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>
Highlights:
- new reserved IRQ and associated handler: VPPIEvent
- VPPI events are virtual interrupts we can forward to VMs; currently there is
only one event: virtual timer interrupt
- VGICMaintenance and VPPIEvent can both receive late interrupts from hardware,
which are now discarded instead of being delivered to current thread
- given only one possible VPPI event, simplifier tends to mop up more than it
should, making some proofs fragile w.r.t. adding a new VPPI event
- the order of some lemmas/specs needed shuffling, as now VCPU code needs some
interrupt code, which uses VCPU code
message_info structs have 20 bit labels. On 32-bit systems, the label
does not need to be masked as there are no extra padding bits in the
struct, but this is not true for 64-bit systems. As a result, the
haskell needs to mask msgLabelBits (=20) when extracting the label in
messageInfoFromWord.
Gerwin Klein
Rafal Kolanski
Victor Phan
Mitchell Buckley
Joel Beeren
Miki Tanaka