fix readdir not to set ENOENT when directory is removed while reading

[musl] / src / internal / superh / syscall.s

.global __syscall
.type   __syscall, @function
__syscall:
        ! The kernel syscall entry point documents that the trap number indicates
        ! the number of arguments being passed, but it then ignores that information.
        ! Since we do not actually know how many arguments are being passed, we will
        ! say there are six, since that is the maximum we support here.
        mov r4, r3
        mov r5, r4
        mov r6, r5
        mov r7, r6
        mov.l @r15, r7
        mov.l @(4,r15), r0
        mov.l @(8,r15), r1
        trapa #22
        or r0, r0
        or r0, r0
        or r0, r0
        or r0, r0
        or r0, r0
        rts
         nop