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
27const static struct mCoreChannelInfo _GBVideoLayers[] = {
28 { 0, "bg", "Background", NULL },
29 { 1, "obj", "Objects", NULL },
30 { 2, "win", "Window", NULL },
31};
32
33const static struct mCoreChannelInfo _GBAudioChannels[] = {
34 { 0, "ch0", "Channel 0", "Square/Sweep" },
35 { 1, "ch1", "Channel 1", "Square" },
36 { 2, "ch2", "Channel 2", "PCM" },
37 { 3, "ch3", "Channel 3", "Noise" },
38};
39
40const static 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
46const static 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
54const static 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
65const static 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(&core->config, "gb.pal[0]", &color)) {
171 GBVideoSetPalette(&gb->video, 0, color);
172 }
173 if (mCoreConfigGetIntValue(&core->config, "gb.pal[1]", &color)) {
174 GBVideoSetPalette(&gb->video, 1, color);
175 }
176 if (mCoreConfigGetIntValue(&core->config, "gb.pal[2]", &color)) {
177 GBVideoSetPalette(&gb->video, 2, color);
178 }
179 if (mCoreConfigGetIntValue(&core->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 UNUSED(core);
194 *width = GB_VIDEO_HORIZONTAL_PIXELS;
195 *height = GB_VIDEO_VERTICAL_PIXELS;
196}
197
198static void _GBCoreSetVideoBuffer(struct mCore* core, color_t* buffer, size_t stride) {
199 struct GBCore* gbcore = (struct GBCore*) core;
200 gbcore->renderer.outputBuffer = buffer;
201 gbcore->renderer.outputBufferStride = stride;
202}
203
204static void _GBCoreGetPixels(struct mCore* core, const void** buffer, size_t* stride) {
205 struct GBCore* gbcore = (struct GBCore*) core;
206 gbcore->renderer.d.getPixels(&gbcore->renderer.d, stride, buffer);
207}
208
209static void _GBCorePutPixels(struct mCore* core, const void* buffer, size_t stride) {
210 struct GBCore* gbcore = (struct GBCore*) core;
211 gbcore->renderer.d.putPixels(&gbcore->renderer.d, stride, buffer);
212}
213
214static struct blip_t* _GBCoreGetAudioChannel(struct mCore* core, int ch) {
215 struct GB* gb = core->board;
216 switch (ch) {
217 case 0:
218 return gb->audio.left;
219 case 1:
220 return gb->audio.right;
221 default:
222 return NULL;
223 }
224}
225
226static void _GBCoreSetAudioBufferSize(struct mCore* core, size_t samples) {
227 struct GB* gb = core->board;
228 GBAudioResizeBuffer(&gb->audio, samples);
229}
230
231static size_t _GBCoreGetAudioBufferSize(struct mCore* core) {
232 struct GB* gb = core->board;
233 return gb->audio.samples;
234}
235
236static void _GBCoreAddCoreCallbacks(struct mCore* core, struct mCoreCallbacks* coreCallbacks) {
237 struct GB* gb = core->board;
238 *mCoreCallbacksListAppend(&gb->coreCallbacks) = *coreCallbacks;
239}
240
241static void _GBCoreClearCoreCallbacks(struct mCore* core) {
242 struct GB* gb = core->board;
243 mCoreCallbacksListClear(&gb->coreCallbacks);
244}
245
246static void _GBCoreSetAVStream(struct mCore* core, struct mAVStream* stream) {
247 struct GB* gb = core->board;
248 gb->stream = stream;
249 if (stream && stream->videoDimensionsChanged) {
250 stream->videoDimensionsChanged(stream, GB_VIDEO_HORIZONTAL_PIXELS, GB_VIDEO_VERTICAL_PIXELS);
251 }
252}
253
254static bool _GBCoreLoadROM(struct mCore* core, struct VFile* vf) {
255 return GBLoadROM(core->board, vf);
256}
257
258static bool _GBCoreLoadBIOS(struct mCore* core, struct VFile* vf, int type) {
259 UNUSED(type);
260 GBLoadBIOS(core->board, vf);
261 return true;
262}
263
264static bool _GBCoreLoadSave(struct mCore* core, struct VFile* vf) {
265 return GBLoadSave(core->board, vf);
266}
267
268static bool _GBCoreLoadTemporarySave(struct mCore* core, struct VFile* vf) {
269 struct GB* gb = core->board;
270 GBSavedataMask(gb, vf, false);
271 return true; // TODO: Return a real value
272}
273
274static bool _GBCoreLoadPatch(struct mCore* core, struct VFile* vf) {
275 if (!vf) {
276 return false;
277 }
278 struct Patch patch;
279 if (!loadPatch(vf, &patch)) {
280 return false;
281 }
282 GBApplyPatch(core->board, &patch);
283 return true;
284}
285
286static void _GBCoreUnloadROM(struct mCore* core) {
287 struct GBCore* gbcore = (struct GBCore*) core;
288 struct LR35902Core* cpu = core->cpu;
289 if (gbcore->cheatDevice) {
290 LR35902HotplugDetach(cpu, CPU_COMPONENT_CHEAT_DEVICE);
291 cpu->components[CPU_COMPONENT_CHEAT_DEVICE] = NULL;
292 mCheatDeviceDestroy(gbcore->cheatDevice);
293 gbcore->cheatDevice = NULL;
294 }
295 return GBUnloadROM(core->board);
296}
297
298static void _GBCoreChecksum(const struct mCore* core, void* data, enum mCoreChecksumType type) {
299 struct GB* gb = (struct GB*) core->board;
300 switch (type) {
301 case CHECKSUM_CRC32:
302 memcpy(data, &gb->romCrc32, sizeof(gb->romCrc32));
303 break;
304 }
305 return;
306}
307
308static void _GBCoreReset(struct mCore* core) {
309 struct GBCore* gbcore = (struct GBCore*) core;
310 struct GB* gb = (struct GB*) core->board;
311 if (gbcore->renderer.outputBuffer) {
312 GBVideoAssociateRenderer(&gb->video, &gbcore->renderer.d);
313 }
314
315 if (gb->memory.rom) {
316 struct GBCartridgeOverride override;
317 const struct GBCartridge* cart = (const struct GBCartridge*) &gb->memory.rom[0x100];
318 override.headerCrc32 = doCrc32(cart, sizeof(*cart));
319 if (GBOverrideFind(gbcore->overrides, &override)) {
320 GBOverrideApply(gb, &override);
321 }
322 }
323
324#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
325 if (!gb->biosVf && core->opts.useBios) {
326 struct VFile* bios = NULL;
327 bool found = false;
328 if (core->opts.bios) {
329 bios = VFileOpen(core->opts.bios, O_RDONLY);
330 if (bios && GBIsBIOS(bios)) {
331 found = true;
332 } else if (bios) {
333 bios->close(bios);
334 bios = NULL;
335 }
336 }
337 if (!found) {
338 GBDetectModel(gb);
339 const char* configPath = NULL;
340
341 switch (gb->model) {
342 case GB_MODEL_DMG:
343 case GB_MODEL_SGB: // TODO
344 configPath = mCoreConfigGetValue(&core->config, "gb.bios");
345 break;
346 case GB_MODEL_CGB:
347 case GB_MODEL_AGB:
348 configPath = mCoreConfigGetValue(&core->config, "gbc.bios");
349 break;
350 default:
351 break;
352 };
353 if (configPath) {
354 bios = VFileOpen(configPath, O_RDONLY);
355 }
356 if (bios && GBIsBIOS(bios)) {
357 found = true;
358 } else if (bios) {
359 bios->close(bios);
360 bios = NULL;
361 }
362 }
363 if (!found) {
364 char path[PATH_MAX];
365 mCoreConfigDirectory(path, PATH_MAX);
366 switch (gb->model) {
367 case GB_MODEL_DMG:
368 case GB_MODEL_SGB: // TODO
369 strncat(path, PATH_SEP "gb_bios.bin", PATH_MAX - strlen(path));
370 break;
371 case GB_MODEL_CGB:
372 case GB_MODEL_AGB:
373 strncat(path, PATH_SEP "gbc_bios.bin", PATH_MAX - strlen(path));
374 break;
375 default:
376 break;
377 };
378 bios = VFileOpen(path, O_RDONLY);
379 if (bios && GBIsBIOS(bios)) {
380 found = true;
381 } else if (bios) {
382 bios->close(bios);
383 bios = NULL;
384 }
385 }
386 if (bios) {
387 GBLoadBIOS(gb, bios);
388 }
389 }
390#endif
391
392 LR35902Reset(core->cpu);
393}
394
395static void _GBCoreRunFrame(struct mCore* core) {
396 struct GB* gb = core->board;
397 int32_t frameCounter = gb->video.frameCounter;
398 while (gb->video.frameCounter == frameCounter) {
399 LR35902Run(core->cpu);
400 }
401}
402
403static void _GBCoreRunLoop(struct mCore* core) {
404 LR35902Run(core->cpu);
405}
406
407static void _GBCoreStep(struct mCore* core) {
408 struct LR35902Core* cpu = core->cpu;
409 do {
410 LR35902Tick(cpu);
411 } while (cpu->executionState != LR35902_CORE_FETCH);
412}
413
414static size_t _GBCoreStateSize(struct mCore* core) {
415 UNUSED(core);
416 return sizeof(struct GBSerializedState);
417}
418
419static bool _GBCoreLoadState(struct mCore* core, const void* state) {
420 return GBDeserialize(core->board, state);
421}
422
423static bool _GBCoreSaveState(struct mCore* core, void* state) {
424 struct LR35902Core* cpu = core->cpu;
425 while (cpu->executionState != LR35902_CORE_FETCH) {
426 LR35902Tick(cpu);
427 }
428 GBSerialize(core->board, state);
429 return true;
430}
431
432static void _GBCoreSetKeys(struct mCore* core, uint32_t keys) {
433 struct GBCore* gbcore = (struct GBCore*) core;
434 gbcore->keys = keys;
435 GBTestKeypadIRQ(core->board);
436}
437
438static void _GBCoreAddKeys(struct mCore* core, uint32_t keys) {
439 struct GBCore* gbcore = (struct GBCore*) core;
440 gbcore->keys |= keys;
441 GBTestKeypadIRQ(core->board);
442}
443
444static void _GBCoreClearKeys(struct mCore* core, uint32_t keys) {
445 struct GBCore* gbcore = (struct GBCore*) core;
446 gbcore->keys &= ~keys;
447}
448
449static int32_t _GBCoreFrameCounter(const struct mCore* core) {
450 const struct GB* gb = core->board;
451 return gb->video.frameCounter;
452}
453
454static int32_t _GBCoreFrameCycles(const struct mCore* core) {
455 UNUSED(core);
456 return GB_VIDEO_TOTAL_LENGTH;
457}
458
459static int32_t _GBCoreFrequency(const struct mCore* core) {
460 UNUSED(core);
461 // TODO: GB differences
462 return DMG_LR35902_FREQUENCY;
463}
464
465static void _GBCoreGetGameTitle(const struct mCore* core, char* title) {
466 GBGetGameTitle(core->board, title);
467}
468
469static void _GBCoreGetGameCode(const struct mCore* core, char* title) {
470 GBGetGameCode(core->board, title);
471}
472
473static void _GBCoreSetPeripheral(struct mCore* core, int type, void* periph) {
474 struct GB* gb = core->board;
475 switch (type) {
476 case mPERIPH_ROTATION:
477 gb->memory.rotation = periph;
478 break;
479 case mPERIPH_RUMBLE:
480 gb->memory.rumble = periph;
481 break;
482 default:
483 return;
484 }
485}
486
487static uint32_t _GBCoreBusRead8(struct mCore* core, uint32_t address) {
488 struct LR35902Core* cpu = core->cpu;
489 return cpu->memory.load8(cpu, address);
490}
491
492static uint32_t _GBCoreBusRead16(struct mCore* core, uint32_t address) {
493 struct LR35902Core* cpu = core->cpu;
494 return cpu->memory.load8(cpu, address) | (cpu->memory.load8(cpu, address + 1) << 8);
495}
496
497static uint32_t _GBCoreBusRead32(struct mCore* core, uint32_t address) {
498 struct LR35902Core* cpu = core->cpu;
499 return cpu->memory.load8(cpu, address) | (cpu->memory.load8(cpu, address + 1) << 8) |
500 (cpu->memory.load8(cpu, address + 2) << 16) | (cpu->memory.load8(cpu, address + 3) << 24);
501}
502
503static void _GBCoreBusWrite8(struct mCore* core, uint32_t address, uint8_t value) {
504 struct LR35902Core* cpu = core->cpu;
505 cpu->memory.store8(cpu, address, value);
506}
507
508static void _GBCoreBusWrite16(struct mCore* core, uint32_t address, uint16_t value) {
509 struct LR35902Core* cpu = core->cpu;
510 cpu->memory.store8(cpu, address, value);
511 cpu->memory.store8(cpu, address + 1, value >> 8);
512}
513
514static void _GBCoreBusWrite32(struct mCore* core, uint32_t address, uint32_t value) {
515 struct LR35902Core* cpu = core->cpu;
516 cpu->memory.store8(cpu, address, value);
517 cpu->memory.store8(cpu, address + 1, value >> 8);
518 cpu->memory.store8(cpu, address + 2, value >> 16);
519 cpu->memory.store8(cpu, address + 3, value >> 24);
520}
521
522static uint32_t _GBCoreRawRead8(struct mCore* core, uint32_t address, int segment) {
523 struct LR35902Core* cpu = core->cpu;
524 return GBView8(cpu, address, segment);
525}
526
527static uint32_t _GBCoreRawRead16(struct mCore* core, uint32_t address, int segment) {
528 struct LR35902Core* cpu = core->cpu;
529 return GBView8(cpu, address, segment) | (GBView8(cpu, address + 1, segment) << 8);
530}
531
532static uint32_t _GBCoreRawRead32(struct mCore* core, uint32_t address, int segment) {
533 struct LR35902Core* cpu = core->cpu;
534 return GBView8(cpu, address, segment) | (GBView8(cpu, address + 1, segment) << 8) |
535 (GBView8(cpu, address + 2, segment) << 16) | (GBView8(cpu, address + 3, segment) << 24);
536}
537
538static void _GBCoreRawWrite8(struct mCore* core, uint32_t address, int segment, uint8_t value) {
539 struct LR35902Core* cpu = core->cpu;
540 GBPatch8(cpu, address, value, NULL, segment);
541}
542
543static void _GBCoreRawWrite16(struct mCore* core, uint32_t address, int segment, uint16_t value) {
544 struct LR35902Core* cpu = core->cpu;
545 GBPatch8(cpu, address, value, NULL, segment);
546 GBPatch8(cpu, address + 1, value >> 8, NULL, segment);
547}
548
549static void _GBCoreRawWrite32(struct mCore* core, uint32_t address, int segment, uint32_t value) {
550 struct LR35902Core* cpu = core->cpu;
551 GBPatch8(cpu, address, value, NULL, segment);
552 GBPatch8(cpu, address + 1, value >> 8, NULL, segment);
553 GBPatch8(cpu, address + 2, value >> 16, NULL, segment);
554 GBPatch8(cpu, address + 3, value >> 24, NULL, segment);
555}
556
557size_t _GBListMemoryBlocks(const struct mCore* core, const struct mCoreMemoryBlock** blocks) {
558 const struct GB* gb = core->board;
559 switch (gb->model) {
560 case GB_MODEL_DMG:
561 case GB_MODEL_SGB:
562 default:
563 *blocks = _GBMemoryBlocks;
564 return sizeof(_GBMemoryBlocks) / sizeof(*_GBMemoryBlocks);
565 case GB_MODEL_CGB:
566 case GB_MODEL_AGB:
567 *blocks = _GBCMemoryBlocks;
568 return sizeof(_GBCMemoryBlocks) / sizeof(*_GBCMemoryBlocks);
569 }
570}
571
572void* _GBGetMemoryBlock(struct mCore* core, size_t id, size_t* sizeOut) {
573 struct GB* gb = core->board;
574 bool isCgb = gb->model >= GB_MODEL_CGB;
575 switch (id) {
576 default:
577 return NULL;
578 case GB_REGION_CART_BANK0:
579 *sizeOut = gb->memory.romSize;
580 return gb->memory.rom;
581 case GB_REGION_VRAM:
582 *sizeOut = GB_SIZE_WORKING_RAM_BANK0 * (isCgb ? 1 : 2);
583 return gb->video.vram;
584 case GB_REGION_EXTERNAL_RAM:
585 *sizeOut = gb->sramSize;
586 return gb->memory.sram;
587 case GB_REGION_WORKING_RAM_BANK0:
588 *sizeOut = GB_SIZE_VRAM * (isCgb ? 8 : 2);
589 return gb->memory.wram;
590 case GB_BASE_OAM:
591 *sizeOut = GB_SIZE_OAM;
592 return gb->video.oam.raw;
593 case GB_BASE_HRAM:
594 *sizeOut = GB_SIZE_HRAM;
595 return gb->memory.hram;
596 }
597}
598
599#ifdef USE_DEBUGGERS
600static bool _GBCoreSupportsDebuggerType(struct mCore* core, enum mDebuggerType type) {
601 UNUSED(core);
602 switch (type) {
603 case DEBUGGER_CLI:
604 return true;
605 default:
606 return false;
607 }
608}
609
610static struct mDebuggerPlatform* _GBCoreDebuggerPlatform(struct mCore* core) {
611 struct GBCore* gbcore = (struct GBCore*) core;
612 struct GB* gb = core->board;
613 if (!gbcore->debuggerPlatform) {
614 struct LR35902Debugger* platform = (struct LR35902Debugger*) LR35902DebuggerPlatformCreate();
615 if (gb->model >= GB_MODEL_CGB) {
616 platform->segments = _GBCSegments;
617 } else {
618 platform->segments = _GBSegments;
619 }
620 gbcore->debuggerPlatform = &platform->d;
621 }
622 return gbcore->debuggerPlatform;
623}
624
625static struct CLIDebuggerSystem* _GBCoreCliDebuggerSystem(struct mCore* core) {
626 return GBCLIDebuggerCreate(core);
627}
628
629static void _GBCoreAttachDebugger(struct mCore* core, struct mDebugger* debugger) {
630 struct LR35902Core* cpu = core->cpu;
631 if (core->debugger) {
632 LR35902HotplugDetach(cpu, CPU_COMPONENT_DEBUGGER);
633 }
634 cpu->components[CPU_COMPONENT_DEBUGGER] = &debugger->d;
635 LR35902HotplugAttach(cpu, CPU_COMPONENT_DEBUGGER);
636 core->debugger = debugger;
637}
638
639static void _GBCoreDetachDebugger(struct mCore* core) {
640 struct LR35902Core* cpu = core->cpu;
641 if (core->debugger) {
642 LR35902HotplugDetach(cpu, CPU_COMPONENT_DEBUGGER);
643 }
644 cpu->components[CPU_COMPONENT_DEBUGGER] = NULL;
645 core->debugger = NULL;
646}
647
648static void _GBCoreLoadSymbols(struct mCore* core, struct VFile* vf) {
649 core->symbolTable = mDebuggerSymbolTableCreate();
650#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
651 if (!vf) {
652 vf = mDirectorySetOpenSuffix(&core->dirs, core->dirs.base, ".sym", O_RDONLY);
653 }
654#endif
655 if (!vf) {
656 return;
657 }
658 GBLoadSymbols(core->symbolTable, vf);
659}
660#endif
661
662static struct mCheatDevice* _GBCoreCheatDevice(struct mCore* core) {
663 struct GBCore* gbcore = (struct GBCore*) core;
664 if (!gbcore->cheatDevice) {
665 gbcore->cheatDevice = GBCheatDeviceCreate();
666 ((struct LR35902Core*) core->cpu)->components[CPU_COMPONENT_CHEAT_DEVICE] = &gbcore->cheatDevice->d;
667 LR35902HotplugAttach(core->cpu, CPU_COMPONENT_CHEAT_DEVICE);
668 gbcore->cheatDevice->p = core;
669 }
670 return gbcore->cheatDevice;
671}
672
673static size_t _GBCoreSavedataClone(struct mCore* core, void** sram) {
674 struct GB* gb = core->board;
675 struct VFile* vf = gb->sramVf;
676 if (vf) {
677 *sram = malloc(vf->size(vf));
678 vf->seek(vf, 0, SEEK_SET);
679 return vf->read(vf, *sram, vf->size(vf));
680 }
681 *sram = malloc(gb->sramSize);
682 memcpy(*sram, gb->memory.sram, gb->sramSize);
683 return gb->sramSize;
684}
685
686static bool _GBCoreSavedataRestore(struct mCore* core, const void* sram, size_t size, bool writeback) {
687 struct GB* gb = core->board;
688 if (!writeback) {
689 struct VFile* vf = VFileMemChunk(sram, size);
690 GBSavedataMask(gb, vf, true);
691 return true;
692 }
693 struct VFile* vf = gb->sramVf;
694 if (vf) {
695 vf->seek(vf, 0, SEEK_SET);
696 return vf->write(vf, sram, size) > 0;
697 }
698 if (size > 0x20000) {
699 size = 0x20000;
700 }
701 GBResizeSram(gb, size);
702 memcpy(gb->memory.sram, sram, size);
703 return true;
704}
705
706static size_t _GBCoreListVideoLayers(const struct mCore* core, const struct mCoreChannelInfo** info) {
707 UNUSED(core);
708 *info = _GBVideoLayers;
709 return sizeof(_GBVideoLayers) / sizeof(*_GBVideoLayers);
710}
711
712static size_t _GBCoreListAudioChannels(const struct mCore* core, const struct mCoreChannelInfo** info) {
713 UNUSED(core);
714 *info = _GBAudioChannels;
715 return sizeof(_GBAudioChannels) / sizeof(*_GBAudioChannels);
716}
717
718static void _GBCoreEnableVideoLayer(struct mCore* core, size_t id, bool enable) {
719 struct GB* gb = core->board;
720 switch (id) {
721 case 0:
722 gb->video.renderer->disableBG = !enable;
723 break;
724 case 1:
725 gb->video.renderer->disableOBJ = !enable;
726 break;
727 case 2:
728 gb->video.renderer->disableWIN = !enable;
729 break;
730 default:
731 break;
732 }
733}
734
735static void _GBCoreEnableAudioChannel(struct mCore* core, size_t id, bool enable) {
736 struct GB* gb = core->board;
737 switch (id) {
738 case 0:
739 case 1:
740 case 2:
741 case 3:
742 gb->audio.forceDisableCh[id] = !enable;
743 break;
744 default:
745 break;
746 }
747}
748
749static void _GBCoreStartVideoLog(struct mCore* core, struct mVideoLogContext* context) {
750 struct GBCore* gbcore = (struct GBCore*) core;
751 struct GB* gb = core->board;
752 gbcore->logContext = context;
753
754 int channelId = mVideoLoggerAddChannel(context);
755 gbcore->proxyRenderer.logger = malloc(sizeof(struct mVideoLogger));
756 mVideoLoggerRendererCreate(gbcore->proxyRenderer.logger, false);
757 mVideoLoggerAttachChannel(gbcore->proxyRenderer.logger, context, channelId);
758 gbcore->proxyRenderer.logger->block = false;
759
760 GBVideoProxyRendererCreate(&gbcore->proxyRenderer, &gbcore->renderer.d);
761 GBVideoProxyRendererShim(&gb->video, &gbcore->proxyRenderer);
762}
763
764static void _GBCoreEndVideoLog(struct mCore* core) {
765 struct GBCore* gbcore = (struct GBCore*) core;
766 struct GB* gb = core->board;
767 GBVideoProxyRendererUnshim(&gb->video, &gbcore->proxyRenderer);
768 free(gbcore->proxyRenderer.logger);
769 gbcore->proxyRenderer.logger = NULL;
770}
771
772struct mCore* GBCoreCreate(void) {
773 struct GBCore* gbcore = malloc(sizeof(*gbcore));
774 struct mCore* core = &gbcore->d;
775 memset(&core->opts, 0, sizeof(core->opts));
776 core->cpu = NULL;
777 core->board = NULL;
778 core->debugger = NULL;
779 core->symbolTable = NULL;
780 core->init = _GBCoreInit;
781 core->deinit = _GBCoreDeinit;
782 core->platform = _GBCorePlatform;
783 core->setSync = _GBCoreSetSync;
784 core->loadConfig = _GBCoreLoadConfig;
785 core->desiredVideoDimensions = _GBCoreDesiredVideoDimensions;
786 core->setVideoBuffer = _GBCoreSetVideoBuffer;
787 core->getPixels = _GBCoreGetPixels;
788 core->putPixels = _GBCorePutPixels;
789 core->getAudioChannel = _GBCoreGetAudioChannel;
790 core->setAudioBufferSize = _GBCoreSetAudioBufferSize;
791 core->getAudioBufferSize = _GBCoreGetAudioBufferSize;
792 core->setAVStream = _GBCoreSetAVStream;
793 core->addCoreCallbacks = _GBCoreAddCoreCallbacks;
794 core->clearCoreCallbacks = _GBCoreClearCoreCallbacks;
795 core->isROM = GBIsROM;
796 core->loadROM = _GBCoreLoadROM;
797 core->loadBIOS = _GBCoreLoadBIOS;
798 core->loadSave = _GBCoreLoadSave;
799 core->loadTemporarySave = _GBCoreLoadTemporarySave;
800 core->loadPatch = _GBCoreLoadPatch;
801 core->unloadROM = _GBCoreUnloadROM;
802 core->checksum = _GBCoreChecksum;
803 core->reset = _GBCoreReset;
804 core->runFrame = _GBCoreRunFrame;
805 core->runLoop = _GBCoreRunLoop;
806 core->step = _GBCoreStep;
807 core->stateSize = _GBCoreStateSize;
808 core->loadState = _GBCoreLoadState;
809 core->saveState = _GBCoreSaveState;
810 core->setKeys = _GBCoreSetKeys;
811 core->addKeys = _GBCoreAddKeys;
812 core->clearKeys = _GBCoreClearKeys;
813 core->frameCounter = _GBCoreFrameCounter;
814 core->frameCycles = _GBCoreFrameCycles;
815 core->frequency = _GBCoreFrequency;
816 core->getGameTitle = _GBCoreGetGameTitle;
817 core->getGameCode = _GBCoreGetGameCode;
818 core->setPeripheral = _GBCoreSetPeripheral;
819 core->busRead8 = _GBCoreBusRead8;
820 core->busRead16 = _GBCoreBusRead16;
821 core->busRead32 = _GBCoreBusRead32;
822 core->busWrite8 = _GBCoreBusWrite8;
823 core->busWrite16 = _GBCoreBusWrite16;
824 core->busWrite32 = _GBCoreBusWrite32;
825 core->rawRead8 = _GBCoreRawRead8;
826 core->rawRead16 = _GBCoreRawRead16;
827 core->rawRead32 = _GBCoreRawRead32;
828 core->rawWrite8 = _GBCoreRawWrite8;
829 core->rawWrite16 = _GBCoreRawWrite16;
830 core->rawWrite32 = _GBCoreRawWrite32;
831 core->listMemoryBlocks = _GBListMemoryBlocks;
832 core->getMemoryBlock = _GBGetMemoryBlock;
833#ifdef USE_DEBUGGERS
834 core->supportsDebuggerType = _GBCoreSupportsDebuggerType;
835 core->debuggerPlatform = _GBCoreDebuggerPlatform;
836 core->cliDebuggerSystem = _GBCoreCliDebuggerSystem;
837 core->attachDebugger = _GBCoreAttachDebugger;
838 core->detachDebugger = _GBCoreDetachDebugger;
839 core->loadSymbols = _GBCoreLoadSymbols;
840#endif
841 core->cheatDevice = _GBCoreCheatDevice;
842 core->savedataClone = _GBCoreSavedataClone;
843 core->savedataRestore = _GBCoreSavedataRestore;
844 core->listVideoLayers = _GBCoreListVideoLayers;
845 core->listAudioChannels = _GBCoreListAudioChannels;
846 core->enableVideoLayer = _GBCoreEnableVideoLayer;
847 core->enableAudioChannel = _GBCoreEnableAudioChannel;
848#ifndef MINIMAL_CORE
849 core->startVideoLog = _GBCoreStartVideoLog;
850 core->endVideoLog = _GBCoreEndVideoLog;
851#endif
852 return core;
853}
854
855#ifndef MINIMAL_CORE
856static void _GBVLPStartFrameCallback(void *context) {
857 struct mCore* core = context;
858 struct GBCore* gbcore = (struct GBCore*) core;
859 struct GB* gb = core->board;
860
861 if (!mVideoLoggerRendererRun(gbcore->proxyRenderer.logger, true)) {
862 GBVideoProxyRendererUnshim(&gb->video, &gbcore->proxyRenderer);
863 mVideoLogContextRewind(gbcore->logContext, core);
864 GBVideoProxyRendererShim(&gb->video, &gbcore->proxyRenderer);
865 }
866}
867
868static bool _GBVLPInit(struct mCore* core) {
869 struct GBCore* gbcore = (struct GBCore*) core;
870 if (!_GBCoreInit(core)) {
871 return false;
872 }
873 gbcore->proxyRenderer.logger = malloc(sizeof(struct mVideoLogger));
874 mVideoLoggerRendererCreate(gbcore->proxyRenderer.logger, true);
875 GBVideoProxyRendererCreate(&gbcore->proxyRenderer, NULL);
876 memset(&gbcore->logCallbacks, 0, sizeof(gbcore->logCallbacks));
877 gbcore->logCallbacks.videoFrameStarted = _GBVLPStartFrameCallback;
878 gbcore->logCallbacks.context = core;
879 core->addCoreCallbacks(core, &gbcore->logCallbacks);
880 return true;
881}
882
883static void _GBVLPDeinit(struct mCore* core) {
884 struct GBCore* gbcore = (struct GBCore*) core;
885 if (gbcore->logContext) {
886 mVideoLogContextDestroy(core, gbcore->logContext);
887 }
888 _GBCoreDeinit(core);
889}
890
891static void _GBVLPReset(struct mCore* core) {
892 struct GBCore* gbcore = (struct GBCore*) core;
893 struct GB* gb = (struct GB*) core->board;
894 if (gb->video.renderer == &gbcore->proxyRenderer.d) {
895 GBVideoProxyRendererUnshim(&gb->video, &gbcore->proxyRenderer);
896 } else if (gbcore->renderer.outputBuffer) {
897 struct GBVideoRenderer* renderer = &gbcore->renderer.d;
898 GBVideoAssociateRenderer(&gb->video, renderer);
899 }
900
901 LR35902Reset(core->cpu);
902 mVideoLogContextRewind(gbcore->logContext, core);
903 GBVideoProxyRendererShim(&gb->video, &gbcore->proxyRenderer);
904
905 // Make sure CPU loop never spins
906 GBHalt(gb->cpu);
907 gb->memory.ie = 0;
908 gb->memory.ime = false;
909}
910
911static bool _GBVLPLoadROM(struct mCore* core, struct VFile* vf) {
912 struct GBCore* gbcore = (struct GBCore*) core;
913 gbcore->logContext = mVideoLogContextCreate(NULL);
914 if (!mVideoLogContextLoad(gbcore->logContext, vf)) {
915 mVideoLogContextDestroy(core, gbcore->logContext);
916 gbcore->logContext = NULL;
917 return false;
918 }
919 mVideoLoggerAttachChannel(gbcore->proxyRenderer.logger, gbcore->logContext, 0);
920 return true;
921}
922
923static bool _GBVLPLoadState(struct mCore* core, const void* buffer) {
924 struct GB* gb = (struct GB*) core->board;
925 const struct GBSerializedState* state = buffer;
926
927 gb->timing.root = NULL;
928 gb->model = state->model;
929
930 gb->cpu->pc = GB_BASE_HRAM;
931 gb->cpu->memory.setActiveRegion(gb->cpu, gb->cpu->pc);
932
933 GBVideoDeserialize(&gb->video, state);
934 GBIODeserialize(gb, state);
935 GBAudioReset(&gb->audio);
936
937 // Make sure CPU loop never spins
938 GBHalt(gb->cpu);
939 gb->memory.ie = 0;
940 gb->memory.ime = false;
941
942 return true;
943}
944
945static bool _returnTrue(struct VFile* vf) {
946 UNUSED(vf);
947 return true;
948}
949
950struct mCore* GBVideoLogPlayerCreate(void) {
951 struct mCore* core = GBCoreCreate();
952 core->init = _GBVLPInit;
953 core->deinit = _GBVLPDeinit;
954 core->reset = _GBVLPReset;
955 core->loadROM = _GBVLPLoadROM;
956 core->loadState = _GBVLPLoadState;
957 core->isROM = _returnTrue;
958 return core;
959}
960#else
961struct mCore* GBVideoLogPlayerCreate(void) {
962 return false;
963}
964#endif