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54a70131 | 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 | .globl ASM_PFX(__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 | ||
32 | ASM_PFX(__aeabi_ldivmod): | |
28d19165 | 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 | |
54a70131 | 39 | L_Test1: |
28d19165 | 40 | tst r3,r3 |
41 | bpl L_Test2 | |
42 | rsbs r2,r2,#0 | |
43 | rsc r3,r3,#0 | |
54a70131 | 44 | L_Test2: |
28d19165 | 45 | bl ASM_PFX(__aeabi_uldivmod) |
46 | tst r4,#0x40000000 | |
47 | beq L_Test3 | |
48 | rsbs r0,r0,#0 | |
49 | rsc r1,r1,#0 | |
54a70131 | 50 | L_Test3: |
28d19165 | 51 | tst r4,#0x80000000 |
52 | beq L_Exit | |
53 | rsbs r2,r2,#0 | |
54 | rsc r3,r3,#0 | |
54a70131 | 55 | L_Exit: |
28d19165 | 56 | pop {r4,pc} |
54a70131 | 57 | |
58 | ||
59 |