aboutsummaryrefslogtreecommitdiff
path: root/backends/gp32/gp32std.cpp
blob: ce4f129c2e751b00c4871b2fd553d9dd68785ec5 (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
/* ScummVM - Scumm Interpreter
 * Copyright (C) 2001-2006 The ScummVM project
 * Copyright (C) 2002 Ph0x - GP32 Backend
 * Copyright (C) 2003/2004 DJWillis - GP32 Backend
 * Copyright (C) 2005 Won Star - GP32 Backend
 *
 * 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 "stdafx.h"
#include "common/scummsys.h"
#include "common/scaler.h"
#include "common/system.h"
#include "backends/intern.h"

#include "base/engine.h"

#include "backends/gp32/gp32std.h"
#include "backends/gp32/gp32std_grap.h"

FILE *gp_stderr = NULL;
FILE *gp_stdout = NULL;
FILE *gp_stdin = NULL;

#define DEBUG_MAX 4
char debline[DEBUG_MAX][256];
static int debnext = 0;

void _dprintf(const char *s, ...) {
	int deba, deb;
	char buf[1024];
	va_list va;

	va_start(va, s);
	vsprintf(buf, s, va);
	va_end(va);

	strcpy(debline[debnext], buf);

	gp_fillRect(frameBuffer1, 0, 200, 320, 40, 0);
	
	for (deb = debnext + 1, deba = 0; deb < DEBUG_MAX; deb++, deba++) {
		gp_textOut(frameBuffer1, 0, 200 + 8 * deba, debline[deb], 0xFFFF);
	}
	for (deb = 0; deb <= debnext; deb++, deba++) {
		gp_textOut(frameBuffer1, 0, 200 + 8 * deba, debline[deb], 0xFFFF);
	}
	debnext++;
	if (debnext == DEBUG_MAX)
		debnext = 0;
}

//////////////////
//File functions
// FOR LATER USE
/*
#define SM_PATH_SIZE		256

const char smRootPath[] = "gp:\\";
char smCurrentPath[SM_PATH_SIZE] = "gp:\\";		// must end with '\'

int smMakePath(const char *path, char *smPath) {
  // copy root or current directory
  {
    const char *p;
    if ((*path == '/') || (*path == '\\'))
    {
      path++;
      p = smRootPath;
    }
    else
      p = smCurrentPath;
    while (*p) *smPath++ = *p++;
  }

  // add filenames/directories. remove "." & ".."
  do
  {
    switch (*path)
    {
    case 0:
    case '/':
    case '\\':
      if (*(smPath-1) == '\\')
      {
        // already ends with '\'
      }
      else if ((*(smPath-1) == '.') && (*(smPath-2) == '\\'))
      {
        smPath--;	// remove '.' and end with '\'
      }
      else if ((*(smPath-1) == '.') && (*(smPath-2) == '.') && (*(smPath-3) == '\\'))
      {
        smPath -= 3;	// remove "\.."
        if (*(smPath-1) == ':') *smPath++ = '\\';	// "dev0:" -> "dev0:\"
        else while (*(smPath-1) != '\\') smPath--;	// remove one directory and end with '\'
      }
      else
      {
        *smPath++ = '\\';	// just add '\'
      }
      break;

    default:
      *smPath++ = *path;
      break;
    }
  }
  while (*path++);
  
  *smPath = '\\';

//  *--smPath = 0;	// remove last '\' and null-terminate
  *smPath = 0;	// remove last '\' and null-terminate

  return 0;
}
*/
GPFILE *gp_fopen(const char *fileName, const char *openMode) {
	//FIXME: allocation, mode, malloc -> new
	uint32 mode;
	GPFILE *file;
	ERR_CODE err;
	char s[256];

	if (!strchr(fileName, '.')) {
		sprintf(s, "%s.", fileName);
		fileName = s;
	}

	file = (GPFILE *)malloc(sizeof(GPFILE));

//	NP("%s(\"%s\", \"%s\")", __FUNCTION__, fileName, openMode);

	// FIXME add binary/text support
	if (tolower(openMode[0]) == 'r') {
		mode = OPEN_R;
		GpFileGetSize(fileName, &file->size);
		err = GpFileOpen(fileName, mode, &file->handle);
	} else if (tolower(openMode[0]) == 'w') {
		//printf("open if as W");
		file->size = 0;	// FIXME? new file has no size?
		file->cachePos = 0;
		mode = OPEN_W;
		err = GpFileCreate(fileName, ALWAYS_CREATE, &file->handle);
	} else if (tolower(openMode[0]) == 'a') {
		warning("We do not support 'a' file open mode.");
		free(file);
		return NULL;
	} else {
		error("wrong file mode");
	}

	if (!file) {
		error("%s: cannot create FILE structure", __FUNCTION__);
	}
	if (err) {
//		BP("%s: IO error %d", __FUNCTION__, err);
		free(file);
		return NULL;
	}

	return file;
}

int gp_fclose(GPFILE *stream) {
	if (!stream) {
		//warning("closing null file");
		return 1;
	}

/*	if (*(uint32 *)((char *)stream - sizeof(uint32)) == 0x4321) {
		debug(0, "Double closing", __FUNCTION__);
		return 1;
	}
*/

	if (stream->cachePos) {
		GpFileWrite(stream->handle, (char *)stream->cacheData, stream->cachePos); // flush cache
		stream->cachePos = 0;
	}

	ERR_CODE err = GpFileClose(stream->handle);
	free(stream);

	return err;
}

int gp_fseek(GPFILE *stream, long offset, int whence) {
	ulong dummy;

	switch (whence) {
	case SEEK_SET:
		whence = FROM_BEGIN;
		break;
	case SEEK_CUR:
		whence = FROM_CURRENT;
		break;
	case SEEK_END:
		whence = FROM_END;
		break;
	}
	return GpFileSeek(stream->handle, whence, offset, (long *)&dummy);
}

//TODO: read cache
size_t gp_fread(void *ptr, size_t size, size_t n, GPFILE *stream) {
	ulong readcount = 0;
	ERR_CODE err = GpFileRead(stream->handle, ptr, size * n, &readcount); //fixme? size*n
	return readcount / size;	//FIXME?
}

size_t gp_fwrite(const void *ptr, size_t size, size_t n, GPFILE *stream) {
	int len = size * n;

	if (!stream) {
		//warning("writing to null file");
		return 0;
	}

	if (stream->cachePos + len < FCACHE_SIZE) {
		memcpy(stream->cacheData + stream->cachePos, ptr, len);
		stream->cachePos += len;
	} else {
		if (stream->cachePos) {
			GpFileWrite(stream->handle, stream->cacheData, stream->cachePos);	// flush cache
			stream->cachePos = 0;
		}

		ERR_CODE err = GpFileWrite(stream->handle, ptr, len);
		if (!err)
			return n;
		else
			return -err;
	}
	return 0;
}

//FIXME? use standard func
long gp_ftell(GPFILE *stream) {
	ulong pos = 0;
	ERR_CODE err = GpFileSeek(stream->handle, FROM_CURRENT, 0, (long*)&pos);
	return pos;
}

void gp_clearerr(GPFILE *stream)
{
}

//FIXME!
int gp_feof(GPFILE *stream) {
	return gp_ftell(stream) >= stream->size;
}

char gp_fgetc(GPFILE *stream) {
	char c[1];

	gp_fread(&c[0], 1, 1, stream);
	return c[0];
}

char *gp_fgets(char *s, int n, GPFILE *stream) {
	int i = 0;

	while (!gp_feof(stream) && i < n) {
		gp_fread(&s[i], 1, 1, stream);
		if (s[i] == '\n') {
			s[i + 1] = 0;
			return s;
		}
		i++;
	}
	if (gp_feof(stream))
		return NULL;
	else
		return s;
}

int gp_fprintf(GPFILE *stream, const char *fmt, ...) {
	char s[256];
	va_list marker;

	va_start(marker, fmt);
	vsnprintf(s, 256, fmt, marker);
	va_end(marker);

	return gp_fwrite(s, 1, strlen(s), stream);
}

int gp_fflush(GPFILE *stream) {
	return 0;
}

int gp_ferror(GPFILE *stream) {
	return 0;
}

/////////////////////
//Memory management
#undef memcpy
#undef memset
void *gp_memcpy(void *dst, const void *src, size_t count) {
	return memcpy(dst, src, count);
}

void *gp_memset(void *dst, int val, size_t count) {
	return memset(dst, val, count);
}

void *gp_malloc(size_t size) {
	uint32 np;
	uint32 *up;

	np = (uint32) gm_malloc(size + sizeof(uint32));

	if (np) {
		up = (uint32 *) np;
		*up = 0x1234;
		return (void *)(np + sizeof(uint32));
	}

	return NULL;
}

void *gp_calloc(size_t nitems, size_t size) {
	void *p = gp_malloc(nitems * size);	//gpcalloc doesnt clear?

	gp_memset(p, 0, nitems * size);

//	if (*(uint8 *)p != 0)
//		warning("%s: calloc doesn't clear!", __FUNCTION__);	//fixme: was error

	return p;
}

void gp_free(void *block) {
	uint32 np;
	uint32 *up;

	if (!block) {
		return;
	}

	np = ((uint32) block) - sizeof(uint32);
	up = (uint32 *) np;
	if (*up == 0x4321) {
		warning("%s: double deallocation!", __FUNCTION__);
		return;
	}

	if (*up != 0x1234) {
		warning("%s: corrupt block!", __FUNCTION__);
		return;
	}
	*up = 0x4321;

	gm_free(up);
}

//////////////////////////////////////////////////
// GP32 stuff
//////////////////////////////////////////////////
void *operator new(size_t size) {
//	printf("BP:operator new(%d)", size);
	return memset(malloc(size), 0xE7, size);
}

void operator delete(void *ptr) {
//	printf("operator delete(%x)", ptr);
	free(ptr);
}

////////////////////
//String functions
char *gp_strcpy(char *dst, const char *src) {
	char *pDst = dst;

	while (*pDst++ = *src++)
		;

	return dst;
}

char *gp_strncpy(char *dst, const char *src, size_t count) {
	char *start = dst;

	while (count && (*dst++ = *src++))
		count--;

	if (count)
		while (--count)
			*dst++ = '\0';

	return start;
}

char *gp_strcat(char *dst, const char *src) {
	char *pDst = dst;

	while (*pDst)
		pDst++;

	while (*pDst++ = *src++)
		;

	return dst;

}

char *gp_strdup(const char *str) {
        char *memory;

        if (!str)
                return NULL;

        if (memory = (char *)malloc(strlen(str) + 1))
                return gp_strcpy(memory, str);

        return NULL;
}

int gp_strcasecmp(const char *dst, const char *src) {
	int f, l;
	do {
		f = tolower((unsigned char)(*(dst++)));
		l = tolower((unsigned char)(*(src++)));
	} while (f && (f == l));

	return f - l;
}

int gp_strncasecmp(const char *dst, const char *src, size_t count) {
	int f,l;

	if (count) {
		do {
			f = tolower((unsigned char)(*(dst++)));
			l = tolower((unsigned char)(*(src++)));
		} while (--count && f && (f == l));
		return f - l;
	}

	return 0;
}

//FIXME: Handle LONG string
void gp_sprintf(char *str, const char *fmt, ...) {
	char s[512];
	va_list marker;

	va_start(marker, fmt);
	vsnprintf(s, 512, fmt, marker);
	va_end(marker);

	gp_strcpy(str, s);
}

int gp_printf(const char *fmt, ...) {
	char s[256];
	va_list marker;

	va_start(marker, fmt);
	vsnprintf(s, 256, fmt, marker);
	va_end(marker);

	_dprintf("%s", s);
	//gp_delay(100);
	return 0;
}

void gp_delay(uint32 msecs) {
	int startTime = GpTickCountGet();
	while (GpTickCountGet() < startTime + msecs);
}

void gp_clockSpeedChange(int freq, int magic, int div) {
	#define rTCFG0 (*(volatile unsigned *)0x15100000)
	#define rTCFG1 (*(volatile unsigned *)0x15100004)
	#define rTCNTB4 (*(volatile unsigned *)0x1510003c)
	unsigned int pclk;
	unsigned int prescaler0;

	// Change CPU Speed
	GpClockSpeedChange(freq, magic, div);
	pclk = GpPClkGet();

	// Repair SDK timer - it forgets to set prescaler
	prescaler0 = (pclk / (8000 * 40)) - 1;
	rTCFG0 = (rTCFG0 & 0xFFFFFF00) | prescaler0;
	rTCFG1 = 0x30033;

	// Repair GpTickCountGet
	rTCNTB4 = pclk / 1600;
}

void gp_setCpuSpeed(int freq) {
	// Default value for 40 mhz
	static int CLKDIV = 0x48013;
	static int MCLK = 40000000;
	static int CLKMODE = 0;
	static int HCLK = 40000000;
	static int PCLK = 40000000;

	switch (freq) {
		// overclocked
		case 168: { CLKDIV = 0x14000; MCLK = 168000000; CLKMODE = 3; break; }
		case 172: { CLKDIV = 0x23010; MCLK = 172000000; CLKMODE = 3; break; }
		case 176: { CLKDIV = 0x24010; MCLK = 176000000; CLKMODE = 3; break; }
		case 180: { CLKDIV = 0x16000; MCLK = 180000000; CLKMODE = 3; break; }
		case 184: { CLKDIV = 0x26010; MCLK = 184000000; CLKMODE = 3; break; }
		case 188: { CLKDIV = 0x27010; MCLK = 188000000; CLKMODE = 3; break; }
		case 192: { CLKDIV = 0x18000; MCLK = 192000000; CLKMODE = 3; break; }
		case 196: { CLKDIV = 0x29010; MCLK = 196000000; CLKMODE = 3; break; }
		case 200: { CLKDIV = 0x2A010; MCLK = 200000000; CLKMODE = 3; break; }
		case 204: { CLKDIV = 0x2b010; MCLK = 204000000; CLKMODE = 3; break; }
		case 208: { CLKDIV = 0x2c010; MCLK = 208000000; CLKMODE = 3; break; }
		case 212: { CLKDIV = 0x2d010; MCLK = 212000000; CLKMODE = 3; break; }
		case 216: { CLKDIV = 0x2e010; MCLK = 216000000; CLKMODE = 3; break; }
		case 220: { CLKDIV = 0x2f010; MCLK = 220000000; CLKMODE = 3; break; }
		case 224: { CLKDIV = 0x30010; MCLK = 224000000; CLKMODE = 3; break; }
		case 228: { CLKDIV = 0x1e000; MCLK = 228000000; CLKMODE = 3; break; }
		case 232: { CLKDIV = 0x32010; MCLK = 232000000; CLKMODE = 3; break; }
		case 236: { CLKDIV = 0x33010; MCLK = 236000000; CLKMODE = 3; break; }
		case 240: { CLKDIV = 0x20000; MCLK = 240000000; CLKMODE = 3; break; }
		case 244: { CLKDIV = 0x35010; MCLK = 244000000; CLKMODE = 3; break; }
		case 248: { CLKDIV = 0x36010; MCLK = 248000000; CLKMODE = 3; break; }
		case 252: { CLKDIV = 0x22000; MCLK = 252000000; CLKMODE = 3; break; }
		case 256: { CLKDIV = 0x38010; MCLK = 256000000; CLKMODE = 3; break; }

		// normal
//		case 166: { CLKDIV = 0x4B011; MCLK = 166000000; CLKMODE = 3; break; }
		case 166: { CLKDIV = 0x2f001; MCLK = 165000000; CLKMODE = 3; break; }
		case 164: { CLKDIV = 0x4a011; MCLK = 164000000; CLKMODE = 3; break; }
		case 160: { CLKDIV = 0x48011; MCLK = 160000000; CLKMODE = 3; break; }
		case 156: { CLKDIV = 0x2c001; MCLK = 156000000; CLKMODE = 3; break; }
		case 144: { CLKDIV = 0x28001; MCLK = 144000000; CLKMODE = 3; break; }
		case 133: { CLKDIV = 0x51021; MCLK = 133500000; CLKMODE = 2; break; }
		case 132: { CLKDIV = 0x3a011; MCLK = 132000000; CLKMODE = 3; break; }
		case 120: { CLKDIV = 0x24001; MCLK = 120000000; CLKMODE = 2; break; }
		case 100: { CLKDIV = 0x2b011; MCLK = 102000000; CLKMODE = 2; break; }
		case  66: { CLKDIV = 0x25002; MCLK = 67500000; CLKMODE = 2; break; }
		case  50: { CLKDIV = 0x2a012; MCLK = 50000000; CLKMODE = 0; break; }
//		case  40: { CLKDIV = 0x48013; MCLK = 40000000; CLKMODE = 0; break; }
		case  40: { CLKDIV = 0x48013; MCLK = 40000000; CLKMODE = 1; break; }
//		case  33: { CLKDIV = 0x25003; MCLK = 33750000; CLKMODE = 0; break; }
		case  33: { CLKDIV = 0x25003; MCLK = 33750000; CLKMODE = 2; break; }
		case  22: { CLKDIV = 0x33023; MCLK = 22125000; CLKMODE = 0; break; }
		default:
			error("Invalid CPU frequency!");
	}
	if (CLKMODE == 0) { HCLK = MCLK;     PCLK = MCLK; }
	if (CLKMODE == 1) { HCLK = MCLK;     PCLK = MCLK / 2; }
	if (CLKMODE == 2) { HCLK = MCLK / 2; PCLK = MCLK / 2; }
	if (CLKMODE == 3) { HCLK = MCLK / 2; PCLK = MCLK / 4; }

	gp_clockSpeedChange(MCLK, CLKDIV, CLKMODE);
}

void gp_Reset() {
   gp_setCpuSpeed(66);
   asm volatile("swi #4\n");
}

void gp_exit(int code) {
	if (!code) {
		printf("  ----------------------------------------");
		printf("       Your GP32 is now restarting...     ");
		printf("  ----------------------------------------");
		printf("");

		gp_delay(3000);

		GpAppExit();
	} else {
		printf("Exit Code %d", code);
		while (1);
	}
}

// Debug functions
void GPDEBUG(const char *fmt, ...) {
	char s[256];
	va_list marker;

	va_start(marker, fmt);
	vsnprintf(s, 256, fmt, marker);
	va_end(marker);

	_dprintf("%s", s);
}

void NP(const char *fmt, ...) {
	return;
	char s[256];
	va_list marker;

	va_start(marker, fmt);
	vsnprintf(s, 256, fmt, marker);
	va_end(marker);

	_dprintf("NP:%s", s);
	gp_delay(50);
}

void LP(const char *fmt, ...) {
	return;
	char s[256];
	va_list marker;

	va_start(marker, fmt);
	vsnprintf(s, 256, fmt, marker);
	va_end(marker);

	_dprintf("LP:%s", s);
	gp_delay(300);
}

void SP(const char *fmt, ...) {
	return;
	char s[256];
	va_list marker;

	va_start(marker, fmt);
	vsnprintf(s, 256, fmt, marker);
	va_end(marker);

	_dprintf("SP:%s", s);
	gp_delay(50);
}

void BP(const char *fmt, ...) {
	return;
	char s[256];
	va_list marker;

	va_start(marker, fmt);
	vsnprintf(s, 256, fmt, marker);
	va_end(marker);

	_dprintf("BP:%s", s);
	gp_delay(2000);
}