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// inspired from code from mozilla: https://github.com/mozilla/rr/blob/master/src/Registers.cc
#ifndef REGISTER_REF_H_20191119_
#define REGISTER_REF_H_20191119_
#include <cassert>
#include <climits>
#include <cstddef>
#include <cstdint>
#include <cstring>
class RegisterRef {
public:
constexpr RegisterRef(const char *name, const void *ptr, std::size_t size)
: name_(name), ptr_(ptr), size_(size) {
}
constexpr RegisterRef() = default;
RegisterRef(const RegisterRef &) = default;
RegisterRef &operator=(const RegisterRef &) = default;
public:
const void *data() const { return ptr_; }
public:
bool operator==(const RegisterRef &rhs) const { return size_ == rhs.size_ && std::memcmp(ptr_, rhs.ptr_, size_) == 0; }
bool operator!=(const RegisterRef &rhs) const { return size_ != rhs.size_ || std::memcmp(ptr_, rhs.ptr_, size_) != 0; }
public:
bool valid() const { return ptr_ != nullptr; }
public:
// The name of this register.
const char *name_ = nullptr;
// The ptr to register in state structure.
const void *ptr_ = nullptr;
// The size of the register. 0 means we cannot read it.
std::size_t size_ = 0;
};
#endif
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