1 files changed, 68 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/UefiCpuPkg/CpuDxe/CpuGdt.h b/src/VBox/Devices/EFI/Firmware/UefiCpuPkg/CpuDxe/CpuGdt.h
new file mode 100644
index 00000000..fa54e674
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/UefiCpuPkg/CpuDxe/CpuGdt.h
@@ -0,0 +1,68 @@
+/** @file
+  C based implementation of IA32 interrupt handling only
+  requiring a minimal assembly interrupt entry point.
+
+  Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef _CPU_GDT_H_
+#define _CPU_GDT_H_
+
+//
+// Local structure definitions
+//
+
+#pragma pack (1)
+
+//
+// Global Descriptor Entry structures
+//
+
+typedef struct _GDT_ENTRY {
+  UINT16 Limit15_0;
+  UINT16 Base15_0;
+  UINT8  Base23_16;
+  UINT8  Type;
+  UINT8  Limit19_16_and_flags;
+  UINT8  Base31_24;
+} GDT_ENTRY;
+
+typedef
+struct _GDT_ENTRIES {
+  GDT_ENTRY Null;
+  GDT_ENTRY Linear;
+  GDT_ENTRY LinearCode;
+  GDT_ENTRY SysData;
+  GDT_ENTRY SysCode;
+  GDT_ENTRY SysCode16;
+  GDT_ENTRY LinearData64;
+  GDT_ENTRY LinearCode64;
+  GDT_ENTRY Spare5;
+} GDT_ENTRIES;
+
+#pragma pack ()
+
+#define NULL_SEL          OFFSET_OF (GDT_ENTRIES, Null)
+#define LINEAR_SEL        OFFSET_OF (GDT_ENTRIES, Linear)
+#define LINEAR_CODE_SEL   OFFSET_OF (GDT_ENTRIES, LinearCode)
+#define SYS_DATA_SEL      OFFSET_OF (GDT_ENTRIES, SysData)
+#define SYS_CODE_SEL      OFFSET_OF (GDT_ENTRIES, SysCode)
+#define SYS_CODE16_SEL    OFFSET_OF (GDT_ENTRIES, SysCode16)
+#define LINEAR_DATA64_SEL OFFSET_OF (GDT_ENTRIES, LinearData64)
+#define LINEAR_CODE64_SEL OFFSET_OF (GDT_ENTRIES, LinearCode64)
+#define SPARE5_SEL        OFFSET_OF (GDT_ENTRIES, Spare5)
+
+#if defined (MDE_CPU_IA32)
+#define CPU_CODE_SEL LINEAR_CODE_SEL
+#define CPU_DATA_SEL LINEAR_SEL
+#elif defined (MDE_CPU_X64)
+#define CPU_CODE_SEL LINEAR_CODE64_SEL
+#define CPU_DATA_SEL LINEAR_DATA64_SEL
+#else
+#error CPU type not supported for CPU GDT initialization!
+#endif
+
+#endif // _CPU_GDT_H_
+