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???
06/02/07 08:33
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 		 #140188 - That's exactly the problem!
Responding to: ???'s previous message
Erik Malund said:
... a good ICE will "debug in C"

Jan Waclawek said:
... the ICE does not debug in C ... What we see, is debugging in asm, plus a tool mapping the breakpoints, statements, etc., in a very primitive and straighforward way into the C source (or .lst or whatever).

Yes, that is exactly the problem: the ICE (and any other debugger I've seen) actually works at the machine instruction level, and then tries to map that back to 'C' source statements. The trouble is that this mapping is very crude, and breaks with even the simplest optimisations.

This is what the toolmakers really need to work on: a mapping that can relate highly-optimised machine code back to its original source.

As I suggested earlier, this will (probably) need a high degree of cooperation between the code-generation toolmakers and the debug toolmakers; eg, the code-generation tools are going to have to provide significantly enhaced debug information to enable the debug tools to make sense of their optimised output!

List of 80 messages in thread
TopicAuthorDate
What\'s more important optimisations or debugging?            01/01/70 00:00      
   as Ive said before,you have two versions            01/01/70 00:00      
      Fly what you debug; Debug what you fly            01/01/70 00:00      
         Yes and No            01/01/70 00:00      
            and no...            01/01/70 00:00      
               You can not see what is not there            01/01/70 00:00      
                  Yes, that's the challenge            01/01/70 00:00      
               incorrct            01/01/70 00:00      
                  read the whole post            01/01/70 00:00      
                     comments            01/01/70 00:00      
                        I said: Ideally            01/01/70 00:00      
                           That's exactly the problem!            01/01/70 00:00      
                  Correct - but maybe mis-stated            01/01/70 00:00      
                     still not the same            01/01/70 00:00      
                        it would require some modifications elsewhere            01/01/70 00:00      
                           the catch            01/01/70 00:00      
                              sure            01/01/70 00:00      
      Buggy compilers.            01/01/70 00:00      
         not the most common reason            01/01/70 00:00      
            Probability.            01/01/70 00:00      
   Avoid problems            01/01/70 00:00      
   debugger not useful            01/01/70 00:00      
      'debuggers' ....            01/01/70 00:00      
         Re: Bullshit            01/01/70 00:00      
            why are you so determined on using ONE method            01/01/70 00:00      
               my silabs experince            01/01/70 00:00      
                  you must have your 'experience' from a VERY early            01/01/70 00:00      
   Make it right, then make it fast            01/01/70 00:00      
   Optimization misapplied - editorial            01/01/70 00:00      
      what is the difference...            01/01/70 00:00      
         this is the difference            01/01/70 00:00      
            I see, thanks.            01/01/70 00:00      
               with compiler optimizing ...            01/01/70 00:00      
   profile            01/01/70 00:00      
      So he should be able to sort it to give us BOTH!            01/01/70 00:00      
         on further analysis            01/01/70 00:00      
            PIG?            01/01/70 00:00      
               I got used to that misspell ....            01/01/70 00:00      
                  OT: PIC assembly language            01/01/70 00:00      
                     errata            01/01/70 00:00      
                        which you often can not get by with            01/01/70 00:00      
                           Takes the sting out            01/01/70 00:00      
                        PIC assembler is fun!            01/01/70 00:00      
                           well it does make more clones of me            01/01/70 00:00      
                           matter of personal preference, I think            01/01/70 00:00      
                              HT 8051 C too            01/01/70 00:00      
                                 Did you miss...            01/01/70 00:00      
         No hidden agenda            01/01/70 00:00      
            make it "Keil compatible"            01/01/70 00:00      
            "omniscient code generation"            01/01/70 00:00      
               OCG looks interesting            01/01/70 00:00      
               omniscient code generation            01/01/70 00:00      
                  Recursive Calls            01/01/70 00:00      
                     need recursive calls? use a chip that can take it            01/01/70 00:00      
                        RE: Recursive Calls            01/01/70 00:00      
                     RE: Recursive Calls            01/01/70 00:00      
                  Ryan, as I said above...            01/01/70 00:00      
                     optimization 1) and 2)            01/01/70 00:00      
                        procedural abstraction?            01/01/70 00:00      
                           debugging tools            01/01/70 00:00      
                              support for other tools and our own tool offering            01/01/70 00:00      
                                 tools etc.            01/01/70 00:00      
                                    beta testers?            01/01/70 00:00      
                                       advertisement?            01/01/70 00:00      
                                       Link is fine            01/01/70 00:00      
                                          silabs?            01/01/70 00:00      
                                             chips            01/01/70 00:00      
                                                Future direction            01/01/70 00:00      
                                                   do not forget the 'economy ones'            01/01/70 00:00      
                                                      "economy" ICE...            01/01/70 00:00      
                                                         SILabs does not belong            01/01/70 00:00      
                                                            ICE cathegorisation (C) Erik            01/01/70 00:00      
                              my guess            01/01/70 00:00      
                                 the big shots...            01/01/70 00:00      
                           please elaborate            01/01/70 00:00      
                              Debugging challenges            01/01/70 00:00      
   It depends on what you want            01/01/70 00:00      
   Realy What is Important, is there any paradox            01/01/70 00:00      
   AVR or C51 ,PLease Choose ?!!            01/01/70 00:00      
   Embedded System or your noodle Code            01/01/70 00:00      

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