project64/Source/Project64/N64 System/C Core/Tlb.h

108 lines
2.4 KiB
C

/*
* Project 64 - A Nintendo 64 emulator.
*
* (c) Copyright 2001 zilmar (zilmar@emulation64.com) and
* Jabo (jabo@emulation64.com).
*
* pj64 homepage: www.pj64.net
*
* Permission to use, copy, modify and distribute Project64 in both binary and
* source form, for non-commercial purposes, is hereby granted without fee,
* providing that this license information and copyright notice appear with
* all copies and any derived work.
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event shall the authors be held liable for any damages
* arising from the use of this software.
*
* Project64 is freeware for PERSONAL USE only. Commercial users should
* seek permission of the copyright holders first. Commercial use includes
* charging money for Project64 or software derived from Project64.
*
* The copyright holders request that bug fixes and improvements to the code
* should be forwarded to them so if they want them.
*
*/
#ifdef todelete
typedef struct {
BOOL EntryDefined;
union {
unsigned long Value;
unsigned char A[4];
struct BreakDownPageMask{
unsigned zero : 13;
unsigned Mask : 12;
unsigned zero2 : 7;
} ;
} PageMask;
union {
unsigned long Value;
unsigned char A[4];
struct BreakDownEntryHi {
unsigned ASID : 8;
unsigned Zero : 4;
unsigned G : 1;
unsigned VPN2 : 19;
};
} EntryHi;
union {
unsigned long Value;
unsigned char A[4];
struct BreakDownEntryLo0{
unsigned GLOBAL: 1;
unsigned V : 1;
unsigned D : 1;
unsigned C : 3;
unsigned PFN : 20;
unsigned ZERO: 6;
} ;
} EntryLo0;
union {
unsigned long Value;
unsigned char A[4];
struct BreakDownEntryLo1{
unsigned GLOBAL: 1;
unsigned V : 1;
unsigned D : 1;
unsigned C : 3;
unsigned PFN : 20;
unsigned ZERO: 6;
} ;
} EntryLo1;
} TLB;
typedef struct {
DWORD VSTART;
DWORD VEND;
DWORD PHYSSTART;
DWORD PHYSEND;
BOOL VALID;
BOOL DIRTY;
BOOL GLOBAL;
BOOL ValidEntry;
} FASTTLB;
extern FASTTLB FastTlb[64];
extern TLB tlb[32];
BOOL AddressDefined ( DWORD VAddr);
void InitilizeTLB ( void );
void SetupTLB ( void );
void TLB_Probe ( void );
void TLB_Read ( void );
BOOL TranslateVaddr ( DWORD * Addr);
void _fastcall WriteTLBEntry ( int index );
#endif