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Execute code in kernel mode.

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# 29  
Old 03-16-2011
I'm compiling c++ with extern "C" (without it doesn't work). I'm compiling exactly the same code that works on 64 bits. I'm only changing -m32 -march-i386 for compiler and -m32 for linker.

Code:
$ ldd /usr/games/quake4/quake4.x86
    linux-gate.so.1 =>  (0xf774b000)
    /usr/lib32/openglhack32.so (0xf7746000) <-------- LOOK AT THIS IS IMPLEMENTED VIA LD_PRELOAD
    libSDL-1.2.so.0 => /usr/lib32/libSDL-1.2.so.0 (0xf7690000)
    libpthread.so.0 => /lib32/libpthread.so.0 (0xf7676000)
    libdl.so.2 => /lib32/libdl.so.2 (0xf7672000)
    libX11.so.6 => /usr/lib32/libX11.so.6 (0xf7555000)
    libXext.so.6 => /usr/lib32/libXext.so.6 (0xf7545000)
    libz.so.1 => /usr/lib32/libz.so.1 (0xf7530000)
    libstdc++.so.6 => /usr/lib32/libstdc++.so.6 (0xf7445000)
    libm.so.6 => /lib32/libm.so.6 (0xf741e000)
    libgcc_s.so.1 => /usr/lib32/libgcc_s.so.1 (0xf7402000)
    libc.so.6 => /lib32/libc.so.6 (0xf72a7000)
    libGL.so.1 => /usr/lib32/nvidia-current/libGL.so.1 (0xf71de000)
    libasound.so.2 => /usr/lib32/libasound.so.2 (0xf7118000)
    librt.so.1 => /lib32/librt.so.1 (0xf710e000)
    /lib/ld-linux.so.2 (0xf774c000)
    libxcb.so.1 => /usr/lib32/libxcb.so.1 (0xf70f4000)
    libnvidia-tls.so.260.19.06 => /usr/lib32/nvidia-current/tls/libnvidia-tls.so.260.19.06 (0xf70f2000)
    libnvidia-glcore.so.260.19.06 => /usr/lib32/nvidia-current/libnvidia-glcore.so.260.19.06 (0xf5a55000)
    libXau.so.6 => /usr/lib32/libXau.so.6 (0xf5a51000)
    libXdmcp.so.6 => /usr/lib32/libXdmcp.so.6 (0xf5a4a000)

I noticed that the library appears on the list because I used LD_PRELOAD. But it still seem not to work, I guess because the code is not correct or something similar, because the speedhack works.

Yes, the 100% of programs (I've tested) are 64 bit working and 32 bit failing.

Thank you for your interest again.
# 30  
Old 03-16-2011
Quote:
Originally Posted by lilezek
I'm compiling c++ with extern "C" (without it doesn't work).
Compiling as C++ pulls in a whole bunch of extra symbols and libraries even when you don't use them. I'm not sure whether there's any interfering symbols or not.
Quote:
I'm compiling exactly the same code that works on 64 bits. I'm only changing -m32 -march-i386 for compiler and -m32 for linker.
Hm. What other flags are there? Everything seems to use -fPIC for x86_64 but in 32-bit you see that less.

Beyond that I'm running out of suggestions. I had a strong suspicion your programs were using a different version of libc than the games were, but that seems to be wrong... I wish the dynamic loader's error messages weren't so cryptic.
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