1 files changed, 134 insertions, 0 deletions
diff --git a/HALKit/AMD64/CoreMultiProcessingAMD64.cpp b/HALKit/AMD64/CoreMultiProcessingAMD64.cpp
new file mode 100644
index 00000000..59812227
--- /dev/null
+++ b/HALKit/AMD64/CoreMultiProcessingAMD64.cpp
@@ -0,0 +1,134 @@
+/*
+ *	========================================================
+ *
+ *	hCore
+ * 	Copyright Mahrouss Logic, all rights reserved.
+ *
+ * 	========================================================
+ */
+
+#include <HALKit/AMD64/Processor.hpp>
+#include <HALKit/AMD64/ACPI/ACPIManager.hpp>
+
+///////////////////////////////////////////////////////////////////////////////////////
+
+//! NOTE: fGSI stands 'Field Global System Interrupt'
+
+namespace hCore::HAL
+{
+    constexpr Int32 kThreadAPIC = 0;
+    constexpr Int32 kThreadLAPIC = 1;
+    constexpr Int32 kThreadIOAPIC = 2;
+    constexpr Int32 kThreadAPIC64 = 3;
+    constexpr Int32 kThreadBoot = 4;
+
+    /*
+     *
+     * this is used to store info about the current running thread
+     * we use this struct to determine if we can use it, or mark it as used or on sleep.
+     *
+     */
+
+    struct ProcessorInfoAMD64 final
+    {
+        Int32 ThreadType;
+        UIntPtr JumpAddress;
+
+        struct
+        {
+            UInt32 Code;
+            UInt32 Data;
+            UInt32 BSS;
+        } Selector;
+    };
+
+    static voidPtr kApicMadt = nullptr;
+    static const char* kApicSignature = "APIC";
+
+    struct Madt final
+    {
+        char fMag[4];
+        Int32 fLength;
+        char fRev;
+        
+        struct MadtAddress final
+        {
+            UInt32 fPhysicalAddress;
+            UInt32 fFlags; // 1 = Dual Legacy PICs installed
+            
+            Char fType;
+            Char fRecLen; // record length
+        };
+    };
+
+    struct MadtProcessorLocalApic final
+    {
+        Char fProcessorId;
+        Char fApicId;
+        UInt32 fFlags;
+    };
+
+    struct MadtIOApic final
+    {
+        Char fApicId;
+        Char fReserved;
+        UInt32 fAddress;
+        UInt32 fSystemInterruptBase;
+    };
+
+    struct MadtInterruptSource final
+    {
+        Char fBusSource;
+        Char fIrqSource;
+        UInt32 fGSI;
+        UInt16 fFlags;	    
+    };
+
+    struct MadtInterruptNmi final
+    {
+        Char fNmiSource;
+        Char fReserved;
+        UInt16 fFlags;
+        UInt32 fGSI;	    
+    };
+
+    struct MadtLocalApicAddressOverride final { UInt16 fResvered; UIntPtr fAddress; };
+
+///////////////////////////////////////////////////////////////////////////////////////
+
+    static Madt kApicMadtList[256];
+
+    Madt* system_find_core(Madt* madt)
+    {
+        madt = madt + sizeof(Madt);
+
+        if (string_compare(madt->fMag, kApicSignature, string_length(kApicSignature)) == 0)
+            return madt;
+
+        return nullptr;
+    }
+
+///////////////////////////////////////////////////////////////////////////////////////
+
+    void system_get_cores(voidPtr rsdPtr)
+    {
+        auto acpi = ACPIManager(rsdPtr);
+        kApicMadt = acpi.Find(kApicSignature).Leak().Leak();
+
+        MUST_PASS(kApicMadt); // MADT must exist.
+
+        SizeT counter = 0UL;
+        Madt* offset = system_find_core((Madt*)kApicMadt);
+        //! now find core addresses.
+        while (offset != nullptr)
+        {
+            // calls rt_copy_memory in NewC++
+            kApicMadtList[counter] = *offset;
+            offset = system_find_core(offset);
+
+            ++counter;
+        }
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////////////