17 files changed, 660 insertions, 0 deletions
diff --git a/ports/sysdeps/mips/fpu/e_sqrt.c b/ports/sysdeps/mips/fpu/e_sqrt.c
new file mode 100644
index 0000000000..f597509486
--- /dev/null
+++ b/ports/sysdeps/mips/fpu/e_sqrt.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 2002, 2011 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+
+#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;
+}
+strong_alias (__ieee754_sqrt, __sqrt_finite)
+
+#else
+
+#include <sysdeps/ieee754/dbl-64/e_sqrt.c>
+
+#endif
diff --git a/ports/sysdeps/mips/fpu/e_sqrtf.c b/ports/sysdeps/mips/fpu/e_sqrtf.c
new file mode 100644
index 0000000000..7aaf0d1e36
--- /dev/null
+++ b/ports/sysdeps/mips/fpu/e_sqrtf.c
@@ -0,0 +1,39 @@
+/* Copyright (C) 2002, 2011 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+
+#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;
+}
+strong_alias (__ieee754_sqrtf, __sqrtf_finite)
+
+#else
+
+#include <sysdeps/ieee754/flt-32/e_sqrtf.c>
+
+#endif
+
diff --git a/ports/sysdeps/mips/fpu/fclrexcpt.c b/ports/sysdeps/mips/fpu/fclrexcpt.c
new file mode 100644
index 0000000000..f97d892605
--- /dev/null
+++ b/ports/sysdeps/mips/fpu/fclrexcpt.c
@@ -0,0 +1,46 @@
+/* Clear given exceptions in current floating-point environment.
+   Copyright (C) 1998, 1999, 2000, 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Jaeger <aj@suse.de>, 1998.
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fenv_libc.h>
+#include <fpu_control.h>
+
+int
+feclearexcept (int excepts)
+{
+  int cw;
+
+  /* Mask out unsupported bits/exceptions.  */
+  excepts &= FE_ALL_EXCEPT;
+
+  /* Read the complete control word.  */
+  _FPU_GETCW (cw);
+
+  /* Clear exception flag bits and cause bits. If the cause bit is not
+     cleared, the next CTC instruction (just below) will re-generate the
+     exception.  */
+
+  cw &= ~(excepts | (excepts << CAUSE_SHIFT));
+
+  /* Put the new data in effect.  */
+  _FPU_SETCW (cw);
+
+  /* Success.  */
+  return 0;
+}
diff --git a/ports/sysdeps/mips/fpu/fedisblxcpt.c b/ports/sysdeps/mips/fpu/fedisblxcpt.c
new file mode 100644
index 0000000000..98a01705d7
--- /dev/null
+++ b/ports/sysdeps/mips/fpu/fedisblxcpt.c
@@ -0,0 +1,41 @@
+/* Disable floating-point exceptions.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Jaeger <aj@suse.de>, 2000.
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fenv_libc.h>
+#include <fpu_control.h>
+
+int
+fedisableexcept (int excepts)
+{
+  unsigned int new_exc, old_exc;
+
+  /* Get the current control word.  */
+  _FPU_GETCW (new_exc);
+
+  old_exc = (new_exc & ENABLE_MASK) >> ENABLE_SHIFT;
+
+  excepts &= FE_ALL_EXCEPT;
+
+  new_exc &= ~(excepts << ENABLE_SHIFT);
+  new_exc &= ~_FPU_RESERVED;
+  _FPU_SETCW (new_exc);
+
+  return old_exc;
+}
diff --git a/ports/sysdeps/mips/fpu/feenablxcpt.c b/ports/sysdeps/mips/fpu/feenablxcpt.c
new file mode 100644
index 0000000000..8d81d6a432
--- /dev/null
+++ b/ports/sysdeps/mips/fpu/feenablxcpt.c
@@ -0,0 +1,41 @@
+/* Enable floating-point exceptions.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Jaeger <aj@suse.de>, 2000.
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fenv_libc.h>
+#include <fpu_control.h>
+
+int
+feenableexcept (int excepts)
+{
+  unsigned int new_exc, old_exc;
+
+  /* Get the current control word.  */
+  _FPU_GETCW (new_exc);
+
+  old_exc = (new_exc & ENABLE_MASK) >> ENABLE_SHIFT;
+
+  excepts &= FE_ALL_EXCEPT;
+
+  new_exc |= excepts << ENABLE_SHIFT;
+  new_exc &= ~_FPU_RESERVED;
+  _FPU_SETCW (new_exc);
+
+  return old_exc;
+}
diff --git a/ports/sysdeps/mips/fpu/fegetenv.c b/ports/sysdeps/mips/fpu/fegetenv.c
new file mode 100644
index 0000000000..33838fba68
--- /dev/null
+++ b/ports/sysdeps/mips/fpu/fegetenv.c
@@ -0,0 +1,31 @@
+/* Store current floating-point environment.
+   Copyright (C) 1998, 1999, 2000, 2002, 2010 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Jaeger <aj@suse.de>, 1998.
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+fegetenv (fenv_t *envp)
+{
+  _FPU_GETCW (*envp);
+
+  /* Success.  */
+  return 0;
+}
+libm_hidden_def (fegetenv)
diff --git a/ports/sysdeps/mips/fpu/fegetexcept.c b/ports/sysdeps/mips/fpu/fegetexcept.c
new file mode 100644
index 0000000000..076cb5056e
--- /dev/null
+++ b/ports/sysdeps/mips/fpu/fegetexcept.c
@@ -0,0 +1,33 @@
+/* Get enabled floating-point exceptions.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Jaeger <aj@suse.de>, 2000.
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fenv_libc.h>
+#include <fpu_control.h>
+
+int
+fegetexcept (void)
+{
+  unsigned int exc;
+
+  /* Get the current control word.  */
+  _FPU_GETCW (exc);
+
+  return (exc & ENABLE_MASK) >> ENABLE_SHIFT;
+}
diff --git a/ports/sysdeps/mips/fpu/fegetround.c b/ports/sysdeps/mips/fpu/fegetround.c
new file mode 100644
index 0000000000..5033887fa1
--- /dev/null
+++ b/ports/sysdeps/mips/fpu/fegetround.c
@@ -0,0 +1,32 @@
+/* Return current rounding direction.
+   Copyright (C) 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Jaeger <aj@arthur.rhein-neckar.de>, 1998.
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+fegetround (void)
+{
+  int cw;
+
+  /* Get control word.  */
+  _FPU_GETCW (cw);
+
+  return cw & 0x3;
+}
diff --git a/ports/sysdeps/mips/fpu/feholdexcpt.c b/ports/sysdeps/mips/fpu/feholdexcpt.c
new file mode 100644
index 0000000000..695c62b4ba
--- /dev/null
+++ b/ports/sysdeps/mips/fpu/feholdexcpt.c
@@ -0,0 +1,39 @@
+/* Store current floating-point environment and clear exceptions.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Jaeger <aj@suse.de>, 2000.
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+feholdexcept (fenv_t *envp)
+{
+  fpu_control_t cw;
+
+  /* Save the current state.  */
+  _FPU_GETCW (cw);
+  envp->__fp_control_register = cw;
+
+  /* Clear all exception enable bits and flags.  */
+  cw &= ~(_FPU_MASK_V|_FPU_MASK_Z|_FPU_MASK_O|_FPU_MASK_U|_FPU_MASK_I|FE_ALL_EXCEPT);
+  _FPU_SETCW (cw);
+
+  return 0;
+}
+
+libm_hidden_def (feholdexcept)
diff --git a/ports/sysdeps/mips/fpu/fenv_libc.h b/ports/sysdeps/mips/fpu/fenv_libc.h
new file mode 100644
index 0000000000..f4e8b4a72c
--- /dev/null
+++ b/ports/sysdeps/mips/fpu/fenv_libc.h
@@ -0,0 +1,31 @@
+/* Copyright (C) 2000, 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Jaeger <aj@suse.de>.
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _FENV_LIBC_H
+#define _FENV_LIBC_H    1
+
+/* Mask for enabling exceptions and for the CAUSE bits.  */
+#define ENABLE_MASK	0x00F80U
+#define CAUSE_MASK	0x1F000U
+
+/* Shift for FE_* flags to get up to the ENABLE bits and the CAUSE bits.  */
+#define	ENABLE_SHIFT	5
+#define	CAUSE_SHIFT	10
+
+
+#endif /* _FENV_LIBC_H */
diff --git a/ports/sysdeps/mips/fpu/fesetenv.c b/ports/sysdeps/mips/fpu/fesetenv.c
new file mode 100644
index 0000000000..66c7f2d0fa
--- /dev/null
+++ b/ports/sysdeps/mips/fpu/fesetenv.c
@@ -0,0 +1,42 @@
+/* Install given floating-point environment.
+   Copyright (C) 1998, 1999, 2000, 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Jaeger <aj@suse.de>, 1998.
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+fesetenv (const fenv_t *envp)
+{
+  fpu_control_t cw;
+
+  /* Read first current state to flush fpu pipeline.  */
+  _FPU_GETCW (cw);
+
+  if (envp == FE_DFL_ENV)
+    _FPU_SETCW (_FPU_DEFAULT);
+  else if (envp == FE_NOMASK_ENV)
+    _FPU_SETCW (_FPU_IEEE);
+  else
+    _FPU_SETCW (envp->__fp_control_register);
+
+  /* Success.  */
+  return 0;
+}
+
+libm_hidden_def (fesetenv)
diff --git a/ports/sysdeps/mips/fpu/fesetround.c b/ports/sysdeps/mips/fpu/fesetround.c
new file mode 100644
index 0000000000..4ca3aee04f
--- /dev/null
+++ b/ports/sysdeps/mips/fpu/fesetround.c
@@ -0,0 +1,44 @@
+/* Set current rounding direction.
+   Copyright (C) 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Jaeger <aj@arthur.rhein-neckar.de>, 1998.
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+fesetround (int round)
+{
+  fpu_control_t cw;
+
+  if ((round & ~0x3) != 0)
+    /* ROUND is no valid rounding mode.  */
+    return 1;
+
+  /* Get current state.  */
+  _FPU_GETCW (cw);
+
+  /* Set rounding bits.  */
+  cw &= ~0x3;
+  cw |= round;
+  /* Set new state.  */
+  _FPU_SETCW (cw);
+
+  return 0;
+}
+
+libm_hidden_def (fesetround)
diff --git a/ports/sysdeps/mips/fpu/feupdateenv.c b/ports/sysdeps/mips/fpu/feupdateenv.c
new file mode 100644
index 0000000000..c028f04f2c
--- /dev/null
+++ b/ports/sysdeps/mips/fpu/feupdateenv.c
@@ -0,0 +1,43 @@
+/* Install given floating-point environment and raise exceptions.
+   Copyright (C) 1998, 1999, 2000, 2002, 2010 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Jaeger <aj@suse.de>, 1998.
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+feupdateenv (const fenv_t *envp)
+{
+  int temp;
+
+  /* Save current exceptions.  */
+  _FPU_GETCW (temp);
+  temp &= FE_ALL_EXCEPT;
+
+  /* Install new environment.  */
+  fesetenv (envp);
+
+  /* Raise the safed exception.  Incidently for us the implementation
+     defined format of the values in objects of type fexcept_t is the
+     same as the ones specified using the FE_* constants.  */
+  feraiseexcept (temp);
+
+  /* Success.  */
+  return 0;
+}
+libm_hidden_def (feupdateenv)
diff --git a/ports/sysdeps/mips/fpu/fgetexcptflg.c b/ports/sysdeps/mips/fpu/fgetexcptflg.c
new file mode 100644
index 0000000000..a9a8b80ae6
--- /dev/null
+++ b/ports/sysdeps/mips/fpu/fgetexcptflg.c
@@ -0,0 +1,39 @@
+/* Store current representation for exceptions.
+   Copyright (C) 1998, 1999, 2000, 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Jaeger <aj@suse.de>, 1998.
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+fegetexceptflag (fexcept_t *flagp, int excepts)
+{
+  fpu_control_t temp;
+
+  /* Get the current exceptions.  */
+  _FPU_GETCW (temp);
+
+  /* We only save the relevant bits here. In particular, care has to be 
+     taken with the CAUSE bits, as an inadvertent restore later on could
+     generate unexpected exceptions.  */
+
+  *flagp = temp & excepts & FE_ALL_EXCEPT;
+
+  /* Success.  */
+  return 0;
+}
diff --git a/ports/sysdeps/mips/fpu/fraiseexcpt.c b/ports/sysdeps/mips/fpu/fraiseexcpt.c
new file mode 100644
index 0000000000..61de1e250b
--- /dev/null
+++ b/ports/sysdeps/mips/fpu/fraiseexcpt.c
@@ -0,0 +1,46 @@
+/* Raise given exceptions.
+   Copyright (C) 2000, 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Jaeger <aj@suse.de>, 2000.
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fenv_libc.h>
+#include <fpu_control.h>
+
+int
+feraiseexcept (int excepts)
+{
+  fpu_control_t cw;
+
+  /* Get current state.  */
+  _FPU_GETCW (cw);
+
+  /* Set flag bits (which are accumulative), and *also* set the 
+     cause bits. The setting of the cause bits is what actually causes
+     the hardware to generate the exception, if the corresponding enable
+     bit is set as well.  */
+
+  excepts &= FE_ALL_EXCEPT;
+  cw |= excepts | (excepts << CAUSE_SHIFT);
+
+  /* Set new state.  */
+  _FPU_SETCW (cw);
+
+  return 0;
+}
+
+libm_hidden_def (feraiseexcept)
diff --git a/ports/sysdeps/mips/fpu/fsetexcptflg.c b/ports/sysdeps/mips/fpu/fsetexcptflg.c
new file mode 100644
index 0000000000..2118db0e5f
--- /dev/null
+++ b/ports/sysdeps/mips/fpu/fsetexcptflg.c
@@ -0,0 +1,42 @@
+/* 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+fesetexceptflag (const fexcept_t *flagp, int excepts)
+{
+  fpu_control_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;
+}
diff --git a/ports/sysdeps/mips/fpu/ftestexcept.c b/ports/sysdeps/mips/fpu/ftestexcept.c
new file mode 100644
index 0000000000..ff1e07865e
--- /dev/null
+++ b/ports/sysdeps/mips/fpu/ftestexcept.c
@@ -0,0 +1,33 @@
+/* Test exception in current environment.
+   Copyright (C) 1998, 2010 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Jaeger <aj@arthur.rhein-neckar.de>, 1998.
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+int
+fetestexcept (int excepts)
+{
+  int cw;
+
+  /* Get current control word.  */
+  _FPU_GETCW (cw);
+
+  return cw & excepts & FE_ALL_EXCEPT;
+}
+libm_hidden_def (fetestexcept)