Hi Dan,
Hi - I'm trying to use gas 2.15 on PA-RISC, and I want to issue an ldcws instruction like:
ldcws,co 0(%r20), %r19
which is accepted by the HP assembler, but gas barfs with:
Error: Invalid Short Load/Store Completer.
gas apparently doesn't like the cache control hint completor, which is critical for semaphore performance on PA-RISC. I've tried every reasonable combination of characters for the completer that I can think of, and nothing seems to work.
I passed this question and your proposed patch onto the HPPA binutils port maintainer. This is what he had to say about it:
: One problem is you are mixing PA 1.x and 2.0 assembler semantics. : The co completer is a PA 2.0 feature. PA 1.x processors don't : support this completer. The PA 2.0 semantics is ldcw,co. I guess : the HP assembler accepts ldcws as a synonym for ldcw when generating : PA 2.0 code.
: I suspect that if Dan changes ldcws to ldcw and specifies .level : correctly, the assembler will accept the co completer.
I hope that this helps.
Cheers Nick
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