Line data    Source code

       1             : /* Initialization of S/390 specific backend library.
       2             :    Copyright (C) 2005, 2006, 2013 Red Hat, Inc.
       3             :    This file is part of elfutils.
       4             : 
       5             :    This file is free software; you can redistribute it and/or modify
       6             :    it under the terms of either
       7             : 
       8             :      * the GNU Lesser General Public License as published by the Free
       9             :        Software Foundation; either version 3 of the License, or (at
      10             :        your option) any later version
      11             : 
      12             :    or
      13             : 
      14             :      * the GNU General Public License as published by the Free
      15             :        Software Foundation; either version 2 of the License, or (at
      16             :        your option) any later version
      17             : 
      18             :    or both in parallel, as here.
      19             : 
      20             :    elfutils is distributed in the hope that it will be useful, but
      21             :    WITHOUT ANY WARRANTY; without even the implied warranty of
      22             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      23             :    General Public License for more details.
      24             : 
      25             :    You should have received copies of the GNU General Public License and
      26             :    the GNU Lesser General Public License along with this program.  If
      27             :    not, see <http://www.gnu.org/licenses/>.  */
      28             : 
      29             : #ifdef HAVE_CONFIG_H
      30             : # include <config.h>
      31             : #endif
      32             : 
      33             : #define BACKEND         s390_
      34             : #define RELOC_PREFIX    R_390_
      35             : #include "libebl_CPU.h"
      36             : 
      37             : /* This defines the common reloc hooks based on arm_reloc.def.  */
      38             : #include "common-reloc.c"
      39             : 
      40             : extern __typeof (s390_core_note) s390x_core_note;
      41             : 
      42             : 
      43             : Ebl *
      44          92 : s390_init (Elf *elf __attribute__ ((unused)),
      45             :            GElf_Half machine __attribute__ ((unused)),
      46             :            Ebl *eh)
      47             : {
      48             :   /* We handle it.  */
      49          92 :   s390_init_reloc (eh);
      50          92 :   HOOK (eh, reloc_simple_type);
      51          92 :   HOOK (eh, check_special_symbol);
      52          92 :   HOOK (eh, register_info);
      53          92 :   HOOK (eh, return_value_location);
      54          92 :   if (eh->class == ELFCLASS64)
      55          53 :     eh->core_note = s390x_core_note;
      56             :   else
      57          39 :     HOOK (eh, core_note);
      58          92 :   HOOK (eh, abi_cfi);
      59             :   /* gcc/config/ #define DWARF_FRAME_REGISTERS 34.
      60             :      But from the gcc/config/s390/s390.h "Register usage." comment it looks as
      61             :      if #32 (Argument pointer) and #33 (Condition code) are not used for
      62             :      unwinding.  */
      63          92 :   eh->frame_nregs = 32;
      64          92 :   HOOK (eh, set_initial_registers_tid);
      65          92 :   if (eh->class == ELFCLASS32)
      66          39 :     HOOK (eh, normalize_pc);
      67          92 :   HOOK (eh, unwind);
      68             : 
      69             :   /* Only the 64-bit format uses the incorrect hash table entry size.  */
      70          92 :   if (eh->class == ELFCLASS64)
      71          53 :     eh->sysvhash_entrysize = sizeof (Elf64_Xword);
      72             : 
      73          92 :   return eh;
      74             : }