[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Simulavr-devel] [bug #32592] simulavr trace get stuck while printing br
From: |
anonymous |
Subject: |
[Simulavr-devel] [bug #32592] simulavr trace get stuck while printing branching instructions |
Date: |
Fri, 25 Feb 2011 02:01:27 +0000 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.13) Gecko/20101206 Ubuntu/10.10 (maverick) Firefox/3.6.13 |
URL:
<http://savannah.nongnu.org/bugs/?32592>
Summary: simulavr trace get stuck while printing branching
instructions
Project: Simulavr: an AVR simulator
Submitted by: None
Submitted on: Fri 25 Feb 2011 02:01:26 AM UTC
Category: Simulation
Severity: 3 - Normal
Item Group: None
Status: None
Privacy: Public
Assigned to: None
Originator Email: address@hidden
Open/Closed: Open
Discussion Lock: Any
Component Version: simulavr
_______________________________________________________
Details:
Hi,
I started using simulavr today, and after a successful bootstrap, configure
and make, I started to try the simulator for a project I'm working with
Arduino code.
I found the trace option extremely useful for debugging interrupt-driven tasks
in the AVR uC, but it was not working ok. Some times, when it reached a branch
instruction (BRBC and the like), the trace output stopped, and a new trace
file was created a few seconds later. However, that new file suffered from the
same problems, i.e. it was unexpectedly terminated right before a branch
instruction. (I was able to find this comparing the trace output and the
compiler's output)
The test suit passed all ok, so I found a problem in the trace code in
decoder_trace.cpp. While decoding the BRBC and BRBS instructions, the names
are located in arrays using the "bitmask" variable as an index. However, the
"bitmask" variable is set by a bit shift in decoder.cpp, and is not a suitable
index for the array.
I wrote a macro that fixes that, but I'm sure you might find a better,
optimized solution. I'm attaching a diff of the original and modified files.
I hope this helps you in the development of this wonderful tool!
Thanks,
Patricio
PS: I also added an #include in avrerror.cpp to make it compile, and appears
on the same diff.
_______________________________________________________
File Attachments:
-------------------------------------------------------
Date: Fri 25 Feb 2011 02:01:26 AM UTC Name: decode_trace.patch Size: 3kB
By: None
<http://savannah.nongnu.org/bugs/download.php?file_id=22778>
_______________________________________________________
Reply to this item at:
<http://savannah.nongnu.org/bugs/?32592>
_______________________________________________
Message sent via/by Savannah
http://savannah.nongnu.org/
- [Simulavr-devel] [bug #32592] simulavr trace get stuck while printing branching instructions,
anonymous <=