Rewrite <fenv.h> for ARM.

The old code was one big no-op.

Bug: http://code.google.com/p/android/issues/detail?id=38196
Change-Id: I201a6ffa477385b2629f45e8c948bdfbd47b5bf1

1 files changed, 0 insertions, 220 deletions

diff --git a/libm/mips/fenv.h b/libm/mips/fenv.h
deleted file mode 100644
index 583d0022f..000000000
--- a/libm/mips/fenv.h
+++ /dev/null
@@ -1,220 +0,0 @@
-/*-
- * Copyright (c) 2004-2005 David Schultz <das@FreeBSD.ORG>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * $FreeBSD: src/lib/msun/mips/fenv.h,v 1.1 2008/04/26 12:20:29 imp Exp $
- */
-
-#ifndef	_FENV_H_
-#define	_FENV_H_
-
-#include <sys/cdefs.h>
-#include <sys/_types.h>
-
-__BEGIN_DECLS
-
-typedef	__uint32_t	fenv_t;
-typedef	__uint32_t	fexcept_t;
-
-/* Exception flags */
-#define	FE_INVALID	0x0001
-#define	FE_DIVBYZERO	0x0002
-#define	FE_OVERFLOW	0x0004
-#define	FE_UNDERFLOW	0x0008
-#define	FE_INEXACT	0x0010
-#define	FE_ALL_EXCEPT	(FE_DIVBYZERO | FE_INEXACT | \
-			 FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW)
-
-/* Rounding modes */
-#define	FE_TONEAREST	0x0000
-#define	FE_TOWARDZERO	0x0001
-#define	FE_UPWARD	0x0002
-#define	FE_DOWNWARD	0x0003
-#define	_ROUND_MASK	(FE_TONEAREST | FE_DOWNWARD | \
-			 FE_UPWARD | FE_TOWARDZERO)
-
-/* Default floating-point environment */
-extern const fenv_t	__fe_dfl_env;
-#define	FE_DFL_ENV	(&__fe_dfl_env)
-
-/* We need to be able to map status flag positions to mask flag positions */
-#define _FPUSW_SHIFT	16
-#define	_ENABLE_MASK	(FE_ALL_EXCEPT << _FPUSW_SHIFT)
-
-#ifdef	ARM_HARD_FLOAT
-#define	__rfs(__fpsr)	__asm __volatile("rfs %0" : "=r" (*(__fpsr)))
-#define	__wfs(__fpsr)	__asm __volatile("wfs %0" : : "r" (__fpsr))
-#else
-#define __rfs(__fpsr)
-#define __wfs(__fpsr)
-#endif
-
-static __inline int
-feclearexcept(int __excepts)
-{
-	fexcept_t __fpsr;
-
-	__rfs(&__fpsr);
-	__fpsr &= ~__excepts;
-	__wfs(__fpsr);
-	return (0);
-}
-
-static __inline int
-fegetexceptflag(fexcept_t *__flagp, int __excepts)
-{
-	fexcept_t __fpsr;
-
-	__rfs(&__fpsr);
-	*__flagp = __fpsr & __excepts;
-	return (0);
-}
-
-static __inline int
-fesetexceptflag(const fexcept_t *__flagp, int __excepts)
-{
-	fexcept_t __fpsr;
-
-	__rfs(&__fpsr);
-	__fpsr &= ~__excepts;
-	__fpsr |= *__flagp & __excepts;
-	__wfs(__fpsr);
-	return (0);
-}
-
-static __inline int
-feraiseexcept(int __excepts)
-{
-	fexcept_t __ex = __excepts;
-
-	fesetexceptflag(&__ex, __excepts);	/* XXX */
-	return (0);
-}
-
-static __inline int
-fetestexcept(int __excepts)
-{
-	fexcept_t __fpsr;
-
-	__rfs(&__fpsr);
-	return (__fpsr & __excepts);
-}
-
-static __inline int
-fegetround(void)
-{
-
-	/*
-	 * Apparently, the rounding mode is specified as part of the
-	 * instruction format on ARM, so the dynamic rounding mode is
-	 * indeterminate.  Some FPUs may differ.
-	 */
-	return (-1);
-}
-
-static __inline int
-fesetround(int __round)
-{
-
-	return (-1);
-}
-
-static __inline int
-fegetenv(fenv_t *__envp)
-{
-
-	__rfs(__envp);
-	return (0);
-}
-
-static __inline int
-feholdexcept(fenv_t *__envp)
-{
-	fenv_t __env;
-
-	__rfs(&__env);
-	*__envp = __env;
-	__env &= ~(FE_ALL_EXCEPT | _ENABLE_MASK);
-	__wfs(__env);
-	return (0);
-}
-
-static __inline int
-fesetenv(const fenv_t *__envp)
-{
-
-	__wfs(*__envp);
-	return (0);
-}
-
-static __inline int
-feupdateenv(const fenv_t *__envp)
-{
-	fexcept_t __fpsr;
-
-	__rfs(&__fpsr);
-	__wfs(*__envp);
-	feraiseexcept(__fpsr & FE_ALL_EXCEPT);
-	return (0);
-}
-
-#if __BSD_VISIBLE
-
-static __inline int
-feenableexcept(int __mask)
-{
-	fenv_t __old_fpsr, __new_fpsr;
-
-	__rfs(&__old_fpsr);
-	__new_fpsr = __old_fpsr | (__mask & FE_ALL_EXCEPT) << _FPUSW_SHIFT;
-	__wfs(__new_fpsr);
-	return ((__old_fpsr >> _FPUSW_SHIFT) & FE_ALL_EXCEPT);
-}
-
-static __inline int
-fedisableexcept(int __mask)
-{
-	fenv_t __old_fpsr, __new_fpsr;
-
-	__rfs(&__old_fpsr);
-	__new_fpsr = __old_fpsr & ~((__mask & FE_ALL_EXCEPT) << _FPUSW_SHIFT);
-	__wfs(__new_fpsr);
-	return ((__old_fpsr >> _FPUSW_SHIFT) & FE_ALL_EXCEPT);
-}
-
-static __inline int
-fegetexcept(void)
-{
-	fenv_t __fpsr;
-
-	__rfs(&__fpsr);
-	return ((__fpsr & _ENABLE_MASK) >> _FPUSW_SHIFT);
-}
-
-#endif /* __BSD_VISIBLE */
-
-__END_DECLS
-
-#endif	/* !_FENV_H_ */
-