MdePkg/BaseLib: Introduce new SpeculationBarrier API

[mirror_edk2.git] / MdePkg / Library / BaseLib / Ebc / SpeculationBarrier.c

diff --git a/MdePkg/Library/BaseLib/Ebc/SpeculationBarrier.c b/MdePkg/Library/BaseLib/Ebc/SpeculationBarrier.c
new file mode 100644 (file)
index 0000000..8fa4c20
--- /dev/null
+++ b/MdePkg/Library/BaseLib/Ebc/SpeculationBarrier.c
@@ -0,0 +1,30 @@
+/** @file\r
+  SpeculationBarrier() function for EBC.\r
+\r
+  Copyright (C) 2018, Intel Corporation. All rights reserved.<BR>\r
+\r
+  This program and the accompanying materials are licensed and made available\r
+  under the terms and conditions of the BSD License which accompanies this\r
+  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, WITHOUT\r
+  WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+**/\r
+\r
+\r
+/**\r
+  Uses as a barrier to stop speculative execution.\r
+\r
+  Ensures that no later instruction will execute speculatively, until all prior\r
+  instructions have completed.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+SpeculationBarrier (\r
+  VOID\r
+  )\r
+{\r
+}\r