MIPS specific optimizations.

3 files changed, 120 insertions, 0 deletions

diff --git a/sysdeps/mips/fpu/e_sqrt.c b/sysdeps/mips/fpu/e_sqrt.c
new file mode 100644
index 0000000000..5449710aff
--- /dev/null
+++ b/sysdeps/mips/fpu/e_sqrt.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Hartvig Ekner <hartvige@mips.com>, 2002.
+
+   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 <sgidefs.h>
+
+
+#if (_MIPS_ISA >= _MIPS_ISA_MIPS2)
+
+double
+__ieee754_sqrt (double x)
+{
+  double z;
+  __asm__ ("sqrt.d %0,%1" : "=f" (z) : "f" (x));
+  return z;
+}
+
+#else
+
+#include <sysdeps/ieee754/dbl-64/e_sqrt.c>
+
+#endif
diff --git a/sysdeps/mips/fpu/e_sqrtf.c b/sysdeps/mips/fpu/e_sqrtf.c
new file mode 100644
index 0000000000..3590ad46d5
--- /dev/null
+++ b/sysdeps/mips/fpu/e_sqrtf.c
@@ -0,0 +1,39 @@
+/* Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Hartvig Ekner <hartvige@mips.com>, 2002.
+
+   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 <sgidefs.h>
+
+
+#if (_MIPS_ISA >= _MIPS_ISA_MIPS2)
+
+float
+__ieee754_sqrtf (float x)
+{
+  float z;
+  __asm__ ("sqrt.s %0,%1" : "=f" (z) : "f" (x));
+  return z;
+}
+
+#else
+
+#include <sysdeps/ieee754/flt-32/e_sqrtf.c>
+
+#endif
+
diff --git a/sysdeps/mips/fpu/fsetexcptflg.c b/sysdeps/mips/fpu/fsetexcptflg.c
new file mode 100644
index 0000000000..c65d793178
--- /dev/null
+++ b/sysdeps/mips/fpu/fsetexcptflg.c
@@ -0,0 +1,43 @@
+/* Set floating-point environment exception handling.
+   Copyright (C) 1998, 1999, 2000, 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Hartvig Ekner <hartvige@mips.com>, 2002.
+
+   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.h>
+#include <fpu_control.h>
+
+int
+fesetexceptflag (const fexcept_t *flagp, int excepts)
+{
+  fexcept_t temp;
+
+  /* Get the current exceptions.  */
+  _FPU_GETCW (temp);
+
+  /* Make sure the flags we want restored are legal.  */
+  excepts &= FE_ALL_EXCEPT;
+
+  /* Now clear the bits called for, and copy them in from flagp. Note that
+     we ignore all non-flag bits from *flagp, so they don't matter.  */
+  temp = (temp & ~excepts) | (*flagp & excepts);
+
+  _FPU_SETCW (temp);
+
+  /* Success.  */
+  return 0;
+}