mirror of
https://github.com/libretro/ppsspp.git
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104 lines
2.5 KiB
C++
104 lines
2.5 KiB
C++
// Copyright (c) 2012- PPSSPP Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#pragma once
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#include "x64Emitter.h"
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#include "../MIPSAnalyst.h"
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using namespace Gen;
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struct MIPSCachedReg {
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OpArg location;
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bool away; // value not in source register
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bool locked;
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};
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struct X64CachedReg {
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int mipsReg;
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bool dirty;
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bool free;
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bool allocLocked;
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};
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#ifdef _M_X64
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#define NUM_X_REGS 16
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#elif _M_IX86
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#define NUM_X_REGS 8
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#endif
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// TODO: Add more cachable regs, like HI, LO
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#define NUM_MIPS_GPRS 32
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class GPRRegCache
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{
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public:
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GPRRegCache();
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~GPRRegCache() {}
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void Start(MIPSState *mips, MIPSAnalyst::AnalysisResults &stats);
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void DiscardRegContentsIfCached(int preg);
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void SetEmitter(XEmitter *emitter) {emit = emitter;}
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void FlushR(X64Reg reg);
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void FlushLockX(X64Reg reg) {
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FlushR(reg);
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LockX(reg);
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}
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void FlushLockX(X64Reg reg1, X64Reg reg2) {
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FlushR(reg1); FlushR(reg2);
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LockX(reg1); LockX(reg2);
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}
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void Flush();
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int SanityCheck() const;
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void KillImmediate(int preg, bool doLoad, bool makeDirty);
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void BindToRegister(int preg, bool doLoad = true, bool makeDirty = true);
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void StoreFromRegister(int preg);
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const OpArg &R(int preg) const {return regs[preg].location;}
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X64Reg RX(int preg) const
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{
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if (regs[preg].away && regs[preg].location.IsSimpleReg())
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return regs[preg].location.GetSimpleReg();
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PanicAlert("Not so simple - %i", preg);
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return (X64Reg)-1;
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}
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OpArg GetDefaultLocation(int reg) const;
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// Register locking.
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void Lock(int p1, int p2=0xff, int p3=0xff, int p4=0xff);
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void LockX(int x1, int x2=0xff, int x3=0xff, int x4=0xff);
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void UnlockAll();
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void UnlockAllX();
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void SetImmediate32(int preg, u32 immValue);
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bool IsImmediate(int preg) const;
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u32 GetImmediate32(int preg) const;
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MIPSState *mips;
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private:
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X64Reg GetFreeXReg();
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const int *GetAllocationOrder(int &count);
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MIPSCachedReg regs[NUM_MIPS_GPRS];
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X64CachedReg xregs[NUM_X_REGS];
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XEmitter *emit;
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};
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