1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
| //------------------------------------------------------------------------------
| //
| // 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}
|
|
|
|
|
