UefiCpuPkg: Move AsmRelocateApLoopStart from Mpfuncs.nasm to AmdSev.nasm

[mirror_edk2.git] / ArmPkg / Library / CompilerIntrinsicsLib / Arm / ldivmod.S

//------------------------------------------------------------------------------\r
//\r
// Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r
//\r
// SPDX-License-Identifier: BSD-2-Clause-Patent\r
//\r
//------------------------------------------------------------------------------\r
\r
#include <AsmMacroIoLib.h>\r
\r
//\r
// A pair of (unsigned) long longs is returned in {{r0, r1}, {r2, r3}},\r
//  the quotient in {r0, r1}, and the remainder in {r2, r3}.\r
//\r
//__value_in_regs lldiv_t\r
//EFIAPI\r
//__aeabi_ldivmod (\r
//  IN UINT64  Dividen\r
//  IN UINT64  Divisor\r
//  )//\r
//\r
\r
ASM_FUNC(__aeabi_ldivmod)\r
    push     {r4,lr}\r
    asrs     r4,r1,#1\r
    eor      r4,r4,r3,LSR #1\r
    bpl      L_Test1\r
    rsbs     r0,r0,#0\r
    rsc      r1,r1,#0\r
L_Test1:\r
    tst      r3,r3\r
    bpl      L_Test2\r
    rsbs     r2,r2,#0\r
    rsc      r3,r3,#0\r
L_Test2:\r
    bl       ASM_PFX(__aeabi_uldivmod)\r
    tst      r4,#0x40000000\r
    beq      L_Test3\r
    rsbs     r0,r0,#0\r
    rsc      r1,r1,#0\r
L_Test3:\r
    tst      r4,#0x80000000\r
    beq      L_Exit\r
    rsbs     r2,r2,#0\r
    rsc      r3,r3,#0\r
L_Exit:\r
    pop      {r4,pc}\r
\r
\r
\r