TLBSYNC                         // 7c00046c
	HRFID                           // 4c000224
	SLBIA                           // 7c0003e4
	SLBIE R3                        // 7c001b64
	SLBMFEE R3, R4                  // 7c801f26
	SLBMFEV R3, R4                  // 7c801ea6
	SLBMTE R3, R4                   // 7c801b24

	TW $31, R0, R0                  // 7fe00008
	TD $31, R0, R0                  // 7fe00088

	os.Setenv("GOPROXY", "off")

	// Use a build cache separate from the default user one.
	// Also one that will be wiped out during startup, so that
	// make.bash really does start from a clean slate.
	oldgocache = os.Getenv("GOCACHE")
	os.Setenv("GOCACHE", pathf("%s/pkg/obj/go-build", goroot))

	// Disable GOEXPERIMENT when building toolchain1 and
	// go_bootstrap. We don't need any experiments for the