1 files changed, 97 insertions, 0 deletions
diff --git a/mpi/pa7100/mpih-lshift.S b/mpi/pa7100/mpih-lshift.S
new file mode 100644
index 0000000..55b48fa
--- /dev/null
+++ b/mpi/pa7100/mpih-lshift.S
@@ -0,0 +1,97 @@
+/* hppa   lshift
+ *	  optimized for the PA7100, where it runs at 3.25 cycles/limb
+ * 
+ *      Copyright (C) 1992, 1994, 1998, 
+ *                    2001 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG 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 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+ * USA.
+ */
+
+
+
+/*******************
+ * mpi_limb_t
+ * mpihelp_lshift( mpi_ptr_t wp,	(gr26)
+ *		   mpi_ptr_t up,	(gr25)
+ *		   mpi_size_t usize,	(gr24)
+ *		   unsigned cnt)	(gr23)
+ */
+
+	.code
+	.export 	mpihelp_lshift
+	.label		mpihelp_lshift
+	.proc
+	.callinfo	frame=64,no_calls
+	.entry
+
+	sh2add		%r24,%r25,%r25
+	sh2add		%r24,%r26,%r26
+	ldws,mb 	-4(0,%r25),%r22
+	subi		32,%r23,%r1
+	mtsar		%r1
+	addib,= 	-1,%r24,L$0004
+	vshd		%r0,%r22,%r28		; compute carry out limb
+	ldws,mb 	-4(0,%r25),%r29
+	addib,<=	-5,%r24,L$rest
+	vshd		%r22,%r29,%r20
+
+	.label	L$loop
+	ldws,mb 	-4(0,%r25),%r22
+	stws,mb 	%r20,-4(0,%r26)
+	vshd		%r29,%r22,%r20
+	ldws,mb 	-4(0,%r25),%r29
+	stws,mb 	%r20,-4(0,%r26)
+	vshd		%r22,%r29,%r20
+	ldws,mb 	-4(0,%r25),%r22
+	stws,mb 	%r20,-4(0,%r26)
+	vshd		%r29,%r22,%r20
+	ldws,mb 	-4(0,%r25),%r29
+	stws,mb 	%r20,-4(0,%r26)
+	addib,> 	-4,%r24,L$loop
+	vshd		%r22,%r29,%r20
+
+	.label	L$rest
+	addib,= 	4,%r24,L$end1
+	nop
+	.label	L$eloop
+	ldws,mb 	-4(0,%r25),%r22
+	stws,mb 	%r20,-4(0,%r26)
+	addib,<=	-1,%r24,L$end2
+	vshd		%r29,%r22,%r20
+	ldws,mb 	-4(0,%r25),%r29
+	stws,mb 	%r20,-4(0,%r26)
+	addib,> 	-1,%r24,L$eloop
+	vshd		%r22,%r29,%r20
+
+	.label	L$end1
+	stws,mb 	%r20,-4(0,%r26)
+	vshd		%r29,%r0,%r20
+	bv		0(%r2)
+	stw		%r20,-4(0,%r26)
+	.label	L$end2
+	stws,mb 	%r20,-4(0,%r26)
+	.label	L$0004
+	vshd		%r22,%r0,%r20
+	bv		0(%r2)
+	stw		%r20,-4(0,%r26)
+
+	.exit
+	.procend
+
+
+