1//===-- aeabi_uldivmod.S - EABI uldivmod implementation -------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "../assembly.h"
10
11// struct { uint64_t quot, uint64_t rem}
12// __aeabi_uldivmod(uint64_t numerator, uint64_t denominator) {
13// uint64_t rem, quot;
14// quot = __udivmoddi4(numerator, denominator, &rem);
15// return {quot, rem};
16// }
17
18#if defined(__MINGW32__)
19#define __aeabi_uldivmod __rt_udiv64
20#endif
21
22 .syntax unified
23 .p2align 2
24DEFINE_COMPILERRT_FUNCTION(__aeabi_uldivmod)
25 PACBTI_LANDING
26#if defined(__ARM_FEATURE_PAC_DEFAULT)
27 push {r6, r12, lr}
28#else
29 push {r6, lr}
30#endif
31 sub sp, sp, #16
32 add r6, sp, #8
33 str r6, [sp]
34#if defined(__MINGW32__)
35 movs r6, r0
36 movs r0, r2
37 movs r2, r6
38 movs r6, r1
39 movs r1, r3
40 movs r3, r6
41#endif
42 bl SYMBOL_NAME(__udivmoddi4)
43 ldr r2, [sp, #8]
44 ldr r3, [sp, #12]
45 add sp, sp, #16
46#if defined(__ARM_FEATURE_PAC_DEFAULT)
47 pop {r6, r12, lr}
48 bxaut r12, lr, sp
49#else
50 pop {r6, pc}
51#endif
52END_COMPILERRT_FUNCTION(__aeabi_uldivmod)
53
54NO_EXEC_STACK_DIRECTIVE
55
56

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source code of compiler-rt/lib/builtins/arm/aeabi_uldivmod.S