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Merge branch 'stable-2.0'
[bpt/guile.git] / libguile / vm-engine.c
1 /* Copyright (C) 2001, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
2 *
3 * This library is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU Lesser General Public License
5 * as published by the Free Software Foundation; either version 3 of
6 * the License, or (at your option) any later version.
7 *
8 * This library is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * Lesser General Public License for more details.
12 *
13 * You should have received a copy of the GNU Lesser General Public
14 * License along with this library; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
16 * 02110-1301 USA
17 */
18
19 /* This file is included in vm.c multiple times. */
20
21
22 #define UNPACK_8_8_8(op,a,b,c) \
23 do \
24 { \
25 a = (op >> 8) & 0xff; \
26 b = (op >> 16) & 0xff; \
27 c = op >> 24; \
28 } \
29 while (0)
30
31 #define UNPACK_8_16(op,a,b) \
32 do \
33 { \
34 a = (op >> 8) & 0xff; \
35 b = op >> 16; \
36 } \
37 while (0)
38
39 #define UNPACK_16_8(op,a,b) \
40 do \
41 { \
42 a = (op >> 8) & 0xffff; \
43 b = op >> 24; \
44 } \
45 while (0)
46
47 #define UNPACK_12_12(op,a,b) \
48 do \
49 { \
50 a = (op >> 8) & 0xfff; \
51 b = op >> 20; \
52 } \
53 while (0)
54
55 #define UNPACK_24(op,a) \
56 do \
57 { \
58 a = op >> 8; \
59 } \
60 while (0)
61
62
63 /* Assign some registers by hand. There used to be a bigger list here,
64 but it was never tested, and in the case of x86-32, was a source of
65 compilation failures. It can be revived if it's useful, but my naive
66 hope is that simply annotating the locals with "register" will be a
67 sufficient hint to the compiler. */
68 #ifdef __GNUC__
69 # if defined __x86_64__
70 /* GCC 4.6 chooses %rbp for IP_REG and %rbx for SP_REG, which works
71 well. Tell it to keep the jump table in a r12, which is
72 callee-saved. */
73 # define JT_REG asm ("r12")
74 # endif
75 #endif
76
77 #ifndef IP_REG
78 # define IP_REG
79 #endif
80 #ifndef FP_REG
81 # define FP_REG
82 #endif
83 #ifndef JT_REG
84 # define JT_REG
85 #endif
86
87 #define VM_ASSERT(condition, handler) \
88 do { \
89 if (SCM_UNLIKELY (!(condition))) \
90 { \
91 SYNC_IP(); \
92 handler; \
93 } \
94 } while (0)
95
96 #ifdef VM_ENABLE_ASSERTIONS
97 # define ASSERT(condition) VM_ASSERT (condition, abort())
98 #else
99 # define ASSERT(condition)
100 #endif
101
102 #if VM_USE_HOOKS
103 #define RUN_HOOK(exp) \
104 do { \
105 if (SCM_UNLIKELY (vp->trace_level > 0)) \
106 { \
107 SYNC_IP (); \
108 exp; \
109 CACHE_FP (); \
110 } \
111 } while (0)
112 #else
113 #define RUN_HOOK(exp)
114 #endif
115 #define RUN_HOOK0(h) RUN_HOOK (vm_dispatch_##h##_hook (vp))
116 #define RUN_HOOK1(h, arg) RUN_HOOK (vm_dispatch_##h##_hook (vp, arg))
117
118 #define APPLY_HOOK() \
119 RUN_HOOK0 (apply)
120 #define PUSH_CONTINUATION_HOOK() \
121 RUN_HOOK0 (push_continuation)
122 #define POP_CONTINUATION_HOOK(old_fp) \
123 RUN_HOOK1 (pop_continuation, old_fp)
124 #define NEXT_HOOK() \
125 RUN_HOOK0 (next)
126 #define ABORT_CONTINUATION_HOOK() \
127 RUN_HOOK0 (abort)
128
129 #define VM_HANDLE_INTERRUPTS \
130 SCM_ASYNC_TICK_WITH_GUARD_CODE (current_thread, SYNC_IP (), CACHE_FP ())
131
132
133 /* Virtual Machine
134
135 This is Guile's new virtual machine. When I say "new", I mean
136 relative to the current virtual machine. At some point it will
137 become "the" virtual machine, and we'll delete this paragraph. As
138 such, the rest of the comments speak as if there's only one VM.
139 In difference from the old VM, local 0 is the procedure, and the
140 first argument is local 1. At some point in the future we should
141 change the fp to point to the procedure and not to local 1.
142
143 <more overview here>
144 */
145
146
147 /* The VM has three state bits: the instruction pointer (IP), the frame
148 pointer (FP), and the top-of-stack pointer (SP). We cache the first
149 two of these in machine registers, local to the VM, because they are
150 used extensively by the VM. As the SP is used more by code outside
151 the VM than by the VM itself, we don't bother caching it locally.
152
153 Since the FP changes infrequently, relative to the IP, we keep vp->fp
154 in sync with the local FP. This would be a big lose for the IP,
155 though, so instead of updating vp->ip all the time, we call SYNC_IP
156 whenever we would need to know the IP of the top frame. In practice,
157 we need to SYNC_IP whenever we call out of the VM to a function that
158 would like to walk the stack, perhaps as the result of an
159 exception.
160
161 One more thing. We allow the stack to move, when it expands.
162 Therefore if you call out to a C procedure that could call Scheme
163 code, or otherwise push anything on the stack, you will need to
164 CACHE_FP afterwards to restore the possibly-changed FP. */
165
166 #define SYNC_IP() vp->ip = (ip)
167
168 #define CACHE_FP() fp = (vp->fp)
169 #define CACHE_REGISTER() \
170 do { \
171 ip = vp->ip; \
172 fp = vp->fp; \
173 } while (0)
174
175
176
177 /* After advancing vp->sp, but before writing any stack slots, check
178 that it is actually in bounds. If it is not in bounds, currently we
179 signal an error. In the future we may expand the stack instead,
180 possibly by moving it elsewhere, therefore no pointer into the stack
181 besides FP is valid across a CHECK_OVERFLOW call. Be careful! */
182 #define CHECK_OVERFLOW() \
183 do { \
184 if (SCM_UNLIKELY (vp->sp >= vp->stack_limit)) \
185 { \
186 SYNC_IP (); \
187 vm_expand_stack (vp); \
188 CACHE_FP (); \
189 } \
190 } while (0)
191
192 /* Reserve stack space for a frame. Will check that there is sufficient
193 stack space for N locals, including the procedure. Invoke after
194 preparing the new frame and setting the fp and ip. */
195 #define ALLOC_FRAME(n) \
196 do { \
197 vp->sp = LOCAL_ADDRESS (n - 1); \
198 CHECK_OVERFLOW (); \
199 } while (0)
200
201 /* Reset the current frame to hold N locals. Used when we know that no
202 stack expansion is needed. */
203 #define RESET_FRAME(n) \
204 do { \
205 vp->sp = LOCAL_ADDRESS (n - 1); \
206 } while (0)
207
208 /* Compute the number of locals in the frame. At a call, this is equal
209 to the number of actual arguments when a function is first called,
210 plus one for the function. */
211 #define FRAME_LOCALS_COUNT_FROM(slot) \
212 (vp->sp + 1 - LOCAL_ADDRESS (slot))
213 #define FRAME_LOCALS_COUNT() \
214 FRAME_LOCALS_COUNT_FROM (0)
215
216 /* Restore registers after returning from a frame. */
217 #define RESTORE_FRAME() \
218 do { \
219 } while (0)
220
221
222 #ifdef HAVE_LABELS_AS_VALUES
223 # define BEGIN_DISPATCH_SWITCH /* */
224 # define END_DISPATCH_SWITCH /* */
225 # define NEXT(n) \
226 do \
227 { \
228 ip += n; \
229 NEXT_HOOK (); \
230 op = *ip; \
231 goto *jump_table[op & 0xff]; \
232 } \
233 while (0)
234 # define VM_DEFINE_OP(opcode, tag, name, meta) \
235 op_##tag:
236 #else
237 # define BEGIN_DISPATCH_SWITCH \
238 vm_start: \
239 NEXT_HOOK (); \
240 op = *ip; \
241 switch (op & 0xff) \
242 {
243 # define END_DISPATCH_SWITCH \
244 }
245 # define NEXT(n) \
246 do \
247 { \
248 ip += n; \
249 goto vm_start; \
250 } \
251 while (0)
252 # define VM_DEFINE_OP(opcode, tag, name, meta) \
253 op_##tag: \
254 case opcode:
255 #endif
256
257 #define LOCAL_ADDRESS(i) (&SCM_FRAME_LOCAL (fp, i))
258 #define LOCAL_REF(i) SCM_FRAME_LOCAL (fp, i)
259 #define LOCAL_SET(i,o) SCM_FRAME_LOCAL (fp, i) = o
260
261 #define VARIABLE_REF(v) SCM_VARIABLE_REF (v)
262 #define VARIABLE_SET(v,o) SCM_VARIABLE_SET (v, o)
263 #define VARIABLE_BOUNDP(v) (!scm_is_eq (VARIABLE_REF (v), SCM_UNDEFINED))
264
265 #define RETURN_ONE_VALUE(ret) \
266 do { \
267 SCM val = ret; \
268 SCM *old_fp; \
269 VM_HANDLE_INTERRUPTS; \
270 old_fp = fp; \
271 ip = SCM_FRAME_RETURN_ADDRESS (fp); \
272 fp = vp->fp = SCM_FRAME_DYNAMIC_LINK (fp); \
273 /* Clear frame. */ \
274 old_fp[-1] = SCM_BOOL_F; \
275 old_fp[-2] = SCM_BOOL_F; \
276 /* Leave proc. */ \
277 SCM_FRAME_LOCAL (old_fp, 1) = val; \
278 vp->sp = &SCM_FRAME_LOCAL (old_fp, 1); \
279 POP_CONTINUATION_HOOK (old_fp); \
280 NEXT (0); \
281 } while (0)
282
283 /* While we could generate the list-unrolling code here, it's fine for
284 now to just tail-call (apply values vals). */
285 #define RETURN_VALUE_LIST(vals_) \
286 do { \
287 SCM vals = vals_; \
288 VM_HANDLE_INTERRUPTS; \
289 fp[0] = vm_builtin_apply; \
290 fp[1] = vm_builtin_values; \
291 fp[2] = vals; \
292 RESET_FRAME (3); \
293 ip = (scm_t_uint32 *) vm_builtin_apply_code; \
294 goto op_tail_apply; \
295 } while (0)
296
297 #define BR_NARGS(rel) \
298 scm_t_uint32 expected; \
299 UNPACK_24 (op, expected); \
300 if (FRAME_LOCALS_COUNT() rel expected) \
301 { \
302 scm_t_int32 offset = ip[1]; \
303 offset >>= 8; /* Sign-extending shift. */ \
304 NEXT (offset); \
305 } \
306 NEXT (2)
307
308 #define BR_UNARY(x, exp) \
309 scm_t_uint32 test; \
310 SCM x; \
311 UNPACK_24 (op, test); \
312 x = LOCAL_REF (test); \
313 if ((ip[1] & 0x1) ? !(exp) : (exp)) \
314 { \
315 scm_t_int32 offset = ip[1]; \
316 offset >>= 8; /* Sign-extending shift. */ \
317 if (offset < 0) \
318 VM_HANDLE_INTERRUPTS; \
319 NEXT (offset); \
320 } \
321 NEXT (2)
322
323 #define BR_BINARY(x, y, exp) \
324 scm_t_uint16 a, b; \
325 SCM x, y; \
326 UNPACK_12_12 (op, a, b); \
327 x = LOCAL_REF (a); \
328 y = LOCAL_REF (b); \
329 if ((ip[1] & 0x1) ? !(exp) : (exp)) \
330 { \
331 scm_t_int32 offset = ip[1]; \
332 offset >>= 8; /* Sign-extending shift. */ \
333 if (offset < 0) \
334 VM_HANDLE_INTERRUPTS; \
335 NEXT (offset); \
336 } \
337 NEXT (2)
338
339 #define BR_ARITHMETIC(crel,srel) \
340 { \
341 scm_t_uint16 a, b; \
342 SCM x, y; \
343 UNPACK_12_12 (op, a, b); \
344 x = LOCAL_REF (a); \
345 y = LOCAL_REF (b); \
346 if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) \
347 { \
348 scm_t_signed_bits x_bits = SCM_UNPACK (x); \
349 scm_t_signed_bits y_bits = SCM_UNPACK (y); \
350 if ((ip[1] & 0x1) ? !(x_bits crel y_bits) : (x_bits crel y_bits)) \
351 { \
352 scm_t_int32 offset = ip[1]; \
353 offset >>= 8; /* Sign-extending shift. */ \
354 if (offset < 0) \
355 VM_HANDLE_INTERRUPTS; \
356 NEXT (offset); \
357 } \
358 NEXT (2); \
359 } \
360 else \
361 { \
362 SCM res; \
363 SYNC_IP (); \
364 res = srel (x, y); \
365 CACHE_FP (); \
366 if ((ip[1] & 0x1) ? scm_is_false (res) : scm_is_true (res)) \
367 { \
368 scm_t_int32 offset = ip[1]; \
369 offset >>= 8; /* Sign-extending shift. */ \
370 if (offset < 0) \
371 VM_HANDLE_INTERRUPTS; \
372 NEXT (offset); \
373 } \
374 NEXT (2); \
375 } \
376 }
377
378 #define ARGS1(a1) \
379 scm_t_uint16 dst, src; \
380 SCM a1; \
381 UNPACK_12_12 (op, dst, src); \
382 a1 = LOCAL_REF (src)
383 #define ARGS2(a1, a2) \
384 scm_t_uint8 dst, src1, src2; \
385 SCM a1, a2; \
386 UNPACK_8_8_8 (op, dst, src1, src2); \
387 a1 = LOCAL_REF (src1); \
388 a2 = LOCAL_REF (src2)
389 #define RETURN(x) \
390 do { LOCAL_SET (dst, x); NEXT (1); } while (0)
391 #define RETURN_EXP(exp) \
392 do { SCM __x; SYNC_IP (); __x = exp; CACHE_FP (); RETURN (__x); } while (0)
393
394 /* The maximum/minimum tagged integers. */
395 #define INUM_MAX \
396 ((scm_t_signed_bits) SCM_UNPACK (SCM_I_MAKINUM (SCM_MOST_POSITIVE_FIXNUM)))
397 #define INUM_MIN \
398 ((scm_t_signed_bits) SCM_UNPACK (SCM_I_MAKINUM (SCM_MOST_NEGATIVE_FIXNUM)))
399 #define INUM_STEP \
400 ((scm_t_signed_bits) SCM_UNPACK (SCM_INUM1) \
401 - (scm_t_signed_bits) SCM_UNPACK (SCM_INUM0))
402
403 #define BINARY_INTEGER_OP(CFUNC,SFUNC) \
404 { \
405 ARGS2 (x, y); \
406 if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) \
407 { \
408 scm_t_int64 n = SCM_I_INUM (x) CFUNC SCM_I_INUM (y); \
409 if (SCM_FIXABLE (n)) \
410 RETURN (SCM_I_MAKINUM (n)); \
411 } \
412 RETURN_EXP (SFUNC (x, y)); \
413 }
414
415 #define VM_VALIDATE_PAIR(x, proc) \
416 VM_ASSERT (scm_is_pair (x), vm_error_not_a_pair (proc, x))
417
418 #define VM_VALIDATE_STRUCT(obj, proc) \
419 VM_ASSERT (SCM_STRUCTP (obj), vm_error_not_a_pair (proc, obj))
420
421 #define VM_VALIDATE_BYTEVECTOR(x, proc) \
422 VM_ASSERT (SCM_BYTEVECTOR_P (x), vm_error_not_a_bytevector (proc, x))
423
424 /* Return true (non-zero) if PTR has suitable alignment for TYPE. */
425 #define ALIGNED_P(ptr, type) \
426 ((scm_t_uintptr) (ptr) % alignof_type (type) == 0)
427
428 static SCM
429 VM_NAME (scm_i_thread *current_thread, struct scm_vm *vp,
430 scm_i_jmp_buf *registers, int resume)
431 {
432 /* Instruction pointer: A pointer to the opcode that is currently
433 running. */
434 register scm_t_uint32 *ip IP_REG;
435
436 /* Frame pointer: A pointer into the stack, off of which we index
437 arguments and local variables. Pushed at function calls, popped on
438 returns. */
439 register SCM *fp FP_REG;
440
441 /* Current opcode: A cache of *ip. */
442 register scm_t_uint32 op;
443
444 #ifdef HAVE_LABELS_AS_VALUES
445 static const void *jump_table_[256] = {
446 #define LABEL_ADDR(opcode, tag, name, meta) &&op_##tag,
447 FOR_EACH_VM_OPERATION(LABEL_ADDR)
448 #undef LABEL_ADDR
449 };
450 register const void **jump_table JT_REG;
451 /* Attempt to keep JUMP_TABLE_POINTER in a register. This saves one
452 load instruction at each instruction dispatch. */
453 jump_table = jump_table_;
454 #endif
455
456 /* Load VM registers. */
457 CACHE_REGISTER ();
458
459 VM_HANDLE_INTERRUPTS;
460
461 /* Usually a call to the VM happens on application, with the boot
462 continuation on the next frame. Sometimes it happens after a
463 non-local exit however; in that case the VM state is all set up,
464 and we have but to jump to the next opcode. */
465 if (SCM_UNLIKELY (resume))
466 NEXT (0);
467
468 apply:
469 while (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp)))
470 {
471 SCM proc = SCM_FRAME_PROGRAM (fp);
472
473 if (SCM_STRUCTP (proc) && SCM_STRUCT_APPLICABLE_P (proc))
474 {
475 LOCAL_SET (0, SCM_STRUCT_PROCEDURE (proc));
476 continue;
477 }
478 if (SCM_HAS_TYP7 (proc, scm_tc7_smob) && SCM_SMOB_APPLICABLE_P (proc))
479 {
480 scm_t_uint32 n = FRAME_LOCALS_COUNT();
481
482 /* Shuffle args up. */
483 RESET_FRAME (n + 1);
484 while (n--)
485 LOCAL_SET (n + 1, LOCAL_REF (n));
486
487 LOCAL_SET (0, SCM_SMOB_DESCRIPTOR (proc).apply_trampoline);
488 continue;
489 }
490
491 SYNC_IP();
492 vm_error_wrong_type_apply (proc);
493 }
494
495 /* Let's go! */
496 ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp));
497 NEXT (0);
498
499 BEGIN_DISPATCH_SWITCH;
500
501
502 \f
503
504 /*
505 * Call and return
506 */
507
508 /* halt _:24
509 *
510 * Bring the VM to a halt, returning all the values from the stack.
511 */
512 VM_DEFINE_OP (0, halt, "halt", OP1 (U8_X24))
513 {
514 /* Boot closure in r0, empty frame in r1/r2, proc in r3, values from r4. */
515
516 scm_t_uint32 nvals = FRAME_LOCALS_COUNT_FROM (4);
517 SCM ret;
518
519 if (nvals == 1)
520 ret = LOCAL_REF (4);
521 else
522 {
523 scm_t_uint32 n;
524 ret = SCM_EOL;
525 for (n = nvals; n > 0; n--)
526 ret = scm_cons (LOCAL_REF (4 + n - 1), ret);
527 ret = scm_values (ret);
528 }
529
530 vp->ip = SCM_FRAME_RETURN_ADDRESS (fp);
531 vp->sp = SCM_FRAME_PREVIOUS_SP (fp);
532 vp->fp = SCM_FRAME_DYNAMIC_LINK (fp);
533
534 return ret;
535 }
536
537 /* call proc:24 _:8 nlocals:24
538 *
539 * Call a procedure. PROC is the local corresponding to a procedure.
540 * The two values below PROC will be overwritten by the saved call
541 * frame data. The new frame will have space for NLOCALS locals: one
542 * for the procedure, and the rest for the arguments which should
543 * already have been pushed on.
544 *
545 * When the call returns, execution proceeds with the next
546 * instruction. There may be any number of values on the return
547 * stack; the precise number can be had by subtracting the address of
548 * PROC from the post-call SP.
549 */
550 VM_DEFINE_OP (1, call, "call", OP2 (U8_U24, X8_U24))
551 {
552 scm_t_uint32 proc, nlocals;
553 SCM *old_fp;
554
555 UNPACK_24 (op, proc);
556 UNPACK_24 (ip[1], nlocals);
557
558 VM_HANDLE_INTERRUPTS;
559
560 old_fp = fp;
561 fp = vp->fp = old_fp + proc;
562 SCM_FRAME_SET_DYNAMIC_LINK (fp, old_fp);
563 SCM_FRAME_SET_RETURN_ADDRESS (fp, ip + 2);
564
565 RESET_FRAME (nlocals);
566
567 PUSH_CONTINUATION_HOOK ();
568 APPLY_HOOK ();
569
570 if (SCM_UNLIKELY (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp))))
571 goto apply;
572
573 ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp));
574 NEXT (0);
575 }
576
577 /* tail-call nlocals:24
578 *
579 * Tail-call a procedure. Requires that the procedure and all of the
580 * arguments have already been shuffled into position. Will reset the
581 * frame to NLOCALS.
582 */
583 VM_DEFINE_OP (2, tail_call, "tail-call", OP1 (U8_U24))
584 {
585 scm_t_uint32 nlocals;
586
587 UNPACK_24 (op, nlocals);
588
589 VM_HANDLE_INTERRUPTS;
590
591 RESET_FRAME (nlocals);
592
593 APPLY_HOOK ();
594
595 if (SCM_UNLIKELY (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp))))
596 goto apply;
597
598 ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp));
599 NEXT (0);
600 }
601
602 /* tail-call/shuffle from:24
603 *
604 * Tail-call a procedure. The procedure should already be set to slot
605 * 0. The rest of the args are taken from the frame, starting at
606 * FROM, shuffled down to start at slot 0. This is part of the
607 * implementation of the call-with-values builtin.
608 */
609 VM_DEFINE_OP (3, tail_call_shuffle, "tail-call/shuffle", OP1 (U8_U24))
610 {
611 scm_t_uint32 n, from, nlocals;
612
613 UNPACK_24 (op, from);
614
615 VM_HANDLE_INTERRUPTS;
616
617 VM_ASSERT (from > 0, abort ());
618 nlocals = FRAME_LOCALS_COUNT ();
619
620 for (n = 0; from + n < nlocals; n++)
621 LOCAL_SET (n + 1, LOCAL_REF (from + n));
622
623 RESET_FRAME (n + 1);
624
625 APPLY_HOOK ();
626
627 if (SCM_UNLIKELY (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp))))
628 goto apply;
629
630 ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp));
631 NEXT (0);
632 }
633
634 /* receive dst:12 proc:12 _:8 nlocals:24
635 *
636 * Receive a single return value from a call whose procedure was in
637 * PROC, asserting that the call actually returned at least one
638 * value. Afterwards, resets the frame to NLOCALS locals.
639 */
640 VM_DEFINE_OP (4, receive, "receive", OP2 (U8_U12_U12, X8_U24) | OP_DST)
641 {
642 scm_t_uint16 dst, proc;
643 scm_t_uint32 nlocals;
644 UNPACK_12_12 (op, dst, proc);
645 UNPACK_24 (ip[1], nlocals);
646 VM_ASSERT (FRAME_LOCALS_COUNT () > proc + 1, vm_error_no_values ());
647 LOCAL_SET (dst, LOCAL_REF (proc + 1));
648 RESET_FRAME (nlocals);
649 NEXT (2);
650 }
651
652 /* receive-values proc:24 allow-extra?:1 _:7 nvalues:24
653 *
654 * Receive a return of multiple values from a call whose procedure was
655 * in PROC. If fewer than NVALUES values were returned, signal an
656 * error. Unless ALLOW-EXTRA? is true, require that the number of
657 * return values equals NVALUES exactly. After receive-values has
658 * run, the values can be copied down via `mov'.
659 */
660 VM_DEFINE_OP (5, receive_values, "receive-values", OP2 (U8_U24, B1_X7_U24))
661 {
662 scm_t_uint32 proc, nvalues;
663 UNPACK_24 (op, proc);
664 UNPACK_24 (ip[1], nvalues);
665 if (ip[1] & 0x1)
666 VM_ASSERT (FRAME_LOCALS_COUNT () > proc + nvalues,
667 vm_error_not_enough_values ());
668 else
669 VM_ASSERT (FRAME_LOCALS_COUNT () == proc + 1 + nvalues,
670 vm_error_wrong_number_of_values (nvalues));
671 NEXT (2);
672 }
673
674 /* return src:24
675 *
676 * Return a value.
677 */
678 VM_DEFINE_OP (6, return, "return", OP1 (U8_U24))
679 {
680 scm_t_uint32 src;
681 UNPACK_24 (op, src);
682 RETURN_ONE_VALUE (LOCAL_REF (src));
683 }
684
685 /* return-values _:24
686 *
687 * Return a number of values from a call frame. This opcode
688 * corresponds to an application of `values' in tail position. As
689 * with tail calls, we expect that the values have already been
690 * shuffled down to a contiguous array starting at slot 1.
691 * We also expect the frame has already been reset.
692 */
693 VM_DEFINE_OP (7, return_values, "return-values", OP1 (U8_X24))
694 {
695 SCM *old_fp;
696
697 VM_HANDLE_INTERRUPTS;
698
699 old_fp = fp;
700 ip = SCM_FRAME_RETURN_ADDRESS (fp);
701 fp = vp->fp = SCM_FRAME_DYNAMIC_LINK (fp);
702
703 /* Clear stack frame. */
704 old_fp[-1] = SCM_BOOL_F;
705 old_fp[-2] = SCM_BOOL_F;
706
707 POP_CONTINUATION_HOOK (old_fp);
708
709 NEXT (0);
710 }
711
712
713 \f
714
715 /*
716 * Specialized call stubs
717 */
718
719 /* subr-call ptr-idx:24
720 *
721 * Call a subr, passing all locals in this frame as arguments. Fetch
722 * the foreign pointer from PTR-IDX, a free variable. Return from the
723 * calling frame. This instruction is part of the trampolines
724 * created in gsubr.c, and is not generated by the compiler.
725 */
726 VM_DEFINE_OP (8, subr_call, "subr-call", OP1 (U8_U24))
727 {
728 scm_t_uint32 ptr_idx;
729 SCM pointer, ret;
730 SCM (*subr)();
731
732 UNPACK_24 (op, ptr_idx);
733
734 pointer = SCM_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (0), ptr_idx);
735 subr = SCM_POINTER_VALUE (pointer);
736
737 VM_HANDLE_INTERRUPTS;
738 SYNC_IP ();
739
740 switch (FRAME_LOCALS_COUNT_FROM (1))
741 {
742 case 0:
743 ret = subr ();
744 break;
745 case 1:
746 ret = subr (fp[1]);
747 break;
748 case 2:
749 ret = subr (fp[1], fp[2]);
750 break;
751 case 3:
752 ret = subr (fp[1], fp[2], fp[3]);
753 break;
754 case 4:
755 ret = subr (fp[1], fp[2], fp[3], fp[4]);
756 break;
757 case 5:
758 ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5]);
759 break;
760 case 6:
761 ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5], fp[6]);
762 break;
763 case 7:
764 ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5], fp[6], fp[7]);
765 break;
766 case 8:
767 ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5], fp[6], fp[7], fp[8]);
768 break;
769 case 9:
770 ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5], fp[6], fp[7], fp[8], fp[9]);
771 break;
772 case 10:
773 ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5], fp[6], fp[7], fp[8], fp[9], fp[10]);
774 break;
775 default:
776 abort ();
777 }
778
779 CACHE_FP ();
780
781 if (SCM_UNLIKELY (SCM_VALUESP (ret)))
782 /* multiple values returned to continuation */
783 RETURN_VALUE_LIST (scm_struct_ref (ret, SCM_INUM0));
784 else
785 RETURN_ONE_VALUE (ret);
786 }
787
788 /* foreign-call cif-idx:12 ptr-idx:12
789 *
790 * Call a foreign function. Fetch the CIF and foreign pointer from
791 * CIF-IDX and PTR-IDX, both free variables. Return from the calling
792 * frame. Arguments are taken from the stack. This instruction is
793 * part of the trampolines created by the FFI, and is not generated by
794 * the compiler.
795 */
796 VM_DEFINE_OP (9, foreign_call, "foreign-call", OP1 (U8_U12_U12))
797 {
798 scm_t_uint16 cif_idx, ptr_idx;
799 SCM closure, cif, pointer, ret;
800
801 UNPACK_12_12 (op, cif_idx, ptr_idx);
802
803 closure = LOCAL_REF (0);
804 cif = SCM_PROGRAM_FREE_VARIABLE_REF (closure, cif_idx);
805 pointer = SCM_PROGRAM_FREE_VARIABLE_REF (closure, ptr_idx);
806
807 SYNC_IP ();
808 VM_HANDLE_INTERRUPTS;
809
810 // FIXME: separate args
811 ret = scm_i_foreign_call (scm_cons (cif, pointer), LOCAL_ADDRESS (1));
812
813 CACHE_FP ();
814
815 if (SCM_UNLIKELY (SCM_VALUESP (ret)))
816 /* multiple values returned to continuation */
817 RETURN_VALUE_LIST (scm_struct_ref (ret, SCM_INUM0));
818 else
819 RETURN_ONE_VALUE (ret);
820 }
821
822 /* continuation-call contregs:24
823 *
824 * Return to a continuation, nonlocally. The arguments to the
825 * continuation are taken from the stack. CONTREGS is a free variable
826 * containing the reified continuation. This instruction is part of
827 * the implementation of undelimited continuations, and is not
828 * generated by the compiler.
829 */
830 VM_DEFINE_OP (10, continuation_call, "continuation-call", OP1 (U8_U24))
831 {
832 SCM contregs;
833 scm_t_uint32 contregs_idx;
834
835 UNPACK_24 (op, contregs_idx);
836
837 contregs =
838 SCM_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (0), contregs_idx);
839
840 SYNC_IP ();
841 scm_i_check_continuation (contregs);
842 vm_return_to_continuation (scm_i_contregs_vp (contregs),
843 scm_i_contregs_vm_cont (contregs),
844 FRAME_LOCALS_COUNT_FROM (1),
845 LOCAL_ADDRESS (1));
846 scm_i_reinstate_continuation (contregs);
847
848 /* no NEXT */
849 abort ();
850 }
851
852 /* compose-continuation cont:24
853 *
854 * Compose a partial continution with the current continuation. The
855 * arguments to the continuation are taken from the stack. CONT is a
856 * free variable containing the reified continuation. This
857 * instruction is part of the implementation of partial continuations,
858 * and is not generated by the compiler.
859 */
860 VM_DEFINE_OP (11, compose_continuation, "compose-continuation", OP1 (U8_U24))
861 {
862 SCM vmcont;
863 scm_t_uint32 cont_idx;
864
865 UNPACK_24 (op, cont_idx);
866 vmcont = SCM_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (0), cont_idx);
867
868 SYNC_IP ();
869 VM_ASSERT (SCM_VM_CONT_REWINDABLE_P (vmcont),
870 vm_error_continuation_not_rewindable (vmcont));
871 vm_reinstate_partial_continuation (vp, vmcont, FRAME_LOCALS_COUNT_FROM (1),
872 LOCAL_ADDRESS (1),
873 &current_thread->dynstack,
874 registers);
875 CACHE_REGISTER ();
876 NEXT (0);
877 }
878
879 /* tail-apply _:24
880 *
881 * Tail-apply the procedure in local slot 0 to the rest of the
882 * arguments. This instruction is part of the implementation of
883 * `apply', and is not generated by the compiler.
884 */
885 VM_DEFINE_OP (12, tail_apply, "tail-apply", OP1 (U8_X24))
886 {
887 int i, list_idx, list_len, nlocals;
888 SCM list;
889
890 VM_HANDLE_INTERRUPTS;
891
892 nlocals = FRAME_LOCALS_COUNT ();
893 // At a minimum, there should be apply, f, and the list.
894 VM_ASSERT (nlocals >= 3, abort ());
895 list_idx = nlocals - 1;
896 list = LOCAL_REF (list_idx);
897 list_len = scm_ilength (list);
898
899 VM_ASSERT (list_len >= 0, vm_error_apply_to_non_list (list));
900
901 nlocals = nlocals - 2 + list_len;
902 ALLOC_FRAME (nlocals);
903
904 for (i = 1; i < list_idx; i++)
905 LOCAL_SET (i - 1, LOCAL_REF (i));
906
907 /* Null out these slots, just in case there are less than 2 elements
908 in the list. */
909 LOCAL_SET (list_idx - 1, SCM_UNDEFINED);
910 LOCAL_SET (list_idx, SCM_UNDEFINED);
911
912 for (i = 0; i < list_len; i++, list = SCM_CDR (list))
913 LOCAL_SET (list_idx - 1 + i, SCM_CAR (list));
914
915 APPLY_HOOK ();
916
917 if (SCM_UNLIKELY (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp))))
918 goto apply;
919
920 ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp));
921 NEXT (0);
922 }
923
924 /* call/cc _:24
925 *
926 * Capture the current continuation, and tail-apply the procedure in
927 * local slot 1 to it. This instruction is part of the implementation
928 * of `call/cc', and is not generated by the compiler.
929 */
930 VM_DEFINE_OP (13, call_cc, "call/cc", OP1 (U8_X24))
931 {
932 SCM vm_cont, cont;
933 scm_t_dynstack *dynstack;
934 int first;
935
936 VM_HANDLE_INTERRUPTS;
937
938 SYNC_IP ();
939 dynstack = scm_dynstack_capture_all (&current_thread->dynstack);
940 vm_cont = scm_i_vm_capture_stack (vp->stack_base,
941 SCM_FRAME_DYNAMIC_LINK (fp),
942 SCM_FRAME_PREVIOUS_SP (fp),
943 SCM_FRAME_RETURN_ADDRESS (fp),
944 dynstack,
945 0);
946 /* FIXME: Seems silly to capture the registers here, when they are
947 already captured in the registers local, which here we are
948 copying out to the heap; and likewise, the setjmp(&registers)
949 code already has the non-local return handler. But oh
950 well! */
951 cont = scm_i_make_continuation (&first, vp, vm_cont);
952
953 if (first)
954 {
955 LOCAL_SET (0, LOCAL_REF (1));
956 LOCAL_SET (1, cont);
957 RESET_FRAME (2);
958
959 APPLY_HOOK ();
960
961 if (SCM_UNLIKELY (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp))))
962 goto apply;
963
964 ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp));
965 NEXT (0);
966 }
967 else
968 {
969 CACHE_REGISTER ();
970 ABORT_CONTINUATION_HOOK ();
971 NEXT (0);
972 }
973 }
974
975 /* abort _:24
976 *
977 * Abort to a prompt handler. The tag is expected in r1, and the rest
978 * of the values in the frame are returned to the prompt handler.
979 * This corresponds to a tail application of abort-to-prompt.
980 */
981 VM_DEFINE_OP (14, abort, "abort", OP1 (U8_X24))
982 {
983 scm_t_uint32 nlocals = FRAME_LOCALS_COUNT ();
984
985 ASSERT (nlocals >= 2);
986 /* FIXME: Really we should capture the caller's registers. Until
987 then, manually advance the IP so that when the prompt resumes,
988 it continues with the next instruction. */
989 ip++;
990 SYNC_IP ();
991 vm_abort (vp, LOCAL_REF (1), nlocals - 2, LOCAL_ADDRESS (2),
992 SCM_EOL, LOCAL_ADDRESS (0), registers);
993
994 /* vm_abort should not return */
995 abort ();
996 }
997
998 /* builtin-ref dst:12 idx:12
999 *
1000 * Load a builtin stub by index into DST.
1001 */
1002 VM_DEFINE_OP (15, builtin_ref, "builtin-ref", OP1 (U8_U12_U12) | OP_DST)
1003 {
1004 scm_t_uint16 dst, idx;
1005
1006 UNPACK_12_12 (op, dst, idx);
1007 LOCAL_SET (dst, scm_vm_builtin_ref (idx));
1008
1009 NEXT (1);
1010 }
1011
1012
1013 \f
1014
1015 /*
1016 * Function prologues
1017 */
1018
1019 /* br-if-nargs-ne expected:24 _:8 offset:24
1020 * br-if-nargs-lt expected:24 _:8 offset:24
1021 * br-if-nargs-gt expected:24 _:8 offset:24
1022 *
1023 * If the number of actual arguments is not equal, less than, or greater
1024 * than EXPECTED, respectively, add OFFSET, a signed 24-bit number, to
1025 * the current instruction pointer.
1026 */
1027 VM_DEFINE_OP (16, br_if_nargs_ne, "br-if-nargs-ne", OP2 (U8_U24, X8_L24))
1028 {
1029 BR_NARGS (!=);
1030 }
1031 VM_DEFINE_OP (17, br_if_nargs_lt, "br-if-nargs-lt", OP2 (U8_U24, X8_L24))
1032 {
1033 BR_NARGS (<);
1034 }
1035 VM_DEFINE_OP (18, br_if_nargs_gt, "br-if-nargs-gt", OP2 (U8_U24, X8_L24))
1036 {
1037 BR_NARGS (>);
1038 }
1039
1040 /* assert-nargs-ee expected:24
1041 * assert-nargs-ge expected:24
1042 * assert-nargs-le expected:24
1043 *
1044 * If the number of actual arguments is not ==, >=, or <= EXPECTED,
1045 * respectively, signal an error.
1046 */
1047 VM_DEFINE_OP (19, assert_nargs_ee, "assert-nargs-ee", OP1 (U8_U24))
1048 {
1049 scm_t_uint32 expected;
1050 UNPACK_24 (op, expected);
1051 VM_ASSERT (FRAME_LOCALS_COUNT () == expected,
1052 vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp)));
1053 NEXT (1);
1054 }
1055 VM_DEFINE_OP (20, assert_nargs_ge, "assert-nargs-ge", OP1 (U8_U24))
1056 {
1057 scm_t_uint32 expected;
1058 UNPACK_24 (op, expected);
1059 VM_ASSERT (FRAME_LOCALS_COUNT () >= expected,
1060 vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp)));
1061 NEXT (1);
1062 }
1063 VM_DEFINE_OP (21, assert_nargs_le, "assert-nargs-le", OP1 (U8_U24))
1064 {
1065 scm_t_uint32 expected;
1066 UNPACK_24 (op, expected);
1067 VM_ASSERT (FRAME_LOCALS_COUNT () <= expected,
1068 vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp)));
1069 NEXT (1);
1070 }
1071
1072 /* alloc-frame nlocals:24
1073 *
1074 * Ensure that there is space on the stack for NLOCALS local variables,
1075 * setting them all to SCM_UNDEFINED, except those nargs values that
1076 * were passed as arguments and procedure.
1077 */
1078 VM_DEFINE_OP (22, alloc_frame, "alloc-frame", OP1 (U8_U24))
1079 {
1080 scm_t_uint32 nlocals, nargs;
1081 UNPACK_24 (op, nlocals);
1082
1083 nargs = FRAME_LOCALS_COUNT ();
1084 ALLOC_FRAME (nlocals);
1085 while (nlocals-- > nargs)
1086 LOCAL_SET (nlocals, SCM_UNDEFINED);
1087
1088 NEXT (1);
1089 }
1090
1091 /* reset-frame nlocals:24
1092 *
1093 * Like alloc-frame, but doesn't check that the stack is big enough.
1094 * Used to reset the frame size to something less than the size that
1095 * was previously set via alloc-frame.
1096 */
1097 VM_DEFINE_OP (23, reset_frame, "reset-frame", OP1 (U8_U24))
1098 {
1099 scm_t_uint32 nlocals;
1100 UNPACK_24 (op, nlocals);
1101 RESET_FRAME (nlocals);
1102 NEXT (1);
1103 }
1104
1105 /* assert-nargs-ee/locals expected:12 nlocals:12
1106 *
1107 * Equivalent to a sequence of assert-nargs-ee and reserve-locals. The
1108 * number of locals reserved is EXPECTED + NLOCALS.
1109 */
1110 VM_DEFINE_OP (24, assert_nargs_ee_locals, "assert-nargs-ee/locals", OP1 (U8_U12_U12))
1111 {
1112 scm_t_uint16 expected, nlocals;
1113 UNPACK_12_12 (op, expected, nlocals);
1114 VM_ASSERT (FRAME_LOCALS_COUNT () == expected,
1115 vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp)));
1116 ALLOC_FRAME (expected + nlocals);
1117 while (nlocals--)
1118 LOCAL_SET (expected + nlocals, SCM_UNDEFINED);
1119
1120 NEXT (1);
1121 }
1122
1123 /* br-if-npos-gt nreq:24 _:8 npos:24 _:8 offset:24
1124 *
1125 * Find the first positional argument after NREQ. If it is greater
1126 * than NPOS, jump to OFFSET.
1127 *
1128 * This instruction is only emitted for functions with multiple
1129 * clauses, and an earlier clause has keywords and no rest arguments.
1130 * See "Case-lambda" in the manual, for more on how case-lambda
1131 * chooses the clause to apply.
1132 */
1133 VM_DEFINE_OP (25, br_if_npos_gt, "br-if-npos-gt", OP3 (U8_U24, X8_U24, X8_L24))
1134 {
1135 scm_t_uint32 nreq, npos;
1136
1137 UNPACK_24 (op, nreq);
1138 UNPACK_24 (ip[1], npos);
1139
1140 /* We can only have too many positionals if there are more
1141 arguments than NPOS. */
1142 if (FRAME_LOCALS_COUNT() > npos)
1143 {
1144 scm_t_uint32 n;
1145 for (n = nreq; n < npos; n++)
1146 if (scm_is_keyword (LOCAL_REF (n)))
1147 break;
1148 if (n == npos && !scm_is_keyword (LOCAL_REF (n)))
1149 {
1150 scm_t_int32 offset = ip[2];
1151 offset >>= 8; /* Sign-extending shift. */
1152 NEXT (offset);
1153 }
1154 }
1155 NEXT (3);
1156 }
1157
1158 /* bind-kwargs nreq:24 flags:8 nreq-and-opt:24 _:8 ntotal:24 kw-offset:32
1159 *
1160 * flags := allow-other-keys:1 has-rest:1 _:6
1161 *
1162 * Find the last positional argument, and shuffle all the rest above
1163 * NTOTAL. Initialize the intervening locals to SCM_UNDEFINED. Then
1164 * load the constant at KW-OFFSET words from the current IP, and use it
1165 * to bind keyword arguments. If HAS-REST, collect all shuffled
1166 * arguments into a list, and store it in NREQ-AND-OPT. Finally, clear
1167 * the arguments that we shuffled up.
1168 *
1169 * A macro-mega-instruction.
1170 */
1171 VM_DEFINE_OP (26, bind_kwargs, "bind-kwargs", OP4 (U8_U24, U8_U24, X8_U24, N32))
1172 {
1173 scm_t_uint32 nreq, nreq_and_opt, ntotal, npositional, nkw, n, nargs;
1174 scm_t_int32 kw_offset;
1175 scm_t_bits kw_bits;
1176 SCM kw;
1177 char allow_other_keys, has_rest;
1178
1179 UNPACK_24 (op, nreq);
1180 allow_other_keys = ip[1] & 0x1;
1181 has_rest = ip[1] & 0x2;
1182 UNPACK_24 (ip[1], nreq_and_opt);
1183 UNPACK_24 (ip[2], ntotal);
1184 kw_offset = ip[3];
1185 kw_bits = (scm_t_bits) (ip + kw_offset);
1186 VM_ASSERT (!(kw_bits & 0x7), abort());
1187 kw = SCM_PACK (kw_bits);
1188
1189 nargs = FRAME_LOCALS_COUNT ();
1190
1191 /* look in optionals for first keyword or last positional */
1192 /* starting after the last required positional arg */
1193 npositional = nreq;
1194 while (/* while we have args */
1195 npositional < nargs
1196 /* and we still have positionals to fill */
1197 && npositional < nreq_and_opt
1198 /* and we haven't reached a keyword yet */
1199 && !scm_is_keyword (LOCAL_REF (npositional)))
1200 /* bind this optional arg (by leaving it in place) */
1201 npositional++;
1202 nkw = nargs - npositional;
1203 /* shuffle non-positional arguments above ntotal */
1204 ALLOC_FRAME (ntotal + nkw);
1205 n = nkw;
1206 while (n--)
1207 LOCAL_SET (ntotal + n, LOCAL_REF (npositional + n));
1208 /* and fill optionals & keyword args with SCM_UNDEFINED */
1209 n = npositional;
1210 while (n < ntotal)
1211 LOCAL_SET (n++, SCM_UNDEFINED);
1212
1213 VM_ASSERT (has_rest || (nkw % 2) == 0,
1214 vm_error_kwargs_length_not_even (SCM_FRAME_PROGRAM (fp)));
1215
1216 /* Now bind keywords, in the order given. */
1217 for (n = 0; n < nkw; n++)
1218 if (scm_is_keyword (LOCAL_REF (ntotal + n)))
1219 {
1220 SCM walk;
1221 for (walk = kw; scm_is_pair (walk); walk = SCM_CDR (walk))
1222 if (scm_is_eq (SCM_CAAR (walk), LOCAL_REF (ntotal + n)))
1223 {
1224 SCM si = SCM_CDAR (walk);
1225 LOCAL_SET (SCM_I_INUMP (si) ? SCM_I_INUM (si) : scm_to_uint32 (si),
1226 LOCAL_REF (ntotal + n + 1));
1227 break;
1228 }
1229 VM_ASSERT (scm_is_pair (walk) || allow_other_keys,
1230 vm_error_kwargs_unrecognized_keyword (SCM_FRAME_PROGRAM (fp),
1231 LOCAL_REF (ntotal + n)));
1232 n++;
1233 }
1234 else
1235 VM_ASSERT (has_rest, vm_error_kwargs_invalid_keyword (SCM_FRAME_PROGRAM (fp),
1236 LOCAL_REF (ntotal + n)));
1237
1238 if (has_rest)
1239 {
1240 SCM rest = SCM_EOL;
1241 n = nkw;
1242 while (n--)
1243 rest = scm_cons (LOCAL_REF (ntotal + n), rest);
1244 LOCAL_SET (nreq_and_opt, rest);
1245 }
1246
1247 RESET_FRAME (ntotal);
1248
1249 NEXT (4);
1250 }
1251
1252 /* bind-rest dst:24
1253 *
1254 * Collect any arguments at or above DST into a list, and store that
1255 * list at DST.
1256 */
1257 VM_DEFINE_OP (27, bind_rest, "bind-rest", OP1 (U8_U24) | OP_DST)
1258 {
1259 scm_t_uint32 dst, nargs;
1260 SCM rest = SCM_EOL;
1261
1262 UNPACK_24 (op, dst);
1263 nargs = FRAME_LOCALS_COUNT ();
1264
1265 if (nargs <= dst)
1266 {
1267 ALLOC_FRAME (dst + 1);
1268 while (nargs < dst)
1269 LOCAL_SET (nargs++, SCM_UNDEFINED);
1270 }
1271 else
1272 {
1273 while (nargs-- > dst)
1274 {
1275 rest = scm_cons (LOCAL_REF (nargs), rest);
1276 LOCAL_SET (nargs, SCM_UNDEFINED);
1277 }
1278
1279 RESET_FRAME (dst + 1);
1280 }
1281
1282 LOCAL_SET (dst, rest);
1283
1284 NEXT (1);
1285 }
1286
1287
1288 \f
1289
1290 /*
1291 * Branching instructions
1292 */
1293
1294 /* br offset:24
1295 *
1296 * Add OFFSET, a signed 24-bit number, to the current instruction
1297 * pointer.
1298 */
1299 VM_DEFINE_OP (28, br, "br", OP1 (U8_L24))
1300 {
1301 scm_t_int32 offset = op;
1302 offset >>= 8; /* Sign-extending shift. */
1303 NEXT (offset);
1304 }
1305
1306 /* br-if-true test:24 invert:1 _:7 offset:24
1307 *
1308 * If the value in TEST is true for the purposes of Scheme, add
1309 * OFFSET, a signed 24-bit number, to the current instruction pointer.
1310 */
1311 VM_DEFINE_OP (29, br_if_true, "br-if-true", OP2 (U8_U24, B1_X7_L24))
1312 {
1313 BR_UNARY (x, scm_is_true (x));
1314 }
1315
1316 /* br-if-null test:24 invert:1 _:7 offset:24
1317 *
1318 * If the value in TEST is the end-of-list or Lisp nil, add OFFSET, a
1319 * signed 24-bit number, to the current instruction pointer.
1320 */
1321 VM_DEFINE_OP (30, br_if_null, "br-if-null", OP2 (U8_U24, B1_X7_L24))
1322 {
1323 BR_UNARY (x, scm_is_null (x));
1324 }
1325
1326 /* br-if-nil test:24 invert:1 _:7 offset:24
1327 *
1328 * If the value in TEST is false to Lisp, add OFFSET, a signed 24-bit
1329 * number, to the current instruction pointer.
1330 */
1331 VM_DEFINE_OP (31, br_if_nil, "br-if-nil", OP2 (U8_U24, B1_X7_L24))
1332 {
1333 BR_UNARY (x, scm_is_lisp_false (x));
1334 }
1335
1336 /* br-if-pair test:24 invert:1 _:7 offset:24
1337 *
1338 * If the value in TEST is a pair, add OFFSET, a signed 24-bit number,
1339 * to the current instruction pointer.
1340 */
1341 VM_DEFINE_OP (32, br_if_pair, "br-if-pair", OP2 (U8_U24, B1_X7_L24))
1342 {
1343 BR_UNARY (x, scm_is_pair (x));
1344 }
1345
1346 /* br-if-struct test:24 invert:1 _:7 offset:24
1347 *
1348 * If the value in TEST is a struct, add OFFSET, a signed 24-bit
1349 * number, to the current instruction pointer.
1350 */
1351 VM_DEFINE_OP (33, br_if_struct, "br-if-struct", OP2 (U8_U24, B1_X7_L24))
1352 {
1353 BR_UNARY (x, SCM_STRUCTP (x));
1354 }
1355
1356 /* br-if-char test:24 invert:1 _:7 offset:24
1357 *
1358 * If the value in TEST is a char, add OFFSET, a signed 24-bit number,
1359 * to the current instruction pointer.
1360 */
1361 VM_DEFINE_OP (34, br_if_char, "br-if-char", OP2 (U8_U24, B1_X7_L24))
1362 {
1363 BR_UNARY (x, SCM_CHARP (x));
1364 }
1365
1366 /* br-if-tc7 test:24 invert:1 tc7:7 offset:24
1367 *
1368 * If the value in TEST has the TC7 given in the second word, add
1369 * OFFSET, a signed 24-bit number, to the current instruction pointer.
1370 */
1371 VM_DEFINE_OP (35, br_if_tc7, "br-if-tc7", OP2 (U8_U24, B1_U7_L24))
1372 {
1373 BR_UNARY (x, SCM_HAS_TYP7 (x, (ip[1] >> 1) & 0x7f));
1374 }
1375
1376 /* br-if-eq a:12 b:12 invert:1 _:7 offset:24
1377 *
1378 * If the value in A is eq? to the value in B, add OFFSET, a signed
1379 * 24-bit number, to the current instruction pointer.
1380 */
1381 VM_DEFINE_OP (36, br_if_eq, "br-if-eq", OP2 (U8_U12_U12, B1_X7_L24))
1382 {
1383 BR_BINARY (x, y, scm_is_eq (x, y));
1384 }
1385
1386 /* br-if-eqv a:12 b:12 invert:1 _:7 offset:24
1387 *
1388 * If the value in A is eqv? to the value in B, add OFFSET, a signed
1389 * 24-bit number, to the current instruction pointer.
1390 */
1391 VM_DEFINE_OP (37, br_if_eqv, "br-if-eqv", OP2 (U8_U12_U12, B1_X7_L24))
1392 {
1393 BR_BINARY (x, y,
1394 scm_is_eq (x, y)
1395 || (SCM_NIMP (x) && SCM_NIMP (y)
1396 && scm_is_true (scm_eqv_p (x, y))));
1397 }
1398
1399 // FIXME: remove, have compiler inline eqv test instead
1400 /* br-if-equal a:12 b:12 invert:1 _:7 offset:24
1401 *
1402 * If the value in A is equal? to the value in B, add OFFSET, a signed
1403 * 24-bit number, to the current instruction pointer.
1404 */
1405 // FIXME: Should sync_ip before calling out and cache_fp before coming
1406 // back! Another reason to remove this opcode!
1407 VM_DEFINE_OP (38, br_if_equal, "br-if-equal", OP2 (U8_U12_U12, B1_X7_L24))
1408 {
1409 BR_BINARY (x, y,
1410 scm_is_eq (x, y)
1411 || (SCM_NIMP (x) && SCM_NIMP (y)
1412 && scm_is_true (scm_equal_p (x, y))));
1413 }
1414
1415 /* br-if-= a:12 b:12 invert:1 _:7 offset:24
1416 *
1417 * If the value in A is = to the value in B, add OFFSET, a signed
1418 * 24-bit number, to the current instruction pointer.
1419 */
1420 VM_DEFINE_OP (39, br_if_ee, "br-if-=", OP2 (U8_U12_U12, B1_X7_L24))
1421 {
1422 BR_ARITHMETIC (==, scm_num_eq_p);
1423 }
1424
1425 /* br-if-< a:12 b:12 invert:1 _:7 offset:24
1426 *
1427 * If the value in A is < to the value in B, add OFFSET, a signed
1428 * 24-bit number, to the current instruction pointer.
1429 */
1430 VM_DEFINE_OP (40, br_if_lt, "br-if-<", OP2 (U8_U12_U12, B1_X7_L24))
1431 {
1432 BR_ARITHMETIC (<, scm_less_p);
1433 }
1434
1435 /* br-if-<= a:12 b:12 invert:1 _:7 offset:24
1436 *
1437 * If the value in A is <= to the value in B, add OFFSET, a signed
1438 * 24-bit number, to the current instruction pointer.
1439 */
1440 VM_DEFINE_OP (41, br_if_le, "br-if-<=", OP2 (U8_U12_U12, B1_X7_L24))
1441 {
1442 BR_ARITHMETIC (<=, scm_leq_p);
1443 }
1444
1445
1446 \f
1447
1448 /*
1449 * Lexical binding instructions
1450 */
1451
1452 /* mov dst:12 src:12
1453 *
1454 * Copy a value from one local slot to another.
1455 */
1456 VM_DEFINE_OP (42, mov, "mov", OP1 (U8_U12_U12) | OP_DST)
1457 {
1458 scm_t_uint16 dst;
1459 scm_t_uint16 src;
1460
1461 UNPACK_12_12 (op, dst, src);
1462 LOCAL_SET (dst, LOCAL_REF (src));
1463
1464 NEXT (1);
1465 }
1466
1467 /* long-mov dst:24 _:8 src:24
1468 *
1469 * Copy a value from one local slot to another.
1470 */
1471 VM_DEFINE_OP (43, long_mov, "long-mov", OP2 (U8_U24, X8_U24) | OP_DST)
1472 {
1473 scm_t_uint32 dst;
1474 scm_t_uint32 src;
1475
1476 UNPACK_24 (op, dst);
1477 UNPACK_24 (ip[1], src);
1478 LOCAL_SET (dst, LOCAL_REF (src));
1479
1480 NEXT (2);
1481 }
1482
1483 /* box dst:12 src:12
1484 *
1485 * Create a new variable holding SRC, and place it in DST.
1486 */
1487 VM_DEFINE_OP (44, box, "box", OP1 (U8_U12_U12) | OP_DST)
1488 {
1489 scm_t_uint16 dst, src;
1490 UNPACK_12_12 (op, dst, src);
1491 LOCAL_SET (dst, scm_cell (scm_tc7_variable, SCM_UNPACK (LOCAL_REF (src))));
1492 NEXT (1);
1493 }
1494
1495 /* box-ref dst:12 src:12
1496 *
1497 * Unpack the variable at SRC into DST, asserting that the variable is
1498 * actually bound.
1499 */
1500 VM_DEFINE_OP (45, box_ref, "box-ref", OP1 (U8_U12_U12) | OP_DST)
1501 {
1502 scm_t_uint16 dst, src;
1503 SCM var;
1504 UNPACK_12_12 (op, dst, src);
1505 var = LOCAL_REF (src);
1506 VM_ASSERT (SCM_VARIABLEP (var),
1507 vm_error_not_a_variable ("variable-ref", var));
1508 VM_ASSERT (VARIABLE_BOUNDP (var),
1509 vm_error_unbound (SCM_FRAME_PROGRAM (fp), var));
1510 LOCAL_SET (dst, VARIABLE_REF (var));
1511 NEXT (1);
1512 }
1513
1514 /* box-set! dst:12 src:12
1515 *
1516 * Set the contents of the variable at DST to SET.
1517 */
1518 VM_DEFINE_OP (46, box_set, "box-set!", OP1 (U8_U12_U12))
1519 {
1520 scm_t_uint16 dst, src;
1521 SCM var;
1522 UNPACK_12_12 (op, dst, src);
1523 var = LOCAL_REF (dst);
1524 VM_ASSERT (SCM_VARIABLEP (var),
1525 vm_error_not_a_variable ("variable-set!", var));
1526 VARIABLE_SET (var, LOCAL_REF (src));
1527 NEXT (1);
1528 }
1529
1530 /* make-closure dst:24 offset:32 _:8 nfree:24
1531 *
1532 * Make a new closure, and write it to DST. The code for the closure
1533 * will be found at OFFSET words from the current IP. OFFSET is a
1534 * signed 32-bit integer. Space for NFREE free variables will be
1535 * allocated.
1536 */
1537 VM_DEFINE_OP (47, make_closure, "make-closure", OP3 (U8_U24, L32, X8_U24) | OP_DST)
1538 {
1539 scm_t_uint32 dst, nfree, n;
1540 scm_t_int32 offset;
1541 SCM closure;
1542
1543 UNPACK_24 (op, dst);
1544 offset = ip[1];
1545 UNPACK_24 (ip[2], nfree);
1546
1547 // FIXME: Assert range of nfree?
1548 closure = scm_words (scm_tc7_program | (nfree << 16), nfree + 2);
1549 SCM_SET_CELL_WORD_1 (closure, ip + offset);
1550 // FIXME: Elide these initializations?
1551 for (n = 0; n < nfree; n++)
1552 SCM_PROGRAM_FREE_VARIABLE_SET (closure, n, SCM_BOOL_F);
1553 LOCAL_SET (dst, closure);
1554 NEXT (3);
1555 }
1556
1557 /* free-ref dst:12 src:12 _:8 idx:24
1558 *
1559 * Load free variable IDX from the closure SRC into local slot DST.
1560 */
1561 VM_DEFINE_OP (48, free_ref, "free-ref", OP2 (U8_U12_U12, X8_U24) | OP_DST)
1562 {
1563 scm_t_uint16 dst, src;
1564 scm_t_uint32 idx;
1565 UNPACK_12_12 (op, dst, src);
1566 UNPACK_24 (ip[1], idx);
1567 /* CHECK_FREE_VARIABLE (src); */
1568 LOCAL_SET (dst, SCM_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (src), idx));
1569 NEXT (2);
1570 }
1571
1572 /* free-set! dst:12 src:12 _:8 idx:24
1573 *
1574 * Set free variable IDX from the closure DST to SRC.
1575 */
1576 VM_DEFINE_OP (49, free_set, "free-set!", OP2 (U8_U12_U12, X8_U24))
1577 {
1578 scm_t_uint16 dst, src;
1579 scm_t_uint32 idx;
1580 UNPACK_12_12 (op, dst, src);
1581 UNPACK_24 (ip[1], idx);
1582 /* CHECK_FREE_VARIABLE (src); */
1583 SCM_PROGRAM_FREE_VARIABLE_SET (LOCAL_REF (dst), idx, LOCAL_REF (src));
1584 NEXT (2);
1585 }
1586
1587
1588 \f
1589
1590 /*
1591 * Immediates and statically allocated non-immediates
1592 */
1593
1594 /* make-short-immediate dst:8 low-bits:16
1595 *
1596 * Make an immediate whose low bits are LOW-BITS, and whose top bits are
1597 * 0.
1598 */
1599 VM_DEFINE_OP (50, make_short_immediate, "make-short-immediate", OP1 (U8_U8_I16) | OP_DST)
1600 {
1601 scm_t_uint8 dst;
1602 scm_t_bits val;
1603
1604 UNPACK_8_16 (op, dst, val);
1605 LOCAL_SET (dst, SCM_PACK (val));
1606 NEXT (1);
1607 }
1608
1609 /* make-long-immediate dst:24 low-bits:32
1610 *
1611 * Make an immediate whose low bits are LOW-BITS, and whose top bits are
1612 * 0.
1613 */
1614 VM_DEFINE_OP (51, make_long_immediate, "make-long-immediate", OP2 (U8_U24, I32))
1615 {
1616 scm_t_uint32 dst;
1617 scm_t_bits val;
1618
1619 UNPACK_24 (op, dst);
1620 val = ip[1];
1621 LOCAL_SET (dst, SCM_PACK (val));
1622 NEXT (2);
1623 }
1624
1625 /* make-long-long-immediate dst:24 high-bits:32 low-bits:32
1626 *
1627 * Make an immediate with HIGH-BITS and LOW-BITS.
1628 */
1629 VM_DEFINE_OP (52, make_long_long_immediate, "make-long-long-immediate", OP3 (U8_U24, A32, B32) | OP_DST)
1630 {
1631 scm_t_uint32 dst;
1632 scm_t_bits val;
1633
1634 UNPACK_24 (op, dst);
1635 #if SIZEOF_SCM_T_BITS > 4
1636 val = ip[1];
1637 val <<= 32;
1638 val |= ip[2];
1639 #else
1640 ASSERT (ip[1] == 0);
1641 val = ip[2];
1642 #endif
1643 LOCAL_SET (dst, SCM_PACK (val));
1644 NEXT (3);
1645 }
1646
1647 /* make-non-immediate dst:24 offset:32
1648 *
1649 * Load a pointer to statically allocated memory into DST. The
1650 * object's memory is will be found OFFSET 32-bit words away from the
1651 * current instruction pointer. OFFSET is a signed value. The
1652 * intention here is that the compiler would produce an object file
1653 * containing the words of a non-immediate object, and this
1654 * instruction creates a pointer to that memory, effectively
1655 * resurrecting that object.
1656 *
1657 * Whether the object is mutable or immutable depends on where it was
1658 * allocated by the compiler, and loaded by the loader.
1659 */
1660 VM_DEFINE_OP (53, make_non_immediate, "make-non-immediate", OP2 (U8_U24, N32) | OP_DST)
1661 {
1662 scm_t_uint32 dst;
1663 scm_t_int32 offset;
1664 scm_t_uint32* loc;
1665 scm_t_bits unpacked;
1666
1667 UNPACK_24 (op, dst);
1668 offset = ip[1];
1669 loc = ip + offset;
1670 unpacked = (scm_t_bits) loc;
1671
1672 VM_ASSERT (!(unpacked & 0x7), abort());
1673
1674 LOCAL_SET (dst, SCM_PACK (unpacked));
1675
1676 NEXT (2);
1677 }
1678
1679 /* static-ref dst:24 offset:32
1680 *
1681 * Load a SCM value into DST. The SCM value will be fetched from
1682 * memory, OFFSET 32-bit words away from the current instruction
1683 * pointer. OFFSET is a signed value.
1684 *
1685 * The intention is for this instruction to be used to load constants
1686 * that the compiler is unable to statically allocate, like symbols.
1687 * These values would be initialized when the object file loads.
1688 */
1689 VM_DEFINE_OP (54, static_ref, "static-ref", OP2 (U8_U24, S32))
1690 {
1691 scm_t_uint32 dst;
1692 scm_t_int32 offset;
1693 scm_t_uint32* loc;
1694 scm_t_uintptr loc_bits;
1695
1696 UNPACK_24 (op, dst);
1697 offset = ip[1];
1698 loc = ip + offset;
1699 loc_bits = (scm_t_uintptr) loc;
1700 VM_ASSERT (ALIGNED_P (loc, SCM), abort());
1701
1702 LOCAL_SET (dst, *((SCM *) loc_bits));
1703
1704 NEXT (2);
1705 }
1706
1707 /* static-set! src:24 offset:32
1708 *
1709 * Store a SCM value into memory, OFFSET 32-bit words away from the
1710 * current instruction pointer. OFFSET is a signed value.
1711 */
1712 VM_DEFINE_OP (55, static_set, "static-set!", OP2 (U8_U24, LO32))
1713 {
1714 scm_t_uint32 src;
1715 scm_t_int32 offset;
1716 scm_t_uint32* loc;
1717
1718 UNPACK_24 (op, src);
1719 offset = ip[1];
1720 loc = ip + offset;
1721 VM_ASSERT (ALIGNED_P (loc, SCM), abort());
1722
1723 *((SCM *) loc) = LOCAL_REF (src);
1724
1725 NEXT (2);
1726 }
1727
1728 /* static-patch! _:24 dst-offset:32 src-offset:32
1729 *
1730 * Patch a pointer at DST-OFFSET to point to SRC-OFFSET. Both offsets
1731 * are signed 32-bit values, indicating a memory address as a number
1732 * of 32-bit words away from the current instruction pointer.
1733 */
1734 VM_DEFINE_OP (56, static_patch, "static-patch!", OP3 (U8_X24, LO32, L32))
1735 {
1736 scm_t_int32 dst_offset, src_offset;
1737 void *src;
1738 void** dst_loc;
1739
1740 dst_offset = ip[1];
1741 src_offset = ip[2];
1742
1743 dst_loc = (void **) (ip + dst_offset);
1744 src = ip + src_offset;
1745 VM_ASSERT (ALIGNED_P (dst_loc, void*), abort());
1746
1747 *dst_loc = src;
1748
1749 NEXT (3);
1750 }
1751
1752 \f
1753
1754 /*
1755 * Mutable top-level bindings
1756 */
1757
1758 /* There are three slightly different ways to resolve toplevel
1759 variables.
1760
1761 1. A toplevel reference outside of a function. These need to be
1762 looked up when the expression is evaluated -- no later, and no
1763 before. They are looked up relative to the module that is
1764 current when the expression is evaluated. For example:
1765
1766 (if (foo) a b)
1767
1768 The "resolve" instruction resolves the variable (box), and then
1769 access is via box-ref or box-set!.
1770
1771 2. A toplevel reference inside a function. These are looked up
1772 relative to the module that was current when the function was
1773 defined. Unlike code at the toplevel, which is usually run only
1774 once, these bindings benefit from memoized lookup, in which the
1775 variable resulting from the lookup is cached in the function.
1776
1777 (lambda () (if (foo) a b))
1778
1779 The toplevel-box instruction is equivalent to "resolve", but
1780 caches the resulting variable in statically allocated memory.
1781
1782 3. A reference to an identifier with respect to a particular
1783 module. This can happen for primitive references, and
1784 references residualized by macro expansions. These can always
1785 be cached. Use module-box for these.
1786 */
1787
1788 /* current-module dst:24
1789 *
1790 * Store the current module in DST.
1791 */
1792 VM_DEFINE_OP (57, current_module, "current-module", OP1 (U8_U24) | OP_DST)
1793 {
1794 scm_t_uint32 dst;
1795
1796 UNPACK_24 (op, dst);
1797
1798 SYNC_IP ();
1799 LOCAL_SET (dst, scm_current_module ());
1800
1801 NEXT (1);
1802 }
1803
1804 /* resolve dst:24 bound?:1 _:7 sym:24
1805 *
1806 * Resolve SYM in the current module, and place the resulting variable
1807 * in DST.
1808 */
1809 VM_DEFINE_OP (58, resolve, "resolve", OP2 (U8_U24, B1_X7_U24) | OP_DST)
1810 {
1811 scm_t_uint32 dst;
1812 scm_t_uint32 sym;
1813 SCM var;
1814
1815 UNPACK_24 (op, dst);
1816 UNPACK_24 (ip[1], sym);
1817
1818 SYNC_IP ();
1819 var = scm_lookup (LOCAL_REF (sym));
1820 CACHE_FP ();
1821 if (ip[1] & 0x1)
1822 VM_ASSERT (VARIABLE_BOUNDP (var),
1823 vm_error_unbound (fp[0], LOCAL_REF (sym)));
1824 LOCAL_SET (dst, var);
1825
1826 NEXT (2);
1827 }
1828
1829 /* define! sym:12 val:12
1830 *
1831 * Look up a binding for SYM in the current module, creating it if
1832 * necessary. Set its value to VAL.
1833 */
1834 VM_DEFINE_OP (59, define, "define!", OP1 (U8_U12_U12))
1835 {
1836 scm_t_uint16 sym, val;
1837 UNPACK_12_12 (op, sym, val);
1838 SYNC_IP ();
1839 scm_define (LOCAL_REF (sym), LOCAL_REF (val));
1840 CACHE_FP ();
1841 NEXT (1);
1842 }
1843
1844 /* toplevel-box dst:24 var-offset:32 mod-offset:32 sym-offset:32 bound?:1 _:31
1845 *
1846 * Load a SCM value. The SCM value will be fetched from memory,
1847 * VAR-OFFSET 32-bit words away from the current instruction pointer.
1848 * VAR-OFFSET is a signed value. Up to here, toplevel-box is like
1849 * static-ref.
1850 *
1851 * Then, if the loaded value is a variable, it is placed in DST, and control
1852 * flow continues.
1853 *
1854 * Otherwise, we have to resolve the variable. In that case we load
1855 * the module from MOD-OFFSET, just as we loaded the variable.
1856 * Usually the module gets set when the closure is created. The name
1857 * is an offset to a symbol.
1858 *
1859 * We use the module and the symbol to resolve the variable, placing it in
1860 * DST, and caching the resolved variable so that we will hit the cache next
1861 * time.
1862 */
1863 VM_DEFINE_OP (60, toplevel_box, "toplevel-box", OP5 (U8_U24, S32, S32, N32, B1_X31) | OP_DST)
1864 {
1865 scm_t_uint32 dst;
1866 scm_t_int32 var_offset;
1867 scm_t_uint32* var_loc_u32;
1868 SCM *var_loc;
1869 SCM var;
1870
1871 UNPACK_24 (op, dst);
1872 var_offset = ip[1];
1873 var_loc_u32 = ip + var_offset;
1874 VM_ASSERT (ALIGNED_P (var_loc_u32, SCM), abort());
1875 var_loc = (SCM *) var_loc_u32;
1876 var = *var_loc;
1877
1878 if (SCM_UNLIKELY (!SCM_VARIABLEP (var)))
1879 {
1880 SCM mod, sym;
1881 scm_t_int32 mod_offset = ip[2]; /* signed */
1882 scm_t_int32 sym_offset = ip[3]; /* signed */
1883 scm_t_uint32 *mod_loc = ip + mod_offset;
1884 scm_t_uint32 *sym_loc = ip + sym_offset;
1885
1886 SYNC_IP ();
1887
1888 VM_ASSERT (ALIGNED_P (mod_loc, SCM), abort());
1889 VM_ASSERT (ALIGNED_P (sym_loc, SCM), abort());
1890
1891 mod = *((SCM *) mod_loc);
1892 sym = *((SCM *) sym_loc);
1893
1894 /* If the toplevel scope was captured before modules were
1895 booted, use the root module. */
1896 if (scm_is_false (mod))
1897 mod = scm_the_root_module ();
1898
1899 var = scm_module_lookup (mod, sym);
1900 CACHE_FP ();
1901 if (ip[4] & 0x1)
1902 VM_ASSERT (VARIABLE_BOUNDP (var), vm_error_unbound (fp[0], sym));
1903
1904 *var_loc = var;
1905 }
1906
1907 LOCAL_SET (dst, var);
1908 NEXT (5);
1909 }
1910
1911 /* module-box dst:24 var-offset:32 mod-offset:32 sym-offset:32 bound?:1 _:31
1912 *
1913 * Like toplevel-box, except MOD-OFFSET points at the name of a module
1914 * instead of the module itself.
1915 */
1916 VM_DEFINE_OP (61, module_box, "module-box", OP5 (U8_U24, S32, N32, N32, B1_X31) | OP_DST)
1917 {
1918 scm_t_uint32 dst;
1919 scm_t_int32 var_offset;
1920 scm_t_uint32* var_loc_u32;
1921 SCM *var_loc;
1922 SCM var;
1923
1924 UNPACK_24 (op, dst);
1925 var_offset = ip[1];
1926 var_loc_u32 = ip + var_offset;
1927 VM_ASSERT (ALIGNED_P (var_loc_u32, SCM), abort());
1928 var_loc = (SCM *) var_loc_u32;
1929 var = *var_loc;
1930
1931 if (SCM_UNLIKELY (!SCM_VARIABLEP (var)))
1932 {
1933 SCM modname, sym;
1934 scm_t_int32 modname_offset = ip[2]; /* signed */
1935 scm_t_int32 sym_offset = ip[3]; /* signed */
1936 scm_t_uint32 *modname_words = ip + modname_offset;
1937 scm_t_uint32 *sym_loc = ip + sym_offset;
1938
1939 SYNC_IP ();
1940
1941 VM_ASSERT (!(((scm_t_uintptr) modname_words) & 0x7), abort());
1942 VM_ASSERT (ALIGNED_P (sym_loc, SCM), abort());
1943
1944 modname = SCM_PACK ((scm_t_bits) modname_words);
1945 sym = *((SCM *) sym_loc);
1946
1947 if (!scm_module_system_booted_p)
1948 {
1949 #ifdef VM_ENABLE_PARANOID_ASSERTIONS
1950 ASSERT
1951 (scm_is_true
1952 scm_equal_p (modname,
1953 scm_list_2 (SCM_BOOL_T,
1954 scm_from_utf8_symbol ("guile"))));
1955 #endif
1956 var = scm_lookup (sym);
1957 }
1958 else if (scm_is_true (SCM_CAR (modname)))
1959 var = scm_public_lookup (SCM_CDR (modname), sym);
1960 else
1961 var = scm_private_lookup (SCM_CDR (modname), sym);
1962
1963 CACHE_FP ();
1964
1965 if (ip[4] & 0x1)
1966 VM_ASSERT (VARIABLE_BOUNDP (var), vm_error_unbound (fp[0], sym));
1967
1968 *var_loc = var;
1969 }
1970
1971 LOCAL_SET (dst, var);
1972 NEXT (5);
1973 }
1974
1975 \f
1976
1977 /*
1978 * The dynamic environment
1979 */
1980
1981 /* prompt tag:24 escape-only?:1 _:7 proc-slot:24 _:8 handler-offset:24
1982 *
1983 * Push a new prompt on the dynamic stack, with a tag from TAG and a
1984 * handler at HANDLER-OFFSET words from the current IP. The handler
1985 * will expect a multiple-value return as if from a call with the
1986 * procedure at PROC-SLOT.
1987 */
1988 VM_DEFINE_OP (62, prompt, "prompt", OP3 (U8_U24, B1_X7_U24, X8_L24))
1989 {
1990 scm_t_uint32 tag, proc_slot;
1991 scm_t_int32 offset;
1992 scm_t_uint8 escape_only_p;
1993 scm_t_dynstack_prompt_flags flags;
1994
1995 UNPACK_24 (op, tag);
1996 escape_only_p = ip[1] & 0x1;
1997 UNPACK_24 (ip[1], proc_slot);
1998 offset = ip[2];
1999 offset >>= 8; /* Sign extension */
2000
2001 /* Push the prompt onto the dynamic stack. */
2002 flags = escape_only_p ? SCM_F_DYNSTACK_PROMPT_ESCAPE_ONLY : 0;
2003 scm_dynstack_push_prompt (&current_thread->dynstack, flags,
2004 LOCAL_REF (tag),
2005 fp - vp->stack_base,
2006 LOCAL_ADDRESS (proc_slot) - vp->stack_base,
2007 ip + offset,
2008 registers);
2009 NEXT (3);
2010 }
2011
2012 /* wind winder:12 unwinder:12
2013 *
2014 * Push wind and unwind procedures onto the dynamic stack. Note that
2015 * neither are actually called; the compiler should emit calls to wind
2016 * and unwind for the normal dynamic-wind control flow. Also note that
2017 * the compiler should have inserted checks that they wind and unwind
2018 * procs are thunks, if it could not prove that to be the case.
2019 */
2020 VM_DEFINE_OP (63, wind, "wind", OP1 (U8_U12_U12))
2021 {
2022 scm_t_uint16 winder, unwinder;
2023 UNPACK_12_12 (op, winder, unwinder);
2024 scm_dynstack_push_dynwind (&current_thread->dynstack,
2025 LOCAL_REF (winder), LOCAL_REF (unwinder));
2026 NEXT (1);
2027 }
2028
2029 /* unwind _:24
2030 *
2031 * A normal exit from the dynamic extent of an expression. Pop the top
2032 * entry off of the dynamic stack.
2033 */
2034 VM_DEFINE_OP (64, unwind, "unwind", OP1 (U8_X24))
2035 {
2036 scm_dynstack_pop (&current_thread->dynstack);
2037 NEXT (1);
2038 }
2039
2040 /* push-fluid fluid:12 value:12
2041 *
2042 * Dynamically bind VALUE to FLUID.
2043 */
2044 VM_DEFINE_OP (65, push_fluid, "push-fluid", OP1 (U8_U12_U12))
2045 {
2046 scm_t_uint32 fluid, value;
2047
2048 UNPACK_12_12 (op, fluid, value);
2049
2050 scm_dynstack_push_fluid (&current_thread->dynstack,
2051 LOCAL_REF (fluid), LOCAL_REF (value),
2052 current_thread->dynamic_state);
2053 NEXT (1);
2054 }
2055
2056 /* pop-fluid _:24
2057 *
2058 * Leave the dynamic extent of a with-fluid* expression, restoring the
2059 * fluid to its previous value.
2060 */
2061 VM_DEFINE_OP (66, pop_fluid, "pop-fluid", OP1 (U8_X24))
2062 {
2063 /* This function must not allocate. */
2064 scm_dynstack_unwind_fluid (&current_thread->dynstack,
2065 current_thread->dynamic_state);
2066 NEXT (1);
2067 }
2068
2069 /* fluid-ref dst:12 src:12
2070 *
2071 * Reference the fluid in SRC, and place the value in DST.
2072 */
2073 VM_DEFINE_OP (67, fluid_ref, "fluid-ref", OP1 (U8_U12_U12) | OP_DST)
2074 {
2075 scm_t_uint16 dst, src;
2076 size_t num;
2077 SCM fluid, fluids;
2078
2079 UNPACK_12_12 (op, dst, src);
2080 fluid = LOCAL_REF (src);
2081 fluids = SCM_I_DYNAMIC_STATE_FLUIDS (current_thread->dynamic_state);
2082 if (SCM_UNLIKELY (!SCM_FLUID_P (fluid))
2083 || ((num = SCM_I_FLUID_NUM (fluid)) >= SCM_SIMPLE_VECTOR_LENGTH (fluids)))
2084 {
2085 /* Punt dynstate expansion and error handling to the C proc. */
2086 SYNC_IP ();
2087 LOCAL_SET (dst, scm_fluid_ref (fluid));
2088 }
2089 else
2090 {
2091 SCM val = SCM_SIMPLE_VECTOR_REF (fluids, num);
2092 if (scm_is_eq (val, SCM_UNDEFINED))
2093 val = SCM_I_FLUID_DEFAULT (fluid);
2094 VM_ASSERT (!scm_is_eq (val, SCM_UNDEFINED),
2095 vm_error_unbound_fluid (SCM_FRAME_PROGRAM (fp), fluid));
2096 LOCAL_SET (dst, val);
2097 }
2098
2099 NEXT (1);
2100 }
2101
2102 /* fluid-set fluid:12 val:12
2103 *
2104 * Set the value of the fluid in DST to the value in SRC.
2105 */
2106 VM_DEFINE_OP (68, fluid_set, "fluid-set", OP1 (U8_U12_U12))
2107 {
2108 scm_t_uint16 a, b;
2109 size_t num;
2110 SCM fluid, fluids;
2111
2112 UNPACK_12_12 (op, a, b);
2113 fluid = LOCAL_REF (a);
2114 fluids = SCM_I_DYNAMIC_STATE_FLUIDS (current_thread->dynamic_state);
2115 if (SCM_UNLIKELY (!SCM_FLUID_P (fluid))
2116 || ((num = SCM_I_FLUID_NUM (fluid)) >= SCM_SIMPLE_VECTOR_LENGTH (fluids)))
2117 {
2118 /* Punt dynstate expansion and error handling to the C proc. */
2119 SYNC_IP ();
2120 scm_fluid_set_x (fluid, LOCAL_REF (b));
2121 }
2122 else
2123 SCM_SIMPLE_VECTOR_SET (fluids, num, LOCAL_REF (b));
2124
2125 NEXT (1);
2126 }
2127
2128
2129 \f
2130
2131 /*
2132 * Strings, symbols, and keywords
2133 */
2134
2135 /* string-length dst:12 src:12
2136 *
2137 * Store the length of the string in SRC in DST.
2138 */
2139 VM_DEFINE_OP (69, string_length, "string-length", OP1 (U8_U12_U12) | OP_DST)
2140 {
2141 ARGS1 (str);
2142 if (SCM_LIKELY (scm_is_string (str)))
2143 RETURN (SCM_I_MAKINUM (scm_i_string_length (str)));
2144 else
2145 {
2146 SYNC_IP ();
2147 RETURN (scm_string_length (str));
2148 }
2149 }
2150
2151 /* string-ref dst:8 src:8 idx:8
2152 *
2153 * Fetch the character at position IDX in the string in SRC, and store
2154 * it in DST.
2155 */
2156 VM_DEFINE_OP (70, string_ref, "string-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2157 {
2158 scm_t_signed_bits i = 0;
2159 ARGS2 (str, idx);
2160 if (SCM_LIKELY (scm_is_string (str)
2161 && SCM_I_INUMP (idx)
2162 && ((i = SCM_I_INUM (idx)) >= 0)
2163 && i < scm_i_string_length (str)))
2164 RETURN (SCM_MAKE_CHAR (scm_i_string_ref (str, i)));
2165 else
2166 {
2167 SYNC_IP ();
2168 RETURN (scm_string_ref (str, idx));
2169 }
2170 }
2171
2172 /* No string-set! instruction, as there is no good fast path there. */
2173
2174 /* string->number dst:12 src:12
2175 *
2176 * Parse a string in SRC to a number, and store in DST.
2177 */
2178 VM_DEFINE_OP (71, string_to_number, "string->number", OP1 (U8_U12_U12) | OP_DST)
2179 {
2180 scm_t_uint16 dst, src;
2181
2182 UNPACK_12_12 (op, dst, src);
2183 SYNC_IP ();
2184 LOCAL_SET (dst,
2185 scm_string_to_number (LOCAL_REF (src),
2186 SCM_UNDEFINED /* radix = 10 */));
2187 NEXT (1);
2188 }
2189
2190 /* string->symbol dst:12 src:12
2191 *
2192 * Parse a string in SRC to a symbol, and store in DST.
2193 */
2194 VM_DEFINE_OP (72, string_to_symbol, "string->symbol", OP1 (U8_U12_U12) | OP_DST)
2195 {
2196 scm_t_uint16 dst, src;
2197
2198 UNPACK_12_12 (op, dst, src);
2199 SYNC_IP ();
2200 LOCAL_SET (dst, scm_string_to_symbol (LOCAL_REF (src)));
2201 NEXT (1);
2202 }
2203
2204 /* symbol->keyword dst:12 src:12
2205 *
2206 * Make a keyword from the symbol in SRC, and store it in DST.
2207 */
2208 VM_DEFINE_OP (73, symbol_to_keyword, "symbol->keyword", OP1 (U8_U12_U12) | OP_DST)
2209 {
2210 scm_t_uint16 dst, src;
2211 UNPACK_12_12 (op, dst, src);
2212 SYNC_IP ();
2213 LOCAL_SET (dst, scm_symbol_to_keyword (LOCAL_REF (src)));
2214 NEXT (1);
2215 }
2216
2217 \f
2218
2219 /*
2220 * Pairs
2221 */
2222
2223 /* cons dst:8 car:8 cdr:8
2224 *
2225 * Cons CAR and CDR, and store the result in DST.
2226 */
2227 VM_DEFINE_OP (74, cons, "cons", OP1 (U8_U8_U8_U8) | OP_DST)
2228 {
2229 ARGS2 (x, y);
2230 RETURN (scm_cons (x, y));
2231 }
2232
2233 /* car dst:12 src:12
2234 *
2235 * Place the car of SRC in DST.
2236 */
2237 VM_DEFINE_OP (75, car, "car", OP1 (U8_U12_U12) | OP_DST)
2238 {
2239 ARGS1 (x);
2240 VM_VALIDATE_PAIR (x, "car");
2241 RETURN (SCM_CAR (x));
2242 }
2243
2244 /* cdr dst:12 src:12
2245 *
2246 * Place the cdr of SRC in DST.
2247 */
2248 VM_DEFINE_OP (76, cdr, "cdr", OP1 (U8_U12_U12) | OP_DST)
2249 {
2250 ARGS1 (x);
2251 VM_VALIDATE_PAIR (x, "cdr");
2252 RETURN (SCM_CDR (x));
2253 }
2254
2255 /* set-car! pair:12 car:12
2256 *
2257 * Set the car of DST to SRC.
2258 */
2259 VM_DEFINE_OP (77, set_car, "set-car!", OP1 (U8_U12_U12))
2260 {
2261 scm_t_uint16 a, b;
2262 SCM x, y;
2263 UNPACK_12_12 (op, a, b);
2264 x = LOCAL_REF (a);
2265 y = LOCAL_REF (b);
2266 VM_VALIDATE_PAIR (x, "set-car!");
2267 SCM_SETCAR (x, y);
2268 NEXT (1);
2269 }
2270
2271 /* set-cdr! pair:12 cdr:12
2272 *
2273 * Set the cdr of DST to SRC.
2274 */
2275 VM_DEFINE_OP (78, set_cdr, "set-cdr!", OP1 (U8_U12_U12))
2276 {
2277 scm_t_uint16 a, b;
2278 SCM x, y;
2279 UNPACK_12_12 (op, a, b);
2280 x = LOCAL_REF (a);
2281 y = LOCAL_REF (b);
2282 VM_VALIDATE_PAIR (x, "set-car!");
2283 SCM_SETCDR (x, y);
2284 NEXT (1);
2285 }
2286
2287
2288 \f
2289
2290 /*
2291 * Numeric operations
2292 */
2293
2294 /* add dst:8 a:8 b:8
2295 *
2296 * Add A to B, and place the result in DST.
2297 */
2298 VM_DEFINE_OP (79, add, "add", OP1 (U8_U8_U8_U8) | OP_DST)
2299 {
2300 BINARY_INTEGER_OP (+, scm_sum);
2301 }
2302
2303 /* add1 dst:12 src:12
2304 *
2305 * Add 1 to the value in SRC, and place the result in DST.
2306 */
2307 VM_DEFINE_OP (80, add1, "add1", OP1 (U8_U12_U12) | OP_DST)
2308 {
2309 ARGS1 (x);
2310
2311 /* Check for overflow. We must avoid overflow in the signed
2312 addition below, even if X is not an inum. */
2313 if (SCM_LIKELY ((scm_t_signed_bits) SCM_UNPACK (x) <= INUM_MAX - INUM_STEP))
2314 {
2315 SCM result;
2316
2317 /* Add 1 to the integer without untagging. */
2318 result = SCM_PACK ((scm_t_signed_bits) SCM_UNPACK (x) + INUM_STEP);
2319
2320 if (SCM_LIKELY (SCM_I_INUMP (result)))
2321 RETURN (result);
2322 }
2323
2324 RETURN_EXP (scm_sum (x, SCM_I_MAKINUM (1)));
2325 }
2326
2327 /* sub dst:8 a:8 b:8
2328 *
2329 * Subtract B from A, and place the result in DST.
2330 */
2331 VM_DEFINE_OP (81, sub, "sub", OP1 (U8_U8_U8_U8) | OP_DST)
2332 {
2333 BINARY_INTEGER_OP (-, scm_difference);
2334 }
2335
2336 /* sub1 dst:12 src:12
2337 *
2338 * Subtract 1 from SRC, and place the result in DST.
2339 */
2340 VM_DEFINE_OP (82, sub1, "sub1", OP1 (U8_U12_U12) | OP_DST)
2341 {
2342 ARGS1 (x);
2343
2344 /* Check for overflow. We must avoid overflow in the signed
2345 subtraction below, even if X is not an inum. */
2346 if (SCM_LIKELY ((scm_t_signed_bits) SCM_UNPACK (x) >= INUM_MIN + INUM_STEP))
2347 {
2348 SCM result;
2349
2350 /* Substract 1 from the integer without untagging. */
2351 result = SCM_PACK ((scm_t_signed_bits) SCM_UNPACK (x) - INUM_STEP);
2352
2353 if (SCM_LIKELY (SCM_I_INUMP (result)))
2354 RETURN (result);
2355 }
2356
2357 RETURN_EXP (scm_difference (x, SCM_I_MAKINUM (1)));
2358 }
2359
2360 /* mul dst:8 a:8 b:8
2361 *
2362 * Multiply A and B, and place the result in DST.
2363 */
2364 VM_DEFINE_OP (83, mul, "mul", OP1 (U8_U8_U8_U8) | OP_DST)
2365 {
2366 ARGS2 (x, y);
2367 RETURN_EXP (scm_product (x, y));
2368 }
2369
2370 /* div dst:8 a:8 b:8
2371 *
2372 * Divide A by B, and place the result in DST.
2373 */
2374 VM_DEFINE_OP (84, div, "div", OP1 (U8_U8_U8_U8) | OP_DST)
2375 {
2376 ARGS2 (x, y);
2377 RETURN_EXP (scm_divide (x, y));
2378 }
2379
2380 /* quo dst:8 a:8 b:8
2381 *
2382 * Divide A by B, and place the quotient in DST.
2383 */
2384 VM_DEFINE_OP (85, quo, "quo", OP1 (U8_U8_U8_U8) | OP_DST)
2385 {
2386 ARGS2 (x, y);
2387 RETURN_EXP (scm_quotient (x, y));
2388 }
2389
2390 /* rem dst:8 a:8 b:8
2391 *
2392 * Divide A by B, and place the remainder in DST.
2393 */
2394 VM_DEFINE_OP (86, rem, "rem", OP1 (U8_U8_U8_U8) | OP_DST)
2395 {
2396 ARGS2 (x, y);
2397 RETURN_EXP (scm_remainder (x, y));
2398 }
2399
2400 /* mod dst:8 a:8 b:8
2401 *
2402 * Place the modulo of A by B in DST.
2403 */
2404 VM_DEFINE_OP (87, mod, "mod", OP1 (U8_U8_U8_U8) | OP_DST)
2405 {
2406 ARGS2 (x, y);
2407 RETURN_EXP (scm_modulo (x, y));
2408 }
2409
2410 /* ash dst:8 a:8 b:8
2411 *
2412 * Shift A arithmetically by B bits, and place the result in DST.
2413 */
2414 VM_DEFINE_OP (88, ash, "ash", OP1 (U8_U8_U8_U8) | OP_DST)
2415 {
2416 ARGS2 (x, y);
2417 if (SCM_I_INUMP (x) && SCM_I_INUMP (y))
2418 {
2419 if (SCM_I_INUM (y) < 0)
2420 /* Right shift, will be a fixnum. */
2421 RETURN (SCM_I_MAKINUM
2422 (SCM_SRS (SCM_I_INUM (x),
2423 (-SCM_I_INUM (y) <= SCM_I_FIXNUM_BIT-1)
2424 ? -SCM_I_INUM (y) : SCM_I_FIXNUM_BIT-1)));
2425 else
2426 /* Left shift. See comments in scm_ash. */
2427 {
2428 scm_t_signed_bits nn, bits_to_shift;
2429
2430 nn = SCM_I_INUM (x);
2431 bits_to_shift = SCM_I_INUM (y);
2432
2433 if (bits_to_shift < SCM_I_FIXNUM_BIT-1
2434 && ((scm_t_bits)
2435 (SCM_SRS (nn, (SCM_I_FIXNUM_BIT-1 - bits_to_shift)) + 1)
2436 <= 1))
2437 RETURN (SCM_I_MAKINUM (nn << bits_to_shift));
2438 /* fall through */
2439 }
2440 /* fall through */
2441 }
2442 RETURN_EXP (scm_ash (x, y));
2443 }
2444
2445 /* logand dst:8 a:8 b:8
2446 *
2447 * Place the bitwise AND of A and B into DST.
2448 */
2449 VM_DEFINE_OP (89, logand, "logand", OP1 (U8_U8_U8_U8) | OP_DST)
2450 {
2451 ARGS2 (x, y);
2452 if (SCM_I_INUMP (x) && SCM_I_INUMP (y))
2453 /* Compute bitwise AND without untagging */
2454 RETURN (SCM_PACK (SCM_UNPACK (x) & SCM_UNPACK (y)));
2455 RETURN_EXP (scm_logand (x, y));
2456 }
2457
2458 /* logior dst:8 a:8 b:8
2459 *
2460 * Place the bitwise inclusive OR of A with B in DST.
2461 */
2462 VM_DEFINE_OP (90, logior, "logior", OP1 (U8_U8_U8_U8) | OP_DST)
2463 {
2464 ARGS2 (x, y);
2465 if (SCM_I_INUMP (x) && SCM_I_INUMP (y))
2466 /* Compute bitwise OR without untagging */
2467 RETURN (SCM_PACK (SCM_UNPACK (x) | SCM_UNPACK (y)));
2468 RETURN_EXP (scm_logior (x, y));
2469 }
2470
2471 /* logxor dst:8 a:8 b:8
2472 *
2473 * Place the bitwise exclusive OR of A with B in DST.
2474 */
2475 VM_DEFINE_OP (91, logxor, "logxor", OP1 (U8_U8_U8_U8) | OP_DST)
2476 {
2477 ARGS2 (x, y);
2478 if (SCM_I_INUMP (x) && SCM_I_INUMP (y))
2479 RETURN (SCM_I_MAKINUM (SCM_I_INUM (x) ^ SCM_I_INUM (y)));
2480 RETURN_EXP (scm_logxor (x, y));
2481 }
2482
2483 /* make-vector/immediate dst:8 length:8 init:8
2484 *
2485 * Make a short vector of known size and write it to DST. The vector
2486 * will have space for LENGTH slots, an immediate value. They will be
2487 * filled with the value in slot INIT.
2488 */
2489 VM_DEFINE_OP (92, make_vector_immediate, "make-vector/immediate", OP1 (U8_U8_U8_U8) | OP_DST)
2490 {
2491 scm_t_uint8 dst, init;
2492 scm_t_int32 length, n;
2493 SCM val, vector;
2494
2495 UNPACK_8_8_8 (op, dst, length, init);
2496
2497 val = LOCAL_REF (init);
2498 vector = scm_words (scm_tc7_vector | (length << 8), length + 1);
2499 for (n = 0; n < length; n++)
2500 SCM_SIMPLE_VECTOR_SET (vector, n, val);
2501 LOCAL_SET (dst, vector);
2502 NEXT (1);
2503 }
2504
2505 /* vector-length dst:12 src:12
2506 *
2507 * Store the length of the vector in SRC in DST.
2508 */
2509 VM_DEFINE_OP (93, vector_length, "vector-length", OP1 (U8_U12_U12) | OP_DST)
2510 {
2511 ARGS1 (vect);
2512 if (SCM_LIKELY (SCM_I_IS_VECTOR (vect)))
2513 RETURN (SCM_I_MAKINUM (SCM_I_VECTOR_LENGTH (vect)));
2514 else
2515 {
2516 SYNC_IP ();
2517 RETURN (scm_vector_length (vect));
2518 }
2519 }
2520
2521 /* vector-ref dst:8 src:8 idx:8
2522 *
2523 * Fetch the item at position IDX in the vector in SRC, and store it
2524 * in DST.
2525 */
2526 VM_DEFINE_OP (94, vector_ref, "vector-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2527 {
2528 scm_t_signed_bits i = 0;
2529 ARGS2 (vect, idx);
2530 if (SCM_LIKELY (SCM_I_IS_NONWEAK_VECTOR (vect)
2531 && SCM_I_INUMP (idx)
2532 && ((i = SCM_I_INUM (idx)) >= 0)
2533 && i < SCM_I_VECTOR_LENGTH (vect)))
2534 RETURN (SCM_I_VECTOR_ELTS (vect)[i]);
2535 else
2536 {
2537 SYNC_IP ();
2538 RETURN (scm_vector_ref (vect, idx));
2539 }
2540 }
2541
2542 /* vector-ref/immediate dst:8 src:8 idx:8
2543 *
2544 * Fill DST with the item IDX elements into the vector at SRC. Useful
2545 * for building data types using vectors.
2546 */
2547 VM_DEFINE_OP (95, vector_ref_immediate, "vector-ref/immediate", OP1 (U8_U8_U8_U8) | OP_DST)
2548 {
2549 scm_t_uint8 dst, src, idx;
2550 SCM v;
2551
2552 UNPACK_8_8_8 (op, dst, src, idx);
2553 v = LOCAL_REF (src);
2554 if (SCM_LIKELY (SCM_I_IS_NONWEAK_VECTOR (v)
2555 && idx < SCM_I_VECTOR_LENGTH (v)))
2556 LOCAL_SET (dst, SCM_I_VECTOR_ELTS (LOCAL_REF (src))[idx]);
2557 else
2558 LOCAL_SET (dst, scm_c_vector_ref (v, idx));
2559 NEXT (1);
2560 }
2561
2562 /* vector-set! dst:8 idx:8 src:8
2563 *
2564 * Store SRC into the vector DST at index IDX.
2565 */
2566 VM_DEFINE_OP (96, vector_set, "vector-set!", OP1 (U8_U8_U8_U8))
2567 {
2568 scm_t_uint8 dst, idx_var, src;
2569 SCM vect, idx, val;
2570 scm_t_signed_bits i = 0;
2571
2572 UNPACK_8_8_8 (op, dst, idx_var, src);
2573 vect = LOCAL_REF (dst);
2574 idx = LOCAL_REF (idx_var);
2575 val = LOCAL_REF (src);
2576
2577 if (SCM_LIKELY (SCM_I_IS_NONWEAK_VECTOR (vect)
2578 && SCM_I_INUMP (idx)
2579 && ((i = SCM_I_INUM (idx)) >= 0)
2580 && i < SCM_I_VECTOR_LENGTH (vect)))
2581 SCM_I_VECTOR_WELTS (vect)[i] = val;
2582 else
2583 {
2584 SYNC_IP ();
2585 scm_vector_set_x (vect, idx, val);
2586 }
2587 NEXT (1);
2588 }
2589
2590 /* vector-set!/immediate dst:8 idx:8 src:8
2591 *
2592 * Store SRC into the vector DST at index IDX. Here IDX is an
2593 * immediate value.
2594 */
2595 VM_DEFINE_OP (97, vector_set_immediate, "vector-set!/immediate", OP1 (U8_U8_U8_U8))
2596 {
2597 scm_t_uint8 dst, idx, src;
2598 SCM vect, val;
2599
2600 UNPACK_8_8_8 (op, dst, idx, src);
2601 vect = LOCAL_REF (dst);
2602 val = LOCAL_REF (src);
2603
2604 if (SCM_LIKELY (SCM_I_IS_NONWEAK_VECTOR (vect)
2605 && idx < SCM_I_VECTOR_LENGTH (vect)))
2606 SCM_I_VECTOR_WELTS (vect)[idx] = val;
2607 else
2608 {
2609 SYNC_IP ();
2610 scm_vector_set_x (vect, scm_from_uint8 (idx), val);
2611 }
2612 NEXT (1);
2613 }
2614
2615
2616 \f
2617
2618 /*
2619 * Structs and GOOPS
2620 */
2621
2622 /* struct-vtable dst:12 src:12
2623 *
2624 * Store the vtable of SRC into DST.
2625 */
2626 VM_DEFINE_OP (98, struct_vtable, "struct-vtable", OP1 (U8_U12_U12) | OP_DST)
2627 {
2628 ARGS1 (obj);
2629 VM_VALIDATE_STRUCT (obj, "struct_vtable");
2630 RETURN (SCM_STRUCT_VTABLE (obj));
2631 }
2632
2633 /* allocate-struct/immediate dst:8 vtable:8 nfields:8
2634 *
2635 * Allocate a new struct with VTABLE, and place it in DST. The struct
2636 * will be constructed with space for NFIELDS fields, which should
2637 * correspond to the field count of the VTABLE.
2638 */
2639 VM_DEFINE_OP (99, allocate_struct_immediate, "allocate-struct/immediate", OP1 (U8_U8_U8_U8) | OP_DST)
2640 {
2641 scm_t_uint8 dst, vtable, nfields;
2642 SCM ret;
2643
2644 UNPACK_8_8_8 (op, dst, vtable, nfields);
2645
2646 SYNC_IP ();
2647 ret = scm_allocate_struct (LOCAL_REF (vtable), SCM_I_MAKINUM (nfields));
2648 LOCAL_SET (dst, ret);
2649
2650 NEXT (1);
2651 }
2652
2653 /* struct-ref/immediate dst:8 src:8 idx:8
2654 *
2655 * Fetch the item at slot IDX in the struct in SRC, and store it
2656 * in DST. IDX is an immediate unsigned 8-bit value.
2657 */
2658 VM_DEFINE_OP (100, struct_ref_immediate, "struct-ref/immediate", OP1 (U8_U8_U8_U8) | OP_DST)
2659 {
2660 scm_t_uint8 dst, src, idx;
2661 SCM obj;
2662
2663 UNPACK_8_8_8 (op, dst, src, idx);
2664
2665 obj = LOCAL_REF (src);
2666
2667 if (SCM_LIKELY (SCM_STRUCTP (obj)
2668 && SCM_STRUCT_VTABLE_FLAG_IS_SET (obj,
2669 SCM_VTABLE_FLAG_SIMPLE)
2670 && idx < SCM_STRUCT_DATA_REF (SCM_STRUCT_VTABLE (obj),
2671 scm_vtable_index_size)))
2672 RETURN (SCM_STRUCT_SLOT_REF (obj, idx));
2673
2674 SYNC_IP ();
2675 RETURN (scm_struct_ref (obj, SCM_I_MAKINUM (idx)));
2676 }
2677
2678 /* struct-set!/immediate dst:8 idx:8 src:8
2679 *
2680 * Store SRC into the struct DST at slot IDX. IDX is an immediate
2681 * unsigned 8-bit value.
2682 */
2683 VM_DEFINE_OP (101, struct_set_immediate, "struct-set!/immediate", OP1 (U8_U8_U8_U8))
2684 {
2685 scm_t_uint8 dst, idx, src;
2686 SCM obj, val;
2687
2688 UNPACK_8_8_8 (op, dst, idx, src);
2689
2690 obj = LOCAL_REF (dst);
2691 val = LOCAL_REF (src);
2692
2693 if (SCM_LIKELY (SCM_STRUCTP (obj)
2694 && SCM_STRUCT_VTABLE_FLAG_IS_SET (obj,
2695 SCM_VTABLE_FLAG_SIMPLE)
2696 && SCM_STRUCT_VTABLE_FLAG_IS_SET (obj,
2697 SCM_VTABLE_FLAG_SIMPLE_RW)
2698 && idx < SCM_STRUCT_DATA_REF (SCM_STRUCT_VTABLE (obj),
2699 scm_vtable_index_size)))
2700 {
2701 SCM_STRUCT_SLOT_SET (obj, idx, val);
2702 NEXT (1);
2703 }
2704
2705 SYNC_IP ();
2706 scm_struct_set_x (obj, SCM_I_MAKINUM (idx), val);
2707 NEXT (1);
2708 }
2709
2710 /* class-of dst:12 type:12
2711 *
2712 * Store the vtable of SRC into DST.
2713 */
2714 VM_DEFINE_OP (102, class_of, "class-of", OP1 (U8_U12_U12) | OP_DST)
2715 {
2716 ARGS1 (obj);
2717 if (SCM_INSTANCEP (obj))
2718 RETURN (SCM_CLASS_OF (obj));
2719 SYNC_IP ();
2720 RETURN (scm_class_of (obj));
2721 }
2722
2723 VM_DEFINE_OP (103, unused_103, NULL, NOP)
2724 VM_DEFINE_OP (104, unused_104, NULL, NOP)
2725 goto op_unused_255;
2726
2727 \f
2728
2729 /*
2730 * Arrays, packed uniform arrays, and bytevectors.
2731 */
2732
2733 /* load-typed-array dst:8 type:8 shape:8 offset:32 len:32
2734 *
2735 * Load the contiguous typed array located at OFFSET 32-bit words away
2736 * from the instruction pointer, and store into DST. LEN is a byte
2737 * length. OFFSET is signed.
2738 */
2739 VM_DEFINE_OP (105, load_typed_array, "load-typed-array", OP3 (U8_U8_U8_U8, N32, U32) | OP_DST)
2740 {
2741 scm_t_uint8 dst, type, shape;
2742 scm_t_int32 offset;
2743 scm_t_uint32 len;
2744
2745 UNPACK_8_8_8 (op, dst, type, shape);
2746 offset = ip[1];
2747 len = ip[2];
2748 SYNC_IP ();
2749 LOCAL_SET (dst, scm_from_contiguous_typed_array (LOCAL_REF (type),
2750 LOCAL_REF (shape),
2751 ip + offset, len));
2752 NEXT (3);
2753 }
2754
2755 /* make-array dst:12 type:12 _:8 fill:12 bounds:12
2756 *
2757 * Make a new array with TYPE, FILL, and BOUNDS, storing it in DST.
2758 */
2759 VM_DEFINE_OP (106, make_array, "make-array", OP2 (U8_U12_U12, X8_U12_U12) | OP_DST)
2760 {
2761 scm_t_uint16 dst, type, fill, bounds;
2762 UNPACK_12_12 (op, dst, type);
2763 UNPACK_12_12 (ip[1], fill, bounds);
2764 SYNC_IP ();
2765 LOCAL_SET (dst, scm_make_typed_array (LOCAL_REF (type), LOCAL_REF (fill),
2766 LOCAL_REF (bounds)));
2767 NEXT (2);
2768 }
2769
2770 /* bv-u8-ref dst:8 src:8 idx:8
2771 * bv-s8-ref dst:8 src:8 idx:8
2772 * bv-u16-ref dst:8 src:8 idx:8
2773 * bv-s16-ref dst:8 src:8 idx:8
2774 * bv-u32-ref dst:8 src:8 idx:8
2775 * bv-s32-ref dst:8 src:8 idx:8
2776 * bv-u64-ref dst:8 src:8 idx:8
2777 * bv-s64-ref dst:8 src:8 idx:8
2778 * bv-f32-ref dst:8 src:8 idx:8
2779 * bv-f64-ref dst:8 src:8 idx:8
2780 *
2781 * Fetch the item at byte offset IDX in the bytevector SRC, and store
2782 * it in DST. All accesses use native endianness.
2783 */
2784 #define BV_FIXABLE_INT_REF(stem, fn_stem, type, size) \
2785 do { \
2786 scm_t_signed_bits i; \
2787 const scm_t_ ## type *int_ptr; \
2788 ARGS2 (bv, idx); \
2789 \
2790 VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-ref"); \
2791 i = SCM_I_INUM (idx); \
2792 int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \
2793 \
2794 if (SCM_LIKELY (SCM_I_INUMP (idx) \
2795 && (i >= 0) \
2796 && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \
2797 && (ALIGNED_P (int_ptr, scm_t_ ## type)))) \
2798 RETURN (SCM_I_MAKINUM (*int_ptr)); \
2799 else \
2800 { \
2801 SYNC_IP (); \
2802 RETURN (scm_bytevector_ ## fn_stem ## _ref (bv, idx)); \
2803 } \
2804 } while (0)
2805
2806 #define BV_INT_REF(stem, type, size) \
2807 do { \
2808 scm_t_signed_bits i; \
2809 const scm_t_ ## type *int_ptr; \
2810 ARGS2 (bv, idx); \
2811 \
2812 VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-ref"); \
2813 i = SCM_I_INUM (idx); \
2814 int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \
2815 \
2816 if (SCM_LIKELY (SCM_I_INUMP (idx) \
2817 && (i >= 0) \
2818 && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \
2819 && (ALIGNED_P (int_ptr, scm_t_ ## type)))) \
2820 { \
2821 scm_t_ ## type x = *int_ptr; \
2822 if (SCM_FIXABLE (x)) \
2823 RETURN (SCM_I_MAKINUM (x)); \
2824 else \
2825 { \
2826 SYNC_IP (); \
2827 RETURN (scm_from_ ## type (x)); \
2828 } \
2829 } \
2830 else \
2831 { \
2832 SYNC_IP (); \
2833 RETURN (scm_bytevector_ ## stem ## _native_ref (bv, idx)); \
2834 } \
2835 } while (0)
2836
2837 #define BV_FLOAT_REF(stem, fn_stem, type, size) \
2838 do { \
2839 scm_t_signed_bits i; \
2840 const type *float_ptr; \
2841 ARGS2 (bv, idx); \
2842 \
2843 VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-ref"); \
2844 i = SCM_I_INUM (idx); \
2845 float_ptr = (type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \
2846 \
2847 SYNC_IP (); \
2848 if (SCM_LIKELY (SCM_I_INUMP (idx) \
2849 && (i >= 0) \
2850 && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \
2851 && (ALIGNED_P (float_ptr, type)))) \
2852 RETURN (scm_from_double (*float_ptr)); \
2853 else \
2854 RETURN (scm_bytevector_ ## fn_stem ## _native_ref (bv, idx)); \
2855 } while (0)
2856
2857 VM_DEFINE_OP (107, bv_u8_ref, "bv-u8-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2858 BV_FIXABLE_INT_REF (u8, u8, uint8, 1);
2859
2860 VM_DEFINE_OP (108, bv_s8_ref, "bv-s8-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2861 BV_FIXABLE_INT_REF (s8, s8, int8, 1);
2862
2863 VM_DEFINE_OP (109, bv_u16_ref, "bv-u16-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2864 BV_FIXABLE_INT_REF (u16, u16_native, uint16, 2);
2865
2866 VM_DEFINE_OP (110, bv_s16_ref, "bv-s16-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2867 BV_FIXABLE_INT_REF (s16, s16_native, int16, 2);
2868
2869 VM_DEFINE_OP (111, bv_u32_ref, "bv-u32-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2870 #if SIZEOF_VOID_P > 4
2871 BV_FIXABLE_INT_REF (u32, u32_native, uint32, 4);
2872 #else
2873 BV_INT_REF (u32, uint32, 4);
2874 #endif
2875
2876 VM_DEFINE_OP (112, bv_s32_ref, "bv-s32-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2877 #if SIZEOF_VOID_P > 4
2878 BV_FIXABLE_INT_REF (s32, s32_native, int32, 4);
2879 #else
2880 BV_INT_REF (s32, int32, 4);
2881 #endif
2882
2883 VM_DEFINE_OP (113, bv_u64_ref, "bv-u64-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2884 BV_INT_REF (u64, uint64, 8);
2885
2886 VM_DEFINE_OP (114, bv_s64_ref, "bv-s64-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2887 BV_INT_REF (s64, int64, 8);
2888
2889 VM_DEFINE_OP (115, bv_f32_ref, "bv-f32-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2890 BV_FLOAT_REF (f32, ieee_single, float, 4);
2891
2892 VM_DEFINE_OP (116, bv_f64_ref, "bv-f64-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2893 BV_FLOAT_REF (f64, ieee_double, double, 8);
2894
2895 /* bv-u8-set! dst:8 idx:8 src:8
2896 * bv-s8-set! dst:8 idx:8 src:8
2897 * bv-u16-set! dst:8 idx:8 src:8
2898 * bv-s16-set! dst:8 idx:8 src:8
2899 * bv-u32-set! dst:8 idx:8 src:8
2900 * bv-s32-set! dst:8 idx:8 src:8
2901 * bv-u64-set! dst:8 idx:8 src:8
2902 * bv-s64-set! dst:8 idx:8 src:8
2903 * bv-f32-set! dst:8 idx:8 src:8
2904 * bv-f64-set! dst:8 idx:8 src:8
2905 *
2906 * Store SRC into the bytevector DST at byte offset IDX. Multibyte
2907 * values are written using native endianness.
2908 */
2909 #define BV_FIXABLE_INT_SET(stem, fn_stem, type, min, max, size) \
2910 do { \
2911 scm_t_uint8 dst, idx, src; \
2912 scm_t_signed_bits i, j = 0; \
2913 SCM bv, scm_idx, val; \
2914 scm_t_ ## type *int_ptr; \
2915 \
2916 UNPACK_8_8_8 (op, dst, idx, src); \
2917 bv = LOCAL_REF (dst); \
2918 scm_idx = LOCAL_REF (idx); \
2919 val = LOCAL_REF (src); \
2920 VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-set!"); \
2921 i = SCM_I_INUM (scm_idx); \
2922 int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \
2923 \
2924 if (SCM_LIKELY (SCM_I_INUMP (scm_idx) \
2925 && (i >= 0) \
2926 && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \
2927 && (ALIGNED_P (int_ptr, scm_t_ ## type)) \
2928 && (SCM_I_INUMP (val)) \
2929 && ((j = SCM_I_INUM (val)) >= min) \
2930 && (j <= max))) \
2931 *int_ptr = (scm_t_ ## type) j; \
2932 else \
2933 { \
2934 SYNC_IP (); \
2935 scm_bytevector_ ## fn_stem ## _set_x (bv, scm_idx, val); \
2936 } \
2937 NEXT (1); \
2938 } while (0)
2939
2940 #define BV_INT_SET(stem, type, size) \
2941 do { \
2942 scm_t_uint8 dst, idx, src; \
2943 scm_t_signed_bits i; \
2944 SCM bv, scm_idx, val; \
2945 scm_t_ ## type *int_ptr; \
2946 \
2947 UNPACK_8_8_8 (op, dst, idx, src); \
2948 bv = LOCAL_REF (dst); \
2949 scm_idx = LOCAL_REF (idx); \
2950 val = LOCAL_REF (src); \
2951 VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-set!"); \
2952 i = SCM_I_INUM (scm_idx); \
2953 int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \
2954 \
2955 if (SCM_LIKELY (SCM_I_INUMP (scm_idx) \
2956 && (i >= 0) \
2957 && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \
2958 && (ALIGNED_P (int_ptr, scm_t_ ## type)))) \
2959 *int_ptr = scm_to_ ## type (val); \
2960 else \
2961 { \
2962 SYNC_IP (); \
2963 scm_bytevector_ ## stem ## _native_set_x (bv, scm_idx, val); \
2964 } \
2965 NEXT (1); \
2966 } while (0)
2967
2968 #define BV_FLOAT_SET(stem, fn_stem, type, size) \
2969 do { \
2970 scm_t_uint8 dst, idx, src; \
2971 scm_t_signed_bits i; \
2972 SCM bv, scm_idx, val; \
2973 type *float_ptr; \
2974 \
2975 UNPACK_8_8_8 (op, dst, idx, src); \
2976 bv = LOCAL_REF (dst); \
2977 scm_idx = LOCAL_REF (idx); \
2978 val = LOCAL_REF (src); \
2979 VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-set!"); \
2980 i = SCM_I_INUM (scm_idx); \
2981 float_ptr = (type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \
2982 \
2983 if (SCM_LIKELY (SCM_I_INUMP (scm_idx) \
2984 && (i >= 0) \
2985 && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \
2986 && (ALIGNED_P (float_ptr, type)))) \
2987 *float_ptr = scm_to_double (val); \
2988 else \
2989 { \
2990 SYNC_IP (); \
2991 scm_bytevector_ ## fn_stem ## _native_set_x (bv, scm_idx, val); \
2992 } \
2993 NEXT (1); \
2994 } while (0)
2995
2996 VM_DEFINE_OP (117, bv_u8_set, "bv-u8-set!", OP1 (U8_U8_U8_U8))
2997 BV_FIXABLE_INT_SET (u8, u8, uint8, 0, SCM_T_UINT8_MAX, 1);
2998
2999 VM_DEFINE_OP (118, bv_s8_set, "bv-s8-set!", OP1 (U8_U8_U8_U8))
3000 BV_FIXABLE_INT_SET (s8, s8, int8, SCM_T_INT8_MIN, SCM_T_INT8_MAX, 1);
3001
3002 VM_DEFINE_OP (119, bv_u16_set, "bv-u16-set!", OP1 (U8_U8_U8_U8))
3003 BV_FIXABLE_INT_SET (u16, u16_native, uint16, 0, SCM_T_UINT16_MAX, 2);
3004
3005 VM_DEFINE_OP (120, bv_s16_set, "bv-s16-set!", OP1 (U8_U8_U8_U8))
3006 BV_FIXABLE_INT_SET (s16, s16_native, int16, SCM_T_INT16_MIN, SCM_T_INT16_MAX, 2);
3007
3008 VM_DEFINE_OP (121, bv_u32_set, "bv-u32-set!", OP1 (U8_U8_U8_U8))
3009 #if SIZEOF_VOID_P > 4
3010 BV_FIXABLE_INT_SET (u32, u32_native, uint32, 0, SCM_T_UINT32_MAX, 4);
3011 #else
3012 BV_INT_SET (u32, uint32, 4);
3013 #endif
3014
3015 VM_DEFINE_OP (122, bv_s32_set, "bv-s32-set!", OP1 (U8_U8_U8_U8))
3016 #if SIZEOF_VOID_P > 4
3017 BV_FIXABLE_INT_SET (s32, s32_native, int32, SCM_T_INT32_MIN, SCM_T_INT32_MAX, 4);
3018 #else
3019 BV_INT_SET (s32, int32, 4);
3020 #endif
3021
3022 VM_DEFINE_OP (123, bv_u64_set, "bv-u64-set!", OP1 (U8_U8_U8_U8))
3023 BV_INT_SET (u64, uint64, 8);
3024
3025 VM_DEFINE_OP (124, bv_s64_set, "bv-s64-set!", OP1 (U8_U8_U8_U8))
3026 BV_INT_SET (s64, int64, 8);
3027
3028 VM_DEFINE_OP (125, bv_f32_set, "bv-f32-set!", OP1 (U8_U8_U8_U8))
3029 BV_FLOAT_SET (f32, ieee_single, float, 4);
3030
3031 VM_DEFINE_OP (126, bv_f64_set, "bv-f64-set!", OP1 (U8_U8_U8_U8))
3032 BV_FLOAT_SET (f64, ieee_double, double, 8);
3033
3034 VM_DEFINE_OP (127, unused_127, NULL, NOP)
3035 VM_DEFINE_OP (128, unused_128, NULL, NOP)
3036 VM_DEFINE_OP (129, unused_129, NULL, NOP)
3037 VM_DEFINE_OP (130, unused_130, NULL, NOP)
3038 VM_DEFINE_OP (131, unused_131, NULL, NOP)
3039 VM_DEFINE_OP (132, unused_132, NULL, NOP)
3040 VM_DEFINE_OP (133, unused_133, NULL, NOP)
3041 VM_DEFINE_OP (134, unused_134, NULL, NOP)
3042 VM_DEFINE_OP (135, unused_135, NULL, NOP)
3043 VM_DEFINE_OP (136, unused_136, NULL, NOP)
3044 VM_DEFINE_OP (137, unused_137, NULL, NOP)
3045 VM_DEFINE_OP (138, unused_138, NULL, NOP)
3046 VM_DEFINE_OP (139, unused_139, NULL, NOP)
3047 VM_DEFINE_OP (140, unused_140, NULL, NOP)
3048 VM_DEFINE_OP (141, unused_141, NULL, NOP)
3049 VM_DEFINE_OP (142, unused_142, NULL, NOP)
3050 VM_DEFINE_OP (143, unused_143, NULL, NOP)
3051 VM_DEFINE_OP (144, unused_144, NULL, NOP)
3052 VM_DEFINE_OP (145, unused_145, NULL, NOP)
3053 VM_DEFINE_OP (146, unused_146, NULL, NOP)
3054 VM_DEFINE_OP (147, unused_147, NULL, NOP)
3055 VM_DEFINE_OP (148, unused_148, NULL, NOP)
3056 VM_DEFINE_OP (149, unused_149, NULL, NOP)
3057 VM_DEFINE_OP (150, unused_150, NULL, NOP)
3058 VM_DEFINE_OP (151, unused_151, NULL, NOP)
3059 VM_DEFINE_OP (152, unused_152, NULL, NOP)
3060 VM_DEFINE_OP (153, unused_153, NULL, NOP)
3061 VM_DEFINE_OP (154, unused_154, NULL, NOP)
3062 VM_DEFINE_OP (155, unused_155, NULL, NOP)
3063 VM_DEFINE_OP (156, unused_156, NULL, NOP)
3064 VM_DEFINE_OP (157, unused_157, NULL, NOP)
3065 VM_DEFINE_OP (158, unused_158, NULL, NOP)
3066 VM_DEFINE_OP (159, unused_159, NULL, NOP)
3067 VM_DEFINE_OP (160, unused_160, NULL, NOP)
3068 VM_DEFINE_OP (161, unused_161, NULL, NOP)
3069 VM_DEFINE_OP (162, unused_162, NULL, NOP)
3070 VM_DEFINE_OP (163, unused_163, NULL, NOP)
3071 VM_DEFINE_OP (164, unused_164, NULL, NOP)
3072 VM_DEFINE_OP (165, unused_165, NULL, NOP)
3073 VM_DEFINE_OP (166, unused_166, NULL, NOP)
3074 VM_DEFINE_OP (167, unused_167, NULL, NOP)
3075 VM_DEFINE_OP (168, unused_168, NULL, NOP)
3076 VM_DEFINE_OP (169, unused_169, NULL, NOP)
3077 VM_DEFINE_OP (170, unused_170, NULL, NOP)
3078 VM_DEFINE_OP (171, unused_171, NULL, NOP)
3079 VM_DEFINE_OP (172, unused_172, NULL, NOP)
3080 VM_DEFINE_OP (173, unused_173, NULL, NOP)
3081 VM_DEFINE_OP (174, unused_174, NULL, NOP)
3082 VM_DEFINE_OP (175, unused_175, NULL, NOP)
3083 VM_DEFINE_OP (176, unused_176, NULL, NOP)
3084 VM_DEFINE_OP (177, unused_177, NULL, NOP)
3085 VM_DEFINE_OP (178, unused_178, NULL, NOP)
3086 VM_DEFINE_OP (179, unused_179, NULL, NOP)
3087 VM_DEFINE_OP (180, unused_180, NULL, NOP)
3088 VM_DEFINE_OP (181, unused_181, NULL, NOP)
3089 VM_DEFINE_OP (182, unused_182, NULL, NOP)
3090 VM_DEFINE_OP (183, unused_183, NULL, NOP)
3091 VM_DEFINE_OP (184, unused_184, NULL, NOP)
3092 VM_DEFINE_OP (185, unused_185, NULL, NOP)
3093 VM_DEFINE_OP (186, unused_186, NULL, NOP)
3094 VM_DEFINE_OP (187, unused_187, NULL, NOP)
3095 VM_DEFINE_OP (188, unused_188, NULL, NOP)
3096 VM_DEFINE_OP (189, unused_189, NULL, NOP)
3097 VM_DEFINE_OP (190, unused_190, NULL, NOP)
3098 VM_DEFINE_OP (191, unused_191, NULL, NOP)
3099 VM_DEFINE_OP (192, unused_192, NULL, NOP)
3100 VM_DEFINE_OP (193, unused_193, NULL, NOP)
3101 VM_DEFINE_OP (194, unused_194, NULL, NOP)
3102 VM_DEFINE_OP (195, unused_195, NULL, NOP)
3103 VM_DEFINE_OP (196, unused_196, NULL, NOP)
3104 VM_DEFINE_OP (197, unused_197, NULL, NOP)
3105 VM_DEFINE_OP (198, unused_198, NULL, NOP)
3106 VM_DEFINE_OP (199, unused_199, NULL, NOP)
3107 VM_DEFINE_OP (200, unused_200, NULL, NOP)
3108 VM_DEFINE_OP (201, unused_201, NULL, NOP)
3109 VM_DEFINE_OP (202, unused_202, NULL, NOP)
3110 VM_DEFINE_OP (203, unused_203, NULL, NOP)
3111 VM_DEFINE_OP (204, unused_204, NULL, NOP)
3112 VM_DEFINE_OP (205, unused_205, NULL, NOP)
3113 VM_DEFINE_OP (206, unused_206, NULL, NOP)
3114 VM_DEFINE_OP (207, unused_207, NULL, NOP)
3115 VM_DEFINE_OP (208, unused_208, NULL, NOP)
3116 VM_DEFINE_OP (209, unused_209, NULL, NOP)
3117 VM_DEFINE_OP (210, unused_210, NULL, NOP)
3118 VM_DEFINE_OP (211, unused_211, NULL, NOP)
3119 VM_DEFINE_OP (212, unused_212, NULL, NOP)
3120 VM_DEFINE_OP (213, unused_213, NULL, NOP)
3121 VM_DEFINE_OP (214, unused_214, NULL, NOP)
3122 VM_DEFINE_OP (215, unused_215, NULL, NOP)
3123 VM_DEFINE_OP (216, unused_216, NULL, NOP)
3124 VM_DEFINE_OP (217, unused_217, NULL, NOP)
3125 VM_DEFINE_OP (218, unused_218, NULL, NOP)
3126 VM_DEFINE_OP (219, unused_219, NULL, NOP)
3127 VM_DEFINE_OP (220, unused_220, NULL, NOP)
3128 VM_DEFINE_OP (221, unused_221, NULL, NOP)
3129 VM_DEFINE_OP (222, unused_222, NULL, NOP)
3130 VM_DEFINE_OP (223, unused_223, NULL, NOP)
3131 VM_DEFINE_OP (224, unused_224, NULL, NOP)
3132 VM_DEFINE_OP (225, unused_225, NULL, NOP)
3133 VM_DEFINE_OP (226, unused_226, NULL, NOP)
3134 VM_DEFINE_OP (227, unused_227, NULL, NOP)
3135 VM_DEFINE_OP (228, unused_228, NULL, NOP)
3136 VM_DEFINE_OP (229, unused_229, NULL, NOP)
3137 VM_DEFINE_OP (230, unused_230, NULL, NOP)
3138 VM_DEFINE_OP (231, unused_231, NULL, NOP)
3139 VM_DEFINE_OP (232, unused_232, NULL, NOP)
3140 VM_DEFINE_OP (233, unused_233, NULL, NOP)
3141 VM_DEFINE_OP (234, unused_234, NULL, NOP)
3142 VM_DEFINE_OP (235, unused_235, NULL, NOP)
3143 VM_DEFINE_OP (236, unused_236, NULL, NOP)
3144 VM_DEFINE_OP (237, unused_237, NULL, NOP)
3145 VM_DEFINE_OP (238, unused_238, NULL, NOP)
3146 VM_DEFINE_OP (239, unused_239, NULL, NOP)
3147 VM_DEFINE_OP (240, unused_240, NULL, NOP)
3148 VM_DEFINE_OP (241, unused_241, NULL, NOP)
3149 VM_DEFINE_OP (242, unused_242, NULL, NOP)
3150 VM_DEFINE_OP (243, unused_243, NULL, NOP)
3151 VM_DEFINE_OP (244, unused_244, NULL, NOP)
3152 VM_DEFINE_OP (245, unused_245, NULL, NOP)
3153 VM_DEFINE_OP (246, unused_246, NULL, NOP)
3154 VM_DEFINE_OP (247, unused_247, NULL, NOP)
3155 VM_DEFINE_OP (248, unused_248, NULL, NOP)
3156 VM_DEFINE_OP (249, unused_249, NULL, NOP)
3157 VM_DEFINE_OP (250, unused_250, NULL, NOP)
3158 VM_DEFINE_OP (251, unused_251, NULL, NOP)
3159 VM_DEFINE_OP (252, unused_252, NULL, NOP)
3160 VM_DEFINE_OP (253, unused_253, NULL, NOP)
3161 VM_DEFINE_OP (254, unused_254, NULL, NOP)
3162 VM_DEFINE_OP (255, unused_255, NULL, NOP)
3163 {
3164 vm_error_bad_instruction (op);
3165 abort (); /* never reached */
3166 }
3167
3168 END_DISPATCH_SWITCH;
3169 }
3170
3171
3172 #undef ABORT_CONTINUATION_HOOK
3173 #undef ALIGNED_P
3174 #undef APPLY_HOOK
3175 #undef ARGS1
3176 #undef ARGS2
3177 #undef BEGIN_DISPATCH_SWITCH
3178 #undef BINARY_INTEGER_OP
3179 #undef BR_ARITHMETIC
3180 #undef BR_BINARY
3181 #undef BR_NARGS
3182 #undef BR_UNARY
3183 #undef BV_FIXABLE_INT_REF
3184 #undef BV_FIXABLE_INT_SET
3185 #undef BV_FLOAT_REF
3186 #undef BV_FLOAT_SET
3187 #undef BV_INT_REF
3188 #undef BV_INT_SET
3189 #undef CACHE_REGISTER
3190 #undef CHECK_OVERFLOW
3191 #undef END_DISPATCH_SWITCH
3192 #undef FREE_VARIABLE_REF
3193 #undef INIT
3194 #undef INUM_MAX
3195 #undef INUM_MIN
3196 #undef LOCAL_REF
3197 #undef LOCAL_SET
3198 #undef NEXT
3199 #undef NEXT_HOOK
3200 #undef NEXT_JUMP
3201 #undef POP_CONTINUATION_HOOK
3202 #undef PUSH_CONTINUATION_HOOK
3203 #undef RETURN
3204 #undef RETURN_ONE_VALUE
3205 #undef RETURN_VALUE_LIST
3206 #undef RUN_HOOK
3207 #undef RUN_HOOK0
3208 #undef RUN_HOOK1
3209 #undef SYNC_IP
3210 #undef UNPACK_8_8_8
3211 #undef UNPACK_8_16
3212 #undef UNPACK_16_8
3213 #undef UNPACK_12_12
3214 #undef UNPACK_24
3215 #undef VARIABLE_BOUNDP
3216 #undef VARIABLE_REF
3217 #undef VARIABLE_SET
3218 #undef VM_CHECK_FREE_VARIABLE
3219 #undef VM_CHECK_OBJECT
3220 #undef VM_CHECK_UNDERFLOW
3221 #undef VM_DEFINE_OP
3222 #undef VM_INSTRUCTION_TO_LABEL
3223 #undef VM_USE_HOOKS
3224 #undef VM_VALIDATE_BYTEVECTOR
3225 #undef VM_VALIDATE_PAIR
3226 #undef VM_VALIDATE_STRUCT
3227
3228 /*
3229 (defun renumber-ops ()
3230 "start from top of buffer and renumber 'VM_DEFINE_FOO (\n' sequences"
3231 (interactive "")
3232 (save-excursion
3233 (let ((counter -1)) (goto-char (point-min))
3234 (while (re-search-forward "^ *VM_DEFINE_[^ ]+ (\\([^,]+\\)," (point-max) t)
3235 (replace-match
3236 (number-to-string (setq counter (1+ counter)))
3237 t t nil 1)))))
3238 (renumber-ops)
3239 */
3240 /*
3241 Local Variables:
3242 c-file-style: "gnu"
3243 End:
3244 */
Unnamed repository; edit this file 'description' to name the repository.