| Karl Meakin | 88851f9 | 2024-05-10 13:59:08 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2024 The Hafnium Authors. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style |
| 5 | * license that can be found in the LICENSE file or at |
| 6 | * https://opensource.org/licenses/BSD-3-Clause. |
| 7 | */ |
| 8 | |
| 9 | #include "gtest/gtest.h" |
| 10 | |
| 11 | extern "C" { |
| 12 | #include "hf/bits.h" |
| 13 | } |
| 14 | |
| 15 | TEST(bits, is_bit_set) |
| 16 | { |
| 17 | ASSERT_EQ(IS_BIT_SET(UINT64_C(1) << 63, 63), true); |
| 18 | ASSERT_EQ(IS_BIT_SET(0, 63), false); |
| 19 | } |
| 20 | |
| 21 | TEST(bits, is_bit_unset) |
| 22 | { |
| 23 | ASSERT_EQ(IS_BIT_UNSET(UINT64_C(1) << 63, 63), false); |
| 24 | ASSERT_EQ(IS_BIT_UNSET(0, 63), true); |
| 25 | } |
| 26 | |
| 27 | TEST(bits, get_bits_mask) |
| 28 | { |
| 29 | ASSERT_EQ(GET_BITS_MASK(0, 0), 0b0001); |
| 30 | ASSERT_EQ(GET_BITS_MASK(1, 0), 0b0011); |
| 31 | ASSERT_EQ(GET_BITS_MASK(2, 0), 0b0111); |
| 32 | ASSERT_EQ(GET_BITS_MASK(7, 0), 0b1111'1111); |
| 33 | ASSERT_EQ(GET_BITS_MASK(7, 1), 0b1111'1110); |
| 34 | |
| 35 | ASSERT_EQ(GET_BITS_MASK(63, 0), UINT64_MAX); |
| 36 | ASSERT_EQ(GET_BITS_MASK(63, 1), UINT64_MAX - 1); |
| 37 | } |
| 38 | |
| 39 | TEST(bits, get_bits) |
| 40 | { |
| 41 | ASSERT_EQ(GET_BITS(0xAF, 3, 0), 0x0F); |
| 42 | ASSERT_EQ(GET_BITS(0xAF, 7, 4), 0xA0); |
| 43 | ASSERT_EQ(GET_BITS(0x10, 7, 4), 0x10); |
| 44 | ASSERT_EQ(GET_BITS(0x0F, 7, 4), 0x00); |
| 45 | } |
| 46 | |
| 47 | TEST(bits, any_bits_set) |
| 48 | { |
| 49 | ASSERT_EQ(ANY_BITS_SET(0x01, 3, 0), true); |
| 50 | ASSERT_EQ(ANY_BITS_SET(0x00, 3, 0), false); |
| 51 | ASSERT_EQ(ANY_BITS_SET(0x10, 7, 4), true); |
| 52 | ASSERT_EQ(ANY_BITS_SET(0x0F, 7, 4), false); |
| 53 | } |
| 54 | |
| 55 | TEST(bits, all_bits_set) |
| 56 | { |
| 57 | ASSERT_EQ(ALL_BITS_SET(0b1111, 3, 0), true); |
| 58 | ASSERT_EQ(ALL_BITS_SET(0b0111, 3, 0), false); |
| 59 | ASSERT_EQ(ALL_BITS_SET(0xF0, 7, 4), true); |
| 60 | ASSERT_EQ(ALL_BITS_SET(0xA0, 7, 4), false); |
| 61 | } |
| 62 | |
| 63 | TEST(bits, any_bits_unset) |
| 64 | { |
| 65 | ASSERT_EQ(ANY_BITS_UNSET(0x00, 3, 0), true); |
| 66 | ASSERT_EQ(ANY_BITS_UNSET(0x01, 3, 0), true); |
| 67 | ASSERT_EQ(ANY_BITS_UNSET(0x0F, 3, 0), false); |
| 68 | ASSERT_EQ(ANY_BITS_UNSET(0xF0, 7, 4), false); |
| 69 | ASSERT_EQ(ANY_BITS_UNSET(0xA0, 7, 4), true); |
| 70 | } |
| 71 | |
| 72 | TEST(bits, all_bits_unset) |
| 73 | { |
| 74 | ASSERT_EQ(ALL_BITS_UNSET(0x01, 3, 0), false); |
| 75 | ASSERT_EQ(ALL_BITS_UNSET(0x00, 3, 0), true); |
| 76 | ASSERT_EQ(ALL_BITS_UNSET(0x10, 7, 4), false); |
| 77 | ASSERT_EQ(ALL_BITS_UNSET(0x0F, 7, 4), true); |
| 78 | } |