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Diffstat (limited to 'rts/gmp/mpn/hppa/sub_n.s')
| -rw-r--r-- | rts/gmp/mpn/hppa/sub_n.s | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/rts/gmp/mpn/hppa/sub_n.s b/rts/gmp/mpn/hppa/sub_n.s new file mode 100644 index 0000000000..8f770ad1ad --- /dev/null +++ b/rts/gmp/mpn/hppa/sub_n.s @@ -0,0 +1,59 @@ +; HP-PA __gmpn_sub_n -- Subtract two limb vectors of the same length > 0 and +; store difference in a third limb vector. + +; 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 + +; One might want to unroll this as for other processors, but it turns +; out that the data cache contention after a store makes such +; unrolling useless. We can't come under 5 cycles/limb anyway. + + .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,= -1,%r23,L$end ; check for (SIZE == 1) + sub %r20,%r19,%r28 ; subtract first limbs ignoring cy + +L$loop ldws,ma 4(0,%r25),%r20 + ldws,ma 4(0,%r24),%r19 + stws,ma %r28,4(0,%r26) + addib,<> -1,%r23,L$loop + subb %r20,%r19,%r28 + +L$end stws %r28,0(0,%r26) + addc %r0,%r0,%r28 + bv 0(%r2) + subi 1,%r28,%r28 + + .exit + .procend |