Commit | Line | Data |
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20d47c39 | 1 | /* Copyright (C) 2001, 2009 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 | |
13c47753 AW |
19 | #if HAVE_CONFIG_H |
20 | # include <config.h> | |
21 | #endif | |
22 | ||
da8b4747 | 23 | #include <stdlib.h> |
6d14383e | 24 | #include <alloca.h> |
17e90c5e | 25 | #include <string.h> |
e3eb628d LC |
26 | #include <assert.h> |
27 | ||
1c44468d | 28 | #include "libguile/bdw-gc.h" |
e3eb628d LC |
29 | #include <gc/gc_mark.h> |
30 | ||
560b9c25 | 31 | #include "_scm.h" |
83495480 | 32 | #include "vm-bootstrap.h" |
ac99cb0c | 33 | #include "frames.h" |
17e90c5e | 34 | #include "instructions.h" |
8f5cfc81 | 35 | #include "objcodes.h" |
ac99cb0c | 36 | #include "programs.h" |
fb10a008 | 37 | #include "lang.h" /* NULL_OR_NIL_P */ |
a98cef7e KN |
38 | #include "vm.h" |
39 | ||
a98cef7e KN |
40 | /* I sometimes use this for debugging. */ |
41 | #define vm_puts(OBJ) \ | |
42 | { \ | |
22bcbe8c AW |
43 | scm_display (OBJ, scm_current_error_port ()); \ |
44 | scm_newline (scm_current_error_port ()); \ | |
a98cef7e KN |
45 | } |
46 | ||
11ea1aba AW |
47 | /* The VM has a number of internal assertions that shouldn't normally be |
48 | necessary, but might be if you think you found a bug in the VM. */ | |
49 | #define VM_ENABLE_ASSERTIONS | |
50 | ||
51 | /* We can add a mode that ensures that all stack items above the stack pointer | |
52 | are NULL. This is useful for checking the internal consistency of the VM's | |
53 | assumptions and its operators, but isn't necessary for normal operation. It | |
616167fc | 54 | will ensure that assertions are enabled. Slows down the VM by about 30%. */ |
747a1635 | 55 | /* NB! If you enable this, search for NULLING in throw.c */ |
616167fc | 56 | /* #define VM_ENABLE_STACK_NULLING */ |
11ea1aba | 57 | |
53e28ed9 AW |
58 | /* #define VM_ENABLE_PARANOID_ASSERTIONS */ |
59 | ||
11ea1aba AW |
60 | #if defined (VM_ENABLE_STACK_NULLING) && !defined (VM_ENABLE_ASSERTIONS) |
61 | #define VM_ENABLE_ASSERTIONS | |
62 | #endif | |
63 | ||
e3eb628d LC |
64 | /* When defined, arrange so that the GC doesn't scan the VM stack beyond its |
65 | current SP. This should help avoid excess data retention. See | |
66 | http://thread.gmane.org/gmane.comp.programming.garbage-collection.boehmgc/3001 | |
67 | for a discussion. */ | |
68 | #define VM_ENABLE_PRECISE_STACK_GC_SCAN | |
69 | ||
70 | ||
a98cef7e | 71 | \f |
a98cef7e KN |
72 | /* |
73 | * VM Continuation | |
74 | */ | |
75 | ||
f9e8c09d | 76 | scm_t_bits scm_tc16_vm_cont; |
17e90c5e | 77 | |
a98cef7e | 78 | static SCM |
3d5ee0cd | 79 | capture_vm_cont (struct scm_vm *vp) |
a98cef7e | 80 | { |
bfffd258 AW |
81 | struct scm_vm_cont *p = scm_gc_malloc (sizeof (*p), "capture_vm_cont"); |
82 | p->stack_size = vp->sp - vp->stack_base + 1; | |
d8eeb67c LC |
83 | p->stack_base = scm_gc_malloc (p->stack_size * sizeof (SCM), |
84 | "capture_vm_cont"); | |
11ea1aba | 85 | #ifdef VM_ENABLE_STACK_NULLING |
66db076a AW |
86 | if (vp->sp >= vp->stack_base) |
87 | if (!vp->sp[0] || vp->sp[1]) | |
88 | abort (); | |
11ea1aba AW |
89 | memset (p->stack_base, 0, p->stack_size * sizeof (SCM)); |
90 | #endif | |
3d5ee0cd | 91 | p->ip = vp->ip; |
7aa6f86b AW |
92 | p->sp = vp->sp; |
93 | p->fp = vp->fp; | |
bfffd258 | 94 | memcpy (p->stack_base, vp->stack_base, p->stack_size * sizeof (SCM)); |
11ea1aba | 95 | p->reloc = p->stack_base - vp->stack_base; |
17e90c5e | 96 | SCM_RETURN_NEWSMOB (scm_tc16_vm_cont, p); |
a98cef7e KN |
97 | } |
98 | ||
99 | static void | |
3d5ee0cd | 100 | reinstate_vm_cont (struct scm_vm *vp, SCM cont) |
a98cef7e | 101 | { |
bfffd258 | 102 | struct scm_vm_cont *p = SCM_VM_CONT_DATA (cont); |
3d5ee0cd | 103 | if (vp->stack_size < p->stack_size) |
a98cef7e | 104 | { |
17e90c5e | 105 | /* puts ("FIXME: Need to expand"); */ |
a98cef7e KN |
106 | abort (); |
107 | } | |
11ea1aba AW |
108 | #ifdef VM_ENABLE_STACK_NULLING |
109 | { | |
7aa6f86b | 110 | scm_t_ptrdiff nzero = (vp->sp - p->sp); |
11ea1aba | 111 | if (nzero > 0) |
66db076a AW |
112 | memset (vp->stack_base + p->stack_size, 0, nzero * sizeof (SCM)); |
113 | /* actually nzero should always be negative, because vm_reset_stack will | |
114 | unwind the stack to some point *below* this continuation */ | |
11ea1aba AW |
115 | } |
116 | #endif | |
3d5ee0cd | 117 | vp->ip = p->ip; |
7aa6f86b AW |
118 | vp->sp = p->sp; |
119 | vp->fp = p->fp; | |
bfffd258 AW |
120 | memcpy (vp->stack_base, p->stack_base, p->stack_size * sizeof (SCM)); |
121 | } | |
122 | ||
123 | /* In theory, a number of vm instances can be active in the call trace, and we | |
124 | only want to reify the continuations of those in the current continuation | |
125 | root. I don't see a nice way to do this -- ideally it would involve dynwinds, | |
126 | and previous values of the *the-vm* fluid within the current continuation | |
127 | root. But we don't have access to continuation roots in the dynwind stack. | |
128 | So, just punt for now -- take the current value of *the-vm*. | |
129 | ||
130 | While I'm on the topic, ideally we could avoid copying the C stack if the | |
131 | continuation root is inside VM code, and call/cc was invoked within that same | |
132 | call to vm_run; but that's currently not implemented. | |
133 | */ | |
134 | SCM | |
135 | scm_vm_capture_continuations (void) | |
136 | { | |
137 | SCM vm = scm_the_vm (); | |
138 | return scm_acons (vm, capture_vm_cont (SCM_VM_DATA (vm)), SCM_EOL); | |
139 | } | |
140 | ||
141 | void | |
142 | scm_vm_reinstate_continuations (SCM conts) | |
143 | { | |
144 | for (; conts != SCM_EOL; conts = SCM_CDR (conts)) | |
145 | reinstate_vm_cont (SCM_VM_DATA (SCM_CAAR (conts)), SCM_CDAR (conts)); | |
a98cef7e KN |
146 | } |
147 | ||
b1b942b7 AW |
148 | static void enfalsen_frame (void *p) |
149 | { | |
150 | struct scm_vm *vp = p; | |
151 | vp->trace_frame = SCM_BOOL_F; | |
152 | } | |
153 | ||
154 | static void | |
6d14383e | 155 | vm_dispatch_hook (struct scm_vm *vp, SCM hook, SCM hook_args) |
b1b942b7 | 156 | { |
9bd48cb1 | 157 | if (!scm_is_false (vp->trace_frame)) |
b1b942b7 | 158 | return; |
9bd48cb1 | 159 | |
b1b942b7 | 160 | scm_dynwind_begin (0); |
6f6f0dac | 161 | /* FIXME, stack holder should be the vm */ |
6d14383e | 162 | vp->trace_frame = scm_c_make_vm_frame (SCM_BOOL_F, vp->fp, vp->sp, vp->ip, 0); |
b1b942b7 AW |
163 | scm_dynwind_unwind_handler (enfalsen_frame, vp, SCM_F_WIND_EXPLICITLY); |
164 | ||
165 | scm_c_run_hook (hook, hook_args); | |
166 | ||
167 | scm_dynwind_end (); | |
168 | } | |
169 | ||
17e90c5e KN |
170 | \f |
171 | /* | |
172 | * VM Internal functions | |
173 | */ | |
174 | ||
90b0be20 AW |
175 | static SCM sym_vm_run; |
176 | static SCM sym_vm_error; | |
177 | static SCM sym_debug; | |
17e90c5e | 178 | |
2fda0242 | 179 | static SCM |
d2d7acd5 | 180 | really_make_boot_program (long nargs) |
2fda0242 | 181 | { |
5bd047ce | 182 | SCM u8vec; |
97fcf583 AW |
183 | scm_t_uint8 text[] = { scm_op_mv_call, 0, 0, 0, 1, |
184 | scm_op_make_int8_1, scm_op_halt }; | |
28b119ee | 185 | struct scm_objcode *bp; |
3b9e095b | 186 | SCM ret; |
5bd047ce | 187 | |
53e28ed9 | 188 | if (SCM_UNLIKELY (nargs > 255 || nargs < 0)) |
2fda0242 | 189 | abort (); |
28b119ee AW |
190 | text[1] = (scm_t_uint8)nargs; |
191 | ||
d7e7a02a | 192 | bp = scm_malloc (sizeof (struct scm_objcode) + sizeof (text)); |
28b119ee | 193 | memcpy (bp->base, text, sizeof (text)); |
28b119ee AW |
194 | bp->len = sizeof(text); |
195 | bp->metalen = 0; | |
28b119ee AW |
196 | |
197 | u8vec = scm_take_u8vector ((scm_t_uint8*)bp, | |
198 | sizeof (struct scm_objcode) + sizeof (text)); | |
5bd047ce | 199 | ret = scm_make_program (scm_bytecode_to_objcode (u8vec), |
20d47c39 | 200 | SCM_BOOL_F, SCM_BOOL_F); |
ba20f78a | 201 | SCM_SET_CELL_WORD_0 (ret, SCM_CELL_WORD_0 (ret) | SCM_F_PROGRAM_IS_BOOT); |
5bd047ce | 202 | |
3b9e095b | 203 | return ret; |
2fda0242 | 204 | } |
d2d7acd5 AW |
205 | #define NUM_BOOT_PROGS 8 |
206 | static SCM | |
207 | vm_make_boot_program (long nargs) | |
208 | { | |
209 | static SCM programs[NUM_BOOT_PROGS] = { 0, }; | |
210 | ||
211 | if (SCM_UNLIKELY (!programs[0])) | |
212 | { | |
213 | int i; | |
214 | for (i = 0; i < NUM_BOOT_PROGS; i++) | |
215 | programs[i] = scm_permanent_object (really_make_boot_program (i)); | |
216 | } | |
217 | ||
218 | if (SCM_LIKELY (nargs < NUM_BOOT_PROGS)) | |
219 | return programs[nargs]; | |
220 | else | |
221 | return really_make_boot_program (nargs); | |
222 | } | |
2fda0242 | 223 | |
a98cef7e KN |
224 | \f |
225 | /* | |
226 | * VM | |
227 | */ | |
228 | ||
b7393ea1 AW |
229 | static SCM |
230 | resolve_variable (SCM what, SCM program_module) | |
231 | { | |
9bd48cb1 | 232 | if (SCM_LIKELY (scm_is_symbol (what))) |
b7393ea1 AW |
233 | { |
234 | if (SCM_LIKELY (scm_module_system_booted_p | |
235 | && scm_is_true (program_module))) | |
236 | /* might longjmp */ | |
237 | return scm_module_lookup (program_module, what); | |
238 | else | |
239 | { | |
240 | SCM v = scm_sym2var (what, SCM_BOOL_F, SCM_BOOL_F); | |
241 | if (scm_is_false (v)) | |
242 | scm_misc_error (NULL, "unbound variable: ~S", scm_list_1 (what)); | |
243 | else | |
244 | return v; | |
245 | } | |
246 | } | |
247 | else | |
248 | { | |
249 | SCM mod; | |
250 | /* compilation of @ or @@ | |
251 | `what' is a three-element list: (MODNAME SYM INTERFACE?) | |
252 | INTERFACE? is #t if we compiled @ or #f if we compiled @@ | |
253 | */ | |
254 | mod = scm_resolve_module (SCM_CAR (what)); | |
255 | if (scm_is_true (SCM_CADDR (what))) | |
256 | mod = scm_module_public_interface (mod); | |
5c8cefe5 | 257 | if (scm_is_false (mod)) |
b7393ea1 AW |
258 | scm_misc_error (NULL, "no such module: ~S", |
259 | scm_list_1 (SCM_CAR (what))); | |
260 | /* might longjmp */ | |
261 | return scm_module_lookup (mod, SCM_CADR (what)); | |
262 | } | |
263 | } | |
264 | ||
265 | ||
51e9ba2f | 266 | #define VM_DEFAULT_STACK_SIZE (64 * 1024) |
17e90c5e | 267 | |
17e90c5e | 268 | #define VM_NAME vm_regular_engine |
6d14383e AW |
269 | #define FUNC_NAME "vm-regular-engine" |
270 | #define VM_ENGINE SCM_VM_REGULAR_ENGINE | |
83495480 | 271 | #include "vm-engine.c" |
17e90c5e | 272 | #undef VM_NAME |
6d14383e | 273 | #undef FUNC_NAME |
17e90c5e | 274 | #undef VM_ENGINE |
17e90c5e KN |
275 | |
276 | #define VM_NAME vm_debug_engine | |
6d14383e AW |
277 | #define FUNC_NAME "vm-debug-engine" |
278 | #define VM_ENGINE SCM_VM_DEBUG_ENGINE | |
83495480 | 279 | #include "vm-engine.c" |
17e90c5e | 280 | #undef VM_NAME |
6d14383e | 281 | #undef FUNC_NAME |
17e90c5e KN |
282 | #undef VM_ENGINE |
283 | ||
6d14383e AW |
284 | static const scm_t_vm_engine vm_engines[] = |
285 | { vm_regular_engine, vm_debug_engine }; | |
286 | ||
f9e8c09d | 287 | scm_t_bits scm_tc16_vm; |
a98cef7e | 288 | |
e3eb628d LC |
289 | #ifdef VM_ENABLE_PRECISE_STACK_GC_SCAN |
290 | ||
291 | /* The GC "kind" for the VM stack. */ | |
292 | static int vm_stack_gc_kind; | |
293 | ||
294 | #endif | |
295 | ||
a98cef7e | 296 | static SCM |
17e90c5e KN |
297 | make_vm (void) |
298 | #define FUNC_NAME "make_vm" | |
a98cef7e | 299 | { |
17e90c5e | 300 | int i; |
7f991c7d | 301 | struct scm_vm *vp; |
747a1635 AW |
302 | |
303 | if (!scm_tc16_vm) | |
304 | return SCM_BOOL_F; /* not booted yet */ | |
305 | ||
7f991c7d | 306 | vp = scm_gc_malloc (sizeof (struct scm_vm), "vm"); |
d8eeb67c | 307 | |
3d5ee0cd | 308 | vp->stack_size = VM_DEFAULT_STACK_SIZE; |
e3eb628d LC |
309 | |
310 | #ifdef VM_ENABLE_PRECISE_STACK_GC_SCAN | |
311 | vp->stack_base = GC_generic_malloc (vp->stack_size * sizeof (SCM), | |
312 | vm_stack_gc_kind); | |
313 | ||
314 | /* Keep a pointer to VP so that `vm_stack_mark ()' can know what the stack | |
315 | top is. */ | |
316 | *vp->stack_base = PTR2SCM (vp); | |
317 | vp->stack_base++; | |
318 | vp->stack_size--; | |
319 | #else | |
d8eeb67c LC |
320 | vp->stack_base = scm_gc_malloc (vp->stack_size * sizeof (SCM), |
321 | "stack-base"); | |
e3eb628d LC |
322 | #endif |
323 | ||
2bbe1533 AW |
324 | #ifdef VM_ENABLE_STACK_NULLING |
325 | memset (vp->stack_base, 0, vp->stack_size * sizeof (SCM)); | |
326 | #endif | |
75d315e1 | 327 | vp->stack_limit = vp->stack_base + vp->stack_size; |
3616e9e9 KN |
328 | vp->ip = NULL; |
329 | vp->sp = vp->stack_base - 1; | |
330 | vp->fp = NULL; | |
6d14383e | 331 | vp->engine = SCM_VM_DEBUG_ENGINE; |
3d5ee0cd KN |
332 | vp->time = 0; |
333 | vp->clock = 0; | |
334 | vp->options = SCM_EOL; | |
17e90c5e | 335 | for (i = 0; i < SCM_VM_NUM_HOOKS; i++) |
3d5ee0cd | 336 | vp->hooks[i] = SCM_BOOL_F; |
b1b942b7 | 337 | vp->trace_frame = SCM_BOOL_F; |
3d5ee0cd | 338 | SCM_RETURN_NEWSMOB (scm_tc16_vm, vp); |
a98cef7e | 339 | } |
17e90c5e | 340 | #undef FUNC_NAME |
a98cef7e | 341 | |
e3eb628d LC |
342 | #ifdef VM_ENABLE_PRECISE_STACK_GC_SCAN |
343 | ||
344 | /* Mark the VM stack region between its base and its current top. */ | |
345 | static struct GC_ms_entry * | |
346 | vm_stack_mark (GC_word *addr, struct GC_ms_entry *mark_stack_ptr, | |
347 | struct GC_ms_entry *mark_stack_limit, GC_word env) | |
348 | { | |
349 | GC_word *word; | |
350 | const struct scm_vm *vm; | |
351 | ||
352 | /* The first word of the VM stack should contain a pointer to the | |
353 | corresponding VM. */ | |
354 | vm = * ((struct scm_vm **) addr); | |
355 | ||
8071c490 LC |
356 | if (vm == NULL |
357 | || (SCM *) addr != vm->stack_base - 1 | |
78747ac6 | 358 | || vm->stack_limit - vm->stack_base != vm->stack_size) |
e3eb628d LC |
359 | /* ADDR must be a pointer to a free-list element, which we must ignore |
360 | (see warning in <gc/gc_mark.h>). */ | |
361 | return mark_stack_ptr; | |
362 | ||
e3eb628d LC |
363 | for (word = (GC_word *) vm->stack_base; word <= (GC_word *) vm->sp; word++) |
364 | mark_stack_ptr = GC_MARK_AND_PUSH ((* (GC_word **) word), | |
365 | mark_stack_ptr, mark_stack_limit, | |
366 | NULL); | |
367 | ||
368 | return mark_stack_ptr; | |
369 | } | |
370 | ||
371 | #endif /* VM_ENABLE_PRECISE_STACK_GC_SCAN */ | |
372 | ||
373 | ||
6d14383e | 374 | SCM |
4abef68f | 375 | scm_c_vm_run (SCM vm, SCM program, SCM *argv, int nargs) |
6d14383e | 376 | { |
4abef68f | 377 | struct scm_vm *vp = SCM_VM_DATA (vm); |
6d14383e AW |
378 | return vm_engines[vp->engine](vp, program, argv, nargs); |
379 | } | |
380 | ||
17e90c5e KN |
381 | SCM |
382 | scm_vm_apply (SCM vm, SCM program, SCM args) | |
383 | #define FUNC_NAME "scm_vm_apply" | |
a98cef7e | 384 | { |
6d14383e AW |
385 | SCM *argv; |
386 | int i, nargs; | |
387 | ||
388 | SCM_VALIDATE_VM (1, vm); | |
389 | SCM_VALIDATE_PROGRAM (2, program); | |
390 | ||
391 | nargs = scm_ilength (args); | |
392 | if (SCM_UNLIKELY (nargs < 0)) | |
393 | scm_wrong_type_arg_msg (FUNC_NAME, 3, args, "list"); | |
394 | ||
395 | argv = alloca(nargs * sizeof(SCM)); | |
396 | for (i = 0; i < nargs; i++) | |
397 | { | |
398 | argv[i] = SCM_CAR (args); | |
399 | args = SCM_CDR (args); | |
400 | } | |
401 | ||
4abef68f | 402 | return scm_c_vm_run (vm, program, argv, nargs); |
a98cef7e | 403 | } |
17e90c5e | 404 | #undef FUNC_NAME |
a98cef7e KN |
405 | |
406 | /* Scheme interface */ | |
407 | ||
408 | SCM_DEFINE (scm_vm_version, "vm-version", 0, 0, 0, | |
17e90c5e KN |
409 | (void), |
410 | "") | |
a98cef7e KN |
411 | #define FUNC_NAME s_scm_vm_version |
412 | { | |
d3518113 | 413 | return scm_from_locale_string (PACKAGE_VERSION); |
a98cef7e KN |
414 | } |
415 | #undef FUNC_NAME | |
416 | ||
499a4c07 | 417 | SCM_DEFINE (scm_the_vm, "the-vm", 0, 0, 0, |
fcd4901b | 418 | (void), |
499a4c07 KN |
419 | "") |
420 | #define FUNC_NAME s_scm_the_vm | |
421 | { | |
2bbe1533 | 422 | scm_i_thread *t = SCM_I_CURRENT_THREAD; |
f63ea2ce | 423 | |
2bbe1533 AW |
424 | if (SCM_UNLIKELY (SCM_FALSEP ((t->vm)))) |
425 | t->vm = make_vm (); | |
f63ea2ce | 426 | |
2bbe1533 | 427 | return t->vm; |
499a4c07 KN |
428 | } |
429 | #undef FUNC_NAME | |
430 | ||
431 | ||
a98cef7e KN |
432 | SCM_DEFINE (scm_vm_p, "vm?", 1, 0, 0, |
433 | (SCM obj), | |
17e90c5e | 434 | "") |
a98cef7e KN |
435 | #define FUNC_NAME s_scm_vm_p |
436 | { | |
9bd48cb1 | 437 | return scm_from_bool (SCM_VM_P (obj)); |
a98cef7e KN |
438 | } |
439 | #undef FUNC_NAME | |
440 | ||
441 | SCM_DEFINE (scm_make_vm, "make-vm", 0, 0, 0, | |
17e90c5e KN |
442 | (void), |
443 | "") | |
444 | #define FUNC_NAME s_scm_make_vm, | |
a98cef7e | 445 | { |
17e90c5e | 446 | return make_vm (); |
a98cef7e KN |
447 | } |
448 | #undef FUNC_NAME | |
449 | ||
17e90c5e | 450 | SCM_DEFINE (scm_vm_ip, "vm:ip", 1, 0, 0, |
a98cef7e | 451 | (SCM vm), |
17e90c5e KN |
452 | "") |
453 | #define FUNC_NAME s_scm_vm_ip | |
a98cef7e KN |
454 | { |
455 | SCM_VALIDATE_VM (1, vm); | |
f41cb00c | 456 | return scm_from_ulong ((unsigned long) SCM_VM_DATA (vm)->ip); |
a98cef7e KN |
457 | } |
458 | #undef FUNC_NAME | |
459 | ||
460 | SCM_DEFINE (scm_vm_sp, "vm:sp", 1, 0, 0, | |
461 | (SCM vm), | |
17e90c5e | 462 | "") |
a98cef7e KN |
463 | #define FUNC_NAME s_scm_vm_sp |
464 | { | |
465 | SCM_VALIDATE_VM (1, vm); | |
f41cb00c | 466 | return scm_from_ulong ((unsigned long) SCM_VM_DATA (vm)->sp); |
a98cef7e KN |
467 | } |
468 | #undef FUNC_NAME | |
469 | ||
470 | SCM_DEFINE (scm_vm_fp, "vm:fp", 1, 0, 0, | |
471 | (SCM vm), | |
17e90c5e | 472 | "") |
a98cef7e KN |
473 | #define FUNC_NAME s_scm_vm_fp |
474 | { | |
475 | SCM_VALIDATE_VM (1, vm); | |
f41cb00c | 476 | return scm_from_ulong ((unsigned long) SCM_VM_DATA (vm)->fp); |
a98cef7e KN |
477 | } |
478 | #undef FUNC_NAME | |
479 | ||
17e90c5e KN |
480 | #define VM_DEFINE_HOOK(n) \ |
481 | { \ | |
3d5ee0cd | 482 | struct scm_vm *vp; \ |
17e90c5e | 483 | SCM_VALIDATE_VM (1, vm); \ |
3d5ee0cd KN |
484 | vp = SCM_VM_DATA (vm); \ |
485 | if (SCM_FALSEP (vp->hooks[n])) \ | |
238e7a11 | 486 | vp->hooks[n] = scm_make_hook (SCM_I_MAKINUM (1)); \ |
3d5ee0cd | 487 | return vp->hooks[n]; \ |
17e90c5e KN |
488 | } |
489 | ||
490 | SCM_DEFINE (scm_vm_boot_hook, "vm-boot-hook", 1, 0, 0, | |
a98cef7e | 491 | (SCM vm), |
17e90c5e KN |
492 | "") |
493 | #define FUNC_NAME s_scm_vm_boot_hook | |
a98cef7e | 494 | { |
17e90c5e | 495 | VM_DEFINE_HOOK (SCM_VM_BOOT_HOOK); |
a98cef7e KN |
496 | } |
497 | #undef FUNC_NAME | |
498 | ||
17e90c5e KN |
499 | SCM_DEFINE (scm_vm_halt_hook, "vm-halt-hook", 1, 0, 0, |
500 | (SCM vm), | |
501 | "") | |
502 | #define FUNC_NAME s_scm_vm_halt_hook | |
a98cef7e | 503 | { |
17e90c5e | 504 | VM_DEFINE_HOOK (SCM_VM_HALT_HOOK); |
a98cef7e KN |
505 | } |
506 | #undef FUNC_NAME | |
507 | ||
17e90c5e | 508 | SCM_DEFINE (scm_vm_next_hook, "vm-next-hook", 1, 0, 0, |
a98cef7e | 509 | (SCM vm), |
17e90c5e KN |
510 | "") |
511 | #define FUNC_NAME s_scm_vm_next_hook | |
a98cef7e | 512 | { |
17e90c5e | 513 | VM_DEFINE_HOOK (SCM_VM_NEXT_HOOK); |
a98cef7e KN |
514 | } |
515 | #undef FUNC_NAME | |
516 | ||
7a0d0cee KN |
517 | SCM_DEFINE (scm_vm_break_hook, "vm-break-hook", 1, 0, 0, |
518 | (SCM vm), | |
519 | "") | |
520 | #define FUNC_NAME s_scm_vm_break_hook | |
521 | { | |
522 | VM_DEFINE_HOOK (SCM_VM_BREAK_HOOK); | |
523 | } | |
524 | #undef FUNC_NAME | |
525 | ||
17e90c5e KN |
526 | SCM_DEFINE (scm_vm_enter_hook, "vm-enter-hook", 1, 0, 0, |
527 | (SCM vm), | |
528 | "") | |
529 | #define FUNC_NAME s_scm_vm_enter_hook | |
a98cef7e | 530 | { |
17e90c5e | 531 | VM_DEFINE_HOOK (SCM_VM_ENTER_HOOK); |
a98cef7e KN |
532 | } |
533 | #undef FUNC_NAME | |
534 | ||
17e90c5e KN |
535 | SCM_DEFINE (scm_vm_apply_hook, "vm-apply-hook", 1, 0, 0, |
536 | (SCM vm), | |
537 | "") | |
538 | #define FUNC_NAME s_scm_vm_apply_hook | |
a98cef7e | 539 | { |
17e90c5e | 540 | VM_DEFINE_HOOK (SCM_VM_APPLY_HOOK); |
a98cef7e KN |
541 | } |
542 | #undef FUNC_NAME | |
543 | ||
17e90c5e | 544 | SCM_DEFINE (scm_vm_exit_hook, "vm-exit-hook", 1, 0, 0, |
a98cef7e | 545 | (SCM vm), |
17e90c5e KN |
546 | "") |
547 | #define FUNC_NAME s_scm_vm_exit_hook | |
a98cef7e | 548 | { |
17e90c5e | 549 | VM_DEFINE_HOOK (SCM_VM_EXIT_HOOK); |
a98cef7e KN |
550 | } |
551 | #undef FUNC_NAME | |
552 | ||
17e90c5e | 553 | SCM_DEFINE (scm_vm_return_hook, "vm-return-hook", 1, 0, 0, |
a98cef7e | 554 | (SCM vm), |
17e90c5e KN |
555 | "") |
556 | #define FUNC_NAME s_scm_vm_return_hook | |
a98cef7e | 557 | { |
17e90c5e | 558 | VM_DEFINE_HOOK (SCM_VM_RETURN_HOOK); |
a98cef7e KN |
559 | } |
560 | #undef FUNC_NAME | |
561 | ||
17e90c5e KN |
562 | SCM_DEFINE (scm_vm_option, "vm-option", 2, 0, 0, |
563 | (SCM vm, SCM key), | |
564 | "") | |
565 | #define FUNC_NAME s_scm_vm_option | |
a98cef7e KN |
566 | { |
567 | SCM_VALIDATE_VM (1, vm); | |
17e90c5e | 568 | return scm_assq_ref (SCM_VM_DATA (vm)->options, key); |
a98cef7e KN |
569 | } |
570 | #undef FUNC_NAME | |
571 | ||
17e90c5e KN |
572 | SCM_DEFINE (scm_set_vm_option_x, "set-vm-option!", 3, 0, 0, |
573 | (SCM vm, SCM key, SCM val), | |
574 | "") | |
575 | #define FUNC_NAME s_scm_set_vm_option_x | |
a98cef7e KN |
576 | { |
577 | SCM_VALIDATE_VM (1, vm); | |
17e90c5e KN |
578 | SCM_VM_DATA (vm)->options |
579 | = scm_assq_set_x (SCM_VM_DATA (vm)->options, key, val); | |
580 | return SCM_UNSPECIFIED; | |
a98cef7e KN |
581 | } |
582 | #undef FUNC_NAME | |
583 | ||
17e90c5e | 584 | SCM_DEFINE (scm_vm_stats, "vm-stats", 1, 0, 0, |
a98cef7e | 585 | (SCM vm), |
17e90c5e KN |
586 | "") |
587 | #define FUNC_NAME s_scm_vm_stats | |
a98cef7e | 588 | { |
17e90c5e KN |
589 | SCM stats; |
590 | ||
a98cef7e | 591 | SCM_VALIDATE_VM (1, vm); |
17e90c5e | 592 | |
2d80426a LC |
593 | stats = scm_make_vector (SCM_I_MAKINUM (2), SCM_UNSPECIFIED); |
594 | scm_vector_set_x (stats, SCM_I_MAKINUM (0), | |
f9e8c09d | 595 | scm_from_ulong (SCM_VM_DATA (vm)->time)); |
2d80426a | 596 | scm_vector_set_x (stats, SCM_I_MAKINUM (1), |
f9e8c09d | 597 | scm_from_ulong (SCM_VM_DATA (vm)->clock)); |
17e90c5e KN |
598 | |
599 | return stats; | |
a98cef7e KN |
600 | } |
601 | #undef FUNC_NAME | |
602 | ||
b1b942b7 | 603 | SCM_DEFINE (scm_vm_trace_frame, "vm-trace-frame", 1, 0, 0, |
17e90c5e KN |
604 | (SCM vm), |
605 | "") | |
b1b942b7 | 606 | #define FUNC_NAME s_scm_vm_trace_frame |
a98cef7e | 607 | { |
a98cef7e | 608 | SCM_VALIDATE_VM (1, vm); |
b1b942b7 | 609 | return SCM_VM_DATA (vm)->trace_frame; |
a98cef7e KN |
610 | } |
611 | #undef FUNC_NAME | |
612 | ||
613 | \f | |
614 | /* | |
17e90c5e | 615 | * Initialize |
a98cef7e KN |
616 | */ |
617 | ||
07e56b27 AW |
618 | SCM scm_load_compiled_with_vm (SCM file) |
619 | { | |
53e28ed9 | 620 | SCM program = scm_make_program (scm_load_objcode (file), |
20d47c39 | 621 | SCM_BOOL_F, SCM_BOOL_F); |
07e56b27 | 622 | |
4abef68f | 623 | return scm_c_vm_run (scm_the_vm (), program, NULL, 0); |
07e56b27 AW |
624 | } |
625 | ||
17e90c5e | 626 | void |
07e56b27 | 627 | scm_bootstrap_vm (void) |
17e90c5e | 628 | { |
07e56b27 AW |
629 | static int strappage = 0; |
630 | ||
631 | if (strappage) | |
632 | return; | |
633 | ||
634 | scm_bootstrap_frames (); | |
635 | scm_bootstrap_instructions (); | |
636 | scm_bootstrap_objcodes (); | |
637 | scm_bootstrap_programs (); | |
a98cef7e | 638 | |
17e90c5e | 639 | scm_tc16_vm_cont = scm_make_smob_type ("vm-cont", 0); |
a98cef7e | 640 | |
17e90c5e | 641 | scm_tc16_vm = scm_make_smob_type ("vm", 0); |
17e90c5e | 642 | scm_set_smob_apply (scm_tc16_vm, scm_vm_apply, 1, 0, 1); |
a98cef7e | 643 | |
83495480 AW |
644 | scm_c_define ("load-compiled", |
645 | scm_c_make_gsubr ("load-compiled/vm", 1, 0, 0, | |
646 | scm_load_compiled_with_vm)); | |
07e56b27 | 647 | |
90b0be20 AW |
648 | sym_vm_run = scm_permanent_object (scm_from_locale_symbol ("vm-run")); |
649 | sym_vm_error = scm_permanent_object (scm_from_locale_symbol ("vm-error")); | |
650 | sym_debug = scm_permanent_object (scm_from_locale_symbol ("debug")); | |
651 | ||
60ae5ca2 AW |
652 | scm_c_register_extension ("libguile", "scm_init_vm", |
653 | (scm_t_extension_init_func)scm_init_vm, NULL); | |
654 | ||
07e56b27 | 655 | strappage = 1; |
e3eb628d LC |
656 | |
657 | #ifdef VM_ENABLE_PRECISE_STACK_GC_SCAN | |
658 | vm_stack_gc_kind = | |
659 | GC_new_kind (GC_new_free_list (), | |
660 | GC_MAKE_PROC (GC_new_proc (vm_stack_mark), 0), | |
661 | 0, 1); | |
662 | ||
663 | #endif | |
07e56b27 AW |
664 | } |
665 | ||
666 | void | |
667 | scm_init_vm (void) | |
668 | { | |
669 | scm_bootstrap_vm (); | |
670 | ||
17e90c5e | 671 | #ifndef SCM_MAGIC_SNARFER |
aeeff258 | 672 | #include "libguile/vm.x" |
17e90c5e | 673 | #endif |
a98cef7e | 674 | } |
17e90c5e KN |
675 | |
676 | /* | |
677 | Local Variables: | |
678 | c-file-style: "gnu" | |
679 | End: | |
680 | */ |