long do_sigreturn(CPUS390XState *env) { sigframe *frame; abi_ulong frame_addr = env->regs[15]; qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__, (unsigned long long)frame_addr); target_sigset_t target_set; sigset_t set; if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { goto badframe; } if (__get_user(target_set.sig[0], &frame->sc.oldmask[0])) { goto badframe; } target_to_host_sigset_internal(&set, &target_set); sigprocmask(SIG_SETMASK, &set, NULL); /* ~_BLOCKABLE? */ if (restore_sigregs(env, &frame->sregs)) { goto badframe; } unlock_user_struct(frame, frame_addr, 0); return env->regs[2]; badframe: unlock_user_struct(frame, frame_addr, 0); force_sig(TARGET_SIGSEGV); return 0; }