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       1                 :            : /* Common interface for libebl modules.
       2                 :            :    Copyright (C) 2000, 2001, 2002, 2003, 2005, 2013, 2014 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                 :            : #ifndef _LIBEBL_CPU_H
      30                 :            : #define _LIBEBL_CPU_H 1
      31                 :            : 
      32                 :            : #include <dwarf.h>
      33                 :            : #include <libeblP.h>
      34                 :            : 
      35                 :            : #define EBLHOOK(name)   EBLHOOK_1(BACKEND, name)
      36                 :            : #define EBLHOOK_1(a, b) EBLHOOK_2(a, b)
      37                 :            : #define EBLHOOK_2(a, b) a##b
      38                 :            : 
      39                 :            : /* Constructor.  */
      40                 :            : extern Ebl *EBLHOOK(init) (Elf *elf, GElf_Half machine, Ebl *eh);
      41                 :            : 
      42                 :            : #include "ebl-hooks.h"
      43                 :            : 
      44                 :            : #define HOOK(eh, name)  eh->name = EBLHOOK(name)
      45                 :            : 
      46                 :            : extern bool (*generic_debugscn_p) (const char *) attribute_hidden;
      47                 :            : 
      48                 :            : /* Helper for retval.  Return dwarf_tag (die), but calls return -1
      49                 :            :    if there where previous errors that leave die NULL.  */
      50                 :            : #define DWARF_TAG_OR_RETURN(die)  \
      51                 :            :   ({ Dwarf_Die *_die = (die);     \
      52                 :            :      if (_die == NULL) return -1; \
      53                 :            :      dwarf_tag (_die); })
      54                 :            : 
      55                 :            : /* Get a type die corresponding to DIE.  Peel CV qualifiers off
      56                 :            :    it.  */
      57                 :            : static inline int
      58                 :      11378 : dwarf_peeled_die_type (Dwarf_Die *die, Dwarf_Die *result)
      59                 :            : {
      60                 :      11378 :   Dwarf_Attribute attr_mem;
      61                 :      11378 :   Dwarf_Attribute *attr = dwarf_attr_integrate (die, DW_AT_type, &attr_mem);
      62         [ +  + ]:      11378 :   if (attr == NULL)
      63                 :            :     /* The function has no return value, like a `void' function in C.  */
      64                 :            :     return 0;
      65                 :            : 
      66         [ +  - ]:       8954 :   if (dwarf_formref_die (attr, result) == NULL)
      67                 :            :     return -1;
      68                 :            : 
      69         [ +  - ]:       8954 :   if (dwarf_peel_type (result, result) != 0)
      70                 :            :     return -1;
      71                 :            : 
      72                 :       8954 :   return DWARF_TAG_OR_RETURN (result);
      73                 :            : }
      74                 :            : 
      75                 :            : #endif  /* libebl_CPU.h */