1501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown/* 2501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * Copyright (C) 2011 The Android Open Source Project 3501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * 4501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * Licensed under the Apache License, Version 2.0 (the "License"); 5501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * you may not use this file except in compliance with the License. 6501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * You may obtain a copy of the License at 7501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * 8501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * http://www.apache.org/licenses/LICENSE-2.0 9501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * 10501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * Unless required by applicable law or agreed to in writing, software 11501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * distributed under the License is distributed on an "AS IS" BASIS, 12501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * See the License for the specific language governing permissions and 14501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * limitations under the License. 15501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown */ 16501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 17501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown#define LOG_TAG "Corkscrew" 18501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown//#define LOG_NDEBUG 0 19501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 20501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown#include "backtrace-helper.h" 21501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 22501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown#include <cutils/log.h> 23501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 24501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brownbacktrace_frame_t* add_backtrace_entry(uintptr_t pc, backtrace_frame_t* backtrace, 25501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown size_t ignore_depth, size_t max_depth, 26501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown size_t* ignored_frames, size_t* returned_frames) { 27501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (*ignored_frames < ignore_depth) { 28501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown *ignored_frames += 1; 29501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown return NULL; 30501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 31501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (*returned_frames >= max_depth) { 32501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown return NULL; 33501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 34501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown backtrace_frame_t* frame = &backtrace[*returned_frames]; 35501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown frame->absolute_pc = pc; 36501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown frame->stack_top = 0; 37501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown frame->stack_size = 0; 38501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown *returned_frames += 1; 39501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown return frame; 40501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown} 41