aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/m88k/m88110
diff options
context:
space:
mode:
authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /sysdeps/m88k/m88110
downloadglibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.tar
glibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.tar.gz
glibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.tar.bz2
glibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.zip
initial import
Diffstat (limited to 'sysdeps/m88k/m88110')
-rw-r--r--sysdeps/m88k/m88110/mul_1.S80
1 files changed, 80 insertions, 0 deletions
diff --git a/sysdeps/m88k/m88110/mul_1.S b/sysdeps/m88k/m88110/mul_1.S
new file mode 100644
index 0000000000..7a07623865
--- /dev/null
+++ b/sysdeps/m88k/m88110/mul_1.S
@@ -0,0 +1,80 @@
+; mc88110 __mpn_mul_1 -- Multiply a limb vector with a single limb and
+; store the product in a second limb vector.
+
+; Copyright (C) 1992, 1994 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 General Public License as published by
+; the Free Software Foundation; either version 2, 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 General Public License for more details.
+
+; You should have received a copy of the GNU General Public License
+; along with the GNU MP Library; see the file COPYING. If not, write to
+; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+
+; INPUT PARAMETERS
+; res_ptr r2
+; s1_ptr r3
+; size r4
+; s2_limb r5
+
+#include "sysdep.h"
+
+ENTRY (__mpn_mul_1)
+ ld r6,r3,0
+ sub r4,r0,r4
+ sub r3,r3,r4 ; r3 is offset s1_ptr
+ sub r2,r2,r4
+ sub r8,r2,8 ; r8 is offset res_ptr
+ mulu.d r10,r6,r5
+
+ addu r4,r4,1
+ bcnd eq0,r4,Lend
+ addu.co r2,r0,0 ; clear cy_limb
+
+Loop: ld r6,r3[r4]
+ addu.cio r9,r11,r2
+ or r2,r10,r0 ; could be avoided if unrolled
+ addu r4,r4,1
+ mulu.d r10,r6,r5
+ bcnd ne0,r4,Loop
+ st r9,r8[r4]
+
+Lend: addu.cio r9,r11,r2
+ st r9,r8,4
+ jmp.n r1
+ addu.ci r2,r10,r0
+
+; This is the Right Way to do this on '110. 4 cycles / 64-bit limb.
+; ld.d r10,
+; mulu.d
+; addu.cio
+; addu.cio
+; st.d
+; mulu.d ,r11,r5
+; ld.d r12,
+; mulu.d ,r10,r5
+; addu.cio
+; addu.cio
+; st.d
+; mulu.d
+; ld.d r10,
+; mulu.d
+; addu.cio
+; addu.cio
+; st.d
+; mulu.d
+; ld.d r10,
+; mulu.d
+; addu.cio
+; addu.cio
+; st.d
+; mulu.d