diff options
Diffstat (limited to 'EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/x86FxSave.c')
-rw-r--r-- | EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/x86FxSave.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/x86FxSave.c b/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/x86FxSave.c new file mode 100644 index 0000000..4622ede --- /dev/null +++ b/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/x86FxSave.c @@ -0,0 +1,53 @@ +/*++ + +Copyright (c) 2004 - 2006, Intel Corporation +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. + + +Module Name: + + x86FxSave.c + +Abstract: + + IA-32/x64 specific functions. + +--*/ + +#include "BaseLibInternal.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 (((UINTN)Buffer & 0xf) == 0); + + InternalX86FxSave (Buffer); + + // + // Mark one flag at end of Buffer, it will be check by AsmFxRestor() + // + *(UINT32 *) (&Buffer[sizeof (IA32_FX_BUFFER) - 4]) = 0xAA5555AA; +} |