xchg.py revision 7087
15081Sgblack@eecs.umich.edu# Copyright (c) 2007 The Hewlett-Packard Development Company 25081Sgblack@eecs.umich.edu# All rights reserved. 35081Sgblack@eecs.umich.edu# 47087Snate@binkert.org# The license below extends only to copyright in the software and shall 57087Snate@binkert.org# not be construed as granting a license to any other intellectual 67087Snate@binkert.org# property including but not limited to intellectual property relating 77087Snate@binkert.org# to a hardware implementation of the functionality of the software 87087Snate@binkert.org# licensed hereunder. You may use the software subject to the license 97087Snate@binkert.org# terms below provided that you ensure that this notice is replicated 107087Snate@binkert.org# unmodified and in its entirety in all distributions of the software, 117087Snate@binkert.org# modified or unmodified, in source code or in binary form. 125081Sgblack@eecs.umich.edu# 137087Snate@binkert.org# Redistribution and use in source and binary forms, with or without 147087Snate@binkert.org# modification, are permitted provided that the following conditions are 157087Snate@binkert.org# met: redistributions of source code must retain the above copyright 167087Snate@binkert.org# notice, this list of conditions and the following disclaimer; 177087Snate@binkert.org# redistributions in binary form must reproduce the above copyright 187087Snate@binkert.org# notice, this list of conditions and the following disclaimer in the 197087Snate@binkert.org# documentation and/or other materials provided with the distribution; 207087Snate@binkert.org# neither the name of the copyright holders nor the names of its 215081Sgblack@eecs.umich.edu# contributors may be used to endorse or promote products derived from 227087Snate@binkert.org# this software without specific prior written permission. 235081Sgblack@eecs.umich.edu# 245081Sgblack@eecs.umich.edu# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 255081Sgblack@eecs.umich.edu# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 265081Sgblack@eecs.umich.edu# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 275081Sgblack@eecs.umich.edu# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 285081Sgblack@eecs.umich.edu# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 295081Sgblack@eecs.umich.edu# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 305081Sgblack@eecs.umich.edu# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 315081Sgblack@eecs.umich.edu# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 325081Sgblack@eecs.umich.edu# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 335081Sgblack@eecs.umich.edu# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 345081Sgblack@eecs.umich.edu# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 355081Sgblack@eecs.umich.edu# 365081Sgblack@eecs.umich.edu# Authors: Gabe Black 375081Sgblack@eecs.umich.edu 385081Sgblack@eecs.umich.edumicrocode = ''' 395081Sgblack@eecs.umich.edu 405081Sgblack@eecs.umich.edu# All the memory versions need to use LOCK, regardless of if it was set 415081Sgblack@eecs.umich.edu 425081Sgblack@eecs.umich.edudef macroop XCHG_R_R 435081Sgblack@eecs.umich.edu{ 445081Sgblack@eecs.umich.edu # Use the xor trick instead of moves to reduce register pressure. 455081Sgblack@eecs.umich.edu # This probably doesn't make much of a difference, but it's easy. 465081Sgblack@eecs.umich.edu xor reg, reg, regm 475081Sgblack@eecs.umich.edu xor regm, regm, reg 485081Sgblack@eecs.umich.edu xor reg, reg, regm 495081Sgblack@eecs.umich.edu}; 505081Sgblack@eecs.umich.edu 515081Sgblack@eecs.umich.edudef macroop XCHG_R_M 525081Sgblack@eecs.umich.edu{ 535119Sgblack@eecs.umich.edu ldst t1, seg, sib, disp 545081Sgblack@eecs.umich.edu st reg, seg, sib, disp 555081Sgblack@eecs.umich.edu mov reg, reg, t1 565081Sgblack@eecs.umich.edu}; 575081Sgblack@eecs.umich.edu 585081Sgblack@eecs.umich.edudef macroop XCHG_R_P 595081Sgblack@eecs.umich.edu{ 605081Sgblack@eecs.umich.edu rdip t7 615119Sgblack@eecs.umich.edu ldst t1, seg, riprel, disp 625081Sgblack@eecs.umich.edu st reg, seg, riprel, disp 635081Sgblack@eecs.umich.edu mov reg, reg, t1 645081Sgblack@eecs.umich.edu}; 655081Sgblack@eecs.umich.edu 665081Sgblack@eecs.umich.edudef macroop XCHG_M_R 675081Sgblack@eecs.umich.edu{ 685119Sgblack@eecs.umich.edu ldst t1, seg, sib, disp 695081Sgblack@eecs.umich.edu st reg, seg, sib, disp 705081Sgblack@eecs.umich.edu mov reg, reg, t1 715081Sgblack@eecs.umich.edu}; 725081Sgblack@eecs.umich.edu 735081Sgblack@eecs.umich.edudef macroop XCHG_P_R 745081Sgblack@eecs.umich.edu{ 755081Sgblack@eecs.umich.edu rdip t7 765119Sgblack@eecs.umich.edu ldst t1, seg, riprel, disp 775081Sgblack@eecs.umich.edu st reg, seg, riprel, disp 785081Sgblack@eecs.umich.edu mov reg, reg, t1 795081Sgblack@eecs.umich.edu}; 806088Sgblack@eecs.umich.edu 816088Sgblack@eecs.umich.edudef macroop XCHG_LOCKED_M_R 826088Sgblack@eecs.umich.edu{ 836088Sgblack@eecs.umich.edu ldstl t1, seg, sib, disp 846088Sgblack@eecs.umich.edu stul reg, seg, sib, disp 856088Sgblack@eecs.umich.edu mov reg, reg, t1 866088Sgblack@eecs.umich.edu}; 876088Sgblack@eecs.umich.edu 886088Sgblack@eecs.umich.edudef macroop XCHG_LOCKED_P_R 896088Sgblack@eecs.umich.edu{ 906088Sgblack@eecs.umich.edu rdip t7 916088Sgblack@eecs.umich.edu ldstl t1, seg, riprel, disp 926088Sgblack@eecs.umich.edu stul reg, seg, riprel, disp 936088Sgblack@eecs.umich.edu mov reg, reg, t1 946088Sgblack@eecs.umich.edu}; 955081Sgblack@eecs.umich.edu''' 96