diff options
Diffstat (limited to 'rts/gmp/mpn/powerpc64/add_n.asm')
| -rw-r--r-- | rts/gmp/mpn/powerpc64/add_n.asm | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/rts/gmp/mpn/powerpc64/add_n.asm b/rts/gmp/mpn/powerpc64/add_n.asm new file mode 100644 index 0000000000..c3325376dc --- /dev/null +++ b/rts/gmp/mpn/powerpc64/add_n.asm @@ -0,0 +1,61 @@ +# PowerPC-64 mpn_add_n -- Add two limb vectors of the same length > 0 and +# store sum in a third limb vector. + +# Copyright (C) 1999, 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 r3 +# s1_ptr r4 +# s2_ptr r5 +# size r6 + +include(`../config.m4') + +ASM_START() +PROLOGUE(mpn_add_n) + mtctr r6 # copy size into CTR + addic r0,r0,0 # clear cy + ld r8,0(r4) # load least significant s1 limb + ld r0,0(r5) # load least significant s2 limb + addi r3,r3,-8 # offset res_ptr, it's updated before it's used + bdz .Lend # If done, skip loop +.Loop: ld r9,8(r4) # load s1 limb + ld r10,8(r5) # load s2 limb + adde r7,r0,r8 # add limbs with cy, set cy + std r7,8(r3) # store result limb + bdz .Lexit # decrement CTR and exit if done + ldu r8,16(r4) # load s1 limb and update s1_ptr + ldu r0,16(r5) # load s2 limb and update s2_ptr + adde r7,r10,r9 # add limbs with cy, set cy + stdu r7,16(r3) # store result limb and update res_ptr + bdnz .Loop # decrement CTR and loop back + +.Lend: adde r7,r0,r8 + std r7,8(r3) # store ultimate result limb + li r3,0 # load cy into ... + addze r3,r3 # ... return value register + blr +.Lexit: adde r7,r10,r9 + std r7,16(r3) + li r3,0 # load cy into ... + addze r3,r3 # ... return value register + blr +EPILOGUE(mpn_add_n) |