1 /*
2 ** Copyright 2013, 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 <sys/ptrace.h>
20 #include <string.h>
21 #include <sys/user.h>
22
23 #include <backtrace/Backtrace.h>
24
25 #include "machine.h"
26 #include "utility.h"
27
dump_memory_and_code(log_t * log,Backtrace * backtrace)28 void dump_memory_and_code(log_t* log, Backtrace* backtrace) {
29 struct user_regs_struct r;
30 if (ptrace(PTRACE_GETREGS, backtrace->Tid(), 0, &r) == -1) {
31 _LOG(log, logtype::ERROR, "cannot get registers: %s\n", strerror(errno));
32 return;
33 }
34
35 dump_memory(log, backtrace, static_cast<uintptr_t>(r.rax), "memory near rax:");
36 dump_memory(log, backtrace, static_cast<uintptr_t>(r.rbx), "memory near rbx:");
37 dump_memory(log, backtrace, static_cast<uintptr_t>(r.rcx), "memory near rcx:");
38 dump_memory(log, backtrace, static_cast<uintptr_t>(r.rdx), "memory near rdx:");
39 dump_memory(log, backtrace, static_cast<uintptr_t>(r.rsi), "memory near rsi:");
40 dump_memory(log, backtrace, static_cast<uintptr_t>(r.rdi), "memory near rdi:");
41
42 dump_memory(log, backtrace, static_cast<uintptr_t>(r.rip), "code around rip:");
43 }
44
dump_registers(log_t * log,pid_t tid)45 void dump_registers(log_t* log, pid_t tid) {
46 struct user_regs_struct r;
47 if (ptrace(PTRACE_GETREGS, tid, 0, &r) == -1) {
48 _LOG(log, logtype::ERROR, "cannot get registers: %s\n", strerror(errno));
49 return;
50 }
51
52 _LOG(log, logtype::REGISTERS, " rax %016lx rbx %016lx rcx %016lx rdx %016lx\n",
53 r.rax, r.rbx, r.rcx, r.rdx);
54 _LOG(log, logtype::REGISTERS, " rsi %016lx rdi %016lx\n",
55 r.rsi, r.rdi);
56 _LOG(log, logtype::REGISTERS, " r8 %016lx r9 %016lx r10 %016lx r11 %016lx\n",
57 r.r8, r.r9, r.r10, r.r11);
58 _LOG(log, logtype::REGISTERS, " r12 %016lx r13 %016lx r14 %016lx r15 %016lx\n",
59 r.r12, r.r13, r.r14, r.r15);
60 _LOG(log, logtype::REGISTERS, " cs %016lx ss %016lx\n",
61 r.cs, r.ss);
62 _LOG(log, logtype::REGISTERS, " rip %016lx rbp %016lx rsp %016lx eflags %016lx\n",
63 r.rip, r.rbp, r.rsp, r.eflags);
64 }
65