In Isabelle2020, when isabelle jedit is started without a session
context, e.g. `isabelle jedit -l ASpec`, theory imports with path
references cause the isabelle process to hang.
Since sessions now declare directories, Isabelle can find those files
without path reference and we therefore remove all such path references
from import statements. With this, `jedit` and `build` should work with
and without explicit session context as before.
Signed-off-by: Gerwin Klein <gerwin.klein@data61.csiro.au>
While the numerical value is arch dependent, the definition and symbolic value
are not. This commit factors out the symbolic computation and only unfolds the
numeric value in the architecture dependent spec.
Strictly speaking vmrights might at some point become architecture dependent,
but all present architectures have precisely the same implementation, and there
are no plans to do anything different in the foreseeable future.
The previous implementation of IOPortCaps has problems with revocability
and determining parency etc. This commit adds IOPortControlCaps which
behave identically to IRQControlCaps -- invoking the IOPortControlCap
allows one to create IOPortCaps with the supplied range.
There now exist invariants to show that there is only one
IOPortControlCap and that all IOPortCaps in the system do not overlap.
Furthermore there is a global record of which IO ports have been
allocated to prevent reissuing the same ports.
This patch adds a generic "post_cap_deletion" step that is called by
finalise_slot. Previous to this, the only caps which had actions
required at this stage were IRQHandlerCaps -- it was required that the
IRQ bitmap be updated after the cap itself was removed (as the
invariants state that for any existing IRQHandlerCap, the corresponding
bit in the IRQ bitmap must be set).
By genericising this, we add the capacity for new, arch-specific post
cap deletion actions to occur in the future.
* make update_cap_data do nothing for IOPorts
* return same_aobject_as to previous definition for IOPorts
* change cap_master_cap for IOPorts to be the identity
Includes some changes to the abstract spec:
- replace magic numbers with definitions.
- add missing IOPortCap cases to some definitions.
There is one sorry proof, which I think blast could solve if we
gave it enough time. Will need a more subtle approach.
Gerwin Klein
Michael McInerney
Joel Beeren
Michael Sproul
Matthew Brecknell
Joel Beeren