trc_mem_acc_base.h

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 * may be used to endorse or promote products derived from this software without 
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 * 
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#ifndef ARM_TRC_MEM_ACC_BASE_H_INCLUDED
#define ARM_TRC_MEM_ACC_BASE_H_INCLUDED
 
#include "opencsd/ocsd_if_types.h"
#include <string>

class TrcMemAccessorBase
{
public:

    enum MemAccTypes {
        MEMACC_UNKNOWN,
        MEMACC_FILE,        //<! Binary data file accessor
        MEMACC_BUFPTR,      //<! memory buffer accessor
        MEMACC_CB_IF,       //<! callback interface accessor - use for live memory access
    };

    TrcMemAccessorBase(MemAccTypes type);
    
    TrcMemAccessorBase(MemAccTypes type, ocsd_vaddr_t startAddr, ocsd_vaddr_t endAddr);
    
    virtual ~TrcMemAccessorBase() {};
       
    void setRange(ocsd_vaddr_t startAddr, ocsd_vaddr_t endAddr);

    virtual const bool addrInRange(const ocsd_vaddr_t s_address) const;
 

    virtual const bool addrStartOfRange(const ocsd_vaddr_t s_address) const;

    virtual const uint32_t bytesInRange(const ocsd_vaddr_t s_address, const uint32_t reqBytes) const;
    
    virtual const bool overLapRange(const TrcMemAccessorBase *p_test_acc) const;

    virtual const uint32_t readBytes(const ocsd_vaddr_t s_address, const ocsd_mem_space_acc_t memSpace, const uint8_t trcID, const uint32_t reqBytes, uint8_t *byteBuffer) = 0;

    virtual const bool validateRange();
 
 
    const enum MemAccTypes getType() const { return m_type; };
 
    /* handle memory spaces */
    void setMemSpace(ocsd_mem_space_acc_t memSpace) { m_mem_space = memSpace; };
    const ocsd_mem_space_acc_t getMemSpace() const { return m_mem_space; };
    const bool inMemSpace(const ocsd_mem_space_acc_t mem_space) const { return (bool)(((uint8_t)m_mem_space & (uint8_t)mem_space) != 0); }; 
    
    /* memory access info logging */
    virtual void getMemAccString(std::string &accStr) const;
 
    static void getMemAccSpaceString(std::string& spaceStr, const ocsd_mem_space_acc_t mem_space);
 
protected:
    ocsd_vaddr_t m_startAddress;   
    ocsd_vaddr_t m_endAddress;     
    const MemAccTypes m_type;       
    ocsd_mem_space_acc_t m_mem_space; 
};
 
inline TrcMemAccessorBase::TrcMemAccessorBase(MemAccTypes accType, ocsd_vaddr_t startAddr, ocsd_vaddr_t endAddr) :
     m_startAddress(startAddr),
     m_endAddress(endAddr),
     m_type(accType),
     m_mem_space(OCSD_MEM_SPACE_ANY)
{
}
 
inline TrcMemAccessorBase::TrcMemAccessorBase(MemAccTypes accType) :
     m_startAddress(0),
     m_endAddress(0),
     m_type(accType),
     m_mem_space(OCSD_MEM_SPACE_ANY)
{
}
 
inline void TrcMemAccessorBase::setRange(ocsd_vaddr_t startAddr, ocsd_vaddr_t endAddr)
{
     m_startAddress = startAddr;
     m_endAddress = endAddr;
}
 
inline const bool TrcMemAccessorBase::addrInRange(const ocsd_vaddr_t s_address) const
{
    return (s_address >= m_startAddress) && (s_address <= m_endAddress);
}
 
inline const bool TrcMemAccessorBase::addrStartOfRange(const ocsd_vaddr_t s_address) const
{
    return (s_address == m_startAddress);
}
 
 
inline const uint32_t TrcMemAccessorBase::bytesInRange(const ocsd_vaddr_t s_address, const uint32_t reqBytes) const
{
    ocsd_vaddr_t bytesInRange = 0;
    if(addrInRange(s_address))  // start not in range, return 0.
    {
        // bytes available till end address.
        bytesInRange = m_endAddress - s_address + 1;
        if(bytesInRange > reqBytes)
            bytesInRange = reqBytes;
    }
    return (uint32_t)bytesInRange;
}
 
inline const bool TrcMemAccessorBase::overLapRange(const TrcMemAccessorBase *p_test_acc) const
{
    if( addrInRange(p_test_acc->m_startAddress) || 
        addrInRange(p_test_acc->m_endAddress)
        )
        return true;
    return false;
}
 
inline const bool TrcMemAccessorBase::validateRange()
{
    if(m_startAddress & 0x1) // at least hword aligned for thumb
        return false;
    if((m_endAddress + 1) & 0x1)
        return false;
    if(m_startAddress == m_endAddress) // zero length range.
        return false;   
    if(m_startAddress > m_endAddress) // values bakcwards  /  invalid
        return false;
    return true;
}
 
 
class TrcMemAccFactory
{
public:
    static ocsd_err_t CreateBufferAccessor(TrcMemAccessorBase **pAccessor, const ocsd_vaddr_t s_address, const uint8_t *p_buffer, const uint32_t size);
    static ocsd_err_t CreateFileAccessor(TrcMemAccessorBase **pAccessor, const std::string &pathToFile, ocsd_vaddr_t startAddr, size_t offset = 0, size_t size = 0);
    static ocsd_err_t CreateCBAccessor(TrcMemAccessorBase **pAccessor, const ocsd_vaddr_t s_address, const ocsd_vaddr_t e_address, const ocsd_mem_space_acc_t mem_space);
    
    static void DestroyAccessor(TrcMemAccessorBase *pAccessor);
private:
    TrcMemAccFactory() {};
    ~TrcMemAccFactory() {};
};
 
#endif // ARM_TRC_MEM_ACC_BASE_H_INCLUDED
 
/* End of File trc_mem_acc_base.h */