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      1 /* libunwind - a platform-independent unwind library
      2    Copyright (C) 2001-2002, 2005 Hewlett-Packard Co
      3 	Contributed by David Mosberger-Tang <davidm (at) hpl.hp.com>
      4 
      5 This file is part of libunwind.
      6 
      7 Permission is hereby granted, free of charge, to any person obtaining
      8 a copy of this software and associated documentation files (the
      9 "Software"), to deal in the Software without restriction, including
     10 without limitation the rights to use, copy, modify, merge, publish,
     11 distribute, sublicense, and/or sell copies of the Software, and to
     12 permit persons to whom the Software is furnished to do so, subject to
     13 the following conditions:
     14 
     15 The above copyright notice and this permission notice shall be
     16 included in all copies or substantial portions of the Software.
     17 
     18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     19 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     20 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     21 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
     22 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     23 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
     24 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
     25 
     26 #include "libunwind_i.h"
     27 
     28 #ifdef UNW_REMOTE_ONLY
     29 
     30 static inline int
     31 local_find_proc_info (unw_addr_space_t as, unw_word_t ip, unw_proc_info_t *pi,
     32 		      int need_unwind_info, void *arg)
     33 {
     34   return -UNW_ENOINFO;
     35 }
     36 
     37 #else /* !UNW_REMOTE_ONLY */
     38 
     39 static inline int
     40 local_find_proc_info (unw_addr_space_t as, unw_word_t ip, unw_proc_info_t *pi,
     41 		      int need_unwind_info, void *arg)
     42 {
     43   unw_dyn_info_list_t *list;
     44   unw_dyn_info_t *di;
     45 
     46 #ifndef UNW_LOCAL_ONLY
     47 # pragma weak _U_dyn_info_list_addr
     48   if (!_U_dyn_info_list_addr)
     49     return -UNW_ENOINFO;
     50 #endif
     51 
     52   list = (unw_dyn_info_list_t *) (uintptr_t) _U_dyn_info_list_addr ();
     53   for (di = list->first; di; di = di->next)
     54     if (ip >= di->start_ip && ip < di->end_ip)
     55       return unwi_extract_dynamic_proc_info (as, ip, pi, di, need_unwind_info,
     56 					     arg);
     57   return -UNW_ENOINFO;
     58 }
     59 
     60 #endif /* !UNW_REMOTE_ONLY */
     61 
     62 #ifdef UNW_LOCAL_ONLY
     63 
     64 static inline int
     65 remote_find_proc_info (unw_addr_space_t as, unw_word_t ip, unw_proc_info_t *pi,
     66 		       int need_unwind_info, void *arg)
     67 {
     68   return -UNW_ENOINFO;
     69 }
     70 
     71 #else /* !UNW_LOCAL_ONLY */
     72 
     73 static inline int
     74 remote_find_proc_info (unw_addr_space_t as, unw_word_t ip, unw_proc_info_t *pi,
     75 		       int need_unwind_info, void *arg)
     76 {
     77   return unwi_dyn_remote_find_proc_info (as, ip, pi, need_unwind_info, arg);
     78 }
     79 
     80 #endif /* !UNW_LOCAL_ONLY */
     81 
     82 HIDDEN int
     83 unwi_find_dynamic_proc_info (unw_addr_space_t as, unw_word_t ip,
     84 			     unw_proc_info_t *pi, int need_unwind_info,
     85 			     void *arg)
     86 {
     87   if (as == unw_local_addr_space)
     88     return local_find_proc_info (as, ip, pi, need_unwind_info, arg);
     89   else
     90     return remote_find_proc_info (as, ip, pi, need_unwind_info, arg);
     91 }
     92