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- ;
- ; logic.s -- an ACE linked library object file: logic functions.
- ; Copyright (C) 1998 David Benn
- ;
- ; This program is free software; you can redistribute it and/or
- ; modify it under the terms of the GNU General Public License
- ; as published by the Free Software Foundation; either version 2
- ; of the License, or (at your option) any later version.
- ;
- ; This program 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 General Public License for more details.
- ;
- ; You should have received a copy of the GNU General Public License
- ; along with this program; if not, write to the Free Software
- ; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- ;
- ; Author: David J Benn
- ; Date: 3rd-30th November, 1st-13th December 1991,
- ; 20th, 23rd,25th-27th January 1992,
- ; 2nd,4th,6th,12th-19th,21st-24th,29th February 1992,
- ; 1st,14th March 1992,
- ; 4th,7th,21st,22nd,26th April 1992,
- ; 2nd,3rd,5th,7th,8th,10th-17th May 1992,
- ; 6th,8th,11th,12th,28th,30th June 1992,
- ; 1st-3rd,13th,14th,18th-20th,22nd July 1992,
- ; 9th August 1992,
- ; 5th,8th December 1992
- ;
- ; a4,a5 are used by link/unlk.
- ; a6 is library base holder.
- ; a7 is stack pointer.
- ; d7 is used for array index calculations.
- ;
-
- ; logic functions
- xdef _impw
- xdef _impl
- xdef _eqvw
- xdef _eqvl
-
- SECTION logic_code,CODE
-
- ;*** LOGIC OPERATORS ***
-
- ;
- ; logical operator IMP: d0 = d1 imp d0
- ;
- _impw:
- not.w d1
- or.w d1,d0
- rts
-
- _impl:
- not.l d1
- or.l d1,d0
- rts
-
- ;
- ; logical operator EQV: d0 = d1 eqv d0
- ;
- _eqvw:
- eor.w d1,d0
- not.w d0
- rts
-
- _eqvl:
- eor.l d1,d0
- not.l d0
- rts
-
- END
-