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#pragma once
#include <cstdint>
#include <functional>
#include <map>
#include <memory>
#include <string>
#include <elfio/elfio.hpp>
enum class Architecture {
RV32,
RV64,
};
class ELF {
public:
// Open a RISC-V ELF file. Throws an exception if the file doesn't
// exist or isn't a RISC-V ELF file.
static ELF open(const std::string &filename);
// Return the architecture (RV32/64).
Architecture architecture() const;
// Return the entry point (where execution should begin).
uint64_t entry() const;
using ElfWriteFn = std::function<void(
uint64_t, // address
const uint8_t *, // data
uint64_t // length
)>;
// Call `writer()` to load all of the loadable sections into memory (or you
// can do anything else with them).
void load(ElfWriteFn writer) const;
// Load and return the symbol table. It isn't cached - every time you call
// this the entire symbol table is loaded from disk. Note only STT_FUNC,
// STT_OBJECT, STT_COMMON and STT_NOTYPE symbols that are not SHN_UNDEF are
// returned.
std::map<std::string, uint64_t> symbols() const;
private:
explicit ELF(std::unique_ptr<ELFIO::elfio> reader);
// Unfortunately there's a bug in ELFIO which means we can't std::move() it,
// so we have to put it in a unique_ptr.
// https://github.com/serge1/ELFIO/issues/157
std::unique_ptr<ELFIO::elfio> m_reader;
};
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