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31 lines
626 B
31 lines
626 B
/*
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* Copyright 2007 Analog Devices Inc.
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*
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* Licensed under the ADI BSD license or the GPL-2 (or later)
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*/
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.align 2
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.global ___umulsi3_highpart;
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.type ___umulsi3_highpart, STT_FUNC;
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#ifdef CONFIG_ARITHMETIC_OPS_L1
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.section .l1.text
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#else
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.text
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#endif
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___umulsi3_highpart:
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R2 = R1.H * R0.H, R3 = R1.L * R0.H (FU);
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R0 = R1.L * R0.L, R1 = R1.H * R0.L (FU);
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R0 >>= 16;
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/* Unsigned multiplication has the nice property that we can
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ignore carry on this first addition. */
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R0 = R0 + R3;
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R0 = R0 + R1;
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cc = ac0;
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R1 = cc;
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R1 = PACK(R1.l,R0.h);
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R0 = R1 + R2;
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RTS;
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.size ___umulsi3_highpart, .-___umulsi3_highpart
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