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/* Return file name containing definition of the given function.
Copyright (C) 2005 Red Hat, Inc.
Written by Ulrich Drepper <drepper@redhat.com>, 2005.
This program is Open Source software; you can redistribute it and/or
modify it under the terms of the Open Software License version 1.0 as
published by the Open Source Initiative.
You should have received a copy of the Open Software License along
with this program; if not, you may obtain a copy of the Open Software
License version 1.0 from http://www.opensource.org/licenses/osl.php or
by writing the Open Source Initiative c/o Lawrence Rosen, Esq.,
3001 King Ranch Road, Ukiah, CA 95482. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <assert.h>
#include <dwarf.h>
#include "libdwP.h"
const char *
dwarf_decl_file (Dwarf_Die *die)
{
Dwarf_Attribute attr_mem;
Dwarf_Sword idx = 0;
if (INTUSE(dwarf_formsdata) (INTUSE(dwarf_attr) (die, DW_AT_decl_file,
&attr_mem), &idx) != 0)
return NULL;
/* Zero means no source file information available. */
if (idx == 0)
{
__libdw_seterrno (DWARF_E_NO_ENTRY);
return NULL;
}
/* Get the array of source files for the CU. */
struct Dwarf_CU *cu = die->cu;
if (cu->lines == NULL)
{
Dwarf_Lines *lines;
size_t nlines;
/* Let the more generic function do the work. It'll create more
data but that will be needed in an real program anyway. */
(void) INTUSE(dwarf_getsrclines) (&CUDIE (cu), &lines, &nlines);
assert (cu->lines != NULL);
}
if (cu->lines == (void *) -1l)
{
/* If the file index is not zero, there must be file information
available. */
__libdw_seterrno (DWARF_E_INVALID_DWARF);
return NULL;
}
assert (cu->files != NULL && cu->files != (void *) -1l);
if (idx >= cu->files->nfiles)
{
__libdw_seterrno (DWARF_E_INVALID_DWARF);
return NULL;
}
return cu->files->info[idx].name;
}
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