reactos/lib/ntdll/rtl/i386/allshr.s

   1 /* $Id$
   2  *
   3  * COPYRIGHT:         See COPYING in the top level directory
   4  * PROJECT:           ReactOS kernel
   5  * PURPOSE:           Math support for IA-32
   6  * FILE:              lib/ntdll/rtl/i386/allshr.s
   7  * PROGRAMER:         Eric Kohl (ekohl@rz-online.de)
   8  */
   9
  10 /*
  11  * long long
  12  * __allshr(long long Value, unsigned char Shift);
  13  *
  14  * Parameters:
  15  *   EDX:EAX - signed long long value to be shifted right
  16  *   CL      - number of bits to shift by
  17  * Registers:
  18  *   Destroys CL
  19  * Returns:
  20  *   EDX:EAX - shifted value
  21  */
  22 .globl __allshr
  23 __allshr:
  24         shrdl   %cl, %edx, %eax
  25         sarl    %cl, %edx
  26         andl    $32, %ecx
  27         je              L1
  28         movl    %edx, %eax
  29         sarl    $31, %edx
  30 L1:
  31         ret
  32
  33 /* EOF */