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 | |
796e54a7 | 115 | vm_return_to_continuation (struct scm_vm *vp, SCM cont, size_t n, SCM *argv) |
a98cef7e | 116 | { |
d8873dfe AW |
117 | struct scm_vm_cont *cp; |
118 | SCM *argv_copy; | |
119 | ||
120 | argv_copy = alloca (n * sizeof(SCM)); | |
121 | memcpy (argv_copy, argv, n * sizeof(SCM)); | |
122 | ||
d8873dfe AW |
123 | cp = SCM_VM_CONT_DATA (cont); |
124 | ||
f8085163 | 125 | if (vp->stack_size < cp->stack_size + n + 3) |
29366989 | 126 | scm_misc_error ("vm-engine", "not enough space to reinstate continuation", |
796e54a7 | 127 | scm_list_1 (cont)); |
29366989 | 128 | |
d8873dfe AW |
129 | vp->sp = cp->sp; |
130 | vp->fp = cp->fp; | |
131 | memcpy (vp->stack_base, cp->stack_base, cp->stack_size * sizeof (SCM)); | |
bfffd258 | 132 | |
03f16599 AW |
133 | { |
134 | size_t i; | |
135 | ||
136 | /* Push on an empty frame, as the continuation expects. */ | |
f8085163 | 137 | for (i = 0; i < 3; i++) |
03f16599 AW |
138 | { |
139 | vp->sp++; | |
140 | *vp->sp = SCM_BOOL_F; | |
141 | } | |
142 | ||
143 | /* Push the return values. */ | |
144 | for (i = 0; i < n; i++) | |
145 | { | |
146 | vp->sp++; | |
147 | *vp->sp = argv_copy[i]; | |
148 | } | |
840ec334 | 149 | vp->ip = cp->ra; |
03f16599 | 150 | } |
d8873dfe | 151 | } |
bfffd258 | 152 | |
b85cd20f | 153 | static struct scm_vm * thread_vm (scm_i_thread *t); |
bfffd258 | 154 | SCM |
9ede013f | 155 | scm_i_capture_current_stack (void) |
bfffd258 | 156 | { |
9ede013f | 157 | scm_i_thread *thread; |
9ede013f AW |
158 | struct scm_vm *vp; |
159 | ||
160 | thread = SCM_I_CURRENT_THREAD; | |
b85cd20f | 161 | vp = thread_vm (thread); |
9ede013f | 162 | |
840ec334 | 163 | return scm_i_vm_capture_stack (vp->stack_base, vp->fp, vp->sp, vp->ip, |
9ede013f AW |
164 | scm_dynstack_capture_all (&thread->dynstack), |
165 | 0); | |
a98cef7e KN |
166 | } |
167 | ||
59f85eed AW |
168 | static void vm_dispatch_apply_hook (struct scm_vm *vp) SCM_NOINLINE; |
169 | static void vm_dispatch_push_continuation_hook (struct scm_vm *vp) SCM_NOINLINE; | |
170 | static void vm_dispatch_pop_continuation_hook (struct scm_vm *vp, SCM *old_fp) SCM_NOINLINE; | |
171 | static void vm_dispatch_next_hook (struct scm_vm *vp) SCM_NOINLINE; | |
172 | static void vm_dispatch_abort_hook (struct scm_vm *vp) SCM_NOINLINE; | |
173 | static void vm_dispatch_restore_continuation_hook (struct scm_vm *vp) SCM_NOINLINE; | |
c850a0ff | 174 | |
b1b942b7 | 175 | static void |
59f85eed | 176 | vm_dispatch_hook (struct scm_vm *vp, int hook_num, SCM *argv, int n) |
b1b942b7 | 177 | { |
7656f194 | 178 | SCM hook; |
b3567435 | 179 | struct scm_frame c_frame; |
8e4c60ff | 180 | scm_t_cell *frame; |
893fb8d0 | 181 | int saved_trace_level; |
b1b942b7 | 182 | |
7656f194 | 183 | hook = vp->hooks[hook_num]; |
b1b942b7 | 184 | |
7656f194 AW |
185 | if (SCM_LIKELY (scm_is_false (hook)) |
186 | || scm_is_null (SCM_HOOK_PROCEDURES (hook))) | |
187 | return; | |
b3567435 | 188 | |
893fb8d0 AW |
189 | saved_trace_level = vp->trace_level; |
190 | vp->trace_level = 0; | |
b3567435 LC |
191 | |
192 | /* Allocate a frame object on the stack. This is more efficient than calling | |
193 | `scm_c_make_frame ()' to allocate on the heap, but it forces hooks to not | |
194 | capture frame objects. | |
195 | ||
196 | At the same time, procedures such as `frame-procedure' make sense only | |
197 | while the stack frame represented by the frame object is visible, so it | |
198 | seems reasonable to limit the lifetime of frame objects. */ | |
199 | ||
5515edc5 | 200 | c_frame.stack_holder = vp; |
89b235af AW |
201 | c_frame.fp_offset = vp->fp - vp->stack_base; |
202 | c_frame.sp_offset = vp->sp - vp->stack_base; | |
b3567435 | 203 | c_frame.ip = vp->ip; |
8e4c60ff LC |
204 | |
205 | /* Arrange for FRAME to be 8-byte aligned, like any other cell. */ | |
206 | frame = alloca (sizeof (*frame) + 8); | |
207 | frame = (scm_t_cell *) ROUND_UP ((scm_t_uintptr) frame, 8UL); | |
208 | ||
050a40db | 209 | frame->word_0 = SCM_PACK (scm_tc7_frame | (SCM_VM_FRAME_KIND_VM << 8)); |
21041372 | 210 | frame->word_1 = SCM_PACK_POINTER (&c_frame); |
b3567435 | 211 | |
c850a0ff AW |
212 | if (n == 0) |
213 | { | |
214 | SCM args[1]; | |
215 | ||
216 | args[0] = SCM_PACK_POINTER (frame); | |
217 | scm_c_run_hookn (hook, args, 1); | |
218 | } | |
219 | else if (n == 1) | |
220 | { | |
221 | SCM args[2]; | |
222 | ||
223 | args[0] = SCM_PACK_POINTER (frame); | |
224 | args[1] = argv[0]; | |
225 | scm_c_run_hookn (hook, args, 2); | |
226 | } | |
227 | else | |
228 | { | |
229 | SCM args = SCM_EOL; | |
230 | ||
231 | while (n--) | |
232 | args = scm_cons (argv[n], args); | |
233 | scm_c_run_hook (hook, scm_cons (SCM_PACK_POINTER (frame), args)); | |
234 | } | |
b3567435 | 235 | |
893fb8d0 | 236 | vp->trace_level = saved_trace_level; |
b1b942b7 AW |
237 | } |
238 | ||
ea0cd17d | 239 | static void |
59f85eed | 240 | vm_dispatch_apply_hook (struct scm_vm *vp) |
ea0cd17d | 241 | { |
59f85eed | 242 | return vm_dispatch_hook (vp, SCM_VM_APPLY_HOOK, NULL, 0); |
ea0cd17d | 243 | } |
59f85eed | 244 | static void vm_dispatch_push_continuation_hook (struct scm_vm *vp) |
ea0cd17d | 245 | { |
59f85eed | 246 | return vm_dispatch_hook (vp, SCM_VM_PUSH_CONTINUATION_HOOK, NULL, 0); |
ea0cd17d | 247 | } |
59f85eed | 248 | static void vm_dispatch_pop_continuation_hook (struct scm_vm *vp, SCM *old_fp) |
ea0cd17d | 249 | { |
59f85eed | 250 | return vm_dispatch_hook (vp, SCM_VM_POP_CONTINUATION_HOOK, |
ea0cd17d AW |
251 | &SCM_FRAME_LOCAL (old_fp, 1), |
252 | SCM_FRAME_NUM_LOCALS (old_fp, vp->sp) - 1); | |
253 | } | |
59f85eed | 254 | static void vm_dispatch_next_hook (struct scm_vm *vp) |
ea0cd17d | 255 | { |
59f85eed | 256 | return vm_dispatch_hook (vp, SCM_VM_NEXT_HOOK, NULL, 0); |
ea0cd17d | 257 | } |
59f85eed | 258 | static void vm_dispatch_abort_hook (struct scm_vm *vp) |
ea0cd17d | 259 | { |
59f85eed | 260 | return vm_dispatch_hook (vp, SCM_VM_ABORT_CONTINUATION_HOOK, |
ea0cd17d AW |
261 | &SCM_FRAME_LOCAL (vp->fp, 1), |
262 | SCM_FRAME_NUM_LOCALS (vp->fp, vp->sp) - 1); | |
263 | } | |
59f85eed | 264 | static void vm_dispatch_restore_continuation_hook (struct scm_vm *vp) |
ea0cd17d | 265 | { |
59f85eed | 266 | return vm_dispatch_hook (vp, SCM_VM_RESTORE_CONTINUATION_HOOK, NULL, 0); |
ea0cd17d AW |
267 | } |
268 | ||
4f66bcde | 269 | static void |
b44f5451 AW |
270 | vm_abort (struct scm_vm *vp, SCM tag, |
271 | size_t nstack, SCM *stack_args, SCM tail, SCM *sp, | |
99511cd0 | 272 | scm_i_jmp_buf *current_registers) SCM_NORETURN; |
9d381ba4 AW |
273 | |
274 | static void | |
b44f5451 AW |
275 | vm_abort (struct scm_vm *vp, SCM tag, |
276 | size_t nstack, SCM *stack_args, SCM tail, SCM *sp, | |
99511cd0 | 277 | scm_i_jmp_buf *current_registers) |
4f66bcde | 278 | { |
eaefabee | 279 | size_t i; |
2d026f04 | 280 | ssize_t tail_len; |
99511cd0 | 281 | SCM *argv; |
eaefabee | 282 | |
2d026f04 AW |
283 | tail_len = scm_ilength (tail); |
284 | if (tail_len < 0) | |
29366989 AW |
285 | scm_misc_error ("vm-engine", "tail values to abort should be a list", |
286 | scm_list_1 (tail)); | |
287 | ||
99511cd0 AW |
288 | argv = alloca ((nstack + tail_len) * sizeof (SCM)); |
289 | for (i = 0; i < nstack; i++) | |
290 | argv[i] = stack_args[i]; | |
291 | for (; i < nstack + tail_len; i++, tail = scm_cdr (tail)) | |
2d026f04 | 292 | argv[i] = scm_car (tail); |
eaefabee | 293 | |
99511cd0 | 294 | /* FIXME: NULLSTACK (SCM_VM_DATA (vp)->sp - sp) */ |
b44f5451 | 295 | vp->sp = sp; |
99511cd0 | 296 | |
b44f5451 | 297 | scm_c_abort (vp, tag, nstack + tail_len, argv, current_registers); |
cee1d22c AW |
298 | } |
299 | ||
9d381ba4 | 300 | static void |
44ece399 AW |
301 | vm_reinstate_partial_continuation (struct scm_vm *vp, SCM cont, |
302 | size_t n, SCM *argv, | |
9d381ba4 AW |
303 | scm_t_dynstack *dynstack, |
304 | scm_i_jmp_buf *registers) | |
cee1d22c | 305 | { |
07801437 AW |
306 | struct scm_vm_cont *cp; |
307 | SCM *argv_copy, *base; | |
9ede013f | 308 | scm_t_ptrdiff reloc; |
07801437 AW |
309 | size_t i; |
310 | ||
311 | argv_copy = alloca (n * sizeof(SCM)); | |
312 | memcpy (argv_copy, argv, n * sizeof(SCM)); | |
313 | ||
07801437 | 314 | cp = SCM_VM_CONT_DATA (cont); |
b636cdb0 | 315 | base = SCM_FRAME_LOCALS_ADDRESS (vp->fp); |
9ede013f | 316 | reloc = cp->reloc + (base - cp->stack_base); |
07801437 | 317 | |
0fc9040f | 318 | #define RELOC(scm_p) \ |
9ede013f | 319 | (((SCM *) (scm_p)) + reloc) |
07801437 AW |
320 | |
321 | if ((base - vp->stack_base) + cp->stack_size + n + 1 > vp->stack_size) | |
29366989 AW |
322 | scm_misc_error ("vm-engine", |
323 | "not enough space to instate partial continuation", | |
44ece399 | 324 | scm_list_1 (cont)); |
07801437 AW |
325 | |
326 | memcpy (base, cp->stack_base, cp->stack_size * sizeof (SCM)); | |
327 | ||
328 | /* now relocate frame pointers */ | |
329 | { | |
330 | SCM *fp; | |
331 | for (fp = RELOC (cp->fp); | |
332 | SCM_FRAME_LOWER_ADDRESS (fp) > base; | |
333 | fp = SCM_FRAME_DYNAMIC_LINK (fp)) | |
334 | SCM_FRAME_SET_DYNAMIC_LINK (fp, RELOC (SCM_FRAME_DYNAMIC_LINK (fp))); | |
335 | } | |
336 | ||
337 | vp->sp = base - 1 + cp->stack_size; | |
338 | vp->fp = RELOC (cp->fp); | |
840ec334 | 339 | vp->ip = cp->ra; |
07801437 | 340 | |
840ec334 | 341 | /* Push the arguments. */ |
07801437 AW |
342 | for (i = 0; i < n; i++) |
343 | { | |
344 | vp->sp++; | |
345 | *vp->sp = argv_copy[i]; | |
346 | } | |
9a1c6f1f | 347 | |
9d381ba4 AW |
348 | /* The prompt captured a slice of the dynamic stack. Here we wind |
349 | those entries onto the current thread's stack. We also have to | |
350 | relocate any prompts that we see along the way. */ | |
351 | { | |
352 | scm_t_bits *walk; | |
353 | ||
354 | for (walk = SCM_DYNSTACK_FIRST (cp->dynstack); | |
355 | SCM_DYNSTACK_TAG (walk); | |
356 | walk = SCM_DYNSTACK_NEXT (walk)) | |
357 | { | |
358 | scm_t_bits tag = SCM_DYNSTACK_TAG (walk); | |
359 | ||
360 | if (SCM_DYNSTACK_TAG_TYPE (tag) == SCM_DYNSTACK_TYPE_PROMPT) | |
361 | scm_dynstack_wind_prompt (dynstack, walk, reloc, registers); | |
362 | else | |
363 | scm_dynstack_wind_1 (dynstack, walk); | |
364 | } | |
365 | } | |
adbdfd6d | 366 | #undef RELOC |
4f66bcde AW |
367 | } |
368 | ||
369 | \f | |
53bdfcf0 AW |
370 | /* |
371 | * VM Error Handling | |
372 | */ | |
373 | ||
374 | static void vm_error (const char *msg, SCM arg) SCM_NORETURN; | |
4d497b62 AW |
375 | static void vm_error_bad_instruction (scm_t_uint32 inst) SCM_NORETURN SCM_NOINLINE; |
376 | static void vm_error_unbound (SCM proc, SCM sym) SCM_NORETURN SCM_NOINLINE; | |
377 | static void vm_error_unbound_fluid (SCM proc, SCM fluid) SCM_NORETURN SCM_NOINLINE; | |
378 | static void vm_error_not_a_variable (const char *func_name, SCM x) SCM_NORETURN SCM_NOINLINE; | |
379 | static void vm_error_apply_to_non_list (SCM x) SCM_NORETURN SCM_NOINLINE; | |
380 | static void vm_error_kwargs_length_not_even (SCM proc) SCM_NORETURN SCM_NOINLINE; | |
28d5d253 MW |
381 | static void vm_error_kwargs_invalid_keyword (SCM proc, SCM obj) SCM_NORETURN SCM_NOINLINE; |
382 | static void vm_error_kwargs_unrecognized_keyword (SCM proc, SCM kw) SCM_NORETURN SCM_NOINLINE; | |
4d497b62 AW |
383 | static void vm_error_too_many_args (int nargs) SCM_NORETURN SCM_NOINLINE; |
384 | static void vm_error_wrong_num_args (SCM proc) SCM_NORETURN SCM_NOINLINE; | |
385 | static void vm_error_wrong_type_apply (SCM proc) SCM_NORETURN SCM_NOINLINE; | |
386 | static void vm_error_stack_overflow (struct scm_vm *vp) SCM_NORETURN SCM_NOINLINE; | |
387 | static void vm_error_stack_underflow (void) SCM_NORETURN SCM_NOINLINE; | |
388 | static void vm_error_improper_list (SCM x) SCM_NORETURN SCM_NOINLINE; | |
389 | static void vm_error_not_a_pair (const char *subr, SCM x) SCM_NORETURN SCM_NOINLINE; | |
390 | static void vm_error_not_a_bytevector (const char *subr, SCM x) SCM_NORETURN SCM_NOINLINE; | |
391 | static void vm_error_not_a_struct (const char *subr, SCM x) SCM_NORETURN SCM_NOINLINE; | |
392 | static void vm_error_no_values (void) SCM_NORETURN SCM_NOINLINE; | |
393 | static void vm_error_not_enough_values (void) SCM_NORETURN SCM_NOINLINE; | |
82f4bac4 | 394 | static void vm_error_wrong_number_of_values (scm_t_uint32 expected) SCM_NORETURN SCM_NOINLINE; |
4d497b62 AW |
395 | static void vm_error_continuation_not_rewindable (SCM cont) SCM_NORETURN SCM_NOINLINE; |
396 | static void vm_error_bad_wide_string_length (size_t len) SCM_NORETURN SCM_NOINLINE; | |
53bdfcf0 AW |
397 | |
398 | static void | |
399 | vm_error (const char *msg, SCM arg) | |
400 | { | |
401 | scm_throw (sym_vm_error, | |
402 | scm_list_3 (sym_vm_run, scm_from_latin1_string (msg), | |
403 | SCM_UNBNDP (arg) ? SCM_EOL : scm_list_1 (arg))); | |
404 | abort(); /* not reached */ | |
405 | } | |
406 | ||
407 | static void | |
408 | vm_error_bad_instruction (scm_t_uint32 inst) | |
409 | { | |
410 | vm_error ("VM: Bad instruction: ~s", scm_from_uint32 (inst)); | |
411 | } | |
412 | ||
413 | static void | |
414 | vm_error_unbound (SCM proc, SCM sym) | |
415 | { | |
416 | scm_error_scm (scm_misc_error_key, proc, | |
417 | scm_from_latin1_string ("Unbound variable: ~s"), | |
418 | scm_list_1 (sym), SCM_BOOL_F); | |
419 | } | |
420 | ||
421 | static void | |
422 | vm_error_unbound_fluid (SCM proc, SCM fluid) | |
423 | { | |
424 | scm_error_scm (scm_misc_error_key, proc, | |
425 | scm_from_latin1_string ("Unbound fluid: ~s"), | |
426 | scm_list_1 (fluid), SCM_BOOL_F); | |
427 | } | |
428 | ||
429 | static void | |
430 | vm_error_not_a_variable (const char *func_name, SCM x) | |
431 | { | |
432 | scm_error (scm_arg_type_key, func_name, "Not a variable: ~S", | |
433 | scm_list_1 (x), scm_list_1 (x)); | |
434 | } | |
435 | ||
53bdfcf0 AW |
436 | static void |
437 | vm_error_apply_to_non_list (SCM x) | |
438 | { | |
439 | scm_error (scm_arg_type_key, "apply", "Apply to non-list: ~S", | |
440 | scm_list_1 (x), scm_list_1 (x)); | |
441 | } | |
442 | ||
443 | static void | |
444 | vm_error_kwargs_length_not_even (SCM proc) | |
445 | { | |
446 | scm_error_scm (sym_keyword_argument_error, proc, | |
447 | scm_from_latin1_string ("Odd length of keyword argument list"), | |
448 | SCM_EOL, SCM_BOOL_F); | |
449 | } | |
450 | ||
451 | static void | |
4af0d97e | 452 | vm_error_kwargs_invalid_keyword (SCM proc, SCM obj) |
53bdfcf0 AW |
453 | { |
454 | scm_error_scm (sym_keyword_argument_error, proc, | |
455 | scm_from_latin1_string ("Invalid keyword"), | |
4af0d97e | 456 | SCM_EOL, scm_list_1 (obj)); |
53bdfcf0 AW |
457 | } |
458 | ||
459 | static void | |
4af0d97e | 460 | vm_error_kwargs_unrecognized_keyword (SCM proc, SCM kw) |
53bdfcf0 AW |
461 | { |
462 | scm_error_scm (sym_keyword_argument_error, proc, | |
463 | scm_from_latin1_string ("Unrecognized keyword"), | |
4af0d97e | 464 | SCM_EOL, scm_list_1 (kw)); |
53bdfcf0 AW |
465 | } |
466 | ||
467 | static void | |
468 | vm_error_too_many_args (int nargs) | |
469 | { | |
470 | vm_error ("VM: Too many arguments", scm_from_int (nargs)); | |
471 | } | |
472 | ||
473 | static void | |
474 | vm_error_wrong_num_args (SCM proc) | |
475 | { | |
476 | scm_wrong_num_args (proc); | |
477 | } | |
478 | ||
479 | static void | |
480 | vm_error_wrong_type_apply (SCM proc) | |
481 | { | |
482 | scm_error (scm_arg_type_key, NULL, "Wrong type to apply: ~S", | |
483 | scm_list_1 (proc), scm_list_1 (proc)); | |
484 | } | |
485 | ||
486 | static void | |
487 | vm_error_stack_overflow (struct scm_vm *vp) | |
488 | { | |
489 | if (vp->stack_limit < vp->stack_base + vp->stack_size) | |
490 | /* There are VM_STACK_RESERVE_SIZE bytes left. Make them available so | |
491 | that `throw' below can run on this VM. */ | |
492 | vp->stack_limit = vp->stack_base + vp->stack_size; | |
493 | else | |
494 | /* There is no space left on the stack. FIXME: Do something more | |
495 | sensible here! */ | |
496 | abort (); | |
497 | vm_error ("VM: Stack overflow", SCM_UNDEFINED); | |
498 | } | |
499 | ||
500 | static void | |
501 | vm_error_stack_underflow (void) | |
502 | { | |
503 | vm_error ("VM: Stack underflow", SCM_UNDEFINED); | |
504 | } | |
505 | ||
506 | static void | |
507 | vm_error_improper_list (SCM x) | |
508 | { | |
509 | vm_error ("Expected a proper list, but got object with tail ~s", x); | |
510 | } | |
511 | ||
512 | static void | |
513 | vm_error_not_a_pair (const char *subr, SCM x) | |
514 | { | |
515 | scm_wrong_type_arg_msg (subr, 1, x, "pair"); | |
516 | } | |
517 | ||
518 | static void | |
519 | vm_error_not_a_bytevector (const char *subr, SCM x) | |
520 | { | |
521 | scm_wrong_type_arg_msg (subr, 1, x, "bytevector"); | |
522 | } | |
523 | ||
524 | static void | |
525 | vm_error_not_a_struct (const char *subr, SCM x) | |
526 | { | |
527 | scm_wrong_type_arg_msg (subr, 1, x, "struct"); | |
528 | } | |
529 | ||
530 | static void | |
531 | vm_error_no_values (void) | |
532 | { | |
533 | vm_error ("Zero values returned to single-valued continuation", | |
534 | SCM_UNDEFINED); | |
535 | } | |
536 | ||
537 | static void | |
538 | vm_error_not_enough_values (void) | |
539 | { | |
540 | vm_error ("Too few values returned to continuation", SCM_UNDEFINED); | |
541 | } | |
542 | ||
82f4bac4 AW |
543 | static void |
544 | vm_error_wrong_number_of_values (scm_t_uint32 expected) | |
545 | { | |
546 | vm_error ("Wrong number of values returned to continuation (expected ~a)", | |
547 | scm_from_uint32 (expected)); | |
548 | } | |
549 | ||
53bdfcf0 AW |
550 | static void |
551 | vm_error_continuation_not_rewindable (SCM cont) | |
552 | { | |
553 | vm_error ("Unrewindable partial continuation", cont); | |
554 | } | |
555 | ||
556 | static void | |
557 | vm_error_bad_wide_string_length (size_t len) | |
558 | { | |
559 | vm_error ("VM: Bad wide string length: ~S", scm_from_size_t (len)); | |
560 | } | |
561 | ||
53bdfcf0 AW |
562 | |
563 | \f | |
28b119ee | 564 | |
ef6b7f71 | 565 | static SCM vm_boot_continuation; |
486013d6 AW |
566 | static SCM vm_builtin_apply; |
567 | static SCM vm_builtin_values; | |
568 | static SCM vm_builtin_abort_to_prompt; | |
569 | static SCM vm_builtin_call_with_values; | |
570 | static SCM vm_builtin_call_with_current_continuation; | |
510ca126 | 571 | |
ef6b7f71 | 572 | static const scm_t_uint32 vm_boot_continuation_code[] = { |
095100bb | 573 | SCM_PACK_OP_24 (halt, 0) |
510ca126 AW |
574 | }; |
575 | ||
486013d6 | 576 | static const scm_t_uint32 vm_builtin_apply_code[] = { |
095100bb AW |
577 | SCM_PACK_OP_24 (assert_nargs_ge, 3), |
578 | SCM_PACK_OP_24 (tail_apply, 0), /* proc in r1, args from r2 */ | |
510ca126 AW |
579 | }; |
580 | ||
486013d6 | 581 | static const scm_t_uint32 vm_builtin_values_code[] = { |
095100bb | 582 | SCM_PACK_OP_24 (return_values, 0) /* vals from r1 */ |
510ca126 AW |
583 | }; |
584 | ||
486013d6 | 585 | static const scm_t_uint32 vm_builtin_abort_to_prompt_code[] = { |
095100bb AW |
586 | SCM_PACK_OP_24 (assert_nargs_ge, 2), |
587 | SCM_PACK_OP_24 (abort, 0), /* tag in r1, vals from r2 */ | |
486013d6 | 588 | /* FIXME: Partial continuation should capture caller regs. */ |
095100bb | 589 | SCM_PACK_OP_24 (return_values, 0) /* vals from r1 */ |
486013d6 AW |
590 | }; |
591 | ||
592 | static const scm_t_uint32 vm_builtin_call_with_values_code[] = { | |
095100bb AW |
593 | SCM_PACK_OP_24 (assert_nargs_ee, 3), |
594 | SCM_PACK_OP_24 (alloc_frame, 7), | |
595 | SCM_PACK_OP_12_12 (mov, 6, 1), | |
596 | SCM_PACK_OP_24 (call, 6), SCM_PACK_OP_ARG_8_24 (0, 1), | |
597 | SCM_PACK_OP_12_12 (mov, 0, 2), | |
598 | SCM_PACK_OP_24 (tail_call_shuffle, 7) | |
486013d6 AW |
599 | }; |
600 | ||
601 | static const scm_t_uint32 vm_builtin_call_with_current_continuation_code[] = { | |
095100bb AW |
602 | SCM_PACK_OP_24 (assert_nargs_ee, 2), |
603 | SCM_PACK_OP_24 (call_cc, 0) | |
486013d6 AW |
604 | }; |
605 | ||
606 | ||
607 | static SCM | |
608 | scm_vm_builtin_ref (unsigned idx) | |
609 | { | |
610 | switch (idx) | |
611 | { | |
9f309e2c | 612 | #define INDEX_TO_NAME(builtin, BUILTIN, req, opt, rest) \ |
486013d6 AW |
613 | case SCM_VM_BUILTIN_##BUILTIN: return vm_builtin_##builtin; |
614 | FOR_EACH_VM_BUILTIN(INDEX_TO_NAME) | |
615 | #undef INDEX_TO_NAME | |
616 | default: abort(); | |
617 | } | |
618 | } | |
619 | ||
9f309e2c | 620 | SCM scm_sym_apply; |
486013d6 AW |
621 | static SCM scm_sym_values; |
622 | static SCM scm_sym_abort_to_prompt; | |
623 | static SCM scm_sym_call_with_values; | |
624 | static SCM scm_sym_call_with_current_continuation; | |
625 | ||
626 | SCM | |
627 | scm_vm_builtin_name_to_index (SCM name) | |
628 | #define FUNC_NAME "builtin-name->index" | |
629 | { | |
630 | SCM_VALIDATE_SYMBOL (1, name); | |
631 | ||
9f309e2c | 632 | #define NAME_TO_INDEX(builtin, BUILTIN, req, opt, rest) \ |
486013d6 AW |
633 | if (scm_is_eq (name, scm_sym_##builtin)) \ |
634 | return scm_from_uint (SCM_VM_BUILTIN_##BUILTIN); | |
635 | FOR_EACH_VM_BUILTIN(NAME_TO_INDEX) | |
636 | #undef NAME_TO_INDEX | |
637 | ||
638 | return SCM_BOOL_F; | |
639 | } | |
640 | #undef FUNC_NAME | |
641 | ||
642 | SCM | |
643 | scm_vm_builtin_index_to_name (SCM index) | |
644 | #define FUNC_NAME "builtin-index->name" | |
645 | { | |
646 | unsigned idx; | |
647 | ||
648 | SCM_VALIDATE_UINT_COPY (1, index, idx); | |
649 | ||
650 | switch (idx) | |
651 | { | |
9f309e2c | 652 | #define INDEX_TO_NAME(builtin, BUILTIN, req, opt, rest) \ |
486013d6 AW |
653 | case SCM_VM_BUILTIN_##BUILTIN: return scm_sym_##builtin; |
654 | FOR_EACH_VM_BUILTIN(INDEX_TO_NAME) | |
655 | #undef INDEX_TO_NAME | |
656 | default: return SCM_BOOL_F; | |
657 | } | |
658 | } | |
659 | #undef FUNC_NAME | |
660 | ||
661 | static void | |
662 | scm_init_vm_builtins (void) | |
663 | { | |
486013d6 AW |
664 | scm_c_define_gsubr ("builtin-name->index", 1, 0, 0, |
665 | scm_vm_builtin_name_to_index); | |
666 | scm_c_define_gsubr ("builtin-index->name", 1, 0, 0, | |
667 | scm_vm_builtin_index_to_name); | |
668 | } | |
669 | ||
670 | SCM | |
671 | scm_i_call_with_current_continuation (SCM proc) | |
672 | { | |
673 | return scm_call_1 (vm_builtin_call_with_current_continuation, proc); | |
674 | } | |
510ca126 | 675 | |
a98cef7e KN |
676 | \f |
677 | /* | |
678 | * VM | |
679 | */ | |
680 | ||
aab9d46c | 681 | #define VM_MIN_STACK_SIZE (1024) |
486013d6 | 682 | #define VM_DEFAULT_STACK_SIZE (256 * 1024) |
aab9d46c SIT |
683 | static size_t vm_stack_size = VM_DEFAULT_STACK_SIZE; |
684 | ||
685 | static void | |
686 | initialize_default_stack_size (void) | |
687 | { | |
688 | int size = scm_getenv_int ("GUILE_STACK_SIZE", vm_stack_size); | |
689 | if (size >= VM_MIN_STACK_SIZE) | |
690 | vm_stack_size = size; | |
691 | } | |
17e90c5e | 692 | |
f42cfbf0 AW |
693 | #define VM_NAME vm_regular_engine |
694 | #define VM_USE_HOOKS 0 | |
6d14383e | 695 | #define FUNC_NAME "vm-regular-engine" |
83495480 | 696 | #include "vm-engine.c" |
6d14383e | 697 | #undef FUNC_NAME |
f42cfbf0 AW |
698 | #undef VM_USE_HOOKS |
699 | #undef VM_NAME | |
17e90c5e | 700 | |
f42cfbf0 AW |
701 | #define VM_NAME vm_debug_engine |
702 | #define VM_USE_HOOKS 1 | |
6d14383e | 703 | #define FUNC_NAME "vm-debug-engine" |
83495480 | 704 | #include "vm-engine.c" |
6d14383e | 705 | #undef FUNC_NAME |
f42cfbf0 AW |
706 | #undef VM_USE_HOOKS |
707 | #undef VM_NAME | |
17e90c5e | 708 | |
dd1c7dec AW |
709 | typedef SCM (*scm_t_vm_engine) (scm_i_thread *current_thread, struct scm_vm *vp, |
710 | scm_i_jmp_buf *registers, int resume); | |
73c3db66 | 711 | |
f42cfbf0 AW |
712 | static const scm_t_vm_engine vm_engines[SCM_VM_NUM_ENGINES] = |
713 | { vm_regular_engine, vm_debug_engine }; | |
73c3db66 | 714 | |
e3eb628d LC |
715 | #ifdef VM_ENABLE_PRECISE_STACK_GC_SCAN |
716 | ||
717 | /* The GC "kind" for the VM stack. */ | |
718 | static int vm_stack_gc_kind; | |
719 | ||
720 | #endif | |
721 | ||
3506b152 | 722 | static struct scm_vm * |
17e90c5e KN |
723 | make_vm (void) |
724 | #define FUNC_NAME "make_vm" | |
a98cef7e | 725 | { |
17e90c5e | 726 | int i; |
7f991c7d | 727 | struct scm_vm *vp; |
747a1635 | 728 | |
7f991c7d | 729 | vp = scm_gc_malloc (sizeof (struct scm_vm), "vm"); |
d8eeb67c | 730 | |
aab9d46c | 731 | vp->stack_size= vm_stack_size; |
e3eb628d LC |
732 | |
733 | #ifdef VM_ENABLE_PRECISE_STACK_GC_SCAN | |
4168aa46 TTN |
734 | vp->stack_base = (SCM *) |
735 | GC_generic_malloc (vp->stack_size * sizeof (SCM), vm_stack_gc_kind); | |
e3eb628d LC |
736 | |
737 | /* Keep a pointer to VP so that `vm_stack_mark ()' can know what the stack | |
738 | top is. */ | |
21041372 | 739 | *vp->stack_base = SCM_PACK_POINTER (vp); |
e3eb628d LC |
740 | vp->stack_base++; |
741 | vp->stack_size--; | |
742 | #else | |
d8eeb67c LC |
743 | vp->stack_base = scm_gc_malloc (vp->stack_size * sizeof (SCM), |
744 | "stack-base"); | |
e3eb628d LC |
745 | #endif |
746 | ||
f1046e6b | 747 | vp->stack_limit = vp->stack_base + vp->stack_size - VM_STACK_RESERVE_SIZE; |
3616e9e9 KN |
748 | vp->ip = NULL; |
749 | vp->sp = vp->stack_base - 1; | |
750 | vp->fp = NULL; | |
ea9f4f4b | 751 | vp->engine = vm_default_engine; |
7656f194 | 752 | vp->trace_level = 0; |
17e90c5e | 753 | for (i = 0; i < SCM_VM_NUM_HOOKS; i++) |
3d5ee0cd | 754 | vp->hooks[i] = SCM_BOOL_F; |
3506b152 AW |
755 | |
756 | return vp; | |
a98cef7e | 757 | } |
17e90c5e | 758 | #undef FUNC_NAME |
a98cef7e | 759 | |
e3eb628d LC |
760 | #ifdef VM_ENABLE_PRECISE_STACK_GC_SCAN |
761 | ||
762 | /* Mark the VM stack region between its base and its current top. */ | |
763 | static struct GC_ms_entry * | |
764 | vm_stack_mark (GC_word *addr, struct GC_ms_entry *mark_stack_ptr, | |
765 | struct GC_ms_entry *mark_stack_limit, GC_word env) | |
766 | { | |
767 | GC_word *word; | |
768 | const struct scm_vm *vm; | |
769 | ||
770 | /* The first word of the VM stack should contain a pointer to the | |
771 | corresponding VM. */ | |
772 | vm = * ((struct scm_vm **) addr); | |
773 | ||
8071c490 | 774 | if (vm == NULL |
f1046e6b | 775 | || (SCM *) addr != vm->stack_base - 1) |
e3eb628d LC |
776 | /* ADDR must be a pointer to a free-list element, which we must ignore |
777 | (see warning in <gc/gc_mark.h>). */ | |
778 | return mark_stack_ptr; | |
779 | ||
e3eb628d LC |
780 | for (word = (GC_word *) vm->stack_base; word <= (GC_word *) vm->sp; word++) |
781 | mark_stack_ptr = GC_MARK_AND_PUSH ((* (GC_word **) word), | |
782 | mark_stack_ptr, mark_stack_limit, | |
783 | NULL); | |
784 | ||
785 | return mark_stack_ptr; | |
786 | } | |
787 | ||
788 | #endif /* VM_ENABLE_PRECISE_STACK_GC_SCAN */ | |
789 | ||
790 | ||
b85cd20f AW |
791 | static struct scm_vm * |
792 | thread_vm (scm_i_thread *t) | |
55ee3607 | 793 | { |
b85cd20f AW |
794 | if (SCM_UNLIKELY (!t->vp)) |
795 | t->vp = make_vm (); | |
796 | ||
797 | return t->vp; | |
55ee3607 AW |
798 | } |
799 | ||
e7f9abab | 800 | struct scm_vm * |
a222cbc9 | 801 | scm_the_vm (void) |
271c3d31 | 802 | { |
b85cd20f AW |
803 | return thread_vm (SCM_I_CURRENT_THREAD); |
804 | } | |
ea9f4f4b | 805 | |
b85cd20f AW |
806 | SCM |
807 | scm_call_n (SCM proc, SCM *argv, size_t nargs) | |
808 | { | |
809 | scm_i_thread *thread; | |
810 | struct scm_vm *vp; | |
bd63e5b2 AW |
811 | SCM *base; |
812 | ptrdiff_t base_frame_size; | |
dd1c7dec AW |
813 | /* Cached variables. */ |
814 | scm_i_jmp_buf registers; /* used for prompts */ | |
bd63e5b2 | 815 | size_t i; |
ea9f4f4b | 816 | |
b85cd20f AW |
817 | thread = SCM_I_CURRENT_THREAD; |
818 | vp = thread_vm (thread); | |
819 | ||
820 | SCM_CHECK_STACK; | |
bd63e5b2 AW |
821 | |
822 | /* Check that we have enough space: 3 words for the boot | |
823 | continuation, 3 + nargs for the procedure application, and 3 for | |
824 | setting up a new frame. */ | |
825 | base_frame_size = 3 + 3 + nargs + 3; | |
826 | vp->sp += base_frame_size; | |
827 | if (vp->sp >= vp->stack_limit) | |
828 | vm_error_stack_overflow (vp); | |
829 | base = vp->sp + 1 - base_frame_size; | |
830 | ||
831 | /* Since it's possible to receive the arguments on the stack itself, | |
832 | shuffle up the arguments first. */ | |
833 | for (i = nargs; i > 0; i--) | |
834 | base[6 + i - 1] = argv[i - 1]; | |
835 | ||
836 | /* Push the boot continuation, which calls PROC and returns its | |
837 | result(s). */ | |
838 | base[0] = SCM_PACK (vp->fp); /* dynamic link */ | |
839 | base[1] = SCM_PACK (vp->ip); /* ra */ | |
840 | base[2] = vm_boot_continuation; | |
841 | vp->fp = &base[2]; | |
842 | vp->ip = (scm_t_uint32 *) vm_boot_continuation_code; | |
843 | ||
844 | /* The pending call to PROC. */ | |
845 | base[3] = SCM_PACK (vp->fp); /* dynamic link */ | |
846 | base[4] = SCM_PACK (vp->ip); /* ra */ | |
847 | base[5] = proc; | |
848 | vp->fp = &base[5]; | |
849 | vp->sp = &SCM_FRAME_LOCAL (vp->fp, nargs); | |
850 | ||
dd1c7dec AW |
851 | { |
852 | int resume = SCM_I_SETJMP (registers); | |
853 | ||
854 | if (SCM_UNLIKELY (resume)) | |
855 | /* Non-local return. */ | |
856 | vm_dispatch_abort_hook (vp); | |
857 | ||
858 | return vm_engines[vp->engine](thread, vp, ®isters, resume); | |
859 | } | |
271c3d31 | 860 | } |
499a4c07 | 861 | |
a222cbc9 | 862 | /* Scheme interface */ |
a98cef7e | 863 | |
17e90c5e KN |
864 | #define VM_DEFINE_HOOK(n) \ |
865 | { \ | |
3d5ee0cd | 866 | struct scm_vm *vp; \ |
e7f9abab | 867 | vp = scm_the_vm (); \ |
8b22ed7a | 868 | if (scm_is_false (vp->hooks[n])) \ |
238e7a11 | 869 | vp->hooks[n] = scm_make_hook (SCM_I_MAKINUM (1)); \ |
3d5ee0cd | 870 | return vp->hooks[n]; \ |
17e90c5e KN |
871 | } |
872 | ||
972275ee AW |
873 | SCM_DEFINE (scm_vm_apply_hook, "vm-apply-hook", 0, 0, 0, |
874 | (void), | |
17e90c5e | 875 | "") |
c45d4d77 | 876 | #define FUNC_NAME s_scm_vm_apply_hook |
a98cef7e | 877 | { |
c45d4d77 | 878 | VM_DEFINE_HOOK (SCM_VM_APPLY_HOOK); |
a98cef7e KN |
879 | } |
880 | #undef FUNC_NAME | |
881 | ||
972275ee AW |
882 | SCM_DEFINE (scm_vm_push_continuation_hook, "vm-push-continuation-hook", 0, 0, 0, |
883 | (void), | |
17e90c5e | 884 | "") |
c45d4d77 | 885 | #define FUNC_NAME s_scm_vm_push_continuation_hook |
a98cef7e | 886 | { |
c45d4d77 | 887 | VM_DEFINE_HOOK (SCM_VM_PUSH_CONTINUATION_HOOK); |
a98cef7e KN |
888 | } |
889 | #undef FUNC_NAME | |
890 | ||
972275ee AW |
891 | SCM_DEFINE (scm_vm_pop_continuation_hook, "vm-pop-continuation-hook", 0, 0, 0, |
892 | (void), | |
17e90c5e | 893 | "") |
c45d4d77 | 894 | #define FUNC_NAME s_scm_vm_pop_continuation_hook |
a98cef7e | 895 | { |
c45d4d77 | 896 | VM_DEFINE_HOOK (SCM_VM_POP_CONTINUATION_HOOK); |
a98cef7e KN |
897 | } |
898 | #undef FUNC_NAME | |
899 | ||
972275ee AW |
900 | SCM_DEFINE (scm_vm_next_hook, "vm-next-hook", 0, 0, 0, |
901 | (void), | |
17e90c5e | 902 | "") |
c45d4d77 | 903 | #define FUNC_NAME s_scm_vm_next_hook |
a98cef7e | 904 | { |
c45d4d77 | 905 | VM_DEFINE_HOOK (SCM_VM_NEXT_HOOK); |
a98cef7e KN |
906 | } |
907 | #undef FUNC_NAME | |
f3120251 | 908 | |
972275ee AW |
909 | SCM_DEFINE (scm_vm_abort_continuation_hook, "vm-abort-continuation-hook", 0, 0, 0, |
910 | (void), | |
f3120251 AW |
911 | "") |
912 | #define FUNC_NAME s_scm_vm_abort_continuation_hook | |
913 | { | |
914 | VM_DEFINE_HOOK (SCM_VM_ABORT_CONTINUATION_HOOK); | |
915 | } | |
916 | #undef FUNC_NAME | |
917 | ||
972275ee AW |
918 | SCM_DEFINE (scm_vm_restore_continuation_hook, "vm-restore-continuation-hook", 0, 0, 0, |
919 | (void), | |
f3120251 AW |
920 | "") |
921 | #define FUNC_NAME s_scm_vm_restore_continuation_hook | |
922 | { | |
923 | VM_DEFINE_HOOK (SCM_VM_RESTORE_CONTINUATION_HOOK); | |
924 | } | |
925 | #undef FUNC_NAME | |
a98cef7e | 926 | |
972275ee AW |
927 | SCM_DEFINE (scm_vm_trace_level, "vm-trace-level", 0, 0, 0, |
928 | (void), | |
17e90c5e | 929 | "") |
7656f194 | 930 | #define FUNC_NAME s_scm_vm_trace_level |
a98cef7e | 931 | { |
e7f9abab | 932 | return scm_from_int (scm_the_vm ()->trace_level); |
7656f194 AW |
933 | } |
934 | #undef FUNC_NAME | |
935 | ||
972275ee AW |
936 | SCM_DEFINE (scm_set_vm_trace_level_x, "set-vm-trace-level!", 1, 0, 0, |
937 | (SCM level), | |
7656f194 AW |
938 | "") |
939 | #define FUNC_NAME s_scm_set_vm_trace_level_x | |
940 | { | |
e7f9abab | 941 | scm_the_vm ()->trace_level = scm_to_int (level); |
7656f194 | 942 | return SCM_UNSPECIFIED; |
a98cef7e KN |
943 | } |
944 | #undef FUNC_NAME | |
945 | ||
946 | \f | |
ea9f4f4b AW |
947 | /* |
948 | * VM engines | |
949 | */ | |
950 | ||
951 | static int | |
952 | symbol_to_vm_engine (SCM engine, const char *FUNC_NAME) | |
953 | { | |
954 | if (scm_is_eq (engine, sym_regular)) | |
955 | return SCM_VM_REGULAR_ENGINE; | |
956 | else if (scm_is_eq (engine, sym_debug)) | |
957 | return SCM_VM_DEBUG_ENGINE; | |
958 | else | |
959 | SCM_MISC_ERROR ("Unknown VM engine: ~a", scm_list_1 (engine)); | |
960 | } | |
961 | ||
962 | static SCM | |
963 | vm_engine_to_symbol (int engine, const char *FUNC_NAME) | |
964 | { | |
965 | switch (engine) | |
966 | { | |
967 | case SCM_VM_REGULAR_ENGINE: | |
968 | return sym_regular; | |
969 | case SCM_VM_DEBUG_ENGINE: | |
970 | return sym_debug; | |
971 | default: | |
972 | /* ? */ | |
973 | SCM_MISC_ERROR ("Unknown VM engine: ~a", | |
974 | scm_list_1 (scm_from_int (engine))); | |
975 | } | |
976 | } | |
977 | ||
972275ee AW |
978 | SCM_DEFINE (scm_vm_engine, "vm-engine", 0, 0, 0, |
979 | (void), | |
ea9f4f4b AW |
980 | "") |
981 | #define FUNC_NAME s_scm_vm_engine | |
982 | { | |
e7f9abab | 983 | return vm_engine_to_symbol (scm_the_vm ()->engine, FUNC_NAME); |
ea9f4f4b AW |
984 | } |
985 | #undef FUNC_NAME | |
986 | ||
987 | void | |
972275ee | 988 | scm_c_set_vm_engine_x (int engine) |
ea9f4f4b AW |
989 | #define FUNC_NAME "set-vm-engine!" |
990 | { | |
ea9f4f4b AW |
991 | if (engine < 0 || engine >= SCM_VM_NUM_ENGINES) |
992 | SCM_MISC_ERROR ("Unknown VM engine: ~a", | |
993 | scm_list_1 (scm_from_int (engine))); | |
994 | ||
e7f9abab | 995 | scm_the_vm ()->engine = engine; |
ea9f4f4b AW |
996 | } |
997 | #undef FUNC_NAME | |
998 | ||
972275ee AW |
999 | SCM_DEFINE (scm_set_vm_engine_x, "set-vm-engine!", 1, 0, 0, |
1000 | (SCM engine), | |
ea9f4f4b AW |
1001 | "") |
1002 | #define FUNC_NAME s_scm_set_vm_engine_x | |
1003 | { | |
972275ee | 1004 | scm_c_set_vm_engine_x (symbol_to_vm_engine (engine, FUNC_NAME)); |
ea9f4f4b AW |
1005 | return SCM_UNSPECIFIED; |
1006 | } | |
1007 | #undef FUNC_NAME | |
1008 | ||
1009 | void | |
1010 | scm_c_set_default_vm_engine_x (int engine) | |
1011 | #define FUNC_NAME "set-default-vm-engine!" | |
1012 | { | |
1013 | if (engine < 0 || engine >= SCM_VM_NUM_ENGINES) | |
1014 | SCM_MISC_ERROR ("Unknown VM engine: ~a", | |
1015 | scm_list_1 (scm_from_int (engine))); | |
1016 | ||
1017 | vm_default_engine = engine; | |
1018 | } | |
1019 | #undef FUNC_NAME | |
1020 | ||
1021 | SCM_DEFINE (scm_set_default_vm_engine_x, "set-default-vm-engine!", 1, 0, 0, | |
1022 | (SCM engine), | |
1023 | "") | |
1024 | #define FUNC_NAME s_scm_set_default_vm_engine_x | |
1025 | { | |
1026 | scm_c_set_default_vm_engine_x (symbol_to_vm_engine (engine, FUNC_NAME)); | |
1027 | return SCM_UNSPECIFIED; | |
1028 | } | |
1029 | #undef FUNC_NAME | |
1030 | ||
972275ee AW |
1031 | /* FIXME: This function makes no sense, but we keep it to make sure we |
1032 | have a way of switching to the debug or regular VM. */ | |
1033 | SCM_DEFINE (scm_call_with_vm, "call-with-vm", 1, 0, 1, | |
1034 | (SCM proc, SCM args), | |
ea9f4f4b | 1035 | "Apply @var{proc} to @var{args} in a dynamic extent in which\n" |
972275ee | 1036 | "@var{vm} is the current VM.") |
ea9f4f4b AW |
1037 | #define FUNC_NAME s_scm_call_with_vm |
1038 | { | |
972275ee | 1039 | return scm_apply_0 (proc, args); |
ea9f4f4b AW |
1040 | } |
1041 | #undef FUNC_NAME | |
1042 | ||
1043 | \f | |
a98cef7e | 1044 | /* |
17e90c5e | 1045 | * Initialize |
a98cef7e KN |
1046 | */ |
1047 | ||
55ee3607 AW |
1048 | SCM |
1049 | scm_load_compiled_with_vm (SCM file) | |
07e56b27 | 1050 | { |
55ee3607 | 1051 | return scm_call_0 (scm_load_thunk_from_file (file)); |
07e56b27 AW |
1052 | } |
1053 | ||
67b699cc | 1054 | |
9f309e2c AW |
1055 | void |
1056 | scm_init_vm_builtin_properties (void) | |
1057 | { | |
1058 | /* FIXME: Seems hacky to do this here, but oh well :/ */ | |
1059 | scm_sym_apply = scm_from_utf8_symbol ("apply"); | |
1060 | scm_sym_values = scm_from_utf8_symbol ("values"); | |
1061 | scm_sym_abort_to_prompt = scm_from_utf8_symbol ("abort-to-prompt"); | |
1062 | scm_sym_call_with_values = scm_from_utf8_symbol ("call-with-values"); | |
1063 | scm_sym_call_with_current_continuation = | |
1064 | scm_from_utf8_symbol ("call-with-current-continuation"); | |
1065 | ||
1066 | #define INIT_BUILTIN(builtin, BUILTIN, req, opt, rest) \ | |
1067 | scm_set_procedure_property_x (vm_builtin_##builtin, scm_sym_name, \ | |
1068 | scm_sym_##builtin); \ | |
1069 | scm_set_procedure_minimum_arity_x (vm_builtin_##builtin, \ | |
1070 | SCM_I_MAKINUM (req), \ | |
1071 | SCM_I_MAKINUM (opt), \ | |
1072 | scm_from_bool (rest)); | |
1073 | FOR_EACH_VM_BUILTIN (INIT_BUILTIN); | |
1074 | #undef INIT_BUILTIN | |
1075 | } | |
1076 | ||
17e90c5e | 1077 | void |
07e56b27 | 1078 | scm_bootstrap_vm (void) |
17e90c5e | 1079 | { |
44602b08 AW |
1080 | scm_c_register_extension ("libguile-" SCM_EFFECTIVE_VERSION, |
1081 | "scm_init_vm", | |
60ae5ca2 | 1082 | (scm_t_extension_init_func)scm_init_vm, NULL); |
486013d6 AW |
1083 | scm_c_register_extension ("libguile-" SCM_EFFECTIVE_VERSION, |
1084 | "scm_init_vm_builtins", | |
1085 | (scm_t_extension_init_func)scm_init_vm_builtins, | |
1086 | NULL); | |
60ae5ca2 | 1087 | |
aab9d46c SIT |
1088 | initialize_default_stack_size (); |
1089 | ||
4a655e50 AW |
1090 | sym_vm_run = scm_from_latin1_symbol ("vm-run"); |
1091 | sym_vm_error = scm_from_latin1_symbol ("vm-error"); | |
1092 | sym_keyword_argument_error = scm_from_latin1_symbol ("keyword-argument-error"); | |
1093 | sym_regular = scm_from_latin1_symbol ("regular"); | |
1094 | sym_debug = scm_from_latin1_symbol ("debug"); | |
0404c97d | 1095 | |
ef6b7f71 AW |
1096 | vm_boot_continuation = scm_i_make_program (vm_boot_continuation_code); |
1097 | SCM_SET_CELL_WORD_0 (vm_boot_continuation, | |
1098 | (SCM_CELL_WORD_0 (vm_boot_continuation) | |
73c3db66 | 1099 | | SCM_F_PROGRAM_IS_BOOT)); |
9f309e2c AW |
1100 | |
1101 | #define DEFINE_BUILTIN(builtin, BUILTIN, req, opt, rest) \ | |
80797145 | 1102 | vm_builtin_##builtin = scm_i_make_program (vm_builtin_##builtin##_code); |
9f309e2c AW |
1103 | FOR_EACH_VM_BUILTIN (DEFINE_BUILTIN); |
1104 | #undef DEFINE_BUILTIN | |
73c3db66 | 1105 | |
e3eb628d LC |
1106 | #ifdef VM_ENABLE_PRECISE_STACK_GC_SCAN |
1107 | vm_stack_gc_kind = | |
1108 | GC_new_kind (GC_new_free_list (), | |
1109 | GC_MAKE_PROC (GC_new_proc (vm_stack_mark), 0), | |
1110 | 0, 1); | |
1111 | ||
1112 | #endif | |
07e56b27 AW |
1113 | } |
1114 | ||
1115 | void | |
1116 | scm_init_vm (void) | |
1117 | { | |
17e90c5e | 1118 | #ifndef SCM_MAGIC_SNARFER |
aeeff258 | 1119 | #include "libguile/vm.x" |
17e90c5e | 1120 | #endif |
a98cef7e | 1121 | } |
17e90c5e KN |
1122 | |
1123 | /* | |
1124 | Local Variables: | |
1125 | c-file-style: "gnu" | |
1126 | End: | |
1127 | */ |