From Steve Papacharalambous:

Add math support for PowerPC e500.

1 files changed, 67 insertions, 0 deletions

diff --git a/libm/powerpc/e500/spe-raise.c b/libm/powerpc/e500/spe-raise.c
new file mode 100644
index 000000000..fb53dcec7
--- /dev/null
+++ b/libm/powerpc/e500/spe-raise.c
@@ -0,0 +1,67 @@
+/* Raise given exceptions.
+   Copyright (C) 1997,99,2000,01,02,04 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include "fpu/fenv_libc.h"
+
+int
+__FERAISEEXCEPT_INTERNAL (int excepts)
+{
+  unsigned long f;
+
+  f = fegetenv_register ();
+  f |= (excepts & FE_ALL_EXCEPT);
+  fesetenv_register (f);
+
+  /* Force the operations that cause the exceptions.  */
+  if ((FE_INVALID & excepts) != 0)
+    {
+      /* ?? Does not set sticky bit ?? */
+      /* 0 / 0 */
+      asm volatile ("efsdiv %0,%0,%1" : : "r" (0), "r" (0));
+    }
+
+  if ((FE_DIVBYZERO & excepts) != 0)
+    {
+      /* 1.0 / 0.0 */
+      asm volatile ("efsdiv %0,%0,%1" : : "r" (1.0F), "r" (0));
+    }
+
+  if ((FE_OVERFLOW & excepts) != 0)
+    {
+      /* ?? Does not set sticky bit ?? */
+      /* Largest normalized number plus itself.  */
+      asm volatile ("efsadd %0,%0,%1" : : "r" (0x7f7fffff), "r" (0x7f7fffff));
+    }
+
+  if ((FE_UNDERFLOW & excepts) != 0)
+    {
+      /* ?? Does not set sticky bit ?? */
+      /* Smallest normalized number times itself.  */
+      asm volatile ("efsmul %0,%0,%1" : : "r" (0x800000), "r" (0x800000));
+    }
+
+  if ((FE_INEXACT & excepts) != 0)
+    {
+      /* Smallest normalized minus 1.0 raises the inexact flag.  */
+      asm volatile ("efssub %0,%0,%1" : : "r" (0x00800000), "r" (1.0F));
+    }
+
+  /* Success.  */
+  return 0;
+}