[ECOS] powerpc.ld question

[Gary Thomas]

Will Wagner wrote:
> I am seeing two issues with the linker. Either I get the internal error 
> ld: internal error /src/binutils-2.17/ld/ldlang.c 3803 when trying to 
> link. Or I see that it links but when executing the image and an 
> exception is thrown the code doesn't handle it correctly. By changing a 
> few lines of code (often containing strings) I can get either of those 
> behaviours or an image that works correctly.
> 
> Could well be an issue with the gcc I am using, however ld should not 
> fail with an internal error either. Have been in touch with binutils 
> developers and they suggested to try the head version of ld.

What's your host?  I've *never* seen any of these behaviours on Linux.

> 
> My powerpc.ld file does contain .eh_frame:
> 
> #define SECTION_eh_frame(_region_, _vma_, _lma_)      \
>   .eh_frame _vma_ : _lma_                             \
>     {                                                 \
>        FORCE_OUTPUT;  __EH_FRAME_BEGIN__ = .;         \
>        KEEP(*(.eh_frame))                             \
>        __FRAME_END__ = .;                             \
>        . = . + 8;                                     \
>     } > _region_ = 0
> 
> But no mention of .eh_frame_hdr. Should I add it to that KEEP directive? 
> Wasn't sure if it should be there or in the text section.

This is not the same setup - try using the version from CVS (attached)
Note: the last time it was changed was 2003-04-10, so you must be
working with some *vintage* code :-)

> Gary Thomas wrote:
>> Will Wagner wrote:
>>> Have had issues with 2.16 & 2.17 of binutils so am now trying to get 
>>> the HEAD of CVS working.
>>
>> Just curious - what issues did you have with these previous versions?
>> I run 2.16 and 2.16.1 here (gcc 3.4.3 and 4.1.0 respectively) with
>> no problems.
>>
>> Does your powerpc.ld file not include a line which looks like this?
>>   *(.eh_frame)
>> Perhaps it needs to be written as:
>>   *(.eh_frame_hdr) *(.eh_frame)
>>
>> I'm perplexed though; I've never had a need for this.  Maybe it's in
>> your usage of GCC or how you configured it when building it.
>>
>>>
>>> Am using GCC 3.3.3
>>>
>>> Gary Thomas wrote:
>>>> Will Wagner wrote:
>>>>> I am trying to upgrade to a new version of binutils as I'm 
>>>>> experiencing problems with my current version.
>>>>>
>>>>> The new version of ld throws an error when trying to link saying 
>>>>> that the section .eh_frame_hdr is not specified.
>>>>>
>>>>> I know I need to add an entry to /hal/powerpc/src/powerpc.ld, but 
>>>>> I'm not sure where this needs to go. The only other .ld file I 
>>>>> could find that referenced eh_frame_hdr is sh4_202_md.ld but that 
>>>>> file is so different I didn't find it very useful.
>>>>>
>>>>
>>>> What version of binutils (and GCC) are you using?
>>>>
>>>
>>
>>
> 


-- 
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Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
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