ROUND1x(BX, CX, DX, BP, AX, 19)

	ROUND2(AX, BX, CX, DX, BP, 20)
	ROUND2(BP, AX, BX, CX, DX, 21)
	ROUND2(DX, BP, AX, BX, CX, 22)
	ROUND2(CX, DX, BP, AX, BX, 23)
	ROUND2(BX, CX, DX, BP, AX, 24)
	ROUND2(AX, BX, CX, DX, BP, 25)
	ROUND2(BP, AX, BX, CX, DX, 26)
	ROUND2(DX, BP, AX, BX, CX, 27)
	ROUND2(CX, DX, BP, AX, BX, 28)
	ROUND2(BX, CX, DX, BP, AX, 29)
	ROUND2(AX, BX, CX, DX, BP, 30)
	ROUND2(BP, AX, BX, CX, DX, 31)

	}

	*(*uint32)(unsafe.Pointer(&i1)) = ^uint32(1)
	if i == i1 {
		throw("float32nan2")
	}
	if i == i1 {
		throw("float32nan3")
	}

	testAtomic64()

	if fixedStack != round2(fixedStack) {
		throw("FixedStack is not power-of-2")
	}

	if !checkASM() {
		throw("assembly checks failed")
	}
}

type dbgVar struct {
	name   string

		adjustframe(&u.frame, &adjinfo)
	}

	// free old stack
	if stackPoisonCopy != 0 {
		fillstack(old, 0xfc)
	}
	stackfree(old)
}

// round x up to a power of 2.
func round2(x int32) int32 {
	s := uint(0)
	for 1<<s < x {
		s++
	}
	return 1 << s
}

// Called from runtime·morestack when more stack is needed.
// Allocate larger stack and relocate to new stack.