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
dump_memory_and_code(log_t * log,Backtrace * backtrace)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
dump_registers(log_t * log,pid_t tid)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