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Diffstat (limited to 'gdb/lk-lists.h')
-rw-r--r-- | gdb/lk-lists.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/gdb/lk-lists.h b/gdb/lk-lists.h new file mode 100644 index 0000000000..f9c2a856e9 --- /dev/null +++ b/gdb/lk-lists.h @@ -0,0 +1,56 @@ +/* Iterators for internal data structures of the Linux kernel. + + Copyright (C) 2016 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/>. */ + +#ifndef __LK_LISTS_H__ +#define __LK_LISTS_H__ + +extern CORE_ADDR lk_list_head_next (CORE_ADDR curr, const char *sname, + const char *fname); + +/* Iterator over field SNAME->FNAME of type struct list_head starting at + address START of type struct list_head. This iterator is intended to be + used for lists initiated with macro LIST_HEAD (include/linux/list.h) in + the kernel, i.e. lists that START is a global variable of type struct + list_head and _not_ of type struct SNAME as the rest of the list. Thus + START will not be iterated over but only be used to start/terminate the + iteration. */ + +#define lk_list_for_each(next, start, sname, fname) \ + for ((next) = lk_list_head_next ((start), #sname, #fname); \ + (next) != (start); \ + (next) = lk_list_head_next ((next), #sname, #fname)) + +/* Iterator over struct SNAME linked together via field SNAME->FNAME of type + struct list_head starting at address START of type struct SNAME. In + contrast to the iterator above, START is a "full" member of the list and + thus will be iterated over. */ + +#define lk_list_for_each_container(cont, start, sname, fname) \ + CORE_ADDR _next; \ + bool _first_loop = true; \ + for ((cont) = (start), \ + _next = (start) + LK_OFFSET (sname, fname); \ + \ + (cont) != (start) || _first_loop; \ + \ + _next = lk_list_head_next (_next, #sname, #fname), \ + (cont) = LK_CONTAINER_OF (_next, sname, fname), \ + _first_loop = false) + +#endif /* __LK_LISTS_H__ */ |