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e2c2a699 | 1 | /* Copyright (C) 2010 Free Software Foundation, Inc. |
5b46a8c2 | 2 | * |
e2c2a699 AW |
3 | * This library is free software; you can redistribute it and/or |
4 | * modify it under the terms of the GNU Lesser General Public License | |
5 | * as published by the Free Software Foundation; either version 3 of | |
6 | * the License, or (at your option) any later version. | |
7 | * | |
8 | * This library is distributed in the hope that it will be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * Lesser General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU Lesser General Public | |
14 | * License along with this library; if not, write to the Free Software | |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | |
16 | * 02110-1301 USA | |
17 | */ | |
18 | ||
19 | #if HAVE_CONFIG_H | |
20 | # include <config.h> | |
21 | #endif | |
22 | ||
d8b04f04 AW |
23 | #include <ffi.h> |
24 | ||
25 | #include <alignof.h> | |
e2c2a699 | 26 | #include <string.h> |
86425e26 LC |
27 | #include <assert.h> |
28 | ||
ea7d717b | 29 | #include "libguile/_scm.h" |
20aafae2 | 30 | #include "libguile/bytevectors.h" |
d8b04f04 | 31 | #include "libguile/instructions.h" |
ea7d717b | 32 | #include "libguile/foreign.h" |
e2c2a699 AW |
33 | |
34 | \f | |
35 | ||
ab4779ff AW |
36 | SCM_SYMBOL (sym_void, "void"); |
37 | SCM_SYMBOL (sym_float, "float"); | |
38 | SCM_SYMBOL (sym_double, "double"); | |
39 | SCM_SYMBOL (sym_uint8, "uint8"); | |
40 | SCM_SYMBOL (sym_int8, "int8"); | |
41 | SCM_SYMBOL (sym_uint16, "uint16"); | |
42 | SCM_SYMBOL (sym_int16, "int16"); | |
43 | SCM_SYMBOL (sym_uint32, "uint32"); | |
44 | SCM_SYMBOL (sym_int32, "int32"); | |
45 | SCM_SYMBOL (sym_uint64, "uint64"); | |
46 | SCM_SYMBOL (sym_int64, "int64"); | |
dd1464bf LC |
47 | SCM_SYMBOL (sym_int, "int"); |
48 | SCM_SYMBOL (sym_long, "long"); | |
49 | SCM_SYMBOL (sym_unsigned_int, "unsigned-int"); | |
50 | SCM_SYMBOL (sym_unsigned_long, "unsigned-long"); | |
51 | SCM_SYMBOL (sym_size_t, "size_t"); | |
ab4779ff | 52 | |
3435f3c0 AW |
53 | /* that's for pointers, you know. */ |
54 | SCM_SYMBOL (sym_asterisk, "*"); | |
55 | ||
54eb59cf | 56 | SCM_SYMBOL (sym_null, "%null-pointer"); |
01ad5a7b | 57 | SCM_SYMBOL (sym_null_pointer_error, "null-pointer-error"); |
54eb59cf LC |
58 | |
59 | /* The cell representing the null pointer. */ | |
3e5ea35c | 60 | static SCM null_pointer; |
3435f3c0 | 61 | |
d4149a51 LC |
62 | #if SIZEOF_VOID_P == 4 |
63 | # define scm_to_uintptr scm_to_uint32 | |
64 | # define scm_from_uintptr scm_from_uint32 | |
65 | #elif SIZEOF_VOID_P == 8 | |
66 | # define scm_to_uintptr scm_to_uint64 | |
67 | # define scm_from_uintptr scm_from_uint64 | |
68 | #else | |
69 | # error unsupported pointer size | |
70 | #endif | |
71 | ||
72 | ||
01ad5a7b LC |
73 | /* Raise a null pointer dereference error. */ |
74 | static void | |
75 | null_pointer_error (const char *func_name) | |
76 | { | |
77 | scm_error (sym_null_pointer_error, func_name, | |
78 | "null pointer dereference", SCM_EOL, SCM_EOL); | |
79 | } | |
80 | ||
81 | \f | |
d8b04f04 AW |
82 | static SCM cif_to_procedure (SCM cif, SCM func_ptr); |
83 | ||
84 | ||
5b46a8c2 | 85 | static SCM pointer_weak_refs = SCM_BOOL_F; |
20aafae2 AW |
86 | |
87 | static void | |
88 | register_weak_reference (SCM from, SCM to) | |
89 | { | |
5b46a8c2 | 90 | scm_hashq_set_x (pointer_weak_refs, from, to); |
20aafae2 | 91 | } |
d4149a51 | 92 | |
e2c2a699 | 93 | static void |
5b46a8c2 | 94 | pointer_finalizer_trampoline (GC_PTR ptr, GC_PTR data) |
e2c2a699 | 95 | { |
5b46a8c2 LC |
96 | scm_t_pointer_finalizer finalizer = data; |
97 | finalizer (SCM_POINTER_VALUE (PTR2SCM (ptr))); | |
e2c2a699 AW |
98 | } |
99 | ||
d4149a51 LC |
100 | SCM_DEFINE (scm_make_pointer, "make-pointer", 1, 1, 0, |
101 | (SCM address, SCM finalizer), | |
102 | "Return a foreign pointer object pointing to @var{address}. " | |
103 | "If @var{finalizer} is passed, it should be a pointer to a " | |
104 | "one-argument C function that will be called when the pointer " | |
105 | "object becomes unreachable.") | |
106 | #define FUNC_NAME s_scm_make_pointer | |
107 | { | |
108 | void *c_finalizer; | |
109 | scm_t_uintptr c_address; | |
d4149a51 LC |
110 | |
111 | c_address = scm_to_uintptr (address); | |
112 | if (SCM_UNBNDP (finalizer)) | |
113 | c_finalizer = NULL; | |
114 | else | |
115 | { | |
5b46a8c2 LC |
116 | SCM_VALIDATE_POINTER (2, finalizer); |
117 | c_finalizer = SCM_POINTER_VALUE (finalizer); | |
d4149a51 LC |
118 | } |
119 | ||
854aa906 | 120 | return scm_from_pointer ((void *) c_address, c_finalizer); |
d4149a51 LC |
121 | } |
122 | #undef FUNC_NAME | |
123 | ||
e2c2a699 | 124 | SCM |
5b46a8c2 | 125 | scm_from_pointer (void *ptr, scm_t_pointer_finalizer finalizer) |
e2c2a699 | 126 | { |
9fdee5b4 | 127 | SCM ret; |
d4149a51 | 128 | |
854aa906 LC |
129 | if (ptr == NULL && finalizer == NULL) |
130 | ret = null_pointer; | |
131 | else | |
e2c2a699 | 132 | { |
854aa906 LC |
133 | scm_t_bits type; |
134 | ||
135 | type = scm_tc7_pointer | (finalizer ? (1 << 16UL) : 0UL); | |
136 | ret = scm_cell (type, (scm_t_bits) ptr); | |
137 | ||
138 | if (finalizer) | |
139 | { | |
140 | /* Register a finalizer for the newly created instance. */ | |
141 | GC_finalization_proc prev_finalizer; | |
142 | GC_PTR prev_finalizer_data; | |
143 | GC_REGISTER_FINALIZER_NO_ORDER (SCM2PTR (ret), | |
144 | pointer_finalizer_trampoline, | |
145 | finalizer, | |
146 | &prev_finalizer, | |
147 | &prev_finalizer_data); | |
148 | } | |
e2c2a699 AW |
149 | } |
150 | ||
9fdee5b4 | 151 | return ret; |
e2c2a699 AW |
152 | } |
153 | ||
5b46a8c2 LC |
154 | SCM_DEFINE (scm_pointer_address, "pointer-address", 1, 0, 0, |
155 | (SCM pointer), | |
156 | "Return the numerical value of @var{pointer}.") | |
157 | #define FUNC_NAME s_scm_pointer_address | |
e2c2a699 | 158 | { |
5b46a8c2 | 159 | SCM_VALIDATE_POINTER (1, pointer); |
01ad5a7b | 160 | |
5b46a8c2 | 161 | return scm_from_uintptr ((scm_t_uintptr) SCM_POINTER_VALUE (pointer)); |
e2c2a699 AW |
162 | } |
163 | #undef FUNC_NAME | |
164 | ||
17fc9efe | 165 | SCM_DEFINE (scm_dereference_pointer, "dereference-pointer", 1, 0, 0, |
5b46a8c2 | 166 | (SCM pointer), |
183a2a22 LC |
167 | "Assuming @var{pointer} points to a memory region that\n" |
168 | "holds a pointer, return this pointer.") | |
17fc9efe LC |
169 | #define FUNC_NAME s_scm_dereference_pointer |
170 | { | |
5b46a8c2 | 171 | SCM_VALIDATE_POINTER (1, pointer); |
17fc9efe | 172 | |
5b46a8c2 | 173 | return scm_from_pointer (* (void **) SCM_POINTER_VALUE (pointer), NULL); |
17fc9efe LC |
174 | } |
175 | #undef FUNC_NAME | |
176 | ||
5b46a8c2 LC |
177 | SCM_DEFINE (scm_pointer_to_bytevector, "pointer->bytevector", 2, 2, 0, |
178 | (SCM pointer, SCM len, SCM offset, SCM uvec_type), | |
183a2a22 LC |
179 | "Return a bytevector aliasing the @var{len} bytes pointed\n" |
180 | "to by @var{pointer}.\n\n" | |
20aafae2 AW |
181 | "The user may specify an alternate default interpretation for\n" |
182 | "the memory by passing the @var{uvec_type} argument, to indicate\n" | |
183 | "that the memory is an array of elements of that type.\n" | |
184 | "@var{uvec_type} should be something that\n" | |
185 | "@code{uniform-vector-element-type} would return, like @code{f32}\n" | |
186 | "or @code{s16}.\n\n" | |
183a2a22 LC |
187 | "When @var{offset} is passed, it specifies the offset in bytes\n" |
188 | "relative to @var{pointer} of the memory region aliased by the\n" | |
189 | "returned bytevector.") | |
5b46a8c2 | 190 | #define FUNC_NAME s_scm_pointer_to_bytevector |
20aafae2 AW |
191 | { |
192 | SCM ret; | |
193 | scm_t_int8 *ptr; | |
194 | size_t boffset, blen; | |
195 | scm_t_array_element_type btype; | |
196 | ||
5b46a8c2 LC |
197 | SCM_VALIDATE_POINTER (1, pointer); |
198 | ptr = SCM_POINTER_VALUE (pointer); | |
54eb59cf LC |
199 | |
200 | if (SCM_UNLIKELY (ptr == NULL)) | |
01ad5a7b | 201 | null_pointer_error (FUNC_NAME); |
54eb59cf | 202 | |
20aafae2 AW |
203 | if (SCM_UNBNDP (uvec_type)) |
204 | btype = SCM_ARRAY_ELEMENT_TYPE_VU8; | |
205 | else | |
206 | { | |
207 | int i; | |
208 | for (i = 0; i <= SCM_ARRAY_ELEMENT_TYPE_LAST; i++) | |
209 | if (scm_is_eq (uvec_type, scm_i_array_element_types[i])) | |
210 | break; | |
211 | switch (i) | |
212 | { | |
213 | case SCM_ARRAY_ELEMENT_TYPE_VU8: | |
214 | case SCM_ARRAY_ELEMENT_TYPE_U8: | |
215 | case SCM_ARRAY_ELEMENT_TYPE_S8: | |
216 | case SCM_ARRAY_ELEMENT_TYPE_U16: | |
217 | case SCM_ARRAY_ELEMENT_TYPE_S16: | |
218 | case SCM_ARRAY_ELEMENT_TYPE_U32: | |
219 | case SCM_ARRAY_ELEMENT_TYPE_S32: | |
220 | case SCM_ARRAY_ELEMENT_TYPE_U64: | |
221 | case SCM_ARRAY_ELEMENT_TYPE_S64: | |
222 | case SCM_ARRAY_ELEMENT_TYPE_F32: | |
223 | case SCM_ARRAY_ELEMENT_TYPE_F64: | |
224 | case SCM_ARRAY_ELEMENT_TYPE_C32: | |
225 | case SCM_ARRAY_ELEMENT_TYPE_C64: | |
226 | btype = i; | |
227 | break; | |
228 | default: | |
229 | scm_wrong_type_arg_msg (FUNC_NAME, SCM_ARG1, uvec_type, | |
230 | "uniform vector type"); | |
231 | } | |
232 | } | |
d4149a51 | 233 | |
20aafae2 AW |
234 | if (SCM_UNBNDP (offset)) |
235 | boffset = 0; | |
20aafae2 AW |
236 | else |
237 | boffset = scm_to_size_t (offset); | |
238 | ||
d4149a51 | 239 | blen = scm_to_size_t (len); |
20aafae2 AW |
240 | |
241 | ret = scm_c_take_typed_bytevector (ptr + boffset, blen, btype); | |
5b46a8c2 | 242 | register_weak_reference (ret, pointer); |
20aafae2 AW |
243 | return ret; |
244 | } | |
245 | #undef FUNC_NAME | |
246 | ||
22697acb LC |
247 | SCM_DEFINE (scm_bytevector_to_pointer, "bytevector->pointer", 1, 1, 0, |
248 | (SCM bv, SCM offset), | |
5b46a8c2 | 249 | "Return a pointer pointer aliasing the memory pointed to by\n" |
22697acb LC |
250 | "@var{bv} or @var{offset} bytes after @var{bv} when @var{offset}\n" |
251 | "is passed.") | |
5b46a8c2 | 252 | #define FUNC_NAME s_scm_bytevector_to_pointer |
20aafae2 AW |
253 | { |
254 | SCM ret; | |
255 | scm_t_int8 *ptr; | |
22697acb | 256 | size_t boffset; |
20aafae2 AW |
257 | |
258 | SCM_VALIDATE_BYTEVECTOR (1, bv); | |
259 | ptr = SCM_BYTEVECTOR_CONTENTS (bv); | |
22697acb | 260 | |
20aafae2 AW |
261 | if (SCM_UNBNDP (offset)) |
262 | boffset = 0; | |
263 | else | |
264 | boffset = scm_to_unsigned_integer (offset, 0, | |
265 | SCM_BYTEVECTOR_LENGTH (bv) - 1); | |
266 | ||
5b46a8c2 | 267 | ret = scm_from_pointer (ptr + boffset, NULL); |
20aafae2 AW |
268 | register_weak_reference (ret, bv); |
269 | return ret; | |
270 | } | |
271 | #undef FUNC_NAME | |
272 | ||
5b46a8c2 LC |
273 | SCM_DEFINE (scm_set_pointer_finalizer_x, "set-pointer-finalizer!", 2, 0, 0, |
274 | (SCM pointer, SCM finalizer), | |
3435f3c0 | 275 | "Arrange for the C procedure wrapped by @var{finalizer} to be\n" |
5b46a8c2 | 276 | "called on the pointer wrapped by @var{pointer} when @var{pointer}\n" |
3435f3c0 AW |
277 | "becomes unreachable. Note: the C procedure should not call into\n" |
278 | "Scheme. If you need a Scheme finalizer, use guardians.") | |
5b46a8c2 | 279 | #define FUNC_NAME s_scm_set_pointer_finalizer_x |
3435f3c0 AW |
280 | { |
281 | void *c_finalizer; | |
282 | GC_finalization_proc prev_finalizer; | |
283 | GC_PTR prev_finalizer_data; | |
284 | ||
5b46a8c2 LC |
285 | SCM_VALIDATE_POINTER (1, pointer); |
286 | SCM_VALIDATE_POINTER (2, finalizer); | |
d4149a51 | 287 | |
5b46a8c2 | 288 | c_finalizer = SCM_POINTER_VALUE (finalizer); |
3435f3c0 | 289 | |
5b46a8c2 | 290 | SCM_SET_CELL_WORD_0 (pointer, SCM_CELL_WORD_0 (pointer) | (1 << 16UL)); |
3435f3c0 | 291 | |
5b46a8c2 LC |
292 | GC_REGISTER_FINALIZER_NO_ORDER (SCM2PTR (pointer), |
293 | pointer_finalizer_trampoline, | |
3435f3c0 AW |
294 | c_finalizer, |
295 | &prev_finalizer, | |
296 | &prev_finalizer_data); | |
297 | ||
298 | return SCM_UNSPECIFIED; | |
299 | } | |
300 | #undef FUNC_NAME | |
301 | ||
302 | \f | |
303 | ||
e2c2a699 | 304 | void |
5b46a8c2 | 305 | scm_i_pointer_print (SCM pointer, SCM port, scm_print_state *pstate) |
e2c2a699 | 306 | { |
5b46a8c2 LC |
307 | scm_puts ("#<pointer ", port); |
308 | scm_display (scm_pointer_address (pointer), port); | |
e2c2a699 AW |
309 | scm_putc ('>', port); |
310 | } | |
311 | ||
312 | \f | |
313 | ||
b9264dc5 AW |
314 | SCM_DEFINE (scm_alignof, "alignof", 1, 0, 0, (SCM type), |
315 | "Return the alignment of @var{type}, in bytes.\n\n" | |
316 | "@var{type} should be a valid C type, like @code{int}.\n" | |
317 | "Alternately @var{type} may be the symbol @code{*}, in which\n" | |
318 | "case the alignment of a pointer is returned. @var{type} may\n" | |
319 | "also be a list of types, in which case the alignment of a\n" | |
320 | "@code{struct} with ABI-conventional packing is returned.") | |
9a396cbd AW |
321 | #define FUNC_NAME s_scm_alignof |
322 | { | |
323 | if (SCM_I_INUMP (type)) | |
324 | { | |
325 | switch (SCM_I_INUM (type)) | |
326 | { | |
327 | case SCM_FOREIGN_TYPE_FLOAT: | |
328 | return scm_from_size_t (alignof (float)); | |
329 | case SCM_FOREIGN_TYPE_DOUBLE: | |
330 | return scm_from_size_t (alignof (double)); | |
331 | case SCM_FOREIGN_TYPE_UINT8: | |
332 | return scm_from_size_t (alignof (scm_t_uint8)); | |
333 | case SCM_FOREIGN_TYPE_INT8: | |
334 | return scm_from_size_t (alignof (scm_t_int8)); | |
335 | case SCM_FOREIGN_TYPE_UINT16: | |
336 | return scm_from_size_t (alignof (scm_t_uint16)); | |
337 | case SCM_FOREIGN_TYPE_INT16: | |
338 | return scm_from_size_t (alignof (scm_t_int16)); | |
339 | case SCM_FOREIGN_TYPE_UINT32: | |
340 | return scm_from_size_t (alignof (scm_t_uint32)); | |
341 | case SCM_FOREIGN_TYPE_INT32: | |
342 | return scm_from_size_t (alignof (scm_t_int32)); | |
343 | case SCM_FOREIGN_TYPE_UINT64: | |
344 | return scm_from_size_t (alignof (scm_t_uint64)); | |
345 | case SCM_FOREIGN_TYPE_INT64: | |
346 | return scm_from_size_t (alignof (scm_t_int64)); | |
347 | default: | |
348 | scm_wrong_type_arg (FUNC_NAME, 1, type); | |
349 | } | |
350 | } | |
3435f3c0 AW |
351 | else if (scm_is_eq (type, sym_asterisk)) |
352 | /* a pointer */ | |
353 | return scm_from_size_t (alignof (void*)); | |
9a396cbd AW |
354 | else if (scm_is_pair (type)) |
355 | /* a struct, yo */ | |
356 | return scm_alignof (scm_car (type)); | |
357 | else | |
358 | scm_wrong_type_arg (FUNC_NAME, 1, type); | |
359 | } | |
360 | #undef FUNC_NAME | |
361 | ||
b9264dc5 AW |
362 | SCM_DEFINE (scm_sizeof, "sizeof", 1, 0, 0, (SCM type), |
363 | "Return the size of @var{type}, in bytes.\n\n" | |
364 | "@var{type} should be a valid C type, like @code{int}.\n" | |
365 | "Alternately @var{type} may be the symbol @code{*}, in which\n" | |
366 | "case the size of a pointer is returned. @var{type} may also\n" | |
367 | "be a list of types, in which case the size of a @code{struct}\n" | |
368 | "with ABI-conventional packing is returned.") | |
9a396cbd AW |
369 | #define FUNC_NAME s_scm_sizeof |
370 | { | |
371 | if (SCM_I_INUMP (type)) | |
372 | { | |
373 | switch (SCM_I_INUM (type)) | |
374 | { | |
375 | case SCM_FOREIGN_TYPE_FLOAT: | |
376 | return scm_from_size_t (sizeof (float)); | |
377 | case SCM_FOREIGN_TYPE_DOUBLE: | |
378 | return scm_from_size_t (sizeof (double)); | |
379 | case SCM_FOREIGN_TYPE_UINT8: | |
380 | return scm_from_size_t (sizeof (scm_t_uint8)); | |
381 | case SCM_FOREIGN_TYPE_INT8: | |
382 | return scm_from_size_t (sizeof (scm_t_int8)); | |
383 | case SCM_FOREIGN_TYPE_UINT16: | |
384 | return scm_from_size_t (sizeof (scm_t_uint16)); | |
385 | case SCM_FOREIGN_TYPE_INT16: | |
386 | return scm_from_size_t (sizeof (scm_t_int16)); | |
387 | case SCM_FOREIGN_TYPE_UINT32: | |
388 | return scm_from_size_t (sizeof (scm_t_uint32)); | |
389 | case SCM_FOREIGN_TYPE_INT32: | |
390 | return scm_from_size_t (sizeof (scm_t_int32)); | |
391 | case SCM_FOREIGN_TYPE_UINT64: | |
392 | return scm_from_size_t (sizeof (scm_t_uint64)); | |
393 | case SCM_FOREIGN_TYPE_INT64: | |
394 | return scm_from_size_t (sizeof (scm_t_int64)); | |
395 | default: | |
396 | scm_wrong_type_arg (FUNC_NAME, 1, type); | |
397 | } | |
398 | } | |
3435f3c0 AW |
399 | else if (scm_is_eq (type, sym_asterisk)) |
400 | /* a pointer */ | |
401 | return scm_from_size_t (sizeof (void*)); | |
9a396cbd AW |
402 | else if (scm_is_pair (type)) |
403 | { | |
404 | /* a struct */ | |
405 | size_t off = 0; | |
406 | while (scm_is_pair (type)) | |
407 | { | |
408 | off = ROUND_UP (off, scm_to_size_t (scm_alignof (scm_car (type)))); | |
409 | off += scm_to_size_t (scm_sizeof (scm_car (type))); | |
410 | type = scm_cdr (type); | |
411 | } | |
412 | return scm_from_size_t (off); | |
413 | } | |
414 | else | |
415 | scm_wrong_type_arg (FUNC_NAME, 1, type); | |
416 | } | |
417 | #undef FUNC_NAME | |
418 | ||
419 | ||
d8b04f04 AW |
420 | /* return 1 on success, 0 on failure */ |
421 | static int | |
422 | parse_ffi_type (SCM type, int return_p, long *n_structs, long *n_struct_elts) | |
423 | { | |
424 | if (SCM_I_INUMP (type)) | |
425 | { | |
426 | if ((SCM_I_INUM (type) < 0 ) | |
427 | || (SCM_I_INUM (type) > SCM_FOREIGN_TYPE_LAST)) | |
428 | return 0; | |
429 | else if (SCM_I_INUM (type) == SCM_FOREIGN_TYPE_VOID && !return_p) | |
430 | return 0; | |
431 | else | |
432 | return 1; | |
433 | } | |
3435f3c0 AW |
434 | else if (scm_is_eq (type, sym_asterisk)) |
435 | /* a pointer */ | |
436 | return 1; | |
d8b04f04 AW |
437 | else |
438 | { | |
439 | long len; | |
440 | ||
441 | len = scm_ilength (type); | |
442 | if (len < 1) | |
443 | return 0; | |
444 | while (len--) | |
445 | { | |
446 | if (!parse_ffi_type (scm_car (type), 0, n_structs, n_struct_elts)) | |
447 | return 0; | |
448 | (*n_struct_elts)++; | |
449 | type = scm_cdr (type); | |
450 | } | |
451 | (*n_structs)++; | |
452 | return 1; | |
453 | } | |
454 | } | |
455 | ||
456 | static void | |
457 | fill_ffi_type (SCM type, ffi_type *ftype, ffi_type ***type_ptrs, | |
458 | ffi_type **types) | |
459 | { | |
460 | if (SCM_I_INUMP (type)) | |
461 | { | |
462 | switch (SCM_I_INUM (type)) | |
463 | { | |
464 | case SCM_FOREIGN_TYPE_FLOAT: | |
465 | *ftype = ffi_type_float; | |
466 | return; | |
467 | case SCM_FOREIGN_TYPE_DOUBLE: | |
468 | *ftype = ffi_type_double; | |
469 | return; | |
470 | case SCM_FOREIGN_TYPE_UINT8: | |
471 | *ftype = ffi_type_uint8; | |
472 | return; | |
473 | case SCM_FOREIGN_TYPE_INT8: | |
474 | *ftype = ffi_type_sint8; | |
475 | return; | |
476 | case SCM_FOREIGN_TYPE_UINT16: | |
477 | *ftype = ffi_type_uint16; | |
478 | return; | |
479 | case SCM_FOREIGN_TYPE_INT16: | |
480 | *ftype = ffi_type_sint16; | |
481 | return; | |
482 | case SCM_FOREIGN_TYPE_UINT32: | |
483 | *ftype = ffi_type_uint32; | |
484 | return; | |
485 | case SCM_FOREIGN_TYPE_INT32: | |
486 | *ftype = ffi_type_sint32; | |
487 | return; | |
488 | case SCM_FOREIGN_TYPE_UINT64: | |
489 | *ftype = ffi_type_uint64; | |
490 | return; | |
491 | case SCM_FOREIGN_TYPE_INT64: | |
492 | *ftype = ffi_type_sint64; | |
493 | return; | |
494 | case SCM_FOREIGN_TYPE_VOID: | |
495 | *ftype = ffi_type_void; | |
496 | return; | |
497 | default: | |
75383ddb AW |
498 | scm_wrong_type_arg_msg ("make-foreign-function", 0, type, |
499 | "foreign type"); | |
d8b04f04 AW |
500 | } |
501 | } | |
3435f3c0 AW |
502 | else if (scm_is_eq (type, sym_asterisk)) |
503 | /* a pointer */ | |
504 | { | |
505 | *ftype = ffi_type_pointer; | |
506 | return; | |
507 | } | |
d8b04f04 AW |
508 | else |
509 | { | |
510 | long i, len; | |
511 | ||
512 | len = scm_ilength (type); | |
513 | ||
514 | ftype->size = 0; | |
515 | ftype->alignment = 0; | |
516 | ftype->type = FFI_TYPE_STRUCT; | |
517 | ftype->elements = *type_ptrs; | |
518 | *type_ptrs += len + 1; | |
519 | ||
520 | for (i = 0; i < len; i++) | |
521 | { | |
9a396cbd AW |
522 | ftype->elements[i] = *types; |
523 | *types += 1; | |
d8b04f04 AW |
524 | fill_ffi_type (scm_car (type), ftype->elements[i], |
525 | type_ptrs, types); | |
526 | type = scm_cdr (type); | |
527 | } | |
528 | ftype->elements[i] = NULL; | |
529 | } | |
530 | } | |
531 | ||
532 | SCM_DEFINE (scm_make_foreign_function, "make-foreign-function", 3, 0, 0, | |
533 | (SCM return_type, SCM func_ptr, SCM arg_types), | |
71725997 AW |
534 | "Make a foreign function.\n\n" |
535 | "Given the foreign void pointer @var{func_ptr}, its argument and\n" | |
536 | "return types @var{arg_types} and @var{return_type}, return a\n" | |
537 | "procedure that will pass arguments to the foreign function\n" | |
538 | "and return appropriate values.\n\n" | |
539 | "@var{arg_types} should be a list of foreign types.\n" | |
540 | "@code{return_type} should be a foreign type.") | |
d8b04f04 AW |
541 | #define FUNC_NAME s_scm_make_foreign_function |
542 | { | |
543 | SCM walk, scm_cif; | |
544 | long i, nargs, n_structs, n_struct_elts; | |
545 | size_t cif_len; | |
546 | char *mem; | |
547 | ffi_cif *cif; | |
548 | ffi_type **type_ptrs; | |
549 | ffi_type *types; | |
5b46a8c2 LC |
550 | |
551 | SCM_VALIDATE_POINTER (2, func_ptr); | |
d4149a51 | 552 | |
d8b04f04 AW |
553 | nargs = scm_ilength (arg_types); |
554 | SCM_ASSERT (nargs >= 0, arg_types, 3, FUNC_NAME); | |
555 | /* fixme: assert nargs < 1<<32 */ | |
556 | n_structs = n_struct_elts = 0; | |
557 | ||
558 | /* For want of talloc, we're going to have to do this in two passes: first we | |
559 | figure out how much memory is needed for all types, then we allocate the | |
560 | cif and the types all in one block. */ | |
561 | if (!parse_ffi_type (return_type, 1, &n_structs, &n_struct_elts)) | |
562 | scm_wrong_type_arg (FUNC_NAME, 1, return_type); | |
563 | for (walk = arg_types; scm_is_pair (walk); walk = scm_cdr (walk)) | |
564 | if (!parse_ffi_type (scm_car (walk), 0, &n_structs, &n_struct_elts)) | |
565 | scm_wrong_type_arg (FUNC_NAME, 3, scm_car (walk)); | |
566 | ||
567 | /* the memory: with space for the cif itself */ | |
568 | cif_len = sizeof (ffi_cif); | |
569 | ||
570 | /* then ffi_type pointers: one for each arg, one for each struct | |
571 | element, and one for each struct (for null-termination) */ | |
572 | cif_len = (ROUND_UP (cif_len, alignof(void*)) | |
573 | + (nargs + n_structs + n_struct_elts)*sizeof(void*)); | |
574 | ||
575 | /* then the ffi_type structs themselves, one per arg and struct element, and | |
576 | one for the return val */ | |
577 | cif_len = (ROUND_UP (cif_len, alignof(ffi_type)) | |
578 | + (nargs + n_struct_elts + 1)*sizeof(ffi_type)); | |
087aa6aa LC |
579 | |
580 | mem = scm_gc_malloc_pointerless (cif_len, "foreign"); | |
5b46a8c2 | 581 | scm_cif = scm_from_pointer (mem, NULL); |
087aa6aa LC |
582 | cif = (ffi_cif *) mem; |
583 | ||
d8b04f04 AW |
584 | /* reuse cif_len to walk through the mem */ |
585 | cif_len = ROUND_UP (sizeof (ffi_cif), alignof(void*)); | |
586 | type_ptrs = (ffi_type**)(mem + cif_len); | |
587 | cif_len = ROUND_UP (cif_len | |
588 | + (nargs + n_structs + n_struct_elts)*sizeof(void*), | |
589 | alignof(ffi_type)); | |
590 | types = (ffi_type*)(mem + cif_len); | |
591 | ||
592 | /* whew. now knit the pointers together. */ | |
593 | cif->rtype = types++; | |
594 | fill_ffi_type (return_type, cif->rtype, &type_ptrs, &types); | |
595 | cif->arg_types = type_ptrs; | |
596 | type_ptrs += nargs; | |
597 | for (walk = arg_types, i = 0; scm_is_pair (walk); walk = scm_cdr (walk), i++) | |
598 | { | |
599 | cif->arg_types[i] = types++; | |
600 | fill_ffi_type (scm_car (walk), cif->arg_types[i], &type_ptrs, &types); | |
601 | } | |
602 | ||
603 | /* round out the cif, and we're done. */ | |
604 | cif->abi = FFI_DEFAULT_ABI; | |
605 | cif->nargs = nargs; | |
606 | cif->bytes = 0; | |
607 | cif->flags = 0; | |
608 | ||
609 | if (FFI_OK != ffi_prep_cif (cif, FFI_DEFAULT_ABI, cif->nargs, cif->rtype, | |
610 | cif->arg_types)) | |
611 | scm_misc_error (FUNC_NAME, "ffi_prep_cif failed", SCM_EOL); | |
612 | ||
613 | return cif_to_procedure (scm_cif, func_ptr); | |
614 | } | |
615 | #undef FUNC_NAME | |
616 | ||
617 | \f | |
618 | ||
619 | /* Pre-generate trampolines for less than 10 arguments. */ | |
620 | ||
621 | #ifdef WORDS_BIGENDIAN | |
622 | #define OBJCODE_HEADER 0, 0, 0, 8, 0, 0, 0, 40 | |
623 | #define META_HEADER 0, 0, 0, 32, 0, 0, 0, 0 | |
624 | #else | |
625 | #define OBJCODE_HEADER 8, 0, 0, 0, 40, 0, 0, 0 | |
626 | #define META_HEADER 32, 0, 0, 0, 0, 0, 0, 0 | |
627 | #endif | |
628 | ||
629 | #define CODE(nreq) \ | |
630 | OBJCODE_HEADER, \ | |
631 | /* 0 */ scm_op_assert_nargs_ee, 0, nreq, /* assert number of args */ \ | |
632 | /* 3 */ scm_op_object_ref, 0, /* push the pair with the cif and the function pointer */ \ | |
633 | /* 5 */ scm_op_foreign_call, nreq, /* and call (will return value as well) */ \ | |
634 | /* 7 */ scm_op_nop, \ | |
635 | /* 8 */ META (3, 7, nreq) | |
636 | ||
637 | #define META(start, end, nreq) \ | |
638 | META_HEADER, \ | |
639 | /* 0 */ scm_op_make_eol, /* bindings */ \ | |
640 | /* 1 */ scm_op_make_eol, /* sources */ \ | |
641 | /* 2 */ scm_op_make_int8, start, scm_op_make_int8, end, /* arity: from ip N to ip N */ \ | |
642 | /* 6 */ scm_op_make_int8, nreq, /* the arity is N required args */ \ | |
643 | /* 8 */ scm_op_list, 0, 3, /* make a list of those 3 vals */ \ | |
644 | /* 11 */ scm_op_list, 0, 1, /* and the arities will be a list of that one list */ \ | |
645 | /* 14 */ scm_op_load_symbol, 0, 0, 4, 'n', 'a', 'm', 'e', /* `name' */ \ | |
646 | /* 22 */ scm_op_object_ref, 1, /* the name from the object table */ \ | |
647 | /* 24 */ scm_op_cons, /* make a pair for the properties */ \ | |
648 | /* 25 */ scm_op_list, 0, 4, /* pack bindings, sources, and arities into list */ \ | |
649 | /* 28 */ scm_op_return, /* and return */ \ | |
650 | /* 29 */ scm_op_nop, scm_op_nop, scm_op_nop \ | |
651 | /* 32 */ | |
652 | ||
653 | static const struct | |
654 | { | |
655 | scm_t_uint64 dummy; /* ensure 8-byte alignment; perhaps there's a better way */ | |
656 | const scm_t_uint8 bytes[10 * (sizeof (struct scm_objcode) + 8 | |
657 | + sizeof (struct scm_objcode) + 32)]; | |
658 | } raw_bytecode = { | |
659 | 0, | |
660 | { | |
661 | CODE (0), CODE (1), CODE (2), CODE (3), CODE (4), | |
662 | CODE (5), CODE (6), CODE (7), CODE (8), CODE (9) | |
663 | } | |
664 | }; | |
665 | ||
666 | #undef CODE | |
667 | #undef META | |
668 | #undef OBJCODE_HEADER | |
669 | #undef META_HEADER | |
670 | ||
671 | /* | |
672 | (defun generate-objcode-cells (n) | |
673 | "Generate objcode cells for up to N arguments" | |
674 | (interactive "p") | |
675 | (let ((i 0)) | |
676 | (while (< i n) | |
677 | (insert | |
678 | (format " { STATIC_OBJCODE_TAG, SCM_PACK (raw_bytecode.bytes + %d) },\n" | |
679 | (* (+ 4 4 8 4 4 32) i))) | |
680 | (insert " { SCM_BOOL_F, SCM_PACK (0) },\n") | |
681 | (setq i (1+ i))))) | |
682 | */ | |
683 | #define STATIC_OBJCODE_TAG \ | |
684 | SCM_PACK (scm_tc7_objcode | (SCM_F_OBJCODE_IS_STATIC << 8)) | |
685 | ||
686 | static const struct | |
687 | { | |
688 | scm_t_uint64 dummy; /* alignment */ | |
689 | scm_t_cell cells[10 * 2]; /* 10 double cells */ | |
690 | } objcode_cells = { | |
691 | 0, | |
692 | /* C-u 1 0 M-x generate-objcode-cells RET */ | |
693 | { | |
694 | { STATIC_OBJCODE_TAG, SCM_PACK (raw_bytecode.bytes + 0) }, | |
695 | { SCM_BOOL_F, SCM_PACK (0) }, | |
696 | { STATIC_OBJCODE_TAG, SCM_PACK (raw_bytecode.bytes + 56) }, | |
697 | { SCM_BOOL_F, SCM_PACK (0) }, | |
698 | { STATIC_OBJCODE_TAG, SCM_PACK (raw_bytecode.bytes + 112) }, | |
699 | { SCM_BOOL_F, SCM_PACK (0) }, | |
700 | { STATIC_OBJCODE_TAG, SCM_PACK (raw_bytecode.bytes + 168) }, | |
701 | { SCM_BOOL_F, SCM_PACK (0) }, | |
702 | { STATIC_OBJCODE_TAG, SCM_PACK (raw_bytecode.bytes + 224) }, | |
703 | { SCM_BOOL_F, SCM_PACK (0) }, | |
704 | { STATIC_OBJCODE_TAG, SCM_PACK (raw_bytecode.bytes + 280) }, | |
705 | { SCM_BOOL_F, SCM_PACK (0) }, | |
706 | { STATIC_OBJCODE_TAG, SCM_PACK (raw_bytecode.bytes + 336) }, | |
707 | { SCM_BOOL_F, SCM_PACK (0) }, | |
708 | { STATIC_OBJCODE_TAG, SCM_PACK (raw_bytecode.bytes + 392) }, | |
709 | { SCM_BOOL_F, SCM_PACK (0) }, | |
710 | { STATIC_OBJCODE_TAG, SCM_PACK (raw_bytecode.bytes + 448) }, | |
711 | { SCM_BOOL_F, SCM_PACK (0) }, | |
712 | { STATIC_OBJCODE_TAG, SCM_PACK (raw_bytecode.bytes + 504) }, | |
713 | { SCM_BOOL_F, SCM_PACK (0) } | |
714 | } | |
715 | }; | |
716 | ||
717 | static const SCM objcode_trampolines[10] = { | |
718 | SCM_PACK (objcode_cells.cells+0), | |
719 | SCM_PACK (objcode_cells.cells+2), | |
720 | SCM_PACK (objcode_cells.cells+4), | |
721 | SCM_PACK (objcode_cells.cells+6), | |
722 | SCM_PACK (objcode_cells.cells+8), | |
723 | SCM_PACK (objcode_cells.cells+10), | |
724 | SCM_PACK (objcode_cells.cells+12), | |
725 | SCM_PACK (objcode_cells.cells+14), | |
726 | SCM_PACK (objcode_cells.cells+16), | |
727 | SCM_PACK (objcode_cells.cells+18), | |
728 | }; | |
729 | ||
730 | static SCM | |
731 | cif_to_procedure (SCM cif, SCM func_ptr) | |
732 | { | |
d4149a51 LC |
733 | ffi_cif *c_cif; |
734 | unsigned int nargs; | |
d8b04f04 | 735 | SCM objcode, table, ret; |
d4149a51 | 736 | |
5b46a8c2 | 737 | c_cif = (ffi_cif *) SCM_POINTER_VALUE (cif); |
d4149a51 LC |
738 | nargs = c_cif->nargs; |
739 | ||
d8b04f04 AW |
740 | if (nargs < 10) |
741 | objcode = objcode_trampolines[nargs]; | |
742 | else | |
75383ddb AW |
743 | scm_misc_error ("make-foreign-function", "args >= 10 currently unimplemented", |
744 | SCM_EOL); | |
d8b04f04 AW |
745 | |
746 | table = scm_c_make_vector (2, SCM_UNDEFINED); | |
747 | SCM_SIMPLE_VECTOR_SET (table, 0, scm_cons (cif, func_ptr)); | |
748 | SCM_SIMPLE_VECTOR_SET (table, 1, SCM_BOOL_F); /* name */ | |
749 | ret = scm_make_program (objcode, table, SCM_BOOL_F); | |
750 | ||
751 | return ret; | |
752 | } | |
753 | ||
165a8643 | 754 | /* Set *LOC to the foreign representation of X with TYPE. */ |
4d9130a5 | 755 | static void |
165a8643 | 756 | unpack (const ffi_type *type, void *loc, SCM x) |
4d9130a5 AW |
757 | { |
758 | switch (type->type) | |
759 | { | |
760 | case FFI_TYPE_FLOAT: | |
165a8643 | 761 | *(float *) loc = scm_to_double (x); |
4d9130a5 AW |
762 | break; |
763 | case FFI_TYPE_DOUBLE: | |
165a8643 | 764 | *(double *) loc = scm_to_double (x); |
4d9130a5 AW |
765 | break; |
766 | case FFI_TYPE_UINT8: | |
165a8643 | 767 | *(scm_t_uint8 *) loc = scm_to_uint8 (x); |
4d9130a5 AW |
768 | break; |
769 | case FFI_TYPE_SINT8: | |
165a8643 | 770 | *(scm_t_int8 *) loc = scm_to_int8 (x); |
4d9130a5 AW |
771 | break; |
772 | case FFI_TYPE_UINT16: | |
165a8643 | 773 | *(scm_t_uint16 *) loc = scm_to_uint16 (x); |
4d9130a5 AW |
774 | break; |
775 | case FFI_TYPE_SINT16: | |
165a8643 | 776 | *(scm_t_int16 *) loc = scm_to_int16 (x); |
4d9130a5 AW |
777 | break; |
778 | case FFI_TYPE_UINT32: | |
165a8643 | 779 | *(scm_t_uint32 *) loc = scm_to_uint32 (x); |
4d9130a5 AW |
780 | break; |
781 | case FFI_TYPE_SINT32: | |
165a8643 | 782 | *(scm_t_int32 *) loc = scm_to_int32 (x); |
4d9130a5 AW |
783 | break; |
784 | case FFI_TYPE_UINT64: | |
165a8643 | 785 | *(scm_t_uint64 *) loc = scm_to_uint64 (x); |
4d9130a5 AW |
786 | break; |
787 | case FFI_TYPE_SINT64: | |
165a8643 | 788 | *(scm_t_int64 *) loc = scm_to_int64 (x); |
4d9130a5 AW |
789 | break; |
790 | case FFI_TYPE_STRUCT: | |
5b46a8c2 | 791 | memcpy (loc, SCM_POINTER_VALUE (x), type->size); |
4d9130a5 AW |
792 | break; |
793 | case FFI_TYPE_POINTER: | |
5b46a8c2 | 794 | *(void **) loc = SCM_POINTER_VALUE (x); |
4d9130a5 AW |
795 | break; |
796 | default: | |
797 | abort (); | |
798 | } | |
799 | } | |
800 | ||
165a8643 | 801 | /* Return a Scheme representation of the foreign value at LOC of type TYPE. */ |
4d9130a5 | 802 | static SCM |
165a8643 | 803 | pack (const ffi_type * type, const void *loc) |
4d9130a5 AW |
804 | { |
805 | switch (type->type) | |
806 | { | |
807 | case FFI_TYPE_VOID: | |
808 | return SCM_UNSPECIFIED; | |
809 | case FFI_TYPE_FLOAT: | |
165a8643 | 810 | return scm_from_double (*(float *) loc); |
4d9130a5 | 811 | case FFI_TYPE_DOUBLE: |
165a8643 | 812 | return scm_from_double (*(double *) loc); |
4d9130a5 | 813 | case FFI_TYPE_UINT8: |
165a8643 | 814 | return scm_from_uint8 (*(scm_t_uint8 *) loc); |
4d9130a5 | 815 | case FFI_TYPE_SINT8: |
165a8643 | 816 | return scm_from_int8 (*(scm_t_int8 *) loc); |
4d9130a5 | 817 | case FFI_TYPE_UINT16: |
165a8643 | 818 | return scm_from_uint16 (*(scm_t_uint16 *) loc); |
4d9130a5 | 819 | case FFI_TYPE_SINT16: |
165a8643 | 820 | return scm_from_int16 (*(scm_t_int16 *) loc); |
4d9130a5 | 821 | case FFI_TYPE_UINT32: |
165a8643 | 822 | return scm_from_uint32 (*(scm_t_uint32 *) loc); |
4d9130a5 | 823 | case FFI_TYPE_SINT32: |
165a8643 | 824 | return scm_from_int32 (*(scm_t_int32 *) loc); |
4d9130a5 | 825 | case FFI_TYPE_UINT64: |
165a8643 | 826 | return scm_from_uint64 (*(scm_t_uint64 *) loc); |
4d9130a5 | 827 | case FFI_TYPE_SINT64: |
165a8643 | 828 | return scm_from_int64 (*(scm_t_int64 *) loc); |
4d9130a5 AW |
829 | case FFI_TYPE_STRUCT: |
830 | { | |
165a8643 LC |
831 | void *mem = scm_gc_malloc_pointerless (type->size, "foreign"); |
832 | memcpy (mem, loc, type->size); | |
5b46a8c2 | 833 | return scm_from_pointer (mem, NULL); |
4d9130a5 AW |
834 | } |
835 | case FFI_TYPE_POINTER: | |
5b46a8c2 | 836 | return scm_from_pointer (*(void **) loc, NULL); |
4d9130a5 AW |
837 | default: |
838 | abort (); | |
839 | } | |
840 | } | |
841 | ||
165a8643 | 842 | |
4d9130a5 | 843 | SCM |
165a8643 | 844 | scm_i_foreign_call (SCM foreign, const SCM *argv) |
4d9130a5 AW |
845 | { |
846 | /* FOREIGN is the pair that cif_to_procedure set as the 0th element of the | |
847 | objtable. */ | |
848 | ffi_cif *cif; | |
b577bc90 | 849 | void (*func) (void); |
4d9130a5 AW |
850 | scm_t_uint8 *data; |
851 | void *rvalue; | |
852 | void **args; | |
853 | unsigned i; | |
a2c69049 | 854 | size_t arg_size; |
4d9130a5 AW |
855 | scm_t_ptrdiff off; |
856 | ||
5b46a8c2 LC |
857 | cif = SCM_POINTER_VALUE (SCM_CAR (foreign)); |
858 | func = SCM_POINTER_VALUE (SCM_CDR (foreign)); | |
a2c69049 LC |
859 | |
860 | /* Argument pointers. */ | |
b577bc90 | 861 | args = alloca (sizeof (void *) * cif->nargs); |
a2c69049 | 862 | |
86425e26 LC |
863 | /* Compute the worst-case amount of memory needed to store all the argument |
864 | values. Note: as of libffi 3.0.9 `cif->bytes' is undocumented and is zero, | |
865 | so it can't be used for that purpose. */ | |
866 | for (i = 0, arg_size = 0; i < cif->nargs; i++) | |
867 | arg_size += cif->arg_types[i]->size + cif->arg_types[i]->alignment - 1; | |
a2c69049 LC |
868 | |
869 | /* Space for argument values, followed by return value. */ | |
86425e26 LC |
870 | data = alloca (arg_size + cif->rtype->size |
871 | + max (sizeof (void *), cif->rtype->alignment)); | |
a2c69049 | 872 | |
165a8643 LC |
873 | /* Unpack ARGV to native values, setting ARGV pointers. */ |
874 | for (i = 0, off = 0; | |
875 | i < cif->nargs; | |
86425e26 LC |
876 | off = (scm_t_uint8 *) args[i] - data + cif->arg_types[i]->size, |
877 | i++) | |
4d9130a5 | 878 | { |
86425e26 LC |
879 | /* Suitably align the storage area for argument I. */ |
880 | args[i] = (void *) ROUND_UP ((scm_t_uintptr) data + off, | |
881 | cif->arg_types[i]->alignment); | |
882 | assert ((scm_t_uintptr) args[i] % cif->arg_types[i]->alignment == 0); | |
4d9130a5 | 883 | unpack (cif->arg_types[i], args[i], argv[i]); |
4d9130a5 | 884 | } |
165a8643 | 885 | |
86425e26 LC |
886 | /* Prepare space for the return value. On some platforms, such as |
887 | `armv5tel-*-linux-gnueabi', the return value has to be at least | |
888 | word-aligned, even if its type doesn't have any alignment requirement as is | |
889 | the case with `char'. */ | |
890 | rvalue = (void *) ROUND_UP ((scm_t_uintptr) data + off, | |
891 | max (sizeof (void *), cif->rtype->alignment)); | |
4d9130a5 AW |
892 | |
893 | /* off we go! */ | |
894 | ffi_call (cif, func, rvalue, args); | |
895 | ||
896 | return pack (cif->rtype, rvalue); | |
897 | } | |
898 | ||
d8b04f04 AW |
899 | \f |
900 | ||
ab4779ff | 901 | static void |
e2c2a699 AW |
902 | scm_init_foreign (void) |
903 | { | |
904 | #ifndef SCM_MAGIC_SNARFER | |
905 | #include "libguile/foreign.x" | |
906 | #endif | |
ab4779ff AW |
907 | scm_define (sym_void, scm_from_uint8 (SCM_FOREIGN_TYPE_VOID)); |
908 | scm_define (sym_float, scm_from_uint8 (SCM_FOREIGN_TYPE_FLOAT)); | |
909 | scm_define (sym_double, scm_from_uint8 (SCM_FOREIGN_TYPE_DOUBLE)); | |
910 | scm_define (sym_uint8, scm_from_uint8 (SCM_FOREIGN_TYPE_UINT8)); | |
911 | scm_define (sym_int8, scm_from_uint8 (SCM_FOREIGN_TYPE_INT8)); | |
912 | scm_define (sym_uint16, scm_from_uint8 (SCM_FOREIGN_TYPE_UINT16)); | |
913 | scm_define (sym_int16, scm_from_uint8 (SCM_FOREIGN_TYPE_INT16)); | |
914 | scm_define (sym_uint32, scm_from_uint8 (SCM_FOREIGN_TYPE_UINT32)); | |
915 | scm_define (sym_int32, scm_from_uint8 (SCM_FOREIGN_TYPE_INT32)); | |
916 | scm_define (sym_uint64, scm_from_uint8 (SCM_FOREIGN_TYPE_UINT64)); | |
917 | scm_define (sym_int64, scm_from_uint8 (SCM_FOREIGN_TYPE_INT64)); | |
dd1464bf LC |
918 | |
919 | scm_define (sym_int, | |
920 | #if SIZEOF_INT == 8 | |
921 | scm_from_uint8 (SCM_FOREIGN_TYPE_INT64) | |
922 | #elif SIZEOF_INT == 4 | |
923 | scm_from_uint8 (SCM_FOREIGN_TYPE_INT32) | |
924 | #else | |
925 | # error unsupported sizeof (int) | |
926 | #endif | |
927 | ); | |
928 | ||
929 | scm_define (sym_unsigned_int, | |
930 | #if SIZEOF_UNSIGNED_INT == 8 | |
931 | scm_from_uint8 (SCM_FOREIGN_TYPE_UINT64) | |
932 | #elif SIZEOF_UNSIGNED_INT == 4 | |
933 | scm_from_uint8 (SCM_FOREIGN_TYPE_UINT32) | |
934 | #else | |
935 | # error unsupported sizeof (unsigned int) | |
936 | #endif | |
937 | ); | |
938 | ||
939 | scm_define (sym_long, | |
940 | #if SIZEOF_LONG == 8 | |
941 | scm_from_uint8 (SCM_FOREIGN_TYPE_INT64) | |
942 | #elif SIZEOF_LONG == 4 | |
943 | scm_from_uint8 (SCM_FOREIGN_TYPE_INT32) | |
944 | #else | |
945 | # error unsupported sizeof (long) | |
946 | #endif | |
947 | ); | |
948 | ||
949 | scm_define (sym_unsigned_long, | |
950 | #if SIZEOF_UNSIGNED_LONG == 8 | |
951 | scm_from_uint8 (SCM_FOREIGN_TYPE_UINT64) | |
952 | #elif SIZEOF_UNSIGNED_LONG == 4 | |
953 | scm_from_uint8 (SCM_FOREIGN_TYPE_UINT32) | |
954 | #else | |
955 | # error unsupported sizeof (unsigned long) | |
956 | #endif | |
957 | ); | |
958 | ||
959 | scm_define (sym_size_t, | |
960 | #if SIZEOF_SIZE_T == 8 | |
961 | scm_from_uint8 (SCM_FOREIGN_TYPE_UINT64) | |
962 | #elif SIZEOF_SIZE_T == 4 | |
963 | scm_from_uint8 (SCM_FOREIGN_TYPE_UINT32) | |
964 | #else | |
965 | # error unsupported sizeof (size_t) | |
966 | #endif | |
967 | ); | |
54eb59cf | 968 | |
5b46a8c2 | 969 | null_pointer = scm_cell (scm_tc7_pointer, 0); |
3e5ea35c | 970 | scm_define (sym_null, null_pointer); |
ab4779ff AW |
971 | } |
972 | ||
973 | void | |
974 | scm_register_foreign (void) | |
975 | { | |
44602b08 AW |
976 | scm_c_register_extension ("libguile-" SCM_EFFECTIVE_VERSION, |
977 | "scm_init_foreign", | |
ab4779ff AW |
978 | (scm_t_extension_init_func)scm_init_foreign, |
979 | NULL); | |
5b46a8c2 | 980 | pointer_weak_refs = scm_make_weak_key_hash_table (SCM_UNDEFINED); |
e2c2a699 AW |
981 | } |
982 | ||
983 | /* | |
984 | Local Variables: | |
985 | c-file-style: "gnu" | |
986 | End: | |
987 | */ |