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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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4e07dba7cb
Replaced libgcc functions with asm optimized implementation. Signed-off-by: Michal Simek <monstr@monstr.eu>
29 lines
475 B
C
29 lines
475 B
C
#include <linux/module.h>
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#include "libgcc.h"
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long long __ashldi3(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.low = 0;
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w.s.high = (unsigned int) uu.s.low << -bm;
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} else {
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const unsigned int carries = (unsigned int) uu.s.low >> bm;
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w.s.low = (unsigned int) uu.s.low << b;
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w.s.high = ((unsigned int) uu.s.high << b) | carries;
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}
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return w.ll;
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}
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EXPORT_SYMBOL(__ashldi3);
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