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Annotation of 42BSD/lib/libc/vax/sys/wait3.c, revision 1.1.1.1

1.1       root        1: /*     @(#)wait3.c     4.2     (Berkeley)      12/28/82        */
                      2: 
                      3: /*
                      4:  * C library -- wait3
                      5:  *
                      6:  * pid = wait3(&status, flags, &rusage);
                      7:  *
                      8:  * pid == -1 if error
                      9:  * status indicates fate of process, if given
                     10:  * flags may indicate process is not to hang or
                     11:  * that untraced stopped children are to be reported.
                     12:  * rusage optionally returns detailed resource usage information
                     13:  */
                     14: #include "SYS.h"
                     15: 
                     16: #define        SYS_wait3       SYS_wait
                     17: 
                     18: ENTRY(wait3)
                     19:        movl    8(ap),r0        /* make it easy for system to get */
                     20:        movl    12(ap),r1       /* these extra arguments */
                     21:        bispsw  $0xf            /* flags wait3() */
                     22:        chmk    $SYS_wait3
                     23:        bcc     noerror
                     24:        movl    r0,_errno
                     25:        mnegl   $1,r0
                     26:        ret
                     27: noerror:
                     28:        tstl    4(ap)           /* status desired? */
                     29:        beql    nostatus        /* no */
                     30:        movl    r1,*4(ap)       /* store child's status */
                     31: nostatus:
                     32:        ret

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