long do_rt_sigreturn(CPUS390XState *env) { rt_sigframe *frame; abi_ulong frame_addr = env->regs[15]; sigset_t set; trace_user_do_rt_sigreturn(env, frame_addr); if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { goto badframe; } target_to_host_sigset(&set, &frame->uc.tuc_sigmask); set_sigmask(&set); /* ~_BLOCKABLE? */ if (restore_sigregs(env, &frame->uc.tuc_mcontext)) { goto badframe; } if (do_sigaltstack(frame_addr + offsetof(rt_sigframe, uc.tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT) { goto badframe; } unlock_user_struct(frame, frame_addr, 0); return -TARGET_QEMU_ESIGRETURN; badframe: unlock_user_struct(frame, frame_addr, 0); force_sig(TARGET_SIGSEGV); return 0; }