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Signed-off-by: deadprogram <[email protected]>
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Signed-off-by: deadprogram <[email protected]>
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machine/rp2350: add support
* add linker scripts for rp2350
* add bootloader
* begin melding rp2040 and rp2350 APIs
* add UART
* add rp2350 boot patching
* Fix RP2350 memory layout (#4626)
* Remove rp2040-style second stage bootloader.
* Add 'minimum viable' IMAGE_DEF embedded block
* Create a pico2 specific target
* Implement rp2350 init, clock, and uart support
* Merge rp2 reset code back together
* Separate chip-specific clock definitions
* Clear pad isolation bit on rp2350
* Init UART in rp2350 runtime
* Correct usb/serial initialization order
* Implement jump-to-bootloader
* test: add pico2 to smoketests
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Signed-off-by: deadprogram <[email protected]>
Co-authored-by: Matthew Mets <[email protected]>
Co-authored-by: Matt Mets <[email protected]>
Co-authored-by: deadprogram <[email protected]>
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runtime/interrupt package
Signed-off-by: deadprogram <[email protected]>
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Signed-off-by: deadprogram <[email protected]>
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* 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 <[email protected]>
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This can happen with generic functions, see:
https://github.com/tinygo-org/tinygo/issues/4486
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See https://github.com/actions/runner-images/issues/10636
Signed-off-by: deadprogram <[email protected]>
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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.
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includes the 'os' package
Signed-off-by: deadprogram <[email protected]>
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Signed-off-by: deadprogram <[email protected]>
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This prepares sync.WaitGroup for multithreading.
Code size for the cooperative scheduler is nearly unchanged.
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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
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This adds some non-atomic types that have the same interface as the ones
in sync/atomic.
We currently don't need these to be atomic (because the scheduler is
entirely cooperative), but once we add support for a scheduler with
multiple threads and/or preemptive scheduling we can trivially add some
type aliases under a different build tag in the future when real
atomicity is needed for threading.
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I don't think this is used anywhere right now, and it would need to be
updated to work with multithreading. So instead of fixing it, I think we
can remove it.
My original intention was to have something like this that could be used
in the machine package, but since this is in the runtime package (and
the runtime package imports the machine package on baremetal) it can't
actually be used that way.
I checked the TinyGo repo and the drivers repo, and `runtime.Cond` isn't
used anywhere except in that one test.
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This should hopefully make the build slightly faster.
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Previously the assembler was reordering this code:
jal tinygo_scanstack
move $a0, $sp
Into this:
jal tinygo_scanstack
nop
move $a0, $sp
So it was "helpfully" inserting a branch delay slot, even though this
was already being taken care of.
Somehow this didn't break, but it does break in the WIP threading branch
(https://github.com/tinygo-org/tinygo/pull/4559) where this bug leads to
a crash.
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This ensures that calls to print/println happening in different threads
are not interleaved. It's a task.PMutex, so this should only change
things when threading is used.
This matches the Go compiler, which does the same thing:
https://godbolt.org/z/na5KzE7en
The locks are not recursive, which means that we need to be careful to
not call `print` or `println` inside a runtime.print* implementation,
inside putchar (recursively), and inside signal handlers. Making them
recursive might be useful to do in the future, but it's not really
necessary.
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This is needed for full support for the testing package
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Signed-off-by: deadprogram <[email protected]>
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This uses uint32 instead of uint64. The reason for this is that uint64
atomic operations aren't universally available (especially on 32-bit
architectures). We could also use uintptr, but that seems needlessly
complicated: it's unlikely real-world programs will use more than a
billion select states (2^30).
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This helps to make sure this feature continues to work and we won't
accidentally introduce regressions.
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Without this fix, wasi-libc is listed as follows:
65 0 0 0 | 65 0 | C:\Users\Ayke\src\tinygo\tinygo\lib\wasi-libc\libc-bottom-half\sources
14 0 0 0 | 14 0 | C:\Users\Ayke\src\tinygo\tinygo\lib\wasi-libc\libc-top-half\musl\src\exit
1398 0 0 0 | 1398 0 | C:\Users\Ayke\src\tinygo\tinygo\lib\wasi-libc\libc-top-half\musl\src\string
1525 0 0 0 | 1525 0 | C:\Users\Ayke\src\tinygo\tinygo\lib\wasi-libc\libc-top-half\sources
With this fix, it's identified as the wasi-libc C library:
3002 0 0 0 | 3002 0 | C wasi-libc
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See bug: https://github.com/llvm/llvm-project/issues/117317
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This fixes long paths from the TinyGo cached GOROOT, as can be seen
here:
code rodata data bss | flash ram | package
------------------------------- | --------------- | -------
0 5 0 5 | 5 5 | (padding)
148 0 0 5 | 148 5 | (unknown)
76 0 0 0 | 76 0 | /home/ayke/.cache/tinygo/goroot-ce8827882be9dc201bed279a631881177ae124ea064510684a3cf4bb66436e1a/src/device/arm
4 0 0 0 | 4 0 | /home/ayke/.cache/tinygo/goroot-ce8827882be9dc201bed279a631881177ae124ea064510684a3cf4bb66436e1a/src/internal/task
They're now attributed to the correct package instead (device/arm and
internal/task).
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Fix the warning, and also remove tinygo_clang_enum_visitor which was
unused.
See: https://github.com/golang/go/issues/49721
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This addresses #4608
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This updates the version of the cmsis-svd library, to include a version
that supports rp2350. This is in support of #4452
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Make sure the object is locked when trying to modify it.
Binary size seems unaffected when not using threading.
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This uses the task.PMutex parallel-only-mutex type to make the leaking
GC parallelism safe. The task.PMutex type is currently a no-op but will
become a real mutex once we add true parallelism.
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PMutex is a mutex when threading is possible, and a dummy mutex-like
object (that doesn't do anything) otherwise.
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Use the alignment from the align attribute of the runtime.alloc call.
This is going to be a more accurate alignment, and is typically smaller
than the default.
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This requires an API introduced in MacOS 11. I think that's fine, since
the version before that (MacOS 10.15) is EOL since 2022. Though if
needed, we could certainly work around it by using an older and slightly
less nice API.
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This really is the only sane way to register a signal. If this flag is
not set, many syscalls will return EINTR (and not complete their
operation) which will be a massive source of hard-to-debug bugs.
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Signed-off-by: deadprogram <[email protected]>
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This rewrite simplifies the channel implementation considerably, with
34% less LOC. Perhaps the most important change is the removal of the
channel state, which made sense when we had only send and receive
operations but only makes things more compliated when multiple select
operations can be pending on a single channel.
I did this rewrite originally to make it possible to make channels
parallelism-safe. The current implementation is not parallelism-safe,
but it will be easy to make it so (the main additions will be a channel
lock, a global select lock, and an atomic compare-and-swap in
chanQueue.pop).
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Here is the proposal:
https://github.com/golang/go/issues/56378
They are documented here:
https://pkg.go.dev/cmd/cgo@master#hdr-Optimizing_calls_of_C_code
This would have been very useful to fix
https://github.com/tinygo-org/bluetooth/issues/176 in a nice way. That
bug is now fixed in a different way using a wrapper function, but once
this new noescape pragma gets included in TinyGo we could remove the
workaround and use `#cgo noescape` instead.
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This only works on declarations, not definitions. This is intentional:
it follows the upstream Go implemetation.
However, we might want to loosen this requirement at some point: TinyGo
sometimes stores pointers in memory mapped I/O knowing they won't
actually escape, but the compiler doesn't know about this.
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This moves all scheduler code into a separate file that is only compiled
when there's a scheduler in use (the tasks or asyncify scheduler, which
are both cooperative). The main goal of this change is to make it easier
to add a new "scheduler" based on OS threads.
It also fixes a few subtle issues with `-gc=none`:
- Gosched() panicked. This is now fixed to just return immediately
(the only logical thing to do when there's only one goroutine).
- Timers aren't supported without a scheduler, but the relevant code
was still present and would happily add a timer to the queue. It
just never ran. So now it exits with a runtime error, similar to any
blocking operation.
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Making this work on all targets was interesting but there's now a test
in place to make sure this works on all targets that have the CGo test
enabled (which is almost all targets).
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Fixes #4615
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This fixes a bug where output would not actually be written to stdout
before exiting the process, leading to a flaky Windows CI. Exiting using
`exit(0)` appears to fix this.
For some background, see: https://github.com/tinygo-org/tinygo/pull/4589
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Instead of using fake tables for errno and others, use the ones that
correspond to wasi-libc.
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* Move environment functions to their own files.
* Rewrite the WASIp2 version of environment variables to be much
simpler (don't go through C functions).
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This is needed for code like this:
#define __WASI_ERRNO_INVAL (UINT16_C(28))
#define EINVAL __WASI_ERRNO_INVAL
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