Commit | Line | Data |
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8f5cfc81 | 1 | /* Copyright (C) 2001 Free Software Foundation, Inc. |
a98cef7e KN |
2 | * |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this software; see the file COPYING. If not, write to | |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, | |
16 | * Boston, MA 02111-1307 USA | |
17 | * | |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
40 | * If you do not wish that, delete this exception notice. */ | |
41 | ||
42 | /* This file is included in vm_engine.c */ | |
43 | ||
a98cef7e KN |
44 | \f |
45 | /* | |
46 | * Basic operations | |
47 | */ | |
48 | ||
17e90c5e | 49 | /* This must be the first instruction! */ |
46cd9a34 | 50 | VM_DEFINE_INSTRUCTION (nop, "nop", 0, 0, 0) |
a98cef7e KN |
51 | { |
52 | NEXT; | |
53 | } | |
54 | ||
46cd9a34 | 55 | VM_DEFINE_INSTRUCTION (halt, "halt", 0, 0, 0) |
a98cef7e | 56 | { |
a6df585a | 57 | SCM ret; |
3d5ee0cd | 58 | vp->time += scm_c_get_internal_run_time () - start_time; |
17e90c5e | 59 | HALT_HOOK (); |
a6df585a | 60 | POP (ret); |
17e90c5e KN |
61 | FREE_FRAME (); |
62 | SYNC_ALL (); | |
63 | return ret; | |
a98cef7e KN |
64 | } |
65 | ||
7a0d0cee KN |
66 | VM_DEFINE_INSTRUCTION (break, "break", 0, 0, 0) |
67 | { | |
68 | BREAK_HOOK (); | |
69 | NEXT; | |
70 | } | |
71 | ||
499a4c07 | 72 | VM_DEFINE_INSTRUCTION (drop, "drop", 0, 0, 0) |
a98cef7e | 73 | { |
17e90c5e | 74 | DROP (); |
a98cef7e KN |
75 | NEXT; |
76 | } | |
77 | ||
cb4cca12 KN |
78 | VM_DEFINE_INSTRUCTION (mark, "mark", 0, 0, 1) |
79 | { | |
80 | PUSH (SCM_UNDEFINED); | |
81 | NEXT; | |
82 | } | |
83 | ||
46cd9a34 | 84 | VM_DEFINE_INSTRUCTION (dup, "dup", 0, 0, 1) |
26403690 | 85 | { |
f349065e KN |
86 | SCM x = *sp; |
87 | PUSH (x); | |
26403690 KN |
88 | NEXT; |
89 | } | |
90 | ||
17e90c5e KN |
91 | \f |
92 | /* | |
93 | * Object creation | |
94 | */ | |
a98cef7e | 95 | |
46cd9a34 | 96 | VM_DEFINE_INSTRUCTION (void, "void", 0, 0, 1) |
a98cef7e | 97 | { |
17e90c5e | 98 | PUSH (SCM_UNSPECIFIED); |
a98cef7e KN |
99 | NEXT; |
100 | } | |
101 | ||
46cd9a34 | 102 | VM_DEFINE_INSTRUCTION (make_true, "make-true", 0, 0, 1) |
a98cef7e | 103 | { |
17e90c5e | 104 | PUSH (SCM_BOOL_T); |
a98cef7e KN |
105 | NEXT; |
106 | } | |
107 | ||
46cd9a34 | 108 | VM_DEFINE_INSTRUCTION (make_false, "make-false", 0, 0, 1) |
a98cef7e | 109 | { |
17e90c5e | 110 | PUSH (SCM_BOOL_F); |
a98cef7e KN |
111 | NEXT; |
112 | } | |
113 | ||
46cd9a34 | 114 | VM_DEFINE_INSTRUCTION (make_eol, "make-eol", 0, 0, 1) |
a98cef7e | 115 | { |
17e90c5e | 116 | PUSH (SCM_EOL); |
a98cef7e KN |
117 | NEXT; |
118 | } | |
119 | ||
46cd9a34 | 120 | VM_DEFINE_INSTRUCTION (make_int8, "make-int8", 1, 0, 1) |
a98cef7e | 121 | { |
2d80426a | 122 | PUSH (SCM_I_MAKINUM ((signed char) FETCH ())); |
a98cef7e KN |
123 | NEXT; |
124 | } | |
125 | ||
46cd9a34 | 126 | VM_DEFINE_INSTRUCTION (make_int8_0, "make-int8:0", 0, 0, 1) |
a98cef7e | 127 | { |
238e7a11 | 128 | PUSH (SCM_INUM0); |
a98cef7e KN |
129 | NEXT; |
130 | } | |
131 | ||
46cd9a34 | 132 | VM_DEFINE_INSTRUCTION (make_int8_1, "make-int8:1", 0, 0, 1) |
a98cef7e | 133 | { |
238e7a11 | 134 | PUSH (SCM_I_MAKINUM (1)); |
a98cef7e KN |
135 | NEXT; |
136 | } | |
137 | ||
46cd9a34 | 138 | VM_DEFINE_INSTRUCTION (make_int16, "make-int16", 2, 0, 1) |
a98cef7e | 139 | { |
ea9b4b29 KN |
140 | int h = FETCH (); |
141 | int l = FETCH (); | |
2d80426a | 142 | PUSH (SCM_I_MAKINUM ((signed short) (h << 8) + l)); |
a98cef7e KN |
143 | NEXT; |
144 | } | |
145 | ||
46cd9a34 | 146 | VM_DEFINE_INSTRUCTION (make_char8, "make-char8", 1, 0, 1) |
a98cef7e | 147 | { |
17e90c5e | 148 | PUSH (SCM_MAKE_CHAR (FETCH ())); |
a98cef7e KN |
149 | NEXT; |
150 | } | |
151 | ||
23b587b0 | 152 | VM_DEFINE_INSTRUCTION (list, "list", 2, -1, 1) |
cb4cca12 | 153 | { |
23b587b0 LC |
154 | unsigned h = FETCH (); |
155 | unsigned l = FETCH (); | |
156 | unsigned len = ((h << 8) + l); | |
157 | POP_LIST (len); | |
cb4cca12 KN |
158 | NEXT; |
159 | } | |
160 | ||
23b587b0 | 161 | VM_DEFINE_INSTRUCTION (vector, "vector", 2, -1, 1) |
cb4cca12 | 162 | { |
23b587b0 LC |
163 | unsigned h = FETCH (); |
164 | unsigned l = FETCH (); | |
165 | unsigned len = ((h << 8) + l); | |
166 | POP_LIST (len); | |
cb4cca12 KN |
167 | *sp = scm_vector (*sp); |
168 | NEXT; | |
169 | } | |
170 | ||
171 | VM_DEFINE_INSTRUCTION (list_mark, "list-mark", 0, 0, 0) | |
172 | { | |
173 | POP_LIST_MARK (); | |
174 | NEXT; | |
175 | } | |
176 | ||
177 | VM_DEFINE_INSTRUCTION (vector_mark, "vector-mark", 0, 0, 0) | |
178 | { | |
179 | POP_LIST_MARK (); | |
180 | *sp = scm_vector (*sp); | |
181 | NEXT; | |
182 | } | |
183 | ||
184 | VM_DEFINE_INSTRUCTION (list_break, "list-break", 0, 0, 0) | |
185 | { | |
186 | SCM l; | |
187 | POP (l); | |
188 | for (; !SCM_NULLP (l); l = SCM_CDR (l)) | |
189 | PUSH (SCM_CAR (l)); | |
190 | NEXT; | |
191 | } | |
192 | ||
a98cef7e KN |
193 | \f |
194 | /* | |
17e90c5e | 195 | * Variable access |
a98cef7e KN |
196 | */ |
197 | ||
17e90c5e KN |
198 | #define OBJECT_REF(i) objects[i] |
199 | #define OBJECT_SET(i,o) objects[i] = o | |
a98cef7e | 200 | |
af988bbf KN |
201 | #define LOCAL_REF(i) SCM_FRAME_VARIABLE (fp, i) |
202 | #define LOCAL_SET(i,o) SCM_FRAME_VARIABLE (fp, i) = o | |
a98cef7e | 203 | |
2d80426a LC |
204 | /* For the variable operations, we _must_ obviously avoid function calls to |
205 | `scm_variable_ref ()', `scm_variable_bound_p ()' and friends which do | |
206 | nothing more than the corresponding macros. */ | |
207 | #define VARIABLE_REF(v) SCM_VARIABLE_REF (v) | |
208 | #define VARIABLE_SET(v,o) SCM_VARIABLE_SET (v, o) | |
209 | #define VARIABLE_BOUNDP(v) (VARIABLE_REF (v) != SCM_UNDEFINED) | |
a98cef7e | 210 | |
17e90c5e | 211 | /* ref */ |
a98cef7e | 212 | |
46cd9a34 | 213 | VM_DEFINE_INSTRUCTION (object_ref, "object-ref", 1, 0, 1) |
a98cef7e | 214 | { |
a52b2d3d | 215 | register unsigned objnum = FETCH (); |
0b5f0e49 LC |
216 | CHECK_OBJECT (objnum); |
217 | PUSH (OBJECT_REF (objnum)); | |
17e90c5e | 218 | NEXT; |
a98cef7e KN |
219 | } |
220 | ||
46cd9a34 | 221 | VM_DEFINE_INSTRUCTION (local_ref, "local-ref", 1, 0, 1) |
a98cef7e | 222 | { |
17e90c5e KN |
223 | PUSH (LOCAL_REF (FETCH ())); |
224 | NEXT; | |
a98cef7e KN |
225 | } |
226 | ||
46cd9a34 | 227 | VM_DEFINE_INSTRUCTION (external_ref, "external-ref", 1, 0, 1) |
a98cef7e | 228 | { |
17e90c5e KN |
229 | unsigned int i; |
230 | SCM e = external; | |
231 | for (i = FETCH (); i; i--) | |
2a63758b KN |
232 | { |
233 | CHECK_EXTERNAL(e); | |
234 | e = SCM_CDR (e); | |
235 | } | |
236 | CHECK_EXTERNAL(e); | |
17e90c5e | 237 | PUSH (SCM_CAR (e)); |
a98cef7e KN |
238 | NEXT; |
239 | } | |
240 | ||
46cd9a34 | 241 | VM_DEFINE_INSTRUCTION (variable_ref, "variable-ref", 0, 0, 1) |
a98cef7e | 242 | { |
17e90c5e | 243 | SCM x = *sp; |
238e7a11 | 244 | |
2d80426a | 245 | if (!VARIABLE_BOUNDP (x)) |
17e90c5e | 246 | { |
238e7a11 LC |
247 | err_args = SCM_LIST1 (x); |
248 | /* Was: err_args = SCM_LIST1 (SCM_CAR (x)); */ | |
17e90c5e KN |
249 | goto vm_error_unbound; |
250 | } | |
238e7a11 LC |
251 | else |
252 | { | |
2d80426a | 253 | SCM o = VARIABLE_REF (x); |
238e7a11 LC |
254 | *sp = o; |
255 | } | |
256 | ||
a98cef7e KN |
257 | NEXT; |
258 | } | |
259 | ||
9cc649b8 AW |
260 | VM_DEFINE_INSTRUCTION (late_variable_ref, "late-variable-ref", 1, 0, 1) |
261 | { | |
6297d229 AW |
262 | unsigned objnum = FETCH (); |
263 | SCM pair_or_var; | |
9cc649b8 | 264 | CHECK_OBJECT (objnum); |
6297d229 | 265 | pair_or_var = OBJECT_REF (objnum); |
9cc649b8 | 266 | |
6297d229 | 267 | if (!SCM_VARIABLEP (pair_or_var)) |
9cc649b8 | 268 | { |
6287726a | 269 | SYNC_BEFORE_GC (); |
6297d229 AW |
270 | SCM mod = scm_resolve_module (SCM_CAR (pair_or_var)); |
271 | /* module_lookup might longjmp */ | |
272 | pair_or_var = scm_module_lookup (mod, SCM_CDR (pair_or_var)); | |
273 | OBJECT_SET (objnum, pair_or_var); | |
274 | if (!VARIABLE_BOUNDP (pair_or_var)) | |
9cc649b8 | 275 | { |
6297d229 | 276 | err_args = SCM_LIST1 (pair_or_var); |
9cc649b8 AW |
277 | goto vm_error_unbound; |
278 | } | |
279 | } | |
280 | ||
6297d229 | 281 | PUSH (VARIABLE_REF (pair_or_var)); |
9cc649b8 AW |
282 | NEXT; |
283 | } | |
284 | ||
17e90c5e KN |
285 | /* set */ |
286 | ||
46cd9a34 | 287 | VM_DEFINE_INSTRUCTION (local_set, "local-set", 1, 1, 0) |
a98cef7e | 288 | { |
17e90c5e KN |
289 | LOCAL_SET (FETCH (), *sp); |
290 | DROP (); | |
a98cef7e KN |
291 | NEXT; |
292 | } | |
293 | ||
46cd9a34 | 294 | VM_DEFINE_INSTRUCTION (external_set, "external-set", 1, 1, 0) |
a98cef7e | 295 | { |
17e90c5e KN |
296 | unsigned int i; |
297 | SCM e = external; | |
298 | for (i = FETCH (); i; i--) | |
ac02b386 KN |
299 | { |
300 | CHECK_EXTERNAL(e); | |
301 | e = SCM_CDR (e); | |
302 | } | |
303 | CHECK_EXTERNAL(e); | |
17e90c5e KN |
304 | SCM_SETCAR (e, *sp); |
305 | DROP (); | |
a98cef7e KN |
306 | NEXT; |
307 | } | |
308 | ||
46cd9a34 | 309 | VM_DEFINE_INSTRUCTION (variable_set, "variable-set", 0, 1, 0) |
a98cef7e | 310 | { |
2d80426a | 311 | VARIABLE_SET (sp[0], sp[-1]); |
3616e9e9 KN |
312 | scm_set_object_property_x (sp[-1], scm_sym_name, SCM_CAR (sp[0])); |
313 | sp -= 2; | |
a98cef7e KN |
314 | NEXT; |
315 | } | |
316 | ||
9cc649b8 AW |
317 | VM_DEFINE_INSTRUCTION (late_variable_set, "late-variable-set", 1, 1, 0) |
318 | { | |
6297d229 AW |
319 | unsigned objnum = FETCH (); |
320 | SCM pair_or_var; | |
9cc649b8 | 321 | CHECK_OBJECT (objnum); |
6297d229 | 322 | pair_or_var = OBJECT_REF (objnum); |
9cc649b8 | 323 | |
6297d229 | 324 | if (!SCM_VARIABLEP (pair_or_var)) |
9cc649b8 | 325 | { |
6287726a | 326 | SYNC_BEFORE_GC (); |
6297d229 AW |
327 | SCM mod = scm_resolve_module (SCM_CAR (pair_or_var)); |
328 | /* module_lookup might longjmp */ | |
329 | pair_or_var = scm_module_lookup (mod, SCM_CDR (pair_or_var)); | |
330 | OBJECT_SET (objnum, pair_or_var); | |
9cc649b8 AW |
331 | } |
332 | ||
6297d229 | 333 | VARIABLE_SET (pair_or_var, *sp); |
9cc649b8 AW |
334 | DROP (); |
335 | NEXT; | |
336 | } | |
337 | ||
a98cef7e KN |
338 | \f |
339 | /* | |
340 | * branch and jump | |
341 | */ | |
342 | ||
17e90c5e KN |
343 | #define BR(p) \ |
344 | { \ | |
41f248a8 KN |
345 | int h = FETCH (); \ |
346 | int l = FETCH (); \ | |
347 | signed short offset = (h << 8) + l; \ | |
17e90c5e KN |
348 | if (p) \ |
349 | ip += offset; \ | |
350 | DROP (); \ | |
351 | NEXT; \ | |
352 | } | |
353 | ||
41f248a8 KN |
354 | VM_DEFINE_INSTRUCTION (br, "br", 2, 0, 0) |
355 | { | |
356 | int h = FETCH (); | |
357 | int l = FETCH (); | |
358 | ip += (signed short) (h << 8) + l; | |
359 | NEXT; | |
360 | } | |
361 | ||
362 | VM_DEFINE_INSTRUCTION (br_if, "br-if", 2, 0, 0) | |
a98cef7e | 363 | { |
17e90c5e | 364 | BR (!SCM_FALSEP (*sp)); |
a98cef7e KN |
365 | } |
366 | ||
41f248a8 | 367 | VM_DEFINE_INSTRUCTION (br_if_not, "br-if-not", 2, 0, 0) |
a98cef7e | 368 | { |
17e90c5e | 369 | BR (SCM_FALSEP (*sp)); |
a98cef7e KN |
370 | } |
371 | ||
41f248a8 | 372 | VM_DEFINE_INSTRUCTION (br_if_eq, "br-if-eq", 2, 0, 0) |
a98cef7e | 373 | { |
17e90c5e | 374 | BR (SCM_EQ_P (sp[0], sp--[1])); |
a98cef7e KN |
375 | } |
376 | ||
41f248a8 | 377 | VM_DEFINE_INSTRUCTION (br_if_not_eq, "br-if-not-eq", 2, 0, 0) |
a98cef7e | 378 | { |
17e90c5e KN |
379 | BR (!SCM_EQ_P (sp[0], sp--[1])); |
380 | } | |
381 | ||
41f248a8 | 382 | VM_DEFINE_INSTRUCTION (br_if_null, "br-if-null", 2, 0, 0) |
17e90c5e KN |
383 | { |
384 | BR (SCM_NULLP (*sp)); | |
385 | } | |
386 | ||
41f248a8 | 387 | VM_DEFINE_INSTRUCTION (br_if_not_null, "br-if-not-null", 2, 0, 0) |
17e90c5e KN |
388 | { |
389 | BR (!SCM_NULLP (*sp)); | |
a98cef7e KN |
390 | } |
391 | ||
a98cef7e KN |
392 | \f |
393 | /* | |
394 | * Subprogram call | |
395 | */ | |
396 | ||
46cd9a34 | 397 | VM_DEFINE_INSTRUCTION (make_closure, "make-closure", 0, 1, 1) |
a98cef7e | 398 | { |
3d5ee0cd KN |
399 | SYNC_BEFORE_GC (); |
400 | *sp = scm_c_make_closure (*sp, external); | |
17e90c5e | 401 | NEXT; |
a98cef7e KN |
402 | } |
403 | ||
46cd9a34 | 404 | VM_DEFINE_INSTRUCTION (call, "call", 1, -1, 1) |
a98cef7e | 405 | { |
3616e9e9 | 406 | SCM x; |
17e90c5e | 407 | nargs = FETCH (); |
a98cef7e KN |
408 | |
409 | vm_call: | |
c8b9df71 KN |
410 | x = sp[-nargs]; |
411 | ||
a98cef7e KN |
412 | /* |
413 | * Subprogram call | |
414 | */ | |
3616e9e9 | 415 | if (SCM_PROGRAM_P (x)) |
a98cef7e | 416 | { |
3616e9e9 | 417 | program = x; |
3d5ee0cd | 418 | vm_call_program: |
499a4c07 | 419 | CACHE_PROGRAM (); |
17e90c5e KN |
420 | INIT_ARGS (); |
421 | NEW_FRAME (); | |
17e90c5e KN |
422 | ENTER_HOOK (); |
423 | APPLY_HOOK (); | |
a98cef7e KN |
424 | NEXT; |
425 | } | |
d507b25f AW |
426 | #ifdef ENABLE_TRAMPOLINE |
427 | /* Seems to slow down the fibo test, dunno why */ | |
a98cef7e | 428 | /* |
659b4611 AW |
429 | * Subr call |
430 | */ | |
431 | switch (nargs) | |
432 | { | |
433 | case 0: | |
434 | { | |
435 | scm_t_trampoline_0 call = scm_trampoline_0 (x); | |
436 | if (call) | |
437 | { | |
438 | SYNC_ALL (); | |
439 | *sp = call (x); | |
440 | NEXT; | |
441 | } | |
442 | break; | |
443 | } | |
444 | case 1: | |
445 | { | |
446 | scm_t_trampoline_1 call = scm_trampoline_1 (x); | |
447 | if (call) | |
448 | { | |
449 | SCM arg1; | |
450 | POP (arg1); | |
451 | SYNC_ALL (); | |
452 | *sp = call (x, arg1); | |
453 | NEXT; | |
454 | } | |
455 | break; | |
456 | } | |
457 | case 2: | |
458 | { | |
459 | scm_t_trampoline_2 call = scm_trampoline_2 (x); | |
460 | if (call) | |
461 | { | |
462 | SCM arg1, arg2; | |
463 | POP (arg2); | |
464 | POP (arg1); | |
465 | SYNC_ALL (); | |
466 | *sp = call (x, arg1, arg2); | |
467 | NEXT; | |
468 | } | |
469 | break; | |
470 | } | |
471 | } | |
d507b25f | 472 | #endif |
659b4611 AW |
473 | /* |
474 | * Other interpreted or compiled call | |
a98cef7e | 475 | */ |
3616e9e9 | 476 | if (!SCM_FALSEP (scm_procedure_p (x))) |
a98cef7e | 477 | { |
f41cb00c LC |
478 | /* At this point, the stack contains the procedure and each one of its |
479 | arguments. */ | |
f21dfea6 | 480 | SCM args; |
17e90c5e | 481 | POP_LIST (nargs); |
f21dfea6 | 482 | POP (args); |
1865ad56 | 483 | SYNC_REGISTER (); |
f21dfea6 | 484 | *sp = scm_apply (x, args, SCM_EOL); |
17e90c5e | 485 | NEXT; |
a98cef7e KN |
486 | } |
487 | /* | |
488 | * Continuation call | |
489 | */ | |
3616e9e9 | 490 | if (SCM_VM_CONT_P (x)) |
a98cef7e KN |
491 | { |
492 | vm_call_cc: | |
493 | /* Check the number of arguments */ | |
382693fe | 494 | if (nargs != 1) |
3616e9e9 | 495 | scm_wrong_num_args (x); |
a98cef7e KN |
496 | |
497 | /* Reinstate the continuation */ | |
17e90c5e | 498 | EXIT_HOOK (); |
3616e9e9 | 499 | reinstate_vm_cont (vp, x); |
3d5ee0cd | 500 | CACHE_REGISTER (); |
af988bbf | 501 | program = SCM_FRAME_PROGRAM (fp); |
3616e9e9 | 502 | CACHE_PROGRAM (); |
a98cef7e KN |
503 | NEXT; |
504 | } | |
505 | ||
66292535 | 506 | program = x; |
17e90c5e | 507 | goto vm_error_wrong_type_apply; |
a98cef7e KN |
508 | } |
509 | ||
46cd9a34 | 510 | VM_DEFINE_INSTRUCTION (tail_call, "tail-call", 1, -1, 1) |
a98cef7e | 511 | { |
f41cb00c | 512 | register SCM x; |
17e90c5e | 513 | nargs = FETCH (); |
3616e9e9 | 514 | x = sp[-nargs]; |
17e90c5e KN |
515 | |
516 | SCM_TICK; /* allow interrupt here */ | |
a98cef7e KN |
517 | |
518 | /* | |
17e90c5e | 519 | * Tail recursive call |
a98cef7e | 520 | */ |
17e90c5e | 521 | if (SCM_EQ_P (x, program)) |
a98cef7e | 522 | { |
f21dfea6 | 523 | int i; |
17e90c5e KN |
524 | |
525 | /* Move arguments */ | |
f21dfea6 KN |
526 | INIT_ARGS (); |
527 | sp -= bp->nargs - 1; | |
528 | for (i = 0; i < bp->nargs; i++) | |
529 | LOCAL_SET (i, sp[i]); | |
f41cb00c LC |
530 | |
531 | /* Drop the first argument and the program itself. */ | |
532 | sp -= 2; | |
a98cef7e | 533 | |
f21dfea6 | 534 | /* Call itself */ |
17e90c5e | 535 | ip = bp->base; |
17e90c5e | 536 | APPLY_HOOK (); |
a98cef7e KN |
537 | NEXT; |
538 | } | |
17e90c5e KN |
539 | /* |
540 | * Proper tail call | |
541 | */ | |
3616e9e9 | 542 | if (SCM_PROGRAM_P (x)) |
17e90c5e | 543 | { |
17e90c5e KN |
544 | EXIT_HOOK (); |
545 | FREE_FRAME (); | |
3616e9e9 | 546 | program = x; |
3d5ee0cd | 547 | goto vm_call_program; |
17e90c5e | 548 | } |
d507b25f AW |
549 | #ifdef ENABLE_TRAMPOLINE |
550 | /* This seems to actually slow down the fibo test -- dunno why */ | |
a98cef7e | 551 | /* |
659b4611 AW |
552 | * Subr call |
553 | */ | |
554 | switch (nargs) | |
555 | { | |
556 | case 0: | |
557 | { | |
558 | scm_t_trampoline_0 call = scm_trampoline_0 (x); | |
559 | if (call) | |
560 | { | |
561 | SYNC_ALL (); | |
562 | *sp = call (x); | |
563 | goto vm_return; | |
564 | } | |
565 | break; | |
566 | } | |
567 | case 1: | |
568 | { | |
569 | scm_t_trampoline_1 call = scm_trampoline_1 (x); | |
570 | if (call) | |
571 | { | |
572 | SCM arg1; | |
573 | POP (arg1); | |
574 | SYNC_ALL (); | |
575 | *sp = call (x, arg1); | |
576 | goto vm_return; | |
577 | } | |
578 | break; | |
579 | } | |
580 | case 2: | |
581 | { | |
582 | scm_t_trampoline_2 call = scm_trampoline_2 (x); | |
583 | if (call) | |
584 | { | |
585 | SCM arg1, arg2; | |
586 | POP (arg2); | |
587 | POP (arg1); | |
588 | SYNC_ALL (); | |
589 | *sp = call (x, arg1, arg2); | |
590 | goto vm_return; | |
591 | } | |
592 | break; | |
593 | } | |
594 | } | |
d507b25f | 595 | #endif |
659b4611 AW |
596 | |
597 | /* | |
598 | * Other interpreted or compiled call | |
a98cef7e | 599 | */ |
3616e9e9 | 600 | if (!SCM_FALSEP (scm_procedure_p (x))) |
a98cef7e | 601 | { |
f21dfea6 | 602 | SCM args; |
17e90c5e | 603 | POP_LIST (nargs); |
f21dfea6 | 604 | POP (args); |
1865ad56 | 605 | SYNC_REGISTER (); |
f21dfea6 | 606 | *sp = scm_apply (x, args, SCM_EOL); |
a98cef7e KN |
607 | goto vm_return; |
608 | } | |
609 | /* | |
610 | * Continuation call | |
611 | */ | |
3616e9e9 | 612 | if (SCM_VM_CONT_P (x)) |
a98cef7e KN |
613 | goto vm_call_cc; |
614 | ||
66292535 | 615 | program = x; |
17e90c5e KN |
616 | goto vm_error_wrong_type_apply; |
617 | } | |
618 | ||
3616e9e9 KN |
619 | VM_DEFINE_INSTRUCTION (apply, "apply", 1, -1, 1) |
620 | { | |
c8b9df71 KN |
621 | int len; |
622 | SCM ls; | |
623 | POP (ls); | |
624 | ||
625 | nargs = FETCH (); | |
626 | if (nargs < 2) | |
627 | goto vm_error_wrong_num_args; | |
628 | ||
629 | len = scm_ilength (ls); | |
630 | if (len < 0) | |
631 | goto vm_error_wrong_type_arg; | |
632 | ||
633 | for (; !SCM_NULLP (ls); ls = SCM_CDR (ls)) | |
634 | PUSH (SCM_CAR (ls)); | |
635 | ||
636 | nargs += len - 2; | |
637 | goto vm_call; | |
3616e9e9 KN |
638 | } |
639 | ||
46cd9a34 | 640 | VM_DEFINE_INSTRUCTION (call_cc, "call/cc", 1, 1, 1) |
17e90c5e | 641 | { |
3d5ee0cd KN |
642 | SYNC_BEFORE_GC (); |
643 | PUSH (capture_vm_cont (vp)); | |
17e90c5e KN |
644 | POP (program); |
645 | nargs = 1; | |
646 | goto vm_call; | |
a98cef7e KN |
647 | } |
648 | ||
46cd9a34 | 649 | VM_DEFINE_INSTRUCTION (return, "return", 0, 0, 1) |
a98cef7e | 650 | { |
a98cef7e | 651 | vm_return: |
17e90c5e KN |
652 | EXIT_HOOK (); |
653 | RETURN_HOOK (); | |
654 | FREE_FRAME (); | |
655 | ||
15df3447 | 656 | /* Restore the last program */ |
af988bbf | 657 | program = SCM_FRAME_PROGRAM (fp); |
499a4c07 | 658 | CACHE_PROGRAM (); |
af988bbf | 659 | CACHE_EXTERNAL (); |
a98cef7e KN |
660 | NEXT; |
661 | } | |
17e90c5e | 662 | |
17e90c5e KN |
663 | /* |
664 | Local Variables: | |
665 | c-file-style: "gnu" | |
666 | End: | |
667 | */ |