src/gb/core.c (view raw)
1/* Copyright (c) 2013-2016 Jeffrey Pfau
2 *
3 * This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6#include <mgba/gb/core.h>
7
8#include <mgba/core/core.h>
9#include <mgba/internal/debugger/symbols.h>
10#include <mgba/internal/gb/cheats.h>
11#include <mgba/internal/gb/debugger/symbols.h>
12#include <mgba/internal/gb/extra/cli.h>
13#include <mgba/internal/gb/io.h>
14#include <mgba/internal/gb/gb.h>
15#include <mgba/internal/gb/mbc.h>
16#include <mgba/internal/gb/overrides.h>
17#include <mgba/internal/gb/renderers/software.h>
18#include <mgba/internal/gb/renderers/proxy.h>
19#include <mgba/internal/gb/serialize.h>
20#include <mgba/internal/lr35902/lr35902.h>
21#include <mgba/internal/lr35902/debugger/debugger.h>
22#include <mgba-util/crc32.h>
23#include <mgba-util/memory.h>
24#include <mgba-util/patch.h>
25#include <mgba-util/vfs.h>
26
27static const struct mCoreChannelInfo _GBVideoLayers[] = {
28 { 0, "bg", "Background", NULL },
29 { 1, "obj", "Objects", NULL },
30 { 2, "win", "Window", NULL },
31};
32
33static const struct mCoreChannelInfo _GBAudioChannels[] = {
34 { 0, "ch1", "Channel 1", "Square/Sweep" },
35 { 1, "ch2", "Channel 2", "Square" },
36 { 2, "ch3", "Channel 3", "PCM" },
37 { 3, "ch4", "Channel 4", "Noise" },
38};
39
40static const struct LR35902Segment _GBSegments[] = {
41 { .name = "ROM", .start = GB_BASE_CART_BANK1, .end = GB_BASE_VRAM },
42 { .name = "RAM", .start = GB_BASE_EXTERNAL_RAM, .end = GB_BASE_WORKING_RAM_BANK0 },
43 { 0 }
44};
45
46static const struct LR35902Segment _GBCSegments[] = {
47 { .name = "ROM", .start = GB_BASE_CART_BANK1, .end = GB_BASE_VRAM },
48 { .name = "RAM", .start = GB_BASE_EXTERNAL_RAM, .end = GB_BASE_WORKING_RAM_BANK0 },
49 { .name = "WRAM", .start = GB_BASE_WORKING_RAM_BANK1, .end = 0xE000 },
50 { .name = "VRAM", .start = GB_BASE_VRAM, .end = GB_BASE_EXTERNAL_RAM },
51 { 0 }
52};
53
54static const struct mCoreMemoryBlock _GBMemoryBlocks[] = {
55 { -1, "mem", "All", "All", 0, 0x10000, 0x10000, mCORE_MEMORY_VIRTUAL },
56 { GB_REGION_CART_BANK0, "cart0", "ROM Bank", "Game Pak (32kiB)", GB_BASE_CART_BANK0, GB_SIZE_CART_BANK0 * 2, 0x800000, mCORE_MEMORY_READ | mCORE_MEMORY_MAPPED, 511 },
57 { GB_REGION_VRAM, "vram", "VRAM", "Video RAM (8kiB)", GB_BASE_VRAM, GB_BASE_VRAM + GB_SIZE_VRAM, GB_SIZE_VRAM, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED },
58 { GB_REGION_EXTERNAL_RAM, "sram", "SRAM", "External RAM (8kiB)", GB_BASE_EXTERNAL_RAM, GB_BASE_EXTERNAL_RAM + GB_SIZE_EXTERNAL_RAM, GB_SIZE_EXTERNAL_RAM * 4, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED, 3 },
59 { GB_REGION_WORKING_RAM_BANK0, "wram", "WRAM", "Working RAM (8kiB)", GB_BASE_WORKING_RAM_BANK0, GB_BASE_WORKING_RAM_BANK0 + GB_SIZE_WORKING_RAM_BANK0 * 2 , GB_SIZE_WORKING_RAM_BANK0 * 2, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED },
60 { GB_BASE_OAM, "oam", "OAM", "OBJ Attribute Memory", GB_BASE_OAM, GB_BASE_OAM + GB_SIZE_OAM, GB_SIZE_OAM, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED },
61 { GB_BASE_IO, "io", "MMIO", "Memory-Mapped I/O", GB_BASE_IO, GB_BASE_IO + GB_SIZE_IO, GB_SIZE_IO, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED },
62 { GB_BASE_HRAM, "hram", "HRAM", "High RAM", GB_BASE_HRAM, GB_BASE_HRAM + GB_SIZE_HRAM, GB_SIZE_HRAM, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED },
63};
64
65static const struct mCoreMemoryBlock _GBCMemoryBlocks[] = {
66 { -1, "mem", "All", "All", 0, 0x10000, 0x10000, mCORE_MEMORY_VIRTUAL },
67 { GB_REGION_CART_BANK0, "cart0", "ROM Bank", "Game Pak (32kiB)", GB_BASE_CART_BANK0, GB_SIZE_CART_BANK0 * 2, 0x800000, mCORE_MEMORY_READ | mCORE_MEMORY_MAPPED, 511 },
68 { GB_REGION_VRAM, "vram", "VRAM", "Video RAM (8kiB)", GB_BASE_VRAM, GB_BASE_VRAM + GB_SIZE_VRAM, GB_SIZE_VRAM * 2, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED, 1 },
69 { GB_REGION_EXTERNAL_RAM, "sram", "SRAM", "External RAM (8kiB)", GB_BASE_EXTERNAL_RAM, GB_BASE_EXTERNAL_RAM + GB_SIZE_EXTERNAL_RAM, GB_SIZE_EXTERNAL_RAM * 4, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED, 3 },
70 { GB_REGION_WORKING_RAM_BANK0, "wram", "WRAM", "Working RAM (8kiB)", GB_BASE_WORKING_RAM_BANK0, GB_BASE_WORKING_RAM_BANK0 + GB_SIZE_WORKING_RAM_BANK0 * 2, GB_SIZE_WORKING_RAM_BANK0 * 8, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED, 7 },
71 { GB_BASE_OAM, "oam", "OAM", "OBJ Attribute Memory", GB_BASE_OAM, GB_BASE_OAM + GB_SIZE_OAM, GB_SIZE_OAM, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED },
72 { GB_BASE_IO, "io", "MMIO", "Memory-Mapped I/O", GB_BASE_IO, GB_BASE_IO + GB_SIZE_IO, GB_SIZE_IO, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED },
73 { GB_BASE_HRAM, "hram", "HRAM", "High RAM", GB_BASE_HRAM, GB_BASE_HRAM + GB_SIZE_HRAM, GB_SIZE_HRAM, mCORE_MEMORY_RW | mCORE_MEMORY_MAPPED },
74};
75
76struct mVideoLogContext;
77struct GBCore {
78 struct mCore d;
79 struct GBVideoSoftwareRenderer renderer;
80 struct GBVideoProxyRenderer proxyRenderer;
81 struct mVideoLogContext* logContext;
82 struct mCoreCallbacks logCallbacks;
83 uint8_t keys;
84 struct mCPUComponent* components[CPU_COMPONENT_MAX];
85 const struct Configuration* overrides;
86 struct mDebuggerPlatform* debuggerPlatform;
87 struct mCheatDevice* cheatDevice;
88};
89
90static bool _GBCoreInit(struct mCore* core) {
91 struct GBCore* gbcore = (struct GBCore*) core;
92
93 struct LR35902Core* cpu = anonymousMemoryMap(sizeof(struct LR35902Core));
94 struct GB* gb = anonymousMemoryMap(sizeof(struct GB));
95 if (!cpu || !gb) {
96 free(cpu);
97 free(gb);
98 return false;
99 }
100 core->cpu = cpu;
101 core->board = gb;
102 gbcore->overrides = NULL;
103 gbcore->debuggerPlatform = NULL;
104 gbcore->cheatDevice = NULL;
105
106 GBCreate(gb);
107 memset(gbcore->components, 0, sizeof(gbcore->components));
108 LR35902SetComponents(cpu, &gb->d, CPU_COMPONENT_MAX, gbcore->components);
109 LR35902Init(cpu);
110 mRTCGenericSourceInit(&core->rtc, core);
111 gb->memory.rtc = &core->rtc.d;
112
113 GBVideoSoftwareRendererCreate(&gbcore->renderer);
114 gbcore->renderer.outputBuffer = NULL;
115
116 gbcore->keys = 0;
117 gb->keySource = &gbcore->keys;
118
119#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
120 mDirectorySetInit(&core->dirs);
121#endif
122
123 return true;
124}
125
126static void _GBCoreDeinit(struct mCore* core) {
127 LR35902Deinit(core->cpu);
128 GBDestroy(core->board);
129 mappedMemoryFree(core->cpu, sizeof(struct LR35902Core));
130 mappedMemoryFree(core->board, sizeof(struct GB));
131#if defined USE_DEBUGGERS && (!defined(MINIMAL_CORE) || MINIMAL_CORE < 2)
132 mDirectorySetDeinit(&core->dirs);
133 if (core->symbolTable) {
134 mDebuggerSymbolTableDestroy(core->symbolTable);
135 }
136#endif
137
138 struct GBCore* gbcore = (struct GBCore*) core;
139 free(gbcore->debuggerPlatform);
140 if (gbcore->cheatDevice) {
141 mCheatDeviceDestroy(gbcore->cheatDevice);
142 }
143 free(gbcore->cheatDevice);
144 mCoreConfigFreeOpts(&core->opts);
145 free(core);
146}
147
148static enum mPlatform _GBCorePlatform(const struct mCore* core) {
149 UNUSED(core);
150 return PLATFORM_GB;
151}
152
153static void _GBCoreSetSync(struct mCore* core, struct mCoreSync* sync) {
154 struct GB* gb = core->board;
155 gb->sync = sync;
156}
157
158static void _GBCoreLoadConfig(struct mCore* core, const struct mCoreConfig* config) {
159 UNUSED(config);
160
161 struct GB* gb = core->board;
162 if (core->opts.mute) {
163 gb->audio.masterVolume = 0;
164 } else {
165 gb->audio.masterVolume = core->opts.volume;
166 }
167 gb->video.frameskip = core->opts.frameskip;
168
169 int color;
170 if (mCoreConfigGetIntValue(config, "gb.pal[0]", &color)) {
171 GBVideoSetPalette(&gb->video, 0, color);
172 }
173 if (mCoreConfigGetIntValue(config, "gb.pal[1]", &color)) {
174 GBVideoSetPalette(&gb->video, 1, color);
175 }
176 if (mCoreConfigGetIntValue(config, "gb.pal[2]", &color)) {
177 GBVideoSetPalette(&gb->video, 2, color);
178 }
179 if (mCoreConfigGetIntValue(config, "gb.pal[3]", &color)) {
180 GBVideoSetPalette(&gb->video, 3, color);
181 }
182
183 mCoreConfigCopyValue(&core->config, config, "gb.bios");
184 mCoreConfigCopyValue(&core->config, config, "gbc.bios");
185
186#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
187 struct GBCore* gbcore = (struct GBCore*) core;
188 gbcore->overrides = mCoreConfigGetOverridesConst(config);
189#endif
190}
191
192static void _GBCoreDesiredVideoDimensions(struct mCore* core, unsigned* width, unsigned* height) {
193 struct GB* gb = core->board;
194 if (!gb || gb->model != GB_MODEL_SGB) {
195 *width = GB_VIDEO_HORIZONTAL_PIXELS;
196 *height = GB_VIDEO_VERTICAL_PIXELS;
197 } else {
198 *width = 256;
199 *height = 224;
200 }
201}
202
203static void _GBCoreSetVideoBuffer(struct mCore* core, color_t* buffer, size_t stride) {
204 struct GBCore* gbcore = (struct GBCore*) core;
205 gbcore->renderer.outputBuffer = buffer;
206 gbcore->renderer.outputBufferStride = stride;
207}
208
209static void _GBCoreGetPixels(struct mCore* core, const void** buffer, size_t* stride) {
210 struct GBCore* gbcore = (struct GBCore*) core;
211 gbcore->renderer.d.getPixels(&gbcore->renderer.d, stride, buffer);
212}
213
214static void _GBCorePutPixels(struct mCore* core, const void* buffer, size_t stride) {
215 struct GBCore* gbcore = (struct GBCore*) core;
216 gbcore->renderer.d.putPixels(&gbcore->renderer.d, stride, buffer);
217}
218
219static struct blip_t* _GBCoreGetAudioChannel(struct mCore* core, int ch) {
220 struct GB* gb = core->board;
221 switch (ch) {
222 case 0:
223 return gb->audio.left;
224 case 1:
225 return gb->audio.right;
226 default:
227 return NULL;
228 }
229}
230
231static void _GBCoreSetAudioBufferSize(struct mCore* core, size_t samples) {
232 struct GB* gb = core->board;
233 GBAudioResizeBuffer(&gb->audio, samples);
234}
235
236static size_t _GBCoreGetAudioBufferSize(struct mCore* core) {
237 struct GB* gb = core->board;
238 return gb->audio.samples;
239}
240
241static void _GBCoreAddCoreCallbacks(struct mCore* core, struct mCoreCallbacks* coreCallbacks) {
242 struct GB* gb = core->board;
243 *mCoreCallbacksListAppend(&gb->coreCallbacks) = *coreCallbacks;
244}
245
246static void _GBCoreClearCoreCallbacks(struct mCore* core) {
247 struct GB* gb = core->board;
248 mCoreCallbacksListClear(&gb->coreCallbacks);
249}
250
251static void _GBCoreSetAVStream(struct mCore* core, struct mAVStream* stream) {
252 struct GB* gb = core->board;
253 gb->stream = stream;
254 if (stream && stream->videoDimensionsChanged) {
255 stream->videoDimensionsChanged(stream, GB_VIDEO_HORIZONTAL_PIXELS, GB_VIDEO_VERTICAL_PIXELS);
256 }
257}
258
259static bool _GBCoreLoadROM(struct mCore* core, struct VFile* vf) {
260 return GBLoadROM(core->board, vf);
261}
262
263static bool _GBCoreLoadBIOS(struct mCore* core, struct VFile* vf, int type) {
264 UNUSED(type);
265 GBLoadBIOS(core->board, vf);
266 return true;
267}
268
269static bool _GBCoreLoadSave(struct mCore* core, struct VFile* vf) {
270 return GBLoadSave(core->board, vf);
271}
272
273static bool _GBCoreLoadTemporarySave(struct mCore* core, struct VFile* vf) {
274 struct GB* gb = core->board;
275 GBSavedataMask(gb, vf, false);
276 return true; // TODO: Return a real value
277}
278
279static bool _GBCoreLoadPatch(struct mCore* core, struct VFile* vf) {
280 if (!vf) {
281 return false;
282 }
283 struct Patch patch;
284 if (!loadPatch(vf, &patch)) {
285 return false;
286 }
287 GBApplyPatch(core->board, &patch);
288 return true;
289}
290
291static void _GBCoreUnloadROM(struct mCore* core) {
292 struct GBCore* gbcore = (struct GBCore*) core;
293 struct LR35902Core* cpu = core->cpu;
294 if (gbcore->cheatDevice) {
295 LR35902HotplugDetach(cpu, CPU_COMPONENT_CHEAT_DEVICE);
296 cpu->components[CPU_COMPONENT_CHEAT_DEVICE] = NULL;
297 mCheatDeviceDestroy(gbcore->cheatDevice);
298 gbcore->cheatDevice = NULL;
299 }
300 return GBUnloadROM(core->board);
301}
302
303static void _GBCoreChecksum(const struct mCore* core, void* data, enum mCoreChecksumType type) {
304 struct GB* gb = (struct GB*) core->board;
305 switch (type) {
306 case CHECKSUM_CRC32:
307 memcpy(data, &gb->romCrc32, sizeof(gb->romCrc32));
308 break;
309 }
310 return;
311}
312
313static void _GBCoreReset(struct mCore* core) {
314 struct GBCore* gbcore = (struct GBCore*) core;
315 struct GB* gb = (struct GB*) core->board;
316 if (gbcore->renderer.outputBuffer) {
317 GBVideoAssociateRenderer(&gb->video, &gbcore->renderer.d);
318 }
319
320 if (gb->memory.rom) {
321 struct GBCartridgeOverride override;
322 const struct GBCartridge* cart = (const struct GBCartridge*) &gb->memory.rom[0x100];
323 override.headerCrc32 = doCrc32(cart, sizeof(*cart));
324 if (GBOverrideFind(gbcore->overrides, &override)) {
325 GBOverrideApply(gb, &override);
326 }
327 }
328
329#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
330 if (!gb->biosVf && core->opts.useBios) {
331 struct VFile* bios = NULL;
332 bool found = false;
333 if (core->opts.bios) {
334 bios = VFileOpen(core->opts.bios, O_RDONLY);
335 if (bios && GBIsBIOS(bios)) {
336 found = true;
337 } else if (bios) {
338 bios->close(bios);
339 bios = NULL;
340 }
341 }
342 if (!found) {
343 GBDetectModel(gb);
344 const char* configPath = NULL;
345
346 switch (gb->model) {
347 case GB_MODEL_DMG:
348 case GB_MODEL_SGB: // TODO
349 configPath = mCoreConfigGetValue(&core->config, "gb.bios");
350 break;
351 case GB_MODEL_CGB:
352 case GB_MODEL_AGB:
353 configPath = mCoreConfigGetValue(&core->config, "gbc.bios");
354 break;
355 default:
356 break;
357 };
358 if (configPath) {
359 bios = VFileOpen(configPath, O_RDONLY);
360 }
361 if (bios && GBIsBIOS(bios)) {
362 found = true;
363 } else if (bios) {
364 bios->close(bios);
365 bios = NULL;
366 }
367 }
368 if (!found) {
369 char path[PATH_MAX];
370 mCoreConfigDirectory(path, PATH_MAX);
371 switch (gb->model) {
372 case GB_MODEL_DMG:
373 case GB_MODEL_SGB: // TODO
374 strncat(path, PATH_SEP "gb_bios.bin", PATH_MAX - strlen(path));
375 break;
376 case GB_MODEL_CGB:
377 case GB_MODEL_AGB:
378 strncat(path, PATH_SEP "gbc_bios.bin", PATH_MAX - strlen(path));
379 break;
380 default:
381 break;
382 };
383 bios = VFileOpen(path, O_RDONLY);
384 if (bios && GBIsBIOS(bios)) {
385 found = true;
386 } else if (bios) {
387 bios->close(bios);
388 bios = NULL;
389 }
390 }
391 if (bios) {
392 GBLoadBIOS(gb, bios);
393 }
394 }
395#endif
396
397 LR35902Reset(core->cpu);
398}
399
400static void _GBCoreRunFrame(struct mCore* core) {
401 struct GB* gb = core->board;
402 int32_t frameCounter = gb->video.frameCounter;
403 while (gb->video.frameCounter == frameCounter) {
404 LR35902Run(core->cpu);
405 }
406}
407
408static void _GBCoreRunLoop(struct mCore* core) {
409 LR35902Run(core->cpu);
410}
411
412static void _GBCoreStep(struct mCore* core) {
413 struct LR35902Core* cpu = core->cpu;
414 do {
415 LR35902Tick(cpu);
416 } while (cpu->executionState != LR35902_CORE_FETCH);
417}
418
419static size_t _GBCoreStateSize(struct mCore* core) {
420 UNUSED(core);
421 return sizeof(struct GBSerializedState);
422}
423
424static bool _GBCoreLoadState(struct mCore* core, const void* state) {
425 return GBDeserialize(core->board, state);
426}
427
428static bool _GBCoreSaveState(struct mCore* core, void* state) {
429 struct LR35902Core* cpu = core->cpu;
430 while (cpu->executionState != LR35902_CORE_FETCH) {
431 LR35902Tick(cpu);
432 }
433 GBSerialize(core->board, state);
434 return true;
435}
436
437static void _GBCoreSetKeys(struct mCore* core, uint32_t keys) {
438 struct GBCore* gbcore = (struct GBCore*) core;
439 gbcore->keys = keys;
440 GBTestKeypadIRQ(core->board);
441}
442
443static void _GBCoreAddKeys(struct mCore* core, uint32_t keys) {
444 struct GBCore* gbcore = (struct GBCore*) core;
445 gbcore->keys |= keys;
446 GBTestKeypadIRQ(core->board);
447}
448
449static void _GBCoreClearKeys(struct mCore* core, uint32_t keys) {
450 struct GBCore* gbcore = (struct GBCore*) core;
451 gbcore->keys &= ~keys;
452}
453
454static int32_t _GBCoreFrameCounter(const struct mCore* core) {
455 const struct GB* gb = core->board;
456 return gb->video.frameCounter;
457}
458
459static int32_t _GBCoreFrameCycles(const struct mCore* core) {
460 UNUSED(core);
461 return GB_VIDEO_TOTAL_LENGTH;
462}
463
464static int32_t _GBCoreFrequency(const struct mCore* core) {
465 UNUSED(core);
466 // TODO: GB differences
467 return DMG_LR35902_FREQUENCY;
468}
469
470static void _GBCoreGetGameTitle(const struct mCore* core, char* title) {
471 GBGetGameTitle(core->board, title);
472}
473
474static void _GBCoreGetGameCode(const struct mCore* core, char* title) {
475 GBGetGameCode(core->board, title);
476}
477
478static void _GBCoreSetPeripheral(struct mCore* core, int type, void* periph) {
479 struct GB* gb = core->board;
480 switch (type) {
481 case mPERIPH_ROTATION:
482 gb->memory.rotation = periph;
483 break;
484 case mPERIPH_RUMBLE:
485 gb->memory.rumble = periph;
486 break;
487 case mPERIPH_IMAGE_SOURCE:
488 gb->memory.cam = periph;
489 break;
490 default:
491 return;
492 }
493}
494
495static uint32_t _GBCoreBusRead8(struct mCore* core, uint32_t address) {
496 struct LR35902Core* cpu = core->cpu;
497 return cpu->memory.load8(cpu, address);
498}
499
500static uint32_t _GBCoreBusRead16(struct mCore* core, uint32_t address) {
501 struct LR35902Core* cpu = core->cpu;
502 return cpu->memory.load8(cpu, address) | (cpu->memory.load8(cpu, address + 1) << 8);
503}
504
505static uint32_t _GBCoreBusRead32(struct mCore* core, uint32_t address) {
506 struct LR35902Core* cpu = core->cpu;
507 return cpu->memory.load8(cpu, address) | (cpu->memory.load8(cpu, address + 1) << 8) |
508 (cpu->memory.load8(cpu, address + 2) << 16) | (cpu->memory.load8(cpu, address + 3) << 24);
509}
510
511static void _GBCoreBusWrite8(struct mCore* core, uint32_t address, uint8_t value) {
512 struct LR35902Core* cpu = core->cpu;
513 cpu->memory.store8(cpu, address, value);
514}
515
516static void _GBCoreBusWrite16(struct mCore* core, uint32_t address, uint16_t value) {
517 struct LR35902Core* cpu = core->cpu;
518 cpu->memory.store8(cpu, address, value);
519 cpu->memory.store8(cpu, address + 1, value >> 8);
520}
521
522static void _GBCoreBusWrite32(struct mCore* core, uint32_t address, uint32_t value) {
523 struct LR35902Core* cpu = core->cpu;
524 cpu->memory.store8(cpu, address, value);
525 cpu->memory.store8(cpu, address + 1, value >> 8);
526 cpu->memory.store8(cpu, address + 2, value >> 16);
527 cpu->memory.store8(cpu, address + 3, value >> 24);
528}
529
530static uint32_t _GBCoreRawRead8(struct mCore* core, uint32_t address, int segment) {
531 struct LR35902Core* cpu = core->cpu;
532 return GBView8(cpu, address, segment);
533}
534
535static uint32_t _GBCoreRawRead16(struct mCore* core, uint32_t address, int segment) {
536 struct LR35902Core* cpu = core->cpu;
537 return GBView8(cpu, address, segment) | (GBView8(cpu, address + 1, segment) << 8);
538}
539
540static uint32_t _GBCoreRawRead32(struct mCore* core, uint32_t address, int segment) {
541 struct LR35902Core* cpu = core->cpu;
542 return GBView8(cpu, address, segment) | (GBView8(cpu, address + 1, segment) << 8) |
543 (GBView8(cpu, address + 2, segment) << 16) | (GBView8(cpu, address + 3, segment) << 24);
544}
545
546static void _GBCoreRawWrite8(struct mCore* core, uint32_t address, int segment, uint8_t value) {
547 struct LR35902Core* cpu = core->cpu;
548 GBPatch8(cpu, address, value, NULL, segment);
549}
550
551static void _GBCoreRawWrite16(struct mCore* core, uint32_t address, int segment, uint16_t value) {
552 struct LR35902Core* cpu = core->cpu;
553 GBPatch8(cpu, address, value, NULL, segment);
554 GBPatch8(cpu, address + 1, value >> 8, NULL, segment);
555}
556
557static void _GBCoreRawWrite32(struct mCore* core, uint32_t address, int segment, uint32_t value) {
558 struct LR35902Core* cpu = core->cpu;
559 GBPatch8(cpu, address, value, NULL, segment);
560 GBPatch8(cpu, address + 1, value >> 8, NULL, segment);
561 GBPatch8(cpu, address + 2, value >> 16, NULL, segment);
562 GBPatch8(cpu, address + 3, value >> 24, NULL, segment);
563}
564
565size_t _GBListMemoryBlocks(const struct mCore* core, const struct mCoreMemoryBlock** blocks) {
566 const struct GB* gb = core->board;
567 switch (gb->model) {
568 case GB_MODEL_DMG:
569 case GB_MODEL_SGB:
570 default:
571 *blocks = _GBMemoryBlocks;
572 return sizeof(_GBMemoryBlocks) / sizeof(*_GBMemoryBlocks);
573 case GB_MODEL_CGB:
574 case GB_MODEL_AGB:
575 *blocks = _GBCMemoryBlocks;
576 return sizeof(_GBCMemoryBlocks) / sizeof(*_GBCMemoryBlocks);
577 }
578}
579
580void* _GBGetMemoryBlock(struct mCore* core, size_t id, size_t* sizeOut) {
581 struct GB* gb = core->board;
582 bool isCgb = gb->model >= GB_MODEL_CGB;
583 switch (id) {
584 default:
585 return NULL;
586 case GB_REGION_CART_BANK0:
587 *sizeOut = gb->memory.romSize;
588 return gb->memory.rom;
589 case GB_REGION_VRAM:
590 *sizeOut = GB_SIZE_WORKING_RAM_BANK0 * (isCgb ? 1 : 2);
591 return gb->video.vram;
592 case GB_REGION_EXTERNAL_RAM:
593 *sizeOut = gb->sramSize;
594 return gb->memory.sram;
595 case GB_REGION_WORKING_RAM_BANK0:
596 *sizeOut = GB_SIZE_VRAM * (isCgb ? 8 : 2);
597 return gb->memory.wram;
598 case GB_BASE_OAM:
599 *sizeOut = GB_SIZE_OAM;
600 return gb->video.oam.raw;
601 case GB_BASE_HRAM:
602 *sizeOut = GB_SIZE_HRAM;
603 return gb->memory.hram;
604 }
605}
606
607#ifdef USE_DEBUGGERS
608static bool _GBCoreSupportsDebuggerType(struct mCore* core, enum mDebuggerType type) {
609 UNUSED(core);
610 switch (type) {
611 case DEBUGGER_CLI:
612 return true;
613 default:
614 return false;
615 }
616}
617
618static struct mDebuggerPlatform* _GBCoreDebuggerPlatform(struct mCore* core) {
619 struct GBCore* gbcore = (struct GBCore*) core;
620 struct GB* gb = core->board;
621 if (!gbcore->debuggerPlatform) {
622 struct LR35902Debugger* platform = (struct LR35902Debugger*) LR35902DebuggerPlatformCreate();
623 if (gb->model >= GB_MODEL_CGB) {
624 platform->segments = _GBCSegments;
625 } else {
626 platform->segments = _GBSegments;
627 }
628 gbcore->debuggerPlatform = &platform->d;
629 }
630 return gbcore->debuggerPlatform;
631}
632
633static struct CLIDebuggerSystem* _GBCoreCliDebuggerSystem(struct mCore* core) {
634 return GBCLIDebuggerCreate(core);
635}
636
637static void _GBCoreAttachDebugger(struct mCore* core, struct mDebugger* debugger) {
638 struct LR35902Core* cpu = core->cpu;
639 if (core->debugger) {
640 LR35902HotplugDetach(cpu, CPU_COMPONENT_DEBUGGER);
641 }
642 cpu->components[CPU_COMPONENT_DEBUGGER] = &debugger->d;
643 LR35902HotplugAttach(cpu, CPU_COMPONENT_DEBUGGER);
644 core->debugger = debugger;
645}
646
647static void _GBCoreDetachDebugger(struct mCore* core) {
648 struct LR35902Core* cpu = core->cpu;
649 if (core->debugger) {
650 LR35902HotplugDetach(cpu, CPU_COMPONENT_DEBUGGER);
651 }
652 cpu->components[CPU_COMPONENT_DEBUGGER] = NULL;
653 core->debugger = NULL;
654}
655
656static void _GBCoreLoadSymbols(struct mCore* core, struct VFile* vf) {
657 core->symbolTable = mDebuggerSymbolTableCreate();
658#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
659 if (!vf) {
660 vf = mDirectorySetOpenSuffix(&core->dirs, core->dirs.base, ".sym", O_RDONLY);
661 }
662#endif
663 if (!vf) {
664 return;
665 }
666 GBLoadSymbols(core->symbolTable, vf);
667}
668#endif
669
670static struct mCheatDevice* _GBCoreCheatDevice(struct mCore* core) {
671 struct GBCore* gbcore = (struct GBCore*) core;
672 if (!gbcore->cheatDevice) {
673 gbcore->cheatDevice = GBCheatDeviceCreate();
674 ((struct LR35902Core*) core->cpu)->components[CPU_COMPONENT_CHEAT_DEVICE] = &gbcore->cheatDevice->d;
675 LR35902HotplugAttach(core->cpu, CPU_COMPONENT_CHEAT_DEVICE);
676 gbcore->cheatDevice->p = core;
677 }
678 return gbcore->cheatDevice;
679}
680
681static size_t _GBCoreSavedataClone(struct mCore* core, void** sram) {
682 struct GB* gb = core->board;
683 struct VFile* vf = gb->sramVf;
684 if (vf) {
685 *sram = malloc(vf->size(vf));
686 vf->seek(vf, 0, SEEK_SET);
687 return vf->read(vf, *sram, vf->size(vf));
688 }
689 *sram = malloc(gb->sramSize);
690 memcpy(*sram, gb->memory.sram, gb->sramSize);
691 return gb->sramSize;
692}
693
694static bool _GBCoreSavedataRestore(struct mCore* core, const void* sram, size_t size, bool writeback) {
695 struct GB* gb = core->board;
696 if (!writeback) {
697 struct VFile* vf = VFileMemChunk(sram, size);
698 GBSavedataMask(gb, vf, true);
699 return true;
700 }
701 struct VFile* vf = gb->sramVf;
702 if (vf) {
703 vf->seek(vf, 0, SEEK_SET);
704 return vf->write(vf, sram, size) > 0;
705 }
706 if (size > 0x20000) {
707 size = 0x20000;
708 }
709 GBResizeSram(gb, size);
710 memcpy(gb->memory.sram, sram, size);
711 return true;
712}
713
714static size_t _GBCoreListVideoLayers(const struct mCore* core, const struct mCoreChannelInfo** info) {
715 UNUSED(core);
716 *info = _GBVideoLayers;
717 return sizeof(_GBVideoLayers) / sizeof(*_GBVideoLayers);
718}
719
720static size_t _GBCoreListAudioChannels(const struct mCore* core, const struct mCoreChannelInfo** info) {
721 UNUSED(core);
722 *info = _GBAudioChannels;
723 return sizeof(_GBAudioChannels) / sizeof(*_GBAudioChannels);
724}
725
726static void _GBCoreEnableVideoLayer(struct mCore* core, size_t id, bool enable) {
727 struct GB* gb = core->board;
728 switch (id) {
729 case 0:
730 gb->video.renderer->disableBG = !enable;
731 break;
732 case 1:
733 gb->video.renderer->disableOBJ = !enable;
734 break;
735 case 2:
736 gb->video.renderer->disableWIN = !enable;
737 break;
738 default:
739 break;
740 }
741}
742
743static void _GBCoreEnableAudioChannel(struct mCore* core, size_t id, bool enable) {
744 struct GB* gb = core->board;
745 switch (id) {
746 case 0:
747 case 1:
748 case 2:
749 case 3:
750 gb->audio.forceDisableCh[id] = !enable;
751 break;
752 default:
753 break;
754 }
755}
756
757static void _GBCoreStartVideoLog(struct mCore* core, struct mVideoLogContext* context) {
758 struct GBCore* gbcore = (struct GBCore*) core;
759 struct GB* gb = core->board;
760 gbcore->logContext = context;
761
762 int channelId = mVideoLoggerAddChannel(context);
763 gbcore->proxyRenderer.logger = malloc(sizeof(struct mVideoLogger));
764 mVideoLoggerRendererCreate(gbcore->proxyRenderer.logger, false);
765 mVideoLoggerAttachChannel(gbcore->proxyRenderer.logger, context, channelId);
766 gbcore->proxyRenderer.logger->block = false;
767
768 GBVideoProxyRendererCreate(&gbcore->proxyRenderer, &gbcore->renderer.d);
769 GBVideoProxyRendererShim(&gb->video, &gbcore->proxyRenderer);
770}
771
772static void _GBCoreEndVideoLog(struct mCore* core) {
773 struct GBCore* gbcore = (struct GBCore*) core;
774 struct GB* gb = core->board;
775 GBVideoProxyRendererUnshim(&gb->video, &gbcore->proxyRenderer);
776 free(gbcore->proxyRenderer.logger);
777 gbcore->proxyRenderer.logger = NULL;
778}
779
780struct mCore* GBCoreCreate(void) {
781 struct GBCore* gbcore = malloc(sizeof(*gbcore));
782 struct mCore* core = &gbcore->d;
783 memset(&core->opts, 0, sizeof(core->opts));
784 core->cpu = NULL;
785 core->board = NULL;
786 core->debugger = NULL;
787 core->symbolTable = NULL;
788 core->init = _GBCoreInit;
789 core->deinit = _GBCoreDeinit;
790 core->platform = _GBCorePlatform;
791 core->setSync = _GBCoreSetSync;
792 core->loadConfig = _GBCoreLoadConfig;
793 core->desiredVideoDimensions = _GBCoreDesiredVideoDimensions;
794 core->setVideoBuffer = _GBCoreSetVideoBuffer;
795 core->getPixels = _GBCoreGetPixels;
796 core->putPixels = _GBCorePutPixels;
797 core->getAudioChannel = _GBCoreGetAudioChannel;
798 core->setAudioBufferSize = _GBCoreSetAudioBufferSize;
799 core->getAudioBufferSize = _GBCoreGetAudioBufferSize;
800 core->setAVStream = _GBCoreSetAVStream;
801 core->addCoreCallbacks = _GBCoreAddCoreCallbacks;
802 core->clearCoreCallbacks = _GBCoreClearCoreCallbacks;
803 core->isROM = GBIsROM;
804 core->loadROM = _GBCoreLoadROM;
805 core->loadBIOS = _GBCoreLoadBIOS;
806 core->loadSave = _GBCoreLoadSave;
807 core->loadTemporarySave = _GBCoreLoadTemporarySave;
808 core->loadPatch = _GBCoreLoadPatch;
809 core->unloadROM = _GBCoreUnloadROM;
810 core->checksum = _GBCoreChecksum;
811 core->reset = _GBCoreReset;
812 core->runFrame = _GBCoreRunFrame;
813 core->runLoop = _GBCoreRunLoop;
814 core->step = _GBCoreStep;
815 core->stateSize = _GBCoreStateSize;
816 core->loadState = _GBCoreLoadState;
817 core->saveState = _GBCoreSaveState;
818 core->setKeys = _GBCoreSetKeys;
819 core->addKeys = _GBCoreAddKeys;
820 core->clearKeys = _GBCoreClearKeys;
821 core->frameCounter = _GBCoreFrameCounter;
822 core->frameCycles = _GBCoreFrameCycles;
823 core->frequency = _GBCoreFrequency;
824 core->getGameTitle = _GBCoreGetGameTitle;
825 core->getGameCode = _GBCoreGetGameCode;
826 core->setPeripheral = _GBCoreSetPeripheral;
827 core->busRead8 = _GBCoreBusRead8;
828 core->busRead16 = _GBCoreBusRead16;
829 core->busRead32 = _GBCoreBusRead32;
830 core->busWrite8 = _GBCoreBusWrite8;
831 core->busWrite16 = _GBCoreBusWrite16;
832 core->busWrite32 = _GBCoreBusWrite32;
833 core->rawRead8 = _GBCoreRawRead8;
834 core->rawRead16 = _GBCoreRawRead16;
835 core->rawRead32 = _GBCoreRawRead32;
836 core->rawWrite8 = _GBCoreRawWrite8;
837 core->rawWrite16 = _GBCoreRawWrite16;
838 core->rawWrite32 = _GBCoreRawWrite32;
839 core->listMemoryBlocks = _GBListMemoryBlocks;
840 core->getMemoryBlock = _GBGetMemoryBlock;
841#ifdef USE_DEBUGGERS
842 core->supportsDebuggerType = _GBCoreSupportsDebuggerType;
843 core->debuggerPlatform = _GBCoreDebuggerPlatform;
844 core->cliDebuggerSystem = _GBCoreCliDebuggerSystem;
845 core->attachDebugger = _GBCoreAttachDebugger;
846 core->detachDebugger = _GBCoreDetachDebugger;
847 core->loadSymbols = _GBCoreLoadSymbols;
848#endif
849 core->cheatDevice = _GBCoreCheatDevice;
850 core->savedataClone = _GBCoreSavedataClone;
851 core->savedataRestore = _GBCoreSavedataRestore;
852 core->listVideoLayers = _GBCoreListVideoLayers;
853 core->listAudioChannels = _GBCoreListAudioChannels;
854 core->enableVideoLayer = _GBCoreEnableVideoLayer;
855 core->enableAudioChannel = _GBCoreEnableAudioChannel;
856#ifndef MINIMAL_CORE
857 core->startVideoLog = _GBCoreStartVideoLog;
858 core->endVideoLog = _GBCoreEndVideoLog;
859#endif
860 return core;
861}
862
863#ifndef MINIMAL_CORE
864static void _GBVLPStartFrameCallback(void *context) {
865 struct mCore* core = context;
866 struct GBCore* gbcore = (struct GBCore*) core;
867 struct GB* gb = core->board;
868
869 if (!mVideoLoggerRendererRun(gbcore->proxyRenderer.logger, true)) {
870 GBVideoProxyRendererUnshim(&gb->video, &gbcore->proxyRenderer);
871 mVideoLogContextRewind(gbcore->logContext, core);
872 GBVideoProxyRendererShim(&gb->video, &gbcore->proxyRenderer);
873 }
874}
875
876static bool _GBVLPInit(struct mCore* core) {
877 struct GBCore* gbcore = (struct GBCore*) core;
878 if (!_GBCoreInit(core)) {
879 return false;
880 }
881 gbcore->proxyRenderer.logger = malloc(sizeof(struct mVideoLogger));
882 mVideoLoggerRendererCreate(gbcore->proxyRenderer.logger, true);
883 GBVideoProxyRendererCreate(&gbcore->proxyRenderer, NULL);
884 memset(&gbcore->logCallbacks, 0, sizeof(gbcore->logCallbacks));
885 gbcore->logCallbacks.videoFrameStarted = _GBVLPStartFrameCallback;
886 gbcore->logCallbacks.context = core;
887 core->addCoreCallbacks(core, &gbcore->logCallbacks);
888 return true;
889}
890
891static void _GBVLPDeinit(struct mCore* core) {
892 struct GBCore* gbcore = (struct GBCore*) core;
893 if (gbcore->logContext) {
894 mVideoLogContextDestroy(core, gbcore->logContext);
895 }
896 _GBCoreDeinit(core);
897}
898
899static void _GBVLPReset(struct mCore* core) {
900 struct GBCore* gbcore = (struct GBCore*) core;
901 struct GB* gb = (struct GB*) core->board;
902 if (gb->video.renderer == &gbcore->proxyRenderer.d) {
903 GBVideoProxyRendererUnshim(&gb->video, &gbcore->proxyRenderer);
904 } else if (gbcore->renderer.outputBuffer) {
905 struct GBVideoRenderer* renderer = &gbcore->renderer.d;
906 GBVideoAssociateRenderer(&gb->video, renderer);
907 }
908
909 LR35902Reset(core->cpu);
910 mVideoLogContextRewind(gbcore->logContext, core);
911 GBVideoProxyRendererShim(&gb->video, &gbcore->proxyRenderer);
912
913 // Make sure CPU loop never spins
914 GBHalt(gb->cpu);
915 gb->memory.ie = 0;
916 gb->memory.ime = false;
917}
918
919static bool _GBVLPLoadROM(struct mCore* core, struct VFile* vf) {
920 struct GBCore* gbcore = (struct GBCore*) core;
921 gbcore->logContext = mVideoLogContextCreate(NULL);
922 if (!mVideoLogContextLoad(gbcore->logContext, vf)) {
923 mVideoLogContextDestroy(core, gbcore->logContext);
924 gbcore->logContext = NULL;
925 return false;
926 }
927 mVideoLoggerAttachChannel(gbcore->proxyRenderer.logger, gbcore->logContext, 0);
928 return true;
929}
930
931static bool _GBVLPLoadState(struct mCore* core, const void* buffer) {
932 struct GB* gb = (struct GB*) core->board;
933 const struct GBSerializedState* state = buffer;
934
935 gb->timing.root = NULL;
936 gb->model = state->model;
937
938 gb->cpu->pc = GB_BASE_HRAM;
939 gb->cpu->memory.setActiveRegion(gb->cpu, gb->cpu->pc);
940
941 GBVideoDeserialize(&gb->video, state);
942 GBIODeserialize(gb, state);
943 GBAudioReset(&gb->audio);
944
945 // Make sure CPU loop never spins
946 GBHalt(gb->cpu);
947 gb->memory.ie = 0;
948 gb->memory.ime = false;
949
950 return true;
951}
952
953static bool _returnTrue(struct VFile* vf) {
954 UNUSED(vf);
955 return true;
956}
957
958struct mCore* GBVideoLogPlayerCreate(void) {
959 struct mCore* core = GBCoreCreate();
960 core->init = _GBVLPInit;
961 core->deinit = _GBVLPDeinit;
962 core->reset = _GBVLPReset;
963 core->loadROM = _GBVLPLoadROM;
964 core->loadState = _GBVLPLoadState;
965 core->isROM = _returnTrue;
966 return core;
967}
968#else
969struct mCore* GBVideoLogPlayerCreate(void) {
970 return false;
971}
972#endif