diff options
Diffstat (limited to 'debug/backtrace.c')
| -rw-r--r-- | debug/backtrace.c | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/debug/backtrace.c b/debug/backtrace.c deleted file mode 100644 index f2d52372d5..0000000000 --- a/debug/backtrace.c +++ /dev/null @@ -1,94 +0,0 @@ -/* Return backtrace of current program state. Generic version. - Copyright (C) 1998, 2000, 2002, 2004, 2005 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <execinfo.h> -#include <signal.h> -#include <frame.h> -#include <sigcontextinfo.h> -#include <bp-checks.h> -#include <ldsodefs.h> - -/* This implementation assumes a stack layout that matches the defaults - used by gcc's `__builtin_frame_address' and `__builtin_return_address' - (FP is the frame pointer register): - - +-----------------+ +-----------------+ - FP -> | previous FP --------> | previous FP ------>... - | | | | - | return address | | return address | - +-----------------+ +-----------------+ - - */ - -/* Get some notion of the current stack. Need not be exactly the top - of the stack, just something somewhere in the current frame. */ -#ifndef CURRENT_STACK_FRAME -# define CURRENT_STACK_FRAME ({ char __csf; &__csf; }) -#endif - -/* By default we assume that the stack grows downward. */ -#ifndef INNER_THAN -# define INNER_THAN < -#endif - -/* By default assume the `next' pointer in struct layout points to the - next struct layout. */ -#ifndef ADVANCE_STACK_FRAME -# define ADVANCE_STACK_FRAME(next) BOUNDED_1 ((struct layout *) (next)) -#endif - -/* By default, the frame pointer is just what we get from gcc. */ -#ifndef FIRST_FRAME_POINTER -# define FIRST_FRAME_POINTER __builtin_frame_address (0) -#endif - -int -__backtrace (array, size) - void **array; - int size; -{ - struct layout *current; - void *__unbounded top_frame; - void *__unbounded top_stack; - int cnt = 0; - - top_frame = FIRST_FRAME_POINTER; - top_stack = CURRENT_STACK_FRAME; - - /* We skip the call to this function, it makes no sense to record it. */ - current = BOUNDED_1 ((struct layout *) top_frame); - while (cnt < size) - { - if ((void *) current INNER_THAN top_stack - || !((void *) current INNER_THAN __libc_stack_end)) - /* This means the address is out of range. Note that for the - toplevel we see a frame pointer with value NULL which clearly is - out of range. */ - break; - - array[cnt++] = current->return_address; - - current = ADVANCE_STACK_FRAME (current->next); - } - - return cnt; -} -weak_alias (__backtrace, backtrace) -libc_hidden_def (__backtrace) |