77ec9b6369
Do it all at once in preparation for Go 1.18 support. To make this commit, I've simply modified the `fmt-check` Makefile target to rewrite files instead of listing the differences. So this is a fully mechanical change, it should not have introduced any errors.
32 строки
980 Б
Go
32 строки
980 Б
Go
//go:build xtensa
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// +build xtensa
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package interrupt
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import "device"
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// State represents the previous global interrupt state.
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type State uintptr
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// Disable disables all interrupts and returns the previous interrupt state. It
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// can be used in a critical section like this:
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//
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// state := interrupt.Disable()
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// // critical section
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// interrupt.Restore(state)
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//
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// Critical sections can be nested. Make sure to call Restore in the same order
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// as you called Disable (this happens naturally with the pattern above).
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func Disable() (state State) {
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return State(device.AsmFull("rsil {}, 15", nil))
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}
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// Restore restores interrupts to what they were before. Give the previous state
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// returned by Disable as a parameter. If interrupts were disabled before
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// calling Disable, this will not re-enable interrupts, allowing for nested
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// cricital sections.
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func Restore(state State) {
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device.AsmFull("wsr {state}, PS", map[string]interface{}{
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"state": state,
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})
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}
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