Split usermem package to help remove syserror dependency in go_marshal.
New hostarch package contains code not dependent on syserror.
PiperOrigin-RevId: 365651233
- Rewrite arch.Stack.{Push,Pop}. For the most part, stack now
implements marshal.CopyContext and can be used as the target of
marshal operations. Stack.Push had some extra logic for
automatically null-terminating slices. This was only used for two
specific types of slices, and is now handled explicitly.
- Delete usermem.CopyObject{In,Out}.
- Replace most remaining uses of the encoding/binary package with
go-marshal. Most of these were using the binary package to compute
the size of a struct, which go-marshal can directly replace. ~3 uses
of the binary package remain. These aren't reasonably replaceable by
go-marshal: for example one use is to construct the syscall
trampoline for systrap.
- Fill out remaining convenience wrappers in the primitive package.
PiperOrigin-RevId: 334502375
CopyContext is a better name for the interface because from
go-marshal's perspective, the interface has nothing to do with a
task. A kernel.Task happens to implement the interface, but so can
other things like MemoryManager and IO sequences.
PiperOrigin-RevId: 331959678
Rahat Mahmood
Zach Koopmans
Ridwan Sharif