1/* Copyright (c) 2013-2015 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/internal/gba/extra/cli.h>
  7
  8#include <mgba/core/core.h>
  9#include <mgba/core/serialize.h>
 10#include <mgba/internal/gba/gba.h>
 11#include <mgba/internal/gba/io.h>
 12#include <mgba/internal/gba/video.h>
 13#include <mgba/internal/arm/debugger/cli-debugger.h>
 14
 15static void _GBACLIDebuggerInit(struct CLIDebuggerSystem*);
 16static bool _GBACLIDebuggerCustom(struct CLIDebuggerSystem*);
 17
 18static void _frame(struct CLIDebugger*, struct CLIDebugVector*);
 19static void _load(struct CLIDebugger*, struct CLIDebugVector*);
 20static void _save(struct CLIDebugger*, struct CLIDebugVector*);
 21
 22struct CLIDebuggerCommandSummary _GBACLIDebuggerCommands[] = {
 23	{ "frame", _frame, "", "Frame advance" },
 24	{ "load", _load, "*", "Load a savestate" },
 25	{ "save", _save, "*", "Save a savestate" },
 26	{ 0, 0, 0, 0 }
 27};
 28
 29struct GBACLIDebugger* GBACLIDebuggerCreate(struct mCore* core) {
 30	struct GBACLIDebugger* debugger = malloc(sizeof(struct GBACLIDebugger));
 31	ARMCLIDebuggerCreate(&debugger->d);
 32	debugger->d.init = _GBACLIDebuggerInit;
 33	debugger->d.deinit = NULL;
 34	debugger->d.custom = _GBACLIDebuggerCustom;
 35
 36	debugger->d.name = "Game Boy Advance";
 37	debugger->d.commands = _GBACLIDebuggerCommands;
 38
 39	debugger->core = core;
 40
 41	return debugger;
 42}
 43
 44static void _GBACLIDebuggerInit(struct CLIDebuggerSystem* debugger) {
 45	struct GBACLIDebugger* gbaDebugger = (struct GBACLIDebugger*) debugger;
 46
 47	gbaDebugger->frameAdvance = false;
 48}
 49
 50static bool _GBACLIDebuggerCustom(struct CLIDebuggerSystem* debugger) {
 51	struct GBACLIDebugger* gbaDebugger = (struct GBACLIDebugger*) debugger;
 52
 53	if (gbaDebugger->frameAdvance) {
 54		if (!gbaDebugger->inVblank && GBARegisterDISPSTATIsInVblank(((struct GBA*) gbaDebugger->core->board)->memory.io[REG_DISPSTAT >> 1])) {
 55			mDebuggerEnter(&gbaDebugger->d.p->d, DEBUGGER_ENTER_MANUAL, 0);
 56			gbaDebugger->frameAdvance = false;
 57			return false;
 58		}
 59		gbaDebugger->inVblank = GBARegisterDISPSTATGetInVblank(((struct GBA*) gbaDebugger->core->board)->memory.io[REG_DISPSTAT >> 1]);
 60		return true;
 61	}
 62	return true;
 63}
 64
 65static void _frame(struct CLIDebugger* debugger, struct CLIDebugVector* dv) {
 66	UNUSED(dv);
 67	debugger->d.state = DEBUGGER_CUSTOM;
 68
 69	struct GBACLIDebugger* gbaDebugger = (struct GBACLIDebugger*) debugger->system;
 70	gbaDebugger->frameAdvance = true;
 71	gbaDebugger->inVblank = GBARegisterDISPSTATGetInVblank(((struct GBA*) gbaDebugger->core->board)->memory.io[REG_DISPSTAT >> 1]);
 72}
 73
 74static void _load(struct CLIDebugger* debugger, struct CLIDebugVector* dv) {
 75	struct CLIDebuggerBackend* be = debugger->backend;
 76	if (!dv || dv->type != CLIDV_INT_TYPE) {
 77		be->printf(be, "%s\n", ERROR_MISSING_ARGS);
 78		return;
 79	}
 80
 81	int state = dv->intValue;
 82	if (state < 1 || state > 9) {
 83		be->printf(be, "State %u out of range", state);
 84	}
 85
 86	struct GBACLIDebugger* gbaDebugger = (struct GBACLIDebugger*) debugger->system;
 87
 88	mCoreLoadState(gbaDebugger->core, dv->intValue, SAVESTATE_SCREENSHOT | SAVESTATE_RTC);
 89}
 90
 91// TODO: Put back rewind
 92
 93static void _save(struct CLIDebugger* debugger, struct CLIDebugVector* dv) {
 94	struct CLIDebuggerBackend* be = debugger->backend;
 95	if (!dv || dv->type != CLIDV_INT_TYPE) {
 96		be->printf(be, "%s\n", ERROR_MISSING_ARGS);
 97		return;
 98	}
 99
100	int state = dv->intValue;
101	if (state < 1 || state > 9) {
102		be->printf(be, "State %u out of range", state);
103	}
104
105	struct GBACLIDebugger* gbaDebugger = (struct GBACLIDebugger*) debugger->system;
106
107	mCoreSaveState(gbaDebugger->core, dv->intValue, SAVESTATE_SCREENSHOT | SAVESTATE_RTC | SAVESTATE_METADATA);
108}