blob: eac1cc0538aa916ca0e7e8293c444cc24274a06b [file] [log] [blame]
/* Return string associated with given attribute.
Copyright (C) 2003, 2004, 2005 Red Hat, Inc.
Written by Ulrich Drepper <drepper@redhat.com>, 2003.
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 <dwarf.h>
#include "libdwP.h"
const char *
dwarf_formstring (attrp)
Dwarf_Attribute *attrp;
{
/* Ignore earlier errors. */
if (attrp == NULL)
return NULL;
/* We found it. Now determine where the string is stored. */
if (attrp->form == DW_FORM_string)
/* A simple inlined string. */
return (const char *) attrp->valp;
Dwarf *dbg = attrp->cu->dbg;
if (unlikely (attrp->form != DW_FORM_strp)
|| dbg->sectiondata[IDX_debug_str] == NULL)
{
invalid_error:
__libdw_seterrno (DWARF_E_NO_STRING);
return NULL;
}
uint64_t off;
// XXX We need better boundary checks.
if (attrp->cu->offset_size == 8)
off = read_8ubyte_unaligned (dbg, attrp->valp);
else
off = read_4ubyte_unaligned (dbg, attrp->valp);
if (off >= dbg->sectiondata[IDX_debug_str]->d_size)
goto invalid_error;
return (const char *) dbg->sectiondata[IDX_debug_str]->d_buf + off;
}
INTDEF(dwarf_formstring)