audk/MdePkg/Library/BaseLib/Ia32/DivU64x32Remainder.nasm
Michael D Kinney 9344f09215 MdePkg: Replace BSD License with BSD+Patent License
https://bugzilla.tianocore.org/show_bug.cgi?id=1373

Replace BSD 2-Clause License with BSD+Patent License.  This change is
based on the following emails:

  https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html
  https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html

RFCs with detailed process for the license change:

  V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html
  V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html
  V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
2019-04-09 10:58:13 -07:00

43 lines
1.4 KiB
NASM

;------------------------------------------------------------------------------
;
; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
; Module Name:
;
; DivError.asm
;
; Abstract:
;
; Set error flag for all division functions
;
;------------------------------------------------------------------------------
SECTION .text
;------------------------------------------------------------------------------
; UINT64
; EFIAPI
; InternalMathDivRemU64x32 (
; IN UINT64 Dividend,
; IN UINT32 Divisor,
; OUT UINT32 *Remainder
; );
;------------------------------------------------------------------------------
global ASM_PFX(InternalMathDivRemU64x32)
ASM_PFX(InternalMathDivRemU64x32):
mov ecx, [esp + 12] ; ecx <- divisor
mov eax, [esp + 8] ; eax <- dividend[32..63]
xor edx, edx
div ecx ; eax <- quotient[32..63], edx <- remainder
push eax
mov eax, [esp + 8] ; eax <- dividend[0..31]
div ecx ; eax <- quotient[0..31]
mov ecx, [esp + 20] ; ecx <- Remainder
jecxz .0 ; abandon remainder if Remainder == NULL
mov [ecx], edx
.0:
pop edx ; edx <- quotient[32..63]
ret