forked from erkyrath/glulxe
-
Notifications
You must be signed in to change notification settings - Fork 0
/
glulxdump.c
974 lines (896 loc) · 26.4 KB
/
glulxdump.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
/* glulxdump.c: Glulx game file decompiler.
Designed by Andrew Plotkin <[email protected]>
http://eblong.com/zarf/glulx/index.html
*/
/* This program is very much a cheap hack. It is *not* a generic,
neutral decompiler for any Glulx file in existence. It assumes
that the Glulx file was generated by Glulx-Inform. (This, of
course, is how it is able to display objects; there *are* no
objects in the Glulx spec, but this program understands the
tables that Inform generates.)
We are making the following Inform-specific assumptions:
1. ROM contains only the header, functions, and strings, plus
some padding. (In that order.)
2. All the functions and strings are in ROM, not RAM.
3. When disassembling the contents of a function, a C0, C1,
E0, or E1 byte signals the start of a new object. (This will be
true unless we add opcodes that start with those bytes. Which
may happen someday. In fact, an opcode such as add (10) could
be represented as C0000010, which would also violate this
assumption, but Inform does not do this.)
4. The first object begins at the start of RAM.
5. Objects contain seven bytes worth of attributes. (This is
currently hardwired in Inform, but can be changed easily by
changing a #define and recompiling.)
6. Dictionary words are nine characters long, and have three
two-byte fields appended.
7. Probably other stuff I forgot.
This whole situation could be improved by adding a "layout
convention" field, at the start of ROM, which could contain
compiler-specific information about how to decompile the file.
Maybe someday.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* If your system doesn't have stdint.h, you'll have to edit the typedefs
below to make unsigned and signed 32-bit integers. */
#include <stdint.h>
typedef uint32_t glui32;
typedef int32_t glsi32;
#include "opcodes.h"
/* We define our own TRUE and FALSE and NULL, because ANSI
is a strange world. */
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
#ifndef NULL
#define NULL 0
#endif
#define Read4(ptr) \
( (glui32)(((unsigned char *)(ptr))[0] << 24) \
| (glui32)(((unsigned char *)(ptr))[1] << 16) \
| (glui32)(((unsigned char *)(ptr))[2] << 8) \
| (glui32)(((unsigned char *)(ptr))[3]))
#define Read2(ptr) \
( (glui32)(((unsigned char *)(ptr))[0] << 8) \
| (glui32)(((unsigned char *)(ptr))[1]))
#define Read1(ptr) \
((unsigned char)(((unsigned char *)(ptr))[0]))
#define Mem1(adr) (Read1(memmap+(adr)))
#define Mem2(adr) (Read2(memmap+(adr)))
#define Mem4(adr) (Read4(memmap+(adr)))
/* The following #defines are copied directly from header.h in the inform6
distribution. */
#define nop_gc 0
#define add_gc 1
#define sub_gc 2
#define mul_gc 3
#define div_gc 4
#define mod_gc 5
#define neg_gc 6
#define bitand_gc 7
#define bitor_gc 8
#define bitxor_gc 9
#define bitnot_gc 10
#define shiftl_gc 11
#define sshiftr_gc 12
#define ushiftr_gc 13
#define jump_gc 14
#define jz_gc 15
#define jnz_gc 16
#define jeq_gc 17
#define jne_gc 18
#define jlt_gc 19
#define jge_gc 20
#define jgt_gc 21
#define jle_gc 22
#define jltu_gc 23
#define jgeu_gc 24
#define jgtu_gc 25
#define jleu_gc 26
#define call_gc 27
#define return_gc 28
#define catch_gc 29
#define throw_gc 30
#define tailcall_gc 31
#define copy_gc 32
#define copys_gc 33
#define copyb_gc 34
#define sexs_gc 35
#define sexb_gc 36
#define aload_gc 37
#define aloads_gc 38
#define aloadb_gc 39
#define aloadbit_gc 40
#define astore_gc 41
#define astores_gc 42
#define astoreb_gc 43
#define astorebit_gc 44
#define stkcount_gc 45
#define stkpeek_gc 46
#define stkswap_gc 47
#define stkroll_gc 48
#define stkcopy_gc 49
#define streamchar_gc 50
#define streamnum_gc 51
#define streamstr_gc 52
#define gestalt_gc 53
#define debugtrap_gc 54
#define getmemsize_gc 55
#define setmemsize_gc 56
#define jumpabs_gc 57
#define random_gc 58
#define setrandom_gc 59
#define quit_gc 60
#define verify_gc 61
#define restart_gc 62
#define save_gc 63
#define restore_gc 64
#define saveundo_gc 65
#define restoreundo_gc 66
#define protect_gc 67
#define glk_gc 68
#define getstringtbl_gc 69
#define setstringtbl_gc 70
#define getiosys_gc 71
#define setiosys_gc 72
#define linearsearch_gc 73
#define binarysearch_gc 74
#define linkedsearch_gc 75
#define callf_gc 76
#define callfi_gc 77
#define callfii_gc 78
#define callfiii_gc 79
#define streamunichar_gc 80
#define mzero_gc 81
#define mcopy_gc 82
#define malloc_gc 83
#define mfree_gc 84
#define accelfunc_gc 85
#define accelparam_gc 86
#define numtof_gc 87
#define ftonumz_gc 88
#define ftonumn_gc 89
#define ceil_gc 90
#define floor_gc 91
#define fadd_gc 92
#define fsub_gc 93
#define fmul_gc 94
#define fdiv_gc 95
#define fmod_gc 96
#define sqrt_gc 97
#define exp_gc 98
#define log_gc 99
#define pow_gc 100
#define sin_gc 101
#define cos_gc 102
#define tan_gc 103
#define asin_gc 104
#define acos_gc 105
#define atan_gc 106
#define atan2_gc 107
#define jfeq_gc 108
#define jfne_gc 109
#define jflt_gc 110
#define jfle_gc 111
#define jfgt_gc 112
#define jfge_gc 113
#define jisnan_gc 114
#define jisinf_gc 115
typedef struct opcode_struct
{
char *name; /* Lower case standard name */
long code; /* Opcode number */
int flags; /* Flags (see below) */
int op_rules; /* Any unusual operand rule applying (see below) */
int no; /* Number of operands */
} opcode_t;
/* The following #defines, and the opcodes_table, are copied directly from
asm.c in the inform6 distribution. */
#define St 1 /* Store (last operand is store-mode) */
#define Br 2 /* Branch (last operand is a label) */
#define Rf 4 /* "Return flag": execution never continues after this
opcode (e.g., is a return or unconditional jump) */
#define St2 8 /* Store2 (second-to-last operand is store (Glulx)) */
#define GOP_Unicode 1 /* uses_unicode_features */
#define GOP_MemHeap 2 /* uses_memheap_features */
#define GOP_Acceleration 4 /* uses_acceleration_features */
#define GOP_Float 8 /* uses_float_features */
#define uchar char
static opcode_t opcodes_table[] =
{
{ (uchar *) "nop", 0x00, 0, 0, 0 },
{ (uchar *) "add", 0x10, St, 0, 3 },
{ (uchar *) "sub", 0x11, St, 0, 3 },
{ (uchar *) "mul", 0x12, St, 0, 3 },
{ (uchar *) "div", 0x13, St, 0, 3 },
{ (uchar *) "mod", 0x14, St, 0, 3 },
{ (uchar *) "neg", 0x15, St, 0, 2 },
{ (uchar *) "bitand", 0x18, St, 0, 3 },
{ (uchar *) "bitor", 0x19, St, 0, 3 },
{ (uchar *) "bitxor", 0x1A, St, 0, 3 },
{ (uchar *) "bitnot", 0x1B, St, 0, 2 },
{ (uchar *) "shiftl", 0x1C, St, 0, 3 },
{ (uchar *) "sshiftr", 0x1D, St, 0, 3 },
{ (uchar *) "ushiftr", 0x1E, St, 0, 3 },
{ (uchar *) "jump", 0x20, Br|Rf, 0, 1 },
{ (uchar *) "jz", 0x22, Br, 0, 2 },
{ (uchar *) "jnz", 0x23, Br, 0, 2 },
{ (uchar *) "jeq", 0x24, Br, 0, 3 },
{ (uchar *) "jne", 0x25, Br, 0, 3 },
{ (uchar *) "jlt", 0x26, Br, 0, 3 },
{ (uchar *) "jge", 0x27, Br, 0, 3 },
{ (uchar *) "jgt", 0x28, Br, 0, 3 },
{ (uchar *) "jle", 0x29, Br, 0, 3 },
{ (uchar *) "jltu", 0x2A, Br, 0, 3 },
{ (uchar *) "jgeu", 0x2B, Br, 0, 3 },
{ (uchar *) "jgtu", 0x2C, Br, 0, 3 },
{ (uchar *) "jleu", 0x2D, Br, 0, 3 },
{ (uchar *) "call", 0x30, St, 0, 3 },
{ (uchar *) "return", 0x31, Rf, 0, 1 },
{ (uchar *) "catch", 0x32, Br|St, 0, 2 },
{ (uchar *) "throw", 0x33, Rf, 0, 2 },
{ (uchar *) "tailcall", 0x34, Rf, 0, 2 },
{ (uchar *) "copy", 0x40, St, 0, 2 },
{ (uchar *) "copys", 0x41, St, 0, 2 },
{ (uchar *) "copyb", 0x42, St, 0, 2 },
{ (uchar *) "sexs", 0x44, St, 0, 2 },
{ (uchar *) "sexb", 0x45, St, 0, 2 },
{ (uchar *) "aload", 0x48, St, 0, 3 },
{ (uchar *) "aloads", 0x49, St, 0, 3 },
{ (uchar *) "aloadb", 0x4A, St, 0, 3 },
{ (uchar *) "aloadbit", 0x4B, St, 0, 3 },
{ (uchar *) "astore", 0x4C, 0, 0, 3 },
{ (uchar *) "astores", 0x4D, 0, 0, 3 },
{ (uchar *) "astoreb", 0x4E, 0, 0, 3 },
{ (uchar *) "astorebit", 0x4F, 0, 0, 3 },
{ (uchar *) "stkcount", 0x50, St, 0, 1 },
{ (uchar *) "stkpeek", 0x51, St, 0, 2 },
{ (uchar *) "stkswap", 0x52, 0, 0, 0 },
{ (uchar *) "stkroll", 0x53, 0, 0, 2 },
{ (uchar *) "stkcopy", 0x54, 0, 0, 1 },
{ (uchar *) "streamchar", 0x70, 0, 0, 1 },
{ (uchar *) "streamnum", 0x71, 0, 0, 1 },
{ (uchar *) "streamstr", 0x72, 0, 0, 1 },
{ (uchar *) "gestalt", 0x0100, St, 0, 3 },
{ (uchar *) "debugtrap", 0x0101, 0, 0, 1 },
{ (uchar *) "getmemsize", 0x0102, St, 0, 1 },
{ (uchar *) "setmemsize", 0x0103, St, 0, 2 },
{ (uchar *) "jumpabs", 0x0104, Rf, 0, 1 },
{ (uchar *) "random", 0x0110, St, 0, 2 },
{ (uchar *) "setrandom", 0x0111, 0, 0, 1 },
{ (uchar *) "quit", 0x0120, Rf, 0, 0 },
{ (uchar *) "verify", 0x0121, St, 0, 1 },
{ (uchar *) "restart", 0x0122, 0, 0, 0 },
{ (uchar *) "save", 0x0123, St, 0, 2 },
{ (uchar *) "restore", 0x0124, St, 0, 2 },
{ (uchar *) "saveundo", 0x0125, St, 0, 1 },
{ (uchar *) "restoreundo", 0x0126, St, 0, 1 },
{ (uchar *) "protect", 0x0127, 0, 0, 2 },
{ (uchar *) "glk", 0x0130, St, 0, 3 },
{ (uchar *) "getstringtbl", 0x0140, St, 0, 1 },
{ (uchar *) "setstringtbl", 0x0141, 0, 0, 1 },
{ (uchar *) "getiosys", 0x0148, St|St2, 0, 2 },
{ (uchar *) "setiosys", 0x0149, 0, 0, 2 },
{ (uchar *) "linearsearch", 0x0150, St, 0, 8 },
{ (uchar *) "binarysearch", 0x0151, St, 0, 8 },
{ (uchar *) "linkedsearch", 0x0152, St, 0, 7 },
{ (uchar *) "callf", 0x0160, St, 0, 2 },
{ (uchar *) "callfi", 0x0161, St, 0, 3 },
{ (uchar *) "callfii", 0x0162, St, 0, 4 },
{ (uchar *) "callfiii", 0x0163, St, 0, 5 },
{ (uchar *) "streamunichar", 0x73, 0, GOP_Unicode, 1 },
{ (uchar *) "mzero", 0x170, 0, GOP_MemHeap, 2 },
{ (uchar *) "mcopy", 0x171, 0, GOP_MemHeap, 3 },
{ (uchar *) "malloc", 0x178, St, GOP_MemHeap, 2 },
{ (uchar *) "mfree", 0x179, 0, GOP_MemHeap, 1 },
{ (uchar *) "accelfunc", 0x180, 0, GOP_Acceleration, 2 },
{ (uchar *) "accelparam", 0x181, 0, GOP_Acceleration, 2 },
{ (uchar *) "numtof", 0x190, St, GOP_Float, 2 },
{ (uchar *) "ftonumz", 0x191, St, GOP_Float, 2 },
{ (uchar *) "ftonumn", 0x192, St, GOP_Float, 2 },
{ (uchar *) "ceil", 0x198, St, GOP_Float, 2 },
{ (uchar *) "floor", 0x199, St, GOP_Float, 2 },
{ (uchar *) "fadd", 0x1A0, St, GOP_Float, 3 },
{ (uchar *) "fsub", 0x1A1, St, GOP_Float, 3 },
{ (uchar *) "fmul", 0x1A2, St, GOP_Float, 3 },
{ (uchar *) "fdiv", 0x1A3, St, GOP_Float, 3 },
{ (uchar *) "fmod", 0x1A4, St|St2, GOP_Float, 4 },
{ (uchar *) "sqrt", 0x1A8, St, GOP_Float, 2 },
{ (uchar *) "exp", 0x1A9, St, GOP_Float, 2 },
{ (uchar *) "log", 0x1AA, St, GOP_Float, 2 },
{ (uchar *) "pow", 0x1AB, St, GOP_Float, 3 },
{ (uchar *) "sin", 0x1B0, St, GOP_Float, 2 },
{ (uchar *) "cos", 0x1B1, St, GOP_Float, 2 },
{ (uchar *) "tan", 0x1B2, St, GOP_Float, 2 },
{ (uchar *) "asin", 0x1B3, St, GOP_Float, 2 },
{ (uchar *) "acos", 0x1B4, St, GOP_Float, 2 },
{ (uchar *) "atan", 0x1B5, St, GOP_Float, 2 },
{ (uchar *) "atan2", 0x1B6, St, GOP_Float, 3 },
{ (uchar *) "jfeq", 0x1C0, Br, GOP_Float, 4 },
{ (uchar *) "jfne", 0x1C1, Br, GOP_Float, 4 },
{ (uchar *) "jflt", 0x1C2, Br, GOP_Float, 3 },
{ (uchar *) "jfle", 0x1C3, Br, GOP_Float, 3 },
{ (uchar *) "jfgt", 0x1C4, Br, GOP_Float, 3 },
{ (uchar *) "jfge", 0x1C5, Br, GOP_Float, 3 },
{ (uchar *) "jisnan", 0x1C8, Br, GOP_Float, 2 },
{ (uchar *) "jisinf", 0x1C9, Br, GOP_Float, 2 },
};
static int read_header(FILE *fl);
static int findopcode(int opnum);
void print_string(glui32 pos);
void print_proptable(glui32 pos);
void dump_ram(void);
void dump_objs(void);
void dump_action_table(void);
void dump_dict_table(void);
void dump_grammar_table(void);
int dumpfuncs = FALSE;
int dumpstrings = FALSE;
int dumpobjs = FALSE;
int dumpheader = FALSE;
int dumpactiontbl = FALSE;
int dumpdicttbl = FALSE;
int dumpgrammartbl = FALSE;
glui32 posactiontbl = 0;
glui32 posdicttbl = 0;
glui32 posgrammartbl = 0;
unsigned char *memmap = NULL;
glui32 version;
glui32 ramstart;
glui32 endgamefile;
glui32 endmem;
glui32 stacksize;
glui32 startfuncaddr;
glui32 stringtable;
glui32 checksum;
int main(int argc, char *argv[])
{
FILE *fl;
int ix;
glui32 val;
char *filename = NULL;
if (argc < 2) {
printf("Usage: glulxdump file\n");
exit(1);
}
for (ix=1; ix<argc; ix++) {
if (!strcmp(argv[ix], "-f"))
dumpfuncs = TRUE;
else if (!strcmp(argv[ix], "-s"))
dumpstrings = TRUE;
else if (!strcmp(argv[ix], "-o"))
dumpobjs = TRUE;
else if (!strcmp(argv[ix], "-h"))
dumpheader = TRUE;
else if (!strcmp(argv[ix], "-a")) {
ix++;
if (ix >= argc || (val = strtol(argv[ix], NULL, 16)) == 0) {
printf("-a must be followed by address.\n");
exit(1);
}
posactiontbl = val;
dumpactiontbl = TRUE;
}
else if (!strcmp(argv[ix], "-d")) {
ix++;
if (ix >= argc || (val = strtol(argv[ix], NULL, 16)) == 0) {
printf("-d must be followed by address.\n");
exit(1);
}
posdicttbl = val;
dumpdicttbl = TRUE;
}
else if (!strcmp(argv[ix], "-g")) {
ix++;
if (ix >= argc || (val = strtol(argv[ix], NULL, 16)) == 0) {
printf("-g must be followed by address.\n");
exit(1);
}
posgrammartbl = val;
dumpgrammartbl = TRUE;
}
else
filename = argv[ix];
}
if (!filename) {
printf("No file given\n");
exit(1);
}
if (!dumpfuncs && !dumpstrings && !dumpobjs && !dumpheader
&& !dumpactiontbl && !dumpdicttbl && !dumpgrammartbl) {
dumpfuncs = TRUE;
dumpstrings = TRUE;
dumpobjs = TRUE;
dumpheader = TRUE;
}
fl = fopen(filename, "r");
if (!fl) {
perror("unable to open file");
exit(1);
}
ix = read_header(fl);
if (!ix) {
fclose(fl);
exit(1);
}
memmap = (unsigned char *)malloc(endgamefile);
rewind(fl);
ix = fread(memmap, 1, endgamefile, fl);
if (ix != endgamefile) {
printf("File too short.\n");
fclose(fl);
exit(1);
}
fclose(fl);
fl = NULL;
if (dumpheader) {
printf("Version: %08lx\n", (long)version);
printf("RAMSTART: %08lx\n", (long)ramstart);
printf("ENDGAME: %08lx\n", (long)endgamefile);
printf("ENDMEM: %08lx\n", (long)endmem);
printf("STACKSIZE: %08lx\n", (long)stacksize);
printf("StartFunc: %08lx\n", (long)startfuncaddr);
printf("StringTbl: %08lx\n", (long)stringtable);
printf("CheckSum: %08lx\n", (long)checksum);
}
if (dumpstrings || dumpfuncs)
dump_ram();
if (dumpobjs)
dump_objs();
if (dumpactiontbl)
dump_action_table();
if (dumpdicttbl)
dump_dict_table();
if (dumpgrammartbl)
dump_grammar_table();
exit(0);
}
static int read_header(FILE *fl)
{
unsigned char buf[4 * 9];
int res;
/* Read in all the size constants from the game file header. */
res = fread(buf, 1, 4 * 9, fl);
if (res != 4 * 9) {
printf("This file is too short.\n");
return FALSE;
}
if (buf[0] != 'G' || buf[1] != 'l' || buf[2] != 'u' || buf[3] != 'l') {
printf("This does not appear to be a Glulx file.\n");
return FALSE;
}
version = Read4(buf+4);
ramstart = Read4(buf+8);
endgamefile = Read4(buf+12);
endmem = Read4(buf+16);
stacksize = Read4(buf+20);
startfuncaddr = Read4(buf+24);
stringtable = Read4(buf+28);
checksum = Read4(buf+32);
return TRUE;
}
void dump_ram()
{
glui32 pos, startpos;
unsigned char ch;
int jx;
pos = 4 * (9+5);
while (pos < ramstart) {
startpos = pos;
ch = Mem1(pos);
if (ch == 0) {
/* skip padding */
pos++;
}
else if (ch == 0xE0) {
if (dumpstrings) {
printf("String (%08lx): ", (long)startpos);
pos++;
while (1) {
ch = Mem1(pos);
pos++;
if (ch == '\0')
break;
putchar(ch);
}
printf("\n");
}
else {
while (1) {
ch = Mem1(pos);
pos++;
if (ch == '\0')
break;
}
}
}
else if (ch == 0xC0 || ch == 0xC1) {
int loctype, locnum;
int opcode;
opcode_t *opco;
glui32 exstart;
int opmodes[16];
printf("Function (%08lx), ", (long)startpos);
if (ch == 0xC0)
printf("stack-called:");
else
printf("locals-called:");
pos++;
while (1) {
loctype = Mem1(pos);
pos++;
locnum = Mem1(pos);
pos++;
if (loctype == 0)
break;
printf(" %d %d-byte local%s,", locnum, loctype,
((locnum == 1) ? "" : "s"));
}
printf("\n");
ch = Mem1(pos);
pos++;
exstart = pos;
while (ch != 0xC0 && ch != 0xC1 && ch != 0xE0) {
/* wrong, but the hell with it */
/* Get the opcode */
if ((ch & 0x80) == 0) {
opcode = ch;
}
else if ((ch & 0x40) == 0) {
opcode = (ch & 0x7F);
ch = Mem1(pos); pos++;
opcode = (opcode << 8) | ch;
}
else {
opcode = (ch & 0x3F);
ch = Mem1(pos); pos++;
opcode = (opcode << 8) | ch;
ch = Mem1(pos); pos++;
opcode = (opcode << 8) | ch;
ch = Mem1(pos); pos++;
opcode = (opcode << 8) | ch;
}
opco = &opcodes_table[findopcode(opcode)];
printf(" %08lx: %12s ", (long)(pos-exstart), opco->name);
for (jx=0; jx<opco->no; jx+=2) {
ch = Mem1(pos); pos++;
opmodes[jx+0] = (ch & 0x0F);
opmodes[jx+1] = ((ch >> 4) & 0x0F);
}
for (jx=0; jx<opco->no; jx++) {
int val = 0;
printf(" ");
switch (opmodes[jx]) {
case 0:
printf("zero");
break;
case 8:
printf("stackptr");
break;
case 1:
case 5:
case 9:
case 13:
if ((opmodes[jx] & 0x0C) == 4)
printf("*");
else if ((opmodes[jx] & 0x0C) == 8)
printf("Fr:");
else if ((opmodes[jx] & 0x0C) == 12)
printf("*R:");
ch = Mem1(pos); pos++;
val = ch;
if (val & 0x80)
val |= 0xFFFFFF00;
printf("%02x", val & 0xFF);
break;
case 2:
case 6:
case 10:
case 14:
if ((opmodes[jx] & 0x0C) == 4)
printf("*");
else if ((opmodes[jx] & 0x0C) == 8)
printf("Fr:");
else if ((opmodes[jx] & 0x0C) == 12)
printf("*R:");
ch = Mem1(pos); pos++;
val = ch;
if (val & 0x80)
val |= 0xFFFFFF00;
ch = Mem1(pos); pos++;
val = (val << 8) | ch;
printf("%04x", val & 0xFFFF);
break;
case 3:
case 7:
case 11:
case 15:
if ((opmodes[jx] & 0x0C) == 4)
printf("*");
else if ((opmodes[jx] & 0x0C) == 8)
printf("Fr:");
else if ((opmodes[jx] & 0x0C) == 12)
printf("*R:");
ch = Mem1(pos); pos++;
val = ch;
ch = Mem1(pos); pos++;
val = (val << 8) | ch;
ch = Mem1(pos); pos++;
val = (val << 8) | ch;
ch = Mem1(pos); pos++;
val = (val << 8) | ch;
printf("%08x", val);
break;
}
if ((opco->flags & Br) && (jx == opco->no-1)) {
if (val == 0) {
printf(" (rfalse)");
}
else if (val == 1) {
printf(" (rtrue)");
}
else {
printf(" (%08lx)", (long)((pos-exstart)+val-2+1));
}
}
}
printf("\n");
ch = Mem1(pos); pos++;
}
pos--;
}
else {
printf("Unknown thing.\n");
pos++;
}
}
}
static int findopcode(int opnum)
{
switch (opnum) {
case op_nop: return nop_gc;
case op_add: return add_gc;
case op_sub: return sub_gc;
case op_mul: return mul_gc;
case op_div: return div_gc;
case op_mod: return mod_gc;
case op_neg: return neg_gc;
case op_bitand: return bitand_gc;
case op_bitor: return bitor_gc;
case op_bitxor: return bitxor_gc;
case op_bitnot: return bitnot_gc;
case op_shiftl: return shiftl_gc;
case op_sshiftr: return sshiftr_gc;
case op_ushiftr: return ushiftr_gc;
case op_jump: return jump_gc;
case op_jz: return jz_gc;
case op_jnz: return jnz_gc;
case op_jeq: return jeq_gc;
case op_jne: return jne_gc;
case op_jlt: return jlt_gc;
case op_jge: return jge_gc;
case op_jgt: return jgt_gc;
case op_jle: return jle_gc;
case op_call: return call_gc;
case op_return: return return_gc;
case op_catch: return catch_gc;
case op_throw: return throw_gc;
case op_copy: return copy_gc;
case op_copys: return copys_gc;
case op_copyb: return copyb_gc;
case op_sexs: return sexs_gc;
case op_sexb: return sexb_gc;
case op_aload: return aload_gc;
case op_aloads: return aloads_gc;
case op_aloadb: return aloadb_gc;
case op_aloadbit: return aloadbit_gc;
case op_astore: return astore_gc;
case op_astores: return astores_gc;
case op_astoreb: return astoreb_gc;
case op_astorebit: return astorebit_gc;
case op_stkcount: return stkcount_gc;
case op_stkpeek: return stkpeek_gc;
case op_stkswap: return stkswap_gc;
case op_stkroll: return stkroll_gc;
case op_stkcopy: return stkcopy_gc;
case op_streamchar: return streamchar_gc;
case op_streamunichar: return streamunichar_gc;
case op_streamnum: return streamnum_gc;
case op_streamstr: return streamstr_gc;
case op_gestalt: return gestalt_gc;
case op_random: return random_gc;
case op_setrandom: return setrandom_gc;
case op_quit: return quit_gc;
case op_verify: return verify_gc;
case op_restart: return restart_gc;
case op_save: return save_gc;
case op_restore: return restore_gc;
case op_saveundo: return saveundo_gc;
case op_restoreundo: return restoreundo_gc;
case op_protect: return protect_gc;
case op_glk: return glk_gc;
default:
printf("Unknown opcode %02x\n", opnum);
return nop_gc;
}
}
void dump_objs()
{
glui32 startpos, pos, nextstartpos, proptablepos;
unsigned char ch;
int ix, jx;
startpos = ramstart;
while (startpos) {
ch = Mem1(startpos);
if (ch != 0x70) {
printf("Non-object in object list (%08lx)\n", (long)startpos);
return;
}
pos = startpos+1;
printf("Object (%08lx):\n", (long)startpos);
printf(" attrs:");
for (ix=0; ix<7; ix++) {
ch = Mem1(pos); pos++;
printf(" ");
for (jx=0; jx<8; jx++) {
printf("%c", (ch&1) ? '1' : '0');
ch >>= 1;
}
}
printf("\n");
for (ix=0; ix<6; ix++) {
static char *labellist[6] = {
"next", "name", "props", "parent", "sibling", "child"
};
long val;
ch = Mem1(pos); pos++;
val = ch;
ch = Mem1(pos); pos++;
val = (val << 8) | ch;
ch = Mem1(pos); pos++;
val = (val << 8) | ch;
ch = Mem1(pos); pos++;
val = (val << 8) | ch;
printf(" %7s: ", labellist[ix]);
printf("%08lx", val);
switch (ix) {
case 0:
nextstartpos = val;
break;
case 1:
printf(" ");
print_string(val);
break;
case 2:
proptablepos = val;
break;
}
printf("\n");
}
print_proptable(proptablepos);
startpos = nextstartpos;
printf("\n");
}
}
void print_string(glui32 pos)
{
unsigned char ch;
ch = Mem1(pos);
if (ch != 0xE0) {
printf("<nonstring %08lx>", (long)pos);
return;
}
pos++;
while (1) {
ch = Mem1(pos);
pos++;
if (ch == '\0')
return;
putchar(ch);
}
}
void print_proptable(glui32 pos)
{
int ix, jx;
int numprops;
numprops = Mem4(pos);
pos += 4;
printf("%d properties:\n", numprops);
for (ix=0; ix<numprops; ix++) {
int propnum, proplen, propflags;
glui32 addr;
propnum = Mem2(pos);
pos += 2;
proplen = Mem2(pos);
pos += 2;
addr = Mem4(pos);
pos += 4;
propflags = Mem2(pos);
pos += 2;
printf(" num=%d, len=%d, flags=%d, addr=%08lx\n",
propnum, proplen, propflags, (long)addr);
printf(" :");
for (jx=0; jx<proplen; jx++) {
glsi32 val = Mem4(addr);
addr += 4;
printf(" %lx", (long)val);
}
printf("\n");
}
}
void dump_action_table()
{
glui32 lx, len, val;
len = Mem4(posactiontbl);
printf("Action table at %08lx: %ld entries\n", (long)posactiontbl, (long)len);
for (lx=0; lx<len; lx++) {
val = Mem4(posactiontbl + 4 + lx*4);
printf("%ld: %08lx\n", (long)lx, (long)val);
}
}
void dump_dict_table()
{
glui32 lx, len, val, addr;
char ch;
int ix;
len = Mem4(posdicttbl);
printf("Dictionary table at %08lx: %ld entries\n", (long)posdicttbl, (long)len);
for (lx=0; lx<len; lx++) {
addr = posdicttbl + 4 + lx*16;
printf("%08lx: ", (long)addr);
for (ix=0; ix<9; ix++) {
ch = Mem1(addr+1+ix);
if (ch == '\0')
ch = ' ';
printf("%c", ch);
}
printf(" : ");
val = Mem2(addr+10);
printf("flags=%04lx", (long)val);
val = Mem2(addr+12);
printf(", verbnum=%04lx", (long)val);
val = Mem2(addr+14);
printf(", filler=%lx", (long)val);
printf("\n");
}
}
void dump_grammar_table()
{
glui32 lx, len, val, addr;
int numlines;
int jx;
len = Mem4(posgrammartbl);
printf("Grammar table at %08lx: %ld entries\n", (long)posgrammartbl, (long)len);
for (lx=0; lx<len; lx++) {
addr = posgrammartbl + 4 + lx*4;
addr = Mem4(addr);
printf("%03ld: %08lx: ", (long)lx, (long)addr);
numlines = Mem1(addr);
addr++;
printf("%d lines:\n", numlines);
for (jx=0; jx<numlines; jx++) {
glui32 action, toktype, tokdata;
action = Mem2(addr);
addr += 2;
val = Mem1(addr);
addr++;
printf(" ac %04lx; fl %02lx :", (long)action, (long)val);
while (1) {
toktype = Mem1(addr);
addr++;
if (toktype == 15) {
printf(" .\n");
break;
}
tokdata = Mem4(addr);
addr += 4;
printf(" %02lx(%04lx)", (long)toktype, (long)tokdata);
}
}
}
}