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117 lines
4.2 KiB
117 lines
4.2 KiB
/*
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* \file ocsd_pe_context.h
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* \brief OpenCSD : Wrapper class for PE context
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*
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* \copyright Copyright (c) 2016, ARM Limited. All Rights Reserved.
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*/
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/*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY 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 OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef ARM_OCSD_PE_CONTEXT_H_INCLUDED
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#define ARM_OCSD_PE_CONTEXT_H_INCLUDED
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#include "opencsd/ocsd_if_types.h"
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/*! @class OcsdPeContext
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* @brief Handler for the ocsd_pe_context structure.
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*
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* Reads and writes structure values, enforcing interaction rules between values
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* and flags.
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*/
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class OcsdPeContext
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{
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public:
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OcsdPeContext();
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OcsdPeContext(const ocsd_pe_context *context);
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~OcsdPeContext() {};
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OcsdPeContext &operator =(const OcsdPeContext &ctxt);
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OcsdPeContext &operator =(const ocsd_pe_context *context);
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void resetCtxt();
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void setSecLevel(const ocsd_sec_level sl) { m_context.security_level = sl; };
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void setEL(const ocsd_ex_level el) { m_context.exception_level = el; m_context.el_valid = el > ocsd_EL_unknown ? 1 : 0; };
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void setCtxtID(const uint32_t id) { m_context.context_id = id; m_context.ctxt_id_valid = 1; };
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void setVMID(const uint32_t id) { m_context.vmid = id; m_context.vmid_valid = 1; };
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void set64bit(const bool is64bit) { m_context.bits64 = is64bit ? 1 : 0; };
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const ocsd_sec_level getSecLevel() const { return m_context.security_level; };
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const ocsd_ex_level getEL() const { return m_context.exception_level; };
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const bool ELvalid() const { return (m_context.el_valid == 1); };
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const uint32_t getCtxtID() const { return (m_context.ctxt_id_valid == 1) ? m_context.context_id : 0; };
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const bool ctxtIDvalid() const { return (m_context.ctxt_id_valid == 1); };
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const uint32_t getVMID() const { return (m_context.vmid_valid == 1) ? m_context.vmid : 0; };
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const bool VMIDvalid() const { return (m_context.vmid_valid == 1); };
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// only allow an immutable copy of the structure out to C-API land.
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operator const ocsd_pe_context &() const { return m_context; };
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private:
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ocsd_pe_context m_context;
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};
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inline OcsdPeContext::OcsdPeContext()
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{
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resetCtxt();
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}
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inline OcsdPeContext::OcsdPeContext(const ocsd_pe_context *context)
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{
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m_context = *context;
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}
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inline void OcsdPeContext::resetCtxt()
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{
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// initialise the context
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m_context.bits64 = 0;
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m_context.context_id = 0;
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m_context.ctxt_id_valid = 0;
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m_context.el_valid = 0;
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m_context.exception_level = ocsd_EL_unknown;
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m_context.security_level = ocsd_sec_secure;
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m_context.vmid = 0;
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m_context.vmid_valid = 0;
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}
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inline OcsdPeContext & OcsdPeContext::operator =(const OcsdPeContext &ctxt)
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{
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m_context = ctxt;
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return *this;
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}
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inline OcsdPeContext & OcsdPeContext::operator =(const ocsd_pe_context *context)
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{
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m_context = *context;
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return *this;
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}
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#endif // ARM_OCSD_PE_CONTEXT_H_INCLUDED
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/* End of File ocsd_pe_context.h */
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