#define CONTEXT_ADDR_FROM_STEM(stem) &context->sc_ ## stem
#elif defined __NetBSD__
#define CONTEXT_ADDR_FROM_STEM(stem) &((context)->uc_mcontext.__gregs[_REG_ ## stem])
#define CONTEXT_ADDR_FROM_STEM(stem) &context->sc_ ## stem
#elif defined __NetBSD__
#define CONTEXT_ADDR_FROM_STEM(stem) &((context)->uc_mcontext.__gregs[_REG_ ## stem])