blob: a898e24146707cf37c03ef6ad8ffd62445e2891f (
plain) (
blame)
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
|
// 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"
// di_int __muldi3(di_int a, di_int b);
#ifdef __i386__
.text
.balign 4
DEFINE_COMPILERRT_FUNCTION(__muldi3)
pushl %ebx
movl 16(%esp), %eax // b.lo
movl 12(%esp), %ecx // a.hi
imull %eax, %ecx // b.lo * a.hi
movl 8(%esp), %edx // a.lo
movl 20(%esp), %ebx // b.hi
imull %edx, %ebx // a.lo * b.hi
mull %edx // EDX:EAX = a.lo * b.lo
addl %ecx, %ebx // EBX = (a.lo*b.hi + a.hi*b.lo)
addl %ebx, %edx
popl %ebx
retl
END_COMPILERRT_FUNCTION(__muldi3)
#endif // __i386__
NO_EXEC_STACK_DIRECTIVE
|
