37 lines
681 B
C
37 lines
681 B
C
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/*
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* Copyright 2004-2009 Analog Devices Inc.
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*
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* Licensed under the GPL-2 or later.
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*/
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#include "gcclib.h"
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#ifdef CONFIG_ARITHMETIC_OPS_L1
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DItype __ashrdi3(DItype u, word_type b)__attribute__((l1_text));
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#endif
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DItype __ashrdi3(DItype u, word_type b)
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{
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DIunion w;
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word_type bm;
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DIunion uu;
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if (b == 0)
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return u;
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uu.ll = u;
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bm = (sizeof(SItype) * BITS_PER_UNIT) - b;
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if (bm <= 0) {
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/* w.s.high = 1..1 or 0..0 */
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w.s.high = uu.s.high >> (sizeof(SItype) * BITS_PER_UNIT - 1);
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w.s.low = uu.s.high >> -bm;
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} else {
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USItype carries = (USItype) uu.s.high << bm;
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w.s.high = uu.s.high >> b;
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w.s.low = ((USItype) uu.s.low >> b) | carries;
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}
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return w.ll;
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}
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