26b6d0b06d
Specification: https://developer.arm.com/documentation/dui0472/k/C-and-C---Implementation-Details/Basic-data-types-in-ARM-C-and-C-- There are multiple types that have an 8-byte alignment (long long, double) so we need to use the same maximum alignment in TinyGo. Fixing this is necessary for the precise GC.
39 строки
807 Б
Go
39 строки
807 Б
Go
//go:build cortexm
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package runtime
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import (
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"device/arm"
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)
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const GOARCH = "arm"
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// The bitness of the CPU (e.g. 8, 32, 64).
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const TargetBits = 32
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const deferExtraRegs = 0
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// Align on word boundary.
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func align(ptr uintptr) uintptr {
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return (ptr + 7) &^ 7
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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 uintptr
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//go:linkname procPin sync/atomic.runtime_procPin
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func procPin() {
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procPinnedMask = arm.DisableInterrupts()
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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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arm.EnableInterrupts(procPinnedMask)
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}
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