app/test/test_common.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
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   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
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  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
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  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <stdio.h>
  35 #include <string.h>
  36 #include <rte_common.h>
  37 #include <rte_hexdump.h>
  38
  39 #include "test.h"
  40
  41 #define MAX_NUM 1 << 20
  42
  43 #define FAIL(x)\
  44         {printf(x "() test failed!\n");\
  45         return -1;}
  46
  47 /* this is really a sanity check */
  48 static int
  49 test_macros(int __rte_unused unused_parm)
  50 {
  51 #define SMALLER 0x1000U
  52 #define BIGGER 0x2000U
  53 #define PTR_DIFF BIGGER - SMALLER
  54 #define FAIL_MACRO(x)\
  55         {printf(#x "() test failed!\n");\
  56         return -1;}
  57
  58         uintptr_t unused = 0;
  59
  60         RTE_SET_USED(unused);
  61
  62         if ((uintptr_t)RTE_PTR_ADD(SMALLER, PTR_DIFF) != BIGGER)
  63                 FAIL_MACRO(RTE_PTR_ADD);
  64         if ((uintptr_t)RTE_PTR_SUB(BIGGER, PTR_DIFF) != SMALLER)
  65                 FAIL_MACRO(RTE_PTR_SUB);
  66         if (RTE_PTR_DIFF(BIGGER, SMALLER) != PTR_DIFF)
  67                 FAIL_MACRO(RTE_PTR_DIFF);
  68         if (RTE_MAX(SMALLER, BIGGER) != BIGGER)
  69                 FAIL_MACRO(RTE_MAX);
  70         if (RTE_MIN(SMALLER, BIGGER) != SMALLER)
  71                 FAIL_MACRO(RTE_MIN);
  72
  73         if (strncmp(RTE_STR(test), "test", sizeof("test")))
  74                 FAIL_MACRO(RTE_STR);
  75
  76         return 0;
  77 }
  78
  79 static int
  80 test_misc(void)
  81 {
  82         char memdump[] = "memdump_test";
  83         if (rte_bsf32(129))
  84                 FAIL("rte_bsf32");
  85
  86         rte_memdump(stdout, "test", memdump, sizeof(memdump));
  87         rte_hexdump(stdout, "test", memdump, sizeof(memdump));
  88
  89         rte_pause();
  90
  91         return 0;
  92 }
  93
  94 static int
  95 test_align(void)
  96 {
  97 #define FAIL_ALIGN(x, i, p)\
  98         {printf(x "() test failed: %u %u\n", i, p);\
  99         return -1;}
 100 #define ERROR_FLOOR(res, i, pow) \
 101                 (res % pow) ||                                          /* check if not aligned */ \
 102                 ((res / pow) != (i / pow))              /* check if correct alignment */
 103 #define ERROR_CEIL(res, i, pow) \
 104                 (res % pow) ||                                          /* check if not aligned */ \
 105                         ((i % pow) == 0 ?                               /* check if ceiling is invoked */ \
 106                         val / pow != i / pow :                  /* if aligned */ \
 107                         val / pow != (i / pow) + 1)             /* if not aligned, hence +1 */
 108
 109         uint32_t i, p, val;
 110
 111         for (i = 1, p = 1; i <= MAX_NUM; i ++) {
 112                 if (rte_align32pow2(i) != p)
 113                         FAIL_ALIGN("rte_align32pow2", i, p);
 114                 if (i == p)
 115                         p <<= 1;
 116         }
 117
 118         for (p = 2; p <= MAX_NUM; p <<= 1) {
 119
 120                 if (!rte_is_power_of_2(p))
 121                         FAIL("rte_is_power_of_2");
 122
 123                 for (i = 1; i <= MAX_NUM; i++) {
 124                         /* align floor */
 125                         if (RTE_ALIGN_FLOOR((uintptr_t)i, p) % p)
 126                                 FAIL_ALIGN("RTE_ALIGN_FLOOR", i, p);
 127
 128                         val = RTE_PTR_ALIGN_FLOOR((uintptr_t) i, p);
 129                         if (ERROR_FLOOR(val, i, p))
 130                                 FAIL_ALIGN("RTE_PTR_ALIGN_FLOOR", i, p);
 131
 132                         val = RTE_ALIGN_FLOOR(i, p);
 133                         if (ERROR_FLOOR(val, i, p))
 134                                 FAIL_ALIGN("RTE_ALIGN_FLOOR", i, p);
 135
 136                         /* align ceiling */
 137                         val = RTE_PTR_ALIGN((uintptr_t) i, p);
 138                         if (ERROR_CEIL(val, i, p))
 139                                 FAIL_ALIGN("RTE_PTR_ALIGN", i, p);
 140
 141                         val = RTE_ALIGN(i, p);
 142                         if (ERROR_CEIL(val, i, p))
 143                                 FAIL_ALIGN("RTE_ALIGN", i, p);
 144
 145                         val = RTE_ALIGN_CEIL(i, p);
 146                         if (ERROR_CEIL(val, i, p))
 147                                 FAIL_ALIGN("RTE_ALIGN_CEIL", i, p);
 148
 149                         val = RTE_PTR_ALIGN_CEIL((uintptr_t)i, p);
 150                         if (ERROR_CEIL(val, i, p))
 151                                 FAIL_ALIGN("RTE_PTR_ALIGN_CEIL", i, p);
 152
 153                         /* by this point we know that val is aligned to p */
 154                         if (!rte_is_aligned((void*)(uintptr_t) val, p))
 155                                 FAIL("rte_is_aligned");
 156                 }
 157         }
 158         return 0;
 159 }
 160
 161 static int
 162 test_common(void)
 163 {
 164         int ret = 0;
 165         ret |= test_align();
 166         ret |= test_macros(0);
 167         ret |= test_misc();
 168
 169         return ret;
 170 }
 171
 172 static struct test_command common_cmd = {
 173         .command = "common_autotest",
 174         .callback = test_common,
 175 };
 176 REGISTER_TEST_COMMAND(common_cmd);