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, "bgwin", "Window", NULL },
30 { 2, "obj", "Objects", 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, "sgb.bios");
185 mCoreConfigCopyValue(&core->config, config, "gbc.bios");
186 mCoreConfigCopyValue(&core->config, config, "gb.model");
187 mCoreConfigCopyValue(&core->config, config, "sgb.model");
188 mCoreConfigCopyValue(&core->config, config, "cgb.model");
189 mCoreConfigCopyValue(&core->config, config, "sgb.borders");
190
191#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
192 struct GBCore* gbcore = (struct GBCore*) core;
193 gbcore->overrides = mCoreConfigGetOverridesConst(config);
194#endif
195}
196
197static void _GBCoreDesiredVideoDimensions(struct mCore* core, unsigned* width, unsigned* height) {
198 struct GB* gb = core->board;
199 if (gb && (gb->model != GB_MODEL_SGB || !gb->video.sgbBorders)) {
200 *width = GB_VIDEO_HORIZONTAL_PIXELS;
201 *height = GB_VIDEO_VERTICAL_PIXELS;
202 } else {
203 *width = 256;
204 *height = 224;
205 }
206}
207
208static void _GBCoreSetVideoBuffer(struct mCore* core, color_t* buffer, size_t stride) {
209 struct GBCore* gbcore = (struct GBCore*) core;
210 gbcore->renderer.outputBuffer = buffer;
211 gbcore->renderer.outputBufferStride = stride;
212}
213
214static void _GBCoreGetPixels(struct mCore* core, const void** buffer, size_t* stride) {
215 struct GBCore* gbcore = (struct GBCore*) core;
216 gbcore->renderer.d.getPixels(&gbcore->renderer.d, stride, buffer);
217}
218
219static void _GBCorePutPixels(struct mCore* core, const void* buffer, size_t stride) {
220 struct GBCore* gbcore = (struct GBCore*) core;
221 gbcore->renderer.d.putPixels(&gbcore->renderer.d, stride, buffer);
222}
223
224static struct blip_t* _GBCoreGetAudioChannel(struct mCore* core, int ch) {
225 struct GB* gb = core->board;
226 switch (ch) {
227 case 0:
228 return gb->audio.left;
229 case 1:
230 return gb->audio.right;
231 default:
232 return NULL;
233 }
234}
235
236static void _GBCoreSetAudioBufferSize(struct mCore* core, size_t samples) {
237 struct GB* gb = core->board;
238 GBAudioResizeBuffer(&gb->audio, samples);
239}
240
241static size_t _GBCoreGetAudioBufferSize(struct mCore* core) {
242 struct GB* gb = core->board;
243 return gb->audio.samples;
244}
245
246static void _GBCoreAddCoreCallbacks(struct mCore* core, struct mCoreCallbacks* coreCallbacks) {
247 struct GB* gb = core->board;
248 *mCoreCallbacksListAppend(&gb->coreCallbacks) = *coreCallbacks;
249}
250
251static void _GBCoreClearCoreCallbacks(struct mCore* core) {
252 struct GB* gb = core->board;
253 mCoreCallbacksListClear(&gb->coreCallbacks);
254}
255
256static void _GBCoreSetAVStream(struct mCore* core, struct mAVStream* stream) {
257 struct GB* gb = core->board;
258 gb->stream = stream;
259 if (stream && stream->videoDimensionsChanged) {
260 stream->videoDimensionsChanged(stream, GB_VIDEO_HORIZONTAL_PIXELS, GB_VIDEO_VERTICAL_PIXELS);
261 }
262}
263
264static bool _GBCoreLoadROM(struct mCore* core, struct VFile* vf) {
265 return GBLoadROM(core->board, vf);
266}
267
268static bool _GBCoreLoadBIOS(struct mCore* core, struct VFile* vf, int type) {
269 UNUSED(type);
270 GBLoadBIOS(core->board, vf);
271 return true;
272}
273
274static bool _GBCoreLoadSave(struct mCore* core, struct VFile* vf) {
275 return GBLoadSave(core->board, vf);
276}
277
278static bool _GBCoreLoadTemporarySave(struct mCore* core, struct VFile* vf) {
279 struct GB* gb = core->board;
280 GBSavedataMask(gb, vf, false);
281 return true; // TODO: Return a real value
282}
283
284static bool _GBCoreLoadPatch(struct mCore* core, struct VFile* vf) {
285 if (!vf) {
286 return false;
287 }
288 struct Patch patch;
289 if (!loadPatch(vf, &patch)) {
290 return false;
291 }
292 GBApplyPatch(core->board, &patch);
293 return true;
294}
295
296static void _GBCoreUnloadROM(struct mCore* core) {
297 struct GBCore* gbcore = (struct GBCore*) core;
298 struct LR35902Core* cpu = core->cpu;
299 if (gbcore->cheatDevice) {
300 LR35902HotplugDetach(cpu, CPU_COMPONENT_CHEAT_DEVICE);
301 cpu->components[CPU_COMPONENT_CHEAT_DEVICE] = NULL;
302 mCheatDeviceDestroy(gbcore->cheatDevice);
303 gbcore->cheatDevice = NULL;
304 }
305 return GBUnloadROM(core->board);
306}
307
308static void _GBCoreChecksum(const struct mCore* core, void* data, enum mCoreChecksumType type) {
309 struct GB* gb = (struct GB*) core->board;
310 switch (type) {
311 case CHECKSUM_CRC32:
312 memcpy(data, &gb->romCrc32, sizeof(gb->romCrc32));
313 break;
314 }
315 return;
316}
317
318static void _GBCoreReset(struct mCore* core) {
319 struct GBCore* gbcore = (struct GBCore*) core;
320 struct GB* gb = (struct GB*) core->board;
321 if (gbcore->renderer.outputBuffer) {
322 GBVideoAssociateRenderer(&gb->video, &gbcore->renderer.d);
323 }
324
325 if (gb->memory.rom) {
326 struct GBCartridgeOverride override;
327 const struct GBCartridge* cart = (const struct GBCartridge*) &gb->memory.rom[0x100];
328 override.headerCrc32 = doCrc32(cart, sizeof(*cart));
329 if (GBOverrideFind(gbcore->overrides, &override)) {
330 GBOverrideApply(gb, &override);
331 }
332 }
333
334 const char* modelGB = mCoreConfigGetValue(&core->config, "gb.model");
335 const char* modelCGB = mCoreConfigGetValue(&core->config, "cgb.model");
336 const char* modelSGB = mCoreConfigGetValue(&core->config, "sgb.model");
337 if (modelGB || modelCGB || modelSGB) {
338 GBDetectModel(gb);
339 if (gb->model == GB_MODEL_DMG && modelGB) {
340 gb->model = GBNameToModel(modelGB);
341 } else if (gb->model == GB_MODEL_CGB && modelCGB) {
342 gb->model = GBNameToModel(modelCGB);
343 } else if (gb->model == GB_MODEL_SGB && modelSGB) {
344 gb->model = GBNameToModel(modelSGB);
345 }
346 }
347
348 int fakeBool;
349 if (mCoreConfigGetIntValue(&core->config, "sgb.borders", &fakeBool)) {
350 gb->video.sgbBorders = fakeBool;
351 }
352
353#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
354 if (!gb->biosVf && core->opts.useBios) {
355 struct VFile* bios = NULL;
356 bool found = false;
357 if (core->opts.bios) {
358 bios = VFileOpen(core->opts.bios, O_RDONLY);
359 if (bios && GBIsBIOS(bios)) {
360 found = true;
361 } else if (bios) {
362 bios->close(bios);
363 bios = NULL;
364 }
365 }
366 if (!found) {
367 GBDetectModel(gb);
368 const char* configPath = NULL;
369
370 switch (gb->model) {
371 case GB_MODEL_DMG:
372 case GB_MODEL_MGB: // TODO
373 configPath = mCoreConfigGetValue(&core->config, "gb.bios");
374 break;
375 case GB_MODEL_SGB:
376 case GB_MODEL_SGB2: // TODO
377 configPath = mCoreConfigGetValue(&core->config, "sgb.bios");
378 break;
379 case GB_MODEL_CGB:
380 case GB_MODEL_AGB:
381 configPath = mCoreConfigGetValue(&core->config, "gbc.bios");
382 break;
383 default:
384 break;
385 };
386 if (configPath) {
387 bios = VFileOpen(configPath, O_RDONLY);
388 }
389 if (bios && GBIsBIOS(bios)) {
390 found = true;
391 } else if (bios) {
392 bios->close(bios);
393 bios = NULL;
394 }
395 }
396 if (!found) {
397 char path[PATH_MAX];
398 mCoreConfigDirectory(path, PATH_MAX);
399 switch (gb->model) {
400 case GB_MODEL_DMG:
401 case GB_MODEL_MGB: // TODO
402 strncat(path, PATH_SEP "gb_bios.bin", PATH_MAX - strlen(path));
403 break;
404 case GB_MODEL_SGB:
405 case GB_MODEL_SGB2: // TODO
406 strncat(path, PATH_SEP "sgb_bios.bin", PATH_MAX - strlen(path));
407 break;
408 case GB_MODEL_CGB:
409 case GB_MODEL_AGB:
410 strncat(path, PATH_SEP "gbc_bios.bin", PATH_MAX - strlen(path));
411 break;
412 default:
413 break;
414 };
415 bios = VFileOpen(path, O_RDONLY);
416 if (bios && GBIsBIOS(bios)) {
417 found = true;
418 } else if (bios) {
419 bios->close(bios);
420 bios = NULL;
421 }
422 }
423 if (bios) {
424 GBLoadBIOS(gb, bios);
425 }
426 }
427#endif
428
429 LR35902Reset(core->cpu);
430}
431
432static void _GBCoreRunFrame(struct mCore* core) {
433 struct GB* gb = core->board;
434 int32_t frameCounter = gb->video.frameCounter;
435 while (gb->video.frameCounter == frameCounter) {
436 LR35902Run(core->cpu);
437 }
438}
439
440static void _GBCoreRunLoop(struct mCore* core) {
441 LR35902Run(core->cpu);
442}
443
444static void _GBCoreStep(struct mCore* core) {
445 struct LR35902Core* cpu = core->cpu;
446 do {
447 LR35902Tick(cpu);
448 } while (cpu->executionState != LR35902_CORE_FETCH);
449}
450
451static size_t _GBCoreStateSize(struct mCore* core) {
452 UNUSED(core);
453 return sizeof(struct GBSerializedState);
454}
455
456static bool _GBCoreLoadState(struct mCore* core, const void* state) {
457 return GBDeserialize(core->board, state);
458}
459
460static bool _GBCoreSaveState(struct mCore* core, void* state) {
461 struct LR35902Core* cpu = core->cpu;
462 while (cpu->executionState != LR35902_CORE_FETCH) {
463 LR35902Tick(cpu);
464 }
465 GBSerialize(core->board, state);
466 return true;
467}
468
469static void _GBCoreSetKeys(struct mCore* core, uint32_t keys) {
470 struct GBCore* gbcore = (struct GBCore*) core;
471 gbcore->keys = keys;
472 GBTestKeypadIRQ(core->board);
473}
474
475static void _GBCoreAddKeys(struct mCore* core, uint32_t keys) {
476 struct GBCore* gbcore = (struct GBCore*) core;
477 gbcore->keys |= keys;
478 GBTestKeypadIRQ(core->board);
479}
480
481static void _GBCoreClearKeys(struct mCore* core, uint32_t keys) {
482 struct GBCore* gbcore = (struct GBCore*) core;
483 gbcore->keys &= ~keys;
484}
485
486static int32_t _GBCoreFrameCounter(const struct mCore* core) {
487 const struct GB* gb = core->board;
488 return gb->video.frameCounter;
489}
490
491static int32_t _GBCoreFrameCycles(const struct mCore* core) {
492 UNUSED(core);
493 return GB_VIDEO_TOTAL_LENGTH;
494}
495
496static int32_t _GBCoreFrequency(const struct mCore* core) {
497 UNUSED(core);
498 // TODO: GB differences
499 return DMG_LR35902_FREQUENCY;
500}
501
502static void _GBCoreGetGameTitle(const struct mCore* core, char* title) {
503 GBGetGameTitle(core->board, title);
504}
505
506static void _GBCoreGetGameCode(const struct mCore* core, char* title) {
507 GBGetGameCode(core->board, title);
508}
509
510static void _GBCoreSetPeripheral(struct mCore* core, int type, void* periph) {
511 struct GB* gb = core->board;
512 switch (type) {
513 case mPERIPH_ROTATION:
514 gb->memory.rotation = periph;
515 break;
516 case mPERIPH_RUMBLE:
517 gb->memory.rumble = periph;
518 break;
519 case mPERIPH_IMAGE_SOURCE:
520 gb->memory.cam = periph;
521 break;
522 default:
523 return;
524 }
525}
526
527static uint32_t _GBCoreBusRead8(struct mCore* core, uint32_t address) {
528 struct LR35902Core* cpu = core->cpu;
529 return cpu->memory.load8(cpu, address);
530}
531
532static uint32_t _GBCoreBusRead16(struct mCore* core, uint32_t address) {
533 struct LR35902Core* cpu = core->cpu;
534 return cpu->memory.load8(cpu, address) | (cpu->memory.load8(cpu, address + 1) << 8);
535}
536
537static uint32_t _GBCoreBusRead32(struct mCore* core, uint32_t address) {
538 struct LR35902Core* cpu = core->cpu;
539 return cpu->memory.load8(cpu, address) | (cpu->memory.load8(cpu, address + 1) << 8) |
540 (cpu->memory.load8(cpu, address + 2) << 16) | (cpu->memory.load8(cpu, address + 3) << 24);
541}
542
543static void _GBCoreBusWrite8(struct mCore* core, uint32_t address, uint8_t value) {
544 struct LR35902Core* cpu = core->cpu;
545 cpu->memory.store8(cpu, address, value);
546}
547
548static void _GBCoreBusWrite16(struct mCore* core, uint32_t address, uint16_t value) {
549 struct LR35902Core* cpu = core->cpu;
550 cpu->memory.store8(cpu, address, value);
551 cpu->memory.store8(cpu, address + 1, value >> 8);
552}
553
554static void _GBCoreBusWrite32(struct mCore* core, uint32_t address, uint32_t value) {
555 struct LR35902Core* cpu = core->cpu;
556 cpu->memory.store8(cpu, address, value);
557 cpu->memory.store8(cpu, address + 1, value >> 8);
558 cpu->memory.store8(cpu, address + 2, value >> 16);
559 cpu->memory.store8(cpu, address + 3, value >> 24);
560}
561
562static uint32_t _GBCoreRawRead8(struct mCore* core, uint32_t address, int segment) {
563 struct LR35902Core* cpu = core->cpu;
564 return GBView8(cpu, address, segment);
565}
566
567static uint32_t _GBCoreRawRead16(struct mCore* core, uint32_t address, int segment) {
568 struct LR35902Core* cpu = core->cpu;
569 return GBView8(cpu, address, segment) | (GBView8(cpu, address + 1, segment) << 8);
570}
571
572static uint32_t _GBCoreRawRead32(struct mCore* core, uint32_t address, int segment) {
573 struct LR35902Core* cpu = core->cpu;
574 return GBView8(cpu, address, segment) | (GBView8(cpu, address + 1, segment) << 8) |
575 (GBView8(cpu, address + 2, segment) << 16) | (GBView8(cpu, address + 3, segment) << 24);
576}
577
578static void _GBCoreRawWrite8(struct mCore* core, uint32_t address, int segment, uint8_t value) {
579 struct LR35902Core* cpu = core->cpu;
580 GBPatch8(cpu, address, value, NULL, segment);
581}
582
583static void _GBCoreRawWrite16(struct mCore* core, uint32_t address, int segment, uint16_t value) {
584 struct LR35902Core* cpu = core->cpu;
585 GBPatch8(cpu, address, value, NULL, segment);
586 GBPatch8(cpu, address + 1, value >> 8, NULL, segment);
587}
588
589static void _GBCoreRawWrite32(struct mCore* core, uint32_t address, int segment, uint32_t value) {
590 struct LR35902Core* cpu = core->cpu;
591 GBPatch8(cpu, address, value, NULL, segment);
592 GBPatch8(cpu, address + 1, value >> 8, NULL, segment);
593 GBPatch8(cpu, address + 2, value >> 16, NULL, segment);
594 GBPatch8(cpu, address + 3, value >> 24, NULL, segment);
595}
596
597size_t _GBListMemoryBlocks(const struct mCore* core, const struct mCoreMemoryBlock** blocks) {
598 const struct GB* gb = core->board;
599 switch (gb->model) {
600 case GB_MODEL_DMG:
601 case GB_MODEL_MGB:
602 case GB_MODEL_SGB:
603 case GB_MODEL_SGB2:
604 default:
605 *blocks = _GBMemoryBlocks;
606 return sizeof(_GBMemoryBlocks) / sizeof(*_GBMemoryBlocks);
607 case GB_MODEL_CGB:
608 case GB_MODEL_AGB:
609 *blocks = _GBCMemoryBlocks;
610 return sizeof(_GBCMemoryBlocks) / sizeof(*_GBCMemoryBlocks);
611 }
612}
613
614void* _GBGetMemoryBlock(struct mCore* core, size_t id, size_t* sizeOut) {
615 struct GB* gb = core->board;
616 bool isCgb = gb->model >= GB_MODEL_CGB;
617 switch (id) {
618 default:
619 return NULL;
620 case GB_REGION_CART_BANK0:
621 *sizeOut = gb->memory.romSize;
622 return gb->memory.rom;
623 case GB_REGION_VRAM:
624 *sizeOut = GB_SIZE_WORKING_RAM_BANK0 * (isCgb ? 1 : 2);
625 return gb->video.vram;
626 case GB_REGION_EXTERNAL_RAM:
627 *sizeOut = gb->sramSize;
628 return gb->memory.sram;
629 case GB_REGION_WORKING_RAM_BANK0:
630 *sizeOut = GB_SIZE_VRAM * (isCgb ? 8 : 2);
631 return gb->memory.wram;
632 case GB_BASE_OAM:
633 *sizeOut = GB_SIZE_OAM;
634 return gb->video.oam.raw;
635 case GB_BASE_HRAM:
636 *sizeOut = GB_SIZE_HRAM;
637 return gb->memory.hram;
638 }
639}
640
641#ifdef USE_DEBUGGERS
642static bool _GBCoreSupportsDebuggerType(struct mCore* core, enum mDebuggerType type) {
643 UNUSED(core);
644 switch (type) {
645 case DEBUGGER_CLI:
646 return true;
647 default:
648 return false;
649 }
650}
651
652static struct mDebuggerPlatform* _GBCoreDebuggerPlatform(struct mCore* core) {
653 struct GBCore* gbcore = (struct GBCore*) core;
654 struct GB* gb = core->board;
655 if (!gbcore->debuggerPlatform) {
656 struct LR35902Debugger* platform = (struct LR35902Debugger*) LR35902DebuggerPlatformCreate();
657 if (gb->model >= GB_MODEL_CGB) {
658 platform->segments = _GBCSegments;
659 } else {
660 platform->segments = _GBSegments;
661 }
662 gbcore->debuggerPlatform = &platform->d;
663 }
664 return gbcore->debuggerPlatform;
665}
666
667static struct CLIDebuggerSystem* _GBCoreCliDebuggerSystem(struct mCore* core) {
668 return GBCLIDebuggerCreate(core);
669}
670
671static void _GBCoreAttachDebugger(struct mCore* core, struct mDebugger* debugger) {
672 struct LR35902Core* cpu = core->cpu;
673 if (core->debugger) {
674 LR35902HotplugDetach(cpu, CPU_COMPONENT_DEBUGGER);
675 }
676 cpu->components[CPU_COMPONENT_DEBUGGER] = &debugger->d;
677 LR35902HotplugAttach(cpu, CPU_COMPONENT_DEBUGGER);
678 core->debugger = debugger;
679}
680
681static void _GBCoreDetachDebugger(struct mCore* core) {
682 struct LR35902Core* cpu = core->cpu;
683 if (core->debugger) {
684 LR35902HotplugDetach(cpu, CPU_COMPONENT_DEBUGGER);
685 }
686 cpu->components[CPU_COMPONENT_DEBUGGER] = NULL;
687 core->debugger = NULL;
688}
689
690static void _GBCoreLoadSymbols(struct mCore* core, struct VFile* vf) {
691 core->symbolTable = mDebuggerSymbolTableCreate();
692#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
693 if (!vf) {
694 vf = mDirectorySetOpenSuffix(&core->dirs, core->dirs.base, ".sym", O_RDONLY);
695 }
696#endif
697 if (!vf) {
698 return;
699 }
700 GBLoadSymbols(core->symbolTable, vf);
701}
702#endif
703
704static struct mCheatDevice* _GBCoreCheatDevice(struct mCore* core) {
705 struct GBCore* gbcore = (struct GBCore*) core;
706 if (!gbcore->cheatDevice) {
707 gbcore->cheatDevice = GBCheatDeviceCreate();
708 ((struct LR35902Core*) core->cpu)->components[CPU_COMPONENT_CHEAT_DEVICE] = &gbcore->cheatDevice->d;
709 LR35902HotplugAttach(core->cpu, CPU_COMPONENT_CHEAT_DEVICE);
710 gbcore->cheatDevice->p = core;
711 }
712 return gbcore->cheatDevice;
713}
714
715static size_t _GBCoreSavedataClone(struct mCore* core, void** sram) {
716 struct GB* gb = core->board;
717 struct VFile* vf = gb->sramVf;
718 if (vf) {
719 *sram = malloc(vf->size(vf));
720 vf->seek(vf, 0, SEEK_SET);
721 return vf->read(vf, *sram, vf->size(vf));
722 }
723 *sram = malloc(gb->sramSize);
724 memcpy(*sram, gb->memory.sram, gb->sramSize);
725 return gb->sramSize;
726}
727
728static bool _GBCoreSavedataRestore(struct mCore* core, const void* sram, size_t size, bool writeback) {
729 struct GB* gb = core->board;
730 if (!writeback) {
731 struct VFile* vf = VFileMemChunk(sram, size);
732 GBSavedataMask(gb, vf, true);
733 return true;
734 }
735 struct VFile* vf = gb->sramVf;
736 if (vf) {
737 vf->seek(vf, 0, SEEK_SET);
738 return vf->write(vf, sram, size) > 0;
739 }
740 if (size > 0x20000) {
741 size = 0x20000;
742 }
743 GBResizeSram(gb, size);
744 memcpy(gb->memory.sram, sram, size);
745 return true;
746}
747
748static size_t _GBCoreListVideoLayers(const struct mCore* core, const struct mCoreChannelInfo** info) {
749 UNUSED(core);
750 *info = _GBVideoLayers;
751 return sizeof(_GBVideoLayers) / sizeof(*_GBVideoLayers);
752}
753
754static size_t _GBCoreListAudioChannels(const struct mCore* core, const struct mCoreChannelInfo** info) {
755 UNUSED(core);
756 *info = _GBAudioChannels;
757 return sizeof(_GBAudioChannels) / sizeof(*_GBAudioChannels);
758}
759
760static void _GBCoreEnableVideoLayer(struct mCore* core, size_t id, bool enable) {
761 struct GB* gb = core->board;
762 switch (id) {
763 case 0:
764 gb->video.renderer->disableBG = !enable;
765 break;
766 case 1:
767 gb->video.renderer->disableOBJ = !enable;
768 break;
769 case 2:
770 gb->video.renderer->disableWIN = !enable;
771 break;
772 default:
773 break;
774 }
775}
776
777static void _GBCoreEnableAudioChannel(struct mCore* core, size_t id, bool enable) {
778 struct GB* gb = core->board;
779 switch (id) {
780 case 0:
781 case 1:
782 case 2:
783 case 3:
784 gb->audio.forceDisableCh[id] = !enable;
785 break;
786 default:
787 break;
788 }
789}
790
791static void _GBCoreStartVideoLog(struct mCore* core, struct mVideoLogContext* context) {
792 struct GBCore* gbcore = (struct GBCore*) core;
793 struct GB* gb = core->board;
794 gbcore->logContext = context;
795
796 int channelId = mVideoLoggerAddChannel(context);
797 gbcore->proxyRenderer.logger = malloc(sizeof(struct mVideoLogger));
798 mVideoLoggerRendererCreate(gbcore->proxyRenderer.logger, false);
799 mVideoLoggerAttachChannel(gbcore->proxyRenderer.logger, context, channelId);
800 gbcore->proxyRenderer.logger->block = false;
801
802 GBVideoProxyRendererCreate(&gbcore->proxyRenderer, &gbcore->renderer.d);
803 GBVideoProxyRendererShim(&gb->video, &gbcore->proxyRenderer);
804}
805
806static void _GBCoreEndVideoLog(struct mCore* core) {
807 struct GBCore* gbcore = (struct GBCore*) core;
808 struct GB* gb = core->board;
809 GBVideoProxyRendererUnshim(&gb->video, &gbcore->proxyRenderer);
810 free(gbcore->proxyRenderer.logger);
811 gbcore->proxyRenderer.logger = NULL;
812}
813
814struct mCore* GBCoreCreate(void) {
815 struct GBCore* gbcore = malloc(sizeof(*gbcore));
816 struct mCore* core = &gbcore->d;
817 memset(&core->opts, 0, sizeof(core->opts));
818 core->cpu = NULL;
819 core->board = NULL;
820 core->debugger = NULL;
821 core->symbolTable = NULL;
822 core->init = _GBCoreInit;
823 core->deinit = _GBCoreDeinit;
824 core->platform = _GBCorePlatform;
825 core->setSync = _GBCoreSetSync;
826 core->loadConfig = _GBCoreLoadConfig;
827 core->desiredVideoDimensions = _GBCoreDesiredVideoDimensions;
828 core->setVideoBuffer = _GBCoreSetVideoBuffer;
829 core->getPixels = _GBCoreGetPixels;
830 core->putPixels = _GBCorePutPixels;
831 core->getAudioChannel = _GBCoreGetAudioChannel;
832 core->setAudioBufferSize = _GBCoreSetAudioBufferSize;
833 core->getAudioBufferSize = _GBCoreGetAudioBufferSize;
834 core->setAVStream = _GBCoreSetAVStream;
835 core->addCoreCallbacks = _GBCoreAddCoreCallbacks;
836 core->clearCoreCallbacks = _GBCoreClearCoreCallbacks;
837 core->isROM = GBIsROM;
838 core->loadROM = _GBCoreLoadROM;
839 core->loadBIOS = _GBCoreLoadBIOS;
840 core->loadSave = _GBCoreLoadSave;
841 core->loadTemporarySave = _GBCoreLoadTemporarySave;
842 core->loadPatch = _GBCoreLoadPatch;
843 core->unloadROM = _GBCoreUnloadROM;
844 core->checksum = _GBCoreChecksum;
845 core->reset = _GBCoreReset;
846 core->runFrame = _GBCoreRunFrame;
847 core->runLoop = _GBCoreRunLoop;
848 core->step = _GBCoreStep;
849 core->stateSize = _GBCoreStateSize;
850 core->loadState = _GBCoreLoadState;
851 core->saveState = _GBCoreSaveState;
852 core->setKeys = _GBCoreSetKeys;
853 core->addKeys = _GBCoreAddKeys;
854 core->clearKeys = _GBCoreClearKeys;
855 core->frameCounter = _GBCoreFrameCounter;
856 core->frameCycles = _GBCoreFrameCycles;
857 core->frequency = _GBCoreFrequency;
858 core->getGameTitle = _GBCoreGetGameTitle;
859 core->getGameCode = _GBCoreGetGameCode;
860 core->setPeripheral = _GBCoreSetPeripheral;
861 core->busRead8 = _GBCoreBusRead8;
862 core->busRead16 = _GBCoreBusRead16;
863 core->busRead32 = _GBCoreBusRead32;
864 core->busWrite8 = _GBCoreBusWrite8;
865 core->busWrite16 = _GBCoreBusWrite16;
866 core->busWrite32 = _GBCoreBusWrite32;
867 core->rawRead8 = _GBCoreRawRead8;
868 core->rawRead16 = _GBCoreRawRead16;
869 core->rawRead32 = _GBCoreRawRead32;
870 core->rawWrite8 = _GBCoreRawWrite8;
871 core->rawWrite16 = _GBCoreRawWrite16;
872 core->rawWrite32 = _GBCoreRawWrite32;
873 core->listMemoryBlocks = _GBListMemoryBlocks;
874 core->getMemoryBlock = _GBGetMemoryBlock;
875#ifdef USE_DEBUGGERS
876 core->supportsDebuggerType = _GBCoreSupportsDebuggerType;
877 core->debuggerPlatform = _GBCoreDebuggerPlatform;
878 core->cliDebuggerSystem = _GBCoreCliDebuggerSystem;
879 core->attachDebugger = _GBCoreAttachDebugger;
880 core->detachDebugger = _GBCoreDetachDebugger;
881 core->loadSymbols = _GBCoreLoadSymbols;
882#endif
883 core->cheatDevice = _GBCoreCheatDevice;
884 core->savedataClone = _GBCoreSavedataClone;
885 core->savedataRestore = _GBCoreSavedataRestore;
886 core->listVideoLayers = _GBCoreListVideoLayers;
887 core->listAudioChannels = _GBCoreListAudioChannels;
888 core->enableVideoLayer = _GBCoreEnableVideoLayer;
889 core->enableAudioChannel = _GBCoreEnableAudioChannel;
890#ifndef MINIMAL_CORE
891 core->startVideoLog = _GBCoreStartVideoLog;
892 core->endVideoLog = _GBCoreEndVideoLog;
893#endif
894 return core;
895}
896
897#ifndef MINIMAL_CORE
898static void _GBVLPStartFrameCallback(void *context) {
899 struct mCore* core = context;
900 struct GBCore* gbcore = (struct GBCore*) core;
901 struct GB* gb = core->board;
902
903 if (!mVideoLoggerRendererRun(gbcore->proxyRenderer.logger, true)) {
904 GBVideoProxyRendererUnshim(&gb->video, &gbcore->proxyRenderer);
905 mVideoLogContextRewind(gbcore->logContext, core);
906 GBVideoProxyRendererShim(&gb->video, &gbcore->proxyRenderer);
907 }
908}
909
910static bool _GBVLPInit(struct mCore* core) {
911 struct GBCore* gbcore = (struct GBCore*) core;
912 if (!_GBCoreInit(core)) {
913 return false;
914 }
915 gbcore->proxyRenderer.logger = malloc(sizeof(struct mVideoLogger));
916 mVideoLoggerRendererCreate(gbcore->proxyRenderer.logger, true);
917 GBVideoProxyRendererCreate(&gbcore->proxyRenderer, NULL);
918 memset(&gbcore->logCallbacks, 0, sizeof(gbcore->logCallbacks));
919 gbcore->logCallbacks.videoFrameStarted = _GBVLPStartFrameCallback;
920 gbcore->logCallbacks.context = core;
921 core->addCoreCallbacks(core, &gbcore->logCallbacks);
922 return true;
923}
924
925static void _GBVLPDeinit(struct mCore* core) {
926 struct GBCore* gbcore = (struct GBCore*) core;
927 if (gbcore->logContext) {
928 mVideoLogContextDestroy(core, gbcore->logContext);
929 }
930 _GBCoreDeinit(core);
931}
932
933static void _GBVLPReset(struct mCore* core) {
934 struct GBCore* gbcore = (struct GBCore*) core;
935 struct GB* gb = (struct GB*) core->board;
936 if (gb->video.renderer == &gbcore->proxyRenderer.d) {
937 GBVideoProxyRendererUnshim(&gb->video, &gbcore->proxyRenderer);
938 } else if (gbcore->renderer.outputBuffer) {
939 struct GBVideoRenderer* renderer = &gbcore->renderer.d;
940 GBVideoAssociateRenderer(&gb->video, renderer);
941 }
942
943 LR35902Reset(core->cpu);
944 mVideoLogContextRewind(gbcore->logContext, core);
945 GBVideoProxyRendererShim(&gb->video, &gbcore->proxyRenderer);
946
947 // Make sure CPU loop never spins
948 GBHalt(gb->cpu);
949 gb->memory.ie = 0;
950 gb->memory.ime = false;
951}
952
953static bool _GBVLPLoadROM(struct mCore* core, struct VFile* vf) {
954 struct GBCore* gbcore = (struct GBCore*) core;
955 gbcore->logContext = mVideoLogContextCreate(NULL);
956 if (!mVideoLogContextLoad(gbcore->logContext, vf)) {
957 mVideoLogContextDestroy(core, gbcore->logContext);
958 gbcore->logContext = NULL;
959 return false;
960 }
961 mVideoLoggerAttachChannel(gbcore->proxyRenderer.logger, gbcore->logContext, 0);
962 return true;
963}
964
965static bool _GBVLPLoadState(struct mCore* core, const void* buffer) {
966 struct GB* gb = (struct GB*) core->board;
967 const struct GBSerializedState* state = buffer;
968
969 gb->timing.root = NULL;
970 gb->model = state->model;
971
972 gb->cpu->pc = GB_BASE_HRAM;
973 gb->cpu->memory.setActiveRegion(gb->cpu, gb->cpu->pc);
974
975 GBVideoDeserialize(&gb->video, state);
976 GBIODeserialize(gb, state);
977 GBAudioReset(&gb->audio);
978
979 // Make sure CPU loop never spins
980 GBHalt(gb->cpu);
981 gb->memory.ie = 0;
982 gb->memory.ime = false;
983
984 return true;
985}
986
987static bool _returnTrue(struct VFile* vf) {
988 UNUSED(vf);
989 return true;
990}
991
992struct mCore* GBVideoLogPlayerCreate(void) {
993 struct mCore* core = GBCoreCreate();
994 core->init = _GBVLPInit;
995 core->deinit = _GBVLPDeinit;
996 core->reset = _GBVLPReset;
997 core->loadROM = _GBVLPLoadROM;
998 core->loadState = _GBVLPLoadState;
999 core->isROM = _returnTrue;
1000 return core;
1001}
1002#else
1003struct mCore* GBVideoLogPlayerCreate(void) {
1004 return false;
1005}
1006#endif