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 --- libm/nds32/fedisblxcpt.c | 49 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 libm/nds32/fedisblxcpt.c (limited to 'libm/nds32/fedisblxcpt.c') diff --git a/libm/nds32/fedisblxcpt.c b/libm/nds32/fedisblxcpt.c new file mode 100644 index 000000000..bbb6d54e4 --- /dev/null +++ b/libm/nds32/fedisblxcpt.c @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2016-2017 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +/* Disable floating-point exceptions. + Copyright (C) 2001-2013 Free Software Foundation, Inc. + Contributed by Philip Blundell , 2001. + + 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 + . */ + +#include +#include "fenv_libc.h" +#include + +int +fedisableexcept (int excepts) +{ +#ifdef __NDS32_ABI_2FP_PLUS__ + unsigned long int new_exc, old_exc; + + _FPU_GETCW(new_exc); + + old_exc = (new_exc & ENABLE_MASK) >> ENABLE_SHIFT; + + excepts &= FE_ALL_EXCEPT; + + new_exc &= ~(excepts << ENABLE_SHIFT); + new_exc &= ~_FPU_RESERVED; + _FPU_SETCW (new_exc); + + return old_exc; +#else + /* Unsupported, so return -1 for failure. */ + return -1; +#endif +} -- cgit v1.2.3