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/*
* \file ocsd_pe_context.h
* \brief OpenCSD : Wrapper class for PE context
*
* \copyright Copyright (c) 2016, ARM Limited. All Rights Reserved.
*/
/*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. 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.
*
* 3. Neither the name of the copyright holder 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 HOLDER 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.
*/
#ifndef ARM_OCSD_PE_CONTEXT_H_INCLUDED
#define ARM_OCSD_PE_CONTEXT_H_INCLUDED
#include "opencsd/ocsd_if_types.h"
/*! @class OcsdPeContext
* @brief Handler for the ocsd_pe_context structure.
*
* Reads and writes structure values, enforcing interaction rules between values
* and flags.
*/
class OcsdPeContext
{
public:
OcsdPeContext();
OcsdPeContext(const ocsd_pe_context *context);
~OcsdPeContext() {};
OcsdPeContext &operator =(const OcsdPeContext &ctxt);
OcsdPeContext &operator =(const ocsd_pe_context *context);
void resetCtxt();
void setSecLevel(const ocsd_sec_level sl) { m_context.security_level = sl; };
void setEL(const ocsd_ex_level el) { m_context.exception_level = el; m_context.el_valid = el > ocsd_EL_unknown ? 1 : 0; };
void setCtxtID(const uint32_t id) { m_context.context_id = id; m_context.ctxt_id_valid = 1; };
void setVMID(const uint32_t id) { m_context.vmid = id; m_context.vmid_valid = 1; };
void set64bit(const bool is64bit) { m_context.bits64 = is64bit ? 1 : 0; };
const ocsd_sec_level getSecLevel() const { return m_context.security_level; };
const ocsd_ex_level getEL() const { return m_context.exception_level; };
const bool ELvalid() const { return (m_context.el_valid == 1); };
const uint32_t getCtxtID() const { return (m_context.ctxt_id_valid == 1) ? m_context.context_id : 0; };
const bool ctxtIDvalid() const { return (m_context.ctxt_id_valid == 1); };
const uint32_t getVMID() const { return (m_context.vmid_valid == 1) ? m_context.vmid : 0; };
const bool VMIDvalid() const { return (m_context.vmid_valid == 1); };
// only allow an immutable copy of the structure out to C-API land.
operator const ocsd_pe_context &() const { return m_context; };
private:
ocsd_pe_context m_context;
};
inline OcsdPeContext::OcsdPeContext()
{
resetCtxt();
}
inline OcsdPeContext::OcsdPeContext(const ocsd_pe_context *context)
{
m_context = *context;
}
inline void OcsdPeContext::resetCtxt()
{
// initialise the context
m_context.bits64 = 0;
m_context.context_id = 0;
m_context.ctxt_id_valid = 0;
m_context.el_valid = 0;
m_context.exception_level = ocsd_EL_unknown;
m_context.security_level = ocsd_sec_secure;
m_context.vmid = 0;
m_context.vmid_valid = 0;
}
inline OcsdPeContext & OcsdPeContext::operator =(const OcsdPeContext &ctxt)
{
m_context = ctxt;
return *this;
}
inline OcsdPeContext & OcsdPeContext::operator =(const ocsd_pe_context *context)
{
m_context = *context;
return *this;
}
#endif // ARM_OCSD_PE_CONTEXT_H_INCLUDED
/* End of File ocsd_pe_context.h */
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