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Fix up some opcode metadata
[bpt/guile.git] / libguile / vm-engine.c
1 /* Copyright (C) 2001, 2009, 2010, 2011, 2012, 2013, 2014 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 (thread, SYNC_IP (), CACHE_FP ())
131
132
133 /* Virtual Machine
134
135 The VM has three state bits: the instruction pointer (IP), the frame
136 pointer (FP), and the top-of-stack pointer (SP). We cache the first
137 two of these in machine registers, local to the VM, because they are
138 used extensively by the VM. As the SP is used more by code outside
139 the VM than by the VM itself, we don't bother caching it locally.
140
141 Since the FP changes infrequently, relative to the IP, we keep vp->fp
142 in sync with the local FP. This would be a big lose for the IP,
143 though, so instead of updating vp->ip all the time, we call SYNC_IP
144 whenever we would need to know the IP of the top frame. In practice,
145 we need to SYNC_IP whenever we call out of the VM to a function that
146 would like to walk the stack, perhaps as the result of an
147 exception.
148
149 One more thing. We allow the stack to move, when it expands.
150 Therefore if you call out to a C procedure that could call Scheme
151 code, or otherwise push anything on the stack, you will need to
152 CACHE_FP afterwards to restore the possibly-changed FP. */
153
154 #define SYNC_IP() vp->ip = (ip)
155
156 #define CACHE_FP() fp = (vp->fp)
157 #define CACHE_REGISTER() \
158 do { \
159 ip = vp->ip; \
160 fp = vp->fp; \
161 } while (0)
162
163
164 /* Reserve stack space for a frame. Will check that there is sufficient
165 stack space for N locals, including the procedure. Invoke after
166 preparing the new frame and setting the fp and ip.
167
168 If there is not enough space for this frame, we try to expand the
169 stack, possibly relocating it somewhere else in the address space.
170 Because of the possible relocation, no pointer into the stack besides
171 FP is valid across an ALLOC_FRAME call. Be careful! */
172 #define ALLOC_FRAME(n) \
173 do { \
174 SCM *new_sp = LOCAL_ADDRESS (n - 1); \
175 if (new_sp > vp->sp_max_since_gc) \
176 { \
177 if (SCM_UNLIKELY (new_sp >= vp->stack_limit)) \
178 { \
179 SYNC_IP (); \
180 vm_expand_stack (vp, new_sp); \
181 CACHE_FP (); \
182 } \
183 else \
184 vp->sp_max_since_gc = vp->sp = new_sp; \
185 } \
186 else \
187 vp->sp = new_sp; \
188 } while (0)
189
190 /* Reset the current frame to hold N locals. Used when we know that no
191 stack expansion is needed. */
192 #define RESET_FRAME(n) \
193 do { \
194 vp->sp = LOCAL_ADDRESS (n - 1); \
195 if (vp->sp > vp->sp_max_since_gc) \
196 vp->sp_max_since_gc = vp->sp; \
197 } while (0)
198
199 /* Compute the number of locals in the frame. At a call, this is equal
200 to the number of actual arguments when a function is first called,
201 plus one for the function. */
202 #define FRAME_LOCALS_COUNT_FROM(slot) \
203 (vp->sp + 1 - LOCAL_ADDRESS (slot))
204 #define FRAME_LOCALS_COUNT() \
205 FRAME_LOCALS_COUNT_FROM (0)
206
207 /* Restore registers after returning from a frame. */
208 #define RESTORE_FRAME() \
209 do { \
210 } while (0)
211
212
213 #ifdef HAVE_LABELS_AS_VALUES
214 # define BEGIN_DISPATCH_SWITCH /* */
215 # define END_DISPATCH_SWITCH /* */
216 # define NEXT(n) \
217 do \
218 { \
219 ip += n; \
220 NEXT_HOOK (); \
221 op = *ip; \
222 goto *jump_table[op & 0xff]; \
223 } \
224 while (0)
225 # define VM_DEFINE_OP(opcode, tag, name, meta) \
226 op_##tag:
227 #else
228 # define BEGIN_DISPATCH_SWITCH \
229 vm_start: \
230 NEXT_HOOK (); \
231 op = *ip; \
232 switch (op & 0xff) \
233 {
234 # define END_DISPATCH_SWITCH \
235 }
236 # define NEXT(n) \
237 do \
238 { \
239 ip += n; \
240 goto vm_start; \
241 } \
242 while (0)
243 # define VM_DEFINE_OP(opcode, tag, name, meta) \
244 op_##tag: \
245 case opcode:
246 #endif
247
248 #define LOCAL_ADDRESS(i) (&SCM_FRAME_LOCAL (fp, i))
249 #define LOCAL_REF(i) SCM_FRAME_LOCAL (fp, i)
250 #define LOCAL_SET(i,o) SCM_FRAME_LOCAL (fp, i) = o
251
252 #define VARIABLE_REF(v) SCM_VARIABLE_REF (v)
253 #define VARIABLE_SET(v,o) SCM_VARIABLE_SET (v, o)
254 #define VARIABLE_BOUNDP(v) (!scm_is_eq (VARIABLE_REF (v), SCM_UNDEFINED))
255
256 #define RETURN_ONE_VALUE(ret) \
257 do { \
258 SCM val = ret; \
259 SCM *old_fp; \
260 VM_HANDLE_INTERRUPTS; \
261 old_fp = fp; \
262 ip = SCM_FRAME_RETURN_ADDRESS (fp); \
263 fp = vp->fp = SCM_FRAME_DYNAMIC_LINK (fp); \
264 /* Clear frame. */ \
265 old_fp[-1] = SCM_BOOL_F; \
266 old_fp[-2] = SCM_BOOL_F; \
267 /* Leave proc. */ \
268 SCM_FRAME_LOCAL (old_fp, 1) = val; \
269 vp->sp = &SCM_FRAME_LOCAL (old_fp, 1); \
270 POP_CONTINUATION_HOOK (old_fp); \
271 NEXT (0); \
272 } while (0)
273
274 /* While we could generate the list-unrolling code here, it's fine for
275 now to just tail-call (apply values vals). */
276 #define RETURN_VALUE_LIST(vals_) \
277 do { \
278 SCM vals = vals_; \
279 VM_HANDLE_INTERRUPTS; \
280 fp[0] = vm_builtin_apply; \
281 fp[1] = vm_builtin_values; \
282 fp[2] = vals; \
283 RESET_FRAME (3); \
284 ip = (scm_t_uint32 *) vm_builtin_apply_code; \
285 goto op_tail_apply; \
286 } while (0)
287
288 #define BR_NARGS(rel) \
289 scm_t_uint32 expected; \
290 UNPACK_24 (op, expected); \
291 if (FRAME_LOCALS_COUNT() rel expected) \
292 { \
293 scm_t_int32 offset = ip[1]; \
294 offset >>= 8; /* Sign-extending shift. */ \
295 NEXT (offset); \
296 } \
297 NEXT (2)
298
299 #define BR_UNARY(x, exp) \
300 scm_t_uint32 test; \
301 SCM x; \
302 UNPACK_24 (op, test); \
303 x = LOCAL_REF (test); \
304 if ((ip[1] & 0x1) ? !(exp) : (exp)) \
305 { \
306 scm_t_int32 offset = ip[1]; \
307 offset >>= 8; /* Sign-extending shift. */ \
308 if (offset <= 0) \
309 VM_HANDLE_INTERRUPTS; \
310 NEXT (offset); \
311 } \
312 NEXT (2)
313
314 #define BR_BINARY(x, y, exp) \
315 scm_t_uint16 a, b; \
316 SCM x, y; \
317 UNPACK_12_12 (op, a, b); \
318 x = LOCAL_REF (a); \
319 y = LOCAL_REF (b); \
320 if ((ip[1] & 0x1) ? !(exp) : (exp)) \
321 { \
322 scm_t_int32 offset = ip[1]; \
323 offset >>= 8; /* Sign-extending shift. */ \
324 if (offset <= 0) \
325 VM_HANDLE_INTERRUPTS; \
326 NEXT (offset); \
327 } \
328 NEXT (2)
329
330 #define BR_ARITHMETIC(crel,srel) \
331 { \
332 scm_t_uint16 a, b; \
333 SCM x, y; \
334 UNPACK_12_12 (op, a, b); \
335 x = LOCAL_REF (a); \
336 y = LOCAL_REF (b); \
337 if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) \
338 { \
339 scm_t_signed_bits x_bits = SCM_UNPACK (x); \
340 scm_t_signed_bits y_bits = SCM_UNPACK (y); \
341 if ((ip[1] & 0x1) ? !(x_bits crel y_bits) : (x_bits crel y_bits)) \
342 { \
343 scm_t_int32 offset = ip[1]; \
344 offset >>= 8; /* Sign-extending shift. */ \
345 if (offset <= 0) \
346 VM_HANDLE_INTERRUPTS; \
347 NEXT (offset); \
348 } \
349 NEXT (2); \
350 } \
351 else \
352 { \
353 SCM res; \
354 SYNC_IP (); \
355 res = srel (x, y); \
356 CACHE_FP (); \
357 if ((ip[1] & 0x1) ? scm_is_false (res) : scm_is_true (res)) \
358 { \
359 scm_t_int32 offset = ip[1]; \
360 offset >>= 8; /* Sign-extending shift. */ \
361 if (offset <= 0) \
362 VM_HANDLE_INTERRUPTS; \
363 NEXT (offset); \
364 } \
365 NEXT (2); \
366 } \
367 }
368
369 #define ARGS1(a1) \
370 scm_t_uint16 dst, src; \
371 SCM a1; \
372 UNPACK_12_12 (op, dst, src); \
373 a1 = LOCAL_REF (src)
374 #define ARGS2(a1, a2) \
375 scm_t_uint8 dst, src1, src2; \
376 SCM a1, a2; \
377 UNPACK_8_8_8 (op, dst, src1, src2); \
378 a1 = LOCAL_REF (src1); \
379 a2 = LOCAL_REF (src2)
380 #define RETURN(x) \
381 do { LOCAL_SET (dst, x); NEXT (1); } while (0)
382 #define RETURN_EXP(exp) \
383 do { SCM __x; SYNC_IP (); __x = exp; CACHE_FP (); RETURN (__x); } while (0)
384
385 /* The maximum/minimum tagged integers. */
386 #define INUM_MAX \
387 ((scm_t_signed_bits) SCM_UNPACK (SCM_I_MAKINUM (SCM_MOST_POSITIVE_FIXNUM)))
388 #define INUM_MIN \
389 ((scm_t_signed_bits) SCM_UNPACK (SCM_I_MAKINUM (SCM_MOST_NEGATIVE_FIXNUM)))
390 #define INUM_STEP \
391 ((scm_t_signed_bits) SCM_UNPACK (SCM_INUM1) \
392 - (scm_t_signed_bits) SCM_UNPACK (SCM_INUM0))
393
394 #define BINARY_INTEGER_OP(CFUNC,SFUNC) \
395 { \
396 ARGS2 (x, y); \
397 if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) \
398 { \
399 scm_t_int64 n = SCM_I_INUM (x) CFUNC SCM_I_INUM (y); \
400 if (SCM_FIXABLE (n)) \
401 RETURN (SCM_I_MAKINUM (n)); \
402 } \
403 RETURN_EXP (SFUNC (x, y)); \
404 }
405
406 #define VM_VALIDATE_PAIR(x, proc) \
407 VM_ASSERT (scm_is_pair (x), vm_error_not_a_pair (proc, x))
408
409 #define VM_VALIDATE_STRUCT(obj, proc) \
410 VM_ASSERT (SCM_STRUCTP (obj), vm_error_not_a_pair (proc, obj))
411
412 #define VM_VALIDATE_BYTEVECTOR(x, proc) \
413 VM_ASSERT (SCM_BYTEVECTOR_P (x), vm_error_not_a_bytevector (proc, x))
414
415 /* Return true (non-zero) if PTR has suitable alignment for TYPE. */
416 #define ALIGNED_P(ptr, type) \
417 ((scm_t_uintptr) (ptr) % alignof_type (type) == 0)
418
419 static SCM
420 VM_NAME (scm_i_thread *thread, struct scm_vm *vp,
421 scm_i_jmp_buf *registers, int resume)
422 {
423 /* Instruction pointer: A pointer to the opcode that is currently
424 running. */
425 register scm_t_uint32 *ip IP_REG;
426
427 /* Frame pointer: A pointer into the stack, off of which we index
428 arguments and local variables. Pushed at function calls, popped on
429 returns. */
430 register SCM *fp FP_REG;
431
432 /* Current opcode: A cache of *ip. */
433 register scm_t_uint32 op;
434
435 #ifdef HAVE_LABELS_AS_VALUES
436 static const void *jump_table_[256] = {
437 #define LABEL_ADDR(opcode, tag, name, meta) &&op_##tag,
438 FOR_EACH_VM_OPERATION(LABEL_ADDR)
439 #undef LABEL_ADDR
440 };
441 register const void **jump_table JT_REG;
442 /* Attempt to keep JUMP_TABLE_POINTER in a register. This saves one
443 load instruction at each instruction dispatch. */
444 jump_table = jump_table_;
445 #endif
446
447 /* Load VM registers. */
448 CACHE_REGISTER ();
449
450 VM_HANDLE_INTERRUPTS;
451
452 /* Usually a call to the VM happens on application, with the boot
453 continuation on the next frame. Sometimes it happens after a
454 non-local exit however; in that case the VM state is all set up,
455 and we have but to jump to the next opcode. */
456 if (SCM_UNLIKELY (resume))
457 NEXT (0);
458
459 apply:
460 while (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp)))
461 {
462 SCM proc = SCM_FRAME_PROGRAM (fp);
463
464 if (SCM_STRUCTP (proc) && SCM_STRUCT_APPLICABLE_P (proc))
465 {
466 LOCAL_SET (0, SCM_STRUCT_PROCEDURE (proc));
467 continue;
468 }
469 if (SCM_HAS_TYP7 (proc, scm_tc7_smob) && SCM_SMOB_APPLICABLE_P (proc))
470 {
471 scm_t_uint32 n = FRAME_LOCALS_COUNT();
472
473 /* Shuffle args up. */
474 RESET_FRAME (n + 1);
475 while (n--)
476 LOCAL_SET (n + 1, LOCAL_REF (n));
477
478 LOCAL_SET (0, SCM_SMOB_DESCRIPTOR (proc).apply_trampoline);
479 continue;
480 }
481
482 SYNC_IP();
483 vm_error_wrong_type_apply (proc);
484 }
485
486 /* Let's go! */
487 ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp));
488 NEXT (0);
489
490 BEGIN_DISPATCH_SWITCH;
491
492
493 \f
494
495 /*
496 * Call and return
497 */
498
499 /* halt _:24
500 *
501 * Bring the VM to a halt, returning all the values from the stack.
502 */
503 VM_DEFINE_OP (0, halt, "halt", OP1 (U8_X24))
504 {
505 /* Boot closure in r0, empty frame in r1/r2, proc in r3, values from r4. */
506
507 scm_t_uint32 nvals = FRAME_LOCALS_COUNT_FROM (4);
508 SCM ret;
509
510 if (nvals == 1)
511 ret = LOCAL_REF (4);
512 else
513 {
514 scm_t_uint32 n;
515 ret = SCM_EOL;
516 for (n = nvals; n > 0; n--)
517 ret = scm_inline_cons (thread, LOCAL_REF (4 + n - 1), ret);
518 ret = scm_values (ret);
519 }
520
521 vp->ip = SCM_FRAME_RETURN_ADDRESS (fp);
522 vp->sp = SCM_FRAME_PREVIOUS_SP (fp);
523 vp->fp = SCM_FRAME_DYNAMIC_LINK (fp);
524
525 return ret;
526 }
527
528 /* call proc:24 _:8 nlocals:24
529 *
530 * Call a procedure. PROC is the local corresponding to a procedure.
531 * The two values below PROC will be overwritten by the saved call
532 * frame data. The new frame will have space for NLOCALS locals: one
533 * for the procedure, and the rest for the arguments which should
534 * already have been pushed on.
535 *
536 * When the call returns, execution proceeds with the next
537 * instruction. There may be any number of values on the return
538 * stack; the precise number can be had by subtracting the address of
539 * PROC from the post-call SP.
540 */
541 VM_DEFINE_OP (1, call, "call", OP2 (U8_U24, X8_U24))
542 {
543 scm_t_uint32 proc, nlocals;
544 SCM *old_fp;
545
546 UNPACK_24 (op, proc);
547 UNPACK_24 (ip[1], nlocals);
548
549 VM_HANDLE_INTERRUPTS;
550
551 old_fp = fp;
552 fp = vp->fp = old_fp + proc;
553 SCM_FRAME_SET_DYNAMIC_LINK (fp, old_fp);
554 SCM_FRAME_SET_RETURN_ADDRESS (fp, ip + 2);
555
556 RESET_FRAME (nlocals);
557
558 PUSH_CONTINUATION_HOOK ();
559 APPLY_HOOK ();
560
561 if (SCM_UNLIKELY (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp))))
562 goto apply;
563
564 ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp));
565 NEXT (0);
566 }
567
568 /* call-label proc:24 _:8 nlocals:24 label:32
569 *
570 * Call a procedure in the same compilation unit.
571 *
572 * This instruction is just like "call", except that instead of
573 * dereferencing PROC to find the call target, the call target is
574 * known to be at LABEL, a signed 32-bit offset in 32-bit units from
575 * the current IP. Since PROC is not dereferenced, it may be some
576 * other representation of the closure.
577 */
578 VM_DEFINE_OP (2, call_label, "call-label", OP3 (U8_U24, X8_U24, L32))
579 {
580 scm_t_uint32 proc, nlocals;
581 scm_t_int32 label;
582 SCM *old_fp;
583
584 UNPACK_24 (op, proc);
585 UNPACK_24 (ip[1], nlocals);
586 label = ip[2];
587
588 VM_HANDLE_INTERRUPTS;
589
590 old_fp = fp;
591 fp = vp->fp = old_fp + proc;
592 SCM_FRAME_SET_DYNAMIC_LINK (fp, old_fp);
593 SCM_FRAME_SET_RETURN_ADDRESS (fp, ip + 3);
594
595 RESET_FRAME (nlocals);
596
597 PUSH_CONTINUATION_HOOK ();
598 APPLY_HOOK ();
599
600 NEXT (label);
601 }
602
603 /* tail-call nlocals:24
604 *
605 * Tail-call a procedure. Requires that the procedure and all of the
606 * arguments have already been shuffled into position. Will reset the
607 * frame to NLOCALS.
608 */
609 VM_DEFINE_OP (3, tail_call, "tail-call", OP1 (U8_U24))
610 {
611 scm_t_uint32 nlocals;
612
613 UNPACK_24 (op, nlocals);
614
615 VM_HANDLE_INTERRUPTS;
616
617 RESET_FRAME (nlocals);
618
619 APPLY_HOOK ();
620
621 if (SCM_UNLIKELY (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp))))
622 goto apply;
623
624 ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp));
625 NEXT (0);
626 }
627
628 /* tail-call-label nlocals:24 label:32
629 *
630 * Tail-call a known procedure. As call is to call-label, tail-call
631 * is to tail-call-label.
632 */
633 VM_DEFINE_OP (4, tail_call_label, "tail-call-label", OP2 (U8_U24, L32))
634 {
635 scm_t_uint32 nlocals;
636 scm_t_int32 label;
637
638 UNPACK_24 (op, nlocals);
639 label = ip[1];
640
641 VM_HANDLE_INTERRUPTS;
642
643 RESET_FRAME (nlocals);
644
645 APPLY_HOOK ();
646
647 NEXT (label);
648 }
649
650 /* tail-call/shuffle from:24
651 *
652 * Tail-call a procedure. The procedure should already be set to slot
653 * 0. The rest of the args are taken from the frame, starting at
654 * FROM, shuffled down to start at slot 0. This is part of the
655 * implementation of the call-with-values builtin.
656 */
657 VM_DEFINE_OP (5, tail_call_shuffle, "tail-call/shuffle", OP1 (U8_U24))
658 {
659 scm_t_uint32 n, from, nlocals;
660
661 UNPACK_24 (op, from);
662
663 VM_HANDLE_INTERRUPTS;
664
665 VM_ASSERT (from > 0, abort ());
666 nlocals = FRAME_LOCALS_COUNT ();
667
668 for (n = 0; from + n < nlocals; n++)
669 LOCAL_SET (n + 1, LOCAL_REF (from + n));
670
671 RESET_FRAME (n + 1);
672
673 APPLY_HOOK ();
674
675 if (SCM_UNLIKELY (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp))))
676 goto apply;
677
678 ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp));
679 NEXT (0);
680 }
681
682 /* receive dst:12 proc:12 _:8 nlocals:24
683 *
684 * Receive a single return value from a call whose procedure was in
685 * PROC, asserting that the call actually returned at least one
686 * value. Afterwards, resets the frame to NLOCALS locals.
687 */
688 VM_DEFINE_OP (6, receive, "receive", OP2 (U8_U12_U12, X8_U24) | OP_DST)
689 {
690 scm_t_uint16 dst, proc;
691 scm_t_uint32 nlocals;
692 UNPACK_12_12 (op, dst, proc);
693 UNPACK_24 (ip[1], nlocals);
694 VM_ASSERT (FRAME_LOCALS_COUNT () > proc + 1, vm_error_no_values ());
695 LOCAL_SET (dst, LOCAL_REF (proc + 1));
696 RESET_FRAME (nlocals);
697 NEXT (2);
698 }
699
700 /* receive-values proc:24 allow-extra?:1 _:7 nvalues:24
701 *
702 * Receive a return of multiple values from a call whose procedure was
703 * in PROC. If fewer than NVALUES values were returned, signal an
704 * error. Unless ALLOW-EXTRA? is true, require that the number of
705 * return values equals NVALUES exactly. After receive-values has
706 * run, the values can be copied down via `mov'.
707 */
708 VM_DEFINE_OP (7, receive_values, "receive-values", OP2 (U8_U24, B1_X7_U24))
709 {
710 scm_t_uint32 proc, nvalues;
711 UNPACK_24 (op, proc);
712 UNPACK_24 (ip[1], nvalues);
713 if (ip[1] & 0x1)
714 VM_ASSERT (FRAME_LOCALS_COUNT () > proc + nvalues,
715 vm_error_not_enough_values ());
716 else
717 VM_ASSERT (FRAME_LOCALS_COUNT () == proc + 1 + nvalues,
718 vm_error_wrong_number_of_values (nvalues));
719 NEXT (2);
720 }
721
722 /* return src:24
723 *
724 * Return a value.
725 */
726 VM_DEFINE_OP (8, return, "return", OP1 (U8_U24))
727 {
728 scm_t_uint32 src;
729 UNPACK_24 (op, src);
730 RETURN_ONE_VALUE (LOCAL_REF (src));
731 }
732
733 /* return-values _:24
734 *
735 * Return a number of values from a call frame. This opcode
736 * corresponds to an application of `values' in tail position. As
737 * with tail calls, we expect that the values have already been
738 * shuffled down to a contiguous array starting at slot 1.
739 * We also expect the frame has already been reset.
740 */
741 VM_DEFINE_OP (9, return_values, "return-values", OP1 (U8_X24))
742 {
743 SCM *old_fp;
744
745 VM_HANDLE_INTERRUPTS;
746
747 old_fp = fp;
748 ip = SCM_FRAME_RETURN_ADDRESS (fp);
749 fp = vp->fp = SCM_FRAME_DYNAMIC_LINK (fp);
750
751 /* Clear stack frame. */
752 old_fp[-1] = SCM_BOOL_F;
753 old_fp[-2] = SCM_BOOL_F;
754
755 POP_CONTINUATION_HOOK (old_fp);
756
757 NEXT (0);
758 }
759
760
761 \f
762
763 /*
764 * Specialized call stubs
765 */
766
767 /* subr-call ptr-idx:24
768 *
769 * Call a subr, passing all locals in this frame as arguments. Fetch
770 * the foreign pointer from PTR-IDX, a free variable. Return from the
771 * calling frame. This instruction is part of the trampolines
772 * created in gsubr.c, and is not generated by the compiler.
773 */
774 VM_DEFINE_OP (10, subr_call, "subr-call", OP1 (U8_U24))
775 {
776 scm_t_uint32 ptr_idx;
777 SCM pointer, ret;
778 SCM (*subr)();
779
780 UNPACK_24 (op, ptr_idx);
781
782 pointer = SCM_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (0), ptr_idx);
783 subr = SCM_POINTER_VALUE (pointer);
784
785 SYNC_IP ();
786
787 switch (FRAME_LOCALS_COUNT_FROM (1))
788 {
789 case 0:
790 ret = subr ();
791 break;
792 case 1:
793 ret = subr (fp[1]);
794 break;
795 case 2:
796 ret = subr (fp[1], fp[2]);
797 break;
798 case 3:
799 ret = subr (fp[1], fp[2], fp[3]);
800 break;
801 case 4:
802 ret = subr (fp[1], fp[2], fp[3], fp[4]);
803 break;
804 case 5:
805 ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5]);
806 break;
807 case 6:
808 ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5], fp[6]);
809 break;
810 case 7:
811 ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5], fp[6], fp[7]);
812 break;
813 case 8:
814 ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5], fp[6], fp[7], fp[8]);
815 break;
816 case 9:
817 ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5], fp[6], fp[7], fp[8], fp[9]);
818 break;
819 case 10:
820 ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5], fp[6], fp[7], fp[8], fp[9], fp[10]);
821 break;
822 default:
823 abort ();
824 }
825
826 CACHE_FP ();
827
828 if (SCM_UNLIKELY (SCM_VALUESP (ret)))
829 /* multiple values returned to continuation */
830 RETURN_VALUE_LIST (scm_struct_ref (ret, SCM_INUM0));
831 else
832 RETURN_ONE_VALUE (ret);
833 }
834
835 /* foreign-call cif-idx:12 ptr-idx:12
836 *
837 * Call a foreign function. Fetch the CIF and foreign pointer from
838 * CIF-IDX and PTR-IDX, both free variables. Return from the calling
839 * frame. Arguments are taken from the stack. This instruction is
840 * part of the trampolines created by the FFI, and is not generated by
841 * the compiler.
842 */
843 VM_DEFINE_OP (11, foreign_call, "foreign-call", OP1 (U8_U12_U12))
844 {
845 scm_t_uint16 cif_idx, ptr_idx;
846 SCM closure, cif, pointer, ret;
847
848 UNPACK_12_12 (op, cif_idx, ptr_idx);
849
850 closure = LOCAL_REF (0);
851 cif = SCM_PROGRAM_FREE_VARIABLE_REF (closure, cif_idx);
852 pointer = SCM_PROGRAM_FREE_VARIABLE_REF (closure, ptr_idx);
853
854 SYNC_IP ();
855
856 // FIXME: separate args
857 ret = scm_i_foreign_call (scm_inline_cons (thread, cif, pointer),
858 LOCAL_ADDRESS (1));
859
860 CACHE_FP ();
861
862 if (SCM_UNLIKELY (SCM_VALUESP (ret)))
863 /* multiple values returned to continuation */
864 RETURN_VALUE_LIST (scm_struct_ref (ret, SCM_INUM0));
865 else
866 RETURN_ONE_VALUE (ret);
867 }
868
869 /* continuation-call contregs:24
870 *
871 * Return to a continuation, nonlocally. The arguments to the
872 * continuation are taken from the stack. CONTREGS is a free variable
873 * containing the reified continuation. This instruction is part of
874 * the implementation of undelimited continuations, and is not
875 * generated by the compiler.
876 */
877 VM_DEFINE_OP (12, continuation_call, "continuation-call", OP1 (U8_U24))
878 {
879 SCM contregs;
880 scm_t_uint32 contregs_idx;
881
882 UNPACK_24 (op, contregs_idx);
883
884 contregs =
885 SCM_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (0), contregs_idx);
886
887 SYNC_IP ();
888 scm_i_check_continuation (contregs);
889 vm_return_to_continuation (scm_i_contregs_vp (contregs),
890 scm_i_contregs_vm_cont (contregs),
891 FRAME_LOCALS_COUNT_FROM (1),
892 LOCAL_ADDRESS (1));
893 scm_i_reinstate_continuation (contregs);
894
895 /* no NEXT */
896 abort ();
897 }
898
899 /* compose-continuation cont:24
900 *
901 * Compose a partial continution with the current continuation. The
902 * arguments to the continuation are taken from the stack. CONT is a
903 * free variable containing the reified continuation. This
904 * instruction is part of the implementation of partial continuations,
905 * and is not generated by the compiler.
906 */
907 VM_DEFINE_OP (13, compose_continuation, "compose-continuation", OP1 (U8_U24))
908 {
909 SCM vmcont;
910 scm_t_uint32 cont_idx;
911
912 UNPACK_24 (op, cont_idx);
913 vmcont = SCM_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (0), cont_idx);
914
915 SYNC_IP ();
916 VM_ASSERT (SCM_VM_CONT_REWINDABLE_P (vmcont),
917 vm_error_continuation_not_rewindable (vmcont));
918 vm_reinstate_partial_continuation (vp, vmcont, FRAME_LOCALS_COUNT_FROM (1),
919 LOCAL_ADDRESS (1),
920 &thread->dynstack,
921 registers);
922 CACHE_REGISTER ();
923 NEXT (0);
924 }
925
926 /* tail-apply _:24
927 *
928 * Tail-apply the procedure in local slot 0 to the rest of the
929 * arguments. This instruction is part of the implementation of
930 * `apply', and is not generated by the compiler.
931 */
932 VM_DEFINE_OP (14, tail_apply, "tail-apply", OP1 (U8_X24))
933 {
934 int i, list_idx, list_len, nlocals;
935 SCM list;
936
937 VM_HANDLE_INTERRUPTS;
938
939 nlocals = FRAME_LOCALS_COUNT ();
940 // At a minimum, there should be apply, f, and the list.
941 VM_ASSERT (nlocals >= 3, abort ());
942 list_idx = nlocals - 1;
943 list = LOCAL_REF (list_idx);
944 list_len = scm_ilength (list);
945
946 VM_ASSERT (list_len >= 0, vm_error_apply_to_non_list (list));
947
948 nlocals = nlocals - 2 + list_len;
949 ALLOC_FRAME (nlocals);
950
951 for (i = 1; i < list_idx; i++)
952 LOCAL_SET (i - 1, LOCAL_REF (i));
953
954 /* Null out these slots, just in case there are less than 2 elements
955 in the list. */
956 LOCAL_SET (list_idx - 1, SCM_UNDEFINED);
957 LOCAL_SET (list_idx, SCM_UNDEFINED);
958
959 for (i = 0; i < list_len; i++, list = SCM_CDR (list))
960 LOCAL_SET (list_idx - 1 + i, SCM_CAR (list));
961
962 APPLY_HOOK ();
963
964 if (SCM_UNLIKELY (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp))))
965 goto apply;
966
967 ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp));
968 NEXT (0);
969 }
970
971 /* call/cc _:24
972 *
973 * Capture the current continuation, and tail-apply the procedure in
974 * local slot 1 to it. This instruction is part of the implementation
975 * of `call/cc', and is not generated by the compiler.
976 */
977 VM_DEFINE_OP (15, call_cc, "call/cc", OP1 (U8_X24))
978 {
979 SCM vm_cont, cont;
980 scm_t_dynstack *dynstack;
981 int first;
982
983 VM_HANDLE_INTERRUPTS;
984
985 SYNC_IP ();
986 dynstack = scm_dynstack_capture_all (&thread->dynstack);
987 vm_cont = scm_i_vm_capture_stack (vp->stack_base,
988 SCM_FRAME_DYNAMIC_LINK (fp),
989 SCM_FRAME_PREVIOUS_SP (fp),
990 SCM_FRAME_RETURN_ADDRESS (fp),
991 dynstack,
992 0);
993 /* FIXME: Seems silly to capture the registers here, when they are
994 already captured in the registers local, which here we are
995 copying out to the heap; and likewise, the setjmp(&registers)
996 code already has the non-local return handler. But oh
997 well! */
998 cont = scm_i_make_continuation (&first, vp, vm_cont);
999
1000 if (first)
1001 {
1002 LOCAL_SET (0, LOCAL_REF (1));
1003 LOCAL_SET (1, cont);
1004 RESET_FRAME (2);
1005
1006 APPLY_HOOK ();
1007
1008 if (SCM_UNLIKELY (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp))))
1009 goto apply;
1010
1011 ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp));
1012 NEXT (0);
1013 }
1014 else
1015 {
1016 CACHE_REGISTER ();
1017 ABORT_CONTINUATION_HOOK ();
1018 NEXT (0);
1019 }
1020 }
1021
1022 /* abort _:24
1023 *
1024 * Abort to a prompt handler. The tag is expected in r1, and the rest
1025 * of the values in the frame are returned to the prompt handler.
1026 * This corresponds to a tail application of abort-to-prompt.
1027 */
1028 VM_DEFINE_OP (16, abort, "abort", OP1 (U8_X24))
1029 {
1030 scm_t_uint32 nlocals = FRAME_LOCALS_COUNT ();
1031
1032 ASSERT (nlocals >= 2);
1033 /* FIXME: Really we should capture the caller's registers. Until
1034 then, manually advance the IP so that when the prompt resumes,
1035 it continues with the next instruction. */
1036 ip++;
1037 SYNC_IP ();
1038 vm_abort (vp, LOCAL_REF (1), nlocals - 2, LOCAL_ADDRESS (2),
1039 SCM_EOL, LOCAL_ADDRESS (0), registers);
1040
1041 /* vm_abort should not return */
1042 abort ();
1043 }
1044
1045 /* builtin-ref dst:12 idx:12
1046 *
1047 * Load a builtin stub by index into DST.
1048 */
1049 VM_DEFINE_OP (17, builtin_ref, "builtin-ref", OP1 (U8_U12_U12) | OP_DST)
1050 {
1051 scm_t_uint16 dst, idx;
1052
1053 UNPACK_12_12 (op, dst, idx);
1054 LOCAL_SET (dst, scm_vm_builtin_ref (idx));
1055
1056 NEXT (1);
1057 }
1058
1059
1060 \f
1061
1062 /*
1063 * Function prologues
1064 */
1065
1066 /* br-if-nargs-ne expected:24 _:8 offset:24
1067 * br-if-nargs-lt expected:24 _:8 offset:24
1068 * br-if-nargs-gt expected:24 _:8 offset:24
1069 *
1070 * If the number of actual arguments is not equal, less than, or greater
1071 * than EXPECTED, respectively, add OFFSET, a signed 24-bit number, to
1072 * the current instruction pointer.
1073 */
1074 VM_DEFINE_OP (18, br_if_nargs_ne, "br-if-nargs-ne", OP2 (U8_U24, X8_L24))
1075 {
1076 BR_NARGS (!=);
1077 }
1078 VM_DEFINE_OP (19, br_if_nargs_lt, "br-if-nargs-lt", OP2 (U8_U24, X8_L24))
1079 {
1080 BR_NARGS (<);
1081 }
1082 VM_DEFINE_OP (20, br_if_nargs_gt, "br-if-nargs-gt", OP2 (U8_U24, X8_L24))
1083 {
1084 BR_NARGS (>);
1085 }
1086
1087 /* assert-nargs-ee expected:24
1088 * assert-nargs-ge expected:24
1089 * assert-nargs-le expected:24
1090 *
1091 * If the number of actual arguments is not ==, >=, or <= EXPECTED,
1092 * respectively, signal an error.
1093 */
1094 VM_DEFINE_OP (21, assert_nargs_ee, "assert-nargs-ee", OP1 (U8_U24))
1095 {
1096 scm_t_uint32 expected;
1097 UNPACK_24 (op, expected);
1098 VM_ASSERT (FRAME_LOCALS_COUNT () == expected,
1099 vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp)));
1100 NEXT (1);
1101 }
1102 VM_DEFINE_OP (22, assert_nargs_ge, "assert-nargs-ge", OP1 (U8_U24))
1103 {
1104 scm_t_uint32 expected;
1105 UNPACK_24 (op, expected);
1106 VM_ASSERT (FRAME_LOCALS_COUNT () >= expected,
1107 vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp)));
1108 NEXT (1);
1109 }
1110 VM_DEFINE_OP (23, assert_nargs_le, "assert-nargs-le", OP1 (U8_U24))
1111 {
1112 scm_t_uint32 expected;
1113 UNPACK_24 (op, expected);
1114 VM_ASSERT (FRAME_LOCALS_COUNT () <= expected,
1115 vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp)));
1116 NEXT (1);
1117 }
1118
1119 /* alloc-frame nlocals:24
1120 *
1121 * Ensure that there is space on the stack for NLOCALS local variables,
1122 * setting them all to SCM_UNDEFINED, except those nargs values that
1123 * were passed as arguments and procedure.
1124 */
1125 VM_DEFINE_OP (24, alloc_frame, "alloc-frame", OP1 (U8_U24))
1126 {
1127 scm_t_uint32 nlocals, nargs;
1128 UNPACK_24 (op, nlocals);
1129
1130 nargs = FRAME_LOCALS_COUNT ();
1131 ALLOC_FRAME (nlocals);
1132 while (nlocals-- > nargs)
1133 LOCAL_SET (nlocals, SCM_UNDEFINED);
1134
1135 NEXT (1);
1136 }
1137
1138 /* reset-frame nlocals:24
1139 *
1140 * Like alloc-frame, but doesn't check that the stack is big enough.
1141 * Used to reset the frame size to something less than the size that
1142 * was previously set via alloc-frame.
1143 */
1144 VM_DEFINE_OP (25, reset_frame, "reset-frame", OP1 (U8_U24))
1145 {
1146 scm_t_uint32 nlocals;
1147 UNPACK_24 (op, nlocals);
1148 RESET_FRAME (nlocals);
1149 NEXT (1);
1150 }
1151
1152 /* assert-nargs-ee/locals expected:12 nlocals:12
1153 *
1154 * Equivalent to a sequence of assert-nargs-ee and reserve-locals. The
1155 * number of locals reserved is EXPECTED + NLOCALS.
1156 */
1157 VM_DEFINE_OP (26, assert_nargs_ee_locals, "assert-nargs-ee/locals", OP1 (U8_U12_U12))
1158 {
1159 scm_t_uint16 expected, nlocals;
1160 UNPACK_12_12 (op, expected, nlocals);
1161 VM_ASSERT (FRAME_LOCALS_COUNT () == expected,
1162 vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp)));
1163 ALLOC_FRAME (expected + nlocals);
1164 while (nlocals--)
1165 LOCAL_SET (expected + nlocals, SCM_UNDEFINED);
1166
1167 NEXT (1);
1168 }
1169
1170 /* br-if-npos-gt nreq:24 _:8 npos:24 _:8 offset:24
1171 *
1172 * Find the first positional argument after NREQ. If it is greater
1173 * than NPOS, jump to OFFSET.
1174 *
1175 * This instruction is only emitted for functions with multiple
1176 * clauses, and an earlier clause has keywords and no rest arguments.
1177 * See "Case-lambda" in the manual, for more on how case-lambda
1178 * chooses the clause to apply.
1179 */
1180 VM_DEFINE_OP (27, br_if_npos_gt, "br-if-npos-gt", OP3 (U8_U24, X8_U24, X8_L24))
1181 {
1182 scm_t_uint32 nreq, npos;
1183
1184 UNPACK_24 (op, nreq);
1185 UNPACK_24 (ip[1], npos);
1186
1187 /* We can only have too many positionals if there are more
1188 arguments than NPOS. */
1189 if (FRAME_LOCALS_COUNT() > npos)
1190 {
1191 scm_t_uint32 n;
1192 for (n = nreq; n < npos; n++)
1193 if (scm_is_keyword (LOCAL_REF (n)))
1194 break;
1195 if (n == npos && !scm_is_keyword (LOCAL_REF (n)))
1196 {
1197 scm_t_int32 offset = ip[2];
1198 offset >>= 8; /* Sign-extending shift. */
1199 NEXT (offset);
1200 }
1201 }
1202 NEXT (3);
1203 }
1204
1205 /* bind-kwargs nreq:24 flags:8 nreq-and-opt:24 _:8 ntotal:24 kw-offset:32
1206 *
1207 * flags := allow-other-keys:1 has-rest:1 _:6
1208 *
1209 * Find the last positional argument, and shuffle all the rest above
1210 * NTOTAL. Initialize the intervening locals to SCM_UNDEFINED. Then
1211 * load the constant at KW-OFFSET words from the current IP, and use it
1212 * to bind keyword arguments. If HAS-REST, collect all shuffled
1213 * arguments into a list, and store it in NREQ-AND-OPT. Finally, clear
1214 * the arguments that we shuffled up.
1215 *
1216 * A macro-mega-instruction.
1217 */
1218 VM_DEFINE_OP (28, bind_kwargs, "bind-kwargs", OP4 (U8_U24, U8_U24, X8_U24, N32))
1219 {
1220 scm_t_uint32 nreq, nreq_and_opt, ntotal, npositional, nkw, n, nargs;
1221 scm_t_int32 kw_offset;
1222 scm_t_bits kw_bits;
1223 SCM kw;
1224 char allow_other_keys, has_rest;
1225
1226 UNPACK_24 (op, nreq);
1227 allow_other_keys = ip[1] & 0x1;
1228 has_rest = ip[1] & 0x2;
1229 UNPACK_24 (ip[1], nreq_and_opt);
1230 UNPACK_24 (ip[2], ntotal);
1231 kw_offset = ip[3];
1232 kw_bits = (scm_t_bits) (ip + kw_offset);
1233 VM_ASSERT (!(kw_bits & 0x7), abort());
1234 kw = SCM_PACK (kw_bits);
1235
1236 nargs = FRAME_LOCALS_COUNT ();
1237
1238 /* look in optionals for first keyword or last positional */
1239 /* starting after the last required positional arg */
1240 npositional = nreq;
1241 while (/* while we have args */
1242 npositional < nargs
1243 /* and we still have positionals to fill */
1244 && npositional < nreq_and_opt
1245 /* and we haven't reached a keyword yet */
1246 && !scm_is_keyword (LOCAL_REF (npositional)))
1247 /* bind this optional arg (by leaving it in place) */
1248 npositional++;
1249 nkw = nargs - npositional;
1250 /* shuffle non-positional arguments above ntotal */
1251 ALLOC_FRAME (ntotal + nkw);
1252 n = nkw;
1253 while (n--)
1254 LOCAL_SET (ntotal + n, LOCAL_REF (npositional + n));
1255 /* and fill optionals & keyword args with SCM_UNDEFINED */
1256 n = npositional;
1257 while (n < ntotal)
1258 LOCAL_SET (n++, SCM_UNDEFINED);
1259
1260 VM_ASSERT (has_rest || (nkw % 2) == 0,
1261 vm_error_kwargs_length_not_even (SCM_FRAME_PROGRAM (fp)));
1262
1263 /* Now bind keywords, in the order given. */
1264 for (n = 0; n < nkw; n++)
1265 if (scm_is_keyword (LOCAL_REF (ntotal + n)))
1266 {
1267 SCM walk;
1268 for (walk = kw; scm_is_pair (walk); walk = SCM_CDR (walk))
1269 if (scm_is_eq (SCM_CAAR (walk), LOCAL_REF (ntotal + n)))
1270 {
1271 SCM si = SCM_CDAR (walk);
1272 LOCAL_SET (SCM_I_INUMP (si) ? SCM_I_INUM (si) : scm_to_uint32 (si),
1273 LOCAL_REF (ntotal + n + 1));
1274 break;
1275 }
1276 VM_ASSERT (scm_is_pair (walk) || allow_other_keys,
1277 vm_error_kwargs_unrecognized_keyword (SCM_FRAME_PROGRAM (fp),
1278 LOCAL_REF (ntotal + n)));
1279 n++;
1280 }
1281 else
1282 VM_ASSERT (has_rest, vm_error_kwargs_invalid_keyword (SCM_FRAME_PROGRAM (fp),
1283 LOCAL_REF (ntotal + n)));
1284
1285 if (has_rest)
1286 {
1287 SCM rest = SCM_EOL;
1288 n = nkw;
1289 while (n--)
1290 rest = scm_inline_cons (thread, LOCAL_REF (ntotal + n), rest);
1291 LOCAL_SET (nreq_and_opt, rest);
1292 }
1293
1294 RESET_FRAME (ntotal);
1295
1296 NEXT (4);
1297 }
1298
1299 /* bind-rest dst:24
1300 *
1301 * Collect any arguments at or above DST into a list, and store that
1302 * list at DST.
1303 */
1304 VM_DEFINE_OP (29, bind_rest, "bind-rest", OP1 (U8_U24) | OP_DST)
1305 {
1306 scm_t_uint32 dst, nargs;
1307 SCM rest = SCM_EOL;
1308
1309 UNPACK_24 (op, dst);
1310 nargs = FRAME_LOCALS_COUNT ();
1311
1312 if (nargs <= dst)
1313 {
1314 ALLOC_FRAME (dst + 1);
1315 while (nargs < dst)
1316 LOCAL_SET (nargs++, SCM_UNDEFINED);
1317 }
1318 else
1319 {
1320 while (nargs-- > dst)
1321 {
1322 rest = scm_inline_cons (thread, LOCAL_REF (nargs), rest);
1323 LOCAL_SET (nargs, SCM_UNDEFINED);
1324 }
1325
1326 RESET_FRAME (dst + 1);
1327 }
1328
1329 LOCAL_SET (dst, rest);
1330
1331 NEXT (1);
1332 }
1333
1334
1335 \f
1336
1337 /*
1338 * Branching instructions
1339 */
1340
1341 /* br offset:24
1342 *
1343 * Add OFFSET, a signed 24-bit number, to the current instruction
1344 * pointer.
1345 */
1346 VM_DEFINE_OP (30, br, "br", OP1 (U8_L24))
1347 {
1348 scm_t_int32 offset = op;
1349 offset >>= 8; /* Sign-extending shift. */
1350 if (offset <= 0)
1351 VM_HANDLE_INTERRUPTS;
1352 NEXT (offset);
1353 }
1354
1355 /* br-if-true test:24 invert:1 _:7 offset:24
1356 *
1357 * If the value in TEST is true for the purposes of Scheme, add
1358 * OFFSET, a signed 24-bit number, to the current instruction pointer.
1359 */
1360 VM_DEFINE_OP (31, br_if_true, "br-if-true", OP2 (U8_U24, B1_X7_L24))
1361 {
1362 BR_UNARY (x, scm_is_true (x));
1363 }
1364
1365 /* br-if-null test:24 invert:1 _:7 offset:24
1366 *
1367 * If the value in TEST is the end-of-list or Lisp nil, add OFFSET, a
1368 * signed 24-bit number, to the current instruction pointer.
1369 */
1370 VM_DEFINE_OP (32, br_if_null, "br-if-null", OP2 (U8_U24, B1_X7_L24))
1371 {
1372 BR_UNARY (x, scm_is_null (x));
1373 }
1374
1375 /* br-if-nil test:24 invert:1 _:7 offset:24
1376 *
1377 * If the value in TEST is false to Lisp, add OFFSET, a signed 24-bit
1378 * number, to the current instruction pointer.
1379 */
1380 VM_DEFINE_OP (33, br_if_nil, "br-if-nil", OP2 (U8_U24, B1_X7_L24))
1381 {
1382 BR_UNARY (x, scm_is_lisp_false (x));
1383 }
1384
1385 /* br-if-pair test:24 invert:1 _:7 offset:24
1386 *
1387 * If the value in TEST is a pair, add OFFSET, a signed 24-bit number,
1388 * to the current instruction pointer.
1389 */
1390 VM_DEFINE_OP (34, br_if_pair, "br-if-pair", OP2 (U8_U24, B1_X7_L24))
1391 {
1392 BR_UNARY (x, scm_is_pair (x));
1393 }
1394
1395 /* br-if-struct test:24 invert:1 _:7 offset:24
1396 *
1397 * If the value in TEST is a struct, add OFFSET, a signed 24-bit
1398 * number, to the current instruction pointer.
1399 */
1400 VM_DEFINE_OP (35, br_if_struct, "br-if-struct", OP2 (U8_U24, B1_X7_L24))
1401 {
1402 BR_UNARY (x, SCM_STRUCTP (x));
1403 }
1404
1405 /* br-if-char test:24 invert:1 _:7 offset:24
1406 *
1407 * If the value in TEST is a char, add OFFSET, a signed 24-bit number,
1408 * to the current instruction pointer.
1409 */
1410 VM_DEFINE_OP (36, br_if_char, "br-if-char", OP2 (U8_U24, B1_X7_L24))
1411 {
1412 BR_UNARY (x, SCM_CHARP (x));
1413 }
1414
1415 /* br-if-tc7 test:24 invert:1 tc7:7 offset:24
1416 *
1417 * If the value in TEST has the TC7 given in the second word, add
1418 * OFFSET, a signed 24-bit number, to the current instruction pointer.
1419 */
1420 VM_DEFINE_OP (37, br_if_tc7, "br-if-tc7", OP2 (U8_U24, B1_U7_L24))
1421 {
1422 BR_UNARY (x, SCM_HAS_TYP7 (x, (ip[1] >> 1) & 0x7f));
1423 }
1424
1425 /* br-if-eq a:12 b:12 invert:1 _:7 offset:24
1426 *
1427 * If the value in A is eq? to the value in B, add OFFSET, a signed
1428 * 24-bit number, to the current instruction pointer.
1429 */
1430 VM_DEFINE_OP (38, br_if_eq, "br-if-eq", OP2 (U8_U12_U12, B1_X7_L24))
1431 {
1432 BR_BINARY (x, y, scm_is_eq (x, y));
1433 }
1434
1435 /* br-if-eqv a:12 b:12 invert:1 _:7 offset:24
1436 *
1437 * If the value in A is eqv? to the value in B, add OFFSET, a signed
1438 * 24-bit number, to the current instruction pointer.
1439 */
1440 VM_DEFINE_OP (39, br_if_eqv, "br-if-eqv", OP2 (U8_U12_U12, B1_X7_L24))
1441 {
1442 BR_BINARY (x, y,
1443 scm_is_eq (x, y)
1444 || (SCM_NIMP (x) && SCM_NIMP (y)
1445 && scm_is_true (scm_eqv_p (x, y))));
1446 }
1447
1448 // FIXME: remove, have compiler inline eqv test instead
1449 /* br-if-equal a:12 b:12 invert:1 _:7 offset:24
1450 *
1451 * If the value in A is equal? to the value in B, add OFFSET, a signed
1452 * 24-bit number, to the current instruction pointer.
1453 */
1454 // FIXME: Should sync_ip before calling out and cache_fp before coming
1455 // back! Another reason to remove this opcode!
1456 VM_DEFINE_OP (40, br_if_equal, "br-if-equal", OP2 (U8_U12_U12, B1_X7_L24))
1457 {
1458 BR_BINARY (x, y,
1459 scm_is_eq (x, y)
1460 || (SCM_NIMP (x) && SCM_NIMP (y)
1461 && scm_is_true (scm_equal_p (x, y))));
1462 }
1463
1464 /* br-if-= a:12 b:12 invert:1 _:7 offset:24
1465 *
1466 * If the value in A is = to the value in B, add OFFSET, a signed
1467 * 24-bit number, to the current instruction pointer.
1468 */
1469 VM_DEFINE_OP (41, br_if_ee, "br-if-=", OP2 (U8_U12_U12, B1_X7_L24))
1470 {
1471 BR_ARITHMETIC (==, scm_num_eq_p);
1472 }
1473
1474 /* br-if-< a:12 b:12 invert:1 _:7 offset:24
1475 *
1476 * If the value in A is < to the value in B, add OFFSET, a signed
1477 * 24-bit number, to the current instruction pointer.
1478 */
1479 VM_DEFINE_OP (42, br_if_lt, "br-if-<", OP2 (U8_U12_U12, B1_X7_L24))
1480 {
1481 BR_ARITHMETIC (<, scm_less_p);
1482 }
1483
1484 /* br-if-<= a:12 b:12 invert:1 _:7 offset:24
1485 *
1486 * If the value in A is <= to the value in B, add OFFSET, a signed
1487 * 24-bit number, to the current instruction pointer.
1488 */
1489 VM_DEFINE_OP (43, br_if_le, "br-if-<=", OP2 (U8_U12_U12, B1_X7_L24))
1490 {
1491 BR_ARITHMETIC (<=, scm_leq_p);
1492 }
1493
1494
1495 \f
1496
1497 /*
1498 * Lexical binding instructions
1499 */
1500
1501 /* mov dst:12 src:12
1502 *
1503 * Copy a value from one local slot to another.
1504 */
1505 VM_DEFINE_OP (44, mov, "mov", OP1 (U8_U12_U12) | OP_DST)
1506 {
1507 scm_t_uint16 dst;
1508 scm_t_uint16 src;
1509
1510 UNPACK_12_12 (op, dst, src);
1511 LOCAL_SET (dst, LOCAL_REF (src));
1512
1513 NEXT (1);
1514 }
1515
1516 /* long-mov dst:24 _:8 src:24
1517 *
1518 * Copy a value from one local slot to another.
1519 */
1520 VM_DEFINE_OP (45, long_mov, "long-mov", OP2 (U8_U24, X8_U24) | OP_DST)
1521 {
1522 scm_t_uint32 dst;
1523 scm_t_uint32 src;
1524
1525 UNPACK_24 (op, dst);
1526 UNPACK_24 (ip[1], src);
1527 LOCAL_SET (dst, LOCAL_REF (src));
1528
1529 NEXT (2);
1530 }
1531
1532 /* box dst:12 src:12
1533 *
1534 * Create a new variable holding SRC, and place it in DST.
1535 */
1536 VM_DEFINE_OP (46, box, "box", OP1 (U8_U12_U12) | OP_DST)
1537 {
1538 scm_t_uint16 dst, src;
1539 UNPACK_12_12 (op, dst, src);
1540 LOCAL_SET (dst, scm_inline_cell (thread, scm_tc7_variable,
1541 SCM_UNPACK (LOCAL_REF (src))));
1542 NEXT (1);
1543 }
1544
1545 /* box-ref dst:12 src:12
1546 *
1547 * Unpack the variable at SRC into DST, asserting that the variable is
1548 * actually bound.
1549 */
1550 VM_DEFINE_OP (47, box_ref, "box-ref", OP1 (U8_U12_U12) | OP_DST)
1551 {
1552 scm_t_uint16 dst, src;
1553 SCM var;
1554 UNPACK_12_12 (op, dst, src);
1555 var = LOCAL_REF (src);
1556 VM_ASSERT (SCM_VARIABLEP (var),
1557 vm_error_not_a_variable ("variable-ref", var));
1558 VM_ASSERT (VARIABLE_BOUNDP (var),
1559 vm_error_unbound (SCM_FRAME_PROGRAM (fp), var));
1560 LOCAL_SET (dst, VARIABLE_REF (var));
1561 NEXT (1);
1562 }
1563
1564 /* box-set! dst:12 src:12
1565 *
1566 * Set the contents of the variable at DST to SET.
1567 */
1568 VM_DEFINE_OP (48, box_set, "box-set!", OP1 (U8_U12_U12))
1569 {
1570 scm_t_uint16 dst, src;
1571 SCM var;
1572 UNPACK_12_12 (op, dst, src);
1573 var = LOCAL_REF (dst);
1574 VM_ASSERT (SCM_VARIABLEP (var),
1575 vm_error_not_a_variable ("variable-set!", var));
1576 VARIABLE_SET (var, LOCAL_REF (src));
1577 NEXT (1);
1578 }
1579
1580 /* make-closure dst:24 offset:32 _:8 nfree:24
1581 *
1582 * Make a new closure, and write it to DST. The code for the closure
1583 * will be found at OFFSET words from the current IP. OFFSET is a
1584 * signed 32-bit integer. Space for NFREE free variables will be
1585 * allocated.
1586 */
1587 VM_DEFINE_OP (49, make_closure, "make-closure", OP3 (U8_U24, L32, X8_U24) | OP_DST)
1588 {
1589 scm_t_uint32 dst, nfree, n;
1590 scm_t_int32 offset;
1591 SCM closure;
1592
1593 UNPACK_24 (op, dst);
1594 offset = ip[1];
1595 UNPACK_24 (ip[2], nfree);
1596
1597 // FIXME: Assert range of nfree?
1598 closure = scm_inline_words (thread, scm_tc7_program | (nfree << 16),
1599 nfree + 2);
1600 SCM_SET_CELL_WORD_1 (closure, ip + offset);
1601 // FIXME: Elide these initializations?
1602 for (n = 0; n < nfree; n++)
1603 SCM_PROGRAM_FREE_VARIABLE_SET (closure, n, SCM_BOOL_F);
1604 LOCAL_SET (dst, closure);
1605 NEXT (3);
1606 }
1607
1608 /* free-ref dst:12 src:12 _:8 idx:24
1609 *
1610 * Load free variable IDX from the closure SRC into local slot DST.
1611 */
1612 VM_DEFINE_OP (50, free_ref, "free-ref", OP2 (U8_U12_U12, X8_U24) | OP_DST)
1613 {
1614 scm_t_uint16 dst, src;
1615 scm_t_uint32 idx;
1616 UNPACK_12_12 (op, dst, src);
1617 UNPACK_24 (ip[1], idx);
1618 /* CHECK_FREE_VARIABLE (src); */
1619 LOCAL_SET (dst, SCM_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (src), idx));
1620 NEXT (2);
1621 }
1622
1623 /* free-set! dst:12 src:12 _:8 idx:24
1624 *
1625 * Set free variable IDX from the closure DST to SRC.
1626 */
1627 VM_DEFINE_OP (51, free_set, "free-set!", OP2 (U8_U12_U12, X8_U24))
1628 {
1629 scm_t_uint16 dst, src;
1630 scm_t_uint32 idx;
1631 UNPACK_12_12 (op, dst, src);
1632 UNPACK_24 (ip[1], idx);
1633 /* CHECK_FREE_VARIABLE (src); */
1634 SCM_PROGRAM_FREE_VARIABLE_SET (LOCAL_REF (dst), idx, LOCAL_REF (src));
1635 NEXT (2);
1636 }
1637
1638
1639 \f
1640
1641 /*
1642 * Immediates and statically allocated non-immediates
1643 */
1644
1645 /* make-short-immediate dst:8 low-bits:16
1646 *
1647 * Make an immediate whose low bits are LOW-BITS, and whose top bits are
1648 * 0.
1649 */
1650 VM_DEFINE_OP (52, make_short_immediate, "make-short-immediate", OP1 (U8_U8_I16) | OP_DST)
1651 {
1652 scm_t_uint8 dst;
1653 scm_t_bits val;
1654
1655 UNPACK_8_16 (op, dst, val);
1656 LOCAL_SET (dst, SCM_PACK (val));
1657 NEXT (1);
1658 }
1659
1660 /* make-long-immediate dst:24 low-bits:32
1661 *
1662 * Make an immediate whose low bits are LOW-BITS, and whose top bits are
1663 * 0.
1664 */
1665 VM_DEFINE_OP (53, make_long_immediate, "make-long-immediate", OP2 (U8_U24, I32) | OP_DST)
1666 {
1667 scm_t_uint32 dst;
1668 scm_t_bits val;
1669
1670 UNPACK_24 (op, dst);
1671 val = ip[1];
1672 LOCAL_SET (dst, SCM_PACK (val));
1673 NEXT (2);
1674 }
1675
1676 /* make-long-long-immediate dst:24 high-bits:32 low-bits:32
1677 *
1678 * Make an immediate with HIGH-BITS and LOW-BITS.
1679 */
1680 VM_DEFINE_OP (54, make_long_long_immediate, "make-long-long-immediate", OP3 (U8_U24, A32, B32) | OP_DST)
1681 {
1682 scm_t_uint32 dst;
1683 scm_t_bits val;
1684
1685 UNPACK_24 (op, dst);
1686 #if SIZEOF_SCM_T_BITS > 4
1687 val = ip[1];
1688 val <<= 32;
1689 val |= ip[2];
1690 #else
1691 ASSERT (ip[1] == 0);
1692 val = ip[2];
1693 #endif
1694 LOCAL_SET (dst, SCM_PACK (val));
1695 NEXT (3);
1696 }
1697
1698 /* make-non-immediate dst:24 offset:32
1699 *
1700 * Load a pointer to statically allocated memory into DST. The
1701 * object's memory is will be found OFFSET 32-bit words away from the
1702 * current instruction pointer. OFFSET is a signed value. The
1703 * intention here is that the compiler would produce an object file
1704 * containing the words of a non-immediate object, and this
1705 * instruction creates a pointer to that memory, effectively
1706 * resurrecting that object.
1707 *
1708 * Whether the object is mutable or immutable depends on where it was
1709 * allocated by the compiler, and loaded by the loader.
1710 */
1711 VM_DEFINE_OP (55, make_non_immediate, "make-non-immediate", OP2 (U8_U24, N32) | OP_DST)
1712 {
1713 scm_t_uint32 dst;
1714 scm_t_int32 offset;
1715 scm_t_uint32* loc;
1716 scm_t_bits unpacked;
1717
1718 UNPACK_24 (op, dst);
1719 offset = ip[1];
1720 loc = ip + offset;
1721 unpacked = (scm_t_bits) loc;
1722
1723 VM_ASSERT (!(unpacked & 0x7), abort());
1724
1725 LOCAL_SET (dst, SCM_PACK (unpacked));
1726
1727 NEXT (2);
1728 }
1729
1730 /* static-ref dst:24 offset:32
1731 *
1732 * Load a SCM value into DST. The SCM value will be fetched from
1733 * memory, OFFSET 32-bit words away from the current instruction
1734 * pointer. OFFSET is a signed value.
1735 *
1736 * The intention is for this instruction to be used to load constants
1737 * that the compiler is unable to statically allocate, like symbols.
1738 * These values would be initialized when the object file loads.
1739 */
1740 VM_DEFINE_OP (56, static_ref, "static-ref", OP2 (U8_U24, S32) | OP_DST)
1741 {
1742 scm_t_uint32 dst;
1743 scm_t_int32 offset;
1744 scm_t_uint32* loc;
1745 scm_t_uintptr loc_bits;
1746
1747 UNPACK_24 (op, dst);
1748 offset = ip[1];
1749 loc = ip + offset;
1750 loc_bits = (scm_t_uintptr) loc;
1751 VM_ASSERT (ALIGNED_P (loc, SCM), abort());
1752
1753 LOCAL_SET (dst, *((SCM *) loc_bits));
1754
1755 NEXT (2);
1756 }
1757
1758 /* static-set! src:24 offset:32
1759 *
1760 * Store a SCM value into memory, OFFSET 32-bit words away from the
1761 * current instruction pointer. OFFSET is a signed value.
1762 */
1763 VM_DEFINE_OP (57, static_set, "static-set!", OP2 (U8_U24, LO32))
1764 {
1765 scm_t_uint32 src;
1766 scm_t_int32 offset;
1767 scm_t_uint32* loc;
1768
1769 UNPACK_24 (op, src);
1770 offset = ip[1];
1771 loc = ip + offset;
1772 VM_ASSERT (ALIGNED_P (loc, SCM), abort());
1773
1774 *((SCM *) loc) = LOCAL_REF (src);
1775
1776 NEXT (2);
1777 }
1778
1779 /* static-patch! _:24 dst-offset:32 src-offset:32
1780 *
1781 * Patch a pointer at DST-OFFSET to point to SRC-OFFSET. Both offsets
1782 * are signed 32-bit values, indicating a memory address as a number
1783 * of 32-bit words away from the current instruction pointer.
1784 */
1785 VM_DEFINE_OP (58, static_patch, "static-patch!", OP3 (U8_X24, LO32, L32))
1786 {
1787 scm_t_int32 dst_offset, src_offset;
1788 void *src;
1789 void** dst_loc;
1790
1791 dst_offset = ip[1];
1792 src_offset = ip[2];
1793
1794 dst_loc = (void **) (ip + dst_offset);
1795 src = ip + src_offset;
1796 VM_ASSERT (ALIGNED_P (dst_loc, void*), abort());
1797
1798 *dst_loc = src;
1799
1800 NEXT (3);
1801 }
1802
1803 \f
1804
1805 /*
1806 * Mutable top-level bindings
1807 */
1808
1809 /* There are three slightly different ways to resolve toplevel
1810 variables.
1811
1812 1. A toplevel reference outside of a function. These need to be
1813 looked up when the expression is evaluated -- no later, and no
1814 before. They are looked up relative to the module that is
1815 current when the expression is evaluated. For example:
1816
1817 (if (foo) a b)
1818
1819 The "resolve" instruction resolves the variable (box), and then
1820 access is via box-ref or box-set!.
1821
1822 2. A toplevel reference inside a function. These are looked up
1823 relative to the module that was current when the function was
1824 defined. Unlike code at the toplevel, which is usually run only
1825 once, these bindings benefit from memoized lookup, in which the
1826 variable resulting from the lookup is cached in the function.
1827
1828 (lambda () (if (foo) a b))
1829
1830 The toplevel-box instruction is equivalent to "resolve", but
1831 caches the resulting variable in statically allocated memory.
1832
1833 3. A reference to an identifier with respect to a particular
1834 module. This can happen for primitive references, and
1835 references residualized by macro expansions. These can always
1836 be cached. Use module-box for these.
1837 */
1838
1839 /* current-module dst:24
1840 *
1841 * Store the current module in DST.
1842 */
1843 VM_DEFINE_OP (59, current_module, "current-module", OP1 (U8_U24) | OP_DST)
1844 {
1845 scm_t_uint32 dst;
1846
1847 UNPACK_24 (op, dst);
1848
1849 SYNC_IP ();
1850 LOCAL_SET (dst, scm_current_module ());
1851
1852 NEXT (1);
1853 }
1854
1855 /* resolve dst:24 bound?:1 _:7 sym:24
1856 *
1857 * Resolve SYM in the current module, and place the resulting variable
1858 * in DST.
1859 */
1860 VM_DEFINE_OP (60, resolve, "resolve", OP2 (U8_U24, B1_X7_U24) | OP_DST)
1861 {
1862 scm_t_uint32 dst;
1863 scm_t_uint32 sym;
1864 SCM var;
1865
1866 UNPACK_24 (op, dst);
1867 UNPACK_24 (ip[1], sym);
1868
1869 SYNC_IP ();
1870 var = scm_lookup (LOCAL_REF (sym));
1871 CACHE_FP ();
1872 if (ip[1] & 0x1)
1873 VM_ASSERT (VARIABLE_BOUNDP (var),
1874 vm_error_unbound (fp[0], LOCAL_REF (sym)));
1875 LOCAL_SET (dst, var);
1876
1877 NEXT (2);
1878 }
1879
1880 /* define! sym:12 val:12
1881 *
1882 * Look up a binding for SYM in the current module, creating it if
1883 * necessary. Set its value to VAL.
1884 */
1885 VM_DEFINE_OP (61, define, "define!", OP1 (U8_U12_U12))
1886 {
1887 scm_t_uint16 sym, val;
1888 UNPACK_12_12 (op, sym, val);
1889 SYNC_IP ();
1890 scm_define (LOCAL_REF (sym), LOCAL_REF (val));
1891 CACHE_FP ();
1892 NEXT (1);
1893 }
1894
1895 /* toplevel-box dst:24 var-offset:32 mod-offset:32 sym-offset:32 bound?:1 _:31
1896 *
1897 * Load a SCM value. The SCM value will be fetched from memory,
1898 * VAR-OFFSET 32-bit words away from the current instruction pointer.
1899 * VAR-OFFSET is a signed value. Up to here, toplevel-box is like
1900 * static-ref.
1901 *
1902 * Then, if the loaded value is a variable, it is placed in DST, and control
1903 * flow continues.
1904 *
1905 * Otherwise, we have to resolve the variable. In that case we load
1906 * the module from MOD-OFFSET, just as we loaded the variable.
1907 * Usually the module gets set when the closure is created. The name
1908 * is an offset to a symbol.
1909 *
1910 * We use the module and the symbol to resolve the variable, placing it in
1911 * DST, and caching the resolved variable so that we will hit the cache next
1912 * time.
1913 */
1914 VM_DEFINE_OP (62, toplevel_box, "toplevel-box", OP5 (U8_U24, S32, S32, N32, B1_X31) | OP_DST)
1915 {
1916 scm_t_uint32 dst;
1917 scm_t_int32 var_offset;
1918 scm_t_uint32* var_loc_u32;
1919 SCM *var_loc;
1920 SCM var;
1921
1922 UNPACK_24 (op, dst);
1923 var_offset = ip[1];
1924 var_loc_u32 = ip + var_offset;
1925 VM_ASSERT (ALIGNED_P (var_loc_u32, SCM), abort());
1926 var_loc = (SCM *) var_loc_u32;
1927 var = *var_loc;
1928
1929 if (SCM_UNLIKELY (!SCM_VARIABLEP (var)))
1930 {
1931 SCM mod, sym;
1932 scm_t_int32 mod_offset = ip[2]; /* signed */
1933 scm_t_int32 sym_offset = ip[3]; /* signed */
1934 scm_t_uint32 *mod_loc = ip + mod_offset;
1935 scm_t_uint32 *sym_loc = ip + sym_offset;
1936
1937 SYNC_IP ();
1938
1939 VM_ASSERT (ALIGNED_P (mod_loc, SCM), abort());
1940 VM_ASSERT (ALIGNED_P (sym_loc, SCM), abort());
1941
1942 mod = *((SCM *) mod_loc);
1943 sym = *((SCM *) sym_loc);
1944
1945 /* If the toplevel scope was captured before modules were
1946 booted, use the root module. */
1947 if (scm_is_false (mod))
1948 mod = scm_the_root_module ();
1949
1950 var = scm_module_lookup (mod, sym);
1951 CACHE_FP ();
1952 if (ip[4] & 0x1)
1953 VM_ASSERT (VARIABLE_BOUNDP (var), vm_error_unbound (fp[0], sym));
1954
1955 *var_loc = var;
1956 }
1957
1958 LOCAL_SET (dst, var);
1959 NEXT (5);
1960 }
1961
1962 /* module-box dst:24 var-offset:32 mod-offset:32 sym-offset:32 bound?:1 _:31
1963 *
1964 * Like toplevel-box, except MOD-OFFSET points at the name of a module
1965 * instead of the module itself.
1966 */
1967 VM_DEFINE_OP (63, module_box, "module-box", OP5 (U8_U24, S32, N32, N32, B1_X31) | OP_DST)
1968 {
1969 scm_t_uint32 dst;
1970 scm_t_int32 var_offset;
1971 scm_t_uint32* var_loc_u32;
1972 SCM *var_loc;
1973 SCM var;
1974
1975 UNPACK_24 (op, dst);
1976 var_offset = ip[1];
1977 var_loc_u32 = ip + var_offset;
1978 VM_ASSERT (ALIGNED_P (var_loc_u32, SCM), abort());
1979 var_loc = (SCM *) var_loc_u32;
1980 var = *var_loc;
1981
1982 if (SCM_UNLIKELY (!SCM_VARIABLEP (var)))
1983 {
1984 SCM modname, sym;
1985 scm_t_int32 modname_offset = ip[2]; /* signed */
1986 scm_t_int32 sym_offset = ip[3]; /* signed */
1987 scm_t_uint32 *modname_words = ip + modname_offset;
1988 scm_t_uint32 *sym_loc = ip + sym_offset;
1989
1990 SYNC_IP ();
1991
1992 VM_ASSERT (!(((scm_t_uintptr) modname_words) & 0x7), abort());
1993 VM_ASSERT (ALIGNED_P (sym_loc, SCM), abort());
1994
1995 modname = SCM_PACK ((scm_t_bits) modname_words);
1996 sym = *((SCM *) sym_loc);
1997
1998 if (!scm_module_system_booted_p)
1999 {
2000 ASSERT (scm_is_true
2001 scm_equal_p (modname,
2002 scm_list_2
2003 (SCM_BOOL_T,
2004 scm_from_utf8_symbol ("guile"))));
2005 var = scm_lookup (sym);
2006 }
2007 else if (scm_is_true (SCM_CAR (modname)))
2008 var = scm_public_lookup (SCM_CDR (modname), sym);
2009 else
2010 var = scm_private_lookup (SCM_CDR (modname), sym);
2011
2012 CACHE_FP ();
2013
2014 if (ip[4] & 0x1)
2015 VM_ASSERT (VARIABLE_BOUNDP (var), vm_error_unbound (fp[0], sym));
2016
2017 *var_loc = var;
2018 }
2019
2020 LOCAL_SET (dst, var);
2021 NEXT (5);
2022 }
2023
2024 \f
2025
2026 /*
2027 * The dynamic environment
2028 */
2029
2030 /* prompt tag:24 escape-only?:1 _:7 proc-slot:24 _:8 handler-offset:24
2031 *
2032 * Push a new prompt on the dynamic stack, with a tag from TAG and a
2033 * handler at HANDLER-OFFSET words from the current IP. The handler
2034 * will expect a multiple-value return as if from a call with the
2035 * procedure at PROC-SLOT.
2036 */
2037 VM_DEFINE_OP (64, prompt, "prompt", OP3 (U8_U24, B1_X7_U24, X8_L24))
2038 {
2039 scm_t_uint32 tag, proc_slot;
2040 scm_t_int32 offset;
2041 scm_t_uint8 escape_only_p;
2042 scm_t_dynstack_prompt_flags flags;
2043
2044 UNPACK_24 (op, tag);
2045 escape_only_p = ip[1] & 0x1;
2046 UNPACK_24 (ip[1], proc_slot);
2047 offset = ip[2];
2048 offset >>= 8; /* Sign extension */
2049
2050 /* Push the prompt onto the dynamic stack. */
2051 flags = escape_only_p ? SCM_F_DYNSTACK_PROMPT_ESCAPE_ONLY : 0;
2052 scm_dynstack_push_prompt (&thread->dynstack, flags,
2053 LOCAL_REF (tag),
2054 fp - vp->stack_base,
2055 LOCAL_ADDRESS (proc_slot) - vp->stack_base,
2056 ip + offset,
2057 registers);
2058 NEXT (3);
2059 }
2060
2061 /* wind winder:12 unwinder:12
2062 *
2063 * Push wind and unwind procedures onto the dynamic stack. Note that
2064 * neither are actually called; the compiler should emit calls to wind
2065 * and unwind for the normal dynamic-wind control flow. Also note that
2066 * the compiler should have inserted checks that they wind and unwind
2067 * procs are thunks, if it could not prove that to be the case.
2068 */
2069 VM_DEFINE_OP (65, wind, "wind", OP1 (U8_U12_U12))
2070 {
2071 scm_t_uint16 winder, unwinder;
2072 UNPACK_12_12 (op, winder, unwinder);
2073 scm_dynstack_push_dynwind (&thread->dynstack,
2074 LOCAL_REF (winder), LOCAL_REF (unwinder));
2075 NEXT (1);
2076 }
2077
2078 /* unwind _:24
2079 *
2080 * A normal exit from the dynamic extent of an expression. Pop the top
2081 * entry off of the dynamic stack.
2082 */
2083 VM_DEFINE_OP (66, unwind, "unwind", OP1 (U8_X24))
2084 {
2085 scm_dynstack_pop (&thread->dynstack);
2086 NEXT (1);
2087 }
2088
2089 /* push-fluid fluid:12 value:12
2090 *
2091 * Dynamically bind VALUE to FLUID.
2092 */
2093 VM_DEFINE_OP (67, push_fluid, "push-fluid", OP1 (U8_U12_U12))
2094 {
2095 scm_t_uint32 fluid, value;
2096
2097 UNPACK_12_12 (op, fluid, value);
2098
2099 scm_dynstack_push_fluid (&thread->dynstack,
2100 LOCAL_REF (fluid), LOCAL_REF (value),
2101 thread->dynamic_state);
2102 NEXT (1);
2103 }
2104
2105 /* pop-fluid _:24
2106 *
2107 * Leave the dynamic extent of a with-fluid* expression, restoring the
2108 * fluid to its previous value.
2109 */
2110 VM_DEFINE_OP (68, pop_fluid, "pop-fluid", OP1 (U8_X24))
2111 {
2112 /* This function must not allocate. */
2113 scm_dynstack_unwind_fluid (&thread->dynstack,
2114 thread->dynamic_state);
2115 NEXT (1);
2116 }
2117
2118 /* fluid-ref dst:12 src:12
2119 *
2120 * Reference the fluid in SRC, and place the value in DST.
2121 */
2122 VM_DEFINE_OP (69, fluid_ref, "fluid-ref", OP1 (U8_U12_U12) | OP_DST)
2123 {
2124 scm_t_uint16 dst, src;
2125 size_t num;
2126 SCM fluid, fluids;
2127
2128 UNPACK_12_12 (op, dst, src);
2129 fluid = LOCAL_REF (src);
2130 fluids = SCM_I_DYNAMIC_STATE_FLUIDS (thread->dynamic_state);
2131 if (SCM_UNLIKELY (!SCM_FLUID_P (fluid))
2132 || ((num = SCM_I_FLUID_NUM (fluid)) >= SCM_SIMPLE_VECTOR_LENGTH (fluids)))
2133 {
2134 /* Punt dynstate expansion and error handling to the C proc. */
2135 SYNC_IP ();
2136 LOCAL_SET (dst, scm_fluid_ref (fluid));
2137 }
2138 else
2139 {
2140 SCM val = SCM_SIMPLE_VECTOR_REF (fluids, num);
2141 if (scm_is_eq (val, SCM_UNDEFINED))
2142 val = SCM_I_FLUID_DEFAULT (fluid);
2143 VM_ASSERT (!scm_is_eq (val, SCM_UNDEFINED),
2144 vm_error_unbound_fluid (SCM_FRAME_PROGRAM (fp), fluid));
2145 LOCAL_SET (dst, val);
2146 }
2147
2148 NEXT (1);
2149 }
2150
2151 /* fluid-set fluid:12 val:12
2152 *
2153 * Set the value of the fluid in DST to the value in SRC.
2154 */
2155 VM_DEFINE_OP (70, fluid_set, "fluid-set", OP1 (U8_U12_U12))
2156 {
2157 scm_t_uint16 a, b;
2158 size_t num;
2159 SCM fluid, fluids;
2160
2161 UNPACK_12_12 (op, a, b);
2162 fluid = LOCAL_REF (a);
2163 fluids = SCM_I_DYNAMIC_STATE_FLUIDS (thread->dynamic_state);
2164 if (SCM_UNLIKELY (!SCM_FLUID_P (fluid))
2165 || ((num = SCM_I_FLUID_NUM (fluid)) >= SCM_SIMPLE_VECTOR_LENGTH (fluids)))
2166 {
2167 /* Punt dynstate expansion and error handling to the C proc. */
2168 SYNC_IP ();
2169 scm_fluid_set_x (fluid, LOCAL_REF (b));
2170 }
2171 else
2172 SCM_SIMPLE_VECTOR_SET (fluids, num, LOCAL_REF (b));
2173
2174 NEXT (1);
2175 }
2176
2177
2178 \f
2179
2180 /*
2181 * Strings, symbols, and keywords
2182 */
2183
2184 /* string-length dst:12 src:12
2185 *
2186 * Store the length of the string in SRC in DST.
2187 */
2188 VM_DEFINE_OP (71, string_length, "string-length", OP1 (U8_U12_U12) | OP_DST)
2189 {
2190 ARGS1 (str);
2191 if (SCM_LIKELY (scm_is_string (str)))
2192 RETURN (SCM_I_MAKINUM (scm_i_string_length (str)));
2193 else
2194 {
2195 SYNC_IP ();
2196 RETURN (scm_string_length (str));
2197 }
2198 }
2199
2200 /* string-ref dst:8 src:8 idx:8
2201 *
2202 * Fetch the character at position IDX in the string in SRC, and store
2203 * it in DST.
2204 */
2205 VM_DEFINE_OP (72, string_ref, "string-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2206 {
2207 scm_t_signed_bits i = 0;
2208 ARGS2 (str, idx);
2209 if (SCM_LIKELY (scm_is_string (str)
2210 && SCM_I_INUMP (idx)
2211 && ((i = SCM_I_INUM (idx)) >= 0)
2212 && i < scm_i_string_length (str)))
2213 RETURN (SCM_MAKE_CHAR (scm_i_string_ref (str, i)));
2214 else
2215 {
2216 SYNC_IP ();
2217 RETURN (scm_string_ref (str, idx));
2218 }
2219 }
2220
2221 /* No string-set! instruction, as there is no good fast path there. */
2222
2223 /* string->number dst:12 src:12
2224 *
2225 * Parse a string in SRC to a number, and store in DST.
2226 */
2227 VM_DEFINE_OP (73, string_to_number, "string->number", OP1 (U8_U12_U12) | OP_DST)
2228 {
2229 scm_t_uint16 dst, src;
2230
2231 UNPACK_12_12 (op, dst, src);
2232 SYNC_IP ();
2233 LOCAL_SET (dst,
2234 scm_string_to_number (LOCAL_REF (src),
2235 SCM_UNDEFINED /* radix = 10 */));
2236 NEXT (1);
2237 }
2238
2239 /* string->symbol dst:12 src:12
2240 *
2241 * Parse a string in SRC to a symbol, and store in DST.
2242 */
2243 VM_DEFINE_OP (74, string_to_symbol, "string->symbol", OP1 (U8_U12_U12) | OP_DST)
2244 {
2245 scm_t_uint16 dst, src;
2246
2247 UNPACK_12_12 (op, dst, src);
2248 SYNC_IP ();
2249 LOCAL_SET (dst, scm_string_to_symbol (LOCAL_REF (src)));
2250 NEXT (1);
2251 }
2252
2253 /* symbol->keyword dst:12 src:12
2254 *
2255 * Make a keyword from the symbol in SRC, and store it in DST.
2256 */
2257 VM_DEFINE_OP (75, symbol_to_keyword, "symbol->keyword", OP1 (U8_U12_U12) | OP_DST)
2258 {
2259 scm_t_uint16 dst, src;
2260 UNPACK_12_12 (op, dst, src);
2261 SYNC_IP ();
2262 LOCAL_SET (dst, scm_symbol_to_keyword (LOCAL_REF (src)));
2263 NEXT (1);
2264 }
2265
2266 \f
2267
2268 /*
2269 * Pairs
2270 */
2271
2272 /* cons dst:8 car:8 cdr:8
2273 *
2274 * Cons CAR and CDR, and store the result in DST.
2275 */
2276 VM_DEFINE_OP (76, cons, "cons", OP1 (U8_U8_U8_U8) | OP_DST)
2277 {
2278 ARGS2 (x, y);
2279 RETURN (scm_inline_cons (thread, x, y));
2280 }
2281
2282 /* car dst:12 src:12
2283 *
2284 * Place the car of SRC in DST.
2285 */
2286 VM_DEFINE_OP (77, car, "car", OP1 (U8_U12_U12) | OP_DST)
2287 {
2288 ARGS1 (x);
2289 VM_VALIDATE_PAIR (x, "car");
2290 RETURN (SCM_CAR (x));
2291 }
2292
2293 /* cdr dst:12 src:12
2294 *
2295 * Place the cdr of SRC in DST.
2296 */
2297 VM_DEFINE_OP (78, cdr, "cdr", OP1 (U8_U12_U12) | OP_DST)
2298 {
2299 ARGS1 (x);
2300 VM_VALIDATE_PAIR (x, "cdr");
2301 RETURN (SCM_CDR (x));
2302 }
2303
2304 /* set-car! pair:12 car:12
2305 *
2306 * Set the car of DST to SRC.
2307 */
2308 VM_DEFINE_OP (79, set_car, "set-car!", OP1 (U8_U12_U12))
2309 {
2310 scm_t_uint16 a, b;
2311 SCM x, y;
2312 UNPACK_12_12 (op, a, b);
2313 x = LOCAL_REF (a);
2314 y = LOCAL_REF (b);
2315 VM_VALIDATE_PAIR (x, "set-car!");
2316 SCM_SETCAR (x, y);
2317 NEXT (1);
2318 }
2319
2320 /* set-cdr! pair:12 cdr:12
2321 *
2322 * Set the cdr of DST to SRC.
2323 */
2324 VM_DEFINE_OP (80, set_cdr, "set-cdr!", OP1 (U8_U12_U12))
2325 {
2326 scm_t_uint16 a, b;
2327 SCM x, y;
2328 UNPACK_12_12 (op, a, b);
2329 x = LOCAL_REF (a);
2330 y = LOCAL_REF (b);
2331 VM_VALIDATE_PAIR (x, "set-car!");
2332 SCM_SETCDR (x, y);
2333 NEXT (1);
2334 }
2335
2336
2337 \f
2338
2339 /*
2340 * Numeric operations
2341 */
2342
2343 /* add dst:8 a:8 b:8
2344 *
2345 * Add A to B, and place the result in DST.
2346 */
2347 VM_DEFINE_OP (81, add, "add", OP1 (U8_U8_U8_U8) | OP_DST)
2348 {
2349 BINARY_INTEGER_OP (+, scm_sum);
2350 }
2351
2352 /* add1 dst:12 src:12
2353 *
2354 * Add 1 to the value in SRC, and place the result in DST.
2355 */
2356 VM_DEFINE_OP (82, add1, "add1", OP1 (U8_U12_U12) | OP_DST)
2357 {
2358 ARGS1 (x);
2359
2360 /* Check for overflow. We must avoid overflow in the signed
2361 addition below, even if X is not an inum. */
2362 if (SCM_LIKELY ((scm_t_signed_bits) SCM_UNPACK (x) <= INUM_MAX - INUM_STEP))
2363 {
2364 SCM result;
2365
2366 /* Add 1 to the integer without untagging. */
2367 result = SCM_PACK ((scm_t_signed_bits) SCM_UNPACK (x) + INUM_STEP);
2368
2369 if (SCM_LIKELY (SCM_I_INUMP (result)))
2370 RETURN (result);
2371 }
2372
2373 RETURN_EXP (scm_sum (x, SCM_I_MAKINUM (1)));
2374 }
2375
2376 /* sub dst:8 a:8 b:8
2377 *
2378 * Subtract B from A, and place the result in DST.
2379 */
2380 VM_DEFINE_OP (83, sub, "sub", OP1 (U8_U8_U8_U8) | OP_DST)
2381 {
2382 BINARY_INTEGER_OP (-, scm_difference);
2383 }
2384
2385 /* sub1 dst:12 src:12
2386 *
2387 * Subtract 1 from SRC, and place the result in DST.
2388 */
2389 VM_DEFINE_OP (84, sub1, "sub1", OP1 (U8_U12_U12) | OP_DST)
2390 {
2391 ARGS1 (x);
2392
2393 /* Check for overflow. We must avoid overflow in the signed
2394 subtraction below, even if X is not an inum. */
2395 if (SCM_LIKELY ((scm_t_signed_bits) SCM_UNPACK (x) >= INUM_MIN + INUM_STEP))
2396 {
2397 SCM result;
2398
2399 /* Substract 1 from the integer without untagging. */
2400 result = SCM_PACK ((scm_t_signed_bits) SCM_UNPACK (x) - INUM_STEP);
2401
2402 if (SCM_LIKELY (SCM_I_INUMP (result)))
2403 RETURN (result);
2404 }
2405
2406 RETURN_EXP (scm_difference (x, SCM_I_MAKINUM (1)));
2407 }
2408
2409 /* mul dst:8 a:8 b:8
2410 *
2411 * Multiply A and B, and place the result in DST.
2412 */
2413 VM_DEFINE_OP (85, mul, "mul", OP1 (U8_U8_U8_U8) | OP_DST)
2414 {
2415 ARGS2 (x, y);
2416 RETURN_EXP (scm_product (x, y));
2417 }
2418
2419 /* div dst:8 a:8 b:8
2420 *
2421 * Divide A by B, and place the result in DST.
2422 */
2423 VM_DEFINE_OP (86, div, "div", OP1 (U8_U8_U8_U8) | OP_DST)
2424 {
2425 ARGS2 (x, y);
2426 RETURN_EXP (scm_divide (x, y));
2427 }
2428
2429 /* quo dst:8 a:8 b:8
2430 *
2431 * Divide A by B, and place the quotient in DST.
2432 */
2433 VM_DEFINE_OP (87, quo, "quo", OP1 (U8_U8_U8_U8) | OP_DST)
2434 {
2435 ARGS2 (x, y);
2436 RETURN_EXP (scm_quotient (x, y));
2437 }
2438
2439 /* rem dst:8 a:8 b:8
2440 *
2441 * Divide A by B, and place the remainder in DST.
2442 */
2443 VM_DEFINE_OP (88, rem, "rem", OP1 (U8_U8_U8_U8) | OP_DST)
2444 {
2445 ARGS2 (x, y);
2446 RETURN_EXP (scm_remainder (x, y));
2447 }
2448
2449 /* mod dst:8 a:8 b:8
2450 *
2451 * Place the modulo of A by B in DST.
2452 */
2453 VM_DEFINE_OP (89, mod, "mod", OP1 (U8_U8_U8_U8) | OP_DST)
2454 {
2455 ARGS2 (x, y);
2456 RETURN_EXP (scm_modulo (x, y));
2457 }
2458
2459 /* ash dst:8 a:8 b:8
2460 *
2461 * Shift A arithmetically by B bits, and place the result in DST.
2462 */
2463 VM_DEFINE_OP (90, ash, "ash", OP1 (U8_U8_U8_U8) | OP_DST)
2464 {
2465 ARGS2 (x, y);
2466 if (SCM_I_INUMP (x) && SCM_I_INUMP (y))
2467 {
2468 if (SCM_I_INUM (y) < 0)
2469 /* Right shift, will be a fixnum. */
2470 RETURN (SCM_I_MAKINUM
2471 (SCM_SRS (SCM_I_INUM (x),
2472 (-SCM_I_INUM (y) <= SCM_I_FIXNUM_BIT-1)
2473 ? -SCM_I_INUM (y) : SCM_I_FIXNUM_BIT-1)));
2474 else
2475 /* Left shift. See comments in scm_ash. */
2476 {
2477 scm_t_signed_bits nn, bits_to_shift;
2478
2479 nn = SCM_I_INUM (x);
2480 bits_to_shift = SCM_I_INUM (y);
2481
2482 if (bits_to_shift < SCM_I_FIXNUM_BIT-1
2483 && ((scm_t_bits)
2484 (SCM_SRS (nn, (SCM_I_FIXNUM_BIT-1 - bits_to_shift)) + 1)
2485 <= 1))
2486 RETURN (SCM_I_MAKINUM (nn << bits_to_shift));
2487 /* fall through */
2488 }
2489 /* fall through */
2490 }
2491 RETURN_EXP (scm_ash (x, y));
2492 }
2493
2494 /* logand dst:8 a:8 b:8
2495 *
2496 * Place the bitwise AND of A and B into DST.
2497 */
2498 VM_DEFINE_OP (91, logand, "logand", OP1 (U8_U8_U8_U8) | OP_DST)
2499 {
2500 ARGS2 (x, y);
2501 if (SCM_I_INUMP (x) && SCM_I_INUMP (y))
2502 /* Compute bitwise AND without untagging */
2503 RETURN (SCM_PACK (SCM_UNPACK (x) & SCM_UNPACK (y)));
2504 RETURN_EXP (scm_logand (x, y));
2505 }
2506
2507 /* logior dst:8 a:8 b:8
2508 *
2509 * Place the bitwise inclusive OR of A with B in DST.
2510 */
2511 VM_DEFINE_OP (92, logior, "logior", OP1 (U8_U8_U8_U8) | OP_DST)
2512 {
2513 ARGS2 (x, y);
2514 if (SCM_I_INUMP (x) && SCM_I_INUMP (y))
2515 /* Compute bitwise OR without untagging */
2516 RETURN (SCM_PACK (SCM_UNPACK (x) | SCM_UNPACK (y)));
2517 RETURN_EXP (scm_logior (x, y));
2518 }
2519
2520 /* logxor dst:8 a:8 b:8
2521 *
2522 * Place the bitwise exclusive OR of A with B in DST.
2523 */
2524 VM_DEFINE_OP (93, logxor, "logxor", OP1 (U8_U8_U8_U8) | OP_DST)
2525 {
2526 ARGS2 (x, y);
2527 if (SCM_I_INUMP (x) && SCM_I_INUMP (y))
2528 RETURN (SCM_I_MAKINUM (SCM_I_INUM (x) ^ SCM_I_INUM (y)));
2529 RETURN_EXP (scm_logxor (x, y));
2530 }
2531
2532 /* make-vector/immediate dst:8 length:8 init:8
2533 *
2534 * Make a short vector of known size and write it to DST. The vector
2535 * will have space for LENGTH slots, an immediate value. They will be
2536 * filled with the value in slot INIT.
2537 */
2538 VM_DEFINE_OP (94, make_vector_immediate, "make-vector/immediate", OP1 (U8_U8_U8_U8) | OP_DST)
2539 {
2540 scm_t_uint8 dst, init;
2541 scm_t_int32 length, n;
2542 SCM val, vector;
2543
2544 UNPACK_8_8_8 (op, dst, length, init);
2545
2546 val = LOCAL_REF (init);
2547 vector = scm_inline_words (thread, scm_tc7_vector | (length << 8),
2548 length + 1);
2549 for (n = 0; n < length; n++)
2550 SCM_SIMPLE_VECTOR_SET (vector, n, val);
2551 LOCAL_SET (dst, vector);
2552 NEXT (1);
2553 }
2554
2555 /* vector-length dst:12 src:12
2556 *
2557 * Store the length of the vector in SRC in DST.
2558 */
2559 VM_DEFINE_OP (95, vector_length, "vector-length", OP1 (U8_U12_U12) | OP_DST)
2560 {
2561 ARGS1 (vect);
2562 VM_ASSERT (SCM_I_IS_VECTOR (vect),
2563 vm_error_not_a_vector ("vector-ref", vect));
2564 RETURN (SCM_I_MAKINUM (SCM_I_VECTOR_LENGTH (vect)));
2565 }
2566
2567 /* vector-ref dst:8 src:8 idx:8
2568 *
2569 * Fetch the item at position IDX in the vector in SRC, and store it
2570 * in DST.
2571 */
2572 VM_DEFINE_OP (96, vector_ref, "vector-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2573 {
2574 scm_t_signed_bits i = 0;
2575 ARGS2 (vect, idx);
2576 VM_ASSERT (SCM_I_IS_VECTOR (vect),
2577 vm_error_not_a_vector ("vector-ref", vect));
2578 VM_ASSERT ((SCM_I_INUMP (idx)
2579 && ((i = SCM_I_INUM (idx)) >= 0)
2580 && i < SCM_I_VECTOR_LENGTH (vect)),
2581 vm_error_out_of_range ("vector-ref", idx));
2582 RETURN (SCM_I_VECTOR_ELTS (vect)[i]);
2583 }
2584
2585 /* vector-ref/immediate dst:8 src:8 idx:8
2586 *
2587 * Fill DST with the item IDX elements into the vector at SRC. Useful
2588 * for building data types using vectors.
2589 */
2590 VM_DEFINE_OP (97, vector_ref_immediate, "vector-ref/immediate", OP1 (U8_U8_U8_U8) | OP_DST)
2591 {
2592 scm_t_uint8 dst, src, idx;
2593 SCM v;
2594
2595 UNPACK_8_8_8 (op, dst, src, idx);
2596 v = LOCAL_REF (src);
2597 VM_ASSERT (SCM_I_IS_VECTOR (v),
2598 vm_error_not_a_vector ("vector-ref", v));
2599 VM_ASSERT (idx < SCM_I_VECTOR_LENGTH (v),
2600 vm_error_out_of_range ("vector-ref", scm_from_size_t (idx)));
2601 LOCAL_SET (dst, SCM_I_VECTOR_ELTS (LOCAL_REF (src))[idx]);
2602 NEXT (1);
2603 }
2604
2605 /* vector-set! dst:8 idx:8 src:8
2606 *
2607 * Store SRC into the vector DST at index IDX.
2608 */
2609 VM_DEFINE_OP (98, vector_set, "vector-set!", OP1 (U8_U8_U8_U8))
2610 {
2611 scm_t_uint8 dst, idx_var, src;
2612 SCM vect, idx, val;
2613 scm_t_signed_bits i = 0;
2614
2615 UNPACK_8_8_8 (op, dst, idx_var, src);
2616 vect = LOCAL_REF (dst);
2617 idx = LOCAL_REF (idx_var);
2618 val = LOCAL_REF (src);
2619
2620 VM_ASSERT (SCM_I_IS_VECTOR (vect),
2621 vm_error_not_a_vector ("vector-ref", vect));
2622 VM_ASSERT ((SCM_I_INUMP (idx)
2623 && ((i = SCM_I_INUM (idx)) >= 0)
2624 && i < SCM_I_VECTOR_LENGTH (vect)),
2625 vm_error_out_of_range ("vector-ref", idx));
2626 SCM_I_VECTOR_WELTS (vect)[i] = val;
2627 NEXT (1);
2628 }
2629
2630 /* vector-set!/immediate dst:8 idx:8 src:8
2631 *
2632 * Store SRC into the vector DST at index IDX. Here IDX is an
2633 * immediate value.
2634 */
2635 VM_DEFINE_OP (99, vector_set_immediate, "vector-set!/immediate", OP1 (U8_U8_U8_U8))
2636 {
2637 scm_t_uint8 dst, idx, src;
2638 SCM vect, val;
2639
2640 UNPACK_8_8_8 (op, dst, idx, src);
2641 vect = LOCAL_REF (dst);
2642 val = LOCAL_REF (src);
2643
2644 VM_ASSERT (SCM_I_IS_VECTOR (vect),
2645 vm_error_not_a_vector ("vector-ref", vect));
2646 VM_ASSERT (idx < SCM_I_VECTOR_LENGTH (vect),
2647 vm_error_out_of_range ("vector-ref", scm_from_size_t (idx)));
2648 SCM_I_VECTOR_WELTS (vect)[idx] = val;
2649 NEXT (1);
2650 }
2651
2652
2653 \f
2654
2655 /*
2656 * Structs and GOOPS
2657 */
2658
2659 /* struct-vtable dst:12 src:12
2660 *
2661 * Store the vtable of SRC into DST.
2662 */
2663 VM_DEFINE_OP (100, struct_vtable, "struct-vtable", OP1 (U8_U12_U12) | OP_DST)
2664 {
2665 ARGS1 (obj);
2666 VM_VALIDATE_STRUCT (obj, "struct_vtable");
2667 RETURN (SCM_STRUCT_VTABLE (obj));
2668 }
2669
2670 /* allocate-struct/immediate dst:8 vtable:8 nfields:8
2671 *
2672 * Allocate a new struct with VTABLE, and place it in DST. The struct
2673 * will be constructed with space for NFIELDS fields, which should
2674 * correspond to the field count of the VTABLE.
2675 */
2676 VM_DEFINE_OP (101, allocate_struct_immediate, "allocate-struct/immediate", OP1 (U8_U8_U8_U8) | OP_DST)
2677 {
2678 scm_t_uint8 dst, vtable, nfields;
2679 SCM ret;
2680
2681 UNPACK_8_8_8 (op, dst, vtable, nfields);
2682
2683 SYNC_IP ();
2684 ret = scm_allocate_struct (LOCAL_REF (vtable), SCM_I_MAKINUM (nfields));
2685 LOCAL_SET (dst, ret);
2686
2687 NEXT (1);
2688 }
2689
2690 /* struct-ref/immediate dst:8 src:8 idx:8
2691 *
2692 * Fetch the item at slot IDX in the struct in SRC, and store it
2693 * in DST. IDX is an immediate unsigned 8-bit value.
2694 */
2695 VM_DEFINE_OP (102, struct_ref_immediate, "struct-ref/immediate", OP1 (U8_U8_U8_U8) | OP_DST)
2696 {
2697 scm_t_uint8 dst, src, idx;
2698 SCM obj;
2699
2700 UNPACK_8_8_8 (op, dst, src, idx);
2701
2702 obj = LOCAL_REF (src);
2703
2704 if (SCM_LIKELY (SCM_STRUCTP (obj)
2705 && SCM_STRUCT_VTABLE_FLAG_IS_SET (obj,
2706 SCM_VTABLE_FLAG_SIMPLE)
2707 && idx < SCM_STRUCT_DATA_REF (SCM_STRUCT_VTABLE (obj),
2708 scm_vtable_index_size)))
2709 RETURN (SCM_STRUCT_SLOT_REF (obj, idx));
2710
2711 SYNC_IP ();
2712 RETURN (scm_struct_ref (obj, SCM_I_MAKINUM (idx)));
2713 }
2714
2715 /* struct-set!/immediate dst:8 idx:8 src:8
2716 *
2717 * Store SRC into the struct DST at slot IDX. IDX is an immediate
2718 * unsigned 8-bit value.
2719 */
2720 VM_DEFINE_OP (103, struct_set_immediate, "struct-set!/immediate", OP1 (U8_U8_U8_U8))
2721 {
2722 scm_t_uint8 dst, idx, src;
2723 SCM obj, val;
2724
2725 UNPACK_8_8_8 (op, dst, idx, src);
2726
2727 obj = LOCAL_REF (dst);
2728 val = LOCAL_REF (src);
2729
2730 if (SCM_LIKELY (SCM_STRUCTP (obj)
2731 && SCM_STRUCT_VTABLE_FLAG_IS_SET (obj,
2732 SCM_VTABLE_FLAG_SIMPLE)
2733 && SCM_STRUCT_VTABLE_FLAG_IS_SET (obj,
2734 SCM_VTABLE_FLAG_SIMPLE_RW)
2735 && idx < SCM_STRUCT_DATA_REF (SCM_STRUCT_VTABLE (obj),
2736 scm_vtable_index_size)))
2737 {
2738 SCM_STRUCT_SLOT_SET (obj, idx, val);
2739 NEXT (1);
2740 }
2741
2742 SYNC_IP ();
2743 scm_struct_set_x (obj, SCM_I_MAKINUM (idx), val);
2744 NEXT (1);
2745 }
2746
2747 /* class-of dst:12 type:12
2748 *
2749 * Store the vtable of SRC into DST.
2750 */
2751 VM_DEFINE_OP (104, class_of, "class-of", OP1 (U8_U12_U12) | OP_DST)
2752 {
2753 ARGS1 (obj);
2754 if (SCM_INSTANCEP (obj))
2755 RETURN (SCM_CLASS_OF (obj));
2756 SYNC_IP ();
2757 RETURN (scm_class_of (obj));
2758 }
2759
2760 \f
2761
2762 /*
2763 * Arrays, packed uniform arrays, and bytevectors.
2764 */
2765
2766 /* load-typed-array dst:8 type:8 shape:8 offset:32 len:32
2767 *
2768 * Load the contiguous typed array located at OFFSET 32-bit words away
2769 * from the instruction pointer, and store into DST. LEN is a byte
2770 * length. OFFSET is signed.
2771 */
2772 VM_DEFINE_OP (105, load_typed_array, "load-typed-array", OP3 (U8_U8_U8_U8, N32, U32) | OP_DST)
2773 {
2774 scm_t_uint8 dst, type, shape;
2775 scm_t_int32 offset;
2776 scm_t_uint32 len;
2777
2778 UNPACK_8_8_8 (op, dst, type, shape);
2779 offset = ip[1];
2780 len = ip[2];
2781 SYNC_IP ();
2782 LOCAL_SET (dst, scm_from_contiguous_typed_array (LOCAL_REF (type),
2783 LOCAL_REF (shape),
2784 ip + offset, len));
2785 NEXT (3);
2786 }
2787
2788 /* make-array dst:12 type:12 _:8 fill:12 bounds:12
2789 *
2790 * Make a new array with TYPE, FILL, and BOUNDS, storing it in DST.
2791 */
2792 VM_DEFINE_OP (106, make_array, "make-array", OP2 (U8_U12_U12, X8_U12_U12) | OP_DST)
2793 {
2794 scm_t_uint16 dst, type, fill, bounds;
2795 UNPACK_12_12 (op, dst, type);
2796 UNPACK_12_12 (ip[1], fill, bounds);
2797 SYNC_IP ();
2798 LOCAL_SET (dst, scm_make_typed_array (LOCAL_REF (type), LOCAL_REF (fill),
2799 LOCAL_REF (bounds)));
2800 NEXT (2);
2801 }
2802
2803 /* bv-u8-ref dst:8 src:8 idx:8
2804 * bv-s8-ref dst:8 src:8 idx:8
2805 * bv-u16-ref dst:8 src:8 idx:8
2806 * bv-s16-ref dst:8 src:8 idx:8
2807 * bv-u32-ref dst:8 src:8 idx:8
2808 * bv-s32-ref dst:8 src:8 idx:8
2809 * bv-u64-ref dst:8 src:8 idx:8
2810 * bv-s64-ref dst:8 src:8 idx:8
2811 * bv-f32-ref dst:8 src:8 idx:8
2812 * bv-f64-ref dst:8 src:8 idx:8
2813 *
2814 * Fetch the item at byte offset IDX in the bytevector SRC, and store
2815 * it in DST. All accesses use native endianness.
2816 */
2817 #define BV_FIXABLE_INT_REF(stem, fn_stem, type, size) \
2818 do { \
2819 scm_t_signed_bits i; \
2820 const scm_t_ ## type *int_ptr; \
2821 ARGS2 (bv, idx); \
2822 \
2823 VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-ref"); \
2824 i = SCM_I_INUM (idx); \
2825 int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \
2826 \
2827 if (SCM_LIKELY (SCM_I_INUMP (idx) \
2828 && (i >= 0) \
2829 && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \
2830 && (ALIGNED_P (int_ptr, scm_t_ ## type)))) \
2831 RETURN (SCM_I_MAKINUM (*int_ptr)); \
2832 else \
2833 { \
2834 SYNC_IP (); \
2835 RETURN (scm_bytevector_ ## fn_stem ## _ref (bv, idx)); \
2836 } \
2837 } while (0)
2838
2839 #define BV_INT_REF(stem, type, size) \
2840 do { \
2841 scm_t_signed_bits i; \
2842 const scm_t_ ## type *int_ptr; \
2843 ARGS2 (bv, idx); \
2844 \
2845 VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-ref"); \
2846 i = SCM_I_INUM (idx); \
2847 int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \
2848 \
2849 if (SCM_LIKELY (SCM_I_INUMP (idx) \
2850 && (i >= 0) \
2851 && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \
2852 && (ALIGNED_P (int_ptr, scm_t_ ## type)))) \
2853 { \
2854 scm_t_ ## type x = *int_ptr; \
2855 if (SCM_FIXABLE (x)) \
2856 RETURN (SCM_I_MAKINUM (x)); \
2857 else \
2858 { \
2859 SYNC_IP (); \
2860 RETURN (scm_from_ ## type (x)); \
2861 } \
2862 } \
2863 else \
2864 { \
2865 SYNC_IP (); \
2866 RETURN (scm_bytevector_ ## stem ## _native_ref (bv, idx)); \
2867 } \
2868 } while (0)
2869
2870 #define BV_FLOAT_REF(stem, fn_stem, type, size) \
2871 do { \
2872 scm_t_signed_bits i; \
2873 const type *float_ptr; \
2874 ARGS2 (bv, idx); \
2875 \
2876 VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-ref"); \
2877 i = SCM_I_INUM (idx); \
2878 float_ptr = (type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \
2879 \
2880 SYNC_IP (); \
2881 if (SCM_LIKELY (SCM_I_INUMP (idx) \
2882 && (i >= 0) \
2883 && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \
2884 && (ALIGNED_P (float_ptr, type)))) \
2885 RETURN (scm_from_double (*float_ptr)); \
2886 else \
2887 RETURN (scm_bytevector_ ## fn_stem ## _native_ref (bv, idx)); \
2888 } while (0)
2889
2890 VM_DEFINE_OP (107, bv_u8_ref, "bv-u8-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2891 BV_FIXABLE_INT_REF (u8, u8, uint8, 1);
2892
2893 VM_DEFINE_OP (108, bv_s8_ref, "bv-s8-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2894 BV_FIXABLE_INT_REF (s8, s8, int8, 1);
2895
2896 VM_DEFINE_OP (109, bv_u16_ref, "bv-u16-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2897 BV_FIXABLE_INT_REF (u16, u16_native, uint16, 2);
2898
2899 VM_DEFINE_OP (110, bv_s16_ref, "bv-s16-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2900 BV_FIXABLE_INT_REF (s16, s16_native, int16, 2);
2901
2902 VM_DEFINE_OP (111, bv_u32_ref, "bv-u32-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2903 #if SIZEOF_VOID_P > 4
2904 BV_FIXABLE_INT_REF (u32, u32_native, uint32, 4);
2905 #else
2906 BV_INT_REF (u32, uint32, 4);
2907 #endif
2908
2909 VM_DEFINE_OP (112, bv_s32_ref, "bv-s32-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2910 #if SIZEOF_VOID_P > 4
2911 BV_FIXABLE_INT_REF (s32, s32_native, int32, 4);
2912 #else
2913 BV_INT_REF (s32, int32, 4);
2914 #endif
2915
2916 VM_DEFINE_OP (113, bv_u64_ref, "bv-u64-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2917 BV_INT_REF (u64, uint64, 8);
2918
2919 VM_DEFINE_OP (114, bv_s64_ref, "bv-s64-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2920 BV_INT_REF (s64, int64, 8);
2921
2922 VM_DEFINE_OP (115, bv_f32_ref, "bv-f32-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2923 BV_FLOAT_REF (f32, ieee_single, float, 4);
2924
2925 VM_DEFINE_OP (116, bv_f64_ref, "bv-f64-ref", OP1 (U8_U8_U8_U8) | OP_DST)
2926 BV_FLOAT_REF (f64, ieee_double, double, 8);
2927
2928 /* bv-u8-set! dst:8 idx:8 src:8
2929 * bv-s8-set! dst:8 idx:8 src:8
2930 * bv-u16-set! dst:8 idx:8 src:8
2931 * bv-s16-set! dst:8 idx:8 src:8
2932 * bv-u32-set! dst:8 idx:8 src:8
2933 * bv-s32-set! dst:8 idx:8 src:8
2934 * bv-u64-set! dst:8 idx:8 src:8
2935 * bv-s64-set! dst:8 idx:8 src:8
2936 * bv-f32-set! dst:8 idx:8 src:8
2937 * bv-f64-set! dst:8 idx:8 src:8
2938 *
2939 * Store SRC into the bytevector DST at byte offset IDX. Multibyte
2940 * values are written using native endianness.
2941 */
2942 #define BV_FIXABLE_INT_SET(stem, fn_stem, type, min, max, size) \
2943 do { \
2944 scm_t_uint8 dst, idx, src; \
2945 scm_t_signed_bits i, j = 0; \
2946 SCM bv, scm_idx, val; \
2947 scm_t_ ## type *int_ptr; \
2948 \
2949 UNPACK_8_8_8 (op, dst, idx, src); \
2950 bv = LOCAL_REF (dst); \
2951 scm_idx = LOCAL_REF (idx); \
2952 val = LOCAL_REF (src); \
2953 VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-set!"); \
2954 i = SCM_I_INUM (scm_idx); \
2955 int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \
2956 \
2957 if (SCM_LIKELY (SCM_I_INUMP (scm_idx) \
2958 && (i >= 0) \
2959 && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \
2960 && (ALIGNED_P (int_ptr, scm_t_ ## type)) \
2961 && (SCM_I_INUMP (val)) \
2962 && ((j = SCM_I_INUM (val)) >= min) \
2963 && (j <= max))) \
2964 *int_ptr = (scm_t_ ## type) j; \
2965 else \
2966 { \
2967 SYNC_IP (); \
2968 scm_bytevector_ ## fn_stem ## _set_x (bv, scm_idx, val); \
2969 } \
2970 NEXT (1); \
2971 } while (0)
2972
2973 #define BV_INT_SET(stem, type, size) \
2974 do { \
2975 scm_t_uint8 dst, idx, src; \
2976 scm_t_signed_bits i; \
2977 SCM bv, scm_idx, val; \
2978 scm_t_ ## type *int_ptr; \
2979 \
2980 UNPACK_8_8_8 (op, dst, idx, src); \
2981 bv = LOCAL_REF (dst); \
2982 scm_idx = LOCAL_REF (idx); \
2983 val = LOCAL_REF (src); \
2984 VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-set!"); \
2985 i = SCM_I_INUM (scm_idx); \
2986 int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \
2987 \
2988 if (SCM_LIKELY (SCM_I_INUMP (scm_idx) \
2989 && (i >= 0) \
2990 && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \
2991 && (ALIGNED_P (int_ptr, scm_t_ ## type)))) \
2992 *int_ptr = scm_to_ ## type (val); \
2993 else \
2994 { \
2995 SYNC_IP (); \
2996 scm_bytevector_ ## stem ## _native_set_x (bv, scm_idx, val); \
2997 } \
2998 NEXT (1); \
2999 } while (0)
3000
3001 #define BV_FLOAT_SET(stem, fn_stem, type, size) \
3002 do { \
3003 scm_t_uint8 dst, idx, src; \
3004 scm_t_signed_bits i; \
3005 SCM bv, scm_idx, val; \
3006 type *float_ptr; \
3007 \
3008 UNPACK_8_8_8 (op, dst, idx, src); \
3009 bv = LOCAL_REF (dst); \
3010 scm_idx = LOCAL_REF (idx); \
3011 val = LOCAL_REF (src); \
3012 VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-set!"); \
3013 i = SCM_I_INUM (scm_idx); \
3014 float_ptr = (type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \
3015 \
3016 if (SCM_LIKELY (SCM_I_INUMP (scm_idx) \
3017 && (i >= 0) \
3018 && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \
3019 && (ALIGNED_P (float_ptr, type)))) \
3020 *float_ptr = scm_to_double (val); \
3021 else \
3022 { \
3023 SYNC_IP (); \
3024 scm_bytevector_ ## fn_stem ## _native_set_x (bv, scm_idx, val); \
3025 } \
3026 NEXT (1); \
3027 } while (0)
3028
3029 VM_DEFINE_OP (117, bv_u8_set, "bv-u8-set!", OP1 (U8_U8_U8_U8))
3030 BV_FIXABLE_INT_SET (u8, u8, uint8, 0, SCM_T_UINT8_MAX, 1);
3031
3032 VM_DEFINE_OP (118, bv_s8_set, "bv-s8-set!", OP1 (U8_U8_U8_U8))
3033 BV_FIXABLE_INT_SET (s8, s8, int8, SCM_T_INT8_MIN, SCM_T_INT8_MAX, 1);
3034
3035 VM_DEFINE_OP (119, bv_u16_set, "bv-u16-set!", OP1 (U8_U8_U8_U8))
3036 BV_FIXABLE_INT_SET (u16, u16_native, uint16, 0, SCM_T_UINT16_MAX, 2);
3037
3038 VM_DEFINE_OP (120, bv_s16_set, "bv-s16-set!", OP1 (U8_U8_U8_U8))
3039 BV_FIXABLE_INT_SET (s16, s16_native, int16, SCM_T_INT16_MIN, SCM_T_INT16_MAX, 2);
3040
3041 VM_DEFINE_OP (121, bv_u32_set, "bv-u32-set!", OP1 (U8_U8_U8_U8))
3042 #if SIZEOF_VOID_P > 4
3043 BV_FIXABLE_INT_SET (u32, u32_native, uint32, 0, SCM_T_UINT32_MAX, 4);
3044 #else
3045 BV_INT_SET (u32, uint32, 4);
3046 #endif
3047
3048 VM_DEFINE_OP (122, bv_s32_set, "bv-s32-set!", OP1 (U8_U8_U8_U8))
3049 #if SIZEOF_VOID_P > 4
3050 BV_FIXABLE_INT_SET (s32, s32_native, int32, SCM_T_INT32_MIN, SCM_T_INT32_MAX, 4);
3051 #else
3052 BV_INT_SET (s32, int32, 4);
3053 #endif
3054
3055 VM_DEFINE_OP (123, bv_u64_set, "bv-u64-set!", OP1 (U8_U8_U8_U8))
3056 BV_INT_SET (u64, uint64, 8);
3057
3058 VM_DEFINE_OP (124, bv_s64_set, "bv-s64-set!", OP1 (U8_U8_U8_U8))
3059 BV_INT_SET (s64, int64, 8);
3060
3061 VM_DEFINE_OP (125, bv_f32_set, "bv-f32-set!", OP1 (U8_U8_U8_U8))
3062 BV_FLOAT_SET (f32, ieee_single, float, 4);
3063
3064 VM_DEFINE_OP (126, bv_f64_set, "bv-f64-set!", OP1 (U8_U8_U8_U8))
3065 BV_FLOAT_SET (f64, ieee_double, double, 8);
3066
3067 VM_DEFINE_OP (127, unused_127, NULL, NOP)
3068 VM_DEFINE_OP (128, unused_128, NULL, NOP)
3069 VM_DEFINE_OP (129, unused_129, NULL, NOP)
3070 VM_DEFINE_OP (130, unused_130, NULL, NOP)
3071 VM_DEFINE_OP (131, unused_131, NULL, NOP)
3072 VM_DEFINE_OP (132, unused_132, NULL, NOP)
3073 VM_DEFINE_OP (133, unused_133, NULL, NOP)
3074 VM_DEFINE_OP (134, unused_134, NULL, NOP)
3075 VM_DEFINE_OP (135, unused_135, NULL, NOP)
3076 VM_DEFINE_OP (136, unused_136, NULL, NOP)
3077 VM_DEFINE_OP (137, unused_137, NULL, NOP)
3078 VM_DEFINE_OP (138, unused_138, NULL, NOP)
3079 VM_DEFINE_OP (139, unused_139, NULL, NOP)
3080 VM_DEFINE_OP (140, unused_140, NULL, NOP)
3081 VM_DEFINE_OP (141, unused_141, NULL, NOP)
3082 VM_DEFINE_OP (142, unused_142, NULL, NOP)
3083 VM_DEFINE_OP (143, unused_143, NULL, NOP)
3084 VM_DEFINE_OP (144, unused_144, NULL, NOP)
3085 VM_DEFINE_OP (145, unused_145, NULL, NOP)
3086 VM_DEFINE_OP (146, unused_146, NULL, NOP)
3087 VM_DEFINE_OP (147, unused_147, NULL, NOP)
3088 VM_DEFINE_OP (148, unused_148, NULL, NOP)
3089 VM_DEFINE_OP (149, unused_149, NULL, NOP)
3090 VM_DEFINE_OP (150, unused_150, NULL, NOP)
3091 VM_DEFINE_OP (151, unused_151, NULL, NOP)
3092 VM_DEFINE_OP (152, unused_152, NULL, NOP)
3093 VM_DEFINE_OP (153, unused_153, NULL, NOP)
3094 VM_DEFINE_OP (154, unused_154, NULL, NOP)
3095 VM_DEFINE_OP (155, unused_155, NULL, NOP)
3096 VM_DEFINE_OP (156, unused_156, NULL, NOP)
3097 VM_DEFINE_OP (157, unused_157, NULL, NOP)
3098 VM_DEFINE_OP (158, unused_158, NULL, NOP)
3099 VM_DEFINE_OP (159, unused_159, NULL, NOP)
3100 VM_DEFINE_OP (160, unused_160, NULL, NOP)
3101 VM_DEFINE_OP (161, unused_161, NULL, NOP)
3102 VM_DEFINE_OP (162, unused_162, NULL, NOP)
3103 VM_DEFINE_OP (163, unused_163, NULL, NOP)
3104 VM_DEFINE_OP (164, unused_164, NULL, NOP)
3105 VM_DEFINE_OP (165, unused_165, NULL, NOP)
3106 VM_DEFINE_OP (166, unused_166, NULL, NOP)
3107 VM_DEFINE_OP (167, unused_167, NULL, NOP)
3108 VM_DEFINE_OP (168, unused_168, NULL, NOP)
3109 VM_DEFINE_OP (169, unused_169, NULL, NOP)
3110 VM_DEFINE_OP (170, unused_170, NULL, NOP)
3111 VM_DEFINE_OP (171, unused_171, NULL, NOP)
3112 VM_DEFINE_OP (172, unused_172, NULL, NOP)
3113 VM_DEFINE_OP (173, unused_173, NULL, NOP)
3114 VM_DEFINE_OP (174, unused_174, NULL, NOP)
3115 VM_DEFINE_OP (175, unused_175, NULL, NOP)
3116 VM_DEFINE_OP (176, unused_176, NULL, NOP)
3117 VM_DEFINE_OP (177, unused_177, NULL, NOP)
3118 VM_DEFINE_OP (178, unused_178, NULL, NOP)
3119 VM_DEFINE_OP (179, unused_179, NULL, NOP)
3120 VM_DEFINE_OP (180, unused_180, NULL, NOP)
3121 VM_DEFINE_OP (181, unused_181, NULL, NOP)
3122 VM_DEFINE_OP (182, unused_182, NULL, NOP)
3123 VM_DEFINE_OP (183, unused_183, NULL, NOP)
3124 VM_DEFINE_OP (184, unused_184, NULL, NOP)
3125 VM_DEFINE_OP (185, unused_185, NULL, NOP)
3126 VM_DEFINE_OP (186, unused_186, NULL, NOP)
3127 VM_DEFINE_OP (187, unused_187, NULL, NOP)
3128 VM_DEFINE_OP (188, unused_188, NULL, NOP)
3129 VM_DEFINE_OP (189, unused_189, NULL, NOP)
3130 VM_DEFINE_OP (190, unused_190, NULL, NOP)
3131 VM_DEFINE_OP (191, unused_191, NULL, NOP)
3132 VM_DEFINE_OP (192, unused_192, NULL, NOP)
3133 VM_DEFINE_OP (193, unused_193, NULL, NOP)
3134 VM_DEFINE_OP (194, unused_194, NULL, NOP)
3135 VM_DEFINE_OP (195, unused_195, NULL, NOP)
3136 VM_DEFINE_OP (196, unused_196, NULL, NOP)
3137 VM_DEFINE_OP (197, unused_197, NULL, NOP)
3138 VM_DEFINE_OP (198, unused_198, NULL, NOP)
3139 VM_DEFINE_OP (199, unused_199, NULL, NOP)
3140 VM_DEFINE_OP (200, unused_200, NULL, NOP)
3141 VM_DEFINE_OP (201, unused_201, NULL, NOP)
3142 VM_DEFINE_OP (202, unused_202, NULL, NOP)
3143 VM_DEFINE_OP (203, unused_203, NULL, NOP)
3144 VM_DEFINE_OP (204, unused_204, NULL, NOP)
3145 VM_DEFINE_OP (205, unused_205, NULL, NOP)
3146 VM_DEFINE_OP (206, unused_206, NULL, NOP)
3147 VM_DEFINE_OP (207, unused_207, NULL, NOP)
3148 VM_DEFINE_OP (208, unused_208, NULL, NOP)
3149 VM_DEFINE_OP (209, unused_209, NULL, NOP)
3150 VM_DEFINE_OP (210, unused_210, NULL, NOP)
3151 VM_DEFINE_OP (211, unused_211, NULL, NOP)
3152 VM_DEFINE_OP (212, unused_212, NULL, NOP)
3153 VM_DEFINE_OP (213, unused_213, NULL, NOP)
3154 VM_DEFINE_OP (214, unused_214, NULL, NOP)
3155 VM_DEFINE_OP (215, unused_215, NULL, NOP)
3156 VM_DEFINE_OP (216, unused_216, NULL, NOP)
3157 VM_DEFINE_OP (217, unused_217, NULL, NOP)
3158 VM_DEFINE_OP (218, unused_218, NULL, NOP)
3159 VM_DEFINE_OP (219, unused_219, NULL, NOP)
3160 VM_DEFINE_OP (220, unused_220, NULL, NOP)
3161 VM_DEFINE_OP (221, unused_221, NULL, NOP)
3162 VM_DEFINE_OP (222, unused_222, NULL, NOP)
3163 VM_DEFINE_OP (223, unused_223, NULL, NOP)
3164 VM_DEFINE_OP (224, unused_224, NULL, NOP)
3165 VM_DEFINE_OP (225, unused_225, NULL, NOP)
3166 VM_DEFINE_OP (226, unused_226, NULL, NOP)
3167 VM_DEFINE_OP (227, unused_227, NULL, NOP)
3168 VM_DEFINE_OP (228, unused_228, NULL, NOP)
3169 VM_DEFINE_OP (229, unused_229, NULL, NOP)
3170 VM_DEFINE_OP (230, unused_230, NULL, NOP)
3171 VM_DEFINE_OP (231, unused_231, NULL, NOP)
3172 VM_DEFINE_OP (232, unused_232, NULL, NOP)
3173 VM_DEFINE_OP (233, unused_233, NULL, NOP)
3174 VM_DEFINE_OP (234, unused_234, NULL, NOP)
3175 VM_DEFINE_OP (235, unused_235, NULL, NOP)
3176 VM_DEFINE_OP (236, unused_236, NULL, NOP)
3177 VM_DEFINE_OP (237, unused_237, NULL, NOP)
3178 VM_DEFINE_OP (238, unused_238, NULL, NOP)
3179 VM_DEFINE_OP (239, unused_239, NULL, NOP)
3180 VM_DEFINE_OP (240, unused_240, NULL, NOP)
3181 VM_DEFINE_OP (241, unused_241, NULL, NOP)
3182 VM_DEFINE_OP (242, unused_242, NULL, NOP)
3183 VM_DEFINE_OP (243, unused_243, NULL, NOP)
3184 VM_DEFINE_OP (244, unused_244, NULL, NOP)
3185 VM_DEFINE_OP (245, unused_245, NULL, NOP)
3186 VM_DEFINE_OP (246, unused_246, NULL, NOP)
3187 VM_DEFINE_OP (247, unused_247, NULL, NOP)
3188 VM_DEFINE_OP (248, unused_248, NULL, NOP)
3189 VM_DEFINE_OP (249, unused_249, NULL, NOP)
3190 VM_DEFINE_OP (250, unused_250, NULL, NOP)
3191 VM_DEFINE_OP (251, unused_251, NULL, NOP)
3192 VM_DEFINE_OP (252, unused_252, NULL, NOP)
3193 VM_DEFINE_OP (253, unused_253, NULL, NOP)
3194 VM_DEFINE_OP (254, unused_254, NULL, NOP)
3195 VM_DEFINE_OP (255, unused_255, NULL, NOP)
3196 {
3197 vm_error_bad_instruction (op);
3198 abort (); /* never reached */
3199 }
3200
3201 END_DISPATCH_SWITCH;
3202 }
3203
3204
3205 #undef ABORT_CONTINUATION_HOOK
3206 #undef ALIGNED_P
3207 #undef APPLY_HOOK
3208 #undef ARGS1
3209 #undef ARGS2
3210 #undef BEGIN_DISPATCH_SWITCH
3211 #undef BINARY_INTEGER_OP
3212 #undef BR_ARITHMETIC
3213 #undef BR_BINARY
3214 #undef BR_NARGS
3215 #undef BR_UNARY
3216 #undef BV_FIXABLE_INT_REF
3217 #undef BV_FIXABLE_INT_SET
3218 #undef BV_FLOAT_REF
3219 #undef BV_FLOAT_SET
3220 #undef BV_INT_REF
3221 #undef BV_INT_SET
3222 #undef CACHE_REGISTER
3223 #undef END_DISPATCH_SWITCH
3224 #undef FREE_VARIABLE_REF
3225 #undef INIT
3226 #undef INUM_MAX
3227 #undef INUM_MIN
3228 #undef LOCAL_REF
3229 #undef LOCAL_SET
3230 #undef NEXT
3231 #undef NEXT_HOOK
3232 #undef NEXT_JUMP
3233 #undef POP_CONTINUATION_HOOK
3234 #undef PUSH_CONTINUATION_HOOK
3235 #undef RETURN
3236 #undef RETURN_ONE_VALUE
3237 #undef RETURN_VALUE_LIST
3238 #undef RUN_HOOK
3239 #undef RUN_HOOK0
3240 #undef RUN_HOOK1
3241 #undef SYNC_IP
3242 #undef UNPACK_8_8_8
3243 #undef UNPACK_8_16
3244 #undef UNPACK_16_8
3245 #undef UNPACK_12_12
3246 #undef UNPACK_24
3247 #undef VARIABLE_BOUNDP
3248 #undef VARIABLE_REF
3249 #undef VARIABLE_SET
3250 #undef VM_CHECK_FREE_VARIABLE
3251 #undef VM_CHECK_OBJECT
3252 #undef VM_CHECK_UNDERFLOW
3253 #undef VM_DEFINE_OP
3254 #undef VM_INSTRUCTION_TO_LABEL
3255 #undef VM_USE_HOOKS
3256 #undef VM_VALIDATE_BYTEVECTOR
3257 #undef VM_VALIDATE_PAIR
3258 #undef VM_VALIDATE_STRUCT
3259
3260 /*
3261 (defun renumber-ops ()
3262 "start from top of buffer and renumber 'VM_DEFINE_FOO (\n' sequences"
3263 (interactive "")
3264 (save-excursion
3265 (let ((counter -1)) (goto-char (point-min))
3266 (while (re-search-forward "^ *VM_DEFINE_[^ ]+ (\\([^,]+\\)," (point-max) t)
3267 (replace-match
3268 (number-to-string (setq counter (1+ counter)))
3269 t t nil 1)))))
3270 (renumber-ops)
3271 */
3272 /*
3273 Local Variables:
3274 c-file-style: "gnu"
3275 End:
3276 */
Unnamed repository; edit this file 'description' to name the repository.