Jakub Czapiga | 7a18721 | 2021-02-15 09:54:03 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 2 | |
| 3 | /* Include malloc() and memalign() source code and alter its name to indicate the functions |
| 4 | source origin. */ |
Tim Wawrzynczak | c556dff | 2021-03-30 11:49:14 -0600 | [diff] [blame] | 5 | #define calloc cb_calloc |
Jakub Czapiga | 7a18721 | 2021-02-15 09:54:03 +0100 | [diff] [blame] | 6 | #define malloc cb_malloc |
| 7 | #define free cb_free |
| 8 | #define memalign cb_memalign |
| 9 | #undef __noreturn |
| 10 | #define __noreturn |
| 11 | |
| 12 | #include "../lib/malloc.c" |
| 13 | |
Tim Wawrzynczak | c556dff | 2021-03-30 11:49:14 -0600 | [diff] [blame] | 14 | #undef calloc |
Jakub Czapiga | 7a18721 | 2021-02-15 09:54:03 +0100 | [diff] [blame] | 15 | #undef malloc |
| 16 | #undef free |
| 17 | #undef memalign |
| 18 | #undef __noreturn |
| 19 | #define __noreturn __attribute__((noreturn)) |
| 20 | |
| 21 | #include <stdlib.h> |
| 22 | #include <tests/test.h> |
| 23 | #include <commonlib/helpers.h> |
| 24 | #include <types.h> |
| 25 | #include <symbols.h> |
| 26 | |
| 27 | /* 4 MiB */ |
| 28 | #define TEST_HEAP_SZ 0x400000 |
| 29 | |
| 30 | /* Heap region setup */ |
| 31 | __weak extern uint8_t _test_heap[]; |
| 32 | __weak extern uint8_t _etest_heap[]; |
| 33 | TEST_REGION(test_heap, TEST_HEAP_SZ); |
| 34 | TEST_SYMBOL(_heap, _test_heap); |
| 35 | TEST_SYMBOL(_eheap, _etest_heap); |
| 36 | |
| 37 | void die(const char *msg, ...) |
| 38 | { |
| 39 | function_called(); |
| 40 | } |
| 41 | |
| 42 | static int setup_test(void **state) |
| 43 | { |
| 44 | free_mem_ptr = &_heap; |
| 45 | free_mem_end_ptr = &_eheap; |
| 46 | free_last_alloc_ptr = &_heap; |
| 47 | |
| 48 | return 0; |
| 49 | } |
| 50 | |
Tim Wawrzynczak | c556dff | 2021-03-30 11:49:14 -0600 | [diff] [blame] | 51 | static int setup_calloc_test(void **state) |
| 52 | { |
Jakub Czapiga | 13145e5 | 2021-04-06 18:27:30 +0200 | [diff] [blame] | 53 | memset(_test_heap, 0xFF, TEST_HEAP_SZ); |
Tim Wawrzynczak | c556dff | 2021-03-30 11:49:14 -0600 | [diff] [blame] | 54 | return setup_test(state); |
| 55 | } |
| 56 | |
Jakub Czapiga | 7a18721 | 2021-02-15 09:54:03 +0100 | [diff] [blame] | 57 | static void test_malloc_out_of_memory(void **state) |
| 58 | { |
| 59 | /* Expect die() call if out of memory */ |
| 60 | expect_function_call(die); |
| 61 | cb_malloc(TEST_HEAP_SZ); |
| 62 | } |
| 63 | |
| 64 | static void test_malloc_zero(void **state) |
| 65 | { |
| 66 | void *ptr1 = cb_malloc(0); |
| 67 | void *ptr2 = cb_malloc(0); |
| 68 | void *ptr3 = cb_malloc(0); |
| 69 | |
| 70 | /* Expect malloc(0) to return the same pointer as there are no bytes |
| 71 | to be added to the heap */ |
| 72 | assert_ptr_equal(ptr1, ptr2); |
| 73 | assert_ptr_equal(ptr2, ptr3); |
| 74 | } |
| 75 | |
| 76 | static void test_malloc_multiple_small_allocations(void **state) |
| 77 | { |
| 78 | /* Make multiple small allocations (smaller than alignment) |
| 79 | Expect no call to die(), as this allocations should be small |
| 80 | enough to fit in provided memory */ |
| 81 | void *prev; |
| 82 | void *curr = cb_malloc(3); |
| 83 | assert_non_null(curr); |
| 84 | for (int i = 0; i < 1000; ++i) { |
| 85 | prev = curr; |
| 86 | curr = cb_malloc(3); |
| 87 | assert_non_null(curr); |
| 88 | assert_true(prev < curr); |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | static void test_memalign_different_alignments(void **state) |
| 93 | { |
| 94 | void *ptr1 = cb_memalign(4, 30); |
| 95 | void *ptr2 = cb_memalign(16, 22); |
| 96 | void *ptr3 = cb_memalign(8, 64); |
| 97 | |
| 98 | assert_true((uintptr_t)ptr1 % 4 == 0); |
| 99 | assert_true((uintptr_t)ptr2 % 16 == 0); |
| 100 | assert_true((uintptr_t)ptr3 % 8 == 0); |
| 101 | } |
| 102 | |
| 103 | static void test_memalign_out_of_memory(void **state) |
| 104 | { |
| 105 | expect_function_call(die); |
| 106 | cb_memalign(16, TEST_HEAP_SZ); |
| 107 | } |
| 108 | |
| 109 | static void test_memalign_zero(void **state) |
| 110 | { |
| 111 | void *ptr1 = cb_memalign(16, 0); |
| 112 | void *ptr2 = cb_memalign(7, 0); |
| 113 | void *ptr3 = cb_memalign(11, 0); |
| 114 | |
| 115 | /* Expect memalign(x, 0) to return the same pointer as there are no bytes |
| 116 | to be added to the heap */ |
| 117 | assert_ptr_equal(ptr1, ptr2); |
| 118 | assert_ptr_equal(ptr2, ptr3); |
| 119 | } |
| 120 | |
| 121 | static void test_memalign_multiple_small_allocations(void **state) |
| 122 | { |
| 123 | /* Make multiple small allocations (smaller than alignment) |
| 124 | Expect no call to die(), as this allocations should be small |
| 125 | enough to fit in provided memory. There should also be no error |
| 126 | when allocating memory with different align values. */ |
| 127 | void *prev; |
| 128 | void *curr = cb_memalign(3, 3); |
| 129 | assert_non_null(curr); |
| 130 | for (int i = 0; i < 1000; ++i) { |
| 131 | /* Expect new pointer larger than previously allocated and aligned to provided |
| 132 | value. Alignment has to be power of 2 to be applied correctly. */ |
| 133 | prev = curr; |
| 134 | curr = cb_memalign(2u << (i % 6), 3); |
| 135 | assert_non_null(curr); |
| 136 | assert_true(prev < curr); |
| 137 | assert_true((uintptr_t)curr % (2u << (i % 6)) == 0); |
| 138 | } |
| 139 | } |
| 140 | |
Tim Wawrzynczak | c556dff | 2021-03-30 11:49:14 -0600 | [diff] [blame] | 141 | static void test_calloc_memory_is_zeroed(void **state) |
| 142 | { |
| 143 | const size_t nitems = 42; |
| 144 | const size_t size = sizeof(uint32_t); |
| 145 | void *ptr = cb_calloc(nitems, size); |
| 146 | assert_non_null(ptr); |
| 147 | |
| 148 | for (size_t i = 0; i < nitems; i++) { |
| 149 | const uint32_t *p = (const uint32_t *)ptr + i; |
| 150 | assert_int_equal(*p, 0); |
| 151 | } |
| 152 | } |
| 153 | |
Jakub Czapiga | 7a18721 | 2021-02-15 09:54:03 +0100 | [diff] [blame] | 154 | int main(void) |
| 155 | { |
| 156 | const struct CMUnitTest tests[] = { |
| 157 | cmocka_unit_test_setup(test_malloc_out_of_memory, setup_test), |
| 158 | cmocka_unit_test_setup(test_malloc_zero, setup_test), |
| 159 | cmocka_unit_test_setup(test_malloc_multiple_small_allocations, setup_test), |
| 160 | cmocka_unit_test_setup(test_memalign_different_alignments, setup_test), |
| 161 | cmocka_unit_test_setup(test_memalign_out_of_memory, setup_test), |
| 162 | cmocka_unit_test_setup(test_memalign_zero, setup_test), |
| 163 | cmocka_unit_test_setup(test_memalign_multiple_small_allocations, setup_test), |
Tim Wawrzynczak | c556dff | 2021-03-30 11:49:14 -0600 | [diff] [blame] | 164 | cmocka_unit_test_setup(test_calloc_memory_is_zeroed, setup_calloc_test), |
Jakub Czapiga | 7a18721 | 2021-02-15 09:54:03 +0100 | [diff] [blame] | 165 | }; |
| 166 | |
Jakub Czapiga | 7c6081e | 2021-08-25 16:27:35 +0200 | [diff] [blame] | 167 | return cb_run_group_tests(tests, NULL, NULL); |
Jakub Czapiga | 7a18721 | 2021-02-15 09:54:03 +0100 | [diff] [blame] | 168 | } |