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Parallella Community • View topic - Hardware loop end address

Hardware loop end address

Any technical questions about the Epiphany chip and Parallella HW Platform.

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Hardware loop end address

Postby upcFrost » Thu Mar 22, 2018 9:29 am

Current LLVM backend for Epiphany: . Commits and code reviews are welcome
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Re: Hardware loop end address

Postby jar » Fri Mar 23, 2018 4:08 pm

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Re: Hardware loop end address

Postby olajep » Wed Apr 04, 2018 1:41 pm

There's a test for exactly this in the simulator testsuite:
https://github.com/adapteva/epiphany-bi ... /hwloops.s

Did you try to run your program with e-run --trace, alternatively passing 'sim trace' to e-gdb?

Unfortunately it looks like the instruction the $le register points to is not executed when stepping through the program with 'stepi', or setting a breakpoint at it.
But note that the breakpoint is hit, although gdb reports the wrong address.
Not sure if this is easy to fix, seems we need to tell GDB that the instruction at $LE was in fact a branch instruction, dynamically. Hope I'm wrong otherwise ugh!

// Ola
_start = 266470723;
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Re: Hardware loop end address

Postby upcFrost » Wed May 02, 2018 8:21 pm

Current LLVM backend for Epiphany: . Commits and code reviews are welcome
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