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71 lines
2.0 KiB
71 lines
2.0 KiB
/* Return high PC attribute of DIE.
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Copyright (C) 2003, 2005, 2012, 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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int
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dwarf_highpc (Dwarf_Die *die, Dwarf_Addr *return_addr)
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{
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Dwarf_Attribute attr_high_mem;
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Dwarf_Attribute *attr_high;
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/* Split compile DIEs inherit high_pc from their skeleton DIE. */
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if (is_cudie (die) && die->cu->unit_type == DW_UT_split_compile)
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attr_high = INTUSE(dwarf_attr_integrate) (die, DW_AT_high_pc,
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&attr_high_mem);
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else
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attr_high = INTUSE(dwarf_attr) (die, DW_AT_high_pc, &attr_high_mem);
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if (attr_high == NULL)
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goto no_addr;
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if (INTUSE(dwarf_formaddr) (attr_high, return_addr) == 0)
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return 0;
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/* DWARF 4 allows high_pc to be a constant offset from low_pc. */
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if (INTUSE(dwarf_lowpc) (die, return_addr) == 0)
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{
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Dwarf_Word uval;
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if (INTUSE(dwarf_formudata) (attr_high, &uval) == 0)
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{
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*return_addr += uval;
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return 0;
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}
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}
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no_addr:
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__libdw_seterrno (DWARF_E_NO_ADDR);
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return -1;
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}
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INTDEF(dwarf_highpc)
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