4.115
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Last change
on this file since dff1803 was
dff1803,
checked in by Daniel Hellstrom <daniel@…>, on 12/03/14 at 10:35:52
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SPARC: optimize IRQ enable & disable
- Coding style cleanups.
- Use OS reserved trap 0x89 for IRQ Disable
- Use OS reserved trap 0x8A for IRQ Enable
- Add to SPARC CPU supplement documentation
This will result in faster Disable/Enable? code since the
system trap handler does not need to decode which function
the user wants. Besides the IRQ disable/enabled can now
be inline which avoids the caller to take into account that
o0-o7+g1-g4 registers are destroyed by trap handler.
It was also possible to reduce the interrupt trap handler by
five instructions due to this.
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