aboutsummaryrefslogtreecommitdiff
path: root/engines/sci/engine/kernel.cpp
blob: 49266f3a184981a844bf856dc1bde8ed64f4aa8c (plain)
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
/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * $URL$
 * $Id$
 *
 */

#include "sci/sci.h"
#include "sci/engine/kernel.h"
#include "sci/event.h"
#include "sci/resource.h"
#include "sci/engine/state.h"

#include "common/system.h"

namespace Sci {

// Default kernel name table
#define SCI_KNAMES_DEFAULT_ENTRIES_NR 0x89

static const char *sci_default_knames[SCI_KNAMES_DEFAULT_ENTRIES_NR] = {
	/*0x00*/ "Load",
	/*0x01*/ "UnLoad",
	/*0x02*/ "ScriptID",
	/*0x03*/ "DisposeScript",
	/*0x04*/ "Clone",
	/*0x05*/ "DisposeClone",
	/*0x06*/ "IsObject",
	/*0x07*/ "RespondsTo",
	/*0x08*/ "DrawPic",
	/*0x09*/ "Dummy",	// Show
	/*0x0a*/ "PicNotValid",
	/*0x0b*/ "Animate",
	/*0x0c*/ "SetNowSeen",
	/*0x0d*/ "NumLoops",
	/*0x0e*/ "NumCels",
	/*0x0f*/ "CelWide",
	/*0x10*/ "CelHigh",
	/*0x11*/ "DrawCel",
	/*0x12*/ "AddToPic",
	/*0x13*/ "NewWindow",
	/*0x14*/ "GetPort",
	/*0x15*/ "SetPort",
	/*0x16*/ "DisposeWindow",
	/*0x17*/ "DrawControl",
	/*0x18*/ "HiliteControl",
	/*0x19*/ "EditControl",
	/*0x1a*/ "TextSize",
	/*0x1b*/ "Display",
	/*0x1c*/ "GetEvent",
	/*0x1d*/ "GlobalToLocal",
	/*0x1e*/ "LocalToGlobal",
	/*0x1f*/ "MapKeyToDir",
	/*0x20*/ "DrawMenuBar",
	/*0x21*/ "MenuSelect",
	/*0x22*/ "AddMenu",
	/*0x23*/ "DrawStatus",
	/*0x24*/ "Parse",
	/*0x25*/ "Said",
	/*0x26*/ "SetSynonyms",	// Portrait (KQ6 hires)
	/*0x27*/ "HaveMouse",
	/*0x28*/ "SetCursor",
	// FOpen (SCI0)
	// FPuts (SCI0)
	// FGets (SCI0)
	// FClose (SCI0)
	/*0x29*/ "SaveGame",
	/*0x2a*/ "RestoreGame",
	/*0x2b*/ "RestartGame",
	/*0x2c*/ "GameIsRestarting",
	/*0x2d*/ "DoSound",
	/*0x2e*/ "NewList",
	/*0x2f*/ "DisposeList",
	/*0x30*/ "NewNode",
	/*0x31*/ "FirstNode",
	/*0x32*/ "LastNode",
	/*0x33*/ "EmptyList",
	/*0x34*/ "NextNode",
	/*0x35*/ "PrevNode",
	/*0x36*/ "NodeValue",
	/*0x37*/ "AddAfter",
	/*0x38*/ "AddToFront",
	/*0x39*/ "AddToEnd",
	/*0x3a*/ "FindKey",
	/*0x3b*/ "DeleteKey",
	/*0x3c*/ "Random",
	/*0x3d*/ "Abs",
	/*0x3e*/ "Sqrt",
	/*0x3f*/ "GetAngle",
	/*0x40*/ "GetDistance",
	/*0x41*/ "Wait",
	/*0x42*/ "GetTime",
	/*0x43*/ "StrEnd",
	/*0x44*/ "StrCat",
	/*0x45*/ "StrCmp",
	/*0x46*/ "StrLen",
	/*0x47*/ "StrCpy",
	/*0x48*/ "Format",
	/*0x49*/ "GetFarText",
	/*0x4a*/ "ReadNumber",
	/*0x4b*/ "BaseSetter",
	/*0x4c*/ "DirLoop",
	/*0x4d*/ "CanBeHere", // CantBeHere in newer SCI versions
	/*0x4e*/ "OnControl",
	/*0x4f*/ "InitBresen",
	/*0x50*/ "DoBresen",
	/*0x51*/ "Platform", // DoAvoider (SCI0)
	/*0x52*/ "SetJump",
	/*0x53*/ "SetDebug",
	/*0x54*/ "Dummy",    // InspectObj
	/*0x55*/ "Dummy",    // ShowSends
	/*0x56*/ "Dummy",    // ShowObjs
	/*0x57*/ "Dummy",    // ShowFree
	/*0x58*/ "MemoryInfo",
	/*0x59*/ "Dummy",    // StackUsage
	/*0x5a*/ "Dummy",    // Profiler
	/*0x5b*/ "GetMenu",
	/*0x5c*/ "SetMenu",
	/*0x5d*/ "GetSaveFiles",
	/*0x5e*/ "GetCWD",
	/*0x5f*/ "CheckFreeSpace",
	/*0x60*/ "ValidPath",
	/*0x61*/ "CoordPri",
	/*0x62*/ "StrAt",
	/*0x63*/ "DeviceInfo",
	/*0x64*/ "GetSaveDir",
	/*0x65*/ "CheckSaveGame",
	/*0x66*/ "ShakeScreen",
	/*0x67*/ "FlushResources",
	/*0x68*/ "SinMult",
	/*0x69*/ "CosMult",
	/*0x6a*/ "SinDiv",
	/*0x6b*/ "CosDiv",
	/*0x6c*/ "Graph",
	/*0x6d*/ "Joystick",
	// End of kernel function table for SCI0
	/*0x6e*/ "ShiftScreen",
	/*0x6f*/ "Palette",
	/*0x70*/ "MemorySegment",
	/*0x71*/ "Intersections",	// MoveCursor (SCI1 late), PalVary (SCI1.1)
	/*0x72*/ "Memory",
	/*0x73*/ "ListOps",
	/*0x74*/ "FileIO",
	/*0x75*/ "DoAudio",
	/*0x76*/ "DoSync",
	/*0x77*/ "AvoidPath",
	/*0x78*/ "Sort",	// StrSplit (SCI01)
	/*0x79*/ "ATan",
	/*0x7a*/ "Lock",
	/*0x7b*/ "StrSplit",
	/*0x7c*/ "GetMessage",	// Message (SCI1.1)
	/*0x7d*/ "IsItSkip",
	/*0x7e*/ "MergePoly",
	/*0x7f*/ "ResCheck",
	/*0x80*/ "AssertPalette",
	/*0x81*/ "TextColors",
	/*0x82*/ "TextFonts",
	/*0x83*/ "Dummy",	// Record
	/*0x84*/ "Dummy",	// PlayBack
	/*0x85*/ "ShowMovie",
	/*0x86*/ "SetVideoMode",
	/*0x87*/ "SetQuitStr",
	/*0x88*/ "Dummy"	// DbugStr
};

struct SciKernelFunction {
	const char *name;
	KernelFunc *fun; /* The actual function */
	const char *signature;  /* kfunct signature */
};

#define DEFUN(name, fun, sig) {name, fun, sig}

SciKernelFunction kfunct_mappers[] = {
	/*00*/	DEFUN("Load", kLoad, "iii*"),
	/*01*/	DEFUN("UnLoad", kUnLoad, "i.*"),	// Work around SQ1 bug, when exiting the Ulence flats bar
	/*02*/	DEFUN("ScriptID", kScriptID, "Ioi*"),
	/*03*/	DEFUN("DisposeScript", kDisposeScript, "Oii*"), // Work around QfG1 bug
	/*04*/	DEFUN("Clone", kClone, "o"),
	/*05*/	DEFUN("DisposeClone", kDisposeClone, "o"),
	/*06*/	DEFUN("IsObject", kIsObject, "."),
	/*07*/	DEFUN("RespondsTo", kRespondsTo, ".i"),
	/*08*/	DEFUN("DrawPic", kDrawPic, "i*"),

	/*0a*/	DEFUN("PicNotValid", kPicNotValid, "i*"),
	/*0b*/	DEFUN("Animate", kAnimate, "LI*"), // More like (li?)?
	/*0c*/	DEFUN("SetNowSeen", kSetNowSeen, "oi*"), // The second parameter is ignored
	/*0d*/	DEFUN("NumLoops", kNumLoops, "o"),
	/*0e*/	DEFUN("NumCels", kNumCels, "o"),
	/*0f*/	DEFUN("CelWide", kCelWide, "iOi*"),
	/*10*/	DEFUN("CelHigh", kCelHigh, "iOi*"),
	/*11*/	DEFUN("DrawCel", kDrawCel, "iiiiii*i*r*"),
	/*12*/	DEFUN("AddToPic", kAddToPic, "Il*"),
	// FIXME: signature check removed (set to .*) as kNewWindow is different in Mac versions
	/*13*/	DEFUN("NewWindow", kNewWindow, "*."),
	///*13*/	DEFUN("NewWindow", kNewWindow, "iiiiZRi*"),
	/*14*/	DEFUN("GetPort", kGetPort, ""),
	/*15*/	DEFUN("SetPort", kSetPort, "ii*"),
	/*16*/	DEFUN("DisposeWindow", kDisposeWindow, "ii*"),
	/*17*/	DEFUN("DrawControl", kDrawControl, "o"),
	/*18*/	DEFUN("HiliteControl", kHiliteControl, "o"),
	/*19*/	DEFUN("EditControl", kEditControl, "ZoZo"),
	/*1a*/	DEFUN("TextSize", kTextSize, "rZrii*r*"),
	/*1b*/	DEFUN("Display", kDisplay, ".*"),
	/*1c*/	DEFUN("GetEvent", kGetEvent, "ioi*"),	// Mac versions pass an extra 3rd parameter (ignored - always 0?)
	/*1d*/	DEFUN("GlobalToLocal", kGlobalToLocal, "oo*"),
	/*1e*/	DEFUN("LocalToGlobal", kLocalToGlobal, "oo*"),
	/*1f*/	DEFUN("MapKeyToDir", kMapKeyToDir, "o"),
	/*20*/	DEFUN("DrawMenuBar", kDrawMenuBar, "i"),
	/*21*/	DEFUN("MenuSelect", kMenuSelect, "oi*"),
	/*22*/	DEFUN("AddMenu", kAddMenu, "rr"),
	/*23*/	DEFUN("DrawStatus", kDrawStatus, "Zri*"),
	/*24*/	DEFUN("Parse", kParse, "ro"),
	/*25*/	DEFUN("Said", kSaid, "Zr"),
	/*26*/	DEFUN("SetSynonyms", kSetSynonyms, "o"),
	/*27*/	DEFUN("HaveMouse", kHaveMouse, ""),
	/*28*/	DEFUN("SetCursor", kSetCursor, "i*"),
	// FIXME: The number 0x28 occurs twice :-)
	/*28*/	DEFUN("MoveCursor", kMoveCursor, "ii"),
	/*29*/	DEFUN("FOpen", kFOpen, "ri"),
	/*2a*/	DEFUN("FPuts", kFPuts, "ir"),
	/*2b*/	DEFUN("FGets", kFGets, "rii"),
	/*2c*/	DEFUN("FClose", kFClose, "i"),
	/*2d*/	DEFUN("SaveGame", kSaveGame, "rirr*"),
	/*2e*/	DEFUN("RestoreGame", kRestoreGame, "rir*"),
	/*2f*/	DEFUN("RestartGame", kRestartGame, ""),
	/*30*/	DEFUN("GameIsRestarting", kGameIsRestarting, "i*"),
	/*31*/	DEFUN("DoSound", kDoSound, "iIo*"),
	/*32*/	DEFUN("NewList", kNewList, ""),
	/*33*/	DEFUN("DisposeList", kDisposeList, "l"),
	/*34*/	DEFUN("NewNode", kNewNode, ".."),
	/*35*/	DEFUN("FirstNode", kFirstNode, "Zl"),
	/*36*/	DEFUN("LastNode", kLastNode, "l"),
	/*37*/	DEFUN("EmptyList", kEmptyList, "l"),
	/*38*/	DEFUN("NextNode", kNextNode, "n"),
	/*39*/	DEFUN("PrevNode", kPrevNode, "n"),
	/*3a*/	DEFUN("NodeValue", kNodeValue, "Zn"),
	/*3b*/	DEFUN("AddAfter", kAddAfter, "lnn"),
	/*3c*/	DEFUN("AddToFront", kAddToFront, "ln"),
	/*3d*/	DEFUN("AddToEnd", kAddToEnd, "ln"),
	/*3e*/	DEFUN("FindKey", kFindKey, "l."),
	/*3f*/	DEFUN("DeleteKey", kDeleteKey, "l."),
	/*40*/	DEFUN("Random", kRandom, "i*"),
	/*41*/	DEFUN("Abs", kAbs, "Oi"),
	/*42*/	DEFUN("Sqrt", kSqrt, "i"),
	/*43*/	DEFUN("GetAngle", kGetAngle, "iiiii*"), // occasionally KQ6 passes a 5th argument by mistake
	/*44*/	DEFUN("GetDistance", kGetDistance, "iiiii*"),
	/*45*/	DEFUN("Wait", kWait, "i"),
	/*46*/	DEFUN("GetTime", kGetTime, "i*"),
	/*47*/	DEFUN("StrEnd", kStrEnd, "r"),
	/*48*/	DEFUN("StrCat", kStrCat, "rr"),
	/*49*/	DEFUN("StrCmp", kStrCmp, "rri*"),
	/*4a*/	DEFUN("StrLen", kStrLen, "Zr"),
	/*4b*/	DEFUN("StrCpy", kStrCpy, "rZri*"),
	/*4c*/	DEFUN("Format", kFormat, "r.*"),
	/*4d*/	DEFUN("GetFarText", kGetFarText, "iiZr"),
	/*4e*/	DEFUN("ReadNumber", kReadNumber, "r"),
	/*4f*/	DEFUN("BaseSetter", kBaseSetter, "o"),
	/*50*/	DEFUN("DirLoop", kDirLoop, "oi"),
	// Opcode 51 is defined twice for a reason: In older SCI versions
	// it is CanBeHere, whereas in newer version it is CantBeHere
	/*51*/	DEFUN("CanBeHere", kCanBeHere, "ol*"),
	/*51*/	DEFUN("CantBeHere", kCantBeHere, "ol*"),
	/*52*/	DEFUN("OnControl", kOnControl, "i*"),
	/*53*/	DEFUN("InitBresen", kInitBresen, "oi*"),
	/*54*/	DEFUN("DoBresen", kDoBresen, "o"),
	/*55*/	DEFUN("DoAvoider", kDoAvoider, "o"),
	/*56*/	DEFUN("SetJump", kSetJump, "oiii"),
	/*57*/	DEFUN("SetDebug", kSetDebug, "i*"),
	/*5c*/	DEFUN("MemoryInfo", kMemoryInfo, "i"),
	/*5f*/	DEFUN("GetMenu", kGetMenu, "i."),
	/*60*/	DEFUN("SetMenu", kSetMenu, "i.*"),
	/*61*/	DEFUN("GetSaveFiles", kGetSaveFiles, "rrr"),
	/*62*/	DEFUN("GetCWD", kGetCWD, "r"),
	/*63*/	DEFUN("CheckFreeSpace", kCheckFreeSpace, "r.*"),
	/*64*/	DEFUN("ValidPath", kValidPath, "r"),
	/*65*/	DEFUN("CoordPri", kCoordPri, "ii*"),
	/*66*/	DEFUN("StrAt", kStrAt, "rii*"),
	/*67*/	DEFUN("DeviceInfo", kDeviceInfo, "i.*"),
	/*68*/	DEFUN("GetSaveDir", kGetSaveDir, ".*"),	// accepts a parameter in SCI2+ games
	/*69*/	DEFUN("CheckSaveGame", kCheckSaveGame, ".*"),
	/*6a*/	DEFUN("ShakeScreen", kShakeScreen, "ii*"),
	/*6b*/	DEFUN("FlushResources", kFlushResources, "i"),
	/*6c*/	DEFUN("TimesSin", kTimesSin, "ii"),
	/*6d*/	DEFUN("TimesCos", kTimesCos, "ii"),
	/*6e*/	DEFUN("6e", kTimesSin, "ii"),
	/*6f*/	DEFUN("6f", kTimesCos, "ii"),
	/*70*/	DEFUN("Graph", kGraph, ".*"),
	/*71*/	DEFUN("Joystick", kJoystick, ".*"),

	// Experimental functions
	/*74*/	DEFUN("FileIO", kFileIO, "i.*"),
	/*(?)*/	DEFUN("Memory", kMemory, "i.*"),
	/*(?)*/	DEFUN("Sort", kSort, "ooo"),
	/*(?)*/	DEFUN("AvoidPath", kAvoidPath, "ii.*"),
	/*(?)*/	DEFUN("Lock", kLock, "iii*"),
	/*(?)*/	DEFUN("Palette", kPalette, "i.*"),
	/*(?)*/	DEFUN("IsItSkip", kIsItSkip, "iiiii"),
	/*7b*/	DEFUN("StrSplit", kStrSplit, "rrZr"),

	// Non-experimental functions without a fixed ID
	DEFUN("CosMult", kTimesCos, "ii"),
	DEFUN("SinMult", kTimesSin, "ii"),

	// Misc functions
	/*(?)*/	DEFUN("CosDiv", kCosDiv, "ii"),
	/*(?)*/	DEFUN("PriCoord", kPriCoord, "i"),
	/*(?)*/	DEFUN("SinDiv", kSinDiv, "ii"),
	/*(?)*/	DEFUN("TimesCot", kTimesCot, "ii"),
	/*(?)*/	DEFUN("TimesTan", kTimesTan, "ii"),
	DEFUN("Message", kMessage, ".*"),
	DEFUN("GetMessage", kGetMessage, "iiir"),
	DEFUN("DoAudio", kDoAudio, ".*"),
	DEFUN("DoSync", kDoSync, ".*"),
	DEFUN("MemorySegment", kMemorySegment, "iri*"),
	DEFUN("Intersections", kIntersections, "iiiiriiiri"),
	DEFUN("ResCheck", kResCheck, "iii*"),
	DEFUN("SetQuitStr", kSetQuitStr, "r"),
	DEFUN("ShowMovie", kShowMovie, ".*"),
	DEFUN("SetVideoMode", kSetVideoMode, "i"),
	DEFUN("Platform", kPlatform, "i.*"),
	DEFUN("TextColors", kTextColors, ".*"),
	DEFUN("TextFonts", kTextFonts, ".*"),
	DEFUN("Portrait", kPortrait, ".*"),

#ifdef ENABLE_SCI32
	// SCI2 Kernel Functions
	DEFUN("IsHiRes", kIsHiRes, ""),
	DEFUN("Array", kArray, ".*"),
	DEFUN("ListAt", kListAt, "li"),
	DEFUN("String", kString, ".*"),
	DEFUN("AddScreenItem", kAddScreenItem, "o"),
	DEFUN("UpdateScreenItem", kUpdateScreenItem, "o"),
	DEFUN("DeleteScreenItem", kDeleteScreenItem, "o"),
	DEFUN("AddPlane", kAddPlane, "o"),
	DEFUN("DeletePlane", kDeletePlane, "o"),
	DEFUN("UpdatePlane", kUpdatePlane, "o"),
	DEFUN("RepaintPlane", kRepaintPlane, "o"),
	DEFUN("GetHighPlanePri", kGetHighPlanePri, ""),
	DEFUN("FrameOut", kFrameOut, ""),
	DEFUN("ListEachElementDo", kListEachElementDo, "li.*"),
	DEFUN("ListFirstTrue", kListFirstTrue, "li.*"),
	DEFUN("ListAllTrue", kListAllTrue, "li.*"),
	DEFUN("ListIndexOf", kListIndexOf, "lZo"),
	DEFUN("OnMe", kOnMe, "iio.*"),
	DEFUN("InPolygon", kInPolygon, "iio"),
	DEFUN("CreateTextBitmap", kCreateTextBitmap, "iiio"),

	// SCI2.1 Kernel Functions
	DEFUN("Save", kSave, ".*"),
	DEFUN("List", kList, ".*"),
	DEFUN("Robot", kRobot, ".*"),
	DEFUN("IsOnMe", kOnMe, "iio.*"),	// TODO: this seems right, but verify...

#endif

	// its a stub, but its needed for Pharkas to work
	DEFUN("PalVary", kPalVary, "ii*"),
	DEFUN("AssertPalette", kAssertPalette, "i"),

#if 0
	// Stub functions
	/*09*/	DEFUN("Show", kShow, "i"),
	DEFUN("ShiftScreen", kShiftScreen, ".*"),
	DEFUN("ListOps", kListOps, ".*"),
	DEFUN("ATan", kATan, ".*"),
	DEFUN("MergePoly", kMergePoly, ".*"),
	DEFUN("Record", kRecord, ".*"),
	DEFUN("PlayBack", kPlayBack, ".*"),
	DEFUN("DbugStr", kDbugStr, ".*"),
#endif

	{NULL, NULL, NULL} // Terminator
};

Kernel::Kernel(ResourceManager *resMan, SegManager *segMan) : _resMan(resMan), _segMan(segMan) {
	loadSelectorNames();
	mapSelectors();      // Map a few special selectors for later use
}

Kernel::~Kernel() {
	for (KernelFuncsContainer::iterator i = _kernelFuncs.begin(); i != _kernelFuncs.end(); ++i)
		// TODO: Doing a const_cast is not that nice actually... But since KernelFuncWithSignature
		// keeps the signature member as "const char *" there is no way around it.
		// Think of a clever way to avoid this.
		free(const_cast<char *>(i->signature));
}

uint Kernel::getSelectorNamesSize() const {
	return _selectorNames.size();
}

const Common::String &Kernel::getSelectorName(uint selector) const {
	return _selectorNames[selector];
}

uint Kernel::getKernelNamesSize() const {
	return _kernelNames.size();
}

const Common::String &Kernel::getKernelName(uint number) const {
	// FIXME: The following check is a temporary workaround for
	// an issue leading to crashes when using the debugger's backtrace
	// command.
	static const Common::String invalid = "(invalid)";
	if (number >= _kernelNames.size())
		return invalid;
	return _kernelNames[number];
}

int Kernel::findSelector(const char *selectorName) const {
	for (uint pos = 0; pos < _selectorNames.size(); ++pos) {
		if (_selectorNames[pos] == selectorName)
			return pos;
	}

	debugC(2, kDebugLevelVM, "Could not map '%s' to any selector", selectorName);

	return -1;
}

void Kernel::loadSelectorNames() {
	Resource *r = _resMan->findResource(ResourceId(kResourceTypeVocab, VOCAB_RESOURCE_SELECTORS), 0);
	bool oldScriptHeader = (getSciVersion() == SCI_VERSION_0_EARLY);

	if (!r) { // No such resource?
		// Check if we have a table for this game
		// Some demos do not have a selector table
		Common::StringArray staticSelectorTable = checkStaticSelectorNames();

		if (staticSelectorTable.empty())
			error("Kernel: Could not retrieve selector names");
		else
			warning("No selector vocabulary found, using a static one");

		for (uint32 i = 0; i < staticSelectorTable.size(); i++) {
			_selectorNames.push_back(staticSelectorTable[i]);
			if (oldScriptHeader)
				_selectorNames.push_back(staticSelectorTable[i]);
		}

		return;
	}

	int count = READ_LE_UINT16(r->data) + 1; // Counter is slightly off

	for (int i = 0; i < count; i++) {
		int offset = READ_LE_UINT16(r->data + 2 + i * 2);
		int len = READ_LE_UINT16(r->data + offset);

		Common::String tmp((const char *)r->data + offset + 2, len);
		_selectorNames.push_back(tmp);
		//printf("%s\n", tmp.c_str());	// debug

		// Early SCI versions used the LSB in the selector ID as a read/write
		// toggle. To compensate for that, we add every selector name twice.
		if (oldScriptHeader)
			_selectorNames.push_back(tmp);
	}
}

static void kernel_compile_signature(const char **s) {
	const char *src = *s;
	char *result;
	int ellipsis = 0;
	char v;
	int index = 0;

	if (!src)
		return; // NULL signature: Nothing to do

	result = (char *)malloc(strlen(*s) + 1);

	while (*src) {
		char c;
		v = 0;

		if (ellipsis) {
			error("Failed compiling kernel function signature '%s': non-terminal ellipsis '%c'", *s, *src);
		}

		do {
			char cc;
			cc = c = *src++;
			if (c >= 'A' || c <= 'Z')
				cc = c | KSIG_SPEC_SUM_DONE;

			switch (cc) {
			case KSIG_SPEC_LIST:
				v |= KSIG_LIST;
				break;

			case KSIG_SPEC_NODE:
				v |= KSIG_NODE;
				break;

			case KSIG_SPEC_REF:
				v |= KSIG_REF;
				break;

			case KSIG_SPEC_OBJECT:
				v |= KSIG_OBJECT;
				break;

			case KSIG_SPEC_ARITHMETIC:
				v |= KSIG_ARITHMETIC;
				break;

			case KSIG_SPEC_NULL:
				v |= KSIG_NULL;
				break;

			case KSIG_SPEC_ANY:
				v |= KSIG_ANY;
				break;

			case KSIG_SPEC_ELLIPSIS:
				v |= KSIG_ELLIPSIS;
				ellipsis = 1;
				break;

			default:
				error("INTERNAL ERROR when compiling kernel function signature '%s': (%02x) not understood (aka"
				          " '%c')\n", *s, c, c);
			}
		} while (*src && (*src == KSIG_SPEC_ELLIPSIS || (c < 'a' && c != KSIG_SPEC_ANY)));

		// To handle sum types
		result[index++] = v;
	}

	result[index] = 0;
	*s = result; // Write back
}

void Kernel::mapFunctions() {
	int mapped = 0;
	int ignored = 0;
	uint functions_nr = _kernelNames.size();

	_kernelFuncs.resize(functions_nr);

	for (uint functnr = 0; functnr < functions_nr; functnr++) {
		int found = -1;

		// First, get the name, if known, of the kernel function with number functnr
		Common::String sought_name = _kernelNames[functnr];

		// Reset the table entry
		_kernelFuncs[functnr].fun = NULL;
		_kernelFuncs[functnr].signature = NULL;
		_kernelFuncs[functnr].orig_name = sought_name;

		if (sought_name.empty()) {
			// No name was given -> must be an unknown opcode
			warning("Kernel function %x unknown", functnr);
			_kernelFuncs[functnr].isDummy = true;
			continue;
		}

		// Don't map dummy functions - they will never be called
		if (sought_name == "Dummy") {
			_kernelFuncs[functnr].isDummy = true;
			continue;
		}

		// If the name is known, look it up in kfunct_mappers. This table
		// maps kernel func names to actual function (pointers).
		for (uint seeker = 0; (found == -1) && kfunct_mappers[seeker].name; seeker++)
			if (sought_name == kfunct_mappers[seeker].name)
				found = seeker; // Found a kernel function with the correct name!

		if (found == -1) {
			// No match but a name was given -> stub
			warning("Kernel function %s[%x] unmapped", sought_name.c_str(), functnr);
			_kernelFuncs[functnr].isDummy = true;
		} else {
			// A match in kfunct_mappers was found
			if (kfunct_mappers[found].fun) {
				_kernelFuncs[functnr].fun = kfunct_mappers[found].fun;
				_kernelFuncs[functnr].signature = kfunct_mappers[found].signature;
				_kernelFuncs[functnr].isDummy = false;
				kernel_compile_signature(&(_kernelFuncs[functnr].signature));
				++mapped;
			} else {
				//warning("Ignoring function %s\n", kfunct_mappers[found].name);
				++ignored;
			}
		}
	} // for all functions requesting to be mapped

	debugC(2, kDebugLevelVM, "Handled %d/%d kernel functions, mapping %d and ignoring %d.",
				mapped + ignored, _kernelNames.size(), mapped, ignored);

	return;
}

int Kernel::findRegType(reg_t reg) {
	// No segment? Must be arithmetic
	if (!reg.segment)
		return reg.offset ? KSIG_ARITHMETIC : KSIG_ARITHMETIC | KSIG_NULL;

	// Otherwise it's an object
	SegmentObj *mobj = _segMan->getSegmentObj(reg.segment);
	if (!mobj)
		return 0; // Invalid

	if (!mobj->isValidOffset(reg.offset))
		warning("[KERN] ref %04x:%04x is invalid", PRINT_REG(reg));

	switch (mobj->getType()) {
	case SEG_TYPE_SCRIPT:
		if (reg.offset <= (*(Script *)mobj)._bufSize &&
			reg.offset >= -SCRIPT_OBJECT_MAGIC_OFFSET &&
		    RAW_IS_OBJECT((*(Script *)mobj)._buf + reg.offset)) {
			return ((Script *)mobj)->getObject(reg.offset) ? KSIG_OBJECT : KSIG_REF;
		} else
			return KSIG_REF;
	case SEG_TYPE_CLONES:
		return KSIG_OBJECT;
	case SEG_TYPE_LOCALS:
	case SEG_TYPE_STACK:
	case SEG_TYPE_SYS_STRINGS:
	case SEG_TYPE_DYNMEM:
	case SEG_TYPE_HUNK:
#ifdef ENABLE_SCI32
	case SEG_TYPE_ARRAY:
	case SEG_TYPE_STRING:
#endif
		return KSIG_REF;
	case SEG_TYPE_LISTS:
		return KSIG_LIST;
	case SEG_TYPE_NODES:
		return KSIG_NODE;
	default:
		return 0;
	}
}

bool Kernel::signatureMatch(const char *sig, int argc, const reg_t *argv) {
	// Always "match" if no signature is given
	if (!sig)
		return true;

	while (*sig && argc) {
		if ((*sig & KSIG_ANY) != KSIG_ANY) {
			int type = findRegType(*argv);

			if (!type) {
				warning("[KERN] Could not determine type of ref %04x:%04x; failing signature check", PRINT_REG(*argv));
				return false;
			}

			if (!(type & *sig)) {
				warning("kernel_matches_signature: %d args left, is %d, should be %d", argc, type, *sig);
				return false;
			}

		}
		if (!(*sig & KSIG_ELLIPSIS))
			++sig;
		++argv;
		--argc;
	}

	if (argc) {
		warning("kernel_matches_signature: too many arguments");
		return false; // Too many arguments
	}
	if (*sig == 0 || (*sig & KSIG_ELLIPSIS))
		return true;
	warning("kernel_matches_signature: too few arguments");
	return false;
}

void Kernel::setDefaultKernelNames(Common::String gameId) {
	_kernelNames = Common::StringArray(sci_default_knames, SCI_KNAMES_DEFAULT_ENTRIES_NR);

	// Some (later) SCI versions replaced CanBeHere by CantBeHere
	if (_selectorCache.cantBeHere != -1)
		_kernelNames[0x4d] = "CantBeHere";

	switch (getSciVersion()) {
	case SCI_VERSION_0_EARLY:
	case SCI_VERSION_0_LATE:
		// Insert SCI0 file functions after SetCursor (0x28)
		_kernelNames.insert_at(0x29, "FOpen");
		_kernelNames.insert_at(0x2A, "FPuts");
		_kernelNames.insert_at(0x2B, "FGets");
		_kernelNames.insert_at(0x2C, "FClose");

		// Function 0x55 is DoAvoider
		_kernelNames[0x55] = "DoAvoider";

		// Cut off unused functions
		_kernelNames.resize(0x72);
		break;

	case SCI_VERSION_01:
		// Multilingual SCI01 games have StrSplit as function 0x78
		_kernelNames[0x78] = "StrSplit";

		// Cut off unused functions
		_kernelNames.resize(0x79);
		break;

	case SCI_VERSION_1_LATE:
		_kernelNames[0x71] = "MoveCursor";
		break;

	case SCI_VERSION_1_1:
		// In KQ6 CD, the empty kSetSynonyms function has been replaced
		// with kPortrait. In KQ6 Mac, kPlayBack has been replaced by
		// kShowMovie.
		if (gameId == "kq6") {
			if (g_sci->getPlatform() == Common::kPlatformMacintosh)
				_kernelNames[0x84] = "ShowMovie";
			else
				_kernelNames[0x26] = "Portrait";
		}

		_kernelNames[0x71] = "PalVary";
		_kernelNames[0x7c] = "Message";
		break;

	default:
		// Use default table for the other versions
		break;
	}
}

bool Kernel::loadKernelNames(Common::String gameId) {
	_kernelNames.clear();

#ifdef ENABLE_SCI32
	if (getSciVersion() >= SCI_VERSION_2_1)
		setKernelNamesSci21();
	else if (getSciVersion() == SCI_VERSION_2)
		setKernelNamesSci2();
	else
#endif
		setDefaultKernelNames(gameId);

	mapFunctions();
	return true;
}

Common::String Kernel::lookupText(reg_t address, int index) {
	char *seeker;
	Resource *textres;

	if (address.segment)
		return _segMan->getString(address);
	else {
		int textlen;
		int _index = index;
		textres = _resMan->findResource(ResourceId(kResourceTypeText, address.offset), 0);

		if (!textres) {
			error("text.%03d not found", address.offset);
			return NULL; /* Will probably segfault */
		}

		textlen = textres->size;
		seeker = (char *) textres->data;

		while (index--)
			while ((textlen--) && (*seeker++))
				;

		if (textlen)
			return seeker;
		else {
			error("Index %d out of bounds in text.%03d", _index, address.offset);
			return NULL;
		}

	}
}

} // End of namespace Sci