| /* power_features.c - POWER feature check |
| * Copyright (C) 2020 Matheus Castanho <msc@linux.ibm.com>, IBM |
| * Copyright (C) 2021-2022 Mika T. Lindqvist <postmaster@raasu.org> |
| * For conditions of distribution and use, see copyright notice in zlib.h |
| */ |
| |
| #ifdef HAVE_SYS_AUXV_H |
| # include <sys/auxv.h> |
| #endif |
| #ifdef __FreeBSD__ |
| # include <machine/cpu.h> |
| #endif |
| #include "../../zbuild.h" |
| #include "power_features.h" |
| |
| void Z_INTERNAL power_check_features(struct power_cpu_features *features) { |
| #ifdef PPC_FEATURES |
| unsigned long hwcap; |
| #ifdef __FreeBSD__ |
| elf_aux_info(AT_HWCAP, &hwcap, sizeof(hwcap)); |
| #else |
| hwcap = getauxval(AT_HWCAP); |
| #endif |
| |
| if (hwcap & PPC_FEATURE_HAS_ALTIVEC) |
| features->has_altivec = 1; |
| #endif |
| |
| #ifdef POWER_FEATURES |
| unsigned long hwcap2; |
| #ifdef __FreeBSD__ |
| elf_aux_info(AT_HWCAP2, &hwcap2, sizeof(hwcap2)); |
| #else |
| hwcap2 = getauxval(AT_HWCAP2); |
| #endif |
| |
| if (hwcap2 & PPC_FEATURE2_ARCH_2_07) |
| features->has_arch_2_07 = 1; |
| if (hwcap2 & PPC_FEATURE2_ARCH_3_00) |
| features->has_arch_3_00 = 1; |
| #endif |
| } |
