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system76-edk2/ArmPkg/Library/CompilerIntrinsicsLib/Arm/lasr.asm
2019-04-09 09:10:21 -07:00

35 lines
713 B
NASM

//------------------------------------------------------------------------------
//
// Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
//
// SPDX-License-Identifier: BSD-2-Clause-Patent
//
//------------------------------------------------------------------------------
INCLUDE AsmMacroExport.inc
;
;UINT32
;EFIAPI
;__aeabi_lasr (
; IN UINT32 Dividen
; IN UINT32 Divisor
; );
;
RVCT_ASM_EXPORT __aeabi_lasr
SUBS r3,r2,#0x20
BPL {pc} + 0x18 ; 0x1c
RSB r3,r2,#0x20
LSR r0,r0,r2
ORR r0,r0,r1,LSL r3
ASR r1,r1,r2
BX lr
ASR r0,r1,r3
ASR r1,r1,#31
BX lr
END