diff options
| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/edk2/MdePkg/Library/BaseLib/X64/WriteMsr64.c | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/edk2/MdePkg/Library/BaseLib/X64/WriteMsr64.c')
| -rw-r--r-- | roms/edk2/MdePkg/Library/BaseLib/X64/WriteMsr64.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/BaseLib/X64/WriteMsr64.c b/roms/edk2/MdePkg/Library/BaseLib/X64/WriteMsr64.c new file mode 100644 index 000000000..98c5458d8 --- /dev/null +++ b/roms/edk2/MdePkg/Library/BaseLib/X64/WriteMsr64.c @@ -0,0 +1,36 @@ +/** @file
+ CpuBreakpoint function.
+
+ Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+/**
+ Microsoft Visual Studio 7.1 Function Prototypes for I/O Intrinsics.
+**/
+
+void __writemsr (unsigned long Register, unsigned __int64 Value);
+
+#pragma intrinsic(__writemsr)
+
+/**
+ Write data to MSR.
+
+ @param Index The register index of MSR.
+ @param Value Data wants to be written.
+
+ @return Value written to MSR.
+
+**/
+UINT64
+EFIAPI
+AsmWriteMsr64 (
+ IN UINT32 Index,
+ IN UINT64 Value
+ )
+{
+ __writemsr (Index, Value);
+ return Value;
+}
+
|