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fix UB in constant folding of double -> signed integer conversion
[tinycc.git] / tcc.h
blob7bae6affe9206ed1c72b7edc022e18dff3a61417
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 #define _DARWIN_C_SOURCE
26 #include "config.h"
27
28 #include <stdarg.h>
29 #include <stdlib.h>
30 #include <stdio.h>
31 /* gnu headers use to #define __attribute__ to empty for non-gcc compilers */
32 #ifdef __TINYC__
33 # undef __attribute__
34 #endif
35 #include <string.h>
36 #include <errno.h>
37 #include <math.h>
38 #include <fcntl.h>
39 #include <setjmp.h>
40 #include <time.h>
41
42 #ifndef _WIN32
43 # include <unistd.h>
44 # include <sys/time.h>
45 # ifndef CONFIG_TCC_STATIC
46 # include <dlfcn.h>
47 # endif
48 /* XXX: need to define this to use them in non ISOC99 context */
49 extern float strtof (const char *__nptr, char **__endptr);
50 extern long double strtold (const char *__nptr, char **__endptr);
51 #endif
52
53 #ifdef _WIN32
54 # define WIN32_LEAN_AND_MEAN 1
55 # include <windows.h>
56 # include <io.h> /* open, close etc. */
57 # include <direct.h> /* getcwd */
58 # include <malloc.h> /* alloca */
59 # ifdef __GNUC__
60 # include <stdint.h>
61 # endif
62 # define inline __inline
63 # define snprintf _snprintf
64 # define vsnprintf _vsnprintf
65 # ifndef __GNUC__
66 # define strtold (long double)strtod
67 # define strtof (float)strtod
68 # define strtoll _strtoi64
69 # define strtoull _strtoui64
70 # endif
71 # ifdef LIBTCC_AS_DLL
72 # define LIBTCCAPI __declspec(dllexport)
73 # define PUB_FUNC LIBTCCAPI
74 # endif
75 # ifdef _MSC_VER
76 # pragma warning (disable : 4244) // conversion from 'uint64_t' to 'int', possible loss of data
77 # pragma warning (disable : 4267) // conversion from 'size_t' to 'int', possible loss of data
78 # pragma warning (disable : 4996) // The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name
79 # pragma warning (disable : 4018) // signed/unsigned mismatch
80 # pragma warning (disable : 4146) // unary minus operator applied to unsigned type, result still unsigned
81 # define ssize_t intptr_t
82 # ifdef _X86_
83 # define __i386__ 1
84 # endif
85 # ifdef _AMD64_
86 # define __x86_64__ 1
87 # endif
88 # endif
89 # ifndef va_copy
90 # define va_copy(a,b) a = b
91 # endif
92 #endif
93
94 #ifndef O_BINARY
95 # define O_BINARY 0
96 #endif
97
98 #ifndef offsetof
99 #define offsetof(type, field) ((size_t) &((type *)0)->field)
100 #endif
101
102 #ifndef countof
103 #define countof(tab) (sizeof(tab) / sizeof((tab)[0]))
104 #endif
105
106 #ifdef _MSC_VER
107 # define NORETURN __declspec(noreturn)
108 # define ALIGNED(x) __declspec(align(x))
109 # define PRINTF_LIKE(x,y)
110 #else
111 # define NORETURN __attribute__((noreturn))
112 # define ALIGNED(x) __attribute__((aligned(x)))
113 # define PRINTF_LIKE(x,y) __attribute__ ((format (printf, (x), (y))))
114 #endif
115
116 #ifdef _WIN32
117 # define IS_DIRSEP(c) (c == '/' || c == '\\')
118 # define IS_ABSPATH(p) (IS_DIRSEP(p[0]) || (p[0] && p[1] == ':' && IS_DIRSEP(p[2])))
119 # define PATHCMP stricmp
120 # define PATHSEP ";"
121 #else
122 # define IS_DIRSEP(c) (c == '/')
123 # define IS_ABSPATH(p) IS_DIRSEP(p[0])
124 # define PATHCMP strcmp
125 # define PATHSEP ":"
126 #endif
127
128 /* -------------------------------------------- */
129
130 /* parser debug */
131 /* #define PARSE_DEBUG */
132 /* preprocessor debug */
133 /* #define PP_DEBUG */
134 /* include file debug */
135 /* #define INC_DEBUG */
136 /* memory leak debug (only for single threaded usage) */
137 /* #define MEM_DEBUG 1,2,3 */
138 /* assembler debug */
139 /* #define ASM_DEBUG */
140
141 /* target selection */
142 /* #define TCC_TARGET_I386 *//* i386 code generator */
143 /* #define TCC_TARGET_X86_64 *//* x86-64 code generator */
144 /* #define TCC_TARGET_ARM *//* ARMv4 code generator */
145 /* #define TCC_TARGET_ARM64 *//* ARMv8 code generator */
146 /* #define TCC_TARGET_C67 *//* TMS320C67xx code generator */
147 /* #define TCC_TARGET_RISCV64 *//* risc-v code generator */
148
149 /* default target is I386 */
150 #if !defined(TCC_TARGET_I386) && !defined(TCC_TARGET_ARM) && \
151 !defined(TCC_TARGET_ARM64) && !defined(TCC_TARGET_C67) && \
152 !defined(TCC_TARGET_X86_64) && !defined(TCC_TARGET_RISCV64)
153 # if defined __x86_64__
154 # define TCC_TARGET_X86_64
155 # elif defined __arm__
156 # define TCC_TARGET_ARM
157 # define TCC_ARM_EABI
158 # define TCC_ARM_VFP
159 # define TCC_ARM_HARDFLOAT
160 # elif defined __aarch64__
161 # define TCC_TARGET_ARM64
162 # elif defined __riscv
163 # define TCC_TARGET_RISCV64
164 # else
165 # define TCC_TARGET_I386
166 # endif
167 # ifdef _WIN32
168 # define TCC_TARGET_PE 1
169 # endif
170 # ifdef __APPLE__
171 # define TCC_TARGET_MACHO 1
172 # endif
173 #endif
174
175 /* only native compiler supports -run */
176 #if defined _WIN32 == defined TCC_TARGET_PE \
177 && defined __APPLE__ == defined TCC_TARGET_MACHO
178 # if defined __i386__ && defined TCC_TARGET_I386
179 # define TCC_IS_NATIVE
180 # elif defined __x86_64__ && defined TCC_TARGET_X86_64
181 # define TCC_IS_NATIVE
182 # elif defined __arm__ && defined TCC_TARGET_ARM
183 # define TCC_IS_NATIVE
184 # elif defined __aarch64__ && defined TCC_TARGET_ARM64
185 # define TCC_IS_NATIVE
186 # elif defined __riscv && defined __LP64__ && defined TCC_TARGET_RISCV64
187 # define TCC_IS_NATIVE
188 # endif
189 #endif
190
191 #if defined CONFIG_TCC_BACKTRACE && CONFIG_TCC_BACKTRACE==0
192 # undef CONFIG_TCC_BACKTRACE
193 #else
194 # define CONFIG_TCC_BACKTRACE 1 /* enable builtin stack backtraces */
195 #endif
196
197 #if defined CONFIG_TCC_BCHECK && CONFIG_TCC_BCHECK==0
198 # undef CONFIG_TCC_BCHECK
199 #else
200 # define CONFIG_TCC_BCHECK 1 /* enable bound checking code */
201 #endif
202
203 #if defined CONFIG_NEW_MACHO && CONFIG_NEW_MACHO==0
204 # undef CONFIG_NEW_MACHO
205 #else
206 # define CONFIG_NEW_MACHO 1 /* enable new macho code */
207 #endif
208
209 #if defined TARGETOS_OpenBSD \
210 || defined TARGETOS_FreeBSD \
211 || defined TARGETOS_NetBSD \
212 || defined TARGETOS_FreeBSD_kernel
213 # define TARGETOS_BSD 1
214 #elif !(defined TCC_TARGET_PE || defined TCC_TARGET_MACHO)
215 # define TARGETOS_Linux 1
216 #endif
217
218 #if defined TCC_TARGET_PE || defined TCC_TARGET_MACHO
219 # define ELF_OBJ_ONLY /* create elf .o but native executables */
220 #endif
221
222 /* No ten-byte long doubles on window and macos except in
223 cross-compilers made by a mingw-GCC */
224 #if defined TCC_TARGET_PE \
225 || (defined TCC_TARGET_MACHO && defined TCC_TARGET_ARM64) \
226 || (defined _WIN32 && !defined __GNUC__)
227 # define TCC_USING_DOUBLE_FOR_LDOUBLE 1
228 #endif
229
230 #ifdef CONFIG_TCC_PIE
231 # define CONFIG_TCC_PIC 1
232 #endif
233
234 /* ------------ path configuration ------------ */
235
236 #ifndef CONFIG_SYSROOT
237 # define CONFIG_SYSROOT ""
238 #endif
239 #if !defined CONFIG_TCCDIR && !defined _WIN32
240 # define CONFIG_TCCDIR "/usr/local/lib/tcc"
241 #endif
242 #ifndef CONFIG_LDDIR
243 # define CONFIG_LDDIR "lib"
244 #endif
245 #ifdef CONFIG_TRIPLET
246 # define USE_TRIPLET(s) s "/" CONFIG_TRIPLET
247 # define ALSO_TRIPLET(s) USE_TRIPLET(s) ":" s
248 #else
249 # define USE_TRIPLET(s) s
250 # define ALSO_TRIPLET(s) s
251 #endif
252
253 /* path to find crt1.o, crti.o and crtn.o */
254 #ifndef CONFIG_TCC_CRTPREFIX
255 # define CONFIG_TCC_CRTPREFIX USE_TRIPLET(CONFIG_SYSROOT "/usr/" CONFIG_LDDIR)
256 #endif
257
258 #ifndef CONFIG_USR_INCLUDE
259 # define CONFIG_USR_INCLUDE "/usr/include"
260 #endif
261
262 /* Below: {B} is substituted by CONFIG_TCCDIR (rsp. -B option) */
263
264 /* system include paths */
265 #ifndef CONFIG_TCC_SYSINCLUDEPATHS
266 # if defined TCC_TARGET_PE || defined _WIN32
267 # define CONFIG_TCC_SYSINCLUDEPATHS "{B}/include"PATHSEP"{B}/include/winapi"
268 # else
269 # define CONFIG_TCC_SYSINCLUDEPATHS \
270 "{B}/include" \
271 ":" ALSO_TRIPLET(CONFIG_SYSROOT "/usr/local/include") \
272 ":" ALSO_TRIPLET(CONFIG_SYSROOT CONFIG_USR_INCLUDE)
273 # endif
274 #endif
275
276 /* library search paths */
277 #ifndef CONFIG_TCC_LIBPATHS
278 # if defined TCC_TARGET_PE || defined _WIN32
279 # define CONFIG_TCC_LIBPATHS "{B}/lib"
280 # else
281 # define CONFIG_TCC_LIBPATHS \
282 "{B}" \
283 ":" ALSO_TRIPLET(CONFIG_SYSROOT "/usr/" CONFIG_LDDIR) \
284 ":" ALSO_TRIPLET(CONFIG_SYSROOT "/" CONFIG_LDDIR) \
285 ":" ALSO_TRIPLET(CONFIG_SYSROOT "/usr/local/" CONFIG_LDDIR)
286 # endif
287 #endif
288
289 /* name of ELF interpreter */
290 #ifndef CONFIG_TCC_ELFINTERP
291 # if TARGETOS_FreeBSD
292 # define CONFIG_TCC_ELFINTERP "/libexec/ld-elf.so.1"
293 # elif TARGETOS_FreeBSD_kernel
294 # if defined(TCC_TARGET_X86_64)
295 # define CONFIG_TCC_ELFINTERP "/lib/ld-kfreebsd-x86-64.so.1"
296 # else
297 # define CONFIG_TCC_ELFINTERP "/lib/ld.so.1"
298 # endif
299 # elif TARGETOS_DragonFly
300 # define CONFIG_TCC_ELFINTERP "/usr/libexec/ld-elf.so.2"
301 # elif TARGETOS_NetBSD
302 # define CONFIG_TCC_ELFINTERP "/usr/libexec/ld.elf_so"
303 # elif TARGETOS_OpenBSD
304 # define CONFIG_TCC_ELFINTERP "/usr/libexec/ld.so"
305 # elif defined __GNU__
306 # define CONFIG_TCC_ELFINTERP "/lib/ld.so"
307 # elif defined(TCC_TARGET_PE)
308 # define CONFIG_TCC_ELFINTERP "-"
309 # elif defined(TCC_UCLIBC)
310 # define CONFIG_TCC_ELFINTERP "/lib/ld-uClibc.so.0" /* is there a uClibc for x86_64 ? */
311 # elif defined TCC_TARGET_ARM64
312 # if defined(TCC_MUSL)
313 # define CONFIG_TCC_ELFINTERP "/lib/ld-musl-aarch64.so.1"
314 # else
315 # define CONFIG_TCC_ELFINTERP "/lib/ld-linux-aarch64.so.1"
316 # endif
317 # elif defined(TCC_TARGET_X86_64)
318 # if defined(TCC_MUSL)
319 # define CONFIG_TCC_ELFINTERP "/lib/ld-musl-x86_64.so.1"
320 # else
321 # define CONFIG_TCC_ELFINTERP "/lib64/ld-linux-x86-64.so.2"
322 # endif
323 # elif defined(TCC_TARGET_RISCV64)
324 # define CONFIG_TCC_ELFINTERP "/lib/ld-linux-riscv64-lp64d.so.1"
325 # elif !defined(TCC_ARM_EABI)
326 # if defined(TCC_MUSL)
327 # if defined(TCC_TARGET_I386)
328 # define CONFIG_TCC_ELFINTERP "/lib/ld-musl-i386.so.1"
329 # else
330 # define CONFIG_TCC_ELFINTERP "/lib/ld-musl-arm.so.1"
331 # endif
332 # else
333 # define CONFIG_TCC_ELFINTERP "/lib/ld-linux.so.2"
334 # endif
335 # endif
336 #endif
337
338 /* var elf_interp dans *-gen.c */
339 #ifdef CONFIG_TCC_ELFINTERP
340 # define DEFAULT_ELFINTERP(s) CONFIG_TCC_ELFINTERP
341 #else
342 # define DEFAULT_ELFINTERP(s) default_elfinterp(s)
343 #endif
344
345 /* (target specific) libtcc1.a */
346 #ifndef TCC_LIBTCC1
347 # define TCC_LIBTCC1 "libtcc1.a"
348 #endif
349
350 #ifndef CONFIG_TCC_CROSSPREFIX
351 # define CONFIG_TCC_CROSSPREFIX ""
352 #endif
353
354 /* library to use with CONFIG_USE_LIBGCC instead of libtcc1.a */
355 #if defined CONFIG_USE_LIBGCC && !defined TCC_LIBGCC
356 #define TCC_LIBGCC USE_TRIPLET(CONFIG_SYSROOT "/" CONFIG_LDDIR) "/libgcc_s.so.1"
357 #endif
358
359 /* -------------------------------------------- */
360
361 #include "libtcc.h"
362 #include "elf.h"
363 #include "stab.h"
364 #include "dwarf.h"
365
366 /* -------------------------------------------- */
367
368 #ifndef PUB_FUNC /* functions used by tcc.c but not in libtcc.h */
369 # define PUB_FUNC
370 #endif
371
372 #ifndef ONE_SOURCE
373 # define ONE_SOURCE 1
374 #endif
375
376 /* support using libtcc from threads */
377 #ifndef CONFIG_TCC_SEMLOCK
378 # define CONFIG_TCC_SEMLOCK 1
379 #endif
380
381 #if ONE_SOURCE
382 #define ST_INLN static inline
383 #define ST_FUNC static
384 #define ST_DATA static
385 #else
386 #define ST_INLN
387 #define ST_FUNC
388 #define ST_DATA extern
389 #endif
390
391 #ifdef TCC_PROFILE /* profile all functions */
392 # define static
393 # define inline
394 #endif
395
396 /* -------------------------------------------- */
397 /* include the target specific definitions */
398
399 #define TARGET_DEFS_ONLY
400 #ifdef TCC_TARGET_I386
401 # include "i386-gen.c"
402 # include "i386-link.c"
403 #elif defined TCC_TARGET_X86_64
404 # include "x86_64-gen.c"
405 # include "x86_64-link.c"
406 #elif defined TCC_TARGET_ARM
407 # include "arm-gen.c"
408 # include "arm-link.c"
409 # include "arm-asm.c"
410 #elif defined TCC_TARGET_ARM64
411 # include "arm64-gen.c"
412 # include "arm64-link.c"
413 # include "arm-asm.c"
414 #elif defined TCC_TARGET_C67
415 # define TCC_TARGET_COFF
416 # include "coff.h"
417 # include "c67-gen.c"
418 # include "c67-link.c"
419 #elif defined(TCC_TARGET_RISCV64)
420 # include "riscv64-gen.c"
421 # include "riscv64-link.c"
422 # include "riscv64-asm.c"
423 #else
424 #error unknown target
425 #endif
426 #undef TARGET_DEFS_ONLY
427
428 /* -------------------------------------------- */
429
430 #if PTR_SIZE == 8
431 # define ELFCLASSW ELFCLASS64
432 # define ElfW(type) Elf##64##_##type
433 # define ELFW(type) ELF##64##_##type
434 # define ElfW_Rel ElfW(Rela)
435 # define SHT_RELX SHT_RELA
436 # define REL_SECTION_FMT ".rela%s"
437 #else
438 # define ELFCLASSW ELFCLASS32
439 # define ElfW(type) Elf##32##_##type
440 # define ELFW(type) ELF##32##_##type
441 # define ElfW_Rel ElfW(Rel)
442 # define SHT_RELX SHT_REL
443 # define REL_SECTION_FMT ".rel%s"
444 #endif
445 /* target address type */
446 #define addr_t ElfW(Addr)
447 #define ElfSym ElfW(Sym)
448
449 #if PTR_SIZE == 8 && !defined TCC_TARGET_PE
450 # define LONG_SIZE 8
451 #else
452 # define LONG_SIZE 4
453 #endif
454
455 /* -------------------------------------------- */
456
457 #define INCLUDE_STACK_SIZE 32
458 #define IFDEF_STACK_SIZE 64
459 #define VSTACK_SIZE 512
460 #define STRING_MAX_SIZE 1024
461 #define TOKSTR_MAX_SIZE 256
462 #define PACK_STACK_SIZE 8
463
464 #define TOK_HASH_SIZE 16384 /* must be a power of two */
465 #define TOK_ALLOC_INCR 512 /* must be a power of two */
466 #define TOK_MAX_SIZE 4 /* token max size in int unit when stored in string */
467
468 /* token symbol management */
469 typedef struct TokenSym {
470 struct TokenSym *hash_next;
471 struct Sym *sym_define; /* direct pointer to define */
472 struct Sym *sym_label; /* direct pointer to label */
473 struct Sym *sym_struct; /* direct pointer to structure */
474 struct Sym *sym_identifier; /* direct pointer to identifier */
475 int tok; /* token number */
476 int len;
477 char str[1];
478 } TokenSym;
479
480 #ifdef TCC_TARGET_PE
481 typedef unsigned short nwchar_t;
482 #else
483 typedef int nwchar_t;
484 #endif
485
486 typedef struct CString {
487 int size; /* size in bytes */
488 int size_allocated;
489 char *data; /* nwchar_t* in cases */
490 } CString;
491
492 /* type definition */
493 typedef struct CType {
494 int t;
495 struct Sym *ref;
496 } CType;
497
498 /* constant value */
499 typedef union CValue {
500 long double ld;
501 double d;
502 float f;
503 uint64_t i;
504 struct {
505 char *data;
506 int size;
507 } str;
508 int tab[LDOUBLE_SIZE/4];
509 } CValue;
510
511 /* value on stack */
512 typedef struct SValue {
513 CType type; /* type */
514 unsigned short r; /* register + flags */
515 unsigned short r2; /* second register, used for 'long long'
516 type. If not used, set to VT_CONST */
517 union {
518 struct { int jtrue, jfalse; }; /* forward jmps */
519 CValue c; /* constant, if VT_CONST */
520 };
521 union {
522 struct { unsigned short cmp_op, cmp_r; }; /* VT_CMP operation */
523 struct Sym *sym; /* symbol, if (VT_SYM | VT_CONST), or if */
524 }; /* result of unary() for an identifier. */
525
526 } SValue;
527
528 /* symbol attributes */
529 struct SymAttr {
530 unsigned short
531 aligned : 5, /* alignment as log2+1 (0 == unspecified) */
532 packed : 1,
533 weak : 1,
534 visibility : 2,
535 dllexport : 1,
536 nodecorate : 1,
537 dllimport : 1,
538 addrtaken : 1,
539 nodebug : 1,
540 xxxx : 2; /* not used */
541 };
542
543 /* function attributes or temporary attributes for parsing */
544 struct FuncAttr {
545 unsigned
546 func_call : 3, /* calling convention (0..5), see below */
547 func_type : 2, /* FUNC_OLD/NEW/ELLIPSIS */
548 func_noreturn : 1, /* attribute((noreturn)) */
549 func_ctor : 1, /* attribute((constructor)) */
550 func_dtor : 1, /* attribute((destructor)) */
551 func_args : 8, /* PE __stdcall args */
552 func_alwinl : 1, /* always_inline */
553 xxxx : 15;
554 };
555
556 /* symbol management */
557 typedef struct Sym {
558 int v; /* symbol token */
559 unsigned short r; /* associated register or VT_CONST/VT_LOCAL and LVAL type */
560 struct SymAttr a; /* symbol attributes */
561 union {
562 struct {
563 int c; /* associated number or Elf symbol index */
564 union {
565 int sym_scope; /* scope level for locals */
566 int jnext; /* next jump label */
567 struct FuncAttr f; /* function attributes */
568 int auxtype; /* bitfield access type */
569 };
570 };
571 long long enum_val; /* enum constant if IS_ENUM_VAL */
572 int *d; /* define token stream */
573 struct Sym *ncl; /* next cleanup */
574 };
575 CType type; /* associated type */
576 union {
577 struct Sym *next; /* next related symbol (for fields and anoms) */
578 int *e; /* expanded token stream */
579 int asm_label; /* associated asm label */
580 struct Sym *cleanupstate; /* in defined labels */
581 int *vla_array_str; /* vla array code */
582 };
583 struct Sym *prev; /* prev symbol in stack */
584 struct Sym *prev_tok; /* previous symbol for this token */
585 } Sym;
586
587 /* section definition */
588 typedef struct Section {
589 unsigned long data_offset; /* current data offset */
590 unsigned char *data; /* section data */
591 unsigned long data_allocated; /* used for realloc() handling */
592 TCCState *s1;
593 int sh_name; /* elf section name (only used during output) */
594 int sh_num; /* elf section number */
595 int sh_type; /* elf section type */
596 int sh_flags; /* elf section flags */
597 int sh_info; /* elf section info */
598 int sh_addralign; /* elf section alignment */
599 int sh_entsize; /* elf entry size */
600 unsigned long sh_size; /* section size (only used during output) */
601 addr_t sh_addr; /* address at which the section is relocated */
602 unsigned long sh_offset; /* file offset */
603 int nb_hashed_syms; /* used to resize the hash table */
604 struct Section *link; /* link to another section */
605 struct Section *reloc; /* corresponding section for relocation, if any */
606 struct Section *hash; /* hash table for symbols */
607 struct Section *prev; /* previous section on section stack */
608 char name[1]; /* section name */
609 } Section;
610
611 typedef struct DLLReference {
612 int level;
613 void *handle;
614 unsigned char found, index;
615 char name[1];
616 } DLLReference;
617
618 /* -------------------------------------------------- */
619
620 #define SYM_STRUCT 0x40000000 /* struct/union/enum symbol space */
621 #define SYM_FIELD 0x20000000 /* struct/union field symbol space */
622 #define SYM_FIRST_ANOM 0x10000000 /* first anonymous sym */
623
624 /* stored in 'Sym->f.func_type' field */
625 #define FUNC_NEW 1 /* ansi function prototype */
626 #define FUNC_OLD 2 /* old function prototype */
627 #define FUNC_ELLIPSIS 3 /* ansi function prototype with ... */
628
629 /* stored in 'Sym->f.func_call' field */
630 #define FUNC_CDECL 0 /* standard c call */
631 #define FUNC_STDCALL 1 /* pascal c call */
632 #define FUNC_FASTCALL1 2 /* first param in %eax */
633 #define FUNC_FASTCALL2 3 /* first parameters in %eax, %edx */
634 #define FUNC_FASTCALL3 4 /* first parameter in %eax, %edx, %ecx */
635 #define FUNC_FASTCALLW 5 /* first parameter in %ecx, %edx */
636 #define FUNC_THISCALL 6 /* first param in %ecx */
637
638 /* field 'Sym.t' for macros */
639 #define MACRO_OBJ 0 /* object like macro */
640 #define MACRO_FUNC 1 /* function like macro */
641 #define MACRO_JOIN 2 /* macro uses ## */
642
643 /* field 'Sym.r' for C labels */
644 #define LABEL_DEFINED 0 /* label is defined */
645 #define LABEL_FORWARD 1 /* label is forward defined */
646 #define LABEL_DECLARED 2 /* label is declared but never used */
647 #define LABEL_GONE 3 /* label isn't in scope, but not yet popped
648 from local_label_stack (stmt exprs) */
649
650 /* type_decl() types */
651 #define TYPE_ABSTRACT 1 /* type without variable */
652 #define TYPE_DIRECT 2 /* type with variable */
653 #define TYPE_PARAM 4 /* type declares function parameter */
654 #define TYPE_NEST 8 /* nested call to post_type */
655
656 #define IO_BUF_SIZE 8192
657
658 typedef struct BufferedFile {
659 uint8_t *buf_ptr;
660 uint8_t *buf_end;
661 int fd;
662 struct BufferedFile *prev;
663 int line_num; /* current line number - here to simplify code */
664 int line_ref; /* tcc -E: last printed line */
665 int ifndef_macro; /* #ifndef macro / #endif search */
666 int ifndef_macro_saved; /* saved ifndef_macro */
667 int *ifdef_stack_ptr; /* ifdef_stack value at the start of the file */
668 int include_next_index; /* next search path */
669 int prev_tok_flags; /* saved tok_flags */
670 char filename[1024]; /* filename */
671 char *true_filename; /* filename not modified by # line directive */
672 unsigned char unget[4];
673 unsigned char buffer[1]; /* extra size for CH_EOB char */
674 } BufferedFile;
675
676 #define CH_EOB '\\' /* end of buffer or '\0' char in file */
677 #define CH_EOF (-1) /* end of file */
678
679 /* used to record tokens */
680 typedef struct TokenString {
681 int *str;
682 int len;
683 int need_spc;
684 int allocated_len;
685 int last_line_num;
686 int save_line_num;
687 /* used to chain token-strings with begin/end_macro() */
688 struct TokenString *prev;
689 const int *prev_ptr;
690 char alloc;
691 } TokenString;
692
693 /* GNUC attribute definition */
694 typedef struct AttributeDef {
695 struct SymAttr a;
696 struct FuncAttr f;
697 struct Section *section;
698 Sym *cleanup_func;
699 int alias_target; /* token */
700 int asm_label; /* associated asm label */
701 char attr_mode; /* __attribute__((__mode__(...))) */
702 } AttributeDef;
703
704 /* inline functions */
705 typedef struct InlineFunc {
706 TokenString *func_str;
707 Sym *sym;
708 char filename[1];
709 } InlineFunc;
710
711 /* include file cache, used to find files faster and also to eliminate
712 inclusion if the include file is protected by #ifndef ... #endif */
713 typedef struct CachedInclude {
714 int ifndef_macro;
715 int once;
716 int hash_next; /* -1 if none */
717 char filename[1]; /* path specified in #include */
718 } CachedInclude;
719
720 #define CACHED_INCLUDES_HASH_SIZE 32
721
722 #ifdef CONFIG_TCC_ASM
723 typedef struct ExprValue {
724 uint64_t v;
725 Sym *sym;
726 int pcrel;
727 } ExprValue;
728
729 #define MAX_ASM_OPERANDS 30
730 typedef struct ASMOperand {
731 int id; /* GCC 3 optional identifier (0 if number only supported) */
732 char constraint[16];
733 char asm_str[16]; /* computed asm string for operand */
734 SValue *vt; /* C value of the expression */
735 int ref_index; /* if >= 0, gives reference to a output constraint */
736 int input_index; /* if >= 0, gives reference to an input constraint */
737 int priority; /* priority, used to assign registers */
738 int reg; /* if >= 0, register number used for this operand */
739 int is_llong; /* true if double register value */
740 int is_memory; /* true if memory operand */
741 int is_rw; /* for '+' modifier */
742 int is_label; /* for asm goto */
743 } ASMOperand;
744 #endif
745
746 /* extra symbol attributes (not in symbol table) */
747 struct sym_attr {
748 unsigned got_offset;
749 unsigned plt_offset;
750 int plt_sym;
751 int dyn_index;
752 #ifdef TCC_TARGET_ARM
753 unsigned char plt_thumb_stub:1;
754 #endif
755 };
756
757 struct TCCState {
758 unsigned char verbose; /* if true, display some information during compilation */
759 unsigned char nostdinc; /* if true, no standard headers are added */
760 unsigned char nostdlib; /* if true, no standard libraries are added */
761 unsigned char nocommon; /* if true, do not use common symbols for .bss data */
762 unsigned char static_link; /* if true, static linking is performed */
763 unsigned char rdynamic; /* if true, all symbols are exported */
764 unsigned char symbolic; /* if true, resolve symbols in the current module first */
765 unsigned char filetype; /* file type for compilation (NONE,C,ASM) */
766 unsigned char optimize; /* only to #define __OPTIMIZE__ */
767 unsigned char option_pthread; /* -pthread option */
768 unsigned char enable_new_dtags; /* -Wl,--enable-new-dtags */
769 unsigned int cversion; /* supported C ISO version, 199901 (the default), 201112, ... */
770
771 /* C language options */
772 unsigned char char_is_unsigned;
773 unsigned char leading_underscore;
774 unsigned char ms_extensions; /* allow nested named struct w/o identifier behave like unnamed */
775 unsigned char dollars_in_identifiers; /* allows '$' char in identifiers */
776 unsigned char ms_bitfields; /* if true, emulate MS algorithm for aligning bitfields */
777
778 /* warning switches */
779 unsigned char warn_none;
780 unsigned char warn_all;
781 unsigned char warn_error;
782 unsigned char warn_write_strings;
783 unsigned char warn_unsupported;
784 unsigned char warn_implicit_function_declaration;
785 unsigned char warn_discarded_qualifiers;
786 #define WARN_ON 1 /* warning is on (-Woption) */
787 unsigned char warn_num; /* temp var for tcc_warning_c() */
788
789 unsigned char option_r; /* option -r */
790 unsigned char do_bench; /* option -bench */
791 unsigned char just_deps; /* option -M */
792 unsigned char gen_deps; /* option -MD */
793 unsigned char include_sys_deps; /* option -MD */
794 unsigned char gen_phony_deps; /* option -MP */
795
796 /* compile with debug symbol (and use them if error during execution) */
797 unsigned char do_debug;
798 unsigned char dwarf;
799 unsigned char do_backtrace;
800 #ifdef CONFIG_TCC_BCHECK
801 /* compile with built-in memory and bounds checker */
802 unsigned char do_bounds_check;
803 #endif
804 unsigned char test_coverage; /* generate test coverage code */
805
806 /* use GNU C extensions */
807 unsigned char gnu_ext;
808 /* use TinyCC extensions */
809 unsigned char tcc_ext;
810
811 unsigned char dflag; /* -dX value */
812 unsigned char Pflag; /* -P switch (LINE_MACRO_OUTPUT_FORMAT) */
813
814 #ifdef TCC_TARGET_X86_64
815 unsigned char nosse; /* For -mno-sse support. */
816 #endif
817 #ifdef TCC_TARGET_ARM
818 unsigned char float_abi; /* float ABI of the generated code*/
819 #endif
820
821 unsigned char has_text_addr;
822 addr_t text_addr; /* address of text section */
823 unsigned section_align; /* section alignment */
824 #ifdef TCC_TARGET_I386
825 int seg_size; /* 32. Can be 16 with i386 assembler (.code16) */
826 #endif
827
828 char *tcc_lib_path; /* CONFIG_TCCDIR or -B option */
829 char *soname; /* as specified on the command line (-soname) */
830 char *rpath; /* as specified on the command line (-Wl,-rpath=) */
831 char *elf_entryname; /* "_start" unless set */
832 char *init_symbol; /* symbols to call at load-time (not used currently) */
833 char *fini_symbol; /* symbols to call at unload-time (not used currently) */
834 char *mapfile; /* create a mapfile (not used currently) */
835
836 /* output type, see TCC_OUTPUT_XXX */
837 int output_type;
838 /* output format, see TCC_OUTPUT_FORMAT_xxx */
839 int output_format;
840 /* nth test to run with -dt -run */
841 int run_test;
842
843 /* array of all loaded dlls (including those referenced by loaded dlls) */
844 DLLReference **loaded_dlls;
845 int nb_loaded_dlls;
846
847 /* include paths */
848 char **include_paths;
849 int nb_include_paths;
850
851 char **sysinclude_paths;
852 int nb_sysinclude_paths;
853
854 /* library paths */
855 char **library_paths;
856 int nb_library_paths;
857
858 /* crt?.o object path */
859 char **crt_paths;
860 int nb_crt_paths;
861
862 /* -D / -U options */
863 CString cmdline_defs;
864 /* -include options */
865 CString cmdline_incl;
866
867 /* error handling */
868 void *error_opaque;
869 void (*error_func)(void *opaque, const char *msg);
870 int error_set_jmp_enabled;
871 jmp_buf error_jmp_buf;
872 int nb_errors;
873
874 /* output file for preprocessing (-E) */
875 FILE *ppfp;
876
877 /* for -MD/-MF: collected dependencies for this compilation */
878 char **target_deps;
879 int nb_target_deps;
880
881 /* compilation */
882 BufferedFile *include_stack[INCLUDE_STACK_SIZE];
883 BufferedFile **include_stack_ptr;
884
885 int ifdef_stack[IFDEF_STACK_SIZE];
886 int *ifdef_stack_ptr;
887
888 /* included files enclosed with #ifndef MACRO */
889 int cached_includes_hash[CACHED_INCLUDES_HASH_SIZE];
890 CachedInclude **cached_includes;
891 int nb_cached_includes;
892
893 /* #pragma pack stack */
894 int pack_stack[PACK_STACK_SIZE];
895 int *pack_stack_ptr;
896 char **pragma_libs;
897 int nb_pragma_libs;
898
899 /* inline functions are stored as token lists and compiled last
900 only if referenced */
901 struct InlineFunc **inline_fns;
902 int nb_inline_fns;
903
904 /* sections */
905 Section **sections;
906 int nb_sections; /* number of sections, including first dummy section */
907
908 Section **priv_sections;
909 int nb_priv_sections; /* number of private sections */
910
911 /* predefined sections */
912 Section *text_section, *data_section, *rodata_section, *bss_section;
913 Section *common_section;
914 Section *cur_text_section; /* current section where function code is generated */
915 #ifdef CONFIG_TCC_BCHECK
916 /* bound check related sections */
917 Section *bounds_section; /* contains global data bound description */
918 Section *lbounds_section; /* contains local data bound description */
919 #endif
920 /* symbol section */
921 union { Section *symtab_section, *symtab; }; /* historical alias */
922 /* temporary dynamic symbol sections (for dll loading) */
923 Section *dynsymtab_section;
924 /* exported dynamic symbol section */
925 Section *dynsym;
926 /* got & plt handling */
927 Section *got, *plt;
928 /* debug sections */
929 Section *stab_section;
930 Section *dwarf_info_section;
931 Section *dwarf_abbrev_section;
932 Section *dwarf_line_section;
933 Section *dwarf_aranges_section;
934 Section *dwarf_str_section;
935 Section *dwarf_line_str_section;
936 int dwlo, dwhi; /* dwarf section range */
937 /* test coverage */
938 Section *tcov_section;
939 /* debug state */
940 struct _tccdbg *dState;
941
942 /* Is there a new undefined sym since last new_undef_sym() */
943 int new_undef_sym;
944 /* extra attributes (eg. GOT/PLT value) for symtab symbols */
945 struct sym_attr *sym_attrs;
946 int nb_sym_attrs;
947 /* ptr to next reloc entry reused */
948 ElfW_Rel *qrel;
949 #define qrel s1->qrel
950
951 #ifdef TCC_TARGET_RISCV64
952 struct pcrel_hi { addr_t addr, val; } last_hi;
953 #define last_hi s1->last_hi
954 #endif
955
956 #ifdef TCC_TARGET_PE
957 /* PE info */
958 int pe_subsystem;
959 unsigned pe_characteristics;
960 unsigned pe_file_align;
961 unsigned pe_stack_size;
962 addr_t pe_imagebase;
963 # ifdef TCC_TARGET_X86_64
964 Section *uw_pdata;
965 int uw_sym;
966 unsigned uw_offs;
967 # endif
968 #else
969 unsigned shf_RELRO; /* section flags for RELRO sections */
970 #endif
971
972 #if defined TCC_TARGET_MACHO
973 char *install_name;
974 uint32_t compatibility_version;
975 uint32_t current_version;
976 #endif
977
978 #ifndef ELF_OBJ_ONLY
979 int nb_sym_versions;
980 struct sym_version *sym_versions;
981 int nb_sym_to_version;
982 int *sym_to_version;
983 int dt_verneednum;
984 Section *versym_section;
985 Section *verneed_section;
986 #endif
987
988 #ifdef TCC_IS_NATIVE
989 const char *run_main; /* entry for tcc_run() */
990 void *run_ptr; /* runtime_memory */
991 unsigned run_size; /* size of runtime_memory */
992 #ifdef _WIN64
993 void *run_function_table; /* unwind data */
994 #endif
995 struct TCCState *next;
996 struct rt_context *rc; /* pointer to backtrace info block */
997 void *run_lj, *run_jb; /* sj/lj for tcc_setjmp()/tcc_run() */
998 TCCBtFunc *bt_func;
999 void *bt_data;
1000 #endif
1001
1002 #ifdef CONFIG_TCC_BACKTRACE
1003 int rt_num_callers;
1004 #endif
1005
1006 /* benchmark info */
1007 int total_idents;
1008 int total_lines;
1009 unsigned int total_bytes;
1010 unsigned int total_output[4];
1011
1012 /* option -dnum (for general development purposes) */
1013 int g_debug;
1014
1015 /* used by tcc_load_ldscript */
1016 int fd, cc;
1017
1018 /* for warnings/errors for object files */
1019 const char *current_filename;
1020
1021 /* used by main and tcc_parse_args only */
1022 struct filespec **files; /* files seen on command line */
1023 int nb_files; /* number thereof */
1024 int nb_libraries; /* number of libs thereof */
1025 char *outfile; /* output filename */
1026 char *deps_outfile; /* option -MF */
1027 int argc;
1028 char **argv;
1029 CString linker_arg; /* collect -Wl options */
1030 };
1031
1032 struct filespec {
1033 char type;
1034 char name[1];
1035 };
1036
1037 /* The current value can be: */
1038 #define VT_VALMASK 0x003f /* mask for value location, register or: */
1039 #define VT_CONST 0x0030 /* constant in vc (must be first non register value) */
1040 #define VT_LLOCAL 0x0031 /* lvalue, offset on stack */
1041 #define VT_LOCAL 0x0032 /* offset on stack */
1042 #define VT_CMP 0x0033 /* the value is stored in processor flags (in vc) */
1043 #define VT_JMP 0x0034 /* value is the consequence of jmp true (even) */
1044 #define VT_JMPI 0x0035 /* value is the consequence of jmp false (odd) */
1045 #define VT_LVAL 0x0100 /* var is an lvalue */
1046 #define VT_SYM 0x0200 /* a symbol value is added */
1047 #define VT_MUSTCAST 0x0C00 /* value must be casted to be correct (used for
1048 char/short stored in integer registers) */
1049 #define VT_NONCONST 0x1000 /* VT_CONST, but not an (C standard) integer
1050 constant expression */
1051 #define VT_MUSTBOUND 0x4000 /* bound checking must be done before
1052 dereferencing value */
1053 #define VT_BOUNDED 0x8000 /* value is bounded. The address of the
1054 bounding function call point is in vc */
1055 /* types */
1056 #define VT_BTYPE 0x000f /* mask for basic type */
1057 #define VT_VOID 0 /* void type */
1058 #define VT_BYTE 1 /* signed byte type */
1059 #define VT_SHORT 2 /* short type */
1060 #define VT_INT 3 /* integer type */
1061 #define VT_LLONG 4 /* 64 bit integer */
1062 #define VT_PTR 5 /* pointer */
1063 #define VT_FUNC 6 /* function type */
1064 #define VT_STRUCT 7 /* struct/union definition */
1065 #define VT_FLOAT 8 /* IEEE float */
1066 #define VT_DOUBLE 9 /* IEEE double */
1067 #define VT_LDOUBLE 10 /* IEEE long double */
1068 #define VT_BOOL 11 /* ISOC99 boolean type */
1069 #define VT_QLONG 13 /* 128-bit integer. Only used for x86-64 ABI */
1070 #define VT_QFLOAT 14 /* 128-bit float. Only used for x86-64 ABI */
1071
1072 #define VT_UNSIGNED 0x0010 /* unsigned type */
1073 #define VT_DEFSIGN 0x0020 /* explicitly signed or unsigned */
1074 #define VT_ARRAY 0x0040 /* array type (also has VT_PTR) */
1075 #define VT_BITFIELD 0x0080 /* bitfield modifier */
1076 #define VT_CONSTANT 0x0100 /* const modifier */
1077 #define VT_VOLATILE 0x0200 /* volatile modifier */
1078 #define VT_VLA 0x0400 /* VLA type (also has VT_PTR and VT_ARRAY) */
1079 #define VT_LONG 0x0800 /* long type (also has VT_INT rsp. VT_LLONG) */
1080
1081 /* storage */
1082 #define VT_EXTERN 0x00001000 /* extern definition */
1083 #define VT_STATIC 0x00002000 /* static variable */
1084 #define VT_TYPEDEF 0x00004000 /* typedef definition */
1085 #define VT_INLINE 0x00008000 /* inline definition */
1086 /* currently unused: 0x000[1248]0000 */
1087
1088 #define VT_STRUCT_SHIFT 20 /* shift for bitfield shift values (32 - 2*6) */
1089 #define VT_STRUCT_MASK (((1U << (6+6)) - 1) << VT_STRUCT_SHIFT | VT_BITFIELD)
1090 #define BIT_POS(t) (((t) >> VT_STRUCT_SHIFT) & 0x3f)
1091 #define BIT_SIZE(t) (((t) >> (VT_STRUCT_SHIFT + 6)) & 0x3f)
1092
1093 #define VT_UNION (1 << VT_STRUCT_SHIFT | VT_STRUCT)
1094 #define VT_ENUM (2 << VT_STRUCT_SHIFT) /* integral type is an enum really */
1095 #define VT_ENUM_VAL (3 << VT_STRUCT_SHIFT) /* integral type is an enum constant really */
1096
1097 #define IS_ENUM(t) ((t & VT_STRUCT_MASK) == VT_ENUM)
1098 #define IS_ENUM_VAL(t) ((t & VT_STRUCT_MASK) == VT_ENUM_VAL)
1099 #define IS_UNION(t) ((t & (VT_STRUCT_MASK|VT_BTYPE)) == VT_UNION)
1100
1101 #define VT_ATOMIC VT_VOLATILE
1102
1103 /* type mask (except storage) */
1104 #define VT_STORAGE (VT_EXTERN | VT_STATIC | VT_TYPEDEF | VT_INLINE)
1105 #define VT_TYPE (~(VT_STORAGE|VT_STRUCT_MASK))
1106
1107 /* symbol was created by tccasm.c first */
1108 #define VT_ASM (VT_VOID | 1 << VT_STRUCT_SHIFT)
1109 #define VT_ASM_FUNC (VT_ASM | 2 << VT_STRUCT_SHIFT)
1110 #define IS_ASM_SYM(sym) (((sym)->type.t & (VT_BTYPE | VT_ASM)) == VT_ASM)
1111
1112 /* general: set/get the pseudo-bitfield value for bit-mask M */
1113 #define BFVAL(M,N) ((unsigned)((M) & ~((M) << 1)) * (N))
1114 #define BFGET(X,M) (((X) & (M)) / BFVAL(M,1))
1115 #define BFSET(X,M,N) ((X) = ((X) & ~(M)) | BFVAL(M,N))
1116
1117 /* token values */
1118
1119 /* conditional ops */
1120 #define TOK_LAND 0x90
1121 #define TOK_LOR 0x91
1122 /* warning: the following compare tokens depend on i386 asm code */
1123 #define TOK_ULT 0x92
1124 #define TOK_UGE 0x93
1125 #define TOK_EQ 0x94
1126 #define TOK_NE 0x95
1127 #define TOK_ULE 0x96
1128 #define TOK_UGT 0x97
1129 #define TOK_Nset 0x98
1130 #define TOK_Nclear 0x99
1131 #define TOK_LT 0x9c
1132 #define TOK_GE 0x9d
1133 #define TOK_LE 0x9e
1134 #define TOK_GT 0x9f
1135
1136 #define TOK_ISCOND(t) (t >= TOK_LAND && t <= TOK_GT)
1137
1138 #define TOK_DEC 0x80 /* -- */
1139 #define TOK_MID 0x81 /* inc/dec, to void constant */
1140 #define TOK_INC 0x82 /* ++ */
1141 #define TOK_UDIV 0x83 /* unsigned division */
1142 #define TOK_UMOD 0x84 /* unsigned modulo */
1143 #define TOK_PDIV 0x85 /* fast division with undefined rounding for pointers */
1144 #define TOK_UMULL 0x86 /* unsigned 32x32 -> 64 mul */
1145 #define TOK_ADDC1 0x87 /* add with carry generation */
1146 #define TOK_ADDC2 0x88 /* add with carry use */
1147 #define TOK_SUBC1 0x89 /* add with carry generation */
1148 #define TOK_SUBC2 0x8a /* add with carry use */
1149 #define TOK_SHL '<' /* shift left */
1150 #define TOK_SAR '>' /* signed shift right */
1151 #define TOK_SHR 0x8b /* unsigned shift right */
1152 #define TOK_NEG TOK_MID /* unary minus operation (for floats) */
1153
1154 #define TOK_ARROW 0xa0 /* -> */
1155 #define TOK_DOTS 0xa1 /* three dots */
1156 #define TOK_TWODOTS 0xa2 /* C++ token ? */
1157 #define TOK_TWOSHARPS 0xa3 /* ## preprocessing token */
1158 #define TOK_PLCHLDR 0xa4 /* placeholder token as defined in C99 */
1159 #define TOK_PPJOIN (TOK_TWOSHARPS | SYM_FIELD) /* A '##' in a macro to mean pasting */
1160 #define TOK_SOTYPE 0xa7 /* alias of '(' for parsing sizeof (type) */
1161
1162 /* assignment operators */
1163 #define TOK_A_ADD 0xb0
1164 #define TOK_A_SUB 0xb1
1165 #define TOK_A_MUL 0xb2
1166 #define TOK_A_DIV 0xb3
1167 #define TOK_A_MOD 0xb4
1168 #define TOK_A_AND 0xb5
1169 #define TOK_A_OR 0xb6
1170 #define TOK_A_XOR 0xb7
1171 #define TOK_A_SHL 0xb8
1172 #define TOK_A_SAR 0xb9
1173
1174 #define TOK_ASSIGN(t) (t >= TOK_A_ADD && t <= TOK_A_SAR)
1175 #define TOK_ASSIGN_OP(t) ("+-*/%&|^<>"[t - TOK_A_ADD])
1176
1177 /* tokens that carry values (in additional token string space / tokc) --> */
1178 #define TOK_CCHAR 0xc0 /* char constant in tokc */
1179 #define TOK_LCHAR 0xc1
1180 #define TOK_CINT 0xc2 /* number in tokc */
1181 #define TOK_CUINT 0xc3 /* unsigned int constant */
1182 #define TOK_CLLONG 0xc4 /* long long constant */
1183 #define TOK_CULLONG 0xc5 /* unsigned long long constant */
1184 #define TOK_CLONG 0xc6 /* long constant */
1185 #define TOK_CULONG 0xc7 /* unsigned long constant */
1186 #define TOK_STR 0xc8 /* pointer to string in tokc */
1187 #define TOK_LSTR 0xc9
1188 #define TOK_CFLOAT 0xca /* float constant */
1189 #define TOK_CDOUBLE 0xcb /* double constant */
1190 #define TOK_CLDOUBLE 0xcc /* long double constant */
1191 #define TOK_PPNUM 0xcd /* preprocessor number */
1192 #define TOK_PPSTR 0xce /* preprocessor string */
1193 #define TOK_LINENUM 0xcf /* line number info */
1194
1195 #define TOK_HAS_VALUE(t) (t >= TOK_CCHAR && t <= TOK_LINENUM)
1196
1197 #define TOK_EOF (-1) /* end of file */
1198 #define TOK_LINEFEED 10 /* line feed */
1199
1200 /* all identifiers and strings have token above that */
1201 #define TOK_IDENT 256
1202
1203 enum tcc_token {
1204 TOK_LAST = TOK_IDENT - 1
1205 #define DEF(id, str) ,id
1206 #include "tcctok.h"
1207 #undef DEF
1208 };
1209
1210 /* keywords: tok >= TOK_IDENT && tok < TOK_UIDENT */
1211 #define TOK_UIDENT TOK_DEFINE
1212
1213 /* ------------ libtcc.c ------------ */
1214
1215 ST_DATA struct TCCState *tcc_state;
1216 ST_DATA void** stk_data;
1217 ST_DATA int nb_stk_data;
1218
1219 /* public functions currently used by the tcc main function */
1220 ST_FUNC char *pstrcpy(char *buf, size_t buf_size, const char *s);
1221 ST_FUNC char *pstrcat(char *buf, size_t buf_size, const char *s);
1222 ST_FUNC char *pstrncpy(char *out, const char *in, size_t num);
1223 PUB_FUNC char *tcc_basename(const char *name);
1224 PUB_FUNC char *tcc_fileextension (const char *name);
1225
1226 /* all allocations - even MEM_DEBUG - use these */
1227 PUB_FUNC void tcc_free(void *ptr);
1228 PUB_FUNC void *tcc_malloc(unsigned long size);
1229 PUB_FUNC void *tcc_mallocz(unsigned long size);
1230 PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size);
1231 PUB_FUNC char *tcc_strdup(const char *str);
1232
1233 #ifdef MEM_DEBUG
1234 #define tcc_free(ptr) tcc_free_debug(ptr)
1235 #define tcc_malloc(size) tcc_malloc_debug(size, __FILE__, __LINE__)
1236 #define tcc_mallocz(size) tcc_mallocz_debug(size, __FILE__, __LINE__)
1237 #define tcc_realloc(ptr,size) tcc_realloc_debug(ptr, size, __FILE__, __LINE__)
1238 #define tcc_strdup(str) tcc_strdup_debug(str, __FILE__, __LINE__)
1239 PUB_FUNC void tcc_free_debug(void *ptr);
1240 PUB_FUNC void *tcc_malloc_debug(unsigned long size, const char *file, int line);
1241 PUB_FUNC void *tcc_mallocz_debug(unsigned long size, const char *file, int line);
1242 PUB_FUNC void *tcc_realloc_debug(void *ptr, unsigned long size, const char *file, int line);
1243 PUB_FUNC char *tcc_strdup_debug(const char *str, const char *file, int line);
1244 #endif
1245
1246 ST_FUNC void libc_free(void *ptr);
1247 #define free(p) use_tcc_free(p)
1248 #define malloc(s) use_tcc_malloc(s)
1249 #define realloc(p, s) use_tcc_realloc(p, s)
1250 #undef strdup
1251 #define strdup(s) use_tcc_strdup(s)
1252 PUB_FUNC int _tcc_error_noabort(const char *fmt, ...) PRINTF_LIKE(1,2);
1253 PUB_FUNC NORETURN void _tcc_error(const char *fmt, ...) PRINTF_LIKE(1,2);
1254 PUB_FUNC void _tcc_warning(const char *fmt, ...) PRINTF_LIKE(1,2);
1255 #define tcc_internal_error(msg) \
1256 tcc_error("internal compiler error in %s:%d: %s", __FUNCTION__,__LINE__,msg)
1257
1258 /* other utilities */
1259 ST_FUNC void dynarray_add(void *ptab, int *nb_ptr, void *data);
1260 ST_FUNC void dynarray_reset(void *pp, int *n);
1261 ST_INLN void cstr_ccat(CString *cstr, int ch);
1262 ST_FUNC void cstr_cat(CString *cstr, const char *str, int len);
1263 ST_FUNC void cstr_wccat(CString *cstr, int ch);
1264 ST_FUNC void cstr_new(CString *cstr);
1265 ST_FUNC void cstr_free(CString *cstr);
1266 ST_FUNC int cstr_printf(CString *cs, const char *fmt, ...) PRINTF_LIKE(2,3);
1267 ST_FUNC int cstr_vprintf(CString *cstr, const char *fmt, va_list ap);
1268 ST_FUNC void cstr_reset(CString *cstr);
1269 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen);
1270 ST_FUNC int tcc_open(TCCState *s1, const char *filename);
1271 ST_FUNC void tcc_close(void);
1272
1273 /* mark a memory pointer on stack for cleanup after errors */
1274 #define stk_push(p) dynarray_add(&stk_data, &nb_stk_data, p)
1275 #define stk_pop() (--nb_stk_data)
1276 /* mark CString on stack for cleanup errors */
1277 #define cstr_new_s(cstr) (cstr_new(cstr), stk_push(&(cstr)->data))
1278 #define cstr_free_s(cstr) (cstr_free(cstr), stk_pop())
1279
1280 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags);
1281 /* flags: */
1282 #define AFF_PRINT_ERROR 0x10 /* print error if file not found */
1283 #define AFF_REFERENCED_DLL 0x20 /* load a referenced dll from another dll */
1284 #define AFF_TYPE_BIN 0x40 /* file to add is binary */
1285 #define AFF_WHOLE_ARCHIVE 0x80 /* load all objects from archive */
1286 /* s->filetype: */
1287 #define AFF_TYPE_NONE 0
1288 #define AFF_TYPE_C 1
1289 #define AFF_TYPE_ASM 2
1290 #define AFF_TYPE_ASMPP 4
1291 #define AFF_TYPE_LIB 8
1292 #define AFF_TYPE_MASK (15 | AFF_TYPE_BIN)
1293 /* values from tcc_object_type(...) */
1294 #define AFF_BINTYPE_REL 1
1295 #define AFF_BINTYPE_DYN 2
1296 #define AFF_BINTYPE_AR 3
1297 #define AFF_BINTYPE_C67 4
1298
1299 /* return value of tcc_add_file_internal(): 0, -1, or FILE_NOT_FOUND */
1300 #define FILE_NOT_FOUND -2
1301
1302 #ifndef ELF_OBJ_ONLY
1303 ST_FUNC int tcc_add_crt(TCCState *s, const char *filename);
1304 #endif
1305 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags);
1306 ST_FUNC void tcc_add_support(TCCState *s1, const char *filename);
1307 #ifdef CONFIG_TCC_BCHECK
1308 ST_FUNC void tcc_add_bcheck(TCCState *s1);
1309 #endif
1310 #ifdef CONFIG_TCC_BACKTRACE
1311 ST_FUNC void tcc_add_btstub(TCCState *s1);
1312 #endif
1313 ST_FUNC void tcc_add_pragma_libs(TCCState *s1);
1314 PUB_FUNC int tcc_add_library_err(TCCState *s, const char *f);
1315 PUB_FUNC void tcc_print_stats(TCCState *s, unsigned total_time);
1316 PUB_FUNC int tcc_parse_args(TCCState *s, int *argc, char ***argv, int optind);
1317 #ifdef _WIN32
1318 ST_FUNC char *normalize_slashes(char *path);
1319 #endif
1320 ST_FUNC DLLReference *tcc_add_dllref(TCCState *s1, const char *dllname, int level);
1321 ST_FUNC char *tcc_load_text(int fd);
1322 /* for #pragma once */
1323 ST_FUNC int normalized_PATHCMP(const char *f1, const char *f2);
1324
1325 /* tcc_parse_args return codes: */
1326 #define OPT_HELP 1
1327 #define OPT_HELP2 2
1328 #define OPT_V 3
1329 #define OPT_PRINT_DIRS 4
1330 #define OPT_AR 5
1331 #define OPT_IMPDEF 6
1332 #define OPT_M32 32
1333 #define OPT_M64 64
1334
1335 /* ------------ tccpp.c ------------ */
1336
1337 ST_DATA struct BufferedFile *file;
1338 ST_DATA int tok;
1339 ST_DATA CValue tokc;
1340 ST_DATA const int *macro_ptr;
1341 ST_DATA int parse_flags;
1342 ST_DATA int tok_flags;
1343 ST_DATA CString tokcstr; /* current parsed string, if any */
1344
1345 /* display benchmark infos */
1346 ST_DATA int tok_ident;
1347 ST_DATA TokenSym **table_ident;
1348 ST_DATA int pp_expr;
1349
1350 #define TOK_FLAG_BOL 0x0001 /* beginning of line before */
1351 #define TOK_FLAG_BOF 0x0002 /* beginning of file before */
1352 #define TOK_FLAG_ENDIF 0x0004 /* a endif was found matching starting #ifdef */
1353
1354 #define PARSE_FLAG_PREPROCESS 0x0001 /* activate preprocessing */
1355 #define PARSE_FLAG_TOK_NUM 0x0002 /* return numbers instead of TOK_PPNUM */
1356 #define PARSE_FLAG_LINEFEED 0x0004 /* line feed is returned as a
1357 token. line feed is also
1358 returned at eof */
1359 #define PARSE_FLAG_ASM_FILE 0x0008 /* we processing an asm file: '#' can be used for line comment, etc. */
1360 #define PARSE_FLAG_SPACES 0x0010 /* next() returns space tokens (for -E) */
1361 #define PARSE_FLAG_ACCEPT_STRAYS 0x0020 /* next() returns '\\' token */
1362 #define PARSE_FLAG_TOK_STR 0x0040 /* return parsed strings instead of TOK_PPSTR */
1363
1364 /* isidnum_table flags: */
1365 #define IS_SPC 1
1366 #define IS_ID 2
1367 #define IS_NUM 4
1368
1369 enum line_macro_output_format {
1370 LINE_MACRO_OUTPUT_FORMAT_GCC,
1371 LINE_MACRO_OUTPUT_FORMAT_NONE,
1372 LINE_MACRO_OUTPUT_FORMAT_STD,
1373 LINE_MACRO_OUTPUT_FORMAT_P10 = 11
1374 };
1375
1376 ST_FUNC TokenSym *tok_alloc(const char *str, int len);
1377 ST_FUNC int tok_alloc_const(const char *str);
1378 ST_FUNC const char *get_tok_str(int v, CValue *cv);
1379 ST_FUNC void begin_macro(TokenString *str, int alloc);
1380 ST_FUNC void end_macro(void);
1381 ST_FUNC int set_idnum(int c, int val);
1382 ST_INLN void tok_str_new(TokenString *s);
1383 ST_FUNC TokenString *tok_str_alloc(void);
1384 ST_FUNC void tok_str_free(TokenString *s);
1385 ST_FUNC void tok_str_free_str(int *str);
1386 ST_FUNC void tok_str_add(TokenString *s, int t);
1387 ST_FUNC void tok_str_add_tok(TokenString *s);
1388 ST_INLN void define_push(int v, int macro_type, int *str, Sym *first_arg);
1389 ST_FUNC void define_undef(Sym *s);
1390 ST_INLN Sym *define_find(int v);
1391 ST_FUNC void free_defines(Sym *b);
1392 ST_FUNC void parse_define(void);
1393 ST_FUNC void skip_to_eol(int warn);
1394 ST_FUNC void preprocess(int is_bof);
1395 ST_FUNC void next(void);
1396 ST_INLN void unget_tok(int last_tok);
1397 ST_FUNC void preprocess_start(TCCState *s1, int filetype);
1398 ST_FUNC void preprocess_end(TCCState *s1);
1399 ST_FUNC void tccpp_new(TCCState *s);
1400 ST_FUNC void tccpp_delete(TCCState *s);
1401 ST_FUNC void tccpp_putfile(const char *filename);
1402 ST_FUNC int tcc_preprocess(TCCState *s1);
1403 ST_FUNC void skip(int c);
1404 ST_FUNC NORETURN void expect(const char *msg);
1405 ST_FUNC void pp_error(CString *cs);
1406
1407
1408 /* space excluding newline */
1409 static inline int is_space(int ch) {
1410 return ch == ' ' || ch == '\t' || ch == '\v' || ch == '\f' || ch == '\r';
1411 }
1412 static inline int isid(int c) {
1413 return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_';
1414 }
1415 static inline int isnum(int c) {
1416 return c >= '0' && c <= '9';
1417 }
1418 static inline int isoct(int c) {
1419 return c >= '0' && c <= '7';
1420 }
1421 static inline int toup(int c) {
1422 return (c >= 'a' && c <= 'z') ? c - 'a' + 'A' : c;
1423 }
1424
1425 /* ------------ tccgen.c ------------ */
1426
1427 #define SYM_POOL_NB (8192 / sizeof(Sym))
1428
1429 ST_DATA Sym *global_stack;
1430 ST_DATA Sym *local_stack;
1431 ST_DATA Sym *local_label_stack;
1432 ST_DATA Sym *global_label_stack;
1433 ST_DATA Sym *define_stack;
1434 ST_DATA CType int_type, func_old_type, char_pointer_type;
1435 ST_DATA SValue *vtop;
1436 ST_DATA int rsym, anon_sym, ind, loc;
1437 ST_DATA char debug_modes;
1438
1439 ST_DATA int nocode_wanted; /* true if no code generation wanted for an expression */
1440 ST_DATA int global_expr; /* true if compound literals must be allocated globally (used during initializers parsing */
1441 ST_DATA CType func_vt; /* current function return type (used by return instruction) */
1442 ST_DATA int func_var; /* true if current function is variadic */
1443 ST_DATA int func_vc;
1444 ST_DATA int func_ind;
1445 ST_DATA const char *funcname;
1446
1447 ST_FUNC void tccgen_init(TCCState *s1);
1448 ST_FUNC int tccgen_compile(TCCState *s1);
1449 ST_FUNC void tccgen_finish(TCCState *s1);
1450 ST_FUNC void check_vstack(void);
1451
1452 ST_INLN int is_float(int t);
1453 ST_FUNC int ieee_finite(double d);
1454 ST_FUNC int exact_log2p1(int i);
1455 ST_FUNC void test_lvalue(void);
1456
1457 ST_FUNC ElfSym *elfsym(Sym *);
1458 ST_FUNC void update_storage(Sym *sym);
1459 ST_FUNC void put_extern_sym2(Sym *sym, int sh_num, addr_t value, unsigned long size, int can_add_underscore);
1460 ST_FUNC void put_extern_sym(Sym *sym, Section *section, addr_t value, unsigned long size);
1461 #if PTR_SIZE == 4
1462 ST_FUNC void greloc(Section *s, Sym *sym, unsigned long offset, int type);
1463 #endif
1464 ST_FUNC void greloca(Section *s, Sym *sym, unsigned long offset, int type, addr_t addend);
1465
1466 ST_INLN void sym_free(Sym *sym);
1467 ST_FUNC Sym *sym_push(int v, CType *type, int r, int c);
1468 ST_FUNC void sym_pop(Sym **ptop, Sym *b, int keep);
1469 ST_FUNC Sym *sym_push2(Sym **ps, int v, int t, int c);
1470 ST_FUNC Sym *sym_find2(Sym *s, int v);
1471 ST_INLN Sym *sym_find(int v);
1472 ST_FUNC Sym *label_find(int v);
1473 ST_FUNC Sym *label_push(Sym **ptop, int v, int flags);
1474 ST_FUNC void label_pop(Sym **ptop, Sym *slast, int keep);
1475 ST_INLN Sym *struct_find(int v);
1476
1477 ST_FUNC Sym *global_identifier_push(int v, int t, int c);
1478 ST_FUNC Sym *external_global_sym(int v, CType *type);
1479 ST_FUNC Sym *external_helper_sym(int v);
1480 ST_FUNC void vpush_helper_func(int v);
1481 ST_FUNC void vset(CType *type, int r, int v);
1482 ST_FUNC void vset_VT_CMP(int op);
1483 ST_FUNC void vpushi(int v);
1484 ST_FUNC void vpushv(SValue *v);
1485 ST_FUNC void vpushsym(CType *type, Sym *sym);
1486 ST_FUNC void vswap(void);
1487 ST_FUNC void vrote(SValue *e, int n);
1488 ST_FUNC void vrott(int n);
1489 ST_FUNC void vrotb(int n);
1490 ST_FUNC void vpop(void);
1491 #if PTR_SIZE == 4
1492 ST_FUNC void lexpand(void);
1493 #endif
1494 #ifdef TCC_TARGET_ARM
1495 ST_FUNC int get_reg_ex(int rc, int rc2);
1496 #endif
1497 ST_FUNC void save_reg(int r);
1498 ST_FUNC void save_reg_upstack(int r, int n);
1499 ST_FUNC int get_reg(int rc);
1500 ST_FUNC void save_regs(int n);
1501 ST_FUNC void gaddrof(void);
1502 ST_FUNC int gv(int rc);
1503 ST_FUNC void gv2(int rc1, int rc2);
1504 ST_FUNC void gen_op(int op);
1505 ST_FUNC int type_size(CType *type, int *a);
1506 ST_FUNC void mk_pointer(CType *type);
1507 ST_FUNC void vstore(void);
1508 ST_FUNC void inc(int post, int c);
1509 ST_FUNC CString* parse_mult_str(const char *msg);
1510 ST_FUNC CString* parse_asm_str(void);
1511 ST_FUNC void indir(void);
1512 ST_FUNC void unary(void);
1513 ST_FUNC void gexpr(void);
1514 ST_FUNC int expr_const(void);
1515 #if defined CONFIG_TCC_BCHECK || defined TCC_TARGET_C67
1516 ST_FUNC Sym *get_sym_ref(CType *type, Section *sec, unsigned long offset, unsigned long size);
1517 #endif
1518 #if defined TCC_TARGET_X86_64 && !defined TCC_TARGET_PE
1519 ST_FUNC int classify_x86_64_va_arg(CType *ty);
1520 #endif
1521 #ifdef CONFIG_TCC_BCHECK
1522 ST_FUNC void gbound_args(int nb_args);
1523 ST_DATA int func_bound_add_epilog;
1524 #endif
1525
1526 /* ------------ tccelf.c ------------ */
1527
1528 #define TCC_OUTPUT_FORMAT_ELF 0 /* default output format: ELF */
1529 #define TCC_OUTPUT_FORMAT_BINARY 1 /* binary image output */
1530 #define TCC_OUTPUT_FORMAT_COFF 2 /* COFF */
1531 #define TCC_OUTPUT_DYN TCC_OUTPUT_DLL
1532
1533 #define ARMAG "!<arch>\n" /* For COFF and a.out archives */
1534
1535 typedef struct {
1536 unsigned int n_strx; /* index into string table of name */
1537 unsigned char n_type; /* type of symbol */
1538 unsigned char n_other; /* misc info (usually empty) */
1539 unsigned short n_desc; /* description field */
1540 unsigned int n_value; /* value of symbol */
1541 } Stab_Sym;
1542
1543 ST_FUNC void tccelf_new(TCCState *s);
1544 ST_FUNC void tccelf_delete(TCCState *s);
1545 ST_FUNC void tccelf_begin_file(TCCState *s1);
1546 ST_FUNC void tccelf_end_file(TCCState *s1);
1547 ST_FUNC Section *new_section(TCCState *s1, const char *name, int sh_type, int sh_flags);
1548 ST_FUNC void section_realloc(Section *sec, unsigned long new_size);
1549 ST_FUNC size_t section_add(Section *sec, addr_t size, int align);
1550 ST_FUNC void *section_ptr_add(Section *sec, addr_t size);
1551 ST_FUNC Section *find_section(TCCState *s1, const char *name);
1552 ST_FUNC void free_section(Section *s);
1553 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);
1554 ST_FUNC void init_symtab(Section *s);
1555
1556 ST_FUNC int put_elf_str(Section *s, const char *sym);
1557 ST_FUNC int put_elf_sym(Section *s, addr_t value, unsigned long size, int info, int other, int shndx, const char *name);
1558 ST_FUNC int set_elf_sym(Section *s, addr_t value, unsigned long size, int info, int other, int shndx, const char *name);
1559 ST_FUNC int find_elf_sym(Section *s, const char *name);
1560 ST_FUNC void put_elf_reloc(Section *symtab, Section *s, unsigned long offset, int type, int symbol);
1561 ST_FUNC void put_elf_reloca(Section *symtab, Section *s, unsigned long offset, int type, int symbol, addr_t addend);
1562
1563 ST_FUNC void resolve_common_syms(TCCState *s1);
1564 ST_FUNC void relocate_syms(TCCState *s1, Section *symtab, int do_resolve);
1565 ST_FUNC void relocate_sections(TCCState *s1);
1566
1567 ST_FUNC ssize_t full_read(int fd, void *buf, size_t count);
1568 ST_FUNC void *load_data(int fd, unsigned long file_offset, unsigned long size);
1569 ST_FUNC int tcc_object_type(int fd, ElfW(Ehdr) *h);
1570 ST_FUNC int tcc_load_object_file(TCCState *s1, int fd, unsigned long file_offset);
1571 ST_FUNC int tcc_load_archive(TCCState *s1, int fd, int alacarte);
1572 ST_FUNC void add_array(TCCState *s1, const char *sec, int c);
1573
1574 ST_FUNC struct sym_attr *get_sym_attr(TCCState *s1, int index, int alloc);
1575 ST_FUNC addr_t get_sym_addr(TCCState *s, const char *name, int err, int forc);
1576 ST_FUNC void list_elf_symbols(TCCState *s, void *ctx,
1577 void (*symbol_cb)(void *ctx, const char *name, const void *val));
1578 ST_FUNC int set_global_sym(TCCState *s1, const char *name, Section *sec, addr_t offs);
1579
1580 /* Browse each elem of type <type> in section <sec> starting at elem <startoff>
1581 using variable <elem> */
1582 #define for_each_elem(sec, startoff, elem, type) \
1583 for (elem = (type *) sec->data + startoff; \
1584 elem < (type *) (sec->data + sec->data_offset); elem++)
1585
1586 #ifndef ELF_OBJ_ONLY
1587 ST_FUNC int tcc_load_dll(TCCState *s1, int fd, const char *filename, int level);
1588 ST_FUNC int tcc_load_ldscript(TCCState *s1, int fd);
1589 ST_FUNC void tccelf_add_crtbegin(TCCState *s1);
1590 ST_FUNC void tccelf_add_crtend(TCCState *s1);
1591 #endif
1592 #ifndef TCC_TARGET_PE
1593 ST_FUNC void tcc_add_runtime(TCCState *s1);
1594 #endif
1595
1596 /* ------------ xxx-link.c ------------ */
1597
1598 #if !defined ELF_OBJ_ONLY || defined TCC_TARGET_MACHO
1599 ST_FUNC int code_reloc (int reloc_type);
1600 ST_FUNC int gotplt_entry_type (int reloc_type);
1601 /* Whether to generate a GOT/PLT entry and when. NO_GOTPLT_ENTRY is first so
1602 that unknown relocation don't create a GOT or PLT entry */
1603 enum gotplt_entry {
1604 NO_GOTPLT_ENTRY, /* never generate (eg. GLOB_DAT & JMP_SLOT relocs) */
1605 BUILD_GOT_ONLY, /* only build GOT (eg. TPOFF relocs) */
1606 AUTO_GOTPLT_ENTRY, /* generate if sym is UNDEF */
1607 ALWAYS_GOTPLT_ENTRY /* always generate (eg. PLTOFF relocs) */
1608 };
1609 #define NEED_RELOC_TYPE
1610
1611 #if !defined TCC_TARGET_MACHO || defined TCC_IS_NATIVE
1612 ST_FUNC unsigned create_plt_entry(TCCState *s1, unsigned got_offset, struct sym_attr *attr);
1613 ST_FUNC void relocate_plt(TCCState *s1);
1614 ST_FUNC void build_got_entries(TCCState *s1, int got_sym); /* in tccelf.c */
1615 #define NEED_BUILD_GOT
1616
1617 #endif
1618 #endif
1619
1620 ST_FUNC void relocate(TCCState *s1, ElfW_Rel *rel, int type, unsigned char *ptr, addr_t addr, addr_t val);
1621
1622 /* ------------ xxx-gen.c ------------ */
1623 ST_DATA const char * const target_machine_defs;
1624 ST_DATA const int reg_classes[NB_REGS];
1625
1626 ST_FUNC void gsym_addr(int t, int a);
1627 ST_FUNC void gsym(int t);
1628 ST_FUNC void load(int r, SValue *sv);
1629 ST_FUNC void store(int r, SValue *v);
1630 ST_FUNC int gfunc_sret(CType *vt, int variadic, CType *ret, int *align, int *regsize);
1631 ST_FUNC void gfunc_call(int nb_args);
1632 ST_FUNC void gfunc_prolog(Sym *func_sym);
1633 ST_FUNC void gfunc_epilog(void);
1634 ST_FUNC void gen_fill_nops(int);
1635 ST_FUNC int gjmp(int t);
1636 ST_FUNC void gjmp_addr(int a);
1637 ST_FUNC int gjmp_cond(int op, int t);
1638 ST_FUNC int gjmp_append(int n, int t);
1639 ST_FUNC void gen_opi(int op);
1640 ST_FUNC void gen_opf(int op);
1641 ST_FUNC void gen_cvt_ftoi(int t);
1642 ST_FUNC void gen_cvt_itof(int t);
1643 ST_FUNC void gen_cvt_ftof(int t);
1644 ST_FUNC void ggoto(void);
1645 #ifndef TCC_TARGET_C67
1646 ST_FUNC void o(unsigned int c);
1647 #endif
1648 ST_FUNC void gen_vla_sp_save(int addr);
1649 ST_FUNC void gen_vla_sp_restore(int addr);
1650 ST_FUNC void gen_vla_alloc(CType *type, int align);
1651
1652 static inline uint16_t read16le(unsigned char *p) {
1653 return p[0] | (uint16_t)p[1] << 8;
1654 }
1655 static inline void write16le(unsigned char *p, uint16_t x) {
1656 p[0] = x & 255; p[1] = x >> 8 & 255;
1657 }
1658 static inline uint32_t read32le(unsigned char *p) {
1659 return read16le(p) | (uint32_t)read16le(p + 2) << 16;
1660 }
1661 static inline void write32le(unsigned char *p, uint32_t x) {
1662 write16le(p, x); write16le(p + 2, x >> 16);
1663 }
1664 static inline void add32le(unsigned char *p, int32_t x) {
1665 write32le(p, read32le(p) + x);
1666 }
1667 static inline uint64_t read64le(unsigned char *p) {
1668 return read32le(p) | (uint64_t)read32le(p + 4) << 32;
1669 }
1670 static inline void write64le(unsigned char *p, uint64_t x) {
1671 write32le(p, x); write32le(p + 4, x >> 32);
1672 }
1673 static inline void add64le(unsigned char *p, int64_t x) {
1674 write64le(p, read64le(p) + x);
1675 }
1676
1677 /* ------------ i386-gen.c ------------ */
1678 #if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64 || defined TCC_TARGET_ARM
1679 ST_FUNC void g(int c);
1680 ST_FUNC void gen_le16(int c);
1681 ST_FUNC void gen_le32(int c);
1682 #endif
1683 #if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64
1684 ST_FUNC void gen_addr32(int r, Sym *sym, int c);
1685 ST_FUNC void gen_addrpc32(int r, Sym *sym, int c);
1686 ST_FUNC void gen_cvt_csti(int t);
1687 ST_FUNC void gen_increment_tcov (SValue *sv);
1688 #endif
1689
1690 /* ------------ x86_64-gen.c ------------ */
1691 #ifdef TCC_TARGET_X86_64
1692 ST_FUNC void gen_addr64(int r, Sym *sym, int64_t c);
1693 ST_FUNC void gen_opl(int op);
1694 #ifdef TCC_TARGET_PE
1695 ST_FUNC void gen_vla_result(int addr);
1696 #endif
1697 ST_FUNC void gen_cvt_sxtw(void);
1698 ST_FUNC void gen_cvt_csti(int t);
1699 #endif
1700
1701 /* ------------ arm-gen.c ------------ */
1702 #ifdef TCC_TARGET_ARM
1703 #if defined(TCC_ARM_EABI) && !defined(CONFIG_TCC_ELFINTERP)
1704 PUB_FUNC const char *default_elfinterp(struct TCCState *s);
1705 #endif
1706 ST_FUNC void arm_init(struct TCCState *s);
1707 ST_FUNC void gen_increment_tcov (SValue *sv);
1708 #endif
1709
1710 /* ------------ arm64-gen.c ------------ */
1711 #ifdef TCC_TARGET_ARM64
1712 ST_FUNC void gen_opl(int op);
1713 ST_FUNC void gfunc_return(CType *func_type);
1714 ST_FUNC void gen_va_start(void);
1715 ST_FUNC void gen_va_arg(CType *t);
1716 ST_FUNC void gen_clear_cache(void);
1717 ST_FUNC void gen_cvt_sxtw(void);
1718 ST_FUNC void gen_cvt_csti(int t);
1719 ST_FUNC void gen_increment_tcov (SValue *sv);
1720 #endif
1721
1722 /* ------------ riscv64-gen.c ------------ */
1723 #ifdef TCC_TARGET_RISCV64
1724 ST_FUNC void gen_opl(int op);
1725 //ST_FUNC void gfunc_return(CType *func_type);
1726 ST_FUNC void gen_va_start(void);
1727 ST_FUNC void arch_transfer_ret_regs(int);
1728 ST_FUNC void gen_cvt_sxtw(void);
1729 ST_FUNC void gen_increment_tcov (SValue *sv);
1730 #endif
1731
1732 /* ------------ c67-gen.c ------------ */
1733 #ifdef TCC_TARGET_C67
1734 #endif
1735
1736 /* ------------ tcccoff.c ------------ */
1737 #ifdef TCC_TARGET_COFF
1738 ST_FUNC int tcc_output_coff(TCCState *s1, FILE *f);
1739 ST_FUNC int tcc_load_coff(TCCState * s1, int fd);
1740 #endif
1741
1742 /* ------------ tccasm.c ------------ */
1743 ST_FUNC void asm_instr(void);
1744 ST_FUNC void asm_global_instr(void);
1745 ST_FUNC int tcc_assemble(TCCState *s1, int do_preprocess);
1746 #ifdef CONFIG_TCC_ASM
1747 ST_FUNC int find_constraint(ASMOperand *operands, int nb_operands, const char *name, const char **pp);
1748 ST_FUNC Sym* get_asm_sym(int name, Sym *csym);
1749 ST_FUNC void asm_expr(TCCState *s1, ExprValue *pe);
1750 ST_FUNC int asm_int_expr(TCCState *s1);
1751 /* ------------ i386-asm.c ------------ */
1752 ST_FUNC void gen_expr32(ExprValue *pe);
1753 #ifdef TCC_TARGET_X86_64
1754 ST_FUNC void gen_expr64(ExprValue *pe);
1755 #endif
1756 ST_FUNC void asm_opcode(TCCState *s1, int opcode);
1757 ST_FUNC int asm_parse_regvar(int t);
1758 ST_FUNC void asm_compute_constraints(ASMOperand *operands, int nb_operands, int nb_outputs, const uint8_t *clobber_regs, int *pout_reg);
1759 ST_FUNC void subst_asm_operand(CString *add_str, SValue *sv, int modifier);
1760 ST_FUNC void asm_gen_code(ASMOperand *operands, int nb_operands, int nb_outputs, int is_output, uint8_t *clobber_regs, int out_reg);
1761 ST_FUNC void asm_clobber(uint8_t *clobber_regs, const char *str);
1762 #endif
1763
1764 /* ------------ tccpe.c -------------- */
1765 #ifdef TCC_TARGET_PE
1766 ST_FUNC int pe_load_file(struct TCCState *s1, int fd, const char *filename);
1767 ST_FUNC int pe_output_file(TCCState * s1, const char *filename);
1768 ST_FUNC int pe_putimport(TCCState *s1, int dllindex, const char *name, addr_t value);
1769 #if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64
1770 ST_FUNC SValue *pe_getimport(SValue *sv, SValue *v2);
1771 #endif
1772 #ifdef TCC_TARGET_X86_64
1773 ST_FUNC void pe_add_unwind_data(unsigned start, unsigned end, unsigned stack);
1774 #endif
1775 PUB_FUNC int tcc_get_dllexports(const char *filename, char **pp);
1776 /* symbol properties stored in Elf32_Sym->st_other */
1777 # define ST_PE_EXPORT 0x10
1778 # define ST_PE_IMPORT 0x20
1779 # define ST_PE_STDCALL 0x40
1780 #endif
1781 #define ST_ASM_SET 0x04
1782
1783 /* ------------ tccmacho.c ----------------- */
1784 #ifdef TCC_TARGET_MACHO
1785 ST_FUNC int macho_output_file(TCCState * s1, const char *filename);
1786 ST_FUNC int macho_load_dll(TCCState *s1, int fd, const char *filename, int lev);
1787 ST_FUNC int macho_load_tbd(TCCState *s1, int fd, const char *filename, int lev);
1788 #ifdef TCC_IS_NATIVE
1789 ST_FUNC void tcc_add_macos_sdkpath(TCCState* s);
1790 ST_FUNC const char* macho_tbd_soname(const char* filename);
1791 #endif
1792 #endif
1793 /* ------------ tccrun.c ----------------- */
1794 #ifdef TCC_IS_NATIVE
1795 #ifdef CONFIG_TCC_STATIC
1796 #define RTLD_LAZY 0x001
1797 #define RTLD_NOW 0x002
1798 #define RTLD_GLOBAL 0x100
1799 #define RTLD_DEFAULT NULL
1800 /* dummy function for profiling */
1801 ST_FUNC void *dlopen(const char *filename, int flag);
1802 ST_FUNC void dlclose(void *p);
1803 ST_FUNC const char *dlerror(void);
1804 ST_FUNC void *dlsym(void *handle, const char *symbol);
1805 #endif
1806 ST_FUNC void tcc_run_free(TCCState *s1);
1807 #endif
1808
1809 /* ------------ tcctools.c ----------------- */
1810 #if 0 /* included in tcc.c */
1811 ST_FUNC int tcc_tool_ar(TCCState *s, int argc, char **argv);
1812 #ifdef TCC_TARGET_PE
1813 ST_FUNC int tcc_tool_impdef(TCCState *s, int argc, char **argv);
1814 #endif
1815 ST_FUNC int tcc_tool_cross(TCCState *s, char **argv, int option);
1816 ST_FUNC int gen_makedeps(TCCState *s, const char *target, const char *filename);
1817 #endif
1818
1819 /* ------------ tccdbg.c ------------ */
1820
1821 ST_FUNC void tcc_debug_new(TCCState *s);
1822
1823 ST_FUNC void tcc_debug_start(TCCState *s1);
1824 ST_FUNC void tcc_debug_end(TCCState *s1);
1825 ST_FUNC void tcc_debug_bincl(TCCState *s1);
1826 ST_FUNC void tcc_debug_eincl(TCCState *s1);
1827 ST_FUNC void tcc_debug_newfile(TCCState *s1);
1828
1829 ST_FUNC void tcc_debug_line(TCCState *s1);
1830 ST_FUNC void tcc_add_debug_info(TCCState *s1, int param, Sym *s, Sym *e);
1831 ST_FUNC void tcc_debug_funcstart(TCCState *s1, Sym *sym);
1832 ST_FUNC void tcc_debug_prolog_epilog(TCCState *s1, int value);
1833 ST_FUNC void tcc_debug_funcend(TCCState *s1, int size);
1834 ST_FUNC void tcc_debug_extern_sym(TCCState *s1, Sym *sym, int sh_num, int sym_bind, int sym_type);
1835 ST_FUNC void tcc_debug_typedef(TCCState *s1, Sym *sym);
1836 ST_FUNC void tcc_debug_stabn(TCCState *s1, int type, int value);
1837 ST_FUNC void tcc_debug_fix_anon(TCCState *s1, CType *t);
1838
1839 ST_FUNC void tcc_tcov_start(TCCState *s1);
1840 ST_FUNC void tcc_tcov_end(TCCState *s1);
1841 ST_FUNC void tcc_tcov_check_line(TCCState *s1, int start);
1842 ST_FUNC void tcc_tcov_block_end(TCCState *s1, int line);
1843 ST_FUNC void tcc_tcov_block_begin(TCCState *s1);
1844 ST_FUNC void tcc_tcov_reset_ind(TCCState *s1);
1845
1846 #define stab_section s1->stab_section
1847 #define stabstr_section stab_section->link
1848 #define tcov_section s1->tcov_section
1849 #define dwarf_info_section s1->dwarf_info_section
1850 #define dwarf_abbrev_section s1->dwarf_abbrev_section
1851 #define dwarf_line_section s1->dwarf_line_section
1852 #define dwarf_aranges_section s1->dwarf_aranges_section
1853 #define dwarf_str_section s1->dwarf_str_section
1854 #define dwarf_line_str_section s1->dwarf_line_str_section
1855
1856 /* default dwarf version for "-gdwarf" */
1857 #ifdef TCC_TARGET_MACHO
1858 # define DEFAULT_DWARF_VERSION 2
1859 #else
1860 # define DEFAULT_DWARF_VERSION 5
1861 #endif
1862
1863 /* default dwarf version for "-g". use 0 to emit stab debug infos */
1864 #ifndef DWARF_VERSION
1865 # define DWARF_VERSION 0 //DEFAULT_DWARF_VERSION
1866 #endif
1867
1868 #if defined TCC_TARGET_PE
1869 # define R_DATA_32DW 'Z' /* fake code to avoid DLL relocs */
1870 #elif defined TCC_TARGET_X86_64
1871 # define R_DATA_32DW R_X86_64_32
1872 #else
1873 # define R_DATA_32DW R_DATA_32
1874 #endif
1875
1876 /********************************************************/
1877 #if CONFIG_TCC_SEMLOCK
1878 #if defined _WIN32
1879 typedef struct { int init; CRITICAL_SECTION cr; } TCCSem;
1880 #elif defined __APPLE__
1881 #include <dispatch/dispatch.h>
1882 typedef struct { int init; dispatch_semaphore_t sem; } TCCSem;
1883 #else
1884 #include <semaphore.h>
1885 typedef struct { int init; sem_t sem; } TCCSem;
1886 #endif
1887 ST_FUNC void wait_sem(TCCSem *p);
1888 ST_FUNC void post_sem(TCCSem *p);
1889 #define TCC_SEM(s) TCCSem s
1890 #define WAIT_SEM wait_sem
1891 #define POST_SEM post_sem
1892 #else
1893 #define TCC_SEM(s)
1894 #define WAIT_SEM(p)
1895 #define POST_SEM(p)
1896 #endif
1897
1898 /********************************************************/
1899 #undef ST_DATA
1900 #if ONE_SOURCE
1901 #define ST_DATA static
1902 #else
1903 #define ST_DATA
1904 #endif
1905 /********************************************************/
1906
1907 #define text_section TCC_STATE_VAR(text_section)
1908 #define data_section TCC_STATE_VAR(data_section)
1909 #define rodata_section TCC_STATE_VAR(rodata_section)
1910 #define bss_section TCC_STATE_VAR(bss_section)
1911 #define common_section TCC_STATE_VAR(common_section)
1912 #define cur_text_section TCC_STATE_VAR(cur_text_section)
1913 #define bounds_section TCC_STATE_VAR(bounds_section)
1914 #define lbounds_section TCC_STATE_VAR(lbounds_section)
1915 #define symtab_section TCC_STATE_VAR(symtab_section)
1916 #define gnu_ext TCC_STATE_VAR(gnu_ext)
1917 #define tcc_error_noabort TCC_SET_STATE(_tcc_error_noabort)
1918 #define tcc_error TCC_SET_STATE(_tcc_error)
1919 #define tcc_warning TCC_SET_STATE(_tcc_warning)
1920
1921 #define total_idents TCC_STATE_VAR(total_idents)
1922 #define total_lines TCC_STATE_VAR(total_lines)
1923 #define total_bytes TCC_STATE_VAR(total_bytes)
1924
1925 PUB_FUNC void tcc_enter_state(TCCState *s1);
1926 PUB_FUNC void tcc_exit_state(TCCState *s1);
1927
1928 /* conditional warning depending on switch */
1929 #define tcc_warning_c(sw) TCC_SET_STATE((\
1930 tcc_state->warn_num = offsetof(TCCState, sw) \
1931 - offsetof(TCCState, warn_none), _tcc_warning))
1932
1933 /********************************************************/
1934 #endif /* _TCC_H */
1935
1936 #undef TCC_STATE_VAR
1937 #undef TCC_SET_STATE
1938
1939 #ifdef USING_GLOBALS
1940 # define TCC_STATE_VAR(sym) tcc_state->sym
1941 # define TCC_SET_STATE(fn) fn
1942 # undef USING_GLOBALS
1943 # undef _tcc_error
1944 #else
1945 # define TCC_STATE_VAR(sym) s1->sym
1946 # define TCC_SET_STATE(fn) (tcc_enter_state(s1),fn)
1947 # define _tcc_error use_tcc_error_noabort
1948 #endif
1949
1950 #if CONFIG_TCC_SEMLOCK && TCC_SEM_IMPL
1951 #undef TCC_SEM_IMPL
1952 #if defined _WIN32
1953 ST_FUNC void wait_sem(TCCSem *p)
1954 {
1955 if (!p->init)
1956 InitializeCriticalSection(&p->cr), p->init = 1;
1957 EnterCriticalSection(&p->cr);
1958 }
1959 ST_FUNC void post_sem(TCCSem *p)
1960 {
1961 LeaveCriticalSection(&p->cr);
1962 }
1963 #elif defined __APPLE__
1964 ST_FUNC void wait_sem(TCCSem *p)
1965 {
1966 if (!p->init)
1967 p->sem = dispatch_semaphore_create(1), p->init = 1;
1968 dispatch_semaphore_wait(p->sem, DISPATCH_TIME_FOREVER);
1969 }
1970 ST_FUNC void post_sem(TCCSem *p)
1971 {
1972 dispatch_semaphore_signal(p->sem);
1973 }
1974 #else
1975 ST_FUNC void wait_sem(TCCSem *p)
1976 {
1977 if (!p->init)
1978 sem_init(&p->sem, 0, 1), p->init = 1;
1979 while (sem_wait(&p->sem) < 0 && errno == EINTR);
1980 }
1981 ST_FUNC void post_sem(TCCSem *p)
1982 {
1983 sem_post(&p->sem);
1984 }
1985 #endif
1986 #endif
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