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- id <m0srAul-000sObC>; Fri, 8 Sep 95 23:24 MET DST
- Message-Id: <m0srAul-000sObC@leibniz.math.fu-berlin.de>
- From: wojtek@math.fu-berlin.de (Wojciech Was)
- Subject: Re: Svga & Linux -- workaround
- To: executor@nacm.com
- Date: Fri, 8 Sep 1995 23:24:46 +0200 (MET DST)
- Reply-To: wojtek@math.fu-berlin.de
- In-Reply-To: <m0sr4yu-000GOkC@gwar.ardi.com> from "Mat Hostetter" at Sep 8, 95 09:04:00 am
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-
- For those, who cannot wait for 1.99o8 and other happy experimenters.
-
- > Here's a message from the linux-svgalib mailing list yesterday, from
- ...........
- > > I'll investigate further, but if I don't find a simple solution I'll make
- > > vga_safety_fork a noop until a working solution is found.
- ...........
-
- A quick'n'dirty workaround:
-
- Create a LD_PRELOAD object which patches vga_safety_fork away. Something like:
-
- $ cat > no_safety_fork.c
- void no_safety_fork () {}
- ^D
- $ gcc -b i486-linuxaout -O2 -fomit-frame-pointer -c -o foo.o no_safety_fork.c
- $ ld -m i386linux -x -Ttext 0x50000000 -o no_safety_fork.o foo.o -lvga \
- -u __PLT__vga_safety_fork \
- -defsym preload_no_safety_fork=__PLT__vga_safety_fork
-
- Move the resulting object (no_safety_fork.o) where you keep the a.out libs
- and start executor with:
-
- $ LD_AOUT_PRELOAD=<path_to_no_safety_fork.o> executor-svga
-
- Some ancient ld.so's will require LD_PRELOAD (without the AOUT).
-
- It works for me (sort of) on Trio64 (S3-like thing), I still need to restore
- the textmode on return from executor. For further information read the file
- ld-so/example/README.preload in the ld.so distribution.
-
- As the above is a big kludge of unknown value, I am _not_ responsible
- for anything with respect to it.
-
- - Wojtek
-
- -------------------------------------------------------------
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