machine.h File Reference

#include "copyright.h"
#include "utility.h"
#include "translate.h"
#include "disk.h"

Go to the source code of this file.

Classes

class Instruction

class Machine

Defines

#define PageSize   SectorSize

#define NumPhysPages   32

#define MemorySize   (NumPhysPages * PageSize)

#define TLBSize   4

#define StackReg   29

#define RetAddrReg   31

#define NumGPRegs   32

#define HiReg   32

#define LoReg   33

#define PCReg   34

#define NextPCReg   35

#define PrevPCReg   36

#define LoadReg   37

#define LoadValueReg   38

#define BadVAddrReg   39

#define NumTotalRegs   40

Enumerations

enum ExceptionType {
  NoException, SyscallException, PageFaultException, ReadOnlyException,
  BusErrorException, AddressErrorException, OverflowException, IllegalInstrException,
  NumExceptionTypes
}

Functions

void ExceptionHandler (ExceptionType which)

unsigned int WordToHost (unsigned int word)

unsigned short ShortToHost (unsigned short shortword)

unsigned int WordToMachine (unsigned int word)

unsigned short ShortToMachine (unsigned short shortword)

Define Documentation

#define BadVAddrReg 39

Definition at line 70 of file machine.h.
Referenced by Machine::RaiseException().

#define HiReg 32

Definition at line 63 of file machine.h.
Referenced by Machine::DumpState(), and Machine::OneInstruction().

#define LoadReg 37

Definition at line 68 of file machine.h.
Referenced by Machine::DelayedLoad(), Machine::DumpState(), and Machine::OneInstruction().

#define LoadValueReg 38

Definition at line 69 of file machine.h.
Referenced by Machine::DelayedLoad(), Machine::DumpState(), and Machine::OneInstruction().

#define LoReg 33

Definition at line 64 of file machine.h.
Referenced by Machine::DumpState(), and Machine::OneInstruction().

#define MemorySize (NumPhysPages * PageSize)

Definition at line 36 of file machine.h.
Referenced by Machine::Machine(), and Machine::Translate().

#define NextPCReg 35

Definition at line 66 of file machine.h.
Referenced by Machine::DumpState(), and Machine::OneInstruction().

#define NumGPRegs 32

Definition at line 62 of file machine.h.
Referenced by Machine::DumpState().

#define NumPhysPages 32

Definition at line 35 of file machine.h.
Referenced by Machine::Translate().

#define NumTotalRegs 40

Definition at line 72 of file machine.h.
Referenced by Machine::Machine(), Machine::ReadRegister(), and Machine::WriteRegister().

#define PageSize SectorSize

Definition at line 31 of file machine.h.
Referenced by Machine::Translate().

#define PCReg 34

Definition at line 65 of file machine.h.
Referenced by Machine::DumpState(), and Machine::OneInstruction().

#define PrevPCReg 36

Definition at line 67 of file machine.h.
Referenced by Machine::DumpState(), and Machine::OneInstruction().

#define RetAddrReg 31

Definition at line 61 of file machine.h.
Referenced by Machine::DumpState().

#define StackReg 29

Definition at line 60 of file machine.h.
Referenced by Machine::DumpState().

#define TLBSize 4

Definition at line 37 of file machine.h.
Referenced by Machine::Machine(), and Machine::Translate().

Enumeration Type Documentation

enum ExceptionType

Enumeration values:

NoException

SyscallException

PageFaultException

ReadOnlyException

BusErrorException

AddressErrorException

OverflowException

IllegalInstrException

NumExceptionTypes

Definition at line 39 of file machine.h.
Referenced by Machine::ReadMem(), and Machine::WriteMem().
00039 { NoException, // Everything ok! 00040 SyscallException, // A program executed a system call. 00041 PageFaultException, // No valid translation found 00042 ReadOnlyException, // Write attempted to page marked 00043 // "read-only" 00044 BusErrorException, // Translation resulted in an 00045 // invalid physical address 00046 AddressErrorException, // Unaligned reference or one that 00047 // was beyond the end of the 00048 // address space 00049 OverflowException, // Integer overflow in add or sub. 00050 IllegalInstrException, // Unimplemented or reserved instr. 00051 00052 NumExceptionTypes 00053 };

Function Documentation

void ExceptionHandler ( ExceptionType which )

Referenced by Machine::RaiseException().

unsigned short ShortToHost ( unsigned short shortword )

Definition at line 56 of file translate.cc.
Referenced by Machine::ReadMem(), and ShortToMachine().
00056 { 00057 #ifdef HOST_IS_BIG_ENDIAN 00058 register unsigned short result; 00059 result = (shortword << 8) & 0xff00; 00060 result |= (shortword >> 8) & 0x00ff; 00061 return result; 00062 #else 00063 return shortword; 00064 #endif /* HOST_IS_BIG_ENDIAN */ 00065 }

unsigned short ShortToMachine ( unsigned short shortword )

Definition at line 71 of file translate.cc.
References ShortToHost().
Referenced by Machine::WriteMem().
00071 { return ShortToHost(shortword); }

unsigned int WordToHost ( unsigned int word )

Definition at line 42 of file translate.cc.
Referenced by Machine::ReadMem(), and WordToMachine().
00042 { 00043 #ifdef HOST_IS_BIG_ENDIAN 00044 register unsigned long result; 00045 result = (word >> 24) & 0x000000ff; 00046 result |= (word >> 8) & 0x0000ff00; 00047 result |= (word << 8) & 0x00ff0000; 00048 result |= (word << 24) & 0xff000000; 00049 return result; 00050 #else 00051 return word; 00052 #endif /* HOST_IS_BIG_ENDIAN */ 00053 }

unsigned int WordToMachine ( unsigned int word )

Definition at line 68 of file translate.cc.
References WordToHost().
Referenced by Machine::WriteMem().
00068 { return WordToHost(word); }

Generated on Thu Sep 16 12:33:46 2004 for NachOS by

1.3.8


Classes
class	Instruction
class	Machine
Defines
#define	PageSize SectorSize
#define	NumPhysPages 32
#define	MemorySize (NumPhysPages * PageSize)
#define	TLBSize 4
#define	StackReg 29
#define	RetAddrReg 31
#define	NumGPRegs 32
#define	HiReg 32
#define	LoReg 33
#define	PCReg 34
#define	NextPCReg 35
#define	PrevPCReg 36
#define	LoadReg 37
#define	LoadValueReg 38
#define	BadVAddrReg 39
#define	NumTotalRegs 40
Enumerations
enum	ExceptionType { NoException, SyscallException, PageFaultException, ReadOnlyException, BusErrorException, AddressErrorException, OverflowException, IllegalInstrException, NumExceptionTypes }
Functions
void	ExceptionHandler (ExceptionType which)
unsigned int	WordToHost (unsigned int word)
unsigned short	ShortToHost (unsigned short shortword)
unsigned int	WordToMachine (unsigned int word)
unsigned short	ShortToMachine (unsigned short shortword)