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