Commit | Line | Data |
---|---|---|
53e28ed9 | 1 | /* Copyright (C) 2001,2008,2009 Free Software Foundation, Inc. |
a98cef7e | 2 | * |
53e28ed9 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 | |
5 | * License as published by the Free Software Foundation; either | |
6 | * version 2.1 of the License, or (at your option) any later version. | |
a98cef7e | 7 | * |
53e28ed9 AW |
8 | * This library 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 GNU | |
11 | * Lesser General Public License for more details. | |
a98cef7e | 12 | * |
53e28ed9 AW |
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 02110-1301 USA | |
16 | */ | |
17 | ||
a98cef7e KN |
18 | |
19 | /* This file is included in vm_engine.c */ | |
20 | ||
a98cef7e KN |
21 | \f |
22 | /* | |
23 | * Basic operations | |
24 | */ | |
25 | ||
53e28ed9 | 26 | VM_DEFINE_INSTRUCTION (0, nop, "nop", 0, 0, 0) |
a98cef7e KN |
27 | { |
28 | NEXT; | |
29 | } | |
30 | ||
53e28ed9 | 31 | VM_DEFINE_INSTRUCTION (1, halt, "halt", 0, 0, 0) |
a98cef7e | 32 | { |
3d5ee0cd | 33 | vp->time += scm_c_get_internal_run_time () - start_time; |
17e90c5e | 34 | HALT_HOOK (); |
a222b0fa | 35 | nvalues = SCM_I_INUM (*sp--); |
11ea1aba | 36 | NULLSTACK (1); |
a222b0fa | 37 | if (nvalues == 1) |
e06e857c | 38 | POP (finish_args); |
a222b0fa AW |
39 | else |
40 | { | |
41 | POP_LIST (nvalues); | |
e06e857c | 42 | POP (finish_args); |
877ffa3f | 43 | SYNC_REGISTER (); |
e06e857c | 44 | finish_args = scm_values (finish_args); |
a222b0fa AW |
45 | } |
46 | ||
1dc8f851 | 47 | { |
11ea1aba AW |
48 | ASSERT (sp == stack_base); |
49 | ASSERT (stack_base == SCM_FRAME_UPPER_ADDRESS (fp) - 1); | |
1dc8f851 AW |
50 | |
51 | /* Restore registers */ | |
52 | sp = SCM_FRAME_LOWER_ADDRESS (fp) - 1; | |
53 | ip = NULL; | |
54 | fp = SCM_FRAME_DYNAMIC_LINK (fp); | |
11ea1aba | 55 | NULLSTACK (stack_base - sp); |
1dc8f851 | 56 | } |
e06e857c AW |
57 | |
58 | goto vm_done; | |
a98cef7e KN |
59 | } |
60 | ||
53e28ed9 | 61 | VM_DEFINE_INSTRUCTION (2, break, "break", 0, 0, 0) |
7a0d0cee KN |
62 | { |
63 | BREAK_HOOK (); | |
64 | NEXT; | |
65 | } | |
66 | ||
131f7d6c | 67 | VM_DEFINE_INSTRUCTION (3, drop, "drop", 0, 1, 0) |
a98cef7e | 68 | { |
17e90c5e | 69 | DROP (); |
a98cef7e KN |
70 | NEXT; |
71 | } | |
72 | ||
53e28ed9 | 73 | VM_DEFINE_INSTRUCTION (4, mark, "mark", 0, 0, 1) |
cb4cca12 KN |
74 | { |
75 | PUSH (SCM_UNDEFINED); | |
76 | NEXT; | |
77 | } | |
78 | ||
53e28ed9 | 79 | VM_DEFINE_INSTRUCTION (5, dup, "dup", 0, 0, 1) |
26403690 | 80 | { |
f349065e KN |
81 | SCM x = *sp; |
82 | PUSH (x); | |
26403690 KN |
83 | NEXT; |
84 | } | |
85 | ||
17e90c5e KN |
86 | \f |
87 | /* | |
88 | * Object creation | |
89 | */ | |
a98cef7e | 90 | |
53e28ed9 | 91 | VM_DEFINE_INSTRUCTION (6, void, "void", 0, 0, 1) |
a98cef7e | 92 | { |
17e90c5e | 93 | PUSH (SCM_UNSPECIFIED); |
a98cef7e KN |
94 | NEXT; |
95 | } | |
96 | ||
53e28ed9 | 97 | VM_DEFINE_INSTRUCTION (7, make_true, "make-true", 0, 0, 1) |
a98cef7e | 98 | { |
17e90c5e | 99 | PUSH (SCM_BOOL_T); |
a98cef7e KN |
100 | NEXT; |
101 | } | |
102 | ||
53e28ed9 | 103 | VM_DEFINE_INSTRUCTION (8, make_false, "make-false", 0, 0, 1) |
a98cef7e | 104 | { |
17e90c5e | 105 | PUSH (SCM_BOOL_F); |
a98cef7e KN |
106 | NEXT; |
107 | } | |
108 | ||
53e28ed9 | 109 | VM_DEFINE_INSTRUCTION (9, make_eol, "make-eol", 0, 0, 1) |
a98cef7e | 110 | { |
17e90c5e | 111 | PUSH (SCM_EOL); |
a98cef7e KN |
112 | NEXT; |
113 | } | |
114 | ||
53e28ed9 | 115 | VM_DEFINE_INSTRUCTION (10, make_int8, "make-int8", 1, 0, 1) |
a98cef7e | 116 | { |
2d80426a | 117 | PUSH (SCM_I_MAKINUM ((signed char) FETCH ())); |
a98cef7e KN |
118 | NEXT; |
119 | } | |
120 | ||
53e28ed9 | 121 | VM_DEFINE_INSTRUCTION (11, make_int8_0, "make-int8:0", 0, 0, 1) |
a98cef7e | 122 | { |
238e7a11 | 123 | PUSH (SCM_INUM0); |
a98cef7e KN |
124 | NEXT; |
125 | } | |
126 | ||
53e28ed9 | 127 | VM_DEFINE_INSTRUCTION (12, make_int8_1, "make-int8:1", 0, 0, 1) |
a98cef7e | 128 | { |
238e7a11 | 129 | PUSH (SCM_I_MAKINUM (1)); |
a98cef7e KN |
130 | NEXT; |
131 | } | |
132 | ||
53e28ed9 | 133 | VM_DEFINE_INSTRUCTION (13, make_int16, "make-int16", 2, 0, 1) |
a98cef7e | 134 | { |
ea9b4b29 KN |
135 | int h = FETCH (); |
136 | int l = FETCH (); | |
2d80426a | 137 | PUSH (SCM_I_MAKINUM ((signed short) (h << 8) + l)); |
a98cef7e KN |
138 | NEXT; |
139 | } | |
140 | ||
53e28ed9 | 141 | VM_DEFINE_INSTRUCTION (14, make_char8, "make-char8", 1, 0, 1) |
a98cef7e | 142 | { |
17e90c5e | 143 | PUSH (SCM_MAKE_CHAR (FETCH ())); |
a98cef7e KN |
144 | NEXT; |
145 | } | |
146 | ||
53e28ed9 | 147 | VM_DEFINE_INSTRUCTION (15, list, "list", 2, -1, 1) |
cb4cca12 | 148 | { |
23b587b0 LC |
149 | unsigned h = FETCH (); |
150 | unsigned l = FETCH (); | |
151 | unsigned len = ((h << 8) + l); | |
152 | POP_LIST (len); | |
cb4cca12 KN |
153 | NEXT; |
154 | } | |
155 | ||
53e28ed9 | 156 | VM_DEFINE_INSTRUCTION (16, vector, "vector", 2, -1, 1) |
cb4cca12 | 157 | { |
23b587b0 LC |
158 | unsigned h = FETCH (); |
159 | unsigned l = FETCH (); | |
160 | unsigned len = ((h << 8) + l); | |
5338b62b AW |
161 | SCM vect; |
162 | ||
877ffa3f | 163 | SYNC_REGISTER (); |
5338b62b AW |
164 | sp++; sp -= len; |
165 | CHECK_UNDERFLOW (); | |
166 | vect = scm_make_vector (scm_from_uint (len), SCM_BOOL_F); | |
167 | memcpy (SCM_I_VECTOR_WELTS(vect), sp, sizeof(SCM) * len); | |
168 | NULLSTACK (len); | |
169 | *sp = vect; | |
170 | ||
cb4cca12 KN |
171 | NEXT; |
172 | } | |
173 | ||
53e28ed9 | 174 | VM_DEFINE_INSTRUCTION (17, list_mark, "list-mark", 0, 0, 0) |
cb4cca12 KN |
175 | { |
176 | POP_LIST_MARK (); | |
177 | NEXT; | |
178 | } | |
179 | ||
53e28ed9 | 180 | VM_DEFINE_INSTRUCTION (18, cons_mark, "cons-mark", 0, 0, 0) |
2bd859c8 AW |
181 | { |
182 | POP_CONS_MARK (); | |
183 | NEXT; | |
184 | } | |
185 | ||
53e28ed9 | 186 | VM_DEFINE_INSTRUCTION (19, vector_mark, "vector-mark", 0, 0, 0) |
cb4cca12 KN |
187 | { |
188 | POP_LIST_MARK (); | |
877ffa3f | 189 | SYNC_REGISTER (); |
cb4cca12 KN |
190 | *sp = scm_vector (*sp); |
191 | NEXT; | |
192 | } | |
193 | ||
53e28ed9 | 194 | VM_DEFINE_INSTRUCTION (20, list_break, "list-break", 0, 0, 0) |
cb4cca12 KN |
195 | { |
196 | SCM l; | |
197 | POP (l); | |
fb10a008 | 198 | PUSH_LIST (l, SCM_NULLP); |
cb4cca12 KN |
199 | NEXT; |
200 | } | |
201 | ||
a98cef7e KN |
202 | \f |
203 | /* | |
17e90c5e | 204 | * Variable access |
a98cef7e KN |
205 | */ |
206 | ||
17e90c5e KN |
207 | #define OBJECT_REF(i) objects[i] |
208 | #define OBJECT_SET(i,o) objects[i] = o | |
a98cef7e | 209 | |
af988bbf KN |
210 | #define LOCAL_REF(i) SCM_FRAME_VARIABLE (fp, i) |
211 | #define LOCAL_SET(i,o) SCM_FRAME_VARIABLE (fp, i) = o | |
a98cef7e | 212 | |
2d80426a LC |
213 | /* For the variable operations, we _must_ obviously avoid function calls to |
214 | `scm_variable_ref ()', `scm_variable_bound_p ()' and friends which do | |
215 | nothing more than the corresponding macros. */ | |
216 | #define VARIABLE_REF(v) SCM_VARIABLE_REF (v) | |
217 | #define VARIABLE_SET(v,o) SCM_VARIABLE_SET (v, o) | |
218 | #define VARIABLE_BOUNDP(v) (VARIABLE_REF (v) != SCM_UNDEFINED) | |
a98cef7e | 219 | |
17e90c5e | 220 | /* ref */ |
a98cef7e | 221 | |
53e28ed9 | 222 | VM_DEFINE_INSTRUCTION (21, object_ref, "object-ref", 1, 0, 1) |
a98cef7e | 223 | { |
a52b2d3d | 224 | register unsigned objnum = FETCH (); |
0b5f0e49 LC |
225 | CHECK_OBJECT (objnum); |
226 | PUSH (OBJECT_REF (objnum)); | |
17e90c5e | 227 | NEXT; |
a98cef7e KN |
228 | } |
229 | ||
53e28ed9 | 230 | VM_DEFINE_INSTRUCTION (22, local_ref, "local-ref", 1, 0, 1) |
a98cef7e | 231 | { |
17e90c5e KN |
232 | PUSH (LOCAL_REF (FETCH ())); |
233 | NEXT; | |
a98cef7e KN |
234 | } |
235 | ||
53e28ed9 | 236 | VM_DEFINE_INSTRUCTION (23, external_ref, "external-ref", 1, 0, 1) |
a98cef7e | 237 | { |
17e90c5e KN |
238 | unsigned int i; |
239 | SCM e = external; | |
240 | for (i = FETCH (); i; i--) | |
2a63758b KN |
241 | { |
242 | CHECK_EXTERNAL(e); | |
243 | e = SCM_CDR (e); | |
244 | } | |
245 | CHECK_EXTERNAL(e); | |
17e90c5e | 246 | PUSH (SCM_CAR (e)); |
a98cef7e KN |
247 | NEXT; |
248 | } | |
249 | ||
53e28ed9 | 250 | VM_DEFINE_INSTRUCTION (24, variable_ref, "variable-ref", 0, 0, 1) |
a98cef7e | 251 | { |
17e90c5e | 252 | SCM x = *sp; |
238e7a11 | 253 | |
2d80426a | 254 | if (!VARIABLE_BOUNDP (x)) |
17e90c5e | 255 | { |
e06e857c AW |
256 | finish_args = SCM_LIST1 (x); |
257 | /* Was: finish_args = SCM_LIST1 (SCM_CAR (x)); */ | |
17e90c5e KN |
258 | goto vm_error_unbound; |
259 | } | |
238e7a11 LC |
260 | else |
261 | { | |
2d80426a | 262 | SCM o = VARIABLE_REF (x); |
238e7a11 LC |
263 | *sp = o; |
264 | } | |
265 | ||
a98cef7e KN |
266 | NEXT; |
267 | } | |
268 | ||
53e28ed9 | 269 | VM_DEFINE_INSTRUCTION (25, toplevel_ref, "toplevel-ref", 1, 0, 1) |
9cc649b8 | 270 | { |
6297d229 | 271 | unsigned objnum = FETCH (); |
fd358575 | 272 | SCM what; |
9cc649b8 | 273 | CHECK_OBJECT (objnum); |
fd358575 | 274 | what = OBJECT_REF (objnum); |
9cc649b8 | 275 | |
fd358575 | 276 | if (!SCM_VARIABLEP (what)) |
9cc649b8 | 277 | { |
d0168f3d | 278 | SYNC_REGISTER (); |
fd358575 | 279 | if (SCM_LIKELY (SCM_SYMBOLP (what))) |
3aabb7b7 | 280 | { |
2fda0242 | 281 | SCM mod; |
fd358575 | 282 | if (SCM_LIKELY (scm_module_system_booted_p |
2fda0242 | 283 | && scm_is_true ((mod = scm_program_module (program))))) |
fd358575 | 284 | /* might longjmp */ |
2fda0242 | 285 | what = scm_module_lookup (mod, what); |
fd358575 AW |
286 | else |
287 | what = scm_sym2var (what, SCM_BOOL_F, SCM_BOOL_F); | |
3aabb7b7 AW |
288 | } |
289 | else | |
290 | { | |
fd358575 AW |
291 | SCM mod; |
292 | /* compilation of @ or @@ | |
293 | `what' is a three-element list: (MODNAME SYM INTERFACE?) | |
294 | INTERFACE? is #t if we compiled @ or #f if we compiled @@ | |
295 | */ | |
296 | mod = scm_resolve_module (SCM_CAR (what)); | |
297 | if (scm_is_true (SCM_CADDR (what))) | |
298 | mod = scm_module_public_interface (mod); | |
299 | if (SCM_FALSEP (mod)) | |
300 | { | |
e06e857c | 301 | finish_args = SCM_LIST1 (mod); |
fd358575 AW |
302 | goto vm_error_no_such_module; |
303 | } | |
304 | /* might longjmp */ | |
305 | what = scm_module_lookup (mod, SCM_CADR (what)); | |
3aabb7b7 AW |
306 | } |
307 | ||
fd358575 | 308 | if (!VARIABLE_BOUNDP (what)) |
9cc649b8 | 309 | { |
e06e857c | 310 | finish_args = SCM_LIST1 (what); |
9cc649b8 AW |
311 | goto vm_error_unbound; |
312 | } | |
3aabb7b7 | 313 | |
fd358575 | 314 | OBJECT_SET (objnum, what); |
9cc649b8 AW |
315 | } |
316 | ||
fd358575 | 317 | PUSH (VARIABLE_REF (what)); |
9cc649b8 AW |
318 | NEXT; |
319 | } | |
320 | ||
17e90c5e KN |
321 | /* set */ |
322 | ||
53e28ed9 | 323 | VM_DEFINE_INSTRUCTION (26, local_set, "local-set", 1, 1, 0) |
a98cef7e | 324 | { |
17e90c5e KN |
325 | LOCAL_SET (FETCH (), *sp); |
326 | DROP (); | |
a98cef7e KN |
327 | NEXT; |
328 | } | |
329 | ||
53e28ed9 | 330 | VM_DEFINE_INSTRUCTION (27, external_set, "external-set", 1, 1, 0) |
a98cef7e | 331 | { |
17e90c5e KN |
332 | unsigned int i; |
333 | SCM e = external; | |
334 | for (i = FETCH (); i; i--) | |
ac02b386 KN |
335 | { |
336 | CHECK_EXTERNAL(e); | |
337 | e = SCM_CDR (e); | |
338 | } | |
339 | CHECK_EXTERNAL(e); | |
17e90c5e KN |
340 | SCM_SETCAR (e, *sp); |
341 | DROP (); | |
a98cef7e KN |
342 | NEXT; |
343 | } | |
344 | ||
53e28ed9 | 345 | VM_DEFINE_INSTRUCTION (28, variable_set, "variable-set", 0, 1, 0) |
a98cef7e | 346 | { |
2d80426a | 347 | VARIABLE_SET (sp[0], sp[-1]); |
11ea1aba | 348 | DROPN (2); |
a98cef7e KN |
349 | NEXT; |
350 | } | |
351 | ||
53e28ed9 | 352 | VM_DEFINE_INSTRUCTION (29, toplevel_set, "toplevel-set", 1, 1, 0) |
9cc649b8 | 353 | { |
6297d229 | 354 | unsigned objnum = FETCH (); |
fd358575 | 355 | SCM what; |
9cc649b8 | 356 | CHECK_OBJECT (objnum); |
fd358575 | 357 | what = OBJECT_REF (objnum); |
9cc649b8 | 358 | |
fd358575 | 359 | if (!SCM_VARIABLEP (what)) |
9cc649b8 | 360 | { |
6287726a | 361 | SYNC_BEFORE_GC (); |
fd358575 | 362 | if (SCM_LIKELY (SCM_SYMBOLP (what))) |
3aabb7b7 | 363 | { |
2fda0242 | 364 | SCM mod; |
fd358575 | 365 | if (SCM_LIKELY (scm_module_system_booted_p |
2fda0242 | 366 | && scm_is_true ((mod = scm_program_module (program))))) |
fd358575 | 367 | /* might longjmp */ |
2fda0242 | 368 | what = scm_module_lookup (mod, what); |
fd358575 AW |
369 | else |
370 | what = scm_sym2var (what, SCM_BOOL_F, SCM_BOOL_F); | |
3aabb7b7 AW |
371 | } |
372 | else | |
373 | { | |
fd358575 AW |
374 | SCM mod; |
375 | /* compilation of @ or @@ | |
376 | `what' is a three-element list: (MODNAME SYM INTERFACE?) | |
377 | INTERFACE? is #t if we compiled @ or #f if we compiled @@ | |
378 | */ | |
379 | mod = scm_resolve_module (SCM_CAR (what)); | |
380 | if (scm_is_true (SCM_CADDR (what))) | |
381 | mod = scm_module_public_interface (mod); | |
382 | if (SCM_FALSEP (mod)) | |
383 | { | |
e06e857c | 384 | finish_args = SCM_LIST1 (what); |
fd358575 AW |
385 | goto vm_error_no_such_module; |
386 | } | |
387 | /* might longjmp */ | |
388 | what = scm_module_lookup (mod, SCM_CADR (what)); | |
3aabb7b7 AW |
389 | } |
390 | ||
fd358575 | 391 | OBJECT_SET (objnum, what); |
9cc649b8 AW |
392 | } |
393 | ||
fd358575 | 394 | VARIABLE_SET (what, *sp); |
9cc649b8 AW |
395 | DROP (); |
396 | NEXT; | |
397 | } | |
398 | ||
53e28ed9 | 399 | VM_DEFINE_INSTRUCTION (30, externals, "externals", 0, 0, 1) |
3de80ed5 AW |
400 | { |
401 | PUSH (external); | |
402 | NEXT; | |
403 | } | |
404 | ||
a98cef7e KN |
405 | \f |
406 | /* | |
407 | * branch and jump | |
408 | */ | |
409 | ||
efbd5892 AW |
410 | /* offset must be a signed short!!! */ |
411 | #define FETCH_OFFSET(offset) \ | |
17e90c5e | 412 | { \ |
41f248a8 KN |
413 | int h = FETCH (); \ |
414 | int l = FETCH (); \ | |
efbd5892 AW |
415 | offset = (h << 8) + l; \ |
416 | } | |
417 | ||
418 | #define BR(p) \ | |
419 | { \ | |
420 | signed short offset; \ | |
421 | FETCH_OFFSET (offset); \ | |
17e90c5e KN |
422 | if (p) \ |
423 | ip += offset; \ | |
11ea1aba | 424 | NULLSTACK (1); \ |
17e90c5e KN |
425 | DROP (); \ |
426 | NEXT; \ | |
427 | } | |
428 | ||
53e28ed9 | 429 | VM_DEFINE_INSTRUCTION (31, br, "br", 2, 0, 0) |
41f248a8 KN |
430 | { |
431 | int h = FETCH (); | |
432 | int l = FETCH (); | |
433 | ip += (signed short) (h << 8) + l; | |
434 | NEXT; | |
435 | } | |
436 | ||
53e28ed9 | 437 | VM_DEFINE_INSTRUCTION (32, br_if, "br-if", 2, 0, 0) |
a98cef7e | 438 | { |
17e90c5e | 439 | BR (!SCM_FALSEP (*sp)); |
a98cef7e KN |
440 | } |
441 | ||
53e28ed9 | 442 | VM_DEFINE_INSTRUCTION (33, br_if_not, "br-if-not", 2, 0, 0) |
a98cef7e | 443 | { |
17e90c5e | 444 | BR (SCM_FALSEP (*sp)); |
a98cef7e KN |
445 | } |
446 | ||
53e28ed9 | 447 | VM_DEFINE_INSTRUCTION (34, br_if_eq, "br-if-eq", 2, 0, 0) |
a98cef7e | 448 | { |
17e90c5e | 449 | BR (SCM_EQ_P (sp[0], sp--[1])); |
a98cef7e KN |
450 | } |
451 | ||
53e28ed9 | 452 | VM_DEFINE_INSTRUCTION (35, br_if_not_eq, "br-if-not-eq", 2, 0, 0) |
a98cef7e | 453 | { |
17e90c5e KN |
454 | BR (!SCM_EQ_P (sp[0], sp--[1])); |
455 | } | |
456 | ||
53e28ed9 | 457 | VM_DEFINE_INSTRUCTION (36, br_if_null, "br-if-null", 2, 0, 0) |
17e90c5e KN |
458 | { |
459 | BR (SCM_NULLP (*sp)); | |
460 | } | |
461 | ||
53e28ed9 | 462 | VM_DEFINE_INSTRUCTION (37, br_if_not_null, "br-if-not-null", 2, 0, 0) |
17e90c5e KN |
463 | { |
464 | BR (!SCM_NULLP (*sp)); | |
a98cef7e KN |
465 | } |
466 | ||
a98cef7e KN |
467 | \f |
468 | /* | |
469 | * Subprogram call | |
470 | */ | |
471 | ||
53e28ed9 | 472 | VM_DEFINE_INSTRUCTION (38, make_closure, "make-closure", 0, 1, 1) |
a98cef7e | 473 | { |
3d5ee0cd | 474 | SYNC_BEFORE_GC (); |
7edf2001 AW |
475 | SCM_NEWSMOB3 (*sp, scm_tc16_program, SCM_PROGRAM_OBJCODE (*sp), |
476 | SCM_PROGRAM_OBJTABLE (*sp), external); | |
17e90c5e | 477 | NEXT; |
a98cef7e KN |
478 | } |
479 | ||
53e28ed9 | 480 | VM_DEFINE_INSTRUCTION (39, call, "call", 1, -1, 1) |
a98cef7e | 481 | { |
3616e9e9 | 482 | SCM x; |
17e90c5e | 483 | nargs = FETCH (); |
a98cef7e KN |
484 | |
485 | vm_call: | |
c8b9df71 KN |
486 | x = sp[-nargs]; |
487 | ||
e311f5fa AW |
488 | SYNC_REGISTER (); |
489 | SCM_TICK; /* allow interrupt here */ | |
490 | ||
a98cef7e KN |
491 | /* |
492 | * Subprogram call | |
493 | */ | |
3616e9e9 | 494 | if (SCM_PROGRAM_P (x)) |
a98cef7e | 495 | { |
3616e9e9 | 496 | program = x; |
499a4c07 | 497 | CACHE_PROGRAM (); |
17e90c5e KN |
498 | INIT_ARGS (); |
499 | NEW_FRAME (); | |
17e90c5e KN |
500 | ENTER_HOOK (); |
501 | APPLY_HOOK (); | |
a98cef7e KN |
502 | NEXT; |
503 | } | |
d507b25f AW |
504 | #ifdef ENABLE_TRAMPOLINE |
505 | /* Seems to slow down the fibo test, dunno why */ | |
a98cef7e | 506 | /* |
659b4611 AW |
507 | * Subr call |
508 | */ | |
509 | switch (nargs) | |
510 | { | |
511 | case 0: | |
512 | { | |
513 | scm_t_trampoline_0 call = scm_trampoline_0 (x); | |
514 | if (call) | |
515 | { | |
516 | SYNC_ALL (); | |
517 | *sp = call (x); | |
518 | NEXT; | |
519 | } | |
520 | break; | |
521 | } | |
522 | case 1: | |
523 | { | |
524 | scm_t_trampoline_1 call = scm_trampoline_1 (x); | |
525 | if (call) | |
526 | { | |
527 | SCM arg1; | |
528 | POP (arg1); | |
529 | SYNC_ALL (); | |
530 | *sp = call (x, arg1); | |
531 | NEXT; | |
532 | } | |
533 | break; | |
534 | } | |
535 | case 2: | |
536 | { | |
537 | scm_t_trampoline_2 call = scm_trampoline_2 (x); | |
538 | if (call) | |
539 | { | |
540 | SCM arg1, arg2; | |
541 | POP (arg2); | |
542 | POP (arg1); | |
543 | SYNC_ALL (); | |
544 | *sp = call (x, arg1, arg2); | |
545 | NEXT; | |
546 | } | |
547 | break; | |
548 | } | |
549 | } | |
d507b25f | 550 | #endif |
659b4611 AW |
551 | /* |
552 | * Other interpreted or compiled call | |
a98cef7e | 553 | */ |
3616e9e9 | 554 | if (!SCM_FALSEP (scm_procedure_p (x))) |
a98cef7e | 555 | { |
f41cb00c LC |
556 | /* At this point, the stack contains the procedure and each one of its |
557 | arguments. */ | |
17e90c5e | 558 | POP_LIST (nargs); |
1865ad56 | 559 | SYNC_REGISTER (); |
887ce75a AW |
560 | /* keep args on stack so they are marked */ |
561 | sp[-1] = scm_apply (x, sp[0], SCM_EOL); | |
66db076a | 562 | NULLSTACK_FOR_NONLOCAL_EXIT (); |
887ce75a | 563 | DROP (); |
42906d74 AW |
564 | if (SCM_UNLIKELY (SCM_VALUESP (*sp))) |
565 | { | |
566 | /* truncate values */ | |
567 | SCM values; | |
568 | POP (values); | |
569 | values = scm_struct_ref (values, SCM_INUM0); | |
570 | if (scm_is_null (values)) | |
571 | goto vm_error_not_enough_values; | |
572 | PUSH (SCM_CAR (values)); | |
573 | } | |
17e90c5e | 574 | NEXT; |
a98cef7e KN |
575 | } |
576 | /* | |
577 | * Continuation call | |
578 | */ | |
3616e9e9 | 579 | if (SCM_VM_CONT_P (x)) |
a98cef7e | 580 | { |
fcd4901b | 581 | program = x; |
f03c31db | 582 | vm_call_continuation: |
a98cef7e | 583 | /* Check the number of arguments */ |
f03c31db | 584 | /* FIXME multiple args */ |
382693fe | 585 | if (nargs != 1) |
fcd4901b | 586 | scm_wrong_num_args (program); |
a98cef7e KN |
587 | |
588 | /* Reinstate the continuation */ | |
17e90c5e | 589 | EXIT_HOOK (); |
fcd4901b | 590 | reinstate_vm_cont (vp, program); |
3d5ee0cd | 591 | CACHE_REGISTER (); |
af988bbf | 592 | program = SCM_FRAME_PROGRAM (fp); |
3616e9e9 | 593 | CACHE_PROGRAM (); |
a98cef7e KN |
594 | NEXT; |
595 | } | |
596 | ||
66292535 | 597 | program = x; |
17e90c5e | 598 | goto vm_error_wrong_type_apply; |
a98cef7e KN |
599 | } |
600 | ||
53e28ed9 | 601 | VM_DEFINE_INSTRUCTION (40, goto_args, "goto/args", 1, -1, 1) |
a98cef7e | 602 | { |
f41cb00c | 603 | register SCM x; |
17e90c5e | 604 | nargs = FETCH (); |
f03c31db | 605 | vm_goto_args: |
3616e9e9 | 606 | x = sp[-nargs]; |
17e90c5e | 607 | |
28a2f57b | 608 | SYNC_REGISTER (); |
17e90c5e | 609 | SCM_TICK; /* allow interrupt here */ |
a98cef7e KN |
610 | |
611 | /* | |
17e90c5e | 612 | * Tail recursive call |
a98cef7e | 613 | */ |
17e90c5e | 614 | if (SCM_EQ_P (x, program)) |
a98cef7e | 615 | { |
f21dfea6 | 616 | int i; |
17e90c5e KN |
617 | |
618 | /* Move arguments */ | |
f21dfea6 KN |
619 | INIT_ARGS (); |
620 | sp -= bp->nargs - 1; | |
621 | for (i = 0; i < bp->nargs; i++) | |
622 | LOCAL_SET (i, sp[i]); | |
f41cb00c LC |
623 | |
624 | /* Drop the first argument and the program itself. */ | |
625 | sp -= 2; | |
5e390de6 AW |
626 | NULLSTACK (bp->nargs + 1); |
627 | ||
628 | /* Freshen the externals */ | |
53e28ed9 | 629 | external = SCM_PROGRAM_EXTERNALS (x); |
5e390de6 AW |
630 | for (i = 0; i < bp->nexts; i++) |
631 | CONS (external, SCM_UNDEFINED, external); | |
632 | SCM_FRAME_DATA_ADDRESS (fp)[0] = external; | |
a98cef7e | 633 | |
f21dfea6 | 634 | /* Call itself */ |
17e90c5e | 635 | ip = bp->base; |
17e90c5e | 636 | APPLY_HOOK (); |
a98cef7e KN |
637 | NEXT; |
638 | } | |
28106f54 | 639 | |
17e90c5e | 640 | /* |
28106f54 | 641 | * Tail call, but not to self -- reuse the frame, keeping the ra and dl |
17e90c5e | 642 | */ |
3616e9e9 | 643 | if (SCM_PROGRAM_P (x)) |
17e90c5e | 644 | { |
28106f54 AW |
645 | SCM *data, *tail_args, *dl; |
646 | int i; | |
da320011 | 647 | scm_byte_t *ra, *mvra; |
11ea1aba AW |
648 | #ifdef VM_ENABLE_STACK_NULLING |
649 | SCM *old_sp; | |
650 | #endif | |
28106f54 | 651 | |
17e90c5e | 652 | EXIT_HOOK (); |
28106f54 AW |
653 | |
654 | /* save registers */ | |
655 | tail_args = stack_base + 2; | |
656 | ra = SCM_FRAME_RETURN_ADDRESS (fp); | |
da320011 | 657 | mvra = SCM_FRAME_MV_RETURN_ADDRESS (fp); |
28106f54 AW |
658 | dl = SCM_FRAME_DYNAMIC_LINK (fp); |
659 | ||
660 | /* switch programs */ | |
11ea1aba | 661 | program = x; |
28106f54 AW |
662 | CACHE_PROGRAM (); |
663 | INIT_ARGS (); | |
11ea1aba AW |
664 | /* delay updating the frame so that if INIT_ARGS has to cons up a rest |
665 | arg, going into GC, the stack still makes sense */ | |
666 | fp[-1] = program; | |
28106f54 AW |
667 | nargs = bp->nargs; |
668 | ||
11ea1aba AW |
669 | #ifdef VM_ENABLE_STACK_NULLING |
670 | old_sp = sp; | |
671 | CHECK_STACK_LEAK (); | |
672 | #endif | |
673 | ||
28106f54 AW |
674 | /* new registers -- logically this would be better later, but let's make |
675 | sure we have space for the locals now */ | |
676 | data = SCM_FRAME_DATA_ADDRESS (fp); | |
677 | ip = bp->base; | |
b1b942b7 | 678 | stack_base = data + 3; |
28106f54 AW |
679 | sp = stack_base; |
680 | CHECK_OVERFLOW (); | |
681 | ||
682 | /* copy args, bottom-up */ | |
683 | for (i = 0; i < nargs; i++) | |
684 | fp[i] = tail_args[i]; | |
685 | ||
11ea1aba AW |
686 | NULLSTACK (old_sp - sp); |
687 | ||
28106f54 AW |
688 | /* init locals */ |
689 | for (i = bp->nlocs; i; i--) | |
690 | data[-i] = SCM_UNDEFINED; | |
691 | ||
28106f54 | 692 | /* Set frame data */ |
b1b942b7 AW |
693 | data[3] = (SCM)ra; |
694 | data[2] = (SCM)mvra; | |
695 | data[1] = (SCM)dl; | |
11ea1aba AW |
696 | |
697 | /* Postpone initializing external vars, because if the CONS causes a GC, | |
698 | we want the stack marker to see the data array formatted as expected. */ | |
699 | data[0] = SCM_UNDEFINED; | |
53e28ed9 | 700 | external = SCM_PROGRAM_EXTERNALS (fp[-1]); |
11ea1aba AW |
701 | for (i = 0; i < bp->nexts; i++) |
702 | CONS (external, SCM_UNDEFINED, external); | |
28106f54 | 703 | data[0] = external; |
11ea1aba | 704 | |
28106f54 AW |
705 | ENTER_HOOK (); |
706 | APPLY_HOOK (); | |
707 | NEXT; | |
17e90c5e | 708 | } |
d507b25f AW |
709 | #ifdef ENABLE_TRAMPOLINE |
710 | /* This seems to actually slow down the fibo test -- dunno why */ | |
a98cef7e | 711 | /* |
659b4611 AW |
712 | * Subr call |
713 | */ | |
714 | switch (nargs) | |
715 | { | |
716 | case 0: | |
717 | { | |
718 | scm_t_trampoline_0 call = scm_trampoline_0 (x); | |
719 | if (call) | |
720 | { | |
721 | SYNC_ALL (); | |
722 | *sp = call (x); | |
723 | goto vm_return; | |
724 | } | |
725 | break; | |
726 | } | |
727 | case 1: | |
728 | { | |
729 | scm_t_trampoline_1 call = scm_trampoline_1 (x); | |
730 | if (call) | |
731 | { | |
732 | SCM arg1; | |
733 | POP (arg1); | |
734 | SYNC_ALL (); | |
735 | *sp = call (x, arg1); | |
736 | goto vm_return; | |
737 | } | |
738 | break; | |
739 | } | |
740 | case 2: | |
741 | { | |
742 | scm_t_trampoline_2 call = scm_trampoline_2 (x); | |
743 | if (call) | |
744 | { | |
745 | SCM arg1, arg2; | |
746 | POP (arg2); | |
747 | POP (arg1); | |
748 | SYNC_ALL (); | |
749 | *sp = call (x, arg1, arg2); | |
750 | goto vm_return; | |
751 | } | |
752 | break; | |
753 | } | |
754 | } | |
d507b25f | 755 | #endif |
659b4611 AW |
756 | |
757 | /* | |
758 | * Other interpreted or compiled call | |
a98cef7e | 759 | */ |
3616e9e9 | 760 | if (!SCM_FALSEP (scm_procedure_p (x))) |
a98cef7e | 761 | { |
17e90c5e | 762 | POP_LIST (nargs); |
1865ad56 | 763 | SYNC_REGISTER (); |
887ce75a | 764 | sp[-1] = scm_apply (x, sp[0], SCM_EOL); |
66db076a | 765 | NULLSTACK_FOR_NONLOCAL_EXIT (); |
887ce75a | 766 | DROP (); |
42906d74 AW |
767 | if (SCM_UNLIKELY (SCM_VALUESP (*sp))) |
768 | { | |
769 | /* multiple values returned to continuation */ | |
770 | SCM values; | |
771 | POP (values); | |
772 | values = scm_struct_ref (values, SCM_INUM0); | |
773 | nvalues = scm_ilength (values); | |
fb10a008 | 774 | PUSH_LIST (values, SCM_NULLP); |
42906d74 AW |
775 | goto vm_return_values; |
776 | } | |
a98cef7e KN |
777 | goto vm_return; |
778 | } | |
fcd4901b AW |
779 | |
780 | program = x; | |
781 | ||
a98cef7e KN |
782 | /* |
783 | * Continuation call | |
784 | */ | |
fcd4901b | 785 | if (SCM_VM_CONT_P (program)) |
f03c31db | 786 | goto vm_call_continuation; |
a98cef7e | 787 | |
17e90c5e KN |
788 | goto vm_error_wrong_type_apply; |
789 | } | |
790 | ||
53e28ed9 | 791 | VM_DEFINE_INSTRUCTION (41, goto_nargs, "goto/nargs", 0, 0, 1) |
efbd5892 AW |
792 | { |
793 | SCM x; | |
794 | POP (x); | |
795 | nargs = scm_to_int (x); | |
d51406fe | 796 | /* FIXME: should truncate values? */ |
efbd5892 AW |
797 | goto vm_goto_args; |
798 | } | |
799 | ||
53e28ed9 | 800 | VM_DEFINE_INSTRUCTION (42, call_nargs, "call/nargs", 0, 0, 1) |
efbd5892 AW |
801 | { |
802 | SCM x; | |
803 | POP (x); | |
804 | nargs = scm_to_int (x); | |
d51406fe | 805 | /* FIXME: should truncate values? */ |
efbd5892 AW |
806 | goto vm_call; |
807 | } | |
808 | ||
53e28ed9 | 809 | VM_DEFINE_INSTRUCTION (43, mv_call, "mv-call", 3, -1, 1) |
a222b0fa AW |
810 | { |
811 | SCM x; | |
efbd5892 | 812 | signed short offset; |
a222b0fa AW |
813 | |
814 | nargs = FETCH (); | |
efbd5892 | 815 | FETCH_OFFSET (offset); |
a222b0fa AW |
816 | |
817 | x = sp[-nargs]; | |
818 | ||
819 | /* | |
820 | * Subprogram call | |
821 | */ | |
822 | if (SCM_PROGRAM_P (x)) | |
823 | { | |
824 | program = x; | |
825 | CACHE_PROGRAM (); | |
826 | INIT_ARGS (); | |
827 | NEW_FRAME (); | |
b1b942b7 | 828 | SCM_FRAME_DATA_ADDRESS (fp)[2] = (SCM)(SCM_FRAME_RETURN_ADDRESS (fp) + offset); |
a222b0fa AW |
829 | ENTER_HOOK (); |
830 | APPLY_HOOK (); | |
831 | NEXT; | |
832 | } | |
833 | /* | |
834 | * Other interpreted or compiled call | |
835 | */ | |
836 | if (!SCM_FALSEP (scm_procedure_p (x))) | |
837 | { | |
838 | /* At this point, the stack contains the procedure and each one of its | |
839 | arguments. */ | |
a222b0fa | 840 | POP_LIST (nargs); |
a222b0fa | 841 | SYNC_REGISTER (); |
887ce75a | 842 | sp[-1] = scm_apply (x, sp[0], SCM_EOL); |
66db076a | 843 | NULLSTACK_FOR_NONLOCAL_EXIT (); |
887ce75a | 844 | DROP (); |
a222b0fa AW |
845 | if (SCM_VALUESP (*sp)) |
846 | { | |
847 | SCM values, len; | |
848 | POP (values); | |
849 | values = scm_struct_ref (values, SCM_INUM0); | |
850 | len = scm_length (values); | |
fb10a008 | 851 | PUSH_LIST (values, SCM_NULLP); |
a222b0fa AW |
852 | PUSH (len); |
853 | ip += offset; | |
854 | } | |
855 | NEXT; | |
856 | } | |
857 | /* | |
858 | * Continuation call | |
859 | */ | |
860 | if (SCM_VM_CONT_P (x)) | |
861 | { | |
862 | program = x; | |
863 | goto vm_call_continuation; | |
864 | } | |
865 | ||
866 | program = x; | |
867 | goto vm_error_wrong_type_apply; | |
868 | } | |
869 | ||
53e28ed9 | 870 | VM_DEFINE_INSTRUCTION (44, apply, "apply", 1, -1, 1) |
3616e9e9 | 871 | { |
c8b9df71 KN |
872 | int len; |
873 | SCM ls; | |
874 | POP (ls); | |
875 | ||
876 | nargs = FETCH (); | |
9a8cc8e7 | 877 | ASSERT (nargs >= 2); |
c8b9df71 KN |
878 | |
879 | len = scm_ilength (ls); | |
880 | if (len < 0) | |
881 | goto vm_error_wrong_type_arg; | |
882 | ||
fb10a008 | 883 | PUSH_LIST (ls, SCM_NULL_OR_NIL_P); |
c8b9df71 KN |
884 | |
885 | nargs += len - 2; | |
886 | goto vm_call; | |
3616e9e9 KN |
887 | } |
888 | ||
53e28ed9 | 889 | VM_DEFINE_INSTRUCTION (45, goto_apply, "goto/apply", 1, -1, 1) |
f03c31db AW |
890 | { |
891 | int len; | |
892 | SCM ls; | |
893 | POP (ls); | |
894 | ||
895 | nargs = FETCH (); | |
9a8cc8e7 | 896 | ASSERT (nargs >= 2); |
f03c31db AW |
897 | |
898 | len = scm_ilength (ls); | |
899 | if (len < 0) | |
900 | goto vm_error_wrong_type_arg; | |
901 | ||
fb10a008 | 902 | PUSH_LIST (ls, SCM_NULL_OR_NIL_P); |
f03c31db AW |
903 | |
904 | nargs += len - 2; | |
905 | goto vm_goto_args; | |
906 | } | |
907 | ||
53e28ed9 | 908 | VM_DEFINE_INSTRUCTION (46, call_cc, "call/cc", 0, 1, 1) |
17e90c5e | 909 | { |
76282387 AW |
910 | int first; |
911 | SCM proc, cont; | |
912 | POP (proc); | |
913 | SYNC_ALL (); | |
914 | cont = scm_make_continuation (&first); | |
915 | if (first) | |
916 | { | |
917 | PUSH (proc); | |
918 | PUSH (cont); | |
919 | nargs = 1; | |
920 | goto vm_call; | |
921 | } | |
11ea1aba AW |
922 | ASSERT (sp == vp->sp); |
923 | ASSERT (fp == vp->fp); | |
76282387 AW |
924 | else if (SCM_VALUESP (cont)) |
925 | { | |
926 | /* multiple values returned to continuation */ | |
927 | SCM values; | |
928 | values = scm_struct_ref (cont, SCM_INUM0); | |
929 | if (SCM_NULLP (values)) | |
9a8cc8e7 | 930 | goto vm_error_no_values; |
76282387 AW |
931 | /* non-tail context does not accept multiple values? */ |
932 | PUSH (SCM_CAR (values)); | |
933 | NEXT; | |
934 | } | |
935 | else | |
936 | { | |
937 | PUSH (cont); | |
938 | NEXT; | |
939 | } | |
a98cef7e KN |
940 | } |
941 | ||
53e28ed9 | 942 | VM_DEFINE_INSTRUCTION (47, goto_cc, "goto/cc", 0, 1, 1) |
f03c31db | 943 | { |
76282387 AW |
944 | int first; |
945 | SCM proc, cont; | |
946 | POP (proc); | |
947 | SYNC_ALL (); | |
948 | cont = scm_make_continuation (&first); | |
66db076a AW |
949 | ASSERT (sp == vp->sp); |
950 | ASSERT (fp == vp->fp); | |
76282387 AW |
951 | if (first) |
952 | { | |
953 | PUSH (proc); | |
954 | PUSH (cont); | |
955 | nargs = 1; | |
956 | goto vm_goto_args; | |
957 | } | |
958 | else if (SCM_VALUESP (cont)) | |
959 | { | |
960 | /* multiple values returned to continuation */ | |
961 | SCM values; | |
962 | values = scm_struct_ref (cont, SCM_INUM0); | |
963 | nvalues = scm_ilength (values); | |
fb10a008 | 964 | PUSH_LIST (values, SCM_NULLP); |
76282387 AW |
965 | goto vm_return_values; |
966 | } | |
967 | else | |
968 | { | |
969 | PUSH (cont); | |
970 | goto vm_return; | |
971 | } | |
f03c31db AW |
972 | } |
973 | ||
131f7d6c | 974 | VM_DEFINE_INSTRUCTION (48, return, "return", 0, 1, 1) |
a98cef7e | 975 | { |
a98cef7e | 976 | vm_return: |
17e90c5e KN |
977 | EXIT_HOOK (); |
978 | RETURN_HOOK (); | |
ef7e1868 AW |
979 | SYNC_REGISTER (); |
980 | SCM_TICK; /* allow interrupt here */ | |
f13c269b AW |
981 | { |
982 | SCM ret, *data; | |
983 | data = SCM_FRAME_DATA_ADDRESS (fp); | |
984 | ||
985 | POP (ret); | |
11ea1aba | 986 | ASSERT (sp == stack_base); |
b1b942b7 | 987 | ASSERT (stack_base == data + 3); |
f13c269b AW |
988 | |
989 | /* Restore registers */ | |
990 | sp = SCM_FRAME_LOWER_ADDRESS (fp); | |
b1b942b7 AW |
991 | ip = SCM_FRAME_BYTE_CAST (data[3]); |
992 | fp = SCM_FRAME_STACK_CAST (data[1]); | |
11ea1aba AW |
993 | { |
994 | #ifdef VM_ENABLE_STACK_NULLING | |
995 | int nullcount = stack_base - sp; | |
996 | #endif | |
997 | stack_base = SCM_FRAME_UPPER_ADDRESS (fp) - 1; | |
998 | NULLSTACK (nullcount); | |
999 | } | |
f13c269b AW |
1000 | |
1001 | /* Set return value (sp is already pushed) */ | |
1002 | *sp = ret; | |
1003 | } | |
17e90c5e | 1004 | |
15df3447 | 1005 | /* Restore the last program */ |
af988bbf | 1006 | program = SCM_FRAME_PROGRAM (fp); |
499a4c07 | 1007 | CACHE_PROGRAM (); |
af988bbf | 1008 | CACHE_EXTERNAL (); |
7e4760e4 | 1009 | CHECK_IP (); |
a98cef7e KN |
1010 | NEXT; |
1011 | } | |
17e90c5e | 1012 | |
53e28ed9 | 1013 | VM_DEFINE_INSTRUCTION (49, return_values, "return/values", 1, -1, -1) |
a222b0fa | 1014 | { |
ef24c01b AW |
1015 | /* nvalues declared at top level, because for some reason gcc seems to think |
1016 | that perhaps it might be used without declaration. Fooey to that, I say. */ | |
1017 | SCM *data; | |
1018 | ||
1019 | nvalues = FETCH (); | |
1020 | vm_return_values: | |
a222b0fa AW |
1021 | EXIT_HOOK (); |
1022 | RETURN_HOOK (); | |
ef24c01b AW |
1023 | |
1024 | data = SCM_FRAME_DATA_ADDRESS (fp); | |
b1b942b7 | 1025 | ASSERT (stack_base == data + 3); |
a222b0fa | 1026 | |
b1b942b7 AW |
1027 | /* data[2] is the mv return address */ |
1028 | if (nvalues != 1 && data[2]) | |
ef24c01b AW |
1029 | { |
1030 | int i; | |
1031 | /* Restore registers */ | |
1032 | sp = SCM_FRAME_LOWER_ADDRESS (fp) - 1; | |
b1b942b7 AW |
1033 | ip = SCM_FRAME_BYTE_CAST (data[2]); /* multiple value ra */ |
1034 | fp = SCM_FRAME_STACK_CAST (data[1]); | |
a222b0fa | 1035 | |
ef24c01b AW |
1036 | /* Push return values, and the number of values */ |
1037 | for (i = 0; i < nvalues; i++) | |
1038 | *++sp = stack_base[1+i]; | |
1039 | *++sp = SCM_I_MAKINUM (nvalues); | |
a222b0fa | 1040 | |
ef24c01b | 1041 | /* Finally set new stack_base */ |
11ea1aba | 1042 | NULLSTACK (stack_base - sp + nvalues + 1); |
ef24c01b AW |
1043 | stack_base = SCM_FRAME_UPPER_ADDRESS (fp) - 1; |
1044 | } | |
1045 | else if (nvalues >= 1) | |
1046 | { | |
1047 | /* Multiple values for a single-valued continuation -- here's where I | |
1048 | break with guile tradition and try and do something sensible. (Also, | |
1049 | this block handles the single-valued return to an mv | |
1050 | continuation.) */ | |
1051 | /* Restore registers */ | |
1052 | sp = SCM_FRAME_LOWER_ADDRESS (fp) - 1; | |
b1b942b7 AW |
1053 | ip = SCM_FRAME_BYTE_CAST (data[3]); /* single value ra */ |
1054 | fp = SCM_FRAME_STACK_CAST (data[1]); | |
a222b0fa | 1055 | |
ef24c01b AW |
1056 | /* Push first value */ |
1057 | *++sp = stack_base[1]; | |
a222b0fa | 1058 | |
ef24c01b | 1059 | /* Finally set new stack_base */ |
9b10d0bc | 1060 | NULLSTACK (stack_base - sp + nvalues + 1); |
ef24c01b AW |
1061 | stack_base = SCM_FRAME_UPPER_ADDRESS (fp) - 1; |
1062 | } | |
1063 | else | |
1064 | goto vm_error_no_values; | |
a222b0fa AW |
1065 | |
1066 | /* Restore the last program */ | |
1067 | program = SCM_FRAME_PROGRAM (fp); | |
1068 | CACHE_PROGRAM (); | |
1069 | CACHE_EXTERNAL (); | |
1070 | CHECK_IP (); | |
1071 | NEXT; | |
1072 | } | |
1073 | ||
53e28ed9 | 1074 | VM_DEFINE_INSTRUCTION (50, return_values_star, "return/values*", 1, -1, -1) |
ef24c01b AW |
1075 | { |
1076 | SCM l; | |
1077 | ||
1078 | nvalues = FETCH (); | |
11ea1aba | 1079 | ASSERT (nvalues >= 1); |
ef24c01b AW |
1080 | |
1081 | nvalues--; | |
1082 | POP (l); | |
1083 | while (SCM_CONSP (l)) | |
1084 | { | |
1085 | PUSH (SCM_CAR (l)); | |
1086 | l = SCM_CDR (l); | |
1087 | nvalues++; | |
1088 | } | |
fb10a008 | 1089 | if (SCM_UNLIKELY (!SCM_NULL_OR_NIL_P (l))) { |
e06e857c | 1090 | finish_args = scm_list_1 (l); |
fb10a008 AW |
1091 | goto vm_error_improper_list; |
1092 | } | |
ef24c01b AW |
1093 | |
1094 | goto vm_return_values; | |
1095 | } | |
1096 | ||
53e28ed9 | 1097 | VM_DEFINE_INSTRUCTION (51, truncate_values, "truncate-values", 2, -1, -1) |
d51406fe AW |
1098 | { |
1099 | SCM x; | |
1100 | int nbinds, rest; | |
1101 | POP (x); | |
1102 | nvalues = scm_to_int (x); | |
1103 | nbinds = FETCH (); | |
1104 | rest = FETCH (); | |
1105 | ||
1106 | if (rest) | |
1107 | nbinds--; | |
1108 | ||
1109 | if (nvalues < nbinds) | |
1110 | goto vm_error_not_enough_values; | |
1111 | ||
1112 | if (rest) | |
1113 | POP_LIST (nvalues - nbinds); | |
1114 | else | |
1115 | DROPN (nvalues - nbinds); | |
1116 | ||
1117 | NEXT; | |
1118 | } | |
1119 | ||
53e28ed9 AW |
1120 | /* |
1121 | (defun renumber-ops () | |
1122 | "start from top of buffer and renumber 'VM_DEFINE_FOO (\n' sequences" | |
1123 | (interactive "") | |
1124 | (save-excursion | |
1125 | (let ((counter -1)) (goto-char (point-min)) | |
1126 | (while (re-search-forward "^VM_DEFINE_[^ ]+ (\\([^,]+\\)," (point-max) t) | |
1127 | (replace-match | |
1128 | (number-to-string (setq counter (1+ counter))) | |
1129 | t t nil 1))))) | |
1130 | */ | |
17e90c5e KN |
1131 | /* |
1132 | Local Variables: | |
1133 | c-file-style: "gnu" | |
1134 | End: | |
1135 | */ |