From owner-freebsd-hackers Wed Jul 10 13: 5:48 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 2F5C237B400; Wed, 10 Jul 2002 13:05:44 -0700 (PDT) Received: from falcon.mail.pas.earthlink.net (falcon.mail.pas.earthlink.net [207.217.120.74]) by mx1.FreeBSD.org (Postfix) with ESMTP id CC8B043E31; Wed, 10 Jul 2002 13:05:43 -0700 (PDT) (envelope-from tlambert2@mindspring.com) Received: from pool0451.cvx22-bradley.dialup.earthlink.net ([209.179.199.196] helo=mindspring.com) by falcon.mail.pas.earthlink.net with esmtp (Exim 3.33 #1) id 17SNiW-0003Ux-00; Wed, 10 Jul 2002 13:05:40 -0700 Message-ID: <3D2C9369.87741027@mindspring.com> Date: Wed, 10 Jul 2002 13:04:57 -0700 From: Terry Lambert X-Mailer: Mozilla 4.7 [en]C-CCK-MCD {Sony} (Win98; U) X-Accept-Language: en MIME-Version: 1.0 To: Serguei Tzukanov Cc: freebsd-platforms@freebsd.org, freebsd-hackers@freebsd.org Subject: Re: A question about S/390 port References: <200207101554.09734.tzukanov@narod.ru> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG It sounds like a tty driver problem. Does the emulator even support this? Do you have a package, so that people can install your developement environment and use your patches so they can participate in helping you code? -- Terry Serguei Tzukanov wrote: > > Some working notes. > > I've written the libc/csu part, kernel successfully starts init and init > forks off for the execve of -sh, > (http://tzukanov.narod.ru/freebsd390/bootlog.txt) > but there is problem with printing from userland, e.g. output from > userland are not visible. Write syscall to descs 1,2 in init returns > with success. > I'm sure it's something very stupid, so maybe someone have a clue? > > And another problem (well-known?): > __syscall returns 64-bit value but mmap returns 4-byte word in the > td->td_retval[0]. Wrapper for mmap in libc casts 64 rv to 32 and alays > gets zero. This leads to truncating to zero due to cast on 32-bit > big-endian architectures. > The solution is obvious - using constructs like > td->td_retval[_QUAD_LOWWORD] = xxx in MI code. > > For now I just avoid it with hack in syscall handler. > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hackers" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message