Only i16x8 and i32x4 are encoded in this commit mainly because i8x16 and i64x2 do not have simple encodings in x86. i64x2 is not required by the SIMD spec and there is discussion (https://github.com/WebAssembly/simd/pull/98#issuecomment-530092217) about removing i8x16.
The x86 ISA has (at least) two encodings for PEXTRW:
1. in the SSE2 opcode (66 0f c5) the XMM operand uses r/m and the GPR operand uses reg
2. in the SSE4.1 opcode (66 0f 3a 15) the XMM operand uses reg and the GPR operand uses r/m
This changes the 16-bit x86_pextr encoding from 1 to 2 to match the other PEXTR* implementations (all #2 style).
* Begin sketching out a new high-level `fs` API.
This is a very preliminary sketch of #83. It doesn't even compile yet,
but it shows a possible high-level structure of such an API.
* Stub out more functionality.
* Switch from a lazy_static WasiCtx to a borrowed one.
* Reformat some comments.
* Code-quote `Self`.
* Implement error translation for Windows.
* Calls to `fd_close` are now unsafe.
* Implement a few more functions.
* 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
With 92a19e9398 the optimisation levels of cranelift were renamed, without this change trying to use the -o flag on wasmtime runtime results in "error: Unexpected value for a setting, expected any among none, speed, speed_and_size".
"best" was renamed "speed_and_size", although I think "speed" is more adapted to wastime.
Bye,
JB.
Add documentation to the icmp instruction text for both signed and
unsigned overflow, making it very clear why unsigned overflow is
complicated and where to find it.
This commit implements populating the table imports of a module from the API.
It also allows for `anyref` in table types as per the reference types proposal.
This PR fixes the borrow scope of store in the `WrappedCallable` impl of
`WasmTimeFn` such that it does not remain borrowed across the call to
`wasmtime_call_trampoline`. By limiting the scope of the borrow, the
implementation can be reentered if an exported function calls an imported
function, which in turn calls another exported function.
Fixes#365.
The fix contains an errno remapping in macOS case where in case
when we try to rename a file into a path with a trailing slash an
ENOENT is returned. In this case, if the destination does not exist,
an ENOTDIR should be thrown as is thrown correctly on Linux hosts.
Thus, as a fix, if an ENOENT is thrown, an additional check is
performed to see whether the destination path indeed contains
a trailing slash, and if so, the errno is adjusted to ENOTDIR
to match the POSIX/WASI spec.
