Add InOsEmuPkg. Like UnixPkg and Nt32Pkg, but EFI code can be common and does not...

[mirror_edk2.git] / InOsEmuPkg / Library / DxeEmuLib / DxeEmuLib.c

diff --git a/InOsEmuPkg/Library/DxeEmuLib/DxeEmuLib.c b/InOsEmuPkg/Library/DxeEmuLib/DxeEmuLib.c
new file mode 100644 (file)
index 0000000..79e9fbc
--- /dev/null
+++ b/InOsEmuPkg/Library/DxeEmuLib/DxeEmuLib.c
@@ -0,0 +1,52 @@
+/*++ @file\r
+\r
+Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r
+Portions copyright (c) 2011, Apple Inc. All rights reserved. \r
+This program and the accompanying materials\r
+are licensed and made available under the terms and conditions of the BSD License\r
+which accompanies this distribution.  The full text of the license may be found at\r
+http://opensource.org/licenses/bsd-license.php\r
+\r
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+**/\r
+\r
+#include <PiDxe.h>\r
+\r
+#include <Library/DebugLib.h>\r
+#include <Library/HobLib.h>\r
+#include <Library/EmuThunkLib.h>\r
+\r
+#include <Protocol/EmuThunk.h>\r
+\r
+\r
+EMU_THUNK_PROTOCOL   *gEmuThunk = NULL;\r
+\r
+\r
+/**\r
+  The constructor function caches the pointer of EMU Thunk protocol.\r
+\r
+  @param  ImageHandle   The firmware allocated handle for the EFI image.\r
+  @param  SystemTable   A pointer to the EFI System Table.\r
+\r
+  @retval EFI_SUCCESS   The constructor always returns EFI_SUCCESS.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+DxeEmuLibConstructor (\r
+  IN EFI_HANDLE        ImageHandle,\r
+  IN EFI_SYSTEM_TABLE  *SystemTable\r
+  )\r
+{\r
+  EFI_HOB_GUID_TYPE        *GuidHob;\r
+\r
+  GuidHob = GetFirstGuidHob (&gEmuThunkProtocolGuid);\r
+  ASSERT (GuidHob != NULL);\r
+  \r
+  gEmuThunk = (EMU_THUNK_PROTOCOL *)(*(UINTN *)(GET_GUID_HOB_DATA (GuidHob)));\r
+  ASSERT (gEmuThunk != NULL);\r
+  \r
+  return EFI_SUCCESS;\r
+}\r