tcc.h

   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 #define _GNU_SOURCE
  22 #include "config.h"
  23
  24 #ifdef CONFIG_TCCBOOT
  25
  26 #include "tccboot.h"
  27 #define CONFIG_TCC_STATIC
  28
  29 #else
  30
  31 #include <stdlib.h>
  32 #include <stdio.h>
  33 #include <stdarg.h>
  34 #include <string.h>
  35 #include <errno.h>
  36 #include <math.h>
  37 #include <signal.h>
  38 #include <fcntl.h>
  39 #include <setjmp.h>
  40 #include <time.h>
  41
  42 #ifdef _WIN32
  43 #include <windows.h>
  44 #include <sys/timeb.h>
  45 #include <io.h> /* open, close etc. */
  46 #include <direct.h> /* getcwd */
  47 #define inline __inline
  48 #define inp next_inp
  49 #endif
  50
  51 #ifndef _WIN32
  52 #include <unistd.h>
  53 #include <sys/time.h>
  54 #include <sys/ucontext.h>
  55 #include <sys/mman.h>
  56 #endif
  57
  58 #endif /* !CONFIG_TCCBOOT */
  59
  60 #ifndef PAGESIZE
  61 #define PAGESIZE 4096
  62 #endif
  63
  64 #include "elf.h"
  65 #include "stab.h"
  66
  67 #ifndef O_BINARY
  68 #define O_BINARY 0
  69 #endif
  70
  71 #include "libtcc.h"
  72
  73 /* parser debug */
  74 //#define PARSE_DEBUG
  75 /* preprocessor debug */
  76 //#define PP_DEBUG
  77 /* include file debug */
  78 //#define INC_DEBUG
  79
  80 //#define MEM_DEBUG
  81
  82 /* assembler debug */
  83 //#define ASM_DEBUG
  84
  85 /* target selection */
  86 //#define TCC_TARGET_I386   /* i386 code generator */
  87 //#define TCC_TARGET_ARM    /* ARMv4 code generator */
  88 //#define TCC_TARGET_C67    /* TMS320C67xx code generator */
  89 //#define TCC_TARGET_X86_64 /* x86-64 code generator */
  90
  91 /* default target is I386 */
  92 #if !defined(TCC_TARGET_I386) && !defined(TCC_TARGET_ARM) && \
  93     !defined(TCC_TARGET_C67) && !defined(TCC_TARGET_X86_64)
  94 #define TCC_TARGET_I386
  95 #endif
  96
  97 #if !defined(_WIN32) && !defined(TCC_UCLIBC) && !defined(TCC_TARGET_ARM) && \
  98     !defined(TCC_TARGET_C67) && !defined(TCC_TARGET_X86_64)
  99 #define CONFIG_TCC_BCHECK /* enable bound checking code */
 100 #endif
 101
 102 #if defined(_WIN32) && !defined(TCC_TARGET_PE)
 103 #define CONFIG_TCC_STATIC
 104 #endif
 105
 106 /* define it to include assembler support */
 107 #if !defined(TCC_TARGET_ARM) && !defined(TCC_TARGET_C67) && \
 108     !defined(TCC_TARGET_X86_64)
 109 #define CONFIG_TCC_ASM
 110 #endif
 111
 112 /* object format selection */
 113 #if defined(TCC_TARGET_C67)
 114 #define TCC_TARGET_COFF
 115 #endif
 116
 117 #if !defined(_WIN32) && !defined(CONFIG_TCCBOOT)
 118 #define CONFIG_TCC_BACKTRACE
 119 #endif
 120
 121 #define FALSE 0
 122 #define false 0
 123 #define TRUE 1
 124 #define true 1
 125 typedef int BOOL;
 126
 127 /* path to find crt1.o, crti.o and crtn.o. Only needed when generating
 128    executables or dlls */
 129 #define CONFIG_TCC_CRT_PREFIX CONFIG_SYSROOT "/usr/lib"
 130
 131 #define INCLUDE_STACK_SIZE  32
 132 #define IFDEF_STACK_SIZE    64
 133 #define VSTACK_SIZE         256
 134 #define STRING_MAX_SIZE     1024
 135 #define PACK_STACK_SIZE     8
 136
 137 #define TOK_HASH_SIZE       8192 /* must be a power of two */
 138 #define TOK_ALLOC_INCR      512  /* must be a power of two */
 139 #define TOK_MAX_SIZE        4 /* token max size in int unit when stored in string */
 140
 141 /* token symbol management */
 142 typedef struct TokenSym {
 143     struct TokenSym *hash_next;
 144     struct Sym *sym_define; /* direct pointer to define */
 145     struct Sym *sym_label; /* direct pointer to label */
 146     struct Sym *sym_struct; /* direct pointer to structure */
 147     struct Sym *sym_identifier; /* direct pointer to identifier */
 148     int tok; /* token number */
 149     int len;
 150     char str[1];
 151 } TokenSym;
 152
 153 #ifdef TCC_TARGET_PE
 154 typedef unsigned short nwchar_t;
 155 #else
 156 typedef int nwchar_t;
 157 #endif
 158
 159 typedef struct CString {
 160     int size; /* size in bytes */
 161     void *data; /* either 'char *' or 'nwchar_t *' */
 162     int size_allocated;
 163     void *data_allocated; /* if non NULL, data has been malloced */
 164 } CString;
 165
 166 /* type definition */
 167 typedef struct CType {
 168     int t;
 169     struct Sym *ref;
 170 } CType;
 171
 172 /* constant value */
 173 typedef union CValue {
 174     long double ld;
 175     double d;
 176     float f;
 177     int i;
 178     unsigned int ui;
 179     unsigned int ul; /* address (should be unsigned long on 64 bit cpu) */
 180     long long ll;
 181     unsigned long long ull;
 182     struct CString *cstr;
 183     void *ptr;
 184     int tab[1];
 185 } CValue;
 186
 187 /* value on stack */
 188 typedef struct SValue {
 189     CType type;      /* type */
 190     unsigned short r;      /* register + flags */
 191     unsigned short r2;     /* second register, used for 'long long'
 192                               type. If not used, set to VT_CONST */
 193     CValue c;              /* constant, if VT_CONST */
 194     struct Sym *sym;       /* symbol, if (VT_SYM | VT_CONST) */
 195 } SValue;
 196
 197 /* symbol management */
 198 typedef struct Sym {
 199     int v;    /* symbol token */
 200     long r;    /* associated register */
 201     union {
 202         long c;    /* associated number */
 203         int *d;   /* define token stream */
 204     };
 205     CType type;    /* associated type */
 206     struct Sym *next; /* next related symbol */
 207     struct Sym *prev; /* prev symbol in stack */
 208     struct Sym *prev_tok; /* previous symbol for this token */
 209 } Sym;
 210
 211 /* section definition */
 212 /* XXX: use directly ELF structure for parameters ? */
 213 /* special flag to indicate that the section should not be linked to
 214    the other ones */
 215 #define SHF_PRIVATE 0x80000000
 216
 217 /* special flag, too */
 218 #define SECTION_ABS ((void *)1)
 219
 220 typedef struct Section {
 221     unsigned long data_offset; /* current data offset */
 222     unsigned char *data;       /* section data */
 223     unsigned long data_allocated; /* used for realloc() handling */
 224     int sh_name;             /* elf section name (only used during output) */
 225     int sh_num;              /* elf section number */
 226     int sh_type;             /* elf section type */
 227     int sh_flags;            /* elf section flags */
 228     int sh_info;             /* elf section info */
 229     int sh_addralign;        /* elf section alignment */
 230     int sh_entsize;          /* elf entry size */
 231     unsigned long sh_size;   /* section size (only used during output) */
 232     unsigned long sh_addr;      /* address at which the section is relocated */
 233     unsigned long sh_offset;    /* file offset */
 234     int nb_hashed_syms;      /* used to resize the hash table */
 235     struct Section *link;    /* link to another section */
 236     struct Section *reloc;   /* corresponding section for relocation, if any */
 237     struct Section *hash;     /* hash table for symbols */
 238     struct Section *next;
 239     char name[1];           /* section name */
 240 } Section;
 241
 242 typedef struct DLLReference {
 243     int level;
 244     void *handle;
 245     char name[1];
 246 } DLLReference;
 247
 248 /* GNUC attribute definition */
 249 typedef struct AttributeDef {
 250     int aligned;
 251     int packed;
 252     Section *section;
 253     int func_attr; /* calling convention, exports, ... */
 254 } AttributeDef;
 255
 256 /* -------------------------------------------------- */
 257 /* gr: wrappers for casting sym->r for other purposes */
 258 typedef struct {
 259     unsigned
 260       func_call : 8,
 261       func_args : 8,
 262       func_export : 1;
 263 } func_attr_t;
 264
 265 #define FUNC_CALL(r) (((func_attr_t*)&(r))->func_call)
 266 #define FUNC_EXPORT(r) (((func_attr_t*)&(r))->func_export)
 267 #define FUNC_ARGS(r) (((func_attr_t*)&(r))->func_args)
 268 /* -------------------------------------------------- */
 269
 270 #define SYM_STRUCT     0x40000000 /* struct/union/enum symbol space */
 271 #define SYM_FIELD      0x20000000 /* struct/union field symbol space */
 272 #define SYM_FIRST_ANOM 0x10000000 /* first anonymous sym */
 273
 274 /* stored in 'Sym.c' field */
 275 #define FUNC_NEW       1 /* ansi function prototype */
 276 #define FUNC_OLD       2 /* old function prototype */
 277 #define FUNC_ELLIPSIS  3 /* ansi function prototype with ... */
 278
 279 /* stored in 'Sym.r' field */
 280 #define FUNC_CDECL     0 /* standard c call */
 281 #define FUNC_STDCALL   1 /* pascal c call */
 282 #define FUNC_FASTCALL1 2 /* first param in %eax */
 283 #define FUNC_FASTCALL2 3 /* first parameters in %eax, %edx */
 284 #define FUNC_FASTCALL3 4 /* first parameter in %eax, %edx, %ecx */
 285 #define FUNC_FASTCALLW 5 /* first parameter in %ecx, %edx */
 286
 287 /* field 'Sym.t' for macros */
 288 #define MACRO_OBJ      0 /* object like macro */
 289 #define MACRO_FUNC     1 /* function like macro */
 290
 291 /* field 'Sym.r' for C labels */
 292 #define LABEL_DEFINED  0 /* label is defined */
 293 #define LABEL_FORWARD  1 /* label is forward defined */
 294 #define LABEL_DECLARED 2 /* label is declared but never used */
 295
 296 /* type_decl() types */
 297 #define TYPE_ABSTRACT  1 /* type without variable */
 298 #define TYPE_DIRECT    2 /* type with variable */
 299
 300 #define IO_BUF_SIZE 8192
 301
 302 typedef struct BufferedFile {
 303     uint8_t *buf_ptr;
 304     uint8_t *buf_end;
 305     int fd;
 306     int line_num;    /* current line number - here to simplify code */
 307     int ifndef_macro;  /* #ifndef macro / #endif search */
 308     int ifndef_macro_saved; /* saved ifndef_macro */
 309     int *ifdef_stack_ptr; /* ifdef_stack value at the start of the file */
 310     char inc_type;          /* type of include */
 311     char inc_filename[512]; /* filename specified by the user */
 312     char filename[1024];    /* current filename - here to simplify code */
 313     unsigned char buffer[IO_BUF_SIZE + 1]; /* extra size for CH_EOB char */
 314 } BufferedFile;
 315
 316 #define CH_EOB   '\\'       /* end of buffer or '\0' char in file */
 317 #define CH_EOF   (-1)   /* end of file */
 318
 319 /* parsing state (used to save parser state to reparse part of the
 320    source several times) */
 321 typedef struct ParseState {
 322     int *macro_ptr;
 323     int line_num;
 324     int tok;
 325     CValue tokc;
 326 } ParseState;
 327
 328 /* used to record tokens */
 329 typedef struct TokenString {
 330     int *str;
 331     int len;
 332     int allocated_len;
 333     int last_line_num;
 334 } TokenString;
 335
 336 /* inline functions */
 337 typedef struct InlineFunc {
 338     int *token_str;
 339     Sym *sym;
 340     char filename[1];
 341 } InlineFunc;
 342
 343 /* include file cache, used to find files faster and also to eliminate
 344    inclusion if the include file is protected by #ifndef ... #endif */
 345 typedef struct CachedInclude {
 346     int ifndef_macro;
 347     int hash_next; /* -1 if none */
 348     char type; /* '"' or '>' to give include type */
 349     char filename[1]; /* path specified in #include */
 350 } CachedInclude;
 351
 352 #define CACHED_INCLUDES_HASH_SIZE 512
 353
 354 #ifdef CONFIG_TCC_ASM
 355 typedef struct ExprValue {
 356     uint32_t v;
 357     Sym *sym;
 358 } ExprValue;
 359
 360 #define MAX_ASM_OPERANDS 30
 361 typedef struct ASMOperand {
 362     int id; /* GCC 3 optionnal identifier (0 if number only supported */
 363     char *constraint;
 364     char asm_str[16]; /* computed asm string for operand */
 365     SValue *vt; /* C value of the expression */
 366     int ref_index; /* if >= 0, gives reference to a output constraint */
 367     int input_index; /* if >= 0, gives reference to an input constraint */
 368     int priority; /* priority, used to assign registers */
 369     int reg; /* if >= 0, register number used for this operand */
 370     int is_llong; /* true if double register value */
 371     int is_memory; /* true if memory operand */
 372     int is_rw;     /* for '+' modifier */
 373 } ASMOperand;
 374 #endif
 375
 376 struct TCCState {
 377     int output_type;
 378
 379     BufferedFile **include_stack_ptr;
 380     int *ifdef_stack_ptr;
 381
 382     /* include file handling */
 383     char **include_paths;
 384     int nb_include_paths;
 385     char **sysinclude_paths;
 386     int nb_sysinclude_paths;
 387     CachedInclude **cached_includes;
 388     int nb_cached_includes;
 389
 390     char **library_paths;
 391     int nb_library_paths;
 392
 393     /* array of all loaded dlls (including those referenced by loaded
 394        dlls) */
 395     DLLReference **loaded_dlls;
 396     int nb_loaded_dlls;
 397
 398     /* sections */
 399     Section **sections;
 400     int nb_sections; /* number of sections, including first dummy section */
 401
 402     Section **priv_sections;
 403     int nb_priv_sections; /* number of private sections */
 404
 405     /* got handling */
 406     Section *got;
 407     Section *plt;
 408     unsigned long *got_offsets;
 409     int nb_got_offsets;
 410     /* give the correspondance from symtab indexes to dynsym indexes */
 411     int *symtab_to_dynsym;
 412
 413     /* temporary dynamic symbol sections (for dll loading) */
 414     Section *dynsymtab_section;
 415     /* exported dynamic symbol section */
 416     Section *dynsym;
 417
 418     int nostdinc; /* if true, no standard headers are added */
 419     int nostdlib; /* if true, no standard libraries are added */
 420     int nocommon; /* if true, do not use common symbols for .bss data */
 421
 422     /* if true, static linking is performed */
 423     int static_link;
 424
 425     /* soname as specified on the command line (-soname) */
 426     const char *soname;
 427
 428     /* if true, all symbols are exported */
 429     int rdynamic;
 430
 431     /* if true, only link in referenced objects from archive */
 432     int alacarte_link;
 433
 434     /* address of text section */
 435     unsigned long text_addr;
 436     int has_text_addr;
 437
 438     /* output format, see TCC_OUTPUT_FORMAT_xxx */
 439     int output_format;
 440
 441     /* C language options */
 442     int char_is_unsigned;
 443     int leading_underscore;
 444
 445     /* warning switches */
 446     int warn_write_strings;
 447     int warn_unsupported;
 448     int warn_error;
 449     int warn_none;
 450     int warn_implicit_function_declaration;
 451
 452     /* display some information during compilation */
 453     int verbose;
 454     /* compile with debug symbol (and use them if error during execution) */
 455     int do_debug;
 456     /* compile with built-in memory and bounds checker */
 457     int do_bounds_check;
 458     /* give the path of the tcc libraries */
 459     const char *tcc_lib_path;
 460
 461     /* error handling */
 462     void *error_opaque;
 463     void (*error_func)(void *opaque, const char *msg);
 464     int error_set_jmp_enabled;
 465     jmp_buf error_jmp_buf;
 466     int nb_errors;
 467
 468     /* tiny assembler state */
 469     Sym *asm_labels;
 470
 471     /* see include_stack_ptr */
 472     BufferedFile *include_stack[INCLUDE_STACK_SIZE];
 473
 474     /* see ifdef_stack_ptr */
 475     int ifdef_stack[IFDEF_STACK_SIZE];
 476
 477     /* see cached_includes */
 478     int cached_includes_hash[CACHED_INCLUDES_HASH_SIZE];
 479
 480     /* pack stack */
 481     int pack_stack[PACK_STACK_SIZE];
 482     int *pack_stack_ptr;
 483
 484     /* output file for preprocessing */
 485     FILE *outfile;
 486
 487     /* for tcc_relocate */
 488     int runtime_added;
 489
 490     struct InlineFunc **inline_fns;
 491     int nb_inline_fns;
 492
 493 #ifdef TCC_TARGET_X86_64
 494     /* write PLT and GOT here */
 495     char *runtime_plt_and_got;
 496     unsigned int runtime_plt_and_got_offset;
 497 #endif
 498 };
 499
 500 /* The current value can be: */
 501 #define VT_VALMASK   0x00ff
 502 #define VT_CONST     0x00f0  /* constant in vc
 503                               (must be first non register value) */
 504 #define VT_LLOCAL    0x00f1  /* lvalue, offset on stack */
 505 #define VT_LOCAL     0x00f2  /* offset on stack */
 506 #define VT_CMP       0x00f3  /* the value is stored in processor flags (in vc) */
 507 #define VT_JMP       0x00f4  /* value is the consequence of jmp true (even) */
 508 #define VT_JMPI      0x00f5  /* value is the consequence of jmp false (odd) */
 509 #define VT_LVAL      0x0100  /* var is an lvalue */
 510 #define VT_SYM       0x0200  /* a symbol value is added */
 511 #define VT_MUSTCAST  0x0400  /* value must be casted to be correct (used for
 512                                 char/short stored in integer registers) */
 513 #define VT_MUSTBOUND 0x0800  /* bound checking must be done before
 514                                 dereferencing value */
 515 #define VT_BOUNDED   0x8000  /* value is bounded. The address of the
 516                                 bounding function call point is in vc */
 517 #define VT_LVAL_BYTE     0x1000  /* lvalue is a byte */
 518 #define VT_LVAL_SHORT    0x2000  /* lvalue is a short */
 519 #define VT_LVAL_UNSIGNED 0x4000  /* lvalue is unsigned */
 520 #define VT_LVAL_TYPE     (VT_LVAL_BYTE | VT_LVAL_SHORT | VT_LVAL_UNSIGNED)
 521
 522 /* types */
 523 #define VT_INT        0  /* integer type */
 524 #define VT_BYTE       1  /* signed byte type */
 525 #define VT_SHORT      2  /* short type */
 526 #define VT_VOID       3  /* void type */
 527 #define VT_PTR        4  /* pointer */
 528 #define VT_ENUM       5  /* enum definition */
 529 #define VT_FUNC       6  /* function type */
 530 #define VT_STRUCT     7  /* struct/union definition */
 531 #define VT_FLOAT      8  /* IEEE float */
 532 #define VT_DOUBLE     9  /* IEEE double */
 533 #define VT_LDOUBLE   10  /* IEEE long double */
 534 #define VT_BOOL      11  /* ISOC99 boolean type */
 535 #define VT_LLONG     12  /* 64 bit integer */
 536 #define VT_LONG      13  /* long integer (NEVER USED as type, only
 537                             during parsing) */
 538 #define VT_BTYPE      0x000f /* mask for basic type */
 539 #define VT_UNSIGNED   0x0010  /* unsigned type */
 540 #define VT_ARRAY      0x0020  /* array type (also has VT_PTR) */
 541 #define VT_BITFIELD   0x0040  /* bitfield modifier */
 542 #define VT_CONSTANT   0x0800  /* const modifier */
 543 #define VT_VOLATILE   0x1000  /* volatile modifier */
 544 #define VT_SIGNED     0x2000  /* signed type */
 545
 546 /* storage */
 547 #define VT_EXTERN  0x00000080  /* extern definition */
 548 #define VT_STATIC  0x00000100  /* static variable */
 549 #define VT_TYPEDEF 0x00000200  /* typedef definition */
 550 #define VT_INLINE  0x00000400  /* inline definition */
 551
 552 #define VT_STRUCT_SHIFT 16   /* shift for bitfield shift values */
 553
 554 /* type mask (except storage) */
 555 #define VT_STORAGE (VT_EXTERN | VT_STATIC | VT_TYPEDEF | VT_INLINE)
 556 #define VT_TYPE    (~(VT_STORAGE))
 557
 558 /* token values */
 559
 560 /* warning: the following compare tokens depend on i386 asm code */
 561 #define TOK_ULT 0x92
 562 #define TOK_UGE 0x93
 563 #define TOK_EQ  0x94
 564 #define TOK_NE  0x95
 565 #define TOK_ULE 0x96
 566 #define TOK_UGT 0x97
 567 #define TOK_Nset 0x98
 568 #define TOK_Nclear 0x99
 569 #define TOK_LT  0x9c
 570 #define TOK_GE  0x9d
 571 #define TOK_LE  0x9e
 572 #define TOK_GT  0x9f
 573
 574 #define TOK_LAND  0xa0
 575 #define TOK_LOR   0xa1
 576
 577 #define TOK_DEC   0xa2
 578 #define TOK_MID   0xa3 /* inc/dec, to void constant */
 579 #define TOK_INC   0xa4
 580 #define TOK_UDIV  0xb0 /* unsigned division */
 581 #define TOK_UMOD  0xb1 /* unsigned modulo */
 582 #define TOK_PDIV  0xb2 /* fast division with undefined rounding for pointers */
 583 #define TOK_CINT   0xb3 /* number in tokc */
 584 #define TOK_CCHAR 0xb4 /* char constant in tokc */
 585 #define TOK_STR   0xb5 /* pointer to string in tokc */
 586 #define TOK_TWOSHARPS 0xb6 /* ## preprocessing token */
 587 #define TOK_LCHAR    0xb7
 588 #define TOK_LSTR     0xb8
 589 #define TOK_CFLOAT   0xb9 /* float constant */
 590 #define TOK_LINENUM  0xba /* line number info */
 591 #define TOK_CDOUBLE  0xc0 /* double constant */
 592 #define TOK_CLDOUBLE 0xc1 /* long double constant */
 593 #define TOK_UMULL    0xc2 /* unsigned 32x32 -> 64 mul */
 594 #define TOK_ADDC1    0xc3 /* add with carry generation */
 595 #define TOK_ADDC2    0xc4 /* add with carry use */
 596 #define TOK_SUBC1    0xc5 /* add with carry generation */
 597 #define TOK_SUBC2    0xc6 /* add with carry use */
 598 #define TOK_CUINT    0xc8 /* unsigned int constant */
 599 #define TOK_CLLONG   0xc9 /* long long constant */
 600 #define TOK_CULLONG  0xca /* unsigned long long constant */
 601 #define TOK_ARROW    0xcb
 602 #define TOK_DOTS     0xcc /* three dots */
 603 #define TOK_SHR      0xcd /* unsigned shift right */
 604 #define TOK_PPNUM    0xce /* preprocessor number */
 605
 606 #define TOK_SHL   0x01 /* shift left */
 607 #define TOK_SAR   0x02 /* signed shift right */
 608
 609 /* assignement operators : normal operator or 0x80 */
 610 #define TOK_A_MOD 0xa5
 611 #define TOK_A_AND 0xa6
 612 #define TOK_A_MUL 0xaa
 613 #define TOK_A_ADD 0xab
 614 #define TOK_A_SUB 0xad
 615 #define TOK_A_DIV 0xaf
 616 #define TOK_A_XOR 0xde
 617 #define TOK_A_OR  0xfc
 618 #define TOK_A_SHL 0x81
 619 #define TOK_A_SAR 0x82
 620
 621 #ifndef offsetof
 622 #define offsetof(type, field) ((size_t) &((type *)0)->field)
 623 #endif
 624
 625 #ifndef countof
 626 #define countof(tab) (sizeof(tab) / sizeof((tab)[0]))
 627 #endif
 628
 629 #define TOK_EOF       (-1)  /* end of file */
 630 #define TOK_LINEFEED  10    /* line feed */
 631
 632 /* all identificators and strings have token above that */
 633 #define TOK_IDENT 256
 634
 635 /* only used for i386 asm opcodes definitions */
 636 #define DEF_ASM(x) DEF(TOK_ASM_ ## x, #x)
 637
 638 #define DEF_BWL(x) \
 639  DEF(TOK_ASM_ ## x ## b, #x "b") \
 640  DEF(TOK_ASM_ ## x ## w, #x "w") \
 641  DEF(TOK_ASM_ ## x ## l, #x "l") \
 642  DEF(TOK_ASM_ ## x, #x)
 643
 644 #define DEF_WL(x) \
 645  DEF(TOK_ASM_ ## x ## w, #x "w") \
 646  DEF(TOK_ASM_ ## x ## l, #x "l") \
 647  DEF(TOK_ASM_ ## x, #x)
 648
 649 #define DEF_FP1(x) \
 650  DEF(TOK_ASM_ ## f ## x ## s, "f" #x "s") \
 651  DEF(TOK_ASM_ ## fi ## x ## l, "fi" #x "l") \
 652  DEF(TOK_ASM_ ## f ## x ## l, "f" #x "l") \
 653  DEF(TOK_ASM_ ## fi ## x ## s, "fi" #x "s")
 654
 655 #define DEF_FP(x) \
 656  DEF(TOK_ASM_ ## f ## x, "f" #x ) \
 657  DEF(TOK_ASM_ ## f ## x ## p, "f" #x "p") \
 658  DEF_FP1(x)
 659
 660 #define DEF_ASMTEST(x) \
 661  DEF_ASM(x ## o) \
 662  DEF_ASM(x ## no) \
 663  DEF_ASM(x ## b) \
 664  DEF_ASM(x ## c) \
 665  DEF_ASM(x ## nae) \
 666  DEF_ASM(x ## nb) \
 667  DEF_ASM(x ## nc) \
 668  DEF_ASM(x ## ae) \
 669  DEF_ASM(x ## e) \
 670  DEF_ASM(x ## z) \
 671  DEF_ASM(x ## ne) \
 672  DEF_ASM(x ## nz) \
 673  DEF_ASM(x ## be) \
 674  DEF_ASM(x ## na) \
 675  DEF_ASM(x ## nbe) \
 676  DEF_ASM(x ## a) \
 677  DEF_ASM(x ## s) \
 678  DEF_ASM(x ## ns) \
 679  DEF_ASM(x ## p) \
 680  DEF_ASM(x ## pe) \
 681  DEF_ASM(x ## np) \
 682  DEF_ASM(x ## po) \
 683  DEF_ASM(x ## l) \
 684  DEF_ASM(x ## nge) \
 685  DEF_ASM(x ## nl) \
 686  DEF_ASM(x ## ge) \
 687  DEF_ASM(x ## le) \
 688  DEF_ASM(x ## ng) \
 689  DEF_ASM(x ## nle) \
 690  DEF_ASM(x ## g)
 691
 692 #define TOK_ASM_int TOK_INT
 693
 694 enum tcc_token {
 695     TOK_LAST = TOK_IDENT - 1,
 696 #define DEF(id, str) id,
 697 #include "tcctok.h"
 698 #undef DEF
 699 };
 700
 701 #define TOK_UIDENT TOK_DEFINE
 702
 703 #ifdef _WIN32
 704 #define snprintf _snprintf
 705 #define vsnprintf _vsnprintf
 706 #ifndef __GNUC__
 707   #define strtold (long double)strtod
 708   #define strtof (float)strtod
 709   #define strtoll (long long)strtol
 710 #endif
 711 #elif defined(TCC_UCLIBC) || defined(__FreeBSD__) || defined(__DragonFly__) \
 712     || defined(__OpenBSD__)
 713 /* currently incorrect */
 714 long double strtold(const char *nptr, char **endptr)
 715 {
 716     return (long double)strtod(nptr, endptr);
 717 }
 718 float strtof(const char *nptr, char **endptr)
 719 {
 720     return (float)strtod(nptr, endptr);
 721 }
 722 #else
 723 /* XXX: need to define this to use them in non ISOC99 context */
 724 extern float strtof (const char *__nptr, char **__endptr);
 725 extern long double strtold (const char *__nptr, char **__endptr);
 726 #endif
 727
 728 #ifdef _WIN32
 729 #define IS_PATHSEP(c) (c == '/' || c == '\\')
 730 #define IS_ABSPATH(p) (IS_PATHSEP(p[0]) || (p[0] && p[1] == ':' && IS_PATHSEP(p[2])))
 731 #define PATHCMP stricmp
 732 #else
 733 #define IS_PATHSEP(c) (c == '/')
 734 #define IS_ABSPATH(p) IS_PATHSEP(p[0])
 735 #define PATHCMP strcmp
 736 #endif
 737
 738 void error(const char *fmt, ...);
 739 void error_noabort(const char *fmt, ...);
 740 void warning(const char *fmt, ...);
 741
 742 void tcc_set_lib_path_w32(TCCState *s);
 743 int tcc_set_flag(TCCState *s, const char *flag_name, int value);
 744 void tcc_print_stats(TCCState *s, int64_t total_time);
 745
 746 void tcc_free(void *ptr);
 747 void *tcc_malloc(unsigned long size);
 748 void *tcc_mallocz(unsigned long size);
 749 void *tcc_realloc(void *ptr, unsigned long size);
 750 char *tcc_strdup(const char *str);
 751
 752 char *tcc_basename(const char *name);
 753 char *tcc_fileextension (const char *name);
 754 char *pstrcpy(char *buf, int buf_size, const char *s);
 755 char *pstrcat(char *buf, int buf_size, const char *s);
 756 void dynarray_add(void ***ptab, int *nb_ptr, void *data);
 757 void dynarray_reset(void *pp, int *n);
 758
 759 #ifdef CONFIG_TCC_BACKTRACE
 760 extern int num_callers;
 761 extern const char **rt_bound_error_msg;
 762 #endif
 763
 764 /* true if float/double/long double type */
 765 static inline int is_float(int t)
 766 {
 767     int bt;
 768     bt = t & VT_BTYPE;
 769     return bt == VT_LDOUBLE || bt == VT_DOUBLE || bt == VT_FLOAT;
 770 }
 771
 772 /* space exlcuding newline */
 773 static inline int is_space(int ch)
 774 {
 775     return ch == ' ' || ch == '\t' || ch == '\v' || ch == '\f' || ch == '\r';
 776 }
 777