Annotation of OpenXM/src/kan96xx/gmp-2.0.2-ssh-2/mpn/mips3/lshift.s, Revision 1.1
1.1 ! takayama 1: # MIPS3 __mpn_lshift --
! 2:
! 3: # Copyright (C) 1995 Free Software Foundation, Inc.
! 4:
! 5: # This file is part of the GNU MP Library.
! 6:
! 7: # The GNU MP Library is free software; you can redistribute it and/or modify
! 8: # it under the terms of the GNU Library General Public License as published by
! 9: # the Free Software Foundation; either version 2 of the License, or (at your
! 10: # option) any later version.
! 11:
! 12: # The GNU MP Library is distributed in the hope that it will be useful, but
! 13: # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
! 14: # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
! 15: # License for more details.
! 16:
! 17: # You should have received a copy of the GNU Library General Public License
! 18: # along with the GNU MP Library; see the file COPYING.LIB. If not, write to
! 19: # the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
! 20: # MA 02111-1307, USA.
! 21:
! 22:
! 23: # INPUT PARAMETERS
! 24: # res_ptr $4
! 25: # src_ptr $5
! 26: # size $6
! 27: # cnt $7
! 28:
! 29: .text
! 30: .align 2
! 31: .globl __mpn_lshift
! 32: .ent __mpn_lshift
! 33: __mpn_lshift:
! 34: .set noreorder
! 35: .set nomacro
! 36:
! 37: dsll $2,$6,3
! 38: daddu $5,$5,$2 # make r5 point at end of src
! 39: ld $10,-8($5) # load first limb
! 40: dsubu $13,$0,$7
! 41: daddu $4,$4,$2 # make r4 point at end of res
! 42: daddiu $6,$6,-1
! 43: and $9,$6,4-1 # number of limbs in first loop
! 44: beq $9,$0,.L0 # if multiple of 4 limbs, skip first loop
! 45: dsrl $2,$10,$13 # compute function result
! 46:
! 47: dsubu $6,$6,$9
! 48:
! 49: .Loop0: ld $3,-16($5)
! 50: daddiu $4,$4,-8
! 51: daddiu $5,$5,-8
! 52: daddiu $9,$9,-1
! 53: dsll $11,$10,$7
! 54: dsrl $12,$3,$13
! 55: move $10,$3
! 56: or $8,$11,$12
! 57: bne $9,$0,.Loop0
! 58: sd $8,0($4)
! 59:
! 60: .L0: beq $6,$0,.Lend
! 61: nop
! 62:
! 63: .Loop: ld $3,-16($5)
! 64: daddiu $4,$4,-32
! 65: daddiu $6,$6,-4
! 66: dsll $11,$10,$7
! 67: dsrl $12,$3,$13
! 68:
! 69: ld $10,-24($5)
! 70: dsll $14,$3,$7
! 71: or $8,$11,$12
! 72: sd $8,24($4)
! 73: dsrl $9,$10,$13
! 74:
! 75: ld $3,-32($5)
! 76: dsll $11,$10,$7
! 77: or $8,$14,$9
! 78: sd $8,16($4)
! 79: dsrl $12,$3,$13
! 80:
! 81: ld $10,-40($5)
! 82: dsll $14,$3,$7
! 83: or $8,$11,$12
! 84: sd $8,8($4)
! 85: dsrl $9,$10,$13
! 86:
! 87: daddiu $5,$5,-32
! 88: or $8,$14,$9
! 89: bgtz $6,.Loop
! 90: sd $8,0($4)
! 91:
! 92: .Lend: dsll $8,$10,$7
! 93: j $31
! 94: sd $8,-8($4)
! 95: .end __mpn_lshift
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