[U-Boot] Adding Debug Symbol To U-Boot

[Łukasz Majewski]

On 07/12/2017 12:42 PM, yyurtcan wrote:
> Hi,
> I have p4080ds and lauterbach(T32) hardware debugger. As known, u-boot has
> written both assembly and C language. I can debug all u-boot code in
> assembly language(C code also converted to assembly). However, it is hard to
> follow. How can I debug u-boot C code in C language(not assembly)? What I
> mean is that at the beginning there is assembly part after that whole code
> is C language. I want to debug C code in C language not assembly language.
> Here is my script that is enable debugging u-boot in assembly language.(I
> have already load u-boot to Nor Flash). If it is not possible, I want to add
> debug symbols to assembly code for linking C code. To do that what are the
> requirement to rebuild uboot?

With T32 please pay attention to:

1. If the code is after or before relocation - u-boot relocates itself, 
so the location of debugging symbols varies.

2. The C code before relocation is rather tiny, so for 99% you would 
like to debug the "after" relocation part.

TO do that - please type 'bdinfo" and look into relocation offset.

This value should be added to T32's command to load symbols:

data.load.elf <elf with debugging symbols> <offset> /nocode



>
> --------Script Start -------------------
> SYStem.Reset
> SYStem.CPU P4080
> CORE.ASSIGN 1
> MAP.BOnchip 0xFFFFF000--0xFFFFFFFF
> SYStem.UP
> Data.dump 0xFFFFF000--0xFFFFFFFF
> --------Script End-------------------
>
> Best regards.
>
>
>
>
> --
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-- 
Best regards,

Lukasz Majewski

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