1 /** @file 2 IA-32/x64 AsmFxRestore() 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 Restores the current floating point/SSE/SSE2 context from a buffer. 22 23 Restores the current floating point/SSE/SSE2 state from the buffer specified 24 by Buffer. Buffer must be aligned on a 16-byte boundary. This function is 25 only 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 If Buffer was not saved with AsmFxSave(), then ASSERT(). 30 31 @param Buffer A pointer to a buffer to save the floating point/SSE/SSE2 context. 32 33 **/ 34 VOID 35 EFIAPI 36 AsmFxRestore ( 37 IN CONST IA32_FX_BUFFER *Buffer 38 ) 39 { 40 ASSERT (Buffer != NULL); 41 ASSERT (0 == ((UINTN)Buffer & 0xf)); 42 43 // 44 // Check the flag recorded by AsmFxSave() 45 // 46 ASSERT (0xAA5555AA == *(UINT32 *) (&Buffer->Buffer[sizeof (Buffer->Buffer) - 4])); 47 48 InternalX86FxRestore (Buffer); 49 } 50
