Only set the physical address if the entry is mapped.

Otherwise, even when the address was 0, we would possibly set the
physical address to != 0 as we always applied the page offset.

Fix wrong address mask (page directory vs. page table).

Fix index range for ARM MMU coarse page tables.

As there are only 8 bits for the index in the coarse page table entries
the maximum index is 256. This makes us correctly move to the next page
directory once we've run through all entries. Fixes missing unmap of
pages that crossed that boundary and consequent panic "page still has
mappings" when the page was removed from a cache.

ARM: Cleanup of port support code.

This also implements the fault handler correctly now, and cleans up the
exception handling. Seems a lot more stable now, no unexpected panics or
faults happening anymore.

ARM: mark pages found in query as present

* Quiet down VM debug output, so we can easily find errors ;)

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40927 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged the signals branch into trunk, with these changes:
* The team and thread kernel structures have been renamed to Team and Thread
respectively and moved into the new BKernel namespace.
* Several (kernel add-on) sources have been converted from C to C++ since
private kernel headers are included that are no longer C compatible.

Changes after merging:
* Fixed gcc 2 build (warnings mainly in the scary firewire bus manager).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40196 a95241bf-73f2-0310-859d-f6bbb57e9c96

s/Copyirght/Copyright/ unless it's a neologism from Ithamar :-)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39235 a95241bf-73f2-0310-859d-f6bbb57e9c96

* ARM: Major VM work
- This is mostly a copy of the x86 32bit paging method and infrastructure, this was copied for two reasons:
1) It is the most complete VM arch
2) The first ARM PAE patches have landed on alkml, so we will have to deal with it in the future as well,
and this infrastructure has proven to be ready ;)
- No protection features, or dirty/accessed tracking yet
- Lots of #if 0

but....

It boots all the way up to init_modules() now, and then dies because of a lack of (ARM) ELF relocation implementation!

Since at this point the VM can be fully initialised, I'm going to focus on CPU exceptions next, so we can get KDL to trigger
when it happens, and I can actually debug from there ;)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39206 a95241bf-73f2-0310-859d-f6bbb57e9c96

ARM: Cleanup of port support code.

This also implements the fault handler correctly now, and cleans up the
exception handling. Seems a lot more stable now, no unexpected panics or
faults happening anymore.

ARM: mark pages found in query as present

* Quiet down VM debug output, so we can easily find errors ;)

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40927 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged the signals branch into trunk, with these changes:
* The team and thread kernel structures have been renamed to Team and Thread
respectively and moved into the new BKernel namespace.
* Several (kernel add-on) sources have been converted from C to C++ since
private kernel headers are included that are no longer C compatible.

Changes after merging:
* Fixed gcc 2 build (warnings mainly in the scary firewire bus manager).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40196 a95241bf-73f2-0310-859d-f6bbb57e9c96

s/Copyirght/Copyright/ unless it's a neologism from Ithamar :-)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39235 a95241bf-73f2-0310-859d-f6bbb57e9c96

* ARM: Major VM work
- This is mostly a copy of the x86 32bit paging method and infrastructure, this was copied for two reasons:
1) It is the most complete VM arch
2) The first ARM PAE patches have landed on alkml, so we will have to deal with it in the future as well,
and this infrastructure has proven to be ready ;)
- No protection features, or dirty/accessed tracking yet
- Lots of #if 0

but....

It boots all the way up to init_modules() now, and then dies because of a lack of (ARM) ELF relocation implementation!

Since at this point the VM can be fully initialised, I'm going to focus on CPU exceptions next, so we can get KDL to trigger
when it happens, and I can actually debug from there ;)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39206 a95241bf-73f2-0310-859d-f6bbb57e9c96