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kernel/linux-imx6_3.14.28/arch/sh/lib/ashrdi3.c 499 Bytes
6b13f685e   김민수   BSP 최초 추가
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  #include <linux/module.h>
  
  #include "libgcc.h"
  
  long long __ashrdi3(long long u, word_type b)
  {
  	DWunion uu, w;
  	word_type bm;
  
  	if (b == 0)
  		return u;
  
  	uu.ll = u;
  	bm = 32 - b;
  
  	if (bm <= 0) {
  		/* w.s.high = 1..1 or 0..0 */
  		w.s.high =
  		    uu.s.high >> 31;
  		w.s.low = uu.s.high >> -bm;
  	} else {
  		const unsigned int carries = (unsigned int) uu.s.high << bm;
  
  		w.s.high = uu.s.high >> b;
  		w.s.low = ((unsigned int) uu.s.low >> b) | carries;
  	}
  
  	return w.ll;
  }
  
  EXPORT_SYMBOL(__ashrdi3);