1 long regs[PT_MAX + 1]; 2 3 if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, (long)regs) < 0) { 4 perror_msg("sigreturn: PTRACE_GETREGS"); 5 return 0; 6 } 7 const long addr = regs[PT_USP] + offsetof(struct sigcontext, oldmask); 8 9 tprints("{mask="); 10 print_sigset_addr_len(tcp, addr, NSIG / 8); 11 tprints("}"); 12