implement basic heap and remap it

1 files changed, 27 insertions, 0 deletions

diff --git a/arch/x86_64/src/memory/heap/allocator.cpp b/arch/x86_64/src/memory/heap/allocator.cpp
new file mode 100644
index 0000000..c9ddd78
--- /dev/null
+++ b/arch/x86_64/src/memory/heap/allocator.cpp
@@ -0,0 +1,27 @@
+#include "arch/memory/heap/allocator.hpp"
+
+#include "arch/exception_handling/assert.hpp"
+
+namespace teachos::arch::memory::heap
+{
+  auto bump_allocator::allocate(std::size_t size) -> void *
+  {
+    // Uses some sort of alignment orignally:
+    // https://github.com/phil-opp/blog_os/blob/7f6576c9dc34e360b81236c54c25c7827fd6a2df/src/memory/heap_allocator.rs#L24
+    auto alloc_start = next;
+    auto alloc_end = next + size;
+
+    arch::exception_handling::assert(alloc_end <= heap_end, "[Heap Allocator] Out of memory!");
+
+    next = alloc_end;
+    return reinterpret_cast<void *>(alloc_start);
+  }
+
+  auto bump_allocator::deallocate(uint8_t * pointer, std::size_t size) -> void
+  {
+    // Memory leak
+    if (pointer || size)
+    {
+    }
+  }
+}  // namespace teachos::arch::memory::heap
\ No newline at end of file