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 #include "tccboot.h"
  29 #define CONFIG_TCC_STATIC
  30 #else
  31
  32 #include <stdlib.h>
  33 #include <stdio.h>
  34 #include <stdarg.h>
  35 #include <string.h>
  36 #include <errno.h>
  37 #include <math.h>
  38 #include <signal.h>
  39 #include <fcntl.h>
  40 #include <setjmp.h>
  41 #include <time.h>
  42
  43 #ifdef CONFIG_TCCASSERT
  44 #include <assert.h>
  45 #define TCC_ASSERT(ex) assert(ex)
  46 #else
  47 #define TCC_ASSERT(ex)
  48 #endif
  49
  50 #ifndef _WIN32
  51 # include <unistd.h>
  52 # include <sys/time.h>
  53 # include <sys/ucontext.h>
  54 # include <sys/mman.h>
  55 # ifndef CONFIG_TCC_STATIC
  56 #  include <dlfcn.h>
  57 # endif
  58 /* XXX: need to define this to use them in non ISOC99 context */
  59  extern float strtof (const char *__nptr, char **__endptr);
  60  extern long double strtold (const char *__nptr, char **__endptr);
  61 #else /* on _WIN32: */
  62 # include <windows.h>
  63 # include <sys/timeb.h>
  64 # include <io.h> /* open, close etc. */
  65 # include <direct.h> /* getcwd */
  66 # ifdef __GNUC__
  67 #  include <stdint.h>
  68 # endif
  69 # define inline __inline
  70 # define inp next_inp
  71 # define snprintf _snprintf
  72 # define vsnprintf _vsnprintf
  73 # ifndef __GNUC__
  74 #  define strtold (long double)strtod
  75 #  define strtof (float)strtod
  76 #  define strtoll _strtoi64
  77 #  define strtoull _strtoui64
  78 # endif
  79 # ifdef LIBTCC_AS_DLL
  80 #  define LIBTCCAPI __declspec(dllexport)
  81 #  define PUB_FUNC LIBTCCAPI
  82 # endif
  83 #endif
  84
  85 #endif /* !CONFIG_TCCBOOT */
  86
  87 #ifndef O_BINARY
  88 # define O_BINARY 0
  89 #endif
  90
  91 #ifdef __GNUC__
  92 # define NORETURN __attribute__ ((noreturn))
  93 #elif defined _MSC_VER
  94 # define NORETURN __declspec(noreturn)
  95 #else
  96 # define NORETURN
  97 #endif
  98
  99 #ifdef _WIN32
 100 # define IS_DIRSEP(c) (c == '/' || c == '\\')
 101 # define IS_ABSPATH(p) (IS_DIRSEP(p[0]) || (p[0] && p[1] == ':' && IS_DIRSEP(p[2])))
 102 # define PATHCMP stricmp
 103 #else
 104 # define IS_DIRSEP(c) (c == '/')
 105 # define IS_ABSPATH(p) IS_DIRSEP(p[0])
 106 # define PATHCMP strcmp
 107 #endif
 108
 109 #ifdef TCC_TARGET_PE
 110 #define PATHSEP ';'
 111 #else
 112 #define PATHSEP ':'
 113 #endif
 114
 115 #include "elf.h"
 116 #ifdef TCC_TARGET_X86_64
 117 # define ELFCLASSW ELFCLASS64
 118 # define ElfW(type) Elf##64##_##type
 119 # define ELFW(type) ELF##64##_##type
 120 # define ElfW_Rel ElfW(Rela)
 121 # define SHT_RELX SHT_RELA
 122 # define REL_SECTION_FMT ".rela%s"
 123 /* XXX: DLL with PLT would only work with x86-64 for now */
 124 # define TCC_OUTPUT_DLL_WITH_PLT
 125 #else
 126 # define ELFCLASSW ELFCLASS32
 127 # define ElfW(type) Elf##32##_##type
 128 # define ELFW(type) ELF##32##_##type
 129 # define ElfW_Rel ElfW(Rel)
 130 # define SHT_RELX SHT_REL
 131 # define REL_SECTION_FMT ".rel%s"
 132 #endif
 133
 134 /* target address type */
 135 #define addr_t ElfW(Addr)
 136
 137 #include "stab.h"
 138 #include "libtcc.h"
 139
 140 /* parser debug */
 141 /* #define PARSE_DEBUG */
 142 /* preprocessor debug */
 143 /* #define PP_DEBUG */
 144 /* include file debug */
 145 /* #define INC_DEBUG */
 146 /* memory leak debug */
 147 /* #define MEM_DEBUG */
 148 /* assembler debug */
 149 /* #define ASM_DEBUG */
 150
 151 /* target selection */
 152 /* #define TCC_TARGET_I386   *//* i386 code generator */
 153 /* #define TCC_TARGET_ARM    *//* ARMv4 code generator */
 154 /* #define TCC_TARGET_C67    *//* TMS320C67xx code generator */
 155 /* #define TCC_TARGET_X86_64 *//* x86-64 code generator */
 156
 157 /* default target is I386 */
 158 #if !defined(TCC_TARGET_I386) && !defined(TCC_TARGET_ARM) && \
 159     !defined(TCC_TARGET_C67) && !defined(TCC_TARGET_X86_64)
 160 #define TCC_TARGET_I386
 161 #endif
 162
 163 #if !defined(TCC_UCLIBC) && !defined(TCC_TARGET_ARM) && \
 164     !defined(TCC_TARGET_C67) && !defined(TCC_TARGET_X86_64) && \
 165     !defined(CONFIG_USE_LIBGCC)
 166 #define CONFIG_TCC_BCHECK /* enable bound checking code */
 167 #endif
 168
 169 /* define it to include assembler support */
 170 #if !defined(TCC_TARGET_ARM) && !defined(TCC_TARGET_C67)
 171 #define CONFIG_TCC_ASM
 172 #endif
 173
 174 /* object format selection */
 175 #if defined(TCC_TARGET_C67)
 176 #define TCC_TARGET_COFF
 177 #endif
 178
 179 /* only native compiler supports -run */
 180 #if defined _WIN32 == defined TCC_TARGET_PE
 181 # if (defined __i386__ || defined _X86_) && defined TCC_TARGET_I386
 182 #  define TCC_IS_NATIVE
 183 # elif (defined __x86_64__ || defined _AMD64_) && defined TCC_TARGET_X86_64
 184 #  define TCC_IS_NATIVE
 185 # elif defined __arm__ && defined TCC_TARGET_ARM
 186 #  define TCC_IS_NATIVE
 187 # endif
 188 #endif
 189
 190 #if defined TCC_IS_NATIVE && !defined CONFIG_TCCBOOT
 191 # define CONFIG_TCC_BACKTRACE
 192 #endif
 193
 194 /* ------------ path configuration ------------ */
 195
 196 #ifndef CONFIG_SYSROOT
 197 # define CONFIG_SYSROOT ""
 198 #endif
 199 #ifndef CONFIG_TCCDIR
 200 # define CONFIG_TCCDIR "."
 201 #endif
 202 #ifndef CONFIG_LDDIR
 203 # define CONFIG_LDDIR "lib"
 204 #endif
 205
 206 #ifdef CONFIG_MULTIARCHDIR
 207 # define USE_MUADIR(s) s "/" CONFIG_MULTIARCHDIR
 208 # define ALSO_MUADIR(s) s "/" CONFIG_MULTIARCHDIR ":" s
 209 #else
 210 # define USE_MUADIR(s) s
 211 # define ALSO_MUADIR(s) s
 212 #endif
 213
 214 /* path to find crt1.o, crti.o and crtn.o */
 215 #ifndef CONFIG_TCC_CRTPREFIX
 216 # define CONFIG_TCC_CRTPREFIX USE_MUADIR(CONFIG_SYSROOT "/usr/" CONFIG_LDDIR)
 217 #endif
 218
 219 /* Below: {B} is substituted by CONFIG_TCCDIR (rsp. -B option) */
 220
 221 /* system include paths */
 222 #ifndef CONFIG_TCC_SYSINCLUDEPATHS
 223 # ifdef TCC_TARGET_PE
 224 #  define CONFIG_TCC_SYSINCLUDEPATHS "{B}/include;{B}/include/winapi"
 225 # else
 226 #  define CONFIG_TCC_SYSINCLUDEPATHS \
 227         ALSO_MUADIR(CONFIG_SYSROOT "/usr/local/include") \
 228     ":" ALSO_MUADIR(CONFIG_SYSROOT "/usr/include") \
 229     ":" "{B}/include"
 230 # endif
 231 #endif
 232
 233 /* library search paths */
 234 #ifndef CONFIG_TCC_LIBPATHS
 235 # ifdef TCC_TARGET_PE
 236 #  define CONFIG_TCC_LIBPATHS "{B}/lib"
 237 # else
 238 #  define CONFIG_TCC_LIBPATHS \
 239         ALSO_MUADIR(CONFIG_SYSROOT "/usr/" CONFIG_LDDIR) \
 240     ":" ALSO_MUADIR(CONFIG_SYSROOT "/" CONFIG_LDDIR) \
 241     ":" ALSO_MUADIR(CONFIG_SYSROOT "/usr/local/" CONFIG_LDDIR)
 242 # endif
 243 #endif
 244
 245 /* name of ELF interpreter */
 246 #ifndef CONFIG_TCC_ELFINTERP
 247 # if defined __FreeBSD__
 248 #  define CONFIG_TCC_ELFINTERP "/libexec/ld-elf.so.1"
 249 # elif defined __FreeBSD_kernel__
 250 #  if defined(TCC_TARGET_X86_64)
 251 #   define CONFIG_TCC_ELFINTERP "/lib/ld-kfreebsd-x86-64.so.1"
 252 #  else
 253 #   define CONFIG_TCC_ELFINTERP "/lib/ld.so.1"
 254 #  endif
 255 # elif defined __DragonFly__
 256 #  define CONFIG_TCC_ELFINTERP "/usr/libexec/ld-elf.so.2"
 257 # elif defined __GNU__
 258 #  define CONFIG_TCC_ELFINTERP "/lib/ld.so"
 259 # elif defined(TCC_TARGET_X86_64)
 260 #  define CONFIG_TCC_ELFINTERP "/lib64/ld-linux-x86-64.so.2"
 261 # elif defined(TCC_UCLIBC)
 262 #  define CONFIG_TCC_ELFINTERP "/lib/ld-uClibc.so.0"
 263 # elif defined(TCC_TARGET_PE)
 264 #  define CONFIG_TCC_ELFINTERP "-"
 265 # elif !defined(TCC_ARM_EABI)
 266 #  define CONFIG_TCC_ELFINTERP "/lib/ld-linux.so.2"
 267 # endif
 268 #endif
 269
 270 /* var elf_interp dans *-gen.c */
 271 #ifdef CONFIG_TCC_ELFINTERP
 272 # define DEFAULT_ELFINTERP(s) CONFIG_TCC_ELFINTERP
 273 #else
 274 # define DEFAULT_ELFINTERP(s) default_elfinterp(s)
 275 #endif
 276
 277 /* library to use with CONFIG_USE_LIBGCC instead of libtcc1.a */
 278 #define TCC_LIBGCC USE_MUADIR(CONFIG_SYSROOT "/" CONFIG_LDDIR) "/libgcc_s.so.1"
 279
 280 /* -------------------------------------------- */
 281 /* include the target specific definitions */
 282
 283 #define TARGET_DEFS_ONLY
 284 #ifdef TCC_TARGET_I386
 285 # include "i386-gen.c"
 286 #endif
 287 #ifdef TCC_TARGET_X86_64
 288 # include "x86_64-gen.c"
 289 #endif
 290 #ifdef TCC_TARGET_ARM
 291 # include "arm-gen.c"
 292 #endif
 293 #ifdef TCC_TARGET_C67
 294 # include "coff.h"
 295 # include "c67-gen.c"
 296 #endif
 297 #undef TARGET_DEFS_ONLY
 298
 299 /* -------------------------------------------- */
 300
 301 #define INCLUDE_STACK_SIZE  32
 302 #define IFDEF_STACK_SIZE    64
 303 #define VSTACK_SIZE         256
 304 #define STRING_MAX_SIZE     1024
 305 #define PACK_STACK_SIZE     8
 306
 307 #define TOK_HASH_SIZE       8192 /* must be a power of two */
 308 #define TOK_ALLOC_INCR      512  /* must be a power of two */
 309 #define TOK_MAX_SIZE        4 /* token max size in int unit when stored in string */
 310
 311 /* token symbol management */
 312 typedef struct TokenSym {
 313     struct TokenSym *hash_next;
 314     struct Sym *sym_define; /* direct pointer to define */
 315     struct Sym *sym_label; /* direct pointer to label */
 316     struct Sym *sym_struct; /* direct pointer to structure */
 317     struct Sym *sym_identifier; /* direct pointer to identifier */
 318     int tok; /* token number */
 319     int len;
 320     char str[1];
 321 } TokenSym;
 322
 323 #ifdef TCC_TARGET_PE
 324 typedef unsigned short nwchar_t;
 325 #else
 326 typedef int nwchar_t;
 327 #endif
 328
 329 typedef struct CString {
 330     int size; /* size in bytes */
 331     void *data; /* either 'char *' or 'nwchar_t *' */
 332     int size_allocated;
 333     void *data_allocated; /* if non NULL, data has been malloced */
 334 } CString;
 335
 336 /* type definition */
 337 typedef struct CType {
 338     int t;
 339     struct Sym *ref;
 340 } CType;
 341
 342 /* constant value */
 343 typedef union CValue {
 344     long double ld;
 345     double d;
 346     float f;
 347     int i;
 348     unsigned int ui;
 349     unsigned int ul; /* address (should be unsigned long on 64 bit cpu) */
 350     long long ll;
 351     unsigned long long ull;
 352     struct CString *cstr;
 353     addr_t ptr_offset;
 354     int tab[LDOUBLE_SIZE/4];
 355 } CValue;
 356
 357 /* value on stack */
 358 typedef struct SValue {
 359     CType type;      /* type */
 360     unsigned short r;      /* register + flags */
 361     unsigned short r2;     /* second register, used for 'long long'
 362                               type. If not used, set to VT_CONST */
 363     CValue c;              /* constant, if VT_CONST */
 364     struct Sym *sym;       /* symbol, if (VT_SYM | VT_CONST) */
 365 } SValue;
 366
 367 struct Attribute {
 368     unsigned
 369         func_call     : 3, /* calling convention (0..5), see below */
 370         aligned       : 5, /* alignement (0..16) */
 371         packed        : 1,
 372         func_export   : 1,
 373         func_import   : 1,
 374         func_args     : 5,
 375         func_proto    : 1,
 376         mode          : 4,
 377         weak          : 1,
 378         visibility    : 2,
 379         fill          : 8; // 8 bits left to fit well in union below
 380 };
 381
 382 /* GNUC attribute definition */
 383 typedef struct AttributeDef {
 384     struct Attribute a;
 385     struct Section *section;
 386     int alias_target;    /* token */
 387 } AttributeDef;
 388
 389 /* symbol management */
 390 typedef struct Sym {
 391     int v;    /* symbol token */
 392     char *asm_label;    /* associated asm label */
 393     union {
 394         long r;    /* associated register */
 395         struct Attribute a;
 396     };
 397     union {
 398         long c;    /* associated number */
 399         int *d;   /* define token stream */
 400     };
 401     CType type;    /* associated type */
 402     union {
 403         struct Sym *next; /* next related symbol */
 404         long jnext; /* next jump label */
 405     };
 406     struct Sym *prev; /* prev symbol in stack */
 407     struct Sym *prev_tok; /* previous symbol for this token */
 408 } Sym;
 409
 410 /* section definition */
 411 /* XXX: use directly ELF structure for parameters ? */
 412 /* special flag to indicate that the section should not be linked to
 413    the other ones */
 414 #define SHF_PRIVATE 0x80000000
 415
 416 /* special flag, too */
 417 #define SECTION_ABS ((void *)1)
 418
 419 typedef struct Section {
 420     unsigned long data_offset; /* current data offset */
 421     unsigned char *data;       /* section data */
 422     unsigned long data_allocated; /* used for realloc() handling */
 423     int sh_name;             /* elf section name (only used during output) */
 424     int sh_num;              /* elf section number */
 425     int sh_type;             /* elf section type */
 426     int sh_flags;            /* elf section flags */
 427     int sh_info;             /* elf section info */
 428     int sh_addralign;        /* elf section alignment */
 429     int sh_entsize;          /* elf entry size */
 430     unsigned long sh_size;   /* section size (only used during output) */
 431     addr_t sh_addr;          /* address at which the section is relocated */
 432     unsigned long sh_offset; /* file offset */
 433     int nb_hashed_syms;      /* used to resize the hash table */
 434     struct Section *link;    /* link to another section */
 435     struct Section *reloc;   /* corresponding section for relocation, if any */
 436     struct Section *hash;     /* hash table for symbols */
 437     struct Section *next;
 438     char name[1];           /* section name */
 439 } Section;
 440
 441 typedef struct DLLReference {
 442     int level;
 443     void *handle;
 444     char name[1];
 445 } DLLReference;
 446
 447 /* -------------------------------------------------- */
 448
 449 #define SYM_STRUCT     0x40000000 /* struct/union/enum symbol space */
 450 #define SYM_FIELD      0x20000000 /* struct/union field symbol space */
 451 #define SYM_FIRST_ANOM 0x10000000 /* first anonymous sym */
 452
 453 #define VLA_SP_LOC_SET     0x01 /* Location of SP on stack has been allocated */
 454 #define VLA_SP_SAVED       0x02 /* SP has been saved to slot already */
 455 #define VLA_NEED_NEW_FRAME 0x04 /* Needs new frame for next VLA */
 456 #define VLA_IN_SCOPE       0x08 /* One or more VLAs are in scope */
 457 #define VLA_SCOPE_FLAGS    (VLA_SP_SAVED|VLA_NEED_NEW_FRAME|VLA_IN_SCOPE) /* Flags which are saved and restored upon entering and exiting a block */
 458
 459 /* stored in 'Sym.c' field */
 460 #define FUNC_NEW       1 /* ansi function prototype */
 461 #define FUNC_OLD       2 /* old function prototype */
 462 #define FUNC_ELLIPSIS  3 /* ansi function prototype with ... */
 463
 464 /* stored in 'Sym.r' field */
 465 #define FUNC_CDECL     0 /* standard c call */
 466 #define FUNC_STDCALL   1 /* pascal c call */
 467 #define FUNC_FASTCALL1 2 /* first param in %eax */
 468 #define FUNC_FASTCALL2 3 /* first parameters in %eax, %edx */
 469 #define FUNC_FASTCALL3 4 /* first parameter in %eax, %edx, %ecx */
 470 #define FUNC_FASTCALLW 5 /* first parameter in %ecx, %edx */
 471
 472 /* field 'Sym.t' for macros */
 473 #define MACRO_OBJ      0 /* object like macro */
 474 #define MACRO_FUNC     1 /* function like macro */
 475
 476 /* field 'Sym.r' for C labels */
 477 #define LABEL_DEFINED  0 /* label is defined */
 478 #define LABEL_FORWARD  1 /* label is forward defined */
 479 #define LABEL_DECLARED 2 /* label is declared but never used */
 480
 481 /* type_decl() types */
 482 #define TYPE_ABSTRACT  1 /* type without variable */
 483 #define TYPE_DIRECT    2 /* type with variable */
 484
 485 #define IO_BUF_SIZE 8192
 486
 487 typedef struct BufferedFile {
 488     uint8_t *buf_ptr;
 489     uint8_t *buf_end;
 490     int fd;
 491     struct BufferedFile *prev;
 492     int line_num;    /* current line number - here to simplify code */
 493     int ifndef_macro;  /* #ifndef macro / #endif search */
 494     int ifndef_macro_saved; /* saved ifndef_macro */
 495     int *ifdef_stack_ptr; /* ifdef_stack value at the start of the file */
 496     char filename[1024];    /* filename */
 497     unsigned char buffer[IO_BUF_SIZE + 1]; /* extra size for CH_EOB char */
 498 } BufferedFile;
 499
 500 #define CH_EOB   '\\'       /* end of buffer or '\0' char in file */
 501 #define CH_EOF   (-1)   /* end of file */
 502
 503 /* parsing state (used to save parser state to reparse part of the
 504    source several times) */
 505 typedef struct ParseState {
 506     const int *macro_ptr;
 507     int line_num;
 508     int tok;
 509     CValue tokc;
 510 } ParseState;
 511
 512 /* used to record tokens */
 513 typedef struct TokenString {
 514     int *str;
 515     int len;
 516     int allocated_len;
 517     int last_line_num;
 518 } TokenString;
 519
 520 /* inline functions */
 521 typedef struct InlineFunc {
 522     int *token_str;
 523     Sym *sym;
 524     char filename[1];
 525 } InlineFunc;
 526
 527 /* include file cache, used to find files faster and also to eliminate
 528    inclusion if the include file is protected by #ifndef ... #endif */
 529 typedef struct CachedInclude {
 530     int ifndef_macro;
 531     int hash_next; /* -1 if none */
 532     char filename[1]; /* path specified in #include */
 533 } CachedInclude;
 534
 535 #define CACHED_INCLUDES_HASH_SIZE 512
 536
 537 #ifdef CONFIG_TCC_ASM
 538 typedef struct ExprValue {
 539     uint32_t v;
 540     Sym *sym;
 541 } ExprValue;
 542
 543 #define MAX_ASM_OPERANDS 30
 544 typedef struct ASMOperand {
 545     int id; /* GCC 3 optionnal identifier (0 if number only supported */
 546     char *constraint;
 547     char asm_str[16]; /* computed asm string for operand */
 548     SValue *vt; /* C value of the expression */
 549     int ref_index; /* if >= 0, gives reference to a output constraint */
 550     int input_index; /* if >= 0, gives reference to an input constraint */
 551     int priority; /* priority, used to assign registers */
 552     int reg; /* if >= 0, register number used for this operand */
 553     int is_llong; /* true if double register value */
 554     int is_memory; /* true if memory operand */
 555     int is_rw;     /* for '+' modifier */
 556 } ASMOperand;
 557 #endif
 558
 559 struct sym_attr {
 560     unsigned long got_offset;
 561     unsigned long plt_offset;
 562 #ifdef TCC_TARGET_ARM
 563     unsigned char plt_thumb_stub:1;
 564 #endif
 565 };
 566
 567 struct TCCState {
 568
 569     int verbose; /* if true, display some information during compilation */
 570     int nostdinc; /* if true, no standard headers are added */
 571     int nostdlib; /* if true, no standard libraries are added */
 572     int nocommon; /* if true, do not use common symbols for .bss data */
 573     int static_link; /* if true, static linking is performed */
 574     int rdynamic; /* if true, all symbols are exported */
 575     int symbolic; /* if true, resolve symbols in the current module first */
 576     int alacarte_link; /* if true, only link in referenced objects from archive */
 577
 578     char *tcc_lib_path; /* CONFIG_TCCDIR or -B option */
 579     char *soname; /* as specified on the command line (-soname) */
 580     char *rpath; /* as specified on the command line (-Wl,-rpath=) */
 581
 582     /* output type, see TCC_OUTPUT_XXX */
 583     int output_type;
 584     /* output format, see TCC_OUTPUT_FORMAT_xxx */
 585     int output_format;
 586
 587     /* C language options */
 588     int char_is_unsigned;
 589     int leading_underscore;
 590
 591     /* warning switches */
 592     int warn_write_strings;
 593     int warn_unsupported;
 594     int warn_error;
 595     int warn_none;
 596     int warn_implicit_function_declaration;
 597
 598     /* compile with debug symbol (and use them if error during execution) */
 599     int do_debug;
 600 #ifdef CONFIG_TCC_BCHECK
 601     /* compile with built-in memory and bounds checker */
 602     int do_bounds_check;
 603 #endif
 604 #ifdef TCC_TARGET_ARM
 605     enum float_abi float_abi; /* float ABI of the generated code*/
 606 #endif
 607
 608     addr_t text_addr; /* address of text section */
 609     int has_text_addr;
 610
 611     unsigned long section_align; /* section alignment */
 612
 613     char *init_symbol; /* symbols to call at load-time (not used currently) */
 614     char *fini_symbol; /* symbols to call at unload-time (not used currently) */
 615
 616 #ifdef TCC_TARGET_I386
 617     int seg_size; /* 32. Can be 16 with i386 assembler (.code16) */
 618 #endif
 619
 620     /* array of all loaded dlls (including those referenced by loaded dlls) */
 621     DLLReference **loaded_dlls;
 622     int nb_loaded_dlls;
 623
 624     /* include paths */
 625     char **include_paths;
 626     int nb_include_paths;
 627
 628     char **sysinclude_paths;
 629     int nb_sysinclude_paths;
 630
 631     /* library paths */
 632     char **library_paths;
 633     int nb_library_paths;
 634
 635     /* crt?.o object path */
 636     char **crt_paths;
 637     int nb_crt_paths;
 638
 639     /* error handling */
 640     void *error_opaque;
 641     void (*error_func)(void *opaque, const char *msg);
 642     int error_set_jmp_enabled;
 643     jmp_buf error_jmp_buf;
 644     int nb_errors;
 645
 646     /* output file for preprocessing (-E) */
 647     FILE *ppfp;
 648
 649     /* for -MD/-MF: collected dependencies for this compilation */
 650     char **target_deps;
 651     int nb_target_deps;
 652
 653     /* compilation */
 654     BufferedFile *include_stack[INCLUDE_STACK_SIZE];
 655     BufferedFile **include_stack_ptr;
 656
 657     int ifdef_stack[IFDEF_STACK_SIZE];
 658     int *ifdef_stack_ptr;
 659
 660     /* included files enclosed with #ifndef MACRO */
 661     int cached_includes_hash[CACHED_INCLUDES_HASH_SIZE];
 662     CachedInclude **cached_includes;
 663     int nb_cached_includes;
 664
 665     /* #pragma pack stack */
 666     int pack_stack[PACK_STACK_SIZE];
 667     int *pack_stack_ptr;
 668
 669     /* inline functions are stored as token lists and compiled last
 670        only if referenced */
 671     struct InlineFunc **inline_fns;
 672     int nb_inline_fns;
 673
 674     /* sections */
 675     Section **sections;
 676     int nb_sections; /* number of sections, including first dummy section */
 677
 678     Section **priv_sections;
 679     int nb_priv_sections; /* number of private sections */
 680
 681     /* got & plt handling */
 682     Section *got;
 683     Section *plt;
 684     struct sym_attr *sym_attrs;
 685     int nb_sym_attrs;
 686     /* give the correspondance from symtab indexes to dynsym indexes */
 687     int *symtab_to_dynsym;
 688
 689     /* temporary dynamic symbol sections (for dll loading) */
 690     Section *dynsymtab_section;
 691     /* exported dynamic symbol section */
 692     Section *dynsym;
 693     /* copy of the gobal symtab_section variable */
 694     Section *symtab;
 695     /* tiny assembler state */
 696     Sym *asm_labels;
 697
 698 #ifdef TCC_TARGET_PE
 699     /* PE info */
 700     int pe_subsystem;
 701     unsigned pe_file_align;
 702     unsigned pe_stack_size;
 703 # ifdef TCC_TARGET_X86_64
 704     Section *uw_pdata;
 705     int uw_sym;
 706     unsigned uw_offs;
 707 # endif
 708 #endif
 709
 710 #ifdef TCC_IS_NATIVE
 711     const char *runtime_main;
 712     /* for tcc_relocate */
 713     void *runtime_mem;
 714 # ifdef HAVE_SELINUX
 715     void *write_mem;
 716     unsigned long mem_size;
 717 # endif
 718 #endif
 719
 720     /* used by main and tcc_parse_args only */
 721     char **files; /* files seen on command line */
 722     int nb_files; /* number thereof */
 723     int nb_libraries; /* number of libs thereof */
 724     char *outfile; /* output filename */
 725     char *option_m; /* only -m32/-m64 handled */
 726     int print_search_dirs; /* option */
 727     int option_r; /* option -r */
 728     int do_bench; /* option -bench */
 729     int gen_deps; /* option -MD  */
 730     char *deps_outfile; /* option -MF */
 731 };
 732
 733 /* The current value can be: */
 734 #define VT_VALMASK   0x003f  /* mask for value location, register or: */
 735 #define VT_CONST     0x0030  /* constant in vc (must be first non register value) */
 736 #define VT_LLOCAL    0x0031  /* lvalue, offset on stack */
 737 #define VT_LOCAL     0x0032  /* offset on stack */
 738 #define VT_CMP       0x0033  /* the value is stored in processor flags (in vc) */
 739 #define VT_JMP       0x0034  /* value is the consequence of jmp true (even) */
 740 #define VT_JMPI      0x0035  /* value is the consequence of jmp false (odd) */
 741 #define VT_REF       0x0040  /* value is pointer to structure rather than address */
 742 #define VT_LVAL      0x0100  /* var is an lvalue */
 743 #define VT_SYM       0x0200  /* a symbol value is added */
 744 #define VT_MUSTCAST  0x0400  /* value must be casted to be correct (used for
 745                                 char/short stored in integer registers) */
 746 #define VT_MUSTBOUND 0x0800  /* bound checking must be done before
 747                                 dereferencing value */
 748 #define VT_BOUNDED   0x8000  /* value is bounded. The address of the
 749                                 bounding function call point is in vc */
 750 #define VT_LVAL_BYTE     0x1000  /* lvalue is a byte */
 751 #define VT_LVAL_SHORT    0x2000  /* lvalue is a short */
 752 #define VT_LVAL_UNSIGNED 0x4000  /* lvalue is unsigned */
 753 #define VT_LVAL_TYPE     (VT_LVAL_BYTE | VT_LVAL_SHORT | VT_LVAL_UNSIGNED)
 754
 755 /* types */
 756 #define VT_BTYPE       0x000f  /* mask for basic type */
 757 #define VT_INT              0  /* integer type */
 758 #define VT_BYTE             1  /* signed byte type */
 759 #define VT_SHORT            2  /* short type */
 760 #define VT_VOID             3  /* void type */
 761 #define VT_PTR              4  /* pointer */
 762 #define VT_ENUM             5  /* enum definition */
 763 #define VT_FUNC             6  /* function type */
 764 #define VT_STRUCT           7  /* struct/union definition */
 765 #define VT_FLOAT            8  /* IEEE float */
 766 #define VT_DOUBLE           9  /* IEEE double */
 767 #define VT_LDOUBLE         10  /* IEEE long double */
 768 #define VT_BOOL            11  /* ISOC99 boolean type */
 769 #define VT_LLONG           12  /* 64 bit integer */
 770 #define VT_LONG            13  /* long integer (NEVER USED as type, only
 771                                   during parsing) */
 772 #define VT_QLONG           14  /* 128-bit integer. Only used for x86-64 ABI */
 773 #define VT_QFLOAT          15  /* 128-bit float. Only used for x86-64 ABI */
 774 #define VT_UNSIGNED    0x0010  /* unsigned type */
 775 #define VT_ARRAY       0x0020  /* array type (also has VT_PTR) */
 776 #define VT_BITFIELD    0x0040  /* bitfield modifier */
 777 #define VT_CONSTANT    0x0800  /* const modifier */
 778 #define VT_VOLATILE    0x1000  /* volatile modifier */
 779 #define VT_DEFSIGN     0x2000  /* signed type */
 780 #define VT_VLA     0x00020000  /* VLA type (also has VT_PTR and VT_ARRAY) */
 781
 782 /* storage */
 783 #define VT_EXTERN  0x00000080  /* extern definition */
 784 #define VT_STATIC  0x00000100  /* static variable */
 785 #define VT_TYPEDEF 0x00000200  /* typedef definition */
 786 #define VT_INLINE  0x00000400  /* inline definition */
 787 #define VT_IMPORT  0x00004000  /* win32: extern data imported from dll */
 788 #define VT_EXPORT  0x00008000  /* win32: data exported from dll */
 789 #define VT_WEAK    0x00010000  /* weak symbol */
 790 #define VT_TLS     0x00040000  /* thread-local storage */
 791 #define VT_VIS_SHIFT    19     /* shift for symbol visibility, overlapping
 792                                   bitfield values, because bitfields never
 793                                   have linkage and hence never have
 794                                   visibility.  */
 795 #define VT_VIS_SIZE      2     /* We have four visibilities.  */
 796 #define VT_VIS_MASK (((1 << VT_VIS_SIZE)-1) << VT_VIS_SHIFT)
 797
 798 #define VT_STRUCT_SHIFT 19     /* shift for bitfield shift values (max: 32 - 2*6) */
 799
 800
 801 /* type mask (except storage) */
 802 #define VT_STORAGE (VT_EXTERN | VT_STATIC | VT_TYPEDEF | VT_INLINE | VT_IMPORT | VT_EXPORT | VT_WEAK | VT_VIS_MASK)
 803 #define VT_TYPE (~(VT_STORAGE))
 804
 805 /* token values */
 806
 807 /* warning: the following compare tokens depend on i386 asm code */
 808 #define TOK_ULT 0x92
 809 #define TOK_UGE 0x93
 810 #define TOK_EQ  0x94
 811 #define TOK_NE  0x95
 812 #define TOK_ULE 0x96
 813 #define TOK_UGT 0x97
 814 #define TOK_Nset 0x98
 815 #define TOK_Nclear 0x99
 816 #define TOK_LT  0x9c
 817 #define TOK_GE  0x9d
 818 #define TOK_LE  0x9e
 819 #define TOK_GT  0x9f
 820
 821 #define TOK_LAND  0xa0
 822 #define TOK_LOR   0xa1
 823 #define TOK_DEC   0xa2
 824 #define TOK_MID   0xa3 /* inc/dec, to void constant */
 825 #define TOK_INC   0xa4
 826 #define TOK_UDIV  0xb0 /* unsigned division */
 827 #define TOK_UMOD  0xb1 /* unsigned modulo */
 828 #define TOK_PDIV  0xb2 /* fast division with undefined rounding for pointers */
 829
 830 /* tokens that carry values (in additional token string space / tokc) --> */
 831 #define TOK_CCHAR   0xb3 /* char constant in tokc */
 832 #define TOK_LCHAR   0xb4
 833 #define TOK_CINT    0xb5 /* number in tokc */
 834 #define TOK_CUINT   0xb6 /* unsigned int constant */
 835 #define TOK_CLLONG  0xb7 /* long long constant */
 836 #define TOK_CULLONG 0xb8 /* unsigned long long constant */
 837 #define TOK_STR     0xb9 /* pointer to string in tokc */
 838 #define TOK_LSTR    0xba
 839 #define TOK_CFLOAT  0xbb /* float constant */
 840 #define TOK_CDOUBLE 0xbc /* double constant */
 841 #define TOK_CLDOUBLE 0xbd /* long double constant */
 842 #define TOK_PPNUM   0xbe /* preprocessor number */
 843 #define TOK_LINENUM 0xbf /* line number info */
 844 /* <-- */
 845
 846 #define TOK_TWOSHARPS 0xc0 /* ## preprocessing token */
 847 #define TOK_PLCHLDR  0xc1 /* placeholder token as defined in C99 */
 848 #define TOK_UMULL    0xc2 /* unsigned 32x32 -> 64 mul */
 849 #define TOK_ADDC1    0xc3 /* add with carry generation */
 850 #define TOK_ADDC2    0xc4 /* add with carry use */
 851 #define TOK_SUBC1    0xc5 /* add with carry generation */
 852 #define TOK_SUBC2    0xc6 /* add with carry use */
 853 #define TOK_ARROW    0xcb
 854 #define TOK_DOTS     0xcc /* three dots */
 855 #define TOK_SHR      0xcd /* unsigned shift right */
 856 #define TOK_NOSUBST  0xcf /* means following token has already been pp'd */
 857
 858 #define TOK_SHL   0x01 /* shift left */
 859 #define TOK_SAR   0x02 /* signed shift right */
 860
 861 /* assignement operators : normal operator or 0x80 */
 862 #define TOK_A_MOD 0xa5
 863 #define TOK_A_AND 0xa6
 864 #define TOK_A_MUL 0xaa
 865 #define TOK_A_ADD 0xab
 866 #define TOK_A_SUB 0xad
 867 #define TOK_A_DIV 0xaf
 868 #define TOK_A_XOR 0xde
 869 #define TOK_A_OR  0xfc
 870 #define TOK_A_SHL 0x81
 871 #define TOK_A_SAR 0x82
 872
 873 #ifndef offsetof
 874 #define offsetof(type, field) ((size_t) &((type *)0)->field)
 875 #endif
 876
 877 #ifndef countof
 878 #define countof(tab) (sizeof(tab) / sizeof((tab)[0]))
 879 #endif
 880
 881 #define TOK_EOF       (-1)  /* end of file */
 882 #define TOK_LINEFEED  10    /* line feed */
 883
 884 /* all identificators and strings have token above that */
 885 #define TOK_IDENT 256
 886
 887 #define DEF_ASM(x) DEF(TOK_ASM_ ## x, #x)
 888 #define TOK_ASM_int TOK_INT
 889 #define TOK_ASM_weak TOK_WEAK1
 890
 891 #if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64
 892 /* only used for i386 asm opcodes definitions */
 893 #define DEF_BWL(x) \
 894  DEF(TOK_ASM_ ## x ## b, #x "b") \
 895  DEF(TOK_ASM_ ## x ## w, #x "w") \
 896  DEF(TOK_ASM_ ## x ## l, #x "l") \
 897  DEF(TOK_ASM_ ## x, #x)
 898 #define DEF_WL(x) \
 899  DEF(TOK_ASM_ ## x ## w, #x "w") \
 900  DEF(TOK_ASM_ ## x ## l, #x "l") \
 901  DEF(TOK_ASM_ ## x, #x)
 902 #ifdef TCC_TARGET_X86_64
 903 # define DEF_BWLQ(x) \
 904  DEF(TOK_ASM_ ## x ## b, #x "b") \
 905  DEF(TOK_ASM_ ## x ## w, #x "w") \
 906  DEF(TOK_ASM_ ## x ## l, #x "l") \
 907  DEF(TOK_ASM_ ## x ## q, #x "q") \
 908  DEF(TOK_ASM_ ## x, #x)
 909 # define DEF_WLQ(x) \
 910  DEF(TOK_ASM_ ## x ## w, #x "w") \
 911  DEF(TOK_ASM_ ## x ## l, #x "l") \
 912  DEF(TOK_ASM_ ## x ## q, #x "q") \
 913  DEF(TOK_ASM_ ## x, #x)
 914 # define DEF_BWLX DEF_BWLQ
 915 # define DEF_WLX DEF_WLQ
 916 /* number of sizes + 1 */
 917 # define NBWLX 5
 918 #else
 919 # define DEF_BWLX DEF_BWL
 920 # define DEF_WLX DEF_WL
 921 /* number of sizes + 1 */
 922 # define NBWLX 4
 923 #endif
 924
 925 #define DEF_FP1(x) \
 926  DEF(TOK_ASM_ ## f ## x ## s, "f" #x "s") \
 927  DEF(TOK_ASM_ ## fi ## x ## l, "fi" #x "l") \
 928  DEF(TOK_ASM_ ## f ## x ## l, "f" #x "l") \
 929  DEF(TOK_ASM_ ## fi ## x ## s, "fi" #x "s")
 930
 931 #define DEF_FP(x) \
 932  DEF(TOK_ASM_ ## f ## x, "f" #x ) \
 933  DEF(TOK_ASM_ ## f ## x ## p, "f" #x "p") \
 934  DEF_FP1(x)
 935
 936 #define DEF_ASMTEST(x) \
 937  DEF_ASM(x ## o) \
 938  DEF_ASM(x ## no) \
 939  DEF_ASM(x ## b) \
 940  DEF_ASM(x ## c) \
 941  DEF_ASM(x ## nae) \
 942  DEF_ASM(x ## nb) \
 943  DEF_ASM(x ## nc) \
 944  DEF_ASM(x ## ae) \
 945  DEF_ASM(x ## e) \
 946  DEF_ASM(x ## z) \
 947  DEF_ASM(x ## ne) \
 948  DEF_ASM(x ## nz) \
 949  DEF_ASM(x ## be) \
 950  DEF_ASM(x ## na) \
 951  DEF_ASM(x ## nbe) \
 952  DEF_ASM(x ## a) \
 953  DEF_ASM(x ## s) \
 954  DEF_ASM(x ## ns) \
 955  DEF_ASM(x ## p) \
 956  DEF_ASM(x ## pe) \
 957  DEF_ASM(x ## np) \
 958  DEF_ASM(x ## po) \
 959  DEF_ASM(x ## l) \
 960  DEF_ASM(x ## nge) \
 961  DEF_ASM(x ## nl) \
 962  DEF_ASM(x ## ge) \
 963  DEF_ASM(x ## le) \
 964  DEF_ASM(x ## ng) \
 965  DEF_ASM(x ## nle) \
 966  DEF_ASM(x ## g)
 967
 968 #endif /* defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64 */
 969
 970 enum tcc_token {
 971     TOK_LAST = TOK_IDENT - 1,
 972 #define DEF(id, str) id,
 973 #include "tcctok.h"
 974 #undef DEF
 975 };
 976
 977 #define TOK_UIDENT TOK_DEFINE
 978
 979 /* space exlcuding newline */
 980 static inline int is_space(int ch)
 981 {
 982     return ch == ' ' || ch == '\t' || ch == '\v' || ch == '\f' || ch == '\r';
 983 }
 984
 985 static inline int isid(int c)
 986 {
 987     return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_';
 988 }
 989
 990 static inline int isnum(int c)
 991 {
 992     return c >= '0' && c <= '9';
 993 }
 994
 995 static inline int isoct(int c)
 996 {
 997     return c >= '0' && c <= '7';
 998 }
 999
1000 static inline int toup(int c)
1001 {
1002     return (c >= 'a' && c <= 'z') ? c - 'a' + 'A' : c;
1003 }
1004
1005 #ifndef PUB_FUNC
1006 # define PUB_FUNC
1007 #endif
1008
1009 #ifdef ONE_SOURCE
1010 #define ST_INLN static inline
1011 #define ST_FUNC static
1012 #define ST_DATA static
1013 #else
1014 #define ST_INLN
1015 #define ST_FUNC
1016 #define ST_DATA extern
1017 #endif
1018
1019 /* ------------ libtcc.c ------------ */
1020
1021 /* use GNU C extensions */
1022 ST_DATA int gnu_ext;
1023 /* use Tiny C extensions */
1024 ST_DATA int tcc_ext;
1025 /* XXX: get rid of this ASAP */
1026 ST_DATA struct TCCState *tcc_state;
1027
1028 #ifdef MEM_DEBUG
1029 ST_DATA int mem_cur_size;
1030 ST_DATA int mem_max_size;
1031 #endif
1032
1033 #define AFF_PRINT_ERROR     0x0001 /* print error if file not found */
1034 #define AFF_REFERENCED_DLL  0x0002 /* load a referenced dll from another dll */
1035 #define AFF_PREPROCESS      0x0004 /* preprocess file */
1036
1037 /* public functions currently used by the tcc main function */
1038 PUB_FUNC char *pstrcpy(char *buf, int buf_size, const char *s);
1039 PUB_FUNC char *pstrcat(char *buf, int buf_size, const char *s);
1040 PUB_FUNC char *pstrncpy(char *out, const char *in, size_t num);
1041 PUB_FUNC char *tcc_basename(const char *name);
1042 PUB_FUNC char *tcc_fileextension (const char *name);
1043 PUB_FUNC void tcc_free(void *ptr);
1044 PUB_FUNC void *tcc_malloc(unsigned long size);
1045 PUB_FUNC void *tcc_mallocz(unsigned long size);
1046 PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size);
1047 PUB_FUNC char *tcc_strdup(const char *str);
1048 #define free(p) use_tcc_free(p)
1049 #define malloc(s) use_tcc_malloc(s)
1050 #define realloc(p, s) use_tcc_realloc(p, s)
1051 #undef strdup
1052 #define strdup(s) use_tcc_strdup(s)
1053 PUB_FUNC void tcc_memstats(void);
1054 PUB_FUNC void tcc_error_noabort(const char *fmt, ...);
1055 PUB_FUNC NORETURN void tcc_error(const char *fmt, ...);
1056 PUB_FUNC void tcc_warning(const char *fmt, ...);
1057
1058 /* other utilities */
1059 ST_FUNC void dynarray_add(void ***ptab, int *nb_ptr, void *data);
1060 ST_FUNC void dynarray_reset(void *pp, int *n);
1061 ST_FUNC void cstr_ccat(CString *cstr, int ch);
1062 ST_FUNC void cstr_cat(CString *cstr, const char *str);
1063 ST_FUNC void cstr_wccat(CString *cstr, int ch);
1064 ST_FUNC void cstr_new(CString *cstr);
1065 ST_FUNC void cstr_free(CString *cstr);
1066 ST_FUNC void cstr_reset(CString *cstr);
1067
1068 ST_FUNC Section *new_section(TCCState *s1, const char *name, int sh_type, int sh_flags);
1069 ST_FUNC void section_realloc(Section *sec, unsigned long new_size);
1070 ST_FUNC void *section_ptr_add(Section *sec, unsigned long size);
1071 ST_FUNC void section_reserve(Section *sec, unsigned long size);
1072 ST_FUNC Section *find_section(TCCState *s1, const char *name);
1073
1074 ST_FUNC void put_extern_sym2(Sym *sym, Section *section, addr_t value, unsigned long size, int can_add_underscore);
1075 ST_FUNC void put_extern_sym(Sym *sym, Section *section, addr_t value, unsigned long size);
1076 ST_FUNC void greloc(Section *s, Sym *sym, unsigned long offset, int type);
1077
1078 ST_INLN void sym_free(Sym *sym);
1079 ST_FUNC Sym *sym_push2(Sym **ps, int v, int t, long c);
1080 ST_FUNC Sym *sym_find2(Sym *s, int v);
1081 ST_FUNC Sym *sym_push(int v, CType *type, int r, int c);
1082 ST_FUNC void sym_pop(Sym **ptop, Sym *b);
1083 ST_INLN Sym *struct_find(int v);
1084 ST_INLN Sym *sym_find(int v);
1085 ST_FUNC Sym *global_identifier_push(int v, int t, int c);
1086
1087 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen);
1088 ST_FUNC int tcc_open(TCCState *s1, const char *filename);
1089 ST_FUNC void tcc_close(void);
1090
1091 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags);
1092 ST_FUNC int tcc_add_crt(TCCState *s, const char *filename);
1093 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags);
1094
1095 PUB_FUNC void tcc_print_stats(TCCState *s, int64_t total_time);
1096 PUB_FUNC int tcc_parse_args(TCCState *s, int argc, char **argv);
1097
1098 PUB_FUNC void tcc_set_environment(TCCState *s);
1099
1100 /* ------------ tccpp.c ------------ */
1101
1102 ST_DATA struct BufferedFile *file;
1103 ST_DATA int ch, tok;
1104 ST_DATA CValue tokc;
1105 ST_DATA const int *macro_ptr;
1106 ST_DATA int parse_flags;
1107 ST_DATA int tok_flags;
1108 ST_DATA CString tokcstr; /* current parsed string, if any */
1109
1110 /* display benchmark infos */
1111 ST_DATA int total_lines;
1112 ST_DATA int total_bytes;
1113 ST_DATA int tok_ident;
1114 ST_DATA TokenSym **table_ident;
1115
1116 #define TOK_FLAG_BOL   0x0001 /* beginning of line before */
1117 #define TOK_FLAG_BOF   0x0002 /* beginning of file before */
1118 #define TOK_FLAG_ENDIF 0x0004 /* a endif was found matching starting #ifdef */
1119 #define TOK_FLAG_EOF   0x0008 /* end of file */
1120
1121 #define PARSE_FLAG_PREPROCESS 0x0001 /* activate preprocessing */
1122 #define PARSE_FLAG_TOK_NUM    0x0002 /* return numbers instead of TOK_PPNUM */
1123 #define PARSE_FLAG_LINEFEED   0x0004 /* line feed is returned as a
1124                                         token. line feed is also
1125                                         returned at eof */
1126 #define PARSE_FLAG_ASM_COMMENTS 0x0008 /* '#' can be used for line comment */
1127 #define PARSE_FLAG_SPACES     0x0010 /* next() returns space tokens (for -E) */
1128
1129 ST_FUNC TokenSym *tok_alloc(const char *str, int len);
1130 ST_FUNC char *get_tok_str(int v, CValue *cv);
1131 ST_FUNC void save_parse_state(ParseState *s);
1132 ST_FUNC void restore_parse_state(ParseState *s);
1133 ST_INLN void tok_str_new(TokenString *s);
1134 ST_FUNC void tok_str_free(int *str);
1135 ST_FUNC void tok_str_add(TokenString *s, int t);
1136 ST_FUNC void tok_str_add_tok(TokenString *s);
1137 ST_INLN void define_push(int v, int macro_type, int *str, Sym *first_arg);
1138 ST_FUNC void define_undef(Sym *s);
1139 ST_INLN Sym *define_find(int v);
1140 ST_FUNC void free_defines(Sym *b);
1141 ST_FUNC Sym *label_find(int v);
1142 ST_FUNC Sym *label_push(Sym **ptop, int v, int flags);
1143 ST_FUNC void label_pop(Sym **ptop, Sym *slast);
1144 ST_FUNC void parse_define(void);
1145 ST_FUNC void preprocess(int is_bof);
1146 ST_FUNC void next_nomacro(void);
1147 ST_FUNC void next(void);
1148 ST_INLN void unget_tok(int last_tok);
1149 ST_FUNC void preprocess_init(TCCState *s1);
1150 ST_FUNC void preprocess_new(void);
1151 ST_FUNC int tcc_preprocess(TCCState *s1);
1152 ST_FUNC void skip(int c);
1153 ST_FUNC NORETURN void expect(const char *msg);
1154
1155 /* ------------ tccgen.c ------------ */
1156
1157 ST_DATA Section *text_section, *data_section, *bss_section; /* predefined sections */
1158 ST_DATA Section *cur_text_section; /* current section where function code is generated */
1159 #ifdef CONFIG_TCC_ASM
1160 ST_DATA Section *last_text_section; /* to handle .previous asm directive */
1161 #endif
1162 #ifdef CONFIG_TCC_BCHECK
1163 /* bound check related sections */
1164 ST_DATA Section *bounds_section; /* contains global data bound description */
1165 ST_DATA Section *lbounds_section; /* contains local data bound description */
1166 #endif
1167 /* symbol sections */
1168 ST_DATA Section *symtab_section, *strtab_section;
1169 /* debug sections */
1170 ST_DATA Section *stab_section, *stabstr_section;
1171
1172 #define SYM_POOL_NB (8192 / sizeof(Sym))
1173 ST_DATA Sym *sym_free_first;
1174 ST_DATA void **sym_pools;
1175 ST_DATA int nb_sym_pools;
1176
1177 ST_DATA Sym *global_stack;
1178 ST_DATA Sym *local_stack;
1179 ST_DATA Sym *local_label_stack;
1180 ST_DATA Sym *global_label_stack;
1181 ST_DATA Sym *define_stack;
1182 ST_DATA CType char_pointer_type, func_old_type, int_type, size_type;
1183 ST_DATA SValue __vstack[1+/*to make bcheck happy*/ VSTACK_SIZE], *vtop;
1184 #define vstack  (__vstack + 1)
1185 ST_DATA int rsym, anon_sym, ind, loc;
1186
1187 ST_DATA int const_wanted; /* true if constant wanted */
1188 ST_DATA int nocode_wanted; /* true if no code generation wanted for an expression */
1189 ST_DATA int global_expr;  /* true if compound literals must be allocated globally (used during initializers parsing */
1190 ST_DATA CType func_vt; /* current function return type (used by return instruction) */
1191 ST_DATA int func_var; /* true if current function is variadic */
1192 ST_DATA int func_vc;
1193 ST_DATA int last_line_num, last_ind, func_ind; /* debug last line number and pc */
1194 ST_DATA char *funcname;
1195
1196 ST_INLN int is_float(int t);
1197 ST_FUNC int ieee_finite(double d);
1198 ST_FUNC void test_lvalue(void);
1199 ST_FUNC void swap(int *p, int *q);
1200 ST_FUNC void vpushi(int v);
1201 ST_FUNC Sym *external_global_sym(int v, CType *type, int r);
1202 ST_FUNC void vset(CType *type, int r, int v);
1203 ST_FUNC void vswap(void);
1204 ST_FUNC void vpush_global_sym(CType *type, int v);
1205 ST_FUNC void vrote(SValue *e, int n);
1206 ST_FUNC void vrott(int n);
1207 ST_FUNC void vrotb(int n);
1208 #ifdef TCC_TARGET_ARM
1209 ST_FUNC int get_reg_ex(int rc, int rc2);
1210 ST_FUNC void lexpand_nr(void);
1211 #endif
1212 ST_FUNC void vpushv(SValue *v);
1213 ST_FUNC void save_reg(int r);
1214 ST_FUNC int get_reg(int rc);
1215 ST_FUNC void save_regs(int n);
1216 ST_FUNC int gv(int rc);
1217 ST_FUNC void gv2(int rc1, int rc2);
1218 ST_FUNC void vpop(void);
1219 ST_FUNC void gen_op(int op);
1220 ST_FUNC int type_size(CType *type, int *a);
1221 ST_FUNC void mk_pointer(CType *type);
1222 ST_FUNC void vstore(void);
1223 ST_FUNC void inc(int post, int c);
1224 ST_FUNC void parse_asm_str(CString *astr);
1225 ST_FUNC int lvalue_type(int t);
1226 ST_FUNC void indir(void);
1227 ST_FUNC void unary(void);
1228 ST_FUNC void expr_prod(void);
1229 ST_FUNC void expr_sum(void);
1230 ST_FUNC void gexpr(void);
1231 ST_FUNC int expr_const(void);
1232 ST_FUNC void gen_inline_functions(void);
1233 ST_FUNC void decl(int l);
1234 #if defined CONFIG_TCC_BCHECK || defined TCC_TARGET_C67
1235 ST_FUNC Sym *get_sym_ref(CType *type, Section *sec, unsigned long offset, unsigned long size);
1236 #endif
1237 #if defined TCC_TARGET_X86_64 && !defined TCC_TARGET_PE
1238 ST_FUNC int classify_x86_64_va_arg(CType *ty);
1239 #endif
1240
1241 /* ------------ tccelf.c ------------ */
1242
1243 #define TCC_OUTPUT_FORMAT_ELF    0 /* default output format: ELF */
1244 #define TCC_OUTPUT_FORMAT_BINARY 1 /* binary image output */
1245 #define TCC_OUTPUT_FORMAT_COFF   2 /* COFF */
1246
1247 #define ARMAG  "!<arch>\012"    /* For COFF and a.out archives */
1248
1249 typedef struct {
1250     unsigned int n_strx;         /* index into string table of name */
1251     unsigned char n_type;         /* type of symbol */
1252     unsigned char n_other;        /* misc info (usually empty) */
1253     unsigned short n_desc;        /* description field */
1254     unsigned int n_value;        /* value of symbol */
1255 } Stab_Sym;
1256
1257 ST_FUNC Section *new_symtab(TCCState *s1, const char *symtab_name, int sh_type, int sh_flags, const char *strtab_name, const char *hash_name, int hash_sh_flags);
1258
1259 ST_FUNC int put_elf_str(Section *s, const char *sym);
1260 ST_FUNC int put_elf_sym(Section *s, addr_t value, unsigned long size, int info, int other, int shndx, const char *name);
1261 ST_FUNC int add_elf_sym(Section *s, addr_t value, unsigned long size, int info, int other, int sh_num, const char *name);
1262 ST_FUNC int find_elf_sym(Section *s, const char *name);
1263 ST_FUNC void put_elf_reloc(Section *symtab, Section *s, unsigned long offset, int type, int symbol);
1264
1265 ST_FUNC void put_stabs(const char *str, int type, int other, int desc, unsigned long value);
1266 ST_FUNC void put_stabs_r(const char *str, int type, int other, int desc, unsigned long value, Section *sec, int sym_index);
1267 ST_FUNC void put_stabn(int type, int other, int desc, int value);
1268 ST_FUNC void put_stabd(int type, int other, int desc);
1269
1270 ST_FUNC void relocate_common_syms(void);
1271 ST_FUNC void relocate_syms(TCCState *s1, int do_resolve);
1272 ST_FUNC void relocate_section(TCCState *s1, Section *s);
1273 ST_FUNC void relocate_plt(TCCState *s1);
1274
1275 ST_FUNC void tcc_add_linker_symbols(TCCState *s1);
1276 ST_FUNC int tcc_load_object_file(TCCState *s1, int fd, unsigned long file_offset);
1277 ST_FUNC int tcc_load_archive(TCCState *s1, int fd);
1278 ST_FUNC void tcc_add_bcheck(TCCState *s1);
1279
1280 ST_FUNC void build_got_entries(TCCState *s1);
1281 ST_FUNC void tcc_add_runtime(TCCState *s1);
1282
1283 ST_FUNC addr_t get_elf_sym_addr(TCCState *s, const char *name, int err);
1284 #if defined TCC_IS_NATIVE || defined TCC_TARGET_PE
1285 ST_FUNC void *tcc_get_symbol_err(TCCState *s, const char *name);
1286 #endif
1287
1288 #ifndef TCC_TARGET_PE
1289 ST_FUNC int tcc_load_dll(TCCState *s1, int fd, const char *filename, int level);
1290 ST_FUNC int tcc_load_ldscript(TCCState *s1);
1291 ST_FUNC uint8_t *parse_comment(uint8_t *p);
1292 ST_FUNC void minp(void);
1293 ST_INLN void inp(void);
1294 ST_FUNC int handle_eob(void);
1295 #endif
1296
1297 /* ------------ xxx-gen.c ------------ */
1298
1299 ST_DATA const int reg_classes[NB_REGS];
1300
1301 ST_FUNC void gsym_addr(int t, int a);
1302 ST_FUNC void gsym(int t);
1303 ST_FUNC void load(int r, SValue *sv);
1304 ST_FUNC void store(int r, SValue *v);
1305 ST_FUNC int gfunc_sret(CType *vt, int variadic, CType *ret, int *align);
1306 ST_FUNC void gfunc_call(int nb_args);
1307 ST_FUNC void gfunc_prolog(CType *func_type);
1308 ST_FUNC void gfunc_epilog(void);
1309 ST_FUNC int gjmp(int t);
1310 ST_FUNC void gjmp_addr(int a);
1311 ST_FUNC int gtst(int inv, int t);
1312 ST_FUNC void gen_opi(int op);
1313 ST_FUNC void gen_opf(int op);
1314 ST_FUNC void gen_cvt_ftoi(int t);
1315 ST_FUNC void gen_cvt_ftof(int t);
1316 ST_FUNC void ggoto(void);
1317 #ifndef TCC_TARGET_C67
1318 ST_FUNC void o(unsigned int c);
1319 #endif
1320 #ifndef TCC_TARGET_ARM
1321 ST_FUNC void gen_cvt_itof(int t);
1322 #endif
1323 ST_FUNC void gen_vla_sp_save(int addr);
1324 ST_FUNC void gen_vla_sp_restore(int addr);
1325 ST_FUNC void gen_vla_alloc(CType *type, int align);
1326
1327 /* ------------ i386-gen.c ------------ */
1328 #if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64
1329 ST_FUNC void g(int c);
1330 ST_FUNC int oad(int c, int s);
1331 ST_FUNC void gen_le16(int c);
1332 ST_FUNC void gen_le32(int c);
1333 ST_FUNC void gen_addr32(int r, Sym *sym, int c);
1334 ST_FUNC void gen_addrpc32(int r, Sym *sym, int c);
1335 #endif
1336
1337 #ifdef CONFIG_TCC_BCHECK
1338 ST_FUNC void gen_bounded_ptr_add(void);
1339 ST_FUNC void gen_bounded_ptr_deref(void);
1340 #endif
1341
1342 /* ------------ x86_64-gen.c ------------ */
1343 #ifdef TCC_TARGET_X86_64
1344 ST_FUNC void gen_addr64(int r, Sym *sym, int64_t c);
1345 ST_FUNC void gen_opl(int op);
1346 #endif
1347
1348 /* ------------ arm-gen.c ------------ */
1349 #ifdef TCC_TARGET_ARM
1350 #ifdef TCC_ARM_EABI
1351 ST_FUNC char *default_elfinterp(struct TCCState *s);
1352 #endif
1353 ST_FUNC void arm_init(struct TCCState *s);
1354 ST_FUNC uint32_t encbranch(int pos, int addr, int fail);
1355 ST_FUNC void gen_cvt_itof1(int t);
1356 #endif
1357
1358 /* ------------ c67-gen.c ------------ */
1359 #ifdef TCC_TARGET_C67
1360 #endif
1361
1362 /* ------------ tcccoff.c ------------ */
1363
1364 #ifdef TCC_TARGET_COFF
1365 ST_FUNC int tcc_output_coff(TCCState *s1, FILE *f);
1366 ST_FUNC int tcc_load_coff(TCCState * s1, int fd);
1367 #endif
1368
1369 /* ------------ tccasm.c ------------ */
1370 ST_FUNC void asm_instr(void);
1371 ST_FUNC void asm_global_instr(void);
1372 #ifdef CONFIG_TCC_ASM
1373 ST_FUNC int find_constraint(ASMOperand *operands, int nb_operands, const char *name, const char **pp);
1374 ST_FUNC void asm_expr(TCCState *s1, ExprValue *pe);
1375 ST_FUNC int asm_int_expr(TCCState *s1);
1376 ST_FUNC int tcc_assemble(TCCState *s1, int do_preprocess);
1377 /* ------------ i386-asm.c ------------ */
1378 ST_FUNC void gen_expr32(ExprValue *pe);
1379 ST_FUNC void asm_opcode(TCCState *s1, int opcode);
1380 ST_FUNC void asm_compute_constraints(ASMOperand *operands, int nb_operands, int nb_outputs, const uint8_t *clobber_regs, int *pout_reg);
1381 ST_FUNC void subst_asm_operand(CString *add_str, SValue *sv, int modifier);
1382 ST_FUNC void asm_gen_code(ASMOperand *operands, int nb_operands, int nb_outputs, int is_output, uint8_t *clobber_regs, int out_reg);
1383 ST_FUNC void asm_clobber(uint8_t *clobber_regs, const char *str);
1384 #endif
1385
1386 /* ------------ tccpe.c -------------- */
1387 #ifdef TCC_TARGET_PE
1388 ST_FUNC int pe_load_file(struct TCCState *s1, const char *filename, int fd);
1389 ST_FUNC int pe_output_file(TCCState * s1, const char *filename);
1390 ST_FUNC int pe_putimport(TCCState *s1, int dllindex, const char *name, addr_t value);
1391 ST_FUNC SValue *pe_getimport(SValue *sv, SValue *v2);
1392 #ifdef TCC_TARGET_X86_64
1393 ST_FUNC void pe_add_unwind_data(unsigned start, unsigned end, unsigned stack);
1394 #endif
1395 /* symbol properties stored in Elf32_Sym->st_other */
1396 # define ST_PE_EXPORT 0x10
1397 # define ST_PE_IMPORT 0x20
1398 # define ST_PE_STDCALL 0x40
1399 #endif
1400
1401 /* ------------ tccrun.c ----------------- */
1402 #ifdef TCC_IS_NATIVE
1403 #ifdef CONFIG_TCC_STATIC
1404 #define RTLD_LAZY       0x001
1405 #define RTLD_NOW        0x002
1406 #define RTLD_GLOBAL     0x100
1407 #define RTLD_DEFAULT    NULL
1408 /* dummy function for profiling */
1409 ST_FUNC void *dlopen(const char *filename, int flag);
1410 ST_FUNC void dlclose(void *p);
1411 ST_FUNC const char *dlerror(void);
1412 ST_FUNC void *resolve_sym(TCCState *s1, const char *symbol);
1413 #elif !defined _WIN32
1414 ST_FUNC void *resolve_sym(TCCState *s1, const char *symbol);
1415 #endif
1416
1417 #ifdef CONFIG_TCC_BACKTRACE
1418 ST_DATA int rt_num_callers;
1419 ST_DATA const char **rt_bound_error_msg;
1420 ST_DATA void *rt_prog_main;
1421 ST_FUNC void tcc_set_num_callers(int n);
1422 #endif
1423 #endif
1424
1425 /********************************************************/
1426 #undef ST_DATA
1427 #ifdef ONE_SOURCE
1428 #define ST_DATA static
1429 #else
1430 #define ST_DATA
1431 #endif
1432 /********************************************************/
1433 #endif /* _TCC_H */