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 #include <AsmMacroIoLib.h> 16 17 // 18 // A pair of (unsigned) long longs is returned in {{r0, r1}, {r2, r3}}, 19 // the quotient in {r0, r1}, and the remainder in {r2, r3}. 20 // 21 //__value_in_regs lldiv_t 22 //EFIAPI 23 //__aeabi_ldivmod ( 24 // IN UINT64 Dividen 25 // IN UINT64 Divisor 26 // )// 27 // 28 29 ASM_FUNC(__aeabi_ldivmod) 30 push {r4,lr} 31 asrs r4,r1,#1 32 eor r4,r4,r3,LSR #1 33 bpl L_Test1 34 rsbs r0,r0,#0 35 rsc r1,r1,#0 36 L_Test1: 37 tst r3,r3 38 bpl L_Test2 39 rsbs r2,r2,#0 40 rsc r3,r3,#0 41 L_Test2: 42 bl ASM_PFX(__aeabi_uldivmod) 43 tst r4,#0x40000000 44 beq L_Test3 45 rsbs r0,r0,#0 46 rsc r1,r1,#0 47 L_Test3: 48 tst r4,#0x80000000 49 beq L_Exit 50 rsbs r2,r2,#0 51 rsc r3,r3,#0 52 L_Exit: 53 pop {r4,pc} 54 55 56 57
