moving kernel code to kernel/

build.zig

@@ -45,18 +45,18 @@ pub fn build(b: *std.Build) void {
     // The generic kernel imports this as "arch" and never names x86_64, so a new
     // architecture is a matter of pointing this module at a different directory.
     const arch_mod = b.addModule("arch", .{
-        .root_source_file = b.path("src/arch/x86_64/cpu.zig"),
+        .root_source_file = b.path("src/kernel/arch/x86_64/cpu.zig"),
         .imports = &.{
             .{ .name = "danos", .module = mod }, // paging uses the shared BootInfo/memory-map types
         },
     });
     // CPU-exception stubs — real assembly, since they need cross-symbol
     // jumps/calls that Zig inline asm can't express (see the file's header).
-    arch_mod.addAssemblyFile(b.path("src/arch/x86_64/isr.s"));
+    arch_mod.addAssemblyFile(b.path("src/kernel/arch/x86_64/isr.s"));
 
     // Compile-time config the kernel reads as `@import("build_options")`. The
     // QEMU test harness sets -Dtest-case=<name> to run one self-test at boot.
-    const test_case = b.option([]const u8, "test-case", "Kernel self-test case to run at boot (see src/tests.zig)");
+    const test_case = b.option([]const u8, "test-case", "Kernel self-test case to run at boot (see src/kernel/tests.zig)");
     const build_options = b.addOptions();
     build_options.addOption(?[]const u8, "test_case", test_case);
     const build_options_mod = build_options.createModule();
@@ -72,9 +72,9 @@ pub fn build(b: *std.Build) void {
     });
 
     const exe = b.addExecutable(.{
-        .name = "danos",
+        .name = "kernel",
         .root_module = b.createModule(.{
-            .root_source_file = b.path("src/main.zig"),
+            .root_source_file = b.path("src/kernel/main.zig"),
             .target = kernel_target,
             .optimize = optimize,
             .code_model = .small, // kernel is linked in the low 2 GiB (see image_base)
@@ -90,7 +90,7 @@ pub fn build(b: *std.Build) void {
             },
         }),
     });
-    exe.setLinkerScript(b.path("src/arch/x86_64/linker.ld"));
+    exe.setLinkerScript(b.path("src/kernel/arch/x86_64/linker.ld"));
     exe.entry = .{ .symbol_name = "_start" };
     // Physical address the bootloader loads the kernel to (identity-mapped under
     // UEFI). Overrides Zig's default image base so the linker script's layout is
@@ -153,7 +153,7 @@ pub fn build(b: *std.Build) void {
         .dest_dir = .{ .override = .{ .custom = "esp/EFI/BOOT" } },
     });
     // The bootloader loads the kernel by name from the volume root, so drop the
-    // kernel ELF at esp/danos.
+    // kernel ELF at esp/kernel.
     const kernel_install = b.addInstallArtifact(exe, .{
         .dest_dir = .{ .override = .{ .custom = "esp" } },
     });