2 * TCC - Tiny C Compiler
4 * Copyright (c) 2001-2004 Fabrice Bellard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 #define CONFIG_TCC_STATIC
42 #include <sys/timeb.h>
47 #include <sys/ucontext.h>
51 #endif /* !CONFIG_TCCBOOT */
68 /* preprocessor debug */
70 /* include file debug */
78 /* target selection */
79 //#define TCC_TARGET_I386 /* i386 code generator */
80 //#define TCC_TARGET_ARM /* ARMv4 code generator */
81 //#define TCC_TARGET_C67 /* TMS320C67xx code generator */
82 //#define TCC_TARGET_X86_64 /* x86-64 code generator */
84 /* default target is I386 */
85 #if !defined(TCC_TARGET_I386) && !defined(TCC_TARGET_ARM) && \
86 !defined(TCC_TARGET_C67) && !defined(TCC_TARGET_X86_64)
87 #define TCC_TARGET_I386
90 #if !defined(_WIN32) && !defined(TCC_UCLIBC) && !defined(TCC_TARGET_ARM) && \
91 !defined(TCC_TARGET_C67) && !defined(TCC_TARGET_X86_64)
92 #define CONFIG_TCC_BCHECK /* enable bound checking code */
95 #if defined(_WIN32) && !defined(TCC_TARGET_PE)
96 #define CONFIG_TCC_STATIC
99 /* define it to include assembler support */
100 #if !defined(TCC_TARGET_ARM) && !defined(TCC_TARGET_C67) && \
101 !defined(TCC_TARGET_X86_64)
102 #define CONFIG_TCC_ASM
105 /* object format selection */
106 #if defined(TCC_TARGET_C67)
107 #define TCC_TARGET_COFF
116 /* path to find crt1.o, crti.o and crtn.o. Only needed when generating
117 executables or dlls */
118 #define CONFIG_TCC_CRT_PREFIX CONFIG_SYSROOT "/usr/lib"
120 #define INCLUDE_STACK_SIZE 32
121 #define IFDEF_STACK_SIZE 64
122 #define VSTACK_SIZE 256
123 #define STRING_MAX_SIZE 1024
124 #define PACK_STACK_SIZE 8
126 #define TOK_HASH_SIZE 8192 /* must be a power of two */
127 #define TOK_ALLOC_INCR 512 /* must be a power of two */
128 #define TOK_MAX_SIZE 4 /* token max size in int unit when stored in string */
130 /* token symbol management */
131 typedef struct TokenSym
{
132 struct TokenSym
*hash_next
;
133 struct Sym
*sym_define
; /* direct pointer to define */
134 struct Sym
*sym_label
; /* direct pointer to label */
135 struct Sym
*sym_struct
; /* direct pointer to structure */
136 struct Sym
*sym_identifier
; /* direct pointer to identifier */
137 int tok
; /* token number */
143 typedef unsigned short nwchar_t
;
145 typedef int nwchar_t
;
148 typedef struct CString
{
149 int size
; /* size in bytes */
150 void *data
; /* either 'char *' or 'nwchar_t *' */
152 void *data_allocated
; /* if non NULL, data has been malloced */
155 /* type definition */
156 typedef struct CType
{
162 typedef union CValue
{
168 unsigned int ul
; /* address (should be unsigned long on 64 bit cpu) */
170 unsigned long long ull
;
171 struct CString
*cstr
;
177 typedef struct SValue
{
178 CType type
; /* type */
179 unsigned short r
; /* register + flags */
180 unsigned short r2
; /* second register, used for 'long long'
181 type. If not used, set to VT_CONST */
182 CValue c
; /* constant, if VT_CONST */
183 struct Sym
*sym
; /* symbol, if (VT_SYM | VT_CONST) */
186 /* symbol management */
188 int v
; /* symbol token */
189 long r
; /* associated register */
190 long c
; /* associated number */
191 CType type
; /* associated type */
192 struct Sym
*next
; /* next related symbol */
193 struct Sym
*prev
; /* prev symbol in stack */
194 struct Sym
*prev_tok
; /* previous symbol for this token */
197 /* section definition */
198 /* XXX: use directly ELF structure for parameters ? */
199 /* special flag to indicate that the section should not be linked to
201 #define SHF_PRIVATE 0x80000000
203 typedef struct Section
{
204 unsigned long data_offset
; /* current data offset */
205 unsigned char *data
; /* section data */
206 unsigned long data_allocated
; /* used for realloc() handling */
207 int sh_name
; /* elf section name (only used during output) */
208 int sh_num
; /* elf section number */
209 int sh_type
; /* elf section type */
210 int sh_flags
; /* elf section flags */
211 int sh_info
; /* elf section info */
212 int sh_addralign
; /* elf section alignment */
213 int sh_entsize
; /* elf entry size */
214 unsigned long sh_size
; /* section size (only used during output) */
215 unsigned long sh_addr
; /* address at which the section is relocated */
216 unsigned long sh_offset
; /* file offset */
217 int nb_hashed_syms
; /* used to resize the hash table */
218 struct Section
*link
; /* link to another section */
219 struct Section
*reloc
; /* corresponding section for relocation, if any */
220 struct Section
*hash
; /* hash table for symbols */
221 struct Section
*next
;
222 char name
[1]; /* section name */
225 typedef struct DLLReference
{
231 /* GNUC attribute definition */
232 typedef struct AttributeDef
{
236 int func_attr
; /* calling convention, exports, ... */
239 /* -------------------------------------------------- */
240 /* gr: wrappers for casting sym->r for other purposes */
248 #define FUNC_CALL(r) (((func_attr_t*)&(r))->func_call)
249 #define FUNC_EXPORT(r) (((func_attr_t*)&(r))->func_export)
250 #define FUNC_ARGS(r) (((func_attr_t*)&(r))->func_args)
251 #define INLINE_DEF(r) (*(int **)&(r))
252 /* -------------------------------------------------- */
254 #define SYM_STRUCT 0x40000000 /* struct/union/enum symbol space */
255 #define SYM_FIELD 0x20000000 /* struct/union field symbol space */
256 #define SYM_FIRST_ANOM 0x10000000 /* first anonymous sym */
258 /* stored in 'Sym.c' field */
259 #define FUNC_NEW 1 /* ansi function prototype */
260 #define FUNC_OLD 2 /* old function prototype */
261 #define FUNC_ELLIPSIS 3 /* ansi function prototype with ... */
263 /* stored in 'Sym.r' field */
264 #define FUNC_CDECL 0 /* standard c call */
265 #define FUNC_STDCALL 1 /* pascal c call */
266 #define FUNC_FASTCALL1 2 /* first param in %eax */
267 #define FUNC_FASTCALL2 3 /* first parameters in %eax, %edx */
268 #define FUNC_FASTCALL3 4 /* first parameter in %eax, %edx, %ecx */
269 #define FUNC_FASTCALLW 5 /* first parameter in %ecx, %edx */
271 /* field 'Sym.t' for macros */
272 #define MACRO_OBJ 0 /* object like macro */
273 #define MACRO_FUNC 1 /* function like macro */
275 /* field 'Sym.r' for C labels */
276 #define LABEL_DEFINED 0 /* label is defined */
277 #define LABEL_FORWARD 1 /* label is forward defined */
278 #define LABEL_DECLARED 2 /* label is declared but never used */
280 /* type_decl() types */
281 #define TYPE_ABSTRACT 1 /* type without variable */
282 #define TYPE_DIRECT 2 /* type with variable */
284 #define IO_BUF_SIZE 8192
286 typedef struct BufferedFile
{
290 int line_num
; /* current line number - here to simplify code */
291 int ifndef_macro
; /* #ifndef macro / #endif search */
292 int ifndef_macro_saved
; /* saved ifndef_macro */
293 int *ifdef_stack_ptr
; /* ifdef_stack value at the start of the file */
294 char inc_type
; /* type of include */
295 char inc_filename
[512]; /* filename specified by the user */
296 char filename
[1024]; /* current filename - here to simplify code */
297 unsigned char buffer
[IO_BUF_SIZE
+ 1]; /* extra size for CH_EOB char */
300 #define CH_EOB '\\' /* end of buffer or '\0' char in file */
301 #define CH_EOF (-1) /* end of file */
303 /* parsing state (used to save parser state to reparse part of the
304 source several times) */
305 typedef struct ParseState
{
312 /* used to record tokens */
313 typedef struct TokenString
{
320 /* include file cache, used to find files faster and also to eliminate
321 inclusion if the include file is protected by #ifndef ... #endif */
322 typedef struct CachedInclude
{
324 int hash_next
; /* -1 if none */
325 char type
; /* '"' or '>' to give include type */
326 char filename
[1]; /* path specified in #include */
329 #define CACHED_INCLUDES_HASH_SIZE 512
332 static struct BufferedFile
*file
;
335 static CString tokcstr
; /* current parsed string, if any */
336 /* additional informations about token */
337 static int tok_flags
;
338 #define TOK_FLAG_BOL 0x0001 /* beginning of line before */
339 #define TOK_FLAG_BOF 0x0002 /* beginning of file before */
340 #define TOK_FLAG_ENDIF 0x0004 /* a endif was found matching starting #ifdef */
341 #define TOK_FLAG_EOF 0x0008 /* end of file */
343 static int *macro_ptr
, *macro_ptr_allocated
;
344 static int *unget_saved_macro_ptr
;
345 static int unget_saved_buffer
[TOK_MAX_SIZE
+ 1];
346 static int unget_buffer_enabled
;
347 static int parse_flags
;
348 #define PARSE_FLAG_PREPROCESS 0x0001 /* activate preprocessing */
349 #define PARSE_FLAG_TOK_NUM 0x0002 /* return numbers instead of TOK_PPNUM */
350 #define PARSE_FLAG_LINEFEED 0x0004 /* line feed is returned as a
351 token. line feed is also
353 #define PARSE_FLAG_ASM_COMMENTS 0x0008 /* '#' can be used for line comment */
355 static Section
*text_section
, *data_section
, *bss_section
; /* predefined sections */
356 static Section
*cur_text_section
; /* current section where function code is
358 #ifdef CONFIG_TCC_ASM
359 static Section
*last_text_section
; /* to handle .previous asm directive */
361 /* bound check related sections */
362 static Section
*bounds_section
; /* contains global data bound description */
363 static Section
*lbounds_section
; /* contains local data bound description */
364 /* symbol sections */
365 static Section
*symtab_section
, *strtab_section
;
368 static Section
*stab_section
, *stabstr_section
;
370 /* loc : local variable index
371 ind : output code index
373 anon_sym: anonymous symbol index
375 static int rsym
, anon_sym
, ind
, loc
;
376 /* expression generation modifiers */
377 static int const_wanted
; /* true if constant wanted */
378 static int nocode_wanted
; /* true if no code generation wanted for an expression */
379 static int global_expr
; /* true if compound literals must be allocated
380 globally (used during initializers parsing */
381 static CType func_vt
; /* current function return type (used by return
384 static int last_line_num
, last_ind
, func_ind
; /* debug last line number and pc */
385 static int tok_ident
;
386 static TokenSym
**table_ident
;
387 static TokenSym
*hash_ident
[TOK_HASH_SIZE
];
388 static char token_buf
[STRING_MAX_SIZE
+ 1];
389 static char *funcname
;
390 static Sym
*global_stack
, *local_stack
;
391 static Sym
*define_stack
;
392 static Sym
*global_label_stack
, *local_label_stack
;
393 /* symbol allocator */
394 #define SYM_POOL_NB (8192 / sizeof(Sym))
395 static Sym
*sym_free_first
;
396 static void **sym_pools
;
397 static int nb_sym_pools
;
399 static SValue vstack
[VSTACK_SIZE
], *vtop
;
400 /* some predefined types */
401 static CType char_pointer_type
, func_old_type
, int_type
;
402 /* true if isid(c) || isnum(c) */
403 static unsigned char isidnum_table
[256-CH_EOF
];
405 /* display some information during compilation */
406 static int verbose
= 0;
408 /* compile with debug symbol (and use them if error during execution) */
409 static int do_debug
= 0;
411 /* compile with built-in memory and bounds checker */
412 static int do_bounds_check
= 0;
414 /* display benchmark infos */
416 static int do_bench
= 0;
418 static int total_lines
;
419 static int total_bytes
;
421 /* use GNU C extensions */
422 static int gnu_ext
= 1;
424 /* use Tiny C extensions */
425 static int tcc_ext
= 1;
427 /* max number of callers shown if error */
428 static int num_callers
= 6;
429 static const char **rt_bound_error_msg
;
431 /* XXX: get rid of this ASAP */
432 static struct TCCState
*tcc_state
;
434 /* give the path of the tcc libraries */
435 static const char *tcc_lib_path
= CONFIG_TCCDIR
;
440 BufferedFile
**include_stack_ptr
;
441 int *ifdef_stack_ptr
;
443 /* include file handling */
444 char **include_paths
;
445 int nb_include_paths
;
446 char **sysinclude_paths
;
447 int nb_sysinclude_paths
;
448 CachedInclude
**cached_includes
;
449 int nb_cached_includes
;
451 char **library_paths
;
452 int nb_library_paths
;
454 /* array of all loaded dlls (including those referenced by loaded
456 DLLReference
**loaded_dlls
;
461 int nb_sections
; /* number of sections, including first dummy section */
466 unsigned long *got_offsets
;
468 /* give the correspondance from symtab indexes to dynsym indexes */
469 int *symtab_to_dynsym
;
471 /* temporary dynamic symbol sections (for dll loading) */
472 Section
*dynsymtab_section
;
473 /* exported dynamic symbol section */
476 int nostdinc
; /* if true, no standard headers are added */
477 int nostdlib
; /* if true, no standard libraries are added */
479 int nocommon
; /* if true, do not use common symbols for .bss data */
481 /* if true, static linking is performed */
484 /* soname as specified on the command line (-soname) */
487 /* if true, all symbols are exported */
490 /* if true, only link in referenced objects from archive */
493 /* address of text section */
494 unsigned long text_addr
;
497 /* output format, see TCC_OUTPUT_FORMAT_xxx */
500 /* C language options */
501 int char_is_unsigned
;
502 int leading_underscore
;
504 /* warning switches */
505 int warn_write_strings
;
506 int warn_unsupported
;
509 int warn_implicit_function_declaration
;
513 void (*error_func
)(void *opaque
, const char *msg
);
514 int error_set_jmp_enabled
;
515 jmp_buf error_jmp_buf
;
518 /* tiny assembler state */
521 /* see include_stack_ptr */
522 BufferedFile
*include_stack
[INCLUDE_STACK_SIZE
];
524 /* see ifdef_stack_ptr */
525 int ifdef_stack
[IFDEF_STACK_SIZE
];
527 /* see cached_includes */
528 int cached_includes_hash
[CACHED_INCLUDES_HASH_SIZE
];
531 int pack_stack
[PACK_STACK_SIZE
];
534 /* output file for preprocessing */
537 #ifdef TCC_TARGET_X86_64
538 /* buffer to store jump tables */
544 /* The current value can be: */
545 #define VT_VALMASK 0x00ff
546 #define VT_CONST 0x00f0 /* constant in vc
547 (must be first non register value) */
548 #define VT_LLOCAL 0x00f1 /* lvalue, offset on stack */
549 #define VT_LOCAL 0x00f2 /* offset on stack */
550 #define VT_CMP 0x00f3 /* the value is stored in processor flags (in vc) */
551 #define VT_JMP 0x00f4 /* value is the consequence of jmp true (even) */
552 #define VT_JMPI 0x00f5 /* value is the consequence of jmp false (odd) */
553 #define VT_LVAL 0x0100 /* var is an lvalue */
554 #define VT_SYM 0x0200 /* a symbol value is added */
555 #define VT_MUSTCAST 0x0400 /* value must be casted to be correct (used for
556 char/short stored in integer registers) */
557 #define VT_MUSTBOUND 0x0800 /* bound checking must be done before
558 dereferencing value */
559 #define VT_BOUNDED 0x8000 /* value is bounded. The address of the
560 bounding function call point is in vc */
561 #define VT_LVAL_BYTE 0x1000 /* lvalue is a byte */
562 #define VT_LVAL_SHORT 0x2000 /* lvalue is a short */
563 #define VT_LVAL_UNSIGNED 0x4000 /* lvalue is unsigned */
564 #define VT_LVAL_TYPE (VT_LVAL_BYTE | VT_LVAL_SHORT | VT_LVAL_UNSIGNED)
567 #define VT_INT 0 /* integer type */
568 #define VT_BYTE 1 /* signed byte type */
569 #define VT_SHORT 2 /* short type */
570 #define VT_VOID 3 /* void type */
571 #define VT_PTR 4 /* pointer */
572 #define VT_ENUM 5 /* enum definition */
573 #define VT_FUNC 6 /* function type */
574 #define VT_STRUCT 7 /* struct/union definition */
575 #define VT_FLOAT 8 /* IEEE float */
576 #define VT_DOUBLE 9 /* IEEE double */
577 #define VT_LDOUBLE 10 /* IEEE long double */
578 #define VT_BOOL 11 /* ISOC99 boolean type */
579 #define VT_LLONG 12 /* 64 bit integer */
580 #define VT_LONG 13 /* long integer (NEVER USED as type, only
582 #define VT_BTYPE 0x000f /* mask for basic type */
583 #define VT_UNSIGNED 0x0010 /* unsigned type */
584 #define VT_ARRAY 0x0020 /* array type (also has VT_PTR) */
585 #define VT_BITFIELD 0x0040 /* bitfield modifier */
586 #define VT_CONSTANT 0x0800 /* const modifier */
587 #define VT_VOLATILE 0x1000 /* volatile modifier */
588 #define VT_SIGNED 0x2000 /* signed type */
591 #define VT_EXTERN 0x00000080 /* extern definition */
592 #define VT_STATIC 0x00000100 /* static variable */
593 #define VT_TYPEDEF 0x00000200 /* typedef definition */
594 #define VT_INLINE 0x00000400 /* inline definition */
596 #define VT_STRUCT_SHIFT 16 /* shift for bitfield shift values */
598 /* type mask (except storage) */
599 #define VT_STORAGE (VT_EXTERN | VT_STATIC | VT_TYPEDEF | VT_INLINE)
600 #define VT_TYPE (~(VT_STORAGE))
604 /* warning: the following compare tokens depend on i386 asm code */
611 #define TOK_Nset 0x98
612 #define TOK_Nclear 0x99
618 #define TOK_LAND 0xa0
622 #define TOK_MID 0xa3 /* inc/dec, to void constant */
624 #define TOK_UDIV 0xb0 /* unsigned division */
625 #define TOK_UMOD 0xb1 /* unsigned modulo */
626 #define TOK_PDIV 0xb2 /* fast division with undefined rounding for pointers */
627 #define TOK_CINT 0xb3 /* number in tokc */
628 #define TOK_CCHAR 0xb4 /* char constant in tokc */
629 #define TOK_STR 0xb5 /* pointer to string in tokc */
630 #define TOK_TWOSHARPS 0xb6 /* ## preprocessing token */
631 #define TOK_LCHAR 0xb7
632 #define TOK_LSTR 0xb8
633 #define TOK_CFLOAT 0xb9 /* float constant */
634 #define TOK_LINENUM 0xba /* line number info */
635 #define TOK_CDOUBLE 0xc0 /* double constant */
636 #define TOK_CLDOUBLE 0xc1 /* long double constant */
637 #define TOK_UMULL 0xc2 /* unsigned 32x32 -> 64 mul */
638 #define TOK_ADDC1 0xc3 /* add with carry generation */
639 #define TOK_ADDC2 0xc4 /* add with carry use */
640 #define TOK_SUBC1 0xc5 /* add with carry generation */
641 #define TOK_SUBC2 0xc6 /* add with carry use */
642 #define TOK_CUINT 0xc8 /* unsigned int constant */
643 #define TOK_CLLONG 0xc9 /* long long constant */
644 #define TOK_CULLONG 0xca /* unsigned long long constant */
645 #define TOK_ARROW 0xcb
646 #define TOK_DOTS 0xcc /* three dots */
647 #define TOK_SHR 0xcd /* unsigned shift right */
648 #define TOK_PPNUM 0xce /* preprocessor number */
650 #define TOK_SHL 0x01 /* shift left */
651 #define TOK_SAR 0x02 /* signed shift right */
653 /* assignement operators : normal operator or 0x80 */
654 #define TOK_A_MOD 0xa5
655 #define TOK_A_AND 0xa6
656 #define TOK_A_MUL 0xaa
657 #define TOK_A_ADD 0xab
658 #define TOK_A_SUB 0xad
659 #define TOK_A_DIV 0xaf
660 #define TOK_A_XOR 0xde
661 #define TOK_A_OR 0xfc
662 #define TOK_A_SHL 0x81
663 #define TOK_A_SAR 0x82
666 #define offsetof(type, field) ((size_t) &((type *)0)->field)
670 #define countof(tab) (sizeof(tab) / sizeof((tab)[0]))
673 /* WARNING: the content of this string encodes token numbers */
674 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";
676 #define TOK_EOF (-1) /* end of file */
677 #define TOK_LINEFEED 10 /* line feed */
679 /* all identificators and strings have token above that */
680 #define TOK_IDENT 256
682 /* only used for i386 asm opcodes definitions */
683 #define DEF_ASM(x) DEF(TOK_ASM_ ## x, #x)
686 DEF(TOK_ASM_ ## x ## b, #x "b") \
687 DEF(TOK_ASM_ ## x ## w, #x "w") \
688 DEF(TOK_ASM_ ## x ## l, #x "l") \
689 DEF(TOK_ASM_ ## x, #x)
692 DEF(TOK_ASM_ ## x ## w, #x "w") \
693 DEF(TOK_ASM_ ## x ## l, #x "l") \
694 DEF(TOK_ASM_ ## x, #x)
697 DEF(TOK_ASM_ ## f ## x ## s, "f" #x "s") \
698 DEF(TOK_ASM_ ## fi ## x ## l, "fi" #x "l") \
699 DEF(TOK_ASM_ ## f ## x ## l, "f" #x "l") \
700 DEF(TOK_ASM_ ## fi ## x ## s, "fi" #x "s")
703 DEF(TOK_ASM_ ## f ## x, "f" #x ) \
704 DEF(TOK_ASM_ ## f ## x ## p, "f" #x "p") \
707 #define DEF_ASMTEST(x) \
739 #define TOK_ASM_int TOK_INT
742 TOK_LAST
= TOK_IDENT
- 1,
743 #define DEF(id, str) id,
748 static const char tcc_keywords
[] =
749 #define DEF(id, str) str "\0"
754 #define TOK_UIDENT TOK_DEFINE
757 #define snprintf _snprintf
758 #define vsnprintf _vsnprintf
760 #define strtold (long double)strtod
761 #define strtof (float)strtod
762 #define strtoll (long long)strtol
764 #elif defined(TCC_UCLIBC) || defined(__FreeBSD__) || defined(__DragonFly__) \
765 || defined(__OpenBSD__)
766 /* currently incorrect */
767 long double strtold(const char *nptr
, char **endptr
)
769 return (long double)strtod(nptr
, endptr
);
771 float strtof(const char *nptr
, char **endptr
)
773 return (float)strtod(nptr
, endptr
);
776 /* XXX: need to define this to use them in non ISOC99 context */
777 extern float strtof (const char *__nptr
, char **__endptr
);
778 extern long double strtold (const char *__nptr
, char **__endptr
);
781 static char *pstrcpy(char *buf
, int buf_size
, const char *s
);
782 static char *pstrcat(char *buf
, int buf_size
, const char *s
);
783 static char *tcc_basename(const char *name
);
784 static char *tcc_fileextension (const char *p
);
786 static void next(void);
787 static void next_nomacro(void);
788 static void parse_expr_type(CType
*type
);
789 static void expr_type(CType
*type
);
790 static void unary_type(CType
*type
);
791 static void block(int *bsym
, int *csym
, int *case_sym
, int *def_sym
,
792 int case_reg
, int is_expr
);
793 static int expr_const(void);
794 static void expr_eq(void);
795 static void gexpr(void);
796 static void gen_inline_functions(void);
797 static void decl(int l
);
798 static void decl_initializer(CType
*type
, Section
*sec
, unsigned long c
,
799 int first
, int size_only
);
800 static void decl_initializer_alloc(CType
*type
, AttributeDef
*ad
, int r
,
801 int has_init
, int v
, int scope
);
803 void gv2(int rc1
, int rc2
);
804 void move_reg(int r
, int s
);
805 void save_regs(int n
);
806 void save_reg(int r
);
811 int get_reg_ex(int rc
,int rc2
);
814 struct macro_level
*prev
;
818 static void macro_subst(TokenString
*tok_str
, Sym
**nested_list
,
819 const int *macro_str
, struct macro_level
**can_read_stream
);
821 void force_charshort_cast(int t
);
822 static void gen_cast(CType
*type
);
824 static Sym
*sym_find(int v
);
825 static Sym
*sym_push(int v
, CType
*type
, int r
, int c
);
828 static int type_size(CType
*type
, int *a
);
829 static inline CType
*pointed_type(CType
*type
);
830 static int pointed_size(CType
*type
);
831 static int lvalue_type(int t
);
832 static int parse_btype(CType
*type
, AttributeDef
*ad
);
833 static void type_decl(CType
*type
, AttributeDef
*ad
, int *v
, int td
);
834 static int compare_types(CType
*type1
, CType
*type2
, int unqualified
);
835 static int is_compatible_types(CType
*type1
, CType
*type2
);
836 static int is_compatible_parameter_types(CType
*type1
, CType
*type2
);
838 int ieee_finite(double d
);
839 void error(const char *fmt
, ...);
843 void lexpand_nr(void);
844 static void vpush_global_sym(CType
*type
, int v
);
845 void vset(CType
*type
, int r
, int v
);
846 void type_to_str(char *buf
, int buf_size
,
847 CType
*type
, const char *varstr
);
848 char *get_tok_str(int v
, CValue
*cv
);
849 static Sym
*get_sym_ref(CType
*type
, Section
*sec
,
850 unsigned long offset
, unsigned long size
);
851 static Sym
*external_global_sym(int v
, CType
*type
, int r
);
853 /* section generation */
854 static void section_realloc(Section
*sec
, unsigned long new_size
);
855 static void *section_ptr_add(Section
*sec
, unsigned long size
);
856 static void put_extern_sym(Sym
*sym
, Section
*section
,
857 unsigned long value
, unsigned long size
);
858 static void greloc(Section
*s
, Sym
*sym
, unsigned long addr
, int type
);
859 static int put_elf_str(Section
*s
, const char *sym
);
860 static int put_elf_sym(Section
*s
,
861 unsigned long value
, unsigned long size
,
862 int info
, int other
, int shndx
, const char *name
);
863 static int add_elf_sym(Section
*s
, unsigned long value
, unsigned long size
,
864 int info
, int other
, int sh_num
, const char *name
);
865 static void put_elf_reloc(Section
*symtab
, Section
*s
, unsigned long offset
,
866 int type
, int symbol
);
867 static void put_stabs(const char *str
, int type
, int other
, int desc
,
868 unsigned long value
);
869 static void put_stabs_r(const char *str
, int type
, int other
, int desc
,
870 unsigned long value
, Section
*sec
, int sym_index
);
871 static void put_stabn(int type
, int other
, int desc
, int value
);
872 static void put_stabd(int type
, int other
, int desc
);
873 static int tcc_add_dll(TCCState
*s
, const char *filename
, int flags
);
875 #define AFF_PRINT_ERROR 0x0001 /* print error if file not found */
876 #define AFF_REFERENCED_DLL 0x0002 /* load a referenced dll from another dll */
877 #define AFF_PREPROCESS 0x0004 /* preprocess file */
878 static int tcc_add_file_internal(TCCState
*s
, const char *filename
, int flags
);
881 int tcc_output_coff(TCCState
*s1
, FILE *f
);
884 void *resolve_sym(TCCState
*s1
, const char *sym
, int type
);
885 int pe_load_def_file(struct TCCState
*s1
, int fd
);
886 int pe_test_res_file(void *v
, int size
);
887 int pe_load_res_file(struct TCCState
*s1
, int fd
);
888 void pe_add_runtime(struct TCCState
*s1
);
889 void pe_guess_outfile(char *objfilename
, int output_type
);
890 int pe_output_file(struct TCCState
*s1
, const char *filename
);
894 #ifdef CONFIG_TCC_ASM
896 typedef struct ExprValue
{
901 #define MAX_ASM_OPERANDS 30
903 typedef struct ASMOperand
{
904 int id
; /* GCC 3 optionnal identifier (0 if number only supported */
906 char asm_str
[16]; /* computed asm string for operand */
907 SValue
*vt
; /* C value of the expression */
908 int ref_index
; /* if >= 0, gives reference to a output constraint */
909 int input_index
; /* if >= 0, gives reference to an input constraint */
910 int priority
; /* priority, used to assign registers */
911 int reg
; /* if >= 0, register number used for this operand */
912 int is_llong
; /* true if double register value */
913 int is_memory
; /* true if memory operand */
914 int is_rw
; /* for '+' modifier */
917 static void asm_expr(TCCState
*s1
, ExprValue
*pe
);
918 static int asm_int_expr(TCCState
*s1
);
919 static int find_constraint(ASMOperand
*operands
, int nb_operands
,
920 const char *name
, const char **pp
);
922 static int tcc_assemble(TCCState
*s1
, int do_preprocess
);
926 static void asm_instr(void);
927 static void asm_global_instr(void);
929 /* true if float/double/long double type */
930 static inline int is_float(int t
)
934 return bt
== VT_LDOUBLE
|| bt
== VT_DOUBLE
|| bt
== VT_FLOAT
;
937 #ifdef TCC_TARGET_I386
938 #include "i386-gen.c"
941 #ifdef TCC_TARGET_ARM
945 #ifdef TCC_TARGET_C67
949 #ifdef TCC_TARGET_X86_64
950 #include "x86_64-gen.c"
953 #ifdef CONFIG_TCC_STATIC
955 #define RTLD_LAZY 0x001
956 #define RTLD_NOW 0x002
957 #define RTLD_GLOBAL 0x100
958 #define RTLD_DEFAULT NULL
960 /* dummy function for profiling */
961 void *dlopen(const char *filename
, int flag
)
966 const char *dlerror(void)
971 typedef struct TCCSyms
{
976 #define TCCSYM(a) { #a, &a, },
978 /* add the symbol you want here if no dynamic linking is done */
979 static TCCSyms tcc_syms
[] = {
980 #if !defined(CONFIG_TCCBOOT)
989 void *resolve_sym(TCCState
*s1
, const char *symbol
, int type
)
993 while (p
->str
!= NULL
) {
994 if (!strcmp(p
->str
, symbol
))
1001 #elif !defined(_WIN32)
1005 void *resolve_sym(TCCState
*s1
, const char *sym
, int type
)
1007 return dlsym(RTLD_DEFAULT
, sym
);
1012 /********************************************************/
1014 /* we use our own 'finite' function to avoid potential problems with
1015 non standard math libs */
1016 /* XXX: endianness dependent */
1017 int ieee_finite(double d
)
1020 return ((unsigned)((p
[1] | 0x800fffff) + 1)) >> 31;
1023 /* copy a string and truncate it. */
1024 static char *pstrcpy(char *buf
, int buf_size
, const char *s
)
1031 q_end
= buf
+ buf_size
- 1;
1043 /* strcat and truncate. */
1044 static char *pstrcat(char *buf
, int buf_size
, const char *s
)
1049 pstrcpy(buf
+ len
, buf_size
- len
, s
);
1054 static int strstart(const char *str
, const char *val
, const char **ptr
)
1059 while (*q
!= '\0') {
1071 /* extract the basename of a file */
1072 static char *tcc_basename(const char *name
)
1074 char *p
= strchr(name
, 0);
1085 static char *tcc_fileextension (const char *name
)
1087 char *b
= tcc_basename(name
);
1088 char *e
= strrchr(b
, '.');
1089 return e
? e
: strchr(b
, 0);
1093 char *normalize_slashes(char *path
)
1096 for (p
= path
; *p
; ++p
)
1102 char *w32_tcc_lib_path(void)
1104 /* on win32, we suppose the lib and includes are at the location
1106 char path
[1024], *p
;
1107 GetModuleFileNameA(NULL
, path
, sizeof path
);
1108 p
= tcc_basename(normalize_slashes(strlwr(path
)));
1109 if (p
- 5 > path
&& 0 == strncmp(p
- 5, "/bin/", 5))
1114 return strdup(path
);
1118 void set_pages_executable(void *ptr
, unsigned long length
)
1121 unsigned long old_protect
;
1122 VirtualProtect(ptr
, length
, PAGE_EXECUTE_READWRITE
, &old_protect
);
1124 unsigned long start
, end
;
1125 start
= (unsigned long)ptr
& ~(PAGESIZE
- 1);
1126 end
= (unsigned long)ptr
+ length
;
1127 end
= (end
+ PAGESIZE
- 1) & ~(PAGESIZE
- 1);
1128 mprotect((void *)start
, end
- start
, PROT_READ
| PROT_WRITE
| PROT_EXEC
);
1132 /* memory management */
1136 unsigned malloc_usable_size(void*);
1139 static inline void tcc_free(void *ptr
)
1142 mem_cur_size
-= malloc_usable_size(ptr
);
1147 static void *tcc_malloc(unsigned long size
)
1152 error("memory full");
1154 mem_cur_size
+= malloc_usable_size(ptr
);
1155 if (mem_cur_size
> mem_max_size
)
1156 mem_max_size
= mem_cur_size
;
1161 static void *tcc_mallocz(unsigned long size
)
1164 ptr
= tcc_malloc(size
);
1165 memset(ptr
, 0, size
);
1169 static inline void *tcc_realloc(void *ptr
, unsigned long size
)
1173 mem_cur_size
-= malloc_usable_size(ptr
);
1175 ptr1
= realloc(ptr
, size
);
1177 /* NOTE: count not correct if alloc error, but not critical */
1178 mem_cur_size
+= malloc_usable_size(ptr1
);
1179 if (mem_cur_size
> mem_max_size
)
1180 mem_max_size
= mem_cur_size
;
1185 static char *tcc_strdup(const char *str
)
1188 ptr
= tcc_malloc(strlen(str
) + 1);
1193 #define free(p) use_tcc_free(p)
1194 #define malloc(s) use_tcc_malloc(s)
1195 #define realloc(p, s) use_tcc_realloc(p, s)
1197 static void dynarray_add(void ***ptab
, int *nb_ptr
, void *data
)
1204 /* every power of two we double array size */
1205 if ((nb
& (nb
- 1)) == 0) {
1210 pp
= tcc_realloc(pp
, nb_alloc
* sizeof(void *));
1212 error("memory full");
1219 static void dynarray_reset(void *pp
, int *n
)
1222 for (p
= *(void***)pp
; *n
; ++p
, --*n
)
1225 tcc_free(*(void**)pp
);
1229 /* symbol allocator */
1230 static Sym
*__sym_malloc(void)
1232 Sym
*sym_pool
, *sym
, *last_sym
;
1235 sym_pool
= tcc_malloc(SYM_POOL_NB
* sizeof(Sym
));
1236 dynarray_add(&sym_pools
, &nb_sym_pools
, sym_pool
);
1238 last_sym
= sym_free_first
;
1240 for(i
= 0; i
< SYM_POOL_NB
; i
++) {
1241 sym
->next
= last_sym
;
1245 sym_free_first
= last_sym
;
1249 static inline Sym
*sym_malloc(void)
1252 sym
= sym_free_first
;
1254 sym
= __sym_malloc();
1255 sym_free_first
= sym
->next
;
1259 static inline void sym_free(Sym
*sym
)
1261 sym
->next
= sym_free_first
;
1262 sym_free_first
= sym
;
1265 Section
*new_section(TCCState
*s1
, const char *name
, int sh_type
, int sh_flags
)
1269 sec
= tcc_mallocz(sizeof(Section
) + strlen(name
));
1270 strcpy(sec
->name
, name
);
1271 sec
->sh_type
= sh_type
;
1272 sec
->sh_flags
= sh_flags
;
1280 sec
->sh_addralign
= 4;
1283 sec
->sh_addralign
= 1;
1286 sec
->sh_addralign
= 32; /* default conservative alignment */
1290 /* only add section if not private */
1291 if (!(sh_flags
& SHF_PRIVATE
)) {
1292 sec
->sh_num
= s1
->nb_sections
;
1293 dynarray_add((void ***)&s1
->sections
, &s1
->nb_sections
, sec
);
1298 static void free_section(Section
*s
)
1300 if (s
->link
&& (s
->link
->sh_flags
& SHF_PRIVATE
))
1301 free_section(s
->link
);
1302 if (s
->hash
&& (s
->hash
->sh_flags
& SHF_PRIVATE
))
1303 s
->hash
->link
= NULL
, free_section(s
->hash
);
1308 /* realloc section and set its content to zero */
1309 static void section_realloc(Section
*sec
, unsigned long new_size
)
1312 unsigned char *data
;
1314 size
= sec
->data_allocated
;
1317 while (size
< new_size
)
1319 data
= tcc_realloc(sec
->data
, size
);
1321 error("memory full");
1322 memset(data
+ sec
->data_allocated
, 0, size
- sec
->data_allocated
);
1324 sec
->data_allocated
= size
;
1327 /* reserve at least 'size' bytes in section 'sec' from
1328 sec->data_offset. */
1329 static void *section_ptr_add(Section
*sec
, unsigned long size
)
1331 unsigned long offset
, offset1
;
1333 offset
= sec
->data_offset
;
1334 offset1
= offset
+ size
;
1335 if (offset1
> sec
->data_allocated
)
1336 section_realloc(sec
, offset1
);
1337 sec
->data_offset
= offset1
;
1338 return sec
->data
+ offset
;
1341 /* return a reference to a section, and create it if it does not
1343 Section
*find_section(TCCState
*s1
, const char *name
)
1347 for(i
= 1; i
< s1
->nb_sections
; i
++) {
1348 sec
= s1
->sections
[i
];
1349 if (!strcmp(name
, sec
->name
))
1352 /* sections are created as PROGBITS */
1353 return new_section(s1
, name
, SHT_PROGBITS
, SHF_ALLOC
);
1356 #define SECTION_ABS ((void *)1)
1358 /* update sym->c so that it points to an external symbol in section
1359 'section' with value 'value' */
1360 static void put_extern_sym2(Sym
*sym
, Section
*section
,
1361 unsigned long value
, unsigned long size
,
1362 int can_add_underscore
)
1364 int sym_type
, sym_bind
, sh_num
, info
, other
, attr
;
1369 if (section
== NULL
)
1371 else if (section
== SECTION_ABS
)
1374 sh_num
= section
->sh_num
;
1378 if ((sym
->type
.t
& VT_BTYPE
) == VT_FUNC
) {
1379 sym_type
= STT_FUNC
;
1380 #ifdef TCC_TARGET_PE
1382 attr
= sym
->type
.ref
->r
;
1383 if (FUNC_EXPORT(attr
))
1385 if (FUNC_CALL(attr
) == FUNC_STDCALL
)
1389 sym_type
= STT_OBJECT
;
1392 if (sym
->type
.t
& VT_STATIC
)
1393 sym_bind
= STB_LOCAL
;
1395 sym_bind
= STB_GLOBAL
;
1398 name
= get_tok_str(sym
->v
, NULL
);
1399 #ifdef CONFIG_TCC_BCHECK
1400 if (do_bounds_check
) {
1403 /* XXX: avoid doing that for statics ? */
1404 /* if bound checking is activated, we change some function
1405 names by adding the "__bound" prefix */
1408 /* XXX: we rely only on malloc hooks */
1421 strcpy(buf
, "__bound_");
1429 #ifdef TCC_TARGET_PE
1430 if ((other
& 2) && can_add_underscore
) {
1431 sprintf(buf1
, "_%s@%d", name
, FUNC_ARGS(attr
));
1435 if (tcc_state
->leading_underscore
&& can_add_underscore
) {
1437 pstrcpy(buf1
+ 1, sizeof(buf1
) - 1, name
);
1440 info
= ELFW(ST_INFO
)(sym_bind
, sym_type
);
1441 sym
->c
= add_elf_sym(symtab_section
, value
, size
, info
, other
, sh_num
, name
);
1443 esym
= &((ElfW(Sym
) *)symtab_section
->data
)[sym
->c
];
1444 esym
->st_value
= value
;
1445 esym
->st_size
= size
;
1446 esym
->st_shndx
= sh_num
;
1447 esym
->st_other
|= other
;
1451 static void put_extern_sym(Sym
*sym
, Section
*section
,
1452 unsigned long value
, unsigned long size
)
1454 put_extern_sym2(sym
, section
, value
, size
, 1);
1457 /* add a new relocation entry to symbol 'sym' in section 's' */
1458 static void greloc(Section
*s
, Sym
*sym
, unsigned long offset
, int type
)
1461 put_extern_sym(sym
, NULL
, 0, 0);
1462 /* now we can add ELF relocation info */
1463 put_elf_reloc(symtab_section
, s
, offset
, type
, sym
->c
);
1466 static inline int isid(int c
)
1468 return (c
>= 'a' && c
<= 'z') ||
1469 (c
>= 'A' && c
<= 'Z') ||
1473 static inline int isnum(int c
)
1475 return c
>= '0' && c
<= '9';
1478 static inline int isoct(int c
)
1480 return c
>= '0' && c
<= '7';
1483 static inline int toup(int c
)
1485 if (c
>= 'a' && c
<= 'z')
1486 return c
- 'a' + 'A';
1491 static void strcat_vprintf(char *buf
, int buf_size
, const char *fmt
, va_list ap
)
1495 vsnprintf(buf
+ len
, buf_size
- len
, fmt
, ap
);
1498 static void strcat_printf(char *buf
, int buf_size
, const char *fmt
, ...)
1502 strcat_vprintf(buf
, buf_size
, fmt
, ap
);
1506 void error1(TCCState
*s1
, int is_warning
, const char *fmt
, va_list ap
)
1513 for(f
= s1
->include_stack
; f
< s1
->include_stack_ptr
; f
++)
1514 strcat_printf(buf
, sizeof(buf
), "In file included from %s:%d:\n",
1515 (*f
)->filename
, (*f
)->line_num
);
1516 if (file
->line_num
> 0) {
1517 strcat_printf(buf
, sizeof(buf
),
1518 "%s:%d: ", file
->filename
, file
->line_num
);
1520 strcat_printf(buf
, sizeof(buf
),
1521 "%s: ", file
->filename
);
1524 strcat_printf(buf
, sizeof(buf
),
1528 strcat_printf(buf
, sizeof(buf
), "warning: ");
1529 strcat_vprintf(buf
, sizeof(buf
), fmt
, ap
);
1531 if (!s1
->error_func
) {
1532 /* default case: stderr */
1533 fprintf(stderr
, "%s\n", buf
);
1535 s1
->error_func(s1
->error_opaque
, buf
);
1537 if (!is_warning
|| s1
->warn_error
)
1542 void tcc_set_error_func(TCCState
*s
, void *error_opaque
,
1543 void (*error_func
)(void *opaque
, const char *msg
))
1545 s
->error_opaque
= error_opaque
;
1546 s
->error_func
= error_func
;
1550 /* error without aborting current compilation */
1551 void error_noabort(const char *fmt
, ...)
1553 TCCState
*s1
= tcc_state
;
1557 error1(s1
, 0, fmt
, ap
);
1561 void error(const char *fmt
, ...)
1563 TCCState
*s1
= tcc_state
;
1567 error1(s1
, 0, fmt
, ap
);
1569 /* better than nothing: in some cases, we accept to handle errors */
1570 if (s1
->error_set_jmp_enabled
) {
1571 longjmp(s1
->error_jmp_buf
, 1);
1573 /* XXX: eliminate this someday */
1578 void expect(const char *msg
)
1580 error("%s expected", msg
);
1583 void warning(const char *fmt
, ...)
1585 TCCState
*s1
= tcc_state
;
1592 error1(s1
, 1, fmt
, ap
);
1599 error("'%c' expected", c
);
1603 static void test_lvalue(void)
1605 if (!(vtop
->r
& VT_LVAL
))
1609 /* allocate a new token */
1610 static TokenSym
*tok_alloc_new(TokenSym
**pts
, const char *str
, int len
)
1612 TokenSym
*ts
, **ptable
;
1615 if (tok_ident
>= SYM_FIRST_ANOM
)
1616 error("memory full");
1618 /* expand token table if needed */
1619 i
= tok_ident
- TOK_IDENT
;
1620 if ((i
% TOK_ALLOC_INCR
) == 0) {
1621 ptable
= tcc_realloc(table_ident
, (i
+ TOK_ALLOC_INCR
) * sizeof(TokenSym
*));
1623 error("memory full");
1624 table_ident
= ptable
;
1627 ts
= tcc_malloc(sizeof(TokenSym
) + len
);
1628 table_ident
[i
] = ts
;
1629 ts
->tok
= tok_ident
++;
1630 ts
->sym_define
= NULL
;
1631 ts
->sym_label
= NULL
;
1632 ts
->sym_struct
= NULL
;
1633 ts
->sym_identifier
= NULL
;
1635 ts
->hash_next
= NULL
;
1636 memcpy(ts
->str
, str
, len
);
1637 ts
->str
[len
] = '\0';
1642 #define TOK_HASH_INIT 1
1643 #define TOK_HASH_FUNC(h, c) ((h) * 263 + (c))
1645 /* find a token and add it if not found */
1646 static TokenSym
*tok_alloc(const char *str
, int len
)
1648 TokenSym
*ts
, **pts
;
1654 h
= TOK_HASH_FUNC(h
, ((unsigned char *)str
)[i
]);
1655 h
&= (TOK_HASH_SIZE
- 1);
1657 pts
= &hash_ident
[h
];
1662 if (ts
->len
== len
&& !memcmp(ts
->str
, str
, len
))
1664 pts
= &(ts
->hash_next
);
1666 return tok_alloc_new(pts
, str
, len
);
1669 /* CString handling */
1671 static void cstr_realloc(CString
*cstr
, int new_size
)
1676 size
= cstr
->size_allocated
;
1678 size
= 8; /* no need to allocate a too small first string */
1679 while (size
< new_size
)
1681 data
= tcc_realloc(cstr
->data_allocated
, size
);
1683 error("memory full");
1684 cstr
->data_allocated
= data
;
1685 cstr
->size_allocated
= size
;
1690 static inline void cstr_ccat(CString
*cstr
, int ch
)
1693 size
= cstr
->size
+ 1;
1694 if (size
> cstr
->size_allocated
)
1695 cstr_realloc(cstr
, size
);
1696 ((unsigned char *)cstr
->data
)[size
- 1] = ch
;
1700 static void cstr_cat(CString
*cstr
, const char *str
)
1712 /* add a wide char */
1713 static void cstr_wccat(CString
*cstr
, int ch
)
1716 size
= cstr
->size
+ sizeof(nwchar_t
);
1717 if (size
> cstr
->size_allocated
)
1718 cstr_realloc(cstr
, size
);
1719 *(nwchar_t
*)(((unsigned char *)cstr
->data
) + size
- sizeof(nwchar_t
)) = ch
;
1723 static void cstr_new(CString
*cstr
)
1725 memset(cstr
, 0, sizeof(CString
));
1728 /* free string and reset it to NULL */
1729 static void cstr_free(CString
*cstr
)
1731 tcc_free(cstr
->data_allocated
);
1735 #define cstr_reset(cstr) cstr_free(cstr)
1737 /* XXX: unicode ? */
1738 static void add_char(CString
*cstr
, int c
)
1740 if (c
== '\'' || c
== '\"' || c
== '\\') {
1741 /* XXX: could be more precise if char or string */
1742 cstr_ccat(cstr
, '\\');
1744 if (c
>= 32 && c
<= 126) {
1747 cstr_ccat(cstr
, '\\');
1749 cstr_ccat(cstr
, 'n');
1751 cstr_ccat(cstr
, '0' + ((c
>> 6) & 7));
1752 cstr_ccat(cstr
, '0' + ((c
>> 3) & 7));
1753 cstr_ccat(cstr
, '0' + (c
& 7));
1758 /* XXX: buffer overflow */
1759 /* XXX: float tokens */
1760 char *get_tok_str(int v
, CValue
*cv
)
1762 static char buf
[STRING_MAX_SIZE
+ 1];
1763 static CString cstr_buf
;
1769 /* NOTE: to go faster, we give a fixed buffer for small strings */
1770 cstr_reset(&cstr_buf
);
1771 cstr_buf
.data
= buf
;
1772 cstr_buf
.size_allocated
= sizeof(buf
);
1778 /* XXX: not quite exact, but only useful for testing */
1779 sprintf(p
, "%u", cv
->ui
);
1783 /* XXX: not quite exact, but only useful for testing */
1784 sprintf(p
, "%Lu", cv
->ull
);
1787 cstr_ccat(&cstr_buf
, 'L');
1789 cstr_ccat(&cstr_buf
, '\'');
1790 add_char(&cstr_buf
, cv
->i
);
1791 cstr_ccat(&cstr_buf
, '\'');
1792 cstr_ccat(&cstr_buf
, '\0');
1796 len
= cstr
->size
- 1;
1798 add_char(&cstr_buf
, ((unsigned char *)cstr
->data
)[i
]);
1799 cstr_ccat(&cstr_buf
, '\0');
1802 cstr_ccat(&cstr_buf
, 'L');
1805 cstr_ccat(&cstr_buf
, '\"');
1807 len
= cstr
->size
- 1;
1809 add_char(&cstr_buf
, ((unsigned char *)cstr
->data
)[i
]);
1811 len
= (cstr
->size
/ sizeof(nwchar_t
)) - 1;
1813 add_char(&cstr_buf
, ((nwchar_t
*)cstr
->data
)[i
]);
1815 cstr_ccat(&cstr_buf
, '\"');
1816 cstr_ccat(&cstr_buf
, '\0');
1825 return strcpy(p
, "...");
1827 return strcpy(p
, "<<=");
1829 return strcpy(p
, ">>=");
1831 if (v
< TOK_IDENT
) {
1832 /* search in two bytes table */
1846 } else if (v
< tok_ident
) {
1847 return table_ident
[v
- TOK_IDENT
]->str
;
1848 } else if (v
>= SYM_FIRST_ANOM
) {
1849 /* special name for anonymous symbol */
1850 sprintf(p
, "L.%u", v
- SYM_FIRST_ANOM
);
1852 /* should never happen */
1857 return cstr_buf
.data
;
1860 /* push, without hashing */
1861 static Sym
*sym_push2(Sym
**ps
, int v
, int t
, long c
)
1875 /* find a symbol and return its associated structure. 's' is the top
1876 of the symbol stack */
1877 static Sym
*sym_find2(Sym
*s
, int v
)
1887 /* structure lookup */
1888 static inline Sym
*struct_find(int v
)
1891 if ((unsigned)v
>= (unsigned)(tok_ident
- TOK_IDENT
))
1893 return table_ident
[v
]->sym_struct
;
1896 /* find an identifier */
1897 static inline Sym
*sym_find(int v
)
1900 if ((unsigned)v
>= (unsigned)(tok_ident
- TOK_IDENT
))
1902 return table_ident
[v
]->sym_identifier
;
1905 /* push a given symbol on the symbol stack */
1906 static Sym
*sym_push(int v
, CType
*type
, int r
, int c
)
1915 s
= sym_push2(ps
, v
, type
->t
, c
);
1916 s
->type
.ref
= type
->ref
;
1918 /* don't record fields or anonymous symbols */
1920 if (!(v
& SYM_FIELD
) && (v
& ~SYM_STRUCT
) < SYM_FIRST_ANOM
) {
1921 /* record symbol in token array */
1922 ts
= table_ident
[(v
& ~SYM_STRUCT
) - TOK_IDENT
];
1924 ps
= &ts
->sym_struct
;
1926 ps
= &ts
->sym_identifier
;
1933 /* push a global identifier */
1934 static Sym
*global_identifier_push(int v
, int t
, int c
)
1937 s
= sym_push2(&global_stack
, v
, t
, c
);
1938 /* don't record anonymous symbol */
1939 if (v
< SYM_FIRST_ANOM
) {
1940 ps
= &table_ident
[v
- TOK_IDENT
]->sym_identifier
;
1941 /* modify the top most local identifier, so that
1942 sym_identifier will point to 's' when popped */
1944 ps
= &(*ps
)->prev_tok
;
1951 /* pop symbols until top reaches 'b' */
1952 static void sym_pop(Sym
**ptop
, Sym
*b
)
1962 /* remove symbol in token array */
1964 if (!(v
& SYM_FIELD
) && (v
& ~SYM_STRUCT
) < SYM_FIRST_ANOM
) {
1965 ts
= table_ident
[(v
& ~SYM_STRUCT
) - TOK_IDENT
];
1967 ps
= &ts
->sym_struct
;
1969 ps
= &ts
->sym_identifier
;
1980 BufferedFile
*tcc_open(TCCState
*s1
, const char *filename
)
1985 if (strcmp(filename
, "-") == 0)
1986 fd
= 0, filename
= "stdin";
1988 fd
= open(filename
, O_RDONLY
| O_BINARY
);
1989 if ((verbose
== 2 && fd
>= 0) || verbose
== 3)
1990 printf("%s %*s%s\n", fd
< 0 ? "nf":"->",
1991 (s1
->include_stack_ptr
- s1
->include_stack
), "", filename
);
1994 bf
= tcc_malloc(sizeof(BufferedFile
));
1996 bf
->buf_ptr
= bf
->buffer
;
1997 bf
->buf_end
= bf
->buffer
;
1998 bf
->buffer
[0] = CH_EOB
; /* put eob symbol */
1999 pstrcpy(bf
->filename
, sizeof(bf
->filename
), filename
);
2001 normalize_slashes(bf
->filename
);
2004 bf
->ifndef_macro
= 0;
2005 bf
->ifdef_stack_ptr
= s1
->ifdef_stack_ptr
;
2006 // printf("opening '%s'\n", filename);
2010 void tcc_close(BufferedFile
*bf
)
2012 total_lines
+= bf
->line_num
;
2017 /* fill input buffer and peek next char */
2018 static int tcc_peekc_slow(BufferedFile
*bf
)
2021 /* only tries to read if really end of buffer */
2022 if (bf
->buf_ptr
>= bf
->buf_end
) {
2024 #if defined(PARSE_DEBUG)
2029 len
= read(bf
->fd
, bf
->buffer
, len
);
2036 bf
->buf_ptr
= bf
->buffer
;
2037 bf
->buf_end
= bf
->buffer
+ len
;
2038 *bf
->buf_end
= CH_EOB
;
2040 if (bf
->buf_ptr
< bf
->buf_end
) {
2041 return bf
->buf_ptr
[0];
2043 bf
->buf_ptr
= bf
->buf_end
;
2048 /* return the current character, handling end of block if necessary
2050 static int handle_eob(void)
2052 return tcc_peekc_slow(file
);
2055 /* read next char from current input file and handle end of input buffer */
2056 static inline void inp(void)
2058 ch
= *(++(file
->buf_ptr
));
2059 /* end of buffer/file handling */
2064 /* handle '\[\r]\n' */
2065 static int handle_stray_noerror(void)
2067 while (ch
== '\\') {
2072 } else if (ch
== '\r') {
2086 static void handle_stray(void)
2088 if (handle_stray_noerror())
2089 error("stray '\\' in program");
2092 /* skip the stray and handle the \\n case. Output an error if
2093 incorrect char after the stray */
2094 static int handle_stray1(uint8_t *p
)
2098 if (p
>= file
->buf_end
) {
2115 /* handle just the EOB case, but not stray */
2116 #define PEEKC_EOB(c, p)\
2127 /* handle the complicated stray case */
2128 #define PEEKC(c, p)\
2133 c = handle_stray1(p);\
2138 /* input with '\[\r]\n' handling. Note that this function cannot
2139 handle other characters after '\', so you cannot call it inside
2140 strings or comments */
2141 static void minp(void)
2149 /* single line C++ comments */
2150 static uint8_t *parse_line_comment(uint8_t *p
)
2158 if (c
== '\n' || c
== CH_EOF
) {
2160 } else if (c
== '\\') {
2169 } else if (c
== '\r') {
2187 static uint8_t *parse_comment(uint8_t *p
)
2193 /* fast skip loop */
2196 if (c
== '\n' || c
== '*' || c
== '\\')
2200 if (c
== '\n' || c
== '*' || c
== '\\')
2204 /* now we can handle all the cases */
2208 } else if (c
== '*') {
2214 } else if (c
== '/') {
2215 goto end_of_comment
;
2216 } else if (c
== '\\') {
2221 /* skip '\[\r]\n', otherwise just skip the stray */
2227 } else if (c
== '\r') {
2244 /* stray, eob or eof */
2249 error("unexpected end of file in comment");
2250 } else if (c
== '\\') {
2262 /* space exlcuding newline */
2263 static inline int is_space(int ch
)
2265 return ch
== ' ' || ch
== '\t' || ch
== '\v' || ch
== '\f' || ch
== '\r';
2268 static inline void skip_spaces(void)
2270 while (is_space(ch
))
2274 /* parse a string without interpreting escapes */
2275 static uint8_t *parse_pp_string(uint8_t *p
,
2276 int sep
, CString
*str
)
2284 } else if (c
== '\\') {
2289 unterminated_string
:
2290 /* XXX: indicate line number of start of string */
2291 error("missing terminating %c character", sep
);
2292 } else if (c
== '\\') {
2293 /* escape : just skip \[\r]\n */
2298 } else if (c
== '\r') {
2301 expect("'\n' after '\r'");
2304 } else if (c
== CH_EOF
) {
2305 goto unterminated_string
;
2308 cstr_ccat(str
, '\\');
2314 } else if (c
== '\n') {
2317 } else if (c
== '\r') {
2321 cstr_ccat(str
, '\r');
2337 /* skip block of text until #else, #elif or #endif. skip also pairs of
2339 void preprocess_skip(void)
2341 int a
, start_of_line
, c
, in_warn_or_error
;
2348 in_warn_or_error
= 0;
2369 } else if (c
== '\\') {
2370 ch
= file
->buf_ptr
[0];
2371 handle_stray_noerror();
2378 if (in_warn_or_error
)
2380 p
= parse_pp_string(p
, c
, NULL
);
2384 if (in_warn_or_error
)
2391 p
= parse_comment(p
);
2392 } else if (ch
== '/') {
2393 p
= parse_line_comment(p
);
2398 if (start_of_line
) {
2403 (tok
== TOK_ELSE
|| tok
== TOK_ELIF
|| tok
== TOK_ENDIF
))
2405 if (tok
== TOK_IF
|| tok
== TOK_IFDEF
|| tok
== TOK_IFNDEF
)
2407 else if (tok
== TOK_ENDIF
)
2409 else if( tok
== TOK_ERROR
|| tok
== TOK_WARNING
)
2410 in_warn_or_error
= 1;
2424 /* ParseState handling */
2426 /* XXX: currently, no include file info is stored. Thus, we cannot display
2427 accurate messages if the function or data definition spans multiple
2430 /* save current parse state in 's' */
2431 void save_parse_state(ParseState
*s
)
2433 s
->line_num
= file
->line_num
;
2434 s
->macro_ptr
= macro_ptr
;
2439 /* restore parse state from 's' */
2440 void restore_parse_state(ParseState
*s
)
2442 file
->line_num
= s
->line_num
;
2443 macro_ptr
= s
->macro_ptr
;
2448 /* return the number of additional 'ints' necessary to store the
2450 static inline int tok_ext_size(int t
)
2464 error("unsupported token");
2471 return LDOUBLE_SIZE
/ 4;
2477 /* token string handling */
2479 static inline void tok_str_new(TokenString
*s
)
2483 s
->allocated_len
= 0;
2484 s
->last_line_num
= -1;
2487 static void tok_str_free(int *str
)
2492 static int *tok_str_realloc(TokenString
*s
)
2496 if (s
->allocated_len
== 0) {
2499 len
= s
->allocated_len
* 2;
2501 str
= tcc_realloc(s
->str
, len
* sizeof(int));
2503 error("memory full");
2504 s
->allocated_len
= len
;
2509 static void tok_str_add(TokenString
*s
, int t
)
2515 if (len
>= s
->allocated_len
)
2516 str
= tok_str_realloc(s
);
2521 static void tok_str_add2(TokenString
*s
, int t
, CValue
*cv
)
2528 /* allocate space for worst case */
2529 if (len
+ TOK_MAX_SIZE
> s
->allocated_len
)
2530 str
= tok_str_realloc(s
);
2539 str
[len
++] = cv
->tab
[0];
2548 nb_words
= (sizeof(CString
) + cv
->cstr
->size
+ 3) >> 2;
2549 while ((len
+ nb_words
) > s
->allocated_len
)
2550 str
= tok_str_realloc(s
);
2551 cstr
= (CString
*)(str
+ len
);
2553 cstr
->size
= cv
->cstr
->size
;
2554 cstr
->data_allocated
= NULL
;
2555 cstr
->size_allocated
= cstr
->size
;
2556 memcpy((char *)cstr
+ sizeof(CString
),
2557 cv
->cstr
->data
, cstr
->size
);
2564 #if LDOUBLE_SIZE == 8
2567 str
[len
++] = cv
->tab
[0];
2568 str
[len
++] = cv
->tab
[1];
2570 #if LDOUBLE_SIZE == 12
2572 str
[len
++] = cv
->tab
[0];
2573 str
[len
++] = cv
->tab
[1];
2574 str
[len
++] = cv
->tab
[2];
2575 #elif LDOUBLE_SIZE == 16
2577 str
[len
++] = cv
->tab
[0];
2578 str
[len
++] = cv
->tab
[1];
2579 str
[len
++] = cv
->tab
[2];
2580 str
[len
++] = cv
->tab
[3];
2581 #elif LDOUBLE_SIZE != 8
2582 #error add long double size support
2591 /* add the current parse token in token string 's' */
2592 static void tok_str_add_tok(TokenString
*s
)
2596 /* save line number info */
2597 if (file
->line_num
!= s
->last_line_num
) {
2598 s
->last_line_num
= file
->line_num
;
2599 cval
.i
= s
->last_line_num
;
2600 tok_str_add2(s
, TOK_LINENUM
, &cval
);
2602 tok_str_add2(s
, tok
, &tokc
);
2605 #if LDOUBLE_SIZE == 16
2606 #define LDOUBLE_GET(p, cv) \
2611 #elif LDOUBLE_SIZE == 12
2612 #define LDOUBLE_GET(p, cv) \
2616 #elif LDOUBLE_SIZE == 8
2617 #define LDOUBLE_GET(p, cv) \
2621 #error add long double size support
2625 /* get a token from an integer array and increment pointer
2626 accordingly. we code it as a macro to avoid pointer aliasing. */
2627 #define TOK_GET(t, p, cv) \
2642 cv.cstr = (CString *)p; \
2643 cv.cstr->data = (char *)p + sizeof(CString);\
2644 p += (sizeof(CString) + cv.cstr->size + 3) >> 2;\
2653 case TOK_CLDOUBLE: \
2654 LDOUBLE_GET(p, cv); \
2655 p += LDOUBLE_SIZE / 4; \
2662 /* defines handling */
2663 static inline void define_push(int v
, int macro_type
, int *str
, Sym
*first_arg
)
2667 s
= sym_push2(&define_stack
, v
, macro_type
, (long)str
);
2668 s
->next
= first_arg
;
2669 table_ident
[v
- TOK_IDENT
]->sym_define
= s
;
2672 /* undefined a define symbol. Its name is just set to zero */
2673 static void define_undef(Sym
*s
)
2677 if (v
>= TOK_IDENT
&& v
< tok_ident
)
2678 table_ident
[v
- TOK_IDENT
]->sym_define
= NULL
;
2682 static inline Sym
*define_find(int v
)
2685 if ((unsigned)v
>= (unsigned)(tok_ident
- TOK_IDENT
))
2687 return table_ident
[v
]->sym_define
;
2690 /* free define stack until top reaches 'b' */
2691 static void free_defines(Sym
*b
)
2699 /* do not free args or predefined defines */
2701 tok_str_free((int *)top
->c
);
2703 if (v
>= TOK_IDENT
&& v
< tok_ident
)
2704 table_ident
[v
- TOK_IDENT
]->sym_define
= NULL
;
2712 static Sym
*label_find(int v
)
2715 if ((unsigned)v
>= (unsigned)(tok_ident
- TOK_IDENT
))
2717 return table_ident
[v
]->sym_label
;
2720 static Sym
*label_push(Sym
**ptop
, int v
, int flags
)
2723 s
= sym_push2(ptop
, v
, 0, 0);
2725 ps
= &table_ident
[v
- TOK_IDENT
]->sym_label
;
2726 if (ptop
== &global_label_stack
) {
2727 /* modify the top most local identifier, so that
2728 sym_identifier will point to 's' when popped */
2730 ps
= &(*ps
)->prev_tok
;
2737 /* pop labels until element last is reached. Look if any labels are
2738 undefined. Define symbols if '&&label' was used. */
2739 static void label_pop(Sym
**ptop
, Sym
*slast
)
2742 for(s
= *ptop
; s
!= slast
; s
= s1
) {
2744 if (s
->r
== LABEL_DECLARED
) {
2745 warning("label '%s' declared but not used", get_tok_str(s
->v
, NULL
));
2746 } else if (s
->r
== LABEL_FORWARD
) {
2747 error("label '%s' used but not defined",
2748 get_tok_str(s
->v
, NULL
));
2751 /* define corresponding symbol. A size of
2753 put_extern_sym(s
, cur_text_section
, (long)s
->next
, 1);
2757 table_ident
[s
->v
- TOK_IDENT
]->sym_label
= s
->prev_tok
;
2763 /* eval an expression for #if/#elif */
2764 static int expr_preprocess(void)
2770 while (tok
!= TOK_LINEFEED
&& tok
!= TOK_EOF
) {
2771 next(); /* do macro subst */
2772 if (tok
== TOK_DEFINED
) {
2777 c
= define_find(tok
) != 0;
2782 } else if (tok
>= TOK_IDENT
) {
2783 /* if undefined macro */
2787 tok_str_add_tok(&str
);
2789 tok_str_add(&str
, -1); /* simulate end of file */
2790 tok_str_add(&str
, 0);
2791 /* now evaluate C constant expression */
2792 macro_ptr
= str
.str
;
2796 tok_str_free(str
.str
);
2800 #if defined(PARSE_DEBUG) || defined(PP_DEBUG)
2801 static void tok_print(int *str
)
2807 TOK_GET(t
, str
, cval
);
2810 printf(" %s", get_tok_str(t
, &cval
));
2816 /* parse after #define */
2817 static void parse_define(void)
2819 Sym
*s
, *first
, **ps
;
2820 int v
, t
, varg
, is_vaargs
, c
;
2825 error("invalid macro name '%s'", get_tok_str(tok
, &tokc
));
2826 /* XXX: should check if same macro (ANSI) */
2829 /* '(' must be just after macro definition for MACRO_FUNC */
2830 c
= file
->buf_ptr
[0];
2832 c
= handle_stray1(file
->buf_ptr
);
2837 while (tok
!= ')') {
2841 if (varg
== TOK_DOTS
) {
2842 varg
= TOK___VA_ARGS__
;
2844 } else if (tok
== TOK_DOTS
&& gnu_ext
) {
2848 if (varg
< TOK_IDENT
)
2849 error("badly punctuated parameter list");
2850 s
= sym_push2(&define_stack
, varg
| SYM_FIELD
, is_vaargs
, 0);
2861 /* EOF testing necessary for '-D' handling */
2862 while (tok
!= TOK_LINEFEED
&& tok
!= TOK_EOF
) {
2863 tok_str_add2(&str
, tok
, &tokc
);
2866 tok_str_add(&str
, 0);
2868 printf("define %s %d: ", get_tok_str(v
, NULL
), t
);
2871 define_push(v
, t
, str
.str
, first
);
2874 static inline int hash_cached_include(int type
, const char *filename
)
2876 const unsigned char *s
;
2880 h
= TOK_HASH_FUNC(h
, type
);
2883 h
= TOK_HASH_FUNC(h
, *s
);
2886 h
&= (CACHED_INCLUDES_HASH_SIZE
- 1);
2890 /* XXX: use a token or a hash table to accelerate matching ? */
2891 static CachedInclude
*search_cached_include(TCCState
*s1
,
2892 int type
, const char *filename
)
2896 h
= hash_cached_include(type
, filename
);
2897 i
= s1
->cached_includes_hash
[h
];
2901 e
= s1
->cached_includes
[i
- 1];
2902 if (e
->type
== type
&& !strcmp(e
->filename
, filename
))
2909 static inline void add_cached_include(TCCState
*s1
, int type
,
2910 const char *filename
, int ifndef_macro
)
2915 if (search_cached_include(s1
, type
, filename
))
2918 printf("adding cached '%s' %s\n", filename
, get_tok_str(ifndef_macro
, NULL
));
2920 e
= tcc_malloc(sizeof(CachedInclude
) + strlen(filename
));
2924 strcpy(e
->filename
, filename
);
2925 e
->ifndef_macro
= ifndef_macro
;
2926 dynarray_add((void ***)&s1
->cached_includes
, &s1
->nb_cached_includes
, e
);
2927 /* add in hash table */
2928 h
= hash_cached_include(type
, filename
);
2929 e
->hash_next
= s1
->cached_includes_hash
[h
];
2930 s1
->cached_includes_hash
[h
] = s1
->nb_cached_includes
;
2933 static void pragma_parse(TCCState
*s1
)
2938 if (tok
== TOK_pack
) {
2941 #pragma pack(1) // set
2942 #pragma pack() // reset to default
2943 #pragma pack(push,1) // push & set
2944 #pragma pack(pop) // restore previous
2948 if (tok
== TOK_ASM_pop
) {
2950 if (s1
->pack_stack_ptr
<= s1
->pack_stack
) {
2952 error("out of pack stack");
2954 s1
->pack_stack_ptr
--;
2958 if (tok
== TOK_ASM_push
) {
2960 if (s1
->pack_stack_ptr
>= s1
->pack_stack
+ PACK_STACK_SIZE
- 1)
2962 s1
->pack_stack_ptr
++;
2965 if (tok
!= TOK_CINT
) {
2967 error("invalid pack pragma");
2970 if (val
< 1 || val
> 16 || (val
& (val
- 1)) != 0)
2974 *s1
->pack_stack_ptr
= val
;
2980 /* is_bof is true if first non space token at beginning of file */
2981 static void preprocess(int is_bof
)
2983 TCCState
*s1
= tcc_state
;
2984 int size
, i
, c
, n
, saved_parse_flags
;
2991 saved_parse_flags
= parse_flags
;
2992 parse_flags
= PARSE_FLAG_PREPROCESS
| PARSE_FLAG_TOK_NUM
|
2993 PARSE_FLAG_LINEFEED
;
3003 s
= define_find(tok
);
3004 /* undefine symbol by putting an invalid name */
3009 case TOK_INCLUDE_NEXT
:
3010 ch
= file
->buf_ptr
[0];
3011 /* XXX: incorrect if comments : use next_nomacro with a special mode */
3016 } else if (ch
== '\"') {
3021 while (ch
!= c
&& ch
!= '\n' && ch
!= CH_EOF
) {
3022 if ((q
- buf
) < sizeof(buf
) - 1)
3025 if (handle_stray_noerror() == 0)
3033 /* eat all spaces and comments after include */
3034 /* XXX: slightly incorrect */
3035 while (ch1
!= '\n' && ch1
!= CH_EOF
)
3039 /* computed #include : either we have only strings or
3040 we have anything enclosed in '<>' */
3043 if (tok
== TOK_STR
) {
3044 while (tok
!= TOK_LINEFEED
) {
3045 if (tok
!= TOK_STR
) {
3047 error("'#include' expects \"FILENAME\" or <FILENAME>");
3049 pstrcat(buf
, sizeof(buf
), (char *)tokc
.cstr
->data
);
3055 while (tok
!= TOK_LINEFEED
) {
3056 pstrcat(buf
, sizeof(buf
), get_tok_str(tok
, &tokc
));
3060 /* check syntax and remove '<>' */
3061 if (len
< 2 || buf
[0] != '<' || buf
[len
- 1] != '>')
3062 goto include_syntax
;
3063 memmove(buf
, buf
+ 1, len
- 2);
3064 buf
[len
- 2] = '\0';
3069 e
= search_cached_include(s1
, c
, buf
);
3070 if (e
&& define_find(e
->ifndef_macro
)) {
3071 /* no need to parse the include because the 'ifndef macro'
3074 printf("%s: skipping %s\n", file
->filename
, buf
);
3077 if (s1
->include_stack_ptr
>= s1
->include_stack
+ INCLUDE_STACK_SIZE
)
3078 error("#include recursion too deep");
3079 /* push current file in stack */
3080 /* XXX: fix current line init */
3081 *s1
->include_stack_ptr
++ = file
;
3083 /* first search in current dir if "header.h" */
3084 size
= tcc_basename(file
->filename
) - file
->filename
;
3085 if (size
> sizeof(buf1
) - 1)
3086 size
= sizeof(buf1
) - 1;
3087 memcpy(buf1
, file
->filename
, size
);
3089 pstrcat(buf1
, sizeof(buf1
), buf
);
3090 f
= tcc_open(s1
, buf1
);
3092 if (tok
== TOK_INCLUDE_NEXT
)
3098 /* now search in all the include paths */
3099 n
= s1
->nb_include_paths
+ s1
->nb_sysinclude_paths
;
3100 for(i
= 0; i
< n
; i
++) {
3102 if (i
< s1
->nb_include_paths
)
3103 path
= s1
->include_paths
[i
];
3105 path
= s1
->sysinclude_paths
[i
- s1
->nb_include_paths
];
3106 pstrcpy(buf1
, sizeof(buf1
), path
);
3107 pstrcat(buf1
, sizeof(buf1
), "/");
3108 pstrcat(buf1
, sizeof(buf1
), buf
);
3109 f
= tcc_open(s1
, buf1
);
3111 if (tok
== TOK_INCLUDE_NEXT
)
3117 --s1
->include_stack_ptr
;
3118 error("include file '%s' not found", buf
);
3122 printf("%s: including %s\n", file
->filename
, buf1
);
3125 pstrcpy(f
->inc_filename
, sizeof(f
->inc_filename
), buf
);
3127 /* add include file debug info */
3129 put_stabs(file
->filename
, N_BINCL
, 0, 0, 0);
3131 tok_flags
|= TOK_FLAG_BOF
| TOK_FLAG_BOL
;
3132 ch
= file
->buf_ptr
[0];
3140 c
= expr_preprocess();
3146 if (tok
< TOK_IDENT
)
3147 error("invalid argument for '#if%sdef'", c
? "n" : "");
3151 printf("#ifndef %s\n", get_tok_str(tok
, NULL
));
3153 file
->ifndef_macro
= tok
;
3156 c
= (define_find(tok
) != 0) ^ c
;
3158 if (s1
->ifdef_stack_ptr
>= s1
->ifdef_stack
+ IFDEF_STACK_SIZE
)
3159 error("memory full");
3160 *s1
->ifdef_stack_ptr
++ = c
;
3163 if (s1
->ifdef_stack_ptr
== s1
->ifdef_stack
)
3164 error("#else without matching #if");
3165 if (s1
->ifdef_stack_ptr
[-1] & 2)
3166 error("#else after #else");
3167 c
= (s1
->ifdef_stack_ptr
[-1] ^= 3);
3170 if (s1
->ifdef_stack_ptr
== s1
->ifdef_stack
)
3171 error("#elif without matching #if");
3172 c
= s1
->ifdef_stack_ptr
[-1];
3174 error("#elif after #else");
3175 /* last #if/#elif expression was true: we skip */
3178 c
= expr_preprocess();
3179 s1
->ifdef_stack_ptr
[-1] = c
;
3189 if (s1
->ifdef_stack_ptr
<= file
->ifdef_stack_ptr
)
3190 error("#endif without matching #if");
3191 s1
->ifdef_stack_ptr
--;
3192 /* '#ifndef macro' was at the start of file. Now we check if
3193 an '#endif' is exactly at the end of file */
3194 if (file
->ifndef_macro
&&
3195 s1
->ifdef_stack_ptr
== file
->ifdef_stack_ptr
) {
3196 file
->ifndef_macro_saved
= file
->ifndef_macro
;
3197 /* need to set to zero to avoid false matches if another
3198 #ifndef at middle of file */
3199 file
->ifndef_macro
= 0;
3200 while (tok
!= TOK_LINEFEED
)
3202 tok_flags
|= TOK_FLAG_ENDIF
;
3208 if (tok
!= TOK_CINT
)
3210 file
->line_num
= tokc
.i
- 1; /* the line number will be incremented after */
3212 if (tok
!= TOK_LINEFEED
) {
3215 pstrcpy(file
->filename
, sizeof(file
->filename
),
3216 (char *)tokc
.cstr
->data
);
3222 ch
= file
->buf_ptr
[0];
3225 while (ch
!= '\n' && ch
!= CH_EOF
) {
3226 if ((q
- buf
) < sizeof(buf
) - 1)
3229 if (handle_stray_noerror() == 0)
3236 error("#error %s", buf
);
3238 warning("#warning %s", buf
);
3244 if (tok
== TOK_LINEFEED
|| tok
== '!' || tok
== TOK_CINT
) {
3245 /* '!' is ignored to allow C scripts. numbers are ignored
3246 to emulate cpp behaviour */
3248 if (!(saved_parse_flags
& PARSE_FLAG_ASM_COMMENTS
))
3249 warning("Ignoring unknown preprocessing directive #%s", get_tok_str(tok
, &tokc
));
3253 /* ignore other preprocess commands or #! for C scripts */
3254 while (tok
!= TOK_LINEFEED
)
3257 parse_flags
= saved_parse_flags
;
3260 /* evaluate escape codes in a string. */
3261 static void parse_escape_string(CString
*outstr
, const uint8_t *buf
, int is_long
)
3276 case '0': case '1': case '2': case '3':
3277 case '4': case '5': case '6': case '7':
3278 /* at most three octal digits */
3283 n
= n
* 8 + c
- '0';
3287 n
= n
* 8 + c
- '0';
3292 goto add_char_nonext
;
3300 if (c
>= 'a' && c
<= 'f')
3302 else if (c
>= 'A' && c
<= 'F')
3312 goto add_char_nonext
;
3336 goto invalid_escape
;
3346 if (c
>= '!' && c
<= '~')
3347 warning("unknown escape sequence: \'\\%c\'", c
);
3349 warning("unknown escape sequence: \'\\x%x\'", c
);
3356 cstr_ccat(outstr
, c
);
3358 cstr_wccat(outstr
, c
);
3360 /* add a trailing '\0' */
3362 cstr_ccat(outstr
, '\0');
3364 cstr_wccat(outstr
, '\0');
3367 /* we use 64 bit numbers */
3370 /* bn = (bn << shift) | or_val */
3371 void bn_lshift(unsigned int *bn
, int shift
, int or_val
)
3375 for(i
=0;i
<BN_SIZE
;i
++) {
3377 bn
[i
] = (v
<< shift
) | or_val
;
3378 or_val
= v
>> (32 - shift
);
3382 void bn_zero(unsigned int *bn
)
3385 for(i
=0;i
<BN_SIZE
;i
++) {
3390 /* parse number in null terminated string 'p' and return it in the
3392 void parse_number(const char *p
)
3394 int b
, t
, shift
, frac_bits
, s
, exp_val
, ch
;
3396 unsigned int bn
[BN_SIZE
];
3407 goto float_frac_parse
;
3408 } else if (t
== '0') {
3409 if (ch
== 'x' || ch
== 'X') {
3413 } else if (tcc_ext
&& (ch
== 'b' || ch
== 'B')) {
3419 /* parse all digits. cannot check octal numbers at this stage
3420 because of floating point constants */
3422 if (ch
>= 'a' && ch
<= 'f')
3424 else if (ch
>= 'A' && ch
<= 'F')
3432 if (q
>= token_buf
+ STRING_MAX_SIZE
) {
3434 error("number too long");
3440 ((ch
== 'e' || ch
== 'E') && b
== 10) ||
3441 ((ch
== 'p' || ch
== 'P') && (b
== 16 || b
== 2))) {
3443 /* NOTE: strtox should support that for hexa numbers, but
3444 non ISOC99 libcs do not support it, so we prefer to do
3446 /* hexadecimal or binary floats */
3447 /* XXX: handle overflows */
3459 } else if (t
>= 'a') {
3461 } else if (t
>= 'A') {
3466 bn_lshift(bn
, shift
, t
);
3473 if (t
>= 'a' && t
<= 'f') {
3475 } else if (t
>= 'A' && t
<= 'F') {
3477 } else if (t
>= '0' && t
<= '9') {
3483 error("invalid digit");
3484 bn_lshift(bn
, shift
, t
);
3489 if (ch
!= 'p' && ch
!= 'P')
3496 } else if (ch
== '-') {
3500 if (ch
< '0' || ch
> '9')
3501 expect("exponent digits");
3502 while (ch
>= '0' && ch
<= '9') {
3503 exp_val
= exp_val
* 10 + ch
- '0';
3506 exp_val
= exp_val
* s
;
3508 /* now we can generate the number */
3509 /* XXX: should patch directly float number */
3510 d
= (double)bn
[1] * 4294967296.0 + (double)bn
[0];
3511 d
= ldexp(d
, exp_val
- frac_bits
);
3516 /* float : should handle overflow */
3518 } else if (t
== 'L') {
3521 /* XXX: not large enough */
3522 tokc
.ld
= (long double)d
;
3528 /* decimal floats */
3530 if (q
>= token_buf
+ STRING_MAX_SIZE
)
3535 while (ch
>= '0' && ch
<= '9') {
3536 if (q
>= token_buf
+ STRING_MAX_SIZE
)
3542 if (ch
== 'e' || ch
== 'E') {
3543 if (q
>= token_buf
+ STRING_MAX_SIZE
)
3547 if (ch
== '-' || ch
== '+') {
3548 if (q
>= token_buf
+ STRING_MAX_SIZE
)
3553 if (ch
< '0' || ch
> '9')
3554 expect("exponent digits");
3555 while (ch
>= '0' && ch
<= '9') {
3556 if (q
>= token_buf
+ STRING_MAX_SIZE
)
3568 tokc
.f
= strtof(token_buf
, NULL
);
3569 } else if (t
== 'L') {
3572 tokc
.ld
= strtold(token_buf
, NULL
);
3575 tokc
.d
= strtod(token_buf
, NULL
);
3579 unsigned long long n
, n1
;
3582 /* integer number */
3585 if (b
== 10 && *q
== '0') {
3592 /* no need for checks except for base 10 / 8 errors */
3595 } else if (t
>= 'a') {
3597 } else if (t
>= 'A') {
3602 error("invalid digit");
3606 /* detect overflow */
3607 /* XXX: this test is not reliable */
3609 error("integer constant overflow");
3612 /* XXX: not exactly ANSI compliant */
3613 if ((n
& 0xffffffff00000000LL
) != 0) {
3618 } else if (n
> 0x7fffffff) {
3629 error("three 'l's in integer constant");
3632 if (tok
== TOK_CINT
)
3634 else if (tok
== TOK_CUINT
)
3638 } else if (t
== 'U') {
3640 error("two 'u's in integer constant");
3642 if (tok
== TOK_CINT
)
3644 else if (tok
== TOK_CLLONG
)
3651 if (tok
== TOK_CINT
|| tok
== TOK_CUINT
)
3659 #define PARSE2(c1, tok1, c2, tok2) \
3670 /* return next token without macro substitution */
3671 static inline void next_nomacro1(void)
3691 /* first look if it is in fact an end of buffer */
3692 if (p
>= file
->buf_end
) {
3696 if (p
>= file
->buf_end
)
3709 TCCState
*s1
= tcc_state
;
3710 if ((parse_flags
& PARSE_FLAG_LINEFEED
)
3711 && !(tok_flags
& TOK_FLAG_EOF
)) {
3712 tok_flags
|= TOK_FLAG_EOF
;
3714 goto keep_tok_flags
;
3715 } else if (s1
->include_stack_ptr
== s1
->include_stack
||
3716 !(parse_flags
& PARSE_FLAG_PREPROCESS
)) {
3717 /* no include left : end of file. */
3720 tok_flags
&= ~TOK_FLAG_EOF
;
3721 /* pop include file */
3723 /* test if previous '#endif' was after a #ifdef at
3725 if (tok_flags
& TOK_FLAG_ENDIF
) {
3727 printf("#endif %s\n", get_tok_str(file
->ifndef_macro_saved
, NULL
));
3729 add_cached_include(s1
, file
->inc_type
, file
->inc_filename
,
3730 file
->ifndef_macro_saved
);
3733 /* add end of include file debug info */
3735 put_stabd(N_EINCL
, 0, 0);
3737 /* pop include stack */
3739 s1
->include_stack_ptr
--;
3740 file
= *s1
->include_stack_ptr
;
3749 tok_flags
|= TOK_FLAG_BOL
;
3751 if (0 == (parse_flags
& PARSE_FLAG_LINEFEED
))
3754 goto keep_tok_flags
;
3759 if ((tok_flags
& TOK_FLAG_BOL
) &&
3760 (parse_flags
& PARSE_FLAG_PREPROCESS
)) {
3762 preprocess(tok_flags
& TOK_FLAG_BOF
);
3768 tok
= TOK_TWOSHARPS
;
3770 if (parse_flags
& PARSE_FLAG_ASM_COMMENTS
) {
3771 p
= parse_line_comment(p
- 1);
3780 case 'a': case 'b': case 'c': case 'd':
3781 case 'e': case 'f': case 'g': case 'h':
3782 case 'i': case 'j': case 'k': case 'l':
3783 case 'm': case 'n': case 'o': case 'p':
3784 case 'q': case 'r': case 's': case 't':
3785 case 'u': case 'v': case 'w': case 'x':
3787 case 'A': case 'B': case 'C': case 'D':
3788 case 'E': case 'F': case 'G': case 'H':
3789 case 'I': case 'J': case 'K':
3790 case 'M': case 'N': case 'O': case 'P':
3791 case 'Q': case 'R': case 'S': case 'T':
3792 case 'U': case 'V': case 'W': case 'X':
3798 h
= TOK_HASH_FUNC(h
, c
);
3802 if (!isidnum_table
[c
-CH_EOF
])
3804 h
= TOK_HASH_FUNC(h
, c
);
3811 /* fast case : no stray found, so we have the full token
3812 and we have already hashed it */
3814 h
&= (TOK_HASH_SIZE
- 1);
3815 pts
= &hash_ident
[h
];
3820 if (ts
->len
== len
&& !memcmp(ts
->str
, p1
, len
))
3822 pts
= &(ts
->hash_next
);
3824 ts
= tok_alloc_new(pts
, p1
, len
);
3828 cstr_reset(&tokcstr
);
3831 cstr_ccat(&tokcstr
, *p1
);
3837 while (isidnum_table
[c
-CH_EOF
]) {
3838 cstr_ccat(&tokcstr
, c
);
3841 ts
= tok_alloc(tokcstr
.data
, tokcstr
.size
);
3847 if (t
!= '\\' && t
!= '\'' && t
!= '\"') {
3849 goto parse_ident_fast
;
3852 if (c
== '\'' || c
== '\"') {
3856 cstr_reset(&tokcstr
);
3857 cstr_ccat(&tokcstr
, 'L');
3858 goto parse_ident_slow
;
3862 case '0': case '1': case '2': case '3':
3863 case '4': case '5': case '6': case '7':
3866 cstr_reset(&tokcstr
);
3867 /* after the first digit, accept digits, alpha, '.' or sign if
3868 prefixed by 'eEpP' */
3872 cstr_ccat(&tokcstr
, c
);
3874 if (!(isnum(c
) || isid(c
) || c
== '.' ||
3875 ((c
== '+' || c
== '-') &&
3876 (t
== 'e' || t
== 'E' || t
== 'p' || t
== 'P'))))
3879 /* We add a trailing '\0' to ease parsing */
3880 cstr_ccat(&tokcstr
, '\0');
3881 tokc
.cstr
= &tokcstr
;
3885 /* special dot handling because it can also start a number */
3888 cstr_reset(&tokcstr
);
3889 cstr_ccat(&tokcstr
, '.');
3891 } else if (c
== '.') {
3911 /* parse the string */
3913 p
= parse_pp_string(p
, sep
, &str
);
3914 cstr_ccat(&str
, '\0');
3916 /* eval the escape (should be done as TOK_PPNUM) */
3917 cstr_reset(&tokcstr
);
3918 parse_escape_string(&tokcstr
, str
.data
, is_long
);
3923 /* XXX: make it portable */
3927 char_size
= sizeof(nwchar_t
);
3928 if (tokcstr
.size
<= char_size
)
3929 error("empty character constant");
3930 if (tokcstr
.size
> 2 * char_size
)
3931 warning("multi-character character constant");
3933 tokc
.i
= *(int8_t *)tokcstr
.data
;
3936 tokc
.i
= *(nwchar_t
*)tokcstr
.data
;
3940 tokc
.cstr
= &tokcstr
;
3954 } else if (c
== '<') {
3972 } else if (c
== '>') {
3990 } else if (c
== '=') {
4003 } else if (c
== '=') {
4016 } else if (c
== '=') {
4029 } else if (c
== '=') {
4032 } else if (c
== '>') {
4040 PARSE2('!', '!', '=', TOK_NE
)
4041 PARSE2('=', '=', '=', TOK_EQ
)
4042 PARSE2('*', '*', '=', TOK_A_MUL
)
4043 PARSE2('%', '%', '=', TOK_A_MOD
)
4044 PARSE2('^', '^', '=', TOK_A_XOR
)
4046 /* comments or operator */
4050 p
= parse_comment(p
);
4052 } else if (c
== '/') {
4053 p
= parse_line_comment(p
);
4055 } else if (c
== '=') {
4075 case '$': /* only used in assembler */
4076 case '@': /* dito */
4081 error("unrecognized character \\x%02x", c
);
4087 #if defined(PARSE_DEBUG)
4088 printf("token = %s\n", get_tok_str(tok
, &tokc
));
4092 /* return next token without macro substitution. Can read input from
4094 static void next_nomacro(void)
4100 TOK_GET(tok
, macro_ptr
, tokc
);
4101 if (tok
== TOK_LINENUM
) {
4102 file
->line_num
= tokc
.i
;
4111 /* substitute args in macro_str and return allocated string */
4112 static int *macro_arg_subst(Sym
**nested_list
, int *macro_str
, Sym
*args
)
4114 int *st
, last_tok
, t
, notfirst
;
4123 TOK_GET(t
, macro_str
, cval
);
4128 TOK_GET(t
, macro_str
, cval
);
4131 s
= sym_find2(args
, t
);
4138 cstr_ccat(&cstr
, ' ');
4139 TOK_GET(t
, st
, cval
);
4140 cstr_cat(&cstr
, get_tok_str(t
, &cval
));
4145 cstr_ccat(&cstr
, '\0');
4147 printf("stringize: %s\n", (char *)cstr
.data
);
4151 tok_str_add2(&str
, TOK_STR
, &cval
);
4154 tok_str_add2(&str
, t
, &cval
);
4156 } else if (t
>= TOK_IDENT
) {
4157 s
= sym_find2(args
, t
);
4160 /* if '##' is present before or after, no arg substitution */
4161 if (*macro_str
== TOK_TWOSHARPS
|| last_tok
== TOK_TWOSHARPS
) {
4162 /* special case for var arg macros : ## eats the
4163 ',' if empty VA_ARGS variable. */
4164 /* XXX: test of the ',' is not 100%
4165 reliable. should fix it to avoid security
4167 if (gnu_ext
&& s
->type
.t
&&
4168 last_tok
== TOK_TWOSHARPS
&&
4169 str
.len
>= 2 && str
.str
[str
.len
- 2] == ',') {
4171 /* suppress ',' '##' */
4174 /* suppress '##' and add variable */
4182 TOK_GET(t1
, st
, cval
);
4185 tok_str_add2(&str
, t1
, &cval
);
4189 /* NOTE: the stream cannot be read when macro
4190 substituing an argument */
4191 macro_subst(&str
, nested_list
, st
, NULL
);
4194 tok_str_add(&str
, t
);
4197 tok_str_add2(&str
, t
, &cval
);
4201 tok_str_add(&str
, 0);
4205 static char const ab_month_name
[12][4] =
4207 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
4208 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
4211 /* do macro substitution of current token with macro 's' and add
4212 result to (tok_str,tok_len). 'nested_list' is the list of all
4213 macros we got inside to avoid recursing. Return non zero if no
4214 substitution needs to be done */
4215 static int macro_subst_tok(TokenString
*tok_str
,
4216 Sym
**nested_list
, Sym
*s
, struct macro_level
**can_read_stream
)
4218 Sym
*args
, *sa
, *sa1
;
4219 int mstr_allocated
, parlevel
, *mstr
, t
, t1
;
4226 /* if symbol is a macro, prepare substitution */
4227 /* special macros */
4228 if (tok
== TOK___LINE__
) {
4229 snprintf(buf
, sizeof(buf
), "%d", file
->line_num
);
4233 } else if (tok
== TOK___FILE__
) {
4234 cstrval
= file
->filename
;
4236 } else if (tok
== TOK___DATE__
|| tok
== TOK___TIME__
) {
4241 tm
= localtime(&ti
);
4242 if (tok
== TOK___DATE__
) {
4243 snprintf(buf
, sizeof(buf
), "%s %2d %d",
4244 ab_month_name
[tm
->tm_mon
], tm
->tm_mday
, tm
->tm_year
+ 1900);
4246 snprintf(buf
, sizeof(buf
), "%02d:%02d:%02d",
4247 tm
->tm_hour
, tm
->tm_min
, tm
->tm_sec
);
4254 cstr_cat(&cstr
, cstrval
);
4255 cstr_ccat(&cstr
, '\0');
4257 tok_str_add2(tok_str
, t1
, &cval
);
4262 if (s
->type
.t
== MACRO_FUNC
) {
4263 /* NOTE: we do not use next_nomacro to avoid eating the
4264 next token. XXX: find better solution */
4268 if (t
== 0 && can_read_stream
) {
4269 /* end of macro stream: we must look at the token
4270 after in the file */
4271 struct macro_level
*ml
= *can_read_stream
;
4277 *can_read_stream
= ml
-> prev
;
4282 /* XXX: incorrect with comments */
4283 ch
= file
->buf_ptr
[0];
4284 while (is_space(ch
) || ch
== '\n')
4288 if (t
!= '(') /* no macro subst */
4291 /* argument macro */
4296 /* NOTE: empty args are allowed, except if no args */
4298 /* handle '()' case */
4299 if (!args
&& !sa
&& tok
== ')')
4302 error("macro '%s' used with too many args",
4303 get_tok_str(s
->v
, 0));
4306 /* NOTE: non zero sa->t indicates VA_ARGS */
4307 while ((parlevel
> 0 ||
4309 (tok
!= ',' || sa
->type
.t
))) &&
4313 else if (tok
== ')')
4315 if (tok
!= TOK_LINEFEED
)
4316 tok_str_add2(&str
, tok
, &tokc
);
4319 tok_str_add(&str
, 0);
4320 sym_push2(&args
, sa
->v
& ~SYM_FIELD
, sa
->type
.t
, (long)str
.str
);
4323 /* special case for gcc var args: add an empty
4324 var arg argument if it is omitted */
4325 if (sa
&& sa
->type
.t
&& gnu_ext
)
4335 error("macro '%s' used with too few args",
4336 get_tok_str(s
->v
, 0));
4339 /* now subst each arg */
4340 mstr
= macro_arg_subst(nested_list
, mstr
, args
);
4345 tok_str_free((int *)sa
->c
);
4351 sym_push2(nested_list
, s
->v
, 0, 0);
4352 macro_subst(tok_str
, nested_list
, mstr
, can_read_stream
);
4353 /* pop nested defined symbol */
4355 *nested_list
= sa1
->prev
;
4363 /* handle the '##' operator. Return NULL if no '##' seen. Otherwise
4364 return the resulting string (which must be freed). */
4365 static inline int *macro_twosharps(const int *macro_str
)
4368 const int *macro_ptr1
, *start_macro_ptr
, *ptr
, *saved_macro_ptr
;
4370 const char *p1
, *p2
;
4372 TokenString macro_str1
;
4375 start_macro_ptr
= macro_str
;
4376 /* we search the first '##' */
4378 macro_ptr1
= macro_str
;
4379 TOK_GET(t
, macro_str
, cval
);
4380 /* nothing more to do if end of string */
4383 if (*macro_str
== TOK_TWOSHARPS
)
4387 /* we saw '##', so we need more processing to handle it */
4389 tok_str_new(¯o_str1
);
4393 /* add all tokens seen so far */
4394 for(ptr
= start_macro_ptr
; ptr
< macro_ptr1
;) {
4395 TOK_GET(t
, ptr
, cval
);
4396 tok_str_add2(¯o_str1
, t
, &cval
);
4398 saved_macro_ptr
= macro_ptr
;
4399 /* XXX: get rid of the use of macro_ptr here */
4400 macro_ptr
= (int *)macro_str
;
4402 while (*macro_ptr
== TOK_TWOSHARPS
) {
4404 macro_ptr1
= macro_ptr
;
4407 TOK_GET(t
, macro_ptr
, cval
);
4408 /* We concatenate the two tokens if we have an
4409 identifier or a preprocessing number */
4411 p1
= get_tok_str(tok
, &tokc
);
4412 cstr_cat(&cstr
, p1
);
4413 p2
= get_tok_str(t
, &cval
);
4414 cstr_cat(&cstr
, p2
);
4415 cstr_ccat(&cstr
, '\0');
4417 if ((tok
>= TOK_IDENT
|| tok
== TOK_PPNUM
) &&
4418 (t
>= TOK_IDENT
|| t
== TOK_PPNUM
)) {
4419 if (tok
== TOK_PPNUM
) {
4420 /* if number, then create a number token */
4421 /* NOTE: no need to allocate because
4422 tok_str_add2() does it */
4423 cstr_reset(&tokcstr
);
4426 tokc
.cstr
= &tokcstr
;
4428 /* if identifier, we must do a test to
4429 validate we have a correct identifier */
4430 if (t
== TOK_PPNUM
) {
4440 if (!isnum(c
) && !isid(c
))
4444 ts
= tok_alloc(cstr
.data
, strlen(cstr
.data
));
4445 tok
= ts
->tok
; /* modify current token */
4448 const char *str
= cstr
.data
;
4449 const unsigned char *q
;
4451 /* we look for a valid token */
4452 /* XXX: do more extensive checks */
4453 if (!strcmp(str
, ">>=")) {
4455 } else if (!strcmp(str
, "<<=")) {
4457 } else if (strlen(str
) == 2) {
4458 /* search in two bytes table */
4463 if (q
[0] == str
[0] && q
[1] == str
[1])
4470 /* NOTE: because get_tok_str use a static buffer,
4473 p1
= get_tok_str(tok
, &tokc
);
4474 cstr_cat(&cstr
, p1
);
4475 cstr_ccat(&cstr
, '\0');
4476 p2
= get_tok_str(t
, &cval
);
4477 warning("pasting \"%s\" and \"%s\" does not give a valid preprocessing token", cstr
.data
, p2
);
4478 /* cannot merge tokens: just add them separately */
4479 tok_str_add2(¯o_str1
, tok
, &tokc
);
4480 /* XXX: free associated memory ? */
4487 tok_str_add2(¯o_str1
, tok
, &tokc
);
4492 macro_ptr
= (int *)saved_macro_ptr
;
4494 tok_str_add(¯o_str1
, 0);
4495 return macro_str1
.str
;
4499 /* do macro substitution of macro_str and add result to
4500 (tok_str,tok_len). 'nested_list' is the list of all macros we got
4501 inside to avoid recursing. */
4502 static void macro_subst(TokenString
*tok_str
, Sym
**nested_list
,
4503 const int *macro_str
, struct macro_level
** can_read_stream
)
4510 struct macro_level ml
;
4512 /* first scan for '##' operator handling */
4514 macro_str1
= macro_twosharps(ptr
);
4518 /* NOTE: ptr == NULL can only happen if tokens are read from
4519 file stream due to a macro function call */
4522 TOK_GET(t
, ptr
, cval
);
4527 /* if nested substitution, do nothing */
4528 if (sym_find2(*nested_list
, t
))
4531 if (can_read_stream
)
4532 ml
.prev
= *can_read_stream
, *can_read_stream
= &ml
;
4533 macro_ptr
= (int *)ptr
;
4535 ret
= macro_subst_tok(tok_str
, nested_list
, s
, can_read_stream
);
4536 ptr
= (int *)macro_ptr
;
4538 if (can_read_stream
&& *can_read_stream
== &ml
)
4539 *can_read_stream
= ml
.prev
;
4544 tok_str_add2(tok_str
, t
, &cval
);
4548 tok_str_free(macro_str1
);
4551 /* return next token with macro substitution */
4552 static void next(void)
4554 Sym
*nested_list
, *s
;
4556 struct macro_level
*ml
;
4561 /* if not reading from macro substituted string, then try
4562 to substitute macros */
4563 if (tok
>= TOK_IDENT
&&
4564 (parse_flags
& PARSE_FLAG_PREPROCESS
)) {
4565 s
= define_find(tok
);
4567 /* we have a macro: we try to substitute */
4571 if (macro_subst_tok(&str
, &nested_list
, s
, &ml
) == 0) {
4572 /* substitution done, NOTE: maybe empty */
4573 tok_str_add(&str
, 0);
4574 macro_ptr
= str
.str
;
4575 macro_ptr_allocated
= str
.str
;
4582 /* end of macro or end of unget buffer */
4583 if (unget_buffer_enabled
) {
4584 macro_ptr
= unget_saved_macro_ptr
;
4585 unget_buffer_enabled
= 0;
4587 /* end of macro string: free it */
4588 tok_str_free(macro_ptr_allocated
);
4595 /* convert preprocessor tokens into C tokens */
4596 if (tok
== TOK_PPNUM
&&
4597 (parse_flags
& PARSE_FLAG_TOK_NUM
)) {
4598 parse_number((char *)tokc
.cstr
->data
);
4602 /* push back current token and set current token to 'last_tok'. Only
4603 identifier case handled for labels. */
4604 static inline void unget_tok(int last_tok
)
4608 unget_saved_macro_ptr
= macro_ptr
;
4609 unget_buffer_enabled
= 1;
4610 q
= unget_saved_buffer
;
4613 n
= tok_ext_size(tok
) - 1;
4616 *q
= 0; /* end of token string */
4621 void swap(int *p
, int *q
)
4629 void vsetc(CType
*type
, int r
, CValue
*vc
)
4633 if (vtop
>= vstack
+ (VSTACK_SIZE
- 1))
4634 error("memory full");
4635 /* cannot let cpu flags if other instruction are generated. Also
4636 avoid leaving VT_JMP anywhere except on the top of the stack
4637 because it would complicate the code generator. */
4638 if (vtop
>= vstack
) {
4639 v
= vtop
->r
& VT_VALMASK
;
4640 if (v
== VT_CMP
|| (v
& ~1) == VT_JMP
)
4646 vtop
->r2
= VT_CONST
;
4650 /* push integer constant */
4655 vsetc(&int_type
, VT_CONST
, &cval
);
4658 /* Return a static symbol pointing to a section */
4659 static Sym
*get_sym_ref(CType
*type
, Section
*sec
,
4660 unsigned long offset
, unsigned long size
)
4666 sym
= global_identifier_push(v
, type
->t
| VT_STATIC
, 0);
4667 sym
->type
.ref
= type
->ref
;
4668 sym
->r
= VT_CONST
| VT_SYM
;
4669 put_extern_sym(sym
, sec
, offset
, size
);
4673 /* push a reference to a section offset by adding a dummy symbol */
4674 static void vpush_ref(CType
*type
, Section
*sec
, unsigned long offset
, unsigned long size
)
4679 vsetc(type
, VT_CONST
| VT_SYM
, &cval
);
4680 vtop
->sym
= get_sym_ref(type
, sec
, offset
, size
);
4683 /* define a new external reference to a symbol 'v' of type 'u' */
4684 static Sym
*external_global_sym(int v
, CType
*type
, int r
)
4690 /* push forward reference */
4691 s
= global_identifier_push(v
, type
->t
| VT_EXTERN
, 0);
4692 s
->type
.ref
= type
->ref
;
4693 s
->r
= r
| VT_CONST
| VT_SYM
;
4698 /* define a new external reference to a symbol 'v' of type 'u' */
4699 static Sym
*external_sym(int v
, CType
*type
, int r
)
4705 /* push forward reference */
4706 s
= sym_push(v
, type
, r
| VT_CONST
| VT_SYM
, 0);
4707 s
->type
.t
|= VT_EXTERN
;
4709 if (!is_compatible_types(&s
->type
, type
))
4710 error("incompatible types for redefinition of '%s'",
4711 get_tok_str(v
, NULL
));
4716 /* push a reference to global symbol v */
4717 static void vpush_global_sym(CType
*type
, int v
)
4722 sym
= external_global_sym(v
, type
, 0);
4724 vsetc(type
, VT_CONST
| VT_SYM
, &cval
);
4728 void vset(CType
*type
, int r
, int v
)
4733 vsetc(type
, r
, &cval
);
4736 void vseti(int r
, int v
)
4752 void vpushv(SValue
*v
)
4754 if (vtop
>= vstack
+ (VSTACK_SIZE
- 1))
4755 error("memory full");
4765 /* save r to the memory stack, and mark it as being free */
4766 void save_reg(int r
)
4768 int l
, saved
, size
, align
;
4772 /* modify all stack values */
4775 for(p
=vstack
;p
<=vtop
;p
++) {
4776 if ((p
->r
& VT_VALMASK
) == r
||
4777 ((p
->type
.t
& VT_BTYPE
) == VT_LLONG
&& (p
->r2
& VT_VALMASK
) == r
)) {
4778 /* must save value on stack if not already done */
4780 /* NOTE: must reload 'r' because r might be equal to r2 */
4781 r
= p
->r
& VT_VALMASK
;
4782 /* store register in the stack */
4784 #ifndef TCC_TARGET_X86_64
4785 if ((p
->r
& VT_LVAL
) ||
4786 (!is_float(type
->t
) && (type
->t
& VT_BTYPE
) != VT_LLONG
))
4790 type
= &char_pointer_type
;
4792 size
= type_size(type
, &align
);
4793 loc
= (loc
- size
) & -align
;
4794 sv
.type
.t
= type
->t
;
4795 sv
.r
= VT_LOCAL
| VT_LVAL
;
4798 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
4799 /* x86 specific: need to pop fp register ST0 if saved */
4800 if (r
== TREG_ST0
) {
4801 o(0xd9dd); /* fstp %st(1) */
4804 #ifndef TCC_TARGET_X86_64
4805 /* special long long case */
4806 if ((type
->t
& VT_BTYPE
) == VT_LLONG
) {
4814 /* mark that stack entry as being saved on the stack */
4815 if (p
->r
& VT_LVAL
) {
4816 /* also clear the bounded flag because the
4817 relocation address of the function was stored in
4819 p
->r
= (p
->r
& ~(VT_VALMASK
| VT_BOUNDED
)) | VT_LLOCAL
;
4821 p
->r
= lvalue_type(p
->type
.t
) | VT_LOCAL
;
4829 /* find a register of class 'rc2' with at most one reference on stack.
4830 * If none, call get_reg(rc) */
4831 int get_reg_ex(int rc
, int rc2
)
4836 for(r
=0;r
<NB_REGS
;r
++) {
4837 if (reg_classes
[r
] & rc2
) {
4840 for(p
= vstack
; p
<= vtop
; p
++) {
4841 if ((p
->r
& VT_VALMASK
) == r
||
4842 (p
->r2
& VT_VALMASK
) == r
)
4852 /* find a free register of class 'rc'. If none, save one register */
4858 /* find a free register */
4859 for(r
=0;r
<NB_REGS
;r
++) {
4860 if (reg_classes
[r
] & rc
) {
4861 for(p
=vstack
;p
<=vtop
;p
++) {
4862 if ((p
->r
& VT_VALMASK
) == r
||
4863 (p
->r2
& VT_VALMASK
) == r
)
4871 /* no register left : free the first one on the stack (VERY
4872 IMPORTANT to start from the bottom to ensure that we don't
4873 spill registers used in gen_opi()) */
4874 for(p
=vstack
;p
<=vtop
;p
++) {
4875 r
= p
->r
& VT_VALMASK
;
4876 if (r
< VT_CONST
&& (reg_classes
[r
] & rc
))
4878 /* also look at second register (if long long) */
4879 r
= p
->r2
& VT_VALMASK
;
4880 if (r
< VT_CONST
&& (reg_classes
[r
] & rc
)) {
4886 /* Should never comes here */
4890 /* save registers up to (vtop - n) stack entry */
4891 void save_regs(int n
)
4896 for(p
= vstack
;p
<= p1
; p
++) {
4897 r
= p
->r
& VT_VALMASK
;
4904 /* move register 's' to 'r', and flush previous value of r to memory
4906 void move_reg(int r
, int s
)
4919 /* get address of vtop (vtop MUST BE an lvalue) */
4922 vtop
->r
&= ~VT_LVAL
;
4923 /* tricky: if saved lvalue, then we can go back to lvalue */
4924 if ((vtop
->r
& VT_VALMASK
) == VT_LLOCAL
)
4925 vtop
->r
= (vtop
->r
& ~(VT_VALMASK
| VT_LVAL_TYPE
)) | VT_LOCAL
| VT_LVAL
;
4928 #ifdef CONFIG_TCC_BCHECK
4929 /* generate lvalue bound code */
4935 vtop
->r
&= ~VT_MUSTBOUND
;
4936 /* if lvalue, then use checking code before dereferencing */
4937 if (vtop
->r
& VT_LVAL
) {
4938 /* if not VT_BOUNDED value, then make one */
4939 if (!(vtop
->r
& VT_BOUNDED
)) {
4940 lval_type
= vtop
->r
& (VT_LVAL_TYPE
| VT_LVAL
);
4941 /* must save type because we must set it to int to get pointer */
4943 vtop
->type
.t
= VT_INT
;
4946 gen_bounded_ptr_add();
4947 vtop
->r
|= lval_type
;
4950 /* then check for dereferencing */
4951 gen_bounded_ptr_deref();
4956 /* store vtop a register belonging to class 'rc'. lvalues are
4957 converted to values. Cannot be used if cannot be converted to
4958 register value (such as structures). */
4961 int r
, rc2
, bit_pos
, bit_size
, size
, align
, i
;
4963 /* NOTE: get_reg can modify vstack[] */
4964 if (vtop
->type
.t
& VT_BITFIELD
) {
4966 bit_pos
= (vtop
->type
.t
>> VT_STRUCT_SHIFT
) & 0x3f;
4967 bit_size
= (vtop
->type
.t
>> (VT_STRUCT_SHIFT
+ 6)) & 0x3f;
4968 /* remove bit field info to avoid loops */
4969 vtop
->type
.t
&= ~(VT_BITFIELD
| (-1 << VT_STRUCT_SHIFT
));
4970 /* cast to int to propagate signedness in following ops */
4972 if((vtop
->type
.t
& VT_UNSIGNED
) ||
4973 (vtop
->type
.t
& VT_BTYPE
) == VT_BOOL
)
4974 type
.t
|= VT_UNSIGNED
;
4976 /* generate shifts */
4977 vpushi(32 - (bit_pos
+ bit_size
));
4979 vpushi(32 - bit_size
);
4980 /* NOTE: transformed to SHR if unsigned */
4984 if (is_float(vtop
->type
.t
) &&
4985 (vtop
->r
& (VT_VALMASK
| VT_LVAL
)) == VT_CONST
) {
4988 unsigned long offset
;
4989 #if defined(TCC_TARGET_ARM) && !defined(TCC_ARM_VFP)
4993 /* XXX: unify with initializers handling ? */
4994 /* CPUs usually cannot use float constants, so we store them
4995 generically in data segment */
4996 size
= type_size(&vtop
->type
, &align
);
4997 offset
= (data_section
->data_offset
+ align
- 1) & -align
;
4998 data_section
->data_offset
= offset
;
4999 /* XXX: not portable yet */
5000 #if defined(__i386__) || defined(__x86_64__)
5001 /* Zero pad x87 tenbyte long doubles */
5002 if (size
== LDOUBLE_SIZE
)
5003 vtop
->c
.tab
[2] &= 0xffff;
5005 ptr
= section_ptr_add(data_section
, size
);
5007 #if defined(TCC_TARGET_ARM) && !defined(TCC_ARM_VFP)
5011 ptr
[i
] = vtop
->c
.tab
[size
-1-i
];
5015 ptr
[i
] = vtop
->c
.tab
[i
];
5016 sym
= get_sym_ref(&vtop
->type
, data_section
, offset
, size
<< 2);
5017 vtop
->r
|= VT_LVAL
| VT_SYM
;
5021 #ifdef CONFIG_TCC_BCHECK
5022 if (vtop
->r
& VT_MUSTBOUND
)
5026 r
= vtop
->r
& VT_VALMASK
;
5030 /* need to reload if:
5032 - lvalue (need to dereference pointer)
5033 - already a register, but not in the right class */
5034 if (r
>= VT_CONST
||
5035 (vtop
->r
& VT_LVAL
) ||
5036 !(reg_classes
[r
] & rc
) ||
5037 ((vtop
->type
.t
& VT_BTYPE
) == VT_LLONG
&&
5038 !(reg_classes
[vtop
->r2
] & rc2
))) {
5040 #ifndef TCC_TARGET_X86_64
5041 if ((vtop
->type
.t
& VT_BTYPE
) == VT_LLONG
) {
5043 unsigned long long ll
;
5044 /* two register type load : expand to two words
5046 if ((vtop
->r
& (VT_VALMASK
| VT_LVAL
)) == VT_CONST
) {
5049 vtop
->c
.ui
= ll
; /* first word */
5051 vtop
->r
= r
; /* save register value */
5052 vpushi(ll
>> 32); /* second word */
5053 } else if (r
>= VT_CONST
|| /* XXX: test to VT_CONST incorrect ? */
5054 (vtop
->r
& VT_LVAL
)) {
5055 /* We do not want to modifier the long long
5056 pointer here, so the safest (and less
5057 efficient) is to save all the other registers
5058 in the stack. XXX: totally inefficient. */
5060 /* load from memory */
5063 vtop
[-1].r
= r
; /* save register value */
5064 /* increment pointer to get second word */
5065 vtop
->type
.t
= VT_INT
;
5071 /* move registers */
5074 vtop
[-1].r
= r
; /* save register value */
5075 vtop
->r
= vtop
[-1].r2
;
5077 /* allocate second register */
5081 /* write second register */
5085 if ((vtop
->r
& VT_LVAL
) && !is_float(vtop
->type
.t
)) {
5087 /* lvalue of scalar type : need to use lvalue type
5088 because of possible cast */
5091 /* compute memory access type */
5092 if (vtop
->r
& VT_LVAL_BYTE
)
5094 else if (vtop
->r
& VT_LVAL_SHORT
)
5096 if (vtop
->r
& VT_LVAL_UNSIGNED
)
5100 /* restore wanted type */
5103 /* one register type load */
5108 #ifdef TCC_TARGET_C67
5109 /* uses register pairs for doubles */
5110 if ((vtop
->type
.t
& VT_BTYPE
) == VT_DOUBLE
)
5117 /* generate vtop[-1] and vtop[0] in resp. classes rc1 and rc2 */
5118 void gv2(int rc1
, int rc2
)
5122 /* generate more generic register first. But VT_JMP or VT_CMP
5123 values must be generated first in all cases to avoid possible
5125 v
= vtop
[0].r
& VT_VALMASK
;
5126 if (v
!= VT_CMP
&& (v
& ~1) != VT_JMP
&& rc1
<= rc2
) {
5131 /* test if reload is needed for first register */
5132 if ((vtop
[-1].r
& VT_VALMASK
) >= VT_CONST
) {
5142 /* test if reload is needed for first register */
5143 if ((vtop
[0].r
& VT_VALMASK
) >= VT_CONST
) {
5149 /* expand long long on stack in two int registers */
5154 u
= vtop
->type
.t
& VT_UNSIGNED
;
5157 vtop
[0].r
= vtop
[-1].r2
;
5158 vtop
[0].r2
= VT_CONST
;
5159 vtop
[-1].r2
= VT_CONST
;
5160 vtop
[0].type
.t
= VT_INT
| u
;
5161 vtop
[-1].type
.t
= VT_INT
| u
;
5164 #ifdef TCC_TARGET_ARM
5165 /* expand long long on stack */
5166 void lexpand_nr(void)
5170 u
= vtop
->type
.t
& VT_UNSIGNED
;
5172 vtop
->r2
= VT_CONST
;
5173 vtop
->type
.t
= VT_INT
| u
;
5174 v
=vtop
[-1].r
& (VT_VALMASK
| VT_LVAL
);
5175 if (v
== VT_CONST
) {
5176 vtop
[-1].c
.ui
= vtop
->c
.ull
;
5177 vtop
->c
.ui
= vtop
->c
.ull
>> 32;
5179 } else if (v
== (VT_LVAL
|VT_CONST
) || v
== (VT_LVAL
|VT_LOCAL
)) {
5181 vtop
->r
= vtop
[-1].r
;
5182 } else if (v
> VT_CONST
) {
5186 vtop
->r
= vtop
[-1].r2
;
5187 vtop
[-1].r2
= VT_CONST
;
5188 vtop
[-1].type
.t
= VT_INT
| u
;
5192 /* build a long long from two ints */
5195 gv2(RC_INT
, RC_INT
);
5196 vtop
[-1].r2
= vtop
[0].r
;
5197 vtop
[-1].type
.t
= t
;
5201 /* rotate n first stack elements to the bottom
5202 I1 ... In -> I2 ... In I1 [top is right]
5210 for(i
=-n
+1;i
!=0;i
++)
5211 vtop
[i
] = vtop
[i
+1];
5215 /* rotate n first stack elements to the top
5216 I1 ... In -> In I1 ... I(n-1) [top is right]
5224 for(i
= 0;i
< n
- 1; i
++)
5225 vtop
[-i
] = vtop
[-i
- 1];
5229 #ifdef TCC_TARGET_ARM
5230 /* like vrott but in other direction
5231 In ... I1 -> I(n-1) ... I1 In [top is right]
5239 for(i
= n
- 1; i
> 0; i
--)
5240 vtop
[-i
] = vtop
[-i
+ 1];
5245 /* pop stack value */
5249 v
= vtop
->r
& VT_VALMASK
;
5250 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
5251 /* for x86, we need to pop the FP stack */
5252 if (v
== TREG_ST0
&& !nocode_wanted
) {
5253 o(0xd9dd); /* fstp %st(1) */
5256 if (v
== VT_JMP
|| v
== VT_JMPI
) {
5257 /* need to put correct jump if && or || without test */
5263 /* convert stack entry to register and duplicate its value in another
5271 if ((t
& VT_BTYPE
) == VT_LLONG
) {
5278 /* stack: H L L1 H1 */
5286 /* duplicate value */
5291 #ifdef TCC_TARGET_X86_64
5292 if ((t
& VT_BTYPE
) == VT_LDOUBLE
) {
5302 load(r1
, &sv
); /* move r to r1 */
5304 /* duplicates value */
5309 #ifndef TCC_TARGET_X86_64
5310 /* generate CPU independent (unsigned) long long operations */
5311 void gen_opl(int op
)
5313 int t
, a
, b
, op1
, c
, i
;
5315 unsigned short reg_iret
= REG_IRET
;
5316 unsigned short reg_lret
= REG_LRET
;
5322 func
= TOK___divdi3
;
5325 func
= TOK___udivdi3
;
5328 func
= TOK___moddi3
;
5331 func
= TOK___umoddi3
;
5338 /* call generic long long function */
5339 vpush_global_sym(&func_old_type
, func
);
5344 vtop
->r2
= reg_lret
;
5357 /* stack: L1 H1 L2 H2 */
5362 vtop
[-2] = vtop
[-3];
5365 /* stack: H1 H2 L1 L2 */
5371 /* stack: H1 H2 L1 L2 ML MH */
5374 /* stack: ML MH H1 H2 L1 L2 */
5378 /* stack: ML MH H1 L2 H2 L1 */
5383 /* stack: ML MH M1 M2 */
5386 } else if (op
== '+' || op
== '-') {
5387 /* XXX: add non carry method too (for MIPS or alpha) */
5393 /* stack: H1 H2 (L1 op L2) */
5396 gen_op(op1
+ 1); /* TOK_xxxC2 */
5399 /* stack: H1 H2 (L1 op L2) */
5402 /* stack: (L1 op L2) H1 H2 */
5404 /* stack: (L1 op L2) (H1 op H2) */
5412 if ((vtop
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
) {
5413 t
= vtop
[-1].type
.t
;
5417 /* stack: L H shift */
5419 /* constant: simpler */
5420 /* NOTE: all comments are for SHL. the other cases are
5421 done by swaping words */
5432 if (op
!= TOK_SAR
) {
5465 /* XXX: should provide a faster fallback on x86 ? */
5468 func
= TOK___ashrdi3
;
5471 func
= TOK___lshrdi3
;
5474 func
= TOK___ashldi3
;
5480 /* compare operations */
5486 /* stack: L1 H1 L2 H2 */
5488 vtop
[-1] = vtop
[-2];
5490 /* stack: L1 L2 H1 H2 */
5493 /* when values are equal, we need to compare low words. since
5494 the jump is inverted, we invert the test too. */
5497 else if (op1
== TOK_GT
)
5499 else if (op1
== TOK_ULT
)
5501 else if (op1
== TOK_UGT
)
5506 if (op1
!= TOK_NE
) {
5510 /* generate non equal test */
5511 /* XXX: NOT PORTABLE yet */
5515 #if defined(TCC_TARGET_I386)
5516 b
= psym(0x850f, 0);
5517 #elif defined(TCC_TARGET_ARM)
5519 o(0x1A000000 | encbranch(ind
, 0, 1));
5520 #elif defined(TCC_TARGET_C67)
5521 error("not implemented");
5523 #error not supported
5527 /* compare low. Always unsigned */
5531 else if (op1
== TOK_LE
)
5533 else if (op1
== TOK_GT
)
5535 else if (op1
== TOK_GE
)
5546 /* handle integer constant optimizations and various machine
5548 void gen_opic(int op
)
5550 int c1
, c2
, t1
, t2
, n
;
5553 typedef unsigned long long U
;
5557 t1
= v1
->type
.t
& VT_BTYPE
;
5558 t2
= v2
->type
.t
& VT_BTYPE
;
5559 l1
= (t1
== VT_LLONG
) ? v1
->c
.ll
: v1
->c
.i
;
5560 l2
= (t2
== VT_LLONG
) ? v2
->c
.ll
: v2
->c
.i
;
5562 /* currently, we cannot do computations with forward symbols */
5563 c1
= (v1
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
;
5564 c2
= (v2
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
;
5567 case '+': l1
+= l2
; break;
5568 case '-': l1
-= l2
; break;
5569 case '&': l1
&= l2
; break;
5570 case '^': l1
^= l2
; break;
5571 case '|': l1
|= l2
; break;
5572 case '*': l1
*= l2
; break;
5579 /* if division by zero, generate explicit division */
5582 error("division by zero in constant");
5586 default: l1
/= l2
; break;
5587 case '%': l1
%= l2
; break;
5588 case TOK_UDIV
: l1
= (U
)l1
/ l2
; break;
5589 case TOK_UMOD
: l1
= (U
)l1
% l2
; break;
5592 case TOK_SHL
: l1
<<= l2
; break;
5593 case TOK_SHR
: l1
= (U
)l1
>> l2
; break;
5594 case TOK_SAR
: l1
>>= l2
; break;
5596 case TOK_ULT
: l1
= (U
)l1
< (U
)l2
; break;
5597 case TOK_UGE
: l1
= (U
)l1
>= (U
)l2
; break;
5598 case TOK_EQ
: l1
= l1
== l2
; break;
5599 case TOK_NE
: l1
= l1
!= l2
; break;
5600 case TOK_ULE
: l1
= (U
)l1
<= (U
)l2
; break;
5601 case TOK_UGT
: l1
= (U
)l1
> (U
)l2
; break;
5602 case TOK_LT
: l1
= l1
< l2
; break;
5603 case TOK_GE
: l1
= l1
>= l2
; break;
5604 case TOK_LE
: l1
= l1
<= l2
; break;
5605 case TOK_GT
: l1
= l1
> l2
; break;
5607 case TOK_LAND
: l1
= l1
&& l2
; break;
5608 case TOK_LOR
: l1
= l1
|| l2
; break;
5615 /* if commutative ops, put c2 as constant */
5616 if (c1
&& (op
== '+' || op
== '&' || op
== '^' ||
5617 op
== '|' || op
== '*')) {
5619 c2
= c1
; //c = c1, c1 = c2, c2 = c;
5620 l2
= l1
; //l = l1, l1 = l2, l2 = l;
5622 /* Filter out NOP operations like x*1, x-0, x&-1... */
5623 if (c2
&& (((op
== '*' || op
== '/' || op
== TOK_UDIV
||
5626 ((op
== '+' || op
== '-' || op
== '|' || op
== '^' ||
5627 op
== TOK_SHL
|| op
== TOK_SHR
|| op
== TOK_SAR
) &&
5633 } else if (c2
&& (op
== '*' || op
== TOK_PDIV
|| op
== TOK_UDIV
)) {
5634 /* try to use shifts instead of muls or divs */
5635 if (l2
> 0 && (l2
& (l2
- 1)) == 0) {
5644 else if (op
== TOK_PDIV
)
5650 } else if (c2
&& (op
== '+' || op
== '-') &&
5651 ((vtop
[-1].r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) ==
5652 (VT_CONST
| VT_SYM
) ||
5653 (vtop
[-1].r
& (VT_VALMASK
| VT_LVAL
)) == VT_LOCAL
)) {
5654 /* symbol + constant case */
5661 if (!nocode_wanted
) {
5662 /* call low level op generator */
5663 if (t1
== VT_LLONG
|| t2
== VT_LLONG
)
5674 /* generate a floating point operation with constant propagation */
5675 void gen_opif(int op
)
5683 /* currently, we cannot do computations with forward symbols */
5684 c1
= (v1
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
;
5685 c2
= (v2
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
;
5687 if (v1
->type
.t
== VT_FLOAT
) {
5690 } else if (v1
->type
.t
== VT_DOUBLE
) {
5698 /* NOTE: we only do constant propagation if finite number (not
5699 NaN or infinity) (ANSI spec) */
5700 if (!ieee_finite(f1
) || !ieee_finite(f2
))
5704 case '+': f1
+= f2
; break;
5705 case '-': f1
-= f2
; break;
5706 case '*': f1
*= f2
; break;
5710 error("division by zero in constant");
5715 /* XXX: also handles tests ? */
5719 /* XXX: overflow test ? */
5720 if (v1
->type
.t
== VT_FLOAT
) {
5722 } else if (v1
->type
.t
== VT_DOUBLE
) {
5730 if (!nocode_wanted
) {
5738 static int pointed_size(CType
*type
)
5741 return type_size(pointed_type(type
), &align
);
5744 static inline int is_null_pointer(SValue
*p
)
5746 if ((p
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) != VT_CONST
)
5748 return ((p
->type
.t
& VT_BTYPE
) == VT_INT
&& p
->c
.i
== 0) ||
5749 ((p
->type
.t
& VT_BTYPE
) == VT_LLONG
&& p
->c
.ll
== 0);
5752 static inline int is_integer_btype(int bt
)
5754 return (bt
== VT_BYTE
|| bt
== VT_SHORT
||
5755 bt
== VT_INT
|| bt
== VT_LLONG
);
5758 /* check types for comparison or substraction of pointers */
5759 static void check_comparison_pointer_types(SValue
*p1
, SValue
*p2
, int op
)
5761 CType
*type1
, *type2
, tmp_type1
, tmp_type2
;
5764 /* null pointers are accepted for all comparisons as gcc */
5765 if (is_null_pointer(p1
) || is_null_pointer(p2
))
5769 bt1
= type1
->t
& VT_BTYPE
;
5770 bt2
= type2
->t
& VT_BTYPE
;
5771 /* accept comparison between pointer and integer with a warning */
5772 if ((is_integer_btype(bt1
) || is_integer_btype(bt2
)) && op
!= '-') {
5773 if (op
!= TOK_LOR
&& op
!= TOK_LAND
)
5774 warning("comparison between pointer and integer");
5778 /* both must be pointers or implicit function pointers */
5779 if (bt1
== VT_PTR
) {
5780 type1
= pointed_type(type1
);
5781 } else if (bt1
!= VT_FUNC
)
5782 goto invalid_operands
;
5784 if (bt2
== VT_PTR
) {
5785 type2
= pointed_type(type2
);
5786 } else if (bt2
!= VT_FUNC
) {
5788 error("invalid operands to binary %s", get_tok_str(op
, NULL
));
5790 if ((type1
->t
& VT_BTYPE
) == VT_VOID
||
5791 (type2
->t
& VT_BTYPE
) == VT_VOID
)
5795 tmp_type1
.t
&= ~(VT_UNSIGNED
| VT_CONSTANT
| VT_VOLATILE
);
5796 tmp_type2
.t
&= ~(VT_UNSIGNED
| VT_CONSTANT
| VT_VOLATILE
);
5797 if (!is_compatible_types(&tmp_type1
, &tmp_type2
)) {
5798 /* gcc-like error if '-' is used */
5800 goto invalid_operands
;
5802 warning("comparison of distinct pointer types lacks a cast");
5806 /* generic gen_op: handles types problems */
5809 int u
, t1
, t2
, bt1
, bt2
, t
;
5812 t1
= vtop
[-1].type
.t
;
5813 t2
= vtop
[0].type
.t
;
5814 bt1
= t1
& VT_BTYPE
;
5815 bt2
= t2
& VT_BTYPE
;
5817 if (bt1
== VT_PTR
|| bt2
== VT_PTR
) {
5818 /* at least one operand is a pointer */
5819 /* relationnal op: must be both pointers */
5820 if (op
>= TOK_ULT
&& op
<= TOK_LOR
) {
5821 check_comparison_pointer_types(vtop
- 1, vtop
, op
);
5822 /* pointers are handled are unsigned */
5823 #ifdef TCC_TARGET_X86_64
5824 t
= VT_LLONG
| VT_UNSIGNED
;
5826 t
= VT_INT
| VT_UNSIGNED
;
5830 /* if both pointers, then it must be the '-' op */
5831 if (bt1
== VT_PTR
&& bt2
== VT_PTR
) {
5833 error("cannot use pointers here");
5834 check_comparison_pointer_types(vtop
- 1, vtop
, op
);
5835 /* XXX: check that types are compatible */
5836 u
= pointed_size(&vtop
[-1].type
);
5838 /* set to integer type */
5839 #ifdef TCC_TARGET_X86_64
5840 vtop
->type
.t
= VT_LLONG
;
5842 vtop
->type
.t
= VT_INT
;
5847 /* exactly one pointer : must be '+' or '-'. */
5848 if (op
!= '-' && op
!= '+')
5849 error("cannot use pointers here");
5850 /* Put pointer as first operand */
5851 if (bt2
== VT_PTR
) {
5855 type1
= vtop
[-1].type
;
5856 #ifdef TCC_TARGET_X86_64
5861 cval
.ull
= pointed_size(&vtop
[-1].type
);
5862 vsetc(&ctype
, VT_CONST
, &cval
);
5865 /* XXX: cast to int ? (long long case) */
5866 vpushi(pointed_size(&vtop
[-1].type
));
5869 #ifdef CONFIG_TCC_BCHECK
5870 /* if evaluating constant expression, no code should be
5871 generated, so no bound check */
5872 if (do_bounds_check
&& !const_wanted
) {
5873 /* if bounded pointers, we generate a special code to
5880 gen_bounded_ptr_add();
5886 /* put again type if gen_opic() swaped operands */
5889 } else if (is_float(bt1
) || is_float(bt2
)) {
5890 /* compute bigger type and do implicit casts */
5891 if (bt1
== VT_LDOUBLE
|| bt2
== VT_LDOUBLE
) {
5893 } else if (bt1
== VT_DOUBLE
|| bt2
== VT_DOUBLE
) {
5898 /* floats can only be used for a few operations */
5899 if (op
!= '+' && op
!= '-' && op
!= '*' && op
!= '/' &&
5900 (op
< TOK_ULT
|| op
> TOK_GT
))
5901 error("invalid operands for binary operation");
5903 } else if (bt1
== VT_LLONG
|| bt2
== VT_LLONG
) {
5904 /* cast to biggest op */
5906 /* convert to unsigned if it does not fit in a long long */
5907 if ((t1
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_LLONG
| VT_UNSIGNED
) ||
5908 (t2
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_LLONG
| VT_UNSIGNED
))
5912 /* integer operations */
5914 /* convert to unsigned if it does not fit in an integer */
5915 if ((t1
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_INT
| VT_UNSIGNED
) ||
5916 (t2
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_INT
| VT_UNSIGNED
))
5919 /* XXX: currently, some unsigned operations are explicit, so
5920 we modify them here */
5921 if (t
& VT_UNSIGNED
) {
5928 else if (op
== TOK_LT
)
5930 else if (op
== TOK_GT
)
5932 else if (op
== TOK_LE
)
5934 else if (op
== TOK_GE
)
5941 /* special case for shifts and long long: we keep the shift as
5943 if (op
== TOK_SHR
|| op
== TOK_SAR
|| op
== TOK_SHL
)
5950 if (op
>= TOK_ULT
&& op
<= TOK_GT
) {
5951 /* relationnal op: the result is an int */
5952 vtop
->type
.t
= VT_INT
;
5959 #ifndef TCC_TARGET_ARM
5960 /* generic itof for unsigned long long case */
5961 void gen_cvt_itof1(int t
)
5963 if ((vtop
->type
.t
& (VT_BTYPE
| VT_UNSIGNED
)) ==
5964 (VT_LLONG
| VT_UNSIGNED
)) {
5967 vpush_global_sym(&func_old_type
, TOK___floatundisf
);
5968 #if LDOUBLE_SIZE != 8
5969 else if (t
== VT_LDOUBLE
)
5970 vpush_global_sym(&func_old_type
, TOK___floatundixf
);
5973 vpush_global_sym(&func_old_type
, TOK___floatundidf
);
5984 /* generic ftoi for unsigned long long case */
5985 void gen_cvt_ftoi1(int t
)
5989 if (t
== (VT_LLONG
| VT_UNSIGNED
)) {
5990 /* not handled natively */
5991 st
= vtop
->type
.t
& VT_BTYPE
;
5993 vpush_global_sym(&func_old_type
, TOK___fixunssfdi
);
5994 #if LDOUBLE_SIZE != 8
5995 else if (st
== VT_LDOUBLE
)
5996 vpush_global_sym(&func_old_type
, TOK___fixunsxfdi
);
5999 vpush_global_sym(&func_old_type
, TOK___fixunsdfdi
);
6004 vtop
->r2
= REG_LRET
;
6010 /* force char or short cast */
6011 void force_charshort_cast(int t
)
6015 /* XXX: add optimization if lvalue : just change type and offset */
6020 if (t
& VT_UNSIGNED
) {
6021 vpushi((1 << bits
) - 1);
6027 /* result must be signed or the SAR is converted to an SHL
6028 This was not the case when "t" was a signed short
6029 and the last value on the stack was an unsigned int */
6030 vtop
->type
.t
&= ~VT_UNSIGNED
;
6036 /* cast 'vtop' to 'type'. Casting to bitfields is forbidden. */
6037 static void gen_cast(CType
*type
)
6039 int sbt
, dbt
, sf
, df
, c
, p
;
6041 /* special delayed cast for char/short */
6042 /* XXX: in some cases (multiple cascaded casts), it may still
6044 if (vtop
->r
& VT_MUSTCAST
) {
6045 vtop
->r
&= ~VT_MUSTCAST
;
6046 force_charshort_cast(vtop
->type
.t
);
6049 /* bitfields first get cast to ints */
6050 if (vtop
->type
.t
& VT_BITFIELD
) {
6054 dbt
= type
->t
& (VT_BTYPE
| VT_UNSIGNED
);
6055 sbt
= vtop
->type
.t
& (VT_BTYPE
| VT_UNSIGNED
);
6060 c
= (vtop
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
;
6061 p
= (vtop
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == (VT_CONST
| VT_SYM
);
6063 /* constant case: we can do it now */
6064 /* XXX: in ISOC, cannot do it if error in convert */
6065 if (sbt
== VT_FLOAT
)
6066 vtop
->c
.ld
= vtop
->c
.f
;
6067 else if (sbt
== VT_DOUBLE
)
6068 vtop
->c
.ld
= vtop
->c
.d
;
6071 if ((sbt
& VT_BTYPE
) == VT_LLONG
) {
6072 if (sbt
& VT_UNSIGNED
)
6073 vtop
->c
.ld
= vtop
->c
.ull
;
6075 vtop
->c
.ld
= vtop
->c
.ll
;
6077 if (sbt
& VT_UNSIGNED
)
6078 vtop
->c
.ld
= vtop
->c
.ui
;
6080 vtop
->c
.ld
= vtop
->c
.i
;
6083 if (dbt
== VT_FLOAT
)
6084 vtop
->c
.f
= (float)vtop
->c
.ld
;
6085 else if (dbt
== VT_DOUBLE
)
6086 vtop
->c
.d
= (double)vtop
->c
.ld
;
6087 } else if (sf
&& dbt
== (VT_LLONG
|VT_UNSIGNED
)) {
6088 vtop
->c
.ull
= (unsigned long long)vtop
->c
.ld
;
6089 } else if (sf
&& dbt
== VT_BOOL
) {
6090 vtop
->c
.i
= (vtop
->c
.ld
!= 0);
6093 vtop
->c
.ll
= (long long)vtop
->c
.ld
;
6094 else if (sbt
== (VT_LLONG
|VT_UNSIGNED
))
6095 vtop
->c
.ll
= vtop
->c
.ull
;
6096 else if (sbt
& VT_UNSIGNED
)
6097 vtop
->c
.ll
= vtop
->c
.ui
;
6098 else if (sbt
!= VT_LLONG
)
6099 vtop
->c
.ll
= vtop
->c
.i
;
6101 if (dbt
== (VT_LLONG
|VT_UNSIGNED
))
6102 vtop
->c
.ull
= vtop
->c
.ll
;
6103 else if (dbt
== VT_BOOL
)
6104 vtop
->c
.i
= (vtop
->c
.ll
!= 0);
6105 else if (dbt
!= VT_LLONG
) {
6107 if ((dbt
& VT_BTYPE
) == VT_BYTE
)
6109 else if ((dbt
& VT_BTYPE
) == VT_SHORT
)
6112 if(dbt
& VT_UNSIGNED
)
6113 vtop
->c
.ui
= ((unsigned int)vtop
->c
.ll
<< s
) >> s
;
6115 vtop
->c
.i
= ((int)vtop
->c
.ll
<< s
) >> s
;
6118 } else if (p
&& dbt
== VT_BOOL
) {
6121 } else if (!nocode_wanted
) {
6122 /* non constant case: generate code */
6124 /* convert from fp to fp */
6127 /* convert int to fp */
6130 /* convert fp to int */
6131 if (dbt
== VT_BOOL
) {
6135 /* we handle char/short/etc... with generic code */
6136 if (dbt
!= (VT_INT
| VT_UNSIGNED
) &&
6137 dbt
!= (VT_LLONG
| VT_UNSIGNED
) &&
6141 if (dbt
== VT_INT
&& (type
->t
& (VT_BTYPE
| VT_UNSIGNED
)) != dbt
) {
6142 /* additional cast for char/short... */
6147 } else if ((dbt
& VT_BTYPE
) == VT_LLONG
) {
6148 if ((sbt
& VT_BTYPE
) != VT_LLONG
) {
6149 /* scalar to long long */
6150 #ifndef TCC_TARGET_X86_64
6151 /* machine independent conversion */
6153 /* generate high word */
6154 if (sbt
== (VT_INT
| VT_UNSIGNED
)) {
6162 /* patch second register */
6163 vtop
[-1].r2
= vtop
->r
;
6167 if (sbt
!= (VT_INT
| VT_UNSIGNED
)) {
6168 /* x86_64 specific: movslq */
6170 o(0xc0 + (REG_VALUE(r
) << 3) + REG_VALUE(r
));
6174 } else if (dbt
== VT_BOOL
) {
6175 /* scalar to bool */
6178 } else if ((dbt
& VT_BTYPE
) == VT_BYTE
||
6179 (dbt
& VT_BTYPE
) == VT_SHORT
) {
6180 if (sbt
== VT_PTR
) {
6181 vtop
->type
.t
= VT_INT
;
6182 warning("nonportable conversion from pointer to char/short");
6184 force_charshort_cast(dbt
);
6185 } else if ((dbt
& VT_BTYPE
) == VT_INT
) {
6187 if (sbt
== VT_LLONG
) {
6188 /* from long long: just take low order word */
6192 /* if lvalue and single word type, nothing to do because
6193 the lvalue already contains the real type size (see
6194 VT_LVAL_xxx constants) */
6197 } else if ((dbt
& VT_BTYPE
) == VT_PTR
&& !(vtop
->r
& VT_LVAL
)) {
6198 /* if we are casting between pointer types,
6199 we must update the VT_LVAL_xxx size */
6200 vtop
->r
= (vtop
->r
& ~VT_LVAL_TYPE
)
6201 | (lvalue_type(type
->ref
->type
.t
) & VT_LVAL_TYPE
);
6206 /* return type size. Put alignment at 'a' */
6207 static int type_size(CType
*type
, int *a
)
6212 bt
= type
->t
& VT_BTYPE
;
6213 if (bt
== VT_STRUCT
) {
6218 } else if (bt
== VT_PTR
) {
6219 if (type
->t
& VT_ARRAY
) {
6221 return type_size(&s
->type
, a
) * s
->c
;
6226 } else if (bt
== VT_LDOUBLE
) {
6228 return LDOUBLE_SIZE
;
6229 } else if (bt
== VT_DOUBLE
|| bt
== VT_LLONG
) {
6230 #ifdef TCC_TARGET_I386
6232 #elif defined(TCC_TARGET_ARM)
6242 } else if (bt
== VT_INT
|| bt
== VT_ENUM
|| bt
== VT_FLOAT
) {
6245 } else if (bt
== VT_SHORT
) {
6249 /* char, void, function, _Bool */
6255 /* return the pointed type of t */
6256 static inline CType
*pointed_type(CType
*type
)
6258 return &type
->ref
->type
;
6261 /* modify type so that its it is a pointer to type. */
6262 static void mk_pointer(CType
*type
)
6265 s
= sym_push(SYM_FIELD
, type
, 0, -1);
6266 type
->t
= VT_PTR
| (type
->t
& ~VT_TYPE
);
6270 /* compare function types. OLD functions match any new functions */
6271 static int is_compatible_func(CType
*type1
, CType
*type2
)
6277 if (!is_compatible_types(&s1
->type
, &s2
->type
))
6279 /* check func_call */
6280 if (FUNC_CALL(s1
->r
) != FUNC_CALL(s2
->r
))
6282 /* XXX: not complete */
6283 if (s1
->c
== FUNC_OLD
|| s2
->c
== FUNC_OLD
)
6287 while (s1
!= NULL
) {
6290 if (!is_compatible_parameter_types(&s1
->type
, &s2
->type
))
6300 /* return true if type1 and type2 are the same. If unqualified is
6301 true, qualifiers on the types are ignored.
6303 - enums are not checked as gcc __builtin_types_compatible_p ()
6305 static int compare_types(CType
*type1
, CType
*type2
, int unqualified
)
6309 t1
= type1
->t
& VT_TYPE
;
6310 t2
= type2
->t
& VT_TYPE
;
6312 /* strip qualifiers before comparing */
6313 t1
&= ~(VT_CONSTANT
| VT_VOLATILE
);
6314 t2
&= ~(VT_CONSTANT
| VT_VOLATILE
);
6316 /* XXX: bitfields ? */
6319 /* test more complicated cases */
6320 bt1
= t1
& VT_BTYPE
;
6321 if (bt1
== VT_PTR
) {
6322 type1
= pointed_type(type1
);
6323 type2
= pointed_type(type2
);
6324 return is_compatible_types(type1
, type2
);
6325 } else if (bt1
== VT_STRUCT
) {
6326 return (type1
->ref
== type2
->ref
);
6327 } else if (bt1
== VT_FUNC
) {
6328 return is_compatible_func(type1
, type2
);
6334 /* return true if type1 and type2 are exactly the same (including
6337 static int is_compatible_types(CType
*type1
, CType
*type2
)
6339 return compare_types(type1
,type2
,0);
6342 /* return true if type1 and type2 are the same (ignoring qualifiers).
6344 static int is_compatible_parameter_types(CType
*type1
, CType
*type2
)
6346 return compare_types(type1
,type2
,1);
6349 /* print a type. If 'varstr' is not NULL, then the variable is also
6350 printed in the type */
6352 /* XXX: add array and function pointers */
6353 void type_to_str(char *buf
, int buf_size
,
6354 CType
*type
, const char *varstr
)
6361 t
= type
->t
& VT_TYPE
;
6364 if (t
& VT_CONSTANT
)
6365 pstrcat(buf
, buf_size
, "const ");
6366 if (t
& VT_VOLATILE
)
6367 pstrcat(buf
, buf_size
, "volatile ");
6368 if (t
& VT_UNSIGNED
)
6369 pstrcat(buf
, buf_size
, "unsigned ");
6399 tstr
= "long double";
6401 pstrcat(buf
, buf_size
, tstr
);
6405 if (bt
== VT_STRUCT
)
6409 pstrcat(buf
, buf_size
, tstr
);
6410 v
= type
->ref
->v
& ~SYM_STRUCT
;
6411 if (v
>= SYM_FIRST_ANOM
)
6412 pstrcat(buf
, buf_size
, "<anonymous>");
6414 pstrcat(buf
, buf_size
, get_tok_str(v
, NULL
));
6418 type_to_str(buf
, buf_size
, &s
->type
, varstr
);
6419 pstrcat(buf
, buf_size
, "(");
6421 while (sa
!= NULL
) {
6422 type_to_str(buf1
, sizeof(buf1
), &sa
->type
, NULL
);
6423 pstrcat(buf
, buf_size
, buf1
);
6426 pstrcat(buf
, buf_size
, ", ");
6428 pstrcat(buf
, buf_size
, ")");
6432 pstrcpy(buf1
, sizeof(buf1
), "*");
6434 pstrcat(buf1
, sizeof(buf1
), varstr
);
6435 type_to_str(buf
, buf_size
, &s
->type
, buf1
);
6439 pstrcat(buf
, buf_size
, " ");
6440 pstrcat(buf
, buf_size
, varstr
);
6445 /* verify type compatibility to store vtop in 'dt' type, and generate
6447 static void gen_assign_cast(CType
*dt
)
6449 CType
*st
, *type1
, *type2
, tmp_type1
, tmp_type2
;
6450 char buf1
[256], buf2
[256];
6453 st
= &vtop
->type
; /* source type */
6454 dbt
= dt
->t
& VT_BTYPE
;
6455 sbt
= st
->t
& VT_BTYPE
;
6456 if (dt
->t
& VT_CONSTANT
)
6457 warning("assignment of read-only location");
6460 /* special cases for pointers */
6461 /* '0' can also be a pointer */
6462 if (is_null_pointer(vtop
))
6464 /* accept implicit pointer to integer cast with warning */
6465 if (is_integer_btype(sbt
)) {
6466 warning("assignment makes pointer from integer without a cast");
6469 type1
= pointed_type(dt
);
6470 /* a function is implicitely a function pointer */
6471 if (sbt
== VT_FUNC
) {
6472 if ((type1
->t
& VT_BTYPE
) != VT_VOID
&&
6473 !is_compatible_types(pointed_type(dt
), st
))
6480 type2
= pointed_type(st
);
6481 if ((type1
->t
& VT_BTYPE
) == VT_VOID
||
6482 (type2
->t
& VT_BTYPE
) == VT_VOID
) {
6483 /* void * can match anything */
6485 /* exact type match, except for unsigned */
6488 tmp_type1
.t
&= ~(VT_UNSIGNED
| VT_CONSTANT
| VT_VOLATILE
);
6489 tmp_type2
.t
&= ~(VT_UNSIGNED
| VT_CONSTANT
| VT_VOLATILE
);
6490 if (!is_compatible_types(&tmp_type1
, &tmp_type2
))
6491 warning("assignment from incompatible pointer type");
6493 /* check const and volatile */
6494 if ((!(type1
->t
& VT_CONSTANT
) && (type2
->t
& VT_CONSTANT
)) ||
6495 (!(type1
->t
& VT_VOLATILE
) && (type2
->t
& VT_VOLATILE
)))
6496 warning("assignment discards qualifiers from pointer target type");
6502 if (sbt
== VT_PTR
|| sbt
== VT_FUNC
) {
6503 warning("assignment makes integer from pointer without a cast");
6505 /* XXX: more tests */
6510 tmp_type1
.t
&= ~(VT_CONSTANT
| VT_VOLATILE
);
6511 tmp_type2
.t
&= ~(VT_CONSTANT
| VT_VOLATILE
);
6512 if (!is_compatible_types(&tmp_type1
, &tmp_type2
)) {
6514 type_to_str(buf1
, sizeof(buf1
), st
, NULL
);
6515 type_to_str(buf2
, sizeof(buf2
), dt
, NULL
);
6516 error("cannot cast '%s' to '%s'", buf1
, buf2
);
6524 /* store vtop in lvalue pushed on stack */
6527 int sbt
, dbt
, ft
, r
, t
, size
, align
, bit_size
, bit_pos
, rc
, delayed_cast
;
6529 ft
= vtop
[-1].type
.t
;
6530 sbt
= vtop
->type
.t
& VT_BTYPE
;
6531 dbt
= ft
& VT_BTYPE
;
6532 if (((sbt
== VT_INT
|| sbt
== VT_SHORT
) && dbt
== VT_BYTE
) ||
6533 (sbt
== VT_INT
&& dbt
== VT_SHORT
)) {
6534 /* optimize char/short casts */
6535 delayed_cast
= VT_MUSTCAST
;
6536 vtop
->type
.t
= ft
& (VT_TYPE
& ~(VT_BITFIELD
| (-1 << VT_STRUCT_SHIFT
)));
6537 /* XXX: factorize */
6538 if (ft
& VT_CONSTANT
)
6539 warning("assignment of read-only location");
6542 if (!(ft
& VT_BITFIELD
))
6543 gen_assign_cast(&vtop
[-1].type
);
6546 if (sbt
== VT_STRUCT
) {
6547 /* if structure, only generate pointer */
6548 /* structure assignment : generate memcpy */
6549 /* XXX: optimize if small size */
6550 if (!nocode_wanted
) {
6551 size
= type_size(&vtop
->type
, &align
);
6555 vpush_global_sym(&func_old_type
, TOK_memcpy8
);
6556 else if(!(align
& 3))
6557 vpush_global_sym(&func_old_type
, TOK_memcpy4
);
6560 vpush_global_sym(&func_old_type
, TOK_memcpy
);
6564 vtop
->type
.t
= VT_INT
;
6568 vtop
->type
.t
= VT_INT
;
6580 /* leave source on stack */
6581 } else if (ft
& VT_BITFIELD
) {
6582 /* bitfield store handling */
6583 bit_pos
= (ft
>> VT_STRUCT_SHIFT
) & 0x3f;
6584 bit_size
= (ft
>> (VT_STRUCT_SHIFT
+ 6)) & 0x3f;
6585 /* remove bit field info to avoid loops */
6586 vtop
[-1].type
.t
= ft
& ~(VT_BITFIELD
| (-1 << VT_STRUCT_SHIFT
));
6588 /* duplicate source into other register */
6593 if((ft
& VT_BTYPE
) == VT_BOOL
) {
6594 gen_cast(&vtop
[-1].type
);
6595 vtop
[-1].type
.t
= (vtop
[-1].type
.t
& ~VT_BTYPE
) | (VT_BYTE
| VT_UNSIGNED
);
6598 /* duplicate destination */
6600 vtop
[-1] = vtop
[-2];
6602 /* mask and shift source */
6603 if((ft
& VT_BTYPE
) != VT_BOOL
) {
6604 vpushi((1 << bit_size
) - 1);
6609 /* load destination, mask and or with source */
6611 vpushi(~(((1 << bit_size
) - 1) << bit_pos
));
6617 /* pop off shifted source from "duplicate source..." above */
6621 #ifdef CONFIG_TCC_BCHECK
6622 /* bound check case */
6623 if (vtop
[-1].r
& VT_MUSTBOUND
) {
6629 if (!nocode_wanted
) {
6633 #ifdef TCC_TARGET_X86_64
6634 if ((ft
& VT_BTYPE
) == VT_LDOUBLE
) {
6639 r
= gv(rc
); /* generate value */
6640 /* if lvalue was saved on stack, must read it */
6641 if ((vtop
[-1].r
& VT_VALMASK
) == VT_LLOCAL
) {
6643 t
= get_reg(RC_INT
);
6644 #ifdef TCC_TARGET_X86_64
6649 sv
.r
= VT_LOCAL
| VT_LVAL
;
6650 sv
.c
.ul
= vtop
[-1].c
.ul
;
6652 vtop
[-1].r
= t
| VT_LVAL
;
6655 #ifndef TCC_TARGET_X86_64
6656 /* two word case handling : store second register at word + 4 */
6657 if ((ft
& VT_BTYPE
) == VT_LLONG
) {
6659 /* convert to int to increment easily */
6660 vtop
->type
.t
= VT_INT
;
6666 /* XXX: it works because r2 is spilled last ! */
6667 store(vtop
->r2
, vtop
- 1);
6672 vtop
--; /* NOT vpop() because on x86 it would flush the fp stack */
6673 vtop
->r
|= delayed_cast
;
6677 /* post defines POST/PRE add. c is the token ++ or -- */
6678 void inc(int post
, int c
)
6681 vdup(); /* save lvalue */
6683 gv_dup(); /* duplicate value */
6688 vpushi(c
- TOK_MID
);
6690 vstore(); /* store value */
6692 vpop(); /* if post op, return saved value */
6695 /* Parse GNUC __attribute__ extension. Currently, the following
6696 extensions are recognized:
6697 - aligned(n) : set data/function alignment.
6698 - packed : force data alignment to 1
6699 - section(x) : generate data/code in this section.
6700 - unused : currently ignored, but may be used someday.
6701 - regparm(n) : pass function parameters in registers (i386 only)
6703 static void parse_attribute(AttributeDef
*ad
)
6707 while (tok
== TOK_ATTRIBUTE1
|| tok
== TOK_ATTRIBUTE2
) {
6711 while (tok
!= ')') {
6712 if (tok
< TOK_IDENT
)
6713 expect("attribute name");
6721 expect("section name");
6722 ad
->section
= find_section(tcc_state
, (char *)tokc
.cstr
->data
);
6731 if (n
<= 0 || (n
& (n
- 1)) != 0)
6732 error("alignment must be a positive power of two");
6745 /* currently, no need to handle it because tcc does not
6746 track unused objects */
6750 /* currently, no need to handle it because tcc does not
6751 track unused objects */
6756 FUNC_CALL(ad
->func_attr
) = FUNC_CDECL
;
6761 FUNC_CALL(ad
->func_attr
) = FUNC_STDCALL
;
6763 #ifdef TCC_TARGET_I386
6773 FUNC_CALL(ad
->func_attr
) = FUNC_FASTCALL1
+ n
- 1;
6779 FUNC_CALL(ad
->func_attr
) = FUNC_FASTCALLW
;
6783 FUNC_EXPORT(ad
->func_attr
) = 1;
6786 if (tcc_state
->warn_unsupported
)
6787 warning("'%s' attribute ignored", get_tok_str(t
, NULL
));
6788 /* skip parameters */
6790 int parenthesis
= 0;
6794 else if (tok
== ')')
6797 } while (parenthesis
&& tok
!= -1);
6810 /* enum/struct/union declaration. u is either VT_ENUM or VT_STRUCT */
6811 static void struct_decl(CType
*type
, int u
)
6813 int a
, v
, size
, align
, maxalign
, c
, offset
;
6814 int bit_size
, bit_pos
, bsize
, bt
, lbit_pos
, prevbt
;
6815 Sym
*s
, *ss
, *ass
, **ps
;
6819 a
= tok
; /* save decl type */
6824 /* struct already defined ? return it */
6826 expect("struct/union/enum name");
6830 error("invalid type");
6837 /* we put an undefined size for struct/union */
6838 s
= sym_push(v
| SYM_STRUCT
, &type1
, 0, -1);
6839 s
->r
= 0; /* default alignment is zero as gcc */
6840 /* put struct/union/enum name in type */
6848 error("struct/union/enum already defined");
6849 /* cannot be empty */
6851 /* non empty enums are not allowed */
6852 if (a
== TOK_ENUM
) {
6856 expect("identifier");
6862 /* enum symbols have static storage */
6863 ss
= sym_push(v
, &int_type
, VT_CONST
, c
);
6864 ss
->type
.t
|= VT_STATIC
;
6869 /* NOTE: we accept a trailing comma */
6880 while (tok
!= '}') {
6881 parse_btype(&btype
, &ad
);
6887 type_decl(&type1
, &ad
, &v
, TYPE_DIRECT
| TYPE_ABSTRACT
);
6888 if (v
== 0 && (type1
.t
& VT_BTYPE
) != VT_STRUCT
)
6889 expect("identifier");
6890 if ((type1
.t
& VT_BTYPE
) == VT_FUNC
||
6891 (type1
.t
& (VT_TYPEDEF
| VT_STATIC
| VT_EXTERN
| VT_INLINE
)))
6892 error("invalid type for '%s'",
6893 get_tok_str(v
, NULL
));
6897 bit_size
= expr_const();
6898 /* XXX: handle v = 0 case for messages */
6900 error("negative width in bit-field '%s'",
6901 get_tok_str(v
, NULL
));
6902 if (v
&& bit_size
== 0)
6903 error("zero width for bit-field '%s'",
6904 get_tok_str(v
, NULL
));
6906 size
= type_size(&type1
, &align
);
6908 if (align
< ad
.aligned
)
6910 } else if (ad
.packed
) {
6912 } else if (*tcc_state
->pack_stack_ptr
) {
6913 if (align
> *tcc_state
->pack_stack_ptr
)
6914 align
= *tcc_state
->pack_stack_ptr
;
6917 if (bit_size
>= 0) {
6918 bt
= type1
.t
& VT_BTYPE
;
6924 error("bitfields must have scalar type");
6926 if (bit_size
> bsize
) {
6927 error("width of '%s' exceeds its type",
6928 get_tok_str(v
, NULL
));
6929 } else if (bit_size
== bsize
) {
6930 /* no need for bit fields */
6932 } else if (bit_size
== 0) {
6933 /* XXX: what to do if only padding in a
6935 /* zero size: means to pad */
6938 /* we do not have enough room ?
6939 did the type change?
6941 if ((bit_pos
+ bit_size
) > bsize
||
6942 bt
!= prevbt
|| a
== TOK_UNION
)
6945 /* XXX: handle LSB first */
6946 type1
.t
|= VT_BITFIELD
|
6947 (bit_pos
<< VT_STRUCT_SHIFT
) |
6948 (bit_size
<< (VT_STRUCT_SHIFT
+ 6));
6949 bit_pos
+= bit_size
;
6955 if (v
!= 0 || (type1
.t
& VT_BTYPE
) == VT_STRUCT
) {
6956 /* add new memory data only if starting
6958 if (lbit_pos
== 0) {
6959 if (a
== TOK_STRUCT
) {
6960 c
= (c
+ align
- 1) & -align
;
6969 if (align
> maxalign
)
6973 printf("add field %s offset=%d",
6974 get_tok_str(v
, NULL
), offset
);
6975 if (type1
.t
& VT_BITFIELD
) {
6976 printf(" pos=%d size=%d",
6977 (type1
.t
>> VT_STRUCT_SHIFT
) & 0x3f,
6978 (type1
.t
>> (VT_STRUCT_SHIFT
+ 6)) & 0x3f);
6983 if (v
== 0 && (type1
.t
& VT_BTYPE
) == VT_STRUCT
) {
6985 while ((ass
= ass
->next
) != NULL
) {
6986 ss
= sym_push(ass
->v
, &ass
->type
, 0, offset
+ ass
->c
);
6991 ss
= sym_push(v
| SYM_FIELD
, &type1
, 0, offset
);
6995 if (tok
== ';' || tok
== TOK_EOF
)
7002 /* store size and alignment */
7003 s
->c
= (c
+ maxalign
- 1) & -maxalign
;
7009 /* return 0 if no type declaration. otherwise, return the basic type
7012 static int parse_btype(CType
*type
, AttributeDef
*ad
)
7014 int t
, u
, type_found
, typespec_found
, typedef_found
;
7018 memset(ad
, 0, sizeof(AttributeDef
));
7026 /* currently, we really ignore extension */
7036 if ((t
& VT_BTYPE
) != 0)
7037 error("too many basic types");
7053 if ((t
& VT_BTYPE
) == VT_DOUBLE
) {
7054 t
= (t
& ~VT_BTYPE
) | VT_LDOUBLE
;
7055 } else if ((t
& VT_BTYPE
) == VT_LONG
) {
7056 t
= (t
& ~VT_BTYPE
) | VT_LLONG
;
7070 if ((t
& VT_BTYPE
) == VT_LONG
) {
7071 t
= (t
& ~VT_BTYPE
) | VT_LDOUBLE
;
7078 struct_decl(&type1
, VT_ENUM
);
7081 type
->ref
= type1
.ref
;
7085 struct_decl(&type1
, VT_STRUCT
);
7088 /* type modifiers */
7141 /* GNUC attribute */
7142 case TOK_ATTRIBUTE1
:
7143 case TOK_ATTRIBUTE2
:
7144 parse_attribute(ad
);
7151 parse_expr_type(&type1
);
7154 if (typespec_found
|| typedef_found
)
7157 if (!s
|| !(s
->type
.t
& VT_TYPEDEF
))
7160 t
|= (s
->type
.t
& ~VT_TYPEDEF
);
7161 type
->ref
= s
->type
.ref
;
7169 if ((t
& (VT_SIGNED
|VT_UNSIGNED
)) == (VT_SIGNED
|VT_UNSIGNED
))
7170 error("signed and unsigned modifier");
7171 if (tcc_state
->char_is_unsigned
) {
7172 if ((t
& (VT_SIGNED
|VT_UNSIGNED
|VT_BTYPE
)) == VT_BYTE
)
7177 /* long is never used as type */
7178 if ((t
& VT_BTYPE
) == VT_LONG
)
7179 #ifndef TCC_TARGET_X86_64
7180 t
= (t
& ~VT_BTYPE
) | VT_INT
;
7182 t
= (t
& ~VT_BTYPE
) | VT_LLONG
;
7188 /* convert a function parameter type (array to pointer and function to
7189 function pointer) */
7190 static inline void convert_parameter_type(CType
*pt
)
7192 /* remove const and volatile qualifiers (XXX: const could be used
7193 to indicate a const function parameter */
7194 pt
->t
&= ~(VT_CONSTANT
| VT_VOLATILE
);
7195 /* array must be transformed to pointer according to ANSI C */
7197 if ((pt
->t
& VT_BTYPE
) == VT_FUNC
) {
7202 static void post_type(CType
*type
, AttributeDef
*ad
)
7204 int n
, l
, t1
, arg_size
, align
;
7205 Sym
**plast
, *s
, *first
;
7210 /* function declaration */
7218 /* read param name and compute offset */
7219 if (l
!= FUNC_OLD
) {
7220 if (!parse_btype(&pt
, &ad1
)) {
7222 error("invalid type");
7229 if ((pt
.t
& VT_BTYPE
) == VT_VOID
&& tok
== ')')
7231 type_decl(&pt
, &ad1
, &n
, TYPE_DIRECT
| TYPE_ABSTRACT
);
7232 if ((pt
.t
& VT_BTYPE
) == VT_VOID
)
7233 error("parameter declared as void");
7234 arg_size
+= (type_size(&pt
, &align
) + 3) & ~3;
7239 expect("identifier");
7243 convert_parameter_type(&pt
);
7244 s
= sym_push(n
| SYM_FIELD
, &pt
, 0, 0);
7250 if (l
== FUNC_NEW
&& tok
== TOK_DOTS
) {
7257 /* if no parameters, then old type prototype */
7261 t1
= type
->t
& VT_STORAGE
;
7262 /* NOTE: const is ignored in returned type as it has a special
7263 meaning in gcc / C++ */
7264 type
->t
&= ~(VT_STORAGE
| VT_CONSTANT
);
7265 post_type(type
, ad
);
7266 /* we push a anonymous symbol which will contain the function prototype */
7267 FUNC_ARGS(ad
->func_attr
) = arg_size
;
7268 s
= sym_push(SYM_FIELD
, type
, ad
->func_attr
, l
);
7270 type
->t
= t1
| VT_FUNC
;
7272 } else if (tok
== '[') {
7273 /* array definition */
7279 error("invalid array size");
7282 /* parse next post type */
7283 t1
= type
->t
& VT_STORAGE
;
7284 type
->t
&= ~VT_STORAGE
;
7285 post_type(type
, ad
);
7287 /* we push a anonymous symbol which will contain the array
7289 s
= sym_push(SYM_FIELD
, type
, 0, n
);
7290 type
->t
= t1
| VT_ARRAY
| VT_PTR
;
7295 /* Parse a type declaration (except basic type), and return the type
7296 in 'type'. 'td' is a bitmask indicating which kind of type decl is
7297 expected. 'type' should contain the basic type. 'ad' is the
7298 attribute definition of the basic type. It can be modified by
7301 static void type_decl(CType
*type
, AttributeDef
*ad
, int *v
, int td
)
7304 CType type1
, *type2
;
7307 while (tok
== '*') {
7315 qualifiers
|= VT_CONSTANT
;
7320 qualifiers
|= VT_VOLATILE
;
7328 type
->t
|= qualifiers
;
7331 /* XXX: clarify attribute handling */
7332 if (tok
== TOK_ATTRIBUTE1
|| tok
== TOK_ATTRIBUTE2
)
7333 parse_attribute(ad
);
7335 /* recursive type */
7336 /* XXX: incorrect if abstract type for functions (e.g. 'int ()') */
7337 type1
.t
= 0; /* XXX: same as int */
7340 /* XXX: this is not correct to modify 'ad' at this point, but
7341 the syntax is not clear */
7342 if (tok
== TOK_ATTRIBUTE1
|| tok
== TOK_ATTRIBUTE2
)
7343 parse_attribute(ad
);
7344 type_decl(&type1
, ad
, v
, td
);
7347 /* type identifier */
7348 if (tok
>= TOK_IDENT
&& (td
& TYPE_DIRECT
)) {
7352 if (!(td
& TYPE_ABSTRACT
))
7353 expect("identifier");
7357 post_type(type
, ad
);
7358 if (tok
== TOK_ATTRIBUTE1
|| tok
== TOK_ATTRIBUTE2
)
7359 parse_attribute(ad
);
7362 /* append type at the end of type1 */
7375 /* compute the lvalue VT_LVAL_xxx needed to match type t. */
7376 static int lvalue_type(int t
)
7381 if (bt
== VT_BYTE
|| bt
== VT_BOOL
)
7383 else if (bt
== VT_SHORT
)
7387 if (t
& VT_UNSIGNED
)
7388 r
|= VT_LVAL_UNSIGNED
;
7392 /* indirection with full error checking and bound check */
7393 static void indir(void)
7395 if ((vtop
->type
.t
& VT_BTYPE
) != VT_PTR
) {
7396 if ((vtop
->type
.t
& VT_BTYPE
) == VT_FUNC
)
7400 if ((vtop
->r
& VT_LVAL
) && !nocode_wanted
)
7402 vtop
->type
= *pointed_type(&vtop
->type
);
7403 /* Arrays and functions are never lvalues */
7404 if (!(vtop
->type
.t
& VT_ARRAY
)
7405 && (vtop
->type
.t
& VT_BTYPE
) != VT_FUNC
) {
7406 vtop
->r
|= lvalue_type(vtop
->type
.t
);
7407 /* if bound checking, the referenced pointer must be checked */
7408 if (do_bounds_check
)
7409 vtop
->r
|= VT_MUSTBOUND
;
7413 /* pass a parameter to a function and do type checking and casting */
7414 static void gfunc_param_typed(Sym
*func
, Sym
*arg
)
7419 func_type
= func
->c
;
7420 if (func_type
== FUNC_OLD
||
7421 (func_type
== FUNC_ELLIPSIS
&& arg
== NULL
)) {
7422 /* default casting : only need to convert float to double */
7423 if ((vtop
->type
.t
& VT_BTYPE
) == VT_FLOAT
) {
7427 } else if (arg
== NULL
) {
7428 error("too many arguments to function");
7431 type
.t
&= ~VT_CONSTANT
; /* need to do that to avoid false warning */
7432 gen_assign_cast(&type
);
7436 /* parse an expression of the form '(type)' or '(expr)' and return its
7438 static void parse_expr_type(CType
*type
)
7444 if (parse_btype(type
, &ad
)) {
7445 type_decl(type
, &ad
, &n
, TYPE_ABSTRACT
);
7452 static void parse_type(CType
*type
)
7457 if (!parse_btype(type
, &ad
)) {
7460 type_decl(type
, &ad
, &n
, TYPE_ABSTRACT
);
7463 static void vpush_tokc(int t
)
7467 vsetc(&type
, VT_CONST
, &tokc
);
7470 static void unary(void)
7472 int n
, t
, align
, size
, r
;
7477 /* XXX: GCC 2.95.3 does not generate a table although it should be
7491 vpush_tokc(VT_INT
| VT_UNSIGNED
);
7495 vpush_tokc(VT_LLONG
);
7499 vpush_tokc(VT_LLONG
| VT_UNSIGNED
);
7503 vpush_tokc(VT_FLOAT
);
7507 vpush_tokc(VT_DOUBLE
);
7511 vpush_tokc(VT_LDOUBLE
);
7514 case TOK___FUNCTION__
:
7516 goto tok_identifier
;
7522 /* special function name identifier */
7523 len
= strlen(funcname
) + 1;
7524 /* generate char[len] type */
7529 vpush_ref(&type
, data_section
, data_section
->data_offset
, len
);
7530 ptr
= section_ptr_add(data_section
, len
);
7531 memcpy(ptr
, funcname
, len
);
7536 #ifdef TCC_TARGET_PE
7537 t
= VT_SHORT
| VT_UNSIGNED
;
7543 /* string parsing */
7546 if (tcc_state
->warn_write_strings
)
7551 memset(&ad
, 0, sizeof(AttributeDef
));
7552 decl_initializer_alloc(&type
, &ad
, VT_CONST
, 2, 0, 0);
7557 if (parse_btype(&type
, &ad
)) {
7558 type_decl(&type
, &ad
, &n
, TYPE_ABSTRACT
);
7560 /* check ISOC99 compound literal */
7562 /* data is allocated locally by default */
7567 /* all except arrays are lvalues */
7568 if (!(type
.t
& VT_ARRAY
))
7569 r
|= lvalue_type(type
.t
);
7570 memset(&ad
, 0, sizeof(AttributeDef
));
7571 decl_initializer_alloc(&type
, &ad
, r
, 1, 0, 0);
7576 } else if (tok
== '{') {
7577 /* save all registers */
7579 /* statement expression : we do not accept break/continue
7580 inside as GCC does */
7581 block(NULL
, NULL
, NULL
, NULL
, 0, 1);
7596 /* functions names must be treated as function pointers,
7597 except for unary '&' and sizeof. Since we consider that
7598 functions are not lvalues, we only have to handle it
7599 there and in function calls. */
7600 /* arrays can also be used although they are not lvalues */
7601 if ((vtop
->type
.t
& VT_BTYPE
) != VT_FUNC
&&
7602 !(vtop
->type
.t
& VT_ARRAY
) && !(vtop
->type
.t
& VT_LLOCAL
))
7604 mk_pointer(&vtop
->type
);
7610 if ((vtop
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
) {
7612 boolean
.t
= VT_BOOL
;
7614 vtop
->c
.i
= !vtop
->c
.i
;
7615 } else if ((vtop
->r
& VT_VALMASK
) == VT_CMP
)
7616 vtop
->c
.i
= vtop
->c
.i
^ 1;
7619 vseti(VT_JMP
, gtst(1, 0));
7630 /* in order to force cast, we add zero */
7632 if ((vtop
->type
.t
& VT_BTYPE
) == VT_PTR
)
7633 error("pointer not accepted for unary plus");
7643 parse_expr_type(&type
);
7647 size
= type_size(&type
, &align
);
7648 if (t
== TOK_SIZEOF
) {
7650 error("sizeof applied to an incomplete type");
7655 vtop
->type
.t
|= VT_UNSIGNED
;
7658 case TOK_builtin_types_compatible_p
:
7667 type1
.t
&= ~(VT_CONSTANT
| VT_VOLATILE
);
7668 type2
.t
&= ~(VT_CONSTANT
| VT_VOLATILE
);
7669 vpushi(is_compatible_types(&type1
, &type2
));
7672 case TOK_builtin_constant_p
:
7674 int saved_nocode_wanted
, res
;
7677 saved_nocode_wanted
= nocode_wanted
;
7680 res
= (vtop
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
;
7682 nocode_wanted
= saved_nocode_wanted
;
7687 case TOK_builtin_frame_address
:
7692 if (tok
!= TOK_CINT
) {
7693 error("__builtin_frame_address only takes integers");
7696 error("TCC only supports __builtin_frame_address(0)");
7702 vset(&type
, VT_LOCAL
, 0);
7720 goto tok_identifier
;
7722 /* allow to take the address of a label */
7723 if (tok
< TOK_UIDENT
)
7724 expect("label identifier");
7725 s
= label_find(tok
);
7727 s
= label_push(&global_label_stack
, tok
, LABEL_FORWARD
);
7729 if (s
->r
== LABEL_DECLARED
)
7730 s
->r
= LABEL_FORWARD
;
7733 s
->type
.t
= VT_VOID
;
7734 mk_pointer(&s
->type
);
7735 s
->type
.t
|= VT_STATIC
;
7737 vset(&s
->type
, VT_CONST
| VT_SYM
, 0);
7746 expect("identifier");
7750 error("'%s' undeclared", get_tok_str(t
, NULL
));
7751 /* for simple function calls, we tolerate undeclared
7752 external reference to int() function */
7753 if (tcc_state
->warn_implicit_function_declaration
)
7754 warning("implicit declaration of function '%s'",
7755 get_tok_str(t
, NULL
));
7756 s
= external_global_sym(t
, &func_old_type
, 0);
7758 if ((s
->type
.t
& (VT_STATIC
| VT_INLINE
| VT_BTYPE
)) ==
7759 (VT_STATIC
| VT_INLINE
| VT_FUNC
)) {
7760 /* if referencing an inline function, then we generate a
7761 symbol to it if not already done. It will have the
7762 effect to generate code for it at the end of the
7763 compilation unit. Inline function as always
7764 generated in the text section. */
7766 put_extern_sym(s
, text_section
, 0, 0);
7767 r
= VT_SYM
| VT_CONST
;
7771 vset(&s
->type
, r
, s
->c
);
7772 /* if forward reference, we must point to s */
7773 if (vtop
->r
& VT_SYM
) {
7780 /* post operations */
7782 if (tok
== TOK_INC
|| tok
== TOK_DEC
) {
7785 } else if (tok
== '.' || tok
== TOK_ARROW
) {
7787 if (tok
== TOK_ARROW
)
7792 /* expect pointer on structure */
7793 if ((vtop
->type
.t
& VT_BTYPE
) != VT_STRUCT
)
7794 expect("struct or union");
7798 while ((s
= s
->next
) != NULL
) {
7803 error("field not found: %s", get_tok_str(tok
& ~SYM_FIELD
, NULL
));
7804 /* add field offset to pointer */
7805 vtop
->type
= char_pointer_type
; /* change type to 'char *' */
7808 /* change type to field type, and set to lvalue */
7809 vtop
->type
= s
->type
;
7810 /* an array is never an lvalue */
7811 if (!(vtop
->type
.t
& VT_ARRAY
)) {
7812 vtop
->r
|= lvalue_type(vtop
->type
.t
);
7813 /* if bound checking, the referenced pointer must be checked */
7814 if (do_bounds_check
)
7815 vtop
->r
|= VT_MUSTBOUND
;
7818 } else if (tok
== '[') {
7824 } else if (tok
== '(') {
7830 if ((vtop
->type
.t
& VT_BTYPE
) != VT_FUNC
) {
7831 /* pointer test (no array accepted) */
7832 if ((vtop
->type
.t
& (VT_BTYPE
| VT_ARRAY
)) == VT_PTR
) {
7833 vtop
->type
= *pointed_type(&vtop
->type
);
7834 if ((vtop
->type
.t
& VT_BTYPE
) != VT_FUNC
)
7838 expect("function pointer");
7841 vtop
->r
&= ~VT_LVAL
; /* no lvalue */
7843 /* get return type */
7846 sa
= s
->next
; /* first parameter */
7849 /* compute first implicit argument if a structure is returned */
7850 if ((s
->type
.t
& VT_BTYPE
) == VT_STRUCT
) {
7851 /* get some space for the returned structure */
7852 size
= type_size(&s
->type
, &align
);
7853 loc
= (loc
- size
) & -align
;
7855 ret
.r
= VT_LOCAL
| VT_LVAL
;
7856 /* pass it as 'int' to avoid structure arg passing
7858 vseti(VT_LOCAL
, loc
);
7863 /* return in register */
7864 if (is_float(ret
.type
.t
)) {
7867 if ((ret
.type
.t
& VT_BTYPE
) == VT_LLONG
)
7876 gfunc_param_typed(s
, sa
);
7886 error("too few arguments to function");
7888 if (!nocode_wanted
) {
7889 gfunc_call(nb_args
);
7891 vtop
-= (nb_args
+ 1);
7894 vsetc(&ret
.type
, ret
.r
, &ret
.c
);
7902 static void uneq(void)
7908 (tok
>= TOK_A_MOD
&& tok
<= TOK_A_DIV
) ||
7909 tok
== TOK_A_XOR
|| tok
== TOK_A_OR
||
7910 tok
== TOK_A_SHL
|| tok
== TOK_A_SAR
) {
7925 static void expr_prod(void)
7930 while (tok
== '*' || tok
== '/' || tok
== '%') {
7938 static void expr_sum(void)
7943 while (tok
== '+' || tok
== '-') {
7951 static void expr_shift(void)
7956 while (tok
== TOK_SHL
|| tok
== TOK_SAR
) {
7964 static void expr_cmp(void)
7969 while ((tok
>= TOK_ULE
&& tok
<= TOK_GT
) ||
7970 tok
== TOK_ULT
|| tok
== TOK_UGE
) {
7978 static void expr_cmpeq(void)
7983 while (tok
== TOK_EQ
|| tok
== TOK_NE
) {
7991 static void expr_and(void)
7994 while (tok
== '&') {
8001 static void expr_xor(void)
8004 while (tok
== '^') {
8011 static void expr_or(void)
8014 while (tok
== '|') {
8021 /* XXX: fix this mess */
8022 static void expr_land_const(void)
8025 while (tok
== TOK_LAND
) {
8032 /* XXX: fix this mess */
8033 static void expr_lor_const(void)
8036 while (tok
== TOK_LOR
) {
8043 /* only used if non constant */
8044 static void expr_land(void)
8049 if (tok
== TOK_LAND
) {
8054 if (tok
!= TOK_LAND
) {
8064 static void expr_lor(void)
8069 if (tok
== TOK_LOR
) {
8074 if (tok
!= TOK_LOR
) {
8084 /* XXX: better constant handling */
8085 static void expr_eq(void)
8087 int tt
, u
, r1
, r2
, rc
, t1
, t2
, bt1
, bt2
;
8089 CType type
, type1
, type2
;
8096 boolean
.t
= VT_BOOL
;
8102 if (tok
!= ':' || !gnu_ext
) {
8117 if (vtop
!= vstack
) {
8118 /* needed to avoid having different registers saved in
8120 if (is_float(vtop
->type
.t
)) {
8122 #ifdef TCC_TARGET_X86_64
8123 if ((vtop
->type
.t
& VT_BTYPE
) == VT_LDOUBLE
) {
8133 if (tok
== ':' && gnu_ext
) {
8141 sv
= *vtop
; /* save value to handle it later */
8142 vtop
--; /* no vpop so that FP stack is not flushed */
8150 bt1
= t1
& VT_BTYPE
;
8152 bt2
= t2
& VT_BTYPE
;
8153 /* cast operands to correct type according to ISOC rules */
8154 if (is_float(bt1
) || is_float(bt2
)) {
8155 if (bt1
== VT_LDOUBLE
|| bt2
== VT_LDOUBLE
) {
8156 type
.t
= VT_LDOUBLE
;
8157 } else if (bt1
== VT_DOUBLE
|| bt2
== VT_DOUBLE
) {
8162 } else if (bt1
== VT_LLONG
|| bt2
== VT_LLONG
) {
8163 /* cast to biggest op */
8165 /* convert to unsigned if it does not fit in a long long */
8166 if ((t1
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_LLONG
| VT_UNSIGNED
) ||
8167 (t2
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_LLONG
| VT_UNSIGNED
))
8168 type
.t
|= VT_UNSIGNED
;
8169 } else if (bt1
== VT_PTR
|| bt2
== VT_PTR
) {
8170 /* XXX: test pointer compatibility */
8172 } else if (bt1
== VT_FUNC
|| bt2
== VT_FUNC
) {
8173 /* XXX: test function pointer compatibility */
8175 } else if (bt1
== VT_STRUCT
|| bt2
== VT_STRUCT
) {
8176 /* XXX: test structure compatibility */
8178 } else if (bt1
== VT_VOID
|| bt2
== VT_VOID
) {
8179 /* NOTE: as an extension, we accept void on only one side */
8182 /* integer operations */
8184 /* convert to unsigned if it does not fit in an integer */
8185 if ((t1
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_INT
| VT_UNSIGNED
) ||
8186 (t2
& (VT_BTYPE
| VT_UNSIGNED
)) == (VT_INT
| VT_UNSIGNED
))
8187 type
.t
|= VT_UNSIGNED
;
8190 /* now we convert second operand */
8192 if (VT_STRUCT
== (vtop
->type
.t
& VT_BTYPE
))
8195 if (is_float(type
.t
)) {
8197 #ifdef TCC_TARGET_X86_64
8198 if ((type
.t
& VT_BTYPE
) == VT_LDOUBLE
) {
8202 } else if ((type
.t
& VT_BTYPE
) == VT_LLONG
) {
8203 /* for long longs, we use fixed registers to avoid having
8204 to handle a complicated move */
8209 /* this is horrible, but we must also convert first
8213 /* put again first value and cast it */
8216 if (VT_STRUCT
== (vtop
->type
.t
& VT_BTYPE
))
8226 static void gexpr(void)
8237 /* parse an expression and return its type without any side effect. */
8238 static void expr_type(CType
*type
)
8240 int saved_nocode_wanted
;
8242 saved_nocode_wanted
= nocode_wanted
;
8247 nocode_wanted
= saved_nocode_wanted
;
8250 /* parse a unary expression and return its type without any side
8252 static void unary_type(CType
*type
)
8264 /* parse a constant expression and return value in vtop. */
8265 static void expr_const1(void)
8274 /* parse an integer constant and return its value. */
8275 static int expr_const(void)
8279 if ((vtop
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) != VT_CONST
)
8280 expect("constant expression");
8286 /* return the label token if current token is a label, otherwise
8288 static int is_label(void)
8292 /* fast test first */
8293 if (tok
< TOK_UIDENT
)
8295 /* no need to save tokc because tok is an identifier */
8302 unget_tok(last_tok
);
8307 static void block(int *bsym
, int *csym
, int *case_sym
, int *def_sym
,
8308 int case_reg
, int is_expr
)
8313 /* generate line number info */
8315 (last_line_num
!= file
->line_num
|| last_ind
!= ind
)) {
8316 put_stabn(N_SLINE
, 0, file
->line_num
, ind
- func_ind
);
8318 last_line_num
= file
->line_num
;
8322 /* default return value is (void) */
8324 vtop
->type
.t
= VT_VOID
;
8327 if (tok
== TOK_IF
) {
8334 block(bsym
, csym
, case_sym
, def_sym
, case_reg
, 0);
8336 if (c
== TOK_ELSE
) {
8340 block(bsym
, csym
, case_sym
, def_sym
, case_reg
, 0);
8341 gsym(d
); /* patch else jmp */
8344 } else if (tok
== TOK_WHILE
) {
8352 block(&a
, &b
, case_sym
, def_sym
, case_reg
, 0);
8356 } else if (tok
== '{') {
8360 /* record local declaration stack position */
8362 llabel
= local_label_stack
;
8363 /* handle local labels declarations */
8364 if (tok
== TOK_LABEL
) {
8367 if (tok
< TOK_UIDENT
)
8368 expect("label identifier");
8369 label_push(&local_label_stack
, tok
, LABEL_DECLARED
);
8379 while (tok
!= '}') {
8384 block(bsym
, csym
, case_sym
, def_sym
, case_reg
, is_expr
);
8387 /* pop locally defined labels */
8388 label_pop(&local_label_stack
, llabel
);
8389 /* pop locally defined symbols */
8391 /* XXX: this solution makes only valgrind happy...
8392 triggered by gcc.c-torture/execute/20000917-1.c */
8394 switch(vtop
->type
.t
& VT_BTYPE
) {
8399 for(p
=vtop
->type
.ref
;p
;p
=p
->prev
)
8401 error("unsupported expression type");
8404 sym_pop(&local_stack
, s
);
8406 } else if (tok
== TOK_RETURN
) {
8410 gen_assign_cast(&func_vt
);
8411 if ((func_vt
.t
& VT_BTYPE
) == VT_STRUCT
) {
8413 /* if returning structure, must copy it to implicit
8414 first pointer arg location */
8417 size
= type_size(&func_vt
,&align
);
8420 if((vtop
->r
!= (VT_LOCAL
| VT_LVAL
) || (vtop
->c
.i
& 3))
8424 loc
= (loc
- size
) & -4;
8427 vset(&type
, VT_LOCAL
| VT_LVAL
, addr
);
8430 vset(&int_type
, VT_LOCAL
| VT_LVAL
, addr
);
8432 vtop
->type
= int_type
;
8438 vset(&type
, VT_LOCAL
| VT_LVAL
, func_vc
);
8441 /* copy structure value to pointer */
8446 } else if (is_float(func_vt
.t
)) {
8451 vtop
--; /* NOT vpop() because on x86 it would flush the fp stack */
8454 rsym
= gjmp(rsym
); /* jmp */
8455 } else if (tok
== TOK_BREAK
) {
8458 error("cannot break");
8459 *bsym
= gjmp(*bsym
);
8462 } else if (tok
== TOK_CONTINUE
) {
8465 error("cannot continue");
8466 *csym
= gjmp(*csym
);
8469 } else if (tok
== TOK_FOR
) {
8496 block(&a
, &b
, case_sym
, def_sym
, case_reg
, 0);
8501 if (tok
== TOK_DO
) {
8506 block(&a
, &b
, case_sym
, def_sym
, case_reg
, 0);
8517 if (tok
== TOK_SWITCH
) {
8521 /* XXX: other types than integer */
8522 case_reg
= gv(RC_INT
);
8526 b
= gjmp(0); /* jump to first case */
8528 block(&a
, csym
, &b
, &c
, case_reg
, 0);
8529 /* if no default, jmp after switch */
8537 if (tok
== TOK_CASE
) {
8544 if (gnu_ext
&& tok
== TOK_DOTS
) {
8548 warning("empty case range");
8550 /* since a case is like a label, we must skip it with a jmp */
8557 *case_sym
= gtst(1, 0);
8560 *case_sym
= gtst(1, 0);
8564 *case_sym
= gtst(1, *case_sym
);
8569 goto block_after_label
;
8571 if (tok
== TOK_DEFAULT
) {
8577 error("too many 'default'");
8580 goto block_after_label
;
8582 if (tok
== TOK_GOTO
) {
8584 if (tok
== '*' && gnu_ext
) {
8588 if ((vtop
->type
.t
& VT_BTYPE
) != VT_PTR
)
8591 } else if (tok
>= TOK_UIDENT
) {
8592 s
= label_find(tok
);
8593 /* put forward definition if needed */
8595 s
= label_push(&global_label_stack
, tok
, LABEL_FORWARD
);
8597 if (s
->r
== LABEL_DECLARED
)
8598 s
->r
= LABEL_FORWARD
;
8600 /* label already defined */
8601 if (s
->r
& LABEL_FORWARD
)
8602 s
->next
= (void *)gjmp((long)s
->next
);
8604 gjmp_addr((long)s
->next
);
8607 expect("label identifier");
8610 } else if (tok
== TOK_ASM1
|| tok
== TOK_ASM2
|| tok
== TOK_ASM3
) {
8618 if (s
->r
== LABEL_DEFINED
)
8619 error("duplicate label '%s'", get_tok_str(s
->v
, NULL
));
8620 gsym((long)s
->next
);
8621 s
->r
= LABEL_DEFINED
;
8623 s
= label_push(&global_label_stack
, b
, LABEL_DEFINED
);
8625 s
->next
= (void *)ind
;
8626 /* we accept this, but it is a mistake */
8629 warning("deprecated use of label at end of compound statement");
8633 block(bsym
, csym
, case_sym
, def_sym
, case_reg
, is_expr
);
8636 /* expression case */
8651 /* t is the array or struct type. c is the array or struct
8652 address. cur_index/cur_field is the pointer to the current
8653 value. 'size_only' is true if only size info is needed (only used
8655 static void decl_designator(CType
*type
, Section
*sec
, unsigned long c
,
8656 int *cur_index
, Sym
**cur_field
,
8660 int notfirst
, index
, index_last
, align
, l
, nb_elems
, elem_size
;
8666 if (gnu_ext
&& (l
= is_label()) != 0)
8668 while (tok
== '[' || tok
== '.') {
8670 if (!(type
->t
& VT_ARRAY
))
8671 expect("array type");
8674 index
= expr_const();
8675 if (index
< 0 || (s
->c
>= 0 && index
>= s
->c
))
8676 expect("invalid index");
8677 if (tok
== TOK_DOTS
&& gnu_ext
) {
8679 index_last
= expr_const();
8680 if (index_last
< 0 ||
8681 (s
->c
>= 0 && index_last
>= s
->c
) ||
8683 expect("invalid index");
8689 *cur_index
= index_last
;
8690 type
= pointed_type(type
);
8691 elem_size
= type_size(type
, &align
);
8692 c
+= index
* elem_size
;
8693 /* NOTE: we only support ranges for last designator */
8694 nb_elems
= index_last
- index
+ 1;
8695 if (nb_elems
!= 1) {
8704 if ((type
->t
& VT_BTYPE
) != VT_STRUCT
)
8705 expect("struct/union type");
8718 /* XXX: fix this mess by using explicit storage field */
8720 type1
.t
|= (type
->t
& ~VT_TYPE
);
8734 if (type
->t
& VT_ARRAY
) {
8736 type
= pointed_type(type
);
8737 c
+= index
* type_size(type
, &align
);
8741 error("too many field init");
8742 /* XXX: fix this mess by using explicit storage field */
8744 type1
.t
|= (type
->t
& ~VT_TYPE
);
8749 decl_initializer(type
, sec
, c
, 0, size_only
);
8751 /* XXX: make it more general */
8752 if (!size_only
&& nb_elems
> 1) {
8753 unsigned long c_end
;
8758 error("range init not supported yet for dynamic storage");
8759 c_end
= c
+ nb_elems
* elem_size
;
8760 if (c_end
> sec
->data_allocated
)
8761 section_realloc(sec
, c_end
);
8762 src
= sec
->data
+ c
;
8764 for(i
= 1; i
< nb_elems
; i
++) {
8766 memcpy(dst
, src
, elem_size
);
8772 #define EXPR_CONST 1
8775 /* store a value or an expression directly in global data or in local array */
8776 static void init_putv(CType
*type
, Section
*sec
, unsigned long c
,
8777 int v
, int expr_type
)
8779 int saved_global_expr
, bt
, bit_pos
, bit_size
;
8781 unsigned long long bit_mask
;
8789 /* compound literals must be allocated globally in this case */
8790 saved_global_expr
= global_expr
;
8793 global_expr
= saved_global_expr
;
8794 /* NOTE: symbols are accepted */
8795 if ((vtop
->r
& (VT_VALMASK
| VT_LVAL
)) != VT_CONST
)
8796 error("initializer element is not constant");
8804 dtype
.t
&= ~VT_CONSTANT
; /* need to do that to avoid false warning */
8807 /* XXX: not portable */
8808 /* XXX: generate error if incorrect relocation */
8809 gen_assign_cast(&dtype
);
8810 bt
= type
->t
& VT_BTYPE
;
8811 ptr
= sec
->data
+ c
;
8812 /* XXX: make code faster ? */
8813 if (!(type
->t
& VT_BITFIELD
)) {
8818 bit_pos
= (vtop
->type
.t
>> VT_STRUCT_SHIFT
) & 0x3f;
8819 bit_size
= (vtop
->type
.t
>> (VT_STRUCT_SHIFT
+ 6)) & 0x3f;
8820 bit_mask
= (1LL << bit_size
) - 1;
8822 if ((vtop
->r
& VT_SYM
) &&
8828 (bt
== VT_INT
&& bit_size
!= 32)))
8829 error("initializer element is not computable at load time");
8832 vtop
->c
.i
= (vtop
->c
.i
!= 0);
8834 *(char *)ptr
|= (vtop
->c
.i
& bit_mask
) << bit_pos
;
8837 *(short *)ptr
|= (vtop
->c
.i
& bit_mask
) << bit_pos
;
8840 *(double *)ptr
= vtop
->c
.d
;
8843 *(long double *)ptr
= vtop
->c
.ld
;
8846 *(long long *)ptr
|= (vtop
->c
.ll
& bit_mask
) << bit_pos
;
8849 if (vtop
->r
& VT_SYM
) {
8850 greloc(sec
, vtop
->sym
, c
, R_DATA_32
);
8852 *(int *)ptr
|= (vtop
->c
.i
& bit_mask
) << bit_pos
;
8857 vset(&dtype
, VT_LOCAL
|VT_LVAL
, c
);
8864 /* put zeros for variable based init */
8865 static void init_putz(CType
*t
, Section
*sec
, unsigned long c
, int size
)
8868 /* nothing to do because globals are already set to zero */
8870 vpush_global_sym(&func_old_type
, TOK_memset
);
8878 /* 't' contains the type and storage info. 'c' is the offset of the
8879 object in section 'sec'. If 'sec' is NULL, it means stack based
8880 allocation. 'first' is true if array '{' must be read (multi
8881 dimension implicit array init handling). 'size_only' is true if
8882 size only evaluation is wanted (only for arrays). */
8883 static void decl_initializer(CType
*type
, Section
*sec
, unsigned long c
,
8884 int first
, int size_only
)
8886 int index
, array_length
, n
, no_oblock
, nb
, parlevel
, i
;
8887 int size1
, align1
, expr_type
;
8891 if (type
->t
& VT_ARRAY
) {
8895 t1
= pointed_type(type
);
8896 size1
= type_size(t1
, &align1
);
8899 if ((first
&& tok
!= TOK_LSTR
&& tok
!= TOK_STR
) ||
8905 /* only parse strings here if correct type (otherwise: handle
8906 them as ((w)char *) expressions */
8907 if ((tok
== TOK_LSTR
&&
8908 #ifdef TCC_TARGET_PE
8909 (t1
->t
& VT_BTYPE
) == VT_SHORT
&& (t1
->t
& VT_UNSIGNED
)
8911 (t1
->t
& VT_BTYPE
) == VT_INT
8913 ) || (tok
== TOK_STR
&& (t1
->t
& VT_BTYPE
) == VT_BYTE
)) {
8914 while (tok
== TOK_STR
|| tok
== TOK_LSTR
) {
8919 /* compute maximum number of chars wanted */
8921 cstr_len
= cstr
->size
;
8923 cstr_len
= cstr
->size
/ sizeof(nwchar_t
);
8926 if (n
>= 0 && nb
> (n
- array_length
))
8927 nb
= n
- array_length
;
8930 warning("initializer-string for array is too long");
8931 /* in order to go faster for common case (char
8932 string in global variable, we handle it
8934 if (sec
&& tok
== TOK_STR
&& size1
== 1) {
8935 memcpy(sec
->data
+ c
+ array_length
, cstr
->data
, nb
);
8939 ch
= ((unsigned char *)cstr
->data
)[i
];
8941 ch
= ((nwchar_t
*)cstr
->data
)[i
];
8942 init_putv(t1
, sec
, c
+ (array_length
+ i
) * size1
,
8950 /* only add trailing zero if enough storage (no
8951 warning in this case since it is standard) */
8952 if (n
< 0 || array_length
< n
) {
8954 init_putv(t1
, sec
, c
+ (array_length
* size1
), 0, EXPR_VAL
);
8960 while (tok
!= '}') {
8961 decl_designator(type
, sec
, c
, &index
, NULL
, size_only
);
8962 if (n
>= 0 && index
>= n
)
8963 error("index too large");
8964 /* must put zero in holes (note that doing it that way
8965 ensures that it even works with designators) */
8966 if (!size_only
&& array_length
< index
) {
8967 init_putz(t1
, sec
, c
+ array_length
* size1
,
8968 (index
- array_length
) * size1
);
8971 if (index
> array_length
)
8972 array_length
= index
;
8973 /* special test for multi dimensional arrays (may not
8974 be strictly correct if designators are used at the
8976 if (index
>= n
&& no_oblock
)
8985 /* put zeros at the end */
8986 if (!size_only
&& n
>= 0 && array_length
< n
) {
8987 init_putz(t1
, sec
, c
+ array_length
* size1
,
8988 (n
- array_length
) * size1
);
8990 /* patch type size if needed */
8992 s
->c
= array_length
;
8993 } else if ((type
->t
& VT_BTYPE
) == VT_STRUCT
&&
8994 (sec
|| !first
|| tok
== '{')) {
8997 /* NOTE: the previous test is a specific case for automatic
8998 struct/union init */
8999 /* XXX: union needs only one init */
9001 /* XXX: this test is incorrect for local initializers
9002 beginning with ( without {. It would be much more difficult
9003 to do it correctly (ideally, the expression parser should
9004 be used in all cases) */
9010 while (tok
== '(') {
9014 if (!parse_btype(&type1
, &ad1
))
9016 type_decl(&type1
, &ad1
, &n
, TYPE_ABSTRACT
);
9018 if (!is_assignable_types(type
, &type1
))
9019 error("invalid type for cast");
9024 if (first
|| tok
== '{') {
9033 while (tok
!= '}') {
9034 decl_designator(type
, sec
, c
, NULL
, &f
, size_only
);
9036 if (!size_only
&& array_length
< index
) {
9037 init_putz(type
, sec
, c
+ array_length
,
9038 index
- array_length
);
9040 index
= index
+ type_size(&f
->type
, &align1
);
9041 if (index
> array_length
)
9042 array_length
= index
;
9044 if (no_oblock
&& f
== NULL
)
9050 /* put zeros at the end */
9051 if (!size_only
&& array_length
< n
) {
9052 init_putz(type
, sec
, c
+ array_length
,
9061 } else if (tok
== '{') {
9063 decl_initializer(type
, sec
, c
, first
, size_only
);
9065 } else if (size_only
) {
9066 /* just skip expression */
9068 while ((parlevel
> 0 || (tok
!= '}' && tok
!= ',')) &&
9072 else if (tok
== ')')
9077 /* currently, we always use constant expression for globals
9078 (may change for scripting case) */
9079 expr_type
= EXPR_CONST
;
9081 expr_type
= EXPR_ANY
;
9082 init_putv(type
, sec
, c
, 0, expr_type
);
9086 /* parse an initializer for type 't' if 'has_init' is non zero, and
9087 allocate space in local or global data space ('r' is either
9088 VT_LOCAL or VT_CONST). If 'v' is non zero, then an associated
9089 variable 'v' of scope 'scope' is declared before initializers are
9090 parsed. If 'v' is zero, then a reference to the new object is put
9091 in the value stack. If 'has_init' is 2, a special parsing is done
9092 to handle string constants. */
9093 static void decl_initializer_alloc(CType
*type
, AttributeDef
*ad
, int r
,
9094 int has_init
, int v
, int scope
)
9096 int size
, align
, addr
, data_offset
;
9098 ParseState saved_parse_state
;
9099 TokenString init_str
;
9102 size
= type_size(type
, &align
);
9103 /* If unknown size, we must evaluate it before
9104 evaluating initializers because
9105 initializers can generate global data too
9106 (e.g. string pointers or ISOC99 compound
9107 literals). It also simplifies local
9108 initializers handling */
9109 tok_str_new(&init_str
);
9112 error("unknown type size");
9113 /* get all init string */
9114 if (has_init
== 2) {
9115 /* only get strings */
9116 while (tok
== TOK_STR
|| tok
== TOK_LSTR
) {
9117 tok_str_add_tok(&init_str
);
9122 while (level
> 0 || (tok
!= ',' && tok
!= ';')) {
9124 error("unexpected end of file in initializer");
9125 tok_str_add_tok(&init_str
);
9128 else if (tok
== '}') {
9136 tok_str_add(&init_str
, -1);
9137 tok_str_add(&init_str
, 0);
9140 save_parse_state(&saved_parse_state
);
9142 macro_ptr
= init_str
.str
;
9144 decl_initializer(type
, NULL
, 0, 1, 1);
9145 /* prepare second initializer parsing */
9146 macro_ptr
= init_str
.str
;
9149 /* if still unknown size, error */
9150 size
= type_size(type
, &align
);
9152 error("unknown type size");
9154 /* take into account specified alignment if bigger */
9156 if (ad
->aligned
> align
)
9157 align
= ad
->aligned
;
9158 } else if (ad
->packed
) {
9161 if ((r
& VT_VALMASK
) == VT_LOCAL
) {
9163 if (do_bounds_check
&& (type
->t
& VT_ARRAY
))
9165 loc
= (loc
- size
) & -align
;
9167 /* handles bounds */
9168 /* XXX: currently, since we do only one pass, we cannot track
9169 '&' operators, so we add only arrays */
9170 if (do_bounds_check
&& (type
->t
& VT_ARRAY
)) {
9171 unsigned long *bounds_ptr
;
9172 /* add padding between regions */
9174 /* then add local bound info */
9175 bounds_ptr
= section_ptr_add(lbounds_section
, 2 * sizeof(unsigned long));
9176 bounds_ptr
[0] = addr
;
9177 bounds_ptr
[1] = size
;
9180 /* local variable */
9181 sym_push(v
, type
, r
, addr
);
9183 /* push local reference */
9184 vset(type
, r
, addr
);
9190 if (v
&& scope
== VT_CONST
) {
9191 /* see if the symbol was already defined */
9194 if (!is_compatible_types(&sym
->type
, type
))
9195 error("incompatible types for redefinition of '%s'",
9196 get_tok_str(v
, NULL
));
9197 if (sym
->type
.t
& VT_EXTERN
) {
9198 /* if the variable is extern, it was not allocated */
9199 sym
->type
.t
&= ~VT_EXTERN
;
9200 /* set array size if it was ommited in extern
9202 if ((sym
->type
.t
& VT_ARRAY
) &&
9203 sym
->type
.ref
->c
< 0 &&
9205 sym
->type
.ref
->c
= type
->ref
->c
;
9207 /* we accept several definitions of the same
9208 global variable. this is tricky, because we
9209 must play with the SHN_COMMON type of the symbol */
9210 /* XXX: should check if the variable was already
9211 initialized. It is incorrect to initialized it
9213 /* no init data, we won't add more to the symbol */
9220 /* allocate symbol in corresponding section */
9225 else if (tcc_state
->nocommon
)
9229 data_offset
= sec
->data_offset
;
9230 data_offset
= (data_offset
+ align
- 1) & -align
;
9232 /* very important to increment global pointer at this time
9233 because initializers themselves can create new initializers */
9234 data_offset
+= size
;
9235 /* add padding if bound check */
9236 if (do_bounds_check
)
9238 sec
->data_offset
= data_offset
;
9239 /* allocate section space to put the data */
9240 if (sec
->sh_type
!= SHT_NOBITS
&&
9241 data_offset
> sec
->data_allocated
)
9242 section_realloc(sec
, data_offset
);
9243 /* align section if needed */
9244 if (align
> sec
->sh_addralign
)
9245 sec
->sh_addralign
= align
;
9247 addr
= 0; /* avoid warning */
9251 if (scope
!= VT_CONST
|| !sym
) {
9252 sym
= sym_push(v
, type
, r
| VT_SYM
, 0);
9254 /* update symbol definition */
9256 put_extern_sym(sym
, sec
, addr
, size
);
9259 /* put a common area */
9260 put_extern_sym(sym
, NULL
, align
, size
);
9261 /* XXX: find a nicer way */
9262 esym
= &((ElfW(Sym
) *)symtab_section
->data
)[sym
->c
];
9263 esym
->st_shndx
= SHN_COMMON
;
9268 /* push global reference */
9269 sym
= get_sym_ref(type
, sec
, addr
, size
);
9271 vsetc(type
, VT_CONST
| VT_SYM
, &cval
);
9275 /* handles bounds now because the symbol must be defined
9276 before for the relocation */
9277 if (do_bounds_check
) {
9278 unsigned long *bounds_ptr
;
9280 greloc(bounds_section
, sym
, bounds_section
->data_offset
, R_DATA_32
);
9281 /* then add global bound info */
9282 bounds_ptr
= section_ptr_add(bounds_section
, 2 * sizeof(long));
9283 bounds_ptr
[0] = 0; /* relocated */
9284 bounds_ptr
[1] = size
;
9288 decl_initializer(type
, sec
, addr
, 1, 0);
9289 /* restore parse state if needed */
9291 tok_str_free(init_str
.str
);
9292 restore_parse_state(&saved_parse_state
);
9298 void put_func_debug(Sym
*sym
)
9303 /* XXX: we put here a dummy type */
9304 snprintf(buf
, sizeof(buf
), "%s:%c1",
9305 funcname
, sym
->type
.t
& VT_STATIC
? 'f' : 'F');
9306 put_stabs_r(buf
, N_FUN
, 0, file
->line_num
, 0,
9307 cur_text_section
, sym
->c
);
9308 /* //gr gdb wants a line at the function */
9309 put_stabn(N_SLINE
, 0, file
->line_num
, 0);
9314 /* parse an old style function declaration list */
9315 /* XXX: check multiple parameter */
9316 static void func_decl_list(Sym
*func_sym
)
9323 /* parse each declaration */
9324 while (tok
!= '{' && tok
!= ';' && tok
!= ',' && tok
!= TOK_EOF
) {
9325 if (!parse_btype(&btype
, &ad
))
9326 expect("declaration list");
9327 if (((btype
.t
& VT_BTYPE
) == VT_ENUM
||
9328 (btype
.t
& VT_BTYPE
) == VT_STRUCT
) &&
9330 /* we accept no variable after */
9334 type_decl(&type
, &ad
, &v
, TYPE_DIRECT
);
9335 /* find parameter in function parameter list */
9338 if ((s
->v
& ~SYM_FIELD
) == v
)
9342 error("declaration for parameter '%s' but no such parameter",
9343 get_tok_str(v
, NULL
));
9345 /* check that no storage specifier except 'register' was given */
9346 if (type
.t
& VT_STORAGE
)
9347 error("storage class specified for '%s'", get_tok_str(v
, NULL
));
9348 convert_parameter_type(&type
);
9349 /* we can add the type (NOTE: it could be local to the function) */
9351 /* accept other parameters */
9362 /* parse a function defined by symbol 'sym' and generate its code in
9363 'cur_text_section' */
9364 static void gen_function(Sym
*sym
)
9366 int saved_nocode_wanted
= nocode_wanted
;
9368 ind
= cur_text_section
->data_offset
;
9369 /* NOTE: we patch the symbol size later */
9370 put_extern_sym(sym
, cur_text_section
, ind
, 0);
9371 funcname
= get_tok_str(sym
->v
, NULL
);
9373 /* put debug symbol */
9375 put_func_debug(sym
);
9376 /* push a dummy symbol to enable local sym storage */
9377 sym_push2(&local_stack
, SYM_FIELD
, 0, 0);
9378 gfunc_prolog(&sym
->type
);
9380 block(NULL
, NULL
, NULL
, NULL
, 0, 0);
9383 cur_text_section
->data_offset
= ind
;
9384 label_pop(&global_label_stack
, NULL
);
9385 sym_pop(&local_stack
, NULL
); /* reset local stack */
9386 /* end of function */
9387 /* patch symbol size */
9388 ((ElfW(Sym
) *)symtab_section
->data
)[sym
->c
].st_size
=
9391 put_stabn(N_FUN
, 0, 0, ind
- func_ind
);
9393 /* It's better to crash than to generate wrong code */
9394 cur_text_section
= NULL
;
9395 funcname
= ""; /* for safety */
9396 func_vt
.t
= VT_VOID
; /* for safety */
9397 ind
= 0; /* for safety */
9398 nocode_wanted
= saved_nocode_wanted
;
9401 static void gen_inline_functions(void)
9405 int *str
, inline_generated
;
9407 /* iterate while inline function are referenced */
9409 inline_generated
= 0;
9410 for(sym
= global_stack
; sym
!= NULL
; sym
= sym
->prev
) {
9412 if (((type
->t
& VT_BTYPE
) == VT_FUNC
) &&
9413 (type
->t
& (VT_STATIC
| VT_INLINE
)) ==
9414 (VT_STATIC
| VT_INLINE
) &&
9416 /* the function was used: generate its code and
9417 convert it to a normal function */
9418 str
= INLINE_DEF(sym
->r
);
9419 sym
->r
= VT_SYM
| VT_CONST
;
9420 sym
->type
.t
&= ~VT_INLINE
;
9424 cur_text_section
= text_section
;
9426 macro_ptr
= NULL
; /* fail safe */
9429 inline_generated
= 1;
9432 if (!inline_generated
)
9436 /* free all remaining inline function tokens */
9437 for(sym
= global_stack
; sym
!= NULL
; sym
= sym
->prev
) {
9439 if (((type
->t
& VT_BTYPE
) == VT_FUNC
) &&
9440 (type
->t
& (VT_STATIC
| VT_INLINE
)) ==
9441 (VT_STATIC
| VT_INLINE
)) {
9442 //gr printf("sym %d %s\n", sym->r, get_tok_str(sym->v, NULL));
9443 if (sym
->r
== (VT_SYM
| VT_CONST
)) //gr beware!
9445 str
= INLINE_DEF(sym
->r
);
9447 sym
->r
= 0; /* fail safe */
9452 /* 'l' is VT_LOCAL or VT_CONST to define default storage type */
9453 static void decl(int l
)
9461 if (!parse_btype(&btype
, &ad
)) {
9462 /* skip redundant ';' */
9463 /* XXX: find more elegant solution */
9468 if (l
== VT_CONST
&&
9469 (tok
== TOK_ASM1
|| tok
== TOK_ASM2
|| tok
== TOK_ASM3
)) {
9470 /* global asm block */
9474 /* special test for old K&R protos without explicit int
9475 type. Only accepted when defining global data */
9476 if (l
== VT_LOCAL
|| tok
< TOK_DEFINE
)
9480 if (((btype
.t
& VT_BTYPE
) == VT_ENUM
||
9481 (btype
.t
& VT_BTYPE
) == VT_STRUCT
) &&
9483 /* we accept no variable after */
9487 while (1) { /* iterate thru each declaration */
9489 type_decl(&type
, &ad
, &v
, TYPE_DIRECT
);
9493 type_to_str(buf
, sizeof(buf
), t
, get_tok_str(v
, NULL
));
9494 printf("type = '%s'\n", buf
);
9497 if ((type
.t
& VT_BTYPE
) == VT_FUNC
) {
9498 /* if old style function prototype, we accept a
9501 if (sym
->c
== FUNC_OLD
)
9502 func_decl_list(sym
);
9507 error("cannot use local functions");
9508 if ((type
.t
& VT_BTYPE
) != VT_FUNC
)
9509 expect("function definition");
9511 /* reject abstract declarators in function definition */
9513 while ((sym
= sym
->next
) != NULL
)
9514 if (!(sym
->v
& ~SYM_FIELD
))
9515 expect("identifier");
9517 /* XXX: cannot do better now: convert extern line to static inline */
9518 if ((type
.t
& (VT_EXTERN
| VT_INLINE
)) == (VT_EXTERN
| VT_INLINE
))
9519 type
.t
= (type
.t
& ~VT_EXTERN
) | VT_STATIC
;
9523 if ((sym
->type
.t
& VT_BTYPE
) != VT_FUNC
)
9525 /* specific case: if not func_call defined, we put
9526 the one of the prototype */
9527 /* XXX: should have default value */
9528 r
= sym
->type
.ref
->r
;
9529 if (FUNC_CALL(r
) != FUNC_CDECL
9530 && FUNC_CALL(type
.ref
->r
) == FUNC_CDECL
)
9531 FUNC_CALL(type
.ref
->r
) = FUNC_CALL(r
);
9533 FUNC_EXPORT(type
.ref
->r
) = 1;
9535 if (!is_compatible_types(&sym
->type
, &type
)) {
9537 error("incompatible types for redefinition of '%s'",
9538 get_tok_str(v
, NULL
));
9540 /* if symbol is already defined, then put complete type */
9543 /* put function symbol */
9544 sym
= global_identifier_push(v
, type
.t
, 0);
9545 sym
->type
.ref
= type
.ref
;
9548 /* static inline functions are just recorded as a kind
9549 of macro. Their code will be emitted at the end of
9550 the compilation unit only if they are used */
9551 if ((type
.t
& (VT_INLINE
| VT_STATIC
)) ==
9552 (VT_INLINE
| VT_STATIC
)) {
9553 TokenString func_str
;
9556 tok_str_new(&func_str
);
9562 error("unexpected end of file");
9563 tok_str_add_tok(&func_str
);
9568 } else if (t
== '}') {
9570 if (block_level
== 0)
9574 tok_str_add(&func_str
, -1);
9575 tok_str_add(&func_str
, 0);
9576 INLINE_DEF(sym
->r
) = func_str
.str
;
9578 /* compute text section */
9579 cur_text_section
= ad
.section
;
9580 if (!cur_text_section
)
9581 cur_text_section
= text_section
;
9582 sym
->r
= VT_SYM
| VT_CONST
;
9587 if (btype
.t
& VT_TYPEDEF
) {
9588 /* save typedefed type */
9589 /* XXX: test storage specifiers ? */
9590 sym
= sym_push(v
, &type
, 0, 0);
9591 sym
->type
.t
|= VT_TYPEDEF
;
9592 } else if ((type
.t
& VT_BTYPE
) == VT_FUNC
) {
9593 /* external function definition */
9594 /* specific case for func_call attribute */
9596 type
.ref
->r
= ad
.func_attr
;
9597 external_sym(v
, &type
, 0);
9599 /* not lvalue if array */
9601 if (!(type
.t
& VT_ARRAY
))
9602 r
|= lvalue_type(type
.t
);
9603 has_init
= (tok
== '=');
9604 if ((btype
.t
& VT_EXTERN
) ||
9605 ((type
.t
& VT_ARRAY
) && (type
.t
& VT_STATIC
) &&
9606 !has_init
&& l
== VT_CONST
&& type
.ref
->c
< 0)) {
9607 /* external variable */
9608 /* NOTE: as GCC, uninitialized global static
9609 arrays of null size are considered as
9611 external_sym(v
, &type
, r
);
9613 type
.t
|= (btype
.t
& VT_STATIC
); /* Retain "static". */
9614 if (type
.t
& VT_STATIC
)
9620 decl_initializer_alloc(&type
, &ad
, r
,
9634 /* better than nothing, but needs extension to handle '-E' option
9636 static void preprocess_init(TCCState
*s1
)
9638 s1
->include_stack_ptr
= s1
->include_stack
;
9639 /* XXX: move that before to avoid having to initialize
9640 file->ifdef_stack_ptr ? */
9641 s1
->ifdef_stack_ptr
= s1
->ifdef_stack
;
9642 file
->ifdef_stack_ptr
= s1
->ifdef_stack_ptr
;
9644 /* XXX: not ANSI compliant: bound checking says error */
9646 s1
->pack_stack
[0] = 0;
9647 s1
->pack_stack_ptr
= s1
->pack_stack
;
9650 /* compile the C file opened in 'file'. Return non zero if errors. */
9651 static int tcc_compile(TCCState
*s1
)
9655 volatile int section_sym
;
9658 printf("%s: **** new file\n", file
->filename
);
9660 preprocess_init(s1
);
9662 cur_text_section
= NULL
;
9664 anon_sym
= SYM_FIRST_ANOM
;
9666 /* file info: full path + filename */
9667 section_sym
= 0; /* avoid warning */
9669 section_sym
= put_elf_sym(symtab_section
, 0, 0,
9670 ELFW(ST_INFO
)(STB_LOCAL
, STT_SECTION
), 0,
9671 text_section
->sh_num
, NULL
);
9672 getcwd(buf
, sizeof(buf
));
9674 normalize_slashes(buf
);
9676 pstrcat(buf
, sizeof(buf
), "/");
9677 put_stabs_r(buf
, N_SO
, 0, 0,
9678 text_section
->data_offset
, text_section
, section_sym
);
9679 put_stabs_r(file
->filename
, N_SO
, 0, 0,
9680 text_section
->data_offset
, text_section
, section_sym
);
9682 /* an elf symbol of type STT_FILE must be put so that STB_LOCAL
9683 symbols can be safely used */
9684 put_elf_sym(symtab_section
, 0, 0,
9685 ELFW(ST_INFO
)(STB_LOCAL
, STT_FILE
), 0,
9686 SHN_ABS
, file
->filename
);
9688 /* define some often used types */
9689 int_type
.t
= VT_INT
;
9691 char_pointer_type
.t
= VT_BYTE
;
9692 mk_pointer(&char_pointer_type
);
9694 func_old_type
.t
= VT_FUNC
;
9695 func_old_type
.ref
= sym_push(SYM_FIELD
, &int_type
, FUNC_CDECL
, FUNC_OLD
);
9697 #if defined(TCC_ARM_EABI) && defined(TCC_ARM_VFP)
9698 float_type
.t
= VT_FLOAT
;
9699 double_type
.t
= VT_DOUBLE
;
9701 func_float_type
.t
= VT_FUNC
;
9702 func_float_type
.ref
= sym_push(SYM_FIELD
, &float_type
, FUNC_CDECL
, FUNC_OLD
);
9703 func_double_type
.t
= VT_FUNC
;
9704 func_double_type
.ref
= sym_push(SYM_FIELD
, &double_type
, FUNC_CDECL
, FUNC_OLD
);
9708 /* define 'void *alloca(unsigned int)' builtin function */
9713 sym
= sym_push(p
, mk_pointer(VT_VOID
), FUNC_CDECL
, FUNC_NEW
);
9714 s1
= sym_push(SYM_FIELD
, VT_UNSIGNED
| VT_INT
, 0, 0);
9717 sym_push(TOK_alloca
, VT_FUNC
| (p
<< VT_STRUCT_SHIFT
), VT_CONST
, 0);
9721 define_start
= define_stack
;
9724 if (setjmp(s1
->error_jmp_buf
) == 0) {
9726 s1
->error_set_jmp_enabled
= 1;
9728 ch
= file
->buf_ptr
[0];
9729 tok_flags
= TOK_FLAG_BOL
| TOK_FLAG_BOF
;
9730 parse_flags
= PARSE_FLAG_PREPROCESS
| PARSE_FLAG_TOK_NUM
;
9734 expect("declaration");
9736 /* end of translation unit info */
9738 put_stabs_r(NULL
, N_SO
, 0, 0,
9739 text_section
->data_offset
, text_section
, section_sym
);
9742 s1
->error_set_jmp_enabled
= 0;
9744 /* reset define stack, but leave -Dsymbols (may be incorrect if
9745 they are undefined) */
9746 free_defines(define_start
);
9748 gen_inline_functions();
9750 sym_pop(&global_stack
, NULL
);
9751 sym_pop(&local_stack
, NULL
);
9753 return s1
->nb_errors
!= 0 ? -1 : 0;
9756 /* Preprocess the current file */
9757 /* XXX: add line and file infos, add options to preserve spaces */
9758 static int tcc_preprocess(TCCState
*s1
)
9761 BufferedFile
*file_ref
;
9762 int token_seen
, line_ref
;
9764 preprocess_init(s1
);
9765 define_start
= define_stack
;
9766 ch
= file
->buf_ptr
[0];
9768 tok_flags
= TOK_FLAG_BOL
| TOK_FLAG_BOF
;
9769 parse_flags
= PARSE_FLAG_ASM_COMMENTS
| PARSE_FLAG_PREPROCESS
|
9770 PARSE_FLAG_LINEFEED
;
9778 if (tok
== TOK_EOF
) {
9780 } else if (tok
== TOK_LINEFEED
) {
9785 } else if (token_seen
) {
9786 fputc(' ', s1
->outfile
);
9788 int d
= file
->line_num
- line_ref
;
9789 if (file
!= file_ref
|| d
< 0 || d
>= 8)
9790 fprintf(s1
->outfile
, "# %d \"%s\"\n", file
->line_num
, file
->filename
);
9793 fputs("\n", s1
->outfile
), --d
;
9794 line_ref
= (file_ref
= file
)->line_num
;
9797 fputs(get_tok_str(tok
, &tokc
), s1
->outfile
);
9799 free_defines(define_start
);
9804 int tcc_compile_string(TCCState
*s
, const char *str
)
9806 BufferedFile bf1
, *bf
= &bf1
;
9810 /* init file structure */
9812 /* XXX: avoid copying */
9814 buf
= tcc_malloc(len
+ 1);
9817 memcpy(buf
, str
, len
);
9820 bf
->buf_end
= buf
+ len
;
9821 pstrcpy(bf
->filename
, sizeof(bf
->filename
), "<string>");
9824 ret
= tcc_compile(s
);
9828 /* currently, no need to close */
9833 /* define a preprocessor symbol. A value can also be provided with the '=' operator */
9834 void tcc_define_symbol(TCCState
*s1
, const char *sym
, const char *value
)
9836 BufferedFile bf1
, *bf
= &bf1
;
9838 pstrcpy(bf
->buffer
, IO_BUF_SIZE
, sym
);
9839 pstrcat(bf
->buffer
, IO_BUF_SIZE
, " ");
9843 pstrcat(bf
->buffer
, IO_BUF_SIZE
, value
);
9845 /* init file structure */
9847 bf
->buf_ptr
= bf
->buffer
;
9848 bf
->buf_end
= bf
->buffer
+ strlen(bf
->buffer
);
9849 *bf
->buf_end
= CH_EOB
;
9850 bf
->filename
[0] = '\0';
9854 s1
->include_stack_ptr
= s1
->include_stack
;
9856 /* parse with define parser */
9857 ch
= file
->buf_ptr
[0];
9863 /* undefine a preprocessor symbol */
9864 void tcc_undefine_symbol(TCCState
*s1
, const char *sym
)
9868 ts
= tok_alloc(sym
, strlen(sym
));
9869 s
= define_find(ts
->tok
);
9870 /* undefine symbol by putting an invalid name */
9875 #ifdef CONFIG_TCC_ASM
9877 #ifdef TCC_TARGET_I386
9878 #include "i386-asm.c"
9883 static void asm_instr(void)
9885 error("inline asm() not supported");
9887 static void asm_global_instr(void)
9889 error("inline asm() not supported");
9895 #ifdef TCC_TARGET_COFF
9896 #include "tcccoff.c"
9899 #ifdef TCC_TARGET_PE
9903 /* print the position in the source file of PC value 'pc' by reading
9904 the stabs debug information */
9905 static void rt_printline(unsigned long wanted_pc
)
9907 Stab_Sym
*sym
, *sym_end
;
9908 char func_name
[128], last_func_name
[128];
9909 unsigned long func_addr
, last_pc
, pc
;
9910 const char *incl_files
[INCLUDE_STACK_SIZE
];
9911 int incl_index
, len
, last_line_num
, i
;
9912 const char *str
, *p
;
9914 fprintf(stderr
, "0x%08lx:", wanted_pc
);
9916 func_name
[0] = '\0';
9919 last_func_name
[0] = '\0';
9920 last_pc
= 0xffffffff;
9922 sym
= (Stab_Sym
*)stab_section
->data
+ 1;
9923 sym_end
= (Stab_Sym
*)(stab_section
->data
+ stab_section
->data_offset
);
9924 while (sym
< sym_end
) {
9925 switch(sym
->n_type
) {
9926 /* function start or end */
9928 if (sym
->n_strx
== 0) {
9929 /* we test if between last line and end of function */
9930 pc
= sym
->n_value
+ func_addr
;
9931 if (wanted_pc
>= last_pc
&& wanted_pc
< pc
)
9933 func_name
[0] = '\0';
9936 str
= stabstr_section
->data
+ sym
->n_strx
;
9937 p
= strchr(str
, ':');
9939 pstrcpy(func_name
, sizeof(func_name
), str
);
9942 if (len
> sizeof(func_name
) - 1)
9943 len
= sizeof(func_name
) - 1;
9944 memcpy(func_name
, str
, len
);
9945 func_name
[len
] = '\0';
9947 func_addr
= sym
->n_value
;
9950 /* line number info */
9952 pc
= sym
->n_value
+ func_addr
;
9953 if (wanted_pc
>= last_pc
&& wanted_pc
< pc
)
9956 last_line_num
= sym
->n_desc
;
9958 strcpy(last_func_name
, func_name
);
9962 str
= stabstr_section
->data
+ sym
->n_strx
;
9964 if (incl_index
< INCLUDE_STACK_SIZE
) {
9965 incl_files
[incl_index
++] = str
;
9973 if (sym
->n_strx
== 0) {
9974 incl_index
= 0; /* end of translation unit */
9976 str
= stabstr_section
->data
+ sym
->n_strx
;
9977 /* do not add path */
9979 if (len
> 0 && str
[len
- 1] != '/')
9987 /* second pass: we try symtab symbols (no line number info) */
9990 ElfW(Sym
) *sym
, *sym_end
;
9993 sym_end
= (ElfW(Sym
) *)(symtab_section
->data
+ symtab_section
->data_offset
);
9994 for(sym
= (ElfW(Sym
) *)symtab_section
->data
+ 1;
9997 type
= ELFW(ST_TYPE
)(sym
->st_info
);
9998 if (type
== STT_FUNC
) {
9999 if (wanted_pc
>= sym
->st_value
&&
10000 wanted_pc
< sym
->st_value
+ sym
->st_size
) {
10001 pstrcpy(last_func_name
, sizeof(last_func_name
),
10002 strtab_section
->data
+ sym
->st_name
);
10008 /* did not find any info: */
10009 fprintf(stderr
, " ???\n");
10012 if (last_func_name
[0] != '\0') {
10013 fprintf(stderr
, " %s()", last_func_name
);
10015 if (incl_index
> 0) {
10016 fprintf(stderr
, " (%s:%d",
10017 incl_files
[incl_index
- 1], last_line_num
);
10018 for(i
= incl_index
- 2; i
>= 0; i
--)
10019 fprintf(stderr
, ", included from %s", incl_files
[i
]);
10020 fprintf(stderr
, ")");
10022 fprintf(stderr
, "\n");
10025 #if !defined(_WIN32) && !defined(CONFIG_TCCBOOT)
10029 /* fix for glibc 2.1 */
10031 #define REG_EIP EIP
10032 #define REG_EBP EBP
10035 /* return the PC at frame level 'level'. Return non zero if not found */
10036 static int rt_get_caller_pc(unsigned long *paddr
,
10037 ucontext_t
*uc
, int level
)
10043 #if defined(__FreeBSD__)
10044 *paddr
= uc
->uc_mcontext
.mc_eip
;
10045 #elif defined(__dietlibc__)
10046 *paddr
= uc
->uc_mcontext
.eip
;
10048 *paddr
= uc
->uc_mcontext
.gregs
[REG_EIP
];
10052 #if defined(__FreeBSD__)
10053 fp
= uc
->uc_mcontext
.mc_ebp
;
10054 #elif defined(__dietlibc__)
10055 fp
= uc
->uc_mcontext
.ebp
;
10057 fp
= uc
->uc_mcontext
.gregs
[REG_EBP
];
10059 for(i
=1;i
<level
;i
++) {
10060 /* XXX: check address validity with program info */
10061 if (fp
<= 0x1000 || fp
>= 0xc0000000)
10063 fp
= ((unsigned long *)fp
)[0];
10065 *paddr
= ((unsigned long *)fp
)[1];
10069 #elif defined(__x86_64__)
10070 /* return the PC at frame level 'level'. Return non zero if not found */
10071 static int rt_get_caller_pc(unsigned long *paddr
,
10072 ucontext_t
*uc
, int level
)
10078 /* XXX: only support linux */
10079 *paddr
= uc
->uc_mcontext
.gregs
[REG_RIP
];
10082 fp
= uc
->uc_mcontext
.gregs
[REG_RBP
];
10083 for(i
=1;i
<level
;i
++) {
10084 /* XXX: check address validity with program info */
10085 if (fp
<= 0x1000 || fp
>= 0xc0000000)
10087 fp
= ((unsigned long *)fp
)[0];
10089 *paddr
= ((unsigned long *)fp
)[1];
10095 #warning add arch specific rt_get_caller_pc()
10097 static int rt_get_caller_pc(unsigned long *paddr
,
10098 ucontext_t
*uc
, int level
)
10104 /* emit a run time error at position 'pc' */
10105 void rt_error(ucontext_t
*uc
, const char *fmt
, ...)
10112 fprintf(stderr
, "Runtime error: ");
10113 vfprintf(stderr
, fmt
, ap
);
10114 fprintf(stderr
, "\n");
10115 for(i
=0;i
<num_callers
;i
++) {
10116 if (rt_get_caller_pc(&pc
, uc
, i
) < 0)
10119 fprintf(stderr
, "at ");
10121 fprintf(stderr
, "by ");
10128 /* signal handler for fatal errors */
10129 static void sig_error(int signum
, siginfo_t
*siginf
, void *puc
)
10131 ucontext_t
*uc
= puc
;
10135 switch(siginf
->si_code
) {
10138 rt_error(uc
, "division by zero");
10141 rt_error(uc
, "floating point exception");
10147 if (rt_bound_error_msg
&& *rt_bound_error_msg
)
10148 rt_error(uc
, *rt_bound_error_msg
);
10150 rt_error(uc
, "dereferencing invalid pointer");
10153 rt_error(uc
, "illegal instruction");
10156 rt_error(uc
, "abort() called");
10159 rt_error(uc
, "caught signal %d", signum
);
10166 /* do all relocations (needed before using tcc_get_symbol()) */
10167 int tcc_relocate(TCCState
*s1
)
10174 #ifdef TCC_TARGET_PE
10175 pe_add_runtime(s1
);
10177 tcc_add_runtime(s1
);
10180 relocate_common_syms();
10182 tcc_add_linker_symbols(s1
);
10183 #ifndef TCC_TARGET_PE
10184 build_got_entries(s1
);
10186 /* compute relocation address : section are relocated in place. We
10187 also alloc the bss space */
10188 for(i
= 1; i
< s1
->nb_sections
; i
++) {
10189 s
= s1
->sections
[i
];
10190 if (s
->sh_flags
& SHF_ALLOC
) {
10191 if (s
->sh_type
== SHT_NOBITS
)
10192 s
->data
= tcc_mallocz(s
->data_offset
);
10193 s
->sh_addr
= (unsigned long)s
->data
;
10197 relocate_syms(s1
, 1);
10199 if (s1
->nb_errors
!= 0)
10202 /* relocate each section */
10203 for(i
= 1; i
< s1
->nb_sections
; i
++) {
10204 s
= s1
->sections
[i
];
10206 relocate_section(s1
, s
);
10209 /* mark executable sections as executable in memory */
10210 for(i
= 1; i
< s1
->nb_sections
; i
++) {
10211 s
= s1
->sections
[i
];
10212 if ((s
->sh_flags
& (SHF_ALLOC
| SHF_EXECINSTR
)) ==
10213 (SHF_ALLOC
| SHF_EXECINSTR
))
10214 set_pages_executable(s
->data
, s
->data_offset
);
10219 /* launch the compiled program with the given arguments */
10220 int tcc_run(TCCState
*s1
, int argc
, char **argv
)
10222 int (*prog_main
)(int, char **);
10224 if (tcc_relocate(s1
) < 0)
10227 prog_main
= tcc_get_symbol_err(s1
, "main");
10230 #if defined(_WIN32) || defined(CONFIG_TCCBOOT)
10231 error("debug mode currently not available for Windows");
10233 struct sigaction sigact
;
10234 /* install TCC signal handlers to print debug info on fatal
10236 sigact
.sa_flags
= SA_SIGINFO
| SA_RESETHAND
;
10237 sigact
.sa_sigaction
= sig_error
;
10238 sigemptyset(&sigact
.sa_mask
);
10239 sigaction(SIGFPE
, &sigact
, NULL
);
10240 sigaction(SIGILL
, &sigact
, NULL
);
10241 sigaction(SIGSEGV
, &sigact
, NULL
);
10242 sigaction(SIGBUS
, &sigact
, NULL
);
10243 sigaction(SIGABRT
, &sigact
, NULL
);
10247 #ifdef CONFIG_TCC_BCHECK
10248 if (do_bounds_check
) {
10249 void (*bound_init
)(void);
10251 /* set error function */
10252 rt_bound_error_msg
= (void *)tcc_get_symbol_err(s1
,
10253 "__bound_error_msg");
10255 /* XXX: use .init section so that it also work in binary ? */
10256 bound_init
= (void *)tcc_get_symbol_err(s1
, "__bound_init");
10260 return (*prog_main
)(argc
, argv
);
10263 void tcc_memstats(void)
10266 printf("memory in use: %d\n", mem_cur_size
);
10270 static void tcc_cleanup(void)
10274 if (NULL
== tcc_state
)
10278 /* free -D defines */
10279 free_defines(NULL
);
10282 n
= tok_ident
- TOK_IDENT
;
10283 for(i
= 0; i
< n
; i
++)
10284 tcc_free(table_ident
[i
]);
10285 tcc_free(table_ident
);
10287 /* free sym_pools */
10288 dynarray_reset(&sym_pools
, &nb_sym_pools
);
10289 /* string buffer */
10290 cstr_free(&tokcstr
);
10291 /* reset symbol stack */
10292 sym_free_first
= NULL
;
10293 /* cleanup from error/setjmp */
10297 TCCState
*tcc_new(void)
10306 s
= tcc_mallocz(sizeof(TCCState
));
10310 s
->output_type
= TCC_OUTPUT_MEMORY
;
10312 /* init isid table */
10313 for(i
=CH_EOF
;i
<256;i
++)
10314 isidnum_table
[i
-CH_EOF
] = isid(i
) || isnum(i
);
10316 /* add all tokens */
10317 table_ident
= NULL
;
10318 memset(hash_ident
, 0, TOK_HASH_SIZE
* sizeof(TokenSym
*));
10320 tok_ident
= TOK_IDENT
;
10329 ts
= tok_alloc(p
, r
- p
- 1);
10333 /* we add dummy defines for some special macros to speed up tests
10334 and to have working defined() */
10335 define_push(TOK___LINE__
, MACRO_OBJ
, NULL
, NULL
);
10336 define_push(TOK___FILE__
, MACRO_OBJ
, NULL
, NULL
);
10337 define_push(TOK___DATE__
, MACRO_OBJ
, NULL
, NULL
);
10338 define_push(TOK___TIME__
, MACRO_OBJ
, NULL
, NULL
);
10340 /* standard defines */
10341 tcc_define_symbol(s
, "__STDC__", NULL
);
10342 tcc_define_symbol(s
, "__STDC_VERSION__", "199901L");
10343 #if defined(TCC_TARGET_I386)
10344 tcc_define_symbol(s
, "__i386__", NULL
);
10346 #if defined(TCC_TARGET_X86_64)
10347 tcc_define_symbol(s
, "__x86_64__", NULL
);
10349 #if defined(TCC_TARGET_ARM)
10350 tcc_define_symbol(s
, "__ARM_ARCH_4__", NULL
);
10351 tcc_define_symbol(s
, "__arm_elf__", NULL
);
10352 tcc_define_symbol(s
, "__arm_elf", NULL
);
10353 tcc_define_symbol(s
, "arm_elf", NULL
);
10354 tcc_define_symbol(s
, "__arm__", NULL
);
10355 tcc_define_symbol(s
, "__arm", NULL
);
10356 tcc_define_symbol(s
, "arm", NULL
);
10357 tcc_define_symbol(s
, "__APCS_32__", NULL
);
10359 #ifdef TCC_TARGET_PE
10360 tcc_define_symbol(s
, "_WIN32", NULL
);
10362 tcc_define_symbol(s
, "__unix__", NULL
);
10363 tcc_define_symbol(s
, "__unix", NULL
);
10364 #if defined(__linux)
10365 tcc_define_symbol(s
, "__linux__", NULL
);
10366 tcc_define_symbol(s
, "__linux", NULL
);
10369 /* tiny C specific defines */
10370 tcc_define_symbol(s
, "__TINYC__", NULL
);
10372 /* tiny C & gcc defines */
10373 tcc_define_symbol(s
, "__SIZE_TYPE__", "unsigned int");
10374 tcc_define_symbol(s
, "__PTRDIFF_TYPE__", "int");
10375 #ifdef TCC_TARGET_PE
10376 tcc_define_symbol(s
, "__WCHAR_TYPE__", "unsigned short");
10378 tcc_define_symbol(s
, "__WCHAR_TYPE__", "int");
10381 #ifndef TCC_TARGET_PE
10382 /* default library paths */
10383 tcc_add_library_path(s
, CONFIG_SYSROOT
"/usr/local/lib");
10384 tcc_add_library_path(s
, CONFIG_SYSROOT
"/usr/lib");
10385 tcc_add_library_path(s
, CONFIG_SYSROOT
"/lib");
10388 /* no section zero */
10389 dynarray_add((void ***)&s
->sections
, &s
->nb_sections
, NULL
);
10391 /* create standard sections */
10392 text_section
= new_section(s
, ".text", SHT_PROGBITS
, SHF_ALLOC
| SHF_EXECINSTR
);
10393 data_section
= new_section(s
, ".data", SHT_PROGBITS
, SHF_ALLOC
| SHF_WRITE
);
10394 bss_section
= new_section(s
, ".bss", SHT_NOBITS
, SHF_ALLOC
| SHF_WRITE
);
10396 /* symbols are always generated for linking stage */
10397 symtab_section
= new_symtab(s
, ".symtab", SHT_SYMTAB
, 0,
10399 ".hashtab", SHF_PRIVATE
);
10400 strtab_section
= symtab_section
->link
;
10402 /* private symbol table for dynamic symbols */
10403 s
->dynsymtab_section
= new_symtab(s
, ".dynsymtab", SHT_SYMTAB
, SHF_PRIVATE
,
10405 ".dynhashtab", SHF_PRIVATE
);
10406 s
->alacarte_link
= 1;
10408 #ifdef CHAR_IS_UNSIGNED
10409 s
->char_is_unsigned
= 1;
10411 #if defined(TCC_TARGET_PE) && 0
10412 /* XXX: currently the PE linker is not ready to support that */
10413 s
->leading_underscore
= 1;
10416 #ifdef TCC_TARGET_X86_64
10417 s
->jmp_table
= NULL
;
10422 void tcc_delete(TCCState
*s1
)
10428 /* free all sections */
10429 free_section(s1
->dynsymtab_section
);
10431 for(i
= 1; i
< s1
->nb_sections
; i
++)
10432 free_section(s1
->sections
[i
]);
10433 tcc_free(s1
->sections
);
10435 /* free any loaded DLLs */
10436 for ( i
= 0; i
< s1
->nb_loaded_dlls
; i
++)
10438 DLLReference
*ref
= s1
->loaded_dlls
[i
];
10440 dlclose(ref
->handle
);
10443 /* free loaded dlls array */
10444 dynarray_reset(&s1
->loaded_dlls
, &s1
->nb_loaded_dlls
);
10446 /* free library paths */
10447 dynarray_reset(&s1
->library_paths
, &s1
->nb_library_paths
);
10449 /* free include paths */
10450 dynarray_reset(&s1
->cached_includes
, &s1
->nb_cached_includes
);
10451 dynarray_reset(&s1
->include_paths
, &s1
->nb_include_paths
);
10452 dynarray_reset(&s1
->sysinclude_paths
, &s1
->nb_sysinclude_paths
);
10454 #ifdef TCC_TARGET_X86_64
10455 tcc_free(s1
->jmp_table
);
10460 int tcc_add_include_path(TCCState
*s1
, const char *pathname
)
10464 pathname1
= tcc_strdup(pathname
);
10465 dynarray_add((void ***)&s1
->include_paths
, &s1
->nb_include_paths
, pathname1
);
10469 int tcc_add_sysinclude_path(TCCState
*s1
, const char *pathname
)
10473 pathname1
= tcc_strdup(pathname
);
10474 dynarray_add((void ***)&s1
->sysinclude_paths
, &s1
->nb_sysinclude_paths
, pathname1
);
10478 static int tcc_add_file_internal(TCCState
*s1
, const char *filename
, int flags
)
10483 BufferedFile
*saved_file
;
10485 /* find source file type with extension */
10486 ext
= tcc_fileextension(filename
);
10490 /* open the file */
10492 file
= tcc_open(s1
, filename
);
10494 if (flags
& AFF_PRINT_ERROR
) {
10495 error_noabort("file '%s' not found", filename
);
10501 if (flags
& AFF_PREPROCESS
) {
10502 ret
= tcc_preprocess(s1
);
10503 } else if (!ext
[0] || !strcmp(ext
, "c")) {
10504 /* C file assumed */
10505 ret
= tcc_compile(s1
);
10507 #ifdef CONFIG_TCC_ASM
10508 if (!strcmp(ext
, "S")) {
10509 /* preprocessed assembler */
10510 ret
= tcc_assemble(s1
, 1);
10511 } else if (!strcmp(ext
, "s")) {
10512 /* non preprocessed assembler */
10513 ret
= tcc_assemble(s1
, 0);
10516 #ifdef TCC_TARGET_PE
10517 if (!strcmp(ext
, "def")) {
10518 ret
= pe_load_def_file(s1
, file
->fd
);
10523 /* assume executable format: auto guess file type */
10524 ret
= read(fd
, &ehdr
, sizeof(ehdr
));
10525 lseek(fd
, 0, SEEK_SET
);
10527 error_noabort("could not read header");
10529 } else if (ret
!= sizeof(ehdr
)) {
10530 goto try_load_script
;
10533 if (ehdr
.e_ident
[0] == ELFMAG0
&&
10534 ehdr
.e_ident
[1] == ELFMAG1
&&
10535 ehdr
.e_ident
[2] == ELFMAG2
&&
10536 ehdr
.e_ident
[3] == ELFMAG3
) {
10537 file
->line_num
= 0; /* do not display line number if error */
10538 if (ehdr
.e_type
== ET_REL
) {
10539 ret
= tcc_load_object_file(s1
, fd
, 0);
10540 } else if (ehdr
.e_type
== ET_DYN
) {
10541 if (s1
->output_type
== TCC_OUTPUT_MEMORY
) {
10542 #ifdef TCC_TARGET_PE
10546 h
= dlopen(filename
, RTLD_GLOBAL
| RTLD_LAZY
);
10553 ret
= tcc_load_dll(s1
, fd
, filename
,
10554 (flags
& AFF_REFERENCED_DLL
) != 0);
10557 error_noabort("unrecognized ELF file");
10560 } else if (memcmp((char *)&ehdr
, ARMAG
, 8) == 0) {
10561 file
->line_num
= 0; /* do not display line number if error */
10562 ret
= tcc_load_archive(s1
, fd
);
10564 #ifdef TCC_TARGET_COFF
10565 if (*(uint16_t *)(&ehdr
) == COFF_C67_MAGIC
) {
10566 ret
= tcc_load_coff(s1
, fd
);
10569 #ifdef TCC_TARGET_PE
10570 if (pe_test_res_file(&ehdr
, ret
)) {
10571 ret
= pe_load_res_file(s1
, fd
);
10575 /* as GNU ld, consider it is an ld script if not recognized */
10577 ret
= tcc_load_ldscript(s1
);
10579 error_noabort("unrecognized file type");
10594 int tcc_add_file(TCCState
*s
, const char *filename
)
10596 return tcc_add_file_internal(s
, filename
, AFF_PRINT_ERROR
);
10599 int tcc_add_library_path(TCCState
*s
, const char *pathname
)
10603 pathname1
= tcc_strdup(pathname
);
10604 dynarray_add((void ***)&s
->library_paths
, &s
->nb_library_paths
, pathname1
);
10608 /* find and load a dll. Return non zero if not found */
10609 /* XXX: add '-rpath' option support ? */
10610 static int tcc_add_dll(TCCState
*s
, const char *filename
, int flags
)
10615 for(i
= 0; i
< s
->nb_library_paths
; i
++) {
10616 snprintf(buf
, sizeof(buf
), "%s/%s",
10617 s
->library_paths
[i
], filename
);
10618 if (tcc_add_file_internal(s
, buf
, flags
) == 0)
10624 /* the library name is the same as the argument of the '-l' option */
10625 int tcc_add_library(TCCState
*s
, const char *libraryname
)
10630 /* first we look for the dynamic library if not static linking */
10631 if (!s
->static_link
) {
10632 #ifdef TCC_TARGET_PE
10633 snprintf(buf
, sizeof(buf
), "%s.def", libraryname
);
10635 snprintf(buf
, sizeof(buf
), "lib%s.so", libraryname
);
10637 if (tcc_add_dll(s
, buf
, 0) == 0)
10641 /* then we look for the static library */
10642 for(i
= 0; i
< s
->nb_library_paths
; i
++) {
10643 snprintf(buf
, sizeof(buf
), "%s/lib%s.a",
10644 s
->library_paths
[i
], libraryname
);
10645 if (tcc_add_file_internal(s
, buf
, 0) == 0)
10651 int tcc_add_symbol(TCCState
*s
, const char *name
, unsigned long val
)
10653 add_elf_sym(symtab_section
, val
, 0,
10654 ELFW(ST_INFO
)(STB_GLOBAL
, STT_NOTYPE
), 0,
10659 int tcc_set_output_type(TCCState
*s
, int output_type
)
10663 s
->output_type
= output_type
;
10665 if (!s
->nostdinc
) {
10666 /* default include paths */
10667 /* XXX: reverse order needed if -isystem support */
10668 #ifndef TCC_TARGET_PE
10669 tcc_add_sysinclude_path(s
, CONFIG_SYSROOT
"/usr/local/include");
10670 tcc_add_sysinclude_path(s
, CONFIG_SYSROOT
"/usr/include");
10672 snprintf(buf
, sizeof(buf
), "%s/include", tcc_lib_path
);
10673 tcc_add_sysinclude_path(s
, buf
);
10674 #ifdef TCC_TARGET_PE
10675 snprintf(buf
, sizeof(buf
), "%s/include/winapi", tcc_lib_path
);
10676 tcc_add_sysinclude_path(s
, buf
);
10680 /* if bound checking, then add corresponding sections */
10681 #ifdef CONFIG_TCC_BCHECK
10682 if (do_bounds_check
) {
10683 /* define symbol */
10684 tcc_define_symbol(s
, "__BOUNDS_CHECKING_ON", NULL
);
10685 /* create bounds sections */
10686 bounds_section
= new_section(s
, ".bounds",
10687 SHT_PROGBITS
, SHF_ALLOC
);
10688 lbounds_section
= new_section(s
, ".lbounds",
10689 SHT_PROGBITS
, SHF_ALLOC
);
10693 if (s
->char_is_unsigned
) {
10694 tcc_define_symbol(s
, "__CHAR_UNSIGNED__", NULL
);
10697 /* add debug sections */
10700 stab_section
= new_section(s
, ".stab", SHT_PROGBITS
, 0);
10701 stab_section
->sh_entsize
= sizeof(Stab_Sym
);
10702 stabstr_section
= new_section(s
, ".stabstr", SHT_STRTAB
, 0);
10703 put_elf_str(stabstr_section
, "");
10704 stab_section
->link
= stabstr_section
;
10705 /* put first entry */
10706 put_stabs("", 0, 0, 0, 0);
10709 /* add libc crt1/crti objects */
10710 #ifndef TCC_TARGET_PE
10711 if ((output_type
== TCC_OUTPUT_EXE
|| output_type
== TCC_OUTPUT_DLL
) &&
10713 if (output_type
!= TCC_OUTPUT_DLL
)
10714 tcc_add_file(s
, CONFIG_TCC_CRT_PREFIX
"/crt1.o");
10715 tcc_add_file(s
, CONFIG_TCC_CRT_PREFIX
"/crti.o");
10719 #ifdef TCC_TARGET_PE
10720 snprintf(buf
, sizeof(buf
), "%s/lib", tcc_lib_path
);
10721 tcc_add_library_path(s
, buf
);
10727 #define WD_ALL 0x0001 /* warning is activated when using -Wall */
10728 #define FD_INVERT 0x0002 /* invert value before storing */
10730 typedef struct FlagDef
{
10736 static const FlagDef warning_defs
[] = {
10737 { offsetof(TCCState
, warn_unsupported
), 0, "unsupported" },
10738 { offsetof(TCCState
, warn_write_strings
), 0, "write-strings" },
10739 { offsetof(TCCState
, warn_error
), 0, "error" },
10740 { offsetof(TCCState
, warn_implicit_function_declaration
), WD_ALL
,
10741 "implicit-function-declaration" },
10744 static int set_flag(TCCState
*s
, const FlagDef
*flags
, int nb_flags
,
10745 const char *name
, int value
)
10752 if (r
[0] == 'n' && r
[1] == 'o' && r
[2] == '-') {
10756 for(i
= 0, p
= flags
; i
< nb_flags
; i
++, p
++) {
10757 if (!strcmp(r
, p
->name
))
10762 if (p
->flags
& FD_INVERT
)
10764 *(int *)((uint8_t *)s
+ p
->offset
) = value
;
10769 /* set/reset a warning */
10770 int tcc_set_warning(TCCState
*s
, const char *warning_name
, int value
)
10775 if (!strcmp(warning_name
, "all")) {
10776 for(i
= 0, p
= warning_defs
; i
< countof(warning_defs
); i
++, p
++) {
10777 if (p
->flags
& WD_ALL
)
10778 *(int *)((uint8_t *)s
+ p
->offset
) = 1;
10782 return set_flag(s
, warning_defs
, countof(warning_defs
),
10783 warning_name
, value
);
10787 static const FlagDef flag_defs
[] = {
10788 { offsetof(TCCState
, char_is_unsigned
), 0, "unsigned-char" },
10789 { offsetof(TCCState
, char_is_unsigned
), FD_INVERT
, "signed-char" },
10790 { offsetof(TCCState
, nocommon
), FD_INVERT
, "common" },
10791 { offsetof(TCCState
, leading_underscore
), 0, "leading-underscore" },
10794 /* set/reset a flag */
10795 int tcc_set_flag(TCCState
*s
, const char *flag_name
, int value
)
10797 return set_flag(s
, flag_defs
, countof(flag_defs
),
10801 #if !defined(LIBTCC)
10803 static int64_t getclock_us(void)
10808 return (tb
.time
* 1000LL + tb
.millitm
) * 1000LL;
10811 gettimeofday(&tv
, NULL
);
10812 return tv
.tv_sec
* 1000000LL + tv
.tv_usec
;
10818 printf("tcc version " TCC_VERSION
" - Tiny C Compiler - Copyright (C) 2001-2006 Fabrice Bellard\n"
10819 "usage: tcc [-v] [-c] [-o outfile] [-Bdir] [-bench] [-Idir] [-Dsym[=val]] [-Usym]\n"
10820 " [-Wwarn] [-g] [-b] [-bt N] [-Ldir] [-llib] [-shared] [-soname name]\n"
10821 " [-static] [infile1 infile2...] [-run infile args...]\n"
10823 "General options:\n"
10824 " -v display current version, increase verbosity\n"
10825 " -c compile only - generate an object file\n"
10826 " -o outfile set output filename\n"
10827 " -Bdir set tcc internal library path\n"
10828 " -bench output compilation statistics\n"
10829 " -run run compiled source\n"
10830 " -fflag set or reset (with 'no-' prefix) 'flag' (see man page)\n"
10831 " -Wwarning set or reset (with 'no-' prefix) 'warning' (see man page)\n"
10832 " -w disable all warnings\n"
10833 "Preprocessor options:\n"
10834 " -E preprocess only\n"
10835 " -Idir add include path 'dir'\n"
10836 " -Dsym[=val] define 'sym' with value 'val'\n"
10837 " -Usym undefine 'sym'\n"
10838 "Linker options:\n"
10839 " -Ldir add library path 'dir'\n"
10840 " -llib link with dynamic or static library 'lib'\n"
10841 " -shared generate a shared library\n"
10842 " -soname set name for shared library to be used at runtime\n"
10843 " -static static linking\n"
10844 " -rdynamic export all global symbols to dynamic linker\n"
10845 " -r generate (relocatable) object file\n"
10846 "Debugger options:\n"
10847 " -g generate runtime debug info\n"
10848 #ifdef CONFIG_TCC_BCHECK
10849 " -b compile with built-in memory and bounds checker (implies -g)\n"
10851 " -bt N show N callers in stack traces\n"
10855 #define TCC_OPTION_HAS_ARG 0x0001
10856 #define TCC_OPTION_NOSEP 0x0002 /* cannot have space before option and arg */
10858 typedef struct TCCOption
{
10887 TCC_OPTION_nostdinc
,
10888 TCC_OPTION_nostdlib
,
10889 TCC_OPTION_print_search_dirs
,
10890 TCC_OPTION_rdynamic
,
10898 static const TCCOption tcc_options
[] = {
10899 { "h", TCC_OPTION_HELP
, 0 },
10900 { "?", TCC_OPTION_HELP
, 0 },
10901 { "I", TCC_OPTION_I
, TCC_OPTION_HAS_ARG
},
10902 { "D", TCC_OPTION_D
, TCC_OPTION_HAS_ARG
},
10903 { "U", TCC_OPTION_U
, TCC_OPTION_HAS_ARG
},
10904 { "L", TCC_OPTION_L
, TCC_OPTION_HAS_ARG
},
10905 { "B", TCC_OPTION_B
, TCC_OPTION_HAS_ARG
},
10906 { "l", TCC_OPTION_l
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10907 { "bench", TCC_OPTION_bench
, 0 },
10908 { "bt", TCC_OPTION_bt
, TCC_OPTION_HAS_ARG
},
10909 #ifdef CONFIG_TCC_BCHECK
10910 { "b", TCC_OPTION_b
, 0 },
10912 { "g", TCC_OPTION_g
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10913 { "c", TCC_OPTION_c
, 0 },
10914 { "static", TCC_OPTION_static
, 0 },
10915 { "shared", TCC_OPTION_shared
, 0 },
10916 { "soname", TCC_OPTION_soname
, TCC_OPTION_HAS_ARG
},
10917 { "o", TCC_OPTION_o
, TCC_OPTION_HAS_ARG
},
10918 { "run", TCC_OPTION_run
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10919 { "rdynamic", TCC_OPTION_rdynamic
, 0 },
10920 { "r", TCC_OPTION_r
, 0 },
10921 { "Wl,", TCC_OPTION_Wl
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10922 { "W", TCC_OPTION_W
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10923 { "O", TCC_OPTION_O
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10924 { "m", TCC_OPTION_m
, TCC_OPTION_HAS_ARG
},
10925 { "f", TCC_OPTION_f
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10926 { "nostdinc", TCC_OPTION_nostdinc
, 0 },
10927 { "nostdlib", TCC_OPTION_nostdlib
, 0 },
10928 { "print-search-dirs", TCC_OPTION_print_search_dirs
, 0 },
10929 { "v", TCC_OPTION_v
, TCC_OPTION_HAS_ARG
| TCC_OPTION_NOSEP
},
10930 { "w", TCC_OPTION_w
, 0 },
10931 { "pipe", TCC_OPTION_pipe
, 0},
10932 { "E", TCC_OPTION_E
, 0},
10936 /* convert 'str' into an array of space separated strings */
10937 static int expand_args(char ***pargv
, const char *str
)
10946 while (is_space(*str
))
10951 while (*str
!= '\0' && !is_space(*str
))
10954 arg
= tcc_malloc(len
+ 1);
10955 memcpy(arg
, s1
, len
);
10957 dynarray_add((void ***)&argv
, &argc
, arg
);
10963 static char **files
;
10964 static int nb_files
, nb_libraries
;
10965 static int multiple_files
;
10966 static int print_search_dirs
;
10967 static int output_type
;
10968 static int reloc_output
;
10969 static const char *outfile
;
10971 int parse_args(TCCState
*s
, int argc
, char **argv
)
10974 const TCCOption
*popt
;
10975 const char *optarg
, *p1
, *r1
;
10979 while (optind
< argc
) {
10981 r
= argv
[optind
++];
10982 if (r
[0] != '-' || r
[1] == '\0') {
10983 /* add a new file */
10984 dynarray_add((void ***)&files
, &nb_files
, r
);
10985 if (!multiple_files
) {
10987 /* argv[0] will be this file */
10991 /* find option in table (match only the first chars */
10992 popt
= tcc_options
;
10996 error("invalid option -- '%s'", r
);
11009 if (popt
->flags
& TCC_OPTION_HAS_ARG
) {
11010 if (*r1
!= '\0' || (popt
->flags
& TCC_OPTION_NOSEP
)) {
11013 if (optind
>= argc
)
11014 error("argument to '%s' is missing", r
);
11015 optarg
= argv
[optind
++];
11023 switch(popt
->index
) {
11024 case TCC_OPTION_HELP
:
11028 if (tcc_add_include_path(s
, optarg
) < 0)
11029 error("too many include paths");
11034 sym
= (char *)optarg
;
11035 value
= strchr(sym
, '=');
11040 tcc_define_symbol(s
, sym
, value
);
11044 tcc_undefine_symbol(s
, optarg
);
11047 tcc_add_library_path(s
, optarg
);
11050 /* set tcc utilities path (mainly for tcc development) */
11051 tcc_lib_path
= optarg
;
11054 dynarray_add((void ***)&files
, &nb_files
, r
);
11057 case TCC_OPTION_bench
:
11060 case TCC_OPTION_bt
:
11061 num_callers
= atoi(optarg
);
11063 #ifdef CONFIG_TCC_BCHECK
11065 do_bounds_check
= 1;
11073 multiple_files
= 1;
11074 output_type
= TCC_OUTPUT_OBJ
;
11076 case TCC_OPTION_static
:
11077 s
->static_link
= 1;
11079 case TCC_OPTION_shared
:
11080 output_type
= TCC_OUTPUT_DLL
;
11082 case TCC_OPTION_soname
:
11083 s
->soname
= optarg
;
11086 multiple_files
= 1;
11090 /* generate a .o merging several output files */
11092 output_type
= TCC_OUTPUT_OBJ
;
11094 case TCC_OPTION_nostdinc
:
11097 case TCC_OPTION_nostdlib
:
11100 case TCC_OPTION_print_search_dirs
:
11101 print_search_dirs
= 1;
11103 case TCC_OPTION_run
:
11107 argc1
= expand_args(&argv1
, optarg
);
11109 parse_args(s
, argc1
, argv1
);
11111 multiple_files
= 0;
11112 output_type
= TCC_OUTPUT_MEMORY
;
11117 if (0 == verbose
++)
11118 printf("tcc version %s\n", TCC_VERSION
);
11119 } while (*optarg
++ == 'v');
11122 if (tcc_set_flag(s
, optarg
, 1) < 0 && s
->warn_unsupported
)
11123 goto unsupported_option
;
11126 if (tcc_set_warning(s
, optarg
, 1) < 0 &&
11127 s
->warn_unsupported
)
11128 goto unsupported_option
;
11133 case TCC_OPTION_rdynamic
:
11136 case TCC_OPTION_Wl
:
11139 if (strstart(optarg
, "-Ttext,", &p
)) {
11140 s
->text_addr
= strtoul(p
, NULL
, 16);
11141 s
->has_text_addr
= 1;
11142 } else if (strstart(optarg
, "--oformat,", &p
)) {
11143 if (strstart(p
, "elf32-", NULL
)) {
11144 s
->output_format
= TCC_OUTPUT_FORMAT_ELF
;
11145 } else if (!strcmp(p
, "binary")) {
11146 s
->output_format
= TCC_OUTPUT_FORMAT_BINARY
;
11148 #ifdef TCC_TARGET_COFF
11149 if (!strcmp(p
, "coff")) {
11150 s
->output_format
= TCC_OUTPUT_FORMAT_COFF
;
11154 error("target %s not found", p
);
11157 error("unsupported linker option '%s'", optarg
);
11162 output_type
= TCC_OUTPUT_PREPROCESS
;
11165 if (s
->warn_unsupported
) {
11166 unsupported_option
:
11167 warning("unsupported option '%s'", r
);
11176 int main(int argc
, char **argv
)
11180 int nb_objfiles
, ret
, optind
;
11181 char objfilename
[1024];
11182 int64_t start_time
= 0;
11185 tcc_lib_path
= w32_tcc_lib_path();
11189 output_type
= TCC_OUTPUT_EXE
;
11191 multiple_files
= 1;
11196 print_search_dirs
= 0;
11199 optind
= parse_args(s
, argc
- 1, argv
+ 1);
11200 if (print_search_dirs
) {
11201 /* enough for Linux kernel */
11202 printf("install: %s/\n", tcc_lib_path
);
11205 if (optind
== 0 || nb_files
== 0) {
11206 if (optind
&& verbose
)
11212 nb_objfiles
= nb_files
- nb_libraries
;
11214 /* if outfile provided without other options, we output an
11216 if (outfile
&& output_type
== TCC_OUTPUT_MEMORY
)
11217 output_type
= TCC_OUTPUT_EXE
;
11219 /* check -c consistency : only single file handled. XXX: checks file type */
11220 if (output_type
== TCC_OUTPUT_OBJ
&& !reloc_output
) {
11221 /* accepts only a single input file */
11222 if (nb_objfiles
!= 1)
11223 error("cannot specify multiple files with -c");
11224 if (nb_libraries
!= 0)
11225 error("cannot specify libraries with -c");
11229 if (output_type
== TCC_OUTPUT_PREPROCESS
) {
11231 s
->outfile
= stdout
;
11233 s
->outfile
= fopen(outfile
, "w");
11235 error("could not open '%s", outfile
);
11237 } else if (output_type
!= TCC_OUTPUT_MEMORY
) {
11239 /* compute default outfile name */
11242 strcmp(files
[0], "-") == 0 ? "a" : tcc_basename(files
[0]);
11243 pstrcpy(objfilename
, sizeof(objfilename
), name
);
11244 ext
= tcc_fileextension(objfilename
);
11245 #ifdef TCC_TARGET_PE
11246 if (output_type
== TCC_OUTPUT_DLL
)
11247 strcpy(ext
, ".dll");
11249 if (output_type
== TCC_OUTPUT_EXE
)
11250 strcpy(ext
, ".exe");
11253 if (output_type
== TCC_OUTPUT_OBJ
&& !reloc_output
&& *ext
)
11256 pstrcpy(objfilename
, sizeof(objfilename
), "a.out");
11257 outfile
= objfilename
;
11262 start_time
= getclock_us();
11265 tcc_set_output_type(s
, output_type
);
11267 /* compile or add each files or library */
11268 for(i
= 0; i
< nb_files
&& ret
== 0; i
++) {
11269 const char *filename
;
11271 filename
= files
[i
];
11272 if (output_type
== TCC_OUTPUT_PREPROCESS
) {
11273 if (tcc_add_file_internal(s
, filename
,
11274 AFF_PRINT_ERROR
| AFF_PREPROCESS
) < 0)
11276 } else if (filename
[0] == '-' && filename
[1]) {
11277 if (tcc_add_library(s
, filename
+ 2) < 0)
11278 error("cannot find %s", filename
);
11281 printf("-> %s\n", filename
);
11282 if (tcc_add_file(s
, filename
) < 0)
11287 /* free all files */
11295 total_time
= (double)(getclock_us() - start_time
) / 1000000.0;
11296 if (total_time
< 0.001)
11297 total_time
= 0.001;
11298 if (total_bytes
< 1)
11300 printf("%d idents, %d lines, %d bytes, %0.3f s, %d lines/s, %0.1f MB/s\n",
11301 tok_ident
- TOK_IDENT
, total_lines
, total_bytes
,
11302 total_time
, (int)(total_lines
/ total_time
),
11303 total_bytes
/ total_time
/ 1000000.0);
11306 if (s
->output_type
== TCC_OUTPUT_PREPROCESS
) {
11308 fclose(s
->outfile
);
11309 } else if (s
->output_type
== TCC_OUTPUT_MEMORY
) {
11310 ret
= tcc_run(s
, argc
- optind
, argv
+ optind
);
11312 ret
= tcc_output_file(s
, outfile
) ? 1 : 0;
11314 /* XXX: cannot do it with bound checking because of the malloc hooks */
11315 if (!do_bounds_check
)
11320 printf("memory: %d bytes, max = %d bytes\n", mem_cur_size
, mem_max_size
);