SAVE_R19_TO_R28(8*4)
	SAVE_F8_TO_F15(8*14)

	// If called from an external code context, g will not be set.
	// Save R0, since runtime·load_g will clobber it.
	MOVW	R0, 8(RSP)		// signum
	BL	runtime·load_g(SB)

	// Restore signum to R0.
	MOVW	8(RSP), R0
	// R1 and R2 already contain info and ctx, respectively.
	BL	runtime·sigtrampgo<ABIInternal>(SB)

	// Restore callee-save registers.
	RESTORE_R19_TO_R28(8*4)

	SYS_FCHFLAGS             = 35  // { int|sys||fchflags(int fd, u_long flags); }
	SYS_SYNC                 = 36  // { void|sys||sync(void); }
	SYS_KILL                 = 37  // { int|sys||kill(pid_t pid, int signum); }
	SYS_GETPPID              = 39  // { pid_t|sys||getppid(void); }
	SYS_DUP                  = 41  // { int|sys||dup(int fd); }
	SYS_PIPE                 = 42  // { int|sys||pipe(void); }

	SYS_FCHFLAGS             = 35  // { int|sys||fchflags(int fd, u_long flags); }
	SYS_SYNC                 = 36  // { void|sys||sync(void); }
	SYS_KILL                 = 37  // { int|sys||kill(pid_t pid, int signum); }
	SYS_GETPPID              = 39  // { pid_t|sys||getppid(void); }
	SYS_DUP                  = 41  // { int|sys||dup(int fd); }
	SYS_PIPE                 = 42  // { int|sys||pipe(void); }

        BigIntegerMath.SQRT2_PRECOMPUTED_BITS);
  }

  public void testIsPowerOfTwo() {
    for (BigInteger x : ALL_BIGINTEGER_CANDIDATES) {
      // Checks for a single bit set.
      boolean expected = x.signum() > 0 & x.and(x.subtract(ONE)).equals(ZERO);
      assertEquals(expected, BigIntegerMath.isPowerOfTwo(x));
    }
  }

  public void testLog2ZeroAlwaysThrows() {
    for (RoundingMode mode : ALL_ROUNDING_MODES) {

};

# if !GTEST_OS_WINDOWS
// Tests that an exit code describes an exit due to termination by a
// given signal.
class GTEST_API_ KilledBySignal {
 public:
  explicit KilledBySignal(int signum);
  bool operator()(int exit_status) const;
 private:
  const int signum_;
};
# endif  // !GTEST_OS_WINDOWS

// EXPECT_DEBUG_DEATH asserts that the given statements die in debug mode.

// at least 4 kB out, in data.
func readELF(name string, f *os.File, data []byte) (buildid string, err error) {
	// Assume the note content is in the data, already read.
	// Rewrite the ELF header to set shoff and shnum to 0, so that we can pass
	// the data to elf.NewFile and it will decode the Prog list but not
	// try to read the section headers and the string table from disk.
	// That's a waste of I/O when all we care about is the Prog list

	SYS_FCHFLAGS             = 35  // { int|sys||fchflags(int fd, u_long flags); }
	SYS_SYNC                 = 36  // { void|sys||sync(void); }
	SYS_KILL                 = 37  // { int|sys||kill(pid_t pid, int signum); }
	SYS_GETPPID              = 39  // { pid_t|sys||getppid(void); }
	SYS_DUP                  = 41  // { int|sys||dup(int fd); }
	SYS_PIPE                 = 42  // { int|sys||pipe(void); }

	MOVQ	$SYS_setcontext, AX
	SYSCALL
	MOVQ	$-1, DI			// Something failed...
	MOVL	$SYS_exit, AX
	SYSCALL

TEXT runtime·sigaction(SB),NOSPLIT,$-8
	MOVL	sig+0(FP), DI		// arg 1 - signum
	MOVQ	new+8(FP), SI		// arg 2 - nsa
	MOVQ	old+16(FP), DX		// arg 3 - osa
					// arg 4 - tramp
	LEAQ	sigreturn_tramp<>(SB), R10
	MOVQ	$2, R8			// arg 5 - vers
	MOVL	$SYS___sigaction_sigtramp, AX
	SYSCALL

};

# if !GTEST_OS_WINDOWS
// Tests that an exit code describes an exit due to termination by a
// given signal.
class GTEST_API_ KilledBySignal {
 public:
  explicit KilledBySignal(int signum);
  bool operator()(int exit_status) const;
 private:
  const int signum_;
};
# endif  // !GTEST_OS_WINDOWS

// EXPECT_DEBUG_DEATH asserts that the given statements die in debug mode.

	SYS_FCHFLAGS               = 35  // { int fchflags(int fd, u_long flags); }
	SYS_SYNC                   = 36  // { int sync(void); }
	SYS_KILL                   = 37  // { int kill(int pid, int signum); }
	SYS_GETPPID                = 39  // { pid_t getppid(void); }
	SYS_DUP                    = 41  // { int dup(int fd); }
	SYS_PIPE                   = 42  // { int pipe(void); }