On Tue, Oct 20, 2015 at 06:14:19PM -0700, Andrey Smirnov wrote: > >> +Not all of the I/O primitives neccessary to implement a full > >> +filesystem are exposed in ARM semihosting API and because of that some > >> +aspects of filesystem funcionality are missing. Implementation does > >> +not have support for listing directories. This means a > >> +:ref:`command_ls` to a SMHFS-mounted path will show an empty > >> +directory. Nevertheless, the files are there. > > > > Is adding ls support a matter of implementing it? Does the semihosting > > protocol support ls? > > Unfortunately the protocol doesn't support any directory related > operations. What a pitty. > It is possible to implement custom semihosting "syscalls" > and it wouldn't be that hard to add support of those to OpenOCD, but > that would leave out other debugging tools. Would be nice to have, but not worth the hassle of creating custom extensions to the spec. > > > > > >> + > >> +Example:: > >> + > >> + mount -t smhfs /dev/null /mnt/smhfs > > > > Are actions on the host required to do that? Maybe some example for > > using this with openocd would be useful. > > I completely forgot to add that to the documentation. Will fix that in > the next version of the patch. > > >> + > >> + if (semihosting_remove(pathname) != 0) > >> + return semihosting_errno(); > > > > Are the errnos semihosting returns compatible with the barebox errnos? > > I can't speak for any implementation other that OpenOCD's, but what > that tool does is it returns the value of host's 'errno' after > executing a corresponding syscall. Ok, then we should be able to reuse it as error code. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
