[LV-kern-commit] CVS: kernel-2.4/arch/vax/lib lshrdi3.c,NONE,1.1 Makefile,1.5,1.6

[Dave A. <ai...@us...>]

Update of /cvsroot/linux-vax/kernel-2.4/arch/vax/lib
In directory usw-pr-cvs1:/tmp/cvs-serv27610

Modified Files:
	Makefile 
Added Files:
	lshrdi3.c 
Log Message:
lshrdi3 stolen from gcc libgcc2 


--- NEW FILE ---
/* lshrdi3.c extracted from gcc-2.7.2/libgcc2.c which is: */
/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.

This file is part of GNU CC.

GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING.  If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

#define BITS_PER_UNIT 8

typedef 	 int SItype	__attribute__ ((mode (SI)));
typedef unsigned int USItype	__attribute__ ((mode (SI)));
typedef		 int DItype	__attribute__ ((mode (DI)));
typedef int word_type __attribute__ ((mode (__word__)));

struct DIstruct {SItype high, low;};

typedef union
{
  struct DIstruct s;
  DItype ll;
} DIunion;


DItype
__lshrdi3 (DItype u, word_type b)
{
  DIunion w;
  word_type bm;
  DIunion uu;
  
  if (b == 0)
    return u;
  
  uu.ll = u;
  
  bm = (sizeof (SItype) * BITS_PER_UNIT) - b;
  if (bm <= 0)
    {
      w.s.high = 0;
      w.s.low = (USItype)uu.s.high >> -bm;
    }
  else
    {
      USItype carries = (USItype)uu.s.high << bm;
      w.s.high = (USItype)uu.s.high >> b;
      w.s.low = ((USItype)uu.s.low >> b) | carries;
    }
  
  return w.ll;
}

Index: Makefile
===================================================================
RCS file: /cvsroot/linux-vax/kernel-2.4/arch/vax/lib/Makefile,v
retrieving revision 1.5
retrieving revision 1.6
diff -u -r1.5 -r1.6
--- Makefile	2001/02/18 20:37:39	1.5
+++ Makefile	2001/02/25 00:37:31	1.6
@@ -10,7 +10,7 @@
 all: libio.a
 
 L_TARGET := libio.a
-obj-y   := string.o string_user.o console.o negdi.o checksum.o
+obj-y   := string.o string_user.o console.o negdi.o checksum.o lshrdi3.o
 
 include $(TOPDIR)/Rules.make