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 "cli.h"
 7
 8#include "core/core.h"
 9#include "core/serialize.h"
10#include "gb/gb.h"
11#include "gb/io.h"
12#include "gb/video.h"
13#include "lr35902/debugger/cli-debugger.h"
14
15#ifdef USE_CLI_DEBUGGER
16
17static void _GBCLIDebuggerInit(struct CLIDebuggerSystem*);
18static bool _GBCLIDebuggerCustom(struct CLIDebuggerSystem*);
19
20static void _frame(struct CLIDebugger*, struct CLIDebugVector*);
21
22struct CLIDebuggerCommandSummary _GBCLIDebuggerCommands[] = {
23	{ "frame", _frame, 0, "Frame advance" },
24	{ 0, 0, 0, 0 }
25};
26
27struct CLIDebuggerSystem* GBCLIDebuggerCreate(struct mCore* core) {
28	UNUSED(core);
29	struct GBCLIDebugger* debugger = malloc(sizeof(struct GBCLIDebugger));
30	LR35902CLIDebuggerCreate(&debugger->d);
31	debugger->d.init = _GBCLIDebuggerInit;
32	debugger->d.deinit = NULL;
33	debugger->d.custom = _GBCLIDebuggerCustom;
34	debugger->d.lookupIdentifier = NULL;
35
36	debugger->d.name = "Game Boy";
37	debugger->d.commands = _GBCLIDebuggerCommands;
38
39	debugger->core = core;
40
41	return &debugger->d;
42}
43
44static void _GBCLIDebuggerInit(struct CLIDebuggerSystem* debugger) {
45	struct GBCLIDebugger* gbDebugger = (struct GBCLIDebugger*) debugger;
46
47	gbDebugger->frameAdvance = false;
48}
49
50static bool _GBCLIDebuggerCustom(struct CLIDebuggerSystem* debugger) {
51	struct GBCLIDebugger* gbDebugger = (struct GBCLIDebugger*) debugger;
52
53	if (gbDebugger->frameAdvance) {
54		if (!gbDebugger->inVblank && GBRegisterSTATGetMode(((struct GB*) gbDebugger->core->board)->memory.io[REG_STAT]) == 1) {
55			mDebuggerEnter(&gbDebugger->d.p->d, DEBUGGER_ENTER_MANUAL, 0);
56			gbDebugger->frameAdvance = false;
57			return false;
58		}
59		gbDebugger->inVblank = GBRegisterSTATGetMode(((struct GB*) gbDebugger->core->board)->memory.io[REG_STAT]) == 1;
60		return true;
61	}
62	return false;
63}
64
65static void _frame(struct CLIDebugger* debugger, struct CLIDebugVector* dv) {
66	UNUSED(dv);
67	debugger->d.state = DEBUGGER_CUSTOM;
68
69	struct GBCLIDebugger* gbDebugger = (struct GBCLIDebugger*) debugger->system;
70	gbDebugger->frameAdvance = true;
71	gbDebugger->inVblank = GBRegisterSTATGetMode(((struct GB*) gbDebugger->core->board)->memory.io[REG_STAT]) == 1;
72}
73
74#endif