-
Notifications
You must be signed in to change notification settings - Fork 190
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Add support for
wasm32-wasip1 and wasm32-wasip2, remove support f…
…or `wasm32-wasi`
- Loading branch information
Showing
7 changed files
with
96 additions
and
27 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,9 +1,48 @@ | ||
| //! Implementation for WASI | ||
| //! Implementation for WASI (preview 1 and 2) | ||
| //! | ||
| //! `target_env = "p1"` was introduced only in Rust 1.80, so on earlier compiler versions this | ||
| //! code will result in a compilation error. | ||
| use crate::Error; | ||
| use core::mem::MaybeUninit; | ||
| use wasi::random_get; | ||
|
|
||
| #[cfg(not(any(target_env = "p1", target_env = "p2")))] | ||
| compile_error!( | ||
| "Unknown version of WASI (only previews 1 and 2 are supported) \ | ||
| or Rust version older than 1.80 was used" | ||
| ); | ||
|
|
||
| #[cfg(target_env = "p1")] | ||
| pub fn getrandom_inner(dest: &mut [MaybeUninit<u8>]) -> Result<(), Error> { | ||
| unsafe { random_get(dest.as_mut_ptr().cast::<u8>(), dest.len()) } | ||
| unsafe { wasi::random_get(dest.as_mut_ptr().cast::<u8>(), dest.len()) } | ||
| .map_err(|e| Error::from_os_error(e.raw().into())) | ||
| } | ||
|
|
||
| #[cfg(target_env = "p2")] | ||
| pub fn getrandom_inner(dest: &mut [MaybeUninit<u8>]) -> Result<(), Error> { | ||
| use core::ptr::copy_nonoverlapping; | ||
| use wasi::random::random::get_random_u64; | ||
|
|
||
| let (prefix, chunks, suffix) = unsafe { dest.align_to_mut::<MaybeUninit<u64>>() }; | ||
|
|
||
| if !prefix.is_empty() { | ||
| let val = get_random_u64(); | ||
| let src = (&val as *const u64).cast(); | ||
| unsafe { | ||
| copy_nonoverlapping(src, prefix.as_mut_ptr(), prefix.len()); | ||
| } | ||
| } | ||
|
|
||
| for dst in chunks { | ||
| dst.write(get_random_u64()); | ||
| } | ||
|
|
||
| if !suffix.is_empty() { | ||
| let val = get_random_u64(); | ||
| let src = (&val as *const u64).cast(); | ||
| unsafe { | ||
| copy_nonoverlapping(src, suffix.as_mut_ptr(), suffix.len()); | ||
| } | ||
| } | ||
|
|
||
| Ok(()) | ||
| } |