ArmPkg/ArmHvcLibNull: Add NULL instance of ArmHvcLib

[mirror_edk2.git] / ArmPkg / Library / ArmHvcLibNull / ArmHvcLibNull.c

diff --git a/ArmPkg/Library/ArmHvcLibNull/ArmHvcLibNull.c b/ArmPkg/Library/ArmHvcLibNull/ArmHvcLibNull.c
new file mode 100644 (file)
index 0000000..8edda01
--- /dev/null
+++ b/ArmPkg/Library/ArmHvcLibNull/ArmHvcLibNull.c
@@ -0,0 +1,29 @@
+/** @file\r
+  Arm HyperVisor Call (HVC) Null Library.\r
+\r
+  Copyright (c) 2022, Arm Limited. All rights reserved.<BR>\r
+\r
+  SPDX-License-Identifier: BSD-2-Clause-Patent\r
+\r
+**/\r
+\r
+#include <Library/ArmHvcLib.h>\r
+#include <Library/DebugLib.h>\r
+\r
+/**\r
+  Trigger an HVC call\r
+\r
+  HVC calls can take up to 8 arguments and return up to 4 return values.\r
+  Therefore, the 4 first fields in the ARM_HVC_ARGS structure are used\r
+  for both input and output values.\r
+\r
+  @param [in,out]  Args    Arguments for the HVC call.\r
+**/\r
+VOID\r
+ArmCallHvc (\r
+  IN OUT ARM_HVC_ARGS  *Args\r
+  )\r
+{\r
+  ASSERT (FALSE);\r
+  return;\r
+}\r