Commit | Line | Data |
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27c7c630 | 1 | /* Copyright (C) 2001, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc. |
a98cef7e | 2 | * |
560b9c25 | 3 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
4 | * modify it under the terms of the GNU Lesser General Public License |
5 | * as published by the Free Software Foundation; either version 3 of | |
6 | * the License, or (at your option) any later version. | |
a98cef7e | 7 | * |
53befeb7 NJ |
8 | * This library is distributed in the hope that it will be useful, but |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
560b9c25 AW |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
11 | * Lesser General Public License for more details. | |
a98cef7e | 12 | * |
560b9c25 AW |
13 | * You should have received a copy of the GNU Lesser General Public |
14 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
16 | * 02110-1301 USA | |
560b9c25 | 17 | */ |
a98cef7e | 18 | |
510ca126 AW |
19 | /* This file is included in vm.c multiple times. */ |
20 | ||
21 | ||
22 | /* Virtual Machine | |
23 | ||
24 | This file contains two virtual machines. First, the old one -- the | |
25 | one that is currently used, and corresponds to Guile 2.0. It's a | |
26 | stack machine, meaning that most instructions pop their operands from | |
27 | the top of the stack, and push results there too. | |
28 | ||
29 | Following it is the new virtual machine. It's a register machine, | |
30 | meaning that intructions address their operands by index, and store | |
31 | results in indexed slots as well. Those slots are on the stack. | |
32 | It's somewhat confusing to call it a register machine, given that the | |
33 | values are on the stack. Perhaps it needs a new name. | |
34 | ||
35 | Anyway, things are in a transitional state. We're going to try to | |
36 | avoid munging the old VM very much while we flesh out the new one. | |
37 | We're also going to try to make them interoperable, as much as | |
38 | possible -- to have the old VM be able to call procedures for the new | |
39 | VM, and vice versa. This should ease the bootstrapping process. */ | |
40 | ||
41 | ||
42 | /* The old VM. */ | |
43 | static SCM VM_NAME (SCM, SCM, SCM*, int); | |
44 | /* The new VM. */ | |
45 | static SCM RTL_VM_NAME (SCM, SCM, SCM*, size_t); | |
46 | ||
6d14383e AW |
47 | |
48 | #if (VM_ENGINE == SCM_VM_REGULAR_ENGINE) | |
ff3968c2 | 49 | # define VM_USE_HOOKS 0 /* Various hooks */ |
6d14383e | 50 | #elif (VM_ENGINE == SCM_VM_DEBUG_ENGINE) |
ff3968c2 | 51 | # define VM_USE_HOOKS 1 |
6d14383e | 52 | #else |
ff3968c2 | 53 | # error unknown debug engine VM_ENGINE |
6d14383e | 54 | #endif |
a98cef7e | 55 | |
8dd6bfa7 AW |
56 | /* Assign some registers by hand. There used to be a bigger list here, |
57 | but it was never tested, and in the case of x86-32, was a source of | |
58 | compilation failures. It can be revived if it's useful, but my naive | |
59 | hope is that simply annotating the locals with "register" will be a | |
60 | sufficient hint to the compiler. */ | |
eac12024 | 61 | #ifdef __GNUC__ |
8dd6bfa7 | 62 | # if defined __x86_64__ |
eac12024 AW |
63 | /* GCC 4.6 chooses %rbp for IP_REG and %rbx for SP_REG, which works |
64 | well. Tell it to keep the jump table in a r12, which is | |
65 | callee-saved. */ | |
8dd6bfa7 AW |
66 | # define JT_REG asm ("r12") |
67 | # endif | |
eac12024 AW |
68 | #endif |
69 | ||
70 | #ifndef IP_REG | |
8dd6bfa7 | 71 | # define IP_REG |
eac12024 AW |
72 | #endif |
73 | #ifndef SP_REG | |
8dd6bfa7 | 74 | # define SP_REG |
eac12024 AW |
75 | #endif |
76 | #ifndef FP_REG | |
8dd6bfa7 | 77 | # define FP_REG |
eac12024 AW |
78 | #endif |
79 | #ifndef JT_REG | |
8dd6bfa7 | 80 | # define JT_REG |
eac12024 AW |
81 | #endif |
82 | ||
27c7c630 AW |
83 | #define VM_ASSERT(condition, handler) \ |
84 | do { \ | |
85 | if (SCM_UNLIKELY (!(condition))) \ | |
86 | { \ | |
87 | SYNC_ALL(); \ | |
88 | handler; \ | |
89 | } \ | |
90 | } while (0) | |
eac12024 AW |
91 | |
92 | #ifdef VM_ENABLE_ASSERTIONS | |
93 | # define ASSERT(condition) VM_ASSERT (condition, abort()) | |
94 | #else | |
95 | # define ASSERT(condition) | |
96 | #endif | |
97 | ||
c850a0ff AW |
98 | #if VM_USE_HOOKS |
99 | #define RUN_HOOK(h, args, n) \ | |
100 | do { \ | |
101 | if (SCM_UNLIKELY (vp->trace_level > 0)) \ | |
102 | { \ | |
103 | SYNC_REGISTER (); \ | |
104 | vm_dispatch_hook (vm, h, args, n); \ | |
105 | } \ | |
106 | } while (0) | |
107 | #else | |
108 | #define RUN_HOOK(h, args, n) | |
109 | #endif | |
110 | #define RUN_HOOK0(h) RUN_HOOK(h, NULL, 0) | |
111 | ||
112 | #define APPLY_HOOK() \ | |
113 | RUN_HOOK0 (SCM_VM_APPLY_HOOK) | |
114 | #define PUSH_CONTINUATION_HOOK() \ | |
115 | RUN_HOOK0 (SCM_VM_PUSH_CONTINUATION_HOOK) | |
116 | #define POP_CONTINUATION_HOOK(vals, n) \ | |
117 | RUN_HOOK (SCM_VM_POP_CONTINUATION_HOOK, vals, n) | |
118 | #define NEXT_HOOK() \ | |
119 | RUN_HOOK0 (SCM_VM_NEXT_HOOK) | |
120 | #define ABORT_CONTINUATION_HOOK(vals, n) \ | |
121 | RUN_HOOK (SCM_VM_ABORT_CONTINUATION_HOOK, vals, n) | |
122 | #define RESTORE_CONTINUATION_HOOK() \ | |
123 | RUN_HOOK0 (SCM_VM_RESTORE_CONTINUATION_HOOK) | |
124 | ||
125 | #define VM_HANDLE_INTERRUPTS \ | |
126 | SCM_ASYNC_TICK_WITH_CODE (current_thread, SYNC_REGISTER ()) | |
127 | ||
128 | ||
129 | \f | |
eac12024 AW |
130 | |
131 | /* Cache the VM's instruction, stack, and frame pointer in local variables. */ | |
132 | #define CACHE_REGISTER() \ | |
133 | { \ | |
134 | ip = vp->ip; \ | |
135 | sp = vp->sp; \ | |
136 | fp = vp->fp; \ | |
137 | } | |
138 | ||
139 | /* Update the registers in VP, a pointer to the current VM. This must be done | |
140 | at least before any GC invocation so that `vp->sp' is up-to-date and the | |
141 | whole stack gets marked. */ | |
142 | #define SYNC_REGISTER() \ | |
143 | { \ | |
144 | vp->ip = ip; \ | |
145 | vp->sp = sp; \ | |
146 | vp->fp = fp; \ | |
147 | } | |
148 | ||
149 | /* FIXME */ | |
150 | #define ASSERT_VARIABLE(x) \ | |
27c7c630 | 151 | VM_ASSERT (SCM_VARIABLEP (x), abort()) |
eac12024 | 152 | #define ASSERT_BOUND_VARIABLE(x) \ |
27c7c630 AW |
153 | VM_ASSERT (SCM_VARIABLEP (x) \ |
154 | && !scm_is_eq (SCM_VARIABLE_REF (x), SCM_UNDEFINED), \ | |
155 | abort()) | |
eac12024 AW |
156 | |
157 | #ifdef VM_ENABLE_PARANOID_ASSERTIONS | |
158 | #define CHECK_IP() \ | |
159 | do { if (ip < bp->base || ip - bp->base > bp->len) abort (); } while (0) | |
160 | #define ASSERT_ALIGNED_PROCEDURE() \ | |
161 | do { if ((scm_t_bits)bp % 8) abort (); } while (0) | |
162 | #define ASSERT_BOUND(x) \ | |
27c7c630 | 163 | VM_ASSERT (!scm_is_eq ((x), SCM_UNDEFINED), abort()) |
eac12024 AW |
164 | #else |
165 | #define CHECK_IP() | |
166 | #define ASSERT_ALIGNED_PROCEDURE() | |
167 | #define ASSERT_BOUND(x) | |
168 | #endif | |
169 | ||
eac12024 AW |
170 | /* Cache the object table and free variables. */ |
171 | #define CACHE_PROGRAM() \ | |
172 | { \ | |
173 | if (bp != SCM_PROGRAM_DATA (program)) { \ | |
174 | bp = SCM_PROGRAM_DATA (program); \ | |
175 | ASSERT_ALIGNED_PROCEDURE (); \ | |
176 | if (SCM_I_IS_VECTOR (SCM_PROGRAM_OBJTABLE (program))) { \ | |
177 | objects = SCM_I_VECTOR_WELTS (SCM_PROGRAM_OBJTABLE (program)); \ | |
eac12024 AW |
178 | } else { \ |
179 | objects = NULL; \ | |
eac12024 AW |
180 | } \ |
181 | } \ | |
182 | } | |
183 | ||
184 | #define SYNC_BEFORE_GC() \ | |
185 | { \ | |
186 | SYNC_REGISTER (); \ | |
187 | } | |
188 | ||
189 | #define SYNC_ALL() \ | |
190 | { \ | |
191 | SYNC_REGISTER (); \ | |
192 | } | |
193 | ||
194 | \f | |
195 | /* | |
196 | * Error check | |
197 | */ | |
198 | ||
199 | /* Accesses to a program's object table. */ | |
eac12024 | 200 | #define CHECK_OBJECT(_num) |
eac12024 | 201 | #define CHECK_FREE_VARIABLE(_num) |
eac12024 AW |
202 | |
203 | \f | |
eac12024 AW |
204 | /* |
205 | * Stack operation | |
206 | */ | |
207 | ||
208 | #ifdef VM_ENABLE_STACK_NULLING | |
209 | # define CHECK_STACK_LEAKN(_n) ASSERT (!sp[_n]); | |
210 | # define CHECK_STACK_LEAK() CHECK_STACK_LEAKN(1) | |
211 | # define NULLSTACK(_n) { int __x = _n; CHECK_STACK_LEAKN (_n+1); while (__x > 0) sp[__x--] = NULL; } | |
212 | /* If you have a nonlocal exit in a pre-wind proc while invoking a continuation | |
213 | inside a dynwind (phew!), the stack is fully rewound but vm_reset_stack for | |
214 | that continuation doesn't have a chance to run. It's not important on a | |
215 | semantic level, but it does mess up our stack nulling -- so this macro is to | |
216 | fix that. */ | |
217 | # define NULLSTACK_FOR_NONLOCAL_EXIT() if (vp->sp > sp) NULLSTACK (vp->sp - sp); | |
218 | #else | |
219 | # define CHECK_STACK_LEAKN(_n) | |
220 | # define CHECK_STACK_LEAK() | |
221 | # define NULLSTACK(_n) | |
222 | # define NULLSTACK_FOR_NONLOCAL_EXIT() | |
223 | #endif | |
224 | ||
225 | /* For this check, we don't use VM_ASSERT, because that leads to a | |
226 | per-site SYNC_ALL, which is too much code growth. The real problem | |
227 | of course is having to check for overflow all the time... */ | |
228 | #define CHECK_OVERFLOW() \ | |
229 | do { if (SCM_UNLIKELY (sp >= stack_limit)) goto handle_overflow; } while (0) | |
230 | ||
231 | #ifdef VM_CHECK_UNDERFLOW | |
232 | #define PRE_CHECK_UNDERFLOW(N) \ | |
233 | VM_ASSERT (sp - (N) > SCM_FRAME_UPPER_ADDRESS (fp), vm_error_stack_underflow ()) | |
234 | #define CHECK_UNDERFLOW() PRE_CHECK_UNDERFLOW (0) | |
235 | #else | |
236 | #define PRE_CHECK_UNDERFLOW(N) /* nop */ | |
237 | #define CHECK_UNDERFLOW() /* nop */ | |
238 | #endif | |
239 | ||
240 | ||
241 | #define PUSH(x) do { sp++; CHECK_OVERFLOW (); *sp = x; } while (0) | |
242 | #define DROP() do { sp--; CHECK_UNDERFLOW (); NULLSTACK (1); } while (0) | |
243 | #define DROPN(_n) do { sp -= (_n); CHECK_UNDERFLOW (); NULLSTACK (_n); } while (0) | |
244 | #define POP(x) do { PRE_CHECK_UNDERFLOW (1); x = *sp--; NULLSTACK (1); } while (0) | |
245 | #define POP2(x,y) do { PRE_CHECK_UNDERFLOW (2); x = *sp--; y = *sp--; NULLSTACK (2); } while (0) | |
246 | #define POP3(x,y,z) do { PRE_CHECK_UNDERFLOW (3); x = *sp--; y = *sp--; z = *sp--; NULLSTACK (3); } while (0) | |
247 | ||
eac12024 AW |
248 | /* Pop the N objects on top of the stack and push a list that contains |
249 | them. */ | |
250 | #define POP_LIST(n) \ | |
251 | do \ | |
252 | { \ | |
253 | int i; \ | |
254 | SCM l = SCM_EOL, x; \ | |
52182d52 | 255 | SYNC_BEFORE_GC (); \ |
eac12024 AW |
256 | for (i = n; i; i--) \ |
257 | { \ | |
258 | POP (x); \ | |
52182d52 | 259 | l = scm_cons (x, l); \ |
eac12024 AW |
260 | } \ |
261 | PUSH (l); \ | |
262 | } while (0) | |
263 | ||
264 | /* The opposite: push all of the elements in L onto the list. */ | |
265 | #define PUSH_LIST(l, NILP) \ | |
266 | do \ | |
267 | { \ | |
268 | for (; scm_is_pair (l); l = SCM_CDR (l)) \ | |
269 | PUSH (SCM_CAR (l)); \ | |
270 | VM_ASSERT (NILP (l), vm_error_improper_list (l)); \ | |
271 | } while (0) | |
272 | ||
273 | \f | |
eac12024 AW |
274 | /* |
275 | * Instruction operation | |
276 | */ | |
277 | ||
278 | #define FETCH() (*ip++) | |
279 | #define FETCH_LENGTH(len) do { len=*ip++; len<<=8; len+=*ip++; len<<=8; len+=*ip++; } while (0) | |
280 | ||
281 | #undef NEXT_JUMP | |
282 | #ifdef HAVE_LABELS_AS_VALUES | |
27c7c630 | 283 | # define NEXT_JUMP() goto *jump_table[FETCH () & SCM_VM_INSTRUCTION_MASK] |
eac12024 | 284 | #else |
27c7c630 | 285 | # define NEXT_JUMP() goto vm_start |
eac12024 AW |
286 | #endif |
287 | ||
288 | #define NEXT \ | |
289 | { \ | |
290 | NEXT_HOOK (); \ | |
291 | CHECK_STACK_LEAK (); \ | |
292 | NEXT_JUMP (); \ | |
293 | } | |
294 | ||
295 | \f | |
296 | /* See frames.h for the layout of stack frames */ | |
297 | /* When this is called, bp points to the new program data, | |
298 | and the arguments are already on the stack */ | |
299 | #define DROP_FRAME() \ | |
300 | { \ | |
301 | sp -= 3; \ | |
302 | NULLSTACK (3); \ | |
303 | CHECK_UNDERFLOW (); \ | |
304 | } | |
305 | ||
238e7a11 | 306 | |
a98cef7e | 307 | static SCM |
7656f194 | 308 | VM_NAME (SCM vm, SCM program, SCM *argv, int nargs) |
a98cef7e | 309 | { |
17e90c5e | 310 | /* VM registers */ |
2fb924f6 | 311 | register scm_t_uint8 *ip IP_REG; /* instruction pointer */ |
17e90c5e KN |
312 | register SCM *sp SP_REG; /* stack pointer */ |
313 | register SCM *fp FP_REG; /* frame pointer */ | |
7656f194 | 314 | struct scm_vm *vp = SCM_VM_DATA (vm); |
a98cef7e | 315 | |
d608d68d | 316 | /* Cache variables */ |
53e28ed9 | 317 | struct scm_objcode *bp = NULL; /* program base pointer */ |
17e90c5e | 318 | SCM *objects = NULL; /* constant objects */ |
3d5ee0cd | 319 | SCM *stack_limit = vp->stack_limit; /* stack limit address */ |
2d026f04 | 320 | |
a2a6c0e3 | 321 | scm_i_thread *current_thread = SCM_I_CURRENT_THREAD; |
a98cef7e | 322 | |
d608d68d | 323 | /* Internal variables */ |
ef24c01b | 324 | int nvalues = 0; |
9d381ba4 AW |
325 | scm_i_jmp_buf registers; /* used for prompts */ |
326 | ||
53e28ed9 | 327 | #ifdef HAVE_LABELS_AS_VALUES |
37a5970c | 328 | static const void **jump_table_pointer = NULL; |
e06e857c | 329 | #endif |
37a5970c | 330 | |
e06e857c | 331 | #ifdef HAVE_LABELS_AS_VALUES |
37a5970c LC |
332 | register const void **jump_table JT_REG; |
333 | ||
334 | if (SCM_UNLIKELY (!jump_table_pointer)) | |
53e28ed9 AW |
335 | { |
336 | int i; | |
37a5970c | 337 | jump_table_pointer = malloc (SCM_VM_NUM_INSTRUCTIONS * sizeof (void*)); |
53e28ed9 | 338 | for (i = 0; i < SCM_VM_NUM_INSTRUCTIONS; i++) |
37a5970c | 339 | jump_table_pointer[i] = &&vm_error_bad_instruction; |
53e28ed9 | 340 | #define VM_INSTRUCTION_TO_LABEL 1 |
37a5970c | 341 | #define jump_table jump_table_pointer |
aeeff258 AW |
342 | #include <libguile/vm-expand.h> |
343 | #include <libguile/vm-i-system.i> | |
344 | #include <libguile/vm-i-scheme.i> | |
345 | #include <libguile/vm-i-loader.i> | |
37a5970c | 346 | #undef jump_table |
53e28ed9 AW |
347 | #undef VM_INSTRUCTION_TO_LABEL |
348 | } | |
37a5970c LC |
349 | |
350 | /* Attempt to keep JUMP_TABLE_POINTER in a register. This saves one | |
351 | load instruction at each instruction dispatch. */ | |
352 | jump_table = jump_table_pointer; | |
53e28ed9 | 353 | #endif |
9d381ba4 AW |
354 | |
355 | if (SCM_I_SETJMP (registers)) | |
356 | { | |
357 | /* Non-local return. Cache the VM registers back from the vp, and | |
358 | go to the handler. | |
359 | ||
360 | Note, at this point, we must assume that any variable local to | |
361 | vm_engine that can be assigned *has* been assigned. So we need to pull | |
362 | all our state back from the ip/fp/sp. | |
363 | */ | |
364 | CACHE_REGISTER (); | |
365 | program = SCM_FRAME_PROGRAM (fp); | |
366 | CACHE_PROGRAM (); | |
367 | /* The stack contains the values returned to this continuation, | |
368 | along with a number-of-values marker -- like an MV return. */ | |
c850a0ff | 369 | ABORT_CONTINUATION_HOOK (sp - SCM_I_INUM (*sp), SCM_I_INUM (*sp)); |
9d381ba4 AW |
370 | NEXT; |
371 | } | |
53e28ed9 | 372 | |
67b699cc | 373 | CACHE_REGISTER (); |
27319ffa AW |
374 | |
375 | /* Since it's possible to receive the arguments on the stack itself, | |
376 | and indeed the RTL VM invokes us that way, shuffle up the | |
377 | arguments first. */ | |
378 | VM_ASSERT (sp + 8 + nargs < stack_limit, vm_error_too_many_args (nargs)); | |
379 | { | |
380 | int i; | |
381 | for (i = nargs - 1; i >= 0; i--) | |
382 | sp[9 + i] = argv[i]; | |
383 | } | |
384 | ||
385 | /* Initial frame */ | |
67b699cc AW |
386 | PUSH (SCM_PACK (fp)); /* dynamic link */ |
387 | PUSH (SCM_PACK (0)); /* mvra */ | |
388 | PUSH (SCM_PACK (ip)); /* ra */ | |
389 | PUSH (boot_continuation); | |
390 | fp = sp + 1; | |
391 | ip = SCM_C_OBJCODE_BASE (SCM_PROGRAM_DATA (boot_continuation)); | |
392 | ||
393 | /* MV-call frame, function & arguments */ | |
394 | PUSH (SCM_PACK (fp)); /* dynamic link */ | |
395 | PUSH (SCM_PACK (ip + 1)); /* mvra */ | |
396 | PUSH (SCM_PACK (ip)); /* ra */ | |
397 | PUSH (program); | |
398 | fp = sp + 1; | |
27319ffa | 399 | sp += nargs; |
67b699cc AW |
400 | |
401 | PUSH_CONTINUATION_HOOK (); | |
402 | ||
403 | apply: | |
404 | program = fp[-1]; | |
405 | if (!SCM_PROGRAM_P (program)) | |
406 | { | |
407 | if (SCM_STRUCTP (program) && SCM_STRUCT_APPLICABLE_P (program)) | |
408 | fp[-1] = SCM_STRUCT_PROCEDURE (program); | |
510ca126 AW |
409 | else if (SCM_HAS_TYP7 (program, scm_tc7_rtl_program)) |
410 | { | |
411 | SCM ret; | |
412 | SYNC_ALL (); | |
413 | ||
414 | ret = RTL_VM_NAME (vm, program, fp, sp - fp + 1); | |
415 | ||
416 | NULLSTACK_FOR_NONLOCAL_EXIT (); | |
417 | ||
418 | if (SCM_UNLIKELY (SCM_VALUESP (ret))) | |
419 | { | |
420 | /* multiple values returned to continuation */ | |
421 | ret = scm_struct_ref (ret, SCM_INUM0); | |
422 | nvalues = scm_ilength (ret); | |
423 | PUSH_LIST (ret, scm_is_null); | |
424 | goto vm_return_values; | |
425 | } | |
426 | else | |
427 | { | |
428 | PUSH (ret); | |
429 | goto vm_return; | |
430 | } | |
431 | } | |
968a9add | 432 | else if (SCM_HAS_TYP7 (program, scm_tc7_smob) |
67b699cc AW |
433 | && SCM_SMOB_APPLICABLE_P (program)) |
434 | { | |
435 | /* (smob arg0 ... argN) => (apply-smob smob arg0 ... argN) */ | |
436 | int i; | |
437 | PUSH (SCM_BOOL_F); | |
438 | for (i = sp - fp; i >= 0; i--) | |
439 | fp[i] = fp[i - 1]; | |
968a9add | 440 | fp[-1] = SCM_SMOB_DESCRIPTOR (program).apply_trampoline; |
67b699cc AW |
441 | } |
442 | else | |
443 | { | |
444 | SYNC_ALL(); | |
445 | vm_error_wrong_type_apply (program); | |
446 | } | |
447 | goto apply; | |
448 | } | |
449 | ||
450 | CACHE_PROGRAM (); | |
451 | ip = SCM_C_OBJCODE_BASE (bp); | |
452 | ||
453 | APPLY_HOOK (); | |
a98cef7e KN |
454 | |
455 | /* Let's go! */ | |
53e28ed9 | 456 | NEXT; |
a98cef7e KN |
457 | |
458 | #ifndef HAVE_LABELS_AS_VALUES | |
17e90c5e | 459 | vm_start: |
53e28ed9 | 460 | switch ((*ip++) & SCM_VM_INSTRUCTION_MASK) { |
a98cef7e KN |
461 | #endif |
462 | ||
83495480 AW |
463 | #include "vm-expand.h" |
464 | #include "vm-i-system.c" | |
465 | #include "vm-i-scheme.c" | |
466 | #include "vm-i-loader.c" | |
a98cef7e KN |
467 | |
468 | #ifndef HAVE_LABELS_AS_VALUES | |
53e28ed9 AW |
469 | default: |
470 | goto vm_error_bad_instruction; | |
a98cef7e KN |
471 | } |
472 | #endif | |
473 | ||
53bdfcf0 | 474 | abort (); /* never reached */ |
a52b2d3d | 475 | |
53bdfcf0 AW |
476 | vm_error_bad_instruction: |
477 | vm_error_bad_instruction (ip[-1]); | |
478 | abort (); /* never reached */ | |
17e90c5e | 479 | |
53bdfcf0 AW |
480 | handle_overflow: |
481 | SYNC_ALL (); | |
482 | vm_error_stack_overflow (vp); | |
a98cef7e KN |
483 | abort (); /* never reached */ |
484 | } | |
6d14383e | 485 | |
a0ec1ca1 AW |
486 | #undef ALIGNED_P |
487 | #undef CACHE_REGISTER | |
488 | #undef CHECK_OVERFLOW | |
a0ec1ca1 AW |
489 | #undef FUNC2 |
490 | #undef INIT | |
491 | #undef INUM_MAX | |
492 | #undef INUM_MIN | |
493 | #undef jump_table | |
494 | #undef LOCAL_REF | |
495 | #undef LOCAL_SET | |
496 | #undef NEXT | |
497 | #undef NEXT_JUMP | |
498 | #undef REL | |
499 | #undef RETURN | |
500 | #undef RETURN_ONE_VALUE | |
501 | #undef RETURN_VALUE_LIST | |
a0ec1ca1 AW |
502 | #undef SYNC_ALL |
503 | #undef SYNC_BEFORE_GC | |
504 | #undef SYNC_IP | |
505 | #undef SYNC_REGISTER | |
506 | #undef VARIABLE_BOUNDP | |
507 | #undef VARIABLE_REF | |
508 | #undef VARIABLE_SET | |
509 | #undef VM_DEFINE_OP | |
510 | #undef VM_INSTRUCTION_TO_LABEL | |
17e90c5e | 511 | |
510ca126 AW |
512 | |
513 | \f | |
514 | ||
515 | /* Virtual Machine | |
516 | ||
517 | This is Guile's new virtual machine. When I say "new", I mean | |
518 | relative to the current virtual machine. At some point it will | |
519 | become "the" virtual machine, and we'll delete this paragraph. As | |
520 | such, the rest of the comments speak as if there's only one VM. | |
7396d216 AW |
521 | In difference from the old VM, local 0 is the procedure, and the |
522 | first argument is local 1. At some point in the future we should | |
523 | change the fp to point to the procedure and not to local 1. | |
510ca126 AW |
524 | |
525 | <more overview here> | |
526 | */ | |
527 | ||
528 | ||
529 | /* The VM has three state bits: the instruction pointer (IP), the frame | |
530 | pointer (FP), and the top-of-stack pointer (SP). We cache the first | |
531 | two of these in machine registers, local to the VM, because they are | |
532 | used extensively by the VM. As the SP is used more by code outside | |
533 | the VM than by the VM itself, we don't bother caching it locally. | |
534 | ||
535 | Since the FP changes infrequently, relative to the IP, we keep vp->fp | |
536 | in sync with the local FP. This would be a big lose for the IP, | |
537 | though, so instead of updating vp->ip all the time, we call SYNC_IP | |
538 | whenever we would need to know the IP of the top frame. In practice, | |
539 | we need to SYNC_IP whenever we call out of the VM to a function that | |
540 | would like to walk the stack, perhaps as the result of an | |
541 | exception. */ | |
542 | ||
543 | #define SYNC_IP() \ | |
544 | vp->ip = (scm_t_uint8 *) (ip) | |
545 | ||
546 | #define SYNC_REGISTER() \ | |
547 | SYNC_IP() | |
548 | #define SYNC_BEFORE_GC() /* Only SP and FP needed to trace GC */ | |
549 | #define SYNC_ALL() /* FP already saved */ \ | |
550 | SYNC_IP() | |
551 | ||
552 | #define CHECK_OVERFLOW(sp) \ | |
553 | do { \ | |
554 | if (SCM_UNLIKELY ((sp) >= stack_limit)) \ | |
555 | vm_error_stack_overflow (vp); \ | |
556 | } while (0) | |
557 | ||
558 | /* Reserve stack space for a frame. Will check that there is sufficient | |
7396d216 AW |
559 | stack space for N locals, including the procedure, in addition to |
560 | 3 words to set up the next frame. Invoke after preparing the new | |
510ca126 AW |
561 | frame and setting the fp and ip. */ |
562 | #define ALLOC_FRAME(n) \ | |
563 | do { \ | |
7396d216 | 564 | SCM *new_sp = vp->sp = fp - 1 + n - 1; \ |
510ca126 AW |
565 | CHECK_OVERFLOW (new_sp + 4); \ |
566 | } while (0) | |
567 | ||
568 | /* Reset the current frame to hold N locals. Used when we know that no | |
569 | stack expansion is needed. */ | |
570 | #define RESET_FRAME(n) \ | |
571 | do { \ | |
7396d216 | 572 | vp->sp = fp - 2 + n; \ |
510ca126 AW |
573 | } while (0) |
574 | ||
575 | /* Compute the number of locals in the frame. This is equal to the | |
7396d216 AW |
576 | number of actual arguments when a function is first called, plus |
577 | one for the function. */ | |
510ca126 | 578 | #define FRAME_LOCALS_COUNT() \ |
7396d216 | 579 | (vp->sp + 1 - (fp - 1)) |
510ca126 AW |
580 | |
581 | /* Restore registers after returning from a frame. */ | |
582 | #define RESTORE_FRAME() \ | |
583 | do { \ | |
584 | } while (0) | |
585 | ||
586 | ||
587 | #define CACHE_REGISTER() \ | |
588 | do { \ | |
589 | ip = (scm_t_uint32 *) vp->ip; \ | |
590 | fp = vp->fp; \ | |
591 | } while (0) | |
592 | ||
593 | #ifdef HAVE_LABELS_AS_VALUES | |
594 | # define BEGIN_DISPATCH_SWITCH /* */ | |
595 | # define END_DISPATCH_SWITCH /* */ | |
596 | # define NEXT(n) \ | |
597 | do \ | |
598 | { \ | |
599 | ip += n; \ | |
600 | NEXT_HOOK (); \ | |
601 | op = *ip; \ | |
602 | goto *jump_table[op & 0xff]; \ | |
603 | } \ | |
604 | while (0) | |
605 | # define VM_DEFINE_OP(opcode, tag, name, meta) \ | |
606 | op_##tag: | |
607 | #else | |
608 | # define BEGIN_DISPATCH_SWITCH \ | |
609 | vm_start: \ | |
610 | NEXT_HOOK (); \ | |
611 | op = *ip; \ | |
612 | switch (op & 0xff) \ | |
613 | { | |
614 | # define END_DISPATCH_SWITCH \ | |
615 | default: \ | |
616 | goto vm_error_bad_instruction; \ | |
617 | } | |
618 | # define NEXT(n) \ | |
619 | do \ | |
620 | { \ | |
621 | ip += n; \ | |
622 | goto vm_start; \ | |
623 | } \ | |
624 | while (0) | |
625 | # define VM_DEFINE_OP(opcode, tag, name, meta) \ | |
626 | op_##tag: \ | |
627 | case opcode: | |
628 | #endif | |
629 | ||
7396d216 AW |
630 | #define LOCAL_REF(i) SCM_FRAME_VARIABLE (fp, (i) - 1) |
631 | #define LOCAL_SET(i,o) SCM_FRAME_VARIABLE (fp, (i) - 1) = o | |
510ca126 AW |
632 | |
633 | #define VARIABLE_REF(v) SCM_VARIABLE_REF (v) | |
634 | #define VARIABLE_SET(v,o) SCM_VARIABLE_SET (v, o) | |
635 | #define VARIABLE_BOUNDP(v) (!scm_is_eq (VARIABLE_REF (v), SCM_UNDEFINED)) | |
510ca126 AW |
636 | |
637 | #define RETURN_ONE_VALUE(ret) \ | |
638 | do { \ | |
639 | SCM val = ret; \ | |
640 | SCM *sp = SCM_FRAME_LOWER_ADDRESS (fp); \ | |
641 | VM_HANDLE_INTERRUPTS; \ | |
642 | ip = SCM_FRAME_RTL_RETURN_ADDRESS (fp); \ | |
643 | vp->sp = sp; \ | |
644 | fp = vp->fp = SCM_FRAME_DYNAMIC_LINK (fp); \ | |
645 | *sp = val; \ | |
646 | POP_CONTINUATION_HOOK (sp, 1); \ | |
647 | NEXT (0); \ | |
648 | } while (0) | |
649 | ||
650 | /* While we could generate the list-unrolling code here, it's fine for | |
651 | now to just tail-call (apply values vals). */ | |
652 | #define RETURN_VALUE_LIST(vals_) \ | |
653 | do { \ | |
654 | SCM vals = vals_; \ | |
655 | VM_HANDLE_INTERRUPTS; \ | |
656 | fp[-1] = rtl_apply; \ | |
657 | fp[0] = rtl_values; \ | |
658 | fp[1] = vals; \ | |
7396d216 | 659 | RESET_FRAME (3); \ |
510ca126 AW |
660 | ip = (scm_t_uint32 *) rtl_apply_code; \ |
661 | goto op_apply; \ | |
662 | } while (0) | |
663 | ||
664 | #define BR_NARGS(rel) \ | |
665 | scm_t_uint16 expected; \ | |
666 | SCM_UNPACK_RTL_24 (op, expected); \ | |
667 | if (FRAME_LOCALS_COUNT() rel expected) \ | |
668 | { \ | |
669 | scm_t_int32 offset = ip[1]; \ | |
670 | offset >>= 8; /* Sign-extending shift. */ \ | |
671 | NEXT (offset); \ | |
672 | } \ | |
673 | NEXT (2) | |
674 | ||
675 | #define BR_UNARY(x, exp) \ | |
676 | scm_t_uint32 test; \ | |
677 | SCM x; \ | |
678 | SCM_UNPACK_RTL_24 (op, test); \ | |
679 | x = LOCAL_REF (test); \ | |
680 | if ((ip[1] & 0x1) ? !(exp) : (exp)) \ | |
681 | { \ | |
682 | scm_t_int32 offset = ip[1]; \ | |
683 | offset >>= 8; /* Sign-extending shift. */ \ | |
684 | if (offset < 0) \ | |
685 | VM_HANDLE_INTERRUPTS; \ | |
686 | NEXT (offset); \ | |
687 | } \ | |
688 | NEXT (2) | |
689 | ||
690 | #define BR_BINARY(x, y, exp) \ | |
691 | scm_t_uint16 a, b; \ | |
692 | SCM x, y; \ | |
693 | SCM_UNPACK_RTL_12_12 (op, a, b); \ | |
694 | x = LOCAL_REF (a); \ | |
695 | y = LOCAL_REF (b); \ | |
696 | if ((ip[1] & 0x1) ? !(exp) : (exp)) \ | |
697 | { \ | |
698 | scm_t_int32 offset = ip[1]; \ | |
699 | offset >>= 8; /* Sign-extending shift. */ \ | |
700 | if (offset < 0) \ | |
701 | VM_HANDLE_INTERRUPTS; \ | |
702 | NEXT (offset); \ | |
703 | } \ | |
704 | NEXT (2) | |
705 | ||
706 | #define BR_ARITHMETIC(crel,srel) \ | |
707 | { \ | |
708 | scm_t_uint16 a, b; \ | |
709 | SCM x, y; \ | |
710 | SCM_UNPACK_RTL_12_12 (op, a, b); \ | |
711 | x = LOCAL_REF (a); \ | |
712 | y = LOCAL_REF (b); \ | |
713 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) \ | |
714 | { \ | |
715 | scm_t_signed_bits x_bits = SCM_UNPACK (x); \ | |
716 | scm_t_signed_bits y_bits = SCM_UNPACK (y); \ | |
717 | if (x_bits crel y_bits) \ | |
718 | { \ | |
719 | scm_t_int32 offset = ip[1]; \ | |
720 | offset >>= 8; /* Sign-extending shift. */ \ | |
721 | if (offset < 0) \ | |
722 | VM_HANDLE_INTERRUPTS; \ | |
723 | NEXT (offset); \ | |
724 | } \ | |
725 | NEXT (2); \ | |
726 | } \ | |
727 | else \ | |
728 | { \ | |
729 | SYNC_IP (); \ | |
730 | if (scm_is_true (srel (x, y))) \ | |
731 | { \ | |
732 | scm_t_int32 offset = ip[1]; \ | |
733 | offset >>= 8; /* Sign-extending shift. */ \ | |
734 | if (offset < 0) \ | |
735 | VM_HANDLE_INTERRUPTS; \ | |
736 | NEXT (offset); \ | |
737 | } \ | |
738 | NEXT (2); \ | |
739 | } \ | |
740 | } | |
741 | ||
742 | #define ARGS1(a1) \ | |
743 | scm_t_uint16 dst, src; \ | |
744 | SCM a1; \ | |
745 | SCM_UNPACK_RTL_12_12 (op, dst, src); \ | |
746 | a1 = LOCAL_REF (src) | |
747 | #define ARGS2(a1, a2) \ | |
748 | scm_t_uint8 dst, src1, src2; \ | |
749 | SCM a1, a2; \ | |
750 | SCM_UNPACK_RTL_8_8_8 (op, dst, src1, src2); \ | |
751 | a1 = LOCAL_REF (src1); \ | |
752 | a2 = LOCAL_REF (src2) | |
753 | #define RETURN(x) \ | |
754 | do { LOCAL_SET (dst, x); NEXT (1); } while (0) | |
755 | ||
756 | /* The maximum/minimum tagged integers. */ | |
757 | #define INUM_MAX (INTPTR_MAX - 1) | |
758 | #define INUM_MIN (INTPTR_MIN + scm_tc2_int) | |
759 | ||
760 | #define BINARY_INTEGER_OP(CFUNC,SFUNC) \ | |
761 | { \ | |
762 | ARGS2 (x, y); \ | |
763 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) \ | |
764 | { \ | |
765 | scm_t_int64 n = SCM_I_INUM (x) CFUNC SCM_I_INUM (y); \ | |
766 | if (SCM_FIXABLE (n)) \ | |
767 | RETURN (SCM_I_MAKINUM (n)); \ | |
768 | } \ | |
769 | SYNC_IP (); \ | |
770 | RETURN (SFUNC (x, y)); \ | |
771 | } | |
772 | ||
773 | #define VM_VALIDATE_PAIR(x, proc) \ | |
774 | VM_ASSERT (scm_is_pair (x), vm_error_not_a_pair (proc, x)) | |
775 | ||
776 | #define VM_VALIDATE_STRUCT(obj, proc) \ | |
777 | VM_ASSERT (SCM_STRUCTP (obj), vm_error_not_a_pair (proc, obj)) | |
778 | ||
779 | #define VM_VALIDATE_BYTEVECTOR(x, proc) \ | |
780 | VM_ASSERT (SCM_BYTEVECTOR_P (x), vm_error_not_a_bytevector (proc, x)) | |
781 | ||
782 | /* Return true (non-zero) if PTR has suitable alignment for TYPE. */ | |
783 | #define ALIGNED_P(ptr, type) \ | |
784 | ((scm_t_uintptr) (ptr) % alignof_type (type) == 0) | |
785 | ||
786 | static SCM | |
787 | RTL_VM_NAME (SCM vm, SCM program, SCM *argv, size_t nargs_) | |
788 | { | |
789 | /* Instruction pointer: A pointer to the opcode that is currently | |
790 | running. */ | |
791 | register scm_t_uint32 *ip IP_REG; | |
792 | ||
793 | /* Frame pointer: A pointer into the stack, off of which we index | |
794 | arguments and local variables. Pushed at function calls, popped on | |
795 | returns. */ | |
796 | register SCM *fp FP_REG; | |
797 | ||
798 | /* Current opcode: A cache of *ip. */ | |
799 | register scm_t_uint32 op; | |
800 | ||
801 | /* Cached variables. */ | |
802 | struct scm_vm *vp = SCM_VM_DATA (vm); | |
803 | SCM *stack_limit = vp->stack_limit; /* stack limit address */ | |
804 | scm_i_thread *current_thread = SCM_I_CURRENT_THREAD; | |
805 | scm_i_jmp_buf registers; /* used for prompts */ | |
806 | ||
807 | #ifdef HAVE_LABELS_AS_VALUES | |
808 | static const void **jump_table_pointer = NULL; | |
809 | register const void **jump_table JT_REG; | |
810 | ||
811 | if (SCM_UNLIKELY (!jump_table_pointer)) | |
812 | { | |
813 | int i; | |
814 | jump_table_pointer = malloc (SCM_VM_NUM_INSTRUCTIONS * sizeof (void*)); | |
815 | for (i = 0; i < SCM_VM_NUM_INSTRUCTIONS; i++) | |
816 | jump_table_pointer[i] = &&vm_error_bad_instruction; | |
817 | #define INIT(opcode, tag, name, meta) jump_table_pointer[opcode] = &&op_##tag; | |
818 | FOR_EACH_VM_OPERATION(INIT); | |
819 | #undef INIT | |
820 | } | |
821 | ||
822 | /* Attempt to keep JUMP_TABLE_POINTER in a register. This saves one | |
823 | load instruction at each instruction dispatch. */ | |
824 | jump_table = jump_table_pointer; | |
825 | #endif | |
826 | ||
827 | if (SCM_I_SETJMP (registers)) | |
828 | { | |
829 | /* Non-local return. The values are on the stack, on a new frame | |
830 | set up to call `values' to return the values to the handler. | |
831 | Cache the VM registers back from the vp, and dispatch to the | |
832 | body of `values'. | |
833 | ||
834 | Note, at this point, we must assume that any variable local to | |
835 | vm_engine that can be assigned *has* been assigned. So we need | |
836 | to pull all our state back from the ip/fp/sp. | |
837 | */ | |
838 | CACHE_REGISTER (); | |
839 | ABORT_CONTINUATION_HOOK (fp, FRAME_LOCALS_COUNT()); | |
840 | NEXT (0); | |
841 | } | |
842 | ||
843 | /* Load previous VM registers. */ | |
844 | CACHE_REGISTER (); | |
845 | ||
846 | VM_HANDLE_INTERRUPTS; | |
847 | ||
848 | /* Initialization */ | |
849 | { | |
850 | SCM *base; | |
851 | ||
852 | /* Check that we have enough space: 4 words for the boot | |
853 | continuation, 4 + nargs for the procedure application, and 4 for | |
854 | setting up a new frame. */ | |
855 | base = vp->sp + 1; | |
856 | CHECK_OVERFLOW (vp->sp + 4 + 4 + nargs_ + 4); | |
857 | ||
858 | /* Since it's possible to receive the arguments on the stack itself, | |
859 | and indeed the regular VM invokes us that way, shuffle up the | |
860 | arguments first. */ | |
861 | { | |
862 | int i; | |
863 | for (i = nargs_ - 1; i >= 0; i--) | |
864 | base[8 + i] = argv[i]; | |
865 | } | |
866 | ||
867 | /* Initial frame, saving previous fp and ip, with the boot | |
868 | continuation. */ | |
869 | base[0] = SCM_PACK (fp); /* dynamic link */ | |
870 | base[1] = SCM_PACK (0); /* the boot continuation does not return to scheme */ | |
871 | base[2] = SCM_PACK (ip); /* ra */ | |
872 | base[3] = rtl_boot_continuation; | |
873 | fp = &base[4]; | |
874 | ip = rtl_boot_single_value_continuation_code; | |
875 | if (ip - 1 != rtl_boot_multiple_value_continuation_code) | |
876 | abort(); | |
877 | ||
878 | /* MV-call frame, function & arguments */ | |
879 | base[4] = SCM_PACK (fp); /* dynamic link */ | |
880 | base[5] = SCM_PACK (ip - 1); /* in RTL programs, MVRA precedes RA by one */ | |
881 | base[6] = SCM_PACK (ip); /* ra */ | |
882 | base[7] = program; | |
883 | fp = vp->fp = &base[8]; | |
7396d216 | 884 | RESET_FRAME (nargs_ + 1); |
510ca126 AW |
885 | } |
886 | ||
887 | apply: | |
888 | while (!SCM_RTL_PROGRAM_P (SCM_FRAME_PROGRAM (fp))) | |
889 | { | |
890 | #if 0 | |
891 | SCM proc = SCM_FRAME_PROGRAM (fp); | |
892 | ||
893 | if (SCM_STRUCTP (proc) && SCM_STRUCT_APPLICABLE_P (proc)) | |
894 | { | |
895 | fp[-1] = SCM_STRUCT_PROCEDURE (proc); | |
896 | continue; | |
897 | } | |
898 | if (SCM_HAS_TYP7 (proc, scm_tc7_smob) && SCM_SMOB_APPLICABLE_P (proc)) | |
899 | { | |
900 | scm_t_uint32 n = FRAME_LOCALS_COUNT(); | |
901 | ||
902 | /* Shuffle args up, place smob in local 0. */ | |
903 | CHECK_OVERFLOW (vp->sp + 1); | |
904 | vp->sp++; | |
905 | while (n--) | |
906 | LOCAL_SET (n + 1, LOCAL_REF (n)); | |
510ca126 AW |
907 | |
908 | fp[-1] = SCM_SMOB_DESCRIPTOR (proc).apply_trampoline; | |
909 | continue; | |
910 | } | |
911 | ||
912 | SYNC_IP(); | |
913 | vm_error_wrong_type_apply (proc); | |
914 | #else | |
915 | SCM ret; | |
916 | SYNC_ALL (); | |
917 | ||
7396d216 | 918 | ret = VM_NAME (vm, fp[-1], fp, FRAME_LOCALS_COUNT () - 1); |
510ca126 AW |
919 | |
920 | if (SCM_UNLIKELY (SCM_VALUESP (ret))) | |
921 | RETURN_VALUE_LIST (scm_struct_ref (ret, SCM_INUM0)); | |
922 | else | |
923 | RETURN_ONE_VALUE (ret); | |
924 | #endif | |
925 | } | |
926 | ||
927 | /* Let's go! */ | |
928 | ip = SCM_RTL_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); | |
929 | NEXT (0); | |
930 | ||
931 | BEGIN_DISPATCH_SWITCH; | |
932 | ||
933 | ||
934 | \f | |
935 | ||
936 | /* | |
937 | * Call and return | |
938 | */ | |
939 | ||
940 | /* halt _:24 | |
941 | * | |
7396d216 | 942 | * Bring the VM to a halt, returning the single value from slot 1. |
510ca126 AW |
943 | */ |
944 | VM_DEFINE_OP (0, halt, "halt", OP1 (U8_X24)) | |
945 | { | |
7396d216 | 946 | SCM ret = LOCAL_REF (1); |
510ca126 AW |
947 | |
948 | vp->ip = SCM_FRAME_RETURN_ADDRESS (fp); | |
949 | vp->sp = SCM_FRAME_LOWER_ADDRESS (fp) - 1; | |
950 | vp->fp = SCM_FRAME_DYNAMIC_LINK (fp); | |
951 | ||
952 | return ret; | |
953 | } | |
954 | ||
955 | /* halt/values _:24 | |
956 | * | |
7396d216 | 957 | * Bring the VM to a halt, returning all the values from the MV stack. |
510ca126 AW |
958 | */ |
959 | VM_DEFINE_OP (1, halt_values, "halt/values", OP1 (U8_X24)) | |
960 | { | |
961 | scm_t_ptrdiff n; | |
510ca126 AW |
962 | SCM ret = SCM_EOL; |
963 | ||
964 | SYNC_BEFORE_GC(); | |
965 | ||
7396d216 AW |
966 | /* Boot closure in r0, empty stack from r1 to r4, values from r5. */ |
967 | for (n = FRAME_LOCALS_COUNT () - 1; n >= 5; n--) | |
968 | ret = scm_cons (LOCAL_REF (n), ret); | |
510ca126 AW |
969 | |
970 | vp->ip = SCM_FRAME_RETURN_ADDRESS (fp); | |
971 | vp->sp = SCM_FRAME_LOWER_ADDRESS (fp) - 1; | |
972 | vp->fp = SCM_FRAME_DYNAMIC_LINK (fp); | |
973 | ||
974 | return scm_values (ret); | |
975 | } | |
976 | ||
286a0fb3 | 977 | /* push-frame from:24 _:8 nargs:24 |
510ca126 | 978 | * |
286a0fb3 AW |
979 | * Push a frame for a new procedure call starting at FROM. |
980 | * Reserve stack space for NARGS values in the new frame, including | |
981 | * the procedure. | |
982 | */ | |
983 | VM_DEFINE_OP (2, push_frame, "push-frame", OP2 (U8_U24, X8_U24)) | |
984 | { | |
985 | scm_t_uint32 from, nargs, new_size, n; | |
986 | ||
987 | SCM_UNPACK_RTL_24 (op, from); | |
988 | SCM_UNPACK_RTL_24 (ip[1], nargs); | |
989 | ||
990 | new_size = from + 3 + nargs; | |
991 | ALLOC_FRAME (new_size); | |
992 | ||
993 | /* FIXME: Elide this initialization? */ | |
994 | for (n = from; n < new_size; n++) | |
995 | LOCAL_SET (n, SCM_UNDEFINED); | |
996 | ||
997 | NEXT (2); | |
998 | } | |
999 | ||
1000 | /* call from:24 | |
1001 | * | |
1002 | * Call a procedure. Links a call frame at FROM, saving the return | |
1003 | * address and the fp. | |
510ca126 AW |
1004 | * |
1005 | * The MVRA of the new frame is set to point to the next instruction | |
1006 | * after the end of the `call' instruction. The word following that | |
1007 | * is the RA. | |
1008 | */ | |
286a0fb3 | 1009 | VM_DEFINE_OP (3, call, "call", OP1 (U8_U24)) |
510ca126 | 1010 | { |
286a0fb3 | 1011 | scm_t_uint32 from; |
510ca126 AW |
1012 | SCM *old_fp = fp; |
1013 | ||
1014 | SCM_UNPACK_RTL_24 (op, from); | |
510ca126 AW |
1015 | |
1016 | VM_HANDLE_INTERRUPTS; | |
1017 | ||
7396d216 | 1018 | fp = vp->fp = old_fp + from + 3; |
510ca126 | 1019 | SCM_FRAME_SET_DYNAMIC_LINK (fp, old_fp); |
286a0fb3 AW |
1020 | SCM_FRAME_SET_RTL_MV_RETURN_ADDRESS (fp, ip + 1); |
1021 | SCM_FRAME_SET_RTL_RETURN_ADDRESS (fp, ip + 2); | |
510ca126 AW |
1022 | |
1023 | PUSH_CONTINUATION_HOOK (); | |
1024 | APPLY_HOOK (); | |
1025 | ||
1026 | if (SCM_UNLIKELY (!SCM_RTL_PROGRAM_P (SCM_FRAME_PROGRAM (fp)))) | |
1027 | goto apply; | |
1028 | ||
1029 | ip = SCM_RTL_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); | |
1030 | NEXT (0); | |
1031 | } | |
1032 | ||
1033 | /* call/values from:24 _:8 proc:24 | |
1034 | * | |
1035 | * Call a procedure, with the values already pushed above a call frame | |
1036 | * at FROM. This instruction is used to handle MV returns in the case | |
1037 | * that we can't inline the handler. | |
1038 | * | |
1039 | * As with `call', the next instruction after the call/values will be | |
1040 | * the MVRA, and the word after that instruction is the RA. | |
1041 | */ | |
286a0fb3 | 1042 | VM_DEFINE_OP (4, call_values, "call/values", OP2 (U8_U24, X8_U24)) |
510ca126 AW |
1043 | { |
1044 | scm_t_uint32 from, proc; | |
1045 | SCM *old_fp = fp; | |
1046 | ||
1047 | SCM_UNPACK_RTL_24 (op, from); | |
1048 | SCM_UNPACK_RTL_24 (ip[1], proc); | |
1049 | ||
1050 | VM_HANDLE_INTERRUPTS; | |
1051 | ||
1052 | fp = vp->fp = old_fp + from + 4; | |
1053 | SCM_FRAME_SET_DYNAMIC_LINK (fp, old_fp); | |
1054 | SCM_FRAME_SET_RTL_MV_RETURN_ADDRESS (fp, ip + 2); | |
1055 | SCM_FRAME_SET_RTL_RETURN_ADDRESS (fp, ip + 3); | |
7396d216 | 1056 | fp[-1] = old_fp[proc - 1]; |
510ca126 AW |
1057 | |
1058 | PUSH_CONTINUATION_HOOK (); | |
1059 | APPLY_HOOK (); | |
1060 | ||
1061 | if (SCM_UNLIKELY (!SCM_RTL_PROGRAM_P (SCM_FRAME_PROGRAM (fp)))) | |
1062 | goto apply; | |
1063 | ||
1064 | ip = SCM_RTL_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); | |
1065 | NEXT (0); | |
1066 | } | |
1067 | ||
1068 | /* tail-call nargs:24 _:8 proc:24 | |
1069 | * | |
1070 | * Tail-call a procedure. Requires that all of the arguments have | |
1071 | * already been shuffled into position. | |
1072 | */ | |
286a0fb3 | 1073 | VM_DEFINE_OP (5, tail_call, "tail-call", OP2 (U8_U24, X8_U24)) |
510ca126 AW |
1074 | { |
1075 | scm_t_uint32 nargs, proc; | |
1076 | ||
1077 | SCM_UNPACK_RTL_24 (op, nargs); | |
1078 | SCM_UNPACK_RTL_24 (ip[1], proc); | |
1079 | ||
1080 | VM_HANDLE_INTERRUPTS; | |
1081 | ||
1082 | fp[-1] = LOCAL_REF (proc); | |
1083 | /* No need to check for overflow, as the compiler has already | |
1084 | ensured that this frame has enough space. */ | |
7396d216 | 1085 | RESET_FRAME (nargs + 1); |
510ca126 AW |
1086 | |
1087 | APPLY_HOOK (); | |
1088 | ||
1089 | if (SCM_UNLIKELY (!SCM_RTL_PROGRAM_P (SCM_FRAME_PROGRAM (fp)))) | |
1090 | goto apply; | |
1091 | ||
1092 | ip = SCM_RTL_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); | |
1093 | NEXT (0); | |
1094 | } | |
1095 | ||
1096 | /* return src:24 | |
1097 | * | |
1098 | * Return a value. | |
1099 | */ | |
286a0fb3 | 1100 | VM_DEFINE_OP (6, return, "return", OP1 (U8_U24)) |
510ca126 AW |
1101 | { |
1102 | scm_t_uint32 src; | |
1103 | SCM_UNPACK_RTL_24 (op, src); | |
1104 | RETURN_ONE_VALUE (LOCAL_REF (src)); | |
1105 | } | |
1106 | ||
1107 | /* return-values nvalues:24 | |
1108 | * | |
1109 | * Return a number of values from a call frame. This opcode | |
1110 | * corresponds to an application of `values' in tail position. As | |
1111 | * with tail calls, we expect that the NVALUES values have already | |
1112 | * been shuffled down to a contiguous array starting at slot 0. | |
1113 | */ | |
286a0fb3 | 1114 | VM_DEFINE_OP (7, return_values, "return/values", OP1 (U8_U24)) |
510ca126 AW |
1115 | { |
1116 | scm_t_uint32 nargs; | |
1117 | SCM_UNPACK_RTL_24 (op, nargs); | |
7396d216 | 1118 | RESET_FRAME (nargs + 1); |
510ca126 AW |
1119 | fp[-1] = rtl_values; |
1120 | goto op_values; | |
1121 | } | |
1122 | ||
1123 | ||
1124 | \f | |
1125 | ||
1126 | /* | |
1127 | * Specialized call stubs | |
1128 | */ | |
1129 | ||
1130 | /* subr-call ptr-idx:24 | |
1131 | * | |
1132 | * Call a subr, passing all locals in this frame as arguments. Fetch | |
1133 | * the foreign pointer from PTR-IDX, a free variable. Return from the | |
1134 | * calling frame. This instruction is part of the trampolines | |
1135 | * created in gsubr.c, and is not generated by the compiler. | |
1136 | */ | |
286a0fb3 | 1137 | VM_DEFINE_OP (8, subr_call, "subr-call", OP1 (U8_U24)) |
510ca126 AW |
1138 | { |
1139 | scm_t_uint32 ptr_idx; | |
1140 | SCM pointer, ret; | |
1141 | SCM (*subr)(); | |
1142 | ||
1143 | SCM_UNPACK_RTL_24 (op, ptr_idx); | |
1144 | ||
7396d216 | 1145 | pointer = SCM_RTL_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (0), ptr_idx); |
510ca126 AW |
1146 | subr = SCM_POINTER_VALUE (pointer); |
1147 | ||
1148 | VM_HANDLE_INTERRUPTS; | |
1149 | SYNC_IP (); | |
1150 | ||
1151 | switch (FRAME_LOCALS_COUNT ()) | |
1152 | { | |
1153 | case 0: | |
1154 | ret = subr (); | |
1155 | break; | |
1156 | case 1: | |
1157 | ret = subr (fp[0]); | |
1158 | break; | |
1159 | case 2: | |
1160 | ret = subr (fp[0], fp[1]); | |
1161 | break; | |
1162 | case 3: | |
1163 | ret = subr (fp[0], fp[1], fp[2]); | |
1164 | break; | |
1165 | case 4: | |
1166 | ret = subr (fp[0], fp[1], fp[2], fp[3]); | |
1167 | break; | |
1168 | case 5: | |
1169 | ret = subr (fp[0], fp[1], fp[2], fp[3], fp[4]); | |
1170 | break; | |
1171 | case 6: | |
1172 | ret = subr (fp[0], fp[1], fp[2], fp[3], fp[4], fp[5]); | |
1173 | break; | |
1174 | case 7: | |
1175 | ret = subr (fp[0], fp[1], fp[2], fp[3], fp[4], fp[5], fp[6]); | |
1176 | break; | |
1177 | case 8: | |
1178 | ret = subr (fp[0], fp[1], fp[2], fp[3], fp[4], fp[5], fp[6], fp[7]); | |
1179 | break; | |
1180 | case 9: | |
1181 | ret = subr (fp[0], fp[1], fp[2], fp[3], fp[4], fp[5], fp[6], fp[7], fp[8]); | |
1182 | break; | |
1183 | case 10: | |
1184 | ret = subr (fp[0], fp[1], fp[2], fp[3], fp[4], fp[5], fp[6], fp[7], fp[8], fp[9]); | |
1185 | break; | |
1186 | default: | |
1187 | abort (); | |
1188 | } | |
1189 | ||
1190 | // NULLSTACK_FOR_NONLOCAL_EXIT (); | |
1191 | ||
1192 | if (SCM_UNLIKELY (SCM_VALUESP (ret))) | |
1193 | /* multiple values returned to continuation */ | |
1194 | RETURN_VALUE_LIST (scm_struct_ref (ret, SCM_INUM0)); | |
1195 | else | |
1196 | RETURN_ONE_VALUE (ret); | |
1197 | } | |
1198 | ||
1199 | /* foreign-call cif-idx:12 ptr-idx:12 | |
1200 | * | |
1201 | * Call a foreign function. Fetch the CIF and foreign pointer from | |
1202 | * CIF-IDX and PTR-IDX, both free variables. Return from the calling | |
1203 | * frame. Arguments are taken from the stack. This instruction is | |
1204 | * part of the trampolines created by the FFI, and is not generated by | |
1205 | * the compiler. | |
1206 | */ | |
286a0fb3 | 1207 | VM_DEFINE_OP (9, foreign_call, "foreign-call", OP1 (U8_U12_U12)) |
510ca126 AW |
1208 | { |
1209 | scm_t_uint16 cif_idx, ptr_idx; | |
7396d216 | 1210 | SCM closure, cif, pointer, ret; |
510ca126 AW |
1211 | |
1212 | SCM_UNPACK_RTL_12_12 (op, cif_idx, ptr_idx); | |
1213 | ||
7396d216 AW |
1214 | closure = LOCAL_REF (0); |
1215 | cif = SCM_RTL_PROGRAM_FREE_VARIABLE_REF (closure, cif_idx); | |
1216 | pointer = SCM_RTL_PROGRAM_FREE_VARIABLE_REF (closure, ptr_idx); | |
510ca126 AW |
1217 | |
1218 | SYNC_IP (); | |
1219 | VM_HANDLE_INTERRUPTS; | |
1220 | ||
1221 | // FIXME: separate args | |
1222 | ret = scm_i_foreign_call (scm_cons (cif, pointer), fp); | |
1223 | ||
1224 | // NULLSTACK_FOR_NONLOCAL_EXIT (); | |
1225 | ||
1226 | if (SCM_UNLIKELY (SCM_VALUESP (ret))) | |
1227 | /* multiple values returned to continuation */ | |
1228 | RETURN_VALUE_LIST (scm_struct_ref (ret, SCM_INUM0)); | |
1229 | else | |
1230 | RETURN_ONE_VALUE (ret); | |
1231 | } | |
1232 | ||
1233 | /* continuation-call contregs:24 | |
1234 | * | |
1235 | * Return to a continuation, nonlocally. The arguments to the | |
1236 | * continuation are taken from the stack. CONTREGS is a free variable | |
1237 | * containing the reified continuation. This instruction is part of | |
1238 | * the implementation of undelimited continuations, and is not | |
1239 | * generated by the compiler. | |
1240 | */ | |
286a0fb3 | 1241 | VM_DEFINE_OP (10, continuation_call, "continuation-call", OP1 (U8_U24)) |
510ca126 AW |
1242 | { |
1243 | SCM contregs; | |
1244 | scm_t_uint32 contregs_idx; | |
1245 | ||
1246 | SCM_UNPACK_RTL_24 (op, contregs_idx); | |
1247 | ||
7396d216 AW |
1248 | contregs = |
1249 | SCM_RTL_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (0), contregs_idx); | |
510ca126 AW |
1250 | |
1251 | SYNC_IP (); | |
1252 | scm_i_check_continuation (contregs); | |
1253 | vm_return_to_continuation (scm_i_contregs_vm (contregs), | |
1254 | scm_i_contregs_vm_cont (contregs), | |
1255 | FRAME_LOCALS_COUNT (), fp); | |
1256 | scm_i_reinstate_continuation (contregs); | |
1257 | ||
1258 | /* no NEXT */ | |
1259 | abort (); | |
1260 | } | |
1261 | ||
1262 | /* compose-continuation cont:24 | |
1263 | * | |
1264 | * Compose a partial continution with the current continuation. The | |
1265 | * arguments to the continuation are taken from the stack. CONT is a | |
1266 | * free variable containing the reified continuation. This | |
1267 | * instruction is part of the implementation of partial continuations, | |
1268 | * and is not generated by the compiler. | |
1269 | */ | |
286a0fb3 | 1270 | VM_DEFINE_OP (11, compose_continuation, "compose-continuation", OP1 (U8_U24)) |
510ca126 AW |
1271 | { |
1272 | SCM vmcont; | |
1273 | scm_t_uint32 cont_idx; | |
1274 | ||
1275 | SCM_UNPACK_RTL_24 (op, cont_idx); | |
1276 | vmcont = LOCAL_REF (cont_idx); | |
1277 | ||
1278 | SYNC_IP (); | |
1279 | VM_ASSERT (SCM_VM_CONT_REWINDABLE_P (vmcont), | |
1280 | vm_error_continuation_not_rewindable (vmcont)); | |
1281 | vm_reinstate_partial_continuation (vm, vmcont, FRAME_LOCALS_COUNT (), fp, | |
1282 | ¤t_thread->dynstack, | |
1283 | ®isters); | |
1284 | CACHE_REGISTER (); | |
1285 | NEXT (0); | |
1286 | } | |
1287 | ||
1288 | /* apply _:24 | |
1289 | * | |
1290 | * Tail-apply the procedure in local slot 0 to the rest of the | |
1291 | * arguments. This instruction is part of the implementation of | |
1292 | * `apply', and is not generated by the compiler. | |
1293 | */ | |
286a0fb3 | 1294 | VM_DEFINE_OP (12, apply, "apply", OP1 (U8_X24)) |
510ca126 AW |
1295 | { |
1296 | int i, list_idx, list_len, nargs; | |
1297 | SCM list; | |
1298 | ||
1299 | VM_HANDLE_INTERRUPTS; | |
1300 | ||
1301 | VM_ASSERT (FRAME_LOCALS_COUNT () >= 2, abort ()); | |
1302 | nargs = FRAME_LOCALS_COUNT (); | |
1303 | list_idx = nargs - 1; | |
1304 | list = LOCAL_REF (list_idx); | |
1305 | list_len = scm_ilength (list); | |
1306 | ||
1307 | VM_ASSERT (list_len >= 0, vm_error_apply_to_non_list (list)); | |
1308 | ||
1309 | nargs = nargs - 2 + list_len; | |
1310 | ALLOC_FRAME (nargs); | |
1311 | ||
1312 | for (i = 0; i < list_idx; i++) | |
7396d216 | 1313 | LOCAL_SET(i - 1, LOCAL_REF (i)); |
510ca126 AW |
1314 | |
1315 | /* Null out these slots, just in case there are less than 2 elements | |
1316 | in the list. */ | |
7396d216 AW |
1317 | LOCAL_SET (list_idx - 1, SCM_UNDEFINED); |
1318 | LOCAL_SET (list_idx, SCM_UNDEFINED); | |
510ca126 AW |
1319 | |
1320 | for (i = 0; i < list_len; i++, list = SCM_CDR (list)) | |
7396d216 | 1321 | LOCAL_SET (list_idx - 1 + i, SCM_CAR (list)); |
510ca126 AW |
1322 | |
1323 | APPLY_HOOK (); | |
1324 | ||
1325 | if (SCM_UNLIKELY (!SCM_RTL_PROGRAM_P (SCM_FRAME_PROGRAM (fp)))) | |
1326 | goto apply; | |
1327 | ||
1328 | ip = SCM_RTL_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); | |
1329 | NEXT (0); | |
1330 | } | |
1331 | ||
1332 | /* call/cc _:24 | |
1333 | * | |
1334 | * Capture the current continuation, and tail-apply the procedure in | |
1335 | * local slot 0 to it. This instruction is part of the implementation | |
1336 | * of `call/cc', and is not generated by the compiler. | |
1337 | */ | |
286a0fb3 | 1338 | VM_DEFINE_OP (13, call_cc, "call/cc", OP1 (U8_X24)) |
510ca126 AW |
1339 | #if 0 |
1340 | { | |
1341 | SCM vm_cont, cont; | |
1342 | scm_t_dynstack *dynstack; | |
1343 | ||
1344 | VM_HANDLE_INTERRUPTS; | |
1345 | ||
1346 | SYNC_IP (); | |
1347 | dynstack = scm_dynstack_capture_all (¤t_thread->dynstack); | |
1348 | vm_cont = scm_i_vm_capture_stack (vp->stack_base, | |
1349 | SCM_FRAME_DYNAMIC_LINK (fp), | |
1350 | SCM_FRAME_LOWER_ADDRESS (fp) - 1, | |
1351 | SCM_FRAME_RETURN_ADDRESS (fp), | |
1352 | SCM_FRAME_MV_RETURN_ADDRESS (fp), | |
1353 | dynstack, | |
1354 | 0); | |
1355 | cont = scm_i_make_continuation (®isters, vm, vm_cont); | |
1356 | ||
1357 | fp[-1] = fp[0]; | |
1358 | fp[0] = cont; | |
7396d216 | 1359 | RESET_FRAME (2); |
510ca126 AW |
1360 | |
1361 | APPLY_HOOK (); | |
1362 | ||
1363 | if (SCM_UNLIKELY (!SCM_RTL_PROGRAM_P (SCM_FRAME_PROGRAM (fp)))) | |
1364 | goto apply; | |
1365 | ||
1366 | ip = SCM_RTL_PROGRAM_CODE (SCM_FRAME_PROGRAM (fp)); | |
1367 | NEXT (0); | |
1368 | } | |
1369 | #else | |
1370 | abort(); | |
1371 | #endif | |
1372 | ||
1373 | /* values _:24 | |
1374 | * | |
1375 | * Return all values on the stack to the current continuation. | |
1376 | * This instruction is part of the implementation of | |
1377 | * `values', and is not generated by the compiler. | |
1378 | */ | |
286a0fb3 | 1379 | VM_DEFINE_OP (14, values, "values", OP1 (U8_X24)) |
510ca126 AW |
1380 | { |
1381 | SCM *base = fp; | |
1382 | #if VM_USE_HOOKS | |
7396d216 | 1383 | int nargs = FRAME_LOCALS_COUNT () - 1; |
510ca126 AW |
1384 | #endif |
1385 | ||
1386 | /* We don't do much; it's the caller that's responsible for | |
1387 | shuffling values and resetting the stack. */ | |
1388 | ||
1389 | VM_HANDLE_INTERRUPTS; | |
1390 | ip = SCM_FRAME_RTL_MV_RETURN_ADDRESS (fp); | |
1391 | fp = vp->fp = SCM_FRAME_DYNAMIC_LINK (fp); | |
1392 | ||
1393 | /* Clear stack frame. */ | |
1394 | base[-1] = SCM_BOOL_F; | |
1395 | base[-2] = SCM_BOOL_F; | |
1396 | base[-3] = SCM_BOOL_F; | |
1397 | base[-4] = SCM_BOOL_F; | |
1398 | ||
1399 | POP_CONTINUATION_HOOK (base, nargs); | |
1400 | ||
1401 | NEXT (0); | |
1402 | } | |
1403 | ||
1404 | ||
1405 | \f | |
1406 | ||
1407 | /* | |
1408 | * Function prologues | |
1409 | */ | |
1410 | ||
1411 | /* br-if-nargs-ne expected:24 _:8 offset:24 | |
1412 | * br-if-nargs-lt expected:24 _:8 offset:24 | |
1413 | * br-if-nargs-gt expected:24 _:8 offset:24 | |
1414 | * | |
1415 | * If the number of actual arguments is not equal, less than, or greater | |
1416 | * than EXPECTED, respectively, add OFFSET, a signed 24-bit number, to | |
1417 | * the current instruction pointer. | |
1418 | */ | |
286a0fb3 | 1419 | VM_DEFINE_OP (15, br_if_nargs_ne, "br-if-nargs-ne", OP2 (U8_U24, X8_L24)) |
510ca126 AW |
1420 | { |
1421 | BR_NARGS (!=); | |
1422 | } | |
286a0fb3 | 1423 | VM_DEFINE_OP (16, br_if_nargs_lt, "br-if-nargs-lt", OP2 (U8_U24, X8_L24)) |
510ca126 AW |
1424 | { |
1425 | BR_NARGS (<); | |
1426 | } | |
286a0fb3 | 1427 | VM_DEFINE_OP (17, br_if_nargs_gt, "br-if-nargs-gt", OP2 (U8_U24, X8_L24)) |
510ca126 AW |
1428 | { |
1429 | BR_NARGS (>); | |
1430 | } | |
1431 | ||
1432 | /* assert-nargs-ee expected:24 | |
1433 | * assert-nargs-ge expected:24 | |
1434 | * assert-nargs-le expected:24 | |
1435 | * | |
1436 | * If the number of actual arguments is not ==, >=, or <= EXPECTED, | |
1437 | * respectively, signal an error. | |
1438 | */ | |
286a0fb3 | 1439 | VM_DEFINE_OP (18, assert_nargs_ee, "assert-nargs-ee", OP1 (U8_U24)) |
510ca126 AW |
1440 | { |
1441 | scm_t_uint32 expected; | |
1442 | SCM_UNPACK_RTL_24 (op, expected); | |
1443 | VM_ASSERT (FRAME_LOCALS_COUNT () == expected, | |
1444 | vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp))); | |
1445 | NEXT (1); | |
1446 | } | |
286a0fb3 | 1447 | VM_DEFINE_OP (19, assert_nargs_ge, "assert-nargs-ge", OP1 (U8_U24)) |
510ca126 AW |
1448 | { |
1449 | scm_t_uint32 expected; | |
1450 | SCM_UNPACK_RTL_24 (op, expected); | |
1451 | VM_ASSERT (FRAME_LOCALS_COUNT () >= expected, | |
1452 | vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp))); | |
1453 | NEXT (1); | |
1454 | } | |
286a0fb3 | 1455 | VM_DEFINE_OP (20, assert_nargs_le, "assert-nargs-le", OP1 (U8_U24)) |
510ca126 AW |
1456 | { |
1457 | scm_t_uint32 expected; | |
1458 | SCM_UNPACK_RTL_24 (op, expected); | |
1459 | VM_ASSERT (FRAME_LOCALS_COUNT () <= expected, | |
1460 | vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp))); | |
1461 | NEXT (1); | |
1462 | } | |
1463 | ||
1464 | /* reserve-locals nlocals:24 | |
1465 | * | |
1466 | * Ensure that there is space on the stack for NLOCALS local variables, | |
1467 | * setting them all to SCM_UNDEFINED, except those nargs values that | |
7396d216 | 1468 | * were passed as arguments and procedure. |
510ca126 | 1469 | */ |
286a0fb3 | 1470 | VM_DEFINE_OP (21, reserve_locals, "reserve-locals", OP1 (U8_U24)) |
510ca126 AW |
1471 | { |
1472 | scm_t_uint32 nlocals, nargs; | |
1473 | SCM_UNPACK_RTL_24 (op, nlocals); | |
1474 | ||
1475 | nargs = FRAME_LOCALS_COUNT (); | |
1476 | ALLOC_FRAME (nlocals); | |
1477 | while (nlocals-- > nargs) | |
1478 | LOCAL_SET (nlocals, SCM_UNDEFINED); | |
1479 | ||
1480 | NEXT (1); | |
1481 | } | |
1482 | ||
1483 | /* assert-nargs-ee/locals expected:12 nlocals:12 | |
1484 | * | |
1485 | * Equivalent to a sequence of assert-nargs-ee and reserve-locals. The | |
1486 | * number of locals reserved is EXPECTED + NLOCALS. | |
1487 | */ | |
286a0fb3 | 1488 | VM_DEFINE_OP (22, assert_nargs_ee_locals, "assert-nargs-ee/locals", OP1 (U8_U12_U12)) |
510ca126 AW |
1489 | { |
1490 | scm_t_uint16 expected, nlocals; | |
1491 | SCM_UNPACK_RTL_12_12 (op, expected, nlocals); | |
1492 | VM_ASSERT (FRAME_LOCALS_COUNT () == expected, | |
1493 | vm_error_wrong_num_args (SCM_FRAME_PROGRAM (fp))); | |
1494 | ALLOC_FRAME (expected + nlocals); | |
1495 | while (nlocals--) | |
1496 | LOCAL_SET (expected + nlocals, SCM_UNDEFINED); | |
1497 | ||
1498 | NEXT (1); | |
1499 | } | |
1500 | ||
1501 | /* bind-kwargs nreq:24 allow-other-keys:1 has-rest:1 _:6 nreq-and-opt:24 | |
1502 | * _:8 ntotal:24 kw-offset:32 | |
1503 | * | |
1504 | * Find the last positional argument, and shuffle all the rest above | |
1505 | * NTOTAL. Initialize the intervening locals to SCM_UNDEFINED. Then | |
1506 | * load the constant at KW-OFFSET words from the current IP, and use it | |
1507 | * to bind keyword arguments. If HAS-REST, collect all shuffled | |
1508 | * arguments into a list, and store it in NREQ-AND-OPT. Finally, clear | |
1509 | * the arguments that we shuffled up. | |
1510 | * | |
1511 | * A macro-mega-instruction. | |
1512 | */ | |
286a0fb3 | 1513 | VM_DEFINE_OP (23, bind_kwargs, "bind-kwargs", OP4 (U8_U24, U8_U24, X8_U24, N32)) |
510ca126 AW |
1514 | { |
1515 | scm_t_uint32 nreq, nreq_and_opt, ntotal, npositional, nkw, n, nargs; | |
1516 | scm_t_int32 kw_offset; | |
1517 | scm_t_bits kw_bits; | |
1518 | SCM kw; | |
1519 | char allow_other_keys, has_rest; | |
1520 | ||
1521 | SCM_UNPACK_RTL_24 (op, nreq); | |
1522 | allow_other_keys = ip[1] & 0x1; | |
1523 | has_rest = ip[1] & 0x2; | |
1524 | SCM_UNPACK_RTL_24 (ip[1], nreq_and_opt); | |
1525 | SCM_UNPACK_RTL_24 (ip[2], ntotal); | |
1526 | kw_offset = ip[3]; | |
1527 | kw_bits = (scm_t_bits) (ip + kw_offset); | |
1528 | VM_ASSERT (!(kw_bits & 0x7), abort()); | |
1529 | kw = SCM_PACK (kw_bits); | |
1530 | ||
1531 | nargs = FRAME_LOCALS_COUNT (); | |
1532 | ||
1533 | /* look in optionals for first keyword or last positional */ | |
1534 | /* starting after the last required positional arg */ | |
1535 | npositional = nreq; | |
1536 | while (/* while we have args */ | |
1537 | npositional < nargs | |
1538 | /* and we still have positionals to fill */ | |
1539 | && npositional < nreq_and_opt | |
1540 | /* and we haven't reached a keyword yet */ | |
1541 | && !scm_is_keyword (LOCAL_REF (npositional))) | |
1542 | /* bind this optional arg (by leaving it in place) */ | |
1543 | npositional++; | |
1544 | nkw = nargs - npositional; | |
1545 | /* shuffle non-positional arguments above ntotal */ | |
1546 | ALLOC_FRAME (ntotal + nkw); | |
1547 | n = nkw; | |
1548 | while (n--) | |
1549 | LOCAL_SET (ntotal + n, LOCAL_REF (npositional + n)); | |
1550 | /* and fill optionals & keyword args with SCM_UNDEFINED */ | |
1551 | n = npositional; | |
1552 | while (n < ntotal) | |
1553 | LOCAL_SET (n++, SCM_UNDEFINED); | |
1554 | ||
1555 | VM_ASSERT (has_rest || (nkw % 2) == 0, | |
1556 | vm_error_kwargs_length_not_even (SCM_FRAME_PROGRAM (fp))); | |
1557 | ||
1558 | /* Now bind keywords, in the order given. */ | |
1559 | for (n = 0; n < nkw; n++) | |
1560 | if (scm_is_keyword (LOCAL_REF (ntotal + n))) | |
1561 | { | |
1562 | SCM walk; | |
1563 | for (walk = kw; scm_is_pair (walk); walk = SCM_CDR (walk)) | |
1564 | if (scm_is_eq (SCM_CAAR (walk), LOCAL_REF (ntotal + n))) | |
1565 | { | |
1566 | SCM si = SCM_CDAR (walk); | |
1567 | LOCAL_SET (SCM_I_INUMP (si) ? SCM_I_INUM (si) : scm_to_uint32 (si), | |
1568 | LOCAL_REF (ntotal + n + 1)); | |
1569 | break; | |
1570 | } | |
1571 | VM_ASSERT (scm_is_pair (walk) || allow_other_keys, | |
28d5d253 MW |
1572 | vm_error_kwargs_unrecognized_keyword (SCM_FRAME_PROGRAM (fp), |
1573 | LOCAL_REF (ntotal + n))); | |
510ca126 AW |
1574 | n++; |
1575 | } | |
1576 | else | |
28d5d253 MW |
1577 | VM_ASSERT (has_rest, vm_error_kwargs_invalid_keyword (SCM_FRAME_PROGRAM (fp), |
1578 | LOCAL_REF (ntotal + n))); | |
510ca126 AW |
1579 | |
1580 | if (has_rest) | |
1581 | { | |
1582 | SCM rest = SCM_EOL; | |
1583 | n = nkw; | |
1584 | while (n--) | |
1585 | rest = scm_cons (LOCAL_REF (ntotal + n), rest); | |
1586 | LOCAL_SET (nreq_and_opt, rest); | |
1587 | } | |
1588 | ||
1589 | RESET_FRAME (ntotal); | |
1590 | ||
1591 | NEXT (4); | |
1592 | } | |
1593 | ||
1594 | /* bind-rest dst:24 | |
1595 | * | |
1596 | * Collect any arguments at or above DST into a list, and store that | |
1597 | * list at DST. | |
1598 | */ | |
286a0fb3 | 1599 | VM_DEFINE_OP (24, bind_rest, "bind-rest", OP1 (U8_U24) | OP_DST) |
510ca126 AW |
1600 | { |
1601 | scm_t_uint32 dst, nargs; | |
1602 | SCM rest = SCM_EOL; | |
1603 | ||
1604 | SCM_UNPACK_RTL_24 (op, dst); | |
1605 | nargs = FRAME_LOCALS_COUNT (); | |
1606 | ||
1607 | while (nargs-- > dst) | |
1608 | { | |
1609 | rest = scm_cons (LOCAL_REF (nargs), rest); | |
1610 | LOCAL_SET (nargs, SCM_UNDEFINED); | |
1611 | } | |
1612 | ||
1613 | LOCAL_SET (dst, rest); | |
1614 | ||
1615 | RESET_FRAME (dst + 1); | |
1616 | ||
1617 | NEXT (1); | |
1618 | } | |
1619 | ||
1620 | /* drop-values nlocals:24 | |
1621 | * | |
1622 | * Reset the stack pointer to only have space for NLOCALS values. | |
1623 | * Used after extracting values from an MV return. | |
1624 | */ | |
286a0fb3 | 1625 | VM_DEFINE_OP (25, drop_values, "drop-values", OP1 (U8_U24)) |
510ca126 AW |
1626 | { |
1627 | scm_t_bits nlocals; | |
1628 | ||
1629 | SCM_UNPACK_RTL_24 (op, nlocals); | |
1630 | ||
1631 | RESET_FRAME (nlocals); | |
1632 | ||
1633 | NEXT (1); | |
1634 | } | |
1635 | ||
1636 | ||
1637 | \f | |
1638 | ||
1639 | /* | |
1640 | * Branching instructions | |
1641 | */ | |
1642 | ||
1643 | /* br offset:24 | |
1644 | * | |
1645 | * Add OFFSET, a signed 24-bit number, to the current instruction | |
1646 | * pointer. | |
1647 | */ | |
286a0fb3 | 1648 | VM_DEFINE_OP (26, br, "br", OP1 (U8_L24)) |
510ca126 AW |
1649 | { |
1650 | scm_t_int32 offset = op; | |
1651 | offset >>= 8; /* Sign-extending shift. */ | |
1652 | NEXT (offset); | |
1653 | } | |
1654 | ||
1655 | /* br-if-true test:24 invert:1 _:7 offset:24 | |
1656 | * | |
1657 | * If the value in TEST is true for the purposes of Scheme, add | |
1658 | * OFFSET, a signed 24-bit number, to the current instruction pointer. | |
1659 | */ | |
286a0fb3 | 1660 | VM_DEFINE_OP (27, br_if_true, "br-if-true", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1661 | { |
1662 | BR_UNARY (x, scm_is_true (x)); | |
1663 | } | |
1664 | ||
1665 | /* br-if-null test:24 invert:1 _:7 offset:24 | |
1666 | * | |
1667 | * If the value in TEST is the end-of-list or Lisp nil, add OFFSET, a | |
1668 | * signed 24-bit number, to the current instruction pointer. | |
1669 | */ | |
286a0fb3 | 1670 | VM_DEFINE_OP (28, br_if_null, "br-if-null", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1671 | { |
1672 | BR_UNARY (x, scm_is_null (x)); | |
1673 | } | |
1674 | ||
1675 | /* br-if-nil test:24 invert:1 _:7 offset:24 | |
1676 | * | |
1677 | * If the value in TEST is false to Lisp, add OFFSET, a signed 24-bit | |
1678 | * number, to the current instruction pointer. | |
1679 | */ | |
286a0fb3 | 1680 | VM_DEFINE_OP (29, br_if_nil, "br-if-nil", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1681 | { |
1682 | BR_UNARY (x, scm_is_lisp_false (x)); | |
1683 | } | |
1684 | ||
1685 | /* br-if-pair test:24 invert:1 _:7 offset:24 | |
1686 | * | |
1687 | * If the value in TEST is a pair, add OFFSET, a signed 24-bit number, | |
1688 | * to the current instruction pointer. | |
1689 | */ | |
286a0fb3 | 1690 | VM_DEFINE_OP (30, br_if_pair, "br-if-pair", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1691 | { |
1692 | BR_UNARY (x, scm_is_pair (x)); | |
1693 | } | |
1694 | ||
1695 | /* br-if-struct test:24 invert:1 _:7 offset:24 | |
1696 | * | |
1697 | * If the value in TEST is a struct, add OFFSET, a signed 24-bit | |
1698 | * number, to the current instruction pointer. | |
1699 | */ | |
286a0fb3 | 1700 | VM_DEFINE_OP (31, br_if_struct, "br-if-struct", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1701 | { |
1702 | BR_UNARY (x, SCM_STRUCTP (x)); | |
1703 | } | |
1704 | ||
1705 | /* br-if-char test:24 invert:1 _:7 offset:24 | |
1706 | * | |
1707 | * If the value in TEST is a char, add OFFSET, a signed 24-bit number, | |
1708 | * to the current instruction pointer. | |
1709 | */ | |
286a0fb3 | 1710 | VM_DEFINE_OP (32, br_if_char, "br-if-char", OP2 (U8_U24, B1_X7_L24)) |
510ca126 AW |
1711 | { |
1712 | BR_UNARY (x, SCM_CHARP (x)); | |
1713 | } | |
1714 | ||
1715 | /* br-if-tc7 test:24 invert:1 tc7:7 offset:24 | |
1716 | * | |
1717 | * If the value in TEST has the TC7 given in the second word, add | |
1718 | * OFFSET, a signed 24-bit number, to the current instruction pointer. | |
1719 | */ | |
286a0fb3 | 1720 | VM_DEFINE_OP (33, br_if_tc7, "br-if-tc7", OP2 (U8_U24, B1_U7_L24)) |
510ca126 AW |
1721 | { |
1722 | BR_UNARY (x, SCM_HAS_TYP7 (x, (ip[1] >> 1) & 0x7f)); | |
1723 | } | |
1724 | ||
1725 | /* br-if-eq a:12 b:12 invert:1 _:7 offset:24 | |
1726 | * | |
1727 | * If the value in A is eq? to the value in B, add OFFSET, a signed | |
1728 | * 24-bit number, to the current instruction pointer. | |
1729 | */ | |
286a0fb3 | 1730 | VM_DEFINE_OP (34, br_if_eq, "br-if-eq", OP2 (U8_U12_U12, B1_X7_L24)) |
510ca126 AW |
1731 | { |
1732 | BR_BINARY (x, y, scm_is_eq (x, y)); | |
1733 | } | |
1734 | ||
1735 | /* br-if-eqv a:12 b:12 invert:1 _:7 offset:24 | |
1736 | * | |
1737 | * If the value in A is eqv? to the value in B, add OFFSET, a signed | |
1738 | * 24-bit number, to the current instruction pointer. | |
1739 | */ | |
286a0fb3 | 1740 | VM_DEFINE_OP (35, br_if_eqv, "br-if-eqv", OP2 (U8_U12_U12, B1_X7_L24)) |
510ca126 AW |
1741 | { |
1742 | BR_BINARY (x, y, | |
1743 | scm_is_eq (x, y) | |
1744 | || (SCM_NIMP (x) && SCM_NIMP (y) | |
1745 | && scm_is_true (scm_eqv_p (x, y)))); | |
1746 | } | |
1747 | ||
1748 | /* br-if-equal a:12 b:12 invert:1 _:7 offset:24 | |
1749 | * | |
1750 | * If the value in A is equal? to the value in B, add OFFSET, a signed | |
1751 | * 24-bit number, to the current instruction pointer. | |
1752 | */ | |
1753 | // FIXME: should sync_ip before calling out? | |
286a0fb3 | 1754 | VM_DEFINE_OP (36, br_if_equal, "br-if-equal", OP2 (U8_U12_U12, B1_X7_L24)) |
510ca126 AW |
1755 | { |
1756 | BR_BINARY (x, y, | |
1757 | scm_is_eq (x, y) | |
1758 | || (SCM_NIMP (x) && SCM_NIMP (y) | |
1759 | && scm_is_true (scm_equal_p (x, y)))); | |
1760 | } | |
1761 | ||
1762 | /* br-if-= a:12 b:12 _:8 offset:24 | |
1763 | * | |
1764 | * If the value in A is = to the value in B, add OFFSET, a signed | |
1765 | * 24-bit number, to the current instruction pointer. | |
1766 | */ | |
286a0fb3 | 1767 | VM_DEFINE_OP (37, br_if_ee, "br-if-=", OP2 (U8_U12_U12, X8_L24)) |
510ca126 AW |
1768 | { |
1769 | BR_ARITHMETIC (==, scm_num_eq_p); | |
1770 | } | |
1771 | ||
1772 | /* br-if-< a:12 b:12 _:8 offset:24 | |
1773 | * | |
1774 | * If the value in A is < to the value in B, add OFFSET, a signed | |
1775 | * 24-bit number, to the current instruction pointer. | |
1776 | */ | |
286a0fb3 | 1777 | VM_DEFINE_OP (38, br_if_lt, "br-if-<", OP2 (U8_U12_U12, X8_L24)) |
510ca126 AW |
1778 | { |
1779 | BR_ARITHMETIC (<, scm_less_p); | |
1780 | } | |
1781 | ||
1782 | /* br-if-<= a:12 b:12 _:8 offset:24 | |
1783 | * | |
1784 | * If the value in A is <= to the value in B, add OFFSET, a signed | |
1785 | * 24-bit number, to the current instruction pointer. | |
1786 | */ | |
286a0fb3 | 1787 | VM_DEFINE_OP (39, br_if_le, "br-if-<=", OP2 (U8_U12_U12, X8_L24)) |
510ca126 AW |
1788 | { |
1789 | BR_ARITHMETIC (<=, scm_leq_p); | |
1790 | } | |
1791 | ||
1792 | /* br-if-> a:12 b:12 _:8 offset:24 | |
1793 | * | |
1794 | * If the value in A is > to the value in B, add OFFSET, a signed | |
1795 | * 24-bit number, to the current instruction pointer. | |
1796 | */ | |
286a0fb3 | 1797 | VM_DEFINE_OP (40, br_if_gt, "br-if->", OP2 (U8_U12_U12, X8_L24)) |
510ca126 AW |
1798 | { |
1799 | BR_ARITHMETIC (>, scm_gr_p); | |
1800 | } | |
1801 | ||
1802 | /* br-if->= a:12 b:12 _:8 offset:24 | |
1803 | * | |
1804 | * If the value in A is >= to the value in B, add OFFSET, a signed | |
1805 | * 24-bit number, to the current instruction pointer. | |
1806 | */ | |
286a0fb3 | 1807 | VM_DEFINE_OP (41, br_if_ge, "br-if->=", OP2 (U8_U12_U12, X8_L24)) |
510ca126 AW |
1808 | { |
1809 | BR_ARITHMETIC (>=, scm_geq_p); | |
1810 | } | |
1811 | ||
1812 | ||
1813 | \f | |
1814 | ||
1815 | /* | |
1816 | * Lexical binding instructions | |
1817 | */ | |
1818 | ||
1819 | /* mov dst:12 src:12 | |
1820 | * | |
1821 | * Copy a value from one local slot to another. | |
1822 | */ | |
286a0fb3 | 1823 | VM_DEFINE_OP (42, mov, "mov", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
1824 | { |
1825 | scm_t_uint16 dst; | |
1826 | scm_t_uint16 src; | |
1827 | ||
1828 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
1829 | LOCAL_SET (dst, LOCAL_REF (src)); | |
1830 | ||
1831 | NEXT (1); | |
1832 | } | |
1833 | ||
1834 | /* long-mov dst:24 _:8 src:24 | |
1835 | * | |
1836 | * Copy a value from one local slot to another. | |
1837 | */ | |
286a0fb3 | 1838 | VM_DEFINE_OP (43, long_mov, "long-mov", OP2 (U8_U24, X8_U24) | OP_DST) |
510ca126 AW |
1839 | { |
1840 | scm_t_uint32 dst; | |
1841 | scm_t_uint32 src; | |
1842 | ||
1843 | SCM_UNPACK_RTL_24 (op, dst); | |
1844 | SCM_UNPACK_RTL_24 (ip[1], src); | |
1845 | LOCAL_SET (dst, LOCAL_REF (src)); | |
1846 | ||
1847 | NEXT (2); | |
1848 | } | |
1849 | ||
1850 | /* box dst:12 src:12 | |
1851 | * | |
1852 | * Create a new variable holding SRC, and place it in DST. | |
1853 | */ | |
286a0fb3 | 1854 | VM_DEFINE_OP (44, box, "box", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
1855 | { |
1856 | scm_t_uint16 dst, src; | |
1857 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
1858 | LOCAL_SET (dst, scm_cell (scm_tc7_variable, SCM_UNPACK (LOCAL_REF (src)))); | |
1859 | NEXT (1); | |
1860 | } | |
1861 | ||
1862 | /* empty-box dst:24 | |
1863 | * | |
1864 | * Create a new unbound variable, and place it in DST. Used in the | |
1865 | * general implementation of `letrec', in those cases that fix-letrec | |
1866 | * fails to fix. | |
1867 | */ | |
286a0fb3 | 1868 | VM_DEFINE_OP (45, empty_box, "empty-box", OP1 (U8_U24) | OP_DST) |
510ca126 AW |
1869 | { |
1870 | scm_t_uint32 dst; | |
1871 | SCM_UNPACK_RTL_24 (op, dst); | |
1872 | LOCAL_SET (dst, scm_cell (scm_tc7_variable, SCM_UNPACK (SCM_UNDEFINED))); | |
1873 | NEXT (1); | |
1874 | } | |
1875 | ||
1876 | /* box-ref dst:12 src:12 | |
1877 | * | |
1878 | * Unpack the variable at SRC into DST, asserting that the variable is | |
1879 | * actually bound. | |
1880 | */ | |
286a0fb3 | 1881 | VM_DEFINE_OP (46, box_ref, "box-ref", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
1882 | { |
1883 | scm_t_uint16 dst, src; | |
1884 | SCM var; | |
1885 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
1886 | var = LOCAL_REF (src); | |
1887 | VM_ASSERT (SCM_VARIABLEP (var), abort ()); | |
1888 | if (SCM_UNLIKELY (!VARIABLE_BOUNDP (var))) | |
1889 | { | |
1890 | SCM var_name; | |
1891 | /* Attempt to provide the variable name in the error message. */ | |
1892 | SYNC_IP (); | |
1893 | var_name = scm_module_reverse_lookup (scm_current_module (), var); | |
1894 | vm_error_unbound (SCM_FRAME_PROGRAM (fp), scm_is_true (var_name) ? var_name : var); | |
1895 | } | |
1896 | LOCAL_SET (dst, VARIABLE_REF (var)); | |
1897 | NEXT (1); | |
1898 | } | |
1899 | ||
1900 | /* box-set! dst:12 src:12 | |
1901 | * | |
1902 | * Set the contents of the variable at DST to SET. | |
1903 | */ | |
286a0fb3 | 1904 | VM_DEFINE_OP (47, box_set, "box-set!", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
1905 | { |
1906 | scm_t_uint16 dst, src; | |
1907 | SCM var; | |
1908 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
1909 | var = LOCAL_REF (dst); | |
1910 | VM_ASSERT (SCM_VARIABLEP (var), abort ()); | |
1911 | VARIABLE_SET (var, LOCAL_REF (src)); | |
1912 | NEXT (1); | |
1913 | } | |
1914 | ||
7396d216 | 1915 | /* make-closure dst:24 offset:32 _:8 nfree:24 |
510ca126 AW |
1916 | * |
1917 | * Make a new closure, and write it to DST. The code for the closure | |
1918 | * will be found at OFFSET words from the current IP. OFFSET is a | |
7396d216 AW |
1919 | * signed 32-bit integer. Space for NFREE free variables will be |
1920 | * allocated. | |
510ca126 | 1921 | */ |
286a0fb3 | 1922 | VM_DEFINE_OP (48, make_closure, "make-closure", OP3 (U8_U24, L32, X8_U24) | OP_DST) |
510ca126 AW |
1923 | { |
1924 | scm_t_uint32 dst, nfree, n; | |
1925 | scm_t_int32 offset; | |
1926 | SCM closure; | |
1927 | ||
1928 | SCM_UNPACK_RTL_24 (op, dst); | |
1929 | offset = ip[1]; | |
1930 | SCM_UNPACK_RTL_24 (ip[2], nfree); | |
1931 | ||
1932 | // FIXME: Assert range of nfree? | |
1933 | closure = scm_words (scm_tc7_rtl_program | (nfree << 16), nfree + 2); | |
1934 | SCM_SET_CELL_WORD_1 (closure, ip + offset); | |
7396d216 | 1935 | // FIXME: Elide these initializations? |
510ca126 | 1936 | for (n = 0; n < nfree; n++) |
7396d216 | 1937 | SCM_RTL_PROGRAM_FREE_VARIABLE_SET (closure, n, SCM_BOOL_F); |
510ca126 | 1938 | LOCAL_SET (dst, closure); |
7396d216 | 1939 | NEXT (3); |
510ca126 AW |
1940 | } |
1941 | ||
7396d216 | 1942 | /* free-ref dst:12 src:12 _:8 idx:24 |
510ca126 | 1943 | * |
7396d216 | 1944 | * Load free variable IDX from the closure SRC into local slot DST. |
510ca126 | 1945 | */ |
286a0fb3 | 1946 | VM_DEFINE_OP (49, free_ref, "free-ref", OP2 (U8_U12_U12, X8_U24) | OP_DST) |
510ca126 | 1947 | { |
7396d216 AW |
1948 | scm_t_uint16 dst, src; |
1949 | scm_t_uint32 idx; | |
1950 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
1951 | SCM_UNPACK_RTL_24 (ip[1], idx); | |
1952 | /* CHECK_FREE_VARIABLE (src); */ | |
1953 | LOCAL_SET (dst, SCM_RTL_PROGRAM_FREE_VARIABLE_REF (LOCAL_REF (src), idx)); | |
1954 | NEXT (2); | |
1955 | } | |
510ca126 | 1956 | |
7396d216 AW |
1957 | /* free-set! dst:12 src:12 _8 idx:24 |
1958 | * | |
1959 | * Set free variable IDX from the closure DST to SRC. | |
1960 | */ | |
286a0fb3 | 1961 | VM_DEFINE_OP (50, free_set, "free-set!", OP2 (U8_U12_U12, X8_U24)) |
7396d216 AW |
1962 | { |
1963 | scm_t_uint16 dst, src; | |
1964 | scm_t_uint32 idx; | |
1965 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
1966 | SCM_UNPACK_RTL_24 (ip[1], idx); | |
1967 | /* CHECK_FREE_VARIABLE (src); */ | |
1968 | SCM_RTL_PROGRAM_FREE_VARIABLE_SET (LOCAL_REF (dst), idx, LOCAL_REF (src)); | |
1969 | NEXT (2); | |
510ca126 AW |
1970 | } |
1971 | ||
1972 | ||
1973 | \f | |
1974 | ||
1975 | /* | |
1976 | * Immediates and statically allocated non-immediates | |
1977 | */ | |
1978 | ||
1979 | /* make-short-immediate dst:8 low-bits:16 | |
1980 | * | |
1981 | * Make an immediate whose low bits are LOW-BITS, and whose top bits are | |
1982 | * 0. | |
1983 | */ | |
286a0fb3 | 1984 | VM_DEFINE_OP (51, make_short_immediate, "make-short-immediate", OP1 (U8_U8_I16) | OP_DST) |
510ca126 AW |
1985 | { |
1986 | scm_t_uint8 dst; | |
1987 | scm_t_bits val; | |
1988 | ||
1989 | SCM_UNPACK_RTL_8_16 (op, dst, val); | |
1990 | LOCAL_SET (dst, SCM_PACK (val)); | |
1991 | NEXT (1); | |
1992 | } | |
1993 | ||
1994 | /* make-long-immediate dst:24 low-bits:32 | |
1995 | * | |
1996 | * Make an immediate whose low bits are LOW-BITS, and whose top bits are | |
1997 | * 0. | |
1998 | */ | |
286a0fb3 | 1999 | VM_DEFINE_OP (52, make_long_immediate, "make-long-immediate", OP2 (U8_U24, I32)) |
510ca126 AW |
2000 | { |
2001 | scm_t_uint8 dst; | |
2002 | scm_t_bits val; | |
2003 | ||
2004 | SCM_UNPACK_RTL_24 (op, dst); | |
2005 | val = ip[1]; | |
2006 | LOCAL_SET (dst, SCM_PACK (val)); | |
2007 | NEXT (2); | |
2008 | } | |
2009 | ||
2010 | /* make-long-long-immediate dst:24 high-bits:32 low-bits:32 | |
2011 | * | |
2012 | * Make an immediate with HIGH-BITS and LOW-BITS. | |
2013 | */ | |
286a0fb3 | 2014 | VM_DEFINE_OP (53, make_long_long_immediate, "make-long-long-immediate", OP3 (U8_U24, A32, B32) | OP_DST) |
510ca126 AW |
2015 | { |
2016 | scm_t_uint8 dst; | |
2017 | scm_t_bits val; | |
2018 | ||
2019 | SCM_UNPACK_RTL_24 (op, dst); | |
2020 | #if SIZEOF_SCM_T_BITS > 4 | |
2021 | val = ip[1]; | |
2022 | val <<= 32; | |
2023 | val |= ip[2]; | |
2024 | #else | |
2025 | ASSERT (ip[1] == 0); | |
2026 | val = ip[2]; | |
2027 | #endif | |
2028 | LOCAL_SET (dst, SCM_PACK (val)); | |
2029 | NEXT (3); | |
2030 | } | |
2031 | ||
2032 | /* make-non-immediate dst:24 offset:32 | |
2033 | * | |
2034 | * Load a pointer to statically allocated memory into DST. The | |
2035 | * object's memory is will be found OFFSET 32-bit words away from the | |
2036 | * current instruction pointer. OFFSET is a signed value. The | |
2037 | * intention here is that the compiler would produce an object file | |
2038 | * containing the words of a non-immediate object, and this | |
2039 | * instruction creates a pointer to that memory, effectively | |
2040 | * resurrecting that object. | |
2041 | * | |
2042 | * Whether the object is mutable or immutable depends on where it was | |
2043 | * allocated by the compiler, and loaded by the loader. | |
2044 | */ | |
286a0fb3 | 2045 | VM_DEFINE_OP (54, make_non_immediate, "make-non-immediate", OP2 (U8_U24, N32) | OP_DST) |
510ca126 AW |
2046 | { |
2047 | scm_t_uint32 dst; | |
2048 | scm_t_int32 offset; | |
2049 | scm_t_uint32* loc; | |
2050 | scm_t_bits unpacked; | |
2051 | ||
2052 | SCM_UNPACK_RTL_24 (op, dst); | |
2053 | offset = ip[1]; | |
2054 | loc = ip + offset; | |
2055 | unpacked = (scm_t_bits) loc; | |
2056 | ||
2057 | VM_ASSERT (!(unpacked & 0x7), abort()); | |
2058 | ||
2059 | LOCAL_SET (dst, SCM_PACK (unpacked)); | |
2060 | ||
2061 | NEXT (2); | |
2062 | } | |
2063 | ||
2064 | /* static-ref dst:24 offset:32 | |
2065 | * | |
2066 | * Load a SCM value into DST. The SCM value will be fetched from | |
2067 | * memory, OFFSET 32-bit words away from the current instruction | |
2068 | * pointer. OFFSET is a signed value. | |
2069 | * | |
2070 | * The intention is for this instruction to be used to load constants | |
2071 | * that the compiler is unable to statically allocate, like symbols. | |
2072 | * These values would be initialized when the object file loads. | |
2073 | */ | |
286a0fb3 | 2074 | VM_DEFINE_OP (55, static_ref, "static-ref", OP2 (U8_U24, S32)) |
510ca126 AW |
2075 | { |
2076 | scm_t_uint32 dst; | |
2077 | scm_t_int32 offset; | |
2078 | scm_t_uint32* loc; | |
2079 | scm_t_uintptr loc_bits; | |
2080 | ||
2081 | SCM_UNPACK_RTL_24 (op, dst); | |
2082 | offset = ip[1]; | |
2083 | loc = ip + offset; | |
2084 | loc_bits = (scm_t_uintptr) loc; | |
2085 | VM_ASSERT (ALIGNED_P (loc, SCM), abort()); | |
2086 | ||
2087 | LOCAL_SET (dst, *((SCM *) loc_bits)); | |
2088 | ||
2089 | NEXT (2); | |
2090 | } | |
2091 | ||
2092 | /* static-set! src:24 offset:32 | |
2093 | * | |
2094 | * Store a SCM value into memory, OFFSET 32-bit words away from the | |
2095 | * current instruction pointer. OFFSET is a signed value. | |
2096 | */ | |
286a0fb3 | 2097 | VM_DEFINE_OP (56, static_set, "static-set!", OP2 (U8_U24, LO32)) |
510ca126 AW |
2098 | { |
2099 | scm_t_uint32 src; | |
2100 | scm_t_int32 offset; | |
2101 | scm_t_uint32* loc; | |
2102 | ||
2103 | SCM_UNPACK_RTL_24 (op, src); | |
2104 | offset = ip[1]; | |
2105 | loc = ip + offset; | |
2106 | VM_ASSERT (ALIGNED_P (loc, SCM), abort()); | |
2107 | ||
2108 | *((SCM *) loc) = LOCAL_REF (src); | |
2109 | ||
2110 | NEXT (2); | |
2111 | } | |
2112 | ||
2113 | /* link-procedure! src:24 offset:32 | |
2114 | * | |
2115 | * Set the code pointer of the procedure in SRC to point OFFSET 32-bit | |
2116 | * words away from the current instruction pointer. OFFSET is a | |
2117 | * signed value. | |
2118 | */ | |
286a0fb3 | 2119 | VM_DEFINE_OP (57, link_procedure, "link-procedure!", OP2 (U8_U24, L32)) |
510ca126 AW |
2120 | { |
2121 | scm_t_uint32 src; | |
2122 | scm_t_int32 offset; | |
2123 | scm_t_uint32* loc; | |
2124 | ||
2125 | SCM_UNPACK_RTL_24 (op, src); | |
2126 | offset = ip[1]; | |
2127 | loc = ip + offset; | |
2128 | ||
2129 | SCM_SET_CELL_WORD_1 (LOCAL_REF (src), (scm_t_bits) loc); | |
2130 | ||
2131 | NEXT (2); | |
2132 | } | |
2133 | ||
2134 | \f | |
2135 | ||
2136 | /* | |
2137 | * Mutable top-level bindings | |
2138 | */ | |
2139 | ||
2140 | /* There are three slightly different ways to resolve toplevel | |
2141 | variables. | |
2142 | ||
2143 | 1. A toplevel reference outside of a function. These need to be | |
2144 | looked up when the expression is evaluated -- no later, and no | |
2145 | before. They are looked up relative to the module that is | |
2146 | current when the expression is evaluated. For example: | |
2147 | ||
2148 | (if (foo) a b) | |
2149 | ||
2150 | The "resolve" instruction resolves the variable (box), and then | |
2151 | access is via box-ref or box-set!. | |
2152 | ||
2153 | 2. A toplevel reference inside a function. These are looked up | |
2154 | relative to the module that was current when the function was | |
2155 | defined. Unlike code at the toplevel, which is usually run only | |
2156 | once, these bindings benefit from memoized lookup, in which the | |
2157 | variable resulting from the lookup is cached in the function. | |
2158 | ||
2159 | (lambda () (if (foo) a b)) | |
2160 | ||
2161 | Although one can use resolve and box-ref, the toplevel-ref and | |
2162 | toplevel-set! instructions are better for references. | |
2163 | ||
2164 | 3. A reference to an identifier with respect to a particular | |
2165 | module. This can happen for primitive references, and | |
2166 | references residualized by macro expansions. These can be | |
2167 | cached or not, depending on whether they are in a lambda or not. | |
2168 | ||
2169 | (@ (foo bar) a) | |
2170 | (@@ (foo bar) a) | |
2171 | ||
2172 | For these, one can use resolve-module, resolve, and the box | |
2173 | interface, though there is also module-ref as a shortcut. | |
2174 | */ | |
2175 | ||
2176 | /* current-module dst:24 | |
2177 | * | |
2178 | * Store the current module in DST. | |
2179 | */ | |
286a0fb3 | 2180 | VM_DEFINE_OP (58, current_module, "current-module", OP1 (U8_U24) | OP_DST) |
510ca126 AW |
2181 | { |
2182 | scm_t_uint32 dst; | |
2183 | ||
2184 | SCM_UNPACK_RTL_24 (op, dst); | |
2185 | ||
2186 | SYNC_IP (); | |
2187 | LOCAL_SET (dst, scm_current_module ()); | |
2188 | ||
2189 | NEXT (1); | |
2190 | } | |
2191 | ||
2192 | /* resolve dst:8 mod:8 sym:8 | |
2193 | * | |
2194 | * Resolve SYM in MOD, and place the resulting variable in DST. | |
2195 | */ | |
286a0fb3 | 2196 | VM_DEFINE_OP (59, resolve, "resolve", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2197 | { |
2198 | scm_t_uint8 dst, mod, sym; | |
2199 | ||
2200 | SCM_UNPACK_RTL_8_8_8 (op, dst, mod, sym); | |
2201 | ||
2202 | SYNC_IP (); | |
2203 | LOCAL_SET (dst, scm_module_lookup (LOCAL_REF (mod), LOCAL_REF (sym))); | |
2204 | ||
2205 | NEXT (1); | |
2206 | } | |
2207 | ||
2208 | /* resolve-module dst:8 name:8 public:8 | |
2209 | * | |
2210 | * Resolve a module with name NAME, placing it in DST. If PUBLIC is | |
2211 | * nonzero, resolve the public interface, otherwise use the private | |
2212 | * interface. | |
2213 | */ | |
286a0fb3 | 2214 | VM_DEFINE_OP (60, resolve_module, "resolve-module", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2215 | { |
2216 | scm_t_uint8 dst, name, public; | |
2217 | SCM mod; | |
2218 | ||
2219 | SCM_UNPACK_RTL_8_8_8 (op, dst, name, public); | |
2220 | ||
2221 | SYNC_IP (); | |
2222 | mod = scm_resolve_module (LOCAL_REF (name)); | |
2223 | if (public) | |
2224 | mod = scm_module_public_interface (mod); | |
2225 | LOCAL_SET (dst, mod); | |
2226 | ||
2227 | NEXT (1); | |
2228 | } | |
2229 | ||
2230 | /* define sym:12 val:12 | |
2231 | * | |
2232 | * Look up a binding for SYM in the current module, creating it if | |
2233 | * necessary. Set its value to VAL. | |
2234 | */ | |
286a0fb3 | 2235 | VM_DEFINE_OP (61, define, "define", OP1 (U8_U12_U12)) |
510ca126 AW |
2236 | { |
2237 | scm_t_uint16 sym, val; | |
2238 | SCM_UNPACK_RTL_12_12 (op, sym, val); | |
2239 | SYNC_IP (); | |
2240 | scm_define (LOCAL_REF (sym), LOCAL_REF (val)); | |
2241 | NEXT (1); | |
2242 | } | |
2243 | ||
2244 | /* toplevel-ref dst:24 var-offset:32 mod-offset:32 sym-offset:32 | |
2245 | * | |
2246 | * Load a SCM value. The SCM value will be fetched from memory, | |
2247 | * VAR-OFFSET 32-bit words away from the current instruction pointer. | |
2248 | * VAR-OFFSET is a signed value. Up to here, toplevel-ref is like | |
2249 | * static-ref. | |
2250 | * | |
2251 | * Then, if the loaded value is a variable, the value of the variable | |
2252 | * is placed in DST, and control flow continues. | |
2253 | * | |
2254 | * Otherwise, we have to resolve the variable. In that case we load | |
2255 | * the module from MOD-OFFSET, just as we loaded the variable. | |
2256 | * Usually the module gets set when the closure is created. The name | |
2257 | * is an offset to a symbol. | |
2258 | * | |
2259 | * We use the module and the string to resolve the variable, raising | |
2260 | * an error if it is unbound, unbox it into DST, and cache the | |
2261 | * resolved variable so that we will hit the cache next time. | |
2262 | */ | |
286a0fb3 | 2263 | VM_DEFINE_OP (62, toplevel_ref, "toplevel-ref", OP4 (U8_U24, S32, S32, N32) | OP_DST) |
510ca126 AW |
2264 | { |
2265 | scm_t_uint32 dst; | |
2266 | scm_t_int32 var_offset; | |
2267 | scm_t_uint32* var_loc_u32; | |
2268 | SCM *var_loc; | |
2269 | SCM var; | |
2270 | ||
2271 | SCM_UNPACK_RTL_24 (op, dst); | |
2272 | var_offset = ip[1]; | |
2273 | var_loc_u32 = ip + var_offset; | |
2274 | VM_ASSERT (ALIGNED_P (var_loc_u32, SCM), abort()); | |
2275 | var_loc = (SCM *) var_loc_u32; | |
2276 | var = *var_loc; | |
2277 | ||
2278 | if (SCM_UNLIKELY (!SCM_VARIABLEP (var))) | |
2279 | { | |
2280 | SCM mod, sym; | |
2281 | scm_t_int32 mod_offset = ip[2]; /* signed */ | |
2282 | scm_t_int32 sym_offset = ip[3]; /* signed */ | |
2283 | scm_t_uint32 *mod_loc = ip + mod_offset; | |
2284 | scm_t_uint32 *sym_loc = ip + sym_offset; | |
2285 | ||
2286 | SYNC_IP (); | |
2287 | ||
2288 | VM_ASSERT (ALIGNED_P (mod_loc, SCM), abort()); | |
2289 | VM_ASSERT (ALIGNED_P (sym_loc, SCM), abort()); | |
2290 | ||
2291 | mod = *((SCM *) mod_loc); | |
2292 | sym = *((SCM *) sym_loc); | |
2293 | ||
2294 | var = scm_module_lookup (mod, sym); | |
2295 | VM_ASSERT (VARIABLE_BOUNDP (var), vm_error_unbound (fp[-1], sym)); | |
2296 | ||
2297 | *var_loc = var; | |
2298 | } | |
2299 | ||
2300 | LOCAL_SET (dst, VARIABLE_REF (var)); | |
2301 | NEXT (4); | |
2302 | } | |
2303 | ||
2304 | /* toplevel-set! src:24 var-offset:32 mod-offset:32 sym-offset:32 | |
2305 | * | |
2306 | * Set a top-level variable from a variable cache cell. The variable | |
2307 | * is resolved as in toplevel-ref. | |
2308 | */ | |
286a0fb3 | 2309 | VM_DEFINE_OP (63, toplevel_set, "toplevel-set!", OP4 (U8_U24, S32, S32, N32)) |
510ca126 AW |
2310 | { |
2311 | scm_t_uint32 src; | |
2312 | scm_t_int32 var_offset; | |
2313 | scm_t_uint32* var_loc_u32; | |
2314 | SCM *var_loc; | |
2315 | SCM var; | |
2316 | ||
2317 | SCM_UNPACK_RTL_24 (op, src); | |
2318 | var_offset = ip[1]; | |
2319 | var_loc_u32 = ip + var_offset; | |
2320 | VM_ASSERT (ALIGNED_P (var_loc_u32, SCM), abort()); | |
2321 | var_loc = (SCM *) var_loc_u32; | |
2322 | var = *var_loc; | |
2323 | ||
2324 | if (SCM_UNLIKELY (!SCM_VARIABLEP (var))) | |
2325 | { | |
2326 | SCM mod, sym; | |
2327 | scm_t_int32 mod_offset = ip[2]; /* signed */ | |
2328 | scm_t_int32 sym_offset = ip[3]; /* signed */ | |
2329 | scm_t_uint32 *mod_loc = ip + mod_offset; | |
2330 | scm_t_uint32 *sym_loc = ip + sym_offset; | |
2331 | ||
2332 | SYNC_IP (); | |
2333 | ||
2334 | VM_ASSERT (ALIGNED_P (mod_loc, SCM), abort()); | |
2335 | VM_ASSERT (ALIGNED_P (sym_loc, SCM), abort()); | |
2336 | ||
2337 | mod = *((SCM *) mod_loc); | |
2338 | sym = *((SCM *) sym_loc); | |
2339 | ||
2340 | var = scm_module_lookup (mod, sym); | |
2341 | ||
2342 | *var_loc = var; | |
2343 | } | |
2344 | ||
2345 | VARIABLE_SET (var, LOCAL_REF (src)); | |
2346 | NEXT (4); | |
2347 | } | |
2348 | ||
2349 | /* module-ref dst:24 var-offset:32 mod-offset:32 sym-offset:32 | |
2350 | * | |
2351 | * Like toplevel-ref, except MOD-OFFSET points at the name of a module | |
2352 | * instead of the module itself. | |
2353 | */ | |
286a0fb3 | 2354 | VM_DEFINE_OP (64, module_ref, "module-ref", OP4 (U8_U24, S32, N32, N32) | OP_DST) |
510ca126 AW |
2355 | { |
2356 | scm_t_uint32 dst; | |
2357 | scm_t_int32 var_offset; | |
2358 | scm_t_uint32* var_loc_u32; | |
2359 | SCM *var_loc; | |
2360 | SCM var; | |
2361 | ||
2362 | SCM_UNPACK_RTL_24 (op, dst); | |
2363 | var_offset = ip[1]; | |
2364 | var_loc_u32 = ip + var_offset; | |
2365 | VM_ASSERT (ALIGNED_P (var_loc_u32, SCM), abort()); | |
2366 | var_loc = (SCM *) var_loc_u32; | |
2367 | var = *var_loc; | |
2368 | ||
2369 | if (SCM_UNLIKELY (!SCM_VARIABLEP (var))) | |
2370 | { | |
2371 | SCM modname, sym; | |
2372 | scm_t_int32 modname_offset = ip[2]; /* signed */ | |
2373 | scm_t_int32 sym_offset = ip[3]; /* signed */ | |
2374 | scm_t_uint32 *modname_words = ip + modname_offset; | |
2375 | scm_t_uint32 *sym_loc = ip + sym_offset; | |
2376 | ||
2377 | SYNC_IP (); | |
2378 | ||
2379 | VM_ASSERT (!(((scm_t_uintptr) modname_words) & 0x7), abort()); | |
2380 | VM_ASSERT (ALIGNED_P (sym_loc, SCM), abort()); | |
2381 | ||
2382 | modname = SCM_PACK ((scm_t_bits) modname_words); | |
2383 | sym = *((SCM *) sym_loc); | |
2384 | ||
2385 | if (scm_is_true (SCM_CAR (modname))) | |
2386 | var = scm_public_lookup (SCM_CDR (modname), sym); | |
2387 | else | |
2388 | var = scm_private_lookup (SCM_CDR (modname), sym); | |
2389 | ||
2390 | VM_ASSERT (VARIABLE_BOUNDP (var), vm_error_unbound (fp[-1], sym)); | |
2391 | ||
2392 | *var_loc = var; | |
2393 | } | |
2394 | ||
2395 | LOCAL_SET (dst, VARIABLE_REF (var)); | |
2396 | NEXT (4); | |
2397 | } | |
2398 | ||
2399 | /* module-set! src:24 var-offset:32 mod-offset:32 sym-offset:32 | |
2400 | * | |
2401 | * Like toplevel-set!, except MOD-OFFSET points at the name of a module | |
2402 | * instead of the module itself. | |
2403 | */ | |
286a0fb3 | 2404 | VM_DEFINE_OP (65, module_set, "module-set!", OP4 (U8_U24, S32, N32, N32)) |
510ca126 AW |
2405 | { |
2406 | scm_t_uint32 src; | |
2407 | scm_t_int32 var_offset; | |
2408 | scm_t_uint32* var_loc_u32; | |
2409 | SCM *var_loc; | |
2410 | SCM var; | |
2411 | ||
2412 | SCM_UNPACK_RTL_24 (op, src); | |
2413 | var_offset = ip[1]; | |
2414 | var_loc_u32 = ip + var_offset; | |
2415 | VM_ASSERT (ALIGNED_P (var_loc_u32, SCM), abort()); | |
2416 | var_loc = (SCM *) var_loc_u32; | |
2417 | var = *var_loc; | |
2418 | ||
2419 | if (SCM_UNLIKELY (!SCM_VARIABLEP (var))) | |
2420 | { | |
2421 | SCM modname, sym; | |
2422 | scm_t_int32 modname_offset = ip[2]; /* signed */ | |
2423 | scm_t_int32 sym_offset = ip[3]; /* signed */ | |
2424 | scm_t_uint32 *modname_words = ip + modname_offset; | |
2425 | scm_t_uint32 *sym_loc = ip + sym_offset; | |
2426 | ||
2427 | SYNC_IP (); | |
2428 | ||
2429 | VM_ASSERT (!(((scm_t_uintptr) modname_words) & 0x7), abort()); | |
2430 | VM_ASSERT (ALIGNED_P (sym_loc, SCM), abort()); | |
2431 | ||
2432 | modname = SCM_PACK ((scm_t_bits) modname_words); | |
2433 | sym = *((SCM *) sym_loc); | |
2434 | ||
2435 | if (scm_is_true (SCM_CAR (modname))) | |
2436 | var = scm_public_lookup (SCM_CDR (modname), sym); | |
2437 | else | |
2438 | var = scm_private_lookup (SCM_CDR (modname), sym); | |
2439 | ||
2440 | *var_loc = var; | |
2441 | } | |
2442 | ||
2443 | VARIABLE_SET (var, LOCAL_REF (src)); | |
2444 | NEXT (4); | |
2445 | } | |
2446 | ||
2447 | \f | |
2448 | ||
2449 | /* | |
2450 | * The dynamic environment | |
2451 | */ | |
2452 | ||
2453 | /* prompt tag:24 flags:8 handler-offset:24 | |
2454 | * | |
2455 | * Push a new prompt on the dynamic stack, with a tag from TAG and a | |
2456 | * handler at HANDLER-OFFSET words from the current IP. The handler | |
2457 | * will expect a multiple-value return. | |
2458 | */ | |
286a0fb3 | 2459 | VM_DEFINE_OP (66, prompt, "prompt", OP2 (U8_U24, U8_L24)) |
510ca126 AW |
2460 | #if 0 |
2461 | { | |
2462 | scm_t_uint32 tag; | |
2463 | scm_t_int32 offset; | |
2464 | scm_t_uint8 escape_only_p; | |
2465 | scm_t_dynstack_prompt_flags flags; | |
2466 | ||
2467 | SCM_UNPACK_RTL_24 (op, tag); | |
2468 | escape_only_p = ip[1] & 0xff; | |
2469 | offset = ip[1]; | |
2470 | offset >>= 8; /* Sign extension */ | |
2471 | ||
2472 | /* Push the prompt onto the dynamic stack. */ | |
2473 | flags = escape_only_p ? SCM_F_DYNSTACK_PROMPT_ESCAPE_ONLY : 0; | |
2474 | scm_dynstack_push_prompt (¤t_thread->dynstack, flags, | |
2475 | LOCAL_REF (tag), | |
2476 | fp, vp->sp, ip + offset, ®isters); | |
2477 | NEXT (2); | |
2478 | } | |
2479 | #else | |
2480 | abort(); | |
2481 | #endif | |
2482 | ||
2483 | /* wind winder:12 unwinder:12 | |
2484 | * | |
2485 | * Push wind and unwind procedures onto the dynamic stack. Note that | |
2486 | * neither are actually called; the compiler should emit calls to wind | |
2487 | * and unwind for the normal dynamic-wind control flow. Also note that | |
2488 | * the compiler should have inserted checks that they wind and unwind | |
2489 | * procs are thunks, if it could not prove that to be the case. | |
2490 | */ | |
286a0fb3 | 2491 | VM_DEFINE_OP (67, wind, "wind", OP1 (U8_U12_U12)) |
510ca126 AW |
2492 | { |
2493 | scm_t_uint16 winder, unwinder; | |
2494 | SCM_UNPACK_RTL_12_12 (op, winder, unwinder); | |
2495 | scm_dynstack_push_dynwind (¤t_thread->dynstack, | |
2496 | LOCAL_REF (winder), LOCAL_REF (unwinder)); | |
2497 | NEXT (1); | |
2498 | } | |
2499 | ||
b2171312 | 2500 | /* abort tag:24 _:8 from:24 |
510ca126 | 2501 | * |
b2171312 AW |
2502 | * Return a number of values to a prompt handler. The values are |
2503 | * expected in a frame pushed on at FROM. | |
510ca126 | 2504 | */ |
b2171312 | 2505 | VM_DEFINE_OP (68, abort, "abort", OP2 (U8_U24, X8_U24)) |
510ca126 AW |
2506 | #if 0 |
2507 | { | |
b2171312 AW |
2508 | scm_t_uint32 tag, from, nvalues; |
2509 | SCM *base; | |
510ca126 AW |
2510 | |
2511 | SCM_UNPACK_RTL_24 (op, tag); | |
b2171312 AW |
2512 | SCM_UNPACK_RTL_24 (ip[1], from); |
2513 | base = (fp - 1) + from + 3; | |
2514 | nvalues = FRAME_LOCALS_COUNT () - from - 3; | |
510ca126 AW |
2515 | |
2516 | SYNC_IP (); | |
b2171312 | 2517 | vm_abort (vm, LOCAL_REF (tag), base, nvalues, ®isters); |
510ca126 AW |
2518 | |
2519 | /* vm_abort should not return */ | |
2520 | abort (); | |
2521 | } | |
2522 | #else | |
2523 | abort(); | |
2524 | #endif | |
2525 | ||
2526 | /* unwind _:24 | |
2527 | * | |
2528 | * A normal exit from the dynamic extent of an expression. Pop the top | |
2529 | * entry off of the dynamic stack. | |
2530 | */ | |
286a0fb3 | 2531 | VM_DEFINE_OP (69, unwind, "unwind", OP1 (U8_X24)) |
510ca126 AW |
2532 | { |
2533 | scm_dynstack_pop (¤t_thread->dynstack); | |
2534 | NEXT (1); | |
2535 | } | |
2536 | ||
98eaef1b | 2537 | /* push-fluid fluid:12 value:12 |
510ca126 AW |
2538 | * |
2539 | * Dynamically bind N fluids to values. The fluids are expected to be | |
2540 | * allocated in a continguous range on the stack, starting from | |
2541 | * FLUID-BASE. The values do not have this restriction. | |
2542 | */ | |
286a0fb3 | 2543 | VM_DEFINE_OP (70, push_fluid, "push-fluid", OP1 (U8_U12_U12)) |
510ca126 | 2544 | { |
98eaef1b | 2545 | scm_t_uint32 fluid, value; |
510ca126 | 2546 | |
98eaef1b | 2547 | SCM_UNPACK_RTL_12_12 (op, fluid, value); |
510ca126 | 2548 | |
98eaef1b AW |
2549 | scm_dynstack_push_fluid (¤t_thread->dynstack, |
2550 | fp[fluid], fp[value], | |
2551 | current_thread->dynamic_state); | |
2552 | NEXT (1); | |
510ca126 | 2553 | } |
510ca126 | 2554 | |
98eaef1b | 2555 | /* pop-fluid _:24 |
510ca126 AW |
2556 | * |
2557 | * Leave the dynamic extent of a with-fluids expression, restoring the | |
2558 | * fluids to their previous values. | |
2559 | */ | |
286a0fb3 | 2560 | VM_DEFINE_OP (71, pop_fluid, "pop-fluid", OP1 (U8_X24)) |
510ca126 AW |
2561 | { |
2562 | /* This function must not allocate. */ | |
98eaef1b AW |
2563 | scm_dynstack_unwind_fluid (¤t_thread->dynstack, |
2564 | current_thread->dynamic_state); | |
510ca126 AW |
2565 | NEXT (1); |
2566 | } | |
2567 | ||
2568 | /* fluid-ref dst:12 src:12 | |
2569 | * | |
2570 | * Reference the fluid in SRC, and place the value in DST. | |
2571 | */ | |
286a0fb3 | 2572 | VM_DEFINE_OP (72, fluid_ref, "fluid-ref", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2573 | { |
2574 | scm_t_uint16 dst, src; | |
2575 | size_t num; | |
2576 | SCM fluid, fluids; | |
2577 | ||
2578 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
2579 | fluid = LOCAL_REF (src); | |
2580 | fluids = SCM_I_DYNAMIC_STATE_FLUIDS (current_thread->dynamic_state); | |
2581 | if (SCM_UNLIKELY (!SCM_FLUID_P (fluid)) | |
2582 | || ((num = SCM_I_FLUID_NUM (fluid)) >= SCM_SIMPLE_VECTOR_LENGTH (fluids))) | |
2583 | { | |
2584 | /* Punt dynstate expansion and error handling to the C proc. */ | |
2585 | SYNC_IP (); | |
2586 | LOCAL_SET (dst, scm_fluid_ref (fluid)); | |
2587 | } | |
2588 | else | |
2589 | { | |
2590 | SCM val = SCM_SIMPLE_VECTOR_REF (fluids, num); | |
2591 | if (scm_is_eq (val, SCM_UNDEFINED)) | |
2592 | val = SCM_I_FLUID_DEFAULT (fluid); | |
2593 | VM_ASSERT (!scm_is_eq (val, SCM_UNDEFINED), | |
2594 | vm_error_unbound_fluid (program, fluid)); | |
2595 | LOCAL_SET (dst, val); | |
2596 | } | |
2597 | ||
2598 | NEXT (1); | |
2599 | } | |
2600 | ||
2601 | /* fluid-set fluid:12 val:12 | |
2602 | * | |
2603 | * Set the value of the fluid in DST to the value in SRC. | |
2604 | */ | |
286a0fb3 | 2605 | VM_DEFINE_OP (73, fluid_set, "fluid-set", OP1 (U8_U12_U12)) |
510ca126 AW |
2606 | { |
2607 | scm_t_uint16 a, b; | |
2608 | size_t num; | |
2609 | SCM fluid, fluids; | |
2610 | ||
2611 | SCM_UNPACK_RTL_12_12 (op, a, b); | |
2612 | fluid = LOCAL_REF (a); | |
2613 | fluids = SCM_I_DYNAMIC_STATE_FLUIDS (current_thread->dynamic_state); | |
2614 | if (SCM_UNLIKELY (!SCM_FLUID_P (fluid)) | |
2615 | || ((num = SCM_I_FLUID_NUM (fluid)) >= SCM_SIMPLE_VECTOR_LENGTH (fluids))) | |
2616 | { | |
2617 | /* Punt dynstate expansion and error handling to the C proc. */ | |
2618 | SYNC_IP (); | |
2619 | scm_fluid_set_x (fluid, LOCAL_REF (b)); | |
2620 | } | |
2621 | else | |
2622 | SCM_SIMPLE_VECTOR_SET (fluids, num, LOCAL_REF (b)); | |
2623 | ||
2624 | NEXT (1); | |
2625 | } | |
2626 | ||
2627 | ||
2628 | \f | |
2629 | ||
2630 | /* | |
2631 | * Strings, symbols, and keywords | |
2632 | */ | |
2633 | ||
2634 | /* string-length dst:12 src:12 | |
2635 | * | |
2636 | * Store the length of the string in SRC in DST. | |
2637 | */ | |
286a0fb3 | 2638 | VM_DEFINE_OP (74, string_length, "string-length", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2639 | { |
2640 | ARGS1 (str); | |
2641 | if (SCM_LIKELY (scm_is_string (str))) | |
2642 | RETURN (SCM_I_MAKINUM (scm_i_string_length (str))); | |
2643 | else | |
2644 | { | |
2645 | SYNC_IP (); | |
2646 | RETURN (scm_string_length (str)); | |
2647 | } | |
2648 | } | |
2649 | ||
2650 | /* string-ref dst:8 src:8 idx:8 | |
2651 | * | |
2652 | * Fetch the character at position IDX in the string in SRC, and store | |
2653 | * it in DST. | |
2654 | */ | |
286a0fb3 | 2655 | VM_DEFINE_OP (75, string_ref, "string-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2656 | { |
2657 | scm_t_signed_bits i = 0; | |
2658 | ARGS2 (str, idx); | |
2659 | if (SCM_LIKELY (scm_is_string (str) | |
2660 | && SCM_I_INUMP (idx) | |
2661 | && ((i = SCM_I_INUM (idx)) >= 0) | |
2662 | && i < scm_i_string_length (str))) | |
2663 | RETURN (SCM_MAKE_CHAR (scm_i_string_ref (str, i))); | |
2664 | else | |
2665 | { | |
2666 | SYNC_IP (); | |
2667 | RETURN (scm_string_ref (str, idx)); | |
2668 | } | |
2669 | } | |
2670 | ||
2671 | /* No string-set! instruction, as there is no good fast path there. */ | |
2672 | ||
2673 | /* string-to-number dst:12 src:12 | |
2674 | * | |
2675 | * Parse a string in SRC to a number, and store in DST. | |
2676 | */ | |
286a0fb3 | 2677 | VM_DEFINE_OP (76, string_to_number, "string->number", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2678 | { |
2679 | scm_t_uint16 dst, src; | |
2680 | ||
2681 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
2682 | SYNC_IP (); | |
2683 | LOCAL_SET (dst, | |
2684 | scm_string_to_number (LOCAL_REF (src), | |
2685 | SCM_UNDEFINED /* radix = 10 */)); | |
2686 | NEXT (1); | |
2687 | } | |
2688 | ||
2689 | /* string-to-symbol dst:12 src:12 | |
2690 | * | |
2691 | * Parse a string in SRC to a symbol, and store in DST. | |
2692 | */ | |
286a0fb3 | 2693 | VM_DEFINE_OP (77, string_to_symbol, "string->symbol", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2694 | { |
2695 | scm_t_uint16 dst, src; | |
2696 | ||
2697 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
2698 | SYNC_IP (); | |
2699 | LOCAL_SET (dst, scm_string_to_symbol (LOCAL_REF (src))); | |
2700 | NEXT (1); | |
2701 | } | |
2702 | ||
2703 | /* symbol->keyword dst:12 src:12 | |
2704 | * | |
2705 | * Make a keyword from the symbol in SRC, and store it in DST. | |
2706 | */ | |
286a0fb3 | 2707 | VM_DEFINE_OP (78, symbol_to_keyword, "symbol->keyword", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2708 | { |
2709 | scm_t_uint16 dst, src; | |
2710 | SCM_UNPACK_RTL_12_12 (op, dst, src); | |
2711 | SYNC_IP (); | |
2712 | LOCAL_SET (dst, scm_symbol_to_keyword (LOCAL_REF (src))); | |
2713 | NEXT (1); | |
2714 | } | |
2715 | ||
2716 | \f | |
2717 | ||
2718 | /* | |
2719 | * Pairs | |
2720 | */ | |
2721 | ||
2722 | /* cons dst:8 car:8 cdr:8 | |
2723 | * | |
2724 | * Cons CAR and CDR, and store the result in DST. | |
2725 | */ | |
286a0fb3 | 2726 | VM_DEFINE_OP (79, cons, "cons", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2727 | { |
2728 | ARGS2 (x, y); | |
2729 | RETURN (scm_cons (x, y)); | |
2730 | } | |
2731 | ||
2732 | /* car dst:12 src:12 | |
2733 | * | |
2734 | * Place the car of SRC in DST. | |
2735 | */ | |
286a0fb3 | 2736 | VM_DEFINE_OP (80, car, "car", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2737 | { |
2738 | ARGS1 (x); | |
2739 | VM_VALIDATE_PAIR (x, "car"); | |
2740 | RETURN (SCM_CAR (x)); | |
2741 | } | |
2742 | ||
2743 | /* cdr dst:12 src:12 | |
2744 | * | |
2745 | * Place the cdr of SRC in DST. | |
2746 | */ | |
286a0fb3 | 2747 | VM_DEFINE_OP (81, cdr, "cdr", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2748 | { |
2749 | ARGS1 (x); | |
2750 | VM_VALIDATE_PAIR (x, "cdr"); | |
2751 | RETURN (SCM_CDR (x)); | |
2752 | } | |
2753 | ||
2754 | /* set-car! pair:12 car:12 | |
2755 | * | |
2756 | * Set the car of DST to SRC. | |
2757 | */ | |
286a0fb3 | 2758 | VM_DEFINE_OP (82, set_car, "set-car!", OP1 (U8_U12_U12)) |
510ca126 AW |
2759 | { |
2760 | scm_t_uint16 a, b; | |
2761 | SCM x, y; | |
2762 | SCM_UNPACK_RTL_12_12 (op, a, b); | |
2763 | x = LOCAL_REF (a); | |
2764 | y = LOCAL_REF (b); | |
2765 | VM_VALIDATE_PAIR (x, "set-car!"); | |
2766 | SCM_SETCAR (x, y); | |
2767 | NEXT (1); | |
2768 | } | |
2769 | ||
2770 | /* set-cdr! pair:12 cdr:12 | |
2771 | * | |
2772 | * Set the cdr of DST to SRC. | |
2773 | */ | |
286a0fb3 | 2774 | VM_DEFINE_OP (83, set_cdr, "set-cdr!", OP1 (U8_U12_U12)) |
510ca126 AW |
2775 | { |
2776 | scm_t_uint16 a, b; | |
2777 | SCM x, y; | |
2778 | SCM_UNPACK_RTL_12_12 (op, a, b); | |
2779 | x = LOCAL_REF (a); | |
2780 | y = LOCAL_REF (b); | |
2781 | VM_VALIDATE_PAIR (x, "set-car!"); | |
2782 | SCM_SETCDR (x, y); | |
2783 | NEXT (1); | |
2784 | } | |
2785 | ||
2786 | ||
2787 | \f | |
2788 | ||
2789 | /* | |
2790 | * Numeric operations | |
2791 | */ | |
2792 | ||
2793 | /* add dst:8 a:8 b:8 | |
2794 | * | |
2795 | * Add A to B, and place the result in DST. | |
2796 | */ | |
286a0fb3 | 2797 | VM_DEFINE_OP (84, add, "add", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2798 | { |
2799 | BINARY_INTEGER_OP (+, scm_sum); | |
2800 | } | |
2801 | ||
2802 | /* add1 dst:12 src:12 | |
2803 | * | |
2804 | * Add 1 to the value in SRC, and place the result in DST. | |
2805 | */ | |
286a0fb3 | 2806 | VM_DEFINE_OP (85, add1, "add1", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2807 | { |
2808 | ARGS1 (x); | |
2809 | ||
2810 | /* Check for overflow. */ | |
2811 | if (SCM_LIKELY ((scm_t_intptr) SCM_UNPACK (x) < INUM_MAX)) | |
2812 | { | |
2813 | SCM result; | |
2814 | ||
2815 | /* Add the integers without untagging. */ | |
2816 | result = SCM_PACK ((scm_t_intptr) SCM_UNPACK (x) | |
2817 | + (scm_t_intptr) SCM_UNPACK (SCM_I_MAKINUM (1)) | |
2818 | - scm_tc2_int); | |
2819 | ||
2820 | if (SCM_LIKELY (SCM_I_INUMP (result))) | |
2821 | RETURN (result); | |
2822 | } | |
2823 | ||
2824 | SYNC_IP (); | |
2825 | RETURN (scm_sum (x, SCM_I_MAKINUM (1))); | |
2826 | } | |
2827 | ||
2828 | /* sub dst:8 a:8 b:8 | |
2829 | * | |
2830 | * Subtract B from A, and place the result in DST. | |
2831 | */ | |
286a0fb3 | 2832 | VM_DEFINE_OP (86, sub, "sub", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2833 | { |
2834 | BINARY_INTEGER_OP (-, scm_difference); | |
2835 | } | |
2836 | ||
2837 | /* sub1 dst:12 src:12 | |
2838 | * | |
2839 | * Subtract 1 from SRC, and place the result in DST. | |
2840 | */ | |
286a0fb3 | 2841 | VM_DEFINE_OP (87, sub1, "sub1", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2842 | { |
2843 | ARGS1 (x); | |
2844 | ||
2845 | /* Check for underflow. */ | |
2846 | if (SCM_LIKELY ((scm_t_intptr) SCM_UNPACK (x) > INUM_MIN)) | |
2847 | { | |
2848 | SCM result; | |
2849 | ||
2850 | /* Substract the integers without untagging. */ | |
2851 | result = SCM_PACK ((scm_t_intptr) SCM_UNPACK (x) | |
2852 | - (scm_t_intptr) SCM_UNPACK (SCM_I_MAKINUM (1)) | |
2853 | + scm_tc2_int); | |
2854 | ||
2855 | if (SCM_LIKELY (SCM_I_INUMP (result))) | |
2856 | RETURN (result); | |
2857 | } | |
2858 | ||
2859 | SYNC_IP (); | |
2860 | RETURN (scm_difference (x, SCM_I_MAKINUM (1))); | |
2861 | } | |
2862 | ||
2863 | /* mul dst:8 a:8 b:8 | |
2864 | * | |
2865 | * Multiply A and B, and place the result in DST. | |
2866 | */ | |
286a0fb3 | 2867 | VM_DEFINE_OP (88, mul, "mul", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2868 | { |
2869 | ARGS2 (x, y); | |
2870 | SYNC_IP (); | |
2871 | RETURN (scm_product (x, y)); | |
2872 | } | |
2873 | ||
2874 | /* div dst:8 a:8 b:8 | |
2875 | * | |
2876 | * Divide A by B, and place the result in DST. | |
2877 | */ | |
286a0fb3 | 2878 | VM_DEFINE_OP (89, div, "div", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2879 | { |
2880 | ARGS2 (x, y); | |
2881 | SYNC_IP (); | |
2882 | RETURN (scm_divide (x, y)); | |
2883 | } | |
2884 | ||
2885 | /* quo dst:8 a:8 b:8 | |
2886 | * | |
2887 | * Divide A by B, and place the quotient in DST. | |
2888 | */ | |
286a0fb3 | 2889 | VM_DEFINE_OP (90, quo, "quo", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2890 | { |
2891 | ARGS2 (x, y); | |
2892 | SYNC_IP (); | |
2893 | RETURN (scm_quotient (x, y)); | |
2894 | } | |
2895 | ||
2896 | /* rem dst:8 a:8 b:8 | |
2897 | * | |
2898 | * Divide A by B, and place the remainder in DST. | |
2899 | */ | |
286a0fb3 | 2900 | VM_DEFINE_OP (91, rem, "rem", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2901 | { |
2902 | ARGS2 (x, y); | |
2903 | SYNC_IP (); | |
2904 | RETURN (scm_remainder (x, y)); | |
2905 | } | |
2906 | ||
2907 | /* mod dst:8 a:8 b:8 | |
2908 | * | |
2909 | * Place the modulo of A by B in DST. | |
2910 | */ | |
286a0fb3 | 2911 | VM_DEFINE_OP (92, mod, "mod", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2912 | { |
2913 | ARGS2 (x, y); | |
2914 | SYNC_IP (); | |
2915 | RETURN (scm_modulo (x, y)); | |
2916 | } | |
2917 | ||
2918 | /* ash dst:8 a:8 b:8 | |
2919 | * | |
2920 | * Shift A arithmetically by B bits, and place the result in DST. | |
2921 | */ | |
286a0fb3 | 2922 | VM_DEFINE_OP (93, ash, "ash", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2923 | { |
2924 | ARGS2 (x, y); | |
2925 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) | |
2926 | { | |
2927 | if (SCM_I_INUM (y) < 0) | |
2928 | /* Right shift, will be a fixnum. */ | |
2929 | RETURN (SCM_I_MAKINUM (SCM_I_INUM (x) >> -SCM_I_INUM (y))); | |
2930 | else | |
2931 | /* Left shift. See comments in scm_ash. */ | |
2932 | { | |
2933 | scm_t_signed_bits nn, bits_to_shift; | |
2934 | ||
2935 | nn = SCM_I_INUM (x); | |
2936 | bits_to_shift = SCM_I_INUM (y); | |
2937 | ||
2938 | if (bits_to_shift < SCM_I_FIXNUM_BIT-1 | |
2939 | && ((scm_t_bits) | |
2940 | (SCM_SRS (nn, (SCM_I_FIXNUM_BIT-1 - bits_to_shift)) + 1) | |
2941 | <= 1)) | |
2942 | RETURN (SCM_I_MAKINUM (nn << bits_to_shift)); | |
2943 | /* fall through */ | |
2944 | } | |
2945 | /* fall through */ | |
2946 | } | |
2947 | SYNC_IP (); | |
2948 | RETURN (scm_ash (x, y)); | |
2949 | } | |
2950 | ||
2951 | /* logand dst:8 a:8 b:8 | |
2952 | * | |
2953 | * Place the bitwise AND of A and B into DST. | |
2954 | */ | |
286a0fb3 | 2955 | VM_DEFINE_OP (94, logand, "logand", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2956 | { |
2957 | ARGS2 (x, y); | |
2958 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) | |
2959 | RETURN (SCM_I_MAKINUM (SCM_I_INUM (x) & SCM_I_INUM (y))); | |
2960 | SYNC_IP (); | |
2961 | RETURN (scm_logand (x, y)); | |
2962 | } | |
2963 | ||
2964 | /* logior dst:8 a:8 b:8 | |
2965 | * | |
2966 | * Place the bitwise inclusive OR of A with B in DST. | |
2967 | */ | |
286a0fb3 | 2968 | VM_DEFINE_OP (95, logior, "logior", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2969 | { |
2970 | ARGS2 (x, y); | |
2971 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) | |
2972 | RETURN (SCM_I_MAKINUM (SCM_I_INUM (x) | SCM_I_INUM (y))); | |
2973 | SYNC_IP (); | |
2974 | RETURN (scm_logior (x, y)); | |
2975 | } | |
2976 | ||
2977 | /* logxor dst:8 a:8 b:8 | |
2978 | * | |
2979 | * Place the bitwise exclusive OR of A with B in DST. | |
2980 | */ | |
286a0fb3 | 2981 | VM_DEFINE_OP (96, logxor, "logxor", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
2982 | { |
2983 | ARGS2 (x, y); | |
2984 | if (SCM_I_INUMP (x) && SCM_I_INUMP (y)) | |
2985 | RETURN (SCM_I_MAKINUM (SCM_I_INUM (x) ^ SCM_I_INUM (y))); | |
2986 | SYNC_IP (); | |
2987 | RETURN (scm_logxor (x, y)); | |
2988 | } | |
2989 | ||
2990 | /* vector-length dst:12 src:12 | |
2991 | * | |
2992 | * Store the length of the vector in SRC in DST. | |
2993 | */ | |
286a0fb3 | 2994 | VM_DEFINE_OP (97, vector_length, "vector-length", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
2995 | { |
2996 | ARGS1 (vect); | |
2997 | if (SCM_LIKELY (SCM_I_IS_VECTOR (vect))) | |
2998 | RETURN (SCM_I_MAKINUM (SCM_I_VECTOR_LENGTH (vect))); | |
2999 | else | |
3000 | { | |
3001 | SYNC_IP (); | |
3002 | RETURN (scm_vector_length (vect)); | |
3003 | } | |
3004 | } | |
3005 | ||
3006 | /* vector-ref dst:8 src:8 idx:8 | |
3007 | * | |
3008 | * Fetch the item at position IDX in the vector in SRC, and store it | |
3009 | * in DST. | |
3010 | */ | |
286a0fb3 | 3011 | VM_DEFINE_OP (98, vector_ref, "vector-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
3012 | { |
3013 | scm_t_signed_bits i = 0; | |
3014 | ARGS2 (vect, idx); | |
3015 | if (SCM_LIKELY (SCM_I_IS_NONWEAK_VECTOR (vect) | |
3016 | && SCM_I_INUMP (idx) | |
3017 | && ((i = SCM_I_INUM (idx)) >= 0) | |
3018 | && i < SCM_I_VECTOR_LENGTH (vect))) | |
3019 | RETURN (SCM_I_VECTOR_ELTS (vect)[i]); | |
3020 | else | |
3021 | { | |
3022 | SYNC_IP (); | |
3023 | RETURN (scm_vector_ref (vect, idx)); | |
3024 | } | |
3025 | } | |
3026 | ||
3027 | /* constant-vector-ref dst:8 src:8 idx:8 | |
3028 | * | |
3029 | * Fill DST with the item IDX elements into the vector at SRC. Useful | |
3030 | * for building data types using vectors. | |
3031 | */ | |
286a0fb3 | 3032 | VM_DEFINE_OP (99, constant_vector_ref, "constant-vector-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
3033 | { |
3034 | scm_t_uint8 dst, src, idx; | |
3035 | SCM v; | |
3036 | ||
3037 | SCM_UNPACK_RTL_8_8_8 (op, dst, src, idx); | |
3038 | v = LOCAL_REF (src); | |
3039 | if (SCM_LIKELY (SCM_I_IS_NONWEAK_VECTOR (v) | |
3040 | && idx < SCM_I_VECTOR_LENGTH (v))) | |
3041 | LOCAL_SET (dst, SCM_I_VECTOR_ELTS (LOCAL_REF (src))[idx]); | |
3042 | else | |
3043 | LOCAL_SET (dst, scm_c_vector_ref (v, idx)); | |
3044 | NEXT (1); | |
3045 | } | |
3046 | ||
3047 | /* vector-set! dst:8 idx:8 src:8 | |
3048 | * | |
3049 | * Store SRC into the vector DST at index IDX. | |
3050 | */ | |
286a0fb3 | 3051 | VM_DEFINE_OP (100, vector_set, "vector-set", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3052 | { |
3053 | scm_t_uint8 dst, idx_var, src; | |
3054 | SCM vect, idx, val; | |
3055 | scm_t_signed_bits i = 0; | |
3056 | ||
3057 | SCM_UNPACK_RTL_8_8_8 (op, dst, idx_var, src); | |
3058 | vect = LOCAL_REF (dst); | |
3059 | idx = LOCAL_REF (idx_var); | |
3060 | val = LOCAL_REF (src); | |
3061 | ||
3062 | if (SCM_LIKELY (SCM_I_IS_NONWEAK_VECTOR (vect) | |
3063 | && SCM_I_INUMP (idx) | |
3064 | && ((i = SCM_I_INUM (idx)) >= 0) | |
3065 | && i < SCM_I_VECTOR_LENGTH (vect))) | |
3066 | SCM_I_VECTOR_WELTS (vect)[i] = val; | |
3067 | else | |
3068 | { | |
3069 | SYNC_IP (); | |
3070 | scm_vector_set_x (vect, idx, val); | |
3071 | } | |
3072 | NEXT (1); | |
3073 | } | |
3074 | ||
3075 | ||
3076 | \f | |
3077 | ||
3078 | /* | |
3079 | * Structs and GOOPS | |
3080 | */ | |
3081 | ||
3082 | /* struct-vtable dst:12 src:12 | |
3083 | * | |
3084 | * Store the vtable of SRC into DST. | |
3085 | */ | |
286a0fb3 | 3086 | VM_DEFINE_OP (101, struct_vtable, "struct-vtable", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
3087 | { |
3088 | ARGS1 (obj); | |
3089 | VM_VALIDATE_STRUCT (obj, "struct_vtable"); | |
3090 | RETURN (SCM_STRUCT_VTABLE (obj)); | |
3091 | } | |
3092 | ||
14d10292 | 3093 | /* allocate-struct dst:8 vtable:8 nfields:8 |
510ca126 | 3094 | * |
14d10292 AW |
3095 | * Allocate a new struct with VTABLE, and place it in DST. The struct |
3096 | * will be constructed with space for NFIELDS fields, which should | |
3097 | * correspond to the field count of the VTABLE. | |
510ca126 | 3098 | */ |
14d10292 | 3099 | VM_DEFINE_OP (102, allocate_struct, "allocate-struct", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 | 3100 | { |
14d10292 AW |
3101 | scm_t_uint8 dst, vtable, nfields; |
3102 | SCM ret; | |
510ca126 | 3103 | |
14d10292 | 3104 | SCM_UNPACK_RTL_8_8_8 (op, dst, vtable, nfields); |
510ca126 AW |
3105 | |
3106 | SYNC_IP (); | |
14d10292 | 3107 | ret = scm_allocate_struct (LOCAL_REF (vtable), SCM_I_MAKINUM (nfields)); |
510ca126 | 3108 | LOCAL_SET (dst, ret); |
14d10292 AW |
3109 | |
3110 | NEXT (1); | |
510ca126 | 3111 | } |
510ca126 AW |
3112 | |
3113 | /* struct-ref dst:8 src:8 idx:8 | |
3114 | * | |
3115 | * Fetch the item at slot IDX in the struct in SRC, and store it | |
3116 | * in DST. | |
3117 | */ | |
286a0fb3 | 3118 | VM_DEFINE_OP (103, struct_ref, "struct-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
3119 | { |
3120 | ARGS2 (obj, pos); | |
3121 | ||
3122 | if (SCM_LIKELY (SCM_STRUCTP (obj) | |
3123 | && SCM_STRUCT_VTABLE_FLAG_IS_SET (obj, | |
3124 | SCM_VTABLE_FLAG_SIMPLE) | |
3125 | && SCM_I_INUMP (pos))) | |
3126 | { | |
3127 | SCM vtable; | |
3128 | scm_t_bits index, len; | |
3129 | ||
3130 | /* True, an inum is a signed value, but cast to unsigned it will | |
3131 | certainly be more than the length, so we will fall through if | |
3132 | index is negative. */ | |
3133 | index = SCM_I_INUM (pos); | |
3134 | vtable = SCM_STRUCT_VTABLE (obj); | |
3135 | len = SCM_STRUCT_DATA_REF (vtable, scm_vtable_index_size); | |
3136 | ||
3137 | if (SCM_LIKELY (index < len)) | |
3138 | { | |
3139 | scm_t_bits *data = SCM_STRUCT_DATA (obj); | |
3140 | RETURN (SCM_PACK (data[index])); | |
3141 | } | |
3142 | } | |
3143 | ||
3144 | SYNC_IP (); | |
3145 | RETURN (scm_struct_ref (obj, pos)); | |
3146 | } | |
3147 | ||
3148 | /* struct-set! dst:8 idx:8 src:8 | |
3149 | * | |
3150 | * Store SRC into the struct DST at slot IDX. | |
3151 | */ | |
286a0fb3 | 3152 | VM_DEFINE_OP (104, struct_set, "struct-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3153 | { |
3154 | scm_t_uint8 dst, idx, src; | |
3155 | SCM obj, pos, val; | |
3156 | ||
3157 | SCM_UNPACK_RTL_8_8_8 (op, dst, idx, src); | |
3158 | obj = LOCAL_REF (dst); | |
3159 | pos = LOCAL_REF (idx); | |
3160 | val = LOCAL_REF (src); | |
3161 | ||
3162 | if (SCM_LIKELY (SCM_STRUCTP (obj) | |
3163 | && SCM_STRUCT_VTABLE_FLAG_IS_SET (obj, | |
3164 | SCM_VTABLE_FLAG_SIMPLE) | |
3165 | && SCM_STRUCT_VTABLE_FLAG_IS_SET (obj, | |
3166 | SCM_VTABLE_FLAG_SIMPLE_RW) | |
3167 | && SCM_I_INUMP (pos))) | |
3168 | { | |
3169 | SCM vtable; | |
3170 | scm_t_bits index, len; | |
3171 | ||
3172 | /* See above regarding index being >= 0. */ | |
3173 | index = SCM_I_INUM (pos); | |
3174 | vtable = SCM_STRUCT_VTABLE (obj); | |
3175 | len = SCM_STRUCT_DATA_REF (vtable, scm_vtable_index_size); | |
3176 | if (SCM_LIKELY (index < len)) | |
3177 | { | |
3178 | scm_t_bits *data = SCM_STRUCT_DATA (obj); | |
3179 | data[index] = SCM_UNPACK (val); | |
3180 | NEXT (1); | |
3181 | } | |
3182 | } | |
3183 | ||
3184 | SYNC_IP (); | |
3185 | scm_struct_set_x (obj, pos, val); | |
3186 | NEXT (1); | |
3187 | } | |
3188 | ||
3189 | /* class-of dst:12 type:12 | |
3190 | * | |
3191 | * Store the vtable of SRC into DST. | |
3192 | */ | |
286a0fb3 | 3193 | VM_DEFINE_OP (105, class_of, "class-of", OP1 (U8_U12_U12) | OP_DST) |
510ca126 AW |
3194 | { |
3195 | ARGS1 (obj); | |
3196 | if (SCM_INSTANCEP (obj)) | |
3197 | RETURN (SCM_CLASS_OF (obj)); | |
3198 | SYNC_IP (); | |
3199 | RETURN (scm_class_of (obj)); | |
3200 | } | |
3201 | ||
3202 | /* slot-ref dst:8 src:8 idx:8 | |
3203 | * | |
3204 | * Fetch the item at slot IDX in the struct in SRC, and store it in | |
3205 | * DST. Unlike struct-ref, IDX is an 8-bit immediate value, not an | |
3206 | * index into the stack. | |
3207 | */ | |
286a0fb3 | 3208 | VM_DEFINE_OP (106, slot_ref, "slot-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
3209 | { |
3210 | scm_t_uint8 dst, src, idx; | |
3211 | SCM_UNPACK_RTL_8_8_8 (op, dst, src, idx); | |
3212 | LOCAL_SET (dst, | |
3213 | SCM_PACK (SCM_STRUCT_DATA (LOCAL_REF (src))[idx])); | |
3214 | NEXT (1); | |
3215 | } | |
3216 | ||
3217 | /* slot-set! dst:8 idx:8 src:8 | |
3218 | * | |
3219 | * Store SRC into slot IDX of the struct in DST. Unlike struct-set!, | |
3220 | * IDX is an 8-bit immediate value, not an index into the stack. | |
3221 | */ | |
286a0fb3 | 3222 | VM_DEFINE_OP (107, slot_set, "slot-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3223 | { |
3224 | scm_t_uint8 dst, idx, src; | |
3225 | SCM_UNPACK_RTL_8_8_8 (op, dst, idx, src); | |
3226 | SCM_STRUCT_DATA (LOCAL_REF (dst))[idx] = SCM_UNPACK (LOCAL_REF (src)); | |
3227 | NEXT (1); | |
3228 | } | |
3229 | ||
3230 | ||
3231 | \f | |
3232 | ||
3233 | /* | |
3234 | * Arrays, packed uniform arrays, and bytevectors. | |
3235 | */ | |
3236 | ||
3237 | /* load-typed-array dst:8 type:8 shape:8 offset:32 len:32 | |
3238 | * | |
3239 | * Load the contiguous typed array located at OFFSET 32-bit words away | |
3240 | * from the instruction pointer, and store into DST. LEN is a byte | |
3241 | * length. OFFSET is signed. | |
3242 | */ | |
286a0fb3 | 3243 | VM_DEFINE_OP (108, load_typed_array, "load-typed-array", OP3 (U8_U8_U8_U8, N32, U32) | OP_DST) |
510ca126 AW |
3244 | { |
3245 | scm_t_uint8 dst, type, shape; | |
3246 | scm_t_int32 offset; | |
3247 | scm_t_uint32 len; | |
3248 | ||
3249 | SCM_UNPACK_RTL_8_8_8 (op, dst, type, shape); | |
3250 | offset = ip[1]; | |
3251 | len = ip[2]; | |
3252 | SYNC_IP (); | |
3253 | LOCAL_SET (dst, scm_from_contiguous_typed_array (LOCAL_REF (type), | |
3254 | LOCAL_REF (shape), | |
3255 | ip + offset, len)); | |
3256 | NEXT (3); | |
3257 | } | |
3258 | ||
3259 | /* make-array dst:12 type:12 _:8 fill:12 bounds:12 | |
3260 | * | |
3261 | * Make a new array with TYPE, FILL, and BOUNDS, storing it in DST. | |
3262 | */ | |
286a0fb3 | 3263 | VM_DEFINE_OP (109, make_array, "make-array", OP2 (U8_U12_U12, X8_U12_U12) | OP_DST) |
510ca126 AW |
3264 | { |
3265 | scm_t_uint16 dst, type, fill, bounds; | |
3266 | SCM_UNPACK_RTL_12_12 (op, dst, type); | |
3267 | SCM_UNPACK_RTL_12_12 (ip[1], fill, bounds); | |
3268 | SYNC_IP (); | |
3269 | LOCAL_SET (dst, scm_make_typed_array (LOCAL_REF (type), LOCAL_REF (fill), | |
3270 | LOCAL_REF (bounds))); | |
3271 | NEXT (2); | |
3272 | } | |
3273 | ||
3274 | /* bv-u8-ref dst:8 src:8 idx:8 | |
3275 | * bv-s8-ref dst:8 src:8 idx:8 | |
3276 | * bv-u16-ref dst:8 src:8 idx:8 | |
3277 | * bv-s16-ref dst:8 src:8 idx:8 | |
3278 | * bv-u32-ref dst:8 src:8 idx:8 | |
3279 | * bv-s32-ref dst:8 src:8 idx:8 | |
3280 | * bv-u64-ref dst:8 src:8 idx:8 | |
3281 | * bv-s64-ref dst:8 src:8 idx:8 | |
3282 | * bv-f32-ref dst:8 src:8 idx:8 | |
3283 | * bv-f64-ref dst:8 src:8 idx:8 | |
3284 | * | |
3285 | * Fetch the item at byte offset IDX in the bytevector SRC, and store | |
3286 | * it in DST. All accesses use native endianness. | |
3287 | */ | |
3288 | #define BV_FIXABLE_INT_REF(stem, fn_stem, type, size) \ | |
3289 | do { \ | |
3290 | scm_t_signed_bits i; \ | |
3291 | const scm_t_ ## type *int_ptr; \ | |
3292 | ARGS2 (bv, idx); \ | |
3293 | \ | |
3294 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-ref"); \ | |
3295 | i = SCM_I_INUM (idx); \ | |
3296 | int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
3297 | \ | |
3298 | if (SCM_LIKELY (SCM_I_INUMP (idx) \ | |
3299 | && (i >= 0) \ | |
3300 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
3301 | && (ALIGNED_P (int_ptr, scm_t_ ## type)))) \ | |
3302 | RETURN (SCM_I_MAKINUM (*int_ptr)); \ | |
3303 | else \ | |
3304 | { \ | |
3305 | SYNC_IP (); \ | |
3306 | RETURN (scm_bytevector_ ## fn_stem ## _ref (bv, idx)); \ | |
3307 | } \ | |
3308 | } while (0) | |
3309 | ||
3310 | #define BV_INT_REF(stem, type, size) \ | |
3311 | do { \ | |
3312 | scm_t_signed_bits i; \ | |
3313 | const scm_t_ ## type *int_ptr; \ | |
3314 | ARGS2 (bv, idx); \ | |
3315 | \ | |
3316 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-ref"); \ | |
3317 | i = SCM_I_INUM (idx); \ | |
3318 | int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
3319 | \ | |
3320 | if (SCM_LIKELY (SCM_I_INUMP (idx) \ | |
3321 | && (i >= 0) \ | |
3322 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
3323 | && (ALIGNED_P (int_ptr, scm_t_ ## type)))) \ | |
3324 | { \ | |
3325 | scm_t_ ## type x = *int_ptr; \ | |
3326 | if (SCM_FIXABLE (x)) \ | |
3327 | RETURN (SCM_I_MAKINUM (x)); \ | |
3328 | else \ | |
3329 | { \ | |
3330 | SYNC_IP (); \ | |
3331 | RETURN (scm_from_ ## type (x)); \ | |
3332 | } \ | |
3333 | } \ | |
3334 | else \ | |
3335 | { \ | |
3336 | SYNC_IP (); \ | |
3337 | RETURN (scm_bytevector_ ## stem ## _native_ref (bv, idx)); \ | |
3338 | } \ | |
3339 | } while (0) | |
3340 | ||
3341 | #define BV_FLOAT_REF(stem, fn_stem, type, size) \ | |
3342 | do { \ | |
3343 | scm_t_signed_bits i; \ | |
3344 | const type *float_ptr; \ | |
3345 | ARGS2 (bv, idx); \ | |
3346 | \ | |
3347 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-ref"); \ | |
3348 | i = SCM_I_INUM (idx); \ | |
3349 | float_ptr = (type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
3350 | \ | |
3351 | SYNC_IP (); \ | |
3352 | if (SCM_LIKELY (SCM_I_INUMP (idx) \ | |
3353 | && (i >= 0) \ | |
3354 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
3355 | && (ALIGNED_P (float_ptr, type)))) \ | |
3356 | RETURN (scm_from_double (*float_ptr)); \ | |
3357 | else \ | |
3358 | RETURN (scm_bytevector_ ## fn_stem ## _native_ref (bv, idx)); \ | |
3359 | } while (0) | |
3360 | ||
286a0fb3 | 3361 | VM_DEFINE_OP (110, bv_u8_ref, "bv-u8-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
3362 | BV_FIXABLE_INT_REF (u8, u8, uint8, 1); |
3363 | ||
286a0fb3 | 3364 | VM_DEFINE_OP (111, bv_s8_ref, "bv-s8-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
3365 | BV_FIXABLE_INT_REF (s8, s8, int8, 1); |
3366 | ||
286a0fb3 | 3367 | VM_DEFINE_OP (112, bv_u16_ref, "bv-u16-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
3368 | BV_FIXABLE_INT_REF (u16, u16_native, uint16, 2); |
3369 | ||
286a0fb3 | 3370 | VM_DEFINE_OP (113, bv_s16_ref, "bv-s16-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
3371 | BV_FIXABLE_INT_REF (s16, s16_native, int16, 2); |
3372 | ||
286a0fb3 | 3373 | VM_DEFINE_OP (114, bv_u32_ref, "bv-u32-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
3374 | #if SIZEOF_VOID_P > 4 |
3375 | BV_FIXABLE_INT_REF (u32, u32_native, uint32, 4); | |
3376 | #else | |
3377 | BV_INT_REF (u32, uint32, 4); | |
3378 | #endif | |
3379 | ||
286a0fb3 | 3380 | VM_DEFINE_OP (115, bv_s32_ref, "bv-s32-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
3381 | #if SIZEOF_VOID_P > 4 |
3382 | BV_FIXABLE_INT_REF (s32, s32_native, int32, 4); | |
3383 | #else | |
3384 | BV_INT_REF (s32, int32, 4); | |
3385 | #endif | |
3386 | ||
286a0fb3 | 3387 | VM_DEFINE_OP (116, bv_u64_ref, "bv-u64-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
3388 | BV_INT_REF (u64, uint64, 8); |
3389 | ||
286a0fb3 | 3390 | VM_DEFINE_OP (117, bv_s64_ref, "bv-s64-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
3391 | BV_INT_REF (s64, int64, 8); |
3392 | ||
286a0fb3 | 3393 | VM_DEFINE_OP (118, bv_f32_ref, "bv-f32-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
3394 | BV_FLOAT_REF (f32, ieee_single, float, 4); |
3395 | ||
286a0fb3 | 3396 | VM_DEFINE_OP (119, bv_f64_ref, "bv-f64-ref", OP1 (U8_U8_U8_U8) | OP_DST) |
510ca126 AW |
3397 | BV_FLOAT_REF (f64, ieee_double, double, 8); |
3398 | ||
3399 | /* bv-u8-set! dst:8 idx:8 src:8 | |
3400 | * bv-s8-set! dst:8 idx:8 src:8 | |
3401 | * bv-u16-set! dst:8 idx:8 src:8 | |
3402 | * bv-s16-set! dst:8 idx:8 src:8 | |
3403 | * bv-u32-set! dst:8 idx:8 src:8 | |
3404 | * bv-s32-set! dst:8 idx:8 src:8 | |
3405 | * bv-u64-set! dst:8 idx:8 src:8 | |
3406 | * bv-s64-set! dst:8 idx:8 src:8 | |
3407 | * bv-f32-set! dst:8 idx:8 src:8 | |
3408 | * bv-f64-set! dst:8 idx:8 src:8 | |
3409 | * | |
3410 | * Store SRC into the bytevector DST at byte offset IDX. Multibyte | |
3411 | * values are written using native endianness. | |
3412 | */ | |
3413 | #define BV_FIXABLE_INT_SET(stem, fn_stem, type, min, max, size) \ | |
3414 | do { \ | |
3415 | scm_t_uint8 dst, idx, src; \ | |
3416 | scm_t_signed_bits i, j = 0; \ | |
3417 | SCM bv, scm_idx, val; \ | |
3418 | scm_t_ ## type *int_ptr; \ | |
3419 | \ | |
3420 | SCM_UNPACK_RTL_8_8_8 (op, dst, idx, src); \ | |
3421 | bv = LOCAL_REF (dst); \ | |
3422 | scm_idx = LOCAL_REF (idx); \ | |
3423 | val = LOCAL_REF (src); \ | |
3424 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-set"); \ | |
3425 | i = SCM_I_INUM (scm_idx); \ | |
3426 | int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
3427 | \ | |
3428 | if (SCM_LIKELY (SCM_I_INUMP (scm_idx) \ | |
3429 | && (i >= 0) \ | |
3430 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
3431 | && (ALIGNED_P (int_ptr, scm_t_ ## type)) \ | |
3432 | && (SCM_I_INUMP (val)) \ | |
3433 | && ((j = SCM_I_INUM (val)) >= min) \ | |
3434 | && (j <= max))) \ | |
3435 | *int_ptr = (scm_t_ ## type) j; \ | |
3436 | else \ | |
3437 | { \ | |
3438 | SYNC_IP (); \ | |
3439 | scm_bytevector_ ## fn_stem ## _set_x (bv, scm_idx, val); \ | |
3440 | } \ | |
3441 | NEXT (1); \ | |
3442 | } while (0) | |
3443 | ||
3444 | #define BV_INT_SET(stem, type, size) \ | |
3445 | do { \ | |
3446 | scm_t_uint8 dst, idx, src; \ | |
3447 | scm_t_signed_bits i; \ | |
3448 | SCM bv, scm_idx, val; \ | |
3449 | scm_t_ ## type *int_ptr; \ | |
3450 | \ | |
3451 | SCM_UNPACK_RTL_8_8_8 (op, dst, idx, src); \ | |
3452 | bv = LOCAL_REF (dst); \ | |
3453 | scm_idx = LOCAL_REF (idx); \ | |
3454 | val = LOCAL_REF (src); \ | |
3455 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-set"); \ | |
3456 | i = SCM_I_INUM (scm_idx); \ | |
3457 | int_ptr = (scm_t_ ## type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
3458 | \ | |
3459 | if (SCM_LIKELY (SCM_I_INUMP (scm_idx) \ | |
3460 | && (i >= 0) \ | |
3461 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
3462 | && (ALIGNED_P (int_ptr, scm_t_ ## type)))) \ | |
3463 | *int_ptr = scm_to_ ## type (val); \ | |
3464 | else \ | |
3465 | { \ | |
3466 | SYNC_IP (); \ | |
3467 | scm_bytevector_ ## stem ## _native_set_x (bv, scm_idx, val); \ | |
3468 | } \ | |
3469 | NEXT (1); \ | |
3470 | } while (0) | |
3471 | ||
3472 | #define BV_FLOAT_SET(stem, fn_stem, type, size) \ | |
3473 | do { \ | |
3474 | scm_t_uint8 dst, idx, src; \ | |
3475 | scm_t_signed_bits i; \ | |
3476 | SCM bv, scm_idx, val; \ | |
3477 | type *float_ptr; \ | |
3478 | \ | |
3479 | SCM_UNPACK_RTL_8_8_8 (op, dst, idx, src); \ | |
3480 | bv = LOCAL_REF (dst); \ | |
3481 | scm_idx = LOCAL_REF (idx); \ | |
3482 | val = LOCAL_REF (src); \ | |
3483 | VM_VALIDATE_BYTEVECTOR (bv, "bv-" #stem "-set"); \ | |
3484 | i = SCM_I_INUM (scm_idx); \ | |
3485 | float_ptr = (type *) (SCM_BYTEVECTOR_CONTENTS (bv) + i); \ | |
3486 | \ | |
3487 | if (SCM_LIKELY (SCM_I_INUMP (scm_idx) \ | |
3488 | && (i >= 0) \ | |
3489 | && (i + size <= SCM_BYTEVECTOR_LENGTH (bv)) \ | |
3490 | && (ALIGNED_P (float_ptr, type)))) \ | |
3491 | *float_ptr = scm_to_double (val); \ | |
3492 | else \ | |
3493 | { \ | |
3494 | SYNC_IP (); \ | |
3495 | scm_bytevector_ ## fn_stem ## _native_set_x (bv, scm_idx, val); \ | |
3496 | } \ | |
3497 | NEXT (1); \ | |
3498 | } while (0) | |
3499 | ||
286a0fb3 | 3500 | VM_DEFINE_OP (120, bv_u8_set, "bv-u8-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3501 | BV_FIXABLE_INT_SET (u8, u8, uint8, 0, SCM_T_UINT8_MAX, 1); |
3502 | ||
286a0fb3 | 3503 | VM_DEFINE_OP (121, bv_s8_set, "bv-s8-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3504 | BV_FIXABLE_INT_SET (s8, s8, int8, SCM_T_INT8_MIN, SCM_T_INT8_MAX, 1); |
3505 | ||
286a0fb3 | 3506 | VM_DEFINE_OP (122, bv_u16_set, "bv-u16-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3507 | BV_FIXABLE_INT_SET (u16, u16_native, uint16, 0, SCM_T_UINT16_MAX, 2); |
3508 | ||
286a0fb3 | 3509 | VM_DEFINE_OP (123, bv_s16_set, "bv-s16-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3510 | BV_FIXABLE_INT_SET (s16, s16_native, int16, SCM_T_INT16_MIN, SCM_T_INT16_MAX, 2); |
3511 | ||
286a0fb3 | 3512 | VM_DEFINE_OP (124, bv_u32_set, "bv-u32-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3513 | #if SIZEOF_VOID_P > 4 |
3514 | BV_FIXABLE_INT_SET (u32, u32_native, uint32, 0, SCM_T_UINT32_MAX, 4); | |
3515 | #else | |
3516 | BV_INT_SET (u32, uint32, 4); | |
3517 | #endif | |
3518 | ||
286a0fb3 | 3519 | VM_DEFINE_OP (125, bv_s32_set, "bv-s32-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3520 | #if SIZEOF_VOID_P > 4 |
3521 | BV_FIXABLE_INT_SET (s32, s32_native, int32, SCM_T_INT32_MIN, SCM_T_INT32_MAX, 4); | |
3522 | #else | |
3523 | BV_INT_SET (s32, int32, 4); | |
3524 | #endif | |
3525 | ||
286a0fb3 | 3526 | VM_DEFINE_OP (126, bv_u64_set, "bv-u64-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3527 | BV_INT_SET (u64, uint64, 8); |
3528 | ||
286a0fb3 | 3529 | VM_DEFINE_OP (127, bv_s64_set, "bv-s64-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3530 | BV_INT_SET (s64, int64, 8); |
3531 | ||
286a0fb3 | 3532 | VM_DEFINE_OP (128, bv_f32_set, "bv-f32-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3533 | BV_FLOAT_SET (f32, ieee_single, float, 4); |
3534 | ||
286a0fb3 | 3535 | VM_DEFINE_OP (129, bv_f64_set, "bv-f64-set!", OP1 (U8_U8_U8_U8)) |
510ca126 AW |
3536 | BV_FLOAT_SET (f64, ieee_double, double, 8); |
3537 | ||
3538 | END_DISPATCH_SWITCH; | |
3539 | ||
3540 | vm_error_bad_instruction: | |
3541 | vm_error_bad_instruction (op); | |
3542 | ||
3543 | abort (); /* never reached */ | |
3544 | } | |
3545 | ||
3546 | ||
3547 | #undef ABORT_CONTINUATION_HOOK | |
3548 | #undef ALIGNED_P | |
3549 | #undef APPLY_HOOK | |
3550 | #undef ARGS1 | |
3551 | #undef ARGS2 | |
3552 | #undef BEGIN_DISPATCH_SWITCH | |
3553 | #undef BINARY_INTEGER_OP | |
3554 | #undef BR_ARITHMETIC | |
3555 | #undef BR_BINARY | |
3556 | #undef BR_NARGS | |
3557 | #undef BR_UNARY | |
3558 | #undef BV_FIXABLE_INT_REF | |
3559 | #undef BV_FIXABLE_INT_SET | |
3560 | #undef BV_FLOAT_REF | |
3561 | #undef BV_FLOAT_SET | |
3562 | #undef BV_INT_REF | |
3563 | #undef BV_INT_SET | |
3564 | #undef CACHE_REGISTER | |
3565 | #undef CHECK_OVERFLOW | |
3566 | #undef END_DISPATCH_SWITCH | |
3567 | #undef FREE_VARIABLE_REF | |
3568 | #undef INIT | |
3569 | #undef INUM_MAX | |
3570 | #undef INUM_MIN | |
3571 | #undef LOCAL_REF | |
3572 | #undef LOCAL_SET | |
3573 | #undef NEXT | |
3574 | #undef NEXT_HOOK | |
3575 | #undef NEXT_JUMP | |
3576 | #undef POP_CONTINUATION_HOOK | |
3577 | #undef PUSH_CONTINUATION_HOOK | |
3578 | #undef RESTORE_CONTINUATION_HOOK | |
3579 | #undef RETURN | |
3580 | #undef RETURN_ONE_VALUE | |
3581 | #undef RETURN_VALUE_LIST | |
3582 | #undef RUN_HOOK | |
3583 | #undef RUN_HOOK0 | |
3584 | #undef SYNC_ALL | |
3585 | #undef SYNC_BEFORE_GC | |
3586 | #undef SYNC_IP | |
3587 | #undef SYNC_REGISTER | |
3588 | #undef VARIABLE_BOUNDP | |
3589 | #undef VARIABLE_REF | |
3590 | #undef VARIABLE_SET | |
3591 | #undef VM_CHECK_FREE_VARIABLE | |
3592 | #undef VM_CHECK_OBJECT | |
3593 | #undef VM_CHECK_UNDERFLOW | |
3594 | #undef VM_DEFINE_OP | |
3595 | #undef VM_INSTRUCTION_TO_LABEL | |
3596 | #undef VM_USE_HOOKS | |
3597 | #undef VM_VALIDATE_BYTEVECTOR | |
3598 | #undef VM_VALIDATE_PAIR | |
3599 | #undef VM_VALIDATE_STRUCT | |
3600 | ||
3601 | /* | |
3602 | (defun renumber-ops () | |
3603 | "start from top of buffer and renumber 'VM_DEFINE_FOO (\n' sequences" | |
3604 | (interactive "") | |
3605 | (save-excursion | |
3606 | (let ((counter -1)) (goto-char (point-min)) | |
3607 | (while (re-search-forward "^ *VM_DEFINE_[^ ]+ (\\([^,]+\\)," (point-max) t) | |
3608 | (replace-match | |
3609 | (number-to-string (setq counter (1+ counter))) | |
3610 | t t nil 1))))) | |
3611 | (renumber-ops) | |
3612 | */ | |
17e90c5e KN |
3613 | /* |
3614 | Local Variables: | |
3615 | c-file-style: "gnu" | |
3616 | End: | |
3617 | */ |