75 lines
2.4 KiB
Zig
75 lines
2.4 KiB
Zig
const std = @import("std");
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const clap = @import("zig-clap");
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const emu = @import("core/emu.zig");
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const Ui = @import("platform.zig").Ui;
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const SharedCtx = @import("core/emu.zig").SharedCtx;
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const System = @import("core/emu.zig").System;
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const Scheduler = @import("core/Scheduler.zig");
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const Allocator = std.mem.Allocator;
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const ClapResult = clap.Result(clap.Help, &cli_params, clap.parsers.default);
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const cli_params = clap.parseParamsComptime(
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\\-h, --help Display this help and exit.
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\\<str> Path to the NDS ROM
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\\
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);
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pub fn main() !void {
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const log = std.log.scoped(.main);
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var gpa = std.heap.GeneralPurposeAllocator(.{}){};
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defer std.debug.assert(gpa.deinit() == .ok);
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const allocator = gpa.allocator();
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const result = try clap.parse(clap.Help, &cli_params, clap.parsers.default, .{});
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defer result.deinit();
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const rom_path = try handlePositional(result);
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log.debug("loading rom from: {s}", .{rom_path});
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const rom_file = try std.fs.cwd().openFile(rom_path, .{});
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defer rom_file.close();
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const ctx = try SharedCtx.init(allocator);
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defer ctx.deinit(allocator);
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var scheduler = try Scheduler.init(allocator);
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defer scheduler.deinit();
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const system: System = blk: {
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const IBus = @import("arm32").Bus;
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const IScheduler = @import("arm32").Scheduler;
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const ICoprocessor = @import("arm32").Coprocessor;
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var cp15 = System.Cp15{};
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var bus7 = try System.Bus7.init(allocator, &scheduler, ctx);
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var bus9 = try System.Bus9.init(allocator, &scheduler, ctx);
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var arm7tdmi = System.Arm7tdmi.init(IScheduler.init(&scheduler), IBus.init(&bus7));
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var arm946es = System.Arm946es.init(IScheduler.init(&scheduler), IBus.init(&bus9), ICoprocessor.init(&cp15));
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break :blk .{ .arm7tdmi = &arm7tdmi, .arm946es = &arm946es, .bus7 = &bus7, .bus9 = &bus9, .cp15 = &cp15 };
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};
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defer system.deinit(allocator);
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const rom_title = try emu.load(allocator, system, rom_file);
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var ui = try Ui.init(allocator);
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defer ui.deinit(allocator);
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ui.setTitle(rom_title);
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try ui.run(&scheduler, system);
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}
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fn handlePositional(result: ClapResult) ![]const u8 {
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return switch (result.positionals.len) {
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0 => error.too_few_positional_arguments,
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1 => result.positionals[0],
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else => return error.too_many_positional_arguments,
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};
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}
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