XXX: The decision whether or not to fast forward should be made
XXX: dynamically. Using the current approach seriously reduces
XXX: routing performance on gateways with IPsec enabled.
o Add support for the recent SiS96x chipsets that have a new revision.
That includes a new bit of code to access the EEPROM, since it is
shared with the ieee1394 controller on those chipsets.
Mostly taken from FreeBSD (rev. 1.62 and 1.64 of sys/pci/if_sip.c). I
tried to make the code look less ugly, but couldn't invent documentation.
Fix PR #23481. Thanks to Stephane ENGEL <sengel AT melshake DOT com> for
the report and the cheerful testing.
so that a specific emulation has the oportunity to filter out some signals.
if sigfilter returns 0, then no signal is sent by kpsignal2().
There is another place where signals can be generated: trapsignal. Since this
function is already an emulation hook, no call to the sigfilter hook was
introduced in trapsignal.
This is needed to emulate the softsignal feature in COMPAT_DARWIN (signals
sent as Mach exception messages)
In the interrupt dispatch loop, make sure to handle any pending interrupts
which came in while we were dealing with the first interrupt(s), and which
are enabled at the current spl.
This fixes a problem where the intr_enabled/hw mask is not updated to
allow pending interrupts through until the next splx(). In some case,
interrupts could be delayed until the next clock tick.
Exceptions coming from a trap are generated from darwin_trapsignal()
softsignals are from darwin_sigfilter(), a function that is called
from darwin_trapsignal() and from kpsignal2() [the latter from a
emulation specific hook which is not yet committed]
Make some sanity checks to avoid sending data to a port with no receiver.
See http://mail-index.netbsd.org/tech-kern/2003/12/01/0008.html and
follow-ups for details.
which came in while we were dealing with the first interrupt(s), and which
are enabled at the current spl.
This fixes a problem where the intr_enabled/hw mask is not updated to
allow pending interrupts through until the next splx(). In some case,
interrupts could be delayed until the next clock tick.
assert IDEDMA_CTL_INTR for non-DMA commands.
It would be nice to have a way to know if the interrupt was for us or not at
this point, but for now let wdcintr() deal with it.
Problem reported and patch tested by Martti Kuparinen.
ffs_isblock:
check if a block is available
returns true if all the correponding bits in the free map are 1
returns false if any corresponding bit in the free map is 0
ffs_isfreeblock:
check if a block is completely allocated
returns true if all the corresponding bits in the free map are 0
returns false if any corresponding bit in the free map is 1
called from userspace, and that messes things up.
Thanks to Mark Kettenis to pointing out that not using an alt stack
solved the "loop on gdb sig continuation" issue.
> - condition-codes should be set from (unmodified) srclen vs. dstlen
> instead from the modified (register-) values after completion.
>
> - for MOVTUC the V-bit should be set if the esc-char was found.
>
> - the arguments for comparison should be reversed.
>
> - count is unsigned word, but for condition-codes the comparison
> should be done with signed words (ie. N = srclen LSS dstlen)
