diff options
Diffstat (limited to 'roms/edk2/MdePkg/Library/BaseLib/RiscV64/CpuPause.c')
-rw-r--r-- | roms/edk2/MdePkg/Library/BaseLib/RiscV64/CpuPause.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/BaseLib/RiscV64/CpuPause.c b/roms/edk2/MdePkg/Library/BaseLib/RiscV64/CpuPause.c new file mode 100644 index 000000000..9931bad29 --- /dev/null +++ b/roms/edk2/MdePkg/Library/BaseLib/RiscV64/CpuPause.c @@ -0,0 +1,29 @@ +/** @file
+ CPU pause for RISC-V
+
+ Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include "BaseLibInternals.h"
+
+extern VOID RiscVCpuPause (VOID);
+
+
+/**
+ Requests CPU to pause for a short period of time.
+
+ Requests CPU to pause for a short period of time. Typically used in MP
+ systems to prevent memory starvation while waiting for a spin lock.
+
+**/
+VOID
+EFIAPI
+CpuPause (
+ VOID
+ )
+{
+ RiscVCpuPause ();
+}
+
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