| /* Return backtrace of current program state. |
| Copyright (C) 2008 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by David S. Miller <davem@davemloft.net> |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Library General Public License as |
| published by the Free Software Foundation; either version 2 of the |
| License, or (at your option) any later version. |
| |
| The GNU C Library 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 |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Library General Public |
| License along with the GNU C Library; see the file COPYING.LIB. If not, |
| write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #include <execinfo.h> |
| #include <stddef.h> |
| #include <bp-checks.h> |
| #include <sysdep.h> |
| |
| struct layout |
| { |
| unsigned long locals[8]; |
| unsigned long ins[6]; |
| unsigned long next; |
| void *__unbounded return_address; |
| }; |
| |
| int |
| __backtrace (void **array, int size) |
| { |
| struct layout *current; |
| unsigned long fp; |
| int count; |
| |
| asm volatile ("flushw"); |
| asm volatile ("mov %%fp, %0" : "=r"(fp)); |
| current = (struct layout *__unbounded) (fp + STACK_BIAS); |
| current = BOUNDED_1 (current); |
| |
| for (count = 0; count < size; count++) |
| { |
| array[count] = current->return_address; |
| if (!current->next) |
| break; |
| current = (struct layout *__unbounded) (current->next + STACK_BIAS); |
| current = BOUNDED_1 (current); |
| } |
| |
| return count; |
| } |
| weak_alias (__backtrace, backtrace) |
| libc_hidden_def (__backtrace) |