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