mirror of https://gitee.com/openkylin/linux.git
25 lines
430 B
C
25 lines
430 B
C
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#include "libgcc.h"
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DWtype
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__ashldi3(DWtype u, word_type b)
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{
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const DWunion uu = {.ll = u};
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const word_type bm = (sizeof (Wtype) * BITS_PER_UNIT) - b;
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DWunion w;
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if (b == 0)
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return u;
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if (bm <= 0) {
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w.s.low = 0;
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w.s.high = (UWtype) uu.s.low << -bm;
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} else {
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const UWtype carries = (UWtype) uu.s.low >> bm;
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w.s.low = (UWtype) uu.s.low << b;
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w.s.high = ((UWtype) uu.s.high << b) | carries;
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}
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return w.ll;
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}
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