1 /* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <signal.h> 18 #include <stdio.h> 19 #include <unistd.h> 20 21 #include <memory> 22 #include <vector> 23 24 #include <unwindstack/Regs.h> 25 #include <unwindstack/RegsGetLocal.h> 26 27 #include "backtrace_testlib.h" 28 29 void test_loop_forever() { 30 while (1) 31 ; 32 } 33 34 void test_signal_handler(int) { test_loop_forever(); } 35 36 void test_signal_action(int, siginfo_t*, void*) { test_loop_forever(); } 37 38 int test_level_four(int one, int two, int three, int four, void (*callback_func)(void*), 39 void* data) { 40 if (callback_func != NULL) { 41 callback_func(data); 42 } else { 43 while (1) 44 ; 45 } 46 return one + two + three + four; 47 } 48 49 int test_level_three(int one, int two, int three, int four, void (*callback_func)(void*), 50 void* data) { 51 return test_level_four(one + 3, two + 6, three + 9, four + 12, callback_func, data) + 3; 52 } 53 54 int test_level_two(int one, int two, int three, int four, void (*callback_func)(void*), void* data) { 55 return test_level_three(one + 2, two + 4, three + 6, four + 8, callback_func, data) + 2; 56 } 57 58 int test_level_one(int one, int two, int three, int four, void (*callback_func)(void*), void* data) { 59 return test_level_two(one + 1, two + 2, three + 3, four + 4, callback_func, data) + 1; 60 } 61 62 int test_recursive_call(int level, void (*callback_func)(void*), void* data) { 63 if (level > 0) { 64 return test_recursive_call(level - 1, callback_func, data) + level; 65 } else if (callback_func != NULL) { 66 callback_func(data); 67 } else { 68 while (1) { 69 } 70 } 71 return 0; 72 } 73 74 typedef struct { 75 std::vector<uint8_t>* ucontext; 76 volatile int* exit_flag; 77 } GetContextArg; 78 79 static void GetContextAndExit(void* data) { 80 GetContextArg* arg = reinterpret_cast<GetContextArg*>(data); 81 82 std::unique_ptr<unwindstack::Regs> regs(unwindstack::Regs::CreateFromLocal()); 83 unwindstack::RegsGetLocal(regs.get()); 84 85 ucontext_t ucontext; 86 memset(&ucontext, 0, sizeof(ucontext)); 87 #if defined(__arm__) 88 memcpy(&ucontext.uc_mcontext, regs->RawData(), sizeof(uint32_t) * 16); 89 #elif defined(__aarch64__) 90 memcpy(&ucontext.uc_mcontext, regs->RawData(), sizeof(uint64_t) * 33); 91 #elif defined(__i386__) 92 uint32_t* reg_data = reinterpret_cast<uint32_t*>(regs->RawData()); 93 ucontext.uc_mcontext.gregs[0] = reg_data[15]; 94 ucontext.uc_mcontext.gregs[1] = reg_data[14]; 95 ucontext.uc_mcontext.gregs[2] = reg_data[13]; 96 ucontext.uc_mcontext.gregs[3] = reg_data[12]; 97 ucontext.uc_mcontext.gregs[4] = reg_data[7]; 98 ucontext.uc_mcontext.gregs[5] = reg_data[6]; 99 ucontext.uc_mcontext.gregs[6] = reg_data[5]; 100 ucontext.uc_mcontext.gregs[7] = reg_data[4]; 101 ucontext.uc_mcontext.gregs[8] = reg_data[3]; 102 ucontext.uc_mcontext.gregs[9] = reg_data[2]; 103 ucontext.uc_mcontext.gregs[10] = reg_data[1]; 104 ucontext.uc_mcontext.gregs[11] = reg_data[0]; 105 ucontext.uc_mcontext.gregs[14] = reg_data[8]; 106 ucontext.uc_mcontext.gregs[15] = reg_data[10]; 107 #elif defined(__x86_64__) 108 uint64_t* reg_data = reinterpret_cast<uint64_t*>(regs->RawData()); 109 ucontext.uc_mcontext.gregs[0] = reg_data[8]; 110 ucontext.uc_mcontext.gregs[1] = reg_data[9]; 111 ucontext.uc_mcontext.gregs[2] = reg_data[10]; 112 ucontext.uc_mcontext.gregs[3] = reg_data[11]; 113 ucontext.uc_mcontext.gregs[4] = reg_data[12]; 114 ucontext.uc_mcontext.gregs[5] = reg_data[13]; 115 ucontext.uc_mcontext.gregs[6] = reg_data[14]; 116 ucontext.uc_mcontext.gregs[7] = reg_data[15]; 117 ucontext.uc_mcontext.gregs[8] = reg_data[5]; 118 ucontext.uc_mcontext.gregs[9] = reg_data[4]; 119 ucontext.uc_mcontext.gregs[10] = reg_data[6]; 120 ucontext.uc_mcontext.gregs[11] = reg_data[3]; 121 ucontext.uc_mcontext.gregs[12] = reg_data[1]; 122 ucontext.uc_mcontext.gregs[13] = reg_data[0]; 123 ucontext.uc_mcontext.gregs[14] = reg_data[2]; 124 ucontext.uc_mcontext.gregs[15] = reg_data[7]; 125 ucontext.uc_mcontext.gregs[16] = reg_data[16]; 126 #endif 127 128 arg->ucontext->resize(sizeof(ucontext)); 129 memcpy(arg->ucontext->data(), &ucontext, sizeof(ucontext)); 130 131 // Don't touch the stack anymore. 132 while (*arg->exit_flag == 0) { 133 } 134 } 135 136 void test_get_context_and_wait(void* ucontext, volatile int* exit_flag) { 137 GetContextArg arg; 138 arg.ucontext = reinterpret_cast<std::vector<uint8_t>*>(ucontext); 139 arg.exit_flag = exit_flag; 140 test_level_one(1, 2, 3, 4, GetContextAndExit, &arg); 141 } 142
