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/* Print CPU diagnostics data in ld.so. AArch64 version.
Copyright (C) 2021-2024 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
<https://www.gnu.org/licenses/>. */
#include <dl-diagnostics.h>
#include <cpu-features.h>
#include <dl-iterate_cpu.h>
#include <ldsodefs.h>
#include <sys/auxv.h>
static void
print_cpu_features_value (const char *label, uint64_t value)
{
_dl_printf ("aarch64.cpu_features.");
_dl_diagnostics_print_labeled_value (label, value);
}
static void
print_per_cpu_value (const struct dl_iterate_cpu *dic,
const char *label, uint64_t value)
{
_dl_printf ("aarch64.processor[0x%x].", dic->processor_index);
_dl_diagnostics_print_labeled_value (label, value);
}
void
_dl_diagnostics_cpu (void)
{
print_cpu_features_value ("bti", GLRO (dl_aarch64_cpu_features).bti);
print_cpu_features_value ("midr_el1",
GLRO (dl_aarch64_cpu_features).midr_el1);
print_cpu_features_value ("mops", GLRO (dl_aarch64_cpu_features).mops);
print_cpu_features_value ("mte_state",
GLRO (dl_aarch64_cpu_features).mte_state);
print_cpu_features_value ("prefer_sve_ifuncs",
GLRO (dl_aarch64_cpu_features).prefer_sve_ifuncs);
print_cpu_features_value ("sve", GLRO (dl_aarch64_cpu_features).sve);
print_cpu_features_value ("zva_size",
GLRO (dl_aarch64_cpu_features).zva_size);
struct dl_iterate_cpu dic;
_dl_iterate_cpu_init (&dic);
while (_dl_iterate_cpu_next (&dic))
{
if (dic.requested_cpu >= 0)
_dl_printf ("aarch64.processor[0x%x].requested=0x%x\n",
dic.processor_index, dic.requested_cpu);
if (dic.actual_cpu >= 0)
_dl_printf ("aarch64.processor[0x%x].observed=0x%x\n",
dic.processor_index, dic.actual_cpu);
if (dic.actual_node >= 0)
_dl_printf ("aarch64.processor[0x%x].observed_node=0x%x\n",
dic.processor_index, dic.actual_node);
if (GLRO (dl_hwcap) & HWCAP_CPUID)
{
uint64_t midr_el1;
asm ("mrs %0, midr_el1" : "=r" (midr_el1));
print_per_cpu_value (&dic, "midr_el1", midr_el1);
}
{
uint64_t dczid_el0;
asm ("mrs %0, dczid_el0" : "=r" (dczid_el0));
print_per_cpu_value (&dic, "dczid_el0", dczid_el0);
}
}
}
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