mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-27 03:41:23 +08:00
f8d8b1b1e6
This prints some information from struct cpu_features, and the midr_el1 and dczid_el0 system register contents on every CPU. Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
85 lines
3.0 KiB
C
85 lines
3.0 KiB
C
/* 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);
|
|
}
|
|
}
|
|
}
|