The upstream one assumes it's running on a Unix system (which makes
sense), but this package is also used on baremetal. So replace it on
systems that need a replaced syscall package.
We can't use the bytes package in Go 1.24 since it would result in an
import cycle. Therefore, use bytealg.Index instead.
(I'm not sure this code is correct - just searching for a range of bytes
seems brittle. But at least this commit shouldn't change the code).
older behavior for wasi modules to not return an exit code as if they were reactors.
See #4726 for some details on what this is intended to address.
Signed-off-by: deadprogram <ron@hybridgroup.com>
This ensures:
1. The xorshift state is initialized during interp.
2. The xorshift state gets initialized to a real random number on
hardware that supports it at runtime.
This fixes a big binary size regression from the previous commit. It's
still not perfect: most programs increase binary size by a few bytes.
But it's not nearly as bad as before.
The mutex implementation needs a different implementation once support
for threading lands. This implementation just moves code to the
internal/task package to centralize these algorithms.
The latest golang.org/x/net websocket package v0.33.0 needs
Dialer.DailContext in crypto/tls. This PR adds it.
Apps using golang.org/x/net are encouraged to use v0.33.0 to address:
CVE-2024-45338: Non-linear parsing of case-insensitive content in golang.org/x/net/html
CVE-2023-45288: net/http, x/net/http2: close connections when receiving too many headers
Tested with examples/net/websocket/dial.
* initial implementation for Tillitis TKey device
* add UART implementation for TKey
* add Pin interface implementation for TKey touch sensor
* add RNG interface implementation for TKey
* add helpful machine package functions to return identifiers such as name and version for TKey
* use built-in timer for sleep timing on TKey
* modify UART implementation for TKey to implement Serialer interface
* implement BLAKE2s ROM function call for TKey device
* handle abort by triggering TKey device fault using illegal instruction to halt CPU
* simplify TKey implementation by inheriting from existing riscv32 target
* return error for trying to configure invalid baudrates on UART
* add tkey to builder test
* be very specific for features passed to LLVM for specific config in use for TKey
* handle feedback items from TKey device code review
Signed-off-by: deadprogram <ron@hybridgroup.com>
This actually simplifies the code and avoids a heap allocation in the
call to Wait. Instead, it uses the Data field of the task to store
information on whether a task was signalled early.
See the code comments for details. But in short, this implements a futex
for the cooperative scheduler (that is single threaded and
non-reentrant). Similar implementations can be made for basically every
other operating system, and even WebAssembly with the threading
(actually: atomics) proposal.
Using this basic futex implementation means we can use the same
implementation for synchronisation primitives on cooperative and
multicore systems.
For more information on futex across operating systems:
https://outerproduct.net/futex-dictionary.html
Ayke van Laethem
deadprogram
soypat
leongross
m00874241
HattoriHanzo031
Yurii Soldak
milkpirate
vaaski
Scott Feldman
Roman Grudzinski
Volodymyr Pobochii
Elliott Sales de Andrade
Thomas Legris