// It returns nil if GOARCH is not recognized.
func Set(GOARCH string, shared bool) *Arch {
	switch GOARCH {
	case "386":
		return archX86(&x86.Link386)
	case "amd64":
		return archX86(&x86.Linkamd64)
	case "arm":
		return archArm()
	case "arm64":
		return archArm64()
	case "loong64":
		return archLoong64(&loong64.Linkloong64)
	case "mips":

	Assemble:       span6,
	Progedit:       progedit,
	SEH:            populateSeh,
	UnaryDst:       unaryDst,
	DWARFRegisters: AMD64DWARFRegisters,
}

var Link386 = obj.LinkArch{
	Arch:           sys.Arch386,
	Init:           instinit,
	Preprocess:     preprocess,
	Assemble:       span6,
	Progedit:       progedit,
	UnaryDst:       unaryDst,
	DWARFRegisters: X86DWARFRegisters,