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
43 #include <sys/timeb.h>
45 #define inline __inline
52 #include <sys/ucontext.h>
56 #endif /* !CONFIG_TCCBOOT */
73 /* preprocessor debug */
75 /* include file debug */
83 /* target selection */
84 //#define TCC_TARGET_I386 /* i386 code generator */
85 //#define TCC_TARGET_ARM /* ARMv4 code generator */
86 //#define TCC_TARGET_C67 /* TMS320C67xx code generator */
87 //#define TCC_TARGET_X86_64 /* x86-64 code generator */
89 /* default target is I386 */
90 #if !defined(TCC_TARGET_I386) && !defined(TCC_TARGET_ARM) && \
91 !defined(TCC_TARGET_C67) && !defined(TCC_TARGET_X86_64)
92 #define TCC_TARGET_I386
95 #if !defined(_WIN32) && !defined(TCC_UCLIBC) && !defined(TCC_TARGET_ARM) && \
96 !defined(TCC_TARGET_C67) && !defined(TCC_TARGET_X86_64)
97 #define CONFIG_TCC_BCHECK /* enable bound checking code */
100 #if defined(_WIN32) && !defined(TCC_TARGET_PE)
101 #define CONFIG_TCC_STATIC
104 /* define it to include assembler support */
105 #if !defined(TCC_TARGET_ARM) && !defined(TCC_TARGET_C67) && \
106 !defined(TCC_TARGET_X86_64)
107 #define CONFIG_TCC_ASM
110 /* object format selection */
111 #if defined(TCC_TARGET_C67)
112 #define TCC_TARGET_COFF
121 /* path to find crt1.o, crti.o and crtn.o. Only needed when generating
122 executables or dlls */
123 #define CONFIG_TCC_CRT_PREFIX CONFIG_SYSROOT "/usr/lib"
125 #define INCLUDE_STACK_SIZE 32
126 #define IFDEF_STACK_SIZE 64
127 #define VSTACK_SIZE 256
128 #define STRING_MAX_SIZE 1024
129 #define PACK_STACK_SIZE 8
131 #define TOK_HASH_SIZE 8192 /* must be a power of two */
132 #define TOK_ALLOC_INCR 512 /* must be a power of two */
133 #define TOK_MAX_SIZE 4 /* token max size in int unit when stored in string */
135 /* token symbol management */
136 typedef struct TokenSym
{
137 struct TokenSym
*hash_next
;
138 struct Sym
*sym_define
; /* direct pointer to define */
139 struct Sym
*sym_label
; /* direct pointer to label */
140 struct Sym
*sym_struct
; /* direct pointer to structure */
141 struct Sym
*sym_identifier
; /* direct pointer to identifier */
142 int tok
; /* token number */
148 typedef unsigned short nwchar_t
;
150 typedef int nwchar_t
;
153 typedef struct CString
{
154 int size
; /* size in bytes */
155 void *data
; /* either 'char *' or 'nwchar_t *' */
157 void *data_allocated
; /* if non NULL, data has been malloced */
160 /* type definition */
161 typedef struct CType
{
167 typedef union CValue
{
173 unsigned int ul
; /* address (should be unsigned long on 64 bit cpu) */
175 unsigned long long ull
;
176 struct CString
*cstr
;
182 typedef struct SValue
{
183 CType type
; /* type */
184 unsigned short r
; /* register + flags */
185 unsigned short r2
; /* second register, used for 'long long'
186 type. If not used, set to VT_CONST */
187 CValue c
; /* constant, if VT_CONST */
188 struct Sym
*sym
; /* symbol, if (VT_SYM | VT_CONST) */
191 /* symbol management */
193 int v
; /* symbol token */
194 long r
; /* associated register */
195 long c
; /* associated number */
196 CType type
; /* associated type */
197 struct Sym
*next
; /* next related symbol */
198 struct Sym
*prev
; /* prev symbol in stack */
199 struct Sym
*prev_tok
; /* previous symbol for this token */
202 /* section definition */
203 /* XXX: use directly ELF structure for parameters ? */
204 /* special flag to indicate that the section should not be linked to
206 #define SHF_PRIVATE 0x80000000
208 typedef struct Section
{
209 unsigned long data_offset
; /* current data offset */
210 unsigned char *data
; /* section data */
211 unsigned long data_allocated
; /* used for realloc() handling */
212 int sh_name
; /* elf section name (only used during output) */
213 int sh_num
; /* elf section number */
214 int sh_type
; /* elf section type */
215 int sh_flags
; /* elf section flags */
216 int sh_info
; /* elf section info */
217 int sh_addralign
; /* elf section alignment */
218 int sh_entsize
; /* elf entry size */
219 unsigned long sh_size
; /* section size (only used during output) */
220 unsigned long sh_addr
; /* address at which the section is relocated */
221 unsigned long sh_offset
; /* file offset */
222 int nb_hashed_syms
; /* used to resize the hash table */
223 struct Section
*link
; /* link to another section */
224 struct Section
*reloc
; /* corresponding section for relocation, if any */
225 struct Section
*hash
; /* hash table for symbols */
226 struct Section
*next
;
227 char name
[1]; /* section name */
230 typedef struct DLLReference
{
236 /* GNUC attribute definition */
237 typedef struct AttributeDef
{
241 int func_attr
; /* calling convention, exports, ... */
244 /* -------------------------------------------------- */
245 /* gr: wrappers for casting sym->r for other purposes */
253 #define FUNC_CALL(r) (((func_attr_t*)&(r))->func_call)
254 #define FUNC_EXPORT(r) (((func_attr_t*)&(r))->func_export)
255 #define FUNC_ARGS(r) (((func_attr_t*)&(r))->func_args)
256 #define INLINE_DEF(r) (*(int **)&(r))
257 /* -------------------------------------------------- */
259 #define SYM_STRUCT 0x40000000 /* struct/union/enum symbol space */
260 #define SYM_FIELD 0x20000000 /* struct/union field symbol space */
261 #define SYM_FIRST_ANOM 0x10000000 /* first anonymous sym */
263 /* stored in 'Sym.c' field */
264 #define FUNC_NEW 1 /* ansi function prototype */
265 #define FUNC_OLD 2 /* old function prototype */
266 #define FUNC_ELLIPSIS 3 /* ansi function prototype with ... */
268 /* stored in 'Sym.r' field */
269 #define FUNC_CDECL 0 /* standard c call */
270 #define FUNC_STDCALL 1 /* pascal c call */
271 #define FUNC_FASTCALL1 2 /* first param in %eax */
272 #define FUNC_FASTCALL2 3 /* first parameters in %eax, %edx */
273 #define FUNC_FASTCALL3 4 /* first parameter in %eax, %edx, %ecx */
274 #define FUNC_FASTCALLW 5 /* first parameter in %ecx, %edx */
276 /* field 'Sym.t' for macros */
277 #define MACRO_OBJ 0 /* object like macro */
278 #define MACRO_FUNC 1 /* function like macro */
280 /* field 'Sym.r' for C labels */
281 #define LABEL_DEFINED 0 /* label is defined */
282 #define LABEL_FORWARD 1 /* label is forward defined */
283 #define LABEL_DECLARED 2 /* label is declared but never used */
285 /* type_decl() types */
286 #define TYPE_ABSTRACT 1 /* type without variable */
287 #define TYPE_DIRECT 2 /* type with variable */
289 #define IO_BUF_SIZE 8192
291 typedef struct BufferedFile
{
295 int line_num
; /* current line number - here to simplify code */
296 int ifndef_macro
; /* #ifndef macro / #endif search */
297 int ifndef_macro_saved
; /* saved ifndef_macro */
298 int *ifdef_stack_ptr
; /* ifdef_stack value at the start of the file */
299 char inc_type
; /* type of include */
300 char inc_filename
[512]; /* filename specified by the user */
301 char filename
[1024]; /* current filename - here to simplify code */
302 unsigned char buffer
[IO_BUF_SIZE
+ 1]; /* extra size for CH_EOB char */
305 #define CH_EOB '\\' /* end of buffer or '\0' char in file */
306 #define CH_EOF (-1) /* end of file */
308 /* parsing state (used to save parser state to reparse part of the
309 source several times) */
310 typedef struct ParseState
{
317 /* used to record tokens */
318 typedef struct TokenString
{
325 /* include file cache, used to find files faster and also to eliminate
326 inclusion if the include file is protected by #ifndef ... #endif */
327 typedef struct CachedInclude
{
329 int hash_next
; /* -1 if none */
330 char type
; /* '"' or '>' to give include type */
331 char filename
[1]; /* path specified in #include */
334 #define CACHED_INCLUDES_HASH_SIZE 512
337 static struct BufferedFile
*file
;
339 static CString tok_spaces
; /* spaces before current token */
341 static CString tokcstr
; /* current parsed string, if any */
342 /* additional informations about token */
343 static int tok_flags
;
344 #define TOK_FLAG_BOL 0x0001 /* beginning of line before */
345 #define TOK_FLAG_BOF 0x0002 /* beginning of file before */
346 #define TOK_FLAG_ENDIF 0x0004 /* a endif was found matching starting #ifdef */
347 #define TOK_FLAG_EOF 0x0008 /* end of file */
349 static int *macro_ptr
, *macro_ptr_allocated
;
350 static int *unget_saved_macro_ptr
;
351 static int unget_saved_buffer
[TOK_MAX_SIZE
+ 1];
352 static int unget_buffer_enabled
;
353 static int parse_flags
;
354 #define PARSE_FLAG_PREPROCESS 0x0001 /* activate preprocessing */
355 #define PARSE_FLAG_TOK_NUM 0x0002 /* return numbers instead of TOK_PPNUM */
356 #define PARSE_FLAG_LINEFEED 0x0004 /* line feed is returned as a
357 token. line feed is also
359 #define PARSE_FLAG_ASM_COMMENTS 0x0008 /* '#' can be used for line comment */
361 static Section
*text_section
, *data_section
, *bss_section
; /* predefined sections */
362 static Section
*cur_text_section
; /* current section where function code is
364 #ifdef CONFIG_TCC_ASM
365 static Section
*last_text_section
; /* to handle .previous asm directive */
367 /* bound check related sections */
368 static Section
*bounds_section
; /* contains global data bound description */
369 static Section
*lbounds_section
; /* contains local data bound description */
370 /* symbol sections */
371 static Section
*symtab_section
, *strtab_section
;
374 static Section
*stab_section
, *stabstr_section
;
376 /* loc : local variable index
377 ind : output code index
379 anon_sym: anonymous symbol index
381 static int rsym
, anon_sym
, ind
, loc
;
382 /* expression generation modifiers */
383 static int const_wanted
; /* true if constant wanted */
384 static int nocode_wanted
; /* true if no code generation wanted for an expression */
385 static int global_expr
; /* true if compound literals must be allocated
386 globally (used during initializers parsing */
387 static CType func_vt
; /* current function return type (used by return
390 static int last_line_num
, last_ind
, func_ind
; /* debug last line number and pc */
391 static int tok_ident
;
392 static TokenSym
**table_ident
;
393 static TokenSym
*hash_ident
[TOK_HASH_SIZE
];
394 static char token_buf
[STRING_MAX_SIZE
+ 1];
395 static char *funcname
;
396 static Sym
*global_stack
, *local_stack
;
397 static Sym
*define_stack
;
398 static Sym
*global_label_stack
, *local_label_stack
;
399 /* symbol allocator */
400 #define SYM_POOL_NB (8192 / sizeof(Sym))
401 static Sym
*sym_free_first
;
402 static void **sym_pools
;
403 static int nb_sym_pools
;
405 static SValue vstack
[VSTACK_SIZE
], *vtop
;
406 /* some predefined types */
407 static CType char_pointer_type
, func_old_type
, int_type
;
408 /* true if isid(c) || isnum(c) */
409 static unsigned char isidnum_table
[256-CH_EOF
];
411 /* display some information during compilation */
412 static int verbose
= 0;
414 /* compile with debug symbol (and use them if error during execution) */
415 static int do_debug
= 0;
417 /* compile with built-in memory and bounds checker */
418 static int do_bounds_check
= 0;
420 /* display benchmark infos */
422 static int do_bench
= 0;
424 static int total_lines
;
425 static int total_bytes
;
427 /* use GNU C extensions */
428 static int gnu_ext
= 1;
430 /* use Tiny C extensions */
431 static int tcc_ext
= 1;
433 /* max number of callers shown if error */
434 static int num_callers
= 6;
435 static const char **rt_bound_error_msg
;
437 /* XXX: get rid of this ASAP */
438 static struct TCCState
*tcc_state
;
440 /* give the path of the tcc libraries */
441 static const char *tcc_lib_path
= CONFIG_TCCDIR
;
446 BufferedFile
**include_stack_ptr
;
447 int *ifdef_stack_ptr
;
449 /* include file handling */
450 char **include_paths
;
451 int nb_include_paths
;
452 char **sysinclude_paths
;
453 int nb_sysinclude_paths
;
454 CachedInclude
**cached_includes
;
455 int nb_cached_includes
;
457 char **library_paths
;
458 int nb_library_paths
;
460 /* array of all loaded dlls (including those referenced by loaded
462 DLLReference
**loaded_dlls
;
467 int nb_sections
; /* number of sections, including first dummy section */
472 unsigned long *got_offsets
;
474 /* give the correspondance from symtab indexes to dynsym indexes */
475 int *symtab_to_dynsym
;
477 /* temporary dynamic symbol sections (for dll loading) */
478 Section
*dynsymtab_section
;
479 /* exported dynamic symbol section */
482 int nostdinc
; /* if true, no standard headers are added */
483 int nostdlib
; /* if true, no standard libraries are added */
485 int nocommon
; /* if true, do not use common symbols for .bss data */
487 /* if true, static linking is performed */
490 /* soname as specified on the command line (-soname) */
493 /* if true, all symbols are exported */
496 /* if true, only link in referenced objects from archive */
499 /* address of text section */
500 unsigned long text_addr
;
503 /* output format, see TCC_OUTPUT_FORMAT_xxx */
506 /* C language options */
507 int char_is_unsigned
;
508 int leading_underscore
;
510 /* warning switches */
511 int warn_write_strings
;
512 int warn_unsupported
;
515 int warn_implicit_function_declaration
;
519 void (*error_func
)(void *opaque
, const char *msg
);
520 int error_set_jmp_enabled
;
521 jmp_buf error_jmp_buf
;
524 /* tiny assembler state */
527 /* see include_stack_ptr */
528 BufferedFile
*include_stack
[INCLUDE_STACK_SIZE
];
530 /* see ifdef_stack_ptr */
531 int ifdef_stack
[IFDEF_STACK_SIZE
];
533 /* see cached_includes */
534 int cached_includes_hash
[CACHED_INCLUDES_HASH_SIZE
];
537 int pack_stack
[PACK_STACK_SIZE
];
540 /* output file for preprocessing */
543 #ifdef TCC_TARGET_X86_64
544 /* buffer to store jump tables */
550 /* The current value can be: */
551 #define VT_VALMASK 0x00ff
552 #define VT_CONST 0x00f0 /* constant in vc
553 (must be first non register value) */
554 #define VT_LLOCAL 0x00f1 /* lvalue, offset on stack */
555 #define VT_LOCAL 0x00f2 /* offset on stack */
556 #define VT_CMP 0x00f3 /* the value is stored in processor flags (in vc) */
557 #define VT_JMP 0x00f4 /* value is the consequence of jmp true (even) */
558 #define VT_JMPI 0x00f5 /* value is the consequence of jmp false (odd) */
559 #define VT_LVAL 0x0100 /* var is an lvalue */
560 #define VT_SYM 0x0200 /* a symbol value is added */
561 #define VT_MUSTCAST 0x0400 /* value must be casted to be correct (used for
562 char/short stored in integer registers) */
563 #define VT_MUSTBOUND 0x0800 /* bound checking must be done before
564 dereferencing value */
565 #define VT_BOUNDED 0x8000 /* value is bounded. The address of the
566 bounding function call point is in vc */
567 #define VT_LVAL_BYTE 0x1000 /* lvalue is a byte */
568 #define VT_LVAL_SHORT 0x2000 /* lvalue is a short */
569 #define VT_LVAL_UNSIGNED 0x4000 /* lvalue is unsigned */
570 #define VT_LVAL_TYPE (VT_LVAL_BYTE | VT_LVAL_SHORT | VT_LVAL_UNSIGNED)
573 #define VT_INT 0 /* integer type */
574 #define VT_BYTE 1 /* signed byte type */
575 #define VT_SHORT 2 /* short type */
576 #define VT_VOID 3 /* void type */
577 #define VT_PTR 4 /* pointer */
578 #define VT_ENUM 5 /* enum definition */
579 #define VT_FUNC 6 /* function type */
580 #define VT_STRUCT 7 /* struct/union definition */
581 #define VT_FLOAT 8 /* IEEE float */
582 #define VT_DOUBLE 9 /* IEEE double */
583 #define VT_LDOUBLE 10 /* IEEE long double */
584 #define VT_BOOL 11 /* ISOC99 boolean type */
585 #define VT_LLONG 12 /* 64 bit integer */
586 #define VT_LONG 13 /* long integer (NEVER USED as type, only
588 #define VT_BTYPE 0x000f /* mask for basic type */
589 #define VT_UNSIGNED 0x0010 /* unsigned type */
590 #define VT_ARRAY 0x0020 /* array type (also has VT_PTR) */
591 #define VT_BITFIELD 0x0040 /* bitfield modifier */
592 #define VT_CONSTANT 0x0800 /* const modifier */
593 #define VT_VOLATILE 0x1000 /* volatile modifier */
594 #define VT_SIGNED 0x2000 /* signed type */
597 #define VT_EXTERN 0x00000080 /* extern definition */
598 #define VT_STATIC 0x00000100 /* static variable */
599 #define VT_TYPEDEF 0x00000200 /* typedef definition */
600 #define VT_INLINE 0x00000400 /* inline definition */
602 #define VT_STRUCT_SHIFT 16 /* shift for bitfield shift values */
604 /* type mask (except storage) */
605 #define VT_STORAGE (VT_EXTERN | VT_STATIC | VT_TYPEDEF | VT_INLINE)
606 #define VT_TYPE (~(VT_STORAGE))
610 /* warning: the following compare tokens depend on i386 asm code */
617 #define TOK_Nset 0x98
618 #define TOK_Nclear 0x99
624 #define TOK_LAND 0xa0
628 #define TOK_MID 0xa3 /* inc/dec, to void constant */
630 #define TOK_UDIV 0xb0 /* unsigned division */
631 #define TOK_UMOD 0xb1 /* unsigned modulo */
632 #define TOK_PDIV 0xb2 /* fast division with undefined rounding for pointers */
633 #define TOK_CINT 0xb3 /* number in tokc */
634 #define TOK_CCHAR 0xb4 /* char constant in tokc */
635 #define TOK_STR 0xb5 /* pointer to string in tokc */
636 #define TOK_TWOSHARPS 0xb6 /* ## preprocessing token */
637 #define TOK_LCHAR 0xb7
638 #define TOK_LSTR 0xb8
639 #define TOK_CFLOAT 0xb9 /* float constant */
640 #define TOK_LINENUM 0xba /* line number info */
641 #define TOK_CDOUBLE 0xc0 /* double constant */
642 #define TOK_CLDOUBLE 0xc1 /* long double constant */
643 #define TOK_UMULL 0xc2 /* unsigned 32x32 -> 64 mul */
644 #define TOK_ADDC1 0xc3 /* add with carry generation */
645 #define TOK_ADDC2 0xc4 /* add with carry use */
646 #define TOK_SUBC1 0xc5 /* add with carry generation */
647 #define TOK_SUBC2 0xc6 /* add with carry use */
648 #define TOK_CUINT 0xc8 /* unsigned int constant */
649 #define TOK_CLLONG 0xc9 /* long long constant */
650 #define TOK_CULLONG 0xca /* unsigned long long constant */
651 #define TOK_ARROW 0xcb
652 #define TOK_DOTS 0xcc /* three dots */
653 #define TOK_SHR 0xcd /* unsigned shift right */
654 #define TOK_PPNUM 0xce /* preprocessor number */
656 #define TOK_SHL 0x01 /* shift left */
657 #define TOK_SAR 0x02 /* signed shift right */
659 /* assignement operators : normal operator or 0x80 */
660 #define TOK_A_MOD 0xa5
661 #define TOK_A_AND 0xa6
662 #define TOK_A_MUL 0xaa
663 #define TOK_A_ADD 0xab
664 #define TOK_A_SUB 0xad
665 #define TOK_A_DIV 0xaf
666 #define TOK_A_XOR 0xde
667 #define TOK_A_OR 0xfc
668 #define TOK_A_SHL 0x81
669 #define TOK_A_SAR 0x82
672 #define offsetof(type, field) ((size_t) &((type *)0)->field)
676 #define countof(tab) (sizeof(tab) / sizeof((tab)[0]))
679 /* WARNING: the content of this string encodes token numbers */
680 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";
682 #define TOK_EOF (-1) /* end of file */
683 #define TOK_LINEFEED 10 /* line feed */
685 /* all identificators and strings have token above that */
686 #define TOK_IDENT 256
688 /* only used for i386 asm opcodes definitions */
689 #define DEF_ASM(x) DEF(TOK_ASM_ ## x, #x)
692 DEF(TOK_ASM_ ## x ## b, #x "b") \
693 DEF(TOK_ASM_ ## x ## w, #x "w") \
694 DEF(TOK_ASM_ ## x ## l, #x "l") \
695 DEF(TOK_ASM_ ## x, #x)
698 DEF(TOK_ASM_ ## x ## w, #x "w") \
699 DEF(TOK_ASM_ ## x ## l, #x "l") \
700 DEF(TOK_ASM_ ## x, #x)
703 DEF(TOK_ASM_ ## f ## x ## s, "f" #x "s") \
704 DEF(TOK_ASM_ ## fi ## x ## l, "fi" #x "l") \
705 DEF(TOK_ASM_ ## f ## x ## l, "f" #x "l") \
706 DEF(TOK_ASM_ ## fi ## x ## s, "fi" #x "s")
709 DEF(TOK_ASM_ ## f ## x, "f" #x ) \
710 DEF(TOK_ASM_ ## f ## x ## p, "f" #x "p") \
713 #define DEF_ASMTEST(x) \
745 #define TOK_ASM_int TOK_INT
748 TOK_LAST
= TOK_IDENT
- 1,
749 #define DEF(id, str) id,
754 static const char tcc_keywords
[] =
755 #define DEF(id, str) str "\0"
760 #define TOK_UIDENT TOK_DEFINE
763 #define snprintf _snprintf
764 #define vsnprintf _vsnprintf
766 #define strtold (long double)strtod
767 #define strtof (float)strtod
768 #define strtoll (long long)strtol
770 #elif defined(TCC_UCLIBC) || defined(__FreeBSD__) || defined(__DragonFly__) \
771 || defined(__OpenBSD__)
772 /* currently incorrect */
773 long double strtold(const char *nptr
, char **endptr
)
775 return (long double)strtod(nptr
, endptr
);
777 float strtof(const char *nptr
, char **endptr
)
779 return (float)strtod(nptr
, endptr
);
782 /* XXX: need to define this to use them in non ISOC99 context */
783 extern float strtof (const char *__nptr
, char **__endptr
);
784 extern long double strtold (const char *__nptr
, char **__endptr
);
787 static char *pstrcpy(char *buf
, int buf_size
, const char *s
);
788 static char *pstrcat(char *buf
, int buf_size
, const char *s
);
789 static char *tcc_basename(const char *name
);
790 static char *tcc_fileextension (const char *p
);
792 static void next(void);
793 static void next_nomacro(void);
794 static void parse_expr_type(CType
*type
);
795 static void expr_type(CType
*type
);
796 static void unary_type(CType
*type
);
797 static void block(int *bsym
, int *csym
, int *case_sym
, int *def_sym
,
798 int case_reg
, int is_expr
);
799 static int expr_const(void);
800 static void expr_eq(void);
801 static void gexpr(void);
802 static void gen_inline_functions(void);
803 static void decl(int l
);
804 static void decl_initializer(CType
*type
, Section
*sec
, unsigned long c
,
805 int first
, int size_only
);
806 static void decl_initializer_alloc(CType
*type
, AttributeDef
*ad
, int r
,
807 int has_init
, int v
, int scope
);
809 void gv2(int rc1
, int rc2
);
810 void move_reg(int r
, int s
);
811 void save_regs(int n
);
812 void save_reg(int r
);
817 int get_reg_ex(int rc
,int rc2
);
820 struct macro_level
*prev
;
824 static void macro_subst(TokenString
*tok_str
, Sym
**nested_list
,
825 const int *macro_str
, struct macro_level
**can_read_stream
);
827 void force_charshort_cast(int t
);
828 static void gen_cast(CType
*type
);
830 static Sym
*sym_find(int v
);
831 static Sym
*sym_push(int v
, CType
*type
, int r
, int c
);
834 static int type_size(CType
*type
, int *a
);
835 static inline CType
*pointed_type(CType
*type
);
836 static int pointed_size(CType
*type
);
837 static int lvalue_type(int t
);
838 static int parse_btype(CType
*type
, AttributeDef
*ad
);
839 static void type_decl(CType
*type
, AttributeDef
*ad
, int *v
, int td
);
840 static int compare_types(CType
*type1
, CType
*type2
, int unqualified
);
841 static int is_compatible_types(CType
*type1
, CType
*type2
);
842 static int is_compatible_parameter_types(CType
*type1
, CType
*type2
);
844 int ieee_finite(double d
);
845 void error(const char *fmt
, ...);
847 void vpushll(long long v
);
850 void lexpand_nr(void);
851 static void vpush_global_sym(CType
*type
, int v
);
852 void vset(CType
*type
, int r
, int v
);
853 void type_to_str(char *buf
, int buf_size
,
854 CType
*type
, const char *varstr
);
855 char *get_tok_str(int v
, CValue
*cv
);
856 static Sym
*get_sym_ref(CType
*type
, Section
*sec
,
857 unsigned long offset
, unsigned long size
);
858 static Sym
*external_global_sym(int v
, CType
*type
, int r
);
860 /* section generation */
861 static void section_realloc(Section
*sec
, unsigned long new_size
);
862 static void *section_ptr_add(Section
*sec
, unsigned long size
);
863 static void put_extern_sym(Sym
*sym
, Section
*section
,
864 unsigned long value
, unsigned long size
);
865 static void greloc(Section
*s
, Sym
*sym
, unsigned long addr
, int type
);
866 static int put_elf_str(Section
*s
, const char *sym
);
867 static int put_elf_sym(Section
*s
,
868 unsigned long value
, unsigned long size
,
869 int info
, int other
, int shndx
, const char *name
);
870 static int add_elf_sym(Section
*s
, unsigned long value
, unsigned long size
,
871 int info
, int other
, int sh_num
, const char *name
);
872 static void put_elf_reloc(Section
*symtab
, Section
*s
, unsigned long offset
,
873 int type
, int symbol
);
874 static void put_stabs(const char *str
, int type
, int other
, int desc
,
875 unsigned long value
);
876 static void put_stabs_r(const char *str
, int type
, int other
, int desc
,
877 unsigned long value
, Section
*sec
, int sym_index
);
878 static void put_stabn(int type
, int other
, int desc
, int value
);
879 static void put_stabd(int type
, int other
, int desc
);
880 static int tcc_add_dll(TCCState
*s
, const char *filename
, int flags
);
882 #define AFF_PRINT_ERROR 0x0001 /* print error if file not found */
883 #define AFF_REFERENCED_DLL 0x0002 /* load a referenced dll from another dll */
884 #define AFF_PREPROCESS 0x0004 /* preprocess file */
885 static int tcc_add_file_internal(TCCState
*s
, const char *filename
, int flags
);
888 int tcc_output_coff(TCCState
*s1
, FILE *f
);
891 void *resolve_sym(TCCState
*s1
, const char *sym
, int type
);
892 int pe_load_def_file(struct TCCState
*s1
, int fd
);
893 int pe_test_res_file(void *v
, int size
);
894 int pe_load_res_file(struct TCCState
*s1
, int fd
);
895 void pe_add_runtime(struct TCCState
*s1
);
896 void pe_guess_outfile(char *objfilename
, int output_type
);
897 int pe_output_file(struct TCCState
*s1
, const char *filename
);
901 #ifdef CONFIG_TCC_ASM
903 typedef struct ExprValue
{
908 #define MAX_ASM_OPERANDS 30
910 typedef struct ASMOperand
{
911 int id
; /* GCC 3 optionnal identifier (0 if number only supported */
913 char asm_str
[16]; /* computed asm string for operand */
914 SValue
*vt
; /* C value of the expression */
915 int ref_index
; /* if >= 0, gives reference to a output constraint */
916 int input_index
; /* if >= 0, gives reference to an input constraint */
917 int priority
; /* priority, used to assign registers */
918 int reg
; /* if >= 0, register number used for this operand */
919 int is_llong
; /* true if double register value */
920 int is_memory
; /* true if memory operand */
921 int is_rw
; /* for '+' modifier */
924 static void asm_expr(TCCState
*s1
, ExprValue
*pe
);
925 static int asm_int_expr(TCCState
*s1
);
926 static int find_constraint(ASMOperand
*operands
, int nb_operands
,
927 const char *name
, const char **pp
);
929 static int tcc_assemble(TCCState
*s1
, int do_preprocess
);
933 static void asm_instr(void);
934 static void asm_global_instr(void);
936 /* true if float/double/long double type */
937 static inline int is_float(int t
)
941 return bt
== VT_LDOUBLE
|| bt
== VT_DOUBLE
|| bt
== VT_FLOAT
;
944 #ifdef TCC_TARGET_I386
945 #include "i386-gen.c"
948 #ifdef TCC_TARGET_ARM
952 #ifdef TCC_TARGET_C67
956 #ifdef TCC_TARGET_X86_64
957 #include "x86_64-gen.c"
960 #ifdef CONFIG_TCC_STATIC
962 #define RTLD_LAZY 0x001
963 #define RTLD_NOW 0x002
964 #define RTLD_GLOBAL 0x100
965 #define RTLD_DEFAULT NULL
967 /* dummy function for profiling */
968 void *dlopen(const char *filename
, int flag
)
973 const char *dlerror(void)
978 typedef struct TCCSyms
{
983 #define TCCSYM(a) { #a, &a, },
985 /* add the symbol you want here if no dynamic linking is done */
986 static TCCSyms tcc_syms
[] = {
987 #if !defined(CONFIG_TCCBOOT)
996 void *resolve_sym(TCCState
*s1
, const char *symbol
, int type
)
1000 while (p
->str
!= NULL
) {
1001 if (!strcmp(p
->str
, symbol
))
1008 #elif !defined(_WIN32)
1012 void *resolve_sym(TCCState
*s1
, const char *sym
, int type
)
1014 return dlsym(RTLD_DEFAULT
, sym
);
1019 /********************************************************/
1021 /* we use our own 'finite' function to avoid potential problems with
1022 non standard math libs */
1023 /* XXX: endianness dependent */
1024 int ieee_finite(double d
)
1027 return ((unsigned)((p
[1] | 0x800fffff) + 1)) >> 31;
1030 /* copy a string and truncate it. */
1031 static char *pstrcpy(char *buf
, int buf_size
, const char *s
)
1038 q_end
= buf
+ buf_size
- 1;
1050 /* strcat and truncate. */
1051 static char *pstrcat(char *buf
, int buf_size
, const char *s
)
1056 pstrcpy(buf
+ len
, buf_size
- len
, s
);
1061 static int strstart(const char *str
, const char *val
, const char **ptr
)
1066 while (*q
!= '\0') {
1078 /* extract the basename of a file */
1079 static char *tcc_basename(const char *name
)
1081 char *p
= strchr(name
, 0);
1092 static char *tcc_fileextension (const char *name
)
1094 char *b
= tcc_basename(name
);
1095 char *e
= strrchr(b
, '.');
1096 return e
? e
: strchr(b
, 0);
1100 char *normalize_slashes(char *path
)
1103 for (p
= path
; *p
; ++p
)
1109 char *w32_tcc_lib_path(void)
1111 /* on win32, we suppose the lib and includes are at the location
1113 char path
[1024], *p
;
1114 GetModuleFileNameA(NULL
, path
, sizeof path
);
1115 p
= tcc_basename(normalize_slashes(strlwr(path
)));
1116 if (p
- 5 > path
&& 0 == strncmp(p
- 5, "/bin/", 5))
1121 return strdup(path
);
1125 void set_pages_executable(void *ptr
, unsigned long length
)
1128 unsigned long old_protect
;
1129 VirtualProtect(ptr
, length
, PAGE_EXECUTE_READWRITE
, &old_protect
);
1131 unsigned long start
, end
;
1132 start
= (unsigned long)ptr
& ~(PAGESIZE
- 1);
1133 end
= (unsigned long)ptr
+ length
;
1134 end
= (end
+ PAGESIZE
- 1) & ~(PAGESIZE
- 1);
1135 mprotect((void *)start
, end
- start
, PROT_READ
| PROT_WRITE
| PROT_EXEC
);
1139 /* memory management */
1143 unsigned malloc_usable_size(void*);
1146 static inline void tcc_free(void *ptr
)
1149 mem_cur_size
-= malloc_usable_size(ptr
);
1154 static void *tcc_malloc(unsigned long size
)
1159 error("memory full");
1161 mem_cur_size
+= malloc_usable_size(ptr
);
1162 if (mem_cur_size
> mem_max_size
)
1163 mem_max_size
= mem_cur_size
;
1168 static void *tcc_mallocz(unsigned long size
)
1171 ptr
= tcc_malloc(size
);
1172 memset(ptr
, 0, size
);
1176 static inline void *tcc_realloc(void *ptr
, unsigned long size
)
1180 mem_cur_size
-= malloc_usable_size(ptr
);
1182 ptr1
= realloc(ptr
, size
);
1184 /* NOTE: count not correct if alloc error, but not critical */
1185 mem_cur_size
+= malloc_usable_size(ptr1
);
1186 if (mem_cur_size
> mem_max_size
)
1187 mem_max_size
= mem_cur_size
;
1192 static char *tcc_strdup(const char *str
)
1195 ptr
= tcc_malloc(strlen(str
) + 1);
1200 #define free(p) use_tcc_free(p)
1201 #define malloc(s) use_tcc_malloc(s)
1202 #define realloc(p, s) use_tcc_realloc(p, s)
1204 static void dynarray_add(void ***ptab
, int *nb_ptr
, void *data
)
1211 /* every power of two we double array size */
1212 if ((nb
& (nb
- 1)) == 0) {
1217 pp
= tcc_realloc(pp
, nb_alloc
* sizeof(void *));
1219 error("memory full");
1226 static void dynarray_reset(void *pp
, int *n
)
1229 for (p
= *(void***)pp
; *n
; ++p
, --*n
)
1232 tcc_free(*(void**)pp
);
1236 /* symbol allocator */
1237 static Sym
*__sym_malloc(void)
1239 Sym
*sym_pool
, *sym
, *last_sym
;
1242 sym_pool
= tcc_malloc(SYM_POOL_NB
* sizeof(Sym
));
1243 dynarray_add(&sym_pools
, &nb_sym_pools
, sym_pool
);
1245 last_sym
= sym_free_first
;
1247 for(i
= 0; i
< SYM_POOL_NB
; i
++) {
1248 sym
->next
= last_sym
;
1252 sym_free_first
= last_sym
;
1256 static inline Sym
*sym_malloc(void)
1259 sym
= sym_free_first
;
1261 sym
= __sym_malloc();
1262 sym_free_first
= sym
->next
;
1266 static inline void sym_free(Sym
*sym
)
1268 sym
->next
= sym_free_first
;
1269 sym_free_first
= sym
;
1272 Section
*new_section(TCCState
*s1
, const char *name
, int sh_type
, int sh_flags
)
1276 sec
= tcc_mallocz(sizeof(Section
) + strlen(name
));
1277 strcpy(sec
->name
, name
);
1278 sec
->sh_type
= sh_type
;
1279 sec
->sh_flags
= sh_flags
;
1287 sec
->sh_addralign
= 4;
1290 sec
->sh_addralign
= 1;
1293 sec
->sh_addralign
= 32; /* default conservative alignment */
1297 /* only add section if not private */
1298 if (!(sh_flags
& SHF_PRIVATE
)) {
1299 sec
->sh_num
= s1
->nb_sections
;
1300 dynarray_add((void ***)&s1
->sections
, &s1
->nb_sections
, sec
);
1305 static void free_section(Section
*s
)
1307 if (s
->link
&& (s
->link
->sh_flags
& SHF_PRIVATE
))
1308 free_section(s
->link
);
1309 if (s
->hash
&& (s
->hash
->sh_flags
& SHF_PRIVATE
))
1310 s
->hash
->link
= NULL
, free_section(s
->hash
);
1315 /* realloc section and set its content to zero */
1316 static void section_realloc(Section
*sec
, unsigned long new_size
)
1319 unsigned char *data
;
1321 size
= sec
->data_allocated
;
1324 while (size
< new_size
)
1326 data
= tcc_realloc(sec
->data
, size
);
1328 error("memory full");
1329 memset(data
+ sec
->data_allocated
, 0, size
- sec
->data_allocated
);
1331 sec
->data_allocated
= size
;
1334 /* reserve at least 'size' bytes in section 'sec' from
1335 sec->data_offset. */
1336 static void *section_ptr_add(Section
*sec
, unsigned long size
)
1338 unsigned long offset
, offset1
;
1340 offset
= sec
->data_offset
;
1341 offset1
= offset
+ size
;
1342 if (offset1
> sec
->data_allocated
)
1343 section_realloc(sec
, offset1
);
1344 sec
->data_offset
= offset1
;
1345 return sec
->data
+ offset
;
1348 /* return a reference to a section, and create it if it does not
1350 Section
*find_section(TCCState
*s1
, const char *name
)
1354 for(i
= 1; i
< s1
->nb_sections
; i
++) {
1355 sec
= s1
->sections
[i
];
1356 if (!strcmp(name
, sec
->name
))
1359 /* sections are created as PROGBITS */
1360 return new_section(s1
, name
, SHT_PROGBITS
, SHF_ALLOC
);
1363 #define SECTION_ABS ((void *)1)
1365 /* update sym->c so that it points to an external symbol in section
1366 'section' with value 'value' */
1367 static void put_extern_sym2(Sym
*sym
, Section
*section
,
1368 unsigned long value
, unsigned long size
,
1369 int can_add_underscore
)
1371 int sym_type
, sym_bind
, sh_num
, info
, other
, attr
;
1376 if (section
== NULL
)
1378 else if (section
== SECTION_ABS
)
1381 sh_num
= section
->sh_num
;
1385 if ((sym
->type
.t
& VT_BTYPE
) == VT_FUNC
) {
1386 sym_type
= STT_FUNC
;
1387 #ifdef TCC_TARGET_PE
1389 attr
= sym
->type
.ref
->r
;
1390 if (FUNC_EXPORT(attr
))
1392 if (FUNC_CALL(attr
) == FUNC_STDCALL
)
1396 sym_type
= STT_OBJECT
;
1399 if (sym
->type
.t
& VT_STATIC
)
1400 sym_bind
= STB_LOCAL
;
1402 sym_bind
= STB_GLOBAL
;
1405 name
= get_tok_str(sym
->v
, NULL
);
1406 #ifdef CONFIG_TCC_BCHECK
1407 if (do_bounds_check
) {
1410 /* XXX: avoid doing that for statics ? */
1411 /* if bound checking is activated, we change some function
1412 names by adding the "__bound" prefix */
1415 /* XXX: we rely only on malloc hooks */
1428 strcpy(buf
, "__bound_");
1436 #ifdef TCC_TARGET_PE
1437 if ((other
& 2) && can_add_underscore
) {
1438 sprintf(buf1
, "_%s@%d", name
, FUNC_ARGS(attr
));
1442 if (tcc_state
->leading_underscore
&& can_add_underscore
) {
1444 pstrcpy(buf1
+ 1, sizeof(buf1
) - 1, name
);
1447 info
= ELFW(ST_INFO
)(sym_bind
, sym_type
);
1448 sym
->c
= add_elf_sym(symtab_section
, value
, size
, info
, other
, sh_num
, name
);
1450 esym
= &((ElfW(Sym
) *)symtab_section
->data
)[sym
->c
];
1451 esym
->st_value
= value
;
1452 esym
->st_size
= size
;
1453 esym
->st_shndx
= sh_num
;
1454 esym
->st_other
|= other
;
1458 static void put_extern_sym(Sym
*sym
, Section
*section
,
1459 unsigned long value
, unsigned long size
)
1461 put_extern_sym2(sym
, section
, value
, size
, 1);
1464 /* add a new relocation entry to symbol 'sym' in section 's' */
1465 static void greloc(Section
*s
, Sym
*sym
, unsigned long offset
, int type
)
1468 put_extern_sym(sym
, NULL
, 0, 0);
1469 /* now we can add ELF relocation info */
1470 put_elf_reloc(symtab_section
, s
, offset
, type
, sym
->c
);
1473 static inline int isid(int c
)
1475 return (c
>= 'a' && c
<= 'z') ||
1476 (c
>= 'A' && c
<= 'Z') ||
1480 static inline int isnum(int c
)
1482 return c
>= '0' && c
<= '9';
1485 static inline int isoct(int c
)
1487 return c
>= '0' && c
<= '7';
1490 static inline int toup(int c
)
1492 if (c
>= 'a' && c
<= 'z')
1493 return c
- 'a' + 'A';
1498 static void strcat_vprintf(char *buf
, int buf_size
, const char *fmt
, va_list ap
)
1502 vsnprintf(buf
+ len
, buf_size
- len
, fmt
, ap
);
1505 static void strcat_printf(char *buf
, int buf_size
, const char *fmt
, ...)
1509 strcat_vprintf(buf
, buf_size
, fmt
, ap
);
1513 void error1(TCCState
*s1
, int is_warning
, const char *fmt
, va_list ap
)
1520 for(f
= s1
->include_stack
; f
< s1
->include_stack_ptr
; f
++)
1521 strcat_printf(buf
, sizeof(buf
), "In file included from %s:%d:\n",
1522 (*f
)->filename
, (*f
)->line_num
);
1523 if (file
->line_num
> 0) {
1524 strcat_printf(buf
, sizeof(buf
),
1525 "%s:%d: ", file
->filename
, file
->line_num
);
1527 strcat_printf(buf
, sizeof(buf
),
1528 "%s: ", file
->filename
);
1531 strcat_printf(buf
, sizeof(buf
),
1535 strcat_printf(buf
, sizeof(buf
), "warning: ");
1536 strcat_vprintf(buf
, sizeof(buf
), fmt
, ap
);
1538 if (!s1
->error_func
) {
1539 /* default case: stderr */
1540 fprintf(stderr
, "%s\n", buf
);
1542 s1
->error_func(s1
->error_opaque
, buf
);
1544 if (!is_warning
|| s1
->warn_error
)
1549 void tcc_set_error_func(TCCState
*s
, void *error_opaque
,
1550 void (*error_func
)(void *opaque
, const char *msg
))
1552 s
->error_opaque
= error_opaque
;
1553 s
->error_func
= error_func
;
1557 /* error without aborting current compilation */
1558 void error_noabort(const char *fmt
, ...)
1560 TCCState
*s1
= tcc_state
;
1564 error1(s1
, 0, fmt
, ap
);
1568 void error(const char *fmt
, ...)
1570 TCCState
*s1
= tcc_state
;
1574 error1(s1
, 0, fmt
, ap
);
1576 /* better than nothing: in some cases, we accept to handle errors */
1577 if (s1
->error_set_jmp_enabled
) {
1578 longjmp(s1
->error_jmp_buf
, 1);
1580 /* XXX: eliminate this someday */
1585 void expect(const char *msg
)
1587 error("%s expected", msg
);
1590 void warning(const char *fmt
, ...)
1592 TCCState
*s1
= tcc_state
;
1599 error1(s1
, 1, fmt
, ap
);
1606 error("'%c' expected", c
);
1610 static void test_lvalue(void)
1612 if (!(vtop
->r
& VT_LVAL
))
1616 /* allocate a new token */
1617 static TokenSym
*tok_alloc_new(TokenSym
**pts
, const char *str
, int len
)
1619 TokenSym
*ts
, **ptable
;
1622 if (tok_ident
>= SYM_FIRST_ANOM
)
1623 error("memory full");
1625 /* expand token table if needed */
1626 i
= tok_ident
- TOK_IDENT
;
1627 if ((i
% TOK_ALLOC_INCR
) == 0) {
1628 ptable
= tcc_realloc(table_ident
, (i
+ TOK_ALLOC_INCR
) * sizeof(TokenSym
*));
1630 error("memory full");
1631 table_ident
= ptable
;
1634 ts
= tcc_malloc(sizeof(TokenSym
) + len
);
1635 table_ident
[i
] = ts
;
1636 ts
->tok
= tok_ident
++;
1637 ts
->sym_define
= NULL
;
1638 ts
->sym_label
= NULL
;
1639 ts
->sym_struct
= NULL
;
1640 ts
->sym_identifier
= NULL
;
1642 ts
->hash_next
= NULL
;
1643 memcpy(ts
->str
, str
, len
);
1644 ts
->str
[len
] = '\0';
1649 #define TOK_HASH_INIT 1
1650 #define TOK_HASH_FUNC(h, c) ((h) * 263 + (c))
1652 /* find a token and add it if not found */
1653 static TokenSym
*tok_alloc(const char *str
, int len
)
1655 TokenSym
*ts
, **pts
;
1661 h
= TOK_HASH_FUNC(h
, ((unsigned char *)str
)[i
]);
1662 h
&= (TOK_HASH_SIZE
- 1);
1664 pts
= &hash_ident
[h
];
1669 if (ts
->len
== len
&& !memcmp(ts
->str
, str
, len
))
1671 pts
= &(ts
->hash_next
);
1673 return tok_alloc_new(pts
, str
, len
);
1676 /* CString handling */
1678 static void cstr_realloc(CString
*cstr
, int new_size
)
1683 size
= cstr
->size_allocated
;
1685 size
= 8; /* no need to allocate a too small first string */
1686 while (size
< new_size
)
1688 data
= tcc_realloc(cstr
->data_allocated
, size
);
1690 error("memory full");
1691 cstr
->data_allocated
= data
;
1692 cstr
->size_allocated
= size
;
1697 static inline void cstr_ccat(CString
*cstr
, int ch
)
1700 size
= cstr
->size
+ 1;
1701 if (size
> cstr
->size_allocated
)
1702 cstr_realloc(cstr
, size
);
1703 ((unsigned char *)cstr
->data
)[size
- 1] = ch
;
1707 static void cstr_cat(CString
*cstr
, const char *str
)
1719 /* add a wide char */
1720 static void cstr_wccat(CString
*cstr
, int ch
)
1723 size
= cstr
->size
+ sizeof(nwchar_t
);
1724 if (size
> cstr
->size_allocated
)
1725 cstr_realloc(cstr
, size
);
1726 *(nwchar_t
*)(((unsigned char *)cstr
->data
) + size
- sizeof(nwchar_t
)) = ch
;
1730 static void cstr_new(CString
*cstr
)
1732 memset(cstr
, 0, sizeof(CString
));
1735 /* free string and reset it to NULL */
1736 static void cstr_free(CString
*cstr
)
1738 tcc_free(cstr
->data_allocated
);
1742 #define cstr_reset(cstr) cstr_free(cstr)
1744 /* XXX: unicode ? */
1745 static void add_char(CString
*cstr
, int c
)
1747 if (c
== '\'' || c
== '\"' || c
== '\\') {
1748 /* XXX: could be more precise if char or string */
1749 cstr_ccat(cstr
, '\\');
1751 if (c
>= 32 && c
<= 126) {
1754 cstr_ccat(cstr
, '\\');
1756 cstr_ccat(cstr
, 'n');
1758 cstr_ccat(cstr
, '0' + ((c
>> 6) & 7));
1759 cstr_ccat(cstr
, '0' + ((c
>> 3) & 7));
1760 cstr_ccat(cstr
, '0' + (c
& 7));
1765 /* XXX: buffer overflow */
1766 /* XXX: float tokens */
1767 char *get_tok_str(int v
, CValue
*cv
)
1769 static char buf
[STRING_MAX_SIZE
+ 1];
1770 static CString cstr_buf
;
1776 /* NOTE: to go faster, we give a fixed buffer for small strings */
1777 cstr_reset(&cstr_buf
);
1778 cstr_buf
.data
= buf
;
1779 cstr_buf
.size_allocated
= sizeof(buf
);
1785 /* XXX: not quite exact, but only useful for testing */
1786 sprintf(p
, "%u", cv
->ui
);
1790 /* XXX: not quite exact, but only useful for testing */
1791 sprintf(p
, "%Lu", cv
->ull
);
1794 cstr_ccat(&cstr_buf
, 'L');
1796 cstr_ccat(&cstr_buf
, '\'');
1797 add_char(&cstr_buf
, cv
->i
);
1798 cstr_ccat(&cstr_buf
, '\'');
1799 cstr_ccat(&cstr_buf
, '\0');
1803 len
= cstr
->size
- 1;
1805 add_char(&cstr_buf
, ((unsigned char *)cstr
->data
)[i
]);
1806 cstr_ccat(&cstr_buf
, '\0');
1809 cstr_ccat(&cstr_buf
, 'L');
1812 cstr_ccat(&cstr_buf
, '\"');
1814 len
= cstr
->size
- 1;
1816 add_char(&cstr_buf
, ((unsigned char *)cstr
->data
)[i
]);
1818 len
= (cstr
->size
/ sizeof(nwchar_t
)) - 1;
1820 add_char(&cstr_buf
, ((nwchar_t
*)cstr
->data
)[i
]);
1822 cstr_ccat(&cstr_buf
, '\"');
1823 cstr_ccat(&cstr_buf
, '\0');
1832 return strcpy(p
, "...");
1834 return strcpy(p
, "<<=");
1836 return strcpy(p
, ">>=");
1838 if (v
< TOK_IDENT
) {
1839 /* search in two bytes table */
1853 } else if (v
< tok_ident
) {
1854 return table_ident
[v
- TOK_IDENT
]->str
;
1855 } else if (v
>= SYM_FIRST_ANOM
) {
1856 /* special name for anonymous symbol */
1857 sprintf(p
, "L.%u", v
- SYM_FIRST_ANOM
);
1859 /* should never happen */
1864 return cstr_buf
.data
;
1867 /* push, without hashing */
1868 static Sym
*sym_push2(Sym
**ps
, int v
, int t
, long c
)
1882 /* find a symbol and return its associated structure. 's' is the top
1883 of the symbol stack */
1884 static Sym
*sym_find2(Sym
*s
, int v
)
1894 /* structure lookup */
1895 static inline Sym
*struct_find(int v
)
1898 if ((unsigned)v
>= (unsigned)(tok_ident
- TOK_IDENT
))
1900 return table_ident
[v
]->sym_struct
;
1903 /* find an identifier */
1904 static inline Sym
*sym_find(int v
)
1907 if ((unsigned)v
>= (unsigned)(tok_ident
- TOK_IDENT
))
1909 return table_ident
[v
]->sym_identifier
;
1912 /* push a given symbol on the symbol stack */
1913 static Sym
*sym_push(int v
, CType
*type
, int r
, int c
)
1922 s
= sym_push2(ps
, v
, type
->t
, c
);
1923 s
->type
.ref
= type
->ref
;
1925 /* don't record fields or anonymous symbols */
1927 if (!(v
& SYM_FIELD
) && (v
& ~SYM_STRUCT
) < SYM_FIRST_ANOM
) {
1928 /* record symbol in token array */
1929 ts
= table_ident
[(v
& ~SYM_STRUCT
) - TOK_IDENT
];
1931 ps
= &ts
->sym_struct
;
1933 ps
= &ts
->sym_identifier
;
1940 /* push a global identifier */
1941 static Sym
*global_identifier_push(int v
, int t
, int c
)
1944 s
= sym_push2(&global_stack
, v
, t
, c
);
1945 /* don't record anonymous symbol */
1946 if (v
< SYM_FIRST_ANOM
) {
1947 ps
= &table_ident
[v
- TOK_IDENT
]->sym_identifier
;
1948 /* modify the top most local identifier, so that
1949 sym_identifier will point to 's' when popped */
1951 ps
= &(*ps
)->prev_tok
;
1958 /* pop symbols until top reaches 'b' */
1959 static void sym_pop(Sym
**ptop
, Sym
*b
)
1969 /* remove symbol in token array */
1971 if (!(v
& SYM_FIELD
) && (v
& ~SYM_STRUCT
) < SYM_FIRST_ANOM
) {
1972 ts
= table_ident
[(v
& ~SYM_STRUCT
) - TOK_IDENT
];
1974 ps
= &ts
->sym_struct
;
1976 ps
= &ts
->sym_identifier
;
1987 BufferedFile
*tcc_open(TCCState
*s1
, const char *filename
)
1992 if (strcmp(filename
, "-") == 0)
1993 fd
= 0, filename
= "stdin";
1995 fd
= open(filename
, O_RDONLY
| O_BINARY
);
1996 if ((verbose
== 2 && fd
>= 0) || verbose
== 3)
1997 printf("%s %*s%s\n", fd
< 0 ? "nf":"->",
1998 (s1
->include_stack_ptr
- s1
->include_stack
), "", filename
);
2001 bf
= tcc_malloc(sizeof(BufferedFile
));
2003 bf
->buf_ptr
= bf
->buffer
;
2004 bf
->buf_end
= bf
->buffer
;
2005 bf
->buffer
[0] = CH_EOB
; /* put eob symbol */
2006 pstrcpy(bf
->filename
, sizeof(bf
->filename
), filename
);
2008 normalize_slashes(bf
->filename
);
2011 bf
->ifndef_macro
= 0;
2012 bf
->ifdef_stack_ptr
= s1
->ifdef_stack_ptr
;
2013 // printf("opening '%s'\n", filename);
2017 void tcc_close(BufferedFile
*bf
)
2019 total_lines
+= bf
->line_num
;
2024 /* fill input buffer and peek next char */
2025 static int tcc_peekc_slow(BufferedFile
*bf
)
2028 /* only tries to read if really end of buffer */
2029 if (bf
->buf_ptr
>= bf
->buf_end
) {
2031 #if defined(PARSE_DEBUG)
2036 len
= read(bf
->fd
, bf
->buffer
, len
);
2043 bf
->buf_ptr
= bf
->buffer
;
2044 bf
->buf_end
= bf
->buffer
+ len
;
2045 *bf
->buf_end
= CH_EOB
;
2047 if (bf
->buf_ptr
< bf
->buf_end
) {
2048 return bf
->buf_ptr
[0];
2050 bf
->buf_ptr
= bf
->buf_end
;
2055 /* return the current character, handling end of block if necessary
2057 static int handle_eob(void)
2059 return tcc_peekc_slow(file
);
2062 /* read next char from current input file and handle end of input buffer */
2063 static inline void inp(void)
2065 ch
= *(++(file
->buf_ptr
));
2066 /* end of buffer/file handling */
2071 /* handle '\[\r]\n' */
2072 static int handle_stray_noerror(void)
2074 while (ch
== '\\') {
2079 } else if (ch
== '\r') {
2093 static void handle_stray(void)
2095 if (handle_stray_noerror())
2096 error("stray '\\' in program");
2099 /* skip the stray and handle the \\n case. Output an error if
2100 incorrect char after the stray */
2101 static int handle_stray1(uint8_t *p
)
2105 if (p
>= file
->buf_end
) {
2122 /* handle just the EOB case, but not stray */
2123 #define PEEKC_EOB(c, p)\
2134 /* handle the complicated stray case */
2135 #define PEEKC(c, p)\
2140 c = handle_stray1(p);\
2145 /* input with '\[\r]\n' handling. Note that this function cannot
2146 handle other characters after '\', so you cannot call it inside
2147 strings or comments */
2148 static void minp(void)
2156 /* single line C++ comments */
2157 static uint8_t *parse_line_comment(uint8_t *p
)
2165 if (c
== '\n' || c
== CH_EOF
) {
2167 } else if (c
== '\\') {
2176 } else if (c
== '\r') {
2194 static uint8_t *parse_comment(uint8_t *p
)
2200 /* fast skip loop */
2203 if (c
== '\n' || c
== '*' || c
== '\\')
2207 if (c
== '\n' || c
== '*' || c
== '\\')
2211 /* now we can handle all the cases */
2215 } else if (c
== '*') {
2221 } else if (c
== '/') {
2222 goto end_of_comment
;
2223 } else if (c
== '\\') {
2228 /* skip '\[\r]\n', otherwise just skip the stray */
2234 } else if (c
== '\r') {
2251 /* stray, eob or eof */
2256 error("unexpected end of file in comment");
2257 } else if (c
== '\\') {
2269 /* space exlcuding newline */
2270 static inline int is_space(int ch
)
2272 return ch
== ' ' || ch
== '\t' || ch
== '\v' || ch
== '\f' || ch
== '\r';
2275 static inline void skip_spaces(void)
2277 while (is_space(ch
))
2281 /* parse a string without interpreting escapes */
2282 static uint8_t *parse_pp_string(uint8_t *p
,
2283 int sep
, CString
*str
)
2291 } else if (c
== '\\') {
2296 unterminated_string
:
2297 /* XXX: indicate line number of start of string */
2298 error("missing terminating %c character", sep
);
2299 } else if (c
== '\\') {
2300 /* escape : just skip \[\r]\n */
2305 } else if (c
== '\r') {
2308 expect("'\n' after '\r'");
2311 } else if (c
== CH_EOF
) {
2312 goto unterminated_string
;
2315 cstr_ccat(str
, '\\');
2321 } else if (c
== '\n') {
2324 } else if (c
== '\r') {
2328 cstr_ccat(str
, '\r');
2344 /* skip block of text until #else, #elif or #endif. skip also pairs of
2346 void preprocess_skip(void)
2348 int a
, start_of_line
, c
, in_warn_or_error
;
2355 in_warn_or_error
= 0;
2376 } else if (c
== '\\') {
2377 ch
= file
->buf_ptr
[0];
2378 handle_stray_noerror();
2385 if (in_warn_or_error
)
2387 p
= parse_pp_string(p
, c
, NULL
);
2391 if (in_warn_or_error
)
2398 p
= parse_comment(p
);
2399 } else if (ch
== '/') {
2400 p
= parse_line_comment(p
);
2405 if (start_of_line
) {
2410 (tok
== TOK_ELSE
|| tok
== TOK_ELIF
|| tok
== TOK_ENDIF
))
2412 if (tok
== TOK_IF
|| tok
== TOK_IFDEF
|| tok
== TOK_IFNDEF
)
2414 else if (tok
== TOK_ENDIF
)
2416 else if( tok
== TOK_ERROR
|| tok
== TOK_WARNING
)
2417 in_warn_or_error
= 1;
2431 /* ParseState handling */
2433 /* XXX: currently, no include file info is stored. Thus, we cannot display
2434 accurate messages if the function or data definition spans multiple
2437 /* save current parse state in 's' */
2438 void save_parse_state(ParseState
*s
)
2440 s
->line_num
= file
->line_num
;
2441 s
->macro_ptr
= macro_ptr
;
2446 /* restore parse state from 's' */
2447 void restore_parse_state(ParseState
*s
)
2449 file
->line_num
= s
->line_num
;
2450 macro_ptr
= s
->macro_ptr
;
2455 /* return the number of additional 'ints' necessary to store the
2457 static inline int tok_ext_size(int t
)
2471 error("unsupported token");
2478 return LDOUBLE_SIZE
/ 4;
2484 /* token string handling */
2486 static inline void tok_str_new(TokenString
*s
)
2490 s
->allocated_len
= 0;
2491 s
->last_line_num
= -1;
2494 static void tok_str_free(int *str
)
2499 static int *tok_str_realloc(TokenString
*s
)
2503 if (s
->allocated_len
== 0) {
2506 len
= s
->allocated_len
* 2;
2508 str
= tcc_realloc(s
->str
, len
* sizeof(int));
2510 error("memory full");
2511 s
->allocated_len
= len
;
2516 static void tok_str_add(TokenString
*s
, int t
)
2522 if (len
>= s
->allocated_len
)
2523 str
= tok_str_realloc(s
);
2528 static void tok_str_add2(TokenString
*s
, int t
, CValue
*cv
)
2535 /* allocate space for worst case */
2536 if (len
+ TOK_MAX_SIZE
> s
->allocated_len
)
2537 str
= tok_str_realloc(s
);
2546 str
[len
++] = cv
->tab
[0];
2555 nb_words
= (sizeof(CString
) + cv
->cstr
->size
+ 3) >> 2;
2556 while ((len
+ nb_words
) > s
->allocated_len
)
2557 str
= tok_str_realloc(s
);
2558 cstr
= (CString
*)(str
+ len
);
2560 cstr
->size
= cv
->cstr
->size
;
2561 cstr
->data_allocated
= NULL
;
2562 cstr
->size_allocated
= cstr
->size
;
2563 memcpy((char *)cstr
+ sizeof(CString
),
2564 cv
->cstr
->data
, cstr
->size
);
2571 #if LDOUBLE_SIZE == 8
2574 str
[len
++] = cv
->tab
[0];
2575 str
[len
++] = cv
->tab
[1];
2577 #if LDOUBLE_SIZE == 12
2579 str
[len
++] = cv
->tab
[0];
2580 str
[len
++] = cv
->tab
[1];
2581 str
[len
++] = cv
->tab
[2];
2582 #elif LDOUBLE_SIZE == 16
2584 str
[len
++] = cv
->tab
[0];
2585 str
[len
++] = cv
->tab
[1];
2586 str
[len
++] = cv
->tab
[2];
2587 str
[len
++] = cv
->tab
[3];
2588 #elif LDOUBLE_SIZE != 8
2589 #error add long double size support
2598 /* add the current parse token in token string 's' */
2599 static void tok_str_add_tok(TokenString
*s
)
2603 /* save line number info */
2604 if (file
->line_num
!= s
->last_line_num
) {
2605 s
->last_line_num
= file
->line_num
;
2606 cval
.i
= s
->last_line_num
;
2607 tok_str_add2(s
, TOK_LINENUM
, &cval
);
2609 tok_str_add2(s
, tok
, &tokc
);
2612 #if LDOUBLE_SIZE == 16
2613 #define LDOUBLE_GET(p, cv) \
2618 #elif LDOUBLE_SIZE == 12
2619 #define LDOUBLE_GET(p, cv) \
2623 #elif LDOUBLE_SIZE == 8
2624 #define LDOUBLE_GET(p, cv) \
2628 #error add long double size support
2632 /* get a token from an integer array and increment pointer
2633 accordingly. we code it as a macro to avoid pointer aliasing. */
2634 #define TOK_GET(t, p, cv) \
2649 cv.cstr = (CString *)p; \
2650 cv.cstr->data = (char *)p + sizeof(CString);\
2651 p += (sizeof(CString) + cv.cstr->size + 3) >> 2;\
2660 case TOK_CLDOUBLE: \
2661 LDOUBLE_GET(p, cv); \
2662 p += LDOUBLE_SIZE / 4; \
2669 /* defines handling */
2670 static inline void define_push(int v
, int macro_type
, int *str
, Sym
*first_arg
)
2674 s
= sym_push2(&define_stack
, v
, macro_type
, (long)str
);
2675 s
->next
= first_arg
;
2676 table_ident
[v
- TOK_IDENT
]->sym_define
= s
;
2679 /* undefined a define symbol. Its name is just set to zero */
2680 static void define_undef(Sym
*s
)
2684 if (v
>= TOK_IDENT
&& v
< tok_ident
)
2685 table_ident
[v
- TOK_IDENT
]->sym_define
= NULL
;
2689 static inline Sym
*define_find(int v
)
2692 if ((unsigned)v
>= (unsigned)(tok_ident
- TOK_IDENT
))
2694 return table_ident
[v
]->sym_define
;
2697 /* free define stack until top reaches 'b' */
2698 static void free_defines(Sym
*b
)
2706 /* do not free args or predefined defines */
2708 tok_str_free((int *)top
->c
);
2710 if (v
>= TOK_IDENT
&& v
< tok_ident
)
2711 table_ident
[v
- TOK_IDENT
]->sym_define
= NULL
;
2719 static Sym
*label_find(int v
)
2722 if ((unsigned)v
>= (unsigned)(tok_ident
- TOK_IDENT
))
2724 return table_ident
[v
]->sym_label
;
2727 static Sym
*label_push(Sym
**ptop
, int v
, int flags
)
2730 s
= sym_push2(ptop
, v
, 0, 0);
2732 ps
= &table_ident
[v
- TOK_IDENT
]->sym_label
;
2733 if (ptop
== &global_label_stack
) {
2734 /* modify the top most local identifier, so that
2735 sym_identifier will point to 's' when popped */
2737 ps
= &(*ps
)->prev_tok
;
2744 /* pop labels until element last is reached. Look if any labels are
2745 undefined. Define symbols if '&&label' was used. */
2746 static void label_pop(Sym
**ptop
, Sym
*slast
)
2749 for(s
= *ptop
; s
!= slast
; s
= s1
) {
2751 if (s
->r
== LABEL_DECLARED
) {
2752 warning("label '%s' declared but not used", get_tok_str(s
->v
, NULL
));
2753 } else if (s
->r
== LABEL_FORWARD
) {
2754 error("label '%s' used but not defined",
2755 get_tok_str(s
->v
, NULL
));
2758 /* define corresponding symbol. A size of
2760 put_extern_sym(s
, cur_text_section
, (long)s
->next
, 1);
2764 table_ident
[s
->v
- TOK_IDENT
]->sym_label
= s
->prev_tok
;
2770 /* eval an expression for #if/#elif */
2771 static int expr_preprocess(void)
2777 while (tok
!= TOK_LINEFEED
&& tok
!= TOK_EOF
) {
2778 next(); /* do macro subst */
2779 if (tok
== TOK_DEFINED
) {
2784 c
= define_find(tok
) != 0;
2789 } else if (tok
>= TOK_IDENT
) {
2790 /* if undefined macro */
2794 tok_str_add_tok(&str
);
2796 tok_str_add(&str
, -1); /* simulate end of file */
2797 tok_str_add(&str
, 0);
2798 /* now evaluate C constant expression */
2799 macro_ptr
= str
.str
;
2803 tok_str_free(str
.str
);
2807 #if defined(PARSE_DEBUG) || defined(PP_DEBUG)
2808 static void tok_print(int *str
)
2814 TOK_GET(t
, str
, cval
);
2817 printf(" %s", get_tok_str(t
, &cval
));
2823 /* parse after #define */
2824 static void parse_define(void)
2826 Sym
*s
, *first
, **ps
;
2827 int v
, t
, varg
, is_vaargs
, c
;
2832 error("invalid macro name '%s'", get_tok_str(tok
, &tokc
));
2833 /* XXX: should check if same macro (ANSI) */
2836 /* '(' must be just after macro definition for MACRO_FUNC */
2837 c
= file
->buf_ptr
[0];
2839 c
= handle_stray1(file
->buf_ptr
);
2844 while (tok
!= ')') {
2848 if (varg
== TOK_DOTS
) {
2849 varg
= TOK___VA_ARGS__
;
2851 } else if (tok
== TOK_DOTS
&& gnu_ext
) {
2855 if (varg
< TOK_IDENT
)
2856 error("badly punctuated parameter list");
2857 s
= sym_push2(&define_stack
, varg
| SYM_FIELD
, is_vaargs
, 0);
2868 /* EOF testing necessary for '-D' handling */
2869 while (tok
!= TOK_LINEFEED
&& tok
!= TOK_EOF
) {
2870 tok_str_add2(&str
, tok
, &tokc
);
2873 tok_str_add(&str
, 0);
2875 printf("define %s %d: ", get_tok_str(v
, NULL
), t
);
2878 define_push(v
, t
, str
.str
, first
);
2881 static inline int hash_cached_include(int type
, const char *filename
)
2883 const unsigned char *s
;
2887 h
= TOK_HASH_FUNC(h
, type
);
2890 h
= TOK_HASH_FUNC(h
, *s
);
2893 h
&= (CACHED_INCLUDES_HASH_SIZE
- 1);
2897 /* XXX: use a token or a hash table to accelerate matching ? */
2898 static CachedInclude
*search_cached_include(TCCState
*s1
,
2899 int type
, const char *filename
)
2903 h
= hash_cached_include(type
, filename
);
2904 i
= s1
->cached_includes_hash
[h
];
2908 e
= s1
->cached_includes
[i
- 1];
2909 if (e
->type
== type
&& !strcmp(e
->filename
, filename
))
2916 static inline void add_cached_include(TCCState
*s1
, int type
,
2917 const char *filename
, int ifndef_macro
)
2922 if (search_cached_include(s1
, type
, filename
))
2925 printf("adding cached '%s' %s\n", filename
, get_tok_str(ifndef_macro
, NULL
));
2927 e
= tcc_malloc(sizeof(CachedInclude
) + strlen(filename
));
2931 strcpy(e
->filename
, filename
);
2932 e
->ifndef_macro
= ifndef_macro
;
2933 dynarray_add((void ***)&s1
->cached_includes
, &s1
->nb_cached_includes
, e
);
2934 /* add in hash table */
2935 h
= hash_cached_include(type
, filename
);
2936 e
->hash_next
= s1
->cached_includes_hash
[h
];
2937 s1
->cached_includes_hash
[h
] = s1
->nb_cached_includes
;
2940 static void pragma_parse(TCCState
*s1
)
2945 if (tok
== TOK_pack
) {
2948 #pragma pack(1) // set
2949 #pragma pack() // reset to default
2950 #pragma pack(push,1) // push & set
2951 #pragma pack(pop) // restore previous
2955 if (tok
== TOK_ASM_pop
) {
2957 if (s1
->pack_stack_ptr
<= s1
->pack_stack
) {
2959 error("out of pack stack");
2961 s1
->pack_stack_ptr
--;
2965 if (tok
== TOK_ASM_push
) {
2967 if (s1
->pack_stack_ptr
>= s1
->pack_stack
+ PACK_STACK_SIZE
- 1)
2969 s1
->pack_stack_ptr
++;
2972 if (tok
!= TOK_CINT
) {
2974 error("invalid pack pragma");
2977 if (val
< 1 || val
> 16 || (val
& (val
- 1)) != 0)
2981 *s1
->pack_stack_ptr
= val
;
2987 /* is_bof is true if first non space token at beginning of file */
2988 static void preprocess(int is_bof
)
2990 TCCState
*s1
= tcc_state
;
2991 int size
, i
, c
, n
, saved_parse_flags
;
2998 saved_parse_flags
= parse_flags
;
2999 parse_flags
= PARSE_FLAG_PREPROCESS
| PARSE_FLAG_TOK_NUM
|
3000 PARSE_FLAG_LINEFEED
;
3010 s
= define_find(tok
);
3011 /* undefine symbol by putting an invalid name */
3016 case TOK_INCLUDE_NEXT
:
3017 ch
= file
->buf_ptr
[0];
3018 /* XXX: incorrect if comments : use next_nomacro with a special mode */
3023 } else if (ch
== '\"') {
3028 while (ch
!= c
&& ch
!= '\n' && ch
!= CH_EOF
) {
3029 if ((q
- buf
) < sizeof(buf
) - 1)
3032 if (handle_stray_noerror() == 0)
3040 /* eat all spaces and comments after include */
3041 /* XXX: slightly incorrect */
3042 while (ch1
!= '\n' && ch1
!= CH_EOF
)
3046 /* computed #include : either we have only strings or
3047 we have anything enclosed in '<>' */
3050 if (tok
== TOK_STR
) {
3051 while (tok
!= TOK_LINEFEED
) {
3052 if (tok
!= TOK_STR
) {
3054 error("'#include' expects \"FILENAME\" or <FILENAME>");
3056 pstrcat(buf
, sizeof(buf
), (char *)tokc
.cstr
->data
);
3062 while (tok
!= TOK_LINEFEED
) {
3063 pstrcat(buf
, sizeof(buf
), get_tok_str(tok
, &tokc
));
3067 /* check syntax and remove '<>' */
3068 if (len
< 2 || buf
[0] != '<' || buf
[len
- 1] != '>')
3069 goto include_syntax
;
3070 memmove(buf
, buf
+ 1, len
- 2);
3071 buf
[len
- 2] = '\0';
3076 e
= search_cached_include(s1
, c
, buf
);
3077 if (e
&& define_find(e
->ifndef_macro
)) {
3078 /* no need to parse the include because the 'ifndef macro'
3081 printf("%s: skipping %s\n", file
->filename
, buf
);
3084 if (s1
->include_stack_ptr
>= s1
->include_stack
+ INCLUDE_STACK_SIZE
)
3085 error("#include recursion too deep");
3086 /* push current file in stack */
3087 /* XXX: fix current line init */
3088 *s1
->include_stack_ptr
++ = file
;
3090 /* first search in current dir if "header.h" */
3091 size
= tcc_basename(file
->filename
) - file
->filename
;
3092 if (size
> sizeof(buf1
) - 1)
3093 size
= sizeof(buf1
) - 1;
3094 memcpy(buf1
, file
->filename
, size
);
3096 pstrcat(buf1
, sizeof(buf1
), buf
);
3097 f
= tcc_open(s1
, buf1
);
3099 if (tok
== TOK_INCLUDE_NEXT
)
3105 /* now search in all the include paths */
3106 n
= s1
->nb_include_paths
+ s1
->nb_sysinclude_paths
;
3107 for(i
= 0; i
< n
; i
++) {
3109 if (i
< s1
->nb_include_paths
)
3110 path
= s1
->include_paths
[i
];
3112 path
= s1
->sysinclude_paths
[i
- s1
->nb_include_paths
];
3113 pstrcpy(buf1
, sizeof(buf1
), path
);
3114 pstrcat(buf1
, sizeof(buf1
), "/");
3115 pstrcat(buf1
, sizeof(buf1
), buf
);
3116 f
= tcc_open(s1
, buf1
);
3118 if (tok
== TOK_INCLUDE_NEXT
)
3124 --s1
->include_stack_ptr
;
3125 error("include file '%s' not found", buf
);
3129 printf("%s: including %s\n", file
->filename
, buf1
);
3132 pstrcpy(f
->inc_filename
, sizeof(f
->inc_filename
), buf
);
3134 /* add include file debug info */
3136 put_stabs(file
->filename
, N_BINCL
, 0, 0, 0);
3138 tok_flags
|= TOK_FLAG_BOF
| TOK_FLAG_BOL
;
3139 ch
= file
->buf_ptr
[0];
3147 c
= expr_preprocess();
3153 if (tok
< TOK_IDENT
)
3154 error("invalid argument for '#if%sdef'", c
? "n" : "");
3158 printf("#ifndef %s\n", get_tok_str(tok
, NULL
));
3160 file
->ifndef_macro
= tok
;
3163 c
= (define_find(tok
) != 0) ^ c
;
3165 if (s1
->ifdef_stack_ptr
>= s1
->ifdef_stack
+ IFDEF_STACK_SIZE
)
3166 error("memory full");
3167 *s1
->ifdef_stack_ptr
++ = c
;
3170 if (s1
->ifdef_stack_ptr
== s1
->ifdef_stack
)
3171 error("#else without matching #if");
3172 if (s1
->ifdef_stack_ptr
[-1] & 2)
3173 error("#else after #else");
3174 c
= (s1
->ifdef_stack_ptr
[-1] ^= 3);
3177 if (s1
->ifdef_stack_ptr
== s1
->ifdef_stack
)
3178 error("#elif without matching #if");
3179 c
= s1
->ifdef_stack_ptr
[-1];
3181 error("#elif after #else");
3182 /* last #if/#elif expression was true: we skip */
3185 c
= expr_preprocess();
3186 s1
->ifdef_stack_ptr
[-1] = c
;
3196 if (s1
->ifdef_stack_ptr
<= file
->ifdef_stack_ptr
)
3197 error("#endif without matching #if");
3198 s1
->ifdef_stack_ptr
--;
3199 /* '#ifndef macro' was at the start of file. Now we check if
3200 an '#endif' is exactly at the end of file */
3201 if (file
->ifndef_macro
&&
3202 s1
->ifdef_stack_ptr
== file
->ifdef_stack_ptr
) {
3203 file
->ifndef_macro_saved
= file
->ifndef_macro
;
3204 /* need to set to zero to avoid false matches if another
3205 #ifndef at middle of file */
3206 file
->ifndef_macro
= 0;
3207 while (tok
!= TOK_LINEFEED
)
3209 tok_flags
|= TOK_FLAG_ENDIF
;
3215 if (tok
!= TOK_CINT
)
3217 file
->line_num
= tokc
.i
- 1; /* the line number will be incremented after */
3219 if (tok
!= TOK_LINEFEED
) {
3222 pstrcpy(file
->filename
, sizeof(file
->filename
),
3223 (char *)tokc
.cstr
->data
);
3229 ch
= file
->buf_ptr
[0];
3232 while (ch
!= '\n' && ch
!= CH_EOF
) {
3233 if ((q
- buf
) < sizeof(buf
) - 1)
3236 if (handle_stray_noerror() == 0)
3243 error("#error %s", buf
);
3245 warning("#warning %s", buf
);
3251 if (tok
== TOK_LINEFEED
|| tok
== '!' || tok
== TOK_CINT
) {
3252 /* '!' is ignored to allow C scripts. numbers are ignored
3253 to emulate cpp behaviour */
3255 if (!(saved_parse_flags
& PARSE_FLAG_ASM_COMMENTS
))
3256 warning("Ignoring unknown preprocessing directive #%s", get_tok_str(tok
, &tokc
));
3260 /* ignore other preprocess commands or #! for C scripts */
3261 while (tok
!= TOK_LINEFEED
)
3264 parse_flags
= saved_parse_flags
;
3267 /* evaluate escape codes in a string. */
3268 static void parse_escape_string(CString
*outstr
, const uint8_t *buf
, int is_long
)
3283 case '0': case '1': case '2': case '3':
3284 case '4': case '5': case '6': case '7':
3285 /* at most three octal digits */
3290 n
= n
* 8 + c
- '0';
3294 n
= n
* 8 + c
- '0';
3299 goto add_char_nonext
;
3307 if (c
>= 'a' && c
<= 'f')
3309 else if (c
>= 'A' && c
<= 'F')
3319 goto add_char_nonext
;
3343 goto invalid_escape
;
3353 if (c
>= '!' && c
<= '~')
3354 warning("unknown escape sequence: \'\\%c\'", c
);
3356 warning("unknown escape sequence: \'\\x%x\'", c
);
3363 cstr_ccat(outstr
, c
);
3365 cstr_wccat(outstr
, c
);
3367 /* add a trailing '\0' */
3369 cstr_ccat(outstr
, '\0');
3371 cstr_wccat(outstr
, '\0');
3374 /* we use 64 bit numbers */
3377 /* bn = (bn << shift) | or_val */
3378 void bn_lshift(unsigned int *bn
, int shift
, int or_val
)
3382 for(i
=0;i
<BN_SIZE
;i
++) {
3384 bn
[i
] = (v
<< shift
) | or_val
;
3385 or_val
= v
>> (32 - shift
);
3389 void bn_zero(unsigned int *bn
)
3392 for(i
=0;i
<BN_SIZE
;i
++) {
3397 /* parse number in null terminated string 'p' and return it in the
3399 void parse_number(const char *p
)
3401 int b
, t
, shift
, frac_bits
, s
, exp_val
, ch
;
3403 unsigned int bn
[BN_SIZE
];
3414 goto float_frac_parse
;
3415 } else if (t
== '0') {
3416 if (ch
== 'x' || ch
== 'X') {
3420 } else if (tcc_ext
&& (ch
== 'b' || ch
== 'B')) {
3426 /* parse all digits. cannot check octal numbers at this stage
3427 because of floating point constants */
3429 if (ch
>= 'a' && ch
<= 'f')
3431 else if (ch
>= 'A' && ch
<= 'F')
3439 if (q
>= token_buf
+ STRING_MAX_SIZE
) {
3441 error("number too long");
3447 ((ch
== 'e' || ch
== 'E') && b
== 10) ||
3448 ((ch
== 'p' || ch
== 'P') && (b
== 16 || b
== 2))) {
3450 /* NOTE: strtox should support that for hexa numbers, but
3451 non ISOC99 libcs do not support it, so we prefer to do
3453 /* hexadecimal or binary floats */
3454 /* XXX: handle overflows */
3466 } else if (t
>= 'a') {
3468 } else if (t
>= 'A') {
3473 bn_lshift(bn
, shift
, t
);
3480 if (t
>= 'a' && t
<= 'f') {
3482 } else if (t
>= 'A' && t
<= 'F') {
3484 } else if (t
>= '0' && t
<= '9') {
3490 error("invalid digit");
3491 bn_lshift(bn
, shift
, t
);
3496 if (ch
!= 'p' && ch
!= 'P')
3503 } else if (ch
== '-') {
3507 if (ch
< '0' || ch
> '9')
3508 expect("exponent digits");
3509 while (ch
>= '0' && ch
<= '9') {
3510 exp_val
= exp_val
* 10 + ch
- '0';
3513 exp_val
= exp_val
* s
;
3515 /* now we can generate the number */
3516 /* XXX: should patch directly float number */
3517 d
= (double)bn
[1] * 4294967296.0 + (double)bn
[0];
3518 d
= ldexp(d
, exp_val
- frac_bits
);
3523 /* float : should handle overflow */
3525 } else if (t
== 'L') {
3528 /* XXX: not large enough */
3529 tokc
.ld
= (long double)d
;
3535 /* decimal floats */
3537 if (q
>= token_buf
+ STRING_MAX_SIZE
)
3542 while (ch
>= '0' && ch
<= '9') {
3543 if (q
>= token_buf
+ STRING_MAX_SIZE
)
3549 if (ch
== 'e' || ch
== 'E') {
3550 if (q
>= token_buf
+ STRING_MAX_SIZE
)
3554 if (ch
== '-' || ch
== '+') {
3555 if (q
>= token_buf
+ STRING_MAX_SIZE
)
3560 if (ch
< '0' || ch
> '9')
3561 expect("exponent digits");
3562 while (ch
>= '0' && ch
<= '9') {
3563 if (q
>= token_buf
+ STRING_MAX_SIZE
)
3575 tokc
.f
= strtof(token_buf
, NULL
);
3576 } else if (t
== 'L') {
3579 tokc
.ld
= strtold(token_buf
, NULL
);
3582 tokc
.d
= strtod(token_buf
, NULL
);
3586 unsigned long long n
, n1
;
3589 /* integer number */
3592 if (b
== 10 && *q
== '0') {
3599 /* no need for checks except for base 10 / 8 errors */
3602 } else if (t
>= 'a') {
3604 } else if (t
>= 'A') {
3609 error("invalid digit");
3613 /* detect overflow */
3614 /* XXX: this test is not reliable */
3616 error("integer constant overflow");
3619 /* XXX: not exactly ANSI compliant */
3620 if ((n
& 0xffffffff00000000LL
) != 0) {
3625 } else if (n
> 0x7fffffff) {
3636 error("three 'l's in integer constant");
3639 if (tok
== TOK_CINT
)
3641 else if (tok
== TOK_CUINT
)
3645 } else if (t
== 'U') {
3647 error("two 'u's in integer constant");
3649 if (tok
== TOK_CINT
)
3651 else if (tok
== TOK_CLLONG
)
3658 if (tok
== TOK_CINT
|| tok
== TOK_CUINT
)
3664 error("invalid number\n");
3668 #define PARSE2(c1, tok1, c2, tok2) \
3679 /* return next token without macro substitution */
3680 static inline void next_nomacro1(void)
3687 cstr_reset(&tok_spaces
);
3697 cstr_ccat(&tok_spaces
, c
);
3702 /* first look if it is in fact an end of buffer */
3703 if (p
>= file
->buf_end
) {
3707 if (p
>= file
->buf_end
)
3720 TCCState
*s1
= tcc_state
;
3721 if ((parse_flags
& PARSE_FLAG_LINEFEED
)
3722 && !(tok_flags
& TOK_FLAG_EOF
)) {
3723 tok_flags
|= TOK_FLAG_EOF
;
3725 goto keep_tok_flags
;
3726 } else if (s1
->include_stack_ptr
== s1
->include_stack
||
3727 !(parse_flags
& PARSE_FLAG_PREPROCESS
)) {
3728 /* no include left : end of file. */
3731 tok_flags
&= ~TOK_FLAG_EOF
;
3732 /* pop include file */
3734 /* test if previous '#endif' was after a #ifdef at
3736 if (tok_flags
& TOK_FLAG_ENDIF
) {
3738 printf("#endif %s\n", get_tok_str(file
->ifndef_macro_saved
, NULL
));
3740 add_cached_include(s1
, file
->inc_type
, file
->inc_filename
,
3741 file
->ifndef_macro_saved
);
3744 /* add end of include file debug info */
3746 put_stabd(N_EINCL
, 0, 0);
3748 /* pop include stack */
3750 s1
->include_stack_ptr
--;
3751 file
= *s1
->include_stack_ptr
;
3760 tok_flags
|= TOK_FLAG_BOL
;
3762 if (0 == (parse_flags
& PARSE_FLAG_LINEFEED
))
3765 goto keep_tok_flags
;
3770 if ((tok_flags
& TOK_FLAG_BOL
) &&
3771 (parse_flags
& PARSE_FLAG_PREPROCESS
)) {
3773 preprocess(tok_flags
& TOK_FLAG_BOF
);
3779 tok
= TOK_TWOSHARPS
;
3781 if (parse_flags
& PARSE_FLAG_ASM_COMMENTS
) {
3782 p
= parse_line_comment(p
- 1);
3791 case 'a': case 'b': case 'c': case 'd':
3792 case 'e': case 'f': case 'g': case 'h':
3793 case 'i': case 'j': case 'k': case 'l':
3794 case 'm': case 'n': case 'o': case 'p':
3795 case 'q': case 'r': case 's': case 't':
3796 case 'u': case 'v': case 'w': case 'x':
3798 case 'A': case 'B': case 'C': case 'D':
3799 case 'E': case 'F': case 'G': case 'H':
3800 case 'I': case 'J': case 'K':
3801 case 'M': case 'N': case 'O': case 'P':
3802 case 'Q': case 'R': case 'S': case 'T':
3803 case 'U': case 'V': case 'W': case 'X':
3809 h
= TOK_HASH_FUNC(h
, c
);
3813 if (!isidnum_table
[c
-CH_EOF
])
3815 h
= TOK_HASH_FUNC(h
, c
);
3822 /* fast case : no stray found, so we have the full token
3823 and we have already hashed it */
3825 h
&= (TOK_HASH_SIZE
- 1);
3826 pts
= &hash_ident
[h
];
3831 if (ts
->len
== len
&& !memcmp(ts
->str
, p1
, len
))
3833 pts
= &(ts
->hash_next
);
3835 ts
= tok_alloc_new(pts
, p1
, len
);
3839 cstr_reset(&tokcstr
);
3842 cstr_ccat(&tokcstr
, *p1
);
3848 while (isidnum_table
[c
-CH_EOF
]) {
3849 cstr_ccat(&tokcstr
, c
);
3852 ts
= tok_alloc(tokcstr
.data
, tokcstr
.size
);
3858 if (t
!= '\\' && t
!= '\'' && t
!= '\"') {
3860 goto parse_ident_fast
;
3863 if (c
== '\'' || c
== '\"') {
3867 cstr_reset(&tokcstr
);
3868 cstr_ccat(&tokcstr
, 'L');
3869 goto parse_ident_slow
;
3873 case '0': case '1': case '2': case '3':
3874 case '4': case '5': case '6': case '7':
3877 cstr_reset(&tokcstr
);
3878 /* after the first digit, accept digits, alpha, '.' or sign if
3879 prefixed by 'eEpP' */
3883 cstr_ccat(&tokcstr
, c
);
3885 if (!(isnum(c
) || isid(c
) || c
== '.' ||
3886 ((c
== '+' || c
== '-') &&
3887 (t
== 'e' || t
== 'E' || t
== 'p' || t
== 'P'))))
3890 /* We add a trailing '\0' to ease parsing */
3891 cstr_ccat(&tokcstr
, '\0');
3892 tokc
.cstr
= &tokcstr
;
3896 /* special dot handling because it can also start a number */
3899 cstr_reset(&tokcstr
);
3900 cstr_ccat(&tokcstr
, '.');
3902 } else if (c
== '.') {
3922 /* parse the string */
3924 p
= parse_pp_string(p
, sep
, &str
);
3925 cstr_ccat(&str
, '\0');
3927 /* eval the escape (should be done as TOK_PPNUM) */
3928 cstr_reset(&tokcstr
);
3929 parse_escape_string(&tokcstr
, str
.data
, is_long
);
3934 /* XXX: make it portable */
3938 char_size
= sizeof(nwchar_t
);
3939 if (tokcstr
.size
<= char_size
)
3940 error("empty character constant");
3941 if (tokcstr
.size
> 2 * char_size
)
3942 warning("multi-character character constant");
3944 tokc
.i
= *(int8_t *)tokcstr
.data
;
3947 tokc
.i
= *(nwchar_t
*)tokcstr
.data
;
3951 tokc
.cstr
= &tokcstr
;
3965 } else if (c
== '<') {
3983 } else if (c
== '>') {
4001 } else if (c
== '=') {
4014 } else if (c
== '=') {
4027 } else if (c
== '=') {
4040 } else if (c
== '=') {
4043 } else if (c
== '>') {
4051 PARSE2('!', '!', '=', TOK_NE
)
4052 PARSE2('=', '=', '=', TOK_EQ
)
4053 PARSE2('*', '*', '=', TOK_A_MUL
)
4054 PARSE2('%', '%', '=', TOK_A_MOD
)
4055 PARSE2('^', '^', '=', TOK_A_XOR
)
4057 /* comments or operator */
4061 p
= parse_comment(p
);
4063 } else if (c
== '/') {
4064 p
= parse_line_comment(p
);
4066 } else if (c
== '=') {
4086 case '$': /* only used in assembler */
4087 case '@': /* dito */
4092 error("unrecognized character \\x%02x", c
);
4098 #if defined(PARSE_DEBUG)
4099 printf("token = %s\n", get_tok_str(tok
, &tokc
));
4103 /* return next token without macro substitution. Can read input from
4105 static void next_nomacro(void)
4111 TOK_GET(tok
, macro_ptr
, tokc
);
4112 if (tok
== TOK_LINENUM
) {
4113 file
->line_num
= tokc
.i
;
4122 /* substitute args in macro_str and return allocated string */
4123 static int *macro_arg_subst(Sym
**nested_list
, int *macro_str
, Sym
*args
)
4125 int *st
, last_tok
, t
, notfirst
;
4134 TOK_GET(t
, macro_str
, cval
);
4139 TOK_GET(t
, macro_str
, cval
);
4142 s
= sym_find2(args
, t
);
4149 cstr_ccat(&cstr
, ' ');
4150 TOK_GET(t
, st
, cval
);
4151 cstr_cat(&cstr
, get_tok_str(t
, &cval
));
4156 cstr_ccat(&cstr
, '\0');
4158 printf("stringize: %s\n", (char *)cstr
.data
);
4162 tok_str_add2(&str
, TOK_STR
, &cval
);
4165 tok_str_add2(&str
, t
, &cval
);
4167 } else if (t
>= TOK_IDENT
) {
4168 s
= sym_find2(args
, t
);
4171 /* if '##' is present before or after, no arg substitution */
4172 if (*macro_str
== TOK_TWOSHARPS
|| last_tok
== TOK_TWOSHARPS
) {
4173 /* special case for var arg macros : ## eats the
4174 ',' if empty VA_ARGS variable. */
4175 /* XXX: test of the ',' is not 100%
4176 reliable. should fix it to avoid security
4178 if (gnu_ext
&& s
->type
.t
&&
4179 last_tok
== TOK_TWOSHARPS
&&
4180 str
.len
>= 2 && str
.str
[str
.len
- 2] == ',') {
4182 /* suppress ',' '##' */
4185 /* suppress '##' and add variable */
4193 TOK_GET(t1
, st
, cval
);
4196 tok_str_add2(&str
, t1
, &cval
);
4200 /* NOTE: the stream cannot be read when macro
4201 substituing an argument */
4202 macro_subst(&str
, nested_list
, st
, NULL
);
4205 tok_str_add(&str
, t
);
4208 tok_str_add2(&str
, t
, &cval
);
4212 tok_str_add(&str
, 0);
4216 static char const ab_month_name
[12][4] =
4218 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
4219 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
4222 /* do macro substitution of current token with macro 's' and add
4223 result to (tok_str,tok_len). 'nested_list' is the list of all
4224 macros we got inside to avoid recursing. Return non zero if no
4225 substitution needs to be done */
4226 static int macro_subst_tok(TokenString
*tok_str
,
4227 Sym
**nested_list
, Sym
*s
, struct macro_level
**can_read_stream
)
4229 Sym
*args
, *sa
, *sa1
;
4230 int mstr_allocated
, parlevel
, *mstr
, t
, t1
;
4237 /* if symbol is a macro, prepare substitution */
4238 /* special macros */
4239 if (tok
== TOK___LINE__
) {
4240 snprintf(buf
, sizeof(buf
), "%d", file
->line_num
);
4244 } else if (tok
== TOK___FILE__
) {
4245 cstrval
= file
->filename
;
4247 } else if (tok
== TOK___DATE__
|| tok
== TOK___TIME__
) {
4252 tm
= localtime(&ti
);
4253 if (tok
== TOK___DATE__
) {
4254 snprintf(buf
, sizeof(buf
), "%s %2d %d",
4255 ab_month_name
[tm
->tm_mon
], tm
->tm_mday
, tm
->tm_year
+ 1900);
4257 snprintf(buf
, sizeof(buf
), "%02d:%02d:%02d",
4258 tm
->tm_hour
, tm
->tm_min
, tm
->tm_sec
);
4265 cstr_cat(&cstr
, cstrval
);
4266 cstr_ccat(&cstr
, '\0');
4268 tok_str_add2(tok_str
, t1
, &cval
);
4273 if (s
->type
.t
== MACRO_FUNC
) {
4274 /* NOTE: we do not use next_nomacro to avoid eating the
4275 next token. XXX: find better solution */
4279 if (t
== 0 && can_read_stream
) {
4280 /* end of macro stream: we must look at the token
4281 after in the file */
4282 struct macro_level
*ml
= *can_read_stream
;
4288 *can_read_stream
= ml
-> prev
;
4293 /* XXX: incorrect with comments */
4294 ch
= file
->buf_ptr
[0];
4295 while (is_space(ch
) || ch
== '\n')
4299 if (t
!= '(') /* no macro subst */
4302 /* argument macro */
4307 /* NOTE: empty args are allowed, except if no args */
4309 /* handle '()' case */
4310 if (!args
&& !sa
&& tok
== ')')
4313 error("macro '%s' used with too many args",
4314 get_tok_str(s
->v
, 0));
4317 /* NOTE: non zero sa->t indicates VA_ARGS */
4318 while ((parlevel
> 0 ||
4320 (tok
!= ',' || sa
->type
.t
))) &&
4324 else if (tok
== ')')
4326 if (tok
!= TOK_LINEFEED
)
4327 tok_str_add2(&str
, tok
, &tokc
);
4330 tok_str_add(&str
, 0);
4331 sym_push2(&args
, sa
->v
& ~SYM_FIELD
, sa
->type
.t
, (long)str
.str
);
4334 /* special case for gcc var args: add an empty
4335 var arg argument if it is omitted */
4336 if (sa
&& sa
->type
.t
&& gnu_ext
)
4346 error("macro '%s' used with too few args",
4347 get_tok_str(s
->v
, 0));
4350 /* now subst each arg */
4351 mstr
= macro_arg_subst(nested_list
, mstr
, args
);
4356 tok_str_free((int *)sa
->c
);
4362 sym_push2(nested_list
, s
->v
, 0, 0);
4363 macro_subst(tok_str
, nested_list
, mstr
, can_read_stream
);
4364 /* pop nested defined symbol */
4366 *nested_list
= sa1
->prev
;
4374 /* handle the '##' operator. Return NULL if no '##' seen. Otherwise
4375 return the resulting string (which must be freed). */
4376 static inline int *macro_twosharps(const int *macro_str
)
4379 const int *macro_ptr1
, *start_macro_ptr
, *ptr
, *saved_macro_ptr
;
4381 const char *p1
, *p2
;
4383 TokenString macro_str1
;
4386 start_macro_ptr
= macro_str
;
4387 /* we search the first '##' */
4389 macro_ptr1
= macro_str
;
4390 TOK_GET(t
, macro_str
, cval
);
4391 /* nothing more to do if end of string */
4394 if (*macro_str
== TOK_TWOSHARPS
)
4398 /* we saw '##', so we need more processing to handle it */
4400 tok_str_new(¯o_str1
);
4404 /* add all tokens seen so far */
4405 for(ptr
= start_macro_ptr
; ptr
< macro_ptr1
;) {
4406 TOK_GET(t
, ptr
, cval
);
4407 tok_str_add2(¯o_str1
, t
, &cval
);
4409 saved_macro_ptr
= macro_ptr
;
4410 /* XXX: get rid of the use of macro_ptr here */
4411 macro_ptr
= (int *)macro_str
;
4413 while (*macro_ptr
== TOK_TWOSHARPS
) {
4415 macro_ptr1
= macro_ptr
;
4418 TOK_GET(t
, macro_ptr
, cval
);
4419 /* We concatenate the two tokens if we have an
4420 identifier or a preprocessing number */
4422 p1
= get_tok_str(tok
, &tokc
);
4423 cstr_cat(&cstr
, p1
);
4424 p2
= get_tok_str(t
, &cval
);
4425 cstr_cat(&cstr
, p2
);
4426 cstr_ccat(&cstr
, '\0');
4428 if ((tok
>= TOK_IDENT
|| tok
== TOK_PPNUM
) &&
4429 (t
>= TOK_IDENT
|| t
== TOK_PPNUM
)) {
4430 if (tok
== TOK_PPNUM
) {
4431 /* if number, then create a number token */
4432 /* NOTE: no need to allocate because
4433 tok_str_add2() does it */
4434 cstr_reset(&tokcstr
);
4437 tokc
.cstr
= &tokcstr
;
4439 /* if identifier, we must do a test to
4440 validate we have a correct identifier */
4441 if (t
== TOK_PPNUM
) {
4451 if (!isnum(c
) && !isid(c
))
4455 ts
= tok_alloc(cstr
.data
, strlen(cstr
.data
));
4456 tok
= ts
->tok
; /* modify current token */
4459 const char *str
= cstr
.data
;
4460 const unsigned char *q
;
4462 /* we look for a valid token */
4463 /* XXX: do more extensive checks */
4464 if (!strcmp(str
, ">>=")) {
4466 } else if (!strcmp(str
, "<<=")) {
4468 } else if (strlen(str
) == 2) {
4469 /* search in two bytes table */
4474 if (q
[0] == str
[0] && q
[1] == str
[1])
4481 /* NOTE: because get_tok_str use a static buffer,
4484 p1
= get_tok_str(tok
, &tokc
);
4485 cstr_cat(&cstr
, p1
);
4486 cstr_ccat(&cstr
, '\0');
4487 p2
= get_tok_str(t
, &cval
);
4488 warning("pasting \"%s\" and \"%s\" does not give a valid preprocessing token", cstr
.data
, p2
);
4489 /* cannot merge tokens: just add them separately */
4490 tok_str_add2(¯o_str1
, tok
, &tokc
);
4491 /* XXX: free associated memory ? */
4498 tok_str_add2(¯o_str1
, tok
, &tokc
);
4503 macro_ptr
= (int *)saved_macro_ptr
;
4505 tok_str_add(¯o_str1
, 0);
4506 return macro_str1
.str
;
4510 /* do macro substitution of macro_str and add result to
4511 (tok_str,tok_len). 'nested_list' is the list of all macros we got
4512 inside to avoid recursing. */
4513 static void macro_subst(TokenString
*tok_str
, Sym
**nested_list
,
4514 const int *macro_str
, struct macro_level
** can_read_stream
)
4521 struct macro_level ml
;
4523 /* first scan for '##' operator handling */
4525 macro_str1
= macro_twosharps(ptr
);
4529 /* NOTE: ptr == NULL can only happen if tokens are read from
4530 file stream due to a macro function call */
4533 TOK_GET(t
, ptr
, cval
);
4538 /* if nested substitution, do nothing */
4539 if (sym_find2(*nested_list
, t
))
4542 if (can_read_stream
)
4543 ml
.prev
= *can_read_stream
, *can_read_stream
= &ml
;
4544 macro_ptr
= (int *)ptr
;
4546 ret
= macro_subst_tok(tok_str
, nested_list
, s
, can_read_stream
);
4547 ptr
= (int *)macro_ptr
;
4549 if (can_read_stream
&& *can_read_stream
== &ml
)
4550 *can_read_stream
= ml
.prev
;
4555 tok_str_add2(tok_str
, t
, &cval
);
4559 tok_str_free(macro_str1
);
4562 /* return next token with macro substitution */
4563 static void next(void)
4565 Sym
*nested_list
, *s
;
4567 struct macro_level
*ml
;
4572 /* if not reading from macro substituted string, then try
4573 to substitute macros */
4574 if (tok
>= TOK_IDENT
&&
4575 (parse_flags
& PARSE_FLAG_PREPROCESS
)) {
4576 s
= define_find(tok
);
4578 /* we have a macro: we try to substitute */
4582 if (macro_subst_tok(&str
, &nested_list
, s
, &ml
) == 0) {
4583 /* substitution done, NOTE: maybe empty */
4584 tok_str_add(&str
, 0);
4585 macro_ptr
= str
.str
;
4586 macro_ptr_allocated
= str
.str
;
4593 /* end of macro or end of unget buffer */
4594 if (unget_buffer_enabled
) {
4595 macro_ptr
= unget_saved_macro_ptr
;
4596 unget_buffer_enabled
= 0;
4598 /* end of macro string: free it */
4599 tok_str_free(macro_ptr_allocated
);
4606 /* convert preprocessor tokens into C tokens */
4607 if (tok
== TOK_PPNUM
&&
4608 (parse_flags
& PARSE_FLAG_TOK_NUM
)) {
4609 parse_number((char *)tokc
.cstr
->data
);
4613 /* push back current token and set current token to 'last_tok'. Only
4614 identifier case handled for labels. */
4615 static inline void unget_tok(int last_tok
)
4619 unget_saved_macro_ptr
= macro_ptr
;
4620 unget_buffer_enabled
= 1;
4621 q
= unget_saved_buffer
;
4624 n
= tok_ext_size(tok
) - 1;
4627 *q
= 0; /* end of token string */
4632 void swap(int *p
, int *q
)
4640 void vsetc(CType
*type
, int r
, CValue
*vc
)
4644 if (vtop
>= vstack
+ (VSTACK_SIZE
- 1))
4645 error("memory full");
4646 /* cannot let cpu flags if other instruction are generated. Also
4647 avoid leaving VT_JMP anywhere except on the top of the stack
4648 because it would complicate the code generator. */
4649 if (vtop
>= vstack
) {
4650 v
= vtop
->r
& VT_VALMASK
;
4651 if (v
== VT_CMP
|| (v
& ~1) == VT_JMP
)
4657 vtop
->r2
= VT_CONST
;
4661 /* push integer constant */
4666 vsetc(&int_type
, VT_CONST
, &cval
);
4669 /* push long long constant */
4670 void vpushll(long long v
)
4676 vsetc(&ctype
, VT_CONST
, &cval
);
4679 /* Return a static symbol pointing to a section */
4680 static Sym
*get_sym_ref(CType
*type
, Section
*sec
,
4681 unsigned long offset
, unsigned long size
)
4687 sym
= global_identifier_push(v
, type
->t
| VT_STATIC
, 0);
4688 sym
->type
.ref
= type
->ref
;
4689 sym
->r
= VT_CONST
| VT_SYM
;
4690 put_extern_sym(sym
, sec
, offset
, size
);
4694 /* push a reference to a section offset by adding a dummy symbol */
4695 static void vpush_ref(CType
*type
, Section
*sec
, unsigned long offset
, unsigned long size
)
4700 vsetc(type
, VT_CONST
| VT_SYM
, &cval
);
4701 vtop
->sym
= get_sym_ref(type
, sec
, offset
, size
);
4704 /* define a new external reference to a symbol 'v' of type 'u' */
4705 static Sym
*external_global_sym(int v
, CType
*type
, int r
)
4711 /* push forward reference */
4712 s
= global_identifier_push(v
, type
->t
| VT_EXTERN
, 0);
4713 s
->type
.ref
= type
->ref
;
4714 s
->r
= r
| VT_CONST
| VT_SYM
;
4719 /* define a new external reference to a symbol 'v' of type 'u' */
4720 static Sym
*external_sym(int v
, CType
*type
, int r
)
4726 /* push forward reference */
4727 s
= sym_push(v
, type
, r
| VT_CONST
| VT_SYM
, 0);
4728 s
->type
.t
|= VT_EXTERN
;
4730 if (!is_compatible_types(&s
->type
, type
))
4731 error("incompatible types for redefinition of '%s'",
4732 get_tok_str(v
, NULL
));
4737 /* push a reference to global symbol v */
4738 static void vpush_global_sym(CType
*type
, int v
)
4743 sym
= external_global_sym(v
, type
, 0);
4745 vsetc(type
, VT_CONST
| VT_SYM
, &cval
);
4749 void vset(CType
*type
, int r
, int v
)
4754 vsetc(type
, r
, &cval
);
4757 void vseti(int r
, int v
)
4773 void vpushv(SValue
*v
)
4775 if (vtop
>= vstack
+ (VSTACK_SIZE
- 1))
4776 error("memory full");
4786 /* save r to the memory stack, and mark it as being free */
4787 void save_reg(int r
)
4789 int l
, saved
, size
, align
;
4793 /* modify all stack values */
4796 for(p
=vstack
;p
<=vtop
;p
++) {
4797 if ((p
->r
& VT_VALMASK
) == r
||
4798 ((p
->type
.t
& VT_BTYPE
) == VT_LLONG
&& (p
->r2
& VT_VALMASK
) == r
)) {
4799 /* must save value on stack if not already done */
4801 /* NOTE: must reload 'r' because r might be equal to r2 */
4802 r
= p
->r
& VT_VALMASK
;
4803 /* store register in the stack */
4805 #ifndef TCC_TARGET_X86_64
4806 if ((p
->r
& VT_LVAL
) ||
4807 (!is_float(type
->t
) && (type
->t
& VT_BTYPE
) != VT_LLONG
))
4811 type
= &char_pointer_type
;
4813 size
= type_size(type
, &align
);
4814 loc
= (loc
- size
) & -align
;
4815 sv
.type
.t
= type
->t
;
4816 sv
.r
= VT_LOCAL
| VT_LVAL
;
4819 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
4820 /* x86 specific: need to pop fp register ST0 if saved */
4821 if (r
== TREG_ST0
) {
4822 o(0xd9dd); /* fstp %st(1) */
4825 #ifndef TCC_TARGET_X86_64
4826 /* special long long case */
4827 if ((type
->t
& VT_BTYPE
) == VT_LLONG
) {
4835 /* mark that stack entry as being saved on the stack */
4836 if (p
->r
& VT_LVAL
) {
4837 /* also clear the bounded flag because the
4838 relocation address of the function was stored in
4840 p
->r
= (p
->r
& ~(VT_VALMASK
| VT_BOUNDED
)) | VT_LLOCAL
;
4842 p
->r
= lvalue_type(p
->type
.t
) | VT_LOCAL
;
4850 /* find a register of class 'rc2' with at most one reference on stack.
4851 * If none, call get_reg(rc) */
4852 int get_reg_ex(int rc
, int rc2
)
4857 for(r
=0;r
<NB_REGS
;r
++) {
4858 if (reg_classes
[r
] & rc2
) {
4861 for(p
= vstack
; p
<= vtop
; p
++) {
4862 if ((p
->r
& VT_VALMASK
) == r
||
4863 (p
->r2
& VT_VALMASK
) == r
)
4873 /* find a free register of class 'rc'. If none, save one register */
4879 /* find a free register */
4880 for(r
=0;r
<NB_REGS
;r
++) {
4881 if (reg_classes
[r
] & rc
) {
4882 for(p
=vstack
;p
<=vtop
;p
++) {
4883 if ((p
->r
& VT_VALMASK
) == r
||
4884 (p
->r2
& VT_VALMASK
) == r
)
4892 /* no register left : free the first one on the stack (VERY
4893 IMPORTANT to start from the bottom to ensure that we don't
4894 spill registers used in gen_opi()) */
4895 for(p
=vstack
;p
<=vtop
;p
++) {
4896 r
= p
->r
& VT_VALMASK
;
4897 if (r
< VT_CONST
&& (reg_classes
[r
] & rc
))
4899 /* also look at second register (if long long) */
4900 r
= p
->r2
& VT_VALMASK
;
4901 if (r
< VT_CONST
&& (reg_classes
[r
] & rc
)) {
4907 /* Should never comes here */
4911 /* save registers up to (vtop - n) stack entry */
4912 void save_regs(int n
)
4917 for(p
= vstack
;p
<= p1
; p
++) {
4918 r
= p
->r
& VT_VALMASK
;
4925 /* move register 's' to 'r', and flush previous value of r to memory
4927 void move_reg(int r
, int s
)
4940 /* get address of vtop (vtop MUST BE an lvalue) */
4943 vtop
->r
&= ~VT_LVAL
;
4944 /* tricky: if saved lvalue, then we can go back to lvalue */
4945 if ((vtop
->r
& VT_VALMASK
) == VT_LLOCAL
)
4946 vtop
->r
= (vtop
->r
& ~(VT_VALMASK
| VT_LVAL_TYPE
)) | VT_LOCAL
| VT_LVAL
;
4949 #ifdef CONFIG_TCC_BCHECK
4950 /* generate lvalue bound code */
4956 vtop
->r
&= ~VT_MUSTBOUND
;
4957 /* if lvalue, then use checking code before dereferencing */
4958 if (vtop
->r
& VT_LVAL
) {
4959 /* if not VT_BOUNDED value, then make one */
4960 if (!(vtop
->r
& VT_BOUNDED
)) {
4961 lval_type
= vtop
->r
& (VT_LVAL_TYPE
| VT_LVAL
);
4962 /* must save type because we must set it to int to get pointer */
4964 vtop
->type
.t
= VT_INT
;
4967 gen_bounded_ptr_add();
4968 vtop
->r
|= lval_type
;
4971 /* then check for dereferencing */
4972 gen_bounded_ptr_deref();
4977 /* store vtop a register belonging to class 'rc'. lvalues are
4978 converted to values. Cannot be used if cannot be converted to
4979 register value (such as structures). */
4982 int r
, rc2
, bit_pos
, bit_size
, size
, align
, i
;
4984 /* NOTE: get_reg can modify vstack[] */
4985 if (vtop
->type
.t
& VT_BITFIELD
) {
4988 bit_pos
= (vtop
->type
.t
>> VT_STRUCT_SHIFT
) & 0x3f;
4989 bit_size
= (vtop
->type
.t
>> (VT_STRUCT_SHIFT
+ 6)) & 0x3f;
4990 /* remove bit field info to avoid loops */
4991 vtop
->type
.t
&= ~(VT_BITFIELD
| (-1 << VT_STRUCT_SHIFT
));
4992 /* cast to int to propagate signedness in following ops */
4993 if ((vtop
->type
.t
& VT_BTYPE
) == VT_LLONG
) {
4998 if((vtop
->type
.t
& VT_UNSIGNED
) ||
4999 (vtop
->type
.t
& VT_BTYPE
) == VT_BOOL
)
5000 type
.t
|= VT_UNSIGNED
;
5002 /* generate shifts */
5003 vpushi(bits
- (bit_pos
+ bit_size
));
5005 vpushi(bits
- bit_size
);
5006 /* NOTE: transformed to SHR if unsigned */
5010 if (is_float(vtop
->type
.t
) &&
5011 (vtop
->r
& (VT_VALMASK
| VT_LVAL
)) == VT_CONST
) {
5014 unsigned long offset
;
5015 #if defined(TCC_TARGET_ARM) && !defined(TCC_ARM_VFP)
5019 /* XXX: unify with initializers handling ? */
5020 /* CPUs usually cannot use float constants, so we store them
5021 generically in data segment */
5022 size
= type_size(&vtop
->type
, &align
);
5023 offset
= (data_section
->data_offset
+ align
- 1) & -align
;
5024 data_section
->data_offset
= offset
;
5025 /* XXX: not portable yet */
5026 #if defined(__i386__) || defined(__x86_64__)
5027 /* Zero pad x87 tenbyte long doubles */
5028 if (size
== LDOUBLE_SIZE
)
5029 vtop
->c
.tab
[2] &= 0xffff;
5031 ptr
= section_ptr_add(data_section
, size
);
5033 #if defined(TCC_TARGET_ARM) && !defined(TCC_ARM_VFP)
5037 ptr
[i
] = vtop
->c
.tab
[size
-1-i
];
5041 ptr
[i
] = vtop
->c
.tab
[i
];
5042 sym
= get_sym_ref(&vtop
->type
, data_section
, offset
, size
<< 2);
5043 vtop
->r
|= VT_LVAL
| VT_SYM
;
5047 #ifdef CONFIG_TCC_BCHECK
5048 if (vtop
->r
& VT_MUSTBOUND
)
5052 r
= vtop
->r
& VT_VALMASK
;
5056 /* need to reload if:
5058 - lvalue (need to dereference pointer)
5059 - already a register, but not in the right class */
5060 if (r
>= VT_CONST
||
5061 (vtop
->r
& VT_LVAL
) ||
5062 !(reg_classes
[r
] & rc
) ||
5063 ((vtop
->type
.t
& VT_BTYPE
) == VT_LLONG
&&
5064 !(reg_classes
[vtop
->r2
] & rc2
))) {
5066 #ifndef TCC_TARGET_X86_64
5067 if ((vtop
->type
.t
& VT_BTYPE
) == VT_LLONG
) {
5069 unsigned long long ll
;
5070 /* two register type load : expand to two words
5072 if ((vtop
->r
& (VT_VALMASK
| VT_LVAL
)) == VT_CONST
) {
5075 vtop
->c
.ui
= ll
; /* first word */
5077 vtop
->r
= r
; /* save register value */
5078 vpushi(ll
>> 32); /* second word */
5079 } else if (r
>= VT_CONST
|| /* XXX: test to VT_CONST incorrect ? */
5080 (vtop
->r
& VT_LVAL
)) {
5081 /* We do not want to modifier the long long
5082 pointer here, so the safest (and less
5083 efficient) is to save all the other registers
5084 in the stack. XXX: totally inefficient. */
5086 /* load from memory */
5089 vtop
[-1].r
= r
; /* save register value */
5090 /* increment pointer to get second word */
5091 vtop
->type
.t
= VT_INT
;
5097 /* move registers */
5100 vtop
[-1].r
= r
; /* save register value */
5101 vtop
->r
= vtop
[-1].r2
;
5103 /* allocate second register */
5107 /* write second register */
5111 if ((vtop
->r
& VT_LVAL
) && !is_float(vtop
->type
.t
)) {
5113 /* lvalue of scalar type : need to use lvalue type
5114 because of possible cast */
5117 /* compute memory access type */
5118 if (vtop
->r
& VT_LVAL_BYTE
)
5120 else if (vtop
->r
& VT_LVAL_SHORT
)
5122 if (vtop
->r
& VT_LVAL_UNSIGNED
)
5126 /* restore wanted type */
5129 /* one register type load */
5134 #ifdef TCC_TARGET_C67
5135 /* uses register pairs for doubles */
5136 if ((vtop
->type
.t
& VT_BTYPE
) == VT_DOUBLE
)
5143 /* generate vtop[-1] and vtop[0] in resp. classes rc1 and rc2 */
5144 void gv2(int rc1
, int rc2
)
5148 /* generate more generic register first. But VT_JMP or VT_CMP
5149 values must be generated first in all cases to avoid possible
5151 v
= vtop
[0].r
& VT_VALMASK
;
5152 if (v
!= VT_CMP
&& (v
& ~1) != VT_JMP
&& rc1
<= rc2
) {
5157 /* test if reload is needed for first register */
5158 if ((vtop
[-1].r
& VT_VALMASK
) >= VT_CONST
) {
5168 /* test if reload is needed for first register */
5169 if ((vtop
[0].r
& VT_VALMASK
) >= VT_CONST
) {
5175 /* expand long long on stack in two int registers */
5180 u
= vtop
->type
.t
& VT_UNSIGNED
;
5183 vtop
[0].r
= vtop
[-1].r2
;
5184 vtop
[0].r2
= VT_CONST
;
5185 vtop
[-1].r2
= VT_CONST
;
5186 vtop
[0].type
.t
= VT_INT
| u
;
5187 vtop
[-1].type
.t
= VT_INT
| u
;
5190 #ifdef TCC_TARGET_ARM
5191 /* expand long long on stack */
5192 void lexpand_nr(void)
5196 u
= vtop
->type
.t
& VT_UNSIGNED
;
5198 vtop
->r2
= VT_CONST
;
5199 vtop
->type
.t
= VT_INT
| u
;
5200 v
=vtop
[-1].r
& (VT_VALMASK
| VT_LVAL
);
5201 if (v
== VT_CONST
) {
5202 vtop
[-1].c
.ui
= vtop
->c
.ull
;
5203 vtop
->c
.ui
= vtop
->c
.ull
>> 32;
5205 } else if (v
== (VT_LVAL
|VT_CONST
) || v
== (VT_LVAL
|VT_LOCAL
)) {
5207 vtop
->r
= vtop
[-1].r
;
5208 } else if (v
> VT_CONST
) {
5212 vtop
->r
= vtop
[-1].r2
;
5213 vtop
[-1].r2
= VT_CONST
;
5214 vtop
[-1].type
.t
= VT_INT
| u
;
5218 /* build a long long from two ints */
5221 gv2(RC_INT
, RC_INT
);
5222 vtop
[-1].r2
= vtop
[0].r
;
5223 vtop
[-1].type
.t
= t
;
5227 /* rotate n first stack elements to the bottom
5228 I1 ... In -> I2 ... In I1 [top is right]
5236 for(i
=-n
+1;i
!=0;i
++)
5237 vtop
[i
] = vtop
[i
+1];
5241 /* rotate n first stack elements to the top
5242 I1 ... In -> In I1 ... I(n-1) [top is right]
5250 for(i
= 0;i
< n
- 1; i
++)
5251 vtop
[-i
] = vtop
[-i
- 1];
5255 #ifdef TCC_TARGET_ARM
5256 /* like vrott but in other direction
5257 In ... I1 -> I(n-1) ... I1 In [top is right]
5265 for(i
= n
- 1; i
> 0; i
--)
5266 vtop
[-i
] = vtop
[-i
+ 1];
5271 /* pop stack value */
5275 v
= vtop
->r
& VT_VALMASK
;
5276 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
5277 /* for x86, we need to pop the FP stack */
5278 if (v
== TREG_ST0
&& !nocode_wanted
) {
5279 o(0xd9dd); /* fstp %st(1) */
5282 if (v
== VT_JMP
|| v
== VT_JMPI
) {
5283 /* need to put correct jump if && or || without test */
5289 /* convert stack entry to register and duplicate its value in another
5297 if ((t
& VT_BTYPE
) == VT_LLONG
) {
5304 /* stack: H L L1 H1 */
5312 /* duplicate value */
5317 #ifdef TCC_TARGET_X86_64
5318 if ((t
& VT_BTYPE
) == VT_LDOUBLE
) {
5328 load(r1
, &sv
); /* move r to r1 */
5330 /* duplicates value */
5335 #ifndef TCC_TARGET_X86_64
5336 /* generate CPU independent (unsigned) long long operations */
5337 void gen_opl(int op
)
5339 int t
, a
, b
, op1
, c
, i
;
5341 unsigned short reg_iret
= REG_IRET
;
5342 unsigned short reg_lret
= REG_LRET
;
5348 func
= TOK___divdi3
;
5351 func
= TOK___udivdi3
;
5354 func
= TOK___moddi3
;
5357 func
= TOK___umoddi3
;
5364 /* call generic long long function */
5365 vpush_global_sym(&func_old_type
, func
);
5370 vtop
->r2
= reg_lret
;
5383 /* stack: L1 H1 L2 H2 */
5388 vtop
[-2] = vtop
[-3];
5391 /* stack: H1 H2 L1 L2 */
5397 /* stack: H1 H2 L1 L2 ML MH */
5400 /* stack: ML MH H1 H2 L1 L2 */
5404 /* stack: ML MH H1 L2 H2 L1 */
5409 /* stack: ML MH M1 M2 */
5412 } else if (op
== '+' || op
== '-') {
5413 /* XXX: add non carry method too (for MIPS or alpha) */
5419 /* stack: H1 H2 (L1 op L2) */
5422 gen_op(op1
+ 1); /* TOK_xxxC2 */
5425 /* stack: H1 H2 (L1 op L2) */
5428 /* stack: (L1 op L2) H1 H2 */
5430 /* stack: (L1 op L2) (H1 op H2) */
5438 if ((vtop
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
) {
5439 t
= vtop
[-1].type
.t
;
5443 /* stack: L H shift */
5445 /* constant: simpler */
5446 /* NOTE: all comments are for SHL. the other cases are
5447 done by swaping words */
5458 if (op
!= TOK_SAR
) {
5491 /* XXX: should provide a faster fallback on x86 ? */
5494 func
= TOK___ashrdi3
;
5497 func
= TOK___lshrdi3
;
5500 func
= TOK___ashldi3
;
5506 /* compare operations */
5512 /* stack: L1 H1 L2 H2 */
5514 vtop
[-1] = vtop
[-2];
5516 /* stack: L1 L2 H1 H2 */
5519 /* when values are equal, we need to compare low words. since
5520 the jump is inverted, we invert the test too. */
5523 else if (op1
== TOK_GT
)
5525 else if (op1
== TOK_ULT
)
5527 else if (op1
== TOK_UGT
)
5532 if (op1
!= TOK_NE
) {
5536 /* generate non equal test */
5537 /* XXX: NOT PORTABLE yet */
5541 #if defined(TCC_TARGET_I386)
5542 b
= psym(0x850f, 0);
5543 #elif defined(TCC_TARGET_ARM)
5545 o(0x1A000000 | encbranch(ind
, 0, 1));
5546 #elif defined(TCC_TARGET_C67)
5547 error("not implemented");
5549 #error not supported
5553 /* compare low. Always unsigned */
5557 else if (op1
== TOK_LE
)
5559 else if (op1
== TOK_GT
)
5561 else if (op1
== TOK_GE
)
5572 /* handle integer constant optimizations and various machine
5574 void gen_opic(int op
)
5576 int c1
, c2
, t1
, t2
, n
;
5579 typedef unsigned long long U
;
5583 t1
= v1
->type
.t
& VT_BTYPE
;
5584 t2
= v2
->type
.t
& VT_BTYPE
;
5588 else if (v1
->type
.t
& VT_UNSIGNED
)
5595 else if (v2
->type
.t
& VT_UNSIGNED
)
5600 /* currently, we cannot do computations with forward symbols */
5601 c1
= (v1
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
;
5602 c2
= (v2
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
;
5605 case '+': l1
+= l2
; break;
5606 case '-': l1
-= l2
; break;
5607 case '&': l1
&= l2
; break;
5608 case '^': l1
^= l2
; break;
5609 case '|': l1
|= l2
; break;
5610 case '*': l1
*= l2
; break;
5617 /* if division by zero, generate explicit division */
5620 error("division by zero in constant");
5624 default: l1
/= l2
; break;
5625 case '%': l1
%= l2
; break;
5626 case TOK_UDIV
: l1
= (U
)l1
/ l2
; break;
5627 case TOK_UMOD
: l1
= (U
)l1
% l2
; break;
5630 case TOK_SHL
: l1
<<= l2
; break;
5631 case TOK_SHR
: l1
= (U
)l1
>> l2
; break;
5632 case TOK_SAR
: l1
>>= l2
; break;
5634 case TOK_ULT
: l1
= (U
)l1
< (U
)l2
; break;
5635 case TOK_UGE
: l1
= (U
)l1
>= (U
)l2
; break;
5636 case TOK_EQ
: l1
= l1
== l2
; break;
5637 case TOK_NE
: l1
= l1
!= l2
; break;
5638 case TOK_ULE
: l1
= (U
)l1
<= (U
)l2
; break;
5639 case TOK_UGT
: l1
= (U
)l1
> (U
)l2
; break;
5640 case TOK_LT
: l1
= l1
< l2
; break;
5641 case TOK_GE
: l1
= l1
>= l2
; break;
5642 case TOK_LE
: l1
= l1
<= l2
; break;
5643 case TOK_GT
: l1
= l1
> l2
; break;
5645 case TOK_LAND
: l1
= l1
&& l2
; break;
5646 case TOK_LOR
: l1
= l1
|| l2
; break;
5653 /* if commutative ops, put c2 as constant */
5654 if (c1
&& (op
== '+' || op
== '&' || op
== '^' ||
5655 op
== '|' || op
== '*')) {
5657 c2
= c1
; //c = c1, c1 = c2, c2 = c;
5658 l2
= l1
; //l = l1, l1 = l2, l2 = l;
5660 /* Filter out NOP operations like x*1, x-0, x&-1... */
5661 if (c2
&& (((op
== '*' || op
== '/' || op
== TOK_UDIV
||
5664 ((op
== '+' || op
== '-' || op
== '|' || op
== '^' ||
5665 op
== TOK_SHL
|| op
== TOK_SHR
|| op
== TOK_SAR
) &&
5671 } else if (c2
&& (op
== '*' || op
== TOK_PDIV
|| op
== TOK_UDIV
)) {
5672 /* try to use shifts instead of muls or divs */
5673 if (l2
> 0 && (l2
& (l2
- 1)) == 0) {
5682 else if (op
== TOK_PDIV
)
5688 } else if (c2
&& (op
== '+' || op
== '-') &&
5689 ((vtop
[-1].r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) ==
5690 (VT_CONST
| VT_SYM
) ||
5691 (vtop
[-1].r
& (VT_VALMASK
| VT_LVAL
)) == VT_LOCAL
)) {
5692 /* symbol + constant case */
5699 if (!nocode_wanted
) {
5700 /* call low level op generator */
5701 if (t1
== VT_LLONG
|| t2
== VT_LLONG
)
5712 /* generate a floating point operation with constant propagation */
5713 void gen_opif(int op
)
5721 /* currently, we cannot do computations with forward symbols */
5722 c1
= (v1
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
;
5723 c2
= (v2
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
;
5725 if (v1
->type
.t
== VT_FLOAT
) {
5728 } else if (v1
->type
.t
== VT_DOUBLE
) {
5736 /* NOTE: we only do constant propagation if finite number (not
5737 NaN or infinity) (ANSI spec) */
5738 if (!ieee_finite(f1
) || !ieee_finite(f2
))
5742 case '+': f1
+= f2
; break;
5743 case '-': f1
-= f2
; break;
5744 case '*': f1
*= f2
; break;
5748 error("division by zero in constant");
5753 /* XXX: also handles tests ? */
5757 /* XXX: overflow test ? */
5758 if (v1
->type
.t
== VT_FLOAT
) {
5760 } else if (v1
->type
.t
== VT_DOUBLE
) {
5768 if (!nocode_wanted
) {
5776 static int pointed_size(CType
*type
)
5779 return type_size(pointed_type(type
), &align
);
5782 static inline int is_null_pointer(SValue
*p
)
5784 if ((p
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) != VT_CONST
)
5786 return ((p
->type
.t
& VT_BTYPE
) == VT_INT
&& p
->c
.i
== 0) ||
5787 ((p
->type
.t
& VT_BTYPE
) == VT_LLONG
&& p
->c
.ll
== 0);
5790 static inline int is_integer_btype(int bt
)
5792 return (bt
== VT_BYTE
|| bt
== VT_SHORT
||
5793 bt
== VT_INT
|| bt
== VT_LLONG
);
5796 /* check types for comparison or substraction of pointers */
5797 static void check_comparison_pointer_types(SValue
*p1
, SValue
*p2
, int op
)
5799 CType
*type1
, *type2
, tmp_type1
, tmp_type2
;
5802 /* null pointers are accepted for all comparisons as gcc */
5803 if (is_null_pointer(p1
) || is_null_pointer(p2
))
5807 bt1
= type1
->t
& VT_BTYPE
;
5808 bt2
= type2
->t
& VT_BTYPE
;
5809 /* accept comparison between pointer and integer with a warning */
5810 if ((is_integer_btype(bt1
) || is_integer_btype(bt2
)) && op
!= '-') {
5811 if (op
!= TOK_LOR
&& op
!= TOK_LAND
)
5812 warning("comparison between pointer and integer");
5816 /* both must be pointers or implicit function pointers */
5817 if (bt1
== VT_PTR
) {
5818 type1
= pointed_type(type1
);
5819 } else if (bt1
!= VT_FUNC
)
5820 goto invalid_operands
;
5822 if (bt2
== VT_PTR
) {
5823 type2
= pointed_type(type2
);
5824 } else if (bt2
!= VT_FUNC
) {
5826 error("invalid operands to binary %s", get_tok_str(op
, NULL
));
5828 if ((type1
->t
& VT_BTYPE
) == VT_VOID
||
5829 (type2
->t
& VT_BTYPE
) == VT_VOID
)
5833 tmp_type1
.t
&= ~(VT_UNSIGNED
| VT_CONSTANT
| VT_VOLATILE
);
5834 tmp_type2
.t
&= ~(VT_UNSIGNED
| VT_CONSTANT
| VT_VOLATILE
);
5835 if (!is_compatible_types(&tmp_type1
, &tmp_type2
)) {
5836 /* gcc-like error if '-' is used */
5838 goto invalid_operands
;
5840 warning("comparison of distinct pointer types lacks a cast");
5844 /* generic gen_op: handles types problems */
5847 int u
, t1
, t2
, bt1
, bt2
, t
;
5850 t1
= vtop
[-1].type
.t
;
5851 t2
= vtop
[0].type
.t
;
5852 bt1
= t1
& VT_BTYPE
;
5853 bt2
= t2
& VT_BTYPE
;
5855 if (bt1
== VT_PTR
|| bt2
== VT_PTR
) {
5856 /* at least one operand is a pointer */
5857 /* relationnal op: must be both pointers */
5858 if (op
>= TOK_ULT
&& op
<= TOK_LOR
) {
5859 check_comparison_pointer_types(vtop
- 1, vtop
, op
);
5860 /* pointers are handled are unsigned */
5861 #ifdef TCC_TARGET_X86_64
5862 t
= VT_LLONG
| VT_UNSIGNED
;
5864 t
= VT_INT
| VT_UNSIGNED
;
5868 /* if both pointers, then it must be the '-' op */
5869 if (bt1
== VT_PTR
&& bt2
== VT_PTR
) {
5871 error("cannot use pointers here");
5872 check_comparison_pointer_types(vtop
- 1, vtop
, op
);
5873 /* XXX: check that types are compatible */
5874 u
= pointed_size(&vtop
[-1].type
);
5876 /* set to integer type */
5877 #ifdef TCC_TARGET_X86_64
5878 vtop
->type
.t
= VT_LLONG
;
5880 vtop
->type
.t
= VT_INT
;
5885 /* exactly one pointer : must be '+' or '-'. */
5886 if (op
!= '-' && op
!= '+')
5887 error("cannot use pointers here");
5888 /* Put pointer as first operand */
5889 if (bt2
== VT_PTR
) {
5893 type1
= vtop
[-1].type
;
5894 #ifdef TCC_TARGET_X86_64
5895 vpushll(pointed_size(&vtop
[-1].type
));
5897 /* XXX: cast to int ? (long long case) */
5898 vpushi(pointed_size(&vtop
[-1].type
));
5901 #ifdef CONFIG_TCC_BCHECK
5902 /* if evaluating constant expression, no code should be
5903 generated, so no bound check */
5904 if (do_bounds_check
&& !const_wanted
) {
5905 /* if bounded pointers, we generate a special code to
5912 gen_bounded_ptr_add();
5918 /* put again type if gen_opic() swaped operands */
5921 } else if (is_float(bt1
) || is_float(bt2
)) {
5922 /* compute bigger type and do implicit casts */
5923 if (bt1
== VT_LDOUBLE
|| bt2
== VT_LDOUBLE
) {
5925 } else if (bt1
== VT_DOUBLE
|| bt2
== VT_DOUBLE
) {
5930 /* floats can only be used for a few operations */
5931 if (op
!= '+' && op
!= '-' && op
!= '*' && op
!= '/' &&
5932 (op
< TOK_ULT
|| op
> TOK_GT
))
5933 error("invalid operands for binary operation");
5935 } else if (bt1
== VT_LLONG
|| bt2
== VT_LLONG
) {
5936 /* cast to biggest op */
5938 /* convert to unsigned if it does not fit in a long long */
5939 if ((t1
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_LLONG
| VT_UNSIGNED
) ||
5940 (t2
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_LLONG
| VT_UNSIGNED
))
5944 /* integer operations */
5946 /* convert to unsigned if it does not fit in an integer */
5947 if ((t1
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_INT
| VT_UNSIGNED
) ||
5948 (t2
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_INT
| VT_UNSIGNED
))
5951 /* XXX: currently, some unsigned operations are explicit, so
5952 we modify them here */
5953 if (t
& VT_UNSIGNED
) {
5960 else if (op
== TOK_LT
)
5962 else if (op
== TOK_GT
)
5964 else if (op
== TOK_LE
)
5966 else if (op
== TOK_GE
)
5973 /* special case for shifts and long long: we keep the shift as
5975 if (op
== TOK_SHR
|| op
== TOK_SAR
|| op
== TOK_SHL
)
5982 if (op
>= TOK_ULT
&& op
<= TOK_GT
) {
5983 /* relationnal op: the result is an int */
5984 vtop
->type
.t
= VT_INT
;
5991 #ifndef TCC_TARGET_ARM
5992 /* generic itof for unsigned long long case */
5993 void gen_cvt_itof1(int t
)
5995 if ((vtop
->type
.t
& (VT_BTYPE
| VT_UNSIGNED
)) ==
5996 (VT_LLONG
| VT_UNSIGNED
)) {
5999 vpush_global_sym(&func_old_type
, TOK___floatundisf
);
6000 #if LDOUBLE_SIZE != 8
6001 else if (t
== VT_LDOUBLE
)
6002 vpush_global_sym(&func_old_type
, TOK___floatundixf
);
6005 vpush_global_sym(&func_old_type
, TOK___floatundidf
);
6016 /* generic ftoi for unsigned long long case */
6017 void gen_cvt_ftoi1(int t
)
6021 if (t
== (VT_LLONG
| VT_UNSIGNED
)) {
6022 /* not handled natively */
6023 st
= vtop
->type
.t
& VT_BTYPE
;
6025 vpush_global_sym(&func_old_type
, TOK___fixunssfdi
);
6026 #if LDOUBLE_SIZE != 8
6027 else if (st
== VT_LDOUBLE
)
6028 vpush_global_sym(&func_old_type
, TOK___fixunsxfdi
);
6031 vpush_global_sym(&func_old_type
, TOK___fixunsdfdi
);
6036 vtop
->r2
= REG_LRET
;
6042 /* force char or short cast */
6043 void force_charshort_cast(int t
)
6047 /* XXX: add optimization if lvalue : just change type and offset */
6052 if (t
& VT_UNSIGNED
) {
6053 vpushi((1 << bits
) - 1);
6059 /* result must be signed or the SAR is converted to an SHL
6060 This was not the case when "t" was a signed short
6061 and the last value on the stack was an unsigned int */
6062 vtop
->type
.t
&= ~VT_UNSIGNED
;
6068 /* cast 'vtop' to 'type'. Casting to bitfields is forbidden. */
6069 static void gen_cast(CType
*type
)
6071 int sbt
, dbt
, sf
, df
, c
, p
;
6073 /* special delayed cast for char/short */
6074 /* XXX: in some cases (multiple cascaded casts), it may still
6076 if (vtop
->r
& VT_MUSTCAST
) {
6077 vtop
->r
&= ~VT_MUSTCAST
;
6078 force_charshort_cast(vtop
->type
.t
);
6081 /* bitfields first get cast to ints */
6082 if (vtop
->type
.t
& VT_BITFIELD
) {
6086 dbt
= type
->t
& (VT_BTYPE
| VT_UNSIGNED
);
6087 sbt
= vtop
->type
.t
& (VT_BTYPE
| VT_UNSIGNED
);
6092 c
= (vtop
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
;
6093 p
= (vtop
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == (VT_CONST
| VT_SYM
);
6095 /* constant case: we can do it now */
6096 /* XXX: in ISOC, cannot do it if error in convert */
6097 if (sbt
== VT_FLOAT
)
6098 vtop
->c
.ld
= vtop
->c
.f
;
6099 else if (sbt
== VT_DOUBLE
)
6100 vtop
->c
.ld
= vtop
->c
.d
;
6103 if ((sbt
& VT_BTYPE
) == VT_LLONG
) {
6104 if (sbt
& VT_UNSIGNED
)
6105 vtop
->c
.ld
= vtop
->c
.ull
;
6107 vtop
->c
.ld
= vtop
->c
.ll
;
6109 if (sbt
& VT_UNSIGNED
)
6110 vtop
->c
.ld
= vtop
->c
.ui
;
6112 vtop
->c
.ld
= vtop
->c
.i
;
6115 if (dbt
== VT_FLOAT
)
6116 vtop
->c
.f
= (float)vtop
->c
.ld
;
6117 else if (dbt
== VT_DOUBLE
)
6118 vtop
->c
.d
= (double)vtop
->c
.ld
;
6119 } else if (sf
&& dbt
== (VT_LLONG
|VT_UNSIGNED
)) {
6120 vtop
->c
.ull
= (unsigned long long)vtop
->c
.ld
;
6121 } else if (sf
&& dbt
== VT_BOOL
) {
6122 vtop
->c
.i
= (vtop
->c
.ld
!= 0);
6125 vtop
->c
.ll
= (long long)vtop
->c
.ld
;
6126 else if (sbt
== (VT_LLONG
|VT_UNSIGNED
))
6127 vtop
->c
.ll
= vtop
->c
.ull
;
6128 else if (sbt
& VT_UNSIGNED
)
6129 vtop
->c
.ll
= vtop
->c
.ui
;
6130 else if (sbt
!= VT_LLONG
)
6131 vtop
->c
.ll
= vtop
->c
.i
;
6133 if (dbt
== (VT_LLONG
|VT_UNSIGNED
))
6134 vtop
->c
.ull
= vtop
->c
.ll
;
6135 else if (dbt
== VT_BOOL
)
6136 vtop
->c
.i
= (vtop
->c
.ll
!= 0);
6137 else if (dbt
!= VT_LLONG
) {
6139 if ((dbt
& VT_BTYPE
) == VT_BYTE
)
6141 else if ((dbt
& VT_BTYPE
) == VT_SHORT
)
6144 if(dbt
& VT_UNSIGNED
)
6145 vtop
->c
.ui
= ((unsigned int)vtop
->c
.ll
<< s
) >> s
;
6147 vtop
->c
.i
= ((int)vtop
->c
.ll
<< s
) >> s
;
6150 } else if (p
&& dbt
== VT_BOOL
) {
6153 } else if (!nocode_wanted
) {
6154 /* non constant case: generate code */
6156 /* convert from fp to fp */
6159 /* convert int to fp */
6162 /* convert fp to int */
6163 if (dbt
== VT_BOOL
) {
6167 /* we handle char/short/etc... with generic code */
6168 if (dbt
!= (VT_INT
| VT_UNSIGNED
) &&
6169 dbt
!= (VT_LLONG
| VT_UNSIGNED
) &&
6173 if (dbt
== VT_INT
&& (type
->t
& (VT_BTYPE
| VT_UNSIGNED
)) != dbt
) {
6174 /* additional cast for char/short... */
6179 } else if ((dbt
& VT_BTYPE
) == VT_LLONG
) {
6180 if ((sbt
& VT_BTYPE
) != VT_LLONG
) {
6181 /* scalar to long long */
6182 #ifndef TCC_TARGET_X86_64
6183 /* machine independent conversion */
6185 /* generate high word */
6186 if (sbt
== (VT_INT
| VT_UNSIGNED
)) {
6194 /* patch second register */
6195 vtop
[-1].r2
= vtop
->r
;
6199 if (sbt
!= (VT_INT
| VT_UNSIGNED
)) {
6200 /* x86_64 specific: movslq */
6202 o(0xc0 + (REG_VALUE(r
) << 3) + REG_VALUE(r
));
6206 } else if (dbt
== VT_BOOL
) {
6207 /* scalar to bool */
6210 } else if ((dbt
& VT_BTYPE
) == VT_BYTE
||
6211 (dbt
& VT_BTYPE
) == VT_SHORT
) {
6212 if (sbt
== VT_PTR
) {
6213 vtop
->type
.t
= VT_INT
;
6214 warning("nonportable conversion from pointer to char/short");
6216 force_charshort_cast(dbt
);
6217 } else if ((dbt
& VT_BTYPE
) == VT_INT
) {
6219 if (sbt
== VT_LLONG
) {
6220 /* from long long: just take low order word */
6224 /* if lvalue and single word type, nothing to do because
6225 the lvalue already contains the real type size (see
6226 VT_LVAL_xxx constants) */
6229 } else if ((dbt
& VT_BTYPE
) == VT_PTR
&& !(vtop
->r
& VT_LVAL
)) {
6230 /* if we are casting between pointer types,
6231 we must update the VT_LVAL_xxx size */
6232 vtop
->r
= (vtop
->r
& ~VT_LVAL_TYPE
)
6233 | (lvalue_type(type
->ref
->type
.t
) & VT_LVAL_TYPE
);
6238 /* return type size. Put alignment at 'a' */
6239 static int type_size(CType
*type
, int *a
)
6244 bt
= type
->t
& VT_BTYPE
;
6245 if (bt
== VT_STRUCT
) {
6250 } else if (bt
== VT_PTR
) {
6251 if (type
->t
& VT_ARRAY
) {
6255 ts
= type_size(&s
->type
, a
);
6257 if (ts
< 0 && s
->c
< 0)
6265 } else if (bt
== VT_LDOUBLE
) {
6267 return LDOUBLE_SIZE
;
6268 } else if (bt
== VT_DOUBLE
|| bt
== VT_LLONG
) {
6269 #ifdef TCC_TARGET_I386
6271 #elif defined(TCC_TARGET_ARM)
6281 } else if (bt
== VT_INT
|| bt
== VT_ENUM
|| bt
== VT_FLOAT
) {
6284 } else if (bt
== VT_SHORT
) {
6288 /* char, void, function, _Bool */
6294 /* return the pointed type of t */
6295 static inline CType
*pointed_type(CType
*type
)
6297 return &type
->ref
->type
;
6300 /* modify type so that its it is a pointer to type. */
6301 static void mk_pointer(CType
*type
)
6304 s
= sym_push(SYM_FIELD
, type
, 0, -1);
6305 type
->t
= VT_PTR
| (type
->t
& ~VT_TYPE
);
6309 /* compare function types. OLD functions match any new functions */
6310 static int is_compatible_func(CType
*type1
, CType
*type2
)
6316 if (!is_compatible_types(&s1
->type
, &s2
->type
))
6318 /* check func_call */
6319 if (FUNC_CALL(s1
->r
) != FUNC_CALL(s2
->r
))
6321 /* XXX: not complete */
6322 if (s1
->c
== FUNC_OLD
|| s2
->c
== FUNC_OLD
)
6326 while (s1
!= NULL
) {
6329 if (!is_compatible_parameter_types(&s1
->type
, &s2
->type
))
6339 /* return true if type1 and type2 are the same. If unqualified is
6340 true, qualifiers on the types are ignored.
6342 - enums are not checked as gcc __builtin_types_compatible_p ()
6344 static int compare_types(CType
*type1
, CType
*type2
, int unqualified
)
6348 t1
= type1
->t
& VT_TYPE
;
6349 t2
= type2
->t
& VT_TYPE
;
6351 /* strip qualifiers before comparing */
6352 t1
&= ~(VT_CONSTANT
| VT_VOLATILE
);
6353 t2
&= ~(VT_CONSTANT
| VT_VOLATILE
);
6355 /* XXX: bitfields ? */
6358 /* test more complicated cases */
6359 bt1
= t1
& VT_BTYPE
;
6360 if (bt1
== VT_PTR
) {
6361 type1
= pointed_type(type1
);
6362 type2
= pointed_type(type2
);
6363 return is_compatible_types(type1
, type2
);
6364 } else if (bt1
== VT_STRUCT
) {
6365 return (type1
->ref
== type2
->ref
);
6366 } else if (bt1
== VT_FUNC
) {
6367 return is_compatible_func(type1
, type2
);
6373 /* return true if type1 and type2 are exactly the same (including
6376 static int is_compatible_types(CType
*type1
, CType
*type2
)
6378 return compare_types(type1
,type2
,0);
6381 /* return true if type1 and type2 are the same (ignoring qualifiers).
6383 static int is_compatible_parameter_types(CType
*type1
, CType
*type2
)
6385 return compare_types(type1
,type2
,1);
6388 /* print a type. If 'varstr' is not NULL, then the variable is also
6389 printed in the type */
6391 /* XXX: add array and function pointers */
6392 void type_to_str(char *buf
, int buf_size
,
6393 CType
*type
, const char *varstr
)
6400 t
= type
->t
& VT_TYPE
;
6403 if (t
& VT_CONSTANT
)
6404 pstrcat(buf
, buf_size
, "const ");
6405 if (t
& VT_VOLATILE
)
6406 pstrcat(buf
, buf_size
, "volatile ");
6407 if (t
& VT_UNSIGNED
)
6408 pstrcat(buf
, buf_size
, "unsigned ");
6438 tstr
= "long double";
6440 pstrcat(buf
, buf_size
, tstr
);
6444 if (bt
== VT_STRUCT
)
6448 pstrcat(buf
, buf_size
, tstr
);
6449 v
= type
->ref
->v
& ~SYM_STRUCT
;
6450 if (v
>= SYM_FIRST_ANOM
)
6451 pstrcat(buf
, buf_size
, "<anonymous>");
6453 pstrcat(buf
, buf_size
, get_tok_str(v
, NULL
));
6457 type_to_str(buf
, buf_size
, &s
->type
, varstr
);
6458 pstrcat(buf
, buf_size
, "(");
6460 while (sa
!= NULL
) {
6461 type_to_str(buf1
, sizeof(buf1
), &sa
->type
, NULL
);
6462 pstrcat(buf
, buf_size
, buf1
);
6465 pstrcat(buf
, buf_size
, ", ");
6467 pstrcat(buf
, buf_size
, ")");
6471 pstrcpy(buf1
, sizeof(buf1
), "*");
6473 pstrcat(buf1
, sizeof(buf1
), varstr
);
6474 type_to_str(buf
, buf_size
, &s
->type
, buf1
);
6478 pstrcat(buf
, buf_size
, " ");
6479 pstrcat(buf
, buf_size
, varstr
);
6484 /* verify type compatibility to store vtop in 'dt' type, and generate
6486 static void gen_assign_cast(CType
*dt
)
6488 CType
*st
, *type1
, *type2
, tmp_type1
, tmp_type2
;
6489 char buf1
[256], buf2
[256];
6492 st
= &vtop
->type
; /* source type */
6493 dbt
= dt
->t
& VT_BTYPE
;
6494 sbt
= st
->t
& VT_BTYPE
;
6495 if (dt
->t
& VT_CONSTANT
)
6496 warning("assignment of read-only location");
6499 /* special cases for pointers */
6500 /* '0' can also be a pointer */
6501 if (is_null_pointer(vtop
))
6503 /* accept implicit pointer to integer cast with warning */
6504 if (is_integer_btype(sbt
)) {
6505 warning("assignment makes pointer from integer without a cast");
6508 type1
= pointed_type(dt
);
6509 /* a function is implicitely a function pointer */
6510 if (sbt
== VT_FUNC
) {
6511 if ((type1
->t
& VT_BTYPE
) != VT_VOID
&&
6512 !is_compatible_types(pointed_type(dt
), st
))
6519 type2
= pointed_type(st
);
6520 if ((type1
->t
& VT_BTYPE
) == VT_VOID
||
6521 (type2
->t
& VT_BTYPE
) == VT_VOID
) {
6522 /* void * can match anything */
6524 /* exact type match, except for unsigned */
6527 tmp_type1
.t
&= ~(VT_UNSIGNED
| VT_CONSTANT
| VT_VOLATILE
);
6528 tmp_type2
.t
&= ~(VT_UNSIGNED
| VT_CONSTANT
| VT_VOLATILE
);
6529 if (!is_compatible_types(&tmp_type1
, &tmp_type2
))
6530 warning("assignment from incompatible pointer type");
6532 /* check const and volatile */
6533 if ((!(type1
->t
& VT_CONSTANT
) && (type2
->t
& VT_CONSTANT
)) ||
6534 (!(type1
->t
& VT_VOLATILE
) && (type2
->t
& VT_VOLATILE
)))
6535 warning("assignment discards qualifiers from pointer target type");
6541 if (sbt
== VT_PTR
|| sbt
== VT_FUNC
) {
6542 warning("assignment makes integer from pointer without a cast");
6544 /* XXX: more tests */
6549 tmp_type1
.t
&= ~(VT_CONSTANT
| VT_VOLATILE
);
6550 tmp_type2
.t
&= ~(VT_CONSTANT
| VT_VOLATILE
);
6551 if (!is_compatible_types(&tmp_type1
, &tmp_type2
)) {
6553 type_to_str(buf1
, sizeof(buf1
), st
, NULL
);
6554 type_to_str(buf2
, sizeof(buf2
), dt
, NULL
);
6555 error("cannot cast '%s' to '%s'", buf1
, buf2
);
6563 /* store vtop in lvalue pushed on stack */
6566 int sbt
, dbt
, ft
, r
, t
, size
, align
, bit_size
, bit_pos
, rc
, delayed_cast
;
6568 ft
= vtop
[-1].type
.t
;
6569 sbt
= vtop
->type
.t
& VT_BTYPE
;
6570 dbt
= ft
& VT_BTYPE
;
6571 if (((sbt
== VT_INT
|| sbt
== VT_SHORT
) && dbt
== VT_BYTE
) ||
6572 (sbt
== VT_INT
&& dbt
== VT_SHORT
)) {
6573 /* optimize char/short casts */
6574 delayed_cast
= VT_MUSTCAST
;
6575 vtop
->type
.t
= ft
& (VT_TYPE
& ~(VT_BITFIELD
| (-1 << VT_STRUCT_SHIFT
)));
6576 /* XXX: factorize */
6577 if (ft
& VT_CONSTANT
)
6578 warning("assignment of read-only location");
6581 if (!(ft
& VT_BITFIELD
))
6582 gen_assign_cast(&vtop
[-1].type
);
6585 if (sbt
== VT_STRUCT
) {
6586 /* if structure, only generate pointer */
6587 /* structure assignment : generate memcpy */
6588 /* XXX: optimize if small size */
6589 if (!nocode_wanted
) {
6590 size
= type_size(&vtop
->type
, &align
);
6594 vpush_global_sym(&func_old_type
, TOK_memcpy8
);
6595 else if(!(align
& 3))
6596 vpush_global_sym(&func_old_type
, TOK_memcpy4
);
6599 vpush_global_sym(&func_old_type
, TOK_memcpy
);
6603 vtop
->type
.t
= VT_INT
;
6607 vtop
->type
.t
= VT_INT
;
6619 /* leave source on stack */
6620 } else if (ft
& VT_BITFIELD
) {
6621 /* bitfield store handling */
6622 bit_pos
= (ft
>> VT_STRUCT_SHIFT
) & 0x3f;
6623 bit_size
= (ft
>> (VT_STRUCT_SHIFT
+ 6)) & 0x3f;
6624 /* remove bit field info to avoid loops */
6625 vtop
[-1].type
.t
= ft
& ~(VT_BITFIELD
| (-1 << VT_STRUCT_SHIFT
));
6627 /* duplicate source into other register */
6632 if((ft
& VT_BTYPE
) == VT_BOOL
) {
6633 gen_cast(&vtop
[-1].type
);
6634 vtop
[-1].type
.t
= (vtop
[-1].type
.t
& ~VT_BTYPE
) | (VT_BYTE
| VT_UNSIGNED
);
6637 /* duplicate destination */
6639 vtop
[-1] = vtop
[-2];
6641 /* mask and shift source */
6642 if((ft
& VT_BTYPE
) != VT_BOOL
) {
6643 if((ft
& VT_BTYPE
) == VT_LLONG
) {
6644 vpushll((1ULL << bit_size
) - 1ULL);
6646 vpushi((1 << bit_size
) - 1);
6652 /* load destination, mask and or with source */
6654 if((ft
& VT_BTYPE
) == VT_LLONG
) {
6655 vpushll(~(((1ULL << bit_size
) - 1ULL) << bit_pos
));
6657 vpushi(~(((1 << bit_size
) - 1) << bit_pos
));
6664 /* pop off shifted source from "duplicate source..." above */
6668 #ifdef CONFIG_TCC_BCHECK
6669 /* bound check case */
6670 if (vtop
[-1].r
& VT_MUSTBOUND
) {
6676 if (!nocode_wanted
) {
6680 #ifdef TCC_TARGET_X86_64
6681 if ((ft
& VT_BTYPE
) == VT_LDOUBLE
) {
6686 r
= gv(rc
); /* generate value */
6687 /* if lvalue was saved on stack, must read it */
6688 if ((vtop
[-1].r
& VT_VALMASK
) == VT_LLOCAL
) {
6690 t
= get_reg(RC_INT
);
6691 #ifdef TCC_TARGET_X86_64
6696 sv
.r
= VT_LOCAL
| VT_LVAL
;
6697 sv
.c
.ul
= vtop
[-1].c
.ul
;
6699 vtop
[-1].r
= t
| VT_LVAL
;
6702 #ifndef TCC_TARGET_X86_64
6703 /* two word case handling : store second register at word + 4 */
6704 if ((ft
& VT_BTYPE
) == VT_LLONG
) {
6706 /* convert to int to increment easily */
6707 vtop
->type
.t
= VT_INT
;
6713 /* XXX: it works because r2 is spilled last ! */
6714 store(vtop
->r2
, vtop
- 1);
6719 vtop
--; /* NOT vpop() because on x86 it would flush the fp stack */
6720 vtop
->r
|= delayed_cast
;
6724 /* post defines POST/PRE add. c is the token ++ or -- */
6725 void inc(int post
, int c
)
6728 vdup(); /* save lvalue */
6730 gv_dup(); /* duplicate value */
6735 vpushi(c
- TOK_MID
);
6737 vstore(); /* store value */
6739 vpop(); /* if post op, return saved value */
6742 /* Parse GNUC __attribute__ extension. Currently, the following
6743 extensions are recognized:
6744 - aligned(n) : set data/function alignment.
6745 - packed : force data alignment to 1
6746 - section(x) : generate data/code in this section.
6747 - unused : currently ignored, but may be used someday.
6748 - regparm(n) : pass function parameters in registers (i386 only)
6750 static void parse_attribute(AttributeDef
*ad
)
6754 while (tok
== TOK_ATTRIBUTE1
|| tok
== TOK_ATTRIBUTE2
) {
6758 while (tok
!= ')') {
6759 if (tok
< TOK_IDENT
)
6760 expect("attribute name");
6768 expect("section name");
6769 ad
->section
= find_section(tcc_state
, (char *)tokc
.cstr
->data
);
6778 if (n
<= 0 || (n
& (n
- 1)) != 0)
6779 error("alignment must be a positive power of two");
6792 /* currently, no need to handle it because tcc does not
6793 track unused objects */
6797 /* currently, no need to handle it because tcc does not
6798 track unused objects */
6803 FUNC_CALL(ad
->func_attr
) = FUNC_CDECL
;
6808 FUNC_CALL(ad
->func_attr
) = FUNC_STDCALL
;
6810 #ifdef TCC_TARGET_I386
6820 FUNC_CALL(ad
->func_attr
) = FUNC_FASTCALL1
+ n
- 1;
6826 FUNC_CALL(ad
->func_attr
) = FUNC_FASTCALLW
;
6830 FUNC_EXPORT(ad
->func_attr
) = 1;
6833 if (tcc_state
->warn_unsupported
)
6834 warning("'%s' attribute ignored", get_tok_str(t
, NULL
));
6835 /* skip parameters */
6837 int parenthesis
= 0;
6841 else if (tok
== ')')
6844 } while (parenthesis
&& tok
!= -1);
6857 /* enum/struct/union declaration. u is either VT_ENUM or VT_STRUCT */
6858 static void struct_decl(CType
*type
, int u
)
6860 int a
, v
, size
, align
, maxalign
, c
, offset
;
6861 int bit_size
, bit_pos
, bsize
, bt
, lbit_pos
, prevbt
;
6862 Sym
*s
, *ss
, *ass
, **ps
;
6866 a
= tok
; /* save decl type */
6871 /* struct already defined ? return it */
6873 expect("struct/union/enum name");
6877 error("invalid type");
6884 /* we put an undefined size for struct/union */
6885 s
= sym_push(v
| SYM_STRUCT
, &type1
, 0, -1);
6886 s
->r
= 0; /* default alignment is zero as gcc */
6887 /* put struct/union/enum name in type */
6895 error("struct/union/enum already defined");
6896 /* cannot be empty */
6898 /* non empty enums are not allowed */
6899 if (a
== TOK_ENUM
) {
6903 expect("identifier");
6909 /* enum symbols have static storage */
6910 ss
= sym_push(v
, &int_type
, VT_CONST
, c
);
6911 ss
->type
.t
|= VT_STATIC
;
6916 /* NOTE: we accept a trailing comma */
6927 while (tok
!= '}') {
6928 parse_btype(&btype
, &ad
);
6934 type_decl(&type1
, &ad
, &v
, TYPE_DIRECT
| TYPE_ABSTRACT
);
6935 if (v
== 0 && (type1
.t
& VT_BTYPE
) != VT_STRUCT
)
6936 expect("identifier");
6937 if ((type1
.t
& VT_BTYPE
) == VT_FUNC
||
6938 (type1
.t
& (VT_TYPEDEF
| VT_STATIC
| VT_EXTERN
| VT_INLINE
)))
6939 error("invalid type for '%s'",
6940 get_tok_str(v
, NULL
));
6944 bit_size
= expr_const();
6945 /* XXX: handle v = 0 case for messages */
6947 error("negative width in bit-field '%s'",
6948 get_tok_str(v
, NULL
));
6949 if (v
&& bit_size
== 0)
6950 error("zero width for bit-field '%s'",
6951 get_tok_str(v
, NULL
));
6953 size
= type_size(&type1
, &align
);
6955 if (align
< ad
.aligned
)
6957 } else if (ad
.packed
) {
6959 } else if (*tcc_state
->pack_stack_ptr
) {
6960 if (align
> *tcc_state
->pack_stack_ptr
)
6961 align
= *tcc_state
->pack_stack_ptr
;
6964 if (bit_size
>= 0) {
6965 bt
= type1
.t
& VT_BTYPE
;
6972 error("bitfields must have scalar type");
6974 if (bit_size
> bsize
) {
6975 error("width of '%s' exceeds its type",
6976 get_tok_str(v
, NULL
));
6977 } else if (bit_size
== bsize
) {
6978 /* no need for bit fields */
6980 } else if (bit_size
== 0) {
6981 /* XXX: what to do if only padding in a
6983 /* zero size: means to pad */
6986 /* we do not have enough room ?
6987 did the type change?
6989 if ((bit_pos
+ bit_size
) > bsize
||
6990 bt
!= prevbt
|| a
== TOK_UNION
)
6993 /* XXX: handle LSB first */
6994 type1
.t
|= VT_BITFIELD
|
6995 (bit_pos
<< VT_STRUCT_SHIFT
) |
6996 (bit_size
<< (VT_STRUCT_SHIFT
+ 6));
6997 bit_pos
+= bit_size
;
7003 if (v
!= 0 || (type1
.t
& VT_BTYPE
) == VT_STRUCT
) {
7004 /* add new memory data only if starting
7006 if (lbit_pos
== 0) {
7007 if (a
== TOK_STRUCT
) {
7008 c
= (c
+ align
- 1) & -align
;
7017 if (align
> maxalign
)
7021 printf("add field %s offset=%d",
7022 get_tok_str(v
, NULL
), offset
);
7023 if (type1
.t
& VT_BITFIELD
) {
7024 printf(" pos=%d size=%d",
7025 (type1
.t
>> VT_STRUCT_SHIFT
) & 0x3f,
7026 (type1
.t
>> (VT_STRUCT_SHIFT
+ 6)) & 0x3f);
7031 if (v
== 0 && (type1
.t
& VT_BTYPE
) == VT_STRUCT
) {
7033 while ((ass
= ass
->next
) != NULL
) {
7034 ss
= sym_push(ass
->v
, &ass
->type
, 0, offset
+ ass
->c
);
7039 ss
= sym_push(v
| SYM_FIELD
, &type1
, 0, offset
);
7043 if (tok
== ';' || tok
== TOK_EOF
)
7050 /* store size and alignment */
7051 s
->c
= (c
+ maxalign
- 1) & -maxalign
;
7057 /* return 0 if no type declaration. otherwise, return the basic type
7060 static int parse_btype(CType
*type
, AttributeDef
*ad
)
7062 int t
, u
, type_found
, typespec_found
, typedef_found
;
7066 memset(ad
, 0, sizeof(AttributeDef
));
7074 /* currently, we really ignore extension */
7084 if ((t
& VT_BTYPE
) != 0)
7085 error("too many basic types");
7101 if ((t
& VT_BTYPE
) == VT_DOUBLE
) {
7102 t
= (t
& ~VT_BTYPE
) | VT_LDOUBLE
;
7103 } else if ((t
& VT_BTYPE
) == VT_LONG
) {
7104 t
= (t
& ~VT_BTYPE
) | VT_LLONG
;
7118 if ((t
& VT_BTYPE
) == VT_LONG
) {
7119 t
= (t
& ~VT_BTYPE
) | VT_LDOUBLE
;
7126 struct_decl(&type1
, VT_ENUM
);
7129 type
->ref
= type1
.ref
;
7133 struct_decl(&type1
, VT_STRUCT
);
7136 /* type modifiers */
7189 /* GNUC attribute */
7190 case TOK_ATTRIBUTE1
:
7191 case TOK_ATTRIBUTE2
:
7192 parse_attribute(ad
);
7199 parse_expr_type(&type1
);
7202 if (typespec_found
|| typedef_found
)
7205 if (!s
|| !(s
->type
.t
& VT_TYPEDEF
))
7208 t
|= (s
->type
.t
& ~VT_TYPEDEF
);
7209 type
->ref
= s
->type
.ref
;
7217 if ((t
& (VT_SIGNED
|VT_UNSIGNED
)) == (VT_SIGNED
|VT_UNSIGNED
))
7218 error("signed and unsigned modifier");
7219 if (tcc_state
->char_is_unsigned
) {
7220 if ((t
& (VT_SIGNED
|VT_UNSIGNED
|VT_BTYPE
)) == VT_BYTE
)
7225 /* long is never used as type */
7226 if ((t
& VT_BTYPE
) == VT_LONG
)
7227 #ifndef TCC_TARGET_X86_64
7228 t
= (t
& ~VT_BTYPE
) | VT_INT
;
7230 t
= (t
& ~VT_BTYPE
) | VT_LLONG
;
7236 /* convert a function parameter type (array to pointer and function to
7237 function pointer) */
7238 static inline void convert_parameter_type(CType
*pt
)
7240 /* remove const and volatile qualifiers (XXX: const could be used
7241 to indicate a const function parameter */
7242 pt
->t
&= ~(VT_CONSTANT
| VT_VOLATILE
);
7243 /* array must be transformed to pointer according to ANSI C */
7245 if ((pt
->t
& VT_BTYPE
) == VT_FUNC
) {
7250 static void post_type(CType
*type
, AttributeDef
*ad
)
7252 int n
, l
, t1
, arg_size
, align
;
7253 Sym
**plast
, *s
, *first
;
7258 /* function declaration */
7266 /* read param name and compute offset */
7267 if (l
!= FUNC_OLD
) {
7268 if (!parse_btype(&pt
, &ad1
)) {
7270 error("invalid type");
7277 if ((pt
.t
& VT_BTYPE
) == VT_VOID
&& tok
== ')')
7279 type_decl(&pt
, &ad1
, &n
, TYPE_DIRECT
| TYPE_ABSTRACT
);
7280 if ((pt
.t
& VT_BTYPE
) == VT_VOID
)
7281 error("parameter declared as void");
7282 arg_size
+= (type_size(&pt
, &align
) + 3) & ~3;
7287 expect("identifier");
7291 convert_parameter_type(&pt
);
7292 s
= sym_push(n
| SYM_FIELD
, &pt
, 0, 0);
7298 if (l
== FUNC_NEW
&& tok
== TOK_DOTS
) {
7305 /* if no parameters, then old type prototype */
7309 t1
= type
->t
& VT_STORAGE
;
7310 /* NOTE: const is ignored in returned type as it has a special
7311 meaning in gcc / C++ */
7312 type
->t
&= ~(VT_STORAGE
| VT_CONSTANT
);
7313 post_type(type
, ad
);
7314 /* we push a anonymous symbol which will contain the function prototype */
7315 FUNC_ARGS(ad
->func_attr
) = arg_size
;
7316 s
= sym_push(SYM_FIELD
, type
, ad
->func_attr
, l
);
7318 type
->t
= t1
| VT_FUNC
;
7320 } else if (tok
== '[') {
7321 /* array definition */
7327 error("invalid array size");
7330 /* parse next post type */
7331 t1
= type
->t
& VT_STORAGE
;
7332 type
->t
&= ~VT_STORAGE
;
7333 post_type(type
, ad
);
7335 /* we push a anonymous symbol which will contain the array
7337 s
= sym_push(SYM_FIELD
, type
, 0, n
);
7338 type
->t
= t1
| VT_ARRAY
| VT_PTR
;
7343 /* Parse a type declaration (except basic type), and return the type
7344 in 'type'. 'td' is a bitmask indicating which kind of type decl is
7345 expected. 'type' should contain the basic type. 'ad' is the
7346 attribute definition of the basic type. It can be modified by
7349 static void type_decl(CType
*type
, AttributeDef
*ad
, int *v
, int td
)
7352 CType type1
, *type2
;
7355 while (tok
== '*') {
7363 qualifiers
|= VT_CONSTANT
;
7368 qualifiers
|= VT_VOLATILE
;
7376 type
->t
|= qualifiers
;
7379 /* XXX: clarify attribute handling */
7380 if (tok
== TOK_ATTRIBUTE1
|| tok
== TOK_ATTRIBUTE2
)
7381 parse_attribute(ad
);
7383 /* recursive type */
7384 /* XXX: incorrect if abstract type for functions (e.g. 'int ()') */
7385 type1
.t
= 0; /* XXX: same as int */
7388 /* XXX: this is not correct to modify 'ad' at this point, but
7389 the syntax is not clear */
7390 if (tok
== TOK_ATTRIBUTE1
|| tok
== TOK_ATTRIBUTE2
)
7391 parse_attribute(ad
);
7392 type_decl(&type1
, ad
, v
, td
);
7395 /* type identifier */
7396 if (tok
>= TOK_IDENT
&& (td
& TYPE_DIRECT
)) {
7400 if (!(td
& TYPE_ABSTRACT
))
7401 expect("identifier");
7405 post_type(type
, ad
);
7406 if (tok
== TOK_ATTRIBUTE1
|| tok
== TOK_ATTRIBUTE2
)
7407 parse_attribute(ad
);
7410 /* append type at the end of type1 */
7423 /* compute the lvalue VT_LVAL_xxx needed to match type t. */
7424 static int lvalue_type(int t
)
7429 if (bt
== VT_BYTE
|| bt
== VT_BOOL
)
7431 else if (bt
== VT_SHORT
)
7435 if (t
& VT_UNSIGNED
)
7436 r
|= VT_LVAL_UNSIGNED
;
7440 /* indirection with full error checking and bound check */
7441 static void indir(void)
7443 if ((vtop
->type
.t
& VT_BTYPE
) != VT_PTR
) {
7444 if ((vtop
->type
.t
& VT_BTYPE
) == VT_FUNC
)
7448 if ((vtop
->r
& VT_LVAL
) && !nocode_wanted
)
7450 vtop
->type
= *pointed_type(&vtop
->type
);
7451 /* Arrays and functions are never lvalues */
7452 if (!(vtop
->type
.t
& VT_ARRAY
)
7453 && (vtop
->type
.t
& VT_BTYPE
) != VT_FUNC
) {
7454 vtop
->r
|= lvalue_type(vtop
->type
.t
);
7455 /* if bound checking, the referenced pointer must be checked */
7456 if (do_bounds_check
)
7457 vtop
->r
|= VT_MUSTBOUND
;
7461 /* pass a parameter to a function and do type checking and casting */
7462 static void gfunc_param_typed(Sym
*func
, Sym
*arg
)
7467 func_type
= func
->c
;
7468 if (func_type
== FUNC_OLD
||
7469 (func_type
== FUNC_ELLIPSIS
&& arg
== NULL
)) {
7470 /* default casting : only need to convert float to double */
7471 if ((vtop
->type
.t
& VT_BTYPE
) == VT_FLOAT
) {
7475 } else if (arg
== NULL
) {
7476 error("too many arguments to function");
7479 type
.t
&= ~VT_CONSTANT
; /* need to do that to avoid false warning */
7480 gen_assign_cast(&type
);
7484 /* parse an expression of the form '(type)' or '(expr)' and return its
7486 static void parse_expr_type(CType
*type
)
7492 if (parse_btype(type
, &ad
)) {
7493 type_decl(type
, &ad
, &n
, TYPE_ABSTRACT
);
7500 static void parse_type(CType
*type
)
7505 if (!parse_btype(type
, &ad
)) {
7508 type_decl(type
, &ad
, &n
, TYPE_ABSTRACT
);
7511 static void vpush_tokc(int t
)
7515 vsetc(&type
, VT_CONST
, &tokc
);
7518 static void unary(void)
7520 int n
, t
, align
, size
, r
;
7525 /* XXX: GCC 2.95.3 does not generate a table although it should be
7539 vpush_tokc(VT_INT
| VT_UNSIGNED
);
7543 vpush_tokc(VT_LLONG
);
7547 vpush_tokc(VT_LLONG
| VT_UNSIGNED
);
7551 vpush_tokc(VT_FLOAT
);
7555 vpush_tokc(VT_DOUBLE
);
7559 vpush_tokc(VT_LDOUBLE
);
7562 case TOK___FUNCTION__
:
7564 goto tok_identifier
;
7570 /* special function name identifier */
7571 len
= strlen(funcname
) + 1;
7572 /* generate char[len] type */
7577 vpush_ref(&type
, data_section
, data_section
->data_offset
, len
);
7578 ptr
= section_ptr_add(data_section
, len
);
7579 memcpy(ptr
, funcname
, len
);
7584 #ifdef TCC_TARGET_PE
7585 t
= VT_SHORT
| VT_UNSIGNED
;
7591 /* string parsing */
7594 if (tcc_state
->warn_write_strings
)
7599 memset(&ad
, 0, sizeof(AttributeDef
));
7600 decl_initializer_alloc(&type
, &ad
, VT_CONST
, 2, 0, 0);
7605 if (parse_btype(&type
, &ad
)) {
7606 type_decl(&type
, &ad
, &n
, TYPE_ABSTRACT
);
7608 /* check ISOC99 compound literal */
7610 /* data is allocated locally by default */
7615 /* all except arrays are lvalues */
7616 if (!(type
.t
& VT_ARRAY
))
7617 r
|= lvalue_type(type
.t
);
7618 memset(&ad
, 0, sizeof(AttributeDef
));
7619 decl_initializer_alloc(&type
, &ad
, r
, 1, 0, 0);
7624 } else if (tok
== '{') {
7625 /* save all registers */
7627 /* statement expression : we do not accept break/continue
7628 inside as GCC does */
7629 block(NULL
, NULL
, NULL
, NULL
, 0, 1);
7644 /* functions names must be treated as function pointers,
7645 except for unary '&' and sizeof. Since we consider that
7646 functions are not lvalues, we only have to handle it
7647 there and in function calls. */
7648 /* arrays can also be used although they are not lvalues */
7649 if ((vtop
->type
.t
& VT_BTYPE
) != VT_FUNC
&&
7650 !(vtop
->type
.t
& VT_ARRAY
) && !(vtop
->type
.t
& VT_LLOCAL
))
7652 mk_pointer(&vtop
->type
);
7658 if ((vtop
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
) {
7660 boolean
.t
= VT_BOOL
;
7662 vtop
->c
.i
= !vtop
->c
.i
;
7663 } else if ((vtop
->r
& VT_VALMASK
) == VT_CMP
)
7664 vtop
->c
.i
= vtop
->c
.i
^ 1;
7667 vseti(VT_JMP
, gtst(1, 0));
7678 /* in order to force cast, we add zero */
7680 if ((vtop
->type
.t
& VT_BTYPE
) == VT_PTR
)
7681 error("pointer not accepted for unary plus");
7691 parse_expr_type(&type
);
7695 size
= type_size(&type
, &align
);
7696 if (t
== TOK_SIZEOF
) {
7698 error("sizeof applied to an incomplete type");
7703 vtop
->type
.t
|= VT_UNSIGNED
;
7706 case TOK_builtin_types_compatible_p
:
7715 type1
.t
&= ~(VT_CONSTANT
| VT_VOLATILE
);
7716 type2
.t
&= ~(VT_CONSTANT
| VT_VOLATILE
);
7717 vpushi(is_compatible_types(&type1
, &type2
));
7720 case TOK_builtin_constant_p
:
7722 int saved_nocode_wanted
, res
;
7725 saved_nocode_wanted
= nocode_wanted
;
7728 res
= (vtop
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
;
7730 nocode_wanted
= saved_nocode_wanted
;
7735 case TOK_builtin_frame_address
:
7740 if (tok
!= TOK_CINT
) {
7741 error("__builtin_frame_address only takes integers");
7744 error("TCC only supports __builtin_frame_address(0)");
7750 vset(&type
, VT_LOCAL
, 0);
7768 goto tok_identifier
;
7770 /* allow to take the address of a label */
7771 if (tok
< TOK_UIDENT
)
7772 expect("label identifier");
7773 s
= label_find(tok
);
7775 s
= label_push(&global_label_stack
, tok
, LABEL_FORWARD
);
7777 if (s
->r
== LABEL_DECLARED
)
7778 s
->r
= LABEL_FORWARD
;
7781 s
->type
.t
= VT_VOID
;
7782 mk_pointer(&s
->type
);
7783 s
->type
.t
|= VT_STATIC
;
7785 vset(&s
->type
, VT_CONST
| VT_SYM
, 0);
7794 expect("identifier");
7798 error("'%s' undeclared", get_tok_str(t
, NULL
));
7799 /* for simple function calls, we tolerate undeclared
7800 external reference to int() function */
7801 if (tcc_state
->warn_implicit_function_declaration
)
7802 warning("implicit declaration of function '%s'",
7803 get_tok_str(t
, NULL
));
7804 s
= external_global_sym(t
, &func_old_type
, 0);
7806 if ((s
->type
.t
& (VT_STATIC
| VT_INLINE
| VT_BTYPE
)) ==
7807 (VT_STATIC
| VT_INLINE
| VT_FUNC
)) {
7808 /* if referencing an inline function, then we generate a
7809 symbol to it if not already done. It will have the
7810 effect to generate code for it at the end of the
7811 compilation unit. Inline function as always
7812 generated in the text section. */
7814 put_extern_sym(s
, text_section
, 0, 0);
7815 r
= VT_SYM
| VT_CONST
;
7819 vset(&s
->type
, r
, s
->c
);
7820 /* if forward reference, we must point to s */
7821 if (vtop
->r
& VT_SYM
) {
7828 /* post operations */
7830 if (tok
== TOK_INC
|| tok
== TOK_DEC
) {
7833 } else if (tok
== '.' || tok
== TOK_ARROW
) {
7835 if (tok
== TOK_ARROW
)
7840 /* expect pointer on structure */
7841 if ((vtop
->type
.t
& VT_BTYPE
) != VT_STRUCT
)
7842 expect("struct or union");
7846 while ((s
= s
->next
) != NULL
) {
7851 error("field not found: %s", get_tok_str(tok
& ~SYM_FIELD
, NULL
));
7852 /* add field offset to pointer */
7853 vtop
->type
= char_pointer_type
; /* change type to 'char *' */
7856 /* change type to field type, and set to lvalue */
7857 vtop
->type
= s
->type
;
7858 /* an array is never an lvalue */
7859 if (!(vtop
->type
.t
& VT_ARRAY
)) {
7860 vtop
->r
|= lvalue_type(vtop
->type
.t
);
7861 /* if bound checking, the referenced pointer must be checked */
7862 if (do_bounds_check
)
7863 vtop
->r
|= VT_MUSTBOUND
;
7866 } else if (tok
== '[') {
7872 } else if (tok
== '(') {
7878 if ((vtop
->type
.t
& VT_BTYPE
) != VT_FUNC
) {
7879 /* pointer test (no array accepted) */
7880 if ((vtop
->type
.t
& (VT_BTYPE
| VT_ARRAY
)) == VT_PTR
) {
7881 vtop
->type
= *pointed_type(&vtop
->type
);
7882 if ((vtop
->type
.t
& VT_BTYPE
) != VT_FUNC
)
7886 expect("function pointer");
7889 vtop
->r
&= ~VT_LVAL
; /* no lvalue */
7891 /* get return type */
7894 sa
= s
->next
; /* first parameter */
7897 /* compute first implicit argument if a structure is returned */
7898 if ((s
->type
.t
& VT_BTYPE
) == VT_STRUCT
) {
7899 /* get some space for the returned structure */
7900 size
= type_size(&s
->type
, &align
);
7901 loc
= (loc
- size
) & -align
;
7903 ret
.r
= VT_LOCAL
| VT_LVAL
;
7904 /* pass it as 'int' to avoid structure arg passing
7906 vseti(VT_LOCAL
, loc
);
7911 /* return in register */
7912 if (is_float(ret
.type
.t
)) {
7915 if ((ret
.type
.t
& VT_BTYPE
) == VT_LLONG
)
7924 gfunc_param_typed(s
, sa
);
7934 error("too few arguments to function");
7936 if (!nocode_wanted
) {
7937 gfunc_call(nb_args
);
7939 vtop
-= (nb_args
+ 1);
7942 vsetc(&ret
.type
, ret
.r
, &ret
.c
);
7950 static void uneq(void)
7956 (tok
>= TOK_A_MOD
&& tok
<= TOK_A_DIV
) ||
7957 tok
== TOK_A_XOR
|| tok
== TOK_A_OR
||
7958 tok
== TOK_A_SHL
|| tok
== TOK_A_SAR
) {
7973 static void expr_prod(void)
7978 while (tok
== '*' || tok
== '/' || tok
== '%') {
7986 static void expr_sum(void)
7991 while (tok
== '+' || tok
== '-') {
7999 static void expr_shift(void)
8004 while (tok
== TOK_SHL
|| tok
== TOK_SAR
) {
8012 static void expr_cmp(void)
8017 while ((tok
>= TOK_ULE
&& tok
<= TOK_GT
) ||
8018 tok
== TOK_ULT
|| tok
== TOK_UGE
) {
8026 static void expr_cmpeq(void)
8031 while (tok
== TOK_EQ
|| tok
== TOK_NE
) {
8039 static void expr_and(void)
8042 while (tok
== '&') {
8049 static void expr_xor(void)
8052 while (tok
== '^') {
8059 static void expr_or(void)
8062 while (tok
== '|') {
8069 /* XXX: fix this mess */
8070 static void expr_land_const(void)
8073 while (tok
== TOK_LAND
) {
8080 /* XXX: fix this mess */
8081 static void expr_lor_const(void)
8084 while (tok
== TOK_LOR
) {
8091 /* only used if non constant */
8092 static void expr_land(void)
8097 if (tok
== TOK_LAND
) {
8102 if (tok
!= TOK_LAND
) {
8112 static void expr_lor(void)
8117 if (tok
== TOK_LOR
) {
8122 if (tok
!= TOK_LOR
) {
8132 /* XXX: better constant handling */
8133 static void expr_eq(void)
8135 int tt
, u
, r1
, r2
, rc
, t1
, t2
, bt1
, bt2
;
8137 CType type
, type1
, type2
;
8144 boolean
.t
= VT_BOOL
;
8150 if (tok
!= ':' || !gnu_ext
) {
8165 if (vtop
!= vstack
) {
8166 /* needed to avoid having different registers saved in
8168 if (is_float(vtop
->type
.t
)) {
8170 #ifdef TCC_TARGET_X86_64
8171 if ((vtop
->type
.t
& VT_BTYPE
) == VT_LDOUBLE
) {
8181 if (tok
== ':' && gnu_ext
) {
8189 sv
= *vtop
; /* save value to handle it later */
8190 vtop
--; /* no vpop so that FP stack is not flushed */
8198 bt1
= t1
& VT_BTYPE
;
8200 bt2
= t2
& VT_BTYPE
;
8201 /* cast operands to correct type according to ISOC rules */
8202 if (is_float(bt1
) || is_float(bt2
)) {
8203 if (bt1
== VT_LDOUBLE
|| bt2
== VT_LDOUBLE
) {
8204 type
.t
= VT_LDOUBLE
;
8205 } else if (bt1
== VT_DOUBLE
|| bt2
== VT_DOUBLE
) {
8210 } else if (bt1
== VT_LLONG
|| bt2
== VT_LLONG
) {
8211 /* cast to biggest op */
8213 /* convert to unsigned if it does not fit in a long long */
8214 if ((t1
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_LLONG
| VT_UNSIGNED
) ||
8215 (t2
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_LLONG
| VT_UNSIGNED
))
8216 type
.t
|= VT_UNSIGNED
;
8217 } else if (bt1
== VT_PTR
|| bt2
== VT_PTR
) {
8218 /* XXX: test pointer compatibility */
8220 } else if (bt1
== VT_FUNC
|| bt2
== VT_FUNC
) {
8221 /* XXX: test function pointer compatibility */
8223 } else if (bt1
== VT_STRUCT
|| bt2
== VT_STRUCT
) {
8224 /* XXX: test structure compatibility */
8226 } else if (bt1
== VT_VOID
|| bt2
== VT_VOID
) {
8227 /* NOTE: as an extension, we accept void on only one side */
8230 /* integer operations */
8232 /* convert to unsigned if it does not fit in an integer */
8233 if ((t1
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_INT
| VT_UNSIGNED
) ||
8234 (t2
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_INT
| VT_UNSIGNED
))
8235 type
.t
|= VT_UNSIGNED
;
8238 /* now we convert second operand */
8240 if (VT_STRUCT
== (vtop
->type
.t
& VT_BTYPE
))
8243 if (is_float(type
.t
)) {
8245 #ifdef TCC_TARGET_X86_64
8246 if ((type
.t
& VT_BTYPE
) == VT_LDOUBLE
) {
8250 } else if ((type
.t
& VT_BTYPE
) == VT_LLONG
) {
8251 /* for long longs, we use fixed registers to avoid having
8252 to handle a complicated move */
8257 /* this is horrible, but we must also convert first
8261 /* put again first value and cast it */
8264 if (VT_STRUCT
== (vtop
->type
.t
& VT_BTYPE
))
8274 static void gexpr(void)
8285 /* parse an expression and return its type without any side effect. */
8286 static void expr_type(CType
*type
)
8288 int saved_nocode_wanted
;
8290 saved_nocode_wanted
= nocode_wanted
;
8295 nocode_wanted
= saved_nocode_wanted
;
8298 /* parse a unary expression and return its type without any side
8300 static void unary_type(CType
*type
)
8312 /* parse a constant expression and return value in vtop. */
8313 static void expr_const1(void)
8322 /* parse an integer constant and return its value. */
8323 static int expr_const(void)
8327 if ((vtop
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) != VT_CONST
)
8328 expect("constant expression");
8334 /* return the label token if current token is a label, otherwise
8336 static int is_label(void)
8340 /* fast test first */
8341 if (tok
< TOK_UIDENT
)
8343 /* no need to save tokc because tok is an identifier */
8350 unget_tok(last_tok
);
8355 static void block(int *bsym
, int *csym
, int *case_sym
, int *def_sym
,
8356 int case_reg
, int is_expr
)
8361 /* generate line number info */
8363 (last_line_num
!= file
->line_num
|| last_ind
!= ind
)) {
8364 put_stabn(N_SLINE
, 0, file
->line_num
, ind
- func_ind
);
8366 last_line_num
= file
->line_num
;
8370 /* default return value is (void) */
8372 vtop
->type
.t
= VT_VOID
;
8375 if (tok
== TOK_IF
) {
8382 block(bsym
, csym
, case_sym
, def_sym
, case_reg
, 0);
8384 if (c
== TOK_ELSE
) {
8388 block(bsym
, csym
, case_sym
, def_sym
, case_reg
, 0);
8389 gsym(d
); /* patch else jmp */
8392 } else if (tok
== TOK_WHILE
) {
8400 block(&a
, &b
, case_sym
, def_sym
, case_reg
, 0);
8404 } else if (tok
== '{') {
8408 /* record local declaration stack position */
8410 llabel
= local_label_stack
;
8411 /* handle local labels declarations */
8412 if (tok
== TOK_LABEL
) {
8415 if (tok
< TOK_UIDENT
)
8416 expect("label identifier");
8417 label_push(&local_label_stack
, tok
, LABEL_DECLARED
);
8427 while (tok
!= '}') {
8432 block(bsym
, csym
, case_sym
, def_sym
, case_reg
, is_expr
);
8435 /* pop locally defined labels */
8436 label_pop(&local_label_stack
, llabel
);
8437 /* pop locally defined symbols */
8439 /* XXX: this solution makes only valgrind happy...
8440 triggered by gcc.c-torture/execute/20000917-1.c */
8442 switch(vtop
->type
.t
& VT_BTYPE
) {
8447 for(p
=vtop
->type
.ref
;p
;p
=p
->prev
)
8449 error("unsupported expression type");
8452 sym_pop(&local_stack
, s
);
8454 } else if (tok
== TOK_RETURN
) {
8458 gen_assign_cast(&func_vt
);
8459 if ((func_vt
.t
& VT_BTYPE
) == VT_STRUCT
) {
8461 /* if returning structure, must copy it to implicit
8462 first pointer arg location */
8465 size
= type_size(&func_vt
,&align
);
8468 if((vtop
->r
!= (VT_LOCAL
| VT_LVAL
) || (vtop
->c
.i
& 3))
8472 loc
= (loc
- size
) & -4;
8475 vset(&type
, VT_LOCAL
| VT_LVAL
, addr
);
8478 vset(&int_type
, VT_LOCAL
| VT_LVAL
, addr
);
8480 vtop
->type
= int_type
;
8486 vset(&type
, VT_LOCAL
| VT_LVAL
, func_vc
);
8489 /* copy structure value to pointer */
8494 } else if (is_float(func_vt
.t
)) {
8499 vtop
--; /* NOT vpop() because on x86 it would flush the fp stack */
8502 rsym
= gjmp(rsym
); /* jmp */
8503 } else if (tok
== TOK_BREAK
) {
8506 error("cannot break");
8507 *bsym
= gjmp(*bsym
);
8510 } else if (tok
== TOK_CONTINUE
) {
8513 error("cannot continue");
8514 *csym
= gjmp(*csym
);
8517 } else if (tok
== TOK_FOR
) {
8544 block(&a
, &b
, case_sym
, def_sym
, case_reg
, 0);
8549 if (tok
== TOK_DO
) {
8554 block(&a
, &b
, case_sym
, def_sym
, case_reg
, 0);
8565 if (tok
== TOK_SWITCH
) {
8569 /* XXX: other types than integer */
8570 case_reg
= gv(RC_INT
);
8574 b
= gjmp(0); /* jump to first case */
8576 block(&a
, csym
, &b
, &c
, case_reg
, 0);
8577 /* if no default, jmp after switch */
8585 if (tok
== TOK_CASE
) {
8592 if (gnu_ext
&& tok
== TOK_DOTS
) {
8596 warning("empty case range");
8598 /* since a case is like a label, we must skip it with a jmp */
8605 *case_sym
= gtst(1, 0);
8608 *case_sym
= gtst(1, 0);
8612 *case_sym
= gtst(1, *case_sym
);
8617 goto block_after_label
;
8619 if (tok
== TOK_DEFAULT
) {
8625 error("too many 'default'");
8628 goto block_after_label
;
8630 if (tok
== TOK_GOTO
) {
8632 if (tok
== '*' && gnu_ext
) {
8636 if ((vtop
->type
.t
& VT_BTYPE
) != VT_PTR
)
8639 } else if (tok
>= TOK_UIDENT
) {
8640 s
= label_find(tok
);
8641 /* put forward definition if needed */
8643 s
= label_push(&global_label_stack
, tok
, LABEL_FORWARD
);
8645 if (s
->r
== LABEL_DECLARED
)
8646 s
->r
= LABEL_FORWARD
;
8648 /* label already defined */
8649 if (s
->r
& LABEL_FORWARD
)
8650 s
->next
= (void *)gjmp((long)s
->next
);
8652 gjmp_addr((long)s
->next
);
8655 expect("label identifier");
8658 } else if (tok
== TOK_ASM1
|| tok
== TOK_ASM2
|| tok
== TOK_ASM3
) {
8666 if (s
->r
== LABEL_DEFINED
)
8667 error("duplicate label '%s'", get_tok_str(s
->v
, NULL
));
8668 gsym((long)s
->next
);
8669 s
->r
= LABEL_DEFINED
;
8671 s
= label_push(&global_label_stack
, b
, LABEL_DEFINED
);
8673 s
->next
= (void *)ind
;
8674 /* we accept this, but it is a mistake */
8677 warning("deprecated use of label at end of compound statement");
8681 block(bsym
, csym
, case_sym
, def_sym
, case_reg
, is_expr
);
8684 /* expression case */
8699 /* t is the array or struct type. c is the array or struct
8700 address. cur_index/cur_field is the pointer to the current
8701 value. 'size_only' is true if only size info is needed (only used
8703 static void decl_designator(CType
*type
, Section
*sec
, unsigned long c
,
8704 int *cur_index
, Sym
**cur_field
,
8708 int notfirst
, index
, index_last
, align
, l
, nb_elems
, elem_size
;
8714 if (gnu_ext
&& (l
= is_label()) != 0)
8716 while (tok
== '[' || tok
== '.') {
8718 if (!(type
->t
& VT_ARRAY
))
8719 expect("array type");
8722 index
= expr_const();
8723 if (index
< 0 || (s
->c
>= 0 && index
>= s
->c
))
8724 expect("invalid index");
8725 if (tok
== TOK_DOTS
&& gnu_ext
) {
8727 index_last
= expr_const();
8728 if (index_last
< 0 ||
8729 (s
->c
>= 0 && index_last
>= s
->c
) ||
8731 expect("invalid index");
8737 *cur_index
= index_last
;
8738 type
= pointed_type(type
);
8739 elem_size
= type_size(type
, &align
);
8740 c
+= index
* elem_size
;
8741 /* NOTE: we only support ranges for last designator */
8742 nb_elems
= index_last
- index
+ 1;
8743 if (nb_elems
!= 1) {
8752 if ((type
->t
& VT_BTYPE
) != VT_STRUCT
)
8753 expect("struct/union type");
8766 /* XXX: fix this mess by using explicit storage field */
8768 type1
.t
|= (type
->t
& ~VT_TYPE
);
8782 if (type
->t
& VT_ARRAY
) {
8784 type
= pointed_type(type
);
8785 c
+= index
* type_size(type
, &align
);
8789 error("too many field init");
8790 /* XXX: fix this mess by using explicit storage field */
8792 type1
.t
|= (type
->t
& ~VT_TYPE
);
8797 decl_initializer(type
, sec
, c
, 0, size_only
);
8799 /* XXX: make it more general */
8800 if (!size_only
&& nb_elems
> 1) {
8801 unsigned long c_end
;
8806 error("range init not supported yet for dynamic storage");
8807 c_end
= c
+ nb_elems
* elem_size
;
8808 if (c_end
> sec
->data_allocated
)
8809 section_realloc(sec
, c_end
);
8810 src
= sec
->data
+ c
;
8812 for(i
= 1; i
< nb_elems
; i
++) {
8814 memcpy(dst
, src
, elem_size
);
8820 #define EXPR_CONST 1
8823 /* store a value or an expression directly in global data or in local array */
8824 static void init_putv(CType
*type
, Section
*sec
, unsigned long c
,
8825 int v
, int expr_type
)
8827 int saved_global_expr
, bt
, bit_pos
, bit_size
;
8829 unsigned long long bit_mask
;
8837 /* compound literals must be allocated globally in this case */
8838 saved_global_expr
= global_expr
;
8841 global_expr
= saved_global_expr
;
8842 /* NOTE: symbols are accepted */
8843 if ((vtop
->r
& (VT_VALMASK
| VT_LVAL
)) != VT_CONST
)
8844 error("initializer element is not constant");
8852 dtype
.t
&= ~VT_CONSTANT
; /* need to do that to avoid false warning */
8855 /* XXX: not portable */
8856 /* XXX: generate error if incorrect relocation */
8857 gen_assign_cast(&dtype
);
8858 bt
= type
->t
& VT_BTYPE
;
8859 /* we'll write at most 12 bytes */
8860 if (c
+ 12 > sec
->data_allocated
) {
8861 section_realloc(sec
, c
+ 12);
8863 ptr
= sec
->data
+ c
;
8864 /* XXX: make code faster ? */
8865 if (!(type
->t
& VT_BITFIELD
)) {
8870 bit_pos
= (vtop
->type
.t
>> VT_STRUCT_SHIFT
) & 0x3f;
8871 bit_size
= (vtop
->type
.t
>> (VT_STRUCT_SHIFT
+ 6)) & 0x3f;
8872 bit_mask
= (1LL << bit_size
) - 1;
8874 if ((vtop
->r
& VT_SYM
) &&
8880 (bt
== VT_INT
&& bit_size
!= 32)))
8881 error("initializer element is not computable at load time");
8884 vtop
->c
.i
= (vtop
->c
.i
!= 0);
8886 *(char *)ptr
|= (vtop
->c
.i
& bit_mask
) << bit_pos
;
8889 *(short *)ptr
|= (vtop
->c
.i
& bit_mask
) << bit_pos
;
8892 *(double *)ptr
= vtop
->c
.d
;
8895 *(long double *)ptr
= vtop
->c
.ld
;
8898 *(long long *)ptr
|= (vtop
->c
.ll
& bit_mask
) << bit_pos
;
8901 if (vtop
->r
& VT_SYM
) {
8902 greloc(sec
, vtop
->sym
, c
, R_DATA_32
);
8904 *(int *)ptr
|= (vtop
->c
.i
& bit_mask
) << bit_pos
;
8909 vset(&dtype
, VT_LOCAL
|VT_LVAL
, c
);
8916 /* put zeros for variable based init */
8917 static void init_putz(CType
*t
, Section
*sec
, unsigned long c
, int size
)
8920 /* nothing to do because globals are already set to zero */
8922 vpush_global_sym(&func_old_type
, TOK_memset
);
8930 /* 't' contains the type and storage info. 'c' is the offset of the
8931 object in section 'sec'. If 'sec' is NULL, it means stack based
8932 allocation. 'first' is true if array '{' must be read (multi
8933 dimension implicit array init handling). 'size_only' is true if
8934 size only evaluation is wanted (only for arrays). */
8935 static void decl_initializer(CType
*type
, Section
*sec
, unsigned long c
,
8936 int first
, int size_only
)
8938 int index
, array_length
, n
, no_oblock
, nb
, parlevel
, i
;
8939 int size1
, align1
, expr_type
;
8943 if (type
->t
& VT_ARRAY
) {
8947 t1
= pointed_type(type
);
8948 size1
= type_size(t1
, &align1
);
8951 if ((first
&& tok
!= TOK_LSTR
&& tok
!= TOK_STR
) ||
8957 /* only parse strings here if correct type (otherwise: handle
8958 them as ((w)char *) expressions */
8959 if ((tok
== TOK_LSTR
&&
8960 #ifdef TCC_TARGET_PE
8961 (t1
->t
& VT_BTYPE
) == VT_SHORT
&& (t1
->t
& VT_UNSIGNED
)
8963 (t1
->t
& VT_BTYPE
) == VT_INT
8965 ) || (tok
== TOK_STR
&& (t1
->t
& VT_BTYPE
) == VT_BYTE
)) {
8966 while (tok
== TOK_STR
|| tok
== TOK_LSTR
) {
8971 /* compute maximum number of chars wanted */
8973 cstr_len
= cstr
->size
;
8975 cstr_len
= cstr
->size
/ sizeof(nwchar_t
);
8978 if (n
>= 0 && nb
> (n
- array_length
))
8979 nb
= n
- array_length
;
8982 warning("initializer-string for array is too long");
8983 /* in order to go faster for common case (char
8984 string in global variable, we handle it
8986 if (sec
&& tok
== TOK_STR
&& size1
== 1) {
8987 memcpy(sec
->data
+ c
+ array_length
, cstr
->data
, nb
);
8991 ch
= ((unsigned char *)cstr
->data
)[i
];
8993 ch
= ((nwchar_t
*)cstr
->data
)[i
];
8994 init_putv(t1
, sec
, c
+ (array_length
+ i
) * size1
,
9002 /* only add trailing zero if enough storage (no
9003 warning in this case since it is standard) */
9004 if (n
< 0 || array_length
< n
) {
9006 init_putv(t1
, sec
, c
+ (array_length
* size1
), 0, EXPR_VAL
);
9012 while (tok
!= '}') {
9013 decl_designator(type
, sec
, c
, &index
, NULL
, size_only
);
9014 if (n
>= 0 && index
>= n
)
9015 error("index too large");
9016 /* must put zero in holes (note that doing it that way
9017 ensures that it even works with designators) */
9018 if (!size_only
&& array_length
< index
) {
9019 init_putz(t1
, sec
, c
+ array_length
* size1
,
9020 (index
- array_length
) * size1
);
9023 if (index
> array_length
)
9024 array_length
= index
;
9025 /* special test for multi dimensional arrays (may not
9026 be strictly correct if designators are used at the
9028 if (index
>= n
&& no_oblock
)
9037 /* put zeros at the end */
9038 if (!size_only
&& n
>= 0 && array_length
< n
) {
9039 init_putz(t1
, sec
, c
+ array_length
* size1
,
9040 (n
- array_length
) * size1
);
9042 /* patch type size if needed */
9044 s
->c
= array_length
;
9045 } else if ((type
->t
& VT_BTYPE
) == VT_STRUCT
&&
9046 (sec
|| !first
|| tok
== '{')) {
9049 /* NOTE: the previous test is a specific case for automatic
9050 struct/union init */
9051 /* XXX: union needs only one init */
9053 /* XXX: this test is incorrect for local initializers
9054 beginning with ( without {. It would be much more difficult
9055 to do it correctly (ideally, the expression parser should
9056 be used in all cases) */
9062 while (tok
== '(') {
9066 if (!parse_btype(&type1
, &ad1
))
9068 type_decl(&type1
, &ad1
, &n
, TYPE_ABSTRACT
);
9070 if (!is_assignable_types(type
, &type1
))
9071 error("invalid type for cast");
9076 if (first
|| tok
== '{') {
9085 while (tok
!= '}') {
9086 decl_designator(type
, sec
, c
, NULL
, &f
, size_only
);
9088 if (!size_only
&& array_length
< index
) {
9089 init_putz(type
, sec
, c
+ array_length
,
9090 index
- array_length
);
9092 index
= index
+ type_size(&f
->type
, &align1
);
9093 if (index
> array_length
)
9094 array_length
= index
;
9096 if (no_oblock
&& f
== NULL
)
9102 /* put zeros at the end */
9103 if (!size_only
&& array_length
< n
) {
9104 init_putz(type
, sec
, c
+ array_length
,
9113 } else if (tok
== '{') {
9115 decl_initializer(type
, sec
, c
, first
, size_only
);
9117 } else if (size_only
) {
9118 /* just skip expression */
9120 while ((parlevel
> 0 || (tok
!= '}' && tok
!= ',')) &&
9124 else if (tok
== ')')
9129 /* currently, we always use constant expression for globals
9130 (may change for scripting case) */
9131 expr_type
= EXPR_CONST
;
9133 expr_type
= EXPR_ANY
;
9134 init_putv(type
, sec
, c
, 0, expr_type
);
9138 /* parse an initializer for type 't' if 'has_init' is non zero, and
9139 allocate space in local or global data space ('r' is either
9140 VT_LOCAL or VT_CONST). If 'v' is non zero, then an associated
9141 variable 'v' of scope 'scope' is declared before initializers are
9142 parsed. If 'v' is zero, then a reference to the new object is put
9143 in the value stack. If 'has_init' is 2, a special parsing is done
9144 to handle string constants. */
9145 static void decl_initializer_alloc(CType
*type
, AttributeDef
*ad
, int r
,
9146 int has_init
, int v
, int scope
)
9148 int size
, align
, addr
, data_offset
;
9150 ParseState saved_parse_state
;
9151 TokenString init_str
;
9154 size
= type_size(type
, &align
);
9155 /* If unknown size, we must evaluate it before
9156 evaluating initializers because
9157 initializers can generate global data too
9158 (e.g. string pointers or ISOC99 compound
9159 literals). It also simplifies local
9160 initializers handling */
9161 tok_str_new(&init_str
);
9164 error("unknown type size");
9165 /* get all init string */
9166 if (has_init
== 2) {
9167 /* only get strings */
9168 while (tok
== TOK_STR
|| tok
== TOK_LSTR
) {
9169 tok_str_add_tok(&init_str
);
9174 while (level
> 0 || (tok
!= ',' && tok
!= ';')) {
9176 error("unexpected end of file in initializer");
9177 tok_str_add_tok(&init_str
);
9180 else if (tok
== '}') {
9190 tok_str_add(&init_str
, -1);
9191 tok_str_add(&init_str
, 0);
9194 save_parse_state(&saved_parse_state
);
9196 macro_ptr
= init_str
.str
;
9198 decl_initializer(type
, NULL
, 0, 1, 1);
9199 /* prepare second initializer parsing */
9200 macro_ptr
= init_str
.str
;
9203 /* if still unknown size, error */
9204 size
= type_size(type
, &align
);
9206 error("unknown type size");
9208 /* take into account specified alignment if bigger */
9210 if (ad
->aligned
> align
)
9211 align
= ad
->aligned
;
9212 } else if (ad
->packed
) {
9215 if ((r
& VT_VALMASK
) == VT_LOCAL
) {
9217 if (do_bounds_check
&& (type
->t
& VT_ARRAY
))
9219 loc
= (loc
- size
) & -align
;
9221 /* handles bounds */
9222 /* XXX: currently, since we do only one pass, we cannot track
9223 '&' operators, so we add only arrays */
9224 if (do_bounds_check
&& (type
->t
& VT_ARRAY
)) {
9225 unsigned long *bounds_ptr
;
9226 /* add padding between regions */
9228 /* then add local bound info */
9229 bounds_ptr
= section_ptr_add(lbounds_section
, 2 * sizeof(unsigned long));
9230 bounds_ptr
[0] = addr
;
9231 bounds_ptr
[1] = size
;
9234 /* local variable */
9235 sym_push(v
, type
, r
, addr
);
9237 /* push local reference */
9238 vset(type
, r
, addr
);
9244 if (v
&& scope
== VT_CONST
) {
9245 /* see if the symbol was already defined */
9248 if (!is_compatible_types(&sym
->type
, type
))
9249 error("incompatible types for redefinition of '%s'",
9250 get_tok_str(v
, NULL
));
9251 if (sym
->type
.t
& VT_EXTERN
) {
9252 /* if the variable is extern, it was not allocated */
9253 sym
->type
.t
&= ~VT_EXTERN
;
9254 /* set array size if it was ommited in extern
9256 if ((sym
->type
.t
& VT_ARRAY
) &&
9257 sym
->type
.ref
->c
< 0 &&
9259 sym
->type
.ref
->c
= type
->ref
->c
;
9261 /* we accept several definitions of the same
9262 global variable. this is tricky, because we
9263 must play with the SHN_COMMON type of the symbol */
9264 /* XXX: should check if the variable was already
9265 initialized. It is incorrect to initialized it
9267 /* no init data, we won't add more to the symbol */
9274 /* allocate symbol in corresponding section */
9279 else if (tcc_state
->nocommon
)
9283 data_offset
= sec
->data_offset
;
9284 data_offset
= (data_offset
+ align
- 1) & -align
;
9286 /* very important to increment global pointer at this time
9287 because initializers themselves can create new initializers */
9288 data_offset
+= size
;
9289 /* add padding if bound check */
9290 if (do_bounds_check
)
9292 sec
->data_offset
= data_offset
;
9293 /* allocate section space to put the data */
9294 if (sec
->sh_type
!= SHT_NOBITS
&&
9295 data_offset
> sec
->data_allocated
)
9296 section_realloc(sec
, data_offset
);
9297 /* align section if needed */
9298 if (align
> sec
->sh_addralign
)
9299 sec
->sh_addralign
= align
;
9301 addr
= 0; /* avoid warning */
9305 if (scope
!= VT_CONST
|| !sym
) {
9306 sym
= sym_push(v
, type
, r
| VT_SYM
, 0);
9308 /* update symbol definition */
9310 put_extern_sym(sym
, sec
, addr
, size
);
9313 /* put a common area */
9314 put_extern_sym(sym
, NULL
, align
, size
);
9315 /* XXX: find a nicer way */
9316 esym
= &((ElfW(Sym
) *)symtab_section
->data
)[sym
->c
];
9317 esym
->st_shndx
= SHN_COMMON
;
9322 /* push global reference */
9323 sym
= get_sym_ref(type
, sec
, addr
, size
);
9325 vsetc(type
, VT_CONST
| VT_SYM
, &cval
);
9329 /* handles bounds now because the symbol must be defined
9330 before for the relocation */
9331 if (do_bounds_check
) {
9332 unsigned long *bounds_ptr
;
9334 greloc(bounds_section
, sym
, bounds_section
->data_offset
, R_DATA_32
);
9335 /* then add global bound info */
9336 bounds_ptr
= section_ptr_add(bounds_section
, 2 * sizeof(long));
9337 bounds_ptr
[0] = 0; /* relocated */
9338 bounds_ptr
[1] = size
;
9342 decl_initializer(type
, sec
, addr
, 1, 0);
9343 /* restore parse state if needed */
9345 tok_str_free(init_str
.str
);
9346 restore_parse_state(&saved_parse_state
);
9352 void put_func_debug(Sym
*sym
)
9357 /* XXX: we put here a dummy type */
9358 snprintf(buf
, sizeof(buf
), "%s:%c1",
9359 funcname
, sym
->type
.t
& VT_STATIC
? 'f' : 'F');
9360 put_stabs_r(buf
, N_FUN
, 0, file
->line_num
, 0,
9361 cur_text_section
, sym
->c
);
9362 /* //gr gdb wants a line at the function */
9363 put_stabn(N_SLINE
, 0, file
->line_num
, 0);
9368 /* parse an old style function declaration list */
9369 /* XXX: check multiple parameter */
9370 static void func_decl_list(Sym
*func_sym
)
9377 /* parse each declaration */
9378 while (tok
!= '{' && tok
!= ';' && tok
!= ',' && tok
!= TOK_EOF
) {
9379 if (!parse_btype(&btype
, &ad
))
9380 expect("declaration list");
9381 if (((btype
.t
& VT_BTYPE
) == VT_ENUM
||
9382 (btype
.t
& VT_BTYPE
) == VT_STRUCT
) &&
9384 /* we accept no variable after */
9388 type_decl(&type
, &ad
, &v
, TYPE_DIRECT
);
9389 /* find parameter in function parameter list */
9392 if ((s
->v
& ~SYM_FIELD
) == v
)
9396 error("declaration for parameter '%s' but no such parameter",
9397 get_tok_str(v
, NULL
));
9399 /* check that no storage specifier except 'register' was given */
9400 if (type
.t
& VT_STORAGE
)
9401 error("storage class specified for '%s'", get_tok_str(v
, NULL
));
9402 convert_parameter_type(&type
);
9403 /* we can add the type (NOTE: it could be local to the function) */
9405 /* accept other parameters */
9416 /* parse a function defined by symbol 'sym' and generate its code in
9417 'cur_text_section' */
9418 static void gen_function(Sym
*sym
)
9420 int saved_nocode_wanted
= nocode_wanted
;
9422 ind
= cur_text_section
->data_offset
;
9423 /* NOTE: we patch the symbol size later */
9424 put_extern_sym(sym
, cur_text_section
, ind
, 0);
9425 funcname
= get_tok_str(sym
->v
, NULL
);
9427 /* put debug symbol */
9429 put_func_debug(sym
);
9430 /* push a dummy symbol to enable local sym storage */
9431 sym_push2(&local_stack
, SYM_FIELD
, 0, 0);
9432 gfunc_prolog(&sym
->type
);
9434 block(NULL
, NULL
, NULL
, NULL
, 0, 0);
9437 cur_text_section
->data_offset
= ind
;
9438 label_pop(&global_label_stack
, NULL
);
9439 sym_pop(&local_stack
, NULL
); /* reset local stack */
9440 /* end of function */
9441 /* patch symbol size */
9442 ((ElfW(Sym
) *)symtab_section
->data
)[sym
->c
].st_size
=
9445 put_stabn(N_FUN
, 0, 0, ind
- func_ind
);
9447 /* It's better to crash than to generate wrong code */
9448 cur_text_section
= NULL
;
9449 funcname
= ""; /* for safety */
9450 func_vt
.t
= VT_VOID
; /* for safety */
9451 ind
= 0; /* for safety */
9452 nocode_wanted
= saved_nocode_wanted
;
9455 static void gen_inline_functions(void)
9459 int *str
, inline_generated
;
9461 /* iterate while inline function are referenced */
9463 inline_generated
= 0;
9464 for(sym
= global_stack
; sym
!= NULL
; sym
= sym
->prev
) {
9466 if (((type
->t
& VT_BTYPE
) == VT_FUNC
) &&
9467 (type
->t
& (VT_STATIC
| VT_INLINE
)) ==
9468 (VT_STATIC
| VT_INLINE
) &&
9470 /* the function was used: generate its code and
9471 convert it to a normal function */
9472 str
= INLINE_DEF(sym
->r
);
9473 sym
->r
= VT_SYM
| VT_CONST
;
9474 sym
->type
.t
&= ~VT_INLINE
;
9478 cur_text_section
= text_section
;
9480 macro_ptr
= NULL
; /* fail safe */
9483 inline_generated
= 1;
9486 if (!inline_generated
)
9490 /* free all remaining inline function tokens */
9491 for(sym
= global_stack
; sym
!= NULL
; sym
= sym
->prev
) {
9493 if (((type
->t
& VT_BTYPE
) == VT_FUNC
) &&
9494 (type
->t
& (VT_STATIC
| VT_INLINE
)) ==
9495 (VT_STATIC
| VT_INLINE
)) {
9496 //gr printf("sym %d %s\n", sym->r, get_tok_str(sym->v, NULL));
9497 if (sym
->r
== (VT_SYM
| VT_CONST
)) //gr beware!
9499 str
= INLINE_DEF(sym
->r
);
9501 sym
->r
= 0; /* fail safe */
9506 /* 'l' is VT_LOCAL or VT_CONST to define default storage type */
9507 static void decl(int l
)
9515 if (!parse_btype(&btype
, &ad
)) {
9516 /* skip redundant ';' */
9517 /* XXX: find more elegant solution */
9522 if (l
== VT_CONST
&&
9523 (tok
== TOK_ASM1
|| tok
== TOK_ASM2
|| tok
== TOK_ASM3
)) {
9524 /* global asm block */
9528 /* special test for old K&R protos without explicit int
9529 type. Only accepted when defining global data */
9530 if (l
== VT_LOCAL
|| tok
< TOK_DEFINE
)
9534 if (((btype
.t
& VT_BTYPE
) == VT_ENUM
||
9535 (btype
.t
& VT_BTYPE
) == VT_STRUCT
) &&
9537 /* we accept no variable after */
9541 while (1) { /* iterate thru each declaration */
9543 type_decl(&type
, &ad
, &v
, TYPE_DIRECT
);
9547 type_to_str(buf
, sizeof(buf
), t
, get_tok_str(v
, NULL
));
9548 printf("type = '%s'\n", buf
);
9551 if ((type
.t
& VT_BTYPE
) == VT_FUNC
) {
9552 /* if old style function prototype, we accept a
9555 if (sym
->c
== FUNC_OLD
)
9556 func_decl_list(sym
);
9561 error("cannot use local functions");
9562 if ((type
.t
& VT_BTYPE
) != VT_FUNC
)
9563 expect("function definition");
9565 /* reject abstract declarators in function definition */
9567 while ((sym
= sym
->next
) != NULL
)
9568 if (!(sym
->v
& ~SYM_FIELD
))
9569 expect("identifier");
9571 /* XXX: cannot do better now: convert extern line to static inline */
9572 if ((type
.t
& (VT_EXTERN
| VT_INLINE
)) == (VT_EXTERN
| VT_INLINE
))
9573 type
.t
= (type
.t
& ~VT_EXTERN
) | VT_STATIC
;
9577 if ((sym
->type
.t
& VT_BTYPE
) != VT_FUNC
)
9579 /* specific case: if not func_call defined, we put
9580 the one of the prototype */
9581 /* XXX: should have default value */
9582 r
= sym
->type
.ref
->r
;
9583 if (FUNC_CALL(r
) != FUNC_CDECL
9584 && FUNC_CALL(type
.ref
->r
) == FUNC_CDECL
)
9585 FUNC_CALL(type
.ref
->r
) = FUNC_CALL(r
);
9587 FUNC_EXPORT(type
.ref
->r
) = 1;
9589 if (!is_compatible_types(&sym
->type
, &type
)) {
9591 error("incompatible types for redefinition of '%s'",
9592 get_tok_str(v
, NULL
));
9594 /* if symbol is already defined, then put complete type */
9597 /* put function symbol */
9598 sym
= global_identifier_push(v
, type
.t
, 0);
9599 sym
->type
.ref
= type
.ref
;
9602 /* static inline functions are just recorded as a kind
9603 of macro. Their code will be emitted at the end of
9604 the compilation unit only if they are used */
9605 if ((type
.t
& (VT_INLINE
| VT_STATIC
)) ==
9606 (VT_INLINE
| VT_STATIC
)) {
9607 TokenString func_str
;
9610 tok_str_new(&func_str
);
9616 error("unexpected end of file");
9617 tok_str_add_tok(&func_str
);
9622 } else if (t
== '}') {
9624 if (block_level
== 0)
9628 tok_str_add(&func_str
, -1);
9629 tok_str_add(&func_str
, 0);
9630 INLINE_DEF(sym
->r
) = func_str
.str
;
9632 /* compute text section */
9633 cur_text_section
= ad
.section
;
9634 if (!cur_text_section
)
9635 cur_text_section
= text_section
;
9636 sym
->r
= VT_SYM
| VT_CONST
;
9641 if (btype
.t
& VT_TYPEDEF
) {
9642 /* save typedefed type */
9643 /* XXX: test storage specifiers ? */
9644 sym
= sym_push(v
, &type
, 0, 0);
9645 sym
->type
.t
|= VT_TYPEDEF
;
9646 } else if ((type
.t
& VT_BTYPE
) == VT_FUNC
) {
9647 /* external function definition */
9648 /* specific case for func_call attribute */
9650 type
.ref
->r
= ad
.func_attr
;
9651 external_sym(v
, &type
, 0);
9653 /* not lvalue if array */
9655 if (!(type
.t
& VT_ARRAY
))
9656 r
|= lvalue_type(type
.t
);
9657 has_init
= (tok
== '=');
9658 if ((btype
.t
& VT_EXTERN
) ||
9659 ((type
.t
& VT_ARRAY
) && (type
.t
& VT_STATIC
) &&
9660 !has_init
&& l
== VT_CONST
&& type
.ref
->c
< 0)) {
9661 /* external variable */
9662 /* NOTE: as GCC, uninitialized global static
9663 arrays of null size are considered as
9665 external_sym(v
, &type
, r
);
9667 type
.t
|= (btype
.t
& VT_STATIC
); /* Retain "static". */
9668 if (type
.t
& VT_STATIC
)
9674 decl_initializer_alloc(&type
, &ad
, r
,
9688 /* better than nothing, but needs extension to handle '-E' option
9690 static void preprocess_init(TCCState
*s1
)
9692 s1
->include_stack_ptr
= s1
->include_stack
;
9693 /* XXX: move that before to avoid having to initialize
9694 file->ifdef_stack_ptr ? */
9695 s1
->ifdef_stack_ptr
= s1
->ifdef_stack
;
9696 file
->ifdef_stack_ptr
= s1
->ifdef_stack_ptr
;
9698 /* XXX: not ANSI compliant: bound checking says error */
9700 s1
->pack_stack
[0] = 0;
9701 s1
->pack_stack_ptr
= s1
->pack_stack
;
9704 /* compile the C file opened in 'file'. Return non zero if errors. */
9705 static int tcc_compile(TCCState
*s1
)
9709 volatile int section_sym
;
9712 printf("%s: **** new file\n", file
->filename
);
9714 preprocess_init(s1
);
9716 cur_text_section
= NULL
;
9718 anon_sym
= SYM_FIRST_ANOM
;
9720 /* file info: full path + filename */
9721 section_sym
= 0; /* avoid warning */
9723 section_sym
= put_elf_sym(symtab_section
, 0, 0,
9724 ELFW(ST_INFO
)(STB_LOCAL
, STT_SECTION
), 0,
9725 text_section
->sh_num
, NULL
);
9726 getcwd(buf
, sizeof(buf
));
9728 normalize_slashes(buf
);
9730 pstrcat(buf
, sizeof(buf
), "/");
9731 put_stabs_r(buf
, N_SO
, 0, 0,
9732 text_section
->data_offset
, text_section
, section_sym
);
9733 put_stabs_r(file
->filename
, N_SO
, 0, 0,
9734 text_section
->data_offset
, text_section
, section_sym
);
9736 /* an elf symbol of type STT_FILE must be put so that STB_LOCAL
9737 symbols can be safely used */
9738 put_elf_sym(symtab_section
, 0, 0,
9739 ELFW(ST_INFO
)(STB_LOCAL
, STT_FILE
), 0,
9740 SHN_ABS
, file
->filename
);
9742 /* define some often used types */
9743 int_type
.t
= VT_INT
;
9745 char_pointer_type
.t
= VT_BYTE
;
9746 mk_pointer(&char_pointer_type
);
9748 func_old_type
.t
= VT_FUNC
;
9749 func_old_type
.ref
= sym_push(SYM_FIELD
, &int_type
, FUNC_CDECL
, FUNC_OLD
);
9751 #if defined(TCC_ARM_EABI) && defined(TCC_ARM_VFP)
9752 float_type
.t
= VT_FLOAT
;
9753 double_type
.t
= VT_DOUBLE
;
9755 func_float_type
.t
= VT_FUNC
;
9756 func_float_type
.ref
= sym_push(SYM_FIELD
, &float_type
, FUNC_CDECL
, FUNC_OLD
);
9757 func_double_type
.t
= VT_FUNC
;
9758 func_double_type
.ref
= sym_push(SYM_FIELD
, &double_type
, FUNC_CDECL
, FUNC_OLD
);
9762 /* define 'void *alloca(unsigned int)' builtin function */
9767 sym
= sym_push(p
, mk_pointer(VT_VOID
), FUNC_CDECL
, FUNC_NEW
);
9768 s1
= sym_push(SYM_FIELD
, VT_UNSIGNED
| VT_INT
, 0, 0);
9771 sym_push(TOK_alloca
, VT_FUNC
| (p
<< VT_STRUCT_SHIFT
), VT_CONST
, 0);
9775 define_start
= define_stack
;
9778 if (setjmp(s1
->error_jmp_buf
) == 0) {
9780 s1
->error_set_jmp_enabled
= 1;
9782 ch
= file
->buf_ptr
[0];
9783 tok_flags
= TOK_FLAG_BOL
| TOK_FLAG_BOF
;
9784 parse_flags
= PARSE_FLAG_PREPROCESS
| PARSE_FLAG_TOK_NUM
;
9788 expect("declaration");
9790 /* end of translation unit info */
9792 put_stabs_r(NULL
, N_SO
, 0, 0,
9793 text_section
->data_offset
, text_section
, section_sym
);
9796 s1
->error_set_jmp_enabled
= 0;
9798 /* reset define stack, but leave -Dsymbols (may be incorrect if
9799 they are undefined) */
9800 free_defines(define_start
);
9802 gen_inline_functions();
9804 sym_pop(&global_stack
, NULL
);
9805 sym_pop(&local_stack
, NULL
);
9807 return s1
->nb_errors
!= 0 ? -1 : 0;
9810 /* Preprocess the current file */
9811 /* XXX: add line and file infos,
9812 * XXX: add options to preserve spaces (partly done, only spaces in macro are
9815 static int tcc_preprocess(TCCState
*s1
)
9818 BufferedFile
*file_ref
;
9819 int token_seen
, line_ref
;
9821 preprocess_init(s1
);
9822 define_start
= define_stack
;
9823 ch
= file
->buf_ptr
[0];
9825 tok_flags
= TOK_FLAG_BOL
| TOK_FLAG_BOF
;
9826 parse_flags
= PARSE_FLAG_ASM_COMMENTS
| PARSE_FLAG_PREPROCESS
|
9827 PARSE_FLAG_LINEFEED
;
9835 if (tok
== TOK_EOF
) {
9837 } else if (tok
== TOK_LINEFEED
) {
9842 } else if (token_seen
) {
9843 fwrite(tok_spaces
.data
, tok_spaces
.size
, 1, s1
->outfile
);
9845 int d
= file
->line_num
- line_ref
;
9846 if (file
!= file_ref
|| d
< 0 || d
>= 8)
9847 fprintf(s1
->outfile
, "# %d \"%s\"\n", file
->line_num
, file
->filename
);
9850 fputs("\n", s1
->outfile
), --d
;
9851 line_ref
= (file_ref
= file
)->line_num
;
9854 fputs(get_tok_str(tok
, &tokc
), s1
->outfile
);
9856 free_defines(define_start
);
9861 int tcc_compile_string(TCCState
*s
, const char *str
)
9863 BufferedFile bf1
, *bf
= &bf1
;
9867 /* init file structure */
9869 /* XXX: avoid copying */
9871 buf
= tcc_malloc(len
+ 1);
9874 memcpy(buf
, str
, len
);
9877 bf
->buf_end
= buf
+ len
;
9878 pstrcpy(bf
->filename
, sizeof(bf
->filename
), "<string>");
9881 ret
= tcc_compile(s
);
9885 /* currently, no need to close */
9890 /* define a preprocessor symbol. A value can also be provided with the '=' operator */
9891 void tcc_define_symbol(TCCState
*s1
, const char *sym
, const char *value
)
9893 BufferedFile bf1
, *bf
= &bf1
;
9895 pstrcpy(bf
->buffer
, IO_BUF_SIZE
, sym
);
9896 pstrcat(bf
->buffer
, IO_BUF_SIZE
, " ");
9900 pstrcat(bf
->buffer
, IO_BUF_SIZE
, value
);
9902 /* init file structure */
9904 bf
->buf_ptr
= bf
->buffer
;
9905 bf
->buf_end
= bf
->buffer
+ strlen(bf
->buffer
);
9906 *bf
->buf_end
= CH_EOB
;
9907 bf
->filename
[0] = '\0';
9911 s1
->include_stack_ptr
= s1
->include_stack
;
9913 /* parse with define parser */
9914 ch
= file
->buf_ptr
[0];
9920 /* undefine a preprocessor symbol */
9921 void tcc_undefine_symbol(TCCState
*s1
, const char *sym
)
9925 ts
= tok_alloc(sym
, strlen(sym
));
9926 s
= define_find(ts
->tok
);
9927 /* undefine symbol by putting an invalid name */
9932 #ifdef CONFIG_TCC_ASM
9934 #ifdef TCC_TARGET_I386
9935 #include "i386-asm.c"
9940 static void asm_instr(void)
9942 error("inline asm() not supported");
9944 static void asm_global_instr(void)
9946 error("inline asm() not supported");
9952 #ifdef TCC_TARGET_COFF
9953 #include "tcccoff.c"
9956 #ifdef TCC_TARGET_PE
9960 /* print the position in the source file of PC value 'pc' by reading
9961 the stabs debug information */
9962 static void rt_printline(unsigned long wanted_pc
)
9964 Stab_Sym
*sym
, *sym_end
;
9965 char func_name
[128], last_func_name
[128];
9966 unsigned long func_addr
, last_pc
, pc
;
9967 const char *incl_files
[INCLUDE_STACK_SIZE
];
9968 int incl_index
, len
, last_line_num
, i
;
9969 const char *str
, *p
;
9971 fprintf(stderr
, "0x%08lx:", wanted_pc
);
9973 func_name
[0] = '\0';
9976 last_func_name
[0] = '\0';
9977 last_pc
= 0xffffffff;
9979 sym
= (Stab_Sym
*)stab_section
->data
+ 1;
9980 sym_end
= (Stab_Sym
*)(stab_section
->data
+ stab_section
->data_offset
);
9981 while (sym
< sym_end
) {
9982 switch(sym
->n_type
) {
9983 /* function start or end */
9985 if (sym
->n_strx
== 0) {
9986 /* we test if between last line and end of function */
9987 pc
= sym
->n_value
+ func_addr
;
9988 if (wanted_pc
>= last_pc
&& wanted_pc
< pc
)
9990 func_name
[0] = '\0';
9993 str
= stabstr_section
->data
+ sym
->n_strx
;
9994 p
= strchr(str
, ':');
9996 pstrcpy(func_name
, sizeof(func_name
), str
);
9999 if (len
> sizeof(func_name
) - 1)
10000 len
= sizeof(func_name
) - 1;
10001 memcpy(func_name
, str
, len
);
10002 func_name
[len
] = '\0';
10004 func_addr
= sym
->n_value
;
10007 /* line number info */
10009 pc
= sym
->n_value
+ func_addr
;
10010 if (wanted_pc
>= last_pc
&& wanted_pc
< pc
)
10013 last_line_num
= sym
->n_desc
;
10015 strcpy(last_func_name
, func_name
);
10017 /* include files */
10019 str
= stabstr_section
->data
+ sym
->n_strx
;
10021 if (incl_index
< INCLUDE_STACK_SIZE
) {
10022 incl_files
[incl_index
++] = str
;
10026 if (incl_index
> 1)
10030 if (sym
->n_strx
== 0) {
10031 incl_index
= 0; /* end of translation unit */
10033 str
= stabstr_section
->data
+ sym
->n_strx
;
10034 /* do not add path */
10036 if (len
> 0 && str
[len
- 1] != '/')
10044 /* second pass: we try symtab symbols (no line number info) */
10047 ElfW(Sym
) *sym
, *sym_end
;
10050 sym_end
= (ElfW(Sym
) *)(symtab_section
->data
+ symtab_section
->data_offset
);
10051 for(sym
= (ElfW(Sym
) *)symtab_section
->data
+ 1;
10054 type
= ELFW(ST_TYPE
)(sym
->st_info
);
10055 if (type
== STT_FUNC
) {
10056 if (wanted_pc
>= sym
->st_value
&&
10057 wanted_pc
< sym
->st_value
+ sym
->st_size
) {
10058 pstrcpy(last_func_name
, sizeof(last_func_name
),
10059 strtab_section
->data
+ sym
->st_name
);
10065 /* did not find any info: */
10066 fprintf(stderr
, " ???\n");
10069 if (last_func_name
[0] != '\0') {
10070 fprintf(stderr
, " %s()", last_func_name
);
10072 if (incl_index
> 0) {
10073 fprintf(stderr
, " (%s:%d",
10074 incl_files
[incl_index
- 1], last_line_num
);
10075 for(i
= incl_index
- 2; i
>= 0; i
--)
10076 fprintf(stderr
, ", included from %s", incl_files
[i
]);
10077 fprintf(stderr
, ")");
10079 fprintf(stderr
, "\n");
10082 #if !defined(_WIN32) && !defined(CONFIG_TCCBOOT)
10086 /* fix for glibc 2.1 */
10088 #define REG_EIP EIP
10089 #define REG_EBP EBP
10092 /* return the PC at frame level 'level'. Return non zero if not found */
10093 static int rt_get_caller_pc(unsigned long *paddr
,
10094 ucontext_t
*uc
, int level
)
10100 #if defined(__FreeBSD__)
10101 *paddr
= uc
->uc_mcontext
.mc_eip
;
10102 #elif defined(__dietlibc__)
10103 *paddr
= uc
->uc_mcontext
.eip
;
10105 *paddr
= uc
->uc_mcontext
.gregs
[REG_EIP
];
10109 #if defined(__FreeBSD__)
10110 fp
= uc
->uc_mcontext
.mc_ebp
;
10111 #elif defined(__dietlibc__)
10112 fp
= uc
->uc_mcontext
.ebp
;
10114 fp
= uc
->uc_mcontext
.gregs
[REG_EBP
];
10116 for(i
=1;i
<level
;i
++) {
10117 /* XXX: check address validity with program info */
10118 if (fp
<= 0x1000 || fp
>= 0xc0000000)
10120 fp
= ((unsigned long *)fp
)[0];
10122 *paddr
= ((unsigned long *)fp
)[1];
10126 #elif defined(__x86_64__)
10127 /* return the PC at frame level 'level'. Return non zero if not found */
10128 static int rt_get_caller_pc(unsigned long *paddr
,
10129 ucontext_t
*uc
, int level
)
10135 /* XXX: only support linux */
10136 *paddr
= uc
->uc_mcontext
.gregs
[REG_RIP
];
10139 fp
= uc
->uc_mcontext
.gregs
[REG_RBP
];
10140 for(i
=1;i
<level
;i
++) {
10141 /* XXX: check address validity with program info */
10142 if (fp
<= 0x1000 || fp
>= 0xc0000000)
10144 fp
= ((unsigned long *)fp
)[0];
10146 *paddr
= ((unsigned long *)fp
)[1];
10152 #warning add arch specific rt_get_caller_pc()
10154 static int rt_get_caller_pc(unsigned long *paddr
,
10155 ucontext_t
*uc
, int level
)
10161 /* emit a run time error at position 'pc' */
10162 void rt_error(ucontext_t
*uc
, const char *fmt
, ...)
10169 fprintf(stderr
, "Runtime error: ");
10170 vfprintf(stderr
, fmt
, ap
);
10171 fprintf(stderr
, "\n");
10172 for(i
=0;i
<num_callers
;i
++) {
10173 if (rt_get_caller_pc(&pc
, uc
, i
) < 0)
10176 fprintf(stderr
, "at ");
10178 fprintf(stderr
, "by ");
10185 /* signal handler for fatal errors */
10186 static void sig_error(int signum
, siginfo_t
*siginf
, void *puc
)
10188 ucontext_t
*uc
= puc
;
10192 switch(siginf
->si_code
) {
10195 rt_error(uc
, "division by zero");
10198 rt_error(uc
, "floating point exception");
10204 if (rt_bound_error_msg
&& *rt_bound_error_msg
)
10205 rt_error(uc
, *rt_bound_error_msg
);
10207 rt_error(uc
, "dereferencing invalid pointer");
10210 rt_error(uc
, "illegal instruction");
10213 rt_error(uc
, "abort() called");
10216 rt_error(uc
, "caught signal %d", signum
);
10223 /* do all relocations (needed before using tcc_get_symbol()) */
10224 int tcc_relocate(TCCState
*s1
)
10231 #ifdef TCC_TARGET_PE
10232 pe_add_runtime(s1
);
10234 tcc_add_runtime(s1
);
10237 relocate_common_syms();
10239 tcc_add_linker_symbols(s1
);
10240 #ifndef TCC_TARGET_PE
10241 build_got_entries(s1
);
10243 /* compute relocation address : section are relocated in place. We
10244 also alloc the bss space */
10245 for(i
= 1; i
< s1
->nb_sections
; i
++) {
10246 s
= s1
->sections
[i
];
10247 if (s
->sh_flags
& SHF_ALLOC
) {
10248 if (s
->sh_type
== SHT_NOBITS
)
10249 s
->data
= tcc_mallocz(s
->data_offset
);
10250 s
->sh_addr
= (unsigned long)s
->data
;
10254 relocate_syms(s1
, 1);
10256 if (s1
->nb_errors
!= 0)
10259 /* relocate each section */
10260 for(i
= 1; i
< s1
->nb_sections
; i
++) {
10261 s
= s1
->sections
[i
];
10263 relocate_section(s1
, s
);
10266 /* mark executable sections as executable in memory */
10267 for(i
= 1; i
< s1
->nb_sections
; i
++) {
10268 s
= s1
->sections
[i
];
10269 if ((s
->sh_flags
& (SHF_ALLOC
| SHF_EXECINSTR
)) ==
10270 (SHF_ALLOC
| SHF_EXECINSTR
))
10271 set_pages_executable(s
->data
, s
->data_offset
);
10276 /* launch the compiled program with the given arguments */
10277 int tcc_run(TCCState
*s1
, int argc
, char **argv
)
10279 int (*prog_main
)(int, char **);
10281 if (tcc_relocate(s1
) < 0)
10284 prog_main
= tcc_get_symbol_err(s1
, "main");
10287 #if defined(_WIN32) || defined(CONFIG_TCCBOOT)
10288 error("debug mode currently not available for Windows");
10290 struct sigaction sigact
;
10291 /* install TCC signal handlers to print debug info on fatal
10293 sigact
.sa_flags
= SA_SIGINFO
| SA_RESETHAND
;
10294 sigact
.sa_sigaction
= sig_error
;
10295 sigemptyset(&sigact
.sa_mask
);
10296 sigaction(SIGFPE
, &sigact
, NULL
);
10297 sigaction(SIGILL
, &sigact
, NULL
);
10298 sigaction(SIGSEGV
, &sigact
, NULL
);
10299 sigaction(SIGBUS
, &sigact
, NULL
);
10300 sigaction(SIGABRT
, &sigact
, NULL
);
10304 #ifdef CONFIG_TCC_BCHECK
10305 if (do_bounds_check
) {
10306 void (*bound_init
)(void);
10308 /* set error function */
10309 rt_bound_error_msg
= (void *)tcc_get_symbol_err(s1
,
10310 "__bound_error_msg");
10312 /* XXX: use .init section so that it also work in binary ? */
10313 bound_init
= (void *)tcc_get_symbol_err(s1
, "__bound_init");
10317 return (*prog_main
)(argc
, argv
);
10320 void tcc_memstats(void)
10323 printf("memory in use: %d\n", mem_cur_size
);
10327 static void tcc_cleanup(void)
10331 if (NULL
== tcc_state
)
10335 /* free -D defines */
10336 free_defines(NULL
);
10339 n
= tok_ident
- TOK_IDENT
;
10340 for(i
= 0; i
< n
; i
++)
10341 tcc_free(table_ident
[i
]);
10342 tcc_free(table_ident
);
10344 /* free sym_pools */
10345 dynarray_reset(&sym_pools
, &nb_sym_pools
);
10346 /* string buffer */
10347 cstr_free(&tokcstr
);
10348 /* reset symbol stack */
10349 sym_free_first
= NULL
;
10350 /* cleanup from error/setjmp */
10354 TCCState
*tcc_new(void)
10363 s
= tcc_mallocz(sizeof(TCCState
));
10367 s
->output_type
= TCC_OUTPUT_MEMORY
;
10369 /* init isid table */
10370 for(i
=CH_EOF
;i
<256;i
++)
10371 isidnum_table
[i
-CH_EOF
] = isid(i
) || isnum(i
);
10373 /* add all tokens */
10374 table_ident
= NULL
;
10375 memset(hash_ident
, 0, TOK_HASH_SIZE
* sizeof(TokenSym
*));
10377 tok_ident
= TOK_IDENT
;
10386 ts
= tok_alloc(p
, r
- p
- 1);
10390 /* we add dummy defines for some special macros to speed up tests
10391 and to have working defined() */
10392 define_push(TOK___LINE__
, MACRO_OBJ
, NULL
, NULL
);
10393 define_push(TOK___FILE__
, MACRO_OBJ
, NULL
, NULL
);
10394 define_push(TOK___DATE__
, MACRO_OBJ
, NULL
, NULL
);
10395 define_push(TOK___TIME__
, MACRO_OBJ
, NULL
, NULL
);
10397 /* standard defines */
10398 tcc_define_symbol(s
, "__STDC__", NULL
);
10399 tcc_define_symbol(s
, "__STDC_VERSION__", "199901L");
10400 #if defined(TCC_TARGET_I386)
10401 tcc_define_symbol(s
, "__i386__", NULL
);
10403 #if defined(TCC_TARGET_X86_64)
10404 tcc_define_symbol(s
, "__x86_64__", NULL
);
10406 #if defined(TCC_TARGET_ARM)
10407 tcc_define_symbol(s
, "__ARM_ARCH_4__", NULL
);
10408 tcc_define_symbol(s
, "__arm_elf__", NULL
);
10409 tcc_define_symbol(s
, "__arm_elf", NULL
);
10410 tcc_define_symbol(s
, "arm_elf", NULL
);
10411 tcc_define_symbol(s
, "__arm__", NULL
);
10412 tcc_define_symbol(s
, "__arm", NULL
);
10413 tcc_define_symbol(s
, "arm", NULL
);
10414 tcc_define_symbol(s
, "__APCS_32__", NULL
);
10416 #ifdef TCC_TARGET_PE
10417 tcc_define_symbol(s
, "_WIN32", NULL
);
10419 tcc_define_symbol(s
, "__unix__", NULL
);
10420 tcc_define_symbol(s
, "__unix", NULL
);
10421 #if defined(__linux)
10422 tcc_define_symbol(s
, "__linux__", NULL
);
10423 tcc_define_symbol(s
, "__linux", NULL
);
10426 /* tiny C specific defines */
10427 tcc_define_symbol(s
, "__TINYC__", NULL
);
10429 /* tiny C & gcc defines */
10430 tcc_define_symbol(s
, "__SIZE_TYPE__", "unsigned int");
10431 tcc_define_symbol(s
, "__PTRDIFF_TYPE__", "int");
10432 #ifdef TCC_TARGET_PE
10433 tcc_define_symbol(s
, "__WCHAR_TYPE__", "unsigned short");
10435 tcc_define_symbol(s
, "__WCHAR_TYPE__", "int");
10438 #ifndef TCC_TARGET_PE
10439 /* default library paths */
10440 tcc_add_library_path(s
, CONFIG_SYSROOT
"/usr/local/lib");
10441 tcc_add_library_path(s
, CONFIG_SYSROOT
"/usr/lib");
10442 tcc_add_library_path(s
, CONFIG_SYSROOT
"/lib");
10445 /* no section zero */
10446 dynarray_add((void ***)&s
->sections
, &s
->nb_sections
, NULL
);
10448 /* create standard sections */
10449 text_section
= new_section(s
, ".text", SHT_PROGBITS
, SHF_ALLOC
| SHF_EXECINSTR
);
10450 data_section
= new_section(s
, ".data", SHT_PROGBITS
, SHF_ALLOC
| SHF_WRITE
);
10451 bss_section
= new_section(s
, ".bss", SHT_NOBITS
, SHF_ALLOC
| SHF_WRITE
);
10453 /* symbols are always generated for linking stage */
10454 symtab_section
= new_symtab(s
, ".symtab", SHT_SYMTAB
, 0,
10456 ".hashtab", SHF_PRIVATE
);
10457 strtab_section
= symtab_section
->link
;
10459 /* private symbol table for dynamic symbols */
10460 s
->dynsymtab_section
= new_symtab(s
, ".dynsymtab", SHT_SYMTAB
, SHF_PRIVATE
,
10462 ".dynhashtab", SHF_PRIVATE
);
10463 s
->alacarte_link
= 1;
10465 #ifdef CHAR_IS_UNSIGNED
10466 s
->char_is_unsigned
= 1;
10468 #if defined(TCC_TARGET_PE) && 0
10469 /* XXX: currently the PE linker is not ready to support that */
10470 s
->leading_underscore
= 1;
10473 #ifdef TCC_TARGET_X86_64
10474 s
->jmp_table
= NULL
;
10479 void tcc_delete(TCCState
*s1
)
10485 /* free all sections */
10486 free_section(s1
->dynsymtab_section
);
10488 for(i
= 1; i
< s1
->nb_sections
; i
++)
10489 free_section(s1
->sections
[i
]);
10490 tcc_free(s1
->sections
);
10492 /* free any loaded DLLs */
10493 for ( i
= 0; i
< s1
->nb_loaded_dlls
; i
++)
10495 DLLReference
*ref
= s1
->loaded_dlls
[i
];
10497 dlclose(ref
->handle
);
10500 /* free loaded dlls array */
10501 dynarray_reset(&s1
->loaded_dlls
, &s1
->nb_loaded_dlls
);
10503 /* free library paths */
10504 dynarray_reset(&s1
->library_paths
, &s1
->nb_library_paths
);
10506 /* free include paths */
10507 dynarray_reset(&s1
->cached_includes
, &s1
->nb_cached_includes
);
10508 dynarray_reset(&s1
->include_paths
, &s1
->nb_include_paths
);
10509 dynarray_reset(&s1
->sysinclude_paths
, &s1
->nb_sysinclude_paths
);
10511 #ifdef TCC_TARGET_X86_64
10512 tcc_free(s1
->jmp_table
);
10517 int tcc_add_include_path(TCCState
*s1
, const char *pathname
)
10521 pathname1
= tcc_strdup(pathname
);
10522 dynarray_add((void ***)&s1
->include_paths
, &s1
->nb_include_paths
, pathname1
);
10526 int tcc_add_sysinclude_path(TCCState
*s1
, const char *pathname
)
10530 pathname1
= tcc_strdup(pathname
);
10531 dynarray_add((void ***)&s1
->sysinclude_paths
, &s1
->nb_sysinclude_paths
, pathname1
);
10535 static int tcc_add_file_internal(TCCState
*s1
, const char *filename
, int flags
)
10540 BufferedFile
*saved_file
;
10542 /* find source file type with extension */
10543 ext
= tcc_fileextension(filename
);
10547 /* open the file */
10549 file
= tcc_open(s1
, filename
);
10551 if (flags
& AFF_PRINT_ERROR
) {
10552 error_noabort("file '%s' not found", filename
);
10558 if (flags
& AFF_PREPROCESS
) {
10559 ret
= tcc_preprocess(s1
);
10560 } else if (!ext
[0] || !strcmp(ext
, "c")) {
10561 /* C file assumed */
10562 ret
= tcc_compile(s1
);
10564 #ifdef CONFIG_TCC_ASM
10565 if (!strcmp(ext
, "S")) {
10566 /* preprocessed assembler */
10567 ret
= tcc_assemble(s1
, 1);
10568 } else if (!strcmp(ext
, "s")) {
10569 /* non preprocessed assembler */
10570 ret
= tcc_assemble(s1
, 0);
10573 #ifdef TCC_TARGET_PE
10574 if (!strcmp(ext
, "def")) {
10575 ret
= pe_load_def_file(s1
, file
->fd
);
10580 /* assume executable format: auto guess file type */
10581 ret
= read(fd
, &ehdr
, sizeof(ehdr
));
10582 lseek(fd
, 0, SEEK_SET
);
10584 error_noabort("could not read header");
10586 } else if (ret
!= sizeof(ehdr
)) {
10587 goto try_load_script
;
10590 if (ehdr
.e_ident
[0] == ELFMAG0
&&
10591 ehdr
.e_ident
[1] == ELFMAG1
&&
10592 ehdr
.e_ident
[2] == ELFMAG2
&&
10593 ehdr
.e_ident
[3] == ELFMAG3
) {
10594 file
->line_num
= 0; /* do not display line number if error */
10595 if (ehdr
.e_type
== ET_REL
) {
10596 ret
= tcc_load_object_file(s1
, fd
, 0);
10597 } else if (ehdr
.e_type
== ET_DYN
) {
10598 if (s1
->output_type
== TCC_OUTPUT_MEMORY
) {
10599 #ifdef TCC_TARGET_PE
10603 h
= dlopen(filename
, RTLD_GLOBAL
| RTLD_LAZY
);
10610 ret
= tcc_load_dll(s1
, fd
, filename
,
10611 (flags
& AFF_REFERENCED_DLL
) != 0);
10614 error_noabort("unrecognized ELF file");
10617 } else if (memcmp((char *)&ehdr
, ARMAG
, 8) == 0) {
10618 file
->line_num
= 0; /* do not display line number if error */
10619 ret
= tcc_load_archive(s1
, fd
);
10621 #ifdef TCC_TARGET_COFF
10622 if (*(uint16_t *)(&ehdr
) == COFF_C67_MAGIC
) {
10623 ret
= tcc_load_coff(s1
, fd
);
10626 #ifdef TCC_TARGET_PE
10627 if (pe_test_res_file(&ehdr
, ret
)) {
10628 ret
= pe_load_res_file(s1
, fd
);
10632 /* as GNU ld, consider it is an ld script if not recognized */
10634 ret
= tcc_load_ldscript(s1
);
10636 error_noabort("unrecognized file type");
10651 int tcc_add_file(TCCState
*s
, const char *filename
)
10653 return tcc_add_file_internal(s
, filename
, AFF_PRINT_ERROR
);
10656 int tcc_add_library_path(TCCState
*s
, const char *pathname
)
10660 pathname1
= tcc_strdup(pathname
);
10661 dynarray_add((void ***)&s
->library_paths
, &s
->nb_library_paths
, pathname1
);
10665 /* find and load a dll. Return non zero if not found */
10666 /* XXX: add '-rpath' option support ? */
10667 static int tcc_add_dll(TCCState
*s
, const char *filename
, int flags
)
10672 for(i
= 0; i
< s
->nb_library_paths
; i
++) {
10673 snprintf(buf
, sizeof(buf
), "%s/%s",
10674 s
->library_paths
[i
], filename
);
10675 if (tcc_add_file_internal(s
, buf
, flags
) == 0)
10681 /* the library name is the same as the argument of the '-l' option */
10682 int tcc_add_library(TCCState
*s
, const char *libraryname
)
10687 /* first we look for the dynamic library if not static linking */
10688 if (!s
->static_link
) {
10689 #ifdef TCC_TARGET_PE
10690 snprintf(buf
, sizeof(buf
), "%s.def", libraryname
);
10692 snprintf(buf
, sizeof(buf
), "lib%s.so", libraryname
);
10694 if (tcc_add_dll(s
, buf
, 0) == 0)
10698 /* then we look for the static library */
10699 for(i
= 0; i
< s
->nb_library_paths
; i
++) {
10700 snprintf(buf
, sizeof(buf
), "%s/lib%s.a",
10701 s
->library_paths
[i
], libraryname
);
10702 if (tcc_add_file_internal(s
, buf
, 0) == 0)
10708 int tcc_add_symbol(TCCState
*s
, const char *name
, unsigned long val
)
10710 add_elf_sym(symtab_section
, val
, 0,
10711 ELFW(ST_INFO
)(STB_GLOBAL
, STT_NOTYPE
), 0,
10716 int tcc_set_output_type(TCCState
*s
, int output_type
)
10720 s
->output_type
= output_type
;
10722 if (!s
->nostdinc
) {
10723 /* default include paths */
10724 /* XXX: reverse order needed if -isystem support */
10725 #ifndef TCC_TARGET_PE
10726 tcc_add_sysinclude_path(s
, CONFIG_SYSROOT
"/usr/local/include");
10727 tcc_add_sysinclude_path(s
, CONFIG_SYSROOT
"/usr/include");
10729 snprintf(buf
, sizeof(buf
), "%s/include", tcc_lib_path
);
10730 tcc_add_sysinclude_path(s
, buf
);
10731 #ifdef TCC_TARGET_PE
10732 snprintf(buf
, sizeof(buf
), "%s/include/winapi", tcc_lib_path
);
10733 tcc_add_sysinclude_path(s
, buf
);
10737 /* if bound checking, then add corresponding sections */
10738 #ifdef CONFIG_TCC_BCHECK
10739 if (do_bounds_check
) {
10740 /* define symbol */
10741 tcc_define_symbol(s
, "__BOUNDS_CHECKING_ON", NULL
);
10742 /* create bounds sections */
10743 bounds_section
= new_section(s
, ".bounds",
10744 SHT_PROGBITS
, SHF_ALLOC
);
10745 lbounds_section
= new_section(s
, ".lbounds",
10746 SHT_PROGBITS
, SHF_ALLOC
);
10750 if (s
->char_is_unsigned
) {
10751 tcc_define_symbol(s
, "__CHAR_UNSIGNED__", NULL
);
10754 /* add debug sections */
10757 stab_section
= new_section(s
, ".stab", SHT_PROGBITS
, 0);
10758 stab_section
->sh_entsize
= sizeof(Stab_Sym
);
10759 stabstr_section
= new_section(s
, ".stabstr", SHT_STRTAB
, 0);
10760 put_elf_str(stabstr_section
, "");
10761 stab_section
->link
= stabstr_section
;
10762 /* put first entry */
10763 put_stabs("", 0, 0, 0, 0);
10766 /* add libc crt1/crti objects */
10767 #ifndef TCC_TARGET_PE
10768 if ((output_type
== TCC_OUTPUT_EXE
|| output_type
== TCC_OUTPUT_DLL
) &&
10770 if (output_type
!= TCC_OUTPUT_DLL
)
10771 tcc_add_file(s
, CONFIG_TCC_CRT_PREFIX
"/crt1.o");
10772 tcc_add_file(s
, CONFIG_TCC_CRT_PREFIX
"/crti.o");
10776 #ifdef TCC_TARGET_PE
10777 snprintf(buf
, sizeof(buf
), "%s/lib", tcc_lib_path
);
10778 tcc_add_library_path(s
, buf
);
10784 #define WD_ALL 0x0001 /* warning is activated when using -Wall */
10785 #define FD_INVERT 0x0002 /* invert value before storing */
10787 typedef struct FlagDef
{
10793 static const FlagDef warning_defs
[] = {
10794 { offsetof(TCCState
, warn_unsupported
), 0, "unsupported" },
10795 { offsetof(TCCState
, warn_write_strings
), 0, "write-strings" },
10796 { offsetof(TCCState
, warn_error
), 0, "error" },
10797 { offsetof(TCCState
, warn_implicit_function_declaration
), WD_ALL
,
10798 "implicit-function-declaration" },
10801 static int set_flag(TCCState
*s
, const FlagDef
*flags
, int nb_flags
,
10802 const char *name
, int value
)
10809 if (r
[0] == 'n' && r
[1] == 'o' && r
[2] == '-') {
10813 for(i
= 0, p
= flags
; i
< nb_flags
; i
++, p
++) {
10814 if (!strcmp(r
, p
->name
))
10819 if (p
->flags
& FD_INVERT
)
10821 *(int *)((uint8_t *)s
+ p
->offset
) = value
;
10826 /* set/reset a warning */
10827 int tcc_set_warning(TCCState
*s
, const char *warning_name
, int value
)
10832 if (!strcmp(warning_name
, "all")) {
10833 for(i
= 0, p
= warning_defs
; i
< countof(warning_defs
); i
++, p
++) {
10834 if (p
->flags
& WD_ALL
)
10835 *(int *)((uint8_t *)s
+ p
->offset
) = 1;
10839 return set_flag(s
, warning_defs
, countof(warning_defs
),
10840 warning_name
, value
);
10844 static const FlagDef flag_defs
[] = {
10845 { offsetof(TCCState
, char_is_unsigned
), 0, "unsigned-char" },
10846 { offsetof(TCCState
, char_is_unsigned
), FD_INVERT
, "signed-char" },
10847 { offsetof(TCCState
, nocommon
), FD_INVERT
, "common" },
10848 { offsetof(TCCState
, leading_underscore
), 0, "leading-underscore" },
10851 /* set/reset a flag */
10852 int tcc_set_flag(TCCState
*s
, const char *flag_name
, int value
)
10854 return set_flag(s
, flag_defs
, countof(flag_defs
),
10858 #if !defined(LIBTCC)
10860 static int64_t getclock_us(void)
10865 return (tb
.time
* 1000LL + tb
.millitm
) * 1000LL;
10868 gettimeofday(&tv
, NULL
);
10869 return tv
.tv_sec
* 1000000LL + tv
.tv_usec
;
10875 printf("tcc version " TCC_VERSION
" - Tiny C Compiler - Copyright (C) 2001-2006 Fabrice Bellard\n"
10876 "usage: tcc [-v] [-c] [-o outfile] [-Bdir] [-bench] [-Idir] [-Dsym[=val]] [-Usym]\n"
10877 " [-Wwarn] [-g] [-b] [-bt N] [-Ldir] [-llib] [-shared] [-soname name]\n"
10878 " [-static] [infile1 infile2...] [-run infile args...]\n"
10880 "General options:\n"
10881 " -v display current version, increase verbosity\n"
10882 " -c compile only - generate an object file\n"
10883 " -o outfile set output filename\n"
10884 " -Bdir set tcc internal library path\n"
10885 " -bench output compilation statistics\n"
10886 " -run run compiled source\n"
10887 " -fflag set or reset (with 'no-' prefix) 'flag' (see man page)\n"
10888 " -Wwarning set or reset (with 'no-' prefix) 'warning' (see man page)\n"
10889 " -w disable all warnings\n"
10890 "Preprocessor options:\n"
10891 " -E preprocess only\n"
10892 " -Idir add include path 'dir'\n"
10893 " -Dsym[=val] define 'sym' with value 'val'\n"
10894 " -Usym undefine 'sym'\n"
10895 "Linker options:\n"
10896 " -Ldir add library path 'dir'\n"
10897 " -llib link with dynamic or static library 'lib'\n"
10898 " -shared generate a shared library\n"
10899 " -soname set name for shared library to be used at runtime\n"
10900 " -static static linking\n"
10901 " -rdynamic export all global symbols to dynamic linker\n"
10902 " -r generate (relocatable) object file\n"
10903 "Debugger options:\n"
10904 " -g generate runtime debug info\n"
10905 #ifdef CONFIG_TCC_BCHECK
10906 " -b compile with built-in memory and bounds checker (implies -g)\n"
10908 " -bt N show N callers in stack traces\n"
10912 #define TCC_OPTION_HAS_ARG 0x0001
10913 #define TCC_OPTION_NOSEP 0x0002 /* cannot have space before option and arg */
10915 typedef struct TCCOption
{
10944 TCC_OPTION_nostdinc
,
10945 TCC_OPTION_nostdlib
,
10946 TCC_OPTION_print_search_dirs
,
10947 TCC_OPTION_rdynamic
,
10955 static const TCCOption tcc_options
[] = {
10956 { "h", TCC_OPTION_HELP
, 0 },
10957 { "?", TCC_OPTION_HELP
, 0 },
10958 { "I", TCC_OPTION_I
, TCC_OPTION_HAS_ARG
},
10959 { "D", TCC_OPTION_D
, TCC_OPTION_HAS_ARG
},
10960 { "U", TCC_OPTION_U
, TCC_OPTION_HAS_ARG
},
10961 { "L", TCC_OPTION_L
, TCC_OPTION_HAS_ARG
},
10962 { "B", TCC_OPTION_B
, TCC_OPTION_HAS_ARG
},
10963 { "l", TCC_OPTION_l
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10964 { "bench", TCC_OPTION_bench
, 0 },
10965 { "bt", TCC_OPTION_bt
, TCC_OPTION_HAS_ARG
},
10966 #ifdef CONFIG_TCC_BCHECK
10967 { "b", TCC_OPTION_b
, 0 },
10969 { "g", TCC_OPTION_g
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10970 { "c", TCC_OPTION_c
, 0 },
10971 { "static", TCC_OPTION_static
, 0 },
10972 { "shared", TCC_OPTION_shared
, 0 },
10973 { "soname", TCC_OPTION_soname
, TCC_OPTION_HAS_ARG
},
10974 { "o", TCC_OPTION_o
, TCC_OPTION_HAS_ARG
},
10975 { "run", TCC_OPTION_run
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10976 { "rdynamic", TCC_OPTION_rdynamic
, 0 },
10977 { "r", TCC_OPTION_r
, 0 },
10978 { "Wl,", TCC_OPTION_Wl
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10979 { "W", TCC_OPTION_W
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10980 { "O", TCC_OPTION_O
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10981 { "m", TCC_OPTION_m
, TCC_OPTION_HAS_ARG
},
10982 { "f", TCC_OPTION_f
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10983 { "nostdinc", TCC_OPTION_nostdinc
, 0 },
10984 { "nostdlib", TCC_OPTION_nostdlib
, 0 },
10985 { "print-search-dirs", TCC_OPTION_print_search_dirs
, 0 },
10986 { "v", TCC_OPTION_v
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10987 { "w", TCC_OPTION_w
, 0 },
10988 { "pipe", TCC_OPTION_pipe
, 0},
10989 { "E", TCC_OPTION_E
, 0},
10993 /* convert 'str' into an array of space separated strings */
10994 static int expand_args(char ***pargv
, const char *str
)
11003 while (is_space(*str
))
11008 while (*str
!= '\0' && !is_space(*str
))
11011 arg
= tcc_malloc(len
+ 1);
11012 memcpy(arg
, s1
, len
);
11014 dynarray_add((void ***)&argv
, &argc
, arg
);
11020 static char **files
;
11021 static int nb_files
, nb_libraries
;
11022 static int multiple_files
;
11023 static int print_search_dirs
;
11024 static int output_type
;
11025 static int reloc_output
;
11026 static const char *outfile
;
11028 int parse_args(TCCState
*s
, int argc
, char **argv
)
11031 const TCCOption
*popt
;
11032 const char *optarg
, *p1
, *r1
;
11036 while (optind
< argc
) {
11038 r
= argv
[optind
++];
11039 if (r
[0] != '-' || r
[1] == '\0') {
11040 /* add a new file */
11041 dynarray_add((void ***)&files
, &nb_files
, r
);
11042 if (!multiple_files
) {
11044 /* argv[0] will be this file */
11048 /* find option in table (match only the first chars */
11049 popt
= tcc_options
;
11053 error("invalid option -- '%s'", r
);
11066 if (popt
->flags
& TCC_OPTION_HAS_ARG
) {
11067 if (*r1
!= '\0' || (popt
->flags
& TCC_OPTION_NOSEP
)) {
11070 if (optind
>= argc
)
11071 error("argument to '%s' is missing", r
);
11072 optarg
= argv
[optind
++];
11080 switch(popt
->index
) {
11081 case TCC_OPTION_HELP
:
11085 if (tcc_add_include_path(s
, optarg
) < 0)
11086 error("too many include paths");
11091 sym
= (char *)optarg
;
11092 value
= strchr(sym
, '=');
11097 tcc_define_symbol(s
, sym
, value
);
11101 tcc_undefine_symbol(s
, optarg
);
11104 tcc_add_library_path(s
, optarg
);
11107 /* set tcc utilities path (mainly for tcc development) */
11108 tcc_lib_path
= optarg
;
11111 dynarray_add((void ***)&files
, &nb_files
, r
);
11114 case TCC_OPTION_bench
:
11117 case TCC_OPTION_bt
:
11118 num_callers
= atoi(optarg
);
11120 #ifdef CONFIG_TCC_BCHECK
11122 do_bounds_check
= 1;
11130 multiple_files
= 1;
11131 output_type
= TCC_OUTPUT_OBJ
;
11133 case TCC_OPTION_static
:
11134 s
->static_link
= 1;
11136 case TCC_OPTION_shared
:
11137 output_type
= TCC_OUTPUT_DLL
;
11139 case TCC_OPTION_soname
:
11140 s
->soname
= optarg
;
11143 multiple_files
= 1;
11147 /* generate a .o merging several output files */
11149 output_type
= TCC_OUTPUT_OBJ
;
11151 case TCC_OPTION_nostdinc
:
11154 case TCC_OPTION_nostdlib
:
11157 case TCC_OPTION_print_search_dirs
:
11158 print_search_dirs
= 1;
11160 case TCC_OPTION_run
:
11164 argc1
= expand_args(&argv1
, optarg
);
11166 parse_args(s
, argc1
, argv1
);
11168 multiple_files
= 0;
11169 output_type
= TCC_OUTPUT_MEMORY
;
11174 if (0 == verbose
++)
11175 printf("tcc version %s\n", TCC_VERSION
);
11176 } while (*optarg
++ == 'v');
11179 if (tcc_set_flag(s
, optarg
, 1) < 0 && s
->warn_unsupported
)
11180 goto unsupported_option
;
11183 if (tcc_set_warning(s
, optarg
, 1) < 0 &&
11184 s
->warn_unsupported
)
11185 goto unsupported_option
;
11190 case TCC_OPTION_rdynamic
:
11193 case TCC_OPTION_Wl
:
11196 if (strstart(optarg
, "-Ttext,", &p
)) {
11197 s
->text_addr
= strtoul(p
, NULL
, 16);
11198 s
->has_text_addr
= 1;
11199 } else if (strstart(optarg
, "--oformat,", &p
)) {
11200 if (strstart(p
, "elf32-", NULL
)) {
11201 s
->output_format
= TCC_OUTPUT_FORMAT_ELF
;
11202 } else if (!strcmp(p
, "binary")) {
11203 s
->output_format
= TCC_OUTPUT_FORMAT_BINARY
;
11205 #ifdef TCC_TARGET_COFF
11206 if (!strcmp(p
, "coff")) {
11207 s
->output_format
= TCC_OUTPUT_FORMAT_COFF
;
11211 error("target %s not found", p
);
11214 error("unsupported linker option '%s'", optarg
);
11219 output_type
= TCC_OUTPUT_PREPROCESS
;
11222 if (s
->warn_unsupported
) {
11223 unsupported_option
:
11224 warning("unsupported option '%s'", r
);
11233 int main(int argc
, char **argv
)
11237 int nb_objfiles
, ret
, optind
;
11238 char objfilename
[1024];
11239 int64_t start_time
= 0;
11242 tcc_lib_path
= w32_tcc_lib_path();
11246 output_type
= TCC_OUTPUT_EXE
;
11248 multiple_files
= 1;
11253 print_search_dirs
= 0;
11256 optind
= parse_args(s
, argc
- 1, argv
+ 1);
11257 if (print_search_dirs
) {
11258 /* enough for Linux kernel */
11259 printf("install: %s/\n", tcc_lib_path
);
11262 if (optind
== 0 || nb_files
== 0) {
11263 if (optind
&& verbose
)
11269 nb_objfiles
= nb_files
- nb_libraries
;
11271 /* if outfile provided without other options, we output an
11273 if (outfile
&& output_type
== TCC_OUTPUT_MEMORY
)
11274 output_type
= TCC_OUTPUT_EXE
;
11276 /* check -c consistency : only single file handled. XXX: checks file type */
11277 if (output_type
== TCC_OUTPUT_OBJ
&& !reloc_output
) {
11278 /* accepts only a single input file */
11279 if (nb_objfiles
!= 1)
11280 error("cannot specify multiple files with -c");
11281 if (nb_libraries
!= 0)
11282 error("cannot specify libraries with -c");
11286 if (output_type
== TCC_OUTPUT_PREPROCESS
) {
11288 s
->outfile
= stdout
;
11290 s
->outfile
= fopen(outfile
, "w");
11292 error("could not open '%s", outfile
);
11294 } else if (output_type
!= TCC_OUTPUT_MEMORY
) {
11296 /* compute default outfile name */
11299 strcmp(files
[0], "-") == 0 ? "a" : tcc_basename(files
[0]);
11300 pstrcpy(objfilename
, sizeof(objfilename
), name
);
11301 ext
= tcc_fileextension(objfilename
);
11302 #ifdef TCC_TARGET_PE
11303 if (output_type
== TCC_OUTPUT_DLL
)
11304 strcpy(ext
, ".dll");
11306 if (output_type
== TCC_OUTPUT_EXE
)
11307 strcpy(ext
, ".exe");
11310 if (output_type
== TCC_OUTPUT_OBJ
&& !reloc_output
&& *ext
)
11313 pstrcpy(objfilename
, sizeof(objfilename
), "a.out");
11314 outfile
= objfilename
;
11319 start_time
= getclock_us();
11322 tcc_set_output_type(s
, output_type
);
11324 /* compile or add each files or library */
11325 for(i
= 0; i
< nb_files
&& ret
== 0; i
++) {
11326 const char *filename
;
11328 filename
= files
[i
];
11329 if (output_type
== TCC_OUTPUT_PREPROCESS
) {
11330 if (tcc_add_file_internal(s
, filename
,
11331 AFF_PRINT_ERROR
| AFF_PREPROCESS
) < 0)
11333 } else if (filename
[0] == '-' && filename
[1]) {
11334 if (tcc_add_library(s
, filename
+ 2) < 0)
11335 error("cannot find %s", filename
);
11338 printf("-> %s\n", filename
);
11339 if (tcc_add_file(s
, filename
) < 0)
11344 /* free all files */
11352 total_time
= (double)(getclock_us() - start_time
) / 1000000.0;
11353 if (total_time
< 0.001)
11354 total_time
= 0.001;
11355 if (total_bytes
< 1)
11357 printf("%d idents, %d lines, %d bytes, %0.3f s, %d lines/s, %0.1f MB/s\n",
11358 tok_ident
- TOK_IDENT
, total_lines
, total_bytes
,
11359 total_time
, (int)(total_lines
/ total_time
),
11360 total_bytes
/ total_time
/ 1000000.0);
11363 if (s
->output_type
== TCC_OUTPUT_PREPROCESS
) {
11365 fclose(s
->outfile
);
11366 } else if (s
->output_type
== TCC_OUTPUT_MEMORY
) {
11367 ret
= tcc_run(s
, argc
- optind
, argv
+ optind
);
11369 ret
= tcc_output_file(s
, outfile
) ? 1 : 0;
11371 /* XXX: cannot do it with bound checking because of the malloc hooks */
11372 if (!do_bounds_check
)
11377 printf("memory: %d bytes, max = %d bytes\n", mem_cur_size
, mem_max_size
);