mirror of
https://github.com/tinygo-org/tinygo.git
synced 2026-08-04 19:17:47 +00:00
Ayke van Laethem
9af535bf98
You can see that it works with the following command:
tinygo run -target=simavr ./testdata/recover.go
This also gets the following tests to pass again:
go test -run=Build -target=simavr -v
Adding support for AVR was a bit more compliated because it's also
necessary to save and restore the Y register.
40 lines
933 B
Go
40 lines
933 B
Go
//go:build avr
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// +build avr
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package runtime
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import "runtime/interrupt"
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const GOARCH = "arm" // avr pretends to be arm
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// The bitness of the CPU (e.g. 8, 32, 64).
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const TargetBits = 8
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const deferExtraRegs = 1 // the frame pointer (Y register) also needs to be stored
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// Align on a word boundary.
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func align(ptr uintptr) uintptr {
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// No alignment necessary on the AVR.
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return ptr
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}
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func getCurrentStackPointer() uintptr {
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return uintptr(stacksave())
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}
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// The safest thing to do here would just be to disable interrupts for
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// procPin/procUnpin. Note that a global variable is safe in this case, as any
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// access to procPinnedMask will happen with interrupts disabled.
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var procPinnedMask interrupt.State
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//go:linkname procPin sync/atomic.runtime_procPin
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func procPin() {
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procPinnedMask = interrupt.Disable()
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}
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//go:linkname procUnpin sync/atomic.runtime_procUnpin
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func procUnpin() {
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interrupt.Restore(procPinnedMask)
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}
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