From patchwork Fri Jul 10 23:38:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vineet Gupta X-Patchwork-Id: 40032 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 69C9D3875413; Fri, 10 Jul 2020 23:38:25 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 69C9D3875413 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1594424305; bh=UHuQT2ftJR9xwnhjLtNxcEQffJ2Usu3iE1jToIW2++s=; h=To:Subject:Date:In-Reply-To:References:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc: From; b=LUNpzG2yvJAukrqkpPrvBYxNflaRpXCVs7qlFj/Uu/p+p1Jw64hq26h2nVdGL2E+F 9zJ0y5eEn4RuFcIk92ov5aSNnNfcxn8xeF0s3C6dbFHapTn3lSAsFc6T2HBSklBtm0 NLnmMOq1FGC5fNMF4w0AondgIG4eMivv0+8RFZdk= X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from smtprelay-out1.synopsys.com (smtprelay-out1.synopsys.com [149.117.87.133]) by sourceware.org (Postfix) with ESMTPS id 0AE17383E830 for ; Fri, 10 Jul 2020 23:38:16 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 0AE17383E830 Received: from mailhost.synopsys.com (sv2-mailhost2.synopsys.com [10.205.2.134]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by smtprelay-out1.synopsys.com (Postfix) with ESMTPS id 1D552C04BD; Fri, 10 Jul 2020 23:38:15 +0000 (UTC) Received: from vineetg-Latitude-7400.internal.synopsys.com (unknown [10.13.183.89]) by mailhost.synopsys.com (Postfix) with ESMTP id BADBFA009D; Fri, 10 Jul 2020 23:38:14 +0000 (UTC) X-SNPS-Relay: synopsys.com To: libc-alpha@sourceware.org Subject: [COMMITTED 06/13] ARC: hardware floating point support Date: Fri, 10 Jul 2020 16:38:03 -0700 Message-Id: <20200710233810.18720-6-vgupta@synopsys.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200710233810.18720-1-vgupta@synopsys.com> References: <20200710233810.18720-1-vgupta@synopsys.com> MIME-Version: 1.0 X-Spam-Status: No, score=-13.4 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, KAM_SHORT, RCVD_IN_MSPIKE_H4, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Vineet Gupta via Libc-alpha From: Vineet Gupta Reply-To: Vineet Gupta Cc: Vineet Gupta , linux-snps-arc@lists.infradead.org Errors-To: libc-alpha-bounces@sourceware.org Sender: "Libc-alpha" Reviewed-by: Adhemerval Zanella --- sysdeps/arc/fpu/fclrexcpt.c | 36 ++++++++ sysdeps/arc/fpu/fegetenv.c | 37 ++++++++ sysdeps/arc/fpu/fegetmode.c | 31 +++++++ sysdeps/arc/fpu/fegetround.c | 32 +++++++ sysdeps/arc/fpu/feholdexcpt.c | 43 +++++++++ sysdeps/arc/fpu/fesetenv.c | 48 ++++++++++ sysdeps/arc/fpu/fesetexcept.c | 32 +++++++ sysdeps/arc/fpu/fesetmode.c | 40 +++++++++ sysdeps/arc/fpu/fesetround.c | 40 +++++++++ sysdeps/arc/fpu/feupdateenv.c | 51 +++++++++++ sysdeps/arc/fpu/fgetexcptflg.c | 31 +++++++ sysdeps/arc/fpu/fraiseexcpt.c | 39 +++++++++ sysdeps/arc/fpu/fsetexcptflg.c | 38 ++++++++ sysdeps/arc/fpu/ftestexcept.c | 33 +++++++ sysdeps/arc/fpu/math-use-builtins-fma.h | 4 + sysdeps/arc/fpu/math-use-builtins-sqrt.h | 4 + sysdeps/arc/fpu_control.h | 106 +++++++++++++++++++++++ sysdeps/arc/get-rounding-mode.h | 38 ++++++++ sysdeps/arc/math-tests-trap.h | 27 ++++++ sysdeps/arc/tininess.h | 1 + 20 files changed, 711 insertions(+) create mode 100644 sysdeps/arc/fpu/fclrexcpt.c create mode 100644 sysdeps/arc/fpu/fegetenv.c create mode 100644 sysdeps/arc/fpu/fegetmode.c create mode 100644 sysdeps/arc/fpu/fegetround.c create mode 100644 sysdeps/arc/fpu/feholdexcpt.c create mode 100644 sysdeps/arc/fpu/fesetenv.c create mode 100644 sysdeps/arc/fpu/fesetexcept.c create mode 100644 sysdeps/arc/fpu/fesetmode.c create mode 100644 sysdeps/arc/fpu/fesetround.c create mode 100644 sysdeps/arc/fpu/feupdateenv.c create mode 100644 sysdeps/arc/fpu/fgetexcptflg.c create mode 100644 sysdeps/arc/fpu/fraiseexcpt.c create mode 100644 sysdeps/arc/fpu/fsetexcptflg.c create mode 100644 sysdeps/arc/fpu/ftestexcept.c create mode 100644 sysdeps/arc/fpu/math-use-builtins-fma.h create mode 100644 sysdeps/arc/fpu/math-use-builtins-sqrt.h create mode 100644 sysdeps/arc/fpu_control.h create mode 100644 sysdeps/arc/get-rounding-mode.h create mode 100644 sysdeps/arc/math-tests-trap.h create mode 100644 sysdeps/arc/tininess.h diff --git a/sysdeps/arc/fpu/fclrexcpt.c b/sysdeps/arc/fpu/fclrexcpt.c new file mode 100644 index 000000000000..7653d99a008c --- /dev/null +++ b/sysdeps/arc/fpu/fclrexcpt.c @@ -0,0 +1,36 @@ +/* Clear given exceptions in current floating-point environment. + Copyright (C) 2020 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, see + . */ + +#include +#include + +int +feclearexcept (int excepts) +{ + unsigned int fpsr; + + _FPU_GETS (fpsr); + + /* Clear the relevant bits, FWE is preserved. */ + fpsr &= ~excepts; + + _FPU_SETS (fpsr); + + return 0; +} +libm_hidden_def (feclearexcept) diff --git a/sysdeps/arc/fpu/fegetenv.c b/sysdeps/arc/fpu/fegetenv.c new file mode 100644 index 000000000000..bbb3b477b423 --- /dev/null +++ b/sysdeps/arc/fpu/fegetenv.c @@ -0,0 +1,37 @@ +/* Store current floating-point environment. + Copyright (C) 2020 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, see + . */ + +#include +#include + +int +__fegetenv (fenv_t *envp) +{ + unsigned int fpcr; + unsigned int fpsr; + + _FPU_GETCW (fpcr); + _FPU_GETS (fpsr); + envp->__fpcr = fpcr; + envp->__fpsr = fpsr; + + return 0; +} +libm_hidden_def (__fegetenv) +weak_alias (__fegetenv, fegetenv) +libm_hidden_weak (fegetenv) diff --git a/sysdeps/arc/fpu/fegetmode.c b/sysdeps/arc/fpu/fegetmode.c new file mode 100644 index 000000000000..f02c9119f222 --- /dev/null +++ b/sysdeps/arc/fpu/fegetmode.c @@ -0,0 +1,31 @@ +/* Store current floating-point control modes. + Copyright (C) 2020 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, see + . */ + +#include +#include + +int +fegetmode (femode_t *modep) +{ + unsigned int fpcr; + + _FPU_GETCW (fpcr); + *modep = fpcr; + + return 0; +} diff --git a/sysdeps/arc/fpu/fegetround.c b/sysdeps/arc/fpu/fegetround.c new file mode 100644 index 000000000000..c5496bcbf7b4 --- /dev/null +++ b/sysdeps/arc/fpu/fegetround.c @@ -0,0 +1,32 @@ +/* Return current rounding direction. + Copyright (C) 2020 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, see + . */ + +#include +#include + +int +__fegetround (void) +{ + unsigned int fpcr; + _FPU_GETCW (fpcr); + + return (fpcr >> __FPU_RND_SHIFT) & __FPU_RND_MASK; +} +libm_hidden_def (__fegetround) +weak_alias (__fegetround, fegetround) +libm_hidden_weak (fegetround) diff --git a/sysdeps/arc/fpu/feholdexcpt.c b/sysdeps/arc/fpu/feholdexcpt.c new file mode 100644 index 000000000000..59527ee25a66 --- /dev/null +++ b/sysdeps/arc/fpu/feholdexcpt.c @@ -0,0 +1,43 @@ +/* Store current floating-point environment and clear exceptions. + Copyright (C) 2020 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, see + . */ + +#include +#include + +int +__feholdexcept (fenv_t *envp) +{ + unsigned int fpcr; + unsigned int fpsr; + + _FPU_GETCW (fpcr); + _FPU_GETS (fpsr); + + envp->__fpcr = fpcr; + envp->__fpsr = fpsr; + + fpsr &= ~FE_ALL_EXCEPT; + + _FPU_SETCW (fpcr); + _FPU_SETS (fpsr); + + return 0; +} +libm_hidden_def (__feholdexcept) +weak_alias (__feholdexcept, feholdexcept) +libm_hidden_weak (feholdexcept) diff --git a/sysdeps/arc/fpu/fesetenv.c b/sysdeps/arc/fpu/fesetenv.c new file mode 100644 index 000000000000..4ef858fc10a9 --- /dev/null +++ b/sysdeps/arc/fpu/fesetenv.c @@ -0,0 +1,48 @@ +/* Install given floating-point environment (doesnot raise exceptions). + Copyright (C) 2020 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, see + . */ + +#include +#include + +int +__fesetenv (const fenv_t *envp) +{ + unsigned int fpcr; + unsigned int fpsr; + + if (envp == FE_DFL_ENV) + { + fpcr = _FPU_DEFAULT; + fpsr = _FPU_FPSR_DEFAULT; + } + else + { + /* No need to mask out reserved bits as they are IoW. */ + fpcr = envp->__fpcr; + fpsr = envp->__fpsr; + } + + _FPU_SETCW (fpcr); + _FPU_SETS (fpsr); + + /* Success. */ + return 0; +} +libm_hidden_def (__fesetenv) +weak_alias (__fesetenv, fesetenv) +libm_hidden_weak (fesetenv) diff --git a/sysdeps/arc/fpu/fesetexcept.c b/sysdeps/arc/fpu/fesetexcept.c new file mode 100644 index 000000000000..77517d0b25ab --- /dev/null +++ b/sysdeps/arc/fpu/fesetexcept.c @@ -0,0 +1,32 @@ +/* Set given exception flags. + Copyright (C) 2020 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, see + . */ + +#include +#include + +int +fesetexcept (int excepts) +{ + unsigned int fpsr; + + _FPU_GETS (fpsr); + fpsr |= excepts; + _FPU_SETS (fpsr); + + return 0; +} diff --git a/sysdeps/arc/fpu/fesetmode.c b/sysdeps/arc/fpu/fesetmode.c new file mode 100644 index 000000000000..c4ea02d8d15b --- /dev/null +++ b/sysdeps/arc/fpu/fesetmode.c @@ -0,0 +1,40 @@ +/* Install given floating-point control modes. + Copyright (C) 2020 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, see + . */ + +#include +#include + +int +fesetmode (const femode_t *modep) +{ + unsigned int fpcr; + + if (modep == FE_DFL_MODE) + { + fpcr = _FPU_DEFAULT; + } + else + { + /* No need to mask out reserved bits as they are IoW. */ + fpcr = *modep; + } + + _FPU_SETCW (fpcr); + + return 0; +} diff --git a/sysdeps/arc/fpu/fesetround.c b/sysdeps/arc/fpu/fesetround.c new file mode 100644 index 000000000000..701c0b2dcb42 --- /dev/null +++ b/sysdeps/arc/fpu/fesetround.c @@ -0,0 +1,40 @@ +/* Set current rounding direction. + Copyright (C) 2020 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, see + . */ + +#include +#include + +int +__fesetround (int round) +{ + unsigned int fpcr; + + _FPU_GETCW (fpcr); + + if (((fpcr >> __FPU_RND_SHIFT) & __FPU_RND_MASK) != round) + { + fpcr &= ~(__FPU_RND_MASK << __FPU_RND_SHIFT); + fpcr |= (round & __FPU_RND_MASK) << __FPU_RND_SHIFT; + _FPU_SETCW (fpcr); + } + + return 0; +} +libm_hidden_def (__fesetround) +weak_alias (__fesetround, fesetround) +libm_hidden_weak (fesetround) diff --git a/sysdeps/arc/fpu/feupdateenv.c b/sysdeps/arc/fpu/feupdateenv.c new file mode 100644 index 000000000000..c63aefb25463 --- /dev/null +++ b/sysdeps/arc/fpu/feupdateenv.c @@ -0,0 +1,51 @@ +/* Install given floating-point environment and raise exceptions, + without clearing currently raised exceptions. + Copyright (C) 2020 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, see + . */ + +#include +#include + +int +__feupdateenv (const fenv_t *envp) +{ + unsigned int fpcr; + unsigned int fpsr; + + _FPU_GETS (fpsr); + + if (envp == FE_DFL_ENV) + { + fpcr = _FPU_DEFAULT; + } + else + { + fpcr = envp->__fpcr; + + /* currently raised exceptions need to be preserved. */ + fpsr |= envp->__fpsr; + } + + _FPU_SETCW (fpcr); + _FPU_SETS (fpsr); + + /* Success. */ + return 0; +} +libm_hidden_def (__feupdateenv) +weak_alias (__feupdateenv, feupdateenv) +libm_hidden_weak (feupdateenv) diff --git a/sysdeps/arc/fpu/fgetexcptflg.c b/sysdeps/arc/fpu/fgetexcptflg.c new file mode 100644 index 000000000000..a816121fd9b7 --- /dev/null +++ b/sysdeps/arc/fpu/fgetexcptflg.c @@ -0,0 +1,31 @@ +/* Store current representation for exceptions, ARC version. + Copyright (C) 2020 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, see + . */ + +#include +#include + +int +fegetexceptflag (fexcept_t *flagp, int excepts) +{ + unsigned int fpsr; + + _FPU_GETS (fpsr); + *flagp = fpsr & excepts; + + return 0; +} diff --git a/sysdeps/arc/fpu/fraiseexcpt.c b/sysdeps/arc/fpu/fraiseexcpt.c new file mode 100644 index 000000000000..067c0607784f --- /dev/null +++ b/sysdeps/arc/fpu/fraiseexcpt.c @@ -0,0 +1,39 @@ +/* Raise given exceptions. + Copyright (C) 2020 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, see + . */ + +#include +#include +#include +#include + +int +__feraiseexcept (int excepts) +{ + unsigned int fpsr; + + /* currently raised exceptions are not cleared. */ + _FPU_GETS (fpsr); + fpsr |= excepts; + + _FPU_SETS (fpsr); + + return 0; +} +libm_hidden_def (__feraiseexcept) +weak_alias (__feraiseexcept, feraiseexcept) +libm_hidden_weak (feraiseexcept) diff --git a/sysdeps/arc/fpu/fsetexcptflg.c b/sysdeps/arc/fpu/fsetexcptflg.c new file mode 100644 index 000000000000..f9e08d504418 --- /dev/null +++ b/sysdeps/arc/fpu/fsetexcptflg.c @@ -0,0 +1,38 @@ +/* Set floating-point environment exception handling, ARC version. + Copyright (C) 2020 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, see + . */ + +#include +#include + +int +fesetexceptflag (const fexcept_t *flagp, int excepts) +{ + unsigned int fpsr; + + _FPU_GETS (fpsr); + + /* Clear the bits first. */ + fpsr &= ~excepts; + + /* Now set those bits, copying them over from @flagp. */ + fpsr |= *flagp & excepts; + + _FPU_SETS (fpsr); + + return 0; +} diff --git a/sysdeps/arc/fpu/ftestexcept.c b/sysdeps/arc/fpu/ftestexcept.c new file mode 100644 index 000000000000..bb8ed27ab22b --- /dev/null +++ b/sysdeps/arc/fpu/ftestexcept.c @@ -0,0 +1,33 @@ +/* Test exception in current environment. + Copyright (C) 2020 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, see + . */ + +#include +#include +#include +#include + +int +fetestexcept (int excepts) +{ + unsigned int fpsr; + + _FPU_GETS (fpsr); + + return fpsr & excepts; +} +libm_hidden_def (fetestexcept) diff --git a/sysdeps/arc/fpu/math-use-builtins-fma.h b/sysdeps/arc/fpu/math-use-builtins-fma.h new file mode 100644 index 000000000000..eede75aa41be --- /dev/null +++ b/sysdeps/arc/fpu/math-use-builtins-fma.h @@ -0,0 +1,4 @@ +#define USE_FMA_BUILTIN 1 +#define USE_FMAF_BUILTIN 1 +#define USE_FMAL_BUILTIN 0 +#define USE_FMAF128_BUILTIN 0 diff --git a/sysdeps/arc/fpu/math-use-builtins-sqrt.h b/sysdeps/arc/fpu/math-use-builtins-sqrt.h new file mode 100644 index 000000000000..e94c915ba66a --- /dev/null +++ b/sysdeps/arc/fpu/math-use-builtins-sqrt.h @@ -0,0 +1,4 @@ +#define USE_SQRT_BUILTIN 1 +#define USE_SQRTF_BUILTIN 1 +#define USE_SQRTL_BUILTIN 0 +#define USE_SQRTF128_BUILTIN 0 diff --git a/sysdeps/arc/fpu_control.h b/sysdeps/arc/fpu_control.h new file mode 100644 index 000000000000..38f167530f48 --- /dev/null +++ b/sysdeps/arc/fpu_control.h @@ -0,0 +1,106 @@ +/* FPU control word bits. ARC version. + Copyright (C) 2020 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, see + . */ + +#ifndef _FPU_CONTROL_H +#define _FPU_CONTROL_H + +/* ARC FPU control register bits. + + [ 0] -> IVE: Enable invalid operation exception. + if 0, soft exception: status register IV flag set. + if 1, hardware exception trap (not supported in Linux yet). + [ 1] -> DZE: Enable division by zero exception. + if 0, soft exception: status register IV flag set. + if 1, hardware exception: (not supported in Linux yet). + [9:8] -> RM: Rounding Mode: + 00 - Rounding toward zero. + 01 - Rounding to nearest (default). + 10 - Rounding (up) toward plus infinity. + 11 - Rounding (down)toward minus infinity. + + ARC FPU status register bits. + + [ 0] -> IV: flag invalid operation. + [ 1] -> DZ: flag division by zero. + [ 2] -> OV: flag Overflow operation. + [ 3] -> UV: flag Underflow operation. + [ 4] -> IX: flag Inexact operation. + [31] -> FWE: Flag Write Enable. + If 1, above flags writable explicitly (clearing), + else IoW and only writable indirectly via bits [12:7]. */ + +#include + +#if !defined(__ARC_FPU_SP__) && !defined(__ARC_FPU_DP__) + +# define _FPU_RESERVED 0xffffffff +# define _FPU_DEFAULT 0x00000000 +typedef unsigned int fpu_control_t; +# define _FPU_GETCW(cw) (cw) = 0 +# define _FPU_SETCW(cw) (void) (cw) +# define _FPU_GETS(cw) (cw) = 0 +# define _FPU_SETS(cw) (void) (cw) +extern fpu_control_t __fpu_control; + +#else + +#define _FPU_RESERVED 0 + +/* The fdlibm code requires strict IEEE double precision arithmetic, + and no interrupts for exceptions, rounding to nearest. + So only RM set to b'01. */ +# define _FPU_DEFAULT 0x00000100 + +/* Actually default needs to have FWE bit as 1 but that is already + ingrained into _FPU_SETS macro below. */ +#define _FPU_FPSR_DEFAULT 0x00000000 + +#define __FPU_RND_SHIFT 8 +#define __FPU_RND_MASK 0x3 + +/* Type of the control word. */ +typedef unsigned int fpu_control_t; + +/* Macros for accessing the hardware control word. */ +# define _FPU_GETCW(cw) __asm__ volatile ("lr %0, [0x300]" : "=r" (cw)) +# define _FPU_SETCW(cw) __asm__ volatile ("sr %0, [0x300]" : : "r" (cw)) + +/* Macros for accessing the hardware status word. + FWE bit is special as it controls if actual status bits could be wrritten + explicitly (other than FPU instructions). We handle it here to keep the + callers agnostic of it: + - clear it out when reporting status bits + - always set it when changing status bits. */ +# define _FPU_GETS(cw) \ + __asm__ volatile ("lr %0, [0x301] \r\n" \ + "bclr %0, %0, 31 \r\n" \ + : "=r" (cw)) + +# define _FPU_SETS(cw) \ + do { \ + unsigned int __tmp = 0x80000000 | (cw); \ + __asm__ volatile ("sr %0, [0x301] \r\n" \ + : : "r" (__tmp)); \ + } while (0) + +/* Default control word set at startup. */ +extern fpu_control_t __fpu_control; + +#endif + +#endif /* fpu_control.h */ diff --git a/sysdeps/arc/get-rounding-mode.h b/sysdeps/arc/get-rounding-mode.h new file mode 100644 index 000000000000..15173e37aa4f --- /dev/null +++ b/sysdeps/arc/get-rounding-mode.h @@ -0,0 +1,38 @@ +/* Determine floating-point rounding mode within libc. ARC version. + Copyright (C) 2020 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, see + . */ + +#ifndef _ARC_GET_ROUNDING_MODE_H +#define _ARC_GET_ROUNDING_MODE_H 1 + +#include +#include + +static inline int +get_rounding_mode (void) +{ +#if defined(__ARC_FPU_SP__) || defined(__ARC_FPU_DP__) + unsigned int fpcr; + _FPU_GETCW (fpcr); + + return (fpcr >> __FPU_RND_SHIFT) & __FPU_RND_MASK; +#else + return FE_TONEAREST; +#endif +} + +#endif /* get-rounding-mode.h */ diff --git a/sysdeps/arc/math-tests-trap.h b/sysdeps/arc/math-tests-trap.h new file mode 100644 index 000000000000..08b16f57976a --- /dev/null +++ b/sysdeps/arc/math-tests-trap.h @@ -0,0 +1,27 @@ +/* Configuration for math tests: support for enabling exception traps. + ARC version. + Copyright (C) 2020 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, see + . */ + +#ifndef ARC_MATH_TESTS_TRAP_H +#define ARC_MATH_TESTS_TRAP_H 1 + +/* Trapping exceptions are optional on ARC + and not supported in Linux kernel just yet. */ +#define EXCEPTION_ENABLE_SUPPORTED(EXCEPT) ((EXCEPT) == 0) + +#endif /* math-tests-trap.h. */ diff --git a/sysdeps/arc/tininess.h b/sysdeps/arc/tininess.h new file mode 100644 index 000000000000..1db37790f881 --- /dev/null +++ b/sysdeps/arc/tininess.h @@ -0,0 +1 @@ +#define TININESS_AFTER_ROUNDING 1