1 files changed, 66 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Library/DebugAgentLibNull/DebugAgentLibNull.c b/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Library/DebugAgentLibNull/DebugAgentLibNull.c
new file mode 100644
index 00000000..c059e48f
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Library/DebugAgentLibNull/DebugAgentLibNull.c
@@ -0,0 +1,66 @@
+/** @file
+  Debug Agent library implementition with empty functions.
+
+  Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Library/DebugAgentLib.h>
+
+/**
+  Initialize debug agent.
+
+  This function is used to set up debug environment to support source level debugging.
+  If certain Debug Agent Library instance has to save some private data in the stack,
+  this function must work on the mode that doesn't return to the caller, then
+  the caller needs to wrap up all rest of logic after InitializeDebugAgent() into one
+  function and pass it into InitializeDebugAgent(). InitializeDebugAgent() is
+  responsible to invoke the passing-in function at the end of InitializeDebugAgent().
+
+  If the parameter Function is not NULL, Debug Agent Library instance will invoke it by
+  passing in the Context to be its parameter.
+
+  If Function() is NULL, Debug Agent Library instance will return after setup debug
+  environment.
+
+  @param[in] InitFlag     Init flag is used to decide the initialize process.
+  @param[in] Context      Context needed according to InitFlag; it was optional.
+  @param[in] Function     Continue function called by debug agent library; it was
+                          optional.
+
+**/
+VOID
+EFIAPI
+InitializeDebugAgent (
+  IN UINT32                InitFlag,
+  IN VOID                  *Context, OPTIONAL
+  IN DEBUG_AGENT_CONTINUE  Function  OPTIONAL
+  )
+{
+  if (Function != NULL) {
+    Function (Context);
+  }
+}
+
+/**
+  Enable/Disable the interrupt of debug timer and return the interrupt state
+  prior to the operation.
+
+  If EnableStatus is TRUE, enable the interrupt of debug timer.
+  If EnableStatus is FALSE, disable the interrupt of debug timer.
+
+  @param[in] EnableStatus    Enable/Disable.
+
+  @return FALSE always.
+
+**/
+BOOLEAN
+EFIAPI
+SaveAndSetDebugTimerInterrupt (
+  IN BOOLEAN                EnableStatus
+  )
+{
+  return FALSE;
+}
+