Annotation of OpenXM_contrib/gmp/mpn/pa32/hppa1_1/pa7100/lshift.asm, Revision 1.1
1.1 ! ohara 1: dnl HP-PA mpn_lshift -- Shift a number left.
! 2: dnl Optimized for the PA7100, where is runs at 3.25 cycles/limb.
! 3:
! 4: dnl Copyright 1992, 1994, 2000, 2001, 2002 Free Software Foundation, Inc.
! 5:
! 6: dnl This file is part of the GNU MP Library.
! 7:
! 8: dnl The GNU MP Library is free software; you can redistribute it and/or modify
! 9: dnl it under the terms of the GNU Lesser General Public License as published
! 10: dnl by the Free Software Foundation; either version 2.1 of the License, or (at
! 11: dnl your option) any later version.
! 12:
! 13: dnl The GNU MP Library is distributed in the hope that it will be useful, but
! 14: dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
! 15: dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
! 16: dnl License for more details.
! 17:
! 18: dnl You should have received a copy of the GNU Lesser General Public License
! 19: dnl along with the GNU MP Library; see the file COPYING.LIB. If not, write to
! 20: dnl the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
! 21: dnl MA 02111-1307, USA.
! 22:
! 23: include(`../config.m4')
! 24:
! 25: C INPUT PARAMETERS
! 26: C res_ptr r26
! 27: C s_ptr r25
! 28: C size r24
! 29: C cnt r23
! 30:
! 31: ASM_START()
! 32: PROLOGUE(mpn_lshift)
! 33: sh2add %r24,%r25,%r25
! 34: sh2add %r24,%r26,%r26
! 35: ldws,mb -4(0,%r25),%r22
! 36: subi 32,%r23,%r1
! 37: mtsar %r1
! 38: addib,= -1,%r24,L(0004)
! 39: vshd %r0,%r22,%r28 C compute carry out limb
! 40: ldws,mb -4(0,%r25),%r29
! 41: addib,<= -5,%r24,L(rest)
! 42: vshd %r22,%r29,%r20
! 43:
! 44: .label L(loop)
! 45: ldws,mb -4(0,%r25),%r22
! 46: stws,mb %r20,-4(0,%r26)
! 47: vshd %r29,%r22,%r20
! 48: ldws,mb -4(0,%r25),%r29
! 49: stws,mb %r20,-4(0,%r26)
! 50: vshd %r22,%r29,%r20
! 51: ldws,mb -4(0,%r25),%r22
! 52: stws,mb %r20,-4(0,%r26)
! 53: vshd %r29,%r22,%r20
! 54: ldws,mb -4(0,%r25),%r29
! 55: stws,mb %r20,-4(0,%r26)
! 56: addib,> -4,%r24,L(loop)
! 57: vshd %r22,%r29,%r20
! 58:
! 59: .label L(rest)
! 60: addib,= 4,%r24,L(end1)
! 61: nop
! 62:
! 63: .label L(eloop)
! 64: ldws,mb -4(0,%r25),%r22
! 65: stws,mb %r20,-4(0,%r26)
! 66: addib,<= -1,%r24,L(end2)
! 67: vshd %r29,%r22,%r20
! 68: ldws,mb -4(0,%r25),%r29
! 69: stws,mb %r20,-4(0,%r26)
! 70: addib,> -1,%r24,L(eloop)
! 71: vshd %r22,%r29,%r20
! 72:
! 73: .label L(end1)
! 74: stws,mb %r20,-4(0,%r26)
! 75: vshd %r29,%r0,%r20
! 76: bv 0(%r2)
! 77: stw %r20,-4(0,%r26)
! 78:
! 79: .label L(end2)
! 80: stws,mb %r20,-4(0,%r26)
! 81:
! 82: .label L(0004)
! 83: vshd %r22,%r0,%r20
! 84: bv 0(%r2)
! 85: stw %r20,-4(0,%r26)
! 86: EPILOGUE()
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