INDIR(2)            UNIX Programmer's Manual             INDIR(2)

NAME
     indir - indirect system call

ASSEMBLER
     (indir = 0.)
     sys indir; call

     The system call at the location _c_a_l_l is executed.  Execution
     resumes after the _i_n_d_i_r call.

     The main purpose of _i_n_d_i_r is to allow a program to store
     arguments in system calls and execute them out of line in
     the data segment.  This preserves the purity of the text
     segment.

     If _i_n_d_i_r is executed indirectly, it is a no-op.  If the
     instruction at the indirect location is not a system call,
     _i_n_d_i_r returns error code EINVAL; see _i_n_t_r_o(2).

Printed 9/10/82                                                 1