jit.cpp

void* asjit::jitcode(dasm_State **state)
{
	size_t sz;
	void* buf;
	dasm_link(state, &sz);
#ifdef _WIN32
	buf = VirtualAlloc(0, sz, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
#else
	buf = mmap(0, sz, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
#endif
	dasm_encode(state, buf);
#ifdef _WIN32
	{DWORD dwOld; VirtualProtect(buf, sz, PAGE_EXECUTE_READ, &dwOld); }
#else
	mprotect(buf, sz, PROT_READ | PROT_EXEC);
#endif
	return buf;
}