STP (R23, R24), 184(RSP)
	STP (R25, R26), 200(RSP)
	MOVD NZCV, R0
	MOVD R0, 216(RSP)
	MOVD FPSR, R0
	MOVD R0, 224(RSP)
	FSTPD (F0, F1), 232(RSP)
	FSTPD (F2, F3), 248(RSP)
	FSTPD (F4, F5), 264(RSP)
	FSTPD (F6, F7), 280(RSP)
	FSTPD (F8, F9), 296(RSP)
	FSTPD (F10, F11), 312(RSP)
	FSTPD (F12, F13), 328(RSP)
	FSTPD (F14, F15), 344(RSP)
	FSTPD (F16, F17), 360(RSP)
	FSTPD (F18, F19), 376(RSP)

	MOV X28, 184(X2)
	MOV X29, 192(X2)
	MOV X30, 200(X2)
	MOVD F0, 208(X2)
	MOVD F1, 216(X2)
	MOVD F2, 224(X2)
	MOVD F3, 232(X2)
	MOVD F4, 240(X2)
	MOVD F5, 248(X2)
	MOVD F6, 256(X2)
	MOVD F7, 264(X2)
	MOVD F8, 272(X2)
	MOVD F9, 280(X2)
	MOVD F10, 288(X2)
	MOVD F11, 296(X2)
	MOVD F12, 304(X2)
	MOVD F13, 312(X2)
	MOVD F14, 320(X2)
	MOVD F15, 328(X2)
	MOVD F16, 336(X2)
	MOVD F17, 344(X2)

	MOVD R25, 200(R1)
	MOVD R26, 208(R1)
	MOVD R27, 216(R1)
	MOVD R28, 224(R1)
	MOVD R29, 232(R1)
	MOVW CR, R31
	MOVW R31, 240(R1)
	MOVD XER, R31
	MOVD R31, 248(R1)
	FMOVD F0, 256(R1)
	FMOVD F1, 264(R1)
	FMOVD F2, 272(R1)
	FMOVD F3, 280(R1)
	FMOVD F4, 288(R1)
	FMOVD F5, 296(R1)
	FMOVD F6, 304(R1)
	FMOVD F7, 312(R1)
	FMOVD F8, 320(R1)
	FMOVD F9, 328(R1)
	FMOVD F10, 336(R1)
	FMOVD F11, 344(R1)

	digit, bitshift := uint(exp+61)/64, uint(exp+61)%64
	z0 := (mPi4[digit] << bitshift) | (mPi4[digit+1] >> (64 - bitshift))
	z1 := (mPi4[digit+1] << bitshift) | (mPi4[digit+2] >> (64 - bitshift))
	z2 := (mPi4[digit+2] << bitshift) | (mPi4[digit+3] >> (64 - bitshift))
	// Multiply mantissa by the digits and extract the upper two digits (hi, lo).
	z2hi, _ := bits.Mul64(z2, ix)
	z1hi, z1lo := bits.Mul64(z1, ix)

	MOVV R1, 208(R29)
	MOVV LO, R1
	MOVV R1, 216(R29)
	#ifndef GOMIPS64_softfloat
	MOVV FCR31, R1
	MOVV R1, 224(R29)
	MOVD F0, 232(R29)
	MOVD F1, 240(R29)
	MOVD F2, 248(R29)
	MOVD F3, 256(R29)
	MOVD F4, 264(R29)
	MOVD F5, 272(R29)
	MOVD F6, 280(R29)
	MOVD F7, 288(R29)
	MOVD F8, 296(R29)
	MOVD F9, 304(R29)
	MOVD F10, 312(R29)
	MOVD F11, 320(R29)
	MOVD F12, 328(R29)
	MOVD F13, 336(R29)
	MOVD F14, 344(R29)

	MOVV R27, 184(R3)
	MOVV R28, 192(R3)
	MOVV R29, 200(R3)
	MOVV R31, 208(R3)
	MOVD F0, 216(R3)
	MOVD F1, 224(R3)
	MOVD F2, 232(R3)
	MOVD F3, 240(R3)
	MOVD F4, 248(R3)
	MOVD F5, 256(R3)
	MOVD F6, 264(R3)
	MOVD F7, 272(R3)
	MOVD F8, 280(R3)
	MOVD F9, 288(R3)
	MOVD F10, 296(R3)
	MOVD F11, 304(R3)
	MOVD F12, 312(R3)
	MOVD F13, 320(R3)
	MOVD F14, 328(R3)
	MOVD F15, 336(R3)
	MOVD F16, 344(R3)

   * interpreted as a normal bit, and all other bits are treated as usual.
   *
   * <p>If the argument is nonnegative, the returned result will be equal to {@code bits},
   * otherwise, the result will be equal to {@code 2^64 + bits}.
   *
   * <p>To represent decimal constants less than {@code 2^63}, consider {@link #valueOf(long)}
   * instead.
   *
   * @since 14.0
   */
  public static UnsignedLong fromLongBits(long bits) {

   * interpreted as a normal bit, and all other bits are treated as usual.
   *
   * <p>If the argument is nonnegative, the returned result will be equal to {@code bits},
   * otherwise, the result will be equal to {@code 2^64 + bits}.
   *
   * <p>To represent decimal constants less than {@code 2^63}, consider {@link #valueOf(long)}
   * instead.
   *
   * @since 14.0
   */
  public static UnsignedLong fromLongBits(long bits) {

	FMOVD	F14, 192(R1)
	FMOVD	F15, 200(R1)
	FMOVD	F16, 208(R1)
	FMOVD	F17, 216(R1)
	FMOVD	F18, 224(R1)
	FMOVD	F19, 232(R1)
	FMOVD	F20, 240(R1)
	FMOVD	F21, 248(R1)
	FMOVD	F22, 256(R1)
	FMOVD	F23, 264(R1)
	FMOVD	F24, 272(R1)
	FMOVD	F25, 280(R1)
	FMOVD	F26, 288(R1)
	FMOVD	F27, 296(R1)
	FMOVD	F28, 304(R1)
	FMOVD	F29, 312(R1)
	FMOVD	F30, 320(R1)
	FMOVD	F31, 328(R1)

	// Synchronous initialization.

//go:linkname fastrand64 runtime.fastrand64
func fastrand64() uint64

func TestLegacyFastrand(t *testing.T) {
	// Testing mainly that the calls work at all,
	// but check that all three don't return the same number (1 in 2^64 chance)
	{
		x, y, z := fastrand(), fastrand(), fastrand()
		if x == y && y == z {
			t.Fatalf("fastrand three times = %#x, %#x, %#x, want different numbers", x, y, z)
		}
	}
	{