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// Copyright (c) 2006-2007 The Regents of The University of Michigan
// All rights reserved.
//
// 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
// Steve Reinhardt
////////////////////////////////////////////////////////////////////
//
// Trap instructions
//
output header {{
/**
* Base class for trap instructions,
* or instructions that always fault.
*/
class Trap : public SparcStaticInst
{
protected:
// Constructor
Trap(const char *mnem, ExtMachInst _machInst, OpClass __opClass) :
SparcStaticInst(mnem, _machInst, __opClass), trapNum(SW_TRAP)
{
}
std::string generateDisassembly(Addr pc,
const SymbolTable *symtab) const;
int trapNum;
};
}};
output decoder {{
std::string
Trap::generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
std::stringstream response;
printMnemonic(response, mnemonic);
ccprintf(response, " ");
printReg(response, _srcRegIdx[0]);
ccprintf(response, ", 0x%x", trapNum);
ccprintf(response, ", or ");
printReg(response, _srcRegIdx[1]);
return response.str();
}
}};
def template TrapExecute {{
Fault
%(class_name)s::execute(%(CPU_exec_context)s *xc,
Trace::InstRecord *traceData) const
{
Fault fault = NoFault;
%(op_decl)s;
%(op_rd)s;
%(code)s
return fault;
}
}};
def template FpUnimplExecute {{
Fault
%(class_name)s::execute(%(CPU_exec_context)s *xc,
Trace::InstRecord *traceData) const
{
Fault fault = NoFault;
%(op_decl)s;
%(op_rd)s;
%(code)s
%(op_wb)s;
return fault;
}
}};
def format Trap(code, *opt_flags) {{
iop = InstObjParams(name, Name, 'Trap', code, opt_flags)
header_output = BasicDeclare.subst(iop)
decoder_output = BasicConstructor.subst(iop)
decode_block = BasicDecode.subst(iop)
exec_output = TrapExecute.subst(iop)
}};
output header {{
class FpUnimpl : public SparcStaticInst
{
protected:
FpUnimpl(const char *mnem,
ExtMachInst _machInst, OpClass __opClass)
: SparcStaticInst(mnem, _machInst, __opClass)
{
}
std::string
generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
return mnemonic;
}
};
}};
def format FpUnimpl(*flags) {{
fpunimpl_code = '''
Fsr = insertBits(Fsr, 16, 14, 3);
fault = new FpExceptionOther;
'''
iop = InstObjParams(name, Name, 'FpUnimpl', fpunimpl_code, flags)
header_output = BasicDeclare.subst(iop)
decoder_output = BasicConstructor.subst(iop)
decode_block = BasicDecode.subst(iop)
exec_output = FpUnimplExecute.subst(iop)
}};
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