30 lines
622 B
ArmAsm
30 lines
622 B
ArmAsm
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
||
|
|
// Source Licenses. See LICENSE.TXT for details.
|
||
|
|
|
||
|
|
#include "../assembly.h"
|
||
|
|
|
||
|
|
// di_int __muldi3(di_int a, di_int b);
|
||
|
|
|
||
|
|
#ifdef __i386__
|
||
|
|
|
||
|
|
.text
|
||
|
|
.align 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
|
||
|
|
|
||
|
|
#endif // __i386__
|