Reorganisation of the source tree

[ghc-hetmet.git] / rts / gmp / mpn / hppa / hppa1_1 / pa7100 / sub_n.s

diff --git a/rts/gmp/mpn/hppa/hppa1_1/pa7100/sub_n.s b/rts/gmp/mpn/hppa/hppa1_1/pa7100/sub_n.s
new file mode 100644 (file)
index 0000000..0eec41c
--- /dev/null
+++ b/rts/gmp/mpn/hppa/hppa1_1/pa7100/sub_n.s
@@ -0,0 +1,76 @@
+; HP-PA  __gmpn_sub_n -- Subtract two limb vectors of the same length > 0 and
+; store difference in a third limb vector.
+; This is optimized for the PA7100, where is runs at 4.25 cycles/limb
+
+; Copyright (C) 1992, 1994, 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
+
+       .code
+       .export         __gmpn_sub_n
+__gmpn_sub_n
+       .proc
+       .callinfo       frame=0,no_calls
+       .entry
+
+       ldws,ma         4(0,%r25),%r20
+       ldws,ma         4(0,%r24),%r19
+
+       addib,<=        -5,%r23,L$rest
+        sub            %r20,%r19,%r28  ; subtract first limbs ignoring cy
+
+L$loop ldws,ma         4(0,%r25),%r20
+       ldws,ma         4(0,%r24),%r19
+       stws,ma         %r28,4(0,%r26)
+       subb            %r20,%r19,%r28
+       ldws,ma         4(0,%r25),%r20
+       ldws,ma         4(0,%r24),%r19
+       stws,ma         %r28,4(0,%r26)
+       subb            %r20,%r19,%r28
+       ldws,ma         4(0,%r25),%r20
+       ldws,ma         4(0,%r24),%r19
+       stws,ma         %r28,4(0,%r26)
+       subb            %r20,%r19,%r28
+       ldws,ma         4(0,%r25),%r20
+       ldws,ma         4(0,%r24),%r19
+       stws,ma         %r28,4(0,%r26)
+       addib,>         -4,%r23,L$loop
+       subb            %r20,%r19,%r28
+
+L$rest addib,=         4,%r23,L$end
+       nop
+L$eloop        ldws,ma         4(0,%r25),%r20
+       ldws,ma         4(0,%r24),%r19
+       stws,ma         %r28,4(0,%r26)
+       addib,>         -1,%r23,L$eloop
+       subb            %r20,%r19,%r28
+
+L$end  stws            %r28,0(0,%r26)
+       addc            %r0,%r0,%r28
+       bv              0(%r2)
+        subi           1,%r28,%r28
+
+       .exit
+       .procend