98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
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/**************************************************************************
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*
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* Copyright 2009 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/**
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* @file
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* Stack backtracing.
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*
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* @author Jose Fonseca <jfonseca@vmware.com>
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*/
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#include "u_debug.h"
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#include "u_debug_stack.h"
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void
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debug_backtrace_capture(struct debug_stack_frame *backtrace,
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unsigned start_frame,
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unsigned nr_frames)
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{
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const void **frame_pointer = NULL;
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unsigned i = 0;
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if(!nr_frames)
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return;
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#if defined(PIPE_CC_GCC)
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frame_pointer = ((const void **)__builtin_frame_address(1));
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#elif defined(PIPE_CC_MSVC)
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__asm {
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mov frame_pointer, ebp
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}
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frame_pointer = (const void **)frame_pointer[0];
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#else
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frame_pointer = NULL;
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#endif
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#ifdef PIPE_ARCH_X86
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while(nr_frames) {
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if(!frame_pointer)
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break;
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if(start_frame)
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--start_frame;
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else {
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backtrace[i++].function = frame_pointer[1];
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--nr_frames;
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}
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frame_pointer = (const void **)frame_pointer[0];
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}
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#endif
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while(nr_frames) {
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backtrace[i++].function = NULL;
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--nr_frames;
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}
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}
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void
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debug_backtrace_dump(const struct debug_stack_frame *backtrace,
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unsigned nr_frames)
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{
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unsigned i;
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for(i = 0; i < nr_frames; ++i) {
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if(!backtrace[i].function)
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break;
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debug_printf("\t%p\n", backtrace[i].function);
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}
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}
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