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 --- libm/metag/Makefile.arch | 23 ++++++++++++ libm/metag/fclrexcpt.c | 44 +++++++++++++++++++++++ libm/metag/fedisblxcpt.c | 40 +++++++++++++++++++++ libm/metag/feenablxcpt.c | 40 +++++++++++++++++++++ libm/metag/fegetenv.c | 36 +++++++++++++++++++ libm/metag/fegetexcept.c | 31 ++++++++++++++++ libm/metag/fegetround.c | 30 ++++++++++++++++ libm/metag/feholdexcpt.c | 41 +++++++++++++++++++++ libm/metag/fesetenv.c | 60 +++++++++++++++++++++++++++++++ libm/metag/fesetround.c | 41 +++++++++++++++++++++ libm/metag/feupdateenv.c | 45 +++++++++++++++++++++++ libm/metag/fgetexcptflg.c | 34 ++++++++++++++++++ libm/metag/fraiseexcpt.c | 92 +++++++++++++++++++++++++++++++++++++++++++++++ libm/metag/fsetexcptflg.c | 44 +++++++++++++++++++++++ libm/metag/ftestexcept.c | 32 +++++++++++++++++ libm/metag/internal.h | 7 ++++ 16 files changed, 640 insertions(+) create mode 100644 libm/metag/Makefile.arch create mode 100644 libm/metag/fclrexcpt.c create mode 100644 libm/metag/fedisblxcpt.c create mode 100644 libm/metag/feenablxcpt.c create mode 100644 libm/metag/fegetenv.c create mode 100644 libm/metag/fegetexcept.c create mode 100644 libm/metag/fegetround.c create mode 100644 libm/metag/feholdexcpt.c create mode 100644 libm/metag/fesetenv.c create mode 100644 libm/metag/fesetround.c create mode 100644 libm/metag/feupdateenv.c create mode 100644 libm/metag/fgetexcptflg.c create mode 100644 libm/metag/fraiseexcpt.c create mode 100644 libm/metag/fsetexcptflg.c create mode 100644 libm/metag/ftestexcept.c create mode 100644 libm/metag/internal.h (limited to 'libm') diff --git a/libm/metag/Makefile.arch b/libm/metag/Makefile.arch new file mode 100644 index 000000000..4cc5a6b46 --- /dev/null +++ b/libm/metag/Makefile.arch @@ -0,0 +1,23 @@ +# Makefile for uClibc +# +# Copyright (c) 2013 Imagination Technologies Ltd. +# +# Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. +# + +ifeq ($(UCLIBC_HAS_FENV),y) +ifeq ($(CONFIG_META_2_1),y) +libm_ARCH_SRC:=$(wildcard $(libm_ARCH_DIR)/*.c) +libm_ARCH_OBJ:=$(patsubst $(libm_ARCH_DIR)/%.c,$(libm_ARCH_OUT)/%.o,$(libm_ARCH_SRC)) +CFLAGS-libm += -Wa,-mfpu=metac21 +endif +endif + +libm_ARCH_OBJS:=$(libm_ARCH_OBJ) + +ifeq ($(DOPIC),y) +libm-a-y+=$(libm_ARCH_OBJS:.o=.os) +else +libm-a-y+=$(libm_ARCH_OBJS) +endif +libm-so-y+=$(libm_ARCH_OBJS:.o=.os) diff --git a/libm/metag/fclrexcpt.c b/libm/metag/fclrexcpt.c new file mode 100644 index 000000000..10bdc870b --- /dev/null +++ b/libm/metag/fclrexcpt.c @@ -0,0 +1,44 @@ +/* Clear given exceptions in current floating-point environment. + 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. */ + +#include +#include + +#include "internal.h" + +int +feclearexcept (int excepts) +{ + unsigned int temp; + + /* Get the current exceptions. */ + __asm__ ("MOV %0,TXDEFR" : "=r" (temp)); + + /* Mask out unsupported bits/exceptions. */ + excepts &= FE_ALL_EXCEPT; + + excepts <<= 16; + + temp &= ~excepts; + + metag_set_fpu_flags(temp); + + /* Success. */ + return 0; +} diff --git a/libm/metag/fedisblxcpt.c b/libm/metag/fedisblxcpt.c new file mode 100644 index 000000000..07313fa9b --- /dev/null +++ b/libm/metag/fedisblxcpt.c @@ -0,0 +1,40 @@ +/* Disable floating-point exceptions. + 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. */ + +#include +#include + +#include "internal.h" + +int +fedisableexcept (int excepts) +{ + unsigned int old_exc; + + /* Get the current control word. */ + __asm__ ("MOV %0,TXDEFR" : "=r" (old_exc)); + + old_exc &= FE_ALL_EXCEPT; + + excepts = old_exc & ~excepts; + + metag_set_fpu_flags(excepts); + + return old_exc; +} diff --git a/libm/metag/feenablxcpt.c b/libm/metag/feenablxcpt.c new file mode 100644 index 000000000..8feb9641c --- /dev/null +++ b/libm/metag/feenablxcpt.c @@ -0,0 +1,40 @@ +/* Enable floating-point exceptions. + 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. */ + +#include +#include + +#include "internal.h" + +int +feenableexcept (int excepts) +{ + unsigned int old_exc; + + /* Get the current control word. */ + __asm__ ("MOV %0,TXDEFR" : "=r" (old_exc)); + + old_exc &= FE_ALL_EXCEPT; + + excepts |= old_exc; + + metag_set_fpu_flags(excepts); + + return old_exc; +} diff --git a/libm/metag/fegetenv.c b/libm/metag/fegetenv.c new file mode 100644 index 000000000..c932514c2 --- /dev/null +++ b/libm/metag/fegetenv.c @@ -0,0 +1,36 @@ +/* Store current floating-point environment. + 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. */ + +#include + +int +fegetenv (fenv_t *envp) +{ + unsigned int txdefr; + unsigned int txmode; + + __asm__ ("MOV %0,TXDEFR" : "=r" (txdefr)); + __asm__ ("MOV %0,TXMODE" : "=r" (txmode)); + + envp->txdefr = txdefr; + envp->txmode = txmode; + + /* Success. */ + return 0; +} diff --git a/libm/metag/fegetexcept.c b/libm/metag/fegetexcept.c new file mode 100644 index 000000000..8021f6c78 --- /dev/null +++ b/libm/metag/fegetexcept.c @@ -0,0 +1,31 @@ +/* Get enabled floating-point exceptions. + 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. */ + +#include + +int +fegetexcept (void) +{ + unsigned int exc; + + /* Get the current control word. */ + __asm__ ("MOV %0,TXDEFR" : "=r" (exc)); + + return exc & FE_ALL_EXCEPT; +} diff --git a/libm/metag/fegetround.c b/libm/metag/fegetround.c new file mode 100644 index 000000000..1fb5ce2b1 --- /dev/null +++ b/libm/metag/fegetround.c @@ -0,0 +1,30 @@ +/* Return current rounding direction. + 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. */ + +#include + +int +fegetround (void) +{ + unsigned int txmode; + + __asm__ ("MOV %0,TXMODE" : "=r" (txmode)); + + return (txmode >> 16) & 0x3; +} diff --git a/libm/metag/feholdexcpt.c b/libm/metag/feholdexcpt.c new file mode 100644 index 000000000..98ef4d097 --- /dev/null +++ b/libm/metag/feholdexcpt.c @@ -0,0 +1,41 @@ +/* Store current floating-point environment and clear exceptions. + Copyright (C) 2013 Imagination Technologies Ltd. + 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#include + +#include "internal.h" + +int +feholdexcept (fenv_t *envp) +{ + unsigned int txdefr; + unsigned int txmode; + + __asm__ ("MOV %0,TXDEFR" : "=r" (txdefr)); + __asm__ ("MOV %0,TXMODE" : "=r" (txmode)); + + envp->txdefr = txdefr; + envp->txmode = txmode; + + metag_set_fpu_flags(0); + + return 0; +} diff --git a/libm/metag/fesetenv.c b/libm/metag/fesetenv.c new file mode 100644 index 000000000..7295492b8 --- /dev/null +++ b/libm/metag/fesetenv.c @@ -0,0 +1,60 @@ +/* Install given floating-point environment. + 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. */ + +#include +#include + +#include "internal.h" + +libm_hidden_proto(fesetenv) + +int +fesetenv (const fenv_t *envp) +{ + unsigned int exc; + unsigned int txmode; + + __asm__ ("MOV %0,TXMODE" : "=r" (txmode)); + + /* Clear rounding mode bits (round to nearest). */ + txmode &= ~(0x3 << 16); + + if (envp == FE_DFL_ENV) + { + exc = 0; + } + else if (envp == FE_NOMASK_ENV) + { + exc = 0x1f; + } + else + { + exc = envp->txdefr & (FE_ALL_EXCEPT | (FE_ALL_EXCEPT << 16)); + /* Write rounding mode and guard bit. */ + txmode |= (0x1 << 18 ) | (envp->txmode & (0x3 << 16)); + } + + __asm__ ("MOV TXMODE,%0" : : "r" (txmode)); + + metag_set_fpu_flags(exc); + + /* Success. */ + return 0; +} +libm_hidden_def(fesetenv) diff --git a/libm/metag/fesetround.c b/libm/metag/fesetround.c new file mode 100644 index 000000000..2d5b2526f --- /dev/null +++ b/libm/metag/fesetround.c @@ -0,0 +1,41 @@ +/* Set current rounding direction. + 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. */ + +#include +#include + +int +fesetround (int round) +{ + unsigned int txmode; + + if ((round & ~0x3) != 0) + /* ROUND is no valid rounding mode. */ + return 1; + + __asm__ ("MOV %0,TXMODE" : "=r" (txmode)); + + txmode &= ~(0x3 << 16); + /* Write rounding mode and guard bit. */ + txmode |= (0x1 << 18 ) | (round << 16); + + __asm__ ("MOV TXMODE,%0" : : "r" (txmode)); + + return 0; +} diff --git a/libm/metag/feupdateenv.c b/libm/metag/feupdateenv.c new file mode 100644 index 000000000..f2fc69f54 --- /dev/null +++ b/libm/metag/feupdateenv.c @@ -0,0 +1,45 @@ +/* Install given floating-point environment and raise exceptions. + 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. */ + +#include +#include + +libm_hidden_proto(fesetenv) +libm_hidden_proto(feraiseexcept) + +int +feupdateenv (const fenv_t *envp) +{ + unsigned int temp; + + /* Save current exceptions. */ + __asm__ ("MOV %0,TXDEFR" : "=r" (temp)); + + temp >>= 16; + temp &= FE_ALL_EXCEPT; + + /* Install new environment. */ + fesetenv (envp); + + /* Raise the saved exception. */ + feraiseexcept ((int) temp); + + /* Success. */ + return 0; +} diff --git a/libm/metag/fgetexcptflg.c b/libm/metag/fgetexcptflg.c new file mode 100644 index 000000000..e1a4bdfaa --- /dev/null +++ b/libm/metag/fgetexcptflg.c @@ -0,0 +1,34 @@ +/* Store current representation for exceptions. + 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. */ + +#include + +int +fegetexceptflag (fexcept_t *flagp, int excepts) +{ + unsigned int temp; + + /* Get the current exceptions. */ + __asm__ ("MOV %0,TXDEFR" : "=r" (temp)); + + *flagp = temp & excepts & FE_ALL_EXCEPT; + + /* Success. */ + return 0; +} diff --git a/libm/metag/fraiseexcpt.c b/libm/metag/fraiseexcpt.c new file mode 100644 index 000000000..9ab39bbf6 --- /dev/null +++ b/libm/metag/fraiseexcpt.c @@ -0,0 +1,92 @@ +/* Raise given exceptions. + 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. */ + +#include +#include + +libm_hidden_proto(feraiseexcept) + +int +feraiseexcept (int excepts) +{ + /* Raise exceptions represented by EXPECTS. But we must raise only + one signal at a time. It is important that if the overflow/underflow + exception and the inexact exception are given at the same time, + the overflow/underflow exception follows the inexact exception. */ + + /* First: invalid exception. */ + if ((FE_INVALID & excepts) != 0) + { + /* Reciprocal square root of a negative number is invalid. */ + __asm__ volatile( + "F MOV FX.0,#0xc000 ! -2\n" + "F RSQ FX.1,FX.0\n" + ); + } + + /* Next: division by zero. */ + if ((FE_DIVBYZERO & excepts) != 0) + { + __asm__ volatile( + "F MOV FX.0,#0\n" + "F RCP FX.1,FX.0\n" + ); + } + + /* Next: overflow. */ + if ((FE_OVERFLOW & excepts) != 0) + { + /* Adding a large number in single precision can cause overflow. */ + __asm__ volatile( + " MOVT D0.0,#0x7f7f\n" + " ADD D0.0,D0.0,#0xffff\n" + "F MOV FX.0,D0.0\n" + "F ADD FX.1,FX.0,FX.0\n" + ); + } + + /* Next: underflow. */ + if ((FE_UNDERFLOW & excepts) != 0) + { + /* Multiplying a small value by 0.5 will cause an underflow. */ + __asm__ volatile( + " MOV D0.0,#1\n" + "F MOV FX.0,D0.0\n" + " MOVT D0.0,#0x3f00\n" + "F MOV FX.1,D0.0\n" + "F MUL FX.2,FX.1,FX.0\n" + ); + } + + /* Last: inexact. */ + if ((FE_INEXACT & excepts) != 0) + { + /* Converting a small single precision value to half precision + can cause an inexact exception. */ + __asm__ volatile( + " MOV D0.0,#0x0001\n" + "F MOV FX.0,D0.0\n" + "F FTOH FX.1,FX.0\n" + ); + } + + /* Success. */ + return 0; +} +libm_hidden_def(feraiseexcept) diff --git a/libm/metag/fsetexcptflg.c b/libm/metag/fsetexcptflg.c new file mode 100644 index 000000000..11ae917e5 --- /dev/null +++ b/libm/metag/fsetexcptflg.c @@ -0,0 +1,44 @@ +/* Set floating-point environment exception handling. + 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. */ + +#include +#include +#include + +#include "internal.h" + +int +fesetexceptflag (const fexcept_t *flagp, int excepts) +{ + unsigned int temp; + + /* Get the current exceptions. */ + __asm__ ("MOV %0,TXDEFR" : "=r" (temp)); + + excepts &= FE_ALL_EXCEPT; + excepts <<= 16; + + temp &= ~excepts; + temp |= *flagp & excepts; + + metag_set_fpu_flags(temp); + + /* Success. */ + return 0; +} diff --git a/libm/metag/ftestexcept.c b/libm/metag/ftestexcept.c new file mode 100644 index 000000000..898630d14 --- /dev/null +++ b/libm/metag/ftestexcept.c @@ -0,0 +1,32 @@ +/* Test exception in current environment. + 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. */ + +#include +#include + +int +fetestexcept (int excepts) +{ + unsigned int temp; + + /* Get the current exceptions. */ + __asm__ ("MOV %0,TXDEFR" : "=r" (temp)); + + return (temp >> 16) & excepts & FE_ALL_EXCEPT; +} diff --git a/libm/metag/internal.h b/libm/metag/internal.h new file mode 100644 index 000000000..77297727b --- /dev/null +++ b/libm/metag/internal.h @@ -0,0 +1,7 @@ +/* + * Copyright (C) 2013 Imagination Technologies Ltd. + * + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +void metag_set_fpu_flags(unsigned int flags); -- cgit v1.2.3