1// leb_unittest.cc -- test read_signed_LEB_128 and read_unsigned_LEB_128
2
3// Copyright (C) 2012-2017 Free Software Foundation, Inc.
4// Written by Cary Coutant <ccoutant@google.com>.
5
6// This file is part of gold.
7
8// This program is free software; you can redistribute it and/or modify
9// it under the terms of the GNU General Public License as published by
10// the Free Software Foundation; either version 3 of the License, or
11// (at your option) any later version.
12
13// This program is distributed in the hope that it will be useful,
14// but WITHOUT ANY WARRANTY; without even the implied warranty of
15// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16// GNU General Public License for more details.
17
18// You should have received a copy of the GNU General Public License
19// along with this program; if not, write to the Free Software
20// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21// MA 02110-1301, USA.
22
23#include "gold.h"
24
25#include <sys/types.h>
26
27#include "int_encoding.h"
28
29#include "test.h"
30
31namespace gold_testsuite
32{
33
34using namespace gold;
35
36bool
37Leb128_test(Test_report*)
38{
39  size_t len;
40
41  // Unsigned tests.
42  static unsigned char u1[] = { 0 };		// 0
43  static unsigned char u2[] = { 1 };		// 1
44  static unsigned char u3[] = { 126 };		// 126
45  static unsigned char u4[] = { 127 };		// 127
46  static unsigned char u5[] = { 0x80+0, 1 };	// 128
47  static unsigned char u6[] = { 0x80+1, 1 };	// 129
48  static unsigned char u7[] = { 0x80+57, 100 };	// 12857
49  static unsigned char u8[] = { 0x80, 0x80, 0x80, 0x80,
50				0x80, 0x80, 0x80, 0x80,
51				0x80, 1};	// 1ULL << 63
52
53  // Signed tests.
54  static unsigned char s1[] = { 0 };		// 0
55  static unsigned char s2[] = { 1 };		// 1
56  static unsigned char s3[] = { 0x7e };		// -2
57  static unsigned char s4[] = { 0x80+127, 0 };	// 127
58  static unsigned char s5[] = { 0x80+1, 0x7f };	// -127
59  static unsigned char s6[] = { 0x80+0, 1 };	// 128
60  static unsigned char s7[] = { 0x80+0, 0x7f };	// -128
61  static unsigned char s8[] = { 0x80+1, 1 };	// 129
62  static unsigned char s9[] = { 0xff, 0x7e };	// -129
63
64  CHECK(read_unsigned_LEB_128(u1, &len) == 0 && len == sizeof(u1));
65  CHECK(read_unsigned_LEB_128(u2, &len) == 1 && len == sizeof(u2));
66  CHECK(read_unsigned_LEB_128(u3, &len) == 126 && len == sizeof(u3));
67  CHECK(read_unsigned_LEB_128(u4, &len) == 127 && len == sizeof(u4));
68  CHECK(read_unsigned_LEB_128(u5, &len) == 128 && len == sizeof(u5));
69  CHECK(read_unsigned_LEB_128(u6, &len) == 129 && len == sizeof(u6));
70  CHECK(read_unsigned_LEB_128(u7, &len) == 12857 && len == sizeof(u7));
71  CHECK(read_unsigned_LEB_128(u8, &len) == (1ULL << 63) && len == sizeof(u8));
72
73  CHECK(read_signed_LEB_128(s1, &len) == 0 && len == sizeof(s1));
74  CHECK(read_signed_LEB_128(s2, &len) == 1 && len == sizeof(s2));
75  CHECK(read_signed_LEB_128(s3, &len) == -2 && len == sizeof(s3));
76  CHECK(read_signed_LEB_128(s4, &len) == 127 && len == sizeof(s4));
77  CHECK(read_signed_LEB_128(s5, &len) == -127 && len == sizeof(s5));
78  CHECK(read_signed_LEB_128(s6, &len) == 128 && len == sizeof(s6));
79  CHECK(read_signed_LEB_128(s7, &len) == -128 && len == sizeof(s7));
80  CHECK(read_signed_LEB_128(s8, &len) == 129 && len == sizeof(s8));
81  CHECK(read_signed_LEB_128(s9, &len) == -129 && len == sizeof(s9));
82
83  return true;
84}
85
86Register_test leb128_register("LEB128", Leb128_test);
87
88} // End namespace gold_testsuite.
89