1 // This file is dual licensed under the MIT and the University of Illinois Open 2 // Source Licenses. See LICENSE.TXT for details. 3 4 #include "../assembly.h" 5 6 // di_int __muldi3(di_int a, di_int b); 7 8 #ifdef __i386__ 9 10 .text 11 .align 4 12 DEFINE_COMPILERRT_FUNCTION(__muldi3) 13 pushl %ebx 14 movl 16(%esp), %eax // b.lo 15 movl 12(%esp), %ecx // a.hi 16 imull %eax, %ecx // b.lo * a.hi 17 18 movl 8(%esp), %edx // a.lo 19 movl 20(%esp), %ebx // b.hi 20 imull %edx, %ebx // a.lo * b.hi 21 22 mull %edx // EDX:EAX = a.lo * b.lo 23 addl %ecx, %ebx // EBX = (a.lo*b.hi + a.hi*b.lo) 24 addl %ebx, %edx 25 26 popl %ebx 27 retl 28 29 #endif // __i386__ 30
