1 /* 2 * 3 * Copyright 2006, The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 #define LOG_TAG "DEBUG" 19 20 #include <errno.h> 21 #include <stdint.h> 22 #include <string.h> 23 #include <sys/ptrace.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 pt_regs regs; 33 if (ptrace(PTRACE_GETREGS, backtrace->Tid(), 0, ®s)) { 34 ALOGE("cannot get registers: %s\n", strerror(errno)); 35 return; 36 } 37 38 static const char reg_names[] = "r0r1r2r3r4r5r6r7r8r9slfpipsp"; 39 40 for (int reg = 0; reg < 14; reg++) { 41 dump_memory(log, backtrace, regs.uregs[reg], "memory near %.2s:", ®_names[reg * 2]); 42 } 43 44 dump_memory(log, backtrace, static_cast<uintptr_t>(regs.ARM_pc), "code around pc:"); 45 46 if (regs.ARM_pc != regs.ARM_lr) { 47 dump_memory(log, backtrace, static_cast<uintptr_t>(regs.ARM_lr), "code around lr:"); 48 } 49 } 50 51 void dump_registers(log_t* log, pid_t tid) { 52 pt_regs r; 53 if (ptrace(PTRACE_GETREGS, tid, 0, &r)) { 54 ALOGE("cannot get registers: %s\n", strerror(errno)); 55 return; 56 } 57 58 _LOG(log, logtype::REGISTERS, " r0 %08x r1 %08x r2 %08x r3 %08x\n", 59 static_cast<uint32_t>(r.ARM_r0), static_cast<uint32_t>(r.ARM_r1), 60 static_cast<uint32_t>(r.ARM_r2), static_cast<uint32_t>(r.ARM_r3)); 61 _LOG(log, logtype::REGISTERS, " r4 %08x r5 %08x r6 %08x r7 %08x\n", 62 static_cast<uint32_t>(r.ARM_r4), static_cast<uint32_t>(r.ARM_r5), 63 static_cast<uint32_t>(r.ARM_r6), static_cast<uint32_t>(r.ARM_r7)); 64 _LOG(log, logtype::REGISTERS, " r8 %08x r9 %08x sl %08x fp %08x\n", 65 static_cast<uint32_t>(r.ARM_r8), static_cast<uint32_t>(r.ARM_r9), 66 static_cast<uint32_t>(r.ARM_r10), static_cast<uint32_t>(r.ARM_fp)); 67 _LOG(log, logtype::REGISTERS, " ip %08x sp %08x lr %08x pc %08x cpsr %08x\n", 68 static_cast<uint32_t>(r.ARM_ip), static_cast<uint32_t>(r.ARM_sp), 69 static_cast<uint32_t>(r.ARM_lr), static_cast<uint32_t>(r.ARM_pc), 70 static_cast<uint32_t>(r.ARM_cpsr)); 71 72 user_vfp vfp_regs; 73 if (ptrace(PTRACE_GETVFPREGS, tid, 0, &vfp_regs)) { 74 ALOGE("cannot get FP registers: %s\n", strerror(errno)); 75 return; 76 } 77 78 for (size_t i = 0; i < 32; i += 2) { 79 _LOG(log, logtype::FP_REGISTERS, " d%-2d %016llx d%-2d %016llx\n", 80 i, vfp_regs.fpregs[i], i+1, vfp_regs.fpregs[i+1]); 81 } 82 _LOG(log, logtype::FP_REGISTERS, " scr %08lx\n", vfp_regs.fpscr); 83 } 84
