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