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*);
19static uint32_t _GBCLIDebuggerLookupIdentifier(struct CLIDebuggerSystem*, const char* name, struct CLIDebugVector* dv);
20
21static void _frame(struct CLIDebugger*, struct CLIDebugVector*);
22
23struct CLIDebuggerCommandSummary _GBCLIDebuggerCommands[] = {
24	{ "frame", _frame, 0, "Frame advance" },
25	{ 0, 0, 0, 0 }
26};
27
28struct CLIDebuggerSystem* GBCLIDebuggerCreate(struct mCore* core) {
29	UNUSED(core);
30	struct GBCLIDebugger* debugger = malloc(sizeof(struct GBCLIDebugger));
31	LR35902CLIDebuggerCreate(&debugger->d);
32	debugger->d.init = _GBCLIDebuggerInit;
33	debugger->d.deinit = NULL;
34	debugger->d.custom = _GBCLIDebuggerCustom;
35	debugger->d.lookupIdentifier = _GBCLIDebuggerLookupIdentifier;
36
37	debugger->d.name = "Game Boy";
38	debugger->d.commands = _GBCLIDebuggerCommands;
39
40	debugger->core = core;
41
42	return &debugger->d;
43}
44
45static void _GBCLIDebuggerInit(struct CLIDebuggerSystem* debugger) {
46	struct GBCLIDebugger* gbDebugger = (struct GBCLIDebugger*) debugger;
47
48	gbDebugger->frameAdvance = false;
49}
50
51static bool _GBCLIDebuggerCustom(struct CLIDebuggerSystem* debugger) {
52	struct GBCLIDebugger* gbDebugger = (struct GBCLIDebugger*) debugger;
53
54	if (gbDebugger->frameAdvance) {
55		if (!gbDebugger->inVblank && GBRegisterSTATGetMode(((struct GB*) gbDebugger->core->board)->memory.io[REG_STAT]) == 1) {
56			mDebuggerEnter(&gbDebugger->d.p->d, DEBUGGER_ENTER_MANUAL, 0);
57			gbDebugger->frameAdvance = false;
58			return false;
59		}
60		gbDebugger->inVblank = GBRegisterSTATGetMode(((struct GB*) gbDebugger->core->board)->memory.io[REG_STAT]) == 1;
61		return true;
62	}
63	return false;
64}
65
66static uint32_t _GBCLIDebuggerLookupIdentifier(struct CLIDebuggerSystem* debugger, const char* name, struct CLIDebugVector* dv) {
67	UNUSED(debugger);
68	int i;
69	for (i = 0; i < REG_MAX; ++i) {
70		const char* reg = GBIORegisterNames[i];
71		if (reg && strcasecmp(reg, name) == 0) {
72			return GB_BASE_IO | i;
73		}
74	}
75	dv->type = CLIDV_ERROR_TYPE;
76	return 0;
77}
78
79static void _frame(struct CLIDebugger* debugger, struct CLIDebugVector* dv) {
80	UNUSED(dv);
81	debugger->d.state = DEBUGGER_CUSTOM;
82
83	struct GBCLIDebugger* gbDebugger = (struct GBCLIDebugger*) debugger->system;
84	gbDebugger->frameAdvance = true;
85	gbDebugger->inVblank = GBRegisterSTATGetMode(((struct GB*) gbDebugger->core->board)->memory.io[REG_STAT]) == 1;
86}
87
88#endif