#include <pslang/jit/executable.hpp>

#include <stdexcept>

#ifdef __linux__
#include <sys/mman.h>
#endif

namespace pslang::jit
{

	compiled_module make_host_executable(compiled_module module)
	{
#ifdef __linux__
		if (module.abi != abi::itanium)
			throw std::runtime_error("Abi mismatch");

		auto ptr = (std::uint8_t *)mmap(nullptr, module.memory.size, PROT_READ | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
		auto shared_ptr = std::shared_ptr<std::uint8_t>(ptr, [size = module.memory.size](std::uint8_t * ptr){ munmap(ptr, size); });

		return compiled_module {
			.memory = blob(shared_ptr, module.memory.size),
			.symbol_table = std::move(module.symbol_table),
			.entry_point = module.entry_point,
			.abi = module.abi,
		};
#else
		throw std::runtime_error("Host-executable modules are not supported for this platform");
#endif
	}

}