From cf349fcbb555b77f22d96fe3a7b25579337ab989 Mon Sep 17 00:00:00 2001 From: Markos Chandras Date: Thu, 26 Nov 2009 10:20:01 +0000 Subject: libm: Add support for the Meta architecture Signed-off-by: Markos Chandras Signed-off-by: Bernhard Reutner-Fischer --- 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 directly; include 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 _syscall2(int,metag_setglobalbit,char *,addr,int,mask) +_syscall1(void,metag_set_fpu_flags,unsigned int,flags) -- cgit v1.2.3