sysdeps/unix/sysv/linux/riscv/hwprobe.c

   1 /* RISC-V hardware feature probing support on Linux
   2    Copyright (C) 2024 Free Software Foundation, Inc.
   3
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public License as
   8    published by the Free Software Foundation; either version 2.1 of the
   9    License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 #include <sys/syscall.h>
  21 #include <sys/hwprobe.h>
  22 #include <sysdep.h>
  23 #include <sysdep-vdso.h>
  24
  25 int __riscv_hwprobe (struct riscv_hwprobe *pairs, size_t pair_count,
  26                      size_t cpu_count, unsigned long int *cpus,
  27                      unsigned int flags)
  28 {
  29   int r;
  30
  31   r = INTERNAL_VSYSCALL (riscv_hwprobe, 5, pairs, pair_count,
  32                          cpu_count, cpus, flags);
  33
  34   /* Negate negative errno values to match pthreads API. */
  35   return -r;
  36 }