1#include "commandline.h"
  2
  3#include "debugger/debugger.h"
  4
  5#ifdef USE_CLI_DEBUGGER
  6#include "debugger/cli-debugger.h"
  7#endif
  8
  9#ifdef USE_GDB_STUB
 10#include "debugger/gdb-stub.h"
 11#endif
 12
 13#include "gba/gba-video.h"
 14
 15#include <fcntl.h>
 16#include <getopt.h>
 17
 18#define GRAPHICS_OPTIONS "1234f"
 19#define GRAPHICS_USAGE \
 20	"\nGraphics options:\n" \
 21	"  -1               1x viewport\n" \
 22	"  -2               2x viewport\n" \
 23	"  -3               3x viewport\n" \
 24	"  -4               4x viewport\n" \
 25	"  -f               Start full-screen"
 26
 27static const struct option _options[] = {
 28	{ "bios",      required_argument, 0, 'b' },
 29	{ "dirmode",      required_argument, 0, 'D' },
 30	{ "frameskip", required_argument, 0, 's' },
 31#ifdef USE_CLI_DEBUGGER
 32	{ "debug",     no_argument, 0, 'd' },
 33#endif
 34#ifdef USE_GDB_STUB
 35	{ "gdb",       no_argument, 0, 'g' },
 36#endif
 37	{ "patch",     required_argument, 0, 'p' },
 38	{ 0, 0, 0, 0 }
 39};
 40
 41bool _parseGraphicsArg(struct SubParser* parser, int option, const char* arg);
 42
 43bool parseCommandArgs(struct StartupOptions* opts, int argc, char* const* argv, struct SubParser* subparser) {
 44	int ch;
 45	char options[64] =
 46		"b:Dl:p:s:"
 47#ifdef USE_CLI_DEBUGGER
 48		"d"
 49#endif
 50#ifdef USE_GDB_STUB
 51		"g"
 52#endif
 53	;
 54	if (subparser && subparser->extraOptions) {
 55		// TODO: modularize options to subparsers
 56		strncat(options, subparser->extraOptions, sizeof(options) - strlen(options) - 1);
 57	}
 58	while ((ch = getopt_long(argc, argv, options, _options, 0)) != -1) {
 59		switch (ch) {
 60		case 'b':
 61			opts->bios = strdup(optarg);
 62			break;
 63		case 'D':
 64			opts->dirmode = true;
 65			break;
 66#ifdef USE_CLI_DEBUGGER
 67		case 'd':
 68			if (opts->debuggerType != DEBUGGER_NONE) {
 69				return false;
 70			}
 71			opts->debuggerType = DEBUGGER_CLI;
 72			break;
 73#endif
 74#ifdef USE_GDB_STUB
 75		case 'g':
 76			if (opts->debuggerType != DEBUGGER_NONE) {
 77				return false;
 78			}
 79			opts->debuggerType = DEBUGGER_GDB;
 80			break;
 81#endif
 82		case 'l':
 83			opts->logLevel = atoi(optarg);
 84			break;
 85		case 'p':
 86			opts->patch = strdup(optarg);
 87			break;
 88		case 's':
 89			opts->frameskip = atoi(optarg);
 90			break;
 91		default:
 92			if (subparser) {
 93				if (!subparser->parse(subparser, ch, optarg)) {
 94					return false;
 95				}
 96			}
 97			break;
 98		}
 99	}
100	argc -= optind;
101	argv += optind;
102	if (argc != 1) {
103		return false;
104	}
105	opts->fname = strdup(argv[0]);
106	return true;
107}
108
109void freeOptions(struct StartupOptions* opts) {
110	free(opts->fname);
111	opts->fname = 0;
112
113	free(opts->bios);
114	opts->bios = 0;
115
116	free(opts->patch);
117	opts->patch = 0;
118}
119
120void initParserForGraphics(struct SubParser* parser, struct GraphicsOpts* opts) {
121	parser->usage = GRAPHICS_USAGE;
122	parser->opts = opts;
123	parser->parse = _parseGraphicsArg;
124	parser->extraOptions = GRAPHICS_OPTIONS;
125	opts->multiplier = 0;
126}
127
128bool _parseGraphicsArg(struct SubParser* parser, int option, const char* arg) {
129	UNUSED(arg);
130	struct GraphicsOpts* graphicsOpts = parser->opts;
131	switch (option) {
132	case 'f':
133		graphicsOpts->fullscreen = 1;
134		return true;
135	case '1':
136	case '2':
137	case '3':
138	case '4':
139		if (graphicsOpts->multiplier) {
140			return false;
141		}
142		graphicsOpts->multiplier = option - '0';
143		graphicsOpts->width = VIDEO_HORIZONTAL_PIXELS * graphicsOpts->multiplier;
144		graphicsOpts->height = VIDEO_VERTICAL_PIXELS * graphicsOpts->multiplier;
145		return true;
146	default:
147		return false;
148	}
149}
150
151struct ARMDebugger* createDebugger(struct StartupOptions* opts) {
152	union DebugUnion {
153		struct ARMDebugger d;
154#ifdef USE_CLI_DEBUGGER
155		struct CLIDebugger cli;
156#endif
157#ifdef USE_GDB_STUB
158		struct GDBStub gdb;
159#endif
160	};
161
162	union DebugUnion* debugger = malloc(sizeof(union DebugUnion));
163
164	switch (opts->debuggerType) {
165#ifdef USE_CLI_DEBUGGER
166	case DEBUGGER_CLI:
167		CLIDebuggerCreate(&debugger->cli);
168		break;
169#endif
170#ifdef USE_GDB_STUB
171	case DEBUGGER_GDB:
172		GDBStubCreate(&debugger->gdb);
173		GDBStubListen(&debugger->gdb, 2345, 0);
174		break;
175#endif
176	case DEBUGGER_NONE:
177	case DEBUGGER_MAX:
178		free(debugger);
179		return 0;
180		break;
181	}
182
183	return &debugger->d;
184}
185
186void usage(const char* arg0, const char* extraOptions) {
187	printf("usage: %s [option ...] file\n", arg0);
188	puts("\nGeneric options:");
189	puts("  -b, --bios FILE     GBA BIOS file to use");
190#ifdef USE_CLI_DEBUGGER
191	puts("  -d, --debug         Use command-line debugger");
192#endif
193#ifdef USE_GDB_STUB
194	puts("  -g, --gdb           Start GDB session (default port 2345)");
195#endif
196	puts("  -p, --patch         Apply a specified patch file when running");
197	puts("  -s, --frameskip N   Skip every N frames");
198	if (extraOptions) {
199		puts(extraOptions);
200	}
201}