50 lines
1.2 KiB
C++
50 lines
1.2 KiB
C++
/**
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* \brief Generic dynamic section address handling
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* \author Sebastian Sumpf
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* \date 2016-02-17
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*/
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/*
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* Copyright (C) 2016-2017 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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#ifndef _INCLUDE__DYNAMIC_GENERIC_H_
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#define _INCLUDE__DYNAMIC_GENERIC_H_
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extern const unsigned long _GLOBAL_OFFSET_TABLE_[] __attribute__((visibility("hidden")));
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extern unsigned long _DYNAMIC[] __attribute__((visibility("hidden")));
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namespace Linker {
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/**
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* Address of .dynamic section in GOT
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*/
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static inline unsigned long dynamic_address_got()
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{
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return _GLOBAL_OFFSET_TABLE_[0];
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}
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/**
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* Address of .dynamic section from symbol
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*/
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static inline unsigned long dynamic_address()
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{
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return (unsigned long)&_DYNAMIC;
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}
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/**
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* Return the run-time load address of the shared object.
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*/
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static inline unsigned long relocation_address(void)
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{
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return dynamic_address() < dynamic_address_got() ?
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dynamic_address_got() - dynamic_address() :
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dynamic_address() - dynamic_address_got();
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}
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}
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#endif /* _INCLUDE__DYNAMIC_GENERIC_H_ */
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