Re: Linker question

[palparni <palparni at gmail dot com>]

Hi,

Thanks for your help, it was useful. I'll see what I can do based on your
answers.

Regards,
Alpar


Ramana Radhakrishnan wrote:
> 
> On Thu, Oct 2, 2008 at 9:59 AM, palparni <palparni@gmail.com> wrote:
>>
>> Hi,
>>
>> I'm not sure if this info is already present on the mailing list.
>> I'd like to know if it is possible to determine at the linking phase
>> whether
>> a function has been referred to through function pointer.
>> If it is, could you give me some ideas on how to do this. I'd need to use
>> this in the emulation file of a microcontroller.
> 
> Well , the information is present in the ELF symtab if you are using
> ELF as your object file format
> 
> The assignment to the function pointer of a function will create a
> data relocation for the function at either the data section where the
> initialization happens or in the code section if the function pointer
> is set up in a function inside code. So all you do when you do the
> final relocs is to see if the DEF of this symbol refers to a function
> or an object. The information whether the symbol is a function or an
> object is IIRC in the symbol type in the elf symbol table.
> 
> 
> cheers
> Ramana
> 
> 
> 
> 
>> Thanks,
>> Alpar
>> --
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>> Sent from the Sourceware - binutils list mailing list archive at
>> Nabble.com.
>>
>>
> 
> 
> 
> -- 
> Ramana Radhakrishnan
> 
> 

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