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// Copyright (c) 2008 The Hewlett-Packard Development Company
// 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
output header {{
class SeqOpBase : public X86ISA::X86MicroopBase
{
protected:
uint16_t target;
uint8_t cc;
public:
SeqOpBase(ExtMachInst _machInst, const char * instMnem,
const char * mnemonic, uint64_t setFlags,
uint16_t _target, uint8_t _cc);
SeqOpBase(ExtMachInst _machInst, const char * instMnem,
const char * mnemonic,
uint16_t _target, uint8_t _cc);
std::string generateDisassembly(Addr pc,
const SymbolTable *symtab) const;
};
}};
def template SeqOpDeclare {{
class %(class_name)s : public %(base_class)s
{
public:
%(class_name)s(ExtMachInst _machInst, const char * instMnem,
uint64_t setFlags, uint16_t _target, uint8_t _cc);
%(BasicExecDeclare)s
};
}};
def template SeqOpExecute {{
Fault %(class_name)s::execute(%(CPU_exec_context)s *xc,
Trace::InstRecord *traceData) const
{
%(op_decl)s;
%(op_rd)s;
if (%(cond_test)s) {
%(code)s;
} else {
%(else_code)s;
}
%(op_wb)s;
return NoFault;
}
}};
output decoder {{
inline SeqOpBase::SeqOpBase(
ExtMachInst machInst, const char * mnemonic, const char * instMnem,
uint64_t setFlags, uint16_t _target, uint8_t _cc) :
X86MicroopBase(machInst, mnemonic, instMnem, setFlags, No_OpClass),
target(_target), cc(_cc)
{
}
}};
def template SeqOpConstructor {{
inline %(class_name)s::%(class_name)s(
ExtMachInst machInst, const char * instMnem,
uint64_t setFlags, uint16_t _target, uint8_t _cc) :
%(base_class)s(machInst, "%(mnemonic)s", instMnem,
setFlags, _target, _cc)
{
%(constructor)s;
}
}};
output decoder {{
std::string SeqOpBase::generateDisassembly(Addr pc,
const SymbolTable *symtab) const
{
std::stringstream response;
printMnemonic(response, instMnem, mnemonic);
ccprintf(response, "%#x", target);
return response.str();
}
}};
let {{
class SeqOp(X86Microop):
def __init__(self, target, flags=None):
self.target = target
if flags:
if not isinstance(flags, (list, tuple)):
raise Exception, "flags must be a list or tuple of flags"
self.cond = " | ".join(flags)
self.className += "Flags"
else:
self.cond = "0"
def getAllocator(self, microFlags):
allocator = '''new %(class_name)s(machInst, macrocodeBlock,
%(flags)s, %(target)s, %(cc)s)''' % {
"class_name" : self.className,
"flags" : self.microFlagsText(microFlags),
"target" : self.target,
"cc" : self.cond}
return allocator
class Br(SeqOp):
className = "MicroBranch"
def getAllocator(self, microFlags):
if "IsLastMicroop" in microFlags:
microFlags.remove("IsLastMicroop")
if not "IsDelayedCommit" in microFlags:
microFlags.append("IsDelayedCommit")
return super(Br, self).getAllocator(microFlags)
class Eret(SeqOp):
target = "normalMicroPC(0)"
className = "Eret"
def __init__(self, flags=None):
if flags:
if not isinstance(flags, (list, tuple)):
raise Exception, "flags must be a list or tuple of flags"
self.cond = " | ".join(flags)
self.className += "Flags"
else:
self.cond = "0"
def getAllocator(self, microFlags):
if not "IsLastMicroop" in microFlags:
microFlags.append("IsLastMicroop")
if "IsDelayedCommit" in microFlags:
microFlags.remove("IsDelayedCommit")
return super(Eret, self).getAllocator(microFlags)
iop = InstObjParams("br", "MicroBranchFlags", "SeqOpBase",
{"code": '''
X86ISA::PCState pc = PCS;
pc.nupc(target);
PCS = pc;
''',
"else_code": "PCS = PCS",
"cond_test": "checkCondition(ccFlagBits, cc)"})
exec_output += SeqOpExecute.subst(iop)
header_output += SeqOpDeclare.subst(iop)
decoder_output += SeqOpConstructor.subst(iop)
iop = InstObjParams("br", "MicroBranch", "SeqOpBase",
{"code": '''
X86ISA::PCState pc = PCS;
pc.nupc(target);
PCS = pc;
''',
"else_code": "PCS = PCS",
"cond_test": "true"})
exec_output += SeqOpExecute.subst(iop)
header_output += SeqOpDeclare.subst(iop)
decoder_output += SeqOpConstructor.subst(iop)
microopClasses["br"] = Br
iop = InstObjParams("eret", "EretFlags", "SeqOpBase",
{"code": "", "else_code": "",
"cond_test": "checkCondition(ccFlagBits, cc)"})
exec_output += SeqOpExecute.subst(iop)
header_output += SeqOpDeclare.subst(iop)
decoder_output += SeqOpConstructor.subst(iop)
iop = InstObjParams("eret", "Eret", "SeqOpBase",
{"code": "", "else_code": "",
"cond_test": "true"})
exec_output += SeqOpExecute.subst(iop)
header_output += SeqOpDeclare.subst(iop)
decoder_output += SeqOpConstructor.subst(iop)
microopClasses["eret"] = Eret
}};
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