15420Sgblack@eecs.umich.edu# Copyright (c) 2007-2008 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.edudef macroop SCAS_M { 405081Sgblack@eecs.umich.edu # Find the constant we need to either add or subtract from rdi 415081Sgblack@eecs.umich.edu ruflag t0, 10 425081Sgblack@eecs.umich.edu movi t2, t2, dsz, flags=(CEZF,), dataSize=asz 435081Sgblack@eecs.umich.edu subi t3, t0, dsz, dataSize=asz 445081Sgblack@eecs.umich.edu mov t2, t2, t3, flags=(nCEZF,), dataSize=asz 455081Sgblack@eecs.umich.edu 465081Sgblack@eecs.umich.edu ld t1, es, [1, t0, rdi] 476474Sgblack@eecs.umich.edu sub t0, rax, t1, flags=(OF, SF, ZF, AF, PF, CF) 485081Sgblack@eecs.umich.edu 495081Sgblack@eecs.umich.edu add rdi, rdi, t2, dataSize=asz 505081Sgblack@eecs.umich.edu}; 515081Sgblack@eecs.umich.edu 525081Sgblack@eecs.umich.edu# 535081Sgblack@eecs.umich.edu# Versions which have the rep prefix. These could benefit from some loop 545081Sgblack@eecs.umich.edu# unrolling. 555081Sgblack@eecs.umich.edu# 565081Sgblack@eecs.umich.edu 575081Sgblack@eecs.umich.edudef macroop SCAS_E_M { 585420Sgblack@eecs.umich.edu and t0, rcx, rcx, flags=(EZF,), dataSize=asz 595661Sgblack@eecs.umich.edu br label("end"), flags=(CEZF,) 605420Sgblack@eecs.umich.edu 615081Sgblack@eecs.umich.edu # Find the constant we need to either add or subtract from rdi 625081Sgblack@eecs.umich.edu ruflag t0, 10 635081Sgblack@eecs.umich.edu movi t2, t2, dsz, flags=(CEZF,), dataSize=asz 645081Sgblack@eecs.umich.edu subi t3, t0, dsz, dataSize=asz 655081Sgblack@eecs.umich.edu mov t2, t2, t3, flags=(nCEZF,), dataSize=asz 665081Sgblack@eecs.umich.edu 675420Sgblack@eecs.umich.edutopOfLoop: 685081Sgblack@eecs.umich.edu ld t1, es, [1, t0, rdi] 696474Sgblack@eecs.umich.edu sub t0, rax, t1, flags=(OF, SF, ZF, AF, PF, CF) 705081Sgblack@eecs.umich.edu 715081Sgblack@eecs.umich.edu subi rcx, rcx, 1, flags=(EZF,), dataSize=asz 725081Sgblack@eecs.umich.edu add rdi, rdi, t2, dataSize=asz 735661Sgblack@eecs.umich.edu br label("topOfLoop"), flags=(CSTRZnEZF,) 745420Sgblack@eecs.umich.eduend: 755081Sgblack@eecs.umich.edu fault "NoFault" 765081Sgblack@eecs.umich.edu}; 775081Sgblack@eecs.umich.edu 785081Sgblack@eecs.umich.edudef macroop SCAS_N_M { 795420Sgblack@eecs.umich.edu and t0, rcx, rcx, flags=(EZF,), dataSize=asz 805661Sgblack@eecs.umich.edu br label("end"), flags=(CEZF,) 815420Sgblack@eecs.umich.edu 825081Sgblack@eecs.umich.edu # Find the constant we need to either add or subtract from rdi 835081Sgblack@eecs.umich.edu ruflag t0, 10 845081Sgblack@eecs.umich.edu movi t2, t2, dsz, flags=(CEZF,), dataSize=asz 855081Sgblack@eecs.umich.edu subi t3, t0, dsz, dataSize=asz 865081Sgblack@eecs.umich.edu mov t2, t2, t3, flags=(nCEZF,), dataSize=asz 875081Sgblack@eecs.umich.edu 885420Sgblack@eecs.umich.edutopOfLoop: 895081Sgblack@eecs.umich.edu ld t1, es, [1, t0, rdi] 906474Sgblack@eecs.umich.edu sub t0, rax, t1, flags=(OF, SF, ZF, AF, PF, CF) 915081Sgblack@eecs.umich.edu 925081Sgblack@eecs.umich.edu subi rcx, rcx, 1, flags=(EZF,), dataSize=asz 935081Sgblack@eecs.umich.edu add rdi, rdi, t2, dataSize=asz 945661Sgblack@eecs.umich.edu br label("topOfLoop"), flags=(CSTRnZnEZF,) 955420Sgblack@eecs.umich.eduend: 965081Sgblack@eecs.umich.edu fault "NoFault" 975081Sgblack@eecs.umich.edu}; 985081Sgblack@eecs.umich.edu 995081Sgblack@eecs.umich.edu''' 100