From 6af3332a4cbd1ffbc81f74759ef7c5e1a87d2e10 Mon Sep 17 00:00:00 2001 From: Vincent Ren-Wei Chen Date: Tue, 17 Jan 2017 07:31:24 +0100 Subject: nds32: add NPTL/TLS, *context function, libm changes and code cleanup This commit includes following features. 1. Support NPTL/TLS 2. Add libm function which is used to handle FP rounding and excpetions (ex: fclrexcpt,fedisblxcpti,feenablxcpt... ) 3. Add *context function for operating user context (ex: setcontext,getcontext,makecontext... ) 4. Change the return flow from signal handler 5. Cleanup of old code The testsuite only has 2 errors, tst-cpuclock1 and tst-cputimer1, which are related to timing accuracy. (math and locale tests are disabled) Signed-off-by: Vincent Ren-Wei Chen --- libc/sysdeps/linux/nds32/bits/fenv.h | 79 ++++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 libc/sysdeps/linux/nds32/bits/fenv.h (limited to 'libc/sysdeps/linux/nds32/bits/fenv.h') diff --git a/libc/sysdeps/linux/nds32/bits/fenv.h b/libc/sysdeps/linux/nds32/bits/fenv.h new file mode 100644 index 000000000..010d870f5 --- /dev/null +++ b/libc/sysdeps/linux/nds32/bits/fenv.h @@ -0,0 +1,79 @@ +/* Copyright (C) 2004-2012 Free Software Foundation, Inc. + + 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 + . */ + +#ifndef _FENV_H +# error "Never use directly; include instead." +#endif + +/* Define bits representing exceptions in the FPCSR status word. */ +enum + { + FE_INVALID = +#define FE_INVALID 0x4 + FE_INVALID, + FE_DIVBYZERO = +#define FE_DIVBYZERO 0x8 + FE_DIVBYZERO, + FE_OVERFLOW = +#define FE_OVERFLOW 0x10 + FE_OVERFLOW, + FE_UNDERFLOW = +#define FE_UNDERFLOW 0x20 + FE_UNDERFLOW, + FE_INEXACT = +#define FE_INEXACT 0x40 + FE_INEXACT, + }; + + +/* All supported exceptions. */ +#define FE_ALL_EXCEPT \ + (FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW | FE_INEXACT) + +/* Define bits representing rounding modes in the FPCSR RM field. */ +enum + { + FE_TONEAREST = +#define FE_TONEAREST 0x0 + FE_TONEAREST, + FE_UPWARD = +#define FE_UPWARD 0x1 + FE_UPWARD, + FE_DOWNWARD = +#define FE_DOWNWARD 0x2 + FE_DOWNWARD, + FE_TOWARDZERO = +#define FE_TOWARDZERO 0x3 + FE_TOWARDZERO + }; + +/* Type representing exception flags. */ +typedef unsigned int fexcept_t; + +/* Type representing floating-point environment. */ +typedef struct + { + unsigned int __fpcsr; + } +fenv_t; + +/* If the default argument is used we use this value. */ +#define FE_DFL_ENV ((const fenv_t *) -1l) + +#ifdef __USE_GNU +/* Floating-point environment where none of the exceptions are masked. */ +# define FE_NOMASK_ENV ((const fenv_t *) -2) +#endif -- cgit v1.2.3