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 | ||
6d14383e | 22 | #if (VM_ENGINE == SCM_VM_REGULAR_ENGINE) |
ff3968c2 | 23 | # define VM_USE_HOOKS 0 /* Various hooks */ |
6d14383e | 24 | #elif (VM_ENGINE == SCM_VM_DEBUG_ENGINE) |
ff3968c2 | 25 | # define VM_USE_HOOKS 1 |
6d14383e | 26 | #else |
ff3968c2 | 27 | # error unknown debug engine VM_ENGINE |
6d14383e | 28 | #endif |
a98cef7e | 29 | |
8dd6bfa7 AW |
30 | /* Assign some registers by hand. There used to be a bigger list here, |
31 | but it was never tested, and in the case of x86-32, was a source of | |
32 | compilation failures. It can be revived if it's useful, but my naive | |
33 | hope is that simply annotating the locals with "register" will be a | |
34 | sufficient hint to the compiler. */ | |
eac12024 | 35 | #ifdef __GNUC__ |
8dd6bfa7 | 36 | # if defined __x86_64__ |
eac12024 AW |
37 | /* GCC 4.6 chooses %rbp for IP_REG and %rbx for SP_REG, which works |
38 | well. Tell it to keep the jump table in a r12, which is | |
39 | callee-saved. */ | |
8dd6bfa7 AW |
40 | # define JT_REG asm ("r12") |
41 | # endif | |
eac12024 AW |
42 | #endif |
43 | ||
44 | #ifndef IP_REG | |
8dd6bfa7 | 45 | # define IP_REG |
eac12024 | 46 | #endif |
eac12024 | 47 | #ifndef FP_REG |
8dd6bfa7 | 48 | # define FP_REG |
eac12024 AW |
49 | #endif |
50 | #ifndef JT_REG | |
8dd6bfa7 | 51 | # define JT_REG |
eac12024 AW |
52 | #endif |
53 | ||
27c7c630 AW |
54 | #define VM_ASSERT(condition, handler) \ |
55 | do { \ | |
56 | if (SCM_UNLIKELY (!(condition))) \ | |
57 | { \ | |
58 | SYNC_ALL(); \ | |
59 | handler; \ | |
60 | } \ | |
61 | } while (0) | |
eac12024 AW |
62 | |
63 | #ifdef VM_ENABLE_ASSERTIONS | |
64 | # define ASSERT(condition) VM_ASSERT (condition, abort()) | |
65 | #else | |
66 | # define ASSERT(condition) | |
67 | #endif | |
68 | ||
c850a0ff AW |
69 | #if VM_USE_HOOKS |
70 | #define RUN_HOOK(h, args, n) \ | |
71 | do { \ | |
72 | if (SCM_UNLIKELY (vp->trace_level > 0)) \ | |
73 | { \ | |
74 | SYNC_REGISTER (); \ | |
75 | vm_dispatch_hook (vm, h, args, n); \ | |
76 | } \ | |
77 | } while (0) | |
78 | #else | |
79 | #define RUN_HOOK(h, args, n) | |
80 | #endif | |
81 | #define RUN_HOOK0(h) RUN_HOOK(h, NULL, 0) | |
82 | ||
83 | #define APPLY_HOOK() \ | |
84 | RUN_HOOK0 (SCM_VM_APPLY_HOOK) | |
85 | #define PUSH_CONTINUATION_HOOK() \ | |
86 | RUN_HOOK0 (SCM_VM_PUSH_CONTINUATION_HOOK) | |
b636cdb0 AW |
87 | #define POP_CONTINUATION_HOOK(old_fp) \ |
88 | RUN_HOOK (SCM_VM_POP_CONTINUATION_HOOK, \ | |
89 | &SCM_FRAME_LOCAL (old_fp, 1), \ | |
90 | SCM_FRAME_NUM_LOCALS (old_fp, vp->sp) - 1) | |
c850a0ff AW |
91 | #define NEXT_HOOK() \ |
92 | RUN_HOOK0 (SCM_VM_NEXT_HOOK) | |
b636cdb0 AW |
93 | #define ABORT_CONTINUATION_HOOK() \ |
94 | RUN_HOOK (SCM_VM_ABORT_CONTINUATION_HOOK, \ | |
95 | LOCAL_ADDRESS (1), \ | |
96 | FRAME_LOCALS_COUNT () - 1) | |
c850a0ff AW |
97 | #define RESTORE_CONTINUATION_HOOK() \ |
98 | RUN_HOOK0 (SCM_VM_RESTORE_CONTINUATION_HOOK) | |
99 | ||
100 | #define VM_HANDLE_INTERRUPTS \ | |
101 | SCM_ASYNC_TICK_WITH_CODE (current_thread, SYNC_REGISTER ()) | |
102 | ||
103 | ||
510ca126 AW |
104 | /* Virtual Machine |
105 | ||
106 | This is Guile's new virtual machine. When I say "new", I mean | |
107 | relative to the current virtual machine. At some point it will | |
108 | become "the" virtual machine, and we'll delete this paragraph. As | |
109 | such, the rest of the comments speak as if there's only one VM. | |
7396d216 AW |
110 | In difference from the old VM, local 0 is the procedure, and the |
111 | first argument is local 1. At some point in the future we should | |
112 | change the fp to point to the procedure and not to local 1. | |
510ca126 AW |
113 | |
114 | <more overview here> | |
115 | */ | |
116 | ||
117 | ||
118 | /* The VM has three state bits: the instruction pointer (IP), the frame | |
119 | pointer (FP), and the top-of-stack pointer (SP). We cache the first | |
120 | two of these in machine registers, local to the VM, because they are | |
121 | used extensively by the VM. As the SP is used more by code outside | |
122 | the VM than by the VM itself, we don't bother caching it locally. | |
123 | ||
124 | Since the FP changes infrequently, relative to the IP, we keep vp->fp | |
125 | in sync with the local FP. This would be a big lose for the IP, | |
126 | though, so instead of updating vp->ip all the time, we call SYNC_IP | |
127 | whenever we would need to know the IP of the top frame. In practice, | |
128 | we need to SYNC_IP whenever we call out of the VM to a function that | |
129 | would like to walk the stack, perhaps as the result of an | |
130 | exception. */ | |
131 | ||
132 | #define SYNC_IP() \ | |
9121d9f1 | 133 | vp->ip = (ip) |
510ca126 AW |
134 | |
135 | #define SYNC_REGISTER() \ | |
136 | SYNC_IP() | |
137 | #define SYNC_BEFORE_GC() /* Only SP and FP needed to trace GC */ | |
138 | #define SYNC_ALL() /* FP already saved */ \ | |
139 | SYNC_IP() | |
140 | ||
141 | #define CHECK_OVERFLOW(sp) \ | |
142 | do { \ | |
143 | if (SCM_UNLIKELY ((sp) >= stack_limit)) \ | |
144 | vm_error_stack_overflow (vp); \ | |
145 | } while (0) | |
146 | ||
147 | /* Reserve stack space for a frame. Will check that there is sufficient | |
b636cdb0 AW |
148 | stack space for N locals, including the procedure. Invoke after |
149 | preparing the new frame and setting the fp and ip. */ | |
510ca126 AW |
150 | #define ALLOC_FRAME(n) \ |
151 | do { \ | |
b636cdb0 AW |
152 | SCM *new_sp = vp->sp = LOCAL_ADDRESS (n - 1); \ |
153 | CHECK_OVERFLOW (new_sp); \ | |
510ca126 AW |
154 | } while (0) |
155 | ||
156 | /* Reset the current frame to hold N locals. Used when we know that no | |
157 | stack expansion is needed. */ | |
158 | #define RESET_FRAME(n) \ | |
159 | do { \ | |
b636cdb0 | 160 | vp->sp = LOCAL_ADDRESS (n - 1); \ |
510ca126 AW |
161 | } while (0) |
162 | ||
b636cdb0 AW |
163 | /* Compute the number of locals in the frame. At a call, this is equal |
164 | to the number of actual arguments when a function is first called, | |
165 | plus one for the function. */ | |
166 | #define FRAME_LOCALS_COUNT_FROM(slot) \ | |
167 | (vp->sp + 1 - LOCAL_ADDRESS (slot)) | |
168 | #define FRAME_LOCALS_COUNT() \ | |
169 | FRAME_LOCALS_COUNT_FROM (0) | |
510ca126 AW |
170 | |
171 | /* Restore registers after returning from a frame. */ | |
172 | #define RESTORE_FRAME() \ | |
173 | do { \ | |
174 | } while (0) | |
175 | ||
176 | ||
177 | #define CACHE_REGISTER() \ | |
178 | do { \ | |
179 | ip = (scm_t_uint32 *) vp->ip; \ | |
180 | fp = vp->fp; \ | |
181 | } while (0) | |
182 | ||
183 | #ifdef HAVE_LABELS_AS_VALUES | |
184 | # define BEGIN_DISPATCH_SWITCH /* */ | |
185 | # define END_DISPATCH_SWITCH /* */ | |
186 | # define NEXT(n) \ | |
187 | do \ | |
188 | { \ | |
189 | ip += n; \ | |
190 | NEXT_HOOK (); \ | |
191 | op = *ip; \ | |
192 | goto *jump_table[op & 0xff]; \ | |
193 | } \ | |
194 | while (0) | |
195 | # define VM_DEFINE_OP(opcode, tag, name, meta) \ | |
196 | op_##tag: | |
197 | #else | |
198 | # define BEGIN_DISPATCH_SWITCH \ | |
199 | vm_start: \ | |
200 | NEXT_HOOK (); \ | |
201 | op = *ip; \ | |
202 | switch (op & 0xff) \ | |
203 | { | |
204 | # define END_DISPATCH_SWITCH \ | |
205 | default: \ | |
206 | goto vm_error_bad_instruction; \ | |
207 | } | |
208 | # define NEXT(n) \ | |
209 | do \ | |
210 | { \ | |
211 | ip += n; \ | |
212 | goto vm_start; \ | |
213 | } \ | |
214 | while (0) | |
215 | # define VM_DEFINE_OP(opcode, tag, name, meta) \ | |
216 | op_##tag: \ | |
217 | case opcode: | |
218 | #endif | |
219 | ||
b636cdb0 AW |
220 | #define LOCAL_ADDRESS(i) (&SCM_FRAME_LOCAL (fp, i)) |
221 | #define LOCAL_REF(i) SCM_FRAME_LOCAL (fp, i) | |
222 | #define LOCAL_SET(i,o) SCM_FRAME_LOCAL (fp, i) = o | |
510ca126 AW |
223 | |
224 | #define VARIABLE_REF(v) SCM_VARIABLE_REF (v) | |
225 | #define VARIABLE_SET(v,o) SCM_VARIABLE_SET (v, o) | |
226 | #define VARIABLE_BOUNDP(v) (!scm_is_eq (VARIABLE_REF (v), SCM_UNDEFINED)) | |
510ca126 AW |
227 | |
228 | #define RETURN_ONE_VALUE(ret) \ | |
229 | do { \ | |
230 | SCM val = ret; \ | |
b636cdb0 | 231 | SCM *old_fp = fp; \ |
510ca126 | 232 | VM_HANDLE_INTERRUPTS; \ |
9121d9f1 | 233 | ip = SCM_FRAME_RETURN_ADDRESS (fp); \ |
510ca126 | 234 | fp = vp->fp = SCM_FRAME_DYNAMIC_LINK (fp); \ |
af95414f | 235 | /* Clear frame. */ \ |
b636cdb0 AW |
236 | old_fp[-1] = SCM_BOOL_F; \ |
237 | old_fp[-2] = SCM_BOOL_F; \ | |
af95414f | 238 | /* Leave proc. */ \ |
b636cdb0 AW |
239 | SCM_FRAME_LOCAL (old_fp, 1) = val; \ |
240 | vp->sp = &SCM_FRAME_LOCAL (old_fp, 1); \ | |
241 | POP_CONTINUATION_HOOK (old_fp); \ | |
510ca126 AW |
242 | NEXT (0); \ |
243 | } while (0) | |
244 | ||
245 | /* While we could generate the list-unrolling code here, it's fine for | |
246 | now to just tail-call (apply values vals). */ | |
247 | #define RETURN_VALUE_LIST(vals_) \ | |
248 | do { \ | |
249 | SCM vals = vals_; \ | |
250 | VM_HANDLE_INTERRUPTS; \ | |
b636cdb0 AW |
251 | fp[0] = vm_builtin_apply; \ |
252 | fp[1] = vm_builtin_values; \ | |
253 | fp[2] = vals; \ | |
7396d216 | 254 | RESET_FRAME (3); \ |
486013d6 | 255 | ip = (scm_t_uint32 *) vm_builtin_apply_code; \ |
adb8d905 | 256 | goto op_tail_apply; \ |
510ca126 AW |
257 | } while (0) |
258 | ||
259 | #define BR_NARGS(rel) \ | |
d2bd8fa8 | 260 | scm_t_uint32 expected; \ |
510ca126 AW |
261 | SCM_UNPACK_RTL_24 (op, expected); \ |
262 | if (FRAME_LOCALS_COUNT() rel expected) \ | |
263 | { \ | |
264 | scm_t_int32 offset = ip[1]; \ | |
265 | offset >>= 8; /* Sign-extending shift. */ \ | |
266 | NEXT (offset); \ | |
267 | } \ | |
268 | NEXT (2) | |
269 | ||
270 | #define BR_UNARY(x, exp) \ | |
271 | scm_t_uint32 test; \ | |
272 | SCM x; \ | |
273 | SCM_UNPACK_RTL_24 (op, test); \ | |
274 | x = LOCAL_REF (test); \ | |
275 | if ((ip[1] & 0x1) ? !(exp) : (exp)) \ | |
276 | { \ | |
277 | scm_t_int32 offset = ip[1]; \ | |
278 | offset >>= 8; /* Sign-extending shift. */ \ | |
279 | if (offset < 0) \ | |
280 | VM_HANDLE_INTERRUPTS; \ | |
281 | NEXT (offset); \ | |
282 | } \ | |
283 | NEXT (2) | |
284 | ||
285 | #define BR_BINARY(x, y, exp) \ | |
286 | scm_t_uint16 a, b; \ | |
287 | SCM x, y; \ | |
288 | SCM_UNPACK_RTL_12_12 (op, a, b); \ | |
289 | x = LOCAL_REF (a); \ | |
290 | y = LOCAL_REF (b); \ | |
291 | if ((ip[1] & 0x1) ? !(exp) : (exp)) \ | |
292 | { \ | |
293 | scm_t_int32 offset = ip[1]; \ | |
294 | offset >>= 8; /* Sign-extending shift. */ \ | |
295 | if (offset < 0) \ | |
296 | VM_HANDLE_INTERRUPTS; \ | |
297 | NEXT (offset); \ | |
298 | } \ | |
299 | NEXT (2) | |
300 | ||
301 | #define BR_ARITHMETIC(crel,srel) \ | |
302 | { \ | |
303 | scm_t_uint16 a, b; \ | |
304 | SCM x, y; \ | |
305 | SCM_UNPACK_RTL_12_12 (op, a, b); \ | |
306 | x = LOCAL_REF (a); \ | |
307 | y = LOCAL_REF (b); \ | |
308 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) \ | |
309 | { \ | |
310 | scm_t_signed_bits x_bits = SCM_UNPACK (x); \ | |
311 | scm_t_signed_bits y_bits = SCM_UNPACK (y); \ | |
af95414f | 312 | if ((ip[1] & 0x1) ? !(x_bits crel y_bits) : (x_bits crel y_bits)) \ |
510ca126 AW |
313 | { \ |
314 | scm_t_int32 offset = ip[1]; \ | |
315 | offset >>= 8; /* Sign-extending shift. */ \ | |
316 | if (offset < 0) \ | |
317 | VM_HANDLE_INTERRUPTS; \ | |
318 | NEXT (offset); \ | |
319 | } \ | |
320 | NEXT (2); \ | |
321 | } \ | |
322 | else \ | |
323 | { \ | |
af95414f | 324 | SCM res; \ |
510ca126 | 325 | SYNC_IP (); \ |
af95414f AW |
326 | res = srel (x, y); \ |
327 | if ((ip[1] & 0x1) ? scm_is_false (res) : scm_is_true (res)) \ | |
510ca126 AW |
328 | { \ |
329 | scm_t_int32 offset = ip[1]; \ | |
330 | offset >>= 8; /* Sign-extending shift. */ \ | |
331 | if (offset < 0) \ | |
332 | VM_HANDLE_INTERRUPTS; \ | |
333 | NEXT (offset); \ | |
334 | } \ | |
335 | NEXT (2); \ | |
336 | } \ | |
337 | } | |
338 | ||
339 | #define ARGS1(a1) \ | |
340 | scm_t_uint16 dst, src; \ | |
341 | SCM a1; \ | |
342 | SCM_UNPACK_RTL_12_12 (op, dst, src); \ | |
343 | a1 = LOCAL_REF (src) | |
344 | #define ARGS2(a1, a2) \ | |
345 | scm_t_uint8 dst, src1, src2; \ | |
346 | SCM a1, a2; \ | |
347 | SCM_UNPACK_RTL_8_8_8 (op, dst, src1, src2); \ | |
348 | a1 = LOCAL_REF (src1); \ | |
349 | a2 = LOCAL_REF (src2) | |
350 | #define RETURN(x) \ | |
351 | do { LOCAL_SET (dst, x); NEXT (1); } while (0) | |
352 | ||
353 | /* The maximum/minimum tagged integers. */ | |
d2295ba5 MW |
354 | #define INUM_MAX \ |
355 | ((scm_t_signed_bits) SCM_UNPACK (SCM_I_MAKINUM (SCM_MOST_POSITIVE_FIXNUM))) | |
356 | #define INUM_MIN \ | |
357 | ((scm_t_signed_bits) SCM_UNPACK (SCM_I_MAKINUM (SCM_MOST_NEGATIVE_FIXNUM))) | |
358 | #define INUM_STEP \ | |
359 | ((scm_t_signed_bits) SCM_UNPACK (SCM_INUM1) \ | |
360 | - (scm_t_signed_bits) SCM_UNPACK (SCM_INUM0)) | |
510ca126 AW |
361 | |
362 | #define BINARY_INTEGER_OP(CFUNC,SFUNC) \ | |
363 | { \ | |
364 | ARGS2 (x, y); \ | |
365 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) \ | |
366 | { \ | |
367 | scm_t_int64 n = SCM_I_INUM (x) CFUNC SCM_I_INUM (y); \ | |
368 | if (SCM_FIXABLE (n)) \ | |
369 | RETURN (SCM_I_MAKINUM (n)); \ | |
370 | } \ | |
371 | SYNC_IP (); \ | |
372 | RETURN (SFUNC (x, y)); \ | |
373 | } | |
374 | ||
375 | #define VM_VALIDATE_PAIR(x, proc) \ | |
376 | VM_ASSERT (scm_is_pair (x), vm_error_not_a_pair (proc, x)) | |
377 | ||
378 | #define VM_VALIDATE_STRUCT(obj, proc) \ | |
379 | VM_ASSERT (SCM_STRUCTP (obj), vm_error_not_a_pair (proc, obj)) | |
380 | ||
381 | #define VM_VALIDATE_BYTEVECTOR(x, proc) \ | |
382 | VM_ASSERT (SCM_BYTEVECTOR_P (x), vm_error_not_a_bytevector (proc, x)) | |
383 | ||
384 | /* Return true (non-zero) if PTR has suitable alignment for TYPE. */ | |
385 | #define ALIGNED_P(ptr, type) \ | |
386 | ((scm_t_uintptr) (ptr) % alignof_type (type) == 0) | |
387 | ||
388 | static SCM | |
389 | RTL_VM_NAME (SCM vm, SCM program, SCM *argv, size_t nargs_) | |
390 | { | |
391 | /* Instruction pointer: A pointer to the opcode that is currently | |
392 | running. */ | |
393 | register scm_t_uint32 *ip IP_REG; | |
394 | ||
395 | /* Frame pointer: A pointer into the stack, off of which we index | |
396 | arguments and local variables. Pushed at function calls, popped on | |
397 | returns. */ | |
398 | register SCM *fp FP_REG; | |
399 | ||
400 | /* Current opcode: A cache of *ip. */ | |
401 | register scm_t_uint32 op; | |
402 | ||
403 | /* Cached variables. */ | |
404 | struct scm_vm *vp = SCM_VM_DATA (vm); | |
405 | SCM *stack_limit = vp->stack_limit; /* stack limit address */ | |
406 | scm_i_thread *current_thread = SCM_I_CURRENT_THREAD; | |
407 | scm_i_jmp_buf registers; /* used for prompts */ | |
408 | ||
409 | #ifdef HAVE_LABELS_AS_VALUES | |
410 | static const void **jump_table_pointer = NULL; | |
411 | register const void **jump_table JT_REG; | |
412 | ||
413 | if (SCM_UNLIKELY (!jump_table_pointer)) | |
414 | { | |
415 | int i; | |
416 | jump_table_pointer = malloc (SCM_VM_NUM_INSTRUCTIONS * sizeof (void*)); | |
417 | for (i = 0; i < SCM_VM_NUM_INSTRUCTIONS; i++) | |
418 | jump_table_pointer[i] = &&vm_error_bad_instruction; | |
419 | #define INIT(opcode, tag, name, meta) jump_table_pointer[opcode] = &&op_##tag; | |
420 | FOR_EACH_VM_OPERATION(INIT); | |
421 | #undef INIT | |
422 | } | |
423 | ||
424 | /* Attempt to keep JUMP_TABLE_POINTER in a register. This saves one | |
425 | load instruction at each instruction dispatch. */ | |
426 | jump_table = jump_table_pointer; | |
427 | #endif | |
428 | ||
429 | if (SCM_I_SETJMP (registers)) | |
430 | { | |
431 | /* Non-local return. The values are on the stack, on a new frame | |
432 | set up to call `values' to return the values to the handler. | |
433 | Cache the VM registers back from the vp, and dispatch to the | |
434 | body of `values'. | |
435 | ||
436 | Note, at this point, we must assume that any variable local to | |
437 | vm_engine that can be assigned *has* been assigned. So we need | |
438 | to pull all our state back from the ip/fp/sp. | |
439 | */ | |
440 | CACHE_REGISTER (); | |
b636cdb0 | 441 | ABORT_CONTINUATION_HOOK (); |
510ca126 AW |
442 | NEXT (0); |
443 | } | |
444 | ||
445 | /* Load previous VM registers. */ | |
446 | CACHE_REGISTER (); | |
447 | ||
448 | VM_HANDLE_INTERRUPTS; | |
449 | ||
450 | /* Initialization */ | |
451 | { | |
452 | SCM *base; | |
453 | ||
f8085163 AW |
454 | /* Check that we have enough space: 3 words for the boot |
455 | continuation, 3 + nargs for the procedure application, and 3 for | |
510ca126 AW |
456 | setting up a new frame. */ |
457 | base = vp->sp + 1; | |
f8085163 | 458 | CHECK_OVERFLOW (vp->sp + 3 + 3 + nargs_ + 3); |
510ca126 AW |
459 | |
460 | /* Since it's possible to receive the arguments on the stack itself, | |
461 | and indeed the regular VM invokes us that way, shuffle up the | |
462 | arguments first. */ | |
463 | { | |
464 | int i; | |
465 | for (i = nargs_ - 1; i >= 0; i--) | |
f8085163 | 466 | base[6 + i] = argv[i]; |
510ca126 AW |
467 | } |
468 | ||
469 | /* Initial frame, saving previous fp and ip, with the boot | |
470 | continuation. */ | |
471 | base[0] = SCM_PACK (fp); /* dynamic link */ | |
f8085163 | 472 | base[1] = SCM_PACK (ip); /* ra */ |
ef6b7f71 | 473 | base[2] = vm_boot_continuation; |
b636cdb0 | 474 | fp = &base[2]; |
ef6b7f71 | 475 | ip = (scm_t_uint32 *) vm_boot_continuation_code; |
510ca126 AW |
476 | |
477 | /* MV-call frame, function & arguments */ | |
f8085163 AW |
478 | base[3] = SCM_PACK (fp); /* dynamic link */ |
479 | base[4] = SCM_PACK (ip); /* ra */ | |
480 | base[5] = program; | |
b636cdb0 | 481 | fp = vp->fp = &base[5]; |
7396d216 | 482 | RESET_FRAME (nargs_ + 1); |
510ca126 AW |
483 | } |
484 | ||
485 | apply: | |
d798a895 | 486 | while (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp))) |
510ca126 | 487 | { |
510ca126 AW |
488 | SCM proc = SCM_FRAME_PROGRAM (fp); |
489 | ||
490 | if (SCM_STRUCTP (proc) && SCM_STRUCT_APPLICABLE_P (proc)) | |
491 | { | |
b636cdb0 | 492 | LOCAL_SET (0, SCM_STRUCT_PROCEDURE (proc)); |
510ca126 AW |
493 | continue; |
494 | } | |
495 | if (SCM_HAS_TYP7 (proc, scm_tc7_smob) && SCM_SMOB_APPLICABLE_P (proc)) | |
496 | { | |
497 | scm_t_uint32 n = FRAME_LOCALS_COUNT(); | |
498 | ||
9d87158f AW |
499 | /* Shuffle args up. */ |
500 | RESET_FRAME (n + 1); | |
510ca126 AW |
501 | while (n--) |
502 | LOCAL_SET (n + 1, LOCAL_REF (n)); | |
510ca126 | 503 | |
9d87158f | 504 | LOCAL_SET (0, SCM_SMOB_DESCRIPTOR (proc).apply_trampoline); |
510ca126 AW |
505 | continue; |
506 | } | |
507 | ||
508 | SYNC_IP(); | |
509 | vm_error_wrong_type_apply (proc); | |
510ca126 AW |
510 | } |
511 | ||
512 | /* Let's go! */ | |
d798a895 | 513 | ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); |
510ca126 AW |
514 | NEXT (0); |
515 | ||
516 | BEGIN_DISPATCH_SWITCH; | |
517 | ||
518 | ||
519 | \f | |
520 | ||
521 | /* | |
522 | * Call and return | |
523 | */ | |
524 | ||
525 | /* halt _:24 | |
526 | * | |
af95414f | 527 | * Bring the VM to a halt, returning all the values from the stack. |
510ca126 AW |
528 | */ |
529 | VM_DEFINE_OP (0, halt, "halt", OP1 (U8_X24)) | |
530 | { | |
f8085163 | 531 | /* Boot closure in r0, empty frame in r1/r2, proc in r3, values from r4. */ |
510ca126 | 532 | |
b636cdb0 AW |
533 | scm_t_uint32 nvals = FRAME_LOCALS_COUNT_FROM (4); |
534 | SCM ret; | |
535 | ||
af95414f | 536 | if (nvals == 1) |
f8085163 | 537 | ret = LOCAL_REF (4); |
af95414f AW |
538 | else |
539 | { | |
540 | scm_t_uint32 n; | |
541 | ret = SCM_EOL; | |
542 | SYNC_BEFORE_GC(); | |
543 | for (n = nvals; n > 0; n--) | |
f8085163 | 544 | ret = scm_cons (LOCAL_REF (4 + n - 1), ret); |
af95414f AW |
545 | ret = scm_values (ret); |
546 | } | |
510ca126 AW |
547 | |
548 | vp->ip = SCM_FRAME_RETURN_ADDRESS (fp); | |
b636cdb0 | 549 | vp->sp = SCM_FRAME_PREVIOUS_SP (fp); |
510ca126 AW |
550 | vp->fp = SCM_FRAME_DYNAMIC_LINK (fp); |
551 | ||
af95414f | 552 | return ret; |
286a0fb3 AW |
553 | } |
554 | ||
af95414f | 555 | /* call proc:24 _:8 nlocals:24 |
286a0fb3 | 556 | * |
af95414f AW |
557 | * Call a procedure. PROC is the local corresponding to a procedure. |
558 | * The three values below PROC will be overwritten by the saved call | |
559 | * frame data. The new frame will have space for NLOCALS locals: one | |
560 | * for the procedure, and the rest for the arguments which should | |
561 | * already have been pushed on. | |
510ca126 | 562 | * |
af95414f AW |
563 | * When the call returns, execution proceeds with the next |
564 | * instruction. There may be any number of values on the return | |
565 | * stack; the precise number can be had by subtracting the address of | |
566 | * PROC from the post-call SP. | |
510ca126 | 567 | */ |
af95414f | 568 | VM_DEFINE_OP (1, call, "call", OP2 (U8_U24, X8_U24)) |
510ca126 | 569 | { |
af95414f | 570 | scm_t_uint32 proc, nlocals; |
510ca126 AW |
571 | SCM *old_fp = fp; |
572 | ||
af95414f AW |
573 | SCM_UNPACK_RTL_24 (op, proc); |
574 | SCM_UNPACK_RTL_24 (ip[1], nlocals); | |
510ca126 AW |
575 | |
576 | VM_HANDLE_INTERRUPTS; | |
577 | ||
af95414f | 578 | fp = vp->fp = old_fp + proc; |
510ca126 | 579 | SCM_FRAME_SET_DYNAMIC_LINK (fp, old_fp); |
9121d9f1 | 580 | SCM_FRAME_SET_RETURN_ADDRESS (fp, ip + 2); |
510ca126 | 581 | |
af95414f AW |
582 | RESET_FRAME (nlocals); |
583 | ||
510ca126 AW |
584 | PUSH_CONTINUATION_HOOK (); |
585 | APPLY_HOOK (); | |
586 | ||
d798a895 | 587 | if (SCM_UNLIKELY (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp)))) |
510ca126 AW |
588 | goto apply; |
589 | ||
d798a895 | 590 | ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); |
510ca126 AW |
591 | NEXT (0); |
592 | } | |
593 | ||
af95414f | 594 | /* tail-call nlocals:24 |
510ca126 | 595 | * |
af95414f | 596 | * Tail-call a procedure. Requires that the procedure and all of the |
486013d6 AW |
597 | * arguments have already been shuffled into position. Will reset the |
598 | * frame to NLOCALS. | |
510ca126 | 599 | */ |
af95414f | 600 | VM_DEFINE_OP (2, tail_call, "tail-call", OP1 (U8_U24)) |
510ca126 | 601 | { |
af95414f AW |
602 | scm_t_uint32 nlocals; |
603 | ||
604 | SCM_UNPACK_RTL_24 (op, nlocals); | |
510ca126 AW |
605 | |
606 | VM_HANDLE_INTERRUPTS; | |
607 | ||
af95414f | 608 | RESET_FRAME (nlocals); |
486013d6 AW |
609 | |
610 | APPLY_HOOK (); | |
611 | ||
d798a895 | 612 | if (SCM_UNLIKELY (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp)))) |
486013d6 AW |
613 | goto apply; |
614 | ||
d798a895 | 615 | ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); |
486013d6 AW |
616 | NEXT (0); |
617 | } | |
618 | ||
619 | /* tail-call/shuffle from:24 | |
620 | * | |
621 | * Tail-call a procedure. The procedure should already be set to slot | |
622 | * 0. The rest of the args are taken from the frame, starting at | |
623 | * FROM, shuffled down to start at slot 0. This is part of the | |
624 | * implementation of the call-with-values builtin. | |
625 | */ | |
626 | VM_DEFINE_OP (3, tail_call_shuffle, "tail-call/shuffle", OP1 (U8_U24)) | |
627 | { | |
628 | scm_t_uint32 n, from, nlocals; | |
629 | ||
630 | SCM_UNPACK_RTL_24 (op, from); | |
631 | ||
632 | VM_HANDLE_INTERRUPTS; | |
633 | ||
634 | VM_ASSERT (from > 0, abort ()); | |
635 | nlocals = FRAME_LOCALS_COUNT (); | |
636 | ||
637 | for (n = 0; from + n < nlocals; n++) | |
638 | LOCAL_SET (n + 1, LOCAL_REF (from + n)); | |
639 | ||
640 | RESET_FRAME (n + 1); | |
641 | ||
510ca126 AW |
642 | APPLY_HOOK (); |
643 | ||
d798a895 | 644 | if (SCM_UNLIKELY (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp)))) |
510ca126 AW |
645 | goto apply; |
646 | ||
d798a895 | 647 | ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); |
510ca126 AW |
648 | NEXT (0); |
649 | } | |
650 | ||
af95414f | 651 | /* receive dst:12 proc:12 _:8 nlocals:24 |
510ca126 | 652 | * |
af95414f AW |
653 | * Receive a single return value from a call whose procedure was in |
654 | * PROC, asserting that the call actually returned at least one | |
655 | * value. Afterwards, resets the frame to NLOCALS locals. | |
510ca126 | 656 | */ |
486013d6 | 657 | VM_DEFINE_OP (4, receive, "receive", OP2 (U8_U12_U12, X8_U24) | OP_DST) |
510ca126 | 658 | { |
af95414f AW |
659 | scm_t_uint16 dst, proc; |
660 | scm_t_uint32 nlocals; | |
661 | SCM_UNPACK_RTL_12_12 (op, dst, proc); | |
662 | SCM_UNPACK_RTL_24 (ip[1], nlocals); | |
663 | VM_ASSERT (FRAME_LOCALS_COUNT () > proc + 1, vm_error_no_values ()); | |
664 | LOCAL_SET (dst, LOCAL_REF (proc + 1)); | |
665 | RESET_FRAME (nlocals); | |
666 | NEXT (2); | |
667 | } | |
510ca126 | 668 | |
82f4bac4 | 669 | /* receive-values proc:24 allow-extra?:1 _:7 nvalues:24 |
af95414f AW |
670 | * |
671 | * Receive a return of multiple values from a call whose procedure was | |
672 | * in PROC. If fewer than NVALUES values were returned, signal an | |
82f4bac4 AW |
673 | * error. Unless ALLOW-EXTRA? is true, require that the number of |
674 | * return values equals NVALUES exactly. After receive-values has | |
675 | * run, the values can be copied down via `mov'. | |
af95414f | 676 | */ |
486013d6 | 677 | VM_DEFINE_OP (5, receive_values, "receive-values", OP2 (U8_U24, B1_X7_U24)) |
af95414f AW |
678 | { |
679 | scm_t_uint32 proc, nvalues; | |
680 | SCM_UNPACK_RTL_24 (op, proc); | |
681 | SCM_UNPACK_RTL_24 (ip[1], nvalues); | |
82f4bac4 AW |
682 | if (ip[1] & 0x1) |
683 | VM_ASSERT (FRAME_LOCALS_COUNT () > proc + nvalues, | |
684 | vm_error_not_enough_values ()); | |
685 | else | |
186b56c4 | 686 | VM_ASSERT (FRAME_LOCALS_COUNT () == proc + 1 + nvalues, |
82f4bac4 | 687 | vm_error_wrong_number_of_values (nvalues)); |
af95414f | 688 | NEXT (2); |
510ca126 AW |
689 | } |
690 | ||
691 | /* return src:24 | |
692 | * | |
693 | * Return a value. | |
694 | */ | |
486013d6 | 695 | VM_DEFINE_OP (6, return, "return", OP1 (U8_U24)) |
510ca126 AW |
696 | { |
697 | scm_t_uint32 src; | |
698 | SCM_UNPACK_RTL_24 (op, src); | |
699 | RETURN_ONE_VALUE (LOCAL_REF (src)); | |
700 | } | |
701 | ||
84cc4127 | 702 | /* return-values _:24 |
510ca126 AW |
703 | * |
704 | * Return a number of values from a call frame. This opcode | |
705 | * corresponds to an application of `values' in tail position. As | |
af95414f AW |
706 | * with tail calls, we expect that the values have already been |
707 | * shuffled down to a contiguous array starting at slot 1. | |
84cc4127 | 708 | * We also expect the frame has already been reset. |
510ca126 | 709 | */ |
486013d6 | 710 | VM_DEFINE_OP (7, return_values, "return-values", OP1 (U8_X24)) |
510ca126 | 711 | { |
b636cdb0 | 712 | SCM *old_fp = fp; |
af95414f | 713 | |
af95414f | 714 | VM_HANDLE_INTERRUPTS; |
9121d9f1 | 715 | ip = SCM_FRAME_RETURN_ADDRESS (fp); |
af95414f AW |
716 | fp = vp->fp = SCM_FRAME_DYNAMIC_LINK (fp); |
717 | ||
718 | /* Clear stack frame. */ | |
b636cdb0 AW |
719 | old_fp[-1] = SCM_BOOL_F; |
720 | old_fp[-2] = SCM_BOOL_F; | |
af95414f | 721 | |
b636cdb0 | 722 | POP_CONTINUATION_HOOK (old_fp); |
af95414f AW |
723 | |
724 | NEXT (0); | |
510ca126 AW |
725 | } |
726 | ||
727 | ||
728 | \f | |
729 | ||
730 | /* | |
731 | * Specialized call stubs | |
732 | */ | |
733 | ||
734 | /* subr-call ptr-idx:24 | |
735 | * | |
736 | * Call a subr, passing all locals in this frame as arguments. Fetch | |
737 | * the foreign pointer from PTR-IDX, a free variable. Return from the | |
738 | * calling frame. This instruction is part of the trampolines | |
739 | * created in gsubr.c, and is not generated by the compiler. | |
740 | */ | |
486013d6 | 741 | VM_DEFINE_OP (8, subr_call, "subr-call", OP1 (U8_U24)) |
510ca126 AW |
742 | { |
743 | scm_t_uint32 ptr_idx; | |
744 | SCM pointer, ret; | |
745 | SCM (*subr)(); | |
746 | ||
747 | SCM_UNPACK_RTL_24 (op, ptr_idx); | |
748 | ||
d798a895 | 749 | pointer = SCM_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (0), ptr_idx); |
510ca126 AW |
750 | subr = SCM_POINTER_VALUE (pointer); |
751 | ||
752 | VM_HANDLE_INTERRUPTS; | |
753 | SYNC_IP (); | |
754 | ||
b636cdb0 | 755 | switch (FRAME_LOCALS_COUNT_FROM (1)) |
510ca126 AW |
756 | { |
757 | case 0: | |
758 | ret = subr (); | |
759 | break; | |
760 | case 1: | |
b636cdb0 | 761 | ret = subr (fp[1]); |
510ca126 AW |
762 | break; |
763 | case 2: | |
b636cdb0 | 764 | ret = subr (fp[1], fp[2]); |
510ca126 AW |
765 | break; |
766 | case 3: | |
b636cdb0 | 767 | ret = subr (fp[1], fp[2], fp[3]); |
510ca126 AW |
768 | break; |
769 | case 4: | |
b636cdb0 | 770 | ret = subr (fp[1], fp[2], fp[3], fp[4]); |
510ca126 AW |
771 | break; |
772 | case 5: | |
b636cdb0 | 773 | ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5]); |
510ca126 AW |
774 | break; |
775 | case 6: | |
b636cdb0 | 776 | ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5], fp[6]); |
510ca126 AW |
777 | break; |
778 | case 7: | |
b636cdb0 | 779 | ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5], fp[6], fp[7]); |
510ca126 AW |
780 | break; |
781 | case 8: | |
b636cdb0 | 782 | ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5], fp[6], fp[7], fp[8]); |
510ca126 AW |
783 | break; |
784 | case 9: | |
b636cdb0 | 785 | ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5], fp[6], fp[7], fp[8], fp[9]); |
510ca126 AW |
786 | break; |
787 | case 10: | |
b636cdb0 | 788 | ret = subr (fp[1], fp[2], fp[3], fp[4], fp[5], fp[6], fp[7], fp[8], fp[9], fp[10]); |
510ca126 AW |
789 | break; |
790 | default: | |
791 | abort (); | |
792 | } | |
793 | ||
794 | // NULLSTACK_FOR_NONLOCAL_EXIT (); | |
795 | ||
796 | if (SCM_UNLIKELY (SCM_VALUESP (ret))) | |
797 | /* multiple values returned to continuation */ | |
798 | RETURN_VALUE_LIST (scm_struct_ref (ret, SCM_INUM0)); | |
799 | else | |
800 | RETURN_ONE_VALUE (ret); | |
801 | } | |
802 | ||
803 | /* foreign-call cif-idx:12 ptr-idx:12 | |
804 | * | |
805 | * Call a foreign function. Fetch the CIF and foreign pointer from | |
806 | * CIF-IDX and PTR-IDX, both free variables. Return from the calling | |
807 | * frame. Arguments are taken from the stack. This instruction is | |
808 | * part of the trampolines created by the FFI, and is not generated by | |
809 | * the compiler. | |
810 | */ | |
486013d6 | 811 | VM_DEFINE_OP (9, foreign_call, "foreign-call", OP1 (U8_U12_U12)) |
510ca126 AW |
812 | { |
813 | scm_t_uint16 cif_idx, ptr_idx; | |
7396d216 | 814 | SCM closure, cif, pointer, ret; |
510ca126 AW |
815 | |
816 | SCM_UNPACK_RTL_12_12 (op, cif_idx, ptr_idx); | |
817 | ||
7396d216 | 818 | closure = LOCAL_REF (0); |
d798a895 AW |
819 | cif = SCM_PROGRAM_FREE_VARIABLE_REF (closure, cif_idx); |
820 | pointer = SCM_PROGRAM_FREE_VARIABLE_REF (closure, ptr_idx); | |
510ca126 AW |
821 | |
822 | SYNC_IP (); | |
823 | VM_HANDLE_INTERRUPTS; | |
824 | ||
825 | // FIXME: separate args | |
b636cdb0 | 826 | ret = scm_i_foreign_call (scm_cons (cif, pointer), LOCAL_ADDRESS (1)); |
510ca126 AW |
827 | |
828 | // NULLSTACK_FOR_NONLOCAL_EXIT (); | |
829 | ||
830 | if (SCM_UNLIKELY (SCM_VALUESP (ret))) | |
831 | /* multiple values returned to continuation */ | |
832 | RETURN_VALUE_LIST (scm_struct_ref (ret, SCM_INUM0)); | |
833 | else | |
834 | RETURN_ONE_VALUE (ret); | |
835 | } | |
836 | ||
837 | /* continuation-call contregs:24 | |
838 | * | |
839 | * Return to a continuation, nonlocally. The arguments to the | |
840 | * continuation are taken from the stack. CONTREGS is a free variable | |
841 | * containing the reified continuation. This instruction is part of | |
842 | * the implementation of undelimited continuations, and is not | |
843 | * generated by the compiler. | |
844 | */ | |
486013d6 | 845 | VM_DEFINE_OP (10, continuation_call, "continuation-call", OP1 (U8_U24)) |
510ca126 AW |
846 | { |
847 | SCM contregs; | |
848 | scm_t_uint32 contregs_idx; | |
849 | ||
850 | SCM_UNPACK_RTL_24 (op, contregs_idx); | |
851 | ||
7396d216 | 852 | contregs = |
d798a895 | 853 | SCM_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (0), contregs_idx); |
510ca126 AW |
854 | |
855 | SYNC_IP (); | |
856 | scm_i_check_continuation (contregs); | |
857 | vm_return_to_continuation (scm_i_contregs_vm (contregs), | |
858 | scm_i_contregs_vm_cont (contregs), | |
b636cdb0 AW |
859 | FRAME_LOCALS_COUNT_FROM (1), |
860 | LOCAL_ADDRESS (1)); | |
510ca126 AW |
861 | scm_i_reinstate_continuation (contregs); |
862 | ||
863 | /* no NEXT */ | |
864 | abort (); | |
865 | } | |
866 | ||
867 | /* compose-continuation cont:24 | |
868 | * | |
869 | * Compose a partial continution with the current continuation. The | |
870 | * arguments to the continuation are taken from the stack. CONT is a | |
871 | * free variable containing the reified continuation. This | |
872 | * instruction is part of the implementation of partial continuations, | |
873 | * and is not generated by the compiler. | |
874 | */ | |
486013d6 | 875 | VM_DEFINE_OP (11, compose_continuation, "compose-continuation", OP1 (U8_U24)) |
510ca126 AW |
876 | { |
877 | SCM vmcont; | |
878 | scm_t_uint32 cont_idx; | |
879 | ||
880 | SCM_UNPACK_RTL_24 (op, cont_idx); | |
d798a895 | 881 | vmcont = SCM_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (0), cont_idx); |
510ca126 AW |
882 | |
883 | SYNC_IP (); | |
884 | VM_ASSERT (SCM_VM_CONT_REWINDABLE_P (vmcont), | |
885 | vm_error_continuation_not_rewindable (vmcont)); | |
b636cdb0 AW |
886 | vm_reinstate_partial_continuation (vm, vmcont, FRAME_LOCALS_COUNT_FROM (1), |
887 | LOCAL_ADDRESS (1), | |
510ca126 AW |
888 | ¤t_thread->dynstack, |
889 | ®isters); | |
890 | CACHE_REGISTER (); | |
891 | NEXT (0); | |
892 | } | |
893 | ||
adb8d905 | 894 | /* tail-apply _:24 |
510ca126 AW |
895 | * |
896 | * Tail-apply the procedure in local slot 0 to the rest of the | |
897 | * arguments. This instruction is part of the implementation of | |
898 | * `apply', and is not generated by the compiler. | |
899 | */ | |
486013d6 | 900 | VM_DEFINE_OP (12, tail_apply, "tail-apply", OP1 (U8_X24)) |
510ca126 | 901 | { |
e93c0430 | 902 | int i, list_idx, list_len, nlocals; |
510ca126 AW |
903 | SCM list; |
904 | ||
905 | VM_HANDLE_INTERRUPTS; | |
906 | ||
e93c0430 AW |
907 | nlocals = FRAME_LOCALS_COUNT (); |
908 | // At a minimum, there should be apply, f, and the list. | |
909 | VM_ASSERT (nlocals >= 3, abort ()); | |
910 | list_idx = nlocals - 1; | |
510ca126 AW |
911 | list = LOCAL_REF (list_idx); |
912 | list_len = scm_ilength (list); | |
913 | ||
914 | VM_ASSERT (list_len >= 0, vm_error_apply_to_non_list (list)); | |
915 | ||
e93c0430 AW |
916 | nlocals = nlocals - 2 + list_len; |
917 | ALLOC_FRAME (nlocals); | |
510ca126 | 918 | |
e93c0430 AW |
919 | for (i = 1; i < list_idx; i++) |
920 | LOCAL_SET (i - 1, LOCAL_REF (i)); | |
510ca126 AW |
921 | |
922 | /* Null out these slots, just in case there are less than 2 elements | |
923 | in the list. */ | |
7396d216 AW |
924 | LOCAL_SET (list_idx - 1, SCM_UNDEFINED); |
925 | LOCAL_SET (list_idx, SCM_UNDEFINED); | |
510ca126 AW |
926 | |
927 | for (i = 0; i < list_len; i++, list = SCM_CDR (list)) | |
7396d216 | 928 | LOCAL_SET (list_idx - 1 + i, SCM_CAR (list)); |
510ca126 AW |
929 | |
930 | APPLY_HOOK (); | |
931 | ||
d798a895 | 932 | if (SCM_UNLIKELY (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp)))) |
510ca126 AW |
933 | goto apply; |
934 | ||
d798a895 | 935 | ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); |
510ca126 AW |
936 | NEXT (0); |
937 | } | |
938 | ||
939 | /* call/cc _:24 | |
940 | * | |
941 | * Capture the current continuation, and tail-apply the procedure in | |
d691ac20 | 942 | * local slot 1 to it. This instruction is part of the implementation |
510ca126 AW |
943 | * of `call/cc', and is not generated by the compiler. |
944 | */ | |
486013d6 | 945 | VM_DEFINE_OP (13, call_cc, "call/cc", OP1 (U8_X24)) |
510ca126 AW |
946 | { |
947 | SCM vm_cont, cont; | |
948 | scm_t_dynstack *dynstack; | |
d691ac20 | 949 | int first; |
510ca126 AW |
950 | |
951 | VM_HANDLE_INTERRUPTS; | |
952 | ||
953 | SYNC_IP (); | |
954 | dynstack = scm_dynstack_capture_all (¤t_thread->dynstack); | |
955 | vm_cont = scm_i_vm_capture_stack (vp->stack_base, | |
956 | SCM_FRAME_DYNAMIC_LINK (fp), | |
b636cdb0 | 957 | SCM_FRAME_PREVIOUS_SP (fp), |
510ca126 | 958 | SCM_FRAME_RETURN_ADDRESS (fp), |
510ca126 AW |
959 | dynstack, |
960 | 0); | |
d691ac20 AW |
961 | /* FIXME: Seems silly to capture the registers here, when they are |
962 | already captured in the registers local, which here we are | |
963 | copying out to the heap; and likewise, the setjmp(®isters) | |
964 | code already has the non-local return handler. But oh | |
965 | well! */ | |
966 | cont = scm_i_make_continuation (&first, vm, vm_cont); | |
967 | ||
968 | if (first) | |
969 | { | |
970 | LOCAL_SET (0, LOCAL_REF (1)); | |
971 | LOCAL_SET (1, cont); | |
972 | RESET_FRAME (2); | |
510ca126 | 973 | |
d691ac20 | 974 | APPLY_HOOK (); |
510ca126 | 975 | |
d798a895 | 976 | if (SCM_UNLIKELY (!SCM_PROGRAM_P (SCM_FRAME_PROGRAM (fp)))) |
d691ac20 | 977 | goto apply; |
510ca126 | 978 | |
d798a895 | 979 | ip = SCM_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); |
d691ac20 AW |
980 | NEXT (0); |
981 | } | |
982 | else | |
983 | { | |
984 | CACHE_REGISTER (); | |
b636cdb0 | 985 | ABORT_CONTINUATION_HOOK (); |
d691ac20 AW |
986 | NEXT (0); |
987 | } | |
510ca126 | 988 | } |
510ca126 | 989 | |
486013d6 AW |
990 | /* abort _:24 |
991 | * | |
992 | * Abort to a prompt handler. The tag is expected in r1, and the rest | |
993 | * of the values in the frame are returned to the prompt handler. | |
994 | * This corresponds to a tail application of abort-to-prompt. | |
995 | */ | |
996 | VM_DEFINE_OP (14, abort, "abort", OP1 (U8_X24)) | |
997 | { | |
998 | scm_t_uint32 nlocals = FRAME_LOCALS_COUNT (); | |
999 | ||
1000 | ASSERT (nlocals >= 2); | |
186b56c4 AW |
1001 | /* FIXME: Really we should capture the caller's registers. Until |
1002 | then, manually advance the IP so that when the prompt resumes, | |
1003 | it continues with the next instruction. */ | |
1004 | ip++; | |
486013d6 | 1005 | SYNC_IP (); |
b636cdb0 AW |
1006 | vm_abort (vm, LOCAL_REF (1), nlocals - 2, LOCAL_ADDRESS (2), |
1007 | SCM_EOL, LOCAL_ADDRESS (0), ®isters); | |
486013d6 AW |
1008 | |
1009 | /* vm_abort should not return */ | |
1010 | abort (); | |
1011 | } | |
1012 | ||
1013 | /* builtin-ref dst:12 idx:12 | |
1014 | * | |
1015 | * Load a builtin stub by index into DST. | |
1016 | */ | |
1017 | VM_DEFINE_OP (15, builtin_ref, "builtin-ref", OP1 (U8_U12_U12) | OP_DST) | |
1018 | { | |
1019 | scm_t_uint16 dst, idx; | |
1020 | ||
1021 | SCM_UNPACK_RTL_12_12 (op, dst, idx); | |
1022 | LOCAL_SET (dst, scm_vm_builtin_ref (idx)); | |
1023 | ||
1024 | NEXT (1); | |
1025 | } | |
1026 | ||
510ca126 AW |
1027 | |
1028 | \f | |
1029 | ||
1030 | /* | |
1031 | * Function prologues | |
1032 | */ | |
1033 | ||
1034 | /* br-if-nargs-ne expected:24 _:8 offset:24 | |
1035 | * br-if-nargs-lt expected:24 _:8 offset:24 | |
1036 | * br-if-nargs-gt expected:24 _:8 offset:24 | |
1037 | * | |
1038 | * If the number of actual arguments is not equal, less than, or greater | |
1039 | * than EXPECTED, respectively, add OFFSET, a signed 24-bit number, to | |
1040 | * the current instruction pointer. | |
1041 | */ | |
486013d6 | 1042 | VM_DEFINE_OP (16, br_if_nargs_ne, "br-if-nargs-ne", OP2 (U8_U24, X8_L24)) |
510ca126 AW |
1043 | { |
1044 | BR_NARGS (!=); | |
1045 | } | |
486013d6 | 1046 | VM_DEFINE_OP (17, br_if_nargs_lt, "br-if-nargs-lt", OP2 (U8_U24, X8_L24)) |
510ca126 AW |
1047 | { |
1048 | BR_NARGS (<); | |
1049 | } | |
486013d6 | 1050 | VM_DEFINE_OP (18, br_if_nargs_gt, "br-if-nargs-gt", OP2 (U8_U24, X8_L24)) |
510ca126 AW |
1051 | { |
1052 | BR_NARGS (>); | |
1053 | } | |
1054 | ||
1055 | /* assert-nargs-ee expected:24 | |
1056 | * assert-nargs-ge expected:24 | |
1057 | * assert-nargs-le expected:24 | |
1058 | * | |
1059 | * If the number of actual arguments is not ==, >=, or <= EXPECTED, | |
1060 | * respectively, signal an error. | |
1061 | */ | |
486013d6 | 1062 | VM_DEFINE_OP (19, assert_nargs_ee, "assert-nargs-ee", OP1 (U8_U24)) |
510ca126 AW |
1063 | { |
1064 | scm_t_uint32 expected; | |
1065 | SCM_UNPACK_RTL_24 (op, expected); | |
1066 | VM_ASSERT (FRAME_LOCALS_COUNT () == expected, | |
1067 | vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp))); | |
1068 | NEXT (1); | |
1069 | } | |
486013d6 | 1070 | VM_DEFINE_OP (20, assert_nargs_ge, "assert-nargs-ge", OP1 (U8_U24)) |
510ca126 AW |
1071 | { |
1072 | scm_t_uint32 expected; | |
1073 | SCM_UNPACK_RTL_24 (op, expected); | |
1074 | VM_ASSERT (FRAME_LOCALS_COUNT () >= expected, | |
1075 | vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp))); | |
1076 | NEXT (1); | |
1077 | } | |
486013d6 | 1078 | VM_DEFINE_OP (21, assert_nargs_le, "assert-nargs-le", OP1 (U8_U24)) |
510ca126 AW |
1079 | { |
1080 | scm_t_uint32 expected; | |
1081 | SCM_UNPACK_RTL_24 (op, expected); | |
1082 | VM_ASSERT (FRAME_LOCALS_COUNT () <= expected, | |
1083 | vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp))); | |
1084 | NEXT (1); | |
1085 | } | |
1086 | ||
af95414f | 1087 | /* alloc-frame nlocals:24 |
510ca126 AW |
1088 | * |
1089 | * Ensure that there is space on the stack for NLOCALS local variables, | |
1090 | * setting them all to SCM_UNDEFINED, except those nargs values that | |
7396d216 | 1091 | * were passed as arguments and procedure. |
510ca126 | 1092 | */ |
486013d6 | 1093 | VM_DEFINE_OP (22, alloc_frame, "alloc-frame", OP1 (U8_U24)) |
510ca126 AW |
1094 | { |
1095 | scm_t_uint32 nlocals, nargs; | |
1096 | SCM_UNPACK_RTL_24 (op, nlocals); | |
1097 | ||
1098 | nargs = FRAME_LOCALS_COUNT (); | |
1099 | ALLOC_FRAME (nlocals); | |
1100 | while (nlocals-- > nargs) | |
1101 | LOCAL_SET (nlocals, SCM_UNDEFINED); | |
1102 | ||
1103 | NEXT (1); | |
1104 | } | |
1105 | ||
af95414f AW |
1106 | /* reset-frame nlocals:24 |
1107 | * | |
1108 | * Like alloc-frame, but doesn't check that the stack is big enough. | |
1109 | * Used to reset the frame size to something less than the size that | |
1110 | * was previously set via alloc-frame. | |
1111 | */ | |
486013d6 | 1112 | VM_DEFINE_OP (23, reset_frame, "reset-frame", OP1 (U8_U24)) |
af95414f AW |
1113 | { |
1114 | scm_t_uint32 nlocals; | |
1115 | SCM_UNPACK_RTL_24 (op, nlocals); | |
1116 | RESET_FRAME (nlocals); | |
1117 | NEXT (1); | |
1118 | } | |
1119 | ||
510ca126 AW |
1120 | /* assert-nargs-ee/locals expected:12 nlocals:12 |
1121 | * | |
1122 | * Equivalent to a sequence of assert-nargs-ee and reserve-locals. The | |
1123 | * number of locals reserved is EXPECTED + NLOCALS. | |
1124 | */ | |
486013d6 | 1125 | VM_DEFINE_OP (24, assert_nargs_ee_locals, "assert-nargs-ee/locals", OP1 (U8_U12_U12)) |
510ca126 AW |
1126 | { |
1127 | scm_t_uint16 expected, nlocals; | |
1128 | SCM_UNPACK_RTL_12_12 (op, expected, nlocals); | |
1129 | VM_ASSERT (FRAME_LOCALS_COUNT () == expected, | |
1130 | vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp))); | |
1131 | ALLOC_FRAME (expected + nlocals); | |
1132 | while (nlocals--) | |
1133 | LOCAL_SET (expected + nlocals, SCM_UNDEFINED); | |
1134 | ||
1135 | NEXT (1); | |
1136 | } | |
1137 | ||
f90c0554 AW |
1138 | /* br-if-npos-gt nreq:24 _:8 npos:24 _:8 offset:24 |
1139 | * | |
1140 | * Find the first positional argument after NREQ. If it is greater | |
1141 | * than NPOS, jump to OFFSET. | |
1142 | * | |
1143 | * This instruction is only emitted for functions with multiple | |
1144 | * clauses, and an earlier clause has keywords and no rest arguments. | |
1145 | * See "Case-lambda" in the manual, for more on how case-lambda | |
1146 | * chooses the clause to apply. | |
1147 | */ | |
1148 | VM_DEFINE_OP (25, br_if_npos_gt, "br-if-npos-gt", OP3 (U8_U24, X8_U24, X8_L24)) | |
1149 | { | |
1150 | scm_t_uint32 nreq, npos; | |
1151 | ||
1152 | SCM_UNPACK_RTL_24 (op, nreq); | |
1153 | SCM_UNPACK_RTL_24 (ip[1], npos); | |
1154 | ||
1155 | /* We can only have too many positionals if there are more | |
1156 | arguments than NPOS. */ | |
1157 | if (FRAME_LOCALS_COUNT() > npos) | |
1158 | { | |
1159 | scm_t_uint32 n; | |
1160 | for (n = nreq; n < npos; n++) | |
1161 | if (scm_is_keyword (LOCAL_REF (n))) | |
1162 | break; | |
1163 | if (n == npos && !scm_is_keyword (LOCAL_REF (n))) | |
1164 | { | |
1165 | scm_t_int32 offset = ip[2]; | |
1166 | offset >>= 8; /* Sign-extending shift. */ | |
1167 | NEXT (offset); | |
1168 | } | |
1169 | } | |
1170 | NEXT (3); | |
1171 | } | |
1172 | ||
510ca126 AW |
1173 | /* bind-kwargs nreq:24 allow-other-keys:1 has-rest:1 _:6 nreq-and-opt:24 |
1174 | * _:8 ntotal:24 kw-offset:32 | |
1175 | * | |
1176 | * Find the last positional argument, and shuffle all the rest above | |
1177 | * NTOTAL. Initialize the intervening locals to SCM_UNDEFINED. Then | |
1178 | * load the constant at KW-OFFSET words from the current IP, and use it | |
1179 | * to bind keyword arguments. If HAS-REST, collect all shuffled | |
1180 | * arguments into a list, and store it in NREQ-AND-OPT. Finally, clear | |
1181 | * the arguments that we shuffled up. | |
1182 | * | |
1183 | * A macro-mega-instruction. | |
1184 | */ | |
f90c0554 | 1185 | VM_DEFINE_OP (26, bind_kwargs, "bind-kwargs", OP4 (U8_U24, U8_U24, X8_U24, N32)) |
510ca126 AW |
1186 | { |
1187 | scm_t_uint32 nreq, nreq_and_opt, ntotal, npositional, nkw, n, nargs; | |
1188 | scm_t_int32 kw_offset; | |
1189 | scm_t_bits kw_bits; | |
1190 | SCM kw; | |
1191 | char allow_other_keys, has_rest; | |
1192 | ||
1193 | SCM_UNPACK_RTL_24 (op, nreq); | |
1194 | allow_other_keys = ip[1] & 0x1; | |
1195 | has_rest = ip[1] & 0x2; | |
1196 | SCM_UNPACK_RTL_24 (ip[1], nreq_and_opt); | |
1197 | SCM_UNPACK_RTL_24 (ip[2], ntotal); | |
1198 | kw_offset = ip[3]; | |
1199 | kw_bits = (scm_t_bits) (ip + kw_offset); | |
1200 | VM_ASSERT (!(kw_bits & 0x7), abort()); | |
1201 | kw = SCM_PACK (kw_bits); | |
1202 | ||
1203 | nargs = FRAME_LOCALS_COUNT (); | |
1204 | ||
1205 | /* look in optionals for first keyword or last positional */ | |
1206 | /* starting after the last required positional arg */ | |
1207 | npositional = nreq; | |
1208 | while (/* while we have args */ | |
1209 | npositional < nargs | |
1210 | /* and we still have positionals to fill */ | |
1211 | && npositional < nreq_and_opt | |
1212 | /* and we haven't reached a keyword yet */ | |
1213 | && !scm_is_keyword (LOCAL_REF (npositional))) | |
1214 | /* bind this optional arg (by leaving it in place) */ | |
1215 | npositional++; | |
1216 | nkw = nargs - npositional; | |
1217 | /* shuffle non-positional arguments above ntotal */ | |
1218 | ALLOC_FRAME (ntotal + nkw); | |
1219 | n = nkw; | |
1220 | while (n--) | |
1221 | LOCAL_SET (ntotal + n, LOCAL_REF (npositional + n)); | |
1222 | /* and fill optionals & keyword args with SCM_UNDEFINED */ | |
1223 | n = npositional; | |
1224 | while (n < ntotal) | |
1225 | LOCAL_SET (n++, SCM_UNDEFINED); | |
1226 | ||
1227 | VM_ASSERT (has_rest || (nkw % 2) == 0, | |
1228 | vm_error_kwargs_length_not_even (SCM_FRAME_PROGRAM (fp))); | |
1229 | ||
1230 | /* Now bind keywords, in the order given. */ | |
1231 | for (n = 0; n < nkw; n++) | |
1232 | if (scm_is_keyword (LOCAL_REF (ntotal + n))) | |
1233 | { | |
1234 | SCM walk; | |
1235 | for (walk = kw; scm_is_pair (walk); walk = SCM_CDR (walk)) | |
1236 | if (scm_is_eq (SCM_CAAR (walk), LOCAL_REF (ntotal + n))) | |
1237 | { | |
1238 | SCM si = SCM_CDAR (walk); | |
1239 | LOCAL_SET (SCM_I_INUMP (si) ? SCM_I_INUM (si) : scm_to_uint32 (si), | |
1240 | LOCAL_REF (ntotal + n + 1)); | |
1241 | break; | |
1242 | } | |
1243 | VM_ASSERT (scm_is_pair (walk) || allow_other_keys, | |
28d5d253 MW |
1244 | vm_error_kwargs_unrecognized_keyword (SCM_FRAME_PROGRAM (fp), |
1245 | LOCAL_REF (ntotal + n))); | |
510ca126 AW |
1246 | n++; |
1247 | } | |
1248 | else | |
28d5d253 MW |
1249 | VM_ASSERT (has_rest, vm_error_kwargs_invalid_keyword (SCM_FRAME_PROGRAM (fp), |
1250 | LOCAL_REF (ntotal + n))); | |
510ca126 AW |
1251 | |
1252 | if (has_rest) | |
1253 | { | |
1254 | SCM rest = SCM_EOL; | |
1255 | n = nkw; | |
1256 | while (n--) | |
1257 | rest = scm_cons (LOCAL_REF (ntotal + n), rest); | |
1258 | LOCAL_SET (nreq_and_opt, rest); | |
1259 | } | |
1260 | ||
1261 | RESET_FRAME (ntotal); | |
1262 | ||
1263 | NEXT (4); | |
1264 | } | |
1265 | ||
1266 | /* bind-rest dst:24 | |
1267 | * | |
1268 | * Collect any arguments at or above DST into a list, and store that | |
1269 | * list at DST. | |
1270 | */ | |
f90c0554 | 1271 | VM_DEFINE_OP (27, bind_rest, "bind-rest", OP1 (U8_U24) | OP_DST) |
510ca126 AW |
1272 | { |
1273 | scm_t_uint32 dst, nargs; | |
1274 | SCM rest = SCM_EOL; | |
1275 | ||
1276 | SCM_UNPACK_RTL_24 (op, dst); | |
1277 | nargs = FRAME_LOCALS_COUNT (); | |
1278 | ||
234155e3 | 1279 | if (nargs <= dst) |
510ca126 | 1280 | { |
234155e3 AW |
1281 | ALLOC_FRAME (dst + 1); |
1282 | while (nargs < dst) | |
1283 | LOCAL_SET (nargs++, SCM_UNDEFINED); | |
510ca126 | 1284 | } |
234155e3 AW |
1285 | else |
1286 | { | |
1287 | while (nargs-- > dst) | |
1288 | { | |
1289 | rest = scm_cons (LOCAL_REF (nargs), rest); | |
1290 | LOCAL_SET (nargs, SCM_UNDEFINED); | |
1291 | } | |
510ca126 | 1292 | |
234155e3 AW |
1293 | RESET_FRAME (dst + 1); |
1294 | } | |
510ca126 | 1295 | |
234155e3 | 1296 | LOCAL_SET (dst, rest); |
510ca126 AW |
1297 | |
1298 | NEXT (1); | |
1299 | } | |
1300 | ||
510ca126 AW |
1301 | |
1302 | \f | |
1303 | ||
1304 | /* | |
1305 | * Branching instructions | |
1306 | */ | |
1307 | ||
1308 | /* br offset:24 | |
1309 | * | |
1310 | * Add OFFSET, a signed 24-bit number, to the current instruction | |
1311 | * pointer. | |
1312 | */ | |
f90c0554 | 1313 | VM_DEFINE_OP (28, br, "br", OP1 (U8_L24)) |
510ca126 AW |
1314 | { |
1315 | scm_t_int32 offset = op; | |
1316 | offset >>= 8; /* Sign-extending shift. */ | |
1317 | NEXT (offset); | |
1318 | } | |
1319 | ||
1320 | /* br-if-true test:24 invert:1 _:7 offset:24 | |
1321 | * | |
1322 | * If the value in TEST is true for the purposes of Scheme, add | |
1323 | * OFFSET, a signed 24-bit number, to the current instruction pointer. | |
1324 | */ | |
f90c0554 | 1325 | VM_DEFINE_OP (29, br_if_true, "br-if-true", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1326 | { |
1327 | BR_UNARY (x, scm_is_true (x)); | |
1328 | } | |
1329 | ||
1330 | /* br-if-null test:24 invert:1 _:7 offset:24 | |
1331 | * | |
1332 | * If the value in TEST is the end-of-list or Lisp nil, add OFFSET, a | |
1333 | * signed 24-bit number, to the current instruction pointer. | |
1334 | */ | |
f90c0554 | 1335 | VM_DEFINE_OP (30, br_if_null, "br-if-null", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1336 | { |
1337 | BR_UNARY (x, scm_is_null (x)); | |
1338 | } | |
1339 | ||
1340 | /* br-if-nil test:24 invert:1 _:7 offset:24 | |
1341 | * | |
1342 | * If the value in TEST is false to Lisp, add OFFSET, a signed 24-bit | |
1343 | * number, to the current instruction pointer. | |
1344 | */ | |
f90c0554 | 1345 | VM_DEFINE_OP (31, br_if_nil, "br-if-nil", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1346 | { |
1347 | BR_UNARY (x, scm_is_lisp_false (x)); | |
1348 | } | |
1349 | ||
1350 | /* br-if-pair test:24 invert:1 _:7 offset:24 | |
1351 | * | |
1352 | * If the value in TEST is a pair, add OFFSET, a signed 24-bit number, | |
1353 | * to the current instruction pointer. | |
1354 | */ | |
f90c0554 | 1355 | VM_DEFINE_OP (32, br_if_pair, "br-if-pair", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1356 | { |
1357 | BR_UNARY (x, scm_is_pair (x)); | |
1358 | } | |
1359 | ||
1360 | /* br-if-struct test:24 invert:1 _:7 offset:24 | |
1361 | * | |
1362 | * If the value in TEST is a struct, add OFFSET, a signed 24-bit | |
1363 | * number, to the current instruction pointer. | |
1364 | */ | |
f90c0554 | 1365 | VM_DEFINE_OP (33, br_if_struct, "br-if-struct", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1366 | { |
1367 | BR_UNARY (x, SCM_STRUCTP (x)); | |
1368 | } | |
1369 | ||
1370 | /* br-if-char test:24 invert:1 _:7 offset:24 | |
1371 | * | |
1372 | * If the value in TEST is a char, add OFFSET, a signed 24-bit number, | |
1373 | * to the current instruction pointer. | |
1374 | */ | |
f90c0554 | 1375 | VM_DEFINE_OP (34, br_if_char, "br-if-char", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1376 | { |
1377 | BR_UNARY (x, SCM_CHARP (x)); | |
1378 | } | |
1379 | ||
1380 | /* br-if-tc7 test:24 invert:1 tc7:7 offset:24 | |
1381 | * | |
1382 | * If the value in TEST has the TC7 given in the second word, add | |
1383 | * OFFSET, a signed 24-bit number, to the current instruction pointer. | |
1384 | */ | |
f90c0554 | 1385 | VM_DEFINE_OP (35, br_if_tc7, "br-if-tc7", OP2 (U8_U24, B1_U7_L24)) |
510ca126 AW |
1386 | { |
1387 | BR_UNARY (x, SCM_HAS_TYP7 (x, (ip[1] >> 1) & 0x7f)); | |
1388 | } | |
1389 | ||
1390 | /* br-if-eq a:12 b:12 invert:1 _:7 offset:24 | |
1391 | * | |
1392 | * If the value in A is eq? to the value in B, add OFFSET, a signed | |
1393 | * 24-bit number, to the current instruction pointer. | |
1394 | */ | |
f90c0554 | 1395 | VM_DEFINE_OP (36, br_if_eq, "br-if-eq", OP2 (U8_U12_U12, B1_X7_L24)) |
510ca126 AW |
1396 | { |
1397 | BR_BINARY (x, y, scm_is_eq (x, y)); | |
1398 | } | |
1399 | ||
1400 | /* br-if-eqv a:12 b:12 invert:1 _:7 offset:24 | |
1401 | * | |
1402 | * If the value in A is eqv? to the value in B, add OFFSET, a signed | |
1403 | * 24-bit number, to the current instruction pointer. | |
1404 | */ | |
f90c0554 | 1405 | VM_DEFINE_OP (37, br_if_eqv, "br-if-eqv", OP2 (U8_U12_U12, B1_X7_L24)) |
510ca126 AW |
1406 | { |
1407 | BR_BINARY (x, y, | |
1408 | scm_is_eq (x, y) | |
1409 | || (SCM_NIMP (x) && SCM_NIMP (y) | |
1410 | && scm_is_true (scm_eqv_p (x, y)))); | |
1411 | } | |
1412 | ||
af95414f | 1413 | // FIXME: remove, have compiler inline eqv test instead |
510ca126 AW |
1414 | /* br-if-equal a:12 b:12 invert:1 _:7 offset:24 |
1415 | * | |
1416 | * If the value in A is equal? to the value in B, add OFFSET, a signed | |
1417 | * 24-bit number, to the current instruction pointer. | |
1418 | */ | |
1419 | // FIXME: should sync_ip before calling out? | |
f90c0554 | 1420 | VM_DEFINE_OP (38, br_if_equal, "br-if-equal", OP2 (U8_U12_U12, B1_X7_L24)) |
510ca126 AW |
1421 | { |
1422 | BR_BINARY (x, y, | |
1423 | scm_is_eq (x, y) | |
1424 | || (SCM_NIMP (x) && SCM_NIMP (y) | |
1425 | && scm_is_true (scm_equal_p (x, y)))); | |
1426 | } | |
1427 | ||
af95414f | 1428 | /* br-if-= a:12 b:12 invert:1 _:7 offset:24 |
510ca126 AW |
1429 | * |
1430 | * If the value in A is = to the value in B, add OFFSET, a signed | |
1431 | * 24-bit number, to the current instruction pointer. | |
1432 | */ | |
f90c0554 | 1433 | VM_DEFINE_OP (39, br_if_ee, "br-if-=", OP2 (U8_U12_U12, B1_X7_L24)) |
510ca126 AW |
1434 | { |
1435 | BR_ARITHMETIC (==, scm_num_eq_p); | |
1436 | } | |
1437 | ||
1438 | /* br-if-< a:12 b:12 _:8 offset:24 | |
1439 | * | |
1440 | * If the value in A is < to the value in B, add OFFSET, a signed | |
1441 | * 24-bit number, to the current instruction pointer. | |
1442 | */ | |
f90c0554 | 1443 | VM_DEFINE_OP (40, br_if_lt, "br-if-<", OP2 (U8_U12_U12, B1_X7_L24)) |
510ca126 AW |
1444 | { |
1445 | BR_ARITHMETIC (<, scm_less_p); | |
1446 | } | |
1447 | ||
1448 | /* br-if-<= a:12 b:12 _:8 offset:24 | |
1449 | * | |
1450 | * If the value in A is <= to the value in B, add OFFSET, a signed | |
1451 | * 24-bit number, to the current instruction pointer. | |
1452 | */ | |
f90c0554 | 1453 | VM_DEFINE_OP (41, br_if_le, "br-if-<=", OP2 (U8_U12_U12, B1_X7_L24)) |
510ca126 AW |
1454 | { |
1455 | BR_ARITHMETIC (<=, scm_leq_p); | |
1456 | } | |
1457 | ||
510ca126 AW |
1458 | |
1459 | \f | |
1460 | ||
1461 | /* | |
1462 | * Lexical binding instructions | |
1463 | */ | |
1464 | ||
1465 | /* mov dst:12 src:12 | |
1466 | * | |
1467 | * Copy a value from one local slot to another. | |
1468 | */ | |
f90c0554 | 1469 | VM_DEFINE_OP (42, mov, "mov", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
1470 | { |
1471 | scm_t_uint16 dst; | |
1472 | scm_t_uint16 src; | |
1473 | ||
1474 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
1475 | LOCAL_SET (dst, LOCAL_REF (src)); | |
1476 | ||
1477 | NEXT (1); | |
1478 | } | |
1479 | ||
1480 | /* long-mov dst:24 _:8 src:24 | |
1481 | * | |
1482 | * Copy a value from one local slot to another. | |
1483 | */ | |
f90c0554 | 1484 | VM_DEFINE_OP (43, long_mov, "long-mov", OP2 (U8_U24, X8_U24) | OP_DST) |
510ca126 AW |
1485 | { |
1486 | scm_t_uint32 dst; | |
1487 | scm_t_uint32 src; | |
1488 | ||
1489 | SCM_UNPACK_RTL_24 (op, dst); | |
1490 | SCM_UNPACK_RTL_24 (ip[1], src); | |
1491 | LOCAL_SET (dst, LOCAL_REF (src)); | |
1492 | ||
1493 | NEXT (2); | |
1494 | } | |
1495 | ||
1496 | /* box dst:12 src:12 | |
1497 | * | |
1498 | * Create a new variable holding SRC, and place it in DST. | |
1499 | */ | |
f90c0554 | 1500 | VM_DEFINE_OP (44, box, "box", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
1501 | { |
1502 | scm_t_uint16 dst, src; | |
1503 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
1504 | LOCAL_SET (dst, scm_cell (scm_tc7_variable, SCM_UNPACK (LOCAL_REF (src)))); | |
1505 | NEXT (1); | |
1506 | } | |
1507 | ||
510ca126 AW |
1508 | /* box-ref dst:12 src:12 |
1509 | * | |
1510 | * Unpack the variable at SRC into DST, asserting that the variable is | |
1511 | * actually bound. | |
1512 | */ | |
f90c0554 | 1513 | VM_DEFINE_OP (45, box_ref, "box-ref", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
1514 | { |
1515 | scm_t_uint16 dst, src; | |
1516 | SCM var; | |
1517 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
1518 | var = LOCAL_REF (src); | |
4f406fea AW |
1519 | VM_ASSERT (SCM_VARIABLEP (var), |
1520 | vm_error_not_a_variable ("variable-ref", var)); | |
af95414f AW |
1521 | VM_ASSERT (VARIABLE_BOUNDP (var), |
1522 | vm_error_unbound (SCM_FRAME_PROGRAM (fp), var)); | |
510ca126 AW |
1523 | LOCAL_SET (dst, VARIABLE_REF (var)); |
1524 | NEXT (1); | |
1525 | } | |
1526 | ||
1527 | /* box-set! dst:12 src:12 | |
1528 | * | |
1529 | * Set the contents of the variable at DST to SET. | |
1530 | */ | |
f90c0554 | 1531 | VM_DEFINE_OP (46, box_set, "box-set!", OP1 (U8_U12_U12)) |
510ca126 AW |
1532 | { |
1533 | scm_t_uint16 dst, src; | |
1534 | SCM var; | |
1535 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
1536 | var = LOCAL_REF (dst); | |
4f406fea AW |
1537 | VM_ASSERT (SCM_VARIABLEP (var), |
1538 | vm_error_not_a_variable ("variable-set!", var)); | |
510ca126 AW |
1539 | VARIABLE_SET (var, LOCAL_REF (src)); |
1540 | NEXT (1); | |
1541 | } | |
1542 | ||
7396d216 | 1543 | /* make-closure dst:24 offset:32 _:8 nfree:24 |
510ca126 AW |
1544 | * |
1545 | * Make a new closure, and write it to DST. The code for the closure | |
1546 | * will be found at OFFSET words from the current IP. OFFSET is a | |
7396d216 AW |
1547 | * signed 32-bit integer. Space for NFREE free variables will be |
1548 | * allocated. | |
510ca126 | 1549 | */ |
f90c0554 | 1550 | VM_DEFINE_OP (47, make_closure, "make-closure", OP3 (U8_U24, L32, X8_U24) | OP_DST) |
510ca126 AW |
1551 | { |
1552 | scm_t_uint32 dst, nfree, n; | |
1553 | scm_t_int32 offset; | |
1554 | SCM closure; | |
1555 | ||
1556 | SCM_UNPACK_RTL_24 (op, dst); | |
1557 | offset = ip[1]; | |
1558 | SCM_UNPACK_RTL_24 (ip[2], nfree); | |
1559 | ||
1560 | // FIXME: Assert range of nfree? | |
e0755cd1 | 1561 | closure = scm_words (scm_tc7_program | (nfree << 16), nfree + 2); |
510ca126 | 1562 | SCM_SET_CELL_WORD_1 (closure, ip + offset); |
7396d216 | 1563 | // FIXME: Elide these initializations? |
510ca126 | 1564 | for (n = 0; n < nfree; n++) |
d798a895 | 1565 | SCM_PROGRAM_FREE_VARIABLE_SET (closure, n, SCM_BOOL_F); |
510ca126 | 1566 | LOCAL_SET (dst, closure); |
7396d216 | 1567 | NEXT (3); |
510ca126 AW |
1568 | } |
1569 | ||
7396d216 | 1570 | /* free-ref dst:12 src:12 _:8 idx:24 |
510ca126 | 1571 | * |
7396d216 | 1572 | * Load free variable IDX from the closure SRC into local slot DST. |
510ca126 | 1573 | */ |
f90c0554 | 1574 | VM_DEFINE_OP (48, free_ref, "free-ref", OP2 (U8_U12_U12, X8_U24) | OP_DST) |
510ca126 | 1575 | { |
7396d216 AW |
1576 | scm_t_uint16 dst, src; |
1577 | scm_t_uint32 idx; | |
1578 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
1579 | SCM_UNPACK_RTL_24 (ip[1], idx); | |
1580 | /* CHECK_FREE_VARIABLE (src); */ | |
d798a895 | 1581 | LOCAL_SET (dst, SCM_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (src), idx)); |
7396d216 AW |
1582 | NEXT (2); |
1583 | } | |
510ca126 | 1584 | |
7396d216 AW |
1585 | /* free-set! dst:12 src:12 _8 idx:24 |
1586 | * | |
1587 | * Set free variable IDX from the closure DST to SRC. | |
1588 | */ | |
f90c0554 | 1589 | VM_DEFINE_OP (49, free_set, "free-set!", OP2 (U8_U12_U12, X8_U24)) |
7396d216 AW |
1590 | { |
1591 | scm_t_uint16 dst, src; | |
1592 | scm_t_uint32 idx; | |
1593 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
1594 | SCM_UNPACK_RTL_24 (ip[1], idx); | |
1595 | /* CHECK_FREE_VARIABLE (src); */ | |
d798a895 | 1596 | SCM_PROGRAM_FREE_VARIABLE_SET (LOCAL_REF (dst), idx, LOCAL_REF (src)); |
7396d216 | 1597 | NEXT (2); |
510ca126 AW |
1598 | } |
1599 | ||
1600 | ||
1601 | \f | |
1602 | ||
1603 | /* | |
1604 | * Immediates and statically allocated non-immediates | |
1605 | */ | |
1606 | ||
1607 | /* make-short-immediate dst:8 low-bits:16 | |
1608 | * | |
1609 | * Make an immediate whose low bits are LOW-BITS, and whose top bits are | |
1610 | * 0. | |
1611 | */ | |
f90c0554 | 1612 | VM_DEFINE_OP (50, make_short_immediate, "make-short-immediate", OP1 (U8_U8_I16) | OP_DST) |
510ca126 AW |
1613 | { |
1614 | scm_t_uint8 dst; | |
1615 | scm_t_bits val; | |
1616 | ||
1617 | SCM_UNPACK_RTL_8_16 (op, dst, val); | |
1618 | LOCAL_SET (dst, SCM_PACK (val)); | |
1619 | NEXT (1); | |
1620 | } | |
1621 | ||
1622 | /* make-long-immediate dst:24 low-bits:32 | |
1623 | * | |
1624 | * Make an immediate whose low bits are LOW-BITS, and whose top bits are | |
1625 | * 0. | |
1626 | */ | |
f90c0554 | 1627 | VM_DEFINE_OP (51, make_long_immediate, "make-long-immediate", OP2 (U8_U24, I32)) |
510ca126 | 1628 | { |
da60ba80 | 1629 | scm_t_uint32 dst; |
510ca126 AW |
1630 | scm_t_bits val; |
1631 | ||
1632 | SCM_UNPACK_RTL_24 (op, dst); | |
1633 | val = ip[1]; | |
1634 | LOCAL_SET (dst, SCM_PACK (val)); | |
1635 | NEXT (2); | |
1636 | } | |
1637 | ||
1638 | /* make-long-long-immediate dst:24 high-bits:32 low-bits:32 | |
1639 | * | |
1640 | * Make an immediate with HIGH-BITS and LOW-BITS. | |
1641 | */ | |
f90c0554 | 1642 | VM_DEFINE_OP (52, make_long_long_immediate, "make-long-long-immediate", OP3 (U8_U24, A32, B32) | OP_DST) |
510ca126 | 1643 | { |
da60ba80 | 1644 | scm_t_uint32 dst; |
510ca126 AW |
1645 | scm_t_bits val; |
1646 | ||
1647 | SCM_UNPACK_RTL_24 (op, dst); | |
1648 | #if SIZEOF_SCM_T_BITS > 4 | |
1649 | val = ip[1]; | |
1650 | val <<= 32; | |
1651 | val |= ip[2]; | |
1652 | #else | |
1653 | ASSERT (ip[1] == 0); | |
1654 | val = ip[2]; | |
1655 | #endif | |
1656 | LOCAL_SET (dst, SCM_PACK (val)); | |
1657 | NEXT (3); | |
1658 | } | |
1659 | ||
1660 | /* make-non-immediate dst:24 offset:32 | |
1661 | * | |
1662 | * Load a pointer to statically allocated memory into DST. The | |
1663 | * object's memory is will be found OFFSET 32-bit words away from the | |
1664 | * current instruction pointer. OFFSET is a signed value. The | |
1665 | * intention here is that the compiler would produce an object file | |
1666 | * containing the words of a non-immediate object, and this | |
1667 | * instruction creates a pointer to that memory, effectively | |
1668 | * resurrecting that object. | |
1669 | * | |
1670 | * Whether the object is mutable or immutable depends on where it was | |
1671 | * allocated by the compiler, and loaded by the loader. | |
1672 | */ | |
f90c0554 | 1673 | VM_DEFINE_OP (53, make_non_immediate, "make-non-immediate", OP2 (U8_U24, N32) | OP_DST) |
510ca126 AW |
1674 | { |
1675 | scm_t_uint32 dst; | |
1676 | scm_t_int32 offset; | |
1677 | scm_t_uint32* loc; | |
1678 | scm_t_bits unpacked; | |
1679 | ||
1680 | SCM_UNPACK_RTL_24 (op, dst); | |
1681 | offset = ip[1]; | |
1682 | loc = ip + offset; | |
1683 | unpacked = (scm_t_bits) loc; | |
1684 | ||
1685 | VM_ASSERT (!(unpacked & 0x7), abort()); | |
1686 | ||
1687 | LOCAL_SET (dst, SCM_PACK (unpacked)); | |
1688 | ||
1689 | NEXT (2); | |
1690 | } | |
1691 | ||
1692 | /* static-ref dst:24 offset:32 | |
1693 | * | |
1694 | * Load a SCM value into DST. The SCM value will be fetched from | |
1695 | * memory, OFFSET 32-bit words away from the current instruction | |
1696 | * pointer. OFFSET is a signed value. | |
1697 | * | |
1698 | * The intention is for this instruction to be used to load constants | |
1699 | * that the compiler is unable to statically allocate, like symbols. | |
1700 | * These values would be initialized when the object file loads. | |
1701 | */ | |
f90c0554 | 1702 | VM_DEFINE_OP (54, static_ref, "static-ref", OP2 (U8_U24, S32)) |
510ca126 AW |
1703 | { |
1704 | scm_t_uint32 dst; | |
1705 | scm_t_int32 offset; | |
1706 | scm_t_uint32* loc; | |
1707 | scm_t_uintptr loc_bits; | |
1708 | ||
1709 | SCM_UNPACK_RTL_24 (op, dst); | |
1710 | offset = ip[1]; | |
1711 | loc = ip + offset; | |
1712 | loc_bits = (scm_t_uintptr) loc; | |
1713 | VM_ASSERT (ALIGNED_P (loc, SCM), abort()); | |
1714 | ||
1715 | LOCAL_SET (dst, *((SCM *) loc_bits)); | |
1716 | ||
1717 | NEXT (2); | |
1718 | } | |
1719 | ||
1720 | /* static-set! src:24 offset:32 | |
1721 | * | |
1722 | * Store a SCM value into memory, OFFSET 32-bit words away from the | |
1723 | * current instruction pointer. OFFSET is a signed value. | |
1724 | */ | |
f90c0554 | 1725 | VM_DEFINE_OP (55, static_set, "static-set!", OP2 (U8_U24, LO32)) |
510ca126 AW |
1726 | { |
1727 | scm_t_uint32 src; | |
1728 | scm_t_int32 offset; | |
1729 | scm_t_uint32* loc; | |
1730 | ||
1731 | SCM_UNPACK_RTL_24 (op, src); | |
1732 | offset = ip[1]; | |
1733 | loc = ip + offset; | |
1734 | VM_ASSERT (ALIGNED_P (loc, SCM), abort()); | |
1735 | ||
1736 | *((SCM *) loc) = LOCAL_REF (src); | |
1737 | ||
1738 | NEXT (2); | |
1739 | } | |
1740 | ||
2ab2a10d | 1741 | /* static-patch! _:24 dst-offset:32 src-offset:32 |
510ca126 | 1742 | * |
2ab2a10d AW |
1743 | * Patch a pointer at DST-OFFSET to point to SRC-OFFSET. Both offsets |
1744 | * are signed 32-bit values, indicating a memory address as a number | |
1745 | * of 32-bit words away from the current instruction pointer. | |
510ca126 | 1746 | */ |
f90c0554 | 1747 | VM_DEFINE_OP (56, static_patch, "static-patch!", OP3 (U8_X24, LO32, L32)) |
510ca126 | 1748 | { |
2ab2a10d AW |
1749 | scm_t_int32 dst_offset, src_offset; |
1750 | void *src; | |
1751 | void** dst_loc; | |
510ca126 | 1752 | |
2ab2a10d AW |
1753 | dst_offset = ip[1]; |
1754 | src_offset = ip[2]; | |
510ca126 | 1755 | |
2ab2a10d AW |
1756 | dst_loc = (void **) (ip + dst_offset); |
1757 | src = ip + src_offset; | |
1758 | VM_ASSERT (ALIGNED_P (dst_loc, void*), abort()); | |
510ca126 | 1759 | |
2ab2a10d AW |
1760 | *dst_loc = src; |
1761 | ||
1762 | NEXT (3); | |
510ca126 AW |
1763 | } |
1764 | ||
1765 | \f | |
1766 | ||
1767 | /* | |
1768 | * Mutable top-level bindings | |
1769 | */ | |
1770 | ||
1771 | /* There are three slightly different ways to resolve toplevel | |
1772 | variables. | |
1773 | ||
1774 | 1. A toplevel reference outside of a function. These need to be | |
1775 | looked up when the expression is evaluated -- no later, and no | |
1776 | before. They are looked up relative to the module that is | |
1777 | current when the expression is evaluated. For example: | |
1778 | ||
1779 | (if (foo) a b) | |
1780 | ||
1781 | The "resolve" instruction resolves the variable (box), and then | |
1782 | access is via box-ref or box-set!. | |
1783 | ||
1784 | 2. A toplevel reference inside a function. These are looked up | |
1785 | relative to the module that was current when the function was | |
1786 | defined. Unlike code at the toplevel, which is usually run only | |
1787 | once, these bindings benefit from memoized lookup, in which the | |
1788 | variable resulting from the lookup is cached in the function. | |
1789 | ||
1790 | (lambda () (if (foo) a b)) | |
1791 | ||
af95414f AW |
1792 | The toplevel-box instruction is equivalent to "resolve", but |
1793 | caches the resulting variable in statically allocated memory. | |
510ca126 AW |
1794 | |
1795 | 3. A reference to an identifier with respect to a particular | |
1796 | module. This can happen for primitive references, and | |
af95414f AW |
1797 | references residualized by macro expansions. These can always |
1798 | be cached. Use module-box for these. | |
510ca126 AW |
1799 | */ |
1800 | ||
1801 | /* current-module dst:24 | |
1802 | * | |
1803 | * Store the current module in DST. | |
1804 | */ | |
f90c0554 | 1805 | VM_DEFINE_OP (57, current_module, "current-module", OP1 (U8_U24) | OP_DST) |
510ca126 AW |
1806 | { |
1807 | scm_t_uint32 dst; | |
1808 | ||
1809 | SCM_UNPACK_RTL_24 (op, dst); | |
1810 | ||
1811 | SYNC_IP (); | |
1812 | LOCAL_SET (dst, scm_current_module ()); | |
1813 | ||
1814 | NEXT (1); | |
1815 | } | |
1816 | ||
af95414f | 1817 | /* resolve dst:24 bound?:1 _:7 sym:24 |
510ca126 | 1818 | * |
af95414f AW |
1819 | * Resolve SYM in the current module, and place the resulting variable |
1820 | * in DST. | |
510ca126 | 1821 | */ |
f90c0554 | 1822 | VM_DEFINE_OP (58, resolve, "resolve", OP2 (U8_U24, B1_X7_U24) | OP_DST) |
510ca126 | 1823 | { |
af95414f AW |
1824 | scm_t_uint32 dst; |
1825 | scm_t_uint32 sym; | |
1826 | SCM var; | |
510ca126 | 1827 | |
af95414f AW |
1828 | SCM_UNPACK_RTL_24 (op, dst); |
1829 | SCM_UNPACK_RTL_24 (ip[1], sym); | |
510ca126 AW |
1830 | |
1831 | SYNC_IP (); | |
af95414f AW |
1832 | var = scm_lookup (LOCAL_REF (sym)); |
1833 | if (ip[1] & 0x1) | |
1834 | VM_ASSERT (VARIABLE_BOUNDP (var), | |
b636cdb0 | 1835 | vm_error_unbound (fp[0], LOCAL_REF (sym))); |
af95414f | 1836 | LOCAL_SET (dst, var); |
510ca126 | 1837 | |
af95414f | 1838 | NEXT (2); |
510ca126 AW |
1839 | } |
1840 | ||
6165d812 | 1841 | /* define! sym:12 val:12 |
510ca126 AW |
1842 | * |
1843 | * Look up a binding for SYM in the current module, creating it if | |
1844 | * necessary. Set its value to VAL. | |
1845 | */ | |
f90c0554 | 1846 | VM_DEFINE_OP (59, define, "define!", OP1 (U8_U12_U12)) |
510ca126 AW |
1847 | { |
1848 | scm_t_uint16 sym, val; | |
1849 | SCM_UNPACK_RTL_12_12 (op, sym, val); | |
1850 | SYNC_IP (); | |
1851 | scm_define (LOCAL_REF (sym), LOCAL_REF (val)); | |
1852 | NEXT (1); | |
1853 | } | |
1854 | ||
af95414f | 1855 | /* toplevel-box dst:24 var-offset:32 mod-offset:32 sym-offset:32 bound?:1 _:31 |
510ca126 AW |
1856 | * |
1857 | * Load a SCM value. The SCM value will be fetched from memory, | |
1858 | * VAR-OFFSET 32-bit words away from the current instruction pointer. | |
af95414f | 1859 | * VAR-OFFSET is a signed value. Up to here, toplevel-box is like |
510ca126 AW |
1860 | * static-ref. |
1861 | * | |
af95414f AW |
1862 | * Then, if the loaded value is a variable, it is placed in DST, and control |
1863 | * flow continues. | |
510ca126 AW |
1864 | * |
1865 | * Otherwise, we have to resolve the variable. In that case we load | |
1866 | * the module from MOD-OFFSET, just as we loaded the variable. | |
1867 | * Usually the module gets set when the closure is created. The name | |
1868 | * is an offset to a symbol. | |
1869 | * | |
af95414f AW |
1870 | * We use the module and the symbol to resolve the variable, placing it in |
1871 | * DST, and caching the resolved variable so that we will hit the cache next | |
1872 | * time. | |
510ca126 | 1873 | */ |
f90c0554 | 1874 | VM_DEFINE_OP (60, toplevel_box, "toplevel-box", OP5 (U8_U24, S32, S32, N32, B1_X31) | OP_DST) |
510ca126 AW |
1875 | { |
1876 | scm_t_uint32 dst; | |
1877 | scm_t_int32 var_offset; | |
1878 | scm_t_uint32* var_loc_u32; | |
1879 | SCM *var_loc; | |
1880 | SCM var; | |
1881 | ||
1882 | SCM_UNPACK_RTL_24 (op, dst); | |
1883 | var_offset = ip[1]; | |
1884 | var_loc_u32 = ip + var_offset; | |
1885 | VM_ASSERT (ALIGNED_P (var_loc_u32, SCM), abort()); | |
1886 | var_loc = (SCM *) var_loc_u32; | |
1887 | var = *var_loc; | |
1888 | ||
1889 | if (SCM_UNLIKELY (!SCM_VARIABLEP (var))) | |
1890 | { | |
1891 | SCM mod, sym; | |
1892 | scm_t_int32 mod_offset = ip[2]; /* signed */ | |
1893 | scm_t_int32 sym_offset = ip[3]; /* signed */ | |
1894 | scm_t_uint32 *mod_loc = ip + mod_offset; | |
1895 | scm_t_uint32 *sym_loc = ip + sym_offset; | |
1896 | ||
1897 | SYNC_IP (); | |
1898 | ||
1899 | VM_ASSERT (ALIGNED_P (mod_loc, SCM), abort()); | |
1900 | VM_ASSERT (ALIGNED_P (sym_loc, SCM), abort()); | |
1901 | ||
1902 | mod = *((SCM *) mod_loc); | |
1903 | sym = *((SCM *) sym_loc); | |
1904 | ||
e23f9e44 AW |
1905 | /* If the toplevel scope was captured before modules were |
1906 | booted, use the root module. */ | |
1907 | if (scm_is_false (mod)) | |
1908 | mod = scm_the_root_module (); | |
1909 | ||
510ca126 | 1910 | var = scm_module_lookup (mod, sym); |
af95414f | 1911 | if (ip[4] & 0x1) |
b636cdb0 | 1912 | VM_ASSERT (VARIABLE_BOUNDP (var), vm_error_unbound (fp[0], sym)); |
510ca126 AW |
1913 | |
1914 | *var_loc = var; | |
1915 | } | |
1916 | ||
af95414f AW |
1917 | LOCAL_SET (dst, var); |
1918 | NEXT (5); | |
510ca126 AW |
1919 | } |
1920 | ||
af95414f | 1921 | /* module-box dst:24 var-offset:32 mod-offset:32 sym-offset:32 bound?:1 _:31 |
510ca126 | 1922 | * |
af95414f | 1923 | * Like toplevel-box, except MOD-OFFSET points at the name of a module |
510ca126 AW |
1924 | * instead of the module itself. |
1925 | */ | |
f90c0554 | 1926 | VM_DEFINE_OP (61, module_box, "module-box", OP5 (U8_U24, S32, N32, N32, B1_X31) | OP_DST) |
510ca126 AW |
1927 | { |
1928 | scm_t_uint32 dst; | |
1929 | scm_t_int32 var_offset; | |
1930 | scm_t_uint32* var_loc_u32; | |
1931 | SCM *var_loc; | |
1932 | SCM var; | |
1933 | ||
1934 | SCM_UNPACK_RTL_24 (op, dst); | |
1935 | var_offset = ip[1]; | |
1936 | var_loc_u32 = ip + var_offset; | |
1937 | VM_ASSERT (ALIGNED_P (var_loc_u32, SCM), abort()); | |
1938 | var_loc = (SCM *) var_loc_u32; | |
1939 | var = *var_loc; | |
1940 | ||
1941 | if (SCM_UNLIKELY (!SCM_VARIABLEP (var))) | |
1942 | { | |
1943 | SCM modname, sym; | |
1944 | scm_t_int32 modname_offset = ip[2]; /* signed */ | |
1945 | scm_t_int32 sym_offset = ip[3]; /* signed */ | |
1946 | scm_t_uint32 *modname_words = ip + modname_offset; | |
1947 | scm_t_uint32 *sym_loc = ip + sym_offset; | |
1948 | ||
1949 | SYNC_IP (); | |
1950 | ||
1951 | VM_ASSERT (!(((scm_t_uintptr) modname_words) & 0x7), abort()); | |
1952 | VM_ASSERT (ALIGNED_P (sym_loc, SCM), abort()); | |
1953 | ||
1954 | modname = SCM_PACK ((scm_t_bits) modname_words); | |
1955 | sym = *((SCM *) sym_loc); | |
1956 | ||
e23f9e44 AW |
1957 | if (!scm_module_system_booted_p) |
1958 | { | |
1959 | #ifdef VM_ENABLE_PARANOID_ASSERTIONS | |
1960 | ASSERT | |
1961 | (scm_is_true | |
1962 | scm_equal_p (modname, | |
1963 | scm_list_2 (SCM_BOOL_T, | |
1964 | scm_from_utf8_symbol ("guile")))); | |
1965 | #endif | |
1966 | var = scm_lookup (sym); | |
1967 | } | |
1968 | else if (scm_is_true (SCM_CAR (modname))) | |
510ca126 AW |
1969 | var = scm_public_lookup (SCM_CDR (modname), sym); |
1970 | else | |
1971 | var = scm_private_lookup (SCM_CDR (modname), sym); | |
1972 | ||
af95414f | 1973 | if (ip[4] & 0x1) |
b636cdb0 | 1974 | VM_ASSERT (VARIABLE_BOUNDP (var), vm_error_unbound (fp[0], sym)); |
510ca126 AW |
1975 | |
1976 | *var_loc = var; | |
1977 | } | |
1978 | ||
af95414f AW |
1979 | LOCAL_SET (dst, var); |
1980 | NEXT (5); | |
510ca126 AW |
1981 | } |
1982 | ||
1983 | \f | |
1984 | ||
1985 | /* | |
1986 | * The dynamic environment | |
1987 | */ | |
1988 | ||
8d59d55e | 1989 | /* prompt tag:24 escape-only?:1 _:7 proc-slot:24 _:8 handler-offset:24 |
510ca126 AW |
1990 | * |
1991 | * Push a new prompt on the dynamic stack, with a tag from TAG and a | |
1992 | * handler at HANDLER-OFFSET words from the current IP. The handler | |
8d59d55e AW |
1993 | * will expect a multiple-value return as if from a call with the |
1994 | * procedure at PROC-SLOT. | |
510ca126 | 1995 | */ |
f90c0554 | 1996 | VM_DEFINE_OP (62, prompt, "prompt", OP3 (U8_U24, B1_X7_U24, X8_L24)) |
510ca126 | 1997 | { |
8d59d55e | 1998 | scm_t_uint32 tag, proc_slot; |
510ca126 AW |
1999 | scm_t_int32 offset; |
2000 | scm_t_uint8 escape_only_p; | |
2001 | scm_t_dynstack_prompt_flags flags; | |
2002 | ||
2003 | SCM_UNPACK_RTL_24 (op, tag); | |
8d59d55e AW |
2004 | escape_only_p = ip[1] & 0x1; |
2005 | SCM_UNPACK_RTL_24 (ip[1], proc_slot); | |
2006 | offset = ip[2]; | |
510ca126 AW |
2007 | offset >>= 8; /* Sign extension */ |
2008 | ||
2009 | /* Push the prompt onto the dynamic stack. */ | |
2010 | flags = escape_only_p ? SCM_F_DYNSTACK_PROMPT_ESCAPE_ONLY : 0; | |
2011 | scm_dynstack_push_prompt (¤t_thread->dynstack, flags, | |
2012 | LOCAL_REF (tag), | |
8d59d55e | 2013 | fp, |
b636cdb0 | 2014 | LOCAL_ADDRESS (proc_slot), |
9121d9f1 | 2015 | ip + offset, |
8d59d55e AW |
2016 | ®isters); |
2017 | NEXT (3); | |
510ca126 | 2018 | } |
510ca126 AW |
2019 | |
2020 | /* wind winder:12 unwinder:12 | |
2021 | * | |
2022 | * Push wind and unwind procedures onto the dynamic stack. Note that | |
2023 | * neither are actually called; the compiler should emit calls to wind | |
2024 | * and unwind for the normal dynamic-wind control flow. Also note that | |
2025 | * the compiler should have inserted checks that they wind and unwind | |
2026 | * procs are thunks, if it could not prove that to be the case. | |
2027 | */ | |
f90c0554 | 2028 | VM_DEFINE_OP (63, wind, "wind", OP1 (U8_U12_U12)) |
510ca126 AW |
2029 | { |
2030 | scm_t_uint16 winder, unwinder; | |
2031 | SCM_UNPACK_RTL_12_12 (op, winder, unwinder); | |
2032 | scm_dynstack_push_dynwind (¤t_thread->dynstack, | |
2033 | LOCAL_REF (winder), LOCAL_REF (unwinder)); | |
2034 | NEXT (1); | |
2035 | } | |
2036 | ||
510ca126 AW |
2037 | /* unwind _:24 |
2038 | * | |
2039 | * A normal exit from the dynamic extent of an expression. Pop the top | |
2040 | * entry off of the dynamic stack. | |
2041 | */ | |
f90c0554 | 2042 | VM_DEFINE_OP (64, unwind, "unwind", OP1 (U8_X24)) |
510ca126 AW |
2043 | { |
2044 | scm_dynstack_pop (¤t_thread->dynstack); | |
2045 | NEXT (1); | |
2046 | } | |
2047 | ||
98eaef1b | 2048 | /* push-fluid fluid:12 value:12 |
510ca126 AW |
2049 | * |
2050 | * Dynamically bind N fluids to values. The fluids are expected to be | |
2051 | * allocated in a continguous range on the stack, starting from | |
2052 | * FLUID-BASE. The values do not have this restriction. | |
2053 | */ | |
f90c0554 | 2054 | VM_DEFINE_OP (65, push_fluid, "push-fluid", OP1 (U8_U12_U12)) |
510ca126 | 2055 | { |
98eaef1b | 2056 | scm_t_uint32 fluid, value; |
510ca126 | 2057 | |
98eaef1b | 2058 | SCM_UNPACK_RTL_12_12 (op, fluid, value); |
510ca126 | 2059 | |
98eaef1b | 2060 | scm_dynstack_push_fluid (¤t_thread->dynstack, |
2a4ee2ac | 2061 | LOCAL_REF (fluid), LOCAL_REF (value), |
98eaef1b AW |
2062 | current_thread->dynamic_state); |
2063 | NEXT (1); | |
510ca126 | 2064 | } |
510ca126 | 2065 | |
98eaef1b | 2066 | /* pop-fluid _:24 |
510ca126 AW |
2067 | * |
2068 | * Leave the dynamic extent of a with-fluids expression, restoring the | |
2069 | * fluids to their previous values. | |
2070 | */ | |
f90c0554 | 2071 | VM_DEFINE_OP (66, pop_fluid, "pop-fluid", OP1 (U8_X24)) |
510ca126 AW |
2072 | { |
2073 | /* This function must not allocate. */ | |
98eaef1b AW |
2074 | scm_dynstack_unwind_fluid (¤t_thread->dynstack, |
2075 | current_thread->dynamic_state); | |
510ca126 AW |
2076 | NEXT (1); |
2077 | } | |
2078 | ||
2079 | /* fluid-ref dst:12 src:12 | |
2080 | * | |
2081 | * Reference the fluid in SRC, and place the value in DST. | |
2082 | */ | |
f90c0554 | 2083 | VM_DEFINE_OP (67, fluid_ref, "fluid-ref", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2084 | { |
2085 | scm_t_uint16 dst, src; | |
2086 | size_t num; | |
2087 | SCM fluid, fluids; | |
2088 | ||
2089 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
2090 | fluid = LOCAL_REF (src); | |
2091 | fluids = SCM_I_DYNAMIC_STATE_FLUIDS (current_thread->dynamic_state); | |
2092 | if (SCM_UNLIKELY (!SCM_FLUID_P (fluid)) | |
2093 | || ((num = SCM_I_FLUID_NUM (fluid)) >= SCM_SIMPLE_VECTOR_LENGTH (fluids))) | |
2094 | { | |
2095 | /* Punt dynstate expansion and error handling to the C proc. */ | |
2096 | SYNC_IP (); | |
2097 | LOCAL_SET (dst, scm_fluid_ref (fluid)); | |
2098 | } | |
2099 | else | |
2100 | { | |
2101 | SCM val = SCM_SIMPLE_VECTOR_REF (fluids, num); | |
2102 | if (scm_is_eq (val, SCM_UNDEFINED)) | |
2103 | val = SCM_I_FLUID_DEFAULT (fluid); | |
2104 | VM_ASSERT (!scm_is_eq (val, SCM_UNDEFINED), | |
2105 | vm_error_unbound_fluid (program, fluid)); | |
2106 | LOCAL_SET (dst, val); | |
2107 | } | |
2108 | ||
2109 | NEXT (1); | |
2110 | } | |
2111 | ||
2112 | /* fluid-set fluid:12 val:12 | |
2113 | * | |
2114 | * Set the value of the fluid in DST to the value in SRC. | |
2115 | */ | |
f90c0554 | 2116 | VM_DEFINE_OP (68, fluid_set, "fluid-set", OP1 (U8_U12_U12)) |
510ca126 AW |
2117 | { |
2118 | scm_t_uint16 a, b; | |
2119 | size_t num; | |
2120 | SCM fluid, fluids; | |
2121 | ||
2122 | SCM_UNPACK_RTL_12_12 (op, a, b); | |
2123 | fluid = LOCAL_REF (a); | |
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 | scm_fluid_set_x (fluid, LOCAL_REF (b)); | |
2131 | } | |
2132 | else | |
2133 | SCM_SIMPLE_VECTOR_SET (fluids, num, LOCAL_REF (b)); | |
2134 | ||
2135 | NEXT (1); | |
2136 | } | |
2137 | ||
2138 | ||
2139 | \f | |
2140 | ||
2141 | /* | |
2142 | * Strings, symbols, and keywords | |
2143 | */ | |
2144 | ||
2145 | /* string-length dst:12 src:12 | |
2146 | * | |
2147 | * Store the length of the string in SRC in DST. | |
2148 | */ | |
f90c0554 | 2149 | VM_DEFINE_OP (69, string_length, "string-length", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2150 | { |
2151 | ARGS1 (str); | |
2152 | if (SCM_LIKELY (scm_is_string (str))) | |
2153 | RETURN (SCM_I_MAKINUM (scm_i_string_length (str))); | |
2154 | else | |
2155 | { | |
2156 | SYNC_IP (); | |
2157 | RETURN (scm_string_length (str)); | |
2158 | } | |
2159 | } | |
2160 | ||
2161 | /* string-ref dst:8 src:8 idx:8 | |
2162 | * | |
2163 | * Fetch the character at position IDX in the string in SRC, and store | |
2164 | * it in DST. | |
2165 | */ | |
f90c0554 | 2166 | VM_DEFINE_OP (70, string_ref, "string-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2167 | { |
2168 | scm_t_signed_bits i = 0; | |
2169 | ARGS2 (str, idx); | |
2170 | if (SCM_LIKELY (scm_is_string (str) | |
2171 | && SCM_I_INUMP (idx) | |
2172 | && ((i = SCM_I_INUM (idx)) >= 0) | |
2173 | && i < scm_i_string_length (str))) | |
2174 | RETURN (SCM_MAKE_CHAR (scm_i_string_ref (str, i))); | |
2175 | else | |
2176 | { | |
2177 | SYNC_IP (); | |
2178 | RETURN (scm_string_ref (str, idx)); | |
2179 | } | |
2180 | } | |
2181 | ||
2182 | /* No string-set! instruction, as there is no good fast path there. */ | |
2183 | ||
2184 | /* string-to-number dst:12 src:12 | |
2185 | * | |
2186 | * Parse a string in SRC to a number, and store in DST. | |
2187 | */ | |
f90c0554 | 2188 | VM_DEFINE_OP (71, string_to_number, "string->number", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2189 | { |
2190 | scm_t_uint16 dst, src; | |
2191 | ||
2192 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
2193 | SYNC_IP (); | |
2194 | LOCAL_SET (dst, | |
2195 | scm_string_to_number (LOCAL_REF (src), | |
2196 | SCM_UNDEFINED /* radix = 10 */)); | |
2197 | NEXT (1); | |
2198 | } | |
2199 | ||
2200 | /* string-to-symbol dst:12 src:12 | |
2201 | * | |
2202 | * Parse a string in SRC to a symbol, and store in DST. | |
2203 | */ | |
f90c0554 | 2204 | VM_DEFINE_OP (72, string_to_symbol, "string->symbol", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2205 | { |
2206 | scm_t_uint16 dst, src; | |
2207 | ||
2208 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
2209 | SYNC_IP (); | |
2210 | LOCAL_SET (dst, scm_string_to_symbol (LOCAL_REF (src))); | |
2211 | NEXT (1); | |
2212 | } | |
2213 | ||
2214 | /* symbol->keyword dst:12 src:12 | |
2215 | * | |
2216 | * Make a keyword from the symbol in SRC, and store it in DST. | |
2217 | */ | |
f90c0554 | 2218 | VM_DEFINE_OP (73, symbol_to_keyword, "symbol->keyword", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2219 | { |
2220 | scm_t_uint16 dst, src; | |
2221 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
2222 | SYNC_IP (); | |
2223 | LOCAL_SET (dst, scm_symbol_to_keyword (LOCAL_REF (src))); | |
2224 | NEXT (1); | |
2225 | } | |
2226 | ||
2227 | \f | |
2228 | ||
2229 | /* | |
2230 | * Pairs | |
2231 | */ | |
2232 | ||
2233 | /* cons dst:8 car:8 cdr:8 | |
2234 | * | |
2235 | * Cons CAR and CDR, and store the result in DST. | |
2236 | */ | |
f90c0554 | 2237 | VM_DEFINE_OP (74, cons, "cons", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2238 | { |
2239 | ARGS2 (x, y); | |
2240 | RETURN (scm_cons (x, y)); | |
2241 | } | |
2242 | ||
2243 | /* car dst:12 src:12 | |
2244 | * | |
2245 | * Place the car of SRC in DST. | |
2246 | */ | |
f90c0554 | 2247 | VM_DEFINE_OP (75, car, "car", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2248 | { |
2249 | ARGS1 (x); | |
2250 | VM_VALIDATE_PAIR (x, "car"); | |
2251 | RETURN (SCM_CAR (x)); | |
2252 | } | |
2253 | ||
2254 | /* cdr dst:12 src:12 | |
2255 | * | |
2256 | * Place the cdr of SRC in DST. | |
2257 | */ | |
f90c0554 | 2258 | VM_DEFINE_OP (76, cdr, "cdr", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2259 | { |
2260 | ARGS1 (x); | |
2261 | VM_VALIDATE_PAIR (x, "cdr"); | |
2262 | RETURN (SCM_CDR (x)); | |
2263 | } | |
2264 | ||
2265 | /* set-car! pair:12 car:12 | |
2266 | * | |
2267 | * Set the car of DST to SRC. | |
2268 | */ | |
f90c0554 | 2269 | VM_DEFINE_OP (77, set_car, "set-car!", OP1 (U8_U12_U12)) |
510ca126 AW |
2270 | { |
2271 | scm_t_uint16 a, b; | |
2272 | SCM x, y; | |
2273 | SCM_UNPACK_RTL_12_12 (op, a, b); | |
2274 | x = LOCAL_REF (a); | |
2275 | y = LOCAL_REF (b); | |
2276 | VM_VALIDATE_PAIR (x, "set-car!"); | |
2277 | SCM_SETCAR (x, y); | |
2278 | NEXT (1); | |
2279 | } | |
2280 | ||
2281 | /* set-cdr! pair:12 cdr:12 | |
2282 | * | |
2283 | * Set the cdr of DST to SRC. | |
2284 | */ | |
f90c0554 | 2285 | VM_DEFINE_OP (78, set_cdr, "set-cdr!", OP1 (U8_U12_U12)) |
510ca126 AW |
2286 | { |
2287 | scm_t_uint16 a, b; | |
2288 | SCM x, y; | |
2289 | SCM_UNPACK_RTL_12_12 (op, a, b); | |
2290 | x = LOCAL_REF (a); | |
2291 | y = LOCAL_REF (b); | |
2292 | VM_VALIDATE_PAIR (x, "set-car!"); | |
2293 | SCM_SETCDR (x, y); | |
2294 | NEXT (1); | |
2295 | } | |
2296 | ||
2297 | ||
2298 | \f | |
2299 | ||
2300 | /* | |
2301 | * Numeric operations | |
2302 | */ | |
2303 | ||
2304 | /* add dst:8 a:8 b:8 | |
2305 | * | |
2306 | * Add A to B, and place the result in DST. | |
2307 | */ | |
f90c0554 | 2308 | VM_DEFINE_OP (79, add, "add", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2309 | { |
2310 | BINARY_INTEGER_OP (+, scm_sum); | |
2311 | } | |
2312 | ||
2313 | /* add1 dst:12 src:12 | |
2314 | * | |
2315 | * Add 1 to the value in SRC, and place the result in DST. | |
2316 | */ | |
f90c0554 | 2317 | VM_DEFINE_OP (80, add1, "add1", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2318 | { |
2319 | ARGS1 (x); | |
2320 | ||
d2295ba5 MW |
2321 | /* Check for overflow. We must avoid overflow in the signed |
2322 | addition below, even if X is not an inum. */ | |
2323 | if (SCM_LIKELY ((scm_t_signed_bits) SCM_UNPACK (x) <= INUM_MAX - INUM_STEP)) | |
510ca126 AW |
2324 | { |
2325 | SCM result; | |
2326 | ||
d2295ba5 MW |
2327 | /* Add 1 to the integer without untagging. */ |
2328 | result = SCM_PACK ((scm_t_signed_bits) SCM_UNPACK (x) + INUM_STEP); | |
510ca126 AW |
2329 | |
2330 | if (SCM_LIKELY (SCM_I_INUMP (result))) | |
2331 | RETURN (result); | |
2332 | } | |
2333 | ||
2334 | SYNC_IP (); | |
2335 | RETURN (scm_sum (x, SCM_I_MAKINUM (1))); | |
2336 | } | |
2337 | ||
2338 | /* sub dst:8 a:8 b:8 | |
2339 | * | |
2340 | * Subtract B from A, and place the result in DST. | |
2341 | */ | |
f90c0554 | 2342 | VM_DEFINE_OP (81, sub, "sub", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2343 | { |
2344 | BINARY_INTEGER_OP (-, scm_difference); | |
2345 | } | |
2346 | ||
2347 | /* sub1 dst:12 src:12 | |
2348 | * | |
2349 | * Subtract 1 from SRC, and place the result in DST. | |
2350 | */ | |
f90c0554 | 2351 | VM_DEFINE_OP (82, sub1, "sub1", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2352 | { |
2353 | ARGS1 (x); | |
2354 | ||
d2295ba5 MW |
2355 | /* Check for overflow. We must avoid overflow in the signed |
2356 | subtraction below, even if X is not an inum. */ | |
2357 | if (SCM_LIKELY ((scm_t_signed_bits) SCM_UNPACK (x) >= INUM_MIN + INUM_STEP)) | |
510ca126 AW |
2358 | { |
2359 | SCM result; | |
2360 | ||
d2295ba5 MW |
2361 | /* Substract 1 from the integer without untagging. */ |
2362 | result = SCM_PACK ((scm_t_signed_bits) SCM_UNPACK (x) - INUM_STEP); | |
510ca126 AW |
2363 | |
2364 | if (SCM_LIKELY (SCM_I_INUMP (result))) | |
2365 | RETURN (result); | |
2366 | } | |
2367 | ||
2368 | SYNC_IP (); | |
2369 | RETURN (scm_difference (x, SCM_I_MAKINUM (1))); | |
2370 | } | |
2371 | ||
2372 | /* mul dst:8 a:8 b:8 | |
2373 | * | |
2374 | * Multiply A and B, and place the result in DST. | |
2375 | */ | |
f90c0554 | 2376 | VM_DEFINE_OP (83, mul, "mul", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2377 | { |
2378 | ARGS2 (x, y); | |
2379 | SYNC_IP (); | |
2380 | RETURN (scm_product (x, y)); | |
2381 | } | |
2382 | ||
2383 | /* div dst:8 a:8 b:8 | |
2384 | * | |
2385 | * Divide A by B, and place the result in DST. | |
2386 | */ | |
f90c0554 | 2387 | VM_DEFINE_OP (84, div, "div", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2388 | { |
2389 | ARGS2 (x, y); | |
2390 | SYNC_IP (); | |
2391 | RETURN (scm_divide (x, y)); | |
2392 | } | |
2393 | ||
2394 | /* quo dst:8 a:8 b:8 | |
2395 | * | |
2396 | * Divide A by B, and place the quotient in DST. | |
2397 | */ | |
f90c0554 | 2398 | VM_DEFINE_OP (85, quo, "quo", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2399 | { |
2400 | ARGS2 (x, y); | |
2401 | SYNC_IP (); | |
2402 | RETURN (scm_quotient (x, y)); | |
2403 | } | |
2404 | ||
2405 | /* rem dst:8 a:8 b:8 | |
2406 | * | |
2407 | * Divide A by B, and place the remainder in DST. | |
2408 | */ | |
f90c0554 | 2409 | VM_DEFINE_OP (86, rem, "rem", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2410 | { |
2411 | ARGS2 (x, y); | |
2412 | SYNC_IP (); | |
2413 | RETURN (scm_remainder (x, y)); | |
2414 | } | |
2415 | ||
2416 | /* mod dst:8 a:8 b:8 | |
2417 | * | |
2418 | * Place the modulo of A by B in DST. | |
2419 | */ | |
f90c0554 | 2420 | VM_DEFINE_OP (87, mod, "mod", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2421 | { |
2422 | ARGS2 (x, y); | |
2423 | SYNC_IP (); | |
2424 | RETURN (scm_modulo (x, y)); | |
2425 | } | |
2426 | ||
2427 | /* ash dst:8 a:8 b:8 | |
2428 | * | |
2429 | * Shift A arithmetically by B bits, and place the result in DST. | |
2430 | */ | |
f90c0554 | 2431 | VM_DEFINE_OP (88, ash, "ash", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2432 | { |
2433 | ARGS2 (x, y); | |
2434 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) | |
2435 | { | |
2436 | if (SCM_I_INUM (y) < 0) | |
2437 | /* Right shift, will be a fixnum. */ | |
0bd65965 MW |
2438 | RETURN (SCM_I_MAKINUM |
2439 | (SCM_SRS (SCM_I_INUM (x), | |
2440 | (-SCM_I_INUM (y) <= SCM_I_FIXNUM_BIT-1) | |
2441 | ? -SCM_I_INUM (y) : SCM_I_FIXNUM_BIT-1))); | |
510ca126 AW |
2442 | else |
2443 | /* Left shift. See comments in scm_ash. */ | |
2444 | { | |
2445 | scm_t_signed_bits nn, bits_to_shift; | |
2446 | ||
2447 | nn = SCM_I_INUM (x); | |
2448 | bits_to_shift = SCM_I_INUM (y); | |
2449 | ||
2450 | if (bits_to_shift < SCM_I_FIXNUM_BIT-1 | |
2451 | && ((scm_t_bits) | |
2452 | (SCM_SRS (nn, (SCM_I_FIXNUM_BIT-1 - bits_to_shift)) + 1) | |
2453 | <= 1)) | |
2454 | RETURN (SCM_I_MAKINUM (nn << bits_to_shift)); | |
2455 | /* fall through */ | |
2456 | } | |
2457 | /* fall through */ | |
2458 | } | |
2459 | SYNC_IP (); | |
2460 | RETURN (scm_ash (x, y)); | |
2461 | } | |
2462 | ||
2463 | /* logand dst:8 a:8 b:8 | |
2464 | * | |
2465 | * Place the bitwise AND of A and B into DST. | |
2466 | */ | |
f90c0554 | 2467 | VM_DEFINE_OP (89, logand, "logand", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2468 | { |
2469 | ARGS2 (x, y); | |
2470 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) | |
e7f64971 MW |
2471 | /* Compute bitwise AND without untagging */ |
2472 | RETURN (SCM_PACK (SCM_UNPACK (x) & SCM_UNPACK (y))); | |
510ca126 AW |
2473 | SYNC_IP (); |
2474 | RETURN (scm_logand (x, y)); | |
2475 | } | |
2476 | ||
2477 | /* logior dst:8 a:8 b:8 | |
2478 | * | |
2479 | * Place the bitwise inclusive OR of A with B in DST. | |
2480 | */ | |
f90c0554 | 2481 | VM_DEFINE_OP (90, logior, "logior", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2482 | { |
2483 | ARGS2 (x, y); | |
2484 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) | |
e7f64971 MW |
2485 | /* Compute bitwise OR without untagging */ |
2486 | RETURN (SCM_PACK (SCM_UNPACK (x) | SCM_UNPACK (y))); | |
510ca126 AW |
2487 | SYNC_IP (); |
2488 | RETURN (scm_logior (x, y)); | |
2489 | } | |
2490 | ||
2491 | /* logxor dst:8 a:8 b:8 | |
2492 | * | |
2493 | * Place the bitwise exclusive OR of A with B in DST. | |
2494 | */ | |
f90c0554 | 2495 | VM_DEFINE_OP (91, logxor, "logxor", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2496 | { |
2497 | ARGS2 (x, y); | |
2498 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) | |
2499 | RETURN (SCM_I_MAKINUM (SCM_I_INUM (x) ^ SCM_I_INUM (y))); | |
2500 | SYNC_IP (); | |
2501 | RETURN (scm_logxor (x, y)); | |
2502 | } | |
2503 | ||
4c906ad5 | 2504 | /* make-vector/immediate dst:8 length:8 init:8 |
607fe5a6 AW |
2505 | * |
2506 | * Make a short vector of known size and write it to DST. The vector | |
2507 | * will have space for LENGTH slots, an immediate value. They will be | |
2508 | * filled with the value in slot INIT. | |
2509 | */ | |
4c906ad5 | 2510 | VM_DEFINE_OP (92, make_vector_immediate, "make-vector/immediate", OP1 (U8_U8_U8_U8) | OP_DST) |
607fe5a6 AW |
2511 | { |
2512 | scm_t_uint8 dst, init; | |
2513 | scm_t_int32 length, n; | |
2514 | SCM val, vector; | |
2515 | ||
2516 | SCM_UNPACK_RTL_8_8_8 (op, dst, length, init); | |
2517 | ||
2518 | val = LOCAL_REF (init); | |
2519 | vector = scm_words (scm_tc7_vector | (length << 8), length + 1); | |
2520 | for (n = 0; n < length; n++) | |
2521 | SCM_SIMPLE_VECTOR_SET (vector, n, val); | |
2522 | LOCAL_SET (dst, vector); | |
2523 | NEXT (1); | |
2524 | } | |
2525 | ||
510ca126 AW |
2526 | /* vector-length dst:12 src:12 |
2527 | * | |
2528 | * Store the length of the vector in SRC in DST. | |
2529 | */ | |
4c906ad5 | 2530 | VM_DEFINE_OP (93, vector_length, "vector-length", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2531 | { |
2532 | ARGS1 (vect); | |
2533 | if (SCM_LIKELY (SCM_I_IS_VECTOR (vect))) | |
2534 | RETURN (SCM_I_MAKINUM (SCM_I_VECTOR_LENGTH (vect))); | |
2535 | else | |
2536 | { | |
2537 | SYNC_IP (); | |
2538 | RETURN (scm_vector_length (vect)); | |
2539 | } | |
2540 | } | |
2541 | ||
2542 | /* vector-ref dst:8 src:8 idx:8 | |
2543 | * | |
2544 | * Fetch the item at position IDX in the vector in SRC, and store it | |
2545 | * in DST. | |
2546 | */ | |
4c906ad5 | 2547 | VM_DEFINE_OP (94, vector_ref, "vector-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2548 | { |
2549 | scm_t_signed_bits i = 0; | |
2550 | ARGS2 (vect, idx); | |
2551 | if (SCM_LIKELY (SCM_I_IS_NONWEAK_VECTOR (vect) | |
2552 | && SCM_I_INUMP (idx) | |
2553 | && ((i = SCM_I_INUM (idx)) >= 0) | |
2554 | && i < SCM_I_VECTOR_LENGTH (vect))) | |
2555 | RETURN (SCM_I_VECTOR_ELTS (vect)[i]); | |
2556 | else | |
2557 | { | |
2558 | SYNC_IP (); | |
2559 | RETURN (scm_vector_ref (vect, idx)); | |
2560 | } | |
2561 | } | |
2562 | ||
4c906ad5 | 2563 | /* vector-ref/immediate dst:8 src:8 idx:8 |
510ca126 AW |
2564 | * |
2565 | * Fill DST with the item IDX elements into the vector at SRC. Useful | |
2566 | * for building data types using vectors. | |
2567 | */ | |
4c906ad5 | 2568 | VM_DEFINE_OP (95, vector_ref_immediate, "vector-ref/immediate", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2569 | { |
2570 | scm_t_uint8 dst, src, idx; | |
2571 | SCM v; | |
2572 | ||
2573 | SCM_UNPACK_RTL_8_8_8 (op, dst, src, idx); | |
2574 | v = LOCAL_REF (src); | |
2575 | if (SCM_LIKELY (SCM_I_IS_NONWEAK_VECTOR (v) | |
2576 | && idx < SCM_I_VECTOR_LENGTH (v))) | |
2577 | LOCAL_SET (dst, SCM_I_VECTOR_ELTS (LOCAL_REF (src))[idx]); | |
2578 | else | |
2579 | LOCAL_SET (dst, scm_c_vector_ref (v, idx)); | |
2580 | NEXT (1); | |
2581 | } | |
2582 | ||
2583 | /* vector-set! dst:8 idx:8 src:8 | |
2584 | * | |
2585 | * Store SRC into the vector DST at index IDX. | |
2586 | */ | |
4c906ad5 | 2587 | VM_DEFINE_OP (96, vector_set, "vector-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
2588 | { |
2589 | scm_t_uint8 dst, idx_var, src; | |
2590 | SCM vect, idx, val; | |
2591 | scm_t_signed_bits i = 0; | |
2592 | ||
2593 | SCM_UNPACK_RTL_8_8_8 (op, dst, idx_var, src); | |
2594 | vect = LOCAL_REF (dst); | |
2595 | idx = LOCAL_REF (idx_var); | |
2596 | val = LOCAL_REF (src); | |
2597 | ||
2598 | if (SCM_LIKELY (SCM_I_IS_NONWEAK_VECTOR (vect) | |
2599 | && SCM_I_INUMP (idx) | |
2600 | && ((i = SCM_I_INUM (idx)) >= 0) | |
2601 | && i < SCM_I_VECTOR_LENGTH (vect))) | |
2602 | SCM_I_VECTOR_WELTS (vect)[i] = val; | |
2603 | else | |
2604 | { | |
2605 | SYNC_IP (); | |
2606 | scm_vector_set_x (vect, idx, val); | |
2607 | } | |
2608 | NEXT (1); | |
2609 | } | |
2610 | ||
4c906ad5 | 2611 | /* vector-set!/immediate dst:8 idx:8 src:8 |
8ba3f20c AW |
2612 | * |
2613 | * Store SRC into the vector DST at index IDX. Here IDX is an | |
2614 | * immediate value. | |
2615 | */ | |
4c906ad5 | 2616 | VM_DEFINE_OP (97, vector_set_immediate, "vector-set!/immediate", OP1 (U8_U8_U8_U8)) |
8ba3f20c AW |
2617 | { |
2618 | scm_t_uint8 dst, idx, src; | |
2619 | SCM vect, val; | |
2620 | ||
2621 | SCM_UNPACK_RTL_8_8_8 (op, dst, idx, src); | |
2622 | vect = LOCAL_REF (dst); | |
2623 | val = LOCAL_REF (src); | |
2624 | ||
2625 | if (SCM_LIKELY (SCM_I_IS_NONWEAK_VECTOR (vect) | |
2626 | && idx < SCM_I_VECTOR_LENGTH (vect))) | |
2627 | SCM_I_VECTOR_WELTS (vect)[idx] = val; | |
2628 | else | |
2629 | { | |
2630 | SYNC_IP (); | |
2631 | scm_vector_set_x (vect, scm_from_uint8 (idx), val); | |
2632 | } | |
2633 | NEXT (1); | |
2634 | } | |
2635 | ||
510ca126 AW |
2636 | |
2637 | \f | |
2638 | ||
2639 | /* | |
2640 | * Structs and GOOPS | |
2641 | */ | |
2642 | ||
2643 | /* struct-vtable dst:12 src:12 | |
2644 | * | |
2645 | * Store the vtable of SRC into DST. | |
2646 | */ | |
4c906ad5 | 2647 | VM_DEFINE_OP (98, struct_vtable, "struct-vtable", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2648 | { |
2649 | ARGS1 (obj); | |
2650 | VM_VALIDATE_STRUCT (obj, "struct_vtable"); | |
2651 | RETURN (SCM_STRUCT_VTABLE (obj)); | |
2652 | } | |
2653 | ||
4c906ad5 | 2654 | /* allocate-struct/immediate dst:8 vtable:8 nfields:8 |
510ca126 | 2655 | * |
14d10292 AW |
2656 | * Allocate a new struct with VTABLE, and place it in DST. The struct |
2657 | * will be constructed with space for NFIELDS fields, which should | |
2658 | * correspond to the field count of the VTABLE. | |
510ca126 | 2659 | */ |
4c906ad5 | 2660 | VM_DEFINE_OP (99, allocate_struct_immediate, "allocate-struct/immediate", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 | 2661 | { |
14d10292 AW |
2662 | scm_t_uint8 dst, vtable, nfields; |
2663 | SCM ret; | |
510ca126 | 2664 | |
14d10292 | 2665 | SCM_UNPACK_RTL_8_8_8 (op, dst, vtable, nfields); |
510ca126 AW |
2666 | |
2667 | SYNC_IP (); | |
14d10292 | 2668 | ret = scm_allocate_struct (LOCAL_REF (vtable), SCM_I_MAKINUM (nfields)); |
510ca126 | 2669 | LOCAL_SET (dst, ret); |
14d10292 AW |
2670 | |
2671 | NEXT (1); | |
510ca126 | 2672 | } |
510ca126 | 2673 | |
4c906ad5 | 2674 | /* struct-ref/immediate dst:8 src:8 idx:8 |
510ca126 AW |
2675 | * |
2676 | * Fetch the item at slot IDX in the struct in SRC, and store it | |
4c906ad5 | 2677 | * in DST. IDX is an immediate unsigned 8-bit value. |
510ca126 | 2678 | */ |
4c906ad5 | 2679 | VM_DEFINE_OP (100, struct_ref_immediate, "struct-ref/immediate", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 | 2680 | { |
4c906ad5 AW |
2681 | scm_t_uint8 dst, src, idx; |
2682 | SCM obj; | |
2683 | ||
2684 | SCM_UNPACK_RTL_8_8_8 (op, dst, src, idx); | |
2685 | ||
2686 | obj = LOCAL_REF (src); | |
510ca126 AW |
2687 | |
2688 | if (SCM_LIKELY (SCM_STRUCTP (obj) | |
2689 | && SCM_STRUCT_VTABLE_FLAG_IS_SET (obj, | |
2690 | SCM_VTABLE_FLAG_SIMPLE) | |
4c906ad5 AW |
2691 | && idx < SCM_STRUCT_DATA_REF (SCM_STRUCT_VTABLE (obj), |
2692 | scm_vtable_index_size))) | |
2693 | RETURN (SCM_STRUCT_SLOT_REF (obj, idx)); | |
510ca126 AW |
2694 | |
2695 | SYNC_IP (); | |
4c906ad5 | 2696 | RETURN (scm_struct_ref (obj, SCM_I_MAKINUM (idx))); |
510ca126 AW |
2697 | } |
2698 | ||
4c906ad5 | 2699 | /* struct-set!/immediate dst:8 idx:8 src:8 |
510ca126 | 2700 | * |
4c906ad5 AW |
2701 | * Store SRC into the struct DST at slot IDX. IDX is an immediate |
2702 | * unsigned 8-bit value. | |
510ca126 | 2703 | */ |
4c906ad5 | 2704 | VM_DEFINE_OP (101, struct_set_immediate, "struct-set!/immediate", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
2705 | { |
2706 | scm_t_uint8 dst, idx, src; | |
4c906ad5 AW |
2707 | SCM obj, val; |
2708 | ||
510ca126 | 2709 | SCM_UNPACK_RTL_8_8_8 (op, dst, idx, src); |
4c906ad5 | 2710 | |
510ca126 | 2711 | obj = LOCAL_REF (dst); |
510ca126 | 2712 | val = LOCAL_REF (src); |
4c906ad5 | 2713 | |
510ca126 AW |
2714 | if (SCM_LIKELY (SCM_STRUCTP (obj) |
2715 | && SCM_STRUCT_VTABLE_FLAG_IS_SET (obj, | |
2716 | SCM_VTABLE_FLAG_SIMPLE) | |
2717 | && SCM_STRUCT_VTABLE_FLAG_IS_SET (obj, | |
2718 | SCM_VTABLE_FLAG_SIMPLE_RW) | |
4c906ad5 AW |
2719 | && idx < SCM_STRUCT_DATA_REF (SCM_STRUCT_VTABLE (obj), |
2720 | scm_vtable_index_size))) | |
510ca126 | 2721 | { |
4c906ad5 AW |
2722 | SCM_STRUCT_SLOT_SET (obj, idx, val); |
2723 | NEXT (1); | |
510ca126 AW |
2724 | } |
2725 | ||
2726 | SYNC_IP (); | |
4c906ad5 | 2727 | scm_struct_set_x (obj, SCM_I_MAKINUM (idx), val); |
510ca126 AW |
2728 | NEXT (1); |
2729 | } | |
2730 | ||
2731 | /* class-of dst:12 type:12 | |
2732 | * | |
2733 | * Store the vtable of SRC into DST. | |
2734 | */ | |
4c906ad5 | 2735 | VM_DEFINE_OP (102, class_of, "class-of", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2736 | { |
2737 | ARGS1 (obj); | |
2738 | if (SCM_INSTANCEP (obj)) | |
2739 | RETURN (SCM_CLASS_OF (obj)); | |
2740 | SYNC_IP (); | |
2741 | RETURN (scm_class_of (obj)); | |
2742 | } | |
2743 | ||
2744 | /* slot-ref dst:8 src:8 idx:8 | |
2745 | * | |
2746 | * Fetch the item at slot IDX in the struct in SRC, and store it in | |
2747 | * DST. Unlike struct-ref, IDX is an 8-bit immediate value, not an | |
2748 | * index into the stack. | |
2749 | */ | |
4c906ad5 | 2750 | VM_DEFINE_OP (103, slot_ref, "slot-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2751 | { |
2752 | scm_t_uint8 dst, src, idx; | |
2753 | SCM_UNPACK_RTL_8_8_8 (op, dst, src, idx); | |
2754 | LOCAL_SET (dst, | |
2755 | SCM_PACK (SCM_STRUCT_DATA (LOCAL_REF (src))[idx])); | |
2756 | NEXT (1); | |
2757 | } | |
2758 | ||
2759 | /* slot-set! dst:8 idx:8 src:8 | |
2760 | * | |
2761 | * Store SRC into slot IDX of the struct in DST. Unlike struct-set!, | |
2762 | * IDX is an 8-bit immediate value, not an index into the stack. | |
2763 | */ | |
4c906ad5 | 2764 | VM_DEFINE_OP (104, slot_set, "slot-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
2765 | { |
2766 | scm_t_uint8 dst, idx, src; | |
2767 | SCM_UNPACK_RTL_8_8_8 (op, dst, idx, src); | |
2768 | SCM_STRUCT_DATA (LOCAL_REF (dst))[idx] = SCM_UNPACK (LOCAL_REF (src)); | |
2769 | NEXT (1); | |
2770 | } | |
2771 | ||
2772 | ||
2773 | \f | |
2774 | ||
2775 | /* | |
2776 | * Arrays, packed uniform arrays, and bytevectors. | |
2777 | */ | |
2778 | ||
2779 | /* load-typed-array dst:8 type:8 shape:8 offset:32 len:32 | |
2780 | * | |
2781 | * Load the contiguous typed array located at OFFSET 32-bit words away | |
2782 | * from the instruction pointer, and store into DST. LEN is a byte | |
2783 | * length. OFFSET is signed. | |
2784 | */ | |
4c906ad5 | 2785 | VM_DEFINE_OP (105, load_typed_array, "load-typed-array", OP3 (U8_U8_U8_U8, N32, U32) | OP_DST) |
510ca126 AW |
2786 | { |
2787 | scm_t_uint8 dst, type, shape; | |
2788 | scm_t_int32 offset; | |
2789 | scm_t_uint32 len; | |
2790 | ||
2791 | SCM_UNPACK_RTL_8_8_8 (op, dst, type, shape); | |
2792 | offset = ip[1]; | |
2793 | len = ip[2]; | |
2794 | SYNC_IP (); | |
2795 | LOCAL_SET (dst, scm_from_contiguous_typed_array (LOCAL_REF (type), | |
2796 | LOCAL_REF (shape), | |
2797 | ip + offset, len)); | |
2798 | NEXT (3); | |
2799 | } | |
2800 | ||
2801 | /* make-array dst:12 type:12 _:8 fill:12 bounds:12 | |
2802 | * | |
2803 | * Make a new array with TYPE, FILL, and BOUNDS, storing it in DST. | |
2804 | */ | |
4c906ad5 | 2805 | VM_DEFINE_OP (106, make_array, "make-array", OP2 (U8_U12_U12, X8_U12_U12) | OP_DST) |
510ca126 AW |
2806 | { |
2807 | scm_t_uint16 dst, type, fill, bounds; | |
2808 | SCM_UNPACK_RTL_12_12 (op, dst, type); | |
2809 | SCM_UNPACK_RTL_12_12 (ip[1], fill, bounds); | |
2810 | SYNC_IP (); | |
2811 | LOCAL_SET (dst, scm_make_typed_array (LOCAL_REF (type), LOCAL_REF (fill), | |
2812 | LOCAL_REF (bounds))); | |
2813 | NEXT (2); | |
2814 | } | |
2815 | ||
2816 | /* bv-u8-ref dst:8 src:8 idx:8 | |
2817 | * bv-s8-ref dst:8 src:8 idx:8 | |
2818 | * bv-u16-ref dst:8 src:8 idx:8 | |
2819 | * bv-s16-ref dst:8 src:8 idx:8 | |
2820 | * bv-u32-ref dst:8 src:8 idx:8 | |
2821 | * bv-s32-ref dst:8 src:8 idx:8 | |
2822 | * bv-u64-ref dst:8 src:8 idx:8 | |
2823 | * bv-s64-ref dst:8 src:8 idx:8 | |
2824 | * bv-f32-ref dst:8 src:8 idx:8 | |
2825 | * bv-f64-ref dst:8 src:8 idx:8 | |
2826 | * | |
2827 | * Fetch the item at byte offset IDX in the bytevector SRC, and store | |
2828 | * it in DST. All accesses use native endianness. | |
2829 | */ | |
2830 | #define BV_FIXABLE_INT_REF(stem, fn_stem, type, size) \ | |
2831 | do { \ | |
2832 | scm_t_signed_bits i; \ | |
2833 | const scm_t_ ## type *int_ptr; \ | |
2834 | ARGS2 (bv, idx); \ | |
2835 | \ | |
2836 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-ref"); \ | |
2837 | i = SCM_I_INUM (idx); \ | |
2838 | int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
2839 | \ | |
2840 | if (SCM_LIKELY (SCM_I_INUMP (idx) \ | |
2841 | && (i >= 0) \ | |
2842 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
2843 | && (ALIGNED_P (int_ptr, scm_t_ ## type)))) \ | |
2844 | RETURN (SCM_I_MAKINUM (*int_ptr)); \ | |
2845 | else \ | |
2846 | { \ | |
2847 | SYNC_IP (); \ | |
2848 | RETURN (scm_bytevector_ ## fn_stem ## _ref (bv, idx)); \ | |
2849 | } \ | |
2850 | } while (0) | |
2851 | ||
2852 | #define BV_INT_REF(stem, type, size) \ | |
2853 | do { \ | |
2854 | scm_t_signed_bits i; \ | |
2855 | const scm_t_ ## type *int_ptr; \ | |
2856 | ARGS2 (bv, idx); \ | |
2857 | \ | |
2858 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-ref"); \ | |
2859 | i = SCM_I_INUM (idx); \ | |
2860 | int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
2861 | \ | |
2862 | if (SCM_LIKELY (SCM_I_INUMP (idx) \ | |
2863 | && (i >= 0) \ | |
2864 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
2865 | && (ALIGNED_P (int_ptr, scm_t_ ## type)))) \ | |
2866 | { \ | |
2867 | scm_t_ ## type x = *int_ptr; \ | |
2868 | if (SCM_FIXABLE (x)) \ | |
2869 | RETURN (SCM_I_MAKINUM (x)); \ | |
2870 | else \ | |
2871 | { \ | |
2872 | SYNC_IP (); \ | |
2873 | RETURN (scm_from_ ## type (x)); \ | |
2874 | } \ | |
2875 | } \ | |
2876 | else \ | |
2877 | { \ | |
2878 | SYNC_IP (); \ | |
2879 | RETURN (scm_bytevector_ ## stem ## _native_ref (bv, idx)); \ | |
2880 | } \ | |
2881 | } while (0) | |
2882 | ||
2883 | #define BV_FLOAT_REF(stem, fn_stem, type, size) \ | |
2884 | do { \ | |
2885 | scm_t_signed_bits i; \ | |
2886 | const type *float_ptr; \ | |
2887 | ARGS2 (bv, idx); \ | |
2888 | \ | |
2889 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-ref"); \ | |
2890 | i = SCM_I_INUM (idx); \ | |
2891 | float_ptr = (type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
2892 | \ | |
2893 | SYNC_IP (); \ | |
2894 | if (SCM_LIKELY (SCM_I_INUMP (idx) \ | |
2895 | && (i >= 0) \ | |
2896 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
2897 | && (ALIGNED_P (float_ptr, type)))) \ | |
2898 | RETURN (scm_from_double (*float_ptr)); \ | |
2899 | else \ | |
2900 | RETURN (scm_bytevector_ ## fn_stem ## _native_ref (bv, idx)); \ | |
2901 | } while (0) | |
2902 | ||
4c906ad5 | 2903 | VM_DEFINE_OP (107, bv_u8_ref, "bv-u8-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2904 | BV_FIXABLE_INT_REF (u8, u8, uint8, 1); |
2905 | ||
4c906ad5 | 2906 | VM_DEFINE_OP (108, bv_s8_ref, "bv-s8-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2907 | BV_FIXABLE_INT_REF (s8, s8, int8, 1); |
2908 | ||
4c906ad5 | 2909 | VM_DEFINE_OP (109, bv_u16_ref, "bv-u16-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2910 | BV_FIXABLE_INT_REF (u16, u16_native, uint16, 2); |
2911 | ||
4c906ad5 | 2912 | VM_DEFINE_OP (110, bv_s16_ref, "bv-s16-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2913 | BV_FIXABLE_INT_REF (s16, s16_native, int16, 2); |
2914 | ||
4c906ad5 | 2915 | VM_DEFINE_OP (111, bv_u32_ref, "bv-u32-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2916 | #if SIZEOF_VOID_P > 4 |
2917 | BV_FIXABLE_INT_REF (u32, u32_native, uint32, 4); | |
2918 | #else | |
2919 | BV_INT_REF (u32, uint32, 4); | |
2920 | #endif | |
2921 | ||
4c906ad5 | 2922 | VM_DEFINE_OP (112, bv_s32_ref, "bv-s32-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2923 | #if SIZEOF_VOID_P > 4 |
2924 | BV_FIXABLE_INT_REF (s32, s32_native, int32, 4); | |
2925 | #else | |
2926 | BV_INT_REF (s32, int32, 4); | |
2927 | #endif | |
2928 | ||
4c906ad5 | 2929 | VM_DEFINE_OP (113, bv_u64_ref, "bv-u64-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2930 | BV_INT_REF (u64, uint64, 8); |
2931 | ||
4c906ad5 | 2932 | VM_DEFINE_OP (114, bv_s64_ref, "bv-s64-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2933 | BV_INT_REF (s64, int64, 8); |
2934 | ||
4c906ad5 | 2935 | VM_DEFINE_OP (115, bv_f32_ref, "bv-f32-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2936 | BV_FLOAT_REF (f32, ieee_single, float, 4); |
2937 | ||
4c906ad5 | 2938 | VM_DEFINE_OP (116, bv_f64_ref, "bv-f64-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2939 | BV_FLOAT_REF (f64, ieee_double, double, 8); |
2940 | ||
2941 | /* bv-u8-set! dst:8 idx:8 src:8 | |
2942 | * bv-s8-set! dst:8 idx:8 src:8 | |
2943 | * bv-u16-set! dst:8 idx:8 src:8 | |
2944 | * bv-s16-set! dst:8 idx:8 src:8 | |
2945 | * bv-u32-set! dst:8 idx:8 src:8 | |
2946 | * bv-s32-set! dst:8 idx:8 src:8 | |
2947 | * bv-u64-set! dst:8 idx:8 src:8 | |
2948 | * bv-s64-set! dst:8 idx:8 src:8 | |
2949 | * bv-f32-set! dst:8 idx:8 src:8 | |
2950 | * bv-f64-set! dst:8 idx:8 src:8 | |
2951 | * | |
2952 | * Store SRC into the bytevector DST at byte offset IDX. Multibyte | |
2953 | * values are written using native endianness. | |
2954 | */ | |
2955 | #define BV_FIXABLE_INT_SET(stem, fn_stem, type, min, max, size) \ | |
2956 | do { \ | |
2957 | scm_t_uint8 dst, idx, src; \ | |
2958 | scm_t_signed_bits i, j = 0; \ | |
2959 | SCM bv, scm_idx, val; \ | |
2960 | scm_t_ ## type *int_ptr; \ | |
2961 | \ | |
2962 | SCM_UNPACK_RTL_8_8_8 (op, dst, idx, src); \ | |
2963 | bv = LOCAL_REF (dst); \ | |
2964 | scm_idx = LOCAL_REF (idx); \ | |
2965 | val = LOCAL_REF (src); \ | |
ecbef966 | 2966 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-set!"); \ |
510ca126 AW |
2967 | i = SCM_I_INUM (scm_idx); \ |
2968 | int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
2969 | \ | |
2970 | if (SCM_LIKELY (SCM_I_INUMP (scm_idx) \ | |
2971 | && (i >= 0) \ | |
2972 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
2973 | && (ALIGNED_P (int_ptr, scm_t_ ## type)) \ | |
2974 | && (SCM_I_INUMP (val)) \ | |
2975 | && ((j = SCM_I_INUM (val)) >= min) \ | |
2976 | && (j <= max))) \ | |
2977 | *int_ptr = (scm_t_ ## type) j; \ | |
2978 | else \ | |
2979 | { \ | |
2980 | SYNC_IP (); \ | |
2981 | scm_bytevector_ ## fn_stem ## _set_x (bv, scm_idx, val); \ | |
2982 | } \ | |
2983 | NEXT (1); \ | |
2984 | } while (0) | |
2985 | ||
2986 | #define BV_INT_SET(stem, type, size) \ | |
2987 | do { \ | |
2988 | scm_t_uint8 dst, idx, src; \ | |
2989 | scm_t_signed_bits i; \ | |
2990 | SCM bv, scm_idx, val; \ | |
2991 | scm_t_ ## type *int_ptr; \ | |
2992 | \ | |
2993 | SCM_UNPACK_RTL_8_8_8 (op, dst, idx, src); \ | |
2994 | bv = LOCAL_REF (dst); \ | |
2995 | scm_idx = LOCAL_REF (idx); \ | |
2996 | val = LOCAL_REF (src); \ | |
ecbef966 | 2997 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-set!"); \ |
510ca126 AW |
2998 | i = SCM_I_INUM (scm_idx); \ |
2999 | int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
3000 | \ | |
3001 | if (SCM_LIKELY (SCM_I_INUMP (scm_idx) \ | |
3002 | && (i >= 0) \ | |
3003 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
3004 | && (ALIGNED_P (int_ptr, scm_t_ ## type)))) \ | |
3005 | *int_ptr = scm_to_ ## type (val); \ | |
3006 | else \ | |
3007 | { \ | |
3008 | SYNC_IP (); \ | |
3009 | scm_bytevector_ ## stem ## _native_set_x (bv, scm_idx, val); \ | |
3010 | } \ | |
3011 | NEXT (1); \ | |
3012 | } while (0) | |
3013 | ||
3014 | #define BV_FLOAT_SET(stem, fn_stem, type, size) \ | |
3015 | do { \ | |
3016 | scm_t_uint8 dst, idx, src; \ | |
3017 | scm_t_signed_bits i; \ | |
3018 | SCM bv, scm_idx, val; \ | |
3019 | type *float_ptr; \ | |
3020 | \ | |
3021 | SCM_UNPACK_RTL_8_8_8 (op, dst, idx, src); \ | |
3022 | bv = LOCAL_REF (dst); \ | |
3023 | scm_idx = LOCAL_REF (idx); \ | |
3024 | val = LOCAL_REF (src); \ | |
ecbef966 | 3025 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-set!"); \ |
510ca126 AW |
3026 | i = SCM_I_INUM (scm_idx); \ |
3027 | float_ptr = (type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
3028 | \ | |
3029 | if (SCM_LIKELY (SCM_I_INUMP (scm_idx) \ | |
3030 | && (i >= 0) \ | |
3031 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
3032 | && (ALIGNED_P (float_ptr, type)))) \ | |
3033 | *float_ptr = scm_to_double (val); \ | |
3034 | else \ | |
3035 | { \ | |
3036 | SYNC_IP (); \ | |
3037 | scm_bytevector_ ## fn_stem ## _native_set_x (bv, scm_idx, val); \ | |
3038 | } \ | |
3039 | NEXT (1); \ | |
3040 | } while (0) | |
3041 | ||
4c906ad5 | 3042 | VM_DEFINE_OP (117, bv_u8_set, "bv-u8-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3043 | BV_FIXABLE_INT_SET (u8, u8, uint8, 0, SCM_T_UINT8_MAX, 1); |
3044 | ||
4c906ad5 | 3045 | VM_DEFINE_OP (118, bv_s8_set, "bv-s8-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3046 | BV_FIXABLE_INT_SET (s8, s8, int8, SCM_T_INT8_MIN, SCM_T_INT8_MAX, 1); |
3047 | ||
4c906ad5 | 3048 | VM_DEFINE_OP (119, bv_u16_set, "bv-u16-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3049 | BV_FIXABLE_INT_SET (u16, u16_native, uint16, 0, SCM_T_UINT16_MAX, 2); |
3050 | ||
4c906ad5 | 3051 | VM_DEFINE_OP (120, bv_s16_set, "bv-s16-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3052 | BV_FIXABLE_INT_SET (s16, s16_native, int16, SCM_T_INT16_MIN, SCM_T_INT16_MAX, 2); |
3053 | ||
4c906ad5 | 3054 | VM_DEFINE_OP (121, bv_u32_set, "bv-u32-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3055 | #if SIZEOF_VOID_P > 4 |
3056 | BV_FIXABLE_INT_SET (u32, u32_native, uint32, 0, SCM_T_UINT32_MAX, 4); | |
3057 | #else | |
3058 | BV_INT_SET (u32, uint32, 4); | |
3059 | #endif | |
3060 | ||
4c906ad5 | 3061 | VM_DEFINE_OP (122, bv_s32_set, "bv-s32-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3062 | #if SIZEOF_VOID_P > 4 |
3063 | BV_FIXABLE_INT_SET (s32, s32_native, int32, SCM_T_INT32_MIN, SCM_T_INT32_MAX, 4); | |
3064 | #else | |
3065 | BV_INT_SET (s32, int32, 4); | |
3066 | #endif | |
3067 | ||
4c906ad5 | 3068 | VM_DEFINE_OP (123, bv_u64_set, "bv-u64-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3069 | BV_INT_SET (u64, uint64, 8); |
3070 | ||
4c906ad5 | 3071 | VM_DEFINE_OP (124, bv_s64_set, "bv-s64-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3072 | BV_INT_SET (s64, int64, 8); |
3073 | ||
4c906ad5 | 3074 | VM_DEFINE_OP (125, bv_f32_set, "bv-f32-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3075 | BV_FLOAT_SET (f32, ieee_single, float, 4); |
3076 | ||
4c906ad5 | 3077 | VM_DEFINE_OP (126, bv_f64_set, "bv-f64-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3078 | BV_FLOAT_SET (f64, ieee_double, double, 8); |
3079 | ||
3080 | END_DISPATCH_SWITCH; | |
3081 | ||
3082 | vm_error_bad_instruction: | |
3083 | vm_error_bad_instruction (op); | |
3084 | ||
3085 | abort (); /* never reached */ | |
3086 | } | |
3087 | ||
3088 | ||
3089 | #undef ABORT_CONTINUATION_HOOK | |
3090 | #undef ALIGNED_P | |
3091 | #undef APPLY_HOOK | |
3092 | #undef ARGS1 | |
3093 | #undef ARGS2 | |
3094 | #undef BEGIN_DISPATCH_SWITCH | |
3095 | #undef BINARY_INTEGER_OP | |
3096 | #undef BR_ARITHMETIC | |
3097 | #undef BR_BINARY | |
3098 | #undef BR_NARGS | |
3099 | #undef BR_UNARY | |
3100 | #undef BV_FIXABLE_INT_REF | |
3101 | #undef BV_FIXABLE_INT_SET | |
3102 | #undef BV_FLOAT_REF | |
3103 | #undef BV_FLOAT_SET | |
3104 | #undef BV_INT_REF | |
3105 | #undef BV_INT_SET | |
3106 | #undef CACHE_REGISTER | |
3107 | #undef CHECK_OVERFLOW | |
3108 | #undef END_DISPATCH_SWITCH | |
3109 | #undef FREE_VARIABLE_REF | |
3110 | #undef INIT | |
3111 | #undef INUM_MAX | |
3112 | #undef INUM_MIN | |
3113 | #undef LOCAL_REF | |
3114 | #undef LOCAL_SET | |
3115 | #undef NEXT | |
3116 | #undef NEXT_HOOK | |
3117 | #undef NEXT_JUMP | |
3118 | #undef POP_CONTINUATION_HOOK | |
3119 | #undef PUSH_CONTINUATION_HOOK | |
3120 | #undef RESTORE_CONTINUATION_HOOK | |
3121 | #undef RETURN | |
3122 | #undef RETURN_ONE_VALUE | |
3123 | #undef RETURN_VALUE_LIST | |
3124 | #undef RUN_HOOK | |
3125 | #undef RUN_HOOK0 | |
3126 | #undef SYNC_ALL | |
3127 | #undef SYNC_BEFORE_GC | |
3128 | #undef SYNC_IP | |
3129 | #undef SYNC_REGISTER | |
3130 | #undef VARIABLE_BOUNDP | |
3131 | #undef VARIABLE_REF | |
3132 | #undef VARIABLE_SET | |
3133 | #undef VM_CHECK_FREE_VARIABLE | |
3134 | #undef VM_CHECK_OBJECT | |
3135 | #undef VM_CHECK_UNDERFLOW | |
3136 | #undef VM_DEFINE_OP | |
3137 | #undef VM_INSTRUCTION_TO_LABEL | |
3138 | #undef VM_USE_HOOKS | |
3139 | #undef VM_VALIDATE_BYTEVECTOR | |
3140 | #undef VM_VALIDATE_PAIR | |
3141 | #undef VM_VALIDATE_STRUCT | |
3142 | ||
3143 | /* | |
3144 | (defun renumber-ops () | |
3145 | "start from top of buffer and renumber 'VM_DEFINE_FOO (\n' sequences" | |
3146 | (interactive "") | |
3147 | (save-excursion | |
3148 | (let ((counter -1)) (goto-char (point-min)) | |
3149 | (while (re-search-forward "^ *VM_DEFINE_[^ ]+ (\\([^,]+\\)," (point-max) t) | |
3150 | (replace-match | |
3151 | (number-to-string (setq counter (1+ counter))) | |
3152 | t t nil 1))))) | |
3153 | (renumber-ops) | |
3154 | */ | |
17e90c5e KN |
3155 | /* |
3156 | Local Variables: | |
3157 | c-file-style: "gnu" | |
3158 | End: | |
3159 | */ |