Commit | Line | Data |
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581f410f | 1 | /* Copyright (C) 2001,2008,2009,2010,2011,2012,2013 Free Software Foundation, Inc. |
5e80f2ce | 2 | * |
53e28ed9 | 3 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
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. | |
a98cef7e | 7 | * |
53befeb7 NJ |
8 | * This library is distributed in the hope that it will be useful, but |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
53e28ed9 AW |
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 | |
53befeb7 NJ |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
16 | * 02110-1301 USA | |
53e28ed9 AW |
17 | */ |
18 | ||
a98cef7e KN |
19 | |
20 | /* This file is included in vm_engine.c */ | |
21 | ||
a98cef7e KN |
22 | \f |
23 | /* | |
24 | * Basic operations | |
25 | */ | |
26 | ||
53e28ed9 | 27 | VM_DEFINE_INSTRUCTION (0, nop, "nop", 0, 0, 0) |
a98cef7e KN |
28 | { |
29 | NEXT; | |
30 | } | |
31 | ||
53e28ed9 | 32 | VM_DEFINE_INSTRUCTION (1, halt, "halt", 0, 0, 0) |
a98cef7e | 33 | { |
53bdfcf0 AW |
34 | SCM ret; |
35 | ||
a222b0fa | 36 | nvalues = SCM_I_INUM (*sp--); |
11ea1aba | 37 | NULLSTACK (1); |
53bdfcf0 | 38 | |
a222b0fa | 39 | if (nvalues == 1) |
53bdfcf0 | 40 | POP (ret); |
a222b0fa AW |
41 | else |
42 | { | |
877ffa3f | 43 | SYNC_REGISTER (); |
53bdfcf0 AW |
44 | sp -= nvalues; |
45 | CHECK_UNDERFLOW (); | |
46 | ret = scm_c_values (sp + 1, nvalues); | |
47 | NULLSTACK (nvalues); | |
a222b0fa AW |
48 | } |
49 | ||
1dc8f851 | 50 | { |
6c6a4439 AW |
51 | #ifdef VM_ENABLE_STACK_NULLING |
52 | SCM *old_sp = sp; | |
53 | #endif | |
1dc8f851 AW |
54 | |
55 | /* Restore registers */ | |
56 | sp = SCM_FRAME_LOWER_ADDRESS (fp) - 1; | |
6c6a4439 AW |
57 | /* Setting the ip here doesn't actually affect control flow, as the calling |
58 | code will restore its own registers, but it does help when walking the | |
59 | stack */ | |
60 | ip = SCM_FRAME_RETURN_ADDRESS (fp); | |
1dc8f851 | 61 | fp = SCM_FRAME_DYNAMIC_LINK (fp); |
6c6a4439 | 62 | NULLSTACK (old_sp - sp); |
1dc8f851 | 63 | } |
e06e857c | 64 | |
53bdfcf0 AW |
65 | SYNC_ALL (); |
66 | return ret; | |
a98cef7e KN |
67 | } |
68 | ||
cf45ff03 | 69 | VM_DEFINE_INSTRUCTION (2, drop, "drop", 0, 1, 0) |
a98cef7e | 70 | { |
17e90c5e | 71 | DROP (); |
a98cef7e KN |
72 | NEXT; |
73 | } | |
74 | ||
cf45ff03 | 75 | VM_DEFINE_INSTRUCTION (3, dup, "dup", 0, 0, 1) |
26403690 | 76 | { |
f349065e KN |
77 | SCM x = *sp; |
78 | PUSH (x); | |
26403690 KN |
79 | NEXT; |
80 | } | |
81 | ||
17e90c5e KN |
82 | \f |
83 | /* | |
84 | * Object creation | |
85 | */ | |
a98cef7e | 86 | |
cf45ff03 | 87 | VM_DEFINE_INSTRUCTION (4, void, "void", 0, 0, 1) |
a98cef7e | 88 | { |
17e90c5e | 89 | PUSH (SCM_UNSPECIFIED); |
a98cef7e KN |
90 | NEXT; |
91 | } | |
92 | ||
cf45ff03 | 93 | VM_DEFINE_INSTRUCTION (5, make_true, "make-true", 0, 0, 1) |
a98cef7e | 94 | { |
17e90c5e | 95 | PUSH (SCM_BOOL_T); |
a98cef7e KN |
96 | NEXT; |
97 | } | |
98 | ||
cf45ff03 | 99 | VM_DEFINE_INSTRUCTION (6, make_false, "make-false", 0, 0, 1) |
a98cef7e | 100 | { |
17e90c5e | 101 | PUSH (SCM_BOOL_F); |
a98cef7e KN |
102 | NEXT; |
103 | } | |
104 | ||
cf45ff03 | 105 | VM_DEFINE_INSTRUCTION (7, make_nil, "make-nil", 0, 0, 1) |
4530432e DK |
106 | { |
107 | PUSH (SCM_ELISP_NIL); | |
108 | NEXT; | |
109 | } | |
110 | ||
cf45ff03 | 111 | VM_DEFINE_INSTRUCTION (8, make_eol, "make-eol", 0, 0, 1) |
a98cef7e | 112 | { |
17e90c5e | 113 | PUSH (SCM_EOL); |
a98cef7e KN |
114 | NEXT; |
115 | } | |
116 | ||
cf45ff03 | 117 | VM_DEFINE_INSTRUCTION (9, make_int8, "make-int8", 1, 0, 1) |
a98cef7e | 118 | { |
2d80426a | 119 | PUSH (SCM_I_MAKINUM ((signed char) FETCH ())); |
a98cef7e KN |
120 | NEXT; |
121 | } | |
122 | ||
cf45ff03 | 123 | VM_DEFINE_INSTRUCTION (10, make_int8_0, "make-int8:0", 0, 0, 1) |
a98cef7e | 124 | { |
238e7a11 | 125 | PUSH (SCM_INUM0); |
a98cef7e KN |
126 | NEXT; |
127 | } | |
128 | ||
cf45ff03 | 129 | VM_DEFINE_INSTRUCTION (11, make_int8_1, "make-int8:1", 0, 0, 1) |
a98cef7e | 130 | { |
238e7a11 | 131 | PUSH (SCM_I_MAKINUM (1)); |
a98cef7e KN |
132 | NEXT; |
133 | } | |
134 | ||
cf45ff03 | 135 | VM_DEFINE_INSTRUCTION (12, make_int16, "make-int16", 2, 0, 1) |
a98cef7e | 136 | { |
ea9b4b29 KN |
137 | int h = FETCH (); |
138 | int l = FETCH (); | |
2d80426a | 139 | PUSH (SCM_I_MAKINUM ((signed short) (h << 8) + l)); |
a98cef7e KN |
140 | NEXT; |
141 | } | |
142 | ||
cf45ff03 | 143 | VM_DEFINE_INSTRUCTION (13, make_int64, "make-int64", 8, 0, 1) |
586cfdec AW |
144 | { |
145 | scm_t_uint64 v = 0; | |
146 | v += FETCH (); | |
147 | v <<= 8; v += FETCH (); | |
148 | v <<= 8; v += FETCH (); | |
149 | v <<= 8; v += FETCH (); | |
150 | v <<= 8; v += FETCH (); | |
151 | v <<= 8; v += FETCH (); | |
152 | v <<= 8; v += FETCH (); | |
153 | v <<= 8; v += FETCH (); | |
154 | PUSH (scm_from_int64 ((scm_t_int64) v)); | |
155 | NEXT; | |
156 | } | |
157 | ||
cf45ff03 | 158 | VM_DEFINE_INSTRUCTION (14, make_uint64, "make-uint64", 8, 0, 1) |
586cfdec AW |
159 | { |
160 | scm_t_uint64 v = 0; | |
161 | v += FETCH (); | |
162 | v <<= 8; v += FETCH (); | |
163 | v <<= 8; v += FETCH (); | |
164 | v <<= 8; v += FETCH (); | |
165 | v <<= 8; v += FETCH (); | |
166 | v <<= 8; v += FETCH (); | |
167 | v <<= 8; v += FETCH (); | |
168 | v <<= 8; v += FETCH (); | |
169 | PUSH (scm_from_uint64 (v)); | |
170 | NEXT; | |
171 | } | |
172 | ||
cf45ff03 | 173 | VM_DEFINE_INSTRUCTION (15, make_char8, "make-char8", 1, 0, 1) |
a98cef7e | 174 | { |
4c402b88 MG |
175 | scm_t_uint8 v = 0; |
176 | v = FETCH (); | |
177 | ||
178 | PUSH (SCM_MAKE_CHAR (v)); | |
179 | /* Don't simplify this to PUSH (SCM_MAKE_CHAR (FETCH ())). The | |
180 | contents of SCM_MAKE_CHAR may be evaluated more than once, | |
181 | resulting in a double fetch. */ | |
a98cef7e KN |
182 | NEXT; |
183 | } | |
184 | ||
cf45ff03 | 185 | VM_DEFINE_INSTRUCTION (16, make_char32, "make-char32", 4, 0, 1) |
904a78f1 MG |
186 | { |
187 | scm_t_wchar v = 0; | |
188 | v += FETCH (); | |
189 | v <<= 8; v += FETCH (); | |
190 | v <<= 8; v += FETCH (); | |
191 | v <<= 8; v += FETCH (); | |
192 | PUSH (SCM_MAKE_CHAR (v)); | |
193 | NEXT; | |
194 | } | |
195 | ||
196 | ||
197 | ||
cf45ff03 | 198 | VM_DEFINE_INSTRUCTION (17, list, "list", 2, -1, 1) |
cb4cca12 | 199 | { |
23b587b0 LC |
200 | unsigned h = FETCH (); |
201 | unsigned l = FETCH (); | |
202 | unsigned len = ((h << 8) + l); | |
203 | POP_LIST (len); | |
cb4cca12 KN |
204 | NEXT; |
205 | } | |
206 | ||
cf45ff03 | 207 | VM_DEFINE_INSTRUCTION (18, vector, "vector", 2, -1, 1) |
cb4cca12 | 208 | { |
23b587b0 LC |
209 | unsigned h = FETCH (); |
210 | unsigned l = FETCH (); | |
211 | unsigned len = ((h << 8) + l); | |
5338b62b AW |
212 | SCM vect; |
213 | ||
877ffa3f | 214 | SYNC_REGISTER (); |
5338b62b AW |
215 | sp++; sp -= len; |
216 | CHECK_UNDERFLOW (); | |
217 | vect = scm_make_vector (scm_from_uint (len), SCM_BOOL_F); | |
218 | memcpy (SCM_I_VECTOR_WELTS(vect), sp, sizeof(SCM) * len); | |
219 | NULLSTACK (len); | |
220 | *sp = vect; | |
221 | ||
cb4cca12 KN |
222 | NEXT; |
223 | } | |
224 | ||
a98cef7e KN |
225 | \f |
226 | /* | |
17e90c5e | 227 | * Variable access |
a98cef7e KN |
228 | */ |
229 | ||
17e90c5e KN |
230 | #define OBJECT_REF(i) objects[i] |
231 | #define OBJECT_SET(i,o) objects[i] = o | |
a98cef7e | 232 | |
af988bbf KN |
233 | #define LOCAL_REF(i) SCM_FRAME_VARIABLE (fp, i) |
234 | #define LOCAL_SET(i,o) SCM_FRAME_VARIABLE (fp, i) = o | |
a98cef7e | 235 | |
2d80426a LC |
236 | /* For the variable operations, we _must_ obviously avoid function calls to |
237 | `scm_variable_ref ()', `scm_variable_bound_p ()' and friends which do | |
238 | nothing more than the corresponding macros. */ | |
239 | #define VARIABLE_REF(v) SCM_VARIABLE_REF (v) | |
240 | #define VARIABLE_SET(v,o) SCM_VARIABLE_SET (v, o) | |
d223c3fc | 241 | #define VARIABLE_BOUNDP(v) (!scm_is_eq (VARIABLE_REF (v), SCM_UNDEFINED)) |
a98cef7e | 242 | |
6f16379e | 243 | #define FREE_VARIABLE_REF(i) SCM_PROGRAM_FREE_VARIABLE_REF (program, i) |
8d90b356 | 244 | |
17e90c5e | 245 | /* ref */ |
a98cef7e | 246 | |
cf45ff03 | 247 | VM_DEFINE_INSTRUCTION (19, object_ref, "object-ref", 1, 0, 1) |
a98cef7e | 248 | { |
a52b2d3d | 249 | register unsigned objnum = FETCH (); |
0b5f0e49 LC |
250 | CHECK_OBJECT (objnum); |
251 | PUSH (OBJECT_REF (objnum)); | |
17e90c5e | 252 | NEXT; |
a98cef7e KN |
253 | } |
254 | ||
a5cfddd5 | 255 | /* FIXME: necessary? elt 255 of the vector could be a vector... */ |
cf45ff03 | 256 | VM_DEFINE_INSTRUCTION (20, long_object_ref, "long-object-ref", 2, 0, 1) |
a5cfddd5 AW |
257 | { |
258 | unsigned int objnum = FETCH (); | |
259 | objnum <<= 8; | |
260 | objnum += FETCH (); | |
261 | CHECK_OBJECT (objnum); | |
262 | PUSH (OBJECT_REF (objnum)); | |
263 | NEXT; | |
264 | } | |
265 | ||
cf45ff03 | 266 | VM_DEFINE_INSTRUCTION (21, local_ref, "local-ref", 1, 0, 1) |
a98cef7e | 267 | { |
17e90c5e | 268 | PUSH (LOCAL_REF (FETCH ())); |
a1a482e0 | 269 | ASSERT_BOUND (*sp); |
17e90c5e | 270 | NEXT; |
a98cef7e KN |
271 | } |
272 | ||
cf45ff03 | 273 | VM_DEFINE_INSTRUCTION (22, long_local_ref, "long-local-ref", 2, 0, 1) |
a98cef7e | 274 | { |
80545853 AW |
275 | unsigned int i = FETCH (); |
276 | i <<= 8; | |
277 | i += FETCH (); | |
28b119ee | 278 | PUSH (LOCAL_REF (i)); |
a1a482e0 | 279 | ASSERT_BOUND (*sp); |
a98cef7e KN |
280 | NEXT; |
281 | } | |
282 | ||
cf45ff03 | 283 | VM_DEFINE_INSTRUCTION (23, local_bound, "local-bound?", 1, 0, 1) |
3092a14d | 284 | { |
d223c3fc | 285 | PUSH (scm_from_bool (!scm_is_eq (LOCAL_REF (FETCH ()), SCM_UNDEFINED))); |
3092a14d AW |
286 | NEXT; |
287 | } | |
288 | ||
cf45ff03 | 289 | VM_DEFINE_INSTRUCTION (24, long_local_bound, "long-local-bound?", 2, 0, 1) |
3092a14d AW |
290 | { |
291 | unsigned int i = FETCH (); | |
292 | i <<= 8; | |
293 | i += FETCH (); | |
d223c3fc | 294 | PUSH (scm_from_bool (!scm_is_eq (LOCAL_REF (i), SCM_UNDEFINED))); |
3092a14d AW |
295 | NEXT; |
296 | } | |
297 | ||
cf45ff03 | 298 | VM_DEFINE_INSTRUCTION (25, variable_ref, "variable-ref", 0, 1, 1) |
a98cef7e | 299 | { |
17e90c5e | 300 | SCM x = *sp; |
238e7a11 | 301 | |
dce0252b AW |
302 | /* We don't use ASSERT_VARIABLE or ASSERT_BOUND_VARIABLE here because, |
303 | unlike in top-variable-ref, it really isn't an internal assertion | |
304 | that can be optimized out -- the variable could be coming directly | |
305 | from the user. */ | |
53bdfcf0 AW |
306 | VM_ASSERT (SCM_VARIABLEP (x), |
307 | vm_error_not_a_variable ("variable-ref", x)); | |
308 | ||
309 | if (SCM_UNLIKELY (!VARIABLE_BOUNDP (x))) | |
17e90c5e | 310 | { |
1af77230 LC |
311 | SCM var_name; |
312 | ||
4cec6c22 | 313 | SYNC_ALL (); |
1af77230 LC |
314 | /* Attempt to provide the variable name in the error message. */ |
315 | var_name = scm_module_reverse_lookup (scm_current_module (), x); | |
53bdfcf0 | 316 | vm_error_unbound (program, scm_is_true (var_name) ? var_name : x); |
17e90c5e | 317 | } |
238e7a11 LC |
318 | else |
319 | { | |
2d80426a | 320 | SCM o = VARIABLE_REF (x); |
238e7a11 LC |
321 | *sp = o; |
322 | } | |
323 | ||
a98cef7e KN |
324 | NEXT; |
325 | } | |
326 | ||
cf45ff03 | 327 | VM_DEFINE_INSTRUCTION (26, variable_bound, "variable-bound?", 0, 1, 1) |
3092a14d | 328 | { |
dce0252b AW |
329 | SCM x = *sp; |
330 | ||
53bdfcf0 AW |
331 | VM_ASSERT (SCM_VARIABLEP (x), |
332 | vm_error_not_a_variable ("variable-bound?", x)); | |
333 | ||
334 | *sp = scm_from_bool (VARIABLE_BOUNDP (x)); | |
3092a14d AW |
335 | NEXT; |
336 | } | |
337 | ||
cf45ff03 | 338 | VM_DEFINE_INSTRUCTION (27, toplevel_ref, "toplevel-ref", 1, 0, 1) |
9cc649b8 | 339 | { |
6297d229 | 340 | unsigned objnum = FETCH (); |
a39b116f | 341 | SCM what, resolved; |
9cc649b8 | 342 | CHECK_OBJECT (objnum); |
fd358575 | 343 | what = OBJECT_REF (objnum); |
9cc649b8 | 344 | |
45dc6b34 | 345 | if (!SCM_VARIABLEP (what)) |
9cc649b8 | 346 | { |
d0168f3d | 347 | SYNC_REGISTER (); |
45dc6b34 | 348 | resolved = resolve_variable (what, scm_program_module (program)); |
53bdfcf0 | 349 | VM_ASSERT (VARIABLE_BOUNDP (resolved), vm_error_unbound (program, what)); |
45dc6b34 | 350 | what = resolved; |
fd358575 | 351 | OBJECT_SET (objnum, what); |
9cc649b8 AW |
352 | } |
353 | ||
fd358575 | 354 | PUSH (VARIABLE_REF (what)); |
9cc649b8 AW |
355 | NEXT; |
356 | } | |
357 | ||
cf45ff03 | 358 | VM_DEFINE_INSTRUCTION (28, long_toplevel_ref, "long-toplevel-ref", 2, 0, 1) |
a5cfddd5 | 359 | { |
a39b116f | 360 | SCM what, resolved; |
a5cfddd5 AW |
361 | unsigned int objnum = FETCH (); |
362 | objnum <<= 8; | |
363 | objnum += FETCH (); | |
364 | CHECK_OBJECT (objnum); | |
365 | what = OBJECT_REF (objnum); | |
366 | ||
45dc6b34 | 367 | if (!SCM_VARIABLEP (what)) |
a5cfddd5 AW |
368 | { |
369 | SYNC_REGISTER (); | |
45dc6b34 | 370 | resolved = resolve_variable (what, scm_program_module (program)); |
53bdfcf0 AW |
371 | VM_ASSERT (VARIABLE_BOUNDP (resolved), |
372 | vm_error_unbound (program, what)); | |
45dc6b34 | 373 | what = resolved; |
a5cfddd5 AW |
374 | OBJECT_SET (objnum, what); |
375 | } | |
376 | ||
377 | PUSH (VARIABLE_REF (what)); | |
378 | NEXT; | |
379 | } | |
380 | ||
17e90c5e KN |
381 | /* set */ |
382 | ||
cf45ff03 | 383 | VM_DEFINE_INSTRUCTION (29, local_set, "local-set", 1, 1, 0) |
a98cef7e | 384 | { |
eae2438d AW |
385 | SCM x; |
386 | POP (x); | |
387 | LOCAL_SET (FETCH (), x); | |
a98cef7e KN |
388 | NEXT; |
389 | } | |
390 | ||
cf45ff03 | 391 | VM_DEFINE_INSTRUCTION (30, long_local_set, "long-local-set", 2, 1, 0) |
a98cef7e | 392 | { |
eae2438d | 393 | SCM x; |
80545853 AW |
394 | unsigned int i = FETCH (); |
395 | i <<= 8; | |
396 | i += FETCH (); | |
eae2438d AW |
397 | POP (x); |
398 | LOCAL_SET (i, x); | |
a98cef7e KN |
399 | NEXT; |
400 | } | |
401 | ||
cf45ff03 | 402 | VM_DEFINE_INSTRUCTION (31, variable_set, "variable-set", 0, 2, 0) |
a98cef7e | 403 | { |
53bdfcf0 AW |
404 | VM_ASSERT (SCM_VARIABLEP (sp[0]), |
405 | vm_error_not_a_variable ("variable-set!", sp[0])); | |
2d80426a | 406 | VARIABLE_SET (sp[0], sp[-1]); |
11ea1aba | 407 | DROPN (2); |
a98cef7e KN |
408 | NEXT; |
409 | } | |
410 | ||
cf45ff03 | 411 | VM_DEFINE_INSTRUCTION (32, toplevel_set, "toplevel-set", 1, 1, 0) |
9cc649b8 | 412 | { |
6297d229 | 413 | unsigned objnum = FETCH (); |
fd358575 | 414 | SCM what; |
9cc649b8 | 415 | CHECK_OBJECT (objnum); |
fd358575 | 416 | what = OBJECT_REF (objnum); |
9cc649b8 | 417 | |
fd358575 | 418 | if (!SCM_VARIABLEP (what)) |
9cc649b8 | 419 | { |
6287726a | 420 | SYNC_BEFORE_GC (); |
b7393ea1 | 421 | what = resolve_variable (what, scm_program_module (program)); |
fd358575 | 422 | OBJECT_SET (objnum, what); |
9cc649b8 AW |
423 | } |
424 | ||
fd358575 | 425 | VARIABLE_SET (what, *sp); |
9cc649b8 AW |
426 | DROP (); |
427 | NEXT; | |
428 | } | |
429 | ||
cf45ff03 | 430 | VM_DEFINE_INSTRUCTION (33, long_toplevel_set, "long-toplevel-set", 2, 1, 0) |
a5cfddd5 AW |
431 | { |
432 | SCM what; | |
433 | unsigned int objnum = FETCH (); | |
434 | objnum <<= 8; | |
435 | objnum += FETCH (); | |
436 | CHECK_OBJECT (objnum); | |
437 | what = OBJECT_REF (objnum); | |
438 | ||
439 | if (!SCM_VARIABLEP (what)) | |
440 | { | |
441 | SYNC_BEFORE_GC (); | |
442 | what = resolve_variable (what, scm_program_module (program)); | |
443 | OBJECT_SET (objnum, what); | |
444 | } | |
445 | ||
446 | VARIABLE_SET (what, *sp); | |
447 | DROP (); | |
448 | NEXT; | |
449 | } | |
450 | ||
a98cef7e KN |
451 | \f |
452 | /* | |
453 | * branch and jump | |
454 | */ | |
455 | ||
97fcf583 | 456 | /* offset must be at least 24 bits wide, and signed */ |
efbd5892 | 457 | #define FETCH_OFFSET(offset) \ |
17e90c5e | 458 | { \ |
97fcf583 AW |
459 | offset = FETCH () << 16; \ |
460 | offset += FETCH () << 8; \ | |
461 | offset += FETCH (); \ | |
462 | offset -= (offset & (1<<23)) << 1; \ | |
efbd5892 AW |
463 | } |
464 | ||
eae2438d | 465 | #define BR(p) \ |
efbd5892 | 466 | { \ |
97fcf583 | 467 | scm_t_int32 offset; \ |
efbd5892 | 468 | FETCH_OFFSET (offset); \ |
17e90c5e | 469 | if (p) \ |
97fcf583 | 470 | ip += offset; \ |
5b09b37f AW |
471 | if (offset < 0) \ |
472 | VM_HANDLE_INTERRUPTS; \ | |
a39b116f | 473 | NEXT; \ |
17e90c5e KN |
474 | } |
475 | ||
cf45ff03 | 476 | VM_DEFINE_INSTRUCTION (34, br, "br", 3, 0, 0) |
41f248a8 | 477 | { |
97fcf583 | 478 | scm_t_int32 offset; |
e5dc27b8 | 479 | FETCH_OFFSET (offset); |
97fcf583 | 480 | ip += offset; |
5b09b37f AW |
481 | if (offset < 0) |
482 | VM_HANDLE_INTERRUPTS; | |
41f248a8 KN |
483 | NEXT; |
484 | } | |
485 | ||
cf45ff03 | 486 | VM_DEFINE_INSTRUCTION (35, br_if, "br-if", 3, 0, 0) |
a98cef7e | 487 | { |
eae2438d AW |
488 | SCM x; |
489 | POP (x); | |
490 | BR (scm_is_true (x)); | |
a98cef7e KN |
491 | } |
492 | ||
cf45ff03 | 493 | VM_DEFINE_INSTRUCTION (36, br_if_not, "br-if-not", 3, 0, 0) |
a98cef7e | 494 | { |
eae2438d AW |
495 | SCM x; |
496 | POP (x); | |
497 | BR (scm_is_false (x)); | |
a98cef7e KN |
498 | } |
499 | ||
cf45ff03 | 500 | VM_DEFINE_INSTRUCTION (37, br_if_eq, "br-if-eq", 3, 0, 0) |
a98cef7e | 501 | { |
eae2438d AW |
502 | SCM x, y; |
503 | POP2 (y, x); | |
504 | BR (scm_is_eq (x, y)); | |
a98cef7e KN |
505 | } |
506 | ||
cf45ff03 | 507 | VM_DEFINE_INSTRUCTION (38, br_if_not_eq, "br-if-not-eq", 3, 0, 0) |
a98cef7e | 508 | { |
eae2438d AW |
509 | SCM x, y; |
510 | POP2 (y, x); | |
511 | BR (!scm_is_eq (x, y)); | |
17e90c5e KN |
512 | } |
513 | ||
cf45ff03 | 514 | VM_DEFINE_INSTRUCTION (39, br_if_null, "br-if-null", 3, 0, 0) |
17e90c5e | 515 | { |
eae2438d AW |
516 | SCM x; |
517 | POP (x); | |
518 | BR (scm_is_null (x)); | |
17e90c5e KN |
519 | } |
520 | ||
cf45ff03 | 521 | VM_DEFINE_INSTRUCTION (40, br_if_not_null, "br-if-not-null", 3, 0, 0) |
17e90c5e | 522 | { |
eae2438d AW |
523 | SCM x; |
524 | POP (x); | |
525 | BR (!scm_is_null (x)); | |
a98cef7e KN |
526 | } |
527 | ||
a98cef7e KN |
528 | \f |
529 | /* | |
530 | * Subprogram call | |
531 | */ | |
532 | ||
cf45ff03 | 533 | VM_DEFINE_INSTRUCTION (41, br_if_nargs_ne, "br-if-nargs-ne", 5, 0, 0) |
7e01997e AW |
534 | { |
535 | scm_t_ptrdiff n; | |
7f991c7d | 536 | scm_t_int32 offset; |
7e01997e AW |
537 | n = FETCH () << 8; |
538 | n += FETCH (); | |
7e01997e AW |
539 | FETCH_OFFSET (offset); |
540 | if (sp - (fp - 1) != n) | |
541 | ip += offset; | |
542 | NEXT; | |
543 | } | |
544 | ||
cf45ff03 | 545 | VM_DEFINE_INSTRUCTION (42, br_if_nargs_lt, "br-if-nargs-lt", 5, 0, 0) |
7e01997e AW |
546 | { |
547 | scm_t_ptrdiff n; | |
7f991c7d | 548 | scm_t_int32 offset; |
7e01997e AW |
549 | n = FETCH () << 8; |
550 | n += FETCH (); | |
7e01997e AW |
551 | FETCH_OFFSET (offset); |
552 | if (sp - (fp - 1) < n) | |
553 | ip += offset; | |
554 | NEXT; | |
555 | } | |
556 | ||
cf45ff03 | 557 | VM_DEFINE_INSTRUCTION (43, br_if_nargs_gt, "br-if-nargs-gt", 5, 0, 0) |
7e01997e AW |
558 | { |
559 | scm_t_ptrdiff n; | |
ff74e44e AW |
560 | scm_t_int32 offset; |
561 | ||
7e01997e AW |
562 | n = FETCH () << 8; |
563 | n += FETCH (); | |
7e01997e AW |
564 | FETCH_OFFSET (offset); |
565 | if (sp - (fp - 1) > n) | |
566 | ip += offset; | |
567 | NEXT; | |
568 | } | |
569 | ||
cf45ff03 | 570 | VM_DEFINE_INSTRUCTION (44, assert_nargs_ee, "assert-nargs-ee", 2, 0, 0) |
1e2a8c26 AW |
571 | { |
572 | scm_t_ptrdiff n; | |
573 | n = FETCH () << 8; | |
574 | n += FETCH (); | |
53bdfcf0 AW |
575 | VM_ASSERT (sp - (fp - 1) == n, |
576 | vm_error_wrong_num_args (program)); | |
1e2a8c26 AW |
577 | NEXT; |
578 | } | |
579 | ||
cf45ff03 | 580 | VM_DEFINE_INSTRUCTION (45, assert_nargs_ge, "assert-nargs-ge", 2, 0, 0) |
1e2a8c26 AW |
581 | { |
582 | scm_t_ptrdiff n; | |
583 | n = FETCH () << 8; | |
584 | n += FETCH (); | |
53bdfcf0 AW |
585 | VM_ASSERT (sp - (fp - 1) >= n, |
586 | vm_error_wrong_num_args (program)); | |
1e2a8c26 AW |
587 | NEXT; |
588 | } | |
589 | ||
cf45ff03 | 590 | VM_DEFINE_INSTRUCTION (46, bind_optionals, "bind-optionals", 2, -1, -1) |
7e01997e AW |
591 | { |
592 | scm_t_ptrdiff n; | |
593 | n = FETCH () << 8; | |
594 | n += FETCH (); | |
595 | while (sp - (fp - 1) < n) | |
596 | PUSH (SCM_UNDEFINED); | |
597 | NEXT; | |
598 | } | |
599 | ||
cf45ff03 | 600 | VM_DEFINE_INSTRUCTION (47, bind_optionals_shuffle, "bind-optionals/shuffle", 6, -1, -1) |
7e01997e AW |
601 | { |
602 | SCM *walk; | |
603 | scm_t_ptrdiff nreq, nreq_and_opt, ntotal; | |
604 | nreq = FETCH () << 8; | |
605 | nreq += FETCH (); | |
606 | nreq_and_opt = FETCH () << 8; | |
607 | nreq_and_opt += FETCH (); | |
608 | ntotal = FETCH () << 8; | |
609 | ntotal += FETCH (); | |
610 | ||
611 | /* look in optionals for first keyword or last positional */ | |
612 | /* starting after the last required positional arg */ | |
3092a14d | 613 | walk = fp + nreq; |
7e01997e AW |
614 | while (/* while we have args */ |
615 | walk <= sp | |
616 | /* and we still have positionals to fill */ | |
3092a14d | 617 | && walk - fp < nreq_and_opt |
7e01997e AW |
618 | /* and we haven't reached a keyword yet */ |
619 | && !scm_is_keyword (*walk)) | |
620 | /* bind this optional arg (by leaving it in place) */ | |
621 | walk++; | |
622 | /* now shuffle up, from walk to ntotal */ | |
623 | { | |
3092a14d | 624 | scm_t_ptrdiff nshuf = sp - walk + 1, i; |
7e01997e AW |
625 | sp = (fp - 1) + ntotal + nshuf; |
626 | CHECK_OVERFLOW (); | |
3092a14d AW |
627 | for (i = 0; i < nshuf; i++) |
628 | sp[-i] = walk[nshuf-i-1]; | |
7e01997e AW |
629 | } |
630 | /* and fill optionals & keyword args with SCM_UNDEFINED */ | |
3092a14d | 631 | while (walk <= (fp - 1) + ntotal) |
7e01997e AW |
632 | *walk++ = SCM_UNDEFINED; |
633 | ||
634 | NEXT; | |
635 | } | |
636 | ||
581f410f AW |
637 | /* See also bind-optionals/shuffle-or-br below. */ |
638 | ||
ff74e44e AW |
639 | /* Flags that determine whether other keywords are allowed, and whether a |
640 | rest argument is expected. These values must match those used by the | |
641 | glil->assembly compiler. */ | |
642 | #define F_ALLOW_OTHER_KEYS 1 | |
643 | #define F_REST 2 | |
644 | ||
cf45ff03 | 645 | VM_DEFINE_INSTRUCTION (48, bind_kwargs, "bind-kwargs", 5, 0, 0) |
7e01997e AW |
646 | { |
647 | scm_t_uint16 idx; | |
648 | scm_t_ptrdiff nkw; | |
ff74e44e | 649 | int kw_and_rest_flags; |
7e01997e AW |
650 | SCM kw; |
651 | idx = FETCH () << 8; | |
652 | idx += FETCH (); | |
ff74e44e | 653 | /* XXX: We don't actually use NKW. */ |
7e01997e AW |
654 | nkw = FETCH () << 8; |
655 | nkw += FETCH (); | |
ff74e44e | 656 | kw_and_rest_flags = FETCH (); |
7e01997e | 657 | |
53bdfcf0 AW |
658 | VM_ASSERT ((kw_and_rest_flags & F_REST) |
659 | || ((sp - (fp - 1) - nkw) % 2) == 0, | |
660 | vm_error_kwargs_length_not_even (program)) | |
7e01997e AW |
661 | |
662 | CHECK_OBJECT (idx); | |
663 | kw = OBJECT_REF (idx); | |
ff74e44e AW |
664 | |
665 | /* Switch NKW to be a negative index below SP. */ | |
666 | for (nkw = -(sp - (fp - 1) - nkw) + 1; nkw < 0; nkw++) | |
7e01997e AW |
667 | { |
668 | SCM walk; | |
ff74e44e AW |
669 | |
670 | if (scm_is_keyword (sp[nkw])) | |
671 | { | |
672 | for (walk = kw; scm_is_pair (walk); walk = SCM_CDR (walk)) | |
673 | { | |
674 | if (scm_is_eq (SCM_CAAR (walk), sp[nkw])) | |
675 | { | |
676 | SCM si = SCM_CDAR (walk); | |
677 | LOCAL_SET (SCM_I_INUMP (si) ? SCM_I_INUM (si) : scm_to_long (si), | |
678 | sp[nkw + 1]); | |
679 | break; | |
680 | } | |
681 | } | |
53bdfcf0 AW |
682 | VM_ASSERT (scm_is_pair (walk) |
683 | || (kw_and_rest_flags & F_ALLOW_OTHER_KEYS), | |
4af0d97e | 684 | vm_error_kwargs_unrecognized_keyword (program, sp[nkw])); |
ff74e44e AW |
685 | nkw++; |
686 | } | |
53bdfcf0 AW |
687 | else |
688 | VM_ASSERT (kw_and_rest_flags & F_REST, | |
4af0d97e | 689 | vm_error_kwargs_invalid_keyword (program, sp[nkw])); |
7e01997e AW |
690 | } |
691 | ||
692 | NEXT; | |
693 | } | |
694 | ||
ff74e44e AW |
695 | #undef F_ALLOW_OTHER_KEYS |
696 | #undef F_REST | |
697 | ||
698 | ||
cf45ff03 | 699 | VM_DEFINE_INSTRUCTION (49, push_rest, "push-rest", 2, -1, -1) |
1e2a8c26 AW |
700 | { |
701 | scm_t_ptrdiff n; | |
a6f15a1e | 702 | SCM rest = SCM_EOL; |
1e2a8c26 AW |
703 | n = FETCH () << 8; |
704 | n += FETCH (); | |
a6f15a1e | 705 | while (sp - (fp - 1) > n) |
1e2a8c26 AW |
706 | /* No need to check for underflow. */ |
707 | CONS (rest, *sp--, rest); | |
708 | PUSH (rest); | |
1e2a8c26 AW |
709 | NEXT; |
710 | } | |
711 | ||
cf45ff03 | 712 | VM_DEFINE_INSTRUCTION (50, bind_rest, "bind-rest", 4, -1, -1) |
899d37a6 AW |
713 | { |
714 | scm_t_ptrdiff n; | |
715 | scm_t_uint32 i; | |
716 | SCM rest = SCM_EOL; | |
717 | n = FETCH () << 8; | |
718 | n += FETCH (); | |
719 | i = FETCH () << 8; | |
720 | i += FETCH (); | |
721 | while (sp - (fp - 1) > n) | |
722 | /* No need to check for underflow. */ | |
723 | CONS (rest, *sp--, rest); | |
724 | LOCAL_SET (i, rest); | |
725 | NEXT; | |
726 | } | |
727 | ||
cf45ff03 | 728 | VM_DEFINE_INSTRUCTION (51, reserve_locals, "reserve-locals", 2, -1, -1) |
b7946e9e | 729 | { |
258344b4 | 730 | SCM *old_sp; |
55d9bc94 AW |
731 | scm_t_int32 n; |
732 | n = FETCH () << 8; | |
733 | n += FETCH (); | |
258344b4 AW |
734 | old_sp = sp; |
735 | sp = (fp - 1) + n; | |
736 | ||
737 | if (old_sp < sp) | |
738 | { | |
739 | CHECK_OVERFLOW (); | |
740 | while (old_sp < sp) | |
741 | *++old_sp = SCM_UNDEFINED; | |
742 | } | |
743 | else | |
744 | NULLSTACK (old_sp - sp); | |
745 | ||
55d9bc94 AW |
746 | NEXT; |
747 | } | |
748 | ||
cf45ff03 | 749 | VM_DEFINE_INSTRUCTION (52, new_frame, "new-frame", 0, 0, 3) |
b7946e9e | 750 | { |
6c6a4439 AW |
751 | /* NB: if you change this, see frames.c:vm-frame-num-locals */ |
752 | /* and frames.h, vm-engine.c, etc of course */ | |
9b709b0f AW |
753 | |
754 | /* We don't initialize the dynamic link here because we don't actually | |
755 | know that this frame will point to the current fp: it could be | |
756 | placed elsewhere on the stack if captured in a partial | |
757 | continuation, and invoked from some other context. */ | |
b2b33168 AW |
758 | PUSH (SCM_PACK (0)); /* dynamic link */ |
759 | PUSH (SCM_PACK (0)); /* mvra */ | |
760 | PUSH (SCM_PACK (0)); /* ra */ | |
b7946e9e AW |
761 | NEXT; |
762 | } | |
763 | ||
cf45ff03 | 764 | VM_DEFINE_INSTRUCTION (53, call, "call", 1, -1, 1) |
a98cef7e | 765 | { |
17e90c5e | 766 | nargs = FETCH (); |
a98cef7e KN |
767 | |
768 | vm_call: | |
e8c37772 | 769 | VM_HANDLE_INTERRUPTS; |
e311f5fa | 770 | |
9b709b0f AW |
771 | { |
772 | SCM *old_fp = fp; | |
773 | ||
774 | fp = sp - nargs + 1; | |
775 | ||
776 | ASSERT (SCM_FRAME_DYNAMIC_LINK (fp) == 0); | |
777 | ASSERT (SCM_FRAME_RETURN_ADDRESS (fp) == 0); | |
778 | ASSERT (SCM_FRAME_MV_RETURN_ADDRESS (fp) == 0); | |
779 | SCM_FRAME_SET_DYNAMIC_LINK (fp, old_fp); | |
780 | SCM_FRAME_SET_RETURN_ADDRESS (fp, ip); | |
781 | SCM_FRAME_SET_MV_RETURN_ADDRESS (fp, 0); | |
782 | } | |
783 | ||
c45d4d77 | 784 | PUSH_CONTINUATION_HOOK (); |
67b699cc AW |
785 | |
786 | program = fp[-1]; | |
787 | ||
788 | if (SCM_UNLIKELY (!SCM_PROGRAM_P (program))) | |
789 | goto apply; | |
790 | ||
791 | CACHE_PROGRAM (); | |
792 | ip = SCM_C_OBJCODE_BASE (bp); | |
793 | ||
75c3ed28 AW |
794 | APPLY_HOOK (); |
795 | NEXT; | |
a98cef7e KN |
796 | } |
797 | ||
cf45ff03 | 798 | VM_DEFINE_INSTRUCTION (54, tail_call, "tail-call", 1, -1, 1) |
a98cef7e | 799 | { |
17e90c5e | 800 | nargs = FETCH (); |
75c3ed28 | 801 | |
a5bbb22e | 802 | vm_tail_call: |
e8c37772 | 803 | VM_HANDLE_INTERRUPTS; |
a98cef7e | 804 | |
67b699cc AW |
805 | { |
806 | int i; | |
11ea1aba | 807 | #ifdef VM_ENABLE_STACK_NULLING |
67b699cc AW |
808 | SCM *old_sp = sp; |
809 | CHECK_STACK_LEAK (); | |
11ea1aba | 810 | #endif |
28106f54 | 811 | |
67b699cc AW |
812 | /* shuffle down the program and the arguments */ |
813 | for (i = -1, sp = sp - nargs + 1; i < nargs; i++) | |
814 | SCM_FRAME_STACK_ADDRESS (fp)[i] = sp[i]; | |
11ea1aba | 815 | |
67b699cc | 816 | sp = fp + i - 1; |
28106f54 | 817 | |
67b699cc AW |
818 | NULLSTACK (old_sp - sp); |
819 | } | |
11ea1aba | 820 | |
67b699cc | 821 | program = fp[-1]; |
11ea1aba | 822 | |
67b699cc AW |
823 | if (SCM_UNLIKELY (!SCM_PROGRAM_P (program))) |
824 | goto apply; | |
825 | ||
826 | CACHE_PROGRAM (); | |
827 | ip = SCM_C_OBJCODE_BASE (bp); | |
828 | ||
829 | APPLY_HOOK (); | |
830 | NEXT; | |
17e90c5e KN |
831 | } |
832 | ||
cf45ff03 | 833 | VM_DEFINE_INSTRUCTION (55, subr_call, "subr-call", 1, -1, -1) |
fd629322 | 834 | { |
5b46a8c2 | 835 | SCM pointer, ret; |
fd629322 | 836 | SCM (*subr)(); |
5b46a8c2 | 837 | |
fd629322 | 838 | nargs = FETCH (); |
5b46a8c2 | 839 | POP (pointer); |
fd629322 | 840 | |
5b46a8c2 | 841 | subr = SCM_POINTER_VALUE (pointer); |
fd629322 AW |
842 | |
843 | VM_HANDLE_INTERRUPTS; | |
844 | SYNC_REGISTER (); | |
845 | ||
846 | switch (nargs) | |
847 | { | |
848 | case 0: | |
849 | ret = subr (); | |
850 | break; | |
851 | case 1: | |
852 | ret = subr (sp[0]); | |
853 | break; | |
854 | case 2: | |
855 | ret = subr (sp[-1], sp[0]); | |
856 | break; | |
857 | case 3: | |
858 | ret = subr (sp[-2], sp[-1], sp[0]); | |
859 | break; | |
860 | case 4: | |
861 | ret = subr (sp[-3], sp[-2], sp[-1], sp[0]); | |
862 | break; | |
863 | case 5: | |
864 | ret = subr (sp[-4], sp[-3], sp[-2], sp[-1], sp[0]); | |
865 | break; | |
866 | case 6: | |
867 | ret = subr (sp[-5], sp[-4], sp[-3], sp[-2], sp[-1], sp[0]); | |
868 | break; | |
869 | case 7: | |
870 | ret = subr (sp[-6], sp[-5], sp[-4], sp[-3], sp[-2], sp[-1], sp[0]); | |
871 | break; | |
872 | case 8: | |
873 | ret = subr (sp[-7], sp[-6], sp[-5], sp[-4], sp[-3], sp[-2], sp[-1], sp[0]); | |
874 | break; | |
875 | case 9: | |
876 | ret = subr (sp[-8], sp[-7], sp[-6], sp[-5], sp[-4], sp[-3], sp[-2], sp[-1], sp[0]); | |
877 | break; | |
878 | case 10: | |
879 | ret = subr (sp[-9], sp[-8], sp[-7], sp[-6], sp[-5], sp[-4], sp[-3], sp[-2], sp[-1], sp[0]); | |
880 | break; | |
881 | default: | |
882 | abort (); | |
883 | } | |
884 | ||
885 | NULLSTACK_FOR_NONLOCAL_EXIT (); | |
fd629322 AW |
886 | |
887 | if (SCM_UNLIKELY (SCM_VALUESP (ret))) | |
888 | { | |
889 | /* multiple values returned to continuation */ | |
890 | ret = scm_struct_ref (ret, SCM_INUM0); | |
891 | nvalues = scm_ilength (ret); | |
892 | PUSH_LIST (ret, scm_is_null); | |
893 | goto vm_return_values; | |
894 | } | |
895 | else | |
896 | { | |
897 | PUSH (ret); | |
898 | goto vm_return; | |
899 | } | |
900 | } | |
901 | ||
cf45ff03 | 902 | VM_DEFINE_INSTRUCTION (56, smob_call, "smob-call", 1, -1, -1) |
75c3ed28 AW |
903 | { |
904 | SCM smob, ret; | |
905 | SCM (*subr)(); | |
906 | nargs = FETCH (); | |
907 | POP (smob); | |
908 | ||
909 | subr = SCM_SMOB_DESCRIPTOR (smob).apply; | |
910 | ||
911 | VM_HANDLE_INTERRUPTS; | |
912 | SYNC_REGISTER (); | |
913 | ||
914 | switch (nargs) | |
915 | { | |
916 | case 0: | |
917 | ret = subr (smob); | |
918 | break; | |
919 | case 1: | |
920 | ret = subr (smob, sp[0]); | |
921 | break; | |
922 | case 2: | |
923 | ret = subr (smob, sp[-1], sp[0]); | |
924 | break; | |
925 | case 3: | |
926 | ret = subr (smob, sp[-2], sp[-1], sp[0]); | |
927 | break; | |
928 | default: | |
929 | abort (); | |
930 | } | |
931 | ||
932 | NULLSTACK_FOR_NONLOCAL_EXIT (); | |
75c3ed28 AW |
933 | |
934 | if (SCM_UNLIKELY (SCM_VALUESP (ret))) | |
935 | { | |
936 | /* multiple values returned to continuation */ | |
937 | ret = scm_struct_ref (ret, SCM_INUM0); | |
938 | nvalues = scm_ilength (ret); | |
939 | PUSH_LIST (ret, scm_is_null); | |
940 | goto vm_return_values; | |
941 | } | |
942 | else | |
943 | { | |
944 | PUSH (ret); | |
945 | goto vm_return; | |
946 | } | |
947 | } | |
948 | ||
cf45ff03 | 949 | VM_DEFINE_INSTRUCTION (57, foreign_call, "foreign-call", 1, -1, -1) |
827dc8dc AW |
950 | { |
951 | SCM foreign, ret; | |
952 | nargs = FETCH (); | |
953 | POP (foreign); | |
954 | ||
955 | VM_HANDLE_INTERRUPTS; | |
956 | SYNC_REGISTER (); | |
957 | ||
4d9130a5 | 958 | ret = scm_i_foreign_call (foreign, sp - nargs + 1); |
827dc8dc AW |
959 | |
960 | NULLSTACK_FOR_NONLOCAL_EXIT (); | |
961 | ||
962 | if (SCM_UNLIKELY (SCM_VALUESP (ret))) | |
963 | { | |
964 | /* multiple values returned to continuation */ | |
965 | ret = scm_struct_ref (ret, SCM_INUM0); | |
966 | nvalues = scm_ilength (ret); | |
967 | PUSH_LIST (ret, scm_is_null); | |
968 | goto vm_return_values; | |
969 | } | |
970 | else | |
971 | { | |
972 | PUSH (ret); | |
973 | goto vm_return; | |
974 | } | |
975 | } | |
976 | ||
cf45ff03 | 977 | VM_DEFINE_INSTRUCTION (58, continuation_call, "continuation-call", 0, -1, 0) |
1d1cae0e AW |
978 | { |
979 | SCM contregs; | |
980 | POP (contregs); | |
d8873dfe | 981 | |
f7cea645 | 982 | SYNC_ALL (); |
d8873dfe AW |
983 | scm_i_check_continuation (contregs); |
984 | vm_return_to_continuation (scm_i_contregs_vm (contregs), | |
985 | scm_i_contregs_vm_cont (contregs), | |
986 | sp - (fp - 1), fp); | |
987 | scm_i_reinstate_continuation (contregs); | |
988 | ||
a39b116f | 989 | /* no NEXT */ |
1d1cae0e AW |
990 | abort (); |
991 | } | |
992 | ||
cf45ff03 | 993 | VM_DEFINE_INSTRUCTION (59, partial_cont_call, "partial-cont-call", 0, -1, 0) |
cee1d22c | 994 | { |
adbdfd6d | 995 | SCM vmcont, intwinds, prevwinds; |
eae2438d | 996 | POP2 (intwinds, vmcont); |
07801437 | 997 | SYNC_REGISTER (); |
53bdfcf0 AW |
998 | VM_ASSERT (SCM_VM_CONT_REWINDABLE_P (vmcont), |
999 | vm_error_continuation_not_rewindable (vmcont)); | |
adbdfd6d AW |
1000 | prevwinds = scm_i_dynwinds (); |
1001 | vm_reinstate_partial_continuation (vm, vmcont, intwinds, sp + 1 - fp, fp, | |
1002 | vm_cookie); | |
1003 | ||
1004 | /* Rewind prompt jmpbuffers, if any. */ | |
1005 | { | |
1006 | SCM winds = scm_i_dynwinds (); | |
1007 | for (; !scm_is_eq (winds, prevwinds); winds = scm_cdr (winds)) | |
1008 | if (SCM_PROMPT_P (scm_car (winds)) && SCM_PROMPT_SETJMP (scm_car (winds))) | |
1009 | break; | |
1010 | } | |
1011 | ||
07801437 AW |
1012 | CACHE_REGISTER (); |
1013 | program = SCM_FRAME_PROGRAM (fp); | |
1014 | CACHE_PROGRAM (); | |
cee1d22c AW |
1015 | NEXT; |
1016 | } | |
1017 | ||
cf45ff03 | 1018 | VM_DEFINE_INSTRUCTION (60, tail_call_nargs, "tail-call/nargs", 0, 0, 1) |
efbd5892 AW |
1019 | { |
1020 | SCM x; | |
1021 | POP (x); | |
1022 | nargs = scm_to_int (x); | |
d51406fe | 1023 | /* FIXME: should truncate values? */ |
a5bbb22e | 1024 | goto vm_tail_call; |
efbd5892 AW |
1025 | } |
1026 | ||
cf45ff03 | 1027 | VM_DEFINE_INSTRUCTION (61, call_nargs, "call/nargs", 0, 0, 1) |
efbd5892 AW |
1028 | { |
1029 | SCM x; | |
1030 | POP (x); | |
1031 | nargs = scm_to_int (x); | |
d51406fe | 1032 | /* FIXME: should truncate values? */ |
efbd5892 AW |
1033 | goto vm_call; |
1034 | } | |
1035 | ||
cf45ff03 | 1036 | VM_DEFINE_INSTRUCTION (62, mv_call, "mv-call", 4, -1, 1) |
a222b0fa | 1037 | { |
97fcf583 | 1038 | scm_t_int32 offset; |
e5dc27b8 | 1039 | scm_t_uint8 *mvra; |
67b699cc | 1040 | SCM *old_fp = fp; |
a222b0fa AW |
1041 | |
1042 | nargs = FETCH (); | |
efbd5892 | 1043 | FETCH_OFFSET (offset); |
97fcf583 | 1044 | mvra = ip + offset; |
a222b0fa | 1045 | |
7d94e4af AW |
1046 | VM_HANDLE_INTERRUPTS; |
1047 | ||
67b699cc AW |
1048 | fp = sp - nargs + 1; |
1049 | ||
1050 | ASSERT (SCM_FRAME_DYNAMIC_LINK (fp) == 0); | |
1051 | ASSERT (SCM_FRAME_RETURN_ADDRESS (fp) == 0); | |
1052 | ASSERT (SCM_FRAME_MV_RETURN_ADDRESS (fp) == 0); | |
1053 | SCM_FRAME_SET_DYNAMIC_LINK (fp, old_fp); | |
1054 | SCM_FRAME_SET_RETURN_ADDRESS (fp, ip); | |
1055 | SCM_FRAME_SET_MV_RETURN_ADDRESS (fp, mvra); | |
1056 | ||
1057 | PUSH_CONTINUATION_HOOK (); | |
a222b0fa | 1058 | |
67b699cc | 1059 | program = fp[-1]; |
9b709b0f | 1060 | |
67b699cc AW |
1061 | if (SCM_UNLIKELY (!SCM_PROGRAM_P (program))) |
1062 | goto apply; | |
9b709b0f | 1063 | |
67b699cc | 1064 | CACHE_PROGRAM (); |
75c3ed28 | 1065 | ip = SCM_C_OBJCODE_BASE (bp); |
67b699cc | 1066 | |
75c3ed28 AW |
1067 | APPLY_HOOK (); |
1068 | NEXT; | |
a222b0fa AW |
1069 | } |
1070 | ||
cf45ff03 | 1071 | VM_DEFINE_INSTRUCTION (63, apply, "apply", 1, -1, 1) |
3616e9e9 | 1072 | { |
c8b9df71 KN |
1073 | int len; |
1074 | SCM ls; | |
1075 | POP (ls); | |
1076 | ||
1077 | nargs = FETCH (); | |
9a8cc8e7 | 1078 | ASSERT (nargs >= 2); |
c8b9df71 KN |
1079 | |
1080 | len = scm_ilength (ls); | |
53bdfcf0 AW |
1081 | VM_ASSERT (len >= 0, |
1082 | vm_error_apply_to_non_list (ls)); | |
fb10a008 | 1083 | PUSH_LIST (ls, SCM_NULL_OR_NIL_P); |
c8b9df71 KN |
1084 | |
1085 | nargs += len - 2; | |
1086 | goto vm_call; | |
3616e9e9 KN |
1087 | } |
1088 | ||
cf45ff03 | 1089 | VM_DEFINE_INSTRUCTION (64, tail_apply, "tail-apply", 1, -1, 1) |
f03c31db AW |
1090 | { |
1091 | int len; | |
1092 | SCM ls; | |
1093 | POP (ls); | |
1094 | ||
1095 | nargs = FETCH (); | |
9a8cc8e7 | 1096 | ASSERT (nargs >= 2); |
f03c31db AW |
1097 | |
1098 | len = scm_ilength (ls); | |
53bdfcf0 AW |
1099 | VM_ASSERT (len >= 0, |
1100 | vm_error_apply_to_non_list (ls)); | |
fb10a008 | 1101 | PUSH_LIST (ls, SCM_NULL_OR_NIL_P); |
f03c31db AW |
1102 | |
1103 | nargs += len - 2; | |
a5bbb22e | 1104 | goto vm_tail_call; |
f03c31db AW |
1105 | } |
1106 | ||
cf45ff03 | 1107 | VM_DEFINE_INSTRUCTION (65, call_cc, "call/cc", 0, 1, 1) |
17e90c5e | 1108 | { |
76282387 | 1109 | int first; |
d8873dfe | 1110 | SCM proc, vm_cont, cont; |
76282387 AW |
1111 | POP (proc); |
1112 | SYNC_ALL (); | |
cee1d22c | 1113 | vm_cont = scm_i_vm_capture_stack (vp->stack_base, fp, sp, ip, NULL, 0); |
d8873dfe | 1114 | cont = scm_i_make_continuation (&first, vm, vm_cont); |
76282387 AW |
1115 | if (first) |
1116 | { | |
b2b33168 AW |
1117 | PUSH (SCM_PACK (0)); /* dynamic link */ |
1118 | PUSH (SCM_PACK (0)); /* mvra */ | |
1119 | PUSH (SCM_PACK (0)); /* ra */ | |
76282387 AW |
1120 | PUSH (proc); |
1121 | PUSH (cont); | |
1122 | nargs = 1; | |
1123 | goto vm_call; | |
1124 | } | |
d8873dfe | 1125 | else |
76282387 | 1126 | { |
f3120251 AW |
1127 | /* Otherwise, the vm continuation was reinstated, and |
1128 | vm_return_to_continuation pushed on one value. We know only one | |
1129 | value was returned because we are in value context -- the | |
1130 | previous block jumped to vm_call, not vm_mv_call, after all. | |
1131 | ||
1132 | So, pull our regs back down from the vp, and march on to the | |
1133 | next instruction. */ | |
d8873dfe AW |
1134 | CACHE_REGISTER (); |
1135 | program = SCM_FRAME_PROGRAM (fp); | |
1136 | CACHE_PROGRAM (); | |
f3120251 | 1137 | RESTORE_CONTINUATION_HOOK (); |
76282387 AW |
1138 | NEXT; |
1139 | } | |
a98cef7e KN |
1140 | } |
1141 | ||
cf45ff03 | 1142 | VM_DEFINE_INSTRUCTION (66, tail_call_cc, "tail-call/cc", 0, 1, 1) |
f03c31db | 1143 | { |
76282387 | 1144 | int first; |
d8873dfe | 1145 | SCM proc, vm_cont, cont; |
76282387 AW |
1146 | POP (proc); |
1147 | SYNC_ALL (); | |
d8873dfe AW |
1148 | /* In contrast to call/cc, tail-call/cc captures the continuation without the |
1149 | stack frame. */ | |
cee1d22c AW |
1150 | vm_cont = scm_i_vm_capture_stack (vp->stack_base, |
1151 | SCM_FRAME_DYNAMIC_LINK (fp), | |
1152 | SCM_FRAME_LOWER_ADDRESS (fp) - 1, | |
1153 | SCM_FRAME_RETURN_ADDRESS (fp), | |
1154 | SCM_FRAME_MV_RETURN_ADDRESS (fp), | |
1155 | 0); | |
d8873dfe | 1156 | cont = scm_i_make_continuation (&first, vm, vm_cont); |
76282387 AW |
1157 | if (first) |
1158 | { | |
1159 | PUSH (proc); | |
1160 | PUSH (cont); | |
1161 | nargs = 1; | |
a5bbb22e | 1162 | goto vm_tail_call; |
76282387 | 1163 | } |
76282387 AW |
1164 | else |
1165 | { | |
d8873dfe | 1166 | /* Otherwise, cache regs and NEXT, as above. Invoking the continuation |
f3120251 AW |
1167 | does a return from the frame, either to the RA or |
1168 | MVRA. */ | |
d8873dfe AW |
1169 | CACHE_REGISTER (); |
1170 | program = SCM_FRAME_PROGRAM (fp); | |
1171 | CACHE_PROGRAM (); | |
f3120251 AW |
1172 | /* Unfortunately we don't know whether we are at the RA, and thus |
1173 | have one value without an nvalues marker, or we are at the | |
1174 | MVRA and thus have multiple values and the nvalues | |
1175 | marker. Instead of adding heuristics here, we will let hook | |
1176 | client code do that. */ | |
1177 | RESTORE_CONTINUATION_HOOK (); | |
d8873dfe | 1178 | NEXT; |
76282387 | 1179 | } |
f03c31db AW |
1180 | } |
1181 | ||
cf45ff03 | 1182 | VM_DEFINE_INSTRUCTION (67, return, "return", 0, 1, 1) |
a98cef7e | 1183 | { |
a98cef7e | 1184 | vm_return: |
c45d4d77 | 1185 | POP_CONTINUATION_HOOK (1); |
e8c37772 AW |
1186 | |
1187 | VM_HANDLE_INTERRUPTS; | |
1188 | ||
f13c269b | 1189 | { |
03e6c165 | 1190 | SCM ret; |
f13c269b AW |
1191 | |
1192 | POP (ret); | |
6c6a4439 AW |
1193 | |
1194 | #ifdef VM_ENABLE_STACK_NULLING | |
1195 | SCM *old_sp = sp; | |
1196 | #endif | |
f13c269b AW |
1197 | |
1198 | /* Restore registers */ | |
1199 | sp = SCM_FRAME_LOWER_ADDRESS (fp); | |
03e6c165 AW |
1200 | ip = SCM_FRAME_RETURN_ADDRESS (fp); |
1201 | fp = SCM_FRAME_DYNAMIC_LINK (fp); | |
6c6a4439 | 1202 | |
11ea1aba | 1203 | #ifdef VM_ENABLE_STACK_NULLING |
6c6a4439 | 1204 | NULLSTACK (old_sp - sp); |
11ea1aba | 1205 | #endif |
f13c269b AW |
1206 | |
1207 | /* Set return value (sp is already pushed) */ | |
1208 | *sp = ret; | |
1209 | } | |
17e90c5e | 1210 | |
15df3447 | 1211 | /* Restore the last program */ |
af988bbf | 1212 | program = SCM_FRAME_PROGRAM (fp); |
499a4c07 | 1213 | CACHE_PROGRAM (); |
7e4760e4 | 1214 | CHECK_IP (); |
a98cef7e KN |
1215 | NEXT; |
1216 | } | |
17e90c5e | 1217 | |
cf45ff03 | 1218 | VM_DEFINE_INSTRUCTION (68, return_values, "return/values", 1, -1, -1) |
a222b0fa | 1219 | { |
ef24c01b AW |
1220 | /* nvalues declared at top level, because for some reason gcc seems to think |
1221 | that perhaps it might be used without declaration. Fooey to that, I say. */ | |
ef24c01b AW |
1222 | nvalues = FETCH (); |
1223 | vm_return_values: | |
c45d4d77 | 1224 | POP_CONTINUATION_HOOK (nvalues); |
ef24c01b | 1225 | |
7d94e4af AW |
1226 | VM_HANDLE_INTERRUPTS; |
1227 | ||
03e6c165 | 1228 | if (nvalues != 1 && SCM_FRAME_MV_RETURN_ADDRESS (fp)) |
ef24c01b | 1229 | { |
6c6a4439 AW |
1230 | /* A multiply-valued continuation */ |
1231 | SCM *vals = sp - nvalues; | |
ef24c01b AW |
1232 | int i; |
1233 | /* Restore registers */ | |
1234 | sp = SCM_FRAME_LOWER_ADDRESS (fp) - 1; | |
03e6c165 AW |
1235 | ip = SCM_FRAME_MV_RETURN_ADDRESS (fp); |
1236 | fp = SCM_FRAME_DYNAMIC_LINK (fp); | |
5e80f2ce | 1237 | |
ef24c01b AW |
1238 | /* Push return values, and the number of values */ |
1239 | for (i = 0; i < nvalues; i++) | |
6c6a4439 | 1240 | *++sp = vals[i+1]; |
ef24c01b | 1241 | *++sp = SCM_I_MAKINUM (nvalues); |
a222b0fa | 1242 | |
6c6a4439 AW |
1243 | /* Finally null the end of the stack */ |
1244 | NULLSTACK (vals + nvalues - sp); | |
ef24c01b AW |
1245 | } |
1246 | else if (nvalues >= 1) | |
1247 | { | |
1248 | /* Multiple values for a single-valued continuation -- here's where I | |
1249 | break with guile tradition and try and do something sensible. (Also, | |
1250 | this block handles the single-valued return to an mv | |
1251 | continuation.) */ | |
6c6a4439 | 1252 | SCM *vals = sp - nvalues; |
ef24c01b AW |
1253 | /* Restore registers */ |
1254 | sp = SCM_FRAME_LOWER_ADDRESS (fp) - 1; | |
03e6c165 AW |
1255 | ip = SCM_FRAME_RETURN_ADDRESS (fp); |
1256 | fp = SCM_FRAME_DYNAMIC_LINK (fp); | |
5e80f2ce | 1257 | |
ef24c01b | 1258 | /* Push first value */ |
6c6a4439 | 1259 | *++sp = vals[1]; |
a222b0fa | 1260 | |
6c6a4439 AW |
1261 | /* Finally null the end of the stack */ |
1262 | NULLSTACK (vals + nvalues - sp); | |
ef24c01b AW |
1263 | } |
1264 | else | |
53bdfcf0 AW |
1265 | { |
1266 | SYNC_ALL (); | |
1267 | vm_error_no_values (); | |
1268 | } | |
a222b0fa AW |
1269 | |
1270 | /* Restore the last program */ | |
1271 | program = SCM_FRAME_PROGRAM (fp); | |
1272 | CACHE_PROGRAM (); | |
a222b0fa AW |
1273 | CHECK_IP (); |
1274 | NEXT; | |
1275 | } | |
1276 | ||
cf45ff03 | 1277 | VM_DEFINE_INSTRUCTION (69, return_values_star, "return/values*", 1, -1, -1) |
ef24c01b AW |
1278 | { |
1279 | SCM l; | |
1280 | ||
1281 | nvalues = FETCH (); | |
11ea1aba | 1282 | ASSERT (nvalues >= 1); |
ef24c01b AW |
1283 | |
1284 | nvalues--; | |
1285 | POP (l); | |
9bd48cb1 | 1286 | while (scm_is_pair (l)) |
ef24c01b AW |
1287 | { |
1288 | PUSH (SCM_CAR (l)); | |
1289 | l = SCM_CDR (l); | |
1290 | nvalues++; | |
1291 | } | |
53bdfcf0 | 1292 | VM_ASSERT (SCM_NULL_OR_NIL_P (l), vm_error_improper_list (l)); |
ef24c01b AW |
1293 | |
1294 | goto vm_return_values; | |
1295 | } | |
1296 | ||
cf45ff03 | 1297 | VM_DEFINE_INSTRUCTION (70, return_nvalues, "return/nvalues", 0, 1, -1) |
2d9260d1 AW |
1298 | { |
1299 | SCM n; | |
1300 | POP (n); | |
1301 | nvalues = scm_to_int (n); | |
1302 | ASSERT (nvalues >= 0); | |
1303 | goto vm_return_values; | |
1304 | } | |
1305 | ||
cf45ff03 | 1306 | VM_DEFINE_INSTRUCTION (71, truncate_values, "truncate-values", 2, -1, -1) |
d51406fe AW |
1307 | { |
1308 | SCM x; | |
1309 | int nbinds, rest; | |
1310 | POP (x); | |
1311 | nvalues = scm_to_int (x); | |
1312 | nbinds = FETCH (); | |
1313 | rest = FETCH (); | |
1314 | ||
1315 | if (rest) | |
1316 | nbinds--; | |
1317 | ||
53bdfcf0 | 1318 | VM_ASSERT (nvalues >= nbinds, vm_error_not_enough_values ()); |
d51406fe AW |
1319 | |
1320 | if (rest) | |
1321 | POP_LIST (nvalues - nbinds); | |
1322 | else | |
1323 | DROPN (nvalues - nbinds); | |
1324 | ||
1325 | NEXT; | |
1326 | } | |
1327 | ||
cf45ff03 | 1328 | VM_DEFINE_INSTRUCTION (72, box, "box", 1, 1, 0) |
a9b0f876 | 1329 | { |
8d90b356 AW |
1330 | SCM val; |
1331 | POP (val); | |
1332 | SYNC_BEFORE_GC (); | |
1333 | LOCAL_SET (FETCH (), scm_cell (scm_tc7_variable, SCM_UNPACK (val))); | |
a9b0f876 AW |
1334 | NEXT; |
1335 | } | |
1336 | ||
8d90b356 AW |
1337 | /* for letrec: |
1338 | (let ((a *undef*) (b *undef*) ...) | |
1339 | (set! a (lambda () (b ...))) | |
1340 | ...) | |
1341 | */ | |
cf45ff03 | 1342 | VM_DEFINE_INSTRUCTION (73, empty_box, "empty-box", 1, 0, 0) |
a9b0f876 | 1343 | { |
8d90b356 AW |
1344 | SYNC_BEFORE_GC (); |
1345 | LOCAL_SET (FETCH (), | |
1346 | scm_cell (scm_tc7_variable, SCM_UNPACK (SCM_UNDEFINED))); | |
1347 | NEXT; | |
1348 | } | |
a9b0f876 | 1349 | |
cf45ff03 | 1350 | VM_DEFINE_INSTRUCTION (74, local_boxed_ref, "local-boxed-ref", 1, 0, 1) |
8d90b356 AW |
1351 | { |
1352 | SCM v = LOCAL_REF (FETCH ()); | |
1353 | ASSERT_BOUND_VARIABLE (v); | |
1354 | PUSH (VARIABLE_REF (v)); | |
1355 | NEXT; | |
1356 | } | |
a9b0f876 | 1357 | |
cf45ff03 | 1358 | VM_DEFINE_INSTRUCTION (75, local_boxed_set, "local-boxed-set", 1, 1, 0) |
8d90b356 AW |
1359 | { |
1360 | SCM v, val; | |
1361 | v = LOCAL_REF (FETCH ()); | |
1362 | POP (val); | |
1363 | ASSERT_VARIABLE (v); | |
1364 | VARIABLE_SET (v, val); | |
a9b0f876 AW |
1365 | NEXT; |
1366 | } | |
1367 | ||
cf45ff03 | 1368 | VM_DEFINE_INSTRUCTION (76, free_ref, "free-ref", 1, 0, 1) |
a9b0f876 | 1369 | { |
8d90b356 AW |
1370 | scm_t_uint8 idx = FETCH (); |
1371 | ||
57ab0671 AW |
1372 | CHECK_FREE_VARIABLE (idx); |
1373 | PUSH (FREE_VARIABLE_REF (idx)); | |
8d90b356 AW |
1374 | NEXT; |
1375 | } | |
a9b0f876 | 1376 | |
57ab0671 | 1377 | /* no free-set -- if a var is assigned, it should be in a box */ |
a9b0f876 | 1378 | |
cf45ff03 | 1379 | VM_DEFINE_INSTRUCTION (77, free_boxed_ref, "free-boxed-ref", 1, 0, 1) |
8d90b356 AW |
1380 | { |
1381 | SCM v; | |
1382 | scm_t_uint8 idx = FETCH (); | |
57ab0671 AW |
1383 | CHECK_FREE_VARIABLE (idx); |
1384 | v = FREE_VARIABLE_REF (idx); | |
8d90b356 AW |
1385 | ASSERT_BOUND_VARIABLE (v); |
1386 | PUSH (VARIABLE_REF (v)); | |
1387 | NEXT; | |
1388 | } | |
1389 | ||
cf45ff03 | 1390 | VM_DEFINE_INSTRUCTION (78, free_boxed_set, "free-boxed-set", 1, 1, 0) |
8d90b356 AW |
1391 | { |
1392 | SCM v, val; | |
1393 | scm_t_uint8 idx = FETCH (); | |
1394 | POP (val); | |
57ab0671 AW |
1395 | CHECK_FREE_VARIABLE (idx); |
1396 | v = FREE_VARIABLE_REF (idx); | |
8d90b356 AW |
1397 | ASSERT_BOUND_VARIABLE (v); |
1398 | VARIABLE_SET (v, val); | |
1399 | NEXT; | |
1400 | } | |
1401 | ||
cf45ff03 | 1402 | VM_DEFINE_INSTRUCTION (79, make_closure, "make-closure", 2, -1, 1) |
8d90b356 | 1403 | { |
6f16379e AW |
1404 | size_t n, len; |
1405 | SCM closure; | |
1406 | ||
1407 | len = FETCH (); | |
1408 | len <<= 8; | |
1409 | len += FETCH (); | |
8d90b356 | 1410 | SYNC_BEFORE_GC (); |
6f16379e AW |
1411 | closure = scm_words (scm_tc7_program | (len<<16), len + 3); |
1412 | SCM_SET_CELL_OBJECT_1 (closure, SCM_PROGRAM_OBJCODE (sp[-len])); | |
1413 | SCM_SET_CELL_OBJECT_2 (closure, SCM_PROGRAM_OBJTABLE (sp[-len])); | |
1414 | sp[-len] = closure; | |
1415 | for (n = 0; n < len; n++) | |
1416 | SCM_PROGRAM_FREE_VARIABLE_SET (closure, n, sp[-len + 1 + n]); | |
1417 | DROPN (len); | |
a9b0f876 AW |
1418 | NEXT; |
1419 | } | |
1420 | ||
cf45ff03 | 1421 | VM_DEFINE_INSTRUCTION (80, make_variable, "make-variable", 0, 0, 1) |
80545853 AW |
1422 | { |
1423 | SYNC_BEFORE_GC (); | |
1424 | /* fixme underflow */ | |
1425 | PUSH (scm_cell (scm_tc7_variable, SCM_UNPACK (SCM_UNDEFINED))); | |
1426 | NEXT; | |
1427 | } | |
1428 | ||
cf45ff03 | 1429 | VM_DEFINE_INSTRUCTION (81, fix_closure, "fix-closure", 2, -1, 0) |
c21c89b1 | 1430 | { |
6f16379e | 1431 | SCM x; |
c21c89b1 | 1432 | unsigned int i = FETCH (); |
6f16379e | 1433 | size_t n, len; |
c21c89b1 AW |
1434 | i <<= 8; |
1435 | i += FETCH (); | |
c21c89b1 AW |
1436 | /* FIXME CHECK_LOCAL (i) */ |
1437 | x = LOCAL_REF (i); | |
1438 | /* FIXME ASSERT_PROGRAM (x); */ | |
6f16379e AW |
1439 | len = SCM_PROGRAM_NUM_FREE_VARIABLES (x); |
1440 | for (n = 0; n < len; n++) | |
1441 | SCM_PROGRAM_FREE_VARIABLE_SET (x, n, sp[-len + 1 + n]); | |
1442 | DROPN (len); | |
c21c89b1 AW |
1443 | NEXT; |
1444 | } | |
1445 | ||
cf45ff03 | 1446 | VM_DEFINE_INSTRUCTION (82, define, "define", 0, 0, 2) |
94ff26b9 AW |
1447 | { |
1448 | SCM sym, val; | |
eae2438d | 1449 | POP2 (sym, val); |
94ff26b9 | 1450 | SYNC_REGISTER (); |
62e15979 | 1451 | scm_define (sym, val); |
94ff26b9 AW |
1452 | NEXT; |
1453 | } | |
1454 | ||
cf45ff03 | 1455 | VM_DEFINE_INSTRUCTION (83, make_keyword, "make-keyword", 0, 1, 1) |
94ff26b9 AW |
1456 | { |
1457 | CHECK_UNDERFLOW (); | |
1458 | SYNC_REGISTER (); | |
1459 | *sp = scm_symbol_to_keyword (*sp); | |
1460 | NEXT; | |
1461 | } | |
1462 | ||
cf45ff03 | 1463 | VM_DEFINE_INSTRUCTION (84, make_symbol, "make-symbol", 0, 1, 1) |
94ff26b9 AW |
1464 | { |
1465 | CHECK_UNDERFLOW (); | |
1466 | SYNC_REGISTER (); | |
1467 | *sp = scm_string_to_symbol (*sp); | |
1468 | NEXT; | |
1469 | } | |
1470 | ||
cf45ff03 | 1471 | VM_DEFINE_INSTRUCTION (85, prompt, "prompt", 4, 2, 0) |
4f66bcde AW |
1472 | { |
1473 | scm_t_int32 offset; | |
ea6b18e8 | 1474 | scm_t_uint8 escape_only_p; |
747022e4 | 1475 | SCM k, prompt; |
4f66bcde | 1476 | |
4f66bcde AW |
1477 | escape_only_p = FETCH (); |
1478 | FETCH_OFFSET (offset); | |
4f66bcde AW |
1479 | POP (k); |
1480 | ||
1481 | SYNC_REGISTER (); | |
d2964315 | 1482 | /* Push the prompt onto the dynamic stack. */ |
adbdfd6d AW |
1483 | prompt = scm_c_make_prompt (k, fp, sp, ip + offset, escape_only_p, vm_cookie, |
1484 | scm_i_dynwinds ()); | |
1485 | scm_i_set_dynwinds (scm_cons (prompt, SCM_PROMPT_DYNWINDS (prompt))); | |
adaf86ec | 1486 | if (SCM_PROMPT_SETJMP (prompt)) |
4f66bcde AW |
1487 | { |
1488 | /* The prompt exited nonlocally. Cache the regs back from the vp, and go | |
ea6b18e8 | 1489 | to the handler. |
d2964315 AW |
1490 | |
1491 | Note, at this point, we must assume that any variable local to | |
1492 | vm_engine that can be assigned *has* been assigned. So we need to pull | |
1493 | all our state back from the ip/fp/sp. | |
ea6b18e8 | 1494 | */ |
d2964315 AW |
1495 | CACHE_REGISTER (); |
1496 | program = SCM_FRAME_PROGRAM (fp); | |
1497 | CACHE_PROGRAM (); | |
f3120251 AW |
1498 | /* The stack contains the values returned to this prompt, along |
1499 | with a number-of-values marker -- like an MV return. */ | |
1500 | ABORT_CONTINUATION_HOOK (); | |
4f66bcde AW |
1501 | NEXT; |
1502 | } | |
1503 | ||
1504 | /* Otherwise setjmp returned for the first time, so we go to execute the | |
1505 | prompt's body. */ | |
1506 | NEXT; | |
1507 | } | |
1508 | ||
cf45ff03 | 1509 | VM_DEFINE_INSTRUCTION (86, wind, "wind", 0, 2, 0) |
4f66bcde AW |
1510 | { |
1511 | SCM wind, unwind; | |
eae2438d | 1512 | POP2 (unwind, wind); |
4f66bcde AW |
1513 | SYNC_REGISTER (); |
1514 | /* Push wind and unwind procedures onto the dynamic stack. Note that neither | |
1515 | are actually called; the compiler should emit calls to wind and unwind for | |
1516 | the normal dynamic-wind control flow. */ | |
e9c898bf LC |
1517 | VM_ASSERT (scm_to_bool (scm_thunk_p (wind)), |
1518 | vm_error_not_a_thunk ("dynamic-wind", wind)); | |
1519 | VM_ASSERT (scm_to_bool (scm_thunk_p (unwind)), | |
1520 | vm_error_not_a_thunk ("dynamic-wind", unwind)); | |
4f66bcde AW |
1521 | scm_i_set_dynwinds (scm_cons (scm_cons (wind, unwind), scm_i_dynwinds ())); |
1522 | NEXT; | |
1523 | } | |
1524 | ||
cf45ff03 | 1525 | VM_DEFINE_INSTRUCTION (87, abort, "abort", 1, -1, -1) |
4f66bcde AW |
1526 | { |
1527 | unsigned n = FETCH (); | |
4f66bcde | 1528 | SYNC_REGISTER (); |
53bdfcf0 | 1529 | PRE_CHECK_UNDERFLOW (n + 2); |
cee1d22c | 1530 | vm_abort (vm, n, vm_cookie); |
6e84cb95 | 1531 | /* vm_abort should not return */ |
4f66bcde AW |
1532 | abort (); |
1533 | } | |
1534 | ||
cf45ff03 | 1535 | VM_DEFINE_INSTRUCTION (88, unwind, "unwind", 0, 0, 0) |
4f66bcde AW |
1536 | { |
1537 | /* A normal exit from the dynamic extent of an expression. Pop the top entry | |
1538 | off of the dynamic stack. */ | |
1539 | scm_i_set_dynwinds (scm_cdr (scm_i_dynwinds ())); | |
1540 | NEXT; | |
1541 | } | |
1542 | ||
cf45ff03 | 1543 | VM_DEFINE_INSTRUCTION (89, wind_fluids, "wind-fluids", 1, -1, 0) |
e084b27e AW |
1544 | { |
1545 | unsigned n = FETCH (); | |
1546 | SCM wf; | |
1547 | ||
f7cea645 | 1548 | SYNC_REGISTER (); |
2b41a37b AW |
1549 | sp -= 2 * n; |
1550 | CHECK_UNDERFLOW (); | |
1551 | wf = scm_i_make_with_fluids (n, sp + 1, sp + 1 + n); | |
1552 | NULLSTACK (2 * n); | |
1553 | ||
a2a6c0e3 | 1554 | scm_i_swap_with_fluids (wf, current_thread->dynamic_state); |
e084b27e AW |
1555 | scm_i_set_dynwinds (scm_cons (wf, scm_i_dynwinds ())); |
1556 | NEXT; | |
1557 | } | |
1558 | ||
cf45ff03 | 1559 | VM_DEFINE_INSTRUCTION (90, unwind_fluids, "unwind-fluids", 0, 0, 0) |
e084b27e AW |
1560 | { |
1561 | SCM wf; | |
1562 | wf = scm_car (scm_i_dynwinds ()); | |
1563 | scm_i_set_dynwinds (scm_cdr (scm_i_dynwinds ())); | |
a2a6c0e3 | 1564 | scm_i_swap_with_fluids (wf, current_thread->dynamic_state); |
e084b27e AW |
1565 | NEXT; |
1566 | } | |
4f66bcde | 1567 | |
cf45ff03 | 1568 | VM_DEFINE_INSTRUCTION (91, fluid_ref, "fluid-ref", 0, 1, 1) |
1e7a0337 AW |
1569 | { |
1570 | size_t num; | |
1571 | SCM fluids; | |
1572 | ||
1573 | CHECK_UNDERFLOW (); | |
a2a6c0e3 | 1574 | fluids = SCM_I_DYNAMIC_STATE_FLUIDS (current_thread->dynamic_state); |
6f8d7b12 | 1575 | if (SCM_UNLIKELY (!SCM_FLUID_P (*sp)) |
1e7a0337 AW |
1576 | || ((num = SCM_I_FLUID_NUM (*sp)) >= SCM_SIMPLE_VECTOR_LENGTH (fluids))) |
1577 | { | |
1578 | /* Punt dynstate expansion and error handling to the C proc. */ | |
1579 | SYNC_REGISTER (); | |
1580 | *sp = scm_fluid_ref (*sp); | |
1581 | } | |
1582 | else | |
ef94624e BT |
1583 | { |
1584 | SCM val = SCM_SIMPLE_VECTOR_REF (fluids, num); | |
aafb4ed7 AW |
1585 | if (scm_is_eq (val, SCM_UNDEFINED)) |
1586 | val = SCM_I_FLUID_DEFAULT (*sp); | |
53bdfcf0 AW |
1587 | VM_ASSERT (!scm_is_eq (val, SCM_UNDEFINED), |
1588 | vm_error_unbound_fluid (program, *sp)); | |
ef94624e BT |
1589 | *sp = val; |
1590 | } | |
1e7a0337 AW |
1591 | |
1592 | NEXT; | |
1593 | } | |
1594 | ||
cf45ff03 | 1595 | VM_DEFINE_INSTRUCTION (92, fluid_set, "fluid-set", 0, 2, 0) |
1e7a0337 AW |
1596 | { |
1597 | size_t num; | |
1598 | SCM val, fluid, fluids; | |
1599 | ||
eae2438d | 1600 | POP2 (val, fluid); |
a2a6c0e3 | 1601 | fluids = SCM_I_DYNAMIC_STATE_FLUIDS (current_thread->dynamic_state); |
6f8d7b12 | 1602 | if (SCM_UNLIKELY (!SCM_FLUID_P (fluid)) |
1e7a0337 AW |
1603 | || ((num = SCM_I_FLUID_NUM (fluid)) >= SCM_SIMPLE_VECTOR_LENGTH (fluids))) |
1604 | { | |
1605 | /* Punt dynstate expansion and error handling to the C proc. */ | |
1606 | SYNC_REGISTER (); | |
1607 | scm_fluid_set_x (fluid, val); | |
1608 | } | |
1609 | else | |
1610 | SCM_SIMPLE_VECTOR_SET (fluids, num, val); | |
a39b116f | 1611 | |
1e7a0337 AW |
1612 | NEXT; |
1613 | } | |
1614 | ||
cf45ff03 | 1615 | VM_DEFINE_INSTRUCTION (93, assert_nargs_ee_locals, "assert-nargs-ee/locals", 1, 0, 0) |
de45d8ee AW |
1616 | { |
1617 | scm_t_ptrdiff n; | |
1618 | SCM *old_sp; | |
1619 | ||
1620 | /* nargs = n & 0x7, nlocs = nargs + (n >> 3) */ | |
1621 | n = FETCH (); | |
1622 | ||
53bdfcf0 AW |
1623 | VM_ASSERT (sp - (fp - 1) == (n & 0x7), |
1624 | vm_error_wrong_num_args (program)); | |
de45d8ee AW |
1625 | |
1626 | old_sp = sp; | |
1627 | sp += (n >> 3); | |
1628 | CHECK_OVERFLOW (); | |
1629 | while (old_sp < sp) | |
1630 | *++old_sp = SCM_UNDEFINED; | |
1631 | ||
1632 | NEXT; | |
1633 | } | |
1634 | ||
581f410f AW |
1635 | /* Like bind-optionals/shuffle, but if there are too many positional |
1636 | arguments, jumps to the next case-lambda clause. */ | |
1637 | VM_DEFINE_INSTRUCTION (94, bind_optionals_shuffle_or_br, "bind-optionals/shuffle-or-br", 9, -1, -1) | |
1638 | { | |
1639 | SCM *walk; | |
1640 | scm_t_ptrdiff nreq, nreq_and_opt, ntotal; | |
1641 | scm_t_int32 offset; | |
1642 | nreq = FETCH () << 8; | |
1643 | nreq += FETCH (); | |
1644 | nreq_and_opt = FETCH () << 8; | |
1645 | nreq_and_opt += FETCH (); | |
1646 | ntotal = FETCH () << 8; | |
1647 | ntotal += FETCH (); | |
1648 | FETCH_OFFSET (offset); | |
1649 | ||
1650 | /* look in optionals for first keyword or last positional */ | |
1651 | /* starting after the last required positional arg */ | |
1652 | walk = fp + nreq; | |
1653 | while (/* while we have args */ | |
1654 | walk <= sp | |
1655 | /* and we still have positionals to fill */ | |
1656 | && walk - fp < nreq_and_opt | |
1657 | /* and we haven't reached a keyword yet */ | |
1658 | && !scm_is_keyword (*walk)) | |
1659 | /* bind this optional arg (by leaving it in place) */ | |
1660 | walk++; | |
1661 | if (/* If we have filled all the positionals */ | |
1662 | walk - fp == nreq_and_opt | |
1663 | /* and there are still more arguments */ | |
1664 | && walk <= sp | |
1665 | /* and the next argument is not a keyword, */ | |
1666 | && !scm_is_keyword (*walk)) | |
1667 | { | |
1668 | /* Jump to the next case-lambda* clause. */ | |
1669 | ip += offset; | |
1670 | } | |
1671 | else | |
1672 | { | |
1673 | /* Otherwise, finish as in bind-optionals/shuffle: shuffle up, | |
1674 | from walk to ntotal */ | |
1675 | scm_t_ptrdiff nshuf = sp - walk + 1, i; | |
1676 | sp = (fp - 1) + ntotal + nshuf; | |
1677 | CHECK_OVERFLOW (); | |
1678 | for (i = 0; i < nshuf; i++) | |
1679 | sp[-i] = walk[nshuf-i-1]; | |
1680 | ||
1681 | /* and fill optionals & keyword args with SCM_UNDEFINED */ | |
1682 | while (walk <= (fp - 1) + ntotal) | |
1683 | *walk++ = SCM_UNDEFINED; | |
1684 | } | |
1685 | ||
1686 | NEXT; | |
1687 | } | |
1688 | ||
8d90b356 | 1689 | |
53e28ed9 AW |
1690 | /* |
1691 | (defun renumber-ops () | |
1692 | "start from top of buffer and renumber 'VM_DEFINE_FOO (\n' sequences" | |
1693 | (interactive "") | |
1694 | (save-excursion | |
1695 | (let ((counter -1)) (goto-char (point-min)) | |
1696 | (while (re-search-forward "^VM_DEFINE_[^ ]+ (\\([^,]+\\)," (point-max) t) | |
1697 | (replace-match | |
1698 | (number-to-string (setq counter (1+ counter))) | |
1699 | t t nil 1))))) | |
ff810079 | 1700 | (renumber-ops) |
53e28ed9 | 1701 | */ |
17e90c5e KN |
1702 | /* |
1703 | Local Variables: | |
1704 | c-file-style: "gnu" | |
1705 | End: | |
1706 | */ |