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/* power_features.c - POWER feature check
* Copyright (C) 2020 Matheus Castanho <msc@linux.ibm.com>, IBM
* Copyright (C) 2021-2024 Mika T. Lindqvist <postmaster@raasu.org>
* For conditions of distribution and use, see copyright notice in zlib.h
*/
#if defined(PPC_FEATURES) || defined(POWER_FEATURES)
#include "zbuild.h"
#include "power_features.h"
#ifdef HAVE_SYS_AUXV_H
# include <sys/auxv.h>
#endif
#ifdef POWER_NEED_AUXVEC_H
# include <linux/auxvec.h>
#endif
#ifdef __FreeBSD__
# include <machine/cpu.h>
#endif
void Z_INTERNAL power_check_features(struct power_cpu_features *features) {
#ifdef PPC_FEATURES
unsigned long hwcap;
#if defined(__FreeBSD__) || defined(__OpenBSD__)
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;
#if defined(__FreeBSD__) || defined(__OpenBSD__)
elf_aux_info(AT_HWCAP2, &hwcap2, sizeof(hwcap2));
#else
hwcap2 = getauxval(AT_HWCAP2);
#endif
#ifdef POWER8_VSX
if (hwcap2 & PPC_FEATURE2_ARCH_2_07)
features->has_arch_2_07 = 1;
#endif
#ifdef POWER9
if (hwcap2 & PPC_FEATURE2_ARCH_3_00)
features->has_arch_3_00 = 1;
#endif
#endif
}
#endif
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