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https://github.com/taigrr/gopher-os
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5fc6ce188e
All calls (but one) to kernel.Panic have been replaced by calls to panic. A call to kernel.Panic is still required to prevent the compiler from treating kernel.Panic as dead code and eliminating it.
42 lines
1.0 KiB
Go
42 lines
1.0 KiB
Go
package kernel
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import (
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"github.com/achilleasa/gopher-os/kernel/cpu"
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"github.com/achilleasa/gopher-os/kernel/kfmt/early"
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)
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var (
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// cpuHaltFn is mocked by tests and is automatically inlined by the compiler.
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cpuHaltFn = cpu.Halt
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errRuntimePanic = &Error{Module: "rt", Message: "unknown cause"}
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)
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// Panic outputs the supplied error (if not nil) to the console and halts the
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// CPU. Calls to Panic never return. Panic also works as a redirection target
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// for calls to panic() (resolved via runtime.gopanic)
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//go:redirect-from runtime.gopanic
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func Panic(e interface{}) {
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var err *Error
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switch t := e.(type) {
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case *Error:
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err = t
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case string:
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errRuntimePanic.Message = t
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err = errRuntimePanic
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case error:
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errRuntimePanic.Message = t.Error()
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err = errRuntimePanic
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}
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early.Printf("\n-----------------------------------\n")
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if err != nil {
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early.Printf("[%s] unrecoverable error: %s\n", err.Module, err.Message)
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}
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early.Printf("*** kernel panic: system halted ***")
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early.Printf("\n-----------------------------------\n")
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cpuHaltFn()
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}
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