From Steve Papacharalambous:

Add math support for PowerPC e500.

1 files changed, 60 insertions, 0 deletions

diff --git a/libm/powerpc/e500/fpu/fedisblxcpt.c b/libm/powerpc/e500/fpu/fedisblxcpt.c
new file mode 100644
index 000000000..d2c5caba7
--- /dev/null
+++ b/libm/powerpc/e500/fpu/fedisblxcpt.c
@@ -0,0 +1,60 @@
+/* Disable floating-point exceptions.
+   Copyright (C) 2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Aldy Hernandez <aldyh@redhat.com>, 2004.
+
+   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 "fenv_libc.h"
+#include <syscall.h>
+#include <sys/prctl.h>
+
+int
+fedisableexcept (int excepts)
+{
+  unsigned int result = 0, pflags, r;
+  INTERNAL_SYSCALL_DECL (err);
+
+  INTERNAL_SYSCALL (prctl, err, 2, PR_GET_FPEXC, &pflags);
+
+  /* Save old enable bits.  */
+  if (pflags & PR_FP_EXC_OVF) 
+    result |= FE_OVERFLOW;
+  if (pflags & PR_FP_EXC_UND) 
+    result |= FE_UNDERFLOW;
+  if (pflags & PR_FP_EXC_INV) 
+    result |= FE_INVALID;
+  if (pflags & PR_FP_EXC_DIV) 
+    result |= FE_DIVBYZERO;
+  if (pflags & PR_FP_EXC_RES) 
+    result |= FE_INEXACT;
+
+  if (excepts & FE_INEXACT)
+    pflags &=  ~PR_FP_EXC_RES;
+  if (excepts & FE_DIVBYZERO)
+    pflags &= ~PR_FP_EXC_DIV;
+  if (excepts & FE_UNDERFLOW)
+    pflags &= ~PR_FP_EXC_UND;
+  if (excepts & FE_OVERFLOW)
+    pflags &= ~PR_FP_EXC_OVF;
+  if (excepts & FE_INVALID)
+    pflags &= ~PR_FP_EXC_INV;
+  r = INTERNAL_SYSCALL (prctl, err, 2, PR_SET_FPEXC, pflags);
+  if (INTERNAL_SYSCALL_ERROR_P (r, err))
+    return -1;
+
+  return result;
+}