gem5/arch/mips/isa_traits.hh
Korey Sewell 5afed24e1c Changes that get rid of the OSFlags and derive a new class of this format <architecture>-<OS>.
This class is derived from the original <OS> class and is used to define information that
is both architecure and OS specific (for example, the AlphaLinux class is derived from the
Linux class and defined in arch/alpha/linux/linux.hh).

SConscript:
    no need to compile linux.cc and tru64.cc now, since openFlagsTable has been moved
arch/alpha/SConscript:
    compile linux.cc and tru64.cc within alpha arch.
arch/alpha/linux/process.cc:
    template syscall functions on AlphaLinux instead of Linux ... AlphaLinux is derived off of Linux
arch/alpha/tru64/process.cc:
    template syscall functions on AlphaTru64 instead of Linux ... AlphaTru64 is derived off of Linux
    moved tableFunc syscall function into this file
arch/mips/SConscript:
    compile mips_linux.cc for openFlags table
arch/mips/isa_traits.hh:
    remove constants from here
arch/mips/linux_process.cc:
    template syscall functions on MipsLinux instead of Linux ... MipsLinux is derived off of Linux
kern/linux/linux.hh:
    remove OSFlags
kern/tru64/tru64.hh:
    remove OSFlags def., openFlagTable, and tableFunc ...
sim/syscall_emul.hh:
    go back to using "OS" instead of "OSFlags"
arch/alpha/linux/linux.cc:
    defines openFlagTable
arch/alpha/linux/linux.hh:
arch/alpha/tru64/tru64.hh:
    Alpha Linux constants placed here in class derived from Linux class
arch/alpha/tru64/tru64.cc:
    defines openFlagTable for AlphaTru64
arch/mips/mips_linux.cc:
    MIPS Linux open flag table
arch/mips/mips_linux.hh:
    Mips Linux constants placed here in class derived from Linux class

--HG--
extra : convert_revision : e6c1c2c895429c28fd141732e223e897ab19315e
2006-04-13 05:42:18 -04:00

772 lines
21 KiB
C++
Raw Blame History

/*
* 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.
*/
#ifndef __ARCH_MIPS_ISA_TRAITS_HH__
#define __ARCH_MIPS_ISA_TRAITS_HH__
//#include "arch/mips/misc_regfile.hh"
#include "base/misc.hh"
#include "config/full_system.hh"
#include "sim/host.hh"
#include "sim/faults.hh"
#include <vector>
class FastCPU;
class FullCPU;
class Checkpoint;
class ExecContext;
namespace LittleEndianGuest {};
#define TARGET_MIPS
class StaticInst;
class StaticInstPtr;
namespace MIPS34K {
int DTB_ASN_ASN(uint64_t reg);
int ITB_ASN_ASN(uint64_t reg);
};
#if !FULL_SYSTEM
class SyscallReturn {
public:
template <class T>
SyscallReturn(T v, bool s)
{
retval = (uint32_t)v;
success = s;
}
template <class T>
SyscallReturn(T v)
{
success = (v >= 0);
retval = (uint32_t)v;
}
~SyscallReturn() {}
SyscallReturn& operator=(const SyscallReturn& s) {
retval = s.retval;
success = s.success;
return *this;
}
bool successful() { return success; }
uint64_t value() { return retval; }
private:
uint64_t retval;
bool success;
};
#endif
namespace MipsISA
{
using namespace LittleEndianGuest;
typedef uint32_t MachInst;
typedef uint32_t MachInst;
typedef uint64_t ExtMachInst;
typedef uint8_t RegIndex;
// typedef uint64_t Addr;
// Constants Related to the number of registers
const int NumIntArchRegs = 32;
const int NumPALShadowRegs = 8;
const int NumFloatArchRegs = 32;
// @todo: Figure out what this number really should be.
const int NumMiscArchRegs = 32;
const int NumIntRegs = NumIntArchRegs + NumPALShadowRegs;
const int NumFloatRegs = NumFloatArchRegs;
const int NumMiscRegs = NumMiscArchRegs;
const int TotalNumRegs = NumIntRegs + NumFloatRegs +
NumMiscRegs + 0/*NumInternalProcRegs*/;
const int TotalDataRegs = NumIntRegs + NumFloatRegs;
// Static instruction parameters
const int MaxInstSrcRegs = 3;
const int MaxInstDestRegs = 2;
// semantically meaningful register indices
const int ZeroReg = 0;
const int AssemblerReg = 1;
const int ReturnValueReg1 = 2;
const int ReturnValueReg2 = 3;
const int ArgumentReg0 = 4;
const int ArgumentReg1 = 5;
const int ArgumentReg2 = 6;
const int ArgumentReg3 = 7;
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 SyscallNumReg = ReturnValueReg1;
const int SyscallPseudoReturnReg = ReturnValueReg1;
const int SyscallSuccessReg = ArgumentReg3;
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;
// These enumerate all the registers for dependence tracking.
enum DependenceTags {
// 0..31 are the integer regs 0..31
// 32..63 are the FP regs 0..31, i.e. use (reg + FP_Base_DepTag)
FP_Base_DepTag = 32,
Ctrl_Base_DepTag = 64,
Fpcr_DepTag = 64, // floating point control register
Uniq_DepTag = 65,
IPR_Base_DepTag = 66,
MiscReg_DepTag = 67
};
typedef uint64_t IntReg;
class IntRegFile
{
protected:
IntReg regs[NumIntRegs];
public:
IntReg readReg(int intReg)
{
return regs[intReg];
}
Fault setReg(int intReg, const IntReg &val)
{
regs[intReg] = val;
return NoFault;
}
void serialize(std::ostream &os);
void unserialize(Checkpoint *cp, const std::string &section);
};
typedef double FloatReg;
typedef uint64_t FloatRegBits;
class FloatRegFile
{
protected:
FloatRegBits q[NumFloatRegs]; // integer qword view
double d[NumFloatRegs]; // double-precision floating point view
public:
FloatReg readReg(int floatReg)
{
return d[floatReg];
}
FloatReg readReg(int floatReg, int width)
{
return readReg(floatReg);
}
FloatRegBits readRegBits(int floatReg)
{
return q[floatReg];
}
FloatRegBits readRegBits(int floatReg, int width)
{
return readRegBits(floatReg);
}
Fault setReg(int floatReg, const FloatReg &val)
{
d[floatReg] = val;
return NoFault;
}
Fault setReg(int floatReg, const FloatReg &val, int width)
{
return setReg(floatReg, val);
}
Fault setRegBits(int floatReg, const FloatRegBits &val)
{
q[floatReg] = val;
return NoFault;
}
Fault setRegBits(int floatReg, const FloatRegBits &val, int width)
{
return setRegBits(floatReg, val);
}
void serialize(std::ostream &os);
void unserialize(Checkpoint *cp, const std::string &section);
};
void copyRegs(ExecContext *src, ExecContext *dest);
// cop-0/cop-1 system control register file
typedef uint64_t MiscReg;
//typedef MiscReg MiscRegFile[NumMiscRegs];
class MiscRegFile {
protected:
uint64_t fpcr; // floating point condition codes
uint64_t uniq; // process-unique register
bool lock_flag; // lock flag for LL/SC
Addr lock_addr; // lock address for LL/SC
MiscReg miscRegFile[NumMiscRegs];
public:
//These functions should be removed once the simplescalar cpu model
//has been replaced.
int getInstAsid();
int getDataAsid();
void copyMiscRegs(ExecContext *xc);
MiscReg readReg(int misc_reg)
{ return miscRegFile[misc_reg]; }
MiscReg readRegWithEffect(int misc_reg, Fault &fault, ExecContext *xc)
{ return miscRegFile[misc_reg];}
Fault setReg(int misc_reg, const MiscReg &val)
{ miscRegFile[misc_reg] = val; return NoFault; }
Fault setRegWithEffect(int misc_reg, const MiscReg &val,
ExecContext *xc)
{ miscRegFile[misc_reg] = val; return NoFault; }
#if FULL_SYSTEM
void clearIprs() { }
protected:
InternalProcReg ipr[NumInternalProcRegs]; // Internal processor regs
private:
MiscReg readIpr(int idx, Fault &fault, ExecContext *xc) { }
Fault setIpr(int idx, uint64_t val, ExecContext *xc) { }
#endif
friend class RegFile;
};
enum MiscRegTags {
//Coprocessor 0 Registers
//Reference MIPS32 Arch. for Programmers, Vol. III, Ch.8
//(Register Number-Register Select) Summary of Register
//------------------------------------------------------
Index = 0, //0-0 Index into the TLB array
MVPControl = 1, //0-1 Per-processor register containing global
//MIPS<50> MT configuration data
MVPConf0 = 2, //0-2 Per-processor register containing global
//MIPS<50> MT configuration data
MVPConf1 = 3, //0-3 Per-processor register containing global
//MIPS<50> MT configuration data
Random = 8, //1-0 Randomly generated index into the TLB array
VPEControl = 9, //1-1 Per-VPE register containing relatively volatile
//thread configuration data
VPEConf0 = 10, //1-2 Per-VPE multi-thread configuration
//information
VPEConf1 = 11, //1-2 Per-VPE multi-thread configuration
//information
YQMask = 12, //Per-VPE register defining which YIELD
//qualifier bits may be used without generating
//an exception
VPESchedule = 13,
VPEScheFBack = 14,
VPEOpt = 15,
EntryLo0 = 16, // Bank 3: 16 - 23
TCStatus = 17,
TCBind = 18,
TCRestart = 19,
TCHalt = 20,
TCContext = 21,
TCSchedule = 22,
TCScheFBack = 23,
EntryLo1 = 24,// Bank 4: 24 - 31
Context = 32, // Bank 5: 32 - 39
ContextConfig = 33,
//PageMask = 40, //Bank 6: 40 - 47
PageGrain = 41,
Wired = 48, //Bank 7:48 - 55
SRSConf0 = 49,
SRSConf1 = 50,
SRSConf2 = 51,
SRSConf3 = 52,
SRSConf4 = 53,
BadVAddr = 54,
HWRena = 56,//Bank 8:56 - 63
Count = 64, //Bank 9:64 - 71
EntryHi = 72,//Bank 10:72 - 79
Compare = 80,//Bank 11:80 - 87
Status = 88,//Bank 12:88 - 96 //12-0 Processor status and control
IntCtl = 89, //12-1 Interrupt system status and control
SRSCtl = 90, //12-2 Shadow register set status and control
SRSMap = 91, //12-3 Shadow set IPL mapping
Cause = 97,//97-104 //13-0 Cause of last general exception
EPC = 105,//105-112 //14-0 Program counter at last exception
PRId = 113,//113-120, //15-0 Processor identification and revision
EBase = 114, //15-1 Exception vector base register
Config = 121,//Bank 16: 121-128
Config1 = 122,
Config2 = 123,
Config3 = 124,
Config6 = 127,
Config7 = 128,
LLAddr = 129,//Bank 17: 129-136
WatchLo0 = 137,//Bank 18: 137-144
WatchLo1 = 138,
WatchLo2 = 139,
WatchLo3 = 140,
WatchLo4 = 141,
WatchLo5 = 142,
WatchLo6 = 143,
WatchLo7 = 144,
WatchHi0 = 145,//Bank 19: 145-152
WatchHi1 = 146,
WatchHi2 = 147,
WatchHi3 = 148,
WatchHi4 = 149,
WatchHi5 = 150,
WatchHi6 = 151,
WatchHi7 = 152,
XCContext64 = 153,//Bank 20: 153-160
//Bank 21: 161-168
//Bank 22: 169-176
Debug = 177, //Bank 23: 177-184
TraceControl1 = 178,
TraceControl2 = 179,
UserTraceData = 180,
TraceBPC = 181,
DEPC = 185,//Bank 24: 185-192
PerfCnt0 = 193,//Bank 25: 193 - 200
PerfCnt1 = 194,
PerfCnt2 = 195,
PerfCnt3 = 196,
PerfCnt4 = 197,
PerfCnt5 = 198,
PerfCnt6 = 199,
PerfCnt7 = 200,
ErrCtl = 201, //Bank 26: 201 - 208
CacheErr0 = 209, //Bank 27: 209 - 216
CacheErr1 = 210,
CacheErr2 = 211,
CacheErr3 = 212,
TagLo0 = 217,//Bank 28: 217 - 224
DataLo1 = 218,
TagLo2 = 219,
DataLo3 = 220,
TagLo4 = 221,
DataLo5 = 222,
TagLo6 = 223,
DataLo7 = 234,
TagHi0 = 233,//Bank 29: 233 - 240
DataHi1 = 234,
TagHi2 = 235,
DataHi3 = 236,
TagHi4 = 237,
DataHi5 = 238,
TagHi6 = 239,
DataHi7 = 240,
ErrorEPC = 249,//Bank 30: 241 - 248
DESAVE = 257,//Bank 31: 249-256
//More Misc. Regs
Hi,
Lo,
FIR,
FCSR,
FPCR,
//Alpha Regs, but here now, for
//compiling sake
UNIQ,
LockAddr,
LockFlag
};
extern const Addr PageShift;
extern const Addr PageBytes;
extern const Addr PageMask;
extern const Addr PageOffset;
#if FULL_SYSTEM
typedef uint64_t InternalProcReg;
#include "arch/mips/isa_fullsys_traits.hh"
#else
enum {
NumInternalProcRegs = 0
};
#endif
typedef union {
IntReg intreg;
FloatReg fpreg;
MiscReg ctrlreg;
} AnyReg;
class RegFile {
protected:
IntRegFile intRegFile; // (signed) integer register file
FloatRegFile floatRegFile; // floating point register file
MiscRegFile miscRegFile; // control register file
public:
void clear()
{
bzero(&intRegFile, sizeof(intRegFile));
bzero(&floatRegFile, sizeof(floatRegFile));
bzero(&miscRegFile, sizeof(miscRegFile));
}
MiscReg readMiscReg(int miscReg)
{
return miscRegFile.readReg(miscReg);
}
MiscReg readMiscRegWithEffect(int miscReg,
Fault &fault, ExecContext *xc)
{
fault = NoFault;
return miscRegFile.readRegWithEffect(miscReg, fault, xc);
}
Fault setMiscReg(int miscReg, const MiscReg &val)
{
return miscRegFile.setReg(miscReg, val);
}
Fault setMiscRegWithEffect(int miscReg, const MiscReg &val,
ExecContext * xc)
{
return miscRegFile.setRegWithEffect(miscReg, val, xc);
}
FloatReg readFloatReg(int floatReg)
{
return floatRegFile.readReg(floatReg);
}
FloatReg readFloatReg(int floatReg, int width)
{
return readFloatReg(floatReg);
}
FloatRegBits readFloatRegBits(int floatReg)
{
return floatRegFile.readRegBits(floatReg);
}
FloatRegBits readFloatRegBits(int floatReg, int width)
{
return readFloatRegBits(floatReg);
}
Fault setFloatReg(int floatReg, const FloatReg &val)
{
return floatRegFile.setReg(floatReg, val);
}
Fault setFloatReg(int floatReg, const FloatReg &val, int width)
{
return setFloatReg(floatReg, val);
}
Fault setFloatRegBits(int floatReg, const FloatRegBits &val)
{
return floatRegFile.setRegBits(floatReg, val);
}
Fault setFloatRegBits(int floatReg, const FloatRegBits &val, int width)
{
return setFloatRegBits(floatReg, val);
}
IntReg readIntReg(int intReg)
{
return intRegFile.readReg(intReg);
}
Fault setIntReg(int intReg, const IntReg &val)
{
return intRegFile.setReg(intReg, val);
}
protected:
Addr pc; // program counter
Addr npc; // next-cycle program counter
Addr nnpc; // next-next-cycle program counter
// used to implement branch delay slot
// not real register
public:
Addr readPC()
{
return pc;
}
void setPC(Addr val)
{
pc = val;
}
Addr readNextPC()
{
return npc;
}
void setNextPC(Addr val)
{
npc = val;
}
Addr readNextNPC()
{
return nnpc;
}
void setNextNPC(Addr val)
{
nnpc = val;
}
MiscReg hi; // MIPS HI Register
MiscReg lo; // MIPS LO Register
#if FULL_SYSTEM
IntReg palregs[NumIntRegs]; // PAL shadow registers
InternalProcReg ipr[NumInternalProcRegs]; // internal processor regs
int intrflag; // interrupt flag
bool pal_shadow; // using pal_shadow registers
inline int instAsid() { return MIPS34K::ITB_ASN_ASN(ipr[IPR_ITB_ASN]); }
inline int dataAsid() { return MIPS34K::DTB_ASN_ASN(ipr[IPR_DTB_ASN]); }
#endif // FULL_SYSTEM
//void initCP0Regs();
void serialize(std::ostream &os);
void unserialize(Checkpoint *cp, const std::string &section);
void createCP0Regs();
void coldReset();
typedef int ContextParam;
typedef int ContextVal;
void changeContext(ContextParam param, ContextVal val)
{
}
};
StaticInstPtr decodeInst(ExtMachInst);
// return a no-op instruction... used for instruction fetch faults
extern const MachInst NoopMachInst;
enum annotes {
ANNOTE_NONE = 0,
// An impossible number for instruction annotations
ITOUCH_ANNOTE = 0xffffffff,
};
//void getMiscRegIdx(int reg_name,int &idx, int &sel);
static inline ExtMachInst
makeExtMI(MachInst inst, const uint64_t &pc) {
#if FULL_SYSTEM
ExtMachInst ext_inst = inst;
if (pc && 0x1)
return ext_inst|=(static_cast<ExtMachInst>(pc & 0x1) << 32);
else
return ext_inst;
#else
return ExtMachInst(inst);
#endif
}
static inline bool isCallerSaveIntegerRegister(unsigned int reg) {
panic("register classification not implemented");
return (reg >= 1 && reg <= 8 || reg >= 22 && reg <= 25 || reg == 27);
}
static inline bool isCalleeSaveIntegerRegister(unsigned int reg) {
panic("register classification not implemented");
return (reg >= 9 && reg <= 15);
}
static inline bool isCallerSaveFloatRegister(unsigned int reg) {
panic("register classification not implemented");
return false;
}
static inline bool isCalleeSaveFloatRegister(unsigned int reg) {
panic("register classification not implemented");
return false;
}
static inline Addr alignAddress(const Addr &addr,
unsigned int nbytes) {
return (addr & ~(nbytes - 1));
}
// Instruction address compression hooks
static inline Addr realPCToFetchPC(const Addr &addr) {
return addr;
}
static inline Addr fetchPCToRealPC(const Addr &addr) {
return addr;
}
// the size of "fetched" instructions (not necessarily the size
// of real instructions for PISA)
static inline size_t fetchInstSize() {
return sizeof(MachInst);
}
static inline MachInst makeRegisterCopy(int dest, int src) {
panic("makeRegisterCopy not implemented");
return 0;
}
static inline void setSyscallReturn(SyscallReturn return_value, RegFile *regs)
{
if (return_value.successful()) {
// no error
regs->setIntReg(SyscallSuccessReg, 0);
regs->setIntReg(ReturnValueReg1, return_value.value());
} else {
// got an error, return details
regs->setIntReg(SyscallSuccessReg, (IntReg) -1);
regs->setIntReg(ReturnValueReg1, -return_value.value());
}
}
// Machine operations
void saveMachineReg(AnyReg &savereg, const RegFile &reg_file,
int regnum);
void restoreMachineReg(RegFile &regs, const AnyReg &reg,
int regnum);
#if 0
static void serializeSpecialRegs(const Serializable::Proxy &proxy,
const RegFile &regs);
static void unserializeSpecialRegs(const IniFile *db,
const std::string &category,
ConfigNode *node,
RegFile &regs);
#endif
/**
* Function to insure ISA semantics about 0 registers.
* @param xc The execution context.
*/
template <class XC>
void zeroRegisters(XC *xc);
const Addr MaxAddr = (Addr)-1;
};
#if FULL_SYSTEM
//typedef TheISA::InternalProcReg InternalProcReg;
//const int NumInternalProcRegs = TheISA::NumInternalProcRegs;
//const int NumInterruptLevels = TheISA::NumInterruptLevels;
#include "arch/mips/mips34k.hh"
#endif
using namespace MipsISA;
#endif // __ARCH_MIPS_ISA_TRAITS_HH__