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Date: Thu, 16 Oct 2014 08:09:01 +0200
From: Felix Janda <>
Subject: debugging problem with musl ld and qemu-ppc

Hello list,

can you maybe help me debugging the following problem with qemu-ppc?
It gives an invalid instruction error after doing:

tar -xf crossx86-powerpc-linux-musl-0.9.9.tar.xz
# (I get something similar for other versions of musl or gcc)
cat > a.s <<EOF
cat > b.c <<EOF
int main(void) { return 0; }
./powerpc-linux-musl/bin/powerpc-linux-musl-gcc -o good b.c
./powerpc-linux-musl/bin/powerpc-linux-musl-gcc -o bad a.s b.c
# set up symlinks to make 'qemu-ppc good' work
qemu-ppc bad

After musl ld has done its work it jumps to libgcc's _init and
very soon tries to execute some data.

When executing in some chroot the 'qemu-ppc -d in_asm' for
good and bad is exactly the same up to two instructions in
libgcc until it diverges (and bad crashes).

Do you have any ideas what could be the problem?


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