Branch data     Line data    Source code

       1                 :            : /* Return high PC attribute of DIE.
       2                 :            :    Copyright (C) 2003, 2005, 2012, 2018 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                 :            : #include <dwarf.h>
      34                 :            : #include "libdwP.h"
      35                 :            : 
      36                 :            : 
      37                 :            : int
      38                 :     628924 : dwarf_highpc (Dwarf_Die *die, Dwarf_Addr *return_addr)
      39                 :            : {
      40                 :     628924 :   Dwarf_Attribute attr_high_mem;
      41                 :     628924 :   Dwarf_Attribute *attr_high;
      42                 :            :   /* Split compile DIEs inherit high_pc from their skeleton DIE.  */
      43   [ +  +  +  + ]:     628924 :   if (is_cudie (die) && die->cu->unit_type == DW_UT_split_compile)
      44                 :         14 :     attr_high = INTUSE(dwarf_attr_integrate) (die, DW_AT_high_pc,
      45                 :            :                                               &attr_high_mem);
      46                 :            :   else
      47                 :     628910 :     attr_high = INTUSE(dwarf_attr) (die, DW_AT_high_pc, &attr_high_mem);
      48                 :            : 
      49         [ +  + ]:     628924 :   if (attr_high == NULL)
      50                 :     595585 :     goto no_addr;
      51                 :            : 
      52         [ +  + ]:      33339 :   if (INTUSE(dwarf_formaddr) (attr_high, return_addr) == 0)
      53                 :            :     return 0;
      54                 :            : 
      55                 :            :   /* DWARF 4 allows high_pc to be a constant offset from low_pc. */
      56         [ -  + ]:      32354 :   if (INTUSE(dwarf_lowpc) (die, return_addr) == 0)
      57                 :            :     {
      58                 :      32354 :       Dwarf_Word uval;
      59         [ +  - ]:      32354 :       if (INTUSE(dwarf_formudata) (attr_high, &uval) == 0)
      60                 :            :         {
      61                 :      32354 :           *return_addr += uval;
      62                 :      32354 :           return 0;
      63                 :            :         }
      64                 :            :     }
      65                 :            : 
      66                 :          0 : no_addr:
      67                 :     595585 :   __libdw_seterrno (DWARF_E_NO_ADDR);
      68                 :     595585 :   return -1;
      69                 :            : }
      70                 :            : INTDEF(dwarf_highpc)