Commit | Line | Data |
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27c7c630 | 1 | /* Copyright (C) 2001, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc. |
a98cef7e | 2 | * |
560b9c25 | 3 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
4 | * modify it under the terms of the GNU Lesser General Public License |
5 | * as published by the Free Software Foundation; either version 3 of | |
6 | * the License, or (at your option) any later version. | |
a98cef7e | 7 | * |
53befeb7 NJ |
8 | * This library is distributed in the hope that it will be useful, but |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
560b9c25 AW |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
11 | * Lesser General Public License for more details. | |
a98cef7e | 12 | * |
560b9c25 AW |
13 | * You should have received a copy of the GNU Lesser General Public |
14 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
16 | * 02110-1301 USA | |
560b9c25 | 17 | */ |
a98cef7e | 18 | |
510ca126 AW |
19 | /* This file is included in vm.c multiple times. */ |
20 | ||
21 | ||
20b1b913 AW |
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 | ||
8dd6bfa7 AW |
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. */ | |
eac12024 | 68 | #ifdef __GNUC__ |
8dd6bfa7 | 69 | # if defined __x86_64__ |
eac12024 AW |
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. */ | |
8dd6bfa7 AW |
73 | # define JT_REG asm ("r12") |
74 | # endif | |
eac12024 AW |
75 | #endif |
76 | ||
77 | #ifndef IP_REG | |
8dd6bfa7 | 78 | # define IP_REG |
eac12024 | 79 | #endif |
eac12024 | 80 | #ifndef FP_REG |
8dd6bfa7 | 81 | # define FP_REG |
eac12024 AW |
82 | #endif |
83 | #ifndef JT_REG | |
8dd6bfa7 | 84 | # define JT_REG |
eac12024 AW |
85 | #endif |
86 | ||
27c7c630 AW |
87 | #define VM_ASSERT(condition, handler) \ |
88 | do { \ | |
89 | if (SCM_UNLIKELY (!(condition))) \ | |
90 | { \ | |
91 | SYNC_ALL(); \ | |
92 | handler; \ | |
93 | } \ | |
94 | } while (0) | |
eac12024 AW |
95 | |
96 | #ifdef VM_ENABLE_ASSERTIONS | |
97 | # define ASSERT(condition) VM_ASSERT (condition, abort()) | |
98 | #else | |
99 | # define ASSERT(condition) | |
100 | #endif | |
101 | ||
c850a0ff AW |
102 | #if VM_USE_HOOKS |
103 | #define RUN_HOOK(h, args, n) \ | |
104 | do { \ | |
105 | if (SCM_UNLIKELY (vp->trace_level > 0)) \ | |
106 | { \ | |
107 | SYNC_REGISTER (); \ | |
108 | vm_dispatch_hook (vm, h, args, n); \ | |
109 | } \ | |
110 | } while (0) | |
111 | #else | |
112 | #define RUN_HOOK(h, args, n) | |
113 | #endif | |
114 | #define RUN_HOOK0(h) RUN_HOOK(h, NULL, 0) | |
115 | ||
116 | #define APPLY_HOOK() \ | |
117 | RUN_HOOK0 (SCM_VM_APPLY_HOOK) | |
118 | #define PUSH_CONTINUATION_HOOK() \ | |
119 | RUN_HOOK0 (SCM_VM_PUSH_CONTINUATION_HOOK) | |
b636cdb0 AW |
120 | #define POP_CONTINUATION_HOOK(old_fp) \ |
121 | RUN_HOOK (SCM_VM_POP_CONTINUATION_HOOK, \ | |
122 | &SCM_FRAME_LOCAL (old_fp, 1), \ | |
123 | SCM_FRAME_NUM_LOCALS (old_fp, vp->sp) - 1) | |
c850a0ff AW |
124 | #define NEXT_HOOK() \ |
125 | RUN_HOOK0 (SCM_VM_NEXT_HOOK) | |
b636cdb0 AW |
126 | #define ABORT_CONTINUATION_HOOK() \ |
127 | RUN_HOOK (SCM_VM_ABORT_CONTINUATION_HOOK, \ | |
128 | LOCAL_ADDRESS (1), \ | |
129 | FRAME_LOCALS_COUNT () - 1) | |
c850a0ff AW |
130 | #define RESTORE_CONTINUATION_HOOK() \ |
131 | RUN_HOOK0 (SCM_VM_RESTORE_CONTINUATION_HOOK) | |
132 | ||
133 | #define VM_HANDLE_INTERRUPTS \ | |
134 | SCM_ASYNC_TICK_WITH_CODE (current_thread, SYNC_REGISTER ()) | |
135 | ||
136 | ||
510ca126 AW |
137 | /* Virtual Machine |
138 | ||
139 | This is Guile's new virtual machine. When I say "new", I mean | |
140 | relative to the current virtual machine. At some point it will | |
141 | become "the" virtual machine, and we'll delete this paragraph. As | |
142 | such, the rest of the comments speak as if there's only one VM. | |
7396d216 AW |
143 | In difference from the old VM, local 0 is the procedure, and the |
144 | first argument is local 1. At some point in the future we should | |
145 | change the fp to point to the procedure and not to local 1. | |
510ca126 AW |
146 | |
147 | <more overview here> | |
148 | */ | |
149 | ||
150 | ||
151 | /* The VM has three state bits: the instruction pointer (IP), the frame | |
152 | pointer (FP), and the top-of-stack pointer (SP). We cache the first | |
153 | two of these in machine registers, local to the VM, because they are | |
154 | used extensively by the VM. As the SP is used more by code outside | |
155 | the VM than by the VM itself, we don't bother caching it locally. | |
156 | ||
157 | Since the FP changes infrequently, relative to the IP, we keep vp->fp | |
158 | in sync with the local FP. This would be a big lose for the IP, | |
159 | though, so instead of updating vp->ip all the time, we call SYNC_IP | |
160 | whenever we would need to know the IP of the top frame. In practice, | |
161 | we need to SYNC_IP whenever we call out of the VM to a function that | |
162 | would like to walk the stack, perhaps as the result of an | |
163 | exception. */ | |
164 | ||
165 | #define SYNC_IP() \ | |
9121d9f1 | 166 | vp->ip = (ip) |
510ca126 AW |
167 | |
168 | #define SYNC_REGISTER() \ | |
169 | SYNC_IP() | |
170 | #define SYNC_BEFORE_GC() /* Only SP and FP needed to trace GC */ | |
171 | #define SYNC_ALL() /* FP already saved */ \ | |
172 | SYNC_IP() | |
173 | ||
174 | #define CHECK_OVERFLOW(sp) \ | |
175 | do { \ | |
176 | if (SCM_UNLIKELY ((sp) >= stack_limit)) \ | |
177 | vm_error_stack_overflow (vp); \ | |
178 | } while (0) | |
179 | ||
180 | /* Reserve stack space for a frame. Will check that there is sufficient | |
b636cdb0 AW |
181 | stack space for N locals, including the procedure. Invoke after |
182 | preparing the new frame and setting the fp and ip. */ | |
510ca126 AW |
183 | #define ALLOC_FRAME(n) \ |
184 | do { \ | |
b636cdb0 AW |
185 | SCM *new_sp = vp->sp = LOCAL_ADDRESS (n - 1); \ |
186 | CHECK_OVERFLOW (new_sp); \ | |
510ca126 AW |
187 | } while (0) |
188 | ||
189 | /* Reset the current frame to hold N locals. Used when we know that no | |
190 | stack expansion is needed. */ | |
191 | #define RESET_FRAME(n) \ | |
192 | do { \ | |
b636cdb0 | 193 | vp->sp = LOCAL_ADDRESS (n - 1); \ |
510ca126 AW |
194 | } while (0) |
195 | ||
b636cdb0 AW |
196 | /* Compute the number of locals in the frame. At a call, this is equal |
197 | to the number of actual arguments when a function is first called, | |
198 | plus one for the function. */ | |
199 | #define FRAME_LOCALS_COUNT_FROM(slot) \ | |
200 | (vp->sp + 1 - LOCAL_ADDRESS (slot)) | |
201 | #define FRAME_LOCALS_COUNT() \ | |
202 | FRAME_LOCALS_COUNT_FROM (0) | |
510ca126 AW |
203 | |
204 | /* Restore registers after returning from a frame. */ | |
205 | #define RESTORE_FRAME() \ | |
206 | do { \ | |
207 | } while (0) | |
208 | ||
209 | ||
210 | #define CACHE_REGISTER() \ | |
211 | do { \ | |
212 | ip = (scm_t_uint32 *) vp->ip; \ | |
213 | fp = vp->fp; \ | |
214 | } while (0) | |
215 | ||
216 | #ifdef HAVE_LABELS_AS_VALUES | |
217 | # define BEGIN_DISPATCH_SWITCH /* */ | |
218 | # define END_DISPATCH_SWITCH /* */ | |
219 | # define NEXT(n) \ | |
220 | do \ | |
221 | { \ | |
222 | ip += n; \ | |
223 | NEXT_HOOK (); \ | |
224 | op = *ip; \ | |
225 | goto *jump_table[op & 0xff]; \ | |
226 | } \ | |
227 | while (0) | |
228 | # define VM_DEFINE_OP(opcode, tag, name, meta) \ | |
229 | op_##tag: | |
230 | #else | |
231 | # define BEGIN_DISPATCH_SWITCH \ | |
232 | vm_start: \ | |
233 | NEXT_HOOK (); \ | |
234 | op = *ip; \ | |
235 | switch (op & 0xff) \ | |
236 | { | |
237 | # define END_DISPATCH_SWITCH \ | |
238 | default: \ | |
239 | goto vm_error_bad_instruction; \ | |
240 | } | |
241 | # define NEXT(n) \ | |
242 | do \ | |
243 | { \ | |
244 | ip += n; \ | |
245 | goto vm_start; \ | |
246 | } \ | |
247 | while (0) | |
248 | # define VM_DEFINE_OP(opcode, tag, name, meta) \ | |
249 | op_##tag: \ | |
250 | case opcode: | |
251 | #endif | |
252 | ||
b636cdb0 AW |
253 | #define LOCAL_ADDRESS(i) (&SCM_FRAME_LOCAL (fp, i)) |
254 | #define LOCAL_REF(i) SCM_FRAME_LOCAL (fp, i) | |
255 | #define LOCAL_SET(i,o) SCM_FRAME_LOCAL (fp, i) = o | |
510ca126 AW |
256 | |
257 | #define VARIABLE_REF(v) SCM_VARIABLE_REF (v) | |
258 | #define VARIABLE_SET(v,o) SCM_VARIABLE_SET (v, o) | |
259 | #define VARIABLE_BOUNDP(v) (!scm_is_eq (VARIABLE_REF (v), SCM_UNDEFINED)) | |
510ca126 AW |
260 | |
261 | #define RETURN_ONE_VALUE(ret) \ | |
262 | do { \ | |
263 | SCM val = ret; \ | |
b636cdb0 | 264 | SCM *old_fp = fp; \ |
510ca126 | 265 | VM_HANDLE_INTERRUPTS; \ |
9121d9f1 | 266 | ip = SCM_FRAME_RETURN_ADDRESS (fp); \ |
510ca126 | 267 | fp = vp->fp = SCM_FRAME_DYNAMIC_LINK (fp); \ |
af95414f | 268 | /* Clear frame. */ \ |
b636cdb0 AW |
269 | old_fp[-1] = SCM_BOOL_F; \ |
270 | old_fp[-2] = SCM_BOOL_F; \ | |
af95414f | 271 | /* Leave proc. */ \ |
b636cdb0 AW |
272 | SCM_FRAME_LOCAL (old_fp, 1) = val; \ |
273 | vp->sp = &SCM_FRAME_LOCAL (old_fp, 1); \ | |
274 | POP_CONTINUATION_HOOK (old_fp); \ | |
510ca126 AW |
275 | NEXT (0); \ |
276 | } while (0) | |
277 | ||
278 | /* While we could generate the list-unrolling code here, it's fine for | |
279 | now to just tail-call (apply values vals). */ | |
280 | #define RETURN_VALUE_LIST(vals_) \ | |
281 | do { \ | |
282 | SCM vals = vals_; \ | |
283 | VM_HANDLE_INTERRUPTS; \ | |
b636cdb0 AW |
284 | fp[0] = vm_builtin_apply; \ |
285 | fp[1] = vm_builtin_values; \ | |
286 | fp[2] = vals; \ | |
7396d216 | 287 | RESET_FRAME (3); \ |
486013d6 | 288 | ip = (scm_t_uint32 *) vm_builtin_apply_code; \ |
adb8d905 | 289 | goto op_tail_apply; \ |
510ca126 AW |
290 | } while (0) |
291 | ||
292 | #define BR_NARGS(rel) \ | |
d2bd8fa8 | 293 | scm_t_uint32 expected; \ |
20b1b913 | 294 | UNPACK_24 (op, expected); \ |
510ca126 AW |
295 | if (FRAME_LOCALS_COUNT() rel expected) \ |
296 | { \ | |
297 | scm_t_int32 offset = ip[1]; \ | |
298 | offset >>= 8; /* Sign-extending shift. */ \ | |
299 | NEXT (offset); \ | |
300 | } \ | |
301 | NEXT (2) | |
302 | ||
303 | #define BR_UNARY(x, exp) \ | |
304 | scm_t_uint32 test; \ | |
305 | SCM x; \ | |
20b1b913 | 306 | UNPACK_24 (op, test); \ |
510ca126 AW |
307 | x = LOCAL_REF (test); \ |
308 | if ((ip[1] & 0x1) ? !(exp) : (exp)) \ | |
309 | { \ | |
310 | scm_t_int32 offset = ip[1]; \ | |
311 | offset >>= 8; /* Sign-extending shift. */ \ | |
312 | if (offset < 0) \ | |
313 | VM_HANDLE_INTERRUPTS; \ | |
314 | NEXT (offset); \ | |
315 | } \ | |
316 | NEXT (2) | |
317 | ||
318 | #define BR_BINARY(x, y, exp) \ | |
319 | scm_t_uint16 a, b; \ | |
320 | SCM x, y; \ | |
20b1b913 | 321 | UNPACK_12_12 (op, a, b); \ |
510ca126 AW |
322 | x = LOCAL_REF (a); \ |
323 | y = LOCAL_REF (b); \ | |
324 | if ((ip[1] & 0x1) ? !(exp) : (exp)) \ | |
325 | { \ | |
326 | scm_t_int32 offset = ip[1]; \ | |
327 | offset >>= 8; /* Sign-extending shift. */ \ | |
328 | if (offset < 0) \ | |
329 | VM_HANDLE_INTERRUPTS; \ | |
330 | NEXT (offset); \ | |
331 | } \ | |
332 | NEXT (2) | |
333 | ||
334 | #define BR_ARITHMETIC(crel,srel) \ | |
335 | { \ | |
336 | scm_t_uint16 a, b; \ | |
337 | SCM x, y; \ | |
20b1b913 | 338 | UNPACK_12_12 (op, a, b); \ |
510ca126 AW |
339 | x = LOCAL_REF (a); \ |
340 | y = LOCAL_REF (b); \ | |
341 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) \ | |
342 | { \ | |
343 | scm_t_signed_bits x_bits = SCM_UNPACK (x); \ | |
344 | scm_t_signed_bits y_bits = SCM_UNPACK (y); \ | |
af95414f | 345 | if ((ip[1] & 0x1) ? !(x_bits crel y_bits) : (x_bits crel y_bits)) \ |
510ca126 AW |
346 | { \ |
347 | scm_t_int32 offset = ip[1]; \ | |
348 | offset >>= 8; /* Sign-extending shift. */ \ | |
349 | if (offset < 0) \ | |
350 | VM_HANDLE_INTERRUPTS; \ | |
351 | NEXT (offset); \ | |
352 | } \ | |
353 | NEXT (2); \ | |
354 | } \ | |
355 | else \ | |
356 | { \ | |
af95414f | 357 | SCM res; \ |
510ca126 | 358 | SYNC_IP (); \ |
af95414f AW |
359 | res = srel (x, y); \ |
360 | if ((ip[1] & 0x1) ? scm_is_false (res) : scm_is_true (res)) \ | |
510ca126 AW |
361 | { \ |
362 | scm_t_int32 offset = ip[1]; \ | |
363 | offset >>= 8; /* Sign-extending shift. */ \ | |
364 | if (offset < 0) \ | |
365 | VM_HANDLE_INTERRUPTS; \ | |
366 | NEXT (offset); \ | |
367 | } \ | |
368 | NEXT (2); \ | |
369 | } \ | |
370 | } | |
371 | ||
372 | #define ARGS1(a1) \ | |
373 | scm_t_uint16 dst, src; \ | |
374 | SCM a1; \ | |
20b1b913 | 375 | UNPACK_12_12 (op, dst, src); \ |
510ca126 AW |
376 | a1 = LOCAL_REF (src) |
377 | #define ARGS2(a1, a2) \ | |
378 | scm_t_uint8 dst, src1, src2; \ | |
379 | SCM a1, a2; \ | |
20b1b913 | 380 | UNPACK_8_8_8 (op, dst, src1, src2); \ |
510ca126 AW |
381 | a1 = LOCAL_REF (src1); \ |
382 | a2 = LOCAL_REF (src2) | |
383 | #define RETURN(x) \ | |
384 | do { LOCAL_SET (dst, x); NEXT (1); } while (0) | |
385 | ||
386 | /* The maximum/minimum tagged integers. */ | |
d2295ba5 MW |
387 | #define INUM_MAX \ |
388 | ((scm_t_signed_bits) SCM_UNPACK (SCM_I_MAKINUM (SCM_MOST_POSITIVE_FIXNUM))) | |
389 | #define INUM_MIN \ | |
390 | ((scm_t_signed_bits) SCM_UNPACK (SCM_I_MAKINUM (SCM_MOST_NEGATIVE_FIXNUM))) | |
391 | #define INUM_STEP \ | |
392 | ((scm_t_signed_bits) SCM_UNPACK (SCM_INUM1) \ | |
393 | - (scm_t_signed_bits) SCM_UNPACK (SCM_INUM0)) | |
510ca126 AW |
394 | |
395 | #define BINARY_INTEGER_OP(CFUNC,SFUNC) \ | |
396 | { \ | |
397 | ARGS2 (x, y); \ | |
398 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) \ | |
399 | { \ | |
400 | scm_t_int64 n = SCM_I_INUM (x) CFUNC SCM_I_INUM (y); \ | |
401 | if (SCM_FIXABLE (n)) \ | |
402 | RETURN (SCM_I_MAKINUM (n)); \ | |
403 | } \ | |
404 | SYNC_IP (); \ | |
405 | RETURN (SFUNC (x, y)); \ | |
406 | } | |
407 | ||
408 | #define VM_VALIDATE_PAIR(x, proc) \ | |
409 | VM_ASSERT (scm_is_pair (x), vm_error_not_a_pair (proc, x)) | |
410 | ||
411 | #define VM_VALIDATE_STRUCT(obj, proc) \ | |
412 | VM_ASSERT (SCM_STRUCTP (obj), vm_error_not_a_pair (proc, obj)) | |
413 | ||
414 | #define VM_VALIDATE_BYTEVECTOR(x, proc) \ | |
415 | VM_ASSERT (SCM_BYTEVECTOR_P (x), vm_error_not_a_bytevector (proc, x)) | |
416 | ||
417 | /* Return true (non-zero) if PTR has suitable alignment for TYPE. */ | |
418 | #define ALIGNED_P(ptr, type) \ | |
419 | ((scm_t_uintptr) (ptr) % alignof_type (type) == 0) | |
420 | ||
421 | static SCM | |
f42cfbf0 | 422 | VM_NAME (SCM vm, SCM program, SCM *argv, size_t nargs_) |
510ca126 AW |
423 | { |
424 | /* Instruction pointer: A pointer to the opcode that is currently | |
425 | running. */ | |
426 | register scm_t_uint32 *ip IP_REG; | |
427 | ||
428 | /* Frame pointer: A pointer into the stack, off of which we index | |
429 | arguments and local variables. Pushed at function calls, popped on | |
430 | returns. */ | |
431 | register SCM *fp FP_REG; | |
432 | ||
433 | /* Current opcode: A cache of *ip. */ | |
434 | register scm_t_uint32 op; | |
435 | ||
436 | /* Cached variables. */ | |
437 | struct scm_vm *vp = SCM_VM_DATA (vm); | |
438 | SCM *stack_limit = vp->stack_limit; /* stack limit address */ | |
439 | scm_i_thread *current_thread = SCM_I_CURRENT_THREAD; | |
440 | scm_i_jmp_buf registers; /* used for prompts */ | |
441 | ||
442 | #ifdef HAVE_LABELS_AS_VALUES | |
443 | static const void **jump_table_pointer = NULL; | |
444 | register const void **jump_table JT_REG; | |
445 | ||
446 | if (SCM_UNLIKELY (!jump_table_pointer)) | |
447 | { | |
448 | int i; | |
449 | jump_table_pointer = malloc (SCM_VM_NUM_INSTRUCTIONS * sizeof (void*)); | |
450 | for (i = 0; i < SCM_VM_NUM_INSTRUCTIONS; i++) | |
451 | jump_table_pointer[i] = &&vm_error_bad_instruction; | |
452 | #define INIT(opcode, tag, name, meta) jump_table_pointer[opcode] = &&op_##tag; | |
453 | FOR_EACH_VM_OPERATION(INIT); | |
454 | #undef INIT | |
455 | } | |
456 | ||
457 | /* Attempt to keep JUMP_TABLE_POINTER in a register. This saves one | |
458 | load instruction at each instruction dispatch. */ | |
459 | jump_table = jump_table_pointer; | |
460 | #endif | |
461 | ||
462 | if (SCM_I_SETJMP (registers)) | |
463 | { | |
464 | /* Non-local return. The values are on the stack, on a new frame | |
465 | set up to call `values' to return the values to the handler. | |
466 | Cache the VM registers back from the vp, and dispatch to the | |
467 | body of `values'. | |
468 | ||
469 | Note, at this point, we must assume that any variable local to | |
470 | vm_engine that can be assigned *has* been assigned. So we need | |
471 | to pull all our state back from the ip/fp/sp. | |
472 | */ | |
473 | CACHE_REGISTER (); | |
b636cdb0 | 474 | ABORT_CONTINUATION_HOOK (); |
510ca126 AW |
475 | NEXT (0); |
476 | } | |
477 | ||
478 | /* Load previous VM registers. */ | |
479 | CACHE_REGISTER (); | |
480 | ||
481 | VM_HANDLE_INTERRUPTS; | |
482 | ||
483 | /* Initialization */ | |
484 | { | |
485 | SCM *base; | |
486 | ||
f8085163 AW |
487 | /* Check that we have enough space: 3 words for the boot |
488 | continuation, 3 + nargs for the procedure application, and 3 for | |
510ca126 AW |
489 | setting up a new frame. */ |
490 | base = vp->sp + 1; | |
f8085163 | 491 | CHECK_OVERFLOW (vp->sp + 3 + 3 + nargs_ + 3); |
510ca126 AW |
492 | |
493 | /* Since it's possible to receive the arguments on the stack itself, | |
494 | and indeed the regular VM invokes us that way, shuffle up the | |
495 | arguments first. */ | |
496 | { | |
497 | int i; | |
498 | for (i = nargs_ - 1; i >= 0; i--) | |
f8085163 | 499 | base[6 + i] = argv[i]; |
510ca126 AW |
500 | } |
501 | ||
502 | /* Initial frame, saving previous fp and ip, with the boot | |
503 | continuation. */ | |
504 | base[0] = SCM_PACK (fp); /* dynamic link */ | |
f8085163 | 505 | base[1] = SCM_PACK (ip); /* ra */ |
ef6b7f71 | 506 | base[2] = vm_boot_continuation; |
b636cdb0 | 507 | fp = &base[2]; |
ef6b7f71 | 508 | ip = (scm_t_uint32 *) vm_boot_continuation_code; |
510ca126 AW |
509 | |
510 | /* MV-call frame, function & arguments */ | |
f8085163 AW |
511 | base[3] = SCM_PACK (fp); /* dynamic link */ |
512 | base[4] = SCM_PACK (ip); /* ra */ | |
513 | base[5] = program; | |
b636cdb0 | 514 | fp = vp->fp = &base[5]; |
7396d216 | 515 | RESET_FRAME (nargs_ + 1); |
510ca126 AW |
516 | } |
517 | ||
518 | apply: | |
d798a895 | 519 | while (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp))) |
510ca126 | 520 | { |
510ca126 AW |
521 | SCM proc = SCM_FRAME_PROGRAM (fp); |
522 | ||
523 | if (SCM_STRUCTP (proc) && SCM_STRUCT_APPLICABLE_P (proc)) | |
524 | { | |
b636cdb0 | 525 | LOCAL_SET (0, SCM_STRUCT_PROCEDURE (proc)); |
510ca126 AW |
526 | continue; |
527 | } | |
528 | if (SCM_HAS_TYP7 (proc, scm_tc7_smob) && SCM_SMOB_APPLICABLE_P (proc)) | |
529 | { | |
530 | scm_t_uint32 n = FRAME_LOCALS_COUNT(); | |
531 | ||
9d87158f AW |
532 | /* Shuffle args up. */ |
533 | RESET_FRAME (n + 1); | |
510ca126 AW |
534 | while (n--) |
535 | LOCAL_SET (n + 1, LOCAL_REF (n)); | |
510ca126 | 536 | |
9d87158f | 537 | LOCAL_SET (0, SCM_SMOB_DESCRIPTOR (proc).apply_trampoline); |
510ca126 AW |
538 | continue; |
539 | } | |
540 | ||
541 | SYNC_IP(); | |
542 | vm_error_wrong_type_apply (proc); | |
510ca126 AW |
543 | } |
544 | ||
545 | /* Let's go! */ | |
d798a895 | 546 | ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); |
510ca126 AW |
547 | NEXT (0); |
548 | ||
549 | BEGIN_DISPATCH_SWITCH; | |
550 | ||
551 | ||
552 | \f | |
553 | ||
554 | /* | |
555 | * Call and return | |
556 | */ | |
557 | ||
558 | /* halt _:24 | |
559 | * | |
af95414f | 560 | * Bring the VM to a halt, returning all the values from the stack. |
510ca126 AW |
561 | */ |
562 | VM_DEFINE_OP (0, halt, "halt", OP1 (U8_X24)) | |
563 | { | |
f8085163 | 564 | /* Boot closure in r0, empty frame in r1/r2, proc in r3, values from r4. */ |
510ca126 | 565 | |
b636cdb0 AW |
566 | scm_t_uint32 nvals = FRAME_LOCALS_COUNT_FROM (4); |
567 | SCM ret; | |
568 | ||
af95414f | 569 | if (nvals == 1) |
f8085163 | 570 | ret = LOCAL_REF (4); |
af95414f AW |
571 | else |
572 | { | |
573 | scm_t_uint32 n; | |
574 | ret = SCM_EOL; | |
575 | SYNC_BEFORE_GC(); | |
576 | for (n = nvals; n > 0; n--) | |
f8085163 | 577 | ret = scm_cons (LOCAL_REF (4 + n - 1), ret); |
af95414f AW |
578 | ret = scm_values (ret); |
579 | } | |
510ca126 AW |
580 | |
581 | vp->ip = SCM_FRAME_RETURN_ADDRESS (fp); | |
b636cdb0 | 582 | vp->sp = SCM_FRAME_PREVIOUS_SP (fp); |
510ca126 AW |
583 | vp->fp = SCM_FRAME_DYNAMIC_LINK (fp); |
584 | ||
af95414f | 585 | return ret; |
286a0fb3 AW |
586 | } |
587 | ||
af95414f | 588 | /* call proc:24 _:8 nlocals:24 |
286a0fb3 | 589 | * |
af95414f AW |
590 | * Call a procedure. PROC is the local corresponding to a procedure. |
591 | * The three values below PROC will be overwritten by the saved call | |
592 | * frame data. The new frame will have space for NLOCALS locals: one | |
593 | * for the procedure, and the rest for the arguments which should | |
594 | * already have been pushed on. | |
510ca126 | 595 | * |
af95414f AW |
596 | * When the call returns, execution proceeds with the next |
597 | * instruction. There may be any number of values on the return | |
598 | * stack; the precise number can be had by subtracting the address of | |
599 | * PROC from the post-call SP. | |
510ca126 | 600 | */ |
af95414f | 601 | VM_DEFINE_OP (1, call, "call", OP2 (U8_U24, X8_U24)) |
510ca126 | 602 | { |
af95414f | 603 | scm_t_uint32 proc, nlocals; |
510ca126 AW |
604 | SCM *old_fp = fp; |
605 | ||
20b1b913 AW |
606 | UNPACK_24 (op, proc); |
607 | UNPACK_24 (ip[1], nlocals); | |
510ca126 AW |
608 | |
609 | VM_HANDLE_INTERRUPTS; | |
610 | ||
af95414f | 611 | fp = vp->fp = old_fp + proc; |
510ca126 | 612 | SCM_FRAME_SET_DYNAMIC_LINK (fp, old_fp); |
9121d9f1 | 613 | SCM_FRAME_SET_RETURN_ADDRESS (fp, ip + 2); |
510ca126 | 614 | |
af95414f AW |
615 | RESET_FRAME (nlocals); |
616 | ||
510ca126 AW |
617 | PUSH_CONTINUATION_HOOK (); |
618 | APPLY_HOOK (); | |
619 | ||
d798a895 | 620 | if (SCM_UNLIKELY (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp)))) |
510ca126 AW |
621 | goto apply; |
622 | ||
d798a895 | 623 | ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); |
510ca126 AW |
624 | NEXT (0); |
625 | } | |
626 | ||
af95414f | 627 | /* tail-call nlocals:24 |
510ca126 | 628 | * |
af95414f | 629 | * Tail-call a procedure. Requires that the procedure and all of the |
486013d6 AW |
630 | * arguments have already been shuffled into position. Will reset the |
631 | * frame to NLOCALS. | |
510ca126 | 632 | */ |
af95414f | 633 | VM_DEFINE_OP (2, tail_call, "tail-call", OP1 (U8_U24)) |
510ca126 | 634 | { |
af95414f AW |
635 | scm_t_uint32 nlocals; |
636 | ||
20b1b913 | 637 | UNPACK_24 (op, nlocals); |
510ca126 AW |
638 | |
639 | VM_HANDLE_INTERRUPTS; | |
640 | ||
af95414f | 641 | RESET_FRAME (nlocals); |
486013d6 AW |
642 | |
643 | APPLY_HOOK (); | |
644 | ||
d798a895 | 645 | if (SCM_UNLIKELY (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp)))) |
486013d6 AW |
646 | goto apply; |
647 | ||
d798a895 | 648 | ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); |
486013d6 AW |
649 | NEXT (0); |
650 | } | |
651 | ||
652 | /* tail-call/shuffle from:24 | |
653 | * | |
654 | * Tail-call a procedure. The procedure should already be set to slot | |
655 | * 0. The rest of the args are taken from the frame, starting at | |
656 | * FROM, shuffled down to start at slot 0. This is part of the | |
657 | * implementation of the call-with-values builtin. | |
658 | */ | |
659 | VM_DEFINE_OP (3, tail_call_shuffle, "tail-call/shuffle", OP1 (U8_U24)) | |
660 | { | |
661 | scm_t_uint32 n, from, nlocals; | |
662 | ||
20b1b913 | 663 | UNPACK_24 (op, from); |
486013d6 AW |
664 | |
665 | VM_HANDLE_INTERRUPTS; | |
666 | ||
667 | VM_ASSERT (from > 0, abort ()); | |
668 | nlocals = FRAME_LOCALS_COUNT (); | |
669 | ||
670 | for (n = 0; from + n < nlocals; n++) | |
671 | LOCAL_SET (n + 1, LOCAL_REF (from + n)); | |
672 | ||
673 | RESET_FRAME (n + 1); | |
674 | ||
510ca126 AW |
675 | APPLY_HOOK (); |
676 | ||
d798a895 | 677 | if (SCM_UNLIKELY (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp)))) |
510ca126 AW |
678 | goto apply; |
679 | ||
d798a895 | 680 | ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); |
510ca126 AW |
681 | NEXT (0); |
682 | } | |
683 | ||
af95414f | 684 | /* receive dst:12 proc:12 _:8 nlocals:24 |
510ca126 | 685 | * |
af95414f AW |
686 | * Receive a single return value from a call whose procedure was in |
687 | * PROC, asserting that the call actually returned at least one | |
688 | * value. Afterwards, resets the frame to NLOCALS locals. | |
510ca126 | 689 | */ |
486013d6 | 690 | VM_DEFINE_OP (4, receive, "receive", OP2 (U8_U12_U12, X8_U24) | OP_DST) |
510ca126 | 691 | { |
af95414f AW |
692 | scm_t_uint16 dst, proc; |
693 | scm_t_uint32 nlocals; | |
20b1b913 AW |
694 | UNPACK_12_12 (op, dst, proc); |
695 | UNPACK_24 (ip[1], nlocals); | |
af95414f AW |
696 | VM_ASSERT (FRAME_LOCALS_COUNT () > proc + 1, vm_error_no_values ()); |
697 | LOCAL_SET (dst, LOCAL_REF (proc + 1)); | |
698 | RESET_FRAME (nlocals); | |
699 | NEXT (2); | |
700 | } | |
510ca126 | 701 | |
82f4bac4 | 702 | /* receive-values proc:24 allow-extra?:1 _:7 nvalues:24 |
af95414f AW |
703 | * |
704 | * Receive a return of multiple values from a call whose procedure was | |
705 | * in PROC. If fewer than NVALUES values were returned, signal an | |
82f4bac4 AW |
706 | * error. Unless ALLOW-EXTRA? is true, require that the number of |
707 | * return values equals NVALUES exactly. After receive-values has | |
708 | * run, the values can be copied down via `mov'. | |
af95414f | 709 | */ |
486013d6 | 710 | VM_DEFINE_OP (5, receive_values, "receive-values", OP2 (U8_U24, B1_X7_U24)) |
af95414f AW |
711 | { |
712 | scm_t_uint32 proc, nvalues; | |
20b1b913 AW |
713 | UNPACK_24 (op, proc); |
714 | UNPACK_24 (ip[1], nvalues); | |
82f4bac4 AW |
715 | if (ip[1] & 0x1) |
716 | VM_ASSERT (FRAME_LOCALS_COUNT () > proc + nvalues, | |
717 | vm_error_not_enough_values ()); | |
718 | else | |
186b56c4 | 719 | VM_ASSERT (FRAME_LOCALS_COUNT () == proc + 1 + nvalues, |
82f4bac4 | 720 | vm_error_wrong_number_of_values (nvalues)); |
af95414f | 721 | NEXT (2); |
510ca126 AW |
722 | } |
723 | ||
724 | /* return src:24 | |
725 | * | |
726 | * Return a value. | |
727 | */ | |
486013d6 | 728 | VM_DEFINE_OP (6, return, "return", OP1 (U8_U24)) |
510ca126 AW |
729 | { |
730 | scm_t_uint32 src; | |
20b1b913 | 731 | UNPACK_24 (op, src); |
510ca126 AW |
732 | RETURN_ONE_VALUE (LOCAL_REF (src)); |
733 | } | |
734 | ||
84cc4127 | 735 | /* return-values _:24 |
510ca126 AW |
736 | * |
737 | * Return a number of values from a call frame. This opcode | |
738 | * corresponds to an application of `values' in tail position. As | |
af95414f AW |
739 | * with tail calls, we expect that the values have already been |
740 | * shuffled down to a contiguous array starting at slot 1. | |
84cc4127 | 741 | * We also expect the frame has already been reset. |
510ca126 | 742 | */ |
486013d6 | 743 | VM_DEFINE_OP (7, return_values, "return-values", OP1 (U8_X24)) |
510ca126 | 744 | { |
b636cdb0 | 745 | SCM *old_fp = fp; |
af95414f | 746 | |
af95414f | 747 | VM_HANDLE_INTERRUPTS; |
9121d9f1 | 748 | ip = SCM_FRAME_RETURN_ADDRESS (fp); |
af95414f AW |
749 | fp = vp->fp = SCM_FRAME_DYNAMIC_LINK (fp); |
750 | ||
751 | /* Clear stack frame. */ | |
b636cdb0 AW |
752 | old_fp[-1] = SCM_BOOL_F; |
753 | old_fp[-2] = SCM_BOOL_F; | |
af95414f | 754 | |
b636cdb0 | 755 | POP_CONTINUATION_HOOK (old_fp); |
af95414f AW |
756 | |
757 | NEXT (0); | |
510ca126 AW |
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 | */ | |
486013d6 | 774 | VM_DEFINE_OP (8, subr_call, "subr-call", OP1 (U8_U24)) |
510ca126 AW |
775 | { |
776 | scm_t_uint32 ptr_idx; | |
777 | SCM pointer, ret; | |
778 | SCM (*subr)(); | |
779 | ||
20b1b913 | 780 | UNPACK_24 (op, ptr_idx); |
510ca126 | 781 | |
d798a895 | 782 | pointer = SCM_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (0), ptr_idx); |
510ca126 AW |
783 | subr = SCM_POINTER_VALUE (pointer); |
784 | ||
785 | VM_HANDLE_INTERRUPTS; | |
786 | SYNC_IP (); | |
787 | ||
b636cdb0 | 788 | switch (FRAME_LOCALS_COUNT_FROM (1)) |
510ca126 AW |
789 | { |
790 | case 0: | |
791 | ret = subr (); | |
792 | break; | |
793 | case 1: | |
b636cdb0 | 794 | ret = subr (fp[1]); |
510ca126 AW |
795 | break; |
796 | case 2: | |
b636cdb0 | 797 | ret = subr (fp[1], fp[2]); |
510ca126 AW |
798 | break; |
799 | case 3: | |
b636cdb0 | 800 | ret = subr (fp[1], fp[2], fp[3]); |
510ca126 AW |
801 | break; |
802 | case 4: | |
b636cdb0 | 803 | ret = subr (fp[1], fp[2], fp[3], fp[4]); |
510ca126 AW |
804 | break; |
805 | case 5: | |
b636cdb0 | 806 | ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5]); |
510ca126 AW |
807 | break; |
808 | case 6: | |
b636cdb0 | 809 | ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5], fp[6]); |
510ca126 AW |
810 | break; |
811 | case 7: | |
b636cdb0 | 812 | ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5], fp[6], fp[7]); |
510ca126 AW |
813 | break; |
814 | case 8: | |
b636cdb0 | 815 | ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5], fp[6], fp[7], fp[8]); |
510ca126 AW |
816 | break; |
817 | case 9: | |
b636cdb0 | 818 | ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5], fp[6], fp[7], fp[8], fp[9]); |
510ca126 AW |
819 | break; |
820 | case 10: | |
b636cdb0 | 821 | ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5], fp[6], fp[7], fp[8], fp[9], fp[10]); |
510ca126 AW |
822 | break; |
823 | default: | |
824 | abort (); | |
825 | } | |
826 | ||
827 | // NULLSTACK_FOR_NONLOCAL_EXIT (); | |
828 | ||
829 | if (SCM_UNLIKELY (SCM_VALUESP (ret))) | |
830 | /* multiple values returned to continuation */ | |
831 | RETURN_VALUE_LIST (scm_struct_ref (ret, SCM_INUM0)); | |
832 | else | |
833 | RETURN_ONE_VALUE (ret); | |
834 | } | |
835 | ||
836 | /* foreign-call cif-idx:12 ptr-idx:12 | |
837 | * | |
838 | * Call a foreign function. Fetch the CIF and foreign pointer from | |
839 | * CIF-IDX and PTR-IDX, both free variables. Return from the calling | |
840 | * frame. Arguments are taken from the stack. This instruction is | |
841 | * part of the trampolines created by the FFI, and is not generated by | |
842 | * the compiler. | |
843 | */ | |
486013d6 | 844 | VM_DEFINE_OP (9, foreign_call, "foreign-call", OP1 (U8_U12_U12)) |
510ca126 AW |
845 | { |
846 | scm_t_uint16 cif_idx, ptr_idx; | |
7396d216 | 847 | SCM closure, cif, pointer, ret; |
510ca126 | 848 | |
20b1b913 | 849 | UNPACK_12_12 (op, cif_idx, ptr_idx); |
510ca126 | 850 | |
7396d216 | 851 | closure = LOCAL_REF (0); |
d798a895 AW |
852 | cif = SCM_PROGRAM_FREE_VARIABLE_REF (closure, cif_idx); |
853 | pointer = SCM_PROGRAM_FREE_VARIABLE_REF (closure, ptr_idx); | |
510ca126 AW |
854 | |
855 | SYNC_IP (); | |
856 | VM_HANDLE_INTERRUPTS; | |
857 | ||
858 | // FIXME: separate args | |
b636cdb0 | 859 | ret = scm_i_foreign_call (scm_cons (cif, pointer), LOCAL_ADDRESS (1)); |
510ca126 AW |
860 | |
861 | // NULLSTACK_FOR_NONLOCAL_EXIT (); | |
862 | ||
863 | if (SCM_UNLIKELY (SCM_VALUESP (ret))) | |
864 | /* multiple values returned to continuation */ | |
865 | RETURN_VALUE_LIST (scm_struct_ref (ret, SCM_INUM0)); | |
866 | else | |
867 | RETURN_ONE_VALUE (ret); | |
868 | } | |
869 | ||
870 | /* continuation-call contregs:24 | |
871 | * | |
872 | * Return to a continuation, nonlocally. The arguments to the | |
873 | * continuation are taken from the stack. CONTREGS is a free variable | |
874 | * containing the reified continuation. This instruction is part of | |
875 | * the implementation of undelimited continuations, and is not | |
876 | * generated by the compiler. | |
877 | */ | |
486013d6 | 878 | VM_DEFINE_OP (10, continuation_call, "continuation-call", OP1 (U8_U24)) |
510ca126 AW |
879 | { |
880 | SCM contregs; | |
881 | scm_t_uint32 contregs_idx; | |
882 | ||
20b1b913 | 883 | UNPACK_24 (op, contregs_idx); |
510ca126 | 884 | |
7396d216 | 885 | contregs = |
d798a895 | 886 | SCM_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (0), contregs_idx); |
510ca126 AW |
887 | |
888 | SYNC_IP (); | |
889 | scm_i_check_continuation (contregs); | |
890 | vm_return_to_continuation (scm_i_contregs_vm (contregs), | |
891 | scm_i_contregs_vm_cont (contregs), | |
b636cdb0 AW |
892 | FRAME_LOCALS_COUNT_FROM (1), |
893 | LOCAL_ADDRESS (1)); | |
510ca126 AW |
894 | scm_i_reinstate_continuation (contregs); |
895 | ||
896 | /* no NEXT */ | |
897 | abort (); | |
898 | } | |
899 | ||
900 | /* compose-continuation cont:24 | |
901 | * | |
902 | * Compose a partial continution with the current continuation. The | |
903 | * arguments to the continuation are taken from the stack. CONT is a | |
904 | * free variable containing the reified continuation. This | |
905 | * instruction is part of the implementation of partial continuations, | |
906 | * and is not generated by the compiler. | |
907 | */ | |
486013d6 | 908 | VM_DEFINE_OP (11, compose_continuation, "compose-continuation", OP1 (U8_U24)) |
510ca126 AW |
909 | { |
910 | SCM vmcont; | |
911 | scm_t_uint32 cont_idx; | |
912 | ||
20b1b913 | 913 | UNPACK_24 (op, cont_idx); |
d798a895 | 914 | vmcont = SCM_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (0), cont_idx); |
510ca126 AW |
915 | |
916 | SYNC_IP (); | |
917 | VM_ASSERT (SCM_VM_CONT_REWINDABLE_P (vmcont), | |
918 | vm_error_continuation_not_rewindable (vmcont)); | |
b636cdb0 AW |
919 | vm_reinstate_partial_continuation (vm, vmcont, FRAME_LOCALS_COUNT_FROM (1), |
920 | LOCAL_ADDRESS (1), | |
510ca126 AW |
921 | ¤t_thread->dynstack, |
922 | ®isters); | |
923 | CACHE_REGISTER (); | |
924 | NEXT (0); | |
925 | } | |
926 | ||
adb8d905 | 927 | /* tail-apply _:24 |
510ca126 AW |
928 | * |
929 | * Tail-apply the procedure in local slot 0 to the rest of the | |
930 | * arguments. This instruction is part of the implementation of | |
931 | * `apply', and is not generated by the compiler. | |
932 | */ | |
486013d6 | 933 | VM_DEFINE_OP (12, tail_apply, "tail-apply", OP1 (U8_X24)) |
510ca126 | 934 | { |
e93c0430 | 935 | int i, list_idx, list_len, nlocals; |
510ca126 AW |
936 | SCM list; |
937 | ||
938 | VM_HANDLE_INTERRUPTS; | |
939 | ||
e93c0430 AW |
940 | nlocals = FRAME_LOCALS_COUNT (); |
941 | // At a minimum, there should be apply, f, and the list. | |
942 | VM_ASSERT (nlocals >= 3, abort ()); | |
943 | list_idx = nlocals - 1; | |
510ca126 AW |
944 | list = LOCAL_REF (list_idx); |
945 | list_len = scm_ilength (list); | |
946 | ||
947 | VM_ASSERT (list_len >= 0, vm_error_apply_to_non_list (list)); | |
948 | ||
e93c0430 AW |
949 | nlocals = nlocals - 2 + list_len; |
950 | ALLOC_FRAME (nlocals); | |
510ca126 | 951 | |
e93c0430 AW |
952 | for (i = 1; i < list_idx; i++) |
953 | LOCAL_SET (i - 1, LOCAL_REF (i)); | |
510ca126 AW |
954 | |
955 | /* Null out these slots, just in case there are less than 2 elements | |
956 | in the list. */ | |
7396d216 AW |
957 | LOCAL_SET (list_idx - 1, SCM_UNDEFINED); |
958 | LOCAL_SET (list_idx, SCM_UNDEFINED); | |
510ca126 AW |
959 | |
960 | for (i = 0; i < list_len; i++, list = SCM_CDR (list)) | |
7396d216 | 961 | LOCAL_SET (list_idx - 1 + i, SCM_CAR (list)); |
510ca126 AW |
962 | |
963 | APPLY_HOOK (); | |
964 | ||
d798a895 | 965 | if (SCM_UNLIKELY (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp)))) |
510ca126 AW |
966 | goto apply; |
967 | ||
d798a895 | 968 | ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); |
510ca126 AW |
969 | NEXT (0); |
970 | } | |
971 | ||
972 | /* call/cc _:24 | |
973 | * | |
974 | * Capture the current continuation, and tail-apply the procedure in | |
d691ac20 | 975 | * local slot 1 to it. This instruction is part of the implementation |
510ca126 AW |
976 | * of `call/cc', and is not generated by the compiler. |
977 | */ | |
486013d6 | 978 | VM_DEFINE_OP (13, call_cc, "call/cc", OP1 (U8_X24)) |
510ca126 AW |
979 | { |
980 | SCM vm_cont, cont; | |
981 | scm_t_dynstack *dynstack; | |
d691ac20 | 982 | int first; |
510ca126 AW |
983 | |
984 | VM_HANDLE_INTERRUPTS; | |
985 | ||
986 | SYNC_IP (); | |
987 | dynstack = scm_dynstack_capture_all (¤t_thread->dynstack); | |
988 | vm_cont = scm_i_vm_capture_stack (vp->stack_base, | |
989 | SCM_FRAME_DYNAMIC_LINK (fp), | |
b636cdb0 | 990 | SCM_FRAME_PREVIOUS_SP (fp), |
510ca126 | 991 | SCM_FRAME_RETURN_ADDRESS (fp), |
510ca126 AW |
992 | dynstack, |
993 | 0); | |
d691ac20 AW |
994 | /* FIXME: Seems silly to capture the registers here, when they are |
995 | already captured in the registers local, which here we are | |
996 | copying out to the heap; and likewise, the setjmp(®isters) | |
997 | code already has the non-local return handler. But oh | |
998 | well! */ | |
999 | cont = scm_i_make_continuation (&first, vm, vm_cont); | |
1000 | ||
1001 | if (first) | |
1002 | { | |
1003 | LOCAL_SET (0, LOCAL_REF (1)); | |
1004 | LOCAL_SET (1, cont); | |
1005 | RESET_FRAME (2); | |
510ca126 | 1006 | |
d691ac20 | 1007 | APPLY_HOOK (); |
510ca126 | 1008 | |
d798a895 | 1009 | if (SCM_UNLIKELY (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp)))) |
d691ac20 | 1010 | goto apply; |
510ca126 | 1011 | |
d798a895 | 1012 | ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); |
d691ac20 AW |
1013 | NEXT (0); |
1014 | } | |
1015 | else | |
1016 | { | |
1017 | CACHE_REGISTER (); | |
b636cdb0 | 1018 | ABORT_CONTINUATION_HOOK (); |
d691ac20 AW |
1019 | NEXT (0); |
1020 | } | |
510ca126 | 1021 | } |
510ca126 | 1022 | |
486013d6 AW |
1023 | /* abort _:24 |
1024 | * | |
1025 | * Abort to a prompt handler. The tag is expected in r1, and the rest | |
1026 | * of the values in the frame are returned to the prompt handler. | |
1027 | * This corresponds to a tail application of abort-to-prompt. | |
1028 | */ | |
1029 | VM_DEFINE_OP (14, abort, "abort", OP1 (U8_X24)) | |
1030 | { | |
1031 | scm_t_uint32 nlocals = FRAME_LOCALS_COUNT (); | |
1032 | ||
1033 | ASSERT (nlocals >= 2); | |
186b56c4 AW |
1034 | /* FIXME: Really we should capture the caller's registers. Until |
1035 | then, manually advance the IP so that when the prompt resumes, | |
1036 | it continues with the next instruction. */ | |
1037 | ip++; | |
486013d6 | 1038 | SYNC_IP (); |
b636cdb0 AW |
1039 | vm_abort (vm, LOCAL_REF (1), nlocals - 2, LOCAL_ADDRESS (2), |
1040 | SCM_EOL, LOCAL_ADDRESS (0), ®isters); | |
486013d6 AW |
1041 | |
1042 | /* vm_abort should not return */ | |
1043 | abort (); | |
1044 | } | |
1045 | ||
1046 | /* builtin-ref dst:12 idx:12 | |
1047 | * | |
1048 | * Load a builtin stub by index into DST. | |
1049 | */ | |
1050 | VM_DEFINE_OP (15, builtin_ref, "builtin-ref", OP1 (U8_U12_U12) | OP_DST) | |
1051 | { | |
1052 | scm_t_uint16 dst, idx; | |
1053 | ||
20b1b913 | 1054 | UNPACK_12_12 (op, dst, idx); |
486013d6 AW |
1055 | LOCAL_SET (dst, scm_vm_builtin_ref (idx)); |
1056 | ||
1057 | NEXT (1); | |
1058 | } | |
1059 | ||
510ca126 AW |
1060 | |
1061 | \f | |
1062 | ||
1063 | /* | |
1064 | * Function prologues | |
1065 | */ | |
1066 | ||
1067 | /* br-if-nargs-ne expected:24 _:8 offset:24 | |
1068 | * br-if-nargs-lt expected:24 _:8 offset:24 | |
1069 | * br-if-nargs-gt expected:24 _:8 offset:24 | |
1070 | * | |
1071 | * If the number of actual arguments is not equal, less than, or greater | |
1072 | * than EXPECTED, respectively, add OFFSET, a signed 24-bit number, to | |
1073 | * the current instruction pointer. | |
1074 | */ | |
486013d6 | 1075 | VM_DEFINE_OP (16, br_if_nargs_ne, "br-if-nargs-ne", OP2 (U8_U24, X8_L24)) |
510ca126 AW |
1076 | { |
1077 | BR_NARGS (!=); | |
1078 | } | |
486013d6 | 1079 | VM_DEFINE_OP (17, br_if_nargs_lt, "br-if-nargs-lt", OP2 (U8_U24, X8_L24)) |
510ca126 AW |
1080 | { |
1081 | BR_NARGS (<); | |
1082 | } | |
486013d6 | 1083 | VM_DEFINE_OP (18, br_if_nargs_gt, "br-if-nargs-gt", OP2 (U8_U24, X8_L24)) |
510ca126 AW |
1084 | { |
1085 | BR_NARGS (>); | |
1086 | } | |
1087 | ||
1088 | /* assert-nargs-ee expected:24 | |
1089 | * assert-nargs-ge expected:24 | |
1090 | * assert-nargs-le expected:24 | |
1091 | * | |
1092 | * If the number of actual arguments is not ==, >=, or <= EXPECTED, | |
1093 | * respectively, signal an error. | |
1094 | */ | |
486013d6 | 1095 | VM_DEFINE_OP (19, assert_nargs_ee, "assert-nargs-ee", OP1 (U8_U24)) |
510ca126 AW |
1096 | { |
1097 | scm_t_uint32 expected; | |
20b1b913 | 1098 | UNPACK_24 (op, expected); |
510ca126 AW |
1099 | VM_ASSERT (FRAME_LOCALS_COUNT () == expected, |
1100 | vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp))); | |
1101 | NEXT (1); | |
1102 | } | |
486013d6 | 1103 | VM_DEFINE_OP (20, assert_nargs_ge, "assert-nargs-ge", OP1 (U8_U24)) |
510ca126 AW |
1104 | { |
1105 | scm_t_uint32 expected; | |
20b1b913 | 1106 | UNPACK_24 (op, expected); |
510ca126 AW |
1107 | VM_ASSERT (FRAME_LOCALS_COUNT () >= expected, |
1108 | vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp))); | |
1109 | NEXT (1); | |
1110 | } | |
486013d6 | 1111 | VM_DEFINE_OP (21, assert_nargs_le, "assert-nargs-le", OP1 (U8_U24)) |
510ca126 AW |
1112 | { |
1113 | scm_t_uint32 expected; | |
20b1b913 | 1114 | UNPACK_24 (op, expected); |
510ca126 AW |
1115 | VM_ASSERT (FRAME_LOCALS_COUNT () <= expected, |
1116 | vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp))); | |
1117 | NEXT (1); | |
1118 | } | |
1119 | ||
af95414f | 1120 | /* alloc-frame nlocals:24 |
510ca126 AW |
1121 | * |
1122 | * Ensure that there is space on the stack for NLOCALS local variables, | |
1123 | * setting them all to SCM_UNDEFINED, except those nargs values that | |
7396d216 | 1124 | * were passed as arguments and procedure. |
510ca126 | 1125 | */ |
486013d6 | 1126 | VM_DEFINE_OP (22, alloc_frame, "alloc-frame", OP1 (U8_U24)) |
510ca126 AW |
1127 | { |
1128 | scm_t_uint32 nlocals, nargs; | |
20b1b913 | 1129 | UNPACK_24 (op, nlocals); |
510ca126 AW |
1130 | |
1131 | nargs = FRAME_LOCALS_COUNT (); | |
1132 | ALLOC_FRAME (nlocals); | |
1133 | while (nlocals-- > nargs) | |
1134 | LOCAL_SET (nlocals, SCM_UNDEFINED); | |
1135 | ||
1136 | NEXT (1); | |
1137 | } | |
1138 | ||
af95414f AW |
1139 | /* reset-frame nlocals:24 |
1140 | * | |
1141 | * Like alloc-frame, but doesn't check that the stack is big enough. | |
1142 | * Used to reset the frame size to something less than the size that | |
1143 | * was previously set via alloc-frame. | |
1144 | */ | |
486013d6 | 1145 | VM_DEFINE_OP (23, reset_frame, "reset-frame", OP1 (U8_U24)) |
af95414f AW |
1146 | { |
1147 | scm_t_uint32 nlocals; | |
20b1b913 | 1148 | UNPACK_24 (op, nlocals); |
af95414f AW |
1149 | RESET_FRAME (nlocals); |
1150 | NEXT (1); | |
1151 | } | |
1152 | ||
510ca126 AW |
1153 | /* assert-nargs-ee/locals expected:12 nlocals:12 |
1154 | * | |
1155 | * Equivalent to a sequence of assert-nargs-ee and reserve-locals. The | |
1156 | * number of locals reserved is EXPECTED + NLOCALS. | |
1157 | */ | |
486013d6 | 1158 | VM_DEFINE_OP (24, assert_nargs_ee_locals, "assert-nargs-ee/locals", OP1 (U8_U12_U12)) |
510ca126 AW |
1159 | { |
1160 | scm_t_uint16 expected, nlocals; | |
20b1b913 | 1161 | UNPACK_12_12 (op, expected, nlocals); |
510ca126 AW |
1162 | VM_ASSERT (FRAME_LOCALS_COUNT () == expected, |
1163 | vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp))); | |
1164 | ALLOC_FRAME (expected + nlocals); | |
1165 | while (nlocals--) | |
1166 | LOCAL_SET (expected + nlocals, SCM_UNDEFINED); | |
1167 | ||
1168 | NEXT (1); | |
1169 | } | |
1170 | ||
f90c0554 AW |
1171 | /* br-if-npos-gt nreq:24 _:8 npos:24 _:8 offset:24 |
1172 | * | |
1173 | * Find the first positional argument after NREQ. If it is greater | |
1174 | * than NPOS, jump to OFFSET. | |
1175 | * | |
1176 | * This instruction is only emitted for functions with multiple | |
1177 | * clauses, and an earlier clause has keywords and no rest arguments. | |
1178 | * See "Case-lambda" in the manual, for more on how case-lambda | |
1179 | * chooses the clause to apply. | |
1180 | */ | |
1181 | VM_DEFINE_OP (25, br_if_npos_gt, "br-if-npos-gt", OP3 (U8_U24, X8_U24, X8_L24)) | |
1182 | { | |
1183 | scm_t_uint32 nreq, npos; | |
1184 | ||
20b1b913 AW |
1185 | UNPACK_24 (op, nreq); |
1186 | UNPACK_24 (ip[1], npos); | |
f90c0554 AW |
1187 | |
1188 | /* We can only have too many positionals if there are more | |
1189 | arguments than NPOS. */ | |
1190 | if (FRAME_LOCALS_COUNT() > npos) | |
1191 | { | |
1192 | scm_t_uint32 n; | |
1193 | for (n = nreq; n < npos; n++) | |
1194 | if (scm_is_keyword (LOCAL_REF (n))) | |
1195 | break; | |
1196 | if (n == npos && !scm_is_keyword (LOCAL_REF (n))) | |
1197 | { | |
1198 | scm_t_int32 offset = ip[2]; | |
1199 | offset >>= 8; /* Sign-extending shift. */ | |
1200 | NEXT (offset); | |
1201 | } | |
1202 | } | |
1203 | NEXT (3); | |
1204 | } | |
1205 | ||
510ca126 AW |
1206 | /* bind-kwargs nreq:24 allow-other-keys:1 has-rest:1 _:6 nreq-and-opt:24 |
1207 | * _:8 ntotal:24 kw-offset:32 | |
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 | */ | |
f90c0554 | 1218 | VM_DEFINE_OP (26, bind_kwargs, "bind-kwargs", OP4 (U8_U24, U8_U24, X8_U24, N32)) |
510ca126 AW |
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 | ||
20b1b913 | 1226 | UNPACK_24 (op, nreq); |
510ca126 AW |
1227 | allow_other_keys = ip[1] & 0x1; |
1228 | has_rest = ip[1] & 0x2; | |
20b1b913 AW |
1229 | UNPACK_24 (ip[1], nreq_and_opt); |
1230 | UNPACK_24 (ip[2], ntotal); | |
510ca126 AW |
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, | |
28d5d253 MW |
1277 | vm_error_kwargs_unrecognized_keyword (SCM_FRAME_PROGRAM (fp), |
1278 | LOCAL_REF (ntotal + n))); | |
510ca126 AW |
1279 | n++; |
1280 | } | |
1281 | else | |
28d5d253 MW |
1282 | VM_ASSERT (has_rest, vm_error_kwargs_invalid_keyword (SCM_FRAME_PROGRAM (fp), |
1283 | LOCAL_REF (ntotal + n))); | |
510ca126 AW |
1284 | |
1285 | if (has_rest) | |
1286 | { | |
1287 | SCM rest = SCM_EOL; | |
1288 | n = nkw; | |
1289 | while (n--) | |
1290 | rest = scm_cons (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 | */ | |
f90c0554 | 1304 | VM_DEFINE_OP (27, bind_rest, "bind-rest", OP1 (U8_U24) | OP_DST) |
510ca126 AW |
1305 | { |
1306 | scm_t_uint32 dst, nargs; | |
1307 | SCM rest = SCM_EOL; | |
1308 | ||
20b1b913 | 1309 | UNPACK_24 (op, dst); |
510ca126 AW |
1310 | nargs = FRAME_LOCALS_COUNT (); |
1311 | ||
234155e3 | 1312 | if (nargs <= dst) |
510ca126 | 1313 | { |
234155e3 AW |
1314 | ALLOC_FRAME (dst + 1); |
1315 | while (nargs < dst) | |
1316 | LOCAL_SET (nargs++, SCM_UNDEFINED); | |
510ca126 | 1317 | } |
234155e3 AW |
1318 | else |
1319 | { | |
1320 | while (nargs-- > dst) | |
1321 | { | |
1322 | rest = scm_cons (LOCAL_REF (nargs), rest); | |
1323 | LOCAL_SET (nargs, SCM_UNDEFINED); | |
1324 | } | |
510ca126 | 1325 | |
234155e3 AW |
1326 | RESET_FRAME (dst + 1); |
1327 | } | |
510ca126 | 1328 | |
234155e3 | 1329 | LOCAL_SET (dst, rest); |
510ca126 AW |
1330 | |
1331 | NEXT (1); | |
1332 | } | |
1333 | ||
510ca126 AW |
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 | */ | |
f90c0554 | 1346 | VM_DEFINE_OP (28, br, "br", OP1 (U8_L24)) |
510ca126 AW |
1347 | { |
1348 | scm_t_int32 offset = op; | |
1349 | offset >>= 8; /* Sign-extending shift. */ | |
1350 | NEXT (offset); | |
1351 | } | |
1352 | ||
1353 | /* br-if-true test:24 invert:1 _:7 offset:24 | |
1354 | * | |
1355 | * If the value in TEST is true for the purposes of Scheme, add | |
1356 | * OFFSET, a signed 24-bit number, to the current instruction pointer. | |
1357 | */ | |
f90c0554 | 1358 | VM_DEFINE_OP (29, br_if_true, "br-if-true", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1359 | { |
1360 | BR_UNARY (x, scm_is_true (x)); | |
1361 | } | |
1362 | ||
1363 | /* br-if-null test:24 invert:1 _:7 offset:24 | |
1364 | * | |
1365 | * If the value in TEST is the end-of-list or Lisp nil, add OFFSET, a | |
1366 | * signed 24-bit number, to the current instruction pointer. | |
1367 | */ | |
f90c0554 | 1368 | VM_DEFINE_OP (30, br_if_null, "br-if-null", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1369 | { |
1370 | BR_UNARY (x, scm_is_null (x)); | |
1371 | } | |
1372 | ||
1373 | /* br-if-nil test:24 invert:1 _:7 offset:24 | |
1374 | * | |
1375 | * If the value in TEST is false to Lisp, add OFFSET, a signed 24-bit | |
1376 | * number, to the current instruction pointer. | |
1377 | */ | |
f90c0554 | 1378 | VM_DEFINE_OP (31, br_if_nil, "br-if-nil", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1379 | { |
1380 | BR_UNARY (x, scm_is_lisp_false (x)); | |
1381 | } | |
1382 | ||
1383 | /* br-if-pair test:24 invert:1 _:7 offset:24 | |
1384 | * | |
1385 | * If the value in TEST is a pair, add OFFSET, a signed 24-bit number, | |
1386 | * to the current instruction pointer. | |
1387 | */ | |
f90c0554 | 1388 | VM_DEFINE_OP (32, br_if_pair, "br-if-pair", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1389 | { |
1390 | BR_UNARY (x, scm_is_pair (x)); | |
1391 | } | |
1392 | ||
1393 | /* br-if-struct test:24 invert:1 _:7 offset:24 | |
1394 | * | |
1395 | * If the value in TEST is a struct, add OFFSET, a signed 24-bit | |
1396 | * number, to the current instruction pointer. | |
1397 | */ | |
f90c0554 | 1398 | VM_DEFINE_OP (33, br_if_struct, "br-if-struct", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1399 | { |
1400 | BR_UNARY (x, SCM_STRUCTP (x)); | |
1401 | } | |
1402 | ||
1403 | /* br-if-char test:24 invert:1 _:7 offset:24 | |
1404 | * | |
1405 | * If the value in TEST is a char, add OFFSET, a signed 24-bit number, | |
1406 | * to the current instruction pointer. | |
1407 | */ | |
f90c0554 | 1408 | VM_DEFINE_OP (34, br_if_char, "br-if-char", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1409 | { |
1410 | BR_UNARY (x, SCM_CHARP (x)); | |
1411 | } | |
1412 | ||
1413 | /* br-if-tc7 test:24 invert:1 tc7:7 offset:24 | |
1414 | * | |
1415 | * If the value in TEST has the TC7 given in the second word, add | |
1416 | * OFFSET, a signed 24-bit number, to the current instruction pointer. | |
1417 | */ | |
f90c0554 | 1418 | VM_DEFINE_OP (35, br_if_tc7, "br-if-tc7", OP2 (U8_U24, B1_U7_L24)) |
510ca126 AW |
1419 | { |
1420 | BR_UNARY (x, SCM_HAS_TYP7 (x, (ip[1] >> 1) & 0x7f)); | |
1421 | } | |
1422 | ||
1423 | /* br-if-eq a:12 b:12 invert:1 _:7 offset:24 | |
1424 | * | |
1425 | * If the value in A is eq? to the value in B, add OFFSET, a signed | |
1426 | * 24-bit number, to the current instruction pointer. | |
1427 | */ | |
f90c0554 | 1428 | VM_DEFINE_OP (36, br_if_eq, "br-if-eq", OP2 (U8_U12_U12, B1_X7_L24)) |
510ca126 AW |
1429 | { |
1430 | BR_BINARY (x, y, scm_is_eq (x, y)); | |
1431 | } | |
1432 | ||
1433 | /* br-if-eqv a:12 b:12 invert:1 _:7 offset:24 | |
1434 | * | |
1435 | * If the value in A is eqv? to the value in B, add OFFSET, a signed | |
1436 | * 24-bit number, to the current instruction pointer. | |
1437 | */ | |
f90c0554 | 1438 | VM_DEFINE_OP (37, br_if_eqv, "br-if-eqv", OP2 (U8_U12_U12, B1_X7_L24)) |
510ca126 AW |
1439 | { |
1440 | BR_BINARY (x, y, | |
1441 | scm_is_eq (x, y) | |
1442 | || (SCM_NIMP (x) && SCM_NIMP (y) | |
1443 | && scm_is_true (scm_eqv_p (x, y)))); | |
1444 | } | |
1445 | ||
af95414f | 1446 | // FIXME: remove, have compiler inline eqv test instead |
510ca126 AW |
1447 | /* br-if-equal a:12 b:12 invert:1 _:7 offset:24 |
1448 | * | |
1449 | * If the value in A is equal? to the value in B, add OFFSET, a signed | |
1450 | * 24-bit number, to the current instruction pointer. | |
1451 | */ | |
1452 | // FIXME: should sync_ip before calling out? | |
f90c0554 | 1453 | VM_DEFINE_OP (38, br_if_equal, "br-if-equal", OP2 (U8_U12_U12, B1_X7_L24)) |
510ca126 AW |
1454 | { |
1455 | BR_BINARY (x, y, | |
1456 | scm_is_eq (x, y) | |
1457 | || (SCM_NIMP (x) && SCM_NIMP (y) | |
1458 | && scm_is_true (scm_equal_p (x, y)))); | |
1459 | } | |
1460 | ||
af95414f | 1461 | /* br-if-= a:12 b:12 invert:1 _:7 offset:24 |
510ca126 AW |
1462 | * |
1463 | * If the value in A is = to the value in B, add OFFSET, a signed | |
1464 | * 24-bit number, to the current instruction pointer. | |
1465 | */ | |
f90c0554 | 1466 | VM_DEFINE_OP (39, br_if_ee, "br-if-=", OP2 (U8_U12_U12, B1_X7_L24)) |
510ca126 AW |
1467 | { |
1468 | BR_ARITHMETIC (==, scm_num_eq_p); | |
1469 | } | |
1470 | ||
1471 | /* br-if-< a:12 b:12 _:8 offset:24 | |
1472 | * | |
1473 | * If the value in A is < to the value in B, add OFFSET, a signed | |
1474 | * 24-bit number, to the current instruction pointer. | |
1475 | */ | |
f90c0554 | 1476 | VM_DEFINE_OP (40, br_if_lt, "br-if-<", OP2 (U8_U12_U12, B1_X7_L24)) |
510ca126 AW |
1477 | { |
1478 | BR_ARITHMETIC (<, scm_less_p); | |
1479 | } | |
1480 | ||
1481 | /* br-if-<= a:12 b:12 _:8 offset:24 | |
1482 | * | |
1483 | * If the value in A is <= to the value in B, add OFFSET, a signed | |
1484 | * 24-bit number, to the current instruction pointer. | |
1485 | */ | |
f90c0554 | 1486 | VM_DEFINE_OP (41, br_if_le, "br-if-<=", OP2 (U8_U12_U12, B1_X7_L24)) |
510ca126 AW |
1487 | { |
1488 | BR_ARITHMETIC (<=, scm_leq_p); | |
1489 | } | |
1490 | ||
510ca126 AW |
1491 | |
1492 | \f | |
1493 | ||
1494 | /* | |
1495 | * Lexical binding instructions | |
1496 | */ | |
1497 | ||
1498 | /* mov dst:12 src:12 | |
1499 | * | |
1500 | * Copy a value from one local slot to another. | |
1501 | */ | |
f90c0554 | 1502 | VM_DEFINE_OP (42, mov, "mov", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
1503 | { |
1504 | scm_t_uint16 dst; | |
1505 | scm_t_uint16 src; | |
1506 | ||
20b1b913 | 1507 | UNPACK_12_12 (op, dst, src); |
510ca126 AW |
1508 | LOCAL_SET (dst, LOCAL_REF (src)); |
1509 | ||
1510 | NEXT (1); | |
1511 | } | |
1512 | ||
1513 | /* long-mov dst:24 _:8 src:24 | |
1514 | * | |
1515 | * Copy a value from one local slot to another. | |
1516 | */ | |
f90c0554 | 1517 | VM_DEFINE_OP (43, long_mov, "long-mov", OP2 (U8_U24, X8_U24) | OP_DST) |
510ca126 AW |
1518 | { |
1519 | scm_t_uint32 dst; | |
1520 | scm_t_uint32 src; | |
1521 | ||
20b1b913 AW |
1522 | UNPACK_24 (op, dst); |
1523 | UNPACK_24 (ip[1], src); | |
510ca126 AW |
1524 | LOCAL_SET (dst, LOCAL_REF (src)); |
1525 | ||
1526 | NEXT (2); | |
1527 | } | |
1528 | ||
1529 | /* box dst:12 src:12 | |
1530 | * | |
1531 | * Create a new variable holding SRC, and place it in DST. | |
1532 | */ | |
f90c0554 | 1533 | VM_DEFINE_OP (44, box, "box", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
1534 | { |
1535 | scm_t_uint16 dst, src; | |
20b1b913 | 1536 | UNPACK_12_12 (op, dst, src); |
510ca126 AW |
1537 | LOCAL_SET (dst, scm_cell (scm_tc7_variable, SCM_UNPACK (LOCAL_REF (src)))); |
1538 | NEXT (1); | |
1539 | } | |
1540 | ||
510ca126 AW |
1541 | /* box-ref dst:12 src:12 |
1542 | * | |
1543 | * Unpack the variable at SRC into DST, asserting that the variable is | |
1544 | * actually bound. | |
1545 | */ | |
f90c0554 | 1546 | VM_DEFINE_OP (45, box_ref, "box-ref", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
1547 | { |
1548 | scm_t_uint16 dst, src; | |
1549 | SCM var; | |
20b1b913 | 1550 | UNPACK_12_12 (op, dst, src); |
510ca126 | 1551 | var = LOCAL_REF (src); |
4f406fea AW |
1552 | VM_ASSERT (SCM_VARIABLEP (var), |
1553 | vm_error_not_a_variable ("variable-ref", var)); | |
af95414f AW |
1554 | VM_ASSERT (VARIABLE_BOUNDP (var), |
1555 | vm_error_unbound (SCM_FRAME_PROGRAM (fp), var)); | |
510ca126 AW |
1556 | LOCAL_SET (dst, VARIABLE_REF (var)); |
1557 | NEXT (1); | |
1558 | } | |
1559 | ||
1560 | /* box-set! dst:12 src:12 | |
1561 | * | |
1562 | * Set the contents of the variable at DST to SET. | |
1563 | */ | |
f90c0554 | 1564 | VM_DEFINE_OP (46, box_set, "box-set!", OP1 (U8_U12_U12)) |
510ca126 AW |
1565 | { |
1566 | scm_t_uint16 dst, src; | |
1567 | SCM var; | |
20b1b913 | 1568 | UNPACK_12_12 (op, dst, src); |
510ca126 | 1569 | var = LOCAL_REF (dst); |
4f406fea AW |
1570 | VM_ASSERT (SCM_VARIABLEP (var), |
1571 | vm_error_not_a_variable ("variable-set!", var)); | |
510ca126 AW |
1572 | VARIABLE_SET (var, LOCAL_REF (src)); |
1573 | NEXT (1); | |
1574 | } | |
1575 | ||
7396d216 | 1576 | /* make-closure dst:24 offset:32 _:8 nfree:24 |
510ca126 AW |
1577 | * |
1578 | * Make a new closure, and write it to DST. The code for the closure | |
1579 | * will be found at OFFSET words from the current IP. OFFSET is a | |
7396d216 AW |
1580 | * signed 32-bit integer. Space for NFREE free variables will be |
1581 | * allocated. | |
510ca126 | 1582 | */ |
f90c0554 | 1583 | VM_DEFINE_OP (47, make_closure, "make-closure", OP3 (U8_U24, L32, X8_U24) | OP_DST) |
510ca126 AW |
1584 | { |
1585 | scm_t_uint32 dst, nfree, n; | |
1586 | scm_t_int32 offset; | |
1587 | SCM closure; | |
1588 | ||
20b1b913 | 1589 | UNPACK_24 (op, dst); |
510ca126 | 1590 | offset = ip[1]; |
20b1b913 | 1591 | UNPACK_24 (ip[2], nfree); |
510ca126 AW |
1592 | |
1593 | // FIXME: Assert range of nfree? | |
e0755cd1 | 1594 | closure = scm_words (scm_tc7_program | (nfree << 16), nfree + 2); |
510ca126 | 1595 | SCM_SET_CELL_WORD_1 (closure, ip + offset); |
7396d216 | 1596 | // FIXME: Elide these initializations? |
510ca126 | 1597 | for (n = 0; n < nfree; n++) |
d798a895 | 1598 | SCM_PROGRAM_FREE_VARIABLE_SET (closure, n, SCM_BOOL_F); |
510ca126 | 1599 | LOCAL_SET (dst, closure); |
7396d216 | 1600 | NEXT (3); |
510ca126 AW |
1601 | } |
1602 | ||
7396d216 | 1603 | /* free-ref dst:12 src:12 _:8 idx:24 |
510ca126 | 1604 | * |
7396d216 | 1605 | * Load free variable IDX from the closure SRC into local slot DST. |
510ca126 | 1606 | */ |
f90c0554 | 1607 | VM_DEFINE_OP (48, free_ref, "free-ref", OP2 (U8_U12_U12, X8_U24) | OP_DST) |
510ca126 | 1608 | { |
7396d216 AW |
1609 | scm_t_uint16 dst, src; |
1610 | scm_t_uint32 idx; | |
20b1b913 AW |
1611 | UNPACK_12_12 (op, dst, src); |
1612 | UNPACK_24 (ip[1], idx); | |
7396d216 | 1613 | /* CHECK_FREE_VARIABLE (src); */ |
d798a895 | 1614 | LOCAL_SET (dst, SCM_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (src), idx)); |
7396d216 AW |
1615 | NEXT (2); |
1616 | } | |
510ca126 | 1617 | |
7396d216 AW |
1618 | /* free-set! dst:12 src:12 _8 idx:24 |
1619 | * | |
1620 | * Set free variable IDX from the closure DST to SRC. | |
1621 | */ | |
f90c0554 | 1622 | VM_DEFINE_OP (49, free_set, "free-set!", OP2 (U8_U12_U12, X8_U24)) |
7396d216 AW |
1623 | { |
1624 | scm_t_uint16 dst, src; | |
1625 | scm_t_uint32 idx; | |
20b1b913 AW |
1626 | UNPACK_12_12 (op, dst, src); |
1627 | UNPACK_24 (ip[1], idx); | |
7396d216 | 1628 | /* CHECK_FREE_VARIABLE (src); */ |
d798a895 | 1629 | SCM_PROGRAM_FREE_VARIABLE_SET (LOCAL_REF (dst), idx, LOCAL_REF (src)); |
7396d216 | 1630 | NEXT (2); |
510ca126 AW |
1631 | } |
1632 | ||
1633 | ||
1634 | \f | |
1635 | ||
1636 | /* | |
1637 | * Immediates and statically allocated non-immediates | |
1638 | */ | |
1639 | ||
1640 | /* make-short-immediate dst:8 low-bits:16 | |
1641 | * | |
1642 | * Make an immediate whose low bits are LOW-BITS, and whose top bits are | |
1643 | * 0. | |
1644 | */ | |
f90c0554 | 1645 | VM_DEFINE_OP (50, make_short_immediate, "make-short-immediate", OP1 (U8_U8_I16) | OP_DST) |
510ca126 AW |
1646 | { |
1647 | scm_t_uint8 dst; | |
1648 | scm_t_bits val; | |
1649 | ||
20b1b913 | 1650 | UNPACK_8_16 (op, dst, val); |
510ca126 AW |
1651 | LOCAL_SET (dst, SCM_PACK (val)); |
1652 | NEXT (1); | |
1653 | } | |
1654 | ||
1655 | /* make-long-immediate dst:24 low-bits:32 | |
1656 | * | |
1657 | * Make an immediate whose low bits are LOW-BITS, and whose top bits are | |
1658 | * 0. | |
1659 | */ | |
f90c0554 | 1660 | VM_DEFINE_OP (51, make_long_immediate, "make-long-immediate", OP2 (U8_U24, I32)) |
510ca126 | 1661 | { |
da60ba80 | 1662 | scm_t_uint32 dst; |
510ca126 AW |
1663 | scm_t_bits val; |
1664 | ||
20b1b913 | 1665 | UNPACK_24 (op, dst); |
510ca126 AW |
1666 | val = ip[1]; |
1667 | LOCAL_SET (dst, SCM_PACK (val)); | |
1668 | NEXT (2); | |
1669 | } | |
1670 | ||
1671 | /* make-long-long-immediate dst:24 high-bits:32 low-bits:32 | |
1672 | * | |
1673 | * Make an immediate with HIGH-BITS and LOW-BITS. | |
1674 | */ | |
f90c0554 | 1675 | VM_DEFINE_OP (52, make_long_long_immediate, "make-long-long-immediate", OP3 (U8_U24, A32, B32) | OP_DST) |
510ca126 | 1676 | { |
da60ba80 | 1677 | scm_t_uint32 dst; |
510ca126 AW |
1678 | scm_t_bits val; |
1679 | ||
20b1b913 | 1680 | UNPACK_24 (op, dst); |
510ca126 AW |
1681 | #if SIZEOF_SCM_T_BITS > 4 |
1682 | val = ip[1]; | |
1683 | val <<= 32; | |
1684 | val |= ip[2]; | |
1685 | #else | |
1686 | ASSERT (ip[1] == 0); | |
1687 | val = ip[2]; | |
1688 | #endif | |
1689 | LOCAL_SET (dst, SCM_PACK (val)); | |
1690 | NEXT (3); | |
1691 | } | |
1692 | ||
1693 | /* make-non-immediate dst:24 offset:32 | |
1694 | * | |
1695 | * Load a pointer to statically allocated memory into DST. The | |
1696 | * object's memory is will be found OFFSET 32-bit words away from the | |
1697 | * current instruction pointer. OFFSET is a signed value. The | |
1698 | * intention here is that the compiler would produce an object file | |
1699 | * containing the words of a non-immediate object, and this | |
1700 | * instruction creates a pointer to that memory, effectively | |
1701 | * resurrecting that object. | |
1702 | * | |
1703 | * Whether the object is mutable or immutable depends on where it was | |
1704 | * allocated by the compiler, and loaded by the loader. | |
1705 | */ | |
f90c0554 | 1706 | VM_DEFINE_OP (53, make_non_immediate, "make-non-immediate", OP2 (U8_U24, N32) | OP_DST) |
510ca126 AW |
1707 | { |
1708 | scm_t_uint32 dst; | |
1709 | scm_t_int32 offset; | |
1710 | scm_t_uint32* loc; | |
1711 | scm_t_bits unpacked; | |
1712 | ||
20b1b913 | 1713 | UNPACK_24 (op, dst); |
510ca126 AW |
1714 | offset = ip[1]; |
1715 | loc = ip + offset; | |
1716 | unpacked = (scm_t_bits) loc; | |
1717 | ||
1718 | VM_ASSERT (!(unpacked & 0x7), abort()); | |
1719 | ||
1720 | LOCAL_SET (dst, SCM_PACK (unpacked)); | |
1721 | ||
1722 | NEXT (2); | |
1723 | } | |
1724 | ||
1725 | /* static-ref dst:24 offset:32 | |
1726 | * | |
1727 | * Load a SCM value into DST. The SCM value will be fetched from | |
1728 | * memory, OFFSET 32-bit words away from the current instruction | |
1729 | * pointer. OFFSET is a signed value. | |
1730 | * | |
1731 | * The intention is for this instruction to be used to load constants | |
1732 | * that the compiler is unable to statically allocate, like symbols. | |
1733 | * These values would be initialized when the object file loads. | |
1734 | */ | |
f90c0554 | 1735 | VM_DEFINE_OP (54, static_ref, "static-ref", OP2 (U8_U24, S32)) |
510ca126 AW |
1736 | { |
1737 | scm_t_uint32 dst; | |
1738 | scm_t_int32 offset; | |
1739 | scm_t_uint32* loc; | |
1740 | scm_t_uintptr loc_bits; | |
1741 | ||
20b1b913 | 1742 | UNPACK_24 (op, dst); |
510ca126 AW |
1743 | offset = ip[1]; |
1744 | loc = ip + offset; | |
1745 | loc_bits = (scm_t_uintptr) loc; | |
1746 | VM_ASSERT (ALIGNED_P (loc, SCM), abort()); | |
1747 | ||
1748 | LOCAL_SET (dst, *((SCM *) loc_bits)); | |
1749 | ||
1750 | NEXT (2); | |
1751 | } | |
1752 | ||
1753 | /* static-set! src:24 offset:32 | |
1754 | * | |
1755 | * Store a SCM value into memory, OFFSET 32-bit words away from the | |
1756 | * current instruction pointer. OFFSET is a signed value. | |
1757 | */ | |
f90c0554 | 1758 | VM_DEFINE_OP (55, static_set, "static-set!", OP2 (U8_U24, LO32)) |
510ca126 AW |
1759 | { |
1760 | scm_t_uint32 src; | |
1761 | scm_t_int32 offset; | |
1762 | scm_t_uint32* loc; | |
1763 | ||
20b1b913 | 1764 | UNPACK_24 (op, src); |
510ca126 AW |
1765 | offset = ip[1]; |
1766 | loc = ip + offset; | |
1767 | VM_ASSERT (ALIGNED_P (loc, SCM), abort()); | |
1768 | ||
1769 | *((SCM *) loc) = LOCAL_REF (src); | |
1770 | ||
1771 | NEXT (2); | |
1772 | } | |
1773 | ||
2ab2a10d | 1774 | /* static-patch! _:24 dst-offset:32 src-offset:32 |
510ca126 | 1775 | * |
2ab2a10d AW |
1776 | * Patch a pointer at DST-OFFSET to point to SRC-OFFSET. Both offsets |
1777 | * are signed 32-bit values, indicating a memory address as a number | |
1778 | * of 32-bit words away from the current instruction pointer. | |
510ca126 | 1779 | */ |
f90c0554 | 1780 | VM_DEFINE_OP (56, static_patch, "static-patch!", OP3 (U8_X24, LO32, L32)) |
510ca126 | 1781 | { |
2ab2a10d AW |
1782 | scm_t_int32 dst_offset, src_offset; |
1783 | void *src; | |
1784 | void** dst_loc; | |
510ca126 | 1785 | |
2ab2a10d AW |
1786 | dst_offset = ip[1]; |
1787 | src_offset = ip[2]; | |
510ca126 | 1788 | |
2ab2a10d AW |
1789 | dst_loc = (void **) (ip + dst_offset); |
1790 | src = ip + src_offset; | |
1791 | VM_ASSERT (ALIGNED_P (dst_loc, void*), abort()); | |
510ca126 | 1792 | |
2ab2a10d AW |
1793 | *dst_loc = src; |
1794 | ||
1795 | NEXT (3); | |
510ca126 AW |
1796 | } |
1797 | ||
1798 | \f | |
1799 | ||
1800 | /* | |
1801 | * Mutable top-level bindings | |
1802 | */ | |
1803 | ||
1804 | /* There are three slightly different ways to resolve toplevel | |
1805 | variables. | |
1806 | ||
1807 | 1. A toplevel reference outside of a function. These need to be | |
1808 | looked up when the expression is evaluated -- no later, and no | |
1809 | before. They are looked up relative to the module that is | |
1810 | current when the expression is evaluated. For example: | |
1811 | ||
1812 | (if (foo) a b) | |
1813 | ||
1814 | The "resolve" instruction resolves the variable (box), and then | |
1815 | access is via box-ref or box-set!. | |
1816 | ||
1817 | 2. A toplevel reference inside a function. These are looked up | |
1818 | relative to the module that was current when the function was | |
1819 | defined. Unlike code at the toplevel, which is usually run only | |
1820 | once, these bindings benefit from memoized lookup, in which the | |
1821 | variable resulting from the lookup is cached in the function. | |
1822 | ||
1823 | (lambda () (if (foo) a b)) | |
1824 | ||
af95414f AW |
1825 | The toplevel-box instruction is equivalent to "resolve", but |
1826 | caches the resulting variable in statically allocated memory. | |
510ca126 AW |
1827 | |
1828 | 3. A reference to an identifier with respect to a particular | |
1829 | module. This can happen for primitive references, and | |
af95414f AW |
1830 | references residualized by macro expansions. These can always |
1831 | be cached. Use module-box for these. | |
510ca126 AW |
1832 | */ |
1833 | ||
1834 | /* current-module dst:24 | |
1835 | * | |
1836 | * Store the current module in DST. | |
1837 | */ | |
f90c0554 | 1838 | VM_DEFINE_OP (57, current_module, "current-module", OP1 (U8_U24) | OP_DST) |
510ca126 AW |
1839 | { |
1840 | scm_t_uint32 dst; | |
1841 | ||
20b1b913 | 1842 | UNPACK_24 (op, dst); |
510ca126 AW |
1843 | |
1844 | SYNC_IP (); | |
1845 | LOCAL_SET (dst, scm_current_module ()); | |
1846 | ||
1847 | NEXT (1); | |
1848 | } | |
1849 | ||
af95414f | 1850 | /* resolve dst:24 bound?:1 _:7 sym:24 |
510ca126 | 1851 | * |
af95414f AW |
1852 | * Resolve SYM in the current module, and place the resulting variable |
1853 | * in DST. | |
510ca126 | 1854 | */ |
f90c0554 | 1855 | VM_DEFINE_OP (58, resolve, "resolve", OP2 (U8_U24, B1_X7_U24) | OP_DST) |
510ca126 | 1856 | { |
af95414f AW |
1857 | scm_t_uint32 dst; |
1858 | scm_t_uint32 sym; | |
1859 | SCM var; | |
510ca126 | 1860 | |
20b1b913 AW |
1861 | UNPACK_24 (op, dst); |
1862 | UNPACK_24 (ip[1], sym); | |
510ca126 AW |
1863 | |
1864 | SYNC_IP (); | |
af95414f AW |
1865 | var = scm_lookup (LOCAL_REF (sym)); |
1866 | if (ip[1] & 0x1) | |
1867 | VM_ASSERT (VARIABLE_BOUNDP (var), | |
b636cdb0 | 1868 | vm_error_unbound (fp[0], LOCAL_REF (sym))); |
af95414f | 1869 | LOCAL_SET (dst, var); |
510ca126 | 1870 | |
af95414f | 1871 | NEXT (2); |
510ca126 AW |
1872 | } |
1873 | ||
6165d812 | 1874 | /* define! sym:12 val:12 |
510ca126 AW |
1875 | * |
1876 | * Look up a binding for SYM in the current module, creating it if | |
1877 | * necessary. Set its value to VAL. | |
1878 | */ | |
f90c0554 | 1879 | VM_DEFINE_OP (59, define, "define!", OP1 (U8_U12_U12)) |
510ca126 AW |
1880 | { |
1881 | scm_t_uint16 sym, val; | |
20b1b913 | 1882 | UNPACK_12_12 (op, sym, val); |
510ca126 AW |
1883 | SYNC_IP (); |
1884 | scm_define (LOCAL_REF (sym), LOCAL_REF (val)); | |
1885 | NEXT (1); | |
1886 | } | |
1887 | ||
af95414f | 1888 | /* toplevel-box dst:24 var-offset:32 mod-offset:32 sym-offset:32 bound?:1 _:31 |
510ca126 AW |
1889 | * |
1890 | * Load a SCM value. The SCM value will be fetched from memory, | |
1891 | * VAR-OFFSET 32-bit words away from the current instruction pointer. | |
af95414f | 1892 | * VAR-OFFSET is a signed value. Up to here, toplevel-box is like |
510ca126 AW |
1893 | * static-ref. |
1894 | * | |
af95414f AW |
1895 | * Then, if the loaded value is a variable, it is placed in DST, and control |
1896 | * flow continues. | |
510ca126 AW |
1897 | * |
1898 | * Otherwise, we have to resolve the variable. In that case we load | |
1899 | * the module from MOD-OFFSET, just as we loaded the variable. | |
1900 | * Usually the module gets set when the closure is created. The name | |
1901 | * is an offset to a symbol. | |
1902 | * | |
af95414f AW |
1903 | * We use the module and the symbol to resolve the variable, placing it in |
1904 | * DST, and caching the resolved variable so that we will hit the cache next | |
1905 | * time. | |
510ca126 | 1906 | */ |
f90c0554 | 1907 | VM_DEFINE_OP (60, toplevel_box, "toplevel-box", OP5 (U8_U24, S32, S32, N32, B1_X31) | OP_DST) |
510ca126 AW |
1908 | { |
1909 | scm_t_uint32 dst; | |
1910 | scm_t_int32 var_offset; | |
1911 | scm_t_uint32* var_loc_u32; | |
1912 | SCM *var_loc; | |
1913 | SCM var; | |
1914 | ||
20b1b913 | 1915 | UNPACK_24 (op, dst); |
510ca126 AW |
1916 | var_offset = ip[1]; |
1917 | var_loc_u32 = ip + var_offset; | |
1918 | VM_ASSERT (ALIGNED_P (var_loc_u32, SCM), abort()); | |
1919 | var_loc = (SCM *) var_loc_u32; | |
1920 | var = *var_loc; | |
1921 | ||
1922 | if (SCM_UNLIKELY (!SCM_VARIABLEP (var))) | |
1923 | { | |
1924 | SCM mod, sym; | |
1925 | scm_t_int32 mod_offset = ip[2]; /* signed */ | |
1926 | scm_t_int32 sym_offset = ip[3]; /* signed */ | |
1927 | scm_t_uint32 *mod_loc = ip + mod_offset; | |
1928 | scm_t_uint32 *sym_loc = ip + sym_offset; | |
1929 | ||
1930 | SYNC_IP (); | |
1931 | ||
1932 | VM_ASSERT (ALIGNED_P (mod_loc, SCM), abort()); | |
1933 | VM_ASSERT (ALIGNED_P (sym_loc, SCM), abort()); | |
1934 | ||
1935 | mod = *((SCM *) mod_loc); | |
1936 | sym = *((SCM *) sym_loc); | |
1937 | ||
e23f9e44 AW |
1938 | /* If the toplevel scope was captured before modules were |
1939 | booted, use the root module. */ | |
1940 | if (scm_is_false (mod)) | |
1941 | mod = scm_the_root_module (); | |
1942 | ||
510ca126 | 1943 | var = scm_module_lookup (mod, sym); |
af95414f | 1944 | if (ip[4] & 0x1) |
b636cdb0 | 1945 | VM_ASSERT (VARIABLE_BOUNDP (var), vm_error_unbound (fp[0], sym)); |
510ca126 AW |
1946 | |
1947 | *var_loc = var; | |
1948 | } | |
1949 | ||
af95414f AW |
1950 | LOCAL_SET (dst, var); |
1951 | NEXT (5); | |
510ca126 AW |
1952 | } |
1953 | ||
af95414f | 1954 | /* module-box dst:24 var-offset:32 mod-offset:32 sym-offset:32 bound?:1 _:31 |
510ca126 | 1955 | * |
af95414f | 1956 | * Like toplevel-box, except MOD-OFFSET points at the name of a module |
510ca126 AW |
1957 | * instead of the module itself. |
1958 | */ | |
f90c0554 | 1959 | VM_DEFINE_OP (61, module_box, "module-box", OP5 (U8_U24, S32, N32, N32, B1_X31) | OP_DST) |
510ca126 AW |
1960 | { |
1961 | scm_t_uint32 dst; | |
1962 | scm_t_int32 var_offset; | |
1963 | scm_t_uint32* var_loc_u32; | |
1964 | SCM *var_loc; | |
1965 | SCM var; | |
1966 | ||
20b1b913 | 1967 | UNPACK_24 (op, dst); |
510ca126 AW |
1968 | var_offset = ip[1]; |
1969 | var_loc_u32 = ip + var_offset; | |
1970 | VM_ASSERT (ALIGNED_P (var_loc_u32, SCM), abort()); | |
1971 | var_loc = (SCM *) var_loc_u32; | |
1972 | var = *var_loc; | |
1973 | ||
1974 | if (SCM_UNLIKELY (!SCM_VARIABLEP (var))) | |
1975 | { | |
1976 | SCM modname, sym; | |
1977 | scm_t_int32 modname_offset = ip[2]; /* signed */ | |
1978 | scm_t_int32 sym_offset = ip[3]; /* signed */ | |
1979 | scm_t_uint32 *modname_words = ip + modname_offset; | |
1980 | scm_t_uint32 *sym_loc = ip + sym_offset; | |
1981 | ||
1982 | SYNC_IP (); | |
1983 | ||
1984 | VM_ASSERT (!(((scm_t_uintptr) modname_words) & 0x7), abort()); | |
1985 | VM_ASSERT (ALIGNED_P (sym_loc, SCM), abort()); | |
1986 | ||
1987 | modname = SCM_PACK ((scm_t_bits) modname_words); | |
1988 | sym = *((SCM *) sym_loc); | |
1989 | ||
e23f9e44 AW |
1990 | if (!scm_module_system_booted_p) |
1991 | { | |
1992 | #ifdef VM_ENABLE_PARANOID_ASSERTIONS | |
1993 | ASSERT | |
1994 | (scm_is_true | |
1995 | scm_equal_p (modname, | |
1996 | scm_list_2 (SCM_BOOL_T, | |
1997 | scm_from_utf8_symbol ("guile")))); | |
1998 | #endif | |
1999 | var = scm_lookup (sym); | |
2000 | } | |
2001 | else if (scm_is_true (SCM_CAR (modname))) | |
510ca126 AW |
2002 | var = scm_public_lookup (SCM_CDR (modname), sym); |
2003 | else | |
2004 | var = scm_private_lookup (SCM_CDR (modname), sym); | |
2005 | ||
af95414f | 2006 | if (ip[4] & 0x1) |
b636cdb0 | 2007 | VM_ASSERT (VARIABLE_BOUNDP (var), vm_error_unbound (fp[0], sym)); |
510ca126 AW |
2008 | |
2009 | *var_loc = var; | |
2010 | } | |
2011 | ||
af95414f AW |
2012 | LOCAL_SET (dst, var); |
2013 | NEXT (5); | |
510ca126 AW |
2014 | } |
2015 | ||
2016 | \f | |
2017 | ||
2018 | /* | |
2019 | * The dynamic environment | |
2020 | */ | |
2021 | ||
8d59d55e | 2022 | /* prompt tag:24 escape-only?:1 _:7 proc-slot:24 _:8 handler-offset:24 |
510ca126 AW |
2023 | * |
2024 | * Push a new prompt on the dynamic stack, with a tag from TAG and a | |
2025 | * handler at HANDLER-OFFSET words from the current IP. The handler | |
8d59d55e AW |
2026 | * will expect a multiple-value return as if from a call with the |
2027 | * procedure at PROC-SLOT. | |
510ca126 | 2028 | */ |
f90c0554 | 2029 | VM_DEFINE_OP (62, prompt, "prompt", OP3 (U8_U24, B1_X7_U24, X8_L24)) |
510ca126 | 2030 | { |
8d59d55e | 2031 | scm_t_uint32 tag, proc_slot; |
510ca126 AW |
2032 | scm_t_int32 offset; |
2033 | scm_t_uint8 escape_only_p; | |
2034 | scm_t_dynstack_prompt_flags flags; | |
2035 | ||
20b1b913 | 2036 | UNPACK_24 (op, tag); |
8d59d55e | 2037 | escape_only_p = ip[1] & 0x1; |
20b1b913 | 2038 | UNPACK_24 (ip[1], proc_slot); |
8d59d55e | 2039 | offset = ip[2]; |
510ca126 AW |
2040 | offset >>= 8; /* Sign extension */ |
2041 | ||
2042 | /* Push the prompt onto the dynamic stack. */ | |
2043 | flags = escape_only_p ? SCM_F_DYNSTACK_PROMPT_ESCAPE_ONLY : 0; | |
2044 | scm_dynstack_push_prompt (¤t_thread->dynstack, flags, | |
2045 | LOCAL_REF (tag), | |
8d59d55e | 2046 | fp, |
b636cdb0 | 2047 | LOCAL_ADDRESS (proc_slot), |
9121d9f1 | 2048 | ip + offset, |
8d59d55e AW |
2049 | ®isters); |
2050 | NEXT (3); | |
510ca126 | 2051 | } |
510ca126 AW |
2052 | |
2053 | /* wind winder:12 unwinder:12 | |
2054 | * | |
2055 | * Push wind and unwind procedures onto the dynamic stack. Note that | |
2056 | * neither are actually called; the compiler should emit calls to wind | |
2057 | * and unwind for the normal dynamic-wind control flow. Also note that | |
2058 | * the compiler should have inserted checks that they wind and unwind | |
2059 | * procs are thunks, if it could not prove that to be the case. | |
2060 | */ | |
f90c0554 | 2061 | VM_DEFINE_OP (63, wind, "wind", OP1 (U8_U12_U12)) |
510ca126 AW |
2062 | { |
2063 | scm_t_uint16 winder, unwinder; | |
20b1b913 | 2064 | UNPACK_12_12 (op, winder, unwinder); |
510ca126 AW |
2065 | scm_dynstack_push_dynwind (¤t_thread->dynstack, |
2066 | LOCAL_REF (winder), LOCAL_REF (unwinder)); | |
2067 | NEXT (1); | |
2068 | } | |
2069 | ||
510ca126 AW |
2070 | /* unwind _:24 |
2071 | * | |
2072 | * A normal exit from the dynamic extent of an expression. Pop the top | |
2073 | * entry off of the dynamic stack. | |
2074 | */ | |
f90c0554 | 2075 | VM_DEFINE_OP (64, unwind, "unwind", OP1 (U8_X24)) |
510ca126 AW |
2076 | { |
2077 | scm_dynstack_pop (¤t_thread->dynstack); | |
2078 | NEXT (1); | |
2079 | } | |
2080 | ||
98eaef1b | 2081 | /* push-fluid fluid:12 value:12 |
510ca126 AW |
2082 | * |
2083 | * Dynamically bind N fluids to values. The fluids are expected to be | |
2084 | * allocated in a continguous range on the stack, starting from | |
2085 | * FLUID-BASE. The values do not have this restriction. | |
2086 | */ | |
f90c0554 | 2087 | VM_DEFINE_OP (65, push_fluid, "push-fluid", OP1 (U8_U12_U12)) |
510ca126 | 2088 | { |
98eaef1b | 2089 | scm_t_uint32 fluid, value; |
510ca126 | 2090 | |
20b1b913 | 2091 | UNPACK_12_12 (op, fluid, value); |
510ca126 | 2092 | |
98eaef1b | 2093 | scm_dynstack_push_fluid (¤t_thread->dynstack, |
2a4ee2ac | 2094 | LOCAL_REF (fluid), LOCAL_REF (value), |
98eaef1b AW |
2095 | current_thread->dynamic_state); |
2096 | NEXT (1); | |
510ca126 | 2097 | } |
510ca126 | 2098 | |
98eaef1b | 2099 | /* pop-fluid _:24 |
510ca126 AW |
2100 | * |
2101 | * Leave the dynamic extent of a with-fluids expression, restoring the | |
2102 | * fluids to their previous values. | |
2103 | */ | |
f90c0554 | 2104 | VM_DEFINE_OP (66, pop_fluid, "pop-fluid", OP1 (U8_X24)) |
510ca126 AW |
2105 | { |
2106 | /* This function must not allocate. */ | |
98eaef1b AW |
2107 | scm_dynstack_unwind_fluid (¤t_thread->dynstack, |
2108 | current_thread->dynamic_state); | |
510ca126 AW |
2109 | NEXT (1); |
2110 | } | |
2111 | ||
2112 | /* fluid-ref dst:12 src:12 | |
2113 | * | |
2114 | * Reference the fluid in SRC, and place the value in DST. | |
2115 | */ | |
f90c0554 | 2116 | VM_DEFINE_OP (67, fluid_ref, "fluid-ref", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2117 | { |
2118 | scm_t_uint16 dst, src; | |
2119 | size_t num; | |
2120 | SCM fluid, fluids; | |
2121 | ||
20b1b913 | 2122 | UNPACK_12_12 (op, dst, src); |
510ca126 AW |
2123 | fluid = LOCAL_REF (src); |
2124 | fluids = SCM_I_DYNAMIC_STATE_FLUIDS (current_thread->dynamic_state); | |
2125 | if (SCM_UNLIKELY (!SCM_FLUID_P (fluid)) | |
2126 | || ((num = SCM_I_FLUID_NUM (fluid)) >= SCM_SIMPLE_VECTOR_LENGTH (fluids))) | |
2127 | { | |
2128 | /* Punt dynstate expansion and error handling to the C proc. */ | |
2129 | SYNC_IP (); | |
2130 | LOCAL_SET (dst, scm_fluid_ref (fluid)); | |
2131 | } | |
2132 | else | |
2133 | { | |
2134 | SCM val = SCM_SIMPLE_VECTOR_REF (fluids, num); | |
2135 | if (scm_is_eq (val, SCM_UNDEFINED)) | |
2136 | val = SCM_I_FLUID_DEFAULT (fluid); | |
2137 | VM_ASSERT (!scm_is_eq (val, SCM_UNDEFINED), | |
2138 | vm_error_unbound_fluid (program, fluid)); | |
2139 | LOCAL_SET (dst, val); | |
2140 | } | |
2141 | ||
2142 | NEXT (1); | |
2143 | } | |
2144 | ||
2145 | /* fluid-set fluid:12 val:12 | |
2146 | * | |
2147 | * Set the value of the fluid in DST to the value in SRC. | |
2148 | */ | |
f90c0554 | 2149 | VM_DEFINE_OP (68, fluid_set, "fluid-set", OP1 (U8_U12_U12)) |
510ca126 AW |
2150 | { |
2151 | scm_t_uint16 a, b; | |
2152 | size_t num; | |
2153 | SCM fluid, fluids; | |
2154 | ||
20b1b913 | 2155 | UNPACK_12_12 (op, a, b); |
510ca126 AW |
2156 | fluid = LOCAL_REF (a); |
2157 | fluids = SCM_I_DYNAMIC_STATE_FLUIDS (current_thread->dynamic_state); | |
2158 | if (SCM_UNLIKELY (!SCM_FLUID_P (fluid)) | |
2159 | || ((num = SCM_I_FLUID_NUM (fluid)) >= SCM_SIMPLE_VECTOR_LENGTH (fluids))) | |
2160 | { | |
2161 | /* Punt dynstate expansion and error handling to the C proc. */ | |
2162 | SYNC_IP (); | |
2163 | scm_fluid_set_x (fluid, LOCAL_REF (b)); | |
2164 | } | |
2165 | else | |
2166 | SCM_SIMPLE_VECTOR_SET (fluids, num, LOCAL_REF (b)); | |
2167 | ||
2168 | NEXT (1); | |
2169 | } | |
2170 | ||
2171 | ||
2172 | \f | |
2173 | ||
2174 | /* | |
2175 | * Strings, symbols, and keywords | |
2176 | */ | |
2177 | ||
2178 | /* string-length dst:12 src:12 | |
2179 | * | |
2180 | * Store the length of the string in SRC in DST. | |
2181 | */ | |
f90c0554 | 2182 | VM_DEFINE_OP (69, string_length, "string-length", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2183 | { |
2184 | ARGS1 (str); | |
2185 | if (SCM_LIKELY (scm_is_string (str))) | |
2186 | RETURN (SCM_I_MAKINUM (scm_i_string_length (str))); | |
2187 | else | |
2188 | { | |
2189 | SYNC_IP (); | |
2190 | RETURN (scm_string_length (str)); | |
2191 | } | |
2192 | } | |
2193 | ||
2194 | /* string-ref dst:8 src:8 idx:8 | |
2195 | * | |
2196 | * Fetch the character at position IDX in the string in SRC, and store | |
2197 | * it in DST. | |
2198 | */ | |
f90c0554 | 2199 | VM_DEFINE_OP (70, string_ref, "string-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2200 | { |
2201 | scm_t_signed_bits i = 0; | |
2202 | ARGS2 (str, idx); | |
2203 | if (SCM_LIKELY (scm_is_string (str) | |
2204 | && SCM_I_INUMP (idx) | |
2205 | && ((i = SCM_I_INUM (idx)) >= 0) | |
2206 | && i < scm_i_string_length (str))) | |
2207 | RETURN (SCM_MAKE_CHAR (scm_i_string_ref (str, i))); | |
2208 | else | |
2209 | { | |
2210 | SYNC_IP (); | |
2211 | RETURN (scm_string_ref (str, idx)); | |
2212 | } | |
2213 | } | |
2214 | ||
2215 | /* No string-set! instruction, as there is no good fast path there. */ | |
2216 | ||
2217 | /* string-to-number dst:12 src:12 | |
2218 | * | |
2219 | * Parse a string in SRC to a number, and store in DST. | |
2220 | */ | |
f90c0554 | 2221 | VM_DEFINE_OP (71, string_to_number, "string->number", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2222 | { |
2223 | scm_t_uint16 dst, src; | |
2224 | ||
20b1b913 | 2225 | UNPACK_12_12 (op, dst, src); |
510ca126 AW |
2226 | SYNC_IP (); |
2227 | LOCAL_SET (dst, | |
2228 | scm_string_to_number (LOCAL_REF (src), | |
2229 | SCM_UNDEFINED /* radix = 10 */)); | |
2230 | NEXT (1); | |
2231 | } | |
2232 | ||
2233 | /* string-to-symbol dst:12 src:12 | |
2234 | * | |
2235 | * Parse a string in SRC to a symbol, and store in DST. | |
2236 | */ | |
f90c0554 | 2237 | VM_DEFINE_OP (72, string_to_symbol, "string->symbol", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2238 | { |
2239 | scm_t_uint16 dst, src; | |
2240 | ||
20b1b913 | 2241 | UNPACK_12_12 (op, dst, src); |
510ca126 AW |
2242 | SYNC_IP (); |
2243 | LOCAL_SET (dst, scm_string_to_symbol (LOCAL_REF (src))); | |
2244 | NEXT (1); | |
2245 | } | |
2246 | ||
2247 | /* symbol->keyword dst:12 src:12 | |
2248 | * | |
2249 | * Make a keyword from the symbol in SRC, and store it in DST. | |
2250 | */ | |
f90c0554 | 2251 | VM_DEFINE_OP (73, symbol_to_keyword, "symbol->keyword", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2252 | { |
2253 | scm_t_uint16 dst, src; | |
20b1b913 | 2254 | UNPACK_12_12 (op, dst, src); |
510ca126 AW |
2255 | SYNC_IP (); |
2256 | LOCAL_SET (dst, scm_symbol_to_keyword (LOCAL_REF (src))); | |
2257 | NEXT (1); | |
2258 | } | |
2259 | ||
2260 | \f | |
2261 | ||
2262 | /* | |
2263 | * Pairs | |
2264 | */ | |
2265 | ||
2266 | /* cons dst:8 car:8 cdr:8 | |
2267 | * | |
2268 | * Cons CAR and CDR, and store the result in DST. | |
2269 | */ | |
f90c0554 | 2270 | VM_DEFINE_OP (74, cons, "cons", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2271 | { |
2272 | ARGS2 (x, y); | |
2273 | RETURN (scm_cons (x, y)); | |
2274 | } | |
2275 | ||
2276 | /* car dst:12 src:12 | |
2277 | * | |
2278 | * Place the car of SRC in DST. | |
2279 | */ | |
f90c0554 | 2280 | VM_DEFINE_OP (75, car, "car", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2281 | { |
2282 | ARGS1 (x); | |
2283 | VM_VALIDATE_PAIR (x, "car"); | |
2284 | RETURN (SCM_CAR (x)); | |
2285 | } | |
2286 | ||
2287 | /* cdr dst:12 src:12 | |
2288 | * | |
2289 | * Place the cdr of SRC in DST. | |
2290 | */ | |
f90c0554 | 2291 | VM_DEFINE_OP (76, cdr, "cdr", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2292 | { |
2293 | ARGS1 (x); | |
2294 | VM_VALIDATE_PAIR (x, "cdr"); | |
2295 | RETURN (SCM_CDR (x)); | |
2296 | } | |
2297 | ||
2298 | /* set-car! pair:12 car:12 | |
2299 | * | |
2300 | * Set the car of DST to SRC. | |
2301 | */ | |
f90c0554 | 2302 | VM_DEFINE_OP (77, set_car, "set-car!", OP1 (U8_U12_U12)) |
510ca126 AW |
2303 | { |
2304 | scm_t_uint16 a, b; | |
2305 | SCM x, y; | |
20b1b913 | 2306 | UNPACK_12_12 (op, a, b); |
510ca126 AW |
2307 | x = LOCAL_REF (a); |
2308 | y = LOCAL_REF (b); | |
2309 | VM_VALIDATE_PAIR (x, "set-car!"); | |
2310 | SCM_SETCAR (x, y); | |
2311 | NEXT (1); | |
2312 | } | |
2313 | ||
2314 | /* set-cdr! pair:12 cdr:12 | |
2315 | * | |
2316 | * Set the cdr of DST to SRC. | |
2317 | */ | |
f90c0554 | 2318 | VM_DEFINE_OP (78, set_cdr, "set-cdr!", OP1 (U8_U12_U12)) |
510ca126 AW |
2319 | { |
2320 | scm_t_uint16 a, b; | |
2321 | SCM x, y; | |
20b1b913 | 2322 | UNPACK_12_12 (op, a, b); |
510ca126 AW |
2323 | x = LOCAL_REF (a); |
2324 | y = LOCAL_REF (b); | |
2325 | VM_VALIDATE_PAIR (x, "set-car!"); | |
2326 | SCM_SETCDR (x, y); | |
2327 | NEXT (1); | |
2328 | } | |
2329 | ||
2330 | ||
2331 | \f | |
2332 | ||
2333 | /* | |
2334 | * Numeric operations | |
2335 | */ | |
2336 | ||
2337 | /* add dst:8 a:8 b:8 | |
2338 | * | |
2339 | * Add A to B, and place the result in DST. | |
2340 | */ | |
f90c0554 | 2341 | VM_DEFINE_OP (79, add, "add", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2342 | { |
2343 | BINARY_INTEGER_OP (+, scm_sum); | |
2344 | } | |
2345 | ||
2346 | /* add1 dst:12 src:12 | |
2347 | * | |
2348 | * Add 1 to the value in SRC, and place the result in DST. | |
2349 | */ | |
f90c0554 | 2350 | VM_DEFINE_OP (80, add1, "add1", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2351 | { |
2352 | ARGS1 (x); | |
2353 | ||
d2295ba5 MW |
2354 | /* Check for overflow. We must avoid overflow in the signed |
2355 | addition below, even if X is not an inum. */ | |
2356 | if (SCM_LIKELY ((scm_t_signed_bits) SCM_UNPACK (x) <= INUM_MAX - INUM_STEP)) | |
510ca126 AW |
2357 | { |
2358 | SCM result; | |
2359 | ||
d2295ba5 MW |
2360 | /* Add 1 to the integer without untagging. */ |
2361 | result = SCM_PACK ((scm_t_signed_bits) SCM_UNPACK (x) + INUM_STEP); | |
510ca126 AW |
2362 | |
2363 | if (SCM_LIKELY (SCM_I_INUMP (result))) | |
2364 | RETURN (result); | |
2365 | } | |
2366 | ||
2367 | SYNC_IP (); | |
2368 | RETURN (scm_sum (x, SCM_I_MAKINUM (1))); | |
2369 | } | |
2370 | ||
2371 | /* sub dst:8 a:8 b:8 | |
2372 | * | |
2373 | * Subtract B from A, and place the result in DST. | |
2374 | */ | |
f90c0554 | 2375 | VM_DEFINE_OP (81, sub, "sub", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2376 | { |
2377 | BINARY_INTEGER_OP (-, scm_difference); | |
2378 | } | |
2379 | ||
2380 | /* sub1 dst:12 src:12 | |
2381 | * | |
2382 | * Subtract 1 from SRC, and place the result in DST. | |
2383 | */ | |
f90c0554 | 2384 | VM_DEFINE_OP (82, sub1, "sub1", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2385 | { |
2386 | ARGS1 (x); | |
2387 | ||
d2295ba5 MW |
2388 | /* Check for overflow. We must avoid overflow in the signed |
2389 | subtraction below, even if X is not an inum. */ | |
2390 | if (SCM_LIKELY ((scm_t_signed_bits) SCM_UNPACK (x) >= INUM_MIN + INUM_STEP)) | |
510ca126 AW |
2391 | { |
2392 | SCM result; | |
2393 | ||
d2295ba5 MW |
2394 | /* Substract 1 from the integer without untagging. */ |
2395 | result = SCM_PACK ((scm_t_signed_bits) SCM_UNPACK (x) - INUM_STEP); | |
510ca126 AW |
2396 | |
2397 | if (SCM_LIKELY (SCM_I_INUMP (result))) | |
2398 | RETURN (result); | |
2399 | } | |
2400 | ||
2401 | SYNC_IP (); | |
2402 | RETURN (scm_difference (x, SCM_I_MAKINUM (1))); | |
2403 | } | |
2404 | ||
2405 | /* mul dst:8 a:8 b:8 | |
2406 | * | |
2407 | * Multiply A and B, and place the result in DST. | |
2408 | */ | |
f90c0554 | 2409 | VM_DEFINE_OP (83, mul, "mul", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2410 | { |
2411 | ARGS2 (x, y); | |
2412 | SYNC_IP (); | |
2413 | RETURN (scm_product (x, y)); | |
2414 | } | |
2415 | ||
2416 | /* div dst:8 a:8 b:8 | |
2417 | * | |
2418 | * Divide A by B, and place the result in DST. | |
2419 | */ | |
f90c0554 | 2420 | VM_DEFINE_OP (84, div, "div", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2421 | { |
2422 | ARGS2 (x, y); | |
2423 | SYNC_IP (); | |
2424 | RETURN (scm_divide (x, y)); | |
2425 | } | |
2426 | ||
2427 | /* quo dst:8 a:8 b:8 | |
2428 | * | |
2429 | * Divide A by B, and place the quotient in DST. | |
2430 | */ | |
f90c0554 | 2431 | VM_DEFINE_OP (85, quo, "quo", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2432 | { |
2433 | ARGS2 (x, y); | |
2434 | SYNC_IP (); | |
2435 | RETURN (scm_quotient (x, y)); | |
2436 | } | |
2437 | ||
2438 | /* rem dst:8 a:8 b:8 | |
2439 | * | |
2440 | * Divide A by B, and place the remainder in DST. | |
2441 | */ | |
f90c0554 | 2442 | VM_DEFINE_OP (86, rem, "rem", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2443 | { |
2444 | ARGS2 (x, y); | |
2445 | SYNC_IP (); | |
2446 | RETURN (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 | */ | |
f90c0554 | 2453 | VM_DEFINE_OP (87, mod, "mod", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2454 | { |
2455 | ARGS2 (x, y); | |
2456 | SYNC_IP (); | |
2457 | RETURN (scm_modulo (x, y)); | |
2458 | } | |
2459 | ||
2460 | /* ash dst:8 a:8 b:8 | |
2461 | * | |
2462 | * Shift A arithmetically by B bits, and place the result in DST. | |
2463 | */ | |
f90c0554 | 2464 | VM_DEFINE_OP (88, ash, "ash", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2465 | { |
2466 | ARGS2 (x, y); | |
2467 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) | |
2468 | { | |
2469 | if (SCM_I_INUM (y) < 0) | |
2470 | /* Right shift, will be a fixnum. */ | |
0bd65965 MW |
2471 | RETURN (SCM_I_MAKINUM |
2472 | (SCM_SRS (SCM_I_INUM (x), | |
2473 | (-SCM_I_INUM (y) <= SCM_I_FIXNUM_BIT-1) | |
2474 | ? -SCM_I_INUM (y) : SCM_I_FIXNUM_BIT-1))); | |
510ca126 AW |
2475 | else |
2476 | /* Left shift. See comments in scm_ash. */ | |
2477 | { | |
2478 | scm_t_signed_bits nn, bits_to_shift; | |
2479 | ||
2480 | nn = SCM_I_INUM (x); | |
2481 | bits_to_shift = SCM_I_INUM (y); | |
2482 | ||
2483 | if (bits_to_shift < SCM_I_FIXNUM_BIT-1 | |
2484 | && ((scm_t_bits) | |
2485 | (SCM_SRS (nn, (SCM_I_FIXNUM_BIT-1 - bits_to_shift)) + 1) | |
2486 | <= 1)) | |
2487 | RETURN (SCM_I_MAKINUM (nn << bits_to_shift)); | |
2488 | /* fall through */ | |
2489 | } | |
2490 | /* fall through */ | |
2491 | } | |
2492 | SYNC_IP (); | |
2493 | RETURN (scm_ash (x, y)); | |
2494 | } | |
2495 | ||
2496 | /* logand dst:8 a:8 b:8 | |
2497 | * | |
2498 | * Place the bitwise AND of A and B into DST. | |
2499 | */ | |
f90c0554 | 2500 | VM_DEFINE_OP (89, logand, "logand", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2501 | { |
2502 | ARGS2 (x, y); | |
2503 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) | |
e7f64971 MW |
2504 | /* Compute bitwise AND without untagging */ |
2505 | RETURN (SCM_PACK (SCM_UNPACK (x) & SCM_UNPACK (y))); | |
510ca126 AW |
2506 | SYNC_IP (); |
2507 | RETURN (scm_logand (x, y)); | |
2508 | } | |
2509 | ||
2510 | /* logior dst:8 a:8 b:8 | |
2511 | * | |
2512 | * Place the bitwise inclusive OR of A with B in DST. | |
2513 | */ | |
f90c0554 | 2514 | VM_DEFINE_OP (90, logior, "logior", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2515 | { |
2516 | ARGS2 (x, y); | |
2517 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) | |
e7f64971 MW |
2518 | /* Compute bitwise OR without untagging */ |
2519 | RETURN (SCM_PACK (SCM_UNPACK (x) | SCM_UNPACK (y))); | |
510ca126 AW |
2520 | SYNC_IP (); |
2521 | RETURN (scm_logior (x, y)); | |
2522 | } | |
2523 | ||
2524 | /* logxor dst:8 a:8 b:8 | |
2525 | * | |
2526 | * Place the bitwise exclusive OR of A with B in DST. | |
2527 | */ | |
f90c0554 | 2528 | VM_DEFINE_OP (91, logxor, "logxor", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2529 | { |
2530 | ARGS2 (x, y); | |
2531 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) | |
2532 | RETURN (SCM_I_MAKINUM (SCM_I_INUM (x) ^ SCM_I_INUM (y))); | |
2533 | SYNC_IP (); | |
2534 | RETURN (scm_logxor (x, y)); | |
2535 | } | |
2536 | ||
4c906ad5 | 2537 | /* make-vector/immediate dst:8 length:8 init:8 |
607fe5a6 AW |
2538 | * |
2539 | * Make a short vector of known size and write it to DST. The vector | |
2540 | * will have space for LENGTH slots, an immediate value. They will be | |
2541 | * filled with the value in slot INIT. | |
2542 | */ | |
4c906ad5 | 2543 | VM_DEFINE_OP (92, make_vector_immediate, "make-vector/immediate", OP1 (U8_U8_U8_U8) | OP_DST) |
607fe5a6 AW |
2544 | { |
2545 | scm_t_uint8 dst, init; | |
2546 | scm_t_int32 length, n; | |
2547 | SCM val, vector; | |
2548 | ||
20b1b913 | 2549 | UNPACK_8_8_8 (op, dst, length, init); |
607fe5a6 AW |
2550 | |
2551 | val = LOCAL_REF (init); | |
2552 | vector = scm_words (scm_tc7_vector | (length << 8), length + 1); | |
2553 | for (n = 0; n < length; n++) | |
2554 | SCM_SIMPLE_VECTOR_SET (vector, n, val); | |
2555 | LOCAL_SET (dst, vector); | |
2556 | NEXT (1); | |
2557 | } | |
2558 | ||
510ca126 AW |
2559 | /* vector-length dst:12 src:12 |
2560 | * | |
2561 | * Store the length of the vector in SRC in DST. | |
2562 | */ | |
4c906ad5 | 2563 | VM_DEFINE_OP (93, vector_length, "vector-length", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2564 | { |
2565 | ARGS1 (vect); | |
2566 | if (SCM_LIKELY (SCM_I_IS_VECTOR (vect))) | |
2567 | RETURN (SCM_I_MAKINUM (SCM_I_VECTOR_LENGTH (vect))); | |
2568 | else | |
2569 | { | |
2570 | SYNC_IP (); | |
2571 | RETURN (scm_vector_length (vect)); | |
2572 | } | |
2573 | } | |
2574 | ||
2575 | /* vector-ref dst:8 src:8 idx:8 | |
2576 | * | |
2577 | * Fetch the item at position IDX in the vector in SRC, and store it | |
2578 | * in DST. | |
2579 | */ | |
4c906ad5 | 2580 | VM_DEFINE_OP (94, vector_ref, "vector-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2581 | { |
2582 | scm_t_signed_bits i = 0; | |
2583 | ARGS2 (vect, idx); | |
2584 | if (SCM_LIKELY (SCM_I_IS_NONWEAK_VECTOR (vect) | |
2585 | && SCM_I_INUMP (idx) | |
2586 | && ((i = SCM_I_INUM (idx)) >= 0) | |
2587 | && i < SCM_I_VECTOR_LENGTH (vect))) | |
2588 | RETURN (SCM_I_VECTOR_ELTS (vect)[i]); | |
2589 | else | |
2590 | { | |
2591 | SYNC_IP (); | |
2592 | RETURN (scm_vector_ref (vect, idx)); | |
2593 | } | |
2594 | } | |
2595 | ||
4c906ad5 | 2596 | /* vector-ref/immediate dst:8 src:8 idx:8 |
510ca126 AW |
2597 | * |
2598 | * Fill DST with the item IDX elements into the vector at SRC. Useful | |
2599 | * for building data types using vectors. | |
2600 | */ | |
4c906ad5 | 2601 | VM_DEFINE_OP (95, vector_ref_immediate, "vector-ref/immediate", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2602 | { |
2603 | scm_t_uint8 dst, src, idx; | |
2604 | SCM v; | |
2605 | ||
20b1b913 | 2606 | UNPACK_8_8_8 (op, dst, src, idx); |
510ca126 AW |
2607 | v = LOCAL_REF (src); |
2608 | if (SCM_LIKELY (SCM_I_IS_NONWEAK_VECTOR (v) | |
2609 | && idx < SCM_I_VECTOR_LENGTH (v))) | |
2610 | LOCAL_SET (dst, SCM_I_VECTOR_ELTS (LOCAL_REF (src))[idx]); | |
2611 | else | |
2612 | LOCAL_SET (dst, scm_c_vector_ref (v, idx)); | |
2613 | NEXT (1); | |
2614 | } | |
2615 | ||
2616 | /* vector-set! dst:8 idx:8 src:8 | |
2617 | * | |
2618 | * Store SRC into the vector DST at index IDX. | |
2619 | */ | |
4c906ad5 | 2620 | VM_DEFINE_OP (96, vector_set, "vector-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
2621 | { |
2622 | scm_t_uint8 dst, idx_var, src; | |
2623 | SCM vect, idx, val; | |
2624 | scm_t_signed_bits i = 0; | |
2625 | ||
20b1b913 | 2626 | UNPACK_8_8_8 (op, dst, idx_var, src); |
510ca126 AW |
2627 | vect = LOCAL_REF (dst); |
2628 | idx = LOCAL_REF (idx_var); | |
2629 | val = LOCAL_REF (src); | |
2630 | ||
2631 | if (SCM_LIKELY (SCM_I_IS_NONWEAK_VECTOR (vect) | |
2632 | && SCM_I_INUMP (idx) | |
2633 | && ((i = SCM_I_INUM (idx)) >= 0) | |
2634 | && i < SCM_I_VECTOR_LENGTH (vect))) | |
2635 | SCM_I_VECTOR_WELTS (vect)[i] = val; | |
2636 | else | |
2637 | { | |
2638 | SYNC_IP (); | |
2639 | scm_vector_set_x (vect, idx, val); | |
2640 | } | |
2641 | NEXT (1); | |
2642 | } | |
2643 | ||
4c906ad5 | 2644 | /* vector-set!/immediate dst:8 idx:8 src:8 |
8ba3f20c AW |
2645 | * |
2646 | * Store SRC into the vector DST at index IDX. Here IDX is an | |
2647 | * immediate value. | |
2648 | */ | |
4c906ad5 | 2649 | VM_DEFINE_OP (97, vector_set_immediate, "vector-set!/immediate", OP1 (U8_U8_U8_U8)) |
8ba3f20c AW |
2650 | { |
2651 | scm_t_uint8 dst, idx, src; | |
2652 | SCM vect, val; | |
2653 | ||
20b1b913 | 2654 | UNPACK_8_8_8 (op, dst, idx, src); |
8ba3f20c AW |
2655 | vect = LOCAL_REF (dst); |
2656 | val = LOCAL_REF (src); | |
2657 | ||
2658 | if (SCM_LIKELY (SCM_I_IS_NONWEAK_VECTOR (vect) | |
2659 | && idx < SCM_I_VECTOR_LENGTH (vect))) | |
2660 | SCM_I_VECTOR_WELTS (vect)[idx] = val; | |
2661 | else | |
2662 | { | |
2663 | SYNC_IP (); | |
2664 | scm_vector_set_x (vect, scm_from_uint8 (idx), val); | |
2665 | } | |
2666 | NEXT (1); | |
2667 | } | |
2668 | ||
510ca126 AW |
2669 | |
2670 | \f | |
2671 | ||
2672 | /* | |
2673 | * Structs and GOOPS | |
2674 | */ | |
2675 | ||
2676 | /* struct-vtable dst:12 src:12 | |
2677 | * | |
2678 | * Store the vtable of SRC into DST. | |
2679 | */ | |
4c906ad5 | 2680 | VM_DEFINE_OP (98, struct_vtable, "struct-vtable", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2681 | { |
2682 | ARGS1 (obj); | |
2683 | VM_VALIDATE_STRUCT (obj, "struct_vtable"); | |
2684 | RETURN (SCM_STRUCT_VTABLE (obj)); | |
2685 | } | |
2686 | ||
4c906ad5 | 2687 | /* allocate-struct/immediate dst:8 vtable:8 nfields:8 |
510ca126 | 2688 | * |
14d10292 AW |
2689 | * Allocate a new struct with VTABLE, and place it in DST. The struct |
2690 | * will be constructed with space for NFIELDS fields, which should | |
2691 | * correspond to the field count of the VTABLE. | |
510ca126 | 2692 | */ |
4c906ad5 | 2693 | VM_DEFINE_OP (99, allocate_struct_immediate, "allocate-struct/immediate", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 | 2694 | { |
14d10292 AW |
2695 | scm_t_uint8 dst, vtable, nfields; |
2696 | SCM ret; | |
510ca126 | 2697 | |
20b1b913 | 2698 | UNPACK_8_8_8 (op, dst, vtable, nfields); |
510ca126 AW |
2699 | |
2700 | SYNC_IP (); | |
14d10292 | 2701 | ret = scm_allocate_struct (LOCAL_REF (vtable), SCM_I_MAKINUM (nfields)); |
510ca126 | 2702 | LOCAL_SET (dst, ret); |
14d10292 AW |
2703 | |
2704 | NEXT (1); | |
510ca126 | 2705 | } |
510ca126 | 2706 | |
4c906ad5 | 2707 | /* struct-ref/immediate dst:8 src:8 idx:8 |
510ca126 AW |
2708 | * |
2709 | * Fetch the item at slot IDX in the struct in SRC, and store it | |
4c906ad5 | 2710 | * in DST. IDX is an immediate unsigned 8-bit value. |
510ca126 | 2711 | */ |
4c906ad5 | 2712 | VM_DEFINE_OP (100, struct_ref_immediate, "struct-ref/immediate", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 | 2713 | { |
4c906ad5 AW |
2714 | scm_t_uint8 dst, src, idx; |
2715 | SCM obj; | |
2716 | ||
20b1b913 | 2717 | UNPACK_8_8_8 (op, dst, src, idx); |
4c906ad5 AW |
2718 | |
2719 | obj = LOCAL_REF (src); | |
510ca126 AW |
2720 | |
2721 | if (SCM_LIKELY (SCM_STRUCTP (obj) | |
2722 | && SCM_STRUCT_VTABLE_FLAG_IS_SET (obj, | |
2723 | SCM_VTABLE_FLAG_SIMPLE) | |
4c906ad5 AW |
2724 | && idx < SCM_STRUCT_DATA_REF (SCM_STRUCT_VTABLE (obj), |
2725 | scm_vtable_index_size))) | |
2726 | RETURN (SCM_STRUCT_SLOT_REF (obj, idx)); | |
510ca126 AW |
2727 | |
2728 | SYNC_IP (); | |
4c906ad5 | 2729 | RETURN (scm_struct_ref (obj, SCM_I_MAKINUM (idx))); |
510ca126 AW |
2730 | } |
2731 | ||
4c906ad5 | 2732 | /* struct-set!/immediate dst:8 idx:8 src:8 |
510ca126 | 2733 | * |
4c906ad5 AW |
2734 | * Store SRC into the struct DST at slot IDX. IDX is an immediate |
2735 | * unsigned 8-bit value. | |
510ca126 | 2736 | */ |
4c906ad5 | 2737 | VM_DEFINE_OP (101, struct_set_immediate, "struct-set!/immediate", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
2738 | { |
2739 | scm_t_uint8 dst, idx, src; | |
4c906ad5 AW |
2740 | SCM obj, val; |
2741 | ||
20b1b913 | 2742 | UNPACK_8_8_8 (op, dst, idx, src); |
4c906ad5 | 2743 | |
510ca126 | 2744 | obj = LOCAL_REF (dst); |
510ca126 | 2745 | val = LOCAL_REF (src); |
4c906ad5 | 2746 | |
510ca126 AW |
2747 | if (SCM_LIKELY (SCM_STRUCTP (obj) |
2748 | && SCM_STRUCT_VTABLE_FLAG_IS_SET (obj, | |
2749 | SCM_VTABLE_FLAG_SIMPLE) | |
2750 | && SCM_STRUCT_VTABLE_FLAG_IS_SET (obj, | |
2751 | SCM_VTABLE_FLAG_SIMPLE_RW) | |
4c906ad5 AW |
2752 | && idx < SCM_STRUCT_DATA_REF (SCM_STRUCT_VTABLE (obj), |
2753 | scm_vtable_index_size))) | |
510ca126 | 2754 | { |
4c906ad5 AW |
2755 | SCM_STRUCT_SLOT_SET (obj, idx, val); |
2756 | NEXT (1); | |
510ca126 AW |
2757 | } |
2758 | ||
2759 | SYNC_IP (); | |
4c906ad5 | 2760 | scm_struct_set_x (obj, SCM_I_MAKINUM (idx), val); |
510ca126 AW |
2761 | NEXT (1); |
2762 | } | |
2763 | ||
2764 | /* class-of dst:12 type:12 | |
2765 | * | |
2766 | * Store the vtable of SRC into DST. | |
2767 | */ | |
4c906ad5 | 2768 | VM_DEFINE_OP (102, class_of, "class-of", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2769 | { |
2770 | ARGS1 (obj); | |
2771 | if (SCM_INSTANCEP (obj)) | |
2772 | RETURN (SCM_CLASS_OF (obj)); | |
2773 | SYNC_IP (); | |
2774 | RETURN (scm_class_of (obj)); | |
2775 | } | |
2776 | ||
2777 | /* slot-ref dst:8 src:8 idx:8 | |
2778 | * | |
2779 | * Fetch the item at slot IDX in the struct in SRC, and store it in | |
2780 | * DST. Unlike struct-ref, IDX is an 8-bit immediate value, not an | |
2781 | * index into the stack. | |
2782 | */ | |
4c906ad5 | 2783 | VM_DEFINE_OP (103, slot_ref, "slot-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2784 | { |
2785 | scm_t_uint8 dst, src, idx; | |
20b1b913 | 2786 | UNPACK_8_8_8 (op, dst, src, idx); |
510ca126 AW |
2787 | LOCAL_SET (dst, |
2788 | SCM_PACK (SCM_STRUCT_DATA (LOCAL_REF (src))[idx])); | |
2789 | NEXT (1); | |
2790 | } | |
2791 | ||
2792 | /* slot-set! dst:8 idx:8 src:8 | |
2793 | * | |
2794 | * Store SRC into slot IDX of the struct in DST. Unlike struct-set!, | |
2795 | * IDX is an 8-bit immediate value, not an index into the stack. | |
2796 | */ | |
4c906ad5 | 2797 | VM_DEFINE_OP (104, slot_set, "slot-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
2798 | { |
2799 | scm_t_uint8 dst, idx, src; | |
20b1b913 | 2800 | UNPACK_8_8_8 (op, dst, idx, src); |
510ca126 AW |
2801 | SCM_STRUCT_DATA (LOCAL_REF (dst))[idx] = SCM_UNPACK (LOCAL_REF (src)); |
2802 | NEXT (1); | |
2803 | } | |
2804 | ||
2805 | ||
2806 | \f | |
2807 | ||
2808 | /* | |
2809 | * Arrays, packed uniform arrays, and bytevectors. | |
2810 | */ | |
2811 | ||
2812 | /* load-typed-array dst:8 type:8 shape:8 offset:32 len:32 | |
2813 | * | |
2814 | * Load the contiguous typed array located at OFFSET 32-bit words away | |
2815 | * from the instruction pointer, and store into DST. LEN is a byte | |
2816 | * length. OFFSET is signed. | |
2817 | */ | |
4c906ad5 | 2818 | VM_DEFINE_OP (105, load_typed_array, "load-typed-array", OP3 (U8_U8_U8_U8, N32, U32) | OP_DST) |
510ca126 AW |
2819 | { |
2820 | scm_t_uint8 dst, type, shape; | |
2821 | scm_t_int32 offset; | |
2822 | scm_t_uint32 len; | |
2823 | ||
20b1b913 | 2824 | UNPACK_8_8_8 (op, dst, type, shape); |
510ca126 AW |
2825 | offset = ip[1]; |
2826 | len = ip[2]; | |
2827 | SYNC_IP (); | |
2828 | LOCAL_SET (dst, scm_from_contiguous_typed_array (LOCAL_REF (type), | |
2829 | LOCAL_REF (shape), | |
2830 | ip + offset, len)); | |
2831 | NEXT (3); | |
2832 | } | |
2833 | ||
2834 | /* make-array dst:12 type:12 _:8 fill:12 bounds:12 | |
2835 | * | |
2836 | * Make a new array with TYPE, FILL, and BOUNDS, storing it in DST. | |
2837 | */ | |
4c906ad5 | 2838 | VM_DEFINE_OP (106, make_array, "make-array", OP2 (U8_U12_U12, X8_U12_U12) | OP_DST) |
510ca126 AW |
2839 | { |
2840 | scm_t_uint16 dst, type, fill, bounds; | |
20b1b913 AW |
2841 | UNPACK_12_12 (op, dst, type); |
2842 | UNPACK_12_12 (ip[1], fill, bounds); | |
510ca126 AW |
2843 | SYNC_IP (); |
2844 | LOCAL_SET (dst, scm_make_typed_array (LOCAL_REF (type), LOCAL_REF (fill), | |
2845 | LOCAL_REF (bounds))); | |
2846 | NEXT (2); | |
2847 | } | |
2848 | ||
2849 | /* bv-u8-ref dst:8 src:8 idx:8 | |
2850 | * bv-s8-ref dst:8 src:8 idx:8 | |
2851 | * bv-u16-ref dst:8 src:8 idx:8 | |
2852 | * bv-s16-ref dst:8 src:8 idx:8 | |
2853 | * bv-u32-ref dst:8 src:8 idx:8 | |
2854 | * bv-s32-ref dst:8 src:8 idx:8 | |
2855 | * bv-u64-ref dst:8 src:8 idx:8 | |
2856 | * bv-s64-ref dst:8 src:8 idx:8 | |
2857 | * bv-f32-ref dst:8 src:8 idx:8 | |
2858 | * bv-f64-ref dst:8 src:8 idx:8 | |
2859 | * | |
2860 | * Fetch the item at byte offset IDX in the bytevector SRC, and store | |
2861 | * it in DST. All accesses use native endianness. | |
2862 | */ | |
2863 | #define BV_FIXABLE_INT_REF(stem, fn_stem, type, size) \ | |
2864 | do { \ | |
2865 | scm_t_signed_bits i; \ | |
2866 | const scm_t_ ## type *int_ptr; \ | |
2867 | ARGS2 (bv, idx); \ | |
2868 | \ | |
2869 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-ref"); \ | |
2870 | i = SCM_I_INUM (idx); \ | |
2871 | int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
2872 | \ | |
2873 | if (SCM_LIKELY (SCM_I_INUMP (idx) \ | |
2874 | && (i >= 0) \ | |
2875 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
2876 | && (ALIGNED_P (int_ptr, scm_t_ ## type)))) \ | |
2877 | RETURN (SCM_I_MAKINUM (*int_ptr)); \ | |
2878 | else \ | |
2879 | { \ | |
2880 | SYNC_IP (); \ | |
2881 | RETURN (scm_bytevector_ ## fn_stem ## _ref (bv, idx)); \ | |
2882 | } \ | |
2883 | } while (0) | |
2884 | ||
2885 | #define BV_INT_REF(stem, type, size) \ | |
2886 | do { \ | |
2887 | scm_t_signed_bits i; \ | |
2888 | const scm_t_ ## type *int_ptr; \ | |
2889 | ARGS2 (bv, idx); \ | |
2890 | \ | |
2891 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-ref"); \ | |
2892 | i = SCM_I_INUM (idx); \ | |
2893 | int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
2894 | \ | |
2895 | if (SCM_LIKELY (SCM_I_INUMP (idx) \ | |
2896 | && (i >= 0) \ | |
2897 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
2898 | && (ALIGNED_P (int_ptr, scm_t_ ## type)))) \ | |
2899 | { \ | |
2900 | scm_t_ ## type x = *int_ptr; \ | |
2901 | if (SCM_FIXABLE (x)) \ | |
2902 | RETURN (SCM_I_MAKINUM (x)); \ | |
2903 | else \ | |
2904 | { \ | |
2905 | SYNC_IP (); \ | |
2906 | RETURN (scm_from_ ## type (x)); \ | |
2907 | } \ | |
2908 | } \ | |
2909 | else \ | |
2910 | { \ | |
2911 | SYNC_IP (); \ | |
2912 | RETURN (scm_bytevector_ ## stem ## _native_ref (bv, idx)); \ | |
2913 | } \ | |
2914 | } while (0) | |
2915 | ||
2916 | #define BV_FLOAT_REF(stem, fn_stem, type, size) \ | |
2917 | do { \ | |
2918 | scm_t_signed_bits i; \ | |
2919 | const type *float_ptr; \ | |
2920 | ARGS2 (bv, idx); \ | |
2921 | \ | |
2922 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-ref"); \ | |
2923 | i = SCM_I_INUM (idx); \ | |
2924 | float_ptr = (type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
2925 | \ | |
2926 | SYNC_IP (); \ | |
2927 | if (SCM_LIKELY (SCM_I_INUMP (idx) \ | |
2928 | && (i >= 0) \ | |
2929 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
2930 | && (ALIGNED_P (float_ptr, type)))) \ | |
2931 | RETURN (scm_from_double (*float_ptr)); \ | |
2932 | else \ | |
2933 | RETURN (scm_bytevector_ ## fn_stem ## _native_ref (bv, idx)); \ | |
2934 | } while (0) | |
2935 | ||
4c906ad5 | 2936 | VM_DEFINE_OP (107, bv_u8_ref, "bv-u8-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2937 | BV_FIXABLE_INT_REF (u8, u8, uint8, 1); |
2938 | ||
4c906ad5 | 2939 | VM_DEFINE_OP (108, bv_s8_ref, "bv-s8-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2940 | BV_FIXABLE_INT_REF (s8, s8, int8, 1); |
2941 | ||
4c906ad5 | 2942 | VM_DEFINE_OP (109, bv_u16_ref, "bv-u16-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2943 | BV_FIXABLE_INT_REF (u16, u16_native, uint16, 2); |
2944 | ||
4c906ad5 | 2945 | VM_DEFINE_OP (110, bv_s16_ref, "bv-s16-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2946 | BV_FIXABLE_INT_REF (s16, s16_native, int16, 2); |
2947 | ||
4c906ad5 | 2948 | VM_DEFINE_OP (111, bv_u32_ref, "bv-u32-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2949 | #if SIZEOF_VOID_P > 4 |
2950 | BV_FIXABLE_INT_REF (u32, u32_native, uint32, 4); | |
2951 | #else | |
2952 | BV_INT_REF (u32, uint32, 4); | |
2953 | #endif | |
2954 | ||
4c906ad5 | 2955 | VM_DEFINE_OP (112, bv_s32_ref, "bv-s32-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2956 | #if SIZEOF_VOID_P > 4 |
2957 | BV_FIXABLE_INT_REF (s32, s32_native, int32, 4); | |
2958 | #else | |
2959 | BV_INT_REF (s32, int32, 4); | |
2960 | #endif | |
2961 | ||
4c906ad5 | 2962 | VM_DEFINE_OP (113, bv_u64_ref, "bv-u64-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2963 | BV_INT_REF (u64, uint64, 8); |
2964 | ||
4c906ad5 | 2965 | VM_DEFINE_OP (114, bv_s64_ref, "bv-s64-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2966 | BV_INT_REF (s64, int64, 8); |
2967 | ||
4c906ad5 | 2968 | VM_DEFINE_OP (115, bv_f32_ref, "bv-f32-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2969 | BV_FLOAT_REF (f32, ieee_single, float, 4); |
2970 | ||
4c906ad5 | 2971 | VM_DEFINE_OP (116, bv_f64_ref, "bv-f64-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2972 | BV_FLOAT_REF (f64, ieee_double, double, 8); |
2973 | ||
2974 | /* bv-u8-set! dst:8 idx:8 src:8 | |
2975 | * bv-s8-set! dst:8 idx:8 src:8 | |
2976 | * bv-u16-set! dst:8 idx:8 src:8 | |
2977 | * bv-s16-set! dst:8 idx:8 src:8 | |
2978 | * bv-u32-set! dst:8 idx:8 src:8 | |
2979 | * bv-s32-set! dst:8 idx:8 src:8 | |
2980 | * bv-u64-set! dst:8 idx:8 src:8 | |
2981 | * bv-s64-set! dst:8 idx:8 src:8 | |
2982 | * bv-f32-set! dst:8 idx:8 src:8 | |
2983 | * bv-f64-set! dst:8 idx:8 src:8 | |
2984 | * | |
2985 | * Store SRC into the bytevector DST at byte offset IDX. Multibyte | |
2986 | * values are written using native endianness. | |
2987 | */ | |
2988 | #define BV_FIXABLE_INT_SET(stem, fn_stem, type, min, max, size) \ | |
2989 | do { \ | |
2990 | scm_t_uint8 dst, idx, src; \ | |
2991 | scm_t_signed_bits i, j = 0; \ | |
2992 | SCM bv, scm_idx, val; \ | |
2993 | scm_t_ ## type *int_ptr; \ | |
2994 | \ | |
20b1b913 | 2995 | UNPACK_8_8_8 (op, dst, idx, src); \ |
510ca126 AW |
2996 | bv = LOCAL_REF (dst); \ |
2997 | scm_idx = LOCAL_REF (idx); \ | |
2998 | val = LOCAL_REF (src); \ | |
ecbef966 | 2999 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-set!"); \ |
510ca126 AW |
3000 | i = SCM_I_INUM (scm_idx); \ |
3001 | int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
3002 | \ | |
3003 | if (SCM_LIKELY (SCM_I_INUMP (scm_idx) \ | |
3004 | && (i >= 0) \ | |
3005 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
3006 | && (ALIGNED_P (int_ptr, scm_t_ ## type)) \ | |
3007 | && (SCM_I_INUMP (val)) \ | |
3008 | && ((j = SCM_I_INUM (val)) >= min) \ | |
3009 | && (j <= max))) \ | |
3010 | *int_ptr = (scm_t_ ## type) j; \ | |
3011 | else \ | |
3012 | { \ | |
3013 | SYNC_IP (); \ | |
3014 | scm_bytevector_ ## fn_stem ## _set_x (bv, scm_idx, val); \ | |
3015 | } \ | |
3016 | NEXT (1); \ | |
3017 | } while (0) | |
3018 | ||
3019 | #define BV_INT_SET(stem, type, size) \ | |
3020 | do { \ | |
3021 | scm_t_uint8 dst, idx, src; \ | |
3022 | scm_t_signed_bits i; \ | |
3023 | SCM bv, scm_idx, val; \ | |
3024 | scm_t_ ## type *int_ptr; \ | |
3025 | \ | |
20b1b913 | 3026 | UNPACK_8_8_8 (op, dst, idx, src); \ |
510ca126 AW |
3027 | bv = LOCAL_REF (dst); \ |
3028 | scm_idx = LOCAL_REF (idx); \ | |
3029 | val = LOCAL_REF (src); \ | |
ecbef966 | 3030 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-set!"); \ |
510ca126 AW |
3031 | i = SCM_I_INUM (scm_idx); \ |
3032 | int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
3033 | \ | |
3034 | if (SCM_LIKELY (SCM_I_INUMP (scm_idx) \ | |
3035 | && (i >= 0) \ | |
3036 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
3037 | && (ALIGNED_P (int_ptr, scm_t_ ## type)))) \ | |
3038 | *int_ptr = scm_to_ ## type (val); \ | |
3039 | else \ | |
3040 | { \ | |
3041 | SYNC_IP (); \ | |
3042 | scm_bytevector_ ## stem ## _native_set_x (bv, scm_idx, val); \ | |
3043 | } \ | |
3044 | NEXT (1); \ | |
3045 | } while (0) | |
3046 | ||
3047 | #define BV_FLOAT_SET(stem, fn_stem, type, size) \ | |
3048 | do { \ | |
3049 | scm_t_uint8 dst, idx, src; \ | |
3050 | scm_t_signed_bits i; \ | |
3051 | SCM bv, scm_idx, val; \ | |
3052 | type *float_ptr; \ | |
3053 | \ | |
20b1b913 | 3054 | UNPACK_8_8_8 (op, dst, idx, src); \ |
510ca126 AW |
3055 | bv = LOCAL_REF (dst); \ |
3056 | scm_idx = LOCAL_REF (idx); \ | |
3057 | val = LOCAL_REF (src); \ | |
ecbef966 | 3058 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-set!"); \ |
510ca126 AW |
3059 | i = SCM_I_INUM (scm_idx); \ |
3060 | float_ptr = (type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
3061 | \ | |
3062 | if (SCM_LIKELY (SCM_I_INUMP (scm_idx) \ | |
3063 | && (i >= 0) \ | |
3064 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
3065 | && (ALIGNED_P (float_ptr, type)))) \ | |
3066 | *float_ptr = scm_to_double (val); \ | |
3067 | else \ | |
3068 | { \ | |
3069 | SYNC_IP (); \ | |
3070 | scm_bytevector_ ## fn_stem ## _native_set_x (bv, scm_idx, val); \ | |
3071 | } \ | |
3072 | NEXT (1); \ | |
3073 | } while (0) | |
3074 | ||
4c906ad5 | 3075 | VM_DEFINE_OP (117, bv_u8_set, "bv-u8-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3076 | BV_FIXABLE_INT_SET (u8, u8, uint8, 0, SCM_T_UINT8_MAX, 1); |
3077 | ||
4c906ad5 | 3078 | VM_DEFINE_OP (118, bv_s8_set, "bv-s8-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3079 | BV_FIXABLE_INT_SET (s8, s8, int8, SCM_T_INT8_MIN, SCM_T_INT8_MAX, 1); |
3080 | ||
4c906ad5 | 3081 | VM_DEFINE_OP (119, bv_u16_set, "bv-u16-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3082 | BV_FIXABLE_INT_SET (u16, u16_native, uint16, 0, SCM_T_UINT16_MAX, 2); |
3083 | ||
4c906ad5 | 3084 | VM_DEFINE_OP (120, bv_s16_set, "bv-s16-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3085 | BV_FIXABLE_INT_SET (s16, s16_native, int16, SCM_T_INT16_MIN, SCM_T_INT16_MAX, 2); |
3086 | ||
4c906ad5 | 3087 | VM_DEFINE_OP (121, bv_u32_set, "bv-u32-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3088 | #if SIZEOF_VOID_P > 4 |
3089 | BV_FIXABLE_INT_SET (u32, u32_native, uint32, 0, SCM_T_UINT32_MAX, 4); | |
3090 | #else | |
3091 | BV_INT_SET (u32, uint32, 4); | |
3092 | #endif | |
3093 | ||
4c906ad5 | 3094 | VM_DEFINE_OP (122, bv_s32_set, "bv-s32-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3095 | #if SIZEOF_VOID_P > 4 |
3096 | BV_FIXABLE_INT_SET (s32, s32_native, int32, SCM_T_INT32_MIN, SCM_T_INT32_MAX, 4); | |
3097 | #else | |
3098 | BV_INT_SET (s32, int32, 4); | |
3099 | #endif | |
3100 | ||
4c906ad5 | 3101 | VM_DEFINE_OP (123, bv_u64_set, "bv-u64-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3102 | BV_INT_SET (u64, uint64, 8); |
3103 | ||
4c906ad5 | 3104 | VM_DEFINE_OP (124, bv_s64_set, "bv-s64-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3105 | BV_INT_SET (s64, int64, 8); |
3106 | ||
4c906ad5 | 3107 | VM_DEFINE_OP (125, bv_f32_set, "bv-f32-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3108 | BV_FLOAT_SET (f32, ieee_single, float, 4); |
3109 | ||
4c906ad5 | 3110 | VM_DEFINE_OP (126, bv_f64_set, "bv-f64-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3111 | BV_FLOAT_SET (f64, ieee_double, double, 8); |
3112 | ||
3113 | END_DISPATCH_SWITCH; | |
3114 | ||
3115 | vm_error_bad_instruction: | |
3116 | vm_error_bad_instruction (op); | |
3117 | ||
3118 | abort (); /* never reached */ | |
3119 | } | |
3120 | ||
3121 | ||
3122 | #undef ABORT_CONTINUATION_HOOK | |
3123 | #undef ALIGNED_P | |
3124 | #undef APPLY_HOOK | |
3125 | #undef ARGS1 | |
3126 | #undef ARGS2 | |
3127 | #undef BEGIN_DISPATCH_SWITCH | |
3128 | #undef BINARY_INTEGER_OP | |
3129 | #undef BR_ARITHMETIC | |
3130 | #undef BR_BINARY | |
3131 | #undef BR_NARGS | |
3132 | #undef BR_UNARY | |
3133 | #undef BV_FIXABLE_INT_REF | |
3134 | #undef BV_FIXABLE_INT_SET | |
3135 | #undef BV_FLOAT_REF | |
3136 | #undef BV_FLOAT_SET | |
3137 | #undef BV_INT_REF | |
3138 | #undef BV_INT_SET | |
3139 | #undef CACHE_REGISTER | |
3140 | #undef CHECK_OVERFLOW | |
3141 | #undef END_DISPATCH_SWITCH | |
3142 | #undef FREE_VARIABLE_REF | |
3143 | #undef INIT | |
3144 | #undef INUM_MAX | |
3145 | #undef INUM_MIN | |
3146 | #undef LOCAL_REF | |
3147 | #undef LOCAL_SET | |
3148 | #undef NEXT | |
3149 | #undef NEXT_HOOK | |
3150 | #undef NEXT_JUMP | |
3151 | #undef POP_CONTINUATION_HOOK | |
3152 | #undef PUSH_CONTINUATION_HOOK | |
3153 | #undef RESTORE_CONTINUATION_HOOK | |
3154 | #undef RETURN | |
3155 | #undef RETURN_ONE_VALUE | |
3156 | #undef RETURN_VALUE_LIST | |
3157 | #undef RUN_HOOK | |
3158 | #undef RUN_HOOK0 | |
3159 | #undef SYNC_ALL | |
3160 | #undef SYNC_BEFORE_GC | |
3161 | #undef SYNC_IP | |
3162 | #undef SYNC_REGISTER | |
20b1b913 AW |
3163 | #undef UNPACK_8_8_8 |
3164 | #undef UNPACK_8_16 | |
3165 | #undef UNPACK_16_8 | |
3166 | #undef UNPACK_12_12 | |
3167 | #undef UNPACK_24 | |
510ca126 AW |
3168 | #undef VARIABLE_BOUNDP |
3169 | #undef VARIABLE_REF | |
3170 | #undef VARIABLE_SET | |
3171 | #undef VM_CHECK_FREE_VARIABLE | |
3172 | #undef VM_CHECK_OBJECT | |
3173 | #undef VM_CHECK_UNDERFLOW | |
3174 | #undef VM_DEFINE_OP | |
3175 | #undef VM_INSTRUCTION_TO_LABEL | |
3176 | #undef VM_USE_HOOKS | |
3177 | #undef VM_VALIDATE_BYTEVECTOR | |
3178 | #undef VM_VALIDATE_PAIR | |
3179 | #undef VM_VALIDATE_STRUCT | |
3180 | ||
3181 | /* | |
3182 | (defun renumber-ops () | |
3183 | "start from top of buffer and renumber 'VM_DEFINE_FOO (\n' sequences" | |
3184 | (interactive "") | |
3185 | (save-excursion | |
3186 | (let ((counter -1)) (goto-char (point-min)) | |
3187 | (while (re-search-forward "^ *VM_DEFINE_[^ ]+ (\\([^,]+\\)," (point-max) t) | |
3188 | (replace-match | |
3189 | (number-to-string (setq counter (1+ counter))) | |
3190 | t t nil 1))))) | |
3191 | (renumber-ops) | |
3192 | */ | |
17e90c5e KN |
3193 | /* |
3194 | Local Variables: | |
3195 | c-file-style: "gnu" | |
3196 | End: | |
3197 | */ |