Commit | Line | Data |
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aab9d46c | 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 | |
13c47753 AW |
19 | #if HAVE_CONFIG_H |
20 | # include <config.h> | |
21 | #endif | |
22 | ||
da8b4747 | 23 | #include <stdlib.h> |
6d14383e | 24 | #include <alloca.h> |
daccfef4 | 25 | #include <alignof.h> |
17e90c5e | 26 | #include <string.h> |
e78d4bf9 | 27 | #include <stdint.h> |
e3eb628d | 28 | |
1c44468d | 29 | #include "libguile/bdw-gc.h" |
e3eb628d LC |
30 | #include <gc/gc_mark.h> |
31 | ||
560b9c25 | 32 | #include "_scm.h" |
adaf86ec | 33 | #include "control.h" |
ac99cb0c | 34 | #include "frames.h" |
17e90c5e | 35 | #include "instructions.h" |
4cbc95f1 | 36 | #include "loader.h" |
ac99cb0c | 37 | #include "programs.h" |
a98cef7e | 38 | #include "vm.h" |
486013d6 | 39 | #include "vm-builtins.h" |
a98cef7e | 40 | |
aab9d46c SIT |
41 | #include "private-gc.h" /* scm_getenv_int */ |
42 | ||
97b18a66 | 43 | static int vm_default_engine = SCM_VM_REGULAR_ENGINE; |
ea9f4f4b AW |
44 | |
45 | /* Unfortunately we can't snarf these: snarfed things are only loaded up from | |
46 | (system vm vm), which might not be loaded before an error happens. */ | |
47 | static SCM sym_vm_run; | |
48 | static SCM sym_vm_error; | |
49 | static SCM sym_keyword_argument_error; | |
50 | static SCM sym_regular; | |
51 | static SCM sym_debug; | |
a98cef7e | 52 | |
11ea1aba AW |
53 | /* The VM has a number of internal assertions that shouldn't normally be |
54 | necessary, but might be if you think you found a bug in the VM. */ | |
55 | #define VM_ENABLE_ASSERTIONS | |
56 | ||
53e28ed9 AW |
57 | /* #define VM_ENABLE_PARANOID_ASSERTIONS */ |
58 | ||
e3eb628d LC |
59 | /* When defined, arrange so that the GC doesn't scan the VM stack beyond its |
60 | current SP. This should help avoid excess data retention. See | |
61 | http://thread.gmane.org/gmane.comp.programming.garbage-collection.boehmgc/3001 | |
62 | for a discussion. */ | |
63 | #define VM_ENABLE_PRECISE_STACK_GC_SCAN | |
64 | ||
f1046e6b LC |
65 | /* Size in SCM objects of the stack reserve. The reserve is used to run |
66 | exception handling code in case of a VM stack overflow. */ | |
67 | #define VM_STACK_RESERVE_SIZE 512 | |
68 | ||
e3eb628d | 69 | |
a98cef7e | 70 | \f |
a98cef7e KN |
71 | /* |
72 | * VM Continuation | |
73 | */ | |
74 | ||
6f3b0cc2 AW |
75 | void |
76 | scm_i_vm_cont_print (SCM x, SCM port, scm_print_state *pstate) | |
77 | { | |
0607ebbf | 78 | scm_puts_unlocked ("#<vm-continuation ", port); |
6f3b0cc2 | 79 | scm_uintprint (SCM_UNPACK (x), 16, port); |
0607ebbf | 80 | scm_puts_unlocked (">", port); |
6f3b0cc2 | 81 | } |
17e90c5e | 82 | |
d8873dfe AW |
83 | /* In theory, a number of vm instances can be active in the call trace, and we |
84 | only want to reify the continuations of those in the current continuation | |
85 | root. I don't see a nice way to do this -- ideally it would involve dynwinds, | |
86 | and previous values of the *the-vm* fluid within the current continuation | |
87 | root. But we don't have access to continuation roots in the dynwind stack. | |
88 | So, just punt for now, we just capture the continuation for the current VM. | |
89 | ||
90 | While I'm on the topic, ideally we could avoid copying the C stack if the | |
91 | continuation root is inside VM code, and call/cc was invoked within that same | |
92 | call to vm_run; but that's currently not implemented. | |
93 | */ | |
cee1d22c | 94 | SCM |
9121d9f1 | 95 | scm_i_vm_capture_stack (SCM *stack_base, SCM *fp, SCM *sp, scm_t_uint32 *ra, |
840ec334 | 96 | scm_t_dynstack *dynstack, scm_t_uint32 flags) |
a98cef7e | 97 | { |
d8873dfe AW |
98 | struct scm_vm_cont *p; |
99 | ||
100 | p = scm_gc_malloc (sizeof (*p), "capture_vm_cont"); | |
101 | p->stack_size = sp - stack_base + 1; | |
d8eeb67c LC |
102 | p->stack_base = scm_gc_malloc (p->stack_size * sizeof (SCM), |
103 | "capture_vm_cont"); | |
d8873dfe | 104 | p->ra = ra; |
d8873dfe AW |
105 | p->sp = sp; |
106 | p->fp = fp; | |
107 | memcpy (p->stack_base, stack_base, (sp + 1 - stack_base) * sizeof (SCM)); | |
108 | p->reloc = p->stack_base - stack_base; | |
9ede013f | 109 | p->dynstack = dynstack; |
cee1d22c | 110 | p->flags = flags; |
6f3b0cc2 | 111 | return scm_cell (scm_tc7_vm_cont, (scm_t_bits)p); |
a98cef7e KN |
112 | } |
113 | ||
114 | static void | |
d8873dfe | 115 | vm_return_to_continuation (SCM vm, SCM cont, size_t n, SCM *argv) |
a98cef7e | 116 | { |
d8873dfe AW |
117 | struct scm_vm *vp; |
118 | struct scm_vm_cont *cp; | |
119 | SCM *argv_copy; | |
120 | ||
121 | argv_copy = alloca (n * sizeof(SCM)); | |
122 | memcpy (argv_copy, argv, n * sizeof(SCM)); | |
123 | ||
124 | vp = SCM_VM_DATA (vm); | |
125 | cp = SCM_VM_CONT_DATA (cont); | |
126 | ||
f8085163 | 127 | if (vp->stack_size < cp->stack_size + n + 3) |
29366989 AW |
128 | scm_misc_error ("vm-engine", "not enough space to reinstate continuation", |
129 | scm_list_2 (vm, cont)); | |
130 | ||
d8873dfe AW |
131 | vp->sp = cp->sp; |
132 | vp->fp = cp->fp; | |
133 | memcpy (vp->stack_base, cp->stack_base, cp->stack_size * sizeof (SCM)); | |
bfffd258 | 134 | |
03f16599 AW |
135 | { |
136 | size_t i; | |
137 | ||
138 | /* Push on an empty frame, as the continuation expects. */ | |
f8085163 | 139 | for (i = 0; i < 3; i++) |
03f16599 AW |
140 | { |
141 | vp->sp++; | |
142 | *vp->sp = SCM_BOOL_F; | |
143 | } | |
144 | ||
145 | /* Push the return values. */ | |
146 | for (i = 0; i < n; i++) | |
147 | { | |
148 | vp->sp++; | |
149 | *vp->sp = argv_copy[i]; | |
150 | } | |
840ec334 | 151 | vp->ip = cp->ra; |
03f16599 | 152 | } |
d8873dfe | 153 | } |
bfffd258 | 154 | |
bfffd258 | 155 | SCM |
9ede013f | 156 | scm_i_capture_current_stack (void) |
bfffd258 | 157 | { |
9ede013f AW |
158 | scm_i_thread *thread; |
159 | SCM vm; | |
160 | struct scm_vm *vp; | |
161 | ||
162 | thread = SCM_I_CURRENT_THREAD; | |
163 | vm = scm_the_vm (); | |
164 | vp = SCM_VM_DATA (vm); | |
165 | ||
840ec334 | 166 | return scm_i_vm_capture_stack (vp->stack_base, vp->fp, vp->sp, vp->ip, |
9ede013f AW |
167 | scm_dynstack_capture_all (&thread->dynstack), |
168 | 0); | |
a98cef7e KN |
169 | } |
170 | ||
59f85eed AW |
171 | static void vm_dispatch_apply_hook (struct scm_vm *vp) SCM_NOINLINE; |
172 | static void vm_dispatch_push_continuation_hook (struct scm_vm *vp) SCM_NOINLINE; | |
173 | static void vm_dispatch_pop_continuation_hook (struct scm_vm *vp, SCM *old_fp) SCM_NOINLINE; | |
174 | static void vm_dispatch_next_hook (struct scm_vm *vp) SCM_NOINLINE; | |
175 | static void vm_dispatch_abort_hook (struct scm_vm *vp) SCM_NOINLINE; | |
176 | static void vm_dispatch_restore_continuation_hook (struct scm_vm *vp) SCM_NOINLINE; | |
c850a0ff | 177 | |
b1b942b7 | 178 | static void |
59f85eed | 179 | vm_dispatch_hook (struct scm_vm *vp, int hook_num, SCM *argv, int n) |
b1b942b7 | 180 | { |
7656f194 | 181 | SCM hook; |
b3567435 | 182 | struct scm_frame c_frame; |
8e4c60ff | 183 | scm_t_cell *frame; |
893fb8d0 | 184 | int saved_trace_level; |
b1b942b7 | 185 | |
7656f194 | 186 | hook = vp->hooks[hook_num]; |
b1b942b7 | 187 | |
7656f194 AW |
188 | if (SCM_LIKELY (scm_is_false (hook)) |
189 | || scm_is_null (SCM_HOOK_PROCEDURES (hook))) | |
190 | return; | |
b3567435 | 191 | |
893fb8d0 AW |
192 | saved_trace_level = vp->trace_level; |
193 | vp->trace_level = 0; | |
b3567435 LC |
194 | |
195 | /* Allocate a frame object on the stack. This is more efficient than calling | |
196 | `scm_c_make_frame ()' to allocate on the heap, but it forces hooks to not | |
197 | capture frame objects. | |
198 | ||
199 | At the same time, procedures such as `frame-procedure' make sense only | |
200 | while the stack frame represented by the frame object is visible, so it | |
201 | seems reasonable to limit the lifetime of frame objects. */ | |
202 | ||
5515edc5 | 203 | c_frame.stack_holder = vp; |
89b235af AW |
204 | c_frame.fp_offset = vp->fp - vp->stack_base; |
205 | c_frame.sp_offset = vp->sp - vp->stack_base; | |
b3567435 | 206 | c_frame.ip = vp->ip; |
8e4c60ff LC |
207 | |
208 | /* Arrange for FRAME to be 8-byte aligned, like any other cell. */ | |
209 | frame = alloca (sizeof (*frame) + 8); | |
210 | frame = (scm_t_cell *) ROUND_UP ((scm_t_uintptr) frame, 8UL); | |
211 | ||
050a40db | 212 | frame->word_0 = SCM_PACK (scm_tc7_frame | (SCM_VM_FRAME_KIND_VM << 8)); |
21041372 | 213 | frame->word_1 = SCM_PACK_POINTER (&c_frame); |
b3567435 | 214 | |
c850a0ff AW |
215 | if (n == 0) |
216 | { | |
217 | SCM args[1]; | |
218 | ||
219 | args[0] = SCM_PACK_POINTER (frame); | |
220 | scm_c_run_hookn (hook, args, 1); | |
221 | } | |
222 | else if (n == 1) | |
223 | { | |
224 | SCM args[2]; | |
225 | ||
226 | args[0] = SCM_PACK_POINTER (frame); | |
227 | args[1] = argv[0]; | |
228 | scm_c_run_hookn (hook, args, 2); | |
229 | } | |
230 | else | |
231 | { | |
232 | SCM args = SCM_EOL; | |
233 | ||
234 | while (n--) | |
235 | args = scm_cons (argv[n], args); | |
236 | scm_c_run_hook (hook, scm_cons (SCM_PACK_POINTER (frame), args)); | |
237 | } | |
b3567435 | 238 | |
893fb8d0 | 239 | vp->trace_level = saved_trace_level; |
b1b942b7 AW |
240 | } |
241 | ||
ea0cd17d | 242 | static void |
59f85eed | 243 | vm_dispatch_apply_hook (struct scm_vm *vp) |
ea0cd17d | 244 | { |
59f85eed | 245 | return vm_dispatch_hook (vp, SCM_VM_APPLY_HOOK, NULL, 0); |
ea0cd17d | 246 | } |
59f85eed | 247 | static void vm_dispatch_push_continuation_hook (struct scm_vm *vp) |
ea0cd17d | 248 | { |
59f85eed | 249 | return vm_dispatch_hook (vp, SCM_VM_PUSH_CONTINUATION_HOOK, NULL, 0); |
ea0cd17d | 250 | } |
59f85eed | 251 | static void vm_dispatch_pop_continuation_hook (struct scm_vm *vp, SCM *old_fp) |
ea0cd17d | 252 | { |
59f85eed | 253 | return vm_dispatch_hook (vp, SCM_VM_POP_CONTINUATION_HOOK, |
ea0cd17d AW |
254 | &SCM_FRAME_LOCAL (old_fp, 1), |
255 | SCM_FRAME_NUM_LOCALS (old_fp, vp->sp) - 1); | |
256 | } | |
59f85eed | 257 | static void vm_dispatch_next_hook (struct scm_vm *vp) |
ea0cd17d | 258 | { |
59f85eed | 259 | return vm_dispatch_hook (vp, SCM_VM_NEXT_HOOK, NULL, 0); |
ea0cd17d | 260 | } |
59f85eed | 261 | static void vm_dispatch_abort_hook (struct scm_vm *vp) |
ea0cd17d | 262 | { |
59f85eed | 263 | return vm_dispatch_hook (vp, SCM_VM_ABORT_CONTINUATION_HOOK, |
ea0cd17d AW |
264 | &SCM_FRAME_LOCAL (vp->fp, 1), |
265 | SCM_FRAME_NUM_LOCALS (vp->fp, vp->sp) - 1); | |
266 | } | |
59f85eed | 267 | static void vm_dispatch_restore_continuation_hook (struct scm_vm *vp) |
ea0cd17d | 268 | { |
59f85eed | 269 | return vm_dispatch_hook (vp, SCM_VM_RESTORE_CONTINUATION_HOOK, NULL, 0); |
ea0cd17d AW |
270 | } |
271 | ||
4f66bcde | 272 | static void |
99511cd0 AW |
273 | vm_abort (SCM vm, SCM tag, size_t nstack, SCM *stack_args, SCM tail, SCM *sp, |
274 | scm_i_jmp_buf *current_registers) SCM_NORETURN; | |
9d381ba4 AW |
275 | |
276 | static void | |
99511cd0 AW |
277 | vm_abort (SCM vm, SCM tag, size_t nstack, SCM *stack_args, SCM tail, SCM *sp, |
278 | scm_i_jmp_buf *current_registers) | |
4f66bcde | 279 | { |
eaefabee | 280 | size_t i; |
2d026f04 | 281 | ssize_t tail_len; |
99511cd0 | 282 | SCM *argv; |
eaefabee | 283 | |
2d026f04 AW |
284 | tail_len = scm_ilength (tail); |
285 | if (tail_len < 0) | |
29366989 AW |
286 | scm_misc_error ("vm-engine", "tail values to abort should be a list", |
287 | scm_list_1 (tail)); | |
288 | ||
99511cd0 AW |
289 | argv = alloca ((nstack + tail_len) * sizeof (SCM)); |
290 | for (i = 0; i < nstack; i++) | |
291 | argv[i] = stack_args[i]; | |
292 | for (; i < nstack + tail_len; i++, tail = scm_cdr (tail)) | |
2d026f04 | 293 | argv[i] = scm_car (tail); |
eaefabee | 294 | |
99511cd0 AW |
295 | /* FIXME: NULLSTACK (SCM_VM_DATA (vp)->sp - sp) */ |
296 | SCM_VM_DATA (vm)->sp = sp; | |
297 | ||
298 | scm_c_abort (vm, tag, nstack + tail_len, argv, current_registers); | |
cee1d22c AW |
299 | } |
300 | ||
9d381ba4 | 301 | static void |
44ece399 AW |
302 | vm_reinstate_partial_continuation (struct scm_vm *vp, SCM cont, |
303 | size_t n, SCM *argv, | |
9d381ba4 AW |
304 | scm_t_dynstack *dynstack, |
305 | scm_i_jmp_buf *registers) | |
cee1d22c | 306 | { |
07801437 AW |
307 | struct scm_vm_cont *cp; |
308 | SCM *argv_copy, *base; | |
9ede013f | 309 | scm_t_ptrdiff reloc; |
07801437 AW |
310 | size_t i; |
311 | ||
312 | argv_copy = alloca (n * sizeof(SCM)); | |
313 | memcpy (argv_copy, argv, n * sizeof(SCM)); | |
314 | ||
07801437 | 315 | cp = SCM_VM_CONT_DATA (cont); |
b636cdb0 | 316 | base = SCM_FRAME_LOCALS_ADDRESS (vp->fp); |
9ede013f | 317 | reloc = cp->reloc + (base - cp->stack_base); |
07801437 | 318 | |
0fc9040f | 319 | #define RELOC(scm_p) \ |
9ede013f | 320 | (((SCM *) (scm_p)) + reloc) |
07801437 AW |
321 | |
322 | if ((base - vp->stack_base) + cp->stack_size + n + 1 > vp->stack_size) | |
29366989 AW |
323 | scm_misc_error ("vm-engine", |
324 | "not enough space to instate partial continuation", | |
44ece399 | 325 | scm_list_1 (cont)); |
07801437 AW |
326 | |
327 | memcpy (base, cp->stack_base, cp->stack_size * sizeof (SCM)); | |
328 | ||
329 | /* now relocate frame pointers */ | |
330 | { | |
331 | SCM *fp; | |
332 | for (fp = RELOC (cp->fp); | |
333 | SCM_FRAME_LOWER_ADDRESS (fp) > base; | |
334 | fp = SCM_FRAME_DYNAMIC_LINK (fp)) | |
335 | SCM_FRAME_SET_DYNAMIC_LINK (fp, RELOC (SCM_FRAME_DYNAMIC_LINK (fp))); | |
336 | } | |
337 | ||
338 | vp->sp = base - 1 + cp->stack_size; | |
339 | vp->fp = RELOC (cp->fp); | |
840ec334 | 340 | vp->ip = cp->ra; |
07801437 | 341 | |
840ec334 | 342 | /* Push the arguments. */ |
07801437 AW |
343 | for (i = 0; i < n; i++) |
344 | { | |
345 | vp->sp++; | |
346 | *vp->sp = argv_copy[i]; | |
347 | } | |
9a1c6f1f | 348 | |
9d381ba4 AW |
349 | /* The prompt captured a slice of the dynamic stack. Here we wind |
350 | those entries onto the current thread's stack. We also have to | |
351 | relocate any prompts that we see along the way. */ | |
352 | { | |
353 | scm_t_bits *walk; | |
354 | ||
355 | for (walk = SCM_DYNSTACK_FIRST (cp->dynstack); | |
356 | SCM_DYNSTACK_TAG (walk); | |
357 | walk = SCM_DYNSTACK_NEXT (walk)) | |
358 | { | |
359 | scm_t_bits tag = SCM_DYNSTACK_TAG (walk); | |
360 | ||
361 | if (SCM_DYNSTACK_TAG_TYPE (tag) == SCM_DYNSTACK_TYPE_PROMPT) | |
362 | scm_dynstack_wind_prompt (dynstack, walk, reloc, registers); | |
363 | else | |
364 | scm_dynstack_wind_1 (dynstack, walk); | |
365 | } | |
366 | } | |
adbdfd6d | 367 | #undef RELOC |
4f66bcde AW |
368 | } |
369 | ||
370 | \f | |
17e90c5e KN |
371 | /* |
372 | * VM Internal functions | |
373 | */ | |
374 | ||
6f3b0cc2 AW |
375 | void |
376 | scm_i_vm_print (SCM x, SCM port, scm_print_state *pstate) | |
377 | { | |
0a935b2a LC |
378 | const struct scm_vm *vm; |
379 | ||
380 | vm = SCM_VM_DATA (x); | |
381 | ||
0607ebbf | 382 | scm_puts_unlocked ("#<vm ", port); |
0a935b2a LC |
383 | switch (vm->engine) |
384 | { | |
385 | case SCM_VM_REGULAR_ENGINE: | |
0607ebbf | 386 | scm_puts_unlocked ("regular-engine ", port); |
0a935b2a LC |
387 | break; |
388 | ||
389 | case SCM_VM_DEBUG_ENGINE: | |
0607ebbf | 390 | scm_puts_unlocked ("debug-engine ", port); |
0a935b2a LC |
391 | break; |
392 | ||
393 | default: | |
0607ebbf | 394 | scm_puts_unlocked ("unknown-engine ", port); |
0a935b2a | 395 | } |
6f3b0cc2 | 396 | scm_uintprint (SCM_UNPACK (x), 16, port); |
0607ebbf | 397 | scm_puts_unlocked (">", port); |
6f3b0cc2 AW |
398 | } |
399 | ||
53bdfcf0 AW |
400 | \f |
401 | /* | |
402 | * VM Error Handling | |
403 | */ | |
404 | ||
405 | static void vm_error (const char *msg, SCM arg) SCM_NORETURN; | |
4d497b62 AW |
406 | static void vm_error_bad_instruction (scm_t_uint32 inst) SCM_NORETURN SCM_NOINLINE; |
407 | static void vm_error_unbound (SCM proc, SCM sym) SCM_NORETURN SCM_NOINLINE; | |
408 | static void vm_error_unbound_fluid (SCM proc, SCM fluid) SCM_NORETURN SCM_NOINLINE; | |
409 | static void vm_error_not_a_variable (const char *func_name, SCM x) SCM_NORETURN SCM_NOINLINE; | |
410 | static void vm_error_apply_to_non_list (SCM x) SCM_NORETURN SCM_NOINLINE; | |
411 | static void vm_error_kwargs_length_not_even (SCM proc) SCM_NORETURN SCM_NOINLINE; | |
28d5d253 MW |
412 | static void vm_error_kwargs_invalid_keyword (SCM proc, SCM obj) SCM_NORETURN SCM_NOINLINE; |
413 | static void vm_error_kwargs_unrecognized_keyword (SCM proc, SCM kw) SCM_NORETURN SCM_NOINLINE; | |
4d497b62 AW |
414 | static void vm_error_too_many_args (int nargs) SCM_NORETURN SCM_NOINLINE; |
415 | static void vm_error_wrong_num_args (SCM proc) SCM_NORETURN SCM_NOINLINE; | |
416 | static void vm_error_wrong_type_apply (SCM proc) SCM_NORETURN SCM_NOINLINE; | |
417 | static void vm_error_stack_overflow (struct scm_vm *vp) SCM_NORETURN SCM_NOINLINE; | |
418 | static void vm_error_stack_underflow (void) SCM_NORETURN SCM_NOINLINE; | |
419 | static void vm_error_improper_list (SCM x) SCM_NORETURN SCM_NOINLINE; | |
420 | static void vm_error_not_a_pair (const char *subr, SCM x) SCM_NORETURN SCM_NOINLINE; | |
421 | static void vm_error_not_a_bytevector (const char *subr, SCM x) SCM_NORETURN SCM_NOINLINE; | |
422 | static void vm_error_not_a_struct (const char *subr, SCM x) SCM_NORETURN SCM_NOINLINE; | |
423 | static void vm_error_no_values (void) SCM_NORETURN SCM_NOINLINE; | |
424 | static void vm_error_not_enough_values (void) SCM_NORETURN SCM_NOINLINE; | |
82f4bac4 | 425 | static void vm_error_wrong_number_of_values (scm_t_uint32 expected) SCM_NORETURN SCM_NOINLINE; |
4d497b62 AW |
426 | static void vm_error_continuation_not_rewindable (SCM cont) SCM_NORETURN SCM_NOINLINE; |
427 | static void vm_error_bad_wide_string_length (size_t len) SCM_NORETURN SCM_NOINLINE; | |
53bdfcf0 AW |
428 | |
429 | static void | |
430 | vm_error (const char *msg, SCM arg) | |
431 | { | |
432 | scm_throw (sym_vm_error, | |
433 | scm_list_3 (sym_vm_run, scm_from_latin1_string (msg), | |
434 | SCM_UNBNDP (arg) ? SCM_EOL : scm_list_1 (arg))); | |
435 | abort(); /* not reached */ | |
436 | } | |
437 | ||
438 | static void | |
439 | vm_error_bad_instruction (scm_t_uint32 inst) | |
440 | { | |
441 | vm_error ("VM: Bad instruction: ~s", scm_from_uint32 (inst)); | |
442 | } | |
443 | ||
444 | static void | |
445 | vm_error_unbound (SCM proc, SCM sym) | |
446 | { | |
447 | scm_error_scm (scm_misc_error_key, proc, | |
448 | scm_from_latin1_string ("Unbound variable: ~s"), | |
449 | scm_list_1 (sym), SCM_BOOL_F); | |
450 | } | |
451 | ||
452 | static void | |
453 | vm_error_unbound_fluid (SCM proc, SCM fluid) | |
454 | { | |
455 | scm_error_scm (scm_misc_error_key, proc, | |
456 | scm_from_latin1_string ("Unbound fluid: ~s"), | |
457 | scm_list_1 (fluid), SCM_BOOL_F); | |
458 | } | |
459 | ||
460 | static void | |
461 | vm_error_not_a_variable (const char *func_name, SCM x) | |
462 | { | |
463 | scm_error (scm_arg_type_key, func_name, "Not a variable: ~S", | |
464 | scm_list_1 (x), scm_list_1 (x)); | |
465 | } | |
466 | ||
53bdfcf0 AW |
467 | static void |
468 | vm_error_apply_to_non_list (SCM x) | |
469 | { | |
470 | scm_error (scm_arg_type_key, "apply", "Apply to non-list: ~S", | |
471 | scm_list_1 (x), scm_list_1 (x)); | |
472 | } | |
473 | ||
474 | static void | |
475 | vm_error_kwargs_length_not_even (SCM proc) | |
476 | { | |
477 | scm_error_scm (sym_keyword_argument_error, proc, | |
478 | scm_from_latin1_string ("Odd length of keyword argument list"), | |
479 | SCM_EOL, SCM_BOOL_F); | |
480 | } | |
481 | ||
482 | static void | |
4af0d97e | 483 | vm_error_kwargs_invalid_keyword (SCM proc, SCM obj) |
53bdfcf0 AW |
484 | { |
485 | scm_error_scm (sym_keyword_argument_error, proc, | |
486 | scm_from_latin1_string ("Invalid keyword"), | |
4af0d97e | 487 | SCM_EOL, scm_list_1 (obj)); |
53bdfcf0 AW |
488 | } |
489 | ||
490 | static void | |
4af0d97e | 491 | vm_error_kwargs_unrecognized_keyword (SCM proc, SCM kw) |
53bdfcf0 AW |
492 | { |
493 | scm_error_scm (sym_keyword_argument_error, proc, | |
494 | scm_from_latin1_string ("Unrecognized keyword"), | |
4af0d97e | 495 | SCM_EOL, scm_list_1 (kw)); |
53bdfcf0 AW |
496 | } |
497 | ||
498 | static void | |
499 | vm_error_too_many_args (int nargs) | |
500 | { | |
501 | vm_error ("VM: Too many arguments", scm_from_int (nargs)); | |
502 | } | |
503 | ||
504 | static void | |
505 | vm_error_wrong_num_args (SCM proc) | |
506 | { | |
507 | scm_wrong_num_args (proc); | |
508 | } | |
509 | ||
510 | static void | |
511 | vm_error_wrong_type_apply (SCM proc) | |
512 | { | |
513 | scm_error (scm_arg_type_key, NULL, "Wrong type to apply: ~S", | |
514 | scm_list_1 (proc), scm_list_1 (proc)); | |
515 | } | |
516 | ||
517 | static void | |
518 | vm_error_stack_overflow (struct scm_vm *vp) | |
519 | { | |
520 | if (vp->stack_limit < vp->stack_base + vp->stack_size) | |
521 | /* There are VM_STACK_RESERVE_SIZE bytes left. Make them available so | |
522 | that `throw' below can run on this VM. */ | |
523 | vp->stack_limit = vp->stack_base + vp->stack_size; | |
524 | else | |
525 | /* There is no space left on the stack. FIXME: Do something more | |
526 | sensible here! */ | |
527 | abort (); | |
528 | vm_error ("VM: Stack overflow", SCM_UNDEFINED); | |
529 | } | |
530 | ||
531 | static void | |
532 | vm_error_stack_underflow (void) | |
533 | { | |
534 | vm_error ("VM: Stack underflow", SCM_UNDEFINED); | |
535 | } | |
536 | ||
537 | static void | |
538 | vm_error_improper_list (SCM x) | |
539 | { | |
540 | vm_error ("Expected a proper list, but got object with tail ~s", x); | |
541 | } | |
542 | ||
543 | static void | |
544 | vm_error_not_a_pair (const char *subr, SCM x) | |
545 | { | |
546 | scm_wrong_type_arg_msg (subr, 1, x, "pair"); | |
547 | } | |
548 | ||
549 | static void | |
550 | vm_error_not_a_bytevector (const char *subr, SCM x) | |
551 | { | |
552 | scm_wrong_type_arg_msg (subr, 1, x, "bytevector"); | |
553 | } | |
554 | ||
555 | static void | |
556 | vm_error_not_a_struct (const char *subr, SCM x) | |
557 | { | |
558 | scm_wrong_type_arg_msg (subr, 1, x, "struct"); | |
559 | } | |
560 | ||
561 | static void | |
562 | vm_error_no_values (void) | |
563 | { | |
564 | vm_error ("Zero values returned to single-valued continuation", | |
565 | SCM_UNDEFINED); | |
566 | } | |
567 | ||
568 | static void | |
569 | vm_error_not_enough_values (void) | |
570 | { | |
571 | vm_error ("Too few values returned to continuation", SCM_UNDEFINED); | |
572 | } | |
573 | ||
82f4bac4 AW |
574 | static void |
575 | vm_error_wrong_number_of_values (scm_t_uint32 expected) | |
576 | { | |
577 | vm_error ("Wrong number of values returned to continuation (expected ~a)", | |
578 | scm_from_uint32 (expected)); | |
579 | } | |
580 | ||
53bdfcf0 AW |
581 | static void |
582 | vm_error_continuation_not_rewindable (SCM cont) | |
583 | { | |
584 | vm_error ("Unrewindable partial continuation", cont); | |
585 | } | |
586 | ||
587 | static void | |
588 | vm_error_bad_wide_string_length (size_t len) | |
589 | { | |
590 | vm_error ("VM: Bad wide string length: ~S", scm_from_size_t (len)); | |
591 | } | |
592 | ||
53bdfcf0 AW |
593 | |
594 | \f | |
28b119ee | 595 | |
ef6b7f71 | 596 | static SCM vm_boot_continuation; |
486013d6 AW |
597 | static SCM vm_builtin_apply; |
598 | static SCM vm_builtin_values; | |
599 | static SCM vm_builtin_abort_to_prompt; | |
600 | static SCM vm_builtin_call_with_values; | |
601 | static SCM vm_builtin_call_with_current_continuation; | |
510ca126 | 602 | |
ef6b7f71 | 603 | static const scm_t_uint32 vm_boot_continuation_code[] = { |
095100bb | 604 | SCM_PACK_OP_24 (halt, 0) |
510ca126 AW |
605 | }; |
606 | ||
486013d6 | 607 | static const scm_t_uint32 vm_builtin_apply_code[] = { |
095100bb AW |
608 | SCM_PACK_OP_24 (assert_nargs_ge, 3), |
609 | SCM_PACK_OP_24 (tail_apply, 0), /* proc in r1, args from r2 */ | |
510ca126 AW |
610 | }; |
611 | ||
486013d6 | 612 | static const scm_t_uint32 vm_builtin_values_code[] = { |
095100bb | 613 | SCM_PACK_OP_24 (return_values, 0) /* vals from r1 */ |
510ca126 AW |
614 | }; |
615 | ||
486013d6 | 616 | static const scm_t_uint32 vm_builtin_abort_to_prompt_code[] = { |
095100bb AW |
617 | SCM_PACK_OP_24 (assert_nargs_ge, 2), |
618 | SCM_PACK_OP_24 (abort, 0), /* tag in r1, vals from r2 */ | |
486013d6 | 619 | /* FIXME: Partial continuation should capture caller regs. */ |
095100bb | 620 | SCM_PACK_OP_24 (return_values, 0) /* vals from r1 */ |
486013d6 AW |
621 | }; |
622 | ||
623 | static const scm_t_uint32 vm_builtin_call_with_values_code[] = { | |
095100bb AW |
624 | SCM_PACK_OP_24 (assert_nargs_ee, 3), |
625 | SCM_PACK_OP_24 (alloc_frame, 7), | |
626 | SCM_PACK_OP_12_12 (mov, 6, 1), | |
627 | SCM_PACK_OP_24 (call, 6), SCM_PACK_OP_ARG_8_24 (0, 1), | |
628 | SCM_PACK_OP_12_12 (mov, 0, 2), | |
629 | SCM_PACK_OP_24 (tail_call_shuffle, 7) | |
486013d6 AW |
630 | }; |
631 | ||
632 | static const scm_t_uint32 vm_builtin_call_with_current_continuation_code[] = { | |
095100bb AW |
633 | SCM_PACK_OP_24 (assert_nargs_ee, 2), |
634 | SCM_PACK_OP_24 (call_cc, 0) | |
486013d6 AW |
635 | }; |
636 | ||
637 | ||
638 | static SCM | |
639 | scm_vm_builtin_ref (unsigned idx) | |
640 | { | |
641 | switch (idx) | |
642 | { | |
9f309e2c | 643 | #define INDEX_TO_NAME(builtin, BUILTIN, req, opt, rest) \ |
486013d6 AW |
644 | case SCM_VM_BUILTIN_##BUILTIN: return vm_builtin_##builtin; |
645 | FOR_EACH_VM_BUILTIN(INDEX_TO_NAME) | |
646 | #undef INDEX_TO_NAME | |
647 | default: abort(); | |
648 | } | |
649 | } | |
650 | ||
9f309e2c | 651 | SCM scm_sym_apply; |
486013d6 AW |
652 | static SCM scm_sym_values; |
653 | static SCM scm_sym_abort_to_prompt; | |
654 | static SCM scm_sym_call_with_values; | |
655 | static SCM scm_sym_call_with_current_continuation; | |
656 | ||
657 | SCM | |
658 | scm_vm_builtin_name_to_index (SCM name) | |
659 | #define FUNC_NAME "builtin-name->index" | |
660 | { | |
661 | SCM_VALIDATE_SYMBOL (1, name); | |
662 | ||
9f309e2c | 663 | #define NAME_TO_INDEX(builtin, BUILTIN, req, opt, rest) \ |
486013d6 AW |
664 | if (scm_is_eq (name, scm_sym_##builtin)) \ |
665 | return scm_from_uint (SCM_VM_BUILTIN_##BUILTIN); | |
666 | FOR_EACH_VM_BUILTIN(NAME_TO_INDEX) | |
667 | #undef NAME_TO_INDEX | |
668 | ||
669 | return SCM_BOOL_F; | |
670 | } | |
671 | #undef FUNC_NAME | |
672 | ||
673 | SCM | |
674 | scm_vm_builtin_index_to_name (SCM index) | |
675 | #define FUNC_NAME "builtin-index->name" | |
676 | { | |
677 | unsigned idx; | |
678 | ||
679 | SCM_VALIDATE_UINT_COPY (1, index, idx); | |
680 | ||
681 | switch (idx) | |
682 | { | |
9f309e2c | 683 | #define INDEX_TO_NAME(builtin, BUILTIN, req, opt, rest) \ |
486013d6 AW |
684 | case SCM_VM_BUILTIN_##BUILTIN: return scm_sym_##builtin; |
685 | FOR_EACH_VM_BUILTIN(INDEX_TO_NAME) | |
686 | #undef INDEX_TO_NAME | |
687 | default: return SCM_BOOL_F; | |
688 | } | |
689 | } | |
690 | #undef FUNC_NAME | |
691 | ||
692 | static void | |
693 | scm_init_vm_builtins (void) | |
694 | { | |
486013d6 AW |
695 | scm_c_define_gsubr ("builtin-name->index", 1, 0, 0, |
696 | scm_vm_builtin_name_to_index); | |
697 | scm_c_define_gsubr ("builtin-index->name", 1, 0, 0, | |
698 | scm_vm_builtin_index_to_name); | |
699 | } | |
700 | ||
701 | SCM | |
702 | scm_i_call_with_current_continuation (SCM proc) | |
703 | { | |
704 | return scm_call_1 (vm_builtin_call_with_current_continuation, proc); | |
705 | } | |
510ca126 | 706 | |
a98cef7e KN |
707 | \f |
708 | /* | |
709 | * VM | |
710 | */ | |
711 | ||
aab9d46c | 712 | #define VM_MIN_STACK_SIZE (1024) |
486013d6 | 713 | #define VM_DEFAULT_STACK_SIZE (256 * 1024) |
aab9d46c SIT |
714 | static size_t vm_stack_size = VM_DEFAULT_STACK_SIZE; |
715 | ||
716 | static void | |
717 | initialize_default_stack_size (void) | |
718 | { | |
719 | int size = scm_getenv_int ("GUILE_STACK_SIZE", vm_stack_size); | |
720 | if (size >= VM_MIN_STACK_SIZE) | |
721 | vm_stack_size = size; | |
722 | } | |
17e90c5e | 723 | |
f42cfbf0 AW |
724 | #define VM_NAME vm_regular_engine |
725 | #define VM_USE_HOOKS 0 | |
6d14383e | 726 | #define FUNC_NAME "vm-regular-engine" |
83495480 | 727 | #include "vm-engine.c" |
6d14383e | 728 | #undef FUNC_NAME |
f42cfbf0 AW |
729 | #undef VM_USE_HOOKS |
730 | #undef VM_NAME | |
17e90c5e | 731 | |
f42cfbf0 AW |
732 | #define VM_NAME vm_debug_engine |
733 | #define VM_USE_HOOKS 1 | |
6d14383e | 734 | #define FUNC_NAME "vm-debug-engine" |
83495480 | 735 | #include "vm-engine.c" |
6d14383e | 736 | #undef FUNC_NAME |
f42cfbf0 AW |
737 | #undef VM_USE_HOOKS |
738 | #undef VM_NAME | |
17e90c5e | 739 | |
f42cfbf0 | 740 | typedef SCM (*scm_t_vm_engine) (SCM vm, SCM program, SCM *argv, size_t nargs); |
73c3db66 | 741 | |
f42cfbf0 AW |
742 | static const scm_t_vm_engine vm_engines[SCM_VM_NUM_ENGINES] = |
743 | { vm_regular_engine, vm_debug_engine }; | |
73c3db66 | 744 | |
e3eb628d LC |
745 | #ifdef VM_ENABLE_PRECISE_STACK_GC_SCAN |
746 | ||
747 | /* The GC "kind" for the VM stack. */ | |
748 | static int vm_stack_gc_kind; | |
749 | ||
750 | #endif | |
751 | ||
a98cef7e | 752 | static SCM |
17e90c5e KN |
753 | make_vm (void) |
754 | #define FUNC_NAME "make_vm" | |
a98cef7e | 755 | { |
17e90c5e | 756 | int i; |
7f991c7d | 757 | struct scm_vm *vp; |
747a1635 | 758 | |
7f991c7d | 759 | vp = scm_gc_malloc (sizeof (struct scm_vm), "vm"); |
d8eeb67c | 760 | |
aab9d46c | 761 | vp->stack_size= vm_stack_size; |
e3eb628d LC |
762 | |
763 | #ifdef VM_ENABLE_PRECISE_STACK_GC_SCAN | |
4168aa46 TTN |
764 | vp->stack_base = (SCM *) |
765 | GC_generic_malloc (vp->stack_size * sizeof (SCM), vm_stack_gc_kind); | |
e3eb628d LC |
766 | |
767 | /* Keep a pointer to VP so that `vm_stack_mark ()' can know what the stack | |
768 | top is. */ | |
21041372 | 769 | *vp->stack_base = SCM_PACK_POINTER (vp); |
e3eb628d LC |
770 | vp->stack_base++; |
771 | vp->stack_size--; | |
772 | #else | |
d8eeb67c LC |
773 | vp->stack_base = scm_gc_malloc (vp->stack_size * sizeof (SCM), |
774 | "stack-base"); | |
e3eb628d LC |
775 | #endif |
776 | ||
f1046e6b | 777 | vp->stack_limit = vp->stack_base + vp->stack_size - VM_STACK_RESERVE_SIZE; |
3616e9e9 KN |
778 | vp->ip = NULL; |
779 | vp->sp = vp->stack_base - 1; | |
780 | vp->fp = NULL; | |
ea9f4f4b | 781 | vp->engine = vm_default_engine; |
7656f194 | 782 | vp->trace_level = 0; |
17e90c5e | 783 | for (i = 0; i < SCM_VM_NUM_HOOKS; i++) |
3d5ee0cd | 784 | vp->hooks[i] = SCM_BOOL_F; |
6f3b0cc2 | 785 | return scm_cell (scm_tc7_vm, (scm_t_bits)vp); |
a98cef7e | 786 | } |
17e90c5e | 787 | #undef FUNC_NAME |
a98cef7e | 788 | |
e3eb628d LC |
789 | #ifdef VM_ENABLE_PRECISE_STACK_GC_SCAN |
790 | ||
791 | /* Mark the VM stack region between its base and its current top. */ | |
792 | static struct GC_ms_entry * | |
793 | vm_stack_mark (GC_word *addr, struct GC_ms_entry *mark_stack_ptr, | |
794 | struct GC_ms_entry *mark_stack_limit, GC_word env) | |
795 | { | |
796 | GC_word *word; | |
797 | const struct scm_vm *vm; | |
798 | ||
799 | /* The first word of the VM stack should contain a pointer to the | |
800 | corresponding VM. */ | |
801 | vm = * ((struct scm_vm **) addr); | |
802 | ||
8071c490 | 803 | if (vm == NULL |
f1046e6b | 804 | || (SCM *) addr != vm->stack_base - 1) |
e3eb628d LC |
805 | /* ADDR must be a pointer to a free-list element, which we must ignore |
806 | (see warning in <gc/gc_mark.h>). */ | |
807 | return mark_stack_ptr; | |
808 | ||
e3eb628d LC |
809 | for (word = (GC_word *) vm->stack_base; word <= (GC_word *) vm->sp; word++) |
810 | mark_stack_ptr = GC_MARK_AND_PUSH ((* (GC_word **) word), | |
811 | mark_stack_ptr, mark_stack_limit, | |
812 | NULL); | |
813 | ||
814 | return mark_stack_ptr; | |
815 | } | |
816 | ||
817 | #endif /* VM_ENABLE_PRECISE_STACK_GC_SCAN */ | |
818 | ||
819 | ||
6d14383e | 820 | SCM |
4abef68f | 821 | scm_c_vm_run (SCM vm, SCM program, SCM *argv, int nargs) |
6d14383e | 822 | { |
4abef68f | 823 | struct scm_vm *vp = SCM_VM_DATA (vm); |
b95d76fc | 824 | SCM_CHECK_STACK; |
f42cfbf0 | 825 | return vm_engines[vp->engine](vm, program, argv, nargs); |
6d14383e AW |
826 | } |
827 | ||
a222cbc9 AW |
828 | SCM |
829 | scm_the_vm (void) | |
271c3d31 | 830 | { |
ea9f4f4b AW |
831 | scm_i_thread *t = SCM_I_CURRENT_THREAD; |
832 | ||
833 | if (SCM_UNLIKELY (scm_is_false (t->vm))) | |
834 | t->vm = make_vm (); | |
835 | ||
836 | return t->vm; | |
271c3d31 | 837 | } |
499a4c07 | 838 | |
a222cbc9 | 839 | /* Scheme interface */ |
a98cef7e | 840 | |
17e90c5e KN |
841 | #define VM_DEFINE_HOOK(n) \ |
842 | { \ | |
3d5ee0cd | 843 | struct scm_vm *vp; \ |
972275ee | 844 | vp = SCM_VM_DATA (scm_the_vm ()); \ |
8b22ed7a | 845 | if (scm_is_false (vp->hooks[n])) \ |
238e7a11 | 846 | vp->hooks[n] = scm_make_hook (SCM_I_MAKINUM (1)); \ |
3d5ee0cd | 847 | return vp->hooks[n]; \ |
17e90c5e KN |
848 | } |
849 | ||
972275ee AW |
850 | SCM_DEFINE (scm_vm_apply_hook, "vm-apply-hook", 0, 0, 0, |
851 | (void), | |
17e90c5e | 852 | "") |
c45d4d77 | 853 | #define FUNC_NAME s_scm_vm_apply_hook |
a98cef7e | 854 | { |
c45d4d77 | 855 | VM_DEFINE_HOOK (SCM_VM_APPLY_HOOK); |
a98cef7e KN |
856 | } |
857 | #undef FUNC_NAME | |
858 | ||
972275ee AW |
859 | SCM_DEFINE (scm_vm_push_continuation_hook, "vm-push-continuation-hook", 0, 0, 0, |
860 | (void), | |
17e90c5e | 861 | "") |
c45d4d77 | 862 | #define FUNC_NAME s_scm_vm_push_continuation_hook |
a98cef7e | 863 | { |
c45d4d77 | 864 | VM_DEFINE_HOOK (SCM_VM_PUSH_CONTINUATION_HOOK); |
a98cef7e KN |
865 | } |
866 | #undef FUNC_NAME | |
867 | ||
972275ee AW |
868 | SCM_DEFINE (scm_vm_pop_continuation_hook, "vm-pop-continuation-hook", 0, 0, 0, |
869 | (void), | |
17e90c5e | 870 | "") |
c45d4d77 | 871 | #define FUNC_NAME s_scm_vm_pop_continuation_hook |
a98cef7e | 872 | { |
c45d4d77 | 873 | VM_DEFINE_HOOK (SCM_VM_POP_CONTINUATION_HOOK); |
a98cef7e KN |
874 | } |
875 | #undef FUNC_NAME | |
876 | ||
972275ee AW |
877 | SCM_DEFINE (scm_vm_next_hook, "vm-next-hook", 0, 0, 0, |
878 | (void), | |
17e90c5e | 879 | "") |
c45d4d77 | 880 | #define FUNC_NAME s_scm_vm_next_hook |
a98cef7e | 881 | { |
c45d4d77 | 882 | VM_DEFINE_HOOK (SCM_VM_NEXT_HOOK); |
a98cef7e KN |
883 | } |
884 | #undef FUNC_NAME | |
f3120251 | 885 | |
972275ee AW |
886 | SCM_DEFINE (scm_vm_abort_continuation_hook, "vm-abort-continuation-hook", 0, 0, 0, |
887 | (void), | |
f3120251 AW |
888 | "") |
889 | #define FUNC_NAME s_scm_vm_abort_continuation_hook | |
890 | { | |
891 | VM_DEFINE_HOOK (SCM_VM_ABORT_CONTINUATION_HOOK); | |
892 | } | |
893 | #undef FUNC_NAME | |
894 | ||
972275ee AW |
895 | SCM_DEFINE (scm_vm_restore_continuation_hook, "vm-restore-continuation-hook", 0, 0, 0, |
896 | (void), | |
f3120251 AW |
897 | "") |
898 | #define FUNC_NAME s_scm_vm_restore_continuation_hook | |
899 | { | |
900 | VM_DEFINE_HOOK (SCM_VM_RESTORE_CONTINUATION_HOOK); | |
901 | } | |
902 | #undef FUNC_NAME | |
a98cef7e | 903 | |
972275ee AW |
904 | SCM_DEFINE (scm_vm_trace_level, "vm-trace-level", 0, 0, 0, |
905 | (void), | |
17e90c5e | 906 | "") |
7656f194 | 907 | #define FUNC_NAME s_scm_vm_trace_level |
a98cef7e | 908 | { |
972275ee | 909 | return scm_from_int (SCM_VM_DATA (scm_the_vm ())->trace_level); |
7656f194 AW |
910 | } |
911 | #undef FUNC_NAME | |
912 | ||
972275ee AW |
913 | SCM_DEFINE (scm_set_vm_trace_level_x, "set-vm-trace-level!", 1, 0, 0, |
914 | (SCM level), | |
7656f194 AW |
915 | "") |
916 | #define FUNC_NAME s_scm_set_vm_trace_level_x | |
917 | { | |
972275ee | 918 | SCM_VM_DATA (scm_the_vm ())->trace_level = scm_to_int (level); |
7656f194 | 919 | return SCM_UNSPECIFIED; |
a98cef7e KN |
920 | } |
921 | #undef FUNC_NAME | |
922 | ||
923 | \f | |
ea9f4f4b AW |
924 | /* |
925 | * VM engines | |
926 | */ | |
927 | ||
928 | static int | |
929 | symbol_to_vm_engine (SCM engine, const char *FUNC_NAME) | |
930 | { | |
931 | if (scm_is_eq (engine, sym_regular)) | |
932 | return SCM_VM_REGULAR_ENGINE; | |
933 | else if (scm_is_eq (engine, sym_debug)) | |
934 | return SCM_VM_DEBUG_ENGINE; | |
935 | else | |
936 | SCM_MISC_ERROR ("Unknown VM engine: ~a", scm_list_1 (engine)); | |
937 | } | |
938 | ||
939 | static SCM | |
940 | vm_engine_to_symbol (int engine, const char *FUNC_NAME) | |
941 | { | |
942 | switch (engine) | |
943 | { | |
944 | case SCM_VM_REGULAR_ENGINE: | |
945 | return sym_regular; | |
946 | case SCM_VM_DEBUG_ENGINE: | |
947 | return sym_debug; | |
948 | default: | |
949 | /* ? */ | |
950 | SCM_MISC_ERROR ("Unknown VM engine: ~a", | |
951 | scm_list_1 (scm_from_int (engine))); | |
952 | } | |
953 | } | |
954 | ||
972275ee AW |
955 | SCM_DEFINE (scm_vm_engine, "vm-engine", 0, 0, 0, |
956 | (void), | |
ea9f4f4b AW |
957 | "") |
958 | #define FUNC_NAME s_scm_vm_engine | |
959 | { | |
972275ee | 960 | return vm_engine_to_symbol (SCM_VM_DATA (scm_the_vm ())->engine, FUNC_NAME); |
ea9f4f4b AW |
961 | } |
962 | #undef FUNC_NAME | |
963 | ||
964 | void | |
972275ee | 965 | scm_c_set_vm_engine_x (int engine) |
ea9f4f4b AW |
966 | #define FUNC_NAME "set-vm-engine!" |
967 | { | |
ea9f4f4b AW |
968 | if (engine < 0 || engine >= SCM_VM_NUM_ENGINES) |
969 | SCM_MISC_ERROR ("Unknown VM engine: ~a", | |
970 | scm_list_1 (scm_from_int (engine))); | |
971 | ||
972275ee | 972 | SCM_VM_DATA (scm_the_vm ())->engine = engine; |
ea9f4f4b AW |
973 | } |
974 | #undef FUNC_NAME | |
975 | ||
972275ee AW |
976 | SCM_DEFINE (scm_set_vm_engine_x, "set-vm-engine!", 1, 0, 0, |
977 | (SCM engine), | |
ea9f4f4b AW |
978 | "") |
979 | #define FUNC_NAME s_scm_set_vm_engine_x | |
980 | { | |
972275ee | 981 | scm_c_set_vm_engine_x (symbol_to_vm_engine (engine, FUNC_NAME)); |
ea9f4f4b AW |
982 | return SCM_UNSPECIFIED; |
983 | } | |
984 | #undef FUNC_NAME | |
985 | ||
986 | void | |
987 | scm_c_set_default_vm_engine_x (int engine) | |
988 | #define FUNC_NAME "set-default-vm-engine!" | |
989 | { | |
990 | if (engine < 0 || engine >= SCM_VM_NUM_ENGINES) | |
991 | SCM_MISC_ERROR ("Unknown VM engine: ~a", | |
992 | scm_list_1 (scm_from_int (engine))); | |
993 | ||
994 | vm_default_engine = engine; | |
995 | } | |
996 | #undef FUNC_NAME | |
997 | ||
998 | SCM_DEFINE (scm_set_default_vm_engine_x, "set-default-vm-engine!", 1, 0, 0, | |
999 | (SCM engine), | |
1000 | "") | |
1001 | #define FUNC_NAME s_scm_set_default_vm_engine_x | |
1002 | { | |
1003 | scm_c_set_default_vm_engine_x (symbol_to_vm_engine (engine, FUNC_NAME)); | |
1004 | return SCM_UNSPECIFIED; | |
1005 | } | |
1006 | #undef FUNC_NAME | |
1007 | ||
972275ee AW |
1008 | /* FIXME: This function makes no sense, but we keep it to make sure we |
1009 | have a way of switching to the debug or regular VM. */ | |
1010 | SCM_DEFINE (scm_call_with_vm, "call-with-vm", 1, 0, 1, | |
1011 | (SCM proc, SCM args), | |
ea9f4f4b | 1012 | "Apply @var{proc} to @var{args} in a dynamic extent in which\n" |
972275ee | 1013 | "@var{vm} is the current VM.") |
ea9f4f4b AW |
1014 | #define FUNC_NAME s_scm_call_with_vm |
1015 | { | |
972275ee | 1016 | return scm_apply_0 (proc, args); |
ea9f4f4b AW |
1017 | } |
1018 | #undef FUNC_NAME | |
1019 | ||
1020 | \f | |
a98cef7e | 1021 | /* |
17e90c5e | 1022 | * Initialize |
a98cef7e KN |
1023 | */ |
1024 | ||
07e56b27 AW |
1025 | SCM scm_load_compiled_with_vm (SCM file) |
1026 | { | |
b8bc86bc AW |
1027 | SCM program = scm_load_thunk_from_file (file); |
1028 | ||
4abef68f | 1029 | return scm_c_vm_run (scm_the_vm (), program, NULL, 0); |
07e56b27 AW |
1030 | } |
1031 | ||
67b699cc | 1032 | |
9f309e2c AW |
1033 | void |
1034 | scm_init_vm_builtin_properties (void) | |
1035 | { | |
1036 | /* FIXME: Seems hacky to do this here, but oh well :/ */ | |
1037 | scm_sym_apply = scm_from_utf8_symbol ("apply"); | |
1038 | scm_sym_values = scm_from_utf8_symbol ("values"); | |
1039 | scm_sym_abort_to_prompt = scm_from_utf8_symbol ("abort-to-prompt"); | |
1040 | scm_sym_call_with_values = scm_from_utf8_symbol ("call-with-values"); | |
1041 | scm_sym_call_with_current_continuation = | |
1042 | scm_from_utf8_symbol ("call-with-current-continuation"); | |
1043 | ||
1044 | #define INIT_BUILTIN(builtin, BUILTIN, req, opt, rest) \ | |
1045 | scm_set_procedure_property_x (vm_builtin_##builtin, scm_sym_name, \ | |
1046 | scm_sym_##builtin); \ | |
1047 | scm_set_procedure_minimum_arity_x (vm_builtin_##builtin, \ | |
1048 | SCM_I_MAKINUM (req), \ | |
1049 | SCM_I_MAKINUM (opt), \ | |
1050 | scm_from_bool (rest)); | |
1051 | FOR_EACH_VM_BUILTIN (INIT_BUILTIN); | |
1052 | #undef INIT_BUILTIN | |
1053 | } | |
1054 | ||
17e90c5e | 1055 | void |
07e56b27 | 1056 | scm_bootstrap_vm (void) |
17e90c5e | 1057 | { |
44602b08 AW |
1058 | scm_c_register_extension ("libguile-" SCM_EFFECTIVE_VERSION, |
1059 | "scm_init_vm", | |
60ae5ca2 | 1060 | (scm_t_extension_init_func)scm_init_vm, NULL); |
486013d6 AW |
1061 | scm_c_register_extension ("libguile-" SCM_EFFECTIVE_VERSION, |
1062 | "scm_init_vm_builtins", | |
1063 | (scm_t_extension_init_func)scm_init_vm_builtins, | |
1064 | NULL); | |
60ae5ca2 | 1065 | |
aab9d46c SIT |
1066 | initialize_default_stack_size (); |
1067 | ||
4a655e50 AW |
1068 | sym_vm_run = scm_from_latin1_symbol ("vm-run"); |
1069 | sym_vm_error = scm_from_latin1_symbol ("vm-error"); | |
1070 | sym_keyword_argument_error = scm_from_latin1_symbol ("keyword-argument-error"); | |
1071 | sym_regular = scm_from_latin1_symbol ("regular"); | |
1072 | sym_debug = scm_from_latin1_symbol ("debug"); | |
0404c97d | 1073 | |
ef6b7f71 AW |
1074 | vm_boot_continuation = scm_i_make_program (vm_boot_continuation_code); |
1075 | SCM_SET_CELL_WORD_0 (vm_boot_continuation, | |
1076 | (SCM_CELL_WORD_0 (vm_boot_continuation) | |
73c3db66 | 1077 | | SCM_F_PROGRAM_IS_BOOT)); |
9f309e2c AW |
1078 | |
1079 | #define DEFINE_BUILTIN(builtin, BUILTIN, req, opt, rest) \ | |
80797145 | 1080 | vm_builtin_##builtin = scm_i_make_program (vm_builtin_##builtin##_code); |
9f309e2c AW |
1081 | FOR_EACH_VM_BUILTIN (DEFINE_BUILTIN); |
1082 | #undef DEFINE_BUILTIN | |
73c3db66 | 1083 | |
e3eb628d LC |
1084 | #ifdef VM_ENABLE_PRECISE_STACK_GC_SCAN |
1085 | vm_stack_gc_kind = | |
1086 | GC_new_kind (GC_new_free_list (), | |
1087 | GC_MAKE_PROC (GC_new_proc (vm_stack_mark), 0), | |
1088 | 0, 1); | |
1089 | ||
1090 | #endif | |
07e56b27 AW |
1091 | } |
1092 | ||
1093 | void | |
1094 | scm_init_vm (void) | |
1095 | { | |
17e90c5e | 1096 | #ifndef SCM_MAGIC_SNARFER |
aeeff258 | 1097 | #include "libguile/vm.x" |
17e90c5e | 1098 | #endif |
a98cef7e | 1099 | } |
17e90c5e KN |
1100 | |
1101 | /* | |
1102 | Local Variables: | |
1103 | c-file-style: "gnu" | |
1104 | End: | |
1105 | */ |