feat: implement ARM7TDMI (and stub ARM946E-S)

build.zig

@@ -24,6 +24,12 @@ pub fn build(b: *std.Build) void {
         .optimize = optimize,
     });
 
+    const zba_util_mod = b.dependency("zba-util", .{}).module("zba-util");
+    const bitfield_mod = b.createModule(.{ .source_file = .{ .path = "lib/bitfield.zig" }, .dependencies = &.{} });
+
+    lib.addModule("zba-util", zba_util_mod); // https://git.musuka.dev/paoda/zba-util
+    lib.addModule("bitfield", bitfield_mod);
+
     // This declares intent for the library to be installed into the standard
     // location when the user invokes the "install" step (the default step when
     // running `zig build`).
@@ -37,6 +43,9 @@ pub fn build(b: *std.Build) void {
         .optimize = optimize,
     });
 
+    main_tests.addModule("zba-util", zba_util_mod); // https://git.musuka.dev/paoda/zba-util
+    main_tests.addModule("bitfield", bitfield_mod);
+
     const run_main_tests = b.addRunArtifact(main_tests);
 
     // This creates a build step. It will be visible in the `zig build --help` menu,