mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-30 12:43:41 +01:00
51 lines
1.1 KiB
ArmAsm
51 lines
1.1 KiB
ArmAsm
|
//------------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
|
||
|
|
//
|
||
|
|
// SPDX-License-Identifier: BSD-2-Clause-Patent
|
||
|
|
//
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
|
||
|
|
#include <AsmMacroIoLib.h>
|
||
|
|
|
||
|
|
//
|
||
|
|
// A pair of (unsigned) long longs is returned in {{r0, r1}, {r2, r3}},
|
||
|
|
// the quotient in {r0, r1}, and the remainder in {r2, r3}.
|
||
|
|
//
|
||
|
|
//__value_in_regs lldiv_t
|
||
|
|
//EFIAPI
|
||
|
|
//__aeabi_ldivmod (
|
||
|
|
// IN UINT64 Dividen
|
||
|
|
// IN UINT64 Divisor
|
||
|
|
// )//
|
||
|
|
//
|
||
|
|
|
||
|
|
ASM_FUNC(__aeabi_ldivmod)
|
||
|
|
push {r4,lr}
|
||
|
|
asrs r4,r1,#1
|
||
|
|
eor r4,r4,r3,LSR #1
|
||
|
|
bpl L_Test1
|
||
|
|
rsbs r0,r0,#0
|
||
|
|
rsc r1,r1,#0
|
||
|
|
L_Test1:
|
||
|
|
tst r3,r3
|
||
|
|
bpl L_Test2
|
||
|
|
rsbs r2,r2,#0
|
||
|
|
rsc r3,r3,#0
|
||
|
|
L_Test2:
|
||
|
|
bl ASM_PFX(__aeabi_uldivmod)
|
||
|
|
tst r4,#0x40000000
|
||
|
|
beq L_Test3
|
||
|
|
rsbs r0,r0,#0
|
||
|
|
rsc r1,r1,#0
|
||
|
|
L_Test3:
|
||
|
|
tst r4,#0x80000000
|
||
|
|
beq L_Exit
|
||
|
|
rsbs r2,r2,#0
|
||
|
|
rsc r3,r3,#0
|
||
|
|
L_Exit:
|
||
|
|
pop {r4,pc}
|
||
|
|
|
||
|
|
|
||
|
|
|