57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
|
/* Things needed for both reading and writing DWARF indices.
|
||
|
|
||
|
Copyright (C) 1994-2018 Free Software Foundation, Inc.
|
||
|
|
||
|
This file is part of GDB.
|
||
|
|
||
|
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 3 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, see <http://www.gnu.org/licenses/>. */
|
||
|
|
||
|
#include "defs.h"
|
||
|
#include "dwarf-index-common.h"
|
||
|
|
||
|
/* See dwarf-index-common.h. */
|
||
|
|
||
|
hashval_t
|
||
|
mapped_index_string_hash (int index_version, const void *p)
|
||
|
{
|
||
|
const unsigned char *str = (const unsigned char *) p;
|
||
|
hashval_t r = 0;
|
||
|
unsigned char c;
|
||
|
|
||
|
while ((c = *str++) != 0)
|
||
|
{
|
||
|
if (index_version >= 5)
|
||
|
c = tolower (c);
|
||
|
r = r * 67 + c - 113;
|
||
|
}
|
||
|
|
||
|
return r;
|
||
|
}
|
||
|
|
||
|
/* See dwarf-index-common.h. */
|
||
|
|
||
|
uint32_t
|
||
|
dwarf5_djb_hash (const char *str_)
|
||
|
{
|
||
|
const unsigned char *str = (const unsigned char *) str_;
|
||
|
|
||
|
/* Note: tolower here ignores UTF-8, which isn't fully compliant.
|
||
|
See http://dwarfstd.org/ShowIssue.php?issue=161027.1. */
|
||
|
|
||
|
uint32_t hash = 5381;
|
||
|
while (int c = *str++)
|
||
|
hash = hash * 33 + tolower (c);
|
||
|
return hash;
|
||
|
}
|