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 <stdint.h>
20 #include <string.h>
21 #include <sys/ptrace.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 pt_regs regs;
30 if (ptrace(PTRACE_GETREGS, backtrace->Tid(), 0, ®s)) {
31 _LOG(log, logtype::ERROR, "cannot get registers: %s\n", strerror(errno));
32 return;
33 }
34
35 static const char reg_names[] = "r0r1r2r3r4r5r6r7r8r9slfpipsp";
36
37 for (int reg = 0; reg < 14; reg++) {
38 dump_memory(log, backtrace, regs.uregs[reg], "memory near %.2s:", ®_names[reg * 2]);
39 }
40
41 dump_memory(log, backtrace, static_cast<uintptr_t>(regs.ARM_pc), "code around pc:");
42
43 if (regs.ARM_pc != regs.ARM_lr) {
44 dump_memory(log, backtrace, static_cast<uintptr_t>(regs.ARM_lr), "code around lr:");
45 }
46 }
47
dump_registers(log_t * log,pid_t tid)48 void dump_registers(log_t* log, pid_t tid) {
49 pt_regs r;
50 if (ptrace(PTRACE_GETREGS, tid, 0, &r)) {
51 _LOG(log, logtype::ERROR, "cannot get registers: %s\n", strerror(errno));
52 return;
53 }
54
55 _LOG(log, logtype::REGISTERS, " r0 %08x r1 %08x r2 %08x r3 %08x\n",
56 static_cast<uint32_t>(r.ARM_r0), static_cast<uint32_t>(r.ARM_r1),
57 static_cast<uint32_t>(r.ARM_r2), static_cast<uint32_t>(r.ARM_r3));
58 _LOG(log, logtype::REGISTERS, " r4 %08x r5 %08x r6 %08x r7 %08x\n",
59 static_cast<uint32_t>(r.ARM_r4), static_cast<uint32_t>(r.ARM_r5),
60 static_cast<uint32_t>(r.ARM_r6), static_cast<uint32_t>(r.ARM_r7));
61 _LOG(log, logtype::REGISTERS, " r8 %08x r9 %08x sl %08x fp %08x\n",
62 static_cast<uint32_t>(r.ARM_r8), static_cast<uint32_t>(r.ARM_r9),
63 static_cast<uint32_t>(r.ARM_r10), static_cast<uint32_t>(r.ARM_fp));
64 _LOG(log, logtype::REGISTERS, " ip %08x sp %08x lr %08x pc %08x cpsr %08x\n",
65 static_cast<uint32_t>(r.ARM_ip), static_cast<uint32_t>(r.ARM_sp),
66 static_cast<uint32_t>(r.ARM_lr), static_cast<uint32_t>(r.ARM_pc),
67 static_cast<uint32_t>(r.ARM_cpsr));
68
69 user_vfp vfp_regs;
70 if (ptrace(PTRACE_GETVFPREGS, tid, 0, &vfp_regs)) {
71 _LOG(log, logtype::ERROR, "cannot get FP registers: %s\n", strerror(errno));
72 return;
73 }
74
75 for (size_t i = 0; i < 32; i += 2) {
76 _LOG(log, logtype::FP_REGISTERS, " d%-2d %016llx d%-2d %016llx\n",
77 i, vfp_regs.fpregs[i], i+1, vfp_regs.fpregs[i+1]);
78 }
79 _LOG(log, logtype::FP_REGISTERS, " scr %08lx\n", vfp_regs.fpscr);
80 }
81