94 lines
3.7 KiB
C++
94 lines
3.7 KiB
C++
/*
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* Copyright (c) 2013-14, Freescale Semiconductor, Inc.
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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 modification,
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* are permitted provided that the following conditions are met:
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*
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* o Redistributions of source code must retain the above copyright notice, this list
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* of conditions and the following disclaimer.
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*
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* o Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution.
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*
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* o Neither the name of Freescale Semiconductor, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without 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
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, 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 ON
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* 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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#if !defined(_GHSSecInfo_h_)
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#define _GHSSecInfo_h_
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#include "StELFFile.h"
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#include "smart_ptr.h"
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namespace blfwk
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{
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/*!
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* \brief Wrapper around the GHS-specific .secinfo ELF section.
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*
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* ELF files produced by the Green Hills MULTI toolset will have a
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* special .secinfo section. For the most part, this section contains
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* a list of address
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* ranges that should be filled by the C runtime startup code. The
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* address ranges correspond to those of ELF sections whose type is
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* #SHT_NOBITS. The GHS runtime uses this table instead of just filling
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* all #SHT_NOBITS sections because the linker command file can
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* be used to optionally not fill individual sections.
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*
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* The isSectionFilled() methods let calling code determine if an ELF
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* section is found in the .secinfo table. If the section is found,
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* then it should be filled.
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*/
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class GHSSecInfo
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{
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public:
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//! \brief Default constructor.
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GHSSecInfo(StELFFile *elf);
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//! \brief Returns true if there is a .secinfo section present in the ELF file.
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bool hasSecinfo() const { return m_hasInfo; }
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//! \brief Determines if a section should be filled.
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bool isSectionFilled(uint32_t addr, uint32_t length);
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//! \brief Determines if \a section should be filled.
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bool isSectionFilled(const Elf32_Shdr §ion);
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protected:
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#pragma pack(1)
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/*!
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* \brief The structure of one .secinfo entry.
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*/
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struct ghs_secinfo_t
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{
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uint32_t m_clearAddr; //!< Address to start filling from.
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uint32_t m_clearValue; //!< Value to fill with.
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uint32_t m_numBytesToClear; //!< Number of bytes to fill.
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};
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#pragma pack()
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protected:
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StELFFile *m_elf; //!< The parser object for our ELF file.
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bool m_hasInfo; //!< Whether .secinfo is present in the ELF file.
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smart_array_ptr<ghs_secinfo_t>
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m_info; //!< Pointer to the .secinfo entries. Will be NULL if there is no .secinfo section in the file.
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unsigned m_entryCount; //!< Number of entries in #m_info.
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};
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}; // namespace blfwk
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#endif // _GHSSecInfo_h_
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