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/Ia32/WriteMm4.c | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/edk2/MdePkg/Library/BaseLib/Ia32/WriteMm4.c')
| -rw-r--r-- | roms/edk2/MdePkg/Library/BaseLib/Ia32/WriteMm4.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/BaseLib/Ia32/WriteMm4.c b/roms/edk2/MdePkg/Library/BaseLib/Ia32/WriteMm4.c new file mode 100644 index 000000000..2fce55497 --- /dev/null +++ b/roms/edk2/MdePkg/Library/BaseLib/Ia32/WriteMm4.c @@ -0,0 +1,31 @@ +/** @file
+ AsmWriteMm4 function
+
+ Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+
+
+
+/**
+ Writes the current value of 64-bit MMX Register #4 (MM4).
+
+ Writes the current value of MM4. This function is only available on IA32 and
+ x64.
+
+ @param Value The 64-bit value to write to MM4.
+
+**/
+VOID
+EFIAPI
+AsmWriteMm4 (
+ IN UINT64 Value
+ )
+{
+ _asm {
+ movq mm4, qword ptr [Value]
+ emms
+ }
+}
|