feat: expose module for zig build system

src/lib.zig

@@ -89,7 +89,7 @@ pub const Bus = struct {
 
         return .{
             .ptr = obj,
-            .vtable = &.{
+            .vtab = &.{
                 .read8 = impl.read8,
                 .read16 = impl.read16,
                 .read32 = impl.read32,
@@ -164,44 +164,13 @@ pub const Scheduler = struct {
     }
 };
 
-// ---
-// TESTING
-// ---
-
-const ExampleBus = struct {
-    _: u32 = 0, // Note: need this field so that the ptr align of *lib.ExampleBus != 0
-
-    pub fn read(self: *@This(), comptime T: type, address: u32) T {
-        _ = self;
-        _ = address;
-        return 0;
-    }
-
-    pub fn write(self: *@This(), comptime T: type, address: u32, value: T) void {
-        _ = self;
-        _ = value;
-        _ = address;
-    }
-};
-
-const ExampleScheduler = struct {
-    tick: u64 = 0,
-
-    pub fn now(self: *const @This()) u64 {
-        return self.tick;
-    }
-};
-
 test "create ARMv4T interface" {
-    var bus_impl = ExampleBus{};
-    var scheduler_impl = ExampleScheduler{};
-
-    const bus_interface = Bus.init(&bus_impl);
-    const scheduler_interface = Scheduler.init(&scheduler_impl);
+    var bus: Bus = .{ .ptr = undefined, .vtable = undefined };
+    var scheduler: Scheduler = .{ .ptr = undefined, .nowFn = undefined };
 
     var arm7tdmi = Arm7tdmi{
-        .sched = scheduler_interface,
-        .bus = bus_interface,
+        .sched = scheduler,
+        .bus = bus,
         .cpsr = .{ .raw = 0x0000_001F },
         .spsr = .{ .raw = 0x0000_0000 },
     };
@@ -213,15 +182,12 @@ test "create ARMv4T interface" {
 }
 
 test "create ARMv5TE interface" {
-    var bus_impl = ExampleBus{};
-    var scheduler_impl = ExampleScheduler{};
+    var bus: Bus = .{ .ptr = undefined, .vtable = undefined };
+    var scheduler: Scheduler = .{ .ptr = undefined, .nowFn = undefined };
 
-    const bus_interface = Bus.init(&bus_impl);
-    const scheduler_interface = Scheduler.init(&scheduler_impl);
-
-    var arm946es = Arm946es{
-        .sched = scheduler_interface,
-        .bus = bus_interface,
+    var arm946es = Arm7tdmi{
+        .sched = scheduler,
+        .bus = bus,
         .cpsr = .{ .raw = 0x0000_001F },
         .spsr = .{ .raw = 0x0000_0000 },
     };