1//------------------------------------------------------------------------------
2//
3// Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
4//
5// This program and the accompanying materials
6// are licensed and made available under the terms and conditions of the BSD License
7// which accompanies this distribution.  The full text of the license may be found at
8// http://opensource.org/licenses/bsd-license.php
9//
10// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
12//
13//------------------------------------------------------------------------------
14
15
16  .text
17  .align 2
18  GCC_ASM_EXPORT(__aeabi_ldivmod)
19
20//
21// A pair of (unsigned) long longs is returned in {{r0, r1}, {r2, r3}},
22//  the quotient in {r0, r1}, and the remainder in {r2, r3}.
23//
24//__value_in_regs lldiv_t
25//EFIAPI
26//__aeabi_ldivmod (
27//  IN UINT64  Dividen
28//  IN UINT64  Divisor
29//  )//
30//
31
32ASM_PFX(__aeabi_ldivmod):
33    push     {r4,lr}
34    asrs     r4,r1,#1
35    eor      r4,r4,r3,LSR #1
36    bpl      L_Test1
37    rsbs     r0,r0,#0
38    rsc      r1,r1,#0
39L_Test1:
40    tst      r3,r3
41    bpl      L_Test2
42    rsbs     r2,r2,#0
43    rsc      r3,r3,#0
44L_Test2:
45    bl       ASM_PFX(__aeabi_uldivmod)
46    tst      r4,#0x40000000
47    beq      L_Test3
48    rsbs     r0,r0,#0
49    rsc      r1,r1,#0
50L_Test3:
51    tst      r4,#0x80000000
52    beq      L_Exit
53    rsbs     r2,r2,#0
54    rsc      r3,r3,#0
55L_Exit:
56    pop      {r4,pc}
57
58
59
60