package sigframe

import "gvisor.dev/gvisor/pkg/sigframe"

Package sigframe implements a mechanism to create a signal frame on the stack and execute a user-defined callback function within that context. The callback function can use the `sigreturn` system call to resuming the current thread with the state from the signal frame. This functionality can be helpful in scenarios where you need to simulate a signal handler-like behavior without triggering a signal.

Index ¶

• func CallWithSignalFrame(signalStack *linux.SignalStack, handlerAddr uintptr, sigmask *linux.SignalSet, rax uint64) error
• func Sigreturn(sigframeAddr *arch.UContext64)

Functions ¶

func CallWithSignalFrame ¶

func CallWithSignalFrame(signalStack *linux.SignalStack, handlerAddr uintptr, sigmask *linux.SignalSet, rax uint64) error

CallWithSignalFrame sets up a signal frame on the stack and executes a user-defined callback function within that context.

Caller-save registers can be used for passing arguments to the handler. These registers must be pre-set within the signal frame.

func Sigreturn ¶

func Sigreturn(sigframeAddr *arch.UContext64)

Sigreturn restores the thread state from the signal frame.

Source Files ¶

sigframe.go sigframe_amd64_unsafe.go