[PATCH, i386]: Fix PR 41900, call *%esp shouldn't be generated because of CPU errata

[Jakub Jelinek]

On Tue, Nov 03, 2009 at 06:27:21PM +0100, Uros Bizjak wrote:
>>> No, this test failed due to missing "volatile" (fixed now). AFAICS, it
>>> works OK on Fedora 11 and CentOS 5.3.
>>>      
>> The extra volatile doesn't help at all, it still fails here (Fedora 11,
>> x86_64 kernel, SELinux enforcing).
>>    
>
> Hm, indeed. Is there a solution by somehow enabling execution (like  
> trampolines)?

You can assemble with -Wa,--execstack or link with -Wl,-z,execstack.
But it helps only in some cases, some versions of the policy won't allow
unconfined processes to have exec stack, you'd need to chcon -t java_exec_t
or similar.  This is highly Linux specific though.

	Jakub