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 #ifdef _MSC_VER
  50 #define __aligned(n) __declspec(align(n))
  51 #endif
  52 #ifdef _WIN64
  53 #define uplong unsigned long long
  54 #endif
  55 #endif
  56
  57 #ifndef _WIN32
  58 #include <unistd.h>
  59 #include <sys/time.h>
  60 #include <sys/ucontext.h>
  61 #include <sys/mman.h>
  62 #endif
  63
  64 #endif /* !CONFIG_TCCBOOT */
  65
  66 #ifndef uplong
  67 #define uplong unsigned long
  68 #endif
  69
  70 #ifndef __aligned
  71 #define __aligned(n) __attribute__((aligned(n)))
  72 #endif
  73
  74 #ifndef PAGESIZE
  75 #define PAGESIZE 4096
  76 #endif
  77
  78 #include "elf.h"
  79 #include "stab.h"
  80
  81 #ifndef O_BINARY
  82 #define O_BINARY 0
  83 #endif
  84
  85 #include "libtcc.h"
  86
  87 /* parser debug */
  88 //#define PARSE_DEBUG
  89 /* preprocessor debug */
  90 //#define PP_DEBUG
  91 /* include file debug */
  92 //#define INC_DEBUG
  93
  94 //#define MEM_DEBUG
  95
  96 /* assembler debug */
  97 //#define ASM_DEBUG
  98
  99 /* target selection */
 100 //#define TCC_TARGET_I386   /* i386 code generator */
 101 //#define TCC_TARGET_ARM    /* ARMv4 code generator */
 102 //#define TCC_TARGET_C67    /* TMS320C67xx code generator */
 103 //#define TCC_TARGET_X86_64 /* x86-64 code generator */
 104
 105 /* default target is I386 */
 106 #if !defined(TCC_TARGET_I386) && !defined(TCC_TARGET_ARM) && \
 107     !defined(TCC_TARGET_C67) && !defined(TCC_TARGET_X86_64)
 108 #define TCC_TARGET_I386
 109 #endif
 110
 111 #if !defined(_WIN32) && !defined(TCC_UCLIBC) && !defined(TCC_TARGET_ARM) && \
 112     !defined(TCC_TARGET_C67) && !defined(TCC_TARGET_X86_64)
 113 #define CONFIG_TCC_BCHECK /* enable bound checking code */
 114 #endif
 115
 116 #if defined(_WIN32) && !defined(TCC_TARGET_PE)
 117 #define CONFIG_TCC_STATIC
 118 #endif
 119
 120 /* define it to include assembler support */
 121 #if !defined(TCC_TARGET_ARM) && !defined(TCC_TARGET_C67)
 122 #define CONFIG_TCC_ASM
 123 #endif
 124
 125 /* object format selection */
 126 #if defined(TCC_TARGET_C67)
 127 #define TCC_TARGET_COFF
 128 #endif
 129
 130 #if !defined(_WIN32) && !defined(CONFIG_TCCBOOT)
 131 #define CONFIG_TCC_BACKTRACE
 132 #endif
 133
 134 #define FALSE 0
 135 #define false 0
 136 #define TRUE 1
 137 #define true 1
 138 typedef int BOOL;
 139
 140 /* path to find crt1.o, crti.o and crtn.o. Only needed when generating
 141    executables or dlls */
 142 #define CONFIG_TCC_CRT_PREFIX CONFIG_SYSROOT "/usr/lib"
 143
 144 #define INCLUDE_STACK_SIZE  32
 145 #define IFDEF_STACK_SIZE    64
 146 #define VSTACK_SIZE         256
 147 #define STRING_MAX_SIZE     1024
 148 #define PACK_STACK_SIZE     8
 149
 150 #define TOK_HASH_SIZE       8192 /* must be a power of two */
 151 #define TOK_ALLOC_INCR      512  /* must be a power of two */
 152 #define TOK_MAX_SIZE        4 /* token max size in int unit when stored in string */
 153
 154 /* token symbol management */
 155 typedef struct TokenSym {
 156     struct TokenSym *hash_next;
 157     struct Sym *sym_define; /* direct pointer to define */
 158     struct Sym *sym_label; /* direct pointer to label */
 159     struct Sym *sym_struct; /* direct pointer to structure */
 160     struct Sym *sym_identifier; /* direct pointer to identifier */
 161     int tok; /* token number */
 162     int len;
 163     char str[1];
 164 } TokenSym;
 165
 166 #ifdef TCC_TARGET_PE
 167 typedef unsigned short nwchar_t;
 168 #else
 169 typedef int nwchar_t;
 170 #endif
 171
 172 typedef struct CString {
 173     int size; /* size in bytes */
 174     void *data; /* either 'char *' or 'nwchar_t *' */
 175     int size_allocated;
 176     void *data_allocated; /* if non NULL, data has been malloced */
 177 } CString;
 178
 179 /* type definition */
 180 typedef struct CType {
 181     int t;
 182     struct Sym *ref;
 183 } CType;
 184
 185 /* constant value */
 186 typedef union CValue {
 187     long double ld;
 188     double d;
 189     float f;
 190     int i;
 191     unsigned int ui;
 192     unsigned int ul; /* address (should be unsigned long on 64 bit cpu) */
 193     long long ll;
 194     unsigned long long ull;
 195     struct CString *cstr;
 196     void *ptr;
 197     int tab[1];
 198 } CValue;
 199
 200 /* value on stack */
 201 typedef struct SValue {
 202     CType type;      /* type */
 203     unsigned short r;      /* register + flags */
 204     unsigned short r2;     /* second register, used for 'long long'
 205                               type. If not used, set to VT_CONST */
 206     CValue c;              /* constant, if VT_CONST */
 207     struct Sym *sym;       /* symbol, if (VT_SYM | VT_CONST) */
 208 } SValue;
 209
 210 /* symbol management */
 211 typedef struct Sym {
 212     int v;    /* symbol token */
 213     long r;    /* associated register */
 214     union {
 215         long c;    /* associated number */
 216         int *d;   /* define token stream */
 217     };
 218     CType type;    /* associated type */
 219     union {
 220         struct Sym *next; /* next related symbol */
 221         long jnext; /* next jump label */
 222     };
 223     struct Sym *prev; /* prev symbol in stack */
 224     struct Sym *prev_tok; /* previous symbol for this token */
 225 } Sym;
 226
 227 /* section definition */
 228 /* XXX: use directly ELF structure for parameters ? */
 229 /* special flag to indicate that the section should not be linked to
 230    the other ones */
 231 #define SHF_PRIVATE 0x80000000
 232
 233 /* special flag, too */
 234 #define SECTION_ABS ((void *)1)
 235
 236 typedef struct Section {
 237     unsigned long data_offset; /* current data offset */
 238     unsigned char *data;       /* section data */
 239     unsigned long data_allocated; /* used for realloc() handling */
 240     int sh_name;             /* elf section name (only used during output) */
 241     int sh_num;              /* elf section number */
 242     int sh_type;             /* elf section type */
 243     int sh_flags;            /* elf section flags */
 244     int sh_info;             /* elf section info */
 245     int sh_addralign;        /* elf section alignment */
 246     int sh_entsize;          /* elf entry size */
 247     unsigned long sh_size;   /* section size (only used during output) */
 248     unsigned long sh_addr;      /* address at which the section is relocated */
 249     unsigned long sh_offset;    /* file offset */
 250     int nb_hashed_syms;      /* used to resize the hash table */
 251     struct Section *link;    /* link to another section */
 252     struct Section *reloc;   /* corresponding section for relocation, if any */
 253     struct Section *hash;     /* hash table for symbols */
 254     struct Section *next;
 255     char name[1];           /* section name */
 256 } Section;
 257
 258 typedef struct DLLReference {
 259     int level;
 260     void *handle;
 261     char name[1];
 262 } DLLReference;
 263
 264 /* GNUC attribute definition */
 265 typedef struct AttributeDef {
 266     int aligned;
 267     int packed;
 268     Section *section;
 269     int func_attr; /* calling convention, exports, ... */
 270 } AttributeDef;
 271
 272 /* -------------------------------------------------- */
 273 /* gr: wrappers for casting sym->r for other purposes */
 274 typedef struct {
 275     unsigned
 276       func_call : 8,
 277       func_args : 8,
 278       func_export : 1,
 279       func_import : 1;
 280 } func_attr_t;
 281
 282 #define FUNC_CALL(r) (((func_attr_t*)&(r))->func_call)
 283 #define FUNC_EXPORT(r) (((func_attr_t*)&(r))->func_export)
 284 #define FUNC_IMPORT(r) (((func_attr_t*)&(r))->func_import)
 285 #define FUNC_ARGS(r) (((func_attr_t*)&(r))->func_args)
 286 /* -------------------------------------------------- */
 287
 288 #define SYM_STRUCT     0x40000000 /* struct/union/enum symbol space */
 289 #define SYM_FIELD      0x20000000 /* struct/union field symbol space */
 290 #define SYM_FIRST_ANOM 0x10000000 /* first anonymous sym */
 291
 292 /* stored in 'Sym.c' field */
 293 #define FUNC_NEW       1 /* ansi function prototype */
 294 #define FUNC_OLD       2 /* old function prototype */
 295 #define FUNC_ELLIPSIS  3 /* ansi function prototype with ... */
 296
 297 /* stored in 'Sym.r' field */
 298 #define FUNC_CDECL     0 /* standard c call */
 299 #define FUNC_STDCALL   1 /* pascal c call */
 300 #define FUNC_FASTCALL1 2 /* first param in %eax */
 301 #define FUNC_FASTCALL2 3 /* first parameters in %eax, %edx */
 302 #define FUNC_FASTCALL3 4 /* first parameter in %eax, %edx, %ecx */
 303 #define FUNC_FASTCALLW 5 /* first parameter in %ecx, %edx */
 304
 305 /* field 'Sym.t' for macros */
 306 #define MACRO_OBJ      0 /* object like macro */
 307 #define MACRO_FUNC     1 /* function like macro */
 308
 309 /* field 'Sym.r' for C labels */
 310 #define LABEL_DEFINED  0 /* label is defined */
 311 #define LABEL_FORWARD  1 /* label is forward defined */
 312 #define LABEL_DECLARED 2 /* label is declared but never used */
 313
 314 /* type_decl() types */
 315 #define TYPE_ABSTRACT  1 /* type without variable */
 316 #define TYPE_DIRECT    2 /* type with variable */
 317
 318 #define IO_BUF_SIZE 8192
 319
 320 typedef struct BufferedFile {
 321     uint8_t *buf_ptr;
 322     uint8_t *buf_end;
 323     int fd;
 324     int line_num;    /* current line number - here to simplify code */
 325     int ifndef_macro;  /* #ifndef macro / #endif search */
 326     int ifndef_macro_saved; /* saved ifndef_macro */
 327     int *ifdef_stack_ptr; /* ifdef_stack value at the start of the file */
 328     char inc_type;          /* type of include */
 329     char inc_filename[512]; /* filename specified by the user */
 330     char filename[1024];    /* current filename - here to simplify code */
 331     unsigned char buffer[IO_BUF_SIZE + 1]; /* extra size for CH_EOB char */
 332 } BufferedFile;
 333
 334 #define CH_EOB   '\\'       /* end of buffer or '\0' char in file */
 335 #define CH_EOF   (-1)   /* end of file */
 336
 337 /* parsing state (used to save parser state to reparse part of the
 338    source several times) */
 339 typedef struct ParseState {
 340     int *macro_ptr;
 341     int line_num;
 342     int tok;
 343     CValue tokc;
 344 } ParseState;
 345
 346 /* used to record tokens */
 347 typedef struct TokenString {
 348     int *str;
 349     int len;
 350     int allocated_len;
 351     int last_line_num;
 352 } TokenString;
 353
 354 /* inline functions */
 355 typedef struct InlineFunc {
 356     int *token_str;
 357     Sym *sym;
 358     char filename[1];
 359 } InlineFunc;
 360
 361 /* include file cache, used to find files faster and also to eliminate
 362    inclusion if the include file is protected by #ifndef ... #endif */
 363 typedef struct CachedInclude {
 364     int ifndef_macro;
 365     int hash_next; /* -1 if none */
 366     char type; /* '"' or '>' to give include type */
 367     char filename[1]; /* path specified in #include */
 368 } CachedInclude;
 369
 370 #define CACHED_INCLUDES_HASH_SIZE 512
 371
 372 #ifdef CONFIG_TCC_ASM
 373 typedef struct ExprValue {
 374     uint32_t v;
 375     Sym *sym;
 376 } ExprValue;
 377
 378 #define MAX_ASM_OPERANDS 30
 379 typedef struct ASMOperand {
 380     int id; /* GCC 3 optionnal identifier (0 if number only supported */
 381     char *constraint;
 382     char asm_str[16]; /* computed asm string for operand */
 383     SValue *vt; /* C value of the expression */
 384     int ref_index; /* if >= 0, gives reference to a output constraint */
 385     int input_index; /* if >= 0, gives reference to an input constraint */
 386     int priority; /* priority, used to assign registers */
 387     int reg; /* if >= 0, register number used for this operand */
 388     int is_llong; /* true if double register value */
 389     int is_memory; /* true if memory operand */
 390     int is_rw;     /* for '+' modifier */
 391 } ASMOperand;
 392 #endif
 393
 394 struct TCCState {
 395     int output_type;
 396
 397     BufferedFile **include_stack_ptr;
 398     int *ifdef_stack_ptr;
 399
 400     /* include file handling */
 401     char **include_paths;
 402     int nb_include_paths;
 403     char **sysinclude_paths;
 404     int nb_sysinclude_paths;
 405     CachedInclude **cached_includes;
 406     int nb_cached_includes;
 407
 408     char **library_paths;
 409     int nb_library_paths;
 410
 411     /* array of all loaded dlls (including those referenced by loaded
 412        dlls) */
 413     DLLReference **loaded_dlls;
 414     int nb_loaded_dlls;
 415
 416     /* sections */
 417     Section **sections;
 418     int nb_sections; /* number of sections, including first dummy section */
 419
 420     Section **priv_sections;
 421     int nb_priv_sections; /* number of private sections */
 422
 423     /* got handling */
 424     Section *got;
 425     Section *plt;
 426     unsigned long *got_offsets;
 427     int nb_got_offsets;
 428     /* give the correspondance from symtab indexes to dynsym indexes */
 429     int *symtab_to_dynsym;
 430
 431     /* temporary dynamic symbol sections (for dll loading) */
 432     Section *dynsymtab_section;
 433     /* exported dynamic symbol section */
 434     Section *dynsym;
 435
 436     int nostdinc; /* if true, no standard headers are added */
 437     int nostdlib; /* if true, no standard libraries are added */
 438     int nocommon; /* if true, do not use common symbols for .bss data */
 439
 440     /* if true, static linking is performed */
 441     int static_link;
 442
 443     /* soname as specified on the command line (-soname) */
 444     const char *soname;
 445
 446     /* if true, all symbols are exported */
 447     int rdynamic;
 448
 449     /* if true, only link in referenced objects from archive */
 450     int alacarte_link;
 451
 452     /* address of text section */
 453     unsigned long text_addr;
 454     int has_text_addr;
 455
 456     /* output format, see TCC_OUTPUT_FORMAT_xxx */
 457     int output_format;
 458
 459     /* C language options */
 460     int char_is_unsigned;
 461     int leading_underscore;
 462
 463     /* warning switches */
 464     int warn_write_strings;
 465     int warn_unsupported;
 466     int warn_error;
 467     int warn_none;
 468     int warn_implicit_function_declaration;
 469
 470     /* display some information during compilation */
 471     int verbose;
 472     /* compile with debug symbol (and use them if error during execution) */
 473     int do_debug;
 474     /* compile with built-in memory and bounds checker */
 475     int do_bounds_check;
 476     /* give the path of the tcc libraries */
 477     char *tcc_lib_path;
 478
 479     /* error handling */
 480     void *error_opaque;
 481     void (*error_func)(void *opaque, const char *msg);
 482     int error_set_jmp_enabled;
 483 #ifdef _WIN64
 484     __aligned(16)
 485 #endif
 486     jmp_buf error_jmp_buf;
 487     int nb_errors;
 488
 489     /* tiny assembler state */
 490     Sym *asm_labels;
 491
 492     /* see include_stack_ptr */
 493     BufferedFile *include_stack[INCLUDE_STACK_SIZE];
 494
 495     /* see ifdef_stack_ptr */
 496     int ifdef_stack[IFDEF_STACK_SIZE];
 497
 498     /* see cached_includes */
 499     int cached_includes_hash[CACHED_INCLUDES_HASH_SIZE];
 500
 501     /* pack stack */
 502     int pack_stack[PACK_STACK_SIZE];
 503     int *pack_stack_ptr;
 504
 505     /* output file for preprocessing */
 506     FILE *outfile;
 507
 508     /* for tcc_relocate */
 509     int runtime_added;
 510
 511     struct InlineFunc **inline_fns;
 512     int nb_inline_fns;
 513
 514 #ifdef TCC_TARGET_I386
 515     int seg_size;
 516 #endif
 517
 518     /* section alignment */
 519     unsigned long section_align;
 520
 521 #ifdef TCC_TARGET_PE
 522     /* PE info */
 523     int pe_subsystem;
 524     unsigned long pe_file_align;
 525 #endif
 526
 527 #ifndef TCC_TARGET_PE
 528 #ifdef TCC_TARGET_X86_64
 529     /* write PLT and GOT here */
 530     char *runtime_plt_and_got;
 531     unsigned int runtime_plt_and_got_offset;
 532 #endif
 533 #endif
 534 };
 535
 536 /* The current value can be: */
 537 #define VT_VALMASK   0x00ff
 538 #define VT_CONST     0x00f0  /* constant in vc
 539                               (must be first non register value) */
 540 #define VT_LLOCAL    0x00f1  /* lvalue, offset on stack */
 541 #define VT_LOCAL     0x00f2  /* offset on stack */
 542 #define VT_CMP       0x00f3  /* the value is stored in processor flags (in vc) */
 543 #define VT_JMP       0x00f4  /* value is the consequence of jmp true (even) */
 544 #define VT_JMPI      0x00f5  /* value is the consequence of jmp false (odd) */
 545 #define VT_LVAL      0x0100  /* var is an lvalue */
 546 #define VT_SYM       0x0200  /* a symbol value is added */
 547 #define VT_MUSTCAST  0x0400  /* value must be casted to be correct (used for
 548                                 char/short stored in integer registers) */
 549 #define VT_MUSTBOUND 0x0800  /* bound checking must be done before
 550                                 dereferencing value */
 551 #define VT_BOUNDED   0x8000  /* value is bounded. The address of the
 552                                 bounding function call point is in vc */
 553 #define VT_LVAL_BYTE     0x1000  /* lvalue is a byte */
 554 #define VT_LVAL_SHORT    0x2000  /* lvalue is a short */
 555 #define VT_LVAL_UNSIGNED 0x4000  /* lvalue is unsigned */
 556 #define VT_LVAL_TYPE     (VT_LVAL_BYTE | VT_LVAL_SHORT | VT_LVAL_UNSIGNED)
 557
 558 /* types */
 559 #define VT_INT        0  /* integer type */
 560 #define VT_BYTE       1  /* signed byte type */
 561 #define VT_SHORT      2  /* short type */
 562 #define VT_VOID       3  /* void type */
 563 #define VT_PTR        4  /* pointer */
 564 #define VT_ENUM       5  /* enum definition */
 565 #define VT_FUNC       6  /* function type */
 566 #define VT_STRUCT     7  /* struct/union definition */
 567 #define VT_FLOAT      8  /* IEEE float */
 568 #define VT_DOUBLE     9  /* IEEE double */
 569 #define VT_LDOUBLE   10  /* IEEE long double */
 570 #define VT_BOOL      11  /* ISOC99 boolean type */
 571 #define VT_LLONG     12  /* 64 bit integer */
 572 #define VT_LONG      13  /* long integer (NEVER USED as type, only
 573                             during parsing) */
 574 #define VT_BTYPE      0x000f /* mask for basic type */
 575 #define VT_UNSIGNED   0x0010  /* unsigned type */
 576 #define VT_ARRAY      0x0020  /* array type (also has VT_PTR) */
 577 #define VT_BITFIELD   0x0040  /* bitfield modifier */
 578 #define VT_CONSTANT   0x0800  /* const modifier */
 579 #define VT_VOLATILE   0x1000  /* volatile modifier */
 580 #define VT_SIGNED     0x2000  /* signed type */
 581
 582 /* storage */
 583 #define VT_EXTERN  0x00000080  /* extern definition */
 584 #define VT_STATIC  0x00000100  /* static variable */
 585 #define VT_TYPEDEF 0x00000200  /* typedef definition */
 586 #define VT_INLINE  0x00000400  /* inline definition */
 587 #define VT_IMPORT  0x00004000  /* win32: extern data imported from dll */
 588
 589 #define VT_STRUCT_SHIFT 16   /* shift for bitfield shift values */
 590
 591 /* type mask (except storage) */
 592 #define VT_STORAGE (VT_EXTERN | VT_STATIC | VT_TYPEDEF | VT_INLINE | VT_IMPORT)
 593 #define VT_TYPE    (~(VT_STORAGE))
 594
 595 /* token values */
 596
 597 /* warning: the following compare tokens depend on i386 asm code */
 598 #define TOK_ULT 0x92
 599 #define TOK_UGE 0x93
 600 #define TOK_EQ  0x94
 601 #define TOK_NE  0x95
 602 #define TOK_ULE 0x96
 603 #define TOK_UGT 0x97
 604 #define TOK_Nset 0x98
 605 #define TOK_Nclear 0x99
 606 #define TOK_LT  0x9c
 607 #define TOK_GE  0x9d
 608 #define TOK_LE  0x9e
 609 #define TOK_GT  0x9f
 610
 611 #define TOK_LAND  0xa0
 612 #define TOK_LOR   0xa1
 613
 614 #define TOK_DEC   0xa2
 615 #define TOK_MID   0xa3 /* inc/dec, to void constant */
 616 #define TOK_INC   0xa4
 617 #define TOK_UDIV  0xb0 /* unsigned division */
 618 #define TOK_UMOD  0xb1 /* unsigned modulo */
 619 #define TOK_PDIV  0xb2 /* fast division with undefined rounding for pointers */
 620 #define TOK_CINT   0xb3 /* number in tokc */
 621 #define TOK_CCHAR 0xb4 /* char constant in tokc */
 622 #define TOK_STR   0xb5 /* pointer to string in tokc */
 623 #define TOK_TWOSHARPS 0xb6 /* ## preprocessing token */
 624 #define TOK_LCHAR    0xb7
 625 #define TOK_LSTR     0xb8
 626 #define TOK_CFLOAT   0xb9 /* float constant */
 627 #define TOK_LINENUM  0xba /* line number info */
 628 #define TOK_CDOUBLE  0xc0 /* double constant */
 629 #define TOK_CLDOUBLE 0xc1 /* long double constant */
 630 #define TOK_UMULL    0xc2 /* unsigned 32x32 -> 64 mul */
 631 #define TOK_ADDC1    0xc3 /* add with carry generation */
 632 #define TOK_ADDC2    0xc4 /* add with carry use */
 633 #define TOK_SUBC1    0xc5 /* add with carry generation */
 634 #define TOK_SUBC2    0xc6 /* add with carry use */
 635 #define TOK_CUINT    0xc8 /* unsigned int constant */
 636 #define TOK_CLLONG   0xc9 /* long long constant */
 637 #define TOK_CULLONG  0xca /* unsigned long long constant */
 638 #define TOK_ARROW    0xcb
 639 #define TOK_DOTS     0xcc /* three dots */
 640 #define TOK_SHR      0xcd /* unsigned shift right */
 641 #define TOK_PPNUM    0xce /* preprocessor number */
 642
 643 #define TOK_SHL   0x01 /* shift left */
 644 #define TOK_SAR   0x02 /* signed shift right */
 645
 646 /* assignement operators : normal operator or 0x80 */
 647 #define TOK_A_MOD 0xa5
 648 #define TOK_A_AND 0xa6
 649 #define TOK_A_MUL 0xaa
 650 #define TOK_A_ADD 0xab
 651 #define TOK_A_SUB 0xad
 652 #define TOK_A_DIV 0xaf
 653 #define TOK_A_XOR 0xde
 654 #define TOK_A_OR  0xfc
 655 #define TOK_A_SHL 0x81
 656 #define TOK_A_SAR 0x82
 657
 658 #ifndef offsetof
 659 #define offsetof(type, field) ((size_t) &((type *)0)->field)
 660 #endif
 661
 662 #ifndef countof
 663 #define countof(tab) (sizeof(tab) / sizeof((tab)[0]))
 664 #endif
 665
 666 #define TOK_EOF       (-1)  /* end of file */
 667 #define TOK_LINEFEED  10    /* line feed */
 668
 669 /* all identificators and strings have token above that */
 670 #define TOK_IDENT 256
 671
 672 /* only used for i386 asm opcodes definitions */
 673 #define DEF_ASM(x) DEF(TOK_ASM_ ## x, #x)
 674
 675 #define DEF_BWL(x) \
 676  DEF(TOK_ASM_ ## x ## b, #x "b") \
 677  DEF(TOK_ASM_ ## x ## w, #x "w") \
 678  DEF(TOK_ASM_ ## x ## l, #x "l") \
 679  DEF(TOK_ASM_ ## x, #x)
 680
 681 #define DEF_WL(x) \
 682  DEF(TOK_ASM_ ## x ## w, #x "w") \
 683  DEF(TOK_ASM_ ## x ## l, #x "l") \
 684  DEF(TOK_ASM_ ## x, #x)
 685
 686 #ifdef TCC_TARGET_X86_64
 687
 688 #define DEF_BWLQ(x) \
 689  DEF(TOK_ASM_ ## x ## b, #x "b") \
 690  DEF(TOK_ASM_ ## x ## w, #x "w") \
 691  DEF(TOK_ASM_ ## x ## l, #x "l") \
 692  DEF(TOK_ASM_ ## x ## q, #x "q") \
 693  DEF(TOK_ASM_ ## x, #x)
 694
 695 #define DEF_WLQ(x) \
 696  DEF(TOK_ASM_ ## x ## w, #x "w") \
 697  DEF(TOK_ASM_ ## x ## l, #x "l") \
 698  DEF(TOK_ASM_ ## x ## q, #x "q") \
 699  DEF(TOK_ASM_ ## x, #x)
 700
 701 #endif
 702
 703 #define DEF_FP1(x) \
 704  DEF(TOK_ASM_ ## f ## x ## s, "f" #x "s") \
 705  DEF(TOK_ASM_ ## fi ## x ## l, "fi" #x "l") \
 706  DEF(TOK_ASM_ ## f ## x ## l, "f" #x "l") \
 707  DEF(TOK_ASM_ ## fi ## x ## s, "fi" #x "s")
 708
 709 #define DEF_FP(x) \
 710  DEF(TOK_ASM_ ## f ## x, "f" #x ) \
 711  DEF(TOK_ASM_ ## f ## x ## p, "f" #x "p") \
 712  DEF_FP1(x)
 713
 714 #define DEF_ASMTEST(x) \
 715  DEF_ASM(x ## o) \
 716  DEF_ASM(x ## no) \
 717  DEF_ASM(x ## b) \
 718  DEF_ASM(x ## c) \
 719  DEF_ASM(x ## nae) \
 720  DEF_ASM(x ## nb) \
 721  DEF_ASM(x ## nc) \
 722  DEF_ASM(x ## ae) \
 723  DEF_ASM(x ## e) \
 724  DEF_ASM(x ## z) \
 725  DEF_ASM(x ## ne) \
 726  DEF_ASM(x ## nz) \
 727  DEF_ASM(x ## be) \
 728  DEF_ASM(x ## na) \
 729  DEF_ASM(x ## nbe) \
 730  DEF_ASM(x ## a) \
 731  DEF_ASM(x ## s) \
 732  DEF_ASM(x ## ns) \
 733  DEF_ASM(x ## p) \
 734  DEF_ASM(x ## pe) \
 735  DEF_ASM(x ## np) \
 736  DEF_ASM(x ## po) \
 737  DEF_ASM(x ## l) \
 738  DEF_ASM(x ## nge) \
 739  DEF_ASM(x ## nl) \
 740  DEF_ASM(x ## ge) \
 741  DEF_ASM(x ## le) \
 742  DEF_ASM(x ## ng) \
 743  DEF_ASM(x ## nle) \
 744  DEF_ASM(x ## g)
 745
 746 #define TOK_ASM_int TOK_INT
 747
 748 enum tcc_token {
 749     TOK_LAST = TOK_IDENT - 1,
 750 #define DEF(id, str) id,
 751 #include "tcctok.h"
 752 #undef DEF
 753 };
 754
 755 #define TOK_UIDENT TOK_DEFINE
 756
 757 #ifdef _WIN32
 758 #define snprintf _snprintf
 759 #define vsnprintf _vsnprintf
 760 #ifndef __GNUC__
 761   #define strtold (long double)strtod
 762   #define strtof (float)strtod
 763   #define strtoll (long long)strtol
 764 #endif
 765 #elif defined(TCC_UCLIBC) || defined(__FreeBSD__) || defined(__DragonFly__) \
 766     || defined(__OpenBSD__)
 767 /* currently incorrect */
 768 long double strtold(const char *nptr, char **endptr)
 769 {
 770     return (long double)strtod(nptr, endptr);
 771 }
 772 float strtof(const char *nptr, char **endptr)
 773 {
 774     return (float)strtod(nptr, endptr);
 775 }
 776 #else
 777 /* XXX: need to define this to use them in non ISOC99 context */
 778 extern float strtof (const char *__nptr, char **__endptr);
 779 extern long double strtold (const char *__nptr, char **__endptr);
 780 #endif
 781
 782 #ifdef _WIN32
 783 #define IS_PATHSEP(c) (c == '/' || c == '\\')
 784 #define IS_ABSPATH(p) (IS_PATHSEP(p[0]) || (p[0] && p[1] == ':' && IS_PATHSEP(p[2])))
 785 #define PATHCMP stricmp
 786 #else
 787 #define IS_PATHSEP(c) (c == '/')
 788 #define IS_ABSPATH(p) IS_PATHSEP(p[0])
 789 #define PATHCMP strcmp
 790 #endif
 791
 792 void error(const char *fmt, ...);
 793 void error_noabort(const char *fmt, ...);
 794 void warning(const char *fmt, ...);
 795
 796 void tcc_set_lib_path_w32(TCCState *s);
 797 int tcc_set_flag(TCCState *s, const char *flag_name, int value);
 798 void tcc_print_stats(TCCState *s, int64_t total_time);
 799
 800 void tcc_free(void *ptr);
 801 void *tcc_malloc(unsigned long size);
 802 void *tcc_mallocz(unsigned long size);
 803 void *tcc_realloc(void *ptr, unsigned long size);
 804 char *tcc_strdup(const char *str);
 805
 806 char *tcc_basename(const char *name);
 807 char *tcc_fileextension (const char *name);
 808 char *pstrcpy(char *buf, int buf_size, const char *s);
 809 char *pstrcat(char *buf, int buf_size, const char *s);
 810 void dynarray_add(void ***ptab, int *nb_ptr, void *data);
 811 void dynarray_reset(void *pp, int *n);
 812
 813 #ifdef CONFIG_TCC_BACKTRACE
 814 extern int num_callers;
 815 extern const char **rt_bound_error_msg;
 816 #endif
 817
 818 /* true if float/double/long double type */
 819 static inline int is_float(int t)
 820 {
 821     int bt;
 822     bt = t & VT_BTYPE;
 823     return bt == VT_LDOUBLE || bt == VT_DOUBLE || bt == VT_FLOAT;
 824 }
 825
 826 /* space exlcuding newline */
 827 static inline int is_space(int ch)
 828 {
 829     return ch == ' ' || ch == '\t' || ch == '\v' || ch == '\f' || ch == '\r';
 830 }
 831