1 /** @file 2 IA-32/x64 AsmFxSave() 3 4 Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR> 5 This program and the accompanying materials 6 are licensed and made available under the terms and conditions of the BSD License 7 which accompanies this distribution. The full text of the license may be found at 8 http://opensource.org/licenses/bsd-license.php. 9 10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 12 13 **/ 14 15 16 17 18 #include "BaseLibInternals.h" 19 20 /** 21 Save the current floating point/SSE/SSE2 context to a buffer. 22 23 Saves the current floating point/SSE/SSE2 state to the buffer specified by 24 Buffer. Buffer must be aligned on a 16-byte boundary. This function is only 25 available on IA-32 and x64. 26 27 If Buffer is NULL, then ASSERT(). 28 If Buffer is not aligned on a 16-byte boundary, then ASSERT(). 29 30 @param Buffer A pointer to a buffer to save the floating point/SSE/SSE2 context. 31 32 **/ 33 VOID 34 EFIAPI 35 AsmFxSave ( 36 OUT IA32_FX_BUFFER *Buffer 37 ) 38 { 39 ASSERT (Buffer != NULL); 40 ASSERT (0 == ((UINTN)Buffer & 0xf)); 41 42 InternalX86FxSave (Buffer); 43 44 // 45 // Mark one flag at end of Buffer, it will be check by AsmFxRestor() 46 // 47 *(UINT32 *) (&Buffer->Buffer[sizeof (Buffer->Buffer) - 4]) = 0xAA5555AA; 48 } 49
