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Message-ID: <52A7641C.7020400@redhat.com>
Date: Tue, 10 Dec 2013 18:57:00 -0000
From: "Carlos O'Donell" <carlos@redhat.com>
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To: "Joseph S. Myers" <joseph@codesourcery.com>,        Will Newton <will.newton@linaro.org>
CC: libc-ports@sourceware.org, Patch Tracking <patches@linaro.org>
Subject: Re: [PATCH] ARM: Don't apply pointer encryption to the frame pointer
References: <52A74F24.8000805@linaro.org> <Pine.LNX.4.64.1312101806240.15324@digraph.polyomino.org.uk>
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On 12/10/2013 01:06 PM, Joseph S. Myers wrote:
> On Tue, 10 Dec 2013, Will Newton wrote:
> 
>> 2013-12-10  Will Newton  <will.newton@linaro.org>
>>
>> 	* sysdeps/arm/__longjmp.S: Don't apply pointer encryption
>> 	to fp register.
>> 	* sysdeps/arm/setjmp.S: Likewise.
>>  	* sysdeps/arm/include/bits/setjmp.h (JMP_BUF_REGLIST): Add
>> 	fp to register list, remove a4.
>> 	* sysdeps/unix/sysv/linux/arm/sysdep.h: (PTR_MANGLE_LOAD):
>> 	New macro.
> 
> OK, presuming you've tested this with the glibc testsuite.
> 

Is it really true that ruby checks the FP?

I don't see such code? Can you please point it out?

Cheers,
Carlos.