| /* |
| * Copyright (c) 2003-2005 The Regents of The University of Michigan |
| * Copyright (c) 2007 MIPS Technologies, Inc. |
| * 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 |
| * Korey Sewell |
| * Jaidev Patwardhan |
| */ |
| |
| #ifndef __ARCH_MIPS_ISA_TRAITS_HH__ |
| #define __ARCH_MIPS_ISA_TRAITS_HH__ |
| |
| #include "arch/mips/types.hh" |
| #include "arch/mips/mips_core_specific.hh" |
| #include "base/types.hh" |
| #include "config/full_system.hh" |
| |
| namespace LittleEndianGuest {}; |
| |
| #define TARGET_MIPS |
| |
| class StaticInstPtr; |
| |
| namespace MipsISA |
| { |
| using namespace LittleEndianGuest; |
| |
| StaticInstPtr decodeInst(ExtMachInst); |
| |
| // MIPS DOES have a delay slot |
| #define ISA_HAS_DELAY_SLOT 1 |
| |
| const Addr PageShift = 13; |
| const Addr PageBytes = ULL(1) << PageShift; |
| const Addr Page_Mask = ~(PageBytes - 1); |
| const Addr PageOffset = PageBytes - 1; |
| |
| |
| //////////////////////////////////////////////////////////////////////// |
| // |
| // Translation stuff |
| // |
| |
| const Addr PteShift = 3; |
| const Addr NPtePageShift = PageShift - PteShift; |
| const Addr NPtePage = ULL(1) << NPtePageShift; |
| const Addr PteMask = NPtePage - 1; |
| |
| //// All 'Mapped' segments go through the TLB |
| //// All other segments are translated by dropping the MSB, to give |
| //// the corresponding physical address |
| // User Segment - Mapped |
| const Addr USegBase = ULL(0x0); |
| const Addr USegEnd = ULL(0x7FFFFFFF); |
| |
| // Kernel Segment 0 - Unmapped |
| const Addr KSeg0End = ULL(0x9FFFFFFF); |
| const Addr KSeg0Base = ULL(0x80000000); |
| const Addr KSeg0Mask = ULL(0x1FFFFFFF); |
| |
| // Kernel Segment 1 - Unmapped, Uncached |
| const Addr KSeg1End = ULL(0xBFFFFFFF); |
| const Addr KSeg1Base = ULL(0xA0000000); |
| const Addr KSeg1Mask = ULL(0x1FFFFFFF); |
| |
| // Kernel/Supervisor Segment - Mapped |
| const Addr KSSegEnd = ULL(0xDFFFFFFF); |
| const Addr KSSegBase = ULL(0xC0000000); |
| |
| // Kernel Segment 3 - Mapped |
| const Addr KSeg3End = ULL(0xFFFFFFFF); |
| const Addr KSeg3Base = ULL(0xE0000000); |
| |
| |
| // For loading... XXX This maybe could be USegEnd?? --ali |
| const Addr LoadAddrMask = ULL(0xffffffffff); |
| |
| inline Addr Phys2K0Seg(Addr addr) |
| { |
| // if (addr & PAddrUncachedBit43) { |
| // addr &= PAddrUncachedMask; |
| // addr |= PAddrUncachedBit40; |
| // } |
| return addr | KSeg0Base; |
| } |
| |
| |
| const unsigned VABits = 32; |
| const unsigned PABits = 32; // Is this correct? |
| const Addr VAddrImplMask = (ULL(1) << VABits) - 1; |
| const Addr VAddrUnImplMask = ~VAddrImplMask; |
| inline Addr VAddrImpl(Addr a) { return a & VAddrImplMask; } |
| inline Addr VAddrVPN(Addr a) { return a >> MipsISA::PageShift; } |
| inline Addr VAddrOffset(Addr a) { return a & MipsISA::PageOffset; } |
| |
| const Addr PAddrImplMask = (ULL(1) << PABits) - 1; |
| |
| //////////////////////////////////////////////////////////////////////// |
| // |
| // Interrupt levels |
| // |
| enum InterruptLevels |
| { |
| INTLEVEL_SOFTWARE_MIN = 4, |
| INTLEVEL_SOFTWARE_MAX = 19, |
| |
| INTLEVEL_EXTERNAL_MIN = 20, |
| INTLEVEL_EXTERNAL_MAX = 34, |
| |
| INTLEVEL_IRQ0 = 20, |
| INTLEVEL_IRQ1 = 21, |
| INTINDEX_ETHERNET = 0, |
| INTINDEX_SCSI = 1, |
| INTLEVEL_IRQ2 = 22, |
| INTLEVEL_IRQ3 = 23, |
| |
| INTLEVEL_SERIAL = 33, |
| |
| NumInterruptLevels = INTLEVEL_EXTERNAL_MAX |
| }; |
| |
| |
| // MIPS modes |
| enum mode_type |
| { |
| mode_kernel = 0, // kernel |
| mode_supervisor = 1, // supervisor |
| mode_user = 2, // user mode |
| mode_debug = 3, // debug mode |
| mode_number // number of modes |
| }; |
| |
| inline mode_type getOperatingMode(MiscReg Stat) |
| { |
| if((Stat & 0x10000006) != 0 || (Stat & 0x18) ==0) |
| return mode_kernel; |
| else{ |
| if((Stat & 0x18) == 0x8) |
| return mode_supervisor; |
| else if((Stat & 0x18) == 0x10) |
| return mode_user; |
| else return mode_number; |
| } |
| } |
| |
| |
| // return a no-op instruction... used for instruction fetch faults |
| const ExtMachInst NoopMachInst = 0x00000000; |
| |
| // Constants Related to the number of registers |
| const int NumIntArchRegs = 32; |
| const int NumIntSpecialRegs = 9; |
| const int NumFloatArchRegs = 32; |
| const int NumFloatSpecialRegs = 5; |
| |
| const int MaxShadowRegSets = 16; // Maximum number of shadow register sets |
| const int NumIntRegs = NumIntArchRegs + NumIntSpecialRegs; //HI & LO Regs |
| const int NumFloatRegs = NumFloatArchRegs + NumFloatSpecialRegs;// |
| |
| // Static instruction parameters |
| const int MaxInstSrcRegs = 10; |
| const int MaxInstDestRegs = 8; |
| |
| // semantically meaningful register indices |
| const int ZeroReg = 0; |
| const int AssemblerReg = 1; |
| const int SyscallSuccessReg = 7; |
| const int FirstArgumentReg = 4; |
| const int ReturnValueReg = 2; |
| |
| const int KernelReg0 = 26; |
| const int KernelReg1 = 27; |
| const int GlobalPointerReg = 28; |
| const int StackPointerReg = 29; |
| const int FramePointerReg = 30; |
| const int ReturnAddressReg = 31; |
| |
| const int SyscallPseudoReturnReg = 3; |
| |
| const int LogVMPageSize = 13; // 8K bytes |
| const int VMPageSize = (1 << LogVMPageSize); |
| |
| const int BranchPredAddrShiftAmt = 2; // instructions are 4-byte aligned |
| |
| const int MachineBytes = 4; |
| const int WordBytes = 4; |
| const int HalfwordBytes = 2; |
| const int ByteBytes = 1; |
| |
| const int ANNOTE_NONE = 0; |
| const uint32_t ITOUCH_ANNOTE = 0xffffffff; |
| |
| // These help enumerate all the registers for dependence tracking. |
| const int FP_Base_DepTag = NumIntRegs; |
| const int Ctrl_Base_DepTag = FP_Base_DepTag + NumFloatRegs; |
| |
| // Enumerate names for 'Control' Registers in the CPU |
| // Reference MIPS32 Arch. for Programmers, Vol. III, Ch.8 |
| // (Register Number-Register Select) Summary of Register |
| //------------------------------------------------------ |
| // The first set of names classify the CP0 names as Register Banks |
| // for easy indexing when using the 'RD + SEL' index combination |
| // in CP0 instructions. |
| enum MiscRegTags { |
| Index = Ctrl_Base_DepTag + 0, //Bank 0: 0 - 3 |
| MVPControl, |
| MVPConf0, |
| MVPConf1, |
| |
| CP0_Random = Ctrl_Base_DepTag + 8, //Bank 1: 8 - 15 |
| VPEControl, |
| VPEConf0, |
| VPEConf1, |
| YQMask, |
| VPESchedule, |
| VPEScheFBack, |
| VPEOpt, |
| |
| EntryLo0 = Ctrl_Base_DepTag + 16, //Bank 2: 16 - 23 |
| TCStatus, |
| TCBind, |
| TCRestart, |
| TCHalt, |
| TCContext, |
| TCSchedule, |
| TCScheFBack, |
| |
| EntryLo1 = Ctrl_Base_DepTag + 24, // Bank 3: 24 |
| |
| Context = Ctrl_Base_DepTag + 32, // Bank 4: 32 - 33 |
| ContextConfig, |
| |
| PageMask = Ctrl_Base_DepTag + 40, //Bank 5: 40 - 41 |
| PageGrain = Ctrl_Base_DepTag + 41, |
| |
| Wired = Ctrl_Base_DepTag + 48, //Bank 6:48-55 |
| SRSConf0, |
| SRSConf1, |
| SRSConf2, |
| SRSConf3, |
| SRSConf4, |
| |
| HWRena = Ctrl_Base_DepTag + 56, //Bank 7: 56-63 |
| |
| BadVAddr = Ctrl_Base_DepTag + 64, //Bank 8: 64-71 |
| |
| Count = Ctrl_Base_DepTag + 72, //Bank 9: 72-79 |
| |
| EntryHi = Ctrl_Base_DepTag + 80, //Bank 10: 80-87 |
| |
| Compare = Ctrl_Base_DepTag + 88, //Bank 11: 88-95 |
| |
| Status = Ctrl_Base_DepTag + 96, //Bank 12: 96-103 |
| IntCtl, |
| SRSCtl, |
| SRSMap, |
| |
| Cause = Ctrl_Base_DepTag + 104, //Bank 13: 104-111 |
| |
| EPC = Ctrl_Base_DepTag + 112, //Bank 14: 112-119 |
| |
| PRId = Ctrl_Base_DepTag + 120, //Bank 15: 120-127, |
| EBase, |
| |
| Config = Ctrl_Base_DepTag + 128, //Bank 16: 128-135 |
| Config1, |
| Config2, |
| Config3, |
| Config4, |
| Config5, |
| Config6, |
| Config7, |
| |
| |
| LLAddr = Ctrl_Base_DepTag + 136, //Bank 17: 136-143 |
| |
| WatchLo0 = Ctrl_Base_DepTag + 144, //Bank 18: 144-151 |
| WatchLo1, |
| WatchLo2, |
| WatchLo3, |
| WatchLo4, |
| WatchLo5, |
| WatchLo6, |
| WatchLo7, |
| |
| WatchHi0 = Ctrl_Base_DepTag + 152, //Bank 19: 152-159 |
| WatchHi1, |
| WatchHi2, |
| WatchHi3, |
| WatchHi4, |
| WatchHi5, |
| WatchHi6, |
| WatchHi7, |
| |
| XCContext64 = Ctrl_Base_DepTag + 160, //Bank 20: 160-167 |
| |
| //Bank 21: 168-175 |
| |
| //Bank 22: 176-183 |
| |
| Debug = Ctrl_Base_DepTag + 184, //Bank 23: 184-191 |
| TraceControl1, |
| TraceControl2, |
| UserTraceData, |
| TraceBPC, |
| |
| DEPC = Ctrl_Base_DepTag + 192, //Bank 24: 192-199 |
| |
| PerfCnt0 = Ctrl_Base_DepTag + 200, //Bank 25: 200-207 |
| PerfCnt1, |
| PerfCnt2, |
| PerfCnt3, |
| PerfCnt4, |
| PerfCnt5, |
| PerfCnt6, |
| PerfCnt7, |
| |
| ErrCtl = Ctrl_Base_DepTag + 208, //Bank 26: 208-215 |
| |
| CacheErr0 = Ctrl_Base_DepTag + 216, //Bank 27: 216-223 |
| CacheErr1, |
| CacheErr2, |
| CacheErr3, |
| |
| TagLo0 = Ctrl_Base_DepTag + 224, //Bank 28: 224-231 |
| DataLo1, |
| TagLo2, |
| DataLo3, |
| TagLo4, |
| DataLo5, |
| TagLo6, |
| DataLo7, |
| |
| TagHi0 = Ctrl_Base_DepTag + 232, //Bank 29: 232-239 |
| DataHi1, |
| TagHi2, |
| DataHi3, |
| TagHi4, |
| DataHi5, |
| TagHi6, |
| DataHi7, |
| |
| |
| ErrorEPC = Ctrl_Base_DepTag + 240, //Bank 30: 240-247 |
| |
| DESAVE = Ctrl_Base_DepTag + 248, //Bank 31: 248-256 |
| |
| LLFlag = Ctrl_Base_DepTag + 257, |
| |
| NumControlRegs |
| }; |
| |
| const int TotalDataRegs = NumIntRegs + NumFloatRegs; |
| |
| const int NumMiscRegs = NumControlRegs; |
| |
| const int TotalNumRegs = NumIntRegs + NumFloatRegs + NumMiscRegs; |
| |
| |
| }; |
| |
| #endif // __ARCH_MIPS_ISA_TRAITS_HH__ |