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Re: Odd function address in function instrumentation routines on ARM

From: Andrew Haley <aph at redhat dot com>
To: gcc-help at gcc dot gnu dot org
Date: Thu, 01 Mar 2012 10:51:48 +0000
Subject: Re: Odd function address in function instrumentation routines on ARM
References: <2291DFF741543F40BD80D953C2816F79013894A1ECAE@MBX-CLUSTER01.ad.fz-juelich.de>

On 03/01/2012 10:39 AM, Lorenz, Daniel wrote:
>  > On 03/01/2012 10:00 AM, Lorenz, Daniel wrote:
>  >> Is the function adress passed to __cyg_profile_func_enter and __cyg_profile_func_exit intenionally odd on ARM,
>  >> even when specifing -falign-function=4?
>  >
>  > Is this thumb code?
> 
> according to readelf:
> Tag_THUMB_ISA_use: Thumb-2

Right, so those function addresses are correct: Bit 0 in LR is the thumb
bit.  if you don't want it, clear it.

Andrew.

References:
- Re: Odd function address in function instrumentation routines on ARM
  - From: Lorenz, Daniel

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