1  /* Machine-dependent ELF indirect relocation inline functions.
       2     SPARC 32-bit version.
       3     Copyright (C) 2010-2023 Free Software Foundation, Inc.
       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
       8     License as published by the Free Software Foundation; either
       9     version 2.1 of the 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  #ifndef _DL_IREL_H
      21  #define _DL_IREL_H
      22  
      23  #include <stdio.h>
      24  #include <unistd.h>
      25  #include <dl-plt.h>
      26  #include <ldsodefs.h>
      27  
      28  #define ELF_MACHINE_IRELA	1
      29  
      30  static inline Elf32_Addr
      31  __attribute ((always_inline))
      32  elf_ifunc_invoke (Elf32_Addr addr)
      33  {
      34    return ((Elf32_Addr (*) (int)) (addr)) (GLRO(dl_hwcap));
      35  }
      36  
      37  static inline void
      38  __attribute ((always_inline))
      39  elf_irela (const Elf32_Rela *reloc)
      40  {
      41    unsigned int r_type = ELF32_R_TYPE (reloc->r_info);
      42  
      43    if (__glibc_likely (r_type == R_SPARC_IRELATIVE))
      44      {
      45        Elf32_Addr *const reloc_addr = (void *) reloc->r_offset;
      46        Elf32_Addr value = elf_ifunc_invoke(reloc->r_addend);
      47        *reloc_addr = value;
      48      }
      49    else if (__glibc_likely (r_type == R_SPARC_JMP_IREL))
      50      {
      51        Elf32_Addr *const reloc_addr = (void *) reloc->r_offset;
      52        Elf32_Addr value = elf_ifunc_invoke(reloc->r_addend);
      53  
      54        sparc_fixup_plt (reloc, reloc_addr, value, 0, 1);
      55      }
      56    else if (r_type == R_SPARC_NONE)
      57      ;
      58    else
      59      __libc_fatal ("Unexpected reloc type in static binary.\n");
      60  }
      61  
      62  #endif /* dl-irel.h */