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tcc.h
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tcc.h
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/*
* TCC - Tiny C Compiler
*
* Copyright (c) 2001-2004 Fabrice Bellard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _TCC_H
#define _TCC_H
#define _GNU_SOURCE
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <errno.h>
#include <math.h>
#include <fcntl.h>
#include <setjmp.h>
#include <time.h>
#ifndef _WIN32
# include <unistd.h>
# include <sys/time.h>
# ifndef CONFIG_TCC_STATIC
# include <dlfcn.h>
# endif
/* XXX: need to define this to use them in non ISOC99 context */
extern float strtof (const char *__nptr, char **__endptr);
extern long double strtold (const char *__nptr, char **__endptr);
#else /* on _WIN32: */
# include <windows.h>
# include <io.h> /* open, close etc. */
# include <direct.h> /* getcwd */
# ifdef __GNUC__
# include <stdint.h>
# endif
# define inline __inline
# define inp next_inp /* inp is an intrinsic on msvc */
# define snprintf _snprintf
# define vsnprintf _vsnprintf
# ifndef __GNUC__
# define strtold (long double)strtod
# define strtof (float)strtod
# define strtoll _strtoi64
# define strtoull _strtoui64
# endif
# ifdef LIBTCC_AS_DLL
# define LIBTCCAPI __declspec(dllexport)
# define PUB_FUNC LIBTCCAPI
# endif
# ifdef _MSC_VER
# pragma warning (disable : 4244) // conversion from 'uint64_t' to 'int', possible loss of data
# pragma warning (disable : 4267) // conversion from 'size_t' to 'int', possible loss of data
# pragma warning (disable : 4996) // The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name
# pragma warning (disable : 4018) // signed/unsigned mismatch
# pragma warning (disable : 4146) // unary minus operator applied to unsigned type, result still unsigned
# define ssize_t intptr_t
# define __attribute__(x) __declspec x
# define aligned align
# else
# endif
# undef CONFIG_TCC_STATIC
#endif
#ifndef O_BINARY
# define O_BINARY 0
#endif
#ifdef __GNUC__
# define NORETURN __attribute__ ((noreturn))
#elif defined _MSC_VER
# define NORETURN __declspec(noreturn)
#else
# define NORETURN
#endif
#ifdef _WIN32
# define IS_DIRSEP(c) (c == '/' || c == '\\')
# define IS_ABSPATH(p) (IS_DIRSEP(p[0]) || (p[0] && p[1] == ':' && IS_DIRSEP(p[2])))
# define PATHCMP stricmp
#else
# define IS_DIRSEP(c) (c == '/')
# define IS_ABSPATH(p) IS_DIRSEP(p[0])
# define PATHCMP strcmp
#endif
#ifdef TCC_TARGET_PE
#define PATHSEP ';'
#else
#define PATHSEP ':'
#endif
/* -------------------------------------------- */
/* parser debug */
/* #define PARSE_DEBUG */
/* preprocessor debug */
/* #define PP_DEBUG */
/* include file debug */
/* #define INC_DEBUG */
/* memory leak debug */
/* #define MEM_DEBUG */
/* assembler debug */
/* #define ASM_DEBUG */
/* exsymtab */
/* #define CONFIG_TCC_EXSYMTAB */
/* target selection */
/* #define TCC_TARGET_I386 *//* i386 code generator */
/* #define TCC_TARGET_ARM *//* ARMv4 code generator */
/* #define TCC_TARGET_ARM64 *//* ARMv8 code generator */
/* #define TCC_TARGET_C67 *//* TMS320C67xx code generator */
/* #define TCC_TARGET_X86_64 *//* x86-64 code generator */
/* default target is I386 */
#if !defined(TCC_TARGET_I386) && !defined(TCC_TARGET_ARM) && \
!defined(TCC_TARGET_ARM64) && !defined(TCC_TARGET_C67) && \
!defined(TCC_TARGET_X86_64)
#define TCC_TARGET_I386
#endif
#if !defined(TCC_UCLIBC) && !defined(TCC_TARGET_ARM) && \
!defined(TCC_TARGET_ARM64) && !defined(TCC_TARGET_C67) && \
!defined(CONFIG_USE_LIBGCC)
#define CONFIG_TCC_BCHECK /* enable bound checking code */
#endif
/* define it to include assembler support */
#if !defined(TCC_TARGET_ARM) && !defined(TCC_TARGET_ARM64) && \
!defined(TCC_TARGET_C67)
#define CONFIG_TCC_ASM
#endif
/* object format selection */
#if defined(TCC_TARGET_C67)
#define TCC_TARGET_COFF
#endif
/* only native compiler supports -run */
#if defined _WIN32 == defined TCC_TARGET_PE
# if (defined __i386__ || defined _X86_) && defined TCC_TARGET_I386
# define TCC_IS_NATIVE
# elif (defined __x86_64__ || defined _AMD64_) && defined TCC_TARGET_X86_64
# define TCC_IS_NATIVE
# elif defined __arm__ && defined TCC_TARGET_ARM
# define TCC_IS_NATIVE
# elif defined __aarch64__ && defined TCC_TARGET_ARM64
# define TCC_IS_NATIVE
# endif
#endif
#if defined TCC_IS_NATIVE && !defined CONFIG_TCCBOOT
# define CONFIG_TCC_BACKTRACE
#endif
/* ------------ path configuration ------------ */
#ifndef CONFIG_SYSROOT
# define CONFIG_SYSROOT ""
#endif
#ifndef CONFIG_TCCDIR
# define CONFIG_TCCDIR "."
#endif
#ifndef CONFIG_LDDIR
# define CONFIG_LDDIR "lib"
#endif
#ifdef CONFIG_TRIPLET
# define USE_TRIPLET(s) s "/" CONFIG_TRIPLET
# define ALSO_TRIPLET(s) USE_TRIPLET(s) ":" s
#else
# define USE_TRIPLET(s) s
# define ALSO_TRIPLET(s) s
#endif
/* path to find crt1.o, crti.o and crtn.o */
#ifndef CONFIG_TCC_CRTPREFIX
# define CONFIG_TCC_CRTPREFIX USE_TRIPLET(CONFIG_SYSROOT "/usr/" CONFIG_LDDIR)
#endif
/* Below: {B} is substituted by CONFIG_TCCDIR (rsp. -B option) */
/* system include paths */
#ifndef CONFIG_TCC_SYSINCLUDEPATHS
# ifdef TCC_TARGET_PE
# define CONFIG_TCC_SYSINCLUDEPATHS "{B}/include;{B}/include/winapi"
# else
# define CONFIG_TCC_SYSINCLUDEPATHS \
"{B}/include" \
":" ALSO_TRIPLET(CONFIG_SYSROOT "/usr/local/include") \
":" ALSO_TRIPLET(CONFIG_SYSROOT "/usr/include")
# endif
#endif
/* library search paths */
#ifndef CONFIG_TCC_LIBPATHS
# ifdef TCC_TARGET_PE
# define CONFIG_TCC_LIBPATHS "{B}/lib"
# else
# define CONFIG_TCC_LIBPATHS \
ALSO_TRIPLET(CONFIG_SYSROOT "/usr/" CONFIG_LDDIR) \
":" ALSO_TRIPLET(CONFIG_SYSROOT "/" CONFIG_LDDIR) \
":" ALSO_TRIPLET(CONFIG_SYSROOT "/usr/local/" CONFIG_LDDIR)
# endif
#endif
/* name of ELF interpreter */
#ifndef CONFIG_TCC_ELFINTERP
# if defined __FreeBSD__
# define CONFIG_TCC_ELFINTERP "/libexec/ld-elf.so.1"
# elif defined __FreeBSD_kernel__
# if defined(TCC_TARGET_X86_64)
# define CONFIG_TCC_ELFINTERP "/lib/ld-kfreebsd-x86-64.so.1"
# else
# define CONFIG_TCC_ELFINTERP "/lib/ld.so.1"
# endif
# elif defined __DragonFly__
# define CONFIG_TCC_ELFINTERP "/usr/libexec/ld-elf.so.2"
# elif defined __NetBSD__
# define CONFIG_TCC_ELFINTERP "/usr/libexec/ld.elf_so"
# elif defined __GNU__
# define CONFIG_TCC_ELFINTERP "/lib/ld.so"
# elif defined(TCC_TARGET_PE)
# define CONFIG_TCC_ELFINTERP "-"
# elif defined(TCC_UCLIBC)
# define CONFIG_TCC_ELFINTERP "/lib/ld-uClibc.so.0" /* is there a uClibc for x86_64 ? */
# elif defined TCC_TARGET_ARM64
# define CONFIG_TCC_ELFINTERP "/lib/ld-linux-aarch64.so.1"
# elif defined(TCC_TARGET_X86_64)
# define CONFIG_TCC_ELFINTERP "/lib64/ld-linux-x86-64.so.2"
# elif !defined(TCC_ARM_EABI)
# define CONFIG_TCC_ELFINTERP "/lib/ld-linux.so.2"
# endif
#endif
/* var elf_interp dans *-gen.c */
#ifdef CONFIG_TCC_ELFINTERP
# define DEFAULT_ELFINTERP(s) CONFIG_TCC_ELFINTERP
#else
# define DEFAULT_ELFINTERP(s) default_elfinterp(s)
#endif
/* target specific subdir for libtcc1.a */
#ifndef TCC_ARCH_DIR
# define TCC_ARCH_DIR ""
#endif
/* library to use with CONFIG_USE_LIBGCC instead of libtcc1.a */
#define TCC_LIBGCC USE_TRIPLET(CONFIG_SYSROOT "/" CONFIG_LDDIR) "/libgcc_s.so.1"
/* -------------------------------------------- */
#include "libtcc.h"
#include "elf.h"
#include "stab.h"
#if defined(TCC_TARGET_ARM64) || defined(TCC_TARGET_X86_64)
# define ELFCLASSW ELFCLASS64
# define ElfW(type) Elf##64##_##type
# define ELFW(type) ELF##64##_##type
# define ElfW_Rel ElfW(Rela)
# define SHT_RELX SHT_RELA
# define REL_SECTION_FMT ".rela%s"
#else
# define ELFCLASSW ELFCLASS32
# define ElfW(type) Elf##32##_##type
# define ELFW(type) ELF##32##_##type
# define ElfW_Rel ElfW(Rel)
# define SHT_RELX SHT_REL
# define REL_SECTION_FMT ".rel%s"
#endif
/* target address type */
#define addr_t ElfW(Addr)
/* -------------------------------------------- */
/* include the target specific definitions */
#define TARGET_DEFS_ONLY
#ifdef TCC_TARGET_I386
# include "i386-gen.c"
# include "i386-link.c"
#endif
#ifdef TCC_TARGET_X86_64
# include "x86_64-gen.c"
# include "x86_64-link.c"
#endif
#ifdef TCC_TARGET_ARM
# include "arm-gen.c"
# include "arm-link.c"
#endif
#ifdef TCC_TARGET_ARM64
# include "arm64-gen.c"
# include "arm64-link.c"
#endif
#ifdef TCC_TARGET_C67
# include "coff.h"
# include "c67-gen.c"
# include "c67-link.c"
#endif
#undef TARGET_DEFS_ONLY
/* -------------------------------------------- */
#define INCLUDE_STACK_SIZE 32
#define IFDEF_STACK_SIZE 64
#define VSTACK_SIZE 256
#define STRING_MAX_SIZE 1024
#define TOKSTR_MAX_SIZE 256
#define PACK_STACK_SIZE 8
#define TOK_HASH_SIZE 16384 /* must be a power of two */
#define TOK_ALLOC_INCR 512 /* must be a power of two */
#define TOK_MAX_SIZE 4 /* token max size in int unit when stored in string */
/* token symbol management */
typedef struct TokenSym {
struct TokenSym *hash_next;
struct Sym *sym_define; /* direct pointer to define */
struct Sym *sym_label; /* direct pointer to label */
struct Sym *sym_struct; /* direct pointer to structure */
struct Sym *sym_identifier; /* direct pointer to identifier */
int tok; /* token number */
int len;
char str[1];
} TokenSym;
#ifdef TCC_TARGET_PE
typedef unsigned short nwchar_t;
#else
typedef int nwchar_t;
#endif
typedef struct CString {
int size; /* size in bytes */
void *data; /* either 'char *' or 'nwchar_t *' */
int size_allocated;
} CString;
/* type definition */
typedef struct CType {
int t;
struct Sym *ref;
} CType;
/* constant value */
typedef union CValue {
long double ld;
double d;
float f;
uint64_t i;
struct {
int size;
const void *data;
} str;
int tab[LDOUBLE_SIZE/4];
} CValue;
/* value on stack */
typedef struct SValue {
CType type; /* type */
unsigned short r; /* register + flags */
unsigned short r2; /* second register, used for 'long long'
type. If not used, set to VT_CONST */
CValue c; /* constant, if VT_CONST */
struct Sym *sym; /* symbol, if (VT_SYM | VT_CONST), or if
result of unary() for an identifier. */
} SValue;
struct Attribute {
unsigned
func_call : 3, /* calling convention (0..5), see below */
aligned : 5, /* alignment as log2+1 (0 == unspecified) */
packed : 1,
func_export : 1,
func_import : 1,
func_args : 5,
func_proto : 1,
mode : 4,
weak : 1,
visibility : 2,
unsigned_enum : 1,
fill : 7; // 7 bits left to fit well in union below
};
/* GNUC attribute definition */
typedef struct AttributeDef {
struct Attribute a;
struct Section *section;
int alias_target; /* token */
int asm_label; /* associated asm label */
} AttributeDef;
/* symbol management */
typedef struct Sym {
int v; /* symbol token */
union {
int asm_label; /* associated asm label */
int scope; /* scope level for locals */
};
union {
long r; /* associated register or VT_CONST/VT_LOCAL and LVAL type */
struct Attribute a;
};
union {
long c; /* associated number */
int *d; /* define token stream */
};
CType type; /* associated type */
union {
struct Sym *next; /* next related symbol (for fields and anoms) */
long jnext; /* next jump label */
};
struct Sym *prev; /* prev symbol in stack */
struct Sym *prev_tok; /* previous symbol for this token */
} Sym;
/* section definition */
/* XXX: use directly ELF structure for parameters ? */
/* special flag to indicate that the section should not be linked to
the other ones */
#define SHF_PRIVATE 0x80000000
/* special flag, too */
#define SECTION_ABS ((void *)1)
typedef struct Section {
unsigned long data_offset; /* current data offset */
unsigned char *data; /* section data */
unsigned long data_allocated; /* used for realloc() handling */
int sh_name; /* elf section name (only used during output) */
int sh_num; /* elf section number */
int sh_type; /* elf section type */
int sh_flags; /* elf section flags */
int sh_info; /* elf section info */
int sh_addralign; /* elf section alignment */
int sh_entsize; /* elf entry size */
unsigned long sh_size; /* section size (only used during output) */
addr_t sh_addr; /* address at which the section is relocated */
unsigned long sh_offset; /* file offset */
int nb_hashed_syms; /* used to resize the hash table */
struct Section *link; /* link to another section */
struct Section *reloc; /* corresponding section for relocation, if any */
struct Section *hash; /* hash table for symbols */
struct Section *prev; /* previous section on section stack */
char name[1]; /* section name */
} Section;
typedef struct DLLReference {
int level;
void *handle;
char name[1];
} DLLReference;
/* -------------------------------------------------- */
/* #ifdef CONFIG_TCC_EXSYMTAB */
#define SYM_EXTENDED 0x40000000 /* extended symbol space */
#define SYM_STRUCT 0x20000000 /* struct/union/enum symbol space */
#define SYM_FIELD 0x10000000 /* struct/union field symbol space */
#define SYM_FIRST_ANOM 0x08000000 /* first anonymous sym */
/* #else */
#if 0
#define SYM_STRUCT 0x40000000 /* struct/union/enum symbol space */
#define SYM_FIELD 0x20000000 /* struct/union field symbol space */
#define SYM_FIRST_ANOM 0x10000000 /* first anonymous sym */
#endif
/* stored in 'Sym.c' field */
#define FUNC_NEW 1 /* ansi function prototype */
#define FUNC_OLD 2 /* old function prototype */
#define FUNC_ELLIPSIS 3 /* ansi function prototype with ... */
/* stored in 'Sym.r' field */
#define FUNC_CDECL 0 /* standard c call */
#define FUNC_STDCALL 1 /* pascal c call */
#define FUNC_FASTCALL1 2 /* first param in %eax */
#define FUNC_FASTCALL2 3 /* first parameters in %eax, %edx */
#define FUNC_FASTCALL3 4 /* first parameter in %eax, %edx, %ecx */
#define FUNC_FASTCALLW 5 /* first parameter in %ecx, %edx */
/* field 'Sym.t' for macros */
#define MACRO_OBJ 0 /* object like macro */
#define MACRO_FUNC 1 /* function like macro */
/* field 'Sym.r' for C labels */
#define LABEL_DEFINED 0 /* label is defined */
#define LABEL_FORWARD 1 /* label is forward defined */
#define LABEL_DECLARED 2 /* label is declared but never used */
/* type_decl() types */
#define TYPE_ABSTRACT 1 /* type without variable */
#define TYPE_DIRECT 2 /* type with variable */
#define IO_BUF_SIZE 8192
typedef struct BufferedFile {
uint8_t *buf_ptr;
uint8_t *buf_end;
int fd;
struct BufferedFile *prev;
int line_num; /* current line number - here to simplify code */
int line_ref; /* tcc -E: last printed line */
int ifndef_macro; /* #ifndef macro / #endif search */
int ifndef_macro_saved; /* saved ifndef_macro */
int *ifdef_stack_ptr; /* ifdef_stack value at the start of the file */
int include_next_index; /* next search path */
char filename[1024]; /* filename */
unsigned char unget[4];
unsigned char buffer[1]; /* extra size for CH_EOB char */
} BufferedFile;
#define CH_EOB '\\' /* end of buffer or '\0' char in file */
#define CH_EOF (-1) /* end of file */
/* parsing state (used to save parser state to reparse part of the
source several times) */
typedef struct ParseState {
const int *macro_ptr;
int line_num;
int tok;
CValue tokc;
} ParseState;
/* used to record tokens */
typedef struct TokenString {
int *str;
int len;
int allocated_len;
int last_line_num;
/* used to chain token-strings with begin/end_macro() */
struct TokenString *prev;
const int *prev_ptr;
char alloc;
} TokenString;
/* inline functions */
typedef struct InlineFunc {
TokenString *func_str;
Sym *sym;
char filename[1];
} InlineFunc;
/* include file cache, used to find files faster and also to eliminate
inclusion if the include file is protected by #ifndef ... #endif */
typedef struct CachedInclude {
int ifndef_macro;
int once;
int hash_next; /* -1 if none */
char filename[1]; /* path specified in #include */
} CachedInclude;
#define CACHED_INCLUDES_HASH_SIZE 32
#ifdef CONFIG_TCC_ASM
typedef struct ExprValue {
uint64_t v;
Sym *sym;
int pcrel;
} ExprValue;
#define MAX_ASM_OPERANDS 30
typedef struct ASMOperand {
int id; /* GCC 3 optionnal identifier (0 if number only supported */
char *constraint;
char asm_str[16]; /* computed asm string for operand */
SValue *vt; /* C value of the expression */
int ref_index; /* if >= 0, gives reference to a output constraint */
int input_index; /* if >= 0, gives reference to an input constraint */
int priority; /* priority, used to assign registers */
int reg; /* if >= 0, register number used for this operand */
int is_llong; /* true if double register value */
int is_memory; /* true if memory operand */
int is_rw; /* for '+' modifier */
} ASMOperand;
#endif
/* extra symbol attributes (not in symbol table) */
struct sym_attr {
unsigned got_offset;
unsigned plt_offset;
int plt_sym;
int dyn_index;
#ifdef TCC_TARGET_ARM
unsigned char plt_thumb_stub:1;
#endif
};
struct TCCState {
int verbose; /* if true, display some information during compilation */
int nostdinc; /* if true, no standard headers are added */
int nostdlib; /* if true, no standard libraries are added */
int nocommon; /* if true, do not use common symbols for .bss data */
int static_link; /* if true, static linking is performed */
int rdynamic; /* if true, all symbols are exported */
int symbolic; /* if true, resolve symbols in the current module first */
int alacarte_link; /* if true, only link in referenced objects from archive */
char *tcc_lib_path; /* CONFIG_TCCDIR or -B option */
char *soname; /* as specified on the command line (-soname) */
char *rpath; /* as specified on the command line (-Wl,-rpath=) */
/* output type, see TCC_OUTPUT_XXX */
int output_type;
/* output format, see TCC_OUTPUT_FORMAT_xxx */
int output_format;
/* C language options */
int char_is_unsigned;
int leading_underscore;
int ms_extensions; /* allow nested named struct w/o identifier behave like unnamed */
int old_struct_init_code; /* use old algorithm to init array in struct when there is no '{' used.
Liuux 2.4.26 can't find initrd when compiled with a new algorithm */
int dollars_in_identifiers; /* allows '$' char in indentifiers */
int ms_bitfields; /* if true, emulate MS algorithm for aligning bitfields */
/* warning switches */
int warn_write_strings;
int warn_unsupported;
int warn_error;
int warn_none;
int warn_implicit_function_declaration;
/* compile with debug symbol (and use them if error during execution) */
int do_debug;
#ifdef CONFIG_TCC_BCHECK
/* compile with built-in memory and bounds checker */
int do_bounds_check;
#endif
#ifdef TCC_TARGET_ARM
enum float_abi float_abi; /* float ABI of the generated code*/
#endif
addr_t text_addr; /* address of text section */
int has_text_addr;
unsigned section_align; /* section alignment */
char *init_symbol; /* symbols to call at load-time (not used currently) */
char *fini_symbol; /* symbols to call at unload-time (not used currently) */
#ifdef TCC_TARGET_I386
int seg_size; /* 32. Can be 16 with i386 assembler (.code16) */
#endif
#ifdef TCC_TARGET_X86_64
int nosse; /* For -mno-sse support. */
#endif
/* array of all loaded dlls (including those referenced by loaded dlls) */
DLLReference **loaded_dlls;
int nb_loaded_dlls;
/* include paths */
char **include_paths;
int nb_include_paths;
char **sysinclude_paths;
int nb_sysinclude_paths;
/* library paths */
char **library_paths;
int nb_library_paths;
/* crt?.o object path */
char **crt_paths;
int nb_crt_paths;
/* -include files */
char **cmd_include_files;
int nb_cmd_include_files;
/* error handling */
void *error_opaque;
void (*error_func)(void *opaque, const char *msg);
int error_set_jmp_enabled;
jmp_buf error_jmp_buf;
int nb_errors;
/* output file for preprocessing (-E) */
FILE *ppfp;
enum {
LINE_MACRO_OUTPUT_FORMAT_GCC,
LINE_MACRO_OUTPUT_FORMAT_NONE,
LINE_MACRO_OUTPUT_FORMAT_STD
} Pflag; /* -P switch */
char dflag; /* -dX value */
/* for -MD/-MF: collected dependencies for this compilation */
char **target_deps;
int nb_target_deps;
/* compilation */
BufferedFile *include_stack[INCLUDE_STACK_SIZE];
BufferedFile **include_stack_ptr;
int ifdef_stack[IFDEF_STACK_SIZE];
int *ifdef_stack_ptr;
/* included files enclosed with #ifndef MACRO */
int cached_includes_hash[CACHED_INCLUDES_HASH_SIZE];
CachedInclude **cached_includes;
int nb_cached_includes;
/* #pragma pack stack */
int pack_stack[PACK_STACK_SIZE];
int *pack_stack_ptr;
char **pragma_libs;
int nb_pragma_libs;
/* inline functions are stored as token lists and compiled last
only if referenced */
struct InlineFunc **inline_fns;
int nb_inline_fns;
/* sections */
Section **sections;
int nb_sections; /* number of sections, including first dummy section */
Section **priv_sections;
int nb_priv_sections; /* number of private sections */
/* got & plt handling */
Section *got;
Section *plt;
/* temporary dynamic symbol sections (for dll loading) */
Section *dynsymtab_section;
/* exported dynamic symbol section */
Section *dynsym;
/* copy of the gobal symtab_section variable */
Section *symtab;
/* extra attributes (eg. GOT/PLT value) for symtab symbols */
struct sym_attr *sym_attrs;
int nb_sym_attrs;
/* tiny assembler state */
Sym *asm_labels;
#ifdef TCC_TARGET_PE
/* PE info */
int pe_subsystem;
unsigned pe_file_align;
unsigned pe_stack_size;
# ifdef TCC_TARGET_X86_64
Section *uw_pdata;
int uw_sym;
unsigned uw_offs;
# endif
#endif
#ifdef TCC_IS_NATIVE
const char *runtime_main;
void **runtime_mem;
int nb_runtime_mem;
#endif
/* used by main and tcc_parse_args only */
struct filespec **files; /* files seen on command line */
int nb_files; /* number thereof */
int nb_libraries; /* number of libs thereof */
int filetype;
char *outfile; /* output filename */
int cross_target; /* -m32/-m64 */
int print_search_dirs; /* option */
int option_r; /* option -r */
int do_bench; /* option -bench */
int gen_deps; /* option -MD */
char *deps_outfile; /* option -MF */
/* #ifdef CONFIG_TCC_EXSYMTAB */
/* ---- Extended symbol table handling ---- */
struct extended_symtab * exsymtab;
extended_symtab_lookup_by_name_callback symtab_name_callback;
extended_symtab_sym_used_callback symtab_sym_used_callback;
extended_symtab_prep_callback symtab_prep_callback;
void * symtab_callback_data;
char * symtab_serialize_outfile; /* option -serialize-symtab */
char * dump_identifier_names_outfile; /* option -dump-identifier-names */
/* #endif */
int option_pthread; /* -pthread option */
};
struct filespec {
char type, name[1];
};
/* The current value can be: */
#define VT_VALMASK 0x003f /* mask for value location, register or: */
#define VT_CONST 0x0030 /* constant in vc (must be first non register value) */
#define VT_LLOCAL 0x0031 /* lvalue, offset on stack */
#define VT_LOCAL 0x0032 /* offset on stack */
#define VT_CMP 0x0033 /* the value is stored in processor flags (in vc) */
#define VT_JMP 0x0034 /* value is the consequence of jmp true (even) */
#define VT_JMPI 0x0035 /* value is the consequence of jmp false (odd) */
#define VT_REF 0x0040 /* value is pointer to structure rather than address */
#define VT_LVAL 0x0100 /* var is an lvalue */
#define VT_SYM 0x0200 /* a symbol value is added */
#define VT_MUSTCAST 0x0400 /* value must be casted to be correct (used for
char/short stored in integer registers) */
#define VT_MUSTBOUND 0x0800 /* bound checking must be done before
dereferencing value */
#define VT_BOUNDED 0x8000 /* value is bounded. The address of the
bounding function call point is in vc */
#define VT_LVAL_BYTE 0x1000 /* lvalue is a byte */
#define VT_LVAL_SHORT 0x2000 /* lvalue is a short */
#define VT_LVAL_UNSIGNED 0x4000 /* lvalue is unsigned */
#define VT_LVAL_TYPE (VT_LVAL_BYTE | VT_LVAL_SHORT | VT_LVAL_UNSIGNED)
/* types */
#define VT_BTYPE 0x000f /* mask for basic type */
#define VT_INT 0 /* integer type */
#define VT_BYTE 1 /* signed byte type */
#define VT_SHORT 2 /* short type */
#define VT_VOID 3 /* void type */
#define VT_PTR 4 /* pointer */
#define VT_ENUM 5 /* enum definition */
#define VT_FUNC 6 /* function type */
#define VT_STRUCT 7 /* struct/union definition */
#define VT_FLOAT 8 /* IEEE float */
#define VT_DOUBLE 9 /* IEEE double */
#define VT_LDOUBLE 10 /* IEEE long double */
#define VT_BOOL 11 /* ISOC99 boolean type */
#define VT_LLONG 12 /* 64 bit integer */
#define VT_LONG 13 /* long integer (NEVER USED as type, only
during parsing) */
#define VT_QLONG 14 /* 128-bit integer. Only used for x86-64 ABI */
#define VT_QFLOAT 15 /* 128-bit float. Only used for x86-64 ABI */
#define VT_UNSIGNED 0x0010 /* unsigned type */
#define VT_ARRAY 0x0020 /* array type (also has VT_PTR) */
#define VT_BITFIELD 0x0040 /* bitfield modifier */
#define VT_CONSTANT 0x0800 /* const modifier */
#define VT_VOLATILE 0x1000 /* volatile modifier */
#define VT_DEFSIGN 0x2000 /* signed type */
#define VT_VLA 0x00020000 /* VLA type (also has VT_PTR and VT_ARRAY) */
/* storage */
#define VT_EXTERN 0x00000080 /* extern definition */
#define VT_STATIC 0x00000100 /* static variable */
#define VT_TYPEDEF 0x00000200 /* typedef definition */
#define VT_INLINE 0x00000400 /* inline definition */
#define VT_IMPORT 0x00004000 /* win32: extern data imported from dll */
#define VT_EXPORT 0x00008000 /* win32: data exported from dll */
#define VT_WEAK 0x00010000 /* weak symbol */
#define VT_TLS 0x00040000 /* thread-local storage */
#define VT_VIS_SHIFT 19 /* shift for symbol visibility, overlapping
bitfield values, because bitfields never
have linkage and hence never have
visibility. */
#define VT_VIS_SIZE 2 /* We have four visibilities. */
#define VT_VIS_MASK (((1 << VT_VIS_SIZE)-1) << VT_VIS_SHIFT)
#define VT_STRUCT_SHIFT 19 /* shift for bitfield shift values (max: 32 - 2*6) */
/* type mask (except storage) */
#define VT_STORAGE (VT_EXTERN | VT_STATIC | VT_TYPEDEF | VT_INLINE | VT_IMPORT | VT_EXPORT | VT_WEAK | VT_VIS_MASK)
#define VT_TYPE (~(VT_STORAGE))
/* token values */
/* warning: the following compare tokens depend on i386 asm code */
#define TOK_ULT 0x92
#define TOK_UGE 0x93
#define TOK_EQ 0x94
#define TOK_NE 0x95
#define TOK_ULE 0x96
#define TOK_UGT 0x97
#define TOK_Nset 0x98
#define TOK_Nclear 0x99
#define TOK_LT 0x9c
#define TOK_GE 0x9d
#define TOK_LE 0x9e
#define TOK_GT 0x9f
#define TOK_LAND 0xa0
#define TOK_LOR 0xa1
#define TOK_DEC 0xa2
#define TOK_MID 0xa3 /* inc/dec, to void constant */
#define TOK_INC 0xa4
#define TOK_UDIV 0xb0 /* unsigned division */
#define TOK_UMOD 0xb1 /* unsigned modulo */
#define TOK_PDIV 0xb2 /* fast division with undefined rounding for pointers */
/* tokens that carry values (in additional token string space / tokc) --> */
#define TOK_CCHAR 0xb3 /* char constant in tokc */
#define TOK_LCHAR 0xb4
#define TOK_CINT 0xb5 /* number in tokc */
#define TOK_CUINT 0xb6 /* unsigned int constant */
#define TOK_CLLONG 0xb7 /* long long constant */
#define TOK_CULLONG 0xb8 /* unsigned long long constant */
#define TOK_STR 0xb9 /* pointer to string in tokc */
#define TOK_LSTR 0xba
#define TOK_CFLOAT 0xbb /* float constant */
#define TOK_CDOUBLE 0xbc /* double constant */
#define TOK_CLDOUBLE 0xbd /* long double constant */
#define TOK_PPNUM 0xbe /* preprocessor number */
#define TOK_PPSTR 0xbf /* preprocessor string */
#define TOK_LINENUM 0xc0 /* line number info */
/* <-- */
#define TOK_UMULL 0xc2 /* unsigned 32x32 -> 64 mul */
#define TOK_ADDC1 0xc3 /* add with carry generation */
#define TOK_ADDC2 0xc4 /* add with carry use */
#define TOK_SUBC1 0xc5 /* add with carry generation */
#define TOK_SUBC2 0xc6 /* add with carry use */
#define TOK_ARROW 0xc7
#define TOK_DOTS 0xc8 /* three dots */
#define TOK_SHR 0xc9 /* unsigned shift right */
#define TOK_TWOSHARPS 0xca /* ## preprocessing token */
#define TOK_PLCHLDR 0xcb /* placeholder token as defined in C99 */
#define TOK_NOSUBST 0xcc /* means following token has already been pp'd */
#define TOK_PPJOIN 0xce /* A '##' in the right position to mean pasting */
#define TOK_SHL 0x01 /* shift left */
#define TOK_SAR 0x02 /* signed shift right */
/* assignement operators : normal operator or 0x80 */
#define TOK_A_MOD 0xa5
#define TOK_A_AND 0xa6
#define TOK_A_MUL 0xaa
#define TOK_A_ADD 0xab
#define TOK_A_SUB 0xad
#define TOK_A_DIV 0xaf
#define TOK_A_XOR 0xde
#define TOK_A_OR 0xfc
#define TOK_A_SHL 0x81
#define TOK_A_SAR 0x82
#ifndef offsetof
#define offsetof(type, field) ((size_t) &((type *)0)->field)
#endif
#ifndef countof
#define countof(tab) (sizeof(tab) / sizeof((tab)[0]))
#endif
#define TOK_EOF (-1) /* end of file */
#define TOK_LINEFEED 10 /* line feed */
/* all identificators and strings have token above that */
#define TOK_IDENT 256
#define DEF_ASM(x) DEF(TOK_ASM_ ## x, #x)
#define TOK_ASM_int TOK_INT
#define DEF_ASMDIR(x) DEF(TOK_ASMDIR_ ## x, "." #x)
#define TOK_ASMDIR_FIRST TOK_ASMDIR_byte
#define TOK_ASMDIR_LAST TOK_ASMDIR_section
#if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64
/* only used for i386 asm opcodes definitions */
#define DEF_BWL(x) \
DEF(TOK_ASM_ ## x ## b, #x "b") \
DEF(TOK_ASM_ ## x ## w, #x "w") \
DEF(TOK_ASM_ ## x ## l, #x "l") \
DEF(TOK_ASM_ ## x, #x)
#define DEF_WL(x) \
DEF(TOK_ASM_ ## x ## w, #x "w") \
DEF(TOK_ASM_ ## x ## l, #x "l") \
DEF(TOK_ASM_ ## x, #x)
#ifdef TCC_TARGET_X86_64
# define DEF_BWLQ(x) \
DEF(TOK_ASM_ ## x ## b, #x "b") \
DEF(TOK_ASM_ ## x ## w, #x "w") \
DEF(TOK_ASM_ ## x ## l, #x "l") \
DEF(TOK_ASM_ ## x ## q, #x "q") \
DEF(TOK_ASM_ ## x, #x)
# define DEF_WLQ(x) \
DEF(TOK_ASM_ ## x ## w, #x "w") \
DEF(TOK_ASM_ ## x ## l, #x "l") \
DEF(TOK_ASM_ ## x ## q, #x "q") \
DEF(TOK_ASM_ ## x, #x)
# define DEF_BWLX DEF_BWLQ
# define DEF_WLX DEF_WLQ
/* number of sizes + 1 */
# define NBWLX 5
#else
# define DEF_BWLX DEF_BWL
# define DEF_WLX DEF_WL
/* number of sizes + 1 */
# define NBWLX 4
#endif
#define DEF_FP1(x) \
DEF(TOK_ASM_ ## f ## x ## s, "f" #x "s") \