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