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 #include <errno.h> 19 #include <stddef.h> 20 #include <stdio.h> 21 #include <stdlib.h> 22 #include <string.h> 23 #include <sys/ptrace.h> 24 #include <sys/types.h> 25 #include <sys/user.h> 26 27 #include "../utility.h" 28 #include "../machine.h" 29 30 void dump_memory_and_code(log_t* log, pid_t tid) { 31 pt_regs regs; 32 if (ptrace(PTRACE_GETREGS, tid, 0, ®s)) { 33 return; 34 } 35 36 static const char REG_NAMES[] = "r0r1r2r3r4r5r6r7r8r9slfpipsp"; 37 38 for (int reg = 0; reg < 14; reg++) { 39 // this may not be a valid way to access, but it'll do for now 40 uintptr_t addr = regs.uregs[reg]; 41 42 // Don't bother if it looks like a small int or ~= null, or if 43 // it's in the kernel area. 44 if (addr < 4096 || addr >= 0xc0000000) { 45 continue; 46 } 47 48 _LOG(log, logtype::MEMORY, "\nmemory near %.2s:\n", ®_NAMES[reg * 2]); 49 dump_memory(log, tid, addr); 50 } 51 52 // explicitly allow upload of code dump logging 53 _LOG(log, logtype::MEMORY, "\ncode around pc:\n"); 54 dump_memory(log, tid, static_cast<uintptr_t>(regs.ARM_pc)); 55 56 if (regs.ARM_pc != regs.ARM_lr) { 57 _LOG(log, logtype::MEMORY, "\ncode around lr:\n"); 58 dump_memory(log, tid, static_cast<uintptr_t>(regs.ARM_lr)); 59 } 60 } 61 62 void dump_registers(log_t* log, pid_t tid) { 63 pt_regs r; 64 if (ptrace(PTRACE_GETREGS, tid, 0, &r)) { 65 _LOG(log, logtype::REGISTERS, "cannot get registers: %s\n", strerror(errno)); 66 return; 67 } 68 69 _LOG(log, logtype::REGISTERS, " r0 %08x r1 %08x r2 %08x r3 %08x\n", 70 static_cast<uint32_t>(r.ARM_r0), static_cast<uint32_t>(r.ARM_r1), 71 static_cast<uint32_t>(r.ARM_r2), static_cast<uint32_t>(r.ARM_r3)); 72 _LOG(log, logtype::REGISTERS, " r4 %08x r5 %08x r6 %08x r7 %08x\n", 73 static_cast<uint32_t>(r.ARM_r4), static_cast<uint32_t>(r.ARM_r5), 74 static_cast<uint32_t>(r.ARM_r6), static_cast<uint32_t>(r.ARM_r7)); 75 _LOG(log, logtype::REGISTERS, " r8 %08x r9 %08x sl %08x fp %08x\n", 76 static_cast<uint32_t>(r.ARM_r8), static_cast<uint32_t>(r.ARM_r9), 77 static_cast<uint32_t>(r.ARM_r10), static_cast<uint32_t>(r.ARM_fp)); 78 _LOG(log, logtype::REGISTERS, " ip %08x sp %08x lr %08x pc %08x cpsr %08x\n", 79 static_cast<uint32_t>(r.ARM_ip), static_cast<uint32_t>(r.ARM_sp), 80 static_cast<uint32_t>(r.ARM_lr), static_cast<uint32_t>(r.ARM_pc), 81 static_cast<uint32_t>(r.ARM_cpsr)); 82 83 user_vfp vfp_regs; 84 if (ptrace(PTRACE_GETVFPREGS, tid, 0, &vfp_regs)) { 85 _LOG(log, logtype::FP_REGISTERS, "cannot get FP registers: %s\n", strerror(errno)); 86 return; 87 } 88 89 for (size_t i = 0; i < 32; i += 2) { 90 _LOG(log, logtype::FP_REGISTERS, " d%-2d %016llx d%-2d %016llx\n", 91 i, vfp_regs.fpregs[i], i+1, vfp_regs.fpregs[i+1]); 92 } 93 _LOG(log, logtype::FP_REGISTERS, " scr %08lx\n", vfp_regs.fpscr); 94 } 95
