/
inter_run.c
424 lines (339 loc) · 10.8 KB
/
inter_run.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
/*
Copyright: 2001-2003 The Perl Foundation. All Rights Reserved.
$Id$
=head1 NAME
src/inter_run.c - Parrot Interpreter - Run Ops and Methods
=head1 DESCRIPTION
Various functions that call the run loop.
=head2 Functions
=over 4
=cut
*/
#include <assert.h>
#include "parrot/parrot.h"
/*
=item C<void
runops(Interp *interpreter, size_t offset)>
Run parrot ops. Set exception handler and/or resume after exception.
=cut
*/
#define STACKED_EXCEPTIONS 1
void
runops(Interp *interpreter, size_t offs)
{
volatile size_t offset = offs;
CONTEXT(interpreter->ctx)->runloop_level++;
/*
* STACKED_EXCEPTIONS are necessary to catch exceptions in reentered
* run loops, e.g. if a delegate methods throws an exception
*/
#if ! STACKED_EXCEPTIONS
if (!interpreter->exceptions)
#endif
{
new_internal_exception(interpreter);
interpreter->exceptions->runloop_level =
CONTEXT(interpreter->ctx)->runloop_level;
if (setjmp(interpreter->exceptions->destination)) {
/* an exception was thrown */
offset = handle_exception(interpreter);
/* update profile for exception execution time */
if (interpreter->profile &&
Interp_flags_TEST(interpreter, PARROT_PROFILE_FLAG)) {
RunProfile *profile = interpreter->profile;
if (profile->cur_op == PARROT_PROF_EXCEPTION) {
profile->data[PARROT_PROF_EXCEPTION].time +=
Parrot_floatval_time() - profile->starttime;
}
}
}
}
/*
* XXX this is broken
* - the runloop_level has to be in the interpreter struct
* - the exception loop level must be part of the exception
* handler
*/
if (1 || interpreter->exceptions->runloop_level ==
CONTEXT(interpreter->ctx)->runloop_level) {
/* if we are coming from an exception and it was thrown deeper
* in a nested run loop, we just leave this loop
*/
runops_int(interpreter, offset);
}
/*
* pop off exception and put it onto the free list
* s. above
*/
if (STACKED_EXCEPTIONS) {
free_internal_exception(interpreter);
}
CONTEXT(interpreter->ctx)->runloop_level--;
/*
* not yet - this needs classifying of exceptions and handlers
* so that only an exit handler does catch this exception
*/
#if 0
do_exception(interpreter, EXCEPT_exit, 0);
#endif
}
/*
=item C<parrot_context_t *
Parrot_runops_fromc(Parrot_Interp interpreter, PMC *sub)>
Runs the Parrot ops, called from C code. The function arguments are
already setup according to Parrot calling conventions, the C<sub> argument
is an invocable C<Sub> PMC.
=cut
*/
parrot_context_t *
Parrot_runops_fromc(Parrot_Interp interpreter, PMC *sub)
{
PMC *ret_c;
opcode_t offset, *dest;
parrot_context_t *ctx;
/* we need one return continuation with a NULL offset */
interpreter->current_cont = ret_c =
new_ret_continuation_pmc(interpreter, NULL);
#if GC_VERBOSE
PObj_report_SET(ret_c); /* s. also dod.c */
#endif
/* invoke the sub, which places the context of the sub in the
* interpreter, and switches code segments if needed
* Passing a dummy true destination copies registers
*/
dest = VTABLE_invoke(interpreter, sub, (void*) 1);
if (!dest)
internal_exception(1, "Subroutine returned a NULL address");
ctx = CONTEXT(interpreter->ctx);
offset = dest - interpreter->code->base.data;
runops(interpreter, offset);
return ctx;
}
static parrot_context_t *
runops_args(Parrot_Interp interpreter, PMC *sub, PMC *obj,
STRING *meth, const char* sig, va_list ap)
{
opcode_t offset, *dest;
parrot_context_t *ctx;
parrot_context_t *old_ctx;
/*
* FIXME argument count limited - check strlen of sig
*/
char new_sig[10];
const char *sig_p;
old_ctx = CONTEXT(interpreter->ctx);
interpreter->current_cont = new_ret_continuation_pmc(interpreter, NULL);
interpreter->current_object = obj;
dest = VTABLE_invoke(interpreter, sub, NULL);
if (!dest)
internal_exception(1, "Subroutine returned a NULL address");
if (PMC_IS_NULL(obj)) {
sig_p = sig + 1;
}
else if (sig[1] == 'O') {
sig_p = sig + 1;
}
else {
size_t len = strlen(sig);
if (len > 8)
internal_exception(1, "too many arguments in runops_args");
new_sig[0] = 'O';
strcpy(new_sig + 1, sig + 1);
sig_p = new_sig;
}
if (*sig_p) {
dest = parrot_pass_args_fromc(interpreter, sig_p, dest,
old_ctx, ap);
}
ctx = CONTEXT(interpreter->ctx);
offset = dest - interpreter->code->base.data;
runops(interpreter, offset);
return ctx;
}
/*
=item C<void *
Parrot_run_meth_fromc(Parrot_Interp, PMC *sub, PMC *obj, STRING *meth)>
Run a method sub from C. The function arguments are
already setup according to Parrot calling conventions, the C<sub> argument
is an invocable C<Sub> PMC.
If registers a PMC return values, it is returned.
=cut
*/
/*
=item C<void *
Parrot_runops_fromc_args(Parrot_Interp interpreter, PMC *sub,
const char *sig, ...)>
=item C<INTVAL
Parrot_runops_fromc_args_reti(Parrot_Interp interpreter, PMC *sub,
const char *sig, ...)>
=item C<FLOATVAL
Parrot_runops_fromc_args_retf(Parrot_Interp interpreter, PMC *sub,
const char *sig, ...)>
=item C<void *
Parrot_runops_fromc_arglist(Parrot_Interp interpreter, PMC *sub,
const char *sig, va_list args)>
=item C<void *
Parrot_run_meth_fromc_args(Parrot_Interp interpreter, PMC *sub,
PMC* obj, STRING* meth, const char *sig, ...)>
=item C<INTVAL
Parrot_run_meth_fromc_args_reti(Parrot_Interp interpreter, PMC *sub,
PMC* obj, STRING* meth, const char *sig, ...)>
=item C<FLOATVAL
Parrot_run_meth_fromc_args_retf(Parrot_Interp interpreter, PMC *sub,
PMC* obj, STRING* meth, const char *sig, ...)>
Run parrot ops, called from C code, function arguments are passed as
C<va_args> according to the signature. The C<sub> argument is an
invocable C<Sub> PMC.
Signatures are similar to NCI:
v ... void return
I ... INTVAL (not Interpreter)
N ... NUMVAL
S ... STRING*
P ... PMC*
=cut
*/
void *
Parrot_run_meth_fromc(Parrot_Interp interpreter,
PMC *sub, PMC *obj, STRING *meth)
{
parrot_context_t *ctx;
opcode_t offset, *dest;
interpreter->current_cont = new_ret_continuation_pmc(interpreter, NULL);
interpreter->current_object = obj;
dest = VTABLE_invoke(interpreter, sub, (void*)1);
if (!dest)
internal_exception(1, "Subroutine returned a NULL address");
ctx = CONTEXT(interpreter->ctx);
offset = dest - interpreter->code->base.data;
runops(interpreter, offset);
return set_retval(interpreter, 0, PMC_sub(sub)->seg, ctx);
}
void *
Parrot_runops_fromc_args(Parrot_Interp interpreter, PMC *sub,
const char *sig, ...)
{
va_list args;
parrot_context_t *ctx;
va_start(args, sig);
ctx = runops_args(interpreter, sub, PMCNULL, NULL, sig, args);
va_end(args);
return set_retval(interpreter, *sig, PMC_sub(sub)->seg, ctx);
}
INTVAL
Parrot_runops_fromc_args_reti(Parrot_Interp interpreter, PMC *sub,
const char *sig, ...)
{
va_list args;
parrot_context_t *ctx;
va_start(args, sig);
ctx = runops_args(interpreter, sub, PMCNULL, NULL, sig, args);
va_end(args);
return set_retval_i(interpreter, *sig, PMC_sub(sub)->seg, ctx);
}
FLOATVAL
Parrot_runops_fromc_args_retf(Parrot_Interp interpreter, PMC *sub,
const char *sig, ...)
{
va_list args;
parrot_context_t *ctx;
va_start(args, sig);
ctx = runops_args(interpreter, sub, PMCNULL, NULL, sig, args);
va_end(args);
return set_retval_f(interpreter, *sig, PMC_sub(sub)->seg, ctx);
}
void*
Parrot_run_meth_fromc_args(Parrot_Interp interpreter,
PMC *sub, PMC *obj, STRING *meth, const char *sig, ...)
{
va_list args;
parrot_context_t *ctx;
va_start(args, sig);
ctx = runops_args(interpreter, sub, obj, meth, sig, args);
va_end(args);
return set_retval(interpreter, *sig, PMC_sub(sub)->seg, ctx);
}
INTVAL
Parrot_run_meth_fromc_args_reti(Parrot_Interp interpreter,
PMC *sub, PMC *obj, STRING *meth, const char *sig, ...)
{
va_list args;
parrot_context_t *ctx;
va_start(args, sig);
ctx = runops_args(interpreter, sub, obj, meth, sig, args);
va_end(args);
return set_retval_i(interpreter, *sig, PMC_sub(sub)->seg, ctx);
}
FLOATVAL
Parrot_run_meth_fromc_args_retf(Parrot_Interp interpreter,
PMC *sub, PMC *obj, STRING *meth, const char *sig, ...)
{
va_list args;
parrot_context_t *ctx;
va_start(args, sig);
ctx = runops_args(interpreter, sub, obj, meth, sig, args);
va_end(args);
return set_retval_f(interpreter, *sig, PMC_sub(sub)->seg, ctx);
}
void *
Parrot_runops_fromc_arglist(Parrot_Interp interpreter, PMC *sub,
const char *sig, va_list args)
{
parrot_context_t *ctx;
ctx = runops_args(interpreter, sub, PMCNULL, NULL, sig, args);
return set_retval(interpreter, *sig, PMC_sub(sub)->seg, ctx);
}
INTVAL
Parrot_runops_fromc_arglist_reti(Parrot_Interp interpreter, PMC *sub,
const char *sig, va_list args)
{
parrot_context_t *ctx;
ctx = runops_args(interpreter, sub, PMCNULL, NULL, sig, args);
return set_retval_i(interpreter, *sig, PMC_sub(sub)->seg, ctx);
}
FLOATVAL
Parrot_runops_fromc_arglist_retf(Parrot_Interp interpreter, PMC *sub,
const char *sig, va_list args)
{
parrot_context_t *ctx;
ctx = runops_args(interpreter, sub, PMCNULL, NULL, sig, args);
return set_retval_f(interpreter, *sig, PMC_sub(sub)->seg, ctx);
}
void*
Parrot_run_meth_fromc_arglist(Parrot_Interp interpreter,
PMC *sub, PMC *obj, STRING *meth, const char *sig, va_list args)
{
parrot_context_t *ctx;
ctx = runops_args(interpreter, sub, obj, meth, sig, args);
return set_retval(interpreter, *sig, PMC_sub(sub)->seg, ctx);
}
INTVAL
Parrot_run_meth_fromc_arglist_reti(Parrot_Interp interpreter,
PMC *sub, PMC *obj, STRING *meth, const char *sig, va_list args)
{
parrot_context_t *ctx;
ctx = runops_args(interpreter, sub, obj, meth, sig, args);
return set_retval_i(interpreter, *sig, PMC_sub(sub)->seg, ctx);
}
FLOATVAL
Parrot_run_meth_fromc_arglist_retf(Parrot_Interp interpreter,
PMC *sub, PMC *obj, STRING *meth, const char *sig, va_list args)
{
parrot_context_t *ctx;
ctx = runops_args(interpreter, sub, obj, meth, sig, args);
return set_retval_f(interpreter, *sig, PMC_sub(sub)->seg, ctx);
}
/*
=back
=head1 SEE ALSO
F<include/parrot/interpreter.h>, F<src/interpreter.c>.
=cut
*/
/*
* Local variables:
* c-indentation-style: bsd
* c-basic-offset: 4
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/