Reorganisation of the source tree

[ghc-hetmet.git] / rts / gmp / mpn / hppa / hppa2_0 / add_n.s

diff --git a/rts/gmp/mpn/hppa/hppa2_0/add_n.s b/rts/gmp/mpn/hppa/hppa2_0/add_n.s
new file mode 100644 (file)
index 0000000..6e97278
--- /dev/null
+++ b/rts/gmp/mpn/hppa/hppa2_0/add_n.s
@@ -0,0 +1,88 @@
+; HP-PA 2.0 32-bit __gmpn_add_n -- Add two limb vectors of the same length > 0
+; and store sum in a third limb vector.
+
+; Copyright (C) 1997, 1998, 2000 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 Lesser General Public License as published by
+; the Free Software Foundation; either version 2.1 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 Lesser General Public
+; License for more details.
+
+; You should have received a copy of the GNU Lesser General Public License
+; along with the GNU MP 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.
+
+
+; INPUT PARAMETERS
+; res_ptr      gr26
+; s1_ptr       gr25
+; s2_ptr       gr24
+; size         gr23
+
+; This runs at 2 cycles/limb on PA8000.
+
+       .code
+       .export __gmpn_add_n
+__gmpn_add_n
+       .proc
+       .callinfo frame=0,no_calls
+       .entry
+
+       sub             %r0,%r23,%r22
+       zdep            %r22,30,3,%r28          ; r28 = 2 * (-n & 7)
+       zdep            %r22,29,3,%r22          ; r22 = 4 * (-n & 7)
+       sub             %r25,%r22,%r25          ; offset s1_ptr
+       sub             %r24,%r22,%r24          ; offset s2_ptr
+       sub             %r26,%r22,%r26          ; offset res_ptr
+       blr             %r28,%r0                ; branch into loop
+       add             %r0,%r0,%r0             ; reset carry
+
+L$loop ldw             0(%r25),%r20
+       ldw             0(%r24),%r31
+       addc            %r20,%r31,%r20
+       stw             %r20,0(%r26)
+L$7    ldw             4(%r25),%r21
+       ldw             4(%r24),%r19
+       addc            %r21,%r19,%r21
+       stw             %r21,4(%r26)
+L$6    ldw             8(%r25),%r20
+       ldw             8(%r24),%r31
+       addc            %r20,%r31,%r20
+       stw             %r20,8(%r26)
+L$5    ldw             12(%r25),%r21
+       ldw             12(%r24),%r19
+       addc            %r21,%r19,%r21
+       stw             %r21,12(%r26)
+L$4    ldw             16(%r25),%r20
+       ldw             16(%r24),%r31
+       addc            %r20,%r31,%r20
+       stw             %r20,16(%r26)
+L$3    ldw             20(%r25),%r21
+       ldw             20(%r24),%r19
+       addc            %r21,%r19,%r21
+       stw             %r21,20(%r26)
+L$2    ldw             24(%r25),%r20
+       ldw             24(%r24),%r31
+       addc            %r20,%r31,%r20
+       stw             %r20,24(%r26)
+L$1    ldw             28(%r25),%r21
+       ldo             32(%r25),%r25
+       ldw             28(%r24),%r19
+       addc            %r21,%r19,%r21
+       stw             %r21,28(%r26)
+       ldo             32(%r24),%r24
+       addib,>         -8,%r23,L$loop
+       ldo             32(%r26),%r26
+
+       bv              (%r2)
+       .exit
+       addc            %r0,%r0,%r28
+       .procend