* Use generated type bindings.
Use the witx API descriptions to generate the bulk of the contents of
host.rs, wasi.rs, and wasi32.rs.
This also prunes out many of the miscellaneous libc definitions from
those files which aren't currently in use by wasi-common. If there's
anything removed that's still needed by someone, it's easy to add things
back in.
* Remove unneeded iovec conversion routines.
* Reorganize host.rs and wasm32.rs.
Reorganize host.rs and wasm32.rs into host.rs, wasi.rs, and wasi32.rs.
Most of the contents of host.rs was not actually host-specific, as most
of the types are fixed-size types like u32 or i64. These types are now
in wasi.rs.
The few types which do have pointer or usize-sized values now remain,
in two versions: host.rs has versions which use actual raw pointers and
usize, and wasi32.rs has versions which use u32 to represent them.
* Fix compilation on BSD
* Fix compilation on Windows
* Fully encapsulate endianness in memory.rs.
This refactors memory.rs to fully encapsulte endianness concerns, so
that outside that file, all values are in host-endian order.
This adds a dependency on the `num` crate, though it's only used for
the `PrimInt` trait, for handling endianness in a generic way.
* Use pub(crate).
* Open /dev/null for writing as well as reading.
Port this fix to wasi-common:
b905c44483
* Remove all remaining uses of `std::mem::uninitialized`.
Patch inspired by:
2d6519d051
* Replace libc::memcpy() calls with std::ptr::copy_nonoverlapping()
Port this fix to wasi-common:
a3f3a33e9b
* Pass `WasiError` by value.
It's a `u16` underneath, so we can pass it by value.
* Avoid unnecessary explicit lifetime parameters.
* Use immutable references rather than mutable references.
Patch inspired by:
54baa4c38c
Internal modules `memory` and `host` can indeed be internal hidden
behind public-private visibility as `wasmtime-wasi` has already
been updated not to use the said modules (see
CraneStation/wasmtime#298).
Make `dec_slice_of` return a slice rather than a pointer-length pair,
freeing its users from having to call the unsafe `slice::from_raw_parts`.
This requires splitting `dec_slice_of` and `dec_ptr` into mut and
non-mut versions, and reorganizing poll_oneoff a little to avoid
borrow-checker errors -- decoded slices do alias the main memory, so
make sure functions only need one or the other.
The upstream wasi/core.h header switched from anonymous unions to unions
named `u`. This patch updates wasm32.rs to reflect this, as was done in
wasmtime 5b77f952.
