| // 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__ |
