1 files changed, 47 insertions, 0 deletions
diff --git a/sysdeps/powerpc/mul_1.s b/sysdeps/powerpc/mul_1.s
new file mode 100644
index 0000000000..d6eb623bd4
--- /dev/null
+++ b/sysdeps/powerpc/mul_1.s
@@ -0,0 +1,47 @@
+ # Multiply a limb vector by a limb, for PowerPC.
+ # Copyright (C) 1993, 1994, 1995, 1997 Free Software Foundation, Inc.
+ # This file is part of the GNU C Library.
+ #
+ # The GNU C 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 C 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 C 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.
+
+ # mp_limb_t mpn_mul_1 (mp_ptr res_ptr, mp_srcptr s1_ptr,
+ #                      mp_size_t s1_size, mp_limb_t s2_limb)
+ # Calculate s1*s2 and put result in res_ptr; return carry.
+
+	.align 2
+	.globl __mpn_mul_1
+	.type	 __mpn_mul_1,@function
+
+__mpn_mul_1:
+	mtctr	%r5
+
+	lwz	%r0,0(%r4)
+	mullw	%r7,%r0,%r6
+	mulhwu	%r10,%r0,%r6
+	addi	%r3,%r3,-4		# adjust res_ptr
+	addic	%r5,%r5,0		# clear cy with dummy insn
+	bdz	Lend
+
+Loop:	lwzu	%r0,4(%r4)
+	stwu	%r7,4(%r3)
+	mullw	%r8,%r0,%r6
+	adde	%r7,%r8,%r10
+	mulhwu	%r10,%r0,%r6
+	bdnz	Loop
+
+Lend:	stw	%r7,4(%r3)
+	addze	%r3,%r10
+	blr