Migrate MM subsystem to C++

xtoskrnl/mm/kpool.cc

@@ -0,0 +1,119 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtoskrnl/mm/kpool.cc
+ * DESCRIPTION:     Kernel pool memory management
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <xtos.hh>
+
+
+/**
+ * Allocates a new kernel stack.
+ *
+ * @param Stack
+ *        Supplies a pointer to the memory area that will contain a new kernel stack.
+ *
+ * @param LargeStack
+ *        Determines whether the stack is large or small.
+ *
+ * @param SystemNode
+ *        Specifies a preferred node used for new stack on multi-processor systems.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTAPI
+XTSTATUS
+MM::KernelPool::AllocateKernelStack(IN PVOID *Stack,
+                                    IN BOOLEAN LargeStack,
+                                    IN UCHAR SystemNode)
+{
+    UNIMPLEMENTED;
+    return STATUS_NOT_IMPLEMENTED;
+}
+
+/**
+ * Allocates a buffer for structures needed by a processor and assigns it to a corresponding CPU.
+ *
+ * @param CpuNumber
+ *        Specifies the zero-indexed CPU number as an owner of the allocated structures.
+ *
+ * @param StructuresData
+ *        Supplies a pointer to the memory area that will contain the allocated buffer.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTAPI
+XTSTATUS
+MM::KernelPool::AllocateProcessorStructures(IN ULONG CpuNumber,
+                                            OUT PVOID *StructuresData)
+{
+    PKPROCESSOR_BLOCK ProcessorBlock;
+    PVOID ProcessorStructures;
+    UINT_PTR Address;
+
+    /* Not implemented yet, this is just a hack */
+    UNIMPLEMENTED;
+
+    /* Assign memory for processor structures from preallocated buffer */
+    ProcessorStructures = &ProcessorStructuresData[CpuNumber - 1];
+
+    /* Make sure all structures are zeroed */
+    RTL::Memory::ZeroMemory(ProcessorStructures, KPROCESSOR_STRUCTURES_SIZE);
+
+    /* Align address to page size boundary and find a space for processor block */
+    Address = ROUND_UP((UINT_PTR)ProcessorStructures, MM_PAGE_SIZE);
+    ProcessorBlock = (PKPROCESSOR_BLOCK)((PUCHAR)Address + (2 * KERNEL_STACK_SIZE) + sizeof(ArInitialGdt));
+
+    /* Store processor number in the processor block */
+    ProcessorBlock->CpuNumber = CpuNumber;
+
+    /* Return pointer to the processor structures */
+    *StructuresData = ProcessorStructures;
+
+    /* Return success */
+    return STATUS_SUCCESS;
+}
+
+/**
+ * Destroys a kernel stack and frees page table entry.
+ *
+ * @param Stack
+ *        Supplies a pointer to the memory area containing a kernel stack.
+ *
+ * @param LargeStack
+ *        Determines whether the stack is large or small.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTAPI
+VOID
+MM::KernelPool::FreeKernelStack(IN PVOID Stack,
+                                IN BOOLEAN LargeStack)
+{
+    UNIMPLEMENTED;
+}
+
+/**
+ * Destroys an unused set of processor structures.
+ *
+ * @param StructuresData
+ *        Supplies a pointer to the memory area containing the allocated buffer.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTAPI
+VOID
+MM::KernelPool::FreeProcessorStructures(IN PVOID StructuresData)
+{
+    UNIMPLEMENTED;
+}