git.ozlabs.org Git - petitboot/blob - lib/ccan/endian/test/run.c

   1 #include <ccan/endian/endian.h>
   2 #include <stdlib.h>
   3 #include <stddef.h>
   4 #include <ccan/tap/tap.h>
   5
   6 int main(int argc, char *argv[])
   7 {
   8         union {
   9                 uint64_t u64;
  10                 unsigned char u64_bytes[8];
  11         } u64;
  12         union {
  13                 uint32_t u32;
  14                 unsigned char u32_bytes[4];
  15         } u32;
  16         union {
  17                 uint16_t u16;
  18                 unsigned char u16_bytes[2];
  19         } u16;
  20
  21         (void)argc;
  22         (void)argv;
  23
  24         plan_tests(48);
  25
  26         /* Straight swap tests. */
  27         u64.u64_bytes[0] = 0x00;
  28         u64.u64_bytes[1] = 0x11;
  29         u64.u64_bytes[2] = 0x22;
  30         u64.u64_bytes[3] = 0x33;
  31         u64.u64_bytes[4] = 0x44;
  32         u64.u64_bytes[5] = 0x55;
  33         u64.u64_bytes[6] = 0x66;
  34         u64.u64_bytes[7] = 0x77;
  35         u64.u64 = bswap_64(u64.u64);
  36         ok1(u64.u64_bytes[7] == 0x00);
  37         ok1(u64.u64_bytes[6] == 0x11);
  38         ok1(u64.u64_bytes[5] == 0x22);
  39         ok1(u64.u64_bytes[4] == 0x33);
  40         ok1(u64.u64_bytes[3] == 0x44);
  41         ok1(u64.u64_bytes[2] == 0x55);
  42         ok1(u64.u64_bytes[1] == 0x66);
  43         ok1(u64.u64_bytes[0] == 0x77);
  44
  45         u32.u32_bytes[0] = 0x00;
  46         u32.u32_bytes[1] = 0x11;
  47         u32.u32_bytes[2] = 0x22;
  48         u32.u32_bytes[3] = 0x33;
  49         u32.u32 = bswap_32(u32.u32);
  50         ok1(u32.u32_bytes[3] == 0x00);
  51         ok1(u32.u32_bytes[2] == 0x11);
  52         ok1(u32.u32_bytes[1] == 0x22);
  53         ok1(u32.u32_bytes[0] == 0x33);
  54
  55         u16.u16_bytes[0] = 0x00;
  56         u16.u16_bytes[1] = 0x11;
  57         u16.u16 = bswap_16(u16.u16);
  58         ok1(u16.u16_bytes[1] == 0x00);
  59         ok1(u16.u16_bytes[0] == 0x11);
  60
  61         /* Endian tests. */
  62         u64.u64 = cpu_to_le64(0x0011223344556677ULL);
  63         ok1(u64.u64_bytes[0] == 0x77);
  64         ok1(u64.u64_bytes[1] == 0x66);
  65         ok1(u64.u64_bytes[2] == 0x55);
  66         ok1(u64.u64_bytes[3] == 0x44);
  67         ok1(u64.u64_bytes[4] == 0x33);
  68         ok1(u64.u64_bytes[5] == 0x22);
  69         ok1(u64.u64_bytes[6] == 0x11);
  70         ok1(u64.u64_bytes[7] == 0x00);
  71         ok1(le64_to_cpu(u64.u64) == 0x0011223344556677ULL);
  72
  73         u64.u64 = cpu_to_be64(0x0011223344556677ULL);
  74         ok1(u64.u64_bytes[7] == 0x77);
  75         ok1(u64.u64_bytes[6] == 0x66);
  76         ok1(u64.u64_bytes[5] == 0x55);
  77         ok1(u64.u64_bytes[4] == 0x44);
  78         ok1(u64.u64_bytes[3] == 0x33);
  79         ok1(u64.u64_bytes[2] == 0x22);
  80         ok1(u64.u64_bytes[1] == 0x11);
  81         ok1(u64.u64_bytes[0] == 0x00);
  82         ok1(be64_to_cpu(u64.u64) == 0x0011223344556677ULL);
  83
  84         u32.u32 = cpu_to_le32(0x00112233);
  85         ok1(u32.u32_bytes[0] == 0x33);
  86         ok1(u32.u32_bytes[1] == 0x22);
  87         ok1(u32.u32_bytes[2] == 0x11);
  88         ok1(u32.u32_bytes[3] == 0x00);
  89         ok1(le32_to_cpu(u32.u32) == 0x00112233);
  90
  91         u32.u32 = cpu_to_be32(0x00112233);
  92         ok1(u32.u32_bytes[3] == 0x33);
  93         ok1(u32.u32_bytes[2] == 0x22);
  94         ok1(u32.u32_bytes[1] == 0x11);
  95         ok1(u32.u32_bytes[0] == 0x00);
  96         ok1(be32_to_cpu(u32.u32) == 0x00112233);
  97
  98         u16.u16 = cpu_to_le16(0x0011);
  99         ok1(u16.u16_bytes[0] == 0x11);
 100         ok1(u16.u16_bytes[1] == 0x00);
 101         ok1(le16_to_cpu(u16.u16) == 0x0011);
 102
 103         u16.u16 = cpu_to_be16(0x0011);
 104         ok1(u16.u16_bytes[1] == 0x11);
 105         ok1(u16.u16_bytes[0] == 0x00);
 106         ok1(be16_to_cpu(u16.u16) == 0x0011);
 107
 108         exit(exit_status());
 109 }