Lpc2000

fredvermejo wrote:

>Hi! Everybody!
>
>I\ufffdm using GNUARM 4.0.1 and when I run my code step by step (using
>Insight, OCDRemote and a parallel wiggler), the steps showed at
>Insight window don\ufffdt follow a logical sequence, the mark jumps to
>lines (down and up) although the program works fine.
>There is something wrong with my parameters to generate the code???
>I already have used -O0 and -O2 and the result is the same.
>Somebody have experienced something like that?
>
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Yes, but when I located _all_ the -O2 or -Os optimization compiler flags 
and changed them to -O0, everything worked as expected.  You have to 
remember that the ARM code uses conditional execution instructions.  
These opcodes conditionally will execute based on a condition flag 
(Zero, Carry, no Carry, etc).  While debugging this type of code, you 
will have counter-intuitive behavior.

Try turning on a mixed source + assembly view in the debugger and take a 
hard look at the underlying code.

TomW

>Thanks in advance.
>Fred
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>Yahoo! Groups Links
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-- 
Tom Walsh - WN3L - Embedded Systems Consultant
http://openhardware.net, http://cyberiansoftware.com
"Windows? No thanks, I have work to do..."
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