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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* 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.
*
* 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.
*/
#pragma once
#include <AK/Function.h>
#include <AK/HashMap.h>
#include <AK/NonnullRefPtr.h>
#include <AK/OwnPtr.h>
#include <AK/StringView.h>
#include <AK/Vector.h>
#include <LibELF/Image.h>
#ifdef KERNEL
# include <Kernel/VirtualAddress.h>
namespace Kernel {
class Region;
}
#endif
namespace ELF {
class Loader : public RefCounted<Loader> {
public:
static NonnullRefPtr<Loader> create(const u8* data, size_t size, String&& name = String::empty(), bool verbose_logging = true) { return adopt(*new Loader(data, size, move(name), verbose_logging)); }
~Loader();
bool load();
#if defined(KERNEL)
Function<void*(VirtualAddress, size_t, size_t, bool, bool, const String&)> alloc_section_hook;
Function<void*(size_t, size_t)> tls_section_hook;
Function<void*(VirtualAddress, size_t, size_t, size_t, bool r, bool w, bool x, const String&)> map_section_hook;
#endif
VirtualAddress entry() const
{
return m_image.entry();
}
const Image& image() const { return m_image; }
Optional<Image::Symbol> find_demangled_function(const String& name) const
{
return m_image.find_demangled_function(name);
}
bool has_symbols() const { return m_symbol_count; }
String symbolicate(u32 address, u32* offset = nullptr) const;
Optional<Image::Symbol> find_symbol(u32 address, u32* offset = nullptr) const;
private:
explicit Loader(const u8*, size_t, String&& name, bool verbose_logging);
bool layout();
Image m_image;
String m_name;
size_t m_symbol_count { 0 };
struct SortedSymbol {
u32 address;
StringView name;
#ifndef KERNEL
String demangled_name;
Optional<Image::Symbol> symbol;
#endif
};
#ifdef KERNEL
mutable OwnPtr<Kernel::Region> m_sorted_symbols_region;
#else
mutable Vector<SortedSymbol> m_sorted_symbols;
#endif
};
} // end namespace ELF
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