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#pragma once
#include <AK/Function.h>
#include <AK/HashMap.h>
#include <AK/OwnPtr.h>
#include <AK/Vector.h>
#include "ELFImage.h"
class ELFLoader {
public:
explicit ELFLoader(const byte*);
~ELFLoader();
bool load();
Function<void*(LinearAddress, size_t, size_t, bool, bool, const String&)> alloc_section_hook;
Function<void*(LinearAddress, size_t, size_t, size_t, bool, bool, const String&)> map_section_hook;
char* symbol_ptr(const char* name);
void add_symbol(String&& name, char* ptr, unsigned size);
bool allocate_section(LinearAddress, size_t, size_t alignment, bool is_readable, bool is_writable);
bool map_section(LinearAddress, size_t, size_t alignment, size_t offset_in_image, bool is_readable, bool is_writable);
private:
bool layout();
bool perform_relocations();
void export_symbols();
void* lookup(const ELFImage::Symbol&);
char* area_for_section(const ELFImage::Section&);
char* area_for_section_name(const char*);
struct PtrAndSize {
PtrAndSize() { }
PtrAndSize(char* p, unsigned s)
: ptr(p)
, size(s)
{
}
char* ptr { nullptr };
unsigned size { 0 };
};
ELFImage m_image;
HashMap<String, PtrAndSize> m_symbols;
HashMap<String, char*> m_sections;
};
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