ide: start large-scale restructuring

4 files changed, 109 insertions, 0 deletions

diff --git a/kern/src/abort.cpp b/kern/src/abort.cpp
new file mode 100644
index 0000000..6db0b74
--- /dev/null
+++ b/kern/src/abort.cpp
@@ -0,0 +1,3 @@
+#include "kern/error.hpp"
+
+extern "C" [[noreturn]] auto abort() -> void { teachos::panic("Abort called"); }
diff --git a/kern/src/error.cpp b/kern/src/error.cpp
new file mode 100644
index 0000000..a5229fd
--- /dev/null
+++ b/kern/src/error.cpp
@@ -0,0 +1,19 @@
+#include "kern/error.hpp"
+
+#include "arch/system.hpp"
+#include "kern/print.hpp"
+
+namespace teachos
+{
+
+  auto panic(std::string_view message, std::source_location location) -> void
+  {
+    println_error("!!!Kernel Panic!!! ");
+    println_error(message);
+    println_error(location.file_name());
+    println_error(location.function_name());
+
+    arch::system::halt();
+  }
+
+}  // namespace teachos
diff --git a/kern/src/main.cpp b/kern/src/main.cpp
new file mode 100644
index 0000000..5e1b6ea
--- /dev/null
+++ b/kern/src/main.cpp
@@ -0,0 +1,11 @@
+#include "arch/io.hpp"
+#include "arch/memory.hpp"
+#include "kern/error.hpp"
+
+auto main() -> int
+{
+  teachos::arch::io::init();
+  teachos::arch::memory::init();
+
+  teachos::panic("Architecture specific main returned!");
+}
diff --git a/kern/src/print.cpp b/kern/src/print.cpp
new file mode 100644
index 0000000..64e2c65
--- /dev/null
+++ b/kern/src/print.cpp
@@ -0,0 +1,76 @@
+
+#include "kern/print.hpp"
+
+#include <string_view>
+
+namespace teachos
+{
+  namespace
+  {
+    print_handler * current_print_handler{};
+    println_handler * current_println_handler{};
+    print_handler * current_print_error_handler{};
+    println_handler * current_println_error_handler{};
+  }  // namespace
+
+  auto print(std::string_view text) -> void
+  {
+    if (current_print_handler)
+    {
+      current_print_handler(text);
+    }
+  }
+
+  auto println(std::string_view text) -> void
+  {
+    if (current_println_handler)
+    {
+      current_println_handler(text);
+    }
+  }
+
+  auto print_error(std::string_view text) -> void
+  {
+    if (current_print_error_handler)
+    {
+      current_print_error_handler(text);
+    }
+  }
+
+  auto println_error(std::string_view text) -> void
+  {
+    if (current_println_error_handler)
+    {
+      current_println_error_handler(text);
+    }
+  }
+
+  auto set_print_handler(print_handler handler) -> print_handler *
+  {
+    auto old = current_print_handler;
+    current_print_handler = handler;
+    return old;
+  }
+
+  auto set_println_handler(println_handler handler) -> print_handler *
+  {
+    auto old = current_println_handler;
+    current_println_handler = handler;
+    return old;
+  }
+
+  auto set_print_error_handler(print_handler handler) -> print_handler *
+  {
+    auto old = current_print_error_handler;
+    current_print_error_handler = handler;
+    return old;
+  }
+
+  auto set_println_error_handler(println_handler handler) -> print_handler *
+  {
+    auto old = current_println_error_handler;
+    current_println_error_handler = handler;
+    return old;
+  }
+
+}  // namespace teachos