1 // android -- copy of liffi.h.in with '@' values replaced 2 /* -----------------------------------------------------------------*-C-*- 3 libffi @VERSION@ - Copyright (c) 1996-2003, 2007, 2008 Red Hat, Inc. 4 5 Permission is hereby granted, free of charge, to any person obtaining 6 a copy of this software and associated documentation files (the 7 ``Software''), to deal in the Software without restriction, including 8 without limitation the rights to use, copy, modify, merge, publish, 9 distribute, sublicense, and/or sell copies of the Software, and to 10 permit persons to whom the Software is furnished to do so, subject to 11 the following conditions: 12 13 The above copyright notice and this permission notice shall be included 14 in all copies or substantial portions of the Software. 15 16 THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, 17 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 18 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 19 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 20 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 21 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 23 DEALINGS IN THE SOFTWARE. 24 25 ----------------------------------------------------------------------- */ 26 27 /* ------------------------------------------------------------------- 28 The basic API is described in the README file. 29 30 The raw API is designed to bypass some of the argument packing 31 and unpacking on architectures for which it can be avoided. 32 33 The closure API allows interpreted functions to be packaged up 34 inside a C function pointer, so that they can be called as C functions, 35 with no understanding on the client side that they are interpreted. 36 It can also be used in other cases in which it is necessary to package 37 up a user specified parameter and a function pointer as a single 38 function pointer. 39 40 The closure API must be implemented in order to get its functionality, 41 e.g. for use by gij. Routines are provided to emulate the raw API 42 if the underlying platform doesn't allow faster implementation. 43 44 More details on the raw and cloure API can be found in: 45 46 http://gcc.gnu.org/ml/java/1999-q3/msg00138.html 47 48 and 49 50 http://gcc.gnu.org/ml/java/1999-q3/msg00174.html 51 -------------------------------------------------------------------- */ 52 53 #ifndef LIBFFI_H 54 #define LIBFFI_H 55 56 #ifdef __cplusplus 57 extern "C" { 58 #endif 59 60 /* Specify which architecture libffi is configured for. */ 61 //#ifndef @TARGET@ // android changed 62 //#define @TARGET@ // android changed 63 //#endif // android changed 64 65 /* ---- System configuration information --------------------------------- */ 66 67 //#include <ffitarget.h> // android changed -- included earlier 68 69 #ifndef LIBFFI_ASM 70 71 #include <stddef.h> 72 #include <limits.h> 73 74 /* LONG_LONG_MAX is not always defined (not if STRICT_ANSI, for example). 75 But we can find it either under the correct ANSI name, or under GNU 76 C's internal name. */ 77 #ifdef LONG_LONG_MAX 78 # define FFI_LONG_LONG_MAX LONG_LONG_MAX 79 #else 80 # ifdef LLONG_MAX 81 # define FFI_LONG_LONG_MAX LLONG_MAX 82 # else 83 # ifdef __GNUC__ 84 # define FFI_LONG_LONG_MAX __LONG_LONG_MAX__ 85 # endif 86 # endif 87 #endif 88 89 /* The closure code assumes that this works on pointers, i.e. a size_t */ 90 /* can hold a pointer. */ 91 92 typedef struct _ffi_type 93 { 94 size_t size; 95 unsigned short alignment; 96 unsigned short type; 97 struct _ffi_type **elements; 98 } ffi_type; 99 100 #ifndef LIBFFI_HIDE_BASIC_TYPES 101 #if SCHAR_MAX == 127 102 # define ffi_type_uchar ffi_type_uint8 103 # define ffi_type_schar ffi_type_sint8 104 #else 105 #error "char size not supported" 106 #endif 107 108 #if SHRT_MAX == 32767 109 # define ffi_type_ushort ffi_type_uint16 110 # define ffi_type_sshort ffi_type_sint16 111 #elif SHRT_MAX == 2147483647 112 # define ffi_type_ushort ffi_type_uint32 113 # define ffi_type_sshort ffi_type_sint32 114 #else 115 #error "short size not supported" 116 #endif 117 118 #if INT_MAX == 32767 119 # define ffi_type_uint ffi_type_uint16 120 # define ffi_type_sint ffi_type_sint16 121 #elif INT_MAX == 2147483647 122 # define ffi_type_uint ffi_type_uint32 123 # define ffi_type_sint ffi_type_sint32 124 #elif INT_MAX == 9223372036854775807 125 # define ffi_type_uint ffi_type_uint64 126 # define ffi_type_sint ffi_type_sint64 127 #else 128 #error "int size not supported" 129 #endif 130 131 #if LONG_MAX == 2147483647 132 # if FFI_LONG_LONG_MAX != 9223372036854775807 133 #error "no 64-bit data type supported" 134 # endif 135 #elif LONG_MAX != 9223372036854775807 136 #error "long size not supported" 137 #endif 138 139 #if LONG_MAX == 2147483647 140 # define ffi_type_ulong ffi_type_uint32 141 # define ffi_type_slong ffi_type_sint32 142 #elif LONG_MAX == 9223372036854775807 143 # define ffi_type_ulong ffi_type_uint64 144 # define ffi_type_slong ffi_type_sint64 145 #else 146 #error "long size not supported" 147 #endif 148 149 /* These are defined in types.c */ 150 extern ffi_type ffi_type_void; 151 extern ffi_type ffi_type_uint8; 152 extern ffi_type ffi_type_sint8; 153 extern ffi_type ffi_type_uint16; 154 extern ffi_type ffi_type_sint16; 155 extern ffi_type ffi_type_uint32; 156 extern ffi_type ffi_type_sint32; 157 extern ffi_type ffi_type_uint64; 158 extern ffi_type ffi_type_sint64; 159 extern ffi_type ffi_type_float; 160 extern ffi_type ffi_type_double; 161 extern ffi_type ffi_type_pointer; 162 163 #if CONF_HAVE_LONG_DOUBLE // android changed 164 extern ffi_type ffi_type_longdouble; 165 #else 166 #define ffi_type_longdouble ffi_type_double 167 #endif 168 #endif /* LIBFFI_HIDE_BASIC_TYPES */ 169 170 typedef enum { 171 FFI_OK = 0, 172 FFI_BAD_TYPEDEF, 173 FFI_BAD_ABI 174 } ffi_status; 175 176 typedef unsigned FFI_TYPE; 177 178 typedef struct { 179 ffi_abi abi; 180 unsigned nargs; 181 ffi_type **arg_types; 182 ffi_type *rtype; 183 unsigned bytes; 184 unsigned flags; 185 #ifdef FFI_EXTRA_CIF_FIELDS 186 FFI_EXTRA_CIF_FIELDS; 187 #endif 188 } ffi_cif; 189 190 /* ---- Definitions for the raw API -------------------------------------- */ 191 192 #ifndef FFI_SIZEOF_ARG 193 # if LONG_MAX == 2147483647 194 # define FFI_SIZEOF_ARG 4 195 # elif LONG_MAX == 9223372036854775807 196 # define FFI_SIZEOF_ARG 8 197 # endif 198 #endif 199 200 #ifndef FFI_SIZEOF_JAVA_RAW 201 # define FFI_SIZEOF_JAVA_RAW FFI_SIZEOF_ARG 202 #endif 203 204 typedef union { 205 ffi_sarg sint; 206 ffi_arg uint; 207 float flt; 208 char data[FFI_SIZEOF_ARG]; 209 void* ptr; 210 } ffi_raw; 211 212 #if FFI_SIZEOF_JAVA_RAW == 4 && FFI_SIZEOF_ARG == 8 213 /* This is a special case for mips64/n32 ABI (and perhaps others) where 214 sizeof(void *) is 4 and FFI_SIZEOF_ARG is 8. */ 215 typedef union { 216 signed int sint; 217 unsigned int uint; 218 float flt; 219 char data[FFI_SIZEOF_JAVA_RAW]; 220 void* ptr; 221 } ffi_java_raw; 222 #else 223 typedef ffi_raw ffi_java_raw; 224 #endif 225 226 227 void ffi_raw_call (ffi_cif *cif, 228 void (*fn)(void), 229 void *rvalue, 230 ffi_raw *avalue); 231 232 void ffi_ptrarray_to_raw (ffi_cif *cif, void **args, ffi_raw *raw); 233 void ffi_raw_to_ptrarray (ffi_cif *cif, ffi_raw *raw, void **args); 234 size_t ffi_raw_size (ffi_cif *cif); 235 236 /* This is analogous to the raw API, except it uses Java parameter */ 237 /* packing, even on 64-bit machines. I.e. on 64-bit machines */ 238 /* longs and doubles are followed by an empty 64-bit word. */ 239 240 void ffi_java_raw_call (ffi_cif *cif, 241 void (*fn)(void), 242 void *rvalue, 243 ffi_java_raw *avalue); 244 245 void ffi_java_ptrarray_to_raw (ffi_cif *cif, void **args, ffi_java_raw *raw); 246 void ffi_java_raw_to_ptrarray (ffi_cif *cif, ffi_java_raw *raw, void **args); 247 size_t ffi_java_raw_size (ffi_cif *cif); 248 249 /* ---- Definitions for closures ----------------------------------------- */ 250 251 #if FFI_CLOSURES 252 253 typedef struct { 254 char tramp[FFI_TRAMPOLINE_SIZE]; 255 ffi_cif *cif; 256 void (*fun)(ffi_cif*,void*,void**,void*); 257 void *user_data; 258 } ffi_closure __attribute__((aligned (8))); 259 260 void *ffi_closure_alloc (size_t size, void **code); 261 void ffi_closure_free (void *); 262 263 ffi_status 264 ffi_prep_closure (ffi_closure*, 265 ffi_cif *, 266 void (*fun)(ffi_cif*,void*,void**,void*), 267 void *user_data); 268 269 ffi_status 270 ffi_prep_closure_loc (ffi_closure*, 271 ffi_cif *, 272 void (*fun)(ffi_cif*,void*,void**,void*), 273 void *user_data, 274 void*codeloc); 275 276 typedef struct { 277 char tramp[FFI_TRAMPOLINE_SIZE]; 278 279 ffi_cif *cif; 280 281 #if !FFI_NATIVE_RAW_API 282 283 /* if this is enabled, then a raw closure has the same layout 284 as a regular closure. We use this to install an intermediate 285 handler to do the transaltion, void** -> ffi_raw*. */ 286 287 void (*translate_args)(ffi_cif*,void*,void**,void*); 288 void *this_closure; 289 290 #endif 291 292 void (*fun)(ffi_cif*,void*,ffi_raw*,void*); 293 void *user_data; 294 295 } ffi_raw_closure; 296 297 typedef struct { 298 char tramp[FFI_TRAMPOLINE_SIZE]; 299 300 ffi_cif *cif; 301 302 #if !FFI_NATIVE_RAW_API 303 304 /* if this is enabled, then a raw closure has the same layout 305 as a regular closure. We use this to install an intermediate 306 handler to do the transaltion, void** -> ffi_raw*. */ 307 308 void (*translate_args)(ffi_cif*,void*,void**,void*); 309 void *this_closure; 310 311 #endif 312 313 void (*fun)(ffi_cif*,void*,ffi_java_raw*,void*); 314 void *user_data; 315 316 } ffi_java_raw_closure; 317 318 ffi_status 319 ffi_prep_raw_closure (ffi_raw_closure*, 320 ffi_cif *cif, 321 void (*fun)(ffi_cif*,void*,ffi_raw*,void*), 322 void *user_data); 323 324 ffi_status 325 ffi_prep_raw_closure_loc (ffi_raw_closure*, 326 ffi_cif *cif, 327 void (*fun)(ffi_cif*,void*,ffi_raw*,void*), 328 void *user_data, 329 void *codeloc); 330 331 ffi_status 332 ffi_prep_java_raw_closure (ffi_java_raw_closure*, 333 ffi_cif *cif, 334 void (*fun)(ffi_cif*,void*,ffi_java_raw*,void*), 335 void *user_data); 336 337 ffi_status 338 ffi_prep_java_raw_closure_loc (ffi_java_raw_closure*, 339 ffi_cif *cif, 340 void (*fun)(ffi_cif*,void*,ffi_java_raw*,void*), 341 void *user_data, 342 void *codeloc); 343 344 #endif /* FFI_CLOSURES */ 345 346 /* ---- Public interface definition -------------------------------------- */ 347 348 ffi_status ffi_prep_cif(ffi_cif *cif, 349 ffi_abi abi, 350 unsigned int nargs, 351 ffi_type *rtype, 352 ffi_type **atypes); 353 354 void ffi_call(ffi_cif *cif, 355 void (*fn)(void), 356 void *rvalue, 357 void **avalue); 358 359 /* Useful for eliminating compiler warnings */ 360 #define FFI_FN(f) ((void (*)(void))f) 361 362 /* ---- Definitions shared with assembly code ---------------------------- */ 363 364 #endif 365 366 /* If these change, update src/mips/ffitarget.h. */ 367 #define FFI_TYPE_VOID 0 368 #define FFI_TYPE_INT 1 369 #define FFI_TYPE_FLOAT 2 370 #define FFI_TYPE_DOUBLE 3 371 #if CONF_HAVE_LONG_DOUBLE // android changed 372 #define FFI_TYPE_LONGDOUBLE 4 373 #else 374 #define FFI_TYPE_LONGDOUBLE FFI_TYPE_DOUBLE 375 #endif 376 #define FFI_TYPE_UINT8 5 377 #define FFI_TYPE_SINT8 6 378 #define FFI_TYPE_UINT16 7 379 #define FFI_TYPE_SINT16 8 380 #define FFI_TYPE_UINT32 9 381 #define FFI_TYPE_SINT32 10 382 #define FFI_TYPE_UINT64 11 383 #define FFI_TYPE_SINT64 12 384 #define FFI_TYPE_STRUCT 13 385 #define FFI_TYPE_POINTER 14 386 387 /* This should always refer to the last type code (for sanity checks) */ 388 #define FFI_TYPE_LAST FFI_TYPE_POINTER 389 390 #ifdef __cplusplus 391 } 392 #endif 393 394 #endif 395