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HP/PA specific MP add_n implementation.

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Ulrich Drepper 2000-10-15 03:17:46 +00:00
parent 12ffa85366
commit 472803265c
1 changed files with 34 additions and 34 deletions
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68
sysdeps/hppa/add_n.s
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@ -1,56 +1,56 @@
; HP-PA __mpn_add_n -- Add two limb vectors of the same length > 0 and store
; sum in a third limb vector.
;! HP-PA __mpn_add_n -- Add two limb vectors of the same length > 0 and store
;! sum in a third limb vector.
; Copyright (C) 1992, 1994 Free Software Foundation, Inc.
;! Copyright (C) 1992, 1994 Free Software Foundation, Inc.
; This file is part of the GNU MP Library.
;! 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 Library General Public License as published by
; the Free Software Foundation; either version 2 of the License, or (at your
; option) any later version.
;! The GNU MP Library is free software; you can redistribute it and/or modify
;! it under the terms of the GNU Library General Public License as published by
;! the Free Software Foundation; either version 2 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 Library General Public
; License for more details.
;! 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 Library General Public
;! License for more details.
; You should have received a copy of the GNU Library 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.
;! You should have received a copy of the GNU Library 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
;! 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.
;! 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
.text
.export __mpn_add_n
__mpn_add_n
__mpn_add_n:
.proc
.callinfo frame=0,no_calls
.entry
ldws,ma 4(0,%r25),%r20
ldws,ma 4(0,%r24),%r19
ldws,ma 4(0,%r25),%r21
ldws,ma 4(0,%r24),%r20
addib,= -1,%r23,L$end ; check for (SIZE == 1)
add %r20,%r19,%r28 ; add first limbs ignoring cy
addib,= -1,%r23,L$end ;! check for (SIZE == 1)
add %r21,%r20,%r28 ;! add first limbs ignoring cy
L$loop ldws,ma 4(0,%r25),%r20
ldws,ma 4(0,%r24),%r19
L$loop: ldws,ma 4(0,%r25),%r21
ldws,ma 4(0,%r24),%r20
stws,ma %r28,4(0,%r26)
addib,<> -1,%r23,L$loop
addc %r20,%r19,%r28
addc %r21,%r20,%r28
L$end stws %r28,0(0,%r26)
L$end: stws %r28,0(0,%r26)
bv 0(%r2)
addc %r0,%r0,%r28