Kernel: Many improvements done to the kernel and it's HAL and protocols.

Will implement BFileReader on next commit.

Signed-off-by: Amlal El Mahrouss <amlal.elmahrouss@icloud.com>

1 files changed, 93 insertions, 0 deletions

diff --git a/Private/KernelKit/PEFSharedObject.hxx b/Private/KernelKit/PEFSharedObject.hxx
new file mode 100644
index 00000000..af90858e
--- /dev/null
+++ b/Private/KernelKit/PEFSharedObject.hxx
@@ -0,0 +1,93 @@
+/*
+ *      ========================================================
+ *
+ *      HCore
+ *      Copyright Mahrouss Logic, all rights reserved.
+ *
+ *      ========================================================
+ */
+
+#ifndef __KERNELKIT_SHARED_OBJECT_HXX__
+#define __KERNELKIT_SHARED_OBJECT_HXX__
+
+#include <KernelKit/Loader.hpp>
+#include <KernelKit/PEF.hpp>
+#include <KernelKit/PEFCodeManager.hxx>
+#include <NewKit/Defines.hpp>
+
+namespace HCore {
+  /**
+   * @brief Shared Library class
+   * Load library from this class
+   */
+class SharedObject final {
+ public:
+  struct SharedObjectTraits final {
+    VoidPtr fImageObject;
+    VoidPtr fImageEntrypointOffset;
+  };
+
+ public:
+  explicit SharedObject() = default;
+  ~SharedObject() = default;
+
+ public:
+  HCORE_COPY_DEFAULT(SharedObject);
+
+ private:
+  SharedObjectTraits *fMounted{nullptr};
+
+ public:
+  SharedObjectTraits **GetAddressOf() { return &fMounted; }
+
+  SharedObjectTraits *Get() { return fMounted; }
+
+ public:
+  void Mount(SharedObjectTraits *to_mount) {
+    if (!to_mount ||
+        !to_mount->fImageObject)
+        return;
+
+    fMounted = to_mount;
+
+    if (fLoader && to_mount) {
+      delete fLoader;
+      fLoader = nullptr;
+    }
+
+    if (!fLoader) {
+      fLoader = new PEFLoader(fMounted->fImageObject);
+    }
+  }
+
+  void Unmount() {
+    if (fMounted) fMounted = nullptr;
+  };
+
+  template <typename SymbolType>
+  SymbolType Load(const char *symbol_name) {
+    auto ret = reinterpret_cast<SymbolType>(
+        fLoader->FindSymbol(symbol_name, kPefCode));
+
+    if (!ret)
+      ret = reinterpret_cast<SymbolType>(
+          fLoader->FindSymbol(symbol_name, kPefData));
+
+    if (!ret)
+      ret = reinterpret_cast<SymbolType>(
+          fLoader->FindSymbol(symbol_name, kPefZero));
+
+    return ret;
+  }
+
+ private:
+  PEFLoader *fLoader{nullptr};
+};
+
+inline void hcore_pure_call(void) {
+  // virtual placeholder.
+  return;
+}
+}  // namespace HCore
+
+#endif /* ifndef __KERNELKIT_SHARED_OBJECT_HXX__ */