mc_srr0
mc->mc_srr0 = (uint32_t) _ctx_start;
ucp->uc_mcontext.mc_srr0 = (uint32_t) ctx_wrapper;
mc->mc_srr0 = *(uintptr_t *)_ctx_start;
mc->mc_srr0 = (uintptr_t) _ctx_start;
ucp->uc_mcontext.mc_srr0 = (uint64_t) ctx_wrapper;
td, uc.uc_mcontext.mc_srr0, uc.uc_mcontext.mc_gpr[1]);
td, uc.uc_mcontext.mc_srr0, uc.uc_mcontext.mc_gpr[1]);