1 files changed, 126 insertions, 0 deletions
diff --git a/mpi/mips3/mpih-sub1.S b/mpi/mips3/mpih-sub1.S
new file mode 100644
index 0000000..d23ff9b
--- /dev/null
+++ b/mpi/mips3/mpih-sub1.S
@@ -0,0 +1,126 @@
+/* mips3  sub_n -- Subtract two limb vectors of the same length > 0 and
+ *		  store difference in a third limb vector.
+ * 
+ *      Copyright (C) 1995, 1998, 1999, 2000,
+ *                    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_sub_n( mpi_ptr_t res_ptr,	(r4)
+ *		   mpi_ptr_t s1_ptr,	(r5)
+ *		   mpi_ptr_t s2_ptr,	(r6)
+ *		   mpi_size_t size)	(r7)
+ */
+
+
+	.text
+	.align	2
+	.globl	mpihelp_sub_n
+	.ent	mpihelp_sub_n
+mpihelp_sub_n:
+	.set	noreorder
+	.set	nomacro
+
+	ld	$10,0($5)
+	ld	$11,0($6)
+
+	daddiu	$7,$7,-1
+	and	$9,$7,4-1	# number of limbs in first loop
+	beq	$9,$0,.L0	# if multiple of 4 limbs, skip first loop
+	move   $2,$0
+
+	dsubu	$7,$7,$9
+
+.Loop0: daddiu	$9,$9,-1
+	ld	$12,8($5)
+	daddu	$11,$11,$2
+	ld	$13,8($6)
+	sltu	$8,$11,$2
+	dsubu	$11,$10,$11
+	sltu	$2,$10,$11
+	sd	$11,0($4)
+	or	$2,$2,$8
+
+	daddiu	$5,$5,8
+	daddiu	$6,$6,8
+	move	$10,$12
+	move	$11,$13
+	bne	$9,$0,.Loop0
+	 daddiu $4,$4,8
+
+.L0:	beq	$7,$0,.Lend
+	 nop
+
+.Loop:	daddiu	$7,$7,-4
+
+	ld	$12,8($5)
+	daddu	$11,$11,$2
+	ld	$13,8($6)
+	sltu	$8,$11,$2
+	dsubu	$11,$10,$11
+	sltu	$2,$10,$11
+	sd	$11,0($4)
+	or	$2,$2,$8
+
+	ld	$10,16($5)
+	daddu	$13,$13,$2
+	ld	$11,16($6)
+	sltu	$8,$13,$2
+	dsubu	$13,$12,$13
+	sltu	$2,$12,$13
+	sd	$13,8($4)
+	or	$2,$2,$8
+
+	ld	$12,24($5)
+	daddu	$11,$11,$2
+	ld	$13,24($6)
+	sltu	$8,$11,$2
+	dsubu	$11,$10,$11
+	sltu	$2,$10,$11
+	sd	$11,16($4)
+	or	$2,$2,$8
+
+	ld	$10,32($5)
+	daddu	$13,$13,$2
+	ld	$11,32($6)
+	sltu	$8,$13,$2
+	dsubu	$13,$12,$13
+	sltu	$2,$12,$13
+	sd	$13,24($4)
+	or	$2,$2,$8
+
+	daddiu	$5,$5,32
+	daddiu	$6,$6,32
+
+	bne	$7,$0,.Loop
+	 daddiu $4,$4,32
+
+.Lend:	daddu	$11,$11,$2
+	sltu	$8,$11,$2
+	dsubu	$11,$10,$11
+	sltu	$2,$10,$11
+	sd	$11,0($4)
+	j	$31
+	or	$2,$2,$8
+
+	.end	mpihelp_sub_n
+