I'm reading some runtime of code of golang(go1.6.2 linux/amd64), Could someone help me to understand the underlying mechanism of getg() function in runtime/stubs.go file?
// getg returns the pointer to the current g.
// The compiler rewrites calls to this function into instructions
// that fetch the g directly (from TLS or from the dedicated register).
func getg() *g
how do the getg() function operate here? What is the body of this function?