diff options
Diffstat (limited to 'sysdeps/powerpc/hwcapinfo.c')
| -rw-r--r-- | sysdeps/powerpc/hwcapinfo.c | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/sysdeps/powerpc/hwcapinfo.c b/sysdeps/powerpc/hwcapinfo.c deleted file mode 100644 index 82ad222c36..0000000000 --- a/sysdeps/powerpc/hwcapinfo.c +++ /dev/null @@ -1,84 +0,0 @@ -/* powerpc HWCAP/HWCAP2 and AT_PLATFORM data pre-processing. - Copyright (C) 2015-2017 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 - <http://www.gnu.org/licenses/>. */ - -#include <unistd.h> -#include <shlib-compat.h> -#include <dl-procinfo.h> - -uint64_t __tcb_hwcap __attribute__ ((visibility ("hidden"))); -uint32_t __tcb_platform __attribute__ ((visibility ("hidden"))); - -/* This function parses the HWCAP/HWCAP2 fields, adding the previous supported - ISA bits, as well as converting the AT_PLATFORM string to a number. This - data is stored in two global variables that can be used later by the - powerpc-specific code to store it into the TCB. */ -void -__tcb_parse_hwcap_and_convert_at_platform (void) -{ - - uint64_t h1, h2; - - /* Read AT_PLATFORM string from auxv and convert it to a number. */ - __tcb_platform = _dl_string_platform (GLRO (dl_platform)); - - /* Read HWCAP and HWCAP2 from auxv. */ - h1 = GLRO (dl_hwcap); - h2 = GLRO (dl_hwcap2); - - /* hwcap contains only the latest supported ISA, the code checks which is - and fills the previous supported ones. */ - - if (h2 & PPC_FEATURE2_ARCH_2_07) - h1 |= PPC_FEATURE_ARCH_2_06 - | PPC_FEATURE_ARCH_2_05 - | PPC_FEATURE_POWER5_PLUS - | PPC_FEATURE_POWER5 - | PPC_FEATURE_POWER4; - else if (h1 & PPC_FEATURE_ARCH_2_06) - h1 |= PPC_FEATURE_ARCH_2_05 - | PPC_FEATURE_POWER5_PLUS - | PPC_FEATURE_POWER5 - | PPC_FEATURE_POWER4; - else if (h1 & PPC_FEATURE_ARCH_2_05) - h1 |= PPC_FEATURE_POWER5_PLUS - | PPC_FEATURE_POWER5 - | PPC_FEATURE_POWER4; - else if (h1 & PPC_FEATURE_POWER5_PLUS) - h1 |= PPC_FEATURE_POWER5 - | PPC_FEATURE_POWER4; - else if (h1 & PPC_FEATURE_POWER5) - h1 |= PPC_FEATURE_POWER4; - - /* Consolidate both HWCAP and HWCAP2 into a single doubleword so that - we can read both in a single load later. */ - __tcb_hwcap = h2; - __tcb_hwcap = (h1 << 32) | __tcb_hwcap; - -} -#if IS_IN (rtld) -versioned_symbol (ld, __tcb_parse_hwcap_and_convert_at_platform, \ - __parse_hwcap_and_convert_at_platform, GLIBC_2_23); -#endif - -/* Export __parse_hwcap_and_convert_at_platform in libc.a. This is used by - GCC to make sure that the HWCAP/Platform bits are stored in the TCB when - using __builtin_cpu_is()/__builtin_cpu_supports() in the static case. */ -#ifndef SHARED -weak_alias (__tcb_parse_hwcap_and_convert_at_platform, \ - __parse_hwcap_and_convert_at_platform); -#endif |