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4e07dba7cb
Replaced libgcc functions with asm optimized implementation. Signed-off-by: Michal Simek <monstr@monstr.eu>
32 lines
499 B
C
32 lines
499 B
C
#include <linux/module.h>
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#include "libgcc.h"
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long long __ashrdi3(long long u, word_type b)
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{
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DWunion uu, w;
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word_type bm;
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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 = 32 - 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 =
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uu.s.high >> 31;
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w.s.low = uu.s.high >> -bm;
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} else {
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const unsigned int carries = (unsigned int) uu.s.high << bm;
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w.s.high = uu.s.high >> b;
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w.s.low = ((unsigned int) uu.s.low >> b) | carries;
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}
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return w.ll;
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}
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EXPORT_SYMBOL(__ashrdi3);
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