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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): |
| 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 |
| 39 | L_Test1: |
| 40 | TST r3,r3 |
| 41 | BPL L_Test2 |
| 42 | RSBS r2,r2,#0 |
| 43 | RSC r3,r3,#0 |
| 44 | L_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 |
| 50 | L_Test3: |
| 51 | TST r4,#0x80000000 |
| 52 | BEQ L_Exit |
| 53 | RSBS r2,r2,#0 |
| 54 | RSC r3,r3,#0 |
| 55 | L_Exit: |
| 56 | POP {r4,pc} |
| 57 | |
| 58 | |
| 59 | |
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