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Move cmath into `sys`
Part of #117276.
r? ``@ChrisDenton``
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xous: misc fixes + add network support
This patchset makes several fixes to Xous support. Additionally, this patch adds networking support.
Many of these fixes are the result of the recent patch to get `unwinding` support merged. As a result of this patch, we can now run rust tests. As a result of these tests, we now have 729 tests passing:
```
failures:
env::tests::test
env::tests::test_self_exe_path
env::tests::vars_debug
env::tests::vars_os_debug
os::raw::tests::same
path::tests::test_push
path::tests::test_set_file_name
time::tests::since_epoch
test result: FAILED. 729 passed; 8 failed; 1 ignored; 0 measured; 0 filtered out; finished in 214.54s
```
In the course of fixing several tests and getting the test sequence to reliably run, several issues were found. This patchset fixes those issues.
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The thread wrapper function never returns, so we can mark it as
divergent.
Signed-off-by: Sean Cross <sean@xobs.io>
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Use constants for the opcodes when writing to stdout or stderr.
There still is no stdin operation.
Signed-off-by: Sean Cross <sean@xobs.io>
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Ensure these structs have a well-defined ABI layout.
Signed-off-by: Sean Cross <sean@xobs.io>
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This is an initial commit of network support for Xous.
On hardware, is backed by smoltcp running via a Xous server in a
separate process space.
This patch adds TCP and UDP client and server support as well as DNS
resolution support using the dns Xous server.
Signed-off-by: Sean Cross <sean@xobs.io>
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When using the testing framework, a second copy of libstd is built and
linked. Use a global symbol for the `DLMALLOC` variable and mark it as
`extern` when building as a test.
This ensures we only have a single allocator even when running tests.
Signed-off-by: Sean Cross <sean@xobs.io>
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When running tests, libstd gets implemented as a second library. Due to
this fact, the `create()` and `destroy()` functions come from different
libraries.
To work around this, stash the `destroy_tls()` pointer in the first
unused slot in the thread local storage pool. That way even if
the destruction comes from a different version of libstd, the correct
`DTORS` list will be consulted.
Signed-off-by: Sean Cross <sean@xobs.io>
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Use the global queue implementation of Once when running on Xous. This
gets us a thread-safe implementation, rather than using the
non-threadsafe `unsupported` implementation.
Signed-off-by: Sean Cross <sean@xobs.io>
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Add more checks to RwLock on Xous. As part of this, ensure the variable
is in a good state when unlocking.
Additionally, use the global `yield_now()` rather than platform-specific
`do_yield()`.
Signed-off-by: Sean Cross <sean@xobs.io>
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Use blocking scalars when unlocking a mutex. This ensures that mutexes
are unlocked immediately rather than dangling.
Signed-off-by: Sean Cross <sean@xobs.io>
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Rework the Condvar implementation on Xous to ensure notifications are
not missed. This involves keeping track of how many times a Condvar
timed out and synchronizing based on that.
Signed-off-by: Sean Cross <sean@xobs.io>
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Fix a deadlock condition that can occur when a thread is awoken in
between the point at which it checks its wake state and the point where
it actually waits.
This change will cause the waker to continuously send Notify messages
until it actually wakes up the target thread.
Signed-off-by: Sean Cross <sean@xobs.io>
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