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// -*- mode:c++ -*-
// Copyright (c) 2010-2012 ARM Limited
// All rights reserved
//
// The license below extends only to copyright in the software and shall
// not be construed as granting a license to any other intellectual
// property including but not limited to intellectual property relating
// to a hardware implementation of the functionality of the software
// licensed hereunder. You may use the software subject to the license
// terms below provided that you ensure that this notice is replicated
// unmodified and in its entirety in all distributions of the software,
// modified or unmodified, in source code or in binary form.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met: redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer;
// redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution;
// neither the name of the copyright holders nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Authors: Gabe Black
let {{
class LoadStoreInst(object):
def __init__(self):
self.fullExecTemplate = eval(self.execBase + 'Execute')
self.initiateAccTemplate = eval(self.execBase + 'InitiateAcc')
self.completeAccTemplate = eval(self.execBase + 'CompleteAcc')
self.declareTemplate = eval(self.decConstBase + 'Declare')
self.constructTemplate = eval(self.decConstBase + 'Constructor')
def fillTemplates(self, name, Name, codeBlobs, memFlags, instFlags,
base='Memory', wbDecl=None, pcDecl=None,
rasPop=False, size=4, sign=False, faCode=None):
# Make sure flags are in lists (convert to lists if not).
memFlags = makeList(memFlags)
instFlags = makeList(instFlags)
eaCode = codeBlobs["ea_code"]
# This shouldn't be part of the eaCode, but until the exec templates
# are converted over it's the easiest place to put it.
eaCode += '\n unsigned memAccessFlags = '
eaCode += (string.join(memFlags, '|') + ';')
codeBlobs["ea_code"] = eaCode
if faCode:
# For AArch64 the fa_code snippet comes already assembled here
codeBlobs["fa_code"] = faCode
elif wbDecl == None:
codeBlobs["fa_code"] = '''
if (dest != INTREG_PC) {
fault->annotate(ArmFault::SAS, %s);
fault->annotate(ArmFault::SSE, %s);
fault->annotate(ArmFault::SRT, dest);
}
''' %("0" if size == 1 else
"1" if size == 2 else "2",
"true" if sign else "false")
else:
codeBlobs["fa_code"] = ''
macroName = Name
instFlagsCopy = list(instFlags)
codeBlobsCopy = dict(codeBlobs)
use_uops = 0
if wbDecl is not None or pcDecl is not None:
instFlagsCopy.append('IsMicroop')
Name = Name + 'Acc'
use_uops = 1
use_wb = 0
use_pc = 0
if wbDecl is not None:
use_wb = 1
if pcDecl is not None:
use_pc = 1
codeBlobsCopy['acc_name'] = Name
codeBlobsCopy['wb_decl'] = wbDecl
codeBlobsCopy['pc_decl'] = pcDecl
codeBlobsCopy['use_uops'] = 0
codeBlobsCopy['use_wb'] = 0
codeBlobsCopy['use_pc'] = 0
is_ras_pop = "0"
if rasPop:
is_ras_pop = "1"
codeBlobsCopy['is_ras_pop'] = is_ras_pop
iop = InstObjParams(name, Name, base,
codeBlobsCopy, instFlagsCopy)
header_output = self.declareTemplate.subst(iop)
decoder_output = self.constructTemplate.subst(iop)
exec_output = self.fullExecTemplate.subst(iop) + \
self.initiateAccTemplate.subst(iop) + \
self.completeAccTemplate.subst(iop)
if wbDecl is not None or pcDecl is not None:
iop = InstObjParams(name, macroName, base,
{ "wb_decl" : wbDecl,
"pc_decl" : pcDecl,
"acc_name" : Name,
"use_uops" : use_uops,
"use_pc" : use_pc,
"use_wb" : use_wb,
"fa_code" : '',
"is_ras_pop" : is_ras_pop },
['IsMacroop'])
header_output += self.declareTemplate.subst(iop)
decoder_output += self.constructTemplate.subst(iop)
exec_output += PanicExecute.subst(iop) + \
PanicInitiateAcc.subst(iop) + \
PanicCompleteAcc.subst(iop)
return (header_output, decoder_output, exec_output)
def pickPredicate(blobs):
opt_nz = True
opt_c = 'opt'
opt_v = True
if not isinstance(blobs, dict):
vals = [blobs]
else:
vals = blobs.values()
for val in vals:
if re.search('(?<!Opt)CondCodesNZ(?!.*=)', val):
opt_nz = False
if re.search('OptShiftRmCondCodesC(?!.*=)', val):
opt_c = 'opt_shift_rm'
elif re.search('(?<!Opt)CondCodesC(?!.*=)', val):
opt_c = 'none'
if re.search('(?<!Opt)CondCodesV(?!.*=)', val):
opt_v = False
# Build up the predicate piece by piece depending on which
# flags the instruction needs
predicate = 'testPredicate('
if opt_nz:
predicate += 'OptCondCodesNZ, '
else:
predicate += 'CondCodesNZ, '
if opt_c == 'opt':
predicate += 'OptCondCodesC, '
elif opt_c == 'opt_shift_rm':
predicate += 'OptShiftRmCondCodesC, '
else:
predicate += 'CondCodesC, '
if opt_v:
predicate += 'OptCondCodesV, '
else:
predicate += 'CondCodesV, '
predicate += 'condCode)'
predicate += '/*auto*/'
return predicate
def memClassName(base, post, add, writeback, \
size=4, sign=False, user=False):
Name = base
parts = { "P" : post, "A" : add, "W" : writeback,
"S" : sign, "U" : user }
for (letter, val) in parts.items():
if val:
Name += "_%sY" % letter
else:
Name += "_%sN" % letter
Name += ('_SZ%d' % size)
return Name
def buildMemSuffix(sign, size):
if size == 16:
memSuffix = '_tud'
elif size == 8:
memSuffix = '_ud'
elif size == 4:
if sign:
memSuffix = '_sw'
else:
memSuffix = '_uw'
elif size == 2:
if sign:
memSuffix = '_sh'
else:
memSuffix = '_uh'
elif size == 1:
if sign:
memSuffix = '_sb'
else:
memSuffix = '_ub'
else:
raise Exception, "Unrecognized size for access %d" % size
return memSuffix
def buildMemBase(base, post, writeback):
if post and writeback:
base = "MemoryPostIndex<%s>" % base
elif not post and writeback:
base = "MemoryPreIndex<%s>" % base
elif not post and not writeback:
base = "MemoryOffset<%s>" % base
else:
raise Exception, "Illegal combination of post and writeback"
return base
}};
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