1 files changed, 84 insertions, 0 deletions
diff --git a/lib/msun/powerpc/fenv.c b/lib/msun/powerpc/fenv.c
new file mode 100644
index 000000000000..da11d27a649f
--- /dev/null
+++ b/lib/msun/powerpc/fenv.c
@@ -0,0 +1,84 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2004 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.
+ */
+
+#define	__fenv_static
+#include "fenv.h"
+#ifdef __SPE__
+#include <sys/types.h>
+#include <machine/spr.h>
+#endif
+
+#ifdef __GNUC_GNU_INLINE__
+#error "This file must be compiled with C99 'inline' semantics"
+#endif
+
+#ifdef __SPE__
+const fenv_t __fe_dfl_env = SPEFSCR_DFLT;
+#else
+const fenv_t __fe_dfl_env = 0x00000000;
+#endif
+
+extern inline int feclearexcept(int __excepts);
+extern inline int fegetexceptflag(fexcept_t *__flagp, int __excepts);
+extern inline int fesetexceptflag(const fexcept_t *__flagp, int __excepts);
+#ifndef __SPE__
+extern inline int feraiseexcept(int __excepts);
+#endif
+extern inline int fetestexcept(int __excepts);
+extern inline int fegetround(void);
+extern inline int fesetround(int __round);
+extern inline int fegetenv(fenv_t *__envp);
+extern inline int feholdexcept(fenv_t *__envp);
+extern inline int fesetenv(const fenv_t *__envp);
+extern inline int feupdateenv(const fenv_t *__envp);
+extern inline int feenableexcept(int __mask);
+extern inline int fedisableexcept(int __mask);
+
+#ifdef __SPE__
+#define	PMAX	0x7f7fffff
+#define	PMIN	0x00800000
+int	feraiseexcept(int __excepts)
+{
+	uint32_t spefscr;
+
+	spefscr = mfspr(SPR_SPEFSCR);
+	mtspr(SPR_SPEFSCR, spefscr | (__excepts & FE_ALL_EXCEPT));
+
+	if (__excepts & FE_INVALID)
+		__asm __volatile ("efsdiv %0, %0, %1" :: "r"(0), "r"(0));
+	if (__excepts & FE_DIVBYZERO)
+		__asm __volatile ("efsdiv %0, %0, %1" :: "r"(1.0f), "r"(0));
+	if (__excepts & FE_UNDERFLOW)
+		__asm __volatile ("efsmul %0, %0, %0" :: "r"(PMIN));
+	if (__excepts & FE_OVERFLOW)
+		__asm __volatile ("efsadd %0, %0, %0" :: "r"(PMAX));
+	if (__excepts & FE_INEXACT)
+		__asm __volatile ("efssub %0, %0, %1" :: "r"(PMIN), "r"(1.0f));
+	return (0);
+}
+#endif