Fix ____longjmp_chk for ppc(64)

[Andreas Schwab]

Richard Henderson <rth@twiddle.net> writes:

> On 06/24/2009 05:27 AM, Andreas Schwab wrote:
>> +	mflr	r0;					\
>> +	std	r0,16(r1);				\
>> +	stdu	r1,-112(r1);				\
>> +	cfi_adjust_cfa_offset (112);			\
>> +	cfi_offset (lr, 16);				\
>>   	ld	r3,.LC1@toc(2);				\
>>   	bl	HIDDEN_JUMPTARGET (__fortify_fail);	\
>> +	addi	r1,r1,112;				\
>> +	cfi_adjust_cfa_offset (-112);			\
>> +	cfi_same_value (lr);				\
>>   .Lok:
>
> __fortify_fail doesn't return, does it?  So, why are you
> adding the stack adjustment after the return?

Just to be able to attach the cfi to it.  It would be wrong to attach it
to the branch.

Andreas.

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Andreas Schwab, aschwab@redhat.com
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