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  __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     #define __RUNETYPE_INTERNAL 1
  92 # if __SIZEOF_POINTER__ == 8
  93     /* FIXME, __int128_t is used by setjump */
  94     #define __int128_t struct { unsigned char _dummy[16] __attribute((aligned(16))); }
  95     #define __SIZEOF_SIZE_T__ 8
  96     #define __SIZEOF_PTRDIFF_T__ 8
  97 #else
  98     #define __SIZEOF_SIZE_T__ 4
  99     #define __SIZEOF_PTRDIFF_T__ 4
 100 # endif
 101
 102 #elif defined __FreeBSD_kernel__
 103
 104 #elif defined __NetBSD__
 105     #define __GNUC__ 4
 106     #define __GNUC_MINOR__ 1
 107     #define __GNUC_PATCHLEVEL__ 0
 108     #define _Pragma(x)
 109     #define __ELF__ 1
 110 #if defined __aarch64__
 111     #define _LOCORE /* avoids usage of __asm */
 112 #endif
 113
 114 #elif defined __OpenBSD__
 115     #define __GNUC__ 4
 116     #define _ANSI_LIBRARY 1
 117
 118 #elif defined __APPLE__
 119     /* emulate APPLE-GCC to make libc's headerfiles compile: */
 120     #define __GNUC__ 4   /* darwin emits warning on GCC<4 */
 121     #define __APPLE_CC__ 1 /* for <TargetConditionals.h> */
 122     #define __LITTLE_ENDIAN__ 1
 123     #define _DONT_USE_CTYPE_INLINE_ 1
 124     /* avoids usage of GCC/clang specific builtins in libc-headerfiles: */
 125     #define __FINITE_MATH_ONLY__ 1
 126     #define _FORTIFY_SOURCE 0
 127     //#define __has_builtin(x) 0
 128
 129 #elif defined __ANDROID__
 130     #define  BIONIC_IOCTL_NO_SIGNEDNESS_OVERLOAD
 131
 132 #else
 133     /* Linux */
 134
 135 #endif
 136
 137     /* Some derived integer types needed to get stdint.h to compile correctly on some platforms */
 138 #ifndef __NetBSD__
 139     #define __UINTPTR_TYPE__ unsigned __PTRDIFF_TYPE__
 140     #define __INTPTR_TYPE__ __PTRDIFF_TYPE__
 141 #endif
 142     #define __INT32_TYPE__ int
 143
 144 #if !defined _WIN32
 145     /* glibc defines. We do not support __USER_NAME_PREFIX__ */
 146     #define __REDIRECT(name, proto, alias) name proto __asm__ (#alias)
 147     #define __REDIRECT_NTH(name, proto, alias) name proto __asm__ (#alias) __THROW
 148     #define __REDIRECT_NTHNL(name, proto, alias) name proto __asm__ (#alias) __THROWNL
 149 #endif
 150
 151     /* not implemented */
 152     #define  __PRETTY_FUNCTION__ __FUNCTION__
 153     #define __has_builtin(x) 0
 154     #define __has_feature(x) 0
 155     /* C23 Keywords */
 156     #define _Nonnull
 157     #define _Nullable
 158     #define _Nullable_result
 159     #define _Null_unspecified
 160
 161     /* skip __builtin... with -E */
 162     #ifndef __TCC_PP__
 163
 164     #define __builtin_offsetof(type, field) ((__SIZE_TYPE__)&((type*)0)->field)
 165     #define __builtin_extract_return_addr(x) x
 166 #if !defined __linux__ && !defined _WIN32
 167     /* used by math.h */
 168     #define __builtin_huge_val() 1e500
 169     #define __builtin_huge_valf() 1e50f
 170     #define __builtin_huge_vall() 1e5000L
 171 # if defined __APPLE__
 172     #define __builtin_nanf(ignored_string) (0.0F/0.0F)
 173     /* used by floats.h to implement FLT_ROUNDS C99 macro. 1 == to nearest */
 174     #define __builtin_flt_rounds() 1
 175     /* used by _fd_def.h */
 176     #define __builtin_bzero(p, ignored_size) bzero(p, sizeof(*(p)))
 177 # else
 178     #define __builtin_nanf(ignored_string) (0.0F/0.0F)
 179 # endif
 180 #endif
 181
 182     /* __builtin_va_list */
 183 #if defined __x86_64__
 184 #if !defined _WIN32
 185     /* GCC compatible definition of va_list. */
 186     /* This should be in sync with the declaration in our lib/libtcc1.c */
 187     typedef struct {
 188         unsigned gp_offset, fp_offset;
 189         union {
 190             unsigned overflow_offset;
 191             char *overflow_arg_area;
 192         };
 193         char *reg_save_area;
 194     } __builtin_va_list[1];
 195
 196     void *__va_arg(__builtin_va_list ap, int arg_type, int size, int align);
 197     #define __builtin_va_start(ap, last) \
 198        (*(ap) = *(__builtin_va_list)((char*)__builtin_frame_address(0) - 24))
 199     #define __builtin_va_arg(ap, t)   \
 200        (*(t *)(__va_arg(ap, __builtin_va_arg_types(t), sizeof(t), __alignof__(t))))
 201     #define __builtin_va_copy(dest, src) (*(dest) = *(src))
 202
 203 #else /* _WIN64 */
 204     typedef char *__builtin_va_list;
 205     #define __builtin_va_arg(ap, t) ((sizeof(t) > 8 || (sizeof(t) & (sizeof(t) - 1))) \
 206         ? **(t **)((ap += 8) - 8) : *(t  *)((ap += 8) - 8))
 207 #endif
 208
 209 #elif defined __arm__
 210     typedef char *__builtin_va_list;
 211     #define _tcc_alignof(type) ((int)&((struct {char c;type x;} *)0)->x)
 212     #define _tcc_align(addr,type) (((unsigned)addr + _tcc_alignof(type) - 1) \
 213                                   & ~(_tcc_alignof(type) - 1))
 214     #define __builtin_va_start(ap,last) (ap = ((char *)&(last)) + ((sizeof(last)+3)&~3))
 215     #define __builtin_va_arg(ap,type) (ap = (void *) ((_tcc_align(ap,type)+sizeof(type)+3) \
 216                            &~3), *(type *)(ap - ((sizeof(type)+3)&~3)))
 217
 218 #elif defined __aarch64__
 219 #if defined __APPLE__
 220     typedef struct {
 221         void *__stack;
 222     } __builtin_va_list;
 223
 224 #else
 225     typedef struct {
 226         void *__stack, *__gr_top, *__vr_top;
 227         int   __gr_offs, __vr_offs;
 228     } __builtin_va_list;
 229
 230 #endif
 231 #elif defined __riscv
 232     typedef char *__builtin_va_list;
 233     #define __va_reg_size (__riscv_xlen >> 3)
 234     #define _tcc_align(addr,type) (((unsigned long)addr + __alignof__(type) - 1) \
 235                                   & -(__alignof__(type)))
 236     #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)))))
 237
 238 #else /* __i386__ */
 239     typedef char *__builtin_va_list;
 240     #define __builtin_va_start(ap,last) (ap = ((char *)&(last)) + ((sizeof(last)+3)&~3))
 241     #define __builtin_va_arg(ap,t) (*(t*)((ap+=(sizeof(t)+3)&~3)-((sizeof(t)+3)&~3)))
 242
 243 #endif
 244     #define __builtin_va_end(ap) (void)(ap)
 245     #ifndef __builtin_va_copy
 246     # define __builtin_va_copy(dest, src) (dest) = (src)
 247     #endif
 248
 249     /* TCC BBUILTIN AND BOUNDS ALIASES */
 250     #ifdef __leading_underscore
 251     # define __RENAME(X) __asm__("_"X)
 252     #else
 253     # define __RENAME(X) __asm__(X)
 254     #endif
 255
 256     #ifdef __TCC_BCHECK__
 257     # define __BUILTINBC(ret,name,params) ret __builtin_##name params __RENAME("__bound_"#name);
 258     # define __BOUND(ret,name,params) ret name params __RENAME("__bound_"#name);
 259     #else
 260     # define __BUILTINBC(ret,name,params) ret __builtin_##name params __RENAME(#name);
 261     # define __BOUND(ret,name,params)
 262     #endif
 263 #ifdef _WIN32
 264     #define __BOTH __BOUND
 265     #define __BUILTIN(ret,name,params)
 266 #else
 267     #define __BOTH(ret,name,params) __BUILTINBC(ret,name,params)__BOUND(ret,name,params)
 268     #define __BUILTIN(ret,name,params) ret __builtin_##name params __RENAME(#name);
 269 #endif
 270
 271     __BOTH(void*, memcpy, (void *, const void*, __SIZE_TYPE__))
 272     __BOTH(void*, memmove, (void *, const void*, __SIZE_TYPE__))
 273     __BOTH(void*, memset, (void *, int, __SIZE_TYPE__))
 274     __BOTH(int, memcmp, (const void *, const void*, __SIZE_TYPE__))
 275     __BOTH(__SIZE_TYPE__, strlen, (const char *))
 276     __BOTH(char*, strcpy, (char *, const char *))
 277     __BOTH(char*, strncpy, (char *, const char*, __SIZE_TYPE__))
 278     __BOTH(int, strcmp, (const char*, const char*))
 279     __BOTH(int, strncmp, (const char*, const char*, __SIZE_TYPE__))
 280     __BOTH(char*, strcat, (char*, const char*))
 281     __BOTH(char*, strncat, (char*, const char*, __SIZE_TYPE__))
 282     __BOTH(char*, strchr, (const char*, int))
 283     __BOTH(char*, strrchr, (const char*, int))
 284     __BOTH(char*, strdup, (const char*))
 285 #if defined __ARM_EABI__
 286     __BOUND(void*,__aeabi_memcpy,(void*,const void*,__SIZE_TYPE__))
 287     __BOUND(void*,__aeabi_memmove,(void*,const void*,__SIZE_TYPE__))
 288     __BOUND(void*,__aeabi_memmove4,(void*,const void*,__SIZE_TYPE__))
 289     __BOUND(void*,__aeabi_memmove8,(void*,const void*,__SIZE_TYPE__))
 290     __BOUND(void*,__aeabi_memset,(void*,int,__SIZE_TYPE__))
 291 #endif
 292
 293 #if defined __linux__ || defined __APPLE__ // HAVE MALLOC_REDIR
 294     #define __MAYBE_REDIR __BUILTIN
 295 #else
 296     #define __MAYBE_REDIR __BOTH
 297 #endif
 298     __MAYBE_REDIR(void*, malloc, (__SIZE_TYPE__))
 299     __MAYBE_REDIR(void*, realloc, (void *, __SIZE_TYPE__))
 300     __MAYBE_REDIR(void*, calloc, (__SIZE_TYPE__, __SIZE_TYPE__))
 301     __MAYBE_REDIR(void*, memalign, (__SIZE_TYPE__, __SIZE_TYPE__))
 302     __MAYBE_REDIR(void, free, (void*))
 303 #if defined __i386__ || defined __x86_64__
 304     __BOTH(void*, alloca, (__SIZE_TYPE__))
 305 #else
 306     __BUILTIN(void*, alloca, (__SIZE_TYPE__))
 307 #endif
 308     __BUILTIN(void, abort, (void))
 309     __BOUND(void, longjmp, ())
 310 #if !defined _WIN32
 311     __BOUND(void*, mmap, ())
 312     __BOUND(int, munmap, ())
 313 #endif
 314     #undef __BUILTINBC
 315     #undef __BUILTIN
 316     #undef __BOUND
 317     #undef __BOTH
 318     #undef __MAYBE_REDIR
 319     #undef __RENAME
 320
 321     #define __BUILTIN_EXTERN(name,u)            \
 322         int __builtin_##name(u int);            \
 323         int __builtin_##name##l(u long);        \
 324         int __builtin_##name##ll(u long long);
 325     __BUILTIN_EXTERN(ffs,)
 326     __BUILTIN_EXTERN(clz, unsigned)
 327     __BUILTIN_EXTERN(ctz, unsigned)
 328     __BUILTIN_EXTERN(clrsb,)
 329     __BUILTIN_EXTERN(popcount, unsigned)
 330     __BUILTIN_EXTERN(parity, unsigned)
 331     #undef __BUILTIN_EXTERN
 332
 333     #endif /* ndef __TCC_PP__ */