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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
#define _DARWIN_C_SOURCE
#include "config.h"
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
/* gnu headers use to #define __attribute__ to empty for non-gcc compilers */
#ifdef __TINYC__
# undef __attribute__
#endif
#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);
#endif
#ifdef _WIN32
# define WIN32_LEAN_AND_MEAN 1
# include <windows.h>
# include <io.h> /* open, close etc. */
# include <direct.h> /* getcwd */
# include <malloc.h> /* alloca */
# ifdef __GNUC__
# include <stdint.h>
# endif
# define inline __inline
# define snprintf _snprintf
# define vsnprintf _vsnprintf
# ifndef __GNUC__
# define strtold (long double)strtod
# define strtof (float)strtod
# ifdef _WIN64
# define strtoll _strtoi64
# define strtoull _strtoui64
# else
# define strtoll strtol
# define strtoull strtoul
# endif
# endif
# ifdef LIBTCC_AS_DLL
# define LIBTCCAPI __declspec(dllexport)
# define PUB_FUNC LIBTCCAPI
# endif
# define inp next_inp /* inp is an intrinsic on msvc/mingw */
# 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
# ifdef _X86_
# define __i386__ 1
# endif
# ifdef _AMD64_
# define __x86_64__ 1
# endif
# endif
# ifndef va_copy
# define va_copy(a,b) a = b
# endif
# undef CONFIG_TCC_STATIC
#endif
#ifndef PAGESIZE
# ifdef _SC_PAGESIZE
# define PAGESIZE sysconf(_SC_PAGESIZE)
# else
# define PAGESIZE 4096
# endif
#endif
#ifndef O_BINARY
# define O_BINARY 0
#endif
#ifndef offsetof
#define offsetof(type, field) ((size_t) &((type *)0)->field)
#endif
#ifndef countof
#define countof(tab) (sizeof(tab) / sizeof((tab)[0]))
#endif
#ifdef _MSC_VER
# define NORETURN __declspec(noreturn)
# define ALIGNED(x) __declspec(align(x))
# define PRINTF_LIKE(x,y)
#else
# define NORETURN __attribute__((noreturn))
# define ALIGNED(x) __attribute__((aligned(x)))
# define PRINTF_LIKE(x,y) __attribute__ ((format (printf, (x), (y))))
#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
# define PATHSEP ";"
#else
# define IS_DIRSEP(c) (c == '/')
# define IS_ABSPATH(p) IS_DIRSEP(p[0])
# define PATHCMP strcmp
# define PATHSEP ":"
#endif
/* -------------------------------------------- */
/* parser debug */
/* #define PARSE_DEBUG */
/* preprocessor debug */
/* #define PP_DEBUG */
/* include file debug */
/* #define INC_DEBUG */
/* memory leak debug (only for single threaded usage) */
/* #define MEM_DEBUG */
/* assembler debug */
/* #define ASM_DEBUG */
/* target selection */
/* #define TCC_TARGET_I386 *//* i386 code generator */
/* #define TCC_TARGET_X86_64 *//* x86-64 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_RISCV64 *//* risc-v 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) && !defined(TCC_TARGET_RISCV64)
# if defined __x86_64__
# define TCC_TARGET_X86_64
# elif defined __arm__
# define TCC_TARGET_ARM
# define TCC_ARM_EABI
# define TCC_ARM_VFP
# define TCC_ARM_HARDFLOAT
# elif defined __aarch64__
# define TCC_TARGET_ARM64
# elif defined __riscv
# define TCC_TARGET_RISCV64
# else
# define TCC_TARGET_I386
# endif
# ifdef _WIN32
# define TCC_TARGET_PE 1
# endif
# ifdef __APPLE__
# define TCC_TARGET_MACHO 1
# endif
#endif
/* only native compiler supports -run */
#if defined _WIN32 == defined TCC_TARGET_PE \
&& defined __APPLE__ == defined TCC_TARGET_MACHO
# if defined __i386__ && defined TCC_TARGET_I386
# define TCC_IS_NATIVE
# elif defined __x86_64__ && 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
# elif defined __riscv && defined __LP64__ && defined TCC_TARGET_RISCV64
# define TCC_IS_NATIVE
# endif
#endif
#if !defined TCC_IS_NATIVE \
|| (defined CONFIG_TCC_BACKTRACE && CONFIG_TCC_BACKTRACE==0)
# undef CONFIG_TCC_BACKTRACE
#else
# define CONFIG_TCC_BACKTRACE 1 /* enable builtin stack backtraces */
#endif
#if defined CONFIG_TCC_BCHECK && CONFIG_TCC_BCHECK==0
# undef CONFIG_TCC_BCHECK
#else
# define CONFIG_TCC_BCHECK 1 /* enable bound checking code */
#endif
#if defined TARGETOS_OpenBSD \
|| defined TARGETOS_FreeBSD \
|| defined TARGETOS_NetBSD \
|| defined TARGETOS_FreeBSD_kernel
# define TARGETOS_BSD 1
#elif !(defined TCC_TARGET_PE || defined TCC_TARGET_MACHO)
# define TARGETOS_Linux 1
#endif
#if defined TCC_TARGET_PE || defined TCC_TARGET_MACHO
# define ELF_OBJ_ONLY /* create elf .o but native executables */
#endif
/* No ten-byte long doubles on window and macos except in
cross-compilers made by a mingw-GCC */
#if defined TCC_TARGET_PE \
|| (defined TCC_TARGET_MACHO && defined TCC_TARGET_ARM64) \
|| (defined _WIN32 && !defined __GNUC__)
# define TCC_USING_DOUBLE_FOR_LDOUBLE 1
#endif
/* ------------ path configuration ------------ */
#ifndef CONFIG_SYSROOT
# define CONFIG_SYSROOT ""
#endif
#if !defined CONFIG_TCCDIR && !defined _WIN32
# define CONFIG_TCCDIR "/usr/local/lib/tcc"
#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
#ifndef CONFIG_USR_INCLUDE
# define CONFIG_USR_INCLUDE "/usr/include"
#endif
/* Below: {B} is substituted by CONFIG_TCCDIR (rsp. -B option) */
/* system include paths */
#ifndef CONFIG_TCC_SYSINCLUDEPATHS
# if defined TCC_TARGET_PE || defined _WIN32
# define CONFIG_TCC_SYSINCLUDEPATHS "{B}/include"PATHSEP"{B}/include/winapi"
# else
# define CONFIG_TCC_SYSINCLUDEPATHS \
"{B}/include" \
":" ALSO_TRIPLET(CONFIG_SYSROOT "/usr/local/include") \
":" ALSO_TRIPLET(CONFIG_SYSROOT CONFIG_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 TARGETOS_FreeBSD
# define CONFIG_TCC_ELFINTERP "/libexec/ld-elf.so.1"
# elif TARGETOS_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 TARGETOS_DragonFly
# define CONFIG_TCC_ELFINTERP "/usr/libexec/ld-elf.so.2"
# elif TARGETOS_NetBSD
# define CONFIG_TCC_ELFINTERP "/usr/libexec/ld.elf_so"
# elif TARGETOS_OpenBSD
# define CONFIG_TCC_ELFINTERP "/usr/libexec/ld.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
# if defined(TCC_MUSL)
# define CONFIG_TCC_ELFINTERP "/lib/ld-musl-aarch64.so.1"
# else
# define CONFIG_TCC_ELFINTERP "/lib/ld-linux-aarch64.so.1"
# endif
# elif defined(TCC_TARGET_X86_64)
# if defined(TCC_MUSL)
# define CONFIG_TCC_ELFINTERP "/lib/ld-musl-x86_64.so.1"
# else
# define CONFIG_TCC_ELFINTERP "/lib64/ld-linux-x86-64.so.2"
# endif
# elif defined(TCC_TARGET_RISCV64)
# define CONFIG_TCC_ELFINTERP "/lib/ld-linux-riscv64-lp64d.so.1"
# elif !defined(TCC_ARM_EABI)
# if defined(TCC_MUSL)
# if defined(TCC_TARGET_I386)
# define CONFIG_TCC_ELFINTERP "/lib/ld-musl-i386.so.1"
# else
# define CONFIG_TCC_ELFINTERP "/lib/ld-musl-arm.so.1"
# endif
# else
# define CONFIG_TCC_ELFINTERP "/lib/ld-linux.so.2"
# endif
# 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) libtcc1.a */
#ifndef TCC_LIBTCC1
# define TCC_LIBTCC1 "libtcc1.a"
#endif
/* library to use with CONFIG_USE_LIBGCC instead of libtcc1.a */
#if defined CONFIG_USE_LIBGCC && !defined TCC_LIBGCC
#define TCC_LIBGCC USE_TRIPLET(CONFIG_SYSROOT "/" CONFIG_LDDIR) "/libgcc_s.so.1"
#endif
/* -------------------------------------------- */
#include "libtcc.h"
#include "elf.h"
#include "stab.h"
/* -------------------------------------------- */
#ifndef PUB_FUNC /* functions used by tcc.c but not in libtcc.h */
# define PUB_FUNC
#endif
#ifndef ONE_SOURCE
# define ONE_SOURCE 1
#endif
/* support using libtcc from threads */
#ifndef CONFIG_TCC_SEMLOCK
# define CONFIG_TCC_SEMLOCK 1
#endif
#if ONE_SOURCE
#define ST_INLN static inline
#define ST_FUNC static
#define ST_DATA static
#else
#define ST_INLN
#define ST_FUNC
#define ST_DATA extern
#endif
#ifdef TCC_PROFILE /* profile all functions */
# define static
#endif
/* -------------------------------------------- */
/* include the target specific definitions */
#define TARGET_DEFS_ONLY
#ifdef TCC_TARGET_I386
# include "i386-gen.c"
# include "i386-link.c"
#elif defined TCC_TARGET_X86_64
# include "x86_64-gen.c"
# include "x86_64-link.c"
#elif defined TCC_TARGET_ARM
# include "arm-gen.c"
# include "arm-link.c"
# include "arm-asm.c"
#elif defined TCC_TARGET_ARM64
# include "arm64-gen.c"
# include "arm64-link.c"
# include "arm-asm.c"
#elif defined TCC_TARGET_C67
# define TCC_TARGET_COFF
# include "coff.h"
# include "c67-gen.c"
# include "c67-link.c"
#elif defined(TCC_TARGET_RISCV64)
# include "riscv64-gen.c"
# include "riscv64-link.c"
# include "riscv64-asm.c"
#else
#error unknown target
#endif
#undef TARGET_DEFS_ONLY
/* -------------------------------------------- */
#if PTR_SIZE == 8
# 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)
#define ElfSym ElfW(Sym)
#if PTR_SIZE == 8 && !defined TCC_TARGET_PE
# define LONG_SIZE 8
#else
# define LONG_SIZE 4
#endif
/* -------------------------------------------- */
#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 {
const void *data;
int size;
} 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 */
union {
struct { int jtrue, jfalse; }; /* forward jmps */
CValue c; /* constant, if VT_CONST */
};
union {
struct { unsigned short cmp_op, cmp_r; }; /* VT_CMP operation */
struct Sym *sym; /* symbol, if (VT_SYM | VT_CONST), or if */
}; /* result of unary() for an identifier. */
} SValue;
/* symbol attributes */
struct SymAttr {
unsigned short
aligned : 5, /* alignment as log2+1 (0 == unspecified) */
packed : 1,
weak : 1,
visibility : 2,
dllexport : 1,
nodecorate : 1,
dllimport : 1,
addrtaken : 1,
xxxx : 3; /* not used */
};
/* function attributes or temporary attributes for parsing */
struct FuncAttr {
unsigned
func_call : 3, /* calling convention (0..5), see below */
func_type : 2, /* FUNC_OLD/NEW/ELLIPSIS */
func_noreturn : 1, /* attribute((noreturn)) */
func_ctor : 1, /* attribute((constructor)) */
func_dtor : 1, /* attribute((destructor)) */
func_args : 8, /* PE __stdcall args */
func_alwinl : 1, /* always_inline */
xxxx : 15;
};
/* symbol management */
typedef struct Sym {
int v; /* symbol token */
unsigned short r; /* associated register or VT_CONST/VT_LOCAL and LVAL type */
struct SymAttr a; /* symbol attributes */
union {
struct {
int c; /* associated number or Elf symbol index */
union {
int sym_scope; /* scope level for locals */
int jnext; /* next jump label */
struct FuncAttr f; /* function attributes */
int auxtype; /* bitfield access type */
};
};
long long enum_val; /* enum constant if IS_ENUM_VAL */
int *d; /* define token stream */
struct Sym *ncl; /* next cleanup */
};
CType type; /* associated type */
union {
struct Sym *next; /* next related symbol (for fields and anoms) */
struct Sym *cleanupstate; /* in defined labels */
int asm_label; /* associated asm label */
};
struct Sym *prev; /* prev symbol in stack */
struct Sym *prev_tok; /* previous symbol for this token */
} Sym;
/* section definition */
typedef struct Section {
unsigned long data_offset; /* current data offset */
unsigned char *data; /* section data */
unsigned long data_allocated; /* used for realloc() handling */
TCCState *s1;
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;
/* -------------------------------------------------- */
#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 */
/* stored in 'Sym->f.func_type' 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->f.func_call' 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 */
#define LABEL_GONE 3 /* label isn't in scope, but not yet popped
from local_label_stack (stmt exprs) */
/* 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 */
char *true_filename; /* filename not modified by # line directive */
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 */
/* used to record tokens */
typedef struct TokenString {
int *str;
int len;
int lastlen;
int allocated_len;
int last_line_num;
int save_line_num;
/* used to chain token-strings with begin/end_macro() */
struct TokenString *prev;
const int *prev_ptr;
char alloc;
} TokenString;
/* GNUC attribute definition */
typedef struct AttributeDef {
struct SymAttr a;
struct FuncAttr f;
struct Section *section;
Sym *cleanup_func;
int alias_target; /* token */
int asm_label; /* associated asm label */
char attr_mode; /* __attribute__((__mode__(...))) */
} AttributeDef;
/* 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 optional 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 {
unsigned char verbose; /* if true, display some information during compilation */
unsigned char nostdinc; /* if true, no standard headers are added */
unsigned char nostdlib; /* if true, no standard libraries are added */
unsigned char nocommon; /* if true, do not use common symbols for .bss data */
unsigned char static_link; /* if true, static linking is performed */
unsigned char rdynamic; /* if true, all symbols are exported */
unsigned char symbolic; /* if true, resolve symbols in the current module first */
unsigned char filetype; /* file type for compilation (NONE,C,ASM) */
unsigned char optimize; /* only to #define __OPTIMIZE__ */
unsigned char option_pthread; /* -pthread option */
unsigned char enable_new_dtags; /* -Wl,--enable-new-dtags */
unsigned int cversion; /* supported C ISO version, 199901 (the default), 201112, ... */
/* C language options */
unsigned char char_is_unsigned;
unsigned char leading_underscore;
unsigned char ms_extensions; /* allow nested named struct w/o identifier behave like unnamed */
unsigned char dollars_in_identifiers; /* allows '$' char in identifiers */
unsigned char ms_bitfields; /* if true, emulate MS algorithm for aligning bitfields */
/* warning switches */
unsigned char warn_none;
unsigned char warn_all;
unsigned char warn_error;
unsigned char warn_write_strings;
unsigned char warn_unsupported;
unsigned char warn_implicit_function_declaration;
unsigned char warn_discarded_qualifiers;
#define WARN_ON 1 /* warning is on (-Woption) */
unsigned char warn_num; /* temp var for tcc_warning_c() */
unsigned char option_r; /* option -r */
unsigned char do_bench; /* option -bench */
unsigned char just_deps; /* option -M */
unsigned char gen_deps; /* option -MD */
unsigned char include_sys_deps; /* option -MD */
/* compile with debug symbol (and use them if error during execution) */
unsigned char do_debug;
unsigned char do_backtrace;
#ifdef CONFIG_TCC_BCHECK
/* compile with built-in memory and bounds checker */
unsigned char do_bounds_check;
#endif
unsigned char test_coverage; /* generate test coverage code */
/* use GNU C extensions */
unsigned char gnu_ext;
/* use TinyCC extensions */
unsigned char tcc_ext;
unsigned char dflag; /* -dX value */
unsigned char Pflag; /* -P switch (LINE_MACRO_OUTPUT_FORMAT) */
#ifdef TCC_TARGET_X86_64
unsigned char nosse; /* For -mno-sse support. */
#endif
#ifdef TCC_TARGET_ARM
unsigned char float_abi; /* float ABI of the generated code*/
#endif
unsigned char has_text_addr;
addr_t text_addr; /* address of text section */
unsigned section_align; /* section alignment */
#ifdef TCC_TARGET_I386
int seg_size; /* 32. Can be 16 with i386 assembler (.code16) */
#endif
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=) */
char *init_symbol; /* symbols to call at load-time (not used currently) */
char *fini_symbol; /* symbols to call at unload-time (not used currently) */
/* output type, see TCC_OUTPUT_XXX */
int output_type;
/* output format, see TCC_OUTPUT_FORMAT_xxx */
int output_format;
/* nth test to run with -dt -run */
int run_test;
/* 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;
/* -D / -U options */
CString cmdline_defs;
/* -include options */
CString cmdline_incl;
/* 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;
/* 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;
/* predefined sections */
Section *text_section, *data_section, *rodata_section, *bss_section;
Section *common_section;
Section *cur_text_section; /* current section where function code is generated */
#ifdef CONFIG_TCC_BCHECK
/* bound check related sections */
Section *bounds_section; /* contains global data bound description */
Section *lbounds_section; /* contains local data bound description */
#endif
/* test coverage */
Section *tcov_section;
/* symbol sections */
Section *symtab_section;
/* debug sections */
Section *stab_section;
/* Is there a new undefined sym since last new_undef_sym() */
int new_undef_sym;
/* temporary dynamic symbol sections (for dll loading) */
Section *dynsymtab_section;
/* exported dynamic symbol section */
Section *dynsym;
/* copy of the global symtab_section variable */
Section *symtab;
/* extra attributes (eg. GOT/PLT value) for symtab symbols */
struct sym_attr *sym_attrs;
int nb_sym_attrs;
/* ptr to next reloc entry reused */
ElfW_Rel *qrel;
#define qrel s1->qrel
#ifdef TCC_TARGET_RISCV64
struct pcrel_hi { addr_t addr, val; } last_hi;
#define last_hi s1->last_hi
#endif
#ifdef TCC_TARGET_PE
/* PE info */
int pe_subsystem;
unsigned pe_characteristics;
unsigned pe_file_align;
unsigned pe_stack_size;
addr_t pe_imagebase;
# ifdef TCC_TARGET_X86_64
Section *uw_pdata;
int uw_sym;
unsigned uw_offs;
# endif
#endif
#ifndef ELF_OBJ_ONLY
int nb_sym_versions;
struct sym_version *sym_versions;
int nb_sym_to_version;
int *sym_to_version;
int dt_verneednum;
Section *versym_section;
Section *verneed_section;
#endif
#ifdef TCC_IS_NATIVE
const char *runtime_main;
void **runtime_mem;
int nb_runtime_mem;
#endif
#ifdef CONFIG_TCC_BACKTRACE
int rt_num_callers;
#endif
/* benchmark info */
int total_idents;
int total_lines;
int total_bytes;
int total_output[4];
/* option -dnum (for general development purposes) */
int g_debug;
/* used by tcc_load_ldscript */
int fd, cc;
/* for warnings/errors for object files */
const char *current_filename;
/* 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 */
char *outfile; /* output filename */
char *deps_outfile; /* option -MF */
int argc;
char **argv;
};
struct filespec {
char type;
char name[1];
};