1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
| //===-- aeabi_uidivmod.S - EABI uidivmod implementation -------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "../assembly.h"
// struct { unsigned quot, unsigned rem}
// __aeabi_uidivmod(unsigned numerator, unsigned denominator) {
// unsigned rem, quot;
// quot = __udivmodsi4(numerator, denominator, &rem);
// return {quot, rem};
// }
#if defined(__MINGW32__)
#define __aeabi_uidivmod __rt_udiv
#endif
.syntax unified
.text
DEFINE_CODE_STATE
.p2align 2
DEFINE_COMPILERRT_FUNCTION(__aeabi_uidivmod)
#if defined(USE_THUMB_1)
cmp r0, r1
bcc LOCAL_LABEL(case_denom_larger)
push {r0, r1, lr}
bl SYMBOL_NAME(__aeabi_uidiv)
pop {r1, r2, r3}
muls r2, r0, r2 // r2 = quot * denom
subs r1, r1, r2
JMP (r3)
LOCAL_LABEL(case_denom_larger):
movs r1, r0
movs r0, #0
JMP (lr)
#else // defined(USE_THUMB_1)
push { lr }
sub sp, sp, #4
mov r2, sp
#if defined(__MINGW32__)
mov r3, r0
mov r0, r1
mov r1, r3
#endif
bl SYMBOL_NAME(__udivmodsi4)
ldr r1, [sp]
add sp, sp, #4
pop { pc }
#endif
END_COMPILERRT_FUNCTION(__aeabi_uidivmod)
NO_EXEC_STACK_DIRECTIVE
|