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authorKaz Kojima <kkojima@rr.iij4u.or.jp>2012-04-05 11:43:30 +0900
committerKaz Kojima <kkojima@rr.iij4u.or.jp>2012-04-05 11:43:30 +0900
commit15a946b57a1e7f4ba95b63572062860ca1a5e58f (patch)
tree0965e410cebc68a678ef9a0704bad00eaad765e3 /sysdeps/sh/sh4
parentd653abb723919fb11f8573cdedf65505c0eca55f (diff)
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Add support fedisableexcept, feenableexcept, fegetexcept and feupdateenv
for SH.
Diffstat (limited to 'sysdeps/sh/sh4')
-rw-r--r--sysdeps/sh/sh4/fpu/fedisblxcpt.c39
-rw-r--r--sysdeps/sh/sh4/fpu/feenablxcpt.c38
-rw-r--r--sysdeps/sh/sh4/fpu/fegetexcept.c35
-rw-r--r--sysdeps/sh/sh4/fpu/feupdateenv.c39
4 files changed, 151 insertions, 0 deletions
diff --git a/sysdeps/sh/sh4/fpu/fedisblxcpt.c b/sysdeps/sh/sh4/fpu/fedisblxcpt.c
new file mode 100644
index 0000000..029fcc3
--- /dev/null
+++ b/sysdeps/sh/sh4/fpu/fedisblxcpt.c
@@ -0,0 +1,39 @@
+/* Disable floating-point exceptions.
+ Copyright (C) 2012 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Nobuhiro Iwamatsu <iwamatsu@nigauri.org>, 2012.
+
+ 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
+fedisableexcept (int excepts)
+{
+ unsigned int temp, old_exc;
+
+ /* Get the current control register contents. */
+ _FPU_GETCW (temp);
+
+ old_exc = (temp >> 5) & FE_ALL_EXCEPT;
+
+ excepts &= FE_ALL_EXCEPT;
+
+ temp &= ~(excepts << 5);
+ _FPU_SETCW (temp);
+
+ return old_exc;
+}
diff --git a/sysdeps/sh/sh4/fpu/feenablxcpt.c b/sysdeps/sh/sh4/fpu/feenablxcpt.c
new file mode 100644
index 0000000..93fa749
--- /dev/null
+++ b/sysdeps/sh/sh4/fpu/feenablxcpt.c
@@ -0,0 +1,38 @@
+/* Enable floating-point exceptions.
+ Copyright (C) 2012 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Nobuhiro Iwamatsu <iwamatsu@nigauri.org>, 2012.
+
+ 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
+feenableexcept (int excepts)
+{
+ unsigned int temp, old_flag;
+
+ /* Get current exceptions. */
+ _FPU_GETCW (temp);
+
+ old_flag = (temp >> 5) & FE_ALL_EXCEPT;
+ excepts &= FE_ALL_EXCEPT;
+
+ temp |= excepts << 5;
+ _FPU_SETCW (temp);
+
+ return old_flag;
+}
diff --git a/sysdeps/sh/sh4/fpu/fegetexcept.c b/sysdeps/sh/sh4/fpu/fegetexcept.c
new file mode 100644
index 0000000..a849a17
--- /dev/null
+++ b/sysdeps/sh/sh4/fpu/fegetexcept.c
@@ -0,0 +1,35 @@
+/* Get enabled floating-point exceptions.
+ Copyright (C) 2012 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Nobuhiro Iwamatsu <iwamatsu@nigauri.org>, 2012.
+
+ 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
+fegetexcept (void)
+{
+ unsigned int temp;
+
+ /* Get current exceptions. */
+ _FPU_GETCW (temp);
+ /* When read fpscr, this was initialized.
+ We need to rewrite value of temp. */
+ _FPU_SETCW (temp);
+
+ return (temp >> 5) & FE_ALL_EXCEPT;
+}
diff --git a/sysdeps/sh/sh4/fpu/feupdateenv.c b/sysdeps/sh/sh4/fpu/feupdateenv.c
new file mode 100644
index 0000000..96a6979
--- /dev/null
+++ b/sysdeps/sh/sh4/fpu/feupdateenv.c
@@ -0,0 +1,39 @@
+/* Install given floating-point environment and raise exceptions.
+ Copyright (C) 2012 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Nobuhiro Iwamatsu <iwamatsu@nigauri.org>, 2012.
+
+ 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)
+{
+ unsigned int temp;
+
+ _FPU_GETCW (temp);
+ temp = (temp & FE_ALL_EXCEPT);
+
+ /* Raise the saved 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. */
+ fesetenv (envp);
+ feraiseexcept ((int) temp);
+
+ return 0;
+}
+libm_hidden_def (feupdateenv)