-
Notifications
You must be signed in to change notification settings - Fork 2
/
tcc.h
1671 lines (1478 loc) · 54.9 KB
/
tcc.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* TCC - Tiny C Compiler
*
* Copyright (c) 2001-2004 Fabrice Bellard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _TCC_H
#define _TCC_H
#define _GNU_SOURCE
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <errno.h>
#include <math.h>
#include <fcntl.h>
#include <setjmp.h>
#include <time.h>
#ifndef _WIN32
# include <unistd.h>
# include <sys/time.h>
# ifndef CONFIG_TCC_STATIC
# include <dlfcn.h>
# endif
/* XXX: need to define this to use them in non ISOC99 context */
extern float strtof (const char *__nptr, char **__endptr);
extern long double strtold (const char *__nptr, char **__endptr);
#endif
#ifdef _WIN32
# include <windows.h>
# include <io.h> /* open, close etc. */
# include <direct.h> /* getcwd */
# ifdef __GNUC__
# include <stdint.h>
# endif
# define inline __inline
# define snprintf _snprintf
# define vsnprintf _vsnprintf
# ifndef __GNUC__
# define strtold (long double)strtod
# define strtof (float)strtod
# define strtoll _strtoi64
# define strtoull _strtoui64
# endif
# ifdef LIBTCC_AS_DLL
# define LIBTCCAPI __declspec(dllexport)
# define PUB_FUNC LIBTCCAPI
# endif
# define inp next_inp /* inp is an intrinsic on msvc/mingw */
# ifdef _MSC_VER
# pragma warning (disable : 4244) // conversion from 'uint64_t' to 'int', possible loss of data
# pragma warning (disable : 4267) // conversion from 'size_t' to 'int', possible loss of data
# pragma warning (disable : 4996) // The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name
# pragma warning (disable : 4018) // signed/unsigned mismatch
# pragma warning (disable : 4146) // unary minus operator applied to unsigned type, result still unsigned
# define ssize_t intptr_t
# endif
# undef CONFIG_TCC_STATIC
#endif
#ifndef O_BINARY
# define O_BINARY 0
#endif
#ifndef offsetof
#define offsetof(type, field) ((size_t) &((type *)0)->field)
#endif
#ifndef countof
#define countof(tab) (sizeof(tab) / sizeof((tab)[0]))
#endif
#ifdef _MSC_VER
# define NORETURN __declspec(noreturn)
# define ALIGNED(x) __declspec(align(x))
#else
# define NORETURN __attribute__((noreturn))
# define ALIGNED(x) __attribute__((aligned(x)))
#endif
#ifdef _WIN32
# define IS_DIRSEP(c) (c == '/' || c == '\\')
# define IS_ABSPATH(p) (IS_DIRSEP(p[0]) || (p[0] && p[1] == ':' && IS_DIRSEP(p[2])))
# define PATHCMP stricmp
#else
# define IS_DIRSEP(c) (c == '/')
# define IS_ABSPATH(p) IS_DIRSEP(p[0])
# define PATHCMP strcmp
#endif
/* -------------------------------------------- */
/* parser debug */
/* #define PARSE_DEBUG */
/* preprocessor debug */
/* #define PP_DEBUG */
/* include file debug */
/* #define INC_DEBUG */
/* memory leak debug */
/* #define MEM_DEBUG */
/* assembler debug */
/* #define ASM_DEBUG */
/* target selection */
/* #define TCC_TARGET_I386 *//* i386 code generator */
/* #define TCC_TARGET_X86_64 *//* x86-64 code generator */
/* #define TCC_TARGET_ARM *//* ARMv4 code generator */
/* #define TCC_TARGET_ARM64 *//* ARMv8 code generator */
/* #define TCC_TARGET_C67 *//* TMS320C67xx code generator */
/* default target is I386 */
#if !defined(TCC_TARGET_I386) && !defined(TCC_TARGET_ARM) && \
!defined(TCC_TARGET_ARM64) && !defined(TCC_TARGET_C67) && \
!defined(TCC_TARGET_X86_64) && !defined(TCC_TARGET_XTENSA) && \
!defined(TCC_TARGET_JAVASCRIPT)
# if defined __x86_64__ || defined _AMD64_
# define TCC_TARGET_X86_64
# elif defined __arm__
# define TCC_TARGET_ARM
# define TCC_ARM_EABI
# define TCC_ARM_HARDFLOAT
# elif defined __aarch64__
# define TCC_TARGET_ARM64
# else
# define TCC_TARGET_I386
# endif
# ifdef _WIN32
# define TCC_TARGET_PE 1
# endif
#endif
/* only native compiler supports -run */
#if defined _WIN32 == defined TCC_TARGET_PE
# if (defined __i386__ || defined _X86_) && defined TCC_TARGET_I386
# define TCC_IS_NATIVE
# elif (defined __x86_64__ || defined _AMD64_) && defined TCC_TARGET_X86_64
# define TCC_IS_NATIVE
# elif defined __arm__ && defined TCC_TARGET_ARM
# define TCC_IS_NATIVE
# elif defined __aarch64__ && defined TCC_TARGET_ARM64
# define TCC_IS_NATIVE
# endif
#endif
#if defined TCC_IS_NATIVE && !defined CONFIG_TCCBOOT
# define CONFIG_TCC_BACKTRACE
# if (defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64) \
&& !defined TCC_UCLIBC && !defined TCC_MUSL
# define CONFIG_TCC_BCHECK /* enable bound checking code */
# endif
#endif
/* ------------ path configuration ------------ */
#ifndef CONFIG_SYSROOT
# define CONFIG_SYSROOT ""
#endif
#ifndef CONFIG_TCCDIR
# define CONFIG_TCCDIR "/usr/local/lib/tcc"
#endif
#ifndef CONFIG_LDDIR
# define CONFIG_LDDIR "lib"
#endif
#ifdef CONFIG_TRIPLET
# define USE_TRIPLET(s) s "/" CONFIG_TRIPLET
# define ALSO_TRIPLET(s) USE_TRIPLET(s) ":" s
#else
# define USE_TRIPLET(s) s
# define ALSO_TRIPLET(s) s
#endif
/* path to find crt1.o, crti.o and crtn.o */
#ifndef CONFIG_TCC_CRTPREFIX
# define CONFIG_TCC_CRTPREFIX USE_TRIPLET(CONFIG_SYSROOT "/usr/" CONFIG_LDDIR)
#endif
/* Below: {B} is substituted by CONFIG_TCCDIR (rsp. -B option) */
/* system include paths */
#ifndef CONFIG_TCC_SYSINCLUDEPATHS
# ifdef TCC_TARGET_PE
# define CONFIG_TCC_SYSINCLUDEPATHS "{B}/include;{B}/include/winapi"
# else
# define CONFIG_TCC_SYSINCLUDEPATHS \
"{B}/include" \
":" ALSO_TRIPLET(CONFIG_SYSROOT "/usr/local/include") \
":" ALSO_TRIPLET(CONFIG_SYSROOT "/usr/include")
# endif
#endif
/* library search paths */
#ifndef CONFIG_TCC_LIBPATHS
# ifdef TCC_TARGET_PE
# define CONFIG_TCC_LIBPATHS "{B}/lib"
# else
# define CONFIG_TCC_LIBPATHS \
ALSO_TRIPLET(CONFIG_SYSROOT "/usr/" CONFIG_LDDIR) \
":" ALSO_TRIPLET(CONFIG_SYSROOT "/" CONFIG_LDDIR) \
":" ALSO_TRIPLET(CONFIG_SYSROOT "/usr/local/" CONFIG_LDDIR)
# endif
#endif
/* name of ELF interpreter */
#ifndef CONFIG_TCC_ELFINTERP
# if defined __FreeBSD__
# define CONFIG_TCC_ELFINTERP "/libexec/ld-elf.so.1"
# elif defined __FreeBSD_kernel__
# if defined(TCC_TARGET_X86_64)
# define CONFIG_TCC_ELFINTERP "/lib/ld-kfreebsd-x86-64.so.1"
# else
# define CONFIG_TCC_ELFINTERP "/lib/ld.so.1"
# endif
# elif defined __DragonFly__
# define CONFIG_TCC_ELFINTERP "/usr/libexec/ld-elf.so.2"
# elif defined __NetBSD__
# define CONFIG_TCC_ELFINTERP "/usr/libexec/ld.elf_so"
# elif defined __GNU__
# define CONFIG_TCC_ELFINTERP "/lib/ld.so"
# elif defined(TCC_TARGET_PE)
# define CONFIG_TCC_ELFINTERP "-"
# elif defined(TCC_UCLIBC)
# define CONFIG_TCC_ELFINTERP "/lib/ld-uClibc.so.0" /* is there a uClibc for x86_64 ? */
# elif defined TCC_TARGET_ARM64
# if defined(TCC_MUSL)
# define CONFIG_TCC_ELFINTERP "/lib/ld-musl-aarch64.so.1"
# else
# define CONFIG_TCC_ELFINTERP "/lib/ld-linux-aarch64.so.1"
# endif
# elif defined(TCC_TARGET_X86_64)
# if defined(TCC_MUSL)
# define CONFIG_TCC_ELFINTERP "/lib/ld-musl-x86_64.so.1"
# else
# define CONFIG_TCC_ELFINTERP "/lib64/ld-linux-x86-64.so.2"
# endif
# elif !defined(TCC_ARM_EABI)
# if defined(TCC_MUSL)
# define CONFIG_TCC_ELFINTERP "/lib/ld-musl-arm.so.1"
# else
# define CONFIG_TCC_ELFINTERP "/lib/ld-linux.so.2"
# endif
# endif
#endif
/* var elf_interp dans *-gen.c */
#ifdef CONFIG_TCC_ELFINTERP
# define DEFAULT_ELFINTERP(s) CONFIG_TCC_ELFINTERP
#else
# define DEFAULT_ELFINTERP(s) default_elfinterp(s)
#endif
/* (target specific) libtcc1.a */
#ifndef TCC_LIBTCC1
# define TCC_LIBTCC1 "libtcc1.a"
#endif
/* library to use with CONFIG_USE_LIBGCC instead of libtcc1.a */
#if defined CONFIG_USE_LIBGCC && !defined TCC_LIBGCC
#define TCC_LIBGCC USE_TRIPLET(CONFIG_SYSROOT "/" CONFIG_LDDIR) "/libgcc_s.so.1"
#endif
#ifdef TCC_TARGET_PE
#define PATHSEP ';'
#else
#define PATHSEP ':'
#endif
/* -------------------------------------------- */
#include "libtcc.h"
#include "elf.h"
#include "stab.h"
/* -------------------------------------------- */
#ifndef PUB_FUNC /* functions used by tcc.c but not in libtcc.h */
# define PUB_FUNC
#endif
#ifndef ONE_SOURCE
# define ONE_SOURCE 1
#endif
#if ONE_SOURCE
#define ST_INLN static inline
#define ST_FUNC static
#define ST_DATA static
#else
#define ST_INLN
#define ST_FUNC
#define ST_DATA extern
#endif
#ifdef TCC_PROFILE /* profile all functions */
# define static
#endif
/* -------------------------------------------- */
/* include the target specific definitions */
#define TARGET_DEFS_ONLY
#ifdef TCC_TARGET_I386
# include "i386-gen.c"
# include "i386-link.c"
#endif
#ifdef TCC_TARGET_X86_64
# include "x86_64-gen.c"
# include "x86_64-link.c"
#endif
#ifdef TCC_TARGET_ARM
# include "arm-gen.c"
# include "arm-link.c"
# include "arm-asm.c"
#endif
#ifdef TCC_TARGET_ARM64
# include "arm64-gen.c"
# include "arm64-link.c"
#endif
#ifdef TCC_TARGET_C67
# define TCC_TARGET_COFF
# include "coff.h"
# include "c67-gen.c"
# include "c67-link.c"
#endif
#ifdef TCC_TARGET_XTENSA
#include "xtensa-gen.c"
#include "xtensa-link.c"
#endif
#ifdef TCC_TARGET_JAVASCRIPT
#include "javascript-gen.c"
#include "javascript-link.c"
#endif
#undef TARGET_DEFS_ONLY
/* -------------------------------------------- */
#if PTR_SIZE == 8
# define ELFCLASSW ELFCLASS64
# define ElfW(type) Elf##64##_##type
# define ELFW(type) ELF##64##_##type
# define ElfW_Rel ElfW(Rela)
# define SHT_RELX SHT_RELA
# define REL_SECTION_FMT ".rela%s"
#else
# define ELFCLASSW ELFCLASS32
# define ElfW(type) Elf##32##_##type
# define ELFW(type) ELF##32##_##type
# define ElfW_Rel ElfW(Rel)
# define SHT_RELX SHT_REL
# define REL_SECTION_FMT ".rel%s"
#endif
/* target address type */
#define addr_t ElfW(Addr)
#if PTR_SIZE == 8 && !defined TCC_TARGET_PE
# define LONG_SIZE 8
#else
# define LONG_SIZE 4
#endif
/* -------------------------------------------- */
#define INCLUDE_STACK_SIZE 32
#define IFDEF_STACK_SIZE 64
#define VSTACK_SIZE 256
#define STRING_MAX_SIZE 1024
#define TOKSTR_MAX_SIZE 256
#define PACK_STACK_SIZE 8
#define TOK_HASH_SIZE 16384 /* must be a power of two */
#define TOK_ALLOC_INCR 512 /* must be a power of two */
#define TOK_MAX_SIZE 4 /* token max size in int unit when stored in string */
/* token symbol management */
typedef struct TokenSym {
struct TokenSym *hash_next;
struct Sym *sym_define; /* direct pointer to define */
struct Sym *sym_label; /* direct pointer to label */
struct Sym *sym_struct; /* direct pointer to structure */
struct Sym *sym_identifier; /* direct pointer to identifier */
int tok; /* token number */
int len;
char str[1];
} TokenSym;
#ifdef TCC_TARGET_PE
typedef unsigned short nwchar_t;
#else
typedef int nwchar_t;
#endif
typedef struct CString {
int size; /* size in bytes */
void *data; /* either 'char *' or 'nwchar_t *' */
int size_allocated;
} CString;
/* type definition */
typedef struct CType {
int t;
struct Sym *ref;
} CType;
/* constant value */
typedef union CValue {
long double ld;
double d;
float f;
uint64_t i;
struct {
int size;
const void *data;
} str;
int tab[LDOUBLE_SIZE/4];
} CValue;
/* value on stack */
typedef struct SValue {
CType type; /* type */
unsigned short r; /* register + flags */
unsigned short r2; /* second register, used for 'long long'
type. If not used, set to VT_CONST */
CValue c; /* constant, if VT_CONST */
struct Sym *sym; /* symbol, if (VT_SYM | VT_CONST), or if
result of unary() for an identifier. */
} SValue;
/* symbol attributes */
struct SymAttr {
unsigned short
aligned : 5, /* alignment as log2+1 (0 == unspecified) */
packed : 1,
weak : 1,
visibility : 2,
dllexport : 1,
dllimport : 1,
unused : 5;
};
/* function attributes or temporary attributes for parsing */
struct FuncAttr {
unsigned
func_call : 3, /* calling convention (0..5), see below */
func_type : 2, /* FUNC_OLD/NEW/ELLIPSIS */
func_body : 1, /* body was defined */
func_args : 8; /* PE __stdcall args */
};
/* GNUC attribute definition */
typedef struct AttributeDef {
struct SymAttr a;
struct FuncAttr f;
struct Section *section;
int alias_target; /* token */
int asm_label; /* associated asm label */
char attr_mode; /* __attribute__((__mode__(...))) */
} AttributeDef;
/* symbol management */
typedef struct Sym {
int v; /* symbol token */
unsigned short r; /* associated register or VT_CONST/VT_LOCAL and LVAL type */
struct SymAttr a; /* symbol attributes */
union {
struct {
int c; /* associated number or Elf symbol index */
union {
int sym_scope; /* scope level for locals */
int jnext; /* next jump label */
struct FuncAttr f; /* function attributes */
int auxtype; /* bitfield access type */
};
};
long long enum_val; /* enum constant if IS_ENUM_VAL */
int *d; /* define token stream */
};
CType type; /* associated type */
union {
struct Sym *next; /* next related symbol (for fields and anoms) */
int asm_label; /* associated asm label */
};
struct Sym *prev; /* prev symbol in stack */
struct Sym *prev_tok; /* previous symbol for this token */
} Sym;
/* section definition */
/* XXX: use directly ELF structure for parameters ? */
/* special flag to indicate that the section should not be linked to
the other ones */
#define SHF_PRIVATE 0x80000000
/* special flag, too */
#define SECTION_ABS ((void *)1)
typedef struct Section {
unsigned long data_offset; /* current data offset */
unsigned char *data; /* section data */
unsigned long data_allocated; /* used for realloc() handling */
int sh_name; /* elf section name (only used during output) */
int sh_num; /* elf section number */
int sh_type; /* elf section type */
int sh_flags; /* elf section flags */
int sh_info; /* elf section info */
int sh_addralign; /* elf section alignment */
int sh_entsize; /* elf entry size */
unsigned long sh_size; /* section size (only used during output) */
addr_t sh_addr; /* address at which the section is relocated */
unsigned long sh_offset; /* file offset */
int nb_hashed_syms; /* used to resize the hash table */
struct Section *link; /* link to another section */
struct Section *reloc; /* corresponding section for relocation, if any */
struct Section *hash; /* hash table for symbols */
struct Section *prev; /* previous section on section stack */
char name[1]; /* section name */
} Section;
typedef struct DLLReference {
int level;
void *handle;
char name[1];
} DLLReference;
/* -------------------------------------------------- */
#define SYM_STRUCT 0x40000000 /* struct/union/enum symbol space */
#define SYM_FIELD 0x20000000 /* struct/union field symbol space */
#define SYM_FIRST_ANOM 0x10000000 /* first anonymous sym */
/* stored in 'Sym->f.func_type' field */
#define FUNC_NEW 1 /* ansi function prototype */
#define FUNC_OLD 2 /* old function prototype */
#define FUNC_ELLIPSIS 3 /* ansi function prototype with ... */
/* stored in 'Sym->f.func_call' field */
#define FUNC_CDECL 0 /* standard c call */
#define FUNC_STDCALL 1 /* pascal c call */
#define FUNC_FASTCALL1 2 /* first param in %eax */
#define FUNC_FASTCALL2 3 /* first parameters in %eax, %edx */
#define FUNC_FASTCALL3 4 /* first parameter in %eax, %edx, %ecx */
#define FUNC_FASTCALLW 5 /* first parameter in %ecx, %edx */
/* field 'Sym.t' for macros */
#define MACRO_OBJ 0 /* object like macro */
#define MACRO_FUNC 1 /* function like macro */
/* field 'Sym.r' for C labels */
#define LABEL_DEFINED 0 /* label is defined */
#define LABEL_FORWARD 1 /* label is forward defined */
#define LABEL_DECLARED 2 /* label is declared but never used */
/* type_decl() types */
#define TYPE_ABSTRACT 1 /* type without variable */
#define TYPE_DIRECT 2 /* type with variable */
#define IO_BUF_SIZE 8192
typedef struct BufferedFile {
uint8_t *buf_ptr;
uint8_t *buf_end;
int fd;
struct BufferedFile *prev;
int line_num; /* current line number - here to simplify code */
int line_ref; /* tcc -E: last printed line */
int ifndef_macro; /* #ifndef macro / #endif search */
int ifndef_macro_saved; /* saved ifndef_macro */
int *ifdef_stack_ptr; /* ifdef_stack value at the start of the file */
int include_next_index; /* next search path */
char filename[1024]; /* filename */
char *true_filename; /* filename not modified by # line directive */
unsigned char unget[4];
unsigned char buffer[1]; /* extra size for CH_EOB char */
} BufferedFile;
#define CH_EOB '\\' /* end of buffer or '\0' char in file */
#define CH_EOF (-1) /* end of file */
/* used to record tokens */
typedef struct TokenString {
int *str;
int len;
int lastlen;
int allocated_len;
int last_line_num;
int save_line_num;
/* used to chain token-strings with begin/end_macro() */
struct TokenString *prev;
const int *prev_ptr;
char alloc;
} TokenString;
/* inline functions */
typedef struct InlineFunc {
TokenString *func_str;
Sym *sym;
char filename[1];
} InlineFunc;
/* include file cache, used to find files faster and also to eliminate
inclusion if the include file is protected by #ifndef ... #endif */
typedef struct CachedInclude {
int ifndef_macro;
int once;
int hash_next; /* -1 if none */
char filename[1]; /* path specified in #include */
} CachedInclude;
#define CACHED_INCLUDES_HASH_SIZE 32
#ifdef CONFIG_TCC_ASM
typedef struct ExprValue {
uint64_t v;
Sym *sym;
int pcrel;
} ExprValue;
#define MAX_ASM_OPERANDS 30
typedef struct ASMOperand {
int id; /* GCC 3 optional identifier (0 if number only supported */
char *constraint;
char asm_str[16]; /* computed asm string for operand */
SValue *vt; /* C value of the expression */
int ref_index; /* if >= 0, gives reference to a output constraint */
int input_index; /* if >= 0, gives reference to an input constraint */
int priority; /* priority, used to assign registers */
int reg; /* if >= 0, register number used for this operand */
int is_llong; /* true if double register value */
int is_memory; /* true if memory operand */
int is_rw; /* for '+' modifier */
} ASMOperand;
#endif
/* extra symbol attributes (not in symbol table) */
struct sym_attr {
unsigned got_offset;
unsigned plt_offset;
int plt_sym;
int dyn_index;
#ifdef TCC_TARGET_ARM
unsigned char plt_thumb_stub:1;
#endif
};
struct TCCState {
int verbose; /* if true, display some information during compilation */
int nostdinc; /* if true, no standard headers are added */
int nostdlib; /* if true, no standard libraries are added */
int nocommon; /* if true, do not use common symbols for .bss data */
int static_link; /* if true, static linking is performed */
int rdynamic; /* if true, all symbols are exported */
int symbolic; /* if true, resolve symbols in the current module first */
int alacarte_link; /* if true, only link in referenced objects from archive */
char *tcc_lib_path; /* CONFIG_TCCDIR or -B option */
char *soname; /* as specified on the command line (-soname) */
char *rpath; /* as specified on the command line (-Wl,-rpath=) */
int enable_new_dtags; /* ditto, (-Wl,--enable-new-dtags) */
/* output type, see TCC_OUTPUT_XXX */
int output_type;
/* output format, see TCC_OUTPUT_FORMAT_xxx */
int output_format;
/* C language options */
int char_is_unsigned;
int leading_underscore;
int ms_extensions; /* allow nested named struct w/o identifier behave like unnamed */
int dollars_in_identifiers; /* allows '$' char in identifiers */
int ms_bitfields; /* if true, emulate MS algorithm for aligning bitfields */
/* warning switches */
int warn_write_strings;
int warn_unsupported;
int warn_error;
int warn_none;
int warn_implicit_function_declaration;
int warn_gcc_compat;
/* compile with debug symbol (and use them if error during execution) */
int do_debug;
#ifdef CONFIG_TCC_BCHECK
/* compile with built-in memory and bounds checker */
int do_bounds_check;
#endif
#ifdef TCC_TARGET_ARM
enum float_abi float_abi; /* float ABI of the generated code*/
#endif
int run_test; /* nth test to run with -dt -run */
addr_t text_addr; /* address of text section */
int has_text_addr;
unsigned section_align; /* section alignment */
char *init_symbol; /* symbols to call at load-time (not used currently) */
char *fini_symbol; /* symbols to call at unload-time (not used currently) */
#ifdef TCC_TARGET_I386
int seg_size; /* 32. Can be 16 with i386 assembler (.code16) */
#endif
#ifdef TCC_TARGET_X86_64
int nosse; /* For -mno-sse support. */
#endif
/* array of all loaded dlls (including those referenced by loaded dlls) */
DLLReference **loaded_dlls;
int nb_loaded_dlls;
/* include paths */
char **include_paths;
int nb_include_paths;
char **sysinclude_paths;
int nb_sysinclude_paths;
/* library paths */
char **library_paths;
int nb_library_paths;
/* crt?.o object path */
char **crt_paths;
int nb_crt_paths;
/* -include files */
char **cmd_include_files;
int nb_cmd_include_files;
/* error handling */
void *error_opaque;
void (*error_func)(void *opaque, const char *msg);
int error_set_jmp_enabled;
jmp_buf error_jmp_buf;
int nb_errors;
/* output file for preprocessing (-E) */
FILE *ppfp;
enum {
LINE_MACRO_OUTPUT_FORMAT_GCC,
LINE_MACRO_OUTPUT_FORMAT_NONE,
LINE_MACRO_OUTPUT_FORMAT_STD,
LINE_MACRO_OUTPUT_FORMAT_P10 = 11
} Pflag; /* -P switch */
char dflag; /* -dX value */
/* for -MD/-MF: collected dependencies for this compilation */
char **target_deps;
int nb_target_deps;
/* compilation */
BufferedFile *include_stack[INCLUDE_STACK_SIZE];
BufferedFile **include_stack_ptr;
int ifdef_stack[IFDEF_STACK_SIZE];
int *ifdef_stack_ptr;
/* included files enclosed with #ifndef MACRO */
int cached_includes_hash[CACHED_INCLUDES_HASH_SIZE];
CachedInclude **cached_includes;
int nb_cached_includes;
/* #pragma pack stack */
int pack_stack[PACK_STACK_SIZE];
int *pack_stack_ptr;
char **pragma_libs;
int nb_pragma_libs;
/* inline functions are stored as token lists and compiled last
only if referenced */
struct InlineFunc **inline_fns;
int nb_inline_fns;
/* sections */
Section **sections;
int nb_sections; /* number of sections, including first dummy section */
Section **priv_sections;
int nb_priv_sections; /* number of private sections */
/* got & plt handling */
Section *got;
Section *plt;
/* temporary dynamic symbol sections (for dll loading) */
Section *dynsymtab_section;
/* exported dynamic symbol section */
Section *dynsym;
/* copy of the global symtab_section variable */
Section *symtab;
/* extra attributes (eg. GOT/PLT value) for symtab symbols */
struct sym_attr *sym_attrs;
int nb_sym_attrs;
/* tiny assembler state */
Sym *asm_labels;
#ifdef TCC_TARGET_PE
/* PE info */
int pe_subsystem;
unsigned pe_characteristics;
unsigned pe_file_align;
unsigned pe_stack_size;
# ifdef TCC_TARGET_X86_64
Section *uw_pdata;
int uw_sym;
unsigned uw_offs;
# endif
#endif
#ifdef TCC_IS_NATIVE
const char *runtime_main;
void **runtime_mem;
int nb_runtime_mem;
#endif
/* used by main and tcc_parse_args only */
struct filespec **files; /* files seen on command line */
int nb_files; /* number thereof */
int nb_libraries; /* number of libs thereof */
int filetype;
char *outfile; /* output filename */
int option_r; /* option -r */
int do_bench; /* option -bench */
int gen_deps; /* option -MD */
char *deps_outfile; /* option -MF */
int option_pthread; /* -pthread option */
int argc;
char **argv;
};
struct filespec {
char type;
char alacarte;
char name[1];
};
/* The current value can be: */
#define VT_VALMASK 0x003f /* mask for value location, register or: */
#define VT_CONST 0x0030 /* constant in vc (must be first non register value) */
#define VT_LLOCAL 0x0031 /* lvalue, offset on stack */
#define VT_LOCAL 0x0032 /* offset on stack */
#define VT_CMP 0x0033 /* the value is stored in processor flags (in vc) */
#define VT_JMP 0x0034 /* value is the consequence of jmp true (even) */
#define VT_JMPI 0x0035 /* value is the consequence of jmp false (odd) */
#define VT_LVAL 0x0100 /* var is an lvalue */
#define VT_SYM 0x0200 /* a symbol value is added */
#define VT_MUSTCAST 0x0400 /* value must be casted to be correct (used for
char/short stored in integer registers) */
#define VT_MUSTBOUND 0x0800 /* bound checking must be done before
dereferencing value */
#define VT_BOUNDED 0x8000 /* value is bounded. The address of the
bounding function call point is in vc */
#define VT_LVAL_BYTE 0x1000 /* lvalue is a byte */
#define VT_LVAL_SHORT 0x2000 /* lvalue is a short */
#define VT_LVAL_UNSIGNED 0x4000 /* lvalue is unsigned */
#define VT_LVAL_TYPE (VT_LVAL_BYTE | VT_LVAL_SHORT | VT_LVAL_UNSIGNED)
/* types */
#define VT_BTYPE 0x000f /* mask for basic type */
#define VT_VOID 0 /* void type */
#define VT_BYTE 1 /* signed byte type */
#define VT_SHORT 2 /* short type */
#define VT_INT 3 /* integer type */
#define VT_LLONG 4 /* 64 bit integer */
#define VT_PTR 5 /* pointer */
#define VT_FUNC 6 /* function type */
#define VT_STRUCT 7 /* struct/union definition */
#define VT_FLOAT 8 /* IEEE float */
#define VT_DOUBLE 9 /* IEEE double */
#define VT_LDOUBLE 10 /* IEEE long double */
#define VT_BOOL 11 /* ISOC99 boolean type */
#define VT_QLONG 13 /* 128-bit integer. Only used for x86-64 ABI */
#define VT_QFLOAT 14 /* 128-bit float. Only used for x86-64 ABI */
#define VT_UNSIGNED 0x0010 /* unsigned type */
#define VT_DEFSIGN 0x0020 /* explicitly signed or unsigned */
#define VT_ARRAY 0x0040 /* array type (also has VT_PTR) */
#define VT_BITFIELD 0x0080 /* bitfield modifier */
#define VT_CONSTANT 0x0100 /* const modifier */
#define VT_VOLATILE 0x0200 /* volatile modifier */
#define VT_VLA 0x0400 /* VLA type (also has VT_PTR and VT_ARRAY) */
#define VT_LONG 0x0800 /* long type (also has VT_INT rsp. VT_LLONG) */
/* storage */
#define VT_EXTERN 0x00001000 /* extern definition */
#define VT_STATIC 0x00002000 /* static variable */
#define VT_TYPEDEF 0x00004000 /* typedef definition */
#define VT_INLINE 0x00008000 /* inline definition */
/* currently unused: 0x000[1248]0000 */
#define VT_STRUCT_SHIFT 20 /* shift for bitfield shift values (32 - 2*6) */
#define VT_STRUCT_MASK (((1 << (6+6)) - 1) << VT_STRUCT_SHIFT | VT_BITFIELD)
#define BIT_POS(t) (((t) >> VT_STRUCT_SHIFT) & 0x3f)
#define BIT_SIZE(t) (((t) >> (VT_STRUCT_SHIFT + 6)) & 0x3f)
#define VT_UNION (1 << VT_STRUCT_SHIFT | VT_STRUCT)
#define VT_ENUM (2 << VT_STRUCT_SHIFT) /* integral type is an enum really */
#define VT_ENUM_VAL (3 << VT_STRUCT_SHIFT) /* integral type is an enum constant really */
#define IS_ENUM(t) ((t & VT_STRUCT_MASK) == VT_ENUM)
#define IS_ENUM_VAL(t) ((t & VT_STRUCT_MASK) == VT_ENUM_VAL)
#define IS_UNION(t) ((t & (VT_STRUCT_MASK|VT_BTYPE)) == VT_UNION)
/* type mask (except storage) */
#define VT_STORAGE (VT_EXTERN | VT_STATIC | VT_TYPEDEF | VT_INLINE)
#define VT_TYPE (~(VT_STORAGE|VT_STRUCT_MASK))
/* token values */
/* warning: the following compare tokens depend on i386 asm code */
#define TOK_ULT 0x92
#define TOK_UGE 0x93
#define TOK_EQ 0x94
#define TOK_NE 0x95
#define TOK_ULE 0x96
#define TOK_UGT 0x97
#define TOK_Nset 0x98
#define TOK_Nclear 0x99
#define TOK_LT 0x9c
#define TOK_GE 0x9d
#define TOK_LE 0x9e
#define TOK_GT 0x9f
#define TOK_LAND 0xa0
#define TOK_LOR 0xa1
#define TOK_DEC 0xa2
#define TOK_MID 0xa3 /* inc/dec, to void constant */
#define TOK_INC 0xa4
#define TOK_UDIV 0xb0 /* unsigned division */
#define TOK_UMOD 0xb1 /* unsigned modulo */
#define TOK_PDIV 0xb2 /* fast division with undefined rounding for pointers */
/* tokens that carry values (in additional token string space / tokc) --> */
#define TOK_CCHAR 0xb3 /* char constant in tokc */
#define TOK_LCHAR 0xb4
#define TOK_CINT 0xb5 /* number in tokc */
#define TOK_CUINT 0xb6 /* unsigned int constant */
#define TOK_CLLONG 0xb7 /* long long constant */
#define TOK_CULLONG 0xb8 /* unsigned long long constant */
#define TOK_STR 0xb9 /* pointer to string in tokc */
#define TOK_LSTR 0xba
#define TOK_CFLOAT 0xbb /* float constant */
#define TOK_CDOUBLE 0xbc /* double constant */
#define TOK_CLDOUBLE 0xbd /* long double constant */
#define TOK_PPNUM 0xbe /* preprocessor number */
#define TOK_PPSTR 0xbf /* preprocessor string */
#define TOK_LINENUM 0xc0 /* line number info */
#define TOK_TWODOTS 0xa8 /* C++ token ? */
/* <-- */
#define TOK_UMULL 0xc2 /* unsigned 32x32 -> 64 mul */
#define TOK_ADDC1 0xc3 /* add with carry generation */
#define TOK_ADDC2 0xc4 /* add with carry use */
#define TOK_SUBC1 0xc5 /* add with carry generation */
#define TOK_SUBC2 0xc6 /* add with carry use */
#define TOK_ARROW 0xc7
#define TOK_DOTS 0xc8 /* three dots */
#define TOK_SHR 0xc9 /* unsigned shift right */
#define TOK_TWOSHARPS 0xca /* ## preprocessing token */
#define TOK_PLCHLDR 0xcb /* placeholder token as defined in C99 */
#define TOK_NOSUBST 0xcc /* means following token has already been pp'd */
#define TOK_PPJOIN 0xcd /* A '##' in the right position to mean pasting */
#define TOK_CLONG 0xce /* long constant */
#define TOK_CULONG 0xcf /* unsigned long constant */
#define TOK_SHL 0x01 /* shift left */
#define TOK_SAR 0x02 /* signed shift right */
/* assignment operators : normal operator or 0x80 */
#define TOK_A_MOD 0xa5
#define TOK_A_AND 0xa6
#define TOK_A_MUL 0xaa
#define TOK_A_ADD 0xab
#define TOK_A_SUB 0xad
#define TOK_A_DIV 0xaf
#define TOK_A_XOR 0xde
#define TOK_A_OR 0xfc
#define TOK_A_SHL 0x81
#define TOK_A_SAR 0x82
#define TOK_EOF (-1) /* end of file */
#define TOK_LINEFEED 10 /* line feed */
/* all identifiers and strings have token above that */