106 lines
2.3 KiB
C
106 lines
2.3 KiB
C
/*
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* Project 64 - A Nintendo 64 emulator.
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*
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* (c) Copyright 2001 zilmar (zilmar@emulation64.com) and
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* Jabo (jabo@emulation64.com).
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*
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* pj64 homepage: www.pj64.net
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*
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* Permission to use, copy, modify and distribute Project64 in both binary and
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* source form, for non-commercial purposes, is hereby granted without fee,
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* providing that this license information and copyright notice appear with
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* all copies and any derived work.
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event shall the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Project64 is freeware for PERSONAL USE only. Commercial users should
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* seek permission of the copyright holders first. Commercial use includes
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* charging money for Project64 or software derived from Project64.
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*
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* The copyright holders request that bug fixes and improvements to the code
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* should be forwarded to them so if they want them.
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*
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*/
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#ifndef _TLB_H_
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#define _TLB_H_
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typedef struct {
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uint32_t EntryDefined;
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union {
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uint32_t Value;
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uint8_t A[4];
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struct {
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unsigned zero : 13;
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unsigned Mask : 12;
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unsigned zero2 : 7;
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} b;
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} PageMask;
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union {
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uint32_t Value;
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uint8_t A[4];
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struct {
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unsigned ASID : 8;
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unsigned Zero : 4;
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unsigned G : 1;
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unsigned VPN2 : 19;
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} b;
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} EntryHi;
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union {
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uint32_t Value;
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uint8_t A[4];
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struct {
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unsigned GLOBAL: 1;
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unsigned V : 1;
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unsigned D : 1;
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unsigned C : 3;
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unsigned PFN : 20;
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unsigned ZERO: 6;
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} b;
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} EntryLo0;
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union {
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uint32_t Value;
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uint8_t A[4];
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struct {
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unsigned GLOBAL: 1;
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unsigned V : 1;
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unsigned D : 1;
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unsigned C : 3;
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unsigned PFN : 20;
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unsigned ZERO: 6;
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} b;
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} EntryLo1;
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} TLB;
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typedef struct {
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uint32_t VSTART;
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uint32_t VEND;
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uint32_t PHYSSTART;
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uint32_t VALID;
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uint32_t DIRTY;
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uint32_t GLOBAL;
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uint32_t ValidEntry;
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} FASTTLB;
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uint32_t AddressDefined ( usf_state_t *, uintptr_t VAddr);
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void InitilizeTLB ( usf_state_t * );
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void SetupTLB ( usf_state_t * );
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void TLB_Probe ( usf_state_t * );
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void TLB_Read ( usf_state_t * );
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uint32_t TranslateVaddr ( usf_state_t *, uintptr_t * Addr);
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void WriteTLBEntry ( usf_state_t *, int32_t index );
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#endif
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