?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
bitfields: Implement MS compatible layout
[tinycc.git] / tcc.h
blob7630f4cb1924752acd621ab77cc9133ac18bff67
1 /*
2 * TCC - Tiny C Compiler
3 *
4 * Copyright (c) 2001-2004 Fabrice Bellard
5 *
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.
10 *
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.
15 *
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
19 */
20
21 #ifndef _TCC_H
22 #define _TCC_H
23
24 #define _GNU_SOURCE
25 #include "config.h"
26
27 #include <stdlib.h>
28 #include <stdio.h>
29 #include <stdarg.h>
30 #include <string.h>
31 #include <errno.h>
32 #include <math.h>
33 #include <fcntl.h>
34 #include <setjmp.h>
35 #include <time.h>
36
37 #ifndef _WIN32
38 # include <unistd.h>
39 # include <sys/time.h>
40 # ifndef CONFIG_TCC_STATIC
41 # include <dlfcn.h>
42 # endif
43 /* XXX: need to define this to use them in non ISOC99 context */
44 extern float strtof (const char *__nptr, char **__endptr);
45 extern long double strtold (const char *__nptr, char **__endptr);
46
47 #else /* on _WIN32: */
48 # include <windows.h>
49 # include <io.h> /* open, close etc. */
50 # include <direct.h> /* getcwd */
51 # ifdef __GNUC__
52 # include <stdint.h>
53 # endif
54 # define inline __inline
55 # define inp next_inp /* inp is an intrinsic on msvc */
56 # define snprintf _snprintf
57 # define vsnprintf _vsnprintf
58 # ifndef __GNUC__
59 # define strtold (long double)strtod
60 # define strtof (float)strtod
61 # define strtoll _strtoi64
62 # define strtoull _strtoui64
63 # endif
64 # ifdef LIBTCC_AS_DLL
65 # define LIBTCCAPI __declspec(dllexport)
66 # define PUB_FUNC LIBTCCAPI
67 # endif
68 # ifdef _MSC_VER
69 # pragma warning (disable : 4244) // conversion from 'uint64_t' to 'int', possible loss of data
70 # pragma warning (disable : 4267) // conversion from 'size_t' to 'int', possible loss of data
71 # pragma warning (disable : 4996) // The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name
72 # pragma warning (disable : 4018) // signed/unsigned mismatch
73 # pragma warning (disable : 4146) // unary minus operator applied to unsigned type, result still unsigned
74 # endif
75 # undef CONFIG_TCC_STATIC
76 #endif
77
78 #ifndef O_BINARY
79 # define O_BINARY 0
80 #endif
81
82 #ifdef __GNUC__
83 # define NORETURN __attribute__ ((noreturn))
84 #elif defined _MSC_VER
85 # define NORETURN __declspec(noreturn)
86 #else
87 # define NORETURN
88 #endif
89
90 #ifdef _WIN32
91 # define IS_DIRSEP(c) (c == '/' || c == '\\')
92 # define IS_ABSPATH(p) (IS_DIRSEP(p[0]) || (p[0] && p[1] == ':' && IS_DIRSEP(p[2])))
93 # define PATHCMP stricmp
94 #else
95 # define IS_DIRSEP(c) (c == '/')
96 # define IS_ABSPATH(p) IS_DIRSEP(p[0])
97 # define PATHCMP strcmp
98 #endif
99
100 #ifdef TCC_TARGET_PE
101 #define PATHSEP ';'
102 #else
103 #define PATHSEP ':'
104 #endif
105
106 /* -------------------------------------------- */
107
108 /* parser debug */
109 /* #define PARSE_DEBUG */
110 /* preprocessor debug */
111 /* #define PP_DEBUG */
112 /* include file debug */
113 /* #define INC_DEBUG */
114 /* memory leak debug */
115 /* #define MEM_DEBUG */
116 /* assembler debug */
117 /* #define ASM_DEBUG */
118
119 /* target selection */
120 /* #define TCC_TARGET_I386 *//* i386 code generator */
121 /* #define TCC_TARGET_ARM *//* ARMv4 code generator */
122 /* #define TCC_TARGET_ARM64 *//* ARMv8 code generator */
123 /* #define TCC_TARGET_C67 *//* TMS320C67xx code generator */
124 /* #define TCC_TARGET_X86_64 *//* x86-64 code generator */
125
126 /* default target is I386 */
127 #if !defined(TCC_TARGET_I386) && !defined(TCC_TARGET_ARM) && \
128 !defined(TCC_TARGET_ARM64) && !defined(TCC_TARGET_C67) && \
129 !defined(TCC_TARGET_X86_64)
130 #define TCC_TARGET_I386
131 #endif
132
133 #if !defined(TCC_UCLIBC) && !defined(TCC_TARGET_ARM) && \
134 !defined(TCC_TARGET_ARM64) && !defined(TCC_TARGET_C67) && \
135 !defined(CONFIG_USE_LIBGCC)
136 #define CONFIG_TCC_BCHECK /* enable bound checking code */
137 #endif
138
139 /* define it to include assembler support */
140 #if !defined(TCC_TARGET_ARM) && !defined(TCC_TARGET_ARM64) && \
141 !defined(TCC_TARGET_C67)
142 #define CONFIG_TCC_ASM
143 #endif
144
145 /* object format selection */
146 #if defined(TCC_TARGET_C67)
147 #define TCC_TARGET_COFF
148 #endif
149
150 /* only native compiler supports -run */
151 #if defined _WIN32 == defined TCC_TARGET_PE
152 # if (defined __i386__ || defined _X86_) && defined TCC_TARGET_I386
153 # define TCC_IS_NATIVE
154 # elif (defined __x86_64__ || defined _AMD64_) && defined TCC_TARGET_X86_64
155 # define TCC_IS_NATIVE
156 # elif defined __arm__ && defined TCC_TARGET_ARM
157 # define TCC_IS_NATIVE
158 # elif defined __aarch64__ && defined TCC_TARGET_ARM64
159 # define TCC_IS_NATIVE
160 # endif
161 #endif
162
163 #if defined TCC_IS_NATIVE && !defined CONFIG_TCCBOOT
164 # define CONFIG_TCC_BACKTRACE
165 #endif
166
167 /* ------------ path configuration ------------ */
168
169 #ifndef CONFIG_SYSROOT
170 # define CONFIG_SYSROOT ""
171 #endif
172 #ifndef CONFIG_TCCDIR
173 # define CONFIG_TCCDIR "."
174 #endif
175 #ifndef CONFIG_LDDIR
176 # define CONFIG_LDDIR "lib"
177 #endif
178 #ifdef CONFIG_TRIPLET
179 # define USE_TRIPLET(s) s "/" CONFIG_TRIPLET
180 # define ALSO_TRIPLET(s) USE_TRIPLET(s) ":" s
181 #else
182 # define USE_TRIPLET(s) s
183 # define ALSO_TRIPLET(s) s
184 #endif
185
186 /* path to find crt1.o, crti.o and crtn.o */
187 #ifndef CONFIG_TCC_CRTPREFIX
188 # define CONFIG_TCC_CRTPREFIX USE_TRIPLET(CONFIG_SYSROOT "/usr/" CONFIG_LDDIR)
189 #endif
190
191 /* Below: {B} is substituted by CONFIG_TCCDIR (rsp. -B option) */
192
193 /* system include paths */
194 #ifndef CONFIG_TCC_SYSINCLUDEPATHS
195 # ifdef TCC_TARGET_PE
196 # define CONFIG_TCC_SYSINCLUDEPATHS "{B}/include;{B}/include/winapi"
197 # else
198 # define CONFIG_TCC_SYSINCLUDEPATHS \
199 "{B}/include" \
200 ":" ALSO_TRIPLET(CONFIG_SYSROOT "/usr/local/include") \
201 ":" ALSO_TRIPLET(CONFIG_SYSROOT "/usr/include")
202 # endif
203 #endif
204
205 /* library search paths */
206 #ifndef CONFIG_TCC_LIBPATHS
207 # ifdef TCC_TARGET_PE
208 # define CONFIG_TCC_LIBPATHS "{B}/lib"
209 # else
210 # define CONFIG_TCC_LIBPATHS \
211 ALSO_TRIPLET(CONFIG_SYSROOT "/usr/" CONFIG_LDDIR) \
212 ":" ALSO_TRIPLET(CONFIG_SYSROOT "/" CONFIG_LDDIR) \
213 ":" ALSO_TRIPLET(CONFIG_SYSROOT "/usr/local/" CONFIG_LDDIR)
214 # endif
215 #endif
216
217 /* name of ELF interpreter */
218 #ifndef CONFIG_TCC_ELFINTERP
219 # if defined __FreeBSD__
220 # define CONFIG_TCC_ELFINTERP "/libexec/ld-elf.so.1"
221 # elif defined __FreeBSD_kernel__
222 # if defined(TCC_TARGET_X86_64)
223 # define CONFIG_TCC_ELFINTERP "/lib/ld-kfreebsd-x86-64.so.1"
224 # else
225 # define CONFIG_TCC_ELFINTERP "/lib/ld.so.1"
226 # endif
227 # elif defined __DragonFly__
228 # define CONFIG_TCC_ELFINTERP "/usr/libexec/ld-elf.so.2"
229 # elif defined __NetBSD__
230 # define CONFIG_TCC_ELFINTERP "/usr/libexec/ld.elf_so"
231 # elif defined __GNU__
232 # define CONFIG_TCC_ELFINTERP "/lib/ld.so"
233 # elif defined(TCC_TARGET_PE)
234 # define CONFIG_TCC_ELFINTERP "-"
235 # elif defined(TCC_UCLIBC)
236 # define CONFIG_TCC_ELFINTERP "/lib/ld-uClibc.so.0" /* is there a uClibc for x86_64 ? */
237 # elif defined TCC_TARGET_ARM64
238 # define CONFIG_TCC_ELFINTERP "/lib/ld-linux-aarch64.so.1"
239 # elif defined(TCC_TARGET_X86_64)
240 # define CONFIG_TCC_ELFINTERP "/lib64/ld-linux-x86-64.so.2"
241 # elif !defined(TCC_ARM_EABI)
242 # define CONFIG_TCC_ELFINTERP "/lib/ld-linux.so.2"
243 # endif
244 #endif
245
246 /* var elf_interp dans *-gen.c */
247 #ifdef CONFIG_TCC_ELFINTERP
248 # define DEFAULT_ELFINTERP(s) CONFIG_TCC_ELFINTERP
249 #else
250 # define DEFAULT_ELFINTERP(s) default_elfinterp(s)
251 #endif
252
253 /* target specific subdir for libtcc1.a */
254 #ifndef TCC_ARCH_DIR
255 # define TCC_ARCH_DIR ""
256 #endif
257
258 /* library to use with CONFIG_USE_LIBGCC instead of libtcc1.a */
259 #define TCC_LIBGCC USE_TRIPLET(CONFIG_SYSROOT "/" CONFIG_LDDIR) "/libgcc_s.so.1"
260
261 /* -------------------------------------------- */
262
263 #include "libtcc.h"
264 #include "elf.h"
265 #include "stab.h"
266
267 #if defined(TCC_TARGET_ARM64) || defined(TCC_TARGET_X86_64)
268 # define ELFCLASSW ELFCLASS64
269 # define ElfW(type) Elf##64##_##type
270 # define ELFW(type) ELF##64##_##type
271 # define ElfW_Rel ElfW(Rela)
272 # define SHT_RELX SHT_RELA
273 # define REL_SECTION_FMT ".rela%s"
274 #else
275 # define ELFCLASSW ELFCLASS32
276 # define ElfW(type) Elf##32##_##type
277 # define ELFW(type) ELF##32##_##type
278 # define ElfW_Rel ElfW(Rel)
279 # define SHT_RELX SHT_REL
280 # define REL_SECTION_FMT ".rel%s"
281 #endif
282 /* target address type */
283 #define addr_t ElfW(Addr)
284
285 /* -------------------------------------------- */
286 /* include the target specific definitions */
287
288 #define TARGET_DEFS_ONLY
289 #ifdef TCC_TARGET_I386
290 # include "i386-gen.c"
291 # include "i386-link.c"
292 #endif
293 #ifdef TCC_TARGET_X86_64
294 # include "x86_64-gen.c"
295 # include "x86_64-link.c"
296 #endif
297 #ifdef TCC_TARGET_ARM
298 # include "arm-gen.c"
299 # include "arm-link.c"
300 #endif
301 #ifdef TCC_TARGET_ARM64
302 # include "arm64-gen.c"
303 # include "arm64-link.c"
304 #endif
305 #ifdef TCC_TARGET_C67
306 # include "coff.h"
307 # include "c67-gen.c"
308 # include "c67-link.c"
309 #endif
310 #undef TARGET_DEFS_ONLY
311
312 /* -------------------------------------------- */
313
314 #define INCLUDE_STACK_SIZE 32
315 #define IFDEF_STACK_SIZE 64
316 #define VSTACK_SIZE 256
317 #define STRING_MAX_SIZE 1024
318 #define TOKSTR_MAX_SIZE 256
319 #define PACK_STACK_SIZE 8
320
321 #define TOK_HASH_SIZE 16384 /* must be a power of two */
322 #define TOK_ALLOC_INCR 512 /* must be a power of two */
323 #define TOK_MAX_SIZE 4 /* token max size in int unit when stored in string */
324
325 /* token symbol management */
326 typedef struct TokenSym {
327 struct TokenSym *hash_next;
328 struct Sym *sym_define; /* direct pointer to define */
329 struct Sym *sym_label; /* direct pointer to label */
330 struct Sym *sym_struct; /* direct pointer to structure */
331 struct Sym *sym_identifier; /* direct pointer to identifier */
332 int tok; /* token number */
333 int len;
334 char str[1];
335 } TokenSym;
336
337 #ifdef TCC_TARGET_PE
338 typedef unsigned short nwchar_t;
339 #else
340 typedef int nwchar_t;
341 #endif
342
343 typedef struct CString {
344 int size; /* size in bytes */
345 void *data; /* either 'char *' or 'nwchar_t *' */
346 int size_allocated;
347 } CString;
348
349 /* type definition */
350 typedef struct CType {
351 int t;
352 struct Sym *ref;
353 } CType;
354
355 /* constant value */
356 typedef union CValue {
357 long double ld;
358 double d;
359 float f;
360 uint64_t i;
361 struct {
362 int size;
363 const void *data;
364 } str;
365 int tab[LDOUBLE_SIZE/4];
366 } CValue;
367
368 /* value on stack */
369 typedef struct SValue {
370 CType type; /* type */
371 unsigned short r; /* register + flags */
372 unsigned short r2; /* second register, used for 'long long'
373 type. If not used, set to VT_CONST */
374 CValue c; /* constant, if VT_CONST */
375 struct Sym *sym; /* symbol, if (VT_SYM | VT_CONST), or if
376 result of unary() for an identifier. */
377 } SValue;
378
379 struct Attribute {
380 unsigned
381 func_call : 3, /* calling convention (0..5), see below */
382 aligned : 5, /* alignement (0..16) */
383 packed : 1,
384 func_export : 1,
385 func_import : 1,
386 func_args : 5,
387 func_proto : 1,
388 mode : 4,
389 weak : 1,
390 visibility : 2,
391 unsigned_enum : 1,
392 fill : 7; // 7 bits left to fit well in union below
393 };
394
395 /* GNUC attribute definition */
396 typedef struct AttributeDef {
397 struct Attribute a;
398 struct Section *section;
399 int alias_target; /* token */
400 int asm_label; /* associated asm label */
401 } AttributeDef;
402
403 /* symbol management */
404 typedef struct Sym {
405 int v; /* symbol token */
406 union {
407 int asm_label; /* associated asm label */
408 int scope; /* scope level for locals */
409 };
410 union {
411 long r; /* associated register or VT_CONST/VT_LOCAL and LVAL type */
412 struct Attribute a;
413 };
414 union {
415 long c; /* associated number */
416 int *d; /* define token stream */
417 };
418 CType type; /* associated type */
419 union {
420 struct Sym *next; /* next related symbol (for fields and anoms) */
421 long jnext; /* next jump label */
422 };
423 struct Sym *prev; /* prev symbol in stack */
424 struct Sym *prev_tok; /* previous symbol for this token */
425 } Sym;
426
427 /* section definition */
428 /* XXX: use directly ELF structure for parameters ? */
429 /* special flag to indicate that the section should not be linked to
430 the other ones */
431 #define SHF_PRIVATE 0x80000000
432
433 /* special flag, too */
434 #define SECTION_ABS ((void *)1)
435
436 typedef struct Section {
437 unsigned long data_offset; /* current data offset */
438 unsigned char *data; /* section data */
439 unsigned long data_allocated; /* used for realloc() handling */
440 int sh_name; /* elf section name (only used during output) */
441 int sh_num; /* elf section number */
442 int sh_type; /* elf section type */
443 int sh_flags; /* elf section flags */
444 int sh_info; /* elf section info */
445 int sh_addralign; /* elf section alignment */
446 int sh_entsize; /* elf entry size */
447 unsigned long sh_size; /* section size (only used during output) */
448 addr_t sh_addr; /* address at which the section is relocated */
449 unsigned long sh_offset; /* file offset */
450 int nb_hashed_syms; /* used to resize the hash table */
451 struct Section *link; /* link to another section */
452 struct Section *reloc; /* corresponding section for relocation, if any */
453 struct Section *hash; /* hash table for symbols */
454 struct Section *prev; /* previous section on section stack */
455 char name[1]; /* section name */
456 } Section;
457
458 typedef struct DLLReference {
459 int level;
460 void *handle;
461 char name[1];
462 } DLLReference;
463
464 /* -------------------------------------------------- */
465
466 #define SYM_STRUCT 0x40000000 /* struct/union/enum symbol space */
467 #define SYM_FIELD 0x20000000 /* struct/union field symbol space */
468 #define SYM_FIRST_ANOM 0x10000000 /* first anonymous sym */
469
470 /* stored in 'Sym.c' field */
471 #define FUNC_NEW 1 /* ansi function prototype */
472 #define FUNC_OLD 2 /* old function prototype */
473 #define FUNC_ELLIPSIS 3 /* ansi function prototype with ... */
474
475 /* stored in 'Sym.r' field */
476 #define FUNC_CDECL 0 /* standard c call */
477 #define FUNC_STDCALL 1 /* pascal c call */
478 #define FUNC_FASTCALL1 2 /* first param in %eax */
479 #define FUNC_FASTCALL2 3 /* first parameters in %eax, %edx */
480 #define FUNC_FASTCALL3 4 /* first parameter in %eax, %edx, %ecx */
481 #define FUNC_FASTCALLW 5 /* first parameter in %ecx, %edx */
482
483 /* field 'Sym.t' for macros */
484 #define MACRO_OBJ 0 /* object like macro */
485 #define MACRO_FUNC 1 /* function like macro */
486
487 /* field 'Sym.r' for C labels */
488 #define LABEL_DEFINED 0 /* label is defined */
489 #define LABEL_FORWARD 1 /* label is forward defined */
490 #define LABEL_DECLARED 2 /* label is declared but never used */
491
492 /* type_decl() types */
493 #define TYPE_ABSTRACT 1 /* type without variable */
494 #define TYPE_DIRECT 2 /* type with variable */
495
496 #define IO_BUF_SIZE 8192
497
498 typedef struct BufferedFile {
499 uint8_t *buf_ptr;
500 uint8_t *buf_end;
501 int fd;
502 struct BufferedFile *prev;
503 int line_num; /* current line number - here to simplify code */
504 int line_ref; /* tcc -E: last printed line */
505 int ifndef_macro; /* #ifndef macro / #endif search */
506 int ifndef_macro_saved; /* saved ifndef_macro */
507 int *ifdef_stack_ptr; /* ifdef_stack value at the start of the file */
508 int include_next_index; /* next search path */
509 char filename[1024]; /* filename */
510 unsigned char unget[4];
511 unsigned char buffer[1]; /* extra size for CH_EOB char */
512 } BufferedFile;
513
514 #define CH_EOB '\\' /* end of buffer or '\0' char in file */
515 #define CH_EOF (-1) /* end of file */
516
517 /* parsing state (used to save parser state to reparse part of the
518 source several times) */
519 typedef struct ParseState {
520 const int *macro_ptr;
521 int line_num;
522 int tok;
523 CValue tokc;
524 } ParseState;
525
526 /* used to record tokens */
527 typedef struct TokenString {
528 int *str;
529 int len;
530 int allocated_len;
531 int last_line_num;
532 /* used to chain token-strings with begin/end_macro() */
533 struct TokenString *prev;
534 const int *prev_ptr;
535 char alloc;
536 } TokenString;
537
538 /* inline functions */
539 typedef struct InlineFunc {
540 TokenString *func_str;
541 Sym *sym;
542 char filename[1];
543 } InlineFunc;
544
545 /* include file cache, used to find files faster and also to eliminate
546 inclusion if the include file is protected by #ifndef ... #endif */
547 typedef struct CachedInclude {
548 int ifndef_macro;
549 int once;
550 int hash_next; /* -1 if none */
551 char filename[1]; /* path specified in #include */
552 } CachedInclude;
553
554 #define CACHED_INCLUDES_HASH_SIZE 32
555
556 #ifdef CONFIG_TCC_ASM
557 typedef struct ExprValue {
558 uint64_t v;
559 Sym *sym;
560 int pcrel;
561 } ExprValue;
562
563 #define MAX_ASM_OPERANDS 30
564 typedef struct ASMOperand {
565 int id; /* GCC 3 optionnal identifier (0 if number only supported */
566 char *constraint;
567 char asm_str[16]; /* computed asm string for operand */
568 SValue *vt; /* C value of the expression */
569 int ref_index; /* if >= 0, gives reference to a output constraint */
570 int input_index; /* if >= 0, gives reference to an input constraint */
571 int priority; /* priority, used to assign registers */
572 int reg; /* if >= 0, register number used for this operand */
573 int is_llong; /* true if double register value */
574 int is_memory; /* true if memory operand */
575 int is_rw; /* for '+' modifier */
576 } ASMOperand;
577 #endif
578
579 /* extra symbol attributes (not in symbol table) */
580 struct sym_attr {
581 unsigned got_offset;
582 unsigned plt_offset;
583 int plt_sym;
584 int dyn_index;
585 #ifdef TCC_TARGET_ARM
586 unsigned char plt_thumb_stub:1;
587 #endif
588 };
589
590 struct TCCState {
591
592 int verbose; /* if true, display some information during compilation */
593 int nostdinc; /* if true, no standard headers are added */
594 int nostdlib; /* if true, no standard libraries are added */
595 int nocommon; /* if true, do not use common symbols for .bss data */
596 int static_link; /* if true, static linking is performed */
597 int rdynamic; /* if true, all symbols are exported */
598 int symbolic; /* if true, resolve symbols in the current module first */
599 int alacarte_link; /* if true, only link in referenced objects from archive */
600
601 char *tcc_lib_path; /* CONFIG_TCCDIR or -B option */
602 char *soname; /* as specified on the command line (-soname) */
603 char *rpath; /* as specified on the command line (-Wl,-rpath=) */
604
605 /* output type, see TCC_OUTPUT_XXX */
606 int output_type;
607 /* output format, see TCC_OUTPUT_FORMAT_xxx */
608 int output_format;
609
610 /* C language options */
611 int char_is_unsigned;
612 int leading_underscore;
613 int ms_extensions; /* allow nested named struct w/o identifier behave like unnamed */
614 int old_struct_init_code; /* use old algorithm to init array in struct when there is no '{' used.
615 Liuux 2.4.26 can't find initrd when compiled with a new algorithm */
616 int dollars_in_identifiers; /* allows '$' char in indentifiers */
617 int ms_bitfields; /* if true, emulate MS algorithm for aligning bitfields */
618
619 /* warning switches */
620 int warn_write_strings;
621 int warn_unsupported;
622 int warn_error;
623 int warn_none;
624 int warn_implicit_function_declaration;
625
626 /* compile with debug symbol (and use them if error during execution) */
627 int do_debug;
628 #ifdef CONFIG_TCC_BCHECK
629 /* compile with built-in memory and bounds checker */
630 int do_bounds_check;
631 #endif
632 #ifdef TCC_TARGET_ARM
633 enum float_abi float_abi; /* float ABI of the generated code*/
634 #endif
635
636 addr_t text_addr; /* address of text section */
637 int has_text_addr;
638
639 unsigned section_align; /* section alignment */
640
641 char *init_symbol; /* symbols to call at load-time (not used currently) */
642 char *fini_symbol; /* symbols to call at unload-time (not used currently) */
643
644 #ifdef TCC_TARGET_I386
645 int seg_size; /* 32. Can be 16 with i386 assembler (.code16) */
646 #endif
647 #ifdef TCC_TARGET_X86_64
648 int nosse; /* For -mno-sse support. */
649 #endif
650
651 /* array of all loaded dlls (including those referenced by loaded dlls) */
652 DLLReference **loaded_dlls;
653 int nb_loaded_dlls;
654
655 /* include paths */
656 char **include_paths;
657 int nb_include_paths;
658
659 char **sysinclude_paths;
660 int nb_sysinclude_paths;
661
662 /* library paths */
663 char **library_paths;
664 int nb_library_paths;
665
666 /* crt?.o object path */
667 char **crt_paths;
668 int nb_crt_paths;
669
670 /* -include files */
671 char **cmd_include_files;
672 int nb_cmd_include_files;
673
674 /* error handling */
675 void *error_opaque;
676 void (*error_func)(void *opaque, const char *msg);
677 int error_set_jmp_enabled;
678 jmp_buf error_jmp_buf;
679 int nb_errors;
680
681 /* output file for preprocessing (-E) */
682 FILE *ppfp;
683 enum {
684 LINE_MACRO_OUTPUT_FORMAT_GCC,
685 LINE_MACRO_OUTPUT_FORMAT_NONE,
686 LINE_MACRO_OUTPUT_FORMAT_STD
687 } Pflag; /* -P switch */
688 char dflag; /* -dX value */
689
690 /* for -MD/-MF: collected dependencies for this compilation */
691 char **target_deps;
692 int nb_target_deps;
693
694 /* compilation */
695 BufferedFile *include_stack[INCLUDE_STACK_SIZE];
696 BufferedFile **include_stack_ptr;
697
698 int ifdef_stack[IFDEF_STACK_SIZE];
699 int *ifdef_stack_ptr;
700
701 /* included files enclosed with #ifndef MACRO */
702 int cached_includes_hash[CACHED_INCLUDES_HASH_SIZE];
703 CachedInclude **cached_includes;
704 int nb_cached_includes;
705
706 /* #pragma pack stack */
707 int pack_stack[PACK_STACK_SIZE];
708 int *pack_stack_ptr;
709 char **pragma_libs;
710 int nb_pragma_libs;
711
712 /* inline functions are stored as token lists and compiled last
713 only if referenced */
714 struct InlineFunc **inline_fns;
715 int nb_inline_fns;
716
717 /* sections */
718 Section **sections;
719 int nb_sections; /* number of sections, including first dummy section */
720
721 Section **priv_sections;
722 int nb_priv_sections; /* number of private sections */
723
724 /* got & plt handling */
725 Section *got;
726 Section *plt;
727
728 /* temporary dynamic symbol sections (for dll loading) */
729 Section *dynsymtab_section;
730 /* exported dynamic symbol section */
731 Section *dynsym;
732 /* copy of the gobal symtab_section variable */
733 Section *symtab;
734 /* extra attributes (eg. GOT/PLT value) for symtab symbols */
735 struct sym_attr *sym_attrs;
736 int nb_sym_attrs;
737 /* tiny assembler state */
738 Sym *asm_labels;
739
740 #ifdef TCC_TARGET_PE
741 /* PE info */
742 int pe_subsystem;
743 unsigned pe_file_align;
744 unsigned pe_stack_size;
745 # ifdef TCC_TARGET_X86_64
746 Section *uw_pdata;
747 int uw_sym;
748 unsigned uw_offs;
749 # endif
750 #endif
751
752 #ifdef TCC_IS_NATIVE
753 const char *runtime_main;
754 void **runtime_mem;
755 int nb_runtime_mem;
756 #endif
757
758 /* used by main and tcc_parse_args only */
759 struct filespec **files; /* files seen on command line */
760 int nb_files; /* number thereof */
761 int nb_libraries; /* number of libs thereof */
762 int filetype;
763 char *outfile; /* output filename */
764 char *option_m; /* only -m32/-m64 handled */
765 int print_search_dirs; /* option */
766 int option_r; /* option -r */
767 int do_bench; /* option -bench */
768 int gen_deps; /* option -MD */
769 char *deps_outfile; /* option -MF */
770 int option_pthread; /* -pthread option */
771 };
772
773 struct filespec {
774 char type, name[1];
775 };
776
777 /* The current value can be: */
778 #define VT_VALMASK 0x003f /* mask for value location, register or: */
779 #define VT_CONST 0x0030 /* constant in vc (must be first non register value) */
780 #define VT_LLOCAL 0x0031 /* lvalue, offset on stack */
781 #define VT_LOCAL 0x0032 /* offset on stack */
782 #define VT_CMP 0x0033 /* the value is stored in processor flags (in vc) */
783 #define VT_JMP 0x0034 /* value is the consequence of jmp true (even) */
784 #define VT_JMPI 0x0035 /* value is the consequence of jmp false (odd) */
785 #define VT_REF 0x0040 /* value is pointer to structure rather than address */
786 #define VT_LVAL 0x0100 /* var is an lvalue */
787 #define VT_SYM 0x0200 /* a symbol value is added */
788 #define VT_MUSTCAST 0x0400 /* value must be casted to be correct (used for
789 char/short stored in integer registers) */
790 #define VT_MUSTBOUND 0x0800 /* bound checking must be done before
791 dereferencing value */
792 #define VT_BOUNDED 0x8000 /* value is bounded. The address of the
793 bounding function call point is in vc */
794 #define VT_LVAL_BYTE 0x1000 /* lvalue is a byte */
795 #define VT_LVAL_SHORT 0x2000 /* lvalue is a short */
796 #define VT_LVAL_UNSIGNED 0x4000 /* lvalue is unsigned */
797 #define VT_LVAL_TYPE (VT_LVAL_BYTE | VT_LVAL_SHORT | VT_LVAL_UNSIGNED)
798
799 /* types */
800 #define VT_BTYPE 0x000f /* mask for basic type */
801 #define VT_INT 0 /* integer type */
802 #define VT_BYTE 1 /* signed byte type */
803 #define VT_SHORT 2 /* short type */
804 #define VT_VOID 3 /* void type */
805 #define VT_PTR 4 /* pointer */
806 #define VT_ENUM 5 /* enum definition */
807 #define VT_FUNC 6 /* function type */
808 #define VT_STRUCT 7 /* struct/union definition */
809 #define VT_FLOAT 8 /* IEEE float */
810 #define VT_DOUBLE 9 /* IEEE double */
811 #define VT_LDOUBLE 10 /* IEEE long double */
812 #define VT_BOOL 11 /* ISOC99 boolean type */
813 #define VT_LLONG 12 /* 64 bit integer */
814 #define VT_LONG 13 /* long integer (NEVER USED as type, only
815 during parsing) */
816 #define VT_QLONG 14 /* 128-bit integer. Only used for x86-64 ABI */
817 #define VT_QFLOAT 15 /* 128-bit float. Only used for x86-64 ABI */
818 #define VT_UNSIGNED 0x0010 /* unsigned type */
819 #define VT_ARRAY 0x0020 /* array type (also has VT_PTR) */
820 #define VT_BITFIELD 0x0040 /* bitfield modifier */
821 #define VT_CONSTANT 0x0800 /* const modifier */
822 #define VT_VOLATILE 0x1000 /* volatile modifier */
823 #define VT_DEFSIGN 0x2000 /* signed type */
824 #define VT_VLA 0x00020000 /* VLA type (also has VT_PTR and VT_ARRAY) */
825
826 /* storage */
827 #define VT_EXTERN 0x00000080 /* extern definition */
828 #define VT_STATIC 0x00000100 /* static variable */
829 #define VT_TYPEDEF 0x00000200 /* typedef definition */
830 #define VT_INLINE 0x00000400 /* inline definition */
831 #define VT_IMPORT 0x00004000 /* win32: extern data imported from dll */
832 #define VT_EXPORT 0x00008000 /* win32: data exported from dll */
833 #define VT_WEAK 0x00010000 /* weak symbol */
834 #define VT_TLS 0x00040000 /* thread-local storage */
835 #define VT_VIS_SHIFT 19 /* shift for symbol visibility, overlapping
836 bitfield values, because bitfields never
837 have linkage and hence never have
838 visibility. */
839 #define VT_VIS_SIZE 2 /* We have four visibilities. */
840 #define VT_VIS_MASK (((1 << VT_VIS_SIZE)-1) << VT_VIS_SHIFT)
841
842 #define VT_STRUCT_SHIFT 19 /* shift for bitfield shift values (max: 32 - 2*6) */
843
844
845 /* type mask (except storage) */
846 #define VT_STORAGE (VT_EXTERN | VT_STATIC | VT_TYPEDEF | VT_INLINE | VT_IMPORT | VT_EXPORT | VT_WEAK | VT_VIS_MASK)
847 #define VT_TYPE (~(VT_STORAGE))
848
849 /* token values */
850
851 /* warning: the following compare tokens depend on i386 asm code */
852 #define TOK_ULT 0x92
853 #define TOK_UGE 0x93
854 #define TOK_EQ 0x94
855 #define TOK_NE 0x95
856 #define TOK_ULE 0x96
857 #define TOK_UGT 0x97
858 #define TOK_Nset 0x98
859 #define TOK_Nclear 0x99
860 #define TOK_LT 0x9c
861 #define TOK_GE 0x9d
862 #define TOK_LE 0x9e
863 #define TOK_GT 0x9f
864
865 #define TOK_LAND 0xa0
866 #define TOK_LOR 0xa1
867 #define TOK_DEC 0xa2
868 #define TOK_MID 0xa3 /* inc/dec, to void constant */
869 #define TOK_INC 0xa4
870 #define TOK_UDIV 0xb0 /* unsigned division */
871 #define TOK_UMOD 0xb1 /* unsigned modulo */
872 #define TOK_PDIV 0xb2 /* fast division with undefined rounding for pointers */
873
874 /* tokens that carry values (in additional token string space / tokc) --> */
875 #define TOK_CCHAR 0xb3 /* char constant in tokc */
876 #define TOK_LCHAR 0xb4
877 #define TOK_CINT 0xb5 /* number in tokc */
878 #define TOK_CUINT 0xb6 /* unsigned int constant */
879 #define TOK_CLLONG 0xb7 /* long long constant */
880 #define TOK_CULLONG 0xb8 /* unsigned long long constant */
881 #define TOK_STR 0xb9 /* pointer to string in tokc */
882 #define TOK_LSTR 0xba
883 #define TOK_CFLOAT 0xbb /* float constant */
884 #define TOK_CDOUBLE 0xbc /* double constant */
885 #define TOK_CLDOUBLE 0xbd /* long double constant */
886 #define TOK_PPNUM 0xbe /* preprocessor number */
887 #define TOK_PPSTR 0xbf /* preprocessor string */
888 #define TOK_LINENUM 0xc0 /* line number info */
889 /* <-- */
890
891 #define TOK_UMULL 0xc2 /* unsigned 32x32 -> 64 mul */
892 #define TOK_ADDC1 0xc3 /* add with carry generation */
893 #define TOK_ADDC2 0xc4 /* add with carry use */
894 #define TOK_SUBC1 0xc5 /* add with carry generation */
895 #define TOK_SUBC2 0xc6 /* add with carry use */
896 #define TOK_ARROW 0xc7
897 #define TOK_DOTS 0xc8 /* three dots */
898 #define TOK_SHR 0xc9 /* unsigned shift right */
899 #define TOK_TWOSHARPS 0xca /* ## preprocessing token */
900 #define TOK_PLCHLDR 0xcb /* placeholder token as defined in C99 */
901 #define TOK_NOSUBST 0xcc /* means following token has already been pp'd */
902 #define TOK_PPJOIN 0xce /* A '##' in the right position to mean pasting */
903
904 #define TOK_SHL 0x01 /* shift left */
905 #define TOK_SAR 0x02 /* signed shift right */
906
907 /* assignement operators : normal operator or 0x80 */
908 #define TOK_A_MOD 0xa5
909 #define TOK_A_AND 0xa6
910 #define TOK_A_MUL 0xaa
911 #define TOK_A_ADD 0xab
912 #define TOK_A_SUB 0xad
913 #define TOK_A_DIV 0xaf
914 #define TOK_A_XOR 0xde
915 #define TOK_A_OR 0xfc
916 #define TOK_A_SHL 0x81
917 #define TOK_A_SAR 0x82
918
919 #ifndef offsetof
920 #define offsetof(type, field) ((size_t) &((type *)0)->field)
921 #endif
922
923 #ifndef countof
924 #define countof(tab) (sizeof(tab) / sizeof((tab)[0]))
925 #endif
926
927 #define TOK_EOF (-1) /* end of file */
928 #define TOK_LINEFEED 10 /* line feed */
929
930 /* all identificators and strings have token above that */
931 #define TOK_IDENT 256
932
933 #define DEF_ASM(x) DEF(TOK_ASM_ ## x, #x)
934 #define TOK_ASM_int TOK_INT
935 #define DEF_ASMDIR(x) DEF(TOK_ASMDIR_ ## x, "." #x)
936 #define TOK_ASMDIR_FIRST TOK_ASMDIR_byte
937 #define TOK_ASMDIR_LAST TOK_ASMDIR_section
938
939 #if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64
940 /* only used for i386 asm opcodes definitions */
941 #define DEF_BWL(x) \
942 DEF(TOK_ASM_ ## x ## b, #x "b") \
943 DEF(TOK_ASM_ ## x ## w, #x "w") \
944 DEF(TOK_ASM_ ## x ## l, #x "l") \
945 DEF(TOK_ASM_ ## x, #x)
946 #define DEF_WL(x) \
947 DEF(TOK_ASM_ ## x ## w, #x "w") \
948 DEF(TOK_ASM_ ## x ## l, #x "l") \
949 DEF(TOK_ASM_ ## x, #x)
950 #ifdef TCC_TARGET_X86_64
951 # define DEF_BWLQ(x) \
952 DEF(TOK_ASM_ ## x ## b, #x "b") \
953 DEF(TOK_ASM_ ## x ## w, #x "w") \
954 DEF(TOK_ASM_ ## x ## l, #x "l") \
955 DEF(TOK_ASM_ ## x ## q, #x "q") \
956 DEF(TOK_ASM_ ## x, #x)
957 # define DEF_WLQ(x) \
958 DEF(TOK_ASM_ ## x ## w, #x "w") \
959 DEF(TOK_ASM_ ## x ## l, #x "l") \
960 DEF(TOK_ASM_ ## x ## q, #x "q") \
961 DEF(TOK_ASM_ ## x, #x)
962 # define DEF_BWLX DEF_BWLQ
963 # define DEF_WLX DEF_WLQ
964 /* number of sizes + 1 */
965 # define NBWLX 5
966 #else
967 # define DEF_BWLX DEF_BWL
968 # define DEF_WLX DEF_WL
969 /* number of sizes + 1 */
970 # define NBWLX 4
971 #endif
972
973 #define DEF_FP1(x) \
974 DEF(TOK_ASM_ ## f ## x ## s, "f" #x "s") \
975 DEF(TOK_ASM_ ## fi ## x ## l, "fi" #x "l") \
976 DEF(TOK_ASM_ ## f ## x ## l, "f" #x "l") \
977 DEF(TOK_ASM_ ## fi ## x ## s, "fi" #x "s")
978
979 #define DEF_FP(x) \
980 DEF(TOK_ASM_ ## f ## x, "f" #x ) \
981 DEF(TOK_ASM_ ## f ## x ## p, "f" #x "p") \
982 DEF_FP1(x)
983
984 #define DEF_ASMTEST(x,suffix) \
985 DEF_ASM(x ## o ## suffix) \
986 DEF_ASM(x ## no ## suffix) \
987 DEF_ASM(x ## b ## suffix) \
988 DEF_ASM(x ## c ## suffix) \
989 DEF_ASM(x ## nae ## suffix) \
990 DEF_ASM(x ## nb ## suffix) \
991 DEF_ASM(x ## nc ## suffix) \
992 DEF_ASM(x ## ae ## suffix) \
993 DEF_ASM(x ## e ## suffix) \
994 DEF_ASM(x ## z ## suffix) \
995 DEF_ASM(x ## ne ## suffix) \
996 DEF_ASM(x ## nz ## suffix) \
997 DEF_ASM(x ## be ## suffix) \
998 DEF_ASM(x ## na ## suffix) \
999 DEF_ASM(x ## nbe ## suffix) \
1000 DEF_ASM(x ## a ## suffix) \
1001 DEF_ASM(x ## s ## suffix) \
1002 DEF_ASM(x ## ns ## suffix) \
1003 DEF_ASM(x ## p ## suffix) \
1004 DEF_ASM(x ## pe ## suffix) \
1005 DEF_ASM(x ## np ## suffix) \
1006 DEF_ASM(x ## po ## suffix) \
1007 DEF_ASM(x ## l ## suffix) \
1008 DEF_ASM(x ## nge ## suffix) \
1009 DEF_ASM(x ## nl ## suffix) \
1010 DEF_ASM(x ## ge ## suffix) \
1011 DEF_ASM(x ## le ## suffix) \
1012 DEF_ASM(x ## ng ## suffix) \
1013 DEF_ASM(x ## nle ## suffix) \
1014 DEF_ASM(x ## g ## suffix)
1015
1016 #endif /* defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64 */
1017
1018 enum tcc_token {
1019 TOK_LAST = TOK_IDENT - 1
1020 #define DEF(id, str) ,id
1021 #include "tcctok.h"
1022 #undef DEF
1023 };
1024
1025 /* keywords: tok >= TOK_IDENT && tok < TOK_UIDENT */
1026 #define TOK_UIDENT TOK_DEFINE
1027
1028 /* -------------------------------------------- */
1029
1030 #ifndef PUB_FUNC /* functions used by tcc.c but not in libtcc.h */
1031 # define PUB_FUNC
1032 #endif
1033
1034 #ifdef ONE_SOURCE
1035 #define ST_INLN static inline
1036 #define ST_FUNC static
1037 #define ST_DATA static
1038 #else
1039 #define ST_INLN
1040 #define ST_FUNC
1041 #define ST_DATA extern
1042 #endif
1043
1044 #ifdef TCC_PROFILE /* profile all functions */
1045 # define static
1046 #endif
1047
1048 /* ------------ libtcc.c ------------ */
1049
1050 /* use GNU C extensions */
1051 ST_DATA int gnu_ext;
1052 /* use Tiny C extensions */
1053 ST_DATA int tcc_ext;
1054 /* XXX: get rid of this ASAP */
1055 ST_DATA struct TCCState *tcc_state;
1056
1057 /* public functions currently used by the tcc main function */
1058 PUB_FUNC char *pstrcpy(char *buf, int buf_size, const char *s);
1059 PUB_FUNC char *pstrcat(char *buf, int buf_size, const char *s);
1060 PUB_FUNC char *pstrncpy(char *out, const char *in, size_t num);
1061 PUB_FUNC char *tcc_basename(const char *name);
1062 PUB_FUNC char *tcc_fileextension (const char *name);
1063
1064 #ifndef MEM_DEBUG
1065 PUB_FUNC void tcc_free(void *ptr);
1066 PUB_FUNC void *tcc_malloc(unsigned long size);
1067 PUB_FUNC void *tcc_mallocz(unsigned long size);
1068 PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size);
1069 PUB_FUNC char *tcc_strdup(const char *str);
1070 #else
1071 #define tcc_free(ptr) tcc_free_debug(ptr)
1072 #define tcc_malloc(size) tcc_malloc_debug(size, __FILE__, __LINE__)
1073 #define tcc_mallocz(size) tcc_mallocz_debug(size, __FILE__, __LINE__)
1074 #define tcc_realloc(ptr,size) tcc_realloc_debug(ptr, size, __FILE__, __LINE__)
1075 #define tcc_strdup(str) tcc_strdup_debug(str, __FILE__, __LINE__)
1076 PUB_FUNC void tcc_free_debug(void *ptr);
1077 PUB_FUNC void *tcc_malloc_debug(unsigned long size, const char *file, int line);
1078 PUB_FUNC void *tcc_mallocz_debug(unsigned long size, const char *file, int line);
1079 PUB_FUNC void *tcc_realloc_debug(void *ptr, unsigned long size, const char *file, int line);
1080 PUB_FUNC char *tcc_strdup_debug(const char *str, const char *file, int line);
1081 #endif
1082
1083 #define free(p) use_tcc_free(p)
1084 #define malloc(s) use_tcc_malloc(s)
1085 #define realloc(p, s) use_tcc_realloc(p, s)
1086 #undef strdup
1087 #define strdup(s) use_tcc_strdup(s)
1088 PUB_FUNC void tcc_memstats(int bench);
1089 PUB_FUNC void tcc_error_noabort(const char *fmt, ...);
1090 PUB_FUNC NORETURN void tcc_error(const char *fmt, ...);
1091 PUB_FUNC void tcc_warning(const char *fmt, ...);
1092
1093 /* other utilities */
1094 ST_FUNC void dynarray_add(void ***ptab, int *nb_ptr, void *data);
1095 ST_FUNC void dynarray_reset(void *pp, int *n);
1096 ST_INLN void cstr_ccat(CString *cstr, int ch);
1097 ST_FUNC void cstr_cat(CString *cstr, const char *str, int len);
1098 ST_FUNC void cstr_wccat(CString *cstr, int ch);
1099 ST_FUNC void cstr_new(CString *cstr);
1100 ST_FUNC void cstr_free(CString *cstr);
1101 ST_FUNC void cstr_reset(CString *cstr);
1102
1103 ST_INLN void sym_free(Sym *sym);
1104 ST_FUNC Sym *sym_push2(Sym **ps, int v, int t, long c);
1105 ST_FUNC Sym *sym_find2(Sym *s, int v);
1106 ST_FUNC Sym *sym_push(int v, CType *type, int r, long c);
1107 ST_FUNC void sym_pop(Sym **ptop, Sym *b, int keep);
1108 ST_INLN Sym *struct_find(int v);
1109 ST_INLN Sym *sym_find(int v);
1110 ST_FUNC Sym *global_identifier_push(int v, int t, long c);
1111
1112 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen);
1113 ST_FUNC int tcc_open(TCCState *s1, const char *filename);
1114 ST_FUNC void tcc_close(void);
1115
1116 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags);
1117 /* flags: */
1118 #define AFF_PRINT_ERROR 0x10 /* print error if file not found */
1119 #define AFF_REFERENCED_DLL 0x20 /* load a referenced dll from another dll */
1120 #define AFF_PREPROCESS 0x40 /* preprocess file */
1121 /* combined with: */
1122 #define AFF_TYPE_NONE 0
1123 #define AFF_TYPE_C 1
1124 #define AFF_TYPE_ASM 2
1125 #define AFF_TYPE_ASMPP 3
1126 #define AFF_TYPE_BIN 4
1127 #define AFF_TYPE_LIB 5
1128 #define AFF_TYPE_LIBWH 6
1129 /* values from tcc_object_type(...) */
1130 #define AFF_BINTYPE_REL 1
1131 #define AFF_BINTYPE_DYN 2
1132 #define AFF_BINTYPE_AR 3
1133 #define AFF_BINTYPE_C67 4
1134
1135
1136 ST_FUNC int tcc_add_crt(TCCState *s, const char *filename);
1137
1138 #ifndef TCC_TARGET_PE
1139 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags);
1140 #endif
1141
1142 ST_FUNC void tcc_add_pragma_libs(TCCState *s1);
1143 PUB_FUNC int tcc_add_library_err(TCCState *s, const char *f);
1144
1145 PUB_FUNC void tcc_print_stats(TCCState *s, unsigned total_time);
1146 PUB_FUNC int tcc_parse_args(TCCState *s, int argc, char **argv);
1147 PUB_FUNC void tcc_set_environment(TCCState *s);
1148 #ifdef _WIN32
1149 ST_FUNC char *normalize_slashes(char *path);
1150 #endif
1151
1152 /* ------------ tccpp.c ------------ */
1153
1154 ST_DATA struct BufferedFile *file;
1155 ST_DATA int ch, tok;
1156 ST_DATA CValue tokc;
1157 ST_DATA const int *macro_ptr;
1158 ST_DATA int parse_flags;
1159 ST_DATA int tok_flags;
1160 ST_DATA CString tokcstr; /* current parsed string, if any */
1161
1162 /* display benchmark infos */
1163 ST_DATA int total_lines;
1164 ST_DATA int total_bytes;
1165 ST_DATA int tok_ident;
1166 ST_DATA TokenSym **table_ident;
1167
1168 #define TOK_FLAG_BOL 0x0001 /* beginning of line before */
1169 #define TOK_FLAG_BOF 0x0002 /* beginning of file before */
1170 #define TOK_FLAG_ENDIF 0x0004 /* a endif was found matching starting #ifdef */
1171 #define TOK_FLAG_EOF 0x0008 /* end of file */
1172
1173 #define PARSE_FLAG_PREPROCESS 0x0001 /* activate preprocessing */
1174 #define PARSE_FLAG_TOK_NUM 0x0002 /* return numbers instead of TOK_PPNUM */
1175 #define PARSE_FLAG_LINEFEED 0x0004 /* line feed is returned as a
1176 token. line feed is also
1177 returned at eof */
1178 #define PARSE_FLAG_ASM_FILE 0x0008 /* we processing an asm file: '#' can be used for line comment, etc. */
1179 #define PARSE_FLAG_SPACES 0x0010 /* next() returns space tokens (for -E) */
1180 #define PARSE_FLAG_ACCEPT_STRAYS 0x0020 /* next() returns '\\' token */
1181 #define PARSE_FLAG_TOK_STR 0x0040 /* return parsed strings instead of TOK_PPSTR */
1182
1183 /* isidnum_table flags: */
1184 #define IS_SPC 1
1185 #define IS_ID 2
1186 #define IS_NUM 4
1187
1188 ST_FUNC TokenSym *tok_alloc(const char *str, int len);
1189 ST_FUNC const char *get_tok_str(int v, CValue *cv);
1190 ST_FUNC void begin_macro(TokenString *str, int alloc);
1191 ST_FUNC void end_macro(void);
1192 ST_FUNC void set_idnum(int c, int val);
1193 ST_FUNC void save_parse_state(ParseState *s);
1194 ST_FUNC void restore_parse_state(ParseState *s);
1195 ST_INLN void tok_str_new(TokenString *s);
1196 ST_FUNC TokenString *tok_str_alloc(void);
1197 ST_FUNC void tok_str_free(TokenString *s);
1198 ST_FUNC void tok_str_free_str(int *str);
1199 ST_FUNC void tok_str_add(TokenString *s, int t);
1200 ST_FUNC void tok_str_add_tok(TokenString *s);
1201 ST_INLN void define_push(int v, int macro_type, int *str, Sym *first_arg);
1202 ST_FUNC void define_undef(Sym *s);
1203 ST_INLN Sym *define_find(int v);
1204 ST_FUNC void free_defines(Sym *b);
1205 ST_FUNC Sym *label_find(int v);
1206 ST_FUNC Sym *label_push(Sym **ptop, int v, int flags);
1207 ST_FUNC void label_pop(Sym **ptop, Sym *slast);
1208 ST_FUNC void parse_define(void);
1209 ST_FUNC void preprocess(int is_bof);
1210 ST_FUNC void next_nomacro(void);
1211 ST_FUNC void next(void);
1212 ST_INLN void unget_tok(int last_tok);
1213 ST_FUNC void preprocess_start(TCCState *s1);
1214 ST_FUNC void tccpp_new(TCCState *s);
1215 ST_FUNC void tccpp_delete(TCCState *s);
1216 ST_FUNC int tcc_preprocess(TCCState *s1);
1217 ST_FUNC void skip(int c);
1218 ST_FUNC NORETURN void expect(const char *msg);
1219
1220 /* space exlcuding newline */
1221 static inline int is_space(int ch) {
1222 return ch == ' ' || ch == '\t' || ch == '\v' || ch == '\f' || ch == '\r';
1223 }
1224 static inline int isid(int c) {
1225 return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_';
1226 }
1227 static inline int isnum(int c) {
1228 return c >= '0' && c <= '9';
1229 }
1230 static inline int isoct(int c) {
1231 return c >= '0' && c <= '7';
1232 }
1233 static inline int toup(int c) {
1234 return (c >= 'a' && c <= 'z') ? c - 'a' + 'A' : c;
1235 }
1236
1237 /* ------------ tccgen.c ------------ */
1238
1239 #define SYM_POOL_NB (8192 / sizeof(Sym))
1240 ST_DATA Sym *sym_free_first;
1241 ST_DATA void **sym_pools;
1242 ST_DATA int nb_sym_pools;
1243
1244 ST_DATA Sym *global_stack;
1245 ST_DATA Sym *local_stack;
1246 ST_DATA Sym *local_label_stack;
1247 ST_DATA Sym *global_label_stack;
1248 ST_DATA Sym *define_stack;
1249 ST_DATA CType char_pointer_type, func_old_type, int_type, size_type;
1250 ST_DATA SValue __vstack[1+/*to make bcheck happy*/ VSTACK_SIZE], *vtop, *pvtop;
1251 #define vstack (__vstack + 1)
1252 ST_DATA int rsym, anon_sym, ind, loc;
1253
1254 ST_DATA int const_wanted; /* true if constant wanted */
1255 ST_DATA int nocode_wanted; /* true if no code generation wanted for an expression */
1256 ST_DATA int global_expr; /* true if compound literals must be allocated globally (used during initializers parsing */
1257 ST_DATA CType func_vt; /* current function return type (used by return instruction) */
1258 ST_DATA int func_var; /* true if current function is variadic */
1259 ST_DATA int func_vc;
1260 ST_DATA int last_line_num, last_ind, func_ind; /* debug last line number and pc */
1261 ST_DATA const char *funcname;
1262
1263 ST_FUNC void tccgen_start(TCCState *s1);
1264 ST_FUNC void tccgen_end(TCCState *s1);
1265 ST_FUNC void free_inline_functions(TCCState *s);
1266 ST_FUNC void check_vstack(void);
1267
1268 ST_INLN int is_float(int t);
1269 ST_FUNC int ieee_finite(double d);
1270 ST_FUNC void test_lvalue(void);
1271 ST_FUNC void swap(int *p, int *q);
1272 ST_FUNC void vpushi(int v);
1273 ST_FUNC Sym *external_global_sym(int v, CType *type, int r);
1274 ST_FUNC void vset(CType *type, int r, long v);
1275 ST_FUNC void vswap(void);
1276 ST_FUNC void vpush_global_sym(CType *type, int v);
1277 ST_FUNC void vrote(SValue *e, int n);
1278 ST_FUNC void vrott(int n);
1279 ST_FUNC void vrotb(int n);
1280 #ifdef TCC_TARGET_ARM
1281 ST_FUNC int get_reg_ex(int rc, int rc2);
1282 ST_FUNC void lexpand_nr(void);
1283 #endif
1284 ST_FUNC void vpushv(SValue *v);
1285 ST_FUNC void save_reg(int r);
1286 ST_FUNC void save_reg_upstack(int r, int n);
1287 ST_FUNC int get_reg(int rc);
1288 ST_FUNC void save_regs(int n);
1289 ST_FUNC void gaddrof(void);
1290 ST_FUNC int gv(int rc);
1291 ST_FUNC void gv2(int rc1, int rc2);
1292 ST_FUNC void vpop(void);
1293 ST_FUNC void gen_op(int op);
1294 ST_FUNC int type_size(CType *type, int *a);
1295 ST_FUNC void mk_pointer(CType *type);
1296 ST_FUNC void vstore(void);
1297 ST_FUNC void inc(int post, int c);
1298 ST_FUNC void parse_mult_str (CString *astr, const char *msg);
1299 ST_FUNC void parse_asm_str(CString *astr);
1300 ST_FUNC int lvalue_type(int t);
1301 ST_FUNC void indir(void);
1302 ST_FUNC void unary(void);
1303 ST_FUNC void expr_prod(void);
1304 ST_FUNC void expr_sum(void);
1305 ST_FUNC void gexpr(void);
1306 ST_FUNC int expr_const(void);
1307 ST_FUNC void decl(int l);
1308 #if defined CONFIG_TCC_BCHECK || defined TCC_TARGET_C67
1309 ST_FUNC Sym *get_sym_ref(CType *type, Section *sec, unsigned long offset, unsigned long size);
1310 #endif
1311 #if defined TCC_TARGET_X86_64 && !defined TCC_TARGET_PE
1312 ST_FUNC int classify_x86_64_va_arg(CType *ty);
1313 #endif
1314
1315 /* ------------ tccelf.c ------------ */
1316
1317 #define TCC_OUTPUT_FORMAT_ELF 0 /* default output format: ELF */
1318 #define TCC_OUTPUT_FORMAT_BINARY 1 /* binary image output */
1319 #define TCC_OUTPUT_FORMAT_COFF 2 /* COFF */
1320
1321 #define ARMAG "!<arch>\012" /* For COFF and a.out archives */
1322
1323 typedef struct {
1324 unsigned int n_strx; /* index into string table of name */
1325 unsigned char n_type; /* type of symbol */
1326 unsigned char n_other; /* misc info (usually empty) */
1327 unsigned short n_desc; /* description field */
1328 unsigned int n_value; /* value of symbol */
1329 } Stab_Sym;
1330
1331 ST_DATA Section *text_section, *data_section, *bss_section; /* predefined sections */
1332 ST_DATA Section *cur_text_section; /* current section where function code is generated */
1333 #ifdef CONFIG_TCC_ASM
1334 ST_DATA Section *last_text_section; /* to handle .previous asm directive */
1335 #endif
1336 #ifdef CONFIG_TCC_BCHECK
1337 /* bound check related sections */
1338 ST_DATA Section *bounds_section; /* contains global data bound description */
1339 ST_DATA Section *lbounds_section; /* contains local data bound description */
1340 ST_FUNC void tccelf_bounds_new(TCCState *s);
1341 #endif
1342 /* symbol sections */
1343 ST_DATA Section *symtab_section, *strtab_section;
1344 /* debug sections */
1345 ST_DATA Section *stab_section, *stabstr_section;
1346
1347 ST_FUNC void tccelf_new(TCCState *s);
1348 ST_FUNC void tccelf_delete(TCCState *s);
1349 ST_FUNC void tccelf_stab_new(TCCState *s);
1350
1351 ST_FUNC Section *new_section(TCCState *s1, const char *name, int sh_type, int sh_flags);
1352 ST_FUNC void section_realloc(Section *sec, unsigned long new_size);
1353 ST_FUNC void *section_ptr_add(Section *sec, addr_t size);
1354 ST_FUNC void section_reserve(Section *sec, unsigned long size);
1355 ST_FUNC Section *find_section(TCCState *s1, const char *name);
1356 ST_FUNC Section *new_symtab(TCCState *s1, const char *symtab_name, int sh_type, int sh_flags, const char *strtab_name, const char *hash_name, int hash_sh_flags);
1357
1358 ST_FUNC void put_extern_sym2(Sym *sym, Section *section, addr_t value, unsigned long size, int can_add_underscore);
1359 ST_FUNC void put_extern_sym(Sym *sym, Section *section, addr_t value, unsigned long size);
1360 ST_FUNC void greloc(Section *s, Sym *sym, unsigned long offset, int type);
1361 ST_FUNC void greloca(Section *s, Sym *sym, unsigned long offset, int type, addr_t addend);
1362
1363 ST_FUNC int put_elf_str(Section *s, const char *sym);
1364 ST_FUNC int put_elf_sym(Section *s, addr_t value, unsigned long size, int info, int other, int shndx, const char *name);
1365 ST_FUNC int set_elf_sym(Section *s, addr_t value, unsigned long size, int info, int other, int shndx, const char *name);
1366 ST_FUNC int find_elf_sym(Section *s, const char *name);
1367 ST_FUNC void put_elf_reloc(Section *symtab, Section *s, unsigned long offset, int type, int symbol);
1368 ST_FUNC void put_elf_reloca(Section *symtab, Section *s, unsigned long offset, int type, int symbol, addr_t addend);
1369
1370 ST_FUNC void put_stabs(const char *str, int type, int other, int desc, unsigned long value);
1371 ST_FUNC void put_stabs_r(const char *str, int type, int other, int desc, unsigned long value, Section *sec, int sym_index);
1372 ST_FUNC void put_stabn(int type, int other, int desc, int value);
1373 ST_FUNC void put_stabd(int type, int other, int desc);
1374
1375 ST_FUNC void relocate_common_syms(void);
1376 ST_FUNC void relocate_syms(TCCState *s1, Section *symtab, int do_resolve);
1377 ST_FUNC void relocate_section(TCCState *s1, Section *s);
1378
1379 ST_FUNC void tcc_add_linker_symbols(TCCState *s1);
1380 ST_FUNC int tcc_object_type(int fd, ElfW(Ehdr) *h);
1381 ST_FUNC int tcc_load_object_file(TCCState *s1, int fd, unsigned long file_offset);
1382 ST_FUNC int tcc_load_archive(TCCState *s1, int fd);
1383 ST_FUNC void tcc_add_bcheck(TCCState *s1);
1384 ST_FUNC void tcc_add_runtime(TCCState *s1);
1385
1386 ST_FUNC void build_got_entries(TCCState *s1);
1387 ST_FUNC struct sym_attr *get_sym_attr(TCCState *s1, int index, int alloc);
1388 ST_FUNC void squeeze_multi_relocs(Section *sec, size_t oldrelocoffset);
1389
1390 ST_FUNC addr_t get_elf_sym_addr(TCCState *s, const char *name, int err);
1391 #if defined TCC_IS_NATIVE || defined TCC_TARGET_PE
1392 ST_FUNC void *tcc_get_symbol_err(TCCState *s, const char *name);
1393 #endif
1394
1395 #ifndef TCC_TARGET_PE
1396 ST_FUNC int tcc_load_dll(TCCState *s1, int fd, const char *filename, int level);
1397 ST_FUNC int tcc_load_ldscript(TCCState *s1);
1398 ST_FUNC uint8_t *parse_comment(uint8_t *p);
1399 ST_FUNC void minp(void);
1400 ST_INLN void inp(void);
1401 ST_FUNC int handle_eob(void);
1402 #endif
1403
1404 /* ------------ xxx-link.c ------------ */
1405
1406 /* Wether to generate a GOT/PLT entry and when. NO_GOTPLT_ENTRY is first so
1407 that unknown relocation don't create a GOT or PLT entry */
1408 enum gotplt_entry {
1409 NO_GOTPLT_ENTRY, /* never generate (eg. GLOB_DAT & JMP_SLOT relocs) */
1410 BUILD_GOT_ONLY, /* only build GOT (eg. TPOFF relocs) */
1411 AUTO_GOTPLT_ENTRY, /* generate if sym is UNDEF */
1412 ALWAYS_GOTPLT_ENTRY /* always generate (eg. PLTOFF relocs) */
1413 };
1414
1415 ST_FUNC int code_reloc (int reloc_type);
1416 ST_FUNC int gotplt_entry_type (int reloc_type);
1417 ST_FUNC unsigned create_plt_entry(TCCState *s1, unsigned got_offset, struct sym_attr *attr);
1418 ST_FUNC void relocate_init(Section *sr);
1419 ST_FUNC void relocate(TCCState *s1, ElfW_Rel *rel, int type, char *ptr, addr_t addr, addr_t val);
1420 ST_FUNC void relocate_plt(TCCState *s1);
1421
1422 /* ------------ xxx-gen.c ------------ */
1423
1424 ST_DATA const int reg_classes[NB_REGS];
1425
1426 ST_FUNC void gsym_addr(int t, int a);
1427 ST_FUNC void gsym(int t);
1428 ST_FUNC void load(int r, SValue *sv);
1429 ST_FUNC void store(int r, SValue *v);
1430 ST_FUNC int gfunc_sret(CType *vt, int variadic, CType *ret, int *align, int *regsize);
1431 ST_FUNC void gfunc_call(int nb_args);
1432 ST_FUNC void gfunc_prolog(CType *func_type);
1433 ST_FUNC void gfunc_epilog(void);
1434 ST_FUNC int gjmp(int t);
1435 ST_FUNC void gjmp_addr(int a);
1436 ST_FUNC int gtst(int inv, int t);
1437 #if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64
1438 ST_FUNC void gtst_addr(int inv, int a);
1439 #else
1440 #define gtst_addr(inv, a) gsym_addr(gtst(inv, 0), a)
1441 #endif
1442 ST_FUNC void gen_opi(int op);
1443 ST_FUNC void gen_opf(int op);
1444 ST_FUNC void gen_cvt_ftoi(int t);
1445 ST_FUNC void gen_cvt_ftof(int t);
1446 ST_FUNC void ggoto(void);
1447 #ifndef TCC_TARGET_C67
1448 ST_FUNC void o(unsigned int c);
1449 #endif
1450 #ifndef TCC_TARGET_ARM
1451 ST_FUNC void gen_cvt_itof(int t);
1452 #endif
1453 ST_FUNC void gen_vla_sp_save(int addr);
1454 ST_FUNC void gen_vla_sp_restore(int addr);
1455 ST_FUNC void gen_vla_alloc(CType *type, int align);
1456
1457 static inline uint16_t read16le(unsigned char *p) {
1458 return p[0] | (uint16_t)p[1] << 8;
1459 }
1460 static inline void write16le(unsigned char *p, uint16_t x) {
1461 p[0] = x & 255, p[1] = x >> 8 & 255;
1462 }
1463 static inline uint32_t read32le(unsigned char *p) {
1464 return read16le(p) | (uint32_t)read16le(p + 2) << 16;
1465 }
1466 static inline void write32le(unsigned char *p, uint32_t x) {
1467 write16le(p, x), write16le(p + 2, x >> 16);
1468 }
1469 static inline void add32le(unsigned char *p, int32_t x) {
1470 write32le(p, read32le(p) + x);
1471 }
1472 static inline uint64_t read64le(unsigned char *p) {
1473 return read32le(p) | (uint64_t)read32le(p + 4) << 32;
1474 }
1475 static inline void write64le(unsigned char *p, uint64_t x) {
1476 write32le(p, x), write32le(p + 4, x >> 32);
1477 }
1478 static inline void add64le(unsigned char *p, int64_t x) {
1479 write64le(p, read64le(p) + x);
1480 }
1481
1482 /* ------------ i386-gen.c ------------ */
1483 #if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64
1484 ST_FUNC void g(int c);
1485 ST_FUNC int oad(int c, int s);
1486 ST_FUNC void gen_le16(int c);
1487 ST_FUNC void gen_le32(int c);
1488 ST_FUNC void gen_addr32(int r, Sym *sym, long c);
1489 ST_FUNC void gen_addrpc32(int r, Sym *sym, long c);
1490 #endif
1491
1492 #ifdef CONFIG_TCC_BCHECK
1493 ST_FUNC void gen_bounded_ptr_add(void);
1494 ST_FUNC void gen_bounded_ptr_deref(void);
1495 #endif
1496
1497 /* ------------ x86_64-gen.c ------------ */
1498 #ifdef TCC_TARGET_X86_64
1499 ST_FUNC void gen_addr64(int r, Sym *sym, int64_t c);
1500 ST_FUNC void gen_opl(int op);
1501 #endif
1502
1503 /* ------------ arm-gen.c ------------ */
1504 #ifdef TCC_TARGET_ARM
1505 #if defined(TCC_ARM_EABI) && !defined(CONFIG_TCC_ELFINTERP)
1506 ST_FUNC char *default_elfinterp(struct TCCState *s);
1507 #endif
1508 ST_FUNC void arm_init(struct TCCState *s);
1509 ST_FUNC uint32_t encbranch(int pos, int addr, int fail);
1510 ST_FUNC void gen_cvt_itof1(int t);
1511 #endif
1512
1513 /* ------------ arm64-gen.c ------------ */
1514 #ifdef TCC_TARGET_ARM64
1515 ST_FUNC void gen_cvt_sxtw(void);
1516 ST_FUNC void gen_opl(int op);
1517 ST_FUNC void greturn(void);
1518 ST_FUNC void gen_va_start(void);
1519 ST_FUNC void gen_va_arg(CType *t);
1520 ST_FUNC void gen_clear_cache(void);
1521 #endif
1522
1523 /* ------------ c67-gen.c ------------ */
1524 #ifdef TCC_TARGET_C67
1525 #endif
1526
1527 /* ------------ tcccoff.c ------------ */
1528
1529 #ifdef TCC_TARGET_COFF
1530 ST_FUNC int tcc_output_coff(TCCState *s1, FILE *f);
1531 ST_FUNC int tcc_load_coff(TCCState * s1, int fd);
1532 #endif
1533
1534 /* ------------ tccasm.c ------------ */
1535 ST_FUNC void asm_instr(void);
1536 ST_FUNC void asm_global_instr(void);
1537 #ifdef CONFIG_TCC_ASM
1538 ST_FUNC int find_constraint(ASMOperand *operands, int nb_operands, const char *name, const char **pp);
1539 ST_FUNC Sym* get_asm_sym(int name, Sym *csym);
1540 ST_FUNC void asm_expr(TCCState *s1, ExprValue *pe);
1541 ST_FUNC int asm_int_expr(TCCState *s1);
1542 ST_FUNC int tcc_assemble(TCCState *s1, int do_preprocess);
1543 /* ------------ i386-asm.c ------------ */
1544 ST_FUNC void gen_expr32(ExprValue *pe);
1545 #ifdef TCC_TARGET_X86_64
1546 ST_FUNC void gen_expr64(ExprValue *pe);
1547 #endif
1548 ST_FUNC void asm_opcode(TCCState *s1, int opcode);
1549 ST_FUNC int asm_parse_regvar(int t);
1550 ST_FUNC void asm_compute_constraints(ASMOperand *operands, int nb_operands, int nb_outputs, const uint8_t *clobber_regs, int *pout_reg);
1551 ST_FUNC void subst_asm_operand(CString *add_str, SValue *sv, int modifier);
1552 ST_FUNC void asm_gen_code(ASMOperand *operands, int nb_operands, int nb_outputs, int is_output, uint8_t *clobber_regs, int out_reg);
1553 ST_FUNC void asm_clobber(uint8_t *clobber_regs, const char *str);
1554 #endif
1555
1556 /* ------------ tccpe.c -------------- */
1557 #ifdef TCC_TARGET_PE
1558 ST_FUNC int pe_load_file(struct TCCState *s1, const char *filename, int fd);
1559 ST_FUNC int pe_output_file(TCCState * s1, const char *filename);
1560 ST_FUNC int pe_putimport(TCCState *s1, int dllindex, const char *name, addr_t value);
1561 #ifndef TCC_TARGET_ARM
1562 ST_FUNC SValue *pe_getimport(SValue *sv, SValue *v2);
1563 #endif
1564 #ifdef TCC_TARGET_X86_64
1565 ST_FUNC void pe_add_unwind_data(unsigned start, unsigned end, unsigned stack);
1566 #endif
1567 /* symbol properties stored in Elf32_Sym->st_other */
1568 # define ST_PE_EXPORT 0x10
1569 # define ST_PE_IMPORT 0x20
1570 # define ST_PE_STDCALL 0x40
1571 #endif
1572
1573 /* ------------ tccrun.c ----------------- */
1574 #ifdef TCC_IS_NATIVE
1575 #ifdef CONFIG_TCC_STATIC
1576 #define RTLD_LAZY 0x001
1577 #define RTLD_NOW 0x002
1578 #define RTLD_GLOBAL 0x100
1579 #define RTLD_DEFAULT NULL
1580 /* dummy function for profiling */
1581 ST_FUNC void *dlopen(const char *filename, int flag);
1582 ST_FUNC void dlclose(void *p);
1583 ST_FUNC const char *dlerror(void);
1584 ST_FUNC void *dlsym(void *handle, const char *symbol);
1585 #endif
1586 #ifdef CONFIG_TCC_BACKTRACE
1587 ST_DATA int rt_num_callers;
1588 ST_DATA const char **rt_bound_error_msg;
1589 ST_DATA void *rt_prog_main;
1590 ST_FUNC void tcc_set_num_callers(int n);
1591 #endif
1592 ST_FUNC void tcc_run_free(TCCState *s1);
1593 #endif
1594
1595 /********************************************************/
1596 #undef ST_DATA
1597 #ifdef ONE_SOURCE
1598 #define ST_DATA static
1599 #else
1600 #define ST_DATA
1601 #endif
1602 /********************************************************/
1603 #endif /* _TCC_H */
Tiny C Compiler main repository