /* remove const and volatile qualifiers (XXX: const could be used
7088 to indicate a const function parameter */
7089 pt
->t
&= ~(VT_CONSTANT
| VT_VOLATILE
);
7090 /* array must be transformed to pointer according to ANSI C */
7092 if ((pt
->t
& VT_BTYPE
) == VT_FUNC
) {
7097 static void post_type(CType
*type
, AttributeDef
*ad
)
7099 int n
, l
, t1
, arg_size
, align
;
7100 Sym
**plast
, *s
, *first
;
7105 /* function declaration */
7113 /* read param name and compute offset */
7114 if (l
!= FUNC_OLD
) {
7115 if (!parse_btype(&pt
, &ad1
)) {
7117 error("invalid type");
7124 if ((pt
.t
& VT_BTYPE
) == VT_VOID
&& tok
== ')')
7126 type_decl(&pt
, &ad1
, &n
, TYPE_DIRECT
| TYPE_ABSTRACT
);
7127 if ((pt
.t
& VT_BTYPE
) == VT_VOID
)
7128 error("parameter declared as void");
7129 arg_size
+= (type_size(&pt
, &align
) + 3) & ~3;
7134 expect("identifier");
7138 convert_parameter_type(&pt
);
7139 s
= sym_push(n
| SYM_FIELD
, &pt
, 0, 0);
7145 if (l
== FUNC_NEW
&& tok
== TOK_DOTS
) {
7152 /* if no parameters, then old type prototype */
7156 t1
= type
->t
& VT_STORAGE
;
7157 /* NOTE: const is ignored in returned type as it has a special
7158 meaning in gcc / C++ */
7159 type
->t
&= ~(VT_STORAGE
| VT_CONSTANT
);
7160 post_type(type
, ad
);
7161 /* we push a anonymous symbol which will contain the function prototype */
7162 FUNC_ARGS(ad
->func_attr
) = arg_size
;
7163 s
= sym_push(SYM_FIELD
, type
, ad
->func_attr
, l
);
7165 type
->t
= t1
| VT_FUNC
;
7167 } else if (tok
== '[') {
7168 /* array definition */
7174 error("invalid array size");
7177 /* parse next post type */
7178 t1
= type
->t
& VT_STORAGE
;
7179 type
->t
&= ~VT_STORAGE
;
7180 post_type(type
, ad
);
7182 /* we push a anonymous symbol which will contain the array
7184 s
= sym_push(SYM_FIELD
, type
, 0, n
);
7185 type
->t
= t1
| VT_ARRAY
| VT_PTR
;
7190 /* Parse a type declaration (except basic type), and return the type
7191 in 'type'. 'td' is a bitmask indicating which kind of type decl is
7192 expected. 'type' should contain the basic type. 'ad' is the
7193 attribute definition of the basic type. It can be modified by
7196 static void type_decl(CType
*type
, AttributeDef
*ad
, int *v
, int td
)
7199 CType type1
, *type2
;
7202 while (tok
== '*') {
7210 qualifiers
|= VT_CONSTANT
;
7215 qualifiers
|= VT_VOLATILE
;
7223 type
->t
|= qualifiers
;
7226 /* XXX: clarify attribute handling */
7227 if (tok
== TOK_ATTRIBUTE1
|| tok
== TOK_ATTRIBUTE2
)
7228 parse_attribute(ad
);
7230 /* recursive type */
7231 /* XXX: incorrect if abstract type for functions (e.g. 'int ()') */
7232 type1
.t
= 0; /* XXX: same as int */
7235 /* XXX: this is not correct to modify 'ad' at this point, but
7236 the syntax is not clear */
7237 if (tok
== TOK_ATTRIBUTE1
|| tok
== TOK_ATTRIBUTE2
)
7238 parse_attribute(ad
);
7239 type_decl(&type1
, ad
, v
, td
);
7242 /* type identifier */
7243 if (tok
>= TOK_IDENT
&& (td
& TYPE_DIRECT
)) {
7247 if (!(td
& TYPE_ABSTRACT
))
7248 expect("identifier");
7252 post_type(type
, ad
);
7253 if (tok
== TOK_ATTRIBUTE1
|| tok
== TOK_ATTRIBUTE2
)
7254 parse_attribute(ad
);
7257 /* append type at the end of type1 */
7270 /* compute the lvalue VT_LVAL_xxx needed to match type t. */
7271 static int lvalue_type(int t
)
7276 if (bt
== VT_BYTE
|| bt
== VT_BOOL
)
7278 else if (bt
== VT_SHORT
)
7282 if (t
& VT_UNSIGNED
)
7283 r
|= VT_LVAL_UNSIGNED
;
7287 /* indirection with full error checking and bound check */
7288 static void indir(void)
7290 if ((vtop
->type
.t
& VT_BTYPE
) != VT_PTR
) {
7291 if ((vtop
->type
.t
& VT_BTYPE
) == VT_FUNC
)
7295 if ((vtop
->r
& VT_LVAL
) && !nocode_wanted
)
7297 vtop
->type
= *pointed_type(&vtop
->type
);
7298 /* Arrays and functions are never lvalues */
7299 if (!(vtop
->type
.t
& VT_ARRAY
)
7300 && (vtop
->type
.t
& VT_BTYPE
) != VT_FUNC
) {
7301 vtop
->r
|= lvalue_type(vtop
->type
.t
);
7302 /* if bound checking, the referenced pointer must be checked */
7303 if (do_bounds_check
)
7304 vtop
->r
|= VT_MUSTBOUND
;
7308 /* pass a parameter to a function and do type checking and casting */
7309 static void gfunc_param_typed(Sym
*func
, Sym
*arg
)
7314 func_type
= func
->c
;
7315 if (func_type
== FUNC_OLD
||
7316 (func_type
== FUNC_ELLIPSIS
&& arg
== NULL
)) {
7317 /* default casting : only need to convert float to double */
7318 if ((vtop
->type
.t
& VT_BTYPE
) == VT_FLOAT
) {
7322 } else if (arg
== NULL
) {
7323 error("too many arguments to function");
7326 type
.t
&= ~VT_CONSTANT
; /* need to do that to avoid false warning */
7327 gen_assign_cast(&type
);
7331 /* parse an expression of the form '(type)' or '(expr)' and return its
7333 static void parse_expr_type(CType
*type
)
7339 if (parse_btype(type
, &ad
)) {
7340 type_decl(type
, &ad
, &n
, TYPE_ABSTRACT
);
7347 static void parse_type(CType
*type
)
7352 if (!parse_btype(type
, &ad
)) {
7355 type_decl(type
, &ad
, &n
, TYPE_ABSTRACT
);
7358 static void vpush_tokc(int t
)
7362 vsetc(&type
, VT_CONST
, &tokc
);
7365 static void unary(void)
7367 int n
, t
, align
, size
, r
;
7372 /* XXX: GCC 2.95.3 does not generate a table although it should be
7386 vpush_tokc(VT_INT
| VT_UNSIGNED
);
7390 vpush_tokc(VT_LLONG
);
7394 vpush_tokc(VT_LLONG
| VT_UNSIGNED
);
7398 vpush_tokc(VT_FLOAT
);
7402 vpush_tokc(VT_DOUBLE
);
7406 vpush_tokc(VT_LDOUBLE
);
7409 case TOK___FUNCTION__
:
7411 goto tok_identifier
;
7417 /* special function name identifier */
7418 len
= strlen(funcname
) + 1;
7419 /* generate char[len] type */
7424 vpush_ref(&type
, data_section
, data_section
->data_offset
, len
);
7425 ptr
= section_ptr_add(data_section
, len
);
7426 memcpy(ptr
, funcname
, len
);
7431 #ifdef TCC_TARGET_PE
7432 t
= VT_SHORT
| VT_UNSIGNED
;
7438 /* string parsing */
7441 if (tcc_state
->warn_write_strings
)
7446 memset(&ad
, 0, sizeof(AttributeDef
));
7447 decl_initializer_alloc(&type
, &ad
, VT_CONST
, 2, 0, 0);
7452 if (parse_btype(&type
, &ad
)) {
7453 type_decl(&type
, &ad
, &n
, TYPE_ABSTRACT
);
7455 /* check ISOC99 compound literal */
7457 /* data is allocated locally by default */
7462 /* all except arrays are lvalues */
7463 if (!(type
.t
& VT_ARRAY
))
7464 r
|= lvalue_type(type
.t
);
7465 memset(&ad
, 0, sizeof(AttributeDef
));
7466 decl_initializer_alloc(&type
, &ad
, r
, 1, 0, 0);
7471 } else if (tok
== '{') {
7472 /* save all registers */
7474 /* statement expression : we do not accept break/continue
7475 inside as GCC does */
7476 block(NULL
, NULL
, NULL
, NULL
, 0, 1);
7491 /* functions names must be treated as function pointers,
7492 except for unary '&' and sizeof. Since we consider that
7493 functions are not lvalues, we only have to handle it
7494 there and in function calls. */
7495 /* arrays can also be used although they are not lvalues */
7496 if ((vtop
->type
.t
& VT_BTYPE
) != VT_FUNC
&&
7497 !(vtop
->type
.t
& VT_ARRAY
) && !(vtop
->type
.t
& VT_LLOCAL
))
7499 mk_pointer(&vtop
->type
);
7505 if ((vtop
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
)
7506 vtop
->c
.i
= !vtop
->c
.i
;
7507 else if ((vtop
->r
& VT_VALMASK
) == VT_CMP
)
7508 vtop
->c
.i
= vtop
->c
.i
^ 1;
7511 vseti(VT_JMP
, gtst(1, 0));
7522 /* in order to force cast, we add zero */
7524 if ((vtop
->type
.t
& VT_BTYPE
) == VT_PTR
)
7525 error("pointer not accepted for unary plus");
7535 parse_expr_type(&type
);
7539 size
= type_size(&type
, &align
);
7540 if (t
== TOK_SIZEOF
) {
7542 error("sizeof applied to an incomplete type");
7547 vtop
->type
.t
|= VT_UNSIGNED
;
7550 case TOK_builtin_types_compatible_p
:
7559 type1
.t
&= ~(VT_CONSTANT
| VT_VOLATILE
);
7560 type2
.t
&= ~(VT_CONSTANT
| VT_VOLATILE
);
7561 vpushi(is_compatible_types(&type1
, &type2
));
7564 case TOK_builtin_constant_p
:
7566 int saved_nocode_wanted
, res
;
7569 saved_nocode_wanted
= nocode_wanted
;
7572 res
= (vtop
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
;
7574 nocode_wanted
= saved_nocode_wanted
;
7594 goto tok_identifier
;
7596 /* allow to take the address of a label */
7597 if (tok
< TOK_UIDENT
)
7598 expect("label identifier");
7599 s
= label_find(tok
);
7601 s
= label_push(&global_label_stack
, tok
, LABEL_FORWARD
);
7603 if (s
->r
== LABEL_DECLARED
)
7604 s
->r
= LABEL_FORWARD
;
7607 s
->type
.t
= VT_VOID
;
7608 mk_pointer(&s
->type
);
7609 s
->type
.t
|= VT_STATIC
;
7611 vset(&s
->type
, VT_CONST
| VT_SYM
, 0);
7620 expect("identifier");
7624 error("'%s' undeclared", get_tok_str(t
, NULL
));
7625 /* for simple function calls, we tolerate undeclared
7626 external reference to int() function */
7627 if (tcc_state
->warn_implicit_function_declaration
)
7628 warning("implicit declaration of function '%s'",
7629 get_tok_str(t
, NULL
));
7630 s
= external_global_sym(t
, &func_old_type
, 0);
7632 if ((s
->type
.t
& (VT_STATIC
| VT_INLINE
| VT_BTYPE
)) ==
7633 (VT_STATIC
| VT_INLINE
| VT_FUNC
)) {
7634 /* if referencing an inline function, then we generate a
7635 symbol to it if not already done. It will have the
7636 effect to generate code for it at the end of the
7637 compilation unit. Inline function as always
7638 generated in the text section. */
7640 put_extern_sym(s
, text_section
, 0, 0);
7641 r
= VT_SYM
| VT_CONST
;
7645 vset(&s
->type
, r
, s
->c
);
7646 /* if forward reference, we must point to s */
7647 if (vtop
->r
& VT_SYM
) {
7654 /* post operations */
7656 if (tok
== TOK_INC
|| tok
== TOK_DEC
) {
7659 } else if (tok
== '.' || tok
== TOK_ARROW
) {
7661 if (tok
== TOK_ARROW
)
7666 /* expect pointer on structure */
7667 if ((vtop
->type
.t
& VT_BTYPE
) != VT_STRUCT
)
7668 expect("struct or union");
7672 while ((s
= s
->next
) != NULL
) {
7677 error("field not found: %s", get_tok_str(tok
& ~SYM_FIELD
, NULL
));
7678 /* add field offset to pointer */
7679 vtop
->type
= char_pointer_type
; /* change type to 'char *' */
7682 /* change type to field type, and set to lvalue */
7683 vtop
->type
= s
->type
;
7684 /* an array is never an lvalue */
7685 if (!(vtop
->type
.t
& VT_ARRAY
)) {
7686 vtop
->r
|= lvalue_type(vtop
->type
.t
);
7687 /* if bound checking, the referenced pointer must be checked */
7688 if (do_bounds_check
)
7689 vtop
->r
|= VT_MUSTBOUND
;
7692 } else if (tok
== '[') {
7698 } else if (tok
== '(') {
7704 if ((vtop
->type
.t
& VT_BTYPE
) != VT_FUNC
) {
7705 /* pointer test (no array accepted) */
7706 if ((vtop
->type
.t
& (VT_BTYPE
| VT_ARRAY
)) == VT_PTR
) {
7707 vtop
->type
= *pointed_type(&vtop
->type
);
7708 if ((vtop
->type
.t
& VT_BTYPE
) != VT_FUNC
)
7712 expect("function pointer");
7715 vtop
->r
&= ~VT_LVAL
; /* no lvalue */
7717 /* get return type */
7720 sa
= s
->next
; /* first parameter */
7723 /* compute first implicit argument if a structure is returned */
7724 if ((s
->type
.t
& VT_BTYPE
) == VT_STRUCT
) {
7725 /* get some space for the returned structure */
7726 size
= type_size(&s
->type
, &align
);
7727 loc
= (loc
- size
) & -align
;
7729 ret
.r
= VT_LOCAL
| VT_LVAL
;
7730 /* pass it as 'int' to avoid structure arg passing
7732 vseti(VT_LOCAL
, loc
);
7737 /* return in register */
7738 if (is_float(ret
.type
.t
)) {
7741 if ((ret
.type
.t
& VT_BTYPE
) == VT_LLONG
)
7750 gfunc_param_typed(s
, sa
);
7760 error("too few arguments to function");
7762 if (!nocode_wanted
) {
7763 gfunc_call(nb_args
);
7765 vtop
-= (nb_args
+ 1);
7768 vsetc(&ret
.type
, ret
.r
, &ret
.c
);
7776 static void uneq(void)
7782 (tok
>= TOK_A_MOD
&& tok
<= TOK_A_DIV
) ||
7783 tok
== TOK_A_XOR
|| tok
== TOK_A_OR
||
7784 tok
== TOK_A_SHL
|| tok
== TOK_A_SAR
) {
7799 static void expr_prod(void)
7804 while (tok
== '*' || tok
== '/' || tok
== '%') {
7812 static void expr_sum(void)
7817 while (tok
== '+' || tok
== '-') {
7825 static void expr_shift(void)
7830 while (tok
== TOK_SHL
|| tok
== TOK_SAR
) {
7838 static void expr_cmp(void)
7843 while ((tok
>= TOK_ULE
&& tok
<= TOK_GT
) ||
7844 tok
== TOK_ULT
|| tok
== TOK_UGE
) {
7852 static void expr_cmpeq(void)
7857 while (tok
== TOK_EQ
|| tok
== TOK_NE
) {
7865 static void expr_and(void)
7868 while (tok
== '&') {
7875 static void expr_xor(void)
7878 while (tok
== '^') {
7885 static void expr_or(void)
7888 while (tok
== '|') {
7895 /* XXX: fix this mess */
7896 static void expr_land_const(void)
7899 while (tok
== TOK_LAND
) {
7906 /* XXX: fix this mess */
7907 static void expr_lor_const(void)
7910 while (tok
== TOK_LOR
) {
7917 /* only used if non constant */
7918 static void expr_land(void)
7923 if (tok
== TOK_LAND
) {
7928 if (tok
!= TOK_LAND
) {
7938 static void expr_lor(void)
7943 if (tok
== TOK_LOR
) {
7948 if (tok
!= TOK_LOR
) {
7958 /* XXX: better constant handling */
7959 static void expr_eq(void)
7961 int tt
, u
, r1
, r2
, rc
, t1
, t2
, bt1
, bt2
;
7963 CType type
, type1
, type2
;
7972 if (tok
== ':' && gnu_ext
) {
7988 if (vtop
!= vstack
) {
7989 /* needed to avoid having different registers saved in
7991 if (is_float(vtop
->type
.t
))
7998 if (tok
== ':' && gnu_ext
) {
8006 sv
= *vtop
; /* save value to handle it later */
8007 vtop
--; /* no vpop so that FP stack is not flushed */
8015 bt1
= t1
& VT_BTYPE
;
8017 bt2
= t2
& VT_BTYPE
;
8018 /* cast operands to correct type according to ISOC rules */
8019 if (is_float(bt1
) || is_float(bt2
)) {
8020 if (bt1
== VT_LDOUBLE
|| bt2
== VT_LDOUBLE
) {
8021 type
.t
= VT_LDOUBLE
;
8022 } else if (bt1
== VT_DOUBLE
|| bt2
== VT_DOUBLE
) {
8027 } else if (bt1
== VT_LLONG
|| bt2
== VT_LLONG
) {
8028 /* cast to biggest op */
8030 /* convert to unsigned if it does not fit in a long long */
8031 if ((t1
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_LLONG
| VT_UNSIGNED
) ||
8032 (t2
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_LLONG
| VT_UNSIGNED
))
8033 type
.t
|= VT_UNSIGNED
;
8034 } else if (bt1
== VT_PTR
|| bt2
== VT_PTR
) {
8035 /* XXX: test pointer compatibility */
8037 } else if (bt1
== VT_FUNC
|| bt2
== VT_FUNC
) {
8038 /* XXX: test function pointer compatibility */
8040 } else if (bt1
== VT_STRUCT
|| bt2
== VT_STRUCT
) {
8041 /* XXX: test structure compatibility */
8043 } else if (bt1
== VT_VOID
|| bt2
== VT_VOID
) {
8044 /* NOTE: as an extension, we accept void on only one side */
8047 /* integer operations */
8049 /* convert to unsigned if it does not fit in an integer */
8050 if ((t1
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_INT
| VT_UNSIGNED
) ||
8051 (t2
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_INT
| VT_UNSIGNED
))
8052 type
.t
|= VT_UNSIGNED
;
8055 /* now we convert second operand */
8057 if (VT_STRUCT
== (vtop
->type
.t
& VT_BTYPE
))
8060 if (is_float(type
.t
)) {
8062 } else if ((type
.t
& VT_BTYPE
) == VT_LLONG
) {
8063 /* for long longs, we use fixed registers to avoid having
8064 to handle a complicated move */
8069 /* this is horrible, but we must also convert first
8073 /* put again first value and cast it */
8076 if (VT_STRUCT
== (vtop
->type
.t
& VT_BTYPE
))
8086 static void gexpr(void)
8097 /* parse an expression and return its type without any side effect. */
8098 static void expr_type(CType
*type
)
8100 int saved_nocode_wanted
;
8102 saved_nocode_wanted
= nocode_wanted
;
8107 nocode_wanted
= saved_nocode_wanted
;
8110 /* parse a unary expression and return its type without any side
8112 static void unary_type(CType
*type
)
8124 /* parse a constant expression and return value in vtop. */
8125 static void expr_const1(void)
8134 /* parse an integer constant and return its value. */
8135 static int expr_const(void)
8139 if ((vtop
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) != VT_CONST
)
8140 expect("constant expression");
8146 /* return the label token if current token is a label, otherwise
8148 static int is_label(void)
8152 /* fast test first */
8153 if (tok
< TOK_UIDENT
)
8155 /* no need to save tokc because tok is an identifier */
8162 unget_tok(last_tok
);
8167 static void block(int *bsym
, int *csym
, int *case_sym
, int *def_sym
,
8168 int case_reg
, int is_expr
)
8173 /* generate line number info */
8175 (last_line_num
!= file
->line_num
|| last_ind
!= ind
)) {
8176 put_stabn(N_SLINE
, 0, file
->line_num
, ind
- func_ind
);
8178 last_line_num
= file
->line_num
;
8182 /* default return value is (void) */
8184 vtop
->type
.t
= VT_VOID
;
8187 if (tok
== TOK_IF
) {
8194 block(bsym
, csym
, case_sym
, def_sym
, case_reg
, 0);
8196 if (c
== TOK_ELSE
) {
8200 block(bsym
, csym
, case_sym
, def_sym
, case_reg
, 0);
8201 gsym(d
); /* patch else jmp */
8204 } else if (tok
== TOK_WHILE
) {
8212 block(&a
, &b
, case_sym
, def_sym
, case_reg
, 0);
8216 } else if (tok
== '{') {
8220 /* record local declaration stack position */
8222 llabel
= local_label_stack
;
8223 /* handle local labels declarations */
8224 if (tok
== TOK_LABEL
) {
8227 if (tok
< TOK_UIDENT
)
8228 expect("label identifier");
8229 label_push(&local_label_stack
, tok
, LABEL_DECLARED
);
8239 while (tok
!= '}') {
8244 block(bsym
, csym
, case_sym
, def_sym
, case_reg
, is_expr
);
8247 /* pop locally defined labels */
8248 label_pop(&local_label_stack
, llabel
);
8249 /* pop locally defined symbols */
8250 sym_pop(&local_stack
, s
);
8252 } else if (tok
== TOK_RETURN
) {
8256 gen_assign_cast(&func_vt
);
8257 if ((func_vt
.t
& VT_BTYPE
) == VT_STRUCT
) {
8259 /* if returning structure, must copy it to implicit
8260 first pointer arg location */
8263 size
= type_size(&func_vt
,&align
);
8266 if((vtop
->r
!= (VT_LOCAL
| VT_LVAL
) || (vtop
->c
.i
& 3))
8270 loc
= (loc
- size
) & -4;
8273 vset(&type
, VT_LOCAL
| VT_LVAL
, addr
);
8276 vset(&int_type
, VT_LOCAL
| VT_LVAL
, addr
);
8278 vtop
->type
= int_type
;
8284 vset(&type
, VT_LOCAL
| VT_LVAL
, func_vc
);
8287 /* copy structure value to pointer */
8292 } else if (is_float(func_vt
.t
)) {
8297 vtop
--; /* NOT vpop() because on x86 it would flush the fp stack */
8300 rsym
= gjmp(rsym
); /* jmp */
8301 } else if (tok
== TOK_BREAK
) {
8304 error("cannot break");
8305 *bsym
= gjmp(*bsym
);
8308 } else if (tok
== TOK_CONTINUE
) {
8311 error("cannot continue");
8312 *csym
= gjmp(*csym
);
8315 } else if (tok
== TOK_FOR
) {
8342 block(&a
, &b
, case_sym
, def_sym
, case_reg
, 0);
8347 if (tok
== TOK_DO
) {
8352 block(&a
, &b
, case_sym
, def_sym
, case_reg
, 0);
8363 if (tok
== TOK_SWITCH
) {
8367 /* XXX: other types than integer */
8368 case_reg
= gv(RC_INT
);
8372 b
= gjmp(0); /* jump to first case */
8374 block(&a
, csym
, &b
, &c
, case_reg
, 0);
8375 /* if no default, jmp after switch */
8383 if (tok
== TOK_CASE
) {
8390 if (gnu_ext
&& tok
== TOK_DOTS
) {
8394 warning("empty case range");
8396 /* since a case is like a label, we must skip it with a jmp */
8403 *case_sym
= gtst(1, 0);
8406 *case_sym
= gtst(1, 0);
8410 *case_sym
= gtst(1, *case_sym
);
8415 goto block_after_label
;
8417 if (tok
== TOK_DEFAULT
) {
8423 error("too many 'default'");
8426 goto block_after_label
;
8428 if (tok
== TOK_GOTO
) {
8430 if (tok
== '*' && gnu_ext
) {
8434 if ((vtop
->type
.t
& VT_BTYPE
) != VT_PTR
)
8437 } else if (tok
>= TOK_UIDENT
) {
8438 s
= label_find(tok
);
8439 /* put forward definition if needed */
8441 s
= label_push(&global_label_stack
, tok
, LABEL_FORWARD
);
8443 if (s
->r
== LABEL_DECLARED
)
8444 s
->r
= LABEL_FORWARD
;
8446 /* label already defined */
8447 if (s
->r
& LABEL_FORWARD
)
8448 s
->next
= (void *)gjmp((long)s
->next
);
8450 gjmp_addr((long)s
->next
);
8453 expect("label identifier");
8456 } else if (tok
== TOK_ASM1
|| tok
== TOK_ASM2
|| tok
== TOK_ASM3
) {
8464 if (s
->r
== LABEL_DEFINED
)
8465 error("duplicate label '%s'", get_tok_str(s
->v
, NULL
));
8466 gsym((long)s
->next
);
8467 s
->r
= LABEL_DEFINED
;
8469 s
= label_push(&global_label_stack
, b
, LABEL_DEFINED
);
8471 s
->next
= (void *)ind
;
8472 /* we accept this, but it is a mistake */
8475 warning("deprecated use of label at end of compound statement");
8479 block(bsym
, csym
, case_sym
, def_sym
, case_reg
, is_expr
);
8482 /* expression case */
8497 /* t is the array or struct type. c is the array or struct
8498 address. cur_index/cur_field is the pointer to the current
8499 value. 'size_only' is true if only size info is needed (only used
8501 static void decl_designator(CType
*type
, Section
*sec
, unsigned long c
,
8502 int *cur_index
, Sym
**cur_field
,
8506 int notfirst
, index
, index_last
, align
, l
, nb_elems
, elem_size
;
8512 if (gnu_ext
&& (l
= is_label()) != 0)
8514 while (tok
== '[' || tok
== '.') {
8516 if (!(type
->t
& VT_ARRAY
))
8517 expect("array type");
8520 index
= expr_const();
8521 if (index
< 0 || (s
->c
>= 0 && index
>= s
->c
))
8522 expect("invalid index");
8523 if (tok
== TOK_DOTS
&& gnu_ext
) {
8525 index_last
= expr_const();
8526 if (index_last
< 0 ||
8527 (s
->c
>= 0 && index_last
>= s
->c
) ||
8529 expect("invalid index");
8535 *cur_index
= index_last
;
8536 type
= pointed_type(type
);
8537 elem_size
= type_size(type
, &align
);
8538 c
+= index
* elem_size
;
8539 /* NOTE: we only support ranges for last designator */
8540 nb_elems
= index_last
- index
+ 1;
8541 if (nb_elems
!= 1) {
8550 if ((type
->t
& VT_BTYPE
) != VT_STRUCT
)
8551 expect("struct/union type");
8564 /* XXX: fix this mess by using explicit storage field */
8566 type1
.t
|= (type
->t
& ~VT_TYPE
);
8580 if (type
->t
& VT_ARRAY
) {
8582 type
= pointed_type(type
);
8583 c
+= index
* type_size(type
, &align
);
8587 error("too many field init");
8588 /* XXX: fix this mess by using explicit storage field */
8590 type1
.t
|= (type
->t
& ~VT_TYPE
);
8595 decl_initializer(type
, sec
, c
, 0, size_only
);
8597 /* XXX: make it more general */
8598 if (!size_only
&& nb_elems
> 1) {
8599 unsigned long c_end
;
8604 error("range init not supported yet for dynamic storage");
8605 c_end
= c
+ nb_elems
* elem_size
;
8606 if (c_end
> sec
->data_allocated
)
8607 section_realloc(sec
, c_end
);
8608 src
= sec
->data
+ c
;
8610 for(i
= 1; i
< nb_elems
; i
++) {
8612 memcpy(dst
, src
, elem_size
);
8618 #define EXPR_CONST 1
8621 /* store a value or an expression directly in global data or in local array */
8622 static void init_putv(CType
*type
, Section
*sec
, unsigned long c
,
8623 int v
, int expr_type
)
8625 int saved_global_expr
, bt
, bit_pos
, bit_size
;
8627 unsigned long long bit_mask
;
8635 /* compound literals must be allocated globally in this case */
8636 saved_global_expr
= global_expr
;
8639 global_expr
= saved_global_expr
;
8640 /* NOTE: symbols are accepted */
8641 if ((vtop
->r
& (VT_VALMASK
| VT_LVAL
)) != VT_CONST
)
8642 error("initializer element is not constant");
8650 dtype
.t
&= ~VT_CONSTANT
; /* need to do that to avoid false warning */
8653 /* XXX: not portable */
8654 /* XXX: generate error if incorrect relocation */
8655 gen_assign_cast(&dtype
);
8656 bt
= type
->t
& VT_BTYPE
;
8657 ptr
= sec
->data
+ c
;
8658 /* XXX: make code faster ? */
8659 if (!(type
->t
& VT_BITFIELD
)) {
8664 bit_pos
= (vtop
->type
.t
>> VT_STRUCT_SHIFT
) & 0x3f;
8665 bit_size
= (vtop
->type
.t
>> (VT_STRUCT_SHIFT
+ 6)) & 0x3f;
8666 bit_mask
= (1LL << bit_size
) - 1;
8668 if ((vtop
->r
& VT_SYM
) &&
8674 (bt
== VT_INT
&& bit_size
!= 32)))
8675 error("initializer element is not computable at load time");
8678 *(char *)ptr
|= (vtop
->c
.i
& bit_mask
) << bit_pos
;
8681 *(short *)ptr
|= (vtop
->c
.i
& bit_mask
) << bit_pos
;
8684 *(double *)ptr
= vtop
->c
.d
;
8687 *(long double *)ptr
= vtop
->c
.ld
;
8690 *(long long *)ptr
|= (vtop
->c
.ll
& bit_mask
) << bit_pos
;
8693 if (vtop
->r
& VT_SYM
) {
8694 greloc(sec
, vtop
->sym
, c
, R_DATA_32
);
8696 *(int *)ptr
|= (vtop
->c
.i
& bit_mask
) << bit_pos
;
8701 vset(&dtype
, VT_LOCAL
|VT_LVAL
, c
);
8708 /* put zeros for variable based init */
8709 static void init_putz(CType
*t
, Section
*sec
, unsigned long c
, int size
)
8712 /* nothing to do because globals are already set to zero */
8714 vpush_global_sym(&func_old_type
, TOK_memset
);
8722 /* 't' contains the type and storage info. 'c' is the offset of the
8723 object in section 'sec'. If 'sec' is NULL, it means stack based
8724 allocation. 'first' is true if array '{' must be read (multi
8725 dimension implicit array init handling). 'size_only' is true if
8726 size only evaluation is wanted (only for arrays). */
8727 static void decl_initializer(CType
*type
, Section
*sec
, unsigned long c
,
8728 int first
, int size_only
)
8730 int index
, array_length
, n
, no_oblock
, nb
, parlevel
, i
;
8731 int size1
, align1
, expr_type
;
8735 if (type
->t
& VT_ARRAY
) {
8739 t1
= pointed_type(type
);
8740 size1
= type_size(t1
, &align1
);
8743 if ((first
&& tok
!= TOK_LSTR
&& tok
!= TOK_STR
) ||
8749 /* only parse strings here if correct type (otherwise: handle
8750 them as ((w)char *) expressions */
8751 if ((tok
== TOK_LSTR
&&
8752 #ifdef TCC_TARGET_PE
8753 (t1
->t
& VT_BTYPE
) == VT_SHORT
&& (t1
->t
& VT_UNSIGNED
)
8755 (t1
->t
& VT_BTYPE
) == VT_INT
8757 ) || (tok
== TOK_STR
&& (t1
->t
& VT_BTYPE
) == VT_BYTE
)) {
8758 while (tok
== TOK_STR
|| tok
== TOK_LSTR
) {
8763 /* compute maximum number of chars wanted */
8765 cstr_len
= cstr
->size
;
8767 cstr_len
= cstr
->size
/ sizeof(nwchar_t
);
8770 if (n
>= 0 && nb
> (n
- array_length
))
8771 nb
= n
- array_length
;
8774 warning("initializer-string for array is too long");
8775 /* in order to go faster for common case (char
8776 string in global variable, we handle it
8778 if (sec
&& tok
== TOK_STR
&& size1
== 1) {
8779 memcpy(sec
->data
+ c
+ array_length
, cstr
->data
, nb
);
8783 ch
= ((unsigned char *)cstr
->data
)[i
];
8785 ch
= ((nwchar_t
*)cstr
->data
)[i
];
8786 init_putv(t1
, sec
, c
+ (array_length
+ i
) * size1
,
8794 /* only add trailing zero if enough storage (no
8795 warning in this case since it is standard) */
8796 if (n
< 0 || array_length
< n
) {
8798 init_putv(t1
, sec
, c
+ (array_length
* size1
), 0, EXPR_VAL
);
8804 while (tok
!= '}') {
8805 decl_designator(type
, sec
, c
, &index
, NULL
, size_only
);
8806 if (n
>= 0 && index
>= n
)
8807 error("index too large");
8808 /* must put zero in holes (note that doing it that way
8809 ensures that it even works with designators) */
8810 if (!size_only
&& array_length
< index
) {
8811 init_putz(t1
, sec
, c
+ array_length
* size1
,
8812 (index
- array_length
) * size1
);
8815 if (index
> array_length
)
8816 array_length
= index
;
8817 /* special test for multi dimensional arrays (may not
8818 be strictly correct if designators are used at the
8820 if (index
>= n
&& no_oblock
)
8829 /* put zeros at the end */
8830 if (!size_only
&& n
>= 0 && array_length
< n
) {
8831 init_putz(t1
, sec
, c
+ array_length
* size1
,
8832 (n
- array_length
) * size1
);
8834 /* patch type size if needed */
8836 s
->c
= array_length
;
8837 } else if ((type
->t
& VT_BTYPE
) == VT_STRUCT
&&
8838 (sec
|| !first
|| tok
== '{')) {
8841 /* NOTE: the previous test is a specific case for automatic
8842 struct/union init */
8843 /* XXX: union needs only one init */
8845 /* XXX: this test is incorrect for local initializers
8846 beginning with ( without {. It would be much more difficult
8847 to do it correctly (ideally, the expression parser should
8848 be used in all cases) */
8854 while (tok
== '(') {
8858 if (!parse_btype(&type1
, &ad1
))
8860 type_decl(&type1
, &ad1
, &n
, TYPE_ABSTRACT
);
8862 if (!is_assignable_types(type
, &type1
))
8863 error("invalid type for cast");
8868 if (first
|| tok
== '{') {
8877 while (tok
!= '}') {
8878 decl_designator(type
, sec
, c
, NULL
, &f
, size_only
);
8880 if (!size_only
&& array_length
< index
) {
8881 init_putz(type
, sec
, c
+ array_length
,
8882 index
- array_length
);
8884 index
= index
+ type_size(&f
->type
, &align1
);
8885 if (index
> array_length
)
8886 array_length
= index
;
8888 if (no_oblock
&& f
== NULL
)
8894 /* put zeros at the end */
8895 if (!size_only
&& array_length
< n
) {
8896 init_putz(type
, sec
, c
+ array_length
,
8905 } else if (tok
== '{') {
8907 decl_initializer(type
, sec
, c
, first
, size_only
);
8909 } else if (size_only
) {
8910 /* just skip expression */
8912 while ((parlevel
> 0 || (tok
!= '}' && tok
!= ',')) &&
8916 else if (tok
== ')')
8921 /* currently, we always use constant expression for globals
8922 (may change for scripting case) */
8923 expr_type
= EXPR_CONST
;
8925 expr_type
= EXPR_ANY
;
8926 init_putv(type
, sec
, c
, 0, expr_type
);
8930 /* parse an initializer for type 't' if 'has_init' is non zero, and
8931 allocate space in local or global data space ('r' is either
8932 VT_LOCAL or VT_CONST). If 'v' is non zero, then an associated
8933 variable 'v' of scope 'scope' is declared before initializers are
8934 parsed. If 'v' is zero, then a reference to the new object is put
8935 in the value stack. If 'has_init' is 2, a special parsing is done
8936 to handle string constants. */
8937 static void decl_initializer_alloc(CType
*type
, AttributeDef
*ad
, int r
,
8938 int has_init
, int v
, int scope
)
8940 int size
, align
, addr
, data_offset
;
8942 ParseState saved_parse_state
;
8943 TokenString init_str
;
8946 size
= type_size(type
, &align
);
8947 /* If unknown size, we must evaluate it before
8948 evaluating initializers because
8949 initializers can generate global data too
8950 (e.g. string pointers or ISOC99 compound
8951 literals). It also simplifies local
8952 initializers handling */
8953 tok_str_new(&init_str
);
8956 error("unknown type size");
8957 /* get all init string */
8958 if (has_init
== 2) {
8959 /* only get strings */
8960 while (tok
== TOK_STR
|| tok
== TOK_LSTR
) {
8961 tok_str_add_tok(&init_str
);
8966 while (level
> 0 || (tok
!= ',' && tok
!= ';')) {
8968 error("unexpected end of file in initializer");
8969 tok_str_add_tok(&init_str
);
8972 else if (tok
== '}') {
8980 tok_str_add(&init_str
, -1);
8981 tok_str_add(&init_str
, 0);
8984 save_parse_state(&saved_parse_state
);
8986 macro_ptr
= init_str
.str
;
8988 decl_initializer(type
, NULL
, 0, 1, 1);
8989 /* prepare second initializer parsing */
8990 macro_ptr
= init_str
.str
;
8993 /* if still unknown size, error */
8994 size
= type_size(type
, &align
);
8996 error("unknown type size");
8998 /* take into account specified alignment if bigger */
9000 if (ad
->aligned
> align
)
9001 align
= ad
->aligned
;
9002 } else if (ad
->packed
) {
9005 if ((r
& VT_VALMASK
) == VT_LOCAL
) {
9007 if (do_bounds_check
&& (type
->t
& VT_ARRAY
))
9009 loc
= (loc
- size
) & -align
;
9011 /* handles bounds */
9012 /* XXX: currently, since we do only one pass, we cannot track
9013 '&' operators, so we add only arrays */
9014 if (do_bounds_check
&& (type
->t
& VT_ARRAY
)) {
9015 unsigned long *bounds_ptr
;
9016 /* add padding between regions */
9018 /* then add local bound info */
9019 bounds_ptr
= section_ptr_add(lbounds_section
, 2 * sizeof(unsigned long));
9020 bounds_ptr
[0] = addr
;
9021 bounds_ptr
[1] = size
;
9024 /* local variable */
9025 sym_push(v
, type
, r
, addr
);
9027 /* push local reference */
9028 vset(type
, r
, addr
);
9034 if (v
&& scope
== VT_CONST
) {
9035 /* see if the symbol was already defined */
9038 if (!is_compatible_types(&sym
->type
, type
))
9039 error("incompatible types for redefinition of '%s'",
9040 get_tok_str(v
, NULL
));
9041 if (sym
->type
.t
& VT_EXTERN
) {
9042 /* if the variable is extern, it was not allocated */
9043 sym
->type
.t
&= ~VT_EXTERN
;
9044 /* set array size if it was ommited in extern
9046 if ((sym
->type
.t
& VT_ARRAY
) &&
9047 sym
->type
.ref
->c
< 0 &&
9049 sym
->type
.ref
->c
= type
->ref
->c
;
9051 /* we accept several definitions of the same
9052 global variable. this is tricky, because we
9053 must play with the SHN_COMMON type of the symbol */
9054 /* XXX: should check if the variable was already
9055 initialized. It is incorrect to initialized it
9057 /* no init data, we won't add more to the symbol */
9064 /* allocate symbol in corresponding section */
9069 else if (tcc_state
->nocommon
)
9073 data_offset
= sec
->data_offset
;
9074 data_offset
= (data_offset
+ align
- 1) & -align
;
9076 /* very important to increment global pointer at this time
9077 because initializers themselves can create new initializers */
9078 data_offset
+= size
;
9079 /* add padding if bound check */
9080 if (do_bounds_check
)
9082 sec
->data_offset
= data_offset
;
9083 /* allocate section space to put the data */
9084 if (sec
->sh_type
!= SHT_NOBITS
&&
9085 data_offset
> sec
->data_allocated
)
9086 section_realloc(sec
, data_offset
);
9087 /* align section if needed */
9088 if (align
> sec
->sh_addralign
)
9089 sec
->sh_addralign
= align
;
9091 addr
= 0; /* avoid warning */
9095 if (scope
!= VT_CONST
|| !sym
) {
9096 sym
= sym_push(v
, type
, r
| VT_SYM
, 0);
9098 /* update symbol definition */
9100 put_extern_sym(sym
, sec
, addr
, size
);
9103 /* put a common area */
9104 put_extern_sym(sym
, NULL
, align
, size
);
9105 /* XXX: find a nicer way */
9106 esym
= &((Elf32_Sym
*)symtab_section
->data
)[sym
->c
];
9107 esym
->st_shndx
= SHN_COMMON
;
9112 /* push global reference */
9113 sym
= get_sym_ref(type
, sec
, addr
, size
);
9115 vsetc(type
, VT_CONST
| VT_SYM
, &cval
);
9119 /* handles bounds now because the symbol must be defined
9120 before for the relocation */
9121 if (do_bounds_check
) {
9122 unsigned long *bounds_ptr
;
9124 greloc(bounds_section
, sym
, bounds_section
->data_offset
, R_DATA_32
);
9125 /* then add global bound info */
9126 bounds_ptr
= section_ptr_add(bounds_section
, 2 * sizeof(long));
9127 bounds_ptr
[0] = 0; /* relocated */
9128 bounds_ptr
[1] = size
;
9132 decl_initializer(type
, sec
, addr
, 1, 0);
9133 /* restore parse state if needed */
9135 tok_str_free(init_str
.str
);
9136 restore_parse_state(&saved_parse_state
);
9142 void put_func_debug(Sym
*sym
)
9147 /* XXX: we put here a dummy type */
9148 snprintf(buf
, sizeof(buf
), "%s:%c1",
9149 funcname
, sym
->type
.t
& VT_STATIC
? 'f' : 'F');
9150 put_stabs_r(buf
, N_FUN
, 0, file
->line_num
, 0,
9151 cur_text_section
, sym
->c
);
9152 /* //gr gdb wants a line at the function */
9153 put_stabn(N_SLINE
, 0, file
->line_num
, 0);
9158 /* parse an old style function declaration list */
9159 /* XXX: check multiple parameter */
9160 static void func_decl_list(Sym
*func_sym
)
9167 /* parse each declaration */
9168 while (tok
!= '{' && tok
!= ';' && tok
!= ',' && tok
!= TOK_EOF
) {
9169 if (!parse_btype(&btype
, &ad
))
9170 expect("declaration list");
9171 if (((btype
.t
& VT_BTYPE
) == VT_ENUM
||
9172 (btype
.t
& VT_BTYPE
) == VT_STRUCT
) &&
9174 /* we accept no variable after */
9178 type_decl(&type
, &ad
, &v
, TYPE_DIRECT
);
9179 /* find parameter in function parameter list */
9182 if ((s
->v
& ~SYM_FIELD
) == v
)
9186 error("declaration for parameter '%s' but no such parameter",
9187 get_tok_str(v
, NULL
));
9189 /* check that no storage specifier except 'register' was given */
9190 if (type
.t
& VT_STORAGE
)
9191 error("storage class specified for '%s'", get_tok_str(v
, NULL
));
9192 convert_parameter_type(&type
);
9193 /* we can add the type (NOTE: it could be local to the function) */
9195 /* accept other parameters */
9206 /* parse a function defined by symbol 'sym' and generate its code in
9207 'cur_text_section' */
9208 static void gen_function(Sym
*sym
)
9210 int saved_nocode_wanted
= nocode_wanted
;
9212 ind
= cur_text_section
->data_offset
;
9213 /* NOTE: we patch the symbol size later */
9214 put_extern_sym(sym
, cur_text_section
, ind
, 0);
9215 funcname
= get_tok_str(sym
->v
, NULL
);
9217 /* put debug symbol */
9219 put_func_debug(sym
);
9220 /* push a dummy symbol to enable local sym storage */
9221 sym_push2(&local_stack
, SYM_FIELD
, 0, 0);
9222 gfunc_prolog(&sym
->type
);
9224 block(NULL
, NULL
, NULL
, NULL
, 0, 0);
9227 cur_text_section
->data_offset
= ind
;
9228 label_pop(&global_label_stack
, NULL
);
9229 sym_pop(&local_stack
, NULL
); /* reset local stack */
9230 /* end of function */
9231 /* patch symbol size */
9232 ((Elf32_Sym
*)symtab_section
->data
)[sym
->c
].st_size
=
9235 put_stabn(N_FUN
, 0, 0, ind
- func_ind
);
9237 funcname
= ""; /* for safety */
9238 func_vt
.t
= VT_VOID
; /* for safety */
9239 ind
= 0; /* for safety */
9240 nocode_wanted
= saved_nocode_wanted
;
9243 static void gen_inline_functions(void)
9247 int *str
, inline_generated
;
9249 /* iterate while inline function are referenced */
9251 inline_generated
= 0;
9252 for(sym
= global_stack
; sym
!= NULL
; sym
= sym
->prev
) {
9254 if (((type
->t
& VT_BTYPE
) == VT_FUNC
) &&
9255 (type
->t
& (VT_STATIC
| VT_INLINE
)) ==
9256 (VT_STATIC
| VT_INLINE
) &&
9258 /* the function was used: generate its code and
9259 convert it to a normal function */
9260 str
= INLINE_DEF(sym
->r
);
9261 sym
->r
= VT_SYM
| VT_CONST
;
9262 sym
->type
.t
&= ~VT_INLINE
;
9266 cur_text_section
= text_section
;
9268 macro_ptr
= NULL
; /* fail safe */
9271 inline_generated
= 1;
9274 if (!inline_generated
)
9278 /* free all remaining inline function tokens */
9279 for(sym
= global_stack
; sym
!= NULL
; sym
= sym
->prev
) {
9281 if (((type
->t
& VT_BTYPE
) == VT_FUNC
) &&
9282 (type
->t
& (VT_STATIC
| VT_INLINE
)) ==
9283 (VT_STATIC
| VT_INLINE
)) {
9284 //gr printf("sym %d %s\n", sym->r, get_tok_str(sym->v, NULL));
9285 if (sym
->r
== (VT_SYM
| VT_CONST
)) //gr beware!
9287 str
= INLINE_DEF(sym
->r
);
9289 sym
->r
= 0; /* fail safe */
9294 /* 'l' is VT_LOCAL or VT_CONST to define default storage type */
9295 static void decl(int l
)
9303 if (!parse_btype(&btype
, &ad
)) {
9304 /* skip redundant ';' */
9305 /* XXX: find more elegant solution */
9310 if (l
== VT_CONST
&&
9311 (tok
== TOK_ASM1
|| tok
== TOK_ASM2
|| tok
== TOK_ASM3
)) {
9312 /* global asm block */
9316 /* special test for old K&R protos without explicit int
9317 type. Only accepted when defining global data */
9318 if (l
== VT_LOCAL
|| tok
< TOK_DEFINE
)
9322 if (((btype
.t
& VT_BTYPE
) == VT_ENUM
||
9323 (btype
.t
& VT_BTYPE
) == VT_STRUCT
) &&
9325 /* we accept no variable after */
9329 while (1) { /* iterate thru each declaration */
9331 type_decl(&type
, &ad
, &v
, TYPE_DIRECT
);
9335 type_to_str(buf
, sizeof(buf
), t
, get_tok_str(v
, NULL
));
9336 printf("type = '%s'\n", buf
);
9339 if ((type
.t
& VT_BTYPE
) == VT_FUNC
) {
9340 /* if old style function prototype, we accept a
9343 if (sym
->c
== FUNC_OLD
)
9344 func_decl_list(sym
);
9349 error("cannot use local functions");
9350 if ((type
.t
& VT_BTYPE
) != VT_FUNC
)
9351 expect("function definition");
9353 /* reject abstract declarators in function definition */
9355 while ((sym
= sym
->next
) != NULL
)
9356 if (!(sym
->v
& ~SYM_FIELD
))
9357 expect("identifier");
9359 /* XXX: cannot do better now: convert extern line to static inline */
9360 if ((type
.t
& (VT_EXTERN
| VT_INLINE
)) == (VT_EXTERN
| VT_INLINE
))
9361 type
.t
= (type
.t
& ~VT_EXTERN
) | VT_STATIC
;
9365 if ((sym
->type
.t
& VT_BTYPE
) != VT_FUNC
)
9367 /* specific case: if not func_call defined, we put
9368 the one of the prototype */
9369 /* XXX: should have default value */
9370 r
= sym
->type
.ref
->r
;
9371 if (FUNC_CALL(r
) != FUNC_CDECL
9372 && FUNC_CALL(type
.ref
->r
) == FUNC_CDECL
)
9373 FUNC_CALL(type
.ref
->r
) = FUNC_CALL(r
);
9375 FUNC_EXPORT(type
.ref
->r
) = 1;
9377 if (!is_compatible_types(&sym
->type
, &type
)) {
9379 error("incompatible types for redefinition of '%s'",
9380 get_tok_str(v
, NULL
));
9382 /* if symbol is already defined, then put complete type */
9385 /* put function symbol */
9386 sym
= global_identifier_push(v
, type
.t
, 0);
9387 sym
->type
.ref
= type
.ref
;
9390 /* static inline functions are just recorded as a kind
9391 of macro. Their code will be emitted at the end of
9392 the compilation unit only if they are used */
9393 if ((type
.t
& (VT_INLINE
| VT_STATIC
)) ==
9394 (VT_INLINE
| VT_STATIC
)) {
9395 TokenString func_str
;
9398 tok_str_new(&func_str
);
9404 error("unexpected end of file");
9405 tok_str_add_tok(&func_str
);
9410 } else if (t
== '}') {
9412 if (block_level
== 0)
9416 tok_str_add(&func_str
, -1);
9417 tok_str_add(&func_str
, 0);
9418 INLINE_DEF(sym
->r
) = func_str
.str
;
9420 /* compute text section */
9421 cur_text_section
= ad
.section
;
9422 if (!cur_text_section
)
9423 cur_text_section
= text_section
;
9424 sym
->r
= VT_SYM
| VT_CONST
;
9429 if (btype
.t
& VT_TYPEDEF
) {
9430 /* save typedefed type */
9431 /* XXX: test storage specifiers ? */
9432 sym
= sym_push(v
, &type
, 0, 0);
9433 sym
->type
.t
|= VT_TYPEDEF
;
9434 } else if ((type
.t
& VT_BTYPE
) == VT_FUNC
) {
9435 /* external function definition */
9436 /* specific case for func_call attribute */
9438 type
.ref
->r
= ad
.func_attr
;
9439 external_sym(v
, &type
, 0);
9441 /* not lvalue if array */
9443 if (!(type
.t
& VT_ARRAY
))
9444 r
|= lvalue_type(type
.t
);
9445 has_init
= (tok
== '=');
9446 if ((btype
.t
& VT_EXTERN
) ||
9447 ((type
.t
& VT_ARRAY
) && (type
.t
& VT_STATIC
) &&
9448 !has_init
&& l
== VT_CONST
&& type
.ref
->c
< 0)) {
9449 /* external variable */
9450 /* NOTE: as GCC, uninitialized global static
9451 arrays of null size are considered as
9453 external_sym(v
, &type
, r
);
9455 type
.t
|= (btype
.t
& VT_STATIC
); /* Retain "static". */
9456 if (type
.t
& VT_STATIC
)
9462 decl_initializer_alloc(&type
, &ad
, r
,
9476 /* better than nothing, but needs extension to handle '-E' option
9478 static void preprocess_init(TCCState
*s1
)
9480 s1
->include_stack_ptr
= s1
->include_stack
;
9481 /* XXX: move that before to avoid having to initialize
9482 file->ifdef_stack_ptr ? */
9483 s1
->ifdef_stack_ptr
= s1
->ifdef_stack
;
9484 file
->ifdef_stack_ptr
= s1
->ifdef_stack_ptr
;
9486 /* XXX: not ANSI compliant: bound checking says error */
9488 s1
->pack_stack
[0] = 0;
9489 s1
->pack_stack_ptr
= s1
->pack_stack
;
9492 /* compile the C file opened in 'file'. Return non zero if errors. */
9493 static int tcc_compile(TCCState
*s1
)
9497 volatile int section_sym
;
9500 printf("%s: **** new file\n", file
->filename
);
9502 preprocess_init(s1
);
9505 anon_sym
= SYM_FIRST_ANOM
;
9507 /* file info: full path + filename */
9508 section_sym
= 0; /* avoid warning */
9510 section_sym
= put_elf_sym(symtab_section
, 0, 0,
9511 ELF32_ST_INFO(STB_LOCAL
, STT_SECTION
), 0,
9512 text_section
->sh_num
, NULL
);
9513 getcwd(buf
, sizeof(buf
));
9515 normalize_slashes(buf
);
9517 pstrcat(buf
, sizeof(buf
), "/");
9518 put_stabs_r(buf
, N_SO
, 0, 0,
9519 text_section
->data_offset
, text_section
, section_sym
);
9520 put_stabs_r(file
->filename
, N_SO
, 0, 0,
9521 text_section
->data_offset
, text_section
, section_sym
);
9523 /* an elf symbol of type STT_FILE must be put so that STB_LOCAL
9524 symbols can be safely used */
9525 put_elf_sym(symtab_section
, 0, 0,
9526 ELF32_ST_INFO(STB_LOCAL
, STT_FILE
), 0,
9527 SHN_ABS
, file
->filename
);
9529 /* define some often used types */
9530 int_type
.t
= VT_INT
;
9532 char_pointer_type
.t
= VT_BYTE
;
9533 mk_pointer(&char_pointer_type
);
9535 func_old_type
.t
= VT_FUNC
;
9536 func_old_type
.ref
= sym_push(SYM_FIELD
, &int_type
, FUNC_CDECL
, FUNC_OLD
);
9538 #if defined(TCC_ARM_EABI) && defined(TCC_ARM_VFP)
9539 float_type
.t
= VT_FLOAT
;
9540 double_type
.t
= VT_DOUBLE
;
9542 func_float_type
.t
= VT_FUNC
;
9543 func_float_type
.ref
= sym_push(SYM_FIELD
, &float_type
, FUNC_CDECL
, FUNC_OLD
);
9544 func_double_type
.t
= VT_FUNC
;
9545 func_double_type
.ref
= sym_push(SYM_FIELD
, &double_type
, FUNC_CDECL
, FUNC_OLD
);
9549 /* define 'void *alloca(unsigned int)' builtin function */
9554 sym
= sym_push(p
, mk_pointer(VT_VOID
), FUNC_CDECL
, FUNC_NEW
);
9555 s1
= sym_push(SYM_FIELD
, VT_UNSIGNED
| VT_INT
, 0, 0);
9558 sym_push(TOK_alloca
, VT_FUNC
| (p
<< VT_STRUCT_SHIFT
), VT_CONST
, 0);
9562 define_start
= define_stack
;
9565 if (setjmp(s1
->error_jmp_buf
) == 0) {
9567 s1
->error_set_jmp_enabled
= 1;
9569 ch
= file
->buf_ptr
[0];
9570 tok_flags
= TOK_FLAG_BOL
| TOK_FLAG_BOF
;
9571 parse_flags
= PARSE_FLAG_PREPROCESS
| PARSE_FLAG_TOK_NUM
;
9575 expect("declaration");
9577 /* end of translation unit info */
9579 put_stabs_r(NULL
, N_SO
, 0, 0,
9580 text_section
->data_offset
, text_section
, section_sym
);
9583 s1
->error_set_jmp_enabled
= 0;
9585 /* reset define stack, but leave -Dsymbols (may be incorrect if
9586 they are undefined) */
9587 free_defines(define_start
);
9589 gen_inline_functions();
9591 sym_pop(&global_stack
, NULL
);
9592 sym_pop(&local_stack
, NULL
);
9594 return s1
->nb_errors
!= 0 ? -1 : 0;
9597 /* Preprocess the current file */
9598 /* XXX: add line and file infos, add options to preserve spaces */
9599 static int tcc_preprocess(TCCState
*s1
)
9604 preprocess_init(s1
);
9606 define_start
= define_stack
;
9608 ch
= file
->buf_ptr
[0];
9609 tok_flags
= TOK_FLAG_BOL
| TOK_FLAG_BOF
;
9610 parse_flags
= PARSE_FLAG_ASM_COMMENTS
| PARSE_FLAG_PREPROCESS
|
9611 PARSE_FLAG_LINEFEED
;
9615 if (tok
== TOK_EOF
) {
9617 } else if (tok
== TOK_LINEFEED
) {
9621 fputc(' ', s1
->outfile
);
9624 fputs(get_tok_str(tok
, &tokc
), s1
->outfile
);
9627 free_defines(define_start
);
9632 int tcc_compile_string(TCCState
*s
, const char *str
)
9634 BufferedFile bf1
, *bf
= &bf1
;
9638 /* init file structure */
9640 /* XXX: avoid copying */
9642 buf
= tcc_malloc(len
+ 1);
9645 memcpy(buf
, str
, len
);
9648 bf
->buf_end
= buf
+ len
;
9649 pstrcpy(bf
->filename
, sizeof(bf
->filename
), "<string>");
9652 ret
= tcc_compile(s
);
9656 /* currently, no need to close */
9661 /* define a preprocessor symbol. A value can also be provided with the '=' operator */
9662 void tcc_define_symbol(TCCState
*s1
, const char *sym
, const char *value
)
9664 BufferedFile bf1
, *bf
= &bf1
;
9666 pstrcpy(bf
->buffer
, IO_BUF_SIZE
, sym
);
9667 pstrcat(bf
->buffer
, IO_BUF_SIZE
, " ");
9671 pstrcat(bf
->buffer
, IO_BUF_SIZE
, value
);
9673 /* init file structure */
9675 bf
->buf_ptr
= bf
->buffer
;
9676 bf
->buf_end
= bf
->buffer
+ strlen(bf
->buffer
);
9677 *bf
->buf_end
= CH_EOB
;
9678 bf
->filename
[0] = '\0';
9682 s1
->include_stack_ptr
= s1
->include_stack
;
9684 /* parse with define parser */
9685 ch
= file
->buf_ptr
[0];
9691 /* undefine a preprocessor symbol */
9692 void tcc_undefine_symbol(TCCState
*s1
, const char *sym
)
9696 ts
= tok_alloc(sym
, strlen(sym
));
9697 s
= define_find(ts
->tok
);
9698 /* undefine symbol by putting an invalid name */
9703 #ifdef CONFIG_TCC_ASM
9705 #ifdef TCC_TARGET_I386
9706 #include "i386-asm.c"
9711 static void asm_instr(void)
9713 error("inline asm() not supported");
9715 static void asm_global_instr(void)
9717 error("inline asm() not supported");
9723 #ifdef TCC_TARGET_COFF
9724 #include "tcccoff.c"
9727 #ifdef TCC_TARGET_PE
9731 /* print the position in the source file of PC value 'pc' by reading
9732 the stabs debug information */
9733 static void rt_printline(unsigned long wanted_pc
)
9735 Stab_Sym
*sym
, *sym_end
;
9736 char func_name
[128], last_func_name
[128];
9737 unsigned long func_addr
, last_pc
, pc
;
9738 const char *incl_files
[INCLUDE_STACK_SIZE
];
9739 int incl_index
, len
, last_line_num
, i
;
9740 const char *str
, *p
;
9742 fprintf(stderr
, "0x%08lx:", wanted_pc
);
9744 func_name
[0] = '\0';
9747 last_func_name
[0] = '\0';
9748 last_pc
= 0xffffffff;
9750 sym
= (Stab_Sym
*)stab_section
->data
+ 1;
9751 sym_end
= (Stab_Sym
*)(stab_section
->data
+ stab_section
->data_offset
);
9752 while (sym
< sym_end
) {
9753 switch(sym
->n_type
) {
9754 /* function start or end */
9756 if (sym
->n_strx
== 0) {
9757 /* we test if between last line and end of function */
9758 pc
= sym
->n_value
+ func_addr
;
9759 if (wanted_pc
>= last_pc
&& wanted_pc
< pc
)
9761 func_name
[0] = '\0';
9764 str
= stabstr_section
->data
+ sym
->n_strx
;
9765 p
= strchr(str
, ':');
9767 pstrcpy(func_name
, sizeof(func_name
), str
);
9770 if (len
> sizeof(func_name
) - 1)
9771 len
= sizeof(func_name
) - 1;
9772 memcpy(func_name
, str
, len
);
9773 func_name
[len
] = '\0';
9775 func_addr
= sym
->n_value
;
9778 /* line number info */
9780 pc
= sym
->n_value
+ func_addr
;
9781 if (wanted_pc
>= last_pc
&& wanted_pc
< pc
)
9784 last_line_num
= sym
->n_desc
;
9786 strcpy(last_func_name
, func_name
);
9790 str
= stabstr_section
->data
+ sym
->n_strx
;
9792 if (incl_index
< INCLUDE_STACK_SIZE
) {
9793 incl_files
[incl_index
++] = str
;
9801 if (sym
->n_strx
== 0) {
9802 incl_index
= 0; /* end of translation unit */
9804 str
= stabstr_section
->data
+ sym
->n_strx
;
9805 /* do not add path */
9807 if (len
> 0 && str
[len
- 1] != '/')
9815 /* second pass: we try symtab symbols (no line number info) */
9818 Elf32_Sym
*sym
, *sym_end
;
9821 sym_end
= (Elf32_Sym
*)(symtab_section
->data
+ symtab_section
->data_offset
);
9822 for(sym
= (Elf32_Sym
*)symtab_section
->data
+ 1;
9825 type
= ELF32_ST_TYPE(sym
->st_info
);
9826 if (type
== STT_FUNC
) {
9827 if (wanted_pc
>= sym
->st_value
&&
9828 wanted_pc
< sym
->st_value
+ sym
->st_size
) {
9829 pstrcpy(last_func_name
, sizeof(last_func_name
),
9830 strtab_section
->data
+ sym
->st_name
);
9836 /* did not find any info: */
9837 fprintf(stderr
, " ???\n");
9840 if (last_func_name
[0] != '\0') {
9841 fprintf(stderr
, " %s()", last_func_name
);
9843 if (incl_index
> 0) {
9844 fprintf(stderr
, " (%s:%d",
9845 incl_files
[incl_index
- 1], last_line_num
);
9846 for(i
= incl_index
- 2; i
>= 0; i
--)
9847 fprintf(stderr
, ", included from %s", incl_files
[i
]);
9848 fprintf(stderr
, ")");
9850 fprintf(stderr
, "\n");
9853 #if !defined(_WIN32) && !defined(CONFIG_TCCBOOT)
9857 /* fix for glibc 2.1 */
9863 /* return the PC at frame level 'level'. Return non zero if not found */
9864 static int rt_get_caller_pc(unsigned long *paddr
,
9865 ucontext_t
*uc
, int level
)
9871 #if defined(__FreeBSD__)
9872 *paddr
= uc
->uc_mcontext
.mc_eip
;
9873 #elif defined(__dietlibc__)
9874 *paddr
= uc
->uc_mcontext
.eip
;
9876 *paddr
= uc
->uc_mcontext
.gregs
[REG_EIP
];
9880 #if defined(__FreeBSD__)
9881 fp
= uc
->uc_mcontext
.mc_ebp
;
9882 #elif defined(__dietlibc__)
9883 fp
= uc
->uc_mcontext
.ebp
;
9885 fp
= uc
->uc_mcontext
.gregs
[REG_EBP
];
9887 for(i
=1;i
<level
;i
++) {
9888 /* XXX: check address validity with program info */
9889 if (fp
<= 0x1000 || fp
>= 0xc0000000)
9891 fp
= ((unsigned long *)fp
)[0];
9893 *paddr
= ((unsigned long *)fp
)[1];
9899 #warning add arch specific rt_get_caller_pc()
9901 static int rt_get_caller_pc(unsigned long *paddr
,
9902 ucontext_t
*uc
, int level
)
9908 /* emit a run time error at position 'pc' */
9909 void rt_error(ucontext_t
*uc
, const char *fmt
, ...)
9916 fprintf(stderr
, "Runtime error: ");
9917 vfprintf(stderr
, fmt
, ap
);
9918 fprintf(stderr
, "\n");
9919 for(i
=0;i
<num_callers
;i
++) {
9920 if (rt_get_caller_pc(&pc
, uc
, i
) < 0)
9923 fprintf(stderr
, "at ");
9925 fprintf(stderr
, "by ");
9932 /* signal handler for fatal errors */
9933 static void sig_error(int signum
, siginfo_t
*siginf
, void *puc
)
9935 ucontext_t
*uc
= puc
;
9939 switch(siginf
->si_code
) {
9942 rt_error(uc
, "division by zero");
9945 rt_error(uc
, "floating point exception");
9951 if (rt_bound_error_msg
&& *rt_bound_error_msg
)
9952 rt_error(uc
, *rt_bound_error_msg
);
9954 rt_error(uc
, "dereferencing invalid pointer");
9957 rt_error(uc
, "illegal instruction");
9960 rt_error(uc
, "abort() called");
9963 rt_error(uc
, "caught signal %d", signum
);
9970 /* do all relocations (needed before using tcc_get_symbol()) */
9971 int tcc_relocate(TCCState
*s1
)
9978 #ifdef TCC_TARGET_PE
9981 tcc_add_runtime(s1
);
9984 relocate_common_syms();
9986 tcc_add_linker_symbols(s1
);
9987 #ifndef TCC_TARGET_PE
9988 build_got_entries(s1
);
9990 /* compute relocation address : section are relocated in place. We
9991 also alloc the bss space */
9992 for(i
= 1; i
< s1
->nb_sections
; i
++) {
9993 s
= s1
->sections
[i
];
9994 if (s
->sh_flags
& SHF_ALLOC
) {
9995 if (s
->sh_type
== SHT_NOBITS
)
9996 s
->data
= tcc_mallocz(s
->data_offset
);
9997 s
->sh_addr
= (unsigned long)s
->data
;
10001 relocate_syms(s1
, 1);
10003 if (s1
->nb_errors
!= 0)
10006 /* relocate each section */
10007 for(i
= 1; i
< s1
->nb_sections
; i
++) {
10008 s
= s1
->sections
[i
];
10010 relocate_section(s1
, s
);
10013 /* mark executable sections as executable in memory */
10014 for(i
= 1; i
< s1
->nb_sections
; i
++) {
10015 s
= s1
->sections
[i
];
10016 if ((s
->sh_flags
& (SHF_ALLOC
| SHF_EXECINSTR
)) ==
10017 (SHF_ALLOC
| SHF_EXECINSTR
))
10018 set_pages_executable(s
->data
, s
->data_offset
);
10023 /* launch the compiled program with the given arguments */
10024 int tcc_run(TCCState
*s1
, int argc
, char **argv
)
10026 int (*prog_main
)(int, char **);
10028 if (tcc_relocate(s1
) < 0)
10031 prog_main
= tcc_get_symbol_err(s1
, "main");
10034 #if defined(_WIN32) || defined(CONFIG_TCCBOOT)
10035 error("debug mode currently not available for Windows");
10037 struct sigaction sigact
;
10038 /* install TCC signal handlers to print debug info on fatal
10040 sigact
.sa_flags
= SA_SIGINFO
| SA_RESETHAND
;
10041 sigact
.sa_sigaction
= sig_error
;
10042 sigemptyset(&sigact
.sa_mask
);
10043 sigaction(SIGFPE
, &sigact
, NULL
);
10044 sigaction(SIGILL
, &sigact
, NULL
);
10045 sigaction(SIGSEGV
, &sigact
, NULL
);
10046 sigaction(SIGBUS
, &sigact
, NULL
);
10047 sigaction(SIGABRT
, &sigact
, NULL
);
10051 #ifdef CONFIG_TCC_BCHECK
10052 if (do_bounds_check
) {
10053 void (*bound_init
)(void);
10055 /* set error function */
10056 rt_bound_error_msg
= (void *)tcc_get_symbol_err(s1
,
10057 "__bound_error_msg");
10059 /* XXX: use .init section so that it also work in binary ? */
10060 bound_init
= (void *)tcc_get_symbol_err(s1
, "__bound_init");
10064 return (*prog_main
)(argc
, argv
);
10067 void tcc_memstats(void)
10070 printf("memory in use: %d\n", mem_cur_size
);
10074 static void tcc_cleanup(void)
10078 if (NULL
== tcc_state
)
10082 /* free -D defines */
10083 free_defines(NULL
);
10086 n
= tok_ident
- TOK_IDENT
;
10087 for(i
= 0; i
< n
; i
++)
10088 tcc_free(table_ident
[i
]);
10089 tcc_free(table_ident
);
10091 /* free sym_pools */
10092 dynarray_reset(&sym_pools
, &nb_sym_pools
);
10093 /* string buffer */
10094 cstr_free(&tokcstr
);
10095 /* reset symbol stack */
10096 sym_free_first
= NULL
;
10097 /* cleanup from error/setjmp */
10101 TCCState
*tcc_new(void)
10110 s
= tcc_mallocz(sizeof(TCCState
));
10114 s
->output_type
= TCC_OUTPUT_MEMORY
;
10116 /* init isid table */
10117 for(i
=CH_EOF
;i
<256;i
++)
10118 isidnum_table
[i
-CH_EOF
] = isid(i
) || isnum(i
);
10120 /* add all tokens */
10121 table_ident
= NULL
;
10122 memset(hash_ident
, 0, TOK_HASH_SIZE
* sizeof(TokenSym
*));
10124 tok_ident
= TOK_IDENT
;
10133 ts
= tok_alloc(p
, r
- p
- 1);
10137 /* we add dummy defines for some special macros to speed up tests
10138 and to have working defined() */
10139 define_push(TOK___LINE__
, MACRO_OBJ
, NULL
, NULL
);
10140 define_push(TOK___FILE__
, MACRO_OBJ
, NULL
, NULL
);
10141 define_push(TOK___DATE__
, MACRO_OBJ
, NULL
, NULL
);
10142 define_push(TOK___TIME__
, MACRO_OBJ
, NULL
, NULL
);
10144 /* standard defines */
10145 tcc_define_symbol(s
, "__STDC__", NULL
);
10146 tcc_define_symbol(s
, "__STDC_VERSION__", "199901L");
10147 #if defined(TCC_TARGET_I386)
10148 tcc_define_symbol(s
, "__i386__", NULL
);
10150 #if defined(TCC_TARGET_ARM)
10151 tcc_define_symbol(s
, "__ARM_ARCH_4__", NULL
);
10152 tcc_define_symbol(s
, "__arm_elf__", NULL
);
10153 tcc_define_symbol(s
, "__arm_elf", NULL
);
10154 tcc_define_symbol(s
, "arm_elf", NULL
);
10155 tcc_define_symbol(s
, "__arm__", NULL
);
10156 tcc_define_symbol(s
, "__arm", NULL
);
10157 tcc_define_symbol(s
, "arm", NULL
);
10158 tcc_define_symbol(s
, "__APCS_32__", NULL
);
10160 #ifdef TCC_TARGET_PE
10161 tcc_define_symbol(s
, "_WIN32", NULL
);
10163 tcc_define_symbol(s
, "__unix__", NULL
);
10164 tcc_define_symbol(s
, "__unix", NULL
);
10165 #if defined(__linux)
10166 tcc_define_symbol(s
, "__linux__", NULL
);
10167 tcc_define_symbol(s
, "__linux", NULL
);
10170 /* tiny C specific defines */
10171 tcc_define_symbol(s
, "__TINYC__", NULL
);
10173 /* tiny C & gcc defines */
10174 tcc_define_symbol(s
, "__SIZE_TYPE__", "unsigned int");
10175 tcc_define_symbol(s
, "__PTRDIFF_TYPE__", "int");
10176 #ifdef TCC_TARGET_PE
10177 tcc_define_symbol(s
, "__WCHAR_TYPE__", "unsigned short");
10179 tcc_define_symbol(s
, "__WCHAR_TYPE__", "int");
10182 #ifndef TCC_TARGET_PE
10183 /* default library paths */
10184 tcc_add_library_path(s
, "/usr/local/lib");
10185 tcc_add_library_path(s
, "/usr/lib");
10186 tcc_add_library_path(s
, "/lib");
10189 /* no section zero */
10190 dynarray_add((void ***)&s
->sections
, &s
->nb_sections
, NULL
);
10192 /* create standard sections */
10193 text_section
= new_section(s
, ".text", SHT_PROGBITS
, SHF_ALLOC
| SHF_EXECINSTR
);
10194 data_section
= new_section(s
, ".data", SHT_PROGBITS
, SHF_ALLOC
| SHF_WRITE
);
10195 bss_section
= new_section(s
, ".bss", SHT_NOBITS
, SHF_ALLOC
| SHF_WRITE
);
10197 /* symbols are always generated for linking stage */
10198 symtab_section
= new_symtab(s
, ".symtab", SHT_SYMTAB
, 0,
10200 ".hashtab", SHF_PRIVATE
);
10201 strtab_section
= symtab_section
->link
;
10203 /* private symbol table for dynamic symbols */
10204 s
->dynsymtab_section
= new_symtab(s
, ".dynsymtab", SHT_SYMTAB
, SHF_PRIVATE
,
10206 ".dynhashtab", SHF_PRIVATE
);
10207 s
->alacarte_link
= 1;
10209 #ifdef CHAR_IS_UNSIGNED
10210 s
->char_is_unsigned
= 1;
10212 #if defined(TCC_TARGET_PE) && 0
10213 /* XXX: currently the PE linker is not ready to support that */
10214 s
->leading_underscore
= 1;
10219 void tcc_delete(TCCState
*s1
)
10225 /* free all sections */
10226 free_section(s1
->dynsymtab_section
);
10228 for(i
= 1; i
< s1
->nb_sections
; i
++)
10229 free_section(s1
->sections
[i
]);
10230 tcc_free(s1
->sections
);
10232 /* free any loaded DLLs */
10233 for ( i
= 0; i
< s1
->nb_loaded_dlls
; i
++)
10235 DLLReference
*ref
= s1
->loaded_dlls
[i
];
10237 dlclose(ref
->handle
);
10240 /* free loaded dlls array */
10241 dynarray_reset(&s1
->loaded_dlls
, &s1
->nb_loaded_dlls
);
10243 /* free library paths */
10244 dynarray_reset(&s1
->library_paths
, &s1
->nb_library_paths
);
10246 /* free include paths */
10247 dynarray_reset(&s1
->cached_includes
, &s1
->nb_cached_includes
);
10248 dynarray_reset(&s1
->include_paths
, &s1
->nb_include_paths
);
10249 dynarray_reset(&s1
->sysinclude_paths
, &s1
->nb_sysinclude_paths
);
10254 int tcc_add_include_path(TCCState
*s1
, const char *pathname
)
10258 pathname1
= tcc_strdup(pathname
);
10259 dynarray_add((void ***)&s1
->include_paths
, &s1
->nb_include_paths
, pathname1
);
10263 int tcc_add_sysinclude_path(TCCState
*s1
, const char *pathname
)
10267 pathname1
= tcc_strdup(pathname
);
10268 dynarray_add((void ***)&s1
->sysinclude_paths
, &s1
->nb_sysinclude_paths
, pathname1
);
10272 static int tcc_add_file_internal(TCCState
*s1
, const char *filename
, int flags
)
10277 BufferedFile
*saved_file
;
10279 /* find source file type with extension */
10280 ext
= tcc_fileextension(filename
);
10284 /* open the file */
10286 file
= tcc_open(s1
, filename
);
10288 if (flags
& AFF_PRINT_ERROR
) {
10289 error_noabort("file '%s' not found", filename
);
10295 if (flags
& AFF_PREPROCESS
) {
10296 ret
= tcc_preprocess(s1
);
10297 } else if (!ext
[0] || !strcmp(ext
, "c")) {
10298 /* C file assumed */
10299 ret
= tcc_compile(s1
);
10301 #ifdef CONFIG_TCC_ASM
10302 if (!strcmp(ext
, "S")) {
10303 /* preprocessed assembler */
10304 ret
= tcc_assemble(s1
, 1);
10305 } else if (!strcmp(ext
, "s")) {
10306 /* non preprocessed assembler */
10307 ret
= tcc_assemble(s1
, 0);
10310 #ifdef TCC_TARGET_PE
10311 if (!strcmp(ext
, "def")) {
10312 ret
= pe_load_def_file(s1
, file
->fd
);
10317 /* assume executable format: auto guess file type */
10318 ret
= read(fd
, &ehdr
, sizeof(ehdr
));
10319 lseek(fd
, 0, SEEK_SET
);
10321 error_noabort("could not read header");
10323 } else if (ret
!= sizeof(ehdr
)) {
10324 goto try_load_script
;
10327 if (ehdr
.e_ident
[0] == ELFMAG0
&&
10328 ehdr
.e_ident
[1] == ELFMAG1
&&
10329 ehdr
.e_ident
[2] == ELFMAG2
&&
10330 ehdr
.e_ident
[3] == ELFMAG3
) {
10331 file
->line_num
= 0; /* do not display line number if error */
10332 if (ehdr
.e_type
== ET_REL
) {
10333 ret
= tcc_load_object_file(s1
, fd
, 0);
10334 } else if (ehdr
.e_type
== ET_DYN
) {
10335 if (s1
->output_type
== TCC_OUTPUT_MEMORY
) {
10336 #ifdef TCC_TARGET_PE
10340 h
= dlopen(filename
, RTLD_GLOBAL
| RTLD_LAZY
);
10347 ret
= tcc_load_dll(s1
, fd
, filename
,
10348 (flags
& AFF_REFERENCED_DLL
) != 0);
10351 error_noabort("unrecognized ELF file");
10354 } else if (memcmp((char *)&ehdr
, ARMAG
, 8) == 0) {
10355 file
->line_num
= 0; /* do not display line number if error */
10356 ret
= tcc_load_archive(s1
, fd
);
10358 #ifdef TCC_TARGET_COFF
10359 if (*(uint16_t *)(&ehdr
) == COFF_C67_MAGIC
) {
10360 ret
= tcc_load_coff(s1
, fd
);
10363 #ifdef TCC_TARGET_PE
10364 if (pe_test_res_file(&ehdr
, ret
)) {
10365 ret
= pe_load_res_file(s1
, fd
);
10369 /* as GNU ld, consider it is an ld script if not recognized */
10371 ret
= tcc_load_ldscript(s1
);
10373 error_noabort("unrecognized file type");
10388 int tcc_add_file(TCCState
*s
, const char *filename
)
10390 return tcc_add_file_internal(s
, filename
, AFF_PRINT_ERROR
);
10393 int tcc_add_library_path(TCCState
*s
, const char *pathname
)
10397 pathname1
= tcc_strdup(pathname
);
10398 dynarray_add((void ***)&s
->library_paths
, &s
->nb_library_paths
, pathname1
);
10402 /* find and load a dll. Return non zero if not found */
10403 /* XXX: add '-rpath' option support ? */
10404 static int tcc_add_dll(TCCState
*s
, const char *filename
, int flags
)
10409 for(i
= 0; i
< s
->nb_library_paths
; i
++) {
10410 snprintf(buf
, sizeof(buf
), "%s/%s",
10411 s
->library_paths
[i
], filename
);
10412 if (tcc_add_file_internal(s
, buf
, flags
) == 0)
10418 /* the library name is the same as the argument of the '-l' option */
10419 int tcc_add_library(TCCState
*s
, const char *libraryname
)
10424 /* first we look for the dynamic library if not static linking */
10425 if (!s
->static_link
) {
10426 #ifdef TCC_TARGET_PE
10427 snprintf(buf
, sizeof(buf
), "%s.def", libraryname
);
10429 snprintf(buf
, sizeof(buf
), "lib%s.so", libraryname
);
10431 if (tcc_add_dll(s
, buf
, 0) == 0)
10435 /* then we look for the static library */
10436 for(i
= 0; i
< s
->nb_library_paths
; i
++) {
10437 snprintf(buf
, sizeof(buf
), "%s/lib%s.a",
10438 s
->library_paths
[i
], libraryname
);
10439 if (tcc_add_file_internal(s
, buf
, 0) == 0)
10445 int tcc_add_symbol(TCCState
*s
, const char *name
, unsigned long val
)
10447 add_elf_sym(symtab_section
, val
, 0,
10448 ELF32_ST_INFO(STB_GLOBAL
, STT_NOTYPE
), 0,
10453 int tcc_set_output_type(TCCState
*s
, int output_type
)
10457 s
->output_type
= output_type
;
10459 if (!s
->nostdinc
) {
10460 /* default include paths */
10461 /* XXX: reverse order needed if -isystem support */
10462 #ifndef TCC_TARGET_PE
10463 tcc_add_sysinclude_path(s
, "/usr/local/include");
10464 tcc_add_sysinclude_path(s
, "/usr/include");
10466 snprintf(buf
, sizeof(buf
), "%s/include", tcc_lib_path
);
10467 tcc_add_sysinclude_path(s
, buf
);
10468 #ifdef TCC_TARGET_PE
10469 snprintf(buf
, sizeof(buf
), "%s/include/winapi", tcc_lib_path
);
10470 tcc_add_sysinclude_path(s
, buf
);
10474 /* if bound checking, then add corresponding sections */
10475 #ifdef CONFIG_TCC_BCHECK
10476 if (do_bounds_check
) {
10477 /* define symbol */
10478 tcc_define_symbol(s
, "__BOUNDS_CHECKING_ON", NULL
);
10479 /* create bounds sections */
10480 bounds_section
= new_section(s
, ".bounds",
10481 SHT_PROGBITS
, SHF_ALLOC
);
10482 lbounds_section
= new_section(s
, ".lbounds",
10483 SHT_PROGBITS
, SHF_ALLOC
);
10487 if (s
->char_is_unsigned
) {
10488 tcc_define_symbol(s
, "__CHAR_UNSIGNED__", NULL
);
10491 /* add debug sections */
10494 stab_section
= new_section(s
, ".stab", SHT_PROGBITS
, 0);
10495 stab_section
->sh_entsize
= sizeof(Stab_Sym
);
10496 stabstr_section
= new_section(s
, ".stabstr", SHT_STRTAB
, 0);
10497 put_elf_str(stabstr_section
, "");
10498 stab_section
->link
= stabstr_section
;
10499 /* put first entry */
10500 put_stabs("", 0, 0, 0, 0);
10503 /* add libc crt1/crti objects */
10504 #ifndef TCC_TARGET_PE
10505 if ((output_type
== TCC_OUTPUT_EXE
|| output_type
== TCC_OUTPUT_DLL
) &&
10507 if (output_type
!= TCC_OUTPUT_DLL
)
10508 tcc_add_file(s
, CONFIG_TCC_CRT_PREFIX
"/crt1.o");
10509 tcc_add_file(s
, CONFIG_TCC_CRT_PREFIX
"/crti.o");
10513 #ifdef TCC_TARGET_PE
10514 snprintf(buf
, sizeof(buf
), "%s/lib", tcc_lib_path
);
10515 tcc_add_library_path(s
, buf
);
10521 #define WD_ALL 0x0001 /* warning is activated when using -Wall */
10522 #define FD_INVERT 0x0002 /* invert value before storing */
10524 typedef struct FlagDef
{
10530 static const FlagDef warning_defs
[] = {
10531 { offsetof(TCCState
, warn_unsupported
), 0, "unsupported" },
10532 { offsetof(TCCState
, warn_write_strings
), 0, "write-strings" },
10533 { offsetof(TCCState
, warn_error
), 0, "error" },
10534 { offsetof(TCCState
, warn_implicit_function_declaration
), WD_ALL
,
10535 "implicit-function-declaration" },
10538 static int set_flag(TCCState
*s
, const FlagDef
*flags
, int nb_flags
,
10539 const char *name
, int value
)
10546 if (r
[0] == 'n' && r
[1] == 'o' && r
[2] == '-') {
10550 for(i
= 0, p
= flags
; i
< nb_flags
; i
++, p
++) {
10551 if (!strcmp(r
, p
->name
))
10556 if (p
->flags
& FD_INVERT
)
10558 *(int *)((uint8_t *)s
+ p
->offset
) = value
;
10563 /* set/reset a warning */
10564 int tcc_set_warning(TCCState
*s
, const char *warning_name
, int value
)
10569 if (!strcmp(warning_name
, "all")) {
10570 for(i
= 0, p
= warning_defs
; i
< countof(warning_defs
); i
++, p
++) {
10571 if (p
->flags
& WD_ALL
)
10572 *(int *)((uint8_t *)s
+ p
->offset
) = 1;
10576 return set_flag(s
, warning_defs
, countof(warning_defs
),
10577 warning_name
, value
);
10581 static const FlagDef flag_defs
[] = {
10582 { offsetof(TCCState
, char_is_unsigned
), 0, "unsigned-char" },
10583 { offsetof(TCCState
, char_is_unsigned
), FD_INVERT
, "signed-char" },
10584 { offsetof(TCCState
, nocommon
), FD_INVERT
, "common" },
10585 { offsetof(TCCState
, leading_underscore
), 0, "leading-underscore" },
10588 /* set/reset a flag */
10589 int tcc_set_flag(TCCState
*s
, const char *flag_name
, int value
)
10591 return set_flag(s
, flag_defs
, countof(flag_defs
),
10595 #if !defined(LIBTCC)
10597 static int64_t getclock_us(void)
10602 return (tb
.time
* 1000LL + tb
.millitm
) * 1000LL;
10605 gettimeofday(&tv
, NULL
);
10606 return tv
.tv_sec
* 1000000LL + tv
.tv_usec
;
10612 printf("tcc version " TCC_VERSION
" - Tiny C Compiler - Copyright (C) 2001-2006 Fabrice Bellard\n"
10613 "usage: tcc [-v] [-c] [-o outfile] [-Bdir] [-bench] [-Idir] [-Dsym[=val]] [-Usym]\n"
10614 " [-Wwarn] [-g] [-b] [-bt N] [-Ldir] [-llib] [-shared] [-soname name]\n"
10615 " [-static] [infile1 infile2...] [-run infile args...]\n"
10617 "General options:\n"
10618 " -v display current version, increase verbosity\n"
10619 " -c compile only - generate an object file\n"
10620 " -o outfile set output filename\n"
10621 " -Bdir set tcc internal library path\n"
10622 " -bench output compilation statistics\n"
10623 " -run run compiled source\n"
10624 " -fflag set or reset (with 'no-' prefix) 'flag' (see man page)\n"
10625 " -Wwarning set or reset (with 'no-' prefix) 'warning' (see man page)\n"
10626 " -w disable all warnings\n"
10627 "Preprocessor options:\n"
10628 " -E preprocess only\n"
10629 " -Idir add include path 'dir'\n"
10630 " -Dsym[=val] define 'sym' with value 'val'\n"
10631 " -Usym undefine 'sym'\n"
10632 "Linker options:\n"
10633 " -Ldir add library path 'dir'\n"
10634 " -llib link with dynamic or static library 'lib'\n"
10635 " -shared generate a shared library\n"
10636 " -soname set name for shared library to be used at runtime\n"
10637 " -static static linking\n"
10638 " -rdynamic export all global symbols to dynamic linker\n"
10639 " -r generate (relocatable) object file\n"
10640 "Debugger options:\n"
10641 " -g generate runtime debug info\n"
10642 #ifdef CONFIG_TCC_BCHECK
10643 " -b compile with built-in memory and bounds checker (implies -g)\n"
10645 " -bt N show N callers in stack traces\n"
10649 #define TCC_OPTION_HAS_ARG 0x0001
10650 #define TCC_OPTION_NOSEP 0x0002 /* cannot have space before option and arg */
10652 typedef struct TCCOption
{
10681 TCC_OPTION_nostdinc
,
10682 TCC_OPTION_nostdlib
,
10683 TCC_OPTION_print_search_dirs
,
10684 TCC_OPTION_rdynamic
,
10692 static const TCCOption tcc_options
[] = {
10693 { "h", TCC_OPTION_HELP
, 0 },
10694 { "?", TCC_OPTION_HELP
, 0 },
10695 { "I", TCC_OPTION_I
, TCC_OPTION_HAS_ARG
},
10696 { "D", TCC_OPTION_D
, TCC_OPTION_HAS_ARG
},
10697 { "U", TCC_OPTION_U
, TCC_OPTION_HAS_ARG
},
10698 { "L", TCC_OPTION_L
, TCC_OPTION_HAS_ARG
},
10699 { "B", TCC_OPTION_B
, TCC_OPTION_HAS_ARG
},
10700 { "l", TCC_OPTION_l
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10701 { "bench", TCC_OPTION_bench
, 0 },
10702 { "bt", TCC_OPTION_bt
, TCC_OPTION_HAS_ARG
},
10703 #ifdef CONFIG_TCC_BCHECK
10704 { "b", TCC_OPTION_b
, 0 },
10706 { "g", TCC_OPTION_g
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10707 { "c", TCC_OPTION_c
, 0 },
10708 { "static", TCC_OPTION_static
, 0 },
10709 { "shared", TCC_OPTION_shared
, 0 },
10710 { "soname", TCC_OPTION_soname
, TCC_OPTION_HAS_ARG
},
10711 { "o", TCC_OPTION_o
, TCC_OPTION_HAS_ARG
},
10712 { "run", TCC_OPTION_run
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10713 { "rdynamic", TCC_OPTION_rdynamic
, 0 },
10714 { "r", TCC_OPTION_r
, 0 },
10715 { "Wl,", TCC_OPTION_Wl
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10716 { "W", TCC_OPTION_W
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10717 { "O", TCC_OPTION_O
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10718 { "m", TCC_OPTION_m
, TCC_OPTION_HAS_ARG
},
10719 { "f", TCC_OPTION_f
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10720 { "nostdinc", TCC_OPTION_nostdinc
, 0 },
10721 { "nostdlib", TCC_OPTION_nostdlib
, 0 },
10722 { "print-search-dirs", TCC_OPTION_print_search_dirs
, 0 },
10723 { "v", TCC_OPTION_v
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10724 { "w", TCC_OPTION_w
, 0 },
10725 { "pipe", TCC_OPTION_pipe
, 0},
10726 { "E", TCC_OPTION_E
, 0},
10730 /* convert 'str' into an array of space separated strings */
10731 static int expand_args(char ***pargv
, const char *str
)
10740 while (is_space(*str
))
10745 while (*str
!= '\0' && !is_space(*str
))
10748 arg
= tcc_malloc(len
+ 1);
10749 memcpy(arg
, s1
, len
);
10751 dynarray_add((void ***)&argv
, &argc
, arg
);
10757 static char **files
;
10758 static int nb_files
, nb_libraries
;
10759 static int multiple_files
;
10760 static int print_search_dirs
;
10761 static int output_type
;
10762 static int reloc_output
;
10763 static const char *outfile
;
10765 int parse_args(TCCState
*s
, int argc
, char **argv
)
10768 const TCCOption
*popt
;
10769 const char *optarg
, *p1
, *r1
;
10773 while (optind
< argc
) {
10775 r
= argv
[optind
++];
10776 if (r
[0] != '-' || r
[1] == '\0') {
10777 /* add a new file */
10778 dynarray_add((void ***)&files
, &nb_files
, r
);
10779 if (!multiple_files
) {
10781 /* argv[0] will be this file */
10785 /* find option in table (match only the first chars */
10786 popt
= tcc_options
;
10790 error("invalid option -- '%s'", r
);
10803 if (popt
->flags
& TCC_OPTION_HAS_ARG
) {
10804 if (*r1
!= '\0' || (popt
->flags
& TCC_OPTION_NOSEP
)) {
10807 if (optind
>= argc
)
10808 error("argument to '%s' is missing", r
);
10809 optarg
= argv
[optind
++];
10817 switch(popt
->index
) {
10818 case TCC_OPTION_HELP
:
10822 if (tcc_add_include_path(s
, optarg
) < 0)
10823 error("too many include paths");
10828 sym
= (char *)optarg
;
10829 value
= strchr(sym
, '=');
10834 tcc_define_symbol(s
, sym
, value
);
10838 tcc_undefine_symbol(s
, optarg
);
10841 tcc_add_library_path(s
, optarg
);
10844 /* set tcc utilities path (mainly for tcc development) */
10845 tcc_lib_path
= optarg
;
10848 dynarray_add((void ***)&files
, &nb_files
, r
);
10851 case TCC_OPTION_bench
:
10854 case TCC_OPTION_bt
:
10855 num_callers
= atoi(optarg
);
10857 #ifdef CONFIG_TCC_BCHECK
10859 do_bounds_check
= 1;
10867 multiple_files
= 1;
10868 output_type
= TCC_OUTPUT_OBJ
;
10870 case TCC_OPTION_static
:
10871 s
->static_link
= 1;
10873 case TCC_OPTION_shared
:
10874 output_type
= TCC_OUTPUT_DLL
;
10876 case TCC_OPTION_soname
:
10877 s
->soname
= optarg
;
10880 multiple_files
= 1;
10884 /* generate a .o merging several output files */
10886 output_type
= TCC_OUTPUT_OBJ
;
10888 case TCC_OPTION_nostdinc
:
10891 case TCC_OPTION_nostdlib
:
10894 case TCC_OPTION_print_search_dirs
:
10895 print_search_dirs
= 1;
10897 case TCC_OPTION_run
:
10901 argc1
= expand_args(&argv1
, optarg
);
10903 parse_args(s
, argc1
, argv1
);
10905 multiple_files
= 0;
10906 output_type
= TCC_OUTPUT_MEMORY
;
10911 if (0 == verbose
++)
10912 printf("tcc version %s\n", TCC_VERSION
);
10913 } while (*optarg
++ == 'v');
10916 if (tcc_set_flag(s
, optarg
, 1) < 0 && s
->warn_unsupported
)
10917 goto unsupported_option
;
10920 if (tcc_set_warning(s
, optarg
, 1) < 0 &&
10921 s
->warn_unsupported
)
10922 goto unsupported_option
;
10927 case TCC_OPTION_rdynamic
:
10930 case TCC_OPTION_Wl
:
10933 if (strstart(optarg
, "-Ttext,", &p
)) {
10934 s
->text_addr
= strtoul(p
, NULL
, 16);
10935 s
->has_text_addr
= 1;
10936 } else if (strstart(optarg
, "--oformat,", &p
)) {
10937 if (strstart(p
, "elf32-", NULL
)) {
10938 s
->output_format
= TCC_OUTPUT_FORMAT_ELF
;
10939 } else if (!strcmp(p
, "binary")) {
10940 s
->output_format
= TCC_OUTPUT_FORMAT_BINARY
;
10942 #ifdef TCC_TARGET_COFF
10943 if (!strcmp(p
, "coff")) {
10944 s
->output_format
= TCC_OUTPUT_FORMAT_COFF
;
10948 error("target %s not found", p
);
10951 error("unsupported linker option '%s'", optarg
);
10956 output_type
= TCC_OUTPUT_PREPROCESS
;
10959 if (s
->warn_unsupported
) {
10960 unsupported_option
:
10961 warning("unsupported option '%s'", r
);
10970 int main(int argc
, char **argv
)
10974 int nb_objfiles
, ret
, optind
;
10975 char objfilename
[1024];
10976 int64_t start_time
= 0;
10979 tcc_lib_path
= w32_tcc_lib_path();
10983 output_type
= TCC_OUTPUT_EXE
;
10985 multiple_files
= 1;
10990 print_search_dirs
= 0;
10993 optind
= parse_args(s
, argc
- 1, argv
+ 1);
10994 if (print_search_dirs
) {
10995 /* enough for Linux kernel */
10996 printf("install: %s/\n", tcc_lib_path
);
10999 if (optind
== 0 || nb_files
== 0) {
11000 if (optind
&& verbose
)
11006 nb_objfiles
= nb_files
- nb_libraries
;
11008 /* if outfile provided without other options, we output an
11010 if (outfile
&& output_type
== TCC_OUTPUT_MEMORY
)
11011 output_type
= TCC_OUTPUT_EXE
;
11013 /* check -c consistency : only single file handled. XXX: checks file type */
11014 if (output_type
== TCC_OUTPUT_OBJ
&& !reloc_output
) {
11015 /* accepts only a single input file */
11016 if (nb_objfiles
!= 1)
11017 error("cannot specify multiple files with -c");
11018 if (nb_libraries
!= 0)
11019 error("cannot specify libraries with -c");
11023 if (output_type
== TCC_OUTPUT_PREPROCESS
) {
11025 s
->outfile
= stdout
;
11027 s
->outfile
= fopen(outfile
, "w");
11029 error("could not open '%s", outfile
);
11031 } else if (output_type
!= TCC_OUTPUT_MEMORY
) {
11033 /* compute default outfile name */
11036 strcmp(files
[0], "-") == 0 ? "a" : tcc_basename(files
[0]);
11037 pstrcpy(objfilename
, sizeof(objfilename
), name
);
11038 ext
= tcc_fileextension(objfilename
);
11039 #ifdef TCC_TARGET_PE
11040 if (output_type
== TCC_OUTPUT_DLL
)
11041 strcpy(ext
, ".dll");
11043 if (output_type
== TCC_OUTPUT_EXE
)
11044 strcpy(ext
, ".exe");
11047 if (output_type
== TCC_OUTPUT_OBJ
&& !reloc_output
&& *ext
)
11050 pstrcpy(objfilename
, sizeof(objfilename
), "a.out");
11051 outfile
= objfilename
;
11056 start_time
= getclock_us();
11059 tcc_set_output_type(s
, output_type
);
11061 /* compile or add each files or library */
11062 for(i
= 0; i
< nb_files
&& ret
== 0; i
++) {
11063 const char *filename
;
11065 filename
= files
[i
];
11066 if (output_type
== TCC_OUTPUT_PREPROCESS
) {
11067 if (tcc_add_file_internal(s
, filename
,
11068 AFF_PRINT_ERROR
| AFF_PREPROCESS
) < 0)
11070 } else if (filename
[0] == '-' && filename
[1]) {
11071 if (tcc_add_library(s
, filename
+ 2) < 0)
11072 error("cannot find %s", filename
);
11075 printf("-> %s\n", filename
);
11076 if (tcc_add_file(s
, filename
) < 0)
11081 /* free all files */
11089 total_time
= (double)(getclock_us() - start_time
) / 1000000.0;
11090 if (total_time
< 0.001)
11091 total_time
= 0.001;
11092 if (total_bytes
< 1)
11094 printf("%d idents, %d lines, %d bytes, %0.3f s, %d lines/s, %0.1f MB/s\n",
11095 tok_ident
- TOK_IDENT
, total_lines
, total_bytes
,
11096 total_time
, (int)(total_lines
/ total_time
),
11097 total_bytes
/ total_time
/ 1000000.0);
11100 if (s
->output_type
== TCC_OUTPUT_PREPROCESS
) {
11102 fclose(s
->outfile
);
11103 } else if (s
->output_type
== TCC_OUTPUT_MEMORY
) {
11104 ret
= tcc_run(s
, argc
- optind
, argv
+ optind
);
11106 ret
= tcc_output_file(s
, outfile
) ? 1 : 0;
11108 /* XXX: cannot do it with bound checking because of the malloc hooks */
11109 if (!do_bounds_check
)
11114 printf("memory: %d bytes, max = %d bytes\n", mem_cur_size
, mem_max_size
);