* Try and assign directly to return registers; backtrack to use struct-return param
Rather than trying to count number of return registers that would be used by a
given set of return values, optimistically assign the return values to
registers. If we later find that we can't fit them all in registers, then
backtrack and introduce the use of a struct-return pointer parameter.
* Rename `rets2` and wrap it in an option so we avoid the clone for non-multi-value
In some cases, compute_size() is used to choose between various different Encodings
before one has been assigned to an instruction. For x86, the REX.W bit is stored
in the Encoding. To share recipes between REX/non-REX, that bit must be inspected
by compute_size().
This commit fixes a subtle bug in `fd_readdir` implementation on
BSD-style nixes. In particular, the bug only resurfaced when testing in
release mode, and I can only assume it was due to a unlucky combination
of compiler optimizations and at first sight correct casting of `d_name`
pointer from `const* i8` to `const* u8`. This is now fixed by first
converting `d_name` to `std::str` by using `std::ffi::CStr::to_str`, and
then using the resultant `std::str` to copy the properly validated `u8`
contents into the Wasm buffer.
Furthermore, this commit fixes incorrect handling of the `readdir` loop
break condition. Although undocumented in BSD man pages, the signalling
is the same as on Linux where a null ptr returned by `readdir` signals
the end of the dir stream when the errno code has not changed since
before calling `readdir` inside a loop. Upon a fault such as an invalid
file descriptor, the errno *will* change after executing `readdir`.
* Update the top-level README.md and embedding documentation.
wasmtime-api is now the primary external API crate, so recommend that
instead of wasmtime-jit.
Also, enable wasmtime-api's C API by default, so that it shows up on
docs.rs, and to make it easier to use.
And, add basic embedding documentation and link to it from the
README.md. Credit to @yurydelendik for the content.
* Use the new wasm-c-api URL.
* Don't pass --features wasm-c-api, as it is now on by default.
This commit fixes the build errors in the unwind info implementation for
the x86 ABI by changing `byteorder` to build `no_std`.
This copies two simple functions from the `WriteBytesExt` trait so that
we can easily write to a `Vec<u8>` with a particular endianness.
Fixes#1203.
This commit simplifies the build script slightly for generating tests by
doing a few dull refactorings:
* Leaves formatting to `rustfmt`
* Extract bulk of code execution into a top-level shared `run_wast`
function so each test is a one-liner
* Use `anyhow` for errors both in the script and in tests
Some wasi-common tests assume that stdin is never ready to be read, but
on CI stdin is closed so it's always ready to be read. Work around this
by guaranteeing that wasi-common tests always have an unreadable stdin
pipe by creating our own pipe.
This commit switches the beta/nightly tests to happen on Ubuntu instead
of macOS. Turns out GitHub Actions has scheduling limitations on macOS
that limit repositories to 5 concurrent jobs per repository, so let's
reduce the load a bit by running more builds on Linux than mac.
We needed a workaround when using wabt on old Linux distros due to using
old versions of `strtof`. With the switch to `wat`, we no longer need
these workarounds.
This commit merges [CraneStation/wasi-common] repo as a subdir of
this repo while preserving **all** of git history. There is an
initiative to pull `wasi-common` into [CraneStation/wasmtime], and
[CraneStation/wasmtime] becoming a monorepo. This came about for
several reasons with a common theme of convenience, namely,
having a monorepo:
1. cleans up the problem of dependencies (as we have seen first
hand with dependabot enabled, it can cause some grief)
2. completely removes the problem of syncing the closely dependent
repos (e.g., updating `wasi-common` with say a bugfix generally
implies creating a "sync" commit for pulling in the changes into
the "parent" repo, in this case, `wasmtime`)
3. mainly for the two reasons above, makes publishing to crates.io
easier
4. hopefully streamlines the process of getting the community
involved in contributing to `wasi-common` as now everything
is one place
[CraneStation/wasi-common]: https://github.com/CraneStation/wasi-common
[CraneStation/wasmtime]: https://github.com/CraneStation/wasmtime
* Initial checkin.
* Update to rust-lang libc.
* Add a .gitignore file.
* Factor out functions for cleaning up files and directories.
* Fix a typo in a comment.
* Print a "Success!" message if all tests passed.
* Factor out code for creating directories.
* Add wrappers around WASI functions.
These wrappers handle converting from &str to pointer+length and handle
unsafe.
* More refactoring.
* Refactor a fd_close helper.
* Move utility functions into a separate file.
* cargo update
* Add a basic test for random_get.
* Test that directories aren't resizable.
* Test clearing __WASI_RIGHT_PATH_FILESTAT_SET_SIZE.
Ensure that clearing __WASI_RIGHT_PATH_FILESTAT_SET_SIZE succeeds before
testing file truncation.
* cargo update
* Modularise tests for easier use with wasi-common crate
* Add a Code of Conduct and CONTRIBUTING.md.
* Fix typo
* Add testcase for fd_allocate
* Add positive test for fd_renumber
* Assert bufused in readlink_no_buffer testcase
* Add positive readlink testcase
* Add testcase for fd_seek and fd_tell
* Add fd_p{read, write} test
* Add README
* Add cases with trailing slashes to interesting_paths
* Split nofollow_errors testcase into two
* nofollow_errors now operators on symlinks to existing resources
* dangling_symlink covers danling symlinks tests
* Factor out a `create_file` helper function.
* Switch from the error crate to `std::io::Error::last_os_error()`.
* Use `create_file` in the readlink test too.
* Add a test for fd_filestat_set_*
* Minor refactoring
Add missing cleanup_file calls to file_pread_pwrite and
file_seek_tell.
* Add testcase for unbuffered fd_write; fixes#11
* Add testcase for path_rename
* Use the wasi crate.
Switch from depending on libc to depending on the new wasi crate to provide
the low-level WASI interfaces.
See also https://github.com/rust-lang/libc/pull/1461.
* Add a test for path_filestat_*
* Add a test for fd_readdir
* Use expect instead of unwrap
* Add a check for ino.
* Fix the build
* Don't assume a specific order of dirents
* Better test
* Test cookie value
* Fix file types
* Fix the test
* Fix the test
* Fix the test
* Cleanup
* Minor formatting tidying in README.md.
* Fix miscellaneous clippy warnings.
* Rename the crate to wasi-misc-tests.
* Update to wasi 0.7.0.
This switches from using the libc wasi bindings to using the wasi
crate's bindings. This eliminates a git dependency on libc, updates
to the new-style bindings which use Result where possible, and treats
functions that operate on raw file descriptors as unsafe.
* Add various tests for trailing-slash behavior.
* Sync new testcases with latest upstream
* Fix path_filestat testcase
* Add smoke test for fd_advise
This test is a true smoke test as it only tests whether issuing
an advise call to the host's kernel doesn't yield an error. The
consequence of issuing such a syscall is not tested.
* Check if CLOCK_MONOTONIC is actually monotonic
* Refactor the inequality assertions for more debuggable errors.
* Bump libc from 0.2.62 to 0.2.65
Bumps [libc](https://github.com/rust-lang/libc) from 0.2.62 to 0.2.65.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Commits](https://github.com/rust-lang/libc/compare/0.2.62...0.2.65)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
* Fix compilation error
* Enable Actions and add rust.yml (#35)
* Enable Actions and add rust.yml
This commit enables Github Actions and adds corresponding configuration in rust.yml file.
* Update rust.yml
* Fix formatting
* Add empty .rustfmt.toml config file
* Add badge to README
* Update README
* Clean up Github Actions and README
* Add test case for `poll_oneoff` syscall (#38)
* Add test case for `poll_oneoff` syscall
This commit adds a test case for `poll_oneoff` syscall. In particular,
it builds on the excellent test use case provided by @dunnock in their
repo [poll_oneoff_tests] (thanks!), and tests:
* simple timeout
* stdin read with timeout
* fd read and fd write polls
[poll_oneoff_tests]: https://github.com/dunnock/poll_oneoff_tests
* Apply suggestions and negative test for bad fd
Co-authored-by: Maxim Vorobjov <maxim.vorobjov@gmail.com>
* Add smoke test for STDOUT/ERR readwrite poll
* Add comment on stdin/out/err
* Add a test for `*at`-style functions returning `ENOTDIR` when `dirfd` is not a dir.
* Remove misc_testsuite submodule
* Add "publish=false" to Cargo.toml; remove LICENSE
* fix Linux `isatty` implementation
* defer `WasiCtxBuilder` errors to `build()`; don't change API yet
This changes the fields on the builder to types that let the various `.arg()`, `.env()`, etc methods
infallible, so we don't have to worry about handling any errors till we actually build. This reduces
line noise when using a builder in a downstream application.
Deferring the processing of the builder fields also has the advantage of eliminating the opening and
closing of `/dev/null` for the default stdio file descriptors unless they're actually used by the
resulting `WasiCtx`.
Unicode errors when inheriting arguments and environment variables no longer cause a panic, but
instead go through `OsString`. We return `ENOTCAPABLE` at the end if there are NULs, or if UTF-8
conversion fails on Windows.
This also changes the bounds on some of the methods from `AsRef<str>` to `AsRef<[u8]>`. This
shouldn't break any existing code, but allows more flexibility when providing arguments. Depending
on the outcome of https://github.com/WebAssembly/WASI/issues/8 we may eventually want to require
these bytes be UTF-8, so we might want to revisit this later.
Finally, this fixes a tiny bug that could arise if we had exactly the maximum number of file
descriptors when populating the preopens.
* make `WasiCtxBuilder` method types less restrictive
This is a separate commit, since it changes the interface that downstream clients have to use, and
therefore requires a different commit of `wasmtime` for testing. That `wasmtime` commit is currently
on my private fork, so this will need to be amended before merging.
Now that failures are deferred until `WasiCtxBuilder::build()`, we don't need to have `Result` types
on the other methods any longer.
Additionally, using `IntoIterator` rather than `Iterator` as the trait bound for these methods is
slightly more general, and saves the client some typing.
* enforce that arguments and environment variables are valid UTF-8
* remove now-unnecessary platform-specific OsString handling
* `ENOTCAPABLE` -> `EILSEQ` for failed arg/env string conversions
* fix up comment style
* Apply @acfoltzer's fix to isatty on Linux to BSD
* Reimpleent fd_readdir on Linux using quasi-nix.
* Implement fd_readdir on Windows.
* wip
* Adapt to upstream changes.
* Cleanup dir.rs
* Address review
* Fix macos build
* host -> wasi
* Partially address review, more to come later.
* Address more review comments
* Fix compilation on Windows
This commit implements registering unwind information for JIT functions on
Windows so that the operating system can both walk and unwind stacks containing
JIT frames.
Currently this only works with Cranelift as lightbeam does not emit unwind
information yet.
This commit also resets the stack guard page on Windows for stack overflow
exceptions, allowing reliable stack overflow traps.
With these changes, all previously disabled test suite tests (not including
the multi-value tests) on Windows are now passing.
Fixes#291.
