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[06/12] Add femode_t functions: ia64
- From: Joseph Myers <joseph at codesourcery dot com>
- To: <libc-alpha at sourceware dot org>
- Cc: <vapier at gentoo dot org>
- Date: Fri, 2 Sep 2016 21:56:42 +0000
- Subject: [06/12] Add femode_t functions: ia64
- Authentication-results: sourceware.org; auth=none
This patch adds IA64 versions of fegetmode and fesetmode. Untested.
2016-09-02 Joseph Myers <joseph@codesourcery.com>
* sysdeps/ia64/fpu/fegetmode.c: New file.
* sysdeps/ia64/fpu/fesetmode.c: Likewise.
diff --git a/sysdeps/ia64/fpu/fegetmode.c b/sysdeps/ia64/fpu/fegetmode.c
new file mode 100644
index 0000000..0ccaa8f
--- /dev/null
+++ b/sysdeps/ia64/fpu/fegetmode.c
@@ -0,0 +1,26 @@
+/* Store current floating-point control modes. IA64 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)
+{
+ __asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (*modep));
+ return 0;
+}
diff --git a/sysdeps/ia64/fpu/fesetmode.c b/sysdeps/ia64/fpu/fesetmode.c
new file mode 100644
index 0000000..11187e9
--- /dev/null
+++ b/sysdeps/ia64/fpu/fesetmode.c
@@ -0,0 +1,42 @@
+/* Install given floating-point control modes. IA64 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>
+
+#define FPSR_STATUS 0x1f80UL
+#define FPSR_STATUS_ALL ((FPSR_STATUS << 6) | (FPSR_STATUS << 19) \
+ | (FPSR_STATUS << 32) | (FPSR_STATUS << 45))
+
+int
+fesetmode (const femode_t *modep)
+{
+ femode_t mode;
+
+ /* As in fesetenv. */
+ if (((fenv_t) modep >> 62) == 0x03)
+ mode = (femode_t) modep & 0x3fffffffffffffffUL;
+ else
+ mode = *modep;
+
+ femode_t fpsr;
+ __asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (fpsr));
+ fpsr = (fpsr & FPSR_STATUS_ALL) | (mode & ~FPSR_STATUS_ALL);
+ __asm__ __volatile__ ("mov.m ar.fpsr=%0;;" :: "r" (fpsr));
+
+ return 0;
+}
--
Joseph S. Myers
joseph@codesourcery.com