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Re: [tcf-dev] Find Symbol by Name, Address, Scope
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Hi Stefan,
What compiler are you using for your 8051 ?
Does this compiler generates dwarf debug informations ?
To know that, try objdump -h or readelf on the generated file.
If you can have a compiler for your 8051 that generates Dwarf
information, nearly all the job is done because TCF handles Dwarf debug
information format.
> I don't really understand either how a name should be enough since
there could be thousands of "int i;" declarations spread over a program.
With no further information (like scope or PC location) this task seems
impossible to me.
Download a Dwarf specification : http://www.dwarfstd.org/doc/Dwarf3.pdf
You'll see the debug_infos is a kind of tree defining variables,
function, scopes and will provide rules on how to compute a variable
location, variable type.
If your compiler does not generate dwarf information, it should generate
similar datas.
Either you adapt the TCF code for these proprietatry datas or you write
a converter that will generate Dwarf informations.
Hope it helps,
Best Regards,
Xavier.
On 06/13/2014 02:24 PM, Stefan.Falk@xxxxxxxxxxxx wrote:
Hi folks!
Since setting breakpoints and displaying register contents are already working, the next step would be to load and display the values of symbols/variables.
I see - from symbols_win32.c - that there are several functions that are dedicated to that task. I was now wondering what the best way would be to implement that for my i8051.
What I already have is a complete information structure of my program containing details like
- Modules, holding
o Global variables
o Functions
- Functions, holding
o Start, end address
o Local variables
- Variables, holding
o Location address (RAM, Register)
o Scope information (in C code)
- Memory Areas, holding
o Modules (for faster program counter mapping)
So all that is missing is to integrate that into the agent.
What would the best way to do that? As I have e.g. the exact scope information of a variable it would be fastest and easiest if Eclipse would sent me file:line:scope. I debugged it and what I saw was that either find_by_name or find_by_address was called.
Is find_by_address only called if find_by_name didn't succeed?
I don't really understand either how a name should be enough since there could be thousands of "int i;" declarations spread over a program. With no further information (like scope or PC location) this task seems impossible to me.
So is there a way to get more information from Eclipse like the scope of the symbol?
Thanks and best regards!
--
Stefan Falk
Infineon Technologies Austria AG
Trainee
Automotive Sense and Control
Component Verification
Tel: +43 (0)5 / 1777 - 5439
Email: stefan.falk@xxxxxxxxxxxx<mailto:stefan.falk@xxxxxxxxxxxx>
"Aim above the mark to hit the mark." - Ralph Waldo Emerson
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