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 #define _DARWIN_C_SOURCE
  26 #include "config.h"
  27
  28 #include <stdarg.h>
  29 #include <stdlib.h>
  30 #include <stdio.h>
  31 /* gnu headers use to #define __attribute__ to empty for non-gcc compilers */
  32 #ifdef __TINYC__
  33 # undef __attribute__
  34 #endif
  35 #include <string.h>
  36 #include <errno.h>
  37 #include <math.h>
  38 #include <fcntl.h>
  39 #include <setjmp.h>
  40 #include <time.h>
  41
  42 #ifndef _WIN32
  43 # include <unistd.h>
  44 # include <sys/time.h>
  45 # ifndef CONFIG_TCC_STATIC
  46 #  include <dlfcn.h>
  47 # endif
  48 /* XXX: need to define this to use them in non ISOC99 context */
  49 extern float strtof (const char *__nptr, char **__endptr);
  50 extern long double strtold (const char *__nptr, char **__endptr);
  51 #endif
  52
  53 #ifdef _WIN32
  54 # define WIN32_LEAN_AND_MEAN 1
  55 # include <windows.h>
  56 # include <io.h> /* open, close etc. */
  57 # include <direct.h> /* getcwd */
  58 # ifdef __GNUC__
  59 #  include <stdint.h>
  60 # endif
  61 # define inline __inline
  62 # define snprintf _snprintf
  63 # define vsnprintf _vsnprintf
  64 # ifndef __GNUC__
  65 #  define strtold (long double)strtod
  66 #  define strtof (float)strtod
  67 #  ifdef _WIN64
  68 #   define strtoll _strtoi64
  69 #   define strtoull _strtoui64
  70 #  else
  71 #   define strtoll strtol
  72 #   define strtoull strtoul
  73 #  endif
  74 # endif
  75 # ifdef LIBTCC_AS_DLL
  76 #  define LIBTCCAPI __declspec(dllexport)
  77 #  define PUB_FUNC LIBTCCAPI
  78 # endif
  79 # define inp next_inp /* inp is an intrinsic on msvc/mingw */
  80 # ifdef _MSC_VER
  81 #  pragma warning (disable : 4244)  // conversion from 'uint64_t' to 'int', possible loss of data
  82 #  pragma warning (disable : 4267)  // conversion from 'size_t' to 'int', possible loss of data
  83 #  pragma warning (disable : 4996)  // The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name
  84 #  pragma warning (disable : 4018)  // signed/unsigned mismatch
  85 #  pragma warning (disable : 4146)  // unary minus operator applied to unsigned type, result still unsigned
  86 #  define ssize_t intptr_t
  87 #  ifdef _X86_
  88 #   define __i386__ 1
  89 #  endif
  90 #  ifdef _AMD64_
  91 #   define __x86_64__ 1
  92 #  endif
  93 # endif
  94 # undef CONFIG_TCC_STATIC
  95 #endif
  96
  97 #ifndef PAGESIZE
  98 # ifdef _SC_PAGESIZE
  99 #   define PAGESIZE sysconf(_SC_PAGESIZE)
 100 # else
 101 #   define PAGESIZE 4096
 102 # endif
 103 #endif
 104
 105 #ifndef O_BINARY
 106 # define O_BINARY 0
 107 #endif
 108
 109 #ifndef offsetof
 110 #define offsetof(type, field) ((size_t) &((type *)0)->field)
 111 #endif
 112
 113 #ifndef countof
 114 #define countof(tab) (sizeof(tab) / sizeof((tab)[0]))
 115 #endif
 116
 117 #ifdef _MSC_VER
 118 # define NORETURN __declspec(noreturn)
 119 # define ALIGNED(x) __declspec(align(x))
 120 # define PRINTF_LIKE(x,y)
 121 #else
 122 # define NORETURN __attribute__((noreturn))
 123 # define ALIGNED(x) __attribute__((aligned(x)))
 124 # define PRINTF_LIKE(x,y) __attribute__ ((format (printf, (x), (y))))
 125 #endif
 126
 127
 128 #ifdef _WIN32
 129 # define IS_DIRSEP(c) (c == '/' || c == '\\')
 130 # define IS_ABSPATH(p) (IS_DIRSEP(p[0]) || (p[0] && p[1] == ':' && IS_DIRSEP(p[2])))
 131 # define PATHCMP stricmp
 132 # define PATHSEP ";"
 133 #else
 134 # define IS_DIRSEP(c) (c == '/')
 135 # define IS_ABSPATH(p) IS_DIRSEP(p[0])
 136 # define PATHCMP strcmp
 137 # define PATHSEP ":"
 138 #endif
 139
 140 /* -------------------------------------------- */
 141
 142 /* parser debug */
 143 /* #define PARSE_DEBUG */
 144 /* preprocessor debug */
 145 /* #define PP_DEBUG */
 146 /* include file debug */
 147 /* #define INC_DEBUG */
 148 /* memory leak debug (only for single threaded usage) */
 149 /* #define MEM_DEBUG */
 150 /* assembler debug */
 151 /* #define ASM_DEBUG */
 152
 153 /* target selection */
 154 /* #define TCC_TARGET_I386   *//* i386 code generator */
 155 /* #define TCC_TARGET_X86_64 *//* x86-64 code generator */
 156 /* #define TCC_TARGET_ARM    *//* ARMv4 code generator */
 157 /* #define TCC_TARGET_ARM64  *//* ARMv8 code generator */
 158 /* #define TCC_TARGET_C67    *//* TMS320C67xx code generator */
 159 /* #define TCC_TARGET_RISCV64 *//* risc-v code generator */
 160
 161 /* default target is I386 */
 162 #if !defined(TCC_TARGET_I386) && !defined(TCC_TARGET_ARM) && \
 163     !defined(TCC_TARGET_ARM64) && !defined(TCC_TARGET_C67) && \
 164     !defined(TCC_TARGET_X86_64) && !defined(TCC_TARGET_RISCV64)
 165 # if defined __x86_64__
 166 #  define TCC_TARGET_X86_64
 167 # elif defined __arm__
 168 #  define TCC_TARGET_ARM
 169 #  define TCC_ARM_EABI
 170 #  define TCC_ARM_VFP
 171 #  define TCC_ARM_HARDFLOAT
 172 # elif defined __aarch64__
 173 #  define TCC_TARGET_ARM64
 174 # elif defined __riscv
 175 #  define TCC_TARGET_RISCV64
 176 # else
 177 #  define TCC_TARGET_I386
 178 # endif
 179 # ifdef _WIN32
 180 #  define TCC_TARGET_PE 1
 181 # endif
 182 #endif
 183
 184 /* only native compiler supports -run */
 185 #if defined _WIN32 == defined TCC_TARGET_PE
 186 # if defined __i386__ && defined TCC_TARGET_I386
 187 #  define TCC_IS_NATIVE
 188 # elif defined __x86_64__ && defined TCC_TARGET_X86_64
 189 #  define TCC_IS_NATIVE
 190 # elif defined __arm__ && defined TCC_TARGET_ARM
 191 #  define TCC_IS_NATIVE
 192 # elif defined __aarch64__ && defined TCC_TARGET_ARM64
 193 #  define TCC_IS_NATIVE
 194 # elif defined __riscv && defined __LP64__ && defined TCC_TARGET_RISCV64
 195 #  define TCC_IS_NATIVE
 196 # endif
 197 #endif
 198
 199 #if !defined TCC_IS_NATIVE \
 200     || (defined CONFIG_TCC_BACKTRACE && CONFIG_TCC_BACKTRACE==0)
 201 # undef CONFIG_TCC_BACKTRACE
 202 #else
 203 # define CONFIG_TCC_BACKTRACE 1 /* enable builtin stack backtraces */
 204 #endif
 205
 206 #if defined CONFIG_TCC_BCHECK && CONFIG_TCC_BCHECK==0
 207 #  undef CONFIG_TCC_BCHECK
 208 #else
 209 #  define CONFIG_TCC_BCHECK 1 /* enable bound checking code */
 210 #endif
 211
 212 #if defined TARGETOS_OpenBSD \
 213     || defined TARGETOS_FreeBSD \
 214     || defined TARGETOS_NetBSD \
 215     || defined TARGETOS_FreeBSD_kernel
 216 # define TARGETOS_BSD 1
 217 #elif !(defined TCC_TARGET_PE || defined TCC_TARGET_MACHO)
 218 # define TARGETOS_Linux 1
 219 #endif
 220
 221 #if defined TCC_TARGET_PE || defined TCC_TARGET_MACHO
 222 # define ELF_OBJ_ONLY /* create elf .o but native executables */
 223 #endif
 224
 225 /* No ten-byte long doubles on window except in cross-compilers made by GCC */
 226 #if defined TCC_TARGET_PE || (defined _WIN32 && !defined __GNUC__)
 227 # define TCC_USING_DOUBLE_FOR_LDOUBLE 1
 228 #endif
 229
 230 /* ------------ path configuration ------------ */
 231
 232 #ifndef CONFIG_SYSROOT
 233 # define CONFIG_SYSROOT ""
 234 #endif
 235 #ifndef CONFIG_TCCDIR
 236 # define CONFIG_TCCDIR "/usr/local/lib/tcc"
 237 #endif
 238 #ifndef CONFIG_LDDIR
 239 # define CONFIG_LDDIR "lib"
 240 #endif
 241 #ifdef CONFIG_TRIPLET
 242 # define USE_TRIPLET(s) s "/" CONFIG_TRIPLET
 243 # define ALSO_TRIPLET(s) USE_TRIPLET(s) ":" s
 244 #else
 245 # define USE_TRIPLET(s) s
 246 # define ALSO_TRIPLET(s) s
 247 #endif
 248
 249 /* path to find crt1.o, crti.o and crtn.o */
 250 #ifndef CONFIG_TCC_CRTPREFIX
 251 # define CONFIG_TCC_CRTPREFIX USE_TRIPLET(CONFIG_SYSROOT "/usr/" CONFIG_LDDIR)
 252 #endif
 253
 254 #ifndef CONFIG_USR_INCLUDE
 255 # define CONFIG_USR_INCLUDE "/usr/include"
 256 #endif
 257
 258 /* Below: {B} is substituted by CONFIG_TCCDIR (rsp. -B option) */
 259
 260 /* system include paths */
 261 #ifndef CONFIG_TCC_SYSINCLUDEPATHS
 262 # if defined TCC_TARGET_PE || defined _WIN32
 263 #  define CONFIG_TCC_SYSINCLUDEPATHS "{B}/include"PATHSEP"{B}/include/winapi"
 264 # else
 265 #  define CONFIG_TCC_SYSINCLUDEPATHS \
 266         "{B}/include" \
 267     ":" ALSO_TRIPLET(CONFIG_SYSROOT "/usr/local/include") \
 268     ":" ALSO_TRIPLET(CONFIG_SYSROOT CONFIG_USR_INCLUDE)
 269 # endif
 270 #endif
 271
 272 /* library search paths */
 273 #ifndef CONFIG_TCC_LIBPATHS
 274 # ifdef TCC_TARGET_PE
 275 #  define CONFIG_TCC_LIBPATHS "{B}/lib"
 276 # else
 277 #  define CONFIG_TCC_LIBPATHS \
 278         ALSO_TRIPLET(CONFIG_SYSROOT "/usr/" CONFIG_LDDIR) \
 279     ":" ALSO_TRIPLET(CONFIG_SYSROOT "/" CONFIG_LDDIR) \
 280     ":" ALSO_TRIPLET(CONFIG_SYSROOT "/usr/local/" CONFIG_LDDIR)
 281 # endif
 282 #endif
 283
 284 /* name of ELF interpreter */
 285 #ifndef CONFIG_TCC_ELFINTERP
 286 # if TARGETOS_FreeBSD
 287 #  define CONFIG_TCC_ELFINTERP "/libexec/ld-elf.so.1"
 288 # elif TARGETOS_FreeBSD_kernel
 289 #  if defined(TCC_TARGET_X86_64)
 290 #   define CONFIG_TCC_ELFINTERP "/lib/ld-kfreebsd-x86-64.so.1"
 291 #  else
 292 #   define CONFIG_TCC_ELFINTERP "/lib/ld.so.1"
 293 #  endif
 294 # elif TARGETOS_DragonFly
 295 #  define CONFIG_TCC_ELFINTERP "/usr/libexec/ld-elf.so.2"
 296 # elif TARGETOS_NetBSD
 297 #  define CONFIG_TCC_ELFINTERP "/usr/libexec/ld.elf_so"
 298 # elif TARGETOS_OpenBSD
 299 #  define CONFIG_TCC_ELFINTERP "/usr/libexec/ld.so"
 300 # elif defined __GNU__
 301 #  define CONFIG_TCC_ELFINTERP "/lib/ld.so"
 302 # elif defined(TCC_TARGET_PE)
 303 #  define CONFIG_TCC_ELFINTERP "-"
 304 # elif defined(TCC_UCLIBC)
 305 #  define CONFIG_TCC_ELFINTERP "/lib/ld-uClibc.so.0" /* is there a uClibc for x86_64 ? */
 306 # elif defined TCC_TARGET_ARM64
 307 #  if defined(TCC_MUSL)
 308 #   define CONFIG_TCC_ELFINTERP "/lib/ld-musl-aarch64.so.1"
 309 #  else
 310 #   define CONFIG_TCC_ELFINTERP "/lib/ld-linux-aarch64.so.1"
 311 #  endif
 312 # elif defined(TCC_TARGET_X86_64)
 313 #  if defined(TCC_MUSL)
 314 #   define CONFIG_TCC_ELFINTERP "/lib/ld-musl-x86_64.so.1"
 315 #  else
 316 #   define CONFIG_TCC_ELFINTERP "/lib64/ld-linux-x86-64.so.2"
 317 #  endif
 318 # elif defined(TCC_TARGET_RISCV64)
 319 #  define CONFIG_TCC_ELFINTERP "/lib/ld-linux-riscv64-lp64d.so.1"
 320 # elif !defined(TCC_ARM_EABI)
 321 #  if defined(TCC_MUSL)
 322 #   if defined(TCC_TARGET_I386)
 323 #     define CONFIG_TCC_ELFINTERP "/lib/ld-musl-i386.so.1"
 324 #    else
 325 #     define CONFIG_TCC_ELFINTERP "/lib/ld-musl-arm.so.1"
 326 #    endif
 327 #  else
 328 #   define CONFIG_TCC_ELFINTERP "/lib/ld-linux.so.2"
 329 #  endif
 330 # endif
 331 #endif
 332
 333 /* var elf_interp dans *-gen.c */
 334 #ifdef CONFIG_TCC_ELFINTERP
 335 # define DEFAULT_ELFINTERP(s) CONFIG_TCC_ELFINTERP
 336 #else
 337 # define DEFAULT_ELFINTERP(s) default_elfinterp(s)
 338 #endif
 339
 340 /* (target specific) libtcc1.a */
 341 #ifndef TCC_LIBTCC1
 342 # define TCC_LIBTCC1 "libtcc1.a"
 343 #endif
 344
 345 /* library to use with CONFIG_USE_LIBGCC instead of libtcc1.a */
 346 #if defined CONFIG_USE_LIBGCC && !defined TCC_LIBGCC
 347 #define TCC_LIBGCC USE_TRIPLET(CONFIG_SYSROOT "/" CONFIG_LDDIR) "/libgcc_s.so.1"
 348 #endif
 349
 350 /* -------------------------------------------- */
 351
 352 #include "libtcc.h"
 353 #include "elf.h"
 354 #include "stab.h"
 355
 356 /* -------------------------------------------- */
 357
 358 #ifndef PUB_FUNC /* functions used by tcc.c but not in libtcc.h */
 359 # define PUB_FUNC
 360 #endif
 361
 362 #ifndef ONE_SOURCE
 363 # define ONE_SOURCE 1
 364 #endif
 365
 366 /* support using libtcc from threads */
 367 #ifndef CONFIG_TCC_SEMLOCK
 368 # define CONFIG_TCC_SEMLOCK 1
 369 #endif
 370
 371 #if ONE_SOURCE
 372 #define ST_INLN static inline
 373 #define ST_FUNC static
 374 #define ST_DATA static
 375 #else
 376 #define ST_INLN
 377 #define ST_FUNC
 378 #define ST_DATA extern
 379 #endif
 380
 381 #ifdef TCC_PROFILE /* profile all functions */
 382 # define static
 383 #endif
 384
 385 /* -------------------------------------------- */
 386 /* include the target specific definitions */
 387
 388 #define TARGET_DEFS_ONLY
 389 #ifdef TCC_TARGET_I386
 390 # include "i386-gen.c"
 391 # include "i386-link.c"
 392 #elif defined TCC_TARGET_X86_64
 393 # include "x86_64-gen.c"
 394 # include "x86_64-link.c"
 395 #elif defined TCC_TARGET_ARM
 396 # include "arm-gen.c"
 397 # include "arm-link.c"
 398 # include "arm-asm.c"
 399 #elif defined TCC_TARGET_ARM64
 400 # include "arm64-gen.c"
 401 # include "arm64-link.c"
 402 # include "arm-asm.c"
 403 #elif defined TCC_TARGET_C67
 404 # define TCC_TARGET_COFF
 405 # include "coff.h"
 406 # include "c67-gen.c"
 407 # include "c67-link.c"
 408 #elif defined(TCC_TARGET_RISCV64)
 409 # include "riscv64-gen.c"
 410 # include "riscv64-link.c"
 411 # include "riscv64-asm.c"
 412 #else
 413 #error unknown target
 414 #endif
 415 #undef TARGET_DEFS_ONLY
 416
 417 /* -------------------------------------------- */
 418
 419 #if PTR_SIZE == 8
 420 # define ELFCLASSW ELFCLASS64
 421 # define ElfW(type) Elf##64##_##type
 422 # define ELFW(type) ELF##64##_##type
 423 # define ElfW_Rel ElfW(Rela)
 424 # define SHT_RELX SHT_RELA
 425 # define REL_SECTION_FMT ".rela%s"
 426 #else
 427 # define ELFCLASSW ELFCLASS32
 428 # define ElfW(type) Elf##32##_##type
 429 # define ELFW(type) ELF##32##_##type
 430 # define ElfW_Rel ElfW(Rel)
 431 # define SHT_RELX SHT_REL
 432 # define REL_SECTION_FMT ".rel%s"
 433 #endif
 434 /* target address type */
 435 #define addr_t ElfW(Addr)
 436 #define ElfSym ElfW(Sym)
 437
 438 #if PTR_SIZE == 8 && !defined TCC_TARGET_PE
 439 # define LONG_SIZE 8
 440 #else
 441 # define LONG_SIZE 4
 442 #endif
 443
 444 /* -------------------------------------------- */
 445
 446 #define INCLUDE_STACK_SIZE  32
 447 #define IFDEF_STACK_SIZE    64
 448 #define VSTACK_SIZE         256
 449 #define STRING_MAX_SIZE     1024
 450 #define TOKSTR_MAX_SIZE     256
 451 #define PACK_STACK_SIZE     8
 452
 453 #define TOK_HASH_SIZE       16384 /* must be a power of two */
 454 #define TOK_ALLOC_INCR      512  /* must be a power of two */
 455 #define TOK_MAX_SIZE        4 /* token max size in int unit when stored in string */
 456
 457 /* token symbol management */
 458 typedef struct TokenSym {
 459     struct TokenSym *hash_next;
 460     struct Sym *sym_define; /* direct pointer to define */
 461     struct Sym *sym_label; /* direct pointer to label */
 462     struct Sym *sym_struct; /* direct pointer to structure */
 463     struct Sym *sym_identifier; /* direct pointer to identifier */
 464     int tok; /* token number */
 465     int len;
 466     char str[1];
 467 } TokenSym;
 468
 469 #ifdef TCC_TARGET_PE
 470 typedef unsigned short nwchar_t;
 471 #else
 472 typedef int nwchar_t;
 473 #endif
 474
 475 typedef struct CString {
 476     int size; /* size in bytes */
 477     void *data; /* either 'char *' or 'nwchar_t *' */
 478     int size_allocated;
 479 } CString;
 480
 481 /* type definition */
 482 typedef struct CType {
 483     int t;
 484     struct Sym *ref;
 485 } CType;
 486
 487 /* constant value */
 488 typedef union CValue {
 489     long double ld;
 490     double d;
 491     float f;
 492     uint64_t i;
 493     struct {
 494         const void *data;
 495         int size;
 496     } str;
 497     int tab[LDOUBLE_SIZE/4];
 498 } CValue;
 499
 500 /* value on stack */
 501 typedef struct SValue {
 502     CType type;      /* type */
 503     unsigned short r;      /* register + flags */
 504     unsigned short r2;     /* second register, used for 'long long'
 505                               type. If not used, set to VT_CONST */
 506     union {
 507       struct { int jtrue, jfalse; }; /* forward jmps */
 508       CValue c;         /* constant, if VT_CONST */
 509     };
 510     union {
 511       struct { unsigned short cmp_op, cmp_r; }; /* VT_CMP operation */
 512       struct Sym *sym;  /* symbol, if (VT_SYM | VT_CONST), or if */
 513     };                  /* result of unary() for an identifier. */
 514
 515 } SValue;
 516
 517 /* symbol attributes */
 518 struct SymAttr {
 519     unsigned short
 520     aligned     : 5, /* alignment as log2+1 (0 == unspecified) */
 521     packed      : 1,
 522     weak        : 1,
 523     visibility  : 2,
 524     dllexport   : 1,
 525     nodecorate  : 1,
 526     dllimport   : 1,
 527     addrtaken   : 1,
 528     xxxx        : 3; /* not used */
 529 };
 530
 531 /* function attributes or temporary attributes for parsing */
 532 struct FuncAttr {
 533     unsigned
 534     func_call   : 3, /* calling convention (0..5), see below */
 535     func_type   : 2, /* FUNC_OLD/NEW/ELLIPSIS */
 536     func_noreturn : 1, /* attribute((noreturn)) */
 537     func_ctor   : 1, /* attribute((constructor)) */
 538     func_dtor   : 1, /* attribute((destructor)) */
 539     func_args   : 8, /* PE __stdcall args */
 540     func_alwinl : 1, /* always_inline */
 541     xxxx        : 15;
 542 };
 543
 544 /* symbol management */
 545 typedef struct Sym {
 546     int v; /* symbol token */
 547     unsigned short r; /* associated register or VT_CONST/VT_LOCAL and LVAL type */
 548     struct SymAttr a; /* symbol attributes */
 549     union {
 550         struct {
 551             int c; /* associated number or Elf symbol index */
 552             union {
 553                 int sym_scope; /* scope level for locals */
 554                 int jnext; /* next jump label */
 555                 struct FuncAttr f; /* function attributes */
 556                 int auxtype; /* bitfield access type */
 557             };
 558         };
 559         long long enum_val; /* enum constant if IS_ENUM_VAL */
 560         int *d; /* define token stream */
 561         struct Sym *ncl; /* next cleanup */
 562     };
 563     CType type; /* associated type */
 564     union {
 565         struct Sym *next; /* next related symbol (for fields and anoms) */
 566         struct Sym *cleanupstate; /* in defined labels */
 567         int asm_label; /* associated asm label */
 568     };
 569     struct Sym *prev; /* prev symbol in stack */
 570     struct Sym *prev_tok; /* previous symbol for this token */
 571 } Sym;
 572
 573 /* section definition */
 574 typedef struct Section {
 575     unsigned long data_offset; /* current data offset */
 576     unsigned char *data;       /* section data */
 577     unsigned long data_allocated; /* used for realloc() handling */
 578     TCCState *s1;
 579     int sh_name;             /* elf section name (only used during output) */
 580     int sh_num;              /* elf section number */
 581     int sh_type;             /* elf section type */
 582     int sh_flags;            /* elf section flags */
 583     int sh_info;             /* elf section info */
 584     int sh_addralign;        /* elf section alignment */
 585     int sh_entsize;          /* elf entry size */
 586     unsigned long sh_size;   /* section size (only used during output) */
 587     addr_t sh_addr;          /* address at which the section is relocated */
 588     unsigned long sh_offset; /* file offset */
 589     int nb_hashed_syms;      /* used to resize the hash table */
 590     struct Section *link;    /* link to another section */
 591     struct Section *reloc;   /* corresponding section for relocation, if any */
 592     struct Section *hash;    /* hash table for symbols */
 593     struct Section *prev;    /* previous section on section stack */
 594     char name[1];           /* section name */
 595 } Section;
 596
 597 typedef struct DLLReference {
 598     int level;
 599     void *handle;
 600     char name[1];
 601 } DLLReference;
 602
 603 /* -------------------------------------------------- */
 604
 605 #define SYM_STRUCT     0x40000000 /* struct/union/enum symbol space */
 606 #define SYM_FIELD      0x20000000 /* struct/union field symbol space */
 607 #define SYM_FIRST_ANOM 0x10000000 /* first anonymous sym */
 608
 609 /* stored in 'Sym->f.func_type' field */
 610 #define FUNC_NEW       1 /* ansi function prototype */
 611 #define FUNC_OLD       2 /* old function prototype */
 612 #define FUNC_ELLIPSIS  3 /* ansi function prototype with ... */
 613
 614 /* stored in 'Sym->f.func_call' field */
 615 #define FUNC_CDECL     0 /* standard c call */
 616 #define FUNC_STDCALL   1 /* pascal c call */
 617 #define FUNC_FASTCALL1 2 /* first param in %eax */
 618 #define FUNC_FASTCALL2 3 /* first parameters in %eax, %edx */
 619 #define FUNC_FASTCALL3 4 /* first parameter in %eax, %edx, %ecx */
 620 #define FUNC_FASTCALLW 5 /* first parameter in %ecx, %edx */
 621
 622 /* field 'Sym.t' for macros */
 623 #define MACRO_OBJ      0 /* object like macro */
 624 #define MACRO_FUNC     1 /* function like macro */
 625
 626 /* field 'Sym.r' for C labels */
 627 #define LABEL_DEFINED  0 /* label is defined */
 628 #define LABEL_FORWARD  1 /* label is forward defined */
 629 #define LABEL_DECLARED 2 /* label is declared but never used */
 630 #define LABEL_GONE     3 /* label isn't in scope, but not yet popped
 631                             from local_label_stack (stmt exprs) */
 632
 633 /* type_decl() types */
 634 #define TYPE_ABSTRACT  1 /* type without variable */
 635 #define TYPE_DIRECT    2 /* type with variable */
 636
 637 #define IO_BUF_SIZE 8192
 638
 639 typedef struct BufferedFile {
 640     uint8_t *buf_ptr;
 641     uint8_t *buf_end;
 642     int fd;
 643     struct BufferedFile *prev;
 644     int line_num;    /* current line number - here to simplify code */
 645     int line_ref;    /* tcc -E: last printed line */
 646     int ifndef_macro;  /* #ifndef macro / #endif search */
 647     int ifndef_macro_saved; /* saved ifndef_macro */
 648     int *ifdef_stack_ptr; /* ifdef_stack value at the start of the file */
 649     int include_next_index; /* next search path */
 650     char filename[1024];    /* filename */
 651     char *true_filename; /* filename not modified by # line directive */
 652     unsigned char unget[4];
 653     unsigned char buffer[1]; /* extra size for CH_EOB char */
 654 } BufferedFile;
 655
 656 #define CH_EOB   '\\'       /* end of buffer or '\0' char in file */
 657 #define CH_EOF   (-1)   /* end of file */
 658
 659 /* used to record tokens */
 660 typedef struct TokenString {
 661     int *str;
 662     int len;
 663     int lastlen;
 664     int allocated_len;
 665     int last_line_num;
 666     int save_line_num;
 667     /* used to chain token-strings with begin/end_macro() */
 668     struct TokenString *prev;
 669     const int *prev_ptr;
 670     char alloc;
 671 } TokenString;
 672
 673 /* GNUC attribute definition */
 674 typedef struct AttributeDef {
 675     struct SymAttr a;
 676     struct FuncAttr f;
 677     struct Section *section;
 678     Sym *cleanup_func;
 679     int alias_target; /* token */
 680     int asm_label; /* associated asm label */
 681     char attr_mode; /* __attribute__((__mode__(...))) */
 682 } AttributeDef;
 683
 684 /* inline functions */
 685 typedef struct InlineFunc {
 686     TokenString *func_str;
 687     Sym *sym;
 688     char filename[1];
 689 } InlineFunc;
 690
 691 /* include file cache, used to find files faster and also to eliminate
 692    inclusion if the include file is protected by #ifndef ... #endif */
 693 typedef struct CachedInclude {
 694     int ifndef_macro;
 695     int once;
 696     int hash_next; /* -1 if none */
 697     char filename[1]; /* path specified in #include */
 698 } CachedInclude;
 699
 700 #define CACHED_INCLUDES_HASH_SIZE 32
 701
 702 #ifdef CONFIG_TCC_ASM
 703 typedef struct ExprValue {
 704     uint64_t v;
 705     Sym *sym;
 706     int pcrel;
 707 } ExprValue;
 708
 709 #define MAX_ASM_OPERANDS 30
 710 typedef struct ASMOperand {
 711     int id; /* GCC 3 optional identifier (0 if number only supported */
 712     char *constraint;
 713     char asm_str[16]; /* computed asm string for operand */
 714     SValue *vt; /* C value of the expression */
 715     int ref_index; /* if >= 0, gives reference to a output constraint */
 716     int input_index; /* if >= 0, gives reference to an input constraint */
 717     int priority; /* priority, used to assign registers */
 718     int reg; /* if >= 0, register number used for this operand */
 719     int is_llong; /* true if double register value */
 720     int is_memory; /* true if memory operand */
 721     int is_rw;     /* for '+' modifier */
 722 } ASMOperand;
 723 #endif
 724
 725 /* extra symbol attributes (not in symbol table) */
 726 struct sym_attr {
 727     unsigned got_offset;
 728     unsigned plt_offset;
 729     int plt_sym;
 730     int dyn_index;
 731 #ifdef TCC_TARGET_ARM
 732     unsigned char plt_thumb_stub:1;
 733 #endif
 734 };
 735
 736 struct TCCState {
 737     unsigned char verbose; /* if true, display some information during compilation */
 738     unsigned char nostdinc; /* if true, no standard headers are added */
 739     unsigned char nostdlib; /* if true, no standard libraries are added */
 740     unsigned char nocommon; /* if true, do not use common symbols for .bss data */
 741     unsigned char static_link; /* if true, static linking is performed */
 742     unsigned char rdynamic; /* if true, all symbols are exported */
 743     unsigned char symbolic; /* if true, resolve symbols in the current module first */
 744     unsigned char filetype; /* file type for compilation (NONE,C,ASM) */
 745     unsigned char optimize; /* only to #define __OPTIMIZE__ */
 746     unsigned char option_pthread; /* -pthread option */
 747     unsigned char enable_new_dtags; /* -Wl,--enable-new-dtags */
 748     unsigned int  cversion; /* supported C ISO version, 199901 (the default), 201112, ... */
 749
 750     char *tcc_lib_path; /* CONFIG_TCCDIR or -B option */
 751     char *soname; /* as specified on the command line (-soname) */
 752     char *rpath; /* as specified on the command line (-Wl,-rpath=) */
 753
 754     /* output type, see TCC_OUTPUT_XXX */
 755     int output_type;
 756     /* output format, see TCC_OUTPUT_FORMAT_xxx */
 757     int output_format;
 758
 759     /* C language options */
 760     unsigned char char_is_unsigned;
 761     unsigned char leading_underscore;
 762     unsigned char ms_extensions; /* allow nested named struct w/o identifier behave like unnamed */
 763     unsigned char dollars_in_identifiers;  /* allows '$' char in identifiers */
 764     unsigned char ms_bitfields; /* if true, emulate MS algorithm for aligning bitfields */
 765
 766     /* warning switches */
 767     unsigned char warn_write_strings;
 768     unsigned char warn_unsupported;
 769     unsigned char warn_error;
 770     unsigned char warn_none;
 771     unsigned char warn_implicit_function_declaration;
 772     unsigned char warn_gcc_compat;
 773
 774     /* compile with debug symbol (and use them if error during execution) */
 775     unsigned char do_debug;
 776     unsigned char do_backtrace;
 777 #ifdef CONFIG_TCC_BCHECK
 778     /* compile with built-in memory and bounds checker */
 779     unsigned char do_bounds_check;
 780 #endif
 781     unsigned char test_coverage;  /* generate test coverage code */
 782
 783 #ifdef TCC_TARGET_ARM
 784     enum float_abi float_abi; /* float ABI of the generated code*/
 785 #endif
 786     int run_test; /* nth test to run with -dt -run */
 787
 788     addr_t text_addr; /* address of text section */
 789     unsigned char has_text_addr;
 790
 791     unsigned section_align; /* section alignment */
 792
 793     /* use GNU C extensions */
 794     unsigned char gnu_ext;
 795     /* use TinyCC extensions */
 796     unsigned char tcc_ext;
 797
 798     char *init_symbol; /* symbols to call at load-time (not used currently) */
 799     char *fini_symbol; /* symbols to call at unload-time (not used currently) */
 800
 801 #ifdef TCC_TARGET_I386
 802     int seg_size; /* 32. Can be 16 with i386 assembler (.code16) */
 803 #endif
 804 #ifdef TCC_TARGET_X86_64
 805     unsigned char nosse; /* For -mno-sse support. */
 806 #endif
 807
 808     /* array of all loaded dlls (including those referenced by loaded dlls) */
 809     DLLReference **loaded_dlls;
 810     int nb_loaded_dlls;
 811
 812     /* include paths */
 813     char **include_paths;
 814     int nb_include_paths;
 815
 816     char **sysinclude_paths;
 817     int nb_sysinclude_paths;
 818
 819     /* library paths */
 820     char **library_paths;
 821     int nb_library_paths;
 822
 823     /* crt?.o object path */
 824     char **crt_paths;
 825     int nb_crt_paths;
 826
 827     /* -D / -U options */
 828     CString cmdline_defs;
 829     /* -include options */
 830     CString cmdline_incl;
 831
 832     /* error handling */
 833     void *error_opaque;
 834     void (*error_func)(void *opaque, const char *msg);
 835     int error_set_jmp_enabled;
 836     jmp_buf error_jmp_buf;
 837     int nb_errors;
 838
 839     /* output file for preprocessing (-E) */
 840     FILE *ppfp;
 841     enum {
 842         LINE_MACRO_OUTPUT_FORMAT_GCC,
 843         LINE_MACRO_OUTPUT_FORMAT_NONE,
 844         LINE_MACRO_OUTPUT_FORMAT_STD,
 845     LINE_MACRO_OUTPUT_FORMAT_P10 = 11
 846     } Pflag; /* -P switch */
 847     char dflag; /* -dX value */
 848
 849     /* for -MD/-MF: collected dependencies for this compilation */
 850     char **target_deps;
 851     int nb_target_deps;
 852
 853     /* compilation */
 854     BufferedFile *include_stack[INCLUDE_STACK_SIZE];
 855     BufferedFile **include_stack_ptr;
 856
 857     int ifdef_stack[IFDEF_STACK_SIZE];
 858     int *ifdef_stack_ptr;
 859
 860     /* included files enclosed with #ifndef MACRO */
 861     int cached_includes_hash[CACHED_INCLUDES_HASH_SIZE];
 862     CachedInclude **cached_includes;
 863     int nb_cached_includes;
 864
 865     /* #pragma pack stack */
 866     int pack_stack[PACK_STACK_SIZE];
 867     int *pack_stack_ptr;
 868     char **pragma_libs;
 869     int nb_pragma_libs;
 870
 871     /* inline functions are stored as token lists and compiled last
 872        only if referenced */
 873     struct InlineFunc **inline_fns;
 874     int nb_inline_fns;
 875
 876     /* sections */
 877     Section **sections;
 878     int nb_sections; /* number of sections, including first dummy section */
 879
 880     Section **priv_sections;
 881     int nb_priv_sections; /* number of private sections */
 882
 883     /* got & plt handling */
 884     Section *got;
 885     Section *plt;
 886
 887     /* predefined sections */
 888     Section *text_section, *data_section, *rodata_section, *bss_section;
 889     Section *common_section;
 890     Section *cur_text_section; /* current section where function code is generated */
 891 #ifdef CONFIG_TCC_BCHECK
 892     /* bound check related sections */
 893     Section *bounds_section; /* contains global data bound description */
 894     Section *lbounds_section; /* contains local data bound description */
 895 #endif
 896     /* test coverage */
 897     Section *tcov_section;
 898     /* symbol sections */
 899     Section *symtab_section;
 900     /* debug sections */
 901     Section *stab_section;
 902     /* Is there a new undefined sym since last new_undef_sym() */
 903     int new_undef_sym;
 904
 905     /* temporary dynamic symbol sections (for dll loading) */
 906     Section *dynsymtab_section;
 907     /* exported dynamic symbol section */
 908     Section *dynsym;
 909     /* copy of the global symtab_section variable */
 910     Section *symtab;
 911     /* extra attributes (eg. GOT/PLT value) for symtab symbols */
 912     struct sym_attr *sym_attrs;
 913     int nb_sym_attrs;
 914     /* ptr to next reloc entry reused */
 915     ElfW_Rel *qrel;
 916 #   define qrel s1->qrel
 917
 918 #ifdef TCC_TARGET_RISCV64
 919     struct pcrel_hi { addr_t addr, val; } last_hi;
 920 #   define last_hi s1->last_hi
 921 #endif
 922
 923 #ifdef TCC_TARGET_PE
 924     /* PE info */
 925     int pe_subsystem;
 926     unsigned pe_characteristics;
 927     unsigned pe_file_align;
 928     unsigned pe_stack_size;
 929     addr_t pe_imagebase;
 930 # ifdef TCC_TARGET_X86_64
 931     Section *uw_pdata;
 932     int uw_sym;
 933     unsigned uw_offs;
 934 # endif
 935 #endif
 936
 937 #ifndef ELF_OBJ_ONLY
 938     int nb_sym_versions;
 939     struct sym_version *sym_versions;
 940     int nb_sym_to_version;
 941     int *sym_to_version;
 942     int dt_verneednum;
 943     Section *versym_section;
 944     Section *verneed_section;
 945 #endif
 946
 947 #ifdef TCC_IS_NATIVE
 948     const char *runtime_main;
 949     void **runtime_mem;
 950     int nb_runtime_mem;
 951 #endif
 952
 953 #ifdef CONFIG_TCC_BACKTRACE
 954     int rt_num_callers;
 955 #endif
 956
 957     int fd, cc; /* used by tcc_load_ldscript */
 958
 959     /* benchmark info */
 960     int total_idents;
 961     int total_lines;
 962     int total_bytes;
 963     int total_output[4];
 964
 965     /* option -dnum (for general development purposes) */
 966     int g_debug;
 967
 968     /* for warnings/errors for object files*/
 969     const char *current_filename;
 970
 971     /* used by main and tcc_parse_args only */
 972     struct filespec **files; /* files seen on command line */
 973     int nb_files; /* number thereof */
 974     int nb_libraries; /* number of libs thereof */
 975     char *outfile; /* output filename */
 976     unsigned char option_r; /* option -r */
 977     unsigned char do_bench; /* option -bench */
 978     int gen_deps; /* option -MD  */
 979     char *deps_outfile; /* option -MF */
 980     int argc;
 981     char **argv;
 982 };
 983
 984 struct filespec {
 985     char type;
 986     char name[1];
 987 };
 988
 989 /* The current value can be: */
 990 #define VT_VALMASK   0x003f  /* mask for value location, register or: */
 991 #define VT_CONST     0x0030  /* constant in vc (must be first non register value) */
 992 #define VT_LLOCAL    0x0031  /* lvalue, offset on stack */
 993 #define VT_LOCAL     0x0032  /* offset on stack */
 994 #define VT_CMP       0x0033  /* the value is stored in processor flags (in vc) */
 995 #define VT_JMP       0x0034  /* value is the consequence of jmp true (even) */
 996 #define VT_JMPI      0x0035  /* value is the consequence of jmp false (odd) */
 997 #define VT_LVAL      0x0100  /* var is an lvalue */
 998 #define VT_SYM       0x0200  /* a symbol value is added */
 999 #define VT_MUSTCAST  0x0C00  /* value must be casted to be correct (used for
1000                                 char/short stored in integer registers) */
1001 #define VT_MUSTBOUND 0x4000  /* bound checking must be done before
1002                                 dereferencing value */
1003 #define VT_BOUNDED   0x8000  /* value is bounded. The address of the
1004                                 bounding function call point is in vc */
1005 /* types */
1006 #define VT_BTYPE       0x000f  /* mask for basic type */
1007 #define VT_VOID             0  /* void type */
1008 #define VT_BYTE             1  /* signed byte type */
1009 #define VT_SHORT            2  /* short type */
1010 #define VT_INT              3  /* integer type */
1011 #define VT_LLONG            4  /* 64 bit integer */
1012 #define VT_PTR              5  /* pointer */
1013 #define VT_FUNC             6  /* function type */
1014 #define VT_STRUCT           7  /* struct/union definition */
1015 #define VT_FLOAT            8  /* IEEE float */
1016 #define VT_DOUBLE           9  /* IEEE double */
1017 #define VT_LDOUBLE         10  /* IEEE long double */
1018 #define VT_BOOL            11  /* ISOC99 boolean type */
1019 #define VT_QLONG           13  /* 128-bit integer. Only used for x86-64 ABI */
1020 #define VT_QFLOAT          14  /* 128-bit float. Only used for x86-64 ABI */
1021
1022 #define VT_UNSIGNED    0x0010  /* unsigned type */
1023 #define VT_DEFSIGN     0x0020  /* explicitly signed or unsigned */
1024 #define VT_ARRAY       0x0040  /* array type (also has VT_PTR) */
1025 #define VT_BITFIELD    0x0080  /* bitfield modifier */
1026 #define VT_CONSTANT    0x0100  /* const modifier */
1027 #define VT_VOLATILE    0x0200  /* volatile modifier */
1028 #define VT_VLA         0x0400  /* VLA type (also has VT_PTR and VT_ARRAY) */
1029 #define VT_LONG        0x0800  /* long type (also has VT_INT rsp. VT_LLONG) */
1030
1031 /* storage */
1032 #define VT_EXTERN  0x00001000  /* extern definition */
1033 #define VT_STATIC  0x00002000  /* static variable */
1034 #define VT_TYPEDEF 0x00004000  /* typedef definition */
1035 #define VT_INLINE  0x00008000  /* inline definition */
1036 /* currently unused: 0x000[1248]0000  */
1037
1038 #define VT_STRUCT_SHIFT 20     /* shift for bitfield shift values (32 - 2*6) */
1039 #define VT_STRUCT_MASK (((1U << (6+6)) - 1) << VT_STRUCT_SHIFT | VT_BITFIELD)
1040 #define BIT_POS(t) (((t) >> VT_STRUCT_SHIFT) & 0x3f)
1041 #define BIT_SIZE(t) (((t) >> (VT_STRUCT_SHIFT + 6)) & 0x3f)
1042
1043 #define VT_UNION    (1 << VT_STRUCT_SHIFT | VT_STRUCT)
1044 #define VT_ENUM     (2 << VT_STRUCT_SHIFT) /* integral type is an enum really */
1045 #define VT_ENUM_VAL (3 << VT_STRUCT_SHIFT) /* integral type is an enum constant really */
1046
1047 #define IS_ENUM(t) ((t & VT_STRUCT_MASK) == VT_ENUM)
1048 #define IS_ENUM_VAL(t) ((t & VT_STRUCT_MASK) == VT_ENUM_VAL)
1049 #define IS_UNION(t) ((t & (VT_STRUCT_MASK|VT_BTYPE)) == VT_UNION)
1050
1051 #define VT_ATOMIC   VT_VOLATILE
1052 #define VT_MEMMODEL (VT_STATIC | VT_ENUM_VAL | VT_TYPEDEF)
1053
1054 /* type mask (except storage) */
1055 #define VT_STORAGE (VT_EXTERN | VT_STATIC | VT_TYPEDEF | VT_INLINE)
1056 #define VT_TYPE (~(VT_STORAGE|VT_STRUCT_MASK))
1057
1058 /* symbol was created by tccasm.c first */
1059 #define VT_ASM (VT_VOID | 1 << VT_STRUCT_SHIFT)
1060 #define VT_ASM_FUNC (VT_ASM | 2 << VT_STRUCT_SHIFT)
1061 #define IS_ASM_SYM(sym) (((sym)->type.t & (VT_BTYPE | VT_ASM)) == VT_ASM)
1062
1063 /* general: set/get the pseudo-bitfield value for bit-mask M */
1064 #define BFVAL(M,N) ((unsigned)((M) & ~((M) << 1)) * (N))
1065 #define BFGET(X,M) (((X) & (M)) / BFVAL(M,1))
1066 #define BFSET(X,M,N) ((X) = ((X) & ~(M)) | BFVAL(M,N))
1067
1068 /* token values */
1069
1070 /* conditional ops */
1071 #define TOK_LAND  0x90
1072 #define TOK_LOR   0x91
1073 /* warning: the following compare tokens depend on i386 asm code */
1074 #define TOK_ULT 0x92
1075 #define TOK_UGE 0x93
1076 #define TOK_EQ  0x94
1077 #define TOK_NE  0x95
1078 #define TOK_ULE 0x96
1079 #define TOK_UGT 0x97
1080 #define TOK_Nset 0x98
1081 #define TOK_Nclear 0x99
1082 #define TOK_LT  0x9c
1083 #define TOK_GE  0x9d
1084 #define TOK_LE  0x9e
1085 #define TOK_GT  0x9f
1086
1087 #define TOK_ISCOND(t) (t >= TOK_LAND && t <= TOK_GT)
1088
1089 #define TOK_DEC     0x80 /* -- */
1090 #define TOK_MID     0x81 /* inc/dec, to void constant */
1091 #define TOK_INC     0x82 /* ++ */
1092 #define TOK_UDIV    0x83 /* unsigned division */
1093 #define TOK_UMOD    0x84 /* unsigned modulo */
1094 #define TOK_PDIV    0x85 /* fast division with undefined rounding for pointers */
1095 #define TOK_UMULL   0x86 /* unsigned 32x32 -> 64 mul */
1096 #define TOK_ADDC1   0x87 /* add with carry generation */
1097 #define TOK_ADDC2   0x88 /* add with carry use */
1098 #define TOK_SUBC1   0x89 /* add with carry generation */
1099 #define TOK_SUBC2   0x8a /* add with carry use */
1100 #define TOK_SHL     '<' /* shift left */
1101 #define TOK_SAR     '>' /* signed shift right */
1102 #define TOK_SHR     0x8b /* unsigned shift right */
1103 #define TOK_NEG     TOK_MID /* unary minus operation (for floats) */
1104
1105 #define TOK_ARROW   0xa0 /* -> */
1106 #define TOK_DOTS    0xa1 /* three dots */
1107 #define TOK_TWODOTS 0xa2 /* C++ token ? */
1108 #define TOK_TWOSHARPS 0xa3 /* ## preprocessing token */
1109 #define TOK_PLCHLDR 0xa4 /* placeholder token as defined in C99 */
1110 #define TOK_NOSUBST 0xa5 /* means following token has already been pp'd */
1111 #define TOK_PPJOIN  0xa6 /* A '##' in the right position to mean pasting */
1112
1113 /* assignment operators */
1114 #define TOK_A_ADD   0xb0
1115 #define TOK_A_SUB   0xb1
1116 #define TOK_A_MUL   0xb2
1117 #define TOK_A_DIV   0xb3
1118 #define TOK_A_MOD   0xb4
1119 #define TOK_A_AND   0xb5
1120 #define TOK_A_OR    0xb6
1121 #define TOK_A_XOR   0xb7
1122 #define TOK_A_SHL   0xb8
1123 #define TOK_A_SAR   0xb9
1124
1125 #define TOK_ASSIGN(t) (t >= TOK_A_ADD && t <= TOK_A_SAR)
1126 #define TOK_ASSIGN_OP(t) ("+-*/%&|^<>"[t - TOK_A_ADD])
1127
1128 /* tokens that carry values (in additional token string space / tokc) --> */
1129 #define TOK_CCHAR   0xc0 /* char constant in tokc */
1130 #define TOK_LCHAR   0xc1
1131 #define TOK_CINT    0xc2 /* number in tokc */
1132 #define TOK_CUINT   0xc3 /* unsigned int constant */
1133 #define TOK_CLLONG  0xc4 /* long long constant */
1134 #define TOK_CULLONG 0xc5 /* unsigned long long constant */
1135 #define TOK_CLONG   0xc6 /* long constant */
1136 #define TOK_CULONG  0xc7 /* unsigned long constant */
1137 #define TOK_STR     0xc8 /* pointer to string in tokc */
1138 #define TOK_LSTR    0xc9
1139 #define TOK_CFLOAT  0xca /* float constant */
1140 #define TOK_CDOUBLE 0xcb /* double constant */
1141 #define TOK_CLDOUBLE 0xcc /* long double constant */
1142 #define TOK_PPNUM   0xcd /* preprocessor number */
1143 #define TOK_PPSTR   0xce /* preprocessor string */
1144 #define TOK_LINENUM 0xcf /* line number info */
1145
1146 #define TOK_HAS_VALUE(t) (t >= TOK_CCHAR && t <= TOK_LINENUM)
1147
1148 #define TOK_EOF       (-1)  /* end of file */
1149 #define TOK_LINEFEED  10    /* line feed */
1150
1151 /* all identifiers and strings have token above that */
1152 #define TOK_IDENT 256
1153
1154 #define DEF_ASM(x) DEF(TOK_ASM_ ## x, #x)
1155 #define TOK_ASM_int TOK_INT
1156 #define DEF_ASMDIR(x) DEF(TOK_ASMDIR_ ## x, "." #x)
1157 #define TOK_ASMDIR_FIRST TOK_ASMDIR_byte
1158 #define TOK_ASMDIR_LAST TOK_ASMDIR_section
1159
1160 #if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64
1161 /* only used for i386 asm opcodes definitions */
1162 #define DEF_BWL(x) \
1163  DEF(TOK_ASM_ ## x ## b, #x "b") \
1164  DEF(TOK_ASM_ ## x ## w, #x "w") \
1165  DEF(TOK_ASM_ ## x ## l, #x "l") \
1166  DEF(TOK_ASM_ ## x, #x)
1167 #define DEF_WL(x) \
1168  DEF(TOK_ASM_ ## x ## w, #x "w") \
1169  DEF(TOK_ASM_ ## x ## l, #x "l") \
1170  DEF(TOK_ASM_ ## x, #x)
1171 #ifdef TCC_TARGET_X86_64
1172 # define DEF_BWLQ(x) \
1173  DEF(TOK_ASM_ ## x ## b, #x "b") \
1174  DEF(TOK_ASM_ ## x ## w, #x "w") \
1175  DEF(TOK_ASM_ ## x ## l, #x "l") \
1176  DEF(TOK_ASM_ ## x ## q, #x "q") \
1177  DEF(TOK_ASM_ ## x, #x)
1178 # define DEF_WLQ(x) \
1179  DEF(TOK_ASM_ ## x ## w, #x "w") \
1180  DEF(TOK_ASM_ ## x ## l, #x "l") \
1181  DEF(TOK_ASM_ ## x ## q, #x "q") \
1182  DEF(TOK_ASM_ ## x, #x)
1183 # define DEF_BWLX DEF_BWLQ
1184 # define DEF_WLX DEF_WLQ
1185 /* number of sizes + 1 */
1186 # define NBWLX 5
1187 #else
1188 # define DEF_BWLX DEF_BWL
1189 # define DEF_WLX DEF_WL
1190 /* number of sizes + 1 */
1191 # define NBWLX 4
1192 #endif
1193
1194 #define DEF_FP1(x) \
1195  DEF(TOK_ASM_ ## f ## x ## s, "f" #x "s") \
1196  DEF(TOK_ASM_ ## fi ## x ## l, "fi" #x "l") \
1197  DEF(TOK_ASM_ ## f ## x ## l, "f" #x "l") \
1198  DEF(TOK_ASM_ ## fi ## x ## s, "fi" #x "s")
1199
1200 #define DEF_FP(x) \
1201  DEF(TOK_ASM_ ## f ## x, "f" #x ) \
1202  DEF(TOK_ASM_ ## f ## x ## p, "f" #x "p") \
1203  DEF_FP1(x)
1204
1205 #define DEF_ASMTEST(x,suffix) \
1206  DEF_ASM(x ## o ## suffix) \
1207  DEF_ASM(x ## no ## suffix) \
1208  DEF_ASM(x ## b ## suffix) \
1209  DEF_ASM(x ## c ## suffix) \
1210  DEF_ASM(x ## nae ## suffix) \
1211  DEF_ASM(x ## nb ## suffix) \
1212  DEF_ASM(x ## nc ## suffix) \
1213  DEF_ASM(x ## ae ## suffix) \
1214  DEF_ASM(x ## e ## suffix) \
1215  DEF_ASM(x ## z ## suffix) \
1216  DEF_ASM(x ## ne ## suffix) \
1217  DEF_ASM(x ## nz ## suffix) \
1218  DEF_ASM(x ## be ## suffix) \
1219  DEF_ASM(x ## na ## suffix) \
1220  DEF_ASM(x ## nbe ## suffix) \
1221  DEF_ASM(x ## a ## suffix) \
1222  DEF_ASM(x ## s ## suffix) \
1223  DEF_ASM(x ## ns ## suffix) \
1224  DEF_ASM(x ## p ## suffix) \
1225  DEF_ASM(x ## pe ## suffix) \
1226  DEF_ASM(x ## np ## suffix) \
1227  DEF_ASM(x ## po ## suffix) \
1228  DEF_ASM(x ## l ## suffix) \
1229  DEF_ASM(x ## nge ## suffix) \
1230  DEF_ASM(x ## nl ## suffix) \
1231  DEF_ASM(x ## ge ## suffix) \
1232  DEF_ASM(x ## le ## suffix) \
1233  DEF_ASM(x ## ng ## suffix) \
1234  DEF_ASM(x ## nle ## suffix) \
1235  DEF_ASM(x ## g ## suffix)
1236
1237 #endif /* defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64 */
1238
1239 enum tcc_token {
1240     TOK_LAST = TOK_IDENT - 1
1241 #define DEF(id, str) ,id
1242 #include "tcctok.h"
1243 #undef DEF
1244 };
1245
1246 /* keywords: tok >= TOK_IDENT && tok < TOK_UIDENT */
1247 #define TOK_UIDENT TOK_DEFINE
1248
1249 /* ------------ libtcc.c ------------ */
1250
1251 ST_DATA struct TCCState *tcc_state;
1252
1253 /* public functions currently used by the tcc main function */
1254 ST_FUNC char *pstrcpy(char *buf, size_t buf_size, const char *s);
1255 ST_FUNC char *pstrcat(char *buf, size_t buf_size, const char *s);
1256 ST_FUNC char *pstrncpy(char *out, const char *in, size_t num);
1257 PUB_FUNC char *tcc_basename(const char *name);
1258 PUB_FUNC char *tcc_fileextension (const char *name);
1259
1260 #ifndef MEM_DEBUG
1261 PUB_FUNC void tcc_free(void *ptr);
1262 PUB_FUNC void *tcc_malloc(unsigned long size);
1263 PUB_FUNC void *tcc_mallocz(unsigned long size);
1264 PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size);
1265 PUB_FUNC char *tcc_strdup(const char *str);
1266 #else
1267 #define tcc_free(ptr)           tcc_free_debug(ptr)
1268 #define tcc_malloc(size)        tcc_malloc_debug(size, __FILE__, __LINE__)
1269 #define tcc_mallocz(size)       tcc_mallocz_debug(size, __FILE__, __LINE__)
1270 #define tcc_realloc(ptr,size)   tcc_realloc_debug(ptr, size, __FILE__, __LINE__)
1271 #define tcc_strdup(str)         tcc_strdup_debug(str, __FILE__, __LINE__)
1272 PUB_FUNC void tcc_free_debug(void *ptr);
1273 PUB_FUNC void *tcc_malloc_debug(unsigned long size, const char *file, int line);
1274 PUB_FUNC void *tcc_mallocz_debug(unsigned long size, const char *file, int line);
1275 PUB_FUNC void *tcc_realloc_debug(void *ptr, unsigned long size, const char *file, int line);
1276 PUB_FUNC char *tcc_strdup_debug(const char *str, const char *file, int line);
1277 #endif
1278
1279 #define free(p) use_tcc_free(p)
1280 #define malloc(s) use_tcc_malloc(s)
1281 #define realloc(p, s) use_tcc_realloc(p, s)
1282 #undef strdup
1283 #define strdup(s) use_tcc_strdup(s)
1284 PUB_FUNC void _tcc_error_noabort(const char *fmt, ...) PRINTF_LIKE(1,2);
1285 PUB_FUNC NORETURN void _tcc_error(const char *fmt, ...) PRINTF_LIKE(1,2);
1286 PUB_FUNC void _tcc_warning(const char *fmt, ...) PRINTF_LIKE(1,2);
1287 #define tcc_internal_error(msg) tcc_error("internal compiler error\n"\
1288         "%s:%d: in %s(): " msg, __FILE__,__LINE__,__FUNCTION__)
1289
1290 /* other utilities */
1291 ST_FUNC void dynarray_add(void *ptab, int *nb_ptr, void *data);
1292 ST_FUNC void dynarray_reset(void *pp, int *n);
1293 ST_INLN void cstr_ccat(CString *cstr, int ch);
1294 ST_FUNC void cstr_cat(CString *cstr, const char *str, int len);
1295 ST_FUNC void cstr_wccat(CString *cstr, int ch);
1296 ST_FUNC void cstr_new(CString *cstr);
1297 ST_FUNC void cstr_free(CString *cstr);
1298 ST_FUNC int cstr_printf(CString *cs, const char *fmt, ...) PRINTF_LIKE(2,3);
1299 ST_FUNC void cstr_reset(CString *cstr);
1300
1301 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen);
1302 ST_FUNC int tcc_open(TCCState *s1, const char *filename);
1303 ST_FUNC void tcc_close(void);
1304
1305 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags);
1306 /* flags: */
1307 #define AFF_PRINT_ERROR     0x10 /* print error if file not found */
1308 #define AFF_REFERENCED_DLL  0x20 /* load a referenced dll from another dll */
1309 #define AFF_TYPE_BIN        0x40 /* file to add is binary */
1310 #define AFF_WHOLE_ARCHIVE   0x80 /* load all objects from archive */
1311 /* s->filetype: */
1312 #define AFF_TYPE_NONE   0
1313 #define AFF_TYPE_C      1
1314 #define AFF_TYPE_ASM    2
1315 #define AFF_TYPE_ASMPP  4
1316 #define AFF_TYPE_LIB    8
1317 #define AFF_TYPE_MASK   (15 | AFF_TYPE_BIN)
1318 /* values from tcc_object_type(...) */
1319 #define AFF_BINTYPE_REL 1
1320 #define AFF_BINTYPE_DYN 2
1321 #define AFF_BINTYPE_AR  3
1322 #define AFF_BINTYPE_C67 4
1323
1324 #ifndef ELF_OBJ_ONLY
1325 ST_FUNC int tcc_add_crt(TCCState *s, const char *filename);
1326 #endif
1327 #ifndef TCC_TARGET_MACHO
1328 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags);
1329 #endif
1330 #ifdef CONFIG_TCC_BCHECK
1331 ST_FUNC void tcc_add_bcheck(TCCState *s1);
1332 #endif
1333 #ifdef CONFIG_TCC_BACKTRACE
1334 ST_FUNC void tcc_add_btstub(TCCState *s1);
1335 #endif
1336 ST_FUNC void tcc_add_pragma_libs(TCCState *s1);
1337 PUB_FUNC int tcc_add_library_err(TCCState *s, const char *f);
1338 PUB_FUNC void tcc_print_stats(TCCState *s, unsigned total_time);
1339 PUB_FUNC int tcc_parse_args(TCCState *s, int *argc, char ***argv, int optind);
1340 #ifdef _WIN32
1341 ST_FUNC char *normalize_slashes(char *path);
1342 #endif
1343 #if !defined TCC_TARGET_MACHO || defined TCC_IS_NATIVE
1344 ST_FUNC DLLReference *tcc_add_dllref(TCCState *s1, const char *dllname);
1345 #endif
1346
1347 /* tcc_parse_args return codes: */
1348 #define OPT_HELP 1
1349 #define OPT_HELP2 2
1350 #define OPT_V 3
1351 #define OPT_PRINT_DIRS 4
1352 #define OPT_AR 5
1353 #define OPT_IMPDEF 6
1354 #define OPT_M32 32
1355 #define OPT_M64 64
1356
1357 /* ------------ tccpp.c ------------ */
1358
1359 ST_DATA struct BufferedFile *file;
1360 ST_DATA int ch, tok;
1361 ST_DATA CValue tokc;
1362 ST_DATA const int *macro_ptr;
1363 ST_DATA int parse_flags;
1364 ST_DATA int tok_flags;
1365 ST_DATA CString tokcstr; /* current parsed string, if any */
1366
1367 /* display benchmark infos */
1368 ST_DATA int tok_ident;
1369 ST_DATA TokenSym **table_ident;
1370
1371 #define TOK_FLAG_BOL   0x0001 /* beginning of line before */
1372 #define TOK_FLAG_BOF   0x0002 /* beginning of file before */
1373 #define TOK_FLAG_ENDIF 0x0004 /* a endif was found matching starting #ifdef */
1374 #define TOK_FLAG_EOF   0x0008 /* end of file */
1375
1376 #define PARSE_FLAG_PREPROCESS 0x0001 /* activate preprocessing */
1377 #define PARSE_FLAG_TOK_NUM    0x0002 /* return numbers instead of TOK_PPNUM */
1378 #define PARSE_FLAG_LINEFEED   0x0004 /* line feed is returned as a
1379                                         token. line feed is also
1380                                         returned at eof */
1381 #define PARSE_FLAG_ASM_FILE 0x0008 /* we processing an asm file: '#' can be used for line comment, etc. */
1382 #define PARSE_FLAG_SPACES     0x0010 /* next() returns space tokens (for -E) */
1383 #define PARSE_FLAG_ACCEPT_STRAYS 0x0020 /* next() returns '\\' token */
1384 #define PARSE_FLAG_TOK_STR    0x0040 /* return parsed strings instead of TOK_PPSTR */
1385
1386 /* isidnum_table flags: */
1387 #define IS_SPC 1
1388 #define IS_ID  2
1389 #define IS_NUM 4
1390
1391 ST_FUNC TokenSym *tok_alloc(const char *str, int len);
1392 ST_FUNC int tok_alloc_const(const char *str);
1393 ST_FUNC const char *get_tok_str(int v, CValue *cv);
1394 ST_FUNC void begin_macro(TokenString *str, int alloc);
1395 ST_FUNC void end_macro(void);
1396 ST_FUNC int set_idnum(int c, int val);
1397 ST_INLN void tok_str_new(TokenString *s);
1398 ST_FUNC TokenString *tok_str_alloc(void);
1399 ST_FUNC void tok_str_free(TokenString *s);
1400 ST_FUNC void tok_str_free_str(int *str);
1401 ST_FUNC void tok_str_add(TokenString *s, int t);
1402 ST_FUNC void tok_str_add_tok(TokenString *s);
1403 ST_INLN void define_push(int v, int macro_type, int *str, Sym *first_arg);
1404 ST_FUNC void define_undef(Sym *s);
1405 ST_INLN Sym *define_find(int v);
1406 ST_FUNC void free_defines(Sym *b);
1407 ST_FUNC Sym *label_find(int v);
1408 ST_FUNC Sym *label_push(Sym **ptop, int v, int flags);
1409 ST_FUNC void label_pop(Sym **ptop, Sym *slast, int keep);
1410 ST_FUNC void parse_define(void);
1411 ST_FUNC void preprocess(int is_bof);
1412 ST_FUNC void next(void);
1413 ST_INLN void unget_tok(int last_tok);
1414 ST_FUNC void preprocess_start(TCCState *s1, int filetype);
1415 ST_FUNC void preprocess_end(TCCState *s1);
1416 ST_FUNC void tccpp_new(TCCState *s);
1417 ST_FUNC void tccpp_delete(TCCState *s);
1418 ST_FUNC int tcc_preprocess(TCCState *s1);
1419 ST_FUNC void skip(int c);
1420 ST_FUNC NORETURN void expect(const char *msg);
1421 ST_FUNC NORETURN void expect_arg(const char *msg, size_t arg);
1422
1423 /* space excluding newline */
1424 static inline int is_space(int ch) {
1425     return ch == ' ' || ch == '\t' || ch == '\v' || ch == '\f' || ch == '\r';
1426 }
1427 static inline int isid(int c) {
1428     return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_';
1429 }
1430 static inline int isnum(int c) {
1431     return c >= '0' && c <= '9';
1432 }
1433 static inline int isoct(int c) {
1434     return c >= '0' && c <= '7';
1435 }
1436 static inline int toup(int c) {
1437     return (c >= 'a' && c <= 'z') ? c - 'a' + 'A' : c;
1438 }
1439
1440 /* ------------ tccgen.c ------------ */
1441
1442 #define SYM_POOL_NB (8192 / sizeof(Sym))
1443
1444 ST_DATA Sym *global_stack;
1445 ST_DATA Sym *local_stack;
1446 ST_DATA Sym *local_label_stack;
1447 ST_DATA Sym *global_label_stack;
1448 ST_DATA Sym *define_stack;
1449 ST_DATA CType int_type, func_old_type, char_pointer_type;
1450 ST_DATA SValue *vtop;
1451 ST_DATA int rsym, anon_sym, ind, loc;
1452 ST_DATA char debug_modes;
1453
1454 ST_DATA int const_wanted; /* true if constant wanted */
1455 ST_DATA int nocode_wanted; /* true if no code generation wanted for an expression */
1456 ST_DATA int global_expr;  /* true if compound literals must be allocated globally (used during initializers parsing */
1457 ST_DATA CType func_vt; /* current function return type (used by return instruction) */
1458 ST_DATA int func_var; /* true if current function is variadic */
1459 ST_DATA int func_vc;
1460 ST_DATA const char *funcname;
1461
1462 ST_FUNC void tcc_debug_start(TCCState *s1);
1463 ST_FUNC void tcc_debug_end(TCCState *s1);
1464 ST_FUNC void tcc_debug_bincl(TCCState *s1);
1465 ST_FUNC void tcc_debug_eincl(TCCState *s1);
1466 ST_FUNC void tcc_debug_putfile(TCCState *s1, const char *filename);
1467
1468 ST_FUNC void tccgen_init(TCCState *s1);
1469 ST_FUNC int tccgen_compile(TCCState *s1);
1470 ST_FUNC void tccgen_finish(TCCState *s1);
1471 ST_FUNC void check_vstack(void);
1472
1473 ST_INLN int is_float(int t);
1474 ST_FUNC int ieee_finite(double d);
1475 ST_FUNC int exact_log2p1(int i);
1476 ST_FUNC void test_lvalue(void);
1477
1478 ST_FUNC ElfSym *elfsym(Sym *);
1479 ST_FUNC void update_storage(Sym *sym);
1480 ST_FUNC void put_extern_sym2(Sym *sym, int sh_num, addr_t value, unsigned long size, int can_add_underscore);
1481 ST_FUNC void put_extern_sym(Sym *sym, Section *section, addr_t value, unsigned long size);
1482 #if PTR_SIZE == 4
1483 ST_FUNC void greloc(Section *s, Sym *sym, unsigned long offset, int type);
1484 #endif
1485 ST_FUNC void greloca(Section *s, Sym *sym, unsigned long offset, int type, addr_t addend);
1486
1487 ST_INLN void sym_free(Sym *sym);
1488 ST_FUNC Sym *sym_push(int v, CType *type, int r, int c);
1489 ST_FUNC void sym_pop(Sym **ptop, Sym *b, int keep);
1490 ST_FUNC Sym *sym_push2(Sym **ps, int v, int t, int c);
1491 ST_FUNC Sym *sym_find2(Sym *s, int v);
1492 ST_INLN Sym *sym_find(int v);
1493 ST_INLN Sym *struct_find(int v);
1494
1495 ST_FUNC Sym *global_identifier_push(int v, int t, int c);
1496 ST_FUNC Sym *external_global_sym(int v, CType *type);
1497 ST_FUNC Sym *external_helper_sym(int v);
1498 ST_FUNC void vpush_helper_func(int v);
1499 ST_FUNC void vset(CType *type, int r, int v);
1500 ST_FUNC void vset_VT_CMP(int op);
1501 ST_FUNC void vpushi(int v);
1502 ST_FUNC void vpushv(SValue *v);
1503 ST_FUNC void vpushsym(CType *type, Sym *sym);
1504 ST_FUNC void vswap(void);
1505 ST_FUNC void vrote(SValue *e, int n);
1506 ST_FUNC void vrott(int n);
1507 ST_FUNC void vrotb(int n);
1508 ST_FUNC void vpop(void);
1509 #if PTR_SIZE == 4
1510 ST_FUNC void lexpand(void);
1511 #endif
1512 #ifdef TCC_TARGET_ARM
1513 ST_FUNC int get_reg_ex(int rc, int rc2);
1514 #endif
1515 ST_FUNC void save_reg(int r);
1516 ST_FUNC void save_reg_upstack(int r, int n);
1517 ST_FUNC int get_reg(int rc);
1518 ST_FUNC void save_regs(int n);
1519 ST_FUNC void gaddrof(void);
1520 ST_FUNC int gv(int rc);
1521 ST_FUNC void gv2(int rc1, int rc2);
1522 ST_FUNC void gen_op(int op);
1523 ST_FUNC int type_size(CType *type, int *a);
1524 ST_FUNC void mk_pointer(CType *type);
1525 ST_FUNC void vstore(void);
1526 ST_FUNC void inc(int post, int c);
1527 ST_FUNC void parse_mult_str (CString *astr, const char *msg);
1528 ST_FUNC void parse_asm_str(CString *astr);
1529 ST_FUNC void indir(void);
1530 ST_FUNC void unary(void);
1531 ST_FUNC void gexpr(void);
1532 ST_FUNC int expr_const(void);
1533 #if defined CONFIG_TCC_BCHECK || defined TCC_TARGET_C67
1534 ST_FUNC Sym *get_sym_ref(CType *type, Section *sec, unsigned long offset, unsigned long size);
1535 #endif
1536 #if defined TCC_TARGET_X86_64 && !defined TCC_TARGET_PE
1537 ST_FUNC int classify_x86_64_va_arg(CType *ty);
1538 #endif
1539 #ifdef CONFIG_TCC_BCHECK
1540 ST_FUNC void gbound_args(int nb_args);
1541 ST_DATA int func_bound_add_epilog;
1542 #endif
1543
1544 /* ------------ tccelf.c ------------ */
1545
1546 #define TCC_OUTPUT_FORMAT_ELF    0 /* default output format: ELF */
1547 #define TCC_OUTPUT_FORMAT_BINARY 1 /* binary image output */
1548 #define TCC_OUTPUT_FORMAT_COFF   2 /* COFF */
1549
1550 #define ARMAG  "!<arch>\012"    /* For COFF and a.out archives */
1551
1552 typedef struct {
1553     unsigned int n_strx;         /* index into string table of name */
1554     unsigned char n_type;         /* type of symbol */
1555     unsigned char n_other;        /* misc info (usually empty) */
1556     unsigned short n_desc;        /* description field */
1557     unsigned int n_value;        /* value of symbol */
1558 } Stab_Sym;
1559
1560 ST_FUNC void tccelf_new(TCCState *s);
1561 ST_FUNC void tccelf_delete(TCCState *s);
1562 ST_FUNC void tccelf_stab_new(TCCState *s);
1563 ST_FUNC void tccelf_begin_file(TCCState *s1);
1564 ST_FUNC void tccelf_end_file(TCCState *s1);
1565 #ifdef CONFIG_TCC_BCHECK
1566 ST_FUNC void tccelf_bounds_new(TCCState *s);
1567 #endif
1568 ST_FUNC Section *new_section(TCCState *s1, const char *name, int sh_type, int sh_flags);
1569 ST_FUNC void section_realloc(Section *sec, unsigned long new_size);
1570 ST_FUNC size_t section_add(Section *sec, addr_t size, int align);
1571 ST_FUNC void *section_ptr_add(Section *sec, addr_t size);
1572 ST_FUNC Section *find_section(TCCState *s1, const char *name);
1573 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);
1574
1575 ST_FUNC int put_elf_str(Section *s, const char *sym);
1576 ST_FUNC int put_elf_sym(Section *s, addr_t value, unsigned long size, int info, int other, int shndx, const char *name);
1577 ST_FUNC int set_elf_sym(Section *s, addr_t value, unsigned long size, int info, int other, int shndx, const char *name);
1578 ST_FUNC int find_elf_sym(Section *s, const char *name);
1579 ST_FUNC void put_elf_reloc(Section *symtab, Section *s, unsigned long offset, int type, int symbol);
1580 ST_FUNC void put_elf_reloca(Section *symtab, Section *s, unsigned long offset, int type, int symbol, addr_t addend);
1581
1582 ST_FUNC void put_stabs(TCCState *s1, const char *str, int type, int other, int desc, unsigned long value);
1583 ST_FUNC void put_stabs_r(TCCState *s1, const char *str, int type, int other, int desc, unsigned long value, Section *sec, int sym_index);
1584 ST_FUNC void put_stabn(TCCState *s1, int type, int other, int desc, int value);
1585
1586 ST_FUNC void resolve_common_syms(TCCState *s1);
1587 ST_FUNC void relocate_syms(TCCState *s1, Section *symtab, int do_resolve);
1588 ST_FUNC void relocate_sections(TCCState *s1);
1589
1590 ST_FUNC ssize_t full_read(int fd, void *buf, size_t count);
1591 ST_FUNC void *load_data(int fd, unsigned long file_offset, unsigned long size);
1592 ST_FUNC int tcc_object_type(int fd, ElfW(Ehdr) *h);
1593 ST_FUNC int tcc_load_object_file(TCCState *s1, int fd, unsigned long file_offset);
1594 ST_FUNC int tcc_load_archive(TCCState *s1, int fd, int alacarte);
1595 ST_FUNC void add_array(TCCState *s1, const char *sec, int c);
1596
1597 #if !defined(ELF_OBJ_ONLY) || (defined(TCC_TARGET_MACHO) && defined TCC_IS_NATIVE)
1598 ST_FUNC void build_got_entries(TCCState *s1);
1599 #endif
1600 ST_FUNC struct sym_attr *get_sym_attr(TCCState *s1, int index, int alloc);
1601 ST_FUNC addr_t get_sym_addr(TCCState *s, const char *name, int err, int forc);
1602 ST_FUNC void list_elf_symbols(TCCState *s, void *ctx,
1603     void (*symbol_cb)(void *ctx, const char *name, const void *val));
1604 ST_FUNC int set_global_sym(TCCState *s1, const char *name, Section *sec, addr_t offs);
1605
1606 /* Browse each elem of type <type> in section <sec> starting at elem <startoff>
1607    using variable <elem> */
1608 #define for_each_elem(sec, startoff, elem, type) \
1609     for (elem = (type *) sec->data + startoff; \
1610          elem < (type *) (sec->data + sec->data_offset); elem++)
1611
1612 #ifndef ELF_OBJ_ONLY
1613 ST_FUNC int tcc_load_dll(TCCState *s1, int fd, const char *filename, int level);
1614 ST_FUNC int tcc_load_ldscript(TCCState *s1, int fd);
1615 #endif
1616 #ifndef TCC_TARGET_PE
1617 ST_FUNC void tcc_add_runtime(TCCState *s1);
1618 #endif
1619
1620 /* ------------ xxx-link.c ------------ */
1621
1622 /* Whether to generate a GOT/PLT entry and when. NO_GOTPLT_ENTRY is first so
1623    that unknown relocation don't create a GOT or PLT entry */
1624 enum gotplt_entry {
1625     NO_GOTPLT_ENTRY,    /* never generate (eg. GLOB_DAT & JMP_SLOT relocs) */
1626     BUILD_GOT_ONLY,     /* only build GOT (eg. TPOFF relocs) */
1627     AUTO_GOTPLT_ENTRY,  /* generate if sym is UNDEF */
1628     ALWAYS_GOTPLT_ENTRY /* always generate (eg. PLTOFF relocs) */
1629 };
1630
1631 #if !defined(ELF_OBJ_ONLY) || defined(TCC_TARGET_MACHO)
1632 ST_FUNC int code_reloc (int reloc_type);
1633 ST_FUNC int gotplt_entry_type (int reloc_type);
1634 #if !defined(TCC_TARGET_MACHO) || defined TCC_IS_NATIVE
1635 ST_FUNC unsigned create_plt_entry(TCCState *s1, unsigned got_offset, struct sym_attr *attr);
1636 ST_FUNC void relocate_plt(TCCState *s1);
1637 #endif
1638 #endif
1639 ST_FUNC void relocate(TCCState *s1, ElfW_Rel *rel, int type, unsigned char *ptr, addr_t addr, addr_t val);
1640
1641 /* ------------ xxx-gen.c ------------ */
1642 ST_DATA const char * const target_machine_defs;
1643 ST_DATA const int reg_classes[NB_REGS];
1644
1645 ST_FUNC void gsym_addr(int t, int a);
1646 ST_FUNC void gsym(int t);
1647 ST_FUNC void load(int r, SValue *sv);
1648 ST_FUNC void store(int r, SValue *v);
1649 ST_FUNC int gfunc_sret(CType *vt, int variadic, CType *ret, int *align, int *regsize);
1650 ST_FUNC void gfunc_call(int nb_args);
1651 ST_FUNC void gfunc_prolog(Sym *func_sym);
1652 ST_FUNC void gfunc_epilog(void);
1653 ST_FUNC void gen_fill_nops(int);
1654 ST_FUNC int gjmp(int t);
1655 ST_FUNC void gjmp_addr(int a);
1656 ST_FUNC int gjmp_cond(int op, int t);
1657 ST_FUNC int gjmp_append(int n, int t);
1658 ST_FUNC void gen_opi(int op);
1659 ST_FUNC void gen_opf(int op);
1660 ST_FUNC void gen_cvt_ftoi(int t);
1661 ST_FUNC void gen_cvt_itof(int t);
1662 ST_FUNC void gen_cvt_ftof(int t);
1663 ST_FUNC void ggoto(void);
1664 #ifndef TCC_TARGET_C67
1665 ST_FUNC void o(unsigned int c);
1666 #endif
1667 ST_FUNC void gen_vla_sp_save(int addr);
1668 ST_FUNC void gen_vla_sp_restore(int addr);
1669 ST_FUNC void gen_vla_alloc(CType *type, int align);
1670
1671 static inline uint16_t read16le(unsigned char *p) {
1672     return p[0] | (uint16_t)p[1] << 8;
1673 }
1674 static inline void write16le(unsigned char *p, uint16_t x) {
1675     p[0] = x & 255;  p[1] = x >> 8 & 255;
1676 }
1677 static inline uint32_t read32le(unsigned char *p) {
1678   return read16le(p) | (uint32_t)read16le(p + 2) << 16;
1679 }
1680 static inline void write32le(unsigned char *p, uint32_t x) {
1681     write16le(p, x);  write16le(p + 2, x >> 16);
1682 }
1683 static inline void add32le(unsigned char *p, int32_t x) {
1684     write32le(p, read32le(p) + x);
1685 }
1686 static inline uint64_t read64le(unsigned char *p) {
1687   return read32le(p) | (uint64_t)read32le(p + 4) << 32;
1688 }
1689 static inline void write64le(unsigned char *p, uint64_t x) {
1690     write32le(p, x);  write32le(p + 4, x >> 32);
1691 }
1692 static inline void add64le(unsigned char *p, int64_t x) {
1693     write64le(p, read64le(p) + x);
1694 }
1695
1696 /* ------------ i386-gen.c ------------ */
1697 #if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64 || defined TCC_TARGET_ARM
1698 ST_FUNC void g(int c);
1699 ST_FUNC void gen_le16(int c);
1700 ST_FUNC void gen_le32(int c);
1701 #endif
1702 #if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64
1703 ST_FUNC void gen_addr32(int r, Sym *sym, int c);
1704 ST_FUNC void gen_addrpc32(int r, Sym *sym, int c);
1705 ST_FUNC void gen_cvt_csti(int t);
1706 ST_FUNC void gen_increment_tcov (SValue *sv);
1707 #endif
1708
1709 /* ------------ x86_64-gen.c ------------ */
1710 #ifdef TCC_TARGET_X86_64
1711 ST_FUNC void gen_addr64(int r, Sym *sym, int64_t c);
1712 ST_FUNC void gen_opl(int op);
1713 #ifdef TCC_TARGET_PE
1714 ST_FUNC void gen_vla_result(int addr);
1715 #endif
1716 ST_FUNC void gen_cvt_sxtw(void);
1717 ST_FUNC void gen_cvt_csti(int t);
1718 #endif
1719
1720 /* ------------ arm-gen.c ------------ */
1721 #ifdef TCC_TARGET_ARM
1722 #if defined(TCC_ARM_EABI) && !defined(CONFIG_TCC_ELFINTERP)
1723 PUB_FUNC const char *default_elfinterp(struct TCCState *s);
1724 #endif
1725 ST_FUNC void arm_init(struct TCCState *s);
1726 ST_FUNC void gen_increment_tcov (SValue *sv);
1727 #endif
1728
1729 /* ------------ arm64-gen.c ------------ */
1730 #ifdef TCC_TARGET_ARM64
1731 ST_FUNC void gen_opl(int op);
1732 ST_FUNC void gfunc_return(CType *func_type);
1733 ST_FUNC void gen_va_start(void);
1734 ST_FUNC void gen_va_arg(CType *t);
1735 ST_FUNC void gen_clear_cache(void);
1736 ST_FUNC void gen_cvt_sxtw(void);
1737 ST_FUNC void gen_cvt_csti(int t);
1738 ST_FUNC void gen_increment_tcov (SValue *sv);
1739 #endif
1740
1741 /* ------------ riscv64-gen.c ------------ */
1742 #ifdef TCC_TARGET_RISCV64
1743 ST_FUNC void gen_opl(int op);
1744 //ST_FUNC void gfunc_return(CType *func_type);
1745 ST_FUNC void gen_va_start(void);
1746 ST_FUNC void arch_transfer_ret_regs(int);
1747 ST_FUNC void gen_cvt_sxtw(void);
1748 ST_FUNC void gen_increment_tcov (SValue *sv);
1749 #endif
1750
1751 /* ------------ c67-gen.c ------------ */
1752 #ifdef TCC_TARGET_C67
1753 #endif
1754
1755 /* ------------ tcccoff.c ------------ */
1756
1757 #ifdef TCC_TARGET_COFF
1758 ST_FUNC int tcc_output_coff(TCCState *s1, FILE *f);
1759 ST_FUNC int tcc_load_coff(TCCState * s1, int fd);
1760 #endif
1761
1762 /* ------------ tccasm.c ------------ */
1763 ST_FUNC void asm_instr(void);
1764 ST_FUNC void asm_global_instr(void);
1765 #ifdef CONFIG_TCC_ASM
1766 ST_FUNC int find_constraint(ASMOperand *operands, int nb_operands, const char *name, const char **pp);
1767 ST_FUNC Sym* get_asm_sym(int name, Sym *csym);
1768 ST_FUNC void asm_expr(TCCState *s1, ExprValue *pe);
1769 ST_FUNC int asm_int_expr(TCCState *s1);
1770 ST_FUNC int tcc_assemble(TCCState *s1, int do_preprocess);
1771 /* ------------ i386-asm.c ------------ */
1772 ST_FUNC void gen_expr32(ExprValue *pe);
1773 #ifdef TCC_TARGET_X86_64
1774 ST_FUNC void gen_expr64(ExprValue *pe);
1775 #endif
1776 ST_FUNC void asm_opcode(TCCState *s1, int opcode);
1777 ST_FUNC int asm_parse_regvar(int t);
1778 ST_FUNC void asm_compute_constraints(ASMOperand *operands, int nb_operands, int nb_outputs, const uint8_t *clobber_regs, int *pout_reg);
1779 ST_FUNC void subst_asm_operand(CString *add_str, SValue *sv, int modifier);
1780 ST_FUNC void asm_gen_code(ASMOperand *operands, int nb_operands, int nb_outputs, int is_output, uint8_t *clobber_regs, int out_reg);
1781 ST_FUNC void asm_clobber(uint8_t *clobber_regs, const char *str);
1782 #endif
1783
1784 /* ------------ tccpe.c -------------- */
1785 #ifdef TCC_TARGET_PE
1786 ST_FUNC int pe_load_file(struct TCCState *s1, int fd, const char *filename);
1787 ST_FUNC int pe_output_file(TCCState * s1, const char *filename);
1788 ST_FUNC int pe_putimport(TCCState *s1, int dllindex, const char *name, addr_t value);
1789 #if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64
1790 ST_FUNC SValue *pe_getimport(SValue *sv, SValue *v2);
1791 #endif
1792 #ifdef TCC_TARGET_X86_64
1793 ST_FUNC void pe_add_unwind_data(unsigned start, unsigned end, unsigned stack);
1794 #endif
1795 PUB_FUNC int tcc_get_dllexports(const char *filename, char **pp);
1796 /* symbol properties stored in Elf32_Sym->st_other */
1797 # define ST_PE_EXPORT 0x10
1798 # define ST_PE_IMPORT 0x20
1799 # define ST_PE_STDCALL 0x40
1800 #endif
1801 #define ST_ASM_SET 0x04
1802
1803 /* ------------ tccmacho.c ----------------- */
1804 #ifdef TCC_TARGET_MACHO
1805 ST_FUNC int macho_output_file(TCCState * s1, const char *filename);
1806 ST_FUNC int macho_load_dll(TCCState *s1, int fd, const char *filename, int lev);
1807 #endif
1808 /* ------------ tccrun.c ----------------- */
1809 #ifdef TCC_IS_NATIVE
1810 #ifdef CONFIG_TCC_STATIC
1811 #define RTLD_LAZY       0x001
1812 #define RTLD_NOW        0x002
1813 #define RTLD_GLOBAL     0x100
1814 #define RTLD_DEFAULT    NULL
1815 /* dummy function for profiling */
1816 ST_FUNC void *dlopen(const char *filename, int flag);
1817 ST_FUNC void dlclose(void *p);
1818 ST_FUNC const char *dlerror(void);
1819 ST_FUNC void *dlsym(void *handle, const char *symbol);
1820 #endif
1821 ST_FUNC void tcc_run_free(TCCState *s1);
1822 #endif
1823
1824 /* ------------ tcctools.c ----------------- */
1825 #if 0 /* included in tcc.c */
1826 ST_FUNC int tcc_tool_ar(TCCState *s, int argc, char **argv);
1827 #ifdef TCC_TARGET_PE
1828 ST_FUNC int tcc_tool_impdef(TCCState *s, int argc, char **argv);
1829 #endif
1830 ST_FUNC void tcc_tool_cross(TCCState *s, char **argv, int option);
1831 ST_FUNC void gen_makedeps(TCCState *s, const char *target, const char *filename);
1832 #endif
1833
1834 /********************************************************/
1835 #undef ST_DATA
1836 #if ONE_SOURCE
1837 #define ST_DATA static
1838 #else
1839 #define ST_DATA
1840 #endif
1841 /********************************************************/
1842
1843 #define text_section        TCC_STATE_VAR(text_section)
1844 #define data_section        TCC_STATE_VAR(data_section)
1845 #define rodata_section      TCC_STATE_VAR(rodata_section)
1846 #define bss_section         TCC_STATE_VAR(bss_section)
1847 #define common_section      TCC_STATE_VAR(common_section)
1848 #define cur_text_section    TCC_STATE_VAR(cur_text_section)
1849 #define bounds_section      TCC_STATE_VAR(bounds_section)
1850 #define lbounds_section     TCC_STATE_VAR(lbounds_section)
1851 #define tcov_section        TCC_STATE_VAR(tcov_section)
1852 #define symtab_section      TCC_STATE_VAR(symtab_section)
1853 #define stab_section        TCC_STATE_VAR(stab_section)
1854 #define stabstr_section     stab_section->link
1855 #define gnu_ext             TCC_STATE_VAR(gnu_ext)
1856 #define tcc_error_noabort   TCC_SET_STATE(_tcc_error_noabort)
1857 #define tcc_error           TCC_SET_STATE(_tcc_error)
1858 #define tcc_warning         TCC_SET_STATE(_tcc_warning)
1859
1860 #define total_idents        TCC_STATE_VAR(total_idents)
1861 #define total_lines         TCC_STATE_VAR(total_lines)
1862 #define total_bytes         TCC_STATE_VAR(total_bytes)
1863
1864 PUB_FUNC void tcc_enter_state(TCCState *s1);
1865 PUB_FUNC void tcc_exit_state(void);
1866
1867 /********************************************************/
1868 #endif /* _TCC_H */
1869
1870 #undef TCC_STATE_VAR
1871 #undef TCC_SET_STATE
1872
1873 #ifdef USING_GLOBALS
1874 # define TCC_STATE_VAR(sym) tcc_state->sym
1875 # define TCC_SET_STATE(fn) fn
1876 # undef USING_GLOBALS
1877 #else
1878 # define TCC_STATE_VAR(sym) s1->sym
1879 # define TCC_SET_STATE(fn) (tcc_enter_state(s1),fn)
1880 /* actually we could avoid the tcc_enter_state(s1) hack by using
1881    __VA_ARGS__ except that some compiler doesn't support it. */
1882 #endif