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/* dwarf.c
* Common DWARF parts
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <epan/tvbuff.h>
#include "dwarf.h"
gint
dissect_uleb128(tvbuff_t *tvb, gint offset, guint64 *value)
{
guint start_offset = offset;
guint shift = 0;
guint8 byte;
*value = 0;
do {
byte = tvb_get_guint8(tvb, offset);
offset += 1;
*value |= ((guint64)(byte & 0x7F) << shift);
shift += 7;
} while (byte & 0x80);
return offset - start_offset;
}
gint
dissect_leb128(tvbuff_t *tvb, gint offset, gint64 *value)
{
guint start_offset = offset;
guint shift = 0;
guint8 byte;
*value = 0;
do {
byte = tvb_get_guint8(tvb, offset);
offset += 1;
*value |= ((guint64)(byte & 0x7F) << shift);
shift += 7;
} while (byte & 0x80);
if (shift < 64 && byte & 0x40)
*value |= - ((gint64)1 << shift);
return offset - start_offset;
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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