1 files changed, 95 insertions, 0 deletions
diff --git a/sysdeps/sparc/sparc64/lshift.s b/sysdeps/sparc/sparc64/lshift.s
new file mode 100644
index 0000000000..bd7fa0111f
--- /dev/null
+++ b/sysdeps/sparc/sparc64/lshift.s
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+! SPARC v9 __mpn_lshift --
+
+! 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+
+! INPUT PARAMETERS
+! res_ptr	%o0
+! src_ptr	%o1
+! size		%o2
+! cnt		%o3
+
+.section	".text"
+	.align 4
+	.global __mpn_lshift
+	.type	 __mpn_lshift,#function
+	.proc	04
+__mpn_lshift:
+	sllx	%o2,3,%g1
+	add	%o1,%g1,%o1	! make %o1 point at end of src
+	ldx	[%o1-8],%g2	! load first limb
+	sub	%g0,%o3,%o5	! negate shift count
+	add	%o0,%g1,%o0	! make %o0 point at end of res
+	add	%o2,-1,%o2
+	and	%o2,4-1,%g4	! number of limbs in first loop
+	srlx	%g2,%o5,%g1	! compute function result
+	brz,pn	%g4,.L0		! if multiple of 4 limbs, skip first loop
+	stx	%g1,[%sp+80]
+
+	sub	%o2,%g4,%o2	! adjust count for main loop
+
+.Loop0:	ldx	[%o1-16],%g3
+	add	%o0,-8,%o0
+	add	%o1,-8,%o1
+	add	%g4,-1,%g4
+	sllx	%g2,%o3,%o4
+	srlx	%g3,%o5,%g1
+	mov	%g3,%g2
+	or	%o4,%g1,%o4
+	brnz,pt	%g4,.Loop0
+	 stx	%o4,[%o0+0]
+
+.L0:	brz,pn	%o2,.Lend
+	 nop
+
+.Loop:	ldx	[%o1-16],%g3
+	add	%o0,-32,%o0
+	add	%o2,-4,%o2
+	sllx	%g2,%o3,%o4
+	srlx	%g3,%o5,%g1
+
+	ldx	[%o1-24],%g2
+	sllx	%g3,%o3,%g4
+	or	%o4,%g1,%o4
+	stx	%o4,[%o0+24]
+	srlx	%g2,%o5,%g1
+
+	ldx	[%o1-32],%g3
+	sllx	%g2,%o3,%o4
+	or	%g4,%g1,%g4
+	stx	%g4,[%o0+16]
+	srlx	%g3,%o5,%g1
+
+	ldx	[%o1-40],%g2
+	sllx	%g3,%o3,%g4
+	or	%o4,%g1,%o4
+	stx	%o4,[%o0+8]
+	srlx	%g2,%o5,%g1
+
+	add	%o1,-32,%o1
+	or	%g4,%g1,%g4
+	brnz,pt	%o2,.Loop
+	 stx	%g4,[%o0+0]
+
+.Lend:	sllx	%g2,%o3,%g2
+	stx	%g2,[%o0-8]
+	retl
+	ldx	[%sp+80],%o0
+.LLfe1:
+	.size	 __mpn_lshift,.LLfe1-__mpn_lshift