mirror of
https://github.com/MariaDB/server.git
synced 2025-01-16 20:12:31 +01:00
131 lines
3.2 KiB
C
131 lines
3.2 KiB
C
/* Copyright (C) 2011 Monty Program Ab
|
|
|
|
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; version 2 of the License.
|
|
|
|
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 St, Fifth Floor, Boston, MA 02110-1301 USA */
|
|
|
|
#include "mysys_priv.h"
|
|
#include <m_string.h>
|
|
#include <my_sys.h>
|
|
#include <my_stacktrace.h>
|
|
|
|
/**
|
|
strip the path, leave the file name and the last dirname
|
|
*/
|
|
static const char *strip_path(const char *s)
|
|
{
|
|
const char *prev, *last;
|
|
for(prev= last= s; *s; s++)
|
|
if (*s == '/' || *s == '\\')
|
|
{
|
|
prev= last;
|
|
last= s + 1;
|
|
}
|
|
return prev;
|
|
}
|
|
|
|
/*
|
|
The following is very much single-threaded code and it's only supposed
|
|
to be used on shutdown or for a crash report
|
|
Or the caller should take care and use mutexes.
|
|
|
|
Also it does not free any its memory. For the same reason -
|
|
it's only used for crash reports or on shutdown when we already
|
|
have a memory leak.
|
|
*/
|
|
|
|
#ifdef HAVE_BFD_H
|
|
#include <bfd.h>
|
|
static bfd *bfdh= 0;
|
|
static asymbol **symtable= 0;
|
|
|
|
/**
|
|
finds a file name, a line number, and a function name corresponding to addr.
|
|
|
|
the function name is demangled.
|
|
the file name is stripped of its path, only the two last components are kept
|
|
the resolving logic is mostly based on addr2line of binutils-2.17
|
|
|
|
@return 0 on success, 1 on failure
|
|
*/
|
|
int my_addr_resolve(void *ptr, my_addr_loc *loc)
|
|
{
|
|
bfd_vma addr= (intptr)ptr;
|
|
asection *sec;
|
|
|
|
for (sec= bfdh->sections; sec; sec= sec->next)
|
|
{
|
|
bfd_vma start;
|
|
|
|
if ((bfd_get_section_flags(bfdh, sec) & SEC_ALLOC) == 0)
|
|
continue;
|
|
|
|
start = bfd_get_section_vma(bfdh, sec);
|
|
if (addr < start || addr >= start + bfd_get_section_size(sec))
|
|
continue;
|
|
|
|
if (bfd_find_nearest_line(bfdh, sec, symtable, addr - start,
|
|
&loc->file, &loc->func, &loc->line))
|
|
{
|
|
if (loc->file)
|
|
loc->file= strip_path(loc->file);
|
|
else
|
|
loc->file= "";
|
|
|
|
if (loc->func)
|
|
{
|
|
const char *str= bfd_demangle(bfdh, loc->func, 3);
|
|
if (str)
|
|
loc->func= str;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
const char *my_addr_resolve_init()
|
|
{
|
|
if (!bfdh)
|
|
{
|
|
uint unused;
|
|
char **matching;
|
|
|
|
bfdh= bfd_openr(my_progname, NULL);
|
|
if (!bfdh)
|
|
goto err;
|
|
|
|
if (bfd_check_format(bfdh, bfd_archive))
|
|
goto err;
|
|
if (!bfd_check_format_matches (bfdh, bfd_object, &matching))
|
|
goto err;
|
|
|
|
if (bfd_read_minisymbols(bfdh, FALSE, (void *)&symtable, &unused) < 0)
|
|
goto err;
|
|
}
|
|
return 0;
|
|
|
|
err:
|
|
return bfd_errmsg(bfd_get_error());
|
|
}
|
|
#elif defined(HAVE_LIBELF_H)
|
|
/*
|
|
another possible implementation.
|
|
*/
|
|
#elif defined(MY_ADDR_RESOLVE_FORK)
|
|
/*
|
|
yet another - just execute addr2line or eu-addr2line, whatever available,
|
|
pipe the addresses to it, and parse the output
|
|
*/
|
|
#endif
|