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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> |
83495480 | 47 | #include "vm-bootstrap.h" |
ac99cb0c | 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 | 67 | |
bfffd258 AW |
68 | struct scm_vm_cont { |
69 | scm_byte_t *ip; | |
70 | scm_t_ptrdiff sp; | |
71 | scm_t_ptrdiff fp; | |
72 | scm_t_ptrdiff stack_size; | |
73 | SCM *stack_base; | |
74 | }; | |
75 | ||
17e90c5e KN |
76 | |
77 | #define SCM_VM_CONT_P(OBJ) SCM_SMOB_PREDICATE (scm_tc16_vm_cont, OBJ) | |
bfffd258 AW |
78 | #define SCM_VM_CONT_DATA(CONT) ((struct scm_vm_cont *) SCM_CELL_WORD_1 (CONT)) |
79 | ||
80 | static SCM | |
81 | vm_cont_mark (SCM obj) | |
82 | { | |
7ff01700 | 83 | size_t size; |
bfffd258 AW |
84 | SCM *stack; |
85 | ||
86 | stack = SCM_VM_CONT_DATA (obj)->stack_base; | |
87 | size = SCM_VM_CONT_DATA (obj)->stack_size; | |
88 | ||
89 | /* we could be smarter about this. */ | |
7ff01700 | 90 | scm_mark_locations ((SCM_STACKITEM *) stack, size); |
bfffd258 AW |
91 | |
92 | return SCM_BOOL_F; | |
93 | } | |
94 | ||
95 | static scm_sizet | |
96 | vm_cont_free (SCM obj) | |
97 | { | |
98 | struct scm_vm_cont *p = SCM_VM_CONT_DATA (obj); | |
99 | ||
100 | scm_gc_free (p->stack_base, p->stack_size * sizeof (SCM), "stack-base"); | |
101 | scm_gc_free (p, sizeof (struct scm_vm), "vm"); | |
102 | ||
103 | return 0; | |
104 | } | |
a98cef7e KN |
105 | |
106 | static SCM | |
3d5ee0cd | 107 | capture_vm_cont (struct scm_vm *vp) |
a98cef7e | 108 | { |
bfffd258 AW |
109 | struct scm_vm_cont *p = scm_gc_malloc (sizeof (*p), "capture_vm_cont"); |
110 | p->stack_size = vp->sp - vp->stack_base + 1; | |
d8eeb67c LC |
111 | p->stack_base = scm_gc_malloc (p->stack_size * sizeof (SCM), |
112 | "capture_vm_cont"); | |
3d5ee0cd | 113 | p->ip = vp->ip; |
bfffd258 AW |
114 | p->sp = vp->sp - vp->stack_base; |
115 | p->fp = vp->fp - vp->stack_base; | |
116 | memcpy (p->stack_base, vp->stack_base, p->stack_size * sizeof (SCM)); | |
17e90c5e | 117 | SCM_RETURN_NEWSMOB (scm_tc16_vm_cont, p); |
a98cef7e KN |
118 | } |
119 | ||
120 | static void | |
3d5ee0cd | 121 | reinstate_vm_cont (struct scm_vm *vp, SCM cont) |
a98cef7e | 122 | { |
bfffd258 | 123 | struct scm_vm_cont *p = SCM_VM_CONT_DATA (cont); |
3d5ee0cd | 124 | if (vp->stack_size < p->stack_size) |
a98cef7e | 125 | { |
17e90c5e | 126 | /* puts ("FIXME: Need to expand"); */ |
a98cef7e KN |
127 | abort (); |
128 | } | |
3d5ee0cd | 129 | vp->ip = p->ip; |
bfffd258 AW |
130 | vp->sp = vp->stack_base + p->sp; |
131 | vp->fp = vp->stack_base + p->fp; | |
132 | memcpy (vp->stack_base, p->stack_base, p->stack_size * sizeof (SCM)); | |
133 | } | |
134 | ||
135 | /* In theory, a number of vm instances can be active in the call trace, and we | |
136 | only want to reify the continuations of those in the current continuation | |
137 | root. I don't see a nice way to do this -- ideally it would involve dynwinds, | |
138 | and previous values of the *the-vm* fluid within the current continuation | |
139 | root. But we don't have access to continuation roots in the dynwind stack. | |
140 | So, just punt for now -- take the current value of *the-vm*. | |
141 | ||
142 | While I'm on the topic, ideally we could avoid copying the C stack if the | |
143 | continuation root is inside VM code, and call/cc was invoked within that same | |
144 | call to vm_run; but that's currently not implemented. | |
145 | */ | |
146 | SCM | |
147 | scm_vm_capture_continuations (void) | |
148 | { | |
149 | SCM vm = scm_the_vm (); | |
150 | return scm_acons (vm, capture_vm_cont (SCM_VM_DATA (vm)), SCM_EOL); | |
151 | } | |
152 | ||
153 | void | |
154 | scm_vm_reinstate_continuations (SCM conts) | |
155 | { | |
156 | for (; conts != SCM_EOL; conts = SCM_CDR (conts)) | |
157 | reinstate_vm_cont (SCM_VM_DATA (SCM_CAAR (conts)), SCM_CDAR (conts)); | |
a98cef7e KN |
158 | } |
159 | ||
17d1b4bf AW |
160 | struct vm_unwind_data |
161 | { | |
162 | struct scm_vm *vp; | |
163 | SCM *sp; | |
164 | SCM *fp; | |
165 | SCM this_frame; | |
166 | }; | |
167 | ||
168 | static void | |
169 | vm_reset_stack (void *data) | |
170 | { | |
171 | struct vm_unwind_data *w = data; | |
172 | ||
173 | w->vp->sp = w->sp; | |
174 | w->vp->fp = w->fp; | |
175 | w->vp->this_frame = w->this_frame; | |
176 | } | |
177 | ||
17e90c5e KN |
178 | \f |
179 | /* | |
180 | * VM Internal functions | |
181 | */ | |
182 | ||
90b0be20 AW |
183 | static SCM sym_vm_run; |
184 | static SCM sym_vm_error; | |
185 | static SCM sym_debug; | |
17e90c5e KN |
186 | |
187 | static scm_byte_t * | |
188 | vm_fetch_length (scm_byte_t *ip, size_t *lenp) | |
a98cef7e | 189 | { |
4bfb26f5 | 190 | /* NOTE: format defined in system/vm/conv.scm */ |
17e90c5e KN |
191 | *lenp = *ip++; |
192 | if (*lenp < 254) | |
193 | return ip; | |
194 | else if (*lenp == 254) | |
46cd9a34 KN |
195 | { |
196 | int b1 = *ip++; | |
197 | int b2 = *ip++; | |
198 | *lenp = (b1 << 8) + b2; | |
199 | } | |
17e90c5e | 200 | else |
46cd9a34 KN |
201 | { |
202 | int b1 = *ip++; | |
203 | int b2 = *ip++; | |
204 | int b3 = *ip++; | |
205 | int b4 = *ip++; | |
206 | *lenp = (b1 << 24) + (b2 << 16) + (b3 << 8) + b4; | |
207 | } | |
17e90c5e | 208 | return ip; |
a98cef7e KN |
209 | } |
210 | ||
af988bbf | 211 | static SCM |
a6df585a | 212 | vm_heapify_frames_1 (struct scm_vm *vp, SCM *fp, SCM *sp, SCM **destp) |
af988bbf | 213 | { |
a6df585a | 214 | SCM frame; |
af988bbf | 215 | SCM *dl = SCM_FRAME_DYNAMIC_LINK (fp); |
fcd4901b | 216 | #if 0 |
a6df585a | 217 | SCM *src = SCM_FRAME_UPPER_ADDRESS (fp); |
fcd4901b | 218 | #endif |
a6df585a | 219 | SCM *dest = SCM_FRAME_LOWER_ADDRESS (fp); |
af988bbf KN |
220 | |
221 | if (!dl) | |
222 | { | |
223 | /* The top frame */ | |
af988bbf KN |
224 | frame = scm_c_make_heap_frame (fp); |
225 | fp = SCM_HEAP_FRAME_POINTER (frame); | |
226 | SCM_FRAME_HEAP_LINK (fp) = SCM_BOOL_T; | |
227 | } | |
228 | else | |
229 | { | |
a6df585a | 230 | /* Child frames */ |
af988bbf KN |
231 | SCM link = SCM_FRAME_HEAP_LINK (dl); |
232 | if (!SCM_FALSEP (link)) | |
a6df585a | 233 | link = SCM_FRAME_LOWER_ADDRESS (dl)[-1]; /* self link */ |
af988bbf | 234 | else |
a6df585a | 235 | link = vm_heapify_frames_1 (vp, dl, dest - 1, &dest); |
af988bbf KN |
236 | frame = scm_c_make_heap_frame (fp); |
237 | fp = SCM_HEAP_FRAME_POINTER (frame); | |
238 | SCM_FRAME_HEAP_LINK (fp) = link; | |
b6368dbb | 239 | SCM_FRAME_SET_DYNAMIC_LINK (fp, SCM_HEAP_FRAME_POINTER (link)); |
af988bbf KN |
240 | } |
241 | ||
17d1b4bf AW |
242 | /* Apparently the intention here is to be able to have a frame on the heap, |
243 | but data on the stack, so that you can push as much as you want on the | |
244 | stack; but I think that it's currently causing borkage with nonlocal exits | |
245 | and the unwind handler, which reinstates the sp and fp, but it's no longer | |
246 | pointing at a valid stack frame. So disable for now, we'll get back to | |
247 | this later. */ | |
248 | #if 0 | |
af988bbf | 249 | /* Move stack data */ |
a6df585a KN |
250 | for (; src <= sp; src++, dest++) |
251 | *dest = *src; | |
252 | *destp = dest; | |
17d1b4bf | 253 | #endif |
af988bbf KN |
254 | |
255 | return frame; | |
256 | } | |
257 | ||
258 | static SCM | |
259 | vm_heapify_frames (SCM vm) | |
260 | { | |
261 | struct scm_vm *vp = SCM_VM_DATA (vm); | |
262 | if (SCM_FALSEP (SCM_FRAME_HEAP_LINK (vp->fp))) | |
263 | { | |
a6df585a KN |
264 | SCM *dest; |
265 | vp->this_frame = vm_heapify_frames_1 (vp, vp->fp, vp->sp, &dest); | |
af988bbf | 266 | vp->fp = SCM_HEAP_FRAME_POINTER (vp->this_frame); |
a6df585a | 267 | vp->sp = dest - 1; |
af988bbf KN |
268 | } |
269 | return vp->this_frame; | |
270 | } | |
271 | ||
a98cef7e KN |
272 | \f |
273 | /* | |
274 | * VM | |
275 | */ | |
276 | ||
c0a25ecc | 277 | #define VM_DEFAULT_STACK_SIZE (16 * 1024) |
17e90c5e KN |
278 | |
279 | #define VM_REGULAR_ENGINE 0 | |
280 | #define VM_DEBUG_ENGINE 1 | |
281 | ||
282 | #if 0 | |
283 | #define VM_NAME vm_regular_engine | |
284 | #define VM_ENGINE VM_REGULAR_ENGINE | |
83495480 | 285 | #include "vm-engine.c" |
17e90c5e KN |
286 | #undef VM_NAME |
287 | #undef VM_ENGINE | |
288 | #endif | |
289 | ||
290 | #define VM_NAME vm_debug_engine | |
291 | #define VM_ENGINE VM_DEBUG_ENGINE | |
83495480 | 292 | #include "vm-engine.c" |
17e90c5e KN |
293 | #undef VM_NAME |
294 | #undef VM_ENGINE | |
295 | ||
f9e8c09d | 296 | scm_t_bits scm_tc16_vm; |
a98cef7e | 297 | |
7bbed518 | 298 | SCM scm_the_vm_fluid; |
499a4c07 | 299 | |
a98cef7e | 300 | static SCM |
17e90c5e KN |
301 | make_vm (void) |
302 | #define FUNC_NAME "make_vm" | |
a98cef7e | 303 | { |
17e90c5e | 304 | int i; |
d8eeb67c LC |
305 | struct scm_vm *vp = scm_gc_malloc (sizeof (struct scm_vm), "vm"); |
306 | ||
3d5ee0cd | 307 | vp->stack_size = VM_DEFAULT_STACK_SIZE; |
d8eeb67c LC |
308 | vp->stack_base = scm_gc_malloc (vp->stack_size * sizeof (SCM), |
309 | "stack-base"); | |
3616e9e9 KN |
310 | vp->stack_limit = vp->stack_base + vp->stack_size - 3; |
311 | vp->ip = NULL; | |
312 | vp->sp = vp->stack_base - 1; | |
313 | vp->fp = NULL; | |
3d5ee0cd KN |
314 | vp->time = 0; |
315 | vp->clock = 0; | |
316 | vp->options = SCM_EOL; | |
af988bbf | 317 | vp->this_frame = SCM_BOOL_F; |
ac99cb0c | 318 | vp->last_frame = SCM_BOOL_F; |
d0168f3d | 319 | vp->last_ip = NULL; |
17e90c5e | 320 | for (i = 0; i < SCM_VM_NUM_HOOKS; i++) |
3d5ee0cd KN |
321 | vp->hooks[i] = SCM_BOOL_F; |
322 | SCM_RETURN_NEWSMOB (scm_tc16_vm, vp); | |
a98cef7e | 323 | } |
17e90c5e | 324 | #undef FUNC_NAME |
a98cef7e KN |
325 | |
326 | static SCM | |
17e90c5e | 327 | vm_mark (SCM obj) |
a98cef7e | 328 | { |
17e90c5e | 329 | int i; |
3d5ee0cd | 330 | struct scm_vm *vp = SCM_VM_DATA (obj); |
17e90c5e | 331 | |
af988bbf KN |
332 | /* mark the stack conservatively */ |
333 | scm_mark_locations ((SCM_STACKITEM *) vp->stack_base, | |
877ffa3f | 334 | sizeof (SCM)*(vp->sp + 1 - vp->stack_base)); |
a98cef7e | 335 | |
af988bbf | 336 | /* mark other objects */ |
17e90c5e | 337 | for (i = 0; i < SCM_VM_NUM_HOOKS; i++) |
3d5ee0cd | 338 | scm_gc_mark (vp->hooks[i]); |
af988bbf | 339 | scm_gc_mark (vp->this_frame); |
ac99cb0c | 340 | scm_gc_mark (vp->last_frame); |
3d5ee0cd | 341 | return vp->options; |
a98cef7e KN |
342 | } |
343 | ||
17e90c5e KN |
344 | static scm_sizet |
345 | vm_free (SCM obj) | |
346 | { | |
3d5ee0cd | 347 | struct scm_vm *vp = SCM_VM_DATA (obj); |
d8eeb67c LC |
348 | |
349 | scm_gc_free (vp->stack_base, vp->stack_size * sizeof (SCM), | |
350 | "stack-base"); | |
351 | scm_gc_free (vp, sizeof (struct scm_vm), "vm"); | |
352 | ||
353 | return 0; | |
17e90c5e KN |
354 | } |
355 | ||
17e90c5e KN |
356 | SCM |
357 | scm_vm_apply (SCM vm, SCM program, SCM args) | |
358 | #define FUNC_NAME "scm_vm_apply" | |
a98cef7e | 359 | { |
17e90c5e | 360 | SCM_VALIDATE_PROGRAM (1, program); |
41f248a8 | 361 | return vm_run (vm, program, args); |
a98cef7e | 362 | } |
17e90c5e | 363 | #undef FUNC_NAME |
a98cef7e KN |
364 | |
365 | /* Scheme interface */ | |
366 | ||
367 | SCM_DEFINE (scm_vm_version, "vm-version", 0, 0, 0, | |
17e90c5e KN |
368 | (void), |
369 | "") | |
a98cef7e KN |
370 | #define FUNC_NAME s_scm_vm_version |
371 | { | |
d3518113 | 372 | return scm_from_locale_string (PACKAGE_VERSION); |
a98cef7e KN |
373 | } |
374 | #undef FUNC_NAME | |
375 | ||
499a4c07 | 376 | SCM_DEFINE (scm_the_vm, "the-vm", 0, 0, 0, |
fcd4901b | 377 | (void), |
499a4c07 KN |
378 | "") |
379 | #define FUNC_NAME s_scm_the_vm | |
380 | { | |
f63ea2ce AW |
381 | SCM ret; |
382 | ||
383 | if (SCM_NFALSEP ((ret = scm_fluid_ref (scm_the_vm_fluid)))) | |
384 | return ret; | |
385 | ||
386 | ret = make_vm (); | |
387 | scm_fluid_set_x (scm_the_vm_fluid, ret); | |
388 | return ret; | |
499a4c07 KN |
389 | } |
390 | #undef FUNC_NAME | |
391 | ||
392 | ||
a98cef7e KN |
393 | SCM_DEFINE (scm_vm_p, "vm?", 1, 0, 0, |
394 | (SCM obj), | |
17e90c5e | 395 | "") |
a98cef7e KN |
396 | #define FUNC_NAME s_scm_vm_p |
397 | { | |
398 | return SCM_BOOL (SCM_VM_P (obj)); | |
399 | } | |
400 | #undef FUNC_NAME | |
401 | ||
402 | SCM_DEFINE (scm_make_vm, "make-vm", 0, 0, 0, | |
17e90c5e KN |
403 | (void), |
404 | "") | |
405 | #define FUNC_NAME s_scm_make_vm, | |
a98cef7e | 406 | { |
17e90c5e | 407 | return make_vm (); |
a98cef7e KN |
408 | } |
409 | #undef FUNC_NAME | |
410 | ||
17e90c5e | 411 | SCM_DEFINE (scm_vm_ip, "vm:ip", 1, 0, 0, |
a98cef7e | 412 | (SCM vm), |
17e90c5e KN |
413 | "") |
414 | #define FUNC_NAME s_scm_vm_ip | |
a98cef7e KN |
415 | { |
416 | SCM_VALIDATE_VM (1, vm); | |
f41cb00c | 417 | return scm_from_ulong ((unsigned long) SCM_VM_DATA (vm)->ip); |
a98cef7e KN |
418 | } |
419 | #undef FUNC_NAME | |
420 | ||
421 | SCM_DEFINE (scm_vm_sp, "vm:sp", 1, 0, 0, | |
422 | (SCM vm), | |
17e90c5e | 423 | "") |
a98cef7e KN |
424 | #define FUNC_NAME s_scm_vm_sp |
425 | { | |
426 | SCM_VALIDATE_VM (1, vm); | |
f41cb00c | 427 | return scm_from_ulong ((unsigned long) SCM_VM_DATA (vm)->sp); |
a98cef7e KN |
428 | } |
429 | #undef FUNC_NAME | |
430 | ||
431 | SCM_DEFINE (scm_vm_fp, "vm:fp", 1, 0, 0, | |
432 | (SCM vm), | |
17e90c5e | 433 | "") |
a98cef7e KN |
434 | #define FUNC_NAME s_scm_vm_fp |
435 | { | |
436 | SCM_VALIDATE_VM (1, vm); | |
f41cb00c | 437 | return scm_from_ulong ((unsigned long) SCM_VM_DATA (vm)->fp); |
a98cef7e KN |
438 | } |
439 | #undef FUNC_NAME | |
440 | ||
17e90c5e KN |
441 | #define VM_DEFINE_HOOK(n) \ |
442 | { \ | |
3d5ee0cd | 443 | struct scm_vm *vp; \ |
17e90c5e | 444 | SCM_VALIDATE_VM (1, vm); \ |
3d5ee0cd KN |
445 | vp = SCM_VM_DATA (vm); \ |
446 | if (SCM_FALSEP (vp->hooks[n])) \ | |
238e7a11 | 447 | vp->hooks[n] = scm_make_hook (SCM_I_MAKINUM (1)); \ |
3d5ee0cd | 448 | return vp->hooks[n]; \ |
17e90c5e KN |
449 | } |
450 | ||
451 | SCM_DEFINE (scm_vm_boot_hook, "vm-boot-hook", 1, 0, 0, | |
a98cef7e | 452 | (SCM vm), |
17e90c5e KN |
453 | "") |
454 | #define FUNC_NAME s_scm_vm_boot_hook | |
a98cef7e | 455 | { |
17e90c5e | 456 | VM_DEFINE_HOOK (SCM_VM_BOOT_HOOK); |
a98cef7e KN |
457 | } |
458 | #undef FUNC_NAME | |
459 | ||
17e90c5e KN |
460 | SCM_DEFINE (scm_vm_halt_hook, "vm-halt-hook", 1, 0, 0, |
461 | (SCM vm), | |
462 | "") | |
463 | #define FUNC_NAME s_scm_vm_halt_hook | |
a98cef7e | 464 | { |
17e90c5e | 465 | VM_DEFINE_HOOK (SCM_VM_HALT_HOOK); |
a98cef7e KN |
466 | } |
467 | #undef FUNC_NAME | |
468 | ||
17e90c5e | 469 | SCM_DEFINE (scm_vm_next_hook, "vm-next-hook", 1, 0, 0, |
a98cef7e | 470 | (SCM vm), |
17e90c5e KN |
471 | "") |
472 | #define FUNC_NAME s_scm_vm_next_hook | |
a98cef7e | 473 | { |
17e90c5e | 474 | VM_DEFINE_HOOK (SCM_VM_NEXT_HOOK); |
a98cef7e KN |
475 | } |
476 | #undef FUNC_NAME | |
477 | ||
7a0d0cee KN |
478 | SCM_DEFINE (scm_vm_break_hook, "vm-break-hook", 1, 0, 0, |
479 | (SCM vm), | |
480 | "") | |
481 | #define FUNC_NAME s_scm_vm_break_hook | |
482 | { | |
483 | VM_DEFINE_HOOK (SCM_VM_BREAK_HOOK); | |
484 | } | |
485 | #undef FUNC_NAME | |
486 | ||
17e90c5e KN |
487 | SCM_DEFINE (scm_vm_enter_hook, "vm-enter-hook", 1, 0, 0, |
488 | (SCM vm), | |
489 | "") | |
490 | #define FUNC_NAME s_scm_vm_enter_hook | |
a98cef7e | 491 | { |
17e90c5e | 492 | VM_DEFINE_HOOK (SCM_VM_ENTER_HOOK); |
a98cef7e KN |
493 | } |
494 | #undef FUNC_NAME | |
495 | ||
17e90c5e KN |
496 | SCM_DEFINE (scm_vm_apply_hook, "vm-apply-hook", 1, 0, 0, |
497 | (SCM vm), | |
498 | "") | |
499 | #define FUNC_NAME s_scm_vm_apply_hook | |
a98cef7e | 500 | { |
17e90c5e | 501 | VM_DEFINE_HOOK (SCM_VM_APPLY_HOOK); |
a98cef7e KN |
502 | } |
503 | #undef FUNC_NAME | |
504 | ||
17e90c5e | 505 | SCM_DEFINE (scm_vm_exit_hook, "vm-exit-hook", 1, 0, 0, |
a98cef7e | 506 | (SCM vm), |
17e90c5e KN |
507 | "") |
508 | #define FUNC_NAME s_scm_vm_exit_hook | |
a98cef7e | 509 | { |
17e90c5e | 510 | VM_DEFINE_HOOK (SCM_VM_EXIT_HOOK); |
a98cef7e KN |
511 | } |
512 | #undef FUNC_NAME | |
513 | ||
17e90c5e | 514 | SCM_DEFINE (scm_vm_return_hook, "vm-return-hook", 1, 0, 0, |
a98cef7e | 515 | (SCM vm), |
17e90c5e KN |
516 | "") |
517 | #define FUNC_NAME s_scm_vm_return_hook | |
a98cef7e | 518 | { |
17e90c5e | 519 | VM_DEFINE_HOOK (SCM_VM_RETURN_HOOK); |
a98cef7e KN |
520 | } |
521 | #undef FUNC_NAME | |
522 | ||
17e90c5e KN |
523 | SCM_DEFINE (scm_vm_option, "vm-option", 2, 0, 0, |
524 | (SCM vm, SCM key), | |
525 | "") | |
526 | #define FUNC_NAME s_scm_vm_option | |
a98cef7e KN |
527 | { |
528 | SCM_VALIDATE_VM (1, vm); | |
17e90c5e | 529 | return scm_assq_ref (SCM_VM_DATA (vm)->options, key); |
a98cef7e KN |
530 | } |
531 | #undef FUNC_NAME | |
532 | ||
17e90c5e KN |
533 | SCM_DEFINE (scm_set_vm_option_x, "set-vm-option!", 3, 0, 0, |
534 | (SCM vm, SCM key, SCM val), | |
535 | "") | |
536 | #define FUNC_NAME s_scm_set_vm_option_x | |
a98cef7e KN |
537 | { |
538 | SCM_VALIDATE_VM (1, vm); | |
17e90c5e KN |
539 | SCM_VM_DATA (vm)->options |
540 | = scm_assq_set_x (SCM_VM_DATA (vm)->options, key, val); | |
541 | return SCM_UNSPECIFIED; | |
a98cef7e KN |
542 | } |
543 | #undef FUNC_NAME | |
544 | ||
17e90c5e | 545 | SCM_DEFINE (scm_vm_stats, "vm-stats", 1, 0, 0, |
a98cef7e | 546 | (SCM vm), |
17e90c5e KN |
547 | "") |
548 | #define FUNC_NAME s_scm_vm_stats | |
a98cef7e | 549 | { |
17e90c5e KN |
550 | SCM stats; |
551 | ||
a98cef7e | 552 | SCM_VALIDATE_VM (1, vm); |
17e90c5e | 553 | |
2d80426a LC |
554 | stats = scm_make_vector (SCM_I_MAKINUM (2), SCM_UNSPECIFIED); |
555 | scm_vector_set_x (stats, SCM_I_MAKINUM (0), | |
f9e8c09d | 556 | scm_from_ulong (SCM_VM_DATA (vm)->time)); |
2d80426a | 557 | scm_vector_set_x (stats, SCM_I_MAKINUM (1), |
f9e8c09d | 558 | scm_from_ulong (SCM_VM_DATA (vm)->clock)); |
17e90c5e KN |
559 | |
560 | return stats; | |
a98cef7e KN |
561 | } |
562 | #undef FUNC_NAME | |
563 | ||
17e90c5e KN |
564 | #define VM_CHECK_RUNNING(vm) \ |
565 | if (!SCM_VM_DATA (vm)->ip) \ | |
566 | SCM_MISC_ERROR ("Not running", SCM_LIST1 (vm)) | |
567 | ||
af988bbf | 568 | SCM_DEFINE (scm_vm_this_frame, "vm-this-frame", 1, 0, 0, |
a98cef7e | 569 | (SCM vm), |
17e90c5e | 570 | "") |
af988bbf | 571 | #define FUNC_NAME s_scm_vm_this_frame |
a98cef7e KN |
572 | { |
573 | SCM_VALIDATE_VM (1, vm); | |
af988bbf | 574 | return SCM_VM_DATA (vm)->this_frame; |
ac99cb0c KN |
575 | } |
576 | #undef FUNC_NAME | |
577 | ||
578 | SCM_DEFINE (scm_vm_last_frame, "vm-last-frame", 1, 0, 0, | |
579 | (SCM vm), | |
580 | "") | |
581 | #define FUNC_NAME s_scm_vm_last_frame | |
582 | { | |
583 | SCM_VALIDATE_VM (1, vm); | |
584 | return SCM_VM_DATA (vm)->last_frame; | |
a98cef7e KN |
585 | } |
586 | #undef FUNC_NAME | |
587 | ||
d0168f3d AW |
588 | SCM_DEFINE (scm_vm_last_ip, "vm:last-ip", 1, 0, 0, |
589 | (SCM vm), | |
590 | "") | |
591 | #define FUNC_NAME s_scm_vm_last_ip | |
592 | { | |
593 | SCM_VALIDATE_VM (1, vm); | |
594 | return scm_from_ulong ((unsigned long) SCM_VM_DATA (vm)->last_ip); | |
595 | } | |
596 | #undef FUNC_NAME | |
597 | ||
68a2e18a AW |
598 | SCM_DEFINE (scm_vm_save_stack, "vm-save-stack", 1, 0, 0, |
599 | (SCM vm), | |
600 | "") | |
601 | #define FUNC_NAME s_scm_vm_save_stack | |
602 | { | |
17d1b4bf AW |
603 | struct scm_vm *vp; |
604 | SCM *dest; | |
68a2e18a | 605 | SCM_VALIDATE_VM (1, vm); |
17d1b4bf | 606 | vp = SCM_VM_DATA (vm); |
7e4760e4 AW |
607 | |
608 | if (vp->fp) | |
609 | { | |
610 | vp->last_frame = vm_heapify_frames_1 (vp, vp->fp, vp->sp, &dest); | |
611 | vp->last_ip = vp->ip; | |
612 | } | |
613 | else | |
614 | { | |
615 | vp->last_frame = SCM_BOOL_F; | |
616 | } | |
617 | ||
618 | ||
17d1b4bf | 619 | return vp->last_frame; |
68a2e18a AW |
620 | } |
621 | #undef FUNC_NAME | |
622 | ||
17e90c5e KN |
623 | SCM_DEFINE (scm_vm_fetch_code, "vm-fetch-code", 1, 0, 0, |
624 | (SCM vm), | |
625 | "") | |
626 | #define FUNC_NAME s_scm_vm_fetch_code | |
627 | { | |
628 | int i; | |
629 | SCM list; | |
630 | scm_byte_t *ip; | |
631 | struct scm_instruction *p; | |
a98cef7e | 632 | |
17e90c5e KN |
633 | SCM_VALIDATE_VM (1, vm); |
634 | VM_CHECK_RUNNING (vm); | |
a98cef7e | 635 | |
17e90c5e KN |
636 | ip = SCM_VM_DATA (vm)->ip; |
637 | p = SCM_INSTRUCTION (*ip); | |
a98cef7e | 638 | |
17e90c5e KN |
639 | list = SCM_LIST1 (scm_str2symbol (p->name)); |
640 | for (i = 1; i <= p->len; i++) | |
2d80426a | 641 | list = scm_cons (SCM_I_MAKINUM (ip[i]), list); |
17e90c5e KN |
642 | return scm_reverse_x (list, SCM_EOL); |
643 | } | |
644 | #undef FUNC_NAME | |
645 | ||
646 | SCM_DEFINE (scm_vm_fetch_stack, "vm-fetch-stack", 1, 0, 0, | |
647 | (SCM vm), | |
648 | "") | |
649 | #define FUNC_NAME s_scm_vm_fetch_stack | |
a98cef7e | 650 | { |
3616e9e9 KN |
651 | SCM *sp; |
652 | SCM ls = SCM_EOL; | |
653 | struct scm_vm *vp; | |
a98cef7e KN |
654 | |
655 | SCM_VALIDATE_VM (1, vm); | |
17e90c5e | 656 | VM_CHECK_RUNNING (vm); |
a98cef7e | 657 | |
3616e9e9 | 658 | vp = SCM_VM_DATA (vm); |
af988bbf | 659 | for (sp = vp->stack_base; sp <= vp->sp; sp++) |
3616e9e9 KN |
660 | ls = scm_cons (*sp, ls); |
661 | return ls; | |
a98cef7e KN |
662 | } |
663 | #undef FUNC_NAME | |
664 | ||
665 | \f | |
666 | /* | |
17e90c5e | 667 | * Initialize |
a98cef7e KN |
668 | */ |
669 | ||
07e56b27 AW |
670 | SCM scm_load_compiled_with_vm (SCM file) |
671 | { | |
672 | SCM program = scm_objcode_to_program (scm_load_objcode (file)); | |
673 | ||
7bbed518 | 674 | return vm_run (scm_the_vm (), program, SCM_EOL); |
07e56b27 AW |
675 | } |
676 | ||
17e90c5e | 677 | void |
07e56b27 | 678 | scm_bootstrap_vm (void) |
17e90c5e | 679 | { |
07e56b27 AW |
680 | static int strappage = 0; |
681 | ||
682 | if (strappage) | |
683 | return; | |
684 | ||
685 | scm_bootstrap_frames (); | |
686 | scm_bootstrap_instructions (); | |
687 | scm_bootstrap_objcodes (); | |
688 | scm_bootstrap_programs (); | |
a98cef7e | 689 | |
17e90c5e KN |
690 | scm_tc16_vm_cont = scm_make_smob_type ("vm-cont", 0); |
691 | scm_set_smob_mark (scm_tc16_vm_cont, vm_cont_mark); | |
692 | scm_set_smob_free (scm_tc16_vm_cont, vm_cont_free); | |
a98cef7e | 693 | |
17e90c5e KN |
694 | scm_tc16_vm = scm_make_smob_type ("vm", 0); |
695 | scm_set_smob_mark (scm_tc16_vm, vm_mark); | |
696 | scm_set_smob_free (scm_tc16_vm, vm_free); | |
697 | scm_set_smob_apply (scm_tc16_vm, scm_vm_apply, 1, 0, 1); | |
a98cef7e | 698 | |
7bbed518 AW |
699 | scm_the_vm_fluid = scm_permanent_object (scm_make_fluid ()); |
700 | scm_fluid_set_x (scm_the_vm_fluid, make_vm ()); | |
701 | scm_c_define ("*the-vm*", scm_the_vm_fluid); | |
499a4c07 | 702 | |
83495480 AW |
703 | scm_c_define ("load-compiled", |
704 | scm_c_make_gsubr ("load-compiled/vm", 1, 0, 0, | |
705 | scm_load_compiled_with_vm)); | |
07e56b27 | 706 | |
90b0be20 AW |
707 | sym_vm_run = scm_permanent_object (scm_from_locale_symbol ("vm-run")); |
708 | sym_vm_error = scm_permanent_object (scm_from_locale_symbol ("vm-error")); | |
709 | sym_debug = scm_permanent_object (scm_from_locale_symbol ("debug")); | |
710 | ||
07e56b27 AW |
711 | strappage = 1; |
712 | } | |
713 | ||
714 | void | |
715 | scm_init_vm (void) | |
716 | { | |
717 | scm_bootstrap_vm (); | |
718 | ||
17e90c5e | 719 | #ifndef SCM_MAGIC_SNARFER |
a98cef7e | 720 | #include "vm.x" |
17e90c5e | 721 | #endif |
a98cef7e | 722 | } |
17e90c5e KN |
723 | |
724 | /* | |
725 | Local Variables: | |
726 | c-file-style: "gnu" | |
727 | End: | |
728 | */ |