#ifndef __ARCH_MIPS_ISA_TRAITS_HH__
#define __ARCH_MIPS_ISA_TRAITS_HH__
-namespace LittleEndianGuest {}
-using namespace LittleEndianGuest;
-
-//#include "arch/mips/faults.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
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 = (uint64_t)v;
+ success = s;
+ }
+
+ template <class T>
+ SyscallReturn(T v)
+ {
+ success = (v >= 0);
+ retval = (uint64_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 uint64_t Addr;
+ 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 = ReturnValueReg1;
+
+ 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;
- enum {
- MemoryEnd = 0xffffffffffffffffULL,
-
- NumIntRegs = 32,
- NumFloatRegs = 32,
- NumMiscRegs = 32,
-
- MaxRegsOfAnyType = 32,
- // Static instruction parameters
- MaxInstSrcRegs = 3,
- MaxInstDestRegs = 2,
-
- // semantically meaningful register indices
- ZeroReg = 31, // architecturally meaningful
- // the rest of these depend on the ABI
- StackPointerReg = 30,
- GlobalPointerReg = 29,
- ProcedureValueReg = 27,
- ReturnAddressReg = 26,
- ReturnValueReg = 0,
- FramePointerReg = 15,
- ArgumentReg0 = 16,
- ArgumentReg1 = 17,
- ArgumentReg2 = 18,
- ArgumentReg3 = 19,
- ArgumentReg4 = 20,
- ArgumentReg5 = 21,
-
- LogVMPageSize = 13, // 8K bytes
- VMPageSize = (1 << LogVMPageSize),
-
- BranchPredAddrShiftAmt = 2, // instructions are 4-byte aligned
-
- WordBytes = 4,
- HalfwordBytes = 2,
- ByteBytes = 1,
- DepNA = 0,
- };
// These enumerate all the registers for dependence tracking.
enum DependenceTags {
Ctrl_Base_DepTag = 64,
Fpcr_DepTag = 64, // floating point control register
Uniq_DepTag = 65,
- IPR_Base_DepTag = 66
+ IPR_Base_DepTag = 66,
+ MiscReg_DepTag = 67
};
typedef uint64_t IntReg;
- typedef IntReg IntRegFile[NumIntRegs];
- // floating point register file entry type
+ 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 §ion);
+
+ };
+
+/* floating point register file entry type
typedef union {
uint64_t q;
double d;
- } FloatReg;
+ } FloatReg;*/
- typedef union {
+ typedef double FloatReg;
+ typedef uint64_t FloatRegBits;
+
+/*typedef union {
uint64_t q[NumFloatRegs]; // integer qword view
double d[NumFloatRegs]; // double-precision floating point view
- } FloatRegFile;
+ } FloatRegFile;*/
+
+ 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);
+ }
- // control register file contents
+ void serialize(std::ostream &os);
+
+ void unserialize(Checkpoint *cp, const std::string §ion);
+
+ };
+
+ void copyRegs(ExecContext *src, ExecContext *dest);
+
+ // cop-0/cop-1 system control register file
typedef uint64_t MiscReg;
- typedef struct {
+//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
- } MiscRegFile;
+
+ 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® MT configuration data
+
+ MVPConf0 = 2, //0-2 Per-processor register containing global
+ //MIPS® MT configuration data
+
+ MVPConf1 = 3, //0-3 Per-processor register containing global
+ //MIPS® 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,
+ FCSR,
+ FPCR,
+
+ //Alpha Regs, but here now, for
+ //compiling sake
+ UNIQ,
+ LockAddr,
+ LockFlag
+ };
extern const Addr PageShift;
extern const Addr PageBytes;
};
#endif
- enum {
- TotalNumRegs =
- NumIntRegs + NumFloatRegs + NumMiscRegs + NumInternalProcRegs
- };
-
- enum {
- TotalDataRegs = NumIntRegs + NumFloatRegs
- };
-
typedef union {
IntReg intreg;
FloatReg fpreg;
MiscReg ctrlreg;
} AnyReg;
- struct RegFile {
+ class RegFile {
+ protected:
IntRegFile intRegFile; // (signed) integer register file
FloatRegFile floatRegFile; // floating point register file
- MiscRegFile miscRegs; // control 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 EV5::ITB_ASN_ASN(ipr[IPR_ITB_ASN]); }
- inline int dataAsid() { return EV5::DTB_ASN_ASN(ipr[IPR_DTB_ASN]); }
+ 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 §ion);
+
+ void createCP0Regs();
+ void coldReset();
+
+ typedef int ContextParam;
+ typedef int ContextVal;
+
+ void changeContext(ContextParam param, ContextVal val)
+ {
+ }
};
- StaticInstPtr decodeInst(MachInst);
+ StaticInstPtr decodeInst(ExtMachInst);
// return a no-op instruction... used for instruction fetch faults
extern const MachInst NoopMachInst;
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);
return 0;
}
+ static inline void setSyscallReturn(SyscallReturn return_value, RegFile *regs)
+ {
+ // check for error condition. Alpha syscall convention is to
+ // indicate success/failure in reg a3 (r19) and put the
+ // return value itself in the standard return value reg (v0).
+ if (return_value.successful()) {
+ // no error
+ regs->setIntReg(ReturnValueReg1, 0);
+ regs->setIntReg(ReturnValueReg2, return_value.value());
+ } else {
+ // got an error, return details
+ regs->setIntReg(ReturnValueReg1, (IntReg) -1);
+ regs->setIntReg(ReturnValueReg2, -return_value.value());
+ }
+
+ //regs->intRegFile[ReturnValueReg1] = (IntReg)return_value;
+ //panic("Returning from syscall\n");
+ }
+
// Machine operations
void saveMachineReg(AnyReg &savereg, const RegFile ®_file,
template <class XC>
void zeroRegisters(XC *xc);
-
-//typedef MipsISA TheISA;
-
-//typedef TheISA::MachInst MachInst;
-//typedef TheISA::Addr Addr;
-//typedef TheISA::RegIndex RegIndex;
-//typedef TheISA::IntReg IntReg;
-//typedef TheISA::IntRegFile IntRegFile;
-//typedef TheISA::FloatReg FloatReg;
-//typedef TheISA::FloatRegFile FloatRegFile;
-//typedef TheISA::MiscReg MiscReg;
-//typedef TheISA::MiscRegFile MiscRegFile;
-//typedef TheISA::AnyReg AnyReg;
-//typedef TheISA::RegFile RegFile;
-
-//const int NumIntRegs = TheISA::NumIntRegs;
-//const int NumFloatRegs = TheISA::NumFloatRegs;
-//const int NumMiscRegs = TheISA::NumMiscRegs;
-//const int TotalNumRegs = TheISA::TotalNumRegs;
-//const int VMPageSize = TheISA::VMPageSize;
-//const int LogVMPageSize = TheISA::LogVMPageSize;
-//const int ZeroReg = TheISA::ZeroReg;
-//const int StackPointerReg = TheISA::StackPointerReg;
-//const int GlobalPointerReg = TheISA::GlobalPointerReg;
-//const int ReturnAddressReg = TheISA::ReturnAddressReg;
-//const int ReturnValueReg = TheISA::ReturnValueReg;
-//const int ArgumentReg0 = TheISA::ArgumentReg0;
-//const int ArgumentReg1 = TheISA::ArgumentReg1;
-//const int ArgumentReg2 = TheISA::ArgumentReg2;
-//const int BranchPredAddrShiftAmt = TheISA::BranchPredAddrShiftAmt;
-const Addr MaxAddr = (Addr)-1;
+ const Addr MaxAddr = (Addr)-1;
};
-#if !FULL_SYSTEM
-class SyscallReturn {
- public:
- template <class T>
- SyscallReturn(T v, bool s)
- {
- retval = (uint64_t)v;
- success = s;
- }
-
- template <class T>
- SyscallReturn(T v)
- {
- success = (v >= 0);
- retval = (uint64_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
-
-
#if FULL_SYSTEM
//typedef TheISA::InternalProcReg InternalProcReg;
//const int NumInternalProcRegs = TheISA::NumInternalProcRegs;
#include "arch/mips/mips34k.hh"
#endif
+using namespace MipsISA;
+
#endif // __ARCH_MIPS_ISA_TRAITS_HH__
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