/* libunwind - a platform-independent unwind library
|
Copyright (C) 2003-2005 Hewlett-Packard Co
|
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
|
|
This file is part of libunwind.
|
|
Permission is hereby granted, free of charge, to any person obtaining
|
a copy of this software and associated documentation files (the
|
"Software"), to deal in the Software without restriction, including
|
without limitation the rights to use, copy, modify, merge, publish,
|
distribute, sublicense, and/or sell copies of the Software, and to
|
permit persons to whom the Software is furnished to do so, subject to
|
the following conditions:
|
|
The above copyright notice and this permission notice shall be
|
included in all copies or substantial portions of the Software.
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
#include <dlfcn.h>
|
#include <string.h>
|
#include <unistd.h>
|
|
#include "libunwind_i.h"
|
|
#include "elf64.h"
|
|
/* ANDROID support update. */
|
extern struct map_info *local_map_list;
|
HIDDEN define_lock(os_map_lock);
|
|
HIDDEN struct map_info *
|
maps_create_list (pid_t pid)
|
{
|
return NULL;
|
}
|
|
PROTECTED int
|
tdep_get_elf_image (unw_addr_space_t as, struct elf_image **ei,
|
pid_t pid, unw_word_t ip,
|
unsigned long *segbase, unsigned long *mapoff, char **path)
|
{
|
struct load_module_desc lmd;
|
const char *path;
|
|
if (pid != getpid ())
|
{
|
printf ("%s: remote case not implemented yet\n", __FUNCTION__);
|
return -UNW_ENOINFO;
|
}
|
|
/* First check to see if this ip is in our cache. */
|
map = map_find_from_addr(as->map_list, ip);
|
if (map)
|
goto finish;
|
|
/* Lock while we update the list. */
|
lock_acquire (&os_map_lock, saved_mask);
|
|
/* Check again if ip is in the map. */
|
map = map_find_from_addr(as->map_list, ip);
|
if (map)
|
goto release_lock;
|
|
/* Not in the cache, try and find the data. */
|
if (!dlmodinfo (ip, &lmd, sizeof (lmd), NULL, 0, 0))
|
goto release_lock;
|
|
path = dlgetname (&lmd, sizeof (lmd), NULL, 0, 0);
|
if (!path)
|
goto release_lock;
|
|
map = mempool_alloc (&map_pool);
|
if (!map)
|
goto release_lock;
|
|
map->start = lmd.text_base;
|
map->end = cur_map->start + lmd.text_size;
|
map->offset = 0; /* XXX fix me? */
|
map->flags = ;
|
map->path = strdup(path2);
|
mutex_init (&cur_map->ei_lock);
|
map->ei.size = 0;
|
map->ei.image = NULL;
|
map->ei_shared = 0;
|
Debug(1, "segbase=%lx, mapoff=%lx, path=%s\n", map->start, map->offset, map->path);
|
|
if (elf_map_cached_image (map, ip) < 0)
|
{
|
free(map);
|
map = NULL;
|
}
|
else
|
{
|
/* Add this element into list in descending order by start. */
|
struct map_info *map_list = as->map_list;
|
if (as->map_list == NULL || map->start > as->map_list->start)
|
{
|
map->next = as->map_list;
|
as->map_list = map;
|
}
|
else
|
{
|
while (map_list->next != NULL && map->start <= map_list->next->start)
|
map_list = map_list->next;
|
map->next = map_list->next;
|
map_list->next = map;
|
}
|
}
|
release_lock:
|
lock_release (&os_map_lock, saved_mask);
|
|
finish:
|
if (map)
|
{
|
*ei = &map->ei;
|
*segbase = map->start;
|
*mapoff = map->offset;
|
if (path != NULL)
|
{
|
*path = strdup (map->path);
|
}
|
}
|
return 0;
|
}
|
|
PROTECTED int
|
maps_is_local_readable(struct map_info *map_list, unw_word_t addr)
|
{
|
return 1;
|
}
|
|
PROTECTED int
|
maps_is_local_writable(struct map_info *map_list, unw_word_t addr)
|
{
|
return 1;
|
}
|
/* End of ANDROID update. */
|
