1 ;------------------------------------------------------------------------------ 2 ; Return the current FPU rounding mode. 3 ; 4 ; MASM implementation of the flt_rounds function by: 5 ; J.T. Conklin, Apr 4, 1995 6 ; Public domain. 7 ; 8 ; Copyright (c) 2010, Intel Corporation. All rights reserved.<BR> 9 ; This program and the accompanying materials 10 ; are licensed and made available under the terms and conditions of the BSD License 11 ; which accompanies this distribution. The full text of the license may be found at 12 ; http://opensource.org/licenses/bsd-license.php. 13 ; 14 ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 15 ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 16 ; 17 ; NetBSD: flt_rounds.S,v 1.6 1999/08/23 08:45:09 kleink Exp 18 ;------------------------------------------------------------------------------ 19 20 .686 21 .model flat,C 22 .code 23 24 ;_map BYTE 1 ; round to nearest 25 ; BYTE 3 ; round to negative infinity 26 ; BYTE 2 ; round to positive infinity 27 ; BYTE 0 ; round to zero 28 29 ;------------------------------------------------------------------------------ 30 ; int 31 ; EFIAPI 32 ; fpu_rmode( void ); 33 ; 34 ;------------------------------------------------------------------------------ 35 36 internal_FPU_rmode PROC 37 sub esp, 4 ; Create a local variable for fnstcw 38 fnstcw [esp] 39 mov eax, [esp] 40 shr eax, 10 41 and eax, 3 42 add esp, 4 ; Delete the local variable 43 ret 44 internal_FPU_rmode ENDP 45 46 END 47
