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- Since COFF-encapsulation is obsolete, this may not be needed anymore.
-
- Return-Path: <jkp@sauna.hut.fi>
- Date: Mon, 10 Apr 89 10:13:45 +0300
- From: Jyrki Kuoppala <jkp@sauna.hut.fi>
- Sender: jkp@sauna.hut.fi
- To: info-gcc@prep.ai.mit.edu
- Subject: Kernel fix needed for Altos 3068 to get coff-encapsulation working right
- Organization: Helsinki University of Technology, Finland.
-
- Here's a description how to fix a kernel bug in Altos 3068 and get
- gcc-compiled programs working.
-
- Author: Jyrki Kuoppala (jkp@cs.hut.fi)
- Last modified: Mon Apr 10 09:28:40 1989
-
- There's a bug in the Altos 3068 kernel that causes gcc-compiled
- programs to fail in certain situations when the machine has a heavy
- load and also in some other situations. The bug exists at least in
- SVR 2.2 1.0gT1 and SVR 2.2 1.0e.
-
- If you have source code to your system, apply the following change to
- os/exec.c (function gethead):
-
- Change the lines containing
-
- u.u_exdata.ux_tstart = sizeof(struct naout) +
- sizeof(struct filhd) + (ep->ef.nscns * sizeof(struct scnhdr));
-
- to
-
- u.u_exdata.ux_tstart = u.u_exdata.ux_txtorg;
-
- If you only have binary, use sdb to find out the address of the
- previous lines (on our system it's gethead+0x140) and use your
- favourite binary editor to change the bytes '3036 0162 fffc 0002 0280
- 0000' to '23f9 01fb f4ca 01fb f4c2 6016'. This may or may not work in
- your case, depending on the version of the operating system and the
- phase of the moon.
-
- Here's what is just before gethead+0x140 to ease finding out the right place:
-
- 0x9224 (gethead+0x122): 23f9 01fb f4ca 01fb f4ce mov.l &0x1fbf4ca.L,&0
- x1fbf4ce.L []
- 0x922e (gethead+0x12c): 23f9 01fb f4c6 01fb f4ca mov.l &0x1fbf4c6.L,&0
- x1fbf4ca.L []
- 0x9238 (gethead+0x136): 23f9 01fb f4c2 01fb f4c6 mov.l &0x1fbf4c2.L,&0
- x1fbf4c6.L []
-
- Good luck !
-
- //Jyrki
-
- jkp@cs.hut.fi
-
-