1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
/*
*
* Copyright 2014, The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <elf.h>
#include <errno.h>
#include <inttypes.h>
#include <string.h>
#include <sys/types.h>
#include <sys/ptrace.h>
#include <sys/user.h>
#include <sys/uio.h>
#include "../utility.h"
#include "../machine.h"
void dump_memory_and_code(log_t* log, pid_t tid) {
struct user_pt_regs regs;
struct iovec io;
io.iov_base = ®s;
io.iov_len = sizeof(regs);
if (ptrace(PTRACE_GETREGSET, tid, (void*)NT_PRSTATUS, &io) == -1) {
_LOG(log, logtype::ERROR, "%s: ptrace failed to get registers: %s\n",
__func__, strerror(errno));
return;
}
for (int reg = 0; reg < 31; reg++) {
uintptr_t addr = regs.regs[reg];
/*
* Don't bother if it looks like a small int or ~= null, or if
* it's in the kernel area.
*/
if (addr < 4096 || addr >= (1UL<<63)) {
continue;
}
_LOG(log, logtype::MEMORY, "\nmemory near x%d:\n", reg);
dump_memory(log, tid, addr);
}
_LOG(log, logtype::MEMORY, "\ncode around pc:\n");
dump_memory(log, tid, (uintptr_t)regs.pc);
if (regs.pc != regs.sp) {
_LOG(log, logtype::MEMORY, "\ncode around sp:\n");
dump_memory(log, tid, (uintptr_t)regs.sp);
}
}
void dump_registers(log_t* log, pid_t tid) {
struct user_pt_regs r;
struct iovec io;
io.iov_base = &r;
io.iov_len = sizeof(r);
if (ptrace(PTRACE_GETREGSET, tid, (void*) NT_PRSTATUS, (void*) &io) == -1) {
_LOG(log, logtype::ERROR, "ptrace error: %s\n", strerror(errno));
return;
}
for (int i = 0; i < 28; i += 4) {
_LOG(log, logtype::REGISTERS,
" x%-2d %016llx x%-2d %016llx x%-2d %016llx x%-2d %016llx\n",
i, r.regs[i],
i+1, r.regs[i+1],
i+2, r.regs[i+2],
i+3, r.regs[i+3]);
}
_LOG(log, logtype::REGISTERS, " x28 %016llx x29 %016llx x30 %016llx\n",
r.regs[28], r.regs[29], r.regs[30]);
_LOG(log, logtype::REGISTERS, " sp %016llx pc %016llx pstate %016llx\n",
r.sp, r.pc, r.pstate);
struct user_fpsimd_state f;
io.iov_base = &f;
io.iov_len = sizeof(f);
if (ptrace(PTRACE_GETREGSET, tid, (void*) NT_PRFPREG, (void*) &io) == -1) {
_LOG(log, logtype::ERROR, "ptrace error: %s\n", strerror(errno));
return;
}
for (int i = 0; i < 32; i += 2) {
_LOG(log, logtype::FP_REGISTERS,
" v%-2d %016" PRIx64 "%016" PRIx64 " v%-2d %016" PRIx64 "%016" PRIx64 "\n",
i,
static_cast<uint64_t>(f.vregs[i] >> 64),
static_cast<uint64_t>(f.vregs[i]),
i+1,
static_cast<uint64_t>(f.vregs[i+1] >> 64),
static_cast<uint64_t>(f.vregs[i+1]));
}
_LOG(log, logtype::FP_REGISTERS, " fpsr %08x fpcr %08x\n", f.fpsr, f.fpcr);
}
|
