long do_sigreturn(CPUX86State *env) { struct sigframe *frame; abi_ulong frame_addr = env->regs[R_ESP] - 8; target_sigset_t target_set; sigset_t set; int eax, i; #if defined(DEBUG_SIGNAL) fprintf(stderr, "do_sigreturn\n"); #endif if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) goto badframe; /* set blocked signals */ if (__get_user(target_set.sig[0], &frame->sc.oldmask)) goto badframe; for(i = 1; i < TARGET_NSIG_WORDS; i++) { if (__get_user(target_set.sig[i], &frame->extramask[i - 1])) goto badframe; } target_to_host_sigset_internal(&set, &target_set); do_sigprocmask(SIG_SETMASK, &set, NULL); /* restore registers */ if (restore_sigcontext(env, &frame->sc, &eax)) goto badframe; unlock_user_struct(frame, frame_addr, 0); return eax; badframe: unlock_user_struct(frame, frame_addr, 0); force_sig(TARGET_SIGSEGV); return 0; }