2009-06-27 00:47:03 +08:00
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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2009-10-28 01:49:50 +08:00
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#include "../assembly.h"
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2009-06-27 00:47:03 +08:00
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// di_int __muldi3(di_int a, di_int b);
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#ifdef __i386__
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.text
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.align 4
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2009-10-28 01:50:21 +08:00
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DEFINE_COMPILERRT_FUNCTION(__muldi3)
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2009-06-27 00:47:03 +08:00
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pushl %ebx
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movl 16(%esp), %eax // b.lo
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movl 12(%esp), %ecx // a.hi
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imull %eax, %ecx // b.lo * a.hi
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movl 8(%esp), %edx // a.lo
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movl 20(%esp), %ebx // b.hi
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imull %edx, %ebx // a.lo * b.hi
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mull %edx // EDX:EAX = a.lo * b.lo
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addl %ecx, %ebx // EBX = (a.lo*b.hi + a.hi*b.lo)
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addl %ebx, %edx
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popl %ebx
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retl
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#endif // __i386__
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