Line data    Source code

       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       10766 : dwarf_peeled_die_type (Dwarf_Die *die, Dwarf_Die *result)
      59             : {
      60       10766 :   Dwarf_Attribute attr_mem;
      61       10766 :   Dwarf_Attribute *attr = dwarf_attr_integrate (die, DW_AT_type, &attr_mem);
      62       10766 :   if (attr == NULL)
      63             :     /* The function has no return value, like a `void' function in C.  */
      64             :     return 0;
      65             : 
      66        8673 :   if (dwarf_formref_die (attr, result) == NULL)
      67             :     return -1;
      68             : 
      69        8673 :   if (dwarf_peel_type (result, result) != 0)
      70             :     return -1;
      71             : 
      72        8673 :   return DWARF_TAG_OR_RETURN (result);
      73             : }
      74             : 
      75             : #endif  /* libebl_CPU.h */