diff options
| author | vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524> | 2008-09-25 02:25:24 +0000 |
|---|---|---|
| committer | vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524> | 2008-09-25 02:25:24 +0000 |
| commit | 9d4c3e8c7cf43dd83d10dafed3326f177917de83 (patch) | |
| tree | ce3a84063666f57bbd39cd37d1609d91390edb8f /MdePkg/Library/BaseLib/X86FxRestore.c | |
| parent | b0cb767e89e279f5cdd2dc43e7044f6c7ebb2b81 (diff) | |
| download | edk2-platforms-9d4c3e8c7cf43dd83d10dafed3326f177917de83.tar.xz | |
Change name.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5970 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BaseLib/X86FxRestore.c')
| -rw-r--r-- | MdePkg/Library/BaseLib/X86FxRestore.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/X86FxRestore.c b/MdePkg/Library/BaseLib/X86FxRestore.c new file mode 100644 index 0000000000..ac6f472983 --- /dev/null +++ b/MdePkg/Library/BaseLib/X86FxRestore.c @@ -0,0 +1,49 @@ +/** @file
+ IA-32/x64 AsmFxRestore()
+
+ Copyright (c) 2006, Intel Corporation<BR>
+ All rights reserved. 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"
+
+/**
+ Restores the current floating point/SSE/SSE2 context from a buffer.
+
+ Restores the current floating point/SSE/SSE2 state from 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().
+ If Buffer was not saved with AsmFxSave(), then ASSERT().
+
+ @param Buffer Pointer to a buffer to save the floating point/SSE/SSE2 context.
+
+**/
+VOID
+EFIAPI
+AsmFxRestore (
+ IN CONST IA32_FX_BUFFER *Buffer
+ )
+{
+ ASSERT (Buffer != NULL);
+ ASSERT (0 == ((UINTN)Buffer & 0xf));
+
+ //
+ // Check the flag recorded by AsmFxSave()
+ //
+ ASSERT (0xAA5555AA == *(UINT32 *) (&Buffer[sizeof (IA32_FX_BUFFER) - 4]));
+
+ InternalX86FxRestore (Buffer);
+}
|