From 835a55e7f347697815fc43851b2dd5a8642d21c4 Mon Sep 17 00:00:00 2001 From: "Timothy M. Jones" Date: Tue, 27 Oct 2009 09:24:39 -0700 Subject: POWER: Add support for the Power ISA This adds support for the 32-bit, big endian Power ISA. This supports both integer and floating point instructions based on the Power ISA Book I v2.06. --- src/arch/power/isa/formats/mem.isa | 351 +++++++++++++++++++++++++++++++++++++ 1 file changed, 351 insertions(+) create mode 100644 src/arch/power/isa/formats/mem.isa (limited to 'src/arch/power/isa/formats/mem.isa') diff --git a/src/arch/power/isa/formats/mem.isa b/src/arch/power/isa/formats/mem.isa new file mode 100644 index 000000000..1be49c2f7 --- /dev/null +++ b/src/arch/power/isa/formats/mem.isa @@ -0,0 +1,351 @@ +// -*- mode:c++ -*- + +// Copyright (c) 2009 The University of Edinburgh +// 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: Timothy M. Jones + +//////////////////////////////////////////////////////////////////// +// +// Memory-format instructions +// + +def template LoadStoreDeclare {{ + /** + * Static instruction class for "%(mnemonic)s". + */ + class %(class_name)s : public %(base_class)s + { + public: + + /// Constructor. + %(class_name)s(ExtMachInst machInst); + + %(BasicExecDeclare)s + + %(InitiateAccDeclare)s + + %(CompleteAccDeclare)s + }; +}}; + + +def template InitiateAccDeclare {{ + Fault initiateAcc(%(CPU_exec_context)s *, Trace::InstRecord *) const; +}}; + + +def template CompleteAccDeclare {{ + Fault completeAcc(PacketPtr, %(CPU_exec_context)s *, Trace::InstRecord *) const; +}}; + + +def template LoadStoreConstructor {{ + inline %(class_name)s::%(class_name)s(ExtMachInst machInst) + : %(base_class)s("%(mnemonic)s", machInst, %(op_class)s) + { + %(constructor)s; + } +}}; + + +def template LoadExecute {{ + Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, + Trace::InstRecord *traceData) const + { + Addr EA; + Fault fault = NoFault; + + %(op_decl)s; + %(op_rd)s; + %(ea_code)s; + + if (fault == NoFault) { + fault = xc->read(EA, (uint%(mem_acc_size)d_t&)Mem, memAccessFlags); + %(memacc_code)s; + } + + if (fault == NoFault) { + %(op_wb)s; + } + + return fault; + } +}}; + + +def template LoadInitiateAcc {{ + Fault %(class_name)s::initiateAcc(%(CPU_exec_context)s *xc, + Trace::InstRecord *traceData) const + { + Addr EA; + Fault fault = NoFault; + + %(op_src_decl)s; + %(op_rd)s; + %(ea_code)s; + + if (fault == NoFault) { + fault = xc->read(EA, (uint%(mem_acc_size)d_t &)Mem, memAccessFlags); + xc->setEA(EA); + } + + return fault; + } +}}; + + +def template LoadCompleteAcc {{ + Fault %(class_name)s::completeAcc(PacketPtr pkt, + %(CPU_exec_context)s *xc, + Trace::InstRecord *traceData) const + { + Addr EA; + Fault fault = NoFault; + uint%(mem_acc_size)d_t val; + + %(op_decl)s; + %(op_rd)s; + + EA = xc->getEA(); + + val = pkt->get(); + *((uint%(mem_acc_size)d_t*)&Mem) = val; + + if (fault == NoFault) { + %(memacc_code)s; + } + + if (fault == NoFault) { + %(op_wb)s; + } + + return fault; + } +}}; + + +def template StoreExecute {{ + Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, + Trace::InstRecord *traceData) const + { + Addr EA; + Fault fault = NoFault; + + %(op_decl)s; + %(op_rd)s; + %(ea_code)s; + + if (fault == NoFault) { + %(memacc_code)s; + } + + if (fault == NoFault) { + fault = xc->write((uint%(mem_acc_size)d_t&)Mem, EA, + memAccessFlags, NULL); + if (traceData) { traceData->setData(Mem); } + } + + if (fault == NoFault) { + %(op_wb)s; + } + + return fault; + } +}}; + + +def template StoreInitiateAcc {{ + Fault %(class_name)s::initiateAcc(%(CPU_exec_context)s *xc, + Trace::InstRecord *traceData) const + { + Addr EA; + Fault fault = NoFault; + + %(op_decl)s; + %(op_rd)s; + %(ea_code)s; + + if (fault == NoFault) { + %(memacc_code)s; + } + + if (fault == NoFault) { + fault = xc->write((uint%(mem_acc_size)d_t&)Mem, EA, + memAccessFlags, NULL); + if (traceData) { traceData->setData(Mem); } + } + + // Need to write back any potential address register update + if (fault == NoFault) { + %(op_wb)s; + } + + return fault; + } +}}; + + +def template StoreCompleteAcc {{ + Fault %(class_name)s::completeAcc(PacketPtr pkt, + %(CPU_exec_context)s *xc, + Trace::InstRecord *traceData) const + { + Fault fault = NoFault; + + %(op_dest_decl)s; + + if (fault == NoFault) { + %(op_wb)s; + } + + return fault; + } +}}; + + +// The generic memory operation generator. This is called when two versions +// of an instruction are needed - when Ra == 0 and otherwise. This is so +// that instructions can use the value 0 when Ra == 0 but avoid having a +// dependence on Ra. +let {{ + +def GenMemOp(name, Name, memacc_code, ea_code, ea_code_ra0, base, + load_or_store, mem_flags = [], inst_flags = []): + + # First the version where Ra is non-zero + (header_output, decoder_output, decode_block, exec_output) = \ + LoadStoreBase(name, Name, ea_code, memacc_code, mem_flags, inst_flags, + base_class = base, + decode_template = CheckRaDecode, + exec_template_base = load_or_store) + + # Now another version where Ra == 0 + (header_output_ra0, decoder_output_ra0, _, exec_output_ra0) = \ + LoadStoreBase(name, Name + 'RaZero', ea_code_ra0, memacc_code, + mem_flags, inst_flags, + base_class = base, + exec_template_base = load_or_store) + + # Finally, add to the other outputs + header_output += header_output_ra0 + decoder_output += decoder_output_ra0 + exec_output += exec_output_ra0 + return (header_output, decoder_output, decode_block, exec_output) + +}}; + + +def format LoadIndexOp(memacc_code, ea_code = {{ EA = Ra + Rb; }}, + ea_code_ra0 = {{ EA = Rb; }}, + mem_flags = [], inst_flags = []) {{ + (header_output, decoder_output, decode_block, exec_output) = \ + GenMemOp(name, Name, memacc_code, ea_code, ea_code_ra0, + 'MemOp', 'Load', mem_flags, inst_flags) +}}; + + +def format StoreIndexOp(memacc_code, ea_code = {{ EA = Ra + Rb; }}, + ea_code_ra0 = {{ EA = Rb; }}, + mem_flags = [], inst_flags = []) {{ + (header_output, decoder_output, decode_block, exec_output) = \ + GenMemOp(name, Name, memacc_code, ea_code, ea_code_ra0, + 'MemOp', 'Store', mem_flags, inst_flags) +}}; + + +def format LoadIndexUpdateOp(memacc_code, ea_code = {{ EA = Ra + Rb; }}, + mem_flags = [], inst_flags = []) {{ + + # Add in the update code + memacc_code += 'Ra = EA;' + + # Generate the class + (header_output, decoder_output, decode_block, exec_output) = \ + LoadStoreBase(name, Name, ea_code, memacc_code, mem_flags, inst_flags, + base_class = 'MemOp', + exec_template_base = 'Load') +}}; + + +def format StoreIndexUpdateOp(memacc_code, ea_code = {{ EA = Ra + Rb; }}, + mem_flags = [], inst_flags = []) {{ + + # Add in the update code + memacc_code += 'Ra = EA;' + + # Generate the class + (header_output, decoder_output, decode_block, exec_output) = \ + LoadStoreBase(name, Name, ea_code, memacc_code, mem_flags, inst_flags, + base_class = 'MemOp', + exec_template_base = 'Store') +}}; + + +def format LoadDispOp(memacc_code, ea_code = {{ EA = Ra + disp; }}, + ea_code_ra0 = {{ EA = disp; }}, + mem_flags = [], inst_flags = []) {{ + (header_output, decoder_output, decode_block, exec_output) = \ + GenMemOp(name, Name, memacc_code, ea_code, ea_code_ra0, + 'MemDispOp', 'Load', mem_flags, inst_flags) +}}; + + +def format StoreDispOp(memacc_code, ea_code = {{ EA = Ra + disp; }}, + ea_code_ra0 = {{ EA = disp; }}, + mem_flags = [], inst_flags = []) {{ + (header_output, decoder_output, decode_block, exec_output) = \ + GenMemOp(name, Name, memacc_code, ea_code, ea_code_ra0, + 'MemDispOp', 'Store', mem_flags, inst_flags) +}}; + + +def format LoadDispUpdateOp(memacc_code, ea_code = {{ EA = Ra + disp; }}, + mem_flags = [], inst_flags = []) {{ + + # Add in the update code + memacc_code += 'Ra = EA;' + + # Generate the class + (header_output, decoder_output, decode_block, exec_output) = \ + LoadStoreBase(name, Name, ea_code, memacc_code, mem_flags, inst_flags, + base_class = 'MemDispOp', + exec_template_base = 'Load') +}}; + + +def format StoreDispUpdateOp(memacc_code, ea_code = {{ EA = Ra + disp; }}, + mem_flags = [], inst_flags = []) {{ + + # Add in the update code + memacc_code += 'Ra = EA;' + + # Generate the class + (header_output, decoder_output, decode_block, exec_output) = \ + LoadStoreBase(name, Name, ea_code, memacc_code, mem_flags, inst_flags, + base_class = 'MemDispOp', + exec_template_base = 'Store') +}}; -- cgit v1.2.3