1  /* Function descriptors.  IA64 version.
       2     Copyright (C) 2003-2023 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  #ifndef dl_ia64_fptr_h
      20  #define dl_ia64_fptr_h 1
      21  
      22  #include <ia64intrin.h>
      23  #include <sysdeps/generic/dl-fptr.h>
      24  
      25  #define COMPARE_AND_SWAP(ptr, old, new)	\
      26    __sync_bool_compare_and_swap (ptr, old, new)
      27  
      28  /* There are currently 123 dynamic symbols in ld.so.
      29     ELF_MACHINE_BOOT_FPTR_TABLE_LEN needs to be at least that big.  */
      30  #define ELF_MACHINE_BOOT_FPTR_TABLE_LEN	200
      31  
      32  #define ELF_MACHINE_LOAD_ADDRESS(var, symbol)	\
      33    asm ("movl %0 = @gprel (" #symbol ");; add %0 = %0, gp" : "=&r" (var));
      34  
      35  /* We don't have a gcc helper to extract the plabel info.  */
      36  #define ELF_PTR_TO_FDESC(ptr) \
      37    ({ union { \
      38         void *_ptr; \
      39         struct fdesc *_fdesc; \
      40       } _u; \
      41       _u._ptr = ptr; \
      42       _u._fdesc; \
      43    })
      44  
      45  #endif /* !dl_ia64_fptr_h */