1  /* AArch64 definitions for profiling support.
       2     Copyright (C) 1996-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  /* Accept 'frompc' address as argument from the function that calls
      20     __mcount for profiling.  Use  __builtin_return_address (0)
      21     for the 'selfpc' address.  */
      22  
      23  #include <sysdep.h>
      24  
      25  static void mcount_internal (u_long frompc, u_long selfpc);
      26  
      27  #define _MCOUNT_DECL(frompc, selfpc) \
      28  static inline void mcount_internal (u_long frompc, u_long selfpc)
      29  
      30  /* Note: strip_pac is needed for frompc because of gcc PR target/94791.  */
      31  #define MCOUNT                                                    \
      32  void __mcount (void *frompc)                                      \
      33  {                                                                 \
      34    mcount_internal ((u_long) strip_pac (frompc), (u_long) RETURN_ADDRESS (0)); \
      35  }