diff options
author | vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524> | 2008-09-25 02:27:28 +0000 |
---|---|---|
committer | vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524> | 2008-09-25 02:27:28 +0000 |
commit | 5e7828f0f63c4fb3f887f9db9f94a8201d7bca96 (patch) | |
tree | 4bd689b8fe84fc075cb5ef5ef82cbe02c7f0e01f /MdePkg/Library/BaseLib/X86FxSave.c | |
parent | 9d4c3e8c7cf43dd83d10dafed3326f177917de83 (diff) | |
download | edk2-platforms-5e7828f0f63c4fb3f887f9db9f94a8201d7bca96.tar.xz |
Change name.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5971 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BaseLib/X86FxSave.c')
-rw-r--r-- | MdePkg/Library/BaseLib/X86FxSave.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/X86FxSave.c b/MdePkg/Library/BaseLib/X86FxSave.c new file mode 100644 index 0000000000..f6efa92c7e --- /dev/null +++ b/MdePkg/Library/BaseLib/X86FxSave.c @@ -0,0 +1,48 @@ +/** @file
+ IA-32/x64 AsmFxSave()
+
+ 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"
+
+/**
+ 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 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[sizeof (IA32_FX_BUFFER) - 4]) = 0xAA5555AA;
+}
|