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Parallella Community • View topic - Reference doc question

Reference doc question

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

Moderator: aolofsson

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Re: Reference doc question

Postby sebraa » Tue Jan 24, 2017 4:27 pm

Are you following the original ABI (from the SDK documentation), the new ABI (with the new images), or do you have your own?
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Re: Reference doc question

Postby upcFrost » Wed Jan 25, 2017 5:00 pm

Current LLVM backend for Epiphany: . Commits and code reviews are welcome
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Re: Reference doc question

Postby sebraa » Wed Jan 25, 2017 6:47 pm

For the new ABI, see and . Apart from that, good luck and my best wishes with your project. ;-)
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Re: Reference doc question

Postby upcFrost » Thu Jan 26, 2017 10:15 am

Current LLVM backend for Epiphany: . Commits and code reviews are welcome
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Re: Reference doc question

Postby upcFrost » Wed Feb 22, 2017 3:54 pm

Current LLVM backend for Epiphany: . Commits and code reviews are welcome
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Re: Reference doc question

Postby jar » Thu Feb 23, 2017 6:38 am

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Re: Reference doc question

Postby sebraa » Fri Feb 24, 2017 5:18 pm

All assembly instructions follow the scheme of "instruction destination, source". So it is "MOVTS config, r16" (because it copies from r16 to config) and "MOVFS r16, config" (because it copies from config to r16).

The switchable instruction set is one of the more annoying ISA decisions in the Epiphany, because it interacts badly with interrupts. If you require ISRs to never change (or always restore) the whole config register, you could skip the gid/gie dance in normal code.
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Re: Reference doc question

Postby olajep » Fri Feb 24, 2017 6:36 pm

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Re: Reference doc question

Postby upcFrost » Mon Mar 13, 2017 12:34 pm

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