pushl sp # get current values
pushl $0 # no new values
calls $3,_sigstack # pop args plus signal stack value
pushl sp # get current values
pushl $0 # no new values
calls $3,_sigstack # pop args plus signal stack value
pushl $0
calls $1,_sigblock # get signal mask
movl r0,(r6)+ # save signal mask of caller
pushl $0
calls $1,_sigblock # get signal mask
movl r0,(r6)+ # save signal mask of caller