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[12/12] Add femode_t functions: sparc

Message ID alpine.DEB.2.20.1609022159000.4311@digraph.polyomino.org.uk
State New
Headers show

Commit Message

Joseph Myers Sept. 2, 2016, 9:59 p.m. UTC 
This patch adds SPARC versions of fegetmode and fesetmode.  Untested.

2016-09-02  Joseph Myers  <joseph@codesourcery.com>

	* sysdeps/sparc/fpu/fegetmode.c: New file.
	* sysdeps/sparc/fpu/fesetmode.c: Likewise.
diff mbox

Patch

diff --git a/sysdeps/sparc/fpu/fegetmode.c b/sysdeps/sparc/fpu/fegetmode.c
new file mode 100644
index 0000000..68e694e
--- /dev/null
+++ b/sysdeps/sparc/fpu/fegetmode.c
@@ -0,0 +1,26 @@ 
+/* Store current floating-point control modes.  SPARC version.
+   Copyright (C) 2016 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+
+int
+fegetmode (femode_t *modep)
+{
+  __fenv_stfsr (*modep);
+  return 0;
+}
diff --git a/sysdeps/sparc/fpu/fesetmode.c b/sysdeps/sparc/fpu/fesetmode.c
new file mode 100644
index 0000000..18ef90d
--- /dev/null
+++ b/sysdeps/sparc/fpu/fesetmode.c
@@ -0,0 +1,37 @@ 
+/* Install given floating-point control modes.  SPARC version.
+   Copyright (C) 2016 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+#define FPU_CONTROL_BITS 0xcfc00000UL
+
+int
+fesetmode (const femode_t *modep)
+{
+  femode_t fsr;
+
+  __fenv_stfsr (fsr);
+  if (modep == FE_DFL_ENV)
+    fsr = (fsr & ~FPU_CONTROL_BITS) | _FPU_DEFAULT;
+  else
+    fsr = (fsr & ~FPU_CONTROL_BITS) | (*modep & FPU_CONTROL_BITS);
+  __fenv_ldfsr (fsr);
+
+  return 0;
+}