The RISC-V calling convention specifies that when a C function takes an
argument by value, the binary function should take the argument by
reference, if the value is larger than 2 pointer words.
For binary verification, we avoid implementing this aspect of the RISC-V
calling convention, by eliminating all such function arguments for
functions which are not inlined.
In this commit, we remove the `slot_range_t` structure altogether. For
the small number of functions which previously used this type, we unpack
the structure into three separate arguments.
Even though we are primarily concerned with RISC-V, we remove
`slot_range_t` arguments across all architectures.
Signed-off-by: Matthew Brecknell <Matthew.Brecknell@data61.csiro.au>
The RISC-V calling convention specifies that when a C function takes an
argument by value, the binary function should take the argument by
reference, if the value is larger than 2 pointer words.
For binary verification, we avoid implementing this aspect of the RISC-V
calling convention, by eliminating all such function arguments for
functions which are not inlined.
In this commit, we remove `extra_caps_t` function arguments. This
primarily concerns invocation decode functions. Since `loookupExtraCaps`
already stores extra caps in a global `current_extra_caps`, this
essentially amounts to eliminating many redundant structure copy
operations.
On some execution paths involving IPC, the extra caps lookup may happen
twice: first in the invocation decode, and then for cap transfer in the
performance phase of the IPC operation. Because the two phases are
entirely distinct, there is no interference in the use of a common
global variable.
Even though we are primarily concerned with RISC-V, we remove
`extra_caps_t` arguments across all architectures.
Signed-off-by: Matthew Brecknell <Matthew.Brecknell@data61.csiro.au>
All the kernel header files now use pargma once rather than the ifndef,
as the pre-processed C files do not change while header files
are protected with pargma once. This will also solve any naming issues
caused by ifndef.
This commit also converts our own copyright headers to directly use
SPDX, but leaves all other copyright header intact, only adding the
SPDX ident. As far as possible this commit also merges multiple
Data61 copyright statements/headers into one for consistency.
Removes the recycle operation and adds an operation
to cancel any badged sends on and endpoint. Calling
Revoke + CancelBadgedSend is equivalent to Recycle
on a badged endpoint
