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8f5cfc81 | 1 | /* Copyright (C) 2001 Free Software Foundation, Inc. |
a98cef7e KN |
2 | * |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this software; see the file COPYING. If not, write to | |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, | |
16 | * Boston, MA 02111-1307 USA | |
17 | * | |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
40 | * If you do not wish that, delete this exception notice. */ | |
41 | ||
13c47753 AW |
42 | #if HAVE_CONFIG_H |
43 | # include <config.h> | |
44 | #endif | |
45 | ||
17e90c5e | 46 | #include <string.h> |
ac99cb0c KN |
47 | #include "envs.h" |
48 | #include "frames.h" | |
17e90c5e | 49 | #include "instructions.h" |
8f5cfc81 | 50 | #include "objcodes.h" |
ac99cb0c | 51 | #include "programs.h" |
a98cef7e KN |
52 | #include "vm.h" |
53 | ||
a98cef7e KN |
54 | /* I sometimes use this for debugging. */ |
55 | #define vm_puts(OBJ) \ | |
56 | { \ | |
22bcbe8c AW |
57 | scm_display (OBJ, scm_current_error_port ()); \ |
58 | scm_newline (scm_current_error_port ()); \ | |
a98cef7e KN |
59 | } |
60 | ||
61 | \f | |
a98cef7e KN |
62 | /* |
63 | * VM Continuation | |
64 | */ | |
65 | ||
f9e8c09d | 66 | scm_t_bits scm_tc16_vm_cont; |
17e90c5e KN |
67 | |
68 | ||
69 | #define SCM_VM_CONT_P(OBJ) SCM_SMOB_PREDICATE (scm_tc16_vm_cont, OBJ) | |
3d5ee0cd | 70 | #define SCM_VM_CONT_VP(CONT) ((struct scm_vm *) SCM_CELL_WORD_1 (CONT)) |
a98cef7e KN |
71 | |
72 | static SCM | |
3d5ee0cd | 73 | capture_vm_cont (struct scm_vm *vp) |
a98cef7e | 74 | { |
d8eeb67c | 75 | struct scm_vm *p = scm_gc_malloc (sizeof (*p), "capture_vm_cont"); |
3d5ee0cd | 76 | p->stack_size = vp->stack_limit - vp->sp; |
d8eeb67c LC |
77 | p->stack_base = scm_gc_malloc (p->stack_size * sizeof (SCM), |
78 | "capture_vm_cont"); | |
17e90c5e | 79 | p->stack_limit = p->stack_base + p->stack_size - 2; |
3d5ee0cd KN |
80 | p->ip = vp->ip; |
81 | p->sp = (SCM *) (vp->stack_limit - vp->sp); | |
82 | p->fp = (SCM *) (vp->stack_limit - vp->fp); | |
83 | memcpy (p->stack_base, vp->sp + 1, vp->stack_size * sizeof (SCM)); | |
17e90c5e | 84 | SCM_RETURN_NEWSMOB (scm_tc16_vm_cont, p); |
a98cef7e KN |
85 | } |
86 | ||
87 | static void | |
3d5ee0cd | 88 | reinstate_vm_cont (struct scm_vm *vp, SCM cont) |
a98cef7e | 89 | { |
3d5ee0cd KN |
90 | struct scm_vm *p = SCM_VM_CONT_VP (cont); |
91 | if (vp->stack_size < p->stack_size) | |
a98cef7e | 92 | { |
17e90c5e | 93 | /* puts ("FIXME: Need to expand"); */ |
a98cef7e KN |
94 | abort (); |
95 | } | |
3d5ee0cd KN |
96 | vp->ip = p->ip; |
97 | vp->sp = vp->stack_limit - (int) p->sp; | |
98 | vp->fp = vp->stack_limit - (int) p->fp; | |
99 | memcpy (vp->sp + 1, p->stack_base, p->stack_size * sizeof (SCM)); | |
a98cef7e KN |
100 | } |
101 | ||
17d1b4bf AW |
102 | struct vm_unwind_data |
103 | { | |
104 | struct scm_vm *vp; | |
105 | SCM *sp; | |
106 | SCM *fp; | |
107 | SCM this_frame; | |
108 | }; | |
109 | ||
110 | static void | |
111 | vm_reset_stack (void *data) | |
112 | { | |
113 | struct vm_unwind_data *w = data; | |
114 | ||
115 | w->vp->sp = w->sp; | |
116 | w->vp->fp = w->fp; | |
117 | w->vp->this_frame = w->this_frame; | |
118 | } | |
119 | ||
a98cef7e | 120 | static SCM |
17e90c5e | 121 | vm_cont_mark (SCM obj) |
a98cef7e KN |
122 | { |
123 | SCM *p; | |
3d5ee0cd KN |
124 | struct scm_vm *vp = SCM_VM_CONT_VP (obj); |
125 | for (p = vp->stack_base; p <= vp->stack_limit; p++) | |
a98cef7e KN |
126 | if (SCM_NIMP (*p)) |
127 | scm_gc_mark (*p); | |
128 | return SCM_BOOL_F; | |
129 | } | |
130 | ||
131 | static scm_sizet | |
17e90c5e | 132 | vm_cont_free (SCM obj) |
a98cef7e | 133 | { |
3d5ee0cd | 134 | struct scm_vm *p = SCM_VM_CONT_VP (obj); |
d8eeb67c LC |
135 | |
136 | scm_gc_free (p->stack_base, p->stack_size * sizeof (SCM), "stack-base"); | |
137 | scm_gc_free (p, sizeof (struct scm_vm), "vm"); | |
138 | ||
139 | return 0; | |
a98cef7e KN |
140 | } |
141 | ||
17e90c5e KN |
142 | \f |
143 | /* | |
144 | * VM Internal functions | |
145 | */ | |
146 | ||
41f248a8 | 147 | SCM_SYMBOL (sym_vm_run, "vm-run"); |
17e90c5e KN |
148 | SCM_SYMBOL (sym_vm_error, "vm-error"); |
149 | ||
150 | static scm_byte_t * | |
151 | vm_fetch_length (scm_byte_t *ip, size_t *lenp) | |
a98cef7e | 152 | { |
4bfb26f5 | 153 | /* NOTE: format defined in system/vm/conv.scm */ |
17e90c5e KN |
154 | *lenp = *ip++; |
155 | if (*lenp < 254) | |
156 | return ip; | |
157 | else if (*lenp == 254) | |
46cd9a34 KN |
158 | { |
159 | int b1 = *ip++; | |
160 | int b2 = *ip++; | |
161 | *lenp = (b1 << 8) + b2; | |
162 | } | |
17e90c5e | 163 | else |
46cd9a34 KN |
164 | { |
165 | int b1 = *ip++; | |
166 | int b2 = *ip++; | |
167 | int b3 = *ip++; | |
168 | int b4 = *ip++; | |
169 | *lenp = (b1 << 24) + (b2 << 16) + (b3 << 8) + b4; | |
170 | } | |
17e90c5e | 171 | return ip; |
a98cef7e KN |
172 | } |
173 | ||
af988bbf | 174 | static SCM |
a6df585a | 175 | vm_heapify_frames_1 (struct scm_vm *vp, SCM *fp, SCM *sp, SCM **destp) |
af988bbf | 176 | { |
a6df585a | 177 | SCM frame; |
af988bbf | 178 | SCM *dl = SCM_FRAME_DYNAMIC_LINK (fp); |
a6df585a KN |
179 | SCM *src = SCM_FRAME_UPPER_ADDRESS (fp); |
180 | SCM *dest = SCM_FRAME_LOWER_ADDRESS (fp); | |
af988bbf KN |
181 | |
182 | if (!dl) | |
183 | { | |
184 | /* The top frame */ | |
af988bbf KN |
185 | frame = scm_c_make_heap_frame (fp); |
186 | fp = SCM_HEAP_FRAME_POINTER (frame); | |
187 | SCM_FRAME_HEAP_LINK (fp) = SCM_BOOL_T; | |
188 | } | |
189 | else | |
190 | { | |
a6df585a | 191 | /* Child frames */ |
af988bbf KN |
192 | SCM link = SCM_FRAME_HEAP_LINK (dl); |
193 | if (!SCM_FALSEP (link)) | |
a6df585a | 194 | link = SCM_FRAME_LOWER_ADDRESS (dl)[-1]; /* self link */ |
af988bbf | 195 | else |
a6df585a | 196 | link = vm_heapify_frames_1 (vp, dl, dest - 1, &dest); |
af988bbf KN |
197 | frame = scm_c_make_heap_frame (fp); |
198 | fp = SCM_HEAP_FRAME_POINTER (frame); | |
199 | SCM_FRAME_HEAP_LINK (fp) = link; | |
b6368dbb | 200 | SCM_FRAME_SET_DYNAMIC_LINK (fp, SCM_HEAP_FRAME_POINTER (link)); |
af988bbf KN |
201 | } |
202 | ||
17d1b4bf AW |
203 | /* Apparently the intention here is to be able to have a frame on the heap, |
204 | but data on the stack, so that you can push as much as you want on the | |
205 | stack; but I think that it's currently causing borkage with nonlocal exits | |
206 | and the unwind handler, which reinstates the sp and fp, but it's no longer | |
207 | pointing at a valid stack frame. So disable for now, we'll get back to | |
208 | this later. */ | |
209 | #if 0 | |
af988bbf | 210 | /* Move stack data */ |
a6df585a KN |
211 | for (; src <= sp; src++, dest++) |
212 | *dest = *src; | |
213 | *destp = dest; | |
17d1b4bf | 214 | #endif |
af988bbf KN |
215 | |
216 | return frame; | |
217 | } | |
218 | ||
219 | static SCM | |
220 | vm_heapify_frames (SCM vm) | |
221 | { | |
222 | struct scm_vm *vp = SCM_VM_DATA (vm); | |
223 | if (SCM_FALSEP (SCM_FRAME_HEAP_LINK (vp->fp))) | |
224 | { | |
a6df585a KN |
225 | SCM *dest; |
226 | vp->this_frame = vm_heapify_frames_1 (vp, vp->fp, vp->sp, &dest); | |
af988bbf | 227 | vp->fp = SCM_HEAP_FRAME_POINTER (vp->this_frame); |
a6df585a | 228 | vp->sp = dest - 1; |
af988bbf KN |
229 | } |
230 | return vp->this_frame; | |
231 | } | |
232 | ||
a98cef7e KN |
233 | \f |
234 | /* | |
235 | * VM | |
236 | */ | |
237 | ||
c0a25ecc | 238 | #define VM_DEFAULT_STACK_SIZE (16 * 1024) |
17e90c5e KN |
239 | |
240 | #define VM_REGULAR_ENGINE 0 | |
241 | #define VM_DEBUG_ENGINE 1 | |
242 | ||
243 | #if 0 | |
244 | #define VM_NAME vm_regular_engine | |
245 | #define VM_ENGINE VM_REGULAR_ENGINE | |
246 | #include "vm_engine.c" | |
247 | #undef VM_NAME | |
248 | #undef VM_ENGINE | |
249 | #endif | |
250 | ||
251 | #define VM_NAME vm_debug_engine | |
252 | #define VM_ENGINE VM_DEBUG_ENGINE | |
253 | #include "vm_engine.c" | |
254 | #undef VM_NAME | |
255 | #undef VM_ENGINE | |
256 | ||
f9e8c09d | 257 | scm_t_bits scm_tc16_vm; |
a98cef7e | 258 | |
499a4c07 KN |
259 | static SCM the_vm; |
260 | ||
a98cef7e | 261 | static SCM |
17e90c5e KN |
262 | make_vm (void) |
263 | #define FUNC_NAME "make_vm" | |
a98cef7e | 264 | { |
17e90c5e | 265 | int i; |
d8eeb67c LC |
266 | struct scm_vm *vp = scm_gc_malloc (sizeof (struct scm_vm), "vm"); |
267 | ||
3d5ee0cd | 268 | vp->stack_size = VM_DEFAULT_STACK_SIZE; |
d8eeb67c LC |
269 | vp->stack_base = scm_gc_malloc (vp->stack_size * sizeof (SCM), |
270 | "stack-base"); | |
3616e9e9 KN |
271 | vp->stack_limit = vp->stack_base + vp->stack_size - 3; |
272 | vp->ip = NULL; | |
273 | vp->sp = vp->stack_base - 1; | |
274 | vp->fp = NULL; | |
3d5ee0cd KN |
275 | vp->time = 0; |
276 | vp->clock = 0; | |
277 | vp->options = SCM_EOL; | |
af988bbf | 278 | vp->this_frame = SCM_BOOL_F; |
ac99cb0c | 279 | vp->last_frame = SCM_BOOL_F; |
d0168f3d | 280 | vp->last_ip = NULL; |
17e90c5e | 281 | for (i = 0; i < SCM_VM_NUM_HOOKS; i++) |
3d5ee0cd KN |
282 | vp->hooks[i] = SCM_BOOL_F; |
283 | SCM_RETURN_NEWSMOB (scm_tc16_vm, vp); | |
a98cef7e | 284 | } |
17e90c5e | 285 | #undef FUNC_NAME |
a98cef7e KN |
286 | |
287 | static SCM | |
17e90c5e | 288 | vm_mark (SCM obj) |
a98cef7e | 289 | { |
17e90c5e | 290 | int i; |
3d5ee0cd | 291 | struct scm_vm *vp = SCM_VM_DATA (obj); |
17e90c5e | 292 | |
af988bbf KN |
293 | /* mark the stack conservatively */ |
294 | scm_mark_locations ((SCM_STACKITEM *) vp->stack_base, | |
295 | sizeof (SCM) * (vp->sp - vp->stack_base + 1)); | |
a98cef7e | 296 | |
af988bbf | 297 | /* mark other objects */ |
17e90c5e | 298 | for (i = 0; i < SCM_VM_NUM_HOOKS; i++) |
3d5ee0cd | 299 | scm_gc_mark (vp->hooks[i]); |
af988bbf | 300 | scm_gc_mark (vp->this_frame); |
ac99cb0c | 301 | scm_gc_mark (vp->last_frame); |
3d5ee0cd | 302 | return vp->options; |
a98cef7e KN |
303 | } |
304 | ||
17e90c5e KN |
305 | static scm_sizet |
306 | vm_free (SCM obj) | |
307 | { | |
3d5ee0cd | 308 | struct scm_vm *vp = SCM_VM_DATA (obj); |
d8eeb67c LC |
309 | |
310 | scm_gc_free (vp->stack_base, vp->stack_size * sizeof (SCM), | |
311 | "stack-base"); | |
312 | scm_gc_free (vp, sizeof (struct scm_vm), "vm"); | |
313 | ||
314 | return 0; | |
17e90c5e KN |
315 | } |
316 | ||
317 | SCM_SYMBOL (sym_debug, "debug"); | |
318 | ||
319 | SCM | |
320 | scm_vm_apply (SCM vm, SCM program, SCM args) | |
321 | #define FUNC_NAME "scm_vm_apply" | |
a98cef7e | 322 | { |
17e90c5e | 323 | SCM_VALIDATE_PROGRAM (1, program); |
41f248a8 | 324 | return vm_run (vm, program, args); |
a98cef7e | 325 | } |
17e90c5e | 326 | #undef FUNC_NAME |
a98cef7e KN |
327 | |
328 | /* Scheme interface */ | |
329 | ||
330 | SCM_DEFINE (scm_vm_version, "vm-version", 0, 0, 0, | |
17e90c5e KN |
331 | (void), |
332 | "") | |
a98cef7e KN |
333 | #define FUNC_NAME s_scm_vm_version |
334 | { | |
d3518113 | 335 | return scm_from_locale_string (PACKAGE_VERSION); |
a98cef7e KN |
336 | } |
337 | #undef FUNC_NAME | |
338 | ||
499a4c07 KN |
339 | SCM_DEFINE (scm_the_vm, "the-vm", 0, 0, 0, |
340 | (), | |
341 | "") | |
342 | #define FUNC_NAME s_scm_the_vm | |
343 | { | |
344 | return the_vm; | |
345 | } | |
346 | #undef FUNC_NAME | |
347 | ||
348 | ||
a98cef7e KN |
349 | SCM_DEFINE (scm_vm_p, "vm?", 1, 0, 0, |
350 | (SCM obj), | |
17e90c5e | 351 | "") |
a98cef7e KN |
352 | #define FUNC_NAME s_scm_vm_p |
353 | { | |
354 | return SCM_BOOL (SCM_VM_P (obj)); | |
355 | } | |
356 | #undef FUNC_NAME | |
357 | ||
358 | SCM_DEFINE (scm_make_vm, "make-vm", 0, 0, 0, | |
17e90c5e KN |
359 | (void), |
360 | "") | |
361 | #define FUNC_NAME s_scm_make_vm, | |
a98cef7e | 362 | { |
17e90c5e | 363 | return make_vm (); |
a98cef7e KN |
364 | } |
365 | #undef FUNC_NAME | |
366 | ||
17e90c5e | 367 | SCM_DEFINE (scm_vm_ip, "vm:ip", 1, 0, 0, |
a98cef7e | 368 | (SCM vm), |
17e90c5e KN |
369 | "") |
370 | #define FUNC_NAME s_scm_vm_ip | |
a98cef7e KN |
371 | { |
372 | SCM_VALIDATE_VM (1, vm); | |
f41cb00c | 373 | return scm_from_ulong ((unsigned long) SCM_VM_DATA (vm)->ip); |
a98cef7e KN |
374 | } |
375 | #undef FUNC_NAME | |
376 | ||
377 | SCM_DEFINE (scm_vm_sp, "vm:sp", 1, 0, 0, | |
378 | (SCM vm), | |
17e90c5e | 379 | "") |
a98cef7e KN |
380 | #define FUNC_NAME s_scm_vm_sp |
381 | { | |
382 | SCM_VALIDATE_VM (1, vm); | |
f41cb00c | 383 | return scm_from_ulong ((unsigned long) SCM_VM_DATA (vm)->sp); |
a98cef7e KN |
384 | } |
385 | #undef FUNC_NAME | |
386 | ||
387 | SCM_DEFINE (scm_vm_fp, "vm:fp", 1, 0, 0, | |
388 | (SCM vm), | |
17e90c5e | 389 | "") |
a98cef7e KN |
390 | #define FUNC_NAME s_scm_vm_fp |
391 | { | |
392 | SCM_VALIDATE_VM (1, vm); | |
f41cb00c | 393 | return scm_from_ulong ((unsigned long) SCM_VM_DATA (vm)->fp); |
a98cef7e KN |
394 | } |
395 | #undef FUNC_NAME | |
396 | ||
17e90c5e KN |
397 | #define VM_DEFINE_HOOK(n) \ |
398 | { \ | |
3d5ee0cd | 399 | struct scm_vm *vp; \ |
17e90c5e | 400 | SCM_VALIDATE_VM (1, vm); \ |
3d5ee0cd KN |
401 | vp = SCM_VM_DATA (vm); \ |
402 | if (SCM_FALSEP (vp->hooks[n])) \ | |
238e7a11 | 403 | vp->hooks[n] = scm_make_hook (SCM_I_MAKINUM (1)); \ |
3d5ee0cd | 404 | return vp->hooks[n]; \ |
17e90c5e KN |
405 | } |
406 | ||
407 | SCM_DEFINE (scm_vm_boot_hook, "vm-boot-hook", 1, 0, 0, | |
a98cef7e | 408 | (SCM vm), |
17e90c5e KN |
409 | "") |
410 | #define FUNC_NAME s_scm_vm_boot_hook | |
a98cef7e | 411 | { |
17e90c5e | 412 | VM_DEFINE_HOOK (SCM_VM_BOOT_HOOK); |
a98cef7e KN |
413 | } |
414 | #undef FUNC_NAME | |
415 | ||
17e90c5e KN |
416 | SCM_DEFINE (scm_vm_halt_hook, "vm-halt-hook", 1, 0, 0, |
417 | (SCM vm), | |
418 | "") | |
419 | #define FUNC_NAME s_scm_vm_halt_hook | |
a98cef7e | 420 | { |
17e90c5e | 421 | VM_DEFINE_HOOK (SCM_VM_HALT_HOOK); |
a98cef7e KN |
422 | } |
423 | #undef FUNC_NAME | |
424 | ||
17e90c5e | 425 | SCM_DEFINE (scm_vm_next_hook, "vm-next-hook", 1, 0, 0, |
a98cef7e | 426 | (SCM vm), |
17e90c5e KN |
427 | "") |
428 | #define FUNC_NAME s_scm_vm_next_hook | |
a98cef7e | 429 | { |
17e90c5e | 430 | VM_DEFINE_HOOK (SCM_VM_NEXT_HOOK); |
a98cef7e KN |
431 | } |
432 | #undef FUNC_NAME | |
433 | ||
7a0d0cee KN |
434 | SCM_DEFINE (scm_vm_break_hook, "vm-break-hook", 1, 0, 0, |
435 | (SCM vm), | |
436 | "") | |
437 | #define FUNC_NAME s_scm_vm_break_hook | |
438 | { | |
439 | VM_DEFINE_HOOK (SCM_VM_BREAK_HOOK); | |
440 | } | |
441 | #undef FUNC_NAME | |
442 | ||
17e90c5e KN |
443 | SCM_DEFINE (scm_vm_enter_hook, "vm-enter-hook", 1, 0, 0, |
444 | (SCM vm), | |
445 | "") | |
446 | #define FUNC_NAME s_scm_vm_enter_hook | |
a98cef7e | 447 | { |
17e90c5e | 448 | VM_DEFINE_HOOK (SCM_VM_ENTER_HOOK); |
a98cef7e KN |
449 | } |
450 | #undef FUNC_NAME | |
451 | ||
17e90c5e KN |
452 | SCM_DEFINE (scm_vm_apply_hook, "vm-apply-hook", 1, 0, 0, |
453 | (SCM vm), | |
454 | "") | |
455 | #define FUNC_NAME s_scm_vm_apply_hook | |
a98cef7e | 456 | { |
17e90c5e | 457 | VM_DEFINE_HOOK (SCM_VM_APPLY_HOOK); |
a98cef7e KN |
458 | } |
459 | #undef FUNC_NAME | |
460 | ||
17e90c5e | 461 | SCM_DEFINE (scm_vm_exit_hook, "vm-exit-hook", 1, 0, 0, |
a98cef7e | 462 | (SCM vm), |
17e90c5e KN |
463 | "") |
464 | #define FUNC_NAME s_scm_vm_exit_hook | |
a98cef7e | 465 | { |
17e90c5e | 466 | VM_DEFINE_HOOK (SCM_VM_EXIT_HOOK); |
a98cef7e KN |
467 | } |
468 | #undef FUNC_NAME | |
469 | ||
17e90c5e | 470 | SCM_DEFINE (scm_vm_return_hook, "vm-return-hook", 1, 0, 0, |
a98cef7e | 471 | (SCM vm), |
17e90c5e KN |
472 | "") |
473 | #define FUNC_NAME s_scm_vm_return_hook | |
a98cef7e | 474 | { |
17e90c5e | 475 | VM_DEFINE_HOOK (SCM_VM_RETURN_HOOK); |
a98cef7e KN |
476 | } |
477 | #undef FUNC_NAME | |
478 | ||
17e90c5e KN |
479 | SCM_DEFINE (scm_vm_option, "vm-option", 2, 0, 0, |
480 | (SCM vm, SCM key), | |
481 | "") | |
482 | #define FUNC_NAME s_scm_vm_option | |
a98cef7e KN |
483 | { |
484 | SCM_VALIDATE_VM (1, vm); | |
17e90c5e | 485 | return scm_assq_ref (SCM_VM_DATA (vm)->options, key); |
a98cef7e KN |
486 | } |
487 | #undef FUNC_NAME | |
488 | ||
17e90c5e KN |
489 | SCM_DEFINE (scm_set_vm_option_x, "set-vm-option!", 3, 0, 0, |
490 | (SCM vm, SCM key, SCM val), | |
491 | "") | |
492 | #define FUNC_NAME s_scm_set_vm_option_x | |
a98cef7e KN |
493 | { |
494 | SCM_VALIDATE_VM (1, vm); | |
17e90c5e KN |
495 | SCM_VM_DATA (vm)->options |
496 | = scm_assq_set_x (SCM_VM_DATA (vm)->options, key, val); | |
497 | return SCM_UNSPECIFIED; | |
a98cef7e KN |
498 | } |
499 | #undef FUNC_NAME | |
500 | ||
17e90c5e | 501 | SCM_DEFINE (scm_vm_stats, "vm-stats", 1, 0, 0, |
a98cef7e | 502 | (SCM vm), |
17e90c5e KN |
503 | "") |
504 | #define FUNC_NAME s_scm_vm_stats | |
a98cef7e | 505 | { |
17e90c5e KN |
506 | SCM stats; |
507 | ||
a98cef7e | 508 | SCM_VALIDATE_VM (1, vm); |
17e90c5e | 509 | |
2d80426a LC |
510 | stats = scm_make_vector (SCM_I_MAKINUM (2), SCM_UNSPECIFIED); |
511 | scm_vector_set_x (stats, SCM_I_MAKINUM (0), | |
f9e8c09d | 512 | scm_from_ulong (SCM_VM_DATA (vm)->time)); |
2d80426a | 513 | scm_vector_set_x (stats, SCM_I_MAKINUM (1), |
f9e8c09d | 514 | scm_from_ulong (SCM_VM_DATA (vm)->clock)); |
17e90c5e KN |
515 | |
516 | return stats; | |
a98cef7e KN |
517 | } |
518 | #undef FUNC_NAME | |
519 | ||
17e90c5e KN |
520 | #define VM_CHECK_RUNNING(vm) \ |
521 | if (!SCM_VM_DATA (vm)->ip) \ | |
522 | SCM_MISC_ERROR ("Not running", SCM_LIST1 (vm)) | |
523 | ||
af988bbf | 524 | SCM_DEFINE (scm_vm_this_frame, "vm-this-frame", 1, 0, 0, |
a98cef7e | 525 | (SCM vm), |
17e90c5e | 526 | "") |
af988bbf | 527 | #define FUNC_NAME s_scm_vm_this_frame |
a98cef7e KN |
528 | { |
529 | SCM_VALIDATE_VM (1, vm); | |
af988bbf | 530 | return SCM_VM_DATA (vm)->this_frame; |
ac99cb0c KN |
531 | } |
532 | #undef FUNC_NAME | |
533 | ||
534 | SCM_DEFINE (scm_vm_last_frame, "vm-last-frame", 1, 0, 0, | |
535 | (SCM vm), | |
536 | "") | |
537 | #define FUNC_NAME s_scm_vm_last_frame | |
538 | { | |
539 | SCM_VALIDATE_VM (1, vm); | |
540 | return SCM_VM_DATA (vm)->last_frame; | |
a98cef7e KN |
541 | } |
542 | #undef FUNC_NAME | |
543 | ||
d0168f3d AW |
544 | SCM_DEFINE (scm_vm_last_ip, "vm:last-ip", 1, 0, 0, |
545 | (SCM vm), | |
546 | "") | |
547 | #define FUNC_NAME s_scm_vm_last_ip | |
548 | { | |
549 | SCM_VALIDATE_VM (1, vm); | |
550 | return scm_from_ulong ((unsigned long) SCM_VM_DATA (vm)->last_ip); | |
551 | } | |
552 | #undef FUNC_NAME | |
553 | ||
68a2e18a AW |
554 | SCM_DEFINE (scm_vm_save_stack, "vm-save-stack", 1, 0, 0, |
555 | (SCM vm), | |
556 | "") | |
557 | #define FUNC_NAME s_scm_vm_save_stack | |
558 | { | |
17d1b4bf AW |
559 | struct scm_vm *vp; |
560 | SCM *dest; | |
68a2e18a | 561 | SCM_VALIDATE_VM (1, vm); |
17d1b4bf | 562 | vp = SCM_VM_DATA (vm); |
7e4760e4 AW |
563 | |
564 | if (vp->fp) | |
565 | { | |
566 | vp->last_frame = vm_heapify_frames_1 (vp, vp->fp, vp->sp, &dest); | |
567 | vp->last_ip = vp->ip; | |
568 | } | |
569 | else | |
570 | { | |
571 | vp->last_frame = SCM_BOOL_F; | |
572 | } | |
573 | ||
574 | ||
17d1b4bf | 575 | return vp->last_frame; |
68a2e18a AW |
576 | } |
577 | #undef FUNC_NAME | |
578 | ||
17e90c5e KN |
579 | SCM_DEFINE (scm_vm_fetch_code, "vm-fetch-code", 1, 0, 0, |
580 | (SCM vm), | |
581 | "") | |
582 | #define FUNC_NAME s_scm_vm_fetch_code | |
583 | { | |
584 | int i; | |
585 | SCM list; | |
586 | scm_byte_t *ip; | |
587 | struct scm_instruction *p; | |
a98cef7e | 588 | |
17e90c5e KN |
589 | SCM_VALIDATE_VM (1, vm); |
590 | VM_CHECK_RUNNING (vm); | |
a98cef7e | 591 | |
17e90c5e KN |
592 | ip = SCM_VM_DATA (vm)->ip; |
593 | p = SCM_INSTRUCTION (*ip); | |
a98cef7e | 594 | |
17e90c5e KN |
595 | list = SCM_LIST1 (scm_str2symbol (p->name)); |
596 | for (i = 1; i <= p->len; i++) | |
2d80426a | 597 | list = scm_cons (SCM_I_MAKINUM (ip[i]), list); |
17e90c5e KN |
598 | return scm_reverse_x (list, SCM_EOL); |
599 | } | |
600 | #undef FUNC_NAME | |
601 | ||
602 | SCM_DEFINE (scm_vm_fetch_stack, "vm-fetch-stack", 1, 0, 0, | |
603 | (SCM vm), | |
604 | "") | |
605 | #define FUNC_NAME s_scm_vm_fetch_stack | |
a98cef7e | 606 | { |
3616e9e9 KN |
607 | SCM *sp; |
608 | SCM ls = SCM_EOL; | |
609 | struct scm_vm *vp; | |
a98cef7e KN |
610 | |
611 | SCM_VALIDATE_VM (1, vm); | |
17e90c5e | 612 | VM_CHECK_RUNNING (vm); |
a98cef7e | 613 | |
3616e9e9 | 614 | vp = SCM_VM_DATA (vm); |
af988bbf | 615 | for (sp = vp->stack_base; sp <= vp->sp; sp++) |
3616e9e9 KN |
616 | ls = scm_cons (*sp, ls); |
617 | return ls; | |
a98cef7e KN |
618 | } |
619 | #undef FUNC_NAME | |
620 | ||
621 | \f | |
622 | /* | |
17e90c5e | 623 | * Initialize |
a98cef7e KN |
624 | */ |
625 | ||
07e56b27 AW |
626 | SCM scm_load_compiled_with_vm (SCM file) |
627 | { | |
628 | SCM program = scm_objcode_to_program (scm_load_objcode (file)); | |
629 | ||
630 | return vm_run (the_vm, program, SCM_EOL); | |
631 | } | |
632 | ||
17e90c5e | 633 | void |
07e56b27 | 634 | scm_bootstrap_vm (void) |
17e90c5e | 635 | { |
07e56b27 AW |
636 | static int strappage = 0; |
637 | ||
638 | if (strappage) | |
639 | return; | |
640 | ||
641 | scm_bootstrap_frames (); | |
642 | scm_bootstrap_instructions (); | |
643 | scm_bootstrap_objcodes (); | |
644 | scm_bootstrap_programs (); | |
a98cef7e | 645 | |
17e90c5e KN |
646 | scm_tc16_vm_cont = scm_make_smob_type ("vm-cont", 0); |
647 | scm_set_smob_mark (scm_tc16_vm_cont, vm_cont_mark); | |
648 | scm_set_smob_free (scm_tc16_vm_cont, vm_cont_free); | |
a98cef7e | 649 | |
17e90c5e KN |
650 | scm_tc16_vm = scm_make_smob_type ("vm", 0); |
651 | scm_set_smob_mark (scm_tc16_vm, vm_mark); | |
652 | scm_set_smob_free (scm_tc16_vm, vm_free); | |
653 | scm_set_smob_apply (scm_tc16_vm, scm_vm_apply, 1, 0, 1); | |
a98cef7e | 654 | |
499a4c07 KN |
655 | the_vm = scm_permanent_object (make_vm ()); |
656 | ||
07e56b27 AW |
657 | /* a bit heavy-handed, this */ |
658 | scm_variable_set_x (scm_c_lookup ("load-compiled"), | |
659 | scm_c_make_gsubr ("load-compiled/vm", 1, 0, 0, | |
660 | scm_load_compiled_with_vm)); | |
661 | ||
662 | strappage = 1; | |
663 | } | |
664 | ||
665 | void | |
666 | scm_init_vm (void) | |
667 | { | |
668 | scm_bootstrap_vm (); | |
669 | ||
17e90c5e | 670 | #ifndef SCM_MAGIC_SNARFER |
a98cef7e | 671 | #include "vm.x" |
17e90c5e | 672 | #endif |
a98cef7e | 673 | } |
17e90c5e KN |
674 | |
675 | /* | |
676 | Local Variables: | |
677 | c-file-style: "gnu" | |
678 | End: | |
679 | */ |