From 4c38c1a229bc3628269ad98bd7e8d31d118d91f6 Mon Sep 17 00:00:00 2001 From: Florian Weimer Date: Fri, 4 Dec 2020 09:13:43 +0100 Subject: powerpc64le: Add glibc-hwcaps support The "power10" and "power9" subdirectories are selected in a way that matches the -mcpu=power10 and -mcpu=power9 options of GCC. --- sysdeps/powerpc/powerpc64/le/dl-hwcaps-subdirs.c | 46 ++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 sysdeps/powerpc/powerpc64/le/dl-hwcaps-subdirs.c (limited to 'sysdeps/powerpc/powerpc64/le/dl-hwcaps-subdirs.c') diff --git a/sysdeps/powerpc/powerpc64/le/dl-hwcaps-subdirs.c b/sysdeps/powerpc/powerpc64/le/dl-hwcaps-subdirs.c new file mode 100644 index 0000000000..6a21d77649 --- /dev/null +++ b/sysdeps/powerpc/powerpc64/le/dl-hwcaps-subdirs.c @@ -0,0 +1,46 @@ +/* Architecture-specific glibc-hwcaps subdirectories. powerpc64le 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 + +const char _dl_hwcaps_subdirs[] = "power10:power9"; +enum { subdirs_count = 2 }; /* Number of components in _dl_hwcaps_subdirs. */ + +uint32_t +_dl_hwcaps_subdirs_active (void) +{ + int active = 0; + + /* Test in reverse preference order. Altivec and VSX are implied by + the powerpc64le ABI definition. */ + + /* POWER9. GCC enables float128 hardware support for -mcpu=power9. */ + if ((GLRO (dl_hwcap2) & PPC_FEATURE2_ARCH_3_00) == 0 + || (GLRO (dl_hwcap2) & PPC_FEATURE2_HAS_IEEE128) == 0) + return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active); + ++active; + + /* POWER10. GCC defines __MMA__ for -mcpu=power10. */ + if ((GLRO (dl_hwcap2) & PPC_FEATURE2_ARCH_3_1) == 0 + || (GLRO (dl_hwcap2) & PPC_FEATURE2_MMA) == 0) + return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active); + ++active; + + return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active); +} -- cgit 1.4.1