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// -*- mode:c++ -*-
// Copyright (c) 2011-2013,2017,2019-2020 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.
let {{
header_output = ""
decoder_output = ""
exec_output = ""
class StoreInst64(LoadStoreInst):
execBase = 'Store64'
micro = False
def __init__(self, mnem, Name, size=4, user=False, flavor="normal",
top = False):
super(StoreInst64, self).__init__()
self.name = mnem
self.Name = Name
self.size = size
self.user = user
self.flavor = flavor
self.top = top
self.memFlags = []
self.instFlags = []
self.codeBlobs = { "postacc_code" : "" }
# Add memory request flags where necessary
if self.user:
self.memFlags.append("userFlag")
if self.flavor in ("relexp", "exp"):
# For exclusive pair ops alignment check is based on total size
self.memFlags.append("%d" % int(math.log(self.size, 2) + 1))
elif not (self.size == 16 and self.top):
# Only the first microop should perform alignment checking.
self.memFlags.append("%d" % int(math.log(self.size, 2)))
if self.flavor not in ("release", "relex", "exclusive",
"relexp", "exp"):
self.memFlags.append("ArmISA::TLB::AllowUnaligned")
if self.micro:
self.instFlags.append("IsMicroop")
if self.flavor in ("release", "relex", "relexp"):
self.instFlags.extend(["IsMemBarrier",
"IsWriteBarrier",
"IsReadBarrier"])
self.memFlags.append("Request::RELEASE")
if self.flavor in ("relex", "exclusive", "exp", "relexp"):
self.instFlags.append("IsStoreConditional")
self.memFlags.append("Request::LLSC")
def emitHelper(self, base = 'Memory64', wbDecl = None):
global header_output, decoder_output, exec_output
# If this is a microop itself, don't allow anything that would
# require further microcoding.
if self.micro:
assert not wbDecl
fa_code = None
if not self.micro and self.flavor in ("normal", "release"):
fa_code = '''
fault->annotate(ArmFault::SAS, %s);
fault->annotate(ArmFault::SSE, false);
fault->annotate(ArmFault::SRT, dest);
fault->annotate(ArmFault::SF, %s);
fault->annotate(ArmFault::AR, %s);
''' % ("0" if self.size == 1 else
"1" if self.size == 2 else
"2" if self.size == 4 else "3",
"true" if self.size == 8 else "false",
"true" if self.flavor == "release" else "false")
(newHeader, newDecoder, newExec) = \
self.fillTemplates(self.name, self.Name, self.codeBlobs,
self.memFlags, self.instFlags,
base, wbDecl, faCode=fa_code)
header_output += newHeader
decoder_output += newDecoder
exec_output += newExec
def buildEACode(self):
# Address computation
eaCode = ""
if self.flavor == "fp":
eaCode += vfp64EnabledCheckCode
eaCode += SPAlignmentCheckCode + "EA = XBase"
if self.size == 16:
if self.top:
eaCode += " + (isBigEndian64(xc->tcBase()) ? 0 : 8)"
else:
eaCode += " + (isBigEndian64(xc->tcBase()) ? 8 : 0)"
if not self.post:
eaCode += self.offset
eaCode += ";"
if self.user:
eaCode += " uint8_t userFlag = 0;\n"\
" if(isUnpriviledgeAccess(xc->tcBase()))\n"\
" userFlag = ArmISA::TLB::UserMode;"
self.codeBlobs["ea_code"] = eaCode
class StoreImmInst64(StoreInst64):
def __init__(self, *args, **kargs):
super(StoreImmInst64, self).__init__(*args, **kargs)
self.offset = "+ imm"
self.wbDecl = "MicroAddXiUop(machInst, base, base, imm);"
class StoreRegInst64(StoreInst64):
def __init__(self, *args, **kargs):
super(StoreRegInst64, self).__init__(*args, **kargs)
self.offset = "+ extendReg64(XOffset, type, shiftAmt, 64)"
self.wbDecl = \
"MicroAddXERegUop(machInst, base, base, " + \
" offset, type, shiftAmt);"
class StoreRawRegInst64(StoreInst64):
def __init__(self, *args, **kargs):
super(StoreRawRegInst64, self).__init__(*args, **kargs)
self.offset = ""
class StoreSingle64(StoreInst64):
def emit(self):
self.buildEACode()
# Code that actually handles the access
if self.flavor == "fp":
if self.size in (1, 2, 4):
accCode = '''
Mem%(suffix)s =
cSwap(AA64FpDestP0%(suffix)s, isBigEndian64(xc->tcBase()));
'''
elif self.size == 8 or (self.size == 16 and not self.top):
accCode = '''
uint64_t data = AA64FpDestP1_uw;
data = (data << 32) | AA64FpDestP0_uw;
Mem%(suffix)s = cSwap(data, isBigEndian64(xc->tcBase()));
'''
elif self.size == 16 and self.top:
accCode = '''
uint64_t data = AA64FpDestP3_uw;
data = (data << 32) | AA64FpDestP2_uw;
Mem%(suffix)s = cSwap(data, isBigEndian64(xc->tcBase()));
'''
else:
accCode = \
'Mem%(suffix)s = cSwap(XDest%(suffix)s, isBigEndian64(xc->tcBase()));'
if self.size == 16:
accCode = accCode % \
{ "suffix" : buildMemSuffix(False, 8) }
else:
accCode = accCode % \
{ "suffix" : buildMemSuffix(False, self.size) }
self.codeBlobs["memacc_code"] = accCode
if self.flavor in ("relex", "exclusive"):
self.instFlags.append("IsStoreConditional")
self.memFlags.append("Request::LLSC")
# Push it out to the output files
wbDecl = None
if self.writeback and not self.micro:
wbDecl = self.wbDecl
self.emitHelper(self.base, wbDecl)
class StoreDouble64(StoreInst64):
def emit(self):
self.buildEACode()
# Code that actually handles the access
if self.flavor == "fp":
accCode = '''
uint64_t data = AA64FpDest2P0_uw;
data = isBigEndian64(xc->tcBase())
? ((uint64_t(AA64FpDestP0_uw) << 32) | data)
: ((data << 32) | AA64FpDestP0_uw);
Mem_ud = cSwap(data, isBigEndian64(xc->tcBase()));
'''
else:
if self.size == 4:
accCode = '''
uint64_t data = XDest2_uw;
data = isBigEndian64(xc->tcBase())
? ((uint64_t(XDest_uw) << 32) | data)
: ((data << 32) | XDest_uw);
Mem_ud = cSwap(data, isBigEndian64(xc->tcBase()));
'''
elif self.size == 8:
accCode = '''
// This temporary needs to be here so that the parser
// will correctly identify this instruction as a store.
std::array<uint64_t, 2> temp;
temp[0] = cSwap(XDest_ud,isBigEndian64(xc->tcBase()));
temp[1] = cSwap(XDest2_ud,isBigEndian64(xc->tcBase()));
Mem_tud = temp;
'''
self.codeBlobs["memacc_code"] = accCode
# Push it out to the output files
wbDecl = None
if self.writeback and not self.micro:
wbDecl = self.wbDecl
self.emitHelper(self.base, wbDecl)
class StoreImm64(StoreImmInst64, StoreSingle64):
decConstBase = 'LoadStoreImm64'
base = 'ArmISA::MemoryImm64'
writeback = False
post = False
class StorePre64(StoreImmInst64, StoreSingle64):
decConstBase = 'LoadStoreImm64'
base = 'ArmISA::MemoryPreIndex64'
writeback = True
post = False
class StorePost64(StoreImmInst64, StoreSingle64):
decConstBase = 'LoadStoreImm64'
base = 'ArmISA::MemoryPostIndex64'
writeback = True
post = True
class StoreReg64(StoreRegInst64, StoreSingle64):
decConstBase = 'LoadStoreReg64'
base = 'ArmISA::MemoryReg64'
writeback = False
post = False
class StoreRaw64(StoreRawRegInst64, StoreSingle64):
decConstBase = 'LoadStoreRaw64'
base = 'ArmISA::MemoryRaw64'
writeback = False
post = False
class StoreEx64(StoreRawRegInst64, StoreSingle64):
decConstBase = 'LoadStoreEx64'
base = 'ArmISA::MemoryEx64'
writeback = False
post = False
execBase = 'StoreEx64'
def __init__(self, *args, **kargs):
super(StoreEx64, self).__init__(*args, **kargs)
self.codeBlobs["postacc_code"] = \
"XResult = !writeResult; SevMailbox = 1; LLSCLock = 0;"
def buildStores64(mnem, NameBase, size, flavor="normal"):
StoreImm64(mnem, NameBase + "_IMM", size, flavor=flavor).emit()
StorePre64(mnem, NameBase + "_PRE", size, flavor=flavor).emit()
StorePost64(mnem, NameBase + "_POST", size, flavor=flavor).emit()
StoreReg64(mnem, NameBase + "_REG", size, flavor=flavor).emit()
buildStores64("strb", "STRB64", size=1)
buildStores64("strh", "STRH64", size=2)
buildStores64("str", "STRW64", size=4)
buildStores64("str", "STRX64", size=8)
buildStores64("str", "STRBFP64", size=1, flavor="fp")
buildStores64("str", "STRHFP64", size=2, flavor="fp")
buildStores64("str", "STRSFP64", size=4, flavor="fp")
buildStores64("str", "STRDFP64", size=8, flavor="fp")
StoreImm64("sturb", "STURB64_IMM", size=1).emit()
StoreImm64("sturh", "STURH64_IMM", size=2).emit()
StoreImm64("stur", "STURW64_IMM", size=4).emit()
StoreImm64("stur", "STURX64_IMM", size=8).emit()
StoreImm64("stur", "STURBFP64_IMM", size=1, flavor="fp").emit()
StoreImm64("stur", "STURHFP64_IMM", size=2, flavor="fp").emit()
StoreImm64("stur", "STURSFP64_IMM", size=4, flavor="fp").emit()
StoreImm64("stur", "STURDFP64_IMM", size=8, flavor="fp").emit()
StoreImm64("sttrb", "STTRB64_IMM", size=1, user=True).emit()
StoreImm64("sttrh", "STTRH64_IMM", size=2, user=True).emit()
StoreImm64("sttr", "STTRW64_IMM", size=4, user=True).emit()
StoreImm64("sttr", "STTRX64_IMM", size=8, user=True).emit()
StoreRaw64("stlr", "STLRX64", size=8, flavor="release").emit()
StoreRaw64("stlr", "STLRW64", size=4, flavor="release").emit()
StoreRaw64("stlrh", "STLRH64", size=2, flavor="release").emit()
StoreRaw64("stlrb", "STLRB64", size=1, flavor="release").emit()
StoreEx64("stlxr", "STLXRX64", size=8, flavor="relex").emit()
StoreEx64("stlxr", "STLXRW64", size=4, flavor="relex").emit()
StoreEx64("stlxrh", "STLXRH64", size=2, flavor="relex").emit()
StoreEx64("stlxrb", "STLXRB64", size=1, flavor="relex").emit()
StoreEx64("stxr", "STXRX64", size=8, flavor="exclusive").emit()
StoreEx64("stxr", "STXRW64", size=4, flavor="exclusive").emit()
StoreEx64("stxrh", "STXRH64", size=2, flavor="exclusive").emit()
StoreEx64("stxrb", "STXRB64", size=1, flavor="exclusive").emit()
class StoreImmU64(StoreImm64):
decConstBase = 'LoadStoreImmU64'
micro = True
class StoreImmDU64(StoreImmInst64, StoreDouble64):
decConstBase = 'LoadStoreImmDU64'
base = 'ArmISA::MemoryDImm64'
micro = True
post = False
writeback = False
class StoreImmDEx64(StoreImmInst64, StoreDouble64):
execBase = 'StoreEx64'
decConstBase = 'StoreImmDEx64'
base = 'ArmISA::MemoryDImmEx64'
micro = False
post = False
writeback = False
def __init__(self, *args, **kargs):
super(StoreImmDEx64, self).__init__(*args, **kargs)
self.codeBlobs["postacc_code"] = \
"XResult = !writeResult; SevMailbox = 1; LLSCLock = 0;"
class StoreRegU64(StoreReg64):
decConstBase = 'LoadStoreRegU64'
micro = True
StoreImmDEx64("stlxp", "STLXPW64", size=4, flavor="relexp").emit()
StoreImmDEx64("stlxp", "STLXPX64", size=8, flavor="relexp").emit()
StoreImmDEx64("stxp", "STXPW64", size=4, flavor="exp").emit()
StoreImmDEx64("stxp", "STXPX64", size=8, flavor="exp").emit()
StoreImmU64("strxi_uop", "MicroStrXImmUop", size=8).emit()
StoreRegU64("strxr_uop", "MicroStrXRegUop", size=8).emit()
StoreImmU64("strfpxi_uop", "MicroStrFpXImmUop", size=8, flavor="fp").emit()
StoreRegU64("strfpxr_uop", "MicroStrFpXRegUop", size=8, flavor="fp").emit()
StoreImmU64("strqbfpxi_uop", "MicroStrQBFpXImmUop",
size=16, flavor="fp", top=False).emit()
StoreRegU64("strqbfpxr_uop", "MicroStrQBFpXRegUop",
size=16, flavor="fp", top=False).emit()
StoreImmU64("strqtfpxi_uop", "MicroStrQTFpXImmUop",
size=16, flavor="fp", top=True).emit()
StoreRegU64("strqtfpxr_uop", "MicroStrQTFpXRegUop",
size=16, flavor="fp", top=True).emit()
StoreImmDU64("strdxi_uop", "MicroStrDXImmUop", size=4).emit()
StoreImmDU64("strdfpxi_uop", "MicroStrDFpXImmUop",
size=4, flavor="fp").emit()
}};