1 /* 2 ** Copyright 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 #define LOG_TAG "DEBUG" 18 19 #include <errno.h> 20 #include <stdint.h> 21 #include <sys/ptrace.h> 22 #include <string.h> 23 #include <sys/user.h> 24 25 #include <backtrace/Backtrace.h> 26 #include <log/log.h> 27 28 #include "machine.h" 29 #include "utility.h" 30 31 void dump_memory_and_code(log_t* log, Backtrace* backtrace) { 32 struct user_regs_struct r; 33 if (ptrace(PTRACE_GETREGS, backtrace->Tid(), 0, &r) == -1) { 34 ALOGE("cannot get registers: %s\n", strerror(errno)); 35 return; 36 } 37 38 dump_memory(log, backtrace, static_cast<uintptr_t>(r.rax), "memory near rax:"); 39 dump_memory(log, backtrace, static_cast<uintptr_t>(r.rbx), "memory near rbx:"); 40 dump_memory(log, backtrace, static_cast<uintptr_t>(r.rcx), "memory near rcx:"); 41 dump_memory(log, backtrace, static_cast<uintptr_t>(r.rdx), "memory near rdx:"); 42 dump_memory(log, backtrace, static_cast<uintptr_t>(r.rsi), "memory near rsi:"); 43 dump_memory(log, backtrace, static_cast<uintptr_t>(r.rdi), "memory near rdi:"); 44 45 dump_memory(log, backtrace, static_cast<uintptr_t>(r.rip), "code around rip:"); 46 } 47 48 void dump_registers(log_t* log, pid_t tid) { 49 struct user_regs_struct r; 50 if (ptrace(PTRACE_GETREGS, tid, 0, &r) == -1) { 51 ALOGE("cannot get registers: %s\n", strerror(errno)); 52 return; 53 } 54 55 _LOG(log, logtype::REGISTERS, " rax %016lx rbx %016lx rcx %016lx rdx %016lx\n", 56 r.rax, r.rbx, r.rcx, r.rdx); 57 _LOG(log, logtype::REGISTERS, " rsi %016lx rdi %016lx\n", 58 r.rsi, r.rdi); 59 _LOG(log, logtype::REGISTERS, " r8 %016lx r9 %016lx r10 %016lx r11 %016lx\n", 60 r.r8, r.r9, r.r10, r.r11); 61 _LOG(log, logtype::REGISTERS, " r12 %016lx r13 %016lx r14 %016lx r15 %016lx\n", 62 r.r12, r.r13, r.r14, r.r15); 63 _LOG(log, logtype::REGISTERS, " cs %016lx ss %016lx\n", 64 r.cs, r.ss); 65 _LOG(log, logtype::REGISTERS, " rip %016lx rbp %016lx rsp %016lx eflags %016lx\n", 66 r.rip, r.rbp, r.rsp, r.eflags); 67 } 68
