From cf349fcbb555b77f22d96fe3a7b25579337ab989 Mon Sep 17 00:00:00 2001
From: Markos Chandras <markos.chandras@imgtec.com>
Date: Thu, 26 Nov 2009 10:20:01 +0000
Subject: libm: Add support for the Meta architecture
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
---
libc/sysdeps/linux/metag/bits/fenv.h | 77 ++++++++++++++++++++++++++++++++++++
libc/sysdeps/linux/metag/metag.c | 1 +
2 files changed, 78 insertions(+)
create mode 100644 libc/sysdeps/linux/metag/bits/fenv.h
(limited to 'libc/sysdeps')
diff --git a/libc/sysdeps/linux/metag/bits/fenv.h b/libc/sysdeps/linux/metag/bits/fenv.h
new file mode 100644
index 000000000..279440504
--- /dev/null
+++ b/libc/sysdeps/linux/metag/bits/fenv.h
@@ -0,0 +1,77 @@
+/* Copyright (C) 2013 Imagination Technologies Ltd.
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef _FENV_H
+# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
+#endif
+
+
+/* Define bits representing the exception. We use the bit positions
+ of the appropriate bits in TXDEFR. */
+enum
+ {
+ FE_INEXACT = 0x1,
+#define FE_INEXACT FE_INEXACT
+ FE_UNDERFLOW = 0x2,
+#define FE_UNDERFLOW FE_UNDERFLOW
+ FE_OVERFLOW = 0x4,
+#define FE_OVERFLOW FE_OVERFLOW
+ FE_DIVBYZERO = 0x8,
+#define FE_DIVBYZERO FE_DIVBYZERO
+ FE_INVALID = 0x10,
+#define FE_INVALID FE_INVALID
+ };
+
+#define FE_ALL_EXCEPT \
+ (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)
+
+/* The Meta FPU supports all of the four defined rounding modes. We
+ use the values of the rounding mode bits in TXMODE as the values
+ for the appropriate macros. */
+enum
+ {
+ FE_TONEAREST = 0x0,
+#define FE_TONEAREST FE_TONEAREST
+ FE_TOWARDZERO = 0x1,
+#define FE_TOWARDZERO FE_TOWARDZERO
+ FE_UPWARD = 0x2,
+#define FE_UPWARD FE_UPWARD
+ FE_DOWNWARD = 0x3
+#define FE_DOWNWARD FE_DOWNWARD
+ };
+
+
+/* Type representing exception flags. */
+typedef unsigned int fexcept_t;
+
+
+/* Type representing floating-point environment. */
+typedef struct
+ {
+ unsigned int txdefr;
+ unsigned int txmode;
+ }
+fenv_t;
+
+/* If the default argument is used we use this value. */
+#define FE_DFL_ENV ((__const fenv_t *) -1)
+
+#ifdef __USE_GNU
+/* Floating-point environment where none of the exception is masked. */
+# define FE_NOMASK_ENV ((__const fenv_t *) -2)
+#endif
diff --git a/libc/sysdeps/linux/metag/metag.c b/libc/sysdeps/linux/metag/metag.c
index a92f2149c..bf2be68c8 100644
--- a/libc/sysdeps/linux/metag/metag.c
+++ b/libc/sysdeps/linux/metag/metag.c
@@ -8,3 +8,4 @@
#include <sys/syscall.h>
_syscall2(int,metag_setglobalbit,char *,addr,int,mask)
+_syscall1(void,metag_set_fpu_flags,unsigned int,flags)
--
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