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 #define DUMP_GP_REGISTERS(log, reg_prefix) \ 52 _LOG(log, logtype::REGISTERS, " r0 %08x r1 %08x r2 %08x r3 %08x\n", \ 53 static_cast<uint32_t>(reg_prefix##r0), static_cast<uint32_t>(reg_prefix##r1), \ 54 static_cast<uint32_t>(reg_prefix##r2), static_cast<uint32_t>(reg_prefix##r3)); \ 55 _LOG(log, logtype::REGISTERS, " r4 %08x r5 %08x r6 %08x r7 %08x\n", \ 56 static_cast<uint32_t>(reg_prefix##r4), static_cast<uint32_t>(reg_prefix##r5), \ 57 static_cast<uint32_t>(reg_prefix##r6), static_cast<uint32_t>(reg_prefix##r7)); \ 58 _LOG(log, logtype::REGISTERS, " r8 %08x r9 %08x sl %08x fp %08x\n", \ 59 static_cast<uint32_t>(reg_prefix##r8), static_cast<uint32_t>(reg_prefix##r9), \ 60 static_cast<uint32_t>(reg_prefix##r10), static_cast<uint32_t>(reg_prefix##fp)); \ 61 _LOG(log, logtype::REGISTERS, " ip %08x sp %08x lr %08x pc %08x cpsr %08x\n", \ 62 static_cast<uint32_t>(reg_prefix##ip), static_cast<uint32_t>(reg_prefix##sp), \ 63 static_cast<uint32_t>(reg_prefix##lr), static_cast<uint32_t>(reg_prefix##pc), \ 64 static_cast<uint32_t>(reg_prefix##cpsr)) 65 66 void dump_registers(log_t* log, pid_t tid) { 67 pt_regs r; 68 if (ptrace(PTRACE_GETREGS, tid, 0, &r)) { 69 ALOGE("cannot get registers: %s\n", strerror(errno)); 70 return; 71 } 72 73 DUMP_GP_REGISTERS(log, r.ARM_); 74 75 user_vfp vfp_regs; 76 if (ptrace(PTRACE_GETVFPREGS, tid, 0, &vfp_regs)) { 77 ALOGE("cannot get FP registers: %s\n", strerror(errno)); 78 return; 79 } 80 81 for (size_t i = 0; i < 32; i += 2) { 82 _LOG(log, logtype::FP_REGISTERS, " d%-2d %016llx d%-2d %016llx\n", 83 i, vfp_regs.fpregs[i], i+1, vfp_regs.fpregs[i+1]); 84 } 85 _LOG(log, logtype::FP_REGISTERS, " scr %08lx\n", vfp_regs.fpscr); 86 } 87 88 void dump_registers(log_t* log, const ucontext_t* uc) { 89 DUMP_GP_REGISTERS(log, uc->uc_mcontext.arm_); 90 } 91
