1 /*
2 * Copyright 2011, 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 "helper.h"
18 #include "raw_ostream.h"
19
20 #include <stdlib.h>
21 #include <ctype.h>
22
23 using namespace llvm;
24
dump_hex(unsigned char const * data,size_t size,size_t begin,size_t end)25 void dump_hex(unsigned char const *data,
26 size_t size, size_t begin, size_t end) {
27 if (end <= begin) {
28 // Nothing to print now. Return directly.
29 return;
30 }
31
32 size_t lower = begin & (~0xfUL);
33 size_t upper = (end & (~0xfUL)) ? end : ((end + 16UL) & (~0xfUL));
34
35 for (size_t i = lower; i < upper; i += 16) {
36 out() << format("%08x", i) << ':';
37
38 if (i < begin) {
39 out().changeColor(raw_ostream::MAGENTA);
40 }
41
42 for (size_t j = i, k = i + 16; j < k; ++j) {
43 if (j == begin) {
44 out().resetColor();
45 }
46
47 if (j == end) {
48 out().changeColor(raw_ostream::MAGENTA);
49 }
50
51 if (j < size) {
52 out() << ' ' << format("%02x", (unsigned)data[j]);
53 }
54 }
55
56 out().resetColor();
57 out() << " ";
58
59 for (size_t j = i, k = i + 16; j < k; ++j) {
60 if (data[j] > 0x20 && data[j] < 0x7f) {
61 out() << (char)data[j];
62 } else {
63 out() << '.';
64 }
65 }
66
67 out() << '\n';
68 }
69 }
70