include/tccdefs.h

   1 /*  tccdefs.h
   2
   3     Nothing is defined before this file except target machine, target os
   4     and the few things related to option settings in tccpp.c:tcc_predefs().
   5
   6     This file is either included at runtime as is, or converted and
   7     included as C-strings at compile-time (depending on CONFIG_TCC_PREDEFS).
   8
   9     Note that line indent matters:
  10
  11     - in lines starting at column 1, platform macros are replaced by
  12       corresponding TCC target compile-time macros.  See conftest.c for
  13       the list of platform macros supported in lines starting at column 1.
  14
  15     - only lines indented >= 4 are actually included into the executable,
  16       check tccdefs_.h.
  17 */
  18
  19 #if __SIZEOF_POINTER__ == 4
  20     /* 32bit systems. */
  21 #if defined TARGETOS_OpenBSD
  22     #define __SIZE_TYPE__ unsigned long
  23     #define __PTRDIFF_TYPE__ long
  24 #else
  25     #define __SIZE_TYPE__ unsigned int
  26     #define __PTRDIFF_TYPE__ int
  27 #endif
  28     #define __ILP32__ 1
  29     #define __INT64_TYPE__ long long
  30 #elif __SIZEOF_LONG__ == 4
  31     /* 64bit Windows. */
  32     #define __SIZE_TYPE__ unsigned long long
  33     #define __PTRDIFF_TYPE__ long long
  34     #define __LLP64__ 1
  35     #define __INT64_TYPE__ long long
  36 #else
  37     /* Other 64bit systems. */
  38     #define __SIZE_TYPE__ unsigned long
  39     #define __PTRDIFF_TYPE__ long
  40     #define __LP64__ 1
  41 # if defined __linux__
  42     #define __INT64_TYPE__ long
  43 # else /* APPLE, BSD */
  44     #define __INT64_TYPE__ long long
  45 # endif
  46 #endif
  47     #define __SIZEOF_INT__ 4
  48     #define __INT_MAX__ 0x7fffffff
  49 #if __SIZEOF_LONG__ == 4
  50     #define __LONG_MAX__ 0x7fffffffL
  51 #else
  52     #define __LONG_MAX__ 0x7fffffffffffffffL
  53 #endif
  54     #define __SIZEOF_LONG_LONG__ 8
  55     #define __LONG_LONG_MAX__ 0x7fffffffffffffffLL
  56     #define __CHAR_BIT__ 8
  57     #define __ORDER_LITTLE_ENDIAN__ 1234
  58     #define __ORDER_BIG_ENDIAN__ 4321
  59     #define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__
  60 #if defined _WIN32
  61     #define __WCHAR_TYPE__ unsigned short
  62     #define __WINT_TYPE__ unsigned short
  63 #elif defined __linux__
  64     #define __WCHAR_TYPE__ int
  65     #define __WINT_TYPE__ unsigned int
  66 #else
  67     #define __WCHAR_TYPE__ int
  68     #define __WINT_TYPE__ int
  69 #endif
  70
  71     #if __STDC_VERSION__ == 201112L
  72     # define __STDC_NO_ATOMICS__ 1
  73     # define __STDC_NO_COMPLEX__ 1
  74     # define __STDC_NO_THREADS__ 1
  75 #if !defined _WIN32
  76     # define __STDC_UTF_16__ 1
  77     # define __STDC_UTF_32__ 1
  78 #endif
  79     #endif
  80
  81 #if defined _WIN32
  82     #define __declspec(x) __attribute__((x))
  83     #define __cdecl
  84
  85 #elif defined __FreeBSD__
  86     #define __GNUC__ 9
  87     #define __GNUC_MINOR__ 3
  88     #define __GNUC_PATCHLEVEL__ 0
  89     #define __GNUC_STDC_INLINE__ 1
  90     #define __NO_TLS 1
  91 # if __SIZEOF_POINTER__ == 8
  92     /* FIXME, __int128_t is used by setjump */
  93     #define __int128_t struct { unsigned char _dummy[16] __attribute((aligned(16))); }
  94 # endif
  95
  96 #elif defined __FreeBSD_kernel__
  97
  98 #elif defined __NetBSD__
  99     #define __GNUC__ 4
 100     #define __GNUC_MINOR__ 1
 101     #define __GNUC_PATCHLEVEL__ 0
 102     #define _Pragma(x)
 103     #define __ELF__ 1
 104 #if defined __aarch64__
 105     #define _LOCORE /* avoids usage of __asm */
 106 #endif
 107
 108 #elif defined __OpenBSD__
 109     #define __GNUC__ 4
 110     #define _ANSI_LIBRARY 1
 111
 112 #elif defined __APPLE__
 113     /* emulate APPLE-GCC to make libc's headerfiles compile: */
 114     #define __GNUC__ 4   /* darwin emits warning on GCC<4 */
 115     #define __APPLE_CC__ 1 /* for <TargetConditionals.h> */
 116     #define _DONT_USE_CTYPE_INLINE_ 1
 117     /* avoids usage of GCC/clang specific builtins in libc-headerfiles: */
 118     #define __FINITE_MATH_ONLY__ 1
 119     #define _FORTIFY_SOURCE 0
 120
 121 #else
 122     /* Linux */
 123
 124 #endif
 125     /* Some derived integer types needed to get stdint.h to compile correctly on some platforms */
 126 #ifndef __NetBSD__
 127     #define __UINTPTR_TYPE__ unsigned __PTRDIFF_TYPE__
 128     #define __INTPTR_TYPE__ __PTRDIFF_TYPE__
 129 #endif
 130     #define __INT32_TYPE__ int
 131
 132 #if !defined _WIN32
 133     /* glibc defines */
 134     #define __REDIRECT(name, proto, alias) name proto __asm__ (#alias)
 135     #define __REDIRECT_NTH(name, proto, alias) name proto __asm__ (#alias) __THROW
 136 #endif
 137
 138     /* skip __builtin... with -E */
 139     #ifndef __TCC_PP__
 140
 141     #define __builtin_offsetof(type, field) ((__SIZE_TYPE__)&((type*)0)->field)
 142     #define __builtin_extract_return_addr(x) x
 143 #if !defined __linux__ && !defined _WIN32
 144     /* used by math.h */
 145     #define __builtin_huge_val() 1e500
 146     #define __builtin_huge_valf() 1e50f
 147     #define __builtin_huge_vall() 1e5000L
 148 # if defined __APPLE__
 149     #define __builtin_nanf(ignored_string) __nan()
 150     /* used by floats.h to implement FLT_ROUNDS C99 macro. 1 == to nearest */
 151     #define __builtin_flt_rounds() 1
 152     /* used by _fd_def.h */
 153     #define __builtin_bzero(p, ignored_size) bzero(p, sizeof(*(p)))
 154 # else
 155     #define __builtin_nanf(ignored_string) (0.0F/0.0F)
 156 # endif
 157 #endif
 158
 159     /* __builtin_va_list */
 160 #if defined __x86_64__
 161 #if !defined _WIN32
 162     /* GCC compatible definition of va_list. */
 163     /* This should be in sync with the declaration in our lib/libtcc1.c */
 164     typedef struct {
 165         unsigned gp_offset, fp_offset;
 166         union {
 167             unsigned overflow_offset;
 168             char *overflow_arg_area;
 169         };
 170         char *reg_save_area;
 171     } __builtin_va_list[1];
 172
 173     void *__va_arg(__builtin_va_list ap, int arg_type, int size, int align);
 174     #define __builtin_va_start(ap, last) \
 175        (*(ap) = *(__builtin_va_list)((char*)__builtin_frame_address(0) - 24))
 176     #define __builtin_va_arg(ap, t)   \
 177        (*(t *)(__va_arg(ap, __builtin_va_arg_types(t), sizeof(t), __alignof__(t))))
 178     #define __builtin_va_copy(dest, src) (*(dest) = *(src))
 179
 180 #else /* _WIN64 */
 181     typedef char *__builtin_va_list;
 182     #define __builtin_va_arg(ap, t) ((sizeof(t) > 8 || (sizeof(t) & (sizeof(t) - 1))) \
 183         ? **(t **)((ap += 8) - 8) : *(t  *)((ap += 8) - 8))
 184 #endif
 185
 186 #elif defined __arm__
 187     typedef char *__builtin_va_list;
 188     #define _tcc_alignof(type) ((int)&((struct {char c;type x;} *)0)->x)
 189     #define _tcc_align(addr,type) (((unsigned)addr + _tcc_alignof(type) - 1) \
 190                                   & ~(_tcc_alignof(type) - 1))
 191     #define __builtin_va_start(ap,last) (ap = ((char *)&(last)) + ((sizeof(last)+3)&~3))
 192     #define __builtin_va_arg(ap,type) (ap = (void *) ((_tcc_align(ap,type)+sizeof(type)+3) \
 193                            &~3), *(type *)(ap - ((sizeof(type)+3)&~3)))
 194
 195 #elif defined __aarch64__
 196     typedef struct {
 197         void *__stack, *__gr_top, *__vr_top;
 198         int   __gr_offs, __vr_offs;
 199     } __builtin_va_list;
 200
 201 #elif defined __riscv
 202     typedef char *__builtin_va_list;
 203     #define __va_reg_size (__riscv_xlen >> 3)
 204     #define _tcc_align(addr,type) (((unsigned long)addr + __alignof__(type) - 1) \
 205                                   & -(__alignof__(type)))
 206     #define __builtin_va_arg(ap,type) (*(sizeof(type) > (2*__va_reg_size) ? *(type **)((ap += __va_reg_size) - __va_reg_size) : (ap = (va_list)(_tcc_align(ap,type) + (sizeof(type)+__va_reg_size - 1)& -__va_reg_size), (type *)(ap - ((sizeof(type)+ __va_reg_size - 1)& -__va_reg_size)))))
 207
 208 #else /* __i386__ */
 209     typedef char *__builtin_va_list;
 210     #define __builtin_va_start(ap,last) (ap = ((char *)&(last)) + ((sizeof(last)+3)&~3))
 211     #define __builtin_va_arg(ap,t) (*(t*)((ap+=(sizeof(t)+3)&~3)-((sizeof(t)+3)&~3)))
 212
 213 #endif
 214     #define __builtin_va_end(ap) (void)(ap)
 215     #ifndef __builtin_va_copy
 216     # define __builtin_va_copy(dest, src) (dest) = (src)
 217     #endif
 218
 219     /* TCC BBUILTIN AND BOUNDS ALIASES */
 220     #ifdef __leading_underscore
 221     # define __RENAME(X) __asm__("_"X)
 222     #else
 223     # define __RENAME(X) __asm__(X)
 224     #endif
 225
 226     #ifdef __BOUNDS_CHECKING_ON
 227     # define __BUILTINBC(ret,name,params) ret __builtin_##name params __RENAME("__bound_"#name);
 228     # define __BOUND(ret,name,params) ret name params __RENAME("__bound_"#name);
 229     #else
 230     # define __BUILTINBC(ret,name,params) ret __builtin_##name params __RENAME(#name);
 231     # define __BOUND(ret,name,params)
 232     #endif
 233 #ifdef _WIN32
 234     #define __BOTH __BOUND
 235     #define __BUILTIN(ret,name,params)
 236 #else
 237     #define __BOTH(ret,name,params) __BUILTINBC(ret,name,params)__BOUND(ret,name,params)
 238     #define __BUILTIN(ret,name,params) ret __builtin_##name params __RENAME(#name);
 239 #endif
 240
 241     __BOTH(void*, memcpy, (void *, const void*, __SIZE_TYPE__))
 242     __BOTH(void*, memmove, (void *, const void*, __SIZE_TYPE__))
 243     __BOTH(void*, memset, (void *, int, __SIZE_TYPE__))
 244     __BOTH(int, memcmp, (const void *, const void*, __SIZE_TYPE__))
 245     __BOTH(__SIZE_TYPE__, strlen, (const char *))
 246     __BOTH(char*, strcpy, (char *, const char *))
 247     __BOTH(char*, strncpy, (char *, const char*, __SIZE_TYPE__))
 248     __BOTH(int, strcmp, (const char*, const char*))
 249     __BOTH(int, strncmp, (const char*, const char*, __SIZE_TYPE__))
 250     __BOTH(char*, strcat, (char*, const char*))
 251     __BOTH(char*, strchr, (const char*, int))
 252     __BOTH(char*, strdup, (const char*))
 253 #if defined __ARM_EABI__
 254     __BOUND(void*,__aeabi_memcpy,(void*,const void*,__SIZE_TYPE__))
 255     __BOUND(void*,__aeabi_memmove,(void*,const void*,__SIZE_TYPE__))
 256     __BOUND(void*,__aeabi_memmove4,(void*,const void*,__SIZE_TYPE__))
 257     __BOUND(void*,__aeabi_memmove8,(void*,const void*,__SIZE_TYPE__))
 258     __BOUND(void*,__aeabi_memset,(void*,int,__SIZE_TYPE__))
 259 #endif
 260
 261 #if defined __linux__ || defined __APPLE__ // HAVE MALLOC_REDIR
 262     #define __MAYBE_REDIR __BUILTIN
 263 #else
 264     #define __MAYBE_REDIR __BOTH
 265 #endif
 266     __MAYBE_REDIR(void*, malloc, (__SIZE_TYPE__))
 267     __MAYBE_REDIR(void*, realloc, (void *, __SIZE_TYPE__))
 268     __MAYBE_REDIR(void*, calloc, (__SIZE_TYPE__, __SIZE_TYPE__))
 269     __MAYBE_REDIR(void*, memalign, (__SIZE_TYPE__, __SIZE_TYPE__))
 270     __MAYBE_REDIR(void, free, (void*))
 271 #if defined __i386__ || defined __x86_64__
 272     __BOTH(void*, alloca, (__SIZE_TYPE__))
 273 #else
 274     __BUILTIN(void*, alloca, (__SIZE_TYPE__))
 275 #endif
 276     __BUILTIN(void, abort, (void))
 277     __BOUND(void, longjmp, ())
 278 #if !defined _WIN32
 279     __BOUND(void*, mmap, ())
 280     __BOUND(int, munmap, ())
 281 #endif
 282     #undef __BUILTINBC
 283     #undef __BUILTIN
 284     #undef __BOUND
 285     #undef __BOTH
 286     #undef __MAYBE_REDIR
 287     #undef __RENAME
 288
 289     #endif /* ndef __TCC_PP__ */