ldivmod.S revision 1.1
1 /* $NetBSD: ldivmod.S,v 1.1 2018/08/16 18:17:47 jmcneill Exp $ */ 2 3 //------------------------------------------------------------------------------ 4 // 5 // Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> 6 // 7 // This program and the accompanying materials 8 // are licensed and made available under the terms and conditions of the BSD License 9 // which accompanies this distribution. The full text of the license may be found at 10 // http://opensource.org/licenses/bsd-license.php 11 // 12 // THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 13 // WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 14 // 15 //------------------------------------------------------------------------------ 16 17 18 #include "edk2asm.h" 19 20 .text 21 .align 2 22 GCC_ASM_EXPORT(__aeabi_ldivmod) 23 24 // 25 // A pair of (unsigned) long longs is returned in {{r0, r1}, {r2, r3}}, 26 // the quotient in {r0, r1}, and the remainder in {r2, r3}. 27 // 28 //__value_in_regs lldiv_t 29 //EFIAPI 30 //__aeabi_ldivmod ( 31 // IN UINT64 Dividen 32 // IN UINT64 Divisor 33 // )// 34 // 35 36 ASM_PFX(__aeabi_ldivmod): 37 push {r4,lr} 38 asrs r4,r1,#1 39 eor r4,r4,r3,LSR #1 40 bpl L_Test1 41 rsbs r0,r0,#0 42 rsc r1,r1,#0 43 L_Test1: 44 tst r3,r3 45 bpl L_Test2 46 rsbs r2,r2,#0 47 rsc r3,r3,#0 48 L_Test2: 49 bl ASM_PFX(__aeabi_uldivmod) 50 tst r4,#0x40000000 51 beq L_Test3 52 rsbs r0,r0,#0 53 rsc r1,r1,#0 54 L_Test3: 55 tst r4,#0x80000000 56 beq L_Exit 57 rsbs r2,r2,#0 58 rsc r3,r3,#0 59 L_Exit: 60 pop {r4,pc} 61 62 63 64
Indexes created Mon Sep 29 21:09:56 GMT 2025