test/test/test_common.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2014 Intel Corporation
   3  */
   4
   5 #include <stdio.h>
   6 #include <string.h>
   7 #include <math.h>
   8 #include <rte_common.h>
   9 #include <rte_hexdump.h>
  10 #include <rte_pause.h>
  11
  12 #include "test.h"
  13
  14 #define MAX_NUM 1 << 20
  15
  16 #define FAIL(x)\
  17         {printf(x "() test failed!\n");\
  18         return -1;}
  19
  20 /* this is really a sanity check */
  21 static int
  22 test_macros(int __rte_unused unused_parm)
  23 {
  24 #define SMALLER 0x1000U
  25 #define BIGGER 0x2000U
  26 #define PTR_DIFF BIGGER - SMALLER
  27 #define FAIL_MACRO(x)\
  28         {printf(#x "() test failed!\n");\
  29         return -1;}
  30
  31         uintptr_t unused = 0;
  32
  33         RTE_SET_USED(unused);
  34
  35         if ((uintptr_t)RTE_PTR_ADD(SMALLER, PTR_DIFF) != BIGGER)
  36                 FAIL_MACRO(RTE_PTR_ADD);
  37         if ((uintptr_t)RTE_PTR_SUB(BIGGER, PTR_DIFF) != SMALLER)
  38                 FAIL_MACRO(RTE_PTR_SUB);
  39         if (RTE_PTR_DIFF(BIGGER, SMALLER) != PTR_DIFF)
  40                 FAIL_MACRO(RTE_PTR_DIFF);
  41         if (RTE_MAX(SMALLER, BIGGER) != BIGGER)
  42                 FAIL_MACRO(RTE_MAX);
  43         if (RTE_MIN(SMALLER, BIGGER) != SMALLER)
  44                 FAIL_MACRO(RTE_MIN);
  45
  46         if (strncmp(RTE_STR(test), "test", sizeof("test")))
  47                 FAIL_MACRO(RTE_STR);
  48
  49         return 0;
  50 }
  51
  52 static int
  53 test_misc(void)
  54 {
  55         char memdump[] = "memdump_test";
  56         if (rte_bsf32(129))
  57                 FAIL("rte_bsf32");
  58
  59         rte_memdump(stdout, "test", memdump, sizeof(memdump));
  60         rte_hexdump(stdout, "test", memdump, sizeof(memdump));
  61
  62         rte_pause();
  63
  64         return 0;
  65 }
  66
  67 static int
  68 test_align(void)
  69 {
  70 #define FAIL_ALIGN(x, i, p)\
  71         {printf(x "() test failed: %u %u\n", i, p);\
  72         return -1;}
  73 #define ERROR_FLOOR(res, i, pow) \
  74                 (res % pow) ||                                          /* check if not aligned */ \
  75                 ((res / pow) != (i / pow))              /* check if correct alignment */
  76 #define ERROR_CEIL(res, i, pow) \
  77                 (res % pow) ||                                          /* check if not aligned */ \
  78                         ((i % pow) == 0 ?                               /* check if ceiling is invoked */ \
  79                         val / pow != i / pow :                  /* if aligned */ \
  80                         val / pow != (i / pow) + 1)             /* if not aligned, hence +1 */
  81
  82         uint32_t i, p, val;
  83
  84         for (i = 1, p = 1; i <= MAX_NUM; i ++) {
  85                 if (rte_align32pow2(i) != p)
  86                         FAIL_ALIGN("rte_align32pow2", i, p);
  87                 if (i == p)
  88                         p <<= 1;
  89         }
  90
  91         for (p = 2; p <= MAX_NUM; p <<= 1) {
  92
  93                 if (!rte_is_power_of_2(p))
  94                         FAIL("rte_is_power_of_2");
  95
  96                 for (i = 1; i <= MAX_NUM; i++) {
  97                         /* align floor */
  98                         if (RTE_ALIGN_FLOOR((uintptr_t)i, p) % p)
  99                                 FAIL_ALIGN("RTE_ALIGN_FLOOR", i, p);
 100
 101                         val = RTE_PTR_ALIGN_FLOOR((uintptr_t) i, p);
 102                         if (ERROR_FLOOR(val, i, p))
 103                                 FAIL_ALIGN("RTE_PTR_ALIGN_FLOOR", i, p);
 104
 105                         val = RTE_ALIGN_FLOOR(i, p);
 106                         if (ERROR_FLOOR(val, i, p))
 107                                 FAIL_ALIGN("RTE_ALIGN_FLOOR", i, p);
 108
 109                         /* align ceiling */
 110                         val = RTE_PTR_ALIGN((uintptr_t) i, p);
 111                         if (ERROR_CEIL(val, i, p))
 112                                 FAIL_ALIGN("RTE_PTR_ALIGN", i, p);
 113
 114                         val = RTE_ALIGN(i, p);
 115                         if (ERROR_CEIL(val, i, p))
 116                                 FAIL_ALIGN("RTE_ALIGN", i, p);
 117
 118                         val = RTE_ALIGN_CEIL(i, p);
 119                         if (ERROR_CEIL(val, i, p))
 120                                 FAIL_ALIGN("RTE_ALIGN_CEIL", i, p);
 121
 122                         val = RTE_PTR_ALIGN_CEIL((uintptr_t)i, p);
 123                         if (ERROR_CEIL(val, i, p))
 124                                 FAIL_ALIGN("RTE_PTR_ALIGN_CEIL", i, p);
 125
 126                         /* by this point we know that val is aligned to p */
 127                         if (!rte_is_aligned((void*)(uintptr_t) val, p))
 128                                 FAIL("rte_is_aligned");
 129                 }
 130         }
 131         return 0;
 132 }
 133
 134 static int
 135 test_log2(void)
 136 {
 137         uint32_t i, base, compare;
 138         const uint32_t max = 0x10000;
 139         const uint32_t step = 1;
 140
 141         for (i = 0; i < max; i = i + step) {
 142                 base = (uint32_t)ceilf(log2((uint32_t)i));
 143                 compare = rte_log2_u32(i);
 144                 if (base != compare) {
 145                         printf("Wrong rte_log2_u32(%x) val %x, expected %x\n",
 146                                 i, compare, base);
 147                         return TEST_FAILED;
 148                 }
 149         }
 150         return 0;
 151 }
 152
 153 static int
 154 test_common(void)
 155 {
 156         int ret = 0;
 157         ret |= test_align();
 158         ret |= test_macros(0);
 159         ret |= test_misc();
 160         ret |= test_log2();
 161
 162         return ret;
 163 }
 164
 165 REGISTER_TEST_COMMAND(common_autotest, test_common);