140 lines
3.9 KiB
C++
140 lines
3.9 KiB
C++
/* Copyright (c) 2007-2008 The Florida State University
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Stephen Hines
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*/
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#ifndef __ARCH_ARM_MEM_HH__
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#define __ARCH_ARM_MEM_HH__
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#include "arch/arm/insts/pred_inst.hh"
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namespace ArmISA
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{
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/**
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* Base class for general Arm memory-format instructions.
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*/
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class Memory : public PredOp
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{
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protected:
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/// Memory request flags. See mem_req_base.hh.
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unsigned memAccessFlags;
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/// Displacement for EA calculation (signed).
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int32_t disp;
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int32_t disp8;
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int32_t up;
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int32_t hilo,
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shift_size,
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shift;
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/// Constructor
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Memory(const char *mnem, ExtMachInst _machInst, OpClass __opClass)
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: PredOp(mnem, _machInst, __opClass),
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memAccessFlags(0),
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disp(machInst.immed11_0),
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disp8(machInst.immed7_0 << 2),
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up(machInst.puswl.up),
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hilo((machInst.immedHi11_8 << 4) | machInst.immedLo3_0),
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shift_size(machInst.shiftSize), shift(machInst.shift)
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{
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}
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std::string
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generateDisassembly(Addr pc, const SymbolTable *symtab) const;
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virtual void
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printOffset(std::ostream &os) const
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{}
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};
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class MemoryDisp : public Memory
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{
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protected:
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/// Constructor
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MemoryDisp(const char *mnem, ExtMachInst _machInst, OpClass __opClass)
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: Memory(mnem, _machInst, __opClass)
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{
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}
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void
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printOffset(std::ostream &os) const
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{
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ccprintf(os, "#%#x", (machInst.puswl.up ? disp : -disp));
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}
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};
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class MemoryHilo : public Memory
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{
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protected:
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/// Constructor
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MemoryHilo(const char *mnem, ExtMachInst _machInst, OpClass __opClass)
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: Memory(mnem, _machInst, __opClass)
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{
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}
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void
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printOffset(std::ostream &os) const
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{
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ccprintf(os, "#%#x", (machInst.puswl.up ? hilo : -hilo));
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}
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};
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class MemoryShift : public Memory
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{
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protected:
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/// Constructor
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MemoryShift(const char *mnem, ExtMachInst _machInst, OpClass __opClass)
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: Memory(mnem, _machInst, __opClass)
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{
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}
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void
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printOffset(std::ostream &os) const
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{
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printShiftOperand(os);
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}
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};
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class MemoryReg : public Memory
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{
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protected:
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/// Constructor
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MemoryReg(const char *mnem, ExtMachInst _machInst, OpClass __opClass)
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: Memory(mnem, _machInst, __opClass)
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{
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}
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void
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printOffset(std::ostream &os) const
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{
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os << (machInst.puswl.up ? "+ " : "- ");
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printReg(os, machInst.rm);
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}
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};
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}
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#endif //__ARCH_ARM_INSTS_MEM_HH__
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