| // 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. |
| |
| // Basic instruction class declaration template. |
| def template BasicDeclare {{ |
| /** |
| * Static instruction class for "%(mnemonic)s". |
| */ |
| class %(class_name)s : public %(base_class)s |
| { |
| private: |
| %(reg_idx_arr_decl)s; |
| |
| public: |
| // Constructor. |
| %(class_name)s(ExtMachInst machInst); |
| Fault execute(ExecContext *, Trace::InstRecord *) const override; |
| }; |
| }}; |
| |
| // Basic instruction class declaration template. |
| def template FpBasicDeclare {{ |
| /** |
| * Static instruction class for "%(mnemonic)s". |
| */ |
| class %(class_name)s : public %(base_class)s |
| { |
| private: |
| %(reg_idx_arr_decl)s; |
| |
| public: |
| // Constructor. |
| %(class_name)s(ExtMachInst machInst); |
| Fault execute(ExecContext *, Trace::InstRecord *) const override; |
| GEM5_NO_INLINE Fault doFpOp(ExecContext *, Trace::InstRecord *) const; |
| }; |
| }}; |
| |
| // Basic instruction class declaration template. |
| def template BasicDeclareWithMnemonic {{ |
| /** |
| * Static instruction class for "%(mnemonic)s". |
| */ |
| class %(class_name)s : public %(base_class)s |
| { |
| private: |
| %(reg_idx_arr_decl)s; |
| |
| public: |
| // Constructor. |
| %(class_name)s(const char *mnemonic, ExtMachInst machInst); |
| Fault execute(ExecContext *, Trace::InstRecord *) const override; |
| }; |
| }}; |
| |
| // Basic instruction class constructor template. |
| def template BasicConstructor {{ |
| %(class_name)s::%(class_name)s(ExtMachInst machInst) : |
| %(base_class)s("%(mnemonic)s", machInst, %(op_class)s) |
| { |
| %(set_reg_idx_arr)s; |
| %(constructor)s; |
| } |
| }}; |
| |
| // Basic instruction class constructor template. |
| def template BasicConstructorWithMnemonic {{ |
| %(class_name)s::%(class_name)s(const char *mnemonic, ExtMachInst machInst) : |
| %(base_class)s(mnemonic, machInst, %(op_class)s) |
| { |
| %(set_reg_idx_arr)s; |
| %(constructor)s; |
| } |
| }}; |
| |
| // Basic instruction class execute method template. |
| def template BasicExecute {{ |
| Fault |
| %(class_name)s::execute(ExecContext *xc, |
| Trace::InstRecord *traceData) const |
| { |
| Fault fault = NoFault; |
| |
| %(op_decl)s; |
| %(op_rd)s; |
| %(code)s; |
| |
| if (fault == NoFault) { |
| %(op_wb)s; |
| } |
| return fault; |
| } |
| }}; |
| |
| // Basic instruction class execute method template. |
| def template FpExecute {{ |
| Fault |
| %(class_name)s::execute(ExecContext *xc, |
| Trace::InstRecord *traceData) const |
| { |
| Fault fault = NoFault; |
| |
| %(fp_enable_check)s; |
| %(op_decl)s; |
| %(op_rd)s; |
| %(code)s; |
| |
| if (fault == NoFault) { |
| %(op_wb)s; |
| } |
| return fault; |
| } |
| }}; |
| |
| def template DoFpOpExecute {{ |
| Fault |
| %(class_name)s::doFpOp(ExecContext *xc, Trace::InstRecord *traceData) const |
| { |
| Fault fault = NoFault; |
| %(op_decl)s; |
| %(op_rd)s; |
| %(fp_code)s; |
| if (fault == NoFault) { |
| %(op_wb)s; |
| } |
| return fault; |
| } |
| }}; |
| |
| // Basic decode template. |
| def template BasicDecode {{ |
| return new %(class_name)s(machInst); |
| }}; |
| |
| // Basic decode template, passing mnemonic in as string arg to constructor. |
| def template BasicDecodeWithMnemonic {{ |
| return new %(class_name)s("%(mnemonic)s", machInst); |
| }}; |
| |
| // The most basic instruction format... used only for a few misc. insts |
| def format BasicOperate(code, *flags) {{ |
| code = filterDoubles(code) |
| iop = InstObjParams(name, Name, 'SparcStaticInst', code, flags) |
| header_output = BasicDeclare.subst(iop) |
| decoder_output = BasicConstructor.subst(iop) |
| decode_block = BasicDecode.subst(iop) |
| exec_output = BasicExecute.subst(iop) |
| |
| }}; |
| |
| let {{ |
| fp_enabled = 'fault = checkFpEnabled(Pstate, Fprs);' |
| }}; |
| |
| def format FpBasic(code, *flags) {{ |
| exec_code = """ |
| Fsr |= bits(Fsr, 4, 0) << 5; |
| Fsr = insertBits(Fsr, 4, 0, 0); |
| gem5::RoundingMode newrnd = gem5::RoundingMode::ToNearest; |
| switch (Fsr<31:30>) { |
| case 0: |
| newrnd = gem5::RoundingMode::ToNearest; |
| break; |
| case 1: |
| newrnd = gem5::RoundingMode::TowardZero; |
| break; |
| case 2: |
| newrnd = gem5::RoundingMode::Upward; |
| break; |
| case 3: |
| newrnd = gem5::RoundingMode::Downward; |
| break; |
| } |
| gem5::RoundingMode oldrnd = gem5::getFpRound(); |
| gem5::setFpRound(newrnd); |
| __asm__ __volatile__("" ::: "memory"); |
| fault = doFpOp(xc, traceData); |
| __asm__ __volatile__("" ::: "memory"); |
| gem5::setFpRound(oldrnd); |
| return fault; |
| """ |
| fp_code = filterDoubles(code) |
| iop = InstObjParams(name, Name, 'SparcStaticInst', |
| { "code" : exec_code, |
| "fp_code" : fp_code, |
| "fp_enabled" : fp_enabled }, flags) |
| header_output = FpBasicDeclare.subst(iop) |
| decoder_output = BasicConstructor.subst(iop) |
| decode_block = BasicDecode.subst(iop) |
| exec_output = BasicExecute.subst(iop) |
| exec_output += DoFpOpExecute.subst(iop) |
| }}; |