MFC 262989, 263210, 263230, 263231, 263239, 263242, 263243,

  Export _libc_arm_fpu_present as a private symbol to be used by other
  system libraries, for example libm.

  On armv6 access both the softfloat and, when available, the vfp to get and
  set the floating-point environment.

  Build fenv-vfp.c with the softfp float abi. Without this gcc generates an
  incorrect assembly file that doesn't allow for vfp instructions.

  Only build the vfp/softfp switching code on armv6 as we don't support vfp
  on anything earlier than this. This should fix the armeb and arm builds
  when using gcc.

  Add an optimised version of the float and double helper functions.

1 files changed, 53 insertions, 0 deletions

diff --git a/lib/msun/arm/fenv-mangle.h b/lib/msun/arm/fenv-mangle.h
new file mode 100644
index 0000000..476f7b2
--- /dev/null
+++ b/lib/msun/arm/fenv-mangle.h
@@ -0,0 +1,53 @@
+/*-
+ * Copyright (c) 2013 Andrew Turner <andrew@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.
+ *
+ * $FreeBSD$
+ */
+
+#ifdef _FENV_MANGLE_H_
+#error Only include fenv-mangle.h once
+#endif
+
+#define	_FENV_MANGLE_H_
+
+#ifndef FENV_MANGLE
+#error FENV_MANGLE is undefined
+#endif
+
+#define	feclearexcept	FENV_MANGLE(feclearexcept)
+#define	fegetexceptflag	FENV_MANGLE(fegetexceptflag)
+#define	fesetexceptflag	FENV_MANGLE(fesetexceptflag)
+#define	feraiseexcept	FENV_MANGLE(feraiseexcept)
+#define	fetestexcept	FENV_MANGLE(fetestexcept)
+#define	fegetround	FENV_MANGLE(fegetround)
+#define	fesetround	FENV_MANGLE(fesetround)
+#define	fegetenv	FENV_MANGLE(fegetenv)
+#define	feholdexcept	FENV_MANGLE(feholdexcept)
+#define	fesetenv	FENV_MANGLE(fesetenv)
+#define	feupdateenv	FENV_MANGLE(feupdateenv)
+#define	feenableexcept	FENV_MANGLE(feenableexcept)
+#define	fedisableexcept	FENV_MANGLE(fedisableexcept)
+#define	fegetexcept	FENV_MANGLE(fegetexcept)
+