gem5/arch/mips/isa_traits.cc
Korey Sewell 2d077df1a0 More Modest Changes for FP MIPS execution...
arch/mips/isa/decoder.isa:
    Fix Reg. Operands for FP Conversion Instructions - Must Make Sure That You use 'uw' or 'ud' as needed.
arch/mips/isa_traits.cc:
    if a conversion function isnt implemented yet, than have M5 panic...
    (plan to implement SINGLE_TO_DOUBLE first)

--HG--
extra : convert_revision : 6a7f703a5d65139d3981a8753c31fc8f5bf313cf
2006-04-28 03:05:11 -04:00

377 lines
9.1 KiB
C++

/*
* Copyright (c) 2003-2005 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.
*/
#include "arch/mips/isa_traits.hh"
#include "config/full_system.hh"
#include "cpu/static_inst.hh"
#include "sim/serialize.hh"
using namespace MipsISA;
uint64_t
MipsISA::convert_and_round(uint64_t fp_val, ConvertType cvt_type, int rnd_mode)
{
uint64_t ret_val = 0;
switch (cvt_type)
{
case SINGLE_TO_DOUBLE:
break;
default:
panic("Invalid Floating Point Conversion Type (%d) being used.\n",cvt_type);
}
return ret_val;
}
void
MipsISA::copyRegs(ExecContext *src, ExecContext *dest)
{
/*fpcr = xc->readMiscReg(MipsISA::Fpcr_DepTag);
uniq = xc->readMiscReg(MipsISA::Uniq_DepTag);
lock_flag = xc->readMiscReg(MipsISA::Lock_Flag_DepTag);
lock_addr = xc->readMiscReg(MipsISA::Lock_Addr_DepTag);
#if FULL_SYSTEM
copyIprs(xc);
#endif*/
}
void
MipsISA::MiscRegFile::copyMiscRegs(ExecContext *xc)
{
/*fpcr = xc->readMiscReg(MipsISA::Fpcr_DepTag);
uniq = xc->readMiscReg(MipsISA::Uniq_DepTag);
lock_flag = xc->readMiscReg(MipsISA::Lock_Flag_DepTag);
lock_addr = xc->readMiscReg(MipsISA::Lock_Addr_DepTag);
#if FULL_SYSTEM
copyIprs(xc);
#endif*/
}
void MipsISA::RegFile::coldReset()
{
//CP0 Random Reg:
//Randomly generated index into the TLB array
/*miscRegs[Random] = 0x0000003f;
//CP0 Wired Reg.
miscRegs[Wired] = 0x0000000;
//CP0 HWRENA
miscRegs[HWRena] = 0x0000000;
//CP0 Status Reg.
miscRegs[Status] = 0x0400004;
//CP0 INTCNTL
miscRegs[IntCtl] = 0xfc00000;
//CP0 SRSCNTL
miscRegs[SRSCtl] = 0x0c00000;
//CP0 SRSMAP
miscRegs[SRSMap] = 0x0000000;
//CP0 Cause
miscRegs[Cause] = 0x0000000;
//CP0 Processor ID
miscRegs[PrId] = 0x0019300;
//CP0 EBASE
miscRegs[EBase] = 0x8000000;
//CP0 Config Reg.
miscRegs[Config] = 0x80040482;
//CP0 Config 1 Reg.
miscRegs[Config1] = 0xfee3719e;
//CP0 Config 2 Reg.
miscRegs[Config2] = 0x8000000;
//CP0 Config 3 Reg.
miscRegs[Config3] = 0x0000020;
//CP0 Config 7 Reg.
miscRegs[Config7] = 0x0000000;
//CP0 Debug
miscRegs[Debug] = 0x0201800;
//CP0 PERFCNTL1
miscRegs[PerfCnt0] = 0x0000000;
//CP0 PERFCNTL2
miscRegs[PerfCnt1] = 0x0000000;*/
}
void RegFile::createCP0Regs()
{
//Resize Coprocessor Register Banks to
// the number specified in MIPS32K VOL.III
// Chapter 8
/*
//Cop-0 Regs. Bank 0: Index,
miscRegs[0].resize(4);
//Cop-0 Regs. Bank 1:
miscRegs[1].resize(8);
//Cop-0 Regs. Bank 2:
miscRegs[2].resize(8);
//Cop-0 Regs. Bank 3:
miscRegs[3].resize(1);
//Cop-0 Regs. Bank 4:
miscRegs[4].resize(2);
//Cop-0 Regs. Bank 5:
miscRegs[5].resize(2);
//Cop-0 Regs. Bank 6:
miscRegs[6].resize(6);
//Cop-0 Regs. Bank 7:
miscRegs[7].resize(1);
//Cop-0 Regs. Bank 8:
miscRegs[8].resize(1);
//Cop-0 Regs. Bank 9:
miscRegs[9].resize(1);
//Cop-0 Regs. Bank 10:
miscRegs[10].resize(1);
//Cop-0 Regs. Bank 11:
miscRegs[11].resize(1);
//Cop-0 Regs. Bank 12:
miscRegs[12].resize(4);
//Cop-0 Regs. Bank 13:
miscRegs[13].resize(1);
//Cop-0 Regs. Bank 14:
miscRegs[14].resize(1);
//Cop-0 Regs. Bank 15:
miscRegs[15].resize(2);
//Cop-0 Regs. Bank 16:
miscRegs[16].resize(4);
//Cop-0 Regs. Bank 17:
miscRegs[17].resize(1);
//Cop-0 Regs. Bank 18:
miscRegs[18].resize(8);
//Cop-0 Regs. Bank 19:
miscRegs[19].resize(8);
//Cop-0 Regs. Bank 20:
miscRegs[20].resize(1);
case PerfCnt0: panic("Accessing Unimplemented CP0 Register"); break;
case PerfCnt1: panic("Accessing Unimplemented CP0 Register"); break;
case PerfCnt2: panic("Accessing Unimplemented CP0 Register"); break;
case PerfCnt3: panic("Accessing Unimplemented CP0 Register"); break;
//Cop-0 Regs. Bank 21:
//miscRegs[21].resize(1);
//Reserved for future extensions
//Cop-0 Regs. Bank 22:
//miscRegs[22].resize(4);
//Available for implementation dependent use
//Cop-0 Regs. Bank 23:
miscRegs[23].resize(5);
//Cop-0 Regs. Bank 24:
miscRegs[24].resize(1);
//Cop-0 Regs. Bank 25:
miscRegs[25].resize(8);
//Cop-0 Regs. Bank 26:
miscRegs[26].resize(1);
//Cop-0 Regs. Bank 27:
miscRegs[27].resize(4);
//Cop-0 Regs. Bank 28:
miscRegs[28].resize(8);
//Cop-0 Regs. Bank 29:
miscRegs[29].resize(8);
//Cop-0 Regs. Bank 30:
miscRegs[30].resize(1);
//Cop-0 Regs. Bank 31:
miscRegs[31].resize(1);*/
}
const Addr MipsISA::PageShift = 13;
const Addr MipsISA::PageBytes = ULL(1) << PageShift;
const Addr MipsISA::PageMask = ~(PageBytes - 1);
const Addr MipsISA::PageOffset = PageBytes - 1;
#if FULL_SYSTEM
////////////////////////////////////////////////////////////////////////
//
// Translation stuff
//
const Addr MipsISA::PteShift = 3;
const Addr MipsISA::NPtePageShift = PageShift - PteShift;
const Addr MipsISA::NPtePage = ULL(1) << NPtePageShift;
const Addr MipsISA::PteMask = NPtePage - 1;
// User Virtual
const Addr MipsISA::USegBase = ULL(0x0);
const Addr MipsISA::USegEnd = ULL(0x000003ffffffffff);
// Kernel Direct Mapped
const Addr MipsISA::K0SegBase = ULL(0xfffffc0000000000);
const Addr MipsISA::K0SegEnd = ULL(0xfffffdffffffffff);
// Kernel Virtual
const Addr MipsISA::K1SegBase = ULL(0xfffffe0000000000);
const Addr MipsISA::K1SegEnd = ULL(0xffffffffffffffff);
#endif
// Mips UNOP (sll r0,r0,r0)
const MachInst MipsISA::NoopMachInst = 0x00000000;
static inline Addr
TruncPage(Addr addr)
{ return addr & ~(MipsISA::PageBytes - 1); }
static inline Addr
RoundPage(Addr addr)
{ return (addr + MipsISA::PageBytes - 1) & ~(MipsISA::PageBytes - 1); }
void
IntRegFile::serialize(std::ostream &os)
{
SERIALIZE_ARRAY(regs, NumIntRegs);
}
void
IntRegFile::unserialize(Checkpoint *cp, const std::string &section)
{
UNSERIALIZE_ARRAY(regs, NumIntRegs);
}
void
RegFile::serialize(std::ostream &os)
{
intRegFile.serialize(os);
//SERIALIZE_ARRAY(floatRegFile.q, NumFloatRegs);
//SERIALIZE_SCALAR(miscRegs.fpcr);
//SERIALIZE_SCALAR(miscRegs.uniq);
//SERIALIZE_SCALAR(miscRegs.lock_flag);
//SERIALIZE_SCALAR(miscRegs.lock_addr);
SERIALIZE_SCALAR(pc);
SERIALIZE_SCALAR(npc);
SERIALIZE_SCALAR(nnpc);
#if FULL_SYSTEM
SERIALIZE_ARRAY(palregs, NumIntRegs);
SERIALIZE_ARRAY(ipr, NumInternalProcRegs);
SERIALIZE_SCALAR(intrflag);
SERIALIZE_SCALAR(pal_shadow);
#endif
}
void
RegFile::unserialize(Checkpoint *cp, const std::string &section)
{
intRegFile.unserialize(cp, section);
//UNSERIALIZE_ARRAY(floatRegFile.q, NumFloatRegs);
//UNSERIALIZE_SCALAR(miscRegs.fpcr);
//UNSERIALIZE_SCALAR(miscRegs.uniq);
//UNSERIALIZE_SCALAR(miscRegs.lock_flag);
//UNSERIALIZE_SCALAR(miscRegs.lock_addr);
UNSERIALIZE_SCALAR(pc);
UNSERIALIZE_SCALAR(npc);
UNSERIALIZE_SCALAR(nnpc);
#if FULL_SYSTEM
UNSERIALIZE_ARRAY(palregs, NumIntRegs);
UNSERIALIZE_ARRAY(ipr, NumInternalProcRegs);
UNSERIALIZE_SCALAR(intrflag);
UNSERIALIZE_SCALAR(pal_shadow);
#endif
}
#if FULL_SYSTEM
void
PTE::serialize(std::ostream &os)
{
SERIALIZE_SCALAR(tag);
SERIALIZE_SCALAR(ppn);
SERIALIZE_SCALAR(xre);
SERIALIZE_SCALAR(xwe);
SERIALIZE_SCALAR(asn);
SERIALIZE_SCALAR(asma);
SERIALIZE_SCALAR(fonr);
SERIALIZE_SCALAR(fonw);
SERIALIZE_SCALAR(valid);
}
void
PTE::unserialize(Checkpoint *cp, const std::string &section)
{
UNSERIALIZE_SCALAR(tag);
UNSERIALIZE_SCALAR(ppn);
UNSERIALIZE_SCALAR(xre);
UNSERIALIZE_SCALAR(xwe);
UNSERIALIZE_SCALAR(asn);
UNSERIALIZE_SCALAR(asma);
UNSERIALIZE_SCALAR(fonr);
UNSERIALIZE_SCALAR(fonw);
UNSERIALIZE_SCALAR(valid);
}
#endif //FULL_SYSTEM