Merge branch 'develop-BA-FS26' into 'develop'HEADdevelop

Merge of BA-FS26 branch into develop

See merge request teachos/kernel!49

1 files changed, 52 insertions, 0 deletions

diff --git a/kernel/src/test_support/kapi/cpu.cpp b/kernel/src/test_support/kapi/cpu.cpp
new file mode 100644
index 0000000..5d95633
--- /dev/null
+++ b/kernel/src/test_support/kapi/cpu.cpp
@@ -0,0 +1,52 @@
+#include <kernel/test_support/cpu.hpp>
+
+#include <kapi/cpu.hpp>
+
+#include <atomic>
+#include <stdexcept>
+
+namespace
+{
+  auto static initialized = std::atomic_flag{};
+}
+
+namespace kapi::cpu
+{
+
+  auto init() -> void
+  {
+    if (initialized.test_and_set())
+    {
+      throw std::logic_error("kapi::cpu::init() called more than once");
+    }
+
+    // TODO: make sure that simulated interrupt can run.
+  }
+
+  auto halt() -> void
+  {
+    throw kernel::tests::cpu::halt{};
+  }
+
+  auto discover_topology() -> bool
+  {
+    // TODO: implement more meaningful simulated CPU topology discovery
+    return true;
+  }
+
+}  // namespace kapi::cpu
+
+namespace kernel::tests::cpu
+{
+
+  auto deinit() -> void
+  {
+    if (!initialized.test())
+    {
+      throw std::logic_error{"kapi::cpu::reset() called before kapi::cpu::init()"};
+    }
+
+    initialized.clear();
+  }
+
+}  // namespace kernel::tests::cpu
\ No newline at end of file