This adds support for building with `-tags=llvm13` and switches to LLVM
13 for tinygo binaries that are statically linked against LLVM.
Some notes on this commit:
* Added `-mfloat-abi=soft` to all Cortex-M targets because otherwise
nrfx would complain that floating point was enabled on Cortex-M0.
That's not the case, but with `-mfloat-abi=soft` the `__SOFTFP__`
macro is defined which silences this warning.
See: https://reviews.llvm.org/D100372
* Changed from `--sysroot=<root>` to `-nostdlib -isystem <root>` for
musl because with Clang 13, even with `--sysroot` some system
libraries are used which we don't want.
* Changed all `-Xclang -internal-isystem -Xclang` to simply
`-isystem`, for consistency with the above change. It appears to
have the same effect.
* Moved WebAssembly function declarations to the top of the file in
task_asyncify_wasm.S because (apparently) the assembler has become
more strict.
Also fix a couple os tests that wrote to current directory to write to os.TempDir() instead.
After this, os tests pass in wasi, so add them to the list run by "make tinygo-test-wasi".
This matches what upstream Go does. This also means len(b) == 0 successfully
reads 0 bytes without any extra logic. The tests in archive/zip test for this
behaviour.
In the early days of TinyGo, the idea of `postinit` was to enable
interrupts only after initializers have run. Which kind of makes
sense... except that `time.Sleep` is allowed in init code and
`time.Sleep` requires interrupts to be enabled. Therefore, interrupts
must be enabled while initializers are being run.
This commit simply moves the enabling of interrupts to a point right
before running package initializers. It also removes `runtime.postinit`,
which is not necessary anymore (and was only used on AVR).
The STM32F469 can use the same initialization as the existing STM32F407
with a few frequency tweaks. This change splits the generic
initialization code into a separate runtime_stm32f4.go file, leaving
only the 407 board specific constants in the existing
runtime_stm32f407.go file.
Note that runtime_stm32f405.go initialization seems semantically similar
to the 407, but I don't have enough confidence in merging 405 with 407
in this change.
The only differences are a more general SPI.getBaudRate and a different
frequency limit in I2C.getFreqRange.
This is a first step towards adding stm32f469 support: a follow-up
merges machine_stm32f407.go and machine_stm32f405.go, another adds
frequency tweaks for stm32f469.
Interrupt based time. Adjust tick cost every 1 minute and when timer-0 is reconfigured (the time precision affected when timer-0 reconfigured). Keep all time in nanoseconds.
This change implements __sync atomic polyfill libcalls by disabling interrupts.
This was previously done in a limited capacity on some targets, but this change uses a go:generate to emit all of the calls on all microcontroller targets.
This bug can be triggered by the following series of events:
A acquires a write lock
B starts waiting for a read lock
C starts waiting for a read lock
A releases the write lock
After this, both B and C are supposed to be resumed as a read-lock is available.
However, with the previous implementation, only C would be resumed immediately.
Other goroutines could immediately acquire the read lock, but B would not be resumed until C released the read lock.
The extalloc collector has been broken for a while, and it doesn't seem reasonable to fix right now.
In addition, after a recent change it no longer compiles.
In the future similar functionality can hopefully be reintroduced, but for now this seems to be the most reasonable option.
This change swaps the stack chain when switching goroutines, ensuring that the chain is maintained consistently.
This is only really currently necessary with asyncify on wasm.
This fixes 2 bugs in the GC scan bounds:
1. On AVR, the GC could sometimes read one byte past the end of a block due to the difference between pointer size and alignment.
2. On WASM, the linker does not properly align the marker for the end of the globals section. A manual alignment operation has been added to markGlobals to work around this.
This change fixes the edge case where a negative sleep time is provided.
When this happens, the call now returns immediately (as specified by the docs for time.Sleep).
Add direct test for the problem to make the fix commit clearer.
Noticed while implementing MkdirTemp on mac; the upstream tests for MkdirTemp fail without this.
