Re: [Qemu-devel] [PATCH v4 2/2] Build usermode targets as PIE

[Kirill A. Shutemov]

On Fri, Sep 4, 2009 at 12:58 PM, Arnaud Patard<address@hidden> wrote:
> "Kirill A. Shutemov" <address@hidden> writes:
>
> Hi,
>
> [...]
>
>> +cat > $TMPC <<EOF
>> +int main() {
>> +     static __thread int i = 0;
>> +     i++;
>> +     return 0;
>> +}
>> +EOF
>> +
>> +if test "$user_pie" != "no" ; then
>> +    if compile_prog "-fpie" "-pie -Wl,--fatal-warnings 
>> -Wl,--warn-shared-textrel"; then
>> +        user_pie="yes"
>> +    else
>> +        if test "$user_pie" = "yes"; then
>> +            echo "Toolchain has no proper PIE support"
>> +            exit 1
>> +        else
>> +            user_pie="no"
>> +        fi
>> +    fi
>> +fi
>
> Unfortunately, the broken mips toolchain pass this test. When you
> compile, you're getting no warning at all. Moreover, the failure is
> triggered at run-time (and this test doesn't trigger it). See
> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=526961 if you want
> something which segfault with pie.
> I don't know if there are some other non-mips toolchains with broken pie
> and what's their behaviour. I hope it's crashing too...

Where can I get a mips cross-compiler with this issue to play?