| 1 | // leb_unittest.cc -- test read_signed_LEB_128 and read_unsigned_LEB_128 |
| 2 | |
| 3 | // Copyright (C) 2012-2020 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 | |
| 31 | namespace gold_testsuite |
| 32 | { |
| 33 | |
| 34 | using namespace gold; |
| 35 | |
| 36 | bool |
| 37 | Leb128_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 | |
| 86 | Register_test leb128_register("LEB128", Leb128_test); |
| 87 | |
| 88 | } // End namespace gold_testsuite. |