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73 lines
2.2 KiB
73 lines
2.2 KiB
/* Return specific DWARF attribute of a DIE, integrating indirections. |
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Copyright (C) 2005, 2018 Red Hat, Inc. |
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This file is part of elfutils. |
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This file is free software; you can redistribute it and/or modify |
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it under the terms of either |
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* the GNU Lesser General Public License as published by the Free |
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Software Foundation; either version 3 of the License, or (at |
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your option) any later version |
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or |
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* the GNU General Public License as published by the Free |
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Software Foundation; either version 2 of the License, or (at |
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your option) any later version |
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or both in parallel, as here. |
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elfutils is distributed in the hope that it will be useful, but |
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WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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General Public License for more details. |
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You should have received copies of the GNU General Public License and |
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the GNU Lesser General Public License along with this program. If |
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not, see <http://www.gnu.org/licenses/>. */ |
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#ifdef HAVE_CONFIG_H |
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# include <config.h> |
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#endif |
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#include <dwarf.h> |
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#include "libdwP.h" |
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Dwarf_Attribute * |
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dwarf_attr_integrate (Dwarf_Die *die, unsigned int search_name, |
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Dwarf_Attribute *result) |
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{ |
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Dwarf_Die die_mem; |
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int chain = 16; /* Largest DIE ref chain we will follow. */ |
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do |
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{ |
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Dwarf_Attribute *attr = INTUSE(dwarf_attr) (die, search_name, result); |
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if (attr != NULL) |
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return attr; |
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attr = INTUSE(dwarf_attr) (die, DW_AT_abstract_origin, result); |
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if (attr == NULL) |
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attr = INTUSE(dwarf_attr) (die, DW_AT_specification, result); |
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if (attr == NULL) |
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break; |
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die = INTUSE(dwarf_formref_die) (attr, &die_mem); |
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} |
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while (die != NULL && chain-- != 0); |
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/* Not NULL if it didn't have abstract_origin and specification |
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attributes. If it is a split CU then see if the skeleton |
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has it. */ |
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if (die != NULL && is_cudie (die) |
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&& die->cu->unit_type == DW_UT_split_compile) |
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{ |
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Dwarf_CU *skel_cu = __libdw_find_split_unit (die->cu); |
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if (skel_cu != NULL) |
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{ |
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Dwarf_Die skel_die = CUDIE (skel_cu); |
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return INTUSE(dwarf_attr) (&skel_die, search_name, result); |
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} |
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} |
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return NULL; |
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} |
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INTDEF (dwarf_attr_integrate)
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