GCC produces almost exactly the same instructions as the hand-assembled
versions, albeit in a different order. It even found one place where it
could shave one off. Its insistence on creating a stack frame might slow
things down marginally, but not, I think, enough to matter.
children to attach; it is not sufficient to have an interface
atttribute which only happens to have the same name.
Fix the same mistake with the sabtty declaration.
add rd, pc, #foo - . - 8 -> adr rd, foo
ldr rd, [pc, #foo - . - 8] -> ldr rd, foo
Also, when saving the return address for a function pointer call, use
"mov lr, pc" just before the call unless the return address is somewhere
other than just after the call site.
Finally, a few obvious little micro-optimisations like using LDR directly
rather than ADR followed by LDR, and loading directly into PC rather than
bouncing via R0.
- Allocate interrupt handles dynamically from a pool(9) to reduce the
number of TLB misses during interrupt dispatch.
- Fully support evcnt(9) in all interrupt dispatchers.
in question, whereas the ARM code was using it to hold the model
identification. To fix this, rename:
ci_cpuid -> ci_arm_cpuid
ci_cputype -> ci_arm_cputype (for consistency)
ci_cpurev -> ci_arm_cpurev (ditto)
ci_cpunum -> ci_cpuid
This makes top(1) give correct CPU numbers in its "STATE" column (all 0 for
now).
joins other machdep files)
Saves maintaining multiple copies of the same thing, the only differences
were:
IRQ line used on the footbridge (made that a define in include/isa_machdep.h)
name of a dma_ranges variable contained arch name, so just made it generic.
Define an attribute for each crypto algorithm, and use that attribute
to select the files that implement the algorithm.
* Give the "wlan" attribute a dependency on the "arc4" attribute.
* Give the "cgd" pseudo-device the "des", "blowfish", "cast128", and
"rijndael" attributes.
* Use the new attribute-as-option-dependencies feature of config(8) to
give the IPSEC_ESP option dependencies on the "des", "blowfish", "cast128",
and "rijndael" attributes.
"evictions" and avoide calling pmap_pte_spill if there are no evictions
for the current pmap. Make the ISI execption use the default exception
code. Remove lots of dead stuff from trap_subr.
Make olink use TAILQ instead of LIST and be sorted with evicted entries
first and resident entries last. Make use of this knowledge to make
pmap_pte_spill do a fast exit.
0x13 Function 0) after a read error. This is a requirement mentioned
in most BIOS documentation.
This answers PR 18591.
Incidentally, on the Soekris Engineering net45x1 single-board
computer, this fixes a bug where the bootloader corrupts the kernel
while loading it from certain varieties of CompactFlash card
(especially varieties identified by NetBSD as <TOSHIBA THNCF064MBA>).
When the read value is 0, reset the timer (don't wait till the next loop round to reset it)
Add a bit of debug to the calibration stuff to make sure its working ok.
- Use the PVO_CACHEABLE flag in the pvo as the One True Indicator of
the cacheable status of a mapping instead of peeking at the PTEH.
- Don't inline some of the larger routines, in an effort to appease
the somewhat buggy compiler.
- Fix some comments.
- Fix some casts.
- Add a bunch more debugging instrumentation.
- Move usr, sr, pc, and the branch-target registers to the top of
the listing so that it is no longer necessary to scroll through
64 integer registers to see them.
This argument has been previously unused, thus undetected due to void*
typing. Mmm, copy & paste. Note that sparc got it right though.
Many thanks to Valeriy E. Ushakov <uwe@netbsd.org> for debugging support.
kernel right now, a sleep lock around the entire thing would have
worked as well, but hey.
Also correct PCB_USER_LDT to PMF_USER_LDT. This was wrong but since
they had the same value, it didn't matter.
