Annotation of OpenXM/src/kan96xx/gmp-2.0.2-ssh-2/mpn/hppa/hppa1_1/pa7100/sub_n.s, Revision 1.1
1.1 ! takayama 1: ; HP-PA __mpn_sub_n -- Subtract two limb vectors of the same length > 0 and
! 2: ; store difference in a third limb vector.
! 3: ; This is optimized for the PA7100, where is runs at 4.25 cycles/limb
! 4:
! 5: ; Copyright (C) 1992, 1994 Free Software Foundation, Inc.
! 6:
! 7: ; This file is part of the GNU MP Library.
! 8:
! 9: ; The GNU MP Library is free software; you can redistribute it and/or modify
! 10: ; it under the terms of the GNU Library General Public License as published by
! 11: ; the Free Software Foundation; either version 2 of the License, or (at your
! 12: ; option) any later version.
! 13:
! 14: ; The GNU MP Library is distributed in the hope that it will be useful, but
! 15: ; WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
! 16: ; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
! 17: ; License for more details.
! 18:
! 19: ; You should have received a copy of the GNU Library General Public License
! 20: ; along with the GNU MP Library; see the file COPYING.LIB. If not, write to
! 21: ; the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
! 22: ; MA 02111-1307, USA.
! 23:
! 24:
! 25: ; INPUT PARAMETERS
! 26: ; res_ptr gr26
! 27: ; s1_ptr gr25
! 28: ; s2_ptr gr24
! 29: ; size gr23
! 30:
! 31: .code
! 32: .export __mpn_sub_n
! 33: __mpn_sub_n
! 34: .proc
! 35: .callinfo frame=0,no_calls
! 36: .entry
! 37:
! 38: ldws,ma 4(0,%r25),%r20
! 39: ldws,ma 4(0,%r24),%r19
! 40:
! 41: addib,<= -5,%r23,L$rest
! 42: sub %r20,%r19,%r28 ; subtract first limbs ignoring cy
! 43:
! 44: L$loop ldws,ma 4(0,%r25),%r20
! 45: ldws,ma 4(0,%r24),%r19
! 46: stws,ma %r28,4(0,%r26)
! 47: subb %r20,%r19,%r28
! 48: ldws,ma 4(0,%r25),%r20
! 49: ldws,ma 4(0,%r24),%r19
! 50: stws,ma %r28,4(0,%r26)
! 51: subb %r20,%r19,%r28
! 52: ldws,ma 4(0,%r25),%r20
! 53: ldws,ma 4(0,%r24),%r19
! 54: stws,ma %r28,4(0,%r26)
! 55: subb %r20,%r19,%r28
! 56: ldws,ma 4(0,%r25),%r20
! 57: ldws,ma 4(0,%r24),%r19
! 58: stws,ma %r28,4(0,%r26)
! 59: addib,> -4,%r23,L$loop
! 60: subb %r20,%r19,%r28
! 61:
! 62: L$rest addib,= 4,%r23,L$end
! 63: nop
! 64: L$eloop ldws,ma 4(0,%r25),%r20
! 65: ldws,ma 4(0,%r24),%r19
! 66: stws,ma %r28,4(0,%r26)
! 67: addib,> -1,%r23,L$eloop
! 68: subb %r20,%r19,%r28
! 69:
! 70: L$end stws %r28,0(0,%r26)
! 71: addc %r0,%r0,%r28
! 72: bv 0(%r2)
! 73: subi 1,%r28,%r28
! 74:
! 75: .exit
! 76: .procend
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