From: Joseph Myers <joseph@codesourcery.com>
Date: Wed, 7 Sep 2016 16:48:41 +0000 (+0000)
Subject: Add femode_t functions: sparc.
X-Git-Tag: glibc-2.25~542
X-Git-Url: https://sourceware.org/git/?a=commitdiff_plain;h=ed29339bf95362bd540be94ea3c2b94f78d363ec;p=glibc.git

Add femode_t functions: sparc.

This patch adds SPARC versions of fegetmode and fesetmode.  Untested.

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

diff --git a/ChangeLog b/ChangeLog
index 7e9355676b..ea062d20c3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2016-09-07  Joseph Myers  <joseph@codesourcery.com>
 
+	* sysdeps/sparc/fpu/fegetmode.c: New file.
+	* sysdeps/sparc/fpu/fesetmode.c: Likewise.
+
 	* sysdeps/sh/sh4/fpu/fegetmode.c: New file.
 	* sysdeps/sh/sh4/fpu/fesetmode.c: Likewise.
 
diff --git a/sysdeps/sparc/fpu/fegetmode.c b/sysdeps/sparc/fpu/fegetmode.c
new file mode 100644
index 0000000000..68e694e03d
--- /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 0000000000..4a0080e1a4
--- /dev/null
+++ b/sysdeps/sparc/fpu/fesetmode.c
@@ -0,0 +1,38 @@
+/* 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);
+  fsr &= ~FPU_CONTROL_BITS;
+  if (modep == FE_DFL_MODE)
+    fsr |= _FPU_DEFAULT;
+  else
+    fsr |= *modep & FPU_CONTROL_BITS;
+  __fenv_ldfsr (fsr);
+
+  return 0;
+}