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References: <alpine.DEB.2.20.1705241951001.9182@digraph.polyomino.org.uk>
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From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Fri, 09 Jun 2017 13:29:00 -0000
Message-ID: <CAMe9rOou63sp--WS5cET8L82oXREsoGBwEmxYcX6eh_UZY0dsw@mail.gmail.com>
Subject: Re: [PATCHv2] Add a way to bypass the PLT when calling getauxval
To: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
Cc: GNU C Library <libc-alpha@sourceware.org>, pc@us.ibm.com, 
	"Joseph S. Myers" <joseph@codesourcery.com>
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On Fri, Jun 9, 2017 at 6:13 AM, Tulio Magno Quites Machado Filho
<tuliom@linux.vnet.ibm.com> wrote:
> Ping!
>
> Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com> writes:
>
>> 2017-05-25  Tulio Magno Quites Machado Filho  <tuliom@linux.vnet.ibm.com>
>>
>>       * include/sys/auxv.h (__getauxval): Add a prototype and its
>>       libc_hidden_proto.
>>       * misc/getauxval.c (__getauxval): Use libc_hidden_def.
>> ---
>>  include/sys/auxv.h | 7 +++++++
>>  misc/getauxval.c   | 1 +
>>  2 files changed, 8 insertions(+)
>>
>> diff --git a/include/sys/auxv.h b/include/sys/auxv.h
>> index dede2c3..d46008e 100644
>> --- a/include/sys/auxv.h
>> +++ b/include/sys/auxv.h
>> @@ -1 +1,8 @@
>>  #include <misc/sys/auxv.h>
>> +
>> +#ifndef _ISOMAC
>> +
>> +extern __typeof(getauxval) __getauxval;
>> +libc_hidden_proto (__getauxval)
>> +
>> +#endif  /* !_ISOMAC */
>> diff --git a/misc/getauxval.c b/misc/getauxval.c
>> index c83fbce..14f4298 100644
>> --- a/misc/getauxval.c
>> +++ b/misc/getauxval.c
>> @@ -43,3 +43,4 @@ __getauxval (unsigned long int type)
>>  }
>>
>>  weak_alias (__getauxval, getauxval)
>> +libc_hidden_def (__getauxval)
>> --
>> 2.1.0
>>

Which one is better?

https://sourceware.org/ml/libc-alpha/2017-06/msg00332.html

-- 
H.J.