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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) | |
87 | #define POP_CONTINUATION_HOOK(vals, n) \ | |
88 | RUN_HOOK (SCM_VM_POP_CONTINUATION_HOOK, vals, n) | |
89 | #define NEXT_HOOK() \ | |
90 | RUN_HOOK0 (SCM_VM_NEXT_HOOK) | |
91 | #define ABORT_CONTINUATION_HOOK(vals, n) \ | |
92 | RUN_HOOK (SCM_VM_ABORT_CONTINUATION_HOOK, vals, n) | |
93 | #define RESTORE_CONTINUATION_HOOK() \ | |
94 | RUN_HOOK0 (SCM_VM_RESTORE_CONTINUATION_HOOK) | |
95 | ||
96 | #define VM_HANDLE_INTERRUPTS \ | |
97 | SCM_ASYNC_TICK_WITH_CODE (current_thread, SYNC_REGISTER ()) | |
98 | ||
99 | ||
510ca126 AW |
100 | /* Virtual Machine |
101 | ||
102 | This is Guile's new virtual machine. When I say "new", I mean | |
103 | relative to the current virtual machine. At some point it will | |
104 | become "the" virtual machine, and we'll delete this paragraph. As | |
105 | such, the rest of the comments speak as if there's only one VM. | |
7396d216 AW |
106 | In difference from the old VM, local 0 is the procedure, and the |
107 | first argument is local 1. At some point in the future we should | |
108 | change the fp to point to the procedure and not to local 1. | |
510ca126 AW |
109 | |
110 | <more overview here> | |
111 | */ | |
112 | ||
113 | ||
114 | /* The VM has three state bits: the instruction pointer (IP), the frame | |
115 | pointer (FP), and the top-of-stack pointer (SP). We cache the first | |
116 | two of these in machine registers, local to the VM, because they are | |
117 | used extensively by the VM. As the SP is used more by code outside | |
118 | the VM than by the VM itself, we don't bother caching it locally. | |
119 | ||
120 | Since the FP changes infrequently, relative to the IP, we keep vp->fp | |
121 | in sync with the local FP. This would be a big lose for the IP, | |
122 | though, so instead of updating vp->ip all the time, we call SYNC_IP | |
123 | whenever we would need to know the IP of the top frame. In practice, | |
124 | we need to SYNC_IP whenever we call out of the VM to a function that | |
125 | would like to walk the stack, perhaps as the result of an | |
126 | exception. */ | |
127 | ||
128 | #define SYNC_IP() \ | |
129 | vp->ip = (scm_t_uint8 *) (ip) | |
130 | ||
131 | #define SYNC_REGISTER() \ | |
132 | SYNC_IP() | |
133 | #define SYNC_BEFORE_GC() /* Only SP and FP needed to trace GC */ | |
134 | #define SYNC_ALL() /* FP already saved */ \ | |
135 | SYNC_IP() | |
136 | ||
137 | #define CHECK_OVERFLOW(sp) \ | |
138 | do { \ | |
139 | if (SCM_UNLIKELY ((sp) >= stack_limit)) \ | |
140 | vm_error_stack_overflow (vp); \ | |
141 | } while (0) | |
142 | ||
143 | /* Reserve stack space for a frame. Will check that there is sufficient | |
7396d216 | 144 | stack space for N locals, including the procedure, in addition to |
f8085163 | 145 | 2 words to set up the next frame. Invoke after preparing the new |
510ca126 AW |
146 | frame and setting the fp and ip. */ |
147 | #define ALLOC_FRAME(n) \ | |
148 | do { \ | |
7396d216 | 149 | SCM *new_sp = vp->sp = fp - 1 + n - 1; \ |
f8085163 | 150 | CHECK_OVERFLOW (new_sp + 3); \ |
510ca126 AW |
151 | } while (0) |
152 | ||
153 | /* Reset the current frame to hold N locals. Used when we know that no | |
154 | stack expansion is needed. */ | |
155 | #define RESET_FRAME(n) \ | |
156 | do { \ | |
7396d216 | 157 | vp->sp = fp - 2 + n; \ |
510ca126 AW |
158 | } while (0) |
159 | ||
160 | /* Compute the number of locals in the frame. This is equal to the | |
7396d216 AW |
161 | number of actual arguments when a function is first called, plus |
162 | one for the function. */ | |
510ca126 | 163 | #define FRAME_LOCALS_COUNT() \ |
7396d216 | 164 | (vp->sp + 1 - (fp - 1)) |
510ca126 AW |
165 | |
166 | /* Restore registers after returning from a frame. */ | |
167 | #define RESTORE_FRAME() \ | |
168 | do { \ | |
169 | } while (0) | |
170 | ||
171 | ||
172 | #define CACHE_REGISTER() \ | |
173 | do { \ | |
174 | ip = (scm_t_uint32 *) vp->ip; \ | |
175 | fp = vp->fp; \ | |
176 | } while (0) | |
177 | ||
178 | #ifdef HAVE_LABELS_AS_VALUES | |
179 | # define BEGIN_DISPATCH_SWITCH /* */ | |
180 | # define END_DISPATCH_SWITCH /* */ | |
181 | # define NEXT(n) \ | |
182 | do \ | |
183 | { \ | |
184 | ip += n; \ | |
185 | NEXT_HOOK (); \ | |
186 | op = *ip; \ | |
187 | goto *jump_table[op & 0xff]; \ | |
188 | } \ | |
189 | while (0) | |
190 | # define VM_DEFINE_OP(opcode, tag, name, meta) \ | |
191 | op_##tag: | |
192 | #else | |
193 | # define BEGIN_DISPATCH_SWITCH \ | |
194 | vm_start: \ | |
195 | NEXT_HOOK (); \ | |
196 | op = *ip; \ | |
197 | switch (op & 0xff) \ | |
198 | { | |
199 | # define END_DISPATCH_SWITCH \ | |
200 | default: \ | |
201 | goto vm_error_bad_instruction; \ | |
202 | } | |
203 | # define NEXT(n) \ | |
204 | do \ | |
205 | { \ | |
206 | ip += n; \ | |
207 | goto vm_start; \ | |
208 | } \ | |
209 | while (0) | |
210 | # define VM_DEFINE_OP(opcode, tag, name, meta) \ | |
211 | op_##tag: \ | |
212 | case opcode: | |
213 | #endif | |
214 | ||
8cff7f54 AW |
215 | #define LOCAL_REF(i) SCM_FRAME_VARIABLE ((fp - 1), i) |
216 | #define LOCAL_SET(i,o) SCM_FRAME_VARIABLE ((fp - 1), i) = o | |
510ca126 AW |
217 | |
218 | #define VARIABLE_REF(v) SCM_VARIABLE_REF (v) | |
219 | #define VARIABLE_SET(v,o) SCM_VARIABLE_SET (v, o) | |
220 | #define VARIABLE_BOUNDP(v) (!scm_is_eq (VARIABLE_REF (v), SCM_UNDEFINED)) | |
510ca126 AW |
221 | |
222 | #define RETURN_ONE_VALUE(ret) \ | |
223 | do { \ | |
224 | SCM val = ret; \ | |
225 | SCM *sp = SCM_FRAME_LOWER_ADDRESS (fp); \ | |
226 | VM_HANDLE_INTERRUPTS; \ | |
227 | ip = SCM_FRAME_RTL_RETURN_ADDRESS (fp); \ | |
510ca126 | 228 | fp = vp->fp = SCM_FRAME_DYNAMIC_LINK (fp); \ |
af95414f AW |
229 | /* Clear frame. */ \ |
230 | sp[0] = SCM_BOOL_F; \ | |
231 | sp[1] = SCM_BOOL_F; \ | |
af95414f | 232 | /* Leave proc. */ \ |
f8085163 AW |
233 | sp[3] = val; \ |
234 | vp->sp = sp + 3; \ | |
510ca126 AW |
235 | POP_CONTINUATION_HOOK (sp, 1); \ |
236 | NEXT (0); \ | |
237 | } while (0) | |
238 | ||
239 | /* While we could generate the list-unrolling code here, it's fine for | |
240 | now to just tail-call (apply values vals). */ | |
241 | #define RETURN_VALUE_LIST(vals_) \ | |
242 | do { \ | |
243 | SCM vals = vals_; \ | |
244 | VM_HANDLE_INTERRUPTS; \ | |
486013d6 AW |
245 | fp[-1] = vm_builtin_apply; \ |
246 | fp[0] = vm_builtin_values; \ | |
510ca126 | 247 | fp[1] = vals; \ |
7396d216 | 248 | RESET_FRAME (3); \ |
486013d6 | 249 | ip = (scm_t_uint32 *) vm_builtin_apply_code; \ |
adb8d905 | 250 | goto op_tail_apply; \ |
510ca126 AW |
251 | } while (0) |
252 | ||
253 | #define BR_NARGS(rel) \ | |
d2bd8fa8 | 254 | scm_t_uint32 expected; \ |
510ca126 AW |
255 | SCM_UNPACK_RTL_24 (op, expected); \ |
256 | if (FRAME_LOCALS_COUNT() rel expected) \ | |
257 | { \ | |
258 | scm_t_int32 offset = ip[1]; \ | |
259 | offset >>= 8; /* Sign-extending shift. */ \ | |
260 | NEXT (offset); \ | |
261 | } \ | |
262 | NEXT (2) | |
263 | ||
264 | #define BR_UNARY(x, exp) \ | |
265 | scm_t_uint32 test; \ | |
266 | SCM x; \ | |
267 | SCM_UNPACK_RTL_24 (op, test); \ | |
268 | x = LOCAL_REF (test); \ | |
269 | if ((ip[1] & 0x1) ? !(exp) : (exp)) \ | |
270 | { \ | |
271 | scm_t_int32 offset = ip[1]; \ | |
272 | offset >>= 8; /* Sign-extending shift. */ \ | |
273 | if (offset < 0) \ | |
274 | VM_HANDLE_INTERRUPTS; \ | |
275 | NEXT (offset); \ | |
276 | } \ | |
277 | NEXT (2) | |
278 | ||
279 | #define BR_BINARY(x, y, exp) \ | |
280 | scm_t_uint16 a, b; \ | |
281 | SCM x, y; \ | |
282 | SCM_UNPACK_RTL_12_12 (op, a, b); \ | |
283 | x = LOCAL_REF (a); \ | |
284 | y = LOCAL_REF (b); \ | |
285 | if ((ip[1] & 0x1) ? !(exp) : (exp)) \ | |
286 | { \ | |
287 | scm_t_int32 offset = ip[1]; \ | |
288 | offset >>= 8; /* Sign-extending shift. */ \ | |
289 | if (offset < 0) \ | |
290 | VM_HANDLE_INTERRUPTS; \ | |
291 | NEXT (offset); \ | |
292 | } \ | |
293 | NEXT (2) | |
294 | ||
295 | #define BR_ARITHMETIC(crel,srel) \ | |
296 | { \ | |
297 | scm_t_uint16 a, b; \ | |
298 | SCM x, y; \ | |
299 | SCM_UNPACK_RTL_12_12 (op, a, b); \ | |
300 | x = LOCAL_REF (a); \ | |
301 | y = LOCAL_REF (b); \ | |
302 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) \ | |
303 | { \ | |
304 | scm_t_signed_bits x_bits = SCM_UNPACK (x); \ | |
305 | scm_t_signed_bits y_bits = SCM_UNPACK (y); \ | |
af95414f | 306 | if ((ip[1] & 0x1) ? !(x_bits crel y_bits) : (x_bits crel y_bits)) \ |
510ca126 AW |
307 | { \ |
308 | scm_t_int32 offset = ip[1]; \ | |
309 | offset >>= 8; /* Sign-extending shift. */ \ | |
310 | if (offset < 0) \ | |
311 | VM_HANDLE_INTERRUPTS; \ | |
312 | NEXT (offset); \ | |
313 | } \ | |
314 | NEXT (2); \ | |
315 | } \ | |
316 | else \ | |
317 | { \ | |
af95414f | 318 | SCM res; \ |
510ca126 | 319 | SYNC_IP (); \ |
af95414f AW |
320 | res = srel (x, y); \ |
321 | if ((ip[1] & 0x1) ? scm_is_false (res) : scm_is_true (res)) \ | |
510ca126 AW |
322 | { \ |
323 | scm_t_int32 offset = ip[1]; \ | |
324 | offset >>= 8; /* Sign-extending shift. */ \ | |
325 | if (offset < 0) \ | |
326 | VM_HANDLE_INTERRUPTS; \ | |
327 | NEXT (offset); \ | |
328 | } \ | |
329 | NEXT (2); \ | |
330 | } \ | |
331 | } | |
332 | ||
333 | #define ARGS1(a1) \ | |
334 | scm_t_uint16 dst, src; \ | |
335 | SCM a1; \ | |
336 | SCM_UNPACK_RTL_12_12 (op, dst, src); \ | |
337 | a1 = LOCAL_REF (src) | |
338 | #define ARGS2(a1, a2) \ | |
339 | scm_t_uint8 dst, src1, src2; \ | |
340 | SCM a1, a2; \ | |
341 | SCM_UNPACK_RTL_8_8_8 (op, dst, src1, src2); \ | |
342 | a1 = LOCAL_REF (src1); \ | |
343 | a2 = LOCAL_REF (src2) | |
344 | #define RETURN(x) \ | |
345 | do { LOCAL_SET (dst, x); NEXT (1); } while (0) | |
346 | ||
347 | /* The maximum/minimum tagged integers. */ | |
d2295ba5 MW |
348 | #define INUM_MAX \ |
349 | ((scm_t_signed_bits) SCM_UNPACK (SCM_I_MAKINUM (SCM_MOST_POSITIVE_FIXNUM))) | |
350 | #define INUM_MIN \ | |
351 | ((scm_t_signed_bits) SCM_UNPACK (SCM_I_MAKINUM (SCM_MOST_NEGATIVE_FIXNUM))) | |
352 | #define INUM_STEP \ | |
353 | ((scm_t_signed_bits) SCM_UNPACK (SCM_INUM1) \ | |
354 | - (scm_t_signed_bits) SCM_UNPACK (SCM_INUM0)) | |
510ca126 AW |
355 | |
356 | #define BINARY_INTEGER_OP(CFUNC,SFUNC) \ | |
357 | { \ | |
358 | ARGS2 (x, y); \ | |
359 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) \ | |
360 | { \ | |
361 | scm_t_int64 n = SCM_I_INUM (x) CFUNC SCM_I_INUM (y); \ | |
362 | if (SCM_FIXABLE (n)) \ | |
363 | RETURN (SCM_I_MAKINUM (n)); \ | |
364 | } \ | |
365 | SYNC_IP (); \ | |
366 | RETURN (SFUNC (x, y)); \ | |
367 | } | |
368 | ||
369 | #define VM_VALIDATE_PAIR(x, proc) \ | |
370 | VM_ASSERT (scm_is_pair (x), vm_error_not_a_pair (proc, x)) | |
371 | ||
372 | #define VM_VALIDATE_STRUCT(obj, proc) \ | |
373 | VM_ASSERT (SCM_STRUCTP (obj), vm_error_not_a_pair (proc, obj)) | |
374 | ||
375 | #define VM_VALIDATE_BYTEVECTOR(x, proc) \ | |
376 | VM_ASSERT (SCM_BYTEVECTOR_P (x), vm_error_not_a_bytevector (proc, x)) | |
377 | ||
378 | /* Return true (non-zero) if PTR has suitable alignment for TYPE. */ | |
379 | #define ALIGNED_P(ptr, type) \ | |
380 | ((scm_t_uintptr) (ptr) % alignof_type (type) == 0) | |
381 | ||
382 | static SCM | |
383 | RTL_VM_NAME (SCM vm, SCM program, SCM *argv, size_t nargs_) | |
384 | { | |
385 | /* Instruction pointer: A pointer to the opcode that is currently | |
386 | running. */ | |
387 | register scm_t_uint32 *ip IP_REG; | |
388 | ||
389 | /* Frame pointer: A pointer into the stack, off of which we index | |
390 | arguments and local variables. Pushed at function calls, popped on | |
391 | returns. */ | |
392 | register SCM *fp FP_REG; | |
393 | ||
394 | /* Current opcode: A cache of *ip. */ | |
395 | register scm_t_uint32 op; | |
396 | ||
397 | /* Cached variables. */ | |
398 | struct scm_vm *vp = SCM_VM_DATA (vm); | |
399 | SCM *stack_limit = vp->stack_limit; /* stack limit address */ | |
400 | scm_i_thread *current_thread = SCM_I_CURRENT_THREAD; | |
401 | scm_i_jmp_buf registers; /* used for prompts */ | |
402 | ||
403 | #ifdef HAVE_LABELS_AS_VALUES | |
404 | static const void **jump_table_pointer = NULL; | |
405 | register const void **jump_table JT_REG; | |
406 | ||
407 | if (SCM_UNLIKELY (!jump_table_pointer)) | |
408 | { | |
409 | int i; | |
410 | jump_table_pointer = malloc (SCM_VM_NUM_INSTRUCTIONS * sizeof (void*)); | |
411 | for (i = 0; i < SCM_VM_NUM_INSTRUCTIONS; i++) | |
412 | jump_table_pointer[i] = &&vm_error_bad_instruction; | |
413 | #define INIT(opcode, tag, name, meta) jump_table_pointer[opcode] = &&op_##tag; | |
414 | FOR_EACH_VM_OPERATION(INIT); | |
415 | #undef INIT | |
416 | } | |
417 | ||
418 | /* Attempt to keep JUMP_TABLE_POINTER in a register. This saves one | |
419 | load instruction at each instruction dispatch. */ | |
420 | jump_table = jump_table_pointer; | |
421 | #endif | |
422 | ||
423 | if (SCM_I_SETJMP (registers)) | |
424 | { | |
425 | /* Non-local return. The values are on the stack, on a new frame | |
426 | set up to call `values' to return the values to the handler. | |
427 | Cache the VM registers back from the vp, and dispatch to the | |
428 | body of `values'. | |
429 | ||
430 | Note, at this point, we must assume that any variable local to | |
431 | vm_engine that can be assigned *has* been assigned. So we need | |
432 | to pull all our state back from the ip/fp/sp. | |
433 | */ | |
434 | CACHE_REGISTER (); | |
d691ac20 | 435 | ABORT_CONTINUATION_HOOK (fp, FRAME_LOCALS_COUNT () - 1); |
510ca126 AW |
436 | NEXT (0); |
437 | } | |
438 | ||
439 | /* Load previous VM registers. */ | |
440 | CACHE_REGISTER (); | |
441 | ||
442 | VM_HANDLE_INTERRUPTS; | |
443 | ||
444 | /* Initialization */ | |
445 | { | |
446 | SCM *base; | |
447 | ||
f8085163 AW |
448 | /* Check that we have enough space: 3 words for the boot |
449 | continuation, 3 + nargs for the procedure application, and 3 for | |
510ca126 AW |
450 | setting up a new frame. */ |
451 | base = vp->sp + 1; | |
f8085163 | 452 | CHECK_OVERFLOW (vp->sp + 3 + 3 + nargs_ + 3); |
510ca126 AW |
453 | |
454 | /* Since it's possible to receive the arguments on the stack itself, | |
455 | and indeed the regular VM invokes us that way, shuffle up the | |
456 | arguments first. */ | |
457 | { | |
458 | int i; | |
459 | for (i = nargs_ - 1; i >= 0; i--) | |
f8085163 | 460 | base[6 + i] = argv[i]; |
510ca126 AW |
461 | } |
462 | ||
463 | /* Initial frame, saving previous fp and ip, with the boot | |
464 | continuation. */ | |
465 | base[0] = SCM_PACK (fp); /* dynamic link */ | |
f8085163 AW |
466 | base[1] = SCM_PACK (ip); /* ra */ |
467 | base[2] = rtl_boot_continuation; | |
468 | fp = &base[3]; | |
af95414f | 469 | ip = (scm_t_uint32 *) rtl_boot_continuation_code; |
510ca126 AW |
470 | |
471 | /* MV-call frame, function & arguments */ | |
f8085163 AW |
472 | base[3] = SCM_PACK (fp); /* dynamic link */ |
473 | base[4] = SCM_PACK (ip); /* ra */ | |
474 | base[5] = program; | |
475 | fp = vp->fp = &base[6]; | |
7396d216 | 476 | RESET_FRAME (nargs_ + 1); |
510ca126 AW |
477 | } |
478 | ||
479 | apply: | |
480 | while (!SCM_RTL_PROGRAM_P (SCM_FRAME_PROGRAM (fp))) | |
481 | { | |
510ca126 AW |
482 | SCM proc = SCM_FRAME_PROGRAM (fp); |
483 | ||
484 | if (SCM_STRUCTP (proc) && SCM_STRUCT_APPLICABLE_P (proc)) | |
485 | { | |
486 | fp[-1] = SCM_STRUCT_PROCEDURE (proc); | |
487 | continue; | |
488 | } | |
489 | if (SCM_HAS_TYP7 (proc, scm_tc7_smob) && SCM_SMOB_APPLICABLE_P (proc)) | |
490 | { | |
491 | scm_t_uint32 n = FRAME_LOCALS_COUNT(); | |
492 | ||
9d87158f AW |
493 | /* Shuffle args up. */ |
494 | RESET_FRAME (n + 1); | |
510ca126 AW |
495 | while (n--) |
496 | LOCAL_SET (n + 1, LOCAL_REF (n)); | |
510ca126 | 497 | |
9d87158f | 498 | LOCAL_SET (0, SCM_SMOB_DESCRIPTOR (proc).apply_trampoline); |
510ca126 AW |
499 | continue; |
500 | } | |
501 | ||
502 | SYNC_IP(); | |
503 | vm_error_wrong_type_apply (proc); | |
510ca126 AW |
504 | } |
505 | ||
506 | /* Let's go! */ | |
507 | ip = SCM_RTL_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); | |
508 | NEXT (0); | |
509 | ||
510 | BEGIN_DISPATCH_SWITCH; | |
511 | ||
512 | ||
513 | \f | |
514 | ||
515 | /* | |
516 | * Call and return | |
517 | */ | |
518 | ||
519 | /* halt _:24 | |
520 | * | |
af95414f | 521 | * Bring the VM to a halt, returning all the values from the stack. |
510ca126 AW |
522 | */ |
523 | VM_DEFINE_OP (0, halt, "halt", OP1 (U8_X24)) | |
524 | { | |
f8085163 | 525 | scm_t_uint32 nvals = FRAME_LOCALS_COUNT() - 4; |
af95414f | 526 | SCM ret; |
510ca126 | 527 | |
f8085163 | 528 | /* Boot closure in r0, empty frame in r1/r2, proc in r3, values from r4. */ |
510ca126 | 529 | |
af95414f | 530 | if (nvals == 1) |
f8085163 | 531 | ret = LOCAL_REF (4); |
af95414f AW |
532 | else |
533 | { | |
534 | scm_t_uint32 n; | |
535 | ret = SCM_EOL; | |
536 | SYNC_BEFORE_GC(); | |
537 | for (n = nvals; n > 0; n--) | |
f8085163 | 538 | ret = scm_cons (LOCAL_REF (4 + n - 1), ret); |
af95414f AW |
539 | ret = scm_values (ret); |
540 | } | |
510ca126 AW |
541 | |
542 | vp->ip = SCM_FRAME_RETURN_ADDRESS (fp); | |
543 | vp->sp = SCM_FRAME_LOWER_ADDRESS (fp) - 1; | |
544 | vp->fp = SCM_FRAME_DYNAMIC_LINK (fp); | |
545 | ||
af95414f | 546 | return ret; |
286a0fb3 AW |
547 | } |
548 | ||
af95414f | 549 | /* call proc:24 _:8 nlocals:24 |
286a0fb3 | 550 | * |
af95414f AW |
551 | * Call a procedure. PROC is the local corresponding to a procedure. |
552 | * The three values below PROC will be overwritten by the saved call | |
553 | * frame data. The new frame will have space for NLOCALS locals: one | |
554 | * for the procedure, and the rest for the arguments which should | |
555 | * already have been pushed on. | |
510ca126 | 556 | * |
af95414f AW |
557 | * When the call returns, execution proceeds with the next |
558 | * instruction. There may be any number of values on the return | |
559 | * stack; the precise number can be had by subtracting the address of | |
560 | * PROC from the post-call SP. | |
510ca126 | 561 | */ |
af95414f | 562 | VM_DEFINE_OP (1, call, "call", OP2 (U8_U24, X8_U24)) |
510ca126 | 563 | { |
af95414f | 564 | scm_t_uint32 proc, nlocals; |
510ca126 AW |
565 | SCM *old_fp = fp; |
566 | ||
af95414f AW |
567 | SCM_UNPACK_RTL_24 (op, proc); |
568 | SCM_UNPACK_RTL_24 (ip[1], nlocals); | |
510ca126 AW |
569 | |
570 | VM_HANDLE_INTERRUPTS; | |
571 | ||
af95414f | 572 | fp = vp->fp = old_fp + proc; |
510ca126 | 573 | SCM_FRAME_SET_DYNAMIC_LINK (fp, old_fp); |
286a0fb3 | 574 | SCM_FRAME_SET_RTL_RETURN_ADDRESS (fp, ip + 2); |
510ca126 | 575 | |
af95414f AW |
576 | RESET_FRAME (nlocals); |
577 | ||
510ca126 AW |
578 | PUSH_CONTINUATION_HOOK (); |
579 | APPLY_HOOK (); | |
580 | ||
581 | if (SCM_UNLIKELY (!SCM_RTL_PROGRAM_P (SCM_FRAME_PROGRAM (fp)))) | |
582 | goto apply; | |
583 | ||
584 | ip = SCM_RTL_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); | |
585 | NEXT (0); | |
586 | } | |
587 | ||
af95414f | 588 | /* tail-call nlocals:24 |
510ca126 | 589 | * |
af95414f | 590 | * Tail-call a procedure. Requires that the procedure and all of the |
486013d6 AW |
591 | * arguments have already been shuffled into position. Will reset the |
592 | * frame to NLOCALS. | |
510ca126 | 593 | */ |
af95414f | 594 | VM_DEFINE_OP (2, tail_call, "tail-call", OP1 (U8_U24)) |
510ca126 | 595 | { |
af95414f AW |
596 | scm_t_uint32 nlocals; |
597 | ||
598 | SCM_UNPACK_RTL_24 (op, nlocals); | |
510ca126 AW |
599 | |
600 | VM_HANDLE_INTERRUPTS; | |
601 | ||
af95414f | 602 | RESET_FRAME (nlocals); |
486013d6 AW |
603 | |
604 | APPLY_HOOK (); | |
605 | ||
606 | if (SCM_UNLIKELY (!SCM_RTL_PROGRAM_P (SCM_FRAME_PROGRAM (fp)))) | |
607 | goto apply; | |
608 | ||
609 | ip = SCM_RTL_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); | |
610 | NEXT (0); | |
611 | } | |
612 | ||
613 | /* tail-call/shuffle from:24 | |
614 | * | |
615 | * Tail-call a procedure. The procedure should already be set to slot | |
616 | * 0. The rest of the args are taken from the frame, starting at | |
617 | * FROM, shuffled down to start at slot 0. This is part of the | |
618 | * implementation of the call-with-values builtin. | |
619 | */ | |
620 | VM_DEFINE_OP (3, tail_call_shuffle, "tail-call/shuffle", OP1 (U8_U24)) | |
621 | { | |
622 | scm_t_uint32 n, from, nlocals; | |
623 | ||
624 | SCM_UNPACK_RTL_24 (op, from); | |
625 | ||
626 | VM_HANDLE_INTERRUPTS; | |
627 | ||
628 | VM_ASSERT (from > 0, abort ()); | |
629 | nlocals = FRAME_LOCALS_COUNT (); | |
630 | ||
631 | for (n = 0; from + n < nlocals; n++) | |
632 | LOCAL_SET (n + 1, LOCAL_REF (from + n)); | |
633 | ||
634 | RESET_FRAME (n + 1); | |
635 | ||
510ca126 AW |
636 | APPLY_HOOK (); |
637 | ||
638 | if (SCM_UNLIKELY (!SCM_RTL_PROGRAM_P (SCM_FRAME_PROGRAM (fp)))) | |
639 | goto apply; | |
640 | ||
641 | ip = SCM_RTL_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); | |
642 | NEXT (0); | |
643 | } | |
644 | ||
af95414f | 645 | /* receive dst:12 proc:12 _:8 nlocals:24 |
510ca126 | 646 | * |
af95414f AW |
647 | * Receive a single return value from a call whose procedure was in |
648 | * PROC, asserting that the call actually returned at least one | |
649 | * value. Afterwards, resets the frame to NLOCALS locals. | |
510ca126 | 650 | */ |
486013d6 | 651 | VM_DEFINE_OP (4, receive, "receive", OP2 (U8_U12_U12, X8_U24) | OP_DST) |
510ca126 | 652 | { |
af95414f AW |
653 | scm_t_uint16 dst, proc; |
654 | scm_t_uint32 nlocals; | |
655 | SCM_UNPACK_RTL_12_12 (op, dst, proc); | |
656 | SCM_UNPACK_RTL_24 (ip[1], nlocals); | |
657 | VM_ASSERT (FRAME_LOCALS_COUNT () > proc + 1, vm_error_no_values ()); | |
658 | LOCAL_SET (dst, LOCAL_REF (proc + 1)); | |
659 | RESET_FRAME (nlocals); | |
660 | NEXT (2); | |
661 | } | |
510ca126 | 662 | |
82f4bac4 | 663 | /* receive-values proc:24 allow-extra?:1 _:7 nvalues:24 |
af95414f AW |
664 | * |
665 | * Receive a return of multiple values from a call whose procedure was | |
666 | * in PROC. If fewer than NVALUES values were returned, signal an | |
82f4bac4 AW |
667 | * error. Unless ALLOW-EXTRA? is true, require that the number of |
668 | * return values equals NVALUES exactly. After receive-values has | |
669 | * run, the values can be copied down via `mov'. | |
af95414f | 670 | */ |
486013d6 | 671 | VM_DEFINE_OP (5, receive_values, "receive-values", OP2 (U8_U24, B1_X7_U24)) |
af95414f AW |
672 | { |
673 | scm_t_uint32 proc, nvalues; | |
674 | SCM_UNPACK_RTL_24 (op, proc); | |
675 | SCM_UNPACK_RTL_24 (ip[1], nvalues); | |
82f4bac4 AW |
676 | if (ip[1] & 0x1) |
677 | VM_ASSERT (FRAME_LOCALS_COUNT () > proc + nvalues, | |
678 | vm_error_not_enough_values ()); | |
679 | else | |
186b56c4 | 680 | VM_ASSERT (FRAME_LOCALS_COUNT () == proc + 1 + nvalues, |
82f4bac4 | 681 | vm_error_wrong_number_of_values (nvalues)); |
af95414f | 682 | NEXT (2); |
510ca126 AW |
683 | } |
684 | ||
685 | /* return src:24 | |
686 | * | |
687 | * Return a value. | |
688 | */ | |
486013d6 | 689 | VM_DEFINE_OP (6, return, "return", OP1 (U8_U24)) |
510ca126 AW |
690 | { |
691 | scm_t_uint32 src; | |
692 | SCM_UNPACK_RTL_24 (op, src); | |
693 | RETURN_ONE_VALUE (LOCAL_REF (src)); | |
694 | } | |
695 | ||
84cc4127 | 696 | /* return-values _:24 |
510ca126 AW |
697 | * |
698 | * Return a number of values from a call frame. This opcode | |
699 | * corresponds to an application of `values' in tail position. As | |
af95414f AW |
700 | * with tail calls, we expect that the values have already been |
701 | * shuffled down to a contiguous array starting at slot 1. | |
84cc4127 | 702 | * We also expect the frame has already been reset. |
510ca126 | 703 | */ |
486013d6 | 704 | VM_DEFINE_OP (7, return_values, "return-values", OP1 (U8_X24)) |
510ca126 | 705 | { |
84cc4127 | 706 | scm_t_uint32 nvalues _GL_UNUSED = FRAME_LOCALS_COUNT(); |
af95414f AW |
707 | SCM *base = fp; |
708 | ||
af95414f | 709 | VM_HANDLE_INTERRUPTS; |
840ec334 | 710 | ip = SCM_FRAME_RTL_RETURN_ADDRESS (fp); |
af95414f AW |
711 | fp = vp->fp = SCM_FRAME_DYNAMIC_LINK (fp); |
712 | ||
713 | /* Clear stack frame. */ | |
714 | base[-2] = SCM_BOOL_F; | |
715 | base[-3] = SCM_BOOL_F; | |
af95414f AW |
716 | |
717 | POP_CONTINUATION_HOOK (base, nvalues); | |
718 | ||
719 | NEXT (0); | |
510ca126 AW |
720 | } |
721 | ||
722 | ||
723 | \f | |
724 | ||
725 | /* | |
726 | * Specialized call stubs | |
727 | */ | |
728 | ||
729 | /* subr-call ptr-idx:24 | |
730 | * | |
731 | * Call a subr, passing all locals in this frame as arguments. Fetch | |
732 | * the foreign pointer from PTR-IDX, a free variable. Return from the | |
733 | * calling frame. This instruction is part of the trampolines | |
734 | * created in gsubr.c, and is not generated by the compiler. | |
735 | */ | |
486013d6 | 736 | VM_DEFINE_OP (8, subr_call, "subr-call", OP1 (U8_U24)) |
510ca126 AW |
737 | { |
738 | scm_t_uint32 ptr_idx; | |
739 | SCM pointer, ret; | |
740 | SCM (*subr)(); | |
741 | ||
742 | SCM_UNPACK_RTL_24 (op, ptr_idx); | |
743 | ||
7396d216 | 744 | pointer = SCM_RTL_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (0), ptr_idx); |
510ca126 AW |
745 | subr = SCM_POINTER_VALUE (pointer); |
746 | ||
747 | VM_HANDLE_INTERRUPTS; | |
748 | SYNC_IP (); | |
749 | ||
8d23c436 | 750 | switch (FRAME_LOCALS_COUNT () - 1) |
510ca126 AW |
751 | { |
752 | case 0: | |
753 | ret = subr (); | |
754 | break; | |
755 | case 1: | |
756 | ret = subr (fp[0]); | |
757 | break; | |
758 | case 2: | |
759 | ret = subr (fp[0], fp[1]); | |
760 | break; | |
761 | case 3: | |
762 | ret = subr (fp[0], fp[1], fp[2]); | |
763 | break; | |
764 | case 4: | |
765 | ret = subr (fp[0], fp[1], fp[2], fp[3]); | |
766 | break; | |
767 | case 5: | |
768 | ret = subr (fp[0], fp[1], fp[2], fp[3], fp[4]); | |
769 | break; | |
770 | case 6: | |
771 | ret = subr (fp[0], fp[1], fp[2], fp[3], fp[4], fp[5]); | |
772 | break; | |
773 | case 7: | |
774 | ret = subr (fp[0], fp[1], fp[2], fp[3], fp[4], fp[5], fp[6]); | |
775 | break; | |
776 | case 8: | |
777 | ret = subr (fp[0], fp[1], fp[2], fp[3], fp[4], fp[5], fp[6], fp[7]); | |
778 | break; | |
779 | case 9: | |
780 | ret = subr (fp[0], fp[1], fp[2], fp[3], fp[4], fp[5], fp[6], fp[7], fp[8]); | |
781 | break; | |
782 | case 10: | |
783 | ret = subr (fp[0], fp[1], fp[2], fp[3], fp[4], fp[5], fp[6], fp[7], fp[8], fp[9]); | |
784 | break; | |
785 | default: | |
786 | abort (); | |
787 | } | |
788 | ||
789 | // NULLSTACK_FOR_NONLOCAL_EXIT (); | |
790 | ||
791 | if (SCM_UNLIKELY (SCM_VALUESP (ret))) | |
792 | /* multiple values returned to continuation */ | |
793 | RETURN_VALUE_LIST (scm_struct_ref (ret, SCM_INUM0)); | |
794 | else | |
795 | RETURN_ONE_VALUE (ret); | |
796 | } | |
797 | ||
798 | /* foreign-call cif-idx:12 ptr-idx:12 | |
799 | * | |
800 | * Call a foreign function. Fetch the CIF and foreign pointer from | |
801 | * CIF-IDX and PTR-IDX, both free variables. Return from the calling | |
802 | * frame. Arguments are taken from the stack. This instruction is | |
803 | * part of the trampolines created by the FFI, and is not generated by | |
804 | * the compiler. | |
805 | */ | |
486013d6 | 806 | VM_DEFINE_OP (9, foreign_call, "foreign-call", OP1 (U8_U12_U12)) |
510ca126 AW |
807 | { |
808 | scm_t_uint16 cif_idx, ptr_idx; | |
7396d216 | 809 | SCM closure, cif, pointer, ret; |
510ca126 AW |
810 | |
811 | SCM_UNPACK_RTL_12_12 (op, cif_idx, ptr_idx); | |
812 | ||
7396d216 AW |
813 | closure = LOCAL_REF (0); |
814 | cif = SCM_RTL_PROGRAM_FREE_VARIABLE_REF (closure, cif_idx); | |
815 | pointer = SCM_RTL_PROGRAM_FREE_VARIABLE_REF (closure, ptr_idx); | |
510ca126 AW |
816 | |
817 | SYNC_IP (); | |
818 | VM_HANDLE_INTERRUPTS; | |
819 | ||
820 | // FIXME: separate args | |
821 | ret = scm_i_foreign_call (scm_cons (cif, pointer), fp); | |
822 | ||
823 | // NULLSTACK_FOR_NONLOCAL_EXIT (); | |
824 | ||
825 | if (SCM_UNLIKELY (SCM_VALUESP (ret))) | |
826 | /* multiple values returned to continuation */ | |
827 | RETURN_VALUE_LIST (scm_struct_ref (ret, SCM_INUM0)); | |
828 | else | |
829 | RETURN_ONE_VALUE (ret); | |
830 | } | |
831 | ||
832 | /* continuation-call contregs:24 | |
833 | * | |
834 | * Return to a continuation, nonlocally. The arguments to the | |
835 | * continuation are taken from the stack. CONTREGS is a free variable | |
836 | * containing the reified continuation. This instruction is part of | |
837 | * the implementation of undelimited continuations, and is not | |
838 | * generated by the compiler. | |
839 | */ | |
486013d6 | 840 | VM_DEFINE_OP (10, continuation_call, "continuation-call", OP1 (U8_U24)) |
510ca126 AW |
841 | { |
842 | SCM contregs; | |
843 | scm_t_uint32 contregs_idx; | |
844 | ||
845 | SCM_UNPACK_RTL_24 (op, contregs_idx); | |
846 | ||
7396d216 AW |
847 | contregs = |
848 | SCM_RTL_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (0), contregs_idx); | |
510ca126 AW |
849 | |
850 | SYNC_IP (); | |
851 | scm_i_check_continuation (contregs); | |
852 | vm_return_to_continuation (scm_i_contregs_vm (contregs), | |
853 | scm_i_contregs_vm_cont (contregs), | |
d691ac20 | 854 | FRAME_LOCALS_COUNT () - 1, fp); |
510ca126 AW |
855 | scm_i_reinstate_continuation (contregs); |
856 | ||
857 | /* no NEXT */ | |
858 | abort (); | |
859 | } | |
860 | ||
861 | /* compose-continuation cont:24 | |
862 | * | |
863 | * Compose a partial continution with the current continuation. The | |
864 | * arguments to the continuation are taken from the stack. CONT is a | |
865 | * free variable containing the reified continuation. This | |
866 | * instruction is part of the implementation of partial continuations, | |
867 | * and is not generated by the compiler. | |
868 | */ | |
486013d6 | 869 | VM_DEFINE_OP (11, compose_continuation, "compose-continuation", OP1 (U8_U24)) |
510ca126 AW |
870 | { |
871 | SCM vmcont; | |
872 | scm_t_uint32 cont_idx; | |
873 | ||
874 | SCM_UNPACK_RTL_24 (op, cont_idx); | |
d76de871 | 875 | vmcont = SCM_RTL_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (0), cont_idx); |
510ca126 AW |
876 | |
877 | SYNC_IP (); | |
878 | VM_ASSERT (SCM_VM_CONT_REWINDABLE_P (vmcont), | |
879 | vm_error_continuation_not_rewindable (vmcont)); | |
d691ac20 | 880 | vm_reinstate_partial_continuation (vm, vmcont, FRAME_LOCALS_COUNT () - 1, fp, |
510ca126 AW |
881 | ¤t_thread->dynstack, |
882 | ®isters); | |
883 | CACHE_REGISTER (); | |
884 | NEXT (0); | |
885 | } | |
886 | ||
adb8d905 | 887 | /* tail-apply _:24 |
510ca126 AW |
888 | * |
889 | * Tail-apply the procedure in local slot 0 to the rest of the | |
890 | * arguments. This instruction is part of the implementation of | |
891 | * `apply', and is not generated by the compiler. | |
892 | */ | |
486013d6 | 893 | VM_DEFINE_OP (12, tail_apply, "tail-apply", OP1 (U8_X24)) |
510ca126 | 894 | { |
e93c0430 | 895 | int i, list_idx, list_len, nlocals; |
510ca126 AW |
896 | SCM list; |
897 | ||
898 | VM_HANDLE_INTERRUPTS; | |
899 | ||
e93c0430 AW |
900 | nlocals = FRAME_LOCALS_COUNT (); |
901 | // At a minimum, there should be apply, f, and the list. | |
902 | VM_ASSERT (nlocals >= 3, abort ()); | |
903 | list_idx = nlocals - 1; | |
510ca126 AW |
904 | list = LOCAL_REF (list_idx); |
905 | list_len = scm_ilength (list); | |
906 | ||
907 | VM_ASSERT (list_len >= 0, vm_error_apply_to_non_list (list)); | |
908 | ||
e93c0430 AW |
909 | nlocals = nlocals - 2 + list_len; |
910 | ALLOC_FRAME (nlocals); | |
510ca126 | 911 | |
e93c0430 AW |
912 | for (i = 1; i < list_idx; i++) |
913 | LOCAL_SET (i - 1, LOCAL_REF (i)); | |
510ca126 AW |
914 | |
915 | /* Null out these slots, just in case there are less than 2 elements | |
916 | in the list. */ | |
7396d216 AW |
917 | LOCAL_SET (list_idx - 1, SCM_UNDEFINED); |
918 | LOCAL_SET (list_idx, SCM_UNDEFINED); | |
510ca126 AW |
919 | |
920 | for (i = 0; i < list_len; i++, list = SCM_CDR (list)) | |
7396d216 | 921 | LOCAL_SET (list_idx - 1 + i, SCM_CAR (list)); |
510ca126 AW |
922 | |
923 | APPLY_HOOK (); | |
924 | ||
925 | if (SCM_UNLIKELY (!SCM_RTL_PROGRAM_P (SCM_FRAME_PROGRAM (fp)))) | |
926 | goto apply; | |
927 | ||
928 | ip = SCM_RTL_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); | |
929 | NEXT (0); | |
930 | } | |
931 | ||
932 | /* call/cc _:24 | |
933 | * | |
934 | * Capture the current continuation, and tail-apply the procedure in | |
d691ac20 | 935 | * local slot 1 to it. This instruction is part of the implementation |
510ca126 AW |
936 | * of `call/cc', and is not generated by the compiler. |
937 | */ | |
486013d6 | 938 | VM_DEFINE_OP (13, call_cc, "call/cc", OP1 (U8_X24)) |
510ca126 AW |
939 | { |
940 | SCM vm_cont, cont; | |
941 | scm_t_dynstack *dynstack; | |
d691ac20 | 942 | int first; |
510ca126 AW |
943 | |
944 | VM_HANDLE_INTERRUPTS; | |
945 | ||
946 | SYNC_IP (); | |
947 | dynstack = scm_dynstack_capture_all (¤t_thread->dynstack); | |
948 | vm_cont = scm_i_vm_capture_stack (vp->stack_base, | |
949 | SCM_FRAME_DYNAMIC_LINK (fp), | |
950 | SCM_FRAME_LOWER_ADDRESS (fp) - 1, | |
951 | SCM_FRAME_RETURN_ADDRESS (fp), | |
510ca126 AW |
952 | dynstack, |
953 | 0); | |
d691ac20 AW |
954 | /* FIXME: Seems silly to capture the registers here, when they are |
955 | already captured in the registers local, which here we are | |
956 | copying out to the heap; and likewise, the setjmp(®isters) | |
957 | code already has the non-local return handler. But oh | |
958 | well! */ | |
959 | cont = scm_i_make_continuation (&first, vm, vm_cont); | |
960 | ||
961 | if (first) | |
962 | { | |
963 | LOCAL_SET (0, LOCAL_REF (1)); | |
964 | LOCAL_SET (1, cont); | |
965 | RESET_FRAME (2); | |
510ca126 | 966 | |
d691ac20 | 967 | APPLY_HOOK (); |
510ca126 | 968 | |
d691ac20 AW |
969 | if (SCM_UNLIKELY (!SCM_RTL_PROGRAM_P (SCM_FRAME_PROGRAM (fp)))) |
970 | goto apply; | |
510ca126 | 971 | |
d691ac20 AW |
972 | ip = SCM_RTL_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); |
973 | NEXT (0); | |
974 | } | |
975 | else | |
976 | { | |
977 | CACHE_REGISTER (); | |
978 | ABORT_CONTINUATION_HOOK (fp, FRAME_LOCALS_COUNT () - 1); | |
979 | NEXT (0); | |
980 | } | |
510ca126 | 981 | } |
510ca126 | 982 | |
486013d6 AW |
983 | /* abort _:24 |
984 | * | |
985 | * Abort to a prompt handler. The tag is expected in r1, and the rest | |
986 | * of the values in the frame are returned to the prompt handler. | |
987 | * This corresponds to a tail application of abort-to-prompt. | |
988 | */ | |
989 | VM_DEFINE_OP (14, abort, "abort", OP1 (U8_X24)) | |
990 | { | |
991 | scm_t_uint32 nlocals = FRAME_LOCALS_COUNT (); | |
992 | ||
993 | ASSERT (nlocals >= 2); | |
186b56c4 AW |
994 | /* FIXME: Really we should capture the caller's registers. Until |
995 | then, manually advance the IP so that when the prompt resumes, | |
996 | it continues with the next instruction. */ | |
997 | ip++; | |
486013d6 AW |
998 | SYNC_IP (); |
999 | vm_abort (vm, LOCAL_REF (1), nlocals - 2, &LOCAL_REF (2), | |
186b56c4 | 1000 | SCM_EOL, &LOCAL_REF (0), ®isters); |
486013d6 AW |
1001 | |
1002 | /* vm_abort should not return */ | |
1003 | abort (); | |
1004 | } | |
1005 | ||
1006 | /* builtin-ref dst:12 idx:12 | |
1007 | * | |
1008 | * Load a builtin stub by index into DST. | |
1009 | */ | |
1010 | VM_DEFINE_OP (15, builtin_ref, "builtin-ref", OP1 (U8_U12_U12) | OP_DST) | |
1011 | { | |
1012 | scm_t_uint16 dst, idx; | |
1013 | ||
1014 | SCM_UNPACK_RTL_12_12 (op, dst, idx); | |
1015 | LOCAL_SET (dst, scm_vm_builtin_ref (idx)); | |
1016 | ||
1017 | NEXT (1); | |
1018 | } | |
1019 | ||
510ca126 AW |
1020 | |
1021 | \f | |
1022 | ||
1023 | /* | |
1024 | * Function prologues | |
1025 | */ | |
1026 | ||
1027 | /* br-if-nargs-ne expected:24 _:8 offset:24 | |
1028 | * br-if-nargs-lt expected:24 _:8 offset:24 | |
1029 | * br-if-nargs-gt expected:24 _:8 offset:24 | |
1030 | * | |
1031 | * If the number of actual arguments is not equal, less than, or greater | |
1032 | * than EXPECTED, respectively, add OFFSET, a signed 24-bit number, to | |
1033 | * the current instruction pointer. | |
1034 | */ | |
486013d6 | 1035 | VM_DEFINE_OP (16, br_if_nargs_ne, "br-if-nargs-ne", OP2 (U8_U24, X8_L24)) |
510ca126 AW |
1036 | { |
1037 | BR_NARGS (!=); | |
1038 | } | |
486013d6 | 1039 | VM_DEFINE_OP (17, br_if_nargs_lt, "br-if-nargs-lt", OP2 (U8_U24, X8_L24)) |
510ca126 AW |
1040 | { |
1041 | BR_NARGS (<); | |
1042 | } | |
486013d6 | 1043 | VM_DEFINE_OP (18, br_if_nargs_gt, "br-if-nargs-gt", OP2 (U8_U24, X8_L24)) |
510ca126 AW |
1044 | { |
1045 | BR_NARGS (>); | |
1046 | } | |
1047 | ||
1048 | /* assert-nargs-ee expected:24 | |
1049 | * assert-nargs-ge expected:24 | |
1050 | * assert-nargs-le expected:24 | |
1051 | * | |
1052 | * If the number of actual arguments is not ==, >=, or <= EXPECTED, | |
1053 | * respectively, signal an error. | |
1054 | */ | |
486013d6 | 1055 | VM_DEFINE_OP (19, assert_nargs_ee, "assert-nargs-ee", OP1 (U8_U24)) |
510ca126 AW |
1056 | { |
1057 | scm_t_uint32 expected; | |
1058 | SCM_UNPACK_RTL_24 (op, expected); | |
1059 | VM_ASSERT (FRAME_LOCALS_COUNT () == expected, | |
1060 | vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp))); | |
1061 | NEXT (1); | |
1062 | } | |
486013d6 | 1063 | VM_DEFINE_OP (20, assert_nargs_ge, "assert-nargs-ge", OP1 (U8_U24)) |
510ca126 AW |
1064 | { |
1065 | scm_t_uint32 expected; | |
1066 | SCM_UNPACK_RTL_24 (op, expected); | |
1067 | VM_ASSERT (FRAME_LOCALS_COUNT () >= expected, | |
1068 | vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp))); | |
1069 | NEXT (1); | |
1070 | } | |
486013d6 | 1071 | VM_DEFINE_OP (21, assert_nargs_le, "assert-nargs-le", OP1 (U8_U24)) |
510ca126 AW |
1072 | { |
1073 | scm_t_uint32 expected; | |
1074 | SCM_UNPACK_RTL_24 (op, expected); | |
1075 | VM_ASSERT (FRAME_LOCALS_COUNT () <= expected, | |
1076 | vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp))); | |
1077 | NEXT (1); | |
1078 | } | |
1079 | ||
af95414f | 1080 | /* alloc-frame nlocals:24 |
510ca126 AW |
1081 | * |
1082 | * Ensure that there is space on the stack for NLOCALS local variables, | |
1083 | * setting them all to SCM_UNDEFINED, except those nargs values that | |
7396d216 | 1084 | * were passed as arguments and procedure. |
510ca126 | 1085 | */ |
486013d6 | 1086 | VM_DEFINE_OP (22, alloc_frame, "alloc-frame", OP1 (U8_U24)) |
510ca126 AW |
1087 | { |
1088 | scm_t_uint32 nlocals, nargs; | |
1089 | SCM_UNPACK_RTL_24 (op, nlocals); | |
1090 | ||
1091 | nargs = FRAME_LOCALS_COUNT (); | |
1092 | ALLOC_FRAME (nlocals); | |
1093 | while (nlocals-- > nargs) | |
1094 | LOCAL_SET (nlocals, SCM_UNDEFINED); | |
1095 | ||
1096 | NEXT (1); | |
1097 | } | |
1098 | ||
af95414f AW |
1099 | /* reset-frame nlocals:24 |
1100 | * | |
1101 | * Like alloc-frame, but doesn't check that the stack is big enough. | |
1102 | * Used to reset the frame size to something less than the size that | |
1103 | * was previously set via alloc-frame. | |
1104 | */ | |
486013d6 | 1105 | VM_DEFINE_OP (23, reset_frame, "reset-frame", OP1 (U8_U24)) |
af95414f AW |
1106 | { |
1107 | scm_t_uint32 nlocals; | |
1108 | SCM_UNPACK_RTL_24 (op, nlocals); | |
1109 | RESET_FRAME (nlocals); | |
1110 | NEXT (1); | |
1111 | } | |
1112 | ||
510ca126 AW |
1113 | /* assert-nargs-ee/locals expected:12 nlocals:12 |
1114 | * | |
1115 | * Equivalent to a sequence of assert-nargs-ee and reserve-locals. The | |
1116 | * number of locals reserved is EXPECTED + NLOCALS. | |
1117 | */ | |
486013d6 | 1118 | VM_DEFINE_OP (24, assert_nargs_ee_locals, "assert-nargs-ee/locals", OP1 (U8_U12_U12)) |
510ca126 AW |
1119 | { |
1120 | scm_t_uint16 expected, nlocals; | |
1121 | SCM_UNPACK_RTL_12_12 (op, expected, nlocals); | |
1122 | VM_ASSERT (FRAME_LOCALS_COUNT () == expected, | |
1123 | vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp))); | |
1124 | ALLOC_FRAME (expected + nlocals); | |
1125 | while (nlocals--) | |
1126 | LOCAL_SET (expected + nlocals, SCM_UNDEFINED); | |
1127 | ||
1128 | NEXT (1); | |
1129 | } | |
1130 | ||
f90c0554 AW |
1131 | /* br-if-npos-gt nreq:24 _:8 npos:24 _:8 offset:24 |
1132 | * | |
1133 | * Find the first positional argument after NREQ. If it is greater | |
1134 | * than NPOS, jump to OFFSET. | |
1135 | * | |
1136 | * This instruction is only emitted for functions with multiple | |
1137 | * clauses, and an earlier clause has keywords and no rest arguments. | |
1138 | * See "Case-lambda" in the manual, for more on how case-lambda | |
1139 | * chooses the clause to apply. | |
1140 | */ | |
1141 | VM_DEFINE_OP (25, br_if_npos_gt, "br-if-npos-gt", OP3 (U8_U24, X8_U24, X8_L24)) | |
1142 | { | |
1143 | scm_t_uint32 nreq, npos; | |
1144 | ||
1145 | SCM_UNPACK_RTL_24 (op, nreq); | |
1146 | SCM_UNPACK_RTL_24 (ip[1], npos); | |
1147 | ||
1148 | /* We can only have too many positionals if there are more | |
1149 | arguments than NPOS. */ | |
1150 | if (FRAME_LOCALS_COUNT() > npos) | |
1151 | { | |
1152 | scm_t_uint32 n; | |
1153 | for (n = nreq; n < npos; n++) | |
1154 | if (scm_is_keyword (LOCAL_REF (n))) | |
1155 | break; | |
1156 | if (n == npos && !scm_is_keyword (LOCAL_REF (n))) | |
1157 | { | |
1158 | scm_t_int32 offset = ip[2]; | |
1159 | offset >>= 8; /* Sign-extending shift. */ | |
1160 | NEXT (offset); | |
1161 | } | |
1162 | } | |
1163 | NEXT (3); | |
1164 | } | |
1165 | ||
510ca126 AW |
1166 | /* bind-kwargs nreq:24 allow-other-keys:1 has-rest:1 _:6 nreq-and-opt:24 |
1167 | * _:8 ntotal:24 kw-offset:32 | |
1168 | * | |
1169 | * Find the last positional argument, and shuffle all the rest above | |
1170 | * NTOTAL. Initialize the intervening locals to SCM_UNDEFINED. Then | |
1171 | * load the constant at KW-OFFSET words from the current IP, and use it | |
1172 | * to bind keyword arguments. If HAS-REST, collect all shuffled | |
1173 | * arguments into a list, and store it in NREQ-AND-OPT. Finally, clear | |
1174 | * the arguments that we shuffled up. | |
1175 | * | |
1176 | * A macro-mega-instruction. | |
1177 | */ | |
f90c0554 | 1178 | VM_DEFINE_OP (26, bind_kwargs, "bind-kwargs", OP4 (U8_U24, U8_U24, X8_U24, N32)) |
510ca126 AW |
1179 | { |
1180 | scm_t_uint32 nreq, nreq_and_opt, ntotal, npositional, nkw, n, nargs; | |
1181 | scm_t_int32 kw_offset; | |
1182 | scm_t_bits kw_bits; | |
1183 | SCM kw; | |
1184 | char allow_other_keys, has_rest; | |
1185 | ||
1186 | SCM_UNPACK_RTL_24 (op, nreq); | |
1187 | allow_other_keys = ip[1] & 0x1; | |
1188 | has_rest = ip[1] & 0x2; | |
1189 | SCM_UNPACK_RTL_24 (ip[1], nreq_and_opt); | |
1190 | SCM_UNPACK_RTL_24 (ip[2], ntotal); | |
1191 | kw_offset = ip[3]; | |
1192 | kw_bits = (scm_t_bits) (ip + kw_offset); | |
1193 | VM_ASSERT (!(kw_bits & 0x7), abort()); | |
1194 | kw = SCM_PACK (kw_bits); | |
1195 | ||
1196 | nargs = FRAME_LOCALS_COUNT (); | |
1197 | ||
1198 | /* look in optionals for first keyword or last positional */ | |
1199 | /* starting after the last required positional arg */ | |
1200 | npositional = nreq; | |
1201 | while (/* while we have args */ | |
1202 | npositional < nargs | |
1203 | /* and we still have positionals to fill */ | |
1204 | && npositional < nreq_and_opt | |
1205 | /* and we haven't reached a keyword yet */ | |
1206 | && !scm_is_keyword (LOCAL_REF (npositional))) | |
1207 | /* bind this optional arg (by leaving it in place) */ | |
1208 | npositional++; | |
1209 | nkw = nargs - npositional; | |
1210 | /* shuffle non-positional arguments above ntotal */ | |
1211 | ALLOC_FRAME (ntotal + nkw); | |
1212 | n = nkw; | |
1213 | while (n--) | |
1214 | LOCAL_SET (ntotal + n, LOCAL_REF (npositional + n)); | |
1215 | /* and fill optionals & keyword args with SCM_UNDEFINED */ | |
1216 | n = npositional; | |
1217 | while (n < ntotal) | |
1218 | LOCAL_SET (n++, SCM_UNDEFINED); | |
1219 | ||
1220 | VM_ASSERT (has_rest || (nkw % 2) == 0, | |
1221 | vm_error_kwargs_length_not_even (SCM_FRAME_PROGRAM (fp))); | |
1222 | ||
1223 | /* Now bind keywords, in the order given. */ | |
1224 | for (n = 0; n < nkw; n++) | |
1225 | if (scm_is_keyword (LOCAL_REF (ntotal + n))) | |
1226 | { | |
1227 | SCM walk; | |
1228 | for (walk = kw; scm_is_pair (walk); walk = SCM_CDR (walk)) | |
1229 | if (scm_is_eq (SCM_CAAR (walk), LOCAL_REF (ntotal + n))) | |
1230 | { | |
1231 | SCM si = SCM_CDAR (walk); | |
1232 | LOCAL_SET (SCM_I_INUMP (si) ? SCM_I_INUM (si) : scm_to_uint32 (si), | |
1233 | LOCAL_REF (ntotal + n + 1)); | |
1234 | break; | |
1235 | } | |
1236 | VM_ASSERT (scm_is_pair (walk) || allow_other_keys, | |
28d5d253 MW |
1237 | vm_error_kwargs_unrecognized_keyword (SCM_FRAME_PROGRAM (fp), |
1238 | LOCAL_REF (ntotal + n))); | |
510ca126 AW |
1239 | n++; |
1240 | } | |
1241 | else | |
28d5d253 MW |
1242 | VM_ASSERT (has_rest, vm_error_kwargs_invalid_keyword (SCM_FRAME_PROGRAM (fp), |
1243 | LOCAL_REF (ntotal + n))); | |
510ca126 AW |
1244 | |
1245 | if (has_rest) | |
1246 | { | |
1247 | SCM rest = SCM_EOL; | |
1248 | n = nkw; | |
1249 | while (n--) | |
1250 | rest = scm_cons (LOCAL_REF (ntotal + n), rest); | |
1251 | LOCAL_SET (nreq_and_opt, rest); | |
1252 | } | |
1253 | ||
1254 | RESET_FRAME (ntotal); | |
1255 | ||
1256 | NEXT (4); | |
1257 | } | |
1258 | ||
1259 | /* bind-rest dst:24 | |
1260 | * | |
1261 | * Collect any arguments at or above DST into a list, and store that | |
1262 | * list at DST. | |
1263 | */ | |
f90c0554 | 1264 | VM_DEFINE_OP (27, bind_rest, "bind-rest", OP1 (U8_U24) | OP_DST) |
510ca126 AW |
1265 | { |
1266 | scm_t_uint32 dst, nargs; | |
1267 | SCM rest = SCM_EOL; | |
1268 | ||
1269 | SCM_UNPACK_RTL_24 (op, dst); | |
1270 | nargs = FRAME_LOCALS_COUNT (); | |
1271 | ||
234155e3 | 1272 | if (nargs <= dst) |
510ca126 | 1273 | { |
234155e3 AW |
1274 | ALLOC_FRAME (dst + 1); |
1275 | while (nargs < dst) | |
1276 | LOCAL_SET (nargs++, SCM_UNDEFINED); | |
510ca126 | 1277 | } |
234155e3 AW |
1278 | else |
1279 | { | |
1280 | while (nargs-- > dst) | |
1281 | { | |
1282 | rest = scm_cons (LOCAL_REF (nargs), rest); | |
1283 | LOCAL_SET (nargs, SCM_UNDEFINED); | |
1284 | } | |
510ca126 | 1285 | |
234155e3 AW |
1286 | RESET_FRAME (dst + 1); |
1287 | } | |
510ca126 | 1288 | |
234155e3 | 1289 | LOCAL_SET (dst, rest); |
510ca126 AW |
1290 | |
1291 | NEXT (1); | |
1292 | } | |
1293 | ||
510ca126 AW |
1294 | |
1295 | \f | |
1296 | ||
1297 | /* | |
1298 | * Branching instructions | |
1299 | */ | |
1300 | ||
1301 | /* br offset:24 | |
1302 | * | |
1303 | * Add OFFSET, a signed 24-bit number, to the current instruction | |
1304 | * pointer. | |
1305 | */ | |
f90c0554 | 1306 | VM_DEFINE_OP (28, br, "br", OP1 (U8_L24)) |
510ca126 AW |
1307 | { |
1308 | scm_t_int32 offset = op; | |
1309 | offset >>= 8; /* Sign-extending shift. */ | |
1310 | NEXT (offset); | |
1311 | } | |
1312 | ||
1313 | /* br-if-true test:24 invert:1 _:7 offset:24 | |
1314 | * | |
1315 | * If the value in TEST is true for the purposes of Scheme, add | |
1316 | * OFFSET, a signed 24-bit number, to the current instruction pointer. | |
1317 | */ | |
f90c0554 | 1318 | VM_DEFINE_OP (29, br_if_true, "br-if-true", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1319 | { |
1320 | BR_UNARY (x, scm_is_true (x)); | |
1321 | } | |
1322 | ||
1323 | /* br-if-null test:24 invert:1 _:7 offset:24 | |
1324 | * | |
1325 | * If the value in TEST is the end-of-list or Lisp nil, add OFFSET, a | |
1326 | * signed 24-bit number, to the current instruction pointer. | |
1327 | */ | |
f90c0554 | 1328 | VM_DEFINE_OP (30, br_if_null, "br-if-null", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1329 | { |
1330 | BR_UNARY (x, scm_is_null (x)); | |
1331 | } | |
1332 | ||
1333 | /* br-if-nil test:24 invert:1 _:7 offset:24 | |
1334 | * | |
1335 | * If the value in TEST is false to Lisp, add OFFSET, a signed 24-bit | |
1336 | * number, to the current instruction pointer. | |
1337 | */ | |
f90c0554 | 1338 | VM_DEFINE_OP (31, br_if_nil, "br-if-nil", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1339 | { |
1340 | BR_UNARY (x, scm_is_lisp_false (x)); | |
1341 | } | |
1342 | ||
1343 | /* br-if-pair test:24 invert:1 _:7 offset:24 | |
1344 | * | |
1345 | * If the value in TEST is a pair, add OFFSET, a signed 24-bit number, | |
1346 | * to the current instruction pointer. | |
1347 | */ | |
f90c0554 | 1348 | VM_DEFINE_OP (32, br_if_pair, "br-if-pair", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1349 | { |
1350 | BR_UNARY (x, scm_is_pair (x)); | |
1351 | } | |
1352 | ||
1353 | /* br-if-struct test:24 invert:1 _:7 offset:24 | |
1354 | * | |
1355 | * If the value in TEST is a struct, add OFFSET, a signed 24-bit | |
1356 | * number, to the current instruction pointer. | |
1357 | */ | |
f90c0554 | 1358 | VM_DEFINE_OP (33, br_if_struct, "br-if-struct", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1359 | { |
1360 | BR_UNARY (x, SCM_STRUCTP (x)); | |
1361 | } | |
1362 | ||
1363 | /* br-if-char test:24 invert:1 _:7 offset:24 | |
1364 | * | |
1365 | * If the value in TEST is a char, add OFFSET, a signed 24-bit number, | |
1366 | * to the current instruction pointer. | |
1367 | */ | |
f90c0554 | 1368 | VM_DEFINE_OP (34, br_if_char, "br-if-char", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1369 | { |
1370 | BR_UNARY (x, SCM_CHARP (x)); | |
1371 | } | |
1372 | ||
1373 | /* br-if-tc7 test:24 invert:1 tc7:7 offset:24 | |
1374 | * | |
1375 | * If the value in TEST has the TC7 given in the second word, add | |
1376 | * OFFSET, a signed 24-bit number, to the current instruction pointer. | |
1377 | */ | |
f90c0554 | 1378 | VM_DEFINE_OP (35, br_if_tc7, "br-if-tc7", OP2 (U8_U24, B1_U7_L24)) |
510ca126 AW |
1379 | { |
1380 | BR_UNARY (x, SCM_HAS_TYP7 (x, (ip[1] >> 1) & 0x7f)); | |
1381 | } | |
1382 | ||
1383 | /* br-if-eq a:12 b:12 invert:1 _:7 offset:24 | |
1384 | * | |
1385 | * If the value in A is eq? to the value in B, add OFFSET, a signed | |
1386 | * 24-bit number, to the current instruction pointer. | |
1387 | */ | |
f90c0554 | 1388 | VM_DEFINE_OP (36, br_if_eq, "br-if-eq", OP2 (U8_U12_U12, B1_X7_L24)) |
510ca126 AW |
1389 | { |
1390 | BR_BINARY (x, y, scm_is_eq (x, y)); | |
1391 | } | |
1392 | ||
1393 | /* br-if-eqv a:12 b:12 invert:1 _:7 offset:24 | |
1394 | * | |
1395 | * If the value in A is eqv? to the value in B, add OFFSET, a signed | |
1396 | * 24-bit number, to the current instruction pointer. | |
1397 | */ | |
f90c0554 | 1398 | VM_DEFINE_OP (37, br_if_eqv, "br-if-eqv", OP2 (U8_U12_U12, B1_X7_L24)) |
510ca126 AW |
1399 | { |
1400 | BR_BINARY (x, y, | |
1401 | scm_is_eq (x, y) | |
1402 | || (SCM_NIMP (x) && SCM_NIMP (y) | |
1403 | && scm_is_true (scm_eqv_p (x, y)))); | |
1404 | } | |
1405 | ||
af95414f | 1406 | // FIXME: remove, have compiler inline eqv test instead |
510ca126 AW |
1407 | /* br-if-equal a:12 b:12 invert:1 _:7 offset:24 |
1408 | * | |
1409 | * If the value in A is equal? to the value in B, add OFFSET, a signed | |
1410 | * 24-bit number, to the current instruction pointer. | |
1411 | */ | |
1412 | // FIXME: should sync_ip before calling out? | |
f90c0554 | 1413 | VM_DEFINE_OP (38, br_if_equal, "br-if-equal", OP2 (U8_U12_U12, B1_X7_L24)) |
510ca126 AW |
1414 | { |
1415 | BR_BINARY (x, y, | |
1416 | scm_is_eq (x, y) | |
1417 | || (SCM_NIMP (x) && SCM_NIMP (y) | |
1418 | && scm_is_true (scm_equal_p (x, y)))); | |
1419 | } | |
1420 | ||
af95414f | 1421 | /* br-if-= a:12 b:12 invert:1 _:7 offset:24 |
510ca126 AW |
1422 | * |
1423 | * If the value in A is = to the value in B, add OFFSET, a signed | |
1424 | * 24-bit number, to the current instruction pointer. | |
1425 | */ | |
f90c0554 | 1426 | VM_DEFINE_OP (39, br_if_ee, "br-if-=", OP2 (U8_U12_U12, B1_X7_L24)) |
510ca126 AW |
1427 | { |
1428 | BR_ARITHMETIC (==, scm_num_eq_p); | |
1429 | } | |
1430 | ||
1431 | /* br-if-< a:12 b:12 _:8 offset:24 | |
1432 | * | |
1433 | * If the value in A is < to the value in B, add OFFSET, a signed | |
1434 | * 24-bit number, to the current instruction pointer. | |
1435 | */ | |
f90c0554 | 1436 | VM_DEFINE_OP (40, br_if_lt, "br-if-<", OP2 (U8_U12_U12, B1_X7_L24)) |
510ca126 AW |
1437 | { |
1438 | BR_ARITHMETIC (<, scm_less_p); | |
1439 | } | |
1440 | ||
1441 | /* br-if-<= a:12 b:12 _:8 offset:24 | |
1442 | * | |
1443 | * If the value in A is <= to the value in B, add OFFSET, a signed | |
1444 | * 24-bit number, to the current instruction pointer. | |
1445 | */ | |
f90c0554 | 1446 | VM_DEFINE_OP (41, br_if_le, "br-if-<=", OP2 (U8_U12_U12, B1_X7_L24)) |
510ca126 AW |
1447 | { |
1448 | BR_ARITHMETIC (<=, scm_leq_p); | |
1449 | } | |
1450 | ||
510ca126 AW |
1451 | |
1452 | \f | |
1453 | ||
1454 | /* | |
1455 | * Lexical binding instructions | |
1456 | */ | |
1457 | ||
1458 | /* mov dst:12 src:12 | |
1459 | * | |
1460 | * Copy a value from one local slot to another. | |
1461 | */ | |
f90c0554 | 1462 | VM_DEFINE_OP (42, mov, "mov", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
1463 | { |
1464 | scm_t_uint16 dst; | |
1465 | scm_t_uint16 src; | |
1466 | ||
1467 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
1468 | LOCAL_SET (dst, LOCAL_REF (src)); | |
1469 | ||
1470 | NEXT (1); | |
1471 | } | |
1472 | ||
1473 | /* long-mov dst:24 _:8 src:24 | |
1474 | * | |
1475 | * Copy a value from one local slot to another. | |
1476 | */ | |
f90c0554 | 1477 | VM_DEFINE_OP (43, long_mov, "long-mov", OP2 (U8_U24, X8_U24) | OP_DST) |
510ca126 AW |
1478 | { |
1479 | scm_t_uint32 dst; | |
1480 | scm_t_uint32 src; | |
1481 | ||
1482 | SCM_UNPACK_RTL_24 (op, dst); | |
1483 | SCM_UNPACK_RTL_24 (ip[1], src); | |
1484 | LOCAL_SET (dst, LOCAL_REF (src)); | |
1485 | ||
1486 | NEXT (2); | |
1487 | } | |
1488 | ||
1489 | /* box dst:12 src:12 | |
1490 | * | |
1491 | * Create a new variable holding SRC, and place it in DST. | |
1492 | */ | |
f90c0554 | 1493 | VM_DEFINE_OP (44, box, "box", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
1494 | { |
1495 | scm_t_uint16 dst, src; | |
1496 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
1497 | LOCAL_SET (dst, scm_cell (scm_tc7_variable, SCM_UNPACK (LOCAL_REF (src)))); | |
1498 | NEXT (1); | |
1499 | } | |
1500 | ||
510ca126 AW |
1501 | /* box-ref dst:12 src:12 |
1502 | * | |
1503 | * Unpack the variable at SRC into DST, asserting that the variable is | |
1504 | * actually bound. | |
1505 | */ | |
f90c0554 | 1506 | VM_DEFINE_OP (45, box_ref, "box-ref", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
1507 | { |
1508 | scm_t_uint16 dst, src; | |
1509 | SCM var; | |
1510 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
1511 | var = LOCAL_REF (src); | |
4f406fea AW |
1512 | VM_ASSERT (SCM_VARIABLEP (var), |
1513 | vm_error_not_a_variable ("variable-ref", var)); | |
af95414f AW |
1514 | VM_ASSERT (VARIABLE_BOUNDP (var), |
1515 | vm_error_unbound (SCM_FRAME_PROGRAM (fp), var)); | |
510ca126 AW |
1516 | LOCAL_SET (dst, VARIABLE_REF (var)); |
1517 | NEXT (1); | |
1518 | } | |
1519 | ||
1520 | /* box-set! dst:12 src:12 | |
1521 | * | |
1522 | * Set the contents of the variable at DST to SET. | |
1523 | */ | |
f90c0554 | 1524 | VM_DEFINE_OP (46, box_set, "box-set!", OP1 (U8_U12_U12)) |
510ca126 AW |
1525 | { |
1526 | scm_t_uint16 dst, src; | |
1527 | SCM var; | |
1528 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
1529 | var = LOCAL_REF (dst); | |
4f406fea AW |
1530 | VM_ASSERT (SCM_VARIABLEP (var), |
1531 | vm_error_not_a_variable ("variable-set!", var)); | |
510ca126 AW |
1532 | VARIABLE_SET (var, LOCAL_REF (src)); |
1533 | NEXT (1); | |
1534 | } | |
1535 | ||
7396d216 | 1536 | /* make-closure dst:24 offset:32 _:8 nfree:24 |
510ca126 AW |
1537 | * |
1538 | * Make a new closure, and write it to DST. The code for the closure | |
1539 | * will be found at OFFSET words from the current IP. OFFSET is a | |
7396d216 AW |
1540 | * signed 32-bit integer. Space for NFREE free variables will be |
1541 | * allocated. | |
510ca126 | 1542 | */ |
f90c0554 | 1543 | VM_DEFINE_OP (47, make_closure, "make-closure", OP3 (U8_U24, L32, X8_U24) | OP_DST) |
510ca126 AW |
1544 | { |
1545 | scm_t_uint32 dst, nfree, n; | |
1546 | scm_t_int32 offset; | |
1547 | SCM closure; | |
1548 | ||
1549 | SCM_UNPACK_RTL_24 (op, dst); | |
1550 | offset = ip[1]; | |
1551 | SCM_UNPACK_RTL_24 (ip[2], nfree); | |
1552 | ||
1553 | // FIXME: Assert range of nfree? | |
1554 | closure = scm_words (scm_tc7_rtl_program | (nfree << 16), nfree + 2); | |
1555 | SCM_SET_CELL_WORD_1 (closure, ip + offset); | |
7396d216 | 1556 | // FIXME: Elide these initializations? |
510ca126 | 1557 | for (n = 0; n < nfree; n++) |
7396d216 | 1558 | SCM_RTL_PROGRAM_FREE_VARIABLE_SET (closure, n, SCM_BOOL_F); |
510ca126 | 1559 | LOCAL_SET (dst, closure); |
7396d216 | 1560 | NEXT (3); |
510ca126 AW |
1561 | } |
1562 | ||
7396d216 | 1563 | /* free-ref dst:12 src:12 _:8 idx:24 |
510ca126 | 1564 | * |
7396d216 | 1565 | * Load free variable IDX from the closure SRC into local slot DST. |
510ca126 | 1566 | */ |
f90c0554 | 1567 | VM_DEFINE_OP (48, free_ref, "free-ref", OP2 (U8_U12_U12, X8_U24) | OP_DST) |
510ca126 | 1568 | { |
7396d216 AW |
1569 | scm_t_uint16 dst, src; |
1570 | scm_t_uint32 idx; | |
1571 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
1572 | SCM_UNPACK_RTL_24 (ip[1], idx); | |
1573 | /* CHECK_FREE_VARIABLE (src); */ | |
1574 | LOCAL_SET (dst, SCM_RTL_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (src), idx)); | |
1575 | NEXT (2); | |
1576 | } | |
510ca126 | 1577 | |
7396d216 AW |
1578 | /* free-set! dst:12 src:12 _8 idx:24 |
1579 | * | |
1580 | * Set free variable IDX from the closure DST to SRC. | |
1581 | */ | |
f90c0554 | 1582 | VM_DEFINE_OP (49, free_set, "free-set!", OP2 (U8_U12_U12, X8_U24)) |
7396d216 AW |
1583 | { |
1584 | scm_t_uint16 dst, src; | |
1585 | scm_t_uint32 idx; | |
1586 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
1587 | SCM_UNPACK_RTL_24 (ip[1], idx); | |
1588 | /* CHECK_FREE_VARIABLE (src); */ | |
1589 | SCM_RTL_PROGRAM_FREE_VARIABLE_SET (LOCAL_REF (dst), idx, LOCAL_REF (src)); | |
1590 | NEXT (2); | |
510ca126 AW |
1591 | } |
1592 | ||
1593 | ||
1594 | \f | |
1595 | ||
1596 | /* | |
1597 | * Immediates and statically allocated non-immediates | |
1598 | */ | |
1599 | ||
1600 | /* make-short-immediate dst:8 low-bits:16 | |
1601 | * | |
1602 | * Make an immediate whose low bits are LOW-BITS, and whose top bits are | |
1603 | * 0. | |
1604 | */ | |
f90c0554 | 1605 | VM_DEFINE_OP (50, make_short_immediate, "make-short-immediate", OP1 (U8_U8_I16) | OP_DST) |
510ca126 AW |
1606 | { |
1607 | scm_t_uint8 dst; | |
1608 | scm_t_bits val; | |
1609 | ||
1610 | SCM_UNPACK_RTL_8_16 (op, dst, val); | |
1611 | LOCAL_SET (dst, SCM_PACK (val)); | |
1612 | NEXT (1); | |
1613 | } | |
1614 | ||
1615 | /* make-long-immediate dst:24 low-bits:32 | |
1616 | * | |
1617 | * Make an immediate whose low bits are LOW-BITS, and whose top bits are | |
1618 | * 0. | |
1619 | */ | |
f90c0554 | 1620 | VM_DEFINE_OP (51, make_long_immediate, "make-long-immediate", OP2 (U8_U24, I32)) |
510ca126 | 1621 | { |
da60ba80 | 1622 | scm_t_uint32 dst; |
510ca126 AW |
1623 | scm_t_bits val; |
1624 | ||
1625 | SCM_UNPACK_RTL_24 (op, dst); | |
1626 | val = ip[1]; | |
1627 | LOCAL_SET (dst, SCM_PACK (val)); | |
1628 | NEXT (2); | |
1629 | } | |
1630 | ||
1631 | /* make-long-long-immediate dst:24 high-bits:32 low-bits:32 | |
1632 | * | |
1633 | * Make an immediate with HIGH-BITS and LOW-BITS. | |
1634 | */ | |
f90c0554 | 1635 | VM_DEFINE_OP (52, make_long_long_immediate, "make-long-long-immediate", OP3 (U8_U24, A32, B32) | OP_DST) |
510ca126 | 1636 | { |
da60ba80 | 1637 | scm_t_uint32 dst; |
510ca126 AW |
1638 | scm_t_bits val; |
1639 | ||
1640 | SCM_UNPACK_RTL_24 (op, dst); | |
1641 | #if SIZEOF_SCM_T_BITS > 4 | |
1642 | val = ip[1]; | |
1643 | val <<= 32; | |
1644 | val |= ip[2]; | |
1645 | #else | |
1646 | ASSERT (ip[1] == 0); | |
1647 | val = ip[2]; | |
1648 | #endif | |
1649 | LOCAL_SET (dst, SCM_PACK (val)); | |
1650 | NEXT (3); | |
1651 | } | |
1652 | ||
1653 | /* make-non-immediate dst:24 offset:32 | |
1654 | * | |
1655 | * Load a pointer to statically allocated memory into DST. The | |
1656 | * object's memory is will be found OFFSET 32-bit words away from the | |
1657 | * current instruction pointer. OFFSET is a signed value. The | |
1658 | * intention here is that the compiler would produce an object file | |
1659 | * containing the words of a non-immediate object, and this | |
1660 | * instruction creates a pointer to that memory, effectively | |
1661 | * resurrecting that object. | |
1662 | * | |
1663 | * Whether the object is mutable or immutable depends on where it was | |
1664 | * allocated by the compiler, and loaded by the loader. | |
1665 | */ | |
f90c0554 | 1666 | VM_DEFINE_OP (53, make_non_immediate, "make-non-immediate", OP2 (U8_U24, N32) | OP_DST) |
510ca126 AW |
1667 | { |
1668 | scm_t_uint32 dst; | |
1669 | scm_t_int32 offset; | |
1670 | scm_t_uint32* loc; | |
1671 | scm_t_bits unpacked; | |
1672 | ||
1673 | SCM_UNPACK_RTL_24 (op, dst); | |
1674 | offset = ip[1]; | |
1675 | loc = ip + offset; | |
1676 | unpacked = (scm_t_bits) loc; | |
1677 | ||
1678 | VM_ASSERT (!(unpacked & 0x7), abort()); | |
1679 | ||
1680 | LOCAL_SET (dst, SCM_PACK (unpacked)); | |
1681 | ||
1682 | NEXT (2); | |
1683 | } | |
1684 | ||
1685 | /* static-ref dst:24 offset:32 | |
1686 | * | |
1687 | * Load a SCM value into DST. The SCM value will be fetched from | |
1688 | * memory, OFFSET 32-bit words away from the current instruction | |
1689 | * pointer. OFFSET is a signed value. | |
1690 | * | |
1691 | * The intention is for this instruction to be used to load constants | |
1692 | * that the compiler is unable to statically allocate, like symbols. | |
1693 | * These values would be initialized when the object file loads. | |
1694 | */ | |
f90c0554 | 1695 | VM_DEFINE_OP (54, static_ref, "static-ref", OP2 (U8_U24, S32)) |
510ca126 AW |
1696 | { |
1697 | scm_t_uint32 dst; | |
1698 | scm_t_int32 offset; | |
1699 | scm_t_uint32* loc; | |
1700 | scm_t_uintptr loc_bits; | |
1701 | ||
1702 | SCM_UNPACK_RTL_24 (op, dst); | |
1703 | offset = ip[1]; | |
1704 | loc = ip + offset; | |
1705 | loc_bits = (scm_t_uintptr) loc; | |
1706 | VM_ASSERT (ALIGNED_P (loc, SCM), abort()); | |
1707 | ||
1708 | LOCAL_SET (dst, *((SCM *) loc_bits)); | |
1709 | ||
1710 | NEXT (2); | |
1711 | } | |
1712 | ||
1713 | /* static-set! src:24 offset:32 | |
1714 | * | |
1715 | * Store a SCM value into memory, OFFSET 32-bit words away from the | |
1716 | * current instruction pointer. OFFSET is a signed value. | |
1717 | */ | |
f90c0554 | 1718 | VM_DEFINE_OP (55, static_set, "static-set!", OP2 (U8_U24, LO32)) |
510ca126 AW |
1719 | { |
1720 | scm_t_uint32 src; | |
1721 | scm_t_int32 offset; | |
1722 | scm_t_uint32* loc; | |
1723 | ||
1724 | SCM_UNPACK_RTL_24 (op, src); | |
1725 | offset = ip[1]; | |
1726 | loc = ip + offset; | |
1727 | VM_ASSERT (ALIGNED_P (loc, SCM), abort()); | |
1728 | ||
1729 | *((SCM *) loc) = LOCAL_REF (src); | |
1730 | ||
1731 | NEXT (2); | |
1732 | } | |
1733 | ||
2ab2a10d | 1734 | /* static-patch! _:24 dst-offset:32 src-offset:32 |
510ca126 | 1735 | * |
2ab2a10d AW |
1736 | * Patch a pointer at DST-OFFSET to point to SRC-OFFSET. Both offsets |
1737 | * are signed 32-bit values, indicating a memory address as a number | |
1738 | * of 32-bit words away from the current instruction pointer. | |
510ca126 | 1739 | */ |
f90c0554 | 1740 | VM_DEFINE_OP (56, static_patch, "static-patch!", OP3 (U8_X24, LO32, L32)) |
510ca126 | 1741 | { |
2ab2a10d AW |
1742 | scm_t_int32 dst_offset, src_offset; |
1743 | void *src; | |
1744 | void** dst_loc; | |
510ca126 | 1745 | |
2ab2a10d AW |
1746 | dst_offset = ip[1]; |
1747 | src_offset = ip[2]; | |
510ca126 | 1748 | |
2ab2a10d AW |
1749 | dst_loc = (void **) (ip + dst_offset); |
1750 | src = ip + src_offset; | |
1751 | VM_ASSERT (ALIGNED_P (dst_loc, void*), abort()); | |
510ca126 | 1752 | |
2ab2a10d AW |
1753 | *dst_loc = src; |
1754 | ||
1755 | NEXT (3); | |
510ca126 AW |
1756 | } |
1757 | ||
1758 | \f | |
1759 | ||
1760 | /* | |
1761 | * Mutable top-level bindings | |
1762 | */ | |
1763 | ||
1764 | /* There are three slightly different ways to resolve toplevel | |
1765 | variables. | |
1766 | ||
1767 | 1. A toplevel reference outside of a function. These need to be | |
1768 | looked up when the expression is evaluated -- no later, and no | |
1769 | before. They are looked up relative to the module that is | |
1770 | current when the expression is evaluated. For example: | |
1771 | ||
1772 | (if (foo) a b) | |
1773 | ||
1774 | The "resolve" instruction resolves the variable (box), and then | |
1775 | access is via box-ref or box-set!. | |
1776 | ||
1777 | 2. A toplevel reference inside a function. These are looked up | |
1778 | relative to the module that was current when the function was | |
1779 | defined. Unlike code at the toplevel, which is usually run only | |
1780 | once, these bindings benefit from memoized lookup, in which the | |
1781 | variable resulting from the lookup is cached in the function. | |
1782 | ||
1783 | (lambda () (if (foo) a b)) | |
1784 | ||
af95414f AW |
1785 | The toplevel-box instruction is equivalent to "resolve", but |
1786 | caches the resulting variable in statically allocated memory. | |
510ca126 AW |
1787 | |
1788 | 3. A reference to an identifier with respect to a particular | |
1789 | module. This can happen for primitive references, and | |
af95414f AW |
1790 | references residualized by macro expansions. These can always |
1791 | be cached. Use module-box for these. | |
510ca126 AW |
1792 | */ |
1793 | ||
1794 | /* current-module dst:24 | |
1795 | * | |
1796 | * Store the current module in DST. | |
1797 | */ | |
f90c0554 | 1798 | VM_DEFINE_OP (57, current_module, "current-module", OP1 (U8_U24) | OP_DST) |
510ca126 AW |
1799 | { |
1800 | scm_t_uint32 dst; | |
1801 | ||
1802 | SCM_UNPACK_RTL_24 (op, dst); | |
1803 | ||
1804 | SYNC_IP (); | |
1805 | LOCAL_SET (dst, scm_current_module ()); | |
1806 | ||
1807 | NEXT (1); | |
1808 | } | |
1809 | ||
af95414f | 1810 | /* resolve dst:24 bound?:1 _:7 sym:24 |
510ca126 | 1811 | * |
af95414f AW |
1812 | * Resolve SYM in the current module, and place the resulting variable |
1813 | * in DST. | |
510ca126 | 1814 | */ |
f90c0554 | 1815 | VM_DEFINE_OP (58, resolve, "resolve", OP2 (U8_U24, B1_X7_U24) | OP_DST) |
510ca126 | 1816 | { |
af95414f AW |
1817 | scm_t_uint32 dst; |
1818 | scm_t_uint32 sym; | |
1819 | SCM var; | |
510ca126 | 1820 | |
af95414f AW |
1821 | SCM_UNPACK_RTL_24 (op, dst); |
1822 | SCM_UNPACK_RTL_24 (ip[1], sym); | |
510ca126 AW |
1823 | |
1824 | SYNC_IP (); | |
af95414f AW |
1825 | var = scm_lookup (LOCAL_REF (sym)); |
1826 | if (ip[1] & 0x1) | |
1827 | VM_ASSERT (VARIABLE_BOUNDP (var), | |
1828 | vm_error_unbound (fp[-1], LOCAL_REF (sym))); | |
1829 | LOCAL_SET (dst, var); | |
510ca126 | 1830 | |
af95414f | 1831 | NEXT (2); |
510ca126 AW |
1832 | } |
1833 | ||
6165d812 | 1834 | /* define! sym:12 val:12 |
510ca126 AW |
1835 | * |
1836 | * Look up a binding for SYM in the current module, creating it if | |
1837 | * necessary. Set its value to VAL. | |
1838 | */ | |
f90c0554 | 1839 | VM_DEFINE_OP (59, define, "define!", OP1 (U8_U12_U12)) |
510ca126 AW |
1840 | { |
1841 | scm_t_uint16 sym, val; | |
1842 | SCM_UNPACK_RTL_12_12 (op, sym, val); | |
1843 | SYNC_IP (); | |
1844 | scm_define (LOCAL_REF (sym), LOCAL_REF (val)); | |
1845 | NEXT (1); | |
1846 | } | |
1847 | ||
af95414f | 1848 | /* toplevel-box dst:24 var-offset:32 mod-offset:32 sym-offset:32 bound?:1 _:31 |
510ca126 AW |
1849 | * |
1850 | * Load a SCM value. The SCM value will be fetched from memory, | |
1851 | * VAR-OFFSET 32-bit words away from the current instruction pointer. | |
af95414f | 1852 | * VAR-OFFSET is a signed value. Up to here, toplevel-box is like |
510ca126 AW |
1853 | * static-ref. |
1854 | * | |
af95414f AW |
1855 | * Then, if the loaded value is a variable, it is placed in DST, and control |
1856 | * flow continues. | |
510ca126 AW |
1857 | * |
1858 | * Otherwise, we have to resolve the variable. In that case we load | |
1859 | * the module from MOD-OFFSET, just as we loaded the variable. | |
1860 | * Usually the module gets set when the closure is created. The name | |
1861 | * is an offset to a symbol. | |
1862 | * | |
af95414f AW |
1863 | * We use the module and the symbol to resolve the variable, placing it in |
1864 | * DST, and caching the resolved variable so that we will hit the cache next | |
1865 | * time. | |
510ca126 | 1866 | */ |
f90c0554 | 1867 | VM_DEFINE_OP (60, toplevel_box, "toplevel-box", OP5 (U8_U24, S32, S32, N32, B1_X31) | OP_DST) |
510ca126 AW |
1868 | { |
1869 | scm_t_uint32 dst; | |
1870 | scm_t_int32 var_offset; | |
1871 | scm_t_uint32* var_loc_u32; | |
1872 | SCM *var_loc; | |
1873 | SCM var; | |
1874 | ||
1875 | SCM_UNPACK_RTL_24 (op, dst); | |
1876 | var_offset = ip[1]; | |
1877 | var_loc_u32 = ip + var_offset; | |
1878 | VM_ASSERT (ALIGNED_P (var_loc_u32, SCM), abort()); | |
1879 | var_loc = (SCM *) var_loc_u32; | |
1880 | var = *var_loc; | |
1881 | ||
1882 | if (SCM_UNLIKELY (!SCM_VARIABLEP (var))) | |
1883 | { | |
1884 | SCM mod, sym; | |
1885 | scm_t_int32 mod_offset = ip[2]; /* signed */ | |
1886 | scm_t_int32 sym_offset = ip[3]; /* signed */ | |
1887 | scm_t_uint32 *mod_loc = ip + mod_offset; | |
1888 | scm_t_uint32 *sym_loc = ip + sym_offset; | |
1889 | ||
1890 | SYNC_IP (); | |
1891 | ||
1892 | VM_ASSERT (ALIGNED_P (mod_loc, SCM), abort()); | |
1893 | VM_ASSERT (ALIGNED_P (sym_loc, SCM), abort()); | |
1894 | ||
1895 | mod = *((SCM *) mod_loc); | |
1896 | sym = *((SCM *) sym_loc); | |
1897 | ||
e23f9e44 AW |
1898 | /* If the toplevel scope was captured before modules were |
1899 | booted, use the root module. */ | |
1900 | if (scm_is_false (mod)) | |
1901 | mod = scm_the_root_module (); | |
1902 | ||
510ca126 | 1903 | var = scm_module_lookup (mod, sym); |
af95414f AW |
1904 | if (ip[4] & 0x1) |
1905 | VM_ASSERT (VARIABLE_BOUNDP (var), vm_error_unbound (fp[-1], sym)); | |
510ca126 AW |
1906 | |
1907 | *var_loc = var; | |
1908 | } | |
1909 | ||
af95414f AW |
1910 | LOCAL_SET (dst, var); |
1911 | NEXT (5); | |
510ca126 AW |
1912 | } |
1913 | ||
af95414f | 1914 | /* module-box dst:24 var-offset:32 mod-offset:32 sym-offset:32 bound?:1 _:31 |
510ca126 | 1915 | * |
af95414f | 1916 | * Like toplevel-box, except MOD-OFFSET points at the name of a module |
510ca126 AW |
1917 | * instead of the module itself. |
1918 | */ | |
f90c0554 | 1919 | VM_DEFINE_OP (61, module_box, "module-box", OP5 (U8_U24, S32, N32, N32, B1_X31) | OP_DST) |
510ca126 AW |
1920 | { |
1921 | scm_t_uint32 dst; | |
1922 | scm_t_int32 var_offset; | |
1923 | scm_t_uint32* var_loc_u32; | |
1924 | SCM *var_loc; | |
1925 | SCM var; | |
1926 | ||
1927 | SCM_UNPACK_RTL_24 (op, dst); | |
1928 | var_offset = ip[1]; | |
1929 | var_loc_u32 = ip + var_offset; | |
1930 | VM_ASSERT (ALIGNED_P (var_loc_u32, SCM), abort()); | |
1931 | var_loc = (SCM *) var_loc_u32; | |
1932 | var = *var_loc; | |
1933 | ||
1934 | if (SCM_UNLIKELY (!SCM_VARIABLEP (var))) | |
1935 | { | |
1936 | SCM modname, sym; | |
1937 | scm_t_int32 modname_offset = ip[2]; /* signed */ | |
1938 | scm_t_int32 sym_offset = ip[3]; /* signed */ | |
1939 | scm_t_uint32 *modname_words = ip + modname_offset; | |
1940 | scm_t_uint32 *sym_loc = ip + sym_offset; | |
1941 | ||
1942 | SYNC_IP (); | |
1943 | ||
1944 | VM_ASSERT (!(((scm_t_uintptr) modname_words) & 0x7), abort()); | |
1945 | VM_ASSERT (ALIGNED_P (sym_loc, SCM), abort()); | |
1946 | ||
1947 | modname = SCM_PACK ((scm_t_bits) modname_words); | |
1948 | sym = *((SCM *) sym_loc); | |
1949 | ||
e23f9e44 AW |
1950 | if (!scm_module_system_booted_p) |
1951 | { | |
1952 | #ifdef VM_ENABLE_PARANOID_ASSERTIONS | |
1953 | ASSERT | |
1954 | (scm_is_true | |
1955 | scm_equal_p (modname, | |
1956 | scm_list_2 (SCM_BOOL_T, | |
1957 | scm_from_utf8_symbol ("guile")))); | |
1958 | #endif | |
1959 | var = scm_lookup (sym); | |
1960 | } | |
1961 | else if (scm_is_true (SCM_CAR (modname))) | |
510ca126 AW |
1962 | var = scm_public_lookup (SCM_CDR (modname), sym); |
1963 | else | |
1964 | var = scm_private_lookup (SCM_CDR (modname), sym); | |
1965 | ||
af95414f AW |
1966 | if (ip[4] & 0x1) |
1967 | VM_ASSERT (VARIABLE_BOUNDP (var), vm_error_unbound (fp[-1], sym)); | |
510ca126 AW |
1968 | |
1969 | *var_loc = var; | |
1970 | } | |
1971 | ||
af95414f AW |
1972 | LOCAL_SET (dst, var); |
1973 | NEXT (5); | |
510ca126 AW |
1974 | } |
1975 | ||
1976 | \f | |
1977 | ||
1978 | /* | |
1979 | * The dynamic environment | |
1980 | */ | |
1981 | ||
8d59d55e | 1982 | /* prompt tag:24 escape-only?:1 _:7 proc-slot:24 _:8 handler-offset:24 |
510ca126 AW |
1983 | * |
1984 | * Push a new prompt on the dynamic stack, with a tag from TAG and a | |
1985 | * handler at HANDLER-OFFSET words from the current IP. The handler | |
8d59d55e AW |
1986 | * will expect a multiple-value return as if from a call with the |
1987 | * procedure at PROC-SLOT. | |
510ca126 | 1988 | */ |
f90c0554 | 1989 | VM_DEFINE_OP (62, prompt, "prompt", OP3 (U8_U24, B1_X7_U24, X8_L24)) |
510ca126 | 1990 | { |
8d59d55e | 1991 | scm_t_uint32 tag, proc_slot; |
510ca126 AW |
1992 | scm_t_int32 offset; |
1993 | scm_t_uint8 escape_only_p; | |
1994 | scm_t_dynstack_prompt_flags flags; | |
1995 | ||
1996 | SCM_UNPACK_RTL_24 (op, tag); | |
8d59d55e AW |
1997 | escape_only_p = ip[1] & 0x1; |
1998 | SCM_UNPACK_RTL_24 (ip[1], proc_slot); | |
1999 | offset = ip[2]; | |
510ca126 AW |
2000 | offset >>= 8; /* Sign extension */ |
2001 | ||
2002 | /* Push the prompt onto the dynamic stack. */ | |
2003 | flags = escape_only_p ? SCM_F_DYNSTACK_PROMPT_ESCAPE_ONLY : 0; | |
2004 | scm_dynstack_push_prompt (¤t_thread->dynstack, flags, | |
2005 | LOCAL_REF (tag), | |
8d59d55e AW |
2006 | fp, |
2007 | &LOCAL_REF (proc_slot), | |
2008 | (scm_t_uint8 *)(ip + offset), | |
2009 | ®isters); | |
2010 | NEXT (3); | |
510ca126 | 2011 | } |
510ca126 AW |
2012 | |
2013 | /* wind winder:12 unwinder:12 | |
2014 | * | |
2015 | * Push wind and unwind procedures onto the dynamic stack. Note that | |
2016 | * neither are actually called; the compiler should emit calls to wind | |
2017 | * and unwind for the normal dynamic-wind control flow. Also note that | |
2018 | * the compiler should have inserted checks that they wind and unwind | |
2019 | * procs are thunks, if it could not prove that to be the case. | |
2020 | */ | |
f90c0554 | 2021 | VM_DEFINE_OP (63, wind, "wind", OP1 (U8_U12_U12)) |
510ca126 AW |
2022 | { |
2023 | scm_t_uint16 winder, unwinder; | |
2024 | SCM_UNPACK_RTL_12_12 (op, winder, unwinder); | |
2025 | scm_dynstack_push_dynwind (¤t_thread->dynstack, | |
2026 | LOCAL_REF (winder), LOCAL_REF (unwinder)); | |
2027 | NEXT (1); | |
2028 | } | |
2029 | ||
510ca126 AW |
2030 | /* unwind _:24 |
2031 | * | |
2032 | * A normal exit from the dynamic extent of an expression. Pop the top | |
2033 | * entry off of the dynamic stack. | |
2034 | */ | |
f90c0554 | 2035 | VM_DEFINE_OP (64, unwind, "unwind", OP1 (U8_X24)) |
510ca126 AW |
2036 | { |
2037 | scm_dynstack_pop (¤t_thread->dynstack); | |
2038 | NEXT (1); | |
2039 | } | |
2040 | ||
98eaef1b | 2041 | /* push-fluid fluid:12 value:12 |
510ca126 AW |
2042 | * |
2043 | * Dynamically bind N fluids to values. The fluids are expected to be | |
2044 | * allocated in a continguous range on the stack, starting from | |
2045 | * FLUID-BASE. The values do not have this restriction. | |
2046 | */ | |
f90c0554 | 2047 | VM_DEFINE_OP (65, push_fluid, "push-fluid", OP1 (U8_U12_U12)) |
510ca126 | 2048 | { |
98eaef1b | 2049 | scm_t_uint32 fluid, value; |
510ca126 | 2050 | |
98eaef1b | 2051 | SCM_UNPACK_RTL_12_12 (op, fluid, value); |
510ca126 | 2052 | |
98eaef1b | 2053 | scm_dynstack_push_fluid (¤t_thread->dynstack, |
2a4ee2ac | 2054 | LOCAL_REF (fluid), LOCAL_REF (value), |
98eaef1b AW |
2055 | current_thread->dynamic_state); |
2056 | NEXT (1); | |
510ca126 | 2057 | } |
510ca126 | 2058 | |
98eaef1b | 2059 | /* pop-fluid _:24 |
510ca126 AW |
2060 | * |
2061 | * Leave the dynamic extent of a with-fluids expression, restoring the | |
2062 | * fluids to their previous values. | |
2063 | */ | |
f90c0554 | 2064 | VM_DEFINE_OP (66, pop_fluid, "pop-fluid", OP1 (U8_X24)) |
510ca126 AW |
2065 | { |
2066 | /* This function must not allocate. */ | |
98eaef1b AW |
2067 | scm_dynstack_unwind_fluid (¤t_thread->dynstack, |
2068 | current_thread->dynamic_state); | |
510ca126 AW |
2069 | NEXT (1); |
2070 | } | |
2071 | ||
2072 | /* fluid-ref dst:12 src:12 | |
2073 | * | |
2074 | * Reference the fluid in SRC, and place the value in DST. | |
2075 | */ | |
f90c0554 | 2076 | VM_DEFINE_OP (67, fluid_ref, "fluid-ref", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2077 | { |
2078 | scm_t_uint16 dst, src; | |
2079 | size_t num; | |
2080 | SCM fluid, fluids; | |
2081 | ||
2082 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
2083 | fluid = LOCAL_REF (src); | |
2084 | fluids = SCM_I_DYNAMIC_STATE_FLUIDS (current_thread->dynamic_state); | |
2085 | if (SCM_UNLIKELY (!SCM_FLUID_P (fluid)) | |
2086 | || ((num = SCM_I_FLUID_NUM (fluid)) >= SCM_SIMPLE_VECTOR_LENGTH (fluids))) | |
2087 | { | |
2088 | /* Punt dynstate expansion and error handling to the C proc. */ | |
2089 | SYNC_IP (); | |
2090 | LOCAL_SET (dst, scm_fluid_ref (fluid)); | |
2091 | } | |
2092 | else | |
2093 | { | |
2094 | SCM val = SCM_SIMPLE_VECTOR_REF (fluids, num); | |
2095 | if (scm_is_eq (val, SCM_UNDEFINED)) | |
2096 | val = SCM_I_FLUID_DEFAULT (fluid); | |
2097 | VM_ASSERT (!scm_is_eq (val, SCM_UNDEFINED), | |
2098 | vm_error_unbound_fluid (program, fluid)); | |
2099 | LOCAL_SET (dst, val); | |
2100 | } | |
2101 | ||
2102 | NEXT (1); | |
2103 | } | |
2104 | ||
2105 | /* fluid-set fluid:12 val:12 | |
2106 | * | |
2107 | * Set the value of the fluid in DST to the value in SRC. | |
2108 | */ | |
f90c0554 | 2109 | VM_DEFINE_OP (68, fluid_set, "fluid-set", OP1 (U8_U12_U12)) |
510ca126 AW |
2110 | { |
2111 | scm_t_uint16 a, b; | |
2112 | size_t num; | |
2113 | SCM fluid, fluids; | |
2114 | ||
2115 | SCM_UNPACK_RTL_12_12 (op, a, b); | |
2116 | fluid = LOCAL_REF (a); | |
2117 | fluids = SCM_I_DYNAMIC_STATE_FLUIDS (current_thread->dynamic_state); | |
2118 | if (SCM_UNLIKELY (!SCM_FLUID_P (fluid)) | |
2119 | || ((num = SCM_I_FLUID_NUM (fluid)) >= SCM_SIMPLE_VECTOR_LENGTH (fluids))) | |
2120 | { | |
2121 | /* Punt dynstate expansion and error handling to the C proc. */ | |
2122 | SYNC_IP (); | |
2123 | scm_fluid_set_x (fluid, LOCAL_REF (b)); | |
2124 | } | |
2125 | else | |
2126 | SCM_SIMPLE_VECTOR_SET (fluids, num, LOCAL_REF (b)); | |
2127 | ||
2128 | NEXT (1); | |
2129 | } | |
2130 | ||
2131 | ||
2132 | \f | |
2133 | ||
2134 | /* | |
2135 | * Strings, symbols, and keywords | |
2136 | */ | |
2137 | ||
2138 | /* string-length dst:12 src:12 | |
2139 | * | |
2140 | * Store the length of the string in SRC in DST. | |
2141 | */ | |
f90c0554 | 2142 | VM_DEFINE_OP (69, string_length, "string-length", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2143 | { |
2144 | ARGS1 (str); | |
2145 | if (SCM_LIKELY (scm_is_string (str))) | |
2146 | RETURN (SCM_I_MAKINUM (scm_i_string_length (str))); | |
2147 | else | |
2148 | { | |
2149 | SYNC_IP (); | |
2150 | RETURN (scm_string_length (str)); | |
2151 | } | |
2152 | } | |
2153 | ||
2154 | /* string-ref dst:8 src:8 idx:8 | |
2155 | * | |
2156 | * Fetch the character at position IDX in the string in SRC, and store | |
2157 | * it in DST. | |
2158 | */ | |
f90c0554 | 2159 | VM_DEFINE_OP (70, string_ref, "string-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2160 | { |
2161 | scm_t_signed_bits i = 0; | |
2162 | ARGS2 (str, idx); | |
2163 | if (SCM_LIKELY (scm_is_string (str) | |
2164 | && SCM_I_INUMP (idx) | |
2165 | && ((i = SCM_I_INUM (idx)) >= 0) | |
2166 | && i < scm_i_string_length (str))) | |
2167 | RETURN (SCM_MAKE_CHAR (scm_i_string_ref (str, i))); | |
2168 | else | |
2169 | { | |
2170 | SYNC_IP (); | |
2171 | RETURN (scm_string_ref (str, idx)); | |
2172 | } | |
2173 | } | |
2174 | ||
2175 | /* No string-set! instruction, as there is no good fast path there. */ | |
2176 | ||
2177 | /* string-to-number dst:12 src:12 | |
2178 | * | |
2179 | * Parse a string in SRC to a number, and store in DST. | |
2180 | */ | |
f90c0554 | 2181 | VM_DEFINE_OP (71, string_to_number, "string->number", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2182 | { |
2183 | scm_t_uint16 dst, src; | |
2184 | ||
2185 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
2186 | SYNC_IP (); | |
2187 | LOCAL_SET (dst, | |
2188 | scm_string_to_number (LOCAL_REF (src), | |
2189 | SCM_UNDEFINED /* radix = 10 */)); | |
2190 | NEXT (1); | |
2191 | } | |
2192 | ||
2193 | /* string-to-symbol dst:12 src:12 | |
2194 | * | |
2195 | * Parse a string in SRC to a symbol, and store in DST. | |
2196 | */ | |
f90c0554 | 2197 | VM_DEFINE_OP (72, string_to_symbol, "string->symbol", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2198 | { |
2199 | scm_t_uint16 dst, src; | |
2200 | ||
2201 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
2202 | SYNC_IP (); | |
2203 | LOCAL_SET (dst, scm_string_to_symbol (LOCAL_REF (src))); | |
2204 | NEXT (1); | |
2205 | } | |
2206 | ||
2207 | /* symbol->keyword dst:12 src:12 | |
2208 | * | |
2209 | * Make a keyword from the symbol in SRC, and store it in DST. | |
2210 | */ | |
f90c0554 | 2211 | VM_DEFINE_OP (73, symbol_to_keyword, "symbol->keyword", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2212 | { |
2213 | scm_t_uint16 dst, src; | |
2214 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
2215 | SYNC_IP (); | |
2216 | LOCAL_SET (dst, scm_symbol_to_keyword (LOCAL_REF (src))); | |
2217 | NEXT (1); | |
2218 | } | |
2219 | ||
2220 | \f | |
2221 | ||
2222 | /* | |
2223 | * Pairs | |
2224 | */ | |
2225 | ||
2226 | /* cons dst:8 car:8 cdr:8 | |
2227 | * | |
2228 | * Cons CAR and CDR, and store the result in DST. | |
2229 | */ | |
f90c0554 | 2230 | VM_DEFINE_OP (74, cons, "cons", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2231 | { |
2232 | ARGS2 (x, y); | |
2233 | RETURN (scm_cons (x, y)); | |
2234 | } | |
2235 | ||
2236 | /* car dst:12 src:12 | |
2237 | * | |
2238 | * Place the car of SRC in DST. | |
2239 | */ | |
f90c0554 | 2240 | VM_DEFINE_OP (75, car, "car", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2241 | { |
2242 | ARGS1 (x); | |
2243 | VM_VALIDATE_PAIR (x, "car"); | |
2244 | RETURN (SCM_CAR (x)); | |
2245 | } | |
2246 | ||
2247 | /* cdr dst:12 src:12 | |
2248 | * | |
2249 | * Place the cdr of SRC in DST. | |
2250 | */ | |
f90c0554 | 2251 | VM_DEFINE_OP (76, cdr, "cdr", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2252 | { |
2253 | ARGS1 (x); | |
2254 | VM_VALIDATE_PAIR (x, "cdr"); | |
2255 | RETURN (SCM_CDR (x)); | |
2256 | } | |
2257 | ||
2258 | /* set-car! pair:12 car:12 | |
2259 | * | |
2260 | * Set the car of DST to SRC. | |
2261 | */ | |
f90c0554 | 2262 | VM_DEFINE_OP (77, set_car, "set-car!", OP1 (U8_U12_U12)) |
510ca126 AW |
2263 | { |
2264 | scm_t_uint16 a, b; | |
2265 | SCM x, y; | |
2266 | SCM_UNPACK_RTL_12_12 (op, a, b); | |
2267 | x = LOCAL_REF (a); | |
2268 | y = LOCAL_REF (b); | |
2269 | VM_VALIDATE_PAIR (x, "set-car!"); | |
2270 | SCM_SETCAR (x, y); | |
2271 | NEXT (1); | |
2272 | } | |
2273 | ||
2274 | /* set-cdr! pair:12 cdr:12 | |
2275 | * | |
2276 | * Set the cdr of DST to SRC. | |
2277 | */ | |
f90c0554 | 2278 | VM_DEFINE_OP (78, set_cdr, "set-cdr!", OP1 (U8_U12_U12)) |
510ca126 AW |
2279 | { |
2280 | scm_t_uint16 a, b; | |
2281 | SCM x, y; | |
2282 | SCM_UNPACK_RTL_12_12 (op, a, b); | |
2283 | x = LOCAL_REF (a); | |
2284 | y = LOCAL_REF (b); | |
2285 | VM_VALIDATE_PAIR (x, "set-car!"); | |
2286 | SCM_SETCDR (x, y); | |
2287 | NEXT (1); | |
2288 | } | |
2289 | ||
2290 | ||
2291 | \f | |
2292 | ||
2293 | /* | |
2294 | * Numeric operations | |
2295 | */ | |
2296 | ||
2297 | /* add dst:8 a:8 b:8 | |
2298 | * | |
2299 | * Add A to B, and place the result in DST. | |
2300 | */ | |
f90c0554 | 2301 | VM_DEFINE_OP (79, add, "add", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2302 | { |
2303 | BINARY_INTEGER_OP (+, scm_sum); | |
2304 | } | |
2305 | ||
2306 | /* add1 dst:12 src:12 | |
2307 | * | |
2308 | * Add 1 to the value in SRC, and place the result in DST. | |
2309 | */ | |
f90c0554 | 2310 | VM_DEFINE_OP (80, add1, "add1", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2311 | { |
2312 | ARGS1 (x); | |
2313 | ||
d2295ba5 MW |
2314 | /* Check for overflow. We must avoid overflow in the signed |
2315 | addition below, even if X is not an inum. */ | |
2316 | if (SCM_LIKELY ((scm_t_signed_bits) SCM_UNPACK (x) <= INUM_MAX - INUM_STEP)) | |
510ca126 AW |
2317 | { |
2318 | SCM result; | |
2319 | ||
d2295ba5 MW |
2320 | /* Add 1 to the integer without untagging. */ |
2321 | result = SCM_PACK ((scm_t_signed_bits) SCM_UNPACK (x) + INUM_STEP); | |
510ca126 AW |
2322 | |
2323 | if (SCM_LIKELY (SCM_I_INUMP (result))) | |
2324 | RETURN (result); | |
2325 | } | |
2326 | ||
2327 | SYNC_IP (); | |
2328 | RETURN (scm_sum (x, SCM_I_MAKINUM (1))); | |
2329 | } | |
2330 | ||
2331 | /* sub dst:8 a:8 b:8 | |
2332 | * | |
2333 | * Subtract B from A, and place the result in DST. | |
2334 | */ | |
f90c0554 | 2335 | VM_DEFINE_OP (81, sub, "sub", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2336 | { |
2337 | BINARY_INTEGER_OP (-, scm_difference); | |
2338 | } | |
2339 | ||
2340 | /* sub1 dst:12 src:12 | |
2341 | * | |
2342 | * Subtract 1 from SRC, and place the result in DST. | |
2343 | */ | |
f90c0554 | 2344 | VM_DEFINE_OP (82, sub1, "sub1", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2345 | { |
2346 | ARGS1 (x); | |
2347 | ||
d2295ba5 MW |
2348 | /* Check for overflow. We must avoid overflow in the signed |
2349 | subtraction below, even if X is not an inum. */ | |
2350 | if (SCM_LIKELY ((scm_t_signed_bits) SCM_UNPACK (x) >= INUM_MIN + INUM_STEP)) | |
510ca126 AW |
2351 | { |
2352 | SCM result; | |
2353 | ||
d2295ba5 MW |
2354 | /* Substract 1 from the integer without untagging. */ |
2355 | result = SCM_PACK ((scm_t_signed_bits) SCM_UNPACK (x) - INUM_STEP); | |
510ca126 AW |
2356 | |
2357 | if (SCM_LIKELY (SCM_I_INUMP (result))) | |
2358 | RETURN (result); | |
2359 | } | |
2360 | ||
2361 | SYNC_IP (); | |
2362 | RETURN (scm_difference (x, SCM_I_MAKINUM (1))); | |
2363 | } | |
2364 | ||
2365 | /* mul dst:8 a:8 b:8 | |
2366 | * | |
2367 | * Multiply A and B, and place the result in DST. | |
2368 | */ | |
f90c0554 | 2369 | VM_DEFINE_OP (83, mul, "mul", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2370 | { |
2371 | ARGS2 (x, y); | |
2372 | SYNC_IP (); | |
2373 | RETURN (scm_product (x, y)); | |
2374 | } | |
2375 | ||
2376 | /* div dst:8 a:8 b:8 | |
2377 | * | |
2378 | * Divide A by B, and place the result in DST. | |
2379 | */ | |
f90c0554 | 2380 | VM_DEFINE_OP (84, div, "div", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2381 | { |
2382 | ARGS2 (x, y); | |
2383 | SYNC_IP (); | |
2384 | RETURN (scm_divide (x, y)); | |
2385 | } | |
2386 | ||
2387 | /* quo dst:8 a:8 b:8 | |
2388 | * | |
2389 | * Divide A by B, and place the quotient in DST. | |
2390 | */ | |
f90c0554 | 2391 | VM_DEFINE_OP (85, quo, "quo", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2392 | { |
2393 | ARGS2 (x, y); | |
2394 | SYNC_IP (); | |
2395 | RETURN (scm_quotient (x, y)); | |
2396 | } | |
2397 | ||
2398 | /* rem dst:8 a:8 b:8 | |
2399 | * | |
2400 | * Divide A by B, and place the remainder in DST. | |
2401 | */ | |
f90c0554 | 2402 | VM_DEFINE_OP (86, rem, "rem", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2403 | { |
2404 | ARGS2 (x, y); | |
2405 | SYNC_IP (); | |
2406 | RETURN (scm_remainder (x, y)); | |
2407 | } | |
2408 | ||
2409 | /* mod dst:8 a:8 b:8 | |
2410 | * | |
2411 | * Place the modulo of A by B in DST. | |
2412 | */ | |
f90c0554 | 2413 | VM_DEFINE_OP (87, mod, "mod", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2414 | { |
2415 | ARGS2 (x, y); | |
2416 | SYNC_IP (); | |
2417 | RETURN (scm_modulo (x, y)); | |
2418 | } | |
2419 | ||
2420 | /* ash dst:8 a:8 b:8 | |
2421 | * | |
2422 | * Shift A arithmetically by B bits, and place the result in DST. | |
2423 | */ | |
f90c0554 | 2424 | VM_DEFINE_OP (88, ash, "ash", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2425 | { |
2426 | ARGS2 (x, y); | |
2427 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) | |
2428 | { | |
2429 | if (SCM_I_INUM (y) < 0) | |
2430 | /* Right shift, will be a fixnum. */ | |
0bd65965 MW |
2431 | RETURN (SCM_I_MAKINUM |
2432 | (SCM_SRS (SCM_I_INUM (x), | |
2433 | (-SCM_I_INUM (y) <= SCM_I_FIXNUM_BIT-1) | |
2434 | ? -SCM_I_INUM (y) : SCM_I_FIXNUM_BIT-1))); | |
510ca126 AW |
2435 | else |
2436 | /* Left shift. See comments in scm_ash. */ | |
2437 | { | |
2438 | scm_t_signed_bits nn, bits_to_shift; | |
2439 | ||
2440 | nn = SCM_I_INUM (x); | |
2441 | bits_to_shift = SCM_I_INUM (y); | |
2442 | ||
2443 | if (bits_to_shift < SCM_I_FIXNUM_BIT-1 | |
2444 | && ((scm_t_bits) | |
2445 | (SCM_SRS (nn, (SCM_I_FIXNUM_BIT-1 - bits_to_shift)) + 1) | |
2446 | <= 1)) | |
2447 | RETURN (SCM_I_MAKINUM (nn << bits_to_shift)); | |
2448 | /* fall through */ | |
2449 | } | |
2450 | /* fall through */ | |
2451 | } | |
2452 | SYNC_IP (); | |
2453 | RETURN (scm_ash (x, y)); | |
2454 | } | |
2455 | ||
2456 | /* logand dst:8 a:8 b:8 | |
2457 | * | |
2458 | * Place the bitwise AND of A and B into DST. | |
2459 | */ | |
f90c0554 | 2460 | VM_DEFINE_OP (89, logand, "logand", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2461 | { |
2462 | ARGS2 (x, y); | |
2463 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) | |
e7f64971 MW |
2464 | /* Compute bitwise AND without untagging */ |
2465 | RETURN (SCM_PACK (SCM_UNPACK (x) & SCM_UNPACK (y))); | |
510ca126 AW |
2466 | SYNC_IP (); |
2467 | RETURN (scm_logand (x, y)); | |
2468 | } | |
2469 | ||
2470 | /* logior dst:8 a:8 b:8 | |
2471 | * | |
2472 | * Place the bitwise inclusive OR of A with B in DST. | |
2473 | */ | |
f90c0554 | 2474 | VM_DEFINE_OP (90, logior, "logior", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2475 | { |
2476 | ARGS2 (x, y); | |
2477 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) | |
e7f64971 MW |
2478 | /* Compute bitwise OR without untagging */ |
2479 | RETURN (SCM_PACK (SCM_UNPACK (x) | SCM_UNPACK (y))); | |
510ca126 AW |
2480 | SYNC_IP (); |
2481 | RETURN (scm_logior (x, y)); | |
2482 | } | |
2483 | ||
2484 | /* logxor dst:8 a:8 b:8 | |
2485 | * | |
2486 | * Place the bitwise exclusive OR of A with B in DST. | |
2487 | */ | |
f90c0554 | 2488 | VM_DEFINE_OP (91, logxor, "logxor", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2489 | { |
2490 | ARGS2 (x, y); | |
2491 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) | |
2492 | RETURN (SCM_I_MAKINUM (SCM_I_INUM (x) ^ SCM_I_INUM (y))); | |
2493 | SYNC_IP (); | |
2494 | RETURN (scm_logxor (x, y)); | |
2495 | } | |
2496 | ||
4c906ad5 | 2497 | /* make-vector/immediate dst:8 length:8 init:8 |
607fe5a6 AW |
2498 | * |
2499 | * Make a short vector of known size and write it to DST. The vector | |
2500 | * will have space for LENGTH slots, an immediate value. They will be | |
2501 | * filled with the value in slot INIT. | |
2502 | */ | |
4c906ad5 | 2503 | VM_DEFINE_OP (92, make_vector_immediate, "make-vector/immediate", OP1 (U8_U8_U8_U8) | OP_DST) |
607fe5a6 AW |
2504 | { |
2505 | scm_t_uint8 dst, init; | |
2506 | scm_t_int32 length, n; | |
2507 | SCM val, vector; | |
2508 | ||
2509 | SCM_UNPACK_RTL_8_8_8 (op, dst, length, init); | |
2510 | ||
2511 | val = LOCAL_REF (init); | |
2512 | vector = scm_words (scm_tc7_vector | (length << 8), length + 1); | |
2513 | for (n = 0; n < length; n++) | |
2514 | SCM_SIMPLE_VECTOR_SET (vector, n, val); | |
2515 | LOCAL_SET (dst, vector); | |
2516 | NEXT (1); | |
2517 | } | |
2518 | ||
510ca126 AW |
2519 | /* vector-length dst:12 src:12 |
2520 | * | |
2521 | * Store the length of the vector in SRC in DST. | |
2522 | */ | |
4c906ad5 | 2523 | VM_DEFINE_OP (93, vector_length, "vector-length", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2524 | { |
2525 | ARGS1 (vect); | |
2526 | if (SCM_LIKELY (SCM_I_IS_VECTOR (vect))) | |
2527 | RETURN (SCM_I_MAKINUM (SCM_I_VECTOR_LENGTH (vect))); | |
2528 | else | |
2529 | { | |
2530 | SYNC_IP (); | |
2531 | RETURN (scm_vector_length (vect)); | |
2532 | } | |
2533 | } | |
2534 | ||
2535 | /* vector-ref dst:8 src:8 idx:8 | |
2536 | * | |
2537 | * Fetch the item at position IDX in the vector in SRC, and store it | |
2538 | * in DST. | |
2539 | */ | |
4c906ad5 | 2540 | VM_DEFINE_OP (94, vector_ref, "vector-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2541 | { |
2542 | scm_t_signed_bits i = 0; | |
2543 | ARGS2 (vect, idx); | |
2544 | if (SCM_LIKELY (SCM_I_IS_NONWEAK_VECTOR (vect) | |
2545 | && SCM_I_INUMP (idx) | |
2546 | && ((i = SCM_I_INUM (idx)) >= 0) | |
2547 | && i < SCM_I_VECTOR_LENGTH (vect))) | |
2548 | RETURN (SCM_I_VECTOR_ELTS (vect)[i]); | |
2549 | else | |
2550 | { | |
2551 | SYNC_IP (); | |
2552 | RETURN (scm_vector_ref (vect, idx)); | |
2553 | } | |
2554 | } | |
2555 | ||
4c906ad5 | 2556 | /* vector-ref/immediate dst:8 src:8 idx:8 |
510ca126 AW |
2557 | * |
2558 | * Fill DST with the item IDX elements into the vector at SRC. Useful | |
2559 | * for building data types using vectors. | |
2560 | */ | |
4c906ad5 | 2561 | VM_DEFINE_OP (95, vector_ref_immediate, "vector-ref/immediate", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2562 | { |
2563 | scm_t_uint8 dst, src, idx; | |
2564 | SCM v; | |
2565 | ||
2566 | SCM_UNPACK_RTL_8_8_8 (op, dst, src, idx); | |
2567 | v = LOCAL_REF (src); | |
2568 | if (SCM_LIKELY (SCM_I_IS_NONWEAK_VECTOR (v) | |
2569 | && idx < SCM_I_VECTOR_LENGTH (v))) | |
2570 | LOCAL_SET (dst, SCM_I_VECTOR_ELTS (LOCAL_REF (src))[idx]); | |
2571 | else | |
2572 | LOCAL_SET (dst, scm_c_vector_ref (v, idx)); | |
2573 | NEXT (1); | |
2574 | } | |
2575 | ||
2576 | /* vector-set! dst:8 idx:8 src:8 | |
2577 | * | |
2578 | * Store SRC into the vector DST at index IDX. | |
2579 | */ | |
4c906ad5 | 2580 | VM_DEFINE_OP (96, vector_set, "vector-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
2581 | { |
2582 | scm_t_uint8 dst, idx_var, src; | |
2583 | SCM vect, idx, val; | |
2584 | scm_t_signed_bits i = 0; | |
2585 | ||
2586 | SCM_UNPACK_RTL_8_8_8 (op, dst, idx_var, src); | |
2587 | vect = LOCAL_REF (dst); | |
2588 | idx = LOCAL_REF (idx_var); | |
2589 | val = LOCAL_REF (src); | |
2590 | ||
2591 | if (SCM_LIKELY (SCM_I_IS_NONWEAK_VECTOR (vect) | |
2592 | && SCM_I_INUMP (idx) | |
2593 | && ((i = SCM_I_INUM (idx)) >= 0) | |
2594 | && i < SCM_I_VECTOR_LENGTH (vect))) | |
2595 | SCM_I_VECTOR_WELTS (vect)[i] = val; | |
2596 | else | |
2597 | { | |
2598 | SYNC_IP (); | |
2599 | scm_vector_set_x (vect, idx, val); | |
2600 | } | |
2601 | NEXT (1); | |
2602 | } | |
2603 | ||
4c906ad5 | 2604 | /* vector-set!/immediate dst:8 idx:8 src:8 |
8ba3f20c AW |
2605 | * |
2606 | * Store SRC into the vector DST at index IDX. Here IDX is an | |
2607 | * immediate value. | |
2608 | */ | |
4c906ad5 | 2609 | VM_DEFINE_OP (97, vector_set_immediate, "vector-set!/immediate", OP1 (U8_U8_U8_U8)) |
8ba3f20c AW |
2610 | { |
2611 | scm_t_uint8 dst, idx, src; | |
2612 | SCM vect, val; | |
2613 | ||
2614 | SCM_UNPACK_RTL_8_8_8 (op, dst, idx, src); | |
2615 | vect = LOCAL_REF (dst); | |
2616 | val = LOCAL_REF (src); | |
2617 | ||
2618 | if (SCM_LIKELY (SCM_I_IS_NONWEAK_VECTOR (vect) | |
2619 | && idx < SCM_I_VECTOR_LENGTH (vect))) | |
2620 | SCM_I_VECTOR_WELTS (vect)[idx] = val; | |
2621 | else | |
2622 | { | |
2623 | SYNC_IP (); | |
2624 | scm_vector_set_x (vect, scm_from_uint8 (idx), val); | |
2625 | } | |
2626 | NEXT (1); | |
2627 | } | |
2628 | ||
510ca126 AW |
2629 | |
2630 | \f | |
2631 | ||
2632 | /* | |
2633 | * Structs and GOOPS | |
2634 | */ | |
2635 | ||
2636 | /* struct-vtable dst:12 src:12 | |
2637 | * | |
2638 | * Store the vtable of SRC into DST. | |
2639 | */ | |
4c906ad5 | 2640 | VM_DEFINE_OP (98, struct_vtable, "struct-vtable", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2641 | { |
2642 | ARGS1 (obj); | |
2643 | VM_VALIDATE_STRUCT (obj, "struct_vtable"); | |
2644 | RETURN (SCM_STRUCT_VTABLE (obj)); | |
2645 | } | |
2646 | ||
4c906ad5 | 2647 | /* allocate-struct/immediate dst:8 vtable:8 nfields:8 |
510ca126 | 2648 | * |
14d10292 AW |
2649 | * Allocate a new struct with VTABLE, and place it in DST. The struct |
2650 | * will be constructed with space for NFIELDS fields, which should | |
2651 | * correspond to the field count of the VTABLE. | |
510ca126 | 2652 | */ |
4c906ad5 | 2653 | VM_DEFINE_OP (99, allocate_struct_immediate, "allocate-struct/immediate", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 | 2654 | { |
14d10292 AW |
2655 | scm_t_uint8 dst, vtable, nfields; |
2656 | SCM ret; | |
510ca126 | 2657 | |
14d10292 | 2658 | SCM_UNPACK_RTL_8_8_8 (op, dst, vtable, nfields); |
510ca126 AW |
2659 | |
2660 | SYNC_IP (); | |
14d10292 | 2661 | ret = scm_allocate_struct (LOCAL_REF (vtable), SCM_I_MAKINUM (nfields)); |
510ca126 | 2662 | LOCAL_SET (dst, ret); |
14d10292 AW |
2663 | |
2664 | NEXT (1); | |
510ca126 | 2665 | } |
510ca126 | 2666 | |
4c906ad5 | 2667 | /* struct-ref/immediate dst:8 src:8 idx:8 |
510ca126 AW |
2668 | * |
2669 | * Fetch the item at slot IDX in the struct in SRC, and store it | |
4c906ad5 | 2670 | * in DST. IDX is an immediate unsigned 8-bit value. |
510ca126 | 2671 | */ |
4c906ad5 | 2672 | VM_DEFINE_OP (100, struct_ref_immediate, "struct-ref/immediate", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 | 2673 | { |
4c906ad5 AW |
2674 | scm_t_uint8 dst, src, idx; |
2675 | SCM obj; | |
2676 | ||
2677 | SCM_UNPACK_RTL_8_8_8 (op, dst, src, idx); | |
2678 | ||
2679 | obj = LOCAL_REF (src); | |
510ca126 AW |
2680 | |
2681 | if (SCM_LIKELY (SCM_STRUCTP (obj) | |
2682 | && SCM_STRUCT_VTABLE_FLAG_IS_SET (obj, | |
2683 | SCM_VTABLE_FLAG_SIMPLE) | |
4c906ad5 AW |
2684 | && idx < SCM_STRUCT_DATA_REF (SCM_STRUCT_VTABLE (obj), |
2685 | scm_vtable_index_size))) | |
2686 | RETURN (SCM_STRUCT_SLOT_REF (obj, idx)); | |
510ca126 AW |
2687 | |
2688 | SYNC_IP (); | |
4c906ad5 | 2689 | RETURN (scm_struct_ref (obj, SCM_I_MAKINUM (idx))); |
510ca126 AW |
2690 | } |
2691 | ||
4c906ad5 | 2692 | /* struct-set!/immediate dst:8 idx:8 src:8 |
510ca126 | 2693 | * |
4c906ad5 AW |
2694 | * Store SRC into the struct DST at slot IDX. IDX is an immediate |
2695 | * unsigned 8-bit value. | |
510ca126 | 2696 | */ |
4c906ad5 | 2697 | VM_DEFINE_OP (101, struct_set_immediate, "struct-set!/immediate", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
2698 | { |
2699 | scm_t_uint8 dst, idx, src; | |
4c906ad5 AW |
2700 | SCM obj, val; |
2701 | ||
510ca126 | 2702 | SCM_UNPACK_RTL_8_8_8 (op, dst, idx, src); |
4c906ad5 | 2703 | |
510ca126 | 2704 | obj = LOCAL_REF (dst); |
510ca126 | 2705 | val = LOCAL_REF (src); |
4c906ad5 | 2706 | |
510ca126 AW |
2707 | if (SCM_LIKELY (SCM_STRUCTP (obj) |
2708 | && SCM_STRUCT_VTABLE_FLAG_IS_SET (obj, | |
2709 | SCM_VTABLE_FLAG_SIMPLE) | |
2710 | && SCM_STRUCT_VTABLE_FLAG_IS_SET (obj, | |
2711 | SCM_VTABLE_FLAG_SIMPLE_RW) | |
4c906ad5 AW |
2712 | && idx < SCM_STRUCT_DATA_REF (SCM_STRUCT_VTABLE (obj), |
2713 | scm_vtable_index_size))) | |
510ca126 | 2714 | { |
4c906ad5 AW |
2715 | SCM_STRUCT_SLOT_SET (obj, idx, val); |
2716 | NEXT (1); | |
510ca126 AW |
2717 | } |
2718 | ||
2719 | SYNC_IP (); | |
4c906ad5 | 2720 | scm_struct_set_x (obj, SCM_I_MAKINUM (idx), val); |
510ca126 AW |
2721 | NEXT (1); |
2722 | } | |
2723 | ||
2724 | /* class-of dst:12 type:12 | |
2725 | * | |
2726 | * Store the vtable of SRC into DST. | |
2727 | */ | |
4c906ad5 | 2728 | VM_DEFINE_OP (102, class_of, "class-of", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2729 | { |
2730 | ARGS1 (obj); | |
2731 | if (SCM_INSTANCEP (obj)) | |
2732 | RETURN (SCM_CLASS_OF (obj)); | |
2733 | SYNC_IP (); | |
2734 | RETURN (scm_class_of (obj)); | |
2735 | } | |
2736 | ||
2737 | /* slot-ref dst:8 src:8 idx:8 | |
2738 | * | |
2739 | * Fetch the item at slot IDX in the struct in SRC, and store it in | |
2740 | * DST. Unlike struct-ref, IDX is an 8-bit immediate value, not an | |
2741 | * index into the stack. | |
2742 | */ | |
4c906ad5 | 2743 | VM_DEFINE_OP (103, slot_ref, "slot-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2744 | { |
2745 | scm_t_uint8 dst, src, idx; | |
2746 | SCM_UNPACK_RTL_8_8_8 (op, dst, src, idx); | |
2747 | LOCAL_SET (dst, | |
2748 | SCM_PACK (SCM_STRUCT_DATA (LOCAL_REF (src))[idx])); | |
2749 | NEXT (1); | |
2750 | } | |
2751 | ||
2752 | /* slot-set! dst:8 idx:8 src:8 | |
2753 | * | |
2754 | * Store SRC into slot IDX of the struct in DST. Unlike struct-set!, | |
2755 | * IDX is an 8-bit immediate value, not an index into the stack. | |
2756 | */ | |
4c906ad5 | 2757 | VM_DEFINE_OP (104, slot_set, "slot-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
2758 | { |
2759 | scm_t_uint8 dst, idx, src; | |
2760 | SCM_UNPACK_RTL_8_8_8 (op, dst, idx, src); | |
2761 | SCM_STRUCT_DATA (LOCAL_REF (dst))[idx] = SCM_UNPACK (LOCAL_REF (src)); | |
2762 | NEXT (1); | |
2763 | } | |
2764 | ||
2765 | ||
2766 | \f | |
2767 | ||
2768 | /* | |
2769 | * Arrays, packed uniform arrays, and bytevectors. | |
2770 | */ | |
2771 | ||
2772 | /* load-typed-array dst:8 type:8 shape:8 offset:32 len:32 | |
2773 | * | |
2774 | * Load the contiguous typed array located at OFFSET 32-bit words away | |
2775 | * from the instruction pointer, and store into DST. LEN is a byte | |
2776 | * length. OFFSET is signed. | |
2777 | */ | |
4c906ad5 | 2778 | VM_DEFINE_OP (105, load_typed_array, "load-typed-array", OP3 (U8_U8_U8_U8, N32, U32) | OP_DST) |
510ca126 AW |
2779 | { |
2780 | scm_t_uint8 dst, type, shape; | |
2781 | scm_t_int32 offset; | |
2782 | scm_t_uint32 len; | |
2783 | ||
2784 | SCM_UNPACK_RTL_8_8_8 (op, dst, type, shape); | |
2785 | offset = ip[1]; | |
2786 | len = ip[2]; | |
2787 | SYNC_IP (); | |
2788 | LOCAL_SET (dst, scm_from_contiguous_typed_array (LOCAL_REF (type), | |
2789 | LOCAL_REF (shape), | |
2790 | ip + offset, len)); | |
2791 | NEXT (3); | |
2792 | } | |
2793 | ||
2794 | /* make-array dst:12 type:12 _:8 fill:12 bounds:12 | |
2795 | * | |
2796 | * Make a new array with TYPE, FILL, and BOUNDS, storing it in DST. | |
2797 | */ | |
4c906ad5 | 2798 | VM_DEFINE_OP (106, make_array, "make-array", OP2 (U8_U12_U12, X8_U12_U12) | OP_DST) |
510ca126 AW |
2799 | { |
2800 | scm_t_uint16 dst, type, fill, bounds; | |
2801 | SCM_UNPACK_RTL_12_12 (op, dst, type); | |
2802 | SCM_UNPACK_RTL_12_12 (ip[1], fill, bounds); | |
2803 | SYNC_IP (); | |
2804 | LOCAL_SET (dst, scm_make_typed_array (LOCAL_REF (type), LOCAL_REF (fill), | |
2805 | LOCAL_REF (bounds))); | |
2806 | NEXT (2); | |
2807 | } | |
2808 | ||
2809 | /* bv-u8-ref dst:8 src:8 idx:8 | |
2810 | * bv-s8-ref dst:8 src:8 idx:8 | |
2811 | * bv-u16-ref dst:8 src:8 idx:8 | |
2812 | * bv-s16-ref dst:8 src:8 idx:8 | |
2813 | * bv-u32-ref dst:8 src:8 idx:8 | |
2814 | * bv-s32-ref dst:8 src:8 idx:8 | |
2815 | * bv-u64-ref dst:8 src:8 idx:8 | |
2816 | * bv-s64-ref dst:8 src:8 idx:8 | |
2817 | * bv-f32-ref dst:8 src:8 idx:8 | |
2818 | * bv-f64-ref dst:8 src:8 idx:8 | |
2819 | * | |
2820 | * Fetch the item at byte offset IDX in the bytevector SRC, and store | |
2821 | * it in DST. All accesses use native endianness. | |
2822 | */ | |
2823 | #define BV_FIXABLE_INT_REF(stem, fn_stem, type, size) \ | |
2824 | do { \ | |
2825 | scm_t_signed_bits i; \ | |
2826 | const scm_t_ ## type *int_ptr; \ | |
2827 | ARGS2 (bv, idx); \ | |
2828 | \ | |
2829 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-ref"); \ | |
2830 | i = SCM_I_INUM (idx); \ | |
2831 | int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
2832 | \ | |
2833 | if (SCM_LIKELY (SCM_I_INUMP (idx) \ | |
2834 | && (i >= 0) \ | |
2835 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
2836 | && (ALIGNED_P (int_ptr, scm_t_ ## type)))) \ | |
2837 | RETURN (SCM_I_MAKINUM (*int_ptr)); \ | |
2838 | else \ | |
2839 | { \ | |
2840 | SYNC_IP (); \ | |
2841 | RETURN (scm_bytevector_ ## fn_stem ## _ref (bv, idx)); \ | |
2842 | } \ | |
2843 | } while (0) | |
2844 | ||
2845 | #define BV_INT_REF(stem, type, size) \ | |
2846 | do { \ | |
2847 | scm_t_signed_bits i; \ | |
2848 | const scm_t_ ## type *int_ptr; \ | |
2849 | ARGS2 (bv, idx); \ | |
2850 | \ | |
2851 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-ref"); \ | |
2852 | i = SCM_I_INUM (idx); \ | |
2853 | int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
2854 | \ | |
2855 | if (SCM_LIKELY (SCM_I_INUMP (idx) \ | |
2856 | && (i >= 0) \ | |
2857 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
2858 | && (ALIGNED_P (int_ptr, scm_t_ ## type)))) \ | |
2859 | { \ | |
2860 | scm_t_ ## type x = *int_ptr; \ | |
2861 | if (SCM_FIXABLE (x)) \ | |
2862 | RETURN (SCM_I_MAKINUM (x)); \ | |
2863 | else \ | |
2864 | { \ | |
2865 | SYNC_IP (); \ | |
2866 | RETURN (scm_from_ ## type (x)); \ | |
2867 | } \ | |
2868 | } \ | |
2869 | else \ | |
2870 | { \ | |
2871 | SYNC_IP (); \ | |
2872 | RETURN (scm_bytevector_ ## stem ## _native_ref (bv, idx)); \ | |
2873 | } \ | |
2874 | } while (0) | |
2875 | ||
2876 | #define BV_FLOAT_REF(stem, fn_stem, type, size) \ | |
2877 | do { \ | |
2878 | scm_t_signed_bits i; \ | |
2879 | const type *float_ptr; \ | |
2880 | ARGS2 (bv, idx); \ | |
2881 | \ | |
2882 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-ref"); \ | |
2883 | i = SCM_I_INUM (idx); \ | |
2884 | float_ptr = (type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
2885 | \ | |
2886 | SYNC_IP (); \ | |
2887 | if (SCM_LIKELY (SCM_I_INUMP (idx) \ | |
2888 | && (i >= 0) \ | |
2889 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
2890 | && (ALIGNED_P (float_ptr, type)))) \ | |
2891 | RETURN (scm_from_double (*float_ptr)); \ | |
2892 | else \ | |
2893 | RETURN (scm_bytevector_ ## fn_stem ## _native_ref (bv, idx)); \ | |
2894 | } while (0) | |
2895 | ||
4c906ad5 | 2896 | VM_DEFINE_OP (107, bv_u8_ref, "bv-u8-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2897 | BV_FIXABLE_INT_REF (u8, u8, uint8, 1); |
2898 | ||
4c906ad5 | 2899 | VM_DEFINE_OP (108, bv_s8_ref, "bv-s8-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2900 | BV_FIXABLE_INT_REF (s8, s8, int8, 1); |
2901 | ||
4c906ad5 | 2902 | VM_DEFINE_OP (109, bv_u16_ref, "bv-u16-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2903 | BV_FIXABLE_INT_REF (u16, u16_native, uint16, 2); |
2904 | ||
4c906ad5 | 2905 | VM_DEFINE_OP (110, bv_s16_ref, "bv-s16-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2906 | BV_FIXABLE_INT_REF (s16, s16_native, int16, 2); |
2907 | ||
4c906ad5 | 2908 | VM_DEFINE_OP (111, bv_u32_ref, "bv-u32-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2909 | #if SIZEOF_VOID_P > 4 |
2910 | BV_FIXABLE_INT_REF (u32, u32_native, uint32, 4); | |
2911 | #else | |
2912 | BV_INT_REF (u32, uint32, 4); | |
2913 | #endif | |
2914 | ||
4c906ad5 | 2915 | VM_DEFINE_OP (112, bv_s32_ref, "bv-s32-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2916 | #if SIZEOF_VOID_P > 4 |
2917 | BV_FIXABLE_INT_REF (s32, s32_native, int32, 4); | |
2918 | #else | |
2919 | BV_INT_REF (s32, int32, 4); | |
2920 | #endif | |
2921 | ||
4c906ad5 | 2922 | VM_DEFINE_OP (113, bv_u64_ref, "bv-u64-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2923 | BV_INT_REF (u64, uint64, 8); |
2924 | ||
4c906ad5 | 2925 | VM_DEFINE_OP (114, bv_s64_ref, "bv-s64-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2926 | BV_INT_REF (s64, int64, 8); |
2927 | ||
4c906ad5 | 2928 | VM_DEFINE_OP (115, bv_f32_ref, "bv-f32-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2929 | BV_FLOAT_REF (f32, ieee_single, float, 4); |
2930 | ||
4c906ad5 | 2931 | VM_DEFINE_OP (116, bv_f64_ref, "bv-f64-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2932 | BV_FLOAT_REF (f64, ieee_double, double, 8); |
2933 | ||
2934 | /* bv-u8-set! dst:8 idx:8 src:8 | |
2935 | * bv-s8-set! dst:8 idx:8 src:8 | |
2936 | * bv-u16-set! dst:8 idx:8 src:8 | |
2937 | * bv-s16-set! dst:8 idx:8 src:8 | |
2938 | * bv-u32-set! dst:8 idx:8 src:8 | |
2939 | * bv-s32-set! dst:8 idx:8 src:8 | |
2940 | * bv-u64-set! dst:8 idx:8 src:8 | |
2941 | * bv-s64-set! dst:8 idx:8 src:8 | |
2942 | * bv-f32-set! dst:8 idx:8 src:8 | |
2943 | * bv-f64-set! dst:8 idx:8 src:8 | |
2944 | * | |
2945 | * Store SRC into the bytevector DST at byte offset IDX. Multibyte | |
2946 | * values are written using native endianness. | |
2947 | */ | |
2948 | #define BV_FIXABLE_INT_SET(stem, fn_stem, type, min, max, size) \ | |
2949 | do { \ | |
2950 | scm_t_uint8 dst, idx, src; \ | |
2951 | scm_t_signed_bits i, j = 0; \ | |
2952 | SCM bv, scm_idx, val; \ | |
2953 | scm_t_ ## type *int_ptr; \ | |
2954 | \ | |
2955 | SCM_UNPACK_RTL_8_8_8 (op, dst, idx, src); \ | |
2956 | bv = LOCAL_REF (dst); \ | |
2957 | scm_idx = LOCAL_REF (idx); \ | |
2958 | val = LOCAL_REF (src); \ | |
ecbef966 | 2959 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-set!"); \ |
510ca126 AW |
2960 | i = SCM_I_INUM (scm_idx); \ |
2961 | int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
2962 | \ | |
2963 | if (SCM_LIKELY (SCM_I_INUMP (scm_idx) \ | |
2964 | && (i >= 0) \ | |
2965 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
2966 | && (ALIGNED_P (int_ptr, scm_t_ ## type)) \ | |
2967 | && (SCM_I_INUMP (val)) \ | |
2968 | && ((j = SCM_I_INUM (val)) >= min) \ | |
2969 | && (j <= max))) \ | |
2970 | *int_ptr = (scm_t_ ## type) j; \ | |
2971 | else \ | |
2972 | { \ | |
2973 | SYNC_IP (); \ | |
2974 | scm_bytevector_ ## fn_stem ## _set_x (bv, scm_idx, val); \ | |
2975 | } \ | |
2976 | NEXT (1); \ | |
2977 | } while (0) | |
2978 | ||
2979 | #define BV_INT_SET(stem, type, size) \ | |
2980 | do { \ | |
2981 | scm_t_uint8 dst, idx, src; \ | |
2982 | scm_t_signed_bits i; \ | |
2983 | SCM bv, scm_idx, val; \ | |
2984 | scm_t_ ## type *int_ptr; \ | |
2985 | \ | |
2986 | SCM_UNPACK_RTL_8_8_8 (op, dst, idx, src); \ | |
2987 | bv = LOCAL_REF (dst); \ | |
2988 | scm_idx = LOCAL_REF (idx); \ | |
2989 | val = LOCAL_REF (src); \ | |
ecbef966 | 2990 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-set!"); \ |
510ca126 AW |
2991 | i = SCM_I_INUM (scm_idx); \ |
2992 | int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
2993 | \ | |
2994 | if (SCM_LIKELY (SCM_I_INUMP (scm_idx) \ | |
2995 | && (i >= 0) \ | |
2996 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
2997 | && (ALIGNED_P (int_ptr, scm_t_ ## type)))) \ | |
2998 | *int_ptr = scm_to_ ## type (val); \ | |
2999 | else \ | |
3000 | { \ | |
3001 | SYNC_IP (); \ | |
3002 | scm_bytevector_ ## stem ## _native_set_x (bv, scm_idx, val); \ | |
3003 | } \ | |
3004 | NEXT (1); \ | |
3005 | } while (0) | |
3006 | ||
3007 | #define BV_FLOAT_SET(stem, fn_stem, type, size) \ | |
3008 | do { \ | |
3009 | scm_t_uint8 dst, idx, src; \ | |
3010 | scm_t_signed_bits i; \ | |
3011 | SCM bv, scm_idx, val; \ | |
3012 | type *float_ptr; \ | |
3013 | \ | |
3014 | SCM_UNPACK_RTL_8_8_8 (op, dst, idx, src); \ | |
3015 | bv = LOCAL_REF (dst); \ | |
3016 | scm_idx = LOCAL_REF (idx); \ | |
3017 | val = LOCAL_REF (src); \ | |
ecbef966 | 3018 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-set!"); \ |
510ca126 AW |
3019 | i = SCM_I_INUM (scm_idx); \ |
3020 | float_ptr = (type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
3021 | \ | |
3022 | if (SCM_LIKELY (SCM_I_INUMP (scm_idx) \ | |
3023 | && (i >= 0) \ | |
3024 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
3025 | && (ALIGNED_P (float_ptr, type)))) \ | |
3026 | *float_ptr = scm_to_double (val); \ | |
3027 | else \ | |
3028 | { \ | |
3029 | SYNC_IP (); \ | |
3030 | scm_bytevector_ ## fn_stem ## _native_set_x (bv, scm_idx, val); \ | |
3031 | } \ | |
3032 | NEXT (1); \ | |
3033 | } while (0) | |
3034 | ||
4c906ad5 | 3035 | VM_DEFINE_OP (117, bv_u8_set, "bv-u8-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3036 | BV_FIXABLE_INT_SET (u8, u8, uint8, 0, SCM_T_UINT8_MAX, 1); |
3037 | ||
4c906ad5 | 3038 | VM_DEFINE_OP (118, bv_s8_set, "bv-s8-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3039 | BV_FIXABLE_INT_SET (s8, s8, int8, SCM_T_INT8_MIN, SCM_T_INT8_MAX, 1); |
3040 | ||
4c906ad5 | 3041 | VM_DEFINE_OP (119, bv_u16_set, "bv-u16-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3042 | BV_FIXABLE_INT_SET (u16, u16_native, uint16, 0, SCM_T_UINT16_MAX, 2); |
3043 | ||
4c906ad5 | 3044 | VM_DEFINE_OP (120, bv_s16_set, "bv-s16-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3045 | BV_FIXABLE_INT_SET (s16, s16_native, int16, SCM_T_INT16_MIN, SCM_T_INT16_MAX, 2); |
3046 | ||
4c906ad5 | 3047 | VM_DEFINE_OP (121, bv_u32_set, "bv-u32-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3048 | #if SIZEOF_VOID_P > 4 |
3049 | BV_FIXABLE_INT_SET (u32, u32_native, uint32, 0, SCM_T_UINT32_MAX, 4); | |
3050 | #else | |
3051 | BV_INT_SET (u32, uint32, 4); | |
3052 | #endif | |
3053 | ||
4c906ad5 | 3054 | VM_DEFINE_OP (122, bv_s32_set, "bv-s32-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3055 | #if SIZEOF_VOID_P > 4 |
3056 | BV_FIXABLE_INT_SET (s32, s32_native, int32, SCM_T_INT32_MIN, SCM_T_INT32_MAX, 4); | |
3057 | #else | |
3058 | BV_INT_SET (s32, int32, 4); | |
3059 | #endif | |
3060 | ||
4c906ad5 | 3061 | VM_DEFINE_OP (123, bv_u64_set, "bv-u64-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3062 | BV_INT_SET (u64, uint64, 8); |
3063 | ||
4c906ad5 | 3064 | VM_DEFINE_OP (124, bv_s64_set, "bv-s64-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3065 | BV_INT_SET (s64, int64, 8); |
3066 | ||
4c906ad5 | 3067 | VM_DEFINE_OP (125, bv_f32_set, "bv-f32-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3068 | BV_FLOAT_SET (f32, ieee_single, float, 4); |
3069 | ||
4c906ad5 | 3070 | VM_DEFINE_OP (126, bv_f64_set, "bv-f64-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3071 | BV_FLOAT_SET (f64, ieee_double, double, 8); |
3072 | ||
3073 | END_DISPATCH_SWITCH; | |
3074 | ||
3075 | vm_error_bad_instruction: | |
3076 | vm_error_bad_instruction (op); | |
3077 | ||
3078 | abort (); /* never reached */ | |
3079 | } | |
3080 | ||
3081 | ||
3082 | #undef ABORT_CONTINUATION_HOOK | |
3083 | #undef ALIGNED_P | |
3084 | #undef APPLY_HOOK | |
3085 | #undef ARGS1 | |
3086 | #undef ARGS2 | |
3087 | #undef BEGIN_DISPATCH_SWITCH | |
3088 | #undef BINARY_INTEGER_OP | |
3089 | #undef BR_ARITHMETIC | |
3090 | #undef BR_BINARY | |
3091 | #undef BR_NARGS | |
3092 | #undef BR_UNARY | |
3093 | #undef BV_FIXABLE_INT_REF | |
3094 | #undef BV_FIXABLE_INT_SET | |
3095 | #undef BV_FLOAT_REF | |
3096 | #undef BV_FLOAT_SET | |
3097 | #undef BV_INT_REF | |
3098 | #undef BV_INT_SET | |
3099 | #undef CACHE_REGISTER | |
3100 | #undef CHECK_OVERFLOW | |
3101 | #undef END_DISPATCH_SWITCH | |
3102 | #undef FREE_VARIABLE_REF | |
3103 | #undef INIT | |
3104 | #undef INUM_MAX | |
3105 | #undef INUM_MIN | |
3106 | #undef LOCAL_REF | |
3107 | #undef LOCAL_SET | |
3108 | #undef NEXT | |
3109 | #undef NEXT_HOOK | |
3110 | #undef NEXT_JUMP | |
3111 | #undef POP_CONTINUATION_HOOK | |
3112 | #undef PUSH_CONTINUATION_HOOK | |
3113 | #undef RESTORE_CONTINUATION_HOOK | |
3114 | #undef RETURN | |
3115 | #undef RETURN_ONE_VALUE | |
3116 | #undef RETURN_VALUE_LIST | |
3117 | #undef RUN_HOOK | |
3118 | #undef RUN_HOOK0 | |
3119 | #undef SYNC_ALL | |
3120 | #undef SYNC_BEFORE_GC | |
3121 | #undef SYNC_IP | |
3122 | #undef SYNC_REGISTER | |
3123 | #undef VARIABLE_BOUNDP | |
3124 | #undef VARIABLE_REF | |
3125 | #undef VARIABLE_SET | |
3126 | #undef VM_CHECK_FREE_VARIABLE | |
3127 | #undef VM_CHECK_OBJECT | |
3128 | #undef VM_CHECK_UNDERFLOW | |
3129 | #undef VM_DEFINE_OP | |
3130 | #undef VM_INSTRUCTION_TO_LABEL | |
3131 | #undef VM_USE_HOOKS | |
3132 | #undef VM_VALIDATE_BYTEVECTOR | |
3133 | #undef VM_VALIDATE_PAIR | |
3134 | #undef VM_VALIDATE_STRUCT | |
3135 | ||
3136 | /* | |
3137 | (defun renumber-ops () | |
3138 | "start from top of buffer and renumber 'VM_DEFINE_FOO (\n' sequences" | |
3139 | (interactive "") | |
3140 | (save-excursion | |
3141 | (let ((counter -1)) (goto-char (point-min)) | |
3142 | (while (re-search-forward "^ *VM_DEFINE_[^ ]+ (\\([^,]+\\)," (point-max) t) | |
3143 | (replace-match | |
3144 | (number-to-string (setq counter (1+ counter))) | |
3145 | t t nil 1))))) | |
3146 | (renumber-ops) | |
3147 | */ | |
17e90c5e KN |
3148 | /* |
3149 | Local Variables: | |
3150 | c-file-style: "gnu" | |
3151 | End: | |
3152 | */ |