3392827c3e
This is not very useful in itself, but makes it possible to detect this address in the output. See the next commit. This adds around 50 bytes to each binary (except for AVR and wasm). This is unfortunate, but I think this feature is quite useful still. A future enhancement might be to create a build tag for extended panic information that's not set by default.
41 строка
863 Б
Go
41 строка
863 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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const callInstSize = 4 // "bl someFunction" is 4 bytes
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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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