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/*
****************************************************************************
*
* simulavr - A simulator for the Atmel AVR family of microcontrollers.
* Copyright (C) 2001, 2002, 2003 Klaus Rudolph
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
****************************************************************************
*
* $Id$
*/
#ifndef MEMORY
#define MEMORY
#include <string>
#include <map>
#include "decoder.h"
#include "avrmalloc.h"
//! Hold a memory block and symbol informations.
/*! Memory class to hold memory content and symbol informations to map symbols
to addresses and vice versa. */
class Memory {
protected:
unsigned int size; /*!< allocated size (in bytes) of myMemory */
public:
unsigned char *myMemory; /*!< THE memory block content itself */
/*! address to symbol map */
std::multimap<unsigned int, std::string> sym;
/*! Creates the memory block
@param size the memory block size */
Memory(int size);
/*! Destructor, frees myMemory */
virtual ~Memory() { avr_free(myMemory); }
/*! Return string with symbols found at address
Seeks for symbols, which are registered for the given address. If the
address isn't equal to a symbol address, but before the next one, then
a offset to symbol address will be added. Returns a empty string, if
nothing is found. (in case of no given symbols!)
@param add the given address
@return a string with all found symbols, concatenated by ',' */
std::string GetSymbolAtAddress(unsigned int add);
/*! Returns the address for a symbol
If the given string is a hex string, the hex value will be converted
and returned. If the symbol isn't found, program aborts.
@param s the symbol string or hex string
@return address for symbol or value of hex string
\todo if the symbol isn't found, it aborts with a message. Maybe it
should raise a exeption to handle this on the caller side? */
unsigned int GetAddressAtSymbol(const std::string &s);
/*! Add the (address, symbol) pair
@param p a std::pair with address and symbol string */
void AddSymbol(std::pair<unsigned int, std::string> p) { sym.insert(p); }
/*! Returns the size in bytes of memory block */
unsigned int GetSize() { return size; }
/*! Write memory data to memory */
virtual void WriteMem(const unsigned char*, unsigned int offset, unsigned int size) = 0;
};
//! Hold data memory block and symbol informations.
/*! Data class is a derived class from Memory, at the moment it's only used for
hold symbols informations about data. NO memory space is allocated! myMemory
will be initialized to NULL! */
class Data : public Memory {
public:
/*! Creates the data memory block */
Data(): Memory(0) {}
void WriteMem(const unsigned char*, unsigned int offset, unsigned int size) {}
};
#endif
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