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-rw-r--r--sysdeps/sparc64/rshift.S93
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diff --git a/sysdeps/sparc64/rshift.S b/sysdeps/sparc64/rshift.S
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--- a/sysdeps/sparc64/rshift.S
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-/* SPARC v9 __mpn_rshift --
-
- Copyright (C) 1996 Free Software Foundation, Inc.
-
- This file is part of the GNU MP Library.
-
- The GNU MP Library is free software; you can redistribute it and/or modify
- it under the terms of the GNU Library General Public License as published by
- the Free Software Foundation; either version 2 of the License, or (at your
- option) any later version.
-
- The GNU MP Library 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 Library General Public
- License for more details.
-
- You should have received a copy of the GNU Library General Public License
- along with the GNU MP Library; see the file COPYING.LIB. If not, write to
- the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- MA 02111-1307, USA. */
-
-#include <sysdep.h>
-
-/* INPUT PARAMETERS
- res_ptr %i0
- src_ptr %i1
- size %i2
- cnt %i3 */
-
-ENTRY(__mpn_rshift)
- save %sp, -128, %sp
-
- ldx [%i1],%g2 ! load first limb
- sub %g0,%i3,%i5 ! negate shift count
- add %i2,-1,%i2
- and %i2,4-1,%l4 ! number of limbs in first loop
- sllx %g2,%i5,%g1 ! compute function result
- brz,pn %l4,.L0 ! if multiple of 4 limbs, skip first loop
- mov %g1,%l1
-
- sub %i2,%l4,%i2 ! adjust count for main loop
-
-.Loop0: ldx [%i1+8],%g3
- add %i0,8,%i0
- add %i1,8,%i1
- add %l4,-1,%l4
- srlx %g2,%i3,%i4
- sllx %g3,%i5,%g1
- mov %g3,%g2
- or %i4,%g1,%i4
- brnz,pt %l4,.Loop0
- stx %i4,[%i0-8]
-
-.L0: brz,pn %i2,.Lend
- nop
-
-.Loop: ldx [%i1+8],%g3
- add %i0,32,%i0
- add %i2,-4,%i2
- srlx %g2,%i3,%i4
- sllx %g3,%i5,%g1
-
- ldx [%i1+16],%g2
- srlx %g3,%i3,%l4
- or %i4,%g1,%i4
- stx %i4,[%i0-32]
- sllx %g2,%i5,%g1
-
- ldx [%i1+24],%g3
- srlx %g2,%i3,%i4
- or %l4,%g1,%l4
- stx %l4,[%i0-24]
- sllx %g3,%i5,%g1
-
- ldx [%i1+32],%g2
- srlx %g3,%i3,%l4
- or %i4,%g1,%i4
- stx %i4,[%i0-16]
- sllx %g2,%i5,%g1
-
- add %i1,32,%i1
- or %l4,%g1,%l4
- brnz %i2,.Loop
- stx %l4,[%i0-8]
-
-.Lend: srlx %g2,%i3,%g2
- stx %g2,[%i0-0]
-
- mov %l1,%i0
- jmpl %i7+8,%g0
- restore
-
-END(__mpn_rshift)