src/arch/arm/insts/mem64.hh - public/gem5 - Git at Google

 /*
  * Copyright (c) 2011-2013,2017 ARM Limited
  * All rights reserved
  *
  * The license below extends only to copyright in the software and shall
  * not be construed as granting a license to any other intellectual
  * property including but not limited to intellectual property relating
  * to a hardware implementation of the functionality of the software
  * licensed hereunder.  You may use the software subject to the license
  * terms below provided that you ensure that this notice is replicated
  * unmodified and in its entirety in all distributions of the software,
  * modified or unmodified, in source code or in binary form.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met: redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer;
  * redistributions in binary form must reproduce the above copyright
  * notice, this list of conditions and the following disclaimer in the
  * documentation and/or other materials provided with the distribution;
  * neither the name of the copyright holders nor the names of its
  * contributors may be used to endorse or promote products derived from
  * this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * Authors: Gabe Black
  */
 #ifndef __ARCH_ARM_MEM64_HH__
 #define __ARCH_ARM_MEM64_HH__

 #include "arch/arm/insts/misc64.hh"
 #include "arch/arm/insts/static_inst.hh"

 namespace ArmISA
 {

 class SysDC64 : public MiscRegOp64
 {
   protected:
     IntRegIndex base;
     IntRegIndex dest;
     uint64_t imm;

     SysDC64(const char *mnem, ExtMachInst _machInst, OpClass __opClass,
             IntRegIndex _base, MiscRegIndex miscReg, uint64_t _imm)
         : MiscRegOp64(mnem, _machInst, __opClass, false),
           base(_base), dest((IntRegIndex)miscReg), imm(_imm)
     {}

     std::string generateDisassembly(
             Addr pc, const SymbolTable *symtab) const override;
 };

 class MightBeMicro64 : public ArmStaticInst
 {
   protected:
     MightBeMicro64(const char *mnem, ExtMachInst _machInst, OpClass __opClass)
         : ArmStaticInst(mnem, _machInst, __opClass)
     {}

     void
     advancePC(PCState &pcState) const
     {
         if (flags[IsLastMicroop]) {
             pcState.uEnd();
         } else if (flags[IsMicroop]) {
             pcState.uAdvance();
         } else {
             pcState.advance();
         }
     }
 };

 class Memory64 : public MightBeMicro64
 {
   public:
     enum AddrMode {
         AddrMd_Offset,
         AddrMd_PreIndex,
         AddrMd_PostIndex
     };

   protected:

     IntRegIndex dest;
     IntRegIndex base;
     /// True if the base register is SP (used for SP alignment checking).
     bool baseIsSP;
     static const unsigned numMicroops = 3;

     StaticInstPtr *uops;

     Memory64(const char *mnem, ExtMachInst _machInst, OpClass __opClass,
              IntRegIndex _dest, IntRegIndex _base)
         : MightBeMicro64(mnem, _machInst, __opClass),
           dest(_dest), base(_base), uops(NULL), memAccessFlags(0)
     {
         baseIsSP = isSP(_base);
     }

     virtual
     ~Memory64()
     {
         delete [] uops;
     }

     StaticInstPtr
     fetchMicroop(MicroPC microPC) const override
     {
         assert(uops != NULL && microPC < numMicroops);
         return uops[microPC];
     }

     void startDisassembly(std::ostream &os) const;

     unsigned memAccessFlags;

     void setExcAcRel(bool exclusive, bool acrel);
 };

 class MemoryImm64 : public Memory64
 {
   protected:
     int64_t imm;

     MemoryImm64(const char *mnem, ExtMachInst _machInst, OpClass __opClass,
                 IntRegIndex _dest, IntRegIndex _base, int64_t _imm)
         : Memory64(mnem, _machInst, __opClass, _dest, _base), imm(_imm)
     {}

     std::string generateDisassembly(
             Addr pc, const SymbolTable *symtab) const override;
 };

 class MemoryDImm64 : public MemoryImm64
 {
   protected:
     IntRegIndex dest2;

     MemoryDImm64(const char *mnem, ExtMachInst _machInst, OpClass __opClass,
                 IntRegIndex _dest, IntRegIndex _dest2, IntRegIndex _base,
                 int64_t _imm)
         : MemoryImm64(mnem, _machInst, __opClass, _dest, _base, _imm),
           dest2(_dest2)
     {}

     std::string generateDisassembly(
             Addr pc, const SymbolTable *symtab) const override;
 };

 class MemoryDImmEx64 : public MemoryDImm64
 {
   protected:
     IntRegIndex result;

     MemoryDImmEx64(const char *mnem, ExtMachInst _machInst, OpClass __opClass,
                  IntRegIndex _result, IntRegIndex _dest, IntRegIndex _dest2,
                  IntRegIndex _base, int32_t _imm)
         : MemoryDImm64(mnem, _machInst, __opClass, _dest, _dest2,
                      _base, _imm), result(_result)
     {}

     std::string generateDisassembly(
             Addr pc, const SymbolTable *symtab) const override;
 };

 class MemoryPreIndex64 : public MemoryImm64
 {
   protected:
     MemoryPreIndex64(const char *mnem, ExtMachInst _machInst,
                      OpClass __opClass, IntRegIndex _dest, IntRegIndex _base,
                      int64_t _imm)
         : MemoryImm64(mnem, _machInst, __opClass, _dest, _base, _imm)
     {}

     std::string generateDisassembly(
             Addr pc, const SymbolTable *symtab) const override;
 };

 class MemoryPostIndex64 : public MemoryImm64
 {
   protected:
     MemoryPostIndex64(const char *mnem, ExtMachInst _machInst,
                       OpClass __opClass, IntRegIndex _dest, IntRegIndex _base,
                       int64_t _imm)
         : MemoryImm64(mnem, _machInst, __opClass, _dest, _base, _imm)
     {}

     std::string generateDisassembly(
             Addr pc, const SymbolTable *symtab) const override;
 };

 class MemoryReg64 : public Memory64
 {
   protected:
     IntRegIndex offset;
     ArmExtendType type;
     uint64_t shiftAmt;

     MemoryReg64(const char *mnem, ExtMachInst _machInst,
                 OpClass __opClass, IntRegIndex _dest, IntRegIndex _base,
                 IntRegIndex _offset, ArmExtendType _type,
                 uint64_t _shiftAmt)
         : Memory64(mnem, _machInst, __opClass, _dest, _base),
           offset(_offset), type(_type), shiftAmt(_shiftAmt)
     {}

     std::string generateDisassembly(
             Addr pc, const SymbolTable *symtab) const override;
 };

 class MemoryRaw64 : public Memory64
 {
   protected:
     MemoryRaw64(const char *mnem, ExtMachInst _machInst,
                 OpClass __opClass, IntRegIndex _dest, IntRegIndex _base)
         : Memory64(mnem, _machInst, __opClass, _dest, _base)
     {}

     std::string generateDisassembly(
             Addr pc, const SymbolTable *symtab) const override;
 };

 class MemoryEx64 : public Memory64
 {
   protected:
     IntRegIndex result;

     MemoryEx64(const char *mnem, ExtMachInst _machInst,
                OpClass __opClass, IntRegIndex _dest, IntRegIndex _base,
                IntRegIndex _result)
         : Memory64(mnem, _machInst, __opClass, _dest, _base), result(_result)
     {}

     std::string generateDisassembly(
             Addr pc, const SymbolTable *symtab) const override;
 };

 class MemoryLiteral64 : public Memory64
 {
   protected:
     int64_t imm;

     MemoryLiteral64(const char *mnem, ExtMachInst _machInst,
                     OpClass __opClass, IntRegIndex _dest, int64_t _imm)
         : Memory64(mnem, _machInst, __opClass, _dest, INTREG_ZERO), imm(_imm)
     {}

     std::string generateDisassembly(
             Addr pc, const SymbolTable *symtab) const override;
 };

 /**
  * A generic atomic op class
  */

 template<typename T>
 class AtomicGeneric2Op : public TypedAtomicOpFunctor<T>
 {
   public:
     AtomicGeneric2Op(T _a, std::function<void(T*,T)> _op)
         : a(_a), op(_op)
     {}
     AtomicOpFunctor* clone() override
     {
         return new AtomicGeneric2Op<T>(*this);
     }
     void execute(T *b) override
     {
         op(b, a);
     }
   private:
     T a;
     std::function<void(T*,T)> op;
  };

 template<typename T>
 class AtomicGeneric3Op : public TypedAtomicOpFunctor<T>
 {
   public:
     AtomicGeneric3Op(T _a, T _c, std::function<void(T*, T, T)> _op)
         : a(_a), c(_c), op(_op)
     {}
     AtomicOpFunctor* clone() override
     {
         return new AtomicGeneric3Op<T>(*this);
     }
     void execute(T *b) override
     {
         op(b, a, c);
     }
   private:
     T a;
     T c;
     std::function<void(T*, T, T)> op;
 };

 }

 #endif //__ARCH_ARM_INSTS_MEM_HH__
	/*
	* Copyright (c) 2011-2013,2017 ARM Limited
	* All rights reserved
	*
	* The license below extends only to copyright in the software and shall
	* not be construed as granting a license to any other intellectual
	* property including but not limited to intellectual property relating
	* to a hardware implementation of the functionality of the software
	* licensed hereunder. You may use the software subject to the license
	* terms below provided that you ensure that this notice is replicated
	* unmodified and in its entirety in all distributions of the software,
	* modified or unmodified, in source code or in binary form.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are
	* met: redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer;
	* redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution;
	* neither the name of the copyright holders nor the names of its
	* contributors may be used to endorse or promote products derived from
	* this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*
	* Authors: Gabe Black
	*/
	#ifndef __ARCH_ARM_MEM64_HH__
	#define __ARCH_ARM_MEM64_HH__

	#include "arch/arm/insts/misc64.hh"
	#include "arch/arm/insts/static_inst.hh"

	namespace ArmISA
	{

	class SysDC64 : public MiscRegOp64
	{
	protected:
	IntRegIndex base;
	IntRegIndex dest;
	uint64_t imm;

	SysDC64(const char *mnem, ExtMachInst _machInst, OpClass __opClass,
	IntRegIndex _base, MiscRegIndex miscReg, uint64_t _imm)
	: MiscRegOp64(mnem, _machInst, __opClass, false),
	base(_base), dest((IntRegIndex)miscReg), imm(_imm)
	{}

	std::string generateDisassembly(
	Addr pc, const SymbolTable *symtab) const override;
	};

	class MightBeMicro64 : public ArmStaticInst
	{
	protected:
	MightBeMicro64(const char *mnem, ExtMachInst _machInst, OpClass __opClass)
	: ArmStaticInst(mnem, _machInst, __opClass)
	{}

	void
	advancePC(PCState &pcState) const
	{
	if (flags[IsLastMicroop]) {
	pcState.uEnd();
	} else if (flags[IsMicroop]) {
	pcState.uAdvance();
	} else {
	pcState.advance();
	}
	}
	};

	class Memory64 : public MightBeMicro64
	{
	public:
	enum AddrMode {
	AddrMd_Offset,
	AddrMd_PreIndex,
	AddrMd_PostIndex
	};

	protected:

	IntRegIndex dest;
	IntRegIndex base;
	/// True if the base register is SP (used for SP alignment checking).
	bool baseIsSP;
	static const unsigned numMicroops = 3;

	StaticInstPtr *uops;

	Memory64(const char *mnem, ExtMachInst _machInst, OpClass __opClass,
	IntRegIndex _dest, IntRegIndex _base)
	: MightBeMicro64(mnem, _machInst, __opClass),
	dest(_dest), base(_base), uops(NULL), memAccessFlags(0)
	{
	baseIsSP = isSP(_base);
	}

	virtual
	~Memory64()
	{
	delete [] uops;
	}

	StaticInstPtr
	fetchMicroop(MicroPC microPC) const override
	{
	assert(uops != NULL && microPC < numMicroops);
	return uops[microPC];
	}

	void startDisassembly(std::ostream &os) const;

	unsigned memAccessFlags;

	void setExcAcRel(bool exclusive, bool acrel);
	};

	class MemoryImm64 : public Memory64
	{
	protected:
	int64_t imm;

	MemoryImm64(const char *mnem, ExtMachInst _machInst, OpClass __opClass,
	IntRegIndex _dest, IntRegIndex _base, int64_t _imm)
	: Memory64(mnem, _machInst, __opClass, _dest, _base), imm(_imm)
	{}

	std::string generateDisassembly(
	Addr pc, const SymbolTable *symtab) const override;
	};

	class MemoryDImm64 : public MemoryImm64
	{
	protected:
	IntRegIndex dest2;

	MemoryDImm64(const char *mnem, ExtMachInst _machInst, OpClass __opClass,
	IntRegIndex _dest, IntRegIndex _dest2, IntRegIndex _base,
	int64_t _imm)
	: MemoryImm64(mnem, _machInst, __opClass, _dest, _base, _imm),
	dest2(_dest2)
	{}

	std::string generateDisassembly(
	Addr pc, const SymbolTable *symtab) const override;
	};

	class MemoryDImmEx64 : public MemoryDImm64
	{
	protected:
	IntRegIndex result;

	MemoryDImmEx64(const char *mnem, ExtMachInst _machInst, OpClass __opClass,
	IntRegIndex _result, IntRegIndex _dest, IntRegIndex _dest2,
	IntRegIndex _base, int32_t _imm)
	: MemoryDImm64(mnem, _machInst, __opClass, _dest, _dest2,
	_base, _imm), result(_result)
	{}

	std::string generateDisassembly(
	Addr pc, const SymbolTable *symtab) const override;
	};

	class MemoryPreIndex64 : public MemoryImm64
	{
	protected:
	MemoryPreIndex64(const char *mnem, ExtMachInst _machInst,
	OpClass __opClass, IntRegIndex _dest, IntRegIndex _base,
	int64_t _imm)
	: MemoryImm64(mnem, _machInst, __opClass, _dest, _base, _imm)
	{}

	std::string generateDisassembly(
	Addr pc, const SymbolTable *symtab) const override;
	};

	class MemoryPostIndex64 : public MemoryImm64
	{
	protected:
	MemoryPostIndex64(const char *mnem, ExtMachInst _machInst,
	OpClass __opClass, IntRegIndex _dest, IntRegIndex _base,
	int64_t _imm)
	: MemoryImm64(mnem, _machInst, __opClass, _dest, _base, _imm)
	{}

	std::string generateDisassembly(
	Addr pc, const SymbolTable *symtab) const override;
	};

	class MemoryReg64 : public Memory64
	{
	protected:
	IntRegIndex offset;
	ArmExtendType type;
	uint64_t shiftAmt;

	MemoryReg64(const char *mnem, ExtMachInst _machInst,
	OpClass __opClass, IntRegIndex _dest, IntRegIndex _base,
	IntRegIndex _offset, ArmExtendType _type,
	uint64_t _shiftAmt)
	: Memory64(mnem, _machInst, __opClass, _dest, _base),
	offset(_offset), type(_type), shiftAmt(_shiftAmt)
	{}

	std::string generateDisassembly(
	Addr pc, const SymbolTable *symtab) const override;
	};

	class MemoryRaw64 : public Memory64
	{
	protected:
	MemoryRaw64(const char *mnem, ExtMachInst _machInst,
	OpClass __opClass, IntRegIndex _dest, IntRegIndex _base)
	: Memory64(mnem, _machInst, __opClass, _dest, _base)
	{}

	std::string generateDisassembly(
	Addr pc, const SymbolTable *symtab) const override;
	};

	class MemoryEx64 : public Memory64
	{
	protected:
	IntRegIndex result;

	MemoryEx64(const char *mnem, ExtMachInst _machInst,
	OpClass __opClass, IntRegIndex _dest, IntRegIndex _base,
	IntRegIndex _result)
	: Memory64(mnem, _machInst, __opClass, _dest, _base), result(_result)
	{}

	std::string generateDisassembly(
	Addr pc, const SymbolTable *symtab) const override;
	};

	class MemoryLiteral64 : public Memory64
	{
	protected:
	int64_t imm;

	MemoryLiteral64(const char *mnem, ExtMachInst _machInst,
	OpClass __opClass, IntRegIndex _dest, int64_t _imm)
	: Memory64(mnem, _machInst, __opClass, _dest, INTREG_ZERO), imm(_imm)
	{}

	std::string generateDisassembly(
	Addr pc, const SymbolTable *symtab) const override;
	};

	/**
	* A generic atomic op class
	*/

	template<typename T>
	class AtomicGeneric2Op : public TypedAtomicOpFunctor<T>
	{
	public:
	AtomicGeneric2Op(T _a, std::function<void(T*,T)> _op)
	: a(_a), op(_op)
	{}
	AtomicOpFunctor* clone() override
	{
	return new AtomicGeneric2Op<T>(*this);
	}
	void execute(T *b) override
	{
	op(b, a);
	}
	private:
	T a;
	std::function<void(T*,T)> op;
	};

	template<typename T>
	class AtomicGeneric3Op : public TypedAtomicOpFunctor<T>
	{
	public:
	AtomicGeneric3Op(T _a, T _c, std::function<void(T*, T, T)> _op)
	: a(_a), c(_c), op(_op)
	{}
	AtomicOpFunctor* clone() override
	{
	return new AtomicGeneric3Op<T>(*this);
	}
	void execute(T *b) override
	{
	op(b, a, c);
	}
	private:
	T a;
	T c;
	std::function<void(T*, T, T)> op;
	};

	}

	#endif //__ARCH_ARM_INSTS_MEM_HH__