forked from TinyCC/tinycc
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathlibtcc.c
2263 lines (1999 loc) · 60.1 KB
/
libtcc.c
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
*/
#include "tcc.h"
/********************************************************/
/* global variables */
/* display benchmark infos */
int total_lines;
int total_bytes;
/* parser */
static struct BufferedFile *file;
static int ch, tok;
static CValue tokc;
static CString tokcstr; /* current parsed string, if any */
/* additional informations about token */
static int tok_flags;
#define TOK_FLAG_BOL 0x0001 /* beginning of line before */
#define TOK_FLAG_BOF 0x0002 /* beginning of file before */
#define TOK_FLAG_ENDIF 0x0004 /* a endif was found matching starting #ifdef */
#define TOK_FLAG_EOF 0x0008 /* end of file */
static int *macro_ptr, *macro_ptr_allocated;
static int *unget_saved_macro_ptr;
static int unget_saved_buffer[TOK_MAX_SIZE + 1];
static int unget_buffer_enabled;
static int parse_flags;
#define PARSE_FLAG_PREPROCESS 0x0001 /* activate preprocessing */
#define PARSE_FLAG_TOK_NUM 0x0002 /* return numbers instead of TOK_PPNUM */
#define PARSE_FLAG_LINEFEED 0x0004 /* line feed is returned as a
token. line feed is also
returned at eof */
#define PARSE_FLAG_ASM_COMMENTS 0x0008 /* '#' can be used for line comment */
#define PARSE_FLAG_SPACES 0x0010 /* next() returns space tokens (for -E) */
static Section *text_section, *data_section, *bss_section; /* predefined sections */
static Section *cur_text_section; /* current section where function code is
generated */
#ifdef CONFIG_TCC_ASM
static Section *last_text_section; /* to handle .previous asm directive */
#endif
/* bound check related sections */
static Section *bounds_section; /* contains global data bound description */
static Section *lbounds_section; /* contains local data bound description */
/* symbol sections */
static Section *symtab_section, *strtab_section;
/* debug sections */
static Section *stab_section, *stabstr_section;
/* loc : local variable index
ind : output code index
rsym: return symbol
anon_sym: anonymous symbol index
*/
static int rsym, anon_sym, ind, loc;
/* expression generation modifiers */
static int const_wanted; /* true if constant wanted */
static int nocode_wanted; /* true if no code generation wanted for an expression */
static int global_expr; /* true if compound literals must be allocated
globally (used during initializers parsing */
static CType func_vt; /* current function return type (used by return
instruction) */
static int func_vc;
static int last_line_num, last_ind, func_ind; /* debug last line number and pc */
static int tok_ident;
static TokenSym **table_ident;
static TokenSym *hash_ident[TOK_HASH_SIZE];
static char token_buf[STRING_MAX_SIZE + 1];
static char *funcname;
static Sym *global_stack, *local_stack;
static Sym *define_stack;
static Sym *global_label_stack, *local_label_stack;
/* symbol allocator */
#define SYM_POOL_NB (8192 / sizeof(Sym))
static Sym *sym_free_first;
static void **sym_pools;
static int nb_sym_pools;
static SValue vstack[VSTACK_SIZE], *vtop;
/* some predefined types */
static CType char_pointer_type, func_old_type, int_type;
/* use GNU C extensions */
static int gnu_ext = 1;
/* use Tiny C extensions */
static int tcc_ext = 1;
/* max number of callers shown if error */
#ifdef CONFIG_TCC_BACKTRACE
int num_callers = 6;
const char **rt_bound_error_msg;
#endif
/* XXX: get rid of this ASAP */
static struct TCCState *tcc_state;
/********************************************************/
/* function prototypes */
/* tccpp.c */
static void next(void);
char *get_tok_str(int v, CValue *cv);
/* tccgen.c */
static void parse_expr_type(CType *type);
static void expr_type(CType *type);
static void unary_type(CType *type);
static void block(int *bsym, int *csym, int *case_sym, int *def_sym,
int case_reg, int is_expr);
static int expr_const(void);
static void expr_eq(void);
static void gexpr(void);
static void gen_inline_functions(void);
static void decl(int l);
static void decl_initializer(CType *type, Section *sec, unsigned long c,
int first, int size_only);
static void decl_initializer_alloc(CType *type, AttributeDef *ad, int r,
int has_init, int v, int scope);
int gv(int rc);
void gv2(int rc1, int rc2);
void move_reg(int r, int s);
void save_regs(int n);
void save_reg(int r);
void vpop(void);
void vswap(void);
void vdup(void);
int get_reg(int rc);
int get_reg_ex(int rc,int rc2);
void gen_op(int op);
void force_charshort_cast(int t);
static void gen_cast(CType *type);
void vstore(void);
static Sym *sym_find(int v);
static Sym *sym_push(int v, CType *type, int r, int c);
/* type handling */
static int type_size(CType *type, int *a);
static inline CType *pointed_type(CType *type);
static int pointed_size(CType *type);
static int lvalue_type(int t);
static int parse_btype(CType *type, AttributeDef *ad);
static void type_decl(CType *type, AttributeDef *ad, int *v, int td);
static int compare_types(CType *type1, CType *type2, int unqualified);
static int is_compatible_types(CType *type1, CType *type2);
static int is_compatible_parameter_types(CType *type1, CType *type2);
int ieee_finite(double d);
void vpushi(int v);
void vpushll(long long v);
void vrott(int n);
void vnrott(int n);
void lexpand_nr(void);
static void vpush_global_sym(CType *type, int v);
void vset(CType *type, int r, int v);
void type_to_str(char *buf, int buf_size,
CType *type, const char *varstr);
static Sym *get_sym_ref(CType *type, Section *sec,
unsigned long offset, unsigned long size);
static Sym *external_global_sym(int v, CType *type, int r);
/* section generation */
static void section_realloc(Section *sec, unsigned long new_size);
static void *section_ptr_add(Section *sec, unsigned long size);
static void put_extern_sym(Sym *sym, Section *section,
unsigned long value, unsigned long size);
static void greloc(Section *s, Sym *sym, unsigned long addr, int type);
static int put_elf_str(Section *s, const char *sym);
static int put_elf_sym(Section *s,
unsigned long value, unsigned long size,
int info, int other, int shndx, const char *name);
static int add_elf_sym(Section *s, unsigned long value, unsigned long size,
int info, int other, int sh_num, const char *name);
static void put_elf_reloc(Section *symtab, Section *s, unsigned long offset,
int type, int symbol);
static void put_stabs(const char *str, int type, int other, int desc,
unsigned long value);
static void put_stabs_r(const char *str, int type, int other, int desc,
unsigned long value, Section *sec, int sym_index);
static void put_stabn(int type, int other, int desc, int value);
static void put_stabd(int type, int other, int desc);
static int tcc_add_dll(TCCState *s, const char *filename, int flags);
#define AFF_PRINT_ERROR 0x0001 /* print error if file not found */
#define AFF_REFERENCED_DLL 0x0002 /* load a referenced dll from another dll */
#define AFF_PREPROCESS 0x0004 /* preprocess file */
static int tcc_add_file_internal(TCCState *s, const char *filename, int flags);
/* tcccoff.c */
int tcc_output_coff(TCCState *s1, FILE *f);
/* tccpe.c */
void *resolve_sym(TCCState *s1, const char *sym, int type);
int pe_load_def_file(struct TCCState *s1, int fd);
int pe_test_res_file(void *v, int size);
int pe_load_res_file(struct TCCState *s1, int fd);
void pe_add_runtime(struct TCCState *s1);
void pe_guess_outfile(char *objfilename, int output_type);
int pe_output_file(struct TCCState *s1, const char *filename);
/* tccasm.c */
#ifdef CONFIG_TCC_ASM
static void asm_expr(TCCState *s1, ExprValue *pe);
static int asm_int_expr(TCCState *s1);
static int find_constraint(ASMOperand *operands, int nb_operands,
const char *name, const char **pp);
static int tcc_assemble(TCCState *s1, int do_preprocess);
#endif
static void asm_instr(void);
static void asm_global_instr(void);
/********************************************************/
/* global variables */
#ifdef TCC_TARGET_I386
#include "i386-gen.c"
#endif
#ifdef TCC_TARGET_ARM
#include "arm-gen.c"
#endif
#ifdef TCC_TARGET_C67
#include "c67-gen.c"
#endif
#ifdef TCC_TARGET_X86_64
#include "x86_64-gen.c"
#endif
#ifdef CONFIG_TCC_STATIC
#define RTLD_LAZY 0x001
#define RTLD_NOW 0x002
#define RTLD_GLOBAL 0x100
#define RTLD_DEFAULT NULL
/* dummy function for profiling */
void *dlopen(const char *filename, int flag)
{
return NULL;
}
void dlclose(void *p)
{
}
const char *dlerror(void)
{
return "error";
}
typedef struct TCCSyms {
char *str;
void *ptr;
} TCCSyms;
#define TCCSYM(a) { #a, &a, },
/* add the symbol you want here if no dynamic linking is done */
static TCCSyms tcc_syms[] = {
#if !defined(CONFIG_TCCBOOT)
TCCSYM(printf)
TCCSYM(fprintf)
TCCSYM(fopen)
TCCSYM(fclose)
#endif
{ NULL, NULL },
};
void *resolve_sym(TCCState *s1, const char *symbol, int type)
{
TCCSyms *p;
p = tcc_syms;
while (p->str != NULL) {
if (!strcmp(p->str, symbol))
return p->ptr;
p++;
}
return NULL;
}
#elif !defined(_WIN32)
#include <dlfcn.h>
void *resolve_sym(TCCState *s1, const char *sym, int type)
{
return dlsym(RTLD_DEFAULT, sym);
}
#endif
/********************************************************/
/* we use our own 'finite' function to avoid potential problems with
non standard math libs */
/* XXX: endianness dependent */
int ieee_finite(double d)
{
int *p = (int *)&d;
return ((unsigned)((p[1] | 0x800fffff) + 1)) >> 31;
}
/* copy a string and truncate it. */
char *pstrcpy(char *buf, int buf_size, const char *s)
{
char *q, *q_end;
int c;
if (buf_size > 0) {
q = buf;
q_end = buf + buf_size - 1;
while (q < q_end) {
c = *s++;
if (c == '\0')
break;
*q++ = c;
}
*q = '\0';
}
return buf;
}
/* strcat and truncate. */
char *pstrcat(char *buf, int buf_size, const char *s)
{
int len;
len = strlen(buf);
if (len < buf_size)
pstrcpy(buf + len, buf_size - len, s);
return buf;
}
/* extract the basename of a file */
char *tcc_basename(const char *name)
{
char *p = strchr(name, 0);
while (p > name && !IS_PATHSEP(p[-1]))
--p;
return p;
}
char *tcc_fileextension (const char *name)
{
char *b = tcc_basename(name);
char *e = strrchr(b, '.');
return e ? e : strchr(b, 0);
}
#ifdef _WIN32
char *normalize_slashes(char *path)
{
char *p;
for (p = path; *p; ++p)
if (*p == '\\')
*p = '/';
return path;
}
void tcc_set_lib_path_w32(TCCState *s)
{
/* on win32, we suppose the lib and includes are at the location
of 'tcc.exe' */
char path[1024], *p;
GetModuleFileNameA(NULL, path, sizeof path);
p = tcc_basename(normalize_slashes(strlwr(path)));
if (p - 5 > path && 0 == strncmp(p - 5, "/bin/", 5))
p -= 5;
else if (p > path)
p--;
*p = 0;
tcc_set_lib_path(s, path);
}
#endif
void set_pages_executable(void *ptr, unsigned long length)
{
#ifdef _WIN32
unsigned long old_protect;
VirtualProtect(ptr, length, PAGE_EXECUTE_READWRITE, &old_protect);
#else
unsigned long start, end;
start = (unsigned long)ptr & ~(PAGESIZE - 1);
end = (unsigned long)ptr + length;
end = (end + PAGESIZE - 1) & ~(PAGESIZE - 1);
mprotect((void *)start, end - start, PROT_READ | PROT_WRITE | PROT_EXEC);
#endif
}
/* memory management */
#ifdef MEM_DEBUG
int mem_cur_size;
int mem_max_size;
unsigned malloc_usable_size(void*);
#endif
void tcc_free(void *ptr)
{
#ifdef MEM_DEBUG
mem_cur_size -= malloc_usable_size(ptr);
#endif
free(ptr);
}
void *tcc_malloc(unsigned long size)
{
void *ptr;
ptr = malloc(size);
if (!ptr && size)
error("memory full");
#ifdef MEM_DEBUG
mem_cur_size += malloc_usable_size(ptr);
if (mem_cur_size > mem_max_size)
mem_max_size = mem_cur_size;
#endif
return ptr;
}
void *tcc_mallocz(unsigned long size)
{
void *ptr;
ptr = tcc_malloc(size);
memset(ptr, 0, size);
return ptr;
}
void *tcc_realloc(void *ptr, unsigned long size)
{
void *ptr1;
#ifdef MEM_DEBUG
mem_cur_size -= malloc_usable_size(ptr);
#endif
ptr1 = realloc(ptr, size);
#ifdef MEM_DEBUG
/* NOTE: count not correct if alloc error, but not critical */
mem_cur_size += malloc_usable_size(ptr1);
if (mem_cur_size > mem_max_size)
mem_max_size = mem_cur_size;
#endif
return ptr1;
}
char *tcc_strdup(const char *str)
{
char *ptr;
ptr = tcc_malloc(strlen(str) + 1);
strcpy(ptr, str);
return ptr;
}
#define free(p) use_tcc_free(p)
#define malloc(s) use_tcc_malloc(s)
#define realloc(p, s) use_tcc_realloc(p, s)
void dynarray_add(void ***ptab, int *nb_ptr, void *data)
{
int nb, nb_alloc;
void **pp;
nb = *nb_ptr;
pp = *ptab;
/* every power of two we double array size */
if ((nb & (nb - 1)) == 0) {
if (!nb)
nb_alloc = 1;
else
nb_alloc = nb * 2;
pp = tcc_realloc(pp, nb_alloc * sizeof(void *));
if (!pp)
error("memory full");
*ptab = pp;
}
pp[nb++] = data;
*nb_ptr = nb;
}
void dynarray_reset(void *pp, int *n)
{
void **p;
for (p = *(void***)pp; *n; ++p, --*n)
if (*p)
tcc_free(*p);
tcc_free(*(void**)pp);
*(void**)pp = NULL;
}
/* symbol allocator */
static Sym *__sym_malloc(void)
{
Sym *sym_pool, *sym, *last_sym;
int i;
sym_pool = tcc_malloc(SYM_POOL_NB * sizeof(Sym));
dynarray_add(&sym_pools, &nb_sym_pools, sym_pool);
last_sym = sym_free_first;
sym = sym_pool;
for(i = 0; i < SYM_POOL_NB; i++) {
sym->next = last_sym;
last_sym = sym;
sym++;
}
sym_free_first = last_sym;
return last_sym;
}
static inline Sym *sym_malloc(void)
{
Sym *sym;
sym = sym_free_first;
if (!sym)
sym = __sym_malloc();
sym_free_first = sym->next;
return sym;
}
static inline void sym_free(Sym *sym)
{
sym->next = sym_free_first;
sym_free_first = sym;
}
Section *new_section(TCCState *s1, const char *name, int sh_type, int sh_flags)
{
Section *sec;
sec = tcc_mallocz(sizeof(Section) + strlen(name));
strcpy(sec->name, name);
sec->sh_type = sh_type;
sec->sh_flags = sh_flags;
switch(sh_type) {
case SHT_HASH:
case SHT_REL:
case SHT_RELA:
case SHT_DYNSYM:
case SHT_SYMTAB:
case SHT_DYNAMIC:
sec->sh_addralign = 4;
break;
case SHT_STRTAB:
sec->sh_addralign = 1;
break;
default:
sec->sh_addralign = 32; /* default conservative alignment */
break;
}
if (sh_flags & SHF_PRIVATE) {
dynarray_add((void ***)&s1->priv_sections, &s1->nb_priv_sections, sec);
} else {
sec->sh_num = s1->nb_sections;
dynarray_add((void ***)&s1->sections, &s1->nb_sections, sec);
}
return sec;
}
static void free_section(Section *s)
{
tcc_free(s->data);
}
/* realloc section and set its content to zero */
static void section_realloc(Section *sec, unsigned long new_size)
{
unsigned long size;
unsigned char *data;
size = sec->data_allocated;
if (size == 0)
size = 1;
while (size < new_size)
size = size * 2;
data = tcc_realloc(sec->data, size);
if (!data)
error("memory full");
memset(data + sec->data_allocated, 0, size - sec->data_allocated);
sec->data = data;
sec->data_allocated = size;
}
/* reserve at least 'size' bytes in section 'sec' from
sec->data_offset. */
static void *section_ptr_add(Section *sec, unsigned long size)
{
unsigned long offset, offset1;
offset = sec->data_offset;
offset1 = offset + size;
if (offset1 > sec->data_allocated)
section_realloc(sec, offset1);
sec->data_offset = offset1;
return sec->data + offset;
}
/* return a reference to a section, and create it if it does not
exists */
Section *find_section(TCCState *s1, const char *name)
{
Section *sec;
int i;
for(i = 1; i < s1->nb_sections; i++) {
sec = s1->sections[i];
if (!strcmp(name, sec->name))
return sec;
}
/* sections are created as PROGBITS */
return new_section(s1, name, SHT_PROGBITS, SHF_ALLOC);
}
/* update sym->c so that it points to an external symbol in section
'section' with value 'value' */
static void put_extern_sym2(Sym *sym, Section *section,
unsigned long value, unsigned long size,
int can_add_underscore)
{
int sym_type, sym_bind, sh_num, info, other, attr;
ElfW(Sym) *esym;
const char *name;
char buf1[256];
if (section == NULL)
sh_num = SHN_UNDEF;
else if (section == SECTION_ABS)
sh_num = SHN_ABS;
else
sh_num = section->sh_num;
other = attr = 0;
if ((sym->type.t & VT_BTYPE) == VT_FUNC) {
sym_type = STT_FUNC;
#ifdef TCC_TARGET_PE
if (sym->type.ref)
attr = sym->type.ref->r;
if (FUNC_EXPORT(attr))
other |= 1;
if (FUNC_CALL(attr) == FUNC_STDCALL)
other |= 2;
#endif
} else {
sym_type = STT_OBJECT;
}
if (sym->type.t & VT_STATIC)
sym_bind = STB_LOCAL;
else
sym_bind = STB_GLOBAL;
if (!sym->c) {
name = get_tok_str(sym->v, NULL);
#ifdef CONFIG_TCC_BCHECK
if (tcc_state->do_bounds_check) {
char buf[32];
/* XXX: avoid doing that for statics ? */
/* if bound checking is activated, we change some function
names by adding the "__bound" prefix */
switch(sym->v) {
#if 0
/* XXX: we rely only on malloc hooks */
case TOK_malloc:
case TOK_free:
case TOK_realloc:
case TOK_memalign:
case TOK_calloc:
#endif
case TOK_memcpy:
case TOK_memmove:
case TOK_memset:
case TOK_strlen:
case TOK_strcpy:
case TOK_alloca:
strcpy(buf, "__bound_");
strcat(buf, name);
name = buf;
break;
}
}
#endif
#ifdef TCC_TARGET_PE
if ((other & 2) && can_add_underscore) {
sprintf(buf1, "_%s@%d", name, FUNC_ARGS(attr));
name = buf1;
} else
#endif
if (tcc_state->leading_underscore && can_add_underscore) {
buf1[0] = '_';
pstrcpy(buf1 + 1, sizeof(buf1) - 1, name);
name = buf1;
}
info = ELFW(ST_INFO)(sym_bind, sym_type);
sym->c = add_elf_sym(symtab_section, value, size, info, other, sh_num, name);
} else {
esym = &((ElfW(Sym) *)symtab_section->data)[sym->c];
esym->st_value = value;
esym->st_size = size;
esym->st_shndx = sh_num;
esym->st_other |= other;
}
}
static void put_extern_sym(Sym *sym, Section *section,
unsigned long value, unsigned long size)
{
put_extern_sym2(sym, section, value, size, 1);
}
/* add a new relocation entry to symbol 'sym' in section 's' */
static void greloc(Section *s, Sym *sym, unsigned long offset, int type)
{
if (!sym->c)
put_extern_sym(sym, NULL, 0, 0);
/* now we can add ELF relocation info */
put_elf_reloc(symtab_section, s, offset, type, sym->c);
}
static inline int isid(int c)
{
return (c >= 'a' && c <= 'z') ||
(c >= 'A' && c <= 'Z') ||
c == '_';
}
static inline int isnum(int c)
{
return c >= '0' && c <= '9';
}
static inline int isoct(int c)
{
return c >= '0' && c <= '7';
}
static inline int toup(int c)
{
if (c >= 'a' && c <= 'z')
return c - 'a' + 'A';
else
return c;
}
static void strcat_vprintf(char *buf, int buf_size, const char *fmt, va_list ap)
{
int len;
len = strlen(buf);
vsnprintf(buf + len, buf_size - len, fmt, ap);
}
static void strcat_printf(char *buf, int buf_size, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
strcat_vprintf(buf, buf_size, fmt, ap);
va_end(ap);
}
void error1(TCCState *s1, int is_warning, const char *fmt, va_list ap)
{
char buf[2048];
BufferedFile **f;
buf[0] = '\0';
if (file) {
for(f = s1->include_stack; f < s1->include_stack_ptr; f++)
strcat_printf(buf, sizeof(buf), "In file included from %s:%d:\n",
(*f)->filename, (*f)->line_num);
if (file->line_num > 0) {
strcat_printf(buf, sizeof(buf),
"%s:%d: ", file->filename, file->line_num);
} else {
strcat_printf(buf, sizeof(buf),
"%s: ", file->filename);
}
} else {
strcat_printf(buf, sizeof(buf),
"tcc: ");
}
if (is_warning)
strcat_printf(buf, sizeof(buf), "warning: ");
strcat_vprintf(buf, sizeof(buf), fmt, ap);
if (!s1->error_func) {
/* default case: stderr */
fprintf(stderr, "%s\n", buf);
} else {
s1->error_func(s1->error_opaque, buf);
}
if (!is_warning || s1->warn_error)
s1->nb_errors++;
}
void tcc_set_error_func(TCCState *s, void *error_opaque,
void (*error_func)(void *opaque, const char *msg))
{
s->error_opaque = error_opaque;
s->error_func = error_func;
}
/* error without aborting current compilation */
void error_noabort(const char *fmt, ...)
{
TCCState *s1 = tcc_state;
va_list ap;
va_start(ap, fmt);
error1(s1, 0, fmt, ap);
va_end(ap);
}
void error(const char *fmt, ...)
{
TCCState *s1 = tcc_state;
va_list ap;
va_start(ap, fmt);
error1(s1, 0, fmt, ap);
va_end(ap);
/* better than nothing: in some cases, we accept to handle errors */
if (s1->error_set_jmp_enabled) {
longjmp(s1->error_jmp_buf, 1);
} else {
/* XXX: eliminate this someday */
exit(1);
}
}
void expect(const char *msg)
{
error("%s expected", msg);
}
void warning(const char *fmt, ...)
{
TCCState *s1 = tcc_state;
va_list ap;
if (s1->warn_none)
return;
va_start(ap, fmt);
error1(s1, 1, fmt, ap);
va_end(ap);
}
void skip(int c)
{
if (tok != c)
error("'%c' expected", c);
next();
}
static void test_lvalue(void)
{
if (!(vtop->r & VT_LVAL))
expect("lvalue");
}
/* CString handling */
static void cstr_realloc(CString *cstr, int new_size)
{
int size;
void *data;
size = cstr->size_allocated;
if (size == 0)
size = 8; /* no need to allocate a too small first string */
while (size < new_size)
size = size * 2;
data = tcc_realloc(cstr->data_allocated, size);
if (!data)
error("memory full");
cstr->data_allocated = data;
cstr->size_allocated = size;
cstr->data = data;
}
/* add a byte */
static inline void cstr_ccat(CString *cstr, int ch)
{
int size;
size = cstr->size + 1;
if (size > cstr->size_allocated)
cstr_realloc(cstr, size);
((unsigned char *)cstr->data)[size - 1] = ch;
cstr->size = size;
}
static void cstr_cat(CString *cstr, const char *str)
{
int c;
for(;;) {
c = *str;
if (c == '\0')
break;
cstr_ccat(cstr, c);
str++;
}
}
/* add a wide char */
static void cstr_wccat(CString *cstr, int ch)
{
int size;
size = cstr->size + sizeof(nwchar_t);
if (size > cstr->size_allocated)
cstr_realloc(cstr, size);
*(nwchar_t *)(((unsigned char *)cstr->data) + size - sizeof(nwchar_t)) = ch;
cstr->size = size;
}
static void cstr_new(CString *cstr)
{
memset(cstr, 0, sizeof(CString));
}
/* free string and reset it to NULL */
static void cstr_free(CString *cstr)
{
tcc_free(cstr->data_allocated);
cstr_new(cstr);
}
#define cstr_reset(cstr) cstr_free(cstr)
/* XXX: unicode ? */
static void add_char(CString *cstr, int c)
{
if (c == '\'' || c == '\"' || c == '\\') {
/* XXX: could be more precise if char or string */
cstr_ccat(cstr, '\\');
}
if (c >= 32 && c <= 126) {
cstr_ccat(cstr, c);
} else {
cstr_ccat(cstr, '\\');
if (c == '\n') {
cstr_ccat(cstr, 'n');
} else {
cstr_ccat(cstr, '0' + ((c >> 6) & 7));
cstr_ccat(cstr, '0' + ((c >> 3) & 7));
cstr_ccat(cstr, '0' + (c & 7));
}
}
}
/* push, without hashing */
static Sym *sym_push2(Sym **ps, int v, int t, long c)
{
Sym *s;
s = sym_malloc();
s->v = v;
s->type.t = t;
s->c = c;
s->next = NULL;
/* add in stack */
s->prev = *ps;
*ps = s;
return s;
}
/* find a symbol and return its associated structure. 's' is the top
of the symbol stack */
static Sym *sym_find2(Sym *s, int v)
{
while (s) {
if (s->v == v)
return s;
s = s->prev;
}
return NULL;
}
/* structure lookup */