1 /*
2 * Copyright 2006, 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 #define LOG_TAG "DEBUG"
18
19 #include <errno.h>
20 #include <stdint.h>
21 #include <string.h>
22 #include <sys/ptrace.h>
23
24 #include <backtrace/Backtrace.h>
25 #include <log/log.h>
26
27 #include "machine.h"
28 #include "utility.h"
29
dump_memory_and_code(log_t * log,Backtrace * backtrace)30 void dump_memory_and_code(log_t* log, Backtrace* backtrace) {
31 struct pt_regs r;
32 if (ptrace(PTRACE_GETREGS, backtrace->Tid(), 0, &r) == -1) {
33 ALOGE("cannot get registers: %s\n", strerror(errno));
34 return;
35 }
36
37 dump_memory(log, backtrace, static_cast<uintptr_t>(r.eax), "memory near eax:");
38 dump_memory(log, backtrace, static_cast<uintptr_t>(r.ebx), "memory near ebx:");
39 dump_memory(log, backtrace, static_cast<uintptr_t>(r.ecx), "memory near ecx:");
40 dump_memory(log, backtrace, static_cast<uintptr_t>(r.edx), "memory near edx:");
41 dump_memory(log, backtrace, static_cast<uintptr_t>(r.esi), "memory near esi:");
42 dump_memory(log, backtrace, static_cast<uintptr_t>(r.edi), "memory near edi:");
43
44 dump_memory(log, backtrace, static_cast<uintptr_t>(r.eip), "code around eip:");
45 }
46
dump_registers(log_t * log,pid_t tid)47 void dump_registers(log_t* log, pid_t tid) {
48 struct pt_regs r;
49 if (ptrace(PTRACE_GETREGS, tid, 0, &r) == -1) {
50 ALOGE("cannot get registers: %s\n", strerror(errno));
51 return;
52 }
53
54 _LOG(log, logtype::REGISTERS, " eax %08lx ebx %08lx ecx %08lx edx %08lx\n",
55 r.eax, r.ebx, r.ecx, r.edx);
56 _LOG(log, logtype::REGISTERS, " esi %08lx edi %08lx\n",
57 r.esi, r.edi);
58 _LOG(log, logtype::REGISTERS, " xcs %08x xds %08x xes %08x xfs %08x xss %08x\n",
59 r.xcs, r.xds, r.xes, r.xfs, r.xss);
60 _LOG(log, logtype::REGISTERS, " eip %08lx ebp %08lx esp %08lx flags %08lx\n",
61 r.eip, r.ebp, r.esp, r.eflags);
62 }
63