diff options
author | Guo Mang <mang.guo@intel.com> | 2016-12-22 15:57:14 +0800 |
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committer | Guo Mang <mang.guo@intel.com> | 2016-12-26 19:14:41 +0800 |
commit | 1760cf81e4b1847c6823ea3514a78dd120e19b6e (patch) | |
tree | 64a874b14050fe24d3bbc1bc13cd293abf8ae018 /Core/MdePkg/Library/BaseLib/X86FxSave.c | |
parent | 7f05fa00f73038b425002566d3afe6c3ade2ccdb (diff) | |
download | edk2-platforms-1760cf81e4b1847c6823ea3514a78dd120e19b6e.tar.xz |
MdePkg: Move to new location
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Guo Mang <mang.guo@intel.com>
Diffstat (limited to 'Core/MdePkg/Library/BaseLib/X86FxSave.c')
-rw-r--r-- | Core/MdePkg/Library/BaseLib/X86FxSave.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/Core/MdePkg/Library/BaseLib/X86FxSave.c b/Core/MdePkg/Library/BaseLib/X86FxSave.c new file mode 100644 index 0000000000..0a40bcc2c4 --- /dev/null +++ b/Core/MdePkg/Library/BaseLib/X86FxSave.c @@ -0,0 +1,48 @@ +/** @file
+ IA-32/x64 AsmFxSave()
+
+ Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php.
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+
+
+
+#include "BaseLibInternals.h"
+
+/**
+ Save the current floating point/SSE/SSE2 context to a buffer.
+
+ Saves the current floating point/SSE/SSE2 state to the buffer specified by
+ Buffer. Buffer must be aligned on a 16-byte boundary. This function is only
+ available on IA-32 and x64.
+
+ If Buffer is NULL, then ASSERT().
+ If Buffer is not aligned on a 16-byte boundary, then ASSERT().
+
+ @param Buffer A pointer to a buffer to save the floating point/SSE/SSE2 context.
+
+**/
+VOID
+EFIAPI
+AsmFxSave (
+ OUT IA32_FX_BUFFER *Buffer
+ )
+{
+ ASSERT (Buffer != NULL);
+ ASSERT (0 == ((UINTN)Buffer & 0xf));
+
+ InternalX86FxSave (Buffer);
+
+ //
+ // Mark one flag at end of Buffer, it will be check by AsmFxRestor()
+ //
+ *(UINT32 *) (&Buffer->Buffer[sizeof (Buffer->Buffer) - 4]) = 0xAA5555AA;
+}
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