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 #ifndef __TCC_H__
  22 #define __TCC_H__
  23
  24 #define _GNU_SOURCE
  25 #include "config.h"
  26
  27 #ifdef CONFIG_TCCBOOT
  28
  29 #include "tccboot.h"
  30 #define CONFIG_TCC_STATIC
  31
  32 #else
  33
  34 #include <stdlib.h>
  35 #include <stdio.h>
  36 #include <stdarg.h>
  37 #include <string.h>
  38 #include <errno.h>
  39 #include <math.h>
  40 #include <signal.h>
  41 #include <fcntl.h>
  42 #include <setjmp.h>
  43 #include <time.h>
  44
  45 #ifdef _WIN32
  46 #include <windows.h>
  47 #include <sys/timeb.h>
  48 #include <io.h> /* open, close etc. */
  49 #include <direct.h> /* getcwd */
  50 #define inline __inline
  51 #define inp next_inp
  52 #ifdef _MSC_VER
  53 #define __aligned(n) __declspec(align(n))
  54 #endif
  55 #ifdef _WIN64
  56 #define uplong unsigned long long
  57 #endif
  58 #endif
  59
  60 #ifndef _WIN32
  61 #include <unistd.h>
  62 #include <sys/time.h>
  63 #include <sys/ucontext.h>
  64 #include <sys/mman.h>
  65 #endif
  66
  67 #endif /* !CONFIG_TCCBOOT */
  68
  69 #ifndef uplong
  70 #define uplong unsigned long
  71 #endif
  72
  73 #ifndef __aligned
  74 #define __aligned(n) __attribute__((aligned(n)))
  75 #endif
  76
  77 #ifndef PAGESIZE
  78 #define PAGESIZE 4096
  79 #endif
  80
  81 #include "elf.h"
  82 #include "stab.h"
  83
  84 #ifndef O_BINARY
  85 #define O_BINARY 0
  86 #endif
  87
  88 #include "libtcc.h"
  89
  90 /* parser debug */
  91 //#define PARSE_DEBUG
  92 /* preprocessor debug */
  93 //#define PP_DEBUG
  94 /* include file debug */
  95 //#define INC_DEBUG
  96
  97 //#define MEM_DEBUG
  98
  99 /* assembler debug */
 100 //#define ASM_DEBUG
 101
 102 /* target selection */
 103 //#define TCC_TARGET_I386   /* i386 code generator */
 104 //#define TCC_TARGET_ARM    /* ARMv4 code generator */
 105 //#define TCC_TARGET_C67    /* TMS320C67xx code generator */
 106 //#define TCC_TARGET_X86_64 /* x86-64 code generator */
 107
 108 /* default target is I386 */
 109 #if !defined(TCC_TARGET_I386) && !defined(TCC_TARGET_ARM) && \
 110     !defined(TCC_TARGET_C67) && !defined(TCC_TARGET_X86_64)
 111 #define TCC_TARGET_I386
 112 #endif
 113
 114 #if !defined(_WIN32) && !defined(TCC_UCLIBC) && !defined(TCC_TARGET_ARM) && \
 115     !defined(TCC_TARGET_C67) && !defined(TCC_TARGET_X86_64)
 116 #define CONFIG_TCC_BCHECK /* enable bound checking code */
 117 #endif
 118
 119 #if defined(_WIN32) && !defined(TCC_TARGET_PE)
 120 #define CONFIG_TCC_STATIC
 121 #endif
 122
 123 /* define it to include assembler support */
 124 #if !defined(TCC_TARGET_ARM) && !defined(TCC_TARGET_C67)
 125 #define CONFIG_TCC_ASM
 126 #endif
 127
 128 /* object format selection */
 129 #if defined(TCC_TARGET_C67)
 130 #define TCC_TARGET_COFF
 131 #endif
 132
 133 #if !defined(_WIN32) && !defined(CONFIG_TCCBOOT)
 134 #define CONFIG_TCC_BACKTRACE
 135 #endif
 136
 137 #define FALSE 0
 138 #define false 0
 139 #define TRUE 1
 140 #define true 1
 141 typedef int BOOL;
 142
 143 /* path to find crt1.o, crti.o and crtn.o. Only needed when generating
 144    executables or dlls */
 145 #define CONFIG_TCC_CRT_PREFIX CONFIG_SYSROOT "/usr/lib"
 146
 147 #define INCLUDE_STACK_SIZE  32
 148 #define IFDEF_STACK_SIZE    64
 149 #define VSTACK_SIZE         256
 150 #define STRING_MAX_SIZE     1024
 151 #define PACK_STACK_SIZE     8
 152
 153 #define TOK_HASH_SIZE       8192 /* must be a power of two */
 154 #define TOK_ALLOC_INCR      512  /* must be a power of two */
 155 #define TOK_MAX_SIZE        4 /* token max size in int unit when stored in string */
 156
 157 /* token symbol management */
 158 typedef struct TokenSym {
 159     struct TokenSym *hash_next;
 160     struct Sym *sym_define; /* direct pointer to define */
 161     struct Sym *sym_label; /* direct pointer to label */
 162     struct Sym *sym_struct; /* direct pointer to structure */
 163     struct Sym *sym_identifier; /* direct pointer to identifier */
 164     int tok; /* token number */
 165     int len;
 166     char str[1];
 167 } TokenSym;
 168
 169 #ifdef TCC_TARGET_PE
 170 typedef unsigned short nwchar_t;
 171 #else
 172 typedef int nwchar_t;
 173 #endif
 174
 175 typedef struct CString {
 176     int size; /* size in bytes */
 177     void *data; /* either 'char *' or 'nwchar_t *' */
 178     int size_allocated;
 179     void *data_allocated; /* if non NULL, data has been malloced */
 180 } CString;
 181
 182 /* type definition */
 183 typedef struct CType {
 184     int t;
 185     struct Sym *ref;
 186 } CType;
 187
 188 /* constant value */
 189 typedef union CValue {
 190     long double ld;
 191     double d;
 192     float f;
 193     int i;
 194     unsigned int ui;
 195     unsigned int ul; /* address (should be unsigned long on 64 bit cpu) */
 196     long long ll;
 197     unsigned long long ull;
 198     struct CString *cstr;
 199     void *ptr;
 200     int tab[1];
 201 } CValue;
 202
 203 /* value on stack */
 204 typedef struct SValue {
 205     CType type;      /* type */
 206     unsigned short r;      /* register + flags */
 207     unsigned short r2;     /* second register, used for 'long long'
 208                               type. If not used, set to VT_CONST */
 209     CValue c;              /* constant, if VT_CONST */
 210     struct Sym *sym;       /* symbol, if (VT_SYM | VT_CONST) */
 211 } SValue;
 212
 213 /* symbol management */
 214 typedef struct Sym {
 215     int v;    /* symbol token */
 216     long r;    /* associated register */
 217     union {
 218         long c;    /* associated number */
 219         int *d;   /* define token stream */
 220     };
 221     CType type;    /* associated type */
 222     union {
 223         struct Sym *next; /* next related symbol */
 224         long jnext; /* next jump label */
 225     };
 226     struct Sym *prev; /* prev symbol in stack */
 227     struct Sym *prev_tok; /* previous symbol for this token */
 228 } Sym;
 229
 230 /* section definition */
 231 /* XXX: use directly ELF structure for parameters ? */
 232 /* special flag to indicate that the section should not be linked to
 233    the other ones */
 234 #define SHF_PRIVATE 0x80000000
 235
 236 /* special flag, too */
 237 #define SECTION_ABS ((void *)1)
 238
 239 typedef struct Section {
 240     unsigned long data_offset; /* current data offset */
 241     unsigned char *data;       /* section data */
 242     unsigned long data_allocated; /* used for realloc() handling */
 243     int sh_name;             /* elf section name (only used during output) */
 244     int sh_num;              /* elf section number */
 245     int sh_type;             /* elf section type */
 246     int sh_flags;            /* elf section flags */
 247     int sh_info;             /* elf section info */
 248     int sh_addralign;        /* elf section alignment */
 249     int sh_entsize;          /* elf entry size */
 250     unsigned long sh_size;   /* section size (only used during output) */
 251     unsigned long sh_addr;      /* address at which the section is relocated */
 252     unsigned long sh_offset;    /* file offset */
 253     int nb_hashed_syms;      /* used to resize the hash table */
 254     struct Section *link;    /* link to another section */
 255     struct Section *reloc;   /* corresponding section for relocation, if any */
 256     struct Section *hash;     /* hash table for symbols */
 257     struct Section *next;
 258     char name[1];           /* section name */
 259 } Section;
 260
 261 typedef struct DLLReference {
 262     int level;
 263     void *handle;
 264     char name[1];
 265 } DLLReference;
 266
 267 /* GNUC attribute definition */
 268 typedef struct AttributeDef {
 269     int aligned;
 270     int packed;
 271     Section *section;
 272     int func_attr; /* calling convention, exports, ... */
 273 } AttributeDef;
 274
 275 /* -------------------------------------------------- */
 276 /* gr: wrappers for casting sym->r for other purposes */
 277 typedef struct {
 278     unsigned
 279       func_call : 8,
 280       func_args : 8,
 281       func_export : 1,
 282       func_import : 1;
 283 } func_attr_t;
 284
 285 #define FUNC_CALL(r) (((func_attr_t*)&(r))->func_call)
 286 #define FUNC_EXPORT(r) (((func_attr_t*)&(r))->func_export)
 287 #define FUNC_IMPORT(r) (((func_attr_t*)&(r))->func_import)
 288 #define FUNC_ARGS(r) (((func_attr_t*)&(r))->func_args)
 289 /* -------------------------------------------------- */
 290
 291 #define SYM_STRUCT     0x40000000 /* struct/union/enum symbol space */
 292 #define SYM_FIELD      0x20000000 /* struct/union field symbol space */
 293 #define SYM_FIRST_ANOM 0x10000000 /* first anonymous sym */
 294
 295 /* stored in 'Sym.c' field */
 296 #define FUNC_NEW       1 /* ansi function prototype */
 297 #define FUNC_OLD       2 /* old function prototype */
 298 #define FUNC_ELLIPSIS  3 /* ansi function prototype with ... */
 299
 300 /* stored in 'Sym.r' field */
 301 #define FUNC_CDECL     0 /* standard c call */
 302 #define FUNC_STDCALL   1 /* pascal c call */
 303 #define FUNC_FASTCALL1 2 /* first param in %eax */
 304 #define FUNC_FASTCALL2 3 /* first parameters in %eax, %edx */
 305 #define FUNC_FASTCALL3 4 /* first parameter in %eax, %edx, %ecx */
 306 #define FUNC_FASTCALLW 5 /* first parameter in %ecx, %edx */
 307
 308 /* field 'Sym.t' for macros */
 309 #define MACRO_OBJ      0 /* object like macro */
 310 #define MACRO_FUNC     1 /* function like macro */
 311
 312 /* field 'Sym.r' for C labels */
 313 #define LABEL_DEFINED  0 /* label is defined */
 314 #define LABEL_FORWARD  1 /* label is forward defined */
 315 #define LABEL_DECLARED 2 /* label is declared but never used */
 316
 317 /* type_decl() types */
 318 #define TYPE_ABSTRACT  1 /* type without variable */
 319 #define TYPE_DIRECT    2 /* type with variable */
 320
 321 #define IO_BUF_SIZE 8192
 322
 323 typedef struct BufferedFile {
 324     uint8_t *buf_ptr;
 325     uint8_t *buf_end;
 326     int fd;
 327     int line_num;    /* current line number - here to simplify code */
 328     int ifndef_macro;  /* #ifndef macro / #endif search */
 329     int ifndef_macro_saved; /* saved ifndef_macro */
 330     int *ifdef_stack_ptr; /* ifdef_stack value at the start of the file */
 331     char inc_type;          /* type of include */
 332     char inc_filename[512]; /* filename specified by the user */
 333     char filename[1024];    /* current filename - here to simplify code */
 334     unsigned char buffer[IO_BUF_SIZE + 1]; /* extra size for CH_EOB char */
 335 } BufferedFile;
 336
 337 #define CH_EOB   '\\'       /* end of buffer or '\0' char in file */
 338 #define CH_EOF   (-1)   /* end of file */
 339
 340 /* parsing state (used to save parser state to reparse part of the
 341    source several times) */
 342 typedef struct ParseState {
 343     int *macro_ptr;
 344     int line_num;
 345     int tok;
 346     CValue tokc;
 347 } ParseState;
 348
 349 /* used to record tokens */
 350 typedef struct TokenString {
 351     int *str;
 352     int len;
 353     int allocated_len;
 354     int last_line_num;
 355 } TokenString;
 356
 357 /* inline functions */
 358 typedef struct InlineFunc {
 359     int *token_str;
 360     Sym *sym;
 361     char filename[1];
 362 } InlineFunc;
 363
 364 /* include file cache, used to find files faster and also to eliminate
 365    inclusion if the include file is protected by #ifndef ... #endif */
 366 typedef struct CachedInclude {
 367     int ifndef_macro;
 368     int hash_next; /* -1 if none */
 369     char type; /* '"' or '>' to give include type */
 370     char filename[1]; /* path specified in #include */
 371 } CachedInclude;
 372
 373 #define CACHED_INCLUDES_HASH_SIZE 512
 374
 375 #ifdef CONFIG_TCC_ASM
 376 typedef struct ExprValue {
 377     uint32_t v;
 378     Sym *sym;
 379 } ExprValue;
 380
 381 #define MAX_ASM_OPERANDS 30
 382 typedef struct ASMOperand {
 383     int id; /* GCC 3 optionnal identifier (0 if number only supported */
 384     char *constraint;
 385     char asm_str[16]; /* computed asm string for operand */
 386     SValue *vt; /* C value of the expression */
 387     int ref_index; /* if >= 0, gives reference to a output constraint */
 388     int input_index; /* if >= 0, gives reference to an input constraint */
 389     int priority; /* priority, used to assign registers */
 390     int reg; /* if >= 0, register number used for this operand */
 391     int is_llong; /* true if double register value */
 392     int is_memory; /* true if memory operand */
 393     int is_rw;     /* for '+' modifier */
 394 } ASMOperand;
 395 #endif
 396
 397 struct TCCState {
 398     int output_type;
 399
 400     BufferedFile **include_stack_ptr;
 401     int *ifdef_stack_ptr;
 402
 403     /* include file handling */
 404     char **include_paths;
 405     int nb_include_paths;
 406     char **sysinclude_paths;
 407     int nb_sysinclude_paths;
 408     CachedInclude **cached_includes;
 409     int nb_cached_includes;
 410
 411     char **library_paths;
 412     int nb_library_paths;
 413
 414     /* array of all loaded dlls (including those referenced by loaded
 415        dlls) */
 416     DLLReference **loaded_dlls;
 417     int nb_loaded_dlls;
 418
 419     /* sections */
 420     Section **sections;
 421     int nb_sections; /* number of sections, including first dummy section */
 422
 423     Section **priv_sections;
 424     int nb_priv_sections; /* number of private sections */
 425
 426     /* got handling */
 427     Section *got;
 428     Section *plt;
 429     unsigned long *got_offsets;
 430     int nb_got_offsets;
 431     /* give the correspondance from symtab indexes to dynsym indexes */
 432     int *symtab_to_dynsym;
 433
 434     /* temporary dynamic symbol sections (for dll loading) */
 435     Section *dynsymtab_section;
 436     /* exported dynamic symbol section */
 437     Section *dynsym;
 438
 439     int nostdinc; /* if true, no standard headers are added */
 440     int nostdlib; /* if true, no standard libraries are added */
 441     int nocommon; /* if true, do not use common symbols for .bss data */
 442
 443     /* if true, static linking is performed */
 444     int static_link;
 445
 446     /* soname as specified on the command line (-soname) */
 447     const char *soname;
 448
 449     /* if true, all symbols are exported */
 450     int rdynamic;
 451
 452     /* if true, only link in referenced objects from archive */
 453     int alacarte_link;
 454
 455     /* address of text section */
 456     unsigned long text_addr;
 457     int has_text_addr;
 458
 459     /* output format, see TCC_OUTPUT_FORMAT_xxx */
 460     int output_format;
 461
 462     /* C language options */
 463     int char_is_unsigned;
 464     int leading_underscore;
 465
 466     /* warning switches */
 467     int warn_write_strings;
 468     int warn_unsupported;
 469     int warn_error;
 470     int warn_none;
 471     int warn_implicit_function_declaration;
 472
 473     /* display some information during compilation */
 474     int verbose;
 475     /* compile with debug symbol (and use them if error during execution) */
 476     int do_debug;
 477     /* compile with built-in memory and bounds checker */
 478     int do_bounds_check;
 479     /* give the path of the tcc libraries */
 480     char *tcc_lib_path;
 481
 482     /* error handling */
 483     void *error_opaque;
 484     void (*error_func)(void *opaque, const char *msg);
 485     int error_set_jmp_enabled;
 486 #ifdef _WIN64
 487     __aligned(16)
 488 #endif
 489     jmp_buf error_jmp_buf;
 490     int nb_errors;
 491
 492     /* tiny assembler state */
 493     Sym *asm_labels;
 494
 495     /* see include_stack_ptr */
 496     BufferedFile *include_stack[INCLUDE_STACK_SIZE];
 497
 498     /* see ifdef_stack_ptr */
 499     int ifdef_stack[IFDEF_STACK_SIZE];
 500
 501     /* see cached_includes */
 502     int cached_includes_hash[CACHED_INCLUDES_HASH_SIZE];
 503
 504     /* pack stack */
 505     int pack_stack[PACK_STACK_SIZE];
 506     int *pack_stack_ptr;
 507
 508     /* output file for preprocessing */
 509     FILE *outfile;
 510
 511     /* for tcc_relocate */
 512     int runtime_added;
 513
 514     struct InlineFunc **inline_fns;
 515     int nb_inline_fns;
 516
 517 #ifdef TCC_TARGET_I386
 518     int seg_size;
 519 #endif
 520
 521     /* section alignment */
 522     unsigned long section_align;
 523
 524 #ifdef TCC_TARGET_PE
 525     /* PE info */
 526     int pe_subsystem;
 527     unsigned long pe_file_align;
 528 #endif
 529
 530 #ifndef TCC_TARGET_PE
 531 #ifdef TCC_TARGET_X86_64
 532     /* write PLT and GOT here */
 533     char *runtime_plt_and_got;
 534     unsigned int runtime_plt_and_got_offset;
 535 #endif
 536 #endif
 537 };
 538
 539 /* The current value can be: */
 540 #define VT_VALMASK   0x00ff
 541 #define VT_CONST     0x00f0  /* constant in vc
 542                               (must be first non register value) */
 543 #define VT_LLOCAL    0x00f1  /* lvalue, offset on stack */
 544 #define VT_LOCAL     0x00f2  /* offset on stack */
 545 #define VT_CMP       0x00f3  /* the value is stored in processor flags (in vc) */
 546 #define VT_JMP       0x00f4  /* value is the consequence of jmp true (even) */
 547 #define VT_JMPI      0x00f5  /* value is the consequence of jmp false (odd) */
 548 #define VT_LVAL      0x0100  /* var is an lvalue */
 549 #define VT_SYM       0x0200  /* a symbol value is added */
 550 #define VT_MUSTCAST  0x0400  /* value must be casted to be correct (used for
 551                                 char/short stored in integer registers) */
 552 #define VT_MUSTBOUND 0x0800  /* bound checking must be done before
 553                                 dereferencing value */
 554 #define VT_BOUNDED   0x8000  /* value is bounded. The address of the
 555                                 bounding function call point is in vc */
 556 #define VT_LVAL_BYTE     0x1000  /* lvalue is a byte */
 557 #define VT_LVAL_SHORT    0x2000  /* lvalue is a short */
 558 #define VT_LVAL_UNSIGNED 0x4000  /* lvalue is unsigned */
 559 #define VT_LVAL_TYPE     (VT_LVAL_BYTE | VT_LVAL_SHORT | VT_LVAL_UNSIGNED)
 560
 561 /* types */
 562 #define VT_INT        0  /* integer type */
 563 #define VT_BYTE       1  /* signed byte type */
 564 #define VT_SHORT      2  /* short type */
 565 #define VT_VOID       3  /* void type */
 566 #define VT_PTR        4  /* pointer */
 567 #define VT_ENUM       5  /* enum definition */
 568 #define VT_FUNC       6  /* function type */
 569 #define VT_STRUCT     7  /* struct/union definition */
 570 #define VT_FLOAT      8  /* IEEE float */
 571 #define VT_DOUBLE     9  /* IEEE double */
 572 #define VT_LDOUBLE   10  /* IEEE long double */
 573 #define VT_BOOL      11  /* ISOC99 boolean type */
 574 #define VT_LLONG     12  /* 64 bit integer */
 575 #define VT_LONG      13  /* long integer (NEVER USED as type, only
 576                             during parsing) */
 577 #define VT_BTYPE      0x000f /* mask for basic type */
 578 #define VT_UNSIGNED   0x0010  /* unsigned type */
 579 #define VT_ARRAY      0x0020  /* array type (also has VT_PTR) */
 580 #define VT_BITFIELD   0x0040  /* bitfield modifier */
 581 #define VT_CONSTANT   0x0800  /* const modifier */
 582 #define VT_VOLATILE   0x1000  /* volatile modifier */
 583 #define VT_SIGNED     0x2000  /* signed type */
 584
 585 /* storage */
 586 #define VT_EXTERN  0x00000080  /* extern definition */
 587 #define VT_STATIC  0x00000100  /* static variable */
 588 #define VT_TYPEDEF 0x00000200  /* typedef definition */
 589 #define VT_INLINE  0x00000400  /* inline definition */
 590 #define VT_IMPORT  0x00004000  /* win32: extern data imported from dll */
 591
 592 #define VT_STRUCT_SHIFT 16   /* shift for bitfield shift values */
 593
 594 /* type mask (except storage) */
 595 #define VT_STORAGE (VT_EXTERN | VT_STATIC | VT_TYPEDEF | VT_INLINE | VT_IMPORT)
 596 #define VT_TYPE    (~(VT_STORAGE))
 597
 598 /* token values */
 599
 600 /* warning: the following compare tokens depend on i386 asm code */
 601 #define TOK_ULT 0x92
 602 #define TOK_UGE 0x93
 603 #define TOK_EQ  0x94
 604 #define TOK_NE  0x95
 605 #define TOK_ULE 0x96
 606 #define TOK_UGT 0x97
 607 #define TOK_Nset 0x98
 608 #define TOK_Nclear 0x99
 609 #define TOK_LT  0x9c
 610 #define TOK_GE  0x9d
 611 #define TOK_LE  0x9e
 612 #define TOK_GT  0x9f
 613
 614 #define TOK_LAND  0xa0
 615 #define TOK_LOR   0xa1
 616
 617 #define TOK_DEC   0xa2
 618 #define TOK_MID   0xa3 /* inc/dec, to void constant */
 619 #define TOK_INC   0xa4
 620 #define TOK_UDIV  0xb0 /* unsigned division */
 621 #define TOK_UMOD  0xb1 /* unsigned modulo */
 622 #define TOK_PDIV  0xb2 /* fast division with undefined rounding for pointers */
 623 #define TOK_CINT   0xb3 /* number in tokc */
 624 #define TOK_CCHAR 0xb4 /* char constant in tokc */
 625 #define TOK_STR   0xb5 /* pointer to string in tokc */
 626 #define TOK_TWOSHARPS 0xb6 /* ## preprocessing token */
 627 #define TOK_LCHAR    0xb7
 628 #define TOK_LSTR     0xb8
 629 #define TOK_CFLOAT   0xb9 /* float constant */
 630 #define TOK_LINENUM  0xba /* line number info */
 631 #define TOK_CDOUBLE  0xc0 /* double constant */
 632 #define TOK_CLDOUBLE 0xc1 /* long double constant */
 633 #define TOK_UMULL    0xc2 /* unsigned 32x32 -> 64 mul */
 634 #define TOK_ADDC1    0xc3 /* add with carry generation */
 635 #define TOK_ADDC2    0xc4 /* add with carry use */
 636 #define TOK_SUBC1    0xc5 /* add with carry generation */
 637 #define TOK_SUBC2    0xc6 /* add with carry use */
 638 #define TOK_CUINT    0xc8 /* unsigned int constant */
 639 #define TOK_CLLONG   0xc9 /* long long constant */
 640 #define TOK_CULLONG  0xca /* unsigned long long constant */
 641 #define TOK_ARROW    0xcb
 642 #define TOK_DOTS     0xcc /* three dots */
 643 #define TOK_SHR      0xcd /* unsigned shift right */
 644 #define TOK_PPNUM    0xce /* preprocessor number */
 645
 646 #define TOK_SHL   0x01 /* shift left */
 647 #define TOK_SAR   0x02 /* signed shift right */
 648
 649 /* assignement operators : normal operator or 0x80 */
 650 #define TOK_A_MOD 0xa5
 651 #define TOK_A_AND 0xa6
 652 #define TOK_A_MUL 0xaa
 653 #define TOK_A_ADD 0xab
 654 #define TOK_A_SUB 0xad
 655 #define TOK_A_DIV 0xaf
 656 #define TOK_A_XOR 0xde
 657 #define TOK_A_OR  0xfc
 658 #define TOK_A_SHL 0x81
 659 #define TOK_A_SAR 0x82
 660
 661 #ifndef offsetof
 662 #define offsetof(type, field) ((size_t) &((type *)0)->field)
 663 #endif
 664
 665 #ifndef countof
 666 #define countof(tab) (sizeof(tab) / sizeof((tab)[0]))
 667 #endif
 668
 669 #define TOK_EOF       (-1)  /* end of file */
 670 #define TOK_LINEFEED  10    /* line feed */
 671
 672 /* all identificators and strings have token above that */
 673 #define TOK_IDENT 256
 674
 675 /* only used for i386 asm opcodes definitions */
 676 #define DEF_ASM(x) DEF(TOK_ASM_ ## x, #x)
 677
 678 #define DEF_BWL(x) \
 679  DEF(TOK_ASM_ ## x ## b, #x "b") \
 680  DEF(TOK_ASM_ ## x ## w, #x "w") \
 681  DEF(TOK_ASM_ ## x ## l, #x "l") \
 682  DEF(TOK_ASM_ ## x, #x)
 683
 684 #define DEF_WL(x) \
 685  DEF(TOK_ASM_ ## x ## w, #x "w") \
 686  DEF(TOK_ASM_ ## x ## l, #x "l") \
 687  DEF(TOK_ASM_ ## x, #x)
 688
 689 #ifdef TCC_TARGET_X86_64
 690
 691 #define DEF_BWLQ(x) \
 692  DEF(TOK_ASM_ ## x ## b, #x "b") \
 693  DEF(TOK_ASM_ ## x ## w, #x "w") \
 694  DEF(TOK_ASM_ ## x ## l, #x "l") \
 695  DEF(TOK_ASM_ ## x ## q, #x "q") \
 696  DEF(TOK_ASM_ ## x, #x)
 697
 698 #define DEF_WLQ(x) \
 699  DEF(TOK_ASM_ ## x ## w, #x "w") \
 700  DEF(TOK_ASM_ ## x ## l, #x "l") \
 701  DEF(TOK_ASM_ ## x ## q, #x "q") \
 702  DEF(TOK_ASM_ ## x, #x)
 703
 704 #endif
 705
 706 #define DEF_FP1(x) \
 707  DEF(TOK_ASM_ ## f ## x ## s, "f" #x "s") \
 708  DEF(TOK_ASM_ ## fi ## x ## l, "fi" #x "l") \
 709  DEF(TOK_ASM_ ## f ## x ## l, "f" #x "l") \
 710  DEF(TOK_ASM_ ## fi ## x ## s, "fi" #x "s")
 711
 712 #define DEF_FP(x) \
 713  DEF(TOK_ASM_ ## f ## x, "f" #x ) \
 714  DEF(TOK_ASM_ ## f ## x ## p, "f" #x "p") \
 715  DEF_FP1(x)
 716
 717 #define DEF_ASMTEST(x) \
 718  DEF_ASM(x ## o) \
 719  DEF_ASM(x ## no) \
 720  DEF_ASM(x ## b) \
 721  DEF_ASM(x ## c) \
 722  DEF_ASM(x ## nae) \
 723  DEF_ASM(x ## nb) \
 724  DEF_ASM(x ## nc) \
 725  DEF_ASM(x ## ae) \
 726  DEF_ASM(x ## e) \
 727  DEF_ASM(x ## z) \
 728  DEF_ASM(x ## ne) \
 729  DEF_ASM(x ## nz) \
 730  DEF_ASM(x ## be) \
 731  DEF_ASM(x ## na) \
 732  DEF_ASM(x ## nbe) \
 733  DEF_ASM(x ## a) \
 734  DEF_ASM(x ## s) \
 735  DEF_ASM(x ## ns) \
 736  DEF_ASM(x ## p) \
 737  DEF_ASM(x ## pe) \
 738  DEF_ASM(x ## np) \
 739  DEF_ASM(x ## po) \
 740  DEF_ASM(x ## l) \
 741  DEF_ASM(x ## nge) \
 742  DEF_ASM(x ## nl) \
 743  DEF_ASM(x ## ge) \
 744  DEF_ASM(x ## le) \
 745  DEF_ASM(x ## ng) \
 746  DEF_ASM(x ## nle) \
 747  DEF_ASM(x ## g)
 748
 749 #define TOK_ASM_int TOK_INT
 750
 751 enum tcc_token {
 752     TOK_LAST = TOK_IDENT - 1,
 753 #define DEF(id, str) id,
 754 #include "tcctok.h"
 755 #undef DEF
 756 };
 757
 758 #define TOK_UIDENT TOK_DEFINE
 759
 760 #ifdef _WIN32
 761 #define snprintf _snprintf
 762 #define vsnprintf _vsnprintf
 763 #ifndef __GNUC__
 764   #define strtold (long double)strtod
 765   #define strtof (float)strtod
 766   #define strtoll (long long)strtol
 767 #endif
 768 #elif defined(TCC_UCLIBC) || defined(__FreeBSD__) || defined(__DragonFly__) \
 769     || defined(__OpenBSD__)
 770 /* currently incorrect */
 771 long double strtold(const char *nptr, char **endptr)
 772 {
 773     return (long double)strtod(nptr, endptr);
 774 }
 775 float strtof(const char *nptr, char **endptr)
 776 {
 777     return (float)strtod(nptr, endptr);
 778 }
 779 #else
 780 /* XXX: need to define this to use them in non ISOC99 context */
 781 extern float strtof (const char *__nptr, char **__endptr);
 782 extern long double strtold (const char *__nptr, char **__endptr);
 783 #endif
 784
 785 #ifdef _WIN32
 786 #define IS_PATHSEP(c) (c == '/' || c == '\\')
 787 #define IS_ABSPATH(p) (IS_PATHSEP(p[0]) || (p[0] && p[1] == ':' && IS_PATHSEP(p[2])))
 788 #define PATHCMP stricmp
 789 #else
 790 #define IS_PATHSEP(c) (c == '/')
 791 #define IS_ABSPATH(p) IS_PATHSEP(p[0])
 792 #define PATHCMP strcmp
 793 #endif
 794
 795 void error(const char *fmt, ...);
 796 void error_noabort(const char *fmt, ...);
 797 void warning(const char *fmt, ...);
 798
 799 void tcc_set_lib_path_w32(TCCState *s);
 800 int tcc_set_flag(TCCState *s, const char *flag_name, int value);
 801 void tcc_print_stats(TCCState *s, int64_t total_time);
 802
 803 void tcc_free(void *ptr);
 804 void *tcc_malloc(unsigned long size);
 805 void *tcc_mallocz(unsigned long size);
 806 void *tcc_realloc(void *ptr, unsigned long size);
 807 char *tcc_strdup(const char *str);
 808
 809 char *tcc_basename(const char *name);
 810 char *tcc_fileextension (const char *name);
 811 char *pstrcpy(char *buf, int buf_size, const char *s);
 812 char *pstrcat(char *buf, int buf_size, const char *s);
 813 void dynarray_add(void ***ptab, int *nb_ptr, void *data);
 814 void dynarray_reset(void *pp, int *n);
 815
 816 /* true if float/double/long double type */
 817 static inline int is_float(int t)
 818 {
 819     int bt;
 820     bt = t & VT_BTYPE;
 821     return bt == VT_LDOUBLE || bt == VT_DOUBLE || bt == VT_FLOAT;
 822 }
 823
 824 /* space exlcuding newline */
 825 static inline int is_space(int ch)
 826 {
 827     return ch == ' ' || ch == '\t' || ch == '\v' || ch == '\f' || ch == '\r';
 828 }
 829
 830 static inline int isid(int c)
 831 {
 832     return (c >= 'a' && c <= 'z')
 833         || (c >= 'A' && c <= 'Z')
 834         || c == '_';
 835 }
 836
 837 static inline int isnum(int c)
 838 {
 839     return c >= '0' && c <= '9';
 840 }
 841
 842 static inline int isoct(int c)
 843 {
 844     return c >= '0' && c <= '7';
 845 }
 846
 847 static inline int toup(int c)
 848 {
 849     if (c >= 'a' && c <= 'z')
 850         return c - 'a' + 'A';
 851     else
 852         return c;
 853 }
 854
 855 /* type handling */
 856 int type_size(CType *type, int *a);
 857 inline CType *pointed_type(CType *type);
 858 int pointed_size(CType *type);
 859 int lvalue_type(int t);
 860 int parse_btype(CType *type, AttributeDef *ad);
 861 void type_decl(CType *type, AttributeDef *ad, int *v, int td);
 862 int compare_types(CType *type1, CType *type2, int unqualified);
 863 int is_compatible_types(CType *type1, CType *type2);
 864 int is_compatible_parameter_types(CType *type1, CType *type2);
 865
 866 int ieee_finite(double d);
 867 void vpushi(int v);
 868 void vpushll(long long v);
 869 void vrott(int n);
 870 void vnrott(int n);
 871 void lexpand_nr(void);
 872 static void vpush_global_sym(CType *type, int v);
 873 void vset(CType *type, int r, int v);
 874 void type_to_str(char *buf, int buf_size,
 875                  CType *type, const char *varstr);
 876 Sym *get_sym_ref(CType *type, Section *sec,
 877                         unsigned long offset, unsigned long size);
 878 Sym *external_global_sym(int v, CType *type, int r);
 879
 880 int tcc_add_dll(TCCState *s, const char *filename, int flags);
 881
 882 #define AFF_PRINT_ERROR     0x0001 /* print error if file not found */
 883 #define AFF_REFERENCED_DLL  0x0002 /* load a referenced dll from another dll */
 884 #define AFF_PREPROCESS      0x0004 /* preprocess file */
 885 int tcc_add_file_internal(TCCState *s, const char *filename, int flags);
 886
 887
 888 Section *new_section(TCCState *s1, const char *name, int sh_type, int sh_flags);
 889 void free_section(Section *s);
 890 void section_realloc(Section *sec, unsigned long new_size);
 891 void *section_ptr_add(Section *sec, unsigned long size);
 892 Section *find_section(TCCState *s1, const char *name);
 893 void put_extern_sym2(
 894     Sym *sym, Section *section,
 895     unsigned long value, unsigned long size, int can_add_underscore);
 896 void put_extern_sym(
 897     Sym *sym, Section *section,
 898     unsigned long value, unsigned long size);
 899 void greloc(Section *s, Sym *sym, unsigned long offset, int type);
 900
 901 void strcat_vprintf(char *buf, int buf_size, const char *fmt, va_list ap);
 902 void strcat_printf(char *buf, int buf_size, const char *fmt, ...);
 903
 904 BufferedFile *tcc_open(TCCState *s1, const char *filename);
 905 void tcc_close(BufferedFile *bf);
 906 int tcc_compile(TCCState *s1);
 907
 908 void expect(const char *msg);
 909 void skip(int c);
 910 void test_lvalue(void);
 911 void *resolve_sym(TCCState *s1, const char *sym);
 912
 913 /* interpret a subset of GNU ldscripts to handle the dummy libc.so
 914    files */
 915 int tcc_load_ldscript(TCCState *s1);
 916 /* load a DLL and all referenced DLLs. 'level = 0' means that the DLL
 917    is referenced by the user (so it should be added as DT_NEEDED in
 918    the generated ELF file) */
 919 int tcc_load_dll(TCCState *s1, int fd, const char *filename, int level);
 920
 921 /********************************************************/
 922 /* global variables */
 923
 924 /* display benchmark infos */
 925 extern int total_lines;
 926 extern int total_bytes;
 927
 928 /* parser */
 929 extern struct BufferedFile *file;
 930 extern int ch, tok;
 931 extern CValue tokc;
 932 extern CString tokcstr; /* current parsed string, if any */
 933 /* additional informations about token */
 934 extern int tok_flags;
 935 #define TOK_FLAG_BOL   0x0001 /* beginning of line before */
 936 #define TOK_FLAG_BOF   0x0002 /* beginning of file before */
 937 #define TOK_FLAG_ENDIF 0x0004 /* a endif was found matching starting #ifdef */
 938 #define TOK_FLAG_EOF   0x0008 /* end of file */
 939
 940 extern int *macro_ptr, *macro_ptr_allocated;
 941 extern int *unget_saved_macro_ptr;
 942 extern int unget_saved_buffer[TOK_MAX_SIZE + 1];
 943 extern int unget_buffer_enabled;
 944 extern int parse_flags;
 945 #define PARSE_FLAG_PREPROCESS 0x0001 /* activate preprocessing */
 946 #define PARSE_FLAG_TOK_NUM    0x0002 /* return numbers instead of TOK_PPNUM */
 947 #define PARSE_FLAG_LINEFEED   0x0004 /* line feed is returned as a
 948                                         token. line feed is also
 949                                         returned at eof */
 950 #define PARSE_FLAG_ASM_COMMENTS 0x0008 /* '#' can be used for line comment */
 951 #define PARSE_FLAG_SPACES     0x0010 /* next() returns space tokens (for -E) */
 952
 953 extern Section *text_section, *data_section, *bss_section; /* predefined sections */
 954 extern Section *cur_text_section; /* current section where function code is
 955                               generated */
 956 #ifdef CONFIG_TCC_ASM
 957 extern Section *last_text_section; /* to handle .previous asm directive */
 958 #endif
 959 /* bound check related sections */
 960 extern Section *bounds_section; /* contains global data bound description */
 961 extern Section *lbounds_section; /* contains local data bound description */
 962 /* symbol sections */
 963 extern Section *symtab_section, *strtab_section;
 964
 965 /* debug sections */
 966 extern Section *stab_section, *stabstr_section;
 967
 968 /* loc : local variable index
 969    ind : output code index
 970    rsym: return symbol
 971    anon_sym: anonymous symbol index
 972 */
 973 extern int rsym, anon_sym, ind, loc;
 974 /* expression generation modifiers */
 975 extern int const_wanted; /* true if constant wanted */
 976 extern int nocode_wanted; /* true if no code generation wanted for an expression */
 977 extern int global_expr;  /* true if compound literals must be allocated
 978                             globally (used during initializers parsing */
 979 extern CType func_vt; /* current function return type (used by return
 980                          instruction) */
 981 extern int func_vc;
 982 extern int last_line_num, last_ind, func_ind; /* debug last line number and pc */
 983 extern int tok_ident;
 984 extern TokenSym **table_ident;
 985 extern TokenSym *hash_ident[TOK_HASH_SIZE];
 986 extern char token_buf[STRING_MAX_SIZE + 1];
 987 extern char *funcname;
 988 extern Sym *global_stack, *local_stack;
 989 extern Sym *define_stack;
 990 extern Sym *global_label_stack, *local_label_stack;
 991 /* symbol allocator */
 992 #define SYM_POOL_NB (8192 / sizeof(Sym))
 993 extern Sym *sym_free_first;
 994 extern void **sym_pools;
 995 extern int nb_sym_pools;
 996
 997 extern SValue vstack[VSTACK_SIZE], *vtop;
 998 /* some predefined types */
 999 extern CType char_pointer_type, func_old_type, int_type;
1000
1001 /* use GNU C extensions */
1002 extern int gnu_ext;
1003
1004 /* use Tiny C extensions */
1005 extern int tcc_ext;
1006
1007 /* max number of callers shown if error */
1008 #ifdef CONFIG_TCC_BACKTRACE
1009 extern int num_callers;
1010 extern const char **rt_bound_error_msg;
1011 extern unsigned long rt_prog_main;
1012 #endif
1013
1014 /* XXX: get rid of this ASAP */
1015 extern struct TCCState *tcc_state;
1016
1017 /*
1018  * Include the target specific definitions.
1019  */
1020 #ifdef TCC_TARGET_I386
1021 #include "i386-gen.h"
1022 #endif
1023
1024 #ifdef TCC_TARGET_ARM
1025 #include "arm-gen.h"
1026 #endif
1027
1028 #ifdef TCC_TARGET_C67
1029 #include "c67-gen.h"
1030 #endif
1031
1032 #ifdef TCC_TARGET_X86_64
1033 #include "x86_64-gen.h"
1034 #endif
1035
1036 #include "tccpp.h"
1037 #include "tcccoff.h"
1038 #include "tccelf.h"
1039 #include "tcccstring.h"
1040 #include "tccgen.h"
1041 #include "tccasm.h"
1042 #include "tccld.h"
1043 #include "tccsym.h"
1044 #include "tccutil.h"
1045
1046 #ifdef TCC_TARGET_PE
1047 #include "tccpe.h"
1048 #endif
1049
1050
1051 #endif /* __TCC_H__ */