linux/ia64/arch_sigreturn.c

/* offsetof(struct sigframe, sc) */
#define OFFSETOF_STRUCT_SIGFRAME_SC	0xA0
const long addr = *ia64_frame_ptr + 16 +
		  OFFSETOF_STRUCT_SIGFRAME_SC +
		  offsetof(struct sigcontext, sc_mask);
tprints("{mask=");
print_sigset_addr_len(tcp, addr, NSIG / 8);
tprints("}");