This repository has been archived by the owner on Feb 28, 2021. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 0
/
compile.c
9573 lines (8542 loc) · 252 KB
/
compile.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
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/**********************************************************************
compile.c - ruby node tree -> VM instruction sequence
$Author$
created at: 04/01/01 03:42:15 JST
Copyright (C) 2004-2007 Koichi Sasada
**********************************************************************/
#include "ruby/encoding.h"
#include "ruby/re.h"
#include "internal.h"
#include "encindex.h"
#include <math.h>
#include "vm_core.h"
#include "vm_debug.h"
#include "iseq.h"
#include "insns.inc"
#include "insns_info.inc"
#include "id_table.h"
#include "gc.h"
#ifdef HAVE_DLADDR
# include <dlfcn.h>
#endif
#undef RUBY_UNTYPED_DATA_WARNING
#define RUBY_UNTYPED_DATA_WARNING 0
#define FIXNUM_INC(n, i) ((n)+(INT2FIX(i)&~FIXNUM_FLAG))
#define FIXNUM_OR(n, i) ((n)|INT2FIX(i))
typedef struct iseq_link_element {
enum {
ISEQ_ELEMENT_ANCHOR,
ISEQ_ELEMENT_LABEL,
ISEQ_ELEMENT_INSN,
ISEQ_ELEMENT_ADJUST,
ISEQ_ELEMENT_TRACE
} type;
struct iseq_link_element *next;
struct iseq_link_element *prev;
} LINK_ELEMENT;
typedef struct iseq_link_anchor {
LINK_ELEMENT anchor;
LINK_ELEMENT *last;
} LINK_ANCHOR;
typedef enum {
LABEL_RESCUE_NONE,
LABEL_RESCUE_BEG,
LABEL_RESCUE_END,
LABEL_RESCUE_TYPE_MAX
} LABEL_RESCUE_TYPE;
typedef struct iseq_label_data {
LINK_ELEMENT link;
int label_no;
int position;
int sc_state;
int sp;
int refcnt;
unsigned int set: 1;
unsigned int rescued: 2;
unsigned int unremovable: 1;
} LABEL;
typedef struct iseq_insn_data {
LINK_ELEMENT link;
enum ruby_vminsn_type insn_id;
int operand_size;
int sc_state;
VALUE *operands;
struct {
int line_no;
rb_event_flag_t events;
} insn_info;
} INSN;
typedef struct iseq_adjust_data {
LINK_ELEMENT link;
LABEL *label;
int line_no;
} ADJUST;
typedef struct iseq_trace_data {
LINK_ELEMENT link;
rb_event_flag_t event;
} TRACE;
struct ensure_range {
LABEL *begin;
LABEL *end;
struct ensure_range *next;
};
struct iseq_compile_data_ensure_node_stack {
const NODE *ensure_node;
struct iseq_compile_data_ensure_node_stack *prev;
struct ensure_range *erange;
};
/**
* debug function(macro) interface depend on CPDEBUG
* if it is less than 0, runtime option is in effect.
*
* debug level:
* 0: no debug output
* 1: show node type
* 2: show node important parameters
* ...
* 5: show other parameters
* 10: show every AST array
*/
#ifndef CPDEBUG
#define CPDEBUG 0
#endif
#if CPDEBUG >= 0
#define compile_debug CPDEBUG
#else
#define compile_debug ISEQ_COMPILE_DATA(iseq)->option->debug_level
#endif
#if CPDEBUG
#define compile_debug_print_indent(level) \
ruby_debug_print_indent((level), compile_debug, gl_node_level * 2)
#define debugp(header, value) (void) \
(compile_debug_print_indent(1) && \
ruby_debug_print_value(1, compile_debug, (header), (value)))
#define debugi(header, id) (void) \
(compile_debug_print_indent(1) && \
ruby_debug_print_id(1, compile_debug, (header), (id)))
#define debugp_param(header, value) (void) \
(compile_debug_print_indent(1) && \
ruby_debug_print_value(1, compile_debug, (header), (value)))
#define debugp_verbose(header, value) (void) \
(compile_debug_print_indent(2) && \
ruby_debug_print_value(2, compile_debug, (header), (value)))
#define debugp_verbose_node(header, value) (void) \
(compile_debug_print_indent(10) && \
ruby_debug_print_value(10, compile_debug, (header), (value)))
#define debug_node_start(node) ((void) \
(compile_debug_print_indent(1) && \
(ruby_debug_print_node(1, CPDEBUG, "", (const NODE *)(node)), gl_node_level)), \
gl_node_level++)
#define debug_node_end() gl_node_level --
#else
#define debugi(header, id) ((void)0)
#define debugp(header, value) ((void)0)
#define debugp_verbose(header, value) ((void)0)
#define debugp_verbose_node(header, value) ((void)0)
#define debugp_param(header, value) ((void)0)
#define debug_node_start(node) ((void)0)
#define debug_node_end() ((void)0)
#endif
#if CPDEBUG > 1 || CPDEBUG < 0
#define printf ruby_debug_printf
#define debugs if (compile_debug_print_indent(1)) ruby_debug_printf
#define debug_compile(msg, v) ((void)(compile_debug_print_indent(1) && fputs((msg), stderr)), (v))
#else
#define debugs if(0)printf
#define debug_compile(msg, v) (v)
#endif
#define LVAR_ERRINFO (1)
/* create new label */
#define NEW_LABEL(l) new_label_body(iseq, (l))
#define LABEL_FORMAT "<L%03d>"
#define NEW_ISEQ(node, name, type, line_no) \
new_child_iseq(iseq, (node), rb_fstring(name), 0, (type), (line_no))
#define NEW_CHILD_ISEQ(node, name, type, line_no) \
new_child_iseq(iseq, (node), rb_fstring(name), iseq, (type), (line_no))
/* add instructions */
#define ADD_SEQ(seq1, seq2) \
APPEND_LIST((seq1), (seq2))
/* add an instruction */
#define ADD_INSN(seq, line, insn) \
ADD_ELEM((seq), (LINK_ELEMENT *) new_insn_body(iseq, (line), BIN(insn), 0))
/* insert an instruction before prev */
#define INSERT_BEFORE_INSN(prev, line, insn) \
ELEM_INSERT_PREV(&(prev)->link, (LINK_ELEMENT *) new_insn_body(iseq, (line), BIN(insn), 0))
/* add an instruction with some operands (1, 2, 3, 5) */
#define ADD_INSN1(seq, line, insn, op1) \
ADD_ELEM((seq), (LINK_ELEMENT *) \
new_insn_body(iseq, (line), BIN(insn), 1, (VALUE)(op1)))
/* insert an instruction with some operands (1, 2, 3, 5) before prev */
#define INSERT_BEFORE_INSN1(prev, line, insn, op1) \
ELEM_INSERT_PREV(&(prev)->link, (LINK_ELEMENT *) \
new_insn_body(iseq, (line), BIN(insn), 1, (VALUE)(op1)))
#define LABEL_REF(label) ((label)->refcnt++)
/* add an instruction with label operand (alias of ADD_INSN1) */
#define ADD_INSNL(seq, line, insn, label) (ADD_INSN1(seq, line, insn, label), LABEL_REF(label))
#define ADD_INSN2(seq, line, insn, op1, op2) \
ADD_ELEM((seq), (LINK_ELEMENT *) \
new_insn_body(iseq, (line), BIN(insn), 2, (VALUE)(op1), (VALUE)(op2)))
#define ADD_INSN3(seq, line, insn, op1, op2, op3) \
ADD_ELEM((seq), (LINK_ELEMENT *) \
new_insn_body(iseq, (line), BIN(insn), 3, (VALUE)(op1), (VALUE)(op2), (VALUE)(op3)))
/* Specific Insn factory */
#define ADD_SEND(seq, line, id, argc) \
ADD_SEND_R((seq), (line), (id), (argc), NULL, (VALUE)INT2FIX(0), NULL)
#define ADD_SEND_WITH_FLAG(seq, line, id, argc, flag) \
ADD_SEND_R((seq), (line), (id), (argc), NULL, (VALUE)(flag), NULL)
#define ADD_SEND_WITH_BLOCK(seq, line, id, argc, block) \
ADD_SEND_R((seq), (line), (id), (argc), (block), (VALUE)INT2FIX(0), NULL)
#define ADD_CALL_RECEIVER(seq, line) \
ADD_INSN((seq), (line), putself)
#define ADD_CALL(seq, line, id, argc) \
ADD_SEND_R((seq), (line), (id), (argc), NULL, (VALUE)INT2FIX(VM_CALL_FCALL), NULL)
#define ADD_CALL_WITH_BLOCK(seq, line, id, argc, block) \
ADD_SEND_R((seq), (line), (id), (argc), (block), (VALUE)INT2FIX(VM_CALL_FCALL), NULL)
#define ADD_SEND_R(seq, line, id, argc, block, flag, keywords) \
ADD_ELEM((seq), (LINK_ELEMENT *) new_insn_send(iseq, (line), (id), (VALUE)(argc), (block), (VALUE)(flag), (keywords)))
#define ADD_TRACE(seq, event) \
ADD_ELEM((seq), (LINK_ELEMENT *)new_trace_body(iseq, (event)))
#define ADD_TRACE_LINE_COVERAGE(seq, line) \
do { \
if (ISEQ_COVERAGE(iseq) && \
ISEQ_LINE_COVERAGE(iseq) && \
(line) > 0) { \
RARRAY_ASET(ISEQ_LINE_COVERAGE(iseq), (line) - 1, INT2FIX(0)); \
ADD_INSN2((seq), (line), tracecoverage, INT2FIX(RUBY_EVENT_COVERAGE_LINE), INT2FIX(line)); \
} \
} while (0)
#define DECL_BRANCH_BASE(branches, first_line, first_column, last_line, last_column, type) \
do { \
if (ISEQ_COVERAGE(iseq) && \
ISEQ_BRANCH_COVERAGE(iseq) && \
(first_line) > 0) { \
VALUE structure = RARRAY_AREF(ISEQ_BRANCH_COVERAGE(iseq), 0); \
branches = rb_ary_tmp_new(0); \
rb_ary_push(structure, branches); \
rb_ary_push(branches, ID2SYM(rb_intern(type))); \
rb_ary_push(branches, INT2FIX(first_line)); \
rb_ary_push(branches, INT2FIX(first_column)); \
rb_ary_push(branches, INT2FIX(last_line)); \
rb_ary_push(branches, INT2FIX(last_column)); \
} \
} while (0)
#define ADD_TRACE_BRANCH_COVERAGE(seq, first_line, first_column, last_line, last_column, type, branches) \
do { \
if (ISEQ_COVERAGE(iseq) && \
ISEQ_BRANCH_COVERAGE(iseq) && \
(first_line) > 0) { \
VALUE counters = RARRAY_AREF(ISEQ_BRANCH_COVERAGE(iseq), 1); \
long counter_idx = RARRAY_LEN(counters); \
rb_ary_push(counters, INT2FIX(0)); \
rb_ary_push(branches, ID2SYM(rb_intern(type))); \
rb_ary_push(branches, INT2FIX(first_line)); \
rb_ary_push(branches, INT2FIX(first_column)); \
rb_ary_push(branches, INT2FIX(last_line)); \
rb_ary_push(branches, INT2FIX(last_column)); \
rb_ary_push(branches, INT2FIX(counter_idx)); \
ADD_INSN2((seq), (first_line), tracecoverage, INT2FIX(RUBY_EVENT_COVERAGE_BRANCH), INT2FIX(counter_idx)); \
} \
} while (0)
static void iseq_add_getlocal(rb_iseq_t *iseq, LINK_ANCHOR *const seq, int line, int idx, int level);
static void iseq_add_setlocal(rb_iseq_t *iseq, LINK_ANCHOR *const seq, int line, int idx, int level);
#define ADD_GETLOCAL(seq, line, idx, level) iseq_add_getlocal(iseq, (seq), (line), (idx), (level))
#define ADD_SETLOCAL(seq, line, idx, level) iseq_add_setlocal(iseq, (seq), (line), (idx), (level))
/* add label */
#define ADD_LABEL(seq, label) \
ADD_ELEM((seq), (LINK_ELEMENT *) (label))
#define APPEND_LABEL(seq, before, label) \
APPEND_ELEM((seq), (before), (LINK_ELEMENT *) (label))
#define ADD_ADJUST(seq, line, label) \
ADD_ELEM((seq), (LINK_ELEMENT *) new_adjust_body(iseq, (label), (line)))
#define ADD_ADJUST_RESTORE(seq, label) \
ADD_ELEM((seq), (LINK_ELEMENT *) new_adjust_body(iseq, (label), -1))
#define LABEL_UNREMOVABLE(label) \
((label) ? (LABEL_REF(label), (label)->unremovable=1) : 0)
#define ADD_CATCH_ENTRY(type, ls, le, iseqv, lc) do { \
VALUE _e = rb_ary_new3(5, (type), \
(VALUE)(ls) | 1, (VALUE)(le) | 1, \
(VALUE)(iseqv), (VALUE)(lc) | 1); \
LABEL_UNREMOVABLE(ls); \
LABEL_REF(le); \
LABEL_REF(lc); \
rb_ary_push(ISEQ_COMPILE_DATA(iseq)->catch_table_ary, freeze_hide_obj(_e)); \
} while (0)
/* compile node */
#define COMPILE(anchor, desc, node) \
(debug_compile("== " desc "\n", \
iseq_compile_each(iseq, (anchor), (node), 0)))
/* compile node, this node's value will be popped */
#define COMPILE_POPPED(anchor, desc, node) \
(debug_compile("== " desc "\n", \
iseq_compile_each(iseq, (anchor), (node), 1)))
/* compile node, which is popped when 'popped' is true */
#define COMPILE_(anchor, desc, node, popped) \
(debug_compile("== " desc "\n", \
iseq_compile_each(iseq, (anchor), (node), (popped))))
#define COMPILE_RECV(anchor, desc, node) \
(private_recv_p(node) ? \
(ADD_INSN(anchor, nd_line(node), putself), VM_CALL_FCALL) : \
(COMPILE(anchor, desc, node->nd_recv), 0))
#define OPERAND_AT(insn, idx) \
(((INSN*)(insn))->operands[(idx)])
#define INSN_OF(insn) \
(((INSN*)(insn))->insn_id)
#define IS_INSN(link) ((link)->type == ISEQ_ELEMENT_INSN)
#define IS_LABEL(link) ((link)->type == ISEQ_ELEMENT_LABEL)
#define IS_ADJUST(link) ((link)->type == ISEQ_ELEMENT_ADJUST)
#define IS_TRACE(link) ((link)->type == ISEQ_ELEMENT_TRACE)
#define IS_INSN_ID(iobj, insn) (INSN_OF(iobj) == BIN(insn))
#define IS_NEXT_INSN_ID(link, insn) \
((link)->next && IS_INSN((link)->next) && IS_INSN_ID((link)->next, insn))
/* error */
#if CPDEBUG > 0
NORETURN(static void append_compile_error(rb_iseq_t *iseq, int line, const char *fmt, ...));
#endif
static void
append_compile_error(rb_iseq_t *iseq, int line, const char *fmt, ...)
{
VALUE err_info = ISEQ_COMPILE_DATA(iseq)->err_info;
VALUE file = rb_iseq_path(iseq);
VALUE err = err_info == Qtrue ? Qfalse : err_info;
va_list args;
va_start(args, fmt);
err = rb_syntax_error_append(err, file, line, -1, NULL, fmt, args);
va_end(args);
if (NIL_P(err_info)) {
RB_OBJ_WRITE(iseq, &ISEQ_COMPILE_DATA(iseq)->err_info, err);
rb_set_errinfo(err);
}
else if (!err_info) {
RB_OBJ_WRITE(iseq, &ISEQ_COMPILE_DATA(iseq)->err_info, Qtrue);
}
if (compile_debug) rb_exc_fatal(err);
}
#if 0
static void
compile_bug(rb_iseq_t *iseq, int line, const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
rb_report_bug_valist(rb_iseq_path(iseq), line, fmt, args);
va_end(args);
abort();
}
#endif
#define COMPILE_ERROR append_compile_error
#define ERROR_ARGS_AT(n) iseq, nd_line(n),
#define ERROR_ARGS ERROR_ARGS_AT(node)
#define EXPECT_NODE(prefix, node, ndtype, errval) \
do { \
const NODE *error_node = (node); \
enum node_type error_type = nd_type(error_node); \
if (error_type != (ndtype)) { \
COMPILE_ERROR(ERROR_ARGS_AT(error_node) \
prefix ": " #ndtype " is expected, but %s", \
ruby_node_name(error_type)); \
return errval; \
} \
} while (0)
#define EXPECT_NODE_NONULL(prefix, parent, ndtype, errval) \
do { \
COMPILE_ERROR(ERROR_ARGS_AT(parent) \
prefix ": must be " #ndtype ", but 0"); \
return errval; \
} while (0)
#define UNKNOWN_NODE(prefix, node, errval) \
do { \
const NODE *error_node = (node); \
COMPILE_ERROR(ERROR_ARGS_AT(error_node) prefix ": unknown node (%s)", \
ruby_node_name(nd_type(error_node))); \
return errval; \
} while (0)
#define COMPILE_OK 1
#define COMPILE_NG 0
#define CHECK(sub) if (!(sub)) {BEFORE_RETURN;return COMPILE_NG;}
#define BEFORE_RETURN
/* leave name uninitialized so that compiler warn if INIT_ANCHOR is
* missing */
#define DECL_ANCHOR(name) \
LINK_ANCHOR name[1] = {{{ISEQ_ELEMENT_ANCHOR,},}}
#define INIT_ANCHOR(name) \
(name->last = &name->anchor)
static inline VALUE
freeze_hide_obj(VALUE obj)
{
OBJ_FREEZE(obj);
RBASIC_CLEAR_CLASS(obj);
return obj;
}
#include "optinsn.inc"
#if OPT_INSTRUCTIONS_UNIFICATION
#include "optunifs.inc"
#endif
/* for debug */
#if CPDEBUG < 0
#define ISEQ_ARG iseq,
#define ISEQ_ARG_DECLARE rb_iseq_t *iseq,
#else
#define ISEQ_ARG
#define ISEQ_ARG_DECLARE
#endif
#if CPDEBUG
#define gl_node_level ISEQ_COMPILE_DATA(iseq)->node_level
#endif
static void dump_disasm_list_with_cursor(const LINK_ELEMENT *link, const LINK_ELEMENT *curr, const LABEL *dest);
static void dump_disasm_list(const LINK_ELEMENT *elem);
static int insn_data_length(INSN *iobj);
static int calc_sp_depth(int depth, INSN *iobj);
static INSN *new_insn_body(rb_iseq_t *iseq, int line_no, enum ruby_vminsn_type insn_id, int argc, ...);
static LABEL *new_label_body(rb_iseq_t *iseq, long line);
static ADJUST *new_adjust_body(rb_iseq_t *iseq, LABEL *label, int line);
static TRACE *new_trace_body(rb_iseq_t *iseq, rb_event_flag_t event);
static int iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *anchor, const NODE *n, int);
static int iseq_setup(rb_iseq_t *iseq, LINK_ANCHOR *const anchor);
static int iseq_optimize(rb_iseq_t *iseq, LINK_ANCHOR *const anchor);
static int iseq_insns_unification(rb_iseq_t *iseq, LINK_ANCHOR *const anchor);
static int iseq_set_local_table(rb_iseq_t *iseq, const ID *tbl);
static int iseq_set_exception_local_table(rb_iseq_t *iseq);
static int iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *const anchor, const NODE *const node);
static int iseq_set_sequence_stackcaching(rb_iseq_t *iseq, LINK_ANCHOR *const anchor);
static int iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *const anchor);
static int iseq_set_exception_table(rb_iseq_t *iseq);
static int iseq_set_optargs_table(rb_iseq_t *iseq);
static int compile_defined_expr(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, VALUE needstr);
/*
* To make Array to LinkedList, use link_anchor
*/
static void
verify_list(ISEQ_ARG_DECLARE const char *info, LINK_ANCHOR *const anchor)
{
#if CPDEBUG
int flag = 0;
LINK_ELEMENT *list, *plist;
if (!compile_debug) return;
list = anchor->anchor.next;
plist = &anchor->anchor;
while (list) {
if (plist != list->prev) {
flag += 1;
}
plist = list;
list = list->next;
}
if (anchor->last != plist && anchor->last != 0) {
flag |= 0x70000;
}
if (flag != 0) {
rb_bug("list verify error: %08x (%s)", flag, info);
}
#endif
}
#if CPDEBUG < 0
#define verify_list(info, anchor) verify_list(iseq, (info), (anchor))
#endif
/*
* elem1, elem2 => elem1, elem2, elem
*/
static void
ADD_ELEM(ISEQ_ARG_DECLARE LINK_ANCHOR *const anchor, LINK_ELEMENT *elem)
{
elem->prev = anchor->last;
anchor->last->next = elem;
anchor->last = elem;
verify_list("add", anchor);
}
/*
* elem1, before, elem2 => elem1, before, elem, elem2
*/
static void
APPEND_ELEM(ISEQ_ARG_DECLARE LINK_ANCHOR *const anchor, LINK_ELEMENT *before, LINK_ELEMENT *elem)
{
elem->prev = before;
elem->next = before->next;
elem->next->prev = elem;
before->next = elem;
if (before == anchor->last) anchor->last = elem;
verify_list("add", anchor);
}
#if CPDEBUG < 0
#define ADD_ELEM(anchor, elem) ADD_ELEM(iseq, (anchor), (elem))
#define APPEND_ELEM(anchor, before, elem) APPEND_ELEM(iseq, (anchor), (before), (elem))
#endif
static int
iseq_add_mark_object(const rb_iseq_t *iseq, VALUE v)
{
if (!SPECIAL_CONST_P(v)) {
rb_iseq_add_mark_object(iseq, v);
}
return COMPILE_OK;
}
static int
iseq_add_mark_object_compile_time(const rb_iseq_t *iseq, VALUE v)
{
if (!SPECIAL_CONST_P(v)) {
rb_ary_push(ISEQ_COMPILE_DATA(iseq)->mark_ary, v);
}
return COMPILE_OK;
}
static inline VALUE
freeze_literal(rb_iseq_t *iseq, VALUE lit)
{
lit = rb_fstring(lit);
rb_ary_push(ISEQ_COMPILE_DATA(iseq)->mark_ary, lit);
return lit;
}
static int
validate_label(st_data_t name, st_data_t label, st_data_t arg)
{
rb_iseq_t *iseq = (rb_iseq_t *)arg;
LABEL *lobj = (LABEL *)label;
if (!lobj->link.next) {
do {
COMPILE_ERROR(iseq, lobj->position,
"%"PRIsVALUE": undefined label",
rb_sym2str((VALUE)name));
} while (0);
}
return ST_CONTINUE;
}
static void
validate_labels(rb_iseq_t *iseq, st_table *labels_table)
{
st_foreach(labels_table, validate_label, (st_data_t)iseq);
st_free_table(labels_table);
}
VALUE
rb_iseq_compile_ifunc(rb_iseq_t *iseq, const struct vm_ifunc *ifunc)
{
DECL_ANCHOR(ret);
INIT_ANCHOR(ret);
(*ifunc->func)(iseq, ret, ifunc->data);
ADD_INSN(ret, ISEQ_COMPILE_DATA(iseq)->last_line, leave);
return iseq_setup(iseq, ret);
}
VALUE
rb_iseq_compile_node(rb_iseq_t *iseq, const NODE *node)
{
DECL_ANCHOR(ret);
INIT_ANCHOR(ret);
VM_ASSERT(!imemo_type_p((VALUE)node, imemo_ifunc));
if (node == 0) {
COMPILE(ret, "nil", node);
iseq_set_local_table(iseq, 0);
}
/* assume node is T_NODE */
else if (nd_type(node) == NODE_SCOPE) {
/* iseq type of top, method, class, block */
iseq_set_local_table(iseq, node->nd_tbl);
iseq_set_arguments(iseq, ret, node->nd_args);
switch (iseq->body->type) {
case ISEQ_TYPE_BLOCK:
{
LABEL *start = ISEQ_COMPILE_DATA(iseq)->start_label = NEW_LABEL(0);
LABEL *end = ISEQ_COMPILE_DATA(iseq)->end_label = NEW_LABEL(0);
start->rescued = LABEL_RESCUE_BEG;
end->rescued = LABEL_RESCUE_END;
ADD_TRACE(ret, RUBY_EVENT_B_CALL);
ADD_INSN (ret, FIX2INT(iseq->body->location.first_lineno), nop);
ADD_LABEL(ret, start);
CHECK(COMPILE(ret, "block body", node->nd_body));
ADD_LABEL(ret, end);
ADD_TRACE(ret, RUBY_EVENT_B_RETURN);
ISEQ_COMPILE_DATA(iseq)->last_line = iseq->body->location.code_location.end_pos.lineno;
/* wide range catch handler must put at last */
ADD_CATCH_ENTRY(CATCH_TYPE_REDO, start, end, NULL, start);
ADD_CATCH_ENTRY(CATCH_TYPE_NEXT, start, end, NULL, end);
break;
}
case ISEQ_TYPE_CLASS:
{
ADD_TRACE(ret, RUBY_EVENT_CLASS);
CHECK(COMPILE(ret, "scoped node", node->nd_body));
ADD_TRACE(ret, RUBY_EVENT_END);
ISEQ_COMPILE_DATA(iseq)->last_line = nd_line(node);
break;
}
case ISEQ_TYPE_METHOD:
{
ADD_TRACE(ret, RUBY_EVENT_CALL);
CHECK(COMPILE(ret, "scoped node", node->nd_body));
ADD_TRACE(ret, RUBY_EVENT_RETURN);
ISEQ_COMPILE_DATA(iseq)->last_line = nd_line(node);
break;
}
default: {
CHECK(COMPILE(ret, "scoped node", node->nd_body));
break;
}
}
}
else {
const char *m;
#define INVALID_ISEQ_TYPE(type) \
ISEQ_TYPE_##type: m = #type; goto invalid_iseq_type
switch (iseq->body->type) {
case INVALID_ISEQ_TYPE(METHOD);
case INVALID_ISEQ_TYPE(CLASS);
case INVALID_ISEQ_TYPE(BLOCK);
case INVALID_ISEQ_TYPE(EVAL);
case INVALID_ISEQ_TYPE(MAIN);
case INVALID_ISEQ_TYPE(TOP);
#undef INVALID_ISEQ_TYPE /* invalid iseq types end */
case ISEQ_TYPE_RESCUE:
iseq_set_exception_local_table(iseq);
CHECK(COMPILE(ret, "rescue", node));
break;
case ISEQ_TYPE_ENSURE:
iseq_set_exception_local_table(iseq);
CHECK(COMPILE_POPPED(ret, "ensure", node));
break;
case ISEQ_TYPE_PLAIN:
CHECK(COMPILE(ret, "ensure", node));
break;
default:
COMPILE_ERROR(ERROR_ARGS "unknown scope: %d", iseq->body->type);
return COMPILE_NG;
invalid_iseq_type:
COMPILE_ERROR(ERROR_ARGS "compile/ISEQ_TYPE_%s should not be reached", m);
return COMPILE_NG;
}
}
if (iseq->body->type == ISEQ_TYPE_RESCUE || iseq->body->type == ISEQ_TYPE_ENSURE) {
ADD_GETLOCAL(ret, 0, LVAR_ERRINFO, 0);
ADD_INSN1(ret, 0, throw, INT2FIX(0) /* continue throw */ );
}
else {
ADD_INSN(ret, ISEQ_COMPILE_DATA(iseq)->last_line, leave);
}
#if SUPPORT_JOKE
if (ISEQ_COMPILE_DATA(iseq)->labels_table) {
st_table *labels_table = ISEQ_COMPILE_DATA(iseq)->labels_table;
ISEQ_COMPILE_DATA(iseq)->labels_table = 0;
validate_labels(iseq, labels_table);
}
#endif
return iseq_setup(iseq, ret);
}
int
rb_iseq_translate_threaded_code(rb_iseq_t *iseq)
{
#if OPT_DIRECT_THREADED_CODE || OPT_CALL_THREADED_CODE
const void * const *table = rb_vm_get_insns_address_table();
unsigned int i;
VALUE *encoded = (VALUE *)iseq->body->iseq_encoded;
for (i = 0; i < iseq->body->iseq_size; /* */ ) {
int insn = (int)iseq->body->iseq_encoded[i];
int len = insn_len(insn);
encoded[i] = (VALUE)table[insn];
i += len;
}
#endif
return COMPILE_OK;
}
#if OPT_DIRECT_THREADED_CODE || OPT_CALL_THREADED_CODE
static int
rb_vm_insn_addr2insn(const void *addr) /* cold path */
{
int insn;
const void * const *table = rb_vm_get_insns_address_table();
for (insn = 0; insn < VM_INSTRUCTION_SIZE; insn++) {
if (table[insn] == addr) {
return insn;
}
}
rb_bug("rb_vm_insn_addr2insn: invalid insn address: %p", addr);
}
#endif
VALUE *
rb_iseq_original_iseq(const rb_iseq_t *iseq) /* cold path */
{
VALUE *original_code;
if (ISEQ_ORIGINAL_ISEQ(iseq)) return ISEQ_ORIGINAL_ISEQ(iseq);
original_code = ISEQ_ORIGINAL_ISEQ_ALLOC(iseq, iseq->body->iseq_size);
MEMCPY(original_code, iseq->body->iseq_encoded, VALUE, iseq->body->iseq_size);
#if OPT_DIRECT_THREADED_CODE || OPT_CALL_THREADED_CODE
{
unsigned int i;
for (i = 0; i < iseq->body->iseq_size; /* */ ) {
const void *addr = (const void *)original_code[i];
const int insn = rb_vm_insn_addr2insn(addr);
original_code[i] = insn;
i += insn_len(insn);
}
}
#endif
return original_code;
}
/*********************************************/
/* definition of data structure for compiler */
/*********************************************/
/*
* On 32-bit SPARC, GCC by default generates SPARC V7 code that may require
* 8-byte word alignment. On the other hand, Oracle Solaris Studio seems to
* generate SPARCV8PLUS code with unaligned memory access instructions.
* That is why the STRICT_ALIGNMENT is defined only with GCC.
*/
#if defined(__sparc) && SIZEOF_VOIDP == 4 && defined(__GNUC__)
#define STRICT_ALIGNMENT
#endif
#ifdef STRICT_ALIGNMENT
#if defined(HAVE_TRUE_LONG_LONG) && SIZEOF_LONG_LONG > SIZEOF_VALUE
#define ALIGNMENT_SIZE SIZEOF_LONG_LONG
#else
#define ALIGNMENT_SIZE SIZEOF_VALUE
#endif
#define PADDING_SIZE_MAX ((size_t)((ALIGNMENT_SIZE) - 1))
#define ALIGNMENT_SIZE_MASK PADDING_SIZE_MAX
/* Note: ALIGNMENT_SIZE == (2 ** N) is expected. */
#else
#define PADDING_SIZE_MAX 0
#endif /* STRICT_ALIGNMENT */
#ifdef STRICT_ALIGNMENT
/* calculate padding size for aligned memory access */
static size_t
calc_padding(void *ptr, size_t size)
{
size_t mis;
size_t padding = 0;
mis = (size_t)ptr & ALIGNMENT_SIZE_MASK;
if (mis > 0) {
padding = ALIGNMENT_SIZE - mis;
}
/*
* On 32-bit sparc or equivalents, when a single VALUE is requested
* and padding == sizeof(VALUE), it is clear that no padding is needed.
*/
#if ALIGNMENT_SIZE > SIZEOF_VALUE
if (size == sizeof(VALUE) && padding == sizeof(VALUE)) {
padding = 0;
}
#endif
return padding;
}
#endif /* STRICT_ALIGNMENT */
static void *
compile_data_alloc(rb_iseq_t *iseq, size_t size)
{
void *ptr = 0;
struct iseq_compile_data_storage *storage =
ISEQ_COMPILE_DATA(iseq)->storage_current;
#ifdef STRICT_ALIGNMENT
size_t padding = calc_padding((void *)&storage->buff[storage->pos], size);
#else
const size_t padding = 0; /* expected to be optimized by compiler */
#endif /* STRICT_ALIGNMENT */
if (size >= INT_MAX - padding) rb_memerror();
if (storage->pos + size + padding > storage->size) {
unsigned int alloc_size = storage->size;
while (alloc_size < size + PADDING_SIZE_MAX) {
if (alloc_size >= INT_MAX / 2) rb_memerror();
alloc_size *= 2;
}
storage->next = (void *)ALLOC_N(char, alloc_size +
offsetof(struct iseq_compile_data_storage, buff));
storage = ISEQ_COMPILE_DATA(iseq)->storage_current = storage->next;
storage->next = 0;
storage->pos = 0;
storage->size = alloc_size;
#ifdef STRICT_ALIGNMENT
padding = calc_padding((void *)&storage->buff[storage->pos], size);
#endif /* STRICT_ALIGNMENT */
}
#ifdef STRICT_ALIGNMENT
storage->pos += (int)padding;
#endif /* STRICT_ALIGNMENT */
ptr = (void *)&storage->buff[storage->pos];
storage->pos += (int)size;
return ptr;
}
static INSN *
compile_data_alloc_insn(rb_iseq_t *iseq)
{
return (INSN *)compile_data_alloc(iseq, sizeof(INSN));
}
static LABEL *
compile_data_alloc_label(rb_iseq_t *iseq)
{
return (LABEL *)compile_data_alloc(iseq, sizeof(LABEL));
}
static ADJUST *
compile_data_alloc_adjust(rb_iseq_t *iseq)
{
return (ADJUST *)compile_data_alloc(iseq, sizeof(ADJUST));
}
static TRACE *
compile_data_alloc_trace(rb_iseq_t *iseq)
{
return (TRACE *)compile_data_alloc(iseq, sizeof(TRACE));
}
/*
* elem1, elemX => elem1, elem2, elemX
*/
static void
ELEM_INSERT_NEXT(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
{
elem2->next = elem1->next;
elem2->prev = elem1;
elem1->next = elem2;
if (elem2->next) {
elem2->next->prev = elem2;
}
}
/*
* elem1, elemX => elemX, elem2, elem1
*/
static void
ELEM_INSERT_PREV(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
{
elem2->prev = elem1->prev;
elem2->next = elem1;
elem1->prev = elem2;
if (elem2->prev) {
elem2->prev->next = elem2;
}
}
/*
* elemX, elem1, elemY => elemX, elem2, elemY
*/
static void
ELEM_REPLACE(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
{
elem2->prev = elem1->prev;
elem2->next = elem1->next;
if (elem1->prev) {
elem1->prev->next = elem2;
}
if (elem1->next) {
elem1->next->prev = elem2;
}
}
static void
ELEM_REMOVE(LINK_ELEMENT *elem)
{
elem->prev->next = elem->next;
if (elem->next) {
elem->next->prev = elem->prev;
}
}
static LINK_ELEMENT *
FIRST_ELEMENT(const LINK_ANCHOR *const anchor)
{
return anchor->anchor.next;
}
static LINK_ELEMENT *
LAST_ELEMENT(LINK_ANCHOR *const anchor)
{
return anchor->last;
}
static LINK_ELEMENT *
POP_ELEMENT(ISEQ_ARG_DECLARE LINK_ANCHOR *const anchor)
{
LINK_ELEMENT *elem = anchor->last;
anchor->last = anchor->last->prev;
anchor->last->next = 0;
verify_list("pop", anchor);
return elem;
}
#if CPDEBUG < 0
#define POP_ELEMENT(anchor) POP_ELEMENT(iseq, (anchor))
#endif
static LINK_ELEMENT *
ELEM_FIRST_INSN(LINK_ELEMENT *elem)
{
while (elem) {
switch (elem->type) {
case ISEQ_ELEMENT_INSN:
case ISEQ_ELEMENT_ADJUST:
return elem;
default: